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Low-pulse compound gear pump

A compound gear and meshing gear technology, applied in pumps, rotary piston/oscillating piston pump components, pump components, etc., can solve problems such as large flow pulsation, large system pressure pulsation, and limiting the application range of external meshing gear pumps. , to achieve the effect of small pressure pulsation, high working pressure and simple structure

Inactive Publication Date: 2015-04-29
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Among all kinds of hydraulic pumps, external gear pumps are widely used for their simple structure, high working efficiency and stable operation. Compared with other pumps, external gear pumps have large flow pulsations, which lead to large system pressure pulsations. This reason limits The scope of application of external gear pumps

Method used

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Examples

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Embodiment Construction

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0024] Such as figure 1 , figure 2 with Picture 8 As shown, a low-pulsation compound gear pump includes a pump body 10, which is connected with a front-end mounting plate 1 and a rear-end cover plate 2 through connecting bolts 9, and the pump body 10 is equipped with an active A shaft 14 and a driven shaft 19, the driving shaft 14 is equipped with a first gear 5 and a third gear 16 through a flat key, and the driven shaft 19 is equipped with a second gear 6 and a fourth gear 17 through a flat key; A gear 5 and a second gear 6 mesh with each other to form a first meshing gear pair. The third gear 16 and the fourth gear 17 mesh with each other to form a second meshing gear pair. A front terminal board 20, a rear terminal board 3, and a partition 11 are respectively installed in the middle. The front terminal board 20 and the rear terminal boar...

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PUM

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Abstract

The invention relates to a low-pulse compound gear pump. The low-pulse compound gear pump comprises a pump body, wherein the pump body is connected with a front end mounting plate and a rear end cover plate by virtue of connection bolts; the pump body is internally provided with a driving shaft and a driven shaft; a first gear and a third gear are mounted on the driving shaft by virtue of a flat key; a second gear and a fourth gear are mounted on the driven shaft by virtue of the flat key; the first gear and the second gear are meshed with each other to form a first meshed gear pair; the third gear and the fourth gear are meshed with each other to form a second meshed gear pair; a front terminal plate, a rear terminal plate and a partition plate are respectively mounted on the front end, the rear end and the middle part of the two pairs of meshed gear pairs; sliding bearings are mounted on the front terminal plate, the partition plate and the rear terminal plate; a sliding bearing is arranged on the front end mounting plate; the driving shaft stretches out of the pump body and is connected with an external motor by virtue of the flat key. The low-pulse compound gear pump has the characteristics of simple structure, insensitivity to the oil pollution, high working pressure and low pressure pulse of an oil outlet.

Description

Technical field [0001] The invention relates to a low-pulsation compound gear pump. Background technique [0002] Among all kinds of hydraulic pumps, external gear pumps are widely used because of their simple structure, high working efficiency and stable operation. Compared with other pumps, external gear pumps have large flow pulsations, resulting in large system pressure pulsations. This is a limitation. The application range of external gear pumps is described. The existing external gear pump has only a pair of gears that mesh with each other. The gears are involute gears. When the gears rotate at a constant speed, the oil discharge port will produce flow peaks and troughs with a stable and alternating pattern. According to this feature, the present invention In a pump body, two pairs of gears are designed to mesh with each other, and the two pairs of gears are separated by a partition plate, so that the flow peaks of one pair of gears and the troughs of the other pair of ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/18F04C15/00
Inventor 张永祥金健陈珊孙捷杰朱侃
Owner SHANGHAI UNIV
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