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A filtering device and filtering method for internal circulation of a hydraulic station

A filter device and internal circulation technology, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of passive complexity, increased cost, insufficient filtration capacity, etc.

Active Publication Date: 2016-01-20
LAIWU IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In production, a double cylinder filter is generally used to filter the hydraulic oil individually. In case of maintenance of the hydraulic system, such as replacement of hard pipes, valve tables and other large-scale maintenance activities, the internal circulation filtration system of a single filter has insufficient filtration capacity, and large Particulate impurities quickly block the filter element of the filter, resulting in frequent replacement of the filter element; if the double-tube coarse filter is used first, and then the double-tube fine filter is used, the above situation can be alleviated, but two filter cartridges are used, and two filter cartridges are used. Spare, low usage
This kind of internal circulation filter system needs to manually switch the valve every time the filter element is switched. Even if an automatic switching device is installed, although the oil can be filtered, the utilization rate is still not high.
For the above problems, engineers and technicians cannot achieve the desired effect through different methods, or cause increased costs, or cause complicated control, or cause problems such as low filtration efficiency, or even the passive and complicated problem of changing the filter element after frequent shutdown of the internal circulation system

Method used

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  • A filtering device and filtering method for internal circulation of a hydraulic station
  • A filtering device and filtering method for internal circulation of a hydraulic station
  • A filtering device and filtering method for internal circulation of a hydraulic station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 1 and Figure 9 As shown, a filter device for circulation in a hydraulic station, the filter device includes a first valve block 121, a second valve block 122, a third valve block 123 and a fourth valve block 124;

[0058] The first valve block 121 is provided with a first cartridge check valve 63 , a first oil inlet cartridge valve 51 , a first oil return cartridge valve 72 and a first pressure relay 34 ;

[0059] The second valve block 122 is provided with a second cartridge check valve 61, a second oil inlet cartridge valve 52, a second oil return cartridge valve 73 and a second pressure relay 32;

[0060] The third valve block 123 is provided with a third cartridge check valve 62, a third oil inlet cartridge valve 53, a third oil return cartridge valve 71 and a third pressure relay 33;

[0061] The fourth valve block 124 is provided with a pressure reducing valve 11, a first solenoid valve 41, a second solenoid valve 42 and a third solenoid valve 43...

Embodiment 2

[0081] Such as Figure 11 , Figure 12 as shown, Figure 11 It is another structural front view of the filter device of the present invention; Figure 12 It is another control schematic diagram of the filtering device of the present invention.

[0082] Another structure of the filter device: the first solenoid valve 41 communicates with the first oil inlet cartridge valve 51 and the first oil return cartridge valve 72 respectively through the control oil pipe, and the second solenoid valve 42 communicates with the first oil inlet cartridge valve 72 through the control The oil pipes are respectively connected with the second oil inlet cartridge valve 52 and the second oil return cartridge valve 73, and the third electromagnetic valve 43 is respectively connected with the third oil inlet cartridge valve 53 and the third oil return cartridge valve through the control oil pipe. Valve 71 communicates.

[0083] The device in this embodiment may also include a relief valve 2 arra...

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Abstract

The invention discloses a filtering device and method used for internal circulation of a hydraulic station. According to the filtering device and method used for the internal circulation of the hydraulic station, a pump is connected with a first valve block, a second valve block and a third valve block through pressure pipes, filters are arranged between every two of the three valve blocks, and the first valve block, the second valve block and the third valve block are all connected with an oil returning pipe. Compared with the prior art, the filtering device and method used for the internal circulation of the hydraulic station have the advantages that due to the adoption of the three filters and the implementation of automatic control alarm switch of secondary filtering, the filtering effect is good; a cartridge valve adopted is a high-flow valve, pollution resistance is high, a filter element of an idle filter can be replaced freely, and the utilization rate is high; the filtering device is simple, tertiary filtering control can be achieved after an electromagnetic valve controlling oil pipe is exchanged, and filtering efficiency is improved.

Description

technical field [0001] The invention relates to the field of hydraulic pressure, and more specifically relates to a filter device and a filter method for internal circulation of a hydraulic station. Background technique [0002] In the production of enterprises, the hydraulic station plays a vital role in providing control power for production. The hydraulic station is equipped with an internal circulation filter system, which absorbs oil directly from the oil tank of the hydraulic station and then returns to the oil tank through the filter. In production, a double cylinder filter is generally used to filter the hydraulic oil individually. In case of maintenance of the hydraulic system, such as replacement of hard pipes, valve tables and other large-scale maintenance activities, the internal circulation filtration system of a single filter has insufficient filtration capacity, and large Particulate impurities quickly block the filter element of the filter, resulting in freq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/04
Inventor 陈传盛邵宪伟邹仲平刘纯玉栾兆华孟兆鹏武文健苏全明
Owner LAIWU IRON & STEEL GRP