84results about How to "Avoid backflow situations" patented technology

The invention provides an enhanced vapor injection heat pump air condition system, a control method, a control device and an air conditioner. The enhanced vapor injection heat pump air condition system comprises a compressor, a reversing assembly, an outdoor heat exchanger, a first heat exchanger, a first electromagnetic valve, a second heat exchanger, a second electromagnetic valve and a gas-liquid separator, wherein the compressor comprises an exhaust port, a jet port and gas return port; the reversing assembly comprises a first valve port, a second valve port, a third valve port and a fourth valve port; the first heat exchanger comprises a first heat exchange flow path and a second heat exchange flow path; the second exchanger comprises a third heat exchange flow path and a fourth heat exchange flow path, the first end of the third heat exchange flow path is connected to the second end of the second heat exchange flow path, the second end of the third heat exchange flow path is connected to the second end of the first electromagnetic valve, the first end of the fourth heat exchange flow path and the third valve port of the reversing assembly are both connected to the first end of the second electromagnetic valve; and the second end of the second electromagnetic valve is connected to the first end of the first heat exchange flow path. By the adoption of the technical scheme, wet operation of the compressor during defrosting of the air conditioner can be avoided.

The invention relates to waste gas treatment equipment and method and belongs to the field of environmental protection equipment. The waste gas treatment equipment comprises an activated carbon adsorption box, a spray tower and a circulating water tank, wherein the activated carbon adsorption box and the circulating water tank are both communicated with the spray tower; the activated carbon adsorption box comprises a box body, an adsorption plate, a limiting device, a positioning device and a driving device; the limiting device is mounted in the box body; the adsorption plate is mounted on thelimiting device; the positioning device is in contact with the adsorption plate; the driving device is connected with the adsorption plate; the spray tower comprises a spray tower device, a sprayingdevice and a cyclone device; the spraying device and the cyclone device are both mounted in the spray tower device; the spraying device is positioned above the cyclone device; the circulating water tank comprises a circulating water tank device, a sludge conveying device, a blow-down apparatus and a water supply device; all the sludge conveying device, the blow-down apparatus and the water supplydevice communicate with the circulating water tank device; and both the box body and the sludge conveying device communicate with the spray tower device. The working efficiency is improved, and the waste gas treatment is complete.

The invention discloses an EGR pipe and an EGR system, and relates to the technical field of engines. The EGR pipe comprises a three-way pipe and a switching valve internally arranged at the pipe intersection position of the three-way pipe, the switching valve comprises a pulling sheet, one end of the pulling sheet is provided with a rotating shaft, the rotating shaft is rotationally arranged at the intersection position of two gas inlet branches, the shape of the pulling sheet is the same as the shape of the cross section of a pipe body of the three-way pipe. According to the EGR pipe, in themanners that the switching valve is arranged at the pipe intersection position of the three-way pipe and the shape of the pulling sheet is the same as the shape of the cross section of the three-waypipe, the switching valve can achieve free rotation through the two waste gas inlet branches, free switching of the switching valve at the positions of the waste gas inlet branches is achieved, and the condition of waste gas backflow of the two waste gas inlet branches is avoided, and the problem that an existing engine exhaust pipe EGR system cannot obtain the high EGR efficiency is solved.

The invention provides a gas supplementing device and method for environment-friendly insulated electrical equipment. The device comprises a C4F7N gas cylinder, a buffer gas cylinder, an inflation gaspipe, ball valves, a one-way electromagnetic valve, a temperature sensor, a pressure sensor, a density sensor, a gas mixing tank and a control processing device, and is an intelligent inflation device for novel environment-friendly gas in application. The problem of the amount of gas required in the gas inflating and supplementing process of the equipment can be solved. The temperature sensor, the pressure sensor and the density sensor are arranged in the gas insulated electrical equipment, the quantity of C4F7N and buffer gas which need to be supplemented is determined according to the temperature, pressure and gas density parameters respectively collected by the three sensors, the corresponding ball valves are opened to complete the gas supplementing operation, remote control can be realized, safe operation is guaranteed, and meanwhile the operation cost is reduced.

The invention discloses a manned multi-rotor flying vehicle. The manned multi-rotor flying vehicle comprises a frame, wherein a fixed machine arm is arranged in front of or directly behind the frame;one or more tilting machine arms are symmetrically and rotationally arranged on two sides of the frame; the tail ends of the fixed machine arm and each tilting machine arm are fixedly provided with apower assembly respectively; a rotor is mounted on the power assembly; the tilting assemblies are arranged between the frame and each tilting machine arm, and are used for driving the tilting machinearm to rotate so as to adjust the inclination of the rotor on the tilting machine arm along the front-back direction of the frame. The manned multi-rotor flying vehicle provided by the invention has the advantages of simple structure, safety and comfort, simple and convenient control, long cruise range and the like.

The invention discloses a hydrops drainage device for the cardiovascular medicine department. The device comprises a base, a vacuum aspiration pump is arranged at the top of the base, and a first hydrops drawing pipe is arranged on one side of the vacuum aspiration pump; a main hydrops collection bottle is arranged at the top of the vacuum aspiration pump, the first hydrops drawing pipe penetratesthrough the top of the main hydrops collection bottle and extends to the inner side of the main hydrops collection bottle, and an air pipe is arranged on one side of the first hydrops drawing pipe; asuction bottle is arranged at the bottom of the air pipe, a filtering layer is arranged on the inner side of the suction bottle, and the bottom end of the suction bottle is connected with a bottom air pipe; a suction disc is arranged at the bottom of the bottom air pipe, a slide sleeve is arranged on one side of the base, and the bottom air pipe penetrates through the inner side of the slide sleeve. The hydrops drainage device is provided with an auxiliary hydrops collection bottle, a second hydrops drawing pipe and the main hydrops collection bottle, and the problems that when the hydrops drainage device is in use, backflow of hydrops is inevitably caused, and the using safety of the hydrops drainage device is influenced are solved.

The invention discloses a high-flow pulsating electromagnetic blood pump, which comprises a mounting bracket. At least two magnetic pushing devices mounted on the support surface, the magnetic pushingdevices comprising a drive coil, a permanent magnet piston, a two-way joint, an inner bag and a magnetic shielding cylinder; At least one set of linkage assemblies for linkage of permanent magnet pistons in two of the magnetic propulsion devices of the same set reciprocating alternately; A processor for controlling a control circuit of the driving coil by a set rhythm or according to an electrocardiogram signal of a human body surface; And an electrocardiogram electrode for detecting and transmitting a body surface electrocardiogram signal of the human body to the processor. The invention integrates a plurality of magnetic pushing devices and is linked by the linkage components in two groups, thereby effectively reducing heat generation, increasing the power of the whole machine in multiple, simultaneously increasing the flow rate, and effectively improving the working condition. It can also be controlled according to extracorporeal electrocardiogram signals, which can avoid increasing the afterload of myocardium in systolic phase.

The invention relates to a cooling and energy-saving device for a vehicle hear-generating member. The device comprises a container (1) and a radiator (2), wherein the container (1) accommodates cooling medium and exchanges heat with the heat-generating member, and is provided with a gas outlet (11) and a liquid inlet (12); and the radiator (2) which cools the gaseous cooling medium discharged form the gas outlet (11) into liquid cooling medium is arranged on a pipeline that communicates the gas outlet (11) with the liquid inlet (12). Through the adoption of the technical scheme, not only the speed changer is ensured to work at the optimum temperature but also the discharge of harmful substances is reduced, and further electrical energy can be supplied for the operation of vehicles.

The invention discloses a die-casting machine used for industrial processing. The die-casting machine comprises a supporting plate, wherein the left side of the top of the supporting plate is fixedly equipped with a first fixed plate; a first hydraulic tank is fixedly mounted on the left side surface of the first fixed plate; a first hydraulic rod is fixedly mounted on the right side surface of the first fixed plate; the right side of the first fixed plate is equipped with a movable molding board; one end, away from the first fixed plate, of the first hydraulic rod is fixedly connected with the movable molding board; a movable module is fixedly mounted on the right side surface of the movable molding board; first slide slots are formed in the two sides of the upper surface of the supporting plate; and the first slide slots are in sliding connection with the movable molding board through first slide blocks arranged inside the first slide slots. According to the die-casting machine disclosed by the invention, a cooling room is arranged inside the movable molding board, so that raw materials are promoted to form in a processing process, and cooling time can be shortened, and therefore, working efficiency can be improved; and moreover, the hydraulic rod is utilized to control movement of the movable molding board, so that use is more labor-saving, and processing precision is high.

The invention discloses a self-generating ozone generation faucet which comprises a self-generating ozone generator and a water outlet pipe. The self-generating ozone generator comprises a shell, a water channel, a water flow generator and an ozone generator, wherein the water channel, the water flow generator and the ozone generator are arranged in the shell, the shell is provided with a water inlet, a water outlet and an ozone outlet, the water inlet and the water outlet are respectively connected with both ends of the water channel, the turbine end of the water flow generator is arranged in the water channel, the output end of the water flow generator is connected with the ozone generator, the output end of the ozone generator is connected to the ozone outlet, a water outlet pipe is connected with the water outlet and is provided with a section of branch pipe for supplying ozone, and the ozone outlet is connected with the branch pipe through a gas transmission pipe. In the invention, the effluent has favorable sterilization effect, and the self-generating ozone generator can also normally work without external power supply, thereby reducing the installation difficulty of the product and lowering the cost. The invention has the advantages of convenient installation and maintenance.

The invention discloses an easy pouring and splash-proof smelting furnace. The easy pouring and splash-proof smelting furnace includes a base; the front and rear sides of the base are fixedly providedwith vertical plates; a furnace body is arranged between the two vertical plates; rotating rods are arranged among the front and rear sides of the furnace body and the vertical plates; the furnace body is rotatably connected to the vertical plates through the rotating rods; one side of the vertical plate is provided with a turning mechanism; the side of the vertical plate away from the turning mechanism is provided with a splash-proof mechanism; and the turning mechanism includes a first gear. According to the invention, the rotation of a shaft is driven by the rotation of the output end of amotor, so as to realize the rotation of the furnace body and tilt the furnace body to the direction of a buffer barrel to complete pouring, which is safe and fast; and furthermore, through the interaction of a limiting plate, a drainage column, a flow limiting sheet, a buffer net, a U-shaped frame, a barbed sheet and a baffle during the pouring, the poured liquid can fall into the buffer barrel smoothly, which effectively avoids the phenomenon of splashing of molten metal and the phenomenon of waste caused by the sliding of molten metal along the furnace wall.

The invention relates to the technical field of atomization dust removal, and discloses a cradle head spraying device for dry fog dust suppression. Springs are compressed to elastically deform and their elastic force is equal to the internal air pressure, the air pressure acts on clamping strips to make the clamping strips disengaged from clamping holes and make spraying units move under the action of the pressure intensity, high-pressure gas can enter connecting sleeves through opening and closing holes, water in the spraying units is atomized and sprayed out from nozzles, and in the process,the air pressure must be enough to push pressure storage devices to reach preset positions for disengaging the clamping strips from the clamping holes and to enter the spraying units to atomize water, so that the air pressure can reach a constant value before each time of atomization, and the problem that the atomization effect and the dust removal effect are reduced since a single compressed airdriving machine is connected with the plurality of nozzles in series and the shared pressure in the nozzles is too small is solved.

The invention discloses an intelligent bathtub with an adjustable cleaning nozzle and an adjusting method thereof, and belongs to the technical field of intelligent bathtubs, the intelligent bathtub comprises a bathtub body, a permeable box is arranged on the left side of the lower surface of the inner wall of the bathtub body, and the upper surface of the permeable box is fixedly connected with the lower surface of a back cushion. The two spraying pipes are adjusted by holding the handle, the two spraying pipes can be driven to move leftwards by pulling the handle, water sprayed by the spraying heads can effectively wash the inner wall of the bathtub body, in the process of pressing the handle downwards, the handle drives the spraying pipes to turn downwards through the strong ribs, the position of the spraying heads is adjusted to be close to the inner side wall of the bathtub body, and water pressure impact force is increased; and secondly, when the spraying head continues to be adjusted, the handle can be held to turn over laterally, as a rotating shaft is sleeved with the bearing, the spraying pipe can turn over laterally to clean the bathtub body in multiple directions, and compared with a traditional mode, the scheme effectively achieves the purpose of cleaning the bathtub body in a multi-direction and synchronous spraying mode, saves water resources and improves the flushing effect at the same time.

The invention belongs to the technical field of building construction, and particularly relates to a foundation pit narrow area backfill compaction device which comprises a mounting plate, an air cylinder is fixedly connected to the outer wall of the bottom of the mounting plate, and a pressing plate is fixedly connected to the outer wall of the bottom of the air cylinder. According to the device, the anti-protrusion assembly is arranged, when the compaction assembly is used for compacting backfill soil, the backfill soil on the outer side of a pressing plate is prone to being extruded and protruding along with extrusion between the pressing plate and the backfill soil, and a third hydraulic cylinder is adjusted to drive a pushing plate to move; according to the backfilled soil compacting device, the pushing plate is arranged on the backfilled soil compacting device, so that the flattening roller below the pushing plate extrudes and flattens the bulged backfilled soil, the situation that the compaction position is hollow due to the bulged backfilled soil is prevented, the backfilled soil compacting effect is further improved, and in the extruding and flattening process of the flattening roller, the protection pieces at the two ends of the roller frame protect the flattening roller; and the condition that the smoothing roller rotates to drive the backfill soil to rise is prevented, and backfill soil backflow is avoided.

The invention provides a loop type heat pipe. The loop type heat pipe comprises a loop pipe body and an evaporation cavity, wherein the evaporation cavity comprises a first containing chamber, a second containing chamber and a third containing chamber, the first containing chamber, the second containing chamber and the third containing chamber communicate with one another, the first containing chamber comprises a first liquid storage area, the second containing chamber comprises at least one backflow prevention flow channel, the third containing chamber comprises a second liquid storage area,and the third containing chamber is in contact with a heat source of the outside; and the first liquid storage area and the second liquid storage area are arranged so that water cooling liquid in thesecond liquid storage area can be rapidly and completely consumed, the water cooling liquid in the first liquid storage area can flow to the second liquid storage area to be used as adjustment. According to the loop type heat pipe, the back flowing of the water cooling liquid can be avoided, and air burning of a heated cavity can be prevented.

The invention discloses a gastrointestinal fluid decompression device for gastrointestinal surgery which comprises an effusion sterilization box, a fluid pumping mechanism is arranged at the front end of the effusion sterilization box, the fluid pumping mechanism comprises a first fluid suction pipeline, a pump body, a second fluid suction pipeline, a one-way valve and a stomach cannula, the first fluid suction pipeline is arranged at the front end of the effusion sterilization box, the pump body is arranged at the front end of the first liquid suction pipeline, the second liquid suction pipeline is arranged at the front end of the pump body, and the one-way valve is arranged at the front end of the second liquid suction pipeline. According to the device, a channel is formed in one direction, the effect of blocking backflow is achieved, the practicability of the device is improved, the situation of backflow caused by improper operation is avoided, use is easy and convenient, discharged gastrointestinal effusion can be disinfected at the first time, pathogenic bacteria are prevented from diffusing in air, the extracted gastrointestinal effusion can be rapidly packaged in a centralized mode, and the use requirements are better met.

The recyclable gel ink pen refill comprises a first pen refill tube, one end of the first pen refill tube is movably connected with a second pen refill tube, a pen point is movably connected to the end, away from the second pen refill tube, of the first pen refill tube in an inserted mode, and a negative pressure assembly is movably arranged at the end, away from the first pen refill tube, of the second pen refill tube. The end, away from the negative pressure assembly, of the second refill tube is placed in ink, a driving plate is pressed to drive a corrugated tube and a damping spring to be compressed, air in the corrugated tube is discharged through a second one-way valve, and the driving plate is loosened to drive the negative pressure assembly to rotate under the action of the damping spring. Air in the second refill tube enters the inner wall of the corrugated tube through the first one-way valve, ink is sucked into the second refill tube, the operation is repeated for several times until the second refill tube is filled with the ink, and the second refill tube and the first refill tube are connected through the connecting tube and the connecting groove again; therefore, the purpose of conveniently recycling the second refill tube is achieved.

The invention discloses a powder coating processing device which comprises a material bin, a first motor, a transmission shaft, a clapboard, a second motor, a packing auger, a screening barrel, a third motor, a rotary shaft and a blower. The powder coating processing device is characterized in that the material bin is arranged on a support frame, the first motor is arranged on the top of the material bin, the transmission shaft is arranged in the material bin, the clapboard is arranged in the material bin, the second motor is arranged on the top of the material bin, the packing auger is arranged between the inner wall of the material bin and the clapboard, the screening barrel is arranged at the bottom in the material bin, and the third motor is arranged at the bottom of the material bin.According to the powder coating processing device, a material falling pipe connected with a feeding bin is arranged on the top in the material bin, on the one hand, the material falling pipe can prevent powder coating from being blown into the feeding bin by a gas flow carried by the packing auger, thus the condition of returning of the powder coating is avoided, on the other hand, the powder coating in the feeding bin can fully fall on a screening board to be ground, processing of the powder coating is convenient, working efficiency is improved, and waste of the powder coating is reduced.

The invention discloses a magnetically-driven high-flow pulsating type blood pump. The blood pump includes a mounting bracket and at least two magnetic push devices installed on the supporting surfaceof the mounting bracket; each magnetic push device includes a driving coil, a dual-pass connector, an inner capsule and a magnetic shielding drum. Every two magnetic push devices are classified intoone group, and each group is provided with a driving assembly; each driving assembly includes a support point, a balance supporting rod, two connecting push rods and two permanent magnet pistons. Every two magnetic push devices are combined into one group and are in linkage with one corresponding driving assembly. Heating can be effectively reduced, the power of the whole blood pump is increased by times, the flow is increased at the same time, the working conditions can be effectively improved, and a great working result can be obtained.

The invention discloses a novel filter type centrifugal machine for producing water-based environment-friendly paint aggregate. The novel filter type centrifugal machine is characterized by comprisinga connecting pipeline, a controller, a waste gas exhaust tube, a water inlet tube, a centrifugal working room, a motor storage room, an anti-reflow device, a motor controller, a starting motor, a base, and a water draining tube, wherein the anti-reflow device is equipped with a mechanical linking device, a trigger start-up device, a movable regulating device, a transmission device, an aggregate inlet device, a height regulating device, a slide wheel moving device and an outer housing. The novel filter type centrifugal machine has the beneficial effects that: one anti-reflow device is additionally arranged, and an outlet of a charge tube is set to be in the shape of a horn, so that materials are diverged while sprayed out, and therefore, flow velocity is reduced; moreover, after being aligned to a through hole, the novel filter type centrifugal machine can directly enter a rotary drum, so that occurrence of a reflux condition is avoided to the greatest extent; and a water flow accelerating device is arranged, so that flow velocity of water is increased, and materials are guided to corresponding positions; and flow velocity of water is utilized for completely feeding aggregate intoa centrifugal working room for centrifuging.

The invention discloses a production device of coating. The device comprises a material bin, a first motor, a transmission shaft, a clapboard, a second motor, a package auger, a screening barrel, a third motor, a rotary shaft and a blower. The production device of the coating has the characteristics that the material bin is arranged on a support frame, the first motor is arranged on the top of thematerial bin, the rotary shaft is arranged in the material bin, the clapboard is arranged in the material bin, the second motor is arranged on the top of the material bin, the packing auger is arranged between the inner wall of the material bin and the clapboard, the screening net is arranged on the bottom in the material bin, and the third motor is arranged on the bottom of the material bin. According to the production device of the coating, a material falling pipe is arranged on the top in the material bin and connected with a feeding bin, on the one hand, the material falling pipe can prevent the powder coating from being blowed into the feeding bin by gas flow carried by the package auger, so that the condition of returning of the powder coating, on the other hand, the powder coatingin the feeding bin can fall on the screening board and being ground significantly, the production of the powder coating is convenient and working efficiency is improved.

The invention discloses intensive ecological treatment equipment for village and town sewage. The equipment structurally comprises an aeration tank, a supporting plate, four aerators and a water outlet, wherein the supporting plate is transversely mounted at the inner center of the aeration tank; the four aerators are transversely arranged at the upper end of the supporting plate; the water outlet is located at the rear end of the aeration tank; the aeration tank comprises a water inlet, a dirt baffle, a filter screen, material collecting devices and a smashing device; each material collecting device comprises a filter material screen, a partition plate, a backflow preventing hole, a material separating block and a water through hole; the material separating block comprises a material clamping block, a material clamping groove, a guide plate and a rewinding spring; and the guide plate comprises a rotating hole, a downward flowing plate, a through hole and a clamping block. The two material collecting devices are arranged at the front end of the aeration tank to collect excrement mixed in water; and then the two partition plates are arranged in the material collecting devices, water flow gradually shrinks from upper end to lower end and flows downwards through the backflow preventing holes, so the situation that excrement at the lower ends of the partition plates flows back can be avoided.

The invention discloses a lifting and hidden easy-to-clean self-cleaning range hood. The range hood comprises a range hood body, a first gas outlet pipe, a second gas outlet pipe and a third gas outlet pipe. The first gas outlet pipe is located at the top end of the range hood body, and the bottom end of the first gas outlet pipe communicates with the range hood body; a control valve is arranged above the first gas outlet pipe, one end of the control valve is in communication with the first gas outlet pipe, and the other end of the control valve is in communication with the second gas outlet pipe and the third gas outlet pipe separately; and the range hood further includes a self-cleaning device used for range hood cleaning. According to the scheme, the self-cleaning of the range hood is effectively realized, the staying time of oil fume in the range hood is short, and the cleaning difficulty is relatively low; and the efficiency of the range hood can be greatly improved during the subsequent range hood operation. The structure of the control valve is further improved, the sealing performance of the control valve is improved, and the situation of oil fume backflow is avoided.

The invention discloses an impeller comprising a wheel hub and a plurality of a first fan flabellum and a plurality of a second fan flabellum. Each of the first fan flabellum is arranged around the wheel hub and each of the second fan flabellum is arranged between the first fan flabellum. In addition the length of the second fan flabellum is less than that of the first fan flabellum.

The invention discloses energy-saving type sewage treatment equipment and method, and relates to the technical field of sewage treatment, in particular to energy-saving type sewage treatment equipment and method, the energy-saving type sewage treatment equipment comprises an equipment shell, the left side of the equipment shell is connected with a connecting box, the upper surface of the connecting box is provided with a feeding port, and a filter plate is arranged in the connecting box; a flow guide plate is hinged to the side, close to the equipment shell, of the tail end of the connecting box, a driving air cylinder is installed at the upper end of the connecting box, and the output end of the driving air cylinder is connected with a scraping plate. The energy-saving sewage treatment equipment is provided with the driving motor, the driving gear is driven to rotate and meshed with the driven gear to rotate, so that the filter barrel is driven to rotate, and after sewage in the filter barrel is primarily filtered by the filter plate, impurities can be effectively reduced, so that the condition that the filter barrel is blocked is reduced, and the service life of the filter barrel is prolonged. The pressure of the filter vat on sewage treatment is reduced, and the sewage treatment efficiency is improved.

The invention discloses sewage treatment automation control equipment for a sewage treatment plant, the sewage treatment automation control equipment comprises a bottom plate, a primary settling tank and a secondary settling tank, the top of the bottom plate is provided with the primary settling tank, a support frame is embedded in the primary settling tank, and a water suction pipe is installed on the outer wall of one side of the primary settling tank in a penetrating manner; a control valve is installed on the outer side of the water suction pipe, one end of the water suction pipe is connected with a water pump, the water pump is installed at the top of the bottom plate through bolts, the water conveying end of the water pump is connected with a second water conveying pipe, one end of the second water conveying pipe is installed at the top of a sealing cover in a penetrating mode, and the secondary settling tank is installed at the top of the bottom plate. An ozone generator is used for generating ozone, part of oxygen in the air is decomposed and polymerized into ozone by using a high-pressure ionization method, the ozone is conveyed into a disinfection tank for disinfection, and the ozone has strong disinfection property, is easy to volatilize and does not leave drug impurities in water.

The invention discloses a multifunctional high-end intelligent infusion boom, comprising a hanging ring, a main rod, a first telescopic rod, a second telescopic rod, a hook and a liquid crystal touchscreen. The hanging ring is arranged at the center position of the top end of the whole device. The upper part of the main rod is connected with a hanging ring through a connecting piece, and the lower part is connected with a first telescopic rod. One end of the second telescopic rod is connected with the first telescopic rod, and the other end is connected with a hook. The hook is arranged at the center position of the bottom end of the whole device. The liquid crystal touch screen is arranged on the surface of the main rod. The main rod is also provided with a microprocessor and a power module, a voice module, an alarm module, a WiFi module, an infrared receiving module, a weight sensor and a length regulator connected with the microprocessor. In actual medical treatment, the inventioncan adjust the length, can communicate with the computer to realize data sharing, also has the effect of monitoring the liquid level, and has good market prospect.

The invention belongs to the technical field of polypropylene film production, and particularly relates to a polypropylene bidirectional stretching film production line. The polypropylene bidirectional stretching film production line comprises a sealing cover, an outer cylinder, connecting pipes, a buffering spring and a filtering cylinder; the buffering spring is fixed to the inner bottom of theouter cylinder; the filtering cylinder is fixed to the upper end of the buffering spring; and a material inlet is formed in the upper end of the side of the outer cylinder. According to the polypropylene bidirectional stretching film production line, the sealing cover with a pressing plate is arranged, the pressing plate is descended by pressing a guide rod downwards; the pressing plate presses the filtering cylinder downward; the filtering cylinder is descended; the filtering cylinder is rebounded upwards under the action of the elastic force of the buffering spring, which makes impurities inthe filtering cylinder fall off, and avoid blockage that affects the filtering efficiency; the sealing cover is opened; the filtering cylinder extends out upwards under the action of the elastic force of the buffering spring, which facilitates withdrawing and replacing; the connecting pipes are connected between each of the material inlet and a material outlet of the outer cylinder; and each connecting pipe is in an structure that one end close to the outer cylinder is inclined upward, so that the materials in the material inlet and the material outlet are prevented from refluxing into the filtering cylinder to cause inconvenience in the replacement of the filtering cylinder.

The invention discloses a continuous sucker rod operation assembly for oil well exploitation and an exploitation technology, and relates to the technical field of oil fields, in particular to the continuous sucker rod operation assembly for oil well exploitation and the exploitation technology, which comprise a sucker rod, a centralizer is movably sleeved outside the sucker rod, the centralizer is internally and flexibly connected with a supporting rod. According to the continuous sucker rod operation assembly for oil well exploitation and the exploitation technology, a centralizer is arranged at any position of a sucker rod in a sleeving mode, then a threaded cylinder is rotated to push a movable ring to move downwards, then the movable ring pushes a pressing rod to move downwards, at the moment, the bottom end of the pressing rod presses a pressing block inwards, the pressing block is made to press the outer surface of the sucker rod, thus to fix the centralizer, and the centralizer can be conveniently fixed to any position of the surface of a sucker rod, so that the portion which is prone to abrasion is protected, the number of used centralizers is reduced, and cost is reduced.