Environment-friendly treatment system for high-purity potassium sulfate tail gas

Abstract

The invention discloses a high-purity potassium sulfate tail gas environment-friendly treatment system, and relates to the technical field of waste gas recovery, the high-purity potassium sulfate tail gas environment-friendly treatment system comprises a tower body, a transmission assembly, a linkage assembly and a trigger assembly, the tower body is internally and reversely rotatably connected with two baffles, one side of the tower body is vertically and slidably connected with an opening and closing door, and one side of the tower body is provided with a collection box; two guide rails are symmetrically arranged in the tower body, a frame is connected to the two guide rails in a sliding mode, a first sliding block is horizontally connected to the interior of the frame in a sliding mode, a bearing filter plate and a first abutting block are fixedly connected to the two sides of the first sliding block respectively, and a check block is horizontally connected to the interior of the tower body in a sliding mode; in the process that the first abutting block slides towards the opening and closing door, an abutting station abutting against the first abutting block is arranged, the transmission assembly drives the frame to move towards the opening and closing door, and the linkage assembly is driven by the sliding process of the frame so that the opening and closing door can move upwards. The trigger assembly is driven by the upward moving process of the opening and closing door so that the first sliding block can be disengaged from the abutting station.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas recovery, and in particular to an environmentally friendly treatment system for high-purity potassium sulfate tail gas. Background Art

[0002] The process of preparing potassium sulfate is that calcium polyphosphate reacts with sulfuric acid and phosphoric acid to generate calcium dihydrogen phosphate and calcium sulfate. The most important thing is to activate the phosphorus in calcium polyphosphate to turn it into phosphate fertilizer. After the potassium chloride containing organic matter is calcined and filtered at high temperature, ammonium sulfate is added to it. According to the interaction of ions and the different solubility of various materials, high-purity potassium sulfate is crystallized and sold after drying. After the mother liquor is distilled to remove water, potassium chloride is crystallized and ammonium sulfate and other substances are used in the production of compound fertilizers. The exhaust gas generated in the preparation process needs to be treated by adsorption and can only be discharged into the air after meeting the emission standards.

[0003] For example, a Chinese patent with publication number CN211799762U and titled "A Tail Gas Recovery Device for Food-Grade Potassium Metabisulfite Production" includes a recovery chamber, the upper end of the recovery chamber is covered with an upper cover, a tail gas inlet pipe is provided at the center of the upper end of the upper cover, two recovery pipes are symmetrically installed on the upper ends of the upper covers on both sides of the tail gas inlet pipe, a connecting pipe is installed between the two recovery pipes, a return pipe is installed on the upper end of the connecting pipe, a production device is provided at the left end of the return pipe, and an induced draft fan is installed on the return pipe at the upper end of the production device; by the cooperation of the recovery pipe, the return pipe and the induced draft fan, the potassium metabisulfite tail gas can be prevented from flying in the recovery chamber, and the recovered tail gas can be returned to the production device to avoid waste; by the cooperation of the universal wheel and the hydraulic cylinder, the tail gas inlet pipe can be adjusted to a suitable position height by telescoping the height of the hydraulic cylinder to facilitate the connection of the tail gas; the potassium metabisulfite tail gas can be sterilized by the ultraviolet lamp.

[0004] Although the exhaust gas recovery device for food-grade potassium metabisulfite production in the above-mentioned patent is practical and convenient, it also has its shortcomings. Since the exhaust gas generated by the preparation of potassium sulfate contains a small amount of impurities such as water vapor, sulfuric acid gas, potassium sulfate dust, potassium chloride dust and anti-caking agent, these impurities will be adsorbed by the adsorbent in the absorption tower. It is necessary to collect and clean the impurities on the adsorbent for a certain period of time, otherwise it will cause the adsorbent to be blocked and affect the treatment effect of the exhaust gas. However, the above-mentioned device adopts a sealed structure as a whole or alternately replaces the adsorbent, which makes it more difficult to clean or replace the adsorbent in the tower. It may be necessary to stop the machine for replacement or exhaust gas leakage may occur during replacement, thereby reducing the purification efficiency of the exhaust gas generated when potassium sulfate is produced. Summary of the invention

[0005] The purpose of the present invention is to provide a high-purity potassium sulfate tail gas environmental protection treatment system to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: the high-purity potassium sulfate tail gas environmental protection treatment system comprises a tower body, a transmission assembly, a linkage assembly and a trigger assembly, wherein two baffles are connected in reverse rotation in the tower body, a switch door is vertically slidably connected to one side of the tower body, a collecting box is provided on one side of the tower body, two guide rails are symmetrically arranged in the tower body, a frame is slidably connected to the two guide rails, a first slider is horizontally slidably connected in the frame through an elastic assembly, a bearing filter plate and a first abutment block for carrying an adsorbent are respectively fixedly connected on both sides of the first slider, a block is horizontally slidably connected in the tower body, and in the process of the first abutment block sliding toward the switch door, there is an abutment position abutting against the block, when the two baffles rotate to be horizontally flush, the frame is driven to move toward the switch door through the transmission assembly, the linkage assembly is driven by the sliding process of the frame to move the switch door upward, and the trigger assembly is driven by the upward movement of the switch door to slide the block, so that the first abutment block is separated from the abutment position.

[0007] Furthermore, two rotating shafts are connected in counter-rotation in the tower body, the two baffles and the two rotating shafts are sleeved one-to-one, one end of the two rotating shafts is coaxially fixedly connected with a first gear, a first connecting plate is vertically slidably connected in the tower body, first racks are provided on both sides of the first connecting plate, and the two first racks are meshed and connected with the two first gears one-to-one.

[0008] Furthermore, the transmission assembly includes a second rack, a second gear meshing with the second rack, a screw and a second slider, the second rack is fixedly connected to the top of the first connecting plate, the screw is rotatably connected in a guide rail close to the first connecting plate, the second slider is slidably connected in the guide rail close to the first connecting plate, the second gear is coaxially fixedly connected to one end of the screw, the top of the second slider is fixedly connected to the bottom of the frame, and the slider is threadedly connected to the screw.

[0009] Furthermore, the linkage assembly includes two connecting columns and a rocker arm, the two connecting columns are respectively arranged on one side of the switch door and the frame, the two ends of the rocker arm are respectively rotatably sleeved with the two connecting columns, a guide groove is vertically opened in the tower body, and the switch door is vertically slidably connected in the guide groove.

[0010] Furthermore, the elastic component includes a guide rod and a first spring, the first spring is sleeved on the guide rod, a first slide groove is opened on one side of the frame, the guide rod is horizontally arranged in the first slide groove, the first slider is slidably sleeved on the guide rod, and the two ends of the first spring are respectively fixedly connected to the first slider and the bottom wall of the first slide groove.

[0011] Furthermore, the trigger assembly includes a second connecting plate and a second abutment block, a third slide groove is opened in the tower body, the block is slidably connected in the third slide groove, the second connecting plate is arranged between the baffle plate and the second abutment block, the second abutment block is inclined at one end close to the switch door, and the second abutment block is slidably abutted against the switch door.

[0012] Furthermore, a second telescopic rod is provided on one side of the groove wall of the third sliding groove and the second connecting plate, a third spring is sleeved on the second telescopic rod, and two ends of the third spring are respectively fixedly connected to the second connecting plate and the groove wall of the third sliding groove.

[0013] Furthermore, a second slide groove is vertically opened in the tower body, a connecting block is slidably connected in the second slide groove, a first telescopic rod is provided at the bottom of the connecting block, a second spring is sleeved on the first telescopic rod, and a blocking rod is provided on the top of the connecting block, and the top end of the blocking rod abuts and cooperates with the bottom of the blocking block.

[0014] Furthermore, a groove is vertically opened on the other side of the second connecting plate and passes through the block. A pushing block is fixedly connected to the side of the switch door close to the block. The pushing block is slidably connected in the groove. The pushing block abuts against the top end of the block rod, and the cross-sectional area of ​​the groove is smaller than the cross-sectional area of ​​the block rod.

[0015] Furthermore, an electric push rod is provided in the tower body, and an output end of the electric push rod is fixedly connected to the bottom of the first connecting plate.

[0016] Compared with the prior art, the present invention provides the following beneficial effects: when the two baffles of the high-purity potassium sulfate tail gas environmental protection treatment system rotate in the opposite direction to a horizontal position, the tail gas below can be blocked to prevent the tail gas from leaking without adsorption treatment when the adsorbent is replaced, and the frame is pushed out by the transmission component, and the switch door is opened by the linkage component. When the block abuts against the first abutment block, the frame and the supporting filter plate are relatively displaced, and the adsorbent on the supporting filter plate falls into the collection box, which is convenient for subsequent treatment of the saturated adsorbent, and when the adsorbent on the supporting filter plate falls into the collection box, the first abutment block is disengaged from the abutment position through the trigger component, and the supporting filter plate is driven to move by the elastic component, and then a new adsorbent is placed on the supporting filter plate, so that the replacement and collection of the adsorbent can be completed without stopping the machine, and at the same time, the difficulty of replacing the adsorbent is reduced, and the purification efficiency of the tail gas generated when potassium sulfate is produced is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0019] Figure 2 A top view of the overall structure provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0021] Figure 4 for Figure 3 Sectional view at the middle BB;

[0022] Figure 5 for Figure 4 Sectional view at CC;

[0023] Figure 6 for Figure 5 The enlarged view of point D in the middle;

[0024] Figure 7 A schematic diagram of a local structure provided by an embodiment of the present invention;

[0025] Figure 8 for Figure 7 Enlarged view of point E in the middle.

[0026] Explanation of the accompanying drawings: 1. tower body; 2. air inlet pipe; 3. air outlet pipe; 4. collecting box; 5. guide rail; 6. switch door; 7. frame; 8. load-bearing filter plate; 9. baffle; 10. electric push rod; 11. first connecting plate; 12. first rack; 13. first gear; 14. second rack; 15. rotating shaft; 16. second gear; 17. guide rod; 18. first spring; 19. first slide groove; 20. first slider; 21. first abutment block; 22. baffle; 23. baffle rod; 24. pushing block; 25. connecting block; 26. first telescopic rod; 27. second spring; 28. screw; 29. ​​second slider; 30. second connecting plate; 31. second telescopic rod; 32. third spring; 33. third slide groove; 34. second abutment block; 35. guide groove; 36. second slide groove; 37. connecting column; 38. rocker rod; 39. groove. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] See also Figure 1-8 A technical solution provided by an embodiment of the present invention: the high-purity potassium sulfate tail gas environmental protection treatment system includes a tower body 1, a transmission component, a linkage component and a trigger component. Two baffles 9 are connected to the tower body 1 for reverse rotation. A switch door 6 is vertically slidably connected to one side of the tower body 1. A collecting box 4 is provided on one side of the tower body 1. Two guide rails 5 are symmetrically arranged in the tower body 1. A frame 7 is slidably connected to the two guide rails 5. A first slider 20 is horizontally slidably connected to the frame 7 through an elastic component. A bearing filter plate 8 and a first abutment block 21 for bearing an adsorbent are fixedly connected on both sides of the first slider 20. The tower A stopper 22 is horizontally slidably connected inside the tower body 1. During the process of the first abutment block 21 sliding toward the switch door 6, there is an abutment position abutting against the stopper 22. When the two baffles 9 rotate to be horizontal and flush, the frame 7 is driven by the transmission assembly to move toward the switch door 6. The linkage assembly is driven by the sliding process of the frame 7 to move the switch door 6 upward. The trigger assembly is driven by the upward movement of the switch door 6 to slide the stopper 22, so that the first abutment block 21 is disengaged from the abutment position. Specifically, an air inlet pipe 2 for exhaust gas to enter is provided on one side of the tower body 1, and an air outlet pipe 3 for discharging treated exhaust gas is provided on the top of the tower body 1.

[0029] As a preferred technical solution, two rotating shafts 15 are connected in counter-rotation in the tower body 1, and the two baffles 9 and the two rotating shafts 15 are sleeved one-to-one. One end of the two rotating shafts 15 is coaxially fixedly connected with a first gear 13, and a first connecting plate 11 is vertically slidably connected in the tower body 1. First racks 12 are provided on both sides of the first connecting plate 11, and the two first racks 12 are meshed and connected with the two first gears 13 one-to-one. Specifically, an electric push rod 10 is provided in the tower body 1, and the output end of the electric push rod 10 is fixedly connected to the bottom of the first connecting plate 11. The electric push rod 10 drives the first connecting plate 11 to move upward, and the first connecting plate 11 drives the two first racks 12 to move upward, so that the two first racks 12 are meshed and transmitted with the two first gears 13, thereby realizing the reverse rotation of the two baffles 9. When the two baffles 9 rotate to a horizontal state, the exhaust gas below is blocked, which is convenient for the subsequent replacement of the adsorbent above and avoids the leakage of exhaust gas that has not been adsorbed.

[0030] As a preferred technical solution, the transmission assembly includes a second rack 14, a second gear 16 meshing with the second rack 14, a screw 28 and a second slider 29, the second rack 14 is fixedly connected to the top of the first connecting plate 11, the screw 28 is rotatably connected in the guide rail 5 close to the first connecting plate 11, the second slider 29 is slidably connected in the guide rail 5 close to the first connecting plate 11, the second gear 16 is coaxially fixedly connected to one end of the screw 28, the top of the second slider 29 is fixedly connected to the bottom of the frame 7, and the slider is screwed to the screw 28. Specifically, When the two baffles 9 rotate to the horizontal, the first connecting plate 11 continues to move up. At this time, the two first racks 12 and the two first gears 13 are no longer engaged, and the two baffles 9 remain horizontal. The second rack 14 moves up and engages with the second gear 16, driving the screw 28 to rotate. Through the spiral transmission, the second slider 29 is driven to move along the length direction of the screw 28, so that the frame 7 can move toward the switch door 6, and a spiral groove is provided on the screw 28, and a protrusion is provided in the second slider 29, which is slidably connected in the spiral groove, and the second slider 29 is slidably sleeved on the screw 28.

[0031] As a preferred technical solution, the linkage assembly includes two connecting columns 37 and a rocker arm 38. The two connecting columns 37 are respectively arranged on one side of the switch door 6 and the frame 7. The two ends of the rocker arm 38 are rotatably sleeved with the two connecting columns 37. A guide groove 35 is vertically opened in the tower body 1. The switch door 6 is vertically slidably connected in the guide groove 35. Specifically, when the frame 7 moves toward the switch door 6, the switch door 6 is pushed vertically upward along the guide groove 35 by the rocker arm 38, so that the frame 7 can move to the top of the collection box 4.

[0032] As a preferred technical solution, the elastic component includes a guide rod 17 and a first spring 18, the first spring 18 is sleeved on the guide rod 17, a first slide groove 19 is opened on one side of the frame 7, the guide rod 17 is horizontally arranged in the first slide groove 19, the first slider 20 is slidably sleeved on the guide rod 17, and the two ends of the first spring 18 are respectively fixedly connected to the first slider 20 and the bottom wall of the first slide groove 19. Specifically, when the first abutment block 21 disengages from the abutment position, the elastic deformation of the first spring 18 drives the supporting filter plate 8 to move horizontally toward the collecting box 4 until it moves to just above the collecting box 4, so as to facilitate the placement of new adsorbent on the supporting filter plate 8, so as to realize the replacement and collection of the adsorbent without stopping the machine, and at the same time reduce the difficulty of replacing the adsorbent.

[0033] As a preferred technical solution, the trigger assembly includes a second connecting plate 30 and a second abutment block 34. A third sliding groove 33 is provided in the tower body 1. The stopper 22 is slidably connected in the third sliding groove 33. The second connecting plate 30 is arranged between the baffle plate 9 and the second abutment block 34. The second abutment block 34 is inclined at one end close to the switch door 6, and the second abutment block 34 slides and abuts against the switch door 6. Specifically, after the adsorbent on the supporting filter plate 8 falls into the collection box 4, the supporting filter plate 8 needs to be reset to the initial position in the frame 7 before new adsorbent can be placed on the supporting filter plate 8. During the upward movement of the switch door 6, the top of the switch door 6 slides and abuts against the second abutment block 34. The second connecting plate 30 is moved in a direction away from the switch door 6 through the second abutment block 34, so that the stopper 22 no longer abuts against the first abutment block 21. Through the elastic deformation of the first spring 18, the supporting filter plate 8 is driven to move horizontally toward the collection box 4 until it moves to just above the collection box 4, so as to facilitate the placement of new adsorbent on the supporting filter plate 8.

[0034] As a preferred technical solution, a second telescopic rod 31 is provided on the groove wall of the third slide groove 33 and one side of the second connecting plate 30, and a third spring 32 is sleeved on the second telescopic rod 31. The two ends of the third spring 32 are respectively fixedly connected to the second connecting plate 30 and the groove wall of the third slide groove 33. Specifically, when the frame 7 is reset to the initial position, the second connecting plate 30 drives the stop block 22 to move to the initial position through the elastic deformation of the third spring 32, so as to facilitate the next replacement of the adsorbent.

[0035] As a preferred technical solution, a second slide groove 36 is vertically opened in the tower body 1, and a connecting block 25 is slidably connected in the second slide groove 36. A first telescopic rod 26 is provided at the bottom of the connecting block 25, and a second spring 27 is sleeved on the first telescopic rod 26. A blocking rod 23 is provided on the top of the connecting block 25, and the top of the blocking rod 23 abuts and cooperates with the bottom of the blocking block 22. Specifically, the process of the switch door 6 moving downward has a first stroke and a second stroke. When the blocking block 22 moves in a direction away from the switch door 6, the elastic deformation of the second spring 27 causes the connecting block 25 to drive the blocking rod 23 to move vertically upward. At this time, the peripheral side surface of the blocking rod 23 abuts against one side of the blocking block 22, so as to avoid the switch door 6 not abutting against the second abutting block 34 in the first stroke of the downward movement of the switch door 6, and the blocking block 22 is reset in advance. During the resetting process of the frame 7, the movement of the first abutting block 21 will be blocked, thereby causing motion interference and blocking the resetting of the frame 7.

[0036] As a preferred technical solution, a groove 39 is vertically opened on the other side of the second connecting plate 30 and passes through the stop block 22. A push block 24 is fixedly connected to the side of the switch door 6 close to the stop block 22, and the push block 24 is slidably connected in the groove 39. The push block 24 abuts against the top of the stop rod 23, and the cross-sectional area of ​​the groove 39 is smaller than the cross-sectional area of ​​the stop rod 23. Specifically, the push block 24 moves down with the switch door 6. When the push block 24 abuts against the top of the stop rod 23, the push block 24 drives the stop rod 23 to move down. When the top of the push rod is horizontally flush with the bottom of the switch door 6, the second connecting plate 30 drives the stop block 22 to move to the initial position through the elastic deformation of the third spring 32. In the process of the push block 24 abutting against the top of the stop rod 23, the first abutting block 21 has moved past the inner side of the switch door 6 and will not abut against the stop block 22. The cross-sectional area of ​​the groove 39 is smaller than the cross-sectional area of ​​the stop rod 23 to prevent the push rod from passing through the groove 39.

[0037] Working principle: The electric push rod 10 of the high-purity potassium sulfate tail gas environmental protection treatment system drives the first connecting plate 11 to move up, and the first connecting plate 11 drives the two first racks 12 to move up, so that the two first racks 12 are meshed with the two first gears 13 to achieve reverse rotation of the two baffles 9. When the two baffles 9 rotate to the horizontal, the tail gas below is blocked, which is convenient for the subsequent replacement of the upper adsorbent to avoid leakage of the unadsorbed tail gas. The first connecting plate 11 continues to move up. At this time, the two first racks 12 are no longer meshed with the two first gears 13, and the two baffles 9 remain horizontal. The second rack 14 moves up and The second gear 16 is meshed to drive the screw 28 to rotate, and through the spiral transmission, the second slider 29 is driven to move along the length direction of the screw 28, so that the frame 7 can move toward the switch door 6. When the frame 7 moves toward the switch door 6, the switch door 6 is pushed to move vertically upward along the guide groove 35 through the swing rod 38, so that the frame 7 moves to the top of the collection box 4. When the stopper 22 abuts against the first abutting block 21, the frame 7 and the supporting filter plate 8 are relatively displaced, and the adsorbent on the supporting filter plate 8 falls into the collection box 4, which is convenient for the subsequent treatment of the saturated adsorbent, and when the adsorbent on the supporting filter plate 8 After all the reagents fall into the collection box 4, the top of the switch door 6 slides and abuts against the second abutting block 34, and the second connecting plate 30 is moved in the direction away from the switch door 6 through the second abutting block 34, so that the stopper 22 and the first abutting block 21 are no longer abutted. At this time, the connecting block 25 drives the blocking rod 23 to move vertically upward through the elastic deformation of the second spring 27. At this time, the peripheral side surface of the blocking rod 23 abuts against one side of the block 22 to prevent the block 22 from resetting in advance and blocking the resetting of the frame 7. The elastic deformation of the first spring 18 drives the filter plate 8 to move horizontally toward the collection box 4 until the filter plate 8 is moved. When the push block 24 contacts the top of the stop rod 23, the push block 24 drives the stop rod 23 to move downward. When the top of the top rod is flush with the bottom of the switch door 6, the second connecting plate 30 drives the stop block 22 to move to the initial position through the elastic deformation of the third spring 32, so that the replacement and collection of the adsorbent can be completed without stopping the machine, and the difficulty of replacing the adsorbent is reduced, and the purification efficiency of the exhaust gas generated during the production of potassium sulfate is improved.

[0038] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-purity potassium sulfate tail gas environmental treatment system, comprising a tower body (1), wherein two baffles (9) are connected in a counter-rotating manner in the tower body (1), a switch door (6) is vertically slidably connected to one side of the tower body (1), a collecting box (4) is provided on one side of the tower body (1), two guide rails (5) are symmetrically provided in the tower body (1), a frame (7) is slidably connected to the two guide rails (5), a first slider (20) is horizontally slidably connected in the frame (7) through an elastic component, a bearing filter plate (8) for bearing an adsorbent and a first abutting block (21) are respectively fixedly connected on both sides of the first slider (20), a block (22) is horizontally slidably connected in the tower body (1), and when the first abutting block (21) slides toward the switch door (6), there is an abutting station abutting against the block (22), characterized in that: Also includes: The transmission assembly drives the frame (7) to move toward the switch door (6) when the two baffles (9) rotate to be flush with each other. A linkage assembly, which is driven by the frame (7) during the sliding process to move the switch door (6) upward; The trigger assembly is driven by the upward movement of the switch door (6) to slide the stopper (22) and to separate the first abutment block (21) from the abutment position.

2. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 1, characterized in that: Two rotating shafts (15) are connected in counter-rotation in the tower body (1), the two baffles (9) and the two rotating shafts (15) are sleeved one-to-one, one end of the two rotating shafts (15) is coaxially fixedly connected with a first gear (13), a first connecting plate (11) is vertically slidably connected in the tower body (1), both sides of the first connecting plate (11) are provided with first racks (12), and the two first racks (12) are meshed and connected with the two first gears (13) one-to-one.

3. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 2, characterized in that: The transmission assembly comprises a second rack (14), a second gear (16) meshing with the second rack (14), a screw (28) and a second slider (29); the second rack (14) is fixedly connected to the top of the first connecting plate (11); the screw (28) is rotatably connected in a guide rail (5) close to the first connecting plate (11); the second slider (29) is slidably connected in the guide rail (5) close to the first connecting plate (11); the second gear (16) is coaxially fixedly connected to one end of the screw (28); the top of the second slider (29) is fixedly connected to the bottom of the frame (7); and the slider is threadedly connected to the screw (28).

4. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 1, characterized in that: The linkage assembly comprises two connecting columns (37) and a swing rod (38). The two connecting columns (37) are respectively arranged on one side of the switch door (6) and the frame (7). The two ends of the swing rod (38) are respectively rotatably sleeved with the two connecting columns (37). A guide groove (35) is vertically opened in the tower body (1), and the switch door (6) is vertically slidably connected in the guide groove (35).

5. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 1, characterized in that: The elastic component comprises a guide rod (17) and a first spring (18), wherein the first spring (18) is sleeved on the guide rod (17), a first slide groove (19) is provided on one side of the frame (7), the guide rod (17) is horizontally arranged in the first slide groove (19), the first slider (20) is slidably sleeved on the guide rod (17), and two ends of the first spring (18) are respectively fixedly connected to the first slider (20) and the bottom wall of the first slide groove (19).

6. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 1, characterized in that: The trigger assembly comprises a second connecting plate (30) and a second abutting block (34); a third sliding groove (33) is provided in the tower body (1); the blocking block (22) is slidably connected in the third sliding groove (33); the second connecting plate (30) is arranged between the blocking plate (9) and the second abutting block (34); an end of the second abutting block (34) close to the switch door (6) is inclined; and the second abutting block (34) is slidably abutted against the switch door (6).

7. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 6, characterized in that: A second telescopic rod (31) is provided between the groove wall of the third sliding groove (33) and one side of the second connecting plate (30), a third spring (32) is sleeved on the second telescopic rod (31), and two ends of the third spring (32) are respectively fixedly connected to the second connecting plate (30) and the groove wall of the third sliding groove (33).

8. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 7, characterized in that: A second sliding groove (36) is vertically opened in the tower body (1), a connecting block (25) is slidably connected in the second sliding groove (36), a first telescopic rod (26) is provided at the bottom of the connecting block (25), a second spring (27) is sleeved on the first telescopic rod (26), a blocking rod (23) is provided at the top of the connecting block (25), and the top end of the blocking rod (23) is abutted against the bottom of the blocking block (22).

9. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 8, characterized in that: A groove (39) is vertically formed on the other side of the second connecting plate (30) and passes through the stop block (22); a push block (24) is fixedly connected to the side of the switch door (6) close to the stop block (22); the push block (24) is slidably connected in the groove (39); the push block (24) is abutted against the top end of the stop rod (23); and the cross-sectional area of ​​the groove (39) is smaller than the cross-sectional area of ​​the stop rod (23).

10. A high-purity potassium sulfate tail gas environmental protection treatment system according to claim 2, characterized in that: An electric push rod (10) is arranged inside the tower body (1), and an output end of the electric push rod (10) is fixedly connected to the bottom of a first connecting plate (11).

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