Tail gas purification equipment for fermentation tank

Abstract

The invention discloses tail gas purification equipment for a fermentation tank, relates to the technical field of waste gas purification equipment, and solves the technical problems that absorption liquid cannot be fully utilized when tail gas of the fermentation tank is purified, and the waste of the absorption liquid is easily caused. Comprising a purification cylinder and a liquid storage cylinder, and a treatment mechanism for absorbing tail gas is arranged between the purification cylinder and the liquid storage cylinder; the treatment mechanism comprises a rotating plate, treatment barrels, a gas guide disc, a gas inlet mechanism, a liquid supplementing driving mechanism, a liquid discharging mechanism and a gas guide and exhaust mechanism, the multiple treatment barrels are annularly distributed in the purification barrel at equal intervals and connected through the gas guide and exhaust mechanism, the rotating plate and the gas guide disc are installed in the purification barrel, and the rotating plate is connected with the treatment barrels in a sleeving mode; and the treatment cylinder is connected with the liquid storage tank through a liquid supplementing driving mechanism. According to the invention, the tail gas of the fermentation tank can be conveniently subjected to multi-stage purification treatment, the treatment effect is improved, the absorption liquid for tail gas purification can be fully utilized, and the waste of resources is effectively reduced.

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: 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; The treatment mechanism includes a rotating plate, a treatment cylinder, an air guide disk, an air intake mechanism, a liquid replenishment drive mechanism, a liquid discharge mechanism and an air guide mechanism. A plurality of the treatment cylinders are equidistantly distributed in a ring in the purification cylinder, and the plurality of treatment cylinders are connected via the air guide mechanism. The rotating plate and the air guide disk are installed in the purification cylinder, and the rotating plate is sleeved with the treatment cylinder. The treatment cylinder is connected to the liquid storage tank via a liquid replenishment drive mechanism. The liquid replenishment drive mechanism is used to replenish the absorption liquid into the corresponding treatment cylinder and control the rotation of the rotating plate. The liquid discharge mechanism is arranged between the treatment cylinder and the air guide disk, and the liquid discharge mechanism is used to discharge the expired absorption liquid in the treatment cylinder. The air intake mechanism is installed on the air guide disk, and the air intake mechanism is used to introduce the exhaust gas into the corresponding treatment cylinder.

[0006] As a further solution 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 by a plurality of circumferentially distributed brackets, an exhaust pipe is installed on the top of the purification cylinder, a controller is installed on the outer wall of the purification cylinder, and a liquid outlet pipe is provided through the side wall of the purification cylinder.

[0007] As a further solution of the present invention: the air intake mechanism includes an air intake pipe, an aeration pipe, an annular cover and an arc-shaped seal with a support rod, one end of the air intake pipe is connected to the bottom of the air guide plate, and the other end passes through the purification cylinder and extends outward, an annular opening is arranged on the top of the air guide plate, and the annular cover is rotatably connected to the annular opening, one end of the aeration pipe extends to the inner cavity of the treatment cylinder, the other end of the aeration pipe passes through the annular plate and the annular cover in sequence, and its end face is flush with the top of the arc-shaped seal, and the bottom of the arc-shaped seal is connected to the inner lower surface of the air guide plate through a support rod.

[0008] As a further solution of the present invention: the exhaust gas guiding mechanism includes a connecting pipe, a one-way valve and an exhaust valve, a connecting pipe is provided between the side walls of two adjacent treatment cylinders near the top ends, one end of the connecting pipe is connected to the inner cavity of one of the treatment cylinders, and the other end of the connecting pipe is connected to the aeration pipe in the other treatment cylinder, the one-way valve is installed on the connecting pipe, the exhaust valve is electrically connected to the controller, and the exhaust valve is arranged on the top of the treatment cylinder.

[0009] As a further solution of the present invention: the liquid replenishing drive mechanism includes a liquid distribution tray, a branch pipe, an electric control valve, a rotating pipe, a driving bevel gear, a driven bevel gear and a motor. The liquid distribution tray is arranged at the top center of the annular 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 treatment cylinder is connected with the liquid distribution tray through the branch pipe, the bottom end of the rotating pipe is connected with the top center of the liquid distribution tray, the top end of the rotating pipe passes through the top of the purification cylinder and is rotatably connected to the bottom of the liquid storage cylinder, the motor is installed at the top of the purification cylinder, the driving bevel gear is connected to the motor output shaft, the driven bevel gear is sleeved on the rotating pipe, and the driven bevel gear is meshed with the driving bevel gear.

[0010] As a further solution of the present invention: the drainage mechanism includes a drainage hole, a sealing part, an elastic lifting part and an extrusion part, several of the drainage holes are arranged on the cylinder wall near the bottom end of the treatment cylinder, the sealing part is arranged in the treatment cylinder for sealing the drainage hole, the elastic lifting part is connected to the sealing part, the extrusion part is arranged on the top of the air guide plate, and the extrusion part is used to lift the sealing part in the corresponding treatment cylinder through the elastic lifting part when the turntable rotates.

[0011] As a further solution of the present invention: the sealing member includes a sealing ring and a movable ring, the bottom of the movable ring is in contact with the inner lower surface of the treatment tube, the sealing ring is sleeved on the outer ring of the movable ring, and the sealing ring corresponds to the position of the drainage hole.

[0012] As a further solution of the present invention: the elastic lifting member includes a push 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 end of the sliding rod slides through the bottom of the processing tube and is connected to the movable ring, the spring is sleeved on the sliding rod, and the spring is installed between the processing tube and the movable plate, and the push rod is installed at the bottom center of the movable plate.

[0013] As a further solution of the present invention: the extrusion part includes an arc groove, an L-shaped rod, an extrusion plate and an arc plate, the arc groove is connected to the top edge of the air guide plate through the L-shaped rod, the arc plate and the extrusion plate are both arranged in the arc groove, and one end of the extrusion plate is connected to the arc plate, the extrusion plate gradually decreases from the height away from one end of the arc plate, and the arc groove is used to drive the corresponding top rod to move along its trajectory when the rotating plate rotates.

[0014] As a further solution of the present invention: a liquid level sensor is installed on the internal upper surface of the treatment cylinder, and a concentration sensor is installed on the inner cylinder wall near the bottom of the treatment cylinder. The concentration sensor is used to detect whether the absorption liquid in the treatment cylinder is ineffective. The liquid level sensor and the concentration sensor are both electrically connected to the controller.

[0015] Beneficial effects of the present invention: 1. In the present invention, the air intake mechanism is not only convenient for injecting the exhaust gas to be purified into the air guide disk, but also convenient for guiding the exhaust gas in the air guide disk into one of the corresponding treatment tubes. The exhaust guide and exhaust mechanism is not only convenient for the exhaust gas to flow through multiple treatment tubes in sequence to achieve sufficient treatment of the exhaust gas, but also convenient for discharging the fully purified gas. After the absorption liquid in the treatment tube that contacts the exhaust gas for the first time is completely consumed, the control plate is rotated to facilitate switching the position of each treatment tube, so that the exhaust gas treatment will not be interrupted, which is conducive to ensuring the exhaust gas treatment efficiency.

[0016] 2. In the present invention, when the rotating plate rotates to switch the position of the treatment cylinder, the fully consumed absorption liquid in the treatment cylinder can not only be automatically discharged, but also the treatment cylinder can be restored to a closed state after being completely discharged. The use of the liquid replenishment drive mechanism is not only convenient for controlling the rotation of the rotating plate, but also convenient for automatically replenishing new absorption liquid into the treatment cylinder after the drainage, which not only facilitates the full utilization of the absorption liquid and avoids waste of resources, but also can effectively ensure that the exhaust gas can achieve multi-stage purification treatment and ensure the treatment effect of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a stereoscopic diagram of an exhaust gas purification device for a fermentation tank of the present invention; Figure 2 It is a cutaway perspective view of an exhaust gas purification device for a fermentation tank according to the present invention; Figure 3 It is a stereoscopic diagram of a tail gas purification device for a fermentation tank of the present invention after a liquid storage cylinder is removed; Figure 4 It is a partial stereogram of a processing mechanism in an exhaust gas purification device for a fermentation tank of the present invention; Figure 5 It is a stereoscopic diagram of the connection part between the aeration pipe and the arc-shaped sealing strip in the tail gas purification equipment for the fermentation tank of the present invention; Figure 6 It is a schematic diagram of the top view of the structure of the connection part between multiple treatment cylinders in a tail gas purification device for a fermentation tank of the present invention; Figure 7 It is a stereoscopic diagram of a liquid replenishing driving mechanism in an exhaust gas purification device for a fermentation tank of the present invention; Figure 8 It is a three-dimensional diagram of a treatment cylinder and an aeration pipe in a tail gas purification device for a fermentation tank according to the present invention after being cut apart; Fig. 9 It is a stereoscopic diagram of the connection part between the elastic lifting member and the blocking member in the tail gas purification device for a fermentation tank of the present invention; Fig.10 It is a stereoscopic diagram of an extrusion component in an exhaust gas purification device for a fermentation tank according to the present invention.

[0019] In the figure: 1, purification cylinder; 2, liquid storage cylinder; 3, treatment mechanism; 31, rotating plate; 32, treatment cylinder; 33, air guide plate; 34, air intake mechanism; 341, air intake pipe; 342, aeration pipe; 343, annular cover; 344, support rod; 345, arc seal; 35, liquid replenishment drive mechanism; 351, liquid distribution plate; 352, branch pipe; 353, electric control valve; 354, rotating pipe; 355, active bevel gear; 356, driven bevel gear; 357, motor; 36, drainage mechanism; 361, drainage hole; 362, plugging Parts; 3621, sealing ring; 3622, movable ring; 363, elastic lifting part; 3631, push rod; 3632, movable plate; 3633, sliding rod; 3634, spring; 364, extrusion part; 3641, arc groove; 3642, L-shaped rod; 3643, extrusion plate; 3644, arc plate; 37, exhaust mechanism; 371, connecting pipe; 372, one-way valve; 373, exhaust valve; 4, bracket; 5, exhaust pipe; 6, controller; 7, liquid outlet pipe; 8, liquid level sensor; 9, concentration sensor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 10 As shown, the present invention is an exhaust gas purification device for a fermentation tank, comprising a purification cylinder 1 and a liquid storage cylinder 2, wherein a processing mechanism 3 for absorbing exhaust gas is arranged 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 replenishment driving mechanism 35, a liquid discharge mechanism 36 and an exhaust guide mechanism 37, a plurality of processing cylinders 32 are annularly and equidistantly distributed in the purification cylinder 1, and the plurality of processing cylinders 32 are connected by the exhaust guide mechanism 37, and the rotating plate 31 and the air guide plate 33 are arranged It is installed in the purification cylinder 1, and the rotating plate 31 is sleeved with the treatment cylinder 32. The treatment cylinder 32 and the liquid storage tank are connected through a liquid replenishing drive mechanism 35. The liquid replenishing 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 drainage mechanism 36 is arranged between the treatment cylinder 32 and the air guide plate 33, and the drainage mechanism 36 is used to discharge the ineffective absorption liquid in the treatment cylinder 32. The air intake mechanism 34 is installed on the air guide plate 33, and the air intake mechanism 34 is used to introduce the exhaust gas into the corresponding treatment cylinder 32.

[0022] It should be noted that, when in use, the tail gas of the fermentation tank is introduced into one of the corresponding treatment cylinders 32 through the air intake mechanism 34, so that the tail gas first contacts and reacts with the absorption liquid in the treatment cylinder 32, and the tail gas that has not been purified gathers in the treatment cylinder 32, and enters the next treatment cylinder 32 through the exhaust guide mechanism 37 to continue to be purified, and in this way, the tail gas can be fully treated by the absorption liquid in multiple treatment cylinders 32. With the continuous injection of tail gas, the treatment cylinder 32 that first contacts the tail gas, the absorption liquid concentration inside it will gradually decrease until it fails. At this time, the liquid replenishment drive mechanism 35 is used to drive the rotating plate 31 to rotate to a set angle, and the drainage mechanism 36 is used to conveniently discharge the failed absorption liquid in the corresponding treatment cylinder 32; After all the absorption liquid is discharged, the control rotating plate 31 continues to rotate at an appropriate angle, so that the treatment cylinder 32 that was initially in contact with the exhaust gas moves to the position of its adjacent treatment cylinder 32, thereby realizing the position exchange of each treatment cylinder 32. At this time, the liquid replenishment drive mechanism 35 can also be used to automatically replenish the new absorption liquid in the liquid storage cylinder 2 to the corresponding treatment cylinder 32, and then repeat the above operation, which can not only perform multi-stage purification treatment on the exhaust gas, but also make full use of the absorption liquid to avoid waste of resources.

[0023] like Figure 2 and Figure 4-Figure 5 As shown, the air intake mechanism 34 includes an air intake pipe 341, an aeration pipe 342, an annular cover 343 and an arc-shaped seal 345 with a support rod 344. One end of the air intake pipe 341 is connected to the bottom of the air guide plate 33, and the other end passes through the purification cylinder 1 and extends outward. An annular opening is set 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 its treatment cylinder 32, and the other end of the aeration pipe 342 passes through the annular plate and the annular cover 343 in sequence, and its end face is flush with the top of the arc-shaped seal 345. The bottom of the arc-shaped seal 345 is connected to the inner lower surface of the air guide plate 33 through the support rod 344.

[0024] 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 of the rotating connection. In this embodiment, the number of treatment tubes 32 is specifically 6, and the top of the arc seal 345 is in contact with the end faces of 5 aeration pipes 342. Only the end face of one aeration pipe 342 is not in contact with the arc seal 345. That is to say, when the exhaust gas enters the air guide plate 33 through the intake pipe 341, the exhaust gas can only enter the inner cavity of the treatment tube 32 through one of the unblocked aeration pipes 342.

[0025] like Figure 2 , Figure 4 and Figure 6As shown, the exhaust mechanism 37 includes 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 cylinders 32 near the top. One end of the connecting pipe 371 is connected to the inner cavity of one of the treatment cylinders 32, and the other end of the connecting pipe 371 is connected to the aeration pipe 342 in the other treatment cylinder 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 set at the top of the treatment cylinder 32.

[0026] It should be noted that the one-way valve 372 is used to allow the exhaust gas to flow in only one direction through the connecting pipe 371. Figure 6 The tail gas flows counterclockwise. The tail gas that first enters the treatment tube 32 cannot be completely purified by the absorption liquid. The unpurified tail gas enters the aeration pipe 342 in the corresponding treatment tube 32 through the connecting pipe 371, and then the tail gas continues to contact and react with the absorption liquid in the treatment tube 32. This cycle allows the tail gas to be purified at multiple stages to ensure the treatment effect. During the purification process, only the exhaust valve 373 located on the treatment tube 32 at the end of the purification is in the open state, and the exhaust valve 373 is used to conveniently discharge the purified tail gas.

[0027] like Figure 1 and Figure 8 As 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 of the treatment cylinder 32 near 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.

[0028] It should be noted that with the continuous injection of exhaust gas, the absorption liquid in the treatment cylinder 32 will gradually be consumed, especially the absorption liquid that first contacts the exhaust gas. The concentration sensor 9 is used to conveniently detect whether the absorption liquid inside the treatment cylinder 32 that first contacts the exhaust gas is completely consumed and becomes invalid. The liquid level sensor 8 is used to conveniently detect the absorption liquid level in the treatment cylinder 32 to avoid excessive absorption liquid in the subsequent treatment cylinder 32.

[0029] like Figure 4 , Figure 8 and Fig.10 As shown, the drainage mechanism 36 includes a drainage hole 361, a sealing member 362, an elastic lifting member 363 and an extrusion member 364. Several drainage holes 361 are arranged on the wall of the treatment tube 32 near the bottom end. The sealing member 362 is arranged in the treatment tube 32 to block 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.

[0030] It should be noted that when the absorption liquid inside the treatment cylinder 32 that initially contacts the exhaust gas fails, the control rotating plate 31 is rotated clockwise to a set angle. During the rotation, the extrusion member 364 applies an upward thrust to the elastic lifting member 363, thereby causing the sealing member 362 to slide up, thereby opening the drainage hole 361 for automatic drainage. After the drainage is completed, the control rotating plate 31 continues to rotate until the treatment cylinder 32 that initially contacts the exhaust gas moves to the position of its adjacent treatment cylinder 32. At this time, the elastic lifting member 363 drives the sealing member 362 to reset, thereby allowing the treatment cylinder 32 to be closed again.

[0031] like Figure 8-Figure 9 As shown, the blocking member 362 includes a sealing ring 3621 and a movable ring 3622 . The bottom of the movable ring 3622 fits 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 sealing ring 3621 corresponds to the position of the drainage hole 361 .

[0032] It should be noted that when the movable ring 3622 is in contact with the inner lower surface of the processing cylinder 32, the sealing ring 3621 can cover and shield the drainage hole 361 to achieve sealing.

[0033] like Figure 8-Figure 9 As shown, 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 sliding rods 3633 are circumferentially connected to the top of the movable plate 3632, and the top end of the sliding rod 3633 slides through the bottom of the processing cylinder 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 cylinder 32 and the movable plate 3632. The push rod 3631 is installed at the bottom center of the movable plate 3632.

[0034] It should be noted that the spring 3634 is in a partially compressed and force-storing state in its initial state. In this state, the movable ring 3622 can press against the inner lower surface of the processing tube 32 , which is beneficial to ensure the stability of the position of the sealing member 362 .

[0035] like Figure 4 , Fig. 9 and Fig.10 As shown, the extrusion member 364 includes an arc groove 3641, an L-shaped rod 3642, an extrusion plate 3643 and an arc plate 3644. The arc groove 3641 is connected to the top edge of the air guide plate 33 through the L-shaped rod 3642. The arc plate 3644 and the extrusion plate 3643 are both arranged in the arc groove 3641, and one end of the extrusion plate 3643 is connected to the arc plate 3644. The extrusion plate 3643 gradually decreases from the height away from one end of the arc plate 3644. The arc groove 3641 is used to drive the corresponding top rod 3631 to move along its trajectory when the rotating plate 31 rotates.

[0036] 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.

[0037] like Figure 1-Figure 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.

[0038] 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.

[0039] like Figure 2 and Figure 7-Figure 8 As shown, the liquid replenishment drive mechanism 35 includes a liquid distribution pan 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 pan 351 is arranged at the top center of the annular plate, 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 pan 351 through the branch pipe 352, the bottom end of the rotating pipe 354 is connected to the top center of the liquid distribution pan 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.

[0040] 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. 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.

[0041] 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 treatment mechanism (3) for absorbing tail gas is arranged between the purification cylinder (1) and the liquid storage cylinder (2); the treatment mechanism (3) comprises a rotating plate (31), a treatment cylinder (32), an air guide plate (33), an air intake mechanism (34), a liquid replenishment drive mechanism (35), a liquid discharge mechanism (36) and an air guide mechanism (37); a plurality of the treatment cylinders (32) are annularly and equidistantly distributed in the purification cylinder (1); and the plurality of treatment 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 treatment cylinder (32) are sleeved; and the treatment cylinder (32) is arranged in a circular manner. The treatment cylinder (32) is connected to the liquid storage tank 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 exhaust gas into the corresponding treatment cylinder (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 1, characterized in that: The air intake mechanism (34) comprises an air intake pipe (341), an aeration pipe (342), an annular cover (343), and an arc-shaped seal (345) with a support rod (344); one end of the air intake pipe (341) is connected to the bottom of the air guide plate (33), and the other end passes through the purification cylinder (1) and extends outward; an annular opening is provided 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) passes through the annular plate and the annular cover (343) in sequence, and its end surface is flush with the top of the arc-shaped seal (345); the bottom of the arc-shaped seal (345) is connected to the inner lower surface of the air guide plate (33) via the support rod (344).

4. The tail gas purification device for a fermentation tank according to claim 3, characterized in that: 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).

5. 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), a driving 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 annular plate; 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 treatment cylinder (32) via the branch pipe (352) The rotating tube (354) 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).

6. 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.

7. The tail gas purification device for a fermentation tank according to claim 6, 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).

8. The tail gas purification device for a fermentation tank according to claim 7, 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).

9. The tail gas purification device for a fermentation tank according to claim 8, 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.

10. 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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