CN216653792U

CN216653792U - Collecting cover of bag-type dust collector

Info

Publication number: CN216653792U
Application number: CN202123417939.2U
Authority: CN
Inventors: 罗新生; 陈建明; 衡红; 李福�
Original assignee: Sichuan Desheng Group Vanadium Titanium Co Ltd
Current assignee: Sichuan Desheng Group Vanadium Titanium Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-03
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a collecting cover of a bag-type dust collector, which comprises a framework and a filter bag sleeved outside the framework, wherein the lower end of the filter bag is a sealing end, and the upper end of the filter bag is an opening end; the filter bag is provided with a plurality of folds arranged along the length direction of the filter bag, the folds comprise inward-concave fold valleys and outward-convex fold peaks, and the fold valleys and the fold peaks between every two adjacent folds are distributed in a staggered manner and are connected in sequence; the collecting cover further comprises an annular uniform folding device, the outer portion of the filter bag is sleeved with the uniform folding device, the inner side of the uniform folding device is provided with a clamping portion matched with the folds on the filter bag, and the clamping portion is used for supporting the shapes of the folds. The uniform folding device supports the folds of the filter bag, so that the surface of the filter bag has a larger adsorption area, the filtering area of dust is increased, and excessive emission is reduced; meanwhile, the filter area of the surface of the filter bag is increased by the folds, so that the filtering wind speed is reduced, the gravity settling effect of the dust-containing smoke is improved, more dust can be in contact with the filter bag for a longer time, and the filtering effect is enhanced.

Description

Collecting cover of bag-type dust collector

Technical Field

The utility model relates to a tail gas filtering device, in particular to a collecting cover of a bag-type dust collector.

Background

The desulfurized tail gas in the molten iron steelmaking process contains a large amount of dust, and the direct discharge of the dust can affect the atmospheric environment, so that the tail gas must be filtered before being discharged. However, no professional and effective solution exists in the current treatment of tail gas after desulfurization, and in order to protect the environment, a technology matched with the method is urgently needed to be developed, and a bag-type dust collector is used in our factory, and the working principle is as follows: when the dust-containing gas enters the dust hopper from the lower part of the box body during working, as the cross section area of the gas flow is suddenly enlarged and the flow speed is reduced, a part of dust particles with coarse particles and high density in the gas flow are settled in the dust hopper under the action of gravity; after dust particles with fine particle size and small density enter the bag filter chamber, the dust is settled on the surface of the filter bag through comprehensive effects of inertia, collision, screening, interception, static electricity and the like on the surface of the filter bag to form a dust layer. The purified gas enters the gas purifying chamber and is discharged by the fan through the exhaust pipe. The resistance value of the bag-type dust collector increases along with the thickness increase of the dust layer on the surface of the filter bag. The cloth bag is flat in surface, the contact area of the cloth bag and tail gas is not large enough, dust is easily accumulated, the filtering effect is poor, and after the cloth bag is used for a long time, macroscopic white dust can be collected, so that the filtering effect is influenced, and the serious standard exceeding of emission is caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a collecting cover of a bag-type dust collector, which aims to solve the problems of small contact area and poor filtering effect of the collecting cover of the bag-type dust collector in the prior art.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a collecting cover of a bag-type dust collector comprises a framework and a filter bag sleeved outside the framework, wherein the lower end of the filter bag is a sealing end, and the upper end of the filter bag is an opening end; the filter bag is provided with a plurality of folds arranged along the length direction of the filter bag, the folds comprise inward concave fold valleys and outward convex fold peaks, and the fold valleys and the fold peaks between every two adjacent folds are distributed in a staggered mode and are connected in sequence; the collecting cover further comprises an annular uniform folding device, the uniform folding device is sleeved outside the filter bag, the inner side of the uniform folding device is provided with a clamping portion matched with the folds on the filter bag, and the clamping portion is used for supporting the shapes of the folds.

As a further technical scheme of the scheme, the folding equalizer is made of elastic materials.

As a further technical scheme of the above scheme, the collecting cover further comprises a lower end cover and an upper end cover, wherein the lower end cover is fixedly connected to the sealing end of the filter bag; the upper end cover is fixedly connected to the opening end of the filter bag, and is provided with a vent hole.

As a further technical solution of the above solution, the collecting cover further includes an expansion plug, the expansion plug includes a cylindrical supporting cylinder and a vent cylinder with a diameter gradually increasing from bottom to top, and the vent cylinder is located in the supporting cylinder; the upper end cover is provided with a groove for accommodating the support cylinder, and the lower end of the vent cylinder is matched with the vent hole of the upper end cover.

As a further technical solution of the above aspect, the support cylinder and the breather cylinder are integrally formed.

As a further technical solution of the above scheme, the support cylinder is interference-fitted with the groove of the upper end cover.

In summary, compared with the prior art, the utility model has the following advantages and beneficial effects: the uniform folding device supports the folds of the filter bag, so that the surface of the filter bag has a larger adsorption area, the filtering area of dust is increased, and excessive emission is reduced; meanwhile, the filter area of the surface of the filter bag is increased by the folds, so that the filtering wind speed is reduced, the gravity settling effect of the dust-containing smoke is improved, more dust can be in contact with the filter bag for a longer time, and the filtering effect is enhanced.

Drawings

FIG. 1 is a schematic view of a half-section structure of the present invention.

Fig. 2 is a schematic view of an assembly structure of the expansion plug and the upper end cover in the utility model.

FIG. 3 is a schematic structural diagram of the homodyne of the present invention.

The explanation of each reference number in the figure is: the filter comprises an expansion plug 1, an upper end cover 2, a filter bag 3, a framework 4, a uniform folding device 5 and a lower end cover 6.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The terms first, second and the like, if any, are used for distinguishing technical features only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1, the collecting cover of the bag-type dust collector of the utility model comprises a framework 4 and a filter bag 3 sleeved outside the framework 4, wherein the lower end of the filter bag 3 is a sealing end, and the upper end is an opening end; the filter bag 3 is provided with a plurality of folds arranged along the length direction of the filter bag, the folds comprise inward-concave fold valleys and outward-convex fold peaks, and the fold valleys and the fold peaks between every two adjacent folds are distributed in a staggered manner and are connected in sequence; the collecting cover further comprises an annular uniform folding device 5, the filter bag 3 is sleeved with the uniform folding device 5, the inner side of the uniform folding device 5 is provided with a clamping portion matched with the folds on the filter bag 3, and the clamping portion is used for supporting the shapes of the folds. The filter bag has the advantages that the folds of the filter bag 3 are supported by the uniform folding device 5, so that the surface of the filter bag 3 has a larger adsorption area, the filtering area of dust is increased, and excessive discharge is reduced; meanwhile, the filter area of the surface of the filter bag 3 is increased by the folds, so that the filtering wind speed is reduced, the gravity settling effect of the dust-containing flue gas is increased, more dust can be in contact with the filter bag 3 for a longer time, and the filtering effect is enhanced.

The frame 4 can be made of stainless steel or other high-hardness material and is supported in the filter bag 3 to maintain the overall contour of the filter bag 3.

The uniform folding device 5 is made of elastic material so as to be convenient for sleeving the uniform folding device 5 on the filter bag 3.

The collecting cover further comprises a lower end cover 6 and an upper end cover 2, and the lower end cover 6 is fixedly connected to the sealing end of the filter bag 3; the upper end cover 2 is fixedly connected to the opening end of the filter bag 3, and the upper end cover 2 is provided with a vent. The lower end cover 6 and the upper end cover 2 are clamped on the framework 4 and used for fixing two ends of the filter bag 3, so that the shape of the whole filter bag 3 is more regular. The filtered air is discharged through the air vents.

The collecting cover further comprises an expansion plug 1, the expansion plug 1 comprises a cylindrical supporting cylinder and a ventilating cylinder with the diameter gradually increasing from bottom to top, and the ventilating cylinder is positioned in the supporting cylinder; the upper end cover 2 is provided with a groove for accommodating the supporting cylinder, and the lower end of the vent cylinder is matched with the vent hole of the upper end cover 2. Because the upper end of the filter bag 3 is the open end, the shape outline of the upper end of the filter bag 3 is ensured by designing the expansion plug 1 in the embodiment of the application, and the expansion plug 1 is assembled on the upper end cover 2 so as to support and clamp the shape of the upper end of the filter bag 3. After the air filter is assembled in place, the vent cylinder of the expansion plug 1 is matched with the vent hole of the upper end cover 2, and filtered air is discharged outwards through the vent cylinder.

The support cylinder and the vent cylinder are integrally formed to improve structural strength.

The supporting cylinder is in interference fit with the groove of the upper end cover 2 so as to prevent dust from entering the filter bag 3 from the connection position. And moreover, a flexible cementing substance can be additionally arranged at the joint to enhance the tightness and reduce the dust accumulation.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above preferred embodiments should not be considered as limiting the utility model, which is subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.

Claims

1. The utility model provides a collection cover of sack cleaner which characterized in that: the filter bag comprises a framework (4) and a filter bag (3) sleeved outside the framework (4), wherein the lower end of the filter bag (3) is a sealed end, and the upper end of the filter bag is an open end; the filter bag (3) is provided with a plurality of folds arranged along the length direction of the filter bag, the folds comprise inward concave fold valleys and outward convex fold peaks, and the fold valleys and the fold peaks between every two adjacent folds are distributed in a staggered manner and are connected in sequence; the collecting cover further comprises an annular uniform folding device (5), the filter bag (3) is sleeved with the uniform folding device (5), the inner side of the uniform folding device (5) is provided with a clamping portion matched with the folds on the filter bag (3), and the clamping portion is used for supporting the shapes of the folds.

2. The collecting cover of a bag-type dust collector as set forth in claim 1, wherein: the uniform folding device (5) is made of elastic materials.

3. The collecting cover of a bag-type dust collector as set forth in claim 1, wherein: the collecting cover further comprises a lower end cover (6) and an upper end cover (2), and the lower end cover (6) is fixedly connected to the sealing end of the filter bag (3); the upper end cover (2) is fixedly connected to the opening end of the filter bag (3), and the upper end cover (2) is provided with a vent.

4. A collecting cover for a bag-type dust collector as claimed in claim 3, wherein: the collecting cover further comprises an expansion plug (1), the expansion plug (1) comprises a cylindrical supporting cylinder and a ventilating cylinder with the diameter gradually increasing from bottom to top, and the ventilating cylinder is positioned in the supporting cylinder; the upper end cover (2) is provided with a groove for accommodating the supporting cylinder, and the lower end of the vent cylinder is matched with the vent hole of the upper end cover (2).

5. The collecting cover of a bag-type dust collector as set forth in claim 4, wherein: the support cylinder and the breather cylinder are integrally formed.

6. The collecting cover of a bag-type dust collector according to claim 4, wherein: the supporting cylinder is in interference fit with the groove of the upper end cover (2).