A sealing detection device for a pipeline used in a dust collection and treatment system

Abstract

The present invention belongs to the technical field of sealing detection devices, and specifically relates to a sealing detection device for a pipeline used in a dust collection and treatment system, comprising a detection main frame, wherein both sides of the detection main frame are connected with a detection outer tube and a dust collecting pipeline through a connecting seat, the detection outer tube is sleeved on the outside of the dust collecting pipeline, a detection box body is installed on the upper side of the detection main frame, adjustment mechanisms are arranged at both ends of the detection main frame, a pressing mechanism is arranged in the middle of the detection main frame, and a detection device is arranged in the middle of the inner side of the detection box body; the problem to be solved by the present invention is that the current pipeline sealing detection method usually adopts inflation pressure detection, and the pipeline needs to be removed when performing the detection, and the detection operation is relatively troublesome; the solution of the present invention is to connect the dust collecting pipeline and the detection outer tube through the detection main frame, so that the dust collecting pipeline can be detected in sections and bodies during detection, and ultra-long distance detection and screening can be carried out as needed during detection, and then the leakage can be quickly detected by segmented detection.

Description

Technical Field

[0001] The invention belongs to the technical field of sealing detection devices, and in particular relates to a sealing detection device for a pipeline used in a dust collection and processing system. Background Art

[0002] The dust collection and treatment system mainly includes the central dust collection system, the industrial building dust removal system, the industrial negative pressure dust collection system, the dust collector system, etc. The central dust collection system is an integrated and systematic dust removal equipment, which has both the dust removal function and the dust storage function. The industrial building dust removal system is mainly a local mechanical exhaust system that captures and purifies the dust generated in the production process. The industrial negative pressure dust collection system, also known as the central vacuum cleaning system, is a system that uses the negative pressure principle for cleaning. The dust collector system includes various types of dust collectors, such as cyclone dust collectors, electrostatic dust collectors, etc.

[0003] At present, various dust collection and treatment systems need to transport the sucked dust and powder through pipes. After long-term use, there will be gaps and leaks in the pipes.

[0004] At present, the pipeline sealing detection method usually adopts inflation pressure detection, and the pipeline needs to be removed during the detection, and the detection operation is relatively troublesome. Therefore, it is necessary to design a sealing detection device for the pipeline of the dust collection and treatment system to solve the above problem. Summary of the invention

[0005] The object of the present invention is to provide a sealing detection device for a pipeline used in a dust collection and processing system to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sealing detection device for a pipeline used in a dust collection and treatment system, comprising a detection main frame, two sides of the detection main frame are connected with a detection outer tube and a dust collection pipeline through a connecting seat, the detection outer tube is sleeved on the outside of the dust collection pipeline, a detection box body is installed on the upper side of the detection main frame, two ends of the detection main frame are provided with an adjustment mechanism, the middle part of the detection main frame is provided with a pressing mechanism, the middle part of the inner side of the detection box body is provided with a detection device, the lower end of the detection device is connected with the inside of the detection main frame, the inner side of the connecting seat is provided with a ventilation plate, the inner side of the detection main frame is provided with a shielding plate, the position of the shielding plate corresponds to the position of the ventilation plate, and the shielding plate is installed in the detection main frame through the adjustment mechanism;

[0007] The surface of the ventilation plate is provided with a detection through hole and a dust collecting hole, and the surface of the shielding plate is provided with a detection hole and a connecting hole, the positions of the detection hole and the detection through hole correspond to each other and to the position between the detection outer tube and the dust collecting pipe, and the positions of the connecting hole and the dust collecting hole correspond to the inner side position of the dust collecting pipe;

[0008] The adjustment mechanism includes a lifting electric rod fixedly installed in the detection box body, guide rods fixed at both ends of the baffle plate and a guide sleeve fixed on the inner wall of the detection main frame. The guide rod is slidably installed in the guide sleeve, and the piston rod of the lifting electric rod is fixedly connected to one end of the guide rod.

[0009] Preferably, a support column is fixedly mounted on the inner wall of the detection outer tube, and one end of the support column is supported on the outer side of the dust collecting pipe.

[0010] Preferably, an outer sealing ring is provided on the outer side of the baffle plate corresponding to the connecting seat, an inner sealing ring is provided on the outer side of the ventilation plate corresponding to the positions of the detection through hole and the dust collecting hole, and a sealing gasket is provided at one end of the detection outer tube and the dust collecting tube.

[0011] Preferably, adjustment mechanisms are provided at the four corners of the detection main frame, and two pressing mechanisms are correspondingly provided on the inner side of the detection main frame.

[0012] Preferably, the detection device is located in the middle of the detection box body, and the detection device includes a pressure sensor and a detection air pump.

[0013] Preferably, the clamping mechanism includes a reinforcing pressure plate slidably installed in the detection main frame, a motor fixed in the detection box body, and a screw rod rotatably installed in the detection main frame through a bearing, a nut is sleeved on the outer side of the screw rod, a push rod is rotatably installed on the outer side of the nut, one end of the push rod is rotatably installed on the reinforcing pressure plate, and a pressure pad is provided on one side of the reinforcing pressure plate.

[0014] Preferably, a guide groove is provided on the inner wall of the detection main frame, and guide blocks are fixedly installed at both ends of the reinforcement pressure plate, and the guide blocks are slidably installed in the guide groove.

[0015] Preferably, threads are provided at both ends of the screw, and the threads at both ends of the screw have opposite rotation directions, and limit plates are provided at positions corresponding to the threads at both ends of the screw.

[0016] Preferably, the pressure pad includes a main seat fixed on the reinforcing pressure plate and a pushing head slidably installed on one end of the main seat, a main pressure plate is slidably installed on the inner side of the main seat, one end of the pushing head is fixedly connected to the main pressure plate, a pressure rod is fixedly installed on one side of the main pressure plate, and a first spring is supported on one side of the pressure pad.

[0017] Preferably, a secondary pressure plate is slidably installed on the inner side of the reinforced pressure plate, one end of the first spring is supported on the secondary pressure plate, one end of the pressure rod is slidably installed in the middle of the secondary pressure plate, a second spring is provided on one side of the secondary pressure plate, and a third spring is provided at one end of the pressure rod, the second spring and the third spring are both supported on the inner side of the reinforced pressure plate, push blocks are fixedly installed on both ends of the secondary pressure plate, a sliding block is slidably connected to one side of the push block, a fourth spring is fixedly installed on one side of the sliding block, and the fourth spring is fixed on the inner wall of the reinforced pressure plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Through the designed detection main frame, the dust collecting pipes and the detection outer pipes are connected by the detection main frame. During the detection, the dust collecting pipes can be detected in sections and bodies. During the detection, ultra-long distance detection and screening can be carried out as needed, and then segmented detection can be carried out to quickly detect the leak.

[0020] 2. Through the designed adjustment mechanism, the baffle is driven to rise and fall by the lifting electric rod during use, so as to adjust the position of the detection hole, the connecting hole, the detection through hole and the dust collecting hole, thereby facilitating the energy-saving adjustment of the connection between the detection outer tube and the dust collecting pipe, thereby facilitating the detection of multiple dust collecting pipes.

[0021] 3. Through the designed pressing mechanism, when in use, the motor drives the screw to rotate, and the screw drives the nut and the reinforced pressure plate to move, and the reinforced pressure plate and the pressure pad are pressed on the baffle plate, so that the baffle plate and the ventilation plate fit more closely, so that the detection hole, the connecting hole, the detection through hole and the dust collecting hole fit more closely to ensure sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the detection box body of the present invention;

[0024] Figure 3 It is a schematic diagram of the shielding plate structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the ventilation plate of the present invention;

[0026] Figure 5 For the present invention Figure 2 A is an enlarged schematic diagram of the cross-section structure;

[0027] Figure 6 It is a schematic diagram of the top view structure of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the pressure pad of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the reinforced pressing plate of the present invention;

[0030] Fig. 9 It is a schematic diagram of the pipeline structure of the present invention;

[0031] In the figure: 1. detection main frame; 10. detection box body; 11. detection outer tube; 12. dust collecting pipe; 13. support column; 14. detection equipment; 15. sealing pad; 16. connecting seat; 2. adjustment mechanism; 21. lifting electric rod; 22. guide rod; 23. guide sleeve; 24. shielding plate; 241. detection hole; 242. connecting hole; 243. outer sealing ring; 25. ventilation plate; 251. detection through hole; 252. dust collecting hole; 253. inner sealing ring ;3. Clamping mechanism;31. Motor;32. Reinforced pressure plate;33. Pressure pad;34. Screw;35. Nut;36. Push rod;37. Guide block;38. Guide groove;39. Limiting plate;331. Main seat;332. Push head;333. Main pressure plate;334. Pressure rod;3341. Third spring;335. First spring;336. Auxiliary pressure plate;3361. Second spring;337. Push block;338. Slider;339. Fourth spring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figures 1 to 9The present invention provides a technical solution: a sealing detection device for a pipeline used in a dust collection and processing system, comprising a detection main frame 1, wherein both sides of the detection main frame 1 are connected with a detection outer tube 11 and a dust collecting pipeline 12 through a connecting seat 16, the detection outer tube 11 is sleeved on the outer side of the dust collecting pipeline 12, a detection box body 10 is installed on the upper side of the detection main frame 1, and adjustment mechanisms 2 are arranged at both ends of the detection main frame 1, a pressing mechanism 3 is arranged in the middle of the detection main frame 1, a detection device 14 is arranged in the middle of the inner side of the detection box body 10, and the lower end of the detection device 14 is communicated with the inside of the detection main frame 1, a ventilation plate 25 is arranged on the inner side of the connecting seat 16, and a shielding plate 24 is arranged on the inner side of the detection main frame 1, and the position of the shielding plate 24 corresponds to the position of the ventilation plate 25, and the shielding plate 24 is installed in the detection main frame 1 through the adjusting mechanism 2; the surface of the ventilation plate 25 is provided with a detection through hole 251 and a dust collecting hole 252, and the surface of the shielding plate 24 is provided with a detection hole 241 and a connecting hole 242. The positions of the through hole 242, the detection hole 241, and the detection through hole 251 correspond to each other and correspond to the position between the detection outer tube 11 and the dust collecting pipe 12, and the positions of the connecting hole 242 and the dust collecting hole 252 correspond to the inner side position of the dust collecting pipe 12; the adjusting mechanism 2 includes a lifting electric rod 21 fixedly installed in the detection box body 10, a guide rod 22 fixed at both ends of the baffle plate 24, and a guide sleeve 23 fixed on the inner wall of the detection main frame 1, the guide rod 22 is slidably installed in the guide sleeve 23, the piston rod of the lifting electric rod 21 is fixedly connected to one end of the guide rod 22, and the baffle plate 24 is driven to slide by the lifting electric rod 21, so that the detection through hole 251 is connected with the detection hole 241, the connecting hole 242 and the dust collecting hole 252 are staggered and closed with each other, or the connecting hole 242 and the dust collecting hole 252 are connected for ventilation and dust, and the detection hole 241 and the detection through hole 251 are staggered to close the position between the detection outer tube 11 and the dust collecting pipe 12.

[0034] From the above description, it can be seen that the present invention has the following beneficial effects: when in use, by detecting the connection between the main frame 1 and the dust collecting pipe 12 and the detection outer pipe 11, the dust collecting pipe 12 can be detected in sections and bodies during detection, and ultra-long distance detection and screening can be performed as needed during detection, and then segmented detection can be performed to quickly detect the leakage.

[0035] For further information, see Figures 1 to 9The inner wall of the detection outer tube 11 is fixedly installed with a support column 13, and one end of the support column 13 is supported on the outer side of the dust collecting pipe 12, which is convenient for the detection outer tube 11 and the dust collecting pipe 12 to be installed; the outer side of the shielding plate 24 is provided with an outer sealing ring 243 corresponding to the connecting seat 16, and the outer side of the ventilation plate 25 is provided with an inner sealing ring 253 corresponding to the position of the detection through hole 251 and the dust collecting hole 252 to ensure the sealing ability during ventilation, and one end of the detection outer tube 11 and the dust collecting pipe 12 are provided with a sealing gasket 15, which is convenient for strengthening the detection when in use. The seal at the connection between the outer tube 11 and the dust collecting duct 12; the four corners of the detection main frame 1 are provided with adjustment mechanisms 2, and the inner side of the detection main frame 1 is correspondingly provided with two pressing mechanisms 3, so as to ensure that the baffle plate 24 is stably pressed on the ventilation plate 25 when in use; the detection device 14 is located in the middle of the detection box body 10, and the detection device 14 includes a pressure sensor and a detection air pump. When in use, the detection air pump is used to ventilate the detection main frame 1. After the ventilation is completed, the change of air pressure is detected by the pressure sensor to judge whether it is sealed.

[0036] The adjustment mechanism 2 using the above technical solution drives the baffle plate 24 to rise and fall through the lifting electric rod 21 when in use, thereby adjusting the position between the detection hole 241, the connecting hole 242 and the detection through hole 251 and the dust collecting hole 252, thereby facilitating energy-saving adjustment of the connection between the detection outer tube 11 and the dust collecting pipe 12, thereby facilitating the detection of multiple dust collecting pipes 12.

[0037] Example 2: Please refer to Figures 1 to 9 As shown, on the basis of the first embodiment, the present invention provides a technical solution: the pressing mechanism 3 includes a reinforcing pressure plate 32 slidably mounted in the detection main frame 1, a motor 31 fixed in the detection box body 10 and a screw 34 rotatably mounted in the detection main frame 1 through a bearing, a nut 35 is sleeved on the outer side of the screw 34, a push rod 36 is rotatably mounted on the outer side of the nut 35, one end of the push rod 36 is rotatably mounted on the reinforcing pressure plate 32, a pressure pad 33 is arranged on one side of the reinforcing pressure plate 32, the screw 34 is driven to rotate by the motor 31, and the screw 34 drives the nut 35 and the reinforcing pressure plate 32 to slide from One side of the shielding plate 24 is moved away, and then the shielding plate 24 is driven to slide by the lifting electric rod 21, so as to adjust the position of the shielding plate 24; a guide groove 38 is provided on the inner wall of the detection main frame 1, and guide blocks 37 are fixedly installed at both ends of the reinforcing pressure plate 32, and the guide blocks 37 are slidably installed in the guide groove 38, so that the reinforcing pressure plate 32 is more stable when moving; both ends of the screw rod 34 are provided with threads, and the threads at both ends of the screw rod 34 are rotated in opposite directions, and limit plates 39 are provided at the positions corresponding to the threads at both ends of the screw rod 34, so as to facilitate the rotation of the push rods 36 at both ends and drive the shielding plate 24 to move;

[0038] For further information, see Figure 2 , Figure 5 and Figure 7 The pressure pad 33 includes a main seat 331 fixed on the reinforcing pressure plate 32 and a pushing head 332 slidably installed at one end of the main seat 331, a main pressure plate 333 is slidably installed on the inner side of the main seat 331, one end of the pushing head 332 is fixedly connected to the main pressure plate 333, a pressure rod 334 is fixedly installed on one side of the main pressure plate 333, and a first spring 335 is supported on the main pressure plate 333 for buffering when in use. A secondary pressure plate 336 is slidably installed on the inner side of the reinforcing pressure plate 32, one end of the first spring 335 is supported on the secondary pressure plate 336, one end of the pressure rod 334 is slidably installed in the middle of the secondary pressure plate 336, a second spring 3361 is provided on one side of the secondary pressure plate 336, and one end of the pressure rod 334 is provided A third spring 3341 is provided, and the second spring 3361 and the third spring 3341 are all supported on the inner side of the reinforced pressure plate 32, and are assisted by the second spring 3361 and the third spring 3341 to support the auxiliary pressure plate 336 and the pressure rod 334 to enhance the buffering effect, and push blocks 337 are fixedly installed at both ends of the auxiliary pressure plate 336, and a slider 338 is slidably connected to one side of the push block 337, and a fourth spring 339 is fixedly installed on one side of the slider 338, and the fourth spring 339 is fixed on the inner wall of the reinforced pressure plate 32, and the push block 337 is driven by the auxiliary pressure plate 336 to slide on the slider 338 for damping and shock absorption, and the slider 338 compresses the fourth spring 339 for further shock absorption and buffering, thereby enhancing the buffering and shock absorption capacity without increasing the spring strength.

[0039] The clamping mechanism 3 adopts the above technical solution. When in use, the motor 31 drives the screw 34 to rotate, and the screw 34 drives the nut 35 and the reinforcing pressure plate 32 to move. The reinforcing pressure plate 32 and the pressure pad 33 are pressed on the baffle plate 24, so that the baffle plate 24 and the ventilation plate 25 fit more closely, so that the detection hole 241, the connecting hole 242, the detection through hole 251 and the dust collecting hole 252 fit more tightly to ensure sealing.

[0040] The working principle and use process of the present invention are as follows: when in use, the dust collecting duct 12 is installed on the dust collecting equipment in use, and the detection outer tube 11 is sleeved on the dust collecting duct 12. The connection between the dust collecting ducts 12 is connected to each other through the detection main frame 1, and the detection outer tube 11 and the dust collecting duct 12 are both installed in the connection seat 16 on the detection main frame 1 and sealed by the sealing gasket 15. When in use, the connecting hole 242 is connected with the dust collecting hole 252 for ventilation and dust passing, thereby facilitating transportation. At the same time, the detection hole 241 and the detection through hole 251 are staggered to close the position between the detection outer tube 11 and the dust collecting duct 12. When detection is needed, the screw rod 34 is first driven to rotate by the motor 31, and the screw 34 drives the nut 35 and the reinforcing pressure plate 32 to slide and move away from one side of the shielding plate 24, and then the shielding plate 24 is driven to slide by the lifting electric rod 21, so that the detection through hole 251 is connected with the detection hole 241, and the connecting hole 242 and the dust collecting hole 252 are staggered and closed, and then The motor 31 drives the screw 34 to rotate in the opposite direction, driving the reinforcing pressure plate 32 and the pressure pad 33 to move and press on the baffle plate 24. The main pressure plate 333 and the auxiliary pressure plate 336 guide the push head 332 to press on the first spring 335, the second spring 3361, and the third spring 3341 for buffering when the force is applied. At the same time, the auxiliary pressure plate 336 drives the push block 337 to slide on the slider 338 for damping and shock absorption, and makes the slider 338 compress the fourth spring 339 for further shock absorption and buffering, thereby enhancing the buffering and shock absorption capacity without increasing the spring strength, thereby reducing the vibration when the pressure pad 33 is pressed on the baffle plate 24, and the elastic sealing of the outer sealing ring 243 and the inner sealing ring 253 can ensure the sealing ability of the baffle plate 24 after adjustment. During detection, the detection hole 241 and the detection through hole 251 are used to ventilate the position between the detection outer tube 11 and the dust collection pipe 12, and the position of whether there is a leakage is judged according to the change of its air pressure, and its seal is detected.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A sealing detection device for a pipeline used in a dust collection and processing system, characterized in that: The invention comprises a detection main frame (1), wherein both sides of the detection main frame (1) are connected to detection outer tubes (11) via a connecting seat (16), the detection outer tubes (11) are sleeved on the outside of a dust collecting pipe (12), a detection box body (10) is installed on the upper side of the detection main frame (1), adjustment mechanisms (2) are provided at both ends of the detection main frame (1), a pressing mechanism (3) is provided in the middle of the detection main frame (1), a detection device (14) is provided in the middle of the inner side of the detection box body (10), the lower end of the detection device (14) is communicated with the inside of the detection main frame (1), a ventilation plate (25) is provided on the inner side of the connecting seat (16), a shielding plate (24) is provided on the inner side of the detection main frame (1), the position of the shielding plate (24) corresponds to the position of the ventilation plate (25), and the shielding plate (24) is installed in the detection main frame (1) via the adjustment mechanism (2); The surface of the ventilation plate (25) is provided with a detection through hole (251) and a dust collecting hole (252); the surface of the shielding plate (24) is provided with a detection hole (241) and a communication hole (242); the positions of the detection hole (241) and the detection through hole (251) correspond to each other and to the position between the detection outer tube (11) and the dust collecting pipe (12); the positions of the communication hole (242) and the dust collecting hole (252) correspond to the inner side of the dust collecting pipe (12); The adjustment mechanism (2) comprises a lifting electric rod (21) fixedly mounted in the detection box body (10), guide rods (22) fixed at both ends of the shielding plate (24), and a guide sleeve (23) fixed to the inner wall of the detection main frame (1); the guide rod (22) is slidably mounted in the guide sleeve (23); and the piston rod of the lifting electric rod (21) is fixedly connected to one end of the guide rod (22); The lifting electric rod (21) drives the shielding plate (24) to slide, and after adjustment, the detection through hole (251) is connected with the detection hole (241), the connecting hole (242) and the dust collecting hole (252) are mutually staggered and closed, or the connecting hole (242) and the dust collecting hole (252) are connected to ventilate and ventilate, and the detection hole (241) and the detection through hole (251) are staggered to close the position between the detection outer tube (11) and the dust collecting tube (12); An outer sealing ring (243) is provided on the outer side of the shielding plate (24) corresponding to the connection seat (16); an inner sealing ring (253) is provided on the outer side of the ventilation plate (25) corresponding to the detection through hole (251) and the dust collection hole (252); and a sealing pad (15) is provided on one end of each of the detection outer tube (11) and the dust collection tube (12); The detection device (14) is located in the middle of the detection box body (10), and the detection device (14) comprises a pressure sensor and a detection air pump.

2. A sealing detection device for a pipeline for a dust collection system according to claim 1, characterized in that: A support column (13) is fixedly mounted on the inner wall of the detection outer tube (11), and one end of the support column (13) is supported on the outer side of the dust collection pipe (12).

3. The sealing detection device for a pipeline used in a dust collection system according to claim 1, characterized in that: Adjustment mechanisms (2) are provided at the four corners of the detection main frame (1), and two pressing mechanisms (3) are correspondingly provided on the inner side of the detection main frame (1).

4. The sealing detection device for a pipeline used in a dust collection system according to claim 1, characterized in that: The pressing mechanism (3) comprises a reinforcing pressure plate (32) slidably mounted in the detection main frame (1), a motor (31) fixed in the detection box body (10), and a screw rod (34) rotatably mounted in the detection main frame (1) via a bearing, a nut (35) being sleeved on the outer side of the screw rod (34), a push rod (36) being rotatably mounted on the outer side of the nut (35), one end of the push rod (36) being rotatably mounted on the reinforcing pressure plate (32), and a pressure pad (33) being provided on one side of the reinforcing pressure plate (32).

5. A sealing detection device for a pipeline used in a dust collection system according to claim 4, characterized in that: A guide groove (38) is provided on the inner wall of the detection main frame (1), and guide blocks (37) are fixedly mounted on both ends of the reinforcing pressure plate (32), and the guide blocks (37) are slidably mounted in the guide groove (38).

6. The sealing detection device for a pipeline used in a dust collection system according to claim 4, characterized in that: Both ends of the screw rod (34) are provided with threads, and the threads at the two ends of the screw rod (34) have opposite rotation directions. Limiting plates (39) are provided at positions corresponding to the threads at the two ends of the screw rod (34).

7. The sealing detection device for a pipeline used in a dust collection system according to claim 4, characterized in that: The pressure pad (33) comprises a main seat (331) fixed on the reinforcing pressure plate (32) and a pushing head (332) slidably mounted on one end of the main seat (331); a main pressure plate (333) is slidably mounted on the inner side of the main seat (331); one end of the pushing head (332) is fixedly connected to the main pressure plate (333); a pressure rod (334) is fixedly mounted on one side of the main pressure plate (333); and a first spring (335) is supported on one side of the pressure pad (33).

8. The sealing detection device for a pipeline used in a dust collection system according to claim 7, characterized in that: A secondary pressure plate (336) is slidably mounted on one side of the reinforcing pressure plate (32); one end of the first spring (335) is supported on the secondary pressure plate (336); one end of the pressure rod (334) is slidably mounted on the middle part of the secondary pressure plate (336); a second spring (3361) is provided on one side of the secondary pressure plate (336); a third spring (3341) is provided on one end of the pressure rod (334); the second spring (3361) and the third spring (3341) are both supported on one side of the reinforcing pressure plate (32); push blocks (337) are fixedly mounted on both ends of the secondary pressure plate (336); a slider (338) is slidably connected to one side of the push block (337); a fourth spring (339) is fixedly mounted on one side of the slider (338); and the fourth spring (339) is fixed on the inner wall of the reinforcing pressure plate (32).

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