Novel acid waste gas treatment equipment

Abstract

According to the novel acid waste gas treatment equipment, due to the fact that the first filtering assembly is additionally arranged for filtering, and acid waste gas can be decelerated and evenly distributed after passing through the first filtering assembly, the acid waste gas can be combined with spray formed by an alkaline solution more sufficiently, and therefore the purification treatment effect is better; a solution falling into the bottom of the tank body can be pumped into a second cavity in the box body through a connecting pump, and liquid in the second cavity can enter the first cavity through filtration of a second filtering assembly, so that the alkaline solution can be repeatedly used; after the first filtering assembly and the second filtering assembly are dirty, the first filtering assembly can be pulled out from the first sliding groove, and the second filtering assembly can be pulled out from the second sliding groove, so that the first filtering assembly and the second filtering assembly can be conveniently taken out for cleaning and replacement; in general, the novel acid waste gas treatment equipment is better in treatment effect, the alkaline solution can be recycled, and the first filter assembly and the second filter assembly are convenient to clean and replace.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a novel acidic waste gas treatment device. Background Technology

[0002] Waste gas treatment, also known as waste gas purification, mainly refers to the treatment of industrial waste gases generated in industrial sites, such as particulate matter, flue gas, odorous gases, and toxic and harmful gases. Common waste gas purification methods include factory flue gas purification, workshop dust gas purification, organic waste gas purification, waste gas odor purification, acid and alkali waste gas purification, and chemical waste gas purification.

[0003] Taking acidic waste gas as an example, existing acidic waste gas treatment equipment often encounters the following problems during use. Specifically: First, the commonly used purification method on the market is to pass the acidic waste gas into a spray tower that can spray alkaline solution to purify the acidic waste gas through a neutralization reaction. However, the gas flow rate is too fast, which cannot ensure that the acidic waste gas and alkaline spray can fully combine and react, resulting in poor treatment effect. Second, the solution falling to the bottom of the spray tower often retains a certain degree of alkalinity, but this part of the liquid is usually treated as waste liquid during the treatment process, which will cause a waste of resources. Third, some treatment equipment also has solid filter media, but they are difficult to remove and place, and are not convenient to remove for cleaning and replacement after they become dirty. Utility Model Content

[0004] Technical problems to be solved

[0005] To address the above problems, this invention provides a novel acidic waste gas treatment device with better treatment effect, recyclable alkaline solution, and easy-to-clean and replace filter components.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A novel acidic waste gas treatment device includes:

[0009] The tank body has a first sliding groove on its side;

[0010] The first filter assembly is slidably connected in the first chute. The first filter assembly can divide the interior of the tank into an upper chamber located above and a lower chamber located below. The lower chamber is provided with an air inlet for inputting acidic waste gas, and the upper chamber is provided with an air outlet for discharging the treated gas.

[0011] The box body has a second sliding groove on its top, and the interior of the box body contains an alkaline solution;

[0012] The second filter assembly is slidably connected in the second slide groove, and the second filter assembly can divide the interior of the box into a first chamber away from the tank and a second chamber close to the tank;

[0013] A spray assembly, one end of which is inserted into the alkaline solution in the first chamber, and the other end is located in the upper chamber of the tank, which can spray alkaline solution toward the first filter assembly;

[0014] A demister is disposed in the upper chamber, located between the spray assembly above and the air outlet below, and is used to dehumidify the treated gas.

[0015] A pump is connected, with one end connected to the bottom of the lower chamber and the other end connected to the top of the second chamber, which can pump the solution in the lower chamber into the second chamber.

[0016] Preferably, the tank comprises:

[0017] The tank body has an opening at the top, and both the upper chamber and the lower chamber are located inside the tank body. The upper chamber has an annular convex edge, and the demister is placed on the annular convex edge.

[0018] The can lid is detachably connected to the top of the can body. After the can lid is connected to the can body, it can press the demister tightly. The air outlet is provided on the can lid.

[0019] Preferably, the first filtering component includes:

[0020] A first frame, wherein the middle part of the first frame is provided with a first through hole corresponding to the upper chamber and the lower chamber, and the end of the first frame away from the tank body is provided with a first handle;

[0021] The first primary filter screen is disposed inside the first through hole, and there is a gap between the first primary filter screen and the end of the first through hole to prevent impurities on the first primary filter screen from being scratched during the movement of the first filter assembly.

[0022] The first medium-efficiency filter is disposed inside the first through hole and above the first primary filter.

[0023] A first high-efficiency filter is disposed inside the first through hole and above the first medium-efficiency filter. There is a gap between the first high-efficiency filter and the end of the first through hole to prevent impurities on the first high-efficiency filter from being scratched during the movement of the first filter assembly.

[0024] Preferably, a first magnetic element is provided at the opening of the first chute, and a second magnetic element corresponding to the first magnetic element is provided on the first frame. The tank and the first frame can be magnetically connected by the cooperation of the first magnetic element and the second magnetic element.

[0025] Preferably, the second filtering component includes:

[0026] The second frame has a second through hole in the middle corresponding to the first chamber and the second chamber, and a second handle is provided at the end of the second frame away from the tank body;

[0027] The second primary filter is disposed inside the second through hole, and there is a gap between the end of the second primary filter and the second through hole to prevent impurities on the second primary filter from being scratched during the movement of the second filter assembly.

[0028] The second medium-efficiency filter is disposed inside the second through hole and located on the side of the second primary filter away from the tank body;

[0029] The second high-efficiency filter is disposed inside the second through hole and on the side of the second medium-efficiency filter away from the tank body. There is a gap between the end of the second high-efficiency filter and the second through hole to prevent impurities on the second high-efficiency filter from being scratched during the movement of the second filter assembly.

[0030] Preferably, the spray assembly includes:

[0031] A delivery pump, one end of which is inserted into the alkaline solution in the first chamber, and the other end is located in the upper chamber of the tank;

[0032] A spray head, connected to the delivery pump at one end of the upper chamber, can spray an alkaline solution toward the first filter assembly.

[0033] Preferably, the first chamber is provided with a stirring mechanism, which includes two stirring components. The rotating shafts of the stirring components are both located in a horizontal plane for mixing solutions of different heights. The rotating shafts of the stirring components are both perpendicular to the plane where the second filter component is located to prevent the solution being stirred in the first chamber from passing through the second filter component and entering the second chamber. The rotating shafts of the two stirring components rotate in opposite directions so that the solution in the first chamber can be quickly and thoroughly mixed evenly.

[0034] Preferably, the stirring assembly includes:

[0035] An electric motor is disposed on the side of the housing away from the tank body;

[0036] A rotating shaft, one end of which is connected to the motor, and the other end of which is located inside the first chamber. The rotating shaft is located in a horizontal plane and perpendicular to the plane where the second filter assembly is located.

[0037] Multiple stirring rods are provided, and all of the stirring rods are mounted on the rotating shaft.

[0038] Preferably, the top of the housing is provided with a liquid inlet communicating with the first chamber, the bottom of the housing is provided with a liquid outlet with a valve communicating with the first chamber, the bottom of the lower chamber is inclined so that the liquid in the lower chamber can be discharged through the connecting pump, and the bottom of the first chamber is inclined so that the liquid in the first chamber can be discharged through the liquid outlet.

[0039] Preferably, the air outlet of the air inlet is positioned downwards to prevent liquid from entering the interior of the air inlet.

[0040] (III) Beneficial Effects

[0041] Compared with the prior art, the beneficial effects of this utility model are:

[0042] In actual use, acidic waste gas is introduced into the lower chamber of the tank through the air inlet. As the acidic waste gas spreads from the lower chamber to the upper chamber, the first filter assembly physically filters and purifies it. The spray assembly extracts an alkaline solution from the first chamber and sprays it into the upper chamber, thereby chemically neutralizing and purifying the acidic waste gas and rinsing the first filter assembly. Afterwards, the demister dehumidifies the treated gas, and the dehumidified gas is finally discharged from the tank through the air outlet. Due to the addition of the first filter assembly as a secondary filtration element, and because the acidic waste gas is slowed down and evenly distributed after passing through the first filter assembly, the acidic waste gas can... The spray formed with the alkaline solution combines more thoroughly, resulting in better purification. A connecting pump draws the solution falling to the bottom of the tank into the second chamber within the container. The liquid in the second chamber can then pass through the second filter assembly into the first chamber, allowing the alkaline solution to be reused. When the first and second filter assemblies become dirty, the first filter assembly can be pulled out from the first chute, and the second filter assembly can be pulled out from the second chute, facilitating cleaning and replacement. In summary, the novel acidic waste gas treatment equipment of this application offers better treatment results, allows for the recycling of the alkaline solution, and facilitates the cleaning and replacement of the first and second filter assemblies. Attached Figure Description

[0043] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0044] Figure 1 A perspective view of the novel acidic waste gas treatment equipment of this utility model is shown;

[0045] Figure 2 It shows Figure 1 A three-dimensional view of a vertical cross-section of a novel acidic waste gas treatment device;

[0046] Figure 3 It shows Figure 2 Enlarged view of part A in the image;

[0047] Figure 4 It shows Figure 2 Enlarged view of part B in the image;

[0048] Figure 5 It shows Figure 2 Enlarged view of section C in the image;

[0049] Figure 6 It shows Figure 1 A three-dimensional view of the new type of acidic waste gas treatment equipment from another angle;

[0050] Figure 7 It shows Figure 1 Partial 3D view of a novel acidic waste gas treatment equipment;

[0051] Figure 8 It shows Figure 1 A three-dimensional view of a vertical cross-section of the middle box;

[0052] Figure 9 It shows Figure 1 A 3D view of the first filter component.

[0053] In the diagram: 1. Tank body; 11. First chute; 12. Upper chamber; 13. Lower chamber; 14. Air inlet; 15. Air outlet; 16. Tank body; 17. Tank lid; 18. Annular flange; 19. First magnetic component; 2. First filter assembly; 21. First frame; 22. First primary filter; 23. First medium-efficiency filter; 24. First high-efficiency filter; 25. First through hole; 26. First handle; 27. Second magnetic component; 3. Box body; 31. Second chute; 32. First chamber 33. Second chamber; 34. Liquid inlet; 35. Liquid outlet; 4. Second filter assembly; 41. Second frame; 42. Second primary filter screen; 43. Second medium-efficiency filter screen; 44. Second high-efficiency filter screen; 45. Second through hole; 46. Second handle; 5. Spray assembly; 51. Transfer pump; 52. Spray head; 6. Demister; 7. Connecting pump; 8. Stirring mechanism; 81. Stirring assembly; 811. Motor; 812. Rotating shaft; 813. Stirring rod; 9. Acid-base detector. Detailed Implementation

[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0055] See appendix Figure 1 - Appendix Figure 9This utility model discloses a novel acidic waste gas treatment device, including a tank 1, a first filter assembly 2, a housing 3, a second filter assembly 4, a spray assembly 5, a demister 6, and a connecting pump 7. The tank 1 has a first slid groove 11 on its side. The first filter assembly 2 is slidably connected within the first slid groove 11, dividing the interior of the tank 1 into an upper chamber 12 and a lower chamber 13. The lower chamber 13 has an inlet 14 for inputting acidic waste gas, and the upper chamber 12 has an outlet 15 for discharging treated gas. The top of the housing 3 has a second slid groove 31, and the interior of the housing 3 contains an alkaline solution. The second filter assembly 4... Component 4 is slidably connected in the second slide 31. The second filter component 4 can divide the interior of the box 3 into a first chamber 32 away from the tank 1 and a second chamber 33 close to the tank 1. One end of the spray component 5 is inserted into the alkaline solution in the first chamber 32, and the other end is located in the upper chamber 12 of the tank 1. It can spray alkaline solution toward the first filter component 2. The demister 6 is set in the upper chamber 12. The demister 6 is located between the spray component 5 and the outlet 15. It can dehumidify the treated gas. One end of the pump 7 is connected to the bottom of the lower chamber 13, and the other end is connected to the top of the second chamber 33. It can draw the solution in the lower chamber 13 into the second chamber 33.

[0056] In actual use, acidic waste gas is introduced into the lower chamber 13 of the tank 1 through the air inlet 14. As the acidic waste gas spreads from the lower chamber 13 to the upper chamber 12, the first filter assembly 2 physically filters and purifies the gas. The spray assembly 5 extracts an alkaline solution from the first chamber 32 and sprays it into the upper chamber 12, thereby chemically neutralizing and purifying the acidic waste gas and rinsing the first filter assembly 2. Afterwards, the demister 6 dehumidifies the treated gas, and the dehumidified gas is finally discharged from the tank 1 through the air outlet 15. Due to the addition of the first filter assembly 2 as a secondary filter, and because the acidic waste gas is slowed down and evenly distributed after passing through the first filter assembly 2, the acidic waste gas can... The spray formed by the alkaline solution combines more thoroughly, resulting in better purification. The connected pump 7 draws the solution falling to the bottom of the tank 1 into the second chamber 33 inside the housing 3. The liquid in the second chamber 33 can be filtered by the second filter assembly 4 and enter the first chamber 32, allowing the alkaline solution to be reused. When the first filter assembly 2 and the second filter assembly 4 become dirty, the first filter assembly 2 can be pulled out from the first chute 11, and the second filter assembly 4 can be pulled out from the second chute 31, facilitating cleaning and replacement. In summary, the novel acidic waste gas treatment equipment of this application has better treatment effect, the alkaline solution can be recycled, and the first filter assembly 2 and the second filter assembly 4 are easy to clean and replace.

[0057] It should be noted that the top of the solution at the bottom of the lower chamber 13 should be higher than the connection point between the pump 7 and the lower chamber 13 to prevent acidic waste gas from directly entering the second chamber 33 inside the housing 3.

[0058] See appendix Figure 2 and attached Figure 6 Furthermore, an acid-base detector 9 can be installed on the side of the housing 3, and the detection part of the acid-base detector 9 can be inserted into the liquid in the first chamber 32 to avoid continued use after the treatment liquid has failed.

[0059] See appendix Figure 1 Appendix Figure 2 and attached Figure 7 To facilitate the replacement of the demister 6, the following design is implemented in this embodiment. Specifically, the tank body 1 includes a tank body 16 and a tank cover 17. The top of the tank body 16 is open. The upper chamber 12 and the lower chamber 13 are both located inside the tank body 16. The upper chamber 12 is provided with an annular protrusion 18, and the demister 6 is placed on the annular protrusion 18. The tank cover 17 is detachably connected to the top of the tank body 16. After the tank cover 17 is connected to the tank body 16, it can press the demister 6 tightly. The air outlet 15 is provided on the tank cover 17.

[0060] See appendix Figure 2 Appendix Figure 3 and attached Figure 9 There are various structures capable of filtering gases. This embodiment describes one such structure. Specifically, the first filter assembly 2 includes a first frame 21, a first primary filter 22, a first medium-efficiency filter 23, and a first high-efficiency filter 24. The first frame 21 has a first through hole 25 in the middle corresponding to the upper chamber 12 and the lower chamber 13. The end of the first frame 21 away from the tank body 1 has a first handle 26. The first primary filter 22 is disposed inside the first through hole 25. There is a gap between the ends of the first primary filter 22 and the first through hole 25 to prevent impurities on the first primary filter 22 from being scratched during the movement of the first filter assembly 2. The first medium-efficiency filter 23 is disposed inside the first through hole 25 and above the first primary filter 22. The first high-efficiency filter 24 is disposed inside the first through hole 25 and above the first medium-efficiency filter 23. There is a gap between the ends of the first high-efficiency filter 24 and the first through hole 25 to prevent impurities on the first high-efficiency filter 24 from being scratched during the movement of the first filter assembly 2.

[0061] Furthermore, alkaline activated carbon can be filled between the first primary filter 22 and the first medium-efficiency filter 23, and between the first medium-efficiency filter 23 and the first high-efficiency filter 24, to enhance the purification and filtration effect on acidic waste gas.

[0062] See appendix Figure 2 Appendix Figure 7 and attached Figure 9 Furthermore, the following design is also made in this embodiment: Specifically, a first magnetic element 19 is provided at the opening of the first slide groove 11, and a second magnetic element 27 corresponding to the first magnetic element 19 is provided on the first frame 21. The tank body 1 and the first frame 21 can be magnetically connected by the cooperation of the first magnetic element 19 and the second magnetic element 27.

[0063] The design of the above structure can prevent the first filter component 3 from accidentally detaching from the first slide groove 11.

[0064] See appendix Figure 2 and attached Figure 4 There are various structures capable of filtering liquids. This embodiment describes one such structure. Specifically, the second filter assembly 4 includes a second frame 41, a second primary filter 42, a second medium-efficiency filter 43, and a second high-efficiency filter 44. The second frame 41 has a second through hole 45 in the middle corresponding to the first chamber 32 and the second chamber 33. The end of the second frame 41 away from the tank 1 has a second handle 46. The second primary filter 42 is disposed inside the second through hole 45, and there is a gap between the ends of the second primary filter 42 and the second through hole 45 to prevent impurities on the second primary filter 42 from being scratched during the movement of the second filter assembly 4. The second medium-efficiency filter 43 is disposed inside the second through hole 45 and located on the side of the second primary filter 42 away from the tank 1. The second high-efficiency filter 44 is disposed inside the second through hole 45 and located on the side of the second medium-efficiency filter 43 away from the tank 1. There is a gap between the ends of the second high-efficiency filter 44 and the second through hole 45 to prevent impurities on the second high-efficiency filter 44 from being scratched during the movement of the second filter assembly 4.

[0065] See appendix Figure 1 and attached Figure 2 There are many different structures that can achieve the spraying effect. In this embodiment, one type is introduced. Specifically, the spraying assembly 5 includes a delivery pump 51 and a spray head 52. One end of the delivery pump 51 is inserted into the alkaline solution in the first chamber 32, and the other end is located in the upper chamber 12 of the tank body 1. The spray head 52 is connected to the end of the delivery pump 51 located in the upper chamber 12 and can spray the alkaline solution toward the first filter assembly 2.

[0066] Furthermore, the upper chamber 12 can be configured as a cylinder so that the spray from the spray head 52 can be evenly distributed in the upper chamber 12.

[0067] See appendix Figure 6 and attached Figure 8The alkalinity of the solution weakens after use. To ensure a consistent pH level in the solution within the first chamber 32, the following design is implemented in this embodiment: Specifically, a stirring mechanism 8 is provided in the first chamber 32. The stirring mechanism includes two stirring components 81. The rotating shafts 812 of the stirring components 81 are both located in a horizontal plane and are used to mix solutions of different heights. The rotating shafts 812 of the stirring components 81 are perpendicular to the plane where the second filter component 4 is located, in order to prevent the solution being stirred in the first chamber 32 from passing through the second filter component 4 and entering the second chamber 33. The rotating shafts 812 of the two stirring components 81 rotate in opposite directions so that the solution in the first chamber 32 can be quickly and thoroughly mixed evenly.

[0068] See appendix Figure 6 and attached Figure 8 There are many different structures that can achieve a stirring effect. This embodiment introduces one of them. Specifically, the stirring assembly 81 includes a motor 811, a rotating shaft 812, and multiple stirring rods 813. The motor 811 is located on the side of the housing 3 away from the tank 1. One end of the rotating shaft 812 is connected to the motor 811, and the other end is located inside the first chamber 32. The rotating shaft 812 is located in the horizontal plane and is perpendicular to the plane where the second filter assembly 4 is located. Multiple stirring rods 813 are all arranged on the rotating shaft 812.

[0069] See appendix Figure 2 and attached Figure 8 Even if the alkaline solution can be recycled, it will be continuously depleted and eventually become acidic. In order to inject the alkaline solution into the first chamber 32 and discharge the waste liquid in the first chamber 32, the following design is made in this embodiment. Specifically, the top of the box body 3 is provided with an inlet 34 that connects to the first chamber 32, and the bottom of the box body 3 is provided with an outlet 35 with a valve that connects to the first chamber 32. The bottom of the lower chamber 13 is inclined so that the liquid in the lower chamber 13 can be discharged through the connected pump 7. The bottom of the first chamber 32 is inclined so that the liquid in the first chamber 32 can be discharged through the outlet 35.

[0070] See appendix Figure 2 In order to prevent liquid from entering the air inlet 14, the following design is made in this embodiment: specifically, the air outlet of the air inlet 14 is set downward.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0072] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0073] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel acidic exhaust gas treatment apparatus characterized by comprising: The utility model provides a kind of acid gas treatment device, comprising: Tank body, the side of the tank body is equipped with first sliding chute; First filter assembly, the first filter assembly is slidably connected in the first sliding chute, the first filter assembly can divide the inside of tank body into upper chamber located above and lower chamber located below, the lower chamber is equipped with air inlet, for input acidic waste gas, the upper chamber is equipped with air outlet, for discharge treated gas; Box, the top of the box is equipped with second sliding chute, the inside of the box is filled with alkaline solution; Second filter assembly, the second filter assembly is slidably connected in the second sliding chute, the second filter assembly can divide the inside of box into first chamber away from tank body and second chamber close to tank body; Spraying assembly, one end of the spraying assembly is inserted into alkaline solution in the first chamber, the other end is located in the upper chamber of the tank body, and alkaline solution can be sprayed towards the first filter assembly; Demister, the demister is arranged in the upper chamber, and the demister is located between the upper side of the spraying assembly and the lower side of the air outlet, and the treated gas can be dehumidified; Connecting pump, one end of the connecting pump is communicated with the bottom of the lower chamber, and the other end is communicated with the top of the second chamber, and the solution in the lower chamber can be pumped into the second chamber.

2. A novel acidic off-gas treatment apparatus according to claim 1, characterized by The tank body comprises: Tank body, the top of the tank body is open, the upper chamber and the lower chamber are located in the inside of the tank body, the upper chamber is equipped with annular convex edge, and the demister is placed on the annular convex edge; Tank cover, the tank cover is detachably connected on the top of the tank body, the tank cover can press the demister after being connected with the tank body, and the air outlet is arranged on the tank cover.

3. A novel acidic off-gas treatment apparatus according to claim 1, characterized by The first filter assembly comprises: First frame, the middle part of the first frame is equipped with first through hole corresponding to the upper chamber and the lower chamber, and one end of the first frame away from the tank body is equipped with first handle; First primary filter screen, the first primary filter screen is arranged in the inside of the first through hole, and there is spacing between the first primary filter screen and the end of the first through hole, so as to prevent impurities on the first primary filter screen from being scratched during the movement of the first filter assembly; First intermediate filter screen, the first intermediate filter screen is arranged in the inside of the first through hole and located above the first primary filter screen; First high-efficiency filter screen, the first high-efficiency filter screen is arranged in the inside of the first through hole and located above the first intermediate filter screen, and there is spacing between the first high-efficiency filter screen and the end of the first through hole, so as to prevent impurities on the first high-efficiency filter screen from being scratched during the movement of the first filter assembly.

4. A novel acidic off-gas treatment apparatus according to claim 3, characterized by The opening of the first sliding chute is equipped with first magnetic part, and the first frame is equipped with second magnetic part corresponding to the first magnetic part, and the tank body and the first frame can be magnetically connected through the cooperation of the first magnetic part and the second magnetic part.

5. A novel acidic off-gas treatment apparatus according to claim 1, characterized by The second filter assembly comprises: Second frame, the middle part of the second frame is equipped with second through hole corresponding to the first chamber and the second chamber, and one end of the second frame away from the tank body is equipped with second handle; A second primary filter screen is arranged inside the second through hole, and has a spacing between the second primary filter screen and the end of the second through hole to prevent impurities on the second primary filter screen from being scratched during movement of the second filter assembly. A second medium filter screen is arranged inside the second through hole and on the side of the second primary filter screen away from the tank body. A second high filter screen is arranged inside the second through hole and on the side of the second medium filter screen away from the tank body, and has a spacing between the second high filter screen and the end of the second through hole to prevent impurities on the second high filter screen from being scratched during movement of the second filter assembly.

6. A novel acidic off-gas treatment apparatus according to claim 1, characterized by The spray assembly comprises: A delivery pump, one end of which is inserted into the basic solution in the first chamber, and the other end of which is located in the upper chamber of the tank body. A spray head, which is connected to the end of the delivery pump located in the upper chamber, and can spray the basic solution towards the first filter assembly.

7. A novel acidic off-gas treatment apparatus according to claim 1, characterized by The first chamber is provided with a stirring mechanism, which comprises two stirring assemblies, the rotation shafts of which are located in a horizontal plane, for mixing solutions at different heights, the rotation shafts of the stirring assemblies are perpendicular to the plane where the second filter assembly is located, for preventing the solution stirred in the first chamber from entering the second chamber through the second filter assembly, and the rotation directions of the rotation shafts of the two stirring assemblies are opposite, so that the solution in the first chamber can be quickly and fully mixed and uniformly distributed.

8. A novel acidic off-gas treatment apparatus according to claim 7, characterized by The stirring assembly comprises: A motor, which is arranged on the side of the tank body away from the tank body. A rotation shaft, one end of which is connected to the motor, and the other end of which is located inside the first chamber, the rotation shaft is located in a horizontal plane and is perpendicular to the plane where the second filter assembly is located. A plurality of stirring rods, which are arranged on the rotation shaft.

9. A novel acidic off-gas treatment apparatus according to any one of claims 1 to 8, characterized in that, The top of the tank body is provided with a liquid inlet communicating with the first chamber, and the bottom of the tank body is provided with a liquid outlet with a valve communicating with the first chamber, the bottom of the lower chamber is arranged to be inclined, so as to facilitate the liquid in the lower chamber to be discharged through the connecting pump, and the bottom of the first chamber is arranged to be inclined, so as to facilitate the liquid in the first chamber to be discharged through the liquid outlet.

10. A novel acidic off-gas treatment apparatus according to any one of claims 1 to 8, characterized in that, The outlet end of the air inlet is arranged downward to avoid the inside of the air inlet from entering liquid.

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