Stacked filter

A filter and superimposed technology, applied in the hydraulic field, can solve the problems of low filtration accuracy and insufficient filtration reliability, so as to achieve the effect of ensuring the filtering effect, good filtering effect and reducing oil pollution

Inactive Publication Date: 2017-06-06
北京机床所精密机电有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a stacked filter, which can be stacked and installed between the valve table and the plate hydraulic valve, which can solve the problem of low filtering accuracy and insufficient filtering reliability in the main oil circuit Under this condition, the

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[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Please refer to Figure 1 to Figure 8 , figure 1 It is a schematic front view of a specific implementation of a superimposed filter provided by the present invention; figure 2 for figure 1 Left view of the schematic diagram shown; image 3 For the edge figure 2 A schematic cross-sectional view in the direction of B-B; Figure 4 For the edge figure 1 A schematic cross-sectional view in the direction of A-A; Figure 5 Is a schematic top view of the filter body; Image 6 for figure 1 Rear view of the schematic diagram shown; Figure 7 Is a schematic front view of another specific embodiment; Figure 8 for Figure 7 The cross-sectional structure diagram of the specific embodiment shown.

[0038] In a specific implementation of a superi...

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PUM

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Abstract

The invention discloses a stacked filter. The stacked filter comprises a filter body, an oil way cover plate and a filter element; the filter body is installed between a valve station and a plate type hydraulic valve, the oil way cover plate is detachably installed on the filter body, the filter body is provided with a filter element cavity, the filter element is arranged in the filter element cavity, a main oil passage is arranged in the filter body and is communicated with the filter element cavity, and a medium entering the main oil passage is led to the outer side of the filter element in the filter element cavity; a filter oil inlet is formed in one side surface of the filter body, a filter oil outlet is formed in the other side surface of the filter body, the filter oil inlet is communicated with the main oil passage, and the filter oil outlet is communicated with the filter element cavity through an oil way in the oil way cover plate. The stacked filter locally filters a control valve with higher precision requirements to form local protection under the condition that the filtering precision of the main oil passage is not high and the filtering reliability is not enough, so that the service lives of equipment and a system are prolonged.

Description

technical field [0001] The invention relates to the field of hydraulic technology, in particular to a stacked filter for medium filtration. Background technique [0002] The cleanliness of the medium in the hydraulic system is a key technical index, which affects the life and reliability of the entire hydraulic system. Especially for high-precision hydraulic control valves such as electro-hydraulic servo valves and electro-hydraulic proportional valves, they have higher requirements on the cleanliness of hydraulic media, and their failures are mostly caused by oil pollution. [0003] At present, in order to ensure the cleanliness of the medium in the hydraulic system, the medium in the hydraulic oil circuit is generally filtered by installing a high-pressure filter, an oil return filter, and an oil suction filter. In practical engineering applications, high-precision pipeline filters are very easy to clog, and to meet the flow capacity of the main oil circuit, the size of t...

Claims

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Application Information

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IPC IPC(8): F15B21/04
CPCF15B21/041
Inventor 宋孝臣刘鹃唐华
Owner 北京机床所精密机电有限公司
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