Paper frame filter

Abstract

The utility model relates to the technical field of filters, in particular to a paper frame filter which comprises a paper frame and a plastic net, a plurality of air vents are arranged on the paper frame, a positioning frame connected with the paper frame is arranged outside one sides of the air vents, the plastic net is located in the middle of the positioning frame, and the periphery of the plastic net is fixedly connected with the inner wall of the positioning frame in a sealed mode. According to the copper-zinc-free environment filter screen, the requirement for filtering in a copper-zinc-free environment is met, no metal part is arranged, residual-free complete incineration treatment can be carried out after waste, and the copper-zinc-free environment filter screen is environmentally friendly and free of pollution. And the manufacturing cost is reduced, and meanwhile subsequent treatment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a paper frame filter. Background Art

[0002] Paper frame filters are widely used in various places that require air purification due to their low cost of use and high-efficiency filtering performance. Its special wedge-shaped folding design and high-strength cardboard outer frame not only increase the filtering area, but also improve the filtering efficiency, making the paper frame filter the preferred air purification equipment in many fields. After searching, the patent with publication number CN218306808U discloses a paper frame filter, including a paper frame body, a mesh support plate, a honeycomb metal mesh, a filter element and a dustproof structure; the front and back sides of the paper frame body are fixed with a mesh support plate, the front and back sides of the interior of the paper frame body are fixed with a honeycomb metal mesh, the interior of the paper frame body is fixed with a filter element, and the front side of the paper frame body is equipped with a dustproof structure; the dustproof structure includes a dustproof guide frame assembled on the front side of the paper frame body, and a disposable dustproof cloth cover is fixed on the back side of the dustproof guide frame. The left and right sides of the filter are fixed with rotating shafts, and the filter element provided therein is used for filtering. The dust-proof structure provided therein is used to cover the paper frame filter when it is disassembled to prevent dust from being scattered during the disassembly process. The disposable dust-proof cloth cover provided can be opened with the rotation of the dust-proof guide frame to cover the surface of the paper frame filter, thereby blocking the dust. However, this paper frame filter uses a metal mesh, which is relatively expensive. At the same time, it is relatively wasteful in an environment that does not contain copper and zinc elements. At the same time, after it is discarded, it still requires a certain amount of storage space for subsequent recycling and other processing operations. For this reason, a paper frame filter is designed that meets the requirements of a copper-zinc-free environment for filtering and has no metal parts. After it is discarded, it can be completely incinerated without residue, which reduces manufacturing costs and facilitates subsequent processing. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the utility model provides a paper frame filter that meets the filtering requirements of an environment without copper and zinc elements and has no metal components. After being discarded, it can be completely incinerated without residue, reducing manufacturing costs while facilitating subsequent processing of the paper frame filter.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a paper frame filter, comprising a paper frame and a plastic net, wherein a plurality of air vents are provided on the paper frame, and a positioning frame connected to the paper frame is provided on the outside of one side of the plurality of air vents, the plastic net is located in the middle of the positioning frame and is sealed and fixedly connected to the inner wall of the positioning frame on all sides, and a certain air circulation gap is formed between the plastic net and the paper frame, and the positioning frame is set to one of a paper material and a plastic material.

[0007] Preferably, the plastic net is configured as a wavy curved surface, and both ends of the wavy curved surface are fixedly connected to the positioning frame via bending guides.

[0008] Preferably, the bending guide comprises a plastic strip having the same length as the inner width of the positioning frame, and a plurality of plastic shafts are horizontally spaced on the plastic strip, which slide in conjunction with the plastic net guide, and the plurality of plastic shafts fold the plastic net into a wavy shape, and the two ends of the wavy curved surface on the plastic net are respectively fixedly connected to two plastic strips, and the plastic strips are fixedly connected to the positioning frame.

[0009] Preferably, the four corners of the positioning frame are fixedly connected with elastic plastic blocks, a certain positioning gap is formed between the plastic blocks and the paper frame, and a curved surface is provided on the side of the plastic block away from the paper frame.

[0010] Preferably, the multiple vents on the paper frame include multiple diamond-shaped ventilation openings and multiple triangular ventilation openings, the multiple diamond-shaped ventilation openings are located in the middle of the paper frame, and the multiple triangular ventilation openings are located around the multiple diamond-shaped ventilation openings.

[0011] (3) Beneficial effects

[0012] Compared with the prior art, the present invention provides a paper frame filter with the following beneficial effects:

[0013] The paper frame filter, through the setting of the plastic net, can meet the filtering requirements in an environment without copper and zinc elements. The paper frame, positioning frame and plastic net can be completely burned as a whole. When it is discarded, it can be directly incinerated on site without harm, without the need for additional waste storage space and subsequent dust prevention and waste recycling operations. At the same time, the manufacturing cost is reduced. The paper frame filter meets the filtering requirements in an environment without copper and zinc elements and has no metal parts. After being discarded, it can be completely incinerated without residue, which reduces the manufacturing cost and facilitates subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic structural diagram of the utility model from other perspectives;

[0016] Figure 3 This is a schematic diagram of the structure of the paper frame and the positioning frame of the utility model;

[0017] Figure 4 For this utility model Figure 3 Schematic diagram of the local enlarged structure at A in the middle;

[0018] Figure 5 This is a schematic diagram of the exploded structure of the plastic net and the bending guide member of the utility model;

[0019] Figure 6 For this utility model Figure 5 Schematic diagram of the local enlarged structure at B in the middle;

[0020] Figure 7 It is a schematic diagram of the overall decomposition of the structure of the utility model;

[0021] Figure 8 This is a schematic diagram of the structure of the utility model as a whole decomposed from other perspectives.

[0022] Markings in the accompanying drawings: 1. Paper frame; 2. Plastic net; 3. Positioning frame; 4. Plastic strip; 5. Plastic shaft; 6. Plastic block; 7. Arc surface; 8. Diamond-shaped ventilation opening; 9. Triangular ventilation opening. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example:

[0025] See also Figure 1-8 A paper frame filter comprises a paper frame 1 and a plastic net 2. The paper frame 1 is provided with a plurality of vents. A positioning frame 3 fixedly connected to the paper frame 1 is provided on the outside of one side of the plurality of vents. The plastic net 2 is located in the middle of the positioning frame 3 and is fixedly connected to the inner wall of the positioning frame 3 by hot melt on all sides. A certain air circulation gap is formed between the plastic net 2 and the paper frame 1. The positioning frame 3 is set to one of paper material and plastic material.

[0026] Specifically, the plastic net 2 is set to a wavy curved surface, and both ends of the wavy curved surface are fixedly connected to the positioning frame 3 through bending guides. Setting the plastic net 2 to a wavy curved surface facilitates increasing the filtering area and improving the filtering effect. Both ends of the wavy curved surface are fixedly connected to the positioning frame 3 through bending guides, thereby enhancing the shape of the wavy curved surface and preventing it from deforming.

[0027] Specifically, the bending guide includes a plastic strip 4 with the same length as the inner width of the positioning frame 3. A plurality of plastic shafts 5 are horizontally spaced on the plastic strip 4 and are in sliding cooperation with the plastic net 2. The plurality of plastic shafts 5 fold the plastic net 2 into a wavy shape. The two ends of the wavy surface on the plastic net 2 are respectively fixedly connected to two plastic strips 4, and the plastic strip 4 is fixedly connected to the positioning frame 3. Through the plastic strip 4 and the plurality of plastic shafts 5, it is convenient to form a wavy surface of the plastic net 2, and at the same time, it is convenient to fix the plastic net 2 to the positioning frame 3.

[0028] Specifically, the four corners of the positioning frame 3 are fixedly connected with plastic card blocks 6 that are set to be elastic. A certain positioning gap is formed between the plastic card block 6 and the paper frame 1. The side of the plastic card block 6 away from the paper frame 1 is provided with an arc surface 7. Through the setting of the plastic card block 6, it is convenient to fix the paper frame 1 filter and clamp it through the positioning gap. Through the setting of the arc surface 7, it is convenient to flatten the plastic card block 6 and clamp it into the positioning gap.

[0029] Specifically, the multiple ventilation openings on the paper frame 1 include multiple diamond-shaped ventilation openings 8 and multiple triangular ventilation openings 9. The multiple diamond-shaped ventilation openings 8 are located in the middle part of the paper frame 1, and the multiple triangular ventilation openings 9 are located around the multiple diamond-shaped ventilation openings 8. Through the arrangement of the multiple diamond-shaped ventilation openings 8 and the multiple triangular ventilation openings 9, the whole has more common ventilation openings, thereby improving the overall ventilation effect.

[0030] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0031] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0032] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A paper frame filter, characterized by: The invention comprises a paper frame (1) and a plastic net (2), wherein the paper frame (1) is provided with a plurality of vents, and a positioning frame (3) connected to the paper frame (1) is provided on the outside of one side of the plurality of vents, the plastic net (2) is located in the middle of the positioning frame (3) and is sealed and fixedly connected to the inner wall of the positioning frame (3) on all sides, and a certain air circulation gap is formed between the plastic net (2) and the paper frame (1), and the positioning frame (3) is provided with one of a paper material and a plastic material.

2. The paper frame filter according to claim 1, characterized in that: The plastic net (2) is arranged as a wavy curved surface, and both ends of the wavy curved surface are fixedly connected to the positioning frame (3) via bending guides.

3. The paper frame filter according to claim 2, characterized in that: The bending guide comprises a plastic strip (4) having the same length as the inner width of the positioning frame (3); a plurality of plastic shafts (5) are horizontally spaced apart on the plastic strip (4) and are in sliding engagement with the plastic net (2) for guiding; and the plurality of plastic shafts (5) bend the plastic net (2) into a wavy shape; the two ends of the wavy curved surface on the plastic net (2) are respectively fixedly connected to the two plastic strips (4); and the plastic strip (4) is fixedly connected to the positioning frame (3).

4. The paper frame filter according to claim 3, characterized in that: The four corners of the positioning frame (3) are all fixedly connected with plastic card blocks (6) configured to be elastic, a certain positioning gap is formed between the plastic card blocks (6) and the paper frame (1), and a curved surface (7) is provided on the side of the plastic card blocks (6) away from the paper frame (1).

5. The paper frame filter according to claim 4, characterized in that: The multiple vents on the paper frame (1) include multiple diamond-shaped ventilation openings (8) and multiple triangular ventilation openings (9), wherein the multiple diamond-shaped ventilation openings (8) are located in the middle of the paper frame (1), and the multiple triangular ventilation openings (9) are located around the multiple diamond-shaped ventilation openings (8).

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