A device for preventing falling objects from a long-shaft deep well pump.

By designing a segmented cylindrical cover unit, the problem of objects falling into the long-shaft deep well pump during installation was solved, achieving high strength, good sealing performance, and easy disassembly, thus improving installation efficiency and equipment reliability.

CN224432875UActive Publication Date: 2026-06-30THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
Filing Date
2025-08-28
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

During the installation of long-shaft deep well pumps, objects can easily fall into the pump body, causing damage to the impeller and the sealing structure. Existing shielding devices are not strong enough, have poor fit, and are inconvenient to disassemble.

Method used

It adopts a segmented cylindrical cover unit, made of aluminum alloy, with an internal central hole and fixed flange. It is fixed to the flange face of the water supply pipe by bolts, and the inner lining ring provides a flexible seal. The connection method is a hinge or quick lock, which can realize quick installation and disassembly.

Benefits of technology

It improves the strength and sealing of the device, simplifies the installation process, reduces costs, extends service life, and ensures the reliability and safety of long-shaft deep well pumps.

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Abstract

This utility model discloses a device for preventing falling objects from a long-shaft deep well pump, comprising two symmetrically arranged cover plate units. Each cover plate unit is a segmented cylindrical structure that can be detachably joined together. The top of each cylindrical structure has a central hole, and the bottom has an outwardly extending fixing flange. The fixing flange has at least two symmetrically distributed bolt holes. This device uses aluminum alloy and has a simple structure. Compared with traditional falling object prevention devices, it has higher strength, better sealing, a simpler installation process, and a significantly longer service life.
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