Tail gas treatment device and treatment process thereof

Abstract

The present application relates to tail gas treatment technical field, specifically relates to a kind of tail gas treatment device and processing process thereof;The present application provides a kind of tail gas treatment device, processing cylinder, processing cylinder inside hollow;Conveying part, conveying part is set in the side of processing cylinder, conveying part is suitable for conveying tail gas to the bottom of processing cylinder;Flow dividing disc, flow dividing disc rotation is set in processing cylinder, and flow dividing disc middle part matrix is suitable for being set with a plurality of first gas holes;Adjusting part, adjusting part is set in processing cylinder, and its adjusting part is linked with flow dividing disc;Supporting tray, supporting tray is slidably set above adjusting part, and adjusting disc is matrix and is suitable for being set with a plurality of second gas holes;Wherein, flow dividing disc positive rotation is suitable for driving adjusting part to move downwards, to flow dividing disc and supporting tray abut;Tail gas is suitable for flowing upwards along the third gas hole of the outer ring of flow dividing disc;Flow dividing disc reverse rotation is to adjusting part to move upwards to maximum stroke, flow dividing disc is suitable for disturbing airflow.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas treatment, in particular to a tail gas treatment device and a treatment process thereof. BACKGROUND

[0002] The main purpose of tail gas treatment is to remove toxic and harmful substances and smoke dust in industrial production exhaust gas, so that the treated exhaust gas can meet the emission standard and reduce air pollution.

[0003] In the related art, the tail gas is transported from the bottom to the treatment cylinder, and the tail gas flows from bottom to top. In order to increase the residence time of the tail gas in the treatment cylinder, the entering flow and the flow rate are usually reduced. However, when the entering flow and the flow rate are large, the residence time of the tail gas in the treatment cylinder is reduced, resulting in poor treatment effect.

[0004] Therefore, how to solve the problem that tail gas with different flow rates can prolong the residence time is a technical problem to be solved in the field. SUMMARY

[0005] The present application aims to provide a tail gas treatment device and a treatment process thereof.

[0006] In order to solve the above technical problem, the present application provides a tail gas treatment device, comprising:

[0007] A treatment cylinder, which is hollow inside;

[0008] A conveying part, which is arranged on one side of the treatment cylinder, and is adapted to convey the tail gas to the bottom of the treatment cylinder;

[0009] A flow dividing disc, which is rotatably arranged in the treatment cylinder, and a plurality of first air holes are arranged in the middle of the flow dividing disc in a matrix manner;

[0010] An adjusting part, which is arranged in the treatment cylinder in a lifting manner, and the adjusting part is connected with the flow dividing disc;

[0011] A supporting disc, which is arranged above the adjusting part in a sliding manner, and a plurality of second air holes are arranged on the supporting disc in a matrix manner;

[0012] When the flow dividing disc rotates forward, the adjusting part is driven to move downward until the flow dividing disc and the supporting disc abut;

[0013] The tail gas flows upward along the third air holes of the outer ring of the flow dividing disc;

[0014] When the flow dividing disc rotates reversely, the adjusting part moves upward to the maximum stroke, and the flow dividing disc disturbs the air flow.

[0015] As preferred, the adjusting member comprises an adjusting sleeve, which is vertically arranged, and a helical groove is formed in the inner wall of the adjusting sleeve from bottom to top;

[0016] A shunt ring is fixed at the upper end of the adjusting sleeve, and the shunt ring is adapted to abut against the supporting tray.

[0017] As preferred, the shunt disc is circumferentially provided with a ring groove which is adapted to the shunt ring, the shunt ring is adapted to be inserted into the ring groove, and a plurality of third air holes are equidistantly arranged on the ring groove.

[0018] As preferred, a plurality of fourth air holes are formed in the shunt ring, and the fourth air holes are tapered.

[0019] As preferred, a sealing cone is vertically arranged in each fourth air hole, and the lower end of the sealing cone protrudes out of the shunt ring;

[0020] When the shunt ring abuts against the shunt disc, the sealing cone moves upward, and the exhaust gas is adapted to flow from the third air hole to the fourth air hole.

[0021] As preferred, the first air hole and the second air hole are arranged in a staggered manner, and when the shunt disc and the supporting tray abut against each other, the first air hole and the second air hole are staggered with each other.

[0022] As preferred, a positioning ring groove is circumferentially formed in the inner wall of the adjusting sleeve, and the positioning ring groove is in communication with the helical groove.

[0023] As preferred, a protrusion is fixed on the outer wall of the shunt disc, and the protrusion is adapted to slide in the positioning ring groove and the helical groove;

[0024] When the shunt disc rotates forward, the protrusion is adapted to move from the positioning ring groove to the helical groove;

[0025] When the shunt disc rotates reversely, the protrusion is adapted to slide from the helical groove to the positioning ring groove.

[0026] As preferred, a plurality of elastic members are fixed on the supporting tray, the upper end of the elastic member is fixed on the inner top wall of the processing cylinder, and the elastic member is adapted to push the supporting tray to move downward.

[0027] As preferred, a groove is formed in the inner wall of the upper end of the processing cylinder, and when the supporting tray moves upward, the elastic member is adapted to be deformed into the groove.

[0028] As preferred, activated carbon is placed on the supporting tray, and the activated carbon is adapted to adsorb harmful gas in the exhaust gas;

[0029] When the supporting tray moves upward or downward, the activated carbon is adapted to be stirred.

[0030] In another aspect, the present application also provides a processing process of the tail gas processing device, comprising the following steps:

[0031] The conveying part is suitable for conveying the tail gas to the bottom of the processing cylinder, and the tail gas flows from bottom to top, and when the tail gas flows through the activated carbon, the activated carbon is suitable for adsorbing harmful gases in the tail gas;

[0032] When the gas flow and flow rate entering the processing cylinder are small, the shunt disc rotates forward, and the protrusions on the outer wall of the shunt disc are suitable for moving from the positioning ring groove to the spiral groove, and as the shunt disc continues to rotate, the shunt disc is suitable for driving the adjusting sleeve to move downward to the abutment between the shunt ring and the bottom wall of the ring groove;

[0033] At this time, the shunt disc and the supporting disc abut against each other, and the first gas hole and the second gas hole are arranged in a staggered manner;

[0034] The sealing cone is pushed upward by the shunt disc, and the tail gas is suitable for flowing upward through the third gas hole and the fourth gas hole;

[0035] When the gas flow and flow rate entering the processing cylinder are large, the shunt disc rotates reversely, and the protrusions on the outer wall of the shunt disc are suitable for moving from the spiral groove to the positioning ring groove;

[0036] The shunt disc reversely rotates and is suitable for driving the adjusting sleeve to move upward to the maximum stroke, at this time, the shunt disc is suitable for rotating circumferentially relative to the supporting disc;

[0037] When the shunt disc rotates circumferentially, the tail gas is suitable for flowing upward through the first gas hole, and the shunt disc is suitable for disturbing the airflow to flow spirally upward in the processing cylinder, thereby improving the residence time of the airflow in the processing cylinder.

[0038] The beneficial effects of the present application are that, through the cooperation of the shunt disc and the adjusting part, the residence time of the tail gas in the processing cylinder is prolonged by adjusting the adjusting part to move up and down according to the gas flow and flow rate entering the processing cylinder, and at the same time, the upward or downward movement of the adjusting part can also turn over the activated carbon, thereby improving the adsorption effect of the activated carbon on the tail gas.

[0039] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application.

[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are referred to for a detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0042] Figure 1 is a perspective view of a preferred embodiment of a tail gas treatment device of the present application;

[0043] Figure 2 is a cross-sectional perspective view of a processing cartridge of the present application;

[0044] Figure 3 is a cross-sectional perspective view of an adjusting member of the present application;

[0045] Figure 4 is a schematic diagram of the state of disturbing airflow of a flow distribution disc of the present application;

[0046] Figure 5 is a schematic diagram of the abutting state of a supporting tray and a flow distribution disc of the present application;

[0047] Figure 6 is a schematic diagram of forward rotation of a flow distribution disc of the present application;

[0048] Figure 7 is a schematic diagram of reverse rotation of a flow distribution disc of the present application.

[0049] In the drawings:

[0050] 1, processing cartridge; 10, groove;

[0051] 2, conveying part;

[0052] 3, flow distribution disc; 30, first air hole; 31, third air hole; 32, protruding block;

[0053] 4, adjusting member; 41, adjusting sleeve; 42, flow distribution ring; 43, fourth air hole; 44, sealing cone; 45, positioning ring groove; 46, helical groove;

[0054] 5, supporting tray; 50, second air hole; 51, elastic member. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0056] In some embodiments, as shown in Figures 1 to 7 Figure 1, the present application provides a tail gas treatment device, comprising: a treatment cylinder 1, the inside of which is hollow; the lower end of the treatment cylinder 1 is provided with an air inlet pipe, which is in communication with the conveying part 2; the upper end of the treatment cylinder 1 is provided with an air outlet pipe, through which the treated tail gas is discharged out of the treatment cylinder 1. The conveying part 2 is arranged on one side of the treatment cylinder 1, and is adapted to convey the tail gas to the bottom of the treatment cylinder 1; the flow distribution disc 3 is rotatably arranged in the treatment cylinder 1, and a plurality of first air holes 30 are arranged in the matrix of the middle part of the flow distribution disc 3; the outer bottom of the treatment cylinder 1 is fixed with a driving member, the rotating shaft of the driving member is adapted to be inserted into the treatment cylinder 1, and the flow distribution disc 3 is fixed at the end of the rotating shaft of the driving member; the rotating shaft of the driving member has a self-locking function, when the driving member stops driving the rotating shaft to rotate circumferentially, the rotating shaft will not rotate circumferentially relative to the driving member; at the same time, the flow distribution disc 3 remains relatively stationary relative to the driving member. The driving member is adapted to drive the flow distribution disc 3 to rotate forward and backward. The adjusting member 4 is arranged in the treatment cylinder 1 in a lifting manner, and the adjusting member 4 is linked with the flow distribution disc 3; a limiting strip is fixed on the inner wall of the treatment cylinder 1 in an axial symmetry manner, and a limiting groove is arranged on the outer wall of the adjusting sleeve 41, which is adapted to limit the adjusting sleeve 41, preventing it from rotating synchronously with the flow distribution disc 3. The supporting tray 5 is slidingly arranged above the adjusting member 4, and a plurality of second air holes 50 are arranged in the matrix of the supporting tray 5; a containing cavity is arranged between the supporting tray 5 and the inner top wall of the treatment cylinder 1, and the containing cavity is adapted to store activated carbon; when the supporting tray 5 moves up and down, the activated carbon in the containing cavity is stirred. When the flow distribution disc 3 rotates forward, at this time, the flow rate and flow volume of the tail gas flowing into the treatment cylinder 1 are relatively small, and the adjusting member 4 is adapted to move downward until the flow distribution disc 3 and the supporting tray 5 abut; at this time, the first air holes 30 and the second air holes 50 are misaligned with each other, and the tail gas cannot flow upward through the second air holes 50. The tail gas is adapted to flow upward through the third air holes 31 around the outer circle of the flow distribution disc 3; the tail gas can only flow upward through the third air holes 31 and the fourth air holes 43.

[0057] When the flow distribution disc 3 rotates reversely, at this time, the flow volume and flow rate of the tail gas flowing into the treatment cylinder 1 are relatively large, and the adjusting member 4 moves upward to the maximum stroke, and the flow distribution disc 3 is adapted to disturb the airflow. The rotation of the flow distribution disc 3 can make the airflow between the flow distribution disc 3 and the supporting tray 5 be disturbed to form a rotational flow, and when the rotational flow passes through the second air holes 50, the contact area between the tail gas and the activated carbon can be increased. At the same time, the supporting tray 5 is pushed to flow upward, and the upward movement of the supporting tray 5 is adapted to compress the volume of the containing cavity, and the activated carbon is simultaneously compacted, further increasing the contact area between the activated carbon and the tail gas and prolonging the contact time.

[0058] Referring to the drawings Figure 3 The adjusting member 4 comprises an adjusting sleeve 41, which is vertically arranged, and a helical groove 46 is annularly formed on the inner wall of the adjusting sleeve 41 from bottom to top; a protrusion 32 is fixed to the outer wall of the shunt disc 3, the protrusion 32 is cylindrical, and the protrusion 32 is adapted to slide in the positioning ring groove 45 and the helical groove 46; referring to the drawings Figure 6 When the shunt disc 3 rotates forward, the protrusion 32 moves in the positioning ring groove 45, and when the positioning ring groove 45 intersects with the helical groove 46, the adjusting sleeve 41 moves downward under the action of its own gravity, so that the protrusion 32 can slide into the helical groove 46. The shunt disc 3 continues to rotate, and the protrusion 32 is adapted to slide in the helical groove 46. The shunt disc 3 drives the protrusion 32 to rotate, and the protrusion is adapted to drive the adjusting sleeve 41 to move downward, until the upper end of the shunt disc 3 is inserted into the shunt ring 42.

[0059] Referring to the drawings Figure 7 When the shunt disc 3 rotates reversely, the protrusion 32 is adapted to slide from the helical groove 46 into the positioning ring groove 45. After the protrusion 32 slides into the positioning ring groove 45, the shunt disc 3 is adapted to rotate relative to the adjusting sleeve 41 in the circumferential direction. The shunt ring 42 is fixed to the upper end of the adjusting sleeve 41, and the shunt ring 42 is adapted to abut against the supporting tray 5. A positioning ring groove 45 is annularly formed on the inner wall of the adjusting sleeve 41 in the circumferential direction, and the positioning ring groove 45 is in communication with the helical groove 46. When the shunt ring 42 abuts against the shunt disc 3, at this time, the upper end of the shunt disc 3 abuts against the bottom wall of the supporting tray 5, at this time, the first gas hole 30 and the second gas hole 50 are misaligned with each other, and the tail gas flowing from bottom to top can only flow upward through the third gas hole 31 and the fourth gas hole 43. One third gas hole 31 corresponds to one fourth gas hole 43, when the adjusting sleeve 41 moves downward, until the shunt disc 3 abuts against the supporting tray 5, the third gas hole 31 and the fourth gas hole 43 correspondingly communicate.

[0060] The shunt disc 3 is annularly formed with a ring groove which is adapted to the shunt ring 42, the shunt ring 42 is adapted to be inserted into the ring groove, and a plurality of third gas holes 31 are equidistantly arranged on the ring groove. A plurality of fourth gas holes 43 are annularly formed on the shunt ring 42, and the fourth gas holes 43 are tapered. A sealing cone 44 is vertically arranged in each fourth gas hole 43, and the lower end of the sealing cone 44 abuts against the shunt ring 42; wherein, when the shunt ring 42 abuts against the shunt disc 3, the sealing cone 44 moves upward, and the tail gas is adapted to flow from the third gas hole 31 to the fourth gas hole 43. When the supporting tray 5 abuts against the shunt disc 3, at this time, the space of the accommodating cavity at the upper end of the supporting tray 5 increases, the elastic member 51 changes from the curved shape to the vertical shape, and the elastic member 51 is adapted to flip the activated carbon in the accommodating cavity.

[0061] Referring to the drawings Figure 4, the first air hole 30 and the second air hole 50 are misaligned, when the shunt disc 3 and the supporting disc 5 abut, the first air hole 30 and the second air hole 50 are misaligned. The tail gas can only flow upward through the third air hole 31 and the fourth air hole 43.

[0062] Reference is made to the accompanying drawings Figure 2 , in order to facilitate the turning of the activated carbon, a plurality of elastic members 51 are fixed on the supporting disc, the upper end of the elastic member 51 is fixed on the inner top wall of the processing cylinder 1, the elastic member 51 is suitable for pushing the supporting disc to move downward. A groove 10 is arranged on the inner top wall of the processing cylinder 1, when the supporting disc moves upward, the elastic member 51 is suitable for being extruded to deform into the groove 10. The activated carbon is placed on the supporting disc, the activated carbon is suitable for adsorbing the harmful gas in the tail gas; wherein, when the supporting disc 5 moves upward or downward, the activated carbon is suitable for being turned. When the adjusting sleeve 41 moves upward, the adjusting sleeve 41 pushes the supporting disc 5 to move upward synchronously, the supporting disc 5 is suitable for pushing the elastic member 51 to deform upward, so that the elastic member 51 can be bent to deform into the groove 10. The bending or straightening of the elastic member 51 can turn the activated carbon on the supporting disc 5.

[0063] In some embodiments, the application also provides a processing process of a tail gas processing device, comprising the following steps:

[0064] The conveying part 2 is suitable for conveying the tail gas to the bottom of the processing cylinder 1, the tail gas flows upward from bottom to top, when the tail gas flows through the activated carbon, the activated carbon is suitable for adsorbing the harmful gas in the tail gas;

[0065] When the flow and flow rate of the gas entering the processing cylinder 1 are small, the shunt disc 3 rotates forward, the convex block 32 of the outer wall of the shunt disc 3 is suitable for moving from the positioning ring groove 45 into the spiral groove 46, with the continuous rotation of the shunt disc 3, the shunt disc 3 is suitable for driving the adjusting sleeve 41 to move downward, until the shunt ring 42 abuts against the bottom wall of the ring groove;

[0066] At this time, the shunt disc 3 and the supporting disc abut against each other, and the first air hole 30 and the second air hole 50 are misaligned;

[0067] The sealing cone 44 is pushed upward by the shunt disc 3, the tail gas is suitable for flowing upward through the third air hole 31 and the fourth air hole 43;

[0068] When the flow and flow rate of the gas entering the processing cylinder 1 are large, the shunt disc 3 rotates reversely, the convex block 32 of the outer wall of the shunt disc 3 is suitable for moving from the spiral groove 46 into the positioning ring groove 45;

[0069] The shunt disc 3 rotates reversely, and is suitable for driving the adjusting sleeve 41 to move upward to the maximum stroke, at this time, the shunt disc 3 is suitable for rotating circumferentially relative to the supporting disc;

[0070] When the shunt disc 3 rotates in the circumferential direction, the exhaust gas is adapted to flow upwards through the first gas holes 30, and the shunt disc 3 is adapted to disturb the flow, so that it flows upwards in a spiral in the treatment cylinder 1, which increases the residence time of the flow in the treatment cylinder 1.

[0071] Each device (parts not described in detail) selected in the present application is a general standard part or a part known to those skilled in the art, and its structure and principle can be known to those skilled in the art through a technical manual or through a conventional experimental method.

[0072] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0073] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0074] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents of the specification, and must be determined by the scope of the claims.

Claims

1. An exhaust gas treatment device, characterized by, Include: Processing cylinder (1), the processing cylinder (1) is hollow inside; Conveying part (2), the conveying part (2) is arranged on one side of the processing cylinder (1), and the conveying part (2) is suitable for conveying exhaust gas to the bottom of the processing cylinder (1); The shunt plate (3) is rotatably arranged in the processing cylinder (1), and a plurality of first air holes (30) are arranged in the middle of the shunt plate (3) in a matrix manner; Adjusting part (4), the adjusting part (4) is arranged in the processing cylinder (1) in a lifting manner, and the adjusting part (4) is connected with the shunt plate (3); The supporting tray (5) is arranged above the adjusting part (4) in a sliding manner, and a plurality of second air holes (50) are arranged on the supporting tray (5) in a matrix manner; Wherein, when the shunt plate (3) rotates forward, the adjusting part (4) is driven to move downward until the shunt plate (3) and the supporting tray (5) abut; The exhaust gas is suitable for flowing upward along the third air hole (31) of the outer circle of the shunt plate (3); The shunt plate (3) rotates reversely, and the adjusting part (4) moves upward to the maximum stroke, and the shunt plate (3) is suitable for disturbing the airflow; The adjusting part (4) comprises: an adjusting sleeve (41), the adjusting sleeve (41) is vertically arranged, and a spiral groove (46) is formed in the inner wall of the adjusting sleeve (41) from bottom to top; The shunt ring (42) is fixed to the upper end of the adjusting sleeve (41), and the shunt ring (42) is suitable for abutting with the supporting tray (5); A plurality of fourth air holes (43) are arranged on the shunt ring (42), and the fourth air holes (43) are tapered; The first air hole (30) and the second air hole (50) are arranged in a staggered manner, and when the shunt plate (3) and the supporting tray (5) abut, the first air hole (30) and the second air hole (50) are staggered with each other; The inner wall of the adjusting sleeve (41) is circumferentially provided with a positioning ring groove (45), and the positioning ring groove (45) is communicated with the spiral groove (46); The outer wall of the shunt plate (3) is fixed with a protrusion (32), and the protrusion (32) is suitable for sliding in the positioning ring groove (45) and the spiral groove (46); Wherein, when the shunt plate (3) rotates forward, the protrusion (32) is suitable for moving from the positioning ring groove (45) to the spiral groove (46); When the shunt plate (3) rotates reversely, the protrusion (32) is suitable for sliding from the spiral groove (46) to the positioning ring groove (45).

2. The exhaust gas treatment device according to claim 1, wherein: The shunt plate (3) is circumferentially provided with a ring groove matched with the shunt ring (42), the shunt ring (42) is suitable for being inserted into the ring groove, and a plurality of third air holes (31) are arranged on the ring groove at equal intervals.

3. The exhaust gas treatment device according to claim 2, wherein: A sealing cone (44) is arranged in each fourth air hole (43) in a lifting manner, and the lower end of the sealing cone (44) protrudes from the shunt ring (42). Wherein, when the shunt ring (42) abuts against the shunt disc (3), the sealing cone (44) moves upward, and the tail gas is adapted to flow to the fourth gas hole (43) through the third gas hole (31).

4. The tail gas treatment device according to claim 3, characterized in that: The supporting tray (5) is fixed with a plurality of elastic members (51), the upper end of the elastic member (51) is fixed to the inner top wall of the treatment cylinder (1), and the elastic member (51) is adapted to push the supporting tray (5) to move downward.

5. The tail gas treatment device according to claim 4, characterized in that: A groove (10) is formed in the inner wall of the upper end of the treatment cylinder (1), and the supporting tray (5) is adapted to extrude the elastic member (51) to deform into the groove (10) when moving upward.

6. The tail gas treatment device according to claim 5, characterized in that: The supporting tray (5) is placed with activated carbon, and the activated carbon is adapted to adsorb harmful gases in the tail gas; Wherein, when the supporting tray (5) moves upward or downward, the activated carbon is adapted to be stirred.

7. A process for treating exhaust gas of an exhaust gas treatment device, characterized in that Using the tail gas treatment device according to claim 6, comprising the following steps: The conveying part (2) is adapted to convey the tail gas to the bottom of the treatment cylinder (1), and the tail gas flows from bottom to top, and the activated carbon is adapted to adsorb harmful gases in the tail gas when the tail gas flows through the activated carbon; When the flow rate and flow velocity of the gas entering the treatment cylinder (1) are small, the shunt disc (3) rotates forward, the protrusions on the outer wall of the shunt disc (3) are adapted to move from the positioning ring groove (45) to the spiral groove (46), and as the shunt disc (3) continues to rotate, the shunt disc (3) is adapted to drive the adjusting sleeve (41) to move downward until the shunt ring (42) abuts against the bottom wall of the ring groove; At this time, the shunt disc (3) and the supporting tray (5) abut against each other, and the first gas hole (30) and the second gas hole (50) are arranged in a staggered manner; The sealing cone (44) is pushed upward by the shunt disc (3), and the tail gas is adapted to flow upward through the third gas hole (31) and the fourth gas hole (43); When the flow rate and flow velocity of the gas entering the treatment cylinder (1) are large, the shunt disc (3) rotates reversely, and the protrusions on the outer wall of the shunt disc (3) are adapted to move from the spiral groove (46) to the positioning ring groove (45); The shunt disc (3) reversely rotates and is adapted to drive the adjusting sleeve (41) to move upward to the maximum stroke, at this time, the shunt disc (3) is adapted to rotate circumferentially relative to the supporting tray (5); When the shunt disc (3) rotates circumferentially, the tail gas is adapted to flow upward through the first gas hole (30), and the shunt disc (3) is adapted to disturb the airflow to flow spirally upward in the treatment cylinder (1), thereby increasing the residence time of the airflow in the treatment cylinder (1).

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