A multi-layer precision filter screen support for tobacco tar filtration

Abstract

The utility model relates to electronic cigarette smoking set accessory technical field, concretely relates to a multilayer precision filter screen support for tobacco tar filtering, the utility model provides a multilayer precision filter screen support for tobacco tar filtering, including the support main part of cylindrical, its top is equipped with the oil inlet, and the bottom is equipped with the oil outlet, the inside of support main part is successively coaxially provided with three layers filter screen units along the direction of tobacco tar flow, the mesh count of filter screen unit gradually increases along the direction of oil inlet to oil outlet, forms gradient filtering channel, the edge of filter screen unit is fixed with the inner wall of support main body through the fusion of flange and is fused, through 80-120 mesh (coarse filter) 150-200 mesh (medium efficiency) 300-500 mesh (fine filter) three -level gradient mesh count design, can intercept big, medium, small particle size impurities gradually, avoid the problem that single -layer filter screen is blocked fast because of impurity accumulation, significantly improves the impurity separation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic cigarette accessory technology, specifically to a multi-layer precision filter holder for e-liquid filtration. Background Technology

[0002] The e-liquid filter is one of the core functional components of e-cigarette devices. Its main function is to remove solid particulate impurities, gum residues, and metal ions from the e-liquid through physical interception, thereby ensuring the consistency of the atomizer's atomization effect and the purity of the vaping taste.

[0003] Traditional e-liquid filtration devices mostly use a single-layer filter structure with a fixed mesh size, which can only intercept impurities within a single particle size range. This results in low filtration efficiency and rapid clogging due to impurity accumulation. In addition, the structural design of traditional devices does not fully consider fluid dynamics. When e-liquid flows at high speed, it can easily cause impact wear on the filter. At the same time, it lacks backflow prevention function, which can easily lead to mixed contamination of filtered and unfiltered e-liquid. More importantly, traditional devices are mostly designed for reuse. After long-term use, the filter performance deteriorates significantly, which cannot meet the strict requirements for hygiene and stability of disposable e-cigarettes. Utility Model Content

[0004] The purpose of this invention is to provide a multi-layer precision filter holder for e-liquid filtration. Through a gradient filtration structure, optimized fluid dynamics design, and disposable adaptability structure, it solves the problems of easy clogging, low filtration efficiency, unstable structure, and inability to adapt to disposable use scenarios of traditional single-layer filters.

[0005] The technical solution provided by this utility model is a multi-layer precision filter holder for e-liquid filtration, including a cylindrical holder body with an oil inlet at the top and an oil outlet at the bottom. Three layers of filter units are arranged coaxially along the direction of e-liquid flow inside the holder body. The mesh size of the filter units increases progressively from the oil inlet to the oil outlet, forming a gradient filtration channel. The edges of the filter units are fused to the inner wall of the holder body through welding flanges.

[0006] As a preferred technical solution of this utility model, the filter unit consists of a first-stage coarse filter, a second-stage medium-efficiency filter, and a third-stage fine filter along the direction from the oil inlet to the oil outlet. The first-stage coarse filter has a mesh size of 80-120 mesh, the second-stage medium-efficiency filter has a mesh size of 150-200 mesh, and the third-stage fine filter has a mesh size of 300-500 mesh.

[0007] As a preferred embodiment of this invention, the surface of the third-stage fine filter is covered with a nano-oleophobic layer, and the material of the nano-oleophobic layer is fluorinated silicon dioxide.

[0008] As a preferred technical solution of this utility model, the inner cavity of the support body is provided with a stepped support platform, each layer of the support platform supports the bottom of the corresponding layer of filter unit, and a sealing adhesive layer is filled between the support platform and the filter unit.

[0009] As a preferred technical solution of this utility model, the oil inlet is a conical diffusion structure, and its inner diameter gradually increases along the direction of e-liquid inflow.

[0010] As a preferred embodiment of this utility model, the oil outlet is embedded with a one-way valve to prevent the e-liquid from flowing back.

[0011] As a preferred embodiment of this utility model, the side wall of the support body has an integral viewing window, and the viewing window is located at the second-stage medium-efficiency filter and the third-stage fine filter.

[0012] As a preferred technical solution of this utility model, the material of the viewing window is a transparent oil-resistant polymer, and the surface of the viewing window is provided with an oleophobic coating.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] 1. Gradient filtration improves separation efficiency: Through a three-stage gradient mesh design of 80-120 mesh (coarse filtration) → 150-200 mesh (medium efficiency) → 300-500 mesh (fine filtration), it can intercept large, medium and small particle impurities step by step, avoiding the problem of rapid clogging of single-layer filter screens due to impurity accumulation, and significantly improving impurity separation efficiency.

[0015] 2. Optimized fluid dynamics for extended service life: The conical diffuser inlet reduces the e-liquid flow rate by increasing the inlet area, thus reducing impact and wear on the filter; the one-way valve at the outlet prevents backflow and contamination of filtered e-liquid. This dual design works together to extend the effective service life of the filter.

[0016] 3. Suitable for disposable scenarios and ensures structural stability: The filter unit is fixed by a welded flange, combined with a double sealing structure of stepped support platform and sealing adhesive layer, which can effectively prevent e-liquid leakage and filter displacement; the nano oleophobic layer (fluorinated silica) can reduce the adhesion of e-liquid on the filter surface, avoid the filtration efficiency decay caused by impurities, and ensure stable filtration performance within a single use cycle.

[0017] 4. Visual monitoring for easy maintenance: The visible window (transparent oil-resistant polymer + oleophobic coating) between the second stage and the medium-efficiency filter allows for real-time observation of the filter's clogging status, facilitating timely replacement and improving ease of use. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a multi-layer precision filter holder for filtering e-liquid.

[0019] Figure 2 This is a cross-sectional three-dimensional structural diagram of a multi-layer precision filter holder for filtering e-liquid according to the present invention.

[0020] Figure 3 This is an enlarged structural view of the welded flange at point A of the multi-layer precision filter holder for filtering e-liquid according to this utility model.

[0021] As shown in the figure:

[0022] 1. Support body; 2. Oil inlet; 3. Oil outlet; 4. Filter screen unit; 5. Welded flange; 6. First-stage coarse filter screen; 7. Second-stage medium-efficiency filter screen; 8. Third-stage fine filter screen; 9. Stepped support platform; 10. Sealing layer; 11. One-way valve plate; 12. Viewing window. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] As per the instruction manual Figure 1-3 As shown, a multi-layer precision filter holder for e-liquid filtration includes a cylindrical holder body 1 with an oil inlet 2 at the top and an oil outlet 3 at the bottom. The oil inlet 2 has a conical diffusion structure with its inner diameter gradually increasing along the e-liquid inflow direction. The oil outlet 3 has a one-way valve plate 11 embedded in it to prevent e-liquid backflow.

[0027] In this utility model, three layers of filter units 4 are coaxially arranged inside the main body 1 of the support along the direction of e-liquid flow. The mesh size of the filter units 4 increases step by step from the oil inlet 2 to the oil outlet 3 to form a gradient filtration channel. The filter units 4 are, in sequence, a first-stage coarse filter 6, a second-stage medium-efficiency filter 7, and a third-stage fine filter 8 along the direction from the oil inlet 2 to the oil outlet 3. The first-stage coarse filter 6 has a mesh size of 100, the second-stage medium-efficiency filter 7 has a mesh size of 200, and the third-stage fine filter 8 has a mesh size of 400. The surface of the third-stage fine filter 8 is covered with a nano-oleophobic layer, and the material of the nano-oleophobic layer is fluorinated silicon dioxide.

[0028] In this utility model, the side wall of the support body 1 has an integral viewing window 12, and the viewing window 12 is located between the second-stage medium-efficiency filter 7 and the third-stage fine filter 8. The material of the viewing window 12 is a transparent oil-resistant polymer, and the surface of the viewing window 12 is provided with an oleophobic coating.

[0029] In this utility model, the inner cavity of the support body 1 is provided with a stepped support platform 9. Each support platform supports the bottom of the corresponding filter unit 4, and a sealant layer 10 is filled between the support platform and the filter unit 4. The edge of the filter unit 4 is welded and fixed to the inner wall of the support body 1 by a welding flange 5.

[0030] Working principle

[0031] As e-liquid flows in from inlet 2, the conical diffusion structure gradually reduces the e-liquid flow rate from high speed to a stable flow rate, reducing impact and wear on the filter. Subsequently, the e-liquid passes through the first-stage coarse filter 6 (intercepting large particles such as tobacco debris), the second-stage medium-efficiency filter 7 (intercepting medium-sized particles such as gel particles), and the third-stage fine filter 8 (intercepting fine particles such as metal oxides). The nano-oleophobic layer on the surface of the third-stage fine filter 8 can reduce e-liquid adhesion and avoid increased filtration resistance caused by impurities sticking together.

[0032] After being supported and evenly distributed by the stepped support platform 9, the filtered e-liquid flows out from the oil outlet 3. The one-way valve 11 of the oil outlet 3 is in the open state during normal filtration. When the pressure of the oil outlet 3 rises abnormally (such as backflow), the one-way valve 11 closes to prevent unfiltered e-liquid from flowing back in.

[0033] During use, the accumulation of impurities between the second-stage medium-efficiency filter 7 and the third-stage fine filter 8 can be observed through the viewing window 12. If the filter color becomes significantly darker or the light transmittance is less than 80%, it indicates that the bracket needs to be replaced. When replacing, due to the use of fusion fixation and sealing adhesive layer 10 structure, it can be directly replaced as a whole to avoid secondary pollution and meet the needs of disposable smoking devices.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A multi-layer precision filter holder for e-liquid filtration, comprising a cylindrical holder body (1), having an oil inlet (2) at the top and an oil outlet (3) at the bottom, characterized in that: The support body (1) has three layers of filter units (4) arranged coaxially along the direction of e-liquid flow inside; The mesh size of the filter unit (4) increases gradually from the oil inlet (2) to the oil outlet (3) to form a gradient filtration channel; The edge of the filter unit (4) is fixed to the inner wall of the support body (1) by welding flange (5).

2. The multi-layer precision filter holder for e-liquid filtration according to claim 1, characterized in that: The filter unit (4) consists of a first-stage coarse filter (6), a second-stage medium-efficiency filter (7), and a third-stage fine filter (8) along the direction from the oil inlet (2) to the oil outlet (3). The first-stage coarse filter (6) has a mesh size of 80-120, the second-stage medium-efficiency filter (7) has a mesh size of 150-200, and the third-stage fine filter (8) has a mesh size of 300-500.

3. The multi-layer precision filter holder for e-liquid filtration according to claim 2, characterized in that: The surface of the third-stage fine filter (8) is covered with a nano-oleophobic layer, and the material of the nano-oleophobic layer is fluorinated silicon dioxide.

4. The multi-layer precision filter holder for e-liquid filtration according to claim 1, characterized in that: The inner cavity of the support body (1) is provided with a stepped support platform (9), each layer of the support platform supports the bottom of the corresponding filter unit (4), and a sealant layer (10) is filled between the support platform and the filter unit (4).

5. The multi-layer precision filter holder for e-liquid filtration according to claim 1, characterized in that: The oil inlet (2) is a conical diffusion structure, and its inner diameter gradually increases along the direction of e-liquid flow.

6. The multi-layer precision filter holder for e-liquid filtration according to claim 1, characterized in that: The oil outlet (3) is fitted with a one-way valve plate (11) to prevent the e-liquid from flowing back.

7. The multi-layer precision filter holder for e-liquid filtration according to claim 2, characterized in that: The support body (1) has an integral viewing window (12) on its side wall, and the viewing window (12) is located at the second-stage medium-efficiency filter (7) and the third-stage fine filter (8).

8. The multi-layer precision filter holder for e-liquid filtration according to claim 7, characterized in that: The material of the viewing window (12) is a transparent oil-resistant polymer, and the surface of the viewing window (12) is provided with an oleophobic coating.

Images