Silica gel production waste gas treatment device

Abstract

The invention provides a silica gel production waste gas treatment device, and relates to the technical field of waste gas treatment. A water inlet pipe is mounted in the top of the treatment tank body, the water inlet pipe is communicated with a water supply pipeline through a valve, and purification nozzles are arranged at the bottom of the water inlet pipe in a surrounding manner; an injection assembly is installed in the middle of the treatment tank body, and the bottom of the injection assembly is connected with two injection pipes. According to different concentrations of harmful components in waste gas, the height of the liquid level in the treatment tank body is changed, so that the retention time of sewage in the treatment tank body is prolonged or shortened, and the harmful components in the sewage can fully react with a reactant. The problem that in the application process of a water spraying waste gas purification treatment scheme adopted by silica gel production at present, harmful components in sewage are often difficult to fully and completely react with a reactant, so that part of sewage which is not fully reacted and still contains the harmful components is discharged outwards is solved.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment device for silica gel production. Background Art

[0002] Silica gel raw materials will produce volatile organic compounds during the mixing and vulcanization processes. The high temperature heating in the production process will cause some low molecular substances to evaporate and form waste gas; mainly including VOCs, such as benzene, toluene, xylene, ethyl acetate, acetone, etc. These substances are highly volatile and toxic; the waste gas generated needs to be purified and treated to reduce its harm to the environment and human health.

[0003] In today's silica gel production field, the current scheme for treating waste gas generated in the production process mostly uses water spraying to purify the waste gas. After the initial purification of the waste gas, the corresponding reactants will be added to the generated sewage, aiming to make the harmful components contained in the sewage react with the reactants to undergo a specific chemical reaction, thereby achieving the purpose of removing harmful substances and purifying sewage. However, in the actual production operation process, due to the influence of various complex factors, the harmful components in the sewage are often difficult to fully and completely react with the reactants. This leads to the risk of some sewage that has not been fully reacted and still contains harmful components being discharged to the outside. Once these sewage enters the natural environment, it will cause serious pollution and damage to the surrounding ecological environment. Summary of the invention

[0004] The present disclosure relates to a waste gas treatment device for silica gel production. Water is sprayed into the waste gas flowing upward inside a treatment tank body through a purification nozzle, thereby purifying the waste gas. A water retaining cap prevents water from entering an air intake inner pipe, so that harmful components in the waste gas are dissolved in water. The gas discharged from the exhaust top port meets the emission standards. The upper connecting pipe is raised and lowered according to the concentration of harmful components in the waste gas, and the height of the upper connecting pipe is fixed by a nut to change the liquid level height inside the treatment tank body, thereby extending or shortening the residence time of sewage inside the treatment tank body, so that the harmful components in the sewage can fully react with the reactant. The sewage discharged from the liquid level discharge pipe meets the discharge standard after static sedimentation.

[0005] In a first aspect, the present disclosure provides a device for treating waste gas from the production of silicone rubber, specifically comprising: a treatment tank body; a water inlet pipe is installed in the top of the treatment tank body, the water inlet pipe is connected to the water supply pipeline through a valve, and a purification nozzle is arranged in a surrounding shape at the bottom of the water inlet pipe; an injection assembly is installed in the middle of the treatment tank body, and two filling pipes are connected to the bottom of the injection assembly; a small pulley and a synchronous belt are installed inside the treatment tank body, and the small pulley is connected to the synchronous belt; a mixing wheel is installed in the bottom of the treatment tank body, and the synchronous belt is connected to the top of the mixing wheel; a liquid level drain pipe is installed outside the bottom of the treatment tank body, and the top of the liquid level drain pipe is bent downward.

[0006] Furthermore, an inner air intake pipe is provided at the bottom of the treatment tank body, the bottom of the inner air intake pipe is connected to the exhaust gas pipeline, a water retaining cap is installed on the top of the inner air intake pipe, an exhaust top port is provided on the top of the inner air intake pipe, and the exhaust top port is connected to the exhaust pipeline. The exhaust gas produced by the silica gel production enters the treatment tank body through the inner air intake pipe, and the water reaches the purification nozzle position through the water inlet pipe, and the water is sprayed into the exhaust gas flowing upward inside the treatment tank body through the purification nozzle.

[0007] Furthermore, the injection assembly is composed of a ring cover, an outer ring, an inner ring, a bottom ring sheet and a spring. A liquid inlet pipe is arranged on the top of the ring cover. The liquid inlet pipe runs through the interior of the processing tank body. The liquid inlet pipe is connected to the reactant delivery pipeline through a valve. The ring cover is fixedly connected to the outer ring and the inner ring, and the outer ring is fixedly connected to the inner wall of the processing tank body.

[0008] Furthermore, the bottom ring piece is in rotational contact with the outer ring and the inner ring, and two guide tubes are arranged at the bottom of the bottom ring piece. The top of the guide tube is connected with the liquid inlet pipe, the top of the filling tube is threadedly connected with the bottom of the guide tube, and the bottom end of the filling tube is located below the liquid level.

[0009] Furthermore, a connecting hole is provided inside the ring cover, and a vertical rod is provided inside the bottom ring piece, the vertical rod passes through the connecting hole, and a spring is sleeved on the outside of the vertical rod. The bottom of the spring contacts the bottom ring piece, and the top of the spring contacts the ring cover. The spring applies a downward thrust to the bottom ring piece, so that the bottom ring piece is in close contact with the outer ring and the inner ring, thereby ensuring the anti-leakage effect between the bottom ring piece and the outer ring and the inner ring. The fallen sewage is temporarily stored in the bottom of the treatment tank body, and the reactant is transported to the filling pipe through the injection assembly, and the reactant is injected into the sewage through the filling pipe.

[0010] Furthermore, the small pulley is rotatably connected to the treatment tank body, a driven pulley is arranged on the top of the small pulley, the motor is connected to the driven pulley through a belt, the mixing wheel is rotatably connected to the treatment tank body, a large pulley is arranged on the top of the mixing wheel, the small pulley is rotatably connected to the large pulley through a synchronous belt, and during the process of adding the reactant into the sewage, the motor drives the small pulley to rotate, the small pulley drives the mixing wheel to rotate through the synchronous belt, and the sewage is stirred by the mixing wheel, so that the harmful components in the sewage are fully mixed with the reactant to react.

[0011] Furthermore, a linkage hole is provided inside the mixing wheel, and a filling pipe runs through the linkage hole. When the mixing wheel rotates, the mixing wheel drives the filling pipe to rotate synchronously, so that the reactant discharged from the filling pipe can be spread in the sewage more quickly.

[0012] Furthermore, a drain port is provided at the bottom of the processing tank body, the top of the liquid level drain pipe is bent downward, and the liquid level drain pipe is composed of a lower connecting pipe, an upper connecting pipe and a nut. The bottom of the lower connecting pipe is connected to the drain port, and the bottom of the upper connecting pipe is connected to the lower connecting pipe.

[0013] Furthermore, the upper connecting pipe is slidably connected to the lower connecting pipe, a guide hole is provided on the outside of the lower connecting pipe, a screw is provided on the outside of the upper connecting pipe, the screw slides through the guide hole, a nut is threadedly connected to the outside of the screw, and two nuts connected to the outside of the screw are in contact with the upper and lower sides of the lower connecting pipe. The upper connecting pipe can be raised and lowered according to the concentration of harmful components in the exhaust gas, and the height of the upper connecting pipe can be fixed by the nut to change the liquid level height inside the treatment tank, thereby extending or shortening the residence time of the sewage inside the treatment tank.

[0014] The present invention provides a silica gel production waste gas treatment device, which has the following beneficial effects:

[0015] When the present invention is in use, waste gas produced by silica gel production enters the processing tank body through the air inlet inner pipe, water reaches the purification nozzle position through the water inlet pipe, and the water is sprayed into the waste gas flowing upward inside the processing tank body through the purification nozzle, thereby purifying the waste gas. The water retaining cap prevents water from entering the air inlet inner pipe, so that harmful components in the waste gas are dissolved in the water, and the gas discharged from the exhaust top port meets the emission standards.

[0016] In addition, a downward thrust is applied to the bottom ring piece through a spring, so that the bottom ring piece is in close contact with the outer ring and the inner ring, thereby ensuring the anti-leakage effect between the bottom ring piece and the outer ring and the inner ring. The falling sewage is temporarily stored in the bottom of the treatment tank body, and the reactant is transported to the filling pipe through the injection assembly. The filling pipe injects the reactant into the sewage, so that the reactant reacts with the harmful components in the sewage and converts them into harmless components.

[0017] In addition, when the reactant is added to the sewage, the motor drives the small pulley to rotate, and the small pulley drives the mixing wheel to rotate through the synchronous belt. The sewage is stirred by the mixing wheel, so that the harmful components in the sewage are fully mixed with the reactant to react, thereby ensuring the treatment effect of the harmful components. While the mixing wheel rotates, the mixing wheel drives the filling pipe to rotate synchronously, so that the reactant discharged from the filling pipe can be spread in the sewage faster, effectively improving the reaction efficiency between the harmful components in the sewage and the reactant.

[0018] In addition, the screw and the guide hole cooperate to guide the movement of the upper connecting pipe. The upper connecting pipe can be raised and lowered according to the concentration of harmful components in the exhaust gas, and the height of the upper connecting pipe can be fixed by a nut to change the liquid level inside the treatment tank, thereby extending or shortening the residence time of the sewage in the treatment tank, so that the harmful components in the sewage can fully react with the reactants, and the sewage discharged by the liquid level discharge pipe reaches the discharge standard after static sedimentation.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0021] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached picture:

[0023] Figure 1 The overall axial structure schematic diagram of the silica gel production waste gas treatment device of the present application is shown;

[0024] Figure 2 The overall cross-sectional structure schematic diagram of the silica gel production waste gas treatment device of the present application is shown;

[0025] Figure 3 A schematic diagram of the bottom axial structure of the water retaining cap of the silica gel production waste gas treatment device of the present application is shown;

[0026] Figure 4 A schematic diagram showing the connection structure of the injection assembly and the filling pipe of the silica gel production waste gas treatment device of the present application is shown;

[0027] Figure 5 A schematic cross-sectional structure diagram of an injection assembly of a silica gel production waste gas treatment device of the present application is shown;

[0028] Figure 6 A schematic diagram showing the disassembly structure of the injection assembly of the silica gel production waste gas treatment device of the present application is shown;

[0029] Figure 7 A schematic diagram of the split structure of the small pulley, mixing wheel and synchronous belt of the silica gel production waste gas treatment device of the present application is shown;

[0030] Figure 8 A schematic diagram of the top axial structure of the liquid level discharge pipe of the silica gel production waste gas treatment device of the present application is shown;

[0031] Fig. 9 A schematic diagram of the liquid level pipe splitting structure of the silica gel production waste gas treatment device of the present application is shown.

[0032] Reference numerals list

[0033] 1. Treatment tank body; 11. Inner air inlet pipe; 12. Exhaust top port; 13. Liquid discharge port;

[0034] 2. Water inlet pipe; 21. Purification nozzle;

[0035] 3. Water retaining cap;

[0036] 4. injection assembly; 41. ring cover; 411. liquid inlet pipe; 412. connecting hole; 42. outer ring; 43. inner ring; 44. bottom ring piece; 441. vertical rod; 442. guide pipe; 45. spring;

[0037] 5. Filling pipe;

[0038] 6. Small pulley; 61. Driven pulley;

[0039] 7. Mixing wheel; 71. Large pulley; 72. Linkage hole;

[0040] 8. Synchronous belt;

[0041] 9. Liquid level pipe; 91. Lower connecting pipe; 911. Guide hole; 92. Upper connecting pipe; 921. Screw; 93. Nut. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figures 1 to 9 :

[0044] The present invention proposes a device for treating waste gas produced by silica gel, comprising: a treatment tank body 1; a water inlet pipe 2 is installed in the top of the treatment tank body 1, the water inlet pipe 2 is connected to the water supply pipeline through a valve, and a purification nozzle 21 is arranged in a surrounding shape at the bottom of the water inlet pipe 2; an injection assembly 4 is installed in the middle of the treatment tank body 1, and two filling pipes 5 are connected to the bottom of the injection assembly 4; a small pulley 6 and a synchronous belt 8 are installed inside the treatment tank body 1, and the small pulley 6 is connected to the synchronous belt 8; a mixing wheel 7 is installed in the bottom of the treatment tank body 1, and the synchronous belt 8 is connected to the top of the mixing wheel 7; a liquid level discharge pipe 9 is installed outside the bottom of the treatment tank body 1, and the top of the liquid level discharge pipe 9 is bent downward; the treatment tank An inner air intake pipe 11 is arranged at the bottom of the body 1, and the bottom of the inner air intake pipe 11 is connected with the exhaust gas pipeline. A water retaining cap 3 is installed at the top of the inner air intake pipe 11, and an exhaust top port 12 is arranged at the top of the inner air intake pipe 11, and the exhaust top port 12 is connected with the exhaust pipeline. The exhaust gas produced by the silica gel production enters the treatment tank body 1 through the inner air intake pipe 11, and the water reaches the purification nozzle 21 through the water inlet pipe 2. The water is sprayed into the exhaust gas flowing upward inside the treatment tank body 1 through the purification nozzle 21, which has the effect of purifying the exhaust gas. The water retaining cap 3 prevents water from entering the inner air intake pipe 11, so that the harmful components in the exhaust gas are dissolved in the water, and the gas discharged from the exhaust top port 12 meets the emission standards.

[0045] In the disclosed embodiment, the injection assembly 4 is composed of a ring cover 41, an outer ring 42, an inner ring 43, a bottom ring piece 44 and a spring 45. A liquid inlet pipe 411 is arranged on the top of the ring cover 41. The liquid inlet pipe 411 runs through the interior of the processing tank body 1. The liquid inlet pipe 411 is connected to the reactant delivery pipeline through a valve. The ring cover 41 is fixedly connected to the outer ring 42 and the inner ring 43. The outer ring 42 is fixedly connected to the inner wall of the processing tank body 1. The bottom ring piece 44 is in rotational contact with the outer ring 42 and the inner ring 43. Two guide pipes 442 are arranged at the bottom of the bottom ring piece 44. The top of the guide pipe 442 is connected to the liquid inlet pipe 411. The top of the filling pipe 5 is threadedly connected to the bottom of the guide pipe 442, and the bottom end of the filling pipe 5 is located below the liquid level.

[0046] In the embodiment of the present disclosure, a connecting hole 412 is provided inside the ring cover 41, a vertical rod 441 is provided inside the bottom ring piece 44, the vertical rod 441 passes through the connecting hole 412, the spring 45 is sleeved outside the vertical rod 441, the bottom of the spring 45 contacts the bottom ring piece 44, and the top of the spring 45 contacts the ring cover 41.

[0047] By adopting the above technical solution, a downward thrust is applied to the bottom ring piece 44 through the spring 45, so that the bottom ring piece 44 is in close contact with the outer ring 42 and the inner ring 43, thereby ensuring the anti-leakage effect between the bottom ring piece 44 and the outer ring 42 and the inner ring 43. The falling sewage is temporarily stored in the bottom of the treatment tank body 1, and the reactant is transported to the filling pipe 5 through the injection component 4. The filling pipe 5 injects the reactant into the sewage, so that the reactant reacts with the harmful components in the sewage and converts them into harmless components.

[0048] In the disclosed embodiment, the small pulley 6 is rotatably connected to the processing tank body 1, a driven pulley 61 is arranged on the top of the small pulley 6, the motor is connected to the driven pulley 61 through a belt, the mixing wheel 7 is rotatably connected to the processing tank body 1, a large pulley 71 is arranged on the top of the mixing wheel 7, and the small pulley 6 is rotatably connected to the large pulley 71 through a synchronous belt 8;

[0049] By adopting the above technical solution, when the reactant is added into the sewage, the motor drives the small pulley 6 to rotate, and the small pulley 6 drives the mixing wheel 7 to rotate through the synchronous belt 8. The sewage is stirred by the mixing wheel 7, so that the harmful components in the sewage are fully mixed with the reactant to react, thereby ensuring the treatment effect of the harmful components.

[0050] Embodiment 2, based on embodiment 1, a linkage hole 72 is provided inside the mixing wheel 7, and the filling pipe 5 runs through the linkage hole 72;

[0051] By adopting the above technical solution, while the mixing wheel 7 rotates, the mixing wheel 7 drives the filling pipe 5 to rotate synchronously, so that the reactant discharged from the filling pipe 5 can be spread in the sewage more quickly, effectively improving the reaction efficiency between the harmful components in the sewage and the reactant.

[0052] Embodiment 3, on the basis of Embodiment 1 and Embodiment 2, a drain port 13 is provided at the bottom of the processing tank body 1, the top of the liquid level drain pipe 9 is bent downward, the liquid level drain pipe 9 is composed of a lower connecting pipe 91, an upper connecting pipe 92 and a nut 93, the bottom of the lower connecting pipe 91 is connected to the drain port 13, the bottom of the upper connecting pipe 92 is connected to the lower connecting pipe 91, the upper connecting pipe 92 is slidably connected to the lower connecting pipe 91, a guide hole 911 is provided on the outside of the lower connecting pipe 91, a screw 921 is provided on the outside of the upper connecting pipe 92, the screw 921 slides through the guide hole 911, the nut 93 is threadedly connected to the outside of the screw 921, and the two nuts 93 connected to the outside of the screw 921 are in contact with the upper and lower sides of the lower connecting pipe 91;

[0053] By adopting the above technical solution, the screw 921 cooperates with the guide hole 911 to guide the movement of the upper connecting pipe 92. The upper connecting pipe 92 can be raised and lowered according to the concentration of harmful components in the exhaust gas, and the height of the upper connecting pipe 92 can be fixed by the nut 93 to change the liquid level height inside the treatment tank body 1, thereby extending or shortening the residence time of the sewage in the treatment tank body 1, so that the harmful components in the sewage can fully react with the reactant, and the sewage discharged by the liquid level discharge pipe 9 reaches the discharge standard after static sedimentation.

[0054] The working principle of this embodiment is as follows: first, the waste gas produced by the production of silica gel enters the treatment tank body 1 through the air intake inner tube 11, and the water reaches the purification nozzle 21 through the water intake pipe 2. The water is sprayed into the waste gas flowing upward inside the treatment tank body 1 through the purification nozzle 21, which has the effect of purifying the waste gas. The water retaining cap 3 prevents water from entering the air intake inner tube 11, so that the harmful components in the waste gas are dissolved in the water; the spring 45 applies a downward thrust to the bottom ring piece 44, so that the bottom ring piece 44 is in close contact with the outer ring 42 and the inner ring 43, and the leakage prevention effect between the bottom ring piece 44 and the outer ring 42 and the inner ring 43 is ensured. The falling sewage is temporarily stored in the bottom of the treatment tank body 1, and the reactant is transported to the filling pipe 5 through the injection assembly 4. The filling pipe 5 injects the reactant into the sewage, so that the reactant reacts with the harmful components in the sewage and converts them into harmless components. During the process of adding the reactant to the sewage, the motor drives the small pulley 6 to rotate, and the small pulley 6 drives the mixing wheel 7 to rotate through the synchronous belt 8, and the sewage is stirred by the mixing wheel 7, so that the harmful components in the sewage are fully mixed with the reactant to react; while the mixing wheel 7 rotates, the mixing wheel 7 drives the filling pipe 5 to rotate synchronously, so that the reactant discharged from the filling pipe 5 can be spread in the sewage more quickly; the upper connecting pipe 92 can be raised and lowered according to the concentration of harmful components in the exhaust gas, and the height of the upper connecting pipe 92 can be fixed by the nut 93 to change the liquid level height inside the treatment tank body 1, thereby extending or shortening the residence time of the sewage in the treatment tank body 1, so that the harmful components in the sewage can fully react with the reactant, and the sewage discharged by the liquid level discharge pipe 9 reaches the discharge standard after static sedimentation.

[0055] In this article, there are a few points to note:

[0056] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0057] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0058] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A silica gel production waste gas treatment device, comprising: A treatment tank body (1); characterized in that a water inlet pipe (2) is installed inside the top of the treatment tank body (1), the water inlet pipe (2) is connected to the water supply pipeline through a valve, and a purification nozzle (21) is arranged in a surrounding shape at the bottom of the water inlet pipe (2); an injection assembly (4) is installed in the middle of the treatment tank body (1), and two filling pipes (5) are connected to the bottom of the injection assembly (4); a small pulley (6) and a synchronous belt (8) are installed inside the treatment tank body (1), and the small pulley (6) is connected to the synchronous belt (8); a mixing wheel (7) is installed inside the bottom of the treatment tank body (1), and the synchronous belt (8) is connected to the top of the mixing wheel (7); a liquid level discharge pipe (9) is installed outside the bottom of the treatment tank body (1), and the top of the liquid level discharge pipe (9) is bent downward.

2. A silica gel production waste gas treatment device according to claim 1, characterized in that: An inner air intake pipe (11) is arranged at the bottom of the treatment tank body (1), the bottom of the inner air intake pipe (11) is connected to the exhaust gas pipeline, a water retaining cap (3) is installed at the top of the inner air intake pipe (11), an exhaust top port (12) is arranged at the top of the inner air intake pipe (11), and the exhaust top port (12) is connected to the exhaust pipeline.

3. The silica gel production waste gas treatment device according to claim 1, characterized in that: The injection assembly (4) is composed of a ring cover (41), an outer ring (42), an inner ring (43), a bottom ring sheet (44) and a spring (45); a liquid inlet pipe (411) is arranged on the top of the ring cover (41); the liquid inlet pipe (411) runs through the interior of the processing tank body (1); the liquid inlet pipe (411) is connected to the reactant delivery pipeline through a valve; the ring cover (41) is fixedly connected to the outer ring (42) and the inner ring (43); and the outer ring (42) is fixedly connected to the inner wall of the processing tank body (1).

4. A silica gel production waste gas treatment device according to claim 3, characterized in that: The bottom ring piece (44) is in rotational contact with the outer ring (42) and the inner ring (43); two guide pipes (442) are arranged at the bottom of the bottom ring piece (44); the top of the guide pipe (442) is connected to the liquid inlet pipe (411); the top of the filling pipe (5) is threadedly connected to the bottom of the guide pipe (442); and the bottom end of the filling pipe (5) is located below the liquid level.

5. The silica gel production waste gas treatment device according to claim 3 is characterized in that: The ring cover (41) is provided with a connecting hole (412) inside, the bottom ring piece (44) is provided with a vertical rod (441) inside, the vertical rod (441) passes through the connecting hole (412), the spring (45) is sleeved on the outside of the vertical rod (441), the bottom of the spring (45) contacts the bottom ring piece (44), and the top of the spring (45) contacts the ring cover (41).

6. The silica gel production waste gas treatment device according to claim 1, characterized in that: The small pulley (6) is rotationally connected to the processing tank body (1), a driven pulley (61) is arranged on the top of the small pulley (6), the motor is transmission-connected to the driven pulley (61) via a belt, the mixing wheel (7) is rotationally connected to the processing tank body (1), a large pulley (71) is arranged on the top of the mixing wheel (7), and the small pulley (6) is rotationally connected to the large pulley (71) via a synchronous belt (8).

7. The silica gel production waste gas treatment device according to claim 1, characterized in that: A linkage hole (72) is provided inside the mixing wheel (7), and the filling pipe (5) passes through the linkage hole (72).

8. The silica gel production waste gas treatment device according to claim 1, characterized in that: The bottom of the treatment tank body (1) is provided with a liquid discharge port (13); the top of the liquid level discharge pipe (9) is bent downward; the liquid level discharge pipe (9) is composed of a lower connecting pipe (91), an upper connecting pipe (92) and a nut (93); the bottom of the lower connecting pipe (91) is connected to the liquid discharge port (13); and the bottom of the upper connecting pipe (92) is connected to the lower connecting pipe (91).

9. The silica gel production waste gas treatment device according to claim 8, characterized in that: The upper connecting tube (92) is slidably connected to the lower connecting tube (91); a guide hole (911) is arranged outside the lower connecting tube (91); a screw rod (921) is arranged outside the upper connecting tube (92); the screw rod (921) slides through the guide hole (911); a nut (93) is threadedly connected to the outside of the screw rod (921); and two nuts (93) connected to the outside of the screw rod (921) are in contact with the upper and lower sides of the lower connecting tube (91).

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