一种防止齿圈胶合的内啮合齿轮泵

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By installing a protective structure in the oil inlet pipe of the internal gear pump and using a mesh plate to filter impurities, the clogging and wear problems caused by the lack of a filtration structure in the internal gear pump are solved, thus achieving efficient operation and durability of the equipment.

CN224515385UActive Publication Date: 2026-07-17NANTONG ZHONGKE ZHIQUAN TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: NANTONG ZHONGKE ZHIQUAN TECHNOLOGY CO LTD
Filing Date: 2025-09-17
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

In the prior art, internal gear pumps, when used to transport high-viscosity media, suffer from blockage or wear due to the lack of a filtration structure, which increases losses.

Method used

An internal gear pump designed to prevent gear ring seizure is proposed. A protective structure is installed in the oil inlet pipe, including a vertical cylinder, a straight plate, a grooved plate, and a mesh plate. The mesh plate filters impurities, preventing them from entering the internal gear pump and avoiding gear damage and seizure.

Benefits of technology

It effectively prevents clogging and wear of internal gear pumps, reduces operating losses, and improves equipment reliability and service life.

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Abstract

本实用新型涉及内啮合齿轮泵技术领域，尤其是一种防止齿圈胶合的内啮合齿轮泵，包括曲板，所述曲板的后端面固接有内啮合齿轮泵，所述内啮合齿轮泵的右侧连通有进油管，所述进油管的顶部连接有防护结构，所述内啮合齿轮泵的输出轴连接有调整结构，通过防护结构中网板由上而下插入竖筒和进油管中，接着螺栓螺纹穿过槽板与竖筒内壁圆口螺纹连接，完成直板和网板的固定，当液体通过进油管时会受到网板进行过滤，使液体中的杂质进行分离，防止杂质进入内啮合齿轮泵中，避免内啮合齿轮泵内部齿轮损坏后发生齿圈胶合现象，防止内啮合齿轮泵引发堵塞或磨损，降低了内啮合齿轮泵工作中的损耗。

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Claims

1. An internal meshing gear pump to prevent the galling of the gear ring, comprising a curved plate (1), characterized in that: An internal gear pump (4) is fixedly connected to the rear end face of the curved plate (1). An oil inlet pipe (5) is connected to the right side of the internal gear pump (4). A protective structure (2) is connected to the top of the oil inlet pipe (5). An adjustment structure (3) is connected to the output shaft of the internal gear pump (4). The protective structure (2) includes a vertical cylinder (201) and a straight plate (202). The bottom of the vertical cylinder (201) is connected to the top of the oil inlet pipe (5). The inner wall of the vertical cylinder (201) is in contact with the outer wall of the straight plate (202). The top front and rear sides of the straight plate (202) are respectively fixed with grooved plates (203), and the bottom of the straight plate (202) is fixed with a mesh plate (204).

2. The internal gear pump for preventing gear ring seizure according to claim 1, characterized in that: The lower part of the outer wall of the mesh plate (204) is in contact with the inner wall of the oil inlet pipe (5).

3. The anti-stiction internal gear pump of claim 2, wherein: The outer wall of the groove plate (203) is in contact with the inner wall of the vertical cylinder (201).

4. The anti-stiction internal gear pump of claim 3, wherein: The top of the internal gear pump (4) is connected to an oil outlet pipe (6).

5. The anti-stiction internal gear pump of claim 4, wherein: The adjustment structure (3) includes a straight rod (301) and a protrusion (302). The rear end face of the straight rod (301) is fixedly connected to the output shaft of the internal gear pump (4). The upper and lower sides of the straight rod (301) are respectively fixedly connected to the inner sides of the two protrusions (302). Sleeves (303) are inserted into the outer walls of both the straight rod (301) and the protrusions (302).