A removable frame for a prefilter

Abstract

The utility model provides a kind of detachable frame for primary efficiency filter, it is related to primary efficiency filter technical field, it includes: first frame body, second frame body, filter cloth and buckling piece, it is spaced apart with multiple first fixed rods on opposite inner side wall surface;Multiple second fixed rods are spaced apart on the opposite inner side wall surface of second frame body;One end of second frame body is hinged with one end of first frame body;Filter cloth is located between first frame body and second frame body, and is extruded by each first fixed rod and each second fixed rod;Buckling piece is located on the wall surface of first frame body and the wall surface of second frame body, for buckling first frame body and second frame body;Wherein, each first fixed rod is located between two adjacent second fixed rods.The frame can achieve only replace filter cloth and do not affect the effect of secondary use of frame, and improve the replacement efficiency of filter cloth.

Description

Technical Field

[0001] This utility model relates to the field of primary filter technology, and specifically to a detachable frame for a primary filter. Background Technology

[0002] Air conditioning units are fundamental to ensuring cleanliness in the polysilicon industry. Among them, the pre-filter, as the first filtration stage of the air conditioning unit, will become clogged after a period of use and need to be replaced. This is especially true in northern regions with high winds and dust, where the replacement of the pre-filter will be more frequent.

[0003] Currently, during the use of primary filters, only the primary filter cloth becomes dirty and clogged. However, the manufacturer assembles the frame and filter cloth as a whole finished product. If the filter cloth needs to be removed and replaced, the frame needs to be removed. Once the entire frame is disassembled, it is impossible to continue using the frame while only replacing the filter cloth, which leads to waste of materials. Utility Model Content

[0004] To address the problem that existing primary filters cannot be recycled and reused, this invention provides a detachable frame for primary filters, which allows for the replacement of only the filter cloth without affecting the secondary use of the frame, and improves the efficiency of filter cloth replacement.

[0005] The technical solution adopted in this utility model is:

[0006] A detachable frame for a pre-filter is provided, comprising:

[0007] A first frame has multiple first fixing rods spaced apart on its inner sidewalls; a second frame has multiple second fixing rods spaced apart on its inner sidewalls; one end of the second frame is hinged to one end of the first frame; a filter cloth is located between the first and second frames and is compressed by each first fixing rod and each second fixing rod; a fastening member is located on the wall of the first frame and the wall of the second frame for fastening the first and second frames; wherein each first fixing rod is located between two adjacent second fixing rods.

[0008] Optionally, the central axes of the plurality of first fixing rods are parallel to each other, and the central axes of the plurality of second fixing rods are parallel to each other.

[0009] Optionally, the central axis of each first fixing rod is parallel to the central axis of each second fixing rod.

[0010] Optionally, the vertical distance between the central axis of each first fixing rod and the central axis of the two adjacent second fixing rods is equal.

[0011] Optionally, each first fixing rod and each second fixing rod are U-shaped rods. When the filter cloth is located between the first frame and the second frame, each second fixing rod will squeeze the filter cloth located between two adjacent first fixing rods into a V-shape.

[0012] Optionally, a support plate is provided on the wall of the first frame to support the fastener.

[0013] Optionally, a groove is provided on the outer top of the first frame, and a support rod located inside the groove is rotatably connected to the outer top of the first frame to support the second frame.

[0014] Optionally, a limiting plate is provided circumferentially on the outer wall surface of the first frame to limit the position of the second frame.

[0015] Optionally, the filter cloth is folded around its perimeter toward the direction of gas intake.

[0016] Optionally, the fastener is a ball-operated lock.

[0017] The beneficial effects of this utility model are:

[0018] In use, the fastening mechanism is adjusted to allow the second frame to rotate around its hinge point with the first frame. During this rotation, the first and second frames separate. The filter cloth is then placed on the surface of the first frame, where multiple first fixing rods within the first frame support it. After the filter cloth is in place, the second frame is rotated until it contacts the first frame. The fastening mechanism is then adjusted to lock the two frames together, preventing further rotation. When the second frame contacts the first frame, the multiple second fixing rods inside the second frame compress the filter cloth on their surfaces. This compression causes the filter cloth to move towards the first fixing rods, which further compress it, thus securing the filter cloth. When the filter cloth needs to be replaced, simply adjust the fasteners and rotate the second frame. At this time, the filter cloth will not be squeezed by multiple first and second fixing rods. After removing the filter cloth for replacement, follow the steps above. The replacement efficiency is greatly improved, allowing the first and second frames to be reused multiple times, thus reducing costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the detachable frame for a primary filter disclosed in this utility model.

[0021] Figure 2 for Figure 1 A top-view structural diagram;

[0022] Figure 3 for Figure 1 Front view structural diagram;

[0023] Figure 4 for Figure 1 A schematic diagram of the rear view structure;

[0024] Figure 5 for Figure 1 A magnified view of a portion of point A in the middle;

[0025] Figure 6 This is a top view of the first frame structure.

[0026] Figure label:

[0027] 1-First frame, 10-First fixing rod, 11-Support plate, 12-Groove, 13-Support rod;

[0028] 2-Second frame, 20-Second fixing rod;

[0029] 3-Hinges;

[0030] 4-Fastening parts;

[0031] 5-Limit plate. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 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 utility model.

[0033] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0034] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0035] Example

[0036] Please see Figure 1-5 As shown, this embodiment discloses a detachable frame for a pre-filter, including a first frame 1 and a second frame 2. The side wall cross-sections of the first frame 1 and the second frame 2 are both L-shaped. One end of the first frame 1 and one end of the second frame 2 are hinged together using a hinge 3, allowing rotation between the first frame 1 and the second frame 2. In this embodiment, the rotation of the second frame 2 toward the first frame 1 is specifically described. Multiple first fixing rods 10 are provided on the opposite inner wall surfaces of the first frame 1, spaced apart from adjacent first fixing rods 10. Multiple second fixing rods 20 are provided on the opposite inner wall surfaces of the second frame 2, spaced apart from adjacent second fixing rods 20. Each first fixing rod 10 is located between two adjacent second fixing rods 20. When placing the filter cloth, rotate the second frame 2, then place the filter cloth into the first frame 1 until the filter cloth is positioned on the surface of the multiple first fixing rods 10 in the first frame 1. At this point, rotate the second frame 2 back. When the second frame 2 comes into contact with the first frame 1, the multiple second fixing rods 20 in the second frame 2 will press towards the filter cloth. During the pressing process of each second fixing rod 20, each first fixing rod 10 will also press towards the filter cloth, thus pressing the filter cloth tightly between the first frame 1 and the second frame 2, forming a V-shape. It is worth noting that each first fixing rod 10 and each second fixing rod 20 is a U-shaped rod. When the second frame 2 rotates to be close to the first frame 1, the notch of each first fixing rod 10 is opposite to the notch of each second fixing rod 20, allowing each second fixing rod 20 and each first fixing rod 10 to press and tighten the filter cloth. A groove 12 is provided on the top outer surface of the first frame 1, and a support rod 13 located in the groove 12 is rotatably connected to the top outer surface of the first frame 1. That is, when the second frame 2 is rotated open on the top outer surface of the first frame 1, in order to facilitate the placement of the filter cloth on the multiple first fixing rods 10 inside the first frame 1, the support rod 13 can be rotated so that the other end of the support rod 13 supports the second frame 2, making it convenient to place the filter cloth.

[0037] Fastening components 4 are provided on the walls of the first frame 1 and the second frame 2. When the second frame 2 rotates to be close to the first frame 1, the fastening components 4 are adjusted to fasten the second frame 2 and the first frame 1, preventing rotation between the second frame 2 and the first frame 1 from causing the filter cloth to fall off and thus affecting the filtration effect. In this embodiment, the fastening component 4 is specifically a ball-operated lock. The ball-operated lock has the advantages of good sealing, high security, corrosion and rust resistance, durability, and simple operation. It can be easily and quickly opened without complicated steps or great force, thereby improving the efficiency of filter cloth replacement.

[0038] The central axes of each of the first fixing rods 10 are parallel to each other, and the central axes of each of the second fixing rods 20 are parallel to each other. That is, the placement of the first fixing rods 10 and the second fixing rods 20 has been adjusted. Compared with the first fixing rods 10 or the second fixing rods 20 that are not parallel to each other, it can reduce the situation where the filter cloth has different filtration effects along the central axis of the first fixing rod 10 or the second fixing rod 20 during the process of the filter cloth being compressed by the first fixing rods 10 and the second fixing rods 20.

[0039] Furthermore, the central axis of each first fixing rod 10 and the central axis of each second fixing rod 20 are parallel to each other. When the filter cloth is compressed by multiple second fixing rods 20 and multiple first fixing rods 10, considering two adjacent first fixing rods 10 and the second fixing rod 20 located between them, the filter cloth at this point will be compressed into a V-shape. If the first fixing rod 10 and the two second fixing rods 20 are not parallel, the filter cloth will have different angles near the inner wall of the first frame 1. These different angles will result in different filtration effects at different positions on the inner wall of the first frame 1. The end with the smaller angle will have a poorer filtration effect, causing particles to accumulate on the filter cloth's surface, leading to blockage. It is worth noting that the angle here refers to the angle of the filter cloth towards the second frame 2, and this angle changes with the degree of compression of the second fixing rod 20 towards the first frame 1.

[0040] Furthermore, the vertical distance between the central axis of each first fixing rod 10 and the central axis of the two adjacent second fixing rods 20 is equal. That is, each first fixing rod 10 is located exactly in the middle of the two adjacent second fixing rods 20. This ensures that the angle of the V-shaped filter cloth formed by the second fixing rods 20 along the direction of the first fixing rod 10 is the same at any position of the first fixing rod 10, preventing different filtration effects of the filter cloth at different positions of the first fixing rod 10. It is worth noting that during the movement of the second frame 2 toward the first frame 1 in this embodiment, each second fixing rod 20 does not penetrate too deeply into the gap between adjacent first fixing rods 10. That is, when each second fixing rod 20 compresses the filter cloth into a V-shape on the first fixing rod 10, the angle formed by the filter cloth toward the second frame 2 is not too small, preventing the filter cloth from accumulating filter material due to filtration obstruction, which would affect the normal use of the filter cloth.

[0041] When the first frame 1 and the second frame 2 are fastened together by the fastening member 4, the filter cloth located between the first frame 1 and the second frame 2 is folded around its perimeter toward the inlet of the subsequent gas. That is, the filter cloth is compressed around its perimeter. It should be noted that in this embodiment, the filter cloth will fold when it is compressed by multiple first fixing rods 10 and multiple second fixing rods 20, that is, the filter cloth will take on a wave-like shape. This will make the overall size of the filter cloth actually needed larger than the first frame 1 and the second frame 2. After the filter cloth is compressed, there is still a certain amount of redundant space around its perimeter. This allows the filter cloth to fold toward the gas inlet and also to contact the inner wall surface of the second frame 2 or the inner wall surface of the first frame 1. This ensures that there are no gaps inside the first frame 1 and the second frame 2 for the gas to pass through, and prevents unfiltered gas from passing through gaps and affecting air quality.

[0042] A support plate 11 is provided on the wall of the first frame 1 to support the fastener 4. Specifically, the support plate 11 is located on the inner wall of the first frame 1, and the fastener 4 is also located on the inner wall of the first frame 1 and the second frame 2. When the filter cloth is pressed between the first frame 1 and the second frame 2, the fastener 4 can prevent it from affecting the assembly of the first frame 1 and the second frame 2 in the air conditioning unit during the subsequent installation of the first frame 1 and the second frame 2 inside the air conditioning unit. When the first frame 1 and the second frame 2 are fastened together by the fastener 4, there is a gap between the first frame 1 and the second frame 2. This gap allows the fastener 4 to be adjusted and opened / closed, thereby removing the rotation restriction between the first frame 1 and the second frame 2.

[0043] A limiting plate 5 is provided circumferentially on the outer wall surface of the first frame 1. When the second frame 2 rotates to be close to the first frame 1, the limiting plate 5 can limit the rotation of the second frame 2 and prevent the second frame 2 from falling during the rotation process.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detachable frame for a pre-filter, characterized in that, include: A first frame has a plurality of first fixing rods spaced apart on its inner sidewalls; a second frame has a plurality of second fixing rods spaced apart on its inner sidewalls; one end of the second frame is hinged to one end of the first frame; a filter cloth is located between the first frame and the second frame and is compressed by each of the first fixing rods and each of the second fixing rods; a fastening member is located on the wall of the first frame and the wall of the second frame for fastening the first frame and the second frame; wherein each first fixing rod is located between two adjacent second fixing rods.

2. The detachable frame for a pre-filter according to claim 1, characterized in that, The central axes of the plurality of first fixing rods are parallel to each other, and the central axes of the plurality of second fixing rods are parallel to each other.

3. The detachable frame for a pre-filter according to claim 2, characterized in that, The central axis of each of the first fixing rods is parallel to the central axis of each of the second fixing rods.

4. The detachable frame for a pre-filter according to claim 3, characterized in that, The vertical distance between the central axis of each of the first fixing rods and the central axes of the two adjacent second fixing rods is equal.

5. The detachable frame for a pre-filter according to claim 4, characterized in that, Each of the first fixing rods and each of the second fixing rods is a U-shaped rod. When the filter cloth is located between the first frame and the second frame, each of the second fixing rods will squeeze the filter cloth located between two adjacent first fixing rods into a V-shape.

6. The detachable frame for a pre-filter according to claim 5, characterized in that, The first frame has a support plate on its wall surface for supporting the fasteners.

7. The detachable frame for a pre-filter according to claim 1, characterized in that, The top outer edge of the first frame has a groove, and a support rod located inside the groove is rotatably connected to the top outer edge of the first frame to support the second frame.

8. The detachable frame for a pre-filter according to claim 1, characterized in that, The outer wall of the first frame is provided with a limiting plate in the circumferential direction to limit the position of the second frame.

9. The detachable frame for a pre-filter according to claim 1, characterized in that, The filter cloth is folded around its perimeter toward the direction of gas intake.

10. The detachable frame for a pre-filter according to claim 1, characterized in that, The fastening component is a ball-operated lock.

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