Filter stack and filter

Abstract

The present invention relates to the technical field of laminated filters, and in particular to a filter laminate and a filter. The filter laminate provided by the present invention comprises: a laminate body, a plurality of flow guides and a flow channel structure. The flow guides are distributed in an array on the laminate body along a first direction and a second direction, and are arranged along the surface protrusions of the laminate body, and two adjacent flow guides are arranged at intervals; the shortest distance between two adjacent flow guides in the second direction is a first spacing, and the shortest distance between two adjacent flow guides in the second direction of the next group in the first direction is a second spacing, and the first spacing is greater than the second spacing; the flow channel structure comprises a plurality of first flow channels and a plurality of second flow channels arranged in an alternating manner, the first flow channel is extended along the first direction and arranged between two adjacent flow guides in the second direction, and the second flow channel is extended along the second direction and arranged between two adjacent flow guides along the first direction, thereby improving the filtering efficiency of the filter laminate.

Description

Technical Field

[0001] The invention relates to the technical field of laminated filters, and in particular to a filter laminate and a laminated filter. Background Art

[0002] The laminated filter is a device used to filter liquids containing impurities, especially in the field of agricultural irrigation, where a filter is required at the head of the drip irrigation system. The filter is used to remove various impurities in the irrigation water to prevent the impurities from clogging the equipment at all levels, and even causing the entire micro-irrigation system to be paralyzed and scrapped.

[0003] The laminated filter consists of a housing and filter laminates. Multiple filter laminates are stacked along the height direction of the housing so that the groove edges on the connecting surfaces of adjacent filter laminates form multiple intersections, which form a large number of cavities and irregular passages. Water flows into the filter through the filter inlet and passes through the filter laminates. The filter laminates are tightly pressed together under the action of spring force and water force when passing through the filter laminates. Impurity particles are trapped at the intersection of the laminates, and the filtered water flows out from the main channel of the filter.

[0004] In the traditional disc filter stack, water flows from outside to inside along the radial direction of the filter stack during use, and the water moves along the gaps on the disc. By gradually reducing the gaps on the disc from outside to inside along the radial direction of the filter stack, impurities of different diameters can be filtered. However, the head loss is large and the filtering efficiency is low. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of large head loss and low filtering efficiency of the filter stack in the prior art, thereby providing a filter stack and a filter.

[0006] In order to solve the above problems, the present invention provides a filter stack, comprising:

[0007] A laminate body, the laminate body having a water inlet and a water outlet;

[0008] A plurality of flow guides are arranged in an array on the laminate body along a first direction and a second direction, the first direction and the second direction are arranged at an angle, and the flow guides have a positive component along the direction from the water inlet to the water outlet in the first direction, and the flow guides are arranged along the surface protrusion of the laminate body; wherein, in the first direction, two adjacent flow guides are arranged at intervals, and in the second direction, two adjacent flow guides are arranged at intervals; the shortest distance between two adjacent flow guides in the second direction is a first spacing, and the shortest distance between two adjacent flow guides in the next group in the first direction is a second spacing, and the first spacing is greater than the second spacing;

[0009] A flow channel structure, comprising a plurality of first flow channels and a plurality of second flow channels, wherein the first flow channels are extended along a first direction and arranged between two adjacent flow guides in a second direction, and the second flow channels are extended along the second direction and arranged between two adjacent flow guides in the first direction, and the first flow channels and the second flow channels are staggered;

[0010] Driven by external force, external water is transported from the water inlet to the first flow channel and flows to the water outlet; and / or, external water is transported from the water inlet to the first flow channel and flows through the second flow channel along the first flow channel to the water outlet.

[0011] Optionally, the lamination body is an annular lamination;

[0012] The water inlet is formed on the outer ring of the annular lamination, and the water outlet is formed on the inner ring of the annular lamination;

[0013] The first direction is set at an angle with the radial direction of the annular stack; the second direction is the circumferential direction along the concentric circle of the annular stack body.

[0014] Optionally, the first direction forms an angle of 0-25 degrees with the radial direction of the annular lamination.

[0015] Optionally, along the first direction, the cross-sectional size of the flow guide gradually decreases;

[0016] The cross-sectional size reduction coefficient m is the ratio of the cross-sectional size of one of the flow guide members to the cross-sectional size of the next adjacent flow guide member along the first direction; the value range of the cross-sectional size reduction coefficient m is: 0.89<m<1.00.

[0017] Optionally, the reduction difference x is the difference between the first spacing and the second spacing, and the value range of the reduction difference x is: 0.02mm<x<0.20mm.

[0018] Optionally, the flow guide is an isosceles triangle boss, the end points of the isosceles triangle boss are chamfered, two sides of any one of the isosceles triangle bosses are respectively connected to the first flow channel, and the bottom side of any one of the isosceles triangle bosses is connected to the second flow channel;

[0019] Among them, the top angle of the isosceles triangle boss is arranged close to the water inlet side, and the base of the isosceles triangle boss is arranged close to the water outlet side; and the base is connected to the second flow channel; and / or, the base of the isosceles triangle boss is arranged close to the water inlet side; the top angle of the isosceles triangle boss is arranged close to the water outlet side.

[0020] Optionally, the laminate body is provided in a plurality of groups, and the plurality of groups of laminate bodies are stacked in a direction perpendicular to the laminate body.

[0021] Optionally, it further includes: a plurality of connecting structures, which are arranged on the laminate body, and the connecting structures are used to connect two adjacent laminate bodies arranged in a stacked manner.

[0022] The filter stack is characterized in that the connecting structure is a connecting hole, which is arranged between two adjacent flow guide members along the second direction, and the connecting hole is a circular through hole, and the diameter of the circular connecting hole is a first size, and the first size is equal to the shortest distance between two adjacent flow guide members along the second direction.

[0023] A filter comprises the filter stack.

[0024] The present invention has the following advantages:

[0025] 1. The present invention provides a filter laminate, comprising: a laminate body, a plurality of flow guides and a flow channel structure. The laminate body has an inlet and an outlet; the flow guides are distributed in an array on the laminate body along a first direction and a second direction, the first direction and the second direction are arranged at an angle, and the direction from the inlet to the outlet has a positive component with the first direction, and the flow guides are arranged along the surface protrusions of the laminate body; wherein, along the first direction, two adjacent flow guides are arranged at intervals, and along the second direction, two adjacent flow guides are arranged at intervals; the shortest distance between two adjacent flow guides in the second direction is a first spacing, and the next group of two adjacent flow guides in the second direction along the first direction is a first spacing. The shortest distance between them is the second spacing, and the first spacing is greater than the second spacing; the flow channel structure includes a plurality of first flow channels and a plurality of second flow channels, the first flow channel is extended along the first direction and is arranged between two adjacent guide members in the second direction, the second flow channel is extended along the second direction and is arranged between two adjacent guide members along the first direction, and the first flow channel and the second flow channel are staggered; driven by external force, external water is transported from the water inlet to the first flow channel and flows to the water outlet; and external water is transported from the water inlet to the first flow channel and flows out to the water outlet along the first flow channel after passing through the second flow channel.

[0026] In the filter stack of this structure, external water flows from the water inlet through the flow channel structure and then flows out from the water outlet. In this process, water-insoluble impurities in the external water will pass through the first spacing and the second spacing. When the cross-sectional area of ​​the impurities is greater than or equal to the first spacing or the second spacing, they will be separated at the guide member by the first spacing or the second spacing. Along the first direction, the shortest distance between two adjacent guide members in the second direction gradually decreases. By gradually reducing the shortest distance between two adjacent guide members, impurities with different cross-sections can be filtered. The first flow channel and the second flow channel staggered in the flow channel structure can provide more flow channel options for external water, thereby improving the filtration efficiency and reducing the filtration time.

[0027] 2. The present invention provides a filter stack, wherein the cross-sectional dimensions of a flow guide member gradually decrease along a first direction; wherein a cross-sectional dimension reduction coefficient m is a ratio of a cross-sectional dimension of a flow guide member to a cross-sectional dimension of an adjacent next flow guide member along the first direction; and a value range of the cross-sectional dimension reduction coefficient m is: 0.89<m<1.00.

[0028] In the filter stack of this structure, the interval between two adjacent flow guide members in the first direction and the second direction is reduced. This structure ensures that the flow guide members can be arranged at intervals along the first direction on the annular stack.

[0029] 3. The present invention provides a filter laminate, comprising: a flow guide member which is an isosceles triangle boss, and the end points of the isosceles triangle boss are chamfered.

[0030] The filter stack of this structure and the isosceles triangle bosses can reduce the contact between the water flow and the bosses, reduce the head loss along the way, and form turbulence after the water flows through the bosses. Appropriate turbulence is conducive to sediment deposition and improves the filtering performance. Through this structure, stepped filtration can be formed on the flow channel structure, and when the flow channel structure is blocked, the water flow can be filtered to other flow channels through the second flow channel, reducing the pressure mutation caused by blockage. The channel structure not only ensures a straight flow channel, but also forms multi-stage filtration, which increases the scope of application. Compared with the straight channel, a larger sediment deposition area is formed, further improving the filtering effect.

[0031] 4. The present invention provides a filter stack, further comprising: a plurality of connecting structures, arranged on the stack body, the connecting structures being used to connect two adjacent stacked stack bodies.

[0032] The filter stack of this structure can connect the channels of two adjacent stacked stack bodies in series by providing a connecting structure on each stack body, thereby increasing more flow channels and the distribution direction of external water, improving the anti-clogging performance of the stack body, reducing the clogging time, extending the filtration time, and improving the filtration efficiency of the stack body.

[0033] 5. The present invention provides a filter stack, wherein the connecting structure is a connecting hole, which is arranged between two adjacent flow guide members along the second direction, and the connecting hole is a circular through hole, and the diameter of the circular connecting hole is a first size, and the first size is equal to the shortest distance between two adjacent flow guide members along the second direction.

[0034] The filter stack of this structure can ensure that when the flow channel structure on the upper stack body is blocked, it can enter the lower stack body through the connecting hole, thereby reducing the occurrence of blockage of the flow channel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the main structure of the filter stack provided in Example 1 of the present invention;

[0037] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure at A in the middle;

[0038] Figure 3 A schematic diagram of a partial main structure of a filter stack provided in Example 1 of the present invention;

[0039] Figure 4 A schematic diagram of the installation structure of the filter stack provided in Example 1 of the present invention;

[0040] Description of reference numerals:

[0041] 1-laminated body;

[0042] 2-Flow guide

[0043] 3-flow channel structure; 31-first flow channel; 32-second flow channel;

[0044] 4- Communication hole;

[0045] D-first distance; D'-second distance. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described clearly and completely 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 of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] Example 1

[0051] This embodiment provides a filter stack, such as Figures 1 to 4As shown, it comprises: a laminate body 1, a plurality of flow guides 2 and a flow channel structure 3. The laminate body 1 has a water inlet and a water outlet; the flow guides 2 are distributed in an array on the laminate body 1 along a first direction and a second direction, the first direction and the second direction are arranged at an angle, and have a positive component along the direction from the water inlet to the water outlet and the first direction, and the positive component refers to the flow direction of the external water moving from the water inlet through the flow guide 2 to the side close to the water outlet; the flow guide 2 is arranged along the surface protrusion of the laminate body 1; wherein, along the first direction, two adjacent flow guides 2 are arranged at intervals, and along the second direction, two adjacent flow guides 2 are arranged at intervals; the shortest distance between two adjacent flow guides 2 in the second direction is the first spacing, and the next group of flow guides 2 in the first direction is the first spacing. The shortest distance between two adjacent flow guide members 2 is the second spacing, and the first spacing is greater than the second spacing; the flow channel structure 3 includes a plurality of first flow channels 31 and a plurality of second flow channels 32, the first flow channel 31 is extended along the first direction and is arranged between two adjacent flow guide members 2 in the second direction, the second flow channel 32 is extended along the second direction and is arranged between two adjacent flow guide members 2 along the first direction, and the first flow channel 31 and the second flow channel 32 are staggered; driven by external force, external water is transported from the water inlet to the first flow channel 31 and flows to the water outlet; and external water is transported from the water inlet to the first flow channel 31 and flows out to the water outlet along the first flow channel 31 after passing through the second flow channel 32.

[0052] In the filter stack of this structure, external water flows from the water inlet through the flow channel structure 3 and then flows out from the water outlet. In this process, the water-insoluble impurities in the external water will pass through the first spacing and the second spacing. When the cross-sectional area of ​​the impurities is greater than or equal to the first spacing or the second spacing, they will be separated at the guide member 2 by the first spacing or the second spacing. Along the first direction, the shortest distance between two adjacent guide members 2 in the second direction gradually decreases. By gradually reducing the shortest distance between two adjacent guide members 2, impurities with different cross-sections can be filtered. The first flow channel 31 and the second flow channel 32 staggered in the flow channel structure 3 can provide more flow channel options for external water, thereby improving the filtration efficiency and reducing the filtration time.

[0053] like Figures 1 to 4As shown, in this embodiment, both sides of the laminate body 1 are arrayed with a plurality of guide members 2, and in other embodiments, one side of the laminate body 1 is arrayed with a plurality of guide members 2; specifically, the installation position of the guide member 2 is not limited, and it only needs to be selected according to actual needs. After the external water flows into two adjacent guide members 2 along the second direction through the first flow channel 31, the impurities greater than or equal to the minimum distance of the guide members 2 will be blocked to the wider sediment deposition area between the two adjacent guide members 2, and the filtered external water will flow into the next group of guide members 2 along the first direction; in other embodiments, when this position is blocked by more impurities, the external water will flow through the guide member 2 to the second channel and flow into the next group of guide members 2; specifically, the flow channel of the external water is not limited, and it only needs to be selected according to actual needs.

[0054] like Figures 1 to 4 As shown, in this embodiment, the laminate body 1 is an annular laminate, the water inlet portion is formed on the outer ring of the annular laminate, and the water outlet portion is formed on the inner ring of the annular laminate; wherein the first direction is set at an angle to the radial direction of the annular laminate; and the second direction is the circumferential direction along the concentric circle of the annular laminate body 1.

[0055] like Figures 1 to 4 As shown, in this embodiment, the first direction forms an angle of 12 degrees with the radial direction of the annular stack; in other embodiments, the first direction forms an angle of 20 degrees with the radial direction of the annular stack. Specifically, the angle between the first direction and the radial direction of the annular stack is not limited, as long as the first direction and the radial direction of the annular stack form an angle of 0-25 degrees; the angle between the first direction and the radial direction of the annular stack can block impurities in the external water, thereby achieving a filtering effect.

[0056] like Figures 1 to 4As shown, in this embodiment, the cross-sectional size of the guide member 2 gradually decreases along the first direction; wherein the cross-sectional size reduction coefficient m is the ratio of the cross-sectional size of one guide member 2 to the cross-sectional size of the next adjacent guide member 2 along the first direction; the value range of the cross-sectional size reduction coefficient m is: 0.89<m<1.00. There are nine rows of guide members 2 from the water inlet to the water outlet. Along the first direction, the scaling ratio of the second row of guide members 2 relative to the first row of guide members 2 is 0.98; the scaling ratio of the third row of guide members 2 relative to the first row of guide members 2 is 0.96; the scaling ratio of the fourth row of guide members 2 relative to the first row of guide members 2 is 0.94; the scaling ratio of the fifth row of guide members 2 and the sixth row of guide members 2 relative to the first row of guide members 2 is 0.92; the scaling ratio of the seventh row of guide members 2 relative to the first row of guide members 2 is 0.90; the scaling ratio of the eighth row of guide members 2 and the ninth row of guide members 2 relative to the first row of guide members 2 is 0.89; in other embodiments, along the first direction, the scaling ratio of the rear row of guide members 2 relative to the first row of guide members 2 may be other numbers. Specifically, it is only necessary to ensure that the scaling ratio of the rear row of guide members 2 is less than or equal to the scaling ratio of the front row of guide members 2.

[0057] like Figures 1 to 4As shown, in this embodiment, the reduction difference x is the difference between the first spacing and the second spacing, and the range of the reduction difference x is: 0.02mm<x<0.20mm. Along the second direction, 153 guide members 2 are arranged per week. The shortest distance between two adjacent guide members 2 in the first row is 0.20 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.20 mm or other particle sizes, and the filtered impurities are deposited in the sediment deposition area at the wider part of the two adjacent guide members 2. The shortest distance between two adjacent guide members 2 in the second row is 0.18 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.18 mm or other particle sizes, and the filtered impurities are deposited in the sediment deposition area at the wider part of the two adjacent guide members 2. The shortest distance between two adjacent guide members 2 in the third row is 0.16 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.16 mm or other particle sizes, and the filtered impurities are deposited in the sediment deposition area at the wider part of the two adjacent guide members 2. The shortest distance between two adjacent guides 2 in the fourth row is 0.14 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.14 mm or other particle sizes, and the filtered impurities are deposited in the sediment deposition area at the wider part of the two adjacent guides 2. The shortest distance between two adjacent guides 2 in the fifth row is 0.12 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.12 mm or other particle sizes, and the filtered impurities are deposited in the sediment deposition area at the wider part of the two adjacent guides 2. The shortest distance between two adjacent guides 2 in the sixth row is 0.09 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.09 mm or other particle sizes, and the filtered impurities are deposited in the sediment deposition area at the wider part of the two adjacent guides 2. The shortest distance between two adjacent guides 2 in the seventh row is 0.07 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.07 mm or other particle sizes, and the filtered impurities are deposited in the sediment deposition area at the wider part of the two adjacent guides 2. The shortest distance between two adjacent guide members 2 in the eighth row is 0.05 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.05 mm or other particle sizes, and the filtered impurities are deposited in the silt deposition area at the wider part of the two adjacent guide members 2. The shortest distance between two adjacent guide members 2 in the ninth row is 0.02 mm; this row mainly intercepts impurities with a particle size greater than or equal to 0.02 mm or other particle sizes, and the filtered impurities are deposited in the silt deposition area at the wider part of the two adjacent guide members 2. Along the second direction, the shortest distance between two adjacent guide members 2 arranged in the front and rear rows gradually decreases. Through this arrangement, impurities can be blocked between two adjacent guide members 2 according to the cross-sectional size, thereby achieving filtration of external water.

[0058] like Figures 1 to 4As shown, in this embodiment, the flow guide 2 is an isosceles triangular boss, and the end points of the isosceles triangular boss are chamfered. The two sides of any isosceles triangular boss are respectively connected to the first flow channel 31, and the bottom side of any isosceles triangular boss is connected to the second flow channel 32; the height of the isosceles triangular boss is 0.23 mm; the first circle, that is, the outermost circle of the isosceles triangular boss is a regular triangle with a side length of 1 mm, and the chamfer size is 0.2 mm. Along the first direction, the side length and the chamfer size of the isosceles triangular boss gradually decrease, and the height of the isosceles triangular boss remains unchanged. Among them, the top angle of the isosceles triangle boss is arranged close to the water inlet side, and the bottom edge of the isosceles triangle boss is arranged close to the water outlet side; and the bottom edge is connected to the second flow channel 32; through this arrangement, the contact surface between the external water and the guide member 2 will be reduced to the side of the isosceles triangle, thereby reducing the contact between the water flow and the guide member 2, thereby reducing the head loss along the way; in other embodiments, the bottom edge of the isosceles triangle boss is arranged close to the water inlet side; the top angle of the isosceles triangle boss is arranged close to the water outlet side; through this arrangement, large particles of impurities in the external water will be blocked, thereby avoiding the occurrence of large particles of impurities blocking the laminated body 1; specifically, there is no restriction on the placement position of the isosceles triangle boss, and it only needs to be selected according to the actual use environment.

[0059] like Figure 4 In the embodiment, the laminated bodies 1 are provided with multiple groups, and the multiple groups of laminated bodies 1 are stacked in a direction perpendicular to the laminated bodies 1. By providing multiple groups of laminated bodies 1, multiple groups of flow channels can be formed, thereby increasing the circulation and filtering speed of external water. The laminated bodies 1 are provided with multiple groups, and the multiple laminated bodies 1 are stacked in a third direction, that is, the axial direction of the laminated bodies 1; specifically, the number of the laminated bodies 1 can be selected according to actual use requirements.

[0060] like Figures 1 to 4 As shown, in this embodiment, it also includes: a plurality of connecting structures, which are arranged on the stacked body 1, and the connecting structures are used to connect two adjacent stacked stacked bodies 1, so as to increase the flow channel between the upper and lower stacked bodies 1. When the filtration amount of the stacked body 1 becomes smaller due to the blockage of the flow channel, the external water can flow into the adjacent upper and lower stacked bodies 1 through the connecting structure, thereby achieving the effect of increasing the connection between the adjacent stacked bodies 1, thereby improving the filtration efficiency.

[0061] like Figures 1 to 4As shown, in this embodiment, the connecting structure is a connecting hole 4, which is arranged between two adjacent flow guides 2 along the second direction, and the connecting hole 4 is a circular through hole, and the diameter of the circular connecting hole 4 is a first size, and the first size is equal to the shortest distance between two adjacent flow guides 2 along the second direction. The number of circular through holes is 18, and the 18 circular through holes are respectively distributed in an array on the laminate body 1 along the first direction and the second direction. In other embodiments, the number of circular through holes is 16; in addition, in other embodiments, the number of circular through holes is 20; specifically, the number of circular through holes is not limited, and it only needs to be selected according to the actual use environment requirements.

[0062] Example 2

[0063] This embodiment provides a filter, including the filter stack provided in Embodiment 1.

[0064] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A filter laminate, characterized in that: include: A laminate body (1), wherein the laminate body (1) has a water inlet and a water outlet; A plurality of flow guides (2) are arranged in an array on the laminate body (1) along a first direction and a second direction, the first direction and the second direction are arranged at an angle, and have a positive component in the direction from the water inlet to the water outlet in the first direction, and the flow guides (2) are arranged protruding along the surface of the laminate body (1); wherein, in the first direction, two adjacent flow guides (2) are arranged at intervals, and in the second direction, two adjacent flow guides (2) are arranged at intervals; the shortest distance between two adjacent flow guides (2) in the second direction is a first spacing, and the shortest distance between two adjacent flow guides (2) in the second direction in the next group in the first direction is a second spacing, and the first spacing is greater than the second spacing; A flow channel structure (3), comprising a plurality of first flow channels (31) and a plurality of second flow channels (32), wherein the first flow channels (31) are arranged to extend along a first direction and are arranged between two adjacent flow guide members (2) in a second direction, and the second flow channels (32) are arranged to extend along the second direction and are arranged between two adjacent flow guide members (2) in the first direction, and the first flow channels (31) and the second flow channels (32) are arranged in an alternating manner; Driven by an external force, external water is transported from the water inlet to the first flow channel (31) and flows toward the water outlet; and / or, external water is transported from the water inlet to the first flow channel (31) and flows through the second flow channel (32) and then flows out along the first flow channel (31) toward the water outlet.

2. The filter stack according to claim 1, characterized in that: The lamination body (1) is an annular lamination; The water inlet is formed on the outer ring of the annular lamination, and the water outlet is formed on the inner ring of the annular lamination; The first direction is arranged at an angle with the radial direction of the annular lamination; and the second direction is a circumferential direction along a concentric circle of the annular lamination body (1).

3. The filter stack according to claim 2, characterized in that: The first direction forms an angle of 0-25 degrees with the radial direction of the annular lamination.

4. The filter stack according to claim 1, characterized in that: Along the first direction, the cross-sectional size of the flow guide (2) gradually decreases; The cross-sectional dimension reduction coefficient m is the ratio of the cross-sectional dimension of one of the flow guide members (2) to the cross-sectional dimension of the next adjacent flow guide member (2) along the first direction; the value range of the cross-sectional dimension reduction coefficient m is: 0.89<m<1.

00.

5. The filter stack according to claim 1, characterized in that: The reduction difference x is the difference between the first spacing and the second spacing, and the value range of the reduction difference x is: 0.02mm<x<0.20mm.

6. The filter stack according to claim 1, characterized in that: The flow guide (2) is an isosceles triangular boss, the end points of the isosceles triangular boss are chamfered, the two sides of any one of the isosceles triangular bosses are respectively connected to the first flow channel (31), and the bottom side of any one of the isosceles triangular bosses is connected to the second flow channel (32); Wherein, the top angle of the isosceles triangular boss is arranged close to one side of the water inlet, and the bottom side of the isosceles triangular boss is arranged close to one side of the water outlet; and the bottom side is connected to the second flow channel (32); and / or, the bottom side of the isosceles triangular boss is arranged close to one side of the water inlet; and the top angle of the isosceles triangular boss is arranged close to one side of the water outlet.

7. The filter stack according to any one of claims 1 to 6, characterized in that: The laminate body (1) is provided with a plurality of groups, and the plurality of groups of laminate bodies (1) are stacked and arranged in a direction perpendicular to the laminate body (1).

8. The filter stack according to claim 7, characterized in that: Also includes: A plurality of connecting structures are arranged on the laminate body (1), and the connecting structures are used to connect two adjacent laminate bodies (1) arranged in a stacked manner.

9. The filter stack according to claim 8, characterized in that: The connecting structure is a connecting hole (4), the connecting hole (4) is arranged between two adjacent flow guide members (2) along the second direction, the connecting hole (4) is a circular through hole, the diameter of the circular connecting hole (4) is a first size, and the first size is equal to the shortest distance between two adjacent flow guide members (2) along the second direction.

10. A filter, characterized in that: The filter stack comprises the filter stack described in any one of claims 1 to 9.

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