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CN-116892524-B - Submersible electric pump with water-cooling self-circulation cooling function

CN116892524BCN 116892524 BCN116892524 BCN 116892524BCN-116892524-B

Abstract

The invention discloses a submersible electric pump with water cooling and self-circulation cooling, which comprises a motor assembly and a water pump assembly, wherein the motor assembly comprises a motor cavity, a water inlet channel and a backflow channel are arranged between the water pump assembly and the motor cavity, the water pump assembly guides cooling water into the motor cavity through the water inlet channel and finally discharges the cooling water out of the motor cavity through a stator and a rotor, a sand ejector is arranged in the motor cavity and is arranged at the lower end of the motor cavity, a first sand discharge port is arranged at the bottom of the motor cavity, the sand ejector is provided with a conical sand discharge hopper, and a second sand discharge port is arranged at the lower end of the conical sand discharge hopper. The submersible electric pump provided by the invention can realize water-cooling self-circulation cooling, has a good cooling effect, can realize automatic sand discharge, protects a motor component and has long service life.

Inventors

  • ZHANG YAN

Assignees

  • 沃嘉股份有限公司

Dates

Publication Date
20260508
Application Date
20230712

Claims (6)

  1. 1. The submersible electric pump with the water-cooling self-circulation cooling function is characterized in that the submersible electric pump body comprises a motor assembly and a water pump assembly, the motor assembly comprises a motor chamber (11), A water inlet channel (3) and a backflow channel (14) are arranged between the water pump assembly and the motor chamber (11), the water pump assembly guides cooling water into the motor chamber (11) through the water inlet channel (3), and finally discharges the cooling water out of the motor chamber (11) from the backflow channel (14) through a stator (12) and a rotor (13); The motor cavity (11) is internally provided with a sand discharge device (5), the sand discharge device (5) is arranged at the lower end of the motor cavity (11), the bottom of the motor cavity (11) is provided with a first sand discharge port (111), the sand discharge device (5) is provided with a conical sand discharge hopper (51), and the lower end of the conical sand discharge hopper (51) is provided with a second sand discharge port (52); a waterproof rotator (6) is arranged at the inner bottom of the motor cavity (11); A filter (7) is arranged at the upper part in the motor chamber (11).
  2. 2. Submersible electric pump according to claim 1, characterized in that the water pump assembly comprises an impeller pump chamber (21), a water inlet channel (3) being provided between the impeller pump chamber (21) and the upper part of the motor chamber (11).
  3. 3. Submersible electric pump according to claim 2, characterized in that the water intake channel (3) is a water intake conduit arranged between the bottom of the impeller pump chamber (21) and the upper part of the motor chamber (11).
  4. 4. Submersible electric pump according to claim 1, characterized in that the return channel (14) is arranged in the motor shaft (15), the lower end of the motor shaft (15) being provided with a water inlet (141) and the upper end thereof being provided with a water outlet (142).
  5. 5. Submersible electric pump according to claim 1, characterized in that the waterproof rotator (6) comprises a torus (61) and a plurality of notches (62) uniformly arranged on the circumference of the torus (61), the notches (62) being arc-shaped notches.
  6. 6. Submersible electric pump according to claim 1, characterized in that the filter (7) is a coarse sand filter, which is arranged below the upper guide seat (16) of the motor chamber (11).

Description

Submersible electric pump with water-cooling self-circulation cooling function Technical Field The invention belongs to the technical field of automatic cooling of submersible pumps, and particularly relates to a submersible pump with water-cooling self-circulation cooling. Background At present, the submersible electric pump is cooled by oil cooling or water cooling. The oil cooling is relatively general in cooling effect. As the working time increases, the mechanical tightness of the submersible pump decreases until it is damaged, resulting in the outflow of cooling oil. Under the condition, the submersible motor is damaged by short circuit, well water pollution is caused, and huge economic loss is caused when drinking water cannot be drunk safely. The water cooling is relatively poor in cooling effect, is suitable for a water pump with smaller power, and has no capability on a high-power submersible motor with high heat dissipation requirement. At present, a water cooling structure belongs to a closed type, and water in a motor can be vaporized and evaporated at high temperature generated during the operation of the motor, so that the motor is finally damaged. The patent of the patent No. CN114744816A is a volute type water pump motor shell cooled by wind power, which realizes circulation by wind power, but cannot be applied to cooling of a submersible electric pump. Such as the "water pump" of CN104767325B, which can realize self-circulation water cooling, but simply cool the rotor shaft, the cooling effect is very limited. In conclusion, the submersible electric pump in the prior art has poor cooling effect, the motor is easy to damage, the service life is short, and the economical efficiency is poor. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a submersible electric pump with water-cooling self-circulation cooling function. According to one aspect of the present invention, there is provided a submersible electric pump with water-cooled self-circulation cooling, wherein the submersible electric pump body comprises a motor assembly and a water pump assembly, the motor assembly comprising a motor chamber 11; A water inlet channel 3 and a return channel 14 are arranged between the water pump assembly and the motor chamber 11, the water pump assembly guides cooling water into the motor chamber 11 through the water inlet channel 3, and finally discharges the cooling water out of the motor chamber 11 from the return channel 14 through a stator 12 and a rotor 13; The motor cavity 11 is internally provided with a sand discharge device 5, the sand discharge device 5 is arranged at the lower end of the motor cavity 11, the bottom of the motor cavity 11 is provided with a first sand discharge opening 111, the sand discharge device 5 is provided with a conical sand discharge hopper 51, and the lower end of the conical sand discharge hopper 51 is provided with a second sand discharge opening 52. According to one embodiment of the invention, the water pump assembly comprises an impeller pump chamber 21, and a water inlet channel 3 is arranged between the impeller pump chamber 21 and the upper part of the motor chamber 11. According to another embodiment of the invention, the water inlet channel 3 is a water inlet conduit arranged between the bottom of the impeller pump chamber 21 and the upper part of the motor chamber 11. According to a further embodiment of the present invention, the return channel 14 is disposed in the motor shaft 15, and the motor shaft 15 is provided with a water inlet 141 at a lower end and a water outlet 142 at an upper end. According to a further embodiment of the invention, a watertight rotator 6 is provided in the bottom of the motor chamber 11. According to another embodiment of the present invention, the waterproof rotator 6 includes a torus 61 and a plurality of notches 62 uniformly arranged on the circumference of the torus 61, wherein the notches 62 are arc-shaped notches. According to a further embodiment of the invention, a filter 7 is provided in the upper part of the interior of the motor chamber 11. According to a further embodiment of the invention, the filter 7 is a coarse sand filter, which is arranged below the upper guide 16 of the motor chamber 11. The submersible electric pump with the water-cooling self-circulation cooling function can realize the water-cooling self-circulation cooling function, has a good cooling effect, does not need to relatively greatly change the original structure, is convenient to reform and produce, saves cost, is easy to popularize, can realize automatic sand discharge, protects a motor assembly, and has low cost and long service life. Drawings Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which: FIG. 1 is a schematic diagram of a