Quick-change structure of pre-filter screen

Abstract

The utility model provides a pre-filter screen quick-change structure, which is applied to the technical field of quick-release structures, and adopts the technical scheme that the pre-filter screen quick-change structure comprises an air inlet square box, an insertion opening is formed in the air inlet square box, a slide way frame connected with the insertion opening is arranged in the air inlet square box, and a filter plate covering an air inlet is inserted in the slide way frame; a pressing plate abutting against the filtering plate is arranged on the upper cover of the inserting opening and detachably connected with the air inlet box body through a hasp. The filter plate comprises a filter screen and a filter frame fixed around the filter screen; when the filter plate is inserted into the sliding chute, the outer side wall of the filter frame is attached to the inner side wall of the sliding chute; the utility model has the technical effects of simple structure, good sealing performance and convenience in installation, replacement and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of quick-disassembly structures, in particular to a pre-filter quick-change structure. Background Art

[0002] The dust removal equipment is used to separate dust from the air. The pre-filter is installed at the air inlet of the dust removal equipment. When the dust removal equipment inhales dust, it can effectively prevent sparks in the dust from directly entering the dust removal equipment, thus preventing sparks from causing damage to the dust removal equipment.

[0003] The common installation of pre-filter is mainly to add a cover plate on it and fix it with upper bolts. Workers need to repeatedly tighten the bolts during installation and replacement, which is very inconvenient. The improvement scheme on the market mainly uses star-shaped handles for installation. The installation of star-shaped handles requires manual control of tightness, and the sealing cannot be well controlled. Utility Model Content

[0004] The utility model aims to provide a pre-filtering screen quick-change structure, which has the advantages of simple structure, good sealing performance, and convenient installation, replacement and maintenance.

[0005] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0006] A pre-filter quick-change structure comprises an air inlet box, a socket is provided on the air inlet box, a slide frame connected to the socket is arranged in the air inlet box, and a filter plate covering the air inlet is inserted in the slide frame;

[0007] A pressing plate abutting against the filter plate is provided on the upper cover of the socket, and the pressing plate is detachably connected to the air inlet box body through a buckle.

[0008] Through the above technical scheme, the air inlet square box is used to cover the air inlet; the filter plate is inserted into the air inlet square box through the socket; the two sides of the filter plate are inserted into the slide frame and covered on the air inlet, so as to facilitate the installation, removal and replacement of the filter plate; the two sides of the filter plate are inserted into the slide frame to strengthen the sealing between the filter plate and the air inlet square box, so as to improve the sealing performance; the pressure plate is used to fix the filter plate on the air inlet square box, and the pressure plate is detachably connected to the air inlet box body through a buckle to realize quick installation and quick removal of the pressure plate; therefore, the quick-change structure has a simple structure, good sealing performance, and is convenient for installation, replacement and maintenance.

[0009] In an embodiment of the present invention, the filter plate includes a filter screen and a filter frame fixed around the filter screen.

[0010] Through the above technical solution, the filter frame is used to support the filter screen.

[0011] In one embodiment of the utility model, a slide groove is provided on the slide frame, and when the filter plate is inserted into the slide groove, the outer wall of the filter frame and the inner wall of the slide groove are attached together.

[0012] Through the above technical solution, the gap between the slide chute and the filter frame is reduced, thereby improving the sealing performance.

[0013] In one embodiment of the present invention, sockets are provided on two opposite side walls of the air inlet box.

[0014] In an embodiment of the present invention, the slide frame is a cross structure, and the slide groove is arranged on the side wall of the slide frame.

[0015] Through the above technical solution, the filter plate can be conveniently inserted into the air inlet box.

[0016] In one embodiment of the present invention, one of the pressing plates is detachably connected to the air inlet box via two buckles.

[0017] Through the above technical solution, the pressing plate is firmly fixed on the air inlet box.

[0018] In one embodiment of the utility model, the buckle includes a fixed positive buckle fixed on the pressure plate and a movable buckle arranged on the air inlet box body;

[0019] The movable buckle comprises a base fixed on the air inlet box body, a handle hinged to the base, a connecting frame hinged to the handle, and a movable buckle arranged on the connecting frame.

[0020] Through the above technical solution, by pulling the handle, the connecting frame is driven to move forward and backward, so that the movable positive buckle and the movable reverse buckle are engaged or disengaged, thereby realizing quick installation and quick removal of the pressure plate.

[0021] In one embodiment of the utility model, a spring sheet with a U-shaped structure is fixedly provided on the connecting frame;

[0022] An anti-loosening plate is integrally formed at one end of the spring sheet, and a bayonet for engaging with the anti-loosening plate is provided on the handle.

[0023] Through the above technical solution, the anti-loosening plate passes through the bayonet on the handle, and the anti-loosening plate cooperates with the bayonet to prevent the connecting frame and the handle from shaking back and forth, so that the connecting frame and the handle are more stably fixed relative to each other, thereby making the fixed positive buckle and the movable reverse buckle more stably fixed.

[0024] In one embodiment of the utility model, the movable buckle includes a claw, a screw rod fixedly connected to the claw, and a nut meshingly connected to the screw rod; the nut abuts against the spring sheet, and the screw rod meshes with the spring sheet and the connecting frame.

[0025] Through the above technical solution, the screw rod is meshed with the spring sheet and the connecting frame, and the exposed length of the screw rod can be adjusted by rotating the nut, thereby adjusting the distance between the buckle claw and the fixed buckle, making it convenient to adjust the installation position during use.

[0026] As described above, the pre-filter quick-change structure of the utility model has the following beneficial effects:

[0027] The two sides of the filter plate are inserted into the slide frame and covered on the air inlet, so as to facilitate the installation, removal and replacement of the filter plate; the two sides of the filter plate are inserted into the slide frame to strengthen the sealing between the filter plate and the air inlet box, so as to improve the sealing performance; the pressure plate is used to fix the filter plate on the air inlet box, and the pressure plate is detachably connected to the air inlet box body by a buckle to realize quick installation and quick removal of the pressure plate; therefore, the quick-change structure has a simple structure, good sealing performance, and is convenient for installation, replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0029] Figure 2 yes Figure 1 The enlarged schematic diagram of part A in the middle;

[0030] Figure 3 It is a schematic diagram of disassembly and assembly of the overall structure of an embodiment of the utility model;

[0031] Figure 4 yes Figure 3 The enlarged schematic diagram of part B in the middle;

[0032] Figure 5 It is a side view of the air inlet box of the embodiment of the utility model;

[0033] Figure 6 yes Figure 5 The enlarged schematic diagram of part C in the middle;

[0034] Figure 7 It is a structural schematic diagram of an active buckle according to an embodiment of the utility model.

[0035] Figure numerals: 1, air inlet; 2, air inlet box; 3, socket; 4, slide frame; 5, filter plate; 6, pressure plate; 7, buckle; 8, filter screen; 9, filter frame; 10, slide groove; 71, fixed positive buckle; 72, movable buckle; 721, base; 722, handle; 723, connecting frame; 724, movable reverse buckle; 17, spring sheet; 18, anti-loosening plate; 19, bayonet; 7241, buckle claw; 7242, screw; 7243, nut. DETAILED DESCRIPTION

[0036] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0037] See also Figures 1 to 7 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0038] See also Figures 1 to 7 The utility model provides a pre-filter quick-change structure, including an air inlet box 2, a socket 3 is provided on the air inlet box 2, and the sockets 3 are vertically provided on both side walls of the air inlet box 2 in this embodiment; a slide frame 4 connected to the socket 3 is provided in the air inlet box 2, the slide frame 4 is bolted to the inner wall of the air inlet box 2 located at the air inlet 1, and a filter plate 5 covering the air inlet 1 is inserted in the slide frame 4; the filter plate 5 can be inserted in the air inlet box 2 through the sockets 3 on both sides; the filter plate 5 includes a filter screen 8 and a filter frame 9 clamped or bolted around the filter screen 8, and the filter frame 9 is used to support the filter screen 8;

[0039] The slide frame 4 is a cross structure, and a slide groove 10 is provided on the side wall of the slide frame 4. In this embodiment, four filter plates 5 can be inserted on the slide frame 4; when the filter plate 5 is inserted on the slide frame 4, the slide groove 10 wraps the three sides of the filter plate 5, and the outer wall of the filter frame 9 is attached to the inner wall of the slide groove 10, thereby reducing the gap between the slide groove 10 and the filter frame 9, thereby improving the sealing performance;

[0040] A pressing plate 6 abutting against the filter plate 5 is provided on the upper cover of the socket 3, and the pressing plate 6 is detachably connected to the air inlet box body 2 through a buckle 7, so as to realize quick installation and quick removal of the pressing plate 6; one pressing plate 6 is connected to the air inlet square box 2 through two buckles 7, and the buckles 7 are arranged at the top and bottom of the pressing plate 6, so that the pressing plate 6 is firmly fixed on the air inlet square box 2;

[0041] The buckle 7 includes a fixed buckle 71 fixed to the pressure plate 6 by bolts and a movable buckle 72 arranged on the outer side wall of the air inlet box body 2;

[0042] The movable buckle 72 includes a base 721 fixed by bolts on the outer wall of the air inlet box 2, a handle 722 hinged to the base 721, a connecting frame 723 hinged to the handle 722, and a movable buckle 724 arranged on the connecting frame 723;

[0043] A U-shaped spring sheet 17 is fixedly provided on the connecting frame 723; the spring sheet 17 is sleeved on the connecting frame 723 and fixed by clamping or welding; an anti-loosening plate 18 is integrally formed at one end of the spring sheet 17, and a bayonet 19 is provided on the handle 722, and the anti-loosening plate 18 passes through the bayonet 19, and the anti-loosening plate 18 cooperates with the bayonet 19 to prevent the connecting frame 723 and the handle 722 from shaking back and forth, so that the connecting frame 723 and the handle 722 are more stably fixed together, and then the fixed positive buckle 71 and the movable reverse buckle 724 are more stably clamped and fixed;

[0044] The movable reverse buckle 724 includes a buckle claw 7241, a screw rod 7242 integrally formed with one end of the buckle claw 7241, and a nut 7243 meshed with the screw rod 7242; the nut 7243 abuts against the spring sheet 17, and the screw rod 7242 meshes with the spring sheet 17 and the connecting frame 723; the exposed length of the screw rod 7242 can be adjusted by rotating the nut 7243, so that the distance between the buckle claw 7241 and the fixed positive buckle 71 can be adjusted, and the installation position can be adjusted conveniently during use;

[0045] Brief description of the use process: first, insert the filter plate 5 into the socket 3, and insert the filter frame 9 into the slide frame 4 respectively, push the filter plate 5 into the air inlet box 2 and cover the filter plate 5 on the air inlet 1; then use two pressing plates 6 to cover the socket 3, pull the handle 722, so that the buckle claws are clamped and fixed with the positive buckle 71, so as to fix the pressing plate 6 and the filter plate 5 on the air inlet box 2, and realize the installation of the filter plate 5;

[0046] On the contrary, the handle 722 is pulled to disengage the claw from the fixed buckle 71 ; after removing the pressing plate 6 , the filter plate 5 is pulled out from the slide frame 4 through the socket 3 , so that the filter plate 5 can be disassembled or replaced.

[0047] In summary, the utility model has a simple structure, good sealing performance, and is convenient to install, replace and maintain. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A pre-filter quick-change structure, characterized in that: It comprises an air inlet box (2), a socket (3) is provided on the air inlet box (2), a slide frame (4) connected to the socket (3) is arranged in the air inlet box (2), and a filter plate (5) covering the air inlet (1) is inserted in the slide frame (4); A pressure plate (6) abutting against the filter plate (5) is provided on the upper cover of the socket (3), and the pressure plate (6) is detachably connected to the air inlet (1) box body via a buckle (7).

2. A pre-filter quick-change structure according to claim 1, characterized in that: The filter plate (5) comprises a filter screen (8) and a filter frame (9) fixed around the filter screen (8).

3. A pre-filter quick-change structure according to claim 2, characterized in that: The slide frame (4) is provided with a slide groove (10), and when the filter plate (5) is inserted into the slide groove (10), the outer wall of the filter frame (9) and the inner wall of the slide groove (10) are attached together.

4. A pre-filter quick-change structure according to claim 3, characterized in that: Sockets (3) are provided on two opposite side walls of the air inlet box (2).

5. A pre-filter quick-change structure according to claim 4, characterized in that: The slide frame (4) is a cross structure, and the slide groove (10) is arranged on the side wall of the slide frame (4).

6. The pre-filter quick-change structure according to claim 1, characterized in that: One of the pressing plates (6) is detachably connected to the air inlet box (2) via two buckles (7).

7. A pre-filter quick-change structure according to claim 6, characterized in that: The buckle (7) comprises a fixed buckle (71) fixed on the pressure plate (6) and a movable buckle (72) arranged on the air inlet (1) box body; The movable buckle (72) comprises a base (721) fixed on the air inlet (1) box body, a handle (722) hinged to the base (721), a connecting frame (723) hinged to the handle (722), and a movable buckle (724) arranged on the connecting frame (723).

8. A pre-filter quick-change structure according to claim 7, characterized in that: A spring sheet (17) with a U-shaped structure is fixedly arranged on the connecting frame (723); An anti-loosening plate (18) is integrally formed at one end of the spring sheet (17), and a bayonet (19) for engaging with the anti-loosening plate (18) is provided on the handle (722).

9. A pre-filter quick-change structure according to claim 8, characterized in that: The movable buckle (724) comprises a buckle claw (7241), a screw rod (7242) fixedly connected to the buckle claw (7241), and a nut (7243) meshingly connected to the screw rod (7242); the nut (7243) abuts against the spring sheet (17), and the screw rod (7242) is meshingly connected to the spring sheet (17) and the connecting frame (723).

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