A filter assembly

Abstract

The utility model provides a filter assembly, including filter part and peripheral package part, the filter part has interval unit and package unit, interval unit with package unit is alternately stacked in proper order, interval unit includes at least first screen, package unit includes at least second screen and filter layer, at least one of first screen with second screen edge has support, the hardness of support is greater than the hardness of first screen or second screen connected with it, and the edge of first screen or second screen is fluidly sealed, the filter assembly has liquid inlet hole and permeate outlet, liquid inlet hole communicates with one of first screen and second screen, and permeate outlet communicates with the other of first screen and second screen, has the advantage that avoids the overall structure of filter assembly to distort, improves the flatness of first screen, second screen or filter layer, guarantees the filtering performance of filter assembly.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment, and in particular to a filtration component. Background Technology

[0002] In experimental or industrial production, filtration components are often used to separate or concentrate products of solid-liquid or solid-gas mixtures. Specifically, they can have various filtration forms, such as tangential flow filtration and vertical flow filtration.

[0003] Existing filter assemblies typically include a filter section and a peripheral encapsulation section. The filter section is mainly formed by alternating stacks of inlet units and filtrate units, and is used to filter fluids. The peripheral encapsulation section surrounds the edge of the filter section and seals the edge of the filter section to ensure the overall airtightness of the filter assembly. The inlet unit typically includes an inlet screen, and the filtrate unit typically includes a filtrate screen and a filter membrane. During the manufacturing process of the filter assembly, the inlet screen, filter layer, and filtrate screen are usually stacked alternately to form the filter section, and then the peripheral encapsulation section is solidified on the outer periphery of the filter section by welding or injection molding.

[0004] However, due to the different shrinkage rates of different layers (such as the inlet screen, the filtrate screen, the filter layer and the peripheral encapsulation), the heating and cooling curing process can easily cause different degrees of deformation in the different layers, which can lead to unevenness in the membrane package and affect the filtration performance of the filter assembly. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a filtering component. To achieve the above objective, this utility model adopts the following technical solution:

[0006] A filter assembly includes a filter section and a peripheral encapsulation section surrounding and encapsulating the edge of the filter section.

[0007] The filter section has a spacer unit and a packaging unit, which are stacked alternately in sequence.

[0008] The spacer unit includes at least a first screen, and the encapsulation unit includes at least a second screen and a filter layer;

[0009] At least one of the first screen and the second screen has a support at its edge;

[0010] The support member has a hardness greater than that of the first or second screen connected to it, and provides a fluid seal for the edge of the first or second screen.

[0011] The filter assembly has a liquid inlet and a permeate outlet. The liquid inlet is connected to one of a first screen and a second screen, and the permeate outlet is connected to the other of the first screen and the second screen.

[0012] The peripheral encapsulation portion covers the outside of the support member.

[0013] In the above solution, by pre-setting a support member with relatively high hardness and strong deformation resistance at the edge of at least one of the first screen and the second screen, it is possible to reduce the deformation of the first screen, the second screen or the filter layer structure caused by the different shrinkage of the surrounding packaging parts after processing due to the different structures inside the membrane package during the packaging process, which would lead to the distortion of the overall structure of the filter assembly. This helps to improve the flatness of the first screen, the second screen or the filter layer and ensure the filtration performance of the filter assembly.

[0014] Specifically, when the support member is located at the edge of at least one of the first and second screens, the support member enhances the deformation resistance of the first or second screen itself, and allows for greater connection of the peripheral encapsulation portion to the support member, thus reducing the impact of the shrinkage of the peripheral encapsulation portion on the first and second screens. Simultaneously, the support member also supports its adjacent filter layers and transfers its supporting force to the adjacent first or second screen. In other words, two adjacent support members can clamp the first screen and filter layer or the second screen and filter layer between them, thereby effectively reducing the impact of the shrinkage of the peripheral encapsulation portion on the overall filter assembly.

[0015] In addition, the support member can achieve fluid sealing of the edge of the first screen or the second screen, and the outer periphery of the filter assembly is also provided with a peripheral encapsulation part, which can effectively improve the overall sealing performance of the filter assembly, especially when the support member is set on the first screen.

[0016] Preferably, the support member includes a support portion and a limiting portion located outside the support portion;

[0017] The support portion penetrates into the first screen or the second screen in the thickness direction; when the support is disposed on the first screen, the encapsulation unit adjacent to the first screen is abutted and connected to the support portion; when the support is disposed on the second screen, the spacer unit adjacent to the encapsulation unit is abutted and connected to the support portion.

[0018] The limiting portion protrudes at least partially from the end face of the supporting portion to form a limiting surface on the periphery of the packaging unit or the spacer unit.

[0019] In the above scheme, when the support is set on the first screen, the support can be used to press against the packaging unit during the packaging process of the filter component, thereby limiting and supporting the end face of the packaging unit, ensuring the flatness of the packaging unit, and improving the overall packaging effect. Similarly, when the support is set on the second screen, the spacer unit can be pressed against during the packaging process of the filter component, thereby limiting and supporting the end face of the spacer unit, ensuring the flatness of the spacer unit, and improving the overall packaging effect.

[0020] The limiting portion protrudes at least partially from the end face of the support portion to form a limiting surface. When the support member is placed on the first screen, the limiting portion can be used to limit the periphery of the packaging unit, thereby preventing excessive deformation of the packaging unit during the compression packaging process. At the same time, it facilitates the positioning and stacking of the packaging unit and its adjacent spacer units before compression packaging, thus preventing the packaging unit from shifting or deforming relative to its adjacent spacer units during stacking and compression packaging. Similarly, when the support member is placed on the second screen, it can also achieve circumferential limiting of the filter layer and the first screen to prevent excessive deformation of the filter layer and the first screen, and facilitate the positioning and stacking of the packaging unit and the first screen.

[0021] Furthermore, the limiting part is located on the outside of the support part, thus limiting the outer side of the support part. During the stacking and compression encapsulation of the filter components, excessive outward deformation of the support part can be avoided, allowing the support part to provide sufficient support force to its adjacent encapsulation units or spacer units. This prevents the adjacent layer structures (spacer units and encapsulation units) from shifting due to the deformation of the support part during compression. The limiting part can also increase the distance between the peripheral encapsulation parts and the support part, spacer units, and encapsulation units to a certain extent, providing flow channels and curing space for the peripheral encapsulation parts. This further prevents deformation of the first screen, second screen, or filter layer structure due to different shrinkage properties of the various structures within the membrane package after processing.

[0022] Preferably, the filter section has a first side and a second side opposite to each other, and a third side and a fourth side connecting the first side and the second side;

[0023] The lengths of the third side and the fourth side are greater than those of the first side and the second side;

[0024] The liquid inlet and the permeate outlet are arranged along the first side and the second side;

[0025] The support portion is arranged around the periphery of the filter portion, and the limiting portion is provided at least in a portion of the third and fourth sides.

[0026] In the above solution, by surrounding the filter section with the support, the encapsulation effect around the corresponding encapsulation unit or spacer unit can be improved, and the contact area between the support and the adjacent encapsulation unit or spacer unit can be further expanded, thus avoiding wrinkles in the adjacent encapsulation unit or spacer unit, especially the filter layer of the encapsulation unit.

[0027] Furthermore, since the third and fourth sides of the filter section are relatively longer, meaning that the spacer unit and the encapsulation unit have larger stress surfaces on the third and fourth sides, they are more prone to torsional deformation and displacement when the stress is uneven at different positions on the stress surface. In other words, the spacer unit and the encapsulation unit are more susceptible to deformation due to the influence of the surrounding encapsulation section on the third and fourth sides. Therefore, by surrounding the filter section with the support section and setting the limiting section at least in a part of the third and fourth sides, excessive deformation of the encapsulation unit and the spacer unit can be further avoided.

[0028] Preferably, the support member is disposed on the periphery of the first screen.

[0029] The limiting portion protrudes from at least one side of the support portion, and a receiving cavity for accommodating the packaging unit is formed on the inner side of the portion protruding from the support portion.

[0030] In the above scheme, the cavity for accommodating the packaging unit is formed on the inner side of the limiting part, which is beneficial for the positioning and installation of the packaging unit and the spacer unit. At the same time, it can prevent the packaging unit from shifting relative to the first screen during the stacking and packaging process.

[0031] Preferably, the number of the spacer units is one, and the number of the encapsulation units is two.

[0032] The support extends from one end face of the first screen to the other end face of the first screen.

[0033] The limiting part is disposed on the third side and the fourth side, and the limiting part extends from one end face of the support part to protrude from the other end face of the support part;

[0034] The portion of the limiting part located in the third side region extends in the opposite direction to the portion located in the fourth side region, so that the portion of the limiting part protruding from the support part and the peripheral encapsulation part together form the receiving cavity.

[0035] In the above scheme, since there is one spacer unit and two encapsulation units, the extrusion force applied from both ends of the filter section during encapsulation is relatively small. Therefore, in this scheme, by extending the limiting part located on the third and fourth sides in opposite directions, it is possible to ensure the positioning and installation effect of the limiting part on the encapsulation unit, and also to prevent the periphery of the same encapsulation unit from being surrounded by the limiting part. This makes it easier for the spacer unit and encapsulation unit to flatten when the end face of the filter section is subjected to relatively small extrusion force, resulting in a better sealing effect of the filter section (especially the periphery of the liquid inlet and the permeate outlet).

[0036] Preferably, the two end faces of the support portion are configured as substantially parallel planes.

[0037] In the above scheme, the two end faces of the support are set as basically parallel planes, which facilitates the clamping of adjacent packaging units and reduces the processing difficulty of the support. It should be noted that "basically parallel" means that slight convexity or concavity is allowed on the end faces of the support, as long as the thickness of each area of ​​the support is consistent as a whole.

[0038] Preferably, the number of the spacer units is greater than one, the number of the encapsulation units is the number of spacer units plus one, and both ends of the filter section are encapsulation units;

[0039] The limiting part protrudes from the supporting part on both sides of the supporting part;

[0040] Alternatively, the limiting part protrudes from the support part on one side and is flush with the support part on the other side.

[0041] Alternatively, the limiting portion protrudes from the supporting portion from two directions on the third and fourth sides respectively, and forms substantially parallel planes on the two end faces of the limiting portion.

[0042] In the above scheme, by stacking several spacer units alternately and ensuring that both ends of the filter section are encapsulation units, the filtration efficiency of the filter section can be increased, and at the same time, the sealing performance of the filter section can also be increased.

[0043] Preferably, in the encapsulation units at both ends of the filter section, the side away from the first screen is configured as an impermeable liquid sealing layer, and the side closer to the first screen is configured as a filter layer.

[0044] Preferably, the packaging unit has a peripheral seal for sealing the periphery of the packaging unit, and the projection of the inner edge of the peripheral seal on the plane of the first screen falls within the range of the support.

[0045] In the above solution, the support component can be used to improve the compression effect of the surrounding seal, thereby improving the stability and sealing of the encapsulation unit in the filter assembly.

[0046] Preferably, the first screen is in fluid communication with the liquid inlet, and the second screen is in fluid communication with the permeate outlet.

[0047] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0048] 1. By pre-setting a support member with relatively high deformation resistance (i.e., good deformation resistance) at the edge of at least one of the first screen and the second screen, the deformation of the first screen, the second screen, or the filter layer structure caused by the different shrinkage of the surrounding packaging parts after processing can be reduced, thereby reducing the distortion of the overall structure of the filter assembly. This helps to improve the flatness of the first screen, the second screen, or the filter layer and ensure the filtration performance of the filter assembly.

[0049] 2. When the support is set on the first screen, the support can be used to press against the packaging unit during the packaging process of the filter assembly, thereby limiting and supporting the end face of the packaging unit, ensuring the flatness of the packaging unit, and improving the overall packaging effect. Similarly, when the support is set on the second screen, the spacer unit can be pressed against during the packaging process of the filter assembly, thereby limiting and supporting the end face of the spacer unit, ensuring the flatness of the spacer unit, and improving the overall packaging effect.

[0050] The limiting portion protrudes at least partially from the end face of the support portion to form a limiting surface. When the support member is placed on the first screen, the limiting portion can be used to limit the periphery of the packaging unit, thereby preventing excessive deformation of the packaging unit during the compression packaging process. At the same time, it facilitates the positioning and stacking of the packaging unit and its adjacent spacer units before compression packaging, thus preventing the packaging unit from shifting or deforming relative to its adjacent spacer units during stacking and compression packaging. Similarly, when the support member is placed on the second screen, it can also achieve circumferential limiting of the filter layer and the first screen to prevent excessive deformation of the filter layer and the first screen, and facilitate the positioning and stacking of the packaging unit and the first screen.

[0051] Furthermore, the limiting part is located on the outside of the support part, thus limiting the outer side of the support part. During the stacking and compression encapsulation of the filter components, excessive outward deformation of the support part can be avoided, allowing the support part to provide sufficient support force to its adjacent encapsulation units or spacer units. This prevents the adjacent layer structures (spacer units and encapsulation units) from shifting due to the deformation of the support part during compression. The limiting part can also increase the distance between the peripheral encapsulation parts and the support part, spacer units, and encapsulation units to a certain extent, providing flow channels and curing space for the peripheral encapsulation parts. This further prevents deformation of the first screen, second screen, or filter layer structure due to different shrinkage properties of the various structures within the membrane package after processing of the peripheral encapsulation components.

[0052] 3. By surrounding the filter section with the support, the encapsulation effect around the corresponding encapsulation unit or spacer unit can be improved, and the contact area between the support and the adjacent encapsulation unit or spacer unit can be further expanded, thus avoiding wrinkles in the adjacent encapsulation unit or spacer unit, especially the filter layer of the encapsulation unit.

[0053] Furthermore, since the third and fourth sides of the filter section are relatively longer, meaning that the spacer unit and the encapsulation unit have larger stress surfaces on the third and fourth sides, they are more prone to torsional deformation and displacement when the stress is uneven at different positions on the stress surface. In other words, the spacer unit and the encapsulation unit are more susceptible to deformation due to the influence of the surrounding encapsulation section on the third and fourth sides. Therefore, by surrounding the filter section with the support section and setting the limiting section at least in a part of the third and fourth sides, excessive deformation of the encapsulation unit and the spacer unit can be further avoided. Attached Figure Description

[0054] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0055] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0056] Figure 2 for Figure 1 A schematic diagram of the section along section AA.

[0057] Figure 3 for Figure 2 An enlarged view of position D1 in the middle.

[0058] Figure 4 for Figure 2 An exploded view of the locations of two adjacent spacer units and the encapsulation unit between them.

[0059] Figure 5 This is a schematic diagram of the structure of Embodiment 2 provided by this utility model.

[0060] Figure 6 This is a schematic diagram of the structure of Embodiment 3 provided by this utility model.

[0061] Figure 7 This is a schematic diagram of the structure of Embodiment 4 provided by this utility model.

[0062] Figure 8 This is a structural schematic diagram of Embodiment 5 of the present invention.

[0063] Figure 9 for Figure 8 A schematic diagram showing the distribution of the first screen and support components in the filter assembly.

[0064] Explanation of reference numerals in the attached figures:

[0065] 1. Filter section; 101. First side; 102. Second side; 103. Third side; 104. Fourth side; 11. Spacer unit; 111. First screen; 12. Encapsulation unit; 121. Second screen; 122. Filter layer; 123. Liquid-impermeable sealing layer; 124. Peripheral seal; 2. Peripheral encapsulation section; 3. Support member; 31. Support part; 32. Limiting part; 4. Liquid inlet hole; 5. Permeate outlet; 6. Receiving cavity; 7. End cap. Detailed Implementation

[0066] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0067] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0068] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0069] Example 1

[0070] See Figures 1 to 4 This utility model provides a filter assembly, including a filter section 1 and a peripheral encapsulation section 2 surrounding and encapsulating the edge of the filter section 1. The filter section 1 has spacer units 11 and encapsulation units 12, which are stacked alternately in sequence. The peripheral encapsulation section 2 is formed by curing an adhesive, for example, by curing a thermoplastic or thermosetting resin in a corresponding mold. The resin can be optionally silicone, epoxy resin, polyurethane, polyolefin, etc. End caps 7 are also provided at both ends of the filter section 1, and the peripheral encapsulation section 2 is sealed to the end face of the end caps 7 to achieve a seal on the filter section 1.

[0071] Specifically, the spacer unit 11 includes a first screen 111, and the encapsulation unit 12 includes a second screen 121 and a filter layer 122; the first screen 111 has a support 3 at its edge, the support 3 has a greater resistance to deformation than the first screen 111 connected thereto, and fluid seals the edge of the first screen 111.

[0072] Of course, in other embodiments, the support member 3 can also be provided at the edge of the second screen 121, or the support member 3 can be provided at the edges of both the first screen 111 and the second screen 121. The support member 3 can be used to fluid seal the edge of the first screen 111 or the second screen 121. At the same time, the deformation resistance of the support member 3 is greater than that of the first screen 111 or the second screen 121 connected to it. The setting of the support member 3 can reduce the deformation of the first screen 111, the second screen 121 or the filter layer 122 structure caused by the different shrinkage of the various structures in the membrane package after the processing of the peripheral packaging part 2 during the encapsulation process, thereby reducing the distortion of the overall structure of the filter assembly.

[0073] It is easy to understand that by pre-setting a support member 3 with relatively large deformation resistance (i.e., good deformation resistance) on the edge of at least one of the first screen 111 and the second screen 121, the deformation of the first screen 111, the second screen 121, or the filter layer 122 caused by the different shrinkage of the various structures inside the membrane package after the processing of the peripheral packaging part 2 during the encapsulation process can be reduced, thereby reducing the distortion of the overall structure of the filter assembly. This helps to improve the flatness of the first screen 111, the second screen 121, or the filter layer 122 and ensure the filtration performance of the filter assembly.

[0074] Specifically, when the support member 3 is disposed at the edge of at least one of the first screen 111 and the second screen 121, the support member 3 enhances the deformation resistance of the first screen 111 or the second screen 121 itself, and the peripheral encapsulation portion 2 can also be connected to the support member 3 more extensively, thereby reducing the impact of the shrinkage of the peripheral encapsulation portion 2 on the first screen 111 and the second screen 121. At the same time, the support member 3 can also support its adjacent filter layer 122, and can also transfer its supporting force to the first screen 111 or the second screen 121 adjacent to the filter layer 122. That is, two adjacent support members 3 can clamp the first screen 111 and the filter layer 122 or the second screen 121 and the filter layer 122 between them, thereby effectively reducing the impact of the shrinkage of the peripheral encapsulation portion 2 on the overall filter assembly.

[0075] In addition, the support member 3 can achieve fluid sealing of the edge of the first screen 111 or the second screen 121, and the outer periphery of the filter assembly is also provided with a peripheral encapsulation part 2, which can effectively improve the overall sealing performance of the filter assembly, especially when the support member 3 is set on the first screen 111.

[0076] Furthermore, the first screen 111 is configured as a liquid inlet screen, and the second screen 121 is configured as a filtrate screen. The filter assembly has a liquid inlet hole 4 and a permeate outlet 5, wherein the liquid inlet hole 4 is in fluid communication with the first screen 111 (i.e., the liquid inlet screen), and the permeate outlet 5 is in fluid communication with the second screen 121 (i.e., the filtrate screen). When the filter assembly is used for filtration, the fluid to be filtered is injected through the liquid inlet hole 4, and after being guided by the first screen 111, the fluid runs tangentially (i.e., parallel to the end face of the first screen 111) and is distributed on the end face of the first screen 111. After being filtered by the filter layer 122, the filtered fluid moves to the permeate outlet 5 under the guidance of the second screen 121 and is discharged from the filter assembly from the permeate outlet 5.

[0077] Of course, in other embodiments, if the first screen 111 is set as a filtrate screen and the second screen 121 is set as an inlet screen, then the inlet hole 4 is in fluid communication with the second screen 121 and the permeate outlet 5 is in fluid communication with the first screen 111.

[0078] See Figures 1 to 4 The support member 3 includes a support portion 31 and a limiting portion 32 located outside the support portion 31.

[0079] Specifically, the support portion 31 penetrates the first screen 111 in the thickness direction. The encapsulation unit 12 adjacent to the first screen 111 is tightly connected to the support portion 31. This allows the support portion 31 to press against the encapsulation unit 12 during the encapsulation process of the filter assembly, thereby limiting and supporting the end face of the encapsulation unit 12, ensuring the flatness of the encapsulation unit 12, and improving the overall encapsulation effect. Of course, it should be understood that in other embodiments, if the support member 3 is disposed on the second screen 121, the spacer unit 11 adjacent to the encapsulation unit 12 is tightly connected to the support portion 31. This allows the spacer unit 11 to press against the second screen 12 during the encapsulation process of the filter assembly, thereby limiting and supporting the end face of the spacer unit 11, ensuring the flatness of the spacer unit 11, and improving the overall encapsulation effect.

[0080] Furthermore, the limiting portion 32 at least partially protrudes from the end face of the support portion 31 to form a limiting surface around the packaging unit 12 or the spacer unit 11. This allows the limiting portion 32 to limit the periphery of the packaging unit 12, preventing excessive deformation of the packaging unit 12 during the compression packaging process. Simultaneously, it facilitates the positioning and stacking of the packaging unit 12 and its adjacent spacer units 11 before compression packaging, ensuring that the packaging unit 12 does not shift or deform relative to its adjacent spacer units 11 during stacking and compression packaging. Of course, it should be understood that in other embodiments, if the support member 3 is disposed on the second screen 121, it can also achieve circumferential limiting of the filter layer 122 and the first screen 111, preventing excessive deformation of the filter layer 122 and the first screen 111, and facilitating the positioning and stacking of the packaging unit 12 and the first screen 111.

[0081] It is worth noting that the above-mentioned "tight connection" means that when the spacer unit 11 and the packaging unit 12 are stacked together, there is a mutual squeezing force between the packaging unit 12 and the support 31. It can also be understood that the support 31 located on two adjacent spacer units 11 can clamp the packaging unit 12 located between them.

[0082] Furthermore, it is worth noting that since the limiting part 32 is located outside the support part 31, it can limit the outer side of the support part 31. During the stacking and compression encapsulation of the filter components, it can prevent the support part 31 from undergoing excessive outward deformation, allowing the support part 31 to provide sufficient support force to the adjacent encapsulation unit 12 or spacer unit 11. This prevents the adjacent layer structure (spacer unit 11 and encapsulation unit 12) from shifting due to the deformation of the support part 31. The limiting part 32 can also increase the distance between the peripheral encapsulation part 2 and the support part 31, spacer unit 11, and encapsulation unit 12 to a certain extent, providing flow channels and curing space for the peripheral encapsulation part 2. This further prevents deformation of the first screen 111, second screen 121, or filter layer 122 structure due to different shrinkage properties of the structures within the membrane package after processing.

[0083] See Figures 1 to 4 The filter section 1 has a first side 101 and a second side 102 opposite to each other, and a third side 103 and a fourth side 104 connected between the first side 101 and the second side 102. The lengths of the third side 103 and the fourth side 104 are greater than the lengths of the first side 101 and the second side 102. The liquid inlet hole 4 and the permeate outlet 5 are arranged along the first side 101 and the second side 102.

[0084] Furthermore, the support portion 31 is arranged around the periphery of the filter portion 1, which not only improves the sealing effect around the corresponding spacer unit 11, but also further expands the contact area between it and the adjacent sealing unit 12, preventing wrinkles in the adjacent sealing unit 12, especially the filter layer 122 of the sealing unit 12. That is, the support portion 31 arranged around the periphery of the filter portion 1 can increase the sealing effect around the spacer unit 11 (i.e., the first screen 111), and also increase the pressing effect of the support portion 31 against the adjacent sealing unit 12.

[0085] Furthermore, the limiting part 32 is arranged around the periphery of the filter part 1.

[0086] Of course, the limiting part 32 can also be provided in a local area of ​​the filter part 1. However, it should be understood that since the third side 103 and the fourth side 104 of the filter part 1 are relatively longer, that is, the force-bearing surface of the spacer unit 11 and the encapsulation unit 12 on the third side 103 and the fourth side 104 is larger, it is easier for the spacer unit 11 and the encapsulation unit 12 to undergo large deformation due to the influence of the surrounding encapsulation part 2 on the third side 103 and the fourth side 104. Therefore, if the limiting part 32 only protrudes locally from the end face of the support part 31, it is preferable to provide the limiting part 32 in a local area of ​​the third side 103 and the fourth side 104 to avoid excessive deformation of the spacer unit 11 and the encapsulation unit 12.

[0087] Depending on the filtration requirements of the filter components (such as filtration efficiency requirements), the number of alternating stacked layers of the spacer unit 11 and the encapsulation unit 12 can be set differently.

[0088] See Figures 2 to 4 In this embodiment, the spacer unit 11 has three layers, the encapsulation unit 12 has four layers, and both ends of the filter section 1 are encapsulation units 12. That is, the number of spacer units 11 is greater than one, the number of encapsulation units 12 is the number of spacer units 11 plus one, and both ends of the filter section 1 are encapsulation units 12. In other words, by alternately stacking several spacer units 11 and ensuring that both ends of the filter section 1 are encapsulation units 12, the filtration efficiency of the filter section 1 can be increased, and at the same time, the sealing performance of the filter section 1 can also be increased.

[0089] Furthermore, the limiting part 32 protrudes from the support part 31 on both sides of the support part 31, and the inner side of the portion of the limiting part 32 protruding from the support part 31 forms a receiving cavity 6 for accommodating the packaging unit 12, which is beneficial for the positioning and installation of the packaging unit 12 and the spacer unit 11. At the same time, it can prevent the packaging unit 12 from shifting relative to the first screen 111 during the stacking and packaging process.

[0090] See Figure 3 and Figure 4The height of the limiting part 32 protruding from the support part 31 can be set according to actual needs. For example, the limiting part 32 on the first screen 111 of the outermost packaging unit 12 protrudes from the support part 31 at a height of H1 towards the end of the filter assembly, and the limiting part 32 on the first screen 111 protrudes from the support part 31 at a height of H2 towards the center of the filter assembly, where H1 > H2. The limiting part 32 on the first screen 111 located at the center protrudes from the support part 31 at equal heights on both sides, and H can be set to half the thickness of the packaging unit 12 to facilitate the packaging of the spacer unit 11 and the packaging unit 12. Of course, in other embodiments, the height of the limiting part 32 protruding from the support part 31 on different first screens 111 can also be set according to actual needs.

[0091] Furthermore, the spacer unit 11 includes only one first screen 111, which is configured as a liquid inlet screen. The encapsulation unit 12 stacked in the middle includes a second screen 121 and filter layers 122 stacked on both sides of the second screen 121, with the second screen 121 configured as a filtrate screen. The encapsulation units 12 located at the outermost ends include a second screen 121, a filter layer 122, and a liquid-impermeable sealing layer 123. The side of the second screen 121 away from the first screen 111 is configured as the liquid-impermeable sealing layer 123, and the side of the second screen 121 closer to the first screen 111 is configured as the filter layer 122, to ensure the sealing effect at the end of the filter assembly. Specifically, the liquid-impermeable sealing layer 123 can be made of polyolefin, such as polyethylene or polypropylene.

[0092] Example 2

[0093] See Figure 5 Based on the above embodiment 1, the difference in this embodiment is that: the packaging unit 12 has a peripheral seal 124, which is used to encapsulate the periphery of the packaging unit 12. The projection of the inner edge of the peripheral seal 124 on the plane of the first screen 111 falls within the range of the support 3, thereby enabling the support 3 to improve the pressing effect of the peripheral seal 124 and improve the stability and sealing of the packaging unit 12 in the filter assembly.

[0094] Example 3

[0095] See Figure 6 Based on the above embodiment 1, the difference in this embodiment is that the limiting part 32 protrudes from the support part 31 on one side of the support part 31 and is flush with the support part 31 on the other side of the support part 31.

[0096] Example 4

[0097] See Figure 7Based on the above embodiment 1, the difference in this embodiment is that the limiting part 32 protrudes from the supporting part 31 from two directions on the third side 103 and the fourth side 104 respectively, and forms basically parallel planes on the two end faces of the limiting part 32.

[0098] Example 5

[0099] See Figure 8 and Figure 9 Based on the above embodiment one, the difference in this embodiment is that: the number of spacer units 11 is one, and the number of encapsulation units 12 is two, that is, the spacer unit 11 is set as one layer, and the encapsulation unit 12 is set as two layers, with the two encapsulation units 12 located on both sides of the spacer unit 11 respectively.

[0100] Specifically, the support portion 31 extends from one end face of the first screen 111 to the other end face of the first screen 111, so that the support portion 31 can encapsulate the periphery of the first screen 111, and at the same time, can press against the end faces of the encapsulation units 12 located on both sides of the first screen 111.

[0101] Furthermore, the two end faces of the support portion 31 are set as basically parallel planes. On the one hand, this facilitates the clamping of the adjacent packaging unit 12. On the other hand, "basically parallel" means that the end faces of the support portion 31 can have slight protrusions or depressions, which reduces the processing difficulty of the support portion 31.

[0102] Furthermore, the limiting portion 32 is provided on the third side 103 and the fourth side 104, and the limiting portion 32 extends from one end face of the support portion 31 to protrude from the other end face of the support portion 31; the portion of the limiting portion 32 located in the region of the third side 103 extends in the opposite direction to the portion located in the region of the fourth side 104, so that the portion of the limiting portion 32 protruding from the support portion 31 and the peripheral encapsulation portion 2 form a receiving cavity 6.

[0103] It is worth noting that since there is one spacer unit 11 and two encapsulation units 12, the pressure applied from both ends of the filter section 1 during encapsulation is relatively small. Therefore, in this solution, by extending the portions of the limiting portion 32 located on the third side 103 and the fourth side 104 in opposite directions, it is possible to ensure the positioning and installation effect of the limiting portion 32 on the encapsulation unit 12, and also to prevent the periphery of the same encapsulation unit 12 from being surrounded by the limiting portion 32. This makes it easier for the spacer unit 11 and the encapsulation unit 12 to flatten when the end face of the filter section 1 is subjected to relatively small pressure, resulting in a better sealing effect for the filter section 1 (especially around the liquid inlet 4 and the permeate outlet 5).

[0104] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A filter assembly, characterized in that, It includes a filter section and a peripheral encapsulation section that surrounds and encapsulates the edge of the filter section; The filter section has a spacer unit and a packaging unit, which are stacked alternately in sequence. The spacer unit includes at least a first screen, and the encapsulation unit includes at least a second screen and a filter layer; At least one of the first screen and the second screen has a support at its edge; The support member has a hardness greater than that of the first or second screen connected to it, and provides a fluid seal for the edge of the first or second screen. The filter assembly has a liquid inlet and a permeate outlet. The liquid inlet is connected to one of a first screen and a second screen, and the permeate outlet is connected to the other of the first screen and the second screen. The peripheral encapsulation portion covers the outside of the support member.

2. A filter assembly according to claim 1, characterized in that, The support member includes a support portion and a limiting portion located outside the support portion; The support portion penetrates into the first screen or the second screen in the thickness direction; when the support is disposed on the first screen, the encapsulation unit adjacent to the first screen is abutted and connected to the support portion; when the support is disposed on the second screen, the spacer unit adjacent to the encapsulation unit is abutted and connected to the support portion. The limiting portion protrudes at least partially from the end face of the supporting portion to form a limiting surface on the periphery of the packaging unit or the spacer unit.

3. A filter assembly according to claim 2, characterized in that, The filter section has a first side and a second side opposite to each other, and a third side and a fourth side connected between the first side and the second side; The lengths of the third side and the fourth side are greater than those of the first side and the second side; The liquid inlet and the permeate outlet are arranged along the first side and the second side; The support portion is arranged around the periphery of the filter portion, and the limiting portion is provided at least in a portion of the third and fourth sides.

4. A filter assembly according to claim 3, characterized in that, The support member is disposed on the periphery of the first screen. The limiting portion protrudes from at least one side of the support portion, and a receiving cavity for accommodating the packaging unit is formed on the inner side of the portion protruding from the support portion.

5. A filter assembly according to claim 4, characterized in that, The number of the spacer unit is one, and the number of the encapsulation unit is two. The support extends from one end face of the first screen to the other end face of the first screen. The limiting part is disposed on the third side and the fourth side, and the limiting part extends from one end face of the support part to protrude from the other end face of the support part; The portion of the limiting part located in the third side region extends in the opposite direction to the portion located in the fourth side region, so that the portion of the limiting part protruding from the support part and the peripheral encapsulation part together form the receiving cavity.

6. A filter assembly according to claim 5, characterized in that, The two end faces of the support are set as basically parallel planes.

7. A filter assembly according to claim 4, characterized in that, The number of the interval units is greater than one, the number of the encapsulation units is the number of interval units plus one, and both ends of the filter section are encapsulation units. The limiting part protrudes from the supporting part on both sides of the supporting part; Alternatively, the limiting part protrudes from the support part on one side and is flush with the support part on the other side. Alternatively, the limiting portion protrudes from the supporting portion from two directions on the third and fourth sides respectively, and forms substantially parallel planes on the two end faces of the limiting portion.

8. A filter assembly according to any one of claims 5-7, characterized in that, In the encapsulation units at both ends of the filter section, the side away from the first screen is set as an impermeable liquid sealing layer, and the side closer to the first screen is set as a filter layer.

9. The filter assembly according to any one of claims 5 to 7, characterized in that, The packaging unit has a peripheral seal for sealing the periphery of the packaging unit, and the projection of the inner edge of the peripheral seal on the plane of the first screen falls within the range of the support.

10. A filter assembly according to claim 1, characterized in that, The first screen is in fluid communication with the liquid inlet, and the second screen is in fluid communication with the permeate outlet.

Images