Quick-release valve assembly for tail gas treatment

Abstract

The utility model discloses a quick release type valve assembly for tail gas treatment, which belongs to the technical field of valves and comprises a valve body, the valve body is provided with at least one butt joint pipe, and the butt joint pipe is provided with a plurality of first clamping parts at intervals in the circumferential direction; at least part of the connecting pipe is arranged on the periphery of the butt-joint pipe in a sleeving mode, and a plurality of second clamping parts are arranged on the inner circumferential wall of the connecting pipe and matched with the corresponding first clamping parts so that the butt-joint pipe and the connecting pipe can be connected. And the quick release device is movably connected with the butt joint pipe, the quick release device is provided with an abutting part located in the butt joint pipe, and the quick release device moves to drive the abutting part to move and selectively cooperate with the second clamping part, so that the first clamping part is separated from the cooperation with the second clamping part. According to the quick-release valve assembly for tail gas treatment, extra tools are not needed when the connecting pipe and the butt-joint pipe are disassembled and assembled, the connecting pipe and the butt-joint pipe are convenient to disassemble and assemble, and the disassembling and assembling time of the connecting pipe and the butt-joint pipe is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, and specifically relates to quick detachable valve assembly for tail gas treatment. BACKGROUND

[0002] In related art, in industrial application, especially in the scene of tail gas treatment and other needs of frequent maintenance and inspection, the traditional valve assembly is usually assembled and fixed by screw connection or flange connection, these connection modes can provide sufficient strength and sealing performance, but the installation and dismounting process is complex, and needs to use special tools (such as wrench, screwdriver, etc.) to operate, which is time-consuming and laborious. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art is solved, for this purpose, one purpose of the utility model is to propose a quick detachable valve assembly for tail gas treatment.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] The utility model provides quick detachable valve assembly for tail gas treatment, include: valve body, at least one butt joint pipe is provided to valve body, the butt joint pipe is provided with the first clamping portion that is spaced apart in the circumference, the connecting pipe is at least partial sleeve set in the circumference of butt joint pipe, the inner peripheral wall of connecting pipe is provided with a plurality of second clamping portion, a plurality of second clamping portion is matched with corresponding first clamping portion respectively to connect butt joint pipe and connecting pipe, quick detachable device, quick detachable device is movedly connected with butt joint pipe, quick detachable device is provided with the abutment portion in butt joint pipe, quick detachable device moves to drive the abutment portion moves and can selectively with second clamping portion cooperation, to make first clamping portion separate from the cooperation of second clamping portion.

[0006] According to the quick detachable valve assembly for tail gas treatment of the utility model, when connecting the butt joint pipe and the connecting pipe, only the connecting pipe needs to be moved to make the first clamping portion and the second clamping portion one-to-one corresponding and cooperating, so that the connecting pipe and the butt joint pipe can be connected. At the same time, when dismounting the butt joint pipe and the connecting pipe, only the quick detachable device needs to be moved to release the cooperation of the first clamping portion and the second clamping portion. Then, the connecting pipe and the butt joint pipe can be dismounted by moving the connecting pipe. Therefore, no additional tools are needed for dismounting the connecting pipe and the butt joint pipe, and the connecting pipe and the butt joint pipe are convenient to dismount, which reduces the dismounting time of the connecting pipe and the butt joint pipe.

[0007] Further, the butt joint pipe is provided with a plurality of clamping holes penetrating in the radial direction and spaced apart in the circumferential direction, the clamping holes are configured as the first clamping portions, and the inner peripheral wall of the connecting pipe is provided with a plurality of clamping blocks spaced apart in the circumferential direction, the clamping blocks are configured as the second clamping portions.

[0008] Further, the inner circumferential wall of the connecting pipe is provided with a plurality of radially extending connecting holes, each of the plurality of connecting holes corresponding to one of the plurality of clamping blocks, the clamping block being movably received in the connecting hole, the clamping block being movable to selectively have a portion thereof outside the connecting hole or the clamping block being received in the connecting hole.

[0009] Further, a reset spring is provided in the connecting hole, one end of the reset spring being connected to the connecting pipe and the other end of the reset spring being connected to the clamping block, the reset spring being adapted to drive the clamping block to move towards the clamping hole.

[0010] Further, the quick release device comprises: a first rotating pipe rotatably arranged in the docking pipe, an inner circumferential wall of the first rotating pipe being provided with a first thread; a moving pipe movably arranged in the docking pipe, an outer circumferential wall of the moving pipe being provided with a second thread, the first thread cooperating with the second thread; a plurality of connecting rods corresponding to the plurality of clamping holes, one end of each of the plurality of connecting rods being connected to the moving pipe, the other end of each of the plurality of connecting rods being provided with an abutting block, the abutting block being configured as the abutting portion, the abutting block being adapted to drive the clamping block to disengage from the clamping hole when the abutting block is received in the clamping hole.

[0011] Further, the quick release device further comprises: a second rotating pipe rotatably sleeved on an outer circumferential wall of the docking pipe, the docking pipe being provided with a movable slot extending in a circumferential direction and penetrating in a radial direction; a connecting block movably arranged in the movable slot, the connecting block being adapted to connect the first rotating pipe and the second rotating pipe.

[0012] Further, in an axial direction, a height of the abutting block gradually decreases in a direction away from the clamping block.

[0013] Further, the connecting pipe comprises: a first pipe body; a second pipe body connected to the first pipe body in an axial direction, an inner diameter of the second pipe body being greater than an inner diameter of the first pipe body and forming a stepped surface at an end of the first pipe body, an inner circumferential wall of the second pipe body being provided with the clamping block; wherein the valve assembly further comprises: a first sealing ring arranged on the stepped surface, a free end of the first sealing ring being adapted to abut against an end surface of the docking pipe; a second sealing ring arranged on an end surface of the second pipe body, a free end of the second sealing ring being adapted to abut against an end surface of the second rotating pipe.

[0014] The other advantages, objects, and features of the present application will become apparent from the following specification, and it is intended to be covered by the following claims, and it will be apparent that changes can be made in the application without departing from the scope of the application, and it is intended to cover what is described in the specification and its procedural equivalents. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is described below with the following drawings:

[0016] Fig. 1 It is an exploded view of the butt joint pipe and the quick release device of the present application;

[0017] Fig. 2 It is a sectional view of the quick release device of the present application;

[0018] Fig. 3 It is a sectional view of the connecting pipe of the present application.

[0019] The signs in the drawings are as follows:

[0020] 10, butt joint pipe; 11, clamping hole; 12, movable slot;

[0021] 21, first pipe body; 22, second pipe body; 221, clamping block; 222, reset spring;

[0022] 30, quick release device; 31, first rotating pipe; 32, moving pipe; 33, connecting rod; 34, abutting block; 35, second rotating pipe; 351, sealing block; 36, connecting block;

[0023] 41, first sealing ring; 42, second sealing ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is described below with the following drawings:

[0025] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without these specific details. In other instances, well-known structures, circuits, materials or processes have not been described in detail in order to avoid obscuring the present application.

[0026] Reference throughout this specification to "one embodiment", "an embodiment", "one design", or "a design" means that a particular feature, structure, or characteristic described in connection with the embodiment or design is included in at least one embodiment of the application. Therefore, appearances of the phrases "one embodiment", "an embodiment", "one design", or "a design" in various places throughout this specification are not necessarily all referring to the same embodiment or design. Furthermore, the particular features, structures, or characteristics can be combined in any suitable

[0027] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0028] Embodiment one:

[0029] As shown in Figs. 1-3 The utility model provides a quick detach formula valve assembly for tail gas treatment, include: valve body, connecting pipe and quick detach device 30, valve body is provided with at least one butt joint pipe 10, butt joint pipe 10 is provided with in the circumference interval a plurality of first clamping portion, at least part of connecting pipe is covered to butt joint pipe 10's outer periphery, and the inner peripheral wall of connecting pipe is provided with a plurality of second clamping portion, a plurality of second clamping portion is matched with corresponding first clamping portion respectively to connect butt joint pipe 10 and connecting pipe, quick detach device 30 is movedly connected with butt joint pipe 10, and quick detach device 30 is provided with the abutment in butt joint pipe 10, and quick detach device 30 moves to drive abutment to move and can selectably with second clamping portion cooperation, to make first clamping portion disengages with second clamping portion's cooperation.

[0030] In some embodiments, the valve body comprises at least one connecting pipe 10, the connecting pipe 10 is provided with a plurality of first clamping portions which are circumferentially spaced, the connecting pipe is a pipe sleeve set on the outer circumference of the connecting pipe 10, the inner wall of the connecting pipe is provided with a plurality of second clamping portions which correspond to the plurality of first clamping portions on the connecting pipe 10 respectively and can cooperate with each other to firmly connect the connecting pipe 10 and the connecting pipe together, the quick release device 30 is movably connected with the connecting pipe 10, and the quick release device 30 is internally provided with an abutting portion which moves axially when the quick release device 30 moves, and the abutting portion moves to selectively contact or disengage the second clamping portions of the connecting pipe, so that the second clamping portions are disengaged from the first clamping portions when the abutting portion contacts the second clamping portions and exerts a force, thereby releasing the locking state between the connecting pipe 10 and the connecting pipe and achieving quick disassembly.

[0031] It can be understood that the locking is achieved through the mechanical cooperation between the first clamping portions (on the connecting pipe 10) and the second clamping portions (on the connecting pipe), so as to ensure that the connecting pipe 10 and the connecting pipe can be stably connected under normal operating conditions. The abutting portion of the quick release device 30 can exert a force on the second clamping portions during movement to force the second clamping portions to deform or shift, thereby releasing the locking effect on the first clamping portions. In this way, the user can easily release the connection between the connecting pipe 10 and the connecting pipe by operating the quick release device 30 without using tools or other complex steps.

[0032] According to the quick-release valve assembly for tail gas treatment, when the connecting pipe 10 and the connecting pipe are connected, only the connecting pipe needs to be moved to correspond and cooperate the plurality of first clamping portions and the second clamping portions one by one, so as to connect the connecting pipe and the connecting pipe 10. At the same time, when the connecting pipe 10 and the connecting pipe are disassembled, only the quick release device 30 needs to be moved to release the cooperation between the first clamping portions and the second clamping portions, and then the connecting pipe can be disassembled from the connecting pipe 10 by moving the connecting pipe. Therefore, the connecting pipe and the connecting pipe 10 do not need to use additional tools when disassembled, and the connecting pipe and the connecting pipe 10 are convenient to disassemble, which reduces the disassembly time of the connecting pipe and the connecting pipe 10.

[0033] Embodiment two:

[0034] In this embodiment, the connecting pipe 10 is provided with a plurality of clamping holes 11 which penetrate in the radial direction and are circumferentially spaced, and the clamping holes 11 are configured as the first clamping portions. The inner circumferential wall of the connecting pipe is provided with a plurality of clamping blocks 221 which are circumferentially spaced, and the clamping blocks 221 are configured as the second clamping portions.

[0035] In some embodiments, when the connecting pipe is sleeved outside the docking pipe 10, the clamping blocks 221 inside the connecting pipe are guided to the positions of the corresponding clamping holes 11 on the docking pipe 10. Since the clamping blocks 221 are distributed circumferentially along the inner wall of the connecting pipe, as the connecting pipe is pushed, the clamping blocks 221 are automatically aligned and inserted into the clamping holes 11, completing the locking.

[0036] Of course, by operating the quick release device 30, the abutting portion can be moved to exert a force on the clamping blocks 221, forcing the clamping blocks 221 to exit or deform from the clamping holes 11, releasing the locked state, so that the user can easily remove the connecting pipe from the docking pipe 10 without using additional tools.

[0037] According to some embodiments of the present application, the inner circumferential wall of the connecting pipe is provided with a plurality of connection holes extending in the radial direction, and the plurality of connection holes correspond one-to-one to the plurality of clamping blocks 221. The clamping blocks 221 are movably accommodated in the connection holes, and the clamping blocks 221 are moved to selectively allow part of the clamping blocks 221 to be located outside the connection holes or to accommodate the clamping blocks 221 in the connection holes. A reset spring 222 is arranged in the connection hole, one end of the reset spring 222 is connected to the connecting pipe, and the other end of the reset spring 222 is connected to the clamping block 221. The reset spring 222 is adapted to drive the clamping block 221 to move towards the clamping hole 11.

[0038] In some embodiments, when the connecting pipe is sleeved outside the docking pipe 10 and is pushed, the clamping blocks 221 are partially extended out of the connection holes under the action of the reset spring 222 and are guided to the positions of the clamping holes 11 of the docking pipe 10. Once the clamping blocks 221 are aligned with the corresponding clamping holes 11, the reset spring 222 continues to push the clamping blocks 221 into the clamping holes 11, completing the locking process. This ensures that even in the case of slight misalignment, the clamping blocks 221 can successfully find and enter the clamping holes 11, enhancing the fault tolerance of the system.

[0039] When disassembly is required, the quick release device 30 operates the abutting portion to exert a radial outward pressure on the clamping blocks 221, overcoming the elastic force of the reset spring 222, and completely retracts the clamping blocks 221 into the connection holes. At this time, the clamping blocks 221 are disengaged from the clamping holes 11 of the docking pipe 10, releasing the locked state and allowing the user to easily remove the connecting pipe from the docking pipe 10.

[0040] When the quick release device 30 is released, since there is no longer an external force acting on the clamping blocks 221, the reset spring 222 again pushes the clamping blocks 221 to move outward, so that the clamping blocks 221 return to the initial position, ready for the next locking operation.

[0041] It can be understood that the reset spring 222 ensures that the clamping block 221 is always in the best working position, reduces the risk of locking failure caused by misoperation or slight misalignment, and does not need to manually adjust the position of the clamping block 221. The reset spring 222 can automatically complete the in-out action of the clamping block 221, greatly simplifying the operation steps of the user, improving the working efficiency. Of course, even in the case of vibration or slight deformation, the reset spring 222 can help the clamping block 221 to keep the correct locking state, increase the adaptability and durability of the valve assembly.

[0042] Embodiment three:

[0043] This embodiment is based on embodiment two, and the quick release device 30 comprises a first rotating pipe 31, a moving pipe 32 and a connecting rod 33. The first rotating pipe 31 is rotatably arranged in the docking pipe 10, and the inner circumferential wall of the first rotating pipe 31 is provided with a first thread. The moving pipe 32 is movably arranged in the docking pipe 10, and the outer circumferential wall of the moving pipe 32 is provided with a second thread. The first thread cooperates with the second thread. The connecting rod 33 is configured to correspond to the plurality of clamping holes 11 one by one. The same side of the plurality of connecting rods 33 is connected with the moving pipe 32 respectively. The same side of the other end of the plurality of connecting rods 33 is respectively provided with an abutting block 34. The abutting block 34 is configured as an abutting part. When the abutting block 34 is accommodated in the clamping hole 11, the abutting block 34 is suitable for driving the clamping block 221 to disengage from the clamping hole 11.

[0044] In some embodiments, in the initial state, the clamping block 221 partially protrudes from the connecting hole and is inserted into the clamping hole 11 of the docking pipe 10 to complete the locking. At this time, the first rotating pipe 31 and the moving pipe 32 are in a relative position, so that the abutting block 34 does not interfere with the position of the clamping block 221.

[0045] When the user rotates the first rotating pipe 31, the first thread in the first rotating pipe 31 interacts with the second thread on the outer circumference of the moving pipe 32, so that the moving pipe 32 moves axially along the docking pipe 10. The movement of the moving pipe 32 will drive all the connecting rods 33 and the abutting blocks 34 connected thereto to move synchronously. With the movement, the abutting blocks 34 gradually approach the clamping blocks 221 and finally enter the clamping holes 11.

[0046] It should be noted that the abutting block 34 is connected with the connecting rod 33 and extends towards the inner wall of the connecting pipe 10. When the abutting block 34 is not aligned with the clamping hole 11, the free end of the abutting block 34 is in contact with the inner wall of the connecting pipe 10, so that the connecting rod 33 is deformed and has a deformation force. When the abutting block 34 moves to be aligned with the clamping hole 11, the deformation force of the connecting rod 33 can drive the abutting block 34 to move towards the clamping hole 11. When the abutting block 34 moves towards the clamping hole 11, the abutting block 34 applies a radially outward force to the clamping block 221 to force the clamping block 221 to retract into the connecting hole against the elastic force of the return spring 222, thereby disengaging the clamping hole 11 of the connecting pipe 10 and releasing the locked state.

[0047] After the connecting pipe and the connecting pipe 10 are disassembled, the user can reverse rotate the first rotating pipe 31 to move the moving pipe 32 in the reverse direction, withdraw the abutting block 34 from the clamping hole 11, so as to facilitate the next connection of the connecting pipe 10 and the connecting pipe.

[0048] It is worth mentioning that the inner circumferential wall of the connecting pipe 10 is provided with a sliding groove extending in the axial direction, and the outer circumferential wall of the moving pipe 32 is provided with a sliding block movably accommodated in the sliding groove. Therefore, the inner circumferential wall of the sliding groove can limit the outer circumferential wall of the sliding block, so that the moving pipe 32 can stably move in the axial direction.

[0049] According to some embodiments of the present application, the quick release device 30 further comprises a second rotating pipe 35 and a connecting block 36. The second rotating pipe 35 is rotatably sleeved on the outer periphery of the connecting pipe 10. The connecting pipe 10 is provided with a movable groove 12 extending in the circumferential direction and penetrating in the radial direction. The connecting block 36 is movably arranged in the movable groove 12, and the connecting block 36 is adapted to connect the first rotating pipe 31 and the second rotating pipe 35.

[0050] In some embodiments, the second rotating pipe 35 is connected with the first rotating pipe 31 through the connecting pipe. Therefore, the rotation of the second rotating pipe 35 can drive the first rotating pipe 31 to rotate, thereby driving the moving pipe 32 to move in the axial direction, and further driving the abutting block 34 to move in the radial direction. Without directly contacting or operating the first rotating pipe 31 in the connecting pipe 10, the user can conveniently and quickly complete the disassembly and assembly of the valve assembly, and improve the operation experience of the user.

[0051] It is worth mentioning that the outer circumferential wall of the connecting pipe 10 is provided with two sealing grooves extending in the circumferential direction and spaced in the axial direction. The two sealing grooves are respectively located on both sides of the movable groove 12 in the axial direction. The two ends of the second rotating pipe 35 in the axial direction are respectively provided with two sealing blocks 351 extending in the radial direction. The two sealing blocks 351 are respectively accommodated in the two sealing grooves. The outer circumferential wall of the sealing block 351 and the inner circumferential wall of the sealing groove are further provided with sealing rubber.

[0052] Embodiment four:

[0053] The embodiment is based on the embodiment three, and the height of the abutting block 34 gradually decreases in the direction away from the clamping block 221 in the axial direction.

[0054] It can be understood that the height of the abutting block 34 gradually decreases in the direction away from the clamping block 221, so that the abutting block 34 forms an inclined guide surface in the axial direction towards the side of the moving pipe 32. When the moving pipe 32 moves away from the clamping hole 11, the guide surface cooperates with the inner wall of the clamping hole 11, thereby guiding the abutting block 34 to disengage from the clamping hole 11.

[0055] Therefore, rotating the second rotating pipe 35 can drive the abutting block 34 to disengage from the clamping hole 11, without manually pressing the abutting block 34 to disengage from the clamping hole 11, thereby facilitating the use of the valve assembly.

[0056] In other embodiments, the height of the clamping block 221 gradually decreases in the direction towards the abutting block 34 in the axial direction, so that the clamping block 221 forms a guide surface towards the side of the abutting block, so that the docking pipe 10 can cooperate with the guide surface when the docking pipe 10 is docked with the connecting pipe, thereby facilitating the docking of the docking pipe 10 with the connecting pipe.

[0057] According to some embodiments of the present application, the connecting pipe comprises: a first pipe body 21 and a second pipe body 22, the second pipe body 22 is connected with the first pipe body 21 in the axial direction, the inner diameter of the second pipe body 22 is larger than that of the first pipe body 21 and a stepped surface is formed at the end of the first pipe body 21, and the inner peripheral wall of the second pipe body 22 is provided with a clamping block 221; wherein the valve assembly further comprises: a first sealing ring 41 and a second sealing ring 42, the first sealing ring 41 is arranged on the stepped surface, and the free end of the first sealing ring 41 is adapted to abut against the end surface of the docking pipe 10, and the second sealing ring 42 is arranged on the end surface of the second pipe body 22, and the free end of the second sealing ring 42 is adapted to abut against the end surface of the second rotating pipe 35.

[0058] In some embodiments, when the docking pipe 10 is inserted into the connecting pipe, the first sealing ring 41 is compressed between the stepped surface of the first pipe body 21 and the end surface of the docking pipe 10, forming a first sealing barrier to prevent fluid leakage from the gap therebetween; the second sealing ring 42 is located on the end surface of the second pipe body 22 and in contact with the end surface of the second rotating pipe 35, providing a second sealing barrier to ensure good sealing effect even under external environmental influence.

[0059] Preferably, the first sealing ring 41 and the second sealing ring 42 are made of corrosion-resistant and high-temperature-resistant materials (such as fluororubber FFKM or polytetrafluoroethylene PTFE) to adapt to chemical corrosion in harsh working conditions such as processing tail gas, and the first sealing ring 41 and the second sealing ring 42 can be deformed when subjected to appropriate pressure to fill possible small gaps, thereby achieving effective sealing.

[0060] The stepped surface formed at the end of the first pipe body 21 not only provides a mounting position for the first sealing ring 41, but also ensures that the first sealing ring 41 can uniformly distribute pressure when under pressure, improving the sealing effect, and by providing two sealing rings at different positions, the redundancy of the sealing system is increased, so that even if one sealing fails, the other can still maintain basic sealing performance, improving overall reliability.

[0061] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and detail without departing from the scope defined by the claims of the present application.

Claims

1. A quick disconnect valve assembly for exhaust gas treatment, comprising: The valve assembly comprises: a valve body provided with at least one connecting pipe provided with a plurality of first clamping portions spaced in the circumferential direction; a connecting pipe, at least a portion of the connecting pipe is sleeved on the outer periphery of the connecting pipe, the inner peripheral wall of the connecting pipe is provided with a plurality of second clamping portions, and the plurality of second clamping portions are matched with the corresponding first clamping portions respectively to connect the connecting pipe and the connecting pipe; a quick release device movably connected with the connecting pipe, the quick release device is provided with an abutting portion located in the connecting pipe, and the quick release device is moved to drive the abutting portion to move and selectively cooperate with the second clamping portion, so that the first clamping portion is separated from the second clamping portion.

2. The quick-release valve assembly for exhaust gas treatment of claim 1, wherein, The connecting pipe is provided with a plurality of clamping holes penetrating in the radial direction and spaced in the circumferential direction, and the clamping holes are configured as the first clamping portions. The inner peripheral wall of the connecting pipe is provided with a plurality of clamping blocks spaced in the circumferential direction, and the clamping blocks are configured as the second clamping portions.

3. The quick-release valve assembly for exhaust gas treatment of claim 2, wherein, The inner peripheral wall of the connecting pipe is provided with a plurality of connection holes extending in the radial direction, and the plurality of connection holes are one-to-one corresponding to the plurality of clamping blocks. The clamping block is movably accommodated in the connection hole. The clamping block is moved to selectively make part of the clamping block located outside the connection hole or make the clamping block accommodated in the connection hole.

4. The quick-release valve assembly for exhaust gas treatment of claim 3, wherein, The connection hole is provided with a reset spring, one end of the reset spring is connected with the connecting pipe, the other end of the reset spring is connected with the clamping block, and the reset spring is suitable for driving the clamping block to move towards the clamping hole.

5. The quick-release valve assembly for exhaust gas treatment of claim 4, wherein, The quick release device comprises: a first rotating pipe rotatably arranged in the connecting pipe, the inner peripheral wall of the first rotating pipe is provided with a first thread; a moving pipe movably arranged in the connecting pipe, the outer peripheral wall of the moving pipe is provided with a second thread, and the first thread and the second thread are matched; a plurality of connecting rods configured to correspond to the plurality of clamping holes one by one. The same side end of the plurality of connecting rods is connected with the moving pipe respectively, and the same side of the other end of the plurality of connecting rods is provided with an abutting block respectively, and the abutting block is configured as the abutting portion. When the abutting block is accommodated in the clamping hole, the abutting block is suitable for driving the clamping block to separate from the clamping hole.

6. The quick-release valve assembly for exhaust gas treatment of claim 5, wherein, The quick release device further comprises: a second rotating pipe rotatably sleeved on the outer periphery of the connecting pipe, and the connecting pipe is provided with a movable slot extending in the circumferential direction and penetrating in the radial direction; a connecting block movably arranged in the movable slot, and the connecting block is suitable for connecting the first rotating pipe and the second rotating pipe.

7. The quick-release valve assembly for exhaust gas treatment of claim 6, wherein, In the axial direction, the height of the abutting block gradually decreases in the direction away from the clamping block.

8. The quick-release valve assembly for exhaust gas treatment of claim 6, wherein, The connecting pipe comprises: a first pipe body; a second pipe body connected with the first pipe body in the axial direction, the inner diameter of the second pipe body is larger than the inner diameter of the first pipe body and forms a stepped surface at the end of the first pipe body, and the inner peripheral wall of the second pipe body is provided with the clamping block; wherein The valve assembly further comprises: A first sealing ring is arranged on the step surface, and a free end of the first sealing ring is adapted to abut against an end surface of the butt joint pipe; A second sealing ring is arranged on an end surface of the second pipe body, and a free end of the second sealing ring is adapted to abut against an end surface of the second rotating pipe.

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