Backwash high pressure filter station

Abstract

The invention discloses a backwashing high-pressure filter station, which belongs to the field of backwashing high-pressure filter devices for hydraulic systems of underground comprehensive mining hydraulic brackets. The backwashing high-pressure filter station comprises a machine seat (1) and a high-pressure filter (4), and is characterized in that: a rotating machine seat (11) is arranged on the upper part of the machine seat (1); an integrated valve seat device (7) is mounted through the rotating machine seat (11); the bottom of the integrated valve seat device (7) is connected with the high-pressure filter (4) and an energy storage device (3); the lower part of the high-pressure filter (4) is connected with a draining valve (2); and a waste liquid recovering device on the lower part of the draining valve (2) is connected with a recovery filter (12). The backwashing high-pressure filter station has the advantages of large flow, high precision, capability of on-line washing, obviouswashing effect, capability of recycling backwashing liquid and the like; and when the backwashing high-pressure filter station is used, the continuous production operation can be ensured, energy conservation and environment protection can be ensured and the cleanness of the working medium can be ensured effectively.

Description

technical field [0001] The utility model relates to a backwashing high-pressure filter station, which belongs to the field of backwashing high-pressure filter devices of a fully mechanized mining hydraulic support hydraulic system in a coal mine. Background technique [0002] The medium of the hydraulic system used in the coal mine fully mechanized mining hydraulic support is emulsion. The hydraulic system of fully mechanized mining equipment needs high cleanliness emulsion, and the high pressure filter station is used at the front stage of fully mechanized mining equipment for the last filtration. . The cleanliness of the emulsion is directly related to the normal operation of fully mechanized mining equipment and the key to equipment life. The main factors that lead to the impurity of the emulsion are: [0003] 1) Roughness caused by the relationship between water quality and oil quality when the emulsion is mixed; the crystallization of the compound after water and oil ...

AI Technical Summary

Problems solved by technology

[0003] 1) Roughness caused by the relationship between water quality and oil quality when the emulsion is mixed; the crystallization of the compound after water and oil mixing; the sundries brought out by the hydraulic equipment after the emulsion is recycled and the inner wall of the rubber hose flowing through the medium The shedding particles caused by high-speed friction, as well as a large amount of coal dust and other pollutants produced by the factors of the underground working environment of the coal mine, will cause serious pollution to the emulsion, resulting in loss of control of the hydraulic system, damage to various electro-hydraulic valves and equipment, For example, the high-pressure filter station produced by Beijing Tianma Factory uses a very precise electro-hydraulic valve as the control valve. Due to the pollution of the pre-stage medium, the valve is out of control and the whole product cannot operate normally.

[0004] 2) The main function of the high-pressure filter station is to filter out high-precision emulsion, and the filter element is the key. However, there are big problems in the technical field of filter element cleaning. From the use of traditional filters, there are two analysis methods. Two forms: ①During normal use, the medium enters the inside of the filter element, filters the sediment from the inside to the outside, and filters in the inner cavity of the filter element, resulting in the phenomenon that it cannot be rinsed and the sundries cannot be discharged; ②Although some media flow and filter from the outside to the inside, the pollutants It is firmly attached to the outer surface of the filter element, but most of its recoil forms are flushed from the inside to the outside and from the top to the bottom, resulting in poor flushing effect

For example, in the automatic backwash high-pressure filter station produced by Beijing Tianma Factory, the filter element is fixed on the upper valve body, and the pollutants adhere to the outer surface of the filter element. When backflushing, it backwashes from the inside of the filter element from top to bottom, because the backflush liquid never completely blocks. Firstly, the pressure is released in the mesh of the filter, and the debris cleaned is only a small part of the upper end of the filter element, about 20% of the cleaning area; it is far from reaching the required cleaning effect

③ Due to pollutants, the hydraulic control valve does not move, the main channel cannot be opened or closed, and the online function cannot be realized, resulting in the filter station being unusable

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