RU230146U1 - Self-cleaning mesh filter - Google Patents

Abstract

The utility model relates to filtering equipment and is intended for cleaning oil from mechanical impurities. The self-cleaning mesh filter includes a housing with inlet and outlet pipes, filter elements with a filter mesh. The filter elements are made in the form of two hollow cylinders connected by flat plates, to which a filter mesh is attached. Inside each element, annular conical guide pipes are placed, wherein the outer side walls of the annular conical guide pipes are located at a distance from the outer surfaces of the filter mesh to form an annular cavity communicating with the cavity of the inlet pipe. Technical result: increasing the period between repairs. 1 clause, 2 figs.

Description

The utility model relates to devices for cleaning from mechanical impurities by filtering oil in order to protect pumping equipment from damage at oil industry facilities.

A device for cleaning oil from mechanical impurities, a self-cleaning mesh filter, Russian Federation Patent No. 2542269 IPC B01D 29/00 (2006, 01), a module for preliminary cleaning of liquid is known. The known device contains a vertical housing, inlet and outlet pipes, a filter element. The disadvantage of this design is the lack of adaptation for washing away certain sizes of suspended particles. Relatively small filtration surface, which leads to low productivity of the device. A device is known that contains a vertical housing with inlet and outlet pipes, a filter cassette with a mesh located perpendicular to the liquid flow (filter SDZh, manufactured according to TU 3683-016-00220322-99). The disadvantage of this filter is a small filtration area, which is especially noticeable with large volumes of liquid pumping and, as a result, entails a reduction in the maintenance-free period.

The objectives of the utility model are to improve the quality of filtration and increase the period between filter repairs.

The technical task of the proposed solution is aimed at ensuring increased reliability of the filter operation, simplifying assembly and operation at a given high level of filtration rating. This technical result is achieved by the fact that the inner side walls of the filter chamber and the outer side walls of the annular conical guide pipe are located at a certain distance from the outer surface of the filter mesh to form an annular cavity around the filter element, communicating with the cavity of the inlet pipe. This design allows using meshes with different cell sizes. Complete cleaning of the filter mesh from jammed mechanical impurities is carried out due to backwashing during reverse deflection of the filter mesh surface. High reliability of the filter is achieved by the fact that there are no moving mechanical parts in the filter.

The technical result of the utility model is to increase the period between repairs.

The set task is achieved by the fact that in a self-cleaning mesh filter, containing a housing with inlet and outlet pipes, the filter elements with a mesh are made in the form of two hollow cylinders connected by flat plates, to which a filter mesh is attached, and inside each there are annular conical guide pipes located at a distance from the filter mesh, forming an annular cavity communicating with the cavity of the inlet pipe.

Fig. 1 shows a general view of the filter, Fig. 2 shows the filter element of the filter (6, Fig. 2).

The filter comprises a housing 2, inlet and outlet pipes, an upper disk 3, annular conical guide pipes 4, 5, an intermediate support disk 9, a lower separating disk 10, drainage cylindrical pipes 8 and filter elements with an inclined filter mesh 6.

The filter is installed on legs and connected to pipelines using flange connections.

The filter works as follows.

The liquid enters the housing 2 through the inlet pipe, then passes through the annular channels formed by the inner surface of the filter element and the outer surface of the conical guide pipe, the purified liquid passes through the filter mesh 7 and enters the outlet of the filter, the mechanical impurities formed on the surface of the mesh are washed away by the liquid flow and flow through the drainage cylindrical pipes to the bottom of the filter. Complete cleaning of the filter mesh is carried out by backwashing.

To check the technical condition of the filter element and in case of clogging, disassembly is carried out in the following order: remove the cover, remove the upper disk 3, then remove the filter elements 6.

The filter is assembled in reverse order.

Claims (2)

1. A self-cleaning mesh filter for cleaning oil from mechanical impurities, comprising a housing with inlet and outlet pipes, filter elements with a filter mesh, characterized in that the filter elements are made in the form of two hollow cylinders connected by flat plates to which a filter mesh is attached, inside each element there are annular conical guide pipes, wherein the outer side walls of the annular conical guide pipes are located at a distance from the outer surfaces of the filter mesh to form an annular cavity communicating with the cavity of the inlet pipe. 2. A self-cleaning mesh filter according to item 1, characterized in that the drainage cylindrical pipes are secured in the intermediate support disk and the lower separating disk.