SU1674921A1 - Granular filter - Google Patents

Abstract

The invention is intended to purify gases from mechanical particles. The goal is to increase the interregeneration period. The filter includes a housing with connections. filtering element with granular material bounded by a spiral with an end plate mounted for reciprocating movement and connected to a rod having a plug connected to the bellows, whose corrugations are made of screw-shaped elastic-elastic material and reinforced with a wire spiral The lower part of the bellows is mounted on a cylinder with a helical internal groove in which the chip chips, radially mounted on the rod. 3 silt

Description

The invention relates to equipment for the purification of gases from mechanical impurities and can be used in the chemical, food and other fields of industry.

The purpose of the invention is to increase the interregeneration period.

FIG. 1 shows a filter, a general view; in fig. 2 - section aa in fig 1; in fig. 3 - node I in FIG. 1

The filter includes a housing 1 with an inlet 2 and an outlet 3 with nozzles, a filtering element 4 with a bottom end sc / c. Tinoi 5 and a granular material 6. enclosed in a spiral helix 7

The upper end of the spiral 7 is connected to the housing 1 by means of a cylindrical insert 8, and the lower end is attached to the plate 5 connected to the rod 9, on which the cap 10 is fixed on top connected to the bellows 11 made of an elastic material, for example rubber, and mounted on the cylinder 12

The bellows 13 of the bellows is screw-shaped and reinforced with a wire helix 14. This allows the bellows to be twisted while maintaining its tightness.

On the inner side of the cylinder 12 there is a screw groove 15 in which the fingers 16 are placed radially attached to the rod 9.

Plate 5 has lamellar springs radially reinforced along its perimeter; 17

The free ends of the springs 17 are in contact with the stops 18 fixed on the inside of the housing 1.

The housing 1 has a port 19 for filling the granular material and a pipe 20 for removing the spent granular mat. The cavity of the bellows 11 is reported g

with

with

about

X

-N

yu yu

atmosphere through the open end of the cylinder 12

Plate 5 is installed with the possibility of reciprocating movement

The filter works as follows

The gas to be cleaned through pipe 2 is fed into the cavity of body 1, from where, through the gaps between the turns of the spiral 7, an n layer of granular material 6 gets and passes through it, cleared of dust through pipe 3, from the filter

As dust accumulates in the outer layer of the granulated material and forms crusts in it, the filter capacity drops. Therefore, the pressure in the housing 1 increases and this causes overpowering down the carcass 10 together with the rod 9. Fingers 16 pieces of NgO slip along the groove 15 and cause the specified rods.

Since the rod 9 is rigidly attached to the plug 10 and the plate 5, the plate 5 and the plug 10 rotate simultaneously.

The rotation of the plate 5 leads to the twist of the spiral 7 and the rotation of the plug 10 causes the twist of the corrugations 13 of the bellows 1 I

When the spring is sleeping, the spring 17 contacts the stops IS, bends and jumps off the said stops, and the helix 7 is inserted.

Following the isiie of stretching, twisting and shaking of the helix 7 of the crust in the outer layer of granular material, b is intensively destroyed into separate pieces, between which new paths of passage of the gas being purified are formed. When they are filled with dust during the further operation of the filter, the pressure in the housing 1 rises again and the plug 10 moves down again, causing the helix 7 to further stretch, twist and shake it, etc., resulting from this dust, settling in the granular material more fully fills its volume.

To remove accumulated dust, first of all, they briefly block the supply line (ase. In this case, a vacuum is formed in the cavity of the housing 1 and the cap 10 moves upward under the pressure of atmospheric air, squeezes the helix 7 and simultaneously unwinds and shakes. destroyed.

To move the plug 10 down, the gas outlet 3 is closed, and the cavity of the housing 1 is again communicated through the pipe 2 to the gas supply line. Then the cycle repeats

Number of stretching cycles - compress with simultaneous twist and spin

the helix and its shaking depends on the physicomechanical properties of the granular material 6 and dust

The dust from the particulate material is removed by reverse air blowing. Removal

granular material 6 from the filter is carried out by stretching the helix 7 by a slightly larger amount. At the same time, the granular material is poured out between the turns of the helix 7 and removed through the nozzle 20

Technical and economic efficiency

The proposed filter compared to the known one is to increase the intergeneration period to 27–30% by using fortified

the bellows of the cylinder with screw grooves and fingers radially mounted on the rod, as well as the execution of the bellows of the bellows helical, which allows compressing and stretching the helix with the granular material simultaneously with its twisting and unwinding. The installation on the bottom of the spiral of flexible plates in contact with the stops allows for simultaneous shaking of the spiral, which

also contributes to the increase of the filter- cycle.

Claims (1)

Claims of Invention A granular filter for gas cleaning comprising a housing with inlet and outlet branch pipes, filtering element, including the lower end plate and granular material, enclosed in a spiral helix, the upper end of which is connected to the body, and the lower end - to the end plate a filter element mounted for reciprocating movement and connected by means of a rod and a plug with a bellows. communicating with the atmosphere and fixed to an upper end of a cylinder located at the bottom of the housing, characterized in that, in order to increase the interregeneration period, a screw groove is made on the inner surface of the cylinder, and the bellows is made of an elastic material and has corrugations reinforced with a wire spiral, while the rod is made with fingers placed in the cylinder groove, the housing is provided fixed on the inner surface of the lugs, and the end plate of the filter element - plate springs in contact with the body stops. Aa T node FIG. 2 FIG. J