VOCs waste gas treatment equipment

Abstract

The utility model discloses VOCs (volatile organic compounds) waste gas treatment equipment which comprises a main body and a control module, and the main body is provided with a universal telescopic gas collection pipeline, a dual-channel PID (proportion integration differentiation) detection module and an exhaust port; one end of the universal telescopic gas collecting pipeline is provided with a gas collecting hood, and the other end of the universal telescopic gas collecting pipeline is communicated with the interior of the main body; a filtering unit and an adsorption unit are arranged in the main body; a gas exhaust pipe is arranged in an area between the adsorption unit and the main body, and an exhaust fan is arranged on the gas exhaust pipe. A second gas collecting pipe is arranged on the inner side of the exhaust port; the dual-channel PID detection module and the exhaust fan are electrically connected with the control module; compared with the VOCs treatment equipment, the VOCs waste gas treatment equipment disclosed by the utility model has the advantages that the waste gas emission condition can be monitored in real time, the working mode is automatically adjusted according to the VOCs concentration change, the instant starting and efficient operation of the equipment are realized, and invalid treatment and energy waste are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and in particular relates to a VOCs waste gas treatment device. Background Technology

[0002] Existing VOCs treatment equipment is typically used for organized emissions or collected unorganized VOCs emissions from production workshops and production lines. These emissions are generally large-volume and continuous, resulting in bulky equipment that occupies a large area and is installed on the ground or rooftop, making it immobile. However, for processes like auto repair, ink roller cleaning in printing, parts cleaning in machinery manufacturing, and road marking, where VOCs emissions are short-term and intermittent, and the operating space is limited and location is not fixed, current VOCs treatment equipment, if used for collecting and treating these types of emissions, suffers from significant time and space wastage due to the distance between the collection port and the emission point. This results in low collection efficiency and high treatment costs.

[0003] Furthermore, existing VOCs treatment equipment is generally controlled manually for start-up and shutdown, based on the start-up and shutdown times of production operations. This is suitable for industrial enterprises with long-term production operations, but not for processes with uncertain operating durations and frequent start-ups and shutdowns. Keeping the treatment equipment running continuously results in significant idle time and energy waste. Manually controlling the start-up and shutdown of the equipment based on production operations increases workload considerably and can lead to delayed equipment startup, resulting in ineffective VOCs collection and treatment. Utility Model Content

[0004] In view of the shortcomings in the above-mentioned background technology, the present invention aims to provide a VOCs waste gas treatment device, which solves the problems of high energy consumption and low gas collection efficiency of existing VOCs treatment devices when treating small volumes of intermittently emitted VOCs waste gas.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0006] A VOCs exhaust gas treatment device is provided, including a main body and a control module. A universal telescopic gas collection pipe and a dual-channel PID detection module are provided on the outer wall of one side of the main body, and an exhaust port is provided on the outer wall of the other side of the main body.

[0007] One end of the universal telescopic gas collection pipe is equipped with a gas collection hood, and the other end is connected to the interior of the main body; a first gas collection pipe is installed inside the universal telescopic gas collection pipe;

[0008] The main body contains a filtration unit and an adsorption unit arranged sequentially from left to right. The other end of the universal telescopic gas collection pipe connects to the area between the filtration unit and the main body. A gas exhaust pipe is located in the area between the adsorption unit and the main body, and an exhaust fan is mounted on the gas exhaust pipe. The end of the gas exhaust pipe connects to the exhaust port. A second gas collection pipe is located inside the gas exhaust pipe. The first gas collection pipe and the second gas exhaust pipe are respectively connected to the dual-channel PID detection module. A filter device is mounted on the first gas collection pipe to filter and dehumidify the gas in the first gas collection pipe, preventing clogging of the dual-channel PID detection module.

[0009] Both the dual-channel PID detection module and the exhaust fan are electrically connected to the control module.

[0010] Furthermore, the filtration unit includes primary and secondary filter materials horizontally spaced within the main body. Both primary and secondary filter materials include a first metal frame within the main body, and a filter plate is movably mounted within each first metal frame. The cross-section of each filter plate is the same as the cross-section inside the main body. The other end of the gas collection pipe communicates with the area between the primary filter material and the main body. Specifically, the filter plate is made of metal wire mesh or porous fabric. The pore sizes of the filter plates in the primary and secondary filter materials are different; the primary filter material has relatively larger pores, enabling it to filter coarse particles, while the secondary filter material has relatively smaller pores, enabling it to filter fine particles.

[0011] Furthermore, the adsorption unit includes a second metal frame disposed inside the main body, within which an adsorption material is movably disposed. Specifically, the adsorption material is made of activated carbon or zeolite. The cross-section of the adsorption material is the same as the cross-section inside the main body.

[0012] Furthermore, both the first and second metal frames have a notch extending through the top of the main body, through which the filter plate and adsorption material are respectively disposed within the first and second metal frames. When replacing the filter unit and adsorption unit, they can be replaced by removing the first and second metal frames from the main body.

[0013] Furthermore, the main body is equipped with omnidirectional casters at the bottom, allowing for easy movement of the VOCs waste gas treatment equipment and improving operational flexibility. The hood opening can be circular, elliptical, or rectangular. Made of stainless steel, the hood opening type can be selected based on the waste gas emission point. The hood opening area should be slightly larger than the production operating surface. The hood and gas collection pipe are connected via quick-connect couplings for easy assembly and disassembly.

[0014] Furthermore, the wind speed at the cross-section of the air collection hood opening is 0.4 m / s to 0.5 m / s.

[0015] Furthermore, the control module includes a controller, a control panel, and a main switch that are electrically connected to each other and mounted on the main body; pressure sensors are installed on the front and rear sides of both the primary and secondary filter materials; a timer is installed inside the adsorption unit; both the pressure sensors and the timer are electrically connected to the controller; the control panel has display areas and indicator lights; the display areas include a gas concentration display area before purification, a gas concentration display area after purification, a primary pressure difference display area, and a secondary pressure difference display area; the indicator lights include a start indicator light, an adsorption unit replacement indicator light, a primary filter material replacement indicator light, and a secondary filter material replacement indicator light, all electrically connected to the controller.

[0016] The main switch is used to start the entire VOCs exhaust gas treatment equipment, and the start indicator light indicates the on / off status of the main switch. The dual-channel PID detection module monitors the exhaust gas concentration at the emission point and displays it in real-time via the pre-purification concentration display area. The dual-channel PID detection module also monitors the gas concentration at the exhaust port and displays it in real-time via the post-purification concentration display area. Pressure sensors monitor the pressure difference between the front and rear sides of the primary and secondary filter materials. This pressure difference is displayed in the primary and secondary pressure difference display areas, and the pressure difference can be used to determine whether to replace the primary and secondary filter materials. When the primary and secondary filter materials reach the end of their service life, replacement indicators for primary and secondary filter material replacement will remind the user to replace them. A timer is used to time the service life of the adsorption unit, and replacement indicators for adsorption unit replacement will remind the user to replace it when it reaches the end of its service life.

[0017] The beneficial effects of the utility model are:

[0018] 1. The VOCs waste gas treatment equipment of this utility model, compared with VOCs treatment equipment, can monitor the waste gas emission in real time, automatically adjust the working mode according to the changes in VOCs concentration, realize the immediate start-up and efficient operation of the equipment, and avoid ineffective treatment and energy waste.

[0019] 2. The VOCs waste gas treatment equipment in this utility model can be moved by setting universal pulleys, which improves the flexibility of use; by setting universal telescopic gas collection pipe and gas collection hood, the length and direction can be adjusted as needed to ensure that the gas collection port is close to the waste gas emission point, thereby maximizing the waste gas collection efficiency and reducing air mixing.

[0020] 3. The VOCs waste gas treatment equipment of this utility model can monitor the usage status of the filter unit and the adsorption unit online without the need for manual monitoring, and facilitates timely replacement of the filter unit and the adsorption unit. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a VOCs waste gas treatment device.

[0022] Figure 2 A schematic diagram of the internal structure of the main body.

[0023] Figure 3 This is a schematic diagram of the control panel.

[0024] The components include: 1. Main body; 2. Universal telescopic gas collection pipe; 3. Dual-channel PID detection module; 4. Exhaust port; 5. Gas collection hood; 6. First gas collection pipe; 7. Filter unit; 701. Primary filter material; 702. Secondary filter material; 8. Adsorption unit; 9. Gas exhaust pipe; 91. Secondary gas collection pipe; 10. Exhaust fan; 11. Universal casters; 12. Control panel; 13. Main switch; 14. Gas concentration display area before purification; 15. Gas concentration display area after purification; 16. Primary pressure difference display area; 17. Secondary pressure difference display area; 18. Start indicator light; 19. Adsorption unit replacement indicator light; 20. Primary filter material replacement indicator light; 21. Secondary filter material replacement indicator light. Detailed Implementation

[0025] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0026] like Figures 1-3 As shown, this utility model provides a VOCs waste gas treatment device, which includes a main body 1 and a control module. A universal telescopic gas collection pipe 2 and a dual-channel PID detection module 3 are provided on the outer wall of one side of the main body 1, and an exhaust port 4 is provided on the outer wall of the other side of the main body 1. A gas collection hood 5 is provided at one end of the universal telescopic gas collection pipe 2, and the other end is connected to the interior of the main body 1. A first gas collection pipe 6 is provided inside the universal telescopic gas collection pipe 2. The universal telescopic gas collection pipe 2 and the gas collection hood 5 can be adjusted in length and direction as needed to ensure that the gas collection port is close to the waste gas emission point, thereby maximizing the waste gas collection efficiency and reducing air mixing.

[0027] Inside the main body 1, from left to right, are arranged a filter unit 7 and an adsorption unit 8; the other end of the universal telescopic gas collection pipe 2 is connected to the area between the filter unit 7 and the main body 1; a gas exhaust pipe 9 is arranged in the area between the adsorption unit 8 and the main body 1; a fan 10 is installed on the gas exhaust pipe 9; the end of the gas exhaust pipe 9 is connected to the exhaust port 4; a second gas collection pipe 91 is arranged inside the gas exhaust pipe 9; the first gas collection pipe 6 and the second gas exhaust pipe 91 are respectively connected to the dual-channel PID detection module 3.

[0028] Both the dual-channel PID detection module 3 and the exhaust fan 10 are electrically connected to the control module.

[0029] The basic principle of this VOCs waste gas treatment device is as follows: The main body 1 is moved to the vicinity of the waste gas emission point, and the universal telescopic gas collection pipe 2 is adjusted so that the gas collection hood 5 at its end is aligned with the waste gas emission point. The dual-channel PID detection module 33 collects the VOCs concentration value of the gas in the air in real time and transmits the collected VOCs concentration value to the control module; the control module obtains the VOCs concentration value of the gas in the air in real time. When the VOCs concentration value of the gas in the air is greater than the preset value, it determines that waste gas has appeared in the environment and the control module starts the exhaust fan 10 to work; otherwise, the exhaust fan 10 does not work. The exhaust fan 10 generates negative pressure, which adsorbs the waste gas into the main body through the gas collection hood 5 and the universal telescopic gas collection pipe 2. The filter unit 7 and the adsorption unit 8 filter and adsorb the waste gas inside the main body and discharge the treated waste gas through the exhaust port 4, thus completing the waste gas treatment work.

[0030] In summary, the VOCs waste gas treatment equipment of this utility model, compared with VOCs treatment equipment, can monitor waste gas emissions in real time and automatically adjust the working mode according to changes in VOCs concentration, so as to realize the immediate start-up and efficient operation of the equipment and avoid ineffective treatment and energy waste.

[0031] Specifically, the filter unit 7 includes a primary filter material 701 and a secondary filter material 702 horizontally spaced inside the main body 1. Both the primary and secondary filter materials 701 and 702 include a first metal frame within the main body 1. Each first metal frame houses a movably mounted filter plate, and the cross-section of each filter plate is identical to the cross-section inside the main body 1. The other end of the gas collection pipe 6 communicates with the area between the primary filter material 701 and the main body 1. Specifically, the filter plates are made of metal wire mesh or porous fabric. The pore sizes of the filter plates in the primary and secondary filter materials 701 are different. The pores of the primary filter material 701 are relatively large, enabling the filtration of coarse particles; conversely, the pores of the secondary filter material 702 are relatively small, enabling the filtration of fine particles.

[0032] Preferably, but not limited to, the adsorption unit 8 includes a second metal frame disposed inside the main body 1, and an adsorption material is movably disposed within the second metal frame. Specifically, the adsorption material is made of activated carbon or zeolite. The cross-section of the adsorption material is the same as the cross-section inside the main body 1.

[0033] Preferably, both the first and second metal frames have a notch penetrating the top of the main body 1, and the filter plate and adsorption material are respectively disposed within the first and second metal frames through the notches. When replacing the filter unit 7 and adsorption unit 8, they can be replaced by removing the first and second metal frames from the main body 1. Simultaneously, the replaced filter unit 7 and adsorption unit 8 are transferred and disposed of as hazardous waste. The adsorption unit 8 can be regenerated through desorption and catalytic combustion for continued use.

[0034] Furthermore, the bottom of the main body 1 is equipped with universal casters 11, which allow for the movement of the VOCs waste gas treatment equipment, improving its operational flexibility. The gas collection hood 5 has a circular, elliptical, or rectangular opening and is made of stainless steel. When using the gas collection hood 5, the appropriate opening type can be selected according to the waste gas emission point. The opening area of ​​the gas collection hood 5 should be slightly larger than the production operation surface. The gas collection hood 5 is connected to the gas collection pipe 6 via a quick connector for easy assembly and disassembly.

[0035] Furthermore, the control module includes a controller, a control panel 12, and a main switch 13, all electrically connected to each other and mounted on the main body 1; pressure sensors are installed on the front and rear sides of the primary filter material 701 and the secondary filter material 702; a timer is installed inside the adsorption unit 8; the gas concentration sensor, pressure sensor, and timer are all electrically connected to the controller; the control panel 12 has a display area and indicator lights; the display area includes a gas concentration display area 14 before gas purification, a gas concentration display area 15 after gas purification, a primary pressure difference display area 16, and a secondary pressure difference display area 17; the indicator lights include a start indicator light 18 electrically connected to the controller, an adsorption unit replacement indicator light 19, a primary filter material replacement indicator light 20, and a secondary filter material replacement indicator light 21.

[0036] The main switch 13 is used to start the entire VOCs exhaust gas treatment equipment, and the start indicator light 18 indicates the on / off status of the main switch 13. The dual-channel PID detection module 3 monitors the exhaust gas concentration at the exhaust point and can display it in real time through the pre-purification concentration display area 14. The dual-channel PID detection module 3 is also used to monitor the gas concentration at the exhaust port 4 and can display it in real time through the post-purification concentration display area 15. The pressure sensor monitors the pressure difference between the front and rear sides of the primary filter material 701 and the secondary filter material 702. The pressure difference is displayed through the primary pressure difference display area 16 and the secondary pressure difference display area 17. The pressure difference can be used to determine whether the primary filter material 701 and the secondary filter material 702 need to be replaced. When the primary filter material 701 and the secondary filter material 702 reach the end of their service life, the primary filter material replacement indicator light 20 and the secondary filter material replacement indicator light 21 will remind the user to replace them. The timer is used to time the service life of the adsorption unit 8. When the service life is reached, the adsorption unit replacement indicator light 19 will remind the user to replace it. The usage status of the filter unit 7 and the adsorption unit 8 can be monitored online without manual monitoring, which facilitates timely replacement of the filter unit 7 and the adsorption unit 8.

[0037] The method of using the VOCs waste gas treatment equipment in this utility model includes: Step 1, moving the main body 1 to the vicinity of the waste gas emission point with small gas volume and intermittent emission, and adjusting the universal telescopic gas collection pipe 2 so that the gas collection hood 5 at its end is aligned with the waste gas emission point.

[0038] Step 2: The dual-channel PID detection module 3 collects and monitors the VOCs concentration value of the gas in the air in real time, and transmits the monitored VOCs concentration value to the control module.

[0039] Step 3: The control module acquires the VOCs concentration value of the gas in the air in real time. When the VOCs concentration value of the gas in the air is greater than the preset value, it is determined that there is exhaust gas in the environment. The control module starts the exhaust fan 10 and proceeds to step 4. Otherwise, the exhaust fan 10 does not work.

[0040] Step 4: The exhaust fan 10 generates negative pressure, which draws the exhaust gas into the main body 1 through the gas collection hood 5 and the universal telescopic gas collection pipe 2. The filter unit 7 and the adsorption unit 8 filter and adsorb the exhaust gas inside the main body 1, and discharge the treated exhaust gas through the exhaust port 4 to complete the exhaust gas treatment work.

[0041] Step 5: The dual-channel PID detection module 3 monitors the VOCs concentration of the exhaust gas in real time through the second gas collection pipe 91. When the VOCs concentration of the exhaust gas exceeds the preset value, the control module issues a warning for the replacement of the adsorption unit 8 and lights up the adsorption unit replacement indicator light 19.

[0042] In practical applications, such as in the painting operations of auto repair shops, once the VOCs concentration is detected to rise to a preset threshold, the equipment immediately starts, and the exhaust fan 10 efficiently collects the exhaust gas. After the operation is completed, the equipment automatically enters standby mode, waiting for the next start command. The entire process requires no manual intervention, which improves processing efficiency and reduces operational difficulty and energy consumption.

[0043] In summary, the VOCs waste gas treatment equipment of this utility model is designed for use scenarios involving short-term and intermittent VOCs emissions. Through miniaturization, intelligentization, and modular design, it effectively solves the limitations of existing VOCs treatment equipment in specific application scenarios, achieving efficient resource utilization and environmentally friendly protection, and has significant social and economic benefits.

Claims

1. A VOCs waste gas treatment device, characterized in that, It includes a main body and a control module. A universal telescopic air collection pipe and a dual-channel PID detection module are provided on the outer wall of one side of the main body, and an exhaust port is provided on the outer wall of the other side of the main body. One end of the universal telescopic gas collection pipe is equipped with a gas collection hood, and the other end is connected to the interior of the main body; a first gas collection pipe is installed inside the universal telescopic gas collection pipe; The main body contains a filter unit and an adsorption unit arranged sequentially from left to right. The other end of the universal telescopic gas collection pipe is connected to the area between the filter unit and the main body. A gas exhaust pipe is arranged in the area between the adsorption unit and the main body. An exhaust fan is installed on the gas exhaust pipe, and the end of the gas exhaust pipe is connected to the exhaust port. A second gas collection pipe is arranged inside the gas exhaust pipe. The first gas collection pipe and the second gas exhaust pipe are respectively connected to the dual-channel PID detection module. Both the dual-channel PID detection module and the exhaust fan are electrically connected to the control module.

2. The VOCs waste gas treatment equipment according to claim 1, characterized in that, The filtration unit includes a primary filter material and a secondary filter material horizontally spaced inside the main body. Both the primary and secondary filter materials include a first metal frame disposed within the main body. A filter plate is movably disposed within each first metal frame, and the cross-section of each filter plate is the same as the cross-section inside the main body. The other end of the gas collection pipe is connected to the area between the primary filter material and the main body.

3. The VOCs waste gas treatment equipment according to claim 2, characterized in that, The adsorption unit includes a second metal frame disposed inside the main body, and an adsorption material is movably disposed within the second metal frame. The cross-section of the adsorption material is the same as the cross-section inside the main body.

4. The VOCs waste gas treatment equipment according to claim 3, characterized in that, The top of both the first metal frame and the second metal frame is provided with a notch that penetrates the top of the main body, and the filter plate and the adsorbent material are respectively disposed in the first metal frame and the second metal frame through the notch.

5. The VOCs waste gas treatment equipment according to claim 2, characterized in that, A filter device is installed on the first gas collection pipe; the filter plate is made of metal wire mesh or porous fabric.

6. The VOCs waste gas treatment equipment according to claim 3, characterized in that, The adsorbent material is made of activated carbon or zeolite.

7. The VOCs waste gas treatment equipment according to claim 1, characterized in that, The bottom of the main body is equipped with universal pulleys; the opening of the gas collection hood is circular, elliptical or rectangular.

8. The VOCs waste gas treatment equipment according to claim 1, characterized in that, The wind speed at the cross-section of the gas collection hood opening is 0.4 m / s to 0.5 m / s.

9. The VOCs waste gas treatment equipment according to claim 2, characterized in that, The control module includes a controller, a control panel, and a main switch that are electrically connected to each other and mounted on the main body; Pressure sensors are installed on the front and rear sides of both the primary and secondary filter materials; a timer is installed inside the adsorption unit; the gas concentration sensor, pressure sensor, and timer are all electrically connected to the controller. The control panel is equipped with a display area and indicator lights; the display area includes a gas concentration display area before purification, a gas concentration display area after purification, a primary pressure difference display area, and a secondary pressure difference display area; the indicator lights include a start indicator light, an adsorption unit replacement indicator light, a primary filter material replacement indicator light, and a secondary filter material replacement indicator light, all electrically connected to the controller.

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