A filtering device for hot air circulating oven used in aluminum foil processing

Abstract

The application relates to the technical field of aluminum foil processing equipment, in particular to a filtering device for a hot air circulating oven for aluminum foil processing, which comprises a U-shaped frame, a top opening of the U-shaped frame forms a filtering cavity, a cover plate is reversibly covered on the top opening of the U-shaped frame through a hinged structure, the inner side of the U-shaped frame is provided with a plurality of groups of sliding grooves which are symmetrically arranged front and back, the inner side of the sliding grooves is slidably connected with a filter screen frame, a pressing mechanism is arranged on the inner side of the U-shaped frame close to the sliding grooves and is used for applying multi-point uniform pressing force to the filter screen frame when the cover plate is closed, the side surface of the filter screen frame is provided with a filter screen, and the outer side surface of the filter screen frame and the upper surface of the U-shaped frame are both paved with rubber sealing strips. The application realizes the "pulling-out type" disassembly and replacement of the filter screen through the combined design of the sliding grooves and the filter screen frame and the cover plate with the cover lifting type, the replacement time is short, and the operation is convenient; maintenance personnel do not need to stay in a narrow space for a long time to disassemble and assemble the bolts, and the risk of falling and mechanical injury is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of aluminum foil processing equipment technology, specifically a filter device for a hot air circulating oven used in aluminum foil processing. Background Technology

[0002] In the aluminum foil processing industry, hot air circulating ovens are key equipment for ensuring uniform coating curing and improving product sealing. Their core component—the filtration device—is responsible for intercepting dust, impurities, and volatile residues, directly affecting the cleanliness of the aluminum foil surface and the quality of the coating. Traditional filtration devices generally employ a detachable filter screen with a sealing frame, using bolts or simple clips to fix and seal the filter.

[0003] However, this solution has revealed the following significant drawbacks in long-term industrial practice: First, the existing sealing frame relies on multi-bolt mechanical fastening. Replacing the filter requires disassembling all bolts one by one, a cumbersome process that necessitates specialized tools. Furthermore, the ovens are often installed at height or in areas with dense equipment, requiring maintenance personnel to work in confined spaces, significantly increasing the risk of falls and mechanical injuries.

[0004] Secondly, the sealing performance of bolt tightening is highly dependent on the precision of manual operation. Manual tightening makes it difficult to ensure that the bolts are subjected to uniform force, and local sealing failure can lead to hot air leakage, causing fluctuations in the oven temperature field and affecting the uniformity of aluminum foil coating curing. Utility Model Content

[0005] This application provides a filter device for a hot air circulating oven used in aluminum foil processing. The flip-top cover facilitates opening and replacement of the filter screen, and the cover can achieve effective sealing when closed, which can effectively solve the problems in the prior art.

[0006] To achieve the above objectives, this application provides the following technical solution: a filter device for a hot air circulating oven used in aluminum foil processing, comprising;

[0007] The U-shaped frame has an opening at the top that forms a filter chamber.

[0008] The cover plate, via a hinged structure, can be flipped over to cover the opening at the top of the U-shaped frame.

[0009] The inner side of the U-shaped frame is provided with multiple sets of symmetrically arranged sliding grooves, and a filter screen frame is slidably connected to the inner side of the sliding grooves.

[0010] It also includes a clamping mechanism, located inside the U-shaped frame near the slide groove, for applying a multi-point uniform clamping force to the filter screen frame when the cover is closed.

[0011] A filter screen is installed on the side of the filter frame, and rubber sealing strips are laid on the outer side of the filter frame and the upper surface of the U-shaped frame.

[0012] The rear side of the cover plate is provided with a strip plate, and the upper surface of the cover plate is provided with multiple inclined surfaces. When the cover plate is closed, the inclined surfaces of the inclined surfaces press against the clamping mechanism.

[0013] The strip plate has at least one threaded connection with a stud. The upper front side of the U-shaped frame is provided with a second strip plate. When the cover is closed, the end of the stud is in close contact with the lower surface of the second strip plate.

[0014] Preferably, the clamping mechanism is configured in a one-to-one correspondence with the inclined plane.

[0015] Preferably, the clamping mechanism includes a cylindrical body fixedly installed on the inner side of the U-shaped frame. The cylindrical body is fitted with a rod through through holes at both ends of its outer side. An annular pressure plate is provided on the outer side of the rod. The annular pressure plate is connected to the inner side of the cylindrical body through a spring. A universal ball joint is provided at the right end of the rod.

[0016] Preferably, the outer side of the groove is provided with a positioning hole for the insertion rod to pass through.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] 1. This application utilizes a combination design of a sliding groove and a filter frame, along with a flip-top cover, to achieve "pull-out" disassembly and assembly of the filter. This results in short replacement time and convenient operation. Maintenance personnel do not need to spend long periods of time in narrow spaces to disassemble or assemble bolts, significantly reducing the risk of falls and mechanical injuries. This is especially suitable for high-altitude installation scenarios in drying ovens.

[0019] 2. When closing the cover, the inclined body presses the insert rod tightly through the universal ball joint, and the insert rod presses tightly on the filter screen frame to ensure uniform pressure distribution on the filter screen surface; the spring continuously provides constant pressure to compensate for thermal expansion deformation. When the cover is closed, it is only necessary to screw in the headed stud. Even if the headed stud vibrates slightly due to vibration during use, as long as the headed stud is always located below the second strip plate, the sealing of the cover can be guaranteed. Attached Figure Description

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

[0021] Figure 2 This is the main view of this application;

[0022] Figure 3 This is the left view of this application;

[0023] Figure 4 This is a top view of this application;

[0024] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0025] In the diagram: 1. Filter screen frame, 2. Inclined body, 3. Cover plate, 4. Strip plate one, 5. Slide groove, 6. Positioning hole, 7. U-shaped frame, 8. Pressing mechanism, 81. Columnar cylinder, 82. Spring, 83. Universal ball head, 84. Annular pressure plate, 85. Insert rod, 9. Headed stud, 10. Strip plate two. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] In the description of this application, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating directional or positional relationships, they are based on the appendix. Figure 2 The orientations or positional relationships shown are for the convenience of describing this application and simplifying the description only, and are not intended 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 application. When a feature is referred to as "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0028] Please see Figure 1-5 This application provides the following technical solution: a filter device for a hot air circulating oven for aluminum foil processing, comprising;

[0029] The U-shaped frame 7 has an opening at the top that forms a filter chamber;

[0030] Specifically, the open cavity structure facilitates quick removal and placement of the filter, while the U-shaped design provides high-strength support to prevent deformation at high temperatures.

[0031] The cover plate 3 can be flipped over to cover the top opening of the U-shaped frame 7 via a hinged structure;

[0032] Specifically, the flip-top design enables "one-click opening and closing," requiring no tools and significantly reducing the risks associated with high-altitude maintenance.

[0033] The inner side of the U-shaped frame 7 is provided with multiple sets of symmetrically arranged sliding grooves 5, and the inner side of the sliding grooves 5 is slidably connected to the filter screen frame 1.

[0034] Specifically, the chute guide structure allows the filter screen to be pulled out laterally for replacement, which is quick and improves the continuity of the production line.

[0035] It also includes a pressing mechanism 8, which is located inside the U-shaped frame 7 near the slide groove 5, and is used to apply a multi-point uniform pressing force to the filter screen frame 1 when the cover plate 3 is closed;

[0036] Specifically, multi-point dynamic clamping replaces bolt fixing, eliminating deviations in manual pre-tightening force.

[0037] A filter screen is installed on the side of the filter frame 1, and rubber sealing strips are laid on the outer side of the filter frame 1 and the upper surface of the U-shaped frame 7.

[0038] Specifically, the sealing strip design blocks hot air bypass, ensuring long-term sealing reliability.

[0039] The rear side of the cover plate 3 is provided with a strip plate 4, and the upper surface of the cover plate 3 is provided with multiple inclined bodies 2. When the cover plate 3 is closed, the inclined bodies 2 are pressed tightly against the clamping mechanism 8.

[0040] Specifically, the inclined plane automatically triggers the pressing mechanism to press down, achieving "pre-tightening upon closure" and simplifying the operation process.

[0041] The strip plate 4 is threaded with at least one stud 9 with a head. The upper front side of the U-shaped frame 7 is provided with a strip plate 10. When the cover plate 3 is closed, the end of the stud 9 with the head is in close contact with the lower surface of the strip plate 10.

[0042] Specifically, locking the headed stud 9 can achieve the sealing of the cover plate 3, and the operation is simple.

[0043] Furthermore, the clamping mechanism 8 is configured in a one-to-one correspondence with the inclined surface 2.

[0044] Specifically, this setup ensures that each clamping point is precisely matched to the inclined plane drive.

[0045] Furthermore, the clamping mechanism 8 includes a cylindrical body 81 fixedly installed on the inner side of the U-shaped frame 7. The cylindrical body 81 is fitted with a rod 85 through through holes at both ends of its outer side. An annular pressure plate 84 is provided on the outer side of the rod 85. The annular pressure plate 84 is connected to the inner side of the cylindrical body 81 through a spring 82. A universal ball joint 83 is provided at the right end of the rod 85.

[0046] Specifically, when the cover plate 3 is closed, the inclined body 2 on the cover plate 3 presses tightly against the universal ball head 83, the universal ball head 83 pushes the insertion rod 85 to press tightly against the filter screen frame 1, and the rubber sealing strip around the filter screen frame 1 is pressed tightly against the inner side of the slide groove 5, which can ensure that the filter screen frame 1 is sealed around its perimeter.

[0047] Furthermore, the outer side of the slide 5 is provided with a positioning hole 6 for the insertion rod 85 to pass through.

[0048] In use: The air to be filtered enters the interior of the U-shaped frame 7 from the right end, and is filtered by the multi-layer filter screen set inside the U-shaped frame 7. The filtered air is then drawn out from the left end of the U-shaped frame 7 and sent into the drying oven.

[0049] When cleaning or replacing the filter screen, loosen the stud 9, then open the cover plate 3 to quickly pull the filter screen frame 1 out of the slide groove 5. Insert the new filter screen frame 1 into the slide groove 5, close the cover plate 3, and the inclined surface 2 on the cover plate 3 will push the insertion rod 85 to press the filter screen frame 1 tightly. The rubber sealing strip around the filter screen frame 1 will be pressed tightly against the inner side of the slide groove 5, ensuring a sealed environment around the filter screen frame 1. Finally, tighten the cover plate 3 and lock the stud 9 in place.

[0050] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter device for a hot air circulating oven used in aluminum foil processing, characterized in that: include; The U-shaped frame (7) has an opening at the top to form a filter chamber; The cover plate (3) can be flipped over to cover the top opening of the U-shaped frame (7) via a hinged structure; The inner side of the U-shaped frame (7) is provided with multiple sets of symmetrically arranged sliding grooves (5), and the inner side of the sliding grooves (5) is slidably connected to a filter screen (1). It also includes a pressing mechanism (8), which is located inside the U-shaped frame (7) near the slide groove (5) and is used to apply a multi-point uniform pressing force to the filter screen frame (1) when the cover plate (3) is closed; A filter screen is installed on the side of the filter frame (1), and rubber sealing strips are laid on the outer side of the filter frame (1) and the upper surface of the U-shaped frame (7). The rear side of the cover plate (3) is provided with a strip plate (4), and the upper surface of the cover plate (3) is provided with multiple inclined bodies (2). When the cover plate (3) is closed, the inclined bodies (2) press the inclined surfaces of the inclined bodies (2) tightly against the pressing mechanism (8). The strip plate (4) is threaded with at least one stud (9) with a head. The upper end of the front side of the U-shaped frame (7) is provided with a strip plate (10). When the cover plate (3) is closed, the end of the stud (9) with the head is close to the lower surface of the strip plate (10).

2. The filter device for a hot air circulating oven for aluminum foil processing according to claim 1, characterized in that: The clamping mechanism (8) is set in a one-to-one correspondence with the inclined body (2).

3. A filter device for a hot air circulating oven for aluminum foil processing according to claim 2, characterized in that: The clamping mechanism (8) includes a cylindrical body (81) fixedly installed on the inner side of the U-shaped frame (7). The cylindrical body (81) is fitted with a plug rod (85) through through holes at the left and right ends of its outer side. The outer side of the plug rod (85) is provided with an annular pressure plate (84). The annular pressure plate (84) is connected to the inner side of the cylindrical body (81) through a spring (82). The right end of the plug rod (85) is provided with a universal ball head (83).

4. A filter device for a hot air circulating oven for aluminum foil processing according to claim 3, characterized in that: The outer side of the slide (5) is provided with a positioning hole (6) for the insertion rod (85) to pass through.

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