Filtering membrane bag

Abstract

The utility model discloses a filtering membrane bag which comprises a liquid inlet unit and a filtering unit which are alternately stacked, the liquid inlet unit comprises a liquid inlet screen, and the filtering unit comprises a filtrate screen and filtering membranes stacked on the two sides of the filtrate screen; each of the liquid inlet screen and the filtrate screen comprises a screen body as well as a liquid inlet hole and a filtrate hole which are formed in the screen body, and the filtrate hole formed in the liquid inlet screen and the liquid inlet hole formed in the filtrate screen form a packaging hole; a packaging hole is formed in the net body, the net body is further provided with a glue sealing groove located in the peripheral side of the packaging hole, the glue sealing groove is filled with packaging glue, a first glue sealing part is formed, the filtering membrane bag further comprises a second glue sealing part formed by the packaging glue permeating into the net body, and the first glue sealing part and the second glue sealing part are connected to seal the periphery of the packaging hole. And the projection of the filter membrane on the net body at least partially covers the glue sealing groove. According to the filtering membrane bag disclosed by the utility model, the packaging performance of the packaging hole can be improved, so that the sealing reliability of the filtering membrane bag is improved.

Description

Technical Field

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

[0002] The filtration membrane package includes alternately stacked liquid inlet units and filtration units, the liquid inlet unit includes a liquid inlet screen, the filtration unit includes a filtrate screen and filtration membranes stacked on both sides of the filtrate screen, wherein the liquid inlet screen and the filtrate screen both include a mesh body, and liquid inlet holes and filtrate holes arranged on the mesh body, the filtrate holes on the liquid inlet screen are correspondingly connected to the filtrate holes of the filtrate screen, the liquid inlet holes on the liquid inlet screen are correspondingly connected to the liquid inlet holes of the filtrate screen, wherein the filtrate holes arranged on the liquid inlet screen and the liquid inlet holes arranged on the filtrate screen form encapsulation holes. In the prior art, when packaging the filtrate holes on the liquid inlet screen, multiple liquid inlet screens are first stacked to make the filtrate holes correspond, and then glue is injected into the filtrate holes, and then the glue is made to flow toward the periphery of the filtrate holes by vacuuming, so that the glue penetrates into the part of the mesh body located around the filtrate holes to form a seal; similarly, when packaging the liquid inlet holes on the filtrate screen, multiple filtrate screens are first stacked to make the liquid inlet holes correspond, and then glue is injected into the liquid inlet holes, and then the glue is made to flow toward the periphery of the filtrate holes by vacuuming, so that the glue penetrates into the part of the mesh body located around the liquid inlet holes to form a seal; finally, the liquid inlet units and the filtration units are alternately stacked, and glue is injected into the periphery of the mesh body, and the glue is made to penetrate into the mesh body part between the edge of the mesh body and the packaging hole by vacuuming, so that the stack can be permanently combined to form a filter membrane package.

[0003] Since the mesh bodies of the existing liquid inlet screen and filtrate screen are both formed by fiber weaving, their surfaces are a concave and convex woven structure. When the filter membrane package is in use, the external clamp will clamp the filter membrane package, and the fibers will be squeezed and tend to be flat. In the process of flattening, the fibers will pull the glue, causing it to separate from the glue or be punctured, causing damage to the package, thereby affecting the sealing of the filter membrane package. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a filter membrane package, which can improve the packaging performance of the packaging holes, thereby improving the sealing reliability of the filter membrane package.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A filter membrane package, comprising alternately stacked liquid inlet units and filter units, wherein the liquid inlet unit comprises a liquid inlet screen, and the filter unit comprises a filtrate screen and filter membranes stacked on both sides of the filtrate screen;

[0007] The liquid inlet screen and the filtrate screen both include a mesh body, as well as liquid inlet holes and filtrate holes provided on the mesh body. Among them, the filtrate holes provided on the liquid inlet screen and the liquid inlet holes provided on the filtrate screen form encapsulation holes;

[0008] A sealant groove is further provided on the mesh body on the periphery of the encapsulation hole. The sealant groove is filled with a sealant to form a first sealant part. The filter membrane package further includes a second sealant part formed by the sealant penetrating into the mesh body. The first sealant part and the second sealant part are connected to perform a circumferential seal on the encapsulation hole;

[0009] The projection of the filter membrane on the mesh body at least partially covers the sealant groove.

[0010] In the above filter membrane package, the sealant grooves on the mesh body communicate with the sealant grooves on the adjacent mesh bodies, so that the sealant can flow into the sealant grooves on each mesh body along the thickness direction of the filter membrane package.

[0011] In the above filter membrane package, the sealant groove includes a communication section located outside the projection range of the filter membrane on the mesh body.

[0012] In the above filter membrane package, the projections of the sealant grooves of adjacent mesh bodies partially overlap.

[0013] In the above filter membrane package, the sealant groove semi-surrounds the outside of the encapsulation hole. The sealant groove has two ends close to the edge of the mesh body, and both ends are closed ends, or one end of the sealant groove is close to the edge of the mesh body and forms a closed end, and the other end extends to the edge of the mesh body to form an open end. The distance between the closed end of the sealant groove and the edge of the mesh body is 1 mm to 15 mm.

[0014] In the above filter membrane package, when the encapsulation hole is located at the corner of the mesh body, the sealant groove outside the encapsulation hole is L-shaped;

[0015] When the encapsulation hole is far from the corner of the mesh body, the sealant groove outside the encapsulation hole includes two first grooves arranged in parallel and a second groove connecting the two first grooves. The two first grooves and the second groove are connected to form a "匚" shape. The encapsulation hole is located between the two first grooves, and the projections of the first grooves of adjacent mesh bodies overlap each other.

[0016] In the above filter membrane package, the sealant groove has a glue injection hole, and a transition hole is provided on the filter membrane. The transition hole communicates with the glue injection holes on the two side mesh bodies, so that the sealant grooves outside the filtrate holes and the sealant grooves outside the liquid inlet holes communicate.

[0017] In the above filter membrane package, the glue injection hole is provided at the corner of the sealant groove.

[0018] In the above-mentioned filter membrane package, the sealing groove includes a third groove located on both sides of the packaging hole, the third groove has an outer end and an inner end, the outer end extends to the edge of the mesh body and is connected with the outer end of the third groove on the adjacent mesh body through the outer peripheral side of the mesh body, the inner end is located inside the mesh body and forms a closed end, and the second sealing part also includes a transition sealing part connected between the two inner ends of the third grooves.

[0019] In the above-mentioned filter membrane package, the third groove includes a straight segment and an arc segment, one end of the straight segment extends to the edge of the mesh body, and the other end is connected to one end of the arc segment, and the other end of the arc segment extends toward the direction close to the packaging hole to form the closed end.

[0020] In the above-mentioned filter membrane package, when the packaging hole is located at the corner of the mesh body, one of the third grooves extends from one side of the mesh body corner to the inside of the mesh body, and the other third groove extends from the other side of the mesh body corner to the inside of the mesh body; when the packaging hole is far away from the mesh body corner, the two third grooves are located on opposite sides of the packaging hole, and the two third grooves both extend inward from one side of the mesh body close to the packaging hole; the distance between the two inner ends of the two third grooves is 2mm~10mm.

[0021] In the above-mentioned filter membrane package, a portion of the periphery of the mesh body corresponding to the sealing groove is partially cut off to form a first notch, and an edge of the filter membrane corresponding to the position of the first notch is cut off to form a second notch.

[0022] In the above-mentioned filter membrane package, the distance between the sealing groove and the packaging hole is L, the width of the sealing groove is W, and W is 1 mm to 5 mm, satisfying L / W of 0.5 to 3.

[0023] Beneficial effects of the utility model:

[0024] The mesh body in the utility model is also provided with a sealing glue groove located on the side around the packaging hole, and the sealing glue groove is filled with packaging glue to form a first sealing glue part, thereby allowing the first sealing glue part to form a structure of pure adhesive packaging, so that when the external clamp clamps the filter membrane package for filtration, the first sealing glue part will not be subjected to the pulling force caused by the deformation of the fibers on the mesh body, and the fibers will not pierce the first sealing glue part due to extrusion, thereby making the first sealing glue part less likely to be damaged, thereby improving the packaging performance of the packaging hole, and in addition, it can also make the first sealing glue part more secure when bonding or fitting with the filter membrane, thereby improving the sealing reliability of the filter membrane package.

[0025] The glue sealing grooves on the mesh body are connected to the glue sealing grooves on the adjacent mesh bodies, so that the sealing glue can flow into the glue sealing grooves on each mesh body along the thickness direction of the filter membrane package, wherein the thickness direction can be the thickness direction of the mesh edge. With such a design, when processing the filter membrane package, the liquid inlet units and the filter units can be stacked alternately, and then the glue is injected into the glue sealing grooves on the outermost mesh body and / or the glue is injected into the periphery of the mesh body. The glue in the glue sealing grooves flows into the glue sealing grooves on the remaining mesh bodies in turn along the thickness direction of the filter membrane package, and finally the packaging holes are evacuated. In this way, not only can the glue on the periphery of the mesh body penetrate into the mesh body portion between the mesh body edge and the packaging hole, but the glue in the glue sealing groove can also penetrate into the mesh body portion between the packaging hole and the glue sealing groove. The two parts of the infiltrated glue converge to achieve vacuuming of the packaging holes. The circumferential seal of the packaging hole is formed by the glue liquid filled in the sealing groove, wherein the glue liquid filled in the sealing groove forms the first sealing part, and the part that penetrates into the mesh body and connects to the end of the first sealing part to form the sealing part of the packaging hole circumference forms the second sealing part. The glue liquid penetrates into the mesh body part between the packaging hole and the sealing groove to further increase the area of ​​the packaging part, thereby improving the sealing performance of the packaging hole circumference; in addition, compared with the packaging method in the background technology, the technical solution can make the first sealing part and the second sealing part be formed by one vacuuming, or reduce the molding steps, and the process is relatively simple, thereby greatly increasing the production efficiency of the filter membrane package. At the same time, this packaging method can achieve sealing between the mesh body and the filter membrane through bonding, which is more reliable than the prior art filter membrane package.

[0026] The sealing groove includes a connecting section located outside the projection range of the filter membrane on the mesh body. The connecting section enables the mesh bodies to be connected as a whole after the glue is solidified, thereby increasing the integrity of the mesh bodies of the filter membrane package, improving the filtering effect and stability; and also increasing the sealing of the entire filter membrane package.

[0027] The projections of the sealing grooves of adjacent mesh bodies overlap. Since the first sealing portion in the sealing groove forms a structure encapsulated by pure adhesive, the overlapping portion can prevent the mesh body at the edge of the first sealing portion from squeezing and deforming the filter membrane during use, thereby improving the integrity of the filter membrane package.

[0028] The sealant groove semi - surrounds the outside of the encapsulation hole. The sealant groove has two ends close to the edge of the mesh body, and both ends are closed ends, or one end of the sealant groove is close to the edge of the mesh body and forms a closed end, and the other end extends to the edge of the mesh body to form an open end. The distance between the closed end of the sealant groove and the edge of the mesh body is 1 mm to 15 mm. With such a design, the first sealant part can semi - surround the outside of the encapsulation hole, thereby increasing the length of the first sealant part, and further enhancing the sealing reliability of the encapsulation hole. In addition, the second sealant part in this technical solution is the part of the glue liquid that penetrates between the edge of the mesh body and the encapsulation hole. The distance between the closed end of the sealant groove and the edge of the mesh body is 1 mm to 15 mm. In this way, it can ensure that the inner edge of the second sealant part converges and connects with both ends of the first sealant part to form a circumferential seal of the encapsulation hole, and at the same time, it also prevents the glue liquid outside the mesh body from penetrating into the encapsulation hole and blocking the encapsulation hole, thereby reducing the filtration efficiency of the filter membrane package. Finally, for the membrane package with a large number of liquid inlet holes and filtrate holes, since the mesh body is relatively soft, such a design can minimize the cut - off part of the edge of the mesh body to ensure the uprightness of the edge of the mesh body, and thus facilitate the later stacking.

[0029] When the encapsulation hole is located at the corner of the mesh body, the sealant groove outside the encapsulation hole is L - shaped; when the encapsulation hole is far from the corner of the mesh body, the sealant groove outside the encapsulation hole includes two first grooves arranged in parallel and a second groove connecting the two first grooves. The two first grooves and the second groove are connected to form a "匚" shape, and the encapsulation hole is located between the two first grooves. With such a design, the processing difficulty of the encapsulation groove can be reduced, which is convenient for the batch processing and forming of the mesh body. At the same time, in the "匚" - shaped structure, the projections of the first grooves of adjacent mesh bodies overlap each other, which can further improve the integrity of the filter membrane package.

[0030] The sealant groove has a glue injection hole, and the filter membrane is provided with a transition hole, and the transition hole communicates with the glue injection holes on both sides of the mesh body, so that the sealant groove outside the filtrate hole and the sealant groove outside the liquid inlet hole are communicated. With such a design, not only can the glue liquid injected into the glue injection hole flow to the sealant groove outside the filtrate hole and flow to the sealant groove outside the liquid inlet hole through the transition hole, thereby reducing the number of glue injection points, but also it can accelerate the filling of each sealant groove with the glue liquid.

[0031] The glue injection hole is arranged at the corner of the sealant groove. With such a design, the glue liquid entering the glue injection hole can flow towards both ends of the sealant groove, thereby accelerating the filling of the sealant groove with the glue liquid.

[0032] The glue sealing groove includes a third groove located on both sides of the packaging hole, the third groove has an outer end and an inner end, the outer end extends to the edge of the mesh body and is connected to the outer end of the third groove on the adjacent mesh body through the outer peripheral side of the mesh body, the inner end is located inside the mesh body and forms a closed end, and the second glue sealing part also includes a transition glue sealing part connected between the two inner ends of the third groove. With such a design, there is no need to separately set a glue injection hole and a transition hole on the filter membrane, and the glue liquid on the periphery of the mesh body can enter the third groove through the outer end when vacuuming, thereby filling the third groove; in addition, it should be noted that the second glue sealing part includes not only the glue that penetrates into the mesh part between the edge of the mesh body and the packaging hole, but also a transition glue sealing part, which is formed by part of the glue liquid in the third groove penetrating into the mesh part between the two inner ends of the third groove when vacuuming, thereby realizing the connection between the first glue sealing part and the second glue sealing part to perform circumferential sealing on the packaging hole.

[0033] The third groove includes a straight segment and an arc segment, one end of the straight segment extends to the edge of the mesh body, and the other end is connected to one end of the arc segment, and the other end of the arc segment extends toward the packaging hole and forms a closed end. With this design, the distance between the inner ends of the two third grooves can be shortened, so that the glue liquid that penetrates the inner ends of the two third grooves onto the mesh body can be more easily gathered, thereby facilitating the formation of the transitional sealing portion.

[0034] When the packaging hole is located at the corner of the mesh body, one of the third grooves extends from one side of the mesh body corner to the inside of the mesh body, and the other third groove extends from the other side of the mesh body corner to the inside of the mesh body; when the packaging hole is far away from the corner of the mesh body, the two third grooves are located on opposite sides of the packaging hole, and the two third grooves both extend inward from one side of the mesh body close to the packaging hole. Such a design is more conducive to the convergence of the first sealing part and the second sealing part to achieve the circumferential sealing of the packaging hole, thereby reducing the packaging difficulty; and the distance between the two inner ends of the two third grooves is 2mm to 10mm. Such a design can not only ensure the structural strength of the mesh part located between the two inner ends of the two third grooves to avoid its breakage, but also enable the glue in the two third grooves to penetrate into the mesh body and converge when vacuuming to form a transitional sealing part.

[0035] The part of the mesh body corresponding to the sealing groove is partially cut off to form the first notch, and the edge of the filter membrane corresponding to the first notch is cut off to form the second notch. The design of the first notch can reduce the distance that the glue liquid on the periphery of the mesh body needs to penetrate to ensure the connection between the second sealing part and the first sealing part, and at the same time, it can also allow the glue liquid to cover the side of the packaging hole as much as possible to avoid more dead volume during use; and the design of the second notch ensures the smooth flow of the glue liquid on the periphery of the mesh body in the thickness direction of the filter membrane package, and avoids the part of the filter membrane corresponding to the first notch protruding and reducing the appearance of the filter membrane package.

[0036] The distance between the sealing groove and the packaging hole is L, the width of the sealing groove is W, W is 1mm to 5mm, and L / W is 0.5 to 3. Such a design not only ensures that the glue liquid flows smoothly in the sealing groove to fill the sealing groove, but also avoids the glue liquid from penetrating into the packaging hole and blocking at least part of the packaging hole when the sealing groove is too wide and L is small. At the same time, it also avoids the sealing groove being too wide and L is too large and too close to the adjacent hole that does not need to be packaged, resulting in the glue liquid flowing to the side of the hole that does not need to be packaged during vacuuming and blocking the hole that does not need to be packaged.

[0037] These features and advantages of the present invention will be disclosed in detail in the following specific implementation manners and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The utility model is further described below in conjunction with the accompanying drawings:

[0039] Figure 1 This is a schematic diagram of the structure of the liquid inlet screen in the first embodiment of the utility model;

[0040] Figure 2 This is a schematic diagram of the structure of the filtrate screen in Example 1 of the utility model;

[0041] Figure 3 This is a schematic diagram of the structure of the filter membrane in Example 1 of the utility model;

[0042] Figure 4 This is a schematic diagram of the structure of the liquid inlet screen after being sealed with glue in the first embodiment of the utility model;

[0043] Figure 5 This is a schematic diagram of the structure of the filtrate screen after being sealed with glue in the first embodiment of the utility model;

[0044] Figure 6 The cross-sectional view of the filter membrane package in the first embodiment of the utility model Figure 1 ;

[0045] Figure 7 The cross-sectional view of the filter membrane package in the first embodiment of the utility model Figure 2 ;

[0046] Figure 8 This is a schematic diagram of the partial structure of the filtrate screen in the second embodiment of the utility model;

[0047] Fig. 9 This is a schematic diagram of the partial structure of the filtrate screen in the second embodiment of the utility model;

[0048] Fig.10 This is a schematic diagram of the local structure of the filter membrane in the second embodiment of the utility model;

[0049] Fig.11This is a schematic diagram of the partial structure of the filtrate screen and the filter membrane stack in the second embodiment of the utility model;

[0050] Fig.12 This is a schematic diagram of the structure of the filtrate screen after being sealed with glue in the second embodiment of the utility model;

[0051] Fig.13 This is a schematic diagram of the structure of the liquid inlet screen after being sealed with glue in the third embodiment of the utility model;

[0052] Fig.14 This is a schematic diagram of the structure of the filtrate screen after sealing with glue in the third embodiment of the utility model;

[0053] Fig.15 It is a schematic diagram of the local structure of the filtrate screen after sealing with glue in the fourth embodiment of the utility model.

[0054] Reference numerals:

[0055] 100, liquid inlet screen; 200, filtrate screen; 300, filter membrane; 310, perforation; 320, transition hole; 330, second gap; 400, liquid inlet hole; 500, filtrate hole; 600, glue sealing groove; 601, connecting section; 610, first groove; 620, second groove; 630, glue injection hole; 640, third groove; 641, straight section; 642, arc section; 700, first glue sealing part; 800, second glue sealing part; 810, transition glue sealing part; 900, first gap. DETAILED DESCRIPTION

[0056] The utility model provides a filter membrane package, comprising a liquid inlet unit and a filter unit which are alternately stacked, wherein the liquid inlet unit comprises a liquid inlet screen, and the filter unit comprises a filtrate screen and filter membranes stacked on both sides of the filtrate screen;

[0057] The liquid inlet screen and the filtrate screen both comprise a mesh body, and liquid inlet holes and filtrate holes arranged on the mesh body, wherein the filtrate holes arranged on the liquid inlet screen and the liquid inlet holes arranged on the filtrate screen form a packaging hole;

[0058] The mesh body is also provided with a sealing glue groove located on the peripheral side of the packaging hole, the sealing glue groove is filled with packaging glue to form a first sealing glue part, the filter membrane package also includes a second sealing glue part formed by the packaging glue penetrating into the mesh body, the first sealing glue part and the second sealing glue part are connected to perform circumferential sealing on the packaging hole.

[0059] The mesh body in the utility model is also provided with a sealing glue groove located on the side around the packaging hole, and the sealing glue groove is filled with packaging glue to form a first sealing glue part, thereby allowing the first sealing glue part to form a structure of pure adhesive packaging, so that when the external clamp clamps the filter membrane package for filtration, the first sealing glue part will not be subjected to the pulling force caused by the deformation of the fibers on the mesh body, and the fibers will not pierce the first sealing glue part due to extrusion, thereby making the first sealing glue part less likely to be damaged, thereby improving the packaging performance of the packaging hole, and in addition, it can also make the first sealing glue part more secure when bonding or fitting with the filter membrane, thereby improving the sealing reliability of the filter membrane package.

[0060] The technical scheme of the embodiment of the utility model is explained and illustrated below in conjunction with the drawings of the embodiment of the utility model, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making creative work all belong to the protection scope of the utility model. In addition, it should be understood that the following words indicating orientation or position relationship such as "up", "down", "left", "right", "longitudinal", "lateral", "inside", "outside", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0061] Embodiment 1

[0062] Reference Figures 1 to 7As shown, the filtration membrane package in this embodiment includes alternately stacked liquid inlet units and filtration units, wherein the liquid inlet unit includes a liquid inlet screen 100, and the filtration unit includes a filtrate screen 200 and filter membranes 300 stacked on both sides of the filtrate screen 200, and the liquid inlet screen 100 and the filtrate screen 200 both include a mesh body, and a plurality of liquid inlet holes 400 and a plurality of filtrate holes 500 arranged on the mesh body, the aperture of the liquid inlet hole 400 is larger than the aperture of the filtrate hole 500, wherein the plurality of liquid inlet holes 400 and the plurality of filtrate holes 500 are respectively arranged on opposite sides of the mesh body, and the plurality of liquid inlet holes 400 and the plurality of filtrate holes 500 on each side are alternately spaced. cloth, and the filter membrane 300 is provided with a plurality of perforations 310 corresponding to the liquid inlet holes 400 and the filtrate holes 500, so that the filtrate holes 500 on the liquid inlet screen 100 are connected with the filtrate holes 500 of the filtrate screen 200 through the perforations 310, and the liquid inlet holes 400 on the liquid inlet screen 100 are connected with the liquid inlet holes 400 of the filtrate screen 200 through the perforations 310, wherein the filtrate holes 500 on the liquid inlet screen 100 and the liquid inlet holes 400 provided on the filtrate screen 200 are sealed on their peripheries, that is, the filtrate holes 500 provided on the liquid inlet screen 100 and the liquid inlet holes 400 provided on the filtrate screen 200 form a packaging hole. The mesh body is also provided with a sealing groove 600 located on the periphery of the packaging hole. The sealing groove 600 is filled with packaging glue to form a first sealing part 700. The filter membrane package also includes a second sealing part 800 formed by the packaging glue penetrating into the mesh body. The first sealing part 700 and the second sealing part 800 are connected to seal the packaging hole around the periphery. With such a design, the first sealing part 700 can form a structure of pure adhesive packaging. In this way, when the external clamp clamps the filter membrane package for filtering, the first sealing part 700 will not be subjected to the pulling force caused by the deformation of the fibers on the mesh body, and the fibers will not pierce the first sealing part 700 due to extrusion. As a result, the first sealing part 700 is less likely to be damaged, thereby improving the packaging performance of the packaging hole. In addition, it can also make the first sealing part 700 more secure when bonding or fitting with the filter membrane 300, thereby improving the sealing reliability of the filter membrane package.

[0063] Specifically, the sealing groove 600 in this embodiment is half-surrounded outside the packaging hole, and the sealing groove 600 has two ends close to the edge of the mesh body, both ends are closed ends, and at the same time, the projection of the filter membrane on the mesh body can completely cover the sealing groove. Figure 1As shown, for the filtration holes 500 on the liquid inlet screen 100 being encapsulation holes, since the filtration holes 500 are all arranged away from the corners of the mesh body, the sealant grooves 600 outside the filtration holes 500 all include two first grooves 610 arranged in parallel and a second groove 620 connecting the two first grooves 610. The two first grooves 610 and the second groove 620 are connected to form a "匚" shape. The filtration hole 500 is located between the two first grooves 610, and the opening of the "匚" shape is arranged in the direction away from the other filtration hole 500, so that the two ends of the sealant groove 600 are close to the edge of the mesh body. As Figure 2 As shown, for the liquid inlet holes 400 on the filtrate screen 200 being encapsulation holes, since two of the liquid inlet holes 400 are arranged at the corners of the mesh body, the sealant grooves 600 outside these two liquid inlet holes 400 are L-shaped, and the two ends of the sealant groove 600 extend respectively towards the two side edges of the corner to be close to the edge of the mesh body; for the liquid inlet holes 400 away from the corners of the mesh body, the sealant grooves 600 outside them also all include two first grooves 610 arranged in parallel and a second groove 620 connecting the two first grooves 610. The two first grooves 610 and the second groove 620 are connected to form a "匚" shape. The liquid inlet hole 400 is located between the two first grooves 610, and the opening of the "匚" shape is arranged in the direction away from the other liquid inlet hole 400, so that the two ends of the sealant groove 600 are close to the edge of the mesh body. At the same time, the projections of the first grooves 610 on the filtration holes 500 on the liquid inlet screen 100 and the adjacent liquid inlet holes 400 on the filtrate screen 200 overlap with each other. The overlapping part can prevent the mesh body at the edge of the first sealant part from squeezing and deforming the filter membrane during the use of the filter membrane package, so that the integrity of the filter membrane package is better. Of course, in other embodiments, in order to avoid the generation of dead corners and meet the requirements of special-shaped encapsulation structures, etc., the projections of the first grooves 610 on the liquid inlet screen 100 and the filtrate screen 200 may not overlap. With such a design, the processing difficulty of the sealant groove 600 can be reduced, which is convenient for the batch processing and forming of the mesh body; in addition, the shape of the sealant groove 600 in this embodiment can also make the first sealant part 700 semi-surround the outside of the encapsulation hole, thereby increasing the length of the first sealant part 700, and further improving the sealing reliability of the encapsulation hole; finally, since the number of liquid inlet holes 400 and filtration holes 500 on the membrane package is large and the mesh body is relatively soft, such a design can minimize the cut part of the mesh body edge to ensure the standing degree of the mesh body edge, and further facilitate the later stacking.

[0064] In addition, the sealing groove 600 in this embodiment has a glue injection hole 630. Preferably, the projection of the portion of the sealing groove 600 located between the liquid inlet hole 400 and the filtrate hole 500 in the thickness direction of the filter membrane package overlaps with the portion of the sealing groove 600 located between the liquid inlet hole 400 and the filtrate hole 500 on the adjacent mesh body, and the glue injection hole 630 is provided on the portion of the sealing groove 600 located between the liquid inlet hole 400 and the filtrate hole 500, so that the glue injection hole 630 on the adjacent mesh body corresponds to the glue injection hole 630 in the thickness direction of the filter membrane package, and the filter membrane 300 is provided with a portion corresponding to the glue injection hole 630. The transition hole 320 corresponding to the hole 630 connects the glue injection holes 630 on the mesh bodies at both sides, thereby enabling the glue sealing groove 600 located outside the filtrate hole 500 to be connected with the glue sealing groove 600 located outside the liquid inlet hole 400, that is, the glue sealing groove 600 on the mesh body is connected with the glue sealing groove 600 on the adjacent mesh body through the transition hole 320, and then the glue liquid can flow into the glue sealing groove 600 on each mesh body along the thickness direction of the filter membrane package, thereby reducing the number of glue injection points. In addition, it can also speed up the filling of each glue sealing groove 600 with the glue liquid.

[0065] When the filter membrane package in the present embodiment is produced, the liquid inlet unit and the filter unit are first stacked alternately, and then glue is injected into the glue injection hole 630 located on the outermost mesh body and / or glue is injected into the periphery of the mesh body. The glue in the sealing groove 600 flows into the sealing grooves 600 on the remaining mesh bodies in sequence through the transition hole 320 along the thickness direction of the filter membrane package. Finally, the liquid inlet hole 400 and the filtrate hole 500 are evacuated. In this way, not only the glue on the periphery of the mesh body can penetrate into the mesh body part between the edge of the mesh body and the packaging hole, but also the glue in the sealing groove 600 can penetrate into the mesh body part between the packaging hole and the sealing groove 600. The two parts of the infiltrated glue are converged to achieve the circumferential sealing of the packaging hole, wherein the glue filled in the sealing groove 600 forms the first sealing part 700, and the glue that penetrates from the periphery of the mesh body to the edge of the mesh body forms the first sealing part 700. The portion between the edge and the packaging hole forms the second sealing portion 800, and the two ends of the first sealing portion 700 are connected to the second sealing portion 800 to form a seal around the packaging hole. In addition, the glue in the sealing groove 600 will also penetrate into the mesh part between the packaging hole and the sealing groove 600 under the action of vacuuming, so that the area of ​​the packaging part can be further increased, thereby improving the sealing performance of the packaging hole around the circle; in addition, compared with the packaging method in the background technology, this embodiment can also make the first sealing portion 700 and the second sealing portion 800 be formed by one vacuuming or reduce the molding steps, and the process is relatively simple, thereby greatly increasing the production efficiency of the filter membrane package, and at the same time, this packaging method can be used to achieve sealing between the mesh body and the filter membrane 300 by bonding, which is more reliable than the prior art filter membrane package. In addition, it should be noted that since the liquid inlet hole 400 and the filtrate hole 500 are vacuumed at the same time, a part of the glue in the sealing groove 600 penetrates into the mesh part between the sealing groove 600 and the hole that does not need to be packaged.

[0066] Secondly, in this embodiment, the distance H between the two closed ends of the sealing groove 600 and the edge of the mesh body is 1mm to 15mm. When H is less than 1mm, the glue on the periphery of the mesh body will penetrate into the packaging hole and block the packaging hole, thereby reducing the filtration efficiency of the filter membrane package, and the filtration efficiency of the filter membrane package is easily broken; when H is greater than 15mm, since the portion between the mesh edge and the packaging hole where the glue penetrates from the periphery of the mesh body is shorter, it is impossible to ensure that the inner edge of the second sealing part 800 and the two ends of the first sealing part 700 converge and connect, thereby unable to form a circumferential seal for the packaging hole. For this reason, H in this embodiment is preferably 4mm. Such a design can ensure that the inner edge of the second sealing part 800 and the two ends of the first sealing part 700 converge and connect to form a circumferential seal for the packaging hole, while also preventing the glue on the periphery of the mesh body from penetrating into the packaging hole and blocking the packaging hole, thereby reducing the filtration efficiency of the filter membrane package.

[0067] Furthermore, the injection holes 630 in this embodiment are arranged at all corners of the sealing groove 600. Such a design allows the glue entering the injection holes 630 to flow toward both ends of the sealing groove 600, thereby accelerating the glue to fill the sealing groove 600.

[0068] Finally, in this embodiment, the distance between the sealing groove 600 and the packaging hole is L, and the width of the sealing groove 600 is W, W is 1mm to 5mm, and L / W is 0.5 to 3. Such a design not only ensures that the glue liquid flows smoothly in the sealing groove 600 to fill the sealing groove 600, but also prevents the glue liquid from penetrating into the packaging hole and blocking at least part of the packaging hole when the sealing groove 600 is too wide and L is small. At the same time, it also prevents the sealing groove 600 from being too wide and L is large and the distance to the adjacent hole that does not need to be packaged (when the packaging hole is a filtrate hole, the adjacent hole that does not need to be packaged is a liquid inlet hole provided on the same mesh body, and when the packaging hole is a liquid inlet hole, the adjacent hole that does not need to be packaged is a filtrate hole provided on the same mesh body)) is too close. Since the liquid inlet hole 400 and the filtrate hole 500 are vacuumed at the same time, the glue liquid flows to the side of the hole that does not need to be packaged during vacuuming and blocks the hole that does not need to be packaged.

[0069] It is understandable that in other embodiments of the present invention, one end of the sealing groove is close to the edge of the mesh body and forms a closed end, while the other end extends to the edge of the mesh body to form an open end. Such a design enables the glue liquid on the outside of the filter membrane package to enter the sealing groove through the open end, and the glue injection hole can be used to inject glue, which can further speed up the filling of the sealing groove with glue liquid. Of course, when one end of the sealing groove forms an open end, the injection hole and the transition hole can be omitted, so that the glue liquid can enter the sealing groove only through the open end.

[0070] It can be understood that in other embodiments of the present invention, the sealing groove can also be an arc-shaped groove.

[0071] It can be understood that in other embodiments of the present invention, for the sealing glue groove outside the filtrate hole on the liquid inlet screen is filled with packaging glue, glue liquid can also be injected into the filtrate hole, and then the liquid inlet hole on the liquid inlet screen is evacuated to allow the glue liquid to penetrate into the sealing glue groove and form a first sealing glue part; and the method of filling the sealing glue groove outside the liquid inlet hole on the filtrate screen with packaging glue to form the first sealing glue part is also processed in the above method, which will not be described in detail here.

[0072] Embodiment 2

[0073] In this embodiment, compared with the first embodiment, the sealing groove 600 includes a third groove 640 located on both sides of the packaging hole, and the third groove 640 has an outer end and an inner end. The outer end extends to the edge of the mesh body and communicates with the outer end of the third groove 640 on the adjacent mesh body through the outer peripheral side of the mesh body, that is, the sealing groove 600 on the mesh body is connected with the sealing groove 600 on the adjacent mesh body, and the inner end is located inside the mesh body and forms a closed end. When the packaging hole is located at the edge corner of the mesh body, such as Figure 8 , 10 -12, so one of the third grooves 640 extends from one side of the corner of the filtrate screen 200 to the inside of the filtrate screen 200, and the other third groove 640 extends from the other side of the corner of the filtrate screen 200 to the inside of the filtrate screen 200. With this design, there is no need to separately set up glue injection holes and transition holes on the filter membrane 300. After the liquid inlet units and the filter units are alternately stacked, glue is injected into the periphery of the mesh body, and then the liquid inlet holes 400 and the filtrate holes 500 are evacuated to allow the glue on the periphery of the mesh body to enter the third groove 640 through the outer end, thereby filling the third groove 640, and at this time, the sealing groove includes a connecting section 601 located outside the projection range of the filter membrane on the mesh body; when the sealing hole is located in the middle of the mesh body (i.e., away from the corner), as shown in Fig. 9 As shown, the packaging hole of the filtrate screen 200, that is, the sealing groove 600 outside the liquid inlet hole 400, can also be provided with two third grooves 640, and the two third grooves 640 are located on opposite sides of the packaging hole, and the two third grooves 640 extend inward from one side of the filtrate screen 200 close to the liquid inlet hole 400. Of course, the liquid inlet screen is located in the middle of the mesh body (that is, away from the corner) and the sealing groove 600 of the packaging hole is consistent with the filtrate screen. It should be noted that in this case, in addition to the sealing that penetrates into the mesh body portion between the edge of the mesh body and the packaging hole, the second sealing portion also includes a transitional sealing portion connected between the inner ends of the two third grooves.

[0074] In addition, it should be noted that the second sealing portion 800 includes not only the sealing glue that penetrates into the mesh portion between the edge of the mesh body and the packaging hole, but also a transitional sealing portion 810. The transitional sealing portion 810 is formed by part of the glue in the third groove 640 penetrating into the mesh portion between the inner ends of the two third grooves 640 during vacuuming, thereby achieving the connection between the first sealing portion 700 and the second sealing portion 800 to perform circumferential sealing on the packaging hole; furthermore, such a design is more conducive to the convergence of the first sealing portion 700 and the second sealing portion 800 to achieve circumferential sealing on the packaging hole, thereby reducing the difficulty of packaging; finally, the processing difficulty of the sealing groove 600 in this embodiment is also relatively low.

[0075] In addition, in the present embodiment, the distance H1 between the two inner ends of the two third grooves 640 is 2 mm to 10 mm. When H1 is less than 2 mm, the structural strength of the mesh portion between the two third grooves 640 is low and is prone to breakage. When H1 is greater than 10 mm, the two inner ends of the two third grooves 640 are far apart, and it is impossible to ensure that the glue liquid penetrates into the mesh body and gathers to form a transitional sealing portion. For this reason, H1 in the present embodiment is preferably 4 mm. Such a design can not only ensure the structural strength of the mesh portion between the two inner ends of the two third grooves 640 to avoid its breakage, but also enable the glue liquid in the two third grooves 640 to penetrate into the mesh body and gather when vacuuming to form a transitional sealing portion 810.

[0076] The third groove 640 includes a straight segment 641 and an arc segment 642. One end of the straight segment 641 extends to the edge of the mesh body, and the other end is connected to one end of the arc segment 642. The other end of the arc segment 642 extends toward the packaging hole and forms a closed end. With such a design, the distance between the inner ends of the two third grooves 640 can be shortened, so that the glue liquid that penetrates the inner ends of the two third grooves 640 onto the mesh body can be more easily gathered, thereby facilitating the formation of the transitional sealing portion 810.

[0077] In addition, a portion of the mesh body corresponding to one of the third grooves 640 is partially cut off to form a first notch 900, and an edge of the filter membrane 300 is cut off at the position corresponding to the first notch 900 to form a second notch 330. The design of the first notch 900 can reduce the distance that the glue liquid on the periphery of the mesh body needs to penetrate, so as to ensure the connection between the second sealing part 800 located between the edge of the mesh body and the packaging hole and the first sealing part 700, and at the same time, it can also allow the glue liquid to cover the periphery of the packaging hole as much as possible to avoid more dead volume during use; and the design of the second notch 330 not only ensures the smooth flow of the glue liquid on the periphery of the mesh body in the thickness direction of the filter membrane package, but also avoids the protrusion of the portion of the filter membrane 300 corresponding to the first notch 900 to reduce the appearance of the filter membrane package.

[0078] It should be noted that in this embodiment, the distance between the sealing groove 600 and the packaging hole is L, the width of the sealing groove 600 is W, W is 1mm~5mm, and L / W is 0.5~3. The effect of this design refers to the first embodiment and will not be described in detail here.

[0079] It can be understood that in other embodiments of the present invention, the sealing groove can also be set with reference to the sealing groove arranged on the outside of the packaging hole at the corner of the mesh body in Example 1, that is, the sealing groove is L-shaped, and the sealing groove half surrounds the outside of the packaging hole. The sealing groove has two ends close to the edge of the mesh body, and both ends are closed ends.

[0080] Embodiment 3

[0081] like Fig.13 and Fig.14 As shown, compared with the first embodiment, the difference of this embodiment is that the first sealing part 700 is entirely located in the sealing groove 600, and when assembling the filter membrane package, firstly, glue is applied to the sealing groove 600 outside the filtrate hole 500 on the liquid inlet screen 100 to form the first sealing part 700, and glue is applied to the sealing groove 600 outside the liquid inlet hole 400 on the filtrate screen 200 to form the first sealing part 700, that is, the first sealing part 700 will not penetrate into the mesh body, and then the liquid inlet screen 100 and the filtrate unit provided with the first sealing part 700 are alternately stacked, and then glue is injected into the periphery of the mesh body, and the glue is infiltrated into the edge of the mesh body and the packaging hole by vacuuming to form the second sealing part 800 connected to the first sealing part 700.

[0082] Embodiment 4

[0083] Compared with the second embodiment, the difference of this embodiment is that the first sealing part 700 is entirely located in the sealing groove 600. When assembling the filter membrane package, firstly, the sealing groove 600 outside the filtrate hole 500 on the liquid inlet screen 100 is coated with glue to form the first sealing part 700, and the transition sealing part 810 connected between the inner ends of the two third grooves is formed by coating glue between the inner ends of the two third grooves. Then, the sealing groove 600 outside the liquid inlet hole 400 on the filtrate screen 200 is coated with glue to form the first sealing part 700, and the transition sealing part 810 connected between the inner ends of the two third grooves is formed by coating glue between the inner ends of the two third grooves. Glue is applied between the inner ends to form a transitional glue sealing part 810 connected between the inner ends of the two third grooves, that is, the first glue sealing part 700 will not penetrate into the mesh body, and then the liquid inlet screen 100 and the filtrate unit provided with the first glue sealing part 700 and the transitional glue sealing part 810 are alternately stacked, and then glue is injected into the periphery of the mesh body by vacuuming, so that the glue penetrates into the mesh body part between the edge of the mesh body and the packaging hole and then connects the outer ends of the two third grooves, so as to realize the connection between the first glue sealing part 700 and the second glue sealing part 800 to seal the packaging hole circumferentially. Fig.15 The structure after the edge holes of the filtrate screen 200 are packaged is shown.

[0084] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A filter membrane package, comprising alternately stacked liquid inlet units and filtration units, the liquid inlet unit including a liquid inlet screen, and the filtration unit including a filtrate screen and filter membranes laminated on both sides of the filtrate screen; both the liquid inlet screen and the filtrate screen include a mesh body, as well as liquid inlet holes and filtrate holes provided on the mesh body, wherein the filtrate holes provided on the liquid inlet screen and the liquid inlet holes provided on the filtrate screen form encapsulation holes; characterized in that a sealant groove is further provided on the mesh body on the periphery of the encapsulation hole, the sealant groove is filled with encapsulation glue to form a first sealant part, and the filter membrane package further includes a second sealant part formed by the encapsulation glue penetrating into the mesh body, and the first sealant part and the second sealant part are connected to perform circumferential sealing on the encapsulation hole; at least a part of the projection of the filter membrane on the mesh body covers the sealant groove.

2. A filtration membrane package according to claim 1, characterized in that: The sealant grooves on the mesh body communicate with the sealant grooves on adjacent mesh bodies, so that the encapsulation glue can flow into the sealant grooves on each mesh body along the thickness direction of the filter membrane package.

3. A filtration membrane package as claimed in claim 2, characterized in that: The sealant groove includes a communicating section outside the projection range of the filter membrane on the mesh body.

4. A filtration membrane package as claimed in claim 2, characterized in that: The projections of the sealant grooves of adjacent mesh bodies partially overlap.

5. A filtration membrane package as claimed in claim 4, characterized in that: The sealant groove is semi-surrounded outside the encapsulation hole, the sealant groove has two ends close to the edge of the mesh body, both ends are closed ends, or one end of the sealant groove is close to the edge of the mesh body and forms a closed end, and the other end extends to the edge of the mesh body to form an open end, and the distance between the closed end of the sealant groove and the edge of the mesh body is 1 mm to 15 mm.

6. A filtration membrane package according to claim 5, characterized in that: When the encapsulation hole is located at the corner of the mesh body, the sealant groove outside the encapsulation hole is L-shaped; When the encapsulation hole is away from the corner of the mesh body, the sealant groove outside the encapsulation hole includes two first grooves arranged in parallel and a second groove connecting the two first grooves, and the two first grooves and the second groove are connected to form a "匚" shape, the encapsulation hole is located between the two first grooves, and the projections of the first grooves of adjacent mesh bodies overlap each other.

7. A filtration membrane package according to any one of claims 2 to 6, characterized in that: The sealant groove has a glue injection hole, and a transition hole is provided on the filter membrane, and the transition hole communicates with the glue injection holes on the two side mesh bodies, so that the sealant groove outside the filtrate hole and the sealant groove outside the liquid inlet hole communicate.

8. A filtration membrane package according to claim 7, characterized in that: The glue injection hole is provided at the corner of the sealant groove.

9. A filtration membrane package according to claim 2, characterized in that: The sealant groove includes third grooves on both sides of the encapsulation hole, the third groove has an outer end and an inner end, the outer end extends to the edge of the mesh body and communicates with the outer end of the third groove on the adjacent mesh body through the outer peripheral side of the mesh body, and the inner end is located inside the mesh body and forms a closed end, and the second sealant part further includes a transition sealant part connected between the inner ends of the two third grooves.

10. A filtration membrane package according to claim 9, characterized in that: The third groove includes a straight section and an arc section, one end of the straight section extends to the edge of the mesh body, the other end communicates with one end of the arc section, and the other end of the arc section extends towards the direction close to the encapsulation hole to form the closed end.

11. A filtration membrane package according to claim 9, characterized in that: When the encapsulation hole is located at the corner of the mesh body, one of the third grooves extends from one side edge of the mesh body corner towards the inside of the mesh body, and the other third groove extends from the other side edge of the mesh body corner towards the inside of the mesh body; When the packaging hole is away from the corner of the mesh body, the two third grooves are located on opposite sides of the packaging hole, and the two third grooves extend inward from one side of the mesh body close to the packaging hole; The distance between the two inner ends of the two third grooves is 2 mm to 10 mm.

12. A filtration membrane package according to claim 1, characterized in that: The portion of the periphery of the mesh body corresponding to the sealing groove is partially cut off to form a first notch, and the edge of the filter membrane corresponding to the position of the first notch is cut off to form a second notch.

13. A filtration membrane package according to claim 11, characterized in that: The distance between the sealing groove and the packaging hole is L, the width of the sealing groove is W, and W is 1 mm to 5 mm, satisfying L / W of 0.5 to 3.

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