A filter cartridge support structure and filter

Abstract

The utility model discloses a filter core support structure, including elastic part, support spare and positioning spare, the positioning spare with elastic part fixed connection, support spare with positioning spare or elastic part fixed connection, be provided with the abutting end for abutting to filter core on the positioning spare, be provided with two or more than two support ends for abutting to the filter inner wall along the radial direction on the support spare. Still disclose a filter. The utility model discloses the combination support structure of elastic part, support spare, positioning spare, provide stable axial support to filter core while through two or more than two support ends of support spare and filter inner wall mutually resist and cooperate to realize the radial support to elastic part and positioning spare, thereby need not welding fixed also can ensure the stability of whole support structure, have excellent durability while carrying out stable support to filter core, and the convenient detachable function of support structure to the cylinder in provides great convenience to the replacement cleaning of filter core.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline filters, and relates to a filter element support structure and a filter. Background Technology

[0002] As a core component of liquid and gas filtration systems, the structural design of pipeline filters directly affects filtration efficiency and maintenance costs.

[0003] In the prior art, referring to Figure 10 As shown, in order to achieve stable positioning of the filter element in the cylinder and sealed connection with the upper cover pipe, a support structure with a spring assembly welded to the bottom of the cylinder is generally adopted. This structure uses a spring with one end welded to the inner wall of the bottom of the cylinder and the other end connected to a positioning component. The spring force pushes the positioning component to abut the bottom of the filter element.

[0004] However, this structure has inherent technical defects: First, the welding operation must be carried out in a narrow space at the bottom of the cylinder, the weld point location is poorly visible and heat input is difficult to control, which easily leads to uneven welding strength and process risks such as incomplete welding and overheating; Second, the welded and fixed spring assembly forms a permanent structure that cannot be removed when replacing the filter element, hindering the thorough cleaning of the inner wall of the cylinder, and residual contaminants accelerate the clogging of the new filter element; Third, the high temperature of welding causes changes in the metal lattice, and the corrosion resistance of the weld point area is significantly reduced. After long-term contact with the fluid medium, electrochemical corrosion is likely to occur, which will lead to spring breakage. After the spring breaks, it is difficult to repair it in situ, and the entire cylinder needs to be replaced, which greatly increases the equipment's life cycle cost.

[0005] Such structural defects are particularly prominent in fields with stringent cleanliness requirements, such as chemical and pharmaceutical industries, and there is an urgent need to develop a detachable, weld-free filter element support solution to overcome the technical bottleneck. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a filter element support structure and a filter.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A filter element support structure includes an elastic element, a support element, and a positioning element. The positioning element is fixedly connected to the elastic element, and the support element is fixedly connected to the positioning element or the elastic element. The positioning element is provided with an abutting end for abutting against the filter element, and the support element is provided with two or more supporting ends for abutting against the inner wall of the filter radially.

[0009] Furthermore, the end of the support is bent along a predetermined direction to form a bent portion.

[0010] Furthermore, the end of the support is provided with an arc portion.

[0011] Furthermore, the number of support ends is three, and they are arranged in a ring array.

[0012] Furthermore, the elastic element is a spring.

[0013] Furthermore, the elastic element and the positioning element are respectively fixedly connected to both ends of the support element.

[0014] Furthermore, the support member and the positioning member are respectively fixedly connected to both ends of the elastic member.

[0015] Furthermore, the elastic element and the support element are respectively fixedly connected to both ends of the positioning element.

[0016] A filter includes a cylindrical shell, a top cover, a filter element, and the aforementioned support structure. The cylindrical shell has a cavity for accommodating the filter element. The filter element is connected to the top cover, and the top cover is connected to the cylindrical shell. The support structure is disposed within the cavity.

[0017] Furthermore, the support structure abuts against the bottom of the filter element and the bottom of the cavity along the axial direction of the cavity, respectively, and the support end abuts against the inner peripheral wall of the cavity radially.

[0018] In summary, the advantages of this utility model are as follows:

[0019] This utility model adopts a combined support structure of elastic element, support element and positioning element. While the elastic element and positioning element provide stable axial support for the filter element, the radial support is achieved by the two or more support ends of the support element abutting against the inner wall of the filter. Therefore, the stability of the entire support structure can be ensured without welding and fixing. It provides stable support for the filter element and has excellent durability. In addition, the convenient detachable function of the support structure into the cylinder provides great convenience for the replacement and cleaning of the filter element. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0022] Figure 3 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0023] Figure 4 This is an axial view of the supporting structure.

[0024] Figure 5 This is a schematic diagram of a support structure with three support ends.

[0025] Figure 6 for Figure 5 Axial view in the image.

[0026] Figure 7 Schematic diagrams of several embodiments with an arcuate portion at the end of the support.

[0027] Figure 8 This is a schematic diagram of the structure of the filter of this utility model.

[0028] Figure 9 for Figure 8 A schematic diagram of the cross-sectional structure inside the cavity.

[0029] Figure 10 This is a schematic diagram of the filter element support structure in an existing filter.

[0030] Figure 11 This is a schematic diagram of the filter element support structure in an existing filter.

[0031] The markings in the diagram are: 11. Positioning component; 12. Support component; 121. Bending part; 122. Arc part; 13. Elastic component; 2. Filter element; 3. Shell of cylinder; 31. Cavity; 4. Top cover. Detailed Implementation

[0032] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0034] In this embodiment of the invention, all directional indicators (such as up, down, left, right, front, back, horizontal, vertical, etc.) are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0035] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of this utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0036] In the prior art, pipeline filters, refer to Figure 10 As shown, in order to achieve stable positioning of the filter element in the cylinder and sealed connection with the upper cover pipe, a support structure with a spring assembly welded to the bottom of the cylinder is generally adopted. This structure uses a spring with one end welded to the inner wall of the bottom of the cylinder and the other end connected to a positioning component. The spring force pushes the positioning component to abut the bottom of the filter element.

[0037] However, this structure has inherent technical defects: First, the welding operation must be carried out in a narrow space at the bottom of the cylinder, the weld point location is poorly visible and heat input is difficult to control, which easily leads to uneven welding strength and process risks such as incomplete welding and overheating; Second, the welded and fixed spring assembly forms a permanent structure that cannot be removed when replacing the filter element, hindering the thorough cleaning of the inner wall of the cylinder, and residual contaminants accelerate the clogging of the new filter element; Third, the high temperature of welding causes changes in the metal lattice, and the corrosion resistance of the weld point area is significantly reduced. After long-term contact with the fluid medium, electrochemical corrosion is likely to occur, which will lead to spring breakage. After the spring breaks, it is difficult to repair it in situ, and the entire cylinder needs to be replaced, which greatly increases the equipment's life cycle cost.

[0038] For example Figure 11 Another existing filter structure shown uses a top cover with a central rod, through which the filter element passes. The filter element is supported by a positioning component connected to the bottom of the central rod. This solution increases the complexity of the top cover components, increases costs excessively, and makes filter element disassembly and assembly difficult.

[0039] This embodiment provides a filter element support structure for use in liquid and gas filters. It is mainly set inside the outer shell 3 of the filter to provide support and limit the filter element 2, so as to make the position of the filter element 2 more stable during the filtration process, ensure the filtration effect, and support the installation of filter elements 2 of different sizes and specifications.

[0040] Reference Figure 8 The filter includes a cylindrical shell 3 and a top cover 4. The top cover 4 is connected to the cylindrical shell 3 by a threaded connection or by a clamp connection. The cylindrical shell 3 of the filter has a cavity 31 for accommodating the filter element 2. One end of the cavity 31 forms an opening for the filter element 2 to be inserted into the filter. The filter element 2 is usually fixed together with the top cover 4. After the top cover 4 is connected to the cylindrical shell 3, the filter element 2 is suspended in the cavity 31. The top cover 4 has an inlet and an outlet. Liquid or air enters the cavity 31 through the inlet, is filtered by the filter element 2, and is discharged from the outlet.

[0041] Preferably, the outer shell 3 is cylindrical, the axial projection section of the cavity 31 is circular, the filter element 2 is installed axially inside the cavity 31, and the bottom of the filter element 2 is a certain height away from the bottom of the cavity 31.

[0042] When the filter is in operation, the internal liquid or gas may cause impacts due to flow, or the entire filter may be subjected to vibrations transmitted through the pipeline. The filter suspended in the cavity 31 may loosen the connection between the filter element 2 and the top cover 4 under long-term impact. Therefore, this embodiment further includes a support structure, which is set between the bottom of the filter element 2 and the bottom of the cavity 31 to further provide bottom support and positioning for the filter element 2 and reduce the loosening of the filter element 2 due to impact.

[0043] Specifically, the support structure includes a positioning element 11, an elastic element 13, and a support element 12. The positioning element 11 is provided with an abutting end for abutting against the filter element 2 to form support. The positioning element 11, the elastic element 13, and the support element 12 are arranged sequentially along the axial direction of the cavity 31 in a set arrangement order. The support structure is movably installed in the cavity 31, which facilitates quick installation, disassembly, and replacement by the user.

[0044] The elastic element 13 is preferably a spring. The elastic element 13 is arranged along the axial direction of the cavity 31 to provide elastic support and extension and contraction of the filter element 2 in the axial direction, so that the support structure can be stably abutted against the filter element 2 even when the size of the filter element 2 is different or the installation position is different.

[0045] The outer periphery of the support member 12 is provided with two or more support ends, which abut against the inner wall of the filter (i.e., the inner peripheral wall of the cavity 31) in the radial direction, thereby forming radial support for the support structure. (Refer to...) Figure 9 As shown, this is to maintain the stability of the entire support structure in the radial direction of cavity 31.

[0046] Furthermore, in some embodiments, the end of the support is bent along the axial direction of the cavity 31 to form a bent portion 121. The outer side of the bent portion 121 abuts against the inner peripheral wall of the cavity 31, which increases the area of ​​the support member 12 abutting against the inner peripheral wall of the cavity 31 in the axial direction, thereby effectively improving the radial stability of the support member 12 and ensuring that it will not tilt when subjected to axial force.

[0047] Example 1:

[0048] Reference Figure 1The elastic element 13, the support element 12, and the positioning element 11 are arranged in sequence. The two ends of the support element 12 are fixedly connected to one end of the elastic element 13 and one end of the positioning element 11, respectively. The other end of the positioning element 11 abuts against the bottom of the filter element 2, and the other end of the elastic element 13 abuts against the bottom of the cavity 31. The bottom of the cavity 31 may also be provided with a protrusion for spring sleeve to make the spring more stable.

[0049] Example 2:

[0050] Reference Figure 2 The support member 12, the elastic member 13, and the positioning member 11 are arranged in sequence. The two ends of the elastic member 13 are fixedly connected to the support member 12 and the positioning member 11 respectively. One end of the positioning member 11 abuts against the bottom of the filter element 2, and one end of the support member 12 abuts against the bottom of the cavity 31. The support member 12 and the bottom of the cavity 31 form a large range of contact, which makes it more stable.

[0051] Example 3:

[0052] Reference Figure 3 The elastic element 13, the positioning element 11, and the support element 12 are arranged in sequence. The two ends of the positioning element 11 are fixedly connected to the support element 12 and the elastic element 13 respectively. One end of the support element 12 or the positioning element 11 abuts against the bottom of the filter element 2, and one end of the elastic element 13 abuts against the bottom of the cavity 31, making the filter element 2 more stable. The bottom of the cavity 31 is provided with a protrusion for spring sleeve, making the spring more stable.

[0053] In the above embodiments, the fixed connection between the elastic element 13, the positioning element 11, and the support element 12 is preferably achieved by welding. Alternatively, the elastic element 11 and the support element 12 are integral structures, formed by winding steel wire to create a continuous connection between the elastic element 11 and the support element 12. Or, the support element 12 can also be a sheet metal part, which is welded to the positioning element 11 and the elastic element 13. However, this utility model does not limit this in any way. Other fixed connection methods, such as snap-fit ​​connections, are also within the scope of protection of this utility model.

[0054] In some embodiments, refer to Figure 4 The support member 12 has two support ends, which respectively abut against the two sides of the inner peripheral wall of the cavity 31.

[0055] In other embodiments, reference is made to Figure 5 and Figure 6 The support member 12 has three support ends, which are distributed in a ring array in the axial projection view of the cavity 31. In larger filters, a three-point support positioning form can be adopted to further ensure radial stability.

[0056] In other embodiments, the end of the support is an arc portion 122 that matches the inner peripheral wall of the cavity 31. The angle of the arc portion 122 is a set value, including a range of 0°-360°. Various embodiments can be referred to. Figure 7 As shown in the image.

[0057] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A filter element support structure, characterized in that, It includes an elastic element (13), a support element (12), and a positioning element (11). The positioning element (11) is fixedly connected to the elastic element (13), and the support element (12) is fixedly connected to the positioning element (11) or the elastic element (13). The positioning element is provided with an abutting end for abutting against the filter element (2), and the support element (12) is provided with two or more supporting ends for abutting against the inner wall of the filter radially.

2. The filter element support structure according to claim 1, characterized in that, The end of the support is bent in a set direction to form a bend (121).

3. The filter element support structure according to claim 1, characterized in that, The end of the support is provided with an arc portion (122).

4. The filter element support structure according to claim 1, characterized in that, The number of support ends is three, and they are arranged in a ring array.

5. A filter element support structure according to claim 1, characterized in that, The elastic element (13) is a spring.

6. A filter element support structure according to any one of claims 1-5, characterized in that, The elastic element (13) and the positioning element (11) are respectively fixedly connected to both ends of the support element (12).

7. A filter element support structure according to any one of claims 1-5, characterized in that, The support member (12) and the positioning member (11) are respectively fixedly connected to both ends of the elastic member (13).

8. A filter element support structure according to any one of claims 1-5, characterized in that, The elastic element (13) and the support element (12) are respectively fixedly connected to both ends of the positioning element (11).

9. A filter, characterized in that, The device includes a cylindrical shell (3), a top cover (4), a filter element (2), and a support structure as described in any one of claims 1-8. The cylindrical shell (3) has a cavity (31) for accommodating the filter element (2). The filter element (2) is connected to the top cover (4), and the top cover (4) is connected to the cylindrical shell (3). The support structure is disposed in the cavity (31).

10. A filter according to claim 9, characterized in that, The support structure abuts against the bottom of the filter element (2) and the bottom of the cavity (31) along the axial direction of the cavity (31), and the support end abuts against the inner peripheral wall of the cavity (31) radially.

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