SU1389823A1 - Bag filter - Google Patents

Abstract

The invention relates to a technique for cleaning dust from gases and can be used in the metallurgical, construction, chemical and other industries that require thin cleaning of gases from dust. Its use will improve the efficiency of the filter in operation by eliminating atmospheric air leaks when replacing filter elements, as well as due to a more even distribution of the dusty gas over the cross section of the sections and reducing the entrainment of dust from the hopper to the hoses. A gas filter bag for gas cleaning is provided with screens mounted successively above the screw and inclined plates fixed between the vertical partitions and the screens. The filter is also provided with guide vanes attached to the side wall of the bunker and placed between adjacent partitions. In addition, the upper part of the side wall of the bunker from the collector side of the gaseous gas can be made in the form of a concave surface. 2 h. n. f-ly, 5 ill. S (l

Description

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The invention relates to a technique for cleaning gases from dust, and more specifically to bag filters with a pulsed backward purge, and can be used in the metallurgical, chemical, construction and other industries of the national economy, where thin cleaning of gases from dust is required.

The aim of the invention is to increase the efficiency of the filter in operation by eliminating atmospheric leakage.

39, and the guide vanes 37 (fig. 2) are the side wall design of the bunker.

The filter works as follows. During the filtration period, the dusty gas enters through the collector 7 into the bunker 2, from there into the chamber 18 of the dirty gas and is filtered through the filtering elements 14 with dust deposited on their outer surface. Guide vanes 37 or 38

air, when replacing filter elements, Yu (depending on the design of the operating sections, also due to booning) directs the gas flow across a uniform distribution of the dusty hopper, which eliminates the possibility of a blast gas across the section and reduction of the flow gas deposited in the hopper entrainment dust from the hopper to the sleeves. Dust and its fall back to the filter FIG. 1 shows the filter in the working elements.

- regeneration of filter elements 14

carried out in groups of several pieces. The dispensing valves 20 are alternately turned on and provide access to the purge air to the regeneration devices 15. local incision along the valve valve junction node 0 Valve distributing manifolds 19, connectors); in fig. 4 — bunker part, successively fitted by adapters 27, isometries; in fig. 5 - the same, option. The filter includes a housing 1, a hopper 2, to which is attached a housing 3 of a screw 4 with a chute 5, collectors 6 and 7 clean and dirty, transverse section; in fig. 2 - the same, option; in fig. 3 - a filter with a removable collector wall, side view (on the filter section on the left, the section wall is also removed, at the top at the junction of the two sections is given

they serve at the same time to transport and dispense through the purge air sections.

Replacing cassettes 13 with a deadline

foot gas separated by inclined treatment with filter elements 14

8. The casing and the bunker are divided by vertical partitions 9 into separate sections 10, each of which has valves 11 and 12 that cut the section from the collectors 6 and 7 of clean and dirty gas, respectively. In sections 10, cassettes 13 with filter elements 14 and element-by-element pulse regeneration devices 15 are placed. The reference plates 16 cassettes 13 divide the sections

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is performed section by section without stopping the entire filter. For this, the section is turned off by the valves 11 and 12 from the collectors 6 and 7 of pure and gaseous gas, the valve 11 is lifted by a lifting mechanism (not shown) by the traverse 34 and fixed in this position, and the valve 12 is lowered by the pneumatic cylinder 31. After that, the compensation valve 24 opens and in the section, pressure is established, on the chambers 17 and 18 of the pure, i phrased j, equal to the atmospheric pressure. Freed from gas. In chambers 17 of a clean gas, the pressing pressure that valve distributing manifolds appear is due to the difference between atmospheric and internal 19 with distributing valves 20. At the classic pressure, the caps 22 behind the collectors 19 and the walls of the sections 25 of the bracket 25 are easily opened labyrinth seals 21 are installed manually From atmospheric air when the lids 22 are fixed by hinges 23 on 40 open lids 22 to adjacent sections of valve assemblies, one of the lids protects the labyrinth seal through each hopper section. azovannoe screens 35, casing 3 and 4. Unloading schnekom collected dust produced schnekom April 25 and 26 for their opening. Valves through chute 5 in the casing 3. The collectors 19 of all sections are connected after- In the filter, the isolation of the sections from each other when replacing the filter elements is ensured, regardless of the presence of a layer of dust in the bunker part, with valves that cut off sections from the collection 32 and 33, interconnected tori of clean and dirty gas and extracross 34. In the bunker 2 above the screw there are 4 wounds of the screw fixed on the inter-screens 35, hidden from the scaling section partitions. The combination of auger, wadding of dust plates 36, mounted on the casing of the auger and screens is angled to one another. A bunker with a design similar to the labyrinth side of the dusty gas inlet is sealed.

guiding blades 37 and 38. Guiding 55 Intersection baffles 38 (fig. 1) mounted from two plates mounted at an angle to the wall of the bunker between the intersection one to the other, is necessary for exclusive baffles using dust hangers on the screens.

Doi section has a compensation valve 24, made in the form of a hatch. The caps 22 and the compensating valves 24 have brackets

Consequently, adapters 27. Valves 12 are connected by plugs 28 located in pipes 29 with rods 30 of pneumatic cylinders 31. Valves II have two

carried out in groups of several pieces. The dispensing valves 20 are alternately turned on and provide access to the purge air to the regeneration devices 15. Valve distributing collectors 19, connected in series by adapters 27,

they serve at the same time to transport and dispense through the purge air sections.

Replacing cassettes 13 with a deadline

service by filter elements 14

In the filter, the guide vane creates a horizontal dust and gas flow, evenly distributed over the entire section of the section, and forms a stagnant zone in the bunker, in which there is unhindered sedimentation of dust. The constructive implementation of the guide vane (Fig. 2) makes it possible to reduce the height of the bunker by 6%, but it is more difficult to manufacture, since the parts of the bunker and the dividing walls have a rather complicated configuration.

Claims (3)

Invention Formula . Bag filter for cleaning gases from dust, comprising a housing and a bunker divided by vertical partitions into sections, cassettes with filter elements, pulse elemental regeneration devices, collectors of clean and dirty gas, gate valves at the inlet and outlet sections, valve distributing collectors and unloading screws dust, characterized in that, in order to increase work efficiency, the filter is equipped with screens mounted successively above the auger and attached to the lower part of the partitions and screens with inclined plates E. 2. A filter according to claim 1, characterized in that it is provided with guide vanes attached to the side wall of the bunker, which are located between adjacent partitions. 3. The filter according to claim 1, characterized in that the upper part of the side wall of the hopper on the side of the collector of the dirty gas is made in the form of a convex surface. 27 W 25 2312019 V / - -LIL-f I 27 J3 25 2312в1 22 / / eight 28 29 2 U FIG. 2 25 2 26 Id 22 21 212P 32 J7 ; J2 Fy FIG. five