SU1722531A1 - Cartridge filter - Google Patents

Abstract

The invention relates to devices for the separation of gas and liquid disperse systems and can be used in chemical, petrochemical, metallurgical, automotive and other industries in the main production and in mechanical treatment of wastewater and flue gases. The goal is to increase productivity by providing high-quality regeneration inside the cartridge filter, which is made in the form of a spring with upper and lower covers, with filter material fixed on the coils of the spring in the form of a tubular elastic knitted fabric. A regeneration device in the form of a hollow perforated rod is placed axisymmetrically in the filter, on which the bottom cover is fixed fixedly and the top cover is mounted with the possibility of axial displacement. Changing the distance between the upper and lower covers, you can automatically change the degree of cleaning, not changing the filter material, and achieve high-quality regeneration, which allows you to increase the productivity of the filtration process by 14-35%. 1 il.

Description

The invention relates to devices for the separation of gas and liquid dispersed systems and can be used in the chemical, petrochemical, metallurgical, automobile and other industries of the industry where mechanical treatment of wastewater or flue gases is performed.

Closest to the present invention is a cartridge filter with automatic discharge of sediment from the surface of the filtering material, which consists of a cylindrical body, with a filter cartridge in it in the form of a spring with two covers, on which the filter fabric is worn. Under the action of the pressure differential between the housing and the filter cartridge, the coils of the spring are compressed and

corrugations are formed on the filter surface of the fabric, on which sediment particles settle. When the precipitate is washed during regeneration, the washing fluid or gas is fed into the filter cartridge. The pressure inside the filter cartridge becomes greater than the pressure in the body, the coils of the spring expand, the filter fabric corrugates and the precipitate is washed off the filter surface.

The disadvantage of this filter is incomplete regeneration of the filter material due to the constant pore size, which leads to a decrease in the performance of the filtration process.

The aim of the invention is to improve the performance of the filter by regenerating the filter material,

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The goal is achieved by the fact that the filter is equipped with a regeneration device installed along the axis of the filter, made in the form of a hollow perforated rod, on which the bottom cover is fixed, and the top is mounted for axial movement, while tubular elastic knitted fabric is used as the filter material.

The drawing shows a diagram of the cartridge filter, the cut.

The cartridge filter consists of a frame in the form of a spring 1, on which the lower 3 and upper 4 covers are fixed on. On the turns of the spring 1 is worn and fixed filter material 2 from a tubular elastic knitted fabric. Inside the spring 1, a regeneration device is placed axisymmetrically in the form of a hollow perforated rod 5 with holes 6. In the lower part of the rod 5 there is a nozzle 7 for draining the filtrate and supplying washing liquid or gas. The bottom cover 3 is fixedly connected with the stem 5, and the top cover 4 is mounted on the stem with the possibility of axial movement. The upper part of the stem 5 is threaded, forming a screw pair with nut 8. Between the nut 8 and the top cover 4 is installed washer 9.

Cartridge filter works as follows.

The nut 8 is twisted to the limit, providing compression of the spring 1 with a minimum distance between the lower 3 and upper 4 caps. The spring 1 is wearing filter material 2 in the form of a tubular elastic knitted fabric, which

mounted on covers 3 and 4. Pipe 7 is connected to the filtrate receiver. A differential is created between the outer surface of the filter material and the stem 5.

pressure. Under the action of this pressure drop, the filtered liquid or gas passes through the pores of the filter material from the outside to the inside, and then through the hole 6 m in the hollow rod 5 through

pipe 7 in the collection of filtrate. Particles of the dispersed phase are retained in the pores of the filter material, forming a precipitate on its surface. Upon completion of the filtering mode, the nut 8 is unscrewed,

the spring 1 is straightened, the filter material is stretched, increasing the geometric dimensions of the pores. Reverse flow of liquid or gas supplied through the pipe 7 through the hollow rod 5 and the holes 6,

removes particles of the dispersed phase from the pores of the filter material.

Claims (2)

1. Cartridge filter containing a frame in the form of a spring on which is placed a filter material fixed by end caps, characterized in that, in order to increase the filter performance by regenerating the filter material, the filter is provided mounted along the axis of the filter with a device for regeneration, made in the form of a hollow perforated rod, on which the bottom cover is fixed, and the top is mounted with the possibility of axial movement. 2. The filter according to claim 1, about tl. And h and y and with the fact that as a filter material using tubular elastic knitted fabric.