Waste gas treatment device

Abstract

The utility model relates to a waste gas treatment device which comprises a bottom plate and a treatment cylinder arranged at the top of the bottom plate, a pretreatment filter box is arranged at the top of the treatment cylinder, a filter screen plate is detachably arranged in the pretreatment filter box, an air inlet is formed in one side of the pretreatment filter box, an air outlet pipe is arranged on the other side of the pretreatment filter box, and the air outlet pipe penetrates into the treatment cylinder and then is connected with a spherical air inlet cavity. A plurality of activated carbon column mounting cavities are uniformly distributed in the circumference of the top in the treatment barrel, a gas outlet cavity is formed below the gas inlet cavity, a plurality of gas inlet branch pipes corresponding to the activated carbon column mounting cavities are arranged on the side wall of the gas inlet cavity, and a plurality of gas outlet branch pipes corresponding to the activated carbon column mounting cavities are arranged on the side wall of the gas outlet cavity; positioning plates are correspondingly arranged at the upper part and the lower part of the inner wall of one side, close to the air inlet cavity, of the activated carbon column mounting cavity; an activated carbon column is inserted between the two positioning plates. The waste gas treatment device can be used for pretreating waste gas, removing large-particle impurities and avoiding influence on the adsorption efficiency of the activated carbon column, and the activated carbon column can be replaced without shutdown, so that the use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment, in particular to a waste gas treatment device. Background Art

[0002] During the process of paint production, a large amount of waste gas containing toxic substances will be generated. It is necessary to timely extract and discharge a large amount of paint waste gas outdoors to ensure the safety and hygiene of the working environment. The Chinese utility model patent with the publication number of CN217698523U discloses a waste gas treatment device for paint production. Through the setting of an activated carbon column, it can absorb a lot of dust particles and toxic substances in the waste gas. The setting of multiple air outlet holes on the air outlet plate makes the waste gas evenly discharged into the aqueous solution, so that the waste gas is dissolved in the aqueous solution, and the contact area between the waste gas and the aqueous solution is increased, thereby degrading and absorbing the dust particles and toxic substances in the waste gas, ensuring the poor treatment effect of dust particles and improving the treatment effect of waste gas. However, the following deficiencies exist in this solution:

[0003] 1. Lack of a pretreatment device. Larger particles are likely to accumulate inside the activated carbon column, causing blockage, reducing the effective area for air flow through, and lowering the adsorption efficiency of the activated carbon.

[0004] 2. Only one activated carbon column is set. When the adsorption is saturated, it is necessary to stop the machine to replace the activated carbon column, which is rather troublesome. Summary of the Invention

[0005] The utility model aims to solve the deficiencies of the prior art and provides a waste gas treatment device.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: An exhaust gas treatment device includes a bottom plate and a treatment cylinder installed on the top of the bottom plate. An inlet for liquid is provided at the upper part on one side of the treatment cylinder, and an outlet for liquid is provided at the bottom. A circulation pump connected to the inlet for liquid and the outlet for liquid is provided on the bottom plate. An exhaust port is provided at the upper part on the other side of the treatment cylinder. A pretreatment filter box is provided at the top of the treatment cylinder. A filter screen plate is detachably provided in the pretreatment filter box. An air inlet is provided on one side of the pretreatment filter box, and an air outlet pipe is provided on the other side. After the air outlet pipe penetrates into the treatment cylinder, it is connected to a spherical air inlet cavity. A plurality of activated carbon column installation cavities are evenly distributed in a circumferential manner at the top inside the treatment cylinder. An air outlet cavity is provided below the air inlet cavity. A plurality of air inlet branch pipes corresponding to the activated carbon column installation cavities are provided on the side wall of the air inlet cavity. A plurality of air outlet branch pipes corresponding to the activated carbon column installation cavities are provided on the side wall of the air outlet cavity. Positioning plates are respectively provided at the upper and lower parts on the inner wall of the activated carbon column installation cavity close to the air inlet cavity. An activated carbon column is inserted between the two positioning plates. The air inlet branch pipe penetrates into the activated carbon column installation cavity and is connected to the top inlet of the activated carbon column. The air outlet branch pipe penetrates into the activated carbon column installation cavity and is connected to the bottom outlet of the activated carbon column. A communicating pipe is provided at the bottom of the air outlet cavity. An air outlet disc is provided at the bottom of the communicating pipe. A water-blocking and air-permeable plate is provided at the upper part of the inner wall of the communicating pipe. An opening is provided on the side of the activated carbon column installation cavity away from the air inlet cavity, and a cover plate is installed in the opening.

[0007] Particularly, a plurality of slots are respectively provided on the front and rear inner walls of the pretreatment filter box. A strip-shaped hole is provided at the top of the pretreatment filter box. After passing through the strip-shaped hole, the filter screen plate is inserted into the slots.

[0008] Particularly, a horizontal plate is provided at the top of the filter screen plate. A handle is provided at the top of the horizontal plate, and a sealing gasket is provided at the bottom of the horizontal plate.

[0009] Particularly, a plurality of quick clamps corresponding to the horizontal plate are provided at the top of the pretreatment filter box, and the horizontal plate is fixed by being clamped tightly by the quick clamps.

[0010] Particularly, a cross-shaped fixing rod is provided between the air inlet cavity and the air outlet cavity, and the horizontal ends of the fixing rod are fixed on the outer wall of the activated carbon column installation cavity.

[0011] Particularly, an inlet pipe is connected to the inlet of the circulation pump, and an outlet pipe is connected to the outlet. The inlet pipe is connected to the outlet for liquid, and the outlet pipe is connected to the inlet for liquid. A drain branch pipe is connected to the outlet pipe.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. By providing the pretreatment filter box, the filter screen plate, the horizontal plate, and the quick clamps, the present utility model facilitates the pretreatment of the exhaust gas, removes large particle impurities, avoids blocking the activated carbon, and avoids reducing the adsorption efficiency of the activated carbon column. Moreover, the replacement operation of the filter screen plate is convenient and easy to use.

[0014] 2. By providing a number of activated carbon column installation cavities, an air inlet cavity, an air outlet cavity, air inlet branch pipes, air outlet branch pipes, positioning plates, and activated carbon columns, the utility model can not only adsorb and purify through multiple activated carbon columns simultaneously to improve the treatment efficiency, but also does not require shutdown when replacing the activated carbon columns, making it convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the utility model;

[0016] Figure 2 is a schematic diagram of the position of the activated carbon column installation cavity of the utility model;

[0017] In the figure: 1 - bottom plate; 2 - treatment cylinder; 3 - liquid inlet; 4 - liquid outlet; 5 - circulation pump; 6 - pretreatment filter box; 7 - filter screen plate; 8 - air inlet; 9 - air outlet pipe; 10 - air inlet cavity; 11 - activated carbon column installation cavity; 12 - air outlet cavity; 13 - air inlet branch pipe; 14 - air outlet branch pipe; 15 - positioning plate; 16 - activated carbon column; 17 - connecting pipe; 18 - air outlet disc; 19 - water-blocking and air-permeable plate; 20 - opening; 21 - slot; 22 - horizontal plate; 23 - quick clamp; 24 - fixing rod; 25 - exhaust port;

[0018] The following will be described in detail with reference to the embodiments of the utility model and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following further illustrates the utility model with reference to the drawings and embodiments:

[0020] As Figure 1 - Figure 2 shown, an exhaust gas treatment device includes a bottom plate 1, a treatment cylinder 2 installed on the top of the bottom plate 1. A liquid inlet 3 is provided on the upper part of one side of the treatment cylinder 2, and a liquid outlet 4 is provided at the bottom. A circulation pump 5 is provided on the bottom plate 1 and is connected to the liquid inlet 3 and the liquid outlet 4. An exhaust port 25 is provided on the upper part of the other side of the treatment cylinder 2. The inlet of the circulation pump 5 is connected to an inlet pipe, and the outlet is connected to an outlet pipe. The inlet pipe is connected to the liquid outlet 4, and the outlet pipe is connected to the liquid inlet 3. A drain branch pipe is connected to the outlet pipe.

[0021] At the top of the treatment cylinder 2, a pretreatment filter box 6 is provided. A filter screen plate 7 is detachably arranged inside the pretreatment filter box 6. An air inlet 8 is provided on one side of the pretreatment filter box 6, and an air outlet pipe 9 is provided on the other side. A number of slots 21 are correspondingly arranged on the front and rear inner walls of the pretreatment filter box 6. A strip-shaped hole is provided at the top of the pretreatment filter box 6. After passing through the strip-shaped hole, the filter screen plate 7 is inserted into the slot 21. A horizontal plate 22 is provided at the top of the filter screen plate 7. A handle is provided at the top of the horizontal plate 22. A sealing gasket is provided at the bottom of the horizontal plate 22. A number of quick clamps 23 corresponding to the horizontal plate 22 are provided at the top of the pretreatment filter box 6. The horizontal plate 22 is tightly fixed by the quick clamps 23. By providing the pretreatment filter box 6, the filter screen plate 7, the horizontal plate 22, and the quick clamps 23, it is convenient to pre-treat the waste gas, remove large-particle impurities, avoid blocking the activated carbon, avoid reducing the adsorption efficiency of the activated carbon column 16, and the replacement operation of the filter screen plate 7 is convenient and easy to use.

[0022] After the air outlet pipe 9 penetrates into the treatment cylinder 2, it is connected to a spherical air inlet cavity 10. A number of activated carbon column installation cavities 11 are circumferentially and evenly arranged at the top inside the treatment cylinder 2. An air outlet cavity 12 is provided below the air inlet cavity 10. A cross-shaped fixing rod 24 is provided between the air inlet cavity 10 and the air outlet cavity 12. The horizontal ends of the fixing rod 24 are fixed to the outer walls of the activated carbon column installation cavities 11. A number of air inlet branch pipes 13 corresponding to the activated carbon column installation cavities 11 are provided on the side wall of the air inlet cavity 10. A number of air outlet branch pipes 14 corresponding to the activated carbon column installation cavities 11 are provided on the side wall of the air outlet cavity 12. Positioning plates 15 are correspondingly provided at the upper and lower parts of the inner wall of the activated carbon column installation cavity 11 close to the air inlet cavity 10. An activated carbon column 16 is inserted between the two positioning plates 15. The air inlet branch pipe 13 penetrates into the activated carbon column installation cavity 11 and is connected to the top inlet of the activated carbon column 16. The air outlet branch pipe 14 penetrates into the activated carbon column installation cavity 11 and is connected to the bottom outlet of the activated carbon column 16. A communicating pipe 17 is provided at the bottom of the air outlet cavity 12. An air outlet disc 18 is provided at the bottom of the communicating pipe 17. A water-blocking and air-permeable plate 19 is provided at the upper part of the inner wall of the communicating pipe 17. An opening 20 is provided on the side of the activated carbon column installation cavity 11 away from the air inlet cavity 10. A cover plate is installed in the opening 20. By providing a number of activated carbon column installation cavities 11, an air inlet cavity 10, an air outlet cavity 12, air inlet branch pipes 13, air outlet branch pipes 14, positioning plates 15, and activated carbon columns 16, not only can multiple activated carbon columns 16 be used for adsorption and purification simultaneously to improve the treatment efficiency, but also the activated carbon columns 16 can be replaced without stopping the machine, which is convenient to use.

[0023] When the utility model works, waste gas enters the pretreatment filter box 6 through the air inlet 8, and after being filtered layer by layer by a plurality of filter plates 7, it enters the air inlet cavity 10 through the air outlet pipe 9, then enters the activated carbon column 16 through the air inlet branch pipe 13. After adsorption and purification, it enters the air outlet cavity 12 through the air outlet branch pipe 14, and then enters the air outlet disc 18 through the connecting pipe 17. The gas is dispersed into the liquid through the air outlet disc 18 and further absorbed and purified by the liquid, and then discharged through the exhaust port 25. During this period, the circulating pump 5 works, and the liquid in the treatment cylinder 2 circulates through the liquid outlet 4 and the liquid inlet 3, which can wash the waste gas discharged upward and further purify the waste gas. When discharging the liquid, it can be discharged through the liquid discharge branch pipe. The utility model can pre-treat the waste gas, remove large particle impurities, avoid affecting the adsorption efficiency of the activated carbon column 16, and the activated carbon column 16 can be replaced without stopping the machine, which is convenient to use.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0025] In the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] The above has made an exemplary description of the present utility model in conjunction with the drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. An exhaust gas treatment device, comprising a bottom plate (1) and a treatment cylinder (2) installed on the top of the bottom plate (1). An upper part on one side of the treatment cylinder (2) is provided with a liquid inlet (3), and the bottom is provided with a liquid outlet (4). A circulating pump (5) connected to the liquid inlet (3) and the liquid outlet (4) is provided on the bottom plate (1). An upper part on the other side of the treatment cylinder (2) is provided with an exhaust port (25), and it is characterized in that, At the top of the treatment cylinder (2), there is a pretreatment filter box (6). Inside the pretreatment filter box (6), a filter screen plate (7) is detachably arranged. On one side of the pretreatment filter box (6), there is an air inlet (8), and on the other side, there is an air outlet pipe (9). After the air outlet pipe (9) penetrates into the treatment cylinder (2), it is connected to a spherical air inlet cavity (10). At the top of the inner part of the treatment cylinder (2), a number of activated carbon column installation cavities (11) are evenly distributed in the circumferential direction. Below the air inlet cavity (10), there is an air outlet cavity (12). On the side wall of the air inlet cavity (10), there are a number of air inlet branch pipes (13) corresponding to the activated carbon column installation cavities (11). On the side wall of the air outlet cavity (12), there are a number of air outlet branch pipes (14) corresponding to the activated carbon column installation cavities (11). On the upper and lower parts of the inner wall of the activated carbon column installation cavity (11) close to the air inlet cavity (10), positioning plates (15) are correspondingly arranged. An activated carbon column (16) is inserted between the two positioning plates (15). The air inlet branch pipe (13) penetrates into the activated carbon column installation cavity (11) and is connected to the top inlet of the activated carbon column (16). The air outlet branch pipe (14) penetrates into the activated carbon column installation cavity (11) and is connected to the bottom outlet of the activated carbon column (16). At the bottom of the air outlet cavity (12), there is a connecting pipe (17). At the bottom of the connecting pipe (17), there is an air outlet disc (18). On the upper part of the inner wall of the connecting pipe (17), there is a water-blocking and air-permeable plate (19). On the side of the activated carbon column installation cavity (11) away from the air inlet cavity (10), there is an opening (20), and a cover plate is installed in the opening (20).

2. An exhaust gas treatment device according to claim 1, characterized in that, On the front and rear inner walls of the pretreatment filter box (6), a number of slots (21) are correspondingly arranged. On the top of the pretreatment filter box (6), there is a strip-shaped hole. After the filter screen plate (7) passes through the strip-shaped hole, it is inserted into the slots (21).

3. The waste gas treatment device according to claim 2, characterized in that On the top of the filter screen plate (7), there is a horizontal plate (22). On the top of the horizontal plate (22), there is a handle, and on the bottom of the horizontal plate (22), there is a sealing gasket.

4. An exhaust gas treatment device according to claim 3, characterized in that, On the top of the pretreatment filter box (6), there are a number of quick clamps (23) corresponding to the horizontal plate (22). The horizontal plate (22) is fixed by being pressed by the quick clamps (23).

5. An exhaust gas treatment device according to claim 1, characterized in that, Between the air inlet cavity (10) and the air outlet cavity (12), there is a cross-shaped fixing rod (24). The horizontal ends of the fixing rod (24) are fixed on the outer wall of the activated carbon column installation cavity (11).

6. An exhaust gas treatment device according to claim 1, characterized in that, At the inlet of the circulation pump (5), a liquid inlet pipe is connected, and at the outlet, a liquid outlet pipe is connected. The liquid inlet pipe is connected to the liquid outlet (4), the liquid outlet pipe is connected to the liquid inlet (3), and a liquid discharge branch pipe is connected to the liquid outlet pipe.

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