An exhaust gas purification device for a fermenter

Abstract

The present invention discloses an exhaust gas purification device for a fermentation tank, which relates to the technical field of exhaust gas purification equipment and solves the technical problem that the absorption liquid cannot be fully utilized during the purification treatment of the fermentation tank exhaust gas, easily causing waste of the absorption liquid; it includes a purification cylinder and a liquid storage cylinder, and a treatment mechanism for absorbing exhaust gas is arranged between the purification cylinder and the liquid storage cylinder; the treatment mechanism includes a rotating plate, a treatment cylinder, a gas guiding disc, an air inlet mechanism, a liquid supplement driving mechanism, a liquid discharge mechanism and a gas guiding and exhausting mechanism. A plurality of treatment cylinders are annularly and equidistantly distributed in the purification cylinder, and a plurality of treatment cylinders are connected through the gas guiding and exhausting mechanism. The rotating plate and the gas guiding disc are installed in the purification cylinder, and the rotating plate is sleeved with the treatment cylinder. The treatment cylinder is connected with the liquid storage cylinder through the liquid supplement driving mechanism. The present invention not only facilitates the multi-stage purification treatment of the fermentation tank exhaust gas and improves the treatment effect, but also enables the absorption liquid used for exhaust gas purification to be fully utilized, effectively reducing the waste of resources.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas purification equipment, and in particular to a tail gas purification equipment for a fermentation tank. Background Art

[0002] With the rapid progress of modern biotechnology, drugs produced by biofermentation have been widely used in the medical field and have made important contributions to improving public health. However, the fermentation process in the biopharmaceutical process requires a large amount of air to participate in the reaction, which is followed by the emission of untreated waste gas into the environment. These waste gases contain metabolic byproducts produced during the fermentation process, and sometimes emit a pungent odor. In addition, drug ingredients or intermediates in the production process may also accumulate in the air, posing a potential threat to human health and the natural environment. In view of this, ensuring that the waste gas generated in the biofermentation process is properly purified and discharged after meeting environmental protection standards has become an urgent problem to be solved. Through effective waste gas management measures, not only can the adverse effects on human health be reduced, but also the pollution to the environment can be reduced, thereby achieving the sustainable development of the biopharmaceutical industry.

[0003] Spraying the absorption liquid to make it fully contact with the exhaust gas is an effective means of purifying the exhaust gas. In order to avoid the waste of absorption liquid, the exhaust gas is usually treated by circulating spraying. However, as the spray liquid is continuously absorbed and treated, its concentration will gradually decrease, thus affecting the exhaust gas treatment effect. When the concentration of the absorption liquid drops to a certain level, it needs to be discharged and supplemented with new high-concentration absorption liquid, but this process will cause a large amount of waste of low-concentration absorption liquid, which not only consumes precious resources, but also increases the burden of waste liquid treatment. Summary of the invention

[0004] The purpose of the present invention is to provide an exhaust gas purification device for a fermentation tank, which solves the problem that the absorption liquid cannot be fully utilized during the purification of the exhaust gas from the fermentation tank, which easily causes waste of the absorption liquid.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An exhaust gas purification device for a fermentation tank comprises a purification cylinder and a liquid storage cylinder, wherein a processing mechanism for absorbing exhaust gas is arranged between the purification cylinder and the liquid storage cylinder;

[0007] The processing mechanism includes a rotating plate, a processing cylinder, an air guide disc, an air inlet mechanism, a liquid supplement driving mechanism, a liquid discharge mechanism, and an air guide and exhaust mechanism. A plurality of the processing cylinders are annularly and equidistantly distributed in the purification cylinder, and the plurality of processing cylinders are connected to each other through the air guide and exhaust mechanism. The rotating plate and the air guide disc are installed in the purification cylinder, and the rotating plate is sleeved with the processing cylinder. The processing cylinder is connected to the liquid storage cylinder through the liquid supplement driving mechanism. The liquid supplement driving mechanism is used to supplement the absorption liquid into the corresponding processing cylinder and control the rotation of the rotating plate. The liquid discharge mechanism is arranged between the processing cylinder and the air guide disc, and the liquid discharge mechanism is used to discharge the ineffective absorption liquid in the processing cylinder. The air inlet mechanism is installed on the air guide disc, and the air inlet mechanism is used to introduce the tail gas into the corresponding processing cylinder.

[0008] As a further scheme of the present invention: The liquid storage cylinder is located above the purification cylinder, and the liquid storage cylinder and the purification cylinder are connected through a plurality of circumferentially distributed brackets. An exhaust pipe is installed at the top of the purification cylinder. A controller is installed on the outer side wall of the purification cylinder, and a liquid outlet pipe penetrates through the side wall of the purification cylinder.

[0009] As a further scheme of the present invention: The air inlet mechanism includes an air inlet pipe, an air diffuser pipe, an annular cover, and an arc-shaped seal strip with a support rod. One end of the air inlet pipe is communicated with the bottom of the air guide disc, and the other end penetrates through the purification cylinder and extends outwards. An annular opening is arranged at the top of the air guide disc. The annular cover is rotatably connected to the annular opening. One end of the air diffuser pipe extends into the inner cavity of its processing cylinder. The other end of the air diffuser pipe sequentially penetrates through the rotating plate and the annular cover, and its end face is flush with the top of the arc-shaped seal strip. The bottom of the arc-shaped seal strip is connected to the inner lower surface of the air guide disc through a support rod.

[0010] As a further scheme of the present invention: The air guide and exhaust mechanism includes a communicating pipe, a one-way valve, and an exhaust valve. A communicating pipe is arranged between the side walls of adjacent two processing cylinders near the top. One end of the communicating pipe is communicated with the inner cavity of one of the processing cylinders, and the other end of the communicating pipe is communicated with the air diffuser pipe in the other processing cylinder. The one-way valve is installed on the communicating pipe. The exhaust valve is electrically connected to the controller, and the exhaust valve is arranged at the top of the processing cylinder.

[0011] As a further scheme of the present invention: The liquid supplement driving mechanism includes a liquid distribution disc, a branch pipe, an electric control valve, a rotating pipe, a driving bevel gear, a driven bevel gear, and a motor. The liquid distribution disc is arranged at the center of the top of the rotating plate. The controller is electrically connected to the motor and the electric control valve respectively. The electric control valve is arranged on the branch pipe. The processing cylinder is communicated with the liquid distribution disc through the branch pipe. The bottom end of the rotating pipe is communicated with the center of the top of the liquid distribution disc. The top end of the rotating pipe penetrates through the top of the purification cylinder and is rotatably connected to the bottom of the liquid storage cylinder. The motor is installed on the top of the purification cylinder. The driving bevel gear is connected to the output shaft of the motor. The driven bevel gear is sleeved on the rotating pipe, and the driven bevel gear meshes with the driving bevel gear.

[0012] As a further solution of the present invention: the liquid discharge mechanism includes liquid discharge holes, a plugging member, an elastic lifting member and an extrusion member. A plurality of the liquid discharge holes are arranged on the barrel wall of the treatment barrel near the bottom end. The plugging member is arranged inside the treatment barrel to plug the liquid discharge holes. The elastic lifting member is connected to the plugging member. The extrusion member is arranged on the top of the air guide disc, and the extrusion member is used to lift the corresponding plugging member in the treatment barrel through the elastic lifting member when the rotating plate rotates.

[0013] As a further solution of the present invention: the plugging member includes a sealing ring and a movable ring. The bottom of the movable ring is attached to the inner lower surface of the treatment barrel. The sealing ring is sleeved on the outer ring of the movable ring, and the sealing ring corresponds to the position of the liquid discharge hole.

[0014] As a further solution of the present invention: the elastic lifting member includes a top rod, a movable plate, a sliding rod and a spring. A plurality of the sliding rods are circumferentially connected to the top of the movable plate, and the top ends of the sliding rods slide through the bottom of the treatment barrel and are connected to the movable ring. The spring is sleeved on the sliding rod, and the spring is installed between the treatment barrel and the movable plate. The top rod is installed at the center of the bottom of the movable plate.

[0015] As a further solution of the present invention: the extrusion member includes an arc-shaped groove, an L-shaped rod, an extrusion plate and an arc-shaped plate. The arc-shaped groove is connected to the top edge of the air guide disc through the L-shaped rod. The arc-shaped plate and the extrusion plate are both arranged in the arc-shaped groove, and one end of the extrusion plate is connected to the arc-shaped plate. The height of the extrusion plate gradually decreases from the end far away from the arc-shaped plate. The arc-shaped groove is used to drive the corresponding top rod to move along its track when the rotating plate rotates.

[0016] As a further solution of the present invention: a liquid level sensor is installed on the inner upper surface of the treatment barrel, and a concentration sensor is installed on the inner barrel wall of the treatment barrel near the lower part. The concentration sensor is used to detect whether the absorption liquid in the treatment barrel fails. Both the liquid level sensor and the concentration sensor are electrically connected to the controller.

[0017] The beneficial effects of the present invention:

[0018] 1. In the present invention, through the air intake mechanism, it is not only convenient to inject the tail gas to be purified into the air guide disc, but also convenient to introduce the tail gas in the air guide disc into one of the corresponding treatment barrels. By using the air guide and exhaust mechanism, it is not only convenient for the tail gas to flow through a plurality of treatment barrels in turn to achieve full treatment of the tail gas, but also convenient to discharge the fully purified gas. After the absorption liquid in the treatment barrel that first contacts the tail gas is completely consumed, controlling the rotation of the rotating plate is convenient to switch the positions of each treatment barrel, so that the tail gas treatment will not be interrupted, which is beneficial to ensuring the treatment efficiency of the tail gas.

[0019] 2. In the present invention, when the rotating plate rotates to switch the position of the processing cylinder through the liquid discharging mechanism, the absorbed liquid that has been fully consumed in the processing cylinder can not only be automatically discharged outside, but also the processing cylinder can be restored to a closed state after being emptied. The liquid supplement driving mechanism is used to not only conveniently control the rotation of the rotating plate, but also conveniently automatically supplement new absorbed liquid into the processing cylinder after liquid discharge. This not only facilitates the full utilization of the absorbed liquid and avoids waste of resources, but also can effectively ensure that the tail gas can be subjected to multi-stage purification treatment and ensure the treatment effect of the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of an exhaust gas purification device for a fermentation tank according to the present invention;

[0022] Figure 2 is a perspective view of an exhaust gas purification device for a fermentation tank according to the present invention after being cut open;

[0023] Figure 3 is a perspective view of an exhaust gas purification device for a fermentation tank according to the present invention after removing the liquid storage cylinder;

[0024] Figure 4 is a partial perspective view of a processing mechanism in an exhaust gas purification device for a fermentation tank according to the present invention;

[0025] Figure 5 is a perspective view of the connecting part between the aeration pipe and the arc-shaped seal in an exhaust gas purification device for a fermentation tank according to the present invention;

[0026] Figure 6 is a schematic top view of the connecting part between multiple processing cylinders in an exhaust gas purification device for a fermentation tank according to the present invention;

[0027] Figure 7 is a perspective view of a liquid supplement driving mechanism in an exhaust gas purification device for a fermentation tank according to the present invention;

[0028] Figure 8 is a perspective view of a processing cylinder and an aeration pipe in an exhaust gas purification device for a fermentation tank after being cut open;

[0029] Figure 9 is a perspective view of the connecting part between an elastic lifting member and a plugging member in an exhaust gas purification device for a fermentation tank according to the present invention;

[0030] Figure 10 is a perspective view of an extrusion member in an exhaust gas purification device for a fermentation tank according to the present invention.

[0031] In the figure: 1, purification cylinder; 2, liquid storage cylinder; 3, treatment mechanism; 31, rotating plate; 32, treatment cylinder; 33, air guide disc; 34, air inlet mechanism; 341, air inlet pipe; 342, aeration pipe; 343, annular cover; 344, support rod; 345, arc seal; 35, liquid supplement driving mechanism; 351, liquid distribution plate; 352, branch pipe; 353, electric control valve; 354, rotating pipe; 355, driving bevel gear; 356, driven bevel gear; 357, motor; 36, liquid discharge mechanism; 361, liquid discharge hole; 362, plugging member; 3621, sealing ring; 3622, movable ring; 363, elastic lifting member; 3631, ejector rod; 3632, movable plate; 3633, sliding rod; 3634, spring; 364, extrusion member; 3641, arc groove; 3642, L-shaped rod; 3643, extrusion plate; 3644, arc plate; 37, air guide and exhaust mechanism; 371, connecting pipe; 372, one-way valve; 373, exhaust valve; 4, support; 5, exhaust pipe; 6, controller; 7, liquid outlet pipe; 8, liquid level sensor; 9, concentration sensor. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] As Figures 1 - 10 shown, the present invention is a tail gas purification device for a fermentation tank, including a purification cylinder 1 and a liquid storage cylinder 2. A treatment mechanism 3 for absorbing tail gas is arranged between the purification cylinder 1 and the liquid storage cylinder 2; the treatment mechanism 3 includes a rotating plate 31, a treatment cylinder 32, an air guide disc 33, an air inlet mechanism 34, a liquid supplement driving mechanism 35, a liquid discharge mechanism 36 and an air guide and exhaust mechanism 37. A plurality of treatment cylinders 32 are annularly and equidistantly distributed in the purification cylinder 1, and a plurality of treatment cylinders 32 are connected through the air guide and exhaust mechanism 37. The rotating plate 31 and the air guide disc 33 are installed in the purification cylinder 1, and the rotating plate 31 is sleeved with the treatment cylinder 32. The treatment cylinder 32 is connected to the liquid storage cylinder 2 through the liquid supplement driving mechanism 35. The liquid supplement driving mechanism 35 is used to supplement the absorption liquid into the corresponding treatment cylinder 32 and control the rotation of the rotating plate 31. The liquid discharge mechanism 36 is arranged between the treatment cylinder 32 and the air guide disc 33, and the liquid discharge mechanism 36 is used to discharge the ineffective absorption liquid in the treatment cylinder 32. The air inlet mechanism 34 is installed on the air guide disc 33, and the air inlet mechanism 34 is used to introduce the tail gas into the corresponding treatment cylinder 32.

[0034] It should be noted that during use, the tail gas of the fermentation tank is introduced into one of the corresponding treatment cylinders 32 through the air inlet mechanism 34, so that the tail gas first contacts and reacts with the absorption liquid in the treatment cylinder 32. The unpurified tail gas accumulates in the treatment cylinder 32 and enters the next treatment cylinder 32 through the air guide and exhaust mechanism 37 for continuous purification. In this way, the tail gas can be fully treated by using the absorption liquid in multiple treatment cylinders 32. As the tail gas is continuously injected, the concentration of the absorption liquid in the treatment cylinder 32 that first contacts the tail gas will gradually decrease until it fails. At this time, the liquid supplement driving mechanism 35 is used to drive the rotating plate 31 to rotate by a set angle, and the liquid discharge mechanism 36 is used to conveniently discharge the ineffective absorption liquid in the corresponding treatment cylinder 32;

[0035] After all the absorption liquid is drained, control the rotating plate 31 to continue rotating by an appropriate angle so that the treatment cylinder 32 that initially contacted the tail gas moves to the position of its adjacent treatment cylinder 32, realizing the position exchange of each treatment cylinder 32. At this time, the liquid supplement driving mechanism 35 can also automatically supplement the new absorption liquid in the liquid storage cylinder 2 into the corresponding treatment cylinder 32, and then repeat the above operation, which can not only perform multi-stage purification treatment on the tail gas, but also make the absorption liquid fully utilized, avoiding waste of resources.

[0036] As Figure 2 and Figures 4 - 5 As shown in [figures], the air inlet mechanism 34 includes an air inlet pipe 341, an air diffuser pipe 342, an annular cover 343, and an arc-shaped seal strip 345 with a support rod 344. One end of the air inlet pipe 341 is communicated with the bottom of the air guide disc 33, and the other end penetrates through the purification cylinder 1 and extends outward. An annular opening is provided at the top of the air guide disc 33, and the annular cover 343 is rotatably connected to the annular opening. One end of the air diffuser pipe 342 extends into the inner cavity of the treatment cylinder 32, the other end of the air diffuser pipe 342 sequentially penetrates through the rotating plate 31 and the annular cover 343, and its end face is flush with the top of the arc-shaped seal strip 345. The bottom of the arc-shaped seal strip 345 is connected to the inner lower surface of the air guide disc 33 through the support rod 344.

[0037] It should be noted that the annular cover 343 is rotatably connected to the annular opening through a sealing bearing, which can ensure the sealing performance of the rotating connection. In this embodiment, the number of treatment cylinders 32 is specifically 6. The top of the arc-shaped seal strip 345 fits with the end faces of 5 air diffuser pipes 342, and only the end face of one air diffuser pipe 342 does not fit with the arc-shaped seal strip 345. That is to say, when the tail gas enters the air guide disc 33 through the air inlet pipe 341, the tail gas can only enter the inner cavity of the treatment cylinder 32 through one of the unobstructed air diffuser pipes 342.

[0038] As Figure 2 、 Figure 4 and Figure 6As shown in the figure, the air inlet and exhaust mechanism 37 includes a communication pipe 371, a one-way valve 372, and an exhaust valve 373. A communication pipe 371 is provided between the side walls near the top of two adjacent treatment cylinders 32. One end of the communication pipe 371 communicates with the inner cavity of one of the treatment cylinders 32, and the other end of the communication pipe 371 communicates with the aeration pipe 342 in the other treatment cylinder 32. The one-way valve 372 is installed on the communication pipe 371. The exhaust valve 373 is electrically connected to the controller 6 and is provided at the top of the treatment cylinder 32.

[0039] It should be noted that the one-way valve 372 enables the tail gas to flow unidirectionally only through the communication pipe 371. Specifically, in Figure 6 where the tail gas rotates counterclockwise, the tail gas that first enters the treatment cylinder 32 cannot be completely purified by the absorption liquid. The unpurified tail gas enters the aeration pipe 342 in the corresponding treatment cylinder 32 through the communication pipe 371, and then the tail gas continues to contact and react with the absorption liquid in this treatment cylinder 32. In this way, the tail gas can be purified through multiple stages to ensure the treatment effect. During the purification process, only the exhaust valve 373 on the treatment cylinder 32 at the end of the purification is in the open state, and this exhaust valve 373 is used to conveniently discharge the purified tail gas.

[0040] As Figure 1 and Figure 8 shown, a liquid level sensor 8 is installed on the inner upper surface of the treatment cylinder 32, and a concentration sensor 9 is installed on the inner cylinder wall near the lower part of the treatment cylinder 32. The concentration sensor 9 is used to detect whether the absorption liquid in the treatment cylinder 32 has failed. Both the liquid level sensor 8 and the concentration sensor 9 are electrically connected to the controller 6.

[0041] It should be noted that as the tail gas is continuously injected, the absorption liquid in the treatment cylinder 32 will also be gradually consumed, especially the absorption liquid that first contacts the tail gas. The concentration sensor 9 is used to conveniently detect whether the absorption liquid in the treatment cylinder 32 that first contacts the tail gas has been completely consumed and failed. The liquid level sensor 8 is used to conveniently detect the liquid level of the absorption liquid in the treatment cylinder 32 to avoid excessive replenishment of the absorption liquid in the subsequent treatment cylinder 32.

[0042] As Figure 4 , Figure 8 and Figure 10 shown, the liquid discharge mechanism 36 includes a liquid discharge hole 361, a plugging member 362, an elastic lifting member 363, and a pressing member 364. A plurality of liquid discharge holes 361 are provided on the cylinder wall near the bottom of the treatment cylinder 32. The plugging member 362 is arranged in the treatment cylinder 32 to plug the liquid discharge holes 361. The elastic lifting member 363 is connected to the plugging member 362. The pressing member 364 is arranged on the top of the air guide disc 33, and the pressing member 364 is used to lift the plugging member 362 in the corresponding treatment cylinder 32 through the elastic lifting member 363 when the rotating plate 31 rotates.

[0043] It should be noted that when the absorption liquid inside the treatment cylinder 32 that initially comes into contact with the tail gas fails, the rotating plate 31 is controlled to rotate clockwise by a set angle. During the rotation process, the pressing member 364 exerts an upward thrust on the elastic lifting member 363, so that the plugging member 362 slides upward, and the liquid discharge hole 361 can be opened for automatic liquid discharge. After the liquid discharge is completed, the rotating plate 31 is controlled to continue rotating until the treatment cylinder 32 that initially comes into contact with the tail gas moves to the position of its adjacent treatment cylinder 32. At this time, the elastic lifting member 363 drives the plugging member 362 to reset, and the treatment cylinder 32 can be restored to a closed state again.

[0044] As Figures 8 - 9 shown, the plugging member 362 includes a sealing ring 3621 and a movable ring 3622. The bottom of the movable ring 3622 is attached to the inner lower surface of the treatment cylinder 32. The sealing ring 3621 is sleeved on the outer circle of the movable ring 3622, and the sealing ring 3621 corresponds to the position of the liquid discharge hole 361.

[0045] It should be noted that when the movable ring 3622 is attached to the inner lower surface of the treatment cylinder 32, at this time, the sealing ring 3621 can cover and block the liquid discharge hole 361 to achieve sealing.

[0046] As Figures 8 - 9 shown, the elastic lifting member 363 includes a top rod 3631, a movable plate 3632, a slide rod 3633 and a spring 3634. A plurality of slide rods 3633 are circumferentially connected to the top of the movable plate 3632, and the top ends of the slide rods 3633 slide through the bottom of the treatment cylinder 32 and are connected to the movable ring 3622. The spring 3634 is sleeved on the slide rod 3633, and the spring 3634 is installed between the treatment cylinder 32 and the movable plate 3632. The top rod 3631 is installed at the center of the bottom of the movable plate 3632.

[0047] It should be noted that in the initial state, the spring 3634 is in a partially compressed and energy-storing state. In this state, the movable ring 3622 can be pressed against the inner lower surface of the treatment cylinder 32, which is beneficial to ensuring the stability of the position of the plugging member 362.

[0048] As Figure 4 、 Figure 9 and Figure 10 shown, the pressing member 364 includes an arc-shaped groove 3641, an L-shaped rod 3642, a pressing plate 3643 and an arc-shaped plate 3644. The arc-shaped groove 3641 is connected to the top edge of the air guide disc 33 through the L-shaped rod 3642. The arc-shaped plate 3644 and the pressing plate 3643 are both arranged in the arc-shaped groove 3641, and one end of the pressing plate 3643 is connected to the arc-shaped plate 3644. The height of the pressing plate 3643 gradually decreases from the end far away from the arc-shaped plate 3644. The arc-shaped groove 3641 is used to drive the corresponding top rod 3631 to move along its track when the rotating plate 31 rotates.

[0049] It should be noted that when the rotating plate 31 drives the push rod 3631 to contact the extrusion plate 3643, as the rotating plate 31 continues to rotate, the extrusion plate 3643 will exert an upward thrust on the push rod 3631, so that the push rod 3631 will adaptively rise, and when the push rod 3631 moves to the top of the arc plate 3644, the push rod 3631 will maintain the maximum rising state until the push rod 3631 is separated from the arc plate 3644 and then it will drop and reset.

[0050] like Figures 1 - 3 As shown, the liquid storage cylinder 2 is located above the purification cylinder 1, and the liquid storage cylinder 2 and the purification cylinder 1 are connected by a plurality of circumferentially distributed brackets 4, and an exhaust pipe 5 is installed on the top of the purification cylinder 1, a controller 6 is installed on the outer wall of the purification cylinder 1, and a liquid outlet pipe 7 is provided through the side wall of the purification cylinder 1.

[0051] It should be noted that the bottom of the liquid outlet pipe 7 is flush with the top of the air guide plate 33. The liquid outlet pipe 7 is used to conveniently discharge the spent absorption liquid discharged from the treatment cylinder 32 from the purification cylinder 1, and the exhaust pipe 5 is convenient for discharging the purified gas inside the purification cylinder 1.

[0052] like Figure 2 and Figures 7 - 8 As shown, the liquid replenishment drive mechanism 35 includes a liquid distribution tray 351, a branch pipe 352, an electric control valve 353, a rotating pipe 354, an active bevel gear 355, a driven bevel gear 356 and a motor 357. The liquid distribution tray 351 is arranged at the top center of the rotating plate 31, the controller 6 is electrically connected to the motor 357 and the electric control valve 353 respectively, the electric control valve 353 is arranged on the branch pipe 352, the treatment cylinder 32 is connected to the liquid distribution tray 351 through the branch pipe 352, the bottom end of the rotating pipe 354 is connected to the top center of the liquid distribution tray 351, the top end of the rotating pipe 354 passes through the top of the purification cylinder 1 and is rotatably connected to the bottom of the liquid storage cylinder 2, the motor 357 is installed at the top of the purification cylinder 1, the active bevel gear 355 is connected to the output shaft of the motor 357, the driven bevel gear 356 is sleeved on the rotating pipe 354, and the driven bevel gear 356 is meshed with the active bevel gear 355.

[0053] It should be noted that the controller 6 can control the rotation angle of the motor 357 as needed. This is a prior art and will not be described in detail here. The rotating tube 354 drives the liquid distribution tray 351 to rotate, and the rotating plate 31 can be rotated in conjunction with the branch pipe 352. The absorption liquid in the liquid storage cylinder 2 enters the liquid distribution tray 351 through the rotating tube 354. The absorption liquid can be added to the corresponding treatment cylinder 32 by simply opening the electric control valve 353 on the corresponding branch pipe 352.

[0054] Since the number of treatment cylinders 32 in this embodiment is set to 6, if the treatment cylinder 32 that initially contacts the exhaust gas is to be moved to the position of its adjacent treatment cylinder 32, it needs to be rotated 60 degrees. In order to ensure that the treatment cylinder 32 can drain the failed absorption liquid, the 60-degree rotation stroke is divided into two times. The first rotation requires that the drainage hole 361 of the treatment cylinder 32 is in an unobstructed state, and the liquid level sensor 8 is used to conveniently determine whether the drainage is completed, so that the second rotation can be performed in time after the drainage is completed, so that the treatment cylinder 32 can be restored to a closed state. Similarly, the liquid level sensor 8 is used to conveniently determine the specific replenishment amount of the absorption liquid, and when the liquid level reaches the set threshold, the corresponding electric control valve 353 is controlled to be closed.

[0055] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An exhaust gas purification device for a fermentation tank, comprising a purification cylinder (1) and a liquid storage cylinder (2), characterized in that: A processing mechanism (3) for absorbing tail gas is provided between the purification cylinder (1) and the liquid storage cylinder (2); The processing mechanism (3) comprises a rotating plate (31), a processing cylinder (32), an air guide plate (33), an air intake mechanism (34), a liquid replenishing drive mechanism (35), a liquid discharge mechanism (36) and an air guide mechanism (37); a plurality of the processing cylinders (32) are annularly and equidistantly distributed in the purification cylinder (1); and the plurality of processing cylinders (32) are connected via the air guide mechanism (37); the rotating plate (31) and the air guide plate (33) are installed in the purification cylinder (1); the rotating plate (31) and the processing cylinder (32) are sleeved; and the processing cylinder (3 2) is connected to the liquid storage cylinder (2) via a liquid replenishment drive mechanism (35), the liquid replenishment drive mechanism (35) is used to replenish the absorption liquid into the corresponding treatment cylinder (32) and control the rotation of the rotating plate (31), the liquid discharge mechanism (36) is arranged between the treatment cylinder (32) and the air guide plate (33), and the liquid discharge mechanism (36) is used to discharge the ineffective absorption liquid in the treatment cylinder (32), and the air intake mechanism (34) is installed on the air guide plate (33), and the air intake mechanism (34) is used to guide the tail gas into the corresponding treatment cylinder (32); The air intake mechanism (34) comprises an air intake pipe (341), an aeration pipe (342), an annular cover (343), and an arc-shaped seal strip (345) with a support rod (344); one end of the air intake pipe (341) is in communication with the bottom of the air guide plate (33), and the other end thereof penetrates through the purification cylinder (1) and extends outward; an annular opening is arranged at the top of the air guide plate (33), and the annular cover (343) is rotatably connected to the annular opening; one end of the aeration pipe (342) extends to the inner cavity of the treatment cylinder (32); the other end of the aeration pipe (342) penetrates through the rotating plate (31) and the annular cover (343) in sequence, and its end surface is flush with the top of the arc-shaped seal strip (345); exhaust gas can only enter the inner cavity of the treatment cylinder (32) via one of the aeration pipes (342) that is not blocked; the bottom of the arc-shaped seal strip (345) is connected to the inner lower surface of the air guide plate (33) via the support rod (344); The exhaust and inlet mechanism (37) comprises a connecting pipe (371), a one-way valve (372) and an exhaust valve (373); a connecting pipe (371) is provided between the side walls of two adjacent treatment barrels (32) close to the top ends; one end of the connecting pipe (371) is connected to the inner cavity of one of the treatment barrels (32); the other end of the connecting pipe (371) is connected to the aeration pipe (342) in the other treatment barrel (32); the one-way valve (372) is installed on the connecting pipe (371); the exhaust valve (373) is electrically connected to the controller (6), and the exhaust valve (373) is arranged at the top of the treatment barrel (32).

2. The tail gas purification device for a fermentation tank according to claim 1, characterized in that: The liquid storage cylinder (2) is located above the purification cylinder (1), and the liquid storage cylinder (2) and the purification cylinder (1) are connected via a plurality of circumferentially distributed brackets (4), an exhaust pipe (5) is installed on the top of the purification cylinder (1), a controller (6) is installed on the outer wall of the purification cylinder (1), and a liquid outlet pipe (7) is provided through the side wall of the purification cylinder (1).

3. The tail gas purification device for a fermentation tank according to claim 2, characterized in that: The liquid replenishment drive mechanism (35) comprises a liquid distribution plate (351), a branch pipe (352), an electric control valve (353), a rotating pipe (354), an active bevel gear (355), a driven bevel gear (356) and a motor (357); the liquid distribution plate (351) is arranged at the top center of the rotating plate (31); the controller (6) is electrically connected to the motor (357) and the electric control valve (353), respectively; the electric control valve (353) is arranged on the branch pipe (352); the treatment cylinder (32) is connected to the rotating plate (31) via the branch pipe (354); 2) is connected to the liquid distribution tray (351), the bottom end of the rotating tube (354) is connected to the center of the top of the liquid distribution tray (351), the top end of the rotating tube (354) passes through the top of the purification cylinder (1) and is rotatably connected to the bottom of the liquid storage cylinder (2), the motor (357) is installed on the top of the purification cylinder (1), the driving bevel gear (355) is connected to the output shaft of the motor (357), the driven bevel gear (356) is sleeved on the rotating tube (354), and the driven bevel gear (356) is meshed with the driving bevel gear (355).

4. The tail gas purification device for a fermentation tank according to claim 1, characterized in that: The drainage mechanism (36) comprises a drainage hole (361), a sealing member (362), an elastic lifting member (363) and an extrusion member (364); a plurality of the drainage holes (361) are arranged on the wall of the treatment tube (32) near the bottom; the sealing member (362) is arranged in the treatment tube (32) for sealing the drainage holes (361); the elastic lifting member (363) is connected to the sealing member (362); the extrusion member (364) is arranged on the top of the air guide plate (33); and the extrusion member (364) is used to lift the sealing member (362) in the corresponding treatment tube (32) through the elastic lifting member (363) when the rotating plate (31) rotates.

5. The tail gas purification device for a fermentation tank according to claim 4, characterized in that: The sealing member (362) comprises a sealing ring (3621) and a movable ring (3622); the bottom of the movable ring (3622) is in contact with the inner lower surface of the treatment cylinder (32); the sealing ring (3621) is sleeved on the outer ring of the movable ring (3622), and the position of the sealing ring (3621) corresponds to that of the drainage hole (361).

6. The tail gas purification device for a fermentation tank according to claim 5, characterized in that: The elastic lifting member (363) includes a push rod (3631), a movable plate (3632), a sliding rod (3633) and a spring (3634). A plurality of the sliding rods (3633) are circumferentially connected to the top of the movable plate (3632), and the top of the sliding rod (3633) slides through the bottom of the processing tube (32) and is connected to the movable ring (3622). The spring (3634) is sleeved on the sliding rod (3633), and the spring (3634) is installed between the processing tube (32) and the movable plate (3632). The push rod (3631) is installed at the bottom center of the movable plate (3632).

7. The tail gas purification device for a fermentation tank according to claim 6, characterized in that: The extrusion member (364) comprises an arc-shaped groove (3641), an L-shaped rod (3642), an extrusion plate (3643) and an arc-shaped plate (3644); the arc-shaped groove (3641) is connected to the top edge of the air guide plate (33) via the L-shaped rod (3642); the arc-shaped plate (3644) and the extrusion plate (3643) are both arranged in the arc-shaped groove (3641); one end of the extrusion plate (3643) is connected to the arc-shaped plate (3644); the height of the extrusion plate (3643) gradually decreases from the end away from the arc-shaped plate (3644); the arc-shaped groove (3641) is used to drive the corresponding ejector rod (3631) to move along its trajectory when the rotating plate (31) rotates.

8. The tail gas purification device for a fermentation tank according to claim 2, characterized in that: A liquid level sensor (8) is installed on the internal upper surface of the treatment cylinder (32), and a concentration sensor (9) is installed on the inner cylinder wall of the treatment cylinder (32) close to the bottom. The concentration sensor (9) is used to detect whether the absorption liquid in the treatment cylinder (32) is ineffective. The liquid level sensor (8) and the concentration sensor (9) are both electrically connected to the controller (6).

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