SU1599051A1 - Filter for pretreatment of cooling water - Google Patents

Abstract

The invention relates to devices for the separation of inhomogeneous media. The goal is to reduce metal consumption and dimensions. This is achieved by placing the filter elements 5 and 12 coaxially one inside the other and supplying the filter with an annular sector 17, which makes it possible to increase the filtering surface and refuse to use a unified valve. 2 Il.

Description

fS 7D FIG. one

This invention relates to the separation of heterogeneous mixtures and can be used in the chemical and other industries.

The purpose of the invention is to reduce the metal content and size.

FIG. 1 shows the filter section; in fig. 2 shows section A-A in FIG. one.

The filter comprises a housing 4 divided by a horizontal partition 1 into the lower inlet 2 and the upper outlet 3 of the chamber, equipped with a frame located in the outlet of the chamber 3 with filtering elements 5 made in the form of coaxially arranged upper 6 and lower 7 rings fastened with the forming, vertical sections 8 with radial partitions 9 and a central shaft 10 supported on a hinge 11. Between the rings 6 and 7 and the shaft 10, additional upper 13 and lower 14 rings are also provided with additional filtering elements 12, the same TCR fastened to the shaft 10 by at least two horizontal walls 15 and 16, wherein the lower baffle 15 is bonded to the annular sector 17, the outer ring 7 disposed within one vertical section.

The housing 4 is closed by a lid 18, through the central opening of which a shaft 10 is connected, which is connected to a lever 19 serving to rotate the shaft 10 around a central axis. The housing 4 is provided with a feed 20 and a discharge pipe 21. In the lower inlet chamber 2 of the housing 4 there is a drain box 22 connected to the filter section 8 by an opening 23 in the horizontal partition 1. The lower chamber 2 communicates with the upper chamber 3 by an annular opening.

The filter works as follows.

The water contaminated with mechanical impurities enters the lower chamber 2 of the housing 4, and then through the opening 24 in the horizontal partition 1 into the filter sections 8 of the frame. From the filtering sections 8 through the filtering elements 5 and 12, the purified water enters the outer space between the filtering elements 5 and the housing 4 and the inner space between the filtering elements 12 and the shaft 10. From the outer annular space along the wall of the housing 4, the water passes into the outlet nozzle 21 From the inner annular space, water leaves through a channel formed by an annular sector 17, two solid

partitions 9 and the housing cover 18, into the outer annular space and further into the outlet manifold 21. The process of washing the filtering elements 5 and 12 is performed according to a signal from the differential pressure gauge connected to the manifolds 20 and 21, as follows: by turning the frame arm 19 by one section 8 opens the opening 23 communicated with the drain box 22, and flushes out the filtered mechanical impurities from the filter elements 5 and 12 from the annular spaces through the hole 23 into the drain box 22. At the end of the sequential washing of all sections 8, the ring sector 17 5 animaet position over opening 23, thereby closing it. The frame, turning in the baffle 11, moves in a vertical direction relative to the horizontal overcast 1 and at the end of the rinse occupies the lower position, in which the ring section of the torus 17 tightly blocks the drain hole 23.

Thus, the function of the valve is performed by the annular sector 17. The use of the main 5 and additional 12 filter elements makes it possible to reduce the dimensions of the diverting chamber 3 and reduce the metal consumption of the structure.

Formula inventions

30 Filter for pretreatment of cooling water, for example, of a power plant, containing a housing divided by a horizontal partition into lower supply and upper removal chambers, a frame with filtering elements in the discharge chamber, made in the form of coaxially arranged upper and lower rings , fastened forming vertical sections by radial partitions with a central shaft supported on .f. a baffle located on the partition can be rotated relative to it, characterized in that, in order to increase the specific area of the filter surface while reducing the size, it is equipped with an additional filter element with 45 upper and lower rings, two horizontal partitions, by means of which the rings of the additional filter element connected to the central shaft, and an annular sector located within one vertical section, with an additional filter element placed to axially between the central shaft and the main filter element.

20

FIG. 2

Claims (1)

Claim A pre-filter for cooling water, for example, a power plant, comprising a housing divided by a horizontal partition into a lower inlet and an upper outlet chamber, a frame with filtering elements located in the outlet chamber, made in the form of coaxially arranged upper and lower rings, fastened together with vertical sections forming radial partitions with a central shaft supported on a thrust bearing located on the partition with the possibility of rotation relative to it, characterized in that, with the aim of increasing I the specific area of the filtering surface with a decrease in size, it is equipped with an additional filtering element with upper and lower rings, two horizontal partitions, through which the rings of the additional filtering element are connected to the central shaft, and an annular sector located within one vertical section, with an additional filtering the element is placed coaxially between the central shaft and the main filter element.