Film bag

Abstract

The membrane bag comprises a filtering part, and the filtering part comprises a screen and a filtering layer; the membrane bag further comprises a rigid shell arranged around the screen and the peripheral edge of the filter layer, the rigid shell is formed by curing a glue solution and protrudes out of the side wall face of the filter part, the rigid shell is provided with a protruding part protruding out of the filter part and a permeation area permeating into the edge of the screen, and the width of the protruding part ranges from 1 mm to 5 mm; the hardness of the rigid shell is greater than or equal to 60 shore D; at least part of the edge of the screen protrudes out of the edge of the filter layer, and a glue filling area allowing a rigid shell glue solution to permeate is formed in the edge area of the filter part; the connector has the advantages of being good in sealing performance, stable in connection and high in deformation resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of filtering equipment, in particular to a membrane package. BACKGROUND

[0002] The membrane package usually comprises a filter part and a sealing structure, wherein the filter part is formed by stacking an inlet unit and a filtrate unit, and the sealing structure usually comprises an outer peripheral rubberizing part arranged around the outer periphery of the filter part, thereby realizing the sealing of the peripheral region of the filter part.

[0003] The conventional outer peripheral rubberizing part is usually formed by silica gel extraction and solidification, but due to the characteristics of the silica gel material, the silica gel rubberizing part formed after solidification has a soft texture and weak resistance to deformation, so that the membrane package produced is prone to deformation during use or transportation if affected by external force, thereby affecting the flatness of the entire membrane package. When the screen and the silica gel rubberizing part are pulled due to external force, the connection stability between the two is weakened, and even the screen is separated from the silica gel rubberizing part, further affecting the sealing performance of the entire membrane package.

[0004] Therefore, it is urgent for the technical personnel in the field to provide a membrane package with stable connection of the filter part and the sealing structure of the outer peripheral edge, good sealing performance, and strong resistance to deformation of the entire membrane package. SUMMARY

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art and provide a membrane package.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A membrane package comprises a filter part, wherein the filter part comprises a screen and a filter layer;

[0008] The membrane package further comprises a rigid shell arranged around the outer peripheral edge of the screen and the filter layer,

[0009] The rigid shell is formed by solidification of glue liquid and protrudes from the side wall surface of the filter part, and the rigid shell has a protruding part protruding from the filter part and a penetration area penetrating into the edge of the screen, and the width of the protruding part is 1-5 mm;

[0010] The hardness of the rigid shell is greater than or equal to 60 shao D;

[0011] At least part of the edge of the screen protrudes from the edge of the filter layer, and a glue-filling area for the penetration of the glue liquid of the rigid shell is formed in the edge region of the filter part.

[0012] By the technical scheme, the rigid shell has a certain hardness and is formed at the outer peripheral edge of the screen and the filter layer, so that the membrane package can be directly fixed as a whole in a complete form, avoiding deformation of the membrane package in use and transportation, and improving the flatness of the membrane package as a whole. Meanwhile, the rigid shell is formed by curing of the glue solution, so that in the forming process, on the one hand, the rigid shell can penetrate into the edge of the screen and be cured into a penetration area, increasing the connection strength of the rigid shell and the edge of the screen, and further increasing the flatness of the screen; on the other hand, the rigid shell can flow and fill into the edge area of the filter part to form a glue filling area, so that the edge area of the filter part can be supported by the rigid shell, increasing the bonding effect, flatness and sealing effect of the entire filter part. In addition, the rigid shell also has a protruding part protruding from the side wall surface of the filter part, and the protruding part has a reasonable width, which not only ensures that the whole is not easy to be bent by external force, improves the anti-deformation ability of the membrane package, but also reduces the flatness problem that may be caused by the different shrinkage rates of the outer peripheral shell and the internal structure. The glue filling area is arranged between the screens, which can also be limited and supported by the screens on both sides, further increasing the anti-deformation ability of the entire membrane package.

[0013] It is worth noting that the "protruding from the filter part" referred to here refers to the edge area of the entire filter part in the projection direction, that is, the edge area of the entire filter part protruding outward. For example, when there is a size difference between the screens, the edge area of the entire filter part is the edge area of the largest screen, that is, the protruding part protrudes outward from the largest screen; when the sizes of all screens and all filter layers are consistent, the edge area of the entire filter part is the edge area of any screen or any filter layer.

[0014] Preferably, the screen includes a filtrate screen and a liquid inlet screen;

[0015] The filtrate screen and the adjacent filter layer are stacked to form a pre-packaging assembly;

[0016] The liquid inlet screen and the pre-packaging assembly are stacked to form the filter part;

[0017] In the pre-packaging assembly, the edge of the filtrate screen protrudes from the edge of the filter layer, the edge of the liquid inlet screen is flush with the edge of the filtrate screen, and the glue filling area is arranged around the periphery of the filter layer;

[0018] Or;

[0019] The edge of the liquid inlet screen protrudes from the pre-packaging assembly, and the glue filling area includes a first glue filling area arranged around the periphery of the filter layer and a second glue filling area arranged around the periphery of the filtrate screen.

[0020] By the above technical solution, the filtrate screen and the adjacent filter layer are stacked into the pre-packaging assembly, so that the filtrate screen can support the filter layer and stably connect with the filter layer, and then the pre-packaging assembly is stacked with the liquid inlet screen into the filter part, thereby avoiding the influence of the stacking process of the filter part on the flatness of the filter layer. Further, when the edge of the filtrate screen protrudes from the filter layer and the edge of the liquid inlet screen is flush with the edge of the filtrate screen, on the one hand, the membrane package has a larger filtering area and improves the filtering efficiency of the membrane package while ensuring the sealing and flatness of the membrane package; on the other hand, the glue solution of the rigid shell can be guided to better penetrate into the edge of the screen to form a penetration zone, thereby improving the combination ability and effect of the rigid shell and the screen, and further improving the flatness and sealing of the membrane package. When the liquid inlet screen has a larger size (area) and the liquid inlet screen protrudes from the pre-packaging assembly, the convenience of stacking the membrane package can be improved, and the liquid inlet screen can cover the filter layer, thereby enabling the liquid inlet screen to protect the filter layer at the edge.

[0021] Preferably, the penetration zone includes a liquid inlet penetration zone penetrating into the edge of the liquid inlet screen, the liquid inlet penetration zone is connected to the surface of the pre-packaging assembly, and the fitting area of the liquid inlet penetration zone and the pre-packaging assembly does not overlap with the effective filtering area of the filter layer.

[0022] By the above technical solution, the liquid inlet penetration zone is fitted with the surface of the pre-packaging assembly, which improves the firmness of the combination of the rigid shell and the filter part, and also improves the sealing between the edge of the liquid inlet screen, the liquid inlet screen and the packaging assembly, and improves the stability of the overall structure. The fitting area of the liquid inlet penetration zone and the pre-packaging assembly does not overlap with the effective filtering area of the filter layer, which can ensure the filtering efficiency of the whole membrane package. It should be noted that the "fitting connection" referred to here can be one or a combination of abutment and bonding.

[0023] Preferably, the edge of the liquid inlet screen protrudes from the pre-packaging assembly, the glue filling area includes a first glue filling area arranged around the periphery of the filter layer and a second glue filling area arranged around the periphery of the filtrate screen, and the width ratio of the first glue filling area to the second glue filling area is 1:0.5-1.

[0024] By the above technical solution, the width ratio of the first glue filling area and the second glue filling area is reasonably set, which can effectively control the width of the area where the edge of the filtrate screen protrudes from the edge of the filter layer, and can increase the edge sealing effect and connection stability of the whole filter part.

[0025] Preferably, the width of the glue filling area is 0.5-5mm, and / or the width ratio of the glue filling area to the penetration zone is 0.5-0.95:1.

[0026] By the technical scheme, by reasonably setting the width of the glue-filling area and the penetration area, on one hand, the rigid shell has a certain thickness to ensure its supporting strength and anti-deformation ability, meanwhile, the penetration area and the screen mesh have sufficient connecting area to ensure the connecting strength of the two, thereby increasing the flatness of the screen mesh; on the other hand, the rigid shell can avoid occupying a large effective filtering area of the screen mesh, so that the membrane package has the advantages of stability, anti-deformation ability and filtering efficiency.

[0027] Preferably, the ratio of the width of the glue-filling area to the width of the protruding part is 1-5:1.

[0028] By the technical scheme, the width of the glue-filling area and the protruding part is reasonably set, so that the rigid shell is not easy to deform in the curing process, thereby avoiding causing the whole membrane package to warp.

[0029] Preferably, the two side end faces of the filtering part are provided with sealing parts, and the outermost side of the filtering part is provided with the screen mesh, and the sealing parts are bonded to the end faces of the outermost screen mesh of the filtering part.

[0030] By the technical scheme, the sealing cover is provided, and the sealing parts are bonded to the end faces of the screen mesh, so that good sealing and bonding performance is formed between the screen mesh and the sealing parts, meanwhile, the end faces of the screen mesh are limited by the sealing parts, thereby further maintaining the integrity of the whole membrane package, avoiding the membrane package from being easy to deform in the process of use and transportation, and improving the flatness of the whole membrane package.

[0031] Preferably, the rigid shell is arranged around the circumferential side of the filtering part and located between the two layers of sealing parts, and the rigid shell is bonded or fixedly connected with the sealing parts at least in the penetration area.

[0032] By the technical scheme, good sealing connection is formed between the rigid shell, the sealing parts and the liquid inlet screen mesh, and the rigid shell is limited by the sealing parts to limit the flow of the glue solution of the rigid shell, thereby avoiding the liquid inlet penetration area of the rigid shell from protruding from the surface of the screen mesh, and ensuring the flatness of the whole membrane package. Meanwhile, the glue can be scraped by taking the outer circumferential edge of the sealing part as a boundary during processing, so as to ensure the flatness of the outer circumferences of the whole membrane package.

[0033] Preferably, the rigid shell covers the filtering part and the sealing part from the side faces of the filtering part and the sealing part, and the rigid shell is fixedly connected with the sealing parts at the penetration area and the circumferential edge of the sealing parts.

[0034] By the technical scheme, the connecting area of the sealing parts and the rigid shell can be effectively increased, thereby further increasing the sealing performance and connecting stability between the rigid shell, the sealing parts and the liquid inlet screen mesh.

[0035] Preferably, the sealing part edge protrudes from the filtering part edge and forms a joint area with the side wall surface of the filtering part;

[0036] The rigid shell is filled in the joint area and is fixedly connected with the sealing part in the joint area and the permeation area.

[0037] Through the above technical solution, the rigid shell is filled in the joint area, and the joint area and the permeation area are fixedly connected with the sealing part, which can form a good sealing connection among the rigid shell, the sealing part and the screen surface, and can also limit the rigid shell by the sealing part to limit the flow of the glue solution of the rigid shell, avoid the permeation area of the rigid shell protruding from the screen surface, and ensure the flatness of the whole membrane package.

[0038] Compared with the prior art, the utility model has at least the following beneficial effects:

[0039] 1. The rigid shell has a certain hardness and is formed at the outer peripheral edge of the screen and the filtering layer, so that it can directly fix the whole membrane package into a complete shape, avoids the membrane package from being easily deformed during use and transportation, and improves the flatness of the whole membrane package. Meanwhile, the rigid shell is formed by solidifying the glue solution, so that during the forming process, on one hand, it can penetrate into the edge of the screen and solidify into the permeation area, increase the connection strength between the rigid shell and the edge of the screen, and further increase the flatness of the screen; on the other hand, it can flow and fill into the glue filling area formed at the edge area of the filtering part, so that the edge area of the filtering part can be supported by the rigid shell, increase the adhesion effect, flatness and sealing effect of the whole filtering part. In addition, the rigid shell also has a protruding part protruding from the side wall surface of the filtering part, and the protruding part has a reasonable width, which can ensure that the rigid shell has a certain anti-deformation ability to ensure the flatness of the membrane package, and also increase the sealing effect on the filtering part. The glue filling area is arranged between the screens, so that it can be limited and supported by the two screens, and further increase the anti-deformation ability of the whole membrane package.

[0040] 2. The filtrate screen and its adjacent filter layer are stacked to form a pre-encapsulated assembly. This allows the filtrate screen to support the filter layer and maintain a stable connection. The pre-encapsulated assembly is then stacked with the inlet screen to form the filter section. This avoids affecting the flatness of the filter layer during the stacking process. Furthermore, when the edge of the filtrate screen protrudes beyond the filter layer, and the edge of the inlet screen is flush with the edge of the filtrate screen, on the one hand, it allows the membrane package to have a larger filtration area while maintaining its sealing and flatness, thus improving the filtration efficiency. On the other hand, it guides the adhesive in the rigid shell to better penetrate to the edge of the screen to form a penetration zone, improving the bonding ability and effect between the rigid shell and the screen, further enhancing the flatness and sealing of the membrane package. When the inlet screen has a larger size (area) and protrudes beyond the pre-encapsulated assembly, it improves the ease of membrane package stacking, and the inlet screen can cover the filter layer, thus protecting the filter layer at its edges.

[0041] 3. By setting a sealing cap and bonding the sealing part to the end face of the screen, a good sealing and bonding performance can be formed between the screen and the sealing part. At the same time, the sealing part can also limit the end face of the screen, further maintaining the integrity of the entire film package, preventing the film package from easily deforming during use and transportation, and improving the overall flatness of the film package. Attached Figure Description

[0042] 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.

[0043] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0044] Figure 2 for Figure 1 An enlarged diagram of position D1.

[0045] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0046] Figure 4 for Figure 3 An enlarged view of position D2 in the middle.

[0047] Figure 5 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0048] Figure 6 forFigure 5 Enlarged schematic view of the D3 position.

[0049] Figure 7 Structure schematic view of the embodiment four of the present application.

[0050] Figure 8 For Figure 7 Enlarged schematic view of the D4 position.

[0051] Figure 9 Structure schematic view of the embodiment five of the present application.

[0052] Figure 10 For Figure 7 Enlarged schematic view of the D5 position.

[0053] Explanation of reference signs:

[0054] 1, screen; 11, liquid inlet screen; 12, filtrate screen; 120, edge pre-packaging part; 2, filter layer; 3, rigid shell; 31, protruding part; 32, permeation area; 321, liquid inlet permeation area; 322, filtrate permeation area; 33, combination area; 4, rubber filling area; 41, first rubber filling area; 42, second rubber filling area; 5, sealing part. DETAILED DESCRIPTION

[0055] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0056] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0057] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can indirectly connect through the intermediate medium, can be two elements inside the intercommunication. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according of the specific circumstances.

[0058] Embodiment one

[0059] Referring to Figure 1 And Figure 2 The utility model embodiment provides a membrane package, including filter part, filter part includes screen 1 and filter layer 2, screen 1 and filter layer 2 are alternately stacked and form filter part. Specifically, the both sides end face of filter part is preferably provided as screen 1, that is, when filter layer 2 is provided with N (N≥1) layers, screen 1 is provided with N+1 layers, and the corresponding layer number can be set according to actual demand. In order to facilitate the explanation, two filter layers 2 and three screen 1s in the embodiment are taken as examples for description.

[0060] The membrane package further includes a rigid shell 3 disposed around the outer peripheral edges of the screen 1 and the filter layer 2, the rigid shell 3 is formed by curing a glue solution, and protrudes from the side wall surface of the filter part; and the rigid shell 3 has a hardness of not less than 60 shore D, so that it is formed at the outer peripheral edges of the screen 1 and the filter layer 2, and can directly fix the filter part as a whole in a complete form, thereby avoiding the membrane package from being easily deformed during use and transportation, and further improving the flatness of the membrane package as a whole. Specifically, the rigid shell 3 can be made of a thermosetting epoxy resin material, and the hardness of the cured rigid shell 3 is usually 60-80 shore D.

[0061] Further, the rigid shell 3 has a protruding portion 31 protruding from the filter part and a penetration zone 32 penetrating into the edge of the screen 1, wherein the width W31 of the protruding portion 31 can be 1 mm, 3 mm or 5 mm, of course, as long as the value range of W31 satisfies 1-5 mm. It is worth noting that the "protruding from the filter part" here refers to the edge region of the whole filter part, that is, the edge region of the projection of the filter part in the thickness direction. For example, when there is a size difference between the screens 1, the edge region of the whole filter part is the edge region of the largest screen 1, that is, the protruding portion 31 protrudes from the outer edge of the largest screen 1 (i.e. in the embodiment, see Figure 1 And Figure 2 When the sizes of all screens 1 and all filter layers 2 are consistent, the edge region of the whole filter part is the edge region of any screen 1 or any filter layer.

[0062] It should be understood that, in the process of curing the glue solution, on the one hand, the glue solution can penetrate into the edges of the screen 1 and solidify into the penetration zones 32, increasing the connection strength between the rigid shell 3 and the edges of the screen 1, and further increasing the flatness of the screen 1; on the other hand, the glue solution can solidify into the protruding portions 31 protruding from the filter portion, and the protruding portions 31 are provided with a reasonable width, which can ensure that the rigid shell 3 has a certain deformation resistance strength to ensure the flatness of the membrane package, and can also increase the sealing effect on the filter portion.

[0063] In order to ensure the flatness and sealing effect of the filter portion, the edges of the screen 1 protrude from the edges of the filter layer 2 to form a glue filling area 4 for the glue solution of the rigid shell 3 to penetrate, so that the glue solution of the rigid shell 3 can penetrate into the edge area of the screen 1 protruding from the filter layer 2 through the glue filling area 4, facilitating the solidification of the penetration zones 32 on the screen 1 and increasing the flatness of the screen 1. The rigid shell 3 filled in the glue filling area 4 can increase the adhesion and sealing effect between the filter layer 2 and the screen 1, and the glue filling area 4 is located between the screens 1, which can also be supported by the screens 1 on both sides, further increasing the deformation resistance of the entire membrane package.

[0064] Referring to Figure 1 and Figure 2 In the embodiment, the screen 1 includes a liquid inlet screen 11 and a filtrate screen 12, and the filtrate screen 12 and the filter layer 2 adjacent thereto are stacked to form a pre-packaged assembly, and the liquid inlet screen 11 and the pre-packaged assembly are stacked to form a filter portion. Specifically, the screen 1 is provided with three layers, including one layer of filtrate screen 12 and two layers of liquid inlet screen 11, and the liquid inlet screen 11 is located at the end side of the filter portion; the filter layer 2 is provided with two layers, and one layer of filter layer 2 is arranged on both sides of the filtrate screen 12. The pre-packaged assembly can be obtained by welding, glue curing or other packaging methods. In this scheme, the filtrate screen 12 and the filter layer 2 adjacent thereto are stacked to form a pre-packaged assembly, so that the filtrate screen 12 supports and connects with the filter layer 2, and then the pre-packaged assembly is stacked with the liquid inlet screen 11 to form a filter portion, thereby avoiding the influence of the stacking process of the filter portion on the flatness of the filter layer 2. It should be understood that the pre-packaged assembly provided in the embodiment is one layer, and one layer of liquid inlet screen 12 is stacked at both ends of the pre-packaged assembly. Of course, in other embodiments, two, three or more layers of pre-packaged assemblies can be provided, and correspondingly, three, four or more layers of liquid inlet screens 12 can be provided. The actual filtering requirements can be set to ensure that the liquid inlet screen 12 and the pre-packaged assembly are alternately stacked.

[0065] It can be understood that the filtrate screen 12 and the filter layer 2 can be packaged into a pre-packaged assembly by the edge pre-packaging part 120. The edge pre-packaging part 120 can be provided by welding the filter layer 2 on the filtrate screen 12, or by injecting glue around the peripheral area of the filter layer 2 to achieve packaging.

[0066] Specifically, in the pre-packaged assembly, the edge of the filtrate screen 12 protrudes from the edge of the filter layer 2, the edge of the inlet screen 11 is flush with the edge of the filtrate screen 12, and the glue filling area 4 is arranged around the periphery of the filter layer 2. On the one hand, the membrane package can have a larger filtering area while ensuring the sealing and flatness of the membrane package, thereby improving the filtering efficiency of the membrane package. On the other hand, the glue solution of the rigid shell 3 can be guided to better penetrate into the edges of the inlet screen 11 and the filtrate screen 12 to form the penetration area 32, thereby improving the combination ability and effect of the rigid shell 3 and the screen 1, and further improving the flatness and sealing of the membrane package.

[0067] Further, the penetration area 32 includes an inlet penetration area 321 that penetrates into the edge of the inlet screen 11. The inlet penetration area 321 is connected to the surface of the pre-packaged assembly, thereby improving the firmness of the combination of the rigid shell 3 and the filter part, and also improving the sealing between the edge of the inlet screen 11, the inlet screen 11 and the packaged assembly, and the stability of the overall structure. It should be noted that the "fitting connection" referred to herein can be one or a combination of abutment and bonding.

[0068] Further, the fitting area of the inlet penetration area 321 and the pre-packaged assembly does not overlap with the effective filtering area of the filter layer 2, thereby ensuring the filtering efficiency of the entire membrane package. It can be understood that the "non-overlapping" referred to herein means that the inner edge (close to the center of the membrane package) of the inlet penetration area 321 is flush with the inner edge of the edge pre-packaging part 120, or is located outside the edge pre-packaging part 120.

[0069] In addition, it should be noted that the penetration area 32 also includes a filtrate penetration area 322 that penetrates into the edge of the filtrate screen 12. The width of the filtrate penetration area 322 is consistent with that of the inlet penetration area 321. Of course, the width of the filtrate penetration area 322 can also be smaller than that of the inlet penetration area 321, for example, the outer edge of the packaging area of the filtrate screen 12 and the filter layer 2 is the inner edge of the filtrate penetration area 322 (due to the limitation of the packaging area of the pre-packaged assembly).

[0070] Referring to Figure 1 and Figure 2In the embodiment, the width W4 of the glue filling area 4 can be set to 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm. By reasonably setting the width of the glue filling area 4 and the penetration area 32, on the one hand, the rigid shell 3 can have a certain thickness to ensure its supporting strength and anti-deformation ability, and at the same time, the penetration area 32 and the screen 1 have sufficient connecting area to ensure the connecting strength of the two, thereby increasing the flatness of the screen 1; on the other hand, the rigid shell 3 can avoid occupying a large effective filtering area of the screen 1, so that the membrane package has the advantages of stability, anti-deformation ability and filtering efficiency.

[0071] Referring to Figure 1 and Figure 2 , the ratio of the width W4 of the glue filling area 4 to the width W32 of the penetration area 32 can be set to 0.5, 0.6, 0.7, 0.8 or 0.95. Usually, W4 is slightly smaller than W32 to facilitate the edge pre-packaging part 120.

[0072] Of course, in other embodiments, the liquid inlet screen 11, the filtrate screen 12 and the filter layer 2 can be alternately stacked in sequence, that is, the filtrate screen 12 and the filter layer 2 are not packaged, and at this time, W4 is slightly smaller than W32, which is beneficial to the glue penetrating into the penetration area 32 to be extruded once to the end face of the filter layer 2 to increase the sealing effect of the filter layer 2 and the compression effect of the edge of the filter layer 2, and at the same time, the effective filtering area of the filter layer 2 does not overlap with the penetration area 32, which affects the filtering efficiency.

[0073] Referring to Figure 1 and Figure 2 , the ratio of the width W4 of the glue filling area 4 to the width of the protruding part 31 can be set to 1, 3 or 5; it should be understood that the value range of this ratio can be 1-5, and then by reasonably setting the width ratio of the glue filling area 4 and the protruding part 31, the rigid shell 3 is not easy to deform during the curing process, thereby avoiding causing the whole membrane package to warp.

[0074] Embodiment two

[0075] Referring to Figure 3 and Figure 4 , based on the above embodiment one, the difference of the embodiment is that the both side end faces of the filter part are provided with the sealing part 5, the outermost side of the filter part is provided with the liquid inlet screen 11, and the sealing part 5 is bonded to the end face of the liquid inlet screen 11 at the outermost side of the filter part. The liquid inlet screen 11 between the sealing parts 5 can form good sealing and bonding performance, and at the same time, the sealing part 5 can also limit the end face of the liquid inlet screen 11, further maintain the complete form of the whole membrane package, avoid the membrane package from being easily deformed during use and transportation, and improve the flatness of the whole membrane package.

[0076] Further, in the embodiment, the edge of the sealing part 5 is flush with the edge of the liquid inlet screen 11. It should be understood that the sealing part 5 is first bonded to the end face of the liquid inlet screen 11, and then the glue is extracted, so that the permeation area 32 (i.e. the liquid inlet permeation area 321) of the rigid shell 3 can permeate the liquid inlet screen 11 and be bonded to the end face of the sealing part 5, and the protruding part 31 of the rigid shell 3 further includes a portion solidified to the side wall of the sealing part 5, further increasing the bonding performance and sealing performance of the entire membrane package.

[0077] Of course, in other embodiments, the outermost side of the filtering part can also be provided with the filtrate screen 12, and at this time, the sealing part 5 is bonded to the end face of the filtrate screen 12 on the outermost side of the filtering part.

[0078] It should be noted that the embodiment shown in the embodiment Figure 3 and Figure 4 is that the liquid inlet screen 11, the filtrate screen 12 and the filtering layer 2 are alternately stacked in sequence, i.e. the filtrate screen 12 and the filtering layer 2 are not encapsulated. Of course, the filtrate screen 12 and the filtering layer 2 can also be encapsulated.

[0079] Embodiment three

[0080] Referring to Figure 5 and Figure 6 , based on the above-mentioned embodiment two, the difference of the embodiment is that the edge of the sealing part 5 protrudes from the edge of the filtering part, and a combination area 33 is formed between the edge of the sealing part 5 and the side wall of the filtering part; the rigid shell 3 is filled in the combination area 33, and the rigid shell 3 is fixedly connected to the sealing part 5 in the combination area 33 and the permeation area 32. It can be understood that in the embodiment, the outermost side of the filtering part is the liquid inlet screen, so the rigid shell 3 is fixedly connected to the sealing part in the combination area 33 and the liquid inlet permeation area 321. When the glue is extracted, the rigid shell 3 is filled in the combination area 33, and the combination area 33 and the liquid inlet permeation area 321 are fixedly connected to the sealing part 5, which can not only form a good sealing connection between the rigid shell 3, the sealing part 5 and the surface of the liquid inlet screen 11, but also limit the flow of the glue of the rigid shell 3 by using the sealing part 5 to limit the rigid shell 3, so as to avoid the liquid inlet permeation area 321 of the rigid shell 3 protruding from the surface of the screen 1, and ensure the flatness of the entire membrane package.

[0081] Embodiment four

[0082] Referring to Figure 7 and Figure 8, based on the above embodiment three, the difference of the present embodiment is that the edge of the liquid inlet screen 11 protrudes from the pre-packaged assembly, and the glue filling area 4 includes a first glue filling area 41 arranged around the periphery of the filter layer 2 and a second glue filling area 42 arranged around the periphery of the filtrate screen 12. Specifically, the filter layer 2 is flush with the edge of the filtrate screen 12, and the edge of the liquid inlet screen 11 protrudes from the filter layer 2 and the filtrate screen 12. When the liquid inlet screen 11 has a larger size (area), the liquid inlet screen 11 protrudes from the pre-packaged assembly, which can improve the convenience of stacking the membrane package, and the liquid inlet screen 11 can cover the filter layer 2, thereby enabling the liquid inlet screen 11 to protect the filter layer 2 at the edge.

[0083] Specifically, the edge of the liquid inlet screen 11 protrudes from the pre-packaged assembly, and the glue filling area 4 includes a first glue filling area 41 arranged around the periphery of the filter layer 2 and a second glue filling area 42 arranged around the periphery of the filtrate screen 12, and the ratio of the width of the first glue filling area 41 to the width of the second glue filling area 42 is 1. Of course, in other embodiments, the ratio of the width of the first glue filling area 41 to the width of the second glue filling area 42 can be 1:0.5, 1:0.6, 1:0.75 or 1:0.85, i.e. the filtrate screen 12 protrudes from the filter layer 2 on both sides, and the ratio of the width of the first glue filling area 41 to the width of the second glue filling area 42 can be in the range of 1:0.5-1. It should be understood that when the width ratio of the first glue filling area 41 to the second glue filling area 42 is 1, the filter layer 2 and the filtrate screen 12 are flush at the edge, and when the width ratio of the first glue filling area 41 to the second glue filling area 42 is less than 1, the edge of the filtrate screen 12 protrudes from the filter layer 2, i.e. the edge of the filtrate screen 12 can also protrude from the filter layer 2, and the edge of the liquid inlet screen 11 protrudes from the filtrate screen 12.

[0084] It is worth noting that reasonable setting of the width ratio of the first glue filling area 41 to the second glue filling area 42 can effectively control the width of the area where the edge of the filtrate screen 12 protrudes from the edge of the filter layer 2, and can increase the edge sealing effect and connection stability of the entire filter part. For example, when the number of layers of the screen 1 and the filter layer 2 of the membrane package is large, the width ratio of the first glue filling area 41 to the second glue filling area 42 can be appropriately increased, so that the edge of the filtrate screen 12 protrudes from the edge area of the filter layer 2 with a larger area, facilitating the penetration of the glue of the rigid shell 3 to the edge of the filtrate screen 12, and solidifying to form a penetration area 32 at the edge of the filtrate screen 12, thereby facilitating the guarantee of the flatness of the filtrate screen 12.

[0085] Referring to Figure 7 and Figure 8, rigid shell 3 is arranged around the filter part on the circumferential side and is located between the two sealing parts 5, and the rigid shell 3 is at least bonded or fixedly connected with the sealing part 5 in the partial permeation area 32 region. It can be understood that the glue solution of the rigid shell 3 can penetrate through the first glue filling area 41 and solidify on the liquid inlet screen 11 to form the permeation area 32 (liquid inlet permeation area 321), thereby forming a good sealing connection, and the rigid shell 3 can be limited by the sealing part 5, the flow of the glue solution of the rigid shell 3 is limited, the liquid inlet permeation area 321 of the rigid shell 3 is prevented from protruding from the surface of the screen 1, and the flatness of the entire membrane package is ensured. At the same time, during processing, the glue can be scraped with the outer peripheral edge of the sealing part 5 as a boundary, so as to ensure the flatness of the entire membrane package.

[0086] Example five

[0087] Referring to Figure 9 and Figure 10 Based on the above-mentioned example four, the difference of the present example is that the rigid shell 3 covers the filter part and the sealing part 5 from the side of the filter part and the sealing part 5, and the rigid shell 3 is fixedly connected with the sealing part 5 on the circumferential edge of the permeation area 32 and the sealing part 5, which can effectively increase the connection area of the sealing part 5 on the rigid shell 3, and further increase the sealing property and connection stability between the rigid shell 3, the sealing part 5 and the liquid inlet screen 11.

[0088] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A film package characterized by, The filter part comprises a screen and a filter layer; The membrane package further comprises a rigid shell arranged around the outer peripheral edges of the screen and the filter layer, The rigid shell is formed by curing of a glue solution and protrudes from the side wall surface of the filter part, and has a protruding portion protruding from the filter part and a penetration area penetrating into the edge of the screen, the width of the protruding portion being in the range of 1-5 mm; The hardness of the rigid shell is greater than or equal to 60 Shore D; At least part of the edge of the screen protrudes from the edge of the filter layer to form a glue filling area for the glue solution of the rigid shell to penetrate in the edge area of the filter part.

2. The film package of claim 1, wherein The screen comprises a filtrate screen and a liquid inlet screen; The filtrate screen and the adjacent filter layer are stacked to form a pre-packaged assembly; The liquid inlet screen is stacked with the pre-packaged assembly to form the filter part; In the pre-packaged assembly, the edge of the filtrate screen protrudes from the edge of the filter layer, the edge of the liquid inlet screen is flush with the edge of the filtrate screen, and the glue filling area is arranged around the periphery of the filter layer; Or; The edge of the liquid inlet screen protrudes from the pre-packaged assembly, and the glue filling area comprises a first glue filling area arranged around the periphery of the filter layer and a second glue filling area arranged around the periphery of the filtrate screen.

3. The film package of claim 2, wherein The penetration area comprises a liquid inlet penetration area penetrating into the edge of the liquid inlet screen, the liquid inlet penetration area is connected to the surface of the pre-packaged assembly, and the bonding area between the liquid inlet penetration area and the pre-packaged assembly does not overlap with the effective filtering area of the filter layer.

4. The film package of claim 2, wherein The ratio of the width of the first glue filling area to the width of the second glue filling area is 1:0.5-1.

5. The film package of claim 1, wherein The width of the glue filling area is in the range of 0.5-5 mm, and / or the ratio of the width of the glue filling area to the width of the penetration area is 0.5-0.95:

1.

6. The film package according to any one of claims 1 to 5, characterized in that The ratio of the width of the glue filling area to the width of the protruding portion is 1-5:

1.

7. The film package of claim 1, wherein The filter part is provided with a sealing part on both side end surfaces, the outermost side of the filter part is provided with the screen, and the sealing part is bonded to the end surface of the outermost screen of the filter part.

8. The film package of claim 7, wherein, The rigid shell is arranged around the circumferential side of the filter part and located between the two layers of sealing parts, and the rigid shell is bonded or fixedly connected to the sealing part at least in part of the penetration area.

9. The film package of claim 7, wherein, The rigid shell covers the filter part and the sealing part from the side surface of the filter part and the sealing part, and the rigid shell is fixedly connected to the sealing part around the penetration area and the periphery of the sealing part.

10. The film package of claim 7, wherein, The edge of the sealing part protrudes from the edge of the filter part and forms a bonding area between the side wall surface of the filter part; The rigid shell is filled in the bonding area and the rigid shell is fixedly connected to the sealing part in the bonding area and the penetration area.

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