Mining imported air pump blockage -proof high strength tap

The utility mode relates to a mining imported air pump blockage -proof high strength tap, the current air pump of solve tap exist easy block to crush by pressure cause that work efficiency is low, the material extravagant and the problem of unable pump drainage ponding. Including the air pump body and the steel pipe that draws water, the air pump body is provided with the suction hose of being connected with both with drawing water between the steel pipe, and the steel pipe overcoat that draws water has the left end to lie in the steel pipe I that draws water on its right side, the steel pipe I's that draws water the left end steel pipe lateral wall stationary left end steel sheet that is provided with and draws water, and the right -hand member of draw water steel pipe I and the steel pipe that draws water flushes, and just right -hand member between them is fixed with the right -hand member steel sheet, on the terminal surface of right -hand member steel sheet and draw water steel pipe ...

Intelligent beehive integrated with Raman spectrum and online detection method

The invention is suitable for the technical field of data processing, and provides an intelligent beehive integrated with Raman spectrum, which comprises a beehive cover and a beehive body, and also comprises a plurality of honeycomb plates arranged in the beehive body; a control module, a purification assembly, a ventilation assembly, a temperature and humidity sensor, a sound sensor, an image sensor assembly and a Raman spectrum on-line monitoring analysis module are also arranged in the box body; the ventilation assembly is used for ventilating the box body, and the Raman spectrum on-line monitoring and analyzing module is used for detecting characteristic components in honey; the control module, the purification assembly and the ventilation assembly are installed on the inner side face of the box cover, the temperature and humidity sensor assemblies, the purification assembly and the ventilation assembly are all connected with the control module through wires, and the temperature and ...

A clear hole device for anchor eye construction

The utility mode relates to a clear hole device for anchor eye construction, including installing in the connecting sleeve of anchor eye drilling rod water injection hole department, through connection female connection cover on the section of thick bamboo wall of connecting sleeve, this female connection overlaps the water injection hole UNICOM with the anchor eye drilling rod. Female connection cover threaded connection has directly, through and through tip diameter was 3 fens and had an external screw thread structure, through and through main aspects diameter is 1 cun, its tip is opened there are two pinholes, through and through main aspects cartridge is air pipe even, the tuber pipe end is equipped with the ring channel, in the time of in through and through main aspects are inserted to the tuber pipe end, inserts U type round pin in the through and through main aspects pinhole, and this U type round pin lies in the end ring channel of tuber pipe. Behind the end anchor eye of accomplishing ...

Auxiliary brake friction damping device of downward belt conveyor

The invention relates to an auxiliary device of a downward belt conveyor and in particular relates to an auxiliary bake friction damping device of a downward belt conveyor. The auxiliary bake friction damping device of the downward belt conveyor comprises a damping rack, a V-shaped support roller rack and two spring dampers, wherein the V-shaped support roller rack comprises two side support rollers and a middle support roller which are supported on a base of the support roller rack; the two side support rollers and the middle support roller are surrounded to form a V-shaped groove. The auxiliary bake friction damping device of the downward belt conveyor is capable of effectively overcoming excessive downward sliding force in the downward conveying process of the downward belt conveyor, avoiding the operation of a motor in the generation state, avoiding the phenomenon that the belt is faster and faster under the condition of overload, avoiding the galloping accident, assisting the brake ...

Coxsackievirus and application of coxsackievirus in preparation of anti-tumor drugs

The present invention discloses a coxsackievirus, which is a coxsackievirus group B type 3 mutant strain, wherein the genome site 2690 is adenine, and the genome site 3231 is guanine. The coxsackievirus has significant cytolytic capacity and selection specificity, can be used for preparation of anti-tumor drugs, especially anti-lung cancer drugs, anti-liver cancer drugs, anti-prostate cancer drugs, anti-melanoma drugs, anti-breast cancer drugs, anti-colon cancer drugs and anti-rectal cancer drugs, is used for preparation of anti-tumor drugs, and has characteristics of good anti-tumor effect and high safety.

Method for preparing benzaldehyde through catalytic oxidation of styrene

The invention relates to a method for preparing benzaldehyde through catalytic oxidation of styrene, in particular to a method for preparing the benzaldehyde through the catalytic oxidation of the styrene by using an iron-platinum (FePt) nano-wire as a catalyst. The method comprises the following steps of: using the iron-platinum nano-wire as the catalyst and one of toluene, dioxane, dimethyl formamide, dimethyl sulfoxide, acetonitrile or chloroform as a solvent; in an oxygen atmosphere and under normal pressure, reacting for 3 to 32 hours at the temperature of between 50 and 90 DEG C; cooling the mixture after the reaction, and separating the mixture to obtain the benzaldehyde. The preparation method has a mild reaction condition, has an improved yield compared with that of the prior art, and is more economical and environment-friendly.

Reaction device suitable for aldol reaction

The invention belongs to the field of an aldol reaction device, and relates to a chromatographic column which can be used for fixing a catalytic agent on a stationary phase, wherein the chromatographic column is a reaction device suitable for aldol reaction. The reaction device is the chromatographic column, the stationary phase in the chromatographic column is silicon dioxide, the surface of thesilicon dioxide is connected with catalytic agent praline, and a coupling agent which connects the silicon dioxide and the catalytic agent praline is 3-azyl propyltriethoxysilane. The catalytic agentis fixed on the stationary phase, and mobile-phase reaction raw materials can repeatedly flow through the catalytic agent, so that the reaction can be completely performed; and the catalytic agent can not be retained in a reaction product, so that the reaction product can be conveniently separated.

SPI Flash data rapid access method

The invention belongs to the technical field of data processing, and particularly relates to an SPI Flash data quick access method, which comprises an index table and a data area, the index table is used for positioning the position of each type of data, and the data area is used for storing SPI Flash data; the index table comprises an index table attribute item and a data index item, the index table attribute item and the data index item adopt the same data structure, and the index table attribute item and the data index item comprise a state, address offset and the number of sectors required by a corresponding data area; the first sector of the data area is an index table of the type of data, each piece of data corresponds to one index, key information of the data is stored, and the key information comprises an entry number, a state and an absolute physical address of data storage. According to the method, the index table is combined with the data partition, so that the sector erasing ...

Simple and easy mosaic structure of elevator sedan -chair wall

The utility model provides a simple and easy mosaic structure of elevator sedan -chair wall, including adjacent first sedan -chair wall and second sedan -chair wall, first sedan -chair wall with having the side of buckling backward on the second sedan -chair wall respectively and connecting the limit, the side of first sedan -chair wall is connected the edge and is seted up the bar hole of following upper and lower direction and extending, and the side of second sedan -chair wall is connected the edge and is corresponded the upper end position in bar hole is equipped with the connecting piece, the lower extreme in bar hole has the connecting hole, the diameter of connecting hole is greater than the width in bar hole, the connecting piece have with the head of the diameter looks adaptation of connecting hole and with the pole portion of the width looks adaptation in bar hole, when first sedan -chair wall and the concatenation of second sedan -chair wall, the side of second sedan -chair wall ...

Method for catalytically oxidizing carbon monoxide

The invention relates to a method for catalytically oxidizing carbon monoxide by using a nano metal catalyst, belonging to the field of catalytic oxidation. The carbon monoxide is catalytically oxidized to react to obtain carbon dioxide by using a supported catalyst and by using the carbon monoxide and oxygen as reactants; the supported catalyst uses silica gel powder as a carrier and a nano material containing platinum as an active component; the nano material containing platinum is absorbed on the silica gel powder as the carrier by a physical adsorption effect; the nano material containing platinum is a nano wire with a grain size of less than 3 nm or nano particles with a diameter of less than 4 nm; the nano catalyst containing platinum is selected from Pt, Pt@M, FePt or FePt@M, wherein M is selected from one of Cu, Au, Pd or Ru; and the silica gel powder as the carrier has a grain size of 75-150 mum. In the invention, the carbon monoxide is catalytically oxidized by using the nano ...

Fully-mechanized excavating roadway cross-operation construction process

The invention relates to the field of underground fully-mechanized excavation for a coal mine, in particular to a fully-mechanized excavating roadway cross-operation construction process. The fully-mechanized excavating roadway cross-operation construction process comprises the following steps that: I, after a second underground roadway is communicated with a normally constructed first roadway, the left and right peripheral sides of a scraper-trough conveyer of a first roadway coal output system support plate beam parts at the crossed part of the two roadways, and the plate beam height of the plate beam parts meets the requirement that a second machine unit can pass through the scraper-trough conveyer; and II, when the first roadway is in a support state, the second machine unit carries out coal cutting above the scraper-trough conveyer through the plate beam parts, and a carrying part conveys coal; after the construction completion, the second machine unit retreats back to one side of ...

Rotatable elevator operation panel of opening

The utility model provides a rotatable elevator operation panel of opening, including operation panel (5) with control wall (1), control and has seted up the opening on wall (1), operation panel (5) but the connection of switching ground be in on the opening, operation panel (5) have front panel (51) and box (52), the lower limb has support frame (11) respectively on the open -ended, the tip do not set firmly about box (52) left rotation connecting piece (4), rotate connecting piece (4) can around self axis direction rotate and can follow self axis direction from top to bottom with sliding the connection be in support on frame (11), has seted up hanging hole (521) on the side on the right side of box (52), has had on hanging hole (521) locking hole (522), be provided with side frame (13) on the edge of open -ended right side, be equipped with hook spare (2) on side frame (13). Compared with the prior art, the utility model discloses can whole the wall is rotatory be opened from handling ...

Method for preparing amino-compound through catalytic reduction of nitro-compound

The invention belongs to the field of catalytic reduction, particularly relating to a method for preparing amino-compound by taking platinum nanowires as catalyst to carry out the catalytic reduction of nitro-compound. The method for preparing amino-compound from nitro-compound comprises the following step: preparing amino-compound by using nitro-compound as reactant and platinum nanowires as catalyst at 100 DEG C under 0.1-10 of atmospheres. In the invention, as the platinum nanowires are used as catalyst to carry out the catalytic reduction of nitro-compound and generate amino-compound, andthe reaction can be carried out at 0-100 DEG C and under 0.1-10 of atmospheres and the reaction conditions of high temperature and high pressure can be avoided. Therefore, the required reaction equipment is simple, the energy source consumption is reduced, and the method is more economical compared with the prior art.

Hand-barring device and elevator comprising same

The invention relates to a hand-barring device (100) which comprises a handwheel (1), a worm (2), a worm gear (3) and a support (4) and is characterized in that the worm gear (3) is installed in the support (4), the hand-barring device (100) further comprises at least one transmission pillars (5) and at least one corresponding transmission hole (51), the transmission pillars (5) are connected with the worm gear (3), the transmission holes (5) are correspondingly distributed on a rotary wheel (300) to be driven by the hand-barring device (100), and the hand-barring device (100) can drive the rotary wheel to rotate by inserting the transmission pillars (5) into the corresponding transmission holes (51) and fixing the support (4) on a machine frame (200). The hand-barring device is simple in structure, low in cost, detachable, and capable of realizing self-locking and high torque. The invention further relates to an elevator comprising the hand-barring device.

Elevator is to heavily overhauing platform

The utility model discloses an elevator is to heavily overhauing platform installs between heavy guide rail in pairs, including fixing respectively a pair of support on the heavy guide rail in pairs rotates along the pivot of horizontal direction and connects footboard on a pair of support and rotate to connect along vertical direction respectively and be in a pair of pedal support spare on a pair of support, elevator is to heavily overhauing platform has fold condition and development condition, under fold condition, the footboard is erect one side of a pair of support, inside relative setting of a pair of pedal support spare the below of footboard, under development condition, a pair of pedal support spare parallel arrangement and to extend in the outside of a pair of support, the footboard is followed the downward upset of pivot is to keeping flat on a pair of pedal support spare. The utility model discloses structural design is ingenious, and convenient operation safety lets the maintainer ...

Power distribution terminal remote signaling processing system and method

The invention belongs to the technical field of remote signaling processing, and particularly relates to a power distribution terminal remote signaling processing system and method. According to the method, only data storage and decoding notification tasks are carried out in the interrupt processing, and remote signaling processing is completed in the decoding task and the data processing task, so that the situation that large data volume can not be completed in the interrupt is avoided; according to the invention, the confirmation of the remote signaling displacement determines the remote signaling displacement by the product of the remote signaling serial number in the remote signaling processing module in the data processing system and the acquisition interval duration of the data sampling system, the two processes of the remote signaling displacement confirmation and the remote signaling timestamp are decoupled, the complexity is simplified, and the anti-shake precision is improved; ...

Photocatalytic oxidation degradation method of wastewater containing dye

The invention belongs to the field of sewage treatment, in particular to a method for degrading wastewater containing dye under the irradiation of sunlight by taking a Pt nanowire as a light catalyst, which comprises the following steps: (1)taking the Pt nanowire with the diameter less than 3nm as the light catalyst, adding the light catalyst into the wastewater containing the dye to be treated, suspending and dispersing the light catalyst in the wastewater containing dye under the conditions of natural light and stirring, and carrying out catalytic oxidation reaction for 20 to 480min; and (2) stopping the stirring, sinking the PT nanowire into the bottom of water, discharging the wastewater on an upper layer which is treated, recovering the light catalyst, flushing with water for 2 to 3min, and reusing. By taking the sunlight as a light source, the method has the advantages of energy saving, low cost and simple operation; and in addition, the Pt nanowire has the advantages of high photocatalytic ...

Method for extracting and purifying artemisia rupestris medicinal material

The invention discloses a method for extracting and purifying an artemisia rupestris medicinal material. The method comprises the following steps: by taking an artemisia rupestris medicinal material as a raw material, crushing the whole artemisia rupestris herb, heating, refluxing and extracting by using an ethanol solution, concentrating, and purifying by using HPD300 macroporous resin to obtain the purified part of the artemisia rupestris medicinal material. In the extraction and purification process, 11 chemical components such as rupestonic acid are used as evaluation indexes, weights are given to the indexes by using an entropy weight method, and comprehensive scores are calculated to screen and optimize process parameters. According to the method, the extraction and purification process is optimized by taking clear active ingredients as targets, the content of the active ingredients is effectively increased, and the method is simple in process, easy to operate, low in equipment requirement ...

Positive and negative patch cord training apparatus of contactor

The utility mode relates to a positive and negative patch cord training apparatus of contactor, when the present electrician student of solve trains the scene arrange exist waste time and energy, the cost is higher and influence the problem of training quality. Including the veneer edge gluer, be provided with at least a set of contactor wiring system on the veneer edge gluer, every montage tentaculum wiring system includes killer switch, circuit breaker, control button, binding post row, contactor, motor comprehensive monitor and control ware, motor, relay with veneer edge gluer bolted connection, distributes about killer switch, circuit breaker, control button in the most row of going up of veneer edge gluer, distributes in the centre of veneer edge gluer one row about contactor, binding post arrange, and motor comprehensive monitor and control ware, motor set gradually in the below of contactor, and the relay is provided below binding post arranges. The utility model discloses arrange ...

Method for synthesizing amide compound under catalysis of platinum nanowire

The invention relates to a method for synthesizing an amide compound under catalysis of platinum nanowires. Specifically, the method comprises the following steps of adding platinum nanowires dispersed in ethanol into a reactor; removing ethanol under a reduced pressure; adding aluminum trichloride, a reaction solvent, pyridine, an amine compound, an aldehyde compound and an oxidant, carrying out a heating reaction in an oil bath under stirring; and purifying by column chromatography to obtain the amide compound. A molar ratio of the aldehyde compound to the amine compound to aluminum trichloride to pyridine to the platinum nanowires to the oxidant is 0.5-3:0.5-3:0.1-0.5:0.5-2:0.1%-2%:0.5-5; and a reaction temperature of the heating reaction is 80-140 DEG C; and a reaction time is 16-24 hours. The platinum nanowires are used as a catalyst, and have high catalytic activity and stable performance. The method provided by the invention can achieve relatively high yield, is mild in conditions ...

Metal complex and synthesis and use thereof

The invention discloses a metal complex, synthesis and application thereof, wherein the product can be used as a catalyst for the thermal decomposition of ammonium perchlorate. The invention belongs to the technical field of chemical synthesis and propellant application. The technical proposal of the invention is to use 5 (Z)-amino-2-substituted-phenyl-1H-imidazole-5(2H)-ketoxime-3-oxygen and metal salts as raw materials to synthesize a kind of metal complexes which have remarkable catalytic effect on the thermal decomposition of the ammonium perchlorate, the product can be used as the catalyst for accelerating the burning rate of the propellant and has the advantages that raw materials are available, the preparation process is easy to realize, and the product is advantageous to popularization and application.

Bridge monitored control system in step turns

The utility model discloses a bridge monitored control system in step turns. It include the first bridge section of turning, second turn the bridge section, go up cushion cap, cushion cap, pier stud, total powerstation and prism down, the first bridge section of turning, second are turned the outer end of bridge section and all are provided with the prism, the first bridge section of turning, second are turned the bridge section and are on a parallel with the railway setting, the first bridge section of turning, second are turned bridge section center bottom and are provided with cushion cap, pier stud and cushion cap down from top to bottom respectively, lower cushion cap and pier stud junction are provided with ball pivot and carousel, the bridge of the being convenient for connection of turning, the total powerstation setting connects into the outer end of whole bridge at needs. The utility model discloses simple structure has solved the accurate control difficult problem of the in - ...

Metal complex and synthesis and use thereof

The invention discloses a metal complex, synthesis and application thereof, wherein the product can be used as a catalyst for the thermal decomposition of ammonium perchlorate. The invention belongs to the technical field of chemical synthesis and propellant application. The technical proposal of the invention is to use 5 (Z)-amino-2-substituted-phenyl-1H-imidazole-5(2H)-ketoxime-3-oxygen and metal salts as raw materials to synthesize a kind of metal complexes which have remarkable catalytic effect on the thermal decomposition of the ammonium perchlorate, the product can be used as the catalyst for accelerating the burning rate of the propellant and has the advantages that raw materials are available, the preparation process is easy to realize, and the product is advantageous to popularization and application.

Method for preparing amino-compound through catalytic reduction of nitro-compound

Metal complex and preparation and application thereof

The invention discloses a metal complex and preparation and application thereof, and belongs to the technical field of dye synthesis and textile dyeing and finishing. A metal complex dye is prepared by the following steps of: adding 3,4-diamino glyoxime and aroyl sulfonate into an alcohol solvent; adding an acid catalyst into the mixture; reacting the mixture to obtain a derivative of (Z)-4-amido-5-hydroximic-2,5-dihydro-1H-imidazole-3-oxide; and adding the derivative and iron (II) salt into the alcohol solvent for coordination reaction, wherein the metal complex dye can be applied to the dyeing of natural fiber textiles. Because a ligand compound of the metal complex dye used in the invention does not contain an arylamine intermediate and coordination metal ions come from metal salt compounds which are harmless to human body and environment, the metal complex dye is environment-friendly and safe. The metal complex is applied to the dyeing of the natural fiber textiles and has the advantages ...

Special anchor ware of annotating of drill carriage

The utility model belongs to well drilling construction field, annotates the anchor ware and damages easily when annotating stock or anchor rope in order to solve the drill carriage, influences the problem of production progress, the utility model provides a special anchor ware of annotating of drill carriage annotates the whole dumbbell -shaped structure of being small at both ends and big in themiddle that is of anchor ware, including integrated into one piece's notes stock head, reducing changeover portion and drill sleeve, it has the round hole no. 1 and round hole no. 2 that is used forconnecting the stock to annotate interior the opening of stock head, and a round hole diameter is greater than round hole no. 2, it has the round hole no. 3 that is used for connecting the drill carriage boring anchor to open in the drill sleeve, and round hole no. 1, round hole no. 2 and round hole are three coaxial. The utility model discloses a carry out assay to traditional drill carriage base, drill ...

Station terminal with digital architecture and fault judgment method

The invention belongs to the technical field of power distribution devices, and particularly relates to a station terminal of a digital architecture and a fault judgment method. The station terminal main control unit is used for collecting alternating voltage in a PT cabinet, receiving current converted by the digital sensing unit and remote signaling, remote sensing and telemetering digital signals, performing logic operation after synchronization, and issuing parameters and instructions to the digital sensing unit through a digital path; the digital sensing unit is used for collecting alternating current quantity and remote signaling, remote sensing and telemetering signals of incoming and outgoing line cabinets of the ring main unit, converting the alternating current quantity and the remote signaling, remote sensing and telemetering signals into digital quantity and sending the digital quantity to the main control unit; an instruction of the main control unit is received, and remote ...

3-oxo imidazole compounds and method for synthesizing same

The invention discloses a new nitrogen heterocyclic ring and a relative synthesis method, in particular to a 3-oxo imidazole compound and a relative synthesis method, belonging to the organic synthesis technical field, which comprises adding 3, 4-diaminoglyxime and aromatic aldehyde or pyridine aldehyde compound at the mol ratio of 1:1-1:1.4 at 50-70DEG C into alcohol solvent, adding acid catalyst, mixing and reacting for 2-45h, filtering, washing and recrystallizing to obtain (Z)-4-amino-5-hydroxyl hydroximino-2, 5-dihydro-1H-imidazole-3-oxide substituted by aromatic group or pyridyl group, whose molecule contains characteristic functional groups as amino, hydroxyl hydroximino and nitrogen oxygen double bond, wherein imidazole ring contains the functional groups. The invention provides a new 3-oxo imidazole compound, which can provide new reaction points, thereby synthesizing natural products and drugs and can provide a new selecting route for capture agent and magnetic compound.

large mining height end-mining fully-mechanized excavating machine manufacturing removing frame channel collapse column passing leg-less supporting erecting construction method

The invention relates to an underground coal mine roadway supporting technology, in particular to a large mining height end-mining fully-mechanized excavating machine manufacturing removing frame channel collapse column passing leg-less supporting erecting construction method. The method comprises the steps that conventional supporting is carried out at a collapse column zone, then H-shaped steel and a single-body column are added, leg-less supports are erected, the supports are fixed into a whole through a pulling rod, one end of each leg-less support is supported by a hydraulic support, the other end of each leg-less support is supported by the single-body column, tight fixing with a top plate is achieved, and when a fully-mechanized excavating machine carries out tunneling below, working can be carried out safely. Stability of the working face top plate is the key factor of coal mine safety, the supporting force of the hydraulic support and the single-body column is fully used, by erecting ...

Mining two -way pressure release air door

The utility model relates to a colliery ventilation facility in the pit, specifically for can be two -way that open, as to have an explosion -proof pressure release function mining two -way pressure release air door, including building in door frame (1) of drift section, the installation is to open two main door leaf (1) and actuating mechanism in the door frame, inlay the installation on every main door leaf (1) and assist door (3), it is connected through pivot (6) and main door leaf (2) to assist door (3), pivot (6) are installed the drive with the connection zone symmetry of main door leaf (2) and are assisted door (3) to positive and negative both sides pivoted spring (7), the quantity more than or equal to 4 of spring (7) is individual. When gas explosion takes place for the one side of air door both sides in the pit, the assisting the door can open the pressure release voluntarily under the effect of shock wave of air door to guaranteeing that the air door is not destroyed by the ...

Septic tank clearance instrument

The utility model relates to a living facilities tool specifically is a septic tank clearance instrument, and the two halves part the same by the structure constitutes, wherein half part is including a left side big arm (11), left forearm (12) and left side grab bucket (13), the lower extreme of a left side big arm (11) is bent, and its tip is articulated with left forearm (12) one end of arcuation, the other end of a left side forearm (12) links firmly with the back of left side grab bucket (13), second half part is including the right side big arm (21), right forearm (22) and right side grab bucket (23), the lower extreme of the right side big arm (21) is bent, and its tip is articulated with right forearm (22) one end of arcuation, the other end of the right side forearm (22) links firmly with the back of right side grab bucket (23), the lower part of big arm in a left side and the big arm in the right side is articulated through the round pin axle, the top of left side grab bucket is ...

Photocatalytic oxidation degradation method of wastewater containing dye

The invention belongs to the field of sewage treatment, in particular to a method for degrading wastewater containing dye under the irradiation of sunlight by taking a Pt nanowire as a light catalyst, which comprises the following steps: (1)taking the Pt nanowire with the diameter less than 3nm as the light catalyst, adding the light catalyst into the wastewater containing the dye to be treated, suspending and dispersing the light catalyst in the wastewater containing dye under the conditions of natural light and stirring, and carrying out catalytic oxidation reaction for 20 to 480min; and (2) stopping the stirring, sinking the PT nanowire into the bottom of water, discharging the wastewater on an upper layer which is treated, recovering the light catalyst, flushing with water for 2 to 3min, and reusing. By taking the sunlight as a light source, the method has the advantages of energy saving, low cost and simple operation; and in addition, the Pt nanowire has the advantages of high photocatalytic ...

Nasogastric tube ties area

Nasogastric tube ties area. Relate to medical instrument annex field, concretely relates to nasogastric tube ties area. The travelling comfort is good, adaptability is wide, can effectively reduce nasogastric tube slippage rate. Take the body including the constraint, the cross section that the body was taken in the constraint is for circular or oval, the constraint takes the both ends head of body to be equipped with the location connecting device who is used for connecting nasogastric tube. When effectively avoiding patient to pull taking off nasogastric tube, improve nursing work efficiency, can also effectively prevent to lead to the fact the damage to patient's local skin. The utility model discloses simple structure for patient alleviates misery and injury, has good practicality.

Rare earth metal-containing porous core-shell nanosphere and preparation method thereof

The invention belongs to the field of nano materials, and particularly relates to a porous core-shell nanosphere containing rare earth metal and a preparation method of the porous core-shell nanosphere. According to the method, a one-pot multi-step method is used for the first time to synthesize trimetal nanospheres enriched with Ce elements inside, and the trimetal nanospheres are used as self-templates for calcination to prepare perfect rare earth metal-containing multi-component porous core-shell nanospheres. Compared with other existing technologies for preparing the core-shell structure, the whole preparation process is green and environment-friendly, the test and operation are simple, the reaction rate is high, and the yield is high. Due to the synergistic effect of multiple components and the special porous core-shell structure, the composite material has good electrochemical performance.

Metal complex and preparation and application thereof

Automatic wagon of industry assembly line

The utility model discloses an automatic wagon of industry assembly line, including automobile body, gearbox, servo motor, two rocker arm mechanism and the main control unit who has the wheel, the gearbox is installed in the platform middle part of automobile body, and servo motor drives the gearbox, and servo motor installs in the bottom of platform. Two rocker arm mechanism have two, and the symmetry sets up both sides around the gearbox, two rocker arm mechanism simultaneous movement of gearbox drive, and two rocker arm mechanism's left side is provided with the carrier, and the carrier lower extreme disposes the front fork. Main control unit sets up on the platform on gearbox right side, installs the walking controller of control wagon on the platform of main control unit rear side. This wagon simple structure, low in manufacturing cost, operation are reliable. Can independently detect and need not the manual operation, mend the continuity that the streamlined production in time can ...

Gas sample thief with watertight fittings

The utility model relates to a fire damp check out test set specifically is a gas sample thief with watertight fittings, including gas sample thief (1), waterproof unit (3) are connected in leather hose end (2) of gas sample thief (1), waterproof unit (3) are including one cylindrical barrel (4), the both ends difference seal installation end cover (5) of cylindrical barrel (4), leather hose end (2) of gas sample thief (1) are connected to an end cover, and drilling leather hose (7) is connected to another end cover, allochroic silica gel (6) have been put in the cylindrical barrel. The utility model relates to a rationally, it has stopped the loss that gas inspection instrument results in because of intaking basically to install watertight fittings additional on the gas sample thief to haplopore gas density's measurement accuracy has been improved.

Method for obtaining topological relation of LTU through TTU

The invention discloses a method for obtaining a topological relation of LTUs through a TTU, and the method comprises the steps: carrying out the time correction of all LTUs through the TTU, enabling each LTU to transmit a feature signal one by one according to an instruction of the TTU, collecting the time when each LTU recognizes the feature signal, and carrying out the reasoning of the number of recognized feature signals, and obtaining the topological relation of the LTUs under the TTU. Therefore, according to the method for obtaining the topological relation of the LTU through the TTU, the topological relation of the LTU can be obtained through reasoning only by using the time when the LTU recognizes the characteristic signals, extra information is not needed, and implementation and updating are facilitated.

Industrial process for preparing nm-class active calcium carbonate

The invention provides the industrial preparation method of the nano activated calcium carbonate. The crystal control agent is added in the suspending liquid of the calcium hydroxide and is carbonized by the kiln gas containing the carbon dioxide. Through controlling the temperature and concentration of the calcium hydroxide, the concentration of the carbon dioxide and the addition and variety of the crystal control agent, the initial nucleation rate and nucleation quantity of the crystal and the growth rate of each crystal face of the crystal during carbonization are adjusted to realize the shape control of the crystal, and then surfactant is added to conduct activating treatment. The nano activated calcium carbonate is gained after filtering and drying, which has a shape of cube and is regulable when the grain size is between 20nm to 100nm. The product gained by the method has excellent performance and can work as the functional filler, which can be widely used in such industries as top-grade ...