Device for photocatalytic degradation of volatile organic compounds

Abstract

The utility model discloses a device for photocatalytic degradation of volatile organic compounds, relates to the technical field of organic waste gas treatment, and aims to solve the technical problems of quick overload failure of the middle part of a filter material and low edge utilization rate caused by non-uniform airflow distribution of an existing photocatalytic device. A cavity A is formed in the shell, a support is arranged in the middle of the interior of the cavity A, a processing mechanism is arranged above the support, a guiding mechanism is arranged below the support, a driving mechanism is connected to the guiding mechanism, a cavity B is formed in the lower end of the interior of the shell, and a cooling mechanism is arranged in the cavity B. Through the linkage design of the guide plate A and the guide plate B, the guide plate A dynamically disperses gas to the middle and two sides of the filter screen through the reciprocating swing of the shaft rod, and the gas is promoted to cover the front and rear areas of the filter screen in cooperation with the multidirectional flow guide of the guide plate B, so that the gas tends to uniformly pass through each filter layer, and the material utilization rate is improved.

Description

Technical Field

[0001] This utility model relates to the field of organic waste gas treatment technology, and more specifically, to a device for photocatalytic degradation of volatile organic compounds. Background Technology

[0002] Volatile organic compounds (VOCs) are a class of carbonaceous compounds that readily evaporate into the atmosphere at room temperature, originating widely from industrial production, paint spraying, and furniture release. Their composition is complex, and some substances are toxic or carcinogenic, posing a potential threat to the ecological environment and human health. Current technologies for controlling VOCs mainly include adsorption, combustion, and photocatalytic oxidation. Among these, photocatalysis has attracted attention due to its mild reaction conditions and lack of secondary pollution.

[0003] Existing photocatalytic devices mostly employ a straight-through gas flow path, where gas enters from the inlet and passes directly through the filter and photocatalytic layers in a fixed direction. This design tends to cause the gas flow to concentrate in the central region of the filter medium, while the peripheral regions, due to lower flow velocities, are unable to fully participate in the reaction. Under long-term operation, the central filter material fails rapidly due to overload, requiring frequent replacement, while the peripheral material is underutilized, resulting in resource waste. Therefore, we propose a device for the photocatalytic degradation of volatile organic compounds. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a device for photocatalytic degradation of volatile organic compounds, so as to solve the technical problems of uneven airflow distribution in existing photocatalytic devices, which leads to rapid failure of the filter material in the middle due to overload and low utilization rate at the edges.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a device for photocatalytic degradation of volatile organic compounds, comprising a shell, a cavity A arranged at the upper end of the shell, a support arranged in the middle of the cavity A, a processing mechanism arranged above the support, a guiding mechanism arranged below the support, a driving mechanism connected to the guiding mechanism, a cavity B arranged at the lower end of the shell, and a cooling mechanism arranged in the cavity B;

[0006] The guiding mechanism includes a frame, within which multiple guide plates A are arranged. The multiple guide plates A are arranged sequentially from left to right within the frame at intervals. Each guide plate A is accompanied by a guide plate B on both sides, and the guide plates B are in an arc-shaped structure.

[0007] Preferably, an exhaust channel is arranged at the upper end of the cavity A, and a fan is arranged in the exhaust channel. An air intake channel is arranged at the lower end of the cavity A, and a notch is arranged at one end of the air intake channel. A gradually expanding guide cavity is arranged at the other end of the air intake channel.

[0008] Preferably, the processing mechanism includes an activated carbon filter, a HEPA filter is arranged on the activated carbon filter, a photocatalytic degradation mesh is arranged on the HEPA filter, an ultraviolet lamp is arranged on the photocatalytic degradation mesh, and the ultraviolet lamp is fixed inside one side of the cavity A.

[0009] Preferably, the drive mechanism includes a crossbar with a rotating rod arranged in the middle. One end of the rotating rod has a crank, and the other end of the rotating rod is connected to the impeller via a transmission assembly. The impeller is rotatably mounted in the notch.

[0010] Preferably, the cooling mechanism includes a pump body and a water tank. The input end of the pump body is connected to the water tank through a water pipe A, and the output end of the pump body is connected to an atomizing nozzle through a water pipe B. The atomizing nozzle is fixed inside the cavity A on the other side.

[0011] Preferably, one end of the guide plate A is connected to a connecting rod, and one end of the connecting rod is connected to a movable sleeve, the movable sleeve containing a crank.

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

[0013] 1. This utility model designs guide plate A and guide plate B. Guide plate A is movably connected to the frame via a shaft and can reciprocate. After the gas enters the shell through the air inlet channel and the gradually expanding guide cavity, it is dynamically dispersed by the swinging guide plate A to the middle and side areas of the activated carbon filter. At the same time, the arc-shaped guide plate B installed on both sides of guide plate A can guide the airflow in multiple directions, so that the gas covers the front and rear parts and the middle area of ​​the activated carbon filter. In this way, the gas can pass through the activated carbon filter, HEPA filter and photocatalytic degradation screen in a more uniform manner, and complete the adsorption filtration and catalytic degradation treatment in sequence, which helps to improve the overall utilization rate of the filter material.

[0014] 2. This utility model achieves dynamic control of the guide plate A by designing a crank, movable sleeve, connecting rod, and rotating rod structure. Specifically, the impeller transmits rotational power to the rotating rod via a transmission assembly. The rotating rod then drives the movable sleeve to rotate periodically through an eccentric crank structure. The movable sleeve is hinged to the end of the connecting rod. When the crank rotates with the rotating rod, the reciprocating oscillation of the movable sleeve synchronously drives the connecting rod to oscillate in the opposite direction. This linkage mechanism can convert the airflow kinetic energy of the impeller into the regular deflection of the guide plate A. Multi-directional adjustment of the airflow direction is achieved through mechanical transmission. Compared with the traditional electric drive scheme, this structure uses the airflow's own energy to complete the motion transmission, which reduces the dependence on external power components, lowers system energy consumption and operating noise, and improves the stability of the action through multi-stage linkage design.

[0015] 3. This utility model designs an impeller and transmission assembly structure. The transmission assembly consists of pulley A, a transmission belt, and pulley B. Pulley A is fixed to the end of the impeller, and pulley B is fixed to the end of the rotating rod. The two are linked by the transmission belt. When the airflow in the intake channel drives the impeller to rotate, the power generated can be transmitted to the rotating rod through the transmission assembly. Then, the negative pressure effect of the fan is used to draw external gas into the casing. This structure does not rely on an external power unit and achieves the rotation of the guide plate A through airflow self-drive, which helps to reduce equipment energy consumption and maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main appearance structure of this utility model;

[0017] Figure 2 This is a top view of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention from the bottom view;

[0019] Figure 4 This is a schematic diagram of the guiding mechanism structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the guide plate A structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the drive mechanism structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the cooling mechanism of this utility model;

[0023] Figure 8 This is a schematic diagram of the processing mechanism of this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Shell; 2. Cavity A; 3. Support; 4. Processing mechanism; 401. Activated carbon filter; 402. HEPA filter; 403. Photocatalytic degradation mesh; 404. Ultraviolet lamp; 5. Guiding mechanism; 501. Frame; 502. Guide plate A; 503. Guide plate B; 504. Linkage rod; 505. Movable sleeve; 6. Drive mechanism; 601. Crossbar; 602. Rotating rod; 603. Crank; 604. Transmission assembly; 605. Impeller; 7. Cavity B; 8. Cooling mechanism; 801. Pump body; 802. Water tank; 803. Water pipe A; 804. Water pipe B; 805. Atomizing nozzle; 9. Exhaust channel; 10. Fan; 11. Inlet channel; 12. Notch; 13. Gradually expanding guide cavity. Detailed Implementation

[0026] like Figures 1 to 8 As shown, the present invention relates to a device for photocatalytic degradation of volatile organic compounds, comprising a housing 1, a cavity A2 arranged at the upper end of the housing 1, a support 3 arranged in the middle of the cavity A2, a processing mechanism 4 arranged above the support 3, a guiding mechanism 5 arranged below the support 3, a driving mechanism 6 connected to the guiding mechanism 5, a cavity B7 arranged at the lower end of the housing 1, and a cooling mechanism 8 arranged inside the cavity B7.

[0027] The guiding mechanism 5 includes a frame 501, in which multiple guide plates A502 are arranged. The multiple guide plates A502 are arranged alternately from left to right in the frame 501. Each guide plate A502 is accompanied by a guide plate B503 on both sides. The guide plate B503 has an arc-shaped structure. This invention utilizes the design of guide plates A502 and B503. Guide plate A502 is movably connected to frame 501 via a shaft and reciprocates. After the gas enters the housing 1 through the air inlet channel 11 and the gradually expanding guide cavity 13, it is dynamically dispersed by the oscillating guide plate A502 to the middle and side areas of the activated carbon filter 401. At the same time, the arc-shaped guide plates B503 installed on both sides of guide plate A502 can guide the airflow in multiple directions, causing the gas to cover the front, back and middle areas of the activated carbon filter 401. In this way, the gas can pass through the activated carbon filter 401, HEPA filter 402 and photocatalytic degradation screen 403 in a more uniform manner, completing the adsorption filtration and catalytic degradation treatment in sequence, which helps to improve the overall utilization rate of the filter material.

[0028] In an embodiment of this utility model, an exhaust channel 9 is arranged at the upper end of the cavity A2, and a fan 10 is arranged inside the exhaust channel 9. An air intake channel 11 is arranged at the lower end of the cavity A2. A notch 12 is arranged at one end of the air intake channel 11, and a gradually expanding guide cavity 13 is arranged at the other end of the air intake channel 11. This invention, through the structure of the air intake channel 11, the exhaust channel 9, and the fan 10, allows external gases containing volatile organic compounds to enter the outer casing, then pass sequentially through the activated carbon filter 401, the HEPA filter 402, and the photocatalytic degradation mesh 403, and are discharged through the exhaust channel 9. The fan 10 generates active negative pressure suction to form a ventilation channel inside the casing 1, achieving efficient gas treatment. The gradually expanding guide cavity 13 ensures that the gas is evenly dispersed when it enters the cavity A2 through the air intake channel 11, facilitating the even guidance and transmission of the gas to the activated carbon filter 401, the HEPA filter 402, and the photocatalytic degradation mesh 403 in conjunction with the guide plates A502 and B503.

[0029] In an embodiment of this utility model, the processing mechanism 4 includes an activated carbon filter 401, a HEPA filter 402 arranged on the activated carbon filter 401, a photocatalytic degradation mesh 403 arranged on the HEPA filter 402, and an ultraviolet lamp 404 arranged on the photocatalytic degradation mesh 403. The ultraviolet lamp 404 is fixed inside one side of the cavity A2. This invention utilizes a structure consisting of an activated carbon filter 401, a HEPA filter 402, and a photocatalytic degradation mesh 403. The activated carbon filter 401 initially adsorbs large particles and odors in the gas, while the HEPA filter 402 further intercepts fine particles. The photocatalytic degradation mesh 403, under the irradiation of an ultraviolet lamp 404, triggers a catalytic reaction to decompose volatile organic compounds. The sequential processing of each layer of media helps improve gas purification efficiency. The installation of the ultraviolet lamp 404 optimizes the light distribution and promotes the stable operation of the photocatalytic degradation mesh 403. This structure reduces the risk of local overload of the filter and minimizes the overall performance degradation caused by failure in a single area, thereby extending the service life of the filter material and balancing treatment effectiveness with economy.

[0030] In an embodiment of this utility model, the drive mechanism 6 includes a crossbar 601, a rotating rod 602 arranged in the middle of the crossbar 601, a crank 603 arranged at one end of the rotating rod 602, and the other end of the rotating rod 602 being poweredly connected to the impeller 605 through a transmission assembly 604. The impeller 605 is rotatably mounted in the notch 12. This utility model designs the structure of the impeller 605 and the transmission assembly 604. The transmission assembly 604 consists of a pulley A, a transmission belt, and a pulley B. The pulley A is fixed to the end of the impeller 605, and the pulley B is fixed to the end of the rotating rod 602. The two are linked by the transmission belt. When the airflow in the intake channel 11 drives the impeller 605 to rotate, the power generated can be transmitted to the rotating rod 602 through the transmission assembly 604. Then, the negative pressure effect of the fan 10 is used to draw external gas into the housing 1. This structure does not rely on an external power device and achieves the rotation of the guide plate A502 through airflow self-drive, which helps to reduce equipment energy consumption and maintenance costs.

[0031] In an embodiment of this utility model, the cooling mechanism 8 includes a pump body 801 and a water tank 802. The input end of the pump body 801 is connected to the water tank 802 via a water pipe A803, and the output end of the pump body 801 is connected to an atomizing nozzle 805 via a water pipe B804. The atomizing nozzle 805 is fixed inside the cavity A2 on the other side. The water tank 802 of this utility model allows water to be temporarily stored inside for cleaning and cooling, providing a storage location. Through the structure of water pipe A803, pump body 801, and water pipe B804, water in the water tank 802 can be actively pumped to the atomizing nozzle 805, achieving an active pumping effect. The installation of the atomizing nozzle 805 allows the water delivered to the tank via water pipe B804 to be atomized. After atomization, it is convenient to cool the area irradiated by the ultraviolet lamp 404 and to clean the photocatalytic degradation mesh 403 over a wide area.

[0032] In an embodiment of this utility model, a connecting rod 504 is connected to one end of the guide plate A502, and a movable sleeve 505 is connected to one end of the connecting rod 504. A crank 603 is provided inside the movable sleeve 505. This invention achieves dynamic control of the guide plate A502 through the design of a crank 603, a movable sleeve 505, a connecting rod 504, and a rotating rod 602. Specifically, the impeller 605 transmits rotational power to the rotating rod 602 via the transmission assembly 604. The rotating rod 602 then drives the movable sleeve 505 to rotate periodically via the eccentric crank 603. The movable sleeve 505 is hinged to the end of the connecting rod 504. When the crank 603 rotates with the rotating rod 602, the reciprocating oscillation of the movable sleeve 505 synchronously drives the connecting rod 504 to oscillate in the opposite direction. This linkage mechanism can convert the kinetic energy of the impeller 605 into the regular deflection of the guide plate A502, achieving multi-directional adjustment of the airflow direction through mechanical transmission. Compared with traditional electric drive schemes, this structure utilizes the energy of the airflow itself to complete motion transmission, reducing reliance on external power components, lowering system energy consumption and operating noise, and improving operational stability through multi-stage linkage design.

[0033] Working Principle: This embodiment provides a device for photocatalytic degradation of volatile organic compounds. During use, the operator needs to first connect an external power supply to the device and control its operation via the control panel. The operator turns on the fan 10, which begins to rotate and generate negative pressure suction. This negative pressure suction draws the gas containing volatile organic compounds from outside the housing 1 into the housing 1 through the air intake channel 11. When the gas enters the air intake channel 11, it pushes the impeller 605. The impeller 605, after being pushed, drives the rotating rod 602 to rotate via the transmission assembly 604. The rotating rod 602, after rotating, drives the crank 603 mounted at one end... As the crank 603 rotates, it causes the movable sleeve 505 to swing back and forth. The movable sleeve 505, in turn, swings the guide plate A502, which is rotatably mounted inside the frame 501, via the connecting rod 504. The guide plate A502, swinging back and forth within the frame 501, guides the gas entering the cavity A2 through the intake channel 11 to both sides of the activated carbon filter 401. The guide plates B503, mounted on both sides of the guide plate A502, then guide the gas to the front and rear ends of the activated carbon filter 401. The gas then passes evenly through the activated carbon filter 401, the HEPA filter 402, and the photocatalytic degradation... Inside the filter 403, activated carbon filter 401 and HEPA filter 402 perform preliminary filtration of dust and other impurities in the gas. Meanwhile, the photocatalytic degradation filter 403 uses a nano-titanium dioxide coating and ultraviolet light from the UV lamp 404 to generate a strong oxidation reaction, completely mineralizing volatile organic compounds into harmless substances. The gas treated by the treatment unit 4 is ultimately discharged outside the housing 1 by the fan 10 through the exhaust channel 9. A TVOC concentration sensor installed outside the housing 1 continuously detects the concentration of organic compounds in the nearby gas and transmits this data to the display screen on the control panel for personnel to view. The staff learned that the ultraviolet lamp 404 generates heat during operation, which is detected by a heat sensor installed on the inner side of the cavity A2. When the temperature sensed by the heat sensor reaches the previously set threshold, the heat sensor transmits the electrical signal to the control panel. The control panel then controls the pump 801 to operate. The pump 801 draws water from the water tank 802 into the cavity through the water pipe A803, and delivers it to the atomizing nozzle 805 through the water pipe B804. The atomizing nozzle 805 atomizes the water and sprays it onto the photocatalytic degradation net 403 to clean the photocatalytic degradation net 403 and cool the space.

[0034] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An apparatus for photocatalytic degradation of volatile organic compounds, comprising a housing (1), characterized in that: The upper part of the shell (1) is provided with a cavity A (2), the middle of the cavity A (2) is provided with a support (3), the upper part of the support (3) is provided with a processing mechanism (4), the lower part of the support (3) is provided with a guide mechanism (5), the guide mechanism (5) is connected with a drive mechanism (6), the lower part of the shell (1) is provided with a cavity B (7), and the cavity B (7) is provided with a cooling mechanism (8). The guiding mechanism (5) includes a frame (501), and a plurality of guide plates A (502) are arranged inside the frame (501). The plurality of guide plates A (502) are arranged in the frame (501) from left to right at intervals. Each time, a guide plate B (503) is arranged on both sides of the guide plate A (502). The guide plate B (503) has an arc-shaped structure.

2. The apparatus for photocatalytic degradation of volatile organic compounds according to claim 1, characterized in that: An exhaust channel (9) is arranged at the upper end of the cavity A (2), and a fan (10) is arranged inside the exhaust channel (9). An air intake channel (11) is arranged at the lower end of the cavity A (2). A notch (12) is arranged at one end of the air intake channel (11), and a gradually expanding guide cavity (13) is arranged at the other end of the air intake channel (11).

3. The apparatus for photocatalytic degradation of volatile organic compounds according to claim 2, characterized in that: The processing mechanism (4) includes an activated carbon filter (401), on which a HEPA filter (402) is arranged, on which a photocatalytic degradation mesh (403) is arranged, on which an ultraviolet lamp (404) is arranged, and the ultraviolet lamp (404) is fixed inside one side of the cavity A (2).

4. The apparatus for photocatalytic degradation of volatile organic compounds according to claim 3, characterized in that: The drive mechanism (6) includes a crossbar (601), a rotating rod (602) is arranged in the middle of the crossbar (601), a crank (603) is arranged at one end of the rotating rod (602), and the other end of the rotating rod (602) is poweredly connected to the impeller (605) through a transmission group (604), and the impeller (605) is rotatably installed in the notch (12).

5. The apparatus for photocatalytic degradation of volatile organic compounds according to claim 4, characterized in that: The cooling mechanism (8) includes a pump body (801) and a water tank (802). The input end of the pump body (801) is connected to the water tank (802) through a water pipe A (803). The output end of the pump body (801) is connected to an atomizing nozzle (805) through a water pipe B (804). The atomizing nozzle (805) is fixed on the other side inside the cavity A (2).

6. The apparatus for photocatalytic degradation of volatile organic compounds according to claim 5, characterized in that: One end of the guide plate A (502) is connected to a connecting rod (504), and the other end of the connecting rod (504) is connected to a movable sleeve (505). A crank (603) is provided inside the movable sleeve (505).

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