SU1755886A1 - Bag filter - Google Patents

Abstract

Use: for cleaning gases from dust and can be used in the industry of building materials, metallurgical, chemical and other branches of the national economy. The essence of the invention in a bag filter plugs are equipped with valves made in the form of an elastic tube with a diameter smaller than the diameter of the sleeve. This tube is made removable , with an oval cross-sectional shape and is connected with a plug by a plastic fitting 5 з п f-ly, 5 Il.

Description

The invention relates to a technique for cleaning gases from dust and can be used in the building materials industry, metallurgical chemical and other sectors of the national economy.

Closest to the claimed is a filter for cleaning high-temperature gases, in which the lower parts of the frames are provided with covers that can be opened during maintenance and blow out the accumulated dust from the sleeve with compressed air

Each cap is pivotally connected to a stem that passes inside the sleeve, through a bearing bush, a compensating device and is secured with a nut in the top of the frame.

The disadvantages inherent in the prototype, the design is complex, low-tech, time-consuming to manufacture; installation and operation is difficult; dust removal is possible only occasionally after stopping the filter; the axial arrangement of the stem, the support sleeve and other elements creates additional resistance to the movement of the gas and does not allow the design to be used in filters with element-by-element pulse regeneration

The aim of the invention is to improve the manufacturability, reduce the complexity of manufacturing and operating costs.

This goal is achieved by the fact that in a known filter comprising a housing, means for passing gas, filter bags with a plug at the bottom, frames and a regeneration device, the sleeve plugs are fitted with valves in the form of an elastic tube whose diameter is less than the diameter of the sleeve.

The elastic tube is made oval in cross section, removable.

The valve is equipped with a fitting to which an elastic tube is attached. The fitting has a plug connection with a plug. The fitting is made of a non-metallic material, such as plastic.

FIG. 1 shows a frontal section of the filter; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows the node I in FIG. 2, in filtering mode; in fig. 4 - the same, in the regeneration mode; in fig. 5 - bottom part of the sleeve with a removable valve.

(L

F

with about

The filter includes a housing 1 with a grill 2, a separating chamber 3 of dusty and 4 purified gases, collectors 5 of dusty gas and 6 purified gas Bunker 7. filter sleeves 8, frames 9, regeneration device 10, hatches 11 and 12, valve 13 V The lower part of the sleeve has a plug 14 (FIG. 2) and a valve 15 in the form of an elastic tube whose diameter is less than the diameter of the sleeve is, for example, 5-10% of its diameter.

With element-by-element pulse regeneration, a projecting nozzle 16 is located in the upper part of the frame. Valve 15 (FIGS. 4 and 5) can be detachable and connected, for example, with a spring ring 17 to fitting 18 (FIG. 4), having a permanent connection with a plug 14, or to fitting 19 (FIG. 5), having a detachable, for example, threaded connection with a plug.

In the latter case, the fitting and its fastening elements can be made of materials appropriate to the operating conditions, for example, of metal or plastic, and installed on existing filters with frameworks of various types — rigid or spiral.

If necessary, the valve can be given an oval shape in cross section. The removable valve can be made of various materials, such as filter materials, rubber, etc.

The filter works as follows.

The dusty gas under the influence of the vacuum created by the fan, through the collector 5 enters the chamber 3 of the dusty gas. The gas, having passed through the filter sleeves 8, the clean gas chamber 4 and the collector 6, is discharged to the atmosphere, and dust is trapped on the outer surface of the sleeves.

As the dust precipitates, the resistance to gas movement increases, so after a certain time the formed dust layer is automatically removed - regeneration.

During regeneration, electromagnetic valves are successively triggered, under the influence of the ejected gas, pressure builds up inside the sleeves, filtering material is blown and deformed, dust from the surface of the sleeves falls off into the hopper 7 and is removed through the shutter 13. Part of the purge air through the valves 15 (Fig. 2) After the regeneration, under the influence of vacuum, created in

the chamber of purified iasa, the sleeves are compressed, covering the frame (Fig. 3), the valves collapse, sealing the sleeves and preventing dust from entering the dust from the chamber. Since the diameter of the valve is substantially smaller than the diameter of the sleeve, the loss of purge air, taking into account the rapidity of regeneration (pulse) and the resistance of the valve to air pressure,

insignificant

The proposed technical solution is planned to be used in frame filters with element-by-element pulse regeneration Impulse 5.2 and Impulse 5.3.

The filter area is 90 and 120 m2, respectively, the diameter of the sleeves is 20 mm.

The proposed solution has the following advantages over the prototype: it provides

automatic removal of dust from the sleeves during operation, reduced operating costs; the design is simpler and more technological, less labor-intensive in manufacturing and installation; the possibility of using standardized valves in filters of various types; the possibility of using valves in in-use filters; possibility of use in filters with different types

skeletons (rigid or spiral) and various ways of regeneration (elementwise or chamber).

Claims (6)

Claim 1 Bag filter including body, collectors of dusty and purified gas, filter sleeves on frames with plugs in the lower part and regeneration unit, characterized in that, in order to simplify operation by ensuring automatic removal of dust from the sleeves, the filter is equipped with valves attached to the cap and made in the form of an elastic tube with a diameter smaller than the diameter of the sleeve. 2. The filter according to claim 1, characterized in that the tube is made oval in cross section. 3. Filter pop. 1, characterized in that the tube is removable. 4. The filter according to claim 1, characterized in that it is provided with a nozzle installed between the cap and the tube. 5. The filter according to claim 1, wherein the nozzle is detachably connected to the plug. 6. Filter pop 1, which differs in that the nozzle is made of non-metallic material, such as plastic. FIG. 2 fig.b Fig 5