Flexible filter bag construction for pulse dust collector

Abstract

The utility model discloses a flexible filter bag structure of pulse dust collector belongs to dust collector filter bag technical field. A flexible filter bag structure of pulse dust collector, including filter bag body and filter bag frame, the filter bag frame includes installation ring, support rod and arc support plate, and the equidistance of installation ring is provided with support rod, and support rod is connected with arc support plate, and the upper end of filter bag body is provided with the bag mouth ring fixed with installation ring. The utility model discloses a flexible filter bag structure of pulse dust collector sets up flexible support ring in the inside of filter bag body, forms multiple constraint to the radial of filter bag body, and utilizes the arc support plate on support rod and position limiting to flexible support ring, and the contact position of filter bag body and support rod is relatively fixed to the whole inflation of pulse is decomposed into multiple local deformation, and the mechanical impact of filter bag material is reduced when cleaning ash, and fiber fatigue and seam crack are prevented.

Description

Technical Field

[0001] This utility model relates to the field of dust collector filter bag technology, and more specifically, to a flexible filter bag structure for a pulse dust collector. Background Technology

[0002] The filter bag structure is a key component of a bag pulse dust collector. Chinese patent CN216320614U discloses a bag pulse dust collector with a filter bag structure including a filter bag frame and a filter bag fitted outside the filter bag frame. During dust removal, the filter bag expands instantly, generating a huge and concentrated impact force, which can easily lead to fatigue damage to the filter bag fibers, especially in weak areas such as seams, thus shortening the service life of the filter bag. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a flexible filter bag structure for a pulse dust collector to solve the above-mentioned deficiencies.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] This utility model discloses a flexible filter bag structure for a pulse dust collector, comprising a filter bag body and a filter bag frame. The filter bag frame includes an mounting ring, support rods, and an arc-shaped support plate. Support rods are evenly spaced on the mounting ring and connected to the arc-shaped support plate. A bag opening ring fixed to the mounting ring is provided at the upper end of the filter bag body. Flexible support rings are fixedly arranged inside the filter bag body at intervals along its axial direction and overlap with the arc-shaped support plate.

[0006] Preferably, the diameter of the flexible support ring in its natural state is smaller than the diameter of the filter bag body, and the flexible support ring is made of a polypropylene plastic strip with elasticity and shape memory function.

[0007] Preferably, the arc-shaped support plate is fixed to the support rod with a staggered position along the axial direction of the filter bag frame. Two arc-shaped support plates at the same height are symmetrically arranged, and the centers of the two arc-shaped support plates are located at the same position and together form a discontinuous circular structure. The maximum diameter of the circular structure is not greater than the natural diameter of the flexible support ring.

[0008] Preferably, the lower surface of the arc-shaped support plate has a smooth arc structure.

[0009] Preferably, the lower ends of the support rods are connected to a lower fixing ring.

[0010] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0011] This invention incorporates a flexible support ring inside the filter bag body, creating multiple radial constraints on the filter bag body. An arc-shaped support plate on the support rod further limits the flexible support ring, relatively fixing the contact position between the filter bag body and the support rod. This decomposes the overall pulse expansion into multiple localized deformations, reducing the mechanical impact on the filter bag material during cleaning, preventing fiber fatigue and seam cracking, and extending the filter bag's service life. The resulting wave-shaped cleaning method allows cleaning to be transmitted from top to bottom along the entire length of the filter bag, overcoming the weakness of lower cleaning force in traditional cleaning methods and preventing localized dust accumulation. The arc-shaped support plate provides installation limits for the flexible support ring and its curved design makes filter bag installation and replacement simple and quick, improving maintenance efficiency. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the flexible filter bag structure of the pulse dust collector of this utility model;

[0013] Figure 2 This is a diagram showing the internal structure of the flexible filter bag of the pulse dust collector of this utility model;

[0014] Figure 3 For the present utility model Figure 2 Exploded view;

[0015] Figure 4 This is an enlarged view of section A of this utility model.

[0016] In the figure: 1. Filter bag body; 11. Bag opening ring; 12. Flexible support ring; 2. Filter bag frame; 21. Mounting ring; 22. Support rod; 221. Lower fixing ring; 23. Arc-shaped support plate; 231. Arc-shaped structure. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0018] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0019] Combination Figures 1-4The present invention discloses a flexible filter bag structure for a pulse dust collector, comprising a filter bag body 1 and a filter bag frame 2. The filter bag body 1 is fitted over the filter bag frame 2. The filter bag frame 2 includes a mounting ring 21 and support rods 22. The support rods 22 are evenly spaced on the inner ring of the mounting ring 21. The lower end of the support rods 22 is connected to a lower fixing ring 221 to improve the stability of the support rods 22. The upper end of the filter bag body 1 is provided with a bag opening ring 11, which is fixed to the mounting ring 21 by bolts.

[0020] Specifically, flexible support rings 12 are evenly spaced inside the filter bag body 1. The diameter of the flexible support rings 12 is smaller than the diameter of the filter bag body 1. When the filter bag body 1 is inflated, the flexible support rings 12 provide radial restraint. The flexible support rings 12 are made of polypropylene plastic strips with elasticity and shape memory function. The portion of the filter bag body 1 between two adjacent flexible support rings 12 forms a flexible pleated section. In natural filtration, the filter bag body 1 is fitted onto the filter bag frame 2, and the flexible support rings 12 are in contact with the filter bag frame 2. The flexible pleated sections provide support, while the flexible pleated sections are in a pleated state. When the pulse cleaning starts, the high-pressure airflow enters from the top of the filter bag body 1. Due to the action of the flexible support ring 12, the airflow cannot make the entire filter bag body 1 inflate uniformly in an instant. Instead, it blows each flexible pleated section in turn from top to bottom. The upper flexible pleated sections are blown in first, and then the airflow is passed to the middle and lower flexible pleated sections in turn, forming a wave-shaped shaking from top to bottom. This produces a gentle peeling effect on the dust adhering to the surface of the filter bag body 1, avoiding clogging of the filter bag body 1.

[0021] It should be noted that the filter bag frame 2 also includes an arc-shaped support plate 23. The support rods 22 form a cylindrical structure. The arc-shaped support plate 23 is offset along the axial direction of the cylindrical structure. Two arc-shaped support plates 23 are symmetrically arranged at the same height of the cylindrical structure, and the centers of the two arc-shaped support plates 23 are at the same position, forming a non-continuous circular structure. The maximum diameter of this circular structure is not greater than the maximum diameter of the flexible support ring 12, so that after the filter bag body 1 is installed, the flexible support ring 12 can fall on the arc-shaped support plate 23, and the arc-shaped support plate 23 supports the flexible support ring 12 and limits the distance between the flexible support rings 12.

[0022] More specifically, the lower surface of the arc-shaped support plate 23 is a smooth arc structure 231. When the filter bag body 1 is lifted upward from the lower end of the support rod 22, the flexible support ring 12 moves from below the arc-shaped support plate 23 to above the arc-shaped support plate 23. During this process, the flexible support ring 12 deforms. Because the circular structure formed by the arc-shaped support plate 23 is discontinuous, the flexible support ring 12 can be flattened along one of its diameter directions to pass through the circular structure formed by the arc-shaped support plate 23. The arc structure 231 accelerates the passage of the flexible support ring 12 through the arc-shaped support plate 23, improving the ease of installation. In addition, the staggered setting of the arc structure 231 can strengthen the connection strength between the support rods 22, and at the same time prevent the flexible support ring 12 from falling off the arc support plate 23 due to the compression of the wind direction.

[0023] Working process: The filter bag body 1 is put on from the bottom of the filter bag frame 2. During the installation process, the flexible support ring 12 will come into contact with the arc-shaped support plate 23. When the flexible support ring 12 is squeezed, it undergoes elastic deformation, thus allowing it to slide smoothly over the arc-shaped support plate 23. After all the flexible support rings 12 are installed in place, the arc-shaped support plate 23 supports the corresponding flexible support ring 12. The filter bag body 1 between adjacent flexible support rings 12 naturally presents a wrinkled state due to the excess material. The bag opening ring 11 is fixed to the mounting ring 21 with bolts to complete the installation. When dust removal is required, the pulse valve is opened, and a high-pressure, short burst of compressed air is injected from the top of the filter bag. After the airflow enters, due to the constraint of the flexible support ring 12, the filter bag body 1 cannot inflate significantly. Therefore, the energy of the airflow is directed to the unconstrained flexible pleated section. The flexible pleated section is blown in sequence under the action of air pressure, forming a wave-like vibration, which peels off the dust layer on the surface of the filter bag body 1.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A flexible filter bag structure for a pulse dust collector, comprising a filter bag body (1) and a filter bag frame (2), characterized in that, The filter bag frame (2) includes an mounting ring (21), a support rod (22) and an arc-shaped support plate (23). The mounting ring (21) is provided with support rods (22) at equal intervals. The support rods (22) are connected to the arc-shaped support plate (23). The upper end of the filter bag body (1) is provided with a bag mouth ring (11) fixed to the mounting ring (21). The filter bag body (1) is fixedly provided with flexible support rings (12) distributed at intervals along its axial direction. The flexible support rings (12) overlap with the arc-shaped support plate (23).

2. The flexible filter bag structure of the pulse dust collector according to claim 1, characterized in that, The diameter of the flexible support ring (12) in its natural state is smaller than the diameter of the filter bag body (1).

3. The flexible filter bag structure of the pulse dust collector according to claim 1, characterized in that, The arc-shaped support plate (23) is fixed to the support rod (22) with a misalignment along the axial direction of the filter bag frame (2). The two arc-shaped support plates (23) at the same height are symmetrically arranged, and the centers of the two arc-shaped support plates (23) are located at the same position and together form a non-continuous circular structure. The maximum diameter of the circular structure is not greater than the natural diameter of the flexible support ring (12).

4. The flexible filter bag structure of the pulse dust collector according to claim 1, characterized in that, The lower surface of the arc-shaped support plate (23) is a smooth arc structure (231).

5. The flexible filter bag structure of the pulse dust collector according to claim 1, characterized in that, The lower end of the support rod (22) is connected to a lower fixing ring (221).

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