Filter element cover

Abstract

The utility model relates to a filter element cover which comprises two groups of filter element covers and a filter element, the filter element is arranged between the two groups of filter element covers, a filter element frame for supporting the filter element is arranged on the inner side of the filter element, the filter element frame penetrates through the filter element covers and extends outwards, a sealing structure for improving the sealing effect is arranged on the inner side surfaces of the filter element covers, and the filter element frame penetrates through the sealing structure. The sealing structure comprises a lower mounting frame, a mounting ring and an O-shaped sealing ring, the lower mounting frame is located on the inner side face of the filter element cover, the outer end face of the lower mounting frame bends and extends towards the inner side, so that a cavity is formed in the lower mounting frame, a mounting ring is mounted in the cavity, grooves are symmetrically formed in the inner side face of the mounting ring, and O-shaped sealing rings are arranged in the grooves. The filter element cover solves the problems that in an existing filter element cover, the sealing ring cannot effectively achieve adaptive deformation under the condition that the temperature and the pressure change, and the sealing and filtering effects cannot be improved.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically a filter cartridge cover. Background Technology

[0002] Filter cartridges have a wide range of applications, including industrial and medical fields. Filter cartridges are typically fixed by a cartridge holder and sealed at the top and bottom with cartridge covers. The cartridge cover and cartridge holder are in a sealed state, usually with a sealing ring inside. This sealing ring achieves a sealing effect. However, while this simple sealing ring provides a certain degree of sealing, it cannot adapt to changes in temperature and pressure, leading to friction between the sealing ring and the cartridge holder. If this friction occurs repeatedly or over a long period, it can easily cause the sealing ring to age, reducing its lifespan and preventing it from providing a proper seal between the cartridge holder and the cartridge cover for an extended period.

[0003] Secondly, current filter cartridge covers are simply placed on top of the filter cartridge, which cannot achieve outward expansion and clamping of the filter cartridge. When fluid or air passes through the filter cartridge, the filter cartridge end in contact with the filter cartridge cover is prone to bending due to impact or pressure. This will reduce the sealing effect, and fluid or air may pass directly through the gap between the filter cartridge and the filter cartridge cover, reducing the filtration effect.

[0004] Therefore, in order to cope with changes in temperature and pressure, and to enable the sealing ring to adapt to deformation, preventing friction between the sealing ring and the filter element holder caused by temperature and pressure changes, thus preventing the sealing ring from aging rapidly and affecting the sealing effect, and also to ensure a tight connection between the filter element and the filter element cover, a filter element cover is proposed that can adapt to temperature and pressure changes and enable the sealing ring to adapt to deformation, thereby improving the service life of the sealing ring and enhancing the sealing effect. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a filter cartridge cover that solves the problem that the sealing ring in existing filter cartridge covers cannot effectively adapt to changes in temperature and pressure, and thus cannot improve sealing and filtration effects.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter element cover, comprising two sets of filter element covers and a filter element, with the filter element installed between the two sets of filter element covers. A filter element frame is installed inside the filter element to provide support for the filter element, and the filter element frame extends outward through the filter element cover. A sealing structure for improving the sealing effect is installed on the inner side of the filter element cover, and the filter element frame passes through the sealing structure. The sealing structure includes a lower mounting bracket, a mounting ring, and an O-ring seal. The lower mounting bracket is located on the inner side of the filter element cover, and its outer end face bends inward to form a cavity inside the lower mounting bracket. A mounting ring is installed in the cavity, and grooves are symmetrically opened on the inner side of the mounting ring, with an O-ring seal provided in the groove.

[0007] Furthermore, the surface of the groove is provided with protrusions arranged in a ring array.

[0008] Furthermore, through the above technical solution, the diameter of the O-ring is smaller than the groove width, but the diameter of the O-ring is larger than the groove depth, and the O-ring contacts the surface of the filter element holder.

[0009] Furthermore, a soft pad is installed on the inner wall of the inner side of the filter element cover, and the outer end face of the filter element contacts the soft pad. An elastic sheet is fitted in region A of the filter element, and the elastic sheet opens the two sides of region A of the filter element outward.

[0010] As a preferred technical solution, an upper mounting bracket is also installed on the upper end face of the filter element cover, and the upper mounting bracket wraps around the contact end between the filter element frame and the filter element cover.

[0011] Compared with the prior art, the present invention provides a filter cartridge cover, which has the following beneficial effects:

[0012] 1. This filter cover improves the sealing effect through the use of the mounting ring and O-ring. It can also adapt to changes in temperature and pressure by deforming the O-ring. Specifically, when the temperature or pressure rises, the O-ring expands in volume. The groove on the inner side of the mounting ring provides space for the O-ring. Furthermore, the use of a double-layer O-ring further improves the sealing effect of the O-ring.

[0013] 2. Through the action of the protrusion, when the O-ring is deformed, it will contact the protruding end, which makes the O-ring distributed in an S-shape. This increases the contact area between the deformed O-ring and the filter element frame, thereby further improving the sealing effect of the O-ring.

[0014] 3. Utilizing the elastic sheet and soft pad, first insert the elastic sheet into, for example... Figure 5The end of region A is designed so that both sides of the filter element end can expand outward. Secondly, the diameter of the elastic sheet is larger than the inner diameter of the filter element cover. Therefore, after the elastic sheet is inserted into region A, the filter element with the elastic sheet is then inserted into the filter element cover, so that the end of the filter element contacts the soft pad. This increases the friction between the two, which helps to fix the filter element. Through the action of the elastic sheet, the filter element at the connection with the filter element cover can be prevented from bending due to pressure, which would cause gaps at the connection between the filter element and the filter element cover and affect its filtration effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 This is a bottom view of the filter element cover of this utility model;

[0017] Figure 3 This utility model Figure 2 A schematic diagram of the AA cross-sectional structure;

[0018] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A;

[0019] Figure 5 This is a schematic diagram of the filter element structure and region A of the filter element of this utility model;

[0020] Figure 6 This is a schematic diagram of the lower mounting bracket structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the mounting ring structure of this utility model;

[0022] Figure 8 This utility model Figure 7 Schematic diagram of the BB cross-section structure;

[0023] Figure 9 This utility model Figure 8 A magnified schematic diagram of the structure at point B.

[0024] In the diagram: 1. Filter cover; 2. Filter element; 3. Filter element holder; 4. Upper mounting bracket; 5. Lower mounting bracket; 6. Elastic sheet; 7. Soft pad; 8. Mounting ring; 9. O-ring seal; 10. Protrusion. Detailed Implementation

[0025] 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.

[0026] Example

[0027] Please see Figure 1-9 The present invention provides the following technical solution: a filter element cover, comprising two sets of filter element covers 1 and filter elements 2, with filter elements 2 installed between the two sets of filter element covers 1. A filter element frame 3 is installed inside the filter element 2 to provide support for the filter element 2. The filter element frame 3 extends outward through the filter element cover 1. A sealing structure for improving the sealing effect is installed on the inner side of the filter element cover 1. The filter element frame 3 passes through the sealing structure. The sealing structure includes a lower mounting bracket 5, a mounting ring 8, and an O-ring seal 9. The lower mounting bracket 5 is located on the inner side of the filter element cover 1. The outer end face of the lower mounting bracket 5 bends inward to form a cavity inside the lower mounting bracket 5. The mounting ring 8 is installed in the cavity. Grooves are symmetrically opened on the inner side of the mounting ring 8. An O-ring seal 9 is provided in the groove.

[0028] In this implementation scheme, the specific working principle is as follows: after the filter element cover 1 is installed on the upper and lower ends of the filter element 2, the filter element frame 3 passes through the filter element cover 1. After the filter element frame 3 passes through the mounting ring 8, the filter element frame 3 contacts the O-ring seal 9 in the groove. Through the action of the two sets of O-ring seals 9, the sealing effect can be improved, thereby preventing the problem of fluid or air flowing out from the gap.

[0029] Based on the above, in order to further improve the sealing effect, please refer to the following: Figure 8 and Figure 9 As can be seen, the groove surface has protrusions 10 arranged in a ring array. Therefore, when the temperature or pressure changes, the O-ring 9 expands. The expanded O-ring 9 contacts the protrusions 10, which makes the O-ring 9 arranged in an S-shape. This increases the contact area between the deformed O-ring 9 and the filter element frame 3, thereby further improving the sealing effect of the O-ring 9.

[0030] Based on the above, in order to achieve adaptive deformation of the O-ring 9 when temperature or pressure changes, please refer to [the relevant documentation]. Figure 4 It can be seen that the diameter of the O-ring 9 is smaller than the groove width, but the diameter of the O-ring 9 is larger than the groove depth. The O-ring 9 is in contact with the surface of the filter element holder 3, so that the O-ring 9 can move appropriately in the groove and there is enough space to support the deformation of the O-ring 9.

[0031] To help secure the filter element 2 and prevent bending of the filter element 2 at the connection with the filter element cover 1 due to pressure, which could create gaps at the connection and affect its filtration effect, please refer to [link to relevant documentation]. Figure 2 , Figure 4 , Figure 5 As can be seen, a soft pad 7 is also installed on the inner wall of the inner side of the filter element cover 1, and the outer end face of the filter element 2 contacts the soft pad 7. An elastic sheet 6 is fitted in region A of the filter element 2. The elastic sheet 6 opens the two sides of region A of the filter element 2 outward. The elastic sheet 6 is inserted into the... Figure 5 The end of region A is positioned so that both sides of the end of filter element 2 can expand outward. Secondly, the diameter of the elastic sheet 6 is larger than the inner diameter of the filter element cover 1. Therefore, after the elastic sheet 6 is inserted into region A, the filter element 2 with the elastic sheet 6 is then inserted into the filter element cover 1, so that the end of the filter element 2 contacts the soft pad 7. This increases the friction between the two, which helps to fix the filter element 2. Through the action of the elastic sheet 6, the bending of the filter element 2 at the connection with the filter element cover 1 due to pressure can be prevented, thus avoiding gaps at the connection between the filter element 2 and the filter element cover 1 and affecting its filtration effect.

[0032] To protect the connection between the filter element cover 1 and the filter element holder 3, please refer to the following for details. Figure 1 As can be seen, an upper mounting bracket 4 is also installed on the upper end of the filter element cover 1, which wraps the filter element frame 3 and the contact end of the filter element cover 1.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A filter cartridge cover, comprising two sets of filter cartridge covers (1) and a filter cartridge (2), wherein a filter cartridge (2) is installed between the two sets of filter cartridge covers (1), and a filter cartridge frame (3) for supporting the filter cartridge (2) is installed inside the filter cartridge (2), wherein the filter cartridge frame (3) extends outward through the filter cartridge cover (1), characterized in that: A sealing structure for improving sealing effect is installed on the inner side of the filter element cover (1). The filter element frame (3) passes through the sealing structure. The sealing structure includes a lower mounting frame (5), a mounting ring (8), and an O-ring (9). The lower mounting frame (5) is located on the inner side of the filter element cover (1). The outer end face of the lower mounting frame (5) is bent and extended inward, so that a cavity is formed inside the lower mounting frame (5). The mounting ring (8) is installed in the cavity. The inner side of the mounting ring (8) is symmetrically provided with grooves, and an O-ring (9) is provided in the groove.

2. A filter cartridge cover according to claim 1, characterized in that: The surface of the groove is provided with protrusions (10) arranged in a ring array.

3. A filter cartridge cover according to claim 1, characterized in that: The diameter of the O-ring (9) is smaller than the groove width, but the diameter of the O-ring (9) is larger than the groove depth. The O-ring (9) is in contact with the surface of the filter element holder (3).

4. A filter cartridge cover according to claim 1, characterized in that: A soft pad (7) is also installed on the inner wall of the inner side of the filter element cover (1), and the outer end face of the filter element (2) contacts the soft pad (7). An elastic sheet (6) is sleeved in the A region of the filter element (2), and the elastic sheet (6) pushes the two sides of the A region of the filter element (2) outward.

5. A filter cartridge cover according to claim 1, characterized in that: The upper end face of the filter element cover (1) is also equipped with an upper mounting bracket (4), which wraps the filter element frame (3) and the filter element cover (1) at the contact end.

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