Three-jaw screwed high-efficiency low-resistance dust and poison filtering element

Abstract

The utility model relates to a three-jaw screwing efficient low-resistance dust and poison filtering element, and belongs to the technical field of improvement of filtering elements of gas masks. The mask is composed of a bottom box assembly and a top box assembly, a grating cavity is formed through a bottom cover grating and a top cover grating of the bottom box assembly and the top box assembly, meanwhile, air enters the grating cavity, is filtered through a filter material and then is gathered in a middle air channel, and then the air enters a mask body through a connector. Under the condition that the size of the filter element is not changed, the air inlet area is doubled, the air suction resistance is reduced by half, and air suction is smoother. The weight and the volume of the filter material bodies of the bottom box assembly and the top box assembly of the filtering device of the filtering element are the same, so that the consumption of the filter material bodies of the bottom box and the top box is almost equal, and the problem that the filter material layers are firstly penetrated by harmful substances to fail due to less filter material on one side and thinned filter material layers is avoided; and the problems that a common filter box only has a cover plate grating for air intake, the air intake area is small, the air suction resistance is large, only the filter box needs to be enlarged if the air intake area needs to be enlarged, and a user feels uncomfortable to wear are solved.

Description

Technical Field

[0001] This utility model relates to a three-claw screw-on high-efficiency low-resistance dust and toxic gas filter element, belonging to the technical field of filter element improvement for gas masks. Background Technology

[0002] Filter elements are divided into two types: toxic gas filters and dust filters. Toxic gas filters primarily protect against toxic and harmful gases, while dust filters primarily protect against fine particulate matter such as dust and smoke. In practical applications, many environments containing toxic substances also contain fine particulate matter such as dust and smoke. In these cases, combined dust and toxic gas filters are needed. Combined dust and toxic gas filters can also be used in environments with only dust and smoke or environments with only toxic gases; that is, they are compatible with both dust and toxic gas filters.

[0003] The filter element is a crucial component of a gas mask, directly affecting its protective efficacy and breathing ease. Existing conventional filter elements are limited by the size constraints of the gas mask, restricting their structural size and limiting their air intake area. This results in higher breathing resistance when breathing through the mask (see Appendix). Figure 12 , 13 This can lead to poor breathing for users, especially causing discomfort for users who engage in strenuous physical labor. Therefore, it is necessary to improve the filtration structure of the filter element. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the prior art by providing a filter element composed of a bottom box assembly and a top box assembly. The air intake grilles of the bottom box assembly and the top box assembly simultaneously allow air to enter. After being filtered by the filter material, the air converges in the middle air channel and then enters the mask body through the interface. This doubles the air intake area, halves the air intake resistance, and makes air intake smoother. This is a three-claw screw-connected high-efficiency low-resistance dust and toxic filter element.

[0005] This utility model achieves the above objectives through the following technical solution:

[0006] This three-claw screw-on high-efficiency low-resistance dust and toxic substance filter element consists of a bottom box assembly and a top box assembly. The bottom box assembly comprises a bottom box, a bottom box filter cloth, a filter material body a, a bottom box cover filter cloth, a bottom box cover, and a filter cotton box a. The bottom box cavity contains, from the inside out, the bottom box filter cloth, filter material body a, the bottom box cover filter cloth, and the bottom box cover. The bottom outer surface of the bottom box is fitted with the filter cotton box a. The top box assembly comprises a top box, a top box filter cloth, a filter material body b, a top box cover filter cloth, a top box cover, and a filter cotton box b. The top box cavity contains, from the inside out, the top box filter cloth, filter material b, the top box cover filter cloth, and the top box cover. The top outer surface of the top box is fitted with the filter cotton box b. The top box assembly is snapped onto the top of the bottom box assembly and fixed by ultrasonic welding.

[0007] The filter cotton boxes a and b are respectively filled with folded filter cotton, and the edges of the folded filter cotton are sealed to the edges of the filter cotton boxes with sealant.

[0008] The filter cotton box a is pressed onto the grid of the bottom box, and the filter cotton box b is pressed onto the grid of the top box.

[0009] The bottom box filter cloth is ultrasonically welded or bonded to the bottom of the bottom box cavity, and the bottom box cover filter cloth is ultrasonically welded or bonded to the bottom box cover; the top box filter cloth is ultrasonically welded or bonded to the bottom of the top box cavity, and the top box cover filter cloth is ultrasonically welded or bonded to the top box cover.

[0010] The filter media a and filter media b are made of activated carbon.

[0011] The filter media a is placed on the bottom filter cloth inside the bottom box cavity. The bottom box cover is placed on the bottom box to press the filter media a tightly and then fixed by ultrasonic welding.

[0012] The filter material b is placed on the top box filter cloth inside the top box cavity. The top box cover is placed on the top box to press the filter material b tightly and then fixed by ultrasonic welding.

[0013] The bottom cover has a bottom cover grille, and the top cover has a top cover grille. Both the bottom cover grille and the top cover grille are arranged towards the interface.

[0014] The bottom cover has a flange on its edge, and the top cover has a groove on its edge that corresponds to the flange on the bottom cover.

[0015] The advantages of this utility model compared with the prior art are as follows:

[0016] This three-claw screw-on high-efficiency, low-resistance dust and toxic substance filter element consists of a base box assembly and a top box assembly. The bottom and top cover grilles of the base and top box assemblies form a grille cavity, allowing air to enter simultaneously. After being filtered by the filter media, the air gathers in the central air duct and then enters the mask body through the interface. This design doubles the air intake area and halves the suction resistance while maintaining the same filter element size, resulting in smoother airflow. Furthermore, the filter media in the base and top box assemblies has the same weight and volume, ensuring almost equal consumption of filter media in both boxes. This prevents the problem of one side having less filter media, resulting in a thinner filter layer that is penetrated by harmful substances first and becomes ineffective. It also solves the problem of ordinary filter boxes only having a cover grille for air intake, resulting in a small air intake area and high suction resistance. Increasing the air intake area requires increasing the filter box's air intake area and volume, leading to user discomfort. Attached Figure Description

[0017] Figure 1A schematic diagram of the main structure of a three-claw screw-connected high-efficiency, low-resistance dust and toxic filter element;

[0018] Figure 2 A top view of the structure of a three-claw screw-on high-efficiency, low-resistance dust and toxic substance filter element;

[0019] Figure 3 A bottom view of the structure of a three-claw screw-on high-efficiency, low-resistance dust and toxic substance filter element;

[0020] Figure 4 A cross-sectional structural diagram of a three-claw screw-on high-efficiency, low-resistance dust and toxic substance filter element;

[0021] Figure 5 A three-dimensional cross-sectional view of a high-efficiency, low-resistance dust and toxic substance filter element with a three-claw screw connection.

[0022] Figure 6 This is a three-dimensional structural diagram of the base box assembly;

[0023] Figure 7 This is a three-dimensional structural diagram of the set-top box assembly;

[0024] Figure 8 A three-dimensional structural diagram of a three-claw screw-connected high-efficiency, low-resistance dust and toxicity filter element;

[0025] Figure 9 Exploded views of the bottom box assembly and top box assembly;

[0026] Figure 10 This is a schematic diagram of the filter cotton box.

[0027] Figure 11 This is a schematic diagram of the structure of folded filter cotton;

[0028] Figure 12 This is a front sectional view of an existing common filter element;

[0029] Figure 13 This is a three-dimensional structural diagram of a conventional filter element.

[0030] In the diagram: 1. Bottom box assembly, 101. Bottom box, 102. Bottom box filter cloth, 103. Filter media body a, 104. Bottom box cover filter cloth, 105. Bottom box cover, 106. Bottom cover grid, 107. Filter cotton box a, 108. Interface; 2. Top box assembly, 201. Top box, 202. Top box filter cloth, 203. Filter media body b, 204. Top box cover filter cloth, 205. Top box cover, 206. Top cover grid, 207. Filter cotton box b, 3. Folded filter cotton. Detailed Implementation

[0031] This three-claw screw-on high-efficiency low-resistance dust and toxic substance filter element consists of a bottom box assembly 1 and a top box assembly 2. The bottom box assembly 1 comprises a bottom box 101, a bottom box filter cloth 102, a filter material body a103, a bottom box cover filter cloth 104, a bottom box cover 105, and a filter cotton box a107. The bottom box 101 contains, from the inside out, the bottom box filter cloth 102, the filter material body a103, the bottom box cover filter cloth 104, and the bottom box cover 105. The filter cotton box a107 is mounted on the bottom outer surface of the bottom box 101. The top box assembly 2 consists of a top box 201, a top box filter cloth 202, a filter material body b203, a top box cover filter cloth 204, a top box cover 205, and a filter cotton box b207. The top box 201 contains, from the inside out, the top box filter cloth 202, the filter material body b203, the top box cover filter cloth 204, and the top box cover 205. The filter cotton box b207 is mounted on the top outer surface of the top box 201. The top box assembly 2 is fastened to the top of the bottom box assembly 1 and fixed by ultrasonic welding.

[0032] The filter cotton boxes a107 and b207 are respectively filled with folded filter cotton 3, and the edges of the folded filter cotton 3 are sealed with the edges of the filter cotton boxes by sealant.

[0033] The filter cotton box a107 is pressed onto the grid of the bottom box 101, and the filter cotton box b207 is pressed onto the grid of the top box 201. They are then ultrasonically fixed to the bottom box assembly 1 and the top box assembly 2, respectively, mainly to protect against dust, smoke and other particulate matter.

[0034] The bottom cover 105 has a flange on its edge, and the top cover 205 has a groove on its edge that corresponds to the flange on the bottom cover 105, so that the two fit together without misalignment. The top cover assembly 2 is fastened together with the flange on the bottom cover 105 of the bottom cover assembly 1 by the groove on the edge of the top cover 205, and is fixed by ultrasonic welding (see Appendix). Figure 1 , 5 9). A bottom cover grille 106 is formed on the bottom cover 105, and a top cover grille 206 is formed on the top cover 205. Both the bottom cover grille 106 and the top cover grille 206 are arranged towards the interface 107. This arrangement allows the cavity to guide the airflow along the grille direction into the interface channel of the filter element filter device, and then through the interface of the filter element into the mask body (see Appendix). Figure 5 , 6 , 7, 9).

[0035] Furthermore, the bottom box filter cloth 102 is ultrasonically welded or bonded to the bottom of the bottom box 101 cavity, and the bottom box cover filter cloth 104 is ultrasonically welded or bonded to the bottom box cover 105; the top box filter cloth 202 is ultrasonically welded or bonded to the bottom of the top box 201 cavity, and the top box cover filter cloth 204 is ultrasonically welded or bonded to the top box cover 205. The filter cloth is a well-ventilated filter cotton material, primarily preventing fine filter media from leaking through the ventilation grille.

[0036] Further, the filter media a103 is placed on the bottom box filter cloth 102 inside the bottom box 101 cavity. The bottom box cover 105 is placed on the bottom box 101 to press the filter media a103, and then fixed by ultrasonic welding, so that the bottom box cover 105 and the bottom box 101 form a sealed integral part, completing the assembly of the bottom box assembly 1. The filter media b203 is placed on the top box filter cloth 202 inside the top box 201 cavity. The top box cover 205 is placed on the top box 201 to press the filter media b203, and then fixed by ultrasonic welding, so that the top box cover 205 and the top box 201 form a sealed integral part, completing the assembly of the top box assembly 2.

[0037] The filter media a103 and b203 are made of activated carbon.

[0038] This three-claw screw-on high-efficiency, low-resistance dust and toxic substance filter element solves the problem of ordinary filter boxes having only a cover plate grille for air intake, resulting in a small air intake area and high suction resistance. Increasing the air intake area requires increasing the filter box's air intake area and volume, leading to user discomfort. Furthermore, it doubles the air intake area while halving the suction resistance, resulting in smoother air intake, all while maintaining the same filter element size. In addition, the filter media in the bottom and top boxes of this filter element assembly has the same weight and volume, ensuring almost equal consumption of filter media in both boxes. This prevents the filter from failing due to less media on one side, causing the filter layer to thin and be penetrated by harmful substances first.

[0039] The above description is merely a preferred embodiment of the present utility model. The above examples do not limit the substantive content of the present utility model in any way. Any simple modifications or variations made by those skilled in the art to the above specific embodiments based on the technical essence of the present utility model after reading this specification, as well as equivalent embodiments that may be changed or modified using the disclosed technical content, shall still fall within the scope of the technical solution of the present utility model and shall not depart from the essence and scope of the present utility model.

Claims

1. A three-claw screw-on high-efficiency low-resistance dust and toxicity filter element, comprising a bottom box assembly (1) and a top box assembly (2), characterized in that: The bottom box assembly (1) consists of a bottom box (101), a bottom box filter cloth (102), a filter material body a (103), a bottom box cover filter cloth (104), a bottom box cover (105), and a filter cotton box a (107). The bottom box (101) contains, from the inside out, the bottom box filter cloth (102), the filter material body a (103), the bottom box cover filter cloth (104), and the bottom box cover (105). The bottom outer surface of the bottom box (101) is fitted with the filter cotton box a (107). The top box assembly (2) consists of a top box (201) The top box (201) is composed of a top box filter cloth (202), a filter material body b (203), a top box cover filter cloth (204), a top box cover (205), and a filter cotton box b (207). The top box (201) is equipped with the top box filter cloth (202), the filter material body b (203), the top box cover filter cloth (204), and the top box cover (205) in sequence from the inside to the outside. The top outer surface of the top box (201) is equipped with a filter cotton box b (207). The top box assembly (2) is fastened to the top of the bottom box assembly (1) and fixed by ultrasonic welding.

2. The three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The filter cotton box a (107) and filter cotton box b (207) are respectively filled with folded filter cotton (3), and the edges of the folded filter cotton (3) are sealed with the edges of the filter cotton box by sealant.

3. The three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The filter cotton box a (107) is pressed onto the grid of the bottom box (101), and the filter cotton box b (207) is pressed onto the grid of the top box (201).

4. The three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The bottom box filter cloth (102) is ultrasonically welded or bonded to the bottom of the bottom box (101) cavity, and the bottom box cover filter cloth (104) is ultrasonically welded or bonded to the bottom box cover (105); the top box filter cloth (202) is ultrasonically welded or bonded to the bottom of the top box (201) cavity, and the top box cover filter cloth (204) is ultrasonically welded or bonded to the top box cover (205).

5. The three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The filter media a (103) is placed on the bottom box filter cloth (102) inside the bottom box (101) cavity. The bottom box cover (105) is placed on the bottom box (101) to press the filter media a (103) and then fixed by ultrasonic welding.

6. The three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The filter material b (203) is placed on the top box filter cloth (202) inside the top box (201) cavity. The top box cover (205) is placed on the top box (201) to press the filter material b (203) and then fixed by ultrasonic welding.

7. The three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The filter media a (103) and filter media b (203) are made of activated carbon.

8. The three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The bottom cover (105) has a bottom cover grille (106), and the top cover (205) has a top cover grille (206). Both the bottom cover grille (106) and the top cover grille (206) are arranged toward the interface (107).

9. A three-claw screw-on high-efficiency low-resistance dust and toxicity filter element according to claim 1, characterized in that: The bottom cover (105) has a flange on its edge, and the top cover (205) has a groove on its edge that corresponds to the flange on the edge of the bottom cover (105).

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