Dust filter bag replacement device and method

Abstract

The application provides a dust filter bag replacing device and a replacing method thereof. The dust filter bag replacing device comprises an outer clamping part, the outer clamping part comprises a first outer clamping piece for being attached to the outer wall of the opening of the filter bag, and a second outer clamping piece for being clamped on the opening of the filter bag and being attached to the outer wall of the opening of the filter bag, the second outer clamping piece is an arc-shaped plate, and a first connecting plate is connected between the two ends of the second outer clamping piece, the first outer clamping piece and the second outer clamping piece are oppositely arranged, and an automatic telescopic mechanism is connected between the first outer clamping piece and the first connecting plate; an inner clamping part is arranged corresponding to the outer clamping part, the inner clamping part comprises a first inner clamping piece and a second inner clamping piece for being attached to the inner wall of the opening of the filter bag and being oppositely arranged, a first guide rod is connected to the side of the first inner clamping piece close to the second inner clamping piece, the second inner clamping piece is an arc-shaped plate, and a second connecting plate is connected between the inner walls of the second inner clamping piece, the first guide rod is slidably arranged on the first connecting plate and the second connecting plate, and a first spring is sleeved on the first guide rod at the position between the first inner clamping piece and the first connecting plate. The application can improve the efficiency of disassembling and assembling the filter bag and reduce the risk of artificial injury.

Description

Technical Field

[0001] This invention relates to the field of dust collector technology, and in particular to a dust collector filter bag replacement device and replacement method. Background Technology

[0002] Currently, in the spray drying industry, baghouse dust collectors are commonly used for dust removal due to the excellent chemical stability and heat resistance of filter bags. These dust collectors include a tube sheet with multiple mounting holes, into which the filter bags are installed. However, filter bags are consumables and require regular maintenance, cleaning, or replacement. Currently, filter bag replacement relies primarily on manual labor, which is cumbersome and time-consuming, increasing machine downtime and impacting machine operation and production efficiency, ultimately failing to meet production demands. Summary of the Invention

[0003] In view of the above, the present invention provides a dust collector filter bag replacement device and method, which can solve the problems of cumbersome replacement process, long time and low efficiency when replacing filter bags manually.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is to provide a dust collector filter bag replacement device, wherein the filter bag is installed in the mounting hole through the dust collector filter bag replacement device, and the dust collector filter bag replacement device is blocked on the tube sheet, comprising:

[0005] The outer clamping part includes a first outer clamping member for fitting against the outer wall of the filter bag opening, and a second outer clamping member for being clamped onto the filter bag opening and fitting against the outer wall of the filter bag opening. The second outer clamping member is an arc-shaped plate and a first connecting plate is connected between the two ends of the second outer clamping member. The first outer clamping member and the second outer clamping member are arranged opposite to each other, and an automatic telescopic mechanism is connected between the first outer clamping member and the first connecting plate.

[0006] The inner clamping part is provided corresponding to the outer clamping part. The inner clamping part includes a first inner clamping member and a second inner clamping member that are disposed opposite to each other and fit against the inner wall of the filter bag opening. A first guide rod is connected to the side of the first inner clamping member close to the second inner clamping member. The second inner clamping member is an arc-shaped plate and a second connecting plate is connected between the inner walls of the second inner clamping member. The first guide rod slides through the first connecting plate and the second connecting plate, and a first spring is sleeved on the first guide rod at the position between the first inner clamping member and the first connecting plate.

[0007] Preferably, the first connecting plate and the second connecting plate are respectively provided with a first opening, the first guide rod passes through the first opening, and the end of the first guide rod is provided with a stop block for blocking the second connecting plate on the side away from the first connecting plate.

[0008] Preferably, the first connecting plate has U-shaped grooves at both ends corresponding to the inner side of the second outer clamping member for engaging the filter bag opening.

[0009] Preferably, guide posts are symmetrically connected to the side of the first connecting plate away from the second outer clamping member, and the guide posts are telescopically connected to the first connecting plate.

[0010] Preferably, the guide post is provided with a second guide rod, which slides through the first connecting plate, and a second spring is sleeved on the second guide rod.

[0011] Preferably, the guide post is a cylinder, the second guide rod is a square post, the second guide rod is connected to the side wall of the guide post, the first connecting plate is provided with a second opening, the second guide post is slidably inserted into the second opening, and the second opening matches the second guide post.

[0012] Preferably, the automatic telescopic mechanism includes a cylinder and an air circuit controller for controlling the movement of the cylinder. The first end of the cylinder is connected to the first external clamping member, the second end of the cylinder is connected to the first connecting plate, and the air circuit controller is connected to the second external clamping member.

[0013] Preferably, the first inner clamping member is an arc-shaped plate.

[0014] Preferably, the first connecting plate is provided with a handle at the top.

[0015] This invention provides a method for replacing dust collector filter bags using a dust collector filter bag replacement device, comprising the following steps:

[0016] Activate the automatic telescopic mechanism to retract inward and drive the first outer clamping member and the first inner clamping member to retract inward, compressing the first spring until the filter bag opening is deformed;

[0017] Lift the dust collector filter bag replacement device upwards until the filter bag is completely removed from the mounting hole;

[0018] Activate the automatic telescopic mechanism to extend it and move the first outer clamping member outward. The first spring returns to its original position and moves the first inner clamping member outward until a gap is formed between the edge of the filter bag opening and the first outer clamping member, and the filter bag is removed from the dust removal filter bag replacement device.

[0019] A new filter bag is provided, and the opening of the new filter bag is clamped onto the second outer clamp and attached to the outer wall of the opening of the new filter bag. The first inner clamp and the second inner clamp are respectively attached to the inner wall of the opening of the filter bag. The automatic telescopic mechanism is activated, causing the automatic telescopic mechanism to retract inward and drive the first outer clamp to retract inward until the first outer clamp is attached to the outer wall of the opening of the new filter bag. The automatic telescopic mechanism is further retracted inward until the opening of the new filter bag is deformed.

[0020] Place the new filter bag into the mounting hole and place the dust collector filter bag replacement device against the tube sheet. Activate the automatic telescopic mechanism to extend it and move the first outer clamping member outward. The first spring returns to its original position and moves the first inner clamping member outward until the opening edge of the new filter bag is deformed and restored.

[0021] A further improvement of the replacement method of the dust collector filter bag replacement device of the present invention is that guide posts are symmetrically connected on the side of the first connecting plate away from the second external clamping member, and the guide posts are telescopically connected to the first connecting plate.

[0022] When the automatic telescopic mechanism is activated, it retracts and drives the first outer clamping member and the first inner clamping member to retract further inward until the filter bag opening is deformed, at which point the guide post retracts.

[0023] When the automatic telescopic mechanism is activated, causing it to extend and move the first external clamping member outward, the guide post extends and abuts against the inner wall of the filter bag opening, assisting in the restoration of the filter bag opening.

[0024] The beneficial effects of this invention are as follows: The dust collector filter bag replacement device and method of this invention, when removing the filter bag from the tube sheet, uses inner and outer clamping parts to clamp the filter bag opening. The automatic telescopic mechanism retracts, deforming the filter bag opening so that its diameter is smaller than the opening size of the tube sheet, thereby separating the filter bag from the tube sheet. The filter bag is then removed upwards from the mounting hole. The automatic telescopic mechanism then returns to its original position, restoring the deformation of the filter bag opening. This process continues until the inner and outer clamping parts no longer hold the filter bag, allowing it to be removed from the device. The above steps are repeated to clamp and deform a new filter bag, which is then placed into the mounting hole on the tube sheet. Finally, the new filter bag is restored to its original position, completing the installation of the new filter bag. This invention improves the efficiency of filter bag installation and removal and reduces the risk of human injury. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the dust collector filter bag replacement device of the present invention.

[0027] Figure 2 This is a top view schematic diagram of the dust removal filter bag replacement device of the present invention.

[0028] Figure 3 This is a schematic diagram of the connection between the first inner clamping member, the first connecting plate, and the second connecting plate of the dust removal filter bag replacement device of the present invention.

[0029] Figure 4 This is a schematic diagram of the guide column of the dust collector filter bag replacement device of the present invention.

[0030] The correspondence between the reference numerals and the components in the attached drawings is as follows:

[0031] 1-Filter bag; 2-First external clamping component; 3-Second external clamping component; 301-First connecting plate; 302-U-shaped groove; 303-Handle; 4-First internal clamping component; 5-Second internal clamping component; 501-Second connecting plate; 6-First guide rod; 7-First spring; 8-Guide post; 9-Second spring; 10-Cylinder; 11-Air circuit controller; 12-Bolt; 13-Second guide rod. Detailed Implementation

[0032] To facilitate understanding of the present invention, the following description is provided in conjunction with the accompanying drawings and embodiments.

[0033] Please see Figures 1 to 4 This invention provides a dust collector filter bag replacement device. The filter bag is installed in the mounting hole through the dust collector filter bag replacement device, which is blocked on the tube sheet. The device includes an outer clamping part and an inner clamping part for holding the filter bag 1. Wherein:

[0034] The outer clamping part includes a first outer clamping member 2 for fitting against the outer wall of the opening of the filter bag 1, and a second outer clamping member 3 for clamping onto the opening of the filter bag 1 and fitting against the outer wall of the opening of the filter bag 1. The second outer clamping member 3 is an arc-shaped plate and a first connecting plate 301 is connected between the two ends of the second clamping member 3. The first outer clamping member 2 and the second outer clamping member 3 are arranged opposite to each other, and an automatic telescopic mechanism is connected between the first outer clamping member 2 and the first connecting plate 301.

[0035] The inner clamping part is provided corresponding to the outer clamping part, such as Figure 2 As shown, the inner clamping part includes a first inner clamping member 4 and a second inner clamping member 5, which are disposed opposite to each other and fit against the inner wall of the opening of the filter bag 1, as follows: Figure 3As shown, a first guide rod 6 is connected to the side of the first inner clamping member 4 near the second inner clamping member 5. The second inner clamping member 5 is an arc-shaped plate and a second connecting plate 501 is connected between the inner walls of the second inner clamping member. The outer wall of the second inner clamping member 5 is used to fit against the inner wall of the opening of the filter bag 1. The first guide rod 6 slides through the first connecting plate 301 and the second connecting plate 501. A first spring 7 is sleeved on the first guide rod 6 at the position between the first inner clamping member 4 and the first connecting plate 301. The first end of the first spring 7 is connected to the first inner clamping member 4, and the second end of the first spring 7 is connected to the first connecting plate 301.

[0036] The filter bag is installed in the mounting hole in the tube sheet. The inner and outer clamping parts are installed on the opening of the filter bag 1. The automatic telescopic mechanism retracts towards the inside of the filter bag opening 1, shortening the distance between the first outer clamping part 2 and the first connecting plate 301, thereby causing the filter bag to retract and deform inward, allowing the filter bag to detach from the tube sheet. Then, the automatic telescopic mechanism extends away from the inside of the filter bag opening 1. At the same time, under the action of the first spring 7 resetting, the first outer clamping part 2 and the first inner clamping part 4 keep clamping the filter bag opening, returning to the state where a gap is formed between the edge of the filter bag opening 1 and the first outer clamping part 2, that is, the first outer clamping part 2 and the first inner clamping part 4 no longer clamp the edge of the filter bag opening 1, thereby removing the filter bag 1 from the device.

[0037] In a preferred embodiment, the first connecting plate 301 and the second connecting plate 501 are respectively provided with first openings. The first guide rod 6 is slidably inserted into the first opening, and the end of the first guide rod 6 is provided with a first stop block for blocking the second connecting plate 501 on the side away from the first connecting plate 301. The first end of the first guide rod 6 is fixed to the first inner clamping member 4, and the end of the second end of the first guide rod 6 is provided with an internal threaded hole. The first stop block is a bolt 12, which is screwed into the internal threaded hole, and the diameter of the bolt head is larger than the diameter of the first opening. The first stop block plays a role in limiting the sliding of the first guide rod 6 and preventing the first guide rod 6 from sliding out of the first spring 7.

[0038] As a preferred implementation method, such as Figure 1 As shown, the first connecting plate 301 has U-shaped grooves 302 at both ends corresponding to the inner side of the second outer clamping member 3, which are respectively provided for the filter bag 1 to be engaged. The opening of the U-shaped groove 302 is engaged with the opening of the filter bag 1. Preferably, the first connecting plate 302 is a trapezoidal plate without a bottom plate. The waists on both sides of the trapezoidal plate extend outward to form U-shaped grooves 302. The upper bottom plate of the trapezoidal plate is arranged away from the second outer clamping member 3. The first guide rod 6 slides through the upper bottom plate of the first connecting plate 301.

[0039] In a preferred embodiment, guide posts 8 are symmetrically connected to the side of the first connecting plate 301 away from the second outer clamping member 3. The guide posts 8 are telescopically connected to the first connecting plate 301. The guide posts 8 assist the filter bag 1 in restoring its shape during deformation. When the filter bag 1 is compressed and deformed, the circle becomes concave, and the guide posts 8 are also compressed. When the filter bag 1 is restored to its original shape, the guide posts 8 extend and abut against the inner wall of the opening of the filter bag 1, causing it to move outward to assist the filter bag 1 in restoring its shape. Without the guide posts 8 on both sides, small concavities are likely to form on both sides of the filter bag 1.

[0040] As a preferred implementation method, such as Figure 4 As shown, a second guide rod 13 is provided on the guide post 8. The second guide rod 13 slides through the first connecting plate 301. A second spring 9 is sleeved on the second guide rod 13. The first end of the second spring 9 is connected to the guide post 8, and the second end of the second spring 9 is connected to the first connecting plate 301. The second spring 9 plays a restoring role when the guide post 8 is compressed.

[0041] In a preferred embodiment, the guide post 8 is cylindrical, and the second guide rod 13 is square. The second guide rod 13 is connected to the side wall of the guide post 8. The first connecting plate 301 has a second opening, and the second guide post slides through the second opening, which matches the second guide post. The cylindrical shape of the guide post 8 prevents damage to the edge of the filter bag when it contacts the inner wall of the filter bag 1. The square shape of the second guide rod 13 and the matching of the second opening prevent rotation of the second guide rod 13 when it slides within the second opening. Preferably, the cross-section of the second guide rod 13 cannot be circular, otherwise it will not effectively restrict the rotation of the second guide rod 13. The cross-section of the second guide rod 13 can be triangular, rectangular, trapezoidal, etc.

[0042] Better, such as Figure 4 As shown, the end of the second guide rod 13 is provided with a second stop block for blocking the first connecting plate 301 on the side away from the second guide rod 13. The first end of the second guide rod 13 is fixed to the guide post 8, and the end of the second end of the second guide rod 13 is provided with an internal threaded hole. The second stop block is a bolt, which is screwed into the internal threaded hole, and the diameter of the bolt head is larger than the diameter of the second opening hole, thereby preventing the second guide rod 13 from sliding outward and disengaging from the second spring 9.

[0043] In a preferred embodiment, the automatic telescopic mechanism includes a cylinder 10 and an air circuit controller 11 for controlling the movement of the cylinder 10. The first end of the cylinder 10 is connected to a first external clamping member 2, and the second end of the cylinder 10 is connected to a first connecting plate 301. The air circuit controller 11 is connected to a second external clamping member 3. The bottom of the first end of the cylinder 10 is bolted to the first external clamping member 2, and the bottom of the second end of the cylinder 10 is bolted to the upper base plate of the first connecting plate 301. The air circuit controller 11 is connected to an external air pipe. By manually rotating the knob of the air circuit controller 11, the air circuit is changed, thereby controlling the telescopic movement of the cylinder 10.

[0044] As a preferred implementation method, such as Figure 2 As shown, the first inner clamping member 4 is an arc-shaped plate. The outer wall of the first inner clamping member 4 is used to fit against the inner wall of the opening of the filter bag 1. The inner wall of the first inner clamping member 4 is connected to the first guide rod 6 and the first spring 7.

[0045] As a preferred implementation method, such as Figure 1 As shown, the second outer clamping member 3 is provided with a handle 303 at the top, and the handle 303 is located between the top two ends of the first connecting plate 301.

[0046] This invention provides a method for replacing dust collector filter bags using a dust collector filter bag replacement device, comprising the following steps:

[0047] Filter bag 1 is installed in the mounting hole of the tube sheet. First, remove the old filter bag from the mounting hole, and then put the new filter bag into the mounting hole for installation.

[0048] Activate the automatic telescopic mechanism to retract inward and drive the first outer clamp 2 and the first inner clamp 4 to retract inward, compressing the first spring 7 until the filter bag opening is deformed.

[0049] Lift the dust collector filter bag replacement device upwards until the filter bag is completely removed from the mounting hole;

[0050] Activate the automatic telescopic mechanism to extend it and move the first outer clamp 2 outward. The first spring 7 returns to its original position and moves the first inner clamp 4 outward until a gap is formed between the opening edge of the filter bag 1 and the first outer clamp 2, and the filter bag 1 is removed from the dust removal filter bag replacement device.

[0051] A new filter bag is provided, and the opening of the new filter bag is clamped onto the second outer clamp 3 and attached to the outer wall of the opening of the new filter bag 1. The first inner clamp 4 and the second inner clamp 5 are respectively attached to the inner wall of the filter bag opening. The automatic telescopic mechanism is activated, causing the automatic telescopic mechanism to retract inward and drive the first outer clamp 2 to retract inward until the first outer clamp 2 is attached to the outer wall of the new filter bag opening. The automatic telescopic mechanism is further retracted inward until the opening of the new filter bag is deformed.

[0052] Place the new filter bag into the mounting hole and place the dust collector filter bag replacement device on the tube sheet. Activate the automatic telescopic mechanism to extend it and move the first outer clamping member 2 outward. The first spring 7 returns to its original position and moves the first inner clamping member 4 outward until the opening edge of the new filter bag is deformed and restored. Then remove the new filter bag from the dust collector filter bag replacement device.

[0053] A further improvement of the replacement method of the dust filter bag replacement device of the present invention is that guide posts 8 are symmetrically connected on the side of the first connecting plate 301 away from the second outer clamping member 3, and the guide posts 8 are telescopically connected to the first connecting plate 301.

[0054] When the automatic telescopic mechanism is activated, it retracts and drives the first outer clamping member 2 and the first inner clamping member 4 to retract inward until the filter bag opening is deformed, at which point the guide column 8 retracts.

[0055] When the automatic telescopic mechanism is activated, causing it to extend and move the first outer clamping member 2 outward, the guide post 8 extends and abuts against the inner wall of the filter bag opening, assisting in the restoration of the filter bag opening.

[0056] Preferably, the air path is changed by manually rotating the knob of the air path controller 11, thereby controlling the extension and retraction of the cylinder 10. When the automatic extension mechanism retracts inward, the knob on the air path controller 11 is manually rotated to retract the cylinder 10 toward the inside of the filter bag opening; when the automatic extension mechanism extends, the knob on the air path controller 11 is manually rotated in the opposite direction to move the cylinder 10 in the opposite direction.

[0057] The dust collector filter bag replacement device of the present invention has a filter bag installed in a mounting hole on a tube sheet. When removing the filter bag, the filter bag is first taken out of the mounting hole, and then the filter bag is separated from the device. The outer clamping part of the device is attached to the outer wall of the filter bag opening, and the inner clamping part is attached to the inner wall of the filter bag opening. Manually rotating the knob on the air circuit controller 11 causes the cylinder 10 to retract towards the inside of the filter bag opening, and drives the first outer clamping member 2 and the first inner clamping member 4 to retract inward. At this time, the first spring 7 is compressed and applies an outward elastic force to the first inner clamping member 4, so that the first outer clamping member 2 and the first inner clamping member 4 clamp the filter bag opening. When the first outer clamp 2 and the first inner clamp 4 retract inward, they will retract together with the edge of the clamped filter bag opening, causing the edge of the filter bag opening at this position to deform, making the filter bag diameter smaller than the mounting hole size of the tube sheet, thereby separating the filter bag from the tube sheet. Hold the handle 303 and lift the device and filter bag upward through the mounting hole.

[0058] Then, manually rotate the knob of the air circuit controller 11 in the opposite direction. The cylinder 10 moves in the opposite direction, and the first outer clamp 2 and the first inner clamp 4 drive the filter bag to return to its deformed position until a gap is formed between the edge of the filter bag opening and the first outer clamp 2. That is, the first outer clamp 2 and the first inner clamp 4 no longer clamp the filter bag, and the old filter bag can be removed from the device.

[0059] Next, install the new filter bag. First, install the new filter bag onto the device, and then place the new filter bag into the mounting hole for installation. Place the second outer clamp 3, the first inner clamp 4, and the second inner clamp 5 onto the opening of the new filter bag, and cause the cylinder 10 to drive the first outer clamp 2 to retract inward until the first outer clamp 2 is attached to the outer wall of the filter bag opening. Further retract the cylinder 10 inward until the opening of the new filter bag is deformed (so that the device clamps the new filter bag and the diameter of the new filter bag is smaller than the diameter of the mounting hole, so that the new filter bag can be placed into the mounting hole).

[0060] Next, place the new filter bag into the mounting hole and reverse the cylinder 10 until the edge of the new filter bag opening is restored to its original shape. Then, install the new filter bag into the mounting hole. Finally, separate the device from the new filter bag and proceed to the next mounting hole to remove the old filter bag and install the new filter bag, thus completing the filter bag replacement.

[0061] The dust collector filter bag replacement device and method of the present invention can improve filter bag replacement efficiency and reduce the risk of manual injury, especially when replacing filter bags in batches, where manual installation is time-consuming and the rebound during installation may pinch fingers and cause injury. This invention requires compressed air on site, and because the tooling occupies some space, the installation spacing needs to be appropriately increased during the design phase.

[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A dust collector filter bag replacement device, characterized in that, The filter bag is installed in the mounting hole via a dust collector filter bag replacement device, and the dust collector filter bag replacement device is blocked on the tube sheet, including: The outer clamping part includes a first outer clamping member for fitting against the outer wall of the filter bag opening, and a second outer clamping member for being clamped onto the filter bag opening and fitting against the outer wall of the filter bag opening. The second outer clamping member is an arc-shaped plate and a first connecting plate is connected between the two ends of the second outer clamping member. The first outer clamping member and the second outer clamping member are arranged opposite to each other, and an automatic telescopic mechanism is connected between the first outer clamping member and the first connecting plate. The inner clamping part is provided corresponding to the outer clamping part. The inner clamping part includes a first inner clamping member and a second inner clamping member that are disposed opposite to each other and fit against the inner wall of the filter bag opening. A first guide rod is connected to the side of the first inner clamping member close to the second inner clamping member. The second inner clamping member is an arc-shaped plate and a second connecting plate is connected between the inner walls of the second inner clamping member. The first guide rod slides through the first connecting plate and the second connecting plate, and a first spring is sleeved on the first guide rod at the position between the first inner clamping member and the first connecting plate.

2. The dust collector filter bag replacement device as described in claim 1, characterized in that, The first connecting plate and the second connecting plate are respectively provided with first openings, the first guide rod is slidably inserted in the first opening, and the end of the first guide rod is provided with a stop block for blocking the second connecting plate on the side away from the first connecting plate.

3. The dust collector filter bag replacement device as described in claim 1, characterized in that, The first connecting plate has U-shaped grooves at both ends corresponding to the inner side of the second outer clamping member for the filter bag opening to be engaged.

4. The dust collector filter bag replacement device as described in claim 1, characterized in that, Guide posts are symmetrically connected to the side of the first connecting plate away from the second external clamping member, and the guide posts are telescopically connected to the first connecting plate.

5. The dust collector filter bag replacement device as described in claim 4, characterized in that, The guide post is provided with a second guide rod, which slides through the first connecting plate, and a second spring is sleeved on the second guide rod.

6. The dust collector filter bag replacement device as described in claim 5, characterized in that, The guide post is a cylinder, and the second guide rod is a square post. The second guide rod is connected to the side wall of the guide post. The first connecting plate has a second opening, and the second guide rod slides through the second opening. The second opening matches the second guide rod.

7. The dust collector filter bag replacement device as described in claim 1, characterized in that, The automatic telescopic mechanism includes a cylinder and an air circuit controller for controlling the movement of the cylinder. The first end of the cylinder is connected to the first external clamping member, the second end of the cylinder is connected to the first connecting plate, and the air circuit controller is connected to the second external clamping member.

8. The dust collector filter bag replacement device as described in claim 1, characterized in that, The first connecting plate is provided with a handle at the top.

9. A method for replacing dust collector filter bags using the dust collector filter bag replacement device as described in claim 1, characterized in that, Includes the following steps: Activate the automatic telescopic mechanism to retract inward and drive the first outer clamp and the first inner clamp to retract inward, compressing the first spring until the filter bag opening deforms. Lift the dust collector filter bag replacement device upwards until the filter bag is completely removed from the mounting hole; Activate the automatic telescopic mechanism to extend it and move the first outer clamping member outward. The first spring returns to its original position and moves the first inner clamping member outward until a gap is formed between the edge of the filter bag opening and the first outer clamping member, and the filter bag is removed from the dust removal filter bag replacement device. A new filter bag is provided, and the opening of the new filter bag is clamped onto the second outer clamp and attached to the outer wall of the opening of the new filter bag. The first inner clamp and the second inner clamp are respectively attached to the inner wall of the opening of the new filter bag. The automatic telescopic mechanism is activated, causing the automatic telescopic mechanism to retract inward and drive the first outer clamp to retract inward until the first outer clamp is attached to the outer wall of the opening of the new filter bag. The automatic telescopic mechanism is further retracted inward until the opening of the new filter bag is deformed. Place the new filter bag into the mounting hole and place the dust removal filter bag replacement device against the tube sheet. Activate the automatic telescopic mechanism to extend it and move the first outer clamping member outward. The first spring returns to its original position and moves the first inner clamping member outward until the opening edge of the new filter bag is deformed and restored.

10. The replacement method of the dust collector filter bag replacement device as described in claim 9, characterized in that, Guide posts are symmetrically connected to the side of the first connecting plate away from the second external clamping member, and the guide posts are telescopically connected to the first connecting plate. When the automatic telescopic mechanism is activated, it retracts inward, causing the first outer clamping member and the first inner clamping member to retract inward until the filter bag opening is deformed, at which point the guide column retracts. When the automatic telescopic mechanism is activated, causing it to extend and move the first external clamping member outward, the guide post extends and abuts against the inner wall of the filter bag opening, assisting the filter bag opening to return to its original position.

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