Air filtering equipment with filter element convenient to replace

Abstract

The utility model discloses air filtering equipment with a filter element convenient to replace, and relates to the field of folding filter element replacement, the air filtering equipment comprises a fixed frame and a movable frame which are installed at an air inlet of the filtering equipment, the folding filter element is installed in an inner cavity of the fixed frame and an inner cavity of the movable frame, and a concentric-square-shaped plate protruding inwards is formed at one end of the inner side of the fixed frame. A butt joint frame matched with the inner wall of the fixed frame is integrally formed at the end, close to the fixed frame, of the movable frame. Filter element extension parts which extend outwards in a plane state are formed at the two ends of the folding filter element; positioning units are distributed on the fixed frame and the movable frame and are used for positioning and mounting the filter element extension part. According to the utility model, the filter element extension part and the positioning unit are arranged, so that when the filter element is replaced, the problem that the filtering performance of the filter element is reduced due to deviation of the folding filter element caused by the fact that the two sides of the folding filter element are not mounted in place can be prevented.

Description

Technical Field

[0001] The utility model relates to the field of folded filter element replacement, in particular to an air filtering device which is convenient for replacing the filter element. Background Art

[0002] Filtering equipment is a kind of equipment that filters impurities contained in the gas passing through the equipment to make the gas cleaner.

[0003] In the prior art, there are various filter elements, such as textile layer filter elements, activated carbon filter elements, etc., all of which use their internal micropores to intercept and filter impurities;

[0004] As the filter element is used for a longer time, the impurities trapped by the filter element increase, and the ventilation efficiency decreases. At the same time, in order to avoid bacterial growth, the filter element is generally replaced;

[0005] Taking the foldable filter element as an example, it is generally made of textile materials and has no fixed points at both ends. When installing it in the filter frame, it is necessary to manually adjust the edge of the folded filter element and then close the frame after the adjustment. However, in the process of closing the frame, uneven force is prone to occur, causing the folded filter element to deviate, resulting in incomplete fit between the folded filter element and the filter element frame, causing the filtration performance of the folded filter element to decrease. Utility Model Content

[0006] The purpose of the utility model is to provide an air filtering device which is convenient for replacing filter elements in order to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air filter device for convenient replacement of filter elements, comprising a fixed frame and a movable frame installed at the air inlet of the filter device, the inner cavities of the fixed frame and the movable frame are installed with folded filter elements, an inner end of the fixed frame is formed with a circular plate protruding inward, and an end of the movable frame close to the fixed frame is integrally formed with a docking frame that matches the inner wall of the fixed frame;

[0008] Both ends of the folded filter element are formed with filter element extension parts extending outward in a planar state;

[0009] Positioning units are distributed on the fixed frame and the movable frame, and the positioning units are used to position and install the extended portion of the filter element;

[0010] The extended portion of the filter element is provided with a circular hole which matches the positioning unit.

[0011] As a further solution of the utility model: the fixed frame is integrally formed with an inwardly protruding circular plate away from the inner edge of the movable frame, and the middle section of the inner edge of the fixed frame away from the movable frame and the middle section of the inner edge of the circular plate are both integrally formed with a protruding block.

[0012] As a further solution of the utility model: the positioning unit comprises a docking post and a docking sleeve, and one of the docking posts is coaxially aligned with one of the docking sleeves;

[0013] The docking sleeve is integrally formed on the moving frame and the protruding block integrally formed with the moving frame;

[0014] The docking column is integrally formed on the circular plate and the protruding block integrally formed with the circular plate;

[0015] The docking column and the docking sleeve protrude toward each other on a coaxial line.

[0016] As a further solution of the utility model: the positioning unit also includes a rubber ring integrally formed on the outer wall of the docking column, and the inner wall of the docking sleeve is provided with a slot; the diameter of the slot is smaller than the diameter of the rubber ring.

[0017] As a further solution of the utility model: square grooves for gas circulation are provided at the centers of the movable frame and the circular plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. By providing the filter element extension part and the positioning unit, when replacing the filter element, it can prevent the folded filter element from deviating due to the improper installation of the two sides of the folded filter element, thereby causing the filtration performance of the filter element to decrease. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0022] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0023] Figure 4 For the utility model Figure 3 A partial enlarged view of point A in the middle.

[0024] In the figure: 1. fixed frame; 2. movable frame; 3. docking frame; 4. protruding block; 5. docking column; 6. docking sleeve; 7. folded filter element; 8. filter element extension; 9. rubber ring; 10. circular plate; 11. slot. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 to Figure 4 In an embodiment of the utility model, an air filtering device for convenient replacement of filter elements comprises a fixed frame 1 and a movable frame 2 installed at the air inlet of the filtering device, a folded filter element 7 is installed in the inner cavity of the fixed frame 1 and the movable frame 2, an inner end of the fixed frame 1 is formed with a circular plate 10 protruding inward, and an end of the movable frame 2 close to the fixed frame 1 is integrally formed with a docking frame 3 that matches the inner wall of the fixed frame 1; filter element extension parts 8 that extend outward in a planar state are formed at both ends of the folded filter element 7; positioning units are distributed on the fixed frame 1 and the movable frame 2, and the positioning units are used to position and install the filter element extension part 8; a circular hole that matches the positioning unit is opened on the filter element extension part 8.

[0027] In this embodiment: when disassembling the folded filter element 7, the docking frame 3 is first pulled outward from the inner wall of the fixed frame 1 until the docking frame 3 is completely separated from the fixed frame 1. During this process, the two parts of the positioning unit are separated and no longer limit the folded filter element 7. At this time, the filter element extension part 8 is separated from the positioning unit, and the used folded filter element 7 can be taken out; then the new folded filter element 7 is taken out, and the circular holes of the filter element extension part 8 at both ends of the folded filter element 7 are aligned with the positioning unit, and then docked with the positioning unit after alignment; then the docking frame 3 is snapped into the inner wall of the fixed frame 1, and during this process, the two parts of the docking unit are re-engaged to install and fix the folded filter element 7; until the docking frame 3 is completely snapped into the inner wall of the fixed frame 1, at this time, the two sides of the end of the docking frame 3 away from the movable frame 2 are against the edges of the filter element extension part, further forming a limit for the folded filter element 7.

[0028] Please refer to Figure 2 , Figure 3 and Figure 4The fixed frame 1 is integrally formed with an inwardly protruding circular plate 10 at the inner edge away from the moving frame 2, and the middle section of the inner edge of the fixed frame 1 away from the moving frame 2 and the middle section of the inner edge of the circular plate 10 are both integrally formed with a protruding block 4; the positioning unit includes a docking column 5 and a docking sleeve 6, and one docking column 5 is coaxially aligned with one docking sleeve 6; the docking sleeve 6 is integrally formed on the moving frame 2 and the protruding block 4 integrally formed with the moving frame 2; the docking column 5 is integrally formed on the circular plate 10 and the protruding block 4 integrally formed with the circular plate 10; the docking column 5 and the docking sleeve 6 protrude toward each other on the coaxial line; the positioning unit also includes a rubber ring 9 integrally formed on the outer wall of the docking column 5, and a card slot 11 is opened on the inner wall of the docking sleeve 6; the diameter of the card slot 11 is smaller than the diameter of the rubber ring 9.

[0029] In this embodiment: during the process of the docking frame 3 being inserted into the inner wall of the fixed frame 1, the docking sleeve 6 is inserted into the outer wall of the docking column 5. During the docking process, the inner wall of the docking sleeve 6 squeezes the rubber ring 9, and the rubber ring 9 is deformed under the pressure until the docking frame 3 is completely inserted into the inner wall of the fixed frame 1. At this time, the rubber ring 9 is aligned with the card slot 11. At this time, the rubber ring 9 is reset and stuck in the inner cavity of the card slot 11. Since the diameter of the card slot 11 is smaller than the diameter of the rubber ring 9, the reset of the rubber ring 9 is not complete, and there will be a large friction between the two, thereby ensuring the connection stability of the docking sleeve 6 and the docking column 5.

[0030] Please refer to Figure 1 and Figure 2 The moving frame 2 and the circular plate 10 are both provided with square grooves at the center for gas circulation.

[0031] In this embodiment, the two square grooves are directly opposite to the folded filter element 7 , and gas can flow through them. Impurities contained in the flowing gas can be filtered by the folded filter element 7 .

[0032] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An air filtering device for conveniently replacing a filter element, comprising a fixed frame (1) and a movable frame (2) installed at an air inlet of the filtering device, wherein a folded filter element (7) is installed in the inner cavity of the fixed frame (1) and the movable frame (2), and characterized in that: An inwardly protruding circular plate (10) is formed at one end of the inner side of the fixed frame (1), and a docking frame (3) that matches the inner wall of the fixed frame (1) is integrally formed at one end of the movable frame (2) close to the fixed frame (1); Both ends of the folded filter element (7) are formed with filter element extension portions (8) extending outward in a planar state; Positioning units are distributed on the fixed frame (1) and the movable frame (2), and the positioning units are used to position and install the filter element extension portion (8); The filter element extension portion (8) is provided with a circular hole which matches the positioning unit.

2. The air filtering device for convenient filter element replacement according to claim 1, characterized in that: The fixed frame (1) is integrally formed with an inwardly protruding circular plate (10) at an inner edge away from the movable frame (2), and a protruding block (4) is integrally formed at the middle section of the inner edge of the fixed frame (1) away from the movable frame (2) and the middle section of the inner edge of the circular plate (10).

3. The air filtering device for convenient filter element replacement according to claim 2, characterized in that: The positioning unit comprises a docking post (5) and a docking sleeve (6), wherein one docking post (5) and one docking sleeve (6) are coaxially aligned; The docking sleeve (6) is integrally formed on the moving frame (2) and the protruding block (4) integrally formed with the moving frame (2); The docking column (5) is integrally formed on the circular plate (10) and the protruding block (4) integrally formed with the circular plate (10); The docking column (5) and the docking sleeve (6) protrude towards each other on a coaxial line.

4. The air filtering device for convenient filter element replacement according to claim 3, characterized in that: The positioning unit further comprises a rubber ring (9) integrally formed on the outer wall of the docking column (5), and the inner wall of the docking sleeve (6) is provided with a slot (11); the diameter of the slot (11) is smaller than the diameter of the rubber ring (9).

5. The air filtering device for convenient filter element replacement according to claim 3, characterized in that: The movable frame (2) and the circular plate (10) are both provided with square grooves at the centers thereof for gas circulation.

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