Submersible pump for downflow well
By employing a bottom water inlet structure and a dual mechanical seal design, combined with automatic control and stable support, the clogging and sealing problems of submersible pumps for wells have been solved, enabling efficient and reliable deep well water extraction.
CN122407569APending Publication Date: 2026-07-17ZHEJIANG BAUHINIA PUMP IND CO LTD
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Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG BAUHINIA PUMP IND CO LTD
- Filing Date
- 2026-06-12
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing submersible pumps for wells are prone to clogging at the inlet, resulting in poor sealing. They are also unstable in deep well environments and are easily damaged by mud and water pressure.
Method used
It adopts a bottom water inlet structure, combined with an anti-clogging filter cover, filter screen and detachable sediment collection tank for dual filtration, equipped with a double mechanical seal structure, cable float switch for automatic control, and motor shaft supported by double bearing seats and rubber bushing.
Benefits of technology
It significantly prevents flow channel blockage, improves water intake efficiency and sealing reliability, extends equipment service life, reduces maintenance costs, and adapts to complex working conditions in deep wells.
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Smart Images
Figure CN122407569A_ABST
Abstract
The application discloses a down water inlet type well submersible pump and belongs to the technical field of pump bodies, which comprises a pump body unit and a motor assembly, the motor assembly is arranged in the pump body unit, the motor assembly is used for driving the pump body unit to work, a sealing structure is arranged between the motor assembly and the pump body unit, a water inlet assembly is installed at the bottom of the pump body unit, and a water outlet structure is installed at the top of the pump body unit; the water outlet assembly comprises a water inlet seat and a blockage prevention filter cover, the water inlet seat is screw-connected and installed at the bottom of the pump body unit, the blockage prevention filter cover is installed at the bottom of the water inlet seat, a plurality of groups of filter holes are uniformly distributed on the surface of the blockage prevention filter cover, a filter screen is arranged between the water inlet seat and the blockage prevention filter cover, and a sludge collecting groove is detachably installed at the bottom of the blockage prevention filter cover; a cable is installed on the water outlet structure through a pressing plate, and a float ball switch is arranged on the cable, and the down water inlet type well submersible pump has the advantages of good blockage prevention effect and high water inlet efficiency.
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