147results about "Priming pump" patented technology

The invention discloses an energy-saving air conditioner fan circulating water pump and a control method, and relates to the technical field of energy-saving household appliances, and the energy-saving air conditioner fan circulating water pump comprises a motor, a peristaltic pump shell, a peristaltic pump rotor and a centrifugal pump shell. The front end of the motor output shaft is connected with a fan; a plurality of extrusion wheels are arranged on the peripheral side of the peristaltic pump rotor, when the peristaltic pump rotor is in a first state, the extrusion wheels are matched with the peristaltic pump shell to extrude the elastic hose, the peristaltic pump rotor is in transmission connection with the output shaft, and when the peristaltic pump rotor is in a second state, the peristaltic pump rotor is separated from the output shaft; the extrusion wheel is separated from the elastic hose, the centrifugal pump shell is connected to the rear end of the peristaltic pump shell, an impeller is arranged in the centrifugal pump shell and connected to the rear end of the output shaft, the centrifugal pump shell is connected with a first water inlet pipe and a first water outlet pipe, and the first water outlet pipe is communicated with the water inlet end of the elastic hose. According to the centrifugal pump, one motor can be used for driving the fan and the impeller in the centrifugal pump shell, and energy consumption is reduced.

The utility model belongs to the technical field of water supply, and particularly relates to a remote control vacuum pump exhaust device and system, which comprises a vacuum pump, a vacuum pump control box, a main exhaust pipeline and an electromagnetic valve, the electromagnetic valve is arranged on a main exhaust pipeline, the control end of the electromagnetic valve is connected with the vacuum pump control box, a starting button and a stopping button are arranged on the vacuum pump control box and used for inputting a starting signal and a stopping signal of the vacuum pump, and the output end of the vacuum pump control box is connected with the control end of the electromagnetic valve. Remote starting and stopping of the vacuum pump exhaust device can be achieved, and the starting efficiency of the centrifugal pump is greatly improved.

The application discloses a kind of continuous self-bleeding self-suction pumps, it is related to self-suction pump technical field, including main body, the upper portion of the main body is provided with self-suction tank, the top of the main body is equipped with steam jacket heat tracing, the upper end of steam jacket heat tracing is equipped with injection device, the lower end of self-suction tank is provided with sealing device, the middle of sealing device is equipped with pipeline, the bottom of pipeline is equipped with fixing device, the right end of fixing device is provided with ground tank, the upper end of ground tank is equipped with nitrogen pressure exhaust pipeline device.The application is fixed on the upper end of steam jacket heat tracing by outer frame, then connects steam pipe line by the pipe joint of right end, exhausts gas in ground tank to expansion pipe, carries out gas expansion, exhausts the gas after completion of expansion to mixing chamber, makes it mixed jet pump, then is discharged by nozzle, without manual filling pump.Again by the pipeline cavity of through frame inner cavity through connecting pipeline.

This invention discloses a self-priming discharge pump for chemical neutralization tanks, comprising a pump housing, a pump body fixedly connected to the top of the pump housing, an inlet pipe fixedly connected to one side of the pump housing, a deepening pipe fixedly connected to one side of the inlet pipe, an end of the deepening pipe away from the inlet pipe fixedly connected to one side of the pump housing, a speed reduction block fixedly connected to the bottom of the pump housing, several sets of speed reduction through holes opened on both sides of the speed reduction block, a filter tank mounting seat provided on one side of the speed reduction block, the filter tank mounting seat placed inside the pump housing, and an outlet pipe fixedly connected to the end of the pump housing away from the inlet pipe. This self-priming discharge pump for chemical neutralization tanks, through the cooperation of components such as the outlet pipe, filter tank mounting seat, inlet pipe, deepening pipe, and speed reduction block, achieves wastewater speed reduction, thereby improving its service life.

The utility model discloses a self-priming pump with a liquid storage function, which relates to the technical field of self-priming pumps and comprises a mounting base and a self-priming pump body, the self-priming pump body is fixedly connected to the top end of the mounting base, and a liquid storage tank is fixedly connected to the top end of the mounting base. According to the self-priming pump, impurity particles with different sizes can be filtered and blocked through the filtering and blocking mechanism by using the first filter screen and the second filter screen, so that the impurity particles are prevented from entering the self-priming pump body to cause blockage or damage to the self-priming pump body; meanwhile, the first filter screen and the second filter screen are driven to do reciprocating motion through cooperation of elastic telescopic motion of the spring and the movable rod and water flowing influence, attachment of impurity particles is reduced, blockage is reduced, and smoothness is kept; according to the self-priming pump, impurity particles in the liquid storage tank body can be cleaned through the rotary cleaning mechanism by means of the scraping plate and the cleaning brush body, the impurity particles are prevented from staying in the liquid storage tank body, and therefore the situation that the amount of pre-filled liquid is reduced due to the fact that the liquid storage space is occupied is avoided, and normal use of the self-priming pump body is not prone to being affected.

The utility model discloses a protection device for water shortage of a water pump, and relates to the technical field of water pump protection. A water inlet pipe is mounted on one side of the pump body, an alarm mechanism is mounted at one end of the water inlet pipe and comprises a water storage bin connected with the water inlet pipe, a window is mounted on one side of the water storage bin, a liftable water floating part is mounted at the top end of the water storage bin, an alarm is mounted at the top end of the outer side of the water storage bin, and the water floating part is used for triggering the alarm. A water conduit is installed on one side of the water storage bin, and valves are installed on the water inlet pipe and the water conduit. The alarm mechanism is installed on the side close to the water pump, and the alarm and the pressing block used for triggering the alarm are both arranged on the outer side of the water storage bin away from water, so that the synchronism of completion of water pumping and triggering of the water pump protection alarm is ensured, and the service life of the device is prolonged.

An inducer (128) may include a hub (136) having an outer lateral surface (144) extending from a leading end (146) to a trailing end (148), the outer lateral surface (144) having a leading surface section (150) having a first cylindrical shape, an intermediate surface section (154) having a frustoconical shape, and a trailing surface section (152) having a second cylindrical shape. The inducer (128) may include main blades (140) extending circumferentially along a first helical path over the leading surface section (150), the intermediate surface section (154), and the trailing surface section (152), the first helical path having an increasing helix angle. The inducer (128) may additionally include splitter blades (142), each of the splitter blades (142) located circumferentially between two of the main blades (140), respectively.

The utility model discloses an auxiliary horizontal pump upper water measuring tank, which comprises an upper water measuring tank, the top of the upper water measuring tank is provided with a water injection pipeline and an exhaust one-way valve, one end of the water injection pipeline far away from the upper water measuring tank is integrally and fixedly provided with a second connecting flange, and the bottom of the upper water measuring tank is provided with a drainage pipeline and a slag removal pipeline. And an opening and closing valve is installed on the right side of the slag removal pipeline, a first connecting flange is integrally and fixedly installed at the end, away from the upper water measuring tank, of the drainage pipeline, and supporting legs are welded to the outer surface of the upper water measuring tank. According to the utility model, the upper water measuring tank and the drainage pipeline are arranged, the upper water measuring tank is filled with water, and the water enters the drainage pipeline under the action of gravity to be in contact with the water pump, so that a continuous liquid column can be provided for a pump inlet before the pump is started; the problem that the horizontal pump cannot be started up due to large height difference of an inlet pipeline and gas storage is effectively solved, and normal flow can be quickly and reliably established by the pump.

The application discloses a hot water supply device and a water purifying and heating integrated device, and relates to the technical field of water treatment. The hot water supply device comprises a water storage device with a water outlet, a heating element capable of heating water in the water storage device, a water pump, an inlet end of the water pump being communicated with the water outlet, and an exhaust structure on a channel upstream of an impeller of the water pump and downstream of the water outlet, the exhaust structure being capable of communicating the inside of the channel with the atmosphere. The application can solve the problem that when the water storage device discharges hot water through the water pump, the water pump is blocked by air, and the water flow is reduced.

The utility model provides a large-displacement vacuum auxiliary self-priming pump which comprises a buffer box, the buffer box is connected with a vacuum unit and a drainage unit, the drainage unit comprises a water inlet pipe, the water inlet pipe is connected to a water inlet of the buffer box through a first flange, and a water outlet is formed in the side, corresponding to the water inlet, of the buffer box. An n-shaped bent pipe is arranged between the water inlet and the water outlet, one end of the bent pipe is connected with the water inlet, and the other end of the bent pipe is connected with the water outlet. The top of the bent pipe is communicated with a buffer tank, the water outlet is connected with the water inlet end of a centrifugal self-priming pump through a second flange, the water outlet end of the centrifugal self-priming pump is connected with a water storage tank through a third flange, and the top of the water storage tank is connected with a water outlet header pipe. The top of the buffer tank is connected with an exhaust pipe, and the exhaust pipe penetrates out of the top of the buffer tank and is connected with a vacuum unit through an exhaust branch pipe. When the large-displacement vacuum auxiliary self-sucking pump works, the vacuum unit and the drainage unit work cooperatively, so that the drainage efficiency of the drainage unit is improved.

The present application relates to the field of centrifugal pump, concretely is a kind of horizontal self-priming centrifugal pump, including bracing plate, the bracing plate is used to support the support treatment of overall equipment;Water suction mechanism, the water suction mechanism is used to overflow when entering water, handle part water flow;Pressure relief mechanism, the pressure relief mechanism is used to when water pressure in pump is too large, the water flow treatment of discharge;Centrifugal mechanism, the centrifugal mechanism is used to produce rotation to water flow, and make water flow produce centrifugal force and flow out outward;The top of the bracing plate is fixedly connected with pump shell, the top of the pump shell is fixedly connected with water outlet pipe, the horizontal self-priming centrifugal pump, by the movement of half-open impeller towards the inside of water seal component, so that the blade on half-open impeller will be more and more close to the vertical plane where regulation block is located, thus with the rotation of half-open impeller, part centrifugal water flow will impact on regulation block, thereby play the role of reducing the flow and flow rate of water flow from water outlet pipe.

This utility model discloses an inverted drainage pump with improved self-priming performance, comprising a pump cover component, a pump casing component, and a rotor-impeller assembly. The impeller cover of the impeller body component has an impeller suction port at its center, with blades extending into the axial projection position of the impeller suction port, and the blades forming an inclined portion at the axial projection position of the impeller suction port. The rotor chamber of the pump casing component is equipped with an exhaust channel connecting to the outside. When water enters through the inlet of the pump cover component, the air in the rotor chamber of the pump casing component is driven by pressure and discharged to the outside along the exhaust channel. This utility model mainly solves the problem of how to improve the self-priming performance of an inverted drainage pump. When the liquid medium is sucked into the impeller chamber, the air retained in the rotor chamber is driven by pressure and discharged to the outside along the exhaust channel, resulting in a higher negative pressure in the impeller chamber and rotor chamber, thereby improving the self-priming performance of the inverted drainage pump.

The utility model provides a water pump exhaust mechanism which comprises a water pump body, an exhaust port is formed in the water pump body, an exhaust pipeline is connected to the exhaust port, an air pump is arranged at the end, away from the water pump body, of the exhaust pipeline, and a flow guide assembly used for improving the exhaust effect is arranged on the exhaust pipeline. The flow guide assembly comprises a mounting plate fixedly connected to the pipeline, an electric push rod fixedly connected to the mounting plate and a movable plate fixedly connected to the extending end of the electric push rod, and three rotating rods are rotationally connected to the movable plate. According to the water pump exhaust mechanism, deposition blocking is actively avoided through horizontal dynamic adjustment of the air guide fan, the synchronous resistance reduction design of the elastic silica gel blades and belt transmission is combined, the exhaust efficiency is improved, meanwhile, the self-adaptive displacement compensation mechanism of the sliding rod and the movable groove is utilized, and the exhaust efficiency is improved. The problem of overload damage caused by rigid connection of a traditional mechanism is effectively solved.

The utility model relates to the technical field of water pumps, in particular to a pipeline pump body lubricating structure which comprises a pump body main body, an upper cover and an impeller, the pump body main body is provided with a rotating cavity and a liquid inlet channel, a liquid outlet channel is formed in the cavity wall of the rotating cavity, and the impeller is rotationally embedded in the rotating cavity; the upper cover is connected to the pump body and covers a notch of the mounting groove, a driving hole is formed in the upper cover and used for allowing a motor output shaft to penetrate through to drive the impeller to rotate, the upper cover is connected with an abutting ring, the abutting ring abuts against the impeller, a gap exists between the outer wall of the abutting ring and the groove wall of the mounting groove, and a connecting hole is formed in the upper cover and communicates with the two sides of the abutting ring. The impeller is provided with a communicating hole. Through the structural arrangement of the pipeline pump body, heat accumulation generated by dry friction between the motor output shaft and the joint of the impeller and the pump body main body is reduced, the possibility of motor damage is reduced, and the service life of the pipeline pump is prolonged.

The utility model discloses a self-priming centrifugal pump with a single-stage end liquid suction ring, and relates to the technical field of centrifugal pumps, in particular to the self-priming centrifugal pump with the single-stage end liquid suction ring, which can realize self-priming and convey working conditions of gas-containing media. A self-suction impeller is additionally arranged on the back of an impeller, and the self-suction impeller and the impeller are arranged on a pump shaft; the self-suction impeller, the pump cover and the sealing gland jointly form a liquid ring cavity of the centrifugal pump. The sealing gland is connected with the mechanical seal. The self-suction impeller and the mechanical seal are in transmission through friction force. And the self-suction impeller, the mechanical seal and the sealing gland are eccentrically arranged. The self-suction impeller adopts a front bent blade, so that the self-suction performance is improved. According to the technical scheme, the problems that in the prior art, the self-suction performance is poor due to vacuum obtaining and maintaining problems, and gas-containing and dangerous media cannot be pumped are solved.

Vacuum pump as part of a vacuum wastewater system for emptying and flushing toilets and urinals - with a collecting inlet line which is connected to an inlet (2) in a housing (1) of the vacuum pump and is closed inside the housing by a flap valve (12) when the vacuum pump is not in operation, - with a cutting device (4) which is axially arranged and which crushes solid substances in the wastewater, - with an axially arranged screw spindle (5) which, when rotated, forms a water ring (6) necessary for generating the vacuum and draws in the wastewater by means of vacuum, - with an outlet (7) and - with a drive motor (9) for the cutting device (4) and the screw spindle (5), characterized in that the inlet (2) is continued inside the housing (1) as a tubular channel (10) and the outlet opening (11) from the channel (10) can be closed by the flap valve (12), supported by gravity or part of the gravity of the flap (13) of the flap valve (12).

The self-drainage anti-leakage water pump specifically comprises a water pump body, a water outlet pipe is fixedly installed at the upper end of the water pump body, a water inlet pipe is fixedly connected to the left side of the water pump body, and external water pipes are connected to the ends, away from the water pump body, of the water outlet pipe and the water inlet pipe through flanges; protective assemblies are movably mounted at the joints of the water outlet pipe and the water inlet pipe with the external water pipe, and clamping plates are arranged on the two sides of the joints of the water outlet pipe and the water inlet pipe with the external water pipe respectively. Through cooperation of the water pump body, the water outlet pipe, the water inlet pipe, the external water pipe, the protection assembly and the clamping plates, the clamping plates are installed on the two sides of the joint of the pipeline of the water pump body and the external pipeline correspondingly, and the clamping effect of the clamping plates on the two sides on the joint of the pipeline of the water pump body and the external pipeline is achieved; the tightness of the joint of the pipeline of the water pump body and the external pipeline is improved, and water leakage caused by looseness of bolts at the joint of the pipeline of the water pump body and the external pipeline is prevented.

The application relates to a self-priming pump device with self-bleeding, which comprises a water inlet pipe, a sealed water guide tank and a self-priming pump connected in sequence. The sealed water guide tank is internally provided with a water suction and air exhaust pipe, which is a vertically arranged hollow pipe with two closed ends, and a plurality of small water inlet holes are arranged in the lateral surface of the pipe. The self-priming pump comprises a water pump cylinder and a primary guide wheel, and an air exhaust device is arranged outside the primary guide wheel and inside the water pump cylinder. The air exhaust device comprises a base plate, a plurality of air holes are arranged on the surface of the base plate, the air holes are connected with air exhaust and water supplement pipes with different lengths and top openings, and a gap is left between the base plate and the outer periphery of the primary guide wheel as a water passing surface. The self-bleeding self-priming pump device can suck water sources with low liquid levels, automatically exhaust the accumulated air in the sealed water guide tank and the water pump, and automatically change the air exhaust speed according to the amount of the accumulated air, so that the water pump can normally work without being affected by insufficient liquid guiding or air accumulation.

The application relates to a self-suction structure and a water pump, and relates to the technical field of water pumps, which comprises a guide vane and a flow guide, the flow guide is provided with a containing cavity, the guide vane is fixedly installed in the containing cavity, the flow guide is further provided with a separation cavity, the flow guide is further provided with a communication hole, the communication hole is used for connecting the containing cavity and the separation cavity, the containing cavity is located in front of the separation cavity, and an impeller is arranged in the containing cavity and located in front of the guide vane. The application has the advantages of good gas-liquid separation effect and good self-suction effect.

The present application belongs to the field of emergency, disclose a kind of multifunctional land oil spill emergency system, including compartment, the oil collection equipment is built-in in the compartment, oil collection device, the hydraulic power unit is also built-in in the compartment, self-priming pump;The oil collection equipment includes carousel oil skimmer;The carousel oil skimmer includes two buoyancy tanks oppositely arranged, a pair of first rotating shafts, a pair of second rotating shafts are arranged between two buoyancy tanks, oil slick transfer tank;The first disc and the second disc staggered arrangement and partially coincide in axial direction;The bristle and oil felt cloth contact;The system is equipped with improved carousel oil skimmer, cooperate other oil collection equipment and hydraulic power unit, self-priming pump realizes the purpose of power self-sufficient, efficient, all-round oil cleaning.

The invention relates to the technical field of pump operation control, and provides an energy-saving self-priming pump operation control method and system.The method comprises the steps that when it is judged that a liquid column is established, sending of an acceleration pulse instruction to a motor is stopped immediately, a preset smooth deceleration curve is switched through limited pulses, and the rotating speed of the motor is reduced to the preset low-speed operation rotating speed; meanwhile, reverse braking torque is applied; if it is judged that the liquid column is established, but the pressure first-order derivative is lower than a preset threshold value, or the current high-frequency variance is not displayed to be obviously reduced, entering a detection back-off mode, executing a preset low-amplitude perturbation pulse, and prolonging a pause observation period; and if the establishment of the liquid column cannot be confirmed after the preset number of micro-disturbances, returning to the ultra-smooth starting strategy. The method has the effect of improving the quality and stability of operation control of the self-priming pump.

The utility model relates to the technical field of centrifugal pumps, in particular to an automatic control system for starting exhaust of a centrifugal pump, which comprises a motor, a centrifugal pump body, an exhaust pipe and a control system body, an exhaust port is arranged at the top of the centrifugal pump body, an electrically operated valve is mounted on the exhaust pipe, and a flowmeter is mounted on the exhaust pipe. The control system body receives instrument monitoring signals and transmission equipment driving signals through cables, the exhaust port is connected with the exhaust pipe, the electric valve is located above the flowmeter, the control system body receives the instrument monitoring signals and the transmission equipment driving signals through the cables, and the liquid level meter, the flowmeter, the electric valve and the motor are all connected with the control system body. The control system body completes automatic exhaust while the centrifugal pump body is started, manual field cooperation is not needed, the labor intensity is reduced, post configuration is optimized, normal starting of the centrifugal pump body can be guaranteed, the failure rate of the centrifugal pump is reduced, and the production intelligence level and the working efficiency are improved.

The application relates to the technical field of starting motors, and particularly discloses a fan heat dissipation type starting motor for a centrifugal pump, which comprises a base and a machine shell fixedly connected to the base, a strip-shaped air inlet is arranged on the machine shell and penetrates through the inside and outside of the machine shell, a filter screen for shielding dust is arranged in the strip-shaped air inlet, a rotor is arranged in the machine shell, and a transmission shaft penetrates through the rotor coaxially. At the beginning of starting, the fan blade cannot rotate at high speed, so that the starting response slow degree and the starting current size of the centrifugal pump can be reduced, the additional energy consumption loss of the motor at the initial stage of starting can be reduced, the windward area of the fan blade at the initial stage of starting of the starting motor is small, so that the rotating resistance of the fan blade can be reduced, the starting response slow degree and the starting current size of the centrifugal pump can be further reduced, and the additional energy consumption loss of the motor at the initial stage of starting can be further reduced.

The anti-cavitation centrifugal pump set comprises a pump body, the pump body is connected with a fluid inlet pipe and a fluid outlet pipe, the fluid inlet pipe is provided with an axial liquid inlet channel, the fluid inlet pipe is provided with an air ejector, and the air ejector is communicated with the axial liquid inlet channel; the fluid outlet pipe is provided with a radial liquid outlet channel, an impeller is arranged between the axial liquid inlet channel and the radial liquid outlet channel, the attack angle of a blade inlet of the impeller is 5-15 degrees, the impeller is connected with a power mechanism, an inducer is arranged in the axial liquid inlet channel, and the inducer is connected with the power mechanism. According to the self-priming centrifugal pump, the inducer and the air ejector are additionally arranged, and the attack angle of a blade inlet of the impeller is adjusted, so that a common self-priming centrifugal pump has high cavitation resistance and rapid self-priming capacity, has wide applicability under the working conditions of high altitude, low air pressure, plain, suction depth and pressurization, has wide application space and use value, and is suitable for popularization and application. The device is particularly suitable for conveying light fuel oil, water or media with similar properties.

The utility model provides a screw vacuum pump drainage unit which comprises a vacuum device and a drainage device, the vacuum device comprises a screw vacuum pump, one end of the top of the screw vacuum pump is provided with a water inlet, the other end of the top of the screw vacuum pump is provided with a drainage port, the water inlet is connected with a first water inlet pipe, and the first water inlet pipe is connected with a vacuum buffer tank. A first water outlet is formed in the top of the vacuum buffer tank, the first water inlet pipe is connected with the first water outlet, one side of the lower portion of the vacuum buffer tank is connected with a drainage device through a buffer pipe, the drainage device comprises a centrifugal self-priming pump, the buffer pipe is connected with the water inlet end of the centrifugal self-priming pump, and the water outlet end of the centrifugal self-priming pump is connected with a drainage tank. The top of the drainage tank is connected with a main drainage pipe, and a drainage port of the screw vacuum pump is connected with the main drainage pipe through a first circulating pipe. When the drainage unit of the screw vacuum pump works, the drainage efficiency can be greatly improved.

A submerged water feeding pump with a shutdown water retention function comprises a motor, a base, a pump outer pipe, an inner pipe, a pump shaft, a flow guide pipe, a guide vane and an impeller, and is characterized in that a sealing seat is arranged at an outlet of the guide vane, and a valve clack is sleeved on the inner pipe corresponding to the outlet of the guide vane; the outer wall of the inner pipe or the inner wall of the flow guide pipe is provided with a limiting piece used for limiting the valve clack to move upwards to the upper limit position after the valve clack is opened so as to ensure the overflowing area. The contact portion of the lower end face of the valve clack and the upper end face of the sealing seat is a sealing contact face. When the water feeding pump runs, liquid passing through the flow channel between the guide vane and the impeller exerts pressure upwards to enable the valve clack to move upwards and be opened, the liquid flows out through the flow channel between the valve clack and the flow guide pipe, and when the water feeding pump stops, the valve clack falls reversely to enable the sealing face between the valve clack and the sealing seat to be attached, and the liquid in the pump cavity is stored. In addition, the quick starting device is simple in structure, easy to process, reliable in sealing and long in service life.

The invention relates to a pumping and degassing system configured for use in a liquid circulating system, comprising a circulating pump (4) having a pump inlet in communication with a first system interface (7) and a pump outlet in communication with a second system interface (13), wherein the first system interface (7) and the second system interface (13) are configured for connection with a hydraulic circuit (5), and comprising a degassing device (8; 8') having a degassing inlet (9; 9') and a degassing outlet (11; 11'), wherein the degassing outlet (11; 11') is connected to the pump inlet.

Intake and gas separators for a downhole rotary pump define a fluid flowpath and comprise two or more intake stages arranged in parallel, and two or more of the intake stages each have one or more impellers and one or more inlet holes.

This invention discloses a self-priming pump device in the field of self-priming pump technology, including a water inlet device, a self-priming device, and a water outlet device. The water inlet device consists of an inlet pipe and a filter device installed on the pipe, with a three-way connector installed at the end of the inlet pipe. The self-priming device includes an impeller, a first housing, a second housing, and a motor. The first housing has a first opening and a second opening on its side. The impeller is installed inside the second housing, and the impeller shaft of the motor is installed inside the first housing. The first housing and the second housing are eccentrically arranged. A pressure difference is formed by compressed air, causing the impeller to rotate. Self-priming is achieved through centrifugal force and thrust. This invention designs the first housing and the second housing to be eccentrically arranged, with the bearing seats and bearing holes offset from the center, and the length and width of each fan of the impeller are different. This allows it to generate stronger centrifugal force and thrust on liquids or gases during operation, directly achieving water pumping, which can be achieved simply by driving the motor.

The present invention relates to a method of starting a submersible pump used for transferring liquefied gas. The method includes starting a submersible pump (1A) disposed in a suction container (2A) of a pump apparatus (100A) to deliver liquefied gas to a suction container (2B) of a pump apparatus (100B) through a flow-path switching device (5A) in the suction container (2A), passing the liquefied gas through a flow-path switching device (5B) in the suction container (2B) while the liquefied gas bypasses a submersible pump (1B) disposed in the suction container (2B), and then starting the submersible pump (1B).