A filter end cap fixing device
By installing upper and lower protective covers on the filter end caps, enhancing connection stability through a plug-in mechanism and rubber sleeve, and installing sealing strips and a drying mechanism on the inner wall, the problem of flange oxidation and corrosion is solved, achieving stable connection and improved sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI SISHUN FILTER EQUIPMENT CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-05-26
AI Technical Summary
The flanges of existing filter end caps are prone to oxidation and corrosion, which can cause bolts to loosen and affect the sealing effect of the connection.
The upper and lower protective covers are connected to the upper and lower sides of the flange respectively. The connection stability is enhanced by the plug-in mechanism and rubber sleeve. A sealing strip and a drying mechanism are set on the inner wall to improve the sealing and anti-oxidation effect.
It effectively protects the flange, prevents oxidation and corrosion, enhances connection stability and sealing, keeps the inside of the filter dry, and extends its service life.
Smart Images

Figure CN224270443U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter end cap technology, and in particular to a filter end cap fixing device. Background Technology
[0002] Filters are an indispensable device in pipelines that transport media. They are usually installed at the inlet end of pressure reducing valves, pressure relief valves, constant water level valves, and other equipment. A filter consists of a cylinder, end caps, stainless steel filter screen, sewage discharge section, transmission device, and electrical control section. The end caps are the two ends of the filter and are made of metal or plastic. They can fix the filter element and seal the filter.
[0003] Existing end caps are connected to the cylinder via flanges, but the flanges are exposed to the outside for a long time and are prone to oxidation and corrosion, which can cause the bolts to loosen and affect the sealing effect of the flange connection. To address this issue, we propose a filter end cap fixing device. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a filter end cap fixing device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A filter end cap fixing device includes a filter cylinder, the filter cylinder being connected to an end cap via a connecting flange, an upper protective cap and a lower protective cap being engaged with the surface of the connecting flange, an insertion mechanism being fixedly connected to the end of the upper protective cap, a connecting mechanism being fixedly connected to the end of the lower protective cap, and a drying mechanism being installed inside both the upper and lower protective caps.
[0007] Preferably, the plug-in mechanism includes a first connecting frame, the end of the upper protective cover is fixedly connected to the first connecting frame, and the end of the first connecting frame is fixed with multiple sets of plug-in posts at equal intervals.
[0008] Preferably, the connecting mechanism includes a second connecting frame, the end of the lower protective cover is fixedly connected to the second connecting frame, and the interior of the second connecting frame has multiple sets of slots adapted to the plug-in posts.
[0009] Preferably, the surface of the insertion post is covered with a first rubber sleeve, and the inner wall of the slot is glued with a second rubber sleeve.
[0010] Preferably, the inner walls of both the upper and lower protective covers are provided with annular grooves, and the inner walls of the upper and lower protective covers are bonded with two sets of sealing strips, with the distance between the two sets of sealing strips being greater than the size of the annular grooves.
[0011] Preferably, the drying mechanism includes mounting bolts, mounting blocks are mounted on the inner wall of the annular groove by the mounting bolts, and a limiting filter plate is fixedly connected to the inner side of the mounting block, and activated carbon bags are placed between the multiple sets of mounting blocks.
[0012] Preferably, the cross-section of the mounting block and the limiting filter plate is combined to form an annular shape, and the surface dimensions of the mounting block and the limiting filter plate are adapted to the inner wall dimensions of the annular groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This device seals and protects the bolts inserted into the connecting flange and the connecting flange by engaging the upper and lower protective covers on the upper and lower sides of the connecting flange. At the same time, the first connecting frame drives the plug-in post to be inserted into the second connecting frame, which facilitates the limiting connection between the upper and lower protective covers. The contact between the first and second rubber sleeves increases the stability of the plug-in post and the second connecting frame.
[0015] 2. The device enhances the sealing effect of the upper and lower protective covers by using sealing strips glued to the inner walls of the upper and lower protective covers. At the same time, the installation bolts pass through the mounting blocks and connect to the inner walls of the upper or lower protective covers, facilitating the installation of the limiting filter plates. The limiting filter plates can then confine multiple activated carbon packs between the mounting blocks, ensuring that the inside of the upper and lower protective covers remains dry and improving the protective effect. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of a filter end cap fixing device proposed in this utility model;
[0017] Figure 2 for Figure 1 A schematic diagram showing the three-dimensional separation of the upper and lower protective covers.
[0018] Figure 3 for Figure 1 A three-dimensional schematic diagram of the first and second connecting frames in the diagram;
[0019] Figure 4 for Figure 1 A three-dimensional exploded view of the installation block and activated carbon bag structure.
[0020] In the diagram: 1. Filter housing; 2. Connecting flange; 3. Upper protective cover; 4. Lower protective cover;
[0021] 5. Insertion mechanism; 51. First connecting frame; 52. Insertion post; 53. First rubber sleeve;
[0022] 6. Connecting mechanism; 61. Second connecting frame; 62. Second rubber sleeve;
[0023] 7. Drying mechanism; 71. Mounting bolts; 72. Mounting block; 73. Limiting filter plate; 74. Activated carbon bag;
[0024] 8. Sealing strips. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0026] Reference Figure 1-4 A filter end cap fixing device includes a filter cylinder 1. The filter cylinder 1 is connected to an end cap via a connecting flange 2. An upper protective cover 3 and a lower protective cover 4 are engaged with the surface of the connecting flange 2. The upper and lower protective covers 3 and 4 can cover and protect the connecting flange 2. An insertion mechanism 5 is fixedly connected to the end of the upper protective cover 3, and a connecting mechanism 6 is fixedly connected to the end of the lower protective cover 4. A drying mechanism 7 is installed inside both the upper and lower protective covers 3 and 4. The drying mechanism 7 can keep the inside of the upper and lower protective covers 3 and 4 dry, thereby improving the protection effect.
[0027] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the plug-in mechanism 5 includes a first connecting frame 51, the end of the upper protective cover 3 is fixedly connected to the first connecting frame 51, and the end of the first connecting frame 51 is fixed with multiple sets of plug-in posts 52 at equal intervals. The first connecting frame 51 and the plug-in posts 52 can facilitate the plug-in installation of the upper protective cover 3 and the lower protective cover 4.
[0028] Furthermore, refer to Figure 2 and Figure 3 It can be seen that the connecting mechanism 6 includes a second connecting frame 61. The end of the lower protective cover 4 is fixedly connected to the second connecting frame 61, and the interior of the second connecting frame 61 has multiple slots that are compatible with the plug-in post 52. The plug-in post 52 can be inserted into the slot by the first connecting frame 51, so that the upper protective cover 3 and the lower protective cover 4 can be connected and installed.
[0029] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the surface of the plug 52 is covered with a first rubber sleeve 53, and the inner wall of the slot is glued with a second rubber sleeve 62. The plug 52 drives the first rubber sleeve 53 to abut against the second rubber sleeve 62, which can increase the plug stability of the plug 52 and prevent loosening.
[0030] Furthermore, refer to Figure 2 and Figure 3It can be seen that the inner walls of the upper protective cover 3 and the lower protective cover 4 are both provided with annular grooves. The inner walls of the upper protective cover 3 and the lower protective cover 4 are bonded with two sets of sealing strips 8, and the distance between the two sets of sealing strips 8 is larger than the size of the annular grooves. The annular grooves provided on the inner walls of the upper protective cover 3 and the lower protective cover 4 facilitate the installation of the drying mechanism 7, and the sealing strips 8 can increase the sealing between the upper protective cover 3 and the lower protective cover 4 and the connecting flange 2.
[0031] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the drying mechanism 7 includes mounting bolts 71. Mounting blocks 72 are mounted on the inner wall of the annular groove through mounting bolts 71. The mounting bolts 71 pass through the mounting blocks 72 and are threaded into the annular groove, which facilitates the installation of the mounting blocks 72 and the function of the limiting filter plate 73. The limiting filter plate 73 is fixedly connected to the inner side of the mounting blocks 72. Activated carbon bags 74 are placed between multiple sets of mounting blocks 72. The activated carbon bags 74 can keep the upper protective cover 3 and the lower protective cover 4 dry. At the same time, the limiting filter plate 73 can limit and support the activated carbon bags 74.
[0032] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the cross-section of the mounting block 72 and the limiting filter plate 73 is combined into an annular shape. The surface dimensions of the mounting block 72 and the limiting filter plate 73 are adapted to the inner wall dimensions of the annular groove. By setting the cross-section of the mounting block 72 and the limiting filter plate 73 to an annular shape, they can be placed into the annular groove.
[0033] Working principle: When this utility model is in use, when the filter cylinder 1 is in use, according to the attached... Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4By fitting the upper protective cover 3 and the lower protective cover 4 onto the upper and lower sides of the connecting flange 2, the upper protective cover 3 and the lower protective cover 4 can drive the first connecting frame 51 and the second connecting frame 61 to move closer together. When the insertion post 52 drives the first rubber sleeve 53 to insert into the second rubber sleeve 62, the upper protective cover 3 and the lower protective cover 4 can be connected and installed, and the upper protective cover 3 and the lower protective cover 4 can drive the sealing strip 8 to contact the surface of the connecting flange 2, so that the upper protective cover 3 and the lower protective cover 4 can cover and protect the surface of the connecting flange 2, reduce oxidation, and the activated carbon bag 74 can make the upper protective cover... Keep the upper protective cover 3 and the lower protective cover 4 dry. When the activated carbon bag 74 needs to be replaced, separate the upper protective cover 3 and the lower protective cover 4 and remove the mounting bolt 71. This will allow the mounting block 72, the limiting filter plate 73, and the activated carbon bag 74 to be removed from the upper protective cover 3 or the lower protective cover 4. After the activated carbon bag 74 is replaced, put the mounting block 72, the limiting filter plate 73, and the activated carbon bag 74 into the upper protective cover 3 and the lower protective cover 4 in sequence. Let the mounting bolt 71 pass through the mounting block 72 and be threaded to the inner wall of the upper protective cover 3 or the lower protective cover 4 to facilitate the function of limiting the activated carbon bag 74.
[0034] The above is the complete working principle of this utility model.
[0035] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.
[0036] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.
[0037] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. A filter end cap fixing device, comprising a filter cylinder (1), characterized in that, The filter cylinder (1) is connected to an end cap via a connecting flange (2). An upper protective cover (3) and a lower protective cover (4) are engaged on the surface of the connecting flange (2). A plug-in mechanism (5) is fixedly connected to the end of the upper protective cover (3), and a connecting mechanism (6) is fixedly connected to the end of the lower protective cover (4). A drying mechanism (7) is installed inside both the upper protective cover (3) and the lower protective cover (4).
2. The filter end cap fixing device according to claim 1, characterized in that, The plug-in mechanism (5) includes a first connecting frame (51), the end of the upper protective cover (3) is fixedly connected to the first connecting frame (51), and the end of the first connecting frame (51) is fixed with multiple sets of plug-in posts (52) at equal intervals.
3. The filter end cap fixing device according to claim 1, characterized in that, The connecting mechanism (6) includes a second connecting frame (61), the end of the lower protective cover (4) is fixedly connected to the second connecting frame (61), and the interior of the second connecting frame (61) has multiple sets of slots that are compatible with the plug-in post (52).
4. The filter end cap fixing device according to claim 3, characterized in that, The surface of the plug (52) is covered with a first rubber sleeve (53), and the inner wall of the slot is glued with a second rubber sleeve (62).
5. A filter end cap fixing device according to claim 1, characterized in that, The inner walls of the upper protective cover (3) and the lower protective cover (4) are provided with annular grooves. The inner walls of the upper protective cover (3) and the lower protective cover (4) are bonded with two sets of sealing strips (8), and the distance between the two sets of sealing strips (8) is greater than the size of the annular groove.
6. A filter end cap fixing device according to claim 5, characterized in that, The drying mechanism (7) includes mounting bolts (71), and mounting blocks (72) are mounted on the inner wall of the annular groove by the mounting bolts (71). A limiting filter plate (73) is fixedly connected to the inner side of the mounting block (72), and activated carbon bags (74) are placed between the multiple sets of mounting blocks (72).
7. A filter end cap fixing device according to claim 6, characterized in that, The cross-section of the mounting block (72) and the limiting filter plate (73) is combined to form an annular shape, and the surface dimensions of the mounting block (72) and the limiting filter plate (73) are adapted to the inner wall dimensions of the annular groove.