87results about How to "Guaranteed one-way flow" patented technology

The invention discloses a charging system for an unmanned aircraft. The charging system is characterized by comprising a power-taking device, an electric energy transmitting device, an electric energy receiving device and an aircraft-mounted battery, wherein an overhead transmission line is arranged on the power-taking device; the electric energy transmitting device is for converting power frequency alternating current into high-frequency alternating current; the electric energy receiving device is arranged on the unmanned aircraft; electric energy transmission is realized in a wireless manner between the electric energy receiving device and the electric energy transmitting device; the aircraft-mounted battery is arranged on the unmanned aircraft, is used for supplying power to the unmanned aircraft, and is connected in series to a current loop of the electric energy receiving device. Compared with the prior art, an electric unmanned aircraft charging system based on an alternating-current power transmission overhead line provided by the invention has the advantages that a full-autonomous and safe charging way is realized for the unmanned aircraft, and the distance per charge of the unmanned aircraft is prolonged. Meanwhile, a high-frequency inductive constant-current charging circuit based on an unstable alternating-current power supply is provided, so that unmanned charging operation is fully realized, the dependence of the unmanned aircraft on a ground base or a mobile base station is reduced, labor operation is reduced, and labor cost is reduced.

The invention relates to the technical field of escape for vehicles in danger and discloses an automatic window breaking device for a drowning vehicle. The automatic window breaking device comprises a shell. A through hole is formed in one end of the shell. An impacting bar is slidably connected in the through hole. An incomplete gear and a rack are arranged in the shell. Gear teeth are arranged on a section of inferior arc of the incomplete gear. The gear teeth are engaged with the rack. One end of the rack is fixedly connected with the impacting bar. The end, connected with the rack, of the impacting bar extends in the circumferential direction to form a boss. Elastic pieces are arranged between the boss and the shell. The automatic window breaking device further comprises a turbine power device. The turbine power device comprises a shell, helical blades and an output shaft. The output shaft of the turbine power device is connected with the incomplete gear through belt transmission. The automatic window breaking device is used for the condition that the vehicle is drowning, effective trigger is achieved through inlet water in the vehicle, and hydraulic power is utilized for driving the impacting bar to break glass, so that window breaking is achieved.

The invention relates to a tool for grouting in a loose coal seam section during drilling, which comprises a one-way valve, a valve seat, a ratchet wheel control mechanism, a shell and a nozzle. A tray shaft is arranged in a tray shaft hole, a valve spring, a tray and a rubber pad are limited on the tray shaft through a valve nut; the ratchet wheel control mechanism comprises a ratchet wheel spring, a sliding plate, a rotating plate and a fixed slot, the two sides of the sliding plate are provided with the ratchet wheel spring and the rotating plate, and the end faces of the sliding plate and the rotating plate have the same diameter and are provided with three through holes with the same design; when control signals are not executed, the fixed slot is sleeved outside the valve seat and the rotating plate, and a fixed slot bulge is arranged on the fixed slot and is clamped in a short slot in a sleeve for positioning in the sleeve; and the shell comprises a short drill bit joint and the sleeve, and the nozzle is arranged on the outer wall of the sleeve. The two ends of the shell are connected with a drill bit and a drill stem through pipe threads and are provided with a sealing ring. The grouting tool has a simple structure, normal drilling and grouting type drilling can be achieved via mechanical signal transmission and control, and the tool can be used safely and reliably and is suitable for drilling of loose sections after gas exploration in underground coal seams and also other under-balanced drilling projects.

The invention provides an extracorporeal upflow regeneration process for ion exchange resin. The process includes the following steps that firstly, soft water is produced, and meanwhile exhausted resin is continuously discharged from the lower portion of an ion exchanger; secondly, the exhausted resin is conveyed to a gathering tank through injection, conveying fluid is drained from the upper portion of the gathering tank, and the exhausted resin is discharged from the bottom of the gathering tank and enters a regeneration tank; thirdly, regeneration fluid flows into the lower portion of the regeneration tank, upflow regeneration is conducted on the exhausted resin, and regenerated resin is discharged from the bottom of the regeneration tank and enters a cleaning tank; fourthly, water flows into the lower portion of the cleaning tank, the regeneration fluid left on the regenerated resin is reversely cleaned away, and the cleaned regenerated resin is discharged from the bottom of the cleaning tank and is conveyed back to the ion exchanger through injection. According to the process, the soft water can be continuously produced, energy consumption is reduced, and the equipment utilization rate is increased.

The invention relates to an oil supply device which comprises a machine frame. The machine frame is provided with an oil tank, a first piston mechanism and a driving mechanism. The first piston mechanism comprises a first piston cylinder, a first piston and a first piston rod. The first piston is in sealed sliding connection with the interior of the first piston cylinder, the first piston rod is fixedly connected to the first piston, an oil inlet pipe is connected between the first piston cylinder and the oil tank, the oil inlet pipe is provided with a first one-way valve, the first piston cylinder is connected with an oil drainage mechanism, a brush is connected to the oil drainage mechanism, and the oil drainage mechanism is provided with a second one-way valve. The driving mechanism comprises an inner gear ring and a gear, the gear is engaged with the inner gear ring, a first connection rod is fixedly connected to the gear, the end, away from the gear, of the first connection rod isused for being detachably connected with a chain wheel, a second connection rod is fixedly connected to the gear, and the end, away from the gear, of the second connection rod is rotationally connected to the first piston rod. By means of the scheme, a chain is automatically coated with oil.

The invention discloses a sealing structure of a shaft end of a horizontal concrete mixer, which comprises a main machine shaft(1) and a mixer shell(2), a shaft sleeve(2) is fixed on an outer ring of the main machine shaft(1), a spiral body(8) is fixed on an outer ring of the shaft sleeve(2), wherein the spiral body(8) is sleeved with a sealing outer sleeve(6) with an L-shaped cross section, a spiral channel is formed between one side of the sealing outer sleeve with the L-shaped cross section and the spiral body(8), and the other side of the sealing outer sleeve is attached to the outer wall of the mixer shell(2); the sealing outer sleeve(6) is provided with an oil inlet(5), and the outer end face of the sealing outer sleeve(6) is provided with an end cover(3); and the end cover(3) is sleeved on the spiral body(8) and seals an outer end opening of the spiral channel. The sealing structure has the advantages of simple overall structure, convenient assembly and disassembly and long service life.

The invention provides a cooling device. The cooling device comprises a water cooling circuit, an oil cooling circuit and an air cooling device, wherein the water cooling circuit is used for cooling an electric reactor and a traction converter; the oil cooling circuit is used for cooling a main transformer; and the air cooling device is used for cooling the cooling mediums in the water cooling circuit and the oil cooling circuit. The cooling device has the benefits that the condition that the cooling device cannot be operated normally as any one of a fan and a water pump breaks down due to single design of the fan and the water pump is effectively solved; the noise is effectively reduced, the comfort of a train is ensured and the service life of the motor is prolonged through improving thecooling fan; cooling oil can be effectively prevented from entering a dryer to disturb the normal work of the dryer through improving the structure of an expansion oil tank and the mounting manner ofthe dryer; and the expansion water tank is a single cavity structure so that the structure is simpler and more reliable and cavitation can be effectively prevented.

The invention discloses an adjustment device, system and method for the refrigerant circulation quantity of an air conditioner. The adjustment device comprises an electromagnetic valve, an auxiliary throttling device and a liquid storage tank. The adjustment system comprises a control device, a pressure acquisition device and the adjustment device. The adjustment method comprises the following steps that firstly, the current pressure values of any positions in a connecting pipe between an outlet of a compressor and a throttling valve are acquired; secondly, if the current pressure values are larger than a preset electromagnetic valve opening value, the third step is executed; and thirdly, the electromagnetic valve is opened, so that part of refrigerants are made to flow into the liquid storage tank automatically, the refrigerant circulation quantity of the air conditioner is reduced, and then the first step is executed. The adjustment device is connected with a main throttling device in a refrigerant circulation system in parallel. According to the adjustment device, system and method for the refrigerant circulation quantity of the air conditioner, the circulation quantity of refrigerants in the refrigerant system of the air conditioner is adjusted through the liquid storage tank, and the optimal matching between the refrigerant circulation quantity of an air conditioner system and the operating condition of the air conditioner is achieved.

The invention relates to a triple-generation system based on an energy-saving solar air source heat pump. The triple-generation system comprises an air compression unit, a solar heating unit and a refrigerant circulating unit, wherein the air compression unit comprises a first compressor and a gas-liquid separator; the solar heating unit comprises a hot water heat exchanger, a first hot water tank, a solar heat collector, a solar pump and a hot water pump; and the refrigerant circulating unit communicates with a heat exchanger of an air conditioner, a circulating pipeline and an air-cooled heat exchanger. The triple-generation system disclosed by the invention has functions of conditioning air and supplying domestic hot water; meanwhile, solar energy is utilized to the maximum extent to supplement heat required by the system; the utilization rates of solar energy and electric energy are high; renewable energy sources are fully utilized, and energy conservation and environmental protection are realized; the triple-generation system has the advantages of simple structure, reliable operation, greenness and low carbon; the triple-generation system can be used for continuously providing the domestic hot water, refrigerating in summer and warming in winter; more electric energy is saved; and by reasonable control, multiple modes of separately refrigerating, separately supplying heat, separately producing hot water, simultaneously refrigerating and producing hot water, simultaneously heating and producing hot water and the like can be realized.

The invention relates to a valve handle paint-spraying device. The device comprises a rack drive shaft. The drive shaft is fixedly connected with a first drive rod. The other end of the first drive rod is rotationally connected with a second drive rod. The position, below the drive shaft, in a rack is fixedly connected with a slide groove. A slide block is in sliding connection with the interior of the slide groove. The end, away from the first drive rod, of the second drive rod is rotationally connected to the slide block. The slide block is rotationally connected with a drive tooth. One sideof the drive tooth is fixedly connected with a limiting block. A paint-spraying rack is arranged below the slide groove and provided with clamping grooves, paint-spraying outlets and a storage groove. The rack is fixedly connected with a lead screw. An electric heating plate is arranged at one side of the paint-spraying rack. The drive shaft is further connected with an intermittent supply mechanism. The intermittent supply mechanism is provided with a discharging outlet connected with a discharging pipe. The other end of the discharging pipe is connected with the storage groove of the paint-spraying rack. Through the device, the problem that during paint-spraying of a valve handle, paint-spraying dead angles are prone to emerging is solved.

The invention provides a composite type electrostatic dustproof face mask. According to the technical scheme adopted by the invention, the dustproof face mask is mainly composed of a direct-current power supply (1) and a face mask body (2), wherein the power supply (1) is connected with the face mask body (2) through an electric wire. A dustproof box (4) is fixedly arranged at the outer side of the lower base of the face mask body (2); a sealing mask (5) is fixedly arranged inside the lower base of the face mask body (2). A face protecting mirror (6) is fixedly arranged on the middle part of the face mask body (2); a small fan (7) is fixedly arranged on the upper part of the face mask body (2); a gas exhaust valve plate (3) is fixedly arranged on the lower side of the sealing mask (5); the two ends of a mask tying belt (8) are fixedly arranged at the two sides of the face mask body (2) separately. Metal wire screens (9) and a filter film (10) are mounted inside a shell (11); a filter membrane (10) is positioned between the two metal wire screens (9); and a gas inlet valve plate (12) is fixedly arranged at the inner side of the shell (11). The composite type electrostatic dustproof face mask has the characteristics of high dust removal efficiency and good man-machine matching performance.

The invention discloses a balloon counterpulsation driven mechanical auxiliary circulating device with valves. The balloon counterpulsation driven mechanical auxiliary circulating device with the valves comprises drainage pipelines, a feeding valve, a balloon counterpulsation system, a blood storage chamber, a discharging valve and infusion pipelines, wherein the balloon counterpulsation system comprises a control system, an alarm system and a balloon; the balloon is connected with the control system and the alarm system through a balloon catheter; the balloon is positioned in the blood storage chamber; two ends of the balloon catheter are respectively connected to the balloon positioned in the blood storage chamber as well as the control system and the alarm system which are positioned on the outside via the infusion pipelines or the drainage pipelines; and the control system controls counterpulsation frequency of the balloon through the balloon catheter, provides a driving force for the blood storage chamber for discharging blood during counterpulsation of the balloon, and controls blood discharge capacity of the blood storage chamber. When the feeding valve, the balloon, the blood storage chamber and the discharging valve are placed in the outside, an external mechanical auxiliary circulating device is formed; and when the feeding valve, the balloon, the blood storage chamber and the discharging valve are placed in the body of a patient, an internal mechanical auxiliary circulating device is formed.

The invention belongs to the technical field of tires, and particularly relates to a solid tire and a production method thereof. The solid tire comprises a controller, a temperature control switch, awater tank, a lantern ring, a water outlet hole, a conical opening, a cooling unit, a spring piece and a one-way water inlet unit, wherein the water tank is fixed on an automobile rear axle; the lantern ring is fixed on a transmission shaft and positioned below the water tank; the water outlet hole is positioned in the solid tire; by arranging the water tank and the water outlet hole, when an automobile runs in an environment with a large temperature difference, the phenomenon of abrasion caused by temperature rise of the tire is avoided, and water in the water tank is prevented from being wasted when the temperature is not required to be reduced; meanwhile, due to the arrangement of the conical opening, water inside an ellipsoid cavity is prevented from flowing back into a hollow pipeline, so that the unidirectional flow of water flow is ensured, and the water quantity inside the ellipsoid cavity is also kept; and through setting up the lantern ring, on one hand, intermittent water inlet is realized, and on the other hand, a piston rod pressurizes the inside of the water tank, the water inlet speed becomes fast, thereby improving the fluidity and the heat dissipation efficiency ofthe water flow.

The invention provides a novel steam self-priming fluid mixing integral foam pump. The novel steam self-priming fluid mixing integral foam pump comprises an air-liquid self-priming cylinder block; theair-liquid self-priming cylinder block is made of a high-elasticity silica gel material resisting acid, alkali and salt, and is provided with three independent self-priming cylinder blocks, air-liquid mixing connecting covers arranged at the upper ends of the air-liquid self-priming cylinder blocks and through holes communicating with the self-priming cylinder blocks; the air-liquid mixing connecting covers seal the upper ends of the self-priming cylinder blocks, and are connected with gas sucking ports, liquid sucking ports and air-liquid mixing leadout ports formed in connecting port fixedcovers by the through holes; the lower ends of the air-liquid self-priming cylinder blocks are fixed by cylinder block fixed sleeves; cylinder block driving connecting brackets are embedded in the cylinder block fixed sleeves; the cylinder block fixed sleeves and the cylinder body driving connecting brackets are connected by coaxial eccentric shafts; and the eccentric shafts are connected with motors through eccentric rotors. The invention further provides a bathroom device; and the bathroom device applies the novel steam self-priming fluid mixing integral foam pump.

The invention relates to an economizer hot water recirculation system applicable for a subcritical steam drum boiler generator set, and a working method thereof. The hot water recirculation system comprises an economizer, a steam drum, a drop pipe and a water supply pipe, and a water outlet of the economizer, the steam drum and the drop pipe communicate with each other in sequence; the water supply pipe communicates with an inlet of the economizer; the hot water recirculation system further comprises a No.1 electric regulating valve, a No.2 electric regulating valve, a manual shutoff valve, aNo.1 check valve, a No.2 check valve, a circulating pump, a recirculation pipe and a bypass; the recirculation pipe communicates with a lower collection box of the drop pipe, and further communicateswith an inlet collection box of the economizer at the time; the recirculation pipe is provided with the circulating pump of which the both sides are provided with the No.1 electric regulating valve and the manual shutoff valve; the circulating pump is provided with the bypass which is provided with the No.2 electric regulating valve; and the recirculation pipe is provided with the No.1 check valve, and the water supply pipe is provided with the No.2 check valve. The hot water recirculation system can be used for preventing the economizer from being dry-burnt in the start-stop process, and improving the outlet smoke temperature of the economizer under the low load condition, so that the wide load denitrification is achieved.

The invention provides an external regeneration reverse-flow ion exchange system and an application method of the external regeneration reverse-flow ion exchange system. The external regeneration reverse-flow ion exchange system comprises an ion exchanger, an ejector, a collecting tank, a regeneration tank and a cleaning tank, wherein the ion exchanger, the ejector, the collecting tank, the regeneration tank and the cleaning tank are connected in sequence, the bottom of the collecting tank is connected with the top of the regeneration tank, the bottom of the regeneration tank is connected with the top of the cleaning tank, the bottom of the cleaning tank is connected back to the ion exchanger, the ejector is arranged between the cleaning tank and the ion exchanger, a water outlet is formed in the collecting tank, a liquid inlet is formed in the lower portion of the regeneration tank, a liquid discharge outlet is formed in the upper portion of the regeneration tank, a water inlet is formed in the lower portion of the cleaning tank, and a water discharging outlet is formed in the upper portion of the cleaning tank. According to the application method of the external regeneration reverse-flow ion exchange system, ion exchange resin out of work is processed through reverse flow regeneration outside the exchanger and then returns to the exchanger, soft water can be continuously produced, energy consumption is reduced, and the equipment utilization rate is increased.

The invention discloses a bladder fistulation tube. The bladder fistulation tube comprises a duct, a water sac, an extension hose and a leakproof assembly, wherein an urine guiding channel and a watersac channel are formed in the duct; an urine guiding outlet corresponding to the urine guiding channel and a water filling opening corresponding to the water sac channel are formed in the rear part of the duct; an elastic pressure valve is arranged in the urine guiding channel; one end of the extension hose communicates with an inlet of the urine guiding channel, and a plurality of first urine inlets are formed in the side wall of the other end of the extension hose; a through hole is formed in the center of the leakproof assembly, and the leakproof assembly can be movably arranged on the duct in a penetrating manner; and a gel layer is arranged on one side of the leakproof assembly, so that the leakproof assembly can be attached on the skin. The bladder fistulation tube disclosed by theinvention can enable urine in the urinary bladder to be completely drained, the problem of urine leakage infection can also be effectively prevented; unidirectional flow of the urine can be realized,and the pressure of the fistulation tube can be controllable; and the duct can also be bent, so that the bladder fistulation tube is convenient for a patient to use and fix.

The invention discloses a side suction pipe valveless piezoelectric pump and belongs to the field of liquid machines. The side suction pipe valveless piezoelectric pump is characterized by comprising two identical piezoelectric vibrators which are arranged on the upper side and the lower side of a pump body in a face-to-face mode, the upper end face and the lower end face of the pump body are provided with counter bored holes, the piezoelectric vibrators are installed inside the counter bored holes, a supporting plate is arranged on the middle face, symmetric about the upper and lower piezoelectric vibrators, of a pump cavity, a step is arranged between the supporting plate and the bottom faces of the counter bored holes, the thickness of the supporting plate is smaller than the height of the pump cavity, a main outer side pipe and a main inner side pipe are machined in the middle perpendicular to the end face of the supporting plate, the diameter of the main outer side pipe is larger than that of the main inner side pipe, a circular branch pipe is machined inside the supporting plate on the axis perpendicular to the main outer side pipe and main inner side pipe, the diameter of the branch pipe is not larger than that of the main outer side pipe, the branch pipe is tangent with the joint face of the main outer side pipe and the main inner side pipe, a boss is arranged on the outer side of the pump body so that the branch pipe and the outer pipe can be connected, and the side face of the pump body is provided with a deflation hole and a closed bolt. The side suction pipe valveless piezoelectric pump is applied to the occasion that reverse flow is not allowed to exist in a liquid source.

The invention discloses double-side air blowing type leather processing equipment. A fan (1) is sequentially connected with an air heater (2) and drying equipment (3), a water supply box (12) provides hot water for the air heater (2), cold water of the air heater (2) is heated by a solar water heater (14) and a buried-pipe heat collector (17) and then returns to the water supply box (12), the drying equipment (3) is connected with a first moisture absorption device (4) and a second moisture absorption device (5) respectively through a three-way valve A (7), air outlets of the moisture absorption devices are connected with emptying pipes and air return pipes respectively, and a regeneration fan (6) is used for performing desorption on the moisture absorption devices which are saturated through adsorption. The leather processing equipment has the benefits as follows: solar energy is fully utilized, electric power consumed by a system for water heating is reduced, and meanwhile, the solar water heater and the buried-pipe heat collector are used, so that the problem that the efficiency of a ground source heat pump is reduced after usage for a certain period is solved.

The invention relates to the technical field of environmental protection. The invention further discloses an incineration waste gas treatment device based on the planetary gear transmission principle.The device comprises a treatment tank, and an air inlet is fixedly connected to the outer part of the treatment tank; the interior of the air inlet is movably connected with a rotating ring; a fan plate is movably connected to the interior of the rotating ring; reset springs are movably connected to the outer part of the fan plate; a convex block is movably connected to the outer part of the fanplate; a rotating block is movably connected to the interior of the treatment tank; an air cavity is formed in the rotating block; a net plate is movably connected to the outer part of the rotating block; a spiral plate is movably connected to the upper part of the net plate; through cooperative use of the air inlet, the rotating ring, the fan plate, the reset spring and a protruding block, it isguaranteed that waste gas at the air inlet is adsorbed, one-way flowing of the waste gas is guaranteed through rotation of the fan plate, waste gas backflow is effectively prevented, air pollution caused by waste gas backflow leakage is avoided, and the waste gas treatment efficiency is effectively improved.

This application relates to the field of heat dissipation technology, and discloses an outdoor unit of an air conditioner, which includes a radiator. The radiator includes: an evaporation part, including a base plate; The diameter of the fluid inlet pipe is smaller than the diameter of the fluid outlet pipe. The air conditioner outdoor unit of the present application is equipped with a radiator, and the heat transfer working medium pipeline of the radiator includes a fluid inlet pipe, a transition pipe and a fluid outlet pipe, and the diameter of the fluid inlet pipe is smaller than the pipe diameter of the fluid outlet pipe, so that the heat transfer can be ensured. The one-way flow of thermal working fluid improves the heat dissipation efficiency of the radiator. The application also discloses a method and device for adjusting the outdoor unit of the air conditioner.

The invention discloses a sealing structure of a shaft end of a horizontal concrete mixer, which comprises a main machine shaft(1) and a mixer shell(2), a shaft sleeve(2) is fixed on an outer ring of the main machine shaft(1), a spiral body(8) is fixed on an outer ring of the shaft sleeve(2), wherein the spiral body(8) is sleeved with a sealing outer sleeve(6) with an L-shaped cross section, a spiral channel is formed between one side of the sealing outer sleeve with the L-shaped cross section and the spiral body(8), and the other side of the sealing outer sleeve is attached to the outer wallof the mixer shell(2); the sealing outer sleeve(6) is provided with an oil inlet(5), and the outer end face of the sealing outer sleeve(6) is provided with an end cover(3); and the end cover(3) is sleeved on the spiral body(8) and seals an outer end opening of the spiral channel. The sealing structure has the advantages of simple overall structure, convenient assembly and disassembly and long service life.

The invention provides a self-heating amplification detection device. The self-heating amplification detection device comprises a reaction structure, a detection structure, an intermediate structure, a self-heating structure and a sealing structure. The self-heating amplification detection device can realize self-heating, can perform amplification reaction detection on different samples, and can also improve the safety performance of the device in the reaction process. The invention further provides a preparation method and a use method of the detection device, and the beneficial effects are as described above. The invention further provides a designed nucleic acid detection system, the nucleic acid detection system comprises an extraction device and a detection device, the RPA technology, closed nucleic acid extraction equipment and a self-heating-dependent colloidal gold test card are combined together, so that an extraction reaction system is completely isolated from the external environment, the biological safety problem can be effectively avoided while the detection time is saved by means of closed normal-temperature amplification, nucleic acid detection can be completely separated from large-scale instruments and equipment, and the on-site detection target of sampling while detecting is realized.

The invention discloses an intelligent storing and taking device for medical supplies. The device comprises a cabinet body, a storage rack, a transfer mechanism and a taking mechanism, wherein a storage window and a taking window are formed in the cabinet body; the storage rack comprises a plurality of cell chambers; the inner walls of the cell chambers incline downwards from front-end openings to rear-end openings of the cell chambers, and first rotating doors and second rotating doors are installed in the cell chambers; the transfer mechanism comprises a material transfer box, a first vertical driving mechanism and a first horizontal driving mechanism, and the first vertical driving mechanism and the first horizontal driving mechanism are used for driving the material transfer box to move between the storage window and the front-end openings of the cell chambers to transfer the medical supplies; and the taking mechanism comprises a taking box, a second vertical driving mechanism and a second horizontal driving mechanism, and the second vertical driving mechanism and the second horizontal driving mechanism are used for driving the taking box to move between the rear-end openings of the cell chambers and the taking window to transfer the medical supplies. The intelligent storing and taking device for the medical supplies can guarantee high-efficiency circulation of the medical supplies and can also avoid secondary pollution.

The invention provides a signal remote transmission gas relay. According to the technical scheme, the external structure of the gas relay is improved, and meanwhile, the image acquisition module is introduced. Specifically, the bottom face of the containing cavity is designed to be the inclined face so that one-way movement of oil can be guaranteed, and meanwhile the middle partition plate is additionally arranged so that large fluctuation can be avoided in the oil flowing process. On the basis, the camera is additionally arranged at the top of the device, a liquid level image can be transmitted to a background in real time and remotely monitored by a worker, and frequent on-site checking actions are omitted. In addition, the sleeve is used for protecting the binding post, and a circuit can enter and exit from the side end; and during maintenance, the flange cover at the upper end can be opened, so that the installation and maintenance of the equipment are not influenced. According tothe invention, the oil level monitoring efficiency of the gas relay is improved, and a more perfect protection structure is provided.

The invention discloses a side-suction pipe liquid mixing and conveying valve-less piezoelectric pump, and belongs to the field of liquid machines. Two identical piezoelectric vibrators are mounted on the upper side and the lower side of a pump body face to face, the upper end face and the lower end face of the pump body are each provided with a counter bore, and the piezoelectric vibrators are mounted in the counter bores. A pump cavity is formed by the two piezoelectric vibrators and a space in the pump body and is cylindrical. A supporting plate is arranged on a middle surface of the pump cavity, and the upper piezoelectric vibrator and the lower piezoelectric vibrator are symmetrical with respect to the middle surface. The supporting plate is located in the middle of the pump cavity, a step is arranged between the supporting plate and the bottom face of one counter bore, the thickness of the supporting plate is made to be smaller than the height of the pump cavity, and the thickness of a cross beam is smaller than the height of the pump cavity. A circular main outer pipe and a circular main inner pipe are arranged in the middle of the end face perpendicular to the supporting plate, and a first branch pipe and a second branch pipe are further arranged in the supporting plate. By means of the side-suction pipe liquid mixing and conveying valve-less piezoelectric pump, two kinds of liquid are conveyed while being mixed through the piezoelectric pump, and the two kinds of liquid flow out of a liquid source all the time, so that the defect of low efficiency caused by repeated flowing of the liquid in a flow channel while an existing valve-less piezoelectric pump works is overcome.

The invention relates to the technical field of valve equipment, and discloses a manual vacuum deflation safety valve. The manual vacuum deflation safety valve comprises a valve body; the valve consists of two parts of a check valve cavity and a ball valve cavity; one side of the check valve cavity is fixedly connected with a filter screen; one side of the filter screen is fixedly connected with awater inlet; the upper surface of the valve body is fixedly connected with a fixed block; the internal of the fixed block is movably connected with a connecting rod through a movable rod; the end, far from the fixed block, of the connecting rod is movably connected with a water baffle plate through the movable rod; the bottom of the fixed block is fixedly connected with a limiting plate; and a spring is fixedly connected between the water baffle plate and the limiting plate. The manual vacuum deflation safety valve is more reliable and convenient to deflate through a handle, a rotating rod and a rotating block; and the check valve cavity uses an elastic effect of the spring for guaranteeing one-way flowing of water currents to realize adjustment of a water way angle in a valve ball so asto guarantee the practicability of the manual vacuum deflation safety valve.

The invention relates to a pipeline bridge type filtering system, which is provided with a first oil port and a second oil port, comprises an oil filter and certain number of one-way valves, and is characterized in that the first oil port and the second oil port are connected with a tee pipe respectively, one branch of each tee pipe is connected with an inlet of the oil filter through a positive one-way valve, and the other branch of each tee pipe is connected with an outlet of the oil filter through a reverse one-way valve. The pipeline bridge type filtering system is applied to a closed system, and can ensure the one-way flow of the oil filter when a motor rotates positively and reversely, effectively filter dirt in hydraulic oil so that the filtered dirt cannot return to a pump or the motor when the dirt flows back in a reverse direction, reduce the fault rate, and improve the safety of the whole system.