Filter with deformation resistance

Abstract

The utility model belongs to the technical field of gas filtration, and provides a filter with deformation resistance, which mainly comprises an upper end cover, a lower end cover, an upper end cover and a lower end cover, the lower end cover is arranged below the upper end cover, the central axis of the lower end cover coincides with the central axis of the upper end cover, and a preset distance is formed between the lower end cover and the upper end cover; the supporting protective net is arranged between the upper end cover and the lower end cover, one end of the supporting protective net is connected to the edge of the upper end cover, the other end of the supporting protective net is connected to the edge of the lower end cover, and the supporting protective net, the upper end cover and the lower end cover form a filtering cavity; the filter element is arranged in the filter cavity and abuts against the upper end cover and the lower end cover, and the upper end cover, the lower end cover and the supporting protective net are all made of non-metal materials. The upper end cover, the lower end cover and the supporting protective net are all made of non-metal materials, when strong acid or strong alkaline gas is filtered, components on the filter can be prevented from being rusted, and therefore the filtering quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas filtering, in particular to a filter with anti-deformation capability. Background Art

[0002] The PUSH filters used in existing isolators are non-completely non-metallic filters and completely non-metallic filters. When completely non-metallic filters encounter greater resistance during the push installation process, the filter will deform due to its own insufficient strength, causing the filter paper to be squeezed and damaged. Since it cannot be observed in the filter cartridge, it is easy to cause leakage and is difficult to be discovered, causing unnecessary losses. Utility Model Content

[0003] The utility model provides a filter with anti-deformation capability, thereby solving the problem in the prior art that non-metallic structure filters are prone to deformation when the resistance is large during the pushing and installing process, causing the filter paper to be damaged and leading to leakage.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A filter with anti-deformation capability, comprising:

[0006] An upper end cover having a feed inlet thereon;

[0007] A lower end cover is arranged below the upper end cover, the central axis of the lower end cover coincides with the central axis of the upper end cover, wherein a preset distance is provided between the lower end cover and the upper end cover;

[0008] A support protection net is arranged between the upper end cover and the lower end cover, one end of the support protection net is connected to the edge of the upper end cover, and the other end of the support protection net is connected to the edge of the lower end cover, and the support protection net, the upper end cover and the lower end cover form a filter cavity;

[0009] A filter element is disposed in the filter cavity, and the filter element is respectively abutted against the upper end cover and the lower end cover; and

[0010] A connecting rod is arranged between the upper end cover and the lower end cover, one end of the connecting rod is connected to the upper end cover, and the other end of the connecting rod is connected to the lower end cover, so that the preset distance between the upper end cover and the lower end cover remains unchanged.

[0011] In some embodiments, the upper end cover, the lower end cover, the supporting protection net and the connecting rod are all made of plastic material.

[0012] In some embodiments, a central axis of the connecting rod coincides with a central axis of the upper end cover.

[0013] In some embodiments, one end of the connecting rod passes through the feed port, and a uniformly distributed connecting bracket is provided on the non-filter cavity side of the upper end cover, and one end of the connecting rod passing through the feed port is connected to the connecting bracket.

[0014] In some embodiments, a sealing ring is provided on the upper end cover, and the sealing ring is arranged along the side of the upper end cover to form an annular closed structure.

[0015] In some embodiments, the filter element is composed of filter paper, and the filter paper has a plurality of pleated structures, wherein the folds of the filter paper are parallel to the central axis of the upper end cover.

[0016] In some embodiments, an annular limiting plate is provided on the upper end cover and / or an annular limiting plate is provided on the lower end cover, and the side of the filter element abuts against the annular limiting plate so that the filter element surrounds to form a first channel.

[0017] In some embodiments, the upper end cover, the lower end cover and the connecting rod are integrally constructed.

[0018] In some embodiments, the supporting and protective net is a flexible structure, and the supporting and protective net is an integral structure.

[0019] In some embodiments, the connection brackets are symmetrically distributed on the upper end cover, wherein the connection brackets protrude toward a side away from the filter element to form a clamping position.

[0020] Compared with the prior art, the beneficial effects brought by the utility model are:

[0021] The present application strengthens the overall structural strength of the filter by arranging the upper end cover and the lower end cover of the connecting rod into an integrated structure, thereby preventing the filter from deforming during the pushing process and causing leakage. At the same time, the upper end cover, the lower end cover, the supporting protective net and the connecting rod are all made of plastic materials to prevent the filter parts from rusting, improve its anti-corrosion ability, and extend the service life of the filter.

[0022] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a filter with anti-deformation capability according to the utility model;

[0024] Figure 2 This is a front view of a filter with anti-deformation capability according to the utility model;

[0025] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0026] Figure 4 This is a first stereoscopic view of a filter with anti-deformation capability of the utility model without a filter core and a supporting protective net;

[0027] Figure 5 This is a second stereoscopic view of a filter with anti-deformation capability of the utility model without a filter core and a supporting protection net;

[0028] Figure 6 It is a top view of a filter with anti-deformation capability of the utility model;

[0029] Figure 7 for Figure 6 Cross-sectional view at BB in the middle;

[0030] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0031] Fig. 9 for Figure 7 Enlarged view of point D in the middle. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with specific drawings. In the description of this embodiment, unless otherwise specified, the terms "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the present application must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application.

[0033] like Figure 1 As shown, a filter with anti-deformation ability provided by the utility model mainly includes an upper end cover 1, a lower end cover 3 and a supporting protective net 2. The upper end cover 1 is a disc structure, and a feed port 11 is arranged on the upper end cover 1 for the inflow or outflow of gas or liquid. The lower end cover 3 is also a disc structure and is arranged below the upper end cover 1. In this embodiment, the lower end cover is Figure 1In the downward direction of the viewing angle, the coverage area of ​​the lower end cover 3 is close to the coverage area of ​​the upper end cover 1, and the central axis of the lower end cover 3 coincides with the central axis of the upper end cover 1, so that the filter is a cylindrical barrel structure, wherein a preset spacing is set between the upper end cover 1 and the lower end cover 3 for the installation of the support protection net 2. The support protection net 2 is set between the upper end cover 1 and the lower end cover 3, one end of the support protection net 2 is fixedly connected to the edge of the upper end cover 1, and the other end of the support protection net 2 is fixedly connected to the edge of the lower end cover 3. The length of the support protection net 2 in the axial direction of the upper end cover 1 matches the preset spacing between the upper end cover 1 and the lower end cover 3. The connection between the support protection net 2 and the upper end cover 1 and the lower end cover 3 forms a filter cavity, such as Figure 3 As shown, a filter element 4 is arranged in the filter cavity, wherein one end of the filter element 4 abuts against the upper end cover 1, and the other end of the filter element 4 abuts against the lower end cover 2, as shown in FIG. Figure 8 and Fig. 9 As shown, the liquid or gas to be filtered must be filtered through the filter element 4 to avoid leakage. In this embodiment, the upper end cover 1 and the lower end cover 3 are both circular structures. Optionally, the upper end cover 1 and the lower end cover 3 can be a triangle or a rectangle or other shapes with any number of sides. The shapes of the upper end cover 1 and the lower end cover 3 can be pre-set according to actual needs, and the shape of the supporting protection net 2 matches the shape of the upper end cover 1 and the lower end cover 3. In this embodiment, the supporting protection net 2 is cylindrical. Optionally, the supporting protection net 2 can be other shapes such as a triangular prism and a quadrangular prism.

[0034] The present invention can adapt to strong acid or strong alkali environment by making the upper end cover 1, the lower end cover 3 and the support protection 2 from non-metallic materials, thereby preventing the entire filter from being corroded, increasing the service life of the filter, and thus improving the filtering quality. The non-metallic material is polytetrafluoroethylene or polypropylene.

[0035] In one embodiment, in order to avoid the squeezing of the filter element 4 by the upper end cover 1 and the lower end cover 3 during the pushing process of the filter, a connecting rod 5 is provided between the upper end cover 1 and the lower end cover 3. Specifically, one end of the connecting rod 5 is fixedly connected to the upper end cover 1, and the other end of the connecting rod 5 is connected to the lower end cover 3, so as to ensure that the preset distance between the upper end cover 1 and the lower end cover 3 remains unchanged, and the central axis of the connecting rod 5 is parallel to the central axis of the upper end cover 1 and the central axis of the lower end cover 3, so that the thrust applied during the pushing process of the filter is completely applied to the connecting rod 5. In this embodiment, the number of connecting rods 5 may be 2, 3 or 4, which are evenly distributed between the upper end cover 1 and the lower end cover 3. Furthermore, the connecting rod 5 is made of the aforementioned non-metallic material resistant to strong acids and alkalis to avoid being corroded by strong acids or alkalis.

[0036] Furthermore, in order to reduce the number of connecting rods 5 and reduce the weight of the filter, the connecting rods 5 are arranged at the geometric center of the upper end cover 1 and the lower end cover 3, wherein the central axis of the connecting rod 5 coincides with the central axis of the upper end cover 1 and the central axis of the lower end cover 3, thereby ensuring that the connecting rods 5 make the upper end cover 1 evenly stressed during the pushing process, while reducing the number of connecting rods 5, thereby simplifying the structure.

[0037] In one embodiment, one end of the connecting rod 5 passes through the feed port 11, and a connecting bracket 12 is provided on the non-filter chamber side of the upper end cover 1. One end of the connecting rod 5 passing through the feed port 11 is connected to the connecting bracket 12. Further, the connecting bracket 12 is a plurality of evenly distributed on the surface of the upper end cover 1. In this embodiment, the number of the connecting brackets 12 is 4, and the angle between two adjacent connecting brackets 12 is 90°. Further, in this embodiment, the connecting rod 5 is a structure with a cross-shaped cross section, and a hollow groove is provided on the connecting bracket 12, and the cross-shaped connecting rod is clamped in the hollow groove. On the one hand, the counterweight of the connecting bracket 12 is reduced, and on the other hand, the connecting rod 5 of the cross structure can be clamped and fixed, which ensures the strength of the connecting rod 5 while reducing the weight of the connecting rod 5. Optionally, the connecting rod 5 may be a cylindrical or prismatic structure. Further, a plurality of connecting brackets 12 protrude toward the side away from the filter element 4, and a plurality of connecting brackets 12 are connected at one point to form a clamping position 121, such as Figure 6 As shown, it is convenient for operators to clamp and replace. Further, the connecting bracket 12 and the upper end cover 1 are integrally formed, wherein a hollow structure 122 is provided inside the connecting bracket 12, which further reduces the weight of the filter while ensuring strength.

[0038] In one embodiment, in order to ensure the sealing performance of the filter, a sealing ring 13 is provided on the upper end cover 1, and the sealing ring 13 is arranged along the edge of the upper end cover 1 to form an annular closed structure. Further, the sealing ring 13 is a double-layer structure, such as Figure 8 As shown, the double-layer sealing ring 13 has a good deformation amount, so that the filter always maintains a good sealing performance during pushing or using, avoiding leakage.

[0039] In one embodiment, in order to ensure good filtering performance of the filter, the filter element 4 is made of filter paper, wherein the filter paper has a multi-layer pleated structure, so as to increase the filtering area of ​​the filter element 4 in a limited space and improve the filtering efficiency. It should be noted that the bend of the filter paper is parallel to the central axis of the upper end cover and the lower end cover, and the two ends of the filter paper are respectively abutted against the upper end cover 1 and the lower end cover 3.

[0040] Furthermore, in order to ensure the fixed installation of the filter element 4, in this embodiment, an annular limiting plate is provided on the upper end cover 1, and an annular limiting plate is provided on the lower end cover 3, and the side of the filter element 4 abuts against the annular limiting plate, and the annular limiting plate includes a first baffle 14 provided on the upper end cover 1 and a second baffle 31 provided on the lower end cover 3, and the side of the filter element 4 abuts against the first baffle 14 and the second baffle 31 respectively, and the filter element 4 forms a first channel 41 around the annular limiting plate for the inflow or outflow of gas. As another variation of this embodiment, the first baffle 14 can be provided only on the upper end cover 1, or the second baffle 31 can be provided only on the lower end cover 3, or an annular limiting plate with the same double-layer structure as the upper end cover 1 can be provided on the lower end cover 3.

[0041] In one embodiment, in order to ensure the overall molding quality of the filter and improve the anti-deformation strength, the upper end cover 1, the lower end cover 3 and the connecting rod 5 are integrally constructed. By integrally constructing the upper end cover 1 and the lower end cover 3, there is no need to assemble too many parts. At the same time, compared with the connection of scattered parts, the integral structure has a greater anti-deformation strength and can better protect the filter element 4 from being squeezed.

[0042] In one embodiment, the support and protection net 2 is a flexible structure, formed of plastic in one piece, without welding, ensuring that the support and protection net 2 is lightweight and has high compressive strength. Figure 8 and Fig. 9 As shown, the two ends of the support protection net 2 are respectively connected to the upper end cover 1 and the lower end cover 3, and are located on the outside of the filter element 4, forming a protective layer for the filter element 4 to prevent the filter element 4 from being deformed by pressure from the side and causing leakage. As another variation of this embodiment, the support protection net 2 can also be a rigid roller structure, and filter holes are set on the side wall of the rigid rolling structure, so as to achieve the effect of the support protection net 2.

[0043] The above is only a preferred embodiment of the present invention. It should be noted that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A filter with anti-deformation capability, characterized in that: include: An upper end cover having a feed port thereon; A lower end cover is arranged below the upper end cover, the central axis of the lower end cover coincides with the central axis of the upper end cover, wherein a preset distance is provided between the lower end cover and the upper end cover; A support protection net is arranged between the upper end cover and the lower end cover, one end of the support protection net is connected to the edge of the upper end cover, and the other end of the support protection net is connected to the edge of the lower end cover, and the support protection net, the upper end cover and the lower end cover form a filter cavity; A filter element is disposed in the filter cavity, and the filter element is respectively abutted against the upper end cover and the lower end cover; and A connecting rod is arranged between the upper end cover and the lower end cover, one end of the connecting rod is connected to the upper end cover, and the other end of the connecting rod is connected to the lower end cover, so that the preset distance between the upper end cover and the lower end cover remains unchanged.

2. A filter with anti-deformation capability according to claim 1, characterized in that: The upper end cover, the lower end cover, the supporting protection net and the connecting rod are all made of plastic material.

3. A filter with anti-deformation capability according to claim 1, characterized in that: The central axis of the connecting rod coincides with the central axis of the upper end cover.

4. A filter with anti-deformation capability according to claim 3, characterized in that: One end of the connecting rod passes through the feed port, and a uniformly distributed connecting bracket is arranged on the non-filter cavity side of the upper end cover, and one end of the connecting rod passing through the feed port is connected to the connecting bracket.

5. The filter with anti-deformation capability according to claim 1, characterized in that: The upper end cover is provided with a sealing ring, and the sealing ring is arranged along the side of the upper end cover to form an annular closed structure.

6. The filter with anti-deformation capability according to claim 2, characterized in that: The filter element is composed of filter paper, and the filter paper has a plurality of pleated structures, wherein the folds of the filter paper are parallel to the central axis of the upper end cover.

7. A filter with anti-deformation capability according to claim 6, characterized in that: An annular limiting plate is provided on the upper end cover and / or an annular limiting plate is provided on the lower end cover, and the side edge of the filter element abuts against the annular limiting plate so that the filter element surrounds to form a first channel.

8. The filter with anti-deformation capability according to claim 2, characterized in that: The upper end cover, the lower end cover and the connecting rod are integrally constructed.

9. The filter with anti-deformation capability according to claim 1, characterized in that: The supporting protection net is a flexible structure, and the supporting protection net is an integral structure.

10. The filter with anti-deformation capability according to claim 4, characterized in that: The connecting brackets are symmetrically distributed on the upper end cover, wherein the connecting brackets protrude toward a side away from the filter element to form a clamping position.

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