Filter bag convenient to replace

Abstract

The utility model belongs to the field of filter bags, and particularly relates to a filter bag convenient to replace, which comprises a fixing frame symmetrically provided with clamping grooves, an L-shaped traction plate is mounted in the clamping grooves of the fixing frame, and a cage skeleton is mounted on the fixing frame; the outer wall of the cage framework is sleeved with filter cloth, and the two ends of the filter cloth are embedded into the clamping grooves of the fixing frame; the air bag mechanism comprises air bag pieces arranged in the fixing frame at intervals, ventilation partition plates used for ventilation are installed between the adjacent air bag pieces, and ventilation valves penetrating through the front end of the fixing frame are installed on the air bag pieces. Screw holes are symmetrically formed in the fixing frame and the traction plate; when the filter bag is damaged, the damaged filter cloth can be detached from the cage skeleton, the two ends of the new filter cloth are respectively placed in the clamping grooves formed in the fixing frame, the replaced filter cloth is stably fixed on the outer side of the cage skeleton, a traditional cage skeleton internal fixing structure is replaced by the fixing frame, external fixation of the filter cloth is realized, and the filter cloth is convenient to detach and replace when being damaged.

Description

Technical Field

[0001] The utility model relates to the field of filter bags, in particular to a filter bag which is convenient to replace. Background Art

[0002] The filter bag is a key part of the operation of the bag filter. Usually, the cylindrical filter bag is suspended vertically in the dust collector. The fabric and design of the filter bag should strive for high-efficiency filtration, easy dust removal and durability. In pulse and air box pulse dust collectors, dust is attached to the outer surface of the filter bag. When the dust-laden gas passes through the dust collector, the dust is captured on the outer surface of the filter bag, and the clean gas enters the filter bag through the filter material. The cage inside the filter bag is used to support the filter bag to prevent the filter bag from collapsing, and it also helps to remove and redistribute the dust cake.

[0003] The existing filter bag is an integrated structure made of filter cloth fixed on a cage frame. When the filter cloth is damaged, the filter cloth and the cage frame need to be replaced as a whole. However, the cage frame is mostly a metal structure and is less susceptible to damage. Direct replacement of the entire bag has the problem of excessively high consumable costs. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In order to solve the technical problems existing in the background technology, the utility model provides a filter bag which is easy to replace and has the characteristics of a split design to facilitate the replacement of damaged filter cloth.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a filter bag that is easy to replace, including a fixing frame with symmetrically arranged clamping grooves, a traction plate with an "L-shaped" structure is installed in the clamping groove of the fixing frame, and a cage frame is installed on the fixing frame;

[0008] The outer wall of the cage frame is sleeved with a filter cloth, and both ends of the filter cloth are embedded in the clamping grooves of the fixing frame;

[0009] The airbag mechanism comprises airbag components arranged at intervals in the fixing frame, a ventilation baffle for ventilation is installed between adjacent airbag components, and a ventilation valve penetrating the front end of the fixing frame is installed on the airbag component;

[0010] The fixing frame and the pulling plate are symmetrically provided with screw holes, and bolts are screwed into the screw holes.

[0011] Preferably, the cage frame includes support rings and vertical rods, the support rings are stacked on the fixing frame, and a plurality of support rings are connected by vertical rods.

[0012] Preferably, a section of the filter cloth penetrating into the clamping groove of the fixing frame is bent into a "U-shaped" structure.

[0013] Preferably, the airbag component is a deformable component, and the outer wall is attached to the filter cloth bent into a "U-shaped" structure.

[0014] Preferably, an upper sealing ring frame is provided on the upper part of the filter cloth and the fixing frame, a clamping plate sleeved on the outer wall of the filter cloth and the fixing frame is installed at the bottom of the upper sealing ring frame, and a through interface seat is installed at the top.

[0015] Preferably, a lower sealing ring frame is provided below the filter cloth and the fixing frame, and the lower sealing ring frame is a closed structure.

[0016] The above-mentioned technical scheme of the utility model has the following beneficial technical effects: when the filter bag is damaged, the damaged filter cloth can be removed from the cage frame, and the two ends of the new filter cloth can be respectively placed in the clamping grooves opened on the fixing frame, and the replaced filter cloth is stably fixed on the outside of the cage frame. The setting of the fixing frame replaces the traditional internal fixing structure of the cage frame, thereby realizing external fixation of the filter cloth, and facilitating the disassembly and replacement of the filter cloth when it is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic diagram of the separation structure of the utility model;

[0019] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0020] Reference numerals:

[0021] 11. Fixing frame; 12. Pulling plate; 13. Cage frame; 2. Filter cloth; 31. Ventilation valve; 32. Airbag component; 33. Ventilation baffle; 4. Bolt component; 51. Upper sealing ring frame; 52. Interface seat; 53. Clamping plate; 6. Lower sealing ring frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0023] like Figure 1-3 As shown, the utility model provides a filter bag that is easy to replace, including a fixing frame 11 with symmetrically provided clamping grooves, a traction plate 12 with an "L-shaped" structure is installed in the clamping groove of the fixing frame 11, and a cage frame 13 is installed on the fixing frame 11;

[0024] The outer wall of the cage frame 13 is sleeved with a filter cloth 2, and both ends of the filter cloth 2 are embedded in the clamping grooves of the fixing frame 11;

[0025] The airbag mechanism includes airbag components 32 arranged at intervals in the fixing frame 11, a ventilation baffle 33 for ventilation is installed between adjacent airbag components 32, and a ventilation valve 31 penetrating the front end of the fixing frame 11 is installed on the airbag component 32;

[0026] The fixing frame 11 and the pulling plate 12 are symmetrically provided with screw holes, and bolt members 4 are screwed into the screw holes.

[0027] It should be noted that the cage frame 13 includes support rings and vertical rods, the support rings are stacked on the fixing frame 11, and several support rings are connected by vertical rods; different from the traditional support structure in which the support rings and vertical rods are matched, the support rings and vertical rods are combined into a whole through the fixing frame 11 to assist in fixing the filter cloth 2 on the fixing frame 11.

[0028] In this embodiment, when the filter bag is damaged, the damaged filter cloth 2 can be removed from the cage frame 13, and the two ends of the new filter cloth 2 can be respectively placed in the clamping grooves opened on the fixing frame 11. Because the traction plate 12 is an "L-shaped" structure, the section of the filter cloth 2 that penetrates the clamping groove of the fixing frame 11 is bent into a "U-shaped" structure, and the two ends of the filter cloth 2 are stably placed in the clamping groove, and the filter cloth 2 is pre-fixed in the clamping groove cavity by the airbag mechanism, and the airbag part 32 is inflated through the ventilation valve 31. The airbag part 32 is a deformable part, and The outer wall is attached to the filter cloth 2 bent into a "U-shaped" structure. Under the transmission of gas in the ventilation baffle 33, each airbag component 32 is provided with an edge end face that expands and extends the filter cloth 2. Subsequently, the bolt component 4 is pushed into the thread in the screw hole to penetrate the filter cloth 2 for secondary reinforcement, and the replaced filter cloth 2 is stably fixed on the outside of the cage frame 13. The setting of the fixing frame 11 replaces the traditional internal fixing structure of the cage frame 13, thereby realizing external fixation of the filter cloth 2, which is convenient for disassembly and replacement of the filter cloth when it is damaged.

[0029] In order to fix the upper part of the filter bag, an upper sealing ring frame 51 is further provided on the upper part of the filter cloth 2 and the fixing frame 11, and a clamping plate 53 is installed at the bottom of the upper sealing ring frame 51 and is sleeved on the outer wall of the filter cloth 2 and the fixing frame 11, and a through interface seat 52 is installed on the top. When the upper sealing ring frame 51 is pressed down, the annular cavity surrounded by the raised clamping plate 53 cooperates with the cage frame 13 to stably clamp the filter cloth 2 in the interlayer to fix the upper part, and the through interface seat 52 can be connected to an external dust removal equipment to discharge the filtered medium.

[0030] In order to fix the lower part of the filter bag, a lower sealing ring frame 6 is provided below the filter cloth 2 and the fixing frame 11. The fixing structure is used in the same way as the upper sealing ring frame 51, except that the lower sealing ring frame 6 is a closed structure.

[0031] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A filter bag that is easy to replace, characterized in that: It comprises a fixing frame (11) with symmetrically arranged clamping grooves, a traction plate (12) with an "L-shaped" structure is installed in the clamping groove of the fixing frame (11), and a cage frame (13) is installed on the fixing frame (11); The outer wall of the cage frame (13) is sleeved with a filter cloth (2), and both ends of the filter cloth (2) are embedded in the clamping grooves of the fixing frame (11); The airbag mechanism comprises airbag components (32) arranged at intervals in the fixing frame (11), a ventilation baffle (33) for ventilation is installed between adjacent airbag components (32), and a ventilation valve (31) penetrating the front end of the fixing frame (11) is installed on the airbag component (32); The fixing frame (11) and the pulling plate (12) are symmetrically provided with screw holes, and bolt members (4) are screwed into the screw holes.

2. The filter bag that is easy to replace according to claim 1, characterized in that: The cage frame (13) comprises a support ring and a vertical rod. The support rings are stacked on the fixing frame (11), and a plurality of support rings are connected by vertical rods.

3. The filter bag that is easy to replace according to claim 1, characterized in that: The section of the filter cloth (2) that penetrates into the clamping groove of the fixing frame (11) is bent into a "U-shaped" structure.

4. The filter bag that is easy to replace according to claim 2, characterized in that: The airbag component (32) is a deformable component, and its outer wall is attached to the filter cloth (2) bent into a "U-shaped" structure.

5. The filter bag that is easy to replace according to claim 1, characterized in that: An upper sealing ring frame (51) is arranged above the filter cloth (2) and the fixing frame (11); a clamping plate (53) sleeved on the outer walls of the filter cloth (2) and the fixing frame (11) is installed at the bottom of the upper sealing ring frame (51); and a through interface seat (52) is installed at the top.

6. The filter bag that is easy to replace according to claim 1, characterized in that: A lower sealing ring frame (6) is provided at the lower part of the filter cloth (2) and the fixing frame (11), and the lower sealing ring frame (6) is a closed structure.

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