A leather processing waste gas adsorption and purification device

Abstract

This invention discloses a leather processing waste gas adsorption and purification device, belonging to the field of industrial waste gas treatment technology. The device includes a purification chamber, an exhaust fan, an inlet pipe, an outlet pipe, a clamping assembly, an activated carbon group, a receiving cavity, an outlet branch pipe, an inlet branch pipe, and an exhaust branch pipe. Because the diameter of the outlet pipe is smaller than that of the inlet pipe, the waste gas entering through the inlet pipe cannot be completely discharged through the outlet pipe. As a result, the air enters the interior of the outlet branch pipe through the receiving cavity, then enters the interior of the inlet branch pipe and contacts the activated carbon group again for purification and adsorption. Subsequently, it enters the interior of the outlet pipe through the exhaust branch pipe and is discharged outward. The waste gas discharged directly through the outlet pipe can undergo two adsorptions and purifications by the activated carbon groups on both sides, thereby increasing the residence time of the waste gas. Furthermore, waste gases from different paths can undergo two adsorptions and purifications by the activated carbon groups, resulting in better adsorption and purification effects.

Description

Technical Field

[0001] This invention belongs to the field of industrial waste gas treatment technology, specifically, it relates to an adsorption and purification treatment device for leather processing waste gas. Background Technology

[0002] Leather production waste gas is a complex gaseous pollutant generated throughout the entire leather processing process. Its composition and concentration are closely related to the production process. It is characterized by complex composition, strong odor, and high toxicity of some components. Therefore, the waste gas generated during leather production needs to be purified before being discharged.

[0003] Chinese invention patent CN118253161A discloses a device for absorbing and purifying exhaust gas from workpiece painting, comprising an absorption module and a purification module. The absorption module includes an absorption pipe and an absorption fan. The absorption pipe is connected to the paint booth, and the absorption fan provides power to cause the exhaust gas generated in the paint booth to flow along the absorption pipe into the purification module for purification. The purification module includes an exhaust gas adsorption purifier, which includes a purification chamber. The purification chamber has a purification cavity inside, and the internal area of ​​the purification chamber is divided into two sections on both sides of the purification cavity. The system has an air inlet chamber and an air outlet chamber. The absorption pipe is connected to the air inlet chamber, and the air outlet chamber is connected to the outside through the exhaust pipe. Purification boxes are evenly arranged vertically inside the purification chamber, and the purification boxes are filled with activated carbon. Purification holes are evenly arranged on the upper and lower surfaces of the purification boxes, and the purification holes are connected to the inside of the purification boxes. An air outlet is provided on the side of the purification box near the air outlet chamber, and a filter screen is provided inside the air outlet. An air outlet groove is provided on the side wall of the air outlet chamber opposite the air outlet. Air inlet holes are evenly arranged on the side wall of the air inlet chamber opposite the gap between the purification boxes.

[0004] Although the device can ensure that the exhaust gas comes into full contact with the activated carbon, the process of activated carbon adsorbing harmful gases is not instantaneous. Gas molecules need to slowly penetrate to the adsorption points on the micropores of the activated carbon in order to complete the adsorption. However, most existing activated carbon adsorption methods involve air entering from one side and contacting the activated carbon before being discharged from the other side. This results in some harmful gases being discharged before they are adsorbed by the activated carbon, thus reducing the adsorption effect on harmful gases. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] To address the issue raised in the background art that activated carbon does not adsorb harmful gases instantaneously, but rather that gas molecules need to slowly penetrate to the adsorption points on the microporous inner wall of the activated carbon in order to complete adsorption, and that existing activated carbon adsorption methods mostly involve gas entering from one side and contacting the activated carbon before being discharged from the other side, which results in some harmful gases being discharged before being adsorbed by the activated carbon, thus reducing the adsorption effect of harmful gases, the present invention adopts the following technical solution.

[0007] The purpose of this invention is to provide a leather processing waste gas adsorption and purification device, which reduces the exhaust gas outlet so that the waste gas cannot be completely discharged, thereby allowing the excess waste gas to re-contact activated carbon through other paths, increasing the residence time of the waste gas, and thus solving the above-mentioned problems.

[0008] To achieve the above objectives, one objective of this invention is to provide a leather processing waste gas adsorption and purification device, comprising a purification chamber, an exhaust fan detachably connected to one side of the purification chamber, an air inlet pipe detachably connected to the exhaust fan, an air outlet pipe detachably connected to the other side of the purification chamber, the diameter of the air outlet pipe being smaller than that of the air inlet pipe, a clamping assembly disposed inside the purification chamber, an activated carbon group clamped in the middle of the clamping assembly, a receiving cavity disposed at the center of the activated carbon group, an air outlet branch pipe detachably connected to the upper end of the clamping assembly and communicating with the receiving cavity, a plurality of air inlet branch pipes detachably connected to the outer wall of the air outlet branch pipe and detachably connected to the upper part of the clamping assembly, and an exhaust branch pipe detachably connected to the bottom of the clamping assembly, the exhaust branch pipe communicating with the interior of the air outlet pipe.

[0009] In the above technical solution, since the diameter of the exhaust pipe is smaller than that of the inlet pipe, the exhaust gas entering the inlet pipe cannot be completely discharged through the exhaust pipe. As a result, the air enters the interior of the exhaust branch pipe through the cavity, then enters the interior of the inlet branch pipe and comes into contact with the activated carbon group again for purification and adsorption. After that, it enters the interior of the exhaust pipe through the exhaust branch pipe and is discharged outward. This increases the residence time of the exhaust gas and increases the number of purification and adsorption cycles.

[0010] Based on this, the activated carbon assembly consists of multiple arc-shaped plates. A fixed inner ring is set inside the cavity. Multiple partition plates are fixedly connected to the outer wall of the fixed inner ring. Multiple activated carbon assemblies are placed between each pair of partition plates. Sealing semi-arc plates are rotatably connected to the upper and lower sides of the fixed inner ring. A plug-in rod is fixedly connected to the upper end of the sealing semi-arc plates. The sealing semi-arc plates are plugged into the inner top of the clamping assembly. Notches are set on both sides of the sealing semi-arc plates, and the notches on both sides are opposite to the air inlet pipe and the air outlet pipe, respectively.

[0011] The outer wall of the activated carbon assembly has a conical protrusion.

[0012] This design increases the contact area between the exhaust gas and the activated carbon group, improving the purification and adsorption effect, and also prevents vertically downward exhaust gas from coming into contact with horizontally moving exhaust gas, thus avoiding turbulence.

[0013] The clamping assembly includes a bottom support plate and a top pressure plate. The bottom support plate is provided with multiple air outlets and a limiting protrusion is fixedly connected to the upper end. Multiple air inlet branch pipes pass through the top pressure plate. A limiting boss is provided at the upper end of the bottom support plate. The bottoms of multiple activated carbon groups are clamped inside the limiting protrusion and outside the limiting boss.

[0014] The bottom of the base plate is rotatably connected to an air collection hood. The bottom of the air collection hood is detachably connected to multiple support legs. The support legs are detachably connected to the bottom inner side of the purification chamber. The bottom of the air collection hood is equipped with a connecting bracket. The top of the connecting bracket is detachably connected to a servo motor. The rotating end of the servo motor is detachably connected to the bottom of the base plate. The sealing semi-circular plate is inserted into the top inner side of the top pressure plate.

[0015] This design allows the different outer walls of the activated carbon group to face the air inlet pipe during the purification and adsorption of waste gas. When air is introduced, the dust and impurities on the outer walls of the activated carbon group facing the air outlet pipe are blown outward, preventing dust from clogging the outer walls of the activated carbon group and causing a decrease in adsorption and purification effect.

[0016] The bottom inner side of the air collecting hood has a through hole, and the air outlet branch pipe is connected to the air outlet pipe.

[0017] The bottom support plate is rotatably connected to the sliding ring. A rotating outer chuck is provided at the bottom of the top pressure plate near the outer edge. The upper end of the rotating outer chuck is fixedly connected to the sliding ring. A rotating inner chuck is provided at the bottom of the top pressure plate near the center. The upper end of the rotating inner chuck is also fixedly connected to the sliding ring. The bottom of the top pressure plate is provided with a large and a small connecting ring groove. The large connecting ring groove is rotatably connected to the sliding ring on the rotating outer chuck, and the small connecting ring groove is rotatably connected to the sliding ring on the rotating inner chuck. The rotating inner chuck is inserted into the top of the inner cavity. The rotating outer chuck is fitted around the outside of the activated carbon group near the upper end. The outer fixed chuck is attached to the outer wall of the activated carbon group near the bottom.

[0018] The clamping assembly is equipped with an outer casing. An outer fixing chuck is fixedly connected to the inner wall of the outer casing. Multiple connecting bosses are fixedly connected to the upper end of the top pressure plate. Fastening bolts pass through each connecting boss and are threaded to the upper end of the outer casing. Connecting holes are provided on both sides of the outer casing. The connecting holes on both sides are respectively opposite to the air inlet pipe and the air outlet pipe. A lifting handle is fixedly connected to the upper end of the air outlet branch pipe. A top cover plate is detachably connected to the upper end of the purification box.

[0019] This design allows the activated carbon group to be completely covered except for the activated carbon groups at the air inlet and outlet pipes, preventing the exhaust gas from spreading outward and affecting the adsorption effect.

[0020] In another technical solution, the inlet pipe and outlet pipe are detachably connected to a storage ring at one end near the activated carbon group. Sliding ring grooves are provided on the opposite surfaces of the two storage rings. Contact rings are slidably connected inside the sliding ring grooves on both sides. A limiting flange is fixedly connected to the contact ring near the outer wall of the storage ring. A return spring is provided between the limiting flange and the inside of the sliding ring groove.

[0021] The shape of the contact ring port is adapted to the conical protrusion, and both the inner and outer walls of the contact ring opening are provided with inclined surfaces.

[0022] In this design, the spring force of the return spring allows the contact ring to fit against the outside of the activated carbon assembly, thus providing auxiliary limiting for the activated carbon assembly and making it more stable during rotation.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Because the diameter of the exhaust duct is smaller than that of the inlet duct, not all the exhaust gas entering through the inlet duct can be discharged through the exhaust duct. Instead, the air flows upwards through the cavity into the interior of the exhaust branch duct, then downwards into the interior of the inlet branch duct to again contact the activated carbon group for purification and adsorption. Finally, it flows out through the exhaust branch duct into the exhaust duct and is discharged outwards. The exhaust gas discharged directly through the exhaust duct undergoes two rounds of adsorption and purification by the activated carbon groups on both sides, resulting in a longer residence time and better adsorption and purification effects as exhaust gases from different paths undergo adsorption and purification twice. The conical protrusion design allows for a larger contact area with the activated carbon group upon entry, thus increasing the utilization rate of the activated carbon group. 2. The activated carbon group can be limited by the setting of the limiting protrusion and the limiting protrusion. The servo motor drives the base plate and multiple activated carbon groups to rotate, so that the different outer walls of the activated carbon group can face the air inlet pipe. When the air is inlet, the dust and impurities on the outer wall of the activated carbon group facing the air outlet pipe can be blown outward. In this way, the different outer walls of the activated carbon group can be fully utilized to contact the exhaust gas first, and the dust on the outer wall of the activated carbon group can also be cleaned by the rotation of the activated carbon group. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a leather processing waste gas adsorption and purification device according to the present invention; Figure 2 This is a front view schematic diagram of the purification treatment device in this invention; Figure 3This is a top view of the purification device in this invention. Figure 4 This is a cross-sectional view of the purification device in this invention; Figure 5 This is a schematic diagram of the activated carbon assembly structure in this invention; Figure 6 This is a schematic diagram of the clamping component structure in this invention; Figure 7 This is a schematic diagram of the outer casing structure in this invention; Figure 8 This is a schematic diagram of the contact ring structure in this invention; Figure 9 This is a schematic diagram of the rotating component structure in this invention; Figure 10 This is a schematic diagram of the waste gas flow path in this invention.

[0025] The correspondence between the labels and component names in the attached figures is as follows: 100. Cleanroom enclosure; 101. Air inlet duct; 102. Air outlet duct; 103. Top cover; 104. Exhaust fan; 200. Activated carbon assembly; 201. Conical protrusion; 202. Receiving cavity; 203. Air outlet branch pipe; 204. Air inlet branch pipe; 205. Lifting handle; 206. Divider plate; 207. Fixing inner ring; 208. Sealing semi-circular plate; 209. Notch groove; 210. Connecting rod; 300. Clamping assembly; 301. Base plate; 302. Limiting protrusion; 303. Air outlet; 304. Sliding ring; 305. Rotating inner chuck; 306. Top pressure plate; 307. Connecting ring groove; 308. Connecting boss; 309. Fastening bolt; 310. Outer casing; 311. Connecting hole; 312. Limiting boss; 313. Rotating outer chuck; 314. External fixed chuck; 400. Storage ring; 401. Sliding ring groove; 402. Return spring; 403. Limiting flange; 404. Contact ring body; 405. Inclined surface; 500, air collector hood; 501, support leg; 502, through hole; 503, connecting bracket; 504, servo motor; 505, exhaust branch pipe. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments.

[0029] like Figure 1-3 As shown, this is a schematic diagram of a preferred embodiment of the present invention for a leather processing waste gas adsorption and purification device. The leather processing waste gas adsorption and purification device of this embodiment includes a purification box 100. A blower 104 is detachably connected to one side of the purification box 100, and an air inlet pipe 101 is detachably connected to the blower 104. An air outlet pipe 102 is detachably connected to the other side of the purification box 100 and connects to the outside. The air inlet pipe 101 extends to the production position in the workshop. In this embodiment, the waste gas generated during leather production and processing is drawn in through the air inlet pipe 101, purified inside the purification box 100, and then discharged to the outside through the air outlet pipe 102, thus completing the adsorption and purification process of the waste gas.

[0030] like Figure 4 as well as Figure 10As shown, this is a cross-sectional view of the purification device in this embodiment. The diameter of the outlet pipe 102 is smaller than that of the inlet pipe 101. A clamping assembly 300 is provided inside the purification box 100. An activated carbon group 200 is clamped in the middle of the clamping assembly 300. A receiving cavity 202 is provided in the center of the activated carbon group 200. An outlet branch pipe 203 communicating with the receiving cavity 202 is detachably connected to the upper end of the clamping assembly 300. Multiple inlet branch pipes 204 detachably connected to the upper part of the outlet branch pipe 203 are detachably connected to the outer wall of the outlet branch pipe 203. An outlet branch pipe 505 is detachably connected to the bottom of the clamping assembly 300. The outlet branch pipe 505 communicates with the interior of the outlet pipe 102. In this embodiment, the exhaust gas drawn in by the exhaust fan 104 enters the receiving cavity 202 after contacting the activated carbon group 200. The air inside the cavity 202 is discharged outward through the air outlet 102. Since the diameter of the air outlet 102 is smaller than that of the air inlet 101, the exhaust gas entering through the air inlet 101 cannot be completely discharged outward through the air outlet 102. As a result, the air enters the interior of the air outlet branch pipe 203 through the cavity 202, and then enters the interior of the air inlet branch pipe 204 and comes down again to contact the activated carbon group 200 for purification and adsorption. Then, it enters the interior of the air outlet 102 through the air outlet branch pipe 505 and is discharged outward. The exhaust gas discharged directly through the air outlet 102 can be adsorbed and purified twice by the activated carbon groups 200 on both sides, which can make the residence time of the exhaust gas longer. Moreover, the exhaust gas from different paths can be adsorbed and purified twice by the activated carbon groups 200, resulting in better adsorption and purification effect.

[0031] To maximize the contact area between the exhaust gas and the activated carbon assembly 200, the specific structure can be as follows: Figure 4 In the embodiment shown, the outer wall of the activated carbon group 200 is provided with a conical protrusion 201. In this embodiment, the conical protrusion 201 allows the unit area of ​​the exhaust gas to contact the activated carbon group 200 when it enters to be larger, thereby increasing the utilization rate of the activated carbon group 200.

[0032] like Figure 5As shown, this is a schematic diagram of the activated carbon assembly structure in this embodiment. The activated carbon assembly 200 is composed of multiple arc-shaped pieces. A fixed inner ring 207 is provided inside the cavity 202. Multiple partition plates 206 are fixedly connected to the outer wall of the fixed inner ring 207. Multiple activated carbon assemblies 200 are placed between every two partition plates 206. The outermost activated carbon assembly 200 has a conical protrusion 201 on its outer wall. Sealing semi-arc plates 208 are rotatably connected to the upper and lower sides of the fixed inner ring 207. A plug-in rod 210 is fixedly connected to the upper end of the plate 208. The sealing semi-arc plate 208 is plugged into the inner top of the clamping assembly 300. The sealing semi-arc plate 208 has notch grooves 209 on both sides. The notch grooves 209 on both sides are opposite to the air inlet pipe 101 and the air outlet pipe 102, respectively. In this embodiment, the design of the multi-layer activated carbon group 200 enables the exhaust gas to be filtered multiple times. The setting of the sealing semi-arc plate 208 can prevent the vertically downward exhaust gas from contacting the horizontally moving exhaust gas and forming turbulence.

[0033] like Figure 6 as well as Figure 9 As shown, this is a schematic diagram of the clamping component structure in this embodiment. The clamping component 300 includes a bottom support plate 301 and a top pressure plate 306. The bottom support plate 301 is provided with multiple air outlets 303 and a limiting protrusion ring 302 is fixedly connected to its upper end. Multiple air inlet branch pipes 204 pass through the top pressure plate 306. A limiting boss 312 is provided at the upper end of the bottom support plate 301. The bottoms of multiple activated carbon groups 200 are locked inside the limiting protrusion ring 302 and outside the limiting boss 312. An air collecting hood 500 is rotatably connected to the bottom of the bottom support plate 301. Multiple support legs 501 are detachably connected to the bottom of the air collecting hood 500. The support legs 501 are detachably connected to the inner bottom of the purification box 100. A connecting bracket 503 is provided at the bottom of the air collecting hood 500. A servo motor is detachably connected to the upper part of the connecting bracket 503. The rotating end of the servo motor 504 is detachably connected to the bottom of the base plate 301. The sealing semi-arc plate 208 is inserted into the inner top of the top pressure plate 306. In this embodiment, the activated carbon group 200 can be limited by the setting of the limiting protrusion ring 302 and the limiting protrusion 312. The rotation of the servo motor 504 drives the base plate 301 and multiple activated carbon groups 200 to rotate, so that the different outer walls of the activated carbon group 200 can face the air inlet pipe 101. Thus, when the air is inlet, the dust and impurities on the outer wall of the activated carbon group 200 facing the air outlet pipe 102 can be blown outward. In this way, while making full use of the different outer walls of the activated carbon group 200 to contact the exhaust gas first, the dust on the outer wall of the activated carbon group 200 can also be cleaned by the rotation of the activated carbon group 200.

[0034] When the activated carbon assembly 200 rotates, the top pressure plate 306 and the fixed inner ring 207 rotate with the activated carbon assembly 200. The sealing semi-arc plate 208 will not rotate through the plug rod 210, thus ensuring that the notch 209 is always opposite to the air inlet pipe 101 and the air outlet pipe 102.

[0035] In order to ensure that the gas ejected from the air outlet 303 is discharged uniformly, the specific structure can be as follows: Figure 9 In the embodiment shown, a through hole 502 is provided on the bottom inner side of the air collecting hood 500, and the air outlet branch pipe 505 is connected to the air outlet pipe 102. In this embodiment, the exhaust gas ejected from multiple air outlet holes 303 can be collected by the air collecting hood 500 and discharged uniformly from the air outlet branch pipe 505 into the interior of the air outlet pipe 102. In addition, the exhaust gas can also carry away the heat generated by the servo motor 504 when it is working.

[0036] To prevent external air leakage from multiple activated carbon groups 200, which could prevent waste gas from being properly purified and adsorbed by the activated carbon groups 200, the specific structure can be as follows: Figure 4 , Figure 6 as well as Figure 7 In the embodiment shown, an outer fixed chuck 314 is provided on the outer wall near the bottom of the purification chamber 100. A bottom support plate 301 is rotatably connected to a sliding ring 304. A rotating outer chuck 313 is provided on the bottom of the top pressure plate 306 near its outer edge. A sliding ring 304 is fixedly connected to the upper end of the rotating outer chuck 313. A rotating inner chuck 305 is provided near the center of the bottom of the top pressure plate 306. A sliding ring 304 is also fixedly connected to the upper end of the rotating inner chuck 305. A large and a small connecting ring groove 307 are provided on the bottom of the top pressure plate 306. The larger connecting ring groove 307 connects to the sliding ring 304 on the rotating outer chuck 313. 04 Rotary connection: The small connecting ring groove 307 is rotatably connected to the sliding ring 304 on the rotating inner chuck 305. The rotating inner chuck 305 is inserted into the inner top of the receiving cavity 202. The rotating outer chuck 313 is sleeved on the outside of the activated carbon group 200 near the upper end. The outer fixed chuck 314 fits against the outer wall of the activated carbon group 200 near the bottom. In this embodiment, through the cooperation of the rotating inner chuck 305, the rotating outer chuck 313 and the outer fixed chuck 314, the activated carbon group 200 except for the positions of the air inlet pipe 101 and the air outlet pipe 102 can be completely wrapped and covered to prevent the exhaust gas from spreading outward and affecting the adsorption effect.

[0037] To facilitate easier replacement and installation of the activated carbon assembly 200, the specific structure can be as follows: Figure 6 as well as Figure 7In the embodiment shown, the clamping assembly 300 is externally provided with an outer cover housing 310. An external fixing chuck 314 is fixedly connected to the inner wall of the outer cover housing 310. Multiple connecting bosses 308 are fixedly connected to the upper end of the top pressure plate 306. Each connecting boss 308 has a fastening bolt 309 passing through it, and the fastening bolt 309 is threadedly connected to the upper end of the outer cover housing 310. The outer cover housing 310 has connecting holes 311 on both sides, which are respectively opposite to the air inlet pipe 101 and the air outlet pipe 102. The air outlet branch pipe 203... A lifting handle 205 is fixedly connected to the upper end, and a top cover plate 103 is detachably connected to the upper end of the purification box 100. In this embodiment, the outer cover box 310 can further prevent the exhaust gas from spreading outward. When installing or replacing the activated carbon group 200, first remove the top cover plate 103, then remove each fastening bolt 309, and hold the lifting handle 205 to pull out the top pressure plate 306, the rotating inner chuck 305 and the rotating outer chuck 313 upward. Then, pull out the activated carbon group 200 in sequence to complete the disassembly. The installation is the same.

[0038] To prevent exhaust gases from diffusing laterally upon entry, the specific structure can be as follows: Figure 8 In the embodiment shown, a storage ring 400 is detachably connected to one end of the air inlet pipe 101 and the air outlet pipe 102 near the activated carbon group 200. Sliding ring grooves 401 are provided on the opposite surfaces of the two storage rings 400. Contact rings 404 are slidably connected inside the sliding ring grooves 401. A limiting flange 403 is fixedly connected to the contact ring 404 near the outer wall of the storage ring 400. A return spring 402 is provided between the limiting flange 403 and the interior of the sliding ring groove 401. The port of the contact ring 404 is adapted to the shape of the conical protrusion 201, and the contact ring... Both the inner and outer walls of the opening 404 are provided with inclined surfaces 405. In this embodiment, the elastic force of the return spring 402 can make the contact ring 404 fit against the outside of the activated carbon group 200, which can assist in limiting the activated carbon group 200, making the activated carbon group 200 more stable when rotating. When the outermost activated carbon group 200 is removed, the contact ring 404 will automatically retract when the conical protrusion 201 moves upward. When the outermost activated carbon group 200 is installed, the contact ring 404 will also retract when the conical protrusion 201 contacts the inclined surface 405.

[0039] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A leather processing waste gas adsorption and purification device, comprising a purification chamber (100), an exhaust fan (104) detachably connected to one side of the purification chamber (100), an air inlet pipe (101) detachably connected to the exhaust fan (104), and an air outlet pipe (102) detachably connected to the other side of the purification chamber (100), characterized in that, The diameter of the air outlet pipe (102) is smaller than that of the air inlet pipe (101). The purification box (100) is equipped with a clamping assembly (300). The clamping assembly (300) clamps the activated carbon group (200) in the middle. The activated carbon group (200) is equipped with a receiving cavity (202) in the center. The upper end of the clamping assembly (300) is detachably connected to an air outlet branch pipe (203) that communicates with the receiving cavity (202). The outer wall of the air outlet branch pipe (203) is detachably connected to multiple air inlet branch pipes (204) that are detachably connected to the upper part of the clamping assembly (300). The bottom of the clamping assembly (300) is detachably connected to an air outlet branch pipe (505). The air outlet branch pipe (505) communicates with the interior of the air outlet pipe (102).

2. The leather processing waste gas adsorption and purification device according to claim 1, characterized in that, The activated carbon assembly (200) is composed of multiple arc-shaped pieces. A fixed inner ring (207) is provided inside the cavity (202). Multiple partition plates (206) are fixedly connected to the outer wall of the fixed inner ring (207). Multiple activated carbon assemblies (200) are placed between each two partition plates (206). Sealing semi-arc plates (208) are rotatably connected to the upper and lower sides of the fixed inner ring (207). A plug-in rod (210) is fixedly connected to the upper end of the sealing semi-arc plate (208). The sealing semi-arc plate (208) is plugged into the inner top of the clamping assembly (300). Notch grooves (209) are provided on both sides of the sealing semi-arc plate (208). The notch grooves (209) on both sides are opposite to the air inlet pipe (101) and the air outlet pipe (102), respectively.

3. The leather processing waste gas adsorption and purification device according to claim 1, characterized in that, The outer wall of the activated carbon assembly (200) is provided with a conical protrusion (201).

4. The leather processing waste gas adsorption and purification treatment device according to claim 2, characterized in that, The clamping assembly (300) includes a bottom plate (301) and a top plate (306). The bottom plate (301) is provided with multiple air outlets (303) and a limiting ring (302) is fixedly connected to the upper end. Multiple air inlet branches (204) pass through the top plate (306). The upper end of the bottom plate (301) is provided with a limiting boss (312). The bottom of multiple activated carbon groups (200) is stuck inside the limiting ring (302) and outside the limiting boss (312).

5. The leather processing waste gas adsorption and purification treatment device according to claim 4, characterized in that, The bottom of the base plate (301) is rotatably connected to the air collecting hood (500), and the bottom of the air collecting hood (500) is detachably connected to multiple support legs (501). The support legs (501) are detachably connected to the bottom of the inner side of the purification box (100). The bottom of the air collecting hood (500) is provided with a connecting bracket (503), and the top of the connecting bracket (503) is detachably connected to a servo motor (504). The rotating end of the servo motor (504) is detachably connected to the bottom of the base plate (301), and the sealing semi-arc plate (208) is inserted into the top of the inner side of the top pressure plate (306).

6. The leather processing waste gas adsorption and purification treatment device according to claim 5, characterized in that, The bottom inner side of the air collecting hood (500) is provided with a through hole (502), and the air outlet branch pipe (505) is connected to the air outlet pipe (102).

7. The leather processing waste gas adsorption and purification treatment device according to claim 6, characterized in that, The bottom support plate (301) is rotatably connected to the sliding ring (304). A rotating outer chuck (313) is provided at the bottom of the top pressure plate (306) near its outer edge. The upper end of the rotating outer chuck (313) is fixedly connected to the sliding ring (304). A rotating inner chuck (305) is provided at the bottom of the top pressure plate (306) near its center. The upper end of the rotating inner chuck (305) is also fixedly connected to the sliding ring (304). The bottom of the top pressure plate (306) is provided with a large and a small connecting ring groove (3...). 07), the large connecting ring groove (307) is rotatably connected to the sliding ring (304) on the rotating outer chuck (313), the small connecting ring groove (307) is rotatably connected to the sliding ring (304) on the rotating inner chuck (305), the rotating inner chuck (305) is inserted into the inner top of the receiving cavity (202), the rotating outer chuck (313) is fitted on the outside of the activated carbon group (200) near the upper end, and the outer fixing chuck (314) fits against the outer wall of the activated carbon group (200) near the bottom.

8. The leather processing waste gas adsorption and purification treatment device according to claim 7, characterized in that, The clamping assembly (300) is provided with an outer cover box (310) on the outside. An outer fixed chuck (314) is fixedly connected to the inner wall of the outer cover box (310). Multiple connecting bosses (308) are fixedly connected to the upper end of the top pressure plate (306). Fastening bolts (309) pass through each connecting boss (308). The fastening bolts (309) are threaded to the upper end of the outer cover box (310). Connecting holes (311) are provided on both sides of the outer cover box (310). The connecting holes (311) on both sides are opposite to the air inlet pipe (101) and the air outlet pipe (102) respectively. A lifting handle (205) is fixedly connected to the upper end of the air outlet branch pipe (203). A top cover plate (103) is detachably connected to the upper end of the purification box (100).

9. The leather processing waste gas adsorption and purification device according to claim 1, characterized in that, The air inlet pipe (101) and the air outlet pipe (102) are detachably connected to a storage ring (400) at one end near the activated carbon group (200). The opposite surfaces of the two storage rings (400) are provided with sliding ring grooves (401). The inside of the two sliding ring grooves (401) is slidably connected with a contact ring body (404). The contact ring body (404) is fixedly connected to the outer wall of the storage ring (400) near the storage ring (400). A return spring (402) is provided between the limit flange (403) and the inside of the sliding ring groove (401).

10. The leather processing waste gas adsorption and purification device according to claim 9, characterized in that, The shape of the port of the contact ring (404) is adapted to the conical protrusion (201), and the inner and outer walls of the opening of the contact ring (404) are provided with inclined surfaces (405).

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