Multi-channel shunting type industrial waste gas microbial degradation device

Abstract

The invention relates to a multi-channel shunting type industrial waste gas microbiological degradation device, which adopts a double-biological deodorization box shunting structure, is matched with a mechanical control device to link a first valve and two second valves, can flexibly switch a two-way working form and a single-way working form, and has the following three core advantages: 1, the treatment continuity is ensured; during microbial attenuation complementary cultivation and maintenance of the box body on one side, a single-pass mode is switched to start the box body on the other side, the whole machine does not need to be shut down, a bacterial liquid complementary cultivation window period does not need to be filled, and all-weather uninterrupted deodorization is achieved; 2, the device adapts to working condition fluctuation, a single-pass mode is started for low-concentration waste gas, the double centrifugal fans intensively extract air, speed and efficiency are increased, and invalid staying is reduced; a double-pass mode is started for high-concentration waste gas, double boxes are connected in parallel to expand flux, and full degradation of the waste gas is ensured; the mechanical control device achieves synchronous opening and closing of the valve and one-key mode switching, flow can be rapidly adjusted according to flora activity and waste gas concentration, the degradation working condition is stabilized, and the operation and maintenance efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a multi-channel diversion type industrial waste gas microbial degradation device. Background Technology

[0002] Industrial waste gas microbial degradation technology has been widely used in the treatment of odorous gases and VOCs due to its green and environmentally friendly characteristics, low operating costs, and lack of secondary pollution. Currently, most mainstream biological deodorization devices on the market adopt a single-threaded series operation mode. That is, waste gas is input through a single inlet, flows sequentially through a biological treatment chamber, a packing layer, and other series treatment modules, and is finally discharged through a single outlet. The equipment structure is fixed and monotonous; once installed on-site, it is permanently put into operation, making it impossible to flexibly adjust the airflow path and treatment mode according to operating conditions. This has revealed many insurmountable shortcomings in actual industrial operation and maintenance.

[0003] Firstly, the single-threaded solidification structure has no redundant processing channels. Once the equipment needs maintenance, packing replacement, or microbial cultivation, the entire machine must be shut down, making it impossible to achieve continuous waste gas treatment and failing to meet the waste gas treatment needs of industrial enterprises that operate 24 hours a day without interruption.

[0004] Secondly, the concentration of exhaust gas emissions fluctuates significantly during industrial production. When the exhaust gas concentration is low and the pollutant load is small, there is no need for the exhaust gas to remain in the biological deodorization box for a long time. However, existing single-thread devices are difficult to adjust the airflow rate and treatment path, and can only be processed according to a fixed process, resulting in excessively long exhaust gas retention time, high energy consumption, and a significant reduction in overall treatment efficiency, making it impossible to achieve the optimal allocation of resources and efficiency.

[0005] In summary, existing single-threaded biological deodorization devices cannot adapt to the actual needs of microbial life cycle patterns, fluctuating waste gas loads, and continuous production, thus limiting the efficiency of waste gas treatment and the convenience of enterprise operation and maintenance. There is an urgent need to develop a diversion degradation device that can flexibly switch working modes. Summary of the Invention

[0006] The present invention aims to at least partially solve one of the problems existing in the existing related technologies. To this end, the present invention proposes a multi-channel diversion type industrial waste gas microbial degradation device.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A multi-channel diversion type industrial waste gas microbial degradation device includes two biological deodorization boxes spaced apart on the left and right. Each biological deodorization box has an air inlet and an air outlet at its front and rear ends, respectively. An air outlet pipe is connected to each air outlet. A T-junction is installed on each of the two air outlet pipes. A connecting pipe is connected between the two T-junction pipes. A first valve is installed on the connecting pipe. A second valve is installed on each of the two air outlet pipes, located between the T-junction pipe and the air outlet. A mechanical control device is also installed between the two air outlet pipes. The mechanical control device is used to simultaneously control the operation of the first valve and the two second valves, including both a double-channel operating mode and a single-channel operating mode.

[0009] In dual-flow operation mode, the first valve is closed and both second valves are open.

[0010] In single-pass operation mode, the first valve is open, and either of the two second valves is open while the other is closed.

[0011] In some embodiments, centrifugal fans are connected to the ends of both air outlet pipes, and the exhaust ports of both centrifugal fans are connected to chimneys through exhaust pipes.

[0012] In some embodiments, the first valve and the two second valves are both plug valves.

[0013] In some embodiments, of the two second valves, the left one is the left valve and the right one is the right valve. The mechanical control device includes a support frame disposed between the two air outlet pipes. A slide rail is provided at the upper end of the support frame. A sliding plate slides left and right on the slide rail. A middle rack, a left rack, and a right rack are respectively provided on the sliding plate. A drive motor is mounted on the support frame. A drive gear and a first transmission wheel are respectively provided on the output shaft of the drive motor. The drive gear meshes with the middle rack. A left gear that meshes with the left rack is provided on the valve stem of the left valve. A right gear that meshes with the right rack is provided on the valve stem of the right valve. A second transmission wheel is provided on the valve stem of the first valve. A transmission belt connects the first transmission wheel and the second transmission wheel.

[0014] In some embodiments, air inlet pipes are connected to both air inlets.

[0015] In some embodiments, a three-way valve is connected between the two air inlet pipes, and another port of the three-way valve is connected to an exhaust gas inlet pipe.

[0016] In some embodiments, a pretreatment filter box is connected in series on the exhaust gas inlet pipe, and the pretreatment filter box contains a primary filter, a demisting layer, and an activated carbon adsorption layer arranged in sequence.

[0017] In some embodiments, limit blocks are provided at both the left and right ends of the sliding plate.

[0018] In some embodiments, both biological deodorization boxes are provided with observation windows on their side walls and inspection doors on their top walls.

[0019] In some embodiments, an exhaust gas concentration detection probe is installed on the exhaust pipe.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. Relying on the diversion structure of the dual biological deodorization boxes, combined with the single-pass and dual-pass mode switching function, when the activity of microorganisms inside one box decreases, when it is necessary to spray and replenish the bacterial solution, or when maintenance is required, it can be switched to the single-pass working mode, the second valve corresponding to that box is closed, and the treatment channel of the other box is opened, so that the spare box can continue to degrade the exhaust gas. The microorganisms in the replenishment box have sufficient time to colonize and reproduce, without the need to shut down the whole machine or reduce the air intake, completely filling the treatment gap during the bacterial solution replenishment period, ensuring the deodorization system operates stably around the clock, eliminating production stoppage losses, and greatly improving the continuity of exhaust gas treatment.

[0022] 2. For low-concentration, low-load waste gas scenarios, it can precisely switch to single-pass operation mode, and cooperate with dual centrifugal fans to centrally exhaust the single-sided biological deodorization box, optimize airflow velocity, shorten the ineffective residence time of waste gas in the box, and allow the gas to quickly flow through the treatment module to complete degradation, which not only avoids resource waste, but also significantly increases the waste gas treatment capacity per unit time; for high-concentration, high-load waste gas scenarios, it switches to dual-pass operation mode, with the two boxes processing in parallel at the same time, expanding the treatment throughput, ensuring that the waste gas is fully degraded, and achieving adaptive and efficient treatment under high and low concentration conditions.

[0023] 3. The mechanical control device synchronously coordinates the opening and closing of the first valve and the two second valves, enabling one-button switching between dual-pass and single-pass modes without complicated and cumbersome operations; operators can quickly adjust the airflow path according to the microbial activity and exhaust gas concentration to ensure a stable microbial degradation environment. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the waste gas microbial degradation device of the present invention.

[0025] Figure 2 This is a front view schematic diagram of the waste gas microbial degradation device of the present invention.

[0026] Figure 3 This is a top view schematic diagram of the waste gas microbial degradation device of the present invention.

[0027] Figure 4 For the present invention Figure 1 Enlarged diagram of point A.

[0028] Figure 5 This is a schematic diagram of the single-pass working mode of the present invention. Detailed Implementation

[0029] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0030] like Figures 1-5 The multi-channel diversion type industrial waste gas microbial degradation device shown includes two biological deodorization boxes 1 arranged at left and right intervals. The front and rear ends of the two biological deodorization boxes 1 are respectively provided with air inlets 2 and air outlets 3. Air outlet pipes 4 are connected to the air outlets 3. T-pipes 5 are provided on both air outlet pipes 4. A connecting pipe 6 is connected between the two T-pipes 5. A first valve 8 is provided on the connecting pipe 6. A second valve 7 is provided on both air outlet pipes 4. The second valve 7 is located between the T-pipe 5 and the air outlet 3. A mechanical control device is also provided between the two air outlet pipes 4. The mechanical control device is used to simultaneously control the first valve 8 and the two second valves 7 to work, including a double-pass working mode and a single-pass working mode.

[0031] In dual-channel operation, the mechanical control device drives the first valve 8 to close, while both second valves 7 remain open. The waste gas to be treated enters the corresponding chamber from the air inlets 2 of the two biological deodorization chambers 1, undergoes microbial degradation treatment, and is discharged from their respective air outlets 3. The treated gas flows sequentially through the open second valves 7, the air outlet duct 4, and the three-way duct 5 before being discharged directly to the rear. In this mode, the two biological deodorization chambers 1 operate independently and in parallel, simultaneously treating waste gas, adapting to scenarios with large air volume and high concentration of waste gas degradation, and ensuring treatment throughput.

[0032] In single-pass operation mode, the mechanical control device drives the first valve 8 to open, while simultaneously controlling one of the two second valves 7 to open and the other to close. The waste gas to be treated enters only from the air inlet 2 of the biological deodorization box 1 corresponding to the open second valve 7, and after being treated by microorganisms inside the box, it is discharged from the air outlet 3 of the box, flowing sequentially through the open second valve 7, the air outlet duct 4, and the three-way pipe 5. Subsequently, the gas flows through the open connecting pipe 6 and the other three-way pipe 5, through the section of the air outlet duct 4 corresponding to the closed second valve 7, and is finally discharged uniformly to the rear. In this mode, a single biological deodorization box 1 undertakes the waste gas treatment work, while the other biological deodorization box 1 can be shut down for standby, microbial cultivation, or equipment maintenance, achieving uninterrupted treatment and flexible operation and maintenance.

[0033] In this invention, centrifugal fans 21 are connected to the ends of both air outlet pipes 4, and the exhaust ports of both centrifugal fans 21 are connected to chimneys 24 through exhaust pipes 23.

[0034] When the centrifugal fan 21 is powered on, it generates negative pressure suction, which provides the power to transport the treated waste gas in the outlet duct 4, accelerates the airflow discharge, and avoids the problem of waste gas stagnation caused by gas accumulation in the pipeline and insufficient air pressure. The clean gas after degradation treatment by the biological deodorization box 1 flows into the centrifugal fan 21 along the outlet duct 4, and is then transported to the exhaust pipe 23 through the exhaust port of the centrifugal fan 21. Finally, it is discharged into the air through the chimney 24, realizing the orderly discharge of qualified waste gas and improving the exhaust efficiency and emission standard of the whole set of equipment.

[0035] In dual-channel operation mode, the first valve 8 is closed and both second valves 7 are open. The two centrifugal fans 21 start and run synchronously, respectively drawing negative pressure air from the corresponding air outlet pipes 4. The treated gas discharged from the two biological deodorization boxes 1 enters the corresponding centrifugal fan 21 after passing through their respective second valves 7 and air outlet pipes 4. The two airflows independently flow into the chimney 24 through the exhaust pipes 23, realizing dual-path parallel exhaust, which is suitable for the rapid emission requirements of large-volume waste gas treatment.

[0036] In single-pass operation mode, the first valve 8 and a single second valve 7 are open, and the two centrifugal fans 21 can work together to exhaust air from the single-sided flow pipe. The treated gas discharged from the single-sided biological deodorization box 1 passes through the opened second valve 7, the exhaust pipe 4, the tee pipe 5, the connecting pipe 6, and the section of the other side tee pipe 5 and the exhaust pipe 4. Under the combined negative pressure of the centrifugal fans 21 on both sides, it is accelerated into the exhaust pipe 23 and finally discharged through the chimney 24. The coordinated exhaust of the centrifugal fans 21 on both sides can increase the flow rate of the single-path airflow, shorten the transport time of low-concentration waste gas, and further improve the waste gas treatment and emission efficiency in single-pass mode.

[0037] In this invention, the first valve 8 and the two second valves 7 are both plug valves.

[0038] See Figure 1 , Figure 4 , Figure 5 As shown, of the two second valves 7, the left one is the left valve and the right one is the right valve. The mechanical control device includes a support frame 41 located between the two air outlet pipes 4. A slide rail 42 is provided at the upper end of the support frame 41. A sliding plate 43 slides left and right on the slide rail 42. A middle rack 44, a left rack 45, and a right rack 46 are respectively provided on the sliding plate 43. A drive motor 47 is installed on the support frame 41. A drive gear 48 and a first transmission wheel 49 are respectively provided on the output shaft of the drive motor 47. The drive gear 48 meshes with the middle rack 44. A left gear 410 meshing with the left rack 45 is provided on the valve stem of the left valve. A right gear 411 meshing with the right rack 46 is provided on the valve stem of the right valve. A second transmission wheel 412 is provided on the valve stem of the first valve 8. A transmission belt 413 connects the first transmission wheel 49 and the second transmission wheel 412.

[0039] In dual-channel working mode (such as) Figure 4 As shown), the sliding plate 43 is in the initial sliding position, the left rack 45 and the left gear 410, and the right rack 46 and the right gear 411 are all in a disengaged state. The valve stems of the left valve and the right valve are not limited by the rack and remain open, thereby realizing the dual-pass mode of independent exhaust of the dual-path biological deodorization box 1.

[0040] When it is necessary to switch to single-pass working mode (such as...) Figure 5 As shown, when the left valve is opened and the right valve is closed, the drive motor 47 is powered on and started. The output shaft drives the drive gear 48 and the first transmission wheel 49 to rotate synchronously. The drive gear 48 meshes with the middle rack 44, pushing the sliding plate 43 to slide to the right along the slide rail 42. During the sliding process, the right rack 46 gradually meshes with the right gear 411, driving the right gear 411 to rotate, which in turn drives the right valve stem to rotate, completely closing the right valve. After the left rack 45 moves to the right with the sliding plate 43, it remains disengaged from the left gear 410, and the left valve remains open. At the same time, the first transmission wheel 49 rotates synchronously with the output shaft of the drive motor 47, driving the second transmission wheel 412 to rotate synchronously through the transmission belt 413. The second transmission wheel 412 drives the first valve 8 stem to rotate, thus fully opening the first valve 8. Finally, a single-pass working state is achieved with the first valve 8 open, the left valve open, and the right valve closed, completing the switching of the airflow diversion channel.

[0041] When it is necessary to switch from the single-pass working mode back to the double-pass working mode, the drive motor 47 rotates in reverse, driving the sliding plate 43 to move to the left along the slide rail 42 to reset; during the reset process of the sliding plate 43, the right rack 46 disengages from the right gear 411, the right valve stem resets and rotates, realizing the opening of the right valve. At the same time, the first transmission wheel 49, the transmission belt 413, and the second transmission wheel 412 are linked to drive the first valve 8 stem to rotate and close the first valve 8; the left rack 45 remains disengaged from the left gear 410, the left valve remains open, and finally the double-pass working mode is restored with the first valve 8 closed and both second valves 7 open.

[0042] When it is necessary to switch to a single-pass working mode and open the right valve and close the left valve, the drive motor 47 directly drives the sliding plate 43 to move to the left along the slide rail 42. During the leftward movement of the sliding plate 43, the left rack 45 meshes with the left gear 410, driving the left gear 410 to rotate, which in turn drives the left valve stem to rotate and close the left valve. The right rack 46 remains disengaged from the right gear 411, and the right valve remains open. At the same time, the first transmission wheel 49 drives the first valve 8 stem to rotate and open the first valve 8 through the transmission belt 413 and the second transmission wheel 412, realizing the single-pass working state of the first valve 8 open, the right valve open, and the left valve closed.

[0043] In addition, during the operation of the mechanical control device, the drive motor 47 drives the sliding plate 43 to slide back and forth along the slide rail 42, thereby driving the rack and pinion to mesh and realize the valve opening and closing switching; the limit blocks 81 at both ends of the sliding plate 43 slide synchronously with the sliding plate 43. When the sliding plate 43 slides to the limit position of the single-pass working mode, the limit block 81 on the corresponding side will form a physical contact with the end of the slide rail 42, forcibly restricting the sliding plate 43 from continuing to slide, and preventing the sliding plate 43 from exceeding the limit of the sliding stroke.

[0044] See Figures 1-3 As shown, air inlet pipes 51 are connected to both air inlets 2, and a three-way valve 61 is connected between the two air inlet pipes 51. The other port of the three-way valve 61 is connected to an exhaust gas inlet pipe 62. A pretreatment filter box 71 is connected in series on the exhaust gas inlet pipe 62. The pretreatment filter box 71 contains a primary filter, a demisting layer, and an activated carbon adsorption layer arranged in sequence.

[0045] The industrial waste gas to be treated first flows into the pretreatment filter box 71, and then flows through the primary filter, the demister layer, and the activated carbon adsorption layer in sequence to complete three-stage pretreatment: the waste gas first passes through the primary filter, which intercepts and removes large-particle pollutants such as dust, particulate matter, and flocculent impurities carried in the waste gas, preventing impurities from clogging the internal packing and pipelines of the subsequent biological deodorization box 1; then the waste gas enters the demister layer to remove liquid water mist and condensate droplets from the waste gas, preventing excessive moisture from affecting the living environment and degradation activity of the microbial community in the biological deodorization box 1; finally, the waste gas passes through the activated carbon adsorption layer, which preliminarily adsorbs and removes some large-molecule malodorous substances, high-concentration VOCs, and trace amounts of toxic impurities in the waste gas, reducing the load on the downstream biodegradation and improving the microbial degradation efficiency and community stability.

[0046] The exhaust gas purified by the pretreatment filter box 71 continues to be transported to the three-way valve 61 along the exhaust gas inlet pipe 62. The valve core of the three-way valve 61 is adjusted to achieve directional diversion of the exhaust gas, which is matched with the air supply in the dual-way and single-way working modes of the main unit.

[0047] Dual-pass working mode air supply: When the three-way valve 61 is adjusted to the dual-pass diversion state, the pre-treated exhaust gas is simultaneously diverted to two air inlet pipes 51 through the three-way valve 61, and then sent into the corresponding biological deodorization box 1 through the two air inlets 2 respectively, realizing synchronous air intake of the two boxes, which is suitable for the treatment of large volume exhaust gas.

[0048] Single-pass working mode air supply: The three-way valve 61 is adjusted to the single-sided conduction state. The pre-treated exhaust gas is only delivered to a single air inlet pipe 51 through the three-way valve 61, and sent into the single-sided biological deodorization box 1 through the corresponding air inlet 2. The other air inlet pipe 51 and air inlet 2 are in the air-cut state, which is suitable for the working condition of single box degradation and other box shutdown maintenance, and realizes precise linkage between air inlet and back-end valves and exhaust mode.

[0049] The entire air intake system, through pretreatment purification and flow diversion by three-way valve 61, ensures the cleanliness of the exhaust gas entering the biological deodorization box 1, and achieves directional airflow distribution. It seamlessly connects with the dual-pass and single-pass working modes of the main unit, improving the operational stability and treatment effect of the entire degradation device.

[0050] In this invention, the biological deodorization box 1 is a sealed box structure. The inside of the box is lined with a microbial degradation packing layer, which is colonized with functional microbial flora for decomposing pollutants in exhaust gases. An air inlet 2 and an air outlet 3 are respectively opened at the front and rear ends of the box. Exhaust gas enters the box through the air inlet 2, where it fully contacts and reacts with the microorganisms on the packing layer. Odor substances, VOCs, and other pollutants are metabolized and decomposed by the microorganisms, and the purified gas is discharged through the air outlet 3. This is the core cavity for realizing the microbial degradation of exhaust gases.

[0051] Furthermore, each of the biological deodorization boxes 1 has an observation window 91 on its side wall, and each of the two biological deodorization boxes 1 has an inspection door 92 on its top wall.

[0052] The observation window 91, made of transparent and airtight material, is fixedly embedded in the side wall of the biological deodorization chamber 1. It allows for real-time observation of the internal packing layer status, microbial growth, waste gas flow, and the presence of abnormalities such as liquid accumulation, blockage, or packing caking without opening the chamber. This facilitates real-time monitoring of the degradation process, timely detection of potential faults, and non-invasive online monitoring. The maintenance door 92 is airtightly installed on the top wall of the biological deodorization chamber 1 and is normally closed to ensure airtightness and prevent waste gas leakage. When it is necessary to replace the packing, repair components, or clean impurities inside the biological deodorization chamber 1, the maintenance door 92 can be opened to quickly access the interior for maintenance without disassembling the main body of the chamber. This significantly shortens maintenance time, improves the efficiency of equipment operation and maintenance, and facilitates regular maintenance of the internal degradation structure, ensuring long-term stability of microbial degradation efficiency.

[0053] A waste gas concentration detection probe is installed on the exhaust pipe 23. The clean waste gas, which has been degraded by the biological deodorization box 1 and sucked and transported by the centrifugal fan 21, flows into the interior of the exhaust pipe 23 and toward the chimney 24. The waste gas concentration detection probe collects airflow samples in the exhaust pipe 23 in real time and performs online detection on the concentration of odorous substances, VOCs and other pollutants in the waste gas, and provides real-time feedback on the concentration data of the purified waste gas.

[0054] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-channel diversion type industrial waste gas microbial degradation device, characterized in that: The device includes two biological deodorizing boxes (1) spaced apart on the left and right. The front and rear ends of the two biological deodorizing boxes (1) are respectively provided with air inlets (2) and air outlets (3). An air outlet pipe (4) is connected to the air outlet (3). A three-way pipe (5) is provided on each of the two air outlet pipes (4). A connecting pipe (6) is connected between the two three-way pipes (5). A first valve (8) is provided on the connecting pipe (6). A second valve (7) is provided on each of the two air outlet pipes (4). The second valve (7) is located between the three-way pipe (5) and the air outlet (3). A mechanical control device is also provided between the two air outlet pipes (4). The mechanical control device is used to simultaneously control the first valve (8) and the two second valves (7) to work. The device includes a double-pass working mode and a single-pass working mode. In the dual-pass working mode, the first valve (8) is closed and both second valves (7) are open; In single-pass operation mode, the first valve (8) is open, one of the two second valves (7) is open, and the other is closed.

2. The multi-channel diversion type industrial waste gas microbial degradation device according to claim 1, characterized in that: Centrifugal fans (21) are connected to the ends of both air outlet pipes (4), and the exhaust ports of both centrifugal fans (21) are connected to chimneys (24) through exhaust pipes (23).

3. The multi-channel diversion type industrial waste gas microbial degradation device according to claim 1, characterized in that: The first valve (8) and the two second valves (7) are both plug valves.

4. A multi-channel diversion type industrial waste gas microbial degradation device according to claim 1 or 3, characterized in that: Of the two second valves (7), the left one is the left valve and the right one is the right valve. The mechanical control device includes a support frame (41) located between the two air outlet pipes (4). A slide rail (42) is provided at the upper end of the support frame (41). A sliding plate (43) slides left and right on the slide rail (42). A middle rack (44), a left rack (45), and a right rack (46) are respectively provided on the sliding plate (43). A drive motor (47) is installed on the support frame (41). A drive gear (48) and a first transmission wheel (49) are respectively provided on the output shaft. The drive gear (48) meshes with the intermediate rack (44). A left gear (410) meshing with the left rack (45) is provided on the valve stem of the left valve. A right gear (411) meshing with the right rack (46) is provided on the valve stem of the right valve. A second transmission wheel (412) is provided on the valve stem of the first valve (8). A transmission belt (413) is connected between the first transmission wheel (49) and the second transmission wheel (412).

5. The multi-channel diversion type industrial waste gas microbial degradation device according to claim 1, characterized in that: An air inlet pipe (51) is connected to both of the aforementioned air inlets (2).

6. The multi-channel diversion type industrial waste gas microbial degradation device according to claim 5, characterized in that: A three-way valve (61) is connected between the two air inlet pipes (51), and the other port of the three-way valve (61) is connected to an exhaust gas inlet pipe (62).

7. The multi-channel diversion type industrial waste gas microbial degradation device according to claim 6, characterized in that: A pretreatment filter box (71) is connected in series on the exhaust gas inlet pipe (62). Inside the pretreatment filter box (71) are arranged a primary filter, a demisting layer, and an activated carbon adsorption layer in sequence.

8. The multi-channel diversion type industrial waste gas microbial degradation device according to claim 4, characterized in that: Limiting blocks (81) are provided at both the left and right ends of the sliding plate (43).

9. The multi-channel diversion type industrial waste gas microbial degradation device according to claim 1, characterized in that: Both biological deodorization boxes (1) are provided with observation windows (91) on their side walls and inspection doors (92) on their top walls.

10. A multi-channel diversion type industrial waste gas microbial degradation device according to claim 2, characterized in that: An exhaust gas concentration detection probe is installed on the exhaust pipe (23).

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