Dry paint mist filtration and purification unit

Abstract

This utility model discloses a dry paint mist filtration and purification unit, belonging to the field of dry paint mist filtration and purification technology. It includes a wooden tray with an outer casing on top. The outer casing has two side positioning perforated plates inside. In this utility model, large paint mist particles are intercepted through physical collision between the lower glass fiber tube bundle and the paint mist. The high-speed paint mist airflow is also appropriately slowed and diverted. The intercepted paint mist settles into the bottom box of the casing due to gravity. Multiple non-direct current channels formed by relatively staggered curved flow plates reduce the airflow velocity, allowing more paint mist particles to be adsorbed by Brownian motion contacting the polyester filter cotton, thus improving the capture efficiency. The upper glass fiber tube bundle, arranged in layers of fine, staggered layers, further disperses the airflow, increasing the contact area between the paint mist particles and the glass fiber felt. Activated carbon filter paper is used to intercept paint mist particles larger than 10 micrometers, further treating residual VOCs and meeting stricter emission standards.

Description

Technical Field

[0001] This utility model relates to the field of dry paint mist filtration and purification technology, and more specifically, to a dry paint mist filtration and purification unit. Background Technology

[0002] A coating line is an industrial production line used for coating workpiece surfaces. Through core processes such as pretreatment, powder coating, and heat curing, it achieves functions such as corrosion resistance, decoration, and wear resistance. Its equipment includes automated systems for cleaning, spraying, and curing, involving technologies such as electrostatic adsorption and UV curing. Applications cover industries such as automotive, hardware, and home appliances. Dry paint mist filtration and purification units are pretreatment equipment for treating paint spraying exhaust gases. Although the capture efficiency of existing paint mist filtration and purification units has reached over 95%, it still does not reach the industry-leading level. Therefore, we have proposed the dry paint mist filtration and purification unit. Utility Model Content

[0003] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a dry paint mist filtration and purification unit.

[0004] To solve the above problems, this utility model adopts the following technical solution: a dry paint mist filtration and purification unit, including a wooden tray, an outer box on the top of the wooden tray, two side positioning plates inside the outer box, a middle positioning plate inside the two side positioning plates, a self-locking wooden strip between the middle positioning plate and the two side positioning plates, multiple lower glass fiber tube bundles on the two side positioning plates and the middle positioning plate, multiple tortuous plates on the two side positioning plates and the middle positioning plate, multiple upper glass fiber tube bundles on the two side positioning plates and the middle positioning plate, a top box on the top of the two side positioning plates, activated carbon filter paper on the top box, a cover plate on the top of the activated carbon filter paper, and a U-shaped frame on the side of the cover plate.

[0005] As a preferred embodiment of this utility model, the outer box includes a box bottom box set on top of a wooden pallet. Side outer box panels are provided on both sides of the top of the box bottom box. A front outer box panel is provided on one side of the two side outer box panels, and a back outer box panel is provided on the other side of the side outer box panels. A back wooden frame is provided on the inner side of the back outer box panel. A dust cover is provided on top of the side outer box panels, the front outer box panel, and the back outer box panel.

[0006] As a preferred embodiment of this utility model, a mist inlet is provided on the outer side of the back outer box panel.

[0007] As a preferred embodiment of this utility model, the lower and upper fiberglass tube bundles are composed of welded wire mesh rolled tubes and high-density fiberglass felt strips.

[0008] As a preferred embodiment of this utility model, the meandering plate is composed of a welded wire mesh frame, U-shaped strips, and polyester filter cotton.

[0009] As a preferred embodiment of this utility model, the activated carbon filter paper is made by folding the filter paper and then hot-pressing and curing it.

[0010] The advantages of this utility model are: (1) In this utility model, large paint mist particles are intercepted by physical collision between the lower glass fiber tube bundle and the paint mist, and the high-speed paint mist airflow is appropriately reduced and diverted. The intercepted paint mist settles into the bottom box of the box due to gravity. Through multiple non-direct current channels formed by the relatively staggered curved plates, the airflow speed is reduced, so that more paint mist particles are adsorbed by Brownian motion contacting the polyester filter cotton, thereby improving the collection efficiency. Through the upper glass fiber tube bundle arranged layer by layer, the airflow is further dispersed, increasing the contact area between the paint mist particles and the glass fiber felt. Activated carbon filter paper is used to intercept paint mist particles larger than 10 microns, which can further treat residual VOCs and meet stricter emission standards. It is practical. The dry paint mist filtration and purification unit provided by this utility model has a more stable structure than existing products, reduces maintenance time by 20%, increases the paint mist collection efficiency from ≥95% to ≥99.9%, and the pressure difference is ≤200Pa, VOCs With a removal rate of ≥90%, a 20% increase in usage time, and a 20% increase in the weight of recovered paint residue, it has reached a leading level in the industry.

[0011] (2) In this utility model, the activated carbon filter paper is folded by folding method and hot pressing curing method is used to prevent the folded activated carbon filter paper from rebounding. During the entire process of intercepting and filtering the paint mist airflow, when the activated carbon filter paper is blocked by paint mist particles, the activated carbon filter paper can be removed from the top box and the cover plate for replacement. The detachable design realizes convenient replacement of activated carbon filter paper and has good practicality. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 is an exploded view of the overall structure of this utility model.

[0014] Figure 3 is a schematic diagram of the side positioning hole plate of this utility model.

[0015] Figure 4 is a schematic diagram of the structure of the intermediate positioning hole plate of this utility model.

[0016] Figure 5 is a structural schematic diagram of the self-locking wooden strip of this utility model.

[0017] Figure 6 is a structural schematic diagram of the cover plate of this utility model.

[0018] Figure 7 is a structural schematic diagram of the U-shaped frame of this utility model.

[0019] Figure 8 is a structural schematic diagram of the wooden frame of the back panel of this utility model.

[0020] Figure 9 is a structural schematic diagram of the top box of this utility model.

[0021] The labels in the diagram are as follows: 1. Wooden pallet; 2. Box bottom; 3. Side outer box panel; 4. Front outer box panel; 5. Back outer box panel; 6. Middle positioning hole plate; 7. Side positioning hole plate; 8. Upper fiberglass tube bundle; 9. Fluidized plate; 10. Lower fiberglass tube bundle; 11. Dust cover; 12. Cover plate; 13. Activated carbon filter paper; 14. Top box; 15. Mist inlet; 16. Outer box; 17. U-shaped frame; 18. Back panel wooden frame; 19. Self-locking wooden strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0025] As shown in Figures 1 to 9, the dry paint mist filtration and purification unit includes a wooden tray 1. An outer casing 16 is mounted on top of the wooden tray 1. Two side positioning plates 7 are installed inside the outer casing 16. A middle positioning plate 6 is installed inside the two side positioning plates 7. A self-locking wooden strip 19 is fitted between the middle positioning plate 6 and the two side positioning plates 7. Multiple lower glass fiber tube bundles 10 are installed on the two side positioning plates 7 and the middle positioning plate 6. Multiple meandering plates 9 are installed on the two side positioning plates 7 and the middle positioning plate 6. Multiple upper glass fiber tube bundles 8 are installed on the two side positioning plates 7 and the middle positioning plate 6. A top box 14 is mounted on top of the two side positioning plates 7. Activated carbon filter paper 13 is mounted on the top box 14. The activated carbon filter paper 13 adopts a folded design, which increases the contact area between the filter paper and the paint mist airflow, prolongs the paint mist residence time, and avoids perpendicular contact between the paint mist airflow and the filter paper, preventing filter paper deformation. It can intercept paint mist particles larger than 10 microns, with a collection efficiency of over 99.9%, and can further treat residual VOCs to meet stricter emission standards. During use, the activated carbon filter paper 13, with its higher collection efficiency, is easily clogged and saturated by paint mist particles. To make fuller use of the paint mist filtration and purification unit and save costs more effectively, a detachable design is adopted. The mortise and tenon structure allows the cover plate 12 to fit the equipment more effectively, facilitating disassembly and assembly, greatly reducing the manual time spent replacing filter paper, and significantly reducing equipment operating costs. Specifically, the top box 14, with its large-mesh cardboard box design, supports, fixes, and limits the activated carbon filter paper 13, and an exhaust mask plate 12 is installed on top. The cover plate 12 and the back panel wooden frame 18 on the outer box 5 use a mortise and tenon structure to facilitate the disassembly and replacement of the activated carbon filter paper 13. A U-shaped frame 17 made of 30×30mm wood is placed above the cover plate 12. By fixing it in place, it can be tightly connected with the back outer box panel 5, the side outer box panel 3, and the front outer box panel 4, which can effectively limit the position of the cover plate 12, so as to prevent the activated carbon filter paper 13 from deforming due to the displacement of the cover plate 12 during the interception and filtration of paint mist airflow. This can also ensure the stability and sealing of the overall structure of the filtration and purification unit, and reduce the risk of damage due to uncontrollable factors during transportation. The top of the activated carbon filter paper 13 is provided with the cover plate 12, and the side of the cover plate 12 is provided with a U-shaped frame 17. The bottom box 2 of the box is a paint sludge recycling and treatment layer. The space where the lower glass fiber tube bundle 10 is located forms an inertial expansion interception layer, the space where the meandering plate 9 is located forms a meandering diffusion interception layer, the space where the upper glass fiber tube bundle 8 is located forms a core interception layer, and the space where the activated carbon filter paper 13 is located forms an optimized fine interception layer. Example 2

[0026] Based on Embodiment 1, as shown in Figures 1 and 2, the outer casing 16 includes a casing bottom box 2 set on top of the wooden pallet 1. Side outer casing panels 3 are provided on both sides of the top of the casing bottom box 2. A front outer casing panel 4 is provided on one side of the two side outer casing panels 3, and a back outer casing panel 5 is provided on the other side of the side outer casing panels 3. A back panel wooden frame 18 is provided on the inner side of the back outer casing panel 5. A dust cover 11 is provided on the top of the side outer casing panels 3, the front outer casing panel 4, and the back outer casing panel 5. To ensure more convenient positioning and installation, slots are designed at each connection point, which can not only assist in positioning but also make the connection of each component tighter. Example 3

[0027] Based on Embodiments 1 and 2, as shown in Figures 1 and 2, a mist inlet 15 is provided on the outer side of the outer casing 5. Paint mist is introduced into the purification unit through the mist inlet 15. The lower fiberglass tube bundle 10 and the upper fiberglass tube bundle 8 are composed of welded wire mesh rolled tubes and high-density fiberglass felt strips. The wire diameter of the welded wire mesh is 1.0 mm, and the mesh spacing is 30 mm × 30 mm. The high-density fiberglass felt strips are filled into the welded wire mesh rolled tubes. After the paint mist airflow enters the equipment, a pre-treatment step is performed to intercept as many paint mist particles as possible. Multiple inertial collision interception layers composed of lower fiberglass tube bundles 10 are installed between the meandering diffusion interception layer and the paint mist airflow inlet. The alternately arranged lower fiberglass tube bundles 10 can not only intercept large paint mist particles through physical collision in the initial stage of filtration and interception, but also appropriately slow down and divert the high-speed paint mist airflow. The intercepted paint mist can then drip continuously into the paint mist recovery and treatment area at the bottom of the box due to the principle of gravity settling. The array-like staggered arrangement disperses the high-speed paint mist airflow while allowing large paint mist particles to escape the original high-pressure airflow trajectory due to inertia. This reduces the pressure on subsequent paint mist filtration and interception processes, effectively extending the overall service life of the equipment. Furthermore, when the paint mist airflow passes through the upper fiberglass bundle 8, the layered, finely staggered upper fiberglass bundle 8 further disperses the airflow, increasing the contact area between the paint mist particles and the fiberglass felt. This is the core interception layer, where the paint mist particle capture efficiency can reach over 95%. The meandering plate 9 consists of a welded wire mesh skeleton, U-shaped strips, and polyester filter cotton. The meandering plate 9 uses a welded wire mesh with a wire diameter of 1.2mm and a mesh size of 30mm×30mm as the skeleton, supported by U-shaped strips on both sides, and covered with a 5mm thick layer. Polyester filter cotton with multiple staggered baffles 9 arranged in a staggered manner. When the paint mist airflow enters the staggered diffusion interception zone, it passes through multiple non-direct current channels formed by the staggered baffles 9, which greatly reduces the airflow velocity and increases the residence time of the paint mist airflow in the chamber. This allows more paint mist particles to be adsorbed by Brownian motion contacting the polyester filter cotton, further reducing secondary entrainment of paint mist and improving capture efficiency. Activated carbon filter paper 13 is made by folding and hot-pressing the filter paper.

[0028] It should be noted that this utility model is a dry paint mist filtration and purification unit. During installation, firstly, the two side outer box panels 3 are inserted into the back outer box panel 5 through the slots. The two side positioning hole plates 7 and the middle positioning hole plate 6 are connected, fixed and limited using self-locking wooden strips 19. Then, the filter interception components of each stage are inserted into the holes on the side positioning hole plates 7 and the middle positioning hole plate 6. The interception components are the lower glass fiber tube bundle 10, the meandering plate 9 and the upper glass fiber tube bundle 8, so as to complete the internal installation. Then, the upper side outer box panel 3 and the front outer box panel 4 are installed on the outside of the two side positioning hole plates 7 to complete the sealing of the box. Finally, the box is placed in the bottom box 2 and sealed. The top box 14 and activated carbon filter paper 13 are installed, and the cover plate 12 and U-shaped frame are snapped in. The dust cover 11 is then placed on the wooden tray 1 and fixed to complete the installation.

[0029] In operation, paint mist is first introduced into the outer casing 16 through the mist inlet 15. Large paint mist particles are intercepted through physical collisions between the lower fiberglass tube bundle 10 and the paint mist, while the high-speed paint mist airflow is appropriately slowed and diverted. The intercepted paint mist drips continuously into the paint mist recovery and treatment area at the bottom of the casing due to gravity settling. Then, when the paint mist airflow enters the meandering diffusion interception area, it passes through multiple non-direct current channels formed by the relatively staggered meandering plates 9, greatly reducing the airflow velocity and increasing the residence time of the paint mist airflow in the outer casing 16. This allows more paint mist particles to be adsorbed due to Brownian motion contacting the polyester filter cotton, further reducing secondary entrainment of paint mist and improving collection efficiency. Then, the airflow is further dispersed by the layered, finely staggered upper fiberglass tube bundle 8, increasing the contact area between the paint mist particles and the fiberglass felt. This is the core interception layer, where the paint mist particle collection efficiency can reach over 95%. Finally, activated carbon filter paper 13 is used to intercept 10... For paint mist particles larger than micrometers, the capture efficiency can reach over 99.9%, and it can further treat residual VOCs to meet stricter emission standards.

[0030] The dry paint mist filtration and purification unit provided by this utility model has a more stable structure than existing products, reduces maintenance time by 20%, increases paint mist collection efficiency from ≥95% to ≥99.9%, pressure difference ≤200Pa, VOCs removal rate ≥90%, increases service life by 20%, and increases paint residue recovery weight by 20%, reaching the leading level in the industry.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. Dry paint mist filtration and purification unit comprising a wooden pallet (1), characterized in that: The wooden pallet (1) is provided with an outer box (16) on top. The outer box (16) is provided with two side positioning hole plates (7) inside. The inner side of the two side positioning hole plates (7) is provided with a middle positioning hole plate (6). A self-locking wooden strip (19) is fitted between the middle positioning hole plate (6) and the two side positioning hole plates (7). Multiple lower glass fiber tube bundles (10) are provided on the two side positioning hole plates (7) and the middle positioning hole plate (6). Multiple flow plates (9) are provided on the two side positioning hole plates (7) and the middle positioning hole plate (6). Multiple upper glass fiber tube bundles (8) are provided on the two side positioning hole plates (7) and the middle positioning hole plate (6). A top box (14) is provided on the top of the two side positioning hole plates (7). Activated carbon filter paper (13) is provided on the top of the top box (14). A cover plate (12) is provided on the top of the activated carbon filter paper (13). A U-shaped frame (17) is provided on the side of the cover plate (12).

2. The dry paint mist filtration and purification unit of claim 1, wherein: The outer box (16) includes a box bottom box (2) set on top of the wooden pallet (1). Side outer box panels (3) are provided on both sides of the top of the box bottom box (2). A front outer box panel (4) is provided on one side of the two side outer box panels (3). A back outer box panel (5) is provided on the other side of the side outer box panels (3). A back wooden frame (18) is provided on the inner side of the back outer box panel (5). A dust cover (11) is provided on the top of the side outer box panels (3), the front outer box panel (4) and the back outer box panel (5).

3. The dry paint mist filtration and purification unit of claim 2, wherein: The outer side of the back panel (5) is provided with a mist inlet (15).

4. The dry paint mist filtration and purification unit of claim 1, wherein: The lower fiberglass tube bundle (10) and the upper fiberglass tube bundle (8) are composed of welded wire mesh rolled tubes and high-density fiberglass felt strips.

5. The dry paint mist filtration and purification unit of claim 1, wherein: The meandering plate (9) is composed of an electric welded wire mesh frame, U-shaped strips and polyester filter cotton.

6. The dry paint mist filtration and purification unit of claim 1, wherein: The activated carbon filter paper (13) is made by folding the filter paper and then hot-pressing and curing it.

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