An environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure

Abstract

This utility model discloses an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure, including a cabinet. An exhaust fan is fixed to the top of the cabinet. A drawer frame is located at the top of the cabinet's interior. A drawer frame is installed in the drawer frame cavity. A placement rack and a gas storage chamber are respectively located below the drawer frame cavity. The placement rack is located at the front end of the gas storage chamber and has a stepped rack. A connecting groove is located at the rear end of the stepped rack. A paper mesh frame is installed on the front end of the connecting groove. A filter paper mesh is placed on the paper mesh frame. The drawer frame includes a first filter frame, and a second filter frame is located between the drawer frame cavity and the gas storage chamber. In this paint mist dry filtration device with an auxiliary sealing structure, paint mist gas flows into the gas storage chamber after being filtered by the filter paper mesh. The gas then rises and undergoes two filtrations, passing through the second filter frame and the first filter frame, before finally being discharged by the exhaust fan. This filtration device effectively improves the filtration effect of the paint mist gas.

Description

Technical Field

[0001] This utility model relates to the technical field of dry filtration equipment, specifically an environmentally friendly water-based paint mist dry filtration equipment with an auxiliary sealing structure. Background Technology

[0002] During the painting process in the spray booth, a large amount of paint mist is generated. Therefore, a dry filter cabinet is needed to absorb the paint mist. Dry filter cabinets are widely used because they do not require water circulation and have low maintenance costs.

[0003] In existing technologies, such as the water-based paint spray booth with patent number CN212120582U, although the multi-layer filter paper mesh and the placement frame form an interlocking structure, and the placement frame and multi-layer filter paper mesh of the same shape and size ensure the accuracy of their positions and avoid displacement during use that would affect the absorption effect of water-based paint, this interlocking structure is prone to loosening under long-term vibration, creating gaps and causing air leakage, resulting in insufficient sealing. In addition, the filtration system design of this patent uses linear filtration, passing the airflow sequentially through multiple layers of filter paper mesh and adsorption layer. Its single filtration path results in a short contact time between paint mist particles and filter media, affecting the filtration effect.

[0004] Therefore, it is necessary to design a paint mist dry filtration device that can improve sealing and filtration efficiency, and solve the problems of insufficient sealing and single filtration path of dry filtration devices. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure, which solves the problems of insufficient sealing and single filtration path in dry filtration devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure, including a cabinet, an exhaust fan at the top of the cabinet, a drawer frame cavity at the top of the cabinet, a detachable drawer frame inserted into the drawer frame cavity, a placement rack and an air storage chamber respectively below the drawer frame cavity, and the placement rack being located at the front end of the air storage chamber.

[0007] The placement rack is equipped with multiple tiered shelves, and the inner wall of each tiered shelf is provided with a T-shaped groove. The T-shaped groove is connected to a T-shaped magnetic plate by a spring.

[0008] The rear end of the stepped frame is provided with a connecting groove, and the front end of the connecting groove is provided with a paper mesh frame. The paper mesh frame is provided with a filter paper mesh. Both the stepped frame and the paper mesh frame are provided with corresponding semi-circular grooves. A locking rod is rotatably provided inside the semi-circular groove.

[0009] The drawer includes a filter frame, a sealing block is fixedly installed at the front end of the filter frame, a fixing plate is fixedly installed at the front end of the sealing block, and a handle is fixedly installed at the front end of the fixing plate.

[0010] The front end of the filter frame is provided with an air outlet. The upper end of the filter frame is fixed with a baffle by bolts, and the bottom end is fixed with a horizontal filter screen by bolts. The rear side of the air outlet is provided with a slot, and a vertical filter screen is inserted into the slot.

[0011] A second filter frame is provided between the draw frame cavity and the gas storage chamber. The second filter frame includes a fixed frame, which is installed at the top of the gas storage chamber and located below the draw frame cavity. A fixed sleeve is provided inside the fixed frame. An upper support plate is fixed above the fixed sleeve, and a lower support plate is fixed below it. An upper filter screen is provided at one end of the upper support plate, and a lower filter screen is provided at one end of the lower support plate.

[0012] Preferably, the side of the upper filter screen away from the upper support plate is in contact with the fixing sleeve, and the side of the lower filter screen away from the lower support plate is in contact with the fixing sleeve.

[0013] Preferably, multiple sets of upper and lower support plates are arranged alternately in the vertical direction, with the upper support plate and upper filter screen located on one side of the fixed sleeve and the lower support plate and lower filter screen located on the other side of the fixed sleeve.

[0014] Preferably, multiple sets of the vertically placed filter screens are provided, and the top of the vertically placed filter screens is in contact with the baffle.

[0015] Preferably, there are four sets of T-shaped magnetic plates arranged in a rectangular shape. The outer surface of the T-shaped magnetic plates is provided with magnetic suction panels, which are magnetically and movably connected to the outer periphery of the paper mesh frame.

[0016] Preferably, the stepped frame has three layers, which decrease in size from the outside to the inside, and each layer of the stepped frame is adapted to the paper mesh frame through a connecting groove.

[0017] Preferably, the locking rod is rotatably connected to the inside of a semi-circular groove on one side of the step frame via a pivot pin.

[0018] Preferably, the filter paper mesh has an accordion-style pleated structure, with honeycomb-shaped micropores on the surface and filled with high-grammage fiber cotton inside.

[0019] Compared with the prior art, this utility model provides an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure, which has the following beneficial effects:

[0020] 1. This environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure utilizes the combined magnetic attraction of the T-shaped magnetic plate and the elasticity of the spring. Even when the device vibrates during operation, the sealing surfaces of the paper mesh frame and the stepped frame remain tightly fitted, reducing the direct entry of paint mist gas into the device through gaps. This allows the paint mist gas to pass through the filter paper mesh more concentratedly and avoids the air leakage problem caused by vibration and loosening of traditional clamping structures.

[0021] 2. This environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure forms a serpentine flow between the staggered upper and lower filter screens. The detour forces the paint mist particles to repeatedly collide and be adsorbed by the filter screens. This design not only extends the gas residence time, but also intercepts paint mist particles step by step through the gradient layout of the filter screens, significantly improving the filtration effect and avoiding the efficiency bottleneck of a single filtration path. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure according to the present invention;

[0023] Figure 2 This is a partial sectional view of the cabinet of an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure according to the present invention.

[0024] Figure 3 This is a partial cross-sectional view of the filter paper mesh of an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure as described in this utility model.

[0025] Figure 4 This is a schematic diagram of the stepped frame of an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure as described in this utility model;

[0026] Figure 5 This is an internal cross-sectional view of an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure as described in this utility model.

[0027] The markings in the attached diagram are described below:

[0028] 1. Cabinet; 2. Exhaust fan; 3. Placement rack; 4. Step rack; 5. Connecting groove; 6. Paper mesh frame; 7. Filter paper mesh; 8. Semi-circular groove; 9. Locking rod; 10. Drawer cavity; 11. Drawer frame; 110. Filter frame one; 111. Sealing block; 12. T-slot; 13. T-shaped magnetic plate; 14. Filter frame two; 15. Air storage chamber; 16. Baffle; 17. Horizontal filter screen; 18. Slot; 19. Vertical filter screen; 20. Fixing frame; 21. Fixing sleeve; 22. Upper support plate; 23. Lower support plate; 24. Upper filter screen; 25. Lower filter screen. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, not to 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. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Please see Figure 1-5 This utility model provides an environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure, including a cabinet 1, an exhaust fan 2 at the top of the outside of the cabinet 1, a drawer frame cavity 10 at the top of the inside of the cabinet 1, a foldable drawer frame 11 inserted into the drawer frame cavity 10, and a placement rack 3 and an air storage chamber 15 respectively below the drawer frame cavity 10. The placement rack 3 is located at the front end of the air storage chamber 15.

[0031] The placement rack 3 is equipped with a multi-layer stepped rack 4. The inner wall of each stepped rack 4 is provided with a T-shaped groove 12. The interior of the T-shaped groove 12 is connected to a T-shaped magnetic plate 13 by a spring.

[0032] The rear end of the stepped frame 4 is provided with a connecting groove 5, and a paper mesh frame 6 is installed on the front end of the connecting groove 5. A filter paper mesh 7 is provided on the paper mesh frame 6. A semi-circular groove 8 is correspondingly opened on both the stepped frame 4 and the paper mesh frame 6. A locking rod 9 is rotatably provided inside the semi-circular groove 8.

[0033] The drawer frame 11 includes a filter frame 110. A sealing block 111 is fixedly installed on the front end face of the filter frame 110. The sealing block is pressed against the inner wall of the drawer frame cavity opening by an elastic material. The sealing block 111 can prevent gas from escaping from the drawer frame. A fixing plate is fixedly installed on the front end of the sealing block 111. A handle is fixedly installed on the front end face of the fixing plate.

[0034] The front end of the filter frame 110 is provided with an air outlet. The upper end of the filter frame 110 is fixed with a baffle 16 by bolts, and the bottom end is fixed with a horizontal filter screen 17 by bolts. A slot 18 is provided on the rear side of the air outlet, and a vertical filter screen 19 is inserted into the slot 18.

[0035] A filter frame 24 is provided between the drawer cavity 10 and the gas storage chamber 15. The filter frame 24 includes a fixed frame 20. The fixed frame 20 is installed at the top of the gas storage chamber 15 and located below the drawer cavity 10. A fixed sleeve 21 is provided inside the fixed frame 20. An upper support plate 22 is fixed above the fixed sleeve 21 and a lower support plate 23 is fixed below it. An upper filter screen 24 is provided at one end of the upper support plate 22 and a lower filter screen 25 is provided at one end of the lower support plate 23.

[0036] Furthermore, the side of the upper filter screen 24 away from the upper support plate 22 is in contact with the fixing sleeve 21, and the side of the lower filter screen 25 away from the lower support plate 23 is in contact with the fixing sleeve 21.

[0037] Furthermore, multiple sets of upper support plates 22 and lower support plates 23 are staggered in the vertical direction. The upper support plate 22 and the upper filter screen 24 are located on one side of the fixed sleeve 21, and the lower support plate 23 and the lower filter screen 25 are located on the other side of the fixed sleeve 21. When the gas passes through the upper filter screen 24 and the lower filter screen 25 staggered on both sides, the gas is forced to flow upward in a serpentine manner, thereby increasing the gas's travel inside the filter frame 14 and helping to improve the filtration effect.

[0038] Furthermore, multiple sets of vertically placed filters 19 are provided. The top of the vertically placed filters 19 contacts the baffle 16. The baffle 16 can press and fix the vertically placed filters 19 inside the slot 18. Multiple sets of vertically placed filters, together with horizontally placed filters, form a grid-like filtration structure, thereby improving the filtration effect.

[0039] Furthermore, there are four sets of T-shaped magnetic plates 13 arranged in a rectangular pattern. Each T-shaped magnetic plate has a magnetically attached panel on its outer side, which is magnetically and movably connected to the outer periphery of the paper mesh frame 6. The four sets of T-shaped magnetic plates 13 are magnetically connected to the outer periphery of the paper mesh frame 6 in a rectangular pattern. Under the action of springs, the T-shaped magnetic plates remain firmly attached to the paper mesh frame 6, maintaining the connection even when the equipment vibrates. The two ends of the T-shaped magnetic plates 13 are angled at 45 degrees, allowing adjacent T-shaped magnetic plates 13 to seamlessly connect, thereby sealing the gap between the paper mesh frame 6 and the stepped frame 4. This reduces the direct entry of paint mist gas into the equipment through the gap, allowing the paint mist gas to pass more concentratedly through the filter paper mesh 7, and also reduces paint mist gas leakage.

[0040] Furthermore, the stepped frame 4 has three layers, which decrease in size from the outside to the inside. Each layer of the stepped frame 4 is adapted to the paper mesh frame 6 through the connecting groove 5, and the connection is quickly fixed by the locking rod, which facilitates the installation or replacement of the filter paper mesh.

[0041] Furthermore, the locking rod 9 is rotatably connected to the semi-circular groove 8 on one side of the step frame 4 via a pivot pin. The paper mesh frame 6 is placed on the front end face of the connecting groove 5, and the other end of the locking rod 9 is rotated into the semi-circular groove 8 on one side of the paper mesh frame 6 to fix the paper mesh frame 6 onto the step frame 4. Conversely, the paper mesh frame 6 can be disassembled.

[0042] Furthermore, the filter paper mesh 7 features an accordion-style pleated structure with honeycomb-like micropores on its surface and is filled with high-grammage fiber cotton. The accordion-style pleated structure of the filter paper mesh 7 effectively increases the filtration area, the honeycomb pores effectively optimize airflow distribution, and the high-grammage fiber cotton filling enhances adsorption capacity, making it superior to traditional flat-panel filters.

[0043] In use, the drawer frame 11 is inserted into the drawer frame cavity 10. The sealing block 111 of the drawer frame 11 is pressed against the inner wall of the opening of the drawer frame cavity 10 by the elastic material to form a radial seal, which can prevent the gas in the drawer frame 11 from escaping outward. At the same time, the paper mesh frame 6 is placed on the front end of the connecting groove 5, and then the locking rod 9 is rotated to fix the paper mesh frame 6 on the step frame 4. At this time, the T-shaped magnetic plate 13 extends outward under the action of the spring, and the magnetic suction panel is magnetically connected to the outer peripheral surface of the paper mesh frame 6, sealing the gap between the paper mesh frame 6 and the step frame 4, reducing the direct entry of paint mist gas into the equipment through the gap, making the paint mist gas pass through the filter paper mesh 7 more concentratedly, and also reducing the leakage of paint mist gas.

[0044] After the drawer frame 11 and the paper mesh frame 6 are installed, the exhaust fan 2 is started to draw air out of the cabinet 1. During this process, the paint mist gas generated by the spraying operation inside the paint booth passes through three layers of filter paper mesh 7 in sequence. Large particles of paint mist in the gas are effectively intercepted. After the gas enters the gas storage chamber 15, it continues to flow upward into the interior of the filter frame 14. A serpentine flow is formed between the staggered upper filter screen 24 and lower filter screen 25. Small-diameter particles of paint mist in the gas are intercepted by the filter screens step by step. In this way, the gas is finally filtered through the grid-like filter structure composed of the horizontal filter screen 17 and the vertical filter screen 19 and discharged by the exhaust fan 2. By filtering the gas multiple times, the filtration effect of the gas can be improved.

[0045] 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 environmentally friendly water-based paint mist dry filtration device with an auxiliary sealing structure, comprising a cabinet (1), characterized in that: The cabinet (1) has an exhaust fan (2) at the top of its exterior and a drawer frame cavity (10) at the top of its interior. A detachable drawer frame (11) is inserted into the drawer frame cavity (10). A placement rack (3) and an air storage chamber (15) are respectively located below the drawer frame cavity (10). The placement rack (3) is located at the front end of the air storage chamber (15). The placement rack (3) is provided with a multi-layer stepped rack (4), and the inner wall of each stepped rack (4) is provided with a T-shaped groove (12). The T-shaped groove (12) is connected to a T-shaped magnetic plate (13) by a spring. The rear end of the stepped frame (4) is provided with a connecting groove (5), and a paper mesh frame (6) is installed on the front end of the connecting groove (5). A filter paper mesh (7) is provided on the paper mesh frame (6). A semi-circular groove (8) is provided on both the stepped frame (4) and the paper mesh frame (6). A locking rod (9) is provided inside the semi-circular groove (8). The drawer (11) includes a filter frame (110), a sealing block (111) is fixedly installed at the front end of the filter frame (110), a fixing plate is fixedly installed at the front end of the sealing block (111), and a handle is fixedly installed on the front end face of the fixing plate. The front end of the filter frame (110) is provided with an air outlet. The upper end of the filter frame (110) is fixed with a baffle (16) by bolts, and the bottom end is fixed with a horizontal filter screen (17) by bolts. The rear side of the air outlet is provided with a slot (18), and a vertical filter screen (19) is inserted into the slot (18). A filter frame two (14) is provided between the drawer cavity (10) and the gas storage chamber (15). The filter frame two (14) includes a fixed frame (20). The fixed frame (20) is installed at the top of the gas storage chamber (15) and located below the drawer cavity (10). A fixed sleeve (21) is provided inside the fixed frame (20). An upper support plate (22) is fixed above the fixed sleeve (21), and a lower support plate (23) is fixed below it. An upper filter screen (24) is provided at one end of the upper support plate (22), and a lower filter screen (25) is provided at one end of the lower support plate (23).

2. The environmentally friendly water-based paint dry type filtering device with auxiliary sealing structure according to claim 1, characterized in that: The side of the upper filter screen (24) away from the upper support plate (22) is in contact with the fixing sleeve (21), and the side of the lower filter screen (25) away from the lower support plate (23) is in contact with the fixing sleeve (21).

3. The environmentally friendly water-based paint dry type filtering device with auxiliary sealing structure according to claim 1, characterized in that: The upper support plate (22) and the lower support plate (23) are arranged in multiple sets in an alternating manner in the vertical direction. The upper support plate (22) and the upper filter screen (24) are located on one side of the fixed sleeve (21), and the lower support plate (23) and the lower filter screen (25) are located on the other side of the fixed sleeve (21).

4. The environmentally friendly water-based paint dry type filtering device with auxiliary sealing structure according to claim 1, characterized in that: The longitudinally placed filter screen (19) is provided in multiple sets, and the top of the longitudinally placed filter screen (19) is in contact with the baffle (16).

5. The environmentally friendly water-based paint dry type filtering device with auxiliary sealing structure according to claim 1, characterized in that: The number of T-shaped magnetic plates (13) is four, arranged in a rectangular shape. The outer side of the T-shaped magnetic plates (13) is provided with magnetic suction panels, which are magnetically connected to the outer periphery of the paper mesh frame (6).

6. The environmentally friendly water-based paint dry type filtering device with auxiliary sealing structure according to claim 1, characterized in that: The stepped frame (4) has three layers, which are progressively smaller from the outside to the inside. Each layer of the stepped frame (4) is adapted to the paper mesh frame (6) through the connecting groove (5).

7. The environmentally friendly water-based paint dry-type filtering device with auxiliary sealing structure according to claim 1, characterized in that: The locking rod (9) is rotatably connected in the semicircular groove (8) on one side of the stepped frame (4) through a rotating pin.

8. The environmentally friendly water-based paint dry type filtering device with auxiliary sealing structure according to claim 1, characterized in that: The filter paper net (7) is in an accordion pleat structure, is provided with honeycomb hole-shaped micropores on the surface, and is internally filled with high-gram-weight fiber cotton.

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