128 results about "Ballcock" patented technology

The invention discloses an integrated self-adaptive damping deep hypothermia two-stage gas-liquid separation device which is characterized by comprising a first-stage pre-separation chamber, a second-stage pre-separation chamber, a third-stage pre-separation chamber and a second-stage pre-separation chamber, the secondary fine separation chamber is used for performing gravity fine separation on the pre-separated gas; the floating ball valve is arranged at a gas outlet in the secondary fine separation chamber and is used for opening or closing the gas outlet according to the liquid level height in the separation chamber; the self-adaptive damping mechanism comprises a permanent magnet which is fixed on a mechanical transmission connecting rod of the ball float valve; and the damping piece is fixed on the inner wall of the secondary fine separation chamber and is used for applying damping force opposite to the moving direction of the permanent magnet to the permanent magnet. Damping force generated by a non-mechanical contact type damping mechanism is utilized, the influence of the deep hypothermia dynamic working condition on the working stability of the floating ball type liquid level control device is greatly reduced, meanwhile, the problem that a damping device loses efficacy in the deep hypothermia environment is effectively solved, and the safety and economical efficiency of a deep hypothermia system are remarkably improved.

The invention discloses a water tank water feeding and discharging anti-blocking device which comprises a domestic water tank and an industrial water tank, water inlet valves are fixedly arranged at the top end of the domestic water tank and the top end of the industrial water tank correspondingly, and the bottom ends of the two water inlet valves fixedly communicate with guide pipes correspondingly. According to the device, the floating ball valves are arranged at the water inlet ends in the domestic water tank and the industrial water tank, so that water feeding is stopped when the water level in the water tanks reaches a certain height, the situation that water leaks out of a pipeline after the water tanks are full of water, and consequently water resource waste is caused is avoided, and the effect of saving water resources can be achieved; according to the technical scheme, one original water outlet nozzle is changed into two water outlet nozzles, water in the domestic water pipe communicated with one water outlet nozzle is used as domestic water, the water in the domestic water tank is conveniently guided into the industrial water tank through the backflow pipe communicated with the other water outlet nozzle, and then the water inlet efficiency of the industrial water tank is improved.

The utility model discloses an energy -saving sintering machine waste heat recovery device relates to sintering machine technical field, including water tank, the top fixedly connected with float ball valve and liquid level detection mechanism of water tank, and water tank bottom and one side are fixedly connected with water delivery pipe and the communicating pipe respectively, and the one end fixedly connected with recovery subassembly of communicating pipe, and recovery subassembly is surrounded and is provided with the outer thermal -insulated cover, and recovery subassembly includes recovery main part and the smoke pipe main body of its matched setting, and the inboard fixedly connected with the fairwater of recovery main part. Through the heat conducting layer of concentration department reaches the effect of the concentration and heat conduction to the flue gas in recovery main part, through the effect of the convenient recovery main part along its outward flow through the flow guide port, through the effect of the concentration flue gas heat in the water pipe main body outside position through the heat collection cover, through the effect of the storage water source in the water tank through the water pipe main body, the communicating seat and the water injection pipe.

The utility model relates to the technical field of floating ball valves, and discloses a low-pressure pipeline water outlet floating ball valve control device which comprises a valve body, the top of the valve body is fixedly connected with a cylindrical shell, the outer wall of the cylindrical shell is fixedly connected with an external water pipe, the external water pipe is communicated with the cylindrical shell, the top of the cylindrical shell is movably connected with a cover plate, and the outer wall of the cylindrical shell is communicated with the cover plate. The top of the cover plate is fixedly connected with a second threaded ring. According to the low-pressure pipeline water outlet floating ball valve control device, through cooperative use of a ball body, a sliding rod, a gear, a half-toothed plate and a sliding groove, when the sliding rod drives the ball body to ascend, the half-toothed plate can be driven to descend through the gear, so that the half-toothed plate blocks a first circular groove in the right side of the valve body; at the moment, water flow can enter the cylindrical shell through a second circular groove and a connecting ring, the water flow can continuously flow to a place needing water supply through an external water pipe, at the moment, the connecting pipe can be directly replaced, and therefore the effect that the connecting pipe can be directly replaced without closing a water source is achieved.

The utility model discloses a multifunctional water tank of cooling relates to water tank technical field, including box, coil evaporator, water inlet pipe, drain pipe, overflow pipe, water supplementing mouth and float ball valve, the inside of box is provided with at least one coil evaporator, and the coil evaporator has import joint and export joint, and import joint and export joint are located in the one side outer wall of box and with the inside intercommunication of coil evaporator, and the one end of box is provided with water inlet pipe, drain pipe, overflow pipe and water supplementing mouth, and water inlet pipe, drain pipe, overflow pipe and water supplementing mouth are communicated with the inside of box respectively, and the inside of box is located at water supplementing mouth and is provided with float ball valve. In the utility model, through with the integration design of coil evaporator and water tank, form coil evaporative heat exchange system, has realized efficient heat exchange, compares traditional heat exchange mode, and heat exchange efficiency improves about 30%, and the equipment adopts compact design, and the installation space is saved.

The utility model discloses a floating ball valve of a cooling tower, which comprises a valve body, a water inlet arranged on one side of the valve body, a water outlet arranged at the bottom of the valve body, a floating ball rod arranged on one side of the valve body, a floating ball fixedly connected with the tail end of the floating ball rod, and a sewage disposal device arranged inside the water outlet. The adjusting device is arranged at one end of the floating ball rod away from the floating ball. The utility model relates to the technical field of floating ball valves, and the floating ball valve of the cooling tower realizes the automatic cleaning of the inner wall of the floating ball valve while water enters through the matching of a vertical rod, a scraping plate, a fixed seat, a fixed rod and a turbine, and solves the problems that some dirt is possibly attached to the inner wall of a floating ball valve of a traditional cooling tower after long-time use, and the inner wall of the floating ball valve is not easy to clean after a large amount of dirt is accumulated. The water outlet of the floating ball valve can not discharge water according to the normal water yield, so that the water storage time is prolonged, and the cooling progress of the cooling tower is influenced.

This invention relates to the field of fire protection and water supply technology, and provides a constant pressure opening automatic air vent valve, including a main valve body, a check valve assembly, a float valve assembly, and a drip valve assembly. The main valve body is divided into upper and lower chambers. The lower chamber houses the check valve assembly, which sets the opening pressure by adjusting the preload of the adjusting spring. This allows the valve to open and vent when the pressure is higher than the set pressure, and automatically close when the pressure is lower, preventing the outflow of the medium or the reverse infiltration of external gas. The upper chamber houses the float valve assembly, which includes a float, a gas diversion plate, and a gas guide cup. The diversion plate has multiple air passages, and the guide cup has circumferentially opened bypass holes, forming a gas flow channel with the inner wall of the valve body. Some gas, after being diverted and guided, enters the gas guide cup and acts on the float, avoiding direct impact on the float and eliminating oscillation. The float rises and seals the outlet when filled with liquid. A drip valve is located at the lower position of the valve body for automatic or manual drainage of accumulated water when the pressure decreases.

This utility model belongs to the field of electric steam oven technology, and particularly relates to a variable frequency electric steam oven, including an outer shell, a variable frequency control panel installed on the front of the outer shell, support foot tubes fixedly installed around the bottom of the outer shell, adjustable feet installed at the bottom of the support foot tubes, a steam outlet connected to the top of the outer shell, and a water inlet fixing bracket fixedly installed at the bottom of the outer shell. The other end of the water inlet is connected to the inlet of the auxiliary water tank float valve, and a clamp blind plate sleeve is installed on the top of the auxiliary water tank. This variable frequency electric steam oven, through heating elements installed on the inner wall of a square body under a vertical cylindrical or elliptical cavity, concentrates the heating area around the cavity in the middle of the heating water tank, allowing the water in the heating tank to quickly absorb heat in this area and reach boiling. Simultaneously, the cylindrical or elliptical cavity provides a vertical exhaust channel for steam. Since steam is less dense than water, buoyancy allows the steam to be discharged more smoothly. Concentrated boiling and vertical exhaust accelerate phase change, improving steam generation efficiency.

Evaporative coolers and components therefor that may be used at any of a variety of mounting angles without compromising function or requiring complex and custom adjustments based on a particular mounting angle. In one embodiment, a reservoir for an evaporative cooler includes a water collection basin, a float valve assembly including a float valve housing, a float valve, a lift arm pivotably coupled to the float valve, and a float coupled to the lift arm, a pump, and a drain valve, the pump and the drain valve each being within the water collection basin.

1. Name of the product in this design: Float Valve (Top Inlet). 2. Application of this design: This design is used as a valve switch for controlling water level. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

This utility model relates to the field of float valve technology, specifically an automatic water replenishment valve driven without differential pressure. It includes a float, a level adjustment latch on one side of the float, a blind plate on one side of the level adjustment latch, a rotating block at the bottom of the blind plate, a connecting pipe I on one side of the rotating block, and a fixing block at the bottom of the connecting pipe I; a connecting pipe II on one side of the fixing block, and triangular locking blocks on both sides of the connecting pipe II. The beneficial effects are: when the connecting pipe II is inserted into the limiting groove, the triangular locking blocks are pressed back into the installation groove I, and the installation is completed when the triangular locking blocks are locked into the limiting groove; when the squeezing block presses the triangular locking blocks into the installation groove I, and then pulls them outwards to complete disassembly; when the liquid level drops, the float drops, and the rotating block at the bottom of the blind plate rotates on the fixing block, causing the blind plate to open, allowing the liquid to flow out through the connecting pipe I without resistance; the float floats to a predetermined height, and the blind plate completely blocks the outlet, maintaining a relatively constant liquid level in the downstream container.

The utility model belongs to the technical field of exhaust valves, and particularly relates to a graded supercharged exhaust valve which comprises a valve body shell, a sealing seat is fixedly mounted on the upper surface of the valve body shell, a discharge cylinder penetrates through the upper surface of the sealing seat and is fixedly connected with the upper surface of the sealing seat, a flange joint is arranged at the bottom end of the valve body shell, and a movable rod is movably mounted in the sealing seat. A floating ball is fixedly installed at the end of the movable rod, a push rod matched with the floating ball is arranged in the valve body shell, and an adjusting mechanism is arranged in the valve body shell. By arranging the adjusting mechanism, the exhaust valve can achieve pressure adjustment of different levels according to system requirements, high flexibility is achieved, when more liquid is needed to push the floating ball to trigger exhaust, the grading pressurization effect can be achieved only by simply rotating the screw, the exhaust valve can adapt to various complex and changeable fluid control systems, and the exhaust valve is suitable for various fluid control systems. The opening pressure of the exhaust valve is accurately controlled by adjusting the position of the movable seat, so that the specific requirements of the system are met.

A purification mechanism for a vacuum system in an extruder includes a housing, a water supply tank, a water storage tank, and a connecting pipe. The housing contains a water seal layer. The top of the housing has an inlet pipe for connecting to the extruder's exhaust gas source and an exhaust pipe for connecting to the vacuum system. The downstream end of the inlet pipe extends downwards into the water seal layer. An overflow port, adapted to the height of the water seal layer, is located on the side wall of the housing. A filter frame is installed on the top of the water storage tank, below the overflow port. The water supply tank is located above the housing and connected to it via a float valve, the float of which floats on the water seal layer. The upstream end of the connecting pipe is connected to the bottom of the water storage tank, and the downstream end supplies water to the water supply tank. A water pump is installed on the connecting pipe. This invention has a simple structure, low operating cost, and can meet the need for removing impurities from extruder exhaust gas for extended periods.

The invention belongs to the technical field of check valves, and particularly relates to a floating ball type check valve which comprises a valve body, a mounting seat, a floating ball shell and a hollow floating ball, the floating ball shell is rotationally assembled through a spherical seat on the mounting seat, and a ball is arranged between the spherical seat and a ball head of the floating ball shell, so that the floating ball shell can be automatically adjusted to be vertical when the valve body is inclined; a through hole communicated with the inlet, a spherical cavity for containing the floating ball and a through groove communicated with the outlet are formed in the floating ball shell, a branch flow channel extending to the sealing face of the valve seat is formed in the inner wall of the through hole, the branch flow channel can assist in pushing the floating ball to be opened during forward flowing, and a multi-stage staggered hole type throttling disc is arranged on the inner side of the outlet end. The problems that a traditional floating ball valve is not tight in sealing, difficult to open at low pressure and prone to being impacted by a water hammer in an inclined installation environment are solved, and the novel floating ball valve has the advantages of being reliable in sealing, sensitive in response, capable of adapting to a complex installation environment and the like.

The utility model relates to test equipment technical field, concretely relates to a kind of corrosion-resistant long-term constant-temperature heating water bath box. Including preheating water tank and water bath box, preheating water tank is connected with at least two water bath boxes by pipeline;The inside of preheating water tank and water bath box is provided with heating pipe, and the heating pipe is electrically connected with heater;The inner wall of preheating water tank and water bath box is equipped with anticorrosive layer, and the outer wall is equipped with insulating layer;Preheating water tank top is provided with sealing cover, and preheating water tank upper portion is communicated with water inlet pipe, and water inlet pipe one end is inserted into preheating water tank and is connected with float ball valve;The inside of water bath box is fixedly provided with test piece support plate, and water bath box outside is provided with support frame, and the liquid level sensor and temperature sensor located in the inside of water bath box are fixedly provided on the support frame. The utility model can effectively improve its corrosion resistance by increasing corrosion-resistant layer;Meanwhile, the water supplied to water bath box is preheated, to avoid the water supplied to destroy the high-temperature water environment in water bath box.

The invention is suitable for the technical field of auxiliary equipment maintenance of a hydrogen-cooled generator set, and provides a method, a device and equipment for verifying the function of a floating ball valve and a storage medium, and the method comprises the following steps: on the premise that a generator set is in a non-power-generation operation state and preset hydrogen pressure is maintained in a generator, executing verification operation on a target floater oil tank; the verification operation comprises the following steps: isolating an oil discharge pipeline and an oil inlet pipeline of the target floater oil tank; the target floater oil tank is filled with oil to an initial liquid level higher than a preset closing liquid level of the floating ball valve; reopening the oil discharge pipeline; the liquid level change of the target floater oil tank is obtained; and the functional state of the floating ball valve is determined based on the liquid level change. According to the scheme, preventive verification can be realized, and equipment operation hidden dangers are avoided.

The utility model discloses an automatic water draining device of a generator hydrogen dryer. The automatic water draining device comprises a floating ball barrel body, a floating ball and a floating ball valve rod assembly, the floating ball barrel body is cylindrical, the floating ball is arranged on the upper half portion in the floating ball barrel body, the floating ball is hollow, and the bottom of the floating ball is provided with internal threads and fixedly connected with the floating ball valve rod assembly. The floating ball valve rod assembly comprises a valve rod, a valve seat and a valve rod support. One end of the valve rod is connected with the floating ball, and the other end is connected with the valve rod support; a valve element is fixedly connected to the outer side of the middle of the valve rod. The valve core is hermetically connected with the valve seat; a baffle is arranged at the bottom of the floating ball barrel body and fixedly connected with the floating ball barrel body, a cavity is formed between the baffle and the barrel body base, the valve rod support is arranged in the cavity, and a round hole is formed in the center of the baffle and allows the valve rod to penetrate through. A floating ball supporting structure is changed, the floating ball floats along with the liquid level and can drive the valve rod to act, and the problem that the floating ball cannot float upwards due to corrosion of a lever support structure is solved.

The utility model provides an intelligent flow dual-control remote control floating ball valve, which relates to the technical field of floating ball valves, and comprises a valve body, a main filtering system and a filtering monitoring system are arranged in the valve body, the main filtering system comprises a backflow prevention component, and the upper end of the backflow prevention component is connected with a valve membrane; the filtering monitoring system comprises a valve cover, the two ends of the valve cover are connected with a floating ball valve and a floating ball assembly respectively, the flashboard electric control part is connected with a floating ball switch water level controller, and the floating ball switch water level controller drives a worm part to rotate; the utility model has the beneficial effects that the floating ball switch water level controller is arranged, and when the water level reaches a set height, a floating ball of the floating ball assembly is lifted by a water body, so that the flashboard is driven to close the water cavity channel; the floating ball switch water level controller is controlled through the water level sensor, when the water level reaches the set height and the floating ball assembly fails, the floating ball switch water level controller drives the flashboard to close the water cavity channel according to the height of the water surface, and therefore the water level can be comprehensively controlled in two modes.

A gas sampling pipe connector with drainage and gas washing functions belongs to the technical field of gas sampling and testing equipment and is used for high-quality gas sampling. The technical solution is as follows: the upper end of the drainage valve body is connected to the sampling pipe ball valve; one end of the valve core is connected to the valve core mounting hole on the side wall of the drainage valve body; the other end of the valve core is connected to the sampling connector through the valve core ball valve; the front end of the sampling connector is connected to the opening of the gas collection bag; a float ball is located above the drainage port at the lower end of the drainage valve body; the valve core contains two parallel gas collection bag inlet channels and a gas collection bag exhaust channel arranged vertically along its length; sealing balls and compression springs are arranged sequentially in opposite directions within the two gas channels. This utility model has a simple structure and is easy to use, realizing integrated operation of drainage, gas washing, and collection. The operation process is simple and convenient, shortening operation time, improving work efficiency, reducing the workload of operators, and eliminating the safety hazards of gas leakage.

The utility model relates to valve technical field, and disclose a kind of remote control float ball valve that can eliminate closing water hammer, including valve body, valve stem is inserted in the valve body interior, locking nut is arranged on the valve stem outer surface, sealing ring pressing plate is movably attached on the locking nut upper side outer surface.This remote control float ball valve that can eliminate closing water hammer, by the remote control float ball valve that can eliminate closing water hammer, utilize the water pressure of pipeline upstream to promote valve flap to rise, open valve, supply water to water tank, when water tank liquid level reaches the required height, float ball rises under the action of buoyancy, to close valve, cut off pipeline to the discharge of water tank.Open valve, make pipeline continue to supply water to water tank, while valve body outlet rear side is provided with screw thread backflow preventer, after installing screw thread backflow preventer, screw thread backflow preventer opens when closing valve, inhale air, destroy internal vacuum, to avoid the water hammer effect of opening and closing valve to cause violent vibration and noise to valve and pipeline.

1. The name of the design product: float valve (5). 2. The use of the design product: valve switch for controlling water level. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The utility model discloses a novel anti-swing floating water tank floating ball valve, and relates to the technical field of valves. A novel anti-swing floating water tank floating ball valve comprises a valve body, a floating ball, a balance weight module, a first floating ball connecting rod, a second floating ball connecting rod and a locking module. The first end of the first floating ball connecting rod is connected with a valve rod of the valve; the second end of the first floating ball connecting rod is connected with the bottom of the floating ball; the lower end of the second floating ball connecting rod is fixedly connected with the top of the counterweight module; the upper end of the second floating ball connecting rod is fixedly connected with the locking module; and the locking module is locked on the first floating ball connecting rod. According to the novel anti-swing floating water tank floating ball valve, the original single-ball control of the water tank floating ball valve is changed into double-ball control of the single ball and the column ball bag; the cylindrical balloon is installed below the first floating ball connecting rod, the cylindrical balloon can limit left-right swinging of the floating ball after being filled with water, the situation that the floating ball swings to drive the valve rod to shake, and consequently the valve face is abraded is avoided, and the situation that water overflows from the water tank is effectively prevented.

The utility model discloses a reclaimed water recycling cooling tower which comprises a fan area, a laminate area and a water storage area, the fan area located at the top in the tower comprises a plurality of fans blowing upwards, the laminate area is arranged in the middle in the tower, a plurality of laminates are arranged in the laminate area, and the water storage area is located at the bottom in the tower. A floating ball valve group consisting of a plurality of floating ball valves is arranged in the water storage area, and an overflow port is formed in the tower wall above the water storage area; a reclaimed water lead-in port is formed in the tower wall corresponding to the layer plate area and is connected with an outlet of a reclaimed water pipe outside the tower, an inlet of the reclaimed water pipe is connected to a water outlet of a reclaimed water tank, and a water pump is arranged on the reclaimed water pipe. According to the cooling tower for recycling the reclaimed water, the discharged reclaimed water is recycled into the cooling tower, so that a large amount of tap water can be saved, the operation of the cooling tower is fully ensured, and particularly, about 30% of tap water can be saved in summer; and by increasing the depth of the water storage area, the water quantity redundancy in the cooling tower is increased, and a large amount of electric power and water resources are saved.

1. The name of the design product: float valve (2). 2. The use of the design product: valve for controlling water level. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The utility model discloses a floating ball anti-interference device for a water tank, which relates to the technical field of floating ball anti-interference and comprises a floating ball structure and a protection mechanism. The protection mechanism comprises a protection box plate which is detachably installed on the inner wall of the pump room water tank and used for protecting the floating ball structure from high-frequency oscillation along with waves. The floating ball structure is arranged between the protective box plate and the pump room water tank, the floating ball structure, the remote control floating ball valve and the gate valve are matched to control water inflow of the water inlet pipe, the connecting pipe and the water guide piece, the protective box plate blocks inflow turbulent flow, and the floating ball structure is prevented from being directly impacted; the buffering rod, the connecting lantern ring, the connecting block piston rod and the buffering pipe are matched to consume wave power, shaking of the stainless steel floating ball is reduced, the stainless steel floating ball is protected against high-frequency oscillation along with waves, consequently, the opening degree of the valve is frequently adjusted, severe fluctuation of pipeline water pressure is caused, and the maintenance frequency of people is reduced.

The utility model discloses an air cooler, which relates to the technical field of air temperature regulation and is used for solving the technical problems that manual intervention is needed for water feeding and temperature control of a traditional air cooler, and the operation convenience is poor. A protective net and a wet curtain are arranged at an air outlet and an air inlet of the main machine shell respectively, a water level sensor, a floating ball valve, a submersible pump, an adjusting valve assembly, a spraying water pipe assembly and a fan blade motor assembly are arranged in the main machine shell, the main machine shell utilizes a water pipe and the spraying water pipe assembly, and the adjusting valve assembly is arranged on the water pipe; according to the air cooler, automatic water feeding and temperature control can be achieved according to needs, manual operation is reduced, the air cooler is more convenient to use, and the technical problems that manual intervention is needed for water feeding and temperature control of a traditional air cooler, and operation convenience is poor are solved.

The utility model discloses an adjustable float ball valve relates to the float ball valve field, including the valve main part for controlling the flow of medium, and one end of valve main part is provided with the connecting pipe, the protection shell is located the side of connecting pipe away from the valve main part, and the inside of protection shell is provided with the water box, and one end of water box is connected with connecting pipe through the flexible pipeline, and the other end of water box is provided with the water outlet pipe, the float ball trigger mechanism is located the bottom of water box, and when liquid level reaches the preset height, will signal transmission to external controller, the trigger adjustment mechanism is located the top of water box and is located on the protection shell, is used for adjusting the height of float ball trigger mechanism. The utility model can realize the accurate control to liquid level height, and is convenient for according to different working condition demand and carries out the quick flexible adjustment again, expands the amplitude of adjustment, improved the precision of adjustment to the convenience of operation, has good application reliability and practicality.

The utility model discloses a plug-in height control device for pouring concrete on the column side of a steel reinforced concrete column, which belongs to the technical field of constructional engineering concrete construction and comprises a diversion galvanized steel pipe, a stainless steel plate receiving port, an angle steel support frame, an alarm device box, a connecting steel pipe, a floating rod clamping piece, a floating ball rod, a floating ball valve, a contact sensor and a rotating shaft. The stainless steel plate collecting port, the flow guide galvanized steel pipe and the angle steel supporting frame assembly are utilized, so that scientificity and reasonability of the plug-in device are improved; the floating ball principle is utilized to solve the problem of insufficient concrete pouring height or over-pouring concrete loss caused by blind point concrete pouring of workers, the concrete pouring efficiency is improved, and the effects of reducing material waste and manpower consumption, reducing damage to steel columns and the like are remarkable. Meanwhile, the process is simple, operation is convenient, installation and removal are convenient, the turnover performance is high, and the pouring quality and efficiency of the concrete in the section steel column are greatly facilitated and improved.

The utility model discloses an automatic water replenishing device of anaerobic reaction tank positive and negative pressure protector relates to anaerobic fermentation technical field, including water replenishing tank and positive and negative pressure protector, the top one side of water replenishing tank is connected with the inlet pipe, and one end that the inlet pipe is located in water replenishing tank is connected with the float ball valve, and the bottom of water replenishing tank is connected with positive and negative pressure protector through liquid supply pipe, and the liquid pump is connected in series on the liquid supply pipe, the outside fixed connection of positive and negative pressure protector has the transparent liquid level tube that communicates with its inner chamber, both ends of transparent liquid level tube are equipped with liquid level sensor, and liquid level sensor and liquid pump are connected with controller respectively, and the controller is configured as according to two liquid level sensor's signal control liquid pump opening and closing. This automatic water replenishing device of anaerobic reaction tank positive and negative pressure protector can realize accurate, fast water replenishing, avoids the positive and negative pressure protector and causes marsh gas leakage because of water shortage, and protects the safety of anaerobic reaction tank.

This invention belongs to the field of check valve technology, specifically a float-type check valve, including a valve body, a mounting base, a float housing, and a hollow float. The float housing is rotatably assembled via a spherical seat on the mounting base. A ball bearing is provided between the spherical seat and the ball head of the float housing, allowing the float housing to automatically adjust its verticality when the valve body is tilted, maintaining its central axis perpendicular to the horizontal plane. The float housing has a through hole communicating with the inlet, a spherical cavity accommodating the float, and a through groove communicating with the outlet. A branch channel extending to the valve seat sealing surface is opened on the inner wall of the through hole, which can assist in pushing the float open during forward flow. A multi-stage staggered-hole throttling disc is provided on the inner side of the outlet end to reduce the reverse flow velocity. The float housing adopts a split plug-in structure. This invention solves the problems of poor sealing, difficulty in opening under low pressure, and susceptibility to water hammer in traditional float valves installed at tilted angles. It has advantages such as reliable sealing, sensitive response, and adaptability to complex installation environments.