SU1761198A1 - Chuck-type filter - Google Patents

Abstract

The invention relates to the filtration of liquids, namely, filters for sampling devices, and can be used in any industry. The goal is to increase the reliability of operation and increase the strength of the cartridge filter. A cartridge filter for cleaning fluid containing a cylindrical body with a bottom, granular filtering material, a cover with a cylindrical shell enclosing the case along its height a cylindrical shell whose height exceeds the height of the filter housing, the free end of the shell is made in the form of a latch adjacent to the bottom of the filter housing, which is made of polyethylene or polypropylene. The latch is made in the form of a sleeve coupled to the shell, protruding beyond the bottom of the housing and the filter and having an inner surface in the form of a reverse truncated cone, the diameter of the smaller base of which is smaller than the outer diameter of the filter housing. Interchangeable standardized plugs are provided on the filter inlets for both the inlet and outlet connections. 4 hp ff, 3 ill. cl

Description

The invention relates to the filtration of liquids, namely, filters for sampling devices, and can be used in any industry.

Known filter containing a cylindrical housing with a bottom, granular filter material enclosed between the filter discs, the cover and the axial inlet and outlet nozzles. One of the pipes is made together with the case, and the second is located on the lid of the cartridge filter. The cover with the housing is connected by a threaded connection.

The disadvantage of the known filter is the insufficient strength of the threaded connection with a small body size.

filter and use of cheap plastic materials (polyethylene, polypropylene). In order to achieve sufficient strength when using a threaded joint, the wall thickness must be at least 3 mm, which leads to a large consumption of the filter housing material, or, with a decrease in wall thickness, to the need to use more rigid and expensive materials.

The aim of the invention is to increase the reliability of operation and increase the strength of the cartridge filter.

This goal is achieved by the fact that a filter for cleaning a liquid (or for concentrating impurities on a granular filter material) contains cylinXJ

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drichny case with a bottom; made with an axial inlet nozzle, granular filter material, such as a sorbent, a cover with an output axial nozzle, which is made with a cylindrical shell enclosing the body over the entire height, the height of which exceeds the height of the filter body, the loose end of the shell is latching, and the cartridge filter is made polyethylene or polypropylene.

In addition, the differences consist in the fact that the latch is made of a sleeve adjoining the shell, protruding beyond the bottom of the filter housing and having an internal surface in the form of a reverse truncated cone, the diameter of the smaller base of which is smaller than the outer diameter of the filter housing, and the filter is equipped with standardized removable plugs designed for installation both on the inlet and on the outlet.

1 shows the filter section; figure 2 - node I of FIG. one; on fig.Z - cut stub.

The filter for cleaning the liquid (or for concentrating the impurities contained in the liquid on the granular filtering material) includes a cylindrical body 1 with a bottom 2, a granular filtering material 3, for example a sorbent, a cover 4 with a cylindrical shell 5 enclosing the body along its height having a plug 6 in the form of a coupled sleeve, the inner surface of which has the form of a reverse truncated cone 7, the smaller base 8 of which is smaller than the outer diameter of the housing 1, and its end 9 is adjacent to the bottom 2 of the housing 1, the filter has an axis the inlet 10 and outlet 11 nozzles, which are closed by a plug 12. The filter is made of a polymeric material, for example high density polyethylene (for example, 108 or 153 (or polypropylene (for example 21060-30)). The granular filter material 3 is enclosed between two filter discs 13 and 14.

This goal is achieved by combining the design features of the cover with a shell having a latch and manufacturing them from a polymeric material (polyethylene or polypropylene).

The proposed cartridge filter design makes it possible to increase the reliability of operation due to the presence of a latch made in conjunction with the sleeve grommet and protruding beyond the bottom of the filter housing, which prevents the separation of the elements of the cartridge filter with increasing pressure at the inlet.

The presence of the shell and housing increases the strength of the walls of the cartridge filter,

which makes it possible to use for the manufacture of available plate-like polymeric materials, for example, polyethylene or polypropylene, which are resistant to shock loads.

Thus, the application of the proposed cartridge filter design and the use of polymeric materials allow to increase the reliability of the filter operation and increase its

shock resistance

An additional advantage of the proposed design is the possibility of using standardized plugs at both the inlet and outlet.

nozzles, as well as the possibility of sequential direct connection of cartridge filters into a series of two or more pieces, since the outlet nozzle is designed in such a way that it can tightly

inserted into the inlet of the next cartridge

An example of the specific use of a cartridge filter.

To concentrate impurities 0-;

2,4-di; 2,4,6-tri-; and pentachlorophenols in water use a cartridge filter made of brand 108 polyethylene with an internal diameter of 7 mm and a height of 22 mm. A filter disk made of porous fluoroplastic is installed on the bottom of the filter housing and the internal volume of the housing is filled with a sorbent based on 60-μm porous silica gel particles chemically modified with cetyl dimethyl chlorosilane. A second filter disc is inserted into the cartridge filter cover and the body is closed with the cover until the latch is pulled out over the bottom edge.

The test water containing chlorophenols at a concentration of 10 mg / ml is pumped with a syringe in an amount of 100 ml through a cartridge filter at a rate of 50 ml / min. After pumping water

concentrated phenols are successively eluted with 1 ml of a mixture (60:40) of water and acetonitrile and 1 ml of pure acetonitrile. In the first fraction of the eluate, 0-, 2,4-dichlorophenols are determined, and in the second - 2,4,6-tri- and

pentachlorophenol. The content of phenols in the fraction is determined by high performance liquid chromatography using a UV detector.

Analyzed compounds are detected quantitatively at the level of 96-100%.

The degree of concentration achieved is 100, which allows the use of standard instruments and methods for the determination of chlorophenols in water,

Claims (5)

1. A cartridge filter for cleaning liquid comprising a cylindrical body with a bottom, a granular filter material enclosed between filter discs, a cover and axial inlet and outlet nozzles, characterized in that, in order to increase the reliability of operation and increase the strength of the filter, roofs - ka is made with a cylindrical shell enclosing the body along its height, the height of which exceeds the height of the filter housing, while the free end of the shell is made in the form of a latch adjacent to the bottom of the filter housing, with the elements filter housing made of a polymeric material. 2. The filter according to claim 1, wherein the latch is made in the form of a sleeve coupled with a shell, protruding beyond the bottom of the filter housing and having an inner surface in the form of a reverse truncated cone, the diameter of the smaller base of which is smaller than the outer diameter enclosures 3. A filter according to claim 1, characterized in that impact polyethylene or polypropylene is used for the quality of the polymer material. 4. The filter according to claim 1, characterized in that it is provided with standardized plugs. 5. The filter according to claim 1., of which is that the outlet nozzle is adapted to be connected with other nozzles. 13 go l / L. to § fih