7692 results about "Booster pump" patented technology

Process gas discharged from a bypass pipe to a gas exhaust system can be prevented from diffusing back to the inside of a process chamber without having to install a dedicated vacuum pump at the downstream side of the bypass pipe. The substrate processing apparatus includes a process chamber accommodating a substrate, a gas supply system supplying process gas from a process gas source to the process chamber for processing the substrate, a gas exhaust system configured to exhaust the process chamber, two or more vacuum pumps installed in series at the gas exhaust system, and a bypass pipe connected between the gas supply system and the gas exhaust system. The most upstream one of the vacuum pumps is a mechanical booster pump, and the bypass pipe is connected between the mechanical booster pump and the rest vacuum pumps located at a downstream side of the mechanical booster pump.

The invention discloses a method for controlling indoor humidity. The method comprises the following steps of: entering a working mode which comprises a humidifying mode and a dehumidifying mode; detecting indoor humidity RH1, comparing RH1 with set humidity RH2, determining the working mode as the dehumidifying mode if RH1 is greater than RH2, determining dehumidifying amount according to RH1 and RH2 if RH1 is smaller than RH2 and the working mode is the humidifying mode; determining power supply voltage U used for controlling a gap d of a dehumidifying film according to the dehumidifying amount; and supplying power to the dehumidifying film for regulating the gap to be d. Besides, the invention further provides a device for controlling indoor humidity. The method and the device can control the gap size of the dehumidifying film, power supply voltage and flow of a booster pump according to the indoor humidity; and integral coordination control is performed on indoor humidity according to a working condition required by a user.

The invention discloses a gas-conducting pressure measuring intermittent producing oil exploitation device. The gas-conducting pressure measuring intermittent producing oil exploitation device makes contact with well liquid during working, the gas-conducting pressure measuring intermittent producing oil exploitation device comprises gas conducting and pressure measuring equipment used for measuring the hydrostatic fluid column pressure, controlling equipment used for receiving data of the gas conducting and pressure measuring equipment so as to control oil pumping equipment to realize intermittent oil production, and the oil pumping equipment making direct contact with the well liquid, wherein the gas conducting and pressure measuring equipment comprises tubular billet pressure measuring equipment and sleeving pressure measuring equipment, the tubular billet pressure measuring device comprises a nitrogen cylinder, a nitrogen booster pump, a capillary steel pipe used for conducting nitrogen, a pressure transmitting cylinder used for bearing the nitrogen and tubular billet pressure sensors connected to an outlet of the nitrogen booster pump and an inlet of the capillary steel pipe which are sequentially connected, and the sleeving pressure measuring device comprises a sleeving pressure sensor connected with the oil pumping equipment. Controller equipment receives data of a data collector to control the working frequency of oil extraction equipment or start and stop of the oil extraction equipment, so that the intermittent production is realized to achieve the effect of reducing the production cost.

Water treatment systems and methods. Embodiments provide water treatment systems which comprise first oxidation, particulate filtration, and membrane filtration subsystems in that order. Systems also comprise recirculation paths and sensors for these subsystems. A controller determines whether to recirculate water to a previous subsystem in the order. Systems can comprise downstream second oxidation, high pressure membrane, ion exchange, activated carbon subsystems and / or ultraviolet contactors. Systems with high pressure membranes can comprise a pump before the high pressure membranes, a booster pump of the high pressure membrane subsystem, and a damping tank. In such systems the controller maintains a pressure in the damping tank. High pressure membrane subsystems can further comprise nanofiltration membranes and RO membranes. Systems can comprise bypass paths for some / all of the subsystems. For such systems, the controller further determines, whether to bypass these subsystems.

The invention discloses a thermal / power combined drive steam jet type refrigeration device. A condensation pipeline outlet of a condenser is connected with a refrigerant inlet of a booster pump and a refrigerant inlet of an expansion valve. A refrigerant outlet of the booster pump is connected with a refrigerant inlet of a generator. A refrigerant outlet of the generator is connected with a refrigerant inlet of a first depressurization nozzle. A refrigerant outlet of the expansion valve is connected with an evaporation pipeline of an evaporator and is then connected with a refrigerant inlet of a compressor. A refrigerant outlet of the compressor is connected with a refrigerant inlet of a second depressurization nozzle. A refrigerant outlet of the first depressurization nozzle is connected with a refrigerant outlet of the second depressurization nozzle and is then connected with a refrigerant inlet of a diffuser pipe. A refrigerant outlet of the diffuser pipe is connected with a condensation pipeline inlet of the condenser. The invention further provides a thermal / power combined drive steam jet type refrigeration method using the thermal / power combined drive steam jet type refrigeration device at the same time.

A pressure exchange device is provided that utilizes an integral high pressure boost pump that is in fluid communication with a pressure exchange unit. An optional low pressure boost pump unit may also be provided. The pressure exchange unit comprises a rotating rotor assembly inside a housing to transfer the pressure of a fluid from one high pressure fluid to another low pressure fluid.

The invention discloses a 3D printing device and a 3D printing method by utilizing supercritical carbon dioxide as a solvent. The device mainly comprises a stock unit, an ejection unit, a three-dimensional molding platform unit and a raw material recycling unit, wherein the ejection unit comprises a gas pump, a needle valve, a cooling fan and a resistive heater; the stock unit comprises high polymer material powder, a powder pump, a carbon dioxide gas cylinder, a mixing tank, a liquefied booster pump, a heater, a liquid pump and a gas pump; the three-dimensional molding platform unit comprises an aluminum alloy molding platform and a three-dimensional ball screw sliding table module; and the raw material recycling unit comprises a closed box and a recovered gas pump. According to the method disclosed by the invention, the carbon dioxide gas is turned to be in a supercritical carbon dioxide state, and after the carbon dioxide gas is completely dissolved to produce supercritical carbon dioxide solution containing a high polymer material, the solution is conveyed into the ejection unit by virtue of the liquid pump. The supercritical carbon dioxide serves as a consumable carrier, so that more kinds of high polymer materials are applied to the field of 3D printing, and the overall performances of 3D printing supplies are improved.

The invention discloses a device for monitoring a coal bed gas parameter in real time. The device is composed of a hole packer, a gas parameter sensor, a data collection instrument and a booster pump, wherein the hole packer is composed of a supporting steel pipe, a hole sealing capsule, a front cover, a pressurized pipe, a gas pipe and a propelling movement rod; the gas parameter sensor mainly comprises a gas pressure sensor, a flow sensor and a gas temperature sensor; the data collection instrument mainly comprises an A / D conversion circuit and a CPU (central processing unit) processor; and the CPU processor is respectively connected with a program memory, a display, an operation keyboard, an RS232 communication circuit, a data memory and a standard signal output interface. A pressurized pump pressurizes the hole sealing capsule to cause the hole sealing capsule to expand and seal holes. The gas parameter sensor senses each parameter of the gas, the data collection instrument collects corresponding data, and the gas parameter of the coal bed can be quickly and accurately monitored in real time. The device has a method and is easy to operate in field, the basic parameters of the coal bed gas can be accurately measured, and the dynamic variation of the coal bed gas parameters can be monitored in real time.

The invention discloses an energy-conserving textile fabric washing device. The washing device comprises a case. A cleaning room, a drying room and a disinfection room are formed in an inner cavity of the case in sequence from left to right. A fixed support on the left side face of the case is fixedly connected with a feeding roller through a fixed shaft. A fixed support on the right side face of the case is fixedly connected with a discharge roller through a fixed shaft. A feeding opening is formed in the upper portion of the left side face of the case. A discharge opening is formed in the upper portion of the right side face of the case. The upper surface of the case is fixedly connected with a water storage tank, and the bottom of the left side face of the water storage tank is fixedly connected with a water pipe fixedly connected with a booster pump. The energy-conserving textile fabric washing device has the advantages of thoroughly cleaning and disinfecting cloth, effectively recycling cleaning fluid to avoid water body pollution and effectively utilizing heat in the drying room. The problems are solved that existing textile fabric wastes energy and cannot be cleaned thoroughly.

The invention discloses a device and a method for detecting the leak rate of an O type rubber sealing ring used for spaceflight, which belong to the technical field of the detection of spaceflight components. The device comprises gas storage equipment, an inflation valve, a first pre-pumping valve, a second pre-pumping valve, a leak detection tooling, a leak marking valve, a standard leak, a vacuum gauge, a deflation valve, a leak detection valve, a leak detector, a forestage angle valve, a prepump, a molecular pump, an ultrahigh vacuum gate valve and a vacuum booster pump. The method comprises the following steps of: firstly, pumping the pressure of a detection chamber and a dummy module below the air pressure of 10Pa, then pumping the detection chamber to a lower pressure by the molecular pump, forming a pressure difference between the detection chamber of the leak detection tooling and the dummy module and afterwards introducing high-purity gas with a standard atmosphere pressure into the dummy module. If a leak exists in a rubber sealing ring to be detected, the high-purity gas can enter the detection chamber by the sealing ring under the action of the pressure difference, and the leak rate of the sealing ring can be accurately calculated by the magnitude of the change of the output indication of the leak detector. The invention has the advantages of high detection sensitivity, high detection efficiency, reliable result and the like.

A submersible well pump assembly in a wellbore; the pump assembly includes a liquid lift pump and a booster pump for pumping a two-phase mixture of gas and liquid. A shroud with an opening at its upper end partially encloses the pump assembly. An annulus is formed between the shroud and the wellbore inner circumference. Two phase fluid from the booster pump exits the shroud through a port and flows up the annulus to the shroud opening. Liquid in the two-phase flow separates from the gas and flows into the shroud opening and onto the liquid lift pump. The gas continues to flow up the wellbore, past the shroud opening, to the wellbore entrance.

A gas turbine generating system and its process of separating CO2 with LNG is to compress ING by booster pump to be heated and gasified in LNG gasifier to charge to cold natural gas by expansion turbine, a part enters into the gas turbine combustion chamber as fuel and the rest most part is transported to outside users. Cold N mixed with air enters into a compressor, to be heated in a reheater then enters into a combustion chamber to generate burning reaction with natural gas to generate high temp gas to enter into the turbine expansion. Turbine exhaust is cooled in the reheater, and cooled by hot net heater and cooled further in LNG gasifier and remained N is expelled about environment temp, condensed water is recovered to solid CO2.

The invention discloses an energy-saving system in a communication room, which improves the refrigeration efficiency of the air conditioner, has good energy-saving effect, saves the running cost and prolongs the service life of the air conditioner. The energy-saving system comprises a precise air conditioner (30), a control device (70), a relay (71), a water box (3) and a supercharging pump (4); the precise air conditioner (30) comprises an outdoor condenser (1), an indoor evaporator (2) and a heat dissipation fan (10); the water box (3) is connected with a water inlet pipe (5) which is provided with a water inlet valve (51); the water inlet of the supercharging pump (4) is communicated with the water box (3); the water outlet of the supercharging pump (4) is divided into two passages: one passage is connected with a plurality of atomizing spray heads (7) and the pipeline is provided with a spraying electromagnetic valve (61); the other passage is connected with a plurality of cleaning spray-head (8) and the pipeline is provided with the cleaning electromagnetic valve (62); and the positions of the spraying electromagnetic valve (61) and the cleaning electromagnetic valve (62) correspond to the fin of the outdoor condenser (1). The energy-saving system can be widely applied to the energy-saving field of the communication system.

The invention discloses a method and device for testing the gas content of a shale gas reservoir. The device for testing the gas content of the shale gas reservoir comprises a high-pressure nitrogen inlet device, a high-pressure natural gas inlet device, a first six-way valve, a booster pump, a second six-way valve, an evacuator, a thermostat, a rock core desorption flow model, a pressure sensor, a ring crush control pump and a gas metering device, wherein the high-pressure nitrogen inlet device and the high-pressure natural gas inlet device are connected with the second six-way valve by virtue of pipelines after passing through the first six-way valve and the booster pump; the evacuator is connected with the second six-way valve; the second six-way valve is connected with the gas metering device by virtue of a pipeline after pasting through the rock core desorption flow model arranged in the thermostat; and the rock core desorption flow model is respectively connected with the pressure sensor and the ring crush control pump which is used for performing follow-up control on the ambient pressure of the rock core desorption flow model. By adopting the device disclosed by the invention, the shale gas desorption in the development process of a gas reservoir is researched by virtue of a physical simulation method, and the gas production rate during shale gas exploitation is measured.

The invention discloses a test method and a test device for simulating stratum deformation caused by pipe jacking construction. The test method comprises the following steps: (1) installing a lateral flexible loading bag; (2) filling with earth; (3) installing a simulated jacking pipe; (4) installing a loading system; (5) loading; (6) monitoring an initial value; (7) simulating an excavated stratum loss process; and (8) organizing and analyzing test data. The lateral flexible loading bag is adhered to the inner wall of a model box, the left end of the model box is connected with the lateral flexible loading bag, the right end of the model box is connected with a lateral loading pressure gauge, and the lateral loading pressure gauge is connected with a lateral loading booster pump through a lateral pressurizing water injection pipe; an exhaust valve is arranged at the top of the lateral flexible loading bag; a circular hole is formed from the front side wall of the model box to the bottom of the model box; studs are welded at the periphery of a circular jacking pipe preformed hole; the right end of the simulated jacking pipe is placed in the circular jacking pipe preformed hole in the front side wall of the model box, and the left end of the simulated jacking pipe is placed close to the rear wall of the model box. The test device disclosed by the invention is reasonable in structure and convenient to operate and is used for simulating a model test of stratum deformation caused by pipe jacking tunnel construction.

The invention discloses a steel plate drilling machine with scrap recycling and fixing functions. According to the steel plate drilling machine, a first hydraulic cylinder drives a first hydraulic rod to drive a pressure plate to move downwards, so that a steel plate is extruded and fixed, the influence of movement of the steel plate in drilling on drilling effects and drilling accuracy is avoided, stability of a second hydraulic rod in the downward movement process is improved by the aid of a sliding sleeve, so that the drilling accuracy is further improved, water in a water storage tank enters a water outlet pipe by the aid of a first booster pump and is sprayed from a flushing sprayer, so that scraps generated by drilling the steel plate are flushed, cleanness of the surface of the steel plate is ensured, waste water generated by flushing the scraps falls into a water receiving funnel through a through hole, the waste water is collected by the water receiving funnel, environmental pollution caused by the waste water is avoided, the waste water entering a scrap recycling and drying box is filtered by the aid of a screen plate, the scraps are recycled, resources are saved, and practicability of the steel plate drilling machine is improved.

The invention discloses a construction method for an interior partition wall. The construction of the partition wall is characterized by comprising the following steps: erecting templates at both sides of a wall body, and fixing the templates by using outside removable keels; and then casting light aggregate concrete or manufactured-in-place aerated concrete in the templates so as to cast the wall body into an complete whole, wherein the permanent templates can be made of thistle boards, plastic boards, cement boards or insulation boards; the casting of the light aggregate concrete is transferred by a booster pump; and the casting of the concrete can be started from the lower part, middle part or the upper part of the wall body until the concrete is spread all over the whole wall body. The wall body constructed by using the method meets the requirements of light weight, sound insulation and heat insulation for the traditional partition wall, and simultaneously, the common quality problems of plastering, wall surface cracking and poor earthquake resistance in the construction of the traditional partition wall are avoided or reduced because of the one-piece casting. Meanwhile, by erecting the permanent templates in the construction of the wall body, the molded wall surface is smooth and level, and the floated coat construction is omitted, thereby greatly raising the construction speed of the wall body, and lowering the construction cost.

The invention provides a novel adsorption and desorption experiment device and a novel adsorption and desorption experiment method. The device mainly consists of a reference cylinder, a sample cylinder, a confining pressure pump, a booster pump, an air compressor, an intermediate container, a constant temperature system, a pressure sensor and a computer, wherein the sample cylinder mainly consists of a sample chamber, a confining pressure chamber, a left adjustable plug, a right adjustable plug, a barrel, a sealing ring, a screen mesh and a leather sheath; the confining pressure chamber is defined by the barrel and the leather sheath; the sample chamber is defined by the leather sheath and the adjustable plugs; the sample chamber is connected with the reference cylinder; the reference cylinder, the sample cylinder and the pressure sensor are arranged in the constant temperature system; the confining pressure chamber is connected with the confining pressure pump, and the confining pressure pump is used for increasing the confining pressure of the confining pressure chamber, so that the real stratum conditions can be simulated; the sample cylinder is provided with the two adjustable plugs, one adjustable plug is provided with the screen mesh on the top, and the other adjustable plug is not provided with the screen mesh, so that two rock samples including standard rock samples (having length of 5cm and diameter of 2.5cm) or rock sample powder (with 60-80 meshes) can be arranged in the sample cylinder. The device and the method have the advantages that the principle is reliable, and the device is simple in structure and simple and safe to operate; the real stratum environment can be simulated, and temperature and pressure conditions of different reservoir stratums as well as the methane adsorption and desorption law of the rock samples can be determined, so that reasonable experimental data can be provided for shale gas occurrence form research and reserve calculation.

An above-motor mixed flow booster pump combined with a fluid crossover that directs up into the inside of an inverted shroud to allow enhanced gas separation. A gas and liquid separator is used to enhance separation. The system is simple and provides increased gas handling capability for high flow or low flow gas well dewatering applications, including vertical wells, horizontal wells, slant wells. The boost pump allows the moving of a mixed flow upwards to the top of an inverted shroud in wells lacking the required pressure.

The invention discloses a method and a device for treating high-salt refractory organic wastewater, and particularly relates to a method and a device for treating high-concentration refractory COD and high-salt industrial wastewater by coupling the catalytic wet oxidation and MVR evaporation and concentration crystallization technology. The device comprises a vapor-liquid heat exchanger, a liquid-liquid exchanger, a booster pump (or a circulating pump), a compression fan, an oxidant dosing device, a wet catalytic oxidation reactor (WAO), an evaporator, a vapor compressor and a vapor-water separator. Raw water is subjected to air catalytic wet oxidation in the WAO reactor after two-stage preheating through the vapor-liquid heat exchanger and the liquid-liquid exchanger; the oxidized wastewater is evaporated and concentrated by an evaporator to obtain crystalline salt and the distilled water. The method and the device provided by the invention combine advantages of a wet oxidation technology and an MVR technology, effectively degrade organic matters, improve biodegradability of wastewater, and realize effective utilization of heat energy generated by WAO oxidation reaction and secondary vapor of the evaporator.

The invention discloses cloth processing equipment for weaving. The cloth processing equipment comprises a dustproof box, a material inlet roller, a material outlet roller, a float hair attracting device, a float hair brushing device, a humidifying device and a wrinkle eliminating device. The float hair attracting device comprises a dust collector, an air pipe and an attracting head. The float hair brushing device comprises a first electric push rod, a mounting board and a hairbrush roller. The humidifying device comprises a water tank, a hard water pipe, a booster pump and a nozzle. The wrinkle eliminating device comprises a second electric push rod, a mounting box, a heater and a winkle eliminating board. The cloth processing equipment is provided with the float hair attracting device and the float hair brushing device, thereby eliminating the float hair on the surface of the cloth and preventing entering of the float hair into body of personnel through breathing in postprocessing oftextile. The cloth processing device is provided with the humidifying device and the wrinkle eliminating device for performing ironing and wrinkle elimination on the humidified cloth. The cloth is pulled out of the bottom of the wrinkle eliminating board through the pulling force of the material outlet roller and is stretched. The wrinkle-eliminated cloth is cooled and molded in air, thereby ensuring in-time cloth fixing after wrinkle elimination and improving cloth quality.

The invention discloses a combined power generating system based on waste-heat utilization of a combustion motor. The combined power generating system based on waste-heat utilization of the combustion motor is composed through combination of Bretton cycle and organic Rankine cycle. The combined power generating system based on waste-heat utilization of the combustion motor mainly comprises a gas turbine, a heat exchanger, a gas compressor, a turbine, a condenser, a booster pump and a circulating pump. Waste gas of the combustion motor firstly passes through a heater and transfers heat to carbon dioxide of Bretton cycle, carbon dioxide steam at the high temperature and the high pressure is formed to drive the gas turbine to generate power. The waste gas of the combustion motor still has high heat after passing through the heater, then the heat is transferred to an organic working medium in Rankine cycle through an evaporator, and organic working medium steam at the high temperature and the high pressure is formed. Carbon dioxide discharged from the gas turbine passes through a cooler, and heat of the carbon dioxide is transferred to the organic working medium in the Rankine cycle too, and organic working medium steam at the high temperature and the high pressure is formed. The turbine with the organic working medium is driven to generate power by two blasts of organic working medium steam at the high temperature and the high pressure.

The invention discloses a total-flooding jet polishing device and method. The device comprises a nozzle, a polishing solution container, a workpiece to be polished, a workpiece clamp, a polishing solution recovery tank, a numerical control polishing machine tool, a numerical control computer, a pressure gage, a pressure regulating valve, a booster pump, a polishing solution stirrer, a polishing solution receptacle and a plurality of liquid pipelines, wherein the workpiece clamp is fixed on the bottom end of the polishing solution container; the workpiece to be polished is arranged in and fixedly connected with the workpiece clamp; one end of the nozzle is fixed in the polishing moving head of the numerical control polishing machine tool; and the coordinate position and the dwell time of the nozzle are controlled by the numerical control computer to remove the material of the workpiece at fixed quantity. The method comprises the following steps: clamping the workpiece to be polished inthe polishing solution container; injecting the polishing solution into the polishing solution container until the workpiece to be polished and the outlet of the nozzle are completely flooded in the polishing solution; starting a hydraulic part to start flooding jet polishing; regulating distance between the nozzle and the workpiece to be polished by the numerical control computer; and controlling polishing dwell time to remove materials at fixed quantity.

The invention discloses a multipurpose intelligent telescopic sprinkling irrigation vehicle and belongs to the technical field of sprinkling irrigation. The vehicle body is controlled or manipulated by a vehicle-mounted automatic control system according to GPS signals. Irrigation water supply enters a booster pump and is conveyed to a telescopic pipeline through a two-direction valve passing a buffer tank or an external water inlet. The telescopic and rotation are controlled by a motor on top of a support pole, the water pressure and a steering engine. The automatic control is finished by a chip based on a singlechip and a signal transfer module. A power supply circuit system includes: a generator, an electric brush and related circuits. In the invention, each electronic element is controlled for teamwork by the automatic control system based on the singlechip, thus transversely and vertically stretching out and drawing back, and 360-degree rotation of a sprinkling pipeline can be achieved, irrigation demands of crops in different terrains and at different heights can be met, irrigation tasks in various complicated environment conditions can be completed effectively, and effective use ratio of the irrigation water can be improved.

The invention relates to an automatic hydrostatic test control system using an air-bottle outer measuring method, comprising a hydrostatic test system, a control platform and a matched auxiliary system. The hydrostatic test system is used for the hydrostatic test of a tested air bottle and comprises a booster pump, a water jacket, a measuring cup, an electronic scale and a recycle pump, the auxiliary system comprises an automatic feeding device, a lifting sealing device and an automatic discharging device, wherein the automatic feeding device feeds the tested air bottle into a test position, the lifting sealing device loads tested air bottle in the water jacket or pulls the tested air bottle out of the water jacket, and the automatic discharging device conveys the tested air bottle out of the test position. The invention realizes the automatic operation of a hydrostatic test process, realizes the real-time and automatic detection and control of the test process, further lightens the labor intensity of operators, improves the detection efficiency and the detection accuracy and can realize the automatic operation of all auxiliary processes of the hydrostatic test by using the air-bottle outer measuring method.

The invention discloses a hydrogen container hydrogen environment fatigue test system. One end of a high pressure hydrogen container is respectively communicated with a test container and a low pressure hydrogen container through an explosion protection pressure reducing valve, a flow regulating control valve, a first normal open stop valve and a test container depressurizing valve; the low pressure hydrogen container is communicated with the other end of the high pressure hydrogen container through a booster pump; a pressure sensor and a cycle recording device are arranged between the first normal open stop valve and an atmospheric valve; the normal open stop valve, a pressure display and a standard pressure gauge are arranged between the test container and the normal open stop valve; one path of an automatic control system operation console is respectively electrically connected with the booster pump and the pressure gauge through an excessive pressure controller; the other path of the automatic control system operation console is electrically connected with the atmospheric valve and the test container depressurizing valve. The high pressure hydrogen in the high pressure container is charged into the test container through the explosion protection pressure reducing valve and the flow regulating control valve, the explosion protection pressure reducing valve is closed when a set pressure is reached, the test container depressurizing valve is opened after maintaining the pressure for a while, and the hydrogen is depressurized into the low pressure container to complete a fatigue test cycle.

The invention discloses an energy-saving reverse-osmosis desalination technique for seawater / salt water. Wherein, using lifting water pump to force some seawater / salt water into water cylinder by transfer valve to push piston and extrude strong brine on another side and discharge from another valve, and other seawater / salt water into reverse-osmosis membrane from high-pressure pump to discharge strong brine into another water cylinder and push piton to extrude seawater / salt water on another side into reverse-osmosis membrane from transfer valve and booster pump; adjusting and switching the operation of valves to realize desalination process. The said equipment also comprises energy-recovery device with transfer valves on two ends that composes of valve body, lining and valve core with two flow paths; there are four connection ports distributed evenly on the valve body and core. This method is flexible and reliable.

The invention belongs to the technical field of water treatment, relates to a water flow buffer and pure water back-wash technology, and particularly relates to an air bag used for water treatment and a water purification device with the air bag. According to the air bag used for water treatment, and the water purification device with the air bag, the air bag is formed by a high-resistance plastic film and is used for caching water flow and buffering pressure in a water treatment device. With the adoption of the water purification device with the air bag, the air bag is arranged in a filter shell space which is communicated with a filter core pure water port; pure water is cached by the compression of the air bag and discharged by expansion of the air bag, so that the purpose of the invention of back-flowing pure water and back-washing the filter core is achieved. With the adoption of the water purification device with the air bag, the air bag is arranged in the filter shell space which is communicated with a pressure switch in a reverse osmosis water purification device, the problems of frequency opening of the water inlet valve and the frequency starting of a booster pump are solved by caching the pure water and the pressure by the air bag. According to the water purification device with the air bag, the air bag is arranged in a water inlet pipeline of the filter core, so that the purpose of the invention of clearing up water hammer and buffering water inlet pressure is achieved.