A tail gas treatment device for electronic-grade sulfuric acid production

Abstract

This utility model relates to a tail gas treatment device for electronic-grade sulfuric acid production, applied in the field of tail gas treatment technology. Before treating the tail gas from electronic-grade sulfuric acid production, the filter element is threadedly connected to a collar via a threaded ring. Then, by holding the handle, a sealing cap with a sealing plug is inserted into the bottom of the filter element for threaded connection, sealing the bottom of the filter element. Next, the collar is pushed upwards, causing the top of the filter element to engage with the bottom of the air duct. The filter element is then installed inside the outer cover. At this point, the liquid collection box can be fixed by engaging and attracting the corresponding second locking block through a second locking groove. This allows any liquid generated during filtration to flow down the side wall and fall into the liquid collection box, preventing dripping onto the worktable. The controller can then drive a first servo motor to move and adjust the position of the outer cover, facilitating tail gas filtration and achieving convenient disassembly and replacement without the aid of any auxiliary tools.

Description

Technical Field

[0001] This utility model relates to a tail gas treatment device, and in particular to a tail gas treatment device for electronic-grade sulfuric acid production applied in the field of tail gas treatment technology. Background Technology

[0002] The production of electronic-grade sulfuric acid generates tail gases containing harmful gases such as sulfur dioxide and sulfur trioxide. If these tail gases are emitted directly without effective treatment, they will not only cause serious air pollution and harm human health, but may also lead to environmental problems such as acid rain.

[0003] Chinese patent CN218106749U discloses an electronic-grade sulfuric acid low-temperature evaporation purification absorption device. This utility model is equipped with a second servo motor, a drive motor, a filter element, and a lifting block, which achieves the purpose of tail gas treatment and solves the problem that existing absorption devices do not have tail gas treatment functions, resulting in exhaust gas emissions causing air pollution.

[0004] While the aforementioned patent achieves the goal of exhaust gas treatment and solves the problem that existing absorption devices do not have exhaust gas treatment functions, the filter element needs to be cleaned and replaced after a period of use, otherwise the exhaust gas filtration effect will be affected. Moreover, the filter element in the aforementioned patent is very troublesome to replace and clean each time, which takes a long time. Utility Model Content

[0005] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that the filter element needs to be cleaned and replaced after a period of use, otherwise the effect of exhaust gas filtration will be affected. However, the filter element in the above-mentioned patent is very troublesome to replace and clean each time, which takes a long time.

[0006] To address the aforementioned problems, this utility model provides a tail gas treatment device for electronic-grade sulfuric acid production, comprising a workbench, a support rod fixedly connected to the top of the workbench, an outer cover movably connected to the support rod, a duct fixedly connected to the top of the outer cover, and an exhaust fan installed between the outer cover and the duct. Multiple second sliding grooves are equidistantly arranged in an annular pattern on the inner wall of the outer cover, and a buffer guide rail is fixedly connected within each second sliding groove. A collar is slidably connected to the buffer guide rail via a slider. A filter element is detachably connected to the middle of the collar, and a threaded ring is fixedly connected to the top of the filter element. A sealing ring is fitted on the surface of the threaded ring, and the threaded ring is threadedly connected to the inner wall of the collar. A sealing cap with a sealing plug is threadedly connected to the bottom of the filter element, and handles are symmetrically fixedly connected to the bottom of the sealing cap. A liquid collection box is detachably connected to the bottom of the outer cover, and multiple second locking blocks are equidistantly arranged in an annular pattern on the bottom cross-section of the outer cover. Multiple second locking slots are equidistantly arranged in an annular pattern on the top cross-section of the liquid collection box, and the inner walls of the second locking slots and the second locking blocks are both made of magnetic material and attract each other.

[0007] In the aforementioned exhaust gas treatment device, an adjustable collar is provided inside the outer cover, which facilitates the installation of the filter element on the collar and then adjusting its height before installing it inside the outer cover, thus achieving convenient disassembly and replacement without the aid of any auxiliary tools.

[0008] As a further improvement of this application, a first sliding groove is provided at one end of the support rod near the outer cover, a lead screw is rotatably connected to the inner wall of the first sliding groove, a first servo motor is fixedly connected to the top of the support rod, and the output end of the first servo motor is connected to the lead screw.

[0009] As a further improvement of this application, a second servo motor is detachably connected to the bottom end of the sealing cover. A groove is provided in the middle of the bottom end of the sealing cover. A sleeve with a first card block is fitted on the surface of the second servo motor. The first card block and the inner wall of the groove are both made of magnetic material and attract each other.

[0010] As a further improvement of this application, the output end of the second servo motor is connected to a connecting shaft, and an L-shaped cleaning brush is fixedly connected to the side wall of the connecting shaft, and the L-shaped cleaning brush is in contact with the surface of the filter element.

[0011] As another improvement of this application, a set of screw holes are symmetrically opened on the ferrule and the sealing cover respectively, and the ferrule and the sealing cover are fitted together and fixed by screw threads.

[0012] As a further improvement to this application, a dust collection hood is detachably connected to the bottom of the outer cover. The top section of the dust collection hood is provided with a plurality of first slots with the same structure as the second slot, and the first slots and the second slots engage and attract each other.

[0013] As a further improvement to this application, a controller for controlling the first servo motor, the second servo motor, and the exhaust fan is fixedly connected to the workbench.

[0014] In summary, before treating the tail gas from electronic-grade sulfuric acid production, the filter element is connected to the collar via a threaded ring. Then, by holding the handle, the sealing cap with the sealing plug is inserted into the bottom of the filter element for threaded connection, sealing the bottom of the filter element. Next, the collar is pushed upwards to drive the filter element upwards, so that the top of the filter element is engaged with the bottom of the air duct and connected to it. At this point, the filter element is installed inside the outer cover. The liquid collection box can then be fixed by engaging and attracting the corresponding second block through the second slot. This allows any liquid generated during filtration to flow down the side wall and fall into the liquid collection box, preventing it from dripping onto the worktable. The controller can then drive the first servo motor to move and adjust the position of the outer cover, thus facilitating the filtration of the tail gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the filter element installation of the exhaust gas treatment device according to the first embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of the filter element according to the first embodiment of this application;

[0017] Figure 3 For this application Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the filter element installation according to the first and second embodiments of this application;

[0019] Figure 5 This is a schematic diagram of the installation of the L-shaped cleaning brush according to the second embodiment of this application;

[0020] Figure 6 This is a schematic diagram of the mounting structure of the second servo motor and the sealing cover according to the second embodiment of this application;

[0021] Figure 7 This is a schematic diagram of the bottom of the outer cover according to the second embodiment of this application.

[0022] Explanation of the labels in the diagram:

[0023] 1. Workbench; 2. Support rod; 3. First servo motor; 4. First slide rail; 5. Outer cover; 6. Air duct; 8. Exhaust fan; 9. Second slide rail; 10. Collar; 11. Slider; 12. Filter element; 13. Threaded ring; 14. Dust collection cover; 15. First slot; 16. Buffer guide rail; 17. Sealing cover; 18. Handle; 19. Groove; 20. Sleeve; 21. Second servo motor; 22. Connecting shaft; 23. L-shaped cleaning brush; 24. First locking block; 25. Sealing plug; 26. Screw; 27. Second locking block; 28. Liquid collection box; 29. ​​Second slot. Detailed Implementation

[0024] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0025] First implementation method:

[0026] Figures 1-4 and Figure 7This invention discloses a tail gas treatment device for electronic-grade sulfuric acid production, comprising a workbench 1, a support rod 2 fixedly connected to the top of the workbench 1, an outer cover 5 movably connected to the support rod 2, a ventilation duct 6 fixedly connected to the top of the outer cover 5, and an exhaust fan 8 installed between the outer cover 5 and the ventilation duct 6. Multiple second sliding grooves 9 are equidistantly spaced in a ring on the inner wall of the outer cover 5, and a buffer guide rail 16 is fixedly connected within each second sliding groove 9. A collar 10 is slidably connected to the buffer guide rail 16 via a slider 11. A filter element 12 is detachably connected to the middle of the collar 10, and the top of the filter element 12 is fixedly connected to... There is a threaded ring 13, and a sealing ring is fitted on the surface of the threaded ring 13. The threaded ring 13 is threadedly connected to the inner wall of the collar 10. The bottom end of the filter element 12 is threadedly connected to a sealing cap 17 with a sealing plug 25. The bottom end of the sealing cap 17 is symmetrically fixedly connected to a handle 18. The bottom end of the outer cover 5 is detachably connected to a liquid collection box 28. The bottom section of the outer cover 5 is fixedly connected with multiple second locking blocks 27 at equal intervals in an annular shape. The top section of the liquid collection box 28 is provided with multiple second locking slots 29 at equal intervals in an annular shape. The inner wall of the second locking slots 29 and the second locking blocks 27 are both made of magnetic material and attract each other.

[0027] The support rod 2 has a first groove 4 at one end near the outer cover 5. A lead screw is rotatably connected to the inner wall of the first groove 4. A first servo motor 3 is fixedly connected to the top of the support rod 2, and the output end of the first servo motor 3 is connected to the lead screw. A controller for controlling the first servo motor 3, the second servo motor 21 and the exhaust fan 8 is fixedly connected on the workbench 1.

[0028] Working principle: Before treating the tail gas from electronic-grade sulfuric acid production, filter element 12 is threadedly connected to collar 10 via threaded ring 13. Then, by holding handle 18, the sealing cap 17 with sealing plug 25 is inserted into the bottom of filter element 12 for threaded connection, thereby sealing the bottom of filter element 12. Then, collar 10 is pushed upward to drive filter element 12 upward, so that the top of filter element 12 is engaged with the bottom of air duct 6 and connected to it. At this time, filter element 12 is installed inside outer cover 5. At this time, liquid collection box 28 can be engaged and fixed by second slot 29 and corresponding second block 27. If liquid is generated during filtration, it can fall into liquid collection box 28 along the side wall, avoiding dripping onto workbench 1. At this time, the controller can drive the first servo motor 3 to move and adjust the position of outer cover 5, thereby facilitating tail gas filtration.

[0029] This utility model provides an adjustable collar 10 inside the outer cover 5, which facilitates the installation of the filter element 12 onto the collar 10 and then adjusting its height before installing it inside the outer cover 5, thus achieving convenient disassembly and replacement without the aid of any auxiliary tools.

[0030] Second implementation method:

[0031] Figures 4-6The bottom of the sealing cover 17 is detachably connected to a second servo motor 21. A groove 19 is provided in the middle of the bottom of the sealing cover 17. A sleeve 20 with a first locking block 24 is fitted on the surface of the second servo motor 21. The first locking block 24 and the inner wall of the groove 19 are both made of magnetic material and attract each other. The output end of the second servo motor 21 is connected to a connecting shaft 22. An L-shaped cleaning brush 23 is fixedly connected to the side wall of the connecting shaft 22 and contacts the surface of the filter element 12. A set of screw holes are symmetrically provided on the sleeve 20 and the sealing cover 17. The sleeve 20 and the sealing cover 17 are fitted together and fixed by screws 26. A dust collection cover 14 is detachably connected to the bottom of the outer cover 5. The top section of the dust collection cover 14 has a plurality of first slots 15 with the same structure as the second slot 29. The first slots 15 engage with the second locking block 27 and attract each other.

[0032] Working principle: When cleaning the filter element 12 instead of replacing it, the second servo motor 21 with the L-shaped cleaning brush 23 is connected to the output end. The first locking block 24 on the sleeve 20 engages with the groove 19 and attracts each other for initial positioning. Then, the screw 26 is fixed to the screw hole thread, thereby reinforcing the second servo motor 21 and the sealing cover 17. At this time, the second servo motor 21 is located inside the outer cover 5, and the L-shaped cleaning brush 23 is in contact with the surface of the filter element 12. Then, the dust collection cover 14 is engaged with the second locking block 27 through the first slot 15 and attracted to each other, thereby sealing the outer cover 5. At this time, the controller can be used to turn on the second servo motor 21 to drive the threaded ring 13 to clean the surface of the filter element 12. The cleaned dust and particles fall into the dust collection cover 14. After cleaning, it can be disassembled and cleaned.

[0033] This invention, by providing a detachable second servo motor 21 and installing an L-shaped cleaning brush 23 at the output end of the second servo motor 21, can clean the surface of the filter element 12 without disassembling it, thereby extending the service life of the filter element 12.

[0034] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A tail gas treatment device for electronic-grade sulfuric acid production, comprising a workbench (1), characterized in that: The workbench (1) is fixedly connected to a support rod (2) at its top. An outer cover (5) is movably connected to the support rod (2). A duct (6) is fixedly connected to the top of the outer cover (5). An exhaust fan (8) is installed between the outer cover (5) and the duct (6). Multiple second sliding grooves (9) are equidistantly arranged in a ring on the inner wall of the outer cover (5). A buffer guide rail (16) is fixedly connected in the second sliding groove (9). A collar (10) is slidably connected to the buffer guide rail (16) via a slider (11). A filter element (12) is detachably connected to the middle of the collar (10). A threaded ring (13) is fixedly connected to the top of the filter element (12). The threaded ring (13) is fitted with a sealing ring on its surface, and the threaded ring (13) is threadedly connected to the inner wall of the collar (10). The bottom end of the filter element (12) is threadedly connected to a sealing cap (17) with a sealing plug (25). The bottom end of the sealing cap (17) is symmetrically fixedly connected with a handle (18). The bottom end of the outer cover (5) is detachably connected to a liquid collection box (28). The bottom section of the outer cover (5) is fixedly connected with multiple second locking blocks (27) at equal intervals in an annular shape. The top section of the liquid collection box (28) is provided with multiple second locking slots (29) at equal intervals in an annular shape. The inner wall of the second locking slot (29) and the second locking block (27) are both made of magnetic material and attract each other.

2. The tail gas treatment device for electronic-grade sulfuric acid production according to claim 1, characterized in that: The support rod (2) has a first groove (4) at one end near the outer cover (5). A lead screw is rotatably connected to the inner wall of the first groove (4). A first servo motor (3) is fixedly connected to the top of the support rod (2), and the output end of the first servo motor (3) is connected to the lead screw.

3. The tail gas treatment device for electronic-grade sulfuric acid production according to claim 1, characterized in that: The bottom end of the sealing cover (17) is detachably connected to a second servo motor (21). A groove (19) is provided in the middle of the bottom end of the sealing cover (17). A sleeve (20) with a first card block (24) is fitted on the surface of the second servo motor (21). The first card block (24) and the inner wall of the groove (19) are both made of magnetic material and attract each other.

4. The tail gas treatment device for electronic-grade sulfuric acid production according to claim 3, characterized in that: The output end of the second servo motor (21) is connected to a connecting shaft (22), and an L-shaped cleaning brush (23) is fixedly connected to the side wall of the connecting shaft (22), and the L-shaped cleaning brush (23) is in contact with the surface of the filter element (12).

5. The tail gas treatment device for electronic-grade sulfuric acid production according to claim 3, characterized in that: The sleeve (20) and the sealing cap (17) are respectively provided with a set of screw holes symmetrically, and the sleeve (20) and the sealing cap (17) are fitted together and fixed by screws (26).

6. The tail gas treatment device for electronic-grade sulfuric acid production according to claim 1, characterized in that: The bottom of the outer cover (5) is detachably connected to a dust collection cover (14). The top section of the dust collection cover (14) is provided with a plurality of first slots (15) with the same structure as the second slot (29) at equal intervals. The first slots (15) and the second slot (27) are engaged and attracted to each other.

7. The tail gas treatment device for electronic-grade sulfuric acid production according to claim 3, characterized in that: The workbench (1) is fixedly connected to a controller that controls the first servo motor (3), the second servo motor (21), and the exhaust fan (8).

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