94 results about "Water efficiency" patented technology

A method to identify a water flow anomaly in a system having first and second water using devices to generate baseline data that preferably has water use signatures and corresponding water pressure information regarding the water using devices; comparing the baseline data with actual water usage signatures and corresponding actual water pressure information to identify a flow anomaly with the water using devices; and providing information on the flow anomaly to an individual. It is especially contemplated that baseline data are generated for multiple devices coupled to a common water supply system, with baseline data from two or more water using devices compared against future water use patterns of the same devices. Apparatus to accomplish these tasks is preferably housed in an irrigation controller, which may be advantageously coupled to a flow meter.

The invention discloses a seawater desalination method implemented by solar membrane distillation, which belongs to a water desalination technology. A membrane distillation assembly, a pretreatment unit, a solar heat-collected circulating water inlet unit, an internal phase change heat recovery unit and an external condensing heat recovery unit are included, wherein a hollow fiber membrane and a hollow fiber condenser pipe are filled in the membrane distillation assembly in a staggered weaved mode, and the pretreatment unit, the solar heat-collected circulating water inlet unit, the internal phase change heat recovery unit and the external condensing heat recovery unit are assorted. A material liquid to be treated, alternately as a hot material liquid and a cold material liquid, is fed into a hot cavity of the hollow fiber membrane of the membrane distillation assembly and a cold cavity of the hollow fiber condenser pipe, so that the membrane distillation assembly can be flexibly amplified for multi-group and multi-level arrangement, therefore, the membrane distillation assembly both can be implemented in a small-scale arrangement mode, and also facilitates wide-range integrated seawater desalination applications; and the design of the novel membrane distillation assembly ensures the high-yield water efficiency, and the multi-level arrangement mode and external condensing heat recovery process of the membrane distillation assembly improve the utilization rate of heat energy. A cheap solar heat collecting device is taken as a driving heat source, and a liquor condensate cooling device is not required to be separately introduced, so that the investment, operation cost and energy consumption of the device are greatly reduced.

The invention discloses a sprinkling device for newly built roads, which comprises a box body, a fixed base is fixedly connected to the left side of the bottom of the inner wall of the box, a motor is fixedly connected to the top of the fixed base, a worm is fixedly connected to one side of the output shaft of the motor, and the fixed base The side away from the motor is fixedly connected with a shaft seat, the center line of the shaft seat is connected with a transmission shaft in rotation, the middle part of the transmission shaft is fixedly connected with a worm wheel between the two shaft seats, the worm and the worm wheel are meshed and connected, and the transmission shaft is rotatably connected with a transmission shaft. The device and the transmission device are rotatably connected with a rotating device, a water tank is fixed in the box, and the water tank is connected with a high-pressure pipe through a high-pressure pump, and the high-pressure pipe extends to the outside of the box body and is fixedly connected with a high-pressure nozzle. The invention relates to the field of rural road construction. The sprinkling device for newly-built roads uses a motor to drive a drive wheel to rotate and a high-pressure sprinkler to reciprocate, which solves the problem of traditional manual sprinkling, improves sprinkling efficiency, and reduces labor intensity.

A spiral plate pressure water storage tank is characterized in that an inner container of a pressure water tank is set as a cylinder body, a deflector is spirally arranged by surrounding a shaft line of the cylinder body, a cold water port is formed on the side wall of the bottom part of the inner container of pressure water tank and positioned in a bottom layer of the deflector, a hot water port is formed on the side wall of the top part of the inner container of the pressure water tank and positioned in a top layer of the deflector, and a spiral water flow channel is formed along the deflector between the cold water port and the hot water port. The spiral plate pressure water storage tank can not only retain the advantages on the water supply pressure aspect of the pressure water tank, but also effectively improve the hot water efficiency, simultaneously simplify the structure, reduce the cost and miniaturize the water tank.

The invention belongs to the technical field of polyether polyol synthesis and particularly relates to a preparation method of polyether polyol used for water-soluble polyurethane grouting materials. A front-segment polymerization reaction includes the steps that firstly, neosorb, an alkali metal catalyst and solvent are added into a reaction kettle, and a midbody polyether polyol is obtained; a rear-segment polymerization reaction includes the steps that the midbody polyether polyol is taken and placed into a reaction kettle, epoxide is dropwise added to the midbody polyether polyol continuously, and the polyether polyol is obtained. The degree of functionality of the obtained polyether is 6, and the molecular weight is 15000-22000. After the polyether which is high in degree of functionality, super high in molecular weight and low in degree of unsaturation is made into the water-soluble polyurethane grouting materials, higher water efficiency and strength are achieved. In an overall polymerization reaction, the ethylene oxide accounts for 50-90% of total epoxide, the activity of the polyether can be improved, and a higher solid water speed is achieved in the obtained water-soluble polyurethane grouting materials.

The invention discloses a watering auxiliary device which comprises a bearing plate. An irrigation mechanism is arranged on the upper surface of the bearing plate, a plurality of placement tables are arranged on the upper surface of the bearing plate and positioned between a group of sliding rails, an operation table is arranged on the upper surface of the bearing plate and positioned in front of the placement tables, a commercial power interface is formed in the side surface of the operation table, a controller is arranged on the upper surface of the operation table, a power connection terminal of the controller is connected with the commercial power interface through a lead, and an output end of the controller is respectively connected with an electric car, a first rotating motor, a hydraulic cylinder and an electric push rod through leads. The watering auxiliary device has the advantages that each bonsai can be uniformly watered by semi-automatic spraying treatment and infrared positioning, manpower is liberated, watering efficiency is improved, economic loss is decreased, and the watering auxiliary device is convenient to use.

The invention discloses an ecological type manual fast-permeability sewage processing system, which is used for purifying and processing sewage. Suspended solid in the sewage can be firstly intercepted by a grid tank (1), and the sewage can then flow into a micro aeration tank (3) through a drainage pipeline which is arranged at the lower part of a regulating tank (2) after the water quality and the water quantity are subjected to equalizing regulation by the regulating tank (2); and the sewage can flow into an ecological fast-permeability tank (4) to be subjected to purification processing after being subjected to aeration processing by the micro aeration tank (3), is collected by a water collecting pipeline (7) which is arranged at the bottom, and can be discharged after flowing into a post-positioned denitrification tank (5) and being subjected to denitrification processing. The ecological type manual fast-permeability sewage processing system disclosed by the embodiment of the invention has the advantages of being less in field limit, less in occupied area, high in hydraulic loading, good in water outlet efficiency and easy in operation and management; and due to the implementation of the ecological type manual fast-permeability sewage processing system, the removing ability for TN (Total Nitrogen) and TP (Total Phosphorus) is increased, each water outlet water quality index is stably up to the level A emission standard, the investment cost and the running cost can be reduced, and the ecological landscape effect can be increased.

The invention discloses a shared hot water Internet of Things mode and an operation method and aims at solving the defects of large energy consumption, low hot water efficiency, long wasted time or the defect of being largely influenced by weather of a water heater used by families. For the shared hot water Internet of Things mode and the operation method, by adopting a cooking stove side heat heating mode, the energy is hardly consumed, heat which is wasted at the periphery of a gas range during cooking at ordinary times is collected, flame is isolated from air with water, the water is used for bringing away the peripheral heat of the flame and storing the peripheral heat of the flame concentratedly without influencing the heat efficiency of cooking, and hot water can be additionally heated for daily life use while cooking is finished; by adopting networking shared type supply, the energy is more effectively saved, the equipment investment is saved, use of a user is more convenient; by utilizing the technology of Internet of Things, an Internet ecological circle with a district as a center is established; and by utilizing waste heat, the heat wasted during cooking at ordinary times is collected to heat daily used water, so that a great quantity of energy is saved, and networked intelligent regulation sharing is performed.

The invention discloses a method for synthesizing an Ag@Ag2S / TiO2 nano-rod array, comprising the following specific steps: (1) preparing a TiO2 nano-rod array on FTO conductive glass; (2) soaking the TiO2 nano-rod array into a precursor solution of AgNO3, and preparing an Ag-modified TiO2 nano-rod array through ultraviolet irradiation; and (3) soaking the Ag-modified TiO2 nano-rod array into a multi-sulfur solution with dissolved Na2S and S, and reacting to prepare an Ag@Ag2S / TiO2 nano-rod array. According to the method disclosed by the invention, the absorption of materials to visible light can be improved by using the synergistic effect of Ag and Ag2S, the transmission and separation efficiency of photogenerated charges can be increased, and photo-anode materials with relatively high photodecomposition water efficiency can be obtained; and in addition, the synthesis method is simple in process, the implementation process of electrodes is simplified, and large-scale production is facilitated.

The invention provides an intelligent water spray and dust removal method for an urban road. The method includes the steps: a mounting sprinkler heads on street lamp posts; b calculating the effective action area and optimal water outlet speed of a sprinkler head group on each street lamp post; c setting a start threshold, detecting air quality of an ambient environment and automatically controlling the sprinkler heads to work according to detection results of the air quality of the environment. According to the intelligent water spray and dust removal method for the urban road, the sprinkler heads are mounted on the street lamp posts and controlled to rotatably spray water in a specific mode, dust can be removed, air can be purified, a green belt is irrigated, emergency fire rescue is achieved, high temperature can be reduced in summer, water spray efficiency can be effectively improved, and water resources are saved.

A baffle type pressure water storage tank is characterized in that a cold water port is formed in an inner container of a water tank and positioned at the bottom part of the inner container of the water tank, and a hot water port is positioned at the top part of the inner container of the water tank; baffles are respectively arranged on the left and the right side walls of the inner container of the water tank, the upper and the lower adjacent baffles are respectively positioned on the left and the right positions in the inner container of the water tank, a water flow channel is formed between the two adjacent baffles, and a circuitous flow channel is formed between the outer edges of the baffles and the side walls of the inner container of the water tank. The baffle type pressure water storage tank can not only retain the advantages on the water supply pressure aspect of the pressure water tank, but also effectively improve the hot water efficiency, simultaneously simplify the structure, reduce the cost and miniaturize the water tank.

The invention discloses a three-red-line control index division method based on water circulation simulation. The method comprises the following steps of constructing a distributed binary water circulation model, acquiring data required for constructing the distributed binary water circulation model, setting the social and economic scale and the water consumption intensity of a target year, judging the standard reaching condition of a water functional area, and determining three red line control indexes when the water quality of the water functional area reaches the standard. The method is based on a binary water circulation theory, according to the method, a distributed binary water circulation model is constructed, the organic interaction relationship among the water volume, the water efficiency and the water quality is considered, the water volume and the water quality of a research area are regulated and controlled according to a water quality standard reaching rate simulation result of a water functional area, the total water consumption of an administrative area and the pollutant discharge into a river are calculated, and finally, three red line control indexes of the research area are delimited. Compared with the prior art, the method is advantaged in that the internal mechanism and relationship among the total water consumption, the water consumption efficiency and thepollution load index are fully considered, so control indexes of the three red lines are more reasonably defined.

A water level control for a washing machine provides an integrated unit that may replace standard mechanical water level controls with a microprocessor-based circuit that may provide for more sophisticated water management in a standard washing machine using a non-microprocessor cycle timer.

The invention discloses an efficient paint fog coagulant, a preparation method thereof and an application. The paint fog coagulant comprises a tack-free agent, a slow-release floating agent and a pH (potential of hydrogen) value regulating agent. The tack-free agent comprises a component a, a component b and a component c, wherein the component a is water-soluble cationic polymer, the component b is amphoteric metal salt and / or amphoteric metal salt polymer, and the component c is a surface active agent. The slow-release floating agent comprises anionic polymer, citric acid, sodium bicarbonate, sodium carbonate, mannitol and polyethylene glycol. The paint fog coagulant is applied to wet paint fog system circulating water and simple in use method, and over-spraying paint in the water can be efficiently and rapidly debonded, condensed and floated, so that the circulating water is conveniently reused. By the aid of the paint fog coagulant, painting operation environments can be effectively improved, water quality can be improved, circulating water efficiency is increased, the replacement frequency of the circulating water is reduced, and enterprise cost is saved.

The invention belongs to the field of irrigation devices, particularly discloses an agricultural watering mechanical device for irrigation, and aims to solve the problems that a position of an existing agricultural watering mechanical device is fixed, the watering range of the device is small, and use flexibility is poor. The technical scheme includes that the device comprises a mounting base, supporting plates are fixedly mounted on two sides of the mounting base, two rotating shafts are rotatably mounted on the two supporting plates, rollers are fixedly mounted at two ends of the rotating shafts, a water tank is fixedly mounted at the top of the mounting base, a water filling port is formed in the top of the water tank, a rotating hole is formed in the mounting base, a vertical rod is rotatably mounted in the rotating hole, the bottom end of the vertical rod extends below the mounting base, and a worm is fixedly mounted at the bottom end of the vertical rod. According to the device,the spraying range of a sprayer is widened, watering efficiency can be improved, an angle of the sprayer can be adjusted, and the heights of two handles can be adjusted, so that the device adapts to use of different heights of people and is simple in structure and convenient to use.

A driving mechanism of a flush apparatus includes a motorized unit supported by a valve body, a plunger arm driven by the motorized unit for operating the valve body between a sealed position to an unsealed position, and a timer module operatively linked to the motorized unit to set a flush interval for enabling the flushing operation to be completed once every flush interval. The driving mechanism converts the flush apparatus into water efficient fixture by controlling the amount of daily flushes for ultimate water efficiency.

The invention provides a method for predicting domestic water consumption of urban residents and an application thereof. The method comprises the following steps: counting the water consumption of household domestic water consumption terminal appliances of residents, and counting the number of families, age distribution and water consumption habits; carrying out non-parameter inspection on the family number, the age distribution, the water consumption habit and the water efficiency level, and solving the correlation between the influence factor and the water consumption of the terminal appliance; and according to the influence factors on the water consumption of the terminal appliance obtained through inspection, adopting a neural network model to construct a terminal-family-urban residentliving water consumption prediction model. According to the method, the household water consumption terminal is used as a water consumption starting point; the total domestic water consumption of urban residents is used as a final water consumption accounting target; the influence effect of driving factors on the domestic water consumption of the urban residents is defined; and the water consumption rule in families is revealed. The method for predicting domestic water consumption of urban residents constructs a water consumption terminal-family-urban resident domestic water consumption modeland carries out scene analysis, so that a theoretical basis and a scientific basis are provided for making an urban resident domestic water consumption quota.

The invention discloses a new type of water cup device, which comprises a base body and a storage box installed on the top of the base body. A cavity is arranged in the bottom of the base body directly below the storage box, and a dispensing tube is fixedly arranged on the top of the cavity, which is elongated up and down. The extension section at the bottom of the delivery tube penetrates into the cavity, the left and right sides of the lower side of the cavity are provided with guide grooves, and the cavity between the guide grooves on the left and right sides is provided with slides extending to the left and right sides. For the sliding board, the elongated tail tips on the left and right sides of the sliding board are inserted into the guide grooves on the left and right sides respectively, and the guiding grooves on the left and right sides are equipped with the first screw-shaped grooves of the sliding board to cooperate with the sliding board and extend up and down. A screw-shaped rod, the top of the first screw-shaped rod is connected with the first driving device, and the sliding plate in the cavity is rotated and connected with the brushing and rotating shaft elongated up and down; the present invention is simple in structure, easy to operate, and improves Work efficiency and water adding efficiency, reduce labor.

Apparatus features a controller having a signal processor or processing module configured to: receive signaling containing information about a power profile that is specific to a pumping system having N parallel pumps and based upon data related to one or more of pumping system power, losses and wire-to-water efficiency in real time for the N parallel pumps configured to run in the pumping system to generate a head H and a flow F with an efficiency E, and at least one calculation / prediction of at least one corresponding efficiency of at least one combination / number of N−1 and / or N+1 parallel pumps to achieve a corresponding / same head H and flow F with a corresponding efficiency; and determine corresponding signaling containing information to control the operation of the pumping system that depends on a comparison of the efficiency E and the at least one corresponding efficiency, based upon the signaling received, including staging / destaging a pump to or from the pumping system.

The invention discloses an oil-water separation device for kitchen organic waste. The oil-water separation device comprises a main body support frame, a motor supporting frame is fixedly installed atthe position, close to one end, of the upper surface of the body supporting frame, a driving motor is fixedly installed on the upper surface of the motor supporting frame, a first shaft seat fixing frame is fixedly installed on the side, close to the motor supporting frame, of the upper surface of the main body supporting frame, and a first bearing seat is fixedly installed on the upper surface ofthe first shaft seat fixing frame. In the present invention, an arranged stirring cylinder is matched with a conveying paddle for use; oil and water in kitchen organic garbage can be thrown out; an arranged first electric air cylinder is matched with a movable baffle for use, so that the kitchen organic garbage is conveniently discharged by the conveying paddle, dross particles in the oil and water can be filtered out by an arranged oil and water separation mechanism, the oil and water are conveniently separated, and the oil and water efficiency is improved.

The invention relates to a sapling watering device, in particular to a sapling watering device used for a garden. The invention aims to solve the technical problem of supplying a way of providing thesapling watering device used for a garden, and the sapling watering device can lower a workload and can improve watering efficiency. The sapling watering device used for the garden comprises a bottomplate, first supporting columns, a second supporting column, a water tank, a rotary rod, a baffle plate and the like, wherein the top of the bottom plate is connected with two first supporting columns; the bottom plate, which is far away from the first supporting columns, is provided with the second supporting column; the water tank is fixedly connected among the top ends of the first supporting columns and the second supporting column; the bottom of the water tank is rotatably provided with the rotary rod; and the rotary rod is connected with the baffle plate. Through a driving mechanism, a water fetching mechanism can fetch water in the water tank, through the water fetching mechanism, water for watering saplings can be quantified, so that a user can conveniently water the sapling so asto lower the workload of the user, and in addition, sapling water efficiency can be improved.

The invention discloses a centralized whole-house water purification system for a residence community. The system comprises a prefilter, wherein the prefilter is connected to a municipal tap water pipe through an electromagnetic switch; the prefilter is connected with a low-voltage switch; one side, close to the low-voltage switch, of the prefilter is connected with a first TDS detector; one sideof the first TDS detector is connected with a first ultrafiltration membrane and a second ultrafiltration membrane, and the first ultrafiltration membrane and the second ultrafiltration membrane are communicated mutually; one side of the second ultrafiltration membrane is connected with a water softener; the water softener is connected with a salt tank; one side of the water softener is separatelyconnected with a first solenoid valve and a precision filter; one side of the precision filter is connected with a daily washing water system through a first household valve. The water purification system has the beneficial effects that a water purifier is operated at high water efficiency; wastewater is collected by a special container after washing for flushing toilets or greening; no wastewater is discharged; water is greatly saved.

The invention relates to an air water preparing machine high in work efficiency. The air water preparing machine is characterized by comprising an air inlet mechanism, a condensation mechanism, a water storage mechanism, a water purification mechanism and a water outlet mechanism which are sequentially communicated; the condensation mechanism comprises a heating assembly and a condensation assembly which are communicated with each other. The air water preparing machine high in work efficiency adopts air and water filtration, stores and uses obtained water well and improves the condensation effect by adopting wind power to drive a condensation pipe to rotate in the aspect of condensation, centrifugal movement on air in the air water preparing machine is achieved, and the water output efficiency is greatly improved.

The invention relates to a device and method of pumping water for railway car. The said device comprises water well communicated with the ground water main line and under ground; rubber water pipe and water tank above the carriage. The device also comprises water valve module in the well, coupler module, break valve module and valve for controlling the on-off of the water valve. The said ground water main line is connected with the coupler module by the water valve module and rubber water pipe. The water inlet and outlet on the top of the water are connected with a break valve module. When the break valve module is butted jointed with the coupler module, the whole water pipe is put through. The invention is adapted for any area and any season, with high water efficiency and convenient use and without wasting the water resource.

An efficient and energy-saving civil boiler using solar energy comprises a boiler body, a solar energy photovoltaic panel and a main controller, wherein the top end of the boiler body supports the solar energy photovoltaic panel through a supporting frame; a smoke vent is arranged at the lower left end of the boiler body; the main controller is arranged at the upper right end of the outer side of the boiler body; a heat preservation water tank is arranged at the upper end inside the boiler body; the middle of the bottom end of the heat preservation water tank is connected with the middle of the bottom end of the boiler body through a partition board; a combustion chamber is located on the left side of the partition board; a heating water tank is arranged at the upper end of the combustion chamber; a storage battery is arranged on the right side of the partition board; the upper end of the storage battery is connected with an electric heating water tank; the top end of the heating water tank is connected with the left side of the bottom end of the heat preservation water tank through a first water pipe; the first water pipe is provided with a first valve and a first water pump; the top end of the electric heating water tank is connected with the right side of the bottom end of the heat preservation water tank through a second water pipe; the second water pipe is provided with a second valve and a second water pump. The efficient and energy-saving civil boiler using solar energy is small in size, safe, environmentally friendly, high in hot water efficiency and suitable for civil use, and has the heat preservation function.

The invention discloses a high water efficiency water purification system which comprises an electromagnetic switch, wherein the rear end of the electromagnetic switch is connected with a front filter, the front filter is connected with a low voltage switch I, the low voltage switch I is connected with a booster pump and a reflux valve I, the booster pump is connected with an ultrafiltration membrane system, the lower end of the ultrafiltration membrane system is connected with a reverse osmosis membrane system, the lower end of the reverse osmosis membrane system is connected with a TDS detector I, the TDS detector I is connected with a sterilizer I, the sterilizer I is connected with a low voltage switch II, the low voltage switch II is connected with a water storage device, the water storage device is connected with a faucet, the lower end of the ultrafiltration membrane system is connected with a reflux valve II, the reflux valve II is connected with a sterilizer II, the sterilizerII is connected with a drain valve, the reverse osmosis membrane system is connected with a reflux valve III, the reflux valve II is connected with a sterilizer III, and the sterilizer III is connected with a TDS detector II. By means of using a tubular membrane ultrafiltration membrane system and a chlorine pollution resistant reverse osmosis membrane, the device has the advantages of good waterpurification effect and long service life.

The invention discloses a watering device for agricultural irrigation. The watering device comprises a device shell, a water storage tank, wheels, a power box, a water pump, a water outlet pipe, a water sucking pipe, spraying pipes, valves, a first telescopic pipe, a second telescopic pipe, a motor, a transmission belt, flanges, a nozzle bin, nozzles, connecting pipes, nozzle bases, fixed bases, connecting rods, movable tanks and movable bolts. By arranging the wheels on the lower side of the device base, connecting the motor with a wheel rotating shaft through the transmission belt and driving the wheels through the motor, the whole driving device is driven to move for watering and irrigating, the workload of a user is reduced, and watering efficiency is increased; through the water storage tank and a battery holder, the device is more convenient to use; by arranging the flange at one end of the second telescopic pipe and arranging the flange at one end of the water outlet pipe, the device can be fixed in situ for water pumping and irrigating work by connecting long pipes with one end of the second telescopic pipe and one end of the water outlet pipe.

The invention discloses a design method of efficient photocathode based on n-type monocrystal Si. The design method is characterized by comprising the following steps: S1, providing a n-type monocrystal Si wafer, texturing the front face and the back face of the n-type monocrystal Si wafer, and cleaning the etched surfaces; S2, manufacturing a boron-doped p+ emitter on the front of the textured n-type monocrystal Si wafer, and manufacturing a phosphor-doped n+ emitter on the back surface, etching the edge of the Si wafer, and cleaning; S3, orderly depositing Al2O3 and ITO film layers on the boron-doped p+ emitter surface in the step S2; and S4, orderly depositing the Al2O3 film layer, Ti and Pt metal layers on the phosphor-doped n+ emitter surface in the step S2. Through the design methodof efficient photocathode based on n-type monocrystal Si disclosed by the invention, the photocurrent density of the Si photocathode is obviously improved, the high photolysis of water efficiency is provided, the stability is enhanced, and the service life is long.

The invention discloses a vertical microwave photo-oxidative catalytic waste gas purifier which comprises a reaction unit and a control unit, wherein the control unit comprises a PLC automatic control unit, a microwave generation unit, a wastewater collection and discharge unit, an ozone detection unit, a VOC detection unit, a fault self-detection unit and a power module which is used for providing energy to the purifier; a gas inlet, a reaction cavity and a gas outlet are formed in the reaction unit; the reaction cavity is a vertical cavity in which a lamp tube is arranged; the gas inlet is arranged below the reaction cavity and the gas outlet is arranged above the reaction cavity; the gas inlet, the gas outlet and the reaction cavity are located on a same axle wire. Through the vertical reaction cavity, the gas inlet, the gas outlet and the reaction cavity are located on the same axle wire, so that the flowing direction of the gas does not deflect, the windage is reduced to the greatest extent, the gas flow is smoother and the operating energy consumption of the equipment is reduced; washing can be carried out from the top to bottom, so that the water efficiency is high, the wastewater is conveniently discharged to prevent waterlogging, and the humidity in the reaction cavity is reduced.

The invention discloses a water pump impeller which comprises a vane inlet angle (7) Beta 1 and a vane outlet angle (8) Beta 2; the range of Beta 1 is 10 degrees to 20 degrees; the Beta 2 is 25 degrees to 45 degrees. When the technical proposal is adopted, each vane adopts the most reasonable vane inlet angle and the vane outlet angle to improve the pump water efficiency of the cooling water and the cooling effect on the engine; a front retaining plate and a back retaining plate are arranged on the impeller to enable the impeller to be fully-closed type, so as to reduce the mounting gap between the water pump and the turbine shell; the proper number of vanes is adopted to further improve the work efficiency of the water pump; the impeller is made of engineering plastic for reducing the weight of the water pump.