Improved smoke filtering layer

Abstract

The utility model provides an improved smoke filtering layer which comprises a paper core arranged on the upper side of an outer can bottom, the outer side of the paper core is connected with the outer can bottom through sealant, the outer can bottom and the paper core are arranged in a right opposite mode, the lower side of the paper core and the outer can bottom are connected to form an air inlet cavity, and an air inlet is formed in the middle of the outer can bottom. External air sequentially passes through the air inlet chamber and the paper core to be filtered. The filter is compact in structure and ingenious in design, can reduce the manufacturing cost on the premise of improving the overall filtering effect, and has good economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of protective tool technology, and in particular to an improved smoke filter layer. Background Technology

[0002] Currently, most smoke filter layers on the market consist of an inner canopy bottom, an outer canopy bottom, baffles, a paper core, and sealant. The inner and outer canopies weigh roughly the same, accounting for about 2 / 5 of the total weight of the filter layer's metal casing. Due to the limited space and weight of the outer canopy bottom, the overall height of the paper core is restricted. Since the height of the paper core is directly related to filtration efficiency, this results in less than ideal filtration performance, higher resistance in the filter layer, and consequently, reduced user comfort. To improve overall filtration efficiency, existing smoke filter layers need to be improved. Utility Model Content

[0003] This invention provides an improved smoke filter layer that solves the problems of relatively complex internal structure, high manufacturing cost, and relatively heavy overall weight.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an improved smoke filter layer, including a paper core disposed on the upper side of the bottom of the outer can, the outer side of the paper core being connected to the bottom of the outer can by a sealant, the bottom of the outer can and the paper core being disposed opposite each other, the lower side of the paper core being connected to the bottom of the outer can to form an air inlet chamber, and an air inlet being disposed in the middle of the bottom of the outer can, and external gas passing through the air inlet chamber and the paper core in sequence to complete filtration.

[0005] In a preferred embodiment, the bottom of the paper core is detachably supported by a partition, with the two sides of the partition abutting against the bottom of the outer can and the paper core, respectively.

[0006] In the preferred embodiment, the filling height of the sealant is not less than the thickness of the paper core.

[0007] In the preferred embodiment, the lower part of the paper core spans the top of the air inlet chamber, and the bottom of the outer can gradually increases in size along the direction that is farther away from the air inlet.

[0008] In the preferred embodiment, the lower part of the partition is fixed to the bottom of the outer tank with sealant.

[0009] In the preferred embodiment, multiple ventilation holes are evenly distributed throughout the partition.

[0010] In the preferred embodiment, the size of the minimum envelope between the outermost vents is smaller than the outer diameter of the paper core.

[0011] The beneficial effects of this utility model are as follows: Through optimized design, the structure of the inner canister bottom required by the traditional smoke filter layer is reduced, thereby providing more installation space for the paper core. The thicker paper core improves the overall smoke filtration efficiency, thus ensuring the filtration effect. At the same time, in addition to reducing the production cost of the inner canister bottom component, the cost of processing the inner and outer canister bottoms together is also reduced, greatly reducing the production cost. Furthermore, since the inner canister bottom has a certain weight, reducing the weight of the smoke filter layer by reducing the inner canister bottom improves the comfort of use. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a schematic diagram of the internal structure of the smoke filter layer of this utility model;

[0014] Figure 2 This is a top view schematic diagram of the smoke filter layer structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of a traditional smoke filter layer during use;

[0016] Figure 4 This is a schematic diagram of the internal structure of this utility model during its manufacture.

[0017] In the diagram: 1. Intake chamber; 2. Outer shell; 3. Inner tank bottom; 4. Sealant; 5. Baffle plate; 6. Outer tank bottom; 7. Paper core; 8. Outer ring; 9. Cover plate; 10. Auxiliary ring; 11. Diverter plate; 12. Top rod. Detailed Implementation

[0018] like Figure 1-3 In this invention, an improved smoke filter layer includes a paper core 7 disposed on the upper side of the outer can bottom 6. The outer side of the paper core 7 is connected to the outer can bottom 6 by a sealant 4. The outer can bottom 6 and the paper core 7 are positioned opposite each other. The lower side of the paper core 7 is connected to the outer can bottom 6 to form an air inlet chamber 1. An air inlet is provided in the middle of the outer can bottom 6. External gas passes through the air inlet chamber 1 and the paper core 7 in sequence to complete the filtration.

[0019] like Figure 3In traditional smoke filters, the inner canister bottom 3 is installed at the bottom, which is then attached to the outer shell 2 via the outer canister bottom 6. Since the weight of the inner and outer canister bottoms is roughly the same, accounting for about 2 / 5 of the total weight of the metal shell of the smoke filter, the overall weight is relatively large. Furthermore, the inner canister bottom 3 occupies space, limiting the size of the paper core 7 given the fixed dimensions of the outer shell 2 and outer canister bottom 6. This restricts the overall filtration efficiency and contributes to the overall weight. The smoke filter in this design eliminates the need for the inner canister bottom 3 during manufacturing, reducing overall weight and component costs. It also reduces the manufacturing steps for installing the inner and outer canister bottoms 3 and 6. When used with a filter canister, it offers better user comfort. The sealant 4 provides circumferential support for the paper core 7, eliminating the need for other supports. This results in fewer installation components and a better seal when used with the outer canister bottom 6, ensuring that external gas entering through the inlet is filtered by the paper core 7, thus guaranteeing sufficient smoke filtration.

[0020] like Figure 4 In the preferred embodiment, the bottom of the paper core 7 is detachably supported by a partition 5, with the two sides of the partition 5 abutting against the bottom 6 of the outer can and the paper core 7, respectively. The periphery of the partition 5 is sealed with sealant 4, ensuring that external gas can pass through the partition 5 and come into contact with the paper core 7 until it is completely filtered by the paper core 7.

[0021] The partition 5 can protect the paper core 7. If the bottom of the outer can 6 is changed to a porous planar structure or other structure that can protect the paper core from damage during use, the partition 5 can be removed, thus ensuring the overall structural strength and the stability of use. The filter layer with the above structure can filter dust and various aerosols, and has a wide range of applications and strong adaptability.

[0022] like Figure 4 In the process of manufacturing the filter layer, the outer can bottom 6 is installed to the bottom of the outer ring 8, and then an auxiliary ring 10 is installed inside the outer ring 8. The partition 5 and paper core 7 are then placed inside the outer ring 8 in sequence. The auxiliary ring 10 is made of a flexible material with a relatively thin thickness, allowing it to be bent into a circle while maintaining a certain strength. Supported by the circular inner cavity structure of the outer ring 8, the auxiliary ring 10 maintains a good roundness. The outer side of the auxiliary ring 10 fits snugly against the inner wall of the outer ring 8, ensuring that the length of the auxiliary ring 10 forming a circle is approximately 1mm smaller than the inner circumference of the outer ring 8, facilitating its formation into a perfect circle. Then, a cover plate 9 is installed on top of the outer ring 8, and a flow divider 11 is fixed to the cover plate 9 by a top rod 12. When applying sealant 4, the sealant 4 is applied through the flow divider 11 to fill the gaps between the inner side of the auxiliary ring 10 and the outermost part of the paper core 7, completing the overall sealant application process. The filter layer is then removed after the sealant 4 has cured.

[0023] When a baffle 5 needs to be installed in the air inlet chamber 1 on the bottom of the outer tank 6, the height of the sealant 4 covers the overall height of the baffle 5 and the paper core 7, ensuring that (the height of the paper core 7 + 2mm) ≤ the width of the long strip before the auxiliary ring 10 is bent into a circle ≤ H (the height from the upper surface of the bottom of the outer tank 6 to the lower surface of the cover plate 9). At the same time, the paper core 7 is made of long strip filter material and is folded, which is convenient to manufacture and has a lower cost. Similarly, when there is no baffle 5, the height still needs to be set according to the above.

[0024] In the preferred embodiment, the filling height of the sealant 4 is not less than the thickness of the paper core 7. While providing support and protection, the sealant 4 also ensures a tight seal between the outer canister bottom 6 and the paper core 7, thereby ensuring that external gases can pass well through the paper core 7 for filtration, and that the smoke layer can be fully absorbed by the paper core 7, thus facilitating more complete filtration by the downstream filter canister.

[0025] In the preferred embodiment, the lower part of the paper core 7 spans the top of the air inlet chamber 1, and the opening of the outer can bottom 6 gradually widens as it moves further away from the air inlet. The outer can bottom 6 has an inverted flared structure, ensuring that the air inlet chamber 1 has a large space. After the gas enters the air inlet chamber 1, it is buffered, which is beneficial to the stability of the gas flow rate in the later stage and ensures the comfort during use. At the same time, the bottom of the paper core 7 and the top of the outer can bottom 6 are fully fitted and fixed, resulting in good overall performance.

[0026] In the preferred embodiment, the lower part of the partition 5 is fixed to the bottom of the outer tank 6 using sealant 4. Applying sealant 4 ensures accurate initial installation of the partition 5 and prevents it from slipping or misaligning during the subsequent placement of other components.

[0027] like Figure 4 In the preferred embodiment, multiple vent holes are evenly distributed throughout the partition 5. These vent holes work together to ensure good airflow when external gas enters the air intake chamber 1, providing a sufficiently stable airflow for the subsequent smoke filtration process, thereby ensuring user comfort.

[0028] In the preferred embodiment, the size of the minimum envelope between the outermost vents is smaller than the outer diameter of the paper core 7. This arrangement ensures that the partition 5 can be stably supported at the bottom of the paper core 7, resulting in better load-bearing capacity and guaranteed filtration effect.

[0029] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An improved smoke filter layer, characterized in that: It includes a paper core (7) set on the upper side of the bottom (6) of the outer can. The outer side of the paper core (7) is connected to the bottom (6) of the outer can by sealant (4). The bottom (6) of the outer can and the paper core (7) are set facing each other. The lower side of the paper core (7) is connected to the bottom (6) of the outer can to form an air inlet chamber (1). An air inlet is provided in the middle of the bottom (6) of the outer can. External gas passes through the air inlet chamber (1) and the paper core (7) in sequence to complete the filtration.

2. The improved smoke filter layer according to claim 1, characterized in that: The bottom of the paper core (7) is detachably supported by a partition (5), and the two sides of the partition (5) abut against the bottom of the outer can (6) and the paper core (7) respectively.

3. The improved smoke filter layer according to claim 1, characterized in that: The filling height of the sealant (4) shall not be less than the thickness of the paper core (7).

4. The improved smoke filter layer according to claim 1, characterized in that: The lower part of the paper core (7) spans the top of the air inlet chamber (1), and the bottom of the outer can (6) gradually increases in size along the direction that is farther away from the air inlet.

5. The improved smoke filter layer according to claim 2, characterized in that: The lower part of the partition (5) is fixed to the bottom of the outer tank (6) by sealant (4).

6. The improved smoke filter layer according to claim 2, characterized in that: Multiple ventilation holes are evenly arranged throughout the partition (5).

7. An improved smoke filter layer according to claim 6, characterized in that: The size of the smallest envelope between the outermost vents is smaller than the outer diameter of the paper core (7).

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