VOC waste gas treatment device for coating production

Abstract

The utility model provides a VOC waste gas treatment device for coating production, which comprises a waste gas treatment box, treatment agent drain pipes, a medicament box and injection pipe orifices, the treatment agent drain pipes are symmetrically and fixedly mounted on two sides of the waste gas treatment box, the medicament box is fixedly mounted above the waste gas treatment box, and a plurality of injection pipe orifices are mounted on the medicament box; the waste gas treatment device disclosed by the utility model adopts a top-down spraying and parallel flowing mode and is combined with the gas blocking plate to prolong the residence time of waste gas and improve the treatment efficiency. The treatment agent drain pipe is ingenious in design, waste gas emission can be blocked, and full contact of agents is ensured. After the medicament is accumulated to reach the amount, an emission mechanism is started immediately, excessive accumulation is prevented, and the leakage risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and in particular relates to a VOC waste gas treatment device for paint production. Background Art

[0002] In the process of paint production, a large amount of volatile VOC organic waste gas will be produced. Volatile VOC organic waste gas has various impacts and harms on human health. Long-term exposure to volatile organic compounds or being in an environment with high volatile organic compound content will greatly damage human functions, resulting in the need to use waste gas treatment equipment to purify it.

[0003] At present, the waste gas treatment devices in the coating production process generally adopt a top-down spray purification method. In this design, the waste gas enters from the bottom of the device and then gradually flows upward. In this process, the waste gas comes into contact with the atomized agent and is purified. However, this treatment method has obvious defects. First, there is almost no obstruction to the flow of waste gas inside the device, resulting in a relatively short residence time in the device. This directly affects the contact time between the waste gas and the agent and the purification effect, making the waste gas treatment effect unsatisfactory. Secondly, when the agent is sprayed inside the device, part of the agent may be discharged together with the waste gas, which increases the risk of leakage of harmful substances that may be contained in the waste gas.

[0004] Therefore, it is very necessary to invent a VOC waste gas treatment device for paint production. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a VOC waste gas treatment device for paint production, including a waste gas treatment box, a treatment agent drain pipe, a medicine box and an injection nozzle, the waste gas treatment box is symmetrically fixed with the treatment agent drain pipe on both sides, the waste gas treatment box is fixedly installed above the waste gas treatment box, and a plurality of injection nozzles are installed on the medicine box;

[0006] The exhaust gas treatment box includes a chassis, a box cover, an exhaust gas pipe opening, an air blocking plate and a drain hole. The treatment agent drain pipes are symmetrically fixedly installed on both sides of the chassis, a reagent box is fixedly installed on the top of the chassis, box covers are fixedly installed at both ends of the chassis, and the exhaust gas pipe opening is installed on the box cover; the air blocking plate is fixedly installed inside the chassis, and the drain hole is opened below the inner wall of the chassis and is located on the inner side of the air blocking plate;

[0007] The treatment agent drain pipe includes a drain main pipe, a water inlet pipe port, a drain disc, a drain ball, a drain pipe port and a drain ball. The drain main pipe is fixedly connected to the chassis through the water inlet pipe port and is connected to the drain hole. A plurality of drain discs are fixedly installed inside the drain main pipe, and a drain ball is arranged on one side of the drain disc; either end of the drain main pipe is fixedly connected to the drain pipe port, and a drain ball is arranged inside the drain pipe port.

[0008] Preferably, the air baffles are fixedly installed on the inner wall of the chassis at an angle and are arranged in a staggered manner. The air baffles are located below the medicine spray head, and the medicine spray head is installed on the upper part of the interior of the chassis and is connected to the medicine box.

[0009] Preferably, a plurality of the hydrophobic discs and hydrophobic balls are arranged inside the hydrophobic main pipe, a through hole is opened below the hydrophobic disc, the through hole is located on one side of the hydrophobic ball and is blocked by the hydrophobic ball.

[0010] Preferably, the drain main pipe and the drain pipe opening are an integrated structure and present an "L"-shaped structure, and the water inlet pipe opening installed on the drain main pipe is located on one side of the drain tray.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] Although the waste gas treatment device of the utility model also adopts a top-down spraying method, it abandons the traditional bottom-up waste gas flow design and innovatively introduces a parallel flow method. This improvement cleverly combines the use of air blocking plates, which not only ensures the smooth flow of waste gas, but also significantly prolongs the residence time of waste gas in the device, thereby greatly improving the efficiency and effect of waste gas treatment. In addition, the design of the treatment agent drain pipe. Under normal operation, the treatment agent drain pipe can effectively block the discharge of waste gas and ensure that the waste gas is in full contact with the agent. However, when the accumulated agent reaches a certain dose, the treatment agent drain pipe will immediately start the discharge mechanism to quickly discharge the internal agent. This design not only prevents excessive accumulation of agents, but more importantly, after the agent is discharged, the treatment agent drain pipe will quickly close, again blocking the discharge of subsequent waste gas, thereby significantly reducing the risk of waste gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial cross-sectional structural schematic diagram of the utility model.

[0014] Figure 2 It is a partial cross-sectional structural schematic diagram of the treatment agent drain pipe of the utility model.

[0015] Figure 3 This utility model Figure 2 Schematic diagram of the local enlarged structure at A.

[0016] In the figure:

[0017] Exhaust gas treatment box 1, chassis 11, box cover 12, exhaust pipe outlet 13, air blocking plate 14, drain hole 15, treatment agent drain pipe 2, drain main pipe 21, water inlet pipe outlet 22, drain disc 23, drain ball 24, drain pipe outlet 25, drainage ball 26, medicine box 3, injection pipe outlet 4. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0019] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0020] As attached Figure 1 To Attachment Figure 3 As shown:

[0021] The utility model provides a VOC waste gas treatment device for paint production, comprising a waste gas treatment box 1, a treatment agent drain pipe 2, a medicine box 3 and an injection nozzle 4, wherein the treatment agent drain pipe 2 is symmetrically fixedly installed on both sides of the waste gas treatment box 1, a medicine box 3 is fixedly installed above the waste gas treatment box 1, and a plurality of injection nozzles 4 are installed on the medicine box 3, the medicine box 3 is used to store waste gas treatment agents, and the injection nozzles 4 are used to inject the agents into the medicine box 3.

[0022] The exhaust gas treatment box 1 includes a chassis 11, a box cover 12, an exhaust gas pipe opening 13, an air blocking plate 14 and a drain hole 15. The treatment agent drain pipes 2 are symmetrically fixedly installed on both sides of the chassis 11, and a reagent box 3 is fixedly installed above the chassis 11. The box cover 12 is fixedly installed at both ends of the chassis 11, and the exhaust gas pipe opening 13 is installed on the box cover 12; the air blocking plate 14 is fixedly installed inside the chassis 11, and the drain hole 15 is opened below the inner wall of the chassis 11 and is located on the inner side of the air blocking plate 14. The drain hole 15 is used to discharge the treatment agent during the exhaust gas treatment process to prevent the treatment agent from accumulating in the box.

[0023] The treatment agent drain pipe 2 includes a drain main pipe 21, a water inlet pipe port 22, a drain disc 23, a drain ball 24, a drain pipe port 25 and a drain ball 26. The drain main pipe 21 is fixedly connected to the chassis 11 through the water inlet pipe port 22 and is connected to the drain hole 15. A plurality of drain discs 23 are fixedly installed inside the drain main pipe 21, and a drain ball 24 is arranged on one side of the drain disc 23; either end of the drain main pipe 21 is fixedly connected to the drain pipe port 25, and a drain ball 26 is arranged inside the drain pipe port 25.

[0024] Embodiment 1:

[0025] Specifically, the air baffle plate 14 is fixedly installed on the inner wall of the chassis 11 at an angle and is arranged in a staggered manner. The air baffle plate 14 is located below the agent nozzle, and the agent nozzle is installed on the upper part of the interior of the chassis 11 and is connected to the agent box 3. The air baffle plate 14 is fixedly installed inside the chassis 11. Its design purpose is to better distribute and guide the flow path of the exhaust gas in the box to ensure that the exhaust gas is fully in contact and react with the treatment agent.

[0026] Specifically, a plurality of the hydrophobic discs 23 and the hydrophobic balls 24 are arranged inside the drain main pipe 21. A through hole is opened at the bottom of the hydrophobic disc 23. The through hole is located on one side of the hydrophobic ball 24 and is blocked by the hydrophobic ball 24. This design can hinder the treatment agent when it flows through the hydrophobic disc 23, so as to better distribute and treat it. The hydrophobic ball 24 and the drainage ball 26 will rise due to the buoyancy, thereby opening the through hole of the hydrophobic disc 23 or the drain pipe port 25.

[0027] Specifically, the drain main pipe 21 and the drain pipe opening 25 are an integrated structure and present an “L”-shaped structure. The water inlet pipe opening 22 installed on the drain main pipe 21 is located at one side of the drain plate 23 .

[0028] Embodiment 2:

[0029] First, the VOC waste gas generated during the paint production process enters the chassis 11 of the waste gas treatment box 1 through the waste gas pipe port 13. The waste gas is guided by the air blocking plate 14 inside the chassis 11 to form a specific flow path, which increases the contact time and area between the waste gas and the treatment agent. At the same time, the waste gas treatment agent in the agent box 3 is evenly sprayed into the waste gas through the injection nozzle 4 and the agent nozzle. The waste gas and the treatment agent are fully mixed and chemically reacted inside the chassis 11, converting harmful substances into harmless or low-harm substances. The treatment agent drain pipe 2 is responsible for collecting the treatment agent inside the chassis 11. The treatment agent enters the drain main pipe 21 through the water inlet pipe port 22. Inside the drain main pipe 21, when the moisture in the drain main pipe 21 and the drain pipe port 25 accumulates to a certain extent, due to the buoyancy, the drain ball 24 and the drain ball 26 will rise, thereby opening the through hole or drain pipe port 25 of the drain plate 23, so that the waste gas treatment agent is discharged outside.

[0030] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A VOC waste gas treatment device for paint production, characterized in that: It comprises an exhaust gas treatment box (1), a treatment agent drain pipe (2), a medicine box (3) and an injection nozzle (4), wherein the treatment agent drain pipe (2) is symmetrically fixedly installed on both sides of the exhaust gas treatment box (1), the medicine box (3) is fixedly installed above the exhaust gas treatment box (1), and a plurality of injection nozzles (4) are installed on the medicine box (3); The exhaust gas treatment box (1) comprises a chassis (11), a box cover (12), an exhaust gas pipe opening (13), an air blocking plate (14) and a drain hole (15); the treatment agent drain pipes (2) are symmetrically fixedly installed on both sides of the chassis (11); a reagent box (3) is fixedly installed above the chassis (11); the box covers (12) are fixedly installed at both ends of the chassis (11); the exhaust gas pipe opening (13) is installed on the box cover (12); the air blocking plate (14) is fixedly installed inside the chassis (11); the drain hole (15) is opened below the inner wall of the chassis (11) and is located on the inner side of the air blocking plate (14); The treatment agent drain pipe (2) comprises a drain main pipe (21), a water inlet pipe opening (22), a drain disc (23), a drain ball (24), a drain pipe opening (25) and a drain ball (26); the drain main pipe (21) is fixedly connected to the chassis (11) through the water inlet pipe opening (22) and is connected to the drain hole (15); a plurality of drain discs (23) are fixedly installed inside the drain main pipe (21); a drain ball (24) is arranged on one side of the drain disc (23); either end of the drain main pipe (21) is fixedly connected to the drain pipe opening (25); a drain ball (26) is arranged inside the drain pipe opening (25).

2. A VOC waste gas treatment device for coating production as claimed in claim 1, characterized in that: The air blocking plates (14) are fixedly installed on the inner wall of the chassis (11) at an angle and are arranged in a staggered manner. The air blocking plates (14) are located below the medicine spray head, which is installed on the upper part of the chassis (11) and connected to the medicine box (3).

3. A VOC waste gas treatment device for coating production as claimed in claim 1, characterized in that: A plurality of hydrophobic discs (23) and hydrophobic balls (24) are arranged inside the hydrophobic main pipe (21); a through hole is opened below the hydrophobic disc (23); the through hole is located on one side of the hydrophobic ball (24) and is blocked by the hydrophobic ball (24).

4. A VOC waste gas treatment device for coating production as claimed in claim 1, characterized in that: The drain main pipe (21) and the drain pipe opening (25) are an integrated structure and present an "L"-shaped structure. The water inlet pipe opening (22) installed on the drain main pipe (21) is located on one side of the drain plate (23).

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