Filter cartridge end cover capable of preventing filter element from falling off
By designing conical reverse plates and fan-shaped support ribs on the end cover of the filter cartridge, the problem of easy degumming of the filter element in the traditional filter cartridge is solved, achieving higher filtration accuracy and service life, while reducing production costs.
Patent Information
- Application Number
- CN202421489711.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the use of traditional filter cartridges, due to the gap between the filter element and the end cap and the uneven filter element glue distribution, the filter element is easily degummed and the filtration effect is reduced.
A filter cartridge end cap is designed to prevent the filter element from falling off, using conical reverse plates and fan-shaped support ribs. The production cost is reduced and the coaxiality is improved through stamping forming technology, ensuring the coaxial installation of the filter element and the end cap, and increasing the adhesion strength.
Effectively prevent the filter element from shaking and degumming in the end cap, improve filtration accuracy and service life, while reducing production costs and improving efficiency.
Smart Images
Figure CN222871663U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of filters, in particular to a filter cartridge end cover for preventing a filter element from falling off. Background Art
[0002] The filter cartridge is a cylindrical filter element, usually composed of filter paper, end caps and metal mesh. The filter paper is folded in pleats and glued to form a star-shaped structure. Metal mesh is then placed on the inner and outer walls to form a stable filter element. Filter element glue is then poured into the end cap, and one end of the filter element is placed into the end cap. After the filter element glue is cured, the filter element and the end cap can be glued together. Since traditional filter cartridges only rely on filter element glue to bond the filter element to the end cap, during use, the filter cartridge is subject to the impact of exhaust gas and mechanical vibration, and the filter element is prone to shaking in the end cap and debonding and separation from the end cap, which will reduce the filtering effect of the filter cartridge.
[0003] The above problems are caused by two reasons. First, there is a gap between the filter element and the end cover, and the filter element is prone to shaking when it is impacted or vibrated. Second, when the filter element is inserted into the end cover and contacts the filter element glue, the staff tends to press the filter element against the end cover, and the filter element glue is liquid when it is not solidified. When the end of the filter element is against the end cover, the end of the filter element will squeeze out the filter element glue on the end cover, making it impossible for the filter element glue to evenly cover the end of the filter element. This results in uneven or incomplete adhesion of the filter element glue to the end of the filter element, and the adhesion strength of the filter element glue to the end of the filter element is insufficient. The filter element glue only forms a strong adhesion structure with the side wall of the filter element. When the filter element and the end cover are impacted or vibrated, the end of the filter element will first debond due to shaking due to insufficient adhesion strength, thereby accelerating the debonding speed of the filter element.
[0004] In order to solve the above problem, an end cover has appeared on the market, in which an inverted plate with a small upper part and a large lower part is coaxially welded on the top inner wall of the end cover. When the filter element is installed in the end cover, the inverted plate is inserted into the inner hole of the filter element to fix the filter element. Firstly, it prevents the filter element from shaking. Secondly, when installing the filter element, the filter element can be fixed by the inverted plate so that it is suspended in the air, and the filter element glue in the end cover can cover the end of the filter element, thereby strengthening the adhesion strength between the filter element and the end cover, and there is no need for the staff to hold the filter element in the air. However, this structure has the following defects: first, it is costly and inefficient, the coaxiality between the inverted plate and the end cover is difficult to control, and eccentricity is prone to occur. If the inverted plate and the end cover are eccentric, the filter element will easily become eccentric when it is installed, resulting in poor filtering effect and more prone to shaking; secondly, when installing the filter element, the thickness of the filter element glue poured into the end cover is inconsistent. If the workers cannot determine the thickness of the filter element glue, they cannot control the suspended position of the filter element well, and the filter element may fail to contact the filter element glue. Utility Model Content
[0005] The utility model aims to provide a filter cartridge end cover which is convenient to process, can prevent the filter element and the end cover from shaking, and can improve the adhesion strength between the end cover and the filter element and prevent the filter element from falling off.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a filter cartridge end cover for preventing the filter element from falling off, comprising: a circular end cover body, a downwardly protruding conical buckle plate stamped and formed in the middle of the end cover body, a side fixing plate bent downwardly and provided on the side wall of the end cover body, a closing plate extending inwardly and obliquely on the side fixing plate, the closing plate extending downward from the conical buckle plate, and a plurality of downwardly protruding supporting ribs stamped and formed along the circumference on the end cover body located between the conical buckle plate and the side fixing plate.
[0007] Furthermore, in the aforementioned filter cartridge end cover for preventing the filter element from falling off, the cross-section of the support rib is an arc-shaped shape, and the bottom wall of the support rib is a flat bottom wall.
[0008] Furthermore, in the aforementioned filter cartridge end cover for preventing the filter element from falling off, the support ribs are fan-shaped, and eight support ribs are arranged on the end cover body, four support ribs are spaced apart to form an outer circle, and the other four support ribs are spaced apart to form an inner circle, and the support ribs in the inner and outer circles are aligned in pairs to form a group of fan-shaped supports, the centers of the two support ribs in each group of fan-shaped supports are concentric, and the center positions of the four groups of fan-shaped supports are all different.
[0009] Furthermore, in the aforementioned filter cartridge end cover for preventing the filter element from falling off, the centers of the four groups of fan-shaped supports are connected to form a circle concentric with the end cover body.
[0010] Furthermore, in the aforementioned filter cartridge end cover for preventing the filter element from falling off, the side wall and the bottom wall of the buckle plate are connected with a rounded corner.
[0011] Furthermore, in the aforementioned filter cartridge end cover for preventing the filter element from falling off, the side fixing plate and the closing plate are connected by a smooth transition of an arc.
[0012] The utility model has the advantages that: the conical buckle plate on the end cover body is formed by stamping, which not only reduces the production cost and improves the production efficiency, but also can accurately control the coaxiality between the conical buckle plate and the end cover, so that the coaxiality between the filter element and the end cover can be guaranteed when the filter element is fixed, thereby ensuring the filtering accuracy of the filter element, and can also play a more stable supporting role for the filter element, and the filter element is not easy to shake; while stamping the conical buckle plate on the end cover body, support ribs protruding downward along the circumference can also be stamped on the end cover body, the support ribs can not only cooperate with the conical buckle plate to improve the structural strength of the end cover, but also when the filter element is installed, the end of the filter element abuts on the support ribs to form a gap between the end of the filter element and the end cover, thereby increasing the contact surface between the end of the filter element and the filter element glue, so that the filter element glue can be fully coated on the end of the filter element, thereby improving the adhesion strength between the filter element and the end cover, when the filter element or the end cover shakes or vibrates, the filter element is not easy to debond, thereby improving the service life of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the filter cartridge end cover for preventing the filter element from falling off described in the utility model.
[0014] Figure 2 yes Figure 1 Schematic diagram of the plan structure.
[0015] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure.
[0016] Figure 4 Yes Display Figure 2 Schematic diagram of the distribution trajectory of the center of the four groups of fan-shaped supports and the structure of the flat bottom wall on the support ribs. DETAILED DESCRIPTION
[0017] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.
[0018] like Figure 1 to Figure 4 As shown, the filter cartridge end cover for preventing the filter element from falling off described in the utility model comprises: a circular end cover body 1, a downwardly protruding conical buckle plate 2 is stamped and formed in the middle part of the end cover body 1, the conical buckle plate 2 is coaxial with the end cover body 1, the side wall and the bottom wall of the conical buckle plate 2 are connected by a rounded corner, so as to improve the connection strength between the side wall and the bottom wall of the conical buckle plate 2, a side fixing plate 11 is bent downwardly on the side wall of the end cover body 1, a closing plate 12 is arranged on the side fixing plate 11 and extends inwardly in an inclined manner, the side fixing plate 11 and the closing plate 12 are connected by a smooth transition of a circular arc, and the closing plate 12 extends downward from the conical buckle plate 2.
[0019] When the filter element is mounted on the end cover, the conical buckle plate 2 is inserted into the inner hole of the filter element, and the rounded corners on the conical buckle plate 2 are in contact with the metal mesh in the inner hole of the filter element. When the conical buckle plate 2 supports the filter element, the rounded corners can disperse the reaction force exerted by the metal mesh on the conical buckle plate 2, thereby preventing the conical buckle plate 2 from being damaged due to stress concentration. The closing plate 12 rests on the metal filter mesh on the outer wall of the filter element. Since the conical buckle plate 2 and the closing plate 12 are at different heights, the interaction between the two will play a role of dislocation support for the filter element, thereby improving the supporting strength of the end cover to the filter element, and effectively preventing the filter element from shaking in the end cover.
[0020] Eight downwardly protruding fan-shaped support ribs 31 are stamped along the circumference on the end cover body 1 located between the conical buckle plate 2 and the side fixing plate 11, and four support ribs 31 are spaced apart to form an outer circle, and the arc lengths of the four support ribs 31 forming the outer circle are the same, and another four support ribs 31 are spaced apart to form an inner circle, and the arc lengths of the four support ribs 31 forming the inner circle are the same, and the support ribs 31 in the inner and outer circles are aligned in pairs to form a group of fan-shaped supports 3, and the centers of the two support ribs 31 in each group of fan-shaped supports 3 are concentric, and the center positions of the four groups of fan-shaped supports 3 are different, and the centers of the four groups of fan-shaped supports 3 are connected to form a circle concentric with the end cover body 1.
[0021] It can be seen that the four groups of fan-shaped supports 3 are eccentrically arranged with the end cover body 1 and the conical buckle plate 2, and the four groups of fan-shaped supports 3 are also eccentrically arranged, which can improve the bearing capacity of the end cover when it is impacted and reduce the possibility of deformation of the end cover when it is impacted. When installing the filter element, pour the filter element glue into the end cover, the filter element glue covers the support ribs 31, and then the filter element is inserted into the end cover, the end of the filter element is against the four groups of fan-shaped supports 3, and the two support ribs 31 in each group of fan-shaped supports 3 can The stability between the end of the filter element and the fan-shaped support 3 can be improved. A gap with the same height as the support rib 31 is left between the part of the end of the filter element that is not in contact with the support rib 31 and the end cover body 1. The filter element glue flows into the gap and can cover the end and side walls of the filter element, ensuring that the filter element glue has a strong adhesion strength to the filter element. After the filter element glue is cured, the filter element and the end cover can be adhered. When the filter element or the end cover shakes, the filter element is not prone to degumming because a large amount of filter element glue covers the end of the filter element.
[0022] In this embodiment, the cross-section of the support rib 31 is arc-shaped. When the end of the filter element rests on the support rib 31, the area of the filter element end blocked by the support rib 31 can be minimized, and the area of the filter element end covered by the filter element rubber can be maximized. However, in order to ensure the molding quality of the support rib 31 when stamping the support rib 31 and to ensure the structural strength of the support rib 31 when in use, it is necessary to set the bottom wall of the support rib 31 to a flat bottom wall. In this embodiment, the width of the support rib 31 is 4.5mm~5mm, the height is 2mm~2.5mm, and the width of the flat bottom wall is 0.08mm~0.1mm. The flat bottom wall of this width can ensure that the end of the filter element is in full contact with the filter element rubber.
[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.
Claims
1. The filter cartridge end cap to prevent the filter element from falling off includes: The circular end cover body is characterized in that: a downwardly protruding conical buckle plate is stamped in the middle of the end cover body, a side fixing plate is bent downwardly on the side wall of the end cover body, a closing plate is arranged on the side fixing plate to extend inwardly and tilted, the closing plate extends downward from the conical buckle plate, and a plurality of downwardly protruding supporting ribs are stamped along the circumference on the end cover body located between the conical buckle plate and the side fixing plate.
2. The filter cartridge end cap for preventing the filter element from falling off according to claim 1 is characterized in that: The cross section of the supporting rib is in an arc shape, and the bottom wall of the supporting rib is a flat bottom wall.
3. The filter cartridge end cap for preventing the filter element from falling off according to claim 1 or 2, characterized in that: The support ribs are fan-shaped. Eight support ribs are arranged on the end cover body. Four support ribs are spaced apart to form an outer circle, and the other four support ribs are spaced apart to form an inner circle. The support ribs in the inner and outer circles are aligned in pairs to form a group of fan-shaped supports. The centers of the two support ribs in each group of fan-shaped supports are concentric, and the center positions of the four groups of fan-shaped supports are different.
4. The filter cartridge end cap for preventing the filter element from falling off according to claim 3 is characterized in that: The centers of the four groups of fan-shaped supports are connected to form a circle concentric with the end cover body.
5. The filter cartridge end cap for preventing the filter element from falling off according to claim 1 is characterized in that: The side wall and the bottom wall of the buckle plate are connected with rounded corners.
6. The filter cartridge end cap for preventing the filter element from falling off according to claim 5 is characterized in that: The side fixing plate and the closing plate are connected by a smooth arc transition.