Exhaust gas treatment and fiber impurity separation device for nonwoven fabric drying oven

Abstract

This invention belongs to the field of nonwoven fabric drying oven exhaust gas treatment technology, and discloses an exhaust gas treatment and fiber impurity separation device for nonwoven fabric drying ovens. It includes a nonwoven fabric drying oven body and a separation component connected to the side of the nonwoven fabric drying oven body. This invention injects water into the top of a gathering plate via a transmission component and a water injection component, causing the water to converge towards the center and flow downwards into the exhaust gas flow channel, keeping the channel moist. During the flow of exhaust gas through the channel, fiber impurities come into contact with the moist inner wall of the channel and adhere to it under the action of water. Water is then injected into the top of the gathering plate through spray holes, and the water, carrying the adhered fiber impurities, flows along the exhaust gas flow channel and enters the transmission component for collection. This process avoids the need for manual filter bag replacement, which would disrupt normal production, ensuring workshop air quality and extending the equipment's lifespan.

Description

Technical Field

[0001] This invention belongs to the field of waste gas treatment technology for nonwoven fabric drying ovens, specifically a waste gas treatment and fiber impurity separation device for nonwoven fabric drying ovens. Background Technology

[0002] A nonwoven fabric drying oven is a specialized piece of equipment used in the production process of nonwoven fabrics. It is primarily used to dry, cure, and shape nonwoven fabrics, ensuring they achieve the desired physical properties and appearance quality. It achieves uniform processing through heating and airflow (such as hot air circulation, infrared, or microwave technology) and is widely used in fields such as medical and health, automotive, construction, and household goods. The exhaust gas from nonwoven fabric drying ovens contains fibers. Currently, the fibers in the exhaust gas from nonwoven fabric drying ovens are usually filtered out using physical interception methods, mainly employing multi-stage filtration systems including pre-filters, HEPA high-efficiency filters, and bag filters. However, the resistance of bag filters increases after dust accumulates on the filter bags, increasing fan energy consumption. Regular shutdowns are required to disassemble the filter bags and manually clean or replace them (the frequency depends on the fiber load), affecting continuous production. At the same time, high-temperature exhaust gas environments (such as oven exhaust) may accelerate filter bag aging, increasing replacement costs (PP filter bags typically have a lifespan of only 6-12 months). Fibers detached during cleaning may cause dust pollution in the workshop, posing certain safety hazards. Therefore, a device for exhaust gas treatment and fiber impurity separation from nonwoven fabric drying ovens is proposed. Summary of the Invention

[0003] To address the problems mentioned in the background art, the present invention provides a waste gas treatment and fiber impurity separation device for nonwoven fabric drying ovens, which solves the problems of increased resistance, increased fan energy consumption, and the need for periodic shutdowns to disassemble and manually clean or replace the filter bags (the frequency of which depends on the fiber load) in existing bag dust collectors, thus affecting continuous production.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a waste gas treatment and fiber impurity separation device for a nonwoven fabric drying oven, comprising a nonwoven fabric drying oven body, and further comprising:

[0005] A separation component is connected to the side of the nonwoven fabric drying oven body;

[0006] A transmission assembly, which is fixedly mounted to the bottom of the separation assembly;

[0007] A cleaning component, wherein the cleaning component is disposed inside the transmission component;

[0008] Water injection pipe, which is installed on the transmission assembly;

[0009] The water injection component is connected to the transmission component and the separation component, and injects water from the transmission component into the top of the separation component to keep the interior of the separation component moist.

[0010] The separation component includes a separation chamber, which is connected to the main body of the nonwoven fabric drying oven. Two spiral blades are fixedly installed inside the separation chamber, and the two spiral blades and the separation chamber form a waste gas flow channel.

[0011] The top of the spiral blade is fixed with a concave plate in the middle;

[0012] The water injection assembly includes an annular tube fixed inside the upper part of the separation chamber. The annular tube has spray holes on its inner circumference and a connecting pipe connected to the outside of the annular tube. The connecting pipe is in communication with the transmission assembly.

[0013] Preferably, the transmission assembly includes a storage box fixed to the outside of the separation chamber via a connecting frame, the top of the storage box is fitted with a cover plate, and a water tank is fixedly installed inside the storage box;

[0014] The water tank is filled with water, and in the initial state, the water level inside the water tank is flush with the top of the water tank.

[0015] The water storage tank is equipped with a movable push ring inside, a connecting rod is fixedly mounted at the bottom of the push ring, a stabilizing frame is fixedly mounted at the bottom of the connecting rod, and a cylinder is fixedly mounted on the outside of the storage tank, with its output end connected to the stabilizing frame.

[0016] Preferably, the lower end of the separation chamber is funnel-shaped and is located in the water within the water storage tank.

[0017] Preferably, a collection filter screen is fixedly installed between the water storage tank and the storage tank;

[0018] The upward movement of the push ring causes the water in the water storage tank to rise and overflow the water storage tank. Floating fibrous impurities enter the storage tank and are intercepted by the collection filter.

[0019] Preferably, the transmission assembly further includes a water passage hole opened on the outside of the water storage tank. The water passage hole is located at the bottom of the push ring. A valve plate for sealing the water passage hole is connected to the side of the water passage hole through a rubber connector. A connecting hole is opened on the outside of the rubber connector.

[0020] The outer diameter of the valve plate is larger than the inner diameter of the water passage.

[0021] Preferably, when the push ring moves upward, the water in the storage tank enters the lower end of the water storage tank through the water inlet and the connecting hole;

[0022] When the push ring moves downward, it squeezes the water valve plate at the lower end to block the water passage. Water is injected into the top of the gathering plate through the connecting pipe, the ring pipe and the spray hole. The water moves downward along the exhaust gas flow channel formed by the two spiral blades, so that the inner wall of the exhaust gas flow channel is in a moist state.

[0023] Preferably, the cleaning assembly includes a movable rod movably disposed inside the water storage tank, a second docking member is fixedly mounted on the push ring, the second docking member is sleeved on the outside of the movable rod, and a spiral groove is formed at the lower end of the movable rod;

[0024] The inner wall of the second docking member is provided with protrusions, which move inside the spiral groove.

[0025] Preferably, the upper end of the movable rod is provided with a reciprocating spiral groove, the lower end of the separation chamber is movably fitted with a funnel ring, and the outside of the funnel ring is fixedly fitted with a first connecting piece sleeved on the upper end of the movable rod;

[0026] The inner wall of the first docking member is provided with protrusions, which move inside the reciprocating spiral groove.

[0027] Preferably, a first guide plate is fixedly installed on the outside of the water storage tank, a second guide plate is fixedly installed on the inner wall of the storage tank, and a drain pipe is provided on the outside of the storage tank;

[0028] Water overflows the storage tank, pushing fibrous impurities to be collected on the collection filter screen. Guided by the first guide plate, the water moves along the collection filter screen and carries the fibrous impurities out through the drain pipe, while some water falls into the storage tank through the gap between the first and second guide plates.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] This invention injects water into the top of the gathering plate through a transmission component and a water injection component, and the water gathers towards the center and moves downward into the exhaust gas flow channel, keeping the exhaust gas flow channel in a moist state. The exhaust gas generated by the nonwoven fabric drying oven body passes through the top of the separation chamber and enters the exhaust gas flow channel, rotating downward. Because the exhaust gas flow channel is in a moist state, during the flow of the exhaust gas, fiber impurities come into contact with the moist inner wall of the exhaust gas flow channel and adhere to the inner wall of the exhaust gas flow channel under the action of water. Then, water is injected into the top of the gathering plate through the spray hole. The water flows along the exhaust gas flow channel and carries the attached fiber impurities into the interior of the transmission component for collection. In this process, manual replacement of filter bags is avoided, which affects normal production, ensuring the quality of the workshop air and improving the service life of the equipment.

[0031] In this invention, as the cylinder pushes the pushing ring upward, water in the storage tank enters the lower end of the water tank through the water inlet and connecting hole. When the pushing ring moves downward, the water at the lower end of the water tank enters the top of the separation chamber through the connecting pipe, the annular pipe, and the spray hole. The water moves downward along the spiral blade, carrying low-density fiber impurities such as polypropylene and wool attached to the exhaust gas flow channel into the interior of the water tank and floats on the water surface. By pushing the ring upward, the water and fiber impurities overflow the water tank and are discharged into the interior of the storage tank, thus achieving the purpose of automatic collection of fiber impurities. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the connection structure between the main body of the nonwoven fabric drying oven and the separation component of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the mating structure of the separation component and the transmission component of the present invention;

[0035] Figure 4 This is a schematic diagram of the disassembled structure of the separation component of the present invention;

[0036] Figure 5 This is a schematic cross-sectional view of the separation component of the present invention;

[0037] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0038] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point C;

[0039] Figure 8 This is a schematic diagram of the disassembly structure of the cleaning component of the present invention.

[0040] In the diagram: 1. Nonwoven fabric drying oven body; 2. Cleaning assembly; 21. Funnel ring; 22. First docking piece; 23. Second docking piece; 24. Movable rod; 25. Spiral groove; 26. Reciprocating spiral groove; 3. Transmission assembly; 31. Storage box; 32. Collection filter; 33. Connecting frame; 34. Cover plate; 35. Water tank; 36. Pushing ring; 37. Connecting rod; 38. Stabilizing frame; 311. Rubber connector; 312. Connecting hole; 313. Valve plate; 321. First guide plate; 322. Second guide plate; 323. Sewage pipe; 4. Separation assembly; 41. Separation chamber; 42. Spiral blade; 43. Gathering plate; 5. Water injection assembly; 51. Connecting pipe; 52. Ring pipe; 53. Spray hole; 6. Water injection pipe. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] like Figures 1 to 8 As shown, the present invention provides a waste gas treatment and fiber impurity separation device for a nonwoven fabric drying oven, including a nonwoven fabric drying oven body 1, and further comprising:

[0043] Separation component 4 is connected to the side of the nonwoven fabric drying oven body 1;

[0044] Transmission assembly 3 is fixedly mounted at the bottom of separation assembly 4;

[0045] Cleaning component 2 is located inside the transmission component 3;

[0046] Water injection pipe 6 is installed on transmission assembly 3;

[0047] Water injection component 5 is connected to transmission component 3 and separation component 4. Water is injected into the top of separation component 4 from transmission component 3 to keep the inside of separation component 4 moist.

[0048] Among them, the separation component 4 includes a separation chamber 41, which is connected to the nonwoven fabric drying oven body 1. Two spiral blades 42 are fixedly installed inside the separation chamber 41, and the two spiral blades 42 and the separation chamber 41 form a waste gas flow channel.

[0049] A converging plate 43 with a central depression is fixedly mounted on the top of the spiral blade 42;

[0050] The water injection assembly 5 includes an annular pipe 52 fixed inside the upper part of the separation chamber 41. The inner circumference of the annular pipe 52 is provided with spray holes 53. The outer side of the annular pipe 52 is connected to a connecting pipe 51, which is connected to the transmission assembly 3.

[0051] Water is injected into the top of the gathering plate 43 through the transmission component 3 and the water injection component 5, and then gathered towards the center and moved downward into the exhaust gas flow channel, keeping the exhaust gas flow channel in a moist state. The exhaust gas generated by the nonwoven fabric drying oven body 1 passes through the top of the separation chamber 41 and enters the exhaust gas flow channel, rotating and moving downward. Since the exhaust gas flow channel is in a moist state, during the flow of the exhaust gas, fiber impurities come into contact with the moist inner wall of the exhaust gas flow channel and adhere to the inner wall of the exhaust gas flow channel under the action of water. Then, water is injected into the top of the gathering plate 43 through the spray hole 53. The water flows along the exhaust gas flow channel and carries the attached fiber impurities into the interior of the transmission component 3 for collection. In this process, manual replacement of filter bags is avoided, which affects normal production, ensuring the quality of the workshop air and improving the service life of the equipment. Meanwhile, the exhaust gas enters the transmission component 3 along the exhaust gas flow channel and is discharged for further treatment.

[0052] like Figure 3 and Figure 5 As shown, the transmission assembly 3 includes a storage box 31 fixed to the outside of the separation chamber 41 via a connecting frame 33. A cover plate 34 is installed on the top of the storage box 31, and a water tank 35 is fixed inside the storage box 31.

[0053] The interior of the water storage tank 35 is filled with water, and in the initial state, the water level inside the water storage tank 35 is flush with the top of the water storage tank 35.

[0054] The water storage tank 35 is internally fitted with a push ring 36, the bottom of the push ring 36 is fixedly fitted with a connecting rod 37, the bottom of the connecting rod 37 is fixedly fitted with a stabilizing frame 38, and the storage tank 31 is externally fitted with a cylinder, the output end of which is connected to the stabilizing frame 38.

[0055] The lower end of the separation chamber 41 is funnel-shaped and is located in the water inside the water storage tank 35.

[0056] A collection filter 32 is fixed between the water storage tank 35 and the storage tank 31;

[0057] The upward movement of the push ring 36 causes the water in the water storage tank 35 to rise and overflow the water storage tank 35. Floating fiber impurities enter the storage tank 31 and are intercepted by the collection filter 32.

[0058] The waste gas generated inside the nonwoven fabric drying oven body 1 is injected into the separation chamber 41 to separate the fiber impurities in the waste gas. The waste gas enters the water in the water storage tank 35 along the separation chamber 41. Since the water level inside the water storage tank 35 is initially level with the top of the water storage tank 35, the waste gas enters the water in the water storage tank 35 through the bottom of the separation chamber 41 and forms bubbles, which carry the fiber impurities at the bottom of the separation chamber 41 away from the inside of the separation chamber 41, causing the fiber impurities to float on the water surface of the water storage tank 35. The gas is discharged through the pipe connected to the cover plate 34 for further treatment.

[0059] At the same time, the cylinder drives the stabilizer 38, connecting rod 37 and pushing ring 36 to move upward, pushing the water in the water storage tank 35 to move upward. During the upward movement, the fiber impurities floating on the water surface overflow the water storage tank 35 and are intercepted and treated by the collection filter 32. The overflowing water is stored inside the storage tank 31.

[0060] like Figure 3 , Figure 5 and Figure 8 As shown, the transmission assembly 3 also includes a water passage hole opened on the outside of the water storage tank 35. The water passage hole is located at the bottom of the push ring 36. The side of the water passage hole is connected to a valve plate 313 for sealing the water passage hole through a rubber connector 311. A connecting hole 312 is opened on the outside of the rubber connector 311.

[0061] The outer diameter of valve plate 313 is larger than the inner diameter of water passage hole;

[0062] When the push ring 36 moves upward, the water in the storage tank 31 enters the lower end of the water storage tank 35 through the water passage and the connecting hole 312;

[0063] When the push ring 36 moves down, the water valve plate 313 at the lower end is squeezed to block the water passage. Water is injected into the top of the gathering plate 43 through the connecting pipe 51, the ring pipe 52 and the spray hole 53. The water moves down along the exhaust gas flow channel formed by the two spiral blades 42, so that the inner wall of the exhaust gas flow channel is in a wet state.

[0064] As the cylinder pushes the pushing ring 36 upward, water in the storage tank 31 enters the lower end of the water storage tank 35 through the water passage and connecting hole 312. When the pushing ring 36 moves downward, the water at the lower end of the water storage tank 35 enters the top of the separation chamber 41 through the connecting pipe 51, the annular pipe 52 and the spray hole 53. The water moves downward along the spiral blade 42, carrying low-density fiber impurities such as polypropylene and wool attached in the exhaust gas flow channel into the interior of the water storage tank 35 and floats on the water surface. By pushing the ring 36 upward, the water and fiber impurities overflow the water storage tank 35 and are discharged into the interior of the storage tank 31, achieving the purpose of automatic collection of fiber impurities. At the same time, the fiber impurities collected on the collection filter screen 32 can be cleaned by periodically lifting the cover plate 34.

[0065] like Figure 2 and Figure 8 As shown, the cleaning component 2 includes a movable rod 24 movably disposed inside the water storage tank 35, a second docking piece 23 fixedly mounted on the push ring 36, the second docking piece 23 being sleeved on the outside of the movable rod 24, and a spiral groove 25 being provided at the lower end of the movable rod 24;

[0066] The inner wall of the second docking member 23 is provided with a protrusion, which moves inside the spiral groove 25;

[0067] The upper end of the movable rod 24 is provided with a reciprocating spiral groove 26, and the lower end of the separation chamber 41 is movably fitted with a funnel ring 21. The funnel ring 21 is fixedly fitted with a first connecting piece 22 fitted on the upper end of the movable rod 24.

[0068] The inner wall of the first docking member 22 is provided with a protrusion, which moves inside the reciprocating spiral groove 26.

[0069] By pushing the ring 36 upward, the protrusion on the inner wall of the second docking member 23 engages with the spiral groove 25, causing the movable rod 24 to rotate. During the rotation, the reciprocating spiral groove 26 engages with the protrusion on the inner wall of the first docking member 22, thereby causing the first docking member 22 and the funnel ring 21 to move up and down along the reciprocating spiral groove 26, causing the water surface of the spiral groove 25 to form an outward expanding wave from the middle, and under the action of the wave, pushing the fibrous impurities floating on the water surface.

[0070] like Figure 2 As shown, a first guide plate 321 is fixedly installed on the outside of the water storage tank 35, a second guide plate 322 is fixedly installed on the inner wall of the storage tank 31, and a drain pipe 323 is provided on the outside of the storage tank 31.

[0071] Water overflows the water tank 35, pushing fibrous impurities to be collected on the collection filter screen 32. Guided by the first guide plate 321, the water moves along the collection filter screen 32 and carries the fibrous impurities out through the drain pipe 323. Some water falls into the storage tank 31 through the gap between the first guide plate 321 and the second guide plate 322.

[0072] Working principle and usage process of this invention:

[0073] Water is injected into the top of the gathering plate 43 through the transmission component 3 and the water injection component 5, and then gathered towards the center and moved downward into the exhaust gas flow channel, so that the exhaust gas flow channel is in a wet state. The exhaust gas generated by the nonwoven fabric drying oven body 1 passes through the top of the separation chamber 41 and enters the exhaust gas flow channel and rotates downward. Since the exhaust gas flow channel is in a wet state, the fiber impurities come into contact with the wet inner wall of the exhaust gas flow channel during the flow of the exhaust gas, and are attached to the inner wall of the exhaust gas flow channel under the action of water. Then, water is injected into the top of the gathering plate 43 through the spray hole 53. The water flows along the exhaust gas flow channel and carries the attached fiber impurities into the interior of the transmission component 3 for collection. During this process, manual replacement of filter bags is avoided, which affects normal production.

[0074] Since the water level inside the water tank 35 is initially level with the top of the water tank 35, the exhaust gas enters the water in the water tank 35 through the bottom of the separation chamber 41 and forms bubbles, which carry the fiber impurities at the bottom of the separation chamber 41 out of the separation chamber 41 and make the fiber impurities float on the water surface of the water tank 35. The gas is discharged through the pipe connected to the cover plate 34 for further treatment.

[0075] At the same time, the cylinder drives the stabilizer 38, the connecting rod 37 and the push ring 36 to move upward, pushing the water in the water storage tank 35 to move upward. During the upward movement, the fiber impurities floating on the water surface overflow the water storage tank 35 and are intercepted and treated by the collection filter screen 32. The overflowing water is stored inside the storage tank 31.

[0076] As the cylinder pushes the pushing ring 36 upward, water in the storage tank 31 enters the lower end of the water tank 35 through the water passage and connecting hole 312. When the pushing ring 36 moves downward, the water at the lower end of the water tank 35 enters the top of the separation chamber 41 through the connecting pipe 51, the annular pipe 52 and the spray hole 53. The water moves downward along the spiral blade 42, carrying low-density fiber impurities such as polypropylene and wool attached in the exhaust gas flow channel into the interior of the water tank 35 and floats on the water surface. By pushing the ring 36 upward, the water and fiber impurities overflow the water tank 35 and are discharged into the interior of the storage tank 31, thus achieving the purpose of automatic collection of fiber impurities.

[0077] By pushing the ring 36 upward, the protrusion on the inner wall of the second docking member 23 engages with the spiral groove 25, causing the movable rod 24 to rotate. During the rotation, the reciprocating spiral groove 26 engages with the protrusion on the inner wall of the first docking member 22, thereby causing the first docking member 22 and the funnel ring 21 to move up and down along the reciprocating spiral groove 26, causing the water surface of the spiral groove 25 to form an outward expanding wave from the middle, and under the action of the wave, pushing the fibrous impurities floating on the water surface.

[0078] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0079] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment and fiber impurity separation device for a nonwoven fabric drying oven, comprising a nonwoven fabric drying oven body (1), characterized in that, Also includes: Separation component (4), the separation component (4) is connected to the side of the nonwoven oven body (1); Transmission assembly (3), which is fixedly mounted on the bottom of separation assembly (4); Cleaning component (2), the cleaning component (2) is disposed inside the transmission component (3); Water injection pipe (6), which is installed on the transmission assembly (3); Water injection component (5), which is connected to the transmission component (3) and the separation component (4), injects water from the transmission component (3) into the top of the separation component (4) to keep the interior of the separation component (4) moist. The separation component (4) includes a separation chamber (41), which is connected to the main body (1) of the nonwoven fabric drying oven. Two spiral blades (42) are fixed inside the separation chamber (41), and the two spiral blades (42) and the separation chamber (41) form a waste gas flow channel. The top of the spiral blade (42) is fixed with a converging plate (43) with a recessed center. The water injection assembly (5) includes an annular pipe (52) fixed inside the upper end of the separation chamber (41). The annular pipe (52) has spray holes (53) on its inner circumference. The annular pipe (52) is connected to a connecting pipe (51) on its outer side. The connecting pipe (51) is connected to the transmission assembly (3).

2. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 1, characterized in that: The transmission assembly (3) includes a storage box (31) fixed to the outside of the separation chamber (41) via a connecting frame (33), a cover plate (34) is installed on the top of the storage box (31), and a water tank (35) is fixed inside the storage box (31). The water storage tank (35) is filled with water, and in the initial state, the water level inside the water storage tank (35) is flush with the top of the water storage tank (35); The water tank (35) is equipped with a movable push ring (36), and a connecting rod (37) is fixedly mounted at the bottom of the push ring (36). A stabilizing frame (38) is fixedly mounted at the bottom of the connecting rod (37). A cylinder is fixedly mounted on the outside of the storage box (31), and its output end is connected to the stabilizing frame (38).

3. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 2, characterized in that: The lower end of the separation chamber (41) is funnel-shaped and is located in the water in the water storage tank (35).

4. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 3, characterized in that: A collection filter (32) is fixed between the water storage tank (35) and the storage tank (31). The upward movement of the push ring (36) pushes the water in the water storage tank (35) upward and overflows the water storage tank (35). Floating fiber impurities enter the storage tank (31) and are intercepted by the collection filter (32).

5. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 2, characterized in that: The transmission assembly (3) also includes a water passage hole opened outside the water storage tank (35). The water passage hole is located at the bottom of the push ring (36). A valve plate (313) for sealing the water passage hole is connected to the side of the water passage hole through a rubber connector (311). A connecting hole (312) is opened on the outside of the rubber connector (311). The outer diameter of the valve plate (313) is larger than the inner diameter of the water passage hole.

6. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 5, characterized in that: When the push ring (36) moves upward, the water in the storage box (31) enters the lower end of the water tank (35) through the water passage hole and the connecting hole (312); When the push ring (36) moves down, it squeezes the water valve plate (313) at the lower end to block the water passage. Water is injected into the top of the gathering plate (43) through the connecting pipe (51), the ring pipe (52) and the spray hole (53). The water moves down along the exhaust gas flow channel formed by the two spiral blades (42), so that the inner wall of the exhaust gas flow channel is in a wet state.

7. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 2, characterized in that: The cleaning component (2) includes a movable rod (24) movably disposed inside the water tank (35), a second docking part (23) fixedly mounted on the push ring (36), the second docking part (23) being sleeved on the outside of the movable rod (24), and a spiral groove (25) being provided at the lower end of the movable rod (24). The inner wall of the second docking member (23) is provided with a protrusion, which moves inside the spiral groove (25).

8. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 7, characterized in that: The upper end of the movable rod (24) is provided with a reciprocating spiral groove (26), and the lower end of the separation chamber (41) is movably fitted with a funnel ring (21). The funnel ring (21) is fixedly fitted with a first connecting piece (22) on the upper end of the movable rod (24). The inner wall of the first docking member (22) is provided with a protrusion, which moves inside the reciprocating spiral groove (26).

9. The waste gas treatment and fiber impurity separation device for nonwoven fabric drying oven according to claim 4, characterized in that: The water storage tank (35) is fixedly equipped with a first guide plate (321) on the outside, the storage tank (31) is fixedly equipped with a second guide plate (322) on the inner wall, and the storage tank (31) is provided with a drain pipe (323) on the outside. Water overflows the water tank (35) and pushes the fiber impurities to be collected on the collection filter (32). Under the guidance of the first guide plate (321), the water moves along the collection filter (32) and carries the fiber impurities through the drain pipe (323) and is discharged. Some water falls into the storage tank (31) through the gap between the first guide plate (321) and the second guide plate (322).

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