70results about How to "Fast pumping speed" patented technology

The invention discloses an automatic medical examination blood smear dyeing machine. According to the invention, a substrate is fixed at the upper part of a frame; a test tube conveyer is arranged in the frame; a test tube suction unit is arranged at the upper part of the substrate; a slide glass conveyer is arranged on the substrate; a sample smearing unit is connected with the slide glass conveyer; a dyeing device is connected with a sample picture device; a controlling unit is arranged on the substrate; a cleaning device is arranged on the test tube suction unit; a waste liquid gathering device is arranged at the lower part of the test tube suction unit; a printing unit is arranged on the substrate; and a network transmission unit is arranged in the controlling unit. The automatic medical examination blood smear dyeing machine can automatically complete operations like uniform mixing and sampling of a blood sample, automatically realizes cleaning via the cleaning device and overcomes the problems of great labor intensity, low detection efficiency, difficulty in guaranteeing smear dyeing quality and the like due to manual or partially machine-aided implementation of the operations in conventional medical examination mechanisms.

The invention relates to fuel cell metal polar plate vacuum coating flow-line equipment and a coating method thereof. The flow-line equipment comprises a vacuum cavity set, a support, a transmission mechanism and a PLC control system, wherein the vacuum cavity set comprises a furnace-entering cavity, a front processing cavity, a first coating cavity, a second coating cavity, a back processing cavity and a furnace-outing cavity which are sequentially connected in a sealed mode and mutually independent, a heating device and an ion source device are arranged in the front processing cavity, the first coating cavity is used for depositing an element layer of a bottom layer for the fuel cell metal polar plate, the second coating cavity is used for depositing a corrosion resistant conductive coating for the fuel cell metal polar plate, and an independent vacuum pump is arranged in each cavity; the support is used for arranging the to-be-handled fuel cell metal polar plate; and the transmission mechanism comprises a flow-line guide rail which sequentially penetrates through the cavities in the vacuum cavity set and a power assembly driving the support to move along the flow-line guide rail. Compared with the prior art, the flow-line equipment is extractive and simple in structure, convenient to install, reliable in maintenance, high in production efficiency and the like.

The invention relates to a composite inhibitor of natural gas hydrate. The composite inhibitor is prepared from 0.5 to 2 parts of a kinetic inhibitor, 0 to 15 parts of a thermodynamic inhibitor, 0.5 to 1.5 parts of an anti-agglomeration agent and 81.5 to 99 parts of a matrix. The inhibitor provided by the invention is used in a compounding manner, small in adding amount and good in economical efficiency; temperature and pressure of generating the hydrate can be effectively reduced; in a utilization process, the composite inhibitor is convenient to prepare on site, a pumping speed is repid and precious working time is saved; the inhibitor has relatively low surface tension and rapid backflow of residual liquid after working is finished is convenient to realize; the inhibitor can be matched with an anti-swelling agent and the aim of stabilizing a stratum is realized; the inhibitor can also be matched with quick water, so that the inhibitor has dual effect and does not need to work independently, and a lot of human and material resources can be saved.

The invention discloses an intra-tower pump suction type high vacuum distillation method and device for precise separation of C16-C22 fatty acids. The high vacuum distillation method comprises the following steps: firstly taking heat sensitive materials with a high additional value, such as animal and vegetable oil, as raw materials, adopting plasma liquid and the like as an esterification and transesterification catalyst, and obtaining mixture of multiple fatty acid methyl esters with high yield in one step; secondly, in a distillation tower with almost zero pressure drop, carrying out high vacuum distillation operation on the formed multiple fatty acid methyl esters through catalysis; and finally separating and purifying, so that single fatty acid methyl esters such as timnodonic acid methyl ester, docosahexoenoic acid methyl ester, methyl palmitate, methyl stearate, methyl oleate and methyl linoleate with the mass fraction more than 98% respectively are obtained. The whole technological method is simple and clear, the operation is simple, the equipment cost is low, the energy is saved, and the enlargement can be easily realized.

The invention relates to a pedal type water pump which is characterized by comprising a pedal pressing plate, wherein the tail end of the pedal pressing plate is connected with a piston; the piston is positioned in a water pumping cylinder and tightly abutted with the inner wall of the water pumping cylinder; the other side of the piston is connected with a compression spring; a water inlet and a water outlet are respectively arranged on the water pumping cylinder; an inward one-way valve is arranged on the water inlet; an outward one-way valve is arranged on the water outlet; and a water inlet pipe and a water outlet pipe are respectively connected with the outside of the water inlet and the water outlet. When the pedal pressing plate of the pedal type water pump of the invention is stepped down, water in the water pumping cylinder can be pressed out, and the piston is ejected by the elasticity of the compression spring and the water can be pumped when the feet are moved away. Also, the pedal pressing plate can be pulled to improve the water pumping rate. The invention has simple use, can be used in places without a power supply, saves electricity and energy, and is suitable for outdoor use.

The present invention is one kind of multifunctional hydraulic oil extracting apparatus for nonflowing well without oil pumping unit. The multifunctional hydraulic oil extracting apparatus consists of a voltage regulating cabinet, a motor, a high pressure pump, a high pressure pipeline, a high temperature heating furnace and a filter. Inside the well, there are casing, oil pipe, polished rod sealer, hollow sucker rod, and hydraulic oil extracting pump. High pressure liquid is provided from ground to well for the hydraulic oil extracting pump to operate continuously to make liquid inside the well to flow to ground. The apparatus has integrated functions of extracting oil, electrically heating, relieving oil and exhausting sand, and possesses small floor space, low power consumption, low maintenance cost and high oil pumping efficiency, so that it may be used widely in extracting thick oil from horizontal well and cluster wells.

The invention relates to a shaft coal uncovering method via a radial technology, and belongs to the field of coalbed gas exploitation. A radio hole is constructed towards the shaft by well drilling inthe ground, directed fracturing is carried out by using a guiding effect of the radial hole, the extension range of a fractured crack is expanded to the largest degree, and the permeability of a coalbed surrounding the shaft is improved. In the construction process, the ground vertical hole is constructed within the range of 100m in the surrounding of the shaft, and the radial well is constructedtowards the shaft along the radial direction. Radial branches are constructed towards the shaft by using the existing ground hole, the fracturing technology is then combined, and the influential range of the fracturing crack is widened by using the guiding effect of the radial branches. The well is constructed, the radial well technology is efficiently combined with the fracturing technology andused for rapid coal uncovering in the shaft, the engineering amount of down-hole drilling is reduced, the coal mine gas extraction speed is improved greatly, coal uncovering time of the mine is shortened, the risk of danger is reduced, and rapid and safe coal uncovering is ensured.

The invention provides a free hydrocarbon and soil sample collecting device and a collecting method. The free hydrocarbon and soil sample collecting device comprises a hollow drill pipe and a helix slice; the pipe body outer wall of the hollow drill pipe is wound with the helix slice in a helical manner, and the helix slice is extended to the bottom of the hollow drill pipe; the bottom of the hollow drill pipe is connected with a double-wing drill; the upper part and the lower part of the pipe body outer wall of the hollow drill pipe are provided with an air extraction opening and an air inlet port; a capillary is arranged in a hollow cavity of the hollow drill pipe; and the air extraction opening and the air inlet port are communicated via the capillary. According to the free hydrocarbon and soil sample collecting device, a power head is used for driving a whole helix drill pipe to drill; drilling power is large, speed is high, and free hydrocarbon gas of soil 3 meters deep or deeper under the ground can be obtained; the double-wing drill and the helix slice are combined, soil samples of a same depth can be obtained in drilling processes, metal capillary state is more stable, and it is beneficial for obtaining of high-quality free hydrocarbon gas samples.

The application discloses a method and a device for controlling an oxygen concentration of an optical fiber curing oven, wherein the device comprises a first nitrogen tube, a second nitrogen tube, a third nitrogen tube and a gas exhausting tube, three flow meters, a wind speed measuring instrument, an oxygen concentration measuring instrument and a controller, wherein the first nitrogen tube is communicated with an upper joint; the second nitrogen tube is communicated with a lower joint; the third nitrogen tube and the gas exhausting tube are arranged on the two joints respectively; the three flow meters are arranged on the corresponding nitrogen tubes respectively; the wind speed measuring instrument is used for measuring the flow speed of a gas in the gas exhausting tube; the oxygen concentration measuring instrument is used for measuring the concentration of oxygen in the gas exhausting tube; the controller is electrically connected with the three flow meters, a downdraught fan, the wind speed measuring instrument and the oxygen concentration measuring instrument, and is used for controlling each flow meter and the downdraught fan to work according to signals fed back by the oxygen concentration measuring instrument and the wind speed measuring instrument. By using the method and the device, the oxygen concentration can be automatically detected; each flow meter and the downdraught fan can be controlled to work accruing to the oxygen concentration; thus, the oxygen concentration in a quartz tube is enabled to be in a set range.

The invention discloses a jamming prevention oil field oil pump, in particular to a jamming prevention oil field oil pump provided with an upper scraping unchoking device. The problem that an oil pumpis jammed or halts is solved. According to the technical scheme of the jamming prevention oil field oil pump, on the structural basis of an existing common oil pump, the upper scraping unchoking device capable of scraping sand is arranged between an upper traveling ball cover and an upper traveling valve connector so that sand grains in crude oil above a plunger cannot enter the position betweenthe plunger and a pump barrel, the problems of jamming and halt, caused by deposited sand grains in the crude oil, of the oil pump are effectively and completely eradicated, the plunger and the pump barrel can be protected, the effect of prolonging the service life is achieved, and the purposes that less faults are caused, and the efficiency of oil extraction is improved are achieved.

The invention discloses a linkage balance beam-pumping unit, and belongs to the field of an oil production technique device, and especially relates to a linkage balance beam-pumping unit consisting of a slider-crank mechanism. The linkage balance beam-pumping unit is mainly composed of an asynchronous motor, a stand, a walking beam, a horse head, a left double-slider, a left double-linkage, a dual-axis motor, a dual-crank, a right double-linkage, a right double-slider, a reducer, a balancing weight block, a crank, and a base. The technical scheme is that the dual-axis motor is fixedly installed on the walking beam, and the output shaft of the motor is linked with the front end of the double-crank, and the other end of the double-crank is linked with the left and right double-linkages through a pin shaft; tail ends of the left and right double-linkages are equipped with the left and right double-sliders through the pin shaft, and the lower end of the slide block is provided with a roll wheel. The edge of the moving beam is welded with the side plate form a slide way; the left and right double-sliders are installed in the slide way, and the slide blocks are pushed to perform reciprocal rectilinear motion by the left and right double-linkages along with the length direction of the moving beam. The linkage balance beam-pumping unit is simple in structure, safe and reliable in use, and can adjust the balancing moment of the moving beam along with the change of the load at the suspending point of the pumping unit, thus the energy-saving and cost-reducing purpose is reached.

The invention relates to a tube type sand scraping oil well pump, in particular to a tube type sand scraping oil well pump with an upper scraping through device. The problem that an oil well pump is stuck and halted is solved. According to the technical scheme, the upper scraping through device which can scrape sand is arranged between an upper travelling spherical cover and an upper travelling valve connector on the basis of an existing conventional oil well pump structure, and therefore sand in crude oil on the upper portion of a plunger cannot enter the space between the plunger and a pumpbarrel, the problem that due to the fact that the sand in the crude oil is precipitated, the oil well pump is stuck and halted is effectively solved, the plunger and the pump barrel can be protected,the effect of prolonging the service life is achieved, and the purposes of reducing the faults and improving the oil extraction efficiency are achieved.

The invention discloses a mass spectrometer leak detection method, comprising the following steps of: S10, performing empty box leak detection on the sealed vacuum cavity; S101, correcting the leak rate obtained after the leak detection; S11, placing a box to be tested in the containing cavity of the vacuum cavity; S12, controlling a fore pump to pump the gas of the containing cavity of the vacuumcavity; S13, controlling the fore pump to drive a cavity vacuum pump to simultaneously pump the gas of the containing cavity; and S14, controlling the tracer gas source to charge the box to be testedwith the tracer gas, and detecting the tracer gas content in the containing cavity by the mass spectrometer leak detection device, and determining whether the box to be tested meets a preset condition according to the tracer gas content. The mass spectrometer leak detection method has the advantages of high detection efficiency and high accuracy.

The invention discloses an energy-saving drying room for fine dried noodles. The energy-saving drying room for the fine dried noodles comprises a heat collecting plate, a photovoltaic panel, a bracket, a rotating shaft, a support rod, a heat exchanger, an air pump, a photoelectric converter, a drying room, an U-shaped pipe, through holes, an air blower, a dehumidifying box, an exhaust hole and a door panel; heat energy in sunlight is collected by using the heat collecting plate; light energy is collected by using the photovoltaic panel; the heat in the heat collecting plate is transferred to the U-shaped pipe at the lower end by using the heat exchanger; the light energy is converted to electric energy by using the photoelectric converter; an air blowing port of the air blower is fixedly connected with the through holes at the lower end of the U-shaped pipe to achieve the purpose of blowing air into the U-shaped pipe; multiple through holes are formed in the U-shaped pipe; the U-shapedpipe is heated by the heat exchanger to dry the fine dried noodles in different positions; hot air with moisture is removed by using the exhaust hole at the upper end of the outer side of the dryingroom; and the dehumidifying box is mounted at the lower end of the U-shaped rod to absorb the moisture in the drying room.

The invention discloses an in-tower pumping-type high vacuum distillation method and device for separation of heat sensitive oil. The method uses oil rich in high added value heat sensitive material as the raw material, and uses acid, alkali or ionic liquid as a catalyst; the heat sensitive oil is pretreated to obtain a mixture of a plurality of fatty acid methyl esters; by in-tower pumping-type high vacuum technology effectively controls the pressure drop in the tower, so as to finely divide the mixture of the plurality of fatty acid methyl esters; the fatty acid methyl esters are respectively purified to obtain methyl stearate, methyl oleate, methyl linoleate, methyl linolenate, methyl arachidonate and erucic acid methyl ester single component heat sensitive material with mass percent higher than 98%. The method is energy-saving, simple for operation and easy for enlargement.

The invention discloses a machine tool lubricating oil circulating device which is used for performing dynamic circulation on lubricating oil in a lubricating oil tank of a machine tool and comprises an oil-well pump, an oil delivery pump, an oil storage tank, an oil mass detector, a temperature detector and a control device, wherein an oil inlet of the oil-well pump is communicated with a pipeline of the lubricating oil tank, and an oil outlet of the oil-well pump is communicated with a pipeline of the oil storage tank; an oil inlet of the oil delivery pump is communicated with a pipeline of the oil storage tank, and an oil outlet of the oil delivery pump is communicated with a pipeline of the lubricating oil tank; the lubricating oil tank, the oil-well pump, the oil storage tank and the oil delivery pump constitute a lubricating oil dynamic circulation loop; the temperature detector is mounted on the lubricating oil dynamic circulation loop; the oil mass detector is mounted in the lubricating oil tank; the control device is in communicating connection with the oil-well pump, the oil delivery pump, the oil mass detector and the temperature detector; the temperature detector is used for detecting temperature of the lubricating oil; the oil mass detector is used for detecting oil mass in the lubricating oil tank; the control device obtains the oil mass information and the lubricating oil temperature information in the lubricating oil tank through the oil mass detector and the temperature detector.

The invention discloses a vortex self-cleaning oil well pump which comprises a plunger assembly, a pump cylinder assembly, a vortex rotary lifting device and a rotational flow fixing valve assembly. The vortex rotary lifting device comprises a rotor, a stator, a compression spring, a guiding cylinder, an upper straightening block and a lower straightening block. The rotational flow fixing valve assembly comprises a rotational flow guiding cylinder, a fixing valve cover, a fixing valve and a fixing valve seat. The pump cylinder assembly comprises a pump cylinder and a pump cylinder coupling. The pump cylinder coupling is connected with a lengthened short joint. The vortex rotary lifting device is arranged in the lengthened short joint. The stator is connected with the rotational flow guiding cylinder through a stator connector. The lower straightening block is arranged on the stator in a sleeving manner and is located through a locking nut. The upper end of the locking nut is sleeved with a spring seat and the compression spring. The upper end of the guiding cylinder is sequentially connected with the rotor, the upper straightening block and a stop nut. The rotational flow fixing valve assembly is arranged at the lower end of the lengthened short joint and is connected with the lower end of the coupling through the upper end of the fixing valve cover. Vortex is generated in a pump cavity, impurities which are sucked in are carried out of the oil well pump, the pump cavity is cleaned, impurities are prevented from being deposited in the fixing valve, the overhaul period is prolonged, and production efficiency is improved.

The invention discloses a water ring vacuum pump connecting structure, and relates to the technical field of vacuum pumps. The water ring vacuum pump connecting structure comprises a pump cover, a distributing plate and a pump body, the pump cover is connected with the pump body by the aid of a flange, a first positioning spigot is formed in the pump cover, a second positioning spigot is formed in one end, close to the pump cover, of the pump body, and the distributing plate is placed in a cavity formed by the first positioning spigot and the second positioning spigot. The water ring vacuum pump connecting structure solves the problem that a past water ring vacuum pump pull-rod connecting structure is inconvenient to detach and reassemble.

The invention discloses a low-water-level inverted siphon precipitation vacuum and surcharge united preloading reinforcement deep soft foundation system. The low-water-level inverted siphon precipitation vacuum and surcharge united preloading reinforcement deep soft foundation system comprises a soft soil foundation, a surcharge, plastic drainage boards, water absorption pipelines, precipitation wells, a filter cloth, a sand bed, a sealing film, a vacuum pump, a water drawing pit, a water drawing box and a centrifugal pump. According to the low-water-level inverted siphon precipitation, vacuumand surcharge united preloading reinforcement deep soft foundation system disclosed by the invention, a low-water-level inverted siphon precipitation vacuum and surcharge united preloading reinforcement deep soft foundation method is adopted, a low-water-level design idea of the vacuum water drawing box is provided, an idea of inverted siphon is combined to enable the zero point of the water level of the system to move downwards, so that the underground water level of the reinforcement site is effectively reduced; the inverted siphon effect is formed between the precipitation wells and the water drawing box, so that the underground water level of the site is reduced by the system, and vacuum pressure of lied soft soil can also be substantially increased; the ground stabilization to the deep soft soil is greatly improved by the processing method, duration can be shortened, and construction maintenance cost is reduced; and the method is simple in technology, and convenient to implement,and can be used for practical engineering.

The invention discloses an oil-well pump energy-storage enhancing device capable of compressing natural gas automatically. The oil-well pump energy-storage enhancing device capable of compressing the natural gas automatically comprises an upper connector, an inner pipe, an outer pipe and a lower connector, wherein the upper connector is connected with an oil-well pump, and the lower connector is connected with a tail pipe. The oil-well pump energy-storage enhancing device capable of compressing the natural gas automatically is characterized in that the inner pipe and the outer pipe which are coaxial form an annular space with the sealed upper portion and the communicated lower portion, the annular space serves as a storage space of the natural gas separated from crude oil and an energy-storage and energy-release space for compression and expansion of the natural gas, and gas pressure-limitation holes with certain quantity and inner diameter are formed at the lower portion of the outer pipe and serve as a discharging passageway for residual gas in annular spaces of the inner pipe and the outer pipe. The oil-well pump energy-storage enhancing device capable of compressing the natural gas automatically is simple in structure, free of any moving component, stable, reliable, convenient to construct on site, and environment-friendly, and does not pollute the environment and an oil layer. The natural gas is compressed automatically as an energy-storage method, additional power is not needed, the problem of the service life in the energy-storage process of a compression spring is resolved at the same time, and the practicality is strong. The oil-well pump energy-storage enhancing device has a function as a gas anchor, is capable of preventing separated gas from entering the pump, and reduces the influence on pump efficiency when the gas enters the pump.

The invention discloses a vacuum exhaust device for a discharge barrel of a waste plastic recycling and granulating line. The device comprises an exhaust cover arranged on the discharge barrel; the exhaust cover comprises an exhaust cover body and a cover plate; the exhaust cover body comprises a cavity and a plate edge on the upper edge of the cavity and capable of cooperating with the cover plate; the cavity communicates with an inner cavity of the discharge barrel; the cover plate is fixed on the plate edge; an air channel is formed between the cover plate and the plate edge; the bottom of the plate edge or the top of the cover plate is provided with a vacuumizing port; and one end of the vacuumizing port is connected with the air channel, and the other end of the vacuumizing port is connected with a vacuumizing device. During working, the materials pass through the cavity and are blocked by the cover plate; the air channel facilitates air flow, and the vacuumizing port is located at the bottom of the plate edge or the top of the cover plate, then during vacuumizing, the vacuumizing port will not be blocked by materials, so as to realize more smooth air flow and high pumping speed, and expand production capacity.

The invention discloses vacuum tube side pressure type exhaust equipment. The vacuum tube side pressure type exhaust equipment structurally comprises an air pump, a connecting pipe and an exhaust pipe, the bottom end of the connecting pipe is perpendicularly fixed to the top, close to the left end, of the air pump, the exhaust pipe is located on the right side of the connecting pipe, due to the fact that the opening end of a vacuum tube falls on the top of the air pump rapidly downwards, a buffer mechanism is arranged outside the connecting tube in a sleeved mode, a stress plate moves downwards along with the vacuum tube to buffer the vacuum tube, so that the impact force between the opening end of the vacuum tube and the top of the air pump can be reduced, the phenomenon that the opening end of the vacuum tube is broken is reduced, normal use of the vacuum tube is facilitated, due to the fact that the thickness of the vacuum tube is different, the external air flow easily enters the vacuum tube along the gap between the vacuum tube and a movable groove, a clamping plate of a clamping mechanism is in contact with the outer wall of the vacuum tube, the external air flow can be reduced to enter the vacuum tube along the gap between the movable groove and the vacuum tube, and the air pumping speed of an air exhauster to the vacuum tube can be accelerated.

The invention discloses a water pressure regulation and control automatic coupling type submersible pump which comprises a driving motor, a pump body, a water outlet pipe, a supporting seat and a water inlet mechanism, and has the beneficial effects that a blocking piece is suspended in a limiting conical head under the action of self buoyancy, and at the moment, the submersible pump can pump water at the position higher than the water bottom, maximized water output is achieved, and the working efficiency of the submersible pump is further improved, the blocking piece begins to move towards a groove due to the gravity of the blocking piece, a sealing sleeve is matched with the groove under the suction force of the submersible pump, the sealing effect is achieved, meanwhile, the downward water pressure borne by the sealing head is reduced, the suction force, of the submersible pump, borne by sealing head is increased, and finally, the suction force of the submersible pump is larger than the magnetic attraction force of an upper attraction piece and a lower attraction piece plus the water pressure of 0.5 m, the sealing head is separated from a third sealing ring, then water is pumped from the water bottom, the whole submersible pump can pump water quickly to the maximum extent when the water is deep and can further pump water at the shallow water depth, full-automatic adjustment is achieved, and the use convenience is high.

Disclosed are an oil field oil pump sand scraping device and a manufacturing method thereof. According to the technical scheme, the oil field oil pump sand scraping device with a sand scraping function is designed and located between an upper travelling ball cover and an upper travelling valve joint of an oil-well pump, so that sand grains in crude oil do not enter the position between a plunger and a pump barrel; the oil field oil pump sand scraping device is composed of a sand hole straight-through joint and a scraper ring; the sand hole straight-through joint is of a tubular straight through structure, and an upper end opening of the sand hole straight-through joint is provided with an upper screw opening, a lower end opening of the sand hole straight-through joint is provided with a lower screw opening, a cutter groove is formed in the middle of the sand hole straight-through joint, and a sand return hole is formed in the cutter groove; the scraper ring is in a circular-ring shapeand provided with a cutter ring seam, so that a ring opening is enlarged conveniently during mounting; and the section of an annular reinforcement is prismatic, the inner diameter wall is low and theouter diameter wall is high, and two cutter edges are formed on the upper portion and the lower portion of the annular reinforcement. The oil field oil pump sand scraping device has the beneficial effects that the problem that the oil field oil pump sand scraping device is jammed and crashed due to precipitation of the sand grains in the crude oil in an upper opening of the plunger of the oil-wellpump can be solved, and the working efficiency of the oil-well pump is improved.

The invention discloses a vacuum preservation box air pumping valve, which is arranged on a preservation box and comprises a valve body, an air bleeder, a valve seat and a valve cover, wherein the air bleeder and the valve seat are nested inside the valve body and are connected through screw threads, the valve cover is screwed and connected with the top end of the valve body, a reverse T-shaped pull rod is arranged on the air bleeder, the valve cover is sheathed on a pull rod, the bottom of the pull rod is movably matched with the inner wall of the air discharge valve embedded with a valve core, an open hole used for air circulation is arranged on the pull rod, and the top end of the pull rod passes through the valve cover and is connected onto the press cover and the handle. The vacuum preservation box air pumping valve has the advantages that the structure is simple, the operation is convenient, the air pumping process can be realized through lifting the handle to drive the pull rod, the air release can be realized through directly screwing the valve cover, the time and the labor are saved, the air pumping speed is high, the vacuum preservation box air pumping valve is suitable for being bought by ordinary customers, and the popularization performance is high.

The invention provides an upward scraping device for an oilfield oil pump and a manufacturing method thereof. According to the technical scheme, the upward scraping device for the oilfield oil pump isdesigned and used for scraping sand. The device is arranged between an upstream movable spherical cover and an upstream movable valve joint of the oil pump; stand in crude oil cannot enter between aplunger piston and a pump barrel through the device. The device comprises a sand hole through joint and a scraping cutter ring, wherein the sand hole through joint is in a tubular through form; an upper end port of the sand hole through joint is provided with an upper screw port; a lower end port of the sand hole through joint is provided with a lower screw port; a cutter groove is formed in the middle part of the sand hole through joint, and a sand returning hole is formed in the cutter groove; the scraping cutter ring is annular and is provided with a cutter ring seam, and a ring opening canbe conveniently expanded during mounting; the sections of ring ribs are prismatic; the inside diameter walls of the ring ribs are low, and the outside diameter walls of the ring ribs are high; two blades are formed in the top parts and the bottom parts of the ring ribs. The device has the beneficial effects that the problem of locking and halting caused by sand deposition in crude oil in an upperport of a plunger piston of the oil pump can be solved, and thus the working efficiency of the oil pump can be improved.