6results about How to "Improve self-priming performance" patented technology

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 embodiment of the invention provides a fluorine pump restarting method, a control device, a double-circulation refrigerating system and a storage medium. The fluorine pump restarting method can be used for a double-circulation refrigerating system and is characterized by comprising the steps that after an instruction that a fluorine pump needs to be restarted during flow cutoff is received, a condensate fan is controlled to operate at a first preset rotating speed, and the fluorine pump is closed; controlling the condensate fan to run at a second preset rotating speed and controlling the fluorine pump to start at a third preset rotating speed on the basis that the running duration of the condensate fan at the first preset rotating speed reaches a first preset duration; wherein the second preset rotating speed is smaller than the first preset rotating speed. According to the fluorine pump restarting method, the fluorine pump is started at high frequency after short-time cold blowing, rapid recovery of the fluorine pump after cutoff is achieved, and the fluorine pump restarting method has the advantages of being wide in application temperature, short in consumed time, free of the help of a compressor and high in success rate.

The utility model discloses a novel scrubber ground washing water absorption device which is characterized in that a first high-pressure water gun is communicated with a hollow shaft, and the hollow shaft, a rotating rod and a spray head are communicated, so that when high-pressure water flow is sprayed out from the spray head to the ground, the spray head and the rotating rod are pushed to rotate by taking the hollow shaft as a circle center; through the sealing effect of a sealing brush and a water absorption scraper, air flow in a shell of the floor washing disc rotates, meanwhile, a negative pressure effect is generated, and therefore dirty water generated during washing is discharged outwards from the water absorption scraper through a blow-off pipe, and a second high-pressure water gun is communicated with a first high-pressure water gun; by arranging the second high-pressure water gun, a part of high-pressure water flow can be sprayed into the blow-off pipe through the second high-pressure water gun, so that an assisting effect is exerted on sewage discharged from the blow-off pipe, the sewage discharging effect is improved, the self-suction effect in the ground washing disc shell is relatively improved, the sewage is effectively prevented from polluting a clean surface, the use is convenient, and meanwhile, the workload is reduced.

The invention provides a double-acting curve plunger pump supported by balls, the plunger pump comprises a pump shell assembly and a pump core assembly, the pump core assembly is coaxially arranged in the pump shell assembly along the axis, the pump core assembly comprises a rotor structure and a stator structure, the pump shell assembly is matched with the pump core assembly to achieve flow distribution on the inner side and the outer side of the plunger pump. According to the axial plunger pump, the so-called ceiling effect formed by increasing the rotating speed of a traditional axial plunger pump can be broken through, and the power density is increased.

The invention provides a centrifugal multiphase multiphase pump which comprises a shell and an impeller, the shell is provided with a pump cavity for installing the impeller, the pump cavity is divided into a front cavity and a rear cavity by a rear cover plate of the impeller, the front cavity is a space, close to an inlet, in the pump cavity, and the rear cavity is a space, close to a driving end, in the pump cavity; the rear cover plate extends into the rear cavity, and part of blades in the impeller extend in the axial direction. A cylindrical wall surface is formed between the position of the original rear cover plate and the extended rear cover plate on the outer side of the hub of the impeller, and a cavity formed by the cylindrical wall surface and part of the axially extending blades enables a conveying medium to form through flow and circulating flow, so that the conveying efficiency of the gas-liquid two-phase medium is improved. The pump can be used for pumping liquid with a solid and gas mixture, the flow characteristic of the liquid is effectively improved through the impeller structure of the pump, and the transportation efficiency of the liquid with the gas mixture is remarkably improved.

The utility model discloses a kind of gas-liquid mixed transmission synchronous self-priming pump structure, belong to self-priming pump technical field, comprising: centrifugal pump, its front end is provided with siphon tank, several steady flow baffle are provided in the siphon tank, exhaust port and water filling port are provided on the siphon tank, the siphon tank bottom is provided with drainage tube, liquid discharge pipe and liquid delivery pipe, the liquid delivery pipe is connected in the centrifugal pump water inlet;And gas-liquid separation chamber, it is connected at the centrifugal pump outlet.The utility model is by being provided with siphon tank, so that every time before starting does not need special water diversion operation, and also can achieve pump and simultaneously realize to send medium, ordinary self-priming pump after starting pump can only empty air and not self-priming time of water.