Fixing device and method for cartridge filter element

Abstract

The invention belongs to the technical field of water production engineering, and relates to a fixing device and method for a cartridge filter element. Comprising a lower cover plate and an upper cover plate; the lower cover plate comprises a lower cover plate body and a plurality of first blades evenly distributed in the circumferential direction of the outer edge of the lower cover plate body. A first through hole is formed in the center of the lower cover plate main body; a first annular groove is formed in one side of the joint of each first blade and the lower cover plate main body; the upper cover plate comprises a first cover plate and a second cover plate connected with the first cover plate; the first cover plate comprises a first cover plate body and a plurality of second blades evenly distributed in the circumferential direction of the outer edge of the first cover plate body. A second through hole is formed in the center of the first cover plate main body; a second annular groove is formed in one side of the joint of each second blade and the first cover plate main body; a plurality of third through holes are formed in the second cover plate; the mounting and dismounting processes of the filter element are simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment engineering, and relates to a fixing device and method for a filter element of a security filter. Background Art

[0002] With the continuous improvement of the performance of industrial pure water system equipment, water treatment technology has been widely applied in various industrial production processes. Especially in the reverse osmosis (RO) system, the security filter, as its pretreatment equipment, plays a crucial role. The main function of the security filter is to remove suspended solids, particulate impurities, and harmful substances in water by filtering substances, ensure the normal operation of the reverse osmosis system, prevent its membrane components from being contaminated and damaged, thereby extending the service life of the equipment and improving the water treatment efficiency.

[0003] However, although the security filter occupies a core position in the water treatment system, there are multiple technical defects in the existing fixing devices for the security filter element, which to a certain extent affect its maintenance and operation efficiency. The traditional cover plate design is usually bulky and difficult to align, resulting in difficulties in the installation and disassembly processes, and affecting the overall work efficiency. The existing fixing structure is complex, and the installation process requires a large amount of manpower and time, which not only increases the production cost but also affects the convenience of system maintenance and repair. The traditional installation and disassembly methods also have many inconveniences in terms of manual handling. Especially when installing and replacing the filter element, more manual assistance is often required, increasing the safety hazards during the operation process. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the existing technology, and provide a fixing device and method for a security filter element, which simplifies the installation and disassembly processes of the filter element and improves the work efficiency.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a fixing device for a security filter element, including a lower cover plate and an upper cover plate; the upper cover plate is arranged above the lower cover plate; The lower cover plate includes a lower cover plate body and a plurality of first blades evenly distributed circumferentially along its outer edge; a first through hole is arranged at the center of the lower cover plate body; on one side of the connection between each of the plurality of first blades and the lower cover plate body, a first annular groove is arranged, and all the first annular grooves are arranged on the same side of the connection between the first blades and the lower cover plate body; The upper cover plate includes a first cover plate and a second cover plate connected thereto; the first cover plate includes a first cover plate body and a plurality of second blades uniformly distributed circumferentially along its outer edge; a second through hole is provided at the center of the first cover plate body; on one side of the connection between each of the plurality of second blades and the first cover plate body, a second annular groove is provided, and all the second annular grooves are provided on the same side of the connection between the second blades and the first cover plate body; a plurality of cavity structures are formed between the first cover plate and the second cover plate; the number of the cavity structures is the same as the number of the first blades, and the shape and size of each cavity structure are adapted to the corresponding first blade; a plurality of third through holes are provided on the second cover plate.

[0006] Preferably, the shape of the lower cover plate body matches that of the first cover plate body; the shape and size of the first through hole match those of the second through hole.

[0007] Preferably, the first annular groove and the second annular groove cooperate to form a circular groove together.

[0008] Preferably, the sum of the thicknesses of the lower cover plate body and the first cover plate body is equal to the thickness of the first blade or the second blade.

[0009] Preferably, the lower cover plate body and the first cover plate body have the same thickness.

[0010] Preferably, the fixing device is made of stainless steel 304 or stainless steel 306.

[0011] Preferably, a first handle is provided on the first blade.

[0012] Preferably, a second handle is provided on the second blade.

[0013] Preferably, anti-slip patterns are provided on the handles.

[0014] In a second aspect, the present invention provides a fixing method for a filter element of a security filter, including the following steps: Insert the first through hole in the lower cover plate into the filter element at the center of the security filter, rotate the lower cover plate so that the remaining part of the filter element is engaged with the first annular groove, and press down the lower cover plate to fix it; Insert the second through hole in the upper cover plate into the filter element at the center of the security filter, and rotate the upper cover plate so that the filter element engaged with the first annular groove is also engaged with the second annular groove; all the remaining filter elements are inserted into the third through holes, and press down the upper cover plate to fix it, so that the lower cover plate body and the first cover plate body are fixedly connected by means of upper and lower docking, and the first blade is fitted and connected with the cavity structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention fixes the central filter element through the first through-hole and the second through-hole; forms a complementary locking structure by the partial matching of the second annular groove and the first annular groove to fix the middle surrounding filter element; fixes the remaining filter elements through the third through-hole to achieve the fixation of the filter elements. At the same time, the present invention adopts a split upper and lower cover plates, so that only the actions of "aligning up and down - pressing and fixing" are required during fixation to complete the installation, simplifying the filter element fixation process and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a plan view of the lower cover plate; Figure 2 is a sectional view of the lower cover plate; Figure 3 is a plan view of the upper cover plate; Figure 4 is a sectional view of the upper cover plate; Figure 5 is a plan view of the fixing device of the present invention.

[0018] Wherein: 1. Lower cover plate; 11. Lower cover plate main body; 111. First through-hole; 12. First blade; 121. First annular groove; 2. Upper cover plate; 21. First cover plate main body; 211. Second through-hole; 22. Second blade; 221. Second annular groove; 311. Third through-hole; 312. Cavity structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0024] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] The following further describes the present invention in detail with reference to the figures: The first object of the present invention is to provide a fixing device for a security filter element, including a lower cover plate 1 and an upper cover plate 2; the upper cover plate 2 is arranged above the lower cover plate 1; the split lower cover plate 1 and upper cover plate 2 are fixed by an up-and-down matching method. During operation, only alignment and downward pressing in sequence are required to complete the installation, which simplifies the complex operation process of the traditional integral cover plate and significantly improves the maintenance efficiency.

[0026] Such as Figure 1 and Figure 2As shown, the lower cover plate 1 includes a lower cover plate main body 11 and a plurality of first vanes 12 evenly distributed circumferentially along its outer edge; a first through hole 111 is provided at the center of the lower cover plate main body 11; a first annular groove 121 is provided on one side of the connection between each of the plurality of first vanes 12 and the lower cover plate main body 11, and the first annular grooves 121 are all provided on the same side of the connection between the first vanes 12 and the lower cover plate main body 11; the first through hole 111 is used to sleeved on the filter element at the center of the security filter, and is clamped with the rest of the filter element through the first annular groove 121 to achieve preliminary positioning.

[0027] As Figure 3 and Figure 4 As shown, the upper cover plate 2 includes a first cover plate and a second cover plate connected thereto; the first cover plate includes a first cover plate main body 21 and a plurality of second vanes 22 evenly distributed circumferentially along its outer edge; a second through hole 211 is provided at the center of the first cover plate main body 21; a second annular groove 221 is provided on one side of the connection between each of the plurality of second vanes 22 and the first cover plate main body 21, and the second annular grooves 221 are all provided on the same side of the connection between the second vanes 22 and the first cover plate main body 21; a plurality of cavity structures 312 are formed between the first cover plate and the second cover plate; the number of the cavity structures 312 is the same as the number of the first vanes 12, and the shape and size of each cavity structure 312 are adapted to the corresponding first vane 12; a plurality of third through holes 311 are provided on the second cover plate.

[0028] The second annular groove 221 on the first cover plate cooperates with the first annular groove 121 of the lower cover plate 1 to jointly form a circular groove, forming a complementary locking structure to further lock the position of the filter element. The third through holes 311 of the second cover plate accommodate the remaining filter elements to ensure that all filter elements are covered and eliminate the fixing blind area. By precisely matching the shape of the lower cover plate main body 11 with the first cover plate main body 21 and ensuring the correspondence consistency between the first through hole 111 and the second through hole 211, the precise alignment installation of the upper and lower cover plates is achieved, which not only simplifies the assembly process and enables the operator to quickly complete the centering positioning, but more importantly, eliminates the axial deviation problem that may occur in the traditional installation process, significantly improving the stability and sealing reliability of the overall structure. In addition, the cavity structure 312 also provides a directional accommodation space for the first vane 12 to ensure the precise alignment during the combination of the upper and lower cover plates and effectively prevent the installation misalignment.

[0029] Exemplarily, the number and position of the grooves and through holes can be adjusted according to the actual situation, so as to meet the filter element layouts of different quantities and specifications and expand the applicable range of the device.

[0030] The sum of the thicknesses of the lower cover body 11 and the first cover body 21 is equal to the thickness of the first blade 12 or the second blade 22, and the thicknesses of the lower cover body 11 and the first cover body 21 are equal; this enables the upper and lower covers to be completely flush when fixedly connected, not only forming a perfect mechanical fit, eliminating the common step difference problem in traditional structures, but also ensuring uniform stress on the sealing surface. At the same time, the flush upper and lower surfaces facilitate operation and positioning during installation and maintenance, and also enhance the aesthetics and industrial applicability of the overall structure.

[0031] The fixing device is made of stainless steel 304 or stainless steel 306. Both have excellent corrosion resistance and can resist the erosion of water vapor, chemical agents, and acid-base media for a long time, making them particularly suitable for humid and corrosive environments; their high mechanical strength ensures that they do not deform under high-pressure conditions and can reliably fix the filter element.

[0032] A first handle is provided on the first blade 12, and a second handle is provided on the second blade 22, enabling the operator to easily grasp and firmly hold the blade. Even when the blade is large in volume or heavy in weight, it can effectively reduce the physical burden during handling.

[0033] Anti-slip patterns are provided on the handles. By increasing the surface friction coefficient, it effectively prevents the hand from slipping during operation, ensuring a firm grip even in wet, oily, or gloved conditions, and greatly improving operation safety.

[0034] The second object of the present invention is to provide a method for fixing a filter element of a security filter, including the following steps: Insert the first through-hole 111 in the lower cover 1 into the filter element at the center of the security filter, rotate the lower cover 1 so that the remaining part of the filter element is engaged with the first annular groove 121, and press down the lower cover 1 to fix it; Insert the second through-hole 211 in the upper cover 2 into the filter element at the center of the security filter, and rotate the upper cover 2 so that the filter element engaged with the first annular groove 121 is also engaged with the second annular groove 221; the remaining filter element is completely inserted into the third through-hole 311, and press down the upper cover 2 to fix it, so that the lower cover body 11 and the first cover body 21 are fixedly connected by means of upper and lower docking, and the first blade 12 is fitted and connected with the cavity structure 312, as Figure 5 shown. It should be noted that when the upper and lower covers are aligned and connected, sufficient operating space for a wrench or hand to fix the position is left during installation for both parts, facilitating the operator to use tools for tightening and avoiding the risk of installation difficulties or component damage due to insufficient operating space.

[0035] The present invention adopts a split structure of an independent lower cover plate 1 and an upper cover plate 2, and the installation can be completed through a simple "align up and down - press and fix" action, without the need for complex tools or bolt fastening. Compared with the traditional integral cover plate, the installation time is significantly shortened, especially suitable for scenarios where the filter element needs to be replaced frequently (such as the pharmaceutical and chemical industries), and the split design allows for the replacement of damaged components separately, avoiding overall scrapping and reducing maintenance costs. The present invention forms a three-dimensional fixed network of "center - middle perimeter - full coverage". Through the positioning of the central through holes (the first through hole 111 and the second through hole 211), the central filter element is accurately sleeved to ensure that the device is aligned with the central axis of the filter. The first annular groove 121 is engaged with the middle perimeter filter element to form a preliminary fixation, restricting the radial displacement of the filter element. Then, the second annular groove 221 and the first annular groove 121 cooperate to form a circular groove, forming a complementary locking structure to further eliminate the shaking space of the filter element. The remaining filter element is accommodated through the third through hole 311 to ensure that all filter elements are physically constrained (full coverage), eliminating the problem of loose fixation of the edge filter elements in the traditional design.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fixing device for a security filter element, characterized in that, It includes a lower cover plate (1) and an upper cover plate (2); the upper cover plate (2) is arranged above the lower cover plate (1). The lower cover plate (1) includes a lower cover plate main body (11) and a plurality of first vanes (12) evenly distributed circumferentially along its outer edge; a first through hole (111) is arranged at the center of the lower cover plate main body (11); on one side of the connection between each of the plurality of first vanes (12) and the lower cover plate main body (11), a first annular groove (121) is arranged, and all the first annular grooves (121) are arranged on the same side of the connection between the first vanes (12) and the lower cover plate main body (11). The upper cover plate (2) includes a first cover plate and a second cover plate connected thereto; the first cover plate includes a first cover plate main body (21) and a plurality of second vanes (22) evenly distributed circumferentially along its outer edge; a second through hole (211) is arranged at the center of the first cover plate main body (21); on one side of the connection between each of the plurality of second vanes (22) and the first cover plate main body (21), a second annular groove (221) is arranged, and all the second annular grooves (221) are arranged on the same side of the connection between the second vanes (22) and the first cover plate main body (21); a plurality of cavity structures (312) are formed between the first cover plate and the second cover plate; the number of the cavity structures (312) is the same as the number of the first vanes (12), and the shape and size of each cavity structure (312) are adapted to the corresponding first vane (12); a plurality of third through holes (311) are arranged on the second cover plate.

2. The fixing device for the filter element of the security filter according to claim 1, characterized in that, The shape of the lower cover plate main body (11) matches that of the first cover plate main body (21); the shape and size of the first through hole (111) match those of the second through hole (211).

3. A fixing device for a filter element of a security filter according to claim 1, characterized in that, The first annular groove (121) and the second annular groove (221) cooperate with each other to jointly form a circular groove.

4. The fixing device for a security filter element according to claim 1, characterized in that, The sum of the thicknesses of the lower cover plate main body (11) and the first cover plate main body (21) is equal to the thickness of the first vane (12) or the second vane (22).

5. A fixing device for a filter element of a security filter according to claim 4, characterized in that, The thicknesses of the lower cover plate main body (11) and the first cover plate main body (21) are equal.

6. The fixing device for a security filter element according to claim 1, characterized in that, The fixing device is made of stainless steel 304 or stainless steel 306.

7. A fixing device for a security filter element according to claim 1, characterized in that, A first handle is arranged on the first vane (12).

8. A fixing device for a filter element of a security filter according to claim 1, characterized in that, A second handle is arranged on the second vane (22).

9. A fixing device for a security filter element according to claim 7 or 8, characterized in that, Anti-slip patterns are arranged on the handles.

10. A fixing method for a filter element of a security filter, characterized in that, Using the fixing device according to any one of claims 1 to 9, it includes the following steps: Put the first through hole (111) in the lower cover plate (1) over the filter element at the center of the security filter, rotate the lower cover plate (1) so that the rest of the filter element is clamped with the first annular groove (121), and press down the lower cover plate (1) for fixation. Insert the second through-hole (211) in the upper cover plate (2) over the filter element at the center of the security filter, and rotate the upper cover plate (2) so that the filter element engaged with the first annular groove (121) is also engaged with the second annular groove (221); insert all the remaining filter elements into the third through-hole (311), and press down and fix the upper cover plate (2) so that the lower cover plate body (11) and the first cover plate body (21) are fixedly connected by means of upper and lower butt-joint, and the first blade (12) is fitted and connected with the cavity structure (312).

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