Displacement pump installation and retention

By designing a displacement pump that includes a pump body, piston, and pump mounting components, and utilizing a combination of static connections and dynamic interfaces, the problem of uneven spray patterns in airless spraying systems was solved, thus improving spraying quality.

CN122422657APending Publication Date: 2026-07-17GRACO MINNESTOA INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GRACO MINNESTOA INC
Filing Date
2024-12-11
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing airless spraying systems, the movement of the piston or diaphragm causes uneven spray patterns, especially at the start and stop of spraying, and may produce uneven spray patterns.

Method used

A displacement pump is employed, comprising a pump body, a piston, and a pump mounting component. The pump body is supported by a static connection, and the reciprocating motion of the piston is driven by a dynamic interface. The ring lock of the pump mounting component and the support component form a stable static interface to prevent loosening caused by vibration.

Benefits of technology

It achieves uniformity in the sprayed pattern, reduces unevenness during the spraying process, and improves the spraying quality.

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Abstract

一种位移泵，包括泵主体以及至少部分地设置在泵主体中的活塞，该活塞配置成在轴上往复运动以泵送流体。泵安装件设置在泵主体上，并配置成在泵安装在泵送组件中时形成静态连接以支撑泵主体。泵安装件包括相对于泵主体可移动的下环。泵安装件还包括支撑泵主体的安装板。
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