RTO-RCO combined device for paint spraying exhaust gas

Abstract

The utility model relates to a paint spray exhaust gas treatment technical field, concretely for a kind of RTO-RCO combination device for paint spray exhaust gas, including RTO processing box and RCO processing box, the lower end of RTO processing box and RCO processing box is evenly provided with exhaust inlet pipe, the lower end of RTO processing box is provided with high exhaust pipe, the lower end of RCO processing box is provided with bottom exhaust pipe, high exhaust pipe and bottom exhaust pipe are connected with exhaust inlet pipe, one end of high exhaust pipe and bottom exhaust pipe is provided with air inlet structure, RCO processing box and RTO processing box are connected in parallel, different sources of exhaust gas can be handled separately, significantly improve purification effect, the effective connection between RTO processing box and RCO processing box, the purification process of waste gas is also optimized.

Description

Technical Field

[0001] This utility model relates to an RTO-RCO combined device for paint spraying exhaust gas, belonging to the field of paint spraying exhaust gas treatment technology. Background Technology

[0002] Spray painting exhaust gas refers to a mixture of volatile organic compounds, paint mist particles, and other harmful gases generated during the spray painting process. This type of exhaust gas poses a significant threat to the environment and human health and must be effectively treated before being released.

[0003] RTO (Regenerative Thermal Oxidizer) and RCO (Regenerative Catalytic Oxidizer) are two commonly used high-efficiency purification devices in industrial waste gas treatment. Both convert volatile organic compounds (VOCs) and odorous gases in waste gas into harmless CO2 and H2O through oxidation and decomposition, and are widely used in industries such as chemical engineering and coating and printing. While their core principles are similar, they differ in purification efficiency, energy consumption, and applicable scenarios.

[0004] RTO and RCO are common equipment for treating paint spraying exhaust gas. In existing paint spraying exhaust gas treatment, most treatments are carried out using a single RTO or RCO. However, the sources of paint spraying exhaust gas are different, and the concentration of exhaust gas sources varies significantly (e.g., high-concentration exhaust gas from the paint mixing room and low-concentration exhaust gas from the spray booth). Treating it with only a single RTO or RCO will result in serious waste of resources and poor treatment effect. Moreover, some harmful substances in the exhaust gas cannot be eliminated by simple high-temperature combustion, such as the residual low concentration of VOCs (e.g., aldehydes and benzene compounds) at the RTO outlet.

[0005] Therefore, there is an urgent need to improve an existing RTO-RCO combined unit for paint spraying exhaust gas in order to solve the aforementioned problems. Utility Model Content

[0006] The purpose of this invention is to provide an RTO-RCO combined device for paint spraying exhaust gas. This device addresses the problem that existing paint spraying exhaust gas treatment methods often rely on a single RTO or RCO. However, the exhaust gas is generated from different sources, resulting in significant differences in gas concentration (e.g., high-concentration exhaust gas from the paint mixing room vs. low-concentration exhaust gas from the spray booth). Treating this exhaust gas with only a single RTO or RCO would lead to serious resource waste and poor treatment results. Furthermore, some harmful substances in the exhaust gas cannot be eliminated by simple high-temperature combustion, such as the problem of residual low-concentration VOCs (e.g., aldehydes and benzene compounds) at the RTO outlet.

[0007] To achieve the above objectives, the main technical solution adopted by this utility model includes: an RTO-RCO combined device for paint spraying exhaust gas, comprising an RTO treatment box and an RCO treatment box, both of which are provided with exhaust gas inlet pipes at their lower ends; a high exhaust gas pipe is provided at the lower end of the RTO treatment box; a low exhaust gas pipe is provided at the lower end of the RCO treatment box; the high exhaust gas pipe and the low exhaust gas pipe are connected to the exhaust gas inlet pipe; one end of the high exhaust gas pipe and the low exhaust gas pipe is provided with an air intake structure; and an exhaust connection structure is provided between the RTO treatment box and the RCO treatment box.

[0008] A further feature of this invention is that both the RTO treatment box and the RCO treatment box are provided with a reflux branch pipe at their lower ends, and a reflux main pipe is provided at the lower end of the reflux branch pipe. One end of the reflux main pipe is connected to the high exhaust gas pipe and the low exhaust gas pipe.

[0009] A further feature of this invention is that the air intake structure includes an air outlet pipe, an air pump is installed at one end of the air outlet pipe, a dry filter is installed at the input end of the air pump, an air intake pipe is provided at the upper end of the dry filter, and control valves are provided on the surfaces of both the high exhaust pipe and the low exhaust pipe.

[0010] A further feature of this invention is that the emission connection structure includes a first purification branch pipe, which is installed at the lower end of the RTO treatment box. A first purification main pipe is installed at the lower end of the first purification branch pipe. One end of the first purification main pipe is connected to a low exhaust pipe, and an exhaust pipe is provided on one side of the first purification main pipe.

[0011] A further feature of this invention is that a second purification branch pipe is provided at the lower end of the RCO treatment box, a second purification main pipe is installed at the lower end of the second purification branch pipe, an exhaust pipe is provided on one side of the RTO treatment box and the RCO treatment box, and one end of the second purification main pipe and the exhaust pipe is connected to the exhaust pipe.

[0012] A further feature of this invention is that: heat exchangers are provided on the surfaces of both the first and second purification main pipes; a drain pipe is provided at the lower end of one side of the discharge pipe; and a spray structure is provided at the upper end of the interior of the discharge pipe.

[0013] A further feature of this invention is that the spray structure includes a spray plate, which is rotatably installed at the upper end inside the discharge pipe. The spray plate has a hollow structure, and exhaust holes are evenly distributed on the surface of the spray plate. Spray holes are distributed at the lower end of the spray plate. A water inlet pipe is inserted through one side of the discharge pipe, and the water inlet pipe is rotatably connected to the spray plate.

[0014] A further feature of this invention is that: a rotating ring is installed at the upper end of the spray disc, a transmission gear ring is provided on the outer ring of the rotating ring, a support block is installed at the upper end of one side of the discharge pipe, a driver is installed at the upper end of the support block, and a transmission gear that meshes with the transmission gear ring is installed at the output end of the driver.

[0015] This utility model has at least the following beneficial effects:

[0016] 1. In this utility model, a control system box can be set on the device to control and monitor the overall device and identify the source of exhaust gas inside the inlet pipe. When low-concentration exhaust gas enters the inlet pipe, the low-concentration exhaust pipe is opened, and the exhaust gas enters the low-concentration exhaust pipe through the air pump and the outlet pipe. Then, it enters the RCO treatment box through the exhaust gas inlet pipe for treatment. After treatment, it is discharged through the exhaust pipe. When high-concentration exhaust gas enters the inlet pipe, the high-concentration exhaust pipe is opened, and the exhaust gas enters the high-concentration exhaust pipe through the air pump and the outlet pipe. Then, it enters the RTO treatment box through the exhaust gas inlet pipe for treatment. This allows the RCO treatment box and the RTO treatment box to be set up in parallel, which can treat exhaust gas from different sources separately, significantly improving the purification effect.

[0017] 2. In this utility model, the effective connection between the RTO treatment box and the RCO treatment box also optimizes the waste gas purification process. The first purification branch pipe and the second purification branch pipe are respectively responsible for introducing the waste gas treated by the RTO treatment box and the RCO treatment box into the first purification main pipe and the second purification main pipe. When the RTO treatment box treats the waste gas, if the discharged waste gas achieves the emission effect, it can enter the interior of the emission pipe through the exhaust pipe for discharge. If the waste gas still has low concentration VOCs (such as aldehydes and benzene series compounds) after the RTO treatment box treats the waste gas, it can enter the interior of the low waste gas pipe through the second purification main pipe for further treatment by the RCO treatment box to enhance the purification effect. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a three-dimensional structural diagram of the device of this utility model;

[0020] Figure 2 This is a side view of the device structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the bottom structure of the device of this utility model;

[0022] Figure 4This is a schematic diagram of the internal structure of the discharge pipe in the device of this utility model in half section.

[0023] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0024] In the diagram, 100 is the RTO treatment box; 110 is the first purification branch pipe; 111 is the first purification main pipe; 112 is the control valve; 113 is the exhaust pipe; 120 is the return branch pipe; 121 is the return main pipe; 200 is the RCO treatment box; 210 is the second purification main pipe; 211 is the second purification branch pipe; 300 is the dry filter; 310 is the air inlet pipe; 320 is the air outlet pipe; 321 is the air pump; 330 is the low exhaust gas pipe; 340 is the high exhaust gas pipe; 341 is the exhaust gas inlet pipe; 400 is the discharge pipe; 410 is the spray plate; 411 is the exhaust port; 412 is the spray hole; 420 is the rotating ring; 421 is the transmission gear ring; 430 is the water inlet pipe; 440 is the support block; 441 is the transmission gear; 442 is the driver; and 500 is the heat exchanger. Detailed Implementation

[0025] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0026] like Figures 1 to 3 As shown, this embodiment provides an RTO-RCO combined device for paint spraying exhaust gas, including an RTO treatment box 100 and an RCO treatment box 200. Both the RTO treatment box 100 and the RCO treatment box 200 are provided with exhaust gas inlet pipes 341 at their lower ends. The RTO treatment box 100 is provided with a high exhaust gas pipe 340 at its lower end, and the RCO treatment box 200 is provided with a low exhaust gas pipe at its lower end. The high exhaust gas pipe 340 and the low exhaust gas pipe are connected to the exhaust gas inlet pipe 341. One end of the high exhaust gas pipe 340 and the low exhaust gas pipe is provided with an air intake structure, which includes an air outlet pipe 320. One end of the air outlet pipe 320 is equipped with an air pump 321. The input end of the air pump 321 is equipped with a dry filter 300. The upper end of the dry filter 300 is provided with an air inlet pipe 310. The surfaces of the high exhaust gas pipe 340 and the low exhaust gas pipe are both provided with control valves 112.

[0027] In this embodiment, a control system box can be installed on the device to control and monitor the overall device and identify the source of exhaust gas inside the inlet pipe 310. When low-concentration exhaust gas enters the inlet pipe 310, the low-concentration exhaust pipe 330 is opened, and the exhaust gas enters the interior of the low-concentration exhaust pipe 330 through the air pump 321 and the outlet pipe 320. Then, it enters the RCO treatment box 200 for treatment through the exhaust gas inlet pipe 341. After treatment, it is discharged through the discharge pipe 400.

[0028] When high-concentration exhaust gas enters the inlet pipe 310, the high-concentration exhaust pipe 340 is opened, and the gas enters the interior of the high-concentration exhaust pipe 340 through the air pump 321 and the outlet pipe 320, and then enters the interior of the RTO treatment box 100 through the exhaust gas inlet pipe 341, where it is treated.

[0029] like Figures 1 to 3 As shown in the figure, this embodiment provides an RTO-RCO combined device for paint spraying exhaust gas. The lower ends of both the RTO treatment box 100 and the RCO treatment box 200 are provided with return branch pipes 120. The lower end of the return branch pipe 120 is provided with a return main pipe 121. One end of the return main pipe 121 is connected to the high exhaust gas pipe 340 and the low exhaust gas pipe.

[0030] In this embodiment, to facilitate the reintroduction of incompletely treated waste gas into the corresponding high-emission pipe 340 or low-emission pipe 330 via the return branch pipe 120 and the return main pipe 121 during the waste gas treatment process, this design ensures thorough treatment of the waste gas and improves the efficiency and quality of waste gas treatment. Simultaneously, the arrangement of the return branch pipe 120 and the return main pipe 121 also increases the flexibility and reliability of the device, enabling it to be adaptively adjusted according to different waste gas concentrations and treatment requirements.

[0031] like Figures 1 to 3 As shown in the figure, this embodiment provides an RTO-RCO combined device for paint spraying exhaust gas. An exhaust connection structure is provided between the RTO treatment box 100 and the RCO treatment box 200. The exhaust connection structure includes a first purification branch pipe 110, which is installed at the lower end of the RTO treatment box 100. A first purification main pipe 111 is installed at the lower end of the first purification branch pipe 110. One end of the first purification main pipe 111 is connected to the low exhaust gas pipe 330. An exhaust pipe 113 is provided on one side of the first purification main pipe 111. A second purification branch pipe 211 is provided at the lower end of the RCO treatment box 200. A second purification main pipe 210 is installed at the lower end of the second purification branch pipe 211. An exhaust pipe 400 is provided on one side of the RTO treatment box 100 and the RCO treatment box 200. One end of the second purification main pipe 210 and the exhaust pipe 113 are connected to the exhaust pipe 400.

[0032] In this embodiment, such an emission connection structure design not only achieves an effective connection between the RTO treatment box 100 and the RCO treatment box 200, but also optimizes the exhaust gas purification process. The first purification branch pipe 110 and the second purification branch pipe 211 are respectively responsible for introducing the exhaust gas treated by the RTO treatment box 100 and the RCO treatment box 200 into the first purification main pipe 111 and the second purification main pipe 210. After the RTO treatment box 100 treats the exhaust gas, if the emitted exhaust gas achieves the emission effect, it can enter the interior of the emission pipe 400 through the exhaust pipe 113 for emission. If the exhaust gas still contains low concentrations of VOCs (such as aldehydes and benzene compounds) after the RTO treatment box 100 treats the exhaust gas, it enters the interior of the low exhaust gas pipe 330 through the second purification main pipe 210 and is further treated by the RCO treatment box 200 to enhance the purification effect.

[0033] The first purification main pipe 111 and the second purification main pipe 210 are both equipped with heat exchangers 500, and a drain pipe is provided at the lower end of one side of the discharge pipe 400. The heat exchangers 500 can make full use of the waste heat in the exhaust gas, improve energy efficiency, and also help to further cool and purify the exhaust gas. The exhaust pipe 113 and the discharge pipe 400 ensure that the purified exhaust gas can be discharged smoothly from the device, while the addition of the drain pipe can remove any water that may accumulate inside the device in time, keep the inside of the device dry and clean, and further improve the efficiency and quality of exhaust gas treatment.

[0034] like Figure 4 and Figure 5 As shown in this embodiment, an RTO-RCO combined device for paint spraying exhaust gas is provided. A spray structure is provided at the upper end of the exhaust pipe 400. The spray structure includes a spray disc 410, which is rotatably mounted inside the upper end of the exhaust pipe 400. The spray disc 410 is hollow, and exhaust holes 411 are evenly distributed on its surface. Spray holes 412 are provided at the lower end of the spray disc 410. A water inlet pipe 430 is inserted through one side of the exhaust pipe 400 and is rotatably connected to the spray disc 410. A rotating ring 420 is installed at the upper end of the spray disc 410, and a transmission gear ring 421 is provided on the outer ring of the rotating ring 420. A support block 440 is installed at the upper end of one side of the exhaust pipe 400, and a driver 442 is installed at the upper end of the support block 440. A transmission gear 441 that meshes with the transmission gear ring 421 is installed at the output end of the driver 442.

[0035] In this embodiment, during operation, the driver 442 is activated, which drives the transmission gear 441 to rotate. The transmission gear 441 drives the transmission gear ring 421 to rotate, which in turn drives the rotating ring 420 to rotate. The rotating ring 420 then drives the spray disc 410 to rotate. At this time, water is injected into the spray disc 410 through the water inlet pipe 430. The water is sprayed evenly through the spray holes 412 to purify the emitted gas. When the water vapor comes into contact with the spray disc 410, it can condense the high-temperature water vapor into water droplets for collection, avoiding the need for water recycling. At the same time, the rotation of the spray disc 410 makes the spray range wider, improving the purification effect. The exhaust hole 411 allows the gas to be discharged evenly, preventing the gas from accumulating inside the exhaust pipe 400, further improving the purification efficiency.

[0036] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

Claims

1. An RTO-RCO combined device for paint spraying exhaust gas, comprising an RTO treatment chamber (100) and an RCO treatment chamber (200), characterized in that: Both the RTO treatment box (100) and the RCO treatment box (200) are equipped with exhaust gas inlet pipes (341) at their lower ends. The RTO treatment box (100) is equipped with a high exhaust gas pipe (340) at its lower end, and the RCO treatment box (200) is equipped with a low exhaust gas pipe at its lower end. The high exhaust gas pipe (340) and the low exhaust gas pipe are connected to the exhaust gas inlet pipe (341). One end of the high exhaust gas pipe (340) and the low exhaust gas pipe is equipped with an air intake structure. An exhaust connection structure is provided between the RTO treatment box (100) and the RCO treatment box (200).

2. The RTO-RCO combined device for paint spraying exhaust gas according to claim 1, characterized in that: Both the RTO treatment box (100) and the RCO treatment box (200) are equipped with a return branch pipe (120) at their lower ends. The lower end of the return branch pipe (120) is equipped with a return main pipe (121). One end of the return main pipe (121) is connected to the high exhaust gas pipe (340) and the low exhaust gas pipe.

3. The RTO-RCO combined device for paint spraying exhaust gas according to claim 1, characterized in that: The air intake structure includes an air outlet pipe (320), an air pump (321) is installed at one end of the air outlet pipe (320), a dry filter (300) is installed at the input end of the air pump (321), an air inlet pipe (310) is provided at the upper end of the dry filter (300), and control valves (112) are provided on the surfaces of the high exhaust pipe (340) and the low exhaust pipe.

4. The RTO-RCO combined device for paint spraying exhaust gas according to claim 1, characterized in that: The emission connection structure includes a first purification branch pipe (110), which is installed at the lower end of the RTO treatment box (100). A first purification main pipe (111) is installed at the lower end of the first purification branch pipe (110). One end of the first purification main pipe (111) is connected to the low exhaust gas pipe (330), and an exhaust pipe (113) is provided on one side of the first purification main pipe (111).

5. The RTO-RCO combined device for paint spraying exhaust gas according to claim 4, characterized in that: The lower end of the RCO treatment box (200) is provided with a second purification branch pipe (211), and the lower end of the second purification branch pipe (211) is equipped with a second purification main pipe (210). An exhaust pipe (400) is provided on one side of the RTO treatment box (100) and the RCO treatment box (200). One end of the second purification main pipe (210) and the exhaust pipe (113) is connected to the exhaust pipe (400).

6. The RTO-RCO combined device for paint spraying exhaust gas according to claim 5, characterized in that: The surfaces of the first purification main pipe (111) and the second purification main pipe (210) are both provided with heat exchangers (500), the lower end of one side of the discharge pipe (400) is provided with a drain pipe, and the upper end of the interior of the discharge pipe (400) is provided with a spray structure.

7. The RTO-RCO combined device for paint spraying exhaust gas according to claim 6, characterized in that: The spray structure includes a spray plate (410), which is rotatably installed inside the upper end of the discharge pipe (400). The spray plate (410) is a hollow structure. The surface of the spray plate (410) is evenly provided with exhaust holes (411). The lower end of the spray plate (410) is provided with spray holes (412). A water inlet pipe (430) is inserted through one side of the discharge pipe (400). The water inlet pipe (430) is rotatably connected to the spray plate (410).

8. The RTO-RCO combined device for paint spraying exhaust gas according to claim 7, characterized in that: A rotating ring (420) is installed on the upper end of the spray disc (410), and a transmission gear ring (421) is provided on the outer ring of the rotating ring (420). A support block (440) is installed on the upper end of one side of the discharge pipe (400), and a driver (442) is installed on the upper end of the support block (440). A transmission gear (441) that meshes with the transmission gear ring (421) is installed on the output end of the driver (442).

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