A fermentation tank tail gas purification device convenient for cleaning

Abstract

The present invention relates to the technical field of purification devices, and specifically relates to a fermentation tank tail gas purification device that is convenient for cleaning, including a housing, a pretreatment unit, and a deodorization unit; a cleaning agent capable of dissolving organic matter is received at the bottom of the housing. The pretreatment unit includes a filter belt rotatably arranged in the housing for filtering impurities in the waste gas. An absorbent 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 deodorization unit is arranged on one side of the inner ring of the filter belt. A cleaning unit for cleaning the outer surface of the filter belt is arranged below the filter belt. The tail gas flows from the upper part of the housing vertically from the outer ring side to the inner ring side of the filter belt, and the waste gas entering the inner ring side of the filter belt is discharged into the deodorization unit. The present invention reduces the workload during manual cleaning and does not require the removal of the pretreatment structure, ensuring that the purification device can continuously purify the tail gas in the fermentation tank.

Description

Technical Field

[0001] The present invention relates to the technical field of purification devices, and more particularly to a fermentation tank tail gas purification device that is easy to clean. Background Art

[0002] Currently, in the existing chemical fermentation tank odor gas purification device, a pretreatment structure is generally provided inside to filter impurities. However, when installing the pretreatment structure in the existing fermentation tank odor gas purification device, it is necessary to disassemble the purification device and place the pretreatment structure at a fixed position inside the purification device to prevent the situation where the odor cannot reach the pretreatment structure. The installation is very troublesome, and when cleaning and replacing the pretreatment structure in the future, it is necessary to perform installation and disassembly 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, including: a housing, a gas storage chamber, a placement chamber, and a purification chamber are provided inside the housing. The gas storage chamber is correspondingly arranged with an air inlet hole provided above the housing. The placement chamber is arranged on one side of the gas storage chamber for placing a pretreatment mechanism. The purification chamber is arranged below the gas storage chamber and the placement chamber, and the purification chamber communicates with the placement chamber; an exhaust pipe and a partition. The exhaust pipe is arranged on one side of the housing, and one end of the exhaust pipe is correspondingly arranged with the purification chamber. The partition is arranged between the placement chamber and the purification chamber. A chute is opened on the upper surface of the partition. A docking component is arranged below the pretreatment mechanism, and the docking component is clamped with the chute; an installation component, which consists of two telescopic arms. The two telescopic arms are respectively movably installed on both sides of the housing, and one end of the two telescopic arms can be clamped.

[0004] The above solution facilitates the disassembly of the pretreatment mechanism, but still requires manual cleaning of the pretreatment mechanism, and the cleaning workload is large. At the same time, the purification device also needs to be cleaned inside after long-term use, but the above purification device does not have a self-cleaning function. Moreover, a pretreatment mechanism and a partition are provided inside the purification device. If the purification device needs to be comprehensively cleaned, it is necessary to remove all the pretreatment mechanisms and partitions in the purification device. After the cleaning is completed, it is also necessary to install all the pretreatment mechanisms and partitions back into the purification device, which has a large workload and low efficiency. Summary of the Invention

[0005] To address the above problems, a fermentation tank tail gas purification device that is convenient for cleaning is provided. By arranging a rotating filter belt inside the outer shell and providing a water-absorbing material capable of adsorbing a cleaning agent on the outer periphery of the filter belt, when the tail gas passes through the filter belt, the 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 preliminarily dissolve the organic matter when contacting the organic matter, reducing the adhesion of the organic matter to the filter belt. When the subsequent filter belt passes through the cleaning unit, the cleaning effect of the cleaning unit on the filter belt is improved. At the same time, the rotating filter belt rotates into the cleaning agent at the bottom of the outer shell after passing through the air inlet, and the cleaning agent soaks and dissolves the residual organic matter on the filter belt, further improving the cleaning effect when the cleaning unit cleans the filter belt. At the same time, the filter net directly immersed in the cleaning agent can enable the water-absorbing material arranged on the outer periphery of the filter net to fully absorb the cleaning agent, so that when the filter belt rotates to the lower part of the air inlet for the second time, the water-absorbing material contains sufficient cleaning agent, reducing the possibility of organic matter sticking to the filter belt, thus completing the self-cleaning function of the pretreatment unit, reducing the workload during manual cleaning, and without the need to remove the pretreatment structure, ensuring that the purification device can continuously purify the tail gas in the fermentation tank.

[0006] To solve the problems of the prior art, the present invention provides a fermentation tank tail gas purification device that is convenient for cleaning, including an outer shell, a pretreatment unit, and a deodorization unit; a cleaning agent capable of dissolving organic matter is received at the bottom of the outer shell. The pretreatment unit includes a filter belt rotatably arranged inside the outer shell for filtering impurities in the waste gas. A water-absorbing 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 deodorization unit is arranged on one side of the inner ring of the filter belt. A cleaning unit for cleaning the outer surface of the filter belt is arranged below the filter belt. The tail gas flows from the upper part of the outer shell vertically from the outer ring side to the inner ring side of the filter belt, and the waste gas entering the inner ring side of the filter belt is discharged into the deodorization unit.

[0007] Preferably, a receiving shell for receiving the cleaning agent dripping from the filter belt is arranged on one side of the inner ring of the filter belt. The receiving shell is located above the deodorization unit, and a ventilation groove communicating with the deodorization unit is opened on the side wall of the receiving shell.

[0008] Preferably, the deodorization unit includes a deodorization box communicated with the ventilation groove. An opening is opened on the side wall of the deodorization box. A blower for discharging the tail gas at the opening is arranged on the side wall of the outer shell on the horizontal side of the opening. The opening is located in the inner ring of the filter belt.

[0009] Preferably, a guiding pipe for guiding the cleaning agent to the bottom of the outer shell is arranged on one side of the receiving shell. A sewage storage bin is arranged on one side of the deodorization box. The guiding pipe extends into the sewage storage bin. A sewage discharge port is arranged at the lower part of the sewage storage bin, and the sewage discharge port extends below the liquid level of the cleaning agent.

[0010] Preferably, the bottom of the sewage discharge bin slopes downward towards the sewage discharge port, and a spray head for discharging the cleaning agent is provided at the bottom end with a higher position in the sewage discharge bin.

[0011] Preferably, a spiral blade is horizontally rotatably provided at the bottom of the receiving shell, and the connection part of the guiding pipe and the receiving shell is located at the end of the spiral blade.

[0012] Preferably, a reflux unit for supplying the cleaning agent to the spray head is provided below the spray head. The reflux unit extracts the cleaning agent from the cleaning agent stored at the bottom of the outer shell. A filter screen is provided at the front end of the input end of the reflux unit, and the cleaning agent first passes through the filter screen and then enters the reflux unit.

[0013] Preferably, the cleaning unit includes a cleaning roller rotatably provided 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 in transmission cooperation 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, and a second gear is fixedly provided at the end of the cleaning roller. The first gear and the second gear are meshed with each other.

[0015] Preferably, an air pump is provided at the upper part of the outer shell, a first switching valve is provided at the bottom of the outer shell, and a second switching valve is provided at the air outlet end of the blower.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] 1. By arranging a rotating filter belt in the outer shell and an absorbent material capable of adsorbing the cleaning agent on the outer periphery of the filter belt in the present invention, when the tail gas passes through the filter belt, the organic matters and substances in the tail gas can be intercepted by the filter belt, and the absorbent material adsorbed with the cleaning agent can preliminarily dissolve the organic matters when contacting with the organic matters, reducing the adhesion of the organic matters on the filter belt, 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 outer shell after passing through the air inlet, and the cleaning agent soaks and dissolves the residual organic matters on the filter belt, further improving the cleaning effect of the cleaning unit on the filter belt when cleaning the filter belt. At the same time, the filter screen directly immersed in the cleaning agent can enable the absorbent material arranged on the outer periphery of the filter screen to fully absorb the cleaning agent, so that when the filter belt rotates to below the air inlet for the second time, the absorbent material contains sufficient cleaning agent, reducing the possibility of organic matters sticking to the filter belt, thus completing the self-cleaning function of the pretreatment unit, reducing the workload during manual cleaning, and without the need to remove the pretreatment structure, ensuring that the purification device can continuously purify the tail gas in the fermentation tank.

[0018] 2. By setting the spiral blade and the guiding pipe, the organic matter remaining in the receiving shell can be smoothly discharged through the guiding pipe. The guiding pipe discharges the organic matter into the sewage storage bin and discharges it from the sewage outlet under the action of the water flow sprayed by the nozzle, avoiding part of the undissolved organic matter remaining at the bottom of the receiving shell. And due to the limited power of the blower, the cleaning agent will not flow back through the guiding pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional schematic diagram of a fermentation tank tail gas purification device for easy cleaning according to the present invention;

[0020] Figure 2 is a side view of a fermentation tank tail gas purification device for easy cleaning according to the present invention;

[0021] Figure 3 is a fermentation tank tail gas purification device for easy cleaning according to the present invention Figure 2 in the sectional schematic diagram at A-A;

[0022] Figure 4 is a sectional three-dimensional schematic of a fermentation tank tail gas purification device for easy cleaning according to the present invention Figure 1 ;

[0023] Figure 5 is a three-dimensional schematic of a fermentation tank tail gas purification device for easy cleaning according to the present invention after removing part of the outer shell Figure 1 ;

[0024] Figure 6 is a three-dimensional schematic of a fermentation tank tail gas purification device for easy cleaning according to the present invention after removing part of the outer shell Figure 2 ;

[0025] Figure 7 is a three-dimensional schematic of a fermentation tank tail gas purification device for easy cleaning according to the present invention after removing part of the outer shell Figure 3 ;

[0026] Figure 8 is a fermentation tank tail gas purification device for easy cleaning according to the present invention Figure 7 in the partial enlarged schematic diagram at B;

[0027] Figure 9 is a sectional three-dimensional schematic of a fermentation tank tail gas purification device for easy cleaning according to the present invention after removing part of the outer shell Figure 1 ;

[0028] Figure 10 is a fermentation tank tail gas purification device for easy cleaning according to the present invention Figure 9 in the partial enlarged schematic diagram at C;

[0029] Figure 11Is a sectional three-dimensional schematic diagram of an exhaust gas purification device for a fermenter that is easy to clean according to the present invention Figure 2 ;

[0030] Figure 12 Is a sectional three-dimensional schematic diagram of an exhaust gas purification device for a fermenter that is easy to clean after removing part of the outer shell according to the present invention Figure 2 。

[0031] The reference numerals in the figure are:

[0032] 1. Outer shell; 11. Air inlet; 2. Pretreatment unit; 21. Filter belt; 211. Driving wheel; 212. Rotary drive; 22. Cleaning unit; 221. Cleaning roller; 222. First gear; 223. Second gear; 23. Receiving shell; 231. Ventilation groove; 232. Sewage bin; 2321. Sewage outlet; 233. Guide pipe; 234. Sprinkler; 235. Spiral blade; 2351. First synchronous pulley; 2352. First synchronous belt; 2353. First bevel gear; 2354. Second bevel gear; 2355. Second synchronous pulley; 2356. Second synchronous belt; 236. Return unit; 2361. Return pipe; 2362. Water pump; 237. Filter screen; 24. Air pump; 25. First switching valve; 26. Second switching valve; 3. Deodorization unit; 31. Deodorization box; 32. Opening; 33. Fan; 34. Activated carbon plate. Specific embodiments

[0033] In order to further understand the features, technical means, and specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Refer to Figures 1-4 : An exhaust gas purification device for a fermenter that is easy to clean, including an outer shell 1, a pretreatment unit 2, and a deodorization unit 3; a cleaning agent capable of dissolving organic substances is received at the bottom of the outer shell 1. The pretreatment unit 2 includes a filter belt 21 rotatably provided in the outer shell 1 for filtering impurities in the waste gas. An absorbent material is provided on the outer surface of the filter belt 21. The filter belt 21 is an annular structure, and the lower part of the filter belt 21 is immersed below the liquid level of the cleaning agent. The deodorization unit 3 is provided 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 provided below the filter belt 21. The exhaust gas flows from the upper part of the outer shell 1 vertically from the outer ring side to the inner ring side of the filter belt 21, and the exhaust gas entering the inner ring side of the filter belt 21 is discharged into the deodorization unit 3.

[0035] The impurities included in the tail gas generated during fermentation in existing fermenters mainly consist of dust and organic matter. Depending on the usage scenarios of the fermenters, the dust content in some fermenters is relatively low, but there is a large amount of organic matter mixed in the gas. Most organic matters have a certain viscosity. In the traditional odor removal unit 3, activated carbon is mostly used for odor removal treatment. When treating the tail gas of the fermenter, it mainly includes two treatment steps. One is the pretreatment process, in which the dust and organic matter in the tail gas are pre-filtered. The other is the odor removal process, in which the odor in the waste gas is adsorbed through the odor removal unit 3. Since most of the odor removal unit 3 is composed of activated carbon, if the pretreatment unit 2 is not set before the odor removal unit 3, the viscous organic matter will adhere to the activated carbon of the odor removal unit 3. After being used for a period of time, the activated carbon will be wrapped with organic matter, resulting in the inability of the activated carbon to come into contact with the tail gas. This not only reduces the flow rate of the waste gas passing through the odor removal unit 3 but also increases the frequency of replacing the activated carbon, leading to a significant drop in the waste gas treatment capacity of the odor removal unit 3 as it is used, and at the same time, the use cost of the activated carbon is relatively high. After the pretreatment unit 2 is set, although the existing pretreatment unit 2 can intercept the organic matter, it cannot achieve self-cleaning. After being used for a period of time, the pretreatment unit 2 still needs to be disassembled for manual cleaning. Moreover, the cleaning of the organic matter accumulated in the pretreatment unit 2 for a long time is very difficult, the workload of cleaning is large, and when cleaning, the fermenter tail gas purification device needs to stop purifying.

[0036] To avoid the above situation, the existing pretreatment unit 2 is improved so that the pretreatment unit 2 can continuously clean itself, neither showing a decline in treatment capacity over time nor requiring regular disassembly, reducing the workload and ensuring that the purification device can continuously purify the tail gas of the fermenter. The specific structure and working process of the pretreatment unit 2 are as follows:

[0037] A plurality of driving wheels 211 are arranged on the inner ring side of the filter belt 21. The filter belt 21 is sleeved on the driving wheels 211 respectively and is in transmission cooperation with the driving wheels 211. A rotary driver 212 for rotating the driving wheel 211 is arranged at the end of any one of the driving wheels 211. The rotary driver 212 is preferably a servo motor. An air inlet 11 for introducing the tail gas of the fermentation tank into the housing 1 is provided in the upper part of the housing 1. After the tail gas enters the housing 1, it is first filtered by the filter belt 21. Since a water-absorbing material is provided on the outer surface of the filter belt 21, a cleaning agent capable of dissolving organic substances is adsorbed on the water-absorbing material of the filter belt 21. When the waste gas passes through the filter belt 21 from top to bottom, both organic substances and impurities are intercepted by the filter belt 21. The filtered tail gas enters the deodorizing unit 3 for deodorization. When the tail gas enters the housing 1 through the air inlet 11, the filter belt 21 rotates in the housing 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 housing 1 and gradually immerses in the cleaning agent, so that after the filter belt 21 intercepts organic substances and impurities in the tail gas, it rotates and immerses in the cleaning agent at the bottom of the housing 1. At the same time, a cleaning unit 22 is also provided below the filter belt 21 to clean the periphery of the filter belt 21. If the filter belt 21 is separated from the cleaning agent at the bottom of the housing 1, that is, the filter belt 21 does not directly immerse in the cleaning agent, the cleaning ability of the cleaning unit 22 for the organic substances remaining on the filter belt 21 is limited. This is because when the organic substances come into contact with the filter belt 21, some of the organic substances will adhere to the filter belt 21, and the organic substances have a certain viscosity, causing the filter belt 21 to be separated from the cleaning agent. Although the service time of the cleaning agent is extended to a certain extent, there are still a large amount of organic substances on the filter belt 21 after being cleaned by the cleaning unit 22. And as the use time goes by, the organic substances accumulated on the filter belt 21 continuously increase, and the cleaning effect is poor. However, after the filter belt 21 is immersed in the cleaning agent, not only can the cleaning agent dissolve and dilute the organic substances remaining on the filter belt 21, improving the cleaning effect of the cleaning unit 22 on the filter belt 21, but also the water-absorbing material on the filter net 237 immersed in the cleaning agent can fully absorb the cleaning agent, ensuring the filtering and intercepting ability of the cleaned filter net 237 for organic substances when it passes below the air inlet 11 for the second time.

[0038] By arranging a rotating filter belt 21 inside the housing 1 and providing a water-absorbing material capable of adsorbing a cleaning agent on the outer periphery of the filter belt 21, when the tail gas passes through the filter belt 21, the organic matters and materials in the tail gas can be intercepted by the filter belt 21, and the water-absorbing material adsorbed with the cleaning agent can preliminarily dissolve the organic matters when contacting the organic matters, reducing the adhesion of the organic matters on the filter belt 21, 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 turns into the cleaning agent at the bottom of the housing 1 after passing through the air inlet 11, and the cleaning agent soaks and dissolves the residual organic matters on the filter belt 21, further improving the cleaning effect of the cleaning unit 22 when cleaning the filter belt 21. At the same time, the filter net 237 directly immersed in the cleaning agent can enable the water-absorbing material arranged on the outer periphery of the filter net 237 to fully absorb the cleaning agent, so that when the filter belt 21 turns to the lower part of the air inlet 11 for the second time, the water-absorbing material contains sufficient cleaning agent, reducing the possibility of organic matters adhering to the filter belt 21, thus completing the self-cleaning function of the pretreatment unit 2, reducing the workload during manual cleaning, and without the need to remove the pretreatment structure, ensuring that the purification device can continuously purify the tail gas in the fermentation tank.

[0039] Refer to Figure 11 : A receiving shell 23 for receiving the cleaning agent dripping from the filter belt 21 is arranged 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 opened on the side wall of the receiving shell 23.

[0040] Since the tail gas entering the housing 1 all flows from top to bottom, when the tail gas passes through the filter belt 21, the flowing air current will carry part of the cleaning agent in the water-absorbing material away from the filter belt 21. In order to prevent the cleaning agent from directly dripping into the deodorizing unit 3, the receiving shell 23 is arranged above the deodorizing unit 3 for receiving. A ventilation groove 231 is arranged on one side of the receiving shell 23. Thus, the cleaning agent dripping from the filter belt 21 is received by the receiving shell 23, and at the same time, the tail gas flows into the deodorizing unit 3 through the ventilation groove 231, realizing the function of separating the gas from the cleaning agent.

[0041] Refer to Figure 5 、 Figure 11 and Figure 12 : The deodorizing unit 3 includes a deodorizing box 31 communicated with the ventilation groove 231. An opening 32 is opened on the side wall of the deodorizing box 31. A blower 33 for discharging the tail gas at the opening 32 is arranged on the side wall of the housing 1 on the horizontal side of the opening 32. The opening 32 is located in the inner ring of the filter belt 21.

[0042] A plurality of activated carbon plates 34 are uniformly arranged vertically in the deodorizing box 31. After the tail gas enters the deodorizing box 31 through the ventilation groove 231, it passes through all the activated carbon plates 34 from top to bottom and is discharged from the opening 32. When the filter belt 21 rotates, the fan 33 is started synchronously. The fan 33 extracts the air at the opening 32, creating a negative pressure in the deodorizing box 31. The tail gas passing through the filter belt 21 and entering the ventilation groove 231 can then pass through the activated carbon plates 34 in the deodorizing box 31 from top to bottom. Since the lower layer of the filter belt 21 is completely immersed in the cleaning agent, and the opening 32 on the deodorizing box 31 is located in the inner ring of the filter belt 21, and at the same time, to ensure the smooth rotation of the filter belt 21, there is a gap between the filter belt 21 and the inner wall of the housing 1. By making the liquid level of the cleaning agent higher than the lower layer of the filter belt 21, it is ensured that the air in the gap cannot flow into the opening 32 from below the filter belt 21. Otherwise, due to the resistance of the activated carbon plates 34, when the fan 33 is running, if the cleaning agent cannot submerge the filter belt 21, the waste gas will not pass through the filter belt 21 but directly flow to the opening 32 from the gap between the filter belt 21 and the housing 1, resulting in the loss of the filtering effect of the filter belt 21 and the deodorizing unit 3. After immersing the filter belt 21 in the cleaning agent and making the opening 32 located in the inner ring of the filter belt 21, the cleaning agent seals the gap and the opening 32, preventing the tail gas from flowing from the gap between the filter belt 21 and the inner wall of the housing 1 to the opening 32, restricting the flow direction of the tail gas and enabling the tail gas to pass through the pretreatment unit 2 and the deodorizing unit 3 smoothly.

[0043] Refer to Figures 3-5 : A guiding pipe 233 for draining the cleaning agent to the bottom of the housing 1 is provided on one side of the receiving shell 23. A sewage storage bin 232 is provided on one side of the deodorizing box 31. The guiding pipe 233 extends into the sewage storage bin 232. A sewage outlet 2321 is provided at the lower part of the sewage storage bin 232, and the sewage outlet 2321 extends below the liquid level of the cleaning agent.

[0044] The cleaning agent dripping from the filter belt 21 is received by the receiving shell 23. The cleaning agent received by the receiving shell 23 flows into the sewage storage bin 232 through the guiding pipe 233. The sewage outlet 2321 at the lower part of the sewage storage bin 232 extends below the liquid level of the cleaning agent. It should be noted that when the tail gas of the fermentation tank is discharged into the housing 1, the flow of the tail gas is active, that is, not only the fan 33 acts on the flow of the tail gas, but also the pressure in the fermentation tank generates a driving force on the tail gas. Even when the fan 33 is not running, the tail gas can still pass through the filter belt 21 and the activated carbon plates 34 in sequence. Therefore, after the fan 33 is set, the cleaning agent will rise along the sewage outlet 2321, but due to the limited power of the fan 33, the cleaning agent will not flow back from the sewage storage bin 232 through the guiding pipe 233 to the receiving shell 23.

[0045] Refer to Figure 6 、 Figure 7 andFigure 12 : The bottom of the sewage discharge bin 232 slopes downward towards the sewage discharge port 2321, and a spray head 234 for discharging the cleaning agent is provided at the bottom end with a higher position of the sewage discharge bin 232.

[0046] Since the cleaning agent received by the receiving shell 23 has come into contact and mixed with the organic matter, and there is a situation where some organic matter has not been dissolved by the cleaning agent in time, under the guidance of the guiding pipe 233, some of the organic matter remaining in the cleaning agent after contacting the organic matter will remain at the bottom of the sewage discharge bin 232. And by spraying the cleaning agent through the spray head 234, and the bottom of the sewage discharge bin 232 is of an inclined structure, it avoids the situation where the organic matter remaining in the cleaning agent remains at the bottom of the sewage discharge bin 232.

[0047] Refer to Figures 9-11 : A spiral blade 235 is horizontally rotatably arranged at the bottom of the receiving shell 23, and the connection part of the guiding pipe 233 and the receiving shell 23 is located at the end of the spiral blade 235.

[0048] Since the cleaning agent received by the receiving shell 23 has come into contact and mixed with the organic matter, and there is a situation where some organic matter has not been dissolved by the cleaning agent, resulting in the undissolved organic matter accumulating at the bottom of the receiving shell 23 and unable to be discharged. After the spiral blade 235 is provided, the above situation can be avoided, enabling the organic matter remaining at the bottom of the receiving shell 23 to be discharged smoothly. Two first synchronous wheels 2351 are provided at the end of the spiral blade 235, and the spiral blade 235 is fixedly connected to one of the first synchronous wheels 2351. A first synchronous belt 2352 is sleeved outside the two first synchronous wheels 2351, and the first synchronous belt 2352 is respectively in driving cooperation with the two first synchronous wheels 2351. A first bevel gear 2353 is fixedly arranged on the first synchronous wheel 2351 not fixedly connected to the spiral blade 235. A second bevel gear 2354 is rotatably meshed on one side of the first bevel gear 2353, and 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 at the ends of the second bevel gear 2354 and one of the driving wheels 211. A second synchronous belt 2356 is sleeved on the two second synchronous wheels 2355, and the second synchronous belt 2356 is respectively in driving cooperation with the two second synchronous wheels 2355. When the driving wheel 211 rotates under the drive of 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, and then make the first bevel gear 2353 rotate. Under the action of the first synchronous wheel 2351 and the first synchronous belt 2352, the spiral blade 235 is driven to rotate.

[0049] Refer to Figure 6 and Figure 7:There is a reflux unit 236 below the nozzle 234 for supplying the cleaner to the nozzle 234. The reflux unit 236 extracts the cleaner from the cleaner stored at the bottom of the housing 1. A filter screen 237 is provided at the front end of the input of the reflux unit 236, and the cleaner first passes through the filter screen 237 and then enters the reflux unit 236.

[0050] The reflux unit 236 includes a reflux pipe 2361 vertically arranged below the nozzle 234 and a water pump 2362 arranged on the reflux pipe 2361. The water pump 2362 pumps the cleaner at the bottom of the housing 1 to the nozzle 234 through the reflux pipe 2361 for spraying, and the filter screen 237 filters the cleaner flowing into the reflux pipe 2361.

[0051] Refer to Figure 5 :The cleaning unit 22 includes a cleaning roller 221 rotatably arranged below the filter belt 21, and the rotation direction of the cleaning roller 221 is opposite to that of the filter belt 21.

[0052] Refer to Figure 8 :A driving wheel 211 in transmission cooperation with the inner ring of the filter belt 21 is rotatably arranged on one side of the inner ring of the filter belt 21. A first gear 222 is fixedly arranged at the end of the driving wheel 211, and a second gear 223 is fixedly arranged at the end of the cleaning roller 221. The first gear 222 and the second gear 223 mesh with each other.

[0053] Through the transmission of the first gear 222 and the second gear 223, the rotation direction of the filter belt 21 is opposite to that of the cleaning roller 221, making the cleaning effect of the cleaning roller 221 on the filter belt 21 better. If the rotation direction of the filter belt 21 is the same as that of the cleaning roller 221, rolling is likely to occur when the cleaning roller 221 contacts the filter belt 21, resulting in the cleaning roller 221 being unable to clean the filter belt 21 normally.

[0054] Refer to Figure 1 and Figure 5 :An air pump 24 is arranged at the upper part of the housing 1, a first on-off valve 25 is arranged at the bottom of the housing 1, and a second on-off valve 26 is arranged at the air outlet end of the fan 33.

[0055] The cleaner in the housing 1 needs to be replaced after being used for a period of time because all the dissolved organic matter is stored at the bottom of the housing 1, resulting in a gradual decrease in the cleaning performance of the cleaner. When discharging the cleaner in the housing 1, in order to prevent part of the organic matter from accumulating at the bottom of the housing 1 and blocking the bottom of the housing 1, first close the second on-off valve 26, and then the air pump 24 inflates the housing 1, causing the air pressure in the housing 1 to rise. After reaching the specified pressure value, open the first on-off valve 25, and the cleaner and organic matter in the housing 1 are discharged from the first on-off valve 25.

[0056] Working principle: When the tail gas passes through the filter belt 21 from top to bottom, both organic substances and impurities are intercepted by the filter belt 21, and the filtered tail gas enters the deodorizing unit 3 for deodorization. When the tail gas enters the housing 1 through the air inlet 11, the filter belt 21 rotates inside the housing 1. As the filter belt 21 rotates, the filter belt 21 directly below the air inlet 11 gradually rotates to the lower layer of the housing 1 and gradually immerses in the cleaning agent, so that the filter belt 21 is rotated and immersed in the cleaning agent at the bottom of the housing 1 after intercepting the organic substances and impurities in the tail gas. At the same time, a cleaning unit 22 is also provided below the filter belt 21, and the cleaning unit 22 cleans the periphery of the filter belt 21. If the filter belt 21 is separated from the cleaning agent at the bottom of the housing 1, the position of the cleaning unit 22 remains unchanged, that is, the filter belt 21 does not directly immerse in the cleaning agent, then the cleaning ability of the cleaning unit 22 for the organic substances remaining on the filter belt 21 is limited. This is because when the organic substances come into contact with the filter belt 21, some of the organic substances will adhere to the filter belt 21, and the organic substances have a certain viscosity, making the filter belt 21 separated from the cleaning agent. Although the service time of the cleaning agent is extended to a certain extent, there are still a large number of organic substances on the filter belt 21 after being cleaned by the cleaning unit 22, and as the service time goes by, the organic substances accumulated on the filter belt 21 continuously increase, and the cleaning effect is poor. However, after the filter belt 21 is immersed in the cleaning agent, not only can the cleaning agent dissolve and dilute the organic substances remaining on the filter belt 21, improving the cleaning effect of the cleaning unit 22 on the filter belt 21, but also the water-absorbing material on the filter mesh 237 immersed in the cleaning agent can fully absorb the cleaning agent, ensuring the filtering and intercepting ability of the cleaned filter mesh 237 for organic substances when passing below the air inlet 11 for the second time.

[0057] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, 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 appended claims.

Claims

1. A fermentation tank tail gas purification device convenient for cleaning, comprising a housing (1), a pretreatment unit (2) and an odor removal unit (3); It is characterized in that A cleaner capable of dissolving organic matter is received at the bottom of the housing (1). The pretreatment unit (2) includes a filter belt (21) rotatably arranged in the housing (1) for filtering impurities in the waste gas. An absorbent material is arranged on the outer surface of the filter belt (21). The filter belt (21) is of an annular structure. The lower part of the filter belt (21) is immersed below the liquid level of the cleaner. The odor removal 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 tail gas flows from the upper part of the housing (1) vertically from the outer ring side to the inner ring side of the filter belt (21), and the waste gas entering the inner ring side of the filter belt (21) is discharged into the odor removal unit (3); On one side of the inner ring of the filter belt (21), a receiving shell (23) for receiving the cleaner dripping from the filter belt (21) is arranged. The receiving shell (23) is located above the odor removal unit (3). An air vent groove (231) communicating with the odor removal unit (3) is arranged on the side wall of the receiving shell (23); The odor removal unit (3) includes an odor removal box (31) communicating with the air vent groove (231). An opening (32) is arranged on the side wall of the odor removal box (31). A blower (33) for discharging the tail gas at the opening (32) is arranged on the side wall of the housing (1) on the horizontal side of the opening (32). The opening (32) is located in the inner ring of the filter belt (21); On one side of the receiving shell (23), a guiding pipe (233) for guiding the cleaner to the bottom of the housing (1) is arranged. On one side of the odor removal box (31), a sewage discharge bin (232) is arranged. The guiding pipe (233) extends into the sewage discharge bin (232). A sewage discharge port (2321) is arranged at the lower part of the sewage discharge bin (232), and the sewage discharge port (2321) extends below the liquid level of the cleaner.

2. The exhaust gas purification device for a fermentation tank that is easy to clean according to claim 1, wherein, The bottom of the sewage discharge bin (232) slopes downward towards the sewage discharge port (2321). A spray head (234) for discharging the cleaner is arranged at the higher end of the bottom of the sewage discharge bin (232).

3. The tail gas purification device for a fermentation tank that is convenient for cleaning according to claim 1, wherein, A spiral blade (235) is horizontally rotatably arranged at the bottom of the receiving shell (23). The connection part of the guiding pipe (233) and the receiving shell (23) is located at the end of the spiral blade (235).

4. The tail gas purification device of a fermenter that is easy to clean according to claim 2, wherein, Below the spray head (234), a reflux unit (236) for supplying the cleaner to the spray head (234) is arranged. The reflux unit (236) extracts the cleaner from the cleaner 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 cleaner first passes through the filter screen (237) and then enters the reflux unit (236).

5. The tail gas purification device for a fermenter that is easy to clean according to claim 1, wherein, The cleaning unit (22) includes 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).

6. The tail gas purification device of a fermenter which is convenient for cleaning according to claim 5, characterized in that On the inner ring side of the filter belt (21), a driving wheel (211) in transmission cooperation with the inner ring of the filter belt (21) is rotatably arranged. A first gear (222) is fixedly arranged at the end of the driving wheel (211), and a second gear (223) is fixedly arranged at the end of the cleaning roller (221). The first gear (222) and the second gear (223) are meshed with each other.

7. The tail gas purification device of a fermentation tank that is convenient for cleaning according to claim 1, wherein An air pump (24) is arranged at the upper part of the housing (1), a first switching valve (25) is arranged at the bottom of the housing (1), and a second switching valve (26) is arranged at the air outlet end of the fan (33).

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