429results about How to "Regulating pressure" patented technology

The invention belongs to the technical field of preparation of boron carbide ceramics, and particularly relates to a preparation method of high-purity porous boron carbide ceramics based on high-frequency induction heating, under the condition that a sintering aid is not added, a plunger is forced to move downwards due to volume expansion caused by CO2 generated by a melt, so that boron carbide powder is pressurized, the effect of hot pressing sintering can be achieved, and the effect of high-purity porous boron carbide ceramics can be achieved. The problems of low yield and high cost caused by the use of a hot-pressing sintering furnace can be avoided, the comprehensive performance of the prepared boron carbide ceramic can be improved, the process is easy to control, and the method is suitable for mass production of the boron carbide ceramic round rod for the high-temperature gas cooled reactor nuclear control rod; the prepared boron carbide ceramic has the advantages of pure phase, high porosity, uniform pore structure and stable mechanical property, especially has very good pore connectivity, and can ensure timely discharge of helium and improve the safety of the nuclear control rod when being used as a high-temperature gas cooled reactor nuclear control rod.

The invention relates to coil bending forming equipment and a coil bending forming method. The coil bending forming equipment comprises a main support, a first pressing system, a heating system and a second pressing system. The first pressing system comprises a first carrier positioning mechanism and a first coil pressing mechanism, the first carrier positioning mechanism is used for being detachably connected with a carrier, and the first coil pressing mechanism is used for applying pressure to a coil in the carrier on the first carrier positioning mechanism so that the coil can be bent to a set shape; the heating system is used for heating a coil in a carrier on the first carrier positioning mechanism to a first set temperature; the second pressing system comprises a second carrier positioning mechanism and a second coil pressing mechanism, and the second carrier positioning mechanism is used for being detachably connected with the carrier; and the second coil pressing mechanism is used for pressing the coil in the carrier on the second carrier positioning mechanism so as to keep the coil in a set shape until the coil is cooled to a second set temperature. The coil bending device can improve the coil bending efficiency and the coil bending precision.

The invention discloses a pressure self-adaptive adjustment and control system for a silica gel catheter, and relates to the field of self-adaptive adjusting.The pressure self-adaptive adjustment and control system comprises a pressure sensing module, a data statistics module, a data processing module, a pressure prediction module and an intelligent control module. The reflux prevention pressure and the excessive prevention pressure of the silica gel catheter are accurately adjusted; the historical pressure comprehensive performance value and the real-time pressure comprehensive performance value are combined, so that the prediction accuracy is improved; the reliability of sensing data is ensured by monitoring whether the data transmission of each module is abnormal or not, when the data transmission is abnormal, a problem module can be quickly positioned, the troubleshooting and repairing speed can be accelerated, and meanwhile, the use safety of the silica gel catheter is improved.

The utility model relates to the technical field of spring type safety valves, and discloses a spring type safety valve capable of recovering media, which comprises a base flange plate, the top of the base flange plate is communicated and connected with a valve seat, the top of the valve seat is slidably connected with a recoil disc, the inside of the recoil disc is fixedly connected with a valve rod, and the valve rod is fixedly connected with a valve rod. The top face of the base flange plate is connected with a valve body in a screwed mode through bolts and nuts, and the top of the valve body is fixedly connected with a guide pipe. According to the spring type safety valve capable of recycling the medium, through the arrangement of the medium recycling and metering assembly, when the medium is subjected to pressure relief and export through the spring type safety valve, the medium flows out through the flow metering pipe, and a gas flow sensor arranged in the flow metering pipe monitors the flow of the medium; and the conversion controller converts the medium flow into a numerical value to be displayed on the flow display screen, so that the amount of the recycled medium can be accurately monitored, the production process is controlled and optimized, the cost control is improved, and the sustainability of the recycled medium is ensured.

The utility model provides an automatic sensing device suitable for orthopedic surgery. The automatic sensing device comprises a force sensor, a visual sensor and a drilling module which are used for being assembled on a mechanical arm of a surgical robot. Wherein the drilling module is used for assembling a drilling tool and pushing the drilling tool to execute drilling operation; the force sensor is used for detecting torque information of the drilling tool in the drilling operation; the visual sensor is used for acquiring image data of an operation area; wherein the force sensor, the visual sensor and the drilling module are respectively connected with a control system of the surgical robot; and the control system is used for receiving the moment information and the image data and controlling the drilling module to drill towards the surgical area at the target moment. By means of the device, the position and action of the drilling tool can be accurately controlled so as to assist a doctor in completing an operation, application in complex and fine operations is achieved, the complexity in the operation process is reduced, and the operation time is shortened.

The utility model belongs to the technical field of hemostasis devices, and particularly relates to a coronary angiography postoperative radial artery puncture part hemostasis device which comprises a winding belt, a plurality of air bags are arranged on the winding belt, inflation connectors are arranged on the air bags, the adjacent air bags are connected together through bridging parts and communicated with one another, and the other ends of the air bags are communicated with the inflation connectors. The utility model has the beneficial effects that: the air bag is arranged on the winding belt, the winding belt is sleeved on a hand by using the magic tape, and the air bag is inflated by using the inflator, so that the air bag tightly presses a puncture part, and the aim of effectively stopping bleeding is achieved; the degree of compression of the air bag on a puncture part can be adjusted by adjusting the inflation volume of the air bag, so that the pressure of the air bag can be adjusted according to specific conditions; due to the fact that the winding belt and the air bag are both made of transparent materials, the pressing condition of the air bag on a puncture part can be observed in the using process, the hemostasis condition can be known and observed clearly, and then the air inflation amount of the air bag is dynamically adjusted.

The utility model discloses a ventilation system of a crankcase, an engine and a vehicle. The ventilation system of the crankcase comprises the crankcase and a ventilation device, the venturi valve is provided with a first gas inlet, a first gas outlet and a desorption port; the supercharger is provided with a second air inlet and a second air outlet which are communicated with each other, the second air inlet is communicated with the external atmosphere, the second air outlet is communicated with the first air inlet, and the first air outlet is communicated with the second air inlet. Therefore, the first air inlet is communicated with the second air outlet, so that the pressure of the first air inlet is the same as that of the second air outlet, and the first air outlet is communicated with the second air inlet, so that the pressure of the first air outlet is the same as that of the second air inlet, and the supercharger can provide driving pressure for the Venturi valve; therefore, the ventilation system of the crankcase can adjust the pressure in the crankcase more accurately.

The invention discloses a plate flattening and shearing production line with high feeding precision and a using method, and relates to the technical field of plate flattening and shearing, the plate flattening and shearing production line comprises a plate flattening and shearing main body, a flattening chamber and a shearing chamber are formed in the plate flattening and shearing main body, and laser displacement sensors are mounted at outlets and inlets of the flattening chamber and the shearing chamber; acoustic sensors are mounted on the side walls of the flattening chamber and the shearing chamber; a top limiting module and a shearing module are mounted on the top wall of the shearing chamber, the top limiting module is used for fixing a plate from the top in the shearing process, and the shearing module is used for shearing the plate; a side face limiting module is installed on the side wall of the shearing chamber and used for fixing the plate from the side face in the shearing process. By installing the top limiting module, the side face limiting module and the shearing module, the problems that in the plate machining process, the feeding precision is low, the machining efficiency is low, flexibility is insufficient, and the machining quality is unstable can be solved.

The utility model provides a solid-state battery module, a battery pack and an energy storage device. The solid-state battery module comprises two end plates which are oppositely arranged, a battery lamination group which is clamped between the two end plates, and a plurality of connecting pieces, fixing plates are arranged on one side of at least one end plate at intervals; each connecting piece penetrates through the two end plates and the battery lamination group and is detachably connected to the fixed plate, at least one connecting piece is provided with an elastic piece, and the two ends of the elastic piece abut against the fixed plate and the end plate adjacent to the fixed plate respectively. According to the solid-state battery assembly disclosed by the utility model, the battery lamination pack is compressed by utilizing the elastic force of the plurality of connecting pieces and the elastic pieces, so that not only can full contact of battery interfaces be ensured, but also a certain space can be provided for bulging deformation of the battery lamination pack in the use process through compression of the elastic pieces, and thus the performance of a solid-state battery can be improved.

The invention provides an initial force self-adaptive railway vehicle coupler buffer device which comprises a shell, a buffer plate, a connecting rod, buffers, a pressure sensor, an adjusting plate, a front end plate, a rear end plate, an adjusting mechanism, an electromagnetic pipe, a magnet pipe, an isolation pipe, a baffle, a controller and a damping air bag. A magnetic mechanism is arranged at the front end to provide initial pulling force for the connecting rod and comprises an electromagnetic pipe, a magnet pipe and an isolation pipe, an adjusting mechanism is arranged between the adjusting plate and the rear end plate and can adjust the length of the buffer, and the buffer comprises an inner pipe, an outer sleeve, a damper and a spring and is further provided with a damping air bag and a controller. The coupler buffer solves the problem that the coupler buffer is easy to damage due to overlarge tension, the buffer performance and stability are improved, the coupler buffer can be effectively protected, the service life of the coupler buffer is prolonged, and the coupler buffer is suitable for connection buffer of railway vehicles.

The invention discloses dual-drive dry grinding equipment, which belongs to the field of grinding equipment and comprises a grinding cylinder, two ends of the grinding cylinder are respectively and fixedly provided with a grinding cylinder rotating shaft, a grinding rotor is arranged in the grinding cylinder, two ends of the grinding rotor are respectively and fixedly provided with a rotor transmission shaft, and the rotor transmission shafts and the grinding cylinder rotating shafts are concentric and non-coaxial and can relatively independently rotate. According to the grinding equipment, in the grinding process, the grinding cylinder can be rotated to drive a grinding medium to roll, the grinding efficiency is greatly improved, meanwhile, the grinding medium is evenly stressed on the inner wall of the grinding cylinder to shear and collide, generation of static electricity is reduced, and therefore hardening and accumulation of powder on the inner wall are reduced, and the powder is more evenly ground; by rotating the grinding rotor, higher power is provided for the grinding medium in the grinding inner cavity, so that the grinding efficiency is improved again, the rotor transmission shaft and the grinding cylinder rotating shaft are of a concentric and heteroaxial structure, the grinding cylinder and the grinding rotor can rotate and operate at different rotating speeds, the grinding device is suitable for operation under different working conditions, and the error-tolerant rate is higher.

The utility model discloses a gas saving secondary pressure reducing valve, which belongs to the technical field of valves, and comprises a pressure reducing valve body and a flow adjusting shell, an adapter is arranged between the pressure reducing valve body and the flow adjusting shell, a flow control adjusting mechanism is arranged on the flow adjusting shell, and an air inlet pressure gauge is fixedly arranged at the front part of the flow adjusting shell. According to the pressure reducing valve, the pressure of gas in the pressure reducing valve body is adjusted through the valve switch, the two protective shells are closed to be arranged on the outer side of the valve switch, the valve switch is extruded and fixed through the rubber block on the inner side of the valve switch, and meanwhile the outer side of the valve switch is protected; and a bolt is driven by the elastic force of a spring to be inserted into an insertion hole to fix the fixed seat and the L-shaped connecting seat, so that the two protective shells are fixed, the valve switch is protected and locked, a user is effectively prevented from randomly adjusting the pressure, and the practicability is good.

The utility model discloses an unmanned aerial vehicle landing protection device which comprises a supporting frame, a pressure relief mechanism is arranged on the supporting frame, the pressure relief mechanism comprises a transverse rod, an air bag, a bottom sleeve, a pressure relief pipe, a one-way mechanism, a threaded ring, a threaded section, a sealing sleeve and a pressure adjusting mechanism, the transverse rod is installed on the supporting frame, the air bag is connected to the transverse rod in a sleeved mode, and the bottom sleeve is arranged on the bottom sleeve. The one-way mechanism can be opened to allow gas to be discharged through the gas outlet pipe, so that impact force is relieved, the unmanned aerial vehicle is protected against damage, the pressure adjusting mechanism allows an operator to adjust pressure relief pressure according to needs, the compression degree of a spring is changed by rotating a threaded section, and then sealing pressure is adjusted. The design not only improves the safety of the unmanned aerial vehicle during landing, but also enhances the adaptability and flexibility of the equipment.

The invention discloses a hot blast stove baking control system, control method and equipment and a storage medium. The hot-blast stove baking control system comprises at least one hot-blast stove communicated with a blast furnace and providing heat energy for the blast furnace; a pressure detection module and a temperature detection module are arranged in the hot-blast stove and used for detecting pressure and temperature in the hot-blast stove; the flue header pipe is communicated with the hot blast stove, and a flue valve is arranged on the flue header pipe; when the flue valve is opened, waste gas in the hot blast stove is discharged; the input end and the output end of the waste heat recovery module are communicated through a bypass pipeline, and a bypass valve is arranged between the input end and the output end; the quick-opening valve is arranged on the flue header pipe; the input end of the flue gas induced draft fan is communicated with the output end of the waste heat recovery module, and the output end is communicated with the chimney; waste gas in the hot-blast stove is led out; the control module is used for adjusting the opening degrees of the flue valve, the bypass valve and the quick-opening valve and the frequency of the smoke induced draft fan according to the pressure and the temperature, and then the negative pressure value in the hot-blast stove is adjusted. The negative pressure adjusting effect of the hot blast stove is improved.

The utility model discloses a green plant spraying device which comprises a communicating pipe, the communicating pipe is installed on external equipment, an adjusting mechanism is arranged on the communicating pipe, the adjusting mechanism comprises a water spraying mechanism, a pressure adjusting pipe, a water inlet pipe, a sealing mechanism, a threaded pipe, an inner pipe, a follow-up rod, a pressing sleeve and a push spring, the water spraying mechanism is installed on the communicating pipe, and the pressure adjusting pipe is installed on the communicating pipe. The pressure adjusting pipe is installed on the communicating pipe, one end of the water inlet pipe is connected to the water inlet equipment, the other end of the water inlet pipe is connected to the pressure adjusting pipe, the sealing mechanism is installed on the pressure adjusting pipe, and the design of the adjusting mechanism enables a user to flexibly adjust the flow speed and pressure of water flow according to the requirements of green plants. According to the design, the opening degree of the one-way disc can be automatically adjusted according to the water flow speed under the action of the spring, damage to plants caused by too large water flow is avoided, and through the adjusting mechanism, it is guaranteed that the greening plants obtain a proper amount of water, and waste of resources is avoided.

The invention discloses a pipe strength performance detection device, and belongs to the technical field of pipe detection. The device mainly comprises a base, at least two sets of first supporting legs are fixedly installed on the base, and an upper supporting base is fixedly installed on the first supporting legs; the lower detection assembly is arranged on the base, the lower detection assembly comprises a clamping table placed on the base, two sets of motors are fixedly installed on one side of the clamping table, clamping rods are fixedly installed at the output ends of the motors, and the other ends of the clamping rods are movably connected with the clamping table through bearings. According to the pipe strength performance detection device disclosed by the invention, the upper supporting seat, the second weight, the limiting block, the limiting groove and the hinging piece are arranged, so that the hinging piece and the position of the second weight can be limited through the limiting groove when the pressure resistance of the pipe is detected, and the pressure of the weights on the pipe is adjusted; the scene that the laid pipe is subjected to higher pressure during use is simulated.

The conveying device comprises a supporting base, conveying rollers, a dust removal frame and a winding frame, a pair of clamping plates are installed on the surface of the supporting base and are symmetrically arranged, a connecting cover is installed at the tops of the clamping plates, the conveying rollers are rotationally arranged between the clamping plates and are symmetrically arranged, and the dust removal frame is connected with the winding frame. A straight groove is formed in the clamping plate, and the dust removal frame is movably arranged in the straight groove; compared with the prior art, real silk fabric can be extruded with the bottom of the transmission ring in the transmission process, meanwhile, the air pressure in the expansion pipe can be adjusted, the pressure on the surface of the real silk fabric in the transmission process can be adjusted, the stretching effect can be achieved, wrinkles in the transmission process are avoided, the transmission ring is prevented from deforming, and therefore the transmission efficiency is improved. And the arc-shaped shaft can deviate along with the arc-shaped shaft, the cloth in the conveying process is knocked, the dust removal effect is achieved, dust collection is conducted in cooperation with external equipment, and dust residues are reduced.

The utility model relates to the related technical field of rope return tensioning hydraulic pressure, in particular to a rope return tensioning hydraulic system which comprises a containing box, an oil tank, an oil pipe, a motor and an oil pump, the motor is installed on the inner side surface, and the oil pump is connected to the surface of one side of the motor. According to the rope return tensioning hydraulic system, the motor is started to drive the oil pump to extract hydraulic oil from the oil tank and pressurize the hydraulic oil, the hydraulic oil is conveyed to all parts of the system, the hydraulic oil is primarily filtered through the coarse filter, large particles and impurities are removed, and follow-up precise elements are protected; fine impurities of the hydraulic oil are further removed through a fine filter, it is ensured that the cleanliness of the oil liquid meets the system requirement, when the system pressure fluctuates or the requirement is increased within a short time, the stored hydraulic oil can be rapidly released, the system pressure can be stabilized, the real-time performance and stability of the tensioning function are ensured, and the hydraulic oil is often used for emergency shutdown and overhaul of the system; and a quick-response safety guarantee measure is provided.

The invention discloses a closed air supply unit rack for simulating a vehicle air suspension, which comprises an air storage tank A, an air storage tank B and an air storage tank C. The air storage tank A is used for simulating an air spring; the gas storage tank B is used for simulating the volume of a vehicle gas storage tank An air spring interface of the closed air supply unit is connected with the output end of the air storage tank A; the output port of the closed gas supply unit is connected with one input end of a gas storage tank B; the input port of the gas storage tank A is connected with the output end of a high-pressure gas source through an electromagnetic valve A; and the other output port of the gas storage tank A is connected with one input port of the gas storage tank C through the electromagnetic valve B. After the design of the air suspension system is completed, the working condition of the whole vehicle can be simulated, parameters of an air spring and parameters of an air storage tank in the air suspension system are matched, closed air supply unit software is debugged, the lifting rate of the air suspension is evaluated, and the development period and development cost of the air suspension system are reduced.

This utility model discloses a wax pressure-adjustable waxing machine, relating to the technical field of waxing machines. It includes a base and two vertical plates. Two vertical plates are fixedly disposed on both sides of the upper surface of the base. A wax storage shell is fixedly disposed between the upper sides of the two vertical plates. A feeding pump is fixedly disposed on one side of the lower surface of the wax storage shell. The inlet of the feeding pump extends into the interior of the wax storage shell. A flexible hose is fixedly connected to the outlet of the feeding pump. A through-type pressure sensor is fixedly disposed on the lower side of the flexible hose. A wax spray head is fixedly disposed on the lower side of the through-type pressure sensor. A reciprocating screw is rotatably disposed between the two vertical plates. A slider is movably sleeved on the wall of the reciprocating screw. One side of the slider is fixedly connected to the wax spray head. This utility model can automatically adjust the waxing pressure to maintain uniform waxing and can stir the stored wax during the waxing process to maintain the uniformity of the wax.

The utility model relates to the technical field of film laminating devices, in particular to a glass panel film laminating device which comprises a conveyor and a glass plate, the glass plate is located on the upper surface of the conveyor, a supporting plate is fixedly assembled on the upper surface of the conveyor, a rotating roller is rotatably connected to the inner wall of the supporting plate, a protective film is wound on the outer circumferential face of the rotating roller, and the protective film is fixedly assembled on the conveyor. A U-shaped plate is fixedly assembled on the upper surface of the conveyor, a first electric push rod is fixedly assembled on the upper surface of the U-shaped plate, and a connecting plate is fixedly assembled at the output end of the first electric push rod. By means of the air pump, the hose, the hollow plate, the spray pipe and the like, when a glass plate needs to be coated, air flows through the hollow plate and is exhausted by the spray pipe, and when the glass plate passes, the exhausted air purges the glass plate, so that the purpose of cleaning the surface of the glass plate is achieved, and it is guaranteed that a protective film can be normally attached to the glass plate; and the protection effect of the protection film is improved.

The application discloses a geothermal energy adjustable power generation system based on carbon dioxide working medium, which comprises a power generation well, a temperature and pressure adjusting device connected through a pipeline, a gas-liquid heat exchange device connected with the temperature and pressure adjusting device at one end and connected with a steam superheating device at the other end, a heat supply device and a turbine arranged on the steam superheating device, a power generation device connected with the turbine, the power generation device connected with the gas-liquid heat exchange device through a pressure adjusting device, a plunger pump connected with a recharging well at one end and connected with the gas-liquid heat exchange device through a refrigeration device at the other end. The system can further heat the carbon dioxide working medium after being converted into steam, thereby improving the temperature and pressure of the steam and the power generation efficiency of the turbine. Moreover, the output of the heat supply device is adjusted, the rotating speed of the turbine and the output power of the power generation device are adjusted, the adjustability of the power generation capacity is realized, and the defect of the vacancy of the technology in China is solved.

The invention provides a high-temperature superconducting magnet temperature equalization control method for circulating cold helium, and belongs to the field of superconducting magnet temperature control, and the method comprises the steps: calculating a difference value between a target temperature and an actual measurement temperature, and obtaining a steady-state error of each group of magnets; constructing a mathematical model of the cold helium cooling system according to a singular perturbation theory; a control target is determined, and the overall performance and stability of the cold helium cooling system are improved; and constructing a singular perturbation control model based on the variable universe Smith. According to the invention, the response speed and precision of the cold helium cooling system can be improved.

The utility model discloses an oil cylinder buffering device, and relates to the field of lorry-mounted crane air cylinders. An oil cylinder buffering device comprises a cylinder body, a slidable piston is arranged in the cylinder body, a piston rod is arranged at one end of the piston, and hollow structures are arranged in the piston and the piston rod. The supporting part is arranged at one end of the cylinder body and is used for blocking and limiting the end part of the cylinder body; the small hole or the thin seam of the throttling valve is arranged in the cylinder body, the flowing speed and pressure of oil can be effectively adjusted, so that stable braking and starting of a moving part are achieved, when the stroke of a piston is close to the end point, the closed part of oil is extruded out through the small hole or the thin seam of the throttling valve, resistance is generated, the moving part is gradually decelerated, and the braking speed of the moving part is increased. Meanwhile, when the hydraulic oil cylinder is started, hydraulic oil slowly enters a rodless cavity through a small hole or a gap of the throttling valve, the flow is gradually increased, and stable starting is achieved.

The utility model relates to the field of chip testing, in particular to a pressure-adjustable testing module, and adopts the technical scheme that the pressure-adjustable testing module comprises a testing seat, a plurality of placement tables which are arranged on the testing seat and are used for loading chips, a testing assembly which is arranged on the testing seat and is used for detecting the chips, and a driving device which is used for driving the testing assembly to move up and down, the pressure proportional valve is electrically connected with the controller, the pressure adjusting air cylinder is electrically connected with the pressure proportional valve, and the piston end of the pressure adjusting air cylinder is connected with the testing assembly. According to the invention, the test pressure can be adjusted according to the pressure required by chip detection, and the practicability and adaptability of the test module are improved.

The utility model provides a rolling device. The rolling device comprises a rolling mechanism, a first driving assembly and a second driving assembly. The rolling mechanism comprises a roller assembly and an elastic assembly, and the two ends of the roller assembly are rotatably connected to the elastic assembly through the axis; the elastic assembly is arranged between the driving end of the first driving assembly and the roller assembly, and the first driving assembly drives the roller assembly to move in the vertical direction; and the second driving assembly is in linkage connection with the first driving assembly, and the second driving assembly drives the rolling wheel assembly to move in the horizontal direction. According to the embodiment of the invention, the elastic assembly is arranged to provide buffering force in the process that the first driving assembly drives the roller assembly to move, so that the tab is prevented from being extruded due to excessive force under the condition that the roller assembly presses the tab, the problem that the tab rebounds or arches after being bent is avoided, and the product quality is improved.

This utility model discloses a pressure-controllable cupping device, relating to the field of cupping technology. The device includes a cupping jar, with a safety tube fixedly connected to one side. A positioning ring is fixedly connected to one end of the safety tube, and a fixing bracket is fixedly connected to the inner circumference of the safety tube. A threaded rod is movably connected to one side of the fixing bracket, and a sealing gasket that cooperates with the positioning ring is fixedly connected to the circumference of the threaded rod. A sliding plate is slidably connected to the inner circumference of the safety tube, and the threaded rod threadedly passes through the sliding plate. In this utility model, when the pressure inside the cupping jar is too high, air can enter the jar through the safety tube, maintaining stable pressure and improving safety. Simultaneously, rotating the threaded rod changes the pressure of the second spring, thereby adjusting the pressure inside the jar. This makes it convenient to use. Furthermore, moving the threaded rod moves the sealing gasket, allowing air to quickly enter the jar, facilitating quick and safe removal of the jar.

The utility model discloses a residence tap water leakage-proof device, which belongs to the technical field of tap water control devices and comprises an electromagnetic valve, and a water inlet of the electromagnetic valve is connected with a home-entry tap water main valve through a water pipe. The device is characterized in that a water outlet of the electromagnetic valve is connected with a water inlet of the water leakage detection valve through a water pipe, the water leakage detection valve comprises a main valve body, a water plugging ring, a plunger and a pressure adjusting mechanism, and the interior of a large-diameter water through hole of the main valve body is in sliding sealing fit with the water plugging ring; a conical through hole is formed in the circle center of the water plugging ring, a plunger is installed in the conical through hole, and the shape of the lower end of the plunger corresponds to that of the conical through hole. And the upper end of the plunger is fixedly connected with the inner wall of the large-diameter water through hole. Compared with the prior art, the utility model has the characteristic of preventing tap water from leaking when people go out.

The utility model relates to the technical field of regulating valves, in particular to a high-pressure-difference regulating valve which comprises a high-pressure-difference regulating valve body and a circular ring, the circular ring is fixedly connected in the high-pressure-difference regulating valve body and is fixedly connected with a cylinder through a bolt, a cleaning mechanism is arranged in the cylinder, a filter screen is fixedly connected to the inner wall of the cylinder, and the inner wall of the filter screen is fixedly connected with a valve rod. And the high pressure difference regulating valve main body is fixedly connected with the outer wall of the first sleeve. The handle drives the worm to rotate, the worm drives the worm gear to rotate, the worm gear drives the threaded cylinder to rotate, the threaded cylinder drives the screw to move, the height of the screw in the vertical direction changes during movement, the screw drives the sliding rod to slide, the sliding rod drives the square column to move, the square column extrudes the spring, and the spring deforms. The force of the spring for driving the porous valve element to move downwards under the action of elasticity changes, then pressure adjustment of the high-pressure-difference adjusting valve is achieved, and when the high-pressure-difference adjusting valve is used, the pressure of the high-pressure-difference adjusting valve can be conveniently adjusted according to actual use requirements.

A rice mill discharging port adjusting mechanism comprises a shell, a balance weight part, a linkage part and a pressure part are installed in the shell, the balance weight part comprises a flow adjusting rod and a rotating shaft, the rotating shaft is connected with the shell in a rotatable mode, the two ends of the rotating shaft penetrate out of the shell, and the two ends of the rotating shaft are fixedly connected with the flow adjusting rod. A pressure weight is connected to the flow adjusting rod in an interference fit manner and can move on the flow adjusting rod; the linkage part comprises a first connecting rod and a second connecting rod, the upper end of the first connecting rod is fixedly connected with the rotating shaft, and the lower end of the first connecting rod is hinged to the second connecting rod; the device has the advantages of being simple in structure, low in cost and convenient to use, the pressure weight is installed on the flow adjusting rod and can move on the flow adjusting rod, the pressure of the discharging port can be adjusted conveniently, the flow adjusting rod is installed on the rotating shaft, the rotating shaft is connected with the pressure plate through the first connecting rod and the second connecting rod, and the connecting rods are connected through the pin shaft. And an additional power structure is not needed for driving.