Fermentation tank tail gas purification device convenient to clean

Abstract

The invention relates to the technical field of purification devices, in particular to a fermentation tank tail gas purification device convenient to clean, which comprises a shell, a pretreatment unit and a deodorization unit, a cleaning agent capable of dissolving organic matters is received at the bottom of the shell, the pretreatment unit comprises a filter belt which is rotationally arranged in the shell and is used for filtering impurities in waste gas, a water absorption material is arranged on the outer surface of the filter belt, the filter belt is of an annular structure, and the lower part of the filter belt is immersed below the liquid level of the cleaning agent; the deodorizing unit is arranged on one side of an inner ring of the filter belt, a cleaning unit for cleaning the outer surface of the filter belt is arranged below the filter belt, tail gas flows from the upper part of the shell to the inner ring side from the outer ring side of the filter belt along the vertical direction, and waste gas entering the inner ring side of the filter belt is discharged into the deodorizing unit. According to the invention, the workload during manual cleaning is reduced, the pretreatment structure does not need to be dismantled, and it is ensured that the purification device can continuously carry out purification treatment on tail gas in the fermentation tank.

Description

Technical Field

[0001] The invention relates to the technical field of purification devices, and in particular to a fermentation tank tail gas purification device which is easy to clean. Background Art

[0002] Currently, the existing chemical fermentation tank odor gas purification device is generally provided with a pretreatment structure inside to filter impurities. However, when installing the pretreatment structure of the existing fermentation tank odor gas purification device, the purification device needs to be disassembled and the pretreatment structure is placed in a fixed position inside the purification device to prevent the odor from not being delivered to the pretreatment structure. The installation is very troublesome, and when cleaning and replacing the pretreatment structure in the future, it is necessary to install and disassemble according to the above steps. Moreover, after the existing fermentation tank odor gas purification device is connected to the fermentation tank, if the fermentation tank odor gas purification device is buried, it may affect the purification effect.

[0003] Chinese Patent Publication No. CN222131406U discloses a fermentation tank odor gas purification device, comprising: a shell, wherein a gas storage bin, a placement bin and a purification bin are arranged in the shell, the gas storage bin is arranged corresponding to the air inlet arranged above the shell, the placement bin is arranged at one side of the gas storage bin for placing a pretreatment mechanism, the purification bin is arranged below the gas storage bin and the placement bin, and the purification bin is communicated with the placement bin; an exhaust pipe and a partition, the exhaust pipe is arranged at one side of the shell, and one end of the exhaust pipe is arranged corresponding to the purification bin, the partition is arranged between the placement bin and the purification bin, a slide groove is provided on the upper surface of the partition, a docking assembly is arranged below the pretreatment mechanism, and the docking assembly is clamped with the slide groove; an installation component, the installation component is composed of two groups of telescopic arms, the two groups of telescopic arms are movably installed on both sides of the shell respectively, and one end of the two groups of telescopic arms can be clamped.

[0004] The above scheme facilitates the disassembly of the pretreatment mechanism, but the pretreatment mechanism still needs to be cleaned manually, and the cleaning workload is large. At the same time, the purification device also needs to be cleaned after a long period of use. The above purification device does not have a self-cleaning function, and a pretreatment mechanism and a partition are arranged in the purification device. If the purification device needs to be fully cleaned, the pretreatment mechanism and the partitions in the purification device need to be completely removed. After the cleaning is completed, the pretreatment mechanism and all the partitions need to be installed back into the purification device, which is labor-intensive and inefficient. Summary of the invention

[0005] In view of the above problems, a fermentation tank tail gas purification device which is easy to clean is provided. A rotating filter belt is arranged in the shell, and a water-absorbing material capable of absorbing a cleaning agent is arranged on the periphery of the filter belt. When the tail gas passes through the filter belt, organic matter and materials in the tail gas can be intercepted by the filter belt, and the water-absorbing material adsorbed with the cleaning agent can initially dissolve the organic matter when in contact with the organic matter, thereby reducing the adhesion of the organic matter on the filter belt and improving the cleaning effect of the cleaning unit on the filter belt when the subsequent filter belt passes through the cleaning unit. At the same time, the rotating filter belt rotates into the cleaning agent at the bottom of the shell after passing through the air inlet. The detergent soaks and dissolves the organic matter remaining on the filter belt, further improving the cleaning effect of the cleaning unit when cleaning the filter belt. At the same time, the filter mesh directly immersed in the detergent can make the water-absorbing material arranged on the outer periphery of the filter mesh fully absorb the detergent, so that when the filter belt rotates to the bottom of the air inlet for the second time, the water-absorbing material contains sufficient detergent, reducing the possibility of organic matter sticking to the filter belt, thereby completing the self-cleaning function of the pretreatment unit, reducing the workload during manual cleaning, and there is no need to dismantle the pretreatment structure, ensuring that the purification device can continue to purify the exhaust gas in the fermentation tank.

[0006] In order to solve the problems of the prior art, the present invention provides a fermentation tank exhaust gas purification device that is easy to clean, including an outer shell, a pretreatment unit and a deodorization unit; the bottom of the outer shell receives a detergent that can dissolve organic matter, the pretreatment unit includes a filter belt that is rotatably arranged in the outer shell and filters impurities in the exhaust gas, the outer surface of the filter belt is provided with a water-absorbing material, the filter belt is an annular structure, the lower part of the filter belt is immersed below the liquid surface of the detergent, the deodorization unit is arranged on one side of the inner ring of the filter belt, and a cleaning unit for cleaning the outer surface of the filter belt is arranged below the filter belt, the exhaust gas flows from the outer ring side to the inner ring side of the filter belt along the vertical direction from the upper part of the outer shell, and the exhaust gas entering the inner ring side of the filter belt is discharged into the deodorization unit.

[0007] Preferably, a receiving shell for receiving the detergent dripping from the filter belt is provided on one side of the inner ring of the filter belt, the receiving shell is located above the deodorization unit, and a ventilation groove interconnected with the deodorization unit is provided on the side wall of the receiving shell.

[0008] Preferably, the deodorization unit includes a deodorization box connected to the ventilation groove, an opening is provided on the side wall of the deodorization box, a fan for discharging exhaust gas from the opening is provided on the side wall of the shell on the horizontal side of the opening, and the opening is located in the inner ring of the filter belt.

[0009] Preferably, a guide pipe is provided on one side of the receiving shell to guide the cleaning agent to the bottom of the outer shell, and a sewage bin is provided on one side of the deodorizing box. The guide pipe extends into the sewage bin, and a sewage outlet is provided at the lower part of the sewage bin, which extends below the liquid level of the cleaning agent.

[0010] Preferably, the bottom of the sewage discharge bin is tilted downward toward the sewage discharge port, and a nozzle for discharging the cleaning agent is provided at one end of the bottom of the sewage discharge bin which is at a higher position.

[0011] Preferably, a spiral blade is horizontally rotatably arranged at the bottom of the receiving shell, and the connection between the guide tube and the receiving shell is located at the end of the spiral blade.

[0012] Preferably, a reflux unit for supplying detergent to the nozzle is provided below the nozzle, the reflux unit draws detergent from the detergent stored at the bottom of the shell, a filter is provided at the front end of the input end of the reflux unit, and the detergent first passes through the filter and then enters the reflux unit.

[0013] Preferably, the cleaning unit comprises a cleaning roller rotatably arranged below the filter belt, and the rotation direction of the cleaning roller is opposite to the rotation direction of the filter belt.

[0014] Preferably, a driving wheel that cooperates with the inner ring of the filter belt is rotatably provided on one side of the inner ring of the filter belt, a first gear is fixedly provided at the end of the driving wheel, a second gear is fixedly provided at the end of the cleaning roller, and the first gear and the second gear are meshed with each other.

[0015] Preferably, an air pump is arranged at the upper part of the shell, a first switch valve is arranged at the bottom of the shell, and a second switch valve is arranged at the air outlet end of the fan.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges a rotating filter belt in the housing, and arranges a water-absorbing material capable of absorbing a cleaning agent on the periphery of the filter belt. When the exhaust gas passes through the filter belt, organic matter and materials in the exhaust gas can be intercepted by the filter belt, and the water-absorbing material adsorbed with the cleaning agent can preliminarily dissolve the organic matter when in contact with the organic matter, thereby reducing the adhesion of the organic matter on the filter belt and improving the cleaning effect of the cleaning unit on the filter belt when the subsequent filter belt passes through the cleaning unit. At the same time, the rotating filter belt rotates into the cleaning agent at the bottom of the housing after passing through the air inlet, and the cleaning agent removes the residual organic matter on the filter belt. The organic matter is soaked and dissolved, which further improves the cleaning effect of the cleaning unit when cleaning the filter belt. At the same time, the filter screen directly immersed in the detergent can make the water-absorbing material arranged on the outer periphery of the filter screen fully absorb the detergent, so that when the filter belt rotates to the bottom of the air inlet for the second time, the water-absorbing material contains sufficient detergent, which reduces the possibility of organic matter sticking to the filter belt, thereby completing the self-cleaning function of the pretreatment unit, reducing the workload during manual cleaning, and there is no need to dismantle the pretreatment structure, ensuring that the purification device can continue to purify the exhaust gas in the fermentation tank.

[0017] 2. By setting the spiral blades and the guide pipe, the organic matter remaining in the receiving shell can be discharged smoothly through the guide pipe. The guide pipe discharges the organic matter into the sewage bin and is discharged from the sewage outlet under the action of the water flow sprayed from the nozzle, thereby avoiding some undissolved organic matter from remaining at the bottom of the receiving shell. In addition, due to the limited power of the fan, the detergent will not flow back through the guide pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a fermentation tank tail gas purification device that is easy to clean according to the present invention; Figure 2 It is a side view of a fermentation tank tail gas purification device that is easy to clean according to the present invention; Figure 3 The invention is a fermentation tank tail gas purification device that is easy to clean Figure 2 Schematic cross-sectional view at AA in the middle; Figure 4 This is a cutaway perspective view of a fermentation tank tail gas purification device that is easy to clean. Figure 1 ; Figure 5 This is a three-dimensional schematic diagram of a fermentation tank tail gas purification device that is easy to clean according to the present invention, with part of the outer shell removed. Figure 1 ; Figure 6 This is a three-dimensional schematic diagram of a fermentation tank tail gas purification device that is easy to clean according to the present invention, with part of the outer shell removed. Figure 2 ; Figure 7 This is a three-dimensional schematic diagram of a fermentation tank tail gas purification device that is easy to clean according to the present invention, with part of the outer shell removed. Figure 3 ; Figure 8 The invention is a fermentation tank tail gas purification device which is easy to clean Figure 7 A partial enlarged schematic diagram of point B in the middle; Fig. 9 This is a cutaway stereoscopic diagram of a fermentation tank tail gas purification device that is easy to clean according to the present invention, with part of the outer shell removed. Figure 1 ; Fig.10 The invention is a fermentation tank tail gas purification device which is easy to clean Fig. 9 A partial enlarged schematic diagram of point C in the middle; Fig.11 This is a cutaway perspective view of a fermentation tank tail gas purification device that is easy to clean. Figure 2 ; Fig.12 This is a cutaway stereoscopic diagram of a fermentation tank tail gas purification device that is easy to clean according to the present invention, with part of the outer shell removed. Figure 2 .

[0019] The numbers in the figure are: 1. Shell; 11. Air inlet; 2. Pretreatment unit; 21. Filter belt; 211. Driving wheel; 212. Rotary driver; 22. Cleaning unit; 221. Cleaning roller; 222. First gear; 223. Second gear; 23. Receiver shell; 231. Ventilation groove; 232. Sewage discharge bin; 2321. Sewage discharge port; 233. Guide pipe; 234. Sprinkler; 235. Spiral blade; 2351. First synchronous wheel; 2352, first synchronous belt; 2353, first bevel gear; 2354, second bevel gear; 2355, second synchronous wheel; 2356, second synchronous belt; 236, reflux unit; 2361, reflux pipe; 2362, water pump; 237, filter; 24, air pump; 25, first switch valve; 26, second switch valve; 3, deodorization unit; 31, deodorization box; 32, opening; 33, fan; 34, activated carbon plate. DETAILED DESCRIPTION

[0020] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Reference Figure 1-Figure 4 : A fermentation tank exhaust purification device that is easy to clean, includes a shell 1, a pretreatment unit 2 and a deodorization unit 3; the bottom of the shell 1 receives a detergent that can dissolve organic matter, the pretreatment unit 2 includes a filter belt 21 that is rotatably arranged in the shell 1 and filters impurities in the exhaust gas, the outer surface of the filter belt 21 is provided with a water-absorbing material, the filter belt 21 is an annular structure, the lower part of the filter belt 21 is immersed below the liquid surface of the detergent, the deodorization unit 3 is arranged on the inner ring side of the filter belt 21, and a cleaning unit 22 for cleaning the outer surface of the filter belt 21 is arranged below the filter belt 21, the exhaust gas flows from the outer ring side to the inner ring side of the filter belt 21 along the vertical direction from the upper part of the shell 1, and the exhaust gas entering the inner ring side of the filter belt 21 is discharged into the deodorization unit 3.

[0022] The impurities included in the tail gas generated by the existing fermentation tank during fermentation are mainly composed of dust and organic matter. According to different fermentation tank usage scenarios, some fermentation tanks have less dust content, but more organic matter mixed in the gas, most of which have a certain viscosity. The traditional deodorization unit 3 mostly uses activated carbon for deodorization. When treating the tail gas of the fermentation tank, it mainly includes two processing steps, one is the pretreatment process, in which the dust and organic matter in the tail gas are pre-filtered, and the other is the deodorization process, which is set in the deodorization unit 3 to adsorb the odor in the exhaust gas. Since the deodorization unit 3 is mostly composed of activated carbon, if the pretreatment unit 2 is not set before the deodorization unit 3, the sticky organic matter will adhere to the activated carbon of the deodorization unit 3. After a period of use, the activated carbon will be wrapped with organic matter, resulting in the inability of the activated carbon to contact the tail gas. Not only does it reduce the circulation speed of the exhaust gas when passing through the deodorization unit 3, but it also increases the frequency of replacing the activated carbon, resulting in a significant drop in the exhaust gas treatment capacity of the deodorization unit 3 with use, and the use cost of the activated carbon is high. After the pretreatment unit 2 is set up, although the existing pretreatment unit 2 can intercept organic matter, it cannot achieve self-cleaning. After using it for a period of time, the pretreatment unit 2 still needs to be disassembled for manual cleaning. In addition, it is very difficult to clean the organic matter accumulated in the pretreatment unit 2 for a long time, and the cleaning workload is large. During cleaning, the fermentation tank exhaust gas purification device needs to stop purification.

[0023] In order to avoid the above situation, the existing pretreatment unit 2 is improved so that the pretreatment unit 2 can continuously clean itself, so that the processing capacity will not decay over time, and there is no need for regular disassembly, which reduces the workload and ensures that the purification device can continuously purify the fermentation tank tail gas. The specific structure and working process of the pretreatment unit 2 are as follows: A plurality of driving wheels 211 are arranged on one side of the inner ring of the filter belt 21, and the filter belts 21 are respectively sleeved on the driving wheels 211 and cooperate with the driving wheels 211 in transmission. A rotating driver 212 for rotating the driving wheel 211 is arranged at the end of any driving wheel 211, and the rotating driver 212 is preferably a servo motor. An air inlet 11 for passing the exhaust gas of the fermentation tank into the outer shell 1 is opened at the upper part of the outer shell 1. After the exhaust gas enters the outer shell 1, it is first filtered by the filter belt 21. Since the outer surface of the filter belt 21 is provided with a water-absorbing material, the water-absorbing material on the filter belt 21 adsorbs a cleaning agent that can dissolve organic matter. When the exhaust gas passes through the filter belt 21 from top to bottom, the organic matter and impurities are intercepted by the filter belt 21, and the filtered exhaust gas enters the deodorization unit 3 for deodorization. When the exhaust gas enters the outer shell 1 through the air inlet 11, the filter belt 21 rotates in the outer shell 1. As the filter belt 21 rotates, the filter belt 21 located directly below the air inlet 11 gradually rotates to the lower layer of the outer shell 1 and gradually immerses in the cleaning agent, so that the filter belt 21 intercepts the organic matter and impurities in the exhaust gas and then rotates and immerses in the cleaning agent at the bottom of the outer shell 1. At the same time, a cleaning unit 22 is also provided below the filter belt 21. The cleaning unit 22 cleans the periphery of the filter belt 21. If the filter belt 21 is out of contact with the cleaning agent at the bottom of the outer shell 1, the position of the cleaning unit 22 remains unchanged, that is, the filter belt 21 is not directly immersed in the cleaning agent, then the cleaning unit 22 has limited cleaning ability for the organic matter remaining on the filter belt 21. This is because when the organic matter contacts the filter belt 21, part of it has Organic matter will adhere to the filter belt 21, and organic matter has a certain viscosity, so that the filter belt 21 is out of contact with the detergent. Although the use time of the detergent is extended to a certain extent, there are still a lot of organic matter on the filter belt 21 after being cleaned by the cleaning unit 22, and with the passage of time, the organic matter accumulated on the filter belt 21 continues to increase, and the cleaning effect is poor. After immersing the filter belt 21 in the detergent, not only can the detergent dissolve and dilute the organic matter remaining on the filter belt 21, thereby improving the cleaning effect of the cleaning unit 22 on the filter belt 21, but also the absorbent material on the filter net 237 immersed in the detergent can fully absorb the detergent, thereby ensuring the filtering and intercepting ability of the cleaned filter net 237 to organic matter when it passes under the air inlet 11 for the second time.

[0024] By arranging a rotating filter belt 21 in the housing 1, and arranging a water-absorbing material capable of absorbing the detergent on the periphery of the filter belt 21, when the exhaust gas passes through the filter belt 21, the organic matter and materials in the exhaust gas can be intercepted by the filter belt 21, and the water-absorbing material adsorbed with the detergent can preliminarily dissolve the organic matter when it contacts with the organic matter, thereby reducing the adhesion of the organic matter on the filter belt 21, and improving the cleaning effect of the cleaning unit 22 on the filter belt 21 when the subsequent filter belt 21 passes through the cleaning unit 22. At the same time, the rotating filter belt 21 rotates into the detergent at the bottom of the housing 1 after passing through the air inlet 11, and the detergent removes the residual on the filter belt 21. The retained organic matter is soaked and dissolved, which further improves the cleaning effect of the cleaning unit 22 when cleaning the filter belt 21. At the same time, the filter screen 237 directly immersed in the detergent can make the water-absorbing material arranged on the periphery of the filter screen 237 fully absorb the detergent, so that when the filter belt 21 rotates to the bottom of the air inlet 11 for the second time, the water-absorbing material contains sufficient detergent, which reduces the possibility of organic matter sticking to the filter belt 21, thereby completing the self-cleaning function of the pretreatment unit 2, reducing the workload during manual cleaning, and there is no need to dismantle the pretreatment structure, ensuring that the purification device can continue to purify the exhaust gas in the fermentation tank.

[0025] Reference Fig.11 A receiving shell 23 for receiving the detergent dripping from the filter belt 21 is provided on one side of the inner ring of the filter belt 21. The receiving shell 23 is located above the deodorization unit 3. A ventilation groove 231 interconnected with the deodorization unit 3 is opened on the side wall of the receiving shell 23.

[0026] Since the exhaust gas entering the outer shell 1 flows from top to bottom, when the exhaust gas passes through the filter belt 21, the flowing airflow will carry part of the detergent in the water-absorbing material away from the filter belt 21. In order to prevent the detergent from dripping directly into the deodorization unit 3, a receiving shell 23 is provided above the deodorization unit 3 for receiving the detergent. A ventilation groove 231 is provided on one side of the receiving shell 23, so that the detergent dripping from the filter belt 21 is received by the receiving shell 23, and at the same time, the exhaust gas flows into the deodorization unit 3 through the ventilation groove 231, thereby realizing the function of separating the gas from the detergent.

[0027] Reference Figure 5 , Fig.11 and Fig.12 The deodorizing unit 3 includes a deodorizing box 31 connected to the ventilation groove 231, and an opening 32 is provided on the side wall of the deodorizing box 31. A fan 33 for discharging exhaust gas from the opening 32 is provided on the side wall of the shell 1 on the horizontal side of the opening 32, and the opening 32 is located in the inner ring of the filter belt 21.

[0028] A plurality of activated carbon plates 34 are evenly arranged in the vertical direction in the deodorizing box 31. After the exhaust gas enters the deodorizing box 31 through the ventilation groove 231, it passes through all the activated carbon plates 34 from top to bottom in sequence and is discharged from the opening 32. When the filter belt 21 rotates, the fan 33 is started synchronously, and the fan 33 draws out the air at the opening 32, so that a negative pressure is formed in the deodorizing box 31. The exhaust gas that passes through the filter belt 21 and enters the ventilation groove 231 can pass through the activated carbon plates 34 in the deodorizing box 31 from top to bottom in sequence. Since the lower filter belt 21 is completely immersed in the detergent, and the opening 32 on the deodorizing box 31 is located in the inner ring of the filter belt 21, in order to ensure that the filter belt 21 can rotate smoothly, there is a gap between the filter belt 21 and the inner wall of the shell 1, and by making the liquid level of the detergent higher than the lower filter belt 21, the filter belt 21 can be completely immersed in the detergent, and the opening 32 on the deodorizing box 31 is located in the inner ring of the filter belt 21. At the same time, in order to ensure that the filter belt 21 can rotate smoothly, there is a gap between the filter belt 21 and the inner wall of the shell 1. The filter belt 21 is formed on the upper surface of the filter belt 21, which ensures that the air in the gap cannot flow into the opening 32 from the bottom of the filter belt 21. Otherwise, due to the resistance of the activated carbon plate 34, when the fan 33 is running, if the cleaning agent cannot cover the filter belt 21, the exhaust gas will not pass through the filter belt 21, but will directly flow from the gap between the filter belt 21 and the outer shell 1 to the opening 32, causing the filter belt 21 and the deodorization unit 3 to lose their filtering effect. After the filter belt 21 is immersed in the cleaning agent, the opening 32 is located in the inner ring of the filter belt 21, and the gap and the opening 32 are sealed by the cleaning agent, thereby preventing the exhaust gas from flowing from the gap between the filter belt 21 and the inner wall of the outer shell 1 to the opening 32, limiting the flow direction of the exhaust gas, and allowing the exhaust gas to pass through the pretreatment unit 2 and the deodorization unit 3 smoothly in sequence.

[0029] Reference Figure 3-Figure 5 A guide pipe 233 is provided on one side of the receiving shell 23 to guide the cleaning agent to the bottom of the outer shell 1, and a sewage bin 232 is provided on one side of the deodorizing box 31. The guide pipe 233 extends into the sewage bin 232. A sewage outlet 2321 is provided at the lower part of the sewage bin 232, and the sewage outlet 2321 extends below the liquid level of the cleaning agent.

[0030] The cleaning agent dripping on the filter belt 21 is received by the receiving shell 23, and the cleaning agent received by the receiving shell 23 flows into the sewage bin 232 through the guide pipe 233. The sewage outlet 2321 at the lower part of the sewage bin 232 extends to below the liquid level of the cleaning agent. It is worth noting that when the exhaust gas from the fermentation tank is discharged into the outer shell 1, the flow of the exhaust gas is active, that is, it is not only the fan 33 that affects the flow of the exhaust gas, but the pressure in the fermentation tank also generates a driving force for the exhaust gas. Even when the fan 33 is not in use, the exhaust gas can pass through the filter belt 21 by itself and pass through the activated carbon plate 34 in turn. Therefore, after the fan 33 is set, the cleaning agent will rise along the sewage outlet 2321. However, due to the limited power of the fan 33, the cleaning agent will not flow back from the sewage bin 232 through the guide pipe 233 to the receiving shell 23.

[0031] Reference Figure 6 , Figure 7 and Fig.12 The bottom of the sewage discharge bin 232 is tilted downward toward the sewage discharge port 2321, and a nozzle 234 for discharging the cleaning agent is provided at one end of the bottom of the sewage discharge bin 232 which is at a higher position.

[0032] Since the cleaning agent received by the receiving shell 23 has been in contact with and mixed with the organic matter, some of the organic matter is not dissolved in time by the cleaning agent. Under the guidance of the guide tube 233, some of the organic matter remaining in the cleaning agent after contact with the organic matter will remain at the bottom of the sewage bin 232, and the cleaning agent is sprayed out through the nozzle 234. The bottom of the sewage bin 232 is an inclined structure, which avoids the situation where the organic matter remaining in the cleaning agent remains at the bottom of the sewage bin 232.

[0033] Reference Figure 9-11 A spiral blade 235 is horizontally rotatably arranged at the bottom of the receiving shell 23 , and the connection between the guide tube 233 and the receiving shell 23 is located at the end of the spiral blade 235 .

[0034] Since the cleaning agent received by the receiving shell 23 has been in contact with and mixed with the organic matter, some of the organic matter is not dissolved by the cleaning agent, resulting in the undissolved organic matter accumulating at the bottom of the receiving shell 23 and being unable to be discharged. After the spiral blade 235 is provided, the above situation can be avoided, so that the organic matter retained at the bottom of the receiving shell 23 can be discharged smoothly. Two first synchronous wheels 2351 are provided at the end of the spiral blade 235. The spiral blade 235 is fixedly connected to one of the first synchronous wheels 2351. A first synchronous belt 2352 is provided on the outer periphery of the two first synchronous wheels 2351. The first synchronous belt 2352 is connected to the two first synchronous wheels 2351. A synchronous wheel 2351 is respectively provided for transmission cooperation, a first bevel gear 2353 is fixedly provided on the first synchronous wheel 2351 which is not fixedly connected with the spiral blade 235, a second bevel gear 2354 is rotatably engaged on one side of the first bevel gear 2353, the axis of the first bevel gear 2353 is perpendicular to the axis of the second bevel gear 2354, a second synchronous wheel 2355 is respectively provided on the end of the second bevel gear 2354 and one of the driving wheels 211, a second synchronous wheel 2356 is sleeved on the two second synchronous wheels 2355, and the second synchronous belt 2356 is respectively provided for transmission cooperation with the two second synchronous wheels 2355. When the driving wheel 211 is driven to rotate by the rotary driver 212, the driving wheel 211 can drive the second bevel gear 2354 through the second synchronous wheel 2355 and the second synchronous belt 2356, thereby rotating the first bevel gear 2353, and driving the spiral blade 235 to rotate under the action of the first synchronous wheel 2351 and the first synchronous belt 2352.

[0035] Reference Figure 6 and Figure 7: A reflux unit 236 for supplying detergent to the nozzle 234 is arranged below the nozzle 234. The reflux unit 236 extracts detergent from the detergent stored at the bottom of the housing 1. A filter screen 237 is arranged at the front end of the input end of the reflux unit 236. The detergent first passes through the filter screen 237 and then enters the reflux unit 236.

[0036] The reflux unit 236 includes a reflux pipe 2361 vertically arranged at the lower part of the nozzle 234, and a water pump 2362 arranged on the reflux pipe 2361. The water pump 2362 pumps the detergent at the bottom of the shell 1 to the nozzle 234 through the reflux pipe 2361 for spraying. The filter 237 filters the detergent flowing into the reflux pipe 2361.

[0037] Reference Figure 5 The cleaning unit 22 includes a cleaning roller 221 rotatably disposed below the filter belt 21 , and the rotation direction of the cleaning roller 221 is opposite to the rotation direction of the filter belt 21 .

[0038] Reference Figure 8 A driving wheel 211 is rotatably provided on one side of the inner ring of the filter belt 21 and is transmission-coordinated with the inner ring of the filter belt 21. A first gear 222 is fixedly provided at the end of the driving wheel 211, and a second gear 223 is fixedly provided at the end of the cleaning roller 221. The first gear 222 and the second gear 223 are meshed with each other.

[0039] Through the transmission of the first gear 222 and the second gear 223, the rotation direction of the filter belt 21 is opposite to the rotation direction of the cleaning roller 221, so that the cleaning roller 221 has a better cleaning effect on the filter belt 21. If the rotation direction of the filter belt 21 is the same as the rotation direction of the cleaning roller 221, the cleaning roller 221 is prone to rolling when contacting the filter belt 21, resulting in the cleaning roller 221 being unable to clean the filter belt 21 normally.

[0040] Reference Figure 1 and Figure 5 An air pump 24 is arranged at the upper part of the shell 1, a first switch valve 25 is arranged at the bottom of the shell 1, and a second switch valve 26 is arranged at the air outlet end of the fan 33.

[0041] The detergent in the shell 1 needs to be replaced after being used for a period of time. This is because all the dissolved organic matter is stored at the bottom of the shell 1, causing the cleaning performance of the detergent to gradually decrease. When the detergent in the shell 1 is discharged, in order to prevent some organic matter from accumulating at the bottom of the shell 1 and clogging the bottom of the shell 1, the second switch valve 26 is closed first, and then the air pump 24 inflates the shell 1 to increase the air pressure in the shell 1. After reaching the specified pressure value, the first switch valve 25 is opened, and the detergent and organic matter in the shell 1 are discharged from the first switch valve 25.

[0042] Working principle: When the exhaust gas passes through the filter belt 21 from top to bottom, organic matter and impurities are intercepted by the filter belt 21, and the filtered exhaust gas enters the deodorization unit 3 for deodorization. When the exhaust gas enters the outer shell 1 through the air inlet 11, the filter belt 21 rotates in the outer shell 1. As the filter belt 21 rotates, the filter belt 21 located directly below the air inlet 11 gradually rotates to the lower layer of the outer shell 1 and gradually immerses in the detergent, so that the filter belt 21 intercepts the organic matter and impurities in the exhaust gas and then rotates and immerses in the detergent at the bottom of the outer shell 1. At the same time, a cleaning unit 22 is also provided below the filter belt 21. The cleaning unit 22 cleans the periphery of the filter belt 21. If the filter belt 21 is out of contact with the detergent at the bottom of the outer shell 1, the position of the cleaning unit 22 remains unchanged, that is, the filter belt 21 is not directly immersed in the detergent, then the cleaning unit 22 has limited cleaning ability for the organic matter remaining on the filter belt 21. This is because when the organic matter contacts the filter belt 21, part of it has Organic matter will adhere to the filter belt 21, and organic matter has a certain viscosity, so that the filter belt 21 is out of contact with the detergent. Although the use time of the detergent is extended to a certain extent, there are still a lot of organic matter on the filter belt 21 after being cleaned by the cleaning unit 22, and with the passage of time, the organic matter accumulated on the filter belt 21 continues to increase, and the cleaning effect is poor. After immersing the filter belt 21 in the detergent, not only can the detergent dissolve and dilute the organic matter remaining on the filter belt 21, thereby improving the cleaning effect of the cleaning unit 22 on the filter belt 21, but also the absorbent material on the filter net 237 immersed in the detergent can fully absorb the detergent, thereby ensuring the filtering and intercepting ability of the cleaned filter net 237 to organic matter when it passes under the air inlet 11 for the second time.

[0043] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A fermentation tank tail gas purification device that is easy to clean, comprising a housing (1), a pretreatment unit (2) and a deodorization unit (3); It is characterized in that The bottom of the housing (1) receives a cleaning agent capable of dissolving organic matter. The pretreatment unit (2) comprises a filter belt (21) which is rotatably arranged in the housing (1) and filters impurities in the exhaust gas. A water-absorbing material is arranged on the outer surface of the filter belt (21). The filter belt (21) is an annular structure. The lower part of the filter belt (21) is immersed below the liquid surface of the cleaning agent. The deodorization unit (3) is arranged on one side of the inner ring of the filter belt (21). A cleaning unit (22) for cleaning the outer surface of the filter belt (21) is arranged below the filter belt (21). The exhaust gas flows from the upper part of the housing (1) along a vertical direction from the outer ring side to the inner ring side of the filter belt (21). The exhaust gas entering the inner ring side of the filter belt (21) is discharged into the deodorization unit (3).

2. The fermentation tank tail gas purification device that is easy to clean according to claim 1, characterized in that: A receiving shell (23) for receiving cleaning agent dripping from the filter belt (21) is provided on one side of the inner ring of the filter belt (21); the receiving shell (23) is located above the deodorizing unit (3); and a ventilation groove (231) communicating with the deodorizing unit (3) is provided on a side wall of the receiving shell (23).

3. The fermentation tank tail gas purification device that is easy to clean according to claim 2, characterized in that: The deodorizing unit (3) comprises a deodorizing box (31) connected to the ventilation groove (231), an opening (32) is provided on a side wall of the deodorizing box (31), and a fan (33) for discharging exhaust gas from the opening (32) is provided on a side wall of the housing (1) on a horizontal side of the opening (32), wherein the opening (32) is located in the inner ring of the filter belt (21).

4. The fermentation tank tail gas purification device that is easy to clean according to claim 3 is characterized in that: A guide pipe (233) is provided on one side of the receiving shell (23) for guiding the cleaning agent to the bottom of the outer shell (1); a sewage discharge bin (232) is provided on one side of the deodorizing box (31); the guide pipe (233) extends into the sewage discharge bin (232); a sewage discharge port (2321) is provided at the bottom of the sewage discharge bin (232); and the sewage discharge port (2321) extends below the liquid surface of the cleaning agent.

5. The fermentation tank tail gas purification device that is easy to clean according to claim 4, characterized in that: The bottom of the sewage discharge bin (232) is tilted downward toward the sewage discharge port (2321), and a nozzle (234) for discharging cleaning agent is provided at a higher bottom end of the sewage discharge bin (232).

6. The easy-to-clean fermentation tank tail gas purification device according to claim 4, characterized in that: A spiral blade (235) is horizontally rotatably arranged at the bottom of the receiving shell (23), and the connection point between the guide tube (233) and the receiving shell (23) is located at the end of the spiral blade (235).

7. The easy-to-clean fermentation tank tail gas purification device according to claim 5, characterized in that: A reflux unit (236) is provided below the nozzle (234) for supplying cleaning agent to the nozzle (234); the reflux unit (236) extracts cleaning agent from the cleaning agent stored at the bottom of the housing (1); a filter screen (237) is provided at the front end of the input end of the reflux unit (236); the cleaning agent first passes through the filter screen (237) and then enters the reflux unit (236).

8. The easy-to-clean fermentation tank tail gas purification device according to claim 1, characterized in that: The cleaning unit (22) comprises a cleaning roller (221) rotatably arranged below the filter belt (21); the rotation direction of the cleaning roller (221) is opposite to the rotation direction of the filter belt (21).

9. The easy-to-clean fermentation tank tail gas purification device according to claim 8, characterized in that: A driving wheel (211) is rotatably provided on one side of the inner ring of the filter belt (21) and is transmission-coordinated with the inner ring of the filter belt (21); a first gear (222) is fixedly provided at the end of the driving wheel (211); a second gear (223) is fixedly provided at the end of the cleaning roller (221); the first gear (222) and the second gear (223) are meshed with each other.

10. The easy-to-clean fermentation tank tail gas purification device according to claim 3, characterized in that: An air pump (24) is arranged on the upper part of the housing (1), a first switch valve (25) is arranged on the bottom of the housing (1), and a second switch valve (26) is arranged on the air outlet end of the fan (33).

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