98 results about "Backwater valve" patented technology

The invention relates to a low-displacement steam box. The low-displacement steam box comprises an inner container, a water tank and an exhaust channel, and an exhaust port and a water inlet are formed in the side wall of the inner container. The water tank is provided with a water outlet connector and a water return connector. The low-displacement steam box also comprises a water inlet pipeline and an exhaust pipeline. The water inlet pipeline and the exhaust pipeline are adjacent to each other. One end of the water inlet pipeline is communicated with the water outlet interface. The other endof the exhaust pipeline is provided with a first water inlet branch and a second water inlet branch, a water inlet valve is arranged on the first water inlet branch, a water return valve is arrangedon the second water inlet branch, one end of the exhaust pipeline is communicated with the water return connector, the other end of the exhaust pipeline is communicated with an air inlet of the exhaust channel, and water in the water inlet pipeline can exchange heat with steam in the exhaust pipeline. Compared with the prior art, the amount of discharged steam can be reduced, the use experience ofa user is improved, meanwhile, the water in the water inlet pipeline can be preheated through the steam, and therefore the preheating time of the steam box is shortened, the time for heating water through a heating disc to generate steam is shortened, and the energy consumption of the steam box is reduced.

The invention discloses a textile cleaning machine, which comprises a main body of the cleaning machine, a cleaning room is arranged in the main body, and a water supply system and a return water system connected with the cleaning room; the return water system includes a return water pipe, a return water pump, a return water electromagnetic Valve, filter cavity and water spray pipe; the cleaning room is hollowed out, and there is an ultrasonic vibration device in the cleaning room; a blowing unit is installed in the body and below the cleaning room, and the blowing unit includes a main ventilation pipe, a compressed air pipe, a ventilation branch pipe, an air jet and a blower Electromagnetic valve; also includes a PLC controller and a liquid level sensor, the liquid level sensor is located in the cleaning room, the return water pump, the return water solenoid valve, the ultrasonic vibration device, the blowing solenoid valve and the liquid level sensor are respectively electrically connected or signal connected to the PLC controller. The invention can use mechanical equipment to clean textiles such as cloth and ready-made clothes, which saves manpower and improves efficiency; at the same time, water resources are recycled, water resources are saved, and production costs are also saved.

A return water valve of water-saving and temperature control type consists of shell, core body, shaft body, water inlet interface, and water outlet interface and temperature control element. It is featured as surrounding a seal cavity by shell, leading hot water pipe from shell external to cavity, leading cold return water pipe from shell external to cavity and connecting cold return water pipe to single-way valve through U form channel outlet on core body and connecting pressure converter set with conical opening to single-way valve then to U form channel outlet by passing through shell.

A temperature control differential pressure backwater tap with water saving function comprises a valve mechanism capable of realizing pressure sensing, temperature sensing and interlocking. When a user turns a backwater handle to open a backwater valve, residual cold water in a hot water pipe enters a temperature control cavity from the lower valve plate of the backwater valve. When the water temperature fails to reach a preset temperature, the valve mechanism formed by a temperature control member and the temperature control cavity is in an open status, and a cold water pipe and the hot water pipe are enabled to be communicated with each other. The cold water in the hot water pipe enters continuously the cold water pipe under the action of pressure. With the backwater process, the water temperature in the temperature control cavity increases gradually, and the temperature control member displaces due to thermal expansion. When the water temperature reaches the preset temperature, the displacement of the temperature control member 31 finally cuts off the connection between the water inlet of the temperature control cavity and the water outlet of the temperature control cavity, thereby completing the backwater process. At that time, the can uplift a water handle to get water of desired temperature.

The invention provides a device for testing hydrostatic seepage pressure of concrete under a temperature-variable condition. A pressure valve, a pressure meter and a reduced pressure valve are arranged at the top end of a testing tank, the pressure valve is connected with an external air pressure machine through a high-pressure air pipe, one side wall of the testing tank is a steel sealed test board, a conical bore is formed in the steel sealed test board, and a big end of the conical bore is located in the testing tank; and an air bin and a water bin are arranged in the testing tank, the air bin is located at the upper part of the water bin and is communicated with the water bin, heating bars are arranged in the water bin, a thermometer is arranged on the outer wall of the water bin, a water return valve is arranged on the side wall of the bottom of the water bin and is connected with a first water inlet valve on an external cold water circulating tank through a water return pipe, and a water outlet valve on the cold water circulating tank is communicated with a second water inlet valve at the top of the air bin. The device can be used for testing the seepage pressure of the concrete in a temperature-variable environment and is simple in structure and convenient to operate.

The invention discloses a cooling system capable of on-line cleaning a heat exchanger, which comprises at least two branches. Each branch comprises a heat exchanger and a water inlet drain valve. Both ends of the heat exchanger are respectively connected with a trunk water inlet pipeline and a trunk backwater pipeline through branch pipes, the trunk backwater pipeline is provided with a trunk backwater valve, and branch pipes on both sides of the heat exchanger are respectively provided with a water inlet valve and a backwater valve; the water inlet drain valve is arranged on the branch pipe between the heat exchanger and the water inlet valve; and the water inlet drain valve is connected with a drain pipe. According to the invention, the drain pipe and the drain valve are arranged on the branch pipeline, so that the cooling system capable of on-line cleaning the heat exchanger can on-line clean the heat exchanger by utilizing the original pipeline and valve of the cooling system so as to avoid offline cleaning, which is labor-consuming and time-consuming. In addition, the cleaning manner with the complicated water inlet or backwater pipeline switch equipment or the cleaning manner of adding a cleaning pipeline pump in the prior art is not required.

The invention discloses a solar water heater control system which comprises a heat storage water tank, a heat collector and a controller. A first temperature sensor, a water level sensor and an auxiliary electric heating device are arranged in the heat storage water tank. A water filling valve is arranged on a water inlet pipeline. A water supply pump, a one-way valve and a water flow switch are arranged on a water supply pipeline. A second temperature sensor and a backwater valve are arranged on a backwater pipeline. A third temperature sensor is arranged on a hot water outlet pipeline of the heat collector, and a circulating water pump is arranged on a hot water inlet pipeline. The controller receives signals collected by the temperature sensors, the water level sensor and the water flow switch so as to achieve the starting and stopping control over the water filling valve, the water supply pump, the one-way valve, the backwater valve and the circulating water pump and the on-off control over the auxiliary electric heating device, thereby achieving the functions of automatic water filling, automatic heating, auxiliary electric heating, instant heating and the like of a solar water heater. The solar water heater control system can be convenient to use, accurate in controlling and high in automatic degree.

The invention relates to a resistance type electric heating hot water boiler, belonging to the technical field of a boiler. A boiler cylinder body is formed by welding a boiler cylinder, a front seal head, and a rear seal head; a gas collecting pot is connected with a water outlet valve by a flange; an electric heating pipe protecting cover and a boiler supporting base are welded at the outer part of the boiler cylinder; an electric heater is connected to an electric heating pipe interface by bolts, a safety valve is fixed on a safety valve pipe base by bolts; a pressure gage interface, an electric heating pipe interface, the safety valve base, a water outlet valve base, a manhole, a temperature meter interface, a water returning valve, and a blowoff valve base are welded to the boiler cylinder and are communicated with one another; the outer part of the boiler cylinder is provided with a boiler to preserve temperature. The resistance type electric heating hot water boiler has the following beneficial effects that: 1. the problems of low heat efficiency of the boiler is solved to save energy; 2, the environment-friendly problem is solved; 3. the labor is saved and the labor intensity of an operator is lightened; 3. the history of 4.2 MW/h of the evaporation capacity of a resistance type electric heating steam boiler is broken through.

The invention relates to an air source heat pump double-water-tank hot water system and a control method. The air source heat pump double-water-tank hot water system comprises a variable-frequency water supply pump, a hot water tank, a warm water tank and a parallel host which are connected in sequence, and further comprises a water return valve and a water replenishing valve which are connected with the warm water tank; the hot water tank, the warm water tank and the parallel host are sequentially connected to form host-water tank circulation; the warm water tank, the hot water tank, the variable-frequency water supply pump and the water return valve are sequentially connected to form water tank-tail end circulation; and the parallel host comprises a plurality of parallel branches which are independently controlled or not independently controlled, and different heat supply modes are achieved by opening a specific number of parallel branches, so that different tail end load requirements are met. Compared with the prior art, the double-water-tank scheme is adopted, so that the mixing loss among return water, replenished water and hot water is reduced; and meanwhile, the water inlet temperature and the water outlet temperature of the heat pump are reduced, the condensation temperature of the heat pump can be well reduced, and the energy efficiency of the heat pump unit is improved while water consumption of a user is guaranteed.

The invention belongs to the technology field of pumps, more particularly relates to a pressure regulating mechanism of a high-pressure pump; the pressure regulating mechanism of the high-pressure pump is provided with a water inlet pipeline and a high-pressure pipeline on a pump shell; an water channel of an opening valve, which is communicated with the bottom of a backwater valve core is arranged on the high-pressure pipeline at the back of a water outlet valve; a top rod on the upper part of the backwater valve core supports the bottom of a backwater valve; the upper part of the backwater valve is communicated with the high-pressure pipeline; the lower part of the backwater valve is pressed on a backwater valve seat; after the backwater valve is opened, the high-pressure pipeline can be communicated with the water inlet pipeline; a lower spring seat, a big pressure regulating spring and a small pressure regulating spring which are sleeved inside and outside, and an upper spring seat, a pressure regulating bolt and a pressure regulating handle are arranged on the upper part of the backwater valve in sequence. The mechanism uses the big pressure regulating spring and the small pressure regulating spring which are sleeved inside and outside, and therefore causes the pump body structure to be compact, greatly enhances the sealing performance of the pump as gaps among each part are provided with sealing rings, improves the convenience of the operation and use of the pump, has quite strong creativity and practicality, and is suitable to be popularized in and applied to the pump-typed products.

A strong anti-fouling automatic pollution discharge breast wall type recirculation device comprises a well pipe, a recirculation water pipe which is assembled in the well pipe, is communicated with a water source heat pump and is controlled by a backwater valve, a double channel non-clogging impeller which is integrated in a pump body arranged at the bottom of a recirculation water layer in the well pipe and consists of a master impeller and an assisted impeller and the automatic control strong sewage pump of a mixer; the outlet end of the pump body is connected with a catch basin arranged outside the well pipe. The technical points are that an interlayer decompression breast wall is arranged at the external circumference of the well pipe, and the coarse gravels are filled between the well pipe and the interlayer decompression breast wall, and the fine filling gravels are filled between the interlayer decompression breast wall and the external well pipe. The invention can fundamentally solve the problems that the sand is moved at the bottom of the pumping well of the single-pipe well or multi-pipe well and the well wall collapses to cause a dead well, etc., and further has the advantages of more reasonably designed structure and more stable and reliable running besides the advantages of the effect of completely desilting and timely recirculation, and further prolongs the service life of the heat collecting well, improves the effects of preventing the fouling and recirculation, and effectively avoids the pumping well of the single-pipe or multi-pipe well from being caused to be a dead well.

The invention discloses a water temperature control method and device. A water inlet valve on a water inlet pipe is turned on; a water pump is operated, and water currents are heated by a heat exchanger to reach a temperature detecting point; the water temperature of the temperature detecting point is a water outlet temperature; the water outlet temperature is compared with a first set temperatureand a second set temperature; when the water outlet temperature is lower than the first set temperature or higher than the second set temperature, the water inlet valve is turned off, a water returnvalve is turned on, and the water currents are continuously circulated among the water pump, the water inlet valve, the heat exchanger and the water return valve until the water outlet temperature ishigher than the first set temperature and lower than the second set temperature; the water return valve is turned off, the water inlet valve is turned on, and the water currents flow out from a wateroutlet pipe; and when the water outlet temperature is higher than the first set temperature and lower than the second set temperature, the water currents are discharged from the water outlet pipe. Thewater outlet temperature can be effectively controlled to prevent the problem of hot and cold feelings.

The invention provides a water outlet automatic pressurization and water return linkage integrated intelligent control device for an air energy water heater, relates to the field of air energy water heaters, and particularly relates to the technical field of a water outlet automatic pressurization and water return linkage integrated intelligent control device for the air energy water heater. The technical problems of unhooking between pressurization and water return of an existing air energy water heater such as insufficient water outlet pressure required by a user using the air energy water heater, long-time non-heated water, unstable water temperature are effectively solved. A method solving the problems is that through an intelligent pressurization and water return linkage controller, according to a detected temperature of water in a water tank, a pressure on a water outlet, a water flow signal on the water outlet, a set water outlet time and the like, a booster pump is started, a water return valve is started according to a detected water temperature on the water outlet, the booster pump and the water return valve are flexibly and effectively started, an RS485 to Ethernet server is connected with a computer, and real-time monitoring is realized.

A backwater valve assembly includes a valve housing, a valve member and a servicing tool. The valve housing has an internal ledge within its interior on which is positioned a retainer clip oriented in vertical alignment with a riser. The valve member has a first engagement of a two part engagement on one face and a mounting along a peripheral edge which includes transverse pins adapted to engage the retainer clip. The servicing tool includes a second engagement of the two part engagement at a working end of a shaft. The hook engages the hook receiver of the valve member during insertion and removal.

The invention relates to a cooling device of a water-cooled energy storage battery cooling device. The device comprises a body (1). A main water return port (1a), a main water supply port (1b), a mainwater return valve (2) and a main water supply valve (3) are arranged on the body (1), a high-temperature water chilling unit (4) and an evaporation air cooling module (5) are arranged in the body (1), and first water return ports (4a) and second water return ports (5a) are connected with the main water return port (1a). The first water supply port (4b) and the second water supply port (5b) are respectively connected with the main water supply port (1b), and a first water return valve (7), a first water supply valve (9), a water return pump (11), a second water return valve (12) and a secondwater supply valve (14) are respectively arranged on pipelines which are connected in pairs. The device has the advantages that the natural cold source is used for cooling the water-cooled battery cooling water, so that the energy consumption of battery cooling is greatly reduced.

The invention provides a frozen-blocking prevention solar natural ventilation system used for room heating and solving the problems of frozen blocking in winter and switch-over of a heat source. The solar natural ventilation system comprises a solar water heater, an auxiliary heating device, a first water pump, a second water pump, a controller, a floor heating cooling water pipe, a three-way valve and a return valve, wherein a water outlet of the solar water heater is connected with a first input end of the three-way valve through the first water pump; a water outlet of the auxiliary heating device is connected with a second input end of the three-way valve through the second water pump, and an output end of the three-way valve is connected with a water inlet end of the floor heating cooling water pipe; a water outlet end of the floor heating cooling water pipe is connected with the water inlet of the solar water heater and a water inlet of the auxiliary heating device through independent pipes; a water outlet of the first water pump is connected with a water inlet of the solar water heater through a water return valve; and the first water pump, the second water pump, the three-way valve and the water return valve are respectively connected with the controller and are controlled by the controller.

A backwater flow detection device for detecting backwater flow between a building and a sewer conduit using air pressure detection in air pockets in the sewer conduit. The backwater flood detection device detects backwater flow events including backflow events from a sewer line as well as wastewater blockage events that can result in wastewater backflow into a building. The water detection sensor allows the homeowner or building manager to be warned when there is an issue with backwater flow in or near the building, and also with the backwater valve.