Dust removal filter bag

Abstract

The utility model relates to the technical field of environmental protection equipment accessories, in particular to a dust removal filter bag which comprises a filter bag body, a first flange plate is fixedly mounted at the front end of the filter bag body, and a second flange plate is arranged on the front side of the first flange plate. A plurality of metal corrugated pipes which are annularly arranged at equal intervals are fixedly installed on the rear side face of the second flange plate, supporting rods are fixedly installed at the rear ends of the metal corrugated pipes, supporting rings are fixedly installed at the rear ends of the multiple supporting rods, and the metal corrugated pipes, the supporting rods and the supporting rings are all located in the filter bag body and matched with the filter bag body in an inserted mode; a conical bag body is integrally formed at the rear end part of the filter bag body, a threaded discharge pipe is fixedly mounted at the rear end part of the conical bag body, and a threaded cover is in threaded connection with the threaded discharge pipe. According to the utility model, stable supporting and angle adjusting operations can be carried out, and a better filtering treatment effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection equipment accessory technical field, specifically, relate to a dust collecting filter bag. BACKGROUND

[0002] In numerous industrial production processes, such as steel smelting, cement manufacturing, thermal power generation, etc., a large amount of waste gas containing dust particles will be generated, and if these dusts are directly discharged into the atmosphere without effective treatment, not only will it cause serious pollution to the environment and harm the ecological balance, but also will it pose a great threat to human health and cause respiratory diseases and other problems, and as a key component in the industrial dust removal system, the performance of the dust collecting filter bag directly affects the dust removal effect.

[0003] At present, the common dust collecting filter bag on the market has certain defects when in use, such as the traditional filter bag, which is generally directly installed at the corresponding air outlet part, lacks corresponding support components inside, cannot maintain the shape stability of the filter bag, is prone to collapse due to gas pressure, reduces the filtering area, and affects the filtering effect; although some dust collecting filter bags have support components inside, the support components are all straight-line structures, which cannot be adjusted in angle as needed, cannot be adjusted as needed in actual installation, and bring inconvenience to users. In view of this, we propose a dust collecting filter bag. UTILITARY MODEL CONTENTS

[0004] The utility model aims at providing a dust collecting filter bag to solve the defects proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A dust collecting filter bag, comprising a filter bag body, a first flange plate is fixedly installed at the front end of the filter bag body, a second flange plate is arranged on the front side of the first flange plate, a plurality of metal bellows arranged in a ring shape and at equal intervals are fixedly installed on the rear side of the second flange plate, a support rod is fixedly installed at the rear end of the metal bellows, a support ring is fixedly installed at the rear end of a plurality of support rods, and the metal bellows, the support rod and the support ring are all located in the filter bag body and are inserted and matched with the filter bag body.

[0007] Preferably, a conical bag body is integrally formed at the rear end of the filter bag body, a threaded discharge pipe is fixedly installed at the rear end of the conical bag body, and a threaded cover is threadedly connected to the threaded discharge pipe.

[0008] Preferably, an anti-skid layer is arranged on the surface of the threaded cover, and the inner diameter of the threaded discharge pipe is between 5cm and 8cm.

[0009] Preferably, a first sealing ring is embedded on the front side of the first flange plate, and a second sealing ring is embedded on the front side of the second flange plate.

[0010] Preferably, a guide hole is arranged on the first flange plate, and a positioning column is fixedly installed on the rear side of the second flange plate, and the positioning column is insertedly matched with the guide hole.

[0011] Preferably, the size of the positioning column is matched with the size of the guide hole, and the sizes of the first flange plate and the second flange plate are the same.

[0012] Preferably, the filter bag body and the conical bag body are composed of a base cloth layer arranged at the innermost layer and a protective layer arranged at the outermost layer, and a filter layer is arranged between the base cloth layer and the protective layer.

[0013] Preferably, the length of the metal bellows is between 30cm and 50cm, and the support ring is annular.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The utility model discloses a filter bag body with a first flange plate, which is matched with a second flange plate, annular metal bellows arranged at equal intervals, support rods and support rings connected with the second flange plate, to realize effective support of the filter bag body, prevent it from collapsing due to gas pressure during work and guarantee filtering effect.

[0016] 2. The utility model discloses a conical bag body, a threaded discharge pipe and a threaded cover, which facilitate collection and cleaning of filtered dust, first and second sealing rings ensure the sealing of the flange plate connection and prevent gas leakage, the insertion matching of the positioning column and the guide hole facilitates accurate installation of the two flange plates, and the filter bag body and the conical bag body composed of a base cloth layer, a filter layer and a protective layer improve filtering precision, wear resistance and durability of the filter bag. DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is an explosion structure schematic view of the utility model;

[0019] Figure 3 It is an enlarged view of A in the utility model; Figure 2

[0020] Figure 4 It is a sectional view of the filter bag body of the utility model;​

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Filter bag body; 10. Conical bag body; 11. Threaded discharge pipe; 12. Threaded cap; 121. Anti-slip layer; 13. First flange; 131. First sealing ring; 14. Guide hole; 15. Base fabric layer; 16. Filter layer; 17. Protective layer;

[0023] 2. Second flange; 20. Second sealing ring; 21. Positioning post; 22. Metal bellows; 23. Support rod; 24. Support ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution: a dust removal filter bag, including a filter bag body 1, a first flange 13 fixedly installed at the front end of the filter bag body 1, a second flange 2 provided on the front side of the first flange 13, and the first flange 13 and the second flange 2 are fixedly installed together on the pipe of the external equipment.

[0026] Specifically, multiple metal bellows 22 arranged in a ring at equal intervals are fixedly installed on the rear side of the second flange 2. Support rods 23 are fixedly installed at the rear ends of the metal bellows 22, and support rings 24 are fixedly installed at the rear ends of the multiple support rods 23. The metal bellows 22, support rods 23 and support rings 24 are all located inside the filter bag body 1 and are inserted and matched with the filter bag body 1 to support the filter bag body 1, prevent the filter bag body 1 from collapsing due to gas pressure, maintain the stability of the filter bag shape and ensure the filtration effect.

[0027] In this embodiment, a conical bag body 10 is integrally formed at the rear end of the filter bag body 1. A threaded discharge pipe 11 is fixedly installed at the rear end of the conical bag body 10. The inner diameter of the threaded discharge pipe 11 is between 5cm and 8cm. A threaded cap 12 is threadedly connected to the threaded discharge pipe 11, so that during the dust removal process, the filtered dust can be concentrated at the threaded discharge pipe 11 along the conical structure of the conical bag body 10. When it is necessary to clean the dust, the threaded cap 12 can be unscrewed to easily discharge the dust, which improves the convenience of dust cleaning. An anti-slip layer 121 is provided on the surface of the threaded cap 12 to increase the friction when screwing the threaded cap 12, making it easy to operate and avoiding difficulty in screwing due to slipping hands.

[0028] Specifically, a first sealing ring 131 is embedded on the front side of the first flange 13, and a second sealing ring 20 is embedded on the front side of the second flange 2, so that the connection between the two flanges has good sealing performance, effectively preventing gas leakage and ensuring the normal operation of the dust removal system.

[0029] Furthermore, the first flange 13 is provided with a guide hole 14, and a positioning post 21 is fixedly installed on the rear side of the second flange 2. The positioning post 21 and the guide hole 14 are inserted into each other. The size of the positioning post 21 is adapted to the size of the guide hole 14. The first flange 13 and the second flange 2 are the same size, which enables precise positioning during installation, facilitates and speeds up the connection operation, and improves installation efficiency.

[0030] In addition, the length of the metal corrugated tube 22 is between 30cm and 50cm, and the support ring 24 is annular, so that these internal support structures can provide stable support for the filter bag body 1.

[0031] It is worth noting that both the filter bag body 1 and the conical bag body 10 are composed of an innermost base fabric layer 15 and an outermost protective layer 17, with a filter layer 16 positioned between the base fabric layer 15 and the protective layer 17. The base fabric layer 15 can be made of high-strength, corrosion-resistant polyester fiber, providing basic structural support for the filter bag and ensuring that it will not deform or break under stress during use. The filter layer 16 can be made of a mixture of nanofiber membrane and high-performance fibers. The nanofiber membrane has extremely high specific surface area and porosity, effectively intercepting fine dust particles with a diameter between 0.1 and 10 micrometers, achieving a filtration efficiency of over 99.9%. High-performance fibers, such as aramid fibers, have excellent wear resistance and high-temperature resistance, enhancing the overall strength and durability of the filter bag. The protective layer 17 can be treated with a polytetrafluoroethylene (PTFE) coating, which has good chemical stability, water resistance, and oil resistance, preventing dust from adhering to the filter bag surface and reducing wear during subsequent use.

[0032] When using the dust collector filter bag of this utility model, align the first flange 13 at the front end of the filter bag body 1 with the second flange 2, insert the positioning post 21 on the rear side of the second flange 2 into the guide hole 14 on the first flange 13 for quick and accurate positioning, and then fix the first and second flanges together on the external equipment pipeline.

[0033] After installation, the filter bag 1 is put into use. Dust-laden gas enters the filter bag 1 through the pipe. The internal metal corrugated pipe 22, support rod 23 and support ring 24 support the filter bag 1. Dust is intercepted inside the filter bag 1, and air is discharged outward through the filter bag 1. In addition, the metal corrugated pipe 22 can be bent. At this time, as the metal corrugated pipe 22 bends, the shape of the filter bag 1 also changes, so as to adjust the orientation.

[0034] When dust needs to be cleaned, unscrew the threaded cap 12, and let the dust in the filter bag 1 gather towards the conical bag 10. Finally, it is discharged from the threaded discharge pipe 11 to complete the cleaning work.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust collector filter bag, comprising a filter bag body (1), characterized in that: A first flange (13) is fixedly installed at the front end of the filter bag body (1). A second flange (2) is provided on the front side of the first flange (13). A plurality of metal corrugated tubes (22) arranged in a ring at equal intervals are fixedly installed on the rear side of the second flange (2). A support rod (23) is fixedly installed at the rear end of the metal corrugated tube (22). A support ring (24) is fixedly installed at the rear end of the plurality of support rods (23). The metal corrugated tubes (22), the support rods (23) and the support rings (24) are all located inside the filter bag body (1) and are inserted into the filter bag body (1).

2. The dust collector filter bag according to claim 1, characterized in that: The rear end of the filter bag (1) is integrally formed with a conical bag body (10), and a threaded discharge pipe (11) is fixedly installed on the rear end of the conical bag body (10). A threaded cap (12) is threadedly connected to the threaded discharge pipe (11).

3. The dust collector filter bag according to claim 2, characterized in that: The threaded cap (12) has an anti-slip layer (121) on its surface, and the inner diameter of the threaded discharge pipe (11) is between 5cm and 8cm.

4. The dust collector filter bag according to claim 1, characterized in that: A first sealing ring (131) is embedded on the front side of the first flange (13), and a second sealing ring (20) is embedded on the front side of the second flange (2).

5. The dust collector filter bag according to claim 1, characterized in that: The first flange (13) is provided with a guide hole (14), and a positioning post (21) is fixedly installed on the rear side of the second flange (2). The positioning post (21) and the guide hole (14) are inserted into each other.

6. The dust collector filter bag according to claim 5, characterized in that: The dimensions of the positioning pin (21) are adapted to the dimensions of the guide hole (14), and the dimensions of the first flange (13) and the second flange (2) are the same.

7. The dust collector filter bag according to claim 2, characterized in that: Both the filter bag (1) and the conical bag (10) are composed of a base fabric layer (15) disposed on the innermost layer and a protective layer (17) disposed on the outermost layer, with a filter layer (16) disposed between the base fabric layer (15) and the protective layer (17).

8. The dust collector filter bag according to claim 1, characterized in that: The length of the metal corrugated pipe (22) is between 30cm and 50cm, and the support ring (24) is annular.

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