58results about How to "Increase the suction lift" patented technology

The invention discloses an injection pump and a suction method thereof. The injection pump comprises a suction pipe, a nozzle, a choke inlet section, a choke, a diffusing pipe and an annular nozzle, wherein the caliber of a discharging hole of an inner cavity of the nozzle is more than that of a feeding hole of the inner cavity of the nozzle, the discharging hole of the inner cavity of the nozzle is sequentially communicated with the choke inlet section, the choke and the diffusing pipe, the caliber of the inlet end of the choke inlet section is more than that of the outlet end of the choke inlet section, the caliber of the outlet end of the diffusing pipe is more than that of the inlet end of the diffusing pipe, an annular air chamber is arranged on the outer side of the nozzle and communicated with an air inlet pipe, a ventilating annular gap is arranged between the inner wall of the annular nozzle and the nozzle, one end of the gap is communicated with the inlet end of the choke inlet section, and the other end of the gap is communicated with the air chamber. The invention has the advantages that the injection pump has high vacuum degree by completely using an air medium as power, strong self-absorption capacity, high suction stroke, no blockage and low cost, is suitable in environments with high temperature, high pressure, deep water, strong radiation, strong corrosion and the like, and can be used for sucking fluid with higher concentration and larger-particle solid materials.

The invention belongs to the technical field of spraying machinery, and particularly relates to an external soil spraying machine and a special two-stage energy-saving high-lift underflow pump for the external soil spraying machine. The underflow pump comprises a transmission shaft, a pump body, a bearing chamber and a coupling, wherein the pump body comprises a one-stage pump body, a two-stage pump body and a two-stage feed pump body; a one-stage impeller is fixedly mounted at the right end of the transmission shaft in a sleeving manner; an elbow is communicated between the one-stage pump body and the two-stage feed pump body; a guard plate is arranged between the two-stage feed pump body and the two-stage pump body; a locating sleeve is mounted on the transmission shaft between the two-stage feed pump body and the two-stage pump body in a sleeving manner; a two-stage impeller is mounted on the locating sleeve in a sleeving manner, and mounted between a radial flange at one end of the locating sleeve and the guard plate; a feed channel is formed between the guard plate and the locating sleeve; the one-stage impeller and the two-stage impeller are mounted back to back; the bending direction of a helical blade of the one-stage impeller is counterclockwise; the bending direction of a helical blade of the two-stage impeller is clockwise; a horizontal feed port is formed in the right end face of the one-stage pump body; and a discharge port is formed vertically in a tangential direction of the pump body on the front side of the two-stage pump body. The underflow pump is higher in lift, and is suitable for conveying viscous slurry; the structure of the spraying machine is simplified; the manufacturing cost and engineering use cost of the spraying machine are lowered; breakdown maintenance points of the spraying machine are decreased; and the power loss of equipment is reduced.

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 discloses a high-performance strong-corrosion-resistant self-sucking pump. The self-sucking pump comprises a foundation which is fixedly connected with a pump body; the self-sucking pump is characterized in that: a trumpet-shaped suction pipe with a conical hole is arranged in the pump body; a jet flow nozzle is arranged in a pump front cover at the front end of the suction pipe, and a guide wheel and an impeller are arranged at the rear end of the suction pipe in a rotatable way; the rear end of the pump body is provided with a pump cover; the impeller is connected with a drive mechanism through a rotation shaft or in a magnetic transmission mode; the upper wall of the pump body is communicated with a pump body outlet; the jet flow nozzle is fixedly arranged in front of the front mouth of the suction pipe; the jet flow nozzle is communicated with a pressure chamber of the pump body through a channel in the pump body; and a check valve is fixedly arranged in the inlet of the pump body. Due to the creative design of a product, air and liquid separation is performed quickly, the self-sucking time is reduced obviously, the sucking travel is greatly improved, and the problem that a product cannot be conveyed under the working conditions of long sucking travel and high self-sucking frequency of the conventional corrosion-resistant self-sucking pump can be solved completely.

The invention discloses a portable drinking water device which comprises a crank, a water drawing device and a filter, wherein the crank is connected with the water drawing device; the water drawing device is connected with the filter; the water drawing device comprises a main body shell, a water pump and a water drawing pipe; the water pump is arranged in the main body shell; the water drawing pipe is connected with the water pump; the water inlet end and water outlet end of the water pump are respectively provided with a one-way valve; a filtering membrane is arranged in the filter; and the crank can be folded and directly demounted. The invention can draw underground water, and carry out deep filtration treatment on various types of water to achieve the drinking water standard; and the portable drinking water device is light and portable.

The invention relates to a strong self-sucking double-suction pump and belongs to a combination of a double-suction pump, a self-sucking pump, a vacuum pump unit and an automatic control system. The strong self-sucking double-suction pump has ultrahigh suction and ultrafast self-sucking functions, taking DN300 aperture as an example, suction of one meter can be sucked about within 30 seconds, and self-sucking dry starting and automatic control can be realized without irrigation of water. When a main pump starts, then the vacuum pump unit also starts at the same time, and the vacuum pump unit automatically stops when the vacuum degree is increased until the water pump is capable of discharging water. During use, the vacuum pump unit starts automatically when the vacuum degree is lowered to the low order, and automatically stops when the vacuum degree is increased to the high order. Operation of the main pump is not interfered by a vacuum degree control system which only plays a role in assistance. The strong self-sucking double-suction pump is designed to be of a dry-grinding-resistant structure, has functions of sucking shallow water, air-water mixed liquors and the like and can be widely applied to occasions such as flood fighting and emergency rescues, drainage of stagnant water and firefighting, and a water-pump mechanical seal can operate for more than 30 minutes without being damaged.

The invention relates to a high flow self-adsorption centrifugal pump, which arranges an S-shape tube inside the case of said pump. Wherein, the upper end of said S-shape tube is connected to the inlet pipeline, while its lower end is through to the inlet of blade wheel; a group of rectangle nozzles which point to the inlet is mounted at the outer side of said S-shape tube; a big channel for connecting the outlet expansion pipe and the rectangle nozzle is arranged inside the pump; and a valve plate is arranged at the inlet of rectangle nozzle with / without spring. The invention has the advantages that: it can reduce the volume of pump, improve the pumping speed, and increase the pumping range and delivery lift (without mounting valve at the nozzle inlet).

The invention relates to an aluminum cast pump body. The aluminum cast pump body comprises a base and a column body. The base is square. A circular convex edge is arranged on the lower surface of the base, and four first shaft holes are formed in the middle portion of the circular convex edge; and the circular convex edge is connected with the four corners of the square base through four evenly-distributed connecting strips, and a semicircular notch is formed in the position of the midpoint of one side of the base. The column body is fixedly connected to the upper surface of the base, the upper surface of the column body is in an inverted T shape, and a semicircular groove is formed in the middle portion of the upper surface of the column body; and six second shaft holes are formed around the semicircular groove and stretch to the middle portion of the column body, and the structure is simple. The base and the column body of the aluminum cast pump body are both made of a three-dimensional braided fiber / aluminum alloy composite material, so that the size, mass and cost of the aluminum cast pump body are reduced, the comprehensiveness of the aluminum cast pump body is improved, and installation and maintenance are convenient; and during use, the aluminum cast pump body is low in noise, long in suction head lift and long in service life.

The invention discloses a water-bearing structure conduction water flow control device and a working method thereof. The device comprises a water-bearing structure embedded into a soil simulation model, the water-bearing structure is connected with a water tank respectively through a water-bearing structure water inlet pipe and a water-bearing structure water outlet pipe, a water inlet device for controlling the water flow of the water-bearing structure water inlet pipe is arranged on the water-bearing structure water inlet pipe, a water outlet device for controlling the water flow of the water-bearing structure water outlet pipe is arranged on the water-bearing structure water outlet pipe, both the water inlet device and the water outlet device are connected with a flow controller for controlling the real-time flow and the overall flow of the water-bearing structure and keeping the water inlet flow and the water outlet flow of the water-bearing structure consistent as far as possible, and the flow controller is connected with a computer. The water-bearing structure conduction water flow control device has the advantages that the device is low in price and high in flow, suction is more than 4 meters, a small amount of silt can pass the device, the real-time flow and the overall flow can be controlled by feedback and displayed in real time, and control is automated.

An energy-saving efficient multi-purpose water pump is composed of pump body, centrifugal blade wheel, self-priming blade wheel, and pump shaft common to said both blade wheels. Said two blade wheels are respectively arranged the centrifugal cavity and self-priming cavity of pump body, which are isolated by pump cover. Its advantages are dual functions (centrifugal pump and self-priming pump), high delivery lift efficiency and flow, low energy consumption, and small size.

The invention discloses an improved double-suction self-priming pump with a strong self-priming property, and belongs to combination of a double-suction pump and a self-priming pump and combination of a vacuum pump set and an automatic control system. An auxiliary vacuum pump set with the strong self-priming property introduces a new model of placing a mechanical float valve and a monitoring probe in an automatic control water diversion tank, and reliability of equipment is greatly improved. A vacuum pump constantly runs, the water level in the tank reaches a certain position, and the mechanical float valve can be automatically closed owing to buoyancy, so that water cannot enter the vacuum pump. Besides, a water stop valve is additionally arranged, water vapor is effectively stopped from entering the vacuum pump, and parts of the vacuum pump cannot be damaged due to entering of the water. The improved double-suction self-priming pump has ultrahigh suction and ultrafast self-priming functions, can run in a self-priming manner without water diversion and irrigation, can realize dry starting and automatic control, is particularly applicable to a locomotive integrated mobile pump station and can be widely applied to occasions such as flood-fighting and emergency rescue, flood drainage and fire fighting.

The invention discloses a mechanical device which generates electricity by using sea wave, which comprises a cylindrical doliform guide rod, a floater with a cylindrical doliform guide tube, a cylindrical doliform movable rod, a triangle beam, a transfer rod, a piston water pump and a water wheel generator, wherein the guide rod is fixed at the sea bottom vertical to the sea water plane, the guide tube on the floater is sleeved on the guide rod, the movable rod is inserted in the guide rod, two ends of the triangle beam are connected to the top of the movable rod, a cardan joint is connected to the middle of a lower side surface of a lower chord of the triangle beam, an upper end of the transfer rod is connected to the other end of the cardan joint, a lower end of the transfer rod is connected to a piston and is inserted in the water pump, the water pump is fixed on the floater by crossing the middle of the floater, and a lower end of the water pump is a horn mouth in shape with a flange and is connected to the water wheel generator through a bolt. The principle of the invention is that the floater moves up and down along the guide rod when running into the waves, drives the movable rod and the transfer rod to make the water pump to draw water and drain off water, thereby pushing the water wheel generator to generate. The mechanical device which generates electricity by using sea wave has the characteristics of simple and rational structure, low manufacturing cost, economy, environmental friendliness, high energy conversion rate and the like.

The invention discloses a high-absorption process energy-saving device of a pneumatic diaphragm pump. The device comprises the diaphragm pump, wherein an inlet and an outlet are formed on the diaphragm pump; the diaphragm pump is connected with an air inlet pipe; the air inlet pipe is communicated with an air source input pipeline and is then connected with the air inlet of the diaphragm pump after sequentially passing through a manual ball valve, an air filtering and pressure regulating valve and a leakage ball valve; a first pipeline is connected to the inlet; the other opening of the first pipeline is vertical downwards and is connected with a first end of a tee joint; a second end of the tee joint is communicated with the air source input pipeline through an air pipe; the manual ball valve and the air filtering and pressure regulating valve are arranged on the air pipe; a third end of the tee joint is connected to a second pipeline which is vertical downwards; and a bottom valve is arranged on the second pipeline. The absorption process can be improved by 20m; and the diaphragm pump is more convenient to use, saves energy and improves benefit.

The invention provides a self-suction type novel liquid sulfur pump. The self-suction type novel liquid sulfur pump is mainly characterized in that a blade pump is adopted as a conveying pump, a self-suction device comprises a vacuumizing device, a control cabinet and an air exhaust pipeline, and the control cabinet controls automatic starting and stopping of the vacuumizing device and the conveying pump; the whole device is provided with a steam inlet and a steam outlet, and the pipeline, a connector, a pump body, a pump cover and the like are all additionally provided with tracing pipes and tracing cavities; a pump outlet pipeline is additionally provided with a backflow pipeline and an outlet pipe valve; and the backflow pipeline is provided with a backflow pipe valve, and a backflow pipe outlet is connected with a liquid storage tank. The self-suction type novel liquid sulfur pump has the beneficial effects that the self-suction type novel liquid sulfur pump is convenient to maintain, not prone to damage, capable of achieving self suction, high in suction stroke and capable of avoiding machine seal dry grinding, steam tracing is added to the pipeline, the connector, a mechanical seal and the conveying pump, it is prevented that the temperature of a medium is reduced due to the effect of the outside and the medium is condensed after the medium leaves the liquid storage tank, and by means of the backflow pipeline, condensation, caused by non-flowing of the medium in the conveying pump, of the medium left in the pump can be prevented when the device shuts down.

The invention discloses a portable water purifying device which comprises a casing, wherein a hand-operated water pump and a water filter device are mounted in the casing; the hand-operated water pump comprises a rocking handle, a reduction box and a pump body which are sequentially connected, the pump body is provided with a first working cavity and a second working cavity which are mutually spaced and provided with water inlets and water outlets, and a water inlet of the first working cavity is connected with a water pumping pipe extending out of the casing; and the water filter device comprises an ultra-filtration diaphragm filter, an RO (reverse osmosis) diaphragm filter and a water storage box, the water outlet of the first working cavity, a water inlet and a water outlet of the ultra-filtration diaphragm filter, a water inlet and a water outlet of the water storage box, the water inlet and the water outlet of the second working cavity, as well as a water inlet and a water outlet of the RO diaphragm filter are sequentially connected in series and communicated, and the water outlet of the RO diaphragm filter is connected with a water outlet pipe extending out of the casing. The portable water purifying device can pump water at 10-15 m depth underground, the lift can reach a height of 150-200 m, and various types of water can be deeply filtered and treated to meet the standard of purified water for drinking.

The invention relates to a small-sized stamping and injection molding self-priming pump which comprises a motor, a water inlet / outlet section and a base. The water inlet / outlet section is provided with a water inlet and a water outlet. An impeller is connected to an output shaft of the motor. A sealing base plate and a mechanism seal are mounted between the impeller and the motor. The sealing baseplate is assembled on the motor. The mechanism seal sleeves the output shaft of the motor, and is arranged between the sealing base plate and the impeller. A guide vane and a guide vane seat are arranged inside the water inlet / outlet section. The guide vane and the impeller are coaxially arranged and mounted on the impeller. The other end of the guide vane is connected onto the guide vane seat. Ajet device is mounted between the guide vane and the water inlet in the water inlet / outlet section. The water inlet / outlet section, the sealing base plate and the motor are all mounted on the base. Compared with the prior art, the small-sized stamping and injection molding self-priming pump is novel and simple in structure, and reasonable in design, the suction of a water pump is increased, the lift is increased, the efficiency is improved, the problem that the water is polluted since a casting water pump is rusted is solved, the weight of the water pump is reduced, so that the whole water pump is lightened, environmental-friendly and worthy of popularization and application.

The invention relates to a full automatic vacuum suction piloting device which aims to remove the bottom valve of the water pump. The operation of the water pump without the bottom valve can realize energy conservation, enhance the pump efficiency, increase the suction lift of the water pump and prolong the service life of the water pump. The automatic vacuum suction device mainly comprises a motor direct-connected small-diameter large-lift-height centrifugal pump, a water flow ejector pump, a water level sensing and water flow cut-off device and an electric cabinet. The invention has the advantages of simple structure, small size, favorable properties, high automation degree, convenient installation and maintenance, and the like, and can be a general purpose standard facility for realizing water pump without bottom valve.

The invention relates to a vacuum self-sucking pump with a suction aid mechanism. The vacuum self-sucking pump comprises a pump body and a power part, wherein mainly the suction aid mechanism is disposed at an inlet channel of the pump body, and the suction aid mechanism is composed of a vacuum water diversion device, a vacuum pump and a condenser; a spindle of the vacuum pump is connected to a belt wheel fixed on a pump shaft by a belt, a first inlet of the vacuum pump communicates with the inlet channel of the pump body by the vacuum water diversion device, an outlet of the vacuum pump communicates with an inlet of the condenser, an outlet of the condenser communicates with a second inlet of the vacuum pump; an inlet of a water diversion chamber of the vacuum water diversion device communicates with the inlet channel of the pump body, and the first inlet of the vacuum pump communicates with a vacuum air vent disposed inside the vacuum chamber of the vacuum water diversion device; and oil is injected in a machine body of the condenser, an inlet of the condenser is located above the oil plane, an outlet of the condenser is located under the oil plane, and an air vent is disposed in the upper plane of the machine body of the condenser. When the pump is switched on, the suction aid mechanism starts work at the same time and suck air in the pump chamber. In this way, normal operation of the pump can be implemented and the pump operation can be kept safe; and a suction distance and efficiency can be increased.

The invention relates to a system for detecting the film integration of film biological reactor, belonging to the technique of water detection. Wherein, the water outlet tube is mounted with a control valve, while it is connected to the water outlet pump and the water outlet main tube; the water outlet main tube is mounted with a control valve; the water outlet and the control valve have a sampling tube between them which is mounted with a control valve; the sampling tube is connected to the water pump; the water pump is connected to the middle container that connected to the sampling pump; the sampling pump is connected to the linear turbidity detector; the tube between the water outlet pump and the control of water outlet main tube is connected to the sampling tube of water outlet main tube, while its one end is connected to the tube between the sampling pump and the middle container; the sampling tube of water outlet main tube is mounted with a control valve. The invention is characterized in that: 1, the invention can cycled detect the water outlet main tube and the film element, with functions of intelligent judge, automatic record and hurt alarm; 2, the speed of getting water is high, with quick response, uniform water flow, lower cost and reliable operation; 3, it can be used to detect the hurt of film element of the large-flow, high integrated, multi-film element film treating system.

The invention discloses a jet flow and blade combined pump, aiming at providing an integral pump which has the advantages of large suction range of a jet flow type pump and high stroke of a blade typepump, and also has the advantages of no need of long connecting pipes and compact structure. The invention has the technical characteristics that the jet flow type pump is composed of an input port (11), a jet nozzle (2), a choke (3) and a diffusion pipe (5); the blade type pump is composed of an impeller (6), a volute (17), an output port (10) and a motor (7); the invention combines the jet flowtype pump and blade type pump in one casing (16) in the mode of series connection, wherein the input port (11) of the jet flow type pump is the input port of the integral pump, and the output pump (10) of the blade type pump is the output port of the integral pump. The combined pump of the invention is used for household water lifting and water pressurization, and has obvious advantages.

A large flow self-suction centrifugal pump consists of S-shaped curve pipe whose upper end connected with water inlet pipeline and lower end communicated with inlet of impeller, plurality of nozzles set on outer side of S-shaped curve pipe, a large duct from outlet extended pipe to inlet of nozzle, the spring valve board can be installed or not be installed in inlet of nozzle. Said invention raises water pumping speed and efficiency.

The invention discloses an emergency fire pump of a marine diesel engine. A diesel engine is in transmission connection with a sliding vane pump through a coupler, and the diesel engine and the sliding vane pump are fixed on the base. The emergency fire pump of the marine diesel engine is simple in structure, has abilities of high suction lift and strong self priming; the working efficiency of the emergency fire pump is improved; the positive displacement pump is internally provided with graphite sliding vanes; lubrication between members in the positive displacement pump is ensured; and the probability of faults is reduced.

The invention provides an auxiliary suction mechanism for a sewage suction truck and the sewage suction truck. The mechanism comprises an outer cylinder, an inner cylinder, a hydraulic motor, a bearing, an oil conduit, a negative pressure transducer, an magnetic exchange valve and a gear pump, external teeth are arranged on the outer side surface of the inner cylinder, a work station hole is formed in the middle of the outer cylinder, and a helical blade is arranged on the inner wall of the inner cylinder. When a sewage suction pipe sucks blocky deposits, medium resistance in the sewage suction pipe can be increased, the suction speed of the sewage suction truck is slowed down, and even the blocking and stagnation situations are likely to occur. When the value obtained by the negative pressure transducer reaches a preset value, the auxiliary suction mechanism is started, the helical blade in the inner cylinder rotates, the blocky deposits are crushed, and the blocky deposits are suckedvery hard to be pushed into a storage tank. Therefore, the work efficiency of suction of the sewage suction truck is improved, the blocky deposits can be crushed effectively through the auxiliary suction mechanism, the phenomenon that the sewage suction pipe is blocked is prevented, the problem that a vacuum pump is too heat is avoided, and the service life of the vacuum pump is prolonged.

The invention discloses an intelligent and efficient self-priming pump, and mainly solves the technical problems of low priming stroke, long water feeding time and unstable water pressure of an existing self-absorbing pump. The intelligent and efficient self-priming pump is characterized by comprising a pump body (1) and a motor (3) mutually connected, the pump body (1) comprises a front pump body(11) and a rear pump body (12), a liquid sensor (14) is arranged on a liquid inlet seat (114) of the front pump body (11), an isolation cavity body (1251) is formed in the rear pump body (12) and isin sealed and matched connection with a laryngeal cavity (119) in the front pump body (11), the other end of the isolation cavity body (1251) is matched with a pump rear seat (121) of the rear pump body (12) in a sealed mode to form an isolation cavity (125), the isolation cavity (125) communicates with the laryngeal cavity (119), an impeller (126) is arranged in the isolation cavity (125), the impeller (126) is mounted on a pump shaft (127) in a sleeving mode, and the pump shaft (127) is connected with the motor (3).

The invention discloses a sustainable water pumping device capable of automatically adjusting the size of a water inlet. The sustainable water pumping device capable of automatically adjusting the size of the water inlet structurally comprises a pump body, a water outlet, the water inlet and an adjusting device, wherein the pump body is respectively provided with the water outlet and the water inlet; the adjusting device is arranged on the water inlet and consists of a shell body, an air bag, a ball body, a roller set, a pull rope, a hinge seat, a shielding plate and a resetting mechanism; theshell body is arranged on the bottom of the water inlet; the hinge seat is connected to the side face of the water inlet; the hinge seat is provided with the shielding plate; the shielding plate is movably connected with the hinge seat through the resetting mechanism; the shielding plate is connected with the pull rope; the pull rope penetrates through the roller set to be connected with the ballbody; and the ball body is wrapped in the air bag. The sustainable water pumping device capable of automatically adjusting the size of the water inlet has the beneficial effects that the size of thewater inlet can be automatically adjusted through the height of the liquid level, so that the suction distance is increased, liquid extraction failure is prevented, and the extraction work can be continuously carried out; and the corresponding shielding speed can be adjusted according to the difference of the viscosity of the liquid through the adjustment of the pull rope on the shielding plate, and the use is more convenient and rapid.

Present invention refers to high flow rate self-priming centrifugal pump. It contains S-bend duct, feed water piping connected with upper end of S-bend duct, impeller, non - circus abnormal shape nuzzle whose outlet pointing to impeller inlet, major path between water pump water pump outlet diverging duct to nuzzle. Valve plate with spring can be set at inlet of abnormal shape nuzzle. Said invention can reduce self-priming pump volume and raise water pumping speed, and pump efficiency (installing valve at nozzle inlet), or raise suction lift and lift (not installing valve at nozzle inlet).

The invention relates to a hand-operated ground type biogas discharging pump. The traditional hand-operated pump has problems of small application range, bulkiness, inconvenience for movement and poor blocking resistance and passing performance. The biomass discharging pump comprises an upper pump body (1); a liquid discharging pipe (2) is arranged at one side under the upper pump body; a cylinder sleeve (3) is connected under the upper pump body; a liquid inlet pipe is connected under the cylinder sleeve; the liquid inlet pipe is connected with a one-way valve (5); the liquid inlet pipe is connected with a liquid sucking pipe (6); the liquid sucking pipe is connected with a liquid sucking head (7) with the one-way valve; and the upper end part of the upper pump body is connected with a discharging device which is connected with a piston (14). The product is a hand-operated pump.

The invention discloses an efficient self-priming pump, and mainly solves the technical problems of low pumping, long water loading time and instable water pressure in a traditional self-priming pump.The efficient self-priming pump comprises a pump body (1) and a motor (3) connected with each other; the pump body (1) comprises a front pump body (11) and a back pump body (12); the back pump body (12) is provided with an isolation cavity (1251) in sealing fit connection with a throat cavity (119) in the front pump body (11); the other end of the isolation cavity (1251) is in sealing fit with apump back base (121) of the back pump body (12) to form an isolation cavity (125); the isolation cavity (125) communicates with the throat cavity (119); an impeller (126) is arranged in the isolationcavity (125), and sleeves a pump shaft (127); and the pump shaft (127) is connected with a motor (3).

The invention discloses a water-bearing structure conduction water flow control device and a working method thereof. The device comprises a water-bearing structure embedded into a soil simulation model, the water-bearing structure is connected with a water tank respectively through a water-bearing structure water inlet pipe and a water-bearing structure water outlet pipe, a water inlet device for controlling the water flow of the water-bearing structure water inlet pipe is arranged on the water-bearing structure water inlet pipe, a water outlet device for controlling the water flow of the water-bearing structure water outlet pipe is arranged on the water-bearing structure water outlet pipe, both the water inlet device and the water outlet device are connected with a flow controller for controlling the real-time flow and the overall flow of the water-bearing structure and keeping the water inlet flow and the water outlet flow of the water-bearing structure consistent as far as possible, and the flow controller is connected with a computer. The water-bearing structure conduction water flow control device has the advantages that the device is low in price and high in flow, suction is more than 4 meters, a small amount of silt can pass the device, the real-time flow and the overall flow can be controlled by feedback and displayed in real time, and control is automated.