SU1084043A1 - Filter for cleaning liquids - Google Patents

Abstract

JUM FILTER CLEANING LIQUIDS, containing filter screen. Made in the form of a cylindrical spiral of a flat ribbon with a distance, And Ippshiruyuschie protrusions on the side surface between the coils, the bottom and the connection. body mounted on the ends of the helix and connected by hairpins, characterized in that, in order to reduce the complexity of the filter, the helix is made of two tapes, one of which has spacing tabs and the other is smooth, while the spacing tabs on the tape are hemispherical and located on its inner and outer edges are staggered. G. (L

Description

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in FIG. 1, the invention relates to filtering, in particular to liquid filters intended for transformer oil from mechanical impurities of oil-filled induction apparatuses carried out during operation, and can be used in other folk industries such as oil, chemical, autotractor industry x. A filter for cleaning liquids is known, which contains a filtering grid made in the form of a cylindrical spiral of flat tape with spacer protrusions on the side between the turns, the bottom and the mounting flange Cl3. The disadvantages of the filter are the pipe capacity of its manufacture and the possibility of deformation of the helix due to its skew, since the spacer tabs are located on one edge of the tape. The goal of the invention is to reduce the labor intensity of making a filter. This goal is achieved by the fact that in a well-known filterj containing a filtering grid, a perfect cylindrical spiral made of flat tape with spacer tabs on the side surface between the turns, the bottom and the connecting flange, placed along the ends of the spiral and connected by pins, is a spiral of two strips, one of which has distancing protrusions, and the other is smooth, while the distancing protrusions on the ribbon are hemispherical and located on its inner and outer edges in a checkerboard pattern. Figure 1 shows the filter, axial section; figure 2 - section aa in figure 1 in fig.Z - section bb in figure 1; figure 4 is a view In figure 1; on fig.Z - type G in figure 4; figure 6 - section dD in fig.Z; Fig.7 - section EE of Fig.Z. The filter consists of a frame comprising a bottom 1, a flange 2 - and a threaded pin 3 with nuts 4 for tightening the filtering grid 3 with the indicated bottom Hf of the flange. The filtering grid 3 is made in the form of a cylindrical Spiral wound from flat tapes 6 and 7, the filter elements of which are its turns located on an edge with an interval along the axis. In order to form the intervals, the tape 6 has spacer protrusions 8 and half of the components of the spiral turns have on both planes these protrusions having a hemispherical shape 8 (Figures 6 and 7). The protrusions are arranged in a checkerboard pattern. The tape 7 is made smooth and therefore the turns with the ridges alternate through one with the turns without the ridges. At production of the filter of a tape reel at the same time. The invention reduces the laboriousness of making a filter and provides a constant gap equal to the height of the protrusions of the relief tape, which improves the quality of cleaning liquids from mechanical impurities and, accordingly, increases the reliability of the induction apparatuses.

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Claims (1)

FILTER FOR CLEANING LIQUIDS, containing a filter grate. Made in the form of a cylindrical spiral from a flat ribbon with spacing protrusions on the side surface between the coils, the bottom and connecting flange, located at the ends of the spiral and connected by studs _2, characterized in that, in order to reduce the complexity of manufacturing the filter, the spiral is made of two tapes, one of which it has spacing protrusions, and the other is smooth, while the spacing protrusions on the tape are hemispherical and are staggered on its inner and outer edges. SU <1084043 figure 1