An exhaust gas buffer device for dry ice production

Abstract

The present invention belongs to the technical field of dry ice production, and specifically refers to an exhaust gas buffer device for dry ice production, including a base, a support platform, a buffer cylinder, an exhaust pipe, a cone-shaped impurity filtering mechanism and an air storage type spraying mechanism, wherein the support platform is arranged on the upper wall of the base, the buffer cylinder is arranged on the upper wall of the support platform, the exhaust pipe is connected and arranged on one side of the buffer cylinder, the cone-shaped impurity filtering mechanism is arranged inside the buffer cylinder, the air storage type spraying mechanism is arranged on the side wall of the buffer cylinder, and the cone-shaped impurity filtering mechanism includes a fine grinding mechanism, a filtering mechanism and an exhaust mechanism. The present invention provides an exhaust gas buffer device that can grind larger volume particulate impurities contained in the exhaust gas, ensure the filtering efficiency of the filter net on the exhaust gas, and can recover the compression energy generated when buffering the exhaust gas, and increase the initial pressure of the pulse wave when spraying the filter net, and is mainly used for dry ice production.

Description

Technical Field

[0001] The invention belongs to the technical field of dry ice production, and specifically refers to an exhaust gas buffer device used for dry ice production. Background Art

[0002] In the production process of dry ice, liquid carbon dioxide is rapidly depressurized and cooled through specific equipment and converted into solid dry ice. A large amount of carbon dioxide tail gas is generated in this process. If these tail gases are discharged directly without treatment, it will not only cause environmental pollution, but also a waste of resources. Therefore, it is necessary to buffer the tail gas before it enters the recovery system.

[0003] The existing exhaust gas buffer equipment has the following problems:

[0004] The existing exhaust gas buffer equipment does not have the ability to grind impurities in the exhaust gas. When filtering the exhaust gas, the larger impurity particles will generate a stronger impact force under the kinetic energy of the exhaust gas. The larger the particles and the more irregular the shape, the greater the impact force they generate, which in turn accelerates the wear of the filter screen and affects its filtering performance. Therefore, it cannot meet the existing use requirements for industrial exhaust gas buffer equipment. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present solution provides a device that can grind away larger volume particulate impurities contained in the exhaust gas, ensure the filtering efficiency of the filter for the exhaust gas, and recover the compression energy generated when buffering the exhaust gas, thereby increasing the initial pressure of the pulse wave when blowing the filter. It is mainly used for exhaust buffering equipment in dry ice production.

[0006] The technical scheme adopted in this scheme is as follows: This scheme proposes an exhaust gas buffer device for dry ice production, including a base, a support platform, a buffer cylinder, an exhaust gas pipe, a cone-type filter mechanism and an air storage type spray net mechanism, the support platform is arranged on the upper wall of the base, the buffer cylinder is arranged on the upper wall of the support platform, the exhaust gas pipe is connected and arranged on one side of the buffer cylinder, the cone-type filter mechanism is arranged inside the buffer cylinder, the air storage type spray net mechanism is arranged on the side wall of the buffer cylinder, the cone-type filter mechanism includes a fine grinding mechanism, a filtering mechanism and an exhaust mechanism, the fine grinding mechanism is arranged on the inner wall of the buffer cylinder, the filtering mechanism is arranged on the outside of the fine grinding mechanism, the exhaust mechanism is arranged on the side wall of the filtering mechanism, the air storage type spray net mechanism includes an air collecting mechanism and a cleaning mechanism, the air collecting mechanism is arranged on the side wall of the base, and the cleaning mechanism is arranged on the bottom wall of the air collecting mechanism.

[0007] As a further preferred embodiment of the present invention, the fine grinding mechanism includes a buffer spring, a cone-carrying plate, a conical cylinder, a grinding layer, a driving motor and a driving frame. The buffer spring is arranged on the inner wall of the end of the buffer cylinder away from the tailpipe, the cone-carrying plate is arranged on the side of the buffer spring away from the inner wall of the buffer cylinder, the conical cylinder is rotatably arranged on the side of the cone-carrying plate away from the buffer spring, the end of the conical cylinder close to the cone-carrying plate is open, multiple groups of grinding layers are arranged on the outside of the conical cylinder, the driving motor is arranged on the side wall of the cone-carrying plate inside the conical cylinder, and the driving frame is arranged between the power end of the driving motor and the inner wall of the conical cylinder; the filtering mechanism includes a sliding ring plate, a filter plate and a filter hole, and the sliding ring plate is slidingly arranged On the inner wall of the buffer cylinder, the filter plate is arranged between the sliding ring plate and the conical cylinder, and multiple groups of filter holes are arranged on the side wall of the filter plate; the exhaust mechanism includes an annular box, a one-way exhaust valve, an exhaust box, an exhaust telescopic pipe, an exhaust pipe and a pipe clamp, the annular box is arranged on the sliding ring plate and the side wall of the cone plate outside the filter plate, the annular box is opened at one end, multiple groups of the one-way exhaust valves are connected and arranged on the side of the annular box away from the sliding ring plate, the exhaust box is arranged on the inner wall of the buffer cylinder outside the buffer spring, the exhaust telescopic pipes are connected and arranged between the one-way exhaust valve and the exhaust box, multiple groups of the exhaust pipes penetrate the buffer cylinder and are connected and arranged on the side wall of the exhaust box, and the pipe clamp is arranged between the exhaust pipe and the buffer cylinder.

[0008] When in use, the exhaust gas generated in the process of preparing dry ice enters the buffer cylinder through the exhaust pipe. In the initial state, the buffer spring is extended, and the buffer spring uses deformation to drive the conical cylinder close to the exhaust pipe through the carrier cone plate. The distance between the conical cylinder and the exhaust pipe is the shortest, and the exhaust gas entering the buffer cylinder from the exhaust pipe impacts the surface of the conical cylinder. When facing the flowing exhaust gas, the conical cylinder can guide the exhaust gas to flow along its surface. The larger impurities in the exhaust gas contact with the grinding layer, thereby reducing the volume of the impurities in the exhaust gas and reducing the impact and destructive force of the exhaust gas. The exhaust gas after being guided by the conical cylinder enters the annular box after being filtered through the filter plate and the filter hole. The exhaust gas inside the annular box flows into the exhaust box through the exhaust telescopic pipe, and the exhaust box discharges the exhaust gas through the exhaust pipe.

[0009] Preferably, the gas collecting mechanism includes a gas collecting one-way valve, a gas collecting pipe and a gas collecting cylinder, the gas collecting pipe is connected to the side wall of the buffer cylinder between the exhaust pipes, and the gas collecting cylinder is connected to the side of the gas collecting pipe away from the buffer cylinder; the cleaning mechanism includes a pulse generator, a charging pipe, a blowing pipe, a blowing telescopic pipe, a blowing electric valve, a plugging plate and a plugging bolt, the pulse generator is arranged on the upper wall of the base, the charging pipe is connected between the power output end of the pulse generator and the bottom wall of the gas collecting cylinder, multiple groups of the blowing electric valves are connected on the side of the annular box away from the sliding ring plate, the blowing telescopic pipe is arranged between the blowing electric valve and the exhaust box, the blowing telescopic pipe is connected to the blowing electric valve, the blowing pipe passes through the exhaust box and is connected between the blowing telescopic pipe and the gas collecting cylinder, the plugging plate is arranged on the side wall of the buffer cylinder opening, the plugging bolt is arranged on the inner wall of the plugging plate, the end of the plugging bolt away from the plugging plate passes through the inner wall of the buffer cylinder, and the plugging bolt is threadedly connected to the buffer cylinder.

[0010] When in use, the opening of the gas collecting one-way valve is controlled, and the exhaust gas enters the buffer cylinder and impacts the conical cylinder. The conical cylinder uses the elastic deformation of the buffer spring to slide along the inner wall of the buffer cylinder through the filter plate. The conical cylinder buffers and reduces the speed of the impact force of the exhaust gas. When the conical cylinder drives the sliding ring plate to move, the sliding ring plate squeezes the gas inside the buffer cylinder into the gas collecting pipe through the annular box. The gas collecting pipe transports the gas to the inside of the gas collecting cylinder to increase the initial pressure of the gas collecting cylinder.

[0011] Specifically, a controller is provided on the upper wall of the base.

[0012] Wherein, the controller is electrically connected to the pulse generator and the spray electric valve respectively.

[0013] Preferably, the model of the controller is SYC89C52RC-401.

[0014] The beneficial effects achieved by adopting the above structure are as follows:

[0015] Compared with the prior art, the present invention adopts a combination of a diversion buffer structure and a diversion grinding structure. Through the cone-type filtering mechanism and the air storage type spraying mechanism, the conical windward surface of the conical cylinder is used to divert and guide the impactful exhaust gas under the coordinated use of the fine grinding mechanism, the filtering mechanism, the exhaust mechanism, the air collecting mechanism and the cleaning mechanism, so that the exhaust gas flows along the surface of the conical cylinder. The conical cylinder uses the friction of the grinding layer to crush the larger impurities in the exhaust gas, thereby reducing the impact and destructive ability of the impurities in the exhaust gas. Under the deformation of the buffer spring, the exhaust gas can be buffered to ensure that the exhaust gas has appropriate pressure when entering the recovery system, thereby avoiding excessive impact on the system. The larger impurities in the exhaust gas contact with the grinding layer, thereby reducing the volume of the impurities in the exhaust gas and reducing the impact and destructive force of the exhaust gas. The exhaust gas guided by the conical cylinder enters the annular box after being filtered through the filter plate and the filter hole. The exhaust gas inside the annular box flows into the exhaust box through the exhaust telescopic pipe, and the exhaust box discharges the exhaust gas through the one-way exhaust valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0017] Figure 2 This is the main stereogram of the scheme;

[0018] Figure 3 This is a schematic diagram of the internal structure of this scheme;

[0019] Figure 4 This is a schematic diagram of the structure of the buffer cylinder of this solution;

[0020] Figure 5 This is a schematic diagram of the combined structure of the fine grinding mechanism and the filtering mechanism of this scheme;

[0021] Figure 6 This is a schematic diagram of the structure of the exhaust mechanism of this scheme;

[0022] Figure 7 This is a schematic diagram of the combined structure of the drive motor and the drive frame of this solution;

[0023] Figure 8 This is a schematic diagram of the combined structure of the conical cylinder and the grinding layer of this scheme;

[0024] Fig. 9 This is the main view of this scheme;

[0025] Fig.10 This is a top view of the scheme;

[0026] Fig.11 for Fig.10 AA section view of the part;

[0027] Fig.12 for Fig.11 A magnified structural view of part I;

[0028] Fig.13 for Figure 3 A magnified structural view of Part II;

[0029] Fig.14 for Figure 3 A magnified structural view of Part III.

[0030] Among them, 1. base, 2. support table, 3. buffer cylinder, 4. cone-type filtering mechanism, 5. fine grinding mechanism, 6. buffer spring, 7. cone-carrying plate, 8. cone cylinder, 9. grinding layer, 10. filtering mechanism, 11. sliding ring plate, 12. filter plate, 13. filter hole, 14. exhaust mechanism, 15. ring box, 16. one-way exhaust valve, 17. exhaust box, 18. exhaust telescopic pipe, 19. exhaust pipe, 20. pipe clamp , 21. Gas storage type spraying mechanism, 22. Gas collecting mechanism, 23. Gas collecting one-way valve, 24. Gas collecting pipe, 25. Gas collecting cylinder, 26. Cleaning mechanism, 27. Pulse generator, 28. Charging pipe, 29. Blowing pipe, 30. Blowing telescopic pipe, 31. Blowing electric valve, 32. Controller, 33. Tail pipe, 34. Blocking plate, 35. Blocking bolt, 36. Intake one-way valve, 37. Drive motor, 38. Drive frame.

[0031] The accompanying drawings are used to provide further understanding of the present scheme and constitute a part of the specification. Together with the embodiments of the present scheme, they are used to explain the present scheme and do not constitute a limitation on the present scheme. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the present scheme will be clearly and completely described below in conjunction with the drawings in the embodiments of the present scheme. Obviously, the described embodiments are only part of the embodiments of the present scheme, not all of the embodiments; based on the embodiments in the present scheme, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present scheme.

[0033] In the description of this scheme, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this scheme.

[0034] like Figure 1-Figure 14As shown, the present scheme proposes an exhaust gas buffer device for dry ice production, comprising a base 1, a support platform 2, a buffer cylinder 3, an exhaust pipe 33, a cone-type filter mechanism 4 and an air storage type spray net mechanism 21, wherein the support platform 2 is arranged on the upper wall of the base 1, the buffer cylinder 3 is arranged on the upper wall of the support platform 2, the exhaust pipe 33 is connected and arranged on one side of the buffer cylinder 3, the cone-type filter mechanism 4 is arranged inside the buffer cylinder 3, the air storage type spray net mechanism 21 is arranged on the side wall of the buffer cylinder 3, the cone-type filter mechanism 4 comprises a fine grinding mechanism 5, a filtering mechanism 10 and an exhaust mechanism 14, the fine grinding mechanism 5 is arranged on the inner wall of the buffer cylinder 3, the filtering mechanism 10 is arranged on the outside of the fine grinding mechanism 5, the exhaust mechanism 14 is arranged on the side wall of the filtering mechanism 10, the air storage type spray net mechanism 21 comprises an air collecting mechanism 22 and a cleaning mechanism 26, the air collecting mechanism 22 is arranged on the side wall of the base 1, and the cleaning mechanism 26 is arranged on the bottom wall of the air collecting mechanism 22.

[0035] The fine grinding mechanism 5 includes a buffer spring 6, a cone plate 7, a conical cylinder 8, a grinding layer 9, a driving motor 37 and a driving frame 38. The buffer spring 6 is arranged on the inner wall of the end of the buffer cylinder 3 away from the tail pipe 33, the cone plate 7 is arranged on the side of the buffer spring 6 away from the inner wall of the buffer cylinder 3, the conical cylinder 8 is rotatably arranged on the side of the cone plate 7 away from the buffer spring 6, and the end of the conical cylinder 8 close to the cone plate 7 is open. Multiple groups of grinding layers 9 are arranged on the outside of the conical cylinder 8, the driving motor 37 is arranged on the side wall of the cone plate 7 inside the conical cylinder 8, and the driving frame 38 is arranged between the power end of the driving motor 37 and the inner wall of the conical cylinder 8; the filtering mechanism 10 includes a sliding ring plate 11, a filter plate 12 and a filtering hole 13, the sliding ring plate 11 is slidably arranged on the inner wall of the buffer cylinder 3, the filter plate 12 It is arranged between the sliding ring plate 11 and the conical cylinder 8, and multiple groups of filter holes 13 are arranged on the side wall of the filter plate 12; the exhaust mechanism 14 includes an annular box 15, a one-way exhaust valve 16, an exhaust box 17, an exhaust telescopic pipe 18, an exhaust pipe 19 and a pipe clamp 20, the annular box 15 is arranged on the sliding ring plate 11 and the side wall of the cone plate 7 outside the filter plate 12, the annular box 15 is opened at one end, multiple groups of the one-way exhaust valves 16 are connected and arranged on the side of the annular box 15 away from the sliding ring plate 11, the exhaust box 17 is arranged on the inner wall of the buffer cylinder 3 outside the buffer spring 6, the exhaust telescopic pipe 18 is connected and arranged between the one-way exhaust valve 16 and the exhaust box 17, multiple groups of the exhaust pipes 19 penetrate the buffer cylinder 3 and are connected and arranged on the side wall of the exhaust box 17, and the pipe clamp 20 is arranged between the exhaust pipe 19 and the buffer cylinder 3.

[0036] The gas collecting mechanism 22 includes a gas collecting one-way valve 23, a gas collecting pipe 24, a gas collecting cylinder 25 and an intake one-way valve 36. The gas collecting pipe 24 is connected to the side wall of the buffer cylinder 3 between the exhaust pipes 19, and the gas collecting cylinder 25 is connected to the side of the gas collecting pipe 24 away from the buffer cylinder 3. The intake one-way valve 36 is connected to the upper wall of the buffer cylinder 3 away from the tail pipe 33; the cleaning mechanism 26 includes a pulse generator 27, a charging pipe 28, a blowing pipe 29, a blowing telescopic pipe 30, a blowing electric valve 31, a plugging plate 34 and a plugging bolt 35. The pulse generator 27 is arranged on the upper wall of the base 1, and the charging pipe 28 is connected to the pulse generator. Between the power output end of the device 27 and the bottom wall of the air collecting cylinder 25, multiple groups of the blowing electric valves 31 are connected and arranged on the side of the annular box 15 away from the sliding ring plate 11, the blowing telescopic pipe 30 is arranged between the blowing electric valve 31 and the exhaust box 17, the blowing telescopic pipe 30 is connected to the blowing electric valve 31, the blowing pipe 29 passes through the exhaust box 17 and is connected between the blowing telescopic pipe 30 and the air collecting cylinder 25, the plugging plate 34 is arranged on the side wall of the opening of the buffer cylinder 3, the plugging bolt 35 is arranged on the inner wall of the plugging plate 34, the end of the plugging bolt 35 away from the plugging plate 34 passes through the inner wall of the buffer cylinder 3, and the plugging bolt 35 is threadedly connected to the buffer cylinder 3.

[0037] A controller 32 is disposed on the upper wall of the base 1 .

[0038] The controller 32 is electrically connected to the pulse generator 27 and the spraying electric valve 31 respectively.

[0039] The model of the controller 32 is SYC89C52RC-401.

[0040] When used specifically, in the first embodiment, in the initial state, the buffer spring 6 is extended, and the buffer spring 6 drives the conical cylinder 8 to approach the tail pipe 33 through the cone-carrying plate 7 by deformation, and the distance between the conical cylinder 8 and the tail pipe 33 is the shortest, and the exhaust pipe 19 is connected to the input end of the recovery system;

[0041] The exhaust gas generated during the preparation of dry ice enters the buffer cylinder 3 through the exhaust pipe 33. The exhaust gas entering the buffer cylinder 3 through the exhaust pipe 33 impacts the surface of the conical cylinder 8. The conical cylinder 8 uses the elastic deformation of the buffer spring 6 to slide along the inner wall of the buffer cylinder 3 through the filter plate 12. The conical cylinder 8 buffers and reduces the impact force of the exhaust gas. When facing the flowing exhaust gas, the conical cylinder 8 can guide the exhaust gas to flow along its surface. Large impurities in the exhaust gas contact with the grinding layer 9. The controller 32 controls the drive motor 37 to start, and the drive motor 37 is turned on. The driving frame 38 is driven to rotate by the power end, and the driving frame 38 drives the conical cylinder 8 to rotate, so that the impurities are fully in contact with the grinding layer 9, thereby reducing the volume of impurities in the exhaust gas and reducing the impact and destructive force of the exhaust gas. The exhaust gas guided by the conical cylinder 8 enters the annular box 15 after being filtered by the filter plate 12 and the filter hole 13. The exhaust gas in the annular box 15 flows into the exhaust box 17 through the exhaust telescopic pipe 18. The exhaust box 17 discharges the exhaust gas through the exhaust pipe 19. The exhaust gas discharged from the exhaust pipe 19 enters the recovery system.

[0042] Embodiment 2, based on the above embodiment, manually controls the opening of the gas collecting one-way valve 23, when the conical cylinder 8 drives the sliding ring plate 11 to move, the sliding ring plate 11 squeezes the gas inside the buffer cylinder 3 into the gas collecting pipe 24 through the annular box 15, and the gas collecting pipe 24 transports the gas to the gas collecting cylinder 25, thereby increasing the initial pressure of the gas collecting cylinder 25, and after the grinding layer 9 grinds the impurities in the tail gas, the amount of impurities increases, which is easy to block the filter hole 13, and the impurities inside the filter hole 13 need to be cleaned regularly, and the plugging bolt 35 is rotated, and the plugging bolt 35 is unscrewed from the inside of the buffer cylinder 3, and the plugging plate 34 is removed from the side wall of the opening of the buffer cylinder 3, and the controller 32 controls the pulse generator 27 to start, and the pulse generator 27 is pressurized The tube 28 sprays pulse waves into the air collecting cylinder 25, and the controller 32 controls the blowing electric valve 31 to open. The blowing telescopic tube 30 is connected to the annular box 15. After the pulse wave flows through the blowing telescopic tube 30 through the blowing tube 29, it is sprayed to the surface of the filter plate 12 through the blowing electric valve 31. The buffer spring 6 is set to be extended, and the distance between the filter plate 12 and the opening of the buffer cylinder 3 is the shortest value. The outside air enters the buffer cylinder 3 through the air intake check valve 36. Under the blowing of the blowing electric valve 31, the dust in the filter holes 13 on the inner wall of the filter plate 12 falls off, and the dust that falls into the buffer cylinder 3 is cleaned out through its opening. After completing the cleaning of the filter holes 13, the controller 32 controls the blowing electric valve 31 to close; just repeat the above operation when using it next time.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] The above is a description of the present solution and its implementation methods, which is not restrictive. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the creative purpose of the present solution, they should all fall within the protection scope of the present solution.

Claims

1. An exhaust gas buffer device for dry ice production, comprising a base (1), a support platform (2), a buffer cylinder (3) and an exhaust gas pipe (33), characterized in that: It also includes a cone-shaped impurity filtering mechanism (4) and an air storage type mesh spraying mechanism (21), the support platform (2) is arranged on the upper wall of the base (1), the buffer cylinder (3) is arranged on the upper wall of the support platform (2), the tail gas pipe (33) is connected and arranged on one side of the buffer cylinder (3), the cone-shaped impurity filtering mechanism (4) is arranged inside the buffer cylinder (3), and the air storage type mesh spraying mechanism (21) is arranged on the side wall of the buffer cylinder (3); The cone-type impurity filtering mechanism (4) comprises a fine grinding mechanism (5), a filtering mechanism (10) and an exhaust mechanism (14); the fine grinding mechanism (5) is arranged on the inner wall of the buffer cylinder (3), the filtering mechanism (10) is arranged on the outer side of the fine grinding mechanism (5), and the exhaust mechanism (14) is arranged on the side wall of the filtering mechanism (10); The air storage type spraying mechanism (21) comprises an air collecting mechanism (22) and a cleaning mechanism (26); the air collecting mechanism (22) is arranged on a side wall of the base (1), and the cleaning mechanism (26) is arranged on a bottom wall of the air collecting mechanism (22); The fine grinding mechanism (5) comprises a buffer spring (6), a cone-carrying plate (7), a conical cylinder (8), a grinding layer (9), a driving motor (37) and a driving frame (38); The buffer spring (6) is arranged on the inner wall of one end of the buffer cylinder (3) away from the tailpipe (33), the cone plate (7) is arranged on the side of the buffer spring (6) away from the inner wall of the buffer cylinder (3), the conical cylinder (8) is rotatably arranged on the side of the cone plate (7) away from the buffer spring (6), the end of the conical cylinder (8) close to the cone plate (7) is open, a plurality of groups of grinding layers (9) are arranged on the outside of the conical cylinder (8), the driving motor (37) is arranged on the side wall of the cone plate (7) inside the conical cylinder (8), and the driving frame (38) is arranged between the power end of the driving motor (37) and the inner wall of the conical cylinder (8); The filtering mechanism (10) comprises a sliding ring plate (11), a filtering plate (12) and filtering holes (13); The sliding ring plate (11) is slidably disposed on the inner wall of the buffer cylinder (3), the filter plate (12) is disposed between the sliding ring plate (11) and the conical cylinder (8), and a plurality of groups of filter holes (13) are disposed on the side wall of the filter plate (12).

2. The tail gas buffer device for dry ice production according to claim 1, characterized in that: The exhaust mechanism (14) comprises an annular box (15), a one-way exhaust valve (16), an exhaust box (17), an exhaust telescopic pipe (18), an exhaust pipe (19) and a pipe clamp (20). The annular box (15) is arranged on the side wall of the sliding ring plate (11) and the cone-carrying plate (7) outside the filter plate (12). The annular box (15) is opened at one end. A plurality of groups of the one-way exhaust valves (16) are connected and arranged on a side of the annular box (15) away from the sliding ring plate (11). The exhaust box (17) is arranged on the inner wall of the buffer cylinder (3) outside the buffer spring (6). The exhaust telescopic pipe (18) is connected and arranged between the one-way exhaust valve (16) and the exhaust box (17). A plurality of groups of the exhaust pipes (19) penetrate the buffer cylinder (3) and are connected and arranged on the side wall of the exhaust box (17). The pipe clamp (20) is arranged between the exhaust pipe (19) and the buffer cylinder (3).

3. The tail gas buffering device for dry ice production according to claim 2, characterized in that: The gas collecting mechanism (22) comprises a gas collecting one-way valve (23), a gas collecting pipe (24) and a gas collecting cylinder (25); the gas collecting pipe (24) is in communication with a side wall of a buffer cylinder (3) disposed between exhaust pipes (19); and the gas collecting cylinder (25) is in communication with a side of the gas collecting pipe (24) away from the buffer cylinder (3).

4. The tail gas buffer device for dry ice production according to claim 3, characterized in that: The cleaning mechanism (26) comprises a pulse generator (27), a pressure charging pipe (28), a blowing pipe (29), a blowing telescopic pipe (30), a blowing electric valve (31), a plugging plate (34) and a plugging bolt (35); the pulse generator (27) is arranged on the upper wall of the base (1); the pressure charging pipe (28) is connected between the power output end of the pulse generator (27) and the bottom wall of the gas collecting cylinder (25); a plurality of groups of the blowing electric valves (31) are connected on a side of the annular box (15) away from the sliding ring plate (11); the blowing telescopic pipe (30) The blowing telescopic pipe (30) is arranged between the blowing electric valve (31) and the exhaust box (17), the blowing telescopic pipe (30) is connected to the blowing electric valve (31), the blowing pipe (29) passes through the exhaust box (17) and is connected between the blowing telescopic pipe (30) and the gas collecting cylinder (25), the plugging plate (34) is arranged on the side wall of the opening of the buffer cylinder (3), the plugging bolt (35) is arranged on the inner wall of the plugging plate (34), one end of the plugging bolt (35) away from the plugging plate (34) passes through the inner wall of the buffer cylinder (3), and the plugging bolt (35) is threadedly connected to the buffer cylinder (3).

5. The tail gas buffering device for dry ice production according to claim 4, characterized in that: A controller (32) is provided on the upper wall of the base (1).

6. The tail gas buffering device for dry ice production according to claim 5, characterized in that: The controller (32) is electrically connected to the pulse generator (27) and the spraying electric valve (31) respectively.

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