Innocent treatment equipment for processing waste gas of thermal insulation material

Abstract

The invention belongs to the technical field of thermal insulation material waste gas treatment, and particularly relates to thermal insulation material processing waste gas harmless treatment equipment which comprises a tower body, a gas outlet port is fixedly formed in the top of the tower body, a gas inlet port is fixedly formed in the bottom of the tower body, a groove shaft is arranged in the tower body, and a containing box is arranged outside the groove shaft. A plurality of sprayers are fixedly mounted in the containing box, the internal structures of the sprayers are the same, the spraying ends of the sprayers are flush with the outer wall of the containing box, and a rotary spraying assembly is arranged in the groove shaft; when the spray head is blocked, the dredging assembly drives the poking rod to conduct self-adaptive dredging operation on the spray head, and the dredging assembly and the poking rod are matched with each other, so that when waste gas generated by heat preservation material processing is sprayed and washed, the phenomenon that dirt is formed and the spray nozzle of the spray head is blocked due to the fact that adhering objects adhere to and accumulate on the surface of the spray nozzle can be prevented; the washing operation on the processing waste gas of the thermal insulation material can be more facilitated.

Description

Technical Field

[0001] This invention belongs to the field of waste gas treatment technology for thermal insulation materials, specifically a device for harmless treatment of waste gas from thermal insulation material processing. Background Technology

[0002] Thermal insulation materials are a class of functional materials with low thermal conductivity that can impede heat transfer. Their core function is to reduce heat loss through conduction, convection, and radiation, thereby achieving energy-saving insulation and temperature control. They are widely used in industries such as construction, cold chain logistics, and equipment manufacturing, and can be divided into inorganic insulation materials, organic insulation materials, and composite insulation materials.

[0003] The harmless treatment of waste gas from the processing of thermal insulation materials refers to the process of treating pollutants such as dust, volatile organic compounds, and acid and alkaline gases generated during the foaming, cutting, curing, and grinding of thermal insulation materials such as rock wool, polyurethane, and phenolic foam. This process involves a combination of technologies including classified collection, multi-stage pretreatment, deep purification, waste heat recovery, and emission compliance. The goal is to convert harmful pollutants into harmless substances or separate and remove them, ultimately ensuring that the waste gas meets national environmental emission standards. In the initial stage of the harmless treatment process, the waste gas is usually sprayed through a scrubbing tower.

[0004] A scrubbing tower, also known as a spray tower, is an environmentally friendly pretreatment device that separates pollutants through gas-liquid contact mass transfer. Its core function is to introduce mineral fiber dust and adhesive dust generated during the cutting and grinding of insulation materials into the scrubbing tower along with the exhaust gas. The exhaust gas then comes into contact with atomized scrubbing liquid (such as water, acid or alkali solutions). The atomized scrubbing liquid encapsulates the particles, causing them to agglomerate into larger particles and settle. This transfers the dust, harmful gases, and other pollutants from the exhaust gas generated during insulation material processing into the liquid phase, achieving preliminary purification of the exhaust gas and preventing clogging of subsequent zeolite rotors or catalysts. This is a preliminary purification step in the harmless treatment of exhaust gas from insulation material processing.

[0005] In existing technologies, when the nozzles inside the scrubbing tower spray and wash the exhaust gas generated from the processing of thermal insulation materials, the exhaust gas contains certain viscous substances, such as phenolic substances in phenolic foam exhaust gas and unreacted resin particles in polyurethane exhaust gas. When the washing liquid comes into contact with these viscous substances, certain deposits will form. These deposits may adhere to the nozzle surface and gradually accumulate, forming dirt, reducing the cross-sectional area of ​​the flow channel, and eventually causing the nozzle to become completely blocked, thus affecting the washing operation of the exhaust gas from the processing of thermal insulation materials.

[0006] Therefore, the present invention provides a device for harmless treatment of waste gas from the processing of thermal insulation materials. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a harmless treatment device for waste gas from the processing of thermal insulation materials, comprising a tower body, an air outlet fixedly installed at the top of the tower body, an air inlet fixedly installed at the bottom of the tower body, a groove shaft inside the tower body, a receiving box outside the groove shaft, multiple nozzles fixedly installed inside the receiving box, the internal structure of the multiple nozzles being identical, and the spraying ends of the multiple nozzles being flush with the outer wall of the receiving box, a rotating spray assembly inside the groove shaft, the rotating spray assembly being used to drive the multiple nozzles to spray liquid to wash the waste gas generated during the processing of thermal insulation materials, and a blockage removal assembly outside the groove shaft, the blockage removal assembly including multiple poking rods, the blockage removal assembly being used to drive the multiple poking rods to perform unblocking operations on the nozzles.

[0009] Preferably, the rotary spray assembly includes a bidirectional motor, which is fixedly installed inside the groove shaft. A disc shaft is fixedly installed at the output end of the bidirectional motor. The bottom of the disc shaft is rotatably connected to the top of the groove shaft. A connecting plate is fixedly installed on the outer wall of the disc shaft. The outer wall of the connecting plate is fixedly connected to the inner wall of the storage box. The inner wall of the storage box is rotatably connected to the outer wall of the groove shaft.

[0010] Preferably, an annular plate is rotatably connected to the inner wall of the tower body. The annular plate is placed outside the storage box. A connecting rod is fixedly installed between the outer wall of the storage box and the inner wall of the annular plate. An airflow port is formed between the storage box and the annular plate. Multiple nozzles are also fixedly installed inside the annular plate. The spray ends of the multiple nozzles are flush with the outer wall of the annular plate. The multiple nozzles inside the annular plate and the multiple nozzles inside the storage box can correspond to each other and are at the same horizontal position.

[0011] Preferably, a liquid inlet is fixedly installed on the top of the tower body, and a high-pressure liquid pump is fixedly installed on the top of the storage box. The inlet end of the high-pressure liquid pump is rotatably connected to the inner wall of the liquid inlet. Multiple liquid pipes are fixedly installed on the outer wall of the high-pressure liquid pump. A liquid distribution pipe is fixedly installed at one end of each of the multiple liquid pipes. The liquid distribution pipe can be placed inside the connecting rod. Inlet pipes are fixedly installed on the outer walls of multiple nozzles. The top ends of the multiple inlet pipes are fixedly connected to the inner wall of the liquid distribution pipe.

[0012] Preferably, the inner walls of the multiple nozzles are provided with flow cavities, one end of the multiple liquid inlet pipes is fixedly connected to the inner walls of the multiple flow cavities, the inner walls of the multiple nozzles are fixedly installed with elastic arc-shaped nozzles, the inner walls of the multiple nozzles are symmetrically slidably connected with arc-shaped guide rods, one end of the multiple arc-shaped guide rods is fixedly connected to the outer walls of the multiple elastic arc-shaped nozzles, and pressure-bearing springs are symmetrically arranged between the outer walls of the multiple elastic arc-shaped nozzles and the inner walls of the multiple nozzles. The multiple pressure-bearing springs are respectively placed outside the multiple arc-shaped guide rods, and the outer walls of the multiple elastic arc-shaped nozzles can respectively fit against the inner walls of the multiple nozzles.

[0013] Preferably, the unblocking assembly further includes multiple shafts, multiple poking rods that are slidably connected to the inner walls of multiple flow cavities, one end of each of the multiple shafts that is fixedly connected to the outer walls of each of the multiple poking rods, the outer walls of each of the multiple shafts that can be slidably connected to the inner walls of multiple nozzles, and one end of each of the multiple poking rods that can be slidably connected to the inner walls of multiple elastic arc-shaped nozzles.

[0014] Preferably, a shaft block is fixedly installed at one end of each of the multiple shafts, a return spring is provided between one side of each of the multiple stud rods and the inner wall of each of the multiple nozzles, a ring shaft is fixedly installed on the outer wall of the tower body, the outer walls of the multiple shaft blocks can slide against the outer walls of the groove shaft and the ring shaft respectively, multiple telescopic rods are fixedly installed inside the groove shaft and on the outer wall of the ring shaft, a limit block is fixedly installed at the telescopic end of each of the multiple telescopic rods, the outer walls of the multiple limit blocks are slidably connected to the inner walls of the groove shaft and the ring shaft respectively, and the outer walls of the multiple shaft blocks can slide against the outer walls of the multiple limit blocks respectively.

[0015] Preferably, a sliding plate is fixedly installed between the outer wall of the groove shaft and the inner wall of the tower body. The outer wall of the storage box is slidably connected to the inner wall of the sliding plate. The inner wall of the sliding plate has a through-hole located directly below the storage box and the ring plate. Multiple scraping blocks are fixedly installed on the outer wall of the sliding plate. The outer walls of the multiple scraping blocks can fit against and scrape against the outer walls of the storage box and the multiple nozzles.

[0016] Preferably, a ventilation chamber is fixedly installed on the inner wall of the tower body, the top of the air inlet port is fixedly connected to the inner wall of the ventilation chamber, a storage rod is fixedly installed on the top of the ventilation chamber, the top of the storage rod is fixedly connected to the bottom of the groove shaft, multiple airflow holes are opened on the inner wall of the ventilation chamber, a slurry holding area is formed between the outer wall of the ventilation chamber and the inner wall of the tower body, and a slag removal port is fixedly installed on the outer wall of the tower body. The slag removal port is used to connect a slag removal device to extract the washing liquid containing contaminants in the slurry holding area.

[0017] Preferably, a rotating shaft is fixedly installed at the other output end of the bidirectional motor. The bottom end of the rotating shaft is placed inside the ventilation chamber box. The outer wall of the rotating shaft is rotatably connected to the groove shaft and the inner wall of the ventilation chamber box. An axial flow fan is fixedly installed at the bottom end of the rotating shaft and is positioned directly above the air inlet port.

[0018] The beneficial effects of this invention are as follows: 1. The present invention provides a harmless treatment device for waste gas from the processing of thermal insulation materials. When the nozzle becomes clogged, the unblocking component drives the puncturing rod to perform adaptive unblocking operations on the nozzle. The two work together to prevent the accumulation of adhering substances on the nozzle surface during the spraying and washing of waste gas generated from the processing of thermal insulation materials, thus preventing the formation of dirt and clogging of the nozzle. This makes the washing operation of waste gas from the processing of thermal insulation materials more convenient.

[0019] 2. The waste gas harmless treatment equipment for thermal insulation material processing described in this invention uses a bidirectional motor to drive multiple nozzles through a receiving box to rotate and spray inside the tower. When the waste gas enters the tower from the inlet port, the receiving box can generate a certain rotational suction force by rotating, thereby attracting the waste gas flowing out from the inlet port to flow between the nozzles and the tower, which can accelerate the flow of waste gas in the tower and make it more conducive to the upward floating operation of waste gas in the tower.

[0020] 3. The waste gas harmless treatment equipment for thermal insulation material processing described in this invention uses a push shaft to drive a piercing rod to slide within the flow cavity. When the piercing rod moves to the liquid inlet pipe, it blocks the space between the liquid inlet pipe and the nozzle, causing the elastic arc-shaped nozzle to lose the liquid pressure of the washing liquid. The pressure spring then pushes the elastic arc-shaped nozzle back to its original position. By pushing the piercing rod to continue moving, it adheres to and pierces the inner wall of the elastic arc-shaped nozzle, piercing out the adhering material inside the nozzle, thereby achieving anti-clogging cleaning of the flow cavity and the elastic arc-shaped nozzle.

[0021] 4. The waste gas harmless treatment equipment for thermal insulation material processing described in this invention uses two sets of nozzles arranged opposite each other, with multiple limiting blocks staggered on the groove shaft and ring shaft. When the receiving box and ring plate rotate, the multiple shaft blocks will push multiple piercing rods to stagger the flow cavities in the multiple nozzles. By setting it in this way, when cleaning one set of nozzles, it can be ensured that the other set of nozzles can continue to form a ring spray coverage surface for spraying the waste gas. It can ensure that the nozzles are automatically cleared without stopping the machine, which is more conducive to the spraying operation of waste gas.

[0022] 5. The waste gas harmless treatment equipment for thermal insulation material processing described in this invention, when the shaft block moves to the convex side of the limiting block, the piercing rod moves into the interior of the elastic arc-shaped nozzle and fits against it. The nozzle is rotated by the storage box and the ring plate, and the scraper on the slide plate scrapes the nozzle end of the nozzle through the rotation of the two, thereby scraping off the adhering material on the nozzle. This avoids the situation where the storage box and the ring plate cannot effectively shake off the pierced adhering material when rotating, and the adhering material still adheres to the nozzle, affecting the spraying effect of the washing liquid. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a perspective view of the present invention; Figure 2 This is the front view of the present invention; Figure 3 This is a schematic diagram of the structure at the connecting rod in this invention; Figure 4 This is a schematic diagram of the structure at the ring plate in this invention; Figure 5 This is a schematic diagram of the structure of the infusion tube in this invention; Figure 6 This is a schematic diagram of the scraper block structure in this invention; Figure 7 This is a schematic diagram of the structure at the limiting block in this invention; Figure 8 This is a schematic diagram of the structure at the shaft block in this invention; Figure 9 This is a schematic diagram of the structure of the rod in this invention.

[0025] In the diagram: 1. Tower body; 101. Air outlet port; 102. Air inlet port; 103. Slag removal port; 2. Liquid inlet pipe; 3. Ventilation chamber box; 301. Airflow hole; 302. Axial flow fan; 4. Rotating shaft; 5. Storage rod; 6. High-pressure infusion pump; 601. Infusion pipe; 602. Liquid inlet pipe; 603. Distributor pipe; 7. Storage box; 701. Ring plate; 702. Connecting rod; 8. Scraper; 801. Slide plate; 9. Nozzle; 901. Shaft block; 902. Stamping rod; 903. Return spring; 904. Shaft rod; 905. Flow chamber; 906. Elastic arc nozzle; 907. Pressure spring; 10. Bidirectional motor; 1001. Disc shaft; 1002. Connecting plate; 11. Groove shaft; 12. Ring shaft; 1201. Limiting block; 1202. Telescopic rod. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0027] like Figures 1 to 9 As shown in the embodiment of the present invention, a harmless treatment device for waste gas from the processing of thermal insulation materials includes a tower body 1. An outlet port 101 is fixedly installed at the top of the tower body 1 for discharging the washed waste gas from inside the tower body 1. An inlet port 102 is fixedly installed at the bottom of the tower body 1 for introducing the waste gas generated during the processing of thermal insulation materials into the tower body 1. A grooved shaft 11 is provided inside the tower body 1, and a storage box 7 is provided outside the grooved shaft 11. Multiple nozzles 9 are fixedly installed inside. The internal structure of the multiple nozzles 9 is the same. The spraying ends of the multiple nozzles 9 are flush with the outer wall of the storage box 7. The nozzles 9 are used to atomize and spray washing liquid. The inside of the groove shaft 11 is equipped with a rotating spray assembly, which is used to drive the multiple nozzles 9 to spray liquid to wash the exhaust gas generated during the processing of thermal insulation materials. The outside of the groove shaft 11 is equipped with a blockage removal assembly, which includes multiple poking rods 902. The blockage removal assembly is used to drive the multiple poking rods 902 to automatically unclog the nozzles 9. When the nozzle 9 in the scrubbing tower sprays and washes the exhaust gas generated from the processing of thermal insulation materials, the exhaust gas contains certain viscous substances. When the washing liquid comes into contact with these viscous substances, certain adhering substances will be formed. These adhering substances may adhere to the nozzle surface of the nozzle 9 and gradually accumulate, thus forming dirt, reducing the cross-sectional area of ​​the flow channel, and thus affecting the washing operation of the exhaust gas from the processing of thermal insulation materials. When it is necessary to harmlessly treat the exhaust gas generated during the processing of thermal insulation materials, the exhaust gas is introduced into the tower body 1 through the air inlet 102. When the gas enters the tower body 1, it floats vertically upward along the inner wall of the tower body 1. As the gas floats upward, it is driven by the rotary spray assembly in the drive shaft 11. The rotary spray assembly drives multiple nozzles 9 through the receiving box 7 to spray liquid wash onto the exhaust gas generated during the processing of thermal insulation materials. The exhaust gas comes into contact with the atomized washing liquid, which encapsulates the particles, agglomerates them into larger particles, and causes them to settle. This transfers the dust and harmful gases and other pollutants in the exhaust gas generated during the processing of thermal insulation materials to the liquid phase, thus performing preliminary purification of the exhaust gas generated during the processing of thermal insulation materials. When the nozzles 9 become blocked, the unblocking assembly drives the poking rod 902 to perform adaptive unblocking operation on the nozzles 9. The exhaust gas after washing continues to be washed. Moving upwards, the exhaust gas eventually flows out of the tower body 1 through the outlet port 101. The outflowing exhaust gas then flows to the next processing step, thereby achieving the washing operation of the exhaust gas generated during the processing of thermal insulation materials. Through the cooperation of the rotating spray component and the unblocking component, when spraying and washing the exhaust gas generated during the processing of thermal insulation materials, it can prevent the adhering substances from adhering to the nozzle surface of the spray head 9 during spraying and accumulating, thus forming dirt and clogging the nozzle of the spray head 9. This makes it more convenient for the washing operation of the exhaust gas from the processing of thermal insulation materials. It should be noted that the harmless treatment of the exhaust gas from the processing of thermal insulation materials in this device is a washing and purification step, which belongs to the initial purification stage of the harmless treatment of the exhaust gas from the processing of thermal insulation materials. Moreover, the spraying method adopted by this device is that the spray head 9 is placed on both sides of the exhaust gas channel to spray the exhaust gas flowing in the middle, which is a double-sided spraying structure.

[0028] like Figures 5 to 6 As shown, the rotary spray assembly includes a bidirectional motor 10, which is fixedly installed inside the groove shaft 11. A disc shaft 1001 is fixedly installed at the output end of the bidirectional motor 10. The bottom of the disc shaft 1001 is rotatably connected to the top of the groove shaft 11. A connecting plate 1002 is fixedly installed on the outer wall of the disc shaft 1001. The outer wall of the connecting plate 1002 is fixedly connected to the inner wall of the storage box 7. The inner wall of the storage box 7 is rotatably connected to the outer wall of the groove shaft 11. When it is necessary to wash the exhaust gas from the insulation material processing, the bidirectional motor 10 is driven to operate. The bidirectional motor 10 drives the disc shaft 1001 to rotate, and the disc shaft 1001 drives the storage box 7 to rotate outside the groove shaft 11 through the connecting plate 1002. The storage box 7 then drives the nozzles 9 inside it to rotate, so that multiple nozzles 9 rotate and spray inside the tower body 1, which plays the role of driving the nozzles 9 to rotate and spray. At the same time, the storage box 7 drives the nozzles 9 to rotate inside the tower body 1. When the exhaust gas enters the tower body 1 from the air inlet port 102, the storage box 7 can generate a certain rotational suction force through rotation, thereby attracting the exhaust gas flowing out from the air inlet port 102 to flow between the nozzles 9 and the tower body 1, which can accelerate the flow speed of the exhaust gas in the tower body 1 and make the exhaust gas flow operation in the tower body 1 more convenient.

[0029] like Figures 3 to 7 As shown, an annular plate 701 is rotatably connected to the inner wall of the tower body 1. The annular plate 701 is placed outside the storage box 7. A connecting rod 702 is fixedly installed between the outer wall of the storage box 7 and the inner wall of the annular plate 701. An airflow port is formed between the storage box 7 and the annular plate 701. Multiple nozzles 9 are also fixedly installed inside the annular plate 701. The spray ends of the multiple nozzles 9 are flush with the outer wall of the annular plate 701. The multiple nozzles 9 inside the annular plate 701 and the multiple nozzles 9 inside the storage box 7 can correspond to each other and are at the same horizontal position. Since the multiple nozzles 9 are staggered within the annular plate 701 and the storage box 7, they can be divided into two groups. When the bidirectional motor 10 drives the storage box 7 to rotate via the connecting plate 1002, the storage box 7 will drive the annular plate 701 to rotate together via the connecting rod 702. The storage box 7 and the annular plate 701 will then drive the two groups of nozzles 9 inside to rotate. One group of nozzles 9 sprays the exhaust gas inside the tower body 1. With this setup, when a blockage occurs in one group of nozzles 9, that group of nozzles 9 stops spraying, and the other group of nozzles 9 resumes spraying. During the spraying operation, the unblocking component will adaptively unblock one of the groups of nozzles 9, allowing the two groups to spray alternately. When the nozzles 9 rotate and spray inside the tower body 1, the two groups of nozzles 9 can adjust to each other, enabling continuous and uniform spraying of the upward-flowing exhaust gas. This is more conducive to the contact between the washing liquid and the exhaust gas, preventing the exhaust gas from flowing out of the tower body 1 without being washed when the unblocking component adaptively unblocks the nozzles 9. It should be noted that each group of staggered nozzles 9 sprays in a fan-shaped area, and multiple nozzles 9 can form a complete annular spray surface.

[0030] like Figures 2 to 6As shown, a liquid inlet 2 is fixedly installed on the top of the tower body 1, and a high-pressure liquid pump 6 is fixedly installed on the top of the storage box 7. The liquid inlet end of the high-pressure liquid pump 6 is rotatably connected to the inner wall of the liquid inlet 2. Multiple liquid delivery pipes 601 are fixedly installed on the outer wall of the high-pressure liquid pump 6. A liquid distribution pipe 603 is fixedly installed at one end of the multiple liquid delivery pipes 601. The liquid distribution pipe 603 can be placed inside the connecting rod 702. Liquid inlet pipes 602 are fixedly installed on the outer wall of multiple nozzles 9. The top ends of the multiple liquid inlet pipes 602 are fixedly connected to the inner wall of the liquid distribution pipe 603. When the nozzle 9 rotates and sprays the exhaust gas inside the tower body 1, the washing liquid is connected to the storage pipe for storing the washing liquid through the flange at the liquid inlet 2. The washing liquid then enters the high-pressure pump 6 through the liquid inlet 2. The high-pressure pump 6 then delivers the washing liquid into the distribution pipe 603 through the delivery pipe 601, and finally delivers the washing liquid into multiple nozzles 9 through the inlet pipe 602 for spraying. This serves to deliver the washing liquid into the nozzles 9. It should be noted that a sliding seal should be provided between the inlet end of the high-pressure pump 6 and the liquid inlet 2.

[0031] like Figures 8 to 9 As shown, each of the multiple nozzles 9 has a flow cavity 905 on its inner wall. One end of each of the multiple liquid inlet pipes 602 is fixedly connected to the inner wall of the multiple flow cavities 905. Each of the multiple nozzles 9 has an elastic arc-shaped nozzle 906 fixedly installed on its inner wall. Each of the multiple nozzles 9 has an arc-shaped guide rod symmetrically slidably connected to its inner wall. One end of each of the multiple arc-shaped guide rods is fixedly connected to the outer wall of each of the multiple elastic arc-shaped nozzles 906. Each of the multiple elastic arc-shaped nozzles 906 has a pressure spring 907 symmetrically arranged between its outer wall and its inner wall. Each of the multiple pressure springs 907 is placed outside the multiple arc-shaped guide rods. The outer walls of each of the multiple elastic arc-shaped nozzles 906 can fit against the inner walls of each of the multiple nozzles 9. When the high-pressure infusion pump 6 delivers the washing liquid into the nozzle 9 through the inlet pipe 602, the washing liquid is propelled by the high pressure of the high-pressure infusion pump 6 into the flow cavity 905 within the nozzle 9, causing it to flow. The washing liquid is then ejected from the elastic arc-shaped nozzle 906. As the washing liquid is ejected from the elastic arc-shaped nozzle 906, the pressure causes the nozzle to elastically deform. This deformation causes the elastic arc-shaped nozzle 906 to drive the arc-shaped guide rod at the end of the nozzle 9, compressing the pressure spring 907. As the flow continues, the elastic arc-shaped nozzle 906 changes from annular to flattened oval, and the washing liquid is sprayed out through the flattened oval nozzle 906. This allows the washing liquid sprayed from the elastic arc-shaped nozzle 906 to spread in a fan shape, covering the airflow port between the storage box 7 and the ring plate 701, facilitating the coverage and spraying of exhaust gas, and achieving the effect of spraying the washing liquid in a fan shape. It should be noted that the lateral deformation dimension of the pressure spring 907 needs to be determined according to the actual spraying range.

[0032] like Figures 8 to 9 As shown, the unblocking assembly also includes multiple shafts 904, multiple poking rods 902 that are slidably connected to the inner walls of multiple flow cavities 905, one end of each of the multiple shafts 904 that is fixedly connected to the outer walls of each of the multiple poking rods 902, the outer walls of each of the multiple shafts 904 that can be slidably connected to the inner walls of each of the multiple nozzles 9, and one end of each of the multiple poking rods 902 that can be slidably connected to the inner walls of each of the multiple elastic arc-shaped nozzles 906; When anti-clogging operation is required for nozzle 9, the shaft 904 is moved, causing the abutment rod 902 to slide within the flow cavity 905. The abutment rod 902 then moves towards the elastic arc nozzle 906. When the abutment rod 902 reaches the inlet pipe 602, it blocks the connection between the inlet pipe 602 and nozzle 9. At this point, the washing liquid in the inlet pipe 602 cannot flow into the flow cavity 905, and the elastic arc nozzle 906 loses its washing function. The liquid pressure causes the pressure spring 907 to elastically push the elastic arc nozzle 906 to reset. By continuously pushing the puncture rod 902 to move, the puncture rod 902 will adhere to and puncture the inner wall of the elastic arc nozzle 906, puncturing out the adhering material inside the elastic arc nozzle 906. This achieves the anti-clogging cleaning operation in the convection cavity 905 and the elastic arc nozzle 906, and plays the role of adhering to and puncturing the inner wall of the elastic arc nozzle 906.

[0033] like Figures 7 to 9 As shown, a shaft block 901 is fixedly installed at one end of each of the multiple shafts 904. A return spring 903 is provided between one side of each of the multiple piercing rods 902 and the inner wall of each of the multiple nozzles 9. A ring shaft 12 is fixedly installed on the outer wall of the tower body 1. The outer walls of the multiple shaft blocks 901 can slide against the outer walls of the groove shaft 11 and the ring shaft 12 respectively. Multiple telescopic rods 1202 are fixedly installed inside the groove shaft 11 and on the outer wall of the ring shaft 12. Limiting blocks 1201 are fixedly installed at the telescopic ends of the multiple telescopic rods. The outer walls of the multiple limiting blocks 1201 are slidably connected to the inner walls of the groove shaft 11 and the ring shaft 12 respectively. The multiple limiting blocks 1201 are all trapezoidal in shape. The multiple limiting blocks 1201 on the groove shaft 11 and the ring shaft 12 are arranged in annular staggered arrangement. The outer walls of the multiple shaft blocks 901 can slide against the outer walls of the multiple limiting blocks 1201 respectively. When the bidirectional motor 10 drives the storage box 7 and the ring plate 701 to rotate via the connecting plate 1002 and the connecting rod 702, the storage box 7 and the ring plate 701 will drive the multiple nozzles 9 inside to rotate. The multiple nozzles 9 will then drive the multiple shaft blocks 901 to rotate and slide on the groove shaft 11 and the ring shaft 12 respectively via multiple shafts 904. When the inside of the nozzle 9 is blocked, the limit block 1201 will slide out from the inner wall of the groove shaft 11 and the ring shaft 12 via the drive telescopic rod 1202. The shaft block 901 will then rotate and slide out. The shaft block 901 slides on the steering limit block 1201. When the shaft block 901 rotates and contacts the limit block 1201, the shaft block 901 will slide along the inclined sliding surface of the limit block 1201. The shaft block 901 will be pressed and push the sting rod 902 through the shaft rod 904, which will pull the return spring 903 to move within the flow cavity 905. This will push the sting rod 902 to push into the elastic arc nozzle 906. When the shaft block 901 slides out from the most convex end of the limit block 1201, the return spring 903 will drive the sting rod 902 through elastic force. 02. As the shaft block 901 moves, one end of it slides against the outer wall of the limiting block 1201. Through the opposing arrangement of multiple nozzles 9, and the staggered arrangement of multiple limiting blocks 1201 on the groove shaft 11 and ring shaft 12, when the receiving box 7 and the ring plate 701 rotate, the multiple shaft blocks 901 push multiple abutment rods 902 to stagger the flow cavities 905 inside the multiple nozzles 9, thereby achieving adaptive cleaning of the nozzles 9. By setting it in this way, when cleaning one group of nozzles 9... During cleaning, it can ensure that another set of nozzles 9 can continue to form a ring spray coverage surface to spray the exhaust gas. It can ensure that the nozzles 9 are unblocked without stopping the machine, which is more conducive to the spraying of exhaust gas. It should be noted that the distance between multiple nozzles 9 needs to be set according to the actual spray range and angle. The convex width of the limit block 1201 is greater than the side width of the poking rod 902. A flow sensor should be installed inside the nozzle 9 to determine the blockage situation inside the nozzle 9.

[0034] like Figures 5 to 6 As shown, a sliding plate 801 is fixedly installed between the outer wall of the groove shaft 11 and the inner wall of the tower body 1. The outer wall of the storage box 7 is slidably connected to the inner wall of the sliding plate 801. The inner wall of the sliding plate 801 has a through opening located directly below the storage box 7 and the ring plate 701. Multiple scraper blocks 8 are fixedly installed on the outer wall of the sliding plate 801. The outer walls of the multiple scraper blocks 8 can all be scraped against the outer walls of the storage box 7 and the multiple nozzles 9. When the shaft block 901 moves to the convex side of the limiting block 1201, the poking rod 902 moves into the interior of the elastic arc nozzle 906 and fits against it. The poking rod 902 will push the adhering material in the elastic arc nozzle 906 to be discharged. The nozzle 9 will rotate through the storage box 7 and the ring plate 701. The shaft block 901 will move from one side of the limiting block 1201 to the other side of the limiting block 1201. The scraper 8 on the slide plate 801 will scrape the nozzle end of the nozzle 9 through the rotation of the two, thereby scraping off the adhering material adhering to the nozzle of the nozzle 9. This avoids the storage box 7 and the ring plate 701 not being able to shake off the poked adhering material well when rotating, so that the adhering material will still adhere to the nozzle of the nozzle 9 and affect the spraying effect of the washing liquid. It plays the role of scraping off the adhering material. It should be noted that the convex width of the limiting block 1201 is greater than the side width of the poking rod 902.

[0035] like Figures 1 to 2 As shown, a ventilation chamber box 3 is fixedly installed on the inner wall of the tower body 1. The top end of the air inlet port 102 is fixedly connected to the inner wall of the ventilation chamber box 3. A placement rod 5 is fixedly installed on the top of the ventilation chamber box 3. The top end of the placement rod 5 is fixedly connected to the bottom of the groove shaft 11. Multiple airflow holes 301 are opened on the inner wall of the ventilation chamber box 3. A slurry holding area is formed between the outer wall of the ventilation chamber box 3 and the inner wall of the tower body 1. A slag extraction port 103 is fixedly installed on the outer wall of the tower body 1. The slag extraction port 103 is used to connect a suction device to extract the washing liquid containing pollutants in the slurry holding area. Before the exhaust gas scrubbing operation, an external slag suction device is connected to the slag suction port 103 via a flange. During the exhaust gas scrubbing operation, exhaust gas is introduced through the air inlet port 102 and enters the ventilation chamber box 3. Finally, the exhaust gas drifts into the tower body 1 through the airflow holes 301 on the ventilation chamber box 3. Then, the bidirectional motor 10 drives the nozzle 9 to rotate and spray on the groove shaft 11 at the top of the placement rod 5. The impurities in the sprayed exhaust gas will fall downwards by gravity into the slurry area formed between the bottom of the tower body 1 and the ventilation chamber box 3. Finally, the slag suction device pulls the slag out of the tower body 1 through the slag suction port 103, thus removing the slurry from the tower body 1. It should be noted that the slag suction device includes a suction pump and pipelines, which are mainly used to extract the slurry from the tower body 1. This is existing technology, so it is only described in this solution and the specific structure is not shown.

[0036] like Figures 1 to 2As shown, a rotating shaft 4 is fixedly installed at the other output end of the bidirectional motor 10. The bottom end of the rotating shaft 4 is placed inside the ventilation chamber box 3. The outer wall of the rotating shaft 4 is rotatably connected to the groove shaft 11 and the inner wall of the ventilation chamber box 3. An axial flow fan 302 is fixedly installed at the bottom end of the rotating shaft 4. The axial flow fan 302 is placed directly above the air inlet port 102. The axial flow fan 302 is used to push the exhaust gas introduced into the air inlet port 102 to flow faster from the air flow hole 301 into the tower body 1. When the bidirectional motor 10 drives the storage box 7 and the ring plate 701 to rotate, the bidirectional motor 10 will also drive the rotating shaft 4 to rotate. The rotating shaft 4 will drive the axial flow fan 302 to rotate in the ventilation chamber box 3. The axial flow fan 302 will generate blowing force by rotating, thereby blowing the exhaust gas introduced from the air inlet port 102 into the air flow hole 301, accelerating the speed at which the exhaust gas flows from the air flow hole 301 into the tower body 1, and playing the role of accelerating the introduction of exhaust gas into the tower body 1.

[0037] Working Principle: When it is necessary to harmlessly treat the waste gas generated during the processing of thermal insulation materials, the waste gas is introduced into the tower body 1 through the air inlet 102. When the gas enters the tower body 1, it floats vertically upward along the inner wall of the tower body 1. As the gas floats upward, it is driven by the rotary spray assembly in the drive shaft 11. The rotary spray assembly drives multiple nozzles 9 through the receiving box 7 to spray liquid wash onto the waste gas generated during the processing of thermal insulation materials. The waste gas comes into contact with the atomized washing liquid, which encapsulates the particles, agglomerates them into larger particles, and causes them to settle. This transfers the dust and harmful gases and other pollutants in the waste gas generated during the processing of thermal insulation materials into the liquid phase, thus treating the waste gas generated during the processing of thermal insulation materials. The gas undergoes initial purification. When nozzle 9 becomes clogged, the unblocking component drives the puncturing rod 902 to perform adaptive unblocking of nozzle 9. The waste gas after washing continues to move upward and eventually flows out of tower 1 through outlet port 101. The outflowing waste gas then flows to the next processing step, thereby achieving the washing operation of waste gas generated during insulation material processing. Through the cooperation of the rotating spray component and the unblocking component, when spraying and washing the waste gas generated during insulation material processing, it can prevent the adhering substances from adhering to and accumulating on the nozzle surface of nozzle 9 during spraying, thus forming dirt and causing clogging of nozzle 9. This makes it more convenient to wash the waste gas from insulation material processing. When it is necessary to wash the exhaust gas from the insulation material processing, the bidirectional motor 10 is driven to operate. The bidirectional motor 10 drives the disc shaft 1001 to rotate, and the disc shaft 1001 drives the storage box 7 to rotate outside the groove shaft 11 through the connecting plate 1002. The storage box 7 drives the nozzles 9 inside to rotate through its own rotation, so that multiple nozzles 9 rotate and spray inside the tower body 1, which plays the role of driving the nozzles 9 to rotate and spray. At the same time, the storage box 7 drives the nozzles 9 to rotate inside the tower body 1. When the exhaust gas enters the tower body 1 from the air inlet port 102, the storage box 7 can generate a certain rotational suction force through rotation, thereby attracting the exhaust gas flowing out from the air inlet port 102 to flow between the nozzles 9 and the tower body 1, which can accelerate the flow of exhaust gas in the tower body 1 and make the exhaust gas flow operation in the tower body 1 more convenient. Since the multiple nozzles 9 are staggered within the annular plate 701 and the receiving box 7, they can be divided into two groups. When the bidirectional motor 10 drives the receiving box 7 to rotate via the connecting plate 1002, the receiving box 7 will drive the annular plate 701 to rotate together via the connecting rod 702. The receiving box 7 and the annular plate 701 will then drive the two groups of nozzles 9 inside to rotate. One group of nozzles 9 sprays the exhaust gas inside the tower body 1. With this setup, if a blockage occurs in one group of nozzles 9... When one set of nozzles 9 stops spraying and the other set of nozzles 9 starts spraying, the unblocking component will adaptively unblock the nozzles 9 in one set, allowing the two sets to spray alternately. When the nozzles 9 rotate and spray inside the tower body 1, the two sets of nozzles 9 can adjust to each other, which can continuously and evenly spray the upward-flowing exhaust gas, making it more conducive to the contact between the washing liquid and the exhaust gas. This prevents the exhaust gas from flowing out of the tower body 1 without being washed when the unblocking component adaptively unblocks the nozzles 9. When the nozzle 9 rotates and sprays the exhaust gas inside the tower body 1, the washing liquid is connected to the storage pipe for storing the washing liquid through the flange at the liquid inlet 2. The washing liquid will then enter the high-pressure pump 6 through the liquid inlet 2. The high-pressure pump 6 will then transport the washing liquid into the distribution pipe 603 through the liquid inlet pipe 601. Finally, the washing liquid will be transported into multiple nozzles 9 through the liquid inlet pipe 602 for spraying, thus serving the purpose of transporting the washing liquid into the nozzles 9. When the high-pressure pump 6 delivers the washing liquid into the nozzle 9 through the inlet pipe 602, the washing liquid is pushed by the high pressure of the pump 6 into the flow cavity 905 inside the nozzle 9 to flow. The washing liquid is then sprayed out from the elastic arc nozzle 906. When the washing liquid is sprayed out from the elastic arc nozzle 906, the pressure pushes the elastic arc nozzle 906 to elastically deform. The elastic arc nozzle 906 then drives the arc guide rod at the end of the nozzle 9 to squeeze the pressure spring 907 and move. The elastic arc nozzle 906 changes from annular to flat oval. The washing liquid is then sprayed out through the flat oval nozzle of the elastic arc nozzle 906, so that the washing liquid sprayed out by the elastic arc nozzle 906 can spread in a fan shape, covering the airflow port between the storage box 7 and the ring plate 701, which facilitates the coverage and spraying of exhaust gas, and achieves the effect of making the washing liquid spray in a fan shape. When anti-clogging operation is required for the nozzle 9, the push shaft 904 is moved, causing the push rod 902 to slide within the flow cavity 905. The push rod 902 then moves towards the elastic arc nozzle 906. When the push rod 902 reaches the inlet pipe 602, it blocks the connection between the inlet pipe 602 and the nozzle 9. At this point, the washing liquid in the inlet pipe 602 cannot flow into the flow cavity 905, and the elastic arc nozzle 906 loses its washing function. The liquid pressure causes the pressure spring 907 to push the elastic arc nozzle 906 back to its original position. By continuously pushing the puncture rod 902, the puncture rod 902 will move and puncture the inner wall of the elastic arc nozzle 906, puncturing out the adhering material inside the elastic arc nozzle 906. This achieves the anti-clogging cleaning operation in the convection cavity 905 and the elastic arc nozzle 906, and plays the role of puncturing the inner wall of the elastic arc nozzle 906. When the bidirectional motor 10 drives the storage box 7 and the ring plate 701 to rotate via the connecting plate 1002 and the connecting rod 702, the storage box 7 and the ring plate 701 will drive the multiple nozzles 9 inside to rotate. The multiple nozzles 9 will then drive the multiple shaft blocks 901 to rotate and slide on the groove shaft 11 and the ring shaft 12 respectively via multiple shafts 904. When the inside of the nozzle 9 is blocked, the limit block 1201 will be driven out of the groove by the drive telescopic rod 1202. As the inner walls of shaft 11 and ring shaft 12 slide out, shaft block 901 will slide towards limit block 1201 through rotation. When shaft block 901 rotates and contacts limit block 1201, shaft block 901 will slide along the inclined sliding surface of limit block 1201. Shaft block 901 will then be pressed, pushing the stamping rod 902 through shaft rod 904, pulling the return spring 903 to move within flow cavity 905, thereby pushing stamping rod 902 against elastic arc nozzle 906. When the shaft block 901 slides out from the most convex end of the limit block 1201, the return spring 903 will drive the poking rod 902 to move through the elastic force. One end of the shaft block 901 will continue to slide against the outer wall of the limit block 1201. Through the opposing arrangement of multiple nozzles 9, and the staggered arrangement of multiple limit blocks 1201 on the groove shaft 11 and the ring shaft 12, when the storage box 7 and the ring plate 701 rotate, multiple shaft blocks 901 will push multiple poking rods 902 to stagger the flow cavity 905 in multiple nozzles 9, thereby realizing the self-adaptive cleaning of nozzles 9. By setting it in this way, when cleaning one group of nozzles 9, it can be ensured that another group of nozzles 9 can continue to form a ring spray coverage surface to spray the exhaust gas. It can ensure that the nozzles 9 are unblocked without stopping the machine, which is more conducive to the spraying of exhaust gas. When the shaft block 901 moves to the convex side of the limiting block 1201, the poking rod 902 moves into the interior of the elastic arc nozzle 906 and fits against it. The poking rod 902 will push the adhering material in the elastic arc nozzle 906 to be discharged. The nozzle 9 will be rotated by the storage box 7 and the ring plate 701. The shaft block 901 will move from one side of the limiting block 1201 to the other side of the limiting block 1201. The scraper 8 on the slide plate 801 will scrape the nozzle end of the nozzle 9 through the rotation of the two, thereby scraping off the adhering material adhering to the nozzle of the nozzle 9. This avoids the storage box 7 and the ring plate 701 not being able to shake off the poked adhering material well when rotating, so that the adhering material will still adhere to the nozzle of the nozzle 9 and affect the spraying effect of the washing liquid. This has the function of scraping off the adhering material. Before the exhaust gas washing operation, a slag suction device is connected externally to the slag suction port 103 via a flange. When the exhaust gas is washed, the exhaust gas is introduced through the air inlet port 102 and enters the ventilation chamber box 3. Finally, the exhaust gas drifts into the tower body 1 through the air flow holes 301 on the ventilation chamber box 3. Then, the bidirectional motor 10 drives the nozzle 9 to rotate and spray on the groove shaft 11 at the top of the placement rod 5. The impurities in the sprayed exhaust gas will fall downwards by gravity into the slurry area formed between the bottom of the tower body 1 and the ventilation chamber box 3. Finally, the slag suction device pulls the slag out of the tower body 1 through the slag suction port 103, thus removing the slurry from the tower body 1. When the bidirectional motor 10 drives the storage box 7 and the ring plate 701 to rotate, the bidirectional motor 10 will also drive the rotating shaft 4 to rotate. The rotating shaft 4 will drive the axial flow fan 302 to rotate in the ventilation chamber box 3. The axial flow fan 302 will generate blowing force by rotating, thereby blowing the exhaust gas introduced from the air inlet port 102 into the air flow hole 301, accelerating the speed at which the exhaust gas flows from the air flow hole 301 into the tower body 1, and playing the role of accelerating the introduction of exhaust gas into the tower body 1.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for harmlessly treating waste gas from the processing of thermal insulation materials, characterized in that: The system includes a tower body, with an air outlet fixedly installed at the top and an air inlet fixedly installed at the bottom. An internal groove shaft is provided within the tower body, and a storage box is located outside the groove shaft. Multiple nozzles are fixedly installed inside the storage box, all with identical internal structures. The spray tips of the nozzles are flush with the outer wall of the storage box. A rotating spray assembly is located inside the groove shaft, used to drive the multiple nozzles to spray liquid to wash the exhaust gas generated during the processing of the insulation material. A blockage-clearing assembly is located outside the groove shaft, including multiple squeegees, used to drive the squeegees to clear blockages in the nozzles.

2. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 1, characterized in that: The rotary spray assembly includes a bidirectional motor, which is fixedly installed inside the groove shaft. A disc shaft is fixedly installed at the output end of the bidirectional motor. The bottom of the disc shaft is rotatably connected to the top of the groove shaft. A connecting plate is fixedly installed on the outer wall of the disc shaft. The outer wall of the connecting plate is fixedly connected to the inner wall of the storage box. The inner wall of the storage box is rotatably connected to the outer wall of the groove shaft.

3. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 1, characterized in that: The inner wall of the tower is rotatably connected to a ring plate, which is placed outside the storage box. A connecting rod is fixedly installed between the outer wall of the storage box and the inner wall of the ring plate. An airflow port is formed between the storage box and the ring plate. Multiple nozzles are also fixedly installed inside the ring plate. The spray ends of the multiple nozzles are flush with the outer wall of the ring plate. The multiple nozzles inside the ring plate and the multiple nozzles inside the storage box can correspond to each other and are at the same horizontal position.

4. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 2, characterized in that: A liquid inlet is fixedly installed on the top of the tower body, and a high-pressure liquid pump is fixedly installed on the top of the storage box. The inlet end of the high-pressure liquid pump is rotatably connected to the inner wall of the liquid inlet. Multiple liquid pipes are fixedly installed on the outer wall of the high-pressure liquid pump. A liquid distribution pipe is fixedly installed at one end of each liquid pipe. The liquid distribution pipe can be placed inside the connecting rod. Inlet pipes are fixedly installed on the outer walls of multiple nozzles. The top ends of multiple inlet pipes are fixedly connected to the inner wall of the liquid distribution pipe.

5. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 1, characterized in that: Multiple nozzles have flow cavities on their inner walls. One end of multiple liquid inlet pipes is fixedly connected to the inner wall of each flow cavity. Elastic arc-shaped nozzles are fixedly installed on the inner walls of multiple nozzles. Arc-shaped guide rods are symmetrically slidably connected to the inner walls of multiple nozzles. One end of each arc-shaped guide rod is fixedly connected to the outer wall of each elastic arc-shaped nozzle. Pressure springs are symmetrically arranged between the outer wall of each elastic arc-shaped nozzle and the inner wall of each nozzle. Each pressure spring is placed outside the arc-shaped guide rod. The outer wall of each elastic arc-shaped nozzle can fit against the inner wall of each nozzle.

6. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 5, characterized in that: The unblocking assembly also includes multiple shafts, multiple poking rods that are slidably connected to the inner walls of multiple flow cavities, one end of each shaft that is fixedly connected to the outer walls of each poking rod, the outer walls of each shaft that can be slidably connected to the inner walls of multiple nozzles, and one end of each poking rod that can be slidably connected to the inner walls of multiple elastic arc-shaped nozzles.

7. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 6, characterized in that: Multiple shafts are fixedly mounted with shaft blocks at one end. Multiple stud rods are provided with return springs between one side of each rod and the inner wall of each nozzle. A ring shaft is fixedly mounted on the outer wall of the tower body. The outer walls of multiple shaft blocks can slide against the outer walls of the groove shaft and the ring shaft, respectively. Multiple telescopic rods are fixedly mounted inside the groove shaft and on the outer wall of the ring shaft. Limit blocks are fixedly mounted at the telescopic ends of multiple telescopic rods. The outer walls of multiple limit blocks are slidably connected to the inner walls of the groove shaft and the ring shaft, respectively. The outer walls of multiple shaft blocks can slide against the outer walls of multiple limit blocks, respectively.

8. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 1, characterized in that: A sliding plate is fixedly installed between the outer wall of the groove shaft and the inner wall of the tower body. The outer wall of the storage box is slidably connected to the inner wall of the sliding plate. The inner wall of the sliding plate has a through-hole located directly below the storage box and the ring plate. Multiple scraping blocks are fixedly installed on the outer wall of the sliding plate. The outer walls of the multiple scraping blocks can fit against the outer walls of the storage box and the multiple nozzles and scrape.

9. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 1, characterized in that: A ventilation chamber is fixedly installed on the inner wall of the tower body. The top of the air inlet port is fixedly connected to the inner wall of the ventilation chamber. A storage rod is fixedly installed on the top of the ventilation chamber. The top of the storage rod is fixedly connected to the bottom of the groove shaft. Multiple airflow holes are opened on the inner wall of the ventilation chamber. A slurry holding area is formed between the outer wall of the ventilation chamber and the inner wall of the tower body. A slag removal port is fixedly installed on the outer wall of the tower body. The slag removal port is used to connect to a slag removal device to extract the washing liquid containing contaminants in the slurry holding area.

10. The waste gas harmless treatment equipment for thermal insulation material processing according to claim 2, characterized in that: The other output end of the bidirectional motor is fixedly mounted with a rotating shaft. The bottom end of the rotating shaft is placed inside the ventilation chamber. The outer wall of the rotating shaft is rotatably connected to the groove shaft and the inner wall of the ventilation chamber. An axial flow fan is fixedly mounted at the bottom end of the rotating shaft and is positioned directly above the air inlet port.

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