Film bag

Abstract

The utility model relates to a membrane bag which comprises a filtering part and a peripheral packaging part arranged on the peripheral side of the filtering part in a wrapping mode, and the filtering part comprises a screen and a filtering membrane which are arranged at intervals. The screen is provided with a through hole and a packaging hole, the peripheral packaging part is provided with two oppositely arranged peripheral packaging part end faces, at least one side end face of the peripheral packaging part is provided with an abutting area, and the abutting area protrudes out of the peripheral packaging part end faces; the projection area of the abutting area on the end face of the peripheral packaging part is smaller than the area of the end face of the peripheral packaging part, so that a receding area can be formed between the side wall of the abutting area and the end face of the peripheral packaging part, and the packaging structure has the advantages that the sealing effect is good, and the supporting strength of the peripheral packaging part is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of filter materials, in particular to a membrane package. Background Art

[0002] Membrane packages are often used to separate or concentrate solid-liquid or solid-gas mixed phase products in experiments or industrial production. In the field of biomedicine, membrane packages are a commonly used form of filtration components, usually including a filtration part and a peripheral packaging part, wherein the filtration part usually includes alternately stacked screens and filter membranes, the screens are mainly used for fluid diversion, and the filter membranes mainly play a filtering effect; the peripheral packaging part is used to seal the surrounding side of the filtration part, fix the stacked filter membranes and screens, and prevent the fluid in the membrane package from leaking outward.

[0003] In order to increase the filtration efficiency, existing filter assemblies usually stack multiple membrane packages and clamp the membrane packages with external clamps. When the membrane packages are stacked, the end faces of two adjacent membrane packages and the end faces of the membrane packages and the clamps are pressed and sealed together through the peripheral packaging part. In order to prevent the filter part itself from deforming beyond the expected range during the processing and use of the membrane package, the peripheral packaging part usually has a certain hardness to ensure the support effect on the filter part. The increase in the hardness of the peripheral packaging part will make it less likely to deform during the pressure process, thereby affecting the sealing effect between the two adjacent peripheral packaging parts.

[0004] Furthermore, in order to ensure the sealing connection effect between the screen and the filter membrane of the filter part, the peripheral packaging part usually has a certain width, and the increase in the width of the peripheral packaging part will further increase its deformation difficulty, further affecting the sealing effect between two adjacent peripheral packaging parts.

[0005] Therefore, it is an urgent problem for those skilled in the art to provide a membrane package that has a good sealing effect when stacked, while not affecting the sealing effect and supporting strength of the surrounding packaging part itself. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a membrane package. To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A membrane package comprises a filtering portion and a peripheral packaging portion arranged on the peripheral side of the filtering portion, wherein the filtering portion comprises a screen and a filter membrane arranged at intervals; the screen is provided with through holes and packaging holes, the peripheral packaging portion has two oppositely arranged peripheral packaging portion end faces, at least one side end face of the peripheral packaging portion is provided with a contact area, and the contact area protrudes from the end face of the peripheral packaging portion; the projection area of ​​the contact area on the end face of the peripheral packaging portion is smaller than the area of ​​the end face of the peripheral packaging portion, so that a clearance area can be formed between the side wall of the contact area and the end face of the peripheral packaging portion.

[0008] Through the above technical solution, a contact area is protrudingly provided on the end face of the peripheral packaging part, and the area of ​​the contact area on the end face of the peripheral packaging part is smaller than the area of ​​the end face of the peripheral packaging part, so that a clearance area can be formed between the side wall of the contact area and the end face of the peripheral packaging part. When two adjacent membrane packages are stacked, the two membrane packages can directly contact each other or be pressed against each other by setting a gasket. Compared with directly using the end face of the complete peripheral packaging part to press against the gasket, the contact area is smaller in area and more likely to deform, thereby making the contact between the contact positions of the two membrane packages tighter, and further increasing the sealing between the two adjacent stacked membrane packages. In addition, the existence of the clearance area can ensure that the overall thickness of the peripheral packaging part remains unchanged, thereby making the strength, deformation resistance and peripheral sealing performance of the membrane package itself good, and will not affect the sealing of the contact area itself, so that an effective seal can be formed between the two adjacent stacked membrane packages, and will not affect the strength of the entire membrane package structure. At the same time, it also reduces the difficulty of membrane package processing and the cost required for processing.

[0009] Preferably, the abutting area is disposed around the inner side of the peripheral packaging portion, and the giving way area is formed around the outer side of the abutting area.

[0010] Through the above technical solution, the abutment area is arranged on the inner side of the peripheral packaging part, which can increase the sealing effect formed by the gasket between the peripheral packaging part and another adjacent peripheral packaging part or the screen, and make the resistance smaller when the fluid passes through, and it is not easy to produce fluid accumulation in the non-filtration area formed between the two adjacent peripheral packaging parts, which can ensure good sealing between adjacent membrane packages and will not affect the filtration efficiency and filtration effect of the membrane packages.

[0011] Preferably, the distance that the abutment area protrudes from the outermost screen of the membrane package is H, and H satisfies: 0≦H≦50mm.

[0012] Through the above technical scheme, the distance that the abutment area protrudes from the outermost screen of the membrane package is reasonably set. On the one hand, it can avoid that H is too large, resulting in the flow channel formed between the membrane package and the gasket being too large after the two adjacent membrane packages are stacked, thereby causing the fluid to be retained between the two adjacent membrane packages and affecting the overall filtration efficiency; on the other hand, it can avoid that H is too small, resulting in a small deformation amount that can be produced in the abutment area and affecting the sealing effect. At the same time, it can also avoid that the flow channel formed between the two adjacent membrane packages is too small after the abutment area is deformed and pressed tightly, thereby causing the fluid to encounter excessive resistance when passing through the adjacent membrane packages, thereby affecting the overall filtration efficiency.

[0013] Preferably, the thickness between two end surfaces of the peripheral packaging portion is not less than the thickness of the filter portion.

[0014] Through the above technical scheme, on the one hand, the peripheral packaging part can form a good seal on the outer peripheral side of the filter part. On the other hand, when the membrane package needs to be extruded, the external mold can directly extrude or squeeze through a gasket on the surface of the outermost screen of the membrane package, so that the screen and the filter membrane of the filter part are stacked and form a flatter surface structure, avoiding wrinkles in the filter membrane or screen structure, thereby providing sufficient fluid area for the passage of fluid and reducing the resistance of the fluid flow in the filter part.

[0015] Preferably, a sealing ring is provided on the packaging hole of the outermost screen; the sealing ring is arranged around the periphery of the packaging hole of the screen, and extends from the end surface of one side of the screen away from the center of the membrane package to protrude from the abutment area or be flush with the abutment area.

[0016] Through the above technical solution, a sealing ring is arranged on the packaging hole, and the end face of the sealing ring on one side away from the center of the membrane package extends to protrude from the abutment area or be flush with the abutment area. When the membrane packages are stacked and squeezed, the sealing ring can also be squeezed synchronously during the squeezing of the abutment area, thereby synchronously tightening the surrounding side of the packaging hole on the screen to improve the sealing performance around the hole.

[0017] Preferably, the hardness of the sealing ring is smaller than that of the peripheral packaging part, so as to press against the outermost screen or sealing ring of another membrane package adjacent thereto; and the hardness of the peripheral packaging part is not less than 80 Shore D.

[0018] Through the above technical solution, the sealing ring is squeezed synchronously when the abutment area is squeezed, and then the periphery of the packaging hole on the screen is pressed tightly. When the membrane package is further squeezed, the peripheral packaging part and the sealing ring are squeezed at the same time. Compared with the peripheral packaging part, the hardness of the sealing ring is smaller than that of the peripheral packaging part, and its elastic deformation is larger, which can further produce an elastic pressing effect, and further increase the sealing performance around the packaging hole on the screen.

[0019] Preferably, the sealing ring is welded around the packaging hole of the outer screen.

[0020] Through the above technical solution, the sealing ring is welded to the periphery of the packaging hole of the outermost screen. On the one hand, the sealing effect of the packaging hole can be further increased. On the other hand, the sealing ring is smaller in size than the surrounding packaging part. The sealing ring is welded, which can not only form a stable connection between the sealing ring and the outermost screen, but also facilitate the processing of the sealing ring and the outermost screen, thereby avoiding the sealing ring occupying too large an area on the screen, affecting the effective diversion area of ​​the screen, and further affecting the filtration efficiency.

[0021] Preferably, at least part of the screen has a glue penetration area around the periphery of the screen for glue to penetrate, so that the peripheral packaging part can be connected and sealed to the peripheral area of ​​the screen. From the center of the screen to the periphery, the glue penetration area protrudes from the filter membrane.

[0022] Through the above technical scheme, since the peripheral packaging part is formed by the solidification of the glue, compared with the peripheral packaging part being formed or infiltrated from the side wall of the screen, the setting of the glue seepage area can make the glue squeeze the screen area as little as possible during the solidification process, and the internal stress generated during the solidification process is more easily released to the outside of the screen, which is beneficial to ensure the flatness of the screen, and the setting of the glue seepage area can increase the connection area between the screen and the peripheral packaging part, which is beneficial to form a stable connection between the peripheral packaging part and the screen, and further increase the sealing effect around the screen; in addition, the glue seepage area protrudes from the filter membrane, so that the end face of the glue seepage area is exposed, which can increase the adhesion area between the peripheral packaging part and the glue seepage area, and further increase the connection strength between the peripheral packaging part and the screen.

[0023] Preferably, a projection of the glue seepage area on the end surface of the peripheral packaging portion partially overlaps with a projection of the abutment area on the end surface of the peripheral packaging portion, and the overlapping portion forms an overlapped area.

[0024] Through the above technical scheme, the projections of the glue seepage area and the abutment area on the end face of the peripheral packaging part can form an overlapping area. Then, along the thickness direction of the membrane package (i.e., the direction of force applied when the membrane packages are stacked), the glue seepage area and the abutment area can overlap. When the membrane package is under pressure, the abutment area is squeezed, and the pressure can be transmitted from the abutment area and the peripheral packaging part to the glue seepage area, further pressing the screen and filter membrane of the filter part, which can not only ensure the flatness of the screen and the filter membrane, but also increase the sealing of the surrounding side of the filter part.

[0025] Preferably, the overlap area is formed around the outside of the glue seepage area; the ratio of the width of the overlap area to the width of the glue seepage area is in the range of 0.2 to 2:1; the ratio of the width of the overlap area to the width of the abutment area is in the range of 0.2 to 1:1.

[0026] Through the above technical scheme, the overlap area is formed around the outside of the glue seepage area. When the membrane package is compressed, the compression force received by the overlap area can increase the compression effect on the periphery of the screen and the filter membrane, and further increase the sealing of the periphery of the filter part. The reasonable setting of the width of the overlap area, the glue seepage area and the abutment area can ensure the connection strength of the screen and the surrounding packaging part, and further ensure the flatness and sealing of the screen; on the other hand, the overlap area surrounds the outside of the glue seepage area, and the reasonable setting of the width can make the periphery of the screen uniformly stressed to increase the flatness of the screen and the filter membrane, thereby reducing the fluid flow resistance and increasing the filtration efficiency. In addition, the overlap area surrounds the outside of the glue seepage area. When the membrane package is squeezed, the stress area around the screen (i.e., the overlap area) can be located on the side of the glue seepage area away from the center of the membrane package, thereby not affecting the effective diversion area of ​​the screen, and further increasing the filtration efficiency of the membrane package.

[0027] Preferably, the filter portion has a first side and a second side that are relatively arranged, and a third side and a fourth side that are connected between the first side and the second side, and the through holes and the connecting holes are arranged in the first side and the second side regions; in the first side and the second side regions, the width ratio between the abutment area and the give-way area is in the range of 0.3 to 3:1, and / or, in the third side and the fourth side regions, the width ratio between the abutment area and the give-way area is in the range of 0.2 to 2:1.

[0028] Through the above technical scheme, the through holes and the connecting holes are arranged on the first side and the second side, and the fluid flows along the third side and the fourth side (i.e., from the first side to the second side or from the second side to the first side). At this time, the reasonable setting of the width of the abutment area and the yield area in the first side area and the second side area enables a stable connection to be formed between the packaging holes, the peripheral packaging parts and the abutment area of ​​the screen, which is beneficial to increase the connection strength of the membrane package as a whole; and the reasonable setting of the width of the abutment area and the yield area in the third side area and the fourth side area, and the larger width of the yield area in the third side area and the fourth side area compared with the first side area and the second side area, is beneficial to the deformation of the corresponding abutment area, which is beneficial to increase the sealing effect of the third side and the second side.

[0029] Preferably, an outer side wall of the peripheral packaging portion is provided with an inwardly curved clamping groove; a curved track of the side wall of the clamping groove is parallel to an outer edge of a corresponding clamping groove position of the abutting area.

[0030] Through the above technical solution, the provision of an inwardly curved snap-in groove is conducive to fixing the membrane package, and the curved track of the side wall of the snap-in groove is parallel to the outer edge of the snap-in groove position corresponding to the abutment area, so that the peripheral packaging part and the abutment area are subjected to more uniform force as a whole, making the external structure more stable when clamping and squeezing the membrane package. In addition, the snap-in groove is distributed in an arc shape, which can prevent the external force applied by the external structure when clamping or squeezing from acting on the screen or filter membrane in a direction perpendicular to the side wall of the filter part, which is conducive to maintaining the flatness of the filter screen and the filter membrane, so as to increase the filtration efficiency of the membrane package.

[0031] Preferably, the abutment area and the clearance area are smoothly connected.

[0032] Through the above technical solution, when the glue is solidified to form the abutment area, the clearance area and the peripheral packaging part, the injection molding structure formed by the three can be made flatter as a whole.

[0033] Preferably, a sealing gasket is provided on the abutting area, and / or a sealing gasket is provided on the giving way area, and the sealing gasket is used to squeeze and seal with the membrane package or the clamp adjacent to the membrane package.

[0034] By means of the above technical solution, the sealing gasket is arranged on the abutment area or the clearance area, and when two membrane packages are stacked on each other, the sealing between two adjacent membrane packages and between the membrane package and the clamp can be increased.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] 1. By protruding abutment area on the end face of the peripheral packaging part, and the area of ​​the abutment area on the end face of the peripheral packaging part is smaller than the area of ​​the end face of the peripheral packaging part, a clearance area can be formed between the side wall of the abutment area and the end face of the peripheral packaging part. When two adjacent membrane packages are stacked, the two membrane packages can be abutted through the abutment area. Compared with directly using the end faces of the peripheral packaging part to abut each other, since the abutment area is smaller, the deformation structure of the gasket after the gasket is squeezed can better seal the gap between the membrane packages and the gap between the membrane package and the clamp, thereby making the abutment of the two membrane packages closer, and further increasing the sealing between the two adjacent stacked membrane packages. In addition, the existence of the clearance area can ensure that the overall thickness of the peripheral packaging part remains unchanged, and will not affect the sealing of the abutment area itself, so that an effective seal can be formed between the two adjacent stacked membrane packages, and will not affect the strength of the entire membrane package structure. At the same time, it also reduces the difficulty of membrane package processing and the cost required for processing.

[0037] 2. A sealing ring is arranged on the packaging hole, and the end face of the sealing ring on one side away from the center of the membrane package extends to protrude from the abutment area or is flush with the abutment area. When the membrane packages are stacked and squeezed, the sealing ring can also be squeezed synchronously during the squeezing of the abutment area, thereby synchronously tightening the surrounding side of the packaging hole on the screen to improve the sealing performance around the hole.

[0038] 3. Since the peripheral packaging part is formed by the solidification of the glue, compared with the peripheral packaging part formed or infiltrated from the side wall of the screen, the setting of the glue seepage area allows the glue to squeeze the screen area as little as possible during the solidification process, and the internal stress generated during the solidification process is more easily released to the outside of the screen, which is conducive to ensuring the flatness of the screen, and the setting of the glue seepage area can increase the connection area between the screen and the peripheral packaging part, which is conducive to forming a stable connection between the peripheral packaging part and the screen, and further increasing the sealing effect around the screen. In addition, the projection of the glue seepage area and the abutment area on the end face of the peripheral packaging part can form an overlap area, then along the thickness direction of the membrane package (i.e., the force direction when the membrane package is stacked), the glue seepage area and the abutment area can overlap, when the membrane package is pressurized, the abutment area is squeezed, and the pressure can be transmitted from the abutment area and the peripheral packaging part to the glue seepage area, and the screen and filter membrane of the filter part are further pressed, which can not only ensure the flatness of the screen and the filter membrane, but also increase the sealing of the filter side. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a structural schematic diagram of one embodiment of the utility model.

[0041] Figure 2 for Figure 1 Schematic diagram of top view (partial fracture).

[0042] Figure 3 for Figure 2 A magnified schematic diagram of position B in the middle.

[0043] Figure 4 for Figure 1 Schematic diagram of the cut along section AA.

[0044] Figure 5 for Figure 4 Enlarged schematic diagram of the C position in the middle.

[0045] Figure 6It is a structural schematic diagram of the second embodiment of the utility model.

[0046] Figure 7 for Figure 6 Enlarged schematic diagram of position D in the middle.

[0047] Figure 8 It is a schematic structural diagram of the third embodiment of the utility model.

[0048] Fig. 9 It is a schematic structural diagram of the fourth embodiment of the utility model.

[0049] Fig.10 for Fig. 9 Enlarged schematic diagram of position E in the middle.

[0050] Fig.11 It is a schematic structural diagram of the fifth embodiment of the utility model.

[0051] Fig.12 for Fig.11 Enlarged schematic diagram of the F position in the middle.

[0052] Description of reference numerals:

[0053] 101. Through hole; 102. Packaging hole; 1. Filter part; 11. Screen; 12. Filter membrane; 13. First side; 14. Second side; 15. Third side; 16. Fourth side; 2. Peripheral packaging part; 3. Abutment area; 4. Give way area; 5. Glue seepage area; 6. Snap-in groove; 7. Overlap area; 8. Sealing ring; 9. Sealing gasket. DETAILED DESCRIPTION

[0054] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] 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.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0057] Embodiment 1

[0058] See also Figures 1 to 5 The embodiment of the utility model provides a membrane package, including a filter part 1 and a peripheral packaging part 2 wrapped around the filter part 1, the filter part 1 includes a screen 11 and a filter membrane 12 arranged at intervals; the screen 11 has a through hole 101 and a packaging hole 102, and the peripheral packaging part 2 has two end faces of the peripheral packaging part 2 arranged oppositely.

[0059] In actual use, in order to increase the filtration efficiency, multiple membrane packages are usually stacked for use. When multiple membrane packages are stacked for use, in order to align and clamp each membrane package, in this embodiment, the outer side wall of the peripheral packaging portion 2 is provided with an inwardly curved clamping groove 6; the curved track of the side wall of the clamping groove 6 is parallel to the outer edge of the corresponding clamping groove 6 position of the abutment area 3. When the clamp clamps the clamping groove 6 and applies force, the direction of the force F is from the center of the arc to the arc direction, see Figure 2 and Figure 3 , the force is dispersed, so that the peripheral packaging part 2 and the abutment area 3 are more evenly stressed as a whole, making the external structure more stable when clamping and squeezing the membrane package. In addition, the clamping groove 6 is distributed in an arc shape, which can also prevent the external force applied by the external structure when clamping or squeezing from acting on the screen 11 or the filter membrane 12 in a direction perpendicular to the side wall of the filter part 1, which is conducive to maintaining the flatness of the filter screen and the filter membrane 12, so as to increase the filtration efficiency of the membrane package.

[0060] See also Figure 2 The filter portion 1 has a first side 13 and a second side 14 that are oppositely disposed, and a third side 15 and a fourth side 16 that are connected between the first side 13 and the second side 14 . The through holes 101 and the connecting holes 101 are arranged in the first side 13 and the second side 14 regions.

[0061] In order to form a stable connection between the packaging hole 102 of the screen 11, the peripheral packaging part 2 and the abutment area 3, thereby facilitating increasing the connection strength of the entire membrane package, in the present embodiment, in the first side 13 and the second side 14 regions, the ratio between the width W31 of the abutment area 3 and the width W41 of the clearance area 4 is in the range of 0.3 to 3:1.

[0062] When fluid flows in the filter portion 1, the fluid flows along the third side 15 and the fourth side 16 (i.e., from the first side 13 to the second side 14 or from the second side 14 to the first side 13). The fluid resistance encountered by the third side 15 and the fourth side 16 is relatively large. In order to increase the sealing effect of the abutment area 3 in the region of the third side 15 and the region of the fourth side 16, the width of the concession area 4 in the region of the third side 15 and the region of the fourth side 16 is relatively larger, which is conducive to the deformation of the corresponding abutment area 3. Specifically, in the region of the third side 15 and the fourth side 16, the ratio of the width W32 of the abutment area 3 to the width W42 of the concession area 4 is in the range of 0.2 to 2:1.

[0063] It is worth noting that, since the actual peripheral packaging portion 2, the abutment area 3, and the clearance area 4 are not necessarily regular structures (i.e., the inner and outer wall surfaces are not necessarily arranged in parallel), in the first side 13 and the second side 14 area, the width W31 of the abutment area 3, the width W41 of the clearance area 4, and the width W32 of the abutment area 3 and the width W42 of the clearance area 4 in the third side 15 and the fourth side 16 area, when specifically measured, a vertical line can be drawn through one of the side walls, and the distance between the vertical line and the intersection between the inner wall and the outer wall is the corresponding width. For the sake of convenience, taking the width W32 of the abutment area 3 in the third side 15 and the fourth side 16 area as an example, a vertical line L1 is drawn with the outer wall surface of one position of the abutment area 3 as a reference, and the distance between the intersection point D1 of L1 and the outer wall surface of the abutment area 3 and the intersection point D2 of L1 and the outer wall surface of the abutment area 3 is recorded as W32. Of course, in order to increase the measurement accuracy, multiple groups of distances can also be measured and the average value can be taken to obtain the corresponding width value. Similarly, W31, W41 and W42 can also be measured using the same measurement method.

[0064] See also Figure 4 and Figure 5, since multiple membrane packages are subjected to an extrusion force perpendicular to the end face of the membrane package when stacked, in order to ensure that the peripheral packaging part 2 has a certain supporting effect on the filter part 1, to avoid the flow channel formed between the screen 11 and the filter membrane 12 of the filter part 1 being too small to affect the filtration efficiency during the membrane package being squeezed, and at the same time, to ensure that a stable seal can be formed between two adjacent membrane packages, in this embodiment, both side end faces of the peripheral packaging part 2 are provided with abutment areas 3, and the abutment areas 3 protrude from the end face of the peripheral packaging part 2, and the projected area of ​​the abutment areas 3 on the end face of the peripheral packaging part 2 is smaller than the area of ​​the end face of the peripheral packaging part 2, so that a clearance area 4 can be formed between the side wall of the abutment area 3 and the end face of the peripheral packaging part 2. When two adjacent membrane packages are stacked, the two membrane packages can be abutted through the abutment area 3. Compared with directly using the end face of the peripheral packaging part 2 to abut, the abutment area 3 is smaller in area and more likely to deform, thereby making the abutment of the abutment positions of the two membrane packages tighter, and further increasing the sealing between the stacked adjacent two membrane packages. In addition, the presence of the clearance area 4 can ensure that the overall thickness of the peripheral packaging part 2 is not affected while not affecting the sealing between the two adjacent stacked membrane packages, thereby not affecting the strength of the entire membrane package structure, and at the same time, it also reduces the difficulty of membrane package processing and the cost required for processing. Of course, in other implementations, the abutment area 3 can also be set on one side end surface of the peripheral packaging part 2 to ensure that the two membrane packages can abut through the abutment area 3, thereby increasing the sealing of the membrane package.

[0065] Specifically, the abutment area 3 is arranged on the inner side of the peripheral packaging part 2, and the clearance area 4 is formed on the outer side of the abutment area 3, which can increase the sealing effect between the peripheral packaging part 2 and another adjacent peripheral packaging part 2 (or the screen 11), and make the resistance when the fluid passes through smaller, and it is not easy to produce fluid accumulation in the non-filtration area formed between the two adjacent peripheral packaging parts 2, which can ensure good sealing between adjacent membrane packages and will not affect the filtration efficiency and filtration effect of the membrane packages.

[0066] It is worth noting that the "inside" and "outside" referred to in this application are relative positions, wherein "inside" refers to the side of the filtration area close to the center of the membrane package, and "outside" refers to the side of the filtration area away from the center of the membrane package.

[0067] Furthermore, the distance that the abutment zone 3 protrudes from the outermost screen 11 of the membrane package is H. When H is too large, it is easy to cause the flow channel formed between the two adjacent membrane packages to be too large after the two adjacent membrane packages are stacked, which in turn causes the fluid to be retained between the two adjacent membrane packages, affecting the overall filtration efficiency; and when H is too small, it is easy to cause the deformation amount that the abutment zone 3 can produce to be small and affect the sealing effect. At the same time, it can also avoid the flow channel formed between the two adjacent membrane packages to be too small after the abutment zone 3 is deformed and pressed tightly, which in turn causes the fluid to encounter excessive resistance when passing through the adjacent membrane packages, thereby affecting the overall filtration efficiency. Therefore, in order to ensure the sealing effect between the two adjacent membrane packages without affecting the filtration efficiency and filtration effect of the membrane packages, H satisfies: 0≦H≦50mm.

[0068] Among them, H can be measured in a variety of ways, and it is sufficient to obtain an approximate value or an accurate value. In this example, when measuring H, the outermost end face of the filter part 1 (i.e., the end face of the outermost screen 11) is roughly regarded as a plane, and the connection point between the outermost screen 11 of the filter part 1 and the peripheral packaging part 2 is taken as point D3, and the highest point of the corresponding position on the abutment area 3 is taken as point D4, and the vertical distance between point D1 and point D4 is the corresponding H.

[0069] Furthermore, the abutting area 3 and the giving way area 4 are smoothly connected. When the glue is solidified to form the abutting area 3, the giving way area 4 and the peripheral packaging part 2, the injection molding structure formed by the three can be made smoother as a whole.

[0070] See also Figure 4 and Figure 5 In order to enable the peripheral packaging part 2 to form a good seal on the outer peripheral side of the filter part 1, in the present embodiment, the thickness H2 between the two end faces of the peripheral packaging part 2 is equal to the thickness H1 of the filter part 1 (that is, the end face of the filter part 1 is flush with the end face of the peripheral packaging part 2). When the membrane package needs to be extruded, the mold can be directly pressed on the surface of the outermost screen 11 of the membrane package, so that the screen 11 and the filter membrane 12 of the filter part 1 are stacked and form a flatter surface structure, avoiding wrinkles in the filter membrane 12 or the screen 11 structure, thereby providing sufficient fluid area for the fluid to pass through, and reducing the resistance of the fluid flow in the filter part 1. Of course, in other embodiments, the thickness H2 between the two end faces of the peripheral packaging part 2 may also be greater than the thickness of the filter part 1. Similarly, when measuring H1 and H2, the two end faces of the peripheral packaging part 2 and the outermost end face of the filter part 1 can also be regarded as planes. When measuring H1, the membrane package can be cut as a whole, and the thickness of the filter part 1 at the connection between the filter part 1 and the peripheral packaging part 2 can be measured. The thickness here is the most accurate; when measuring H2, two points on the two outermost end faces of the peripheral packaging part 2 can be randomly selected, and the vertical distance between the two points is measured or calculated to be H2. Of course, it can also be directly measured using measuring instruments such as vernier calipers.

[0071] In order to increase the connection strength between the screen 11 and the peripheral packaging part 2, and thus increase the sealing of the periphery of the membrane package, in this embodiment, each screen 11 has a glue penetration area 5 in the area surrounding the periphery of the screen 11, so that the peripheral packaging part 2 can be connected and sealed to the peripheral area of ​​the screen 11. Since the peripheral packaging part 2 is formed by the solidification of the glue, compared with the peripheral packaging part 2 being formed or infiltrated from the side wall of the screen 11, the setting of the glue penetration area 5 allows the glue to squeeze the screen 11 area as little as possible during the solidification process, and the internal stress generated during the solidification process is more easily released to the outside of the screen 11, which is conducive to ensuring the flatness of the screen 11, and the setting of the glue penetration area 5 can increase the connection area between the screen 11 and the peripheral packaging part 2, which is conducive to forming a stable connection between the peripheral packaging part 2 and the screen 11, and further increasing the sealing effect around the screen 11.

[0072] Embodiment 2

[0073] See also Figure 6 and Figure 7 Based on the above-mentioned embodiment 1, the difference of this embodiment is that the projection of the glue seepage area 5 on the end surface of the peripheral packaging part 2 partially overlaps with the projection of the abutment area 3 on the end surface of the peripheral packaging part 2, and the overlapping part forms an overlap area 7. When the end surface of the membrane package is pressed, the abutment area 3 is squeezed, and the pressure can be transmitted from the abutment area 3 and the peripheral packaging part 2 to the glue seepage area 5, further pressing the screen 11 and the filter membrane 12 of the filter part 1, which can not only ensure the flatness of the screen 11 and the filter membrane 12, but also increase the sealing performance of the peripheral side of the filter part 1.

[0074] Specifically, the overlap area 7 is formed around the outside of the glue penetration area 5. When the membrane package is pressurized, the squeezing force applied to the overlap area 7 can increase the compression effect on the entire periphery of the screen 11 and the filter membrane 12, further increasing the sealing performance around the filter part 1.

[0075] Further, the ratio of the width W07 of the overlap area 7 to the width W05 of the glue seepage area 5 is in the range of 0.2 to 2:1; the ratio of the width W07 of the overlap area 7 to the width W03 of the abutment area 3 is in the range of 0.2 to 1:1. On the one hand, the connection strength of the screen 11 and the peripheral packaging part 2 can be guaranteed, and the flatness and sealing of the screen 11 can be further ensured; on the other hand, the overlap area 7 surrounds the outside of the glue seepage area 5, and the reasonable setting of the width can make the periphery of the screen 11 evenly stressed, so as to increase the flatness of the screen 11 and the filter membrane 12, thereby reducing the fluid flow resistance and increasing the filtration efficiency. In addition, the overlap area 7 surrounds the outside of the glue seepage area 5. When the membrane package is squeezed, the stress area around the screen 11 (i.e., the overlap area 7) can be located on the side of the glue seepage area 5 away from the center of the membrane package, thereby not affecting the effective diversion area of ​​the screen 11, and further increasing the filtration efficiency of the membrane package.

[0076] Furthermore, the glue seepage area 5 protrudes from the filter membrane 12 , so that the end surface of the glue seepage area 5 is exposed, which can increase the adhesion area between the peripheral packaging part 2 and the glue seepage area 5 , and further increase the connection strength between the peripheral packaging part 2 and the screen 11 .

[0077] Embodiment 3

[0078] See also Figure 8 Based on the above-mentioned first embodiment, the difference of this embodiment is that the packaging hole 102 of the outermost screen 11 is provided with a sealing ring 8; the sealing ring 8 is arranged around the packaging hole 102 of the screen 11, and extends from the end face of the side of the screen 11 away from the center of the membrane package to be flush with the abutment area 3. When the membrane package is stacked and extruded, the sealing ring 8 can also be extruded synchronously during the extrusion of the abutment area 3, thereby synchronously tightening the surrounding side of the packaging hole 102 on the screen 11, thereby improving the sealing performance around the hole. Of course, in other embodiments, the sealing ring 8 can also extend from the end face of the side of the screen 11 away from the center of the membrane package to protrude from the abutment area 3.

[0079] Furthermore, the hardness of the sealing ring 8 is smaller than that of the peripheral packaging part 2, so as to press against the outermost screen 11 or the sealing ring 8 of another membrane package adjacent thereto. When the membrane package is further squeezed, the peripheral packaging part 2 and the sealing ring 8 will be squeezed at the same time. Compared with the peripheral packaging part 2, the hardness of the sealing ring 8 is smaller than that of the peripheral packaging part 2, and its elastic deformation is larger, which can further produce an elastic pressing effect, and further increase the sealing performance around the packaging hole 102 on the screen 11. In general, the hardness of the peripheral packaging part 2 is generally above 80 Shore D, and it can be made of polyurethane, epoxy resin and other materials. It can be integrally formed with the packaging structure around the packaging hole 102 on the outermost screen 11, or it can be additionally arranged on the outside of the screen 11.

[0080] It should be noted that when measuring H1, the thickness of the sealing ring 8 protruding from the filter part 1 is not included in H1.

[0081] Furthermore, in order to further increase the sealing effect of the packaging hole 102 and facilitate the processing of the sealing ring 8, in this embodiment, the sealing ring 8 is welded to the periphery of the packaging hole 102 on the outer screen 11. The sealing ring 8 is smaller in size than the peripheral packaging part 2. The use of welding can not only form a stable connection between the sealing ring 8 and the outermost screen 11, but also facilitate the processing of the sealing ring 8 and the outermost screen 11, so as to avoid the sealing ring 8 occupying too large an area on the screen 11, affecting the effective flow guide area of ​​the screen 11, and further affecting the filtering efficiency.

[0082] Embodiment 4

[0083] See also Fig. 9 and Fig.10, a sealing gasket 9 is arranged on the abutting area 3, and the sealing gasket 9 is used for extrusion sealing with the membrane package or the clamp adjacent to the membrane package. It can be known that when two membrane packages are stacked on each other, the sealing between the two adjacent membrane packages and between the membrane package and the clamp can be increased. Of course, in other embodiments, the sealing gasket 9 can also be arranged only in the clearance area 4 or in both the clearance area 4 and the abutting area 3, so as to achieve extrusion sealing between adjacent membrane packages or between a membrane package and a clamp.

[0084] In addition, it is worth mentioning that although the sealing ring 8, sealing gasket 9, abutment area 3, clearance area 4, etc. are provided on both side end faces of the membrane package in the above embodiment, it is not limited to both side end faces of the membrane package. It can also be provided on only one side end face. When the membrane packages are stacked, the side end face with the corresponding structure can be aligned with the side end face of the other membrane package without the corresponding structure.

[0085] Embodiment 5

[0086] See also Fig.11 and Fig.12 Based on the above-mentioned embodiment 1, the difference of this embodiment is that the abutment area 3 is arranged on the inner side of the peripheral packaging part 2, and the clearance area 4 is formed on the outer side of the abutment area 3. This arrangement can increase the supporting effect of the abutment area and the peripheral packaging part 2 on the entire membrane package, and at the same time, can increase the sealing performance around the membrane package.

[0087] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A membrane package, comprising a filter portion and a peripheral packaging portion arranged around the filter portion, wherein the filter portion comprises a screen and a filter membrane arranged at intervals; the screen has through holes and packaging holes, characterized in that: The peripheral packaging part has two peripheral packaging part end surfaces that are arranged opposite to each other, and a contact area is provided on at least one end surface of the peripheral packaging part, and the contact area protrudes from the peripheral packaging part end surface; The projected area of ​​the abutting area on the end surface of the peripheral packaging portion is smaller than the area of ​​the end surface of the peripheral packaging portion, so that a clearance area can be formed between the side wall of the abutting area and the end surface of the peripheral packaging portion.

2. A membrane package according to claim 1, characterized in that: The contact area is disposed around the inner side of the peripheral packaging portion, and the clearance area is formed around the outer side of the contact area.

3. A membrane package according to claim 2, characterized in that: The distance that the abutment area protrudes from the outermost screen of the membrane package is H, and H satisfies: 0≦H≦50mm.

4. A membrane package according to any one of claims 1 to 3, characterized in that: The thickness between two end surfaces of the peripheral packaging portion is not less than the thickness of the filter portion.

5. A membrane package according to any one of claims 1 to 3, characterized in that: The packaging hole of the outermost screen is provided with a sealing ring; The sealing ring is arranged around the periphery of the packaging hole of the screen, and extends from the end surface of one side of the screen away from the center of the membrane package to protrude from the abutment area or be flush with the abutment area.

6. A membrane package according to claim 5, characterized in that: The hardness of the sealing ring is smaller than that of the peripheral packaging part, so as to press against the outermost screen or sealing ring of another membrane package adjacent thereto; the hardness of the peripheral packaging part is not less than 80 Shore D.

7. A membrane package according to claim 5, characterized in that: The sealing ring is welded to the periphery of the packaging hole of the outer screen.

8. A membrane package according to any one of claims 1 to 3, characterized in that: At least part of the screen has a glue penetration area around the periphery of the screen for glue to penetrate, so that the peripheral packaging part can be connected and sealed to the peripheral area of ​​the screen, and the glue penetration area protrudes from the filter membrane.

9. A membrane package according to claim 8, characterized in that: The projection of the glue seepage area on the end surface of the peripheral packaging part partially overlaps with the projection of the abutment area on the end surface of the peripheral packaging part, and the overlapping part forms an overlap area.

10. A membrane package according to claim 9, characterized in that: The overlap area is formed around the outside of the glue seepage area; The ratio of the width of the overlap area to the width of the glue seepage area is in the range of 0.2 to 2:1; The ratio of the width of the overlap area to the width of the abutment area ranges from 0.2 to 1:

1.

11. A membrane package according to claim 2, characterized in that: The filter portion has a first side and a second side that are arranged opposite to each other, and a third side and a fourth side that are connected between the first side and the second side, and the through holes and the connecting holes are arranged in the first side and the second side regions; In the first side and the second side regions, the ratio of the width between the contact area and the clearance area is in the range of 0.3 to 3:

1. and / or In the third side and the fourth side regions, the ratio of the width between the contact area and the clearance area is in the range of 0.2 to 2:

1.

12. A membrane package according to claim 2, characterized in that: The outer side wall of the peripheral packaging part is provided with an inwardly bent clamping groove; The curved track of the side wall of the clamping groove is parallel to the outer edge of the corresponding clamping groove position of the abutting area.

13. A membrane package according to claim 1, characterized in that: The contact area and the clearance area are smoothly connected.

14. A membrane package according to claim 1, characterized in that: A sealing gasket is arranged on the abutting area, and / or a sealing gasket is arranged on the giving way area, and the sealing gasket is used for extrusion sealing with the membrane package or the clamp adjacent to the membrane package.

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