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Double-accuracy filter

A filter, double-precision technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of system failure, large filter volume, insufficient oil supply, etc. Simple structure and small footprint

Inactive Publication Date: 2018-05-22
XIAN AERO ENGINE CONTROLS
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Problems solved by technology

[0004] Purpose of the present invention: In order to solve the problems in the existing hydraulic system that the filter is large in size, distributed in multiple places, and insufficient oil supply leads to system failure when clogged, the present invention provides a double-precision filter. The core element consists of a coarse filter element, a fine filter Composed of a filter element and a one-way valve, it can reduce the number of filters in the system, reduce the quality of the filter and occupy space, and automatically open the bypass function when the filter is blocked to ensure that the oil supply remains normal

Method used

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  • Double-accuracy filter

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Embodiment Construction

[0015] The present invention is a double-precision filter with a bypass function, including a housing 1, a coarse filter element 2, a coarse filter element pressure spring 3, a fine filter element 4, and a one-way valve 5;

[0016] The casing is provided with an oil inlet 6, a filter cavity 7, a first oil outlet channel 8, a second oil outlet channel 9 and a third oil outlet channel 10;

[0017] The coarse filter element and the compression spring of the coarse filter element are arranged in the filter cavity, and the compression spring of the coarse filter element elastically presses the coarse filter element on the oil inlet, so that the oil enters the filter cavity after passing through the coarse filter element;

[0018] The first oil outlet passage, the second oil outlet passage and the third oil outlet passage are all in communication with the filter chamber for leading the oil out of the filter chamber; the one-way valve is arranged in the third oil outlet passage, when ...

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Abstract

The invention relates to a double-accuracy filter. The existing filters generally comprise a single-accuracy filter element and do not have a bypass function separately. The filter disclosed by the invention is mainly composed of a low-accuracy coarse filter element, a high-accuracy fine filter element, a check valve and the like, wherein the coarse filter element is embedded into the fine filterelement.

Description

technical field [0001] The invention relates to a double-precision filter, which belongs to the technical field of structural design of hydraulic components. Background technique [0002] At present, due to the need of fluid pollution control, the general hydraulic system often needs to install multiple filters or filter elements according to the requirements of different filtration accuracy, which causes the filters or filter elements to occupy a large space in the system, resulting in larger system volume and increased weight. , which conflict with the space and weight constraints required by the system, especially in the aerospace sector. [0003] In addition, the general filter design has insufficient consideration in terms of safety. When the filter is blocked, the supply of the filtered oil is insufficient or even interrupted, resulting in abnormal operation of downstream hydraulic components and system failure. Contents of the invention [0004] Purpose of the pres...

Claims

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Application Information

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IPC IPC(8): F15B21/04
CPCF15B21/041
Inventor 吉利科王辉刘益欣柳飞
Owner XIAN AERO ENGINE CONTROLS
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