113results about How to "Improve self-priming performance" patented technology

The invention discloses a liquid supply vehicle, which comprises a frame with a cab. The lower part of the frame is provided with wheels, the rear upper part of the frame is provided with a bedplate, a power driving device is arranged on the bedplate, a centrifugal pump is arranged below the bedplate, the power driving device is in transmission connection with the centrifugal pump, and an inlet and an outlet of the centrifugal pump are connected with a suction pipe and a discharge pipe respectively. The liquid supply vehicle has the advantages of improving the self-sucking effect of a fracturing truck, improving the operation efficiency of the fracturing truck and shortening the operation time, along with reasonable design, simple structure, easy assembly and manufacture, and also can be used for liquid delivery in other industries of flood drainage, sewage clearing and the like.

The invention discloses a balanced type double-row large-displacement axial plunger pump which comprises a swash plate, a cylinder body, a plunger pair, a valve plate, rotating plates and a driving shaft. The cylinder body is provided with two rows of concentric-circle cross-distributed holes, kidney-shaped holes of the holes incline towards the driving shaft, the kidney-shaped holes and the driving shaft cross by a certain angle to form a centrifugal oil shedding structure, and the self-suction capacity of the pump and the pump revolution speed allowable value are improved; the swash plate comprises two slopes which cross to for an X shape, the cross line passes through the center of a spline of the driving shaft, capsizing moment of reactive force of the swash plate on the cylinder body is reduced, the suspension length of the plungers is reduced, the stress condition of the cylinder body and the plungers is improved, and improvement of pressure rating of the pump is facilitated. The rotating plates are arranged on the two slopes, and abrasion of piston shoes and the swash plate is reduced.

An intelligent pump set of waste water treatment plant in new type is prepared as using relevant software to control said pump set, setting pump body to be U form for avoiding siphon, setting rotary stop pressurizing ring for preventing water from rotation to decrease flow rate of media for making gas-liquid be separated sufficiently, setting return unit between pollution discharge port connected through to pump liquid storage chamber and outlet connected through to pump gas-liquid separation chamber to return water back to said liquid storage chamber for raising self suction effect.

The invention relates to a multifunctional sludge, sewage and dirt treatment machine of a septic tank. The sludge, sewage and dirt treatment machine comprises a pumping system, a dispensing system group, a solid-liquid separation system, a base I, a plurality of connecting pipelines and a plurality of valves. The multifunctional sludge and sewage treatment machine integrates the dirt collection, crushing, slag removal, filtering, dehydration and packaging, can automatically classify and treat any domestic sewage and dirt, sludge and sewage of the septic tank into slag, clean water and recyclable organic manure raw materials (sludge), and is a movable environment-friendly and ecological treatment factory capable of intensively treating various domestic sewage, excrement dirt, sludge and sewage rather than a simple excrement pumping truck and a dirt suction truck.

This invention comprises front pump cover 11, rear pump cover 1, pump 3, cylinder 4, porting device 2, plunger 6 whose one end hinges the sliding boot 8, the other end is in the plunger cavity 30, swash plate 10 whose incidence can be or not be adjusted, static supporting 20 between the swash plate 10 and the sliding boot 8, hold-down spring 15, drive axle bearing and seal assembly 12, and drive axle 13; wherein the plunger 6 has inner cavity 19, a blind hole cavity with accumulator 5; between the sliding boot 8 and the swash plate 10 is a supporting plate 9 which can be rotated. Said invention can absorb the pulsing flow and hydrodynamic shock effectively, and it is especially fit for hydraulic driving pump and motor.

The invention discloses a handheld flushing pump, mainly comprising a pump body, a piston, an eccentric shaft, a motor, an input check valve and a drainage check valve, wherein the eccentric section of the eccentric shaft is inserted into a groove at the waist part of the piston, and when the motor drives the eccentric shaft to rotate, the piston moves to and fro so as to suck and drain off water. The pump body and the eccentric shaft are both directly mounted on the micro motor, so that handheld flushing pump is compact in structure, light in weight, small in size and convenient to move, and can be used at all sites with civil electricity; according to the character of pumps, the handheld flushing pump belongs to displacement pumps, has higher self-suction capacity, can perform flushing by only inserting a suction pipe into a water bucket, does not need to stop working even water in the water bucket is used up, and still can suck water for flushing by filling water into the water bucket, thus providing the capability of self-restoring after running out of water; furthermore, the pump has very high efficiency which generally can reach more than 70%. The handheld flushing pump has the advantages of compact structure, light weight, convenience to move, strong self-suction capacity, self-restoring after running out of water, and utilization of civil electricity.

The invention discloses a vertical internal and external mixing shaft-seal-free self-sucking pump which comprises a pump body, a pump cover, a pump shaft, a main impellor, a main impellor seal chamber, an assistant impellor chamber, an assistant impellor, a water sucking chamber, a water outlet, a water inlet pipe, a water inlet pipe flange, a volute chamber and a gas-water separation chamber, wherein the top surface of the main impellor and the top surface of the assistant impellor are respectively provided with a radial main impellor balancing rib and a radial assistant impellor balancing rib; the outer edge at the bottom surface of the assistant impellor is fixedly provided with an annular seal pad; and the bottom surface of the assistant impellor chamber is provided with an annular supporting plate. Through the self-sucking pump provided by the invention, the issue of air intake of a shaft seal can be solved, high-vacuum continuous air exhaust can be kept all the time in the self-sucking process, the self-sucking capability is improved, and the self-sucking time is shortened.

The invention relates to an oil-free rotary vane vacuum type self-priming centrifugal pump and a use method thereof. The oil-free rotary vane vacuum type self-priming centrifugal pump comprises a self-priming centrifugal pump body; a gas-liquid separation chamber, a liquid inlet pipe and a liquid discharging pipe are arranged on the self-priming centrifugal pump body; a first one-way valve is arranged on the liquid discharging pipe; a vacuum pump is integrated inside the gas-liquid separation chamber and integrated with the self-priming centrifugal pump body; the vacuum pump is an oil-free rotary vane vacuum pump and is provided with an inlet and an outlet; the inlet is communicated with the liquid inlet pipe through a suction pipeline; the outlet is communicated with the first one-way valve through an exhaust pipeline; a second one-way valve is arranged on the suction pipeline; the exhaust pipeline is provided with a third one-way valve and an electromagnetic valve; the third one-way valve is close to the first one-way valve; a liquid level switch is arranged on the liquid inlet pipe; the height of the liquid level switch on the liquid inlet pipe is lower than that of the suction pipeline; the liquid level switch is electrically connected with the vacuum pump and the electromagnetic valve. The pipeline system is simplified, the self-priming performance of the pump is improved, and the oil-free rotary vane vacuum type self-priming centrifugal pump has the advantages of being compact in structure, high in efficiency, long in service life and the like.

The invention discloses a hydraulic control system for an ocean engineering crane and belongs to the technical field of ocean engineering cranes. A main motor is connected with a main pump package; the oil outlet of the main pump package is communicated with the oil inlet of a reversing valve bank; the first oil outlet and the second oil outlet of the reversing valve bank are respectively communicated with two oil ports of a hydraulic motor through a balance valve bank; the oil return port of the reversing valve bank is communicated with the oil inlet of the main pump package; the hydraulic control system also comprises an oil supplement motor, an oil supplement pump and a hydraulic oil tank; the oil supplement motor is connected with the oil supplement pump; the oil inlet of the oil supplement pump is communicated with the oil outlet of the hydraulic oil tank; the oil outlet of the oil supplement pump is communicated with the oil inlet of the main pump package; the oil return port of the hydraulic oil tank is communicated with the oil return port of the reversing valve bank and the communicated pipeline is provided with a first one-way valve. The oil supplement motor is connected with the oil supplement pump, the oil supplement pump can sufficiently supplement hydraulic oil, and when the hydraulic pipeline is filled with the hydraulic oil, the first one-way valve can generate certain back pressure, the suction capacity of the main pump package is improved and the main pump package is prevented from sucking air and vibrating.

The invention discloses a two-screw pump and a preparation method of rubber lined screw rods of the two-screw pump. The two-screw pump comprises a pump body, a pump front cover, a pump rear cover, a driving screw rod and a driven screw rod, wherein the driving screw rod and the driven screw rod are arranged in the pump body and meshed with each other; the pump body adopts such a transmission manner that liquid inlets are formed in two ends of the pump body and a liquid outlet is formed in the middle of the pump body; the surface of the driving screw rod as well as that of the driven screw rod is lined with a layer of rubber. The preparation method comprises the following steps: conducting de-oiling and sand-blast treatment on the outer surfaces of the screw rods; coating the outer surfaces of the screw rods with a layer of an adhesive after cleaning and drying; placing the screw rods coated with the adhesive into a screw rod mold for rubber injection; performing vulcanization molding in a large-scale rubber vulcanization tank; opening the screw rod mold after cooling, so that the required rubber lined screw rods are obtained. The surfaces of the driving screw rod and the driven screw rod are lined with the layers of rubber in such a manner of local rubber injection and local air discharge, so that the preparation method is simple and easy to operate, the rubber injection difficulty is reduced, and the quality of a rubber body is also guaranteed; the two-screw pump is resistant to abrasion, high in sealing performance and long in service life, and the medium through capability can be effectively improved.

The invention provides a double-outlet multipurpose external mixing type self-priming pump with a quasi-spiral suction chamber. The double-outlet multipurpose external mixing type self-priming pump mainly comprises an inlet flange, a pump body, an impeller, an air-liquid separating pipe, a rear cover, a suspension body part, an outlet flange and a flange cover, wherein the pump body is formed by the quasi-spiral suction chamber, a spiral compression chamber and a liquid storage chamber through integral casting and is provided with double outlets and the like. The hydraulic performance of the pump is effectively improved while the self-priming performance of the self-priming pump is improved, the flow losses of fluid media in a suction chamber and a water compressing chamber are remarkablyreduced, and the double-outlet multipurpose external mixing type self-priming pump has the advantages of being high in efficiency and reliability, compact in structure, convenient to install and maintain and multipurpose, serving as a pipeline self-priming pump accessed horizontally only by slightly adjusting an installing mode and the like, is suitable for the fields of agricultural irrigation and drainage, river and pond breeding, municipal drainage, petrochemical metallurgy and the like and can be installed on a movable pump truck for fire-fighting operation and the like.

The invention discloses a disposable self-suction drinking water tank and a bracket of a water dispenser. The disposable self-suction drinking water tank of the water dispenser comprises a drinking water tank, wherein a water outlet connector is arranged on the drinking water tank; and a water outlet cover is arranged on the water outlet connector, and connected with an inlet of the water dispenser. The disposable self-suction drinking water tank and the bracket of the water dispenser are characterized in that: the water dispenser is provided with the bracket; the drinking water tank is reversely positioned in the bracket; the bracket comprises a main body; the bottom of the main body is provided with a connection base which is matched with the top of the water dispenser; a supporting plate with an opening is arranged in the main body; the tank body of the drinking water tank is a soft tank body which is reversely positioned on the supporting plate; the water outlet connector passes through the opening; and the tank wall of the soft tank body is provided with self-suction long and short indentations and convex plates, and the top surface of the soft tank body is uniformly provided with raised lines.

The inveniton provides a fluid pressure supply device of transmission, which comprises a first and a second fluid pressure pumps respectively driven by the first and the second driving powers, and can improve the self-absorption of working fluid of the second fluid pressure pump. The device comprises a liquid pressure pump (46c) which is driven by an engine carried on the vehicle for discharging the liquid pressure to an oil way (46e) connected to the belt wheel of CVT; a first and a second pressure regulating valve (46l, 46m) for inputting the discharged fluid pressure, and the pressure is outputted from the channle formed by ring groove etched on the valve column for supplying to the belt wheel, moreover, the leakage part of the inputted liquid pressure is discharged from a second output port (46l6, 46m6); an electric hydraulic pump (46mm) driven by an electric motor (74) for discharging the liquid pressure, moreover, the second output port (46l6, 46m6) of the first and the second pressure regulating valve are connected to a suction inlet (46mm1) of the electric hydraulic pump through oil way (46vv, 46ww, 46xx).

The invention discloses a water purifying device for a fish tank. The water purifying device comprises a box body. A first supporting plate is fixedly connected with the portion, between the two opposite sides, of the top of the inner wall of the box body. One side of the top of the first supporting plate is fixedly connected with a first self-suction pump. A water inlet end of the first self-suction pump is communicated with a water suction pipe. The side, close to the first self-suction pump, of the top of the first supporting plate is fixedly connected with an impurity removal box. A secondsupporting plate is fixedly connected with the portion, between the two opposite sides and below the first supporting plate, of the inner wall of the box body. A water purifying box is slidingly connected with the top of the second supporting plate. A second slide rail and a third slide rail are fixedly connected with the two opposite sides of the inner wall of the box body sequentially from topto bottom. The top of the second slide rail is slidingly connected with a first filter element. The top of the third slide rail is slidingly connected with a second filter element. A second self-suction pump is fixedly connected with the bottom of the inner wall of the box body. The invention relates to the technical field of water purification. By means of the water purifying device, the problemthat water in the fish tank needs to be changed frequently is solved, and the ornamental value and the health of fishes are ensured.

The invention belongs to the technical field of low-pressure fuel pumps of an aviation engine fuel system, and relates to a fuel inlet device for improving the self-suction capacity of a centrifugal pump. The device comprises an integrated induction impeller (1), a pump cover (2) and an injection pipe (3), and a formed internal structure comprises a mixing section (4), a nozzle (5), a throat pipe(6), an oil return pipe (7), a diffusion section (8) and an oil return port (9). According to the device, the pump cover of the centrifugal pump is skillfully utilized, the oil return port and the oilreturn pipe are arranged to introduce high-pressure oil at an outlet back to an inlet, and the jet flow is formed through the nozzle, so that the energy at the inlet is increased and the cavitation resistance is improved while the self-suction capacity of the inlet is improved; and the device is simple in structure and easy to realize, and the weight and the space are saved.

The invention provides a temperature-resistant and salt-resistant fracturing fluid imbibition agent, and a preparation method and application thereof, and belongs to the technical field of oil exploitation, transportation and chemical engineering. The target product is obtained by taking Br(CH2)mCOOC2H5, N-methylimidazole, R1(Me)SiHO[(Me)2SiO]nR2 as reaction raw materials and enabling a reaction to be carried out stably under the cooperation of a preferred process. The temperature-resistant and salt-resistant fracturing fluid imbibition agent provided by the invention can show good imbibitionperformance in an environment with a mineralization degree of 19334 mg/L (wherein the total amount of calcium ions and magnesium ions is 514 mg/L) and a high temperature of 150 DEG C.

The invention discloses a high-efficiency energy-saving self-priming centrifugal hydraulic system, and relates to the technical field of water pumps. The high-efficiency energy-saving self-priming centrifugal hydraulic system is characterized in that the high-efficiency energy-saving self-priming centrifugal hydraulic system comprises a pump body, the pump body is provided with a centrifugal impeller, a water inlet channel, a centrifugal cavity and a water outlet channel, the pump body is provided with an ejector, an energy storage bin, a communication channel and a self-adaptive regulating valve, the self-adaptive regulating valve comprises an outer shell and a self-adaptive floating ball body, the outer shell is provided with a streaming cavity, a water inlet and a water outlet, the streaming cavity comprises a guide section, the water inlet channel is provided with a narrow opening section, the energy storage bin is provided with a water supplementing inlet, the inner wall of the water inlet channel is provided with a stepped annular groove, the end of the centrifugal impeller is provided with a protrusion, the inner wall of the water outlet channel is provided with a backflow cavity, and the inner wall of the backflow cavity is provided with an elastic arc plate. By arranging the ejector and the self-adaptive regulating valve, so that the energy loss of the pump body is reduced, the energy utilization rate of the pump body is increased, and the pump body is more efficient and energy-saving; by arranging the narrow opening section, the self-priming capacity of the pump body is improved; and by arranging the elastic arc plate, the energy utilization rate of the pump body is further increased.

The invention relates to an integrated low-pulsation seawater desalination energy recovery and pressurization device. A structure type of a rotary pressure exchanger and a swash plate plunger type booster pump is adopted; the low-pressure area of a fresh seawater valve plate has an open design; a pressure exchanger cylinder hole directly sucks water from a cavity of a device shell during operation, so that the suction performance is improved; the inlet of the booster pump is equipped with high-pressure water, so that the self-suction performance is improved; the flow pulsation of a high-pressure seawater outlet is reduced through water suction and drainage of a plurality of plungers, the flow quality of an energy recovery supercharging device is improved, the impact of the outlet flow pulsation of the device outlet on a reverse osmosis membrane is reduced, and the service life of the reverse osmosis membrane is improved. The device provided by the invention overcomes the defects of lowintegration degree, large flow pulsation, large volume weight and the like of a rotary energy recovery device in the prior reverse osmosis seawater desalination system, and has the obvious technicaladvantages of high energy recovery rate, high flow quality, high integration degree, small structure size and the like.

The invention discloses a centrifugal water pump. A pump shell of the centrifugal water pump is divided into a front section and a rear section, wherein the front section and the rear section are connected with each other, the front section is provided with a pump volute and the rear section is provided with a segmented pump shell. An eccentric rotor with fixed blades is installed in the pump volute. A semi-open type tangent impeller is installed in the segmental pump shell, and blades of the semi-open type tangent impeller are in a radial structure at the rotation center. The centrifugal water pump has a low flow rate, high pressure and high self-suction capability of a plunger pump, overcomes the defects of an existing centrifugal pump as a high-pressure cleaning pump, fundamentally overcomes the defects of the plunger pump in operation, enables the structure of the centrifugal water pump to be simpler and enables the operation to be more stable, can effectively save the use energy consumption, and improves the efficiency and the application stability, so that the centrifugal water pump can be well applied to high-pressure cleaning equipment.

The invention relates to a low-noise two-way servo pump source which comprises an oil tank, a pump source assembly, a valve control set, a hydraulic cylinder, a cooler and an oil return filter. The pump source assembly comprises a double-shaft-extension servo motor, a first hydraulic pump, a second hydraulic pump, a first clutch and a second clutch. The valve control sets comprise the first valve control set and the second valve control set, the hydraulic cylinder comprises a cylinder body and a piston, and the piston is slidably connected to an inner cavity of the cylinder body and divides the inner cavity of the cylinder body into a first cavity and a second cavity. Reciprocating motion of the hydraulic cylinder is achieved through forward rotation and reverse rotation alternate motion of the double-shaft-extension servo motor, the reciprocating motion speed of the hydraulic cylinder is achieved by adjusting the rotating speed of the double-shaft-extension servo motor, and therefore bidirectional speed regulation and direction control of the whole hydraulic transmission system are achieved. The device is simple in structure, low in noise, high in reliability and wide in speed regulation range.