Impeller assembly device for a pump

By using a heated and expanded impeller with a clearance fit to the pump shaft, combined with an automated assembly device, the problems of low efficiency and damage in traditional assembly are solved, achieving efficient, precise assembly and reliable connection of the copper impeller.

CN224373323UActive Publication Date: 2026-06-19ZHEJIANG LESEN ELECTRICAL MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG LESEN ELECTRICAL MASCH CO LTD
Filing Date
2025-06-19
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional impeller and pump shaft assembly is inefficient and prone to impeller damage, especially copper impellers which are easily deformed and scratched during assembly.

Method used

The method of heating expansion utilizes the thermal expansion and contraction properties of copper. The impeller is expanded to form a clearance fit with the pump shaft by heating the guide column and oven assembly. Automatic assembly is achieved by using the suction head and drive cylinder, and precision assembly is ensured by combining the gantry and positioning sensor.

Benefits of technology

It achieves efficient and precise assembly of copper impellers, avoids damage caused by traditional cold pressing assembly, improves assembly efficiency and connection reliability, and is suitable for mass production.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224373323U_ABST
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Abstract

The utility model provides a kind of impeller assembly device for pump, belong to the field of automation equipment.It solves the problem of existing pump and impeller installation.The impeller assembly device for pump, including control system, pedestal, assembly line, multiple positioning base, heating mechanism and assembly mechanism, heating mechanism includes oven assembly, multiple heating guide column, material support and drive unit, assembly mechanism includes truss, suction head and drive cylinder, multiple heating guide column is arranged in oven assembly inside with interval, adjacent heating guide column forms the feeding station for impeller stacking placement between, feeding station is equipped with positioning shaft, drive cylinder is installed on truss by movable support seat, its cylinder rod penetrates support seat and is connected suction head, cylinder rod end is equipped with auxiliary spring, the both ends of this auxiliary spring are respectively abutted on suction head terminal end and support seat end part.The utility model has the efficiency of high-efficiency precision assembly.
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