Pneumatic opposite acting plunger pump

Technical Field

The invention relates to a pneumatic opposite acting plug energy saving water pump.

Background Art

In the metallurgical industry for continuous casting production workshop bad water pump working conditions, is generally a crystallizer, fan-shaped section of the device such as circulating cooling water. In the water also a large number of cooling sheet iron, silt and the like large particle impurity, more turbid, and generally is a great flow, water pump work for a long time, the great electric power consumption, and high failure rate, increase the production cost of the enterprise.

At present, the continuous casting workshop for the sedimentation tank or the production process links the pump most of the centrifugal water pump or reciprocating plunger water pump (motor drive), there are existing problems mainly:

A, centrifugal water pump compared with plunger pump, low efficiency, is generally 70 - 80%, if the water quality is good and large particle impurity or large flow under the condition that some of the efficiency is low.

B, compared with the reciprocating plunger water pump efficiency of the centrifugal pump will be high, the highest some can reach 98%, but the electric power consumption more.

Therefore, continuous casting shop centrifugal pump efficiency is low, plunger water pump electric energy consumes many.

Content of the invention

According to the technical problems raised by the, provides a role of the pneumatic opposite plunger pump, in order to solve the prior continuous casting shop water pump, has low efficiency or the power consumption of a plastic. The invention adopts the technical means as follows:

A pneumatic oppositely acting piston pump, comprising a pump body, the shape of the left and right sides of the inner cavity of the pump body are respectively provided with a group of embolism body, under the middle part of the pump body on the two sides of the water inlet and water outlet on the under, the end of the left and right sides of the pump body are respectively provided with a flange and the driving mechanism; the left and right sides of the pump body and the driving mechanism embolism body has the same structure; to the left of the embolism body which comprises a piston rod, the piston rod and the right side of the sequentially through the end of the dish-shaped spring I, plug and a Belleville spring II; said driving mechanism comprises a cylinder and a coupling connector, said coupling connector are respectively connected with the two ends of the cylinder and the piston rod of the piston joint left side nose; when the source of the drives the cylinder movement, through the connecting joint at the same time drives the plug body to perform the reciprocating motion.

The outer wall includes as a preferred states embolism far away from the water outlet on the side of the sealing portion and close to a water outlet on the side of a vertical axis; said sealing part processing used for mounting the sealing ring R angle of the seal groove, the closing part is provided with a taper, the cone angle α, 15° ≤ α ≤ 20°; the plug close to the center of one side of the water outlet on the with a groove, the taper of the side wall of the groove, the cone angle β, 25° ≤ β ≤ 30°.

As of preferably said sealing ring is made of carbon fiber materials is added to the PTFE sealing ring, the sealing ring cross section is semicircular.

As the preferred the cylinder with the gas source is arranged between the reversing valve, the outlet end of the water outlet on the inlet end of the and a lower water inlet are respectively provided with a one-way valve, so that the water from entering the water inlet, the water outlet on the discharge.

As the preferred the piston rod through the locking nut down the left side of the Belleville spring I, and keep the dish-shaped spring I has a certain tightening force; the right end of the piston rod by a screw cap the butterfly spring II locking.

As the preferred the pump body is a cast member, the contact surface of the inner cavity of the pump and plug with 0.08 mm - 0.12 mm Cr plating layer.

Preferably the piston rod is the same as the flange is arranged between the sealing of useful J-shaped sealing ring, the flange is provided with a hold-down of the outer side of the pressure plate.

As preferred by the outside diameter of Φ Amm states embolism, the pump body and the inner diameter of Φ Bmm, Φ A=ΦB - 4.

As the preferred the shrinkage-the mouth of the cone angle α is 20°; the side wall of the groove for the taper β 28°.

As preferably the contact surface of the inner cavity of the pump and plug with 0.1 mm Cr plating layer.

Compared with the prior art, the invention of the pneumatic opposite acting piston pump, has the following advantages:

1. the invention of the pneumatic oppositely acting piston pump, the shape of the left and right sides of the inner cavity of the pump body are respectively provided with a group of embolism body, under the middle part of the pump body on the two sides of the water inlet and water outlet on the under, through the reasonable water pump block design, making the water pump suction drainage capacity amplification, the form relative to the dual-plug, so that the fluidity of water can reasonably, save energy consumption loss, and not easy to be blocked, to reduce the failure rate.

2. the invention of the pneumatic pump is in opposite directions, the left and right sides of the end of the pump body are respectively provided with a flange and drive mechanism; said driving mechanism comprises a cylinder and the connection joint, when the source of the drives the cylinder movement, through the connecting joint at the same time drives the plug body to perform the reciprocating motion. To achieve the continuous casting workshops have been some compressed air energy to replace the traditional electrical energy to drive the, energy-saving and emission reduction, energy saving for the enterprise, the optimization of the industrial structure.

3. the invention of the pneumatic pump is in opposite directions, with the contact surface of the inner cavity of the pump plug with 0.08 - 0.12 mm Cr layer plating, plating Cr layer not only reducing the frictional resistance, but also protect the pump body from the erosion of the water medium, Cr layer is plated on the pump body can not use the stainless steel pump body, saving resources and costs, and Cr plating layer is too thin, then the cladding layer and the substrate binding can not good, easy to peel off; Cr plating layer is too thick, the internal stress of the plating layer is uneven distribution of, in the heated and under special environment under the effect of the internal stress of the easy to crack, and short service life.

Description of drawings

The Figure below and specific embodiment of the present invention for further detailed description.

Figure 1 is the structure diagram of the present invention (the plunger the original position, namely emptying medium).

Figure 2 is a structure diagram of the present invention (plunger movement limit position, that is full of a medium).

Figure 3 is the invention operation system diagram (in the Figure C as gas source, D for the direction of the air flow, the water flow direction is E).

Figure 4 is the invention inside the pump amplifying structure diagram.

Figure 5 is the amplifying structure diagram of the present invention plug.

Figure 6 is the overall schematic view of the invention.

Wherein: 1, cylinder, 2, connection joint, 3, pressure plate, 4, J-shaped sealing ring, 5, flange, 6, piston rod, 7, the pump body, 8, locking nut, 9, the Belleville spring I, 10, plug, 11, the Belleville spring II, 12, nut, 13, sealing ring, 14, reversing valve, 15, check valve, 16, outlet, 17, the water inlet.

Mode of execution

As shown in Figure 1 to Figure 6 is shown, a pneumatic oppositely acting piston pump, comprising a pump body 7, the pump body 7 is a cast member, the pump body 7 with the inner cavity of the plug 10 with the contact surface of the 0.08 mm - 0.12 mm Cr plating layer, the preferred states the pump body 7 with the inner cavity of the plug 10 with the contact surface of the 0.1 mm Cr plating layer. Cr-plated layer, the plating layer surface is flat and smooth, to reduce the friction resistance of the sealing ring and the cavity; and the plating layer of anti-rust capacity are relatively strong, because the continuous casting workshop and more complex medium water quality, corrosion factors, so the presence of the Cr plating layer can greatly reduce the service life of the pump.

The shape of the pump body 7 left and right sides of the cavity are respectively provided with a group of embolism body, the pump body 7 in the middle of the upper and the lower of the two sides of the upper outlet 16 and a lower inlet 17, the upper water outlet 16 and a lower inlet 17 is fixed to the pump body 7 of the central position, the upper water outlet 16 and a lower inlet 17 of the connecting pipe used for connecting the end part of the flange, so that the lower opening of the inlet as the next 17 water inlet, as the upper opening of the water outlet on the 16 outlet, realizing the flowing direction of water in the shape of a.

The pump body 7 of the end of the left and right sides are respectively provided with a flange 5 and the driving mechanism; the pump body 7 embolism body and left and right sides of the driving mechanism has the same structure; to the left of the embolism body which comprises a piston rod 6, and the piston rod 6 is fixed in the end of the right side of the Belleville spring I9, plug 10 and Belleville spring II11; the piston rod 6 through the left side of the locking nut 8 press the Belleville spring I9, and keep the Belleville spring I9 has a certain force; the piston rod 6 to right end by a screw cap 12 a disk spring II11 locking.

The plug 10 comprises a far away from the outer wall of the upper outlet 16 on one side of the sealing portion and close to the upper outlet 16 on one side of the vertical axis; said sealing part processing used for mounting the sealing ring 13 R angle of the seal groove, the angle R of the seal groove is provided with a plurality of, as shown in Figure 5, the closing part is provided with a taper, the cone angle α, 15° ≤ α ≤ 20°, specific numerical value can be selected according to the actual dimensions of the apparatus, preferably the closing part of the cone angle α is 20°; here vertical axis for the retention of the two groove 13 of the position, the appearance of the closing of the form; said embolism 10 close to the upper outlet 16 with the center of one side of the groove, the taper of the side wall of the groove, the cone angle β, 25° ≤ β ≤ 30°, specific numerical value can be selected according to the actual dimensions of the apparatus, preferably of the side wall of the groove for the taper β 28°, and the groove processing to keep the plug 10 a certain thickness of the shape of the location of the trash.

The seal groove 13 and the cone angle of this special design, the objective is to make in the process of movement increase embolism body for the medium of the thrust and reduce the friction resistance of the cylinder block, that is from the position A movement to embolism body B, 25 - 30° angle do of the bell mouth, can increase the thrust for the medium, especially for the large particle impurities and medium; at the same time the movement of the from the position embolism body B to A, 15 - 20° angle do of the necking down, reducing the seal groove 13 with the contact area of the cylinder block, reduce the friction resistance.

The seal ring 13 is added to the PTFE sealing ring made of carbon fiber materials, such material has a wear-resistant, high temperature resistant, long service life and easy maintenance and replacement and the like, can effectively protect the embolism with smooth inside the cylinder body, the sealing ring 13 is semi-circular cross-section, with the plug 10 on the outer peripheral of the seal groove (i.e. the groove R angle) is matched with the size, the seal structure in the form of reasonable force. And guarantee the plug 10 on the periphery of the size of the outside of the seal groove is matched.

The driving mechanism comprises a cylinder 1 and connection joint 2, the coupling joint 2 are respectively connected with the two ends of the cylinder 1 and the piston rod of the piston joint 6 left side nose of; the piston rod 6 with the flange 5 is arranged between the sealing of useful J-shaped sealing ring 4, the flange 5 is provided with a hold-down of the outer side of the pressure plate 3.

When the source of the drive cylinder 1 movement, through the connecting joint 2 at the same time drives the plug body to perform the reciprocating motion, in the pump body 7 as a result of the gas volume changes of the shrinking, medium water is to be drawn into and discharged from the pump body 7, to achieve the purpose of the pumping water.

The cylinder 1 with the gas source is arranged between the reversing valve 14, the upper water outlet 16 and under the outlet end of the water inlet 17 are respectively provided with an inlet end of a one-way valve 15, so that the water from the water inlet 17 into the, upper water outlet 16 is discharged. The plug 10 the outside diameter of Φ Amm, the pump body 7 and the inner diameter of Φ Bmm, Φ A=ΦB - 4. The plug 10 with the pump body 7 unilateral 2 mm gap to prevent the two rigid contact, causing unnecessary scratch damage; filling the sealing ring between the two 13, will not medium causing a leak.

As shown in Figure 3, stated this invention pneumatic opposite action plunger pump operating system diagram, in the Figure is the source of the C, D for the direction of the air flow, the water flow direction is E.

The invention the pneumatic opposite action plunger pump water pump system, the power source from the continuous casting workshop in the self-system, the reversing valve 14 act on the cylinder 1, the pump body 7 through the inlet and outlet side check valve 15 control medium flow direction.

In the process that the water inlet of the plunger pump, the inlet side check valve open state, the water outlet side check valve closed; pump outlet process, water outlet side check valve open state, the inlet side check valve closed state, and the medium water continuously from the water outlet 16 in the discharge cavity, until the emptying, to complete a cycle.

The invention of the pneumatic pump is in opposite directions, it is a energy-saving water pump, by the two sides of the main body do symmetrical components of motion in opposite directions, main parts in addition to the reversing valve 14 outside, for the remaining amount of the 2 member.

The invention of the pneumatic pump is in opposite directions, from the continuous casting workshop system gas source passes through a reversing valve 14 act on the cylinder 1, setting cylinder 1 (inner diameter) and the diameter of the cylinder body of the pump casing 7 diameter (inner diameter) N times; the cylinder 1 of the diameter of the inner cavity of the SC, pressure is PC, the pump body 7 and the inner diameter SB, pressure is PB.

Due to the piston by the thrust F=S × P, then the SC × PC=SB × PB, but also cylinder 1 (inner diameter) of the diameter of the cylinder is the design of the pump body 7 N times the diameter (inner diameter), then the PB=N × PC, the pump pressure amplifying N times, in shop air pressure under the situation of certain, through changing the cylinder 1 with the pump body 7 and the diameter of the pump (inner diameter) of the relationship between the lift.

The invention of the pneumatic oppositely acting piston pump, when working, when the pump body 7 in the position of the plunger by B to A in the process position, the pump and the water feeding process, at this moment the water inlet side of the one-way valve open state of the hydraulic component, and the outlet side hydraulic element one-way interacts state, medium water continuously from the inlet 17 flows into the cavity, until the full; when the pump body 7 in the position of the plunger by the position of the A to B in the process, the pump and the outlet process, at this moment the water outlet side of the one-way valve open state of the hydraulic element, water inlet side of the hydraulic element one-way interacts state, medium water continuously from the water outlet 16 in the discharge cavity, until the emptying. So as to complete a cycle.

A conventional plunger pump and an outlet of the pump body are in one-sided, medium water from the inlet to the outlet of the process, on the assumption that the inlet velocity is VI, the outlet speed of VO, is

VO=- VI

The speed changing process is the consumption of energy, the energy consumption of the speed:

N=1/2m V2 × L

L is the length in the pump body cavity.

The invention of the pneumatic pump is in opposite directions, will import and export is controlled by the center position, is also considered in the energy loss of water can be reduced, so can the efficiency of the pump.

As shown in Figure 1, the pump body 7 at the two ends in the plunger is in the position B, namely the original position and the plunger will medium water emptying position, at this moment the two ends of the plunger just contact. The structural advantage of the plug itself, in the two ends of the discharge water in the colliding in the process of the plunger, the plunger opens greatly gathers greatly, speed, thrust especially large, to help remove some of the larger particles in the impurity, at the same time the plunger cavity of the water there will be very great reacting expansion plunger, at this moment the Belleville spring I9 a buffer function. Belleville spring II11 is in order to strengthen the embolism II10 strength, prevent clotting II10 excessive deformation, reduce the probability of fatigue deformation, prolonged service life, at the same time, in order to avoid the collision of the two ends of the excessive plunger, slowing down the impact force.

The invention of the pneumatic oppositely acting piston pump, through the reasonable water pump block design, making the water pump suction drainage capacity effective amplification, the form relative to the dual-plug, so that the fluidity of water can be more reasonable, save energy consumption loss, plunger opens greatly gathers greatly not easy to be blocked, reducing the probability of equipment failure, the electric energy is saved, and achieves the purpose of energy saving and emission reduction.

The invention of the pneumatic oppositely acting piston pump, the water pump is opens greatly gathers greatly forms of work is continuous casting production process required. The invention of the pneumatic pump is in opposite directions, from the design on the whole this plunger water pump operation of the process system, the system comprises a pipeline element is connected with the equipment, the optimization of the design of the pump body, the plunger pump from the overall system design and operation process.

The invention of the pneumatic oppositely acting piston pump, for is angry the source place, in particular to the continuous casting workshop and source of energy saving and the production process using the upgrade of the item. Continuous casting production workshop to energy-saving optimizing upgrading, the use of continuous casting billet generate a large amount of heat reserve of compressed gas energy. Such a large amount of compressed gas energy on the energy-saving of the water pump of the present invention drive energy, thus greatly saving the electric energy of the pump, but no pollution to the environment, in accordance with the National energy saving and emission reduction of calcium carbide contains much policy.

The invention of the pneumatic pump is in opposite directions, in the continuous casting workshop has been in the process of production on the basis of the energy of the compressed air, the combination of the production process of the continuous casting workshop and save energy consumption considerations, the workshops have been some compressed gas source by combining with the plunger pump, the design of a pneumatic opposite acting plug energy saving water pump and system.

The invention of the pneumatic oppositely acting piston pump, is only a single-cylinder pump, in pursuit of continuous and large flow, according to the need to design the multi-cylinder and continuous operation of a pneumatic plunger energy saving water pump.

Of the above, only the invention better specific embodiments, but the scope of protection of the present invention is not limited to this, any familiar with the technical personnel in the technical field of the invention within the scope of the technology revealed, according to the technological scheme of this invention and its inventive concept of replacement or change to be equivalent, should be covered by the scope of protection of this invention.