Plastic box production waste gas treatment device

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a plastic box production waste gas treatment device. According to the technical scheme, the device comprises a reaction tank, a mixing pipe is fixedly connected to the position, close to the upper surface, of the outer surface of the reaction tank, a waste gas pipe and an agent pipe are fixedly connected to the tail end of the mixing pipe, a spray head is fixedly connected to the end, located in the mixing pipe, of the agent pipe, and an agent adjusting valve is fixedly connected to the tail end of the agent pipe; a liquid flow meter is fixedly mounted on the outer surface of the medicament pipe, a gas regulating valve is fixedly connected to the tail end of the waste gas pipe, a gas flow meter is fixedly mounted on the outer surface of the waste gas pipe, and a PLC is fixedly mounted on the outer surface of the reaction tank. In the spraying treatment process of the waste gas produced by the plastic box, the spraying quantity of a treatment agent can be automatically adjusted according to the fluctuation of the conveying quantity of the waste gas, so that harmful substances in the waste gas are thoroughly purified, and the cost of the treatment agent is favorably reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for plastic box production. Background Technology

[0002] Plastic crates are containers made of plastic and are widely used in logistics, warehousing, and transportation. However, the production process of plastic crates generates a large amount of harmful waste gas, which needs to be treated before it can be released to avoid causing air pollution.

[0003] Currently, in the process of treating waste gas from plastic box production with chemical spraying, the spraying volume cannot be automatically adjusted to accommodate fluctuations in the waste gas input. This can easily lead to incomplete treatment of harmful substances in the waste gas, resulting in emissions that fail to meet standards and pollute the atmosphere. To address this, we propose a waste gas treatment device for plastic box production. Utility Model Content

[0004] The purpose of this invention is to provide a waste gas treatment device for plastic box production. During the waste gas spraying treatment process, the device can automatically adjust the spray volume of the treatment agent according to fluctuations in the waste gas supply, ensuring thorough purification of harmful substances in the waste gas. This also helps reduce the cost of the treatment agent. It solves the problem that in current waste gas spraying treatments for plastic box production, the spray volume cannot be automatically adjusted to accommodate fluctuations in the waste gas input, leading to incomplete treatment of harmful substances and resulting in emissions that fail to meet standards and pollute the atmosphere.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste gas treatment device for plastic box production, comprising a reaction tank, a mixing pipe fixedly connected to the outer surface of the reaction tank near the upper surface, a waste gas pipe and a reagent pipe fixedly connected to the end of the mixing pipe, a nozzle fixedly connected to one end of the reagent pipe inside the mixing pipe, a reagent regulating valve fixedly connected to the end of the reagent pipe, a liquid flow meter fixedly installed on the outer surface of the reagent pipe, a gas regulating valve fixedly connected to the end of the waste gas pipe, a gas flow meter fixedly installed on the outer surface of the waste gas pipe, a PLC fixedly installed on the outer surface of the reaction tank, and an outlet pipe fixedly installed at the axial position of the upper surface of the reaction tank, with the two ends of the outlet pipe located inside and outside the reaction tank, respectively.

[0006] Preferably, the liquid flow meter, the reagent regulating valve, the gas regulating valve, and the gas flow meter are all electrically connected to the PLC.

[0007] Preferably, a demister is fixedly installed inside the air outlet pipe.

[0008] Preferably, a spiral blade is fixedly installed inside the reaction vessel, and the spiral blade is spirally wound around the outer surface of the gas outlet pipe.

[0009] Preferably, a mounting base is fixedly installed on the lower surface of the reaction vessel.

[0010] Preferably, a drain valve is fixedly connected to the outer surface of the reaction vessel near the lower surface.

[0011] Preferably, a level gauge is fixedly installed at the bottom of the inner wall of the reaction vessel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up a reaction tank, an outlet pipe, a mixing pipe, a reagent pipe, a liquid flow meter, a reagent regulating valve, an exhaust pipe, a gas flow meter, a gas regulating valve, and a PLC, achieves the ability to automatically adjust the spray volume of the treatment agent according to fluctuations in the exhaust gas flow rate during the waste gas spraying treatment process in plastic box production. This ensures thorough purification of harmful substances in the waste gas and helps reduce the cost of treatment agents. Waste from plastic box production is discharged into the mixing pipe through the exhaust pipe, while the treatment agent is transported to the nozzle through the reagent pipe and sprayed into the mixing pipe, mixing with the waste. The waste gas mixed with the treatment agent enters the reaction tank, and the purified gas is discharged from the outlet pipe. The gas flow meter monitors the input waste gas volume, and the monitoring signal is transmitted to the PLC. The PLC controls the opening of the chemical regulating valve based on the fluctuations in the waste gas volume, thereby controlling the input amount of the treatment agent to adapt to the fluctuations in the waste gas volume. This ensures that there is sufficient treatment agent to spray and treat the waste gas. When the opening of the treatment agent regulating valve is already at its maximum and the input amount of treatment agent cannot adapt to the input amount of waste gas, the PLC can control the gas regulating valve to reduce its opening to make the input amount of waste gas and treatment agent match. In addition, the liquid flow meter monitors the fluctuations in the input amount of treatment agent, and the PLC controls the opening of the chemical regulating valve based on the fluctuations to make the input amount of waste gas and treatment agent match.

[0014] 2. This utility model improves the waste gas treatment effect by setting spiral blades. The spiral blades form a spiral flow channel between the outer surface of the exhaust pipe and the inner wall of the reaction tank, thereby prolonging the contact reaction time between the waste gas and the reagent, which is beneficial to purifying harmful substances in the waste gas. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the main sectional structure of this utility model;

[0017] Figure 3 This is a top view of the structure of this utility model.

[0018] Reference numerals in the attached diagram: 1. Mounting base; 2. PLC; 3. Chemical tube; 4. Liquid flow meter; 5. Chemical regulating valve; 6. Gas regulating valve; 7. Gas flow meter; 8. Exhaust gas pipe; 9. Mixing pipe; 10. Outlet pipe; 11. Reaction tank; 12. Nozzle; 13. Spiral blade; 14. Demister; 15. Drain valve; 16. Level gauge. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] like Figures 1-3 As shown, this utility model proposes a waste gas treatment device for plastic box production, including a reaction tank 11. A mixing pipe 9 is fixedly connected to the outer surface of the reaction tank 11 near the upper surface. A waste gas pipe 8 and a reagent pipe 3 are fixedly connected to the end of the mixing pipe 9. Waste gas from plastic box production is discharged into the mixing pipe 9 through the waste gas pipe 8, while the treatment reagent is transported into the mixing pipe 9 through the reagent pipe 3. A nozzle 12 is fixedly connected to one end of the reagent pipe 3 inside the mixing pipe 9. A reagent regulating valve 5 is fixedly connected to the end of the reagent pipe 3. A liquid flow meter 4 is fixedly installed on the outer surface of the reagent pipe 3. The detection probe of the liquid flow meter 4 is located inside the reagent pipe 3 and is used to monitor the flow rate of the treatment reagent inside the reagent pipe 3. A nozzle 12 is fixedly connected to the end of the waste gas pipe 8. Gas regulating valve 6, reagent regulating valve 5, and gas regulating valve 6 are all electric valves. A gas flow meter 7 is fixedly installed on the outer surface of the exhaust pipe 8. The detection probe of the gas flow meter 7 is located inside the exhaust pipe 8 and is used to monitor the exhaust gas flow rate inside the exhaust pipe 8. A PLC2 is fixedly installed on the outer surface of the reaction tank 11. The liquid flow meter 4, reagent regulating valve 5, gas regulating valve 6, and gas flow meter 7 are all electrically connected to the PLC2. An exhaust pipe 10 is fixedly installed at the axial position on the upper surface of the reaction tank 11, and the two ends of the exhaust pipe 10 are located inside and outside the reaction tank 11, respectively. A demister 14 is fixedly installed inside the exhaust pipe 10. The purified exhaust gas is discharged from the exhaust pipe 10 and the water vapor in the exhaust gas is removed by the demister 14.

[0022] In use, waste from the production of plastic boxes is discharged into the mixing pipe 9 through the exhaust pipe 8. The treatment agent is transported to the nozzle 12 through the agent pipe 3 and sprayed into the mixing pipe 9, where it mixes with the waste. The waste gas mixed with the treatment agent enters the reaction tank 11, and the purified gas is discharged from the outlet pipe 10. The amount of waste gas input can be monitored by the gas flow meter 7, and the monitoring signal is transmitted to the PLC2. The PLC2 controls the opening of the agent regulating valve 5 based on the fluctuations in the waste gas flow, thus controlling the treatment process. The input amount of the treatment agent is adjusted to adapt to the fluctuations in the waste gas delivery volume, so that there is sufficient treatment agent to spray and treat the waste gas. When the opening of the treatment agent regulating valve 5 is adjusted to the maximum and the input amount of the treatment agent cannot adapt to the input amount of the waste gas, the PLC2 can control the gas regulating valve 6 to reduce its opening so that the input amount of the waste gas and the input amount of the treatment agent are adapted to each other. The liquid flow meter 4 monitors the fluctuations in the input amount of the treatment agent, and the PLC2 controls the opening of the treatment agent regulating valve 5 according to the fluctuations so that the input amount of the waste gas and the input amount of the treatment agent are adapted to each other.

[0023] Example 2

[0024] like Figures 1-3 As shown, the present invention proposes a waste gas treatment device for plastic box production. Compared with Embodiment 1, this embodiment further includes a spiral blade 13 fixedly installed inside the reaction tank 11, and the spiral blade 13 is spirally wound around the outer surface of the exhaust pipe 10. A fixing seat 1 is fixedly installed on the lower surface of the reaction tank 11. A drain valve 15 is fixedly connected to the outer surface of the reaction tank 11 near the lower surface. The drain valve 15 is an electric valve, which discharges the treatment agent collected inside the reaction tank 11. A level gauge 16 is fixedly installed at the bottom of the inner wall of the reaction tank 11. The level gauge 16 is electrically connected to the PLC2. The level gauge 16 monitors the liquid level inside the reaction tank 11, and the monitoring signal is transmitted to the PLC2. The PLC2 controls the opening and closing of the drain valve 15 according to the liquid level signal to discharge the treatment agent collected inside the reaction tank 11 in a timely manner.

[0025] In this embodiment, the spiral blade 13 forms a spiral flow channel between the outer surface of the exhaust pipe 10 and the inner wall of the reaction vessel 11, thereby prolonging the contact reaction time between the exhaust gas and the reagent, which is beneficial for purifying harmful substances in the exhaust gas.

[0026] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A waste gas treatment device for plastic box production, comprising a reaction tank (11), characterized in that: A mixing pipe (9) is fixedly connected to the outer surface of the reaction vessel (11) near the upper surface. An exhaust pipe (8) and a reagent pipe (3) are fixedly connected to the end of the mixing pipe (9). A nozzle (12) is fixedly connected to one end of the reagent pipe (3) inside the mixing pipe (9). A reagent regulating valve (5) is fixedly connected to the end of the reagent pipe (3). A liquid flow meter (4) is fixedly installed on the outer surface of the reagent pipe (3). A gas regulating valve (6) is fixedly connected to the end of the exhaust pipe (8). A gas flow meter (7) is fixedly installed on the outer surface of the exhaust pipe (8). A PLC (2) is fixedly installed on the outer surface of the reaction vessel (11). An outlet pipe (10) is fixedly installed at the axial position on the upper surface of the reaction vessel (11), and the two ends of the outlet pipe (10) are located inside and outside the reaction vessel (11), respectively.

2. The waste gas treatment device for plastic box production according to claim 1, characterized in that: The liquid flow meter (4), the reagent regulating valve (5), the gas regulating valve (6) and the gas flow meter (7) are all electrically connected to the PLC (2).

3. The waste gas treatment device for plastic box production according to claim 1, characterized in that: A demister (14) is fixedly installed inside the air outlet pipe (10).

4. The waste gas treatment device for plastic box production according to claim 1, characterized in that: The reaction vessel (11) is fixedly installed with a spiral blade (13), and the spiral blade (13) is spirally wound around the outer surface of the gas outlet pipe (10).

5. The waste gas treatment device for plastic box production according to claim 1, characterized in that: A mounting base (1) is fixedly installed on the lower surface of the reaction vessel (11).

6. The waste gas treatment device for plastic box production according to claim 1, characterized in that: A drain valve (15) is fixedly connected to the outer surface of the reaction vessel (11) near the lower surface.

7. The waste gas treatment device for plastic box production according to claim 6, characterized in that: A level gauge (16) is fixedly installed at the bottom of the inner wall of the reaction vessel (11).

Images