Multi-filtering assembly for waste gas treatment of environment-friendly cabinet

Abstract

The utility model relates to the technical field of purification components, in particular to a multi-filtering component for waste gas treatment of an environment-friendly cabinet, which comprises a purification liquid box, a primary filtering box and a secondary filtering box, an exhaust pipe and a gas conveying pipe are inserted into the top of the purification liquid box, and the gas conveying pipe is inserted into the inner bottom of the purification liquid box and is connected with a hollow gas spraying disc. The primary filter screen cover is arranged in the primary filter tank to intercept large-particle impurities, so that impurities in waste gas are reduced, and the waste gas enters the purification liquid tank through the gas delivery pipe and is dispersed in the purification liquid through the gas injection holes of the hollow gas injection disc to be purified, so that the waste gas is treated; an activated carbon filter layer, a cold catalyst filter layer and an efficient HEPA filter layer in the secondary filter box sequentially adsorb peculiar smell, decompose harmful gas and filter small particles, so that the waste gas is deeply purified; smooth circulation of gas is guaranteed through the exhaust pipe and the gas feeding pipe, the treated clean gas is exhausted through the gas outlet pipe, multiple efficient treatment of waste gas is achieved, and the environment-friendly requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of purification component technology, specifically a multi-stage filtration component for treating exhaust gas in an environmental protection cabinet. Background Technology

[0002] With the acceleration of industrialization, waste gases generated from various production activities pose an increasingly serious threat to the environment and human health. As a crucial piece of equipment for treating waste gases, the effectiveness of environmental protection cabinets directly impacts whether emissions meet standards. Therefore, developing efficient and reliable multi-stage filtration components for waste gas treatment in environmental protection cabinets is of significant practical importance. Traditional waste gas treatment components often employ a single filtration method, such as relying solely on physical filters or chemical absorbents, resulting in low treatment efficiency and difficulty in meeting the rapid treatment needs of large volumes of waste gas. Single filtration methods are insufficient to remove all harmful substances in waste gas, such as particulate matter and harmful gases, leading to incomplete purification and secondary pollution of the environment. Utility Model Content

[0003] The purpose of this invention is to provide a multi-stage filtration assembly for waste gas treatment in environmental protection cabinets, in order to solve the problem of low waste gas treatment efficiency of existing environmental protection cabinets mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The environmental protection cabinet's exhaust gas treatment system includes a multi-stage filtration system comprising a purification liquid tank, a primary filter tank, and a secondary filter tank.

[0006] The top of the purification liquid tank is connected to an exhaust pipe and a gas supply pipe. The gas supply pipe is inserted into the bottom of the purification liquid tank and connected to a hollow jet plate. The top and bottom surfaces of the hollow jet plate are provided with several uniformly spaced jet holes.

[0007] The bottom of the primary filter box is inserted and fixed to the top of the air supply pipe. A primary filter screen with a U-shaped cross-section is installed inside the primary filter box. A sealing cover is provided on the top of the primary filter box, and an air inlet pipe is connected to the sealing cover.

[0008] The top center of the secondary filter box is connected to the exhaust pipe through an air supply pipe. The secondary filter box is provided with an activated carbon filter layer, a cold catalyst filter layer and a high-efficiency HEPA filter layer from top to bottom. An air outlet pipe is installed at the bottom of the secondary filter box.

[0009] Preferably, an inlet / outlet pipe with a valve is installed on one outer wall of the purified liquid tank for inputting or discharging purified liquid.

[0010] Preferably, the purification liquid tank has a built-in purification liquid area, and the hollow jet plate is immersed in the purification liquid area.

[0011] Preferably, a 20-30cm gap is left between the liquid level in the purification liquid area and the top of the purification liquid tank.

[0012] Preferably, one end of the hollow jet disc is fitted with a connector that is vertically inserted into the bottom of the gas delivery pipe.

[0013] Preferably, a square sealing gasket is installed on the top edge of the primary filter screen.

[0014] Preferably, the purification liquid tank and the secondary filter tank are connected as a whole, and support columns are installed at the four bottom corners.

[0015] Compared with existing technologies, the beneficial effects of this utility model are:

[0016] 1. In the multi-stage filtration system of this environmental protection cabinet for waste gas treatment, the primary filter screen in the primary filter box intercepts large particulate impurities, reducing the amount of impurities in the waste gas. Through the purification liquid tank, the waste gas enters through the gas supply pipe and is dispersed into the purification liquid through the jet holes of the hollow jet plate, thus treating the waste gas. The activated carbon filter layer, cold catalyst filter layer, and high-efficiency HEPA filter layer in the secondary filter box successively adsorb odors, decompose harmful gases, and filter fine particles, resulting in deep purification of the waste gas. The exhaust pipe and gas supply pipe ensure smooth gas flow, and the exhaust pipe discharges the treated clean gas, ultimately achieving multi-stage and efficient treatment of waste gas to meet environmental protection requirements.

[0017] 2. In the multi-filtration components of the exhaust gas treatment of this environmental protection cabinet, an inlet / outlet pipe with a valve is installed on one outer wall of the purified liquid tank for inputting or discharging purified liquid. Through the inlet / outlet pipe with the valve, the purified liquid in the purified liquid tank can be easily inputted or discharged, making the replacement and replenishment of purified liquid simple and convenient.

[0018] 3. In the multi-filtration components of this environmental protection cabinet for exhaust gas treatment, a purification liquid zone is set up, and the hollow jet plate is immersed in it. After the exhaust gas is discharged from the jet hole, it comes into full contact with the purification liquid for purification. A 20-30cm gap is left between the liquid level in the purification liquid zone and the top of the purification liquid tank to prevent the purification liquid from overflowing, making the purification process stable and safe. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2This is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 3 This is a top view of the hollow jet disc of this utility model.

[0023] 10. Purified liquid tank; 11. Exhaust pipe; 12. Inlet / outlet pipe; 13. Gas delivery pipe; 14. Hollow jet plate; 15. Purified liquid area; 16. Connector; 17. Jet port;

[0024] 20. Primary filter box; 21. Air inlet pipe; 22. Sealing cover; 23. Primary filter screen cover; 24. Sealing gasket;

[0025] 30. Secondary filter box; 31. Air supply pipe; 32. Activated carbon filter layer; 33. Cold catalyst filter layer; 34. High-efficiency HEPA filter layer; 35. Air outlet pipe;

[0026] 40. Support column. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. 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.

[0028] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] The multi-stage filtration system for exhaust gas treatment in environmental protection cabinets, such as... Figures 1-3As shown, the system includes a purification liquid tank 10, a primary filter tank 20, and a secondary filter tank 30. The top of the purification liquid tank 10 is connected to an exhaust pipe 11 and an air supply pipe 13. The air supply pipe 13 is inserted into the bottom of the purification liquid tank 10 and connected to a hollow jet disc 14. The top and bottom surfaces of the hollow jet disc 14 have several evenly spaced jet holes 17. The bottom of the primary filter tank 20 is fixedly connected to the top of the air supply pipe 13. A U-shaped primary filter screen 23 is installed inside the primary filter tank 20. A sealing cover 22 is provided on the top of the primary filter tank 20, and an air inlet pipe 21 is connected to the sealing cover 22. The top center of the secondary filter tank 30 is connected to the exhaust pipe 11 via an air supply pipe 31. The secondary filter tank 30, from top to bottom, is provided with an activated carbon filter layer 32, a cold catalyst filter layer 33, and a high-efficiency particulate air filter layer. The secondary filter box 30 has a high-efficiency HEPA filter layer 34 and an exhaust pipe 35 installed at the bottom. The primary filter screen 23 set in the primary filter box 20 intercepts large particulate impurities, reducing the impurities in the exhaust gas. The exhaust gas enters through the air supply pipe 13 through the purification liquid tank 10 and is dispersed into the purification liquid through the air jet holes 17 of the hollow air jet disc 14, thus treating the exhaust gas. The activated carbon filter layer 32, the cold catalyst filter layer 33 and the high-efficiency HEPA filter layer 34 in the secondary filter box 30 adsorb odors, decompose harmful gases and filter fine particles in sequence, thus deeply purifying the exhaust gas. The exhaust pipe 11 and the air supply pipe 31 ensure smooth gas flow, and the exhaust pipe 35 discharges the treated clean gas, ultimately achieving multiple high-efficiency treatments of the exhaust gas to meet environmental protection requirements.

[0030] Furthermore, an inlet / outlet pipe 12 with a valve is installed on one outer wall of the purification liquid tank 10 for inputting or discharging the purification liquid. Through the inlet / outlet pipe 12 with a valve, the purification liquid in the purification liquid tank 10 can be conveniently inputted or discharged, making the replacement and replenishment of the purification liquid simple and convenient.

[0031] Specifically, the purification liquid tank 10 has a built-in purification liquid area 15, and the hollow jet plate 14 is immersed in the purification liquid area 15. There is a 20-30cm gap between the liquid surface of the purification liquid area 15 and the top of the purification liquid tank 10. Through the purification liquid area 15 and the hollow jet plate 14 being immersed in it, the exhaust gas is discharged from the jet hole 17 and comes into full contact with the purification liquid for purification. The 20-30cm gap between the liquid surface of the purification liquid area 15 and the top of the purification liquid tank 10 can prevent the purification liquid from overflowing, making the purification process stable and safe.

[0032] One end of the hollow jet disk 14 is equipped with a connector 16 that is vertically inserted into the bottom of the gas delivery pipe 13. Through the connector 16, the hollow jet disk 14 and the gas delivery pipe 13 can be vertically inserted into each other, so that the gas can be stably transmitted from the gas delivery pipe 13 to the hollow jet disk 14, ensuring the stability of the jet.

[0033] It is worth noting that a square sealing gasket 24 is installed on the top edge of the primary filter screen 23. By installing the sealing gasket 24 on the top edge of the primary filter screen 23, the sealing performance of the primary filter box 20 can be enhanced, so that the exhaust gas will not leak from the gaps and the filtration effect can be guaranteed.

[0034] In addition, the purification liquid tank 10 and the secondary filter box 30 are connected as a whole, and support columns 40 are installed at the four corners of the bottom. The support columns 40 installed at the four corners of the bottom of the purification liquid tank 10 and the secondary filter box 30 can support the entire equipment and make the equipment stable.

[0035] The working principle of the multiple filtration components in this environmental protection cabinet for treating exhaust gas:

[0036] First, open the valve of the inlet / outlet pipe 12 and inject an appropriate amount of purification liquid into the purification liquid area 15 of the purification liquid tank 10, and then close the valve; the exhaust gas containing impurities enters the primary filter box 20 through the air inlet pipe 21. The primary filter screen 23 with a U-shaped cross section inside the box will intercept larger particulate impurities in the exhaust gas and complete the preliminary filtration.

[0037] Next, the exhaust gas that has passed through the primary filter passes through the gas pipe 13 and then through the connector 16 into the hollow jet disk 14. It is then ejected from the jet hole 17 and comes into full contact with the purification liquid in the purification liquid zone 15. Some of the harmful substances in the exhaust gas react with the purification liquid to achieve further purification.

[0038] Finally, the exhaust gas treated by the purification liquid flows through the exhaust pipe 11 and enters the secondary filter box 30 through the air supply pipe 31. Inside the secondary filter box 30, the exhaust gas passes through the activated carbon filter layer 32 to adsorb odors and harmful gases, the cold catalyst filter layer 33 to decompose harmful components, and the high-efficiency HEPA filter layer 34 to filter fine particles. After this series of deep purifications, the clean gas is discharged from the exhaust pipe 35.

[0039] During equipment operation, the sealing cover 22 and sealing gasket 24 ensure the sealing of each component and prevent exhaust gas leakage; the support column 40 provides stable support for the equipment; when the purification liquid needs to be replaced, the valve of the inlet and outlet liquid pipe 12 is opened to discharge the old liquid and then new liquid is added to ensure the purification effect.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration assembly for treating exhaust gas in an environmental protection cabinet, characterized in that: It includes a purification liquid tank (10), a primary filter box (20), and a secondary filter box (30); The top of the purification liquid tank (10) is connected to an exhaust pipe (11) and a gas supply pipe (13). The gas supply pipe (13) is inserted into the bottom of the purification liquid tank (10) and connected to a hollow jet disk (14). The top and bottom surfaces of the hollow jet disk (14) are provided with several uniformly spaced jet holes (17). The bottom of the primary filter box (20) is inserted and fixed to the top of the air supply pipe (13). A primary filter screen (23) with a U-shaped cross section is installed inside the primary filter box (20). A sealing cover (22) is provided on the top of the primary filter box (20). An air inlet pipe (21) is connected to the sealing cover (22). The top center of the secondary filter box (30) is connected to the exhaust pipe (11) through the air supply pipe (31). The secondary filter box (30) is provided with an activated carbon filter layer (32), a cold catalyst filter layer (33) and a high-efficiency HEPA filter layer (34) from top to bottom. An air outlet pipe (35) is installed at the bottom of the secondary filter box (30).

2. The multi-stage filtration assembly for waste gas treatment in the environmental protection cabinet according to claim 1, characterized in that: The purification liquid tank (10) has an inlet / outlet pipe (12) with a valve installed on one side of its outer wall for inputting or discharging purification liquid.

3. The multi-stage filtration assembly for waste gas treatment in the environmental protection cabinet according to claim 1, characterized in that: The purification liquid tank (10) has a built-in purification liquid area (15), and the hollow jet disk (14) is immersed in the purification liquid area (15).

4. The multi-stage filtration assembly for waste gas treatment in the environmental protection cabinet according to claim 3, characterized in that: A gap of 20-30cm is left between the liquid level of the purification liquid area (15) and the top of the purification liquid tank (10).

5. The multi-stage filtration assembly for waste gas treatment in the environmental protection cabinet according to claim 1, characterized in that: One end of the hollow jet disc (14) is fitted with a connector (16) that is vertically inserted into the bottom of the gas pipe (13).

6. The multi-stage filtration assembly for waste gas treatment in the environmental protection cabinet according to claim 1, characterized in that: The top edge of the primary filter screen (23) is fitted with a square sealing gasket (24).

7. The multi-stage filtration assembly for waste gas treatment in the environmental protection cabinet according to claim 1, characterized in that: The purification liquid tank (10) and the secondary filter box (30) are connected as a whole, and support columns (40) are installed at the four top corners of the bottom.

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