An air purification device for a paint spraying workshop

Abstract

This utility model discloses an air purification device for a paint spraying workshop, including a trolley with a purification box fixedly connected to its top. The purification box has an air vent inside, and inside the air vent, from the air inlet to the air outlet, are sequentially arranged an induced draft fan, a flow equalization plate, a high-voltage electrostatic purification mechanism, an activated carbon adsorption and catalytic purification mechanism, a photocatalytic purification mechanism, and a negative ion generating mechanism. This utility model uses the induced draft fan to power the polluted air, causing it to pass sequentially through the high-voltage electrostatic purification mechanism, the activated carbon adsorption and catalytic purification mechanism, the photocatalytic purification mechanism, and the negative ion generating mechanism, thus forming a complete purification chain of "particulate matter removal → organic waste gas decomposition → air optimization." This efficiently treats common pollutants in paint spraying workshops such as dust, VOCs, and odors. By utilizing the complementary functions of each mechanism, it solves the problem that a single purification method cannot comprehensively handle complex pollution.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology in paint spraying workshops, specifically to an air purification device for paint spraying workshops. Background Technology

[0002] During the production process in a paint spraying workshop, a large number of pollutants are generated, including dust, volatile organic compounds (VOCs), and various odors, which seriously affect the air quality in the workshop.

[0003] Currently, existing air purification devices on the market have many limitations in treating polluted air in paint spraying workshops. Some devices only use a single purification method, such as relying solely on activated carbon adsorption to treat organic waste gas, but their removal effect on particulate matter such as dust in the air is poor, making it difficult to achieve comprehensive purification of complex pollutants. Other devices attempt to combine multiple purification methods, but the lack of reasonable synergistic design between the various purification mechanisms results in low purification efficiency, failing to meet the workshop's air quality requirements.

[0004] Furthermore, many existing purification devices have fixed structures, making them inflexible and unable to be moved flexibly to different contaminated areas within the workshop, resulting in poor adaptability. At the same time, the core components of some devices are difficult to disassemble and maintain, leading to increased operating costs and affecting the long-term stable operation of the equipment. Moreover, during the purification process, these devices struggle to effectively monitor and provide feedback on the quality of the purified air, failing to ensure that the emitted air meets compliance standards and posing a potential threat to the health of workshop workers.

[0005] Therefore, it is necessary to study an air purification device for paint spraying workshops. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide an air purification device for paint spraying workshops, which has the advantage of high-efficiency air purification and solves the problem that a single purification method is insufficient to comprehensively handle complex pollution.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an air purification device for a paint spraying workshop, including a trolley, a purification box fixedly connected to the top of the trolley, an air vent inside the purification box, and an exhaust fan, a flow equalization plate, a high-voltage electrostatic purification mechanism, an activated carbon adsorption and catalytic purification mechanism, a photocatalytic purification mechanism, and a negative ion generating mechanism arranged sequentially from the air inlet to the air outlet inside the air vent.

[0008] The high-voltage electrostatic purification mechanism includes a high-voltage ionization frame. Several positive plates and negative wires are fixedly connected to the inner wall of the high-voltage ionization frame. The positive plates and negative wires are alternately distributed along the airflow direction. One end of each of the negative wires is fixedly connected to the same wire frame, and the wire frame is fixedly connected to the high-voltage ionization frame. The positive plates and the wire frame are electrically connected to the positive and negative terminals of a high-voltage DC power supply, respectively.

[0009] The activated carbon adsorption and catalytic purification mechanism includes a detachable activated carbon plate, the activated carbon plate having a connecting cavity inside, and a catalytic oxidation mesh being installed inside the connecting cavity;

[0010] The photocatalytic purification mechanism includes a connecting frame, and a plurality of ultraviolet lamps and photocatalytic coating plates are fixedly connected to the inner wall of the connecting frame, and the plurality of ultraviolet lamps and photocatalytic coating plates are alternately arranged along the airflow direction.

[0011] The negative ion generating mechanism includes a negative ion generator, which is installed inside the purification box, and the output end of the negative ion generator is electrically connected to an ion release needle assembly.

[0012] As a preferred embodiment of this utility model, a replacement slot is provided on one side of the purification box, and the replacement slot is located in front of the induced draft fan. A detachable primary filter screen is slidably connected inside the replacement slot.

[0013] As a preferred embodiment of this utility model, a collection trough is provided between the high-voltage electrostatic purification mechanism and the activated carbon adsorption and catalytic purification mechanism. A detachable low-pressure dust collection frame is slidably connected inside the collection trough, and multiple vertically evenly arranged low-pressure collection plates are fixedly connected inside the low-pressure dust collection frame.

[0014] As a preferred embodiment of this invention, a gas detector is provided on the outside of the negative ion generating mechanism.

[0015] As a preferred embodiment of this invention, the front of the purification box is provided with a controller, and the front of the controller is provided with a human-machine interface.

[0016] As a preferred embodiment of this invention, both the air inlet and outlet of the vent are fixedly connected with protective grilles.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model uses an induced draft fan to power polluted air, which sequentially passes through a high-voltage electrostatic purification mechanism (a high-voltage ionization frame, a positive electrode plate, and a negative electrode line adsorb charged particles through positive and negative electrodes), an activated carbon adsorption and catalytic purification mechanism (an activated carbon plate adsorbs organic waste gas, and a catalytic oxidation mesh further decomposes harmful components), a photocatalytic purification mechanism (ultraviolet lamps excite the titanium dioxide coating on the surface of the photocatalytic coating plate to oxidize and decompose residual organic matter), and a negative ion generation mechanism (a negative ion generator releases negative ions through an ion release needle assembly to improve air quality). This forms a complete purification chain of "particulate matter removal → organic waste gas decomposition → air optimization," efficiently treating common pollutants such as dust, VOCs, and odors in spray painting workshops. By utilizing the complementary functions of each mechanism, it solves the problem that a single purification method cannot comprehensively handle complex pollution.

[0019] 2. This utility model uses a pre-filter located in front of the exhaust fan to pre-filter large particles of dust, hair, fibers and other impurities in the air, preventing them from entering subsequent purification mechanisms (such as high-voltage ionization frames and activated carbon plates) and causing blockage or affecting purification efficiency, thus extending the service life of core components and reducing maintenance frequency. In addition, the pre-filter can be easily and quickly replaced through a sliding connection of the replacement slot, making operation convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a rear-view perspective view of the structure of this utility model;

[0022] Figure 3 This is a partial cross-sectional perspective view of the structure of this utility model;

[0023] Figure 4 This is an exploded view of the structure of this utility model.

[0024] In the diagram: 1. Trolley; 2. Purification box; 3. Vent; 4. Exhaust fan; 5. High-voltage ionization frame; 6. Positive electrode plate; 7. Negative electrode wire; 8. Activated carbon plate; 9. Catalytic oxidation mesh; 10. Connecting frame; 11. Ultraviolet lamp tube; 12. Photocatalytic coating plate; 13. Negative ion generator; 14. Ion release needle assembly; 15. Primary filter; 16. Low-pressure dust collection frame; 17. Low-pressure collection plate; 18. Controller; 19. Protective grille. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 4 As shown, the present invention provides an air purification device for a paint spraying workshop, including a trolley 1, a purification box 2 fixedly connected to the top of the trolley 1, an air vent 3 inside the purification box 2, and an exhaust fan 4, a flow equalization plate, a high-voltage electrostatic purification mechanism, an activated carbon adsorption and catalytic purification mechanism, a photocatalytic purification mechanism and a negative ion generating mechanism arranged sequentially from the air inlet to the air outlet inside the air vent 3.

[0027] The high-voltage electrostatic purification mechanism includes a high-voltage ionization frame 5. Several positive electrode plates 6 and negative electrode lines 7 are fixedly connected to the inner wall of the high-voltage ionization frame 5. The several positive electrode plates 6 and negative electrode lines 7 are alternately distributed along the airflow direction. One end of the several negative electrode lines 7 is fixedly connected to the same wire frame, and the wire frame is fixedly connected to the high-voltage ionization frame 5. The positive electrode plates 6 and the wire frame are electrically connected to the positive and negative terminals of the high-voltage DC power supply, respectively.

[0028] The activated carbon adsorption and catalytic purification mechanism includes a detachable activated carbon plate 8, with a connecting cavity inside the activated carbon plate 8. A catalytic oxidation mesh 9 is installed inside the connecting cavity, and the catalytic oxidation mesh 9 is made by coating a metal mesh with a precious metal catalyst.

[0029] The photocatalytic purification mechanism includes a connecting frame 10. Several ultraviolet lamps 11 and photocatalytic coating plates 12 are fixedly connected to the inner wall of the connecting frame 10. The several ultraviolet lamps 11 and photocatalytic coating plates 12 are arranged alternately along the airflow direction. The surface of the photocatalytic coating plate 12 is coated with a titanium dioxide photocatalytic coating.

[0030] The negative ion generating mechanism includes a negative ion generator 13, which is installed inside the purification box 2. The output end of the negative ion generator 13 is electrically connected to an ion release needle assembly 14.

[0031] refer to Figure 3 and Figure 4 The purification box 2 has a replacement slot on one side, and the replacement slot is located in front of the exhaust fan 4. A removable primary filter 15 is slidably connected inside the replacement slot.

[0032] As a technical optimization of this utility model, the primary filter 15 is located in front of the exhaust fan 4, which can pre-filter large particles of dust, hair, fibers and other impurities in the air, preventing them from entering the subsequent purification mechanism such as the high-voltage ionization frame 5 and the activated carbon plate 8, causing blockage or affecting the purification efficiency, extending the service life of the core components, and reducing the maintenance frequency. In addition, the primary filter 15 can be easily and quickly replaced through the sliding connection of the replacement slot, making the operation convenient.

[0033] refer to Figure 3 and Figure 4 A collection tank is provided between the high-voltage electrostatic purification mechanism and the activated carbon adsorption and catalytic purification mechanism. A detachable low-pressure dust collection frame 16 is slidably connected inside the collection tank. Multiple vertically evenly arranged low-pressure collection plates 17 are fixedly connected inside the low-pressure dust collection frame 16.

[0034] As a technical optimization of this utility model, a low-pressure dust collection frame 16 is set after the high-voltage electrostatic purification mechanism. The internal low-pressure collection plate 17 further adsorbs the fine charged particles that are not completely captured, thereby improving dust removal efficiency and reducing particulate matter emissions. In addition, the low-pressure dust collection frame 16 is detachable, which facilitates regular cleaning of the collected dust, avoids secondary pollution, and simplifies the maintenance process.

[0035] refer to Figure 1 and Figure 3 A gas detector is installed on the outside of the negative ion generator.

[0036] As a technical optimization of this utility model, the concentration of pollutants (such as VOCs and particulate matter) in the air after treatment by the negative ion generator 13 is detected in real time by a gas detector to ensure that the emitted air meets the standards; if the detection results do not meet the standards, the purification parameters (such as the speed of the induced draft fan 4 and the power of the ultraviolet lamp 11) can be adjusted in a timely manner to improve the reliability and safety of the device.

[0037] refer to Figure 1 and Figure 4 The front of the purification box 2 is equipped with a controller 18, and the front of the controller 18 is equipped with a human-machine interface.

[0038] As a technical optimization of this utility model, the controller 18 can integrate the operating parameters of each purification mechanism (such as the speed of the induced draft fan 4, the power of the ultraviolet lamp 11, the output intensity of the negative ion generator 13, etc.), and realize manual or automatic control through the human-machine interface. It is convenient to operate and allows operators to adjust the purification mode according to the degree of pollution in the workshop, optimize the purification efficiency, and reduce the difficulty of manual operation.

[0039] refer to Figure 1 and Figure 2 Both the air inlet and outlet of the vent 3 are fixedly connected with protective grilles 19.

[0040] As a technical optimization of this utility model, the protective grille 19 can prevent foreign objects (such as tools and debris) from entering the purification chamber 2, avoiding damage to core components such as the exhaust fan 4, positive electrode plate 6, and ultraviolet lamp tube 11; at the same time, it prevents personnel from contacting internal high-voltage components (such as negative electrode wire 7) or ultraviolet lamp tube 11, improving the safety of the device. In addition, the protective grille 19 does not affect air circulation, and at the same time plays a preliminary guiding role for the air entering the vent 3, ensuring the stable operation of the purification process.

[0041] The working principle and usage process of this utility model are as follows: When using this air purification device in a paint spraying workshop, firstly, the device is moved to the location in the paint spraying workshop where the air needs to be purified using a trolley 1, ensuring that the device is placed stably. Then, the power supply of the device is turned on, and the device is started through the controller 18 (which has a human-machine interface on the front for easy operation) located on the front of the purification box 2. The exhaust fan 4 starts working, and the polluted air in the workshop first enters the ventilation port 3 through the protective grille 19 at the air inlet end of the ventilation port 3. It first passes through the detachable primary filter 15, which is slidably connected in the replacement slot (the replacement slot is located on the front side of the exhaust fan 4). The primary filter 15 performs preliminary filtration of large particles of dust, hair, fibers, and other impurities in the air. The filtered air then passes through the exhaust fan. The air continues to flow under the action of 4, and after passing through the flow equalization plate to make the airflow distribution more uniform, it enters the high-voltage electrostatic purification mechanism. That is, the air enters the high-voltage ionization frame 5. Several alternating positive electrode plates 6 and negative electrode wires 7 (one end of the negative electrode wire 7 is fixed on the same wire frame, the wire frame is fixedly connected to the high-voltage ionization frame 5, and the positive electrode plates 6 and the wire frame are electrically connected to the positive and negative terminals of the high-voltage DC power supply, respectively) on the inner wall of the high-voltage ionization frame 5 generate a high-voltage electric field, which charges the particulate matter in the air. The charged particulate matter then moves towards the electrode plate under the action of the electric field force and is adsorbed. After that, the air continues to flow and passes through the collection tank between the high-voltage electrostatic purification mechanism and the activated carbon adsorption and catalytic purification mechanism. The detachable low-pressure dust collection frame 16 (which has multiple vertically evenly arranged) is slidably connected. The low-pressure collection plate 17 further adsorbs the fine charged particles that are not completely captured. The collected dust can be cleaned by disassembling the low-pressure dust collection frame 16. Then, the air enters the activated carbon adsorption and catalytic purification mechanism. Through the detachable activated carbon plate 8, the catalytic oxidation mesh 9 (made of precious metal catalyst coated on a metal mesh) in the internal connecting cavity of the activated carbon plate 8 works synergistically with the activated carbon. The activated carbon adsorbs organic waste gas, while the catalytic oxidation mesh 9 catalytically decomposes the organic waste gas, removing some harmful components. After that, the air enters the photocatalytic purification mechanism, that is, inside the connecting frame 10. Several alternating ultraviolet lamps 11 and photocatalytic coating plates 12 (coated with titanium dioxide photocatalytic coating) are arranged on the inner wall of the connecting frame 10. Upon startup, the ultraviolet light emitted by the ultraviolet lamp 11 excites the titanium dioxide photocatalytic coating on the surface of the photocatalytic coating plate 12, generating a strong oxidizing substance that further oxidizes and decomposes residual organic pollutants and odors in the air. The purified air continues to flow to the negative ion generator 13, which then operates. The ion release needle assembly 14, electrically connected to its output end, releases a large number of negative ions. These negative ions combine with residual pollutants in the air, improving air quality. Simultaneously, a gas detector located on the outside of the negative ion generator monitors the purified air to ensure it meets quality standards. Finally, the purified air is discharged from the purification chamber 2 through the protective grille 19 at the outlet of the vent 3, completing the entire air purification process.The controller 18 can adjust the operating parameters of each purification unit according to the detection results of the gas detector and actual needs. When maintenance is required, the primary filter 15, activated carbon plate 8, and low-pressure dust collection frame 16 can be removed and replaced or cleaned.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air purification device for a paint spraying workshop, comprising a trolley (1), characterized in that: The top of the trolley (1) is fixedly connected to a purification box (2). The purification box (2) has an air vent (3) inside. The air vent (3) is provided with a blower (4), a flow equalization plate, a high-voltage electrostatic purification mechanism, an activated carbon adsorption and catalytic purification mechanism, a photocatalytic purification mechanism and a negative ion generating mechanism in sequence from the air inlet to the air outlet. The high-voltage electrostatic purification mechanism includes a high-voltage ionization frame (5). Several positive plates (6) and negative wires (7) are fixedly connected to the inner wall of the high-voltage ionization frame (5). The several positive plates (6) and negative wires (7) are alternately distributed along the airflow direction. One end of several negative wires (7) is fixedly connected to the same wire frame. The wire frame is fixedly connected to the high-voltage ionization frame (5). The positive plates (6) and the wire frame are electrically connected to the positive and negative terminals of a high-voltage DC power supply, respectively. The activated carbon adsorption and catalytic purification mechanism includes a detachable activated carbon plate (8), the activated carbon plate (8) has a connecting cavity inside, and a catalytic oxidation mesh (9) is provided inside the connecting cavity. The photocatalytic purification mechanism includes a connecting frame (10), and a plurality of ultraviolet lamps (11) and a photocatalytic coating plate (12) are fixedly connected to the inner wall of the connecting frame (10), and the plurality of ultraviolet lamps (11) and the photocatalytic coating plate (12) are arranged alternately along the airflow direction; The negative ion generating mechanism includes a negative ion generator (13), which is installed inside the purification box (2). The output end of the negative ion generator (13) is electrically connected to an ion release needle group (14).

2. The air purification device for a paint spraying workshop according to claim 1, characterized in that: The purification box (2) has a replacement slot on one side, and the replacement slot is located in front of the induced draft fan (4). A detachable primary filter (15) is slidably connected inside the replacement slot.

3. The air purification device for a paint spraying workshop according to claim 1, characterized in that: A collection trough is provided between the high-voltage electrostatic purification mechanism and the activated carbon adsorption and catalytic purification mechanism. A detachable low-pressure dust collection frame (16) is slidably connected inside the collection trough. Multiple vertically evenly arranged low-pressure collection plates (17) are fixedly connected inside the low-pressure dust collection frame (16).

4. The air purification device for a paint spraying workshop according to claim 1, characterized in that: A gas detector is installed on the outside of the negative ion generating mechanism.

5. The air purification device for a paint spraying workshop according to claim 1, characterized in that: The front of the purification box (2) is provided with a controller (18), and the front of the controller (18) is provided with a human-machine interface.

6. The air purification device for a paint spraying workshop according to claim 1, characterized in that: The air inlet and outlet of the vent (3) are both fixedly connected with protective grilles (19).

Images