A filter laminate and a laminated filter including the same
By adopting a double-stage filter structure and intermediate convex part in the stacked filter, the problems of large fine filtration load and narrow application range in the prior art are solved, and efficient double-stage filtration effect is achieved, and water production and application range are improved. , and simplifies structural design.
Patent Information
- Application Number
- CN202010198290.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-03-19
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2040-03-19
AI Technical Summary
The existing stacked filters have large loads when they need fine filtration, low cyclic water production, and a narrow application range, so they can only achieve first-level filtration.
Design a filter laminate, adopting a double-stage filter structure, including primary and secondary filter convex parts and groove parts, increase the filter cross-section through corrugated convex parts and groove parts, improve the filter area, enhance the filter effect, and Intermediate convex portions are provided between the laminations to enhance rigidity.
Double-stage filtration is realized, which reduces the fine filtration load, increases the periodic water production, expands the application range, increases the effective filtration area to more than 4 times that of traditional laminates, and has a simple structure and low manufacturing cost.
Smart Images
Figure CN111228878B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a filtering lamination and a filtering device, in particular to a filtering lamination and a lamination filter. Background Art
[0002] The laminated filter is used to filter liquids containing impurities. It can filter out impurities such as mud, rust, microorganisms, suspended matter, colloids, etc. It is mainly used in chemical, petrochemical, smelting, medicine, food, irrigation and other industries.
[0003] The laminated filter mainly consists of a housing, laminated sheets, laminated sheet brackets and other components, among which the laminated sheets are the most important components of the laminated filter. The structure of the laminated sheets plays a decisive role in the filtering effect.
[0004] The laminations in the existing lamination filter are filtered through the filter channels arranged on the laminations, see for example Chinese patent application publication number CN107777741A. The size of the filter channel determines the filtering effect, that is, the larger the size of the filter channel, the worse the filtering effect (coarse filtering), and conversely, the smaller the size, the better the filtering effect (fine filtering). The filter channels on the existing laminations are usually of roughly the same size, so only one-stage filtering can be achieved.
[0005] This has the following defects: when fine filtration is required, the load of fine filtration is large, resulting in a low periodic water production; and the application range of the laminate is narrow. Summary of the invention
[0006] The object of the present invention is to provide a filter stack which achieves a better filtering effect by arranging a double-stage filtration.
[0007] The above technical objectives of the present invention are achieved through the following technical solutions:
[0008] A filter stack, comprising: a stack body, which is a circular ring-shaped sheet; a primary filter convex portion and a secondary filter convex portion arranged on the upper surface of the stack body, wherein the primary filter convex portion and the secondary filter convex portion are radially spaced apart from the outside to the inside; a primary filter groove portion and a secondary filter groove portion are arranged on the lower surface of the stack body, wherein the primary filter groove portion and the secondary filter groove portion are radially spaced apart from the outside to the inside; the positions of the primary filter groove portion and the secondary filter groove portion correspond to the positions of the primary filter convex portion and the secondary filter convex portion on the upper surface of the stack body respectively.
[0009] By adopting the above technical solution, double-stage filtration is achieved and the filtration effect is enhanced.
[0010] Advantageously, both the primary filtering protrusion and the secondary filtering protrusion are corrugated protrusions, extending circumferentially on the upper surface of the laminate body to form a closed body.
[0011] By adopting the above technical solution, the straight section of the corrugated convex part forms a filtering channel, thereby increasing the filtering cross-section compared with the traditional laminated sheets.
[0012] Advantageously, the primary filter protrusion and the secondary filter protrusion are arranged such that within the same central angle range of the laminate body, the number of the peaks and troughs of the primary filter protrusion is less than the number of the peaks and troughs of the secondary filter protrusion.
[0013] By adopting the above technical solution, the filtering cross section of the secondary filtering convex part used for fine filtration is made larger than the filtering cross section of the primary filtering convex part used for coarse filtration, thereby increasing the filtering area of fine filtration and improving the flow rate.
[0014] Advantageously, the primary filtering protrusion and the secondary filtering protrusion protrude at the same height from the surface of the laminate body.
[0015] Advantageously, the primary filter groove portion includes a plurality of primary filter grooves uniformly arranged along the radial direction, and the secondary filter groove portion includes a plurality of secondary filter grooves uniformly arranged along the radial direction, wherein the primary filter groove and the secondary filter groove extend circumferentially as a closed body, and wherein the depth of the primary filter groove is greater than the depth of the secondary filter groove.
[0016] By adopting the above technical solution, the width of the filter groove is utilized to achieve two-level filtration of coarse filtration and fine filtration, and the filter stack has a simple structure and low manufacturing cost.
[0017] Advantageously, the radial width of the primary filter groove is greater than the radial width of the secondary filter groove.
[0018] Advantageously, the filter stack further comprises an intermediate convex portion arranged between the primary filter convex portion and the secondary filter convex portion.
[0019] By adopting the above technical solution, the rigidity of the filter stack is enhanced.
[0020] Advantageously, the height at which the middle protrusion protrudes from the surface of the laminate body is the same as the height at which the primary filter protrusion and the secondary filter protrusion protrude from the surface of the laminate body.
[0021] Another object of the present invention is to provide a laminated filter comprising a plurality of filter laminates stacked together in alignment.
[0022] By adopting the above technical solution, the laminated filter can perform double-stage filtration on the water flow, thereby enhancing the filtering effect and having a simple structure.
[0023] In summary, the beneficial technical effects of the present invention are:
[0024] 1. The filter stack of the present invention greatly reduces the load of fine filtration through double-stage filtration, so that the cycle water production is greatly improved, and the application range of this filter stack is wider;
[0025] 2. The effective filtration area is the area of the straight section of the filter convex part. The filter channel is short, which increases the effective filtration cross-section. The effective filtration area is more than 4 times that of the traditional laminated disc.
[0026] 3. When designing the mold, the mold core on the side with the filter convex part can be fixed. The mold core on the side with the filter groove can be replaced at will, so as to realize multiple products with one mold;
[0027] 4. The annular filter groove is easy to process and the mold processing is highly achievable. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is a top view of the filter stack of the present invention, showing the upper surface of the filter stack;
[0029] Figure 2 is a bottom view of the filter stack of the present invention, showing the lower surface of the filter stack;
[0030] Figure 3 yes Figure 1 The enlarged schematic diagram of the middle part A shows only one primary filter groove and one secondary filter groove schematically; and
[0031] Figure 4 is a perspective view of a laminated filter according to the present invention, showing a plurality of filter laminates stacked together.
[0032] Figure numerals, 1, laminated body; 2, primary filter convex portion; 3, secondary filter convex portion; 4, primary filter groove portion; 5, secondary filter groove portion; 6, primary filter groove; 7, secondary filter groove; 8, pollution receiving groove; 9, middle convex portion; 10, connecting piece; 11, raw water inlet side; 12, coarse filtration channel; 13, coarse filtration water production side; 14, fine filtration water inlet side; 15, fine filtration channel; 16, fine filtration water production side; 17, laminated filter. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention. In the description of the present invention, "upper surface" and "lower surface" are based on the relative positions in the accompanying drawings, which are only for the convenience of describing the structure of the present invention, rather than for limiting the position of the present invention in actual work. In addition, for the description of the orientation, "outer" refers to the orientation away from the center of the circle in the radial direction, while "inner" refers to the orientation close to the center of the circle in the radial direction. The term "peak portion" refers to the most "outer" part of the corrugated component (referring to the primary filter convex portion and the secondary filter convex portion in the present invention) in the radial direction, and the "trough portion" refers to the most "inner" part of the corrugated component in the radial direction.
[0034] like Figure 1 As shown, the stack of the stacked filter of the present invention includes: a stack body 1, which is a circular sheet-shaped body; a primary filter convex portion 2 and a secondary filter convex portion 3 arranged on the upper surface of the stack body 1, wherein the primary filter convex portion 2 and the secondary filter convex portion 3 are radially spaced apart from the outside to the inside; a primary filter groove portion 4 and a secondary filter groove portion 5 are arranged on the lower surface of the stack body 1, wherein the primary filter groove portion 4 and the secondary filter groove portion 5 are radially spaced apart from the outside to the inside, wherein the positions of the primary filter groove portion 4 and the secondary filter groove portion 5 correspond to the positions of the primary filter convex portion 2 and the secondary filter convex portion 3 on the upper surface of the stack body 1, respectively.
[0035] Specifically, Figure 1 , Figure 3 and Figure 4As shown, the primary filter convex portion 2 is a corrugated convex portion, which extends circumferentially on the upper surface of the laminate body 1 as a closed body, and the top surface of the convex portion is flat. Similarly, the secondary filter convex portion 3 is also a corrugated convex portion, which extends circumferentially on the upper surface of the laminate body 1 as a closed body, and the top surface of the convex portion is flat. The height of the primary filter convex portion 2 protruding from the surface of the laminate body 1 is the same as the height of the secondary filter convex portion 3 protruding from the surface of the laminate body 1. The primary filter convex portion 2 is arranged to be radially adjacent to the outer side of the laminate body 1, that is, away from the center of the laminate body 1, while the secondary filter convex portion 3 is arranged to be radially adjacent to the inner side of the laminate body 1, that is, adjacent to the center of the laminate body 1. Within the same central angle range of the laminate body 1, the number of the peak part and the trough part of the primary filter convex portion 2 is less than the number of the peak part and the trough part of the secondary filter convex portion 3. That is to say, within the same central angle range, the number of the peak part and the trough part of the secondary filter convex portion 3 is greater, which is conducive to increasing the filtering area. Preferably, the primary filter convex portion 2 is arranged to have evenly distributed peaks and troughs of the same size. The peaks and troughs of the secondary filter convex portion 3 are also arranged in this way. Figure 1 and Figure 3 As shown, the peak portion of each primary filter convex portion 2 extends to the outer edge of the laminate body 1, and there is a trough portion that does not extend to the inner edge between every two trough portions of the secondary filter convex portion 3 that extend to the inner edge of the laminate body 1. Of course, the primary filter convex portion 2 and the secondary filter convex portion 3 can also be set in other forms as long as the purpose of the present invention can be achieved.
[0036] Specifically, Figure 2 and Figure 3 As shown, the primary filter groove portion 4 is arranged to be radially adjacent to the outer side of the laminate body 1, that is, away from the center of the laminate body 1, and the secondary filter groove portion 5 is arranged to be radially adjacent to the inner side of the laminate body 1, that is, adjacent to the center of the laminate body 1. The position of the primary filter groove portion 4 on the lower surface of the laminate body 1 corresponds to the position of the primary filter convex portion 2 on the upper surface of the laminate body 1, and the position of the secondary filter groove portion 5 on the lower surface of the laminate body 1 corresponds to the position of the secondary filter convex portion 3 on the upper surface of the laminate body 1.
[0037] Specifically, Figure 2As shown, the primary filter groove portion 4 includes a plurality of primary filter grooves 6 uniformly arranged along the radial direction, and the secondary filter groove portion 5 includes a plurality of secondary filter grooves 7 uniformly arranged along the radial direction, and both the primary filter grooves 6 and the secondary filter grooves 7 extend circumferentially to form a closed body. Preferably, the depth of the primary filter groove 6 is greater than the depth of the secondary filter groove 7. The depth represents the filtering accuracy, a deep depth is used for coarse filtration, and a shallow depth is used for fine filtration. Therefore, the primary filter groove portion 4 is used for coarse filtration, and the secondary filter groove portion 5 is used for fine filtration. The depth of the primary filter groove 6 and the secondary filter groove 7 can be selected according to the actual application. For example, the depth of "primary filter groove 6-secondary filter groove 7" can be matched as: 50μm-5μm, or 50μm-10μm, or 100μm-20μm, or 100μm-50μm. The depths of the primary filter groove 6 and the secondary filter groove 7 are uniform. Preferably, as Figure 3 As shown, the radial width of the primary filter groove 6 is greater than the radial width of the secondary filter groove 7. Preferably, the radial widths of the primary filter groove 6 and the secondary filter groove 7 are uniform. The width and height of the primary filter groove 6 and the secondary filter groove 7 can be selected based on the actual needs in this field. Of course, the primary filter groove portion 4 and the secondary filter groove portion 5 can also be set in other forms as long as the purpose of the present invention can be achieved.
[0038] like Figure 3 As shown, when two filter stacks are stacked together, for example, aligned in the vertical direction, the primary filter convex portion 2 and the secondary filter convex portion 3 on the upper surface of the lower stack body 1 are respectively in contact with the primary filter groove 6 and the secondary filter groove 7 on the lower surface of the upper stack body 1. In the contact position, the top of the primary filter convex portion 2 or the secondary filter convex portion 3 forms a filter channel with the bottom of the primary filter groove 6 or the secondary filter groove 7, so as to filter the passing fluid. Of course, the primary filter groove 6 or the secondary filter groove 7 can also play a filtering role through the groove itself at a position where it is not in contact with the primary filter convex portion 2 or the secondary filter convex portion 3.
[0039] As mentioned above, see Figure 1 The primary filter convex portion 2 and the secondary filter convex portion 3 are arranged spaced apart to form a dirt receiving groove 8 therebetween for accommodating impurities intercepted by fine filtration, thereby enabling the filter stack to have the ability to accommodate impurities.
[0040] Preferably, the laminated filter of the present invention further comprises an intermediate convex portion 9 disposed between the primary filter convex portion 2 and the secondary filter convex portion 3, which is used to enhance the rigidity of the laminated filter. As shown in the figure, the intermediate convex portion 9 comprises a plurality of connectors 10. The height of the connectors 10 protruding from the surface of the laminated body 1 is the same as the height of the primary filter convex portion 2 and the secondary filter convex portion 3 protruding from the laminated body 1. Specifically, as Figure 1 and Figure 3 As shown, one end of the connecting member 10 is connected to a trough portion of the primary filtering protrusion 2, and the other end is connected to a peak portion of the secondary filtering protrusion 3. Preferably, as Figure 3 As shown, the trough portion of each primary filtering protrusion 2 is connected to a connecting piece 10 , and a peak portion not connected to the connecting piece 10 is spaced between each two adjacent peak portions of the secondary filtering protrusions 3 connected to the connecting piece 10 .
[0041] Based on the above description, it is easy for a person skilled in the art to design a multi-stage filter stack. For example, a plurality of filter convex portions equal to or more than two levels are provided on the upper surface of the stack body, and a plurality of filter groove portions equal to or more than two levels are provided at corresponding positions on the lower surface of the stack body.
[0042] like Figure 4 As shown, the present invention also relates to a laminated filter 17 comprising the above-mentioned filter laminate. Such a laminated filter is formed by stacking a plurality of filter laminates in alignment.
[0043] When the laminated filter 17 is working, Figure 3 As shown, the fluid to be filtered, such as raw water, will flow from the radial outer side of the filter stack through the gap between two adjacent filter stacks into the raw water inlet side 11, and the raw water will enter the coarse filtration water production side 13, that is, the pollution receiving groove 8 between the primary filter convex part 2 and the secondary filter convex part 3, through the coarse filtration channel 12 formed by the contacting primary filter convex part 2 and the primary filter groove 6. After the primary filtration, the water at the coarse filtration water production side continues to move radially inward to the fine filtration water inlet side 14, and reaches the fine filtration water production side 16 through the fine filtration channel 15 formed by the contacting secondary filter convex part 3 and the secondary filter groove 7, completing the filtration operation.
[0044] The backwashing process of the disc filter is as follows: backwashing water is sprayed at high speed from the inside of the filter disc along the direction of the tangent line of the filter disc, and at the same time, the filter disc is loosened to rotate and evenly separate the filter disc, and the spray water sprays the surface of the filter disc to spray and throw out the impurities trapped on the filter disc. When the backwashing is finished, the water flow direction changes again, the filter disc is compressed again, and the disc filter is ready to re-enter the filtering state.
[0045] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A filter laminate, characterized in that: The filter stack comprises: A lamination body (1) which is a circular lamination body; A primary filtering protrusion (2) and a secondary filtering protrusion (3) are arranged on the upper surface of the laminate body (1), wherein the primary filtering protrusion (2) and the secondary filtering protrusion (3) are spaced apart and arranged radially from the outside to the inside; A primary filter groove portion (4) and a secondary filter groove portion (5) are arranged on the lower surface of the laminate body (1), wherein the primary filter groove portion (4) and the secondary filter groove portion (5) are spaced apart from each other in the radial direction from the outside to the inside; the positions of the primary filter groove portion (4) and the secondary filter groove portion (5) respectively correspond to the positions of the primary filter convex portion (2) and the secondary filter convex portion (3) on the upper surface of the laminate body (1); The primary filtering convex portion (2) and the secondary filtering convex portion (3) are both corrugated convex portions, extending in the circumferential direction on the upper surface of the laminate body (1) to form a closed body; The primary filtering convex portion (2) and the secondary filtering convex portion (3) are arranged such that, within the same central angle range of the laminate body (1), the number of wave crest portions and wave trough portions of the primary filtering convex portion (2) is less than the number of wave crest portions and wave trough portions of the secondary filtering convex portion (3); The filter stack further comprises an intermediate convex portion (9) arranged between the primary filter convex portion (2) and the secondary filter convex portion (3).
2. The filter stack according to claim 1, characterized in that: The primary filtering protrusion (2) and the secondary filtering protrusion (3) protrude from the surface of the laminate body (1) to the same height.
3. The filter stack according to claim 2, characterized in that: The primary filtering groove portion (4) comprises a plurality of primary filtering grooves (6) uniformly arranged along the radial direction. The secondary filtering groove portion (5) comprises a plurality of secondary filtering grooves (7) uniformly arranged along the radial direction. The primary filter groove (6) and the secondary filter groove (7) extend in the circumferential direction to form a closed body, and The depth of the primary filtering groove (6) is greater than the depth of the secondary filtering groove (7).
4. The filter stack according to claim 3, characterized in that: The radial width of the primary filtering groove (6) is greater than the radial width of the secondary filtering groove (7).
5. The filter stack according to claim 1, characterized in that: The height at which the middle convex portion (9) protrudes from the surface of the laminate body (1) is the same as the height at which the primary filtering convex portion (2) and the secondary filtering convex portion (3) protrude from the surface of the laminate body (1).
6. A laminated filter, characterized in that: The invention comprises a plurality of filter stacks as claimed in any one of the preceding claims stacked together in alignment.