A high efficiency filter

Abstract

The utility model discloses a kind of high-efficiency filters, belong to separation filtering technical field, it includes upper filter shell and lower filter shell;Upper filter shell includes top wall, and the bottom surface of top wall is coaxially provided with several upper cylinder shell;Lower filter shell includes bottom wall, and the top surface of bottom wall is coaxially provided with several lower cylinder shell;Upper filter shell and lower filter shell are docked after along up-down direction each upper cylinder shell and lower cylinder shell are alternately nested.The high-efficiency filter provided by the utility model prolongs the flow path of fluid in the filter of limited volume, makes fluid and filtering material fully contact, improves filtering efficiency;Upper filter shell and lower filter shell can be respectively integrally formed and processed, and assembly is convenient.

Description

Technical Field

[0001] This utility model relates to a high-efficiency filter and belongs to the field of filtration and separation technology. Background Technology

[0002] Filters remove harmful components from fluids through physical interception and chemical adsorption of filter materials, achieving effects such as odor control and fluid purification. For example, in industrial manufacturing, filters are typically installed at the end of waste liquid collection systems to adsorb organic matter, pigments, odors, and some heavy metals from waste liquids. In laboratories and research institutions, filters are often integrated into waste liquid collection tanks, filtering and absorbing harmful gases emitted from the tanks in real time. Filters are also commonly installed in exhaust gas pipelines to adsorb formaldehyde, VOCs, and odorous substances. Currently, the contact area and contact time between the fluid and the filter material within the filter affect the filtration effect. Some filters currently employ complex filtration channels to prolong the fluid's flow time within the filter, increasing manufacturing complexity and reducing sealing performance. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a high-efficiency filter with a compact structure, small size, and high space utilization.

[0004] This utility model achieves the above objectives by adopting the following technical solutions:

[0005] A high-efficiency filter is provided with a fluid inlet and a fluid outlet, and the high-efficiency filter includes an upper filter housing and a lower filter housing;

[0006] The upper filter shell includes a top wall, and a plurality of upper cylindrical shells are coaxially arranged on the bottom surface of the top wall; the lower filter shell includes a bottom wall, and a plurality of lower cylindrical shells are coaxially arranged on the top surface of the bottom wall, with the upper and lower cylindrical shells arranged axially in the vertical direction.

[0007] After the upper and lower filter shells are connected in the vertical direction, the upper and lower shells are nested alternately, dividing the high-efficiency filter into nested annular filter cavities. A lower partition area is provided between the bottom end of the upper shell and the bottom wall, and an upper partition area is provided between the top end of the lower shell and the top wall. Adjacent annular filter cavities are connected to each other at the upper and lower partition areas.

[0008] The fluid inlet and fluid outlet are respectively connected to the innermost annular filter chamber and the outermost annular filter chamber.

[0009] Optionally, an interface pipe is connected to the fluid inlet.

[0010] Optionally, the diameter of the innermost lower shell is smaller than the diameter of the innermost upper shell, and the fluid inlet is located on the bottom wall and communicates with the innermost lower shell.

[0011] Optionally, the fluid outlet is located in the upper or lower filter housing.

[0012] Preferably, an annular edge is provided between the circumferential sidewalls of the outermost upper shell and the outermost lower shell, and the fluid outlet is located on the annular edge.

[0013] Optionally, the diameter of the outermost upper shell is larger than the diameter of the outermost lower shell, and the annular edge is integrally formed on the inner circumferential surface of the outermost upper shell, or the annular edge is integrally formed on the outer circumferential surface of the outermost lower shell.

[0014] Typically, the outermost upper shell and the outermost lower shell are connected by interference fit, threaded connection or snap-fit.

[0015] Furthermore, the lower filter housing has an equal diameter structure at both the top and bottom, or the lower part of the lower filter housing has a conical structure with a diameter decreasing downwards.

[0016] The annular filter chamber is filled with filter material, and the fluid inlet and fluid outlet are covered with filter cotton.

[0017] Preferably, the bottom end of the inner upper shell is provided with a pointed structure or a toothed structure.

[0018] The beneficial effects of this utility model include, but are not limited to:

[0019] The high-efficiency filter provided by this utility model consists of multiple horizontally nested annular filter chambers forming a filter channel. The fluid flow path is designed as a zigzag S-shape, extending the fluid flow path within the limited volume of the filter, ensuring sufficient contact between the fluid and the filter material, and improving filtration efficiency. The filter has a compact structure, small size, and high space utilization. The upper and lower filter shells can be integrally molded, facilitating assembly. Furthermore, the upper shell is integrally connected to the top wall, and the lower shell to the bottom wall, resulting in excellent sealing performance. When the fluid outlet is positioned downwards and covered by the upper filter shell, rainwater can be prevented from seeping in from the fluid outlet. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of the high-efficiency filter provided in Example 1;

[0022] Figure 2 This is a schematic diagram of the upper filter housing in the high-efficiency filter provided in Example 2;

[0023] Figure 3 This is a schematic diagram of the structure of the lower filter housing in the high-efficiency filter provided in Example 2;

[0024] Figure 4 This is a schematic diagram of the structure of the high-efficiency filter provided in Example 2 after it is filled with filter material;

[0025] Figure 5 A schematic diagram of the structure of the high-efficiency filter provided in Example 3;

[0026] In the diagram, 110 is the fluid inlet; 120 is the fluid outlet; 130 is the interface pipe; 210 is the upper filter shell; 211 is the top wall; 212 is the upper cylindrical shell; 213 is the pointed structure; 220 is the lower filter shell; 221 is the bottom wall; 222 is the lower cylindrical shell; 223 is the conical structure; 231 is the lower compartment; 232 is the upper compartment; 300 is the annular filter chamber; 400 is the annular edge; and 500 is the filter cotton. Detailed Implementation

[0027] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0028] It should be noted that many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figures 1-5 As shown, the high-efficiency filter provided by this utility model is provided with a fluid inlet 110 and a fluid outlet 120. The filter is provided with filter material. Fluid enters the filter through the fluid inlet 110. During the process of passing through the filter, the adsorbent carried in the fluid is intercepted by the filter material, so that the fluid is purified and finally discharged from the fluid outlet 120.

[0030] Specifically, the filter is assembled from an upper filter housing 210 and a lower filter housing 220. The upper filter housing 210 includes a top wall 211, and a plurality of upper cylindrical shells 212 with increasing diameters are coaxially arranged on the bottom surface of the top wall 211; the lower filter housing 220 includes a bottom wall 221, and a plurality of lower cylindrical shells 222 with increasing diameters are coaxially arranged on the top surface of the bottom wall 221, with the upper cylindrical shells 212 and the lower cylindrical shells 222 arranged axially in the vertical direction.

[0031] After the upper filter shell 210 and the lower filter shell 220 are connected in the vertical direction, the upper shell 212 and the lower shell 222 are nested alternately, dividing the filter into nested annular filter chambers 300. A lower partition area 231 is provided between the bottom end of the upper shell 212 and the bottom wall 221, and an upper partition area 232 is provided between the top end of the lower shell 222 and the top wall 211. Adjacent annular filter chambers are interconnected at the upper partition area 232 and the lower partition area 231, so that an S-shaped airflow channel with a zigzag forward movement is formed inside the filter.

[0032] To facilitate connection between the filter and the exhaust port, an interface pipe 130 is connected to the fluid inlet 110. The interface pipe 130 is typically provided with external threads for easy connection to a container.

[0033] Furthermore, the outermost upper cylindrical shell 212 and the outermost lower cylindrical shell 222 are connected by interference fit, threaded connection or snap-fit.

[0034] The annular filter chamber 300 is filled with filter material, which can be a variety of adsorption materials such as microporous filter element, activated carbon, nano mineral crystals, diatomaceous earth, molecular sieve and micron-level filter membrane, to improve the comprehensive treatment capacity of various toxic and harmful gases.

[0035] During assembly, filter material is first filled into the lower filter housing 220, and then the upper filter housing 210 is inserted into the lower filter housing 220. To prevent the filter material from leaking out of the fluid inlet 110 or the fluid outlet 120, and to reduce the impact of the fluid on the filter material, it is preferable to cover the fluid inlet 110 and the fluid outlet 120 with filter cotton 500.

[0036] In order to facilitate the insertion of the upper filter shell 210 into the lower filter shell 220, it is preferable to set the bottom end of the inner upper cylinder shell as a pointed structure 213 or a toothed structure. The attached drawings of this utility model use a pointed structure as an example for illustration.

[0037] The lower filter housing can have a structure with equal upper and lower diameters, or the lower part of the lower filter housing can have a tapered structure 223 with the diameter decreasing downwards. When a tapered structure is used, the diameter of the lower part of the filter can be reduced, avoiding interference with surrounding components. In addition, the cross-sectional shape of each structure of the high-efficiency filter provided by this utility model is not limited to a circle, and can be processed into other polygonal structures as needed.

[0038] Figure 1The direction of the middle arrow indicates the airflow direction. When the high-efficiency filter provided by this utility model is installed on a waste liquid tank, the gas emitted from the liquid in the waste liquid tank flows upward into the innermost lower shell 222. The gas continues to flow upward within the lower shell 222 until it reaches the top wall 211, where it changes direction and flows downward into the next annular filter chamber. Within this annular filter chamber, the gas flows downward to the bottom wall 221, where it changes direction and enters the next annular filter chamber. This back-and-forth flow of the gas within the filter extends the gas flow path, ensuring sufficient contact between the gas and the filter material, improving filtration efficiency, and effectively capturing and adsorbing volatile harmful gases such as acidic, alkaline, and organic solvents. This improves the laboratory environment and also reduces the pressure inside the waste liquid tank, effectively controlling the risk of explosion.

[0039] The structure of the high-efficiency filter provided by this utility model will be described in detail below through specific embodiments.

[0040] Example 1:

[0041] refer to Figure 1 In this embodiment, the lower filter shell 220 is provided with two lower cylindrical shells 222 of different diameters, and the outermost lower cylindrical shell forms the outer wall of the lower filter shell 220. The upper filter shell 210 is provided with two upper cylindrical shells 212 of different diameters, and the outer upper cylindrical shell has a smaller axial extension length, forming a cap-like structure that is fastened to the outside of the lower cylindrical shell 222.

[0042] The diameter of the innermost lower shell is smaller than that of the innermost upper shell, so that the innermost lower shell is located in the center of the filter. The fluid inlet 110 is opened on the bottom wall 221 and communicates with the innermost lower shell.

[0043] The fluid outlet 120 is located on the top wall 211 of the upper filter shell 210 and communicates with the outermost annular filter chamber. The fluid outlet 120 is composed of multiple circumferentially distributed through holes, and the gas in the outermost annular filter chamber flows upward and flows out from the fluid outlet 120.

[0044] Furthermore, an internal thread can be provided on the inner wall of the outermost upper cylinder shell 212, and an external thread can be provided on the outer wall of the outermost lower cylinder shell 222, so that the upper filter shell 210 and the lower filter shell 220 are connected by threads.

[0045] Furthermore, the diameter of the outermost upper shell is larger than that of the outermost lower shell, which allows the outermost upper shell to be fastened to the outside of the outermost lower shell, preventing rainwater from seeping in from the connection between the upper and lower filter shells when used outdoors.

[0046] Example 2:

[0047] refer to Figures 2-4The difference between this embodiment and Embodiment 1 is that the airflow direction from the fluid outlet 120 is downward. Therefore, the fluid outlet is specifically configured as follows: an annular edge 400 is provided between the circumferential sidewalls of the outermost upper shell 212 and the outermost lower shell 222, and the fluid outlet 120 is located on the annular edge 400. Compared to Embodiment 1, in this embodiment, the fluid outlet is covered by the upper filter shell, allowing the gas in the outermost annular filter chamber to flow downward through the fluid outlet, preventing rainwater from entering the fluid outlet 120.

[0048] In actual processing, the annular edge 400 can be integrally formed on the inner circumferential surface of the outermost upper cylindrical shell 212, or integrally formed on the outer circumferential surface of the outermost lower cylindrical shell 222. For example, when the annular edge 400 is integrally formed on the outer circumferential surface of the outermost lower cylindrical shell 222, an external thread is provided on the outer wall of the annular edge 400 to be threadedly connected to the outermost upper cylindrical shell 212.

[0049] Example 3:

[0050] refer to Figure 5 In this embodiment, there are three upper shells and three lower shells, which further increases the number of annular filter chambers.

[0051] It should be noted that the above usage process is illustrated using gas filtration as an example. In fact, the filter provided by this utility model can also be applied to liquid filtration.

[0052] Understandably, the fluid outlet in this invention can be located in the upper or lower filter housing, specifically on the top wall or the circumferential wall of the upper or lower cylinder. In practical applications, the outlet location can be selected based on the filter's installation position and the need to avoid obstructions or prevent rainwater from entering.

[0053] The upper filter housing 210 and the lower filter housing 220 can be integrally molded, making assembly convenient and filter material easy to replace; moreover, the upper cylinder 212 is integrally connected with the top wall 211, and the lower cylinder 222 is integrally connected with the bottom wall 221, resulting in good sealing performance of the filter.

[0054] Furthermore, the above usage process is illustrated using the assembly method with the upper filter housing 210 on top and the lower filter housing 220 on the bottom as an example. In reality, the filter can also be installed in other orientations, such as inverted installation or horizontal installation as shown in the figure.

[0055] In special cases, the fluid inlet can be connected to the outermost annular filter chamber 300, and the fluid outlet 120 can be connected to the innermost annular filter chamber 300.

[0056] It should be noted that the orientation limitations such as coaxial setting and setting along the vertical direction in this application are only one specific method provided by this application. When the positions of the upper cylinder shell 212 and the lower cylinder shell 222 deviate from the coaxial setting within a certain range, or when the upper cylinder shell 212 and the lower cylinder shell 222 deviate from the vertical direction within a certain range, they should fall within the protection scope of this utility model.

[0057] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A high efficiency filter having a fluid inlet and a fluid outlet provided thereon, characterized in that, The high-efficiency filter includes an upper filter housing and a lower filter housing; The upper filter shell includes a top wall, and a plurality of upper cylindrical shells are coaxially arranged on the bottom surface of the top wall; the lower filter shell includes a bottom wall, and a plurality of lower cylindrical shells are coaxially arranged on the top surface of the bottom wall, with the upper and lower cylindrical shells arranged axially in the vertical direction. After the upper and lower filter shells are connected in the vertical direction, the upper and lower shells are nested alternately, dividing the high-efficiency filter into nested annular filter cavities. A lower partition area is provided between the bottom end of the upper shell and the bottom wall, and an upper partition area is provided between the top end of the lower shell and the top wall. Adjacent annular filter cavities are connected to each other at the upper and lower partition areas. The fluid inlet and fluid outlet are respectively connected to the innermost annular filter chamber and the outermost annular filter chamber.

2. The high efficiency filter of claim 1, wherein, An interface pipe is connected to the fluid inlet.

3. The high efficiency filter of claim 1, wherein, The diameter of the innermost lower shell is smaller than the diameter of the innermost upper shell, and the fluid inlet is located on the bottom wall and communicates with the innermost lower shell.

4. The high efficiency filter of claim 1, wherein, The fluid outlet is located in the upper or lower filter housing.

5. The high efficiency filter of claim 1, wherein, An annular edge is provided between the circumferential sidewalls of the outermost upper shell and the outermost lower shell, and the fluid outlet is located on the annular edge.

6. The high efficiency filter of claim 5, wherein, The diameter of the outermost upper shell is larger than the diameter of the outermost lower shell. The annular edge is integrally formed on the inner circumferential surface of the outermost upper shell, or the annular edge is integrally formed on the outer circumferential surface of the outermost lower shell.

7. The high efficiency filter of claim 1, wherein, The outermost upper shell and the outermost lower shell are connected by interference fit, threaded connection or snap-fit.

8. The high efficiency filter of claim 1, wherein, The lower filter housing has a structure with equal upper and lower diameters, or the lower part of the lower filter housing has a conical structure with a diameter decreasing downwards.

9. The high efficiency filter of claim 1, wherein, The annular filter chamber is filled with filter material, and the fluid inlet and fluid outlet are covered with filter cotton.

10. The high-efficiency filter according to claim 1, characterized in that, The bottom of the inner upper shell is designed with a pointed or toothed structure.

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