A dust bag testing device for a bag-type dust collector

Abstract

This invention relates to the field of dust collector bag technology, and more particularly to a dust collector bag testing device for baghouse dust collectors. The device includes a main body and a lifting frame. A tilting frame is rotatably connected to one side of the main body, and a dust collector bag is placed on the tilting frame. An inner wall groove is formed within the main body, and a first connecting sleeve is rotatably connected within the groove. A second connecting sleeve is movably connected to one side of the first connecting sleeve. A first lead screw and a second lead screw are also installed within the main body. The lifting frame is movably connected to the outside of the first lead screw. This solution reduces the possibility of requiring extensive manual operation during dust collector bag testing, reduces the limitation of single-function testing equipment, improves the multi-functional testing effect of the device on dust collector bags, and results in more accurate test results. It also enhances the efficiency and automation of the device's operation, enables comparative testing, and provides a more intuitive understanding of some testing structures.

Description

Technical Field

[0001] This invention relates to the field of dust collector bag technology, and in particular to a dust collector bag testing device for baghouse dust collectors. Background Technology

[0002] Baghouse dust collectors, as core equipment in industrial dust control and flue gas purification, boast advantages such as high dust removal efficiency, wide adaptability to various dust types, and stable operation. The dust collector bag, as the core filtration component of the baghouse dust collector, directly determines the purification effect and operational stability of the dust collector due to its structural integrity, pressure resistance, filtration performance, and service life. If the dust collector bag is damaged, lacks sufficient toughness, or has poor sealing performance, dust leakage can easily occur, not only affecting the production environment's compliance with standards but also potentially causing equipment failure, increasing maintenance costs, and even posing safety hazards.

[0003] Currently, comprehensive performance testing of dust collector bags is required before they leave the factory and during regular maintenance in use to screen qualified products and identify aging and damaged parts. Existing testing devices have limited functionality, making it difficult to perform multi-angle, all-around testing of dust collector bags. In particular, the detection of the compressive strength of the inner wall and localized damage is not precise enough, relying heavily on manual visual inspection or simple instrument detection, which is inefficient and prone to misjudgment. Furthermore, the existing devices have poor coordination between lifting, expansion, and testing mechanisms, making automated continuous testing impossible and requiring significant manual intervention. This not only increases labor costs but also leads to non-standard testing procedures and poor data consistency. Therefore, a dust collector bag testing device for baghouse dust collectors is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a dust bag testing device for baghouse dust collectors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dust collector bag testing device for a bag filter includes a device body and a lifting frame. A tilting frame is rotatably connected to one side of the device body, and a dust collector bag body is placed on the tilting frame. An inner wall groove is formed inside the device body, and a first connecting sleeve is rotatably connected to the inner wall groove. A second connecting sleeve is movably connected to one side of the first connecting sleeve. A first lead screw and a second lead screw are also installed inside the device body. The lifting frame is movably connected to the outside of the first lead screw. An expansion member and a test piece are movably connected inside the lifting frame. A controller and a push cylinder are also installed on the device body.

[0006] Preferably, a placement frame is provided on one side of the device body, and the flipping frame is horizontally inverted on the placement frame. The flipping frame has multiple arc-shaped grooves, and electrically controlled clamping plates are symmetrically installed in each arc-shaped groove. The dust collection bag body is placed in the arc-shaped groove, and the electrically controlled clamping plates are connected to the dust collection bag body. The dust collection bag body includes a bag mouth ring, a bottom ring, and a bag body. The bottom ring and the bag mouth ring are respectively installed on both ends of the bag body. The two ends of the flipping frame are rotatably connected to the device body, and a flipping motor is connected to one end of the frame. The flipping motor is installed on the device body.

[0007] Preferably, the first lead screw is vertically installed inside the device body, and the two ends of the lifting frame are threaded to the outside of the first lead screw. A drive motor is installed on the top of the first lead screw. A placement groove is horizontally opened inside the lifting frame, and a placement opening is opened on the bottom surface of the inner end of the placement groove. A support base plate is movably connected to the placement opening. A second cylinder is provided on one side of the support base plate. The second cylinder is installed on the outside of the lifting frame. A first cylinder is also installed on the upper side of the second cylinder. The telescopic end of the first cylinder is connected to the placement groove, and an electrically controlled adsorption block is provided on the telescopic end of the first cylinder.

[0008] Preferably, multiple inner wall grooves are provided. A first connecting sleeve is rotatably connected to the front opening of each inner wall groove. An insertion groove is provided on the bottom side of the first connecting sleeve. A second connecting sleeve is provided on the rear side of each inner wall groove. An insertion block is provided at the bottom end of the second connecting sleeve. The insertion blocks are all connected to the insertion grooves and are electrically connected to each other. An inner groove is provided in both the first and second connecting sleeves. The inner groove is adapted to the dust bag body. A metal contact sensor is installed on the inner wall surface of the inner groove. Rubber clamping plates are provided on the top and bottom ends of the inner groove. The rubber clamping plates are connected to the outside of the bag opening ring and the bottom ring. A synchronous drive belt is connected between the bottom ends of the first connecting sleeves. A servo motor is also connected to the bottom end of one of the first connecting sleeves. Side wings are installed on each of the second connecting sleeves. An electrically controlled linear push rod is connected to the side wings. The electrically controlled linear push rod is installed on the inner wall of the inner wall groove.

[0009] Preferably, a second lead screw is symmetrically installed on both inner walls of the device body, and a drive motor is also installed on the top of the second lead screw. A guide rod is provided on one side of the second lead screw, and a lifting block is movably connected to the outer side of the guide rod and the second lead screw. A lifting slot is provided in the lifting block. An upper groove is also symmetrically provided on the inner wall of the device body. The upper groove, the lifting slot and the placement groove are adapted to each other in size.

[0010] Preferably, the two ends of the expansion member are connected to the lifting frame and the lifting block. The expansion member includes a first frame plate, an upper rotating ring, and an expansion frame. Multiple upper rotating rings are provided, all of which are rotatably connected to the first frame plate. Each upper rotating ring has a plug hole on its top surface and an expansion frame is integrally installed on its bottom surface. A drive motor is also provided in the middle of the first frame plate. A synchronous rotating belt is connected between the outer ring surface of the upper rotating ring and the output end of the drive motor. The upper rotating ring is rotatably connected to the first frame plate, and the expansion frame is supported in the dust collection bag body.

[0011] Preferably, the test piece is movably connected in the upper side slot, the lifting slot, and the placement slot. The test piece includes a second frame plate, a frame body, a retractable rotating rod, an outer sleeve rod, and a telescopic probe. The frame body is rotatably connected in the second frame plate. The frame body is provided with a connecting end, which is connected to a plug hole. The retractable rotating rod is rotatably connected in the frame body. Multiple protrusion holes are alternately arranged on both sides of the frame body. An outer sleeve rod is installed on the inner end of each protrusion hole. A telescopic probe is spring-connected to each outer sleeve rod. The front end of the telescopic probe is connected to the outer side of the protrusion hole and contacts the inner wall of the dust bag body. A pull rope is connected to the rear end of the telescopic probe. The other end of the pull rope is wound around the outer surface of the retractable rotating rod. A rotary motor is provided at the top of the retractable rotating rod.

[0012] The beneficial effects of this invention are: This solution uses a flipping frame to easily move the dust collection bag to a designated position. The expansion bracket helps to support the dust collection bag, preventing it from collapsing during testing. The test piece allows for bag inspection, and the spring-connected telescopic probe expands the bag outward. If there is a problem with the bag, the telescopic probe will penetrate the bag directly, allowing for a direct view of the issue. The first and second connecting sleeves work together to clamp the dust bag body, thus preventing it from moving. Combined with the connection between the upper frame and the upper rotating ring, they can rotate synchronously, allowing the telescopic probe to perform circumferential inspection on the inside of the dust bag. Since the telescopic probes are arranged sequentially from left to right, the inspection is more comprehensive. If there are defects such as holes in the bag, the telescopic probe can quickly detect the problem area by contacting the metal contact sensor.

[0013] This solution reduces the need for extensive manual operation during dust bag testing, mitigates the limitations of single-function equipment, improves the multi-functional testing effect of the device on dust bags, and yields more accurate test results. It also enhances the efficiency and automation of the device's operation, enables comparative testing, and provides a more intuitive understanding of some testing structures. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a dust collector bag testing device for a bag filter proposed in this invention; Figure 2 This is a schematic diagram of the main structure of a dust collector bag testing device for a bag filter proposed in this invention; Figure 3 This is a schematic diagram of the structure of a dust collector bag testing device for a bag filter proposed in this invention during testing; Figure 4 This is a structural schematic diagram of the expansion support section; Figure 5 This is a structural schematic diagram of the lifting frame section; Figure 6 This is a schematic diagram of the structure of the main body of the device; Figure 7 for Figure 6 A schematic diagram of the visual structure of part A in the middle; Figure 8 This is a schematic diagram of the test structure for the first connecting sleeve and the frame. Figure 9 for Figure 8 Partial front view structural diagram; Figure 10 for Figure 9 A structural diagram of part B in the middle section; Figure 11 This is a structural schematic diagram of the connecting sleeve section; Figure 12 This is a structural schematic diagram of the first connecting sleeve, the dust bag body, the upper rotating ring, and the frame. Figure 13 These are schematic diagrams of two installation structures for the outer sleeve rod.

[0015] In the diagram: 1. Device body; 11. First lead screw; 12. Inner wall groove; 13. First connecting sleeve; 131. Inner groove; 132. Synchronous drive belt; 14. Placement frame; 15. Second connecting sleeve; 16. Second lead screw; 17. Lifting block; 18. Push cylinder; 2. Dust bag body; 21. Tilting frame; 22. Electrically controlled clamping plate; 3. Lifting frame; 31. First cylinder; 32. Second cylinder; 33. Support base plate; 34. Placement groove; 4. Expansion member; 41. Upper rotating ring; 42. Insertion hole; 43. Drive motor; 44. Expansion frame; 5. Test piece; 51. Frame; 52. Rotary motor; 53. Retracting and extending rotating rod; 54. Outer rod; 55. Telescopic probe; 56. Pull rope. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Example: Refer to Figure 1-13 A dust collector bag testing device for a bag filter includes a device body 1 and a lifting frame 3. A tilting frame 21 is rotatably connected to one side of the device body 1, and a dust collector bag body 2 is placed on the tilting frame 21. An inner wall groove 12 is formed inside the device body 1, and a first connecting sleeve 13 is rotatably connected to the inner wall groove 12. A second connecting sleeve 15 is movably connected to one side of the first connecting sleeve 13. A first lead screw 11 and a second lead screw 16 are also installed inside the device body 1. The lifting frame 3 is movably connected to the outside of the first lead screw 11, and an expansion member 4 and a test piece 5 are movably connected inside the lifting frame 3. A controller and a push cylinder 18 are also installed on the device body 1. The push cylinder 18 can assist the first and second frames. The plate moves horizontally. A placement rack 14 is provided on one side of the device body 1. The flipping rack 21 is horizontally inverted on the placement rack 14 to facilitate the placement of the dust bag body 2. The flipping rack 21 has multiple arc-shaped grooves. Electrically controlled clamping plates 22 are symmetrically installed in the arc-shaped grooves to limit the movement of the dust bag body 2 and prevent it from falling. The dust bag body 2 is placed in the arc-shaped grooves. The electrically controlled clamping plates 22 are connected to the dust bag body 2. The dust bag body 2 includes a bag mouth ring, a bottom ring, and a bag body. The bottom ring and the bag mouth ring are respectively installed on both ends of the bag body. The two ends of the flipping rack 21 are rotatably connected to the device body 1. A flipping motor is connected to one end of the flipping rack 21. The flipping motor is installed on the device body 1.

[0018] Specifically, the first lead screw 11 is vertically installed inside the device body 1. The two ends of the lifting frame 3 are threaded to the outside of the first lead screw 11, acting to move the expansion member 4 and the test piece 5 up and down. A drive motor is installed on the top of the first lead screw 11. A placement groove 34 is horizontally opened inside the lifting frame 3. A placement opening is opened on the bottom surface of the inner end of the placement groove 34 to allow the expansion member 4 to be placed. A support base plate 33 is movably connected to the placement opening. A second cylinder 32 is set on one side of the support base plate 33. The second cylinder 32 is installed on the outside of the lifting frame 3. A first cylinder 31 is also installed on the upper side of the second cylinder 32. The telescopic end of the first cylinder 31 is connected to the placement groove 34. An electrically controlled adsorption block is set on the telescopic end of the first cylinder 31 to act as a magnetic connection between the first and second frame plates. Magnetic blocks are installed on both the first and second frame plates, which can perform a stable push-pull effect.

[0019] Furthermore, the inner wall groove 12 has multiple openings, and a first connecting sleeve 13 is rotatably connected to the front opening of each inner wall groove 12. The bottom side of the first connecting sleeve 13 has an insertion groove. A second connecting sleeve 15 is provided on the rear side of each inner wall groove 12. An insertion block is provided at the bottom end of each second connecting sleeve 15, and the insertion block connects to the insertion groove to connect the two sleeves, thus stabilizing the dust bag body 2 and preventing rotation. The two are electrically connected. Both the first connecting sleeve 13 and the second connecting sleeve 15 have inner grooves 131 that fit the dust bag body 2. A metal contact sensor is installed on the inner wall surface of the inner groove 131 to facilitate connection with the telescopic probe 55. Induction current is generated after contact, which can determine whether there is a defect such as damage to the dust bag body 2 at that position. Rubber clamping plates are provided at the top and bottom of the inner groove 131. The rubber clamping plates are connected to the outside of the bag mouth ring and the bottom ring to prevent self-rotation. A synchronous drive belt 132 is connected between the bottom ends of the first connecting sleeve 13 to facilitate the 180-degree rotation adjustment of the first connecting sleeve 13, thereby completing the closure of the two sleeves. A servo motor is also connected to the bottom end of one of the first connecting sleeves 13. Side wing plates are installed on the second connecting sleeve 15. Electrically controlled linear push rods are connected to the side wing plates to push the second connecting sleeve 15 forward. The electrically controlled linear push rods are installed on the inner wall of the inner wall groove 12.

[0020] A second lead screw 16 is symmetrically installed on both inner walls of the device body 1. A drive motor is also installed on the top of the second lead screw 16. A guide rod is provided on one side of the second lead screw 16. A lifting block 17 is movably connected to the guide rod and the outer side of the second lead screw 16. A lifting slot is provided in the lifting block 17. An upper groove is also symmetrically provided on the inner wall of the device body 1. The upper groove, the lifting slot and the placement groove 34 are adapted to each other in size.

[0021] Furthermore, the two ends of the expansion member 4 are connected to the lifting frame 3 and the lifting block 17. The expansion member 4 includes a first frame plate, an upper rotating ring 41 and an expansion frame 44. Multiple upper rotating rings 41 are provided, all of which are rotatably connected to the first frame plate. Each upper rotating ring 41 has an insertion hole 42 on its top surface to allow the insertion of the test piece 5 and achieve synchronous rotation of the two. An expansion frame 44 is integrally installed on the bottom surface of each upper rotating ring 41. A drive motor 43 is also provided in the middle of the first frame plate. A synchronous rotating belt is connected between the outer ring surface of the upper rotating ring 41 and the output end of the drive motor 43 to control the synchronous rotation of the expansion frame 44 and the test piece 5 to achieve the effect of circumferential detection. The upper rotating ring 41 is rotatably connected to the first frame plate, and the expansion frame 44 is supported in the dust bag body 2.

[0022] In this embodiment, the test piece 5 is movably connected within the upper side slot, the lifting slot, and the placement slot 34. The test piece 5 includes a second frame plate, a frame body 51, a retractable rotating rod 53, an outer sleeve rod 54, and a telescopic probe 55. The frame body 51 is rotatably connected within the second frame plate. A connecting end is provided on the frame body 51, which is connected to the insertion hole 42. The retractable rotating rod 53 is rotatably connected within the frame body 51. Multiple probe holes are alternately arranged on both sides of the frame body 51. There are two types of frame body 51 configurations. In the first type, the probe holes are vertically opened on both sides and staggered to ensure that they are not on the same level. In the second type, the probe holes on the frame body 51 are arranged in a circular pattern, and the outer sleeve rod 54 is also correspondingly provided, distributed on the circular surface of the frame body 51. The probe holes are also staggered, with only one probe hole per level. The second type of frame 51 has a protrusion hole, which allows for multi-angle probing when the telescopic probe 55 is extended. It also pushes the dust bag body 2 outward in all directions instead of pushing it to the sides. An outer rod 54 is installed on the inner end of the protrusion hole. The telescopic probe 55 is connected to the inner end of the outer rod 54 by a spring. A pressure sensing plate is provided on one side of the spring. The front end of the telescopic probe 55 is connected to the outer side of the protrusion hole and contacts the inner wall of the dust bag body 2. A pull rope 56 is connected to the rear end of the telescopic probe 55 to retract the telescopic probe 55 inward. The other end of the pull rope 56 is wrapped around the outer surface of the take-up and release rotating rod 53. A rotary motor 52 is provided at the top of the take-up and release rotating rod 53. Multiple spacers are installed on the take-up and release rotating rod 53 to prevent the pull ropes 56 from getting tangled and contacting each other.

[0023] Working Principle: A brand new dust collector bag body 2 and a dust collector bag body 2 that has been used for a longer period of time are placed on the tilting frame 21 respectively. During placement, the bag opening ring is engaged in the arc-shaped groove. Then, the electrically controlled clamping plate 22 is rotated to clamp the bag opening ring. After clamping, the tilting frame 21 is rotated 90 degrees to make the dust collector bag body 2 vertical. At this time, the first cylinder 31 in the lifting frame 3 extends forward and is attracted to the first frame plate through an electromagnetic connection. Then, the expansion member 4 is moved to the support base plate 33 in the placement slot 34. Then, the lifting frame 3 is controlled to descend. At this time, the position of the expansion member 44 will correspond to the position of the dust collector bag body 2. As it continues to descend, the expansion member 44 will insert into the dust collector bag body 2, which can support the dust collector bag body 2. Then, the second cylinder 32 retracts, the support base plate 33 retracts, and then the lifting frame 3 is controlled to move upward again. During the movement, the first frame plate will detach from the lifting frame 3. After detachment, the support plate 33 extends again and moves to the initial position. At this time, the top push cylinder 18 will push the test piece 5 forward and into the lifting block 17. The first cylinder 31 extends again and moves the test piece 5 to the support plate 33 through magnetic connection. Then the test piece 5 is moved downward so that the frame 51 is inserted into the expansion frame 44. After being inserted into the designated position, the retractable rotating rod 53 is controlled to rotate quickly to achieve the effect of rapid wire release. Under the action of the spring, the telescopic probe 55 will quickly pop out and contact the dust bag body 2. Due to the high speed, it is easy to pull the aged dust bag body 2 outward to produce tears or holes. If the holes and tears are large, the telescopic probe 55 will be directly exposed on the outside of the dust bag body 2. At this time, the quality of the two dust bag bodies 2 can be directly compared and distinguished. The pressure value on the side of the telescopic probe 55 protruding from the dust bag body 2 will be smaller. The part that is not protruding is still in a squeezed state, and the pressure value is within a certain range. After the operation is completed, control the rotary motor 52 to reverse, retract the telescopic probe 55, and then the lifting frame 3 rises again, causing the frame 51 to detach from the expansion frame 44. When it moves to the top side, push it into the lifting block 17, and then retract the support base plate 33 again. Control the lifting frame 3 to descend until the first frame plate is connected to the placement slot 34 again. Then control the support base plate 33 to extend. At this time, due to the connection of the rubber clamping plate and the expansion frame 44, the dust bag body 2 will be positioned on the outside of the expansion frame 44 and will not fall. Then control the electric clamping plate 22 to open, and the first cylinder 31 will push the first frame plate forward. The expansion frame 44 will push the dust bag body 2 into the first connecting sleeve 13. After reaching the designated position, control the first connecting sleeve 13 to rotate 180 degrees, and then control the second connecting sleeve 15 to move, realizing... When the two sleeves are closed, they are stably clamped on the outside of the dust bag body 2. Then, the second lead screw 16 is rotated, and the lifting block 17 lowers the test piece 5 again and inserts it into the expansion frame 44. Then, the retractable rotating rod 53 rotates again, and the telescopic probe 55 extends out and contacts the dust bag body 2. If there is a crack or hole, the telescopic probe 55 will directly contact the inner wall of the sleeve, forming a metal connection between the two. The induced current will be transmitted to the controller, which will then control the drive motor 43 to rotate. The upper rotating ring 41, the expansion frame 44, and the frame 51 will rotate simultaneously, and the telescopic probe 55 will also rotate accordingly, thereby detecting the entire inner wall surface of the dust bag body 2. The number and size of the damaged area can be determined based on the number of triggers and the trigger time of the induced current, thus judging the difference between the two dust bag bodies 2.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dust collector bag testing device for a bag filter, characterized in that, include: The device body (1) has a rotating frame (21) rotatably connected to one side of the device body (1), on which a dust removal bag body (2) is placed. An inner wall groove (12) is opened inside the device body (1), and a first connecting sleeve (13) is rotatably connected inside the inner wall groove (12). A second connecting sleeve (15) is movably connected to one side of the first connecting sleeve (13). A first lead screw (11) and a second lead screw (16) are also installed inside the device body (1). The lifting frame (3) is movably connected to the outside of the first lead screw (11). The lifting frame (3) is movably connected to the expansion member (4) and the test piece (5). The device body (1) is also equipped with a controller and a push cylinder (18).

2. The dust collector bag testing device for a bag filter according to claim 1, characterized in that, A placement rack (14) is provided on one side of the device body (1). The flipping rack (21) is horizontally inverted on the placement rack (14). Multiple arc-shaped grooves are provided on the flipping rack (21). Electrically controlled clamping plates (22) are symmetrically installed in each arc-shaped groove. The dust bag body (2) is placed in the arc-shaped groove. The electrically controlled clamping plates (22) are connected to the dust bag body (2). The dust bag body (2) includes a bag mouth ring, a bottom ring, and a bag body. The bottom ring and the bag mouth ring are respectively installed on both ends of the bag body. Both ends of the flipping rack (21) are rotatably connected to the device body (1). A flipping motor is connected to one end of the flipping rack, which is installed on the device body (1).

3. The dust collector bag testing device for a bag filter according to claim 1, characterized in that, The first lead screw (11) is vertically installed inside the device body (1). The two ends of the lifting frame (3) are threaded to the outside of the first lead screw (11). A drive motor is installed on the top of the first lead screw (11). A placement groove (34) is horizontally opened inside the lifting frame (3). A placement opening is opened on the bottom surface of the inner end of the placement groove (34). A support plate (33) is movably connected to the placement opening. A second cylinder (32) is provided on one side of the support plate (33). The second cylinder (32) is installed on the outside of the lifting frame (3). A first cylinder (31) is also installed on the upper side of the second cylinder (32). The telescopic end of the first cylinder (31) is connected to the placement groove (34). An electrically controlled adsorption block is provided on the telescopic end of the first cylinder (31).

4. The dust collector bag testing device for a bag filter according to claim 1, characterized in that, Multiple inner wall grooves (12) are provided. A first connecting sleeve (13) is rotatably connected to the front opening of each inner wall groove (12). A plug-in groove is provided on the bottom side of the first connecting sleeve (13). A second connecting sleeve (15) is provided on the rear side of each inner wall groove (12). A plug-in block is provided at the bottom end of the second connecting sleeve (15). The plug-in blocks are all connected in the plug-in groove and are electrically connected to each other. An inner groove (131) is provided in both the first connecting sleeve (13) and the second connecting sleeve (15). The inner groove (131) is connected to the dust bag body ( 2) Adaptation: A metal contact sensor is installed on the inner wall of the inner groove (131). Rubber clamping plates are provided on the top and bottom of the inner groove (131). The rubber clamping plates are connected to the outside of the bag opening ring and the bottom ring. A synchronous drive belt (132) is connected between the bottom ends of the first connecting sleeves (13). A servo motor is also connected to the bottom end of one of the first connecting sleeves (13). Side wing plates are installed on the second connecting sleeves (15). An electrically controlled linear push rod is connected to the side wing plate. The electrically controlled linear push rod is installed on the inner wall of the inner wall groove (12).

5. A dust collector bag testing device for a bag filter according to claim 3, characterized in that, The device body (1) has two symmetrically installed second lead screws (16) on its inner walls. A drive motor is also installed on the top of the second lead screw (16). A guide rod is provided on one side of the second lead screw (16). A lifting block (17) is movably connected to the outer side of the guide rod and the second lead screw (16). A lifting slot is provided in the lifting block (17). An upper groove is also symmetrically provided on the inner wall of the device body (1). The upper groove, the lifting slot and the placement groove (34) are adapted to each other in size.

6. A dust collector bag testing device for a bag filter according to claim 5, characterized in that, The two ends of the expansion member (4) are connected to the lifting frame (3) and the lifting block (17). The expansion member (4) includes a first frame plate, an upper rotating ring (41) and an expansion frame (44). Multiple upper rotating rings (41) are provided, all of which are rotatably connected to the first frame plate. Insertion holes (42) are provided on the top surface of the upper rotating ring (41). An expansion frame (44) is integrally installed on the bottom surface of the upper rotating ring (41). A drive motor (43) is also provided in the middle position of the first frame plate. A synchronous rotating belt is connected between the outer ring surface of the upper rotating ring (41) and the output end of the drive motor (43). The upper rotating ring (41) is rotatably connected to the first frame plate. The expansion frame (44) is supported in the dust bag body (2).

7. A dust collector bag testing device for a baghouse dust collector according to claim 6, characterized in that, The test piece (5) is movably connected to the upper side slot, the lifting slot, and the placement slot (34). The test piece (5) includes a second frame plate, a frame body (51), a retractable rotating rod (53), an outer sleeve rod (54), and a telescopic probe (55). The frame body (51) is rotatably connected to the second frame plate. A connecting end is provided on the frame body (51), and the connecting end is connected to the insertion hole (42). The retractable rotating rod (53) is rotatably connected inside the frame body (51). Multiple probes are alternately arranged on both sides of the frame body (51). Each probe hole has an inner end fitted with an outer sleeve rod (54). Each outer sleeve rod (54) has a spring-connected telescopic probe rod (55). The front end of the telescopic probe rod (55) is connected to the outer side of the probe hole and contacts the inner wall of the dust bag body (2). The rear end of the telescopic probe rod (55) is connected with a pull rope (56). The other end of the pull rope (56) is wrapped around the outer surface of the take-up and release rotating rod (53). A rotary motor (52) is installed at the top of the take-up and release rotating rod (53).

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