MAGNETIC LEVITATION CENTRIFUGAL PUMP

A magnetic levitation centrifugal pump, comprises: one hollow body provided with at least one inlet connector and with at least one outlet connector for blood; one rotor element, housed inside the hollow body and comprising at least one magnetic portion, where the rotor element can be commanded in rotation about an axis of rotation, without contact, by a stator element associable with the hollow body, the rotor element comprising at least one revolving body, which defines an upper surface supporting a plurality of blades which are adapted to convey blood towards the outlet connector; where the upper surface has a substantially concave shape and where the revolving body comprises at least one through hole which is positioned along the axis of rotation. 1. A magnetic levitation centrifugal pump comprising:at least one hollow body provided with at least one inlet connector and with at least one outlet connector for blood; andat least one rotor element, housed inside said at least one hollow body and comprising at least one magnetic portion, where said at least one rotor element can be commanded in rotation about an axis of rotation, without contact, by a stator element associable with said at least one hollow body, said at least one rotor element comprising at least one revolving body, which defines an upper surface supporting a plurality of blades which are adapted to convey blood towards said at least one outlet connector; whereinsaid upper surface has a substantially concave shape and said at least one revolving body comprises at least one through hole which is positioned along said axis of rotation.2. The magnetic levitation centrifugal pump according to claim 1 , whereinsaid upper surface has a curvilinear extension to define a saddle which is adapted to receive the blood entering said at least one inlet connector.3. The magnetic levitation centrifugal pump according to claim 2 , whereinsaid at least one hole has a first opening facing said upper surface.4. The ...

DRAIN PUMP AND A CLOTHES DRYER HAVING A DRAIN PUMP

A drain pump and a clothes dryer having a drain pump are provided. The drain pump may include a pump motor; an impeller including a hub, an impeller shaft that extends from a center of the hub and is connected to a rotational shaft of the pump motor, and at least one blade that extends from an outer circumferential surface of the impeller shaft; a housing including an impeller hole, through which the impeller may pass, and a space in which the pump motor may be accommodated; and a pump case coupled to a bottom surface of the housing. The pump case may have a suction hole to suction in cleaning water. The suction hole may be defined at a position corresponding to the impeller, and the pump case may include a shaft shield that extends from an edge of the suction hole in a central direction of the suction hole or toward a central portion of the suction hole to cover a lower end of the impeller shaft. 1. A drain pump , comprising:a pump motor; a hub;', 'an impeller shaft that extends from a center of the hub and is connected to a rotational shaft of the pump motor; and', 'at least one blade that extends from an outer circumferential surface of the impeller shaft;, 'an impeller including an impeller hole, through which the impeller passes; and', 'a space in which the pump motor is accommodated; and', 'a pump case coupled to a bottom surface of the housing, wherein the pump case has a suction hole to suction in cleaning water, wherein the suction hole is defined at a position corresponding to the impeller, and wherein the pump case includes a shaft shield that extends from an edge of the suction hole toward a central portion of the suction hole to cover a lower end of the impeller shaft., 'a housing including2. The drain pump according to claim 1 , further comprising:a pump motor seat stepped from a bottom of the housing, such that the pump motor is seated thereon; anda discharge port that extends from a predetermined position which is spaced apart from the pump motor ...

BLADE MEMBER FOR FLUID PUMP

The object is to obtain reasonably a blade member for a pump having superior fluid transporting performance. A blade member for a fluid pump includes a cylindrical portion formed around a rotational axis, a plurality of base portions protruding radially outwardly of the rotational axis from one end portion of the cylindrical portion along the rotational axis and provided along a circumferential direction, a bent portion bent from each of the respective base portion in one direction along the rotational axis, and a hole portion provided in a border portion between root portions of the adjacent base portions. A rising edge portion extending from the hole portion to a leading end of the bent portion and an overhang edge portion extending from the hole portion to a leading end of the base portion are formed by a common cut portion. 1. A blade member for a fluid pump , comprising:a cylindrical portion formed around a rotational axis;a plurality of base portions protruding radially outwardly of the rotational axis from one end portion of the cylindrical portion along the rotational axis and provided along a circumferential direction;a bent portion bent from each of the respective base portion in one direction along the rotational axis; anda hole portion provided in a border portion between root portions of the adjacent base portions;wherein a rising edge portion extending from the hole portion to a leading end of the bent portion and an overhang edge portion extending from the hole portion to a leading end of the base portion are formed by a common cut portion.2. The blade member for a fluid pump according to claim 1 , wherein:the bent portion includes, at a leading end portion of the rising edge portion, a rising leading end edge portion intersecting this rising edge portion;the base portion includes, at a leading end portion of the overhang edge portion, an overhang leading end edge portion intersecting this overhang edge portion; andat the edge portion of whichever ...

Turbofan and air-conditioning apparatus

Provided is a turbofan producing reduced noise and easily manufactured. A coupling portion between a blade main portion and a blade cover is formed in a surface region (pressure surface) parallel to a direction of air flowing over the pressure surface of each blade. With this configuration, the air sucked from a direction of a rotation axis of a turbofan is less liable to enter a gap of the coupling portion of the blade, thereby being capable of reducing noise. Further, noise is reduced so that high-precision dimensional control of the gap of the coupling portion of the blade is not required. Consequently, dimensional control at the time of manufacture is facilitated to thereby facilitate manufacture.

PUMP COMPRISING AN IMPELLER BODY PROVIDED AS AN OBLIQUE CONE

A pump comprising an impeller having a hub base and an impeller body. The impeller body comprises a base which is concentric relative to a rotational axis of the impeller, and at least one eccentric apex. 1. A pump comprising an impeller having a hub and an impeller body , wherein the impeller body comprises:a base which is concentric relative to a rotational axis of the impeller; andat least one oblique cone having an eccentric apex, the at least one oblique cone extending from the hub base.2. The pump of further comprising a tubular sleeve having an upstream open end and a downstream open end defining an annular outflow opening with the hub claim 1 ,wherein the impeller body extends into the sleeve with the eccentric apex directly adjacent to an inner surface of the sleeve.3. The pump of claim 2 , wherein the eccentric apex is connected to the inner surface of the sleeve.4. The pump of claim 2 , wherein the sleeve has a flaring shape with a larger diameter at the outflow opening and a smaller diameter at an inflow opening.5. The pump of claim 4 , wherein the flaring shape is trumpet shaped.6. The pump of claim 1 , wherein the impeller body has at least one vane extending between the eccentric apex and the base.7. The pump of claim 2 , wherein the impeller body comprises at least one trailing edge.8. The pump of claim 7 , wherein the at least one trailing edge is positioned in the annular opening between the sleeve and the hub base.9. The pump of claim 8 , wherein the impeller body has at least one vane spiraling from the eccentric apex to the trailing edge.10. The pump of claim 8 , wherein the eccentric apex and the trailing edge are arranged on a first plane claim 8 , the eccentric apex and the center point of the hub are arranged on a second plane claim 8 , and an angle between the first and second plane is an acute angle.11. (canceled)12. The pump of claim 1 , wherein at least one of the at least one oblique cones includes an inwardly curved carve-out on a back ...

CENTRIFUGAL BLOOD PUMP IMPELLER AND FLOW PATH

An impeller and rotor structure for a magnetically levitated pump define a smooth primary flow path and U-shaped secondary flow path, which extends around an annular magnetic rotor. The u-shaped secondary flow path is defined by a large outer side gap along an outer surface of the rotor, a large bottom gap along a bottom surface of the rotor and a large inner gap along an inner surface of the rotor. Shroudless impeller blades are purely radial and overhung from a thin peripheral ring attached to the annular magnetic rotor. A center post having a low aspect ratio extends through the annular rotor. The low aspect ratio is configured to prevent flow in the primary flow path from colliding directly with flow in the secondary flow path at the inner radial gap. 1. A magnetic levitation pump apparatus , comprising:a housing portion including a center post and an annular cavity concentric with the center post;an annular magnetic rotor located in the annular cavity; anda secondary flow path in the annular cavity, the secondary flow path having a U-shaped cross-section and extending around the annular magnetic rotor.2. The apparatus of claim 1 , wherein the secondary flow path is defined by a first gap between the annular magnetic rotor and an outer surface of the annular cavity claim 1 , a second gap between the annular magnetic rotor and a bottom surface of the annular cavity claim 1 , and a third gap between the annular magnetic rotor and an inner surface of the annular cavity.3. The apparatus of claim 2 , wherein the first gap claim 2 , the second gap and the third gap are between about 0.010 inches and about 0.020 inches.4. The apparatus of claim 2 , wherein the first gap claim 2 , the second gap and the third gap are between about 0.005 inches and about 0.030 inches.5. The apparatus of claim 2 , wherein a height of the annular magnetic rotor is greater than a thickness of the annular magnetic rotor.6. The apparatus of claim 2 , wherein a height of the annular magnetic ...

Pump Impeller

An impeller for a pump, the impeller comprising a main body which in use is rotatable about a central axis, the main body including a front side and a rear side, the front side having a generally spherical cap-like or dome-shaped surface with an apex region in the vicinity of the central axis and a peripheral outer region in the vicinity of the rear side, a plurality of channels extending through the main body each having an inlet opening and an outlet opening, the inlet openings being in the vicinity of the apex region and the outlet openings being in the vicinity of the peripheral outer region. 1. An impeller for a pump , the impeller comprising a main body which in use is rotatable about a central axis , the main body including a front side and a rear side , the front side having a generally spherical cap-like or dome-shaped surface with an apex region in the vicinity of the central axis and a peripheral outer region in the vicinity of the rear side , a plurality of channels extending through the main body each having a channel surface , an inlet opening and an outlet opening , the inlet openings being in the vicinity of the apex region and the outlet openings being in the vicinity of the peripheral outer region at least a part of the channel surface provides for a pumping surface.2. The impeller according to claim 1 , wherein the channels are curved.3. (canceled)4. The impeller according to claim 1 , wherein the inlet openings are spaced around the central axis.5. The impeller according to claim 1 , wherein the outlet openings are spaced around the peripheral outer region.6. The impeller according to claim 1 , wherein the distance of each channel with respect to the central axis increases when moving from the inlet opening to the outlet opening.7. The impeller according to claim 1 , wherein the inlet openings are generally oval shaped and have a long or major axis claim 1 , the long or major axis being inclined to the central axis.8. The impeller according to ...

TURBOMACHINERY

A turbomachine () configured to compress supercritical carbon dioxide is shown. The turbomachine comprises, in fluid flow series, an inlet (), an inducerless radial impeller () having a plurality of blades, and a fully vaneless diffuser (). 1. A turbomachine configured to compress supercritical carbon dioxide , the turbomachine comprising , in fluid flow series:an inlet;an inducerless radial impeller having a plurality of blades; anda fully vaneless diffuser.2. The turbomachine of claim 1 , in which the inlet is radially flared to induce a radial component in flow prior to an entry to the impeller.3. The turbomachine of claim 2 , in which a hub hade angle of the impeller at the entry thereto (γ) is from 50 to 70 degrees.4. The turbomachine of claim 3 , in which said hade angle (γ) is 60 degrees.5. The turbomachine of claim 1 , in which each of the plurality of blades is a backswept blade.6. The turbomachine of claim 5 , in which each of the plurality of blades have a blade exit angle (χ) of from −50 to −70 degrees.7. The turbomachine of claim 6 , in which each of the plurality of blades have a blade exit angle (χ) of −60 degrees.8. The turbomachine of claim 1 , in which the plurality of blades comprises:a set of main blades; anda set of splitter blades.9. The turbomachine of claim 8 , in which a meridional chord length of the splitter blades (c) is 70 percent of a meridional chord length of the main blades (c).10. The turbomachine of claim 8 , in which the impeller comprises one splitter blade for each main blade.11. The turbomachine of claim 1 , in which the radius of the inlet (r) is from 25 to 50 percent of the radius of the impeller (r).12. The turbomachine of claim 11 , in which the radius of the inlet (r) is from 30 to 50 percent of the radius of the impeller (r).13. The turbomachine of claim 1 , in which the diffuser has an annulus height ratio (b/b) of 1.14. The turbomachine of claim 1 , in which the radius of the diffuser (r) is from 1.2 to 1.8 times larger ...

IMPELLER AND FLUID MACHINE

Provided is an impeller and a fluid machine which have an annular hub () and a plurality of blades () radially arranged along an outer peripheral surface of the hub (). On a pressure surface (P) of the blade (), there are provided a first pressure surface () extending from the hub () side at an angle of 90 degrees or less with respect to the forward direction of the rotation direction (A), and a second pressure surface () extending from the first pressure surface () at an angle of more than 90 degrees with respect to the forward direction of the rotation direction (A). This configuration reduces a low-energy fluid stagnating on a suction surface side of the blade, achieving higher impeller efficiency. 1. An impeller comprising:a hub having an annular shape; anda plurality of blades radially arranged along an outer peripheral surface of the hub,the impeller being configured in such a manner that a fluid having flowed from a leading edge side of the blade along a rotation axis is discharged from a trailing edge side of the blade outward in the radial direction intersecting the rotation axis, whereina pressure surface of the blade includes:a first pressure surface extending from the hub side at an angle of 90 degrees or less with respect to the forward direction of the direction of rotation of the impeller;a second pressure surface extending from the first pressure surface at an angle of more than 90 degrees with respect to the forward direction of the direction of rotation of the impeller; anda third pressure surface extending from the second pressure surface at an angle of 90 degrees or less with respect to the forward direction of the direction of rotation of the impeller, andthe pressure surface of the blade has a curved shape bending forward in the rotation direction on an inner peripheral side, while having an S-shape formed of the first pressure surface, the second pressure surface, and the third pressure surface on the outer peripheral side.2. (canceled)3. The ...

Semi-Open Centrifugal Pump Impeller and Its Optimization Design

A process for optimizing the design of a semi-open centrifugal pump impeller involves the steps of, reducing the number of long blades and adding a medium length splitter blade and a short length splitter blade having varying circumferential distances between any two optimized long blades. Each medium length and short length splitter blade have the same outlet position, profile and thickness as the optimized long blade; however, the medium length and short length splitter blades have different inlet positions relative to the optimized long blade. The long blade, medium length splitter blade and short length splitter blade are arranged in circumferential sequence along the direction of rotation of the impeller. This optimization improves various problems arising from the original semi-open centrifugal pumps, including low efficiency, significant loss at the inlet, inlet cavitation, separation of boundary layers at the blade inlets, narrow lift range of the dead point and excessive noise.

PUMP IMPELLER AND RADIAL PUMP COMPRISING THE IMPELLER

The invention relates to a pump impeller for a radial pump with a carrier plate comprising an intake side and a rear side situated opposite the intake side, a blading being provided on the intake side for conveying a medium to be pumped, characterized in that, on the rear side of the carrier plate, at least one flow profile is situated which is configured and formed to reduce at least a difference between a pressure-induced balance of forces on the carrier plate and on a cover plate in the case of a rotation of the pump impeller in a rotational direction (DR). 1. A pump impeller for a radial pump with a carrier plate comprising:an intake side and a rear side situated opposite the intake side, a blading being provided on the intake side for conveying a medium to be pumped,wherein, on the rear side of the carrier plate, at least one flow profile is situated which is configured and formed to reduce at least a difference between a pressure-induced balance of forces on the carrier plate and on a cover plate in the case of a rotation of the pump impeller in a rotational direction (DR).2. The pump impeller according to claim 1 , wherein the at least one flow profile claim 1 , as seen in a circumferential direction (UR) claim 1 , is a ramp contour claim 1 , in particular a short ramp contour claim 1 , i.e. claim 1 , a ramp ridge claim 1 , or a long ramp contour claim 1 , i.e. claim 1 , a circular surface segment ramp.3. The pump impeller according to claim 1 , wherein n ramp contours are distributed over a circumference (U) of the pump impeller claim 1 , n being ≥2.4. The pump impeller according to claim 1 , wherein in an claim 1 , as seen in a radial direction (R) claim 1 , internal area of the rear side of the carrier plate claim 1 , the number (n) of the ramp contours is lower than in an area further outside claim 1 , which has a higher number (n) of ramp contours claim 1 , in particular an integer multiple of the number (n) claim 1 , in particular in that six ramp ...

Pump device

The present invention relates to a pump device for sucking and transferring articles, wherein the pump device comprises a pump housing, an air withdrawal opening, at least one inlet opening and an outlet opening formed in the pump housing, at least one drive device being connected to the pumping device, the pump housing further comprising a first short side formed as a semicircle or a partial circle and a second short side formed as a flat or plane surface, two long sides extending tapered from the first short side to the second short side and two planar sides, forming a closed pump housing, where at least one impeller further is arranged in the pump housing.

IMPELLER ASSEMBLY FOR CENTRIFUGAL PUMPS

The present invention relates to an impeller assembly for centrifugal pumps, comprising a first disk-like element, operatively arranged towards a coaxial inlet, facing a second disk-like element with a smaller diameter, operatively arranged towards the outlet; this second disk-like element is rigidly connected to the first disk-like element through a set of angularly spaced blades, and is centrally provided with fastening means for fastening to a drive shaft. The distinctive feature of the present invention is that the blades comprise appendices, in flat sheet form, adjacent to the second disk-like element, which are essentially located in correspondence with areas subject to lesser axial thrust. 1. An impeller assembly for centrifugal pumps , comprising a first disk-like element , operatively arranged towards a coaxial inlet of a pump and facing a second disk-like element with a smaller diameter , operatively arranged towards the delivery of said pump; said second disc-like element being rigidly connected to said first disk-like element through a set of angularly spaced blades , and being centrally provided with fastening means for fastening to a drive shaft; the impeller assembly being characterized in that said blades comprise appendices , in flat sheet form , adjacent to said second disk-like element; said appendices being essentially located at areas subject to lesser axial thrust.2. An impeller assembly claim 1 , according to claim 1 , characterized in that each of said appendix is in one piece with the corresponding blade.3. An impeller assembly claim 1 , according to claim 1 , characterized in that each appendix is constituted by a folded portion of the corresponding blade; said folded portion extending transversally to said blade substantially in correspondence of a fold line at the edge of said blade.4. An impeller assembly claim 3 , according to claim 3 , characterized in that each appendix is delimited by at least a first side defined by said fold line ...

IMPELLER BLADES STRUCTURE AND ROTOR ASSEMBLY USING SAME

An impeller blade structure includes a main body having a first through opening communicating a first side with an opposite second side of the main body. The main body is formed on the first side with angularly spaced block-like blades, which respectively include a first end contacting or not contacting with the first through opening, an opposite second end, and a first coupling section. Any two adjacent blades together define between them a passage. When a virtual line tangentially passes through a point on a circumference of the main body that is corresponding to one radially outer end of the blade, an acute included angle will be defined between the virtual line and the blade. With these arrangements, the blades produce less noise and are more durable for use when the impeller blade structure rotates. A rotor assembly including the impeller blade structure is also disclosed. 1. An impeller blade structure , comprising:a main body having a first side and an opposite second side and being formed with a first through opening, which communicates the first side with the second side; the main body including a plurality of blades formed on the first side, and the blades respectively including a first end, which can be in contact with or not in contact with a peripheral edge of the first through opening, and a second end, which is located opposite to the first end; the blades further respectively including a first coupling section, and having a first edge, a second edge and a third edge; the first and the second edge of each blade being spaced from each other and extended from the second end toward the first through opening, and the third edge being located at the first end with two opposite ends connected to the first and the second edge, such that the first, the second and the third edge together define a top surface of the blade; a radially outer end of the second edge being located corresponding to a point on a circumferential edge of the main body, such that a ...

BLOWER IMPELLER FOR A HANDHELD BLOWER

A blower impeller having a plate with a first side surface, a second side surface, and an outer circumferential edge extending between the first and second side surfaces; a front blade series extending from the first side surface, the front blade series comprising a plurality of front fins, wherein each front fin includes a first radius of curvature and a second radius of curvature; and a rear blade series extending from the second side, the rear blade series comprising a plurality of rear fins. 1. A blower impeller , comprising:a plate having a first side surface, a second side surface, and an outer circumferential edge extending between the first and second side surfaces;a front blade series extending from the first side surface, the front blade series comprising a plurality of front fins, wherein each front fin includes a first radius of curvature and a second radius of curvature; anda rear blade series extending from the second side, the rear blade series comprising a plurality of rear fins.2. The blower impeller as in claim 1 , wherein the first side surface further comprises a central hub having a detent and a sloped transition portion.3. The blower impeller as in claim 2 , wherein the sloped transition portion comprises a gradient claim 2 , the gradient transitioning radially outward from the central hub toward the outer circumferential edge.4. The blower impeller as in claim 3 , wherein the first side surface includes a substantially flat portion extending radially from the outer circumferential edge to substantially adjacent the central hub.5. The blower impeller as in claim 3 , wherein the sloped transition portion includes a substantially linear plane claim 3 , a concave-sloping plane or a convex-sloping plane.6. The blower impeller as in claim 1 , further comprising a cylindrical projection claim 1 , wherein the cylindrical projection is centrally located on the second side surface and extends perpendicularly therefrom.7. The blower impeller as in claim ...

CENTRIFUGAL COMPRESSOR IMPELLER WITH NONLINEAR BACKWALL

A centrifugal compressor impeller includes a plurality of blades on a front side that extend from a first axial side to an outer radial end of the impeller. The centrifugal impeller includes a back side having a nonlinear backwall. The backwall can include a flat area hear a bore of impeller, a flat area near a tip of the impeller, and a convex surface between the flat areas of the bore and the tip. In some forms the impeller further includes a concave surface between the convex surface and the tip to form an s-shape. A transition or inflection point can denote the change from convex to concave. The convex and/or concave surfaces can take any variety of forms such as constant radius sections and/or compound curves. 1. An apparatus comprising:a centrifugal impeller having a blade side and a backwall side, the backwall side having a backwall and a hub region configured with a bore to be affixed to a rotatable shaft, the blade side including a plurality of impeller blades that extend from a first axial end to a first radial end of the centrifugal impeller, the plurality of impeller blades configured to receive a working fluid in the first axial end, compress the working, and discharge the working fluid through the first radial end when the centrifugal impeller is being operated, the backwall of the centrifugal impeller defined by:a flat area that extends inward from an outermost radial extent of the centrifugal impeller to a first location;a flat area in the hub region that extends outward from an outer diameter of the bore to a second location; anda compound curve located between the first location and the second location.2. The apparatus of claim 1 , wherein the compound curve is a curve having first radius of curvature in a radial inward region of the compound curve claim 1 , and a curve having a second radius of curvature in a region radial outward of the radial inward region.3. The apparatus of claim 2 , wherein the compound curve is a convex curve at the first ...

Pump apparatus

The present invention relates to a pump apparatus for delivering a liquid. The pump apparatus includes a pump (1) having an impeller (5), an electric motor (7) for rotating the impeller (5), and an inverter (10) for driving the electric motor (7) at variable speed. The impeller (5) has a non-limit load characteristic in a predetermined discharge flow-rate range (R). The inverter (10) is configured to drive the electric motor (7) at a preset target operating point (TO) with a rotation speed higher than a rotation speed corresponding to a power frequency of a commercial power source.

MACHINE AND PROCESS FOR FILTERLESS WET REMOVAL OF PARTICLES FROM AND HUMIDIFICATION OF AIR

An improved air scrubber has an improved, more efficient, more robust impeller and impeller housing for mixing incoming air with water, scrubbing the air with increased efficiency and lower mean time between failures. Also water flow through the system is improved to prevent loss of scrubbing performance and to reduce user workload. In addition to these improvements, the water intake system has been redesigned to use less water, prevent using too much water, and to prevent previously common errors that require users to drain water from the impeller housing. 1. An improved impeller comprising:a central hub having an axis of rotation; andeight or more blades each having a first end and a second end, each first end being coupled to the hub at positions which together define a circle having a center at the axis of rotation, each position being at equal distances away from each other position around the hub, each blade being positioned in a plane of rotation orthogonal to the axis of rotation, wherein the improved impeller has a width and a diameter, wherein the diameter is defined as straight-line distance across a circle formed at the second ends of the blades when the blades are rotated in a plane of rotation perpendicular to the axis of rotation, and the width of defined as a width of each blade parallel to the axis of rotation wherein the blades each have a same width to diameter ratio which is between 0.09 and 0.125.2. The improved impeller of further wherein each blade is curved.3. The improved impeller of further wherein each blade is curved in a diminishing radius from the first end to the second end.4. The improved impeller of further wherein a mathematical curve defining the diminishing radius is exponential.5. The improved impeller of further wherein an angle formed in a plane orthogonal to the axis of rotation at the first end is between 75 and 105 degrees claim 1 , wherein the angle measured at any given point on a given blade is the curvature of the given ...

Centrifugal pump and method for manufacturing the same

A centrifugal pump is provided, which includes a rotor assembly, the rotor assembly includes an impeller including multiple blades and a blade fixing portion, the blades and the blade fixing portion are integrally formed by injection molding, and the blades are circumferentially distributed at equal intervals along the blade fixing portion. The blade includes a first side, a second side, a blade top portion and a blade root portion, and the blade root portion and the blade fixing portion are fixed by injection molding. The blade top portion is a cantilever end of the blade, and the first side and the second side are arranged between the blade root portion and the blade top portion. The rotor assembly arranged in such manner can improve the hydraulic efficiency and lift of the centrifugal pump.

Radial impeller and casing for centrifugal pump

An improved impeller and a casing for a centrifugal pump are disclosed. The impeller comprises vanes which sweep an arc around an impeller axis to provide a smooth path past the impeller and through the pump. The casing is constructed to allow maximum flow rate at the eye of the impeller then shrink the flow channel to reduce internal recirculation promote efficiency, further limiting the effect of damaging forces. The impeller is suited for use in pumps in which a high head is required and in which only low shear forces must be applied to the fluid moving through the pump.

Turbine compressor wheel with axially extended blades

A compressor wheel for a turbocharger has an improved geometry that provides improved performance as compared with a comparably sized conventional compressor wheel by having the radially inward portion of the primary blades sweep upwardly into the upper region of the hub portion. The through bore and integral nut of conventional compressor wheels is eliminated and replaced with a blade extension that has an angled upper edge which extends downwardly and radially outwardly from the hub portion, effectively increasing the size of the blade, the amount of air movement and the amount of power generated, without increasing the overall cost, size or mass of the compressor wheel.

Turbopump for a rocket engine having a radial stage

A turbopump for a rocket engine includes a radial pump having a wheel with vanes in a central body that is essentially rotationally symmetrical. The central body includes two separate outflow areas for one propellant component of the rocket engine, where a first portion of the propellant component is conveyed through a first of the outflow areas into a rocket combustion chamber and a second portion of the propellant component is conveyed through a second of the outflow areas into a gas generator. The first outflow area and the second outflow area have different geometric dimensions such that the propellant component in the first outflow area can be provided at a first propellant throughput and at a first exit pressure that differ from a second propellant throughput and a second exit pressure of the second outflow area.

Drain pump for washing machine appliance

A washing machine appliance and pumps therefore are provided. In one example aspect, a drain pump for a washing machine appliance includes features for improving pump performance and sand and debris management. The drain pump includes a pump housing and a pump body defining a pump chamber in which an impeller having a disk and blades is rotatably mounted. The pump body has a base defining a pump body recess. An outer rim of the base defines an outer periphery of the pump body recess. The disk is spaced from the outer rim so that sand and debris can be flushed from beneath the impeller. A sloped surface of the outer rim also facilitates removal of sand and debris from beneath the impeller. A labyrinth is defined beneath blades of the impeller to prevent sand and debris from entering an area between a seal and a shaft of the impeller.

IMPELLER FOR FLUID PUMP

An impeller () for a fluid pump according to the present invention comprises a shroud () that has a disk shape and is drivingly rotated about a center axis, and a cover () comprising a cover main body () having a truncated cone shape with an inlet port () for a fluid formed at a center and a plurality of blades () arranged around a center axis of the cover main body (). The cover () and the shroud () are joined to each other with a welding contacting portion () and a welding contacted portion () welded to each other in a center axis direction, in a state where another end surface of the shroud () and a distal end portion () of the blades () are in parallel with each other.

Centrifugal Impeller Assembly Unit

Embodiments are provided for a fluid pump having a hollow shaft centrifugal impeller capable of using suction or pressure to move large volume flows of fluids including liquids and gasses. In one or more non-limiting embodiments, the pump has an impeller assembly that is capable of being attached to the inner circumference of a housing tube and said housing tube is connected to a magnetic rotary. The magnetic rotary is capable of spinning the hollow shaft and the impeller assembly inside the hollow shaft and moving the fluid through the hollow shaft. 1. A centrifugal impeller comprising:a centrifugal impeller having an outer and an inner circumference, said inner circumference comprising an inlet end and an outlet end, wherein said inlet and outlet ends are substantially perpendicular to said inner circumference; andtwo or more impeller blades, wherein the two or more impeller blades are connected at one end to the inner circumference of the centrifugal impeller and are positioned radially outwardly at the inlet end and extend radially inwardly to the outlet end, wherein said two or more impeller blades form at least one channel between the two or more impeller blades that narrows in the direction of the outlet end for compressing a fluid as it travels from said inlet end to said outlet end.2. The centrifugal impeller of claim 1 , five further comprising one or more outlet blades.3. The centrifugal impeller of claim 1 , wherein an edge of said one or more outlet blades forms a wedge shape.4. The centrifugal impeller of claim 1 , wherein the two or more impeller blades include a total of five impeller blades.5. The centrifugal impeller of claim 1 , wherein an edge of said one or more impeller blades forms a wedge shape.6. The centrifugal impeller of claim 1 , further comprising a hollow shaft having an outer circumference.7. The centrifugal impeller of claim 6 , wherein the outer circumference of the hollow shaft includes one or more slots.8. The centrifugal impeller ...

MOLTEN METAL ROTOR WITH HARDENED TOP

Embodiments of the invention are directed to a rotor for a molten metal pump and a molten metal pump including the rotor. The rotor has a main body and a top comprised of a material that is at least twice as hard as the main body. The top, among other things, may form a first portion of each rotor blade wherein the first portion directs molten metal into a pump chamber or other structure in which the rotor is mounted. 1. A rotor for use in molten metal , the rotor comprising a graphite body , a top surface , and a plurality of vanes each having a leading face and a trailing face , and hardened portions comprising hardened material at least twice as hard as the graphite body , the hardened portions comprising: the top surface , less than all of the leading face , and less than all of the trailing face.2. The rotor of claim 1 , wherein the hardened portions are comprised of material that is 2-3 times as hard as the graphite body.3. The rotor of claim 1 , wherein the hardened portions are comprised of material that is 2-4 times as hard as the graphite body.4. The rotor of claim 1 , wherein the hardened portions are comprised of material that is 2-5 times as hard as the graphite body.5. The rotor of claim 1 , wherein the hardened portions are cemented to the graphite body.6. The rotor of claim 1 , wherein the hardened portions are comprised of silicon carbide.7. The rotor of that comprises a plurality of blades claim 1 , wherein each blade has a first section and a second section claim 1 , and the first section pushes molten metal towards the second section claim 1 , and the second section pushes molten metal outward claim 1 , wherein the entire first section is comprised of hardened material.8. The rotor of claim 7 , wherein part of the second section is comprised of hardened material.9. The rotor of claim 7 , wherein the at least part of the second portion formed by the hardened material is immediately beneath the first portion.10. The rotor of that further includes a ...

Curved surface processing method for inlet edge of cylindrical blade of centrifugal pump impeller

A curved surface processing method for an inlet edge of a cylindrical blade of a centrifugal pump impeller includes following steps. A center of an impeller is used as a center to draw circles having respective diameters. A first point having a first distance from the center is determined on a concave side curve at a top of the blade, and a second point having a second distance from the center is determined on a concave side curve at a bottom of the blade. By improving the shape of a blade in an impeller, the angle of an inlet edge at the top of the blade is more close to the tangent direction, and the inlet angle of the top blade is reduced. A twisted surface is formed between a first arc segment at the top and a second arc segment at the bottom.

WATER PUMP DEVICE

A water pump device including a driving motor, a housing, a magnetic rotating member and a magnetic impeller unit is provided. The driving motor includes a rotating shaft extending outside the housing. The housing is disposed on the driving motor and includes an accommodation portion and a water drawing portion. The water drawing portion has a water inlet and a water outlet. The magnetic rotating member is disposed in the accommodation portion. The rotating shaft is disposed in the magnetic rotating member. The magnetic rotating member includes alternately arranged first surfaces and second surfaces, and their respective magnetic poles are different. The magnetic impeller unit is disposed opposite to top of the magnetic rotating member and located in the water drawing portion. The magnetic impeller unit includes alternately arranged third surfaces and fourth surfaces, and their respective magnetic poles are different. 1. A water pump device , comprising:a driving motor including a rotating shaft;a housing being disposed on the driving motor, wherein the housing includes an accommodation portion and a water drawing portion, the rotating shaft is disposed in the accommodation portion and extends outside the housing, and the water drawing portion has a water inlet and a water outlet;a magnetic rotating member disposed in the accommodation portion, wherein the rotating shaft is disposed in the magnetic rotating member, the magnetic rotating member includes alternately arranged a plurality of first surfaces and a plurality of second surfaces, and magnetic poles of the first surfaces are different from magnetic poles of the second surfaces; anda magnetic impeller unit disposed opposite to top of the magnetic rotating member and located in the water drawing portion, the magnetic impeller unit includes alternately arranged a plurality of third surfaces and a plurality of fourth surfaces, and magnetic poles of the third surfaces are different from magnetic poles of the ...

Vacuum Device for Collecting Light and Heavy Material

A vacuum device has a motor-driven blower wheel with suction side and with pressure side with pressure channel and blow-out opening. An intake pipe at the suction side has an intake opening and a discharge opening at opposed ends. The intake pipe conveys a suction airflow entraining first and second collected materials. Through the discharge opening the first collected material is discharged from the intake pipe. A blower inlet opening is formed in a wall of the intake pipe. Blower inlet opening, blower wheel, and pressure channel are configured such that second collected material passes through blower inlet opening and blower wheel into the pressure channel for discharge through blow-out opening. The blower inlet opening, in longitudinal direction of the intake pipe, is positioned between discharge opening and intake opening at a first spacing to the intake opening and at a second spacing to the discharge opening. 1. A vacuum device comprising:a motor;a blower wheel operatively connected to the motor to be driven by the motor;the blower wheel comprising a suction side and further comprising a pressure side;an intake pipe arranged at the suction side of the blower wheel, the intake pipe comprising an intake opening at a first end of the intake pipe and an outlet opening at a second opposite end of the intake pipe, wherein the intake pipe conveys a suction air flow for picking up and entraining a first collected material and a second collected material;the intake pipe comprising a discharge opening configured to discharge the first collected material from the intake pipe, wherein the outlet opening at the second end of the intake pipe is formed by the discharge opening;the intake pipe comprising a blower inlet opening formed in a wall of the intake pipe for supplying air to the blower wheel;a pressure channel comprising a blow-out opening, the pressure channel formed at the pressure side of the blower wheel;wherein the blower inlet opening, the blower wheel, and the ...

CENTRIFUGAL IMPELLER FOR A TURBINE ENGINE

A centrifugal impeller () having an axis of rotation (X) extending from front to rear, and comprising a body () extending around the axis of rotation (X), the body () having a front portion and a rear portion of larger section than the front portion, the impeller also have blades () projecting from a front face () of the body (), the body () presenting a setback () in its front face () between two consecutive blades (), which setback () is situated at a circumferential distance from said two blades (). 1. A centrifugal impeller having an axis of rotation extending from front to rear , and comprising a body extending around the axis of rotation , the body having a front portion and a rear portion of larger section than the front portion , the impeller also having blades projecting from a front face of the body , the body presenting a setback in its front face between two consecutive blades , which setback is situated at a circumferential distance from said two blades , and the impeller including a stiffener configured to reinforce a portion of the body made thinner by the setback.2. The centrifugal impeller according to claim 1 , wherein the setback is provided on a radially outer portion of the body.3. The centrifugal impeller according to claim 1 , wherein the setback leads to the radially outer periphery of the body.4. The centrifugal impeller according to claim 1 , wherein the setback has an outline that is generally U-shaped claim 1 , wherein the branches of the U-shape lead to the radially outer periphery of the body.5. The centrifugal impeller according to claim 1 , wherein the setback is situated between a pressure side of one of the two blades and a suction side of the other of the two blades claim 1 , and is closer to said suction side than to said pressure side.6. The centrifugal impeller according to claim 1 , wherein the stiffener comprises extra thickness provided on the rear face of the body.7. The centrifugal impeller according to claim 1 , wherein ...

TECHNIQUE TO IMPROVE THE PERFORMANCE OF A PUMP WITH A TRIMMED IMPELLER USING ADDITIVE MANUFACTURING

A pump features a trimmed impeller having a trimmed impeller diameter that is less than a standard full-sized diameter of a standard full-sized impeller for a standard full-sized casing, and having a circumferential outer edge; and a modified standard full-sized casing having dimensions corresponding to the standard full-sized casing and configured to house the trimmed impeller for pumping a fluid, having an outer peripheral wall, and having an inner annular volute portion between the circumferential outer edge of the trimmed impeller and the outer peripheral wall configured with a volume of material deposited using an additive manufacturing process so as to fill in vacant space otherwise caused by the trimmed impeller diameter being less than the standard full-sized impeller diameter. The additive manufacturing process is a directed energy deposition. 1. A pump comprising:a trimmed impeller having a trimmed impeller diameter that is less than a standard full-sized diameter of a standard full-sized impeller for a standard full-sized casing, and having a circumferential outer edge; anda modified standard full-sized casing having dimensions corresponding to the standard full-sized casing and configured to house the trimmed impeller for pumping a fluid, having an outer peripheral wall, and having an inner annular volute portion between the circumferential outer edge of the trimmed impeller and the outer peripheral wall configured with a volume of material deposited using an additive manufacturing process so as to fill in vacant space otherwise caused by the trimmed impeller diameter being less than the standard full-sized impeller diameter.2. A pump according to claim 1 , wherein the additive manufacturing process is a directed energy deposition.3. A pump according to claim 1 , wherein the volute includes an impeller cut-away that has an extended impeller cut-away portion formed with a corresponding volume of material deposited using the additive manufacturing process. ...

IMPELLER AND WATER PUMP HAVING THE SAME

An impeller includes a base plate, a hub protruding from the base plate, and a number of blades connected to the base plate and extending from a lateral surface of the hub toward an edge of the base plate. Opposite sides of each of the blades are a working surface and a non-working surface. The base plate is divided into a plurality of sub-plates by the plurality of blades. Each of the sub-plates is located between two adjacent blades and connected to the non-working surface of one of the two adjacent blades and the working surface of the other one of the two adjacent blades. A distance from an edge of each of the sub-plates to a center of rotation of the impeller is varied. 1. An impeller comprising:a base plate;a hub protruding from the base plate; anda plurality of blades connected to the base plate and extending from a lateral surface of the hub toward an edge of the base plate, opposite sides of each of the blades being a working surface and a non-working surface;wherein the base plate is divided into a plurality of sub-plates by the plurality of blades, each of the sub-plates is located between two adjacent blades and connected to the non-working surface of one of the two adjacent blades and the working surface of the other one of the two adjacent blades, and a distance from an edge of each of the sub-plates to a center of rotation of the impeller is varied.2. The impeller according to claim 1 , wherein the distance from an edge of each of the sub-plates to the center of rotation of the impeller is gradually reduced and then gradually increased claim 1 , along a circumferential direction starting from the non-working surface of one of the two adjacent blades toward the working surface of the other one of the two adjacent blades.3. The impeller according to claim 1 , wherein distance between an end of each sub-plate away from the hub and the center of rotation of the impeller is the same.4. The impeller according to claim 1 , wherein a distance from a joint ...

ELECTRIC CENTRIFUGAL PUMP WITH CONTAINMENT SHELL GROOVES

An electric centrifugal pump having a motor housing, a pump head, a containment shell, and a rotor assembly consisting of a pump impeller and a permanent magnet rotor, wherein the pump head with the containment shell defines a wet chamber, in which the rotor assembly is arranged rotationally around a longitudinal motor axis, the containment shell with the motor housing defines a dry chamber, in which a wound stator is arranged, and the permanent magnet rotor is arranged within the stator and a hollow-cylindrical region of the containment shell. Particle accumulations in the region between the containment shell and the permanent magnet rotor cannot occur or can only occur to a very minor extent and that the consequences of impurities in the wet chamber are reduced in order to prevent premature wear or a blockage of the centrifugal pump. 1. An electric centrifugal pump having a longitudinal motor axis , the pump comprising:a motor housing;a pump head;a containment shell having a hollow cylindrical region with an inner circumference;a wet chamber defined by the pump head and the containment shell;a dry chamber defined by the motor housing and the containment shell;a stator arranged within the dry chamber, the stator having pole gaps;a rotor assembly consisting of a pump impeller and a permanent magnet rotor, the rotor assembly arranged in the wet chamber rotating around the longitudinal motor axis; anda permanent magnet rotor arranged within the stator and the hollow-cylindrical region of the containment shell, wherein the containment shell includes at the inner circumference one or more containment shell grooves, which are arranged parallel to the longitudinal motor axis and/or parallel to the pole gaps of the stator.2. The electric centrifugal pump according to claim 1 , wherein the containment shell grooves have an asymmetrical cross section.3. The electric centrifugal pump according to claim 1 , wherein the containment shell grooves comprise an undercut so that the ...

Impeller and fan including the impeller

An impeller of this disclosure includes a hub having a ring shape; and a plurality of blades that are provided on an outer periphery of the hub, wherein the blade has a trailing edge formed such that an inner side of a radial width of the blade is curved in a direction opposite to a rotation direction, in a plan view as viewed in a direction of a rotation axis.

Double-Sided Single Impeller With Dual Intake Pump

A double-sided impeller with a dual intake fluid housing apparatus is designed to suction an extraneous fluid through both a first intake and a second intake, where gases trapped in the fluid housing may escape and mitigate cavitation. The apparatus includes a fluid impeller, a fluid housing, an output volute, and a shaft. The fluid impeller is double-sided with a first plurality of blades and a second plurality of blades respectively adjacent to the first intake and the second intake. The fluid housing surrounds the fluid impeller and in fluid communication with the extraneous fluid. The shaft is rotationally coupled with the fluid impeller such that torque applied to the shaft applies torque to the fluid impeller. The output volute is in fluid communication with the fluid housing and tangentially positioned such that the motion of the extraneous fluid in the fluid housing is directed toward the output volute. 1. A double-sided single impeller with dual intake pump comprises:a fluid impeller;a fluid housing;an output volute;a shaft;the fluid impeller comprises an impeller body, a first plurality of blades, and a second plurality of blades;the fluid housing comprises a first intake and a second intake;the first intake traversing into the fluid housing;the second intake traversing into the fluid housing;the first intake and the second intake being positioned opposite each other along the fluid housing;the output volute being in fluid communication with the fluid housing;the fluid impeller being positioned between the first intake and the second intake;the impeller body being positioned between the first plurality of blades and the second plurality of blades;the first plurality of blades and the second plurality of blades being radially distributed about the impeller body;the first plurality of blades being positioned adjacent to the first intake;the second plurality of blades being positioned adjacent to the second intake; andthe shaft being rotationally coupled with ...

Intelligent Clogging-Free Water-Cooled Multifunctional Pump

An intelligent control clogging-free water-cooled multifunctional pump includes a housing, a U-shaped water-through tank, a motor, an axial flow style cover plate, a flexible rubber conical impeller, a double-channel conical diffuser, a filter and an intelligent water level controller. The motor is placed inside the housing. The motor is provided with a control board. The U-shaped water-through tank is placed under the housing. The flexible rubber conical impeller is coaxially connected to the motor. The axial flow style cover plate is placed at the bottom of the U-shaped water-through tank. The double-channel conical diffuser is disposed under the cover plate and the conical pattern of the flexible rubber impeller is consistent with those disposed on the double-channel diffuser. 1. An intelligent control clogging free water-cooled multifunctional pump , comprising a housing , a U-shape water-through tank , a motor , an axial flow style cover plate , a flexible rubber conical impeller , a double-channel conical diffuser , a filter and an intelligent water level controller; wherein the motor which contains a control panel is disposed inside the housing and sealed by an O-ring; the U shape water-through tank is disposed under the housing and connects to the housing via screws; the flexible rubber conical impeller coaxially connects to the motor; the axial flow style cover plate is disposed at the bottom of the U-shape water-through tank; the double-channel conical diffuser is disposed under the axial flow style cover plate and connects to the U-shaped water through tank via screws; the filter is disposed under the double-channel conical diffuser and connects thereto via screws; the intelligent water lever controller is placed outside of U-shape tank and connects with the housing via slip snap joint structure , the conical pattern of the flexible rubber impeller is consistent with those of the double-channel conical diffuser , when foreign particles go inside the ...

Centrifugal pump impeller

Centrifugal pump impeller

Ступень центробежного насоса

Изобретение относится к области насосостроения. Ступень центробежного насоса содержит как минимум рабочее колесо и направляющий аппарат. Межлопаточные каналы выполнены круглой или близкой к кругу формы в поперечном сечении. Близкой к кругу в данном случае считается форма, в которой расстояние от оси канала до наименее удаленной точки на стенке канала составляет не менее 90% расстояния от оси канала до наиболее удаленной точки. Такая форма позволит уменьшить либо предотвратить образование вихрей, вызванных неравномерностью распределения скоростей и давлений по сечению. Изобретение направлено на уменьшение потерь напора, вызванных неравномерностью распределения скоростей и давлений по сечению канала, что позволит повысить общий кпд ступени. 1 з.п. ф-лы, 3 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 688 873 C1 (51) МПК F04D 1/06 (2006.01) F04D 29/22 (2006.01) F04D 29/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 1/06 (2019.02); F04D 29/225 (2019.02); F04D 29/2216 (2019.02); F04D 29/44 (2019.02) (21)(22) Заявка: 2018118747, 21.05.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Шмырин Данил Петрович (RU) Дата регистрации: 22.05.2019 (56) Список документов, цитированных в отчете о поиске: RU 2122653 C1, 27.11.1998. US 2605713 A1, 05.08.1952. DE 325195 С, 14.09.1920. SU 687262 A1, 25.09.1979. US 5252027 A1, 12.10.1993. (45) Опубликовано: 22.05.2019 Бюл. № 15 R U (54) Ступень центробежного насоса (57) Реферат: Изобретение относится к области насосостроения. Ступень центробежного насоса содержит как минимум рабочее колесо и направляющий аппарат. Межлопаточные каналы выполнены круглой или близкой к кругу формы в поперечном сечении. Близкой к кругу в данном случае считается форма, в которой расстояние от оси канала до наименее удаленной точки на стенке канала составляет не менее 90% расстояния Стр.: 1 от оси канала до наиболее удаленной точки. Такая форма позволит уменьшить ...

Рабочее колесо для центробежного насоса

1. Рабочее колесо для центробежного насоса, при этом рабочее колесо содержит ступицу (36) с по меньшей мере одной цельной и жесткой рабочей лопаткой (38), где указанная по меньшей мере одна цельная и жесткая рабочая лопатка (38) имеет переднюю краевую область (48), заднюю краевую область (50), центральную область (С), толщину в центральной области (С), боковой край, нагнетающую поверхность (44) и засасывающую поверхность (46), причем передняя краевая область (48) указанной по меньшей мере одной цельной и жесткой рабочей лопатки (38) снабжена закругленной или утолщенной частью, имеющей толщину, большую, чем толщина в центральной области (С), отличающееся тем, что задняя краевая область (50) указанной по меньшей мере одной цельной и жесткой рабочей лопатки (38) является закругленной посредством закругления с тем, чтобы иметь толщину, большую, чем толщина в центральной области (С).2. Рабочее колесо по п. 1, отличающееся тем, что закругление в задней краевой области (50) выполнено на нагнетающей поверхности (44) рабочей лопатки (38).3. Рабочее колесо по п. 1 или 2, отличающееся тем, что закругление является в основном круглым в своем сечении.4. Рабочее колесо по п. 1, отличающееся тем, что толщина рабочей лопатки (38) в задней краевой области (50) составляет порядка 1,1*толщины рабочей лопатки в центральной области С.5. Рабочее колесо по п. 3, отличающееся тем, что закругление имеет диаметр, составляющий по меньшей мере 1,1*толщины рабочей лопатки в центральной области (С), предпочтительно, по меньшей мере 1,3*толщины рабочей лопатки в центральной области (С).6. Рабочее колесо по п. 1, отличающееся тем, что закругление в передней краевой области (48) выполнено на засасыв РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F04D 29/00 (13) 2013 142 747 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013142747/06, 19.09.2013 (71) Заявитель(и): ЗУЛЬЦЕР ПУМПЕН АГ (CH) Приоритет(ы): (30) Конвенционный приоритет: 20.09.2012 ...

多级叶片离心轮

本发明公开一种多级叶片离心轮，其包括前盖板、多组叶片和轮毂，多组叶片包括第一级叶片、第二级叶片和短叶片，在所述轮毂一个表面上，所述第一级叶片的多个叶片按照相同的安放角配置于内围，所述第二级叶片的多个叶片按照相同的安放角配置于外围，所述第一级叶片和所述第二级叶片交错逐级分布，多个所述短叶片分布在所述第二级叶片之间。本发明的离心轮可有效抑制泵在偏离设计工况运行时叶片通道内的流动分离，提高流动均匀性，达到降低泵振动量级的目的。

Rotary pump for dry-up job (versions) and method of its production (versions)

FIELD: engines and pumps. SUBSTANCE: rotary pump comprises multiple radial impellers and multiple radial diffusers with multiple vanes. Diffuser vanes have trailing edges flexing at transition section at angle making, at least, thirty degrees, into diffuser outlet channels. Note here that multiple diffuser vanes form diffuser channels extending through said transition section and into appropriate diffuser outlet channel with minimum change in cross-section area to decrease fluid separation. EFFECT: higher pump efficiency. 24 cl, 6 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 488 024 (13) C2 (51) МПК F04D 1/06 (2006.01) F04D 13/10 (2006.01) F04D 29/44 (2006.01) F04D 29/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2008139345/06, 02.10.2008 (24) Дата начала отсчета срока действия патента: 02.10.2008 (73) Патентообладатель(и): ШЛЮМБЕРГЕР ТЕКНОЛОДЖИ Б.В. (NL) R U Приоритет(ы): (30) Конвенционный приоритет: 03.10.2007 US 11/866,966 (72) Автор(ы): ЭСЛИНДЖЕР Дэвид (US) (43) Дата публикации заявки: 10.04.2010 Бюл. № 10 2 4 8 8 0 2 4 (45) Опубликовано: 20.07.2013 Бюл. № 20 (56) Список документов, цитированных в отчете о поиске: US 2003/0010501 A1, 16.01.2003. SU 1350382 A1, 07.11.1987. EA 200700866 A2, 31.08.2007. JP 60190695 A, 28.09.1985. 2 4 8 8 0 2 4 R U (54) ЦЕНТРОБЕЖНЫЙ НАСОС ДЛЯ ОТКАЧИВАНИЯ ТЕКУЧИХ СРЕД (ВАРИАНТЫ) И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ (ВАРИАНТЫ) (57) Реферат: Группа изобретений может быть применена в насосах, используемых в буровых скважинах. Центробежный насос содержит множество радиальных рабочих колес и множество радиальных диффузоров с множеством лопаток диффузора. Лопатки диффузора содержат задние кромки, сгибающиеся на переходном участке под углом, по меньшей мере, тридцать градусов в соответствующие выпускные каналы диффузоров. При этом множество лопаток диффузора образуют каналы диффузора, которые проходят через переходный участок и в соответствующий выпускной канал диффузора с ...

Impellar unit using pump

1. 청구범위에 기재된 고안이 속한 기술분야 1. TECHNICAL FIELD OF THE INVENTION 수중펌프용 임펠러유니트 Impeller Unit for Submersible Pump 2. 고안이 해결하려고 하는 기술적 과제 2. The technical problem the invention is trying to solve 기존 수중펌프에 상하로 다단조립되는 임펠러유니트간의 슬립현상으로 인한 펌핑효율의 부정확도를 개선하고, 임펠러가 가진 구조적인 문제점으로 인한 펌핑효율의 저조성을 개선코져 하는 것임. It is to improve the inaccuracy of pumping efficiency due to slip phenomenon between impeller units which are assembled up and down in the existing submersible pump, and to improve the low composition of pumping efficiency due to the structural problem of impeller. 3. 고안의 해결방법의 요지 3. Summary of solution of design 임펠러유니트(4)의 임펠러케이싱(6)저부에는 이웃하는 임펠러유니트(4)의 착탈캡(8)상의 유로(11)에 끼움조립되어 샤프트(3) 회전시 각각의 임펠러유니트(4)간의 슬립을 방지될 수 키이(9)를 하나 이상 형성하며, 임펠러케이싱(6)내에 조립되는 다수개의 베인(12, 12')을 가진 임펠러(7)의 하단 외연부에는 펌핑되는 유체를 외단부에서 만곡형으로 회절되게 토출하는 소정의 테이퍼각(α)을 형성한 것이다. The bottom of the impeller casing (6) of the impeller unit (4) is fitted into the flow path (11) on the detachable cap (8) of the neighboring impeller unit (4) so that the slip between each impeller unit (4) when the shaft (3) rotates. One or more keys 9 can be prevented, and the lower end of the impeller 7 having a plurality of vanes 12 and 12 'assembled in the impeller casing 6 has a pumped fluid at its outer end. The predetermined taper angle (alpha) which discharges so that diffraction into a shape | mold is formed. 4. 고안의 중요한 용도 4. Important uses of the devise 수중펌프용 임펠러유니트 Impeller Unit for Submersible Pump

Radial flow axial pump with asymmetric channels and method of forcing fluid hereby

FIELD: engines and pumps. SUBSTANCE: proposed pump comprises multiple channel and impeller with one or more asymmetric channels confined by, at least, various-height vanes on suction and discharge sides. Note here that height of vanes on suction side is smaller than that on discharge side. EFFECT: reduced pulsations, hence, higher efficiency. 12 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 444 647 (13) C2 (51) МПК F04D 1/00 (2006.01) F04D 29/22 (2006.01) F04D 29/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2006140979/06, 20.11.2006 (24) Дата начала отсчета срока действия патента: 20.11.2006 (73) Патентообладатель(и): ШЛЮМБЕРГЕР ТЕКНОЛОДЖИ Б.В. (NL) R U Приоритет(ы): (30) Конвенционный приоритет: 21.11.2005 US 11/164,372 (72) Автор(ы): ЭСЛИНДЖЕР Дэвид М. (US) (43) Дата публикации заявки: 27.05.2008 Бюл. № 15 2 4 4 4 6 4 7 (45) Опубликовано: 10.03.2012 Бюл. № 7 2 4 4 4 6 4 7 R U Адрес для переписки: 129010, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. С.А.Дорофееву (54) ЦЕНТРОБЕЖНЫЙ ОСЕВОЙ НАСОС, ИМЕЮЩИЙ НЕОСЕСИММЕТРИЧНЫЕ КОНТУРЫ КАНАЛОВ, И СПОСОБ НАГНЕТАНИЯ ТЕКУЧЕЙ СРЕДЫ С ЕГО ИСПОЛЬЗОВАНИЕМ (57) Реферат: Группа изобретений относится к области транспортировки текучей среды. Центробежный осевой насос содержит множество каналов, рабочее колесо, имеющее один или более неосесимметричных контуров каналов, ограниченных по меньшей мере частично лопастями на стороне всасывания и стороне нагнетания неравной высоты, при этом высота лопастей на стороне всасывания меньше высоты лопастей на стороне нагнетания. Изобретения направлены на уменьшение пульсации, приводящей к неудовлетворительной работе насоса, за счет снижения воздействия вторичных потоков и вихрей на основной поток. 2 н. и 10 з.п. ф-лы, 5 ил. Ñòð.: 1 ru C 2 C 2 (56) Список документов, цитированных в отчете о поиске: GB 2053368 А, 04.02.1981. SU 1756646 A1, 23.08.1992. SU 194553 A, 30.03.1967. US ...

Centrifugal multi-stage pump impeller

FIELD: machine building. SUBSTANCE: invention relates to the field of centrifugal hydraulic machines and can be used in the extractive industry, as well as in agriculture and for household needs. Essence of invention consists in that impeller of centrifugal multistage pump comprises main and cover disks, between which there are blades, wherein flow part of impeller has bend and reverse slope and is characterized by that it additionally contains auxiliary blades, and value of angle between tangents to output edges of main and covering discs and transverse plane is from 40 to 80°. EFFECT: technical result, to which the invention is aimed, is to improve the mass and dimensions characteristics of the impeller of the centrifugal multi-stage pump with the attendant retention of its efficiency. 10 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 700 991 C1 (51) МПК F04D 29/22 (2006.01) F04D 1/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 29/2216 (2019.08); F04D 1/06 (2019.08) (21)(22) Заявка: 2019104012, 13.02.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью Научно-производственная фирма "АДЕС" (RU) Дата регистрации: 24.09.2019 (45) Опубликовано: 24.09.2019 Бюл. № 27 2 7 0 0 9 9 1 R U (54) Рабочее колесо центробежного многоступенчатого насоса (57) Реферат: Изобретение относится к области центробежного многоступенчатого насоса центробежных гидравлических машин и может содержит основной и покрывной диски, между быть использовано в добывающей которыми расположены лопатки, при этом промышленности, а также сельском хозяйстве и проточная часть рабочего колеса имеет перегиб для бытовых нужд. Технический результат, на и обратный уклон и отличается тем, что достижение которого направлено изобретение, дополнительно содержит вспомогательные заключается в улучшении массогабаритных лопатки, а величина угла между касательными к характеристик ...

Impeller for centrifugal pump, centrifugal pump, as well as its use

FIELD: machine building.SUBSTANCE: present invention relates to impeller (40) for centrifugal pump, centrifugal pump and its use. Present invention relates specifically to the new design of closed impeller (40) for a centrifugal pump.EFFECT: centrifugal pump incorporating the impeller of the present invention is suitable for pumping both pure liquids and liquids containing a solid phase, such as fibrous suspensions of pulp and paper pulp, or in the production of wood-based panels.11 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 688 066 C2 (51) МПК F04D 7/04 (2006.01) F04D 29/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 7/045 (2018.08); F04D 29/2216 (2018.08) (21)(22) Заявка: 2015112285, 03.04.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: 17.05.2019 (73) Патентообладатель(и): ЗУЛЬЦЕР МЭНЭДЖМЕНТ АГ (CH) (56) Список документов, цитированных в отчете о поиске: US 20090226317 A1, 10.09.2009. 23.04.2014 EP 14165689.2 (43) Дата публикации заявки: 20.10.2016 Бюл. № 29 (45) Опубликовано: 17.05.2019 Бюл. № 14 R U (54) РАБОЧЕЕ КОЛЕСО ДЛЯ ЦЕНТРОБЕЖНОГО НАСОСА, ЦЕНТРОБЕЖНЫЙ НАСОС, А ТАКЖЕ ЕГО ИСПОЛЬЗОВАНИЕ (57) Реферат: Настоящее изобретение относится к рабочему настоящему изобретению, пригоден для колесу (40) для центробежного насоса, перекачивания как чистых жидкостей, так и центробежному насосу и его применению. жидкостей, содержащих твердую фазу, таких как Настоящее изобретение в особенности относится волокнистые суспензии пульпы и бумажной к новой конструкции закрытого рабочего колеса массы, либо при производстве древесных плит. 4 (40) для центробежного насоса. Центробежный н. и 7 з.п. ф-лы, 7 ил. насос, в котором применяется рабочее колесо по Стр.: 1 C 2 C 2 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр. 3, ООО "Юридическая фирма Городисский и Партнеры" Лопастные насаосы. Под редакцией Зимницкого В. А. М.: Издательство "Машиностроение", 1986, глава 2, с.46- ...

Reactive impeller of centrifugal pump

FIELD: machine building. SUBSTANCE: invention relates to the field of pump building. Reactive centrifugal pump impeller comprises blades evenly distributed along the circumference (1) with identical skeletons (2) profiles. Middle line (3) of the inter-blade channels (4) are the geometric place of points - centers of the circles with diameters Di (i = 1n…), inscribed between the skeletons (2) of the adjacent profiles on different radii of the wheels. External contours of the inter-blade channels (4) are formed by the curves (5) and (6), tangent to the circle with diameter d i <Di, concentric circles inscribed between the skeleton (2). The diameters d i any radius of i-th wheel are determined by the dependance d i = (D1-s)⋅k+(⋅Di-s)(1-k), where D1 - The diameter Di of the circle ( 7 ) in the throat of the channel, when i = 1; s - thickness profile blade inlet edge and the constant k is identical for all channels and the wheel can have values ranging from 0.3 to 0.5. EFFECT: invention reduces eddy (diffuser) losses in the inter-blade channels of the impeller with a simultaneous increase in its hydraulic efficiency. 2 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 613 545 C1 (51) МПК F04D 29/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015151677, 02.12.2015 (24) Дата начала отсчета срока действия патента: 02.12.2015 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 02.12.2015 (45) Опубликовано: 17.03.2017 Бюл. № 8 C 1 2 6 1 3 5 4 5 МАЛЮШЕНКО В.В. Лопастные насосы. Теория, расчет и конструирование. Москва, Машиностроение, 1977, с.30, 32, рис.16;SU 1627755 A1, 15.02.1991;JPS 58187600 A, 01.11.1983. CN 102251983 A, 23.11.2011. US 4165950 A, 28.08.1979. (54) Реактивное рабочее колесо центробежного насоса (57) Формула изобретения 1. Реактивное рабочее колесо центробежного насоса, содержащее равномерно распределенные по окружности колеса лопасти с идентичными скелетами ...

Centrifugal pump runner

FIELD: engines and pumps. SUBSTANCE: invention refers to the pump engineering and may be used during construction of submerged pumps for the lifting of liquids with mechanical impurities from wells. The centrifugal pump runner contains a cover and an impeller with curvilinear blades (1, 2, 3, 4) installed with the formation of alternating flow-through interblade channels (13, 14) and non-flow-through interblade channels (15, 16). In each of the non-flow-through interblade channels (15, 16), two baffles are secured, (5, 6) and (7, 8), of which (5, 7) are internal, and (6, 8) are external, i.e. located on the different distances relatively to the center of the impeller hub. The internal baffle (5) is performed solid and connected to the pair of neighbor baffles (2, 3) by its edges; the internal baffle (7) is performed solid and connected to the pair of neighbor baffles (1, 4) by its edges. The external baffle (6) is connected to one blade (2) of the neighbor ones (2, 3) forming the peripheral hole (17) with another blade (3) on one side on the non-flow-through interblade channel (15). The external baffle (8) is connected to one blade (4) of the neighbor ones (1, 4) forming the peripheral hole (18) with another blade (1) on one side on the non-flow-through interblade channel (16). EFFECT: invention is directed to prevention of rapid wear, unbalancing, and blocking of the runner with mechanical impurities, reduction and stabilization of power supply by a drive motor within the limits of its available capacity, and provision of the possibility for successful operation of marginal petroleum and other wells. 6 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 610 802 C1 (51) МПК F04D 29/22 (2006.01) F04D 7/04 (2006.01) F04D 13/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2015155853, 25.12.2015 (24) Дата начала отсчета срока действия патента: 25.12.2015 (72) Автор(ы): Языков ...

A kind of centrifugal hydraulic turbine impeller and method for designing thereof

本发明公开了一种离心式液力透平叶轮，包括透平前盖板、后盖板和叶片，叶片位于前盖板和后盖板之间，叶片呈弧形，叶片包括叶片根部区域、叶片弧形区域和叶片端部区域，叶片设置在前盖板和后盖板之间，且叶片根部区域在后盖板上呈顺时针放置，叶片端部区域在后盖板上呈逆时针放置；它还公开了液力透平专用叶轮的设计方法，计算出最佳的叶片进口安放角β b1 和叶片出口安放角β b2 。本发明的有益效果是：提高透平效率、拓宽高效区运行范围和增加运行平稳性。

Multi-flow turbomachine

Eine Strömungsmaschine (10) hat ein Laufrad (40), welches Laufrad (40) zur Drehung um eine Drehachse (12) ausgebildet ist und eine erste axiale Seite (41) und eine von der ersten axialen Seite (41) abgewandte zweite axiale Seite (42) aufweist, welches Laufrad (40) an der ersten axialen Seite (41) einen ersten Fluideinlass (51) und an der zweiten axialen Seite (42) einen zweiten Fluideinlass (52) aufweist, welches Laufrad einen ersten Fluidauslass (61) und einen zweiten Fluidauslass (62) aufweist, wobei der erste Fluidauslass (61) näher an der zweiten axialen Seite (42) ausgebildet ist als der zweite Fluidauslass (62), welches Laufrad (40) im Inneren einen ersten Kanal (53) und einen zweiten Kanal (54) aufweist, wobei der erste Fluideinlass (51) über den ersten Kanal (53) mit dem ersten Fluidauslass (61) in Fluidverbindung steht, wobei der zweite Fluideinlass (52) über den zweiten Kanal (54) mit dem zweiten Fluidauslass (62) in Fluidverbindung steht, welches Laufrad (40) mindestens eine erste Schaufel (63) und mindestens eine zweite Schaufel (64) aufweist, welche mindestens eine erste Schaufel (63) im ersten Kanal (53) angeordnet ist, welche mindestens eine zweite Schaufel (64) im zweiten Kanal (54) angeordnet ist, um bei einer Drehung des Laufrads (40) ein erstes Fluid (13) vom ersten Fluideinlass (51) zum ersten Fluidauslass (61) zu fördern und ein zweites Fluid (14) vom zweiten Fluideinlass (52) zum zweiten Fluidauslass (62) zu fördern.

Pump

A rotary centrifugal pump having an axial inlet and discharge in a casing together with an impeller having liquid impelling vanes on both surfaces thereof with the impeller having central openings enabling inlet liquid to be impelled by vanes on both surfaces of the impeller. The pump includes a pressured water cooled bearing and a seal in which grease or other lubricant is maintained under pressure by the liquid being pumped. The pump is adapted for use as a single stage or multiple stage and is capable of producing relatively high pressures and high volume discharge.

Drain pump

공조기에 장비되어 방출수를 배수하는 펌프에 있어서, 양정(揚程: lift )을 확보하면서 잡음의 저감을 도모한다. In a pump equipped with an air conditioner to drain discharged water, noise is reduced while securing a lift. 배수 펌프의 펌프 본체(30)는 하방에 돌출하는 흡입구(42)와, 측방으로 돌출하는 토출구(46)를 가진다. 펌프 본체(30) 내의 회전 날개(moving blade)(50)는 모터에 의해서 회전된다. 회전 날개(50)는 대경(大徑) 날개(450)의 외주부를 원통상 벽부재(470)로 둘러싸는 구조를 가진다. 원통상 벽부재(470)의 높이에 대해서 대경 날개(450)의 상부 가장자리부(453)까지의 높이를 일정한 범위로 설정함으로써 소음을 저감할 수 있다. The pump main body 30 of the drain pump has a suction port 42 projecting downward and a discharge port 46 projecting laterally. The moving blade 50 in the pump body 30 is rotated by a motor. The rotary blade 50 has the structure which encloses the outer peripheral part of the large diameter blade 450 by the cylindrical wall member 470. The noise can be reduced by setting the height of the cylindrical wall member 470 to the upper edge portion 453 of the large-diameter blade 450 in a predetermined range.

Rotary pump impeller

Изобретение относится к области насосостроения и может быть использовано в промышленности, сельском хозяйстве и для бытовых нужд. Рабочее колесо центробежного насоса характеризуется тем, что величина угла между касательной к выходной кромке лопатки и касательной к окружности рабочего колеса находится в диапазоне от 40 до 90°, а форма лопаток описывается поверхностями второго порядка. Изобретение направлено на повышение создаваемого напора при сохранении кпд рабочего колеса центробежного насоса. 8 з.п. ф-лы, 8 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 661 801 C1 (51) МПК F04D 29/24 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 29/242 (2018.02) (21)(22) Заявка: 2017124511, 10.07.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 10.07.2017 (56) Список документов, цитированных в отчете о поиске: CN 204152837 U, 11.02.2015. RU (45) Опубликовано: 19.07.2018 Бюл. № 20 (54) РАБОЧЕЕ КОЛЕСО ЦЕНТРОБЕЖНОГО НАСОСА (57) Реферат: Изобретение относится к области находится в диапазоне от 40 до 90°, а форма насосостроения и может быть использовано в лопаток описывается поверхностями второго промышленности, сельском хозяйстве и для порядка. Изобретение направлено на повышение бытовых нужд. Рабочее колесо центробежного создаваемого напора при сохранении кпд насоса характеризуется тем, что величина угла рабочего колеса центробежного насоса. 8 з.п. фмежду касательной к выходной кромке лопатки лы, 8 ил. и касательной к окружности рабочего колеса R U 2 6 6 1 8 0 1 2161737 C1, 10.01.2001. RU 2126102 C1, 10.02.1999. SU 1435847 A1, 07.11.1988. WO 9936701 A1, 22.07.1999. EP 3088738 A1, 02.11.2016. Стр.: 1 C 1 C 1 Адрес для переписки: 620100, г. Екатеринбург, а/я 963, ООО "Царская привилегия", Левкину А.Ю. 2 6 6 1 8 0 1 (73) Патентообладатель(и): Общество с ограниченной ответственностью Научно-производственная фирма "АДЕС" (RU) 19.07.2018 R U 10.07.2017 (72) Автор(ы ...

Multistage centrifugal turbo-machine

FIELD: machine building. SUBSTANCE: multistage centrifugal turbo-machine containing a rotor assembly comprising a shaft on which there is the first impeller and the second impeller, a stator, comprising a pass for fluid medium, herewith the said pass comprises a diffuser arranged downward the flow behind the outlet side of the first impeller, a distributor located upward the flow before the inlet side of the second impeller, and a return channel connecting the diffuser and the distributor. In the distributor there are stator blades, and part of the distributor is limited by the first impeller while the said stator blades are arranged, at least partially, in the said part of the distributor. EFFECT: invention is aimed at increase of compressor efficiency factor. 8 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F04D 1/06 (13) 2 600 482 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013158435/06, 19.07.2012 (24) Дата начала отсчета срока действия патента: 19.07.2012 (72) Автор(ы): ЮРИШИ Джузеппе (IT), ГРИМАЛЬДИ Анджело (IT) (73) Патентообладатель(и): Нуово Пиньоне С.п.А. (IT) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.08.2015 Бюл. № 24 R U 21.07.2011 IT CO2011A000027 (45) Опубликовано: 20.10.2016 Бюл. № 29 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.02.2014 (86) Заявка PCT: 2 6 0 0 4 8 2 (56) Список документов, цитированных в отчете о поиске: US 0001281478 A1, 15.10.1918. US 0002543923 A1, 06.03.1951. SU 754115 A1, 07.08.1980. RU 2140578 C1, 27.10.1999. (87) Публикация заявки PCT: WO 2013/011105 (24.01.2013) R U 2 6 0 0 4 8 2 Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ" (54) МНОГОСТУПЕНЧАТАЯ ЦЕНТРОБЕЖНАЯ ТУРБОМАШИНА (57) Реферат: Предложена многоступенчатая центробежная рабочего колеса, и поворотный канал, турбомашина, содержащая роторный узел, соединяющий диффузор и направляющий содержащий вал, на котором расположено ...

Multi-layer circulation pump

The multistage centrifugal pump has several wheels (36) in each pump stage (34) on common shaft (40). An impeller (6) and a diffuser (38) are arranged on each wheel. The liquid to be conveyed in the axial direction parallel to the rotational axis is made to enter into the impeller of first self-priming stage. The liquid from impeller of first self-priming stage is supplied to impeller of next stage in the axial direction.

Patent RU2015112285A3

`7ВУ’” 2015112285” АЗ Дата публикации: 29.10.2018 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж 5 «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2015112285/06(019247) 03.04.2015 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 14165689.2 23.04.2014 ЕР* Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) РАБОЧЕЕ КОЛЕСО ДЛЯ ЦЕНТРОБЕЖНОГО НАСОСА, ЦЕНТРОБЕЖНЫЙ НАСОС, А ТАКЖЕ ЕГО ИСПОЛЬЗОВАНИЕ Заявитель: ЗУЛЬЦЕР МЭНЭДЖМЕНТ АГ, СН 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) ЕО4О 7/04 (2006.01) ЕО4рО 29/22 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) во4р 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): СТРО, РЕРАТБ пес, РУУРТ, ЕАРАТКУ, Езрасепев, 7-Р1а Рас, КТРК5, РАТЕМТСОРЕ, Ра еагсЬ, ВКОРТО, ТРО, ИЗРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория ...

CENTRIFUGAL PUMP WITH DOUBLE RELEASE

1. Насос (10), характеризующийся тем, что содержит импеллер (20) и корпус (50), охватывающий импеллер, у которого имеется главный канал (24), разделенный на первый канал (241) и второй канал (242) с общим впускным участком (22), ориентированным параллельно оси (А) вращения насоса и соответствующим входу в главный канал (24), причем первый канал (241) имеет радиально ориентированный первый выход (243), расположенный относительно оси (А) вращения на первом диаметре и обеспечивающий выпуск текучей среды под первым давлением, а второй канал (242) имеет радиально ориентированный второй выход (244), расположенный позади первого выхода (243) на втором диаметре, превышающем первый диаметр, и обеспечивающий выпуск текучей среды под вторым давлением, превышающим первое давление, при этом импеллер (20) и корпус (50) совместно формируют систему осевой балансировки, содержащую камеру (90), образованную между задней стороной (27) импеллера и обращенной к ней частью (57) корпуса, причем вход в камеру (90) расположен на уровне второго выхода (244).2. Насос (10) по п.1, отличающийся тем, что первый канал (241) и второй канал (242) разделены перегородкой (40), по меньшей мере участок которой расположен между первым выходом (243) и вторым выходом (244).3. Насос (10) по п.2, отличающийся тем, что перегородка (40) заходит в главный канал (24) в направлении впускного участка (22).4. Насос (10) по п.2 или 3, отличающийся тем, что наружный отрезок (48) перегородки (40), расположенный между первым выходом (243) и вторым выходом (244), снабжен динамическим уплотнением, установленным в зазоре между перегородкой и промежуточной стенкой (58) корпуса (50).5. Насос (10) по п.1, отличающийся тем, что в зазоре между передней стенкой гл� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F04D 29/041 (13) 2011 146 920 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011146920/02, 07.05.2010 (71) Заявитель(и): СНЕКМА (FR) Приоритет(ы): (30) ...

Centrifugal pump

FIELD: food industry. SUBSTANCE: side circular outlet is displaced to rear disk side relative to impeller. Outer section of outlet passage area is made in form of threshold member mated with conical surface at side of front disk. Surface of outlet at side of rear disk is made conical. Both conical surfaces are arranged square to impeller outlet edge bevelled towards rear disk side. EFFECT: increased efficiency of centrifugal pump. 1 dwg

Impeller for centrifugal pump

Efficient energy-saving slurry pump impeller

本发明提供一种高效节能矿浆泵叶轮，其特征在于：叶轮轮盘上圆周均布有6片叶轮叶片，叶轮流道口宽度为：（540/叶轮直径）×74mm。叶轮叶片材质为2cr13NiMo。本发明将传统的矿浆泵叶轮的叶片由8片改为6片，选择了合适的叶轮流道口宽度，从而提高了叶轮效率，达到耗电降低及节能的作用，采用了新材质叶片，使矿浆泵的使用范围扩大，使用寿命提高。

Centrifugal pump impeller with improved positive suction bead

FIELD: pumps building. SUBSTANCE: centrifugal pump impeller comprises main disc, cover disc and vanes arranged there between. Each blade is made in the form of a bent convex surface with the beginning of construction on a segment from the diameter of the main disc to the diameter of the covering disc with turning through angle of 140–360°. Turning starts at an angle β1 between blade edge and tangent to outer circumference of main disc and ends at an angle β2 between another edge of blade and tangent to outer circle, with offset along axis by value L. Values α – inclination angle of blade leading edge, should lie in range from 30 to 90°. EFFECT: invention is aimed at reduction of acoustic noise and hydrodynamic vibrations of pump rotor, improvement of reliability and reduction of impeller positive suction bead. 1 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 733 500 C1 (51) МПК F04D 29/22 (2006.01) F04D 29/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 29/2216 (2020.05); F04D 29/2272 (2020.05); F04D 29/669 (2020.05) (21)(22) Заявка: 2020108618, 28.02.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью «Лизинговая Компания «ЛИАКОН» (RU) 02.10.2020 (45) Опубликовано: 02.10.2020 Бюл. № 28 2 7 3 3 5 0 0 R U (54) РАБОЧЕЕ КОЛЕСО ЦЕНТРОБЕЖНОГО НАСОСА С УЛУЧШЕННЫМ КАВИТАЦИОННЫМ ЗАПАСОМ (57) Реферат: Изобретение относится к области окружности основного диска и заканчивается под насосостроения. Рабочее колесо центробежного углом β2 между другой кромкой лопатки и насоса содержит основной диск, покрывной диск касательной к внешней окружности, со и расположенные между ними лопатки. Каждая смещением вдоль оси на величину L. Значения α лопатка выполнена в виде изогнутой выпуклой – угла наклона входной кромки лопасти, должны поверхности с началом построения на отрезке от лежать в диапазоне от 30 до 90°. Изобретение диаметра ...

Optimization design method of impellor for cavitation-erosion-resistant centrifugal fan

本发明一种抗空蚀离心泵叶轮优化设计方法，获得原始叶轮的周向XY平面上的前盖板二维翼型骨线、中间二维翼型骨线以及后盖板二维翼型骨线，并参数化后，构建叶轮优化参数，构建变化后的骨线，再将其三维化得到的变化后的前盖板三维翼型型线、中间三维翼型型线以及后盖板三维翼型型线，输入到几何造型软件中，形成变化后的叶轮三维形状，在单流道网格划分的基础上进行水利性能测算，以多目标遗传算法NSGA-II遗传算法为优化工具，对离心泵叶轮参数进行多目标优化设计，选取水利性能最佳的一组叶轮参数作为优化后的叶轮参数；本发明方法优化参数构建科学，优化过程自动化程度高，优化后离心泵叶轮叶片效率，空化空蚀性能优良。

Stage of multistage vane pump

FIELD: pumps engineering. SUBSTANCE: invention relates to the field of pump engineering and can be used mainly in multistage electric submersible vane pumps for oil production and facilities for maintaining reservoir pressure of oil deposits. Multistage vane pump stage comprises impeller and guide vane. Flow channels on the periphery of the step elements, at the outlet of the liquid flow from the impeller and at the inlet of the guiding device, are made with rounding of the oval shape in the axial projection. Oval sections smoothly mate with inner sections of flow channels, which are perpendicular to pump rotation axis. Ratio of radius of peripheral rounding of flow channels in axial projection to their width at outlet of impeller and inlet of guide vanes is subject to certain ratio. EFFECT: invention is aimed at increasing specific head of pump stage due to reduction of its axial size (height), without significant growth of its hydraulic resistance, and therefore, significant reduction of its energy efficiency. 3 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 735 978 C1 (51) МПК F04D 1/06 (2006.01) F04D 13/10 (2006.01) F04D 29/22 (2006.01) F04D 29/44 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 1/06 (2020.08); F04D 13/10 (2020.08); F04D 29/2216 (2020.08); F04D 29/445 (2020.08) (21)(22) Заявка: 2020120927, 24.06.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 24.06.2020 (45) Опубликовано: 11.11.2020 Бюл. № 32 2 7 3 5 9 7 8 R U (54) Ступень многоступенчатого лопастного насоса (57) Реферат: Изобретение относится к области насосостроения и может преимущественно использоваться в многоступенчатых электропогружных лопастных насосах для добычи нефти и установках поддержания пластового давления нефтяных месторождений. Ступень многоступенчатого лопастного насоса содержит рабочее колесо и направляющий аппарат. Проточные каналы на периферии ...

Fluid pump

一种液压泵，在外壳(1)的内部设置有连通吸入口与排出口的流体室(4)，在该流体室(4)内配置有以能够旋转的方式由旋转轴(5)支承的叶轮(6)，叶轮(6)具有以能够沿流体室(4)的背面壁旋转的方式由旋转轴(5)支承的支承板(10)、和竖立设置在与该支承板(10)的背面壁相对向的面的相反侧面上，且在支承板(10)径向延伸的多个叶片部(11)，支承板(10)至少在各叶轮部(11)的旋转方向的前方侧形成有切口部(12)，所述切口部(12)从支承板(10)的径向外缘部切入径向内侧，该径向内侧端部(12a)位于比叶片部(11)的径向内侧端部(11a)还靠向径向外侧的位置。从而，提供性能降低少的小型液压泵。

Drain pump

一种排水泵，其所使用的旋转叶片(70)具有：多个板状的大径叶片(60)，其从与电动机的输出轴连接的轴部(52)向放射方向延伸；多个板状的小径叶片(54)，其与大径叶片(60)的下端缘部连接；以及设在相邻的大径叶片间的辅助叶片(68)。在大径叶片及辅助叶片的外周设有将叶片所搅动的水流向叶片的外侧导向的阶梯部(72、74、82及84)。利用这些阶梯部，可抑制排泄水流入叶片后方的空间，因此，虽然提高排出能力但也能抑制振动、噪音。通过发明的排水泵，能够兼顾排出能力的提高和运转时的静音性。

One vane impeller for easy balancing adjustment by dummy vane and pump with the same

본 발명은 원심력에 의해 유체를 흡입하여 토출하는 임펠러 및 이를 구비한 펌프에 관한 것이다. 본 발명의 실시예에 따른 더미베인에 의해 밸런싱 조절이 용이한 원베인 임펠러는 구동축에 결합되는 축결합부가 중앙에 형성되는 축결합판부, 상기 축결합판부에서 이격되며 중앙에 유체가 흡입되는 흡입부가 형성된 흡입판부, 상기 축결합판부와 상기 흡입판부의 사이에 배치되며 상기 흡입부에서 외측둘레로 갈수록 반경이 넓어지는 곡면을 갖는 베인부를 포함하고, 상기 베인부는 상기 흡입구의 둘레에 일단이 위치되며 타단으로 갈수록 반경이 넓어져 상기 축결합판부 또는 상기 흡입판부의 외측둘레에 타단이 위치하는 외측베인부, 상기 외측베인부의 내측에 위치하여 상기 외측베인부의 일단과 동일하게 위치하며 타단으로 갈수록 상기 외측베인부보다는 작은 반경으로 넓어져 상기 외측베인부의 중간부분에 타단이 연결되는 내측베인부, 및 상기 베인부의 무게를 감소시켜 밸런싱의 조절이 용이하도록 상기 내측베인부와 상기 외측베인부에 내부가 빈 중공부를 포함한다. 따라서, 임펠러의 밸런싱을 용이하게 조절하여 펌프의 효율을 향상시킬 수 있다.

A kind of two stage blade pressurizing propeller

本发明公开一种双级叶片加压叶轮，包括一级叶片、二级叶片和叶轮盘，叶轮盘为圆形盘，叶轮盘侧面凸起设置有以叶轮盘轴线为中心均匀分布的一级叶片，叶轮盘圆周一圈均匀设置有二级叶片，所述双级叶片加压叶轮表面涂覆有疏水涂层；一级叶片对水体施加力量，带动水体以一个初速度旋转后，处于叶轮边缘的二级叶片以较大的线速度将具有一定初速度的水体向外侧排出，进一步提高离开水泵壳体内的水流的速度，提高了出水压力，提高离心泵效率。

Impeller including cylinder type vanes

본 발명은 베이스판의 중심으로부터 일방향으로 나선형을 그리며 형성되는 중공의 베인(vane)이 다수 형성되어 중공의 하우징 내부로 유입되는 유체가 임펠러의 회전에 의해 입수구로 유입되고, 유입된 유체는 베이스판의 중심부에서 형성되는 다수의 베인의 유입구로 유입되어 유출구로 배출됨으로써 유체와의 마찰을 최소화함과 동시에 펌프의 양정 및 효율을 극대화할 수 있는 원통형 베인을 포함하는 임펠러를 제공한다. 또한, 본 발명은 다수의 베인 중 어느 하나의 베인의 외주면과 어느 하나의 베인에 인접한 다른 하나의 베인의 외주면이 이격됨에 따라 유입구 이외로 흐르게 되는 유체와의 마찰 손실을 최소화하고 베이스판, 베인 및 유입구는 일체로 형성되어 구조적인 안정감을 줄 수 있는 원통형 베인을 포함하는 임펠러를 제공한다. According to the present invention, a plurality of hollow vanes are formed spirally in one direction from the center of the base plate, and the fluid flowing into the hollow housing is introduced into the inlet by the rotation of the impeller. The inlet of the plurality of vanes formed in the center of the inlet is discharged to the outlet to minimize the friction with the fluid and at the same time provide an impeller including a cylindrical vane that can maximize the pump lift and efficiency. In addition, the present invention minimizes the friction loss between the fluid flowing outside the inlet as the outer peripheral surface of any one of the plurality of vanes and the outer peripheral surface of the other vanes adjacent to one of the vanes and the base plate, vanes and The inlet provides an impeller comprising a cylindrical vane that is integrally formed to give structural stability.

Centrifugal pump runner

FIELD: engines and pumps. SUBSTANCE: invention refers to machine engineering. The pump contains a heterogenic blading; the blades (1-6) form the channels (7) between each other. At least two blades (1-3) have different framework profiles. All blades (1-6) have a wedge-shaped form. External channel (7) bypasses, which at the same time delineate blade profiles, are performed by curves (8, 9) tangential to circumferences with the diameters D i inserted between the frameworks (10) at different radiuses of the runner. Whereupon, the diameters at any radius of the runner are defined via the certain formulation and depend on values of the circumference diameter (11) in the channel throat (7), the thickness of an input blade profile edge (1-6), and the constant with a value more than 1/4 and less than 1. EFFECT: invention of the runner is directed to the increasing of the performance factor and extension of effective operation area of a centrifugal pump. 4 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 611 122 C1 (51) МПК F04D 29/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2016109434, 16.03.2016 (24) Дата начала отсчета срока действия патента: 16.03.2016 Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 16.03.2016 (45) Опубликовано: 21.02.2017 Бюл. № 6 (56) Список документов, цитированных в отчете о поиске: RU 2452875 C2, 10.06.2012. RU 2116518 C1, 27.07.1998. FR 2908942 A1, 23.05.2008. DE 102011054551 A1, 26.04.2012. 2 6 1 1 1 2 2 Адрес для переписки: 111250, Москва, ул. Красноказарменная, 14, ФГБОУ ВО "НИУ "МЭИ", НИЧ, зав. Центром патентования, защиты и оценки интеллектуальной собственности, Лобзовой Т.А. (73) Патентообладатель(и): Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВПО "НИУ "МЭИ") (RU) R U 21.02.2017 (72) Автор(ы): Парыгин Александр Гаврилович ...

Centrifugal pump, and use thereof

离心泵包括：具有轴向入口的螺旋形泵壳和相切地连接到泵壳的圆周壁的喷管形出口。转子连接到泵壳能绕轴向轴旋转。转子包括：中心轮毂；固定至轮毂的轴罩；连接成与轴罩轴向间隔的吸入罩，其具有与泵壳的轴向入口对准的轴向供给口；多个固定在两罩之间且每一个在径向外端和径向内端之间横向于旋转中心线延伸的转子叶片。转子具有最大外径D W ，罩限定转子宽度B W 。转子的轴向供给口具有吸入直径D Z ，转子叶片限定相当于可被导入到两个相邻的转子叶片之间的最大球形直径的球形直径Bol。球形直径Bol与吸入直径D Z 之间比值大于0.43。转子宽度B W 与吸入直径D Z 之间比值大于0.43。转子外径D W 与吸入直径D Z 之间比值在2.3和2.5之间。这些值提供具有特殊水力设计的离心泵。

Impeller of centrifugal pump

本发明涉及一种离心泵的叶轮，包括旋转轮盘和叶片，旋转轮盘中心处设置有转动轴，转动轴外侧设置有进水口，相邻的两组叶片围成出水口，叶片由一级叶片、二级叶片、三级叶片和四级叶片构成，二级叶片设置在相邻的两组一级叶片的中部，三级叶片设置在一级叶片和二级叶片的中部，四级叶片设置在三级叶片与二级叶片的中部以及三级叶片和一级叶片的中部；每组叶片由若干个断开的隔板构成，且每个叶片相邻的两个隔板之间构成水流通道，水流通道分别与其两侧叶片的隔板对应。本发明排水量高，正反转排水量不变，解决现有离心泵间断排水，排水量小，反转排水效率大大降低等技术问题，对现有技术来说，具有很好的市场前景和发展空间。

Spurt pump having blades with slope

본 발명은 경사면이 형성된 날개를 구비한 스프르트 펌프에 관한 것으로서, 보다 상세하게는, 임펠러 날개의 내측단부에 경사면을 형성함으로써 비닐 등의 슬러지가 날개에 걸리는 것을 방지하여 유체의 흡입 및 배출 효율을 향상시킬 수 있는 경사면이 형성된 날개를 구비한 스프르트 펌프에 관한 것이다. The present invention relates to a sputter pump having a blade with an inclined surface, and more specifically, by forming an inclined surface at the inner end of the impeller blade, preventing sludge of vinyl or the like from being caught on the blade, thereby improving the suction and discharge efficiency of the fluid. It relates to a spurt pump having a blade formed with an inclined surface that can be improved.

Vertical multi-stage impeller of pump Hydraulic Design Method based on interstage matched effect

本发明公开了基于级间匹配效应的立式多级泵叶轮水力设计方法，在考虑多级泵级间匹配效应的基础上，结合外特性试验和CFD技术，采用优化算法并计算加权平均功率的最大值或加权平均效率最小值的方法来最终获得多级泵叶轮进出口直径和叶轮出口宽度的最佳值。本发明提出的一种基于级间匹配效应的立式多级泵叶轮水力设计方法，较以经验为主的设计方法而言，经验因素偏少且理论基础支撑更可靠，为多级泵叶轮的水力设计的提供了一种全新的思路和方法，在一定程度上还可以节约成本。

Method for centrifugal pump flow part elements shape optimization

FIELD: machine building. SUBSTANCE: invention relates to machine building and can be used in design of new, as well as in finalizing the design of commercially available centrifugal pumps. Method of centrifugal pump flow part shape optimization consists in determination of functional extremum, for which connection with main geometric parameters of centrifugal pump flow part elements is established, and is implemented in stages. At the first stage, centrifugal pump optimization conditions are analysed, its high-speed and rated delivery is determined, at the second stage, profiling is performed, in which elements of flow part of centrifugal pump, represented in the form of set of current lines, are shaped according to the law of velocity distribution along current lines, and at the third step, additional selection criteria are introduced, comparative experimental or estimated evaluation of solutions having the same functional values is made, and the best is selected from them. EFFECT: invention is aimed at improvement of energy efficiency and improvement of cavitation characteristics of centrifugal pump at provision of required head at preset feed. 1 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 716 523 C1 (51) МПК F04D 29/22 (2006.01) F04D 29/42 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 29/2216 (2019.08); F04D 29/426 (2019.08) (21)(22) Заявка: 2019105807, 27.02.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Вихлянцев Александр Андреевич (RU) Дата регистрации: 12.03.2020 (45) Опубликовано: 12.03.2020 Бюл. № 8 2 7 1 6 5 2 3 R U (54) Способ оптимизации формы элементов проточной части центробежного насоса (57) Реферат: Изобретение относится к области котором элементам проточной части машиностроения и может быть использовано при центробежного насоса, представляемым в виде создании новых, а также при доработке совокупности линий тока, придают форму по конструкции ...

Micro flow pump

Single-stage external member of partial flow pump and multistage partial flow pump thereof

本发明属于叶片泵领域，解决了切线泵径向尺寸大不能多级化问题。本泵的单级套件包括泵体、叶轮、集流壳，其特征在于：在泵体内设置一个或多个轴向流体出口及其弧形扩散室，两者相互连通。及用单级套件组装成多级部分流泵或深井泵。有结构紧凑、高速、耐泥砂等特点。是部分流泵第二个新泵种，可称为弧线泵。目前深井泵转速可达万转每分，综合性能超越传统产品，又可带动配套电机向高速、大功率方面发展。将成为叶片泵发展的主要对象。主要用于需高压的化工行业和深井抽吸、喷灌等方面。

DEVICE AND METHOD FOR INCREASING FLOW EFFICIENCY IN PUMPING SYSTEMS

1. Устройство, содержащее: ! центробежный насос, включающий в себя ! множество рабочих колес; и ! множество диффузоров, причем каждым диффузором является радиальный диффузор с множеством лопаток диффузора, содержащих задние кромки, сгибающиеся под углом, по меньшей мере, 30° в соответствующие выпускные каналы диффузоров. ! 2. Устройство по п.1, в котором задние кромки сгибаются под углом приблизительно 90° в соответствующие выпускные каналы диффузоров. ! 3. Устройство по п.1, в котором каждое рабочее колесо содержит множество лопаток рабочего колеса, сгибающихся под углом, по меньшей мере, 30° в соответствующие впускные каналы рабочего колеса. ! 4. Устройство по п.3, в котором лопатки рабочего колеса сгибаются под углом приблизительно 90° в соответствующие впускные каналы рабочего колеса. ! 5. Способ уменьшения разделения текучей среды в центробежном насосе, в котором осуществляют: ! формование множества радиальных диффузоров, причем каждый диффузор содержит лопатки с задними кромками, каждая из которых сгибается под углом, по меньшей мере, 30° в соответствующие выпускные каналы диффузора; и ! соединение множества диффузоров с множеством рабочих колес в центробежный насос. ! 6. Способ по п.5, в котором формование включает в себя формование каждого диффузора с задними кромками, сгибающимися под углом, по меньшей мере, 60° в соответствующие выпускные каналы диффузора. ! 7. Способ по п.5, в котором формование включает в себя формование каждого диффузора с задними кромками, сгибающимися под углом приблизительно 90° в соответствующие выпускные каналы диффузора. ! 8. Способ по п.5, в котором осуществляют: ! формование каждого диффу (19) РОССИЙСКАЯ ФЕДЕРАЦИЯ RU (11) 2008 139 345 (13) A (51) МПК F04C 15/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21), (22) Заявка: 2008139345/06, 02.10.2008 (71) Заявитель(и): ШЛЮМБЕРГЕР ТЕКНОЛОДЖИ Б.В. (NL) (30) Конвенционный приоритет: 03.10.2007 US 11/866,966 (43 ...

Semi-open centrifugal pump impeller and design optimization method therefor

A design optimization method for a semi-open centrifugal pump impeller, comprising the following steps: the number of post-optimization long blades (2) being fewer than the number of pre-optimization long blades (11); disposing flow dividing medium blades (3) and flow dividing short blades (4) circumferentially at uneven distances between any two post-optimization long blades (2); the flow dividing medium blades (3) and flow dividing short blades (4) having the same outlet position, profile and thickness as those of the post-optimization long blades (2), and the flow dividing medium blades (3) and flow dividing short blades (4) having different inlet positions from those of the post-optimization long blades (2); sequentially arranging a post-optimization long blade (2), a flow dividing short blade (4), and a flow dividing medium blade (3) circumferentially in an impeller rotation direction. The problems for semi-open centrifugal pump impellers wherein efficiency is low, inlet loss is large, inlets are cavitated, a front cover leaks, a boundary layer between blade outlets is separated, lift at dead points is low, noise is loud, and so on may be solved by means of the described optimization method. Moreover, further comprised is a semi-open centrifugal pump impeller.

Low shear, low velocity differential, impeller having a progressively tapered hub volume with periods formed into a bottom surface

Disclosed herein is an impeller for mixing a fluid wherein the impeller is fashioned so as to substantially reduce areas of fluid acceleration and deceleration around a hub region of the impeller during fluid mixing. The impeller has a generally circularly shaped hub having a downwardly directed progressively tapered volume which has plurality of periods formed therein corresponding to the number of increasingly arced blades. Each of the increasingly arced blades flare outwards to a distal end region of the impeller and have an increasing radius to said arc towards a peripheral edge region of said hub. The flare to the increasingly arced blades defines a larger circumference than that of said hub, thereby imparting a generally frusto-concial shape to the impeller. A method mixing a fluid using the impeller disclosed herein is also disclosed.

CENTRIFUGAL ROLLER FOR TURBOMACHINE

Rouet centrifuge (18) présentant un axe de rotation (X) s'étendant d'avant en arrière, et comprenant un corps (20) s'étendant autour de l'axe de rotation (X), le corps (20) comprenant une partie avant et une partie arrière de plus grande section que la partie avant, le rouet comprenant en outre des pales (24, 25) faisant saillie d'une face avant (20a) du corps (20), le corps (20) présentant, sur sa face avant (20a) et entre deux pales consécutives (24, 25), un renfoncement (30) situé à distance, circonférentiellement, desdites deux pales (24, 25). Centrifugal wheel (18) having an axis of rotation (X) extending forwards and backwards, and comprising a body (20) extending around the axis of rotation (X), the body (20) comprising a a front portion and a rear portion of larger section than the front portion, the wheel further comprising blades (24, 25) projecting from a front face (20a) of the body (20), the body (20) having, on its front face (20a) and between two consecutive blades (24, 25), a recess (30) located at a distance, circumferentially, from said two blades (24, 25).

Patent FR2039477A5

LIQUID MUFFLER CENTRIFUGAL MOTOR PUMP.

Motopompe centrifuge silencieuse à liquide ayant dans sa pompe centrifuge (2), une platine de pompe (5) et un carter de pompe (6) définissant une chambre de pompe dans laquelle tourne une roue à tubes (7), caractérisée en ce que la chambre de pompe (12) est constituée de deux chambres concentriques à savoir une chambre de révolution centrale, ayant une section axiale en T, dite chambre à roue à aubes (13), dans laquelle tourne concentriquement la roue à aubes (7) et une chambre de refoulement (14) périphérique annulaire ayant une section axiale en L inversés à angle arrondi et à largeur sensiblement constante, prolongeant radialement puis axialement la chambre à roue à aubes (13) au niveau des bras du T de sa section axiale en T. Silent liquid centrifugal motor pump having in its centrifugal pump (2), a pump plate (5) and a pump casing (6) defining a pump chamber in which a tube wheel (7) rotates, characterized in that the pump chamber (12) consists of two concentric chambers, namely a central revolution chamber, having an axial T-section, called the paddle wheel chamber (13), in which the paddle wheel (7) rotates concentrically and a annular peripheral discharge chamber (14) having an inverted L-shaped axial section with a rounded angle and substantially constant width, extending radially then axially the paddle wheel chamber (13) at the level of the arms of the T of its axial T-section.

Series rotating cross flow machine

Vortex forward-extended double blade impeller sewage pump

本发明涉及一种无堵塞污水泵。发明提供了一种涡旋前伸式双叶片污水泵，该污水泵的特征在于：采用双叶片结构，其流道进口处中心轮毂较一般叶轮轮毂约小一半；叶轮为半开式，其叶片前、后盖板流线均向进口边方向前伸，后盖板流线比一般叶轮的进口向前延伸的角度约120°，而前盖板流线比一般叶轮的进口向前延伸约45°，叶片包角θ约360°。该泵采用涡旋前伸、双叶片式，使得叶轮流道加宽，提高了污水中长纤维、大颗粒等杂物的通过能力，该污水泵的整体运行效率高，通过性能和抗缠绕性能好，运行平稳。

RADIAL PUMP, FAN OR COMPRESSOR WHEEL

Рабочее колесо насоса, вентилятора или компрессора, включающее ведущий и ведомый диски и расположенные между ними основные, периферийные и внутренние лопасти, отличающееся тем, что каждая периферийная лопасть имеет форму поверхности в виде дуги окружности и сопряжена по линии наружного диаметра рабочего колеса с одной стороны с поверхностью основной лопасти, а с другой стороны - с поверхностью внутренней лопасти таким образом, что ширина радиального канала, образованного смежными лопастями (основной и внутренней), на выходе меньше ширины радиального канала на входе в обратно пропорциональной зависимости по отношению к изменению скорости потока. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 147 692 (13) A (51) МПК F04D 29/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2009147692/06, 23.12.2009 (71) Заявитель(и): Котлов Николай Игоревич (RU) Приоритет(ы): (22) Дата подачи заявки: 23.12.2009 (43) Дата публикации заявки: 27.06.2011 Бюл. № 18 (72) Автор(ы): Котлов Николай Игоревич (RU) A R U A 2 0 0 9 1 4 7 6 9 2 (57) Формула изобретения Рабочее колесо насоса, вентилятора или компрессора, включающее ведущий и ведомый диски и расположенные между ними основные, периферийные и внутренние лопасти, отличающееся тем, что каждая периферийная лопасть имеет форму поверхности в виде дуги окружности и сопряжена по линии наружного диаметра рабочего колеса с одной стороны с поверхностью основной лопасти, а с другой стороны - с поверхностью внутренней лопасти таким образом, что ширина радиального канала, образованного смежными лопастями (основной и внутренней), на выходе меньше ширины радиального канала на входе в обратно пропорциональной зависимости по отношению к изменению скорости потока. Ñòð.: 1 ru 2 0 0 9 1 4 7 6 9 2 (54) РАДИАЛЬНОЕ РАБОЧЕЕ КОЛЕСО НАСОСА, ВЕНТИЛЯТОРА ИЛИ КОМПРЕССОРА R U Адрес для переписки: 197373, Санкт-Петербург, ул. Планерная, 47, корп.4, кв.32, Н.И. Котлову

Centrifugal pump impeller capable of reducing flow rate

本发明公开了一种减小流量的离心泵叶轮，包括前盖、后盖和叶片，其特征在于：所述叶片上设置有减流板，所述减流板呈平板状结构，所述减流板由叶轮的边缘向内延伸至叶片的中段，所述减流板与叶轮边缘的接触点为临点，临点处叶轮的径向方向与减流板之间的夹角的角度等于叶轮的出口安装角的角度。本发明相比现有技术具有以下优点：一种减小流量的离心泵叶轮，包括前盖、后盖和叶片，其特征在于：所述叶片上设置有减流板，所述减流板呈平板状结构，所述减流板由叶轮的边缘向内延伸至叶片的中段，所述减流板与叶轮边缘的接触点为临点，临点处叶轮的径向方向与减流板之间的夹角的角度等于叶轮的出口安装角的角度。

Bladed centrifugal pump impeller - has forward-curved blades circularly contoured to form constant depth reducing width passages to periphery

The centrifugal pump with a central inlet has an impeller in a spiral housing. The impeller has a main disc (31) with a hub (32) secured on the pump shaft and a number of equi-spaced forward-curved blades (33) axially extending from at least one side of the disc. Each blade has constant axial thickness and a forward side part which faces the hub and a rearward side, to define a space (38) between adjacent blades extending from the hub region to the disc periphery. These blade sides have circular contours with different radii and centres so that the space (38) has constant depth but reducing width from hub to periphery.

CENTRIFUGAL ROLLER FOR TURBOMACHINE

Rouet centrifuge (18) présentant un axe de rotation (X) s'étendant d'avant en arrière, et comprenant un corps (20) s'étendant autour de l'axe de rotation (X), le corps (20) comprenant une partie avant et une partie arrière de plus grande section que la partie avant, le rouet comprenant en outre des pales (24, 25) faisant saillie d'une face avant (20a) du corps (20), le corps (20) présentant, sur sa face avant (20a) et entre deux pales consécutives (24, 25), un renfoncement (30) situé à distance, circonférentiellement, desdites deux pales (24, 25). Centrifugal wheel (18) having an axis of rotation (X) extending forwards and backwards, and comprising a body (20) extending around the axis of rotation (X), the body (20) comprising a a front portion and a rear portion of larger section than the front portion, the wheel further comprising blades (24, 25) projecting from a front face (20a) of the body (20), the body (20) having, on its front face (20a) and between two consecutive blades (24, 25), a recess (30) located at a distance, circumferentially, from said two blades (24, 25).

Quiet centrifugal motorpump for liquids

Motor pump having in its centrifugal pump (2), a pump plate (5) and a pump housing (6) defining a pump chamber in which a bladed wheel (7) turns, characterised in that the pump chamber (12) is composed of two concentric chambers, that is a central rotation chamber, having a T-shaped axial cross section, termed the bladed wheel chamber (13), in which the bladed wheel (7) turns concentrically, and a peripheral annular delivery chamber (14) having an axial cross section in the shape of an inverted L with rounded angle and essentially constant width extending the bladed wheel chamber (13) radially then axially at the level of the arms of the T of its T-shaped axial cross section. <IMAGE>

Centrifugal fluid machine

At a vaned diffuser or a volute casing of a centrifugal fluid machine, pressure pulsation and vibrating forces acting upon the diffuser or the volute casing are mitigated or cancelled so as to abate the noise from the centrifugal fluid machine. The fluid machine having an impeller 3 rotating about a rotating shaft 2 within a casing 1 and having a vaned diffuser 4 or volute 12 fixed to the casing 1 is constructed such that radius of the vane trailing edge of the impeller 3 and radius of the vane leading edge of the diffuser 4 or radius of the volute tongue is varied in the direction of axis of rotation and inclinations, on a meridional plane, of the vane trailing edge of the impeller 3 and the vane leading edge of the diffuser 4 or the volute tongue are set in the same orientation, thereby reduction in head and efficiency or occurrence of an axial thrust may be restrained to the extent possible to optimally abate the noise and pressure pulsation of the centrifugal fluid machine.

Centrifugal pump for vehicle windscreen washer - uses electric motor powered centrifugal pump with axial extension from rotor extending into inlet line to improve fluid induction

The centrifugal pump is electrically driven to circulate the washing fluid for an automotive windscreen washer or headlamp washer. The centrifugal rotor of the pump carries a tapered rod extending into the inlet pipe to improve induction of the washing liquid and to prevent noisy operation as the pump wears. The electric motor (12) is supplied through push-on terminals, and has its shaft (14) oriented vertically. The shaft couples to the centrifugal pump rotor (18). The rotor has a tapered, star section rod (26) attached to it and projecting into the fluid inlet tube (22). The fluting of this rod improves the induction of liq. from the reservoir into the pump chamber (16), and gives quieter operation.

Impeller for manhole pump

The present invention relates to an impeller connected to a shaft which is mounted on a manhole pump and transfers power of a motor to sucks a fluid while rotating to forcibly move the fluid to discharge the fluid. The impeller for a manhole pump comprises: an upper disk horizontally arranged on an upper portion and provided with a shaft hole formed at a center thereof, on which a shaft is mounted; a lower disk which is horizontally arranged on a lower portion to face the upper disk, has an inlet formed at a center thereof to allow a fluid to enter from a lower side thereof, and includes a disk unit which is an area directly below the upper disk and an extension unit disposed on the outside of the disk unit to have a larger diameter than the upper disk; a first and a second side wall arranged on the outside of the inlet to be connected between the upper disk and the lower disk, and separated from each other to be symmetrically formed on opposing positions; and a flow discharge path having a flow passage formed between the first and the second side wall, wherein the fluid flowing from the inlet flows in both directions to pass, and a first and a second outlet formed on both ends of the flow passage to discharge the fluid.

Multistage pump

本发明公开了一种多级泵，包括泵盖、流道、泵座、转子部装和安装在所述泵座内部的叶轮，所述流道为双流道，所述泵座上设有吸入口和吐出口，所述转子部装的两端分别安装有前轴承部装和后轴承部装，所述前轴承部装与所述泵座之间以及所述后轴承部装与所述泵座之间均设有挡油罩，所述叶轮与所述泵座之间设有泵体后密封环、泵体前密封环、中间密封环、低压端密封腔密封环和高压端密封腔密封环，所述泵座下连接有排油系统和排污系统，所述泵盖上连接有放气冲洗系统。本发明密封性良好，不容易污染环境，结构紧凑、维修方便，效率较高且安全可靠，使用寿命长。

Centrifugal pump with two through-flow rotors - having radial passages extending between respective suction and pressure chambers formed in casing

The centrifugal pump has a housing (1) which is closed off at both its ends by flanges. A shaft passes through one of the flanges and carries two rotors (11, 12) located inside the pump housing. Each rotor has radial bores leading from a central hollow chamber (16). There is a suction port (24) leading into a ring shaped suction chamber connected to the central hollow chamber of each rotor. At pressure pipe port is connected to the two chambers enclosing the two rotors.

Pump impeller

An impeller for a pump, the impeller comprising a main body which in use is rotatable about a central axis, the main body including a front side and a rear side, the front side having a generally spherical cap-like or dome-shaped surface with an apex region in the vicinity of the central axis and a peripheral outer region in the vicinity of the rear side, a plurality of channels extending through the main body each having an inlet opening and an outlet opening, the inlet openings being in the vicinity of the apex region and the outlet openings being in the vicinity of the peripheral outer region.

SIDE FLOW PUMP.

UNA BOMBA DE FLUJO TOTALMENTE CIRCUNFERENCIAL QUE INCLUYE UN MOTOR QUE TIENE UN ESTATOR, UN EJE DISPUESTO DE FORMA ROTATIVA EN EL ESTATOR Y UN ROTOR MONTADO SOBRE EL EJE DE MODO QUE ROTE RESPECTO AL ESTATOR, UNA CUBIERTA DE BASTIDOR EXTERIOR (25) DISPUESTA ALREDEDOR DEL ESTATOR, UNA CARCASA DE LA BOMBA CILINDRICA EXTERIOR (5) DISPUESTA ALREDEDOR DE LA CUBIERTA DE BASTIDOR EXTERIOR CON UN ESPACIO ANULAR (40) FORMADO ENTRE MEDIAS Y UN CONJUNTO DE BOMBEO MONTADO EN UN EXTREMO DEL EJE PARA BOMBEAR UN FLUIDO DE MODO QUE ENTRE EN EL ESPACIO ANULAR (40). LA CARCASA DE LA BOMBA CILINDRICA EXTERIOR TIENE UNA VENTANA DE SUCCION (5A,5B) PARA LA INTRODUCCION DE UN FLUIDO A SU TRAVES. HAY UNA CAJA DE SUCCION (10) MONTADA SOBRE LA CARCASA DE LA BOMBA CILINDRICA EXTERIOR (5) PARA LA INTRODUCCION DE UN FLUIDO A SU TRAVES Y A TRAVES DE LA VENTANA DE SUCCION (5A,5B) EN EL CONJUNTO DE BOMBEO, EN DONDE LA CAJA DE SUCCION TIENE FORMADO EN ELLA UN ORIFICIO DE SUCCION. A FULLY CIRCUMFERENTIAL FLOW PUMP INCLUDING A MOTOR THAT HAS A STATOR, A SHAFT ROTARY ARRANGED ON THE STATOR AND A ROTOR MOUNTED ON THE SHAFT SO THAT IT ROTATES FROM THE STATOR, AN EXTERNAL FRAME COVER (25) STATOR, AN OUTER CYLINDRICAL PUMP HOUSING (5) ARRANGED AROUND THE OUTER FRAME COVER WITH A RING SPACE (40) FORMED BETWEEN STOCKINGS AND A PUMP ASSEMBLY MOUNTED AT ONE END OF THE SHAFT TO PUMP A FLUID IN A FLUID MODE THE NULL SPACE (40). THE OUTER CYLINDRICAL PUMP HOUSING HAS A SUCTION WINDOW (5A, 5B) FOR THE INTRODUCTION OF A FLUID THROUGH IT. THERE IS A SUCTION BOX (10) MOUNTED ON THE OUTER CYLINDRICAL PUMP HOUSING (5) FOR THE INTRODUCTION OF A FLUID THROUGH IT AND THROUGH THE SUCTION WINDOW (5A, 5B) IN THE PUMP ASSEMBLY, WHERE THE SUCTION BOX HAS A SUCTION HOLE FORMED IN IT.

Two-way impeller in a centrifugal pump having vertical drive shaft

In a two-way impeller in a centrifugal pump having a vertical drive shaft the impeller channels are formed such that a circulation flow is provided outwardly in the lower part thereof and inwardly in the upper part. By openings in the impeller between the two impeller inlets a suction effect is induced in a direction toward the upper inlet of the impeller. On the pump drive shaft and below the two-way impeller a centripetal-inducer may be mounted.

Bladed rotor intended for a pump of the type of those intended for motor vehicle window washers; pump comprising such a rotor; and window washer for motor vehicle including such a pump

Bladed rotor intended for a pump of the type of those intended for motor vehicle window washers, characterised in that at least two blades (2a, 2b) have at least their two distal free end parts (26a, 26b) having, in longitudinal radial cross-section or orthoradial transverse section, two substantially different shapes.

Impeller and centrifugal pump having same

The invention relates to an impeller (3) for transporting a liquid (F) through a centrifugal pump (1) by rotation about a rotation axis (R) in the centrifugal pump (1), which can be operated with reduced stagnation regions, and relates to a centrifugal pump (1) having such an impeller (3). The impeller (3) comprises at least one first circular disk (3a) with a central opening (34) and a first surface (31) extending from the central opening (34) to a radially outer rim (33), wherein on the first surface (31) there are arranged multiple main vanes (41) which each extend from the central opening (34) as a starting point (41a) to the rim (33) as an endpoint (41e), having a pressure side (41d) and a suction side (41s), and, between two adjacent main vanes (41), in each case one intermediate vane (42) extending from a starting point (42a) in the direction of the disk rim (33) to an endpoint (42b), wherein the respective starting point (42a) of the intermediate vanes (42) is at a distance (DZ) from the center of the impeller (3) that is greater than the diameter of the central opening (34) and the intermediate vanes (42) are in each case arranged closer to the pressure side (41d) of the main vane (41) following the intermediate vane (42) during rotation of the impeller (3) than to the suction side (41s) of the main vane (41) preceding this intermediate vane (42).

Pump impeller

An impeller for a pump, the impeller comprising a main body which in use is rotatable about a central axis, the main body including a front side and a rear side, the front side having a generally spherical cap-like or dome-shaped surface with an apex region in the vicinity of the central axis and a peripheral outer region in the vicinity of the rear side, a plurality of channels extending through the main body each having an inlet opening and an outlet opening, the inlet openings being in the vicinity of the apex region and the outlet openings being in the vicinity of the peripheral outer region.