Efficient filtering membrane bag

Abstract

The utility model discloses a high-efficiency filter membrane package, including membrane package main part and be located the shell of membrane package main part outside, membrane package main part includes at least one liquid inlet unit, filter membrane and liquid outlet unit, liquid inlet unit and liquid outlet unit stack up, filter membrane is located liquid inlet unit and liquid outlet unit between, liquid outlet unit is located liquid inlet unit, liquid outlet unit is located liquid outlet unit, liquid outlet unit is located liquid outlet unit. The membrane bag main body is provided with through holes in the liquid inlet unit, the filtering membrane and the liquid outlet unit, the through holes comprise a liquid inlet, a liquid outlet and a reflux inlet, a liquid inlet sealing ring is arranged on the periphery of the liquid outlet of the liquid inlet unit, a liquid inlet flow blocking ring is arranged on the edge of the liquid inlet unit, and a liquid outlet sealing ring is arranged on the periphery of the reflux inlet. The liquid inlet sealing ring is at least partially located in an inner side area defined by the liquid inlet flow blocking ring. The utility model aims at preventing the shell from excessively permeating into the membrane bag main body during forming, and ensuring an effective filtering area, so that the filtering efficiency of the filtering membrane bag is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of filtering equipment, and in particular relates to a high-efficiency filtering membrane package. Background Art

[0002] The filter membrane package is a common form of tangential flow filtration. The main structure of the filter membrane package is formed by stacking a liquid inlet unit, a liquid outlet unit and a filter membrane layer, and a corresponding liquid inlet, liquid outlet and reflux port are provided. The independent liquid inlet and liquid outlet channels inside the filter membrane package are realized by sealing the liquid outlet of the liquid inlet unit, the liquid inlet of the liquid outlet unit and the reflux port of the liquid outlet unit. The outer periphery of the main structure of the filter membrane package is sealed by an outer frame to obtain the filter membrane package as a whole. After the material enters the filter membrane package along the liquid inlet of the filter membrane package, it passes through the filtering effect of the filter membrane layer, and the permeate is obtained and discharged from the filter membrane package along the liquid outlet of the filter membrane package, and the residual liquid remaining after filtration is discharged from the filter membrane package along the reflux port of the filter membrane package.

[0003] During the molding process of the filter membrane package, the outer shell of the membrane package is often solidified by a liquid adhesive. During the specific molding process, the adhesive penetrates along the outer edge of the main structure of the filter membrane package to seal the filter membrane package. However, the adhesive is liquid and flowing, and the process of the adhesive penetrating into the main structure of the filter membrane package is less controllable, which makes the outer shell easy to penetrate excessively during the molding process, resulting in a decrease in the effective filtration area of ​​the filter membrane layer, affecting the filtration efficiency of the filter membrane package. Utility Model Content

[0004] The utility model provides a highly efficient filtering membrane package, which prevents the outer shell from excessively penetrating into the membrane package body during molding, thereby ensuring an effective filtering area and thus ensuring the filtering efficiency of the filtering membrane package.

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

[0006] A high-efficiency filtration membrane package comprises a membrane package body and a shell located outside the membrane package body, wherein the membrane package body comprises at least one liquid inlet unit, a filter membrane and a liquid outlet unit, wherein the liquid inlet unit and the liquid outlet unit are stacked, wherein the filter membrane is located between the liquid inlet unit and the liquid outlet unit, wherein the membrane package body is provided with through holes in the liquid inlet unit, the filter membrane and the liquid outlet unit, wherein the through holes comprise a liquid inlet, a liquid outlet and a reflux port, wherein a liquid inlet sealing ring is provided at the periphery of the liquid outlet of the liquid inlet unit, wherein a liquid inlet flow blocking ring is provided at the edge of the liquid inlet unit, wherein the liquid inlet sealing ring is at least partially located in the inner area enclosed by the liquid inlet flow blocking ring. Through the provision of the liquid inlet flow blocking ring, the shell can at most partially cover the liquid inlet flow blocking ring during the molding process, and cannot completely cover the liquid inlet flow blocking ring or penetrate into the liquid inlet flow blocking ring, thereby effectively preventing the effective filtration area of ​​the filter membrane from decreasing and ensuring the filtration efficiency of the filtration membrane package. In addition, during the process of the shell being formed and infiltrating into the membrane package body, the liquid inlet flow blocking ring can avoid the generation of irregular edges, making the edge area of ​​the membrane package body more regular, thereby ensuring the smoothness of filtration.

[0007] Preferably, a liquid outlet sealing ring is provided at the periphery of the liquid inlet and the reflux port of the liquid outlet unit, a liquid outlet flow blocking ring is provided at the edge of the liquid outlet unit, and the liquid outlet sealing ring is located at least partially in the inner area enclosed by the liquid outlet flow blocking ring. The liquid outlet flow blocking ring provided in the liquid outlet unit can further prevent the adhesive from penetrating into the liquid outlet unit during the molding of the shell, and can be clamped and cooperated with the liquid inlet flow blocking ring of the liquid inlet unit to improve the sealing performance of the peripheral area of ​​the filter membrane package.

[0008] Preferably, the liquid inlet choke comprises a first choke located on the side of the membrane package body where the through hole is provided and a second choke located on the side of the membrane package body where the through hole is not provided, and the first choke and the second choke are connected head to tail in sequence.

[0009] Preferably, the liquid outlet choke ring includes a first choke located on the side of the membrane package body where the through hole is provided and a second choke located on the side of the membrane package body where the through hole is not provided, and the first choke and the second choke are connected head to tail in sequence.

[0010] Preferably, the liquid inlet unit includes at least one layer of liquid inlet screen, and the liquid inlet flow blocking rings are respectively arranged on both end surfaces of the liquid inlet screen. The liquid inlet flow blocking rings on both end surfaces of the liquid inlet screen can fully seal the liquid inlet unit and the filter membrane adjacent to the liquid inlet unit, thereby improving the sealing effect of the filter membrane package.

[0011] Preferably, the liquid outlet unit includes at least one layer of liquid outlet screen, and the liquid outlet flow blocking rings are respectively arranged on both end surfaces of the liquid outlet screen. The liquid outlet flow blocking rings on both end surfaces of the liquid outlet screen can fully seal the liquid outlet unit and the filter membrane adjacent to the liquid outlet unit, thereby improving the sealing effect of the filter membrane package.

[0012] Preferably, the interval width between the liquid inlet flow blocker and the outer edge of the liquid inlet unit is 1-10mm; and / or, the width of the liquid inlet flow blocker is 1.5-8.5mm; and / or, the height of the liquid inlet flow blocker protruding from the liquid inlet screen is 20-150μm. The liquid inlet flow blocker with a suitable interval width is conducive to the effective connection between the shell and the liquid inlet unit during molding, preventing leakage and damage at the edge of the liquid inlet unit from causing cross-flow of materials, while ensuring the effective filtration area of ​​the filter membrane. The liquid inlet flow blocker with a suitable width can effectively prevent the shell from infiltrating into the liquid inlet unit during molding, and the shell can at most partially cover the liquid inlet flow blocker after molding, ensuring the effective filtration area of ​​the filter membrane package. During the use of the filter membrane package, the liquid inlet flow blocker has a certain width, which can clamp adjacent filter membranes to prevent the material from cross-flowing around the periphery of the filter membrane. The inlet flow blocker with a suitable protruding height makes it impossible for the shell to completely cover or cross the inlet flow blocker during molding, ensuring that the shell does not affect the effective filtering area of ​​the filter membrane package, and increases the flow channel height between the filter membrane and the inlet unit, thereby improving the filtering efficiency of the filter membrane package. At the same time, during the use of the filter membrane package, the inlet flow blocker can fully seal the adjacent filter membrane, thereby improving the sealing effect of the filter membrane package.

[0013] Preferably, the interval width between the liquid outlet flow blocker and the outer edge of the liquid outlet unit is 1-10mm; and / or, the width of the liquid outlet flow blocker is 1.5-8.5mm; and / or, the height of the liquid outlet flow blocker protruding from the liquid outlet screen is 20-150μm. The liquid outlet flow blocker with a suitable interval width is conducive to the effective connection between the outer shell and the liquid outlet unit during molding, preventing leakage and damage at the edge of the liquid outlet unit from causing cross-flow of materials, and ensuring the effective filtration area of ​​the filter membrane. The liquid outlet flow blocker with a suitable width can effectively prevent the outer shell from infiltrating into the liquid outlet unit during molding, and the outer shell can at most partially cover the liquid outlet flow blocker after molding, ensuring the effective filtration area of ​​the filter membrane package. During the use of the filter membrane package, the liquid outlet flow blocker has a certain width, which can clamp adjacent filter membranes to prevent the material from cross-flowing around the periphery of the filter membrane. The outlet flow blocker with a suitable protruding height makes it impossible for the housing to completely cover or cross the outlet flow blocker during molding, ensuring that the housing does not affect the effective filtering area of ​​the filter membrane package, and increases the flow channel height between the filter membrane and the outlet unit, thereby improving the filtering efficiency of the filter membrane package. At the same time, during the use of the filter membrane package, the outlet flow blocker can fully seal the adjacent filter membrane, thereby improving the sealing effect of the filter membrane package.

[0014] Preferably, the liquid outlet of the liquid inlet unit is formed by the inner edge of the liquid inlet sealing ring, and the diameter of the liquid outlet of the liquid inlet unit is 0.5-1.2 times the width of the liquid inlet sealing ring.

[0015] Preferably, the width of the liquid inlet sealing ring is 8.5-14.5 mm. A liquid inlet sealing ring of appropriate width can fully seal the liquid inlet unit and the adjacent filter membrane, thereby reducing the force required for sealing, which is beneficial to protecting the filter membrane.

[0016] Preferably, the liquid inlet and the reflux port of the liquid outlet unit are both formed by the inner edge of the liquid outlet sealing ring, and the diameters of the liquid inlet and the reflux port of the liquid outlet unit are 0.9-1.5 times the width of the liquid outlet sealing ring.

[0017] Preferably, the width of the liquid outlet sealing ring is 7-12 mm. A liquid outlet sealing ring of appropriate width can fully seal the liquid outlet unit and the adjacent filter membrane, while preventing the liquid outlet sealing ring from partially blocking the adjacent liquid outlet and preventing the effective filtration area of ​​the filter membrane from being affected, thereby ensuring the filtration efficiency of the filter membrane package.

[0018] Preferably, the inner side of the first flow blocking portion overlaps with the outer side of the corresponding liquid inlet sealing ring in the thickness direction of the membrane package body. The overlapping part of the outer side of the liquid inlet sealing ring and the liquid inlet flow blocking ring can prevent glue from penetrating.

[0019] Preferably, the inner side of the first flow blocking portion overlaps with the outer side of the corresponding liquid outlet sealing ring in the thickness direction of the membrane package body. The overlapping part of the outer side of the liquid outlet sealing ring and the liquid outlet flow blocking ring can prevent glue from penetrating.

[0020] Preferably, the liquid inlet flow blocker and the liquid inlet sealing ring are integrally formed; and / or the liquid inlet flow blocker and the liquid inlet sealing ring are made of any one of polyethylene, polypropylene, silicone, polyurethane and epoxy resin. In this way, the structure of the liquid inlet flow blocker and the liquid inlet sealing ring inside the filter membrane package is more compact, greatly reducing the number of parts, which is conducive to reducing the difficulty of assembly and improving the assembly accuracy.

[0021] Preferably, the liquid outlet flow blocker and the liquid outlet sealing ring are integrally formed; and / or the liquid outlet flow blocker and the liquid outlet sealing ring are made of any one of polyethylene, polypropylene, silicone, polyurethane and epoxy resin. In this way, the structure of the liquid outlet flow blocker and the liquid outlet sealing ring inside the filter membrane package is more compact, greatly reducing the number of parts, which is conducive to reducing the difficulty of assembly and improving the assembly accuracy.

[0022] The beneficial effects of the utility model are as follows: (1) by setting the liquid inlet baffle ring, the shell can be blocked by the liquid inlet baffle ring at the periphery of the liquid inlet unit during molding, and the shell at most partially covers the liquid inlet baffle ring after molding, so as to avoid the shell from penetrating into the center position of the liquid inlet unit and affecting the flatness of the inner side of the liquid inlet baffle ring, thereby ensuring the effective filtering area and the smoothness of the filtering; (2) the liquid inlet baffle ring has a certain height, which increases the height of the flow channel between the liquid inlet unit and the filter membrane, improves the liquid inlet efficiency of the filter membrane package, and thus improves the filtering efficiency of the filter membrane package; (3) the liquid inlet baffle ring can fully clamp the adjacent filter membranes and seal the liquid inlet unit and the adjacent filter membranes, thereby preventing the material from flowing through the liquid outlet position of the liquid inlet unit and improving the sealing of the filter membrane package; (4) when the liquid inlet baffle ring and the liquid outlet baffle ring are provided on multiple liquid inlet units and / or liquid outlet units in the filter membrane package, the liquid inlet baffle ring and the liquid outlet baffle ring clamp each other, thereby improving the sealing of the peripheral area of ​​the filter membrane package. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 It is a cross-sectional view of the liquid outlet position of the utility model;

[0025] Figure 3 It is a cross-sectional view of the position of the liquid inlet of the utility model;

[0026] Figure 4 This is a schematic structural diagram of a liquid inlet unit in Embodiment 1 of the present utility model;

[0027] Figure 5 It is a partial enlarged view of the position of the liquid inlet sealing ring of the liquid inlet unit of Example 1 of the utility model;

[0028] Figure 6 This is a cross-sectional view of the connection line between the liquid inlet and the liquid outlet of the liquid inlet unit of Embodiment 1 of the utility model;

[0029] Figure 7 This is a schematic structural diagram of a liquid outlet unit in Embodiment 1 of the present utility model;

[0030] Figure 8 It is a structural schematic diagram of the liquid inlet unit of Example 2 of the utility model.

[0031] In the figure: shell 1, liquid inlet 2, liquid outlet 3, liquid inlet sealing ring 4, membrane package body 5, liquid inlet unit 51, liquid inlet screen 51a, liquid outlet unit 52, liquid outlet screen 52a, filter membrane 53, reflux port 6, liquid inlet baffle 71, liquid outlet baffle 72, second baffle 7a, first baffle 7b, liquid outlet sealing ring 8. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Example 1

[0034] like Figure 1 In the embodiment shown, a high-efficiency filtration membrane package includes a membrane package body 5 and a shell 1 located outside the membrane package body 5, combined with Figure 2 , Figure 3 As shown, the membrane package body 5 includes two liquid inlet units 51, two filter membranes 53 and a liquid outlet unit 52, the liquid inlet units 51 are stacked on both sides of the liquid outlet unit 52, and the filter membrane 53 is located between the liquid inlet unit 51 and the liquid outlet unit 52, thereby forming the structure of the membrane package body 5. A shell 1 is provided on the periphery of the membrane package body 5 to seal it. The membrane package body 5 is provided with through holes in the liquid inlet unit 51, the filter membrane 53 and the liquid outlet unit 52, and the through holes include a liquid inlet 2, a liquid outlet 3 and a reflux port 6. The material enters the filter membrane package through the liquid inlet 2, is distributed along the liquid inlet unit 51, is filtered by the filter membrane 53 to obtain a permeate, enters the liquid outlet unit 52, and is discharged from the filter membrane package through the liquid outlet 3 of the liquid outlet unit 52, and the remaining permeate of the material is discharged from the filter membrane package through the reflux port 6 of the liquid inlet unit 51.

[0035] like Figure 2 As shown, a liquid inlet sealing ring 4 is provided on the outer periphery of the liquid outlet 3 of the liquid inlet unit 51, a liquid inlet flow blocking ring 71 is provided on the edge of the liquid inlet unit 51, and the liquid inlet sealing ring 4 is located in the inner area enclosed by the liquid inlet flow blocking ring 71. Figure 4 As shown, the liquid inlet unit 51 includes a layer of liquid inlet screen 51a, and the liquid inlet flow blocking ring 71 is respectively arranged on the two end surfaces of the liquid inlet screen 51a. The liquid inlet flow blocking ring 71 is formed by liquid adhesive penetrating the liquid inlet screen 51a and solidifying, or welding materials are placed on both sides of the liquid inlet screen 51a and welded. The liquid inlet flow blocking ring 71 includes a first flow blocking portion 7b located on the side where the through hole is set in the membrane package body 5 and a second flow blocking portion 7a located on the side where the through hole is not set in the membrane package body 5, and the first flow blocking portion 7b and the second flow blocking portion 7a are connected head to tail in sequence. The first flow blocking portion 7b and the second flow blocking portion 7a are connected by rounded corners.

[0036] like Figure 5As shown, the interval width a between the liquid inlet flow blocker 71 and the outer edge of the corresponding liquid inlet unit 51 is 1-10mm. When the interval width a is less than 1mm, the width of the outer shell 1 embedded in the liquid inlet unit 51 during molding is insufficient. During the use of the filter membrane package, there is a risk of leakage and damage at the edge of the liquid inlet unit 51, resulting in cross-flow of materials, and even the shell 1 cannot be effectively connected to the liquid inlet unit 51, resulting in the failure of the filter membrane package to be molded; when the interval a between the liquid inlet flow blocker 71 and the edge of the liquid inlet unit 51 is greater than 10mm, the outer shell 1 is prone to excessive infiltration, resulting in a small effective filtration area of ​​the filter membrane package. Due to the large infiltration amount of the outer shell 1, it is easy for the outer shell 1 to pass over the liquid inlet flow blocker 71, affecting the filtration stability and sealing of the filter membrane package.

[0037] like Figure 5 As shown, the width b of the liquid inlet blocking ring 71 is 1.5-8.5 mm. When the width b of the liquid inlet choke 71 is less than 1.5 mm, the shell 1 is easy to completely cover the liquid inlet choke 71 or even pass over the liquid inlet choke 71 to enter the central area of ​​the liquid inlet unit 51 during the molding process, resulting in the filter membrane package being unable to be effectively clamped during use. At the same time, the shell 1 passing over the liquid inlet choke 71 causes the edge regularity of the liquid inlet unit 51 to decrease, affecting the smoothness of the filtration; when the width b of the liquid inlet choke 71 is greater than 8.5 mm, the width b is too large, resulting in a small effective filtration area of ​​the filter membrane package, and there is a risk of blocking the through hole; when the width b of the liquid inlet choke 71 is 1.5-8.5 mm, the liquid inlet choke 71 can effectively block the shell 1 from entering the liquid inlet unit 51, so that at most part of the shell 1 covers the liquid inlet choke 71, ensuring the effective filtration area of ​​the filter membrane package. In addition, the liquid inlet choke 71 has a certain width, which can clamp the adjacent filter membranes 53 during the use of the filter membrane package to avoid cross-flow of materials around the periphery of the filter membrane 53.

[0038] like Figure 6As shown, the height c of the liquid inlet baffle 71 protruding from the corresponding liquid inlet unit 51 is 20-150μm. When the height c of the liquid inlet baffle 71 is less than 20μm, the liquid inlet baffle 71 is insufficient in blocking the infiltration of the housing 1, resulting in the housing 1 completely covering the liquid inlet baffle 71 or crossing the liquid inlet baffle 71, and it is easy to cause the sealing effect between the liquid inlet unit 51 and the adjacent filter membrane 53 to be insufficient, and the material is easy to flow through at the liquid outlet 3 of the liquid inlet unit 51; when the height c of the liquid inlet baffle 71 is greater than 150μm, the liquid inlet baffle 71 is easy to be embedded in the adjacent filter membrane 53, causing the filter membrane 53 to leak. When the height c of the liquid inlet flow blocker 71 is 20-150 μm, the housing 1 cannot completely cover the liquid inlet flow blocker 71 or go over the liquid inlet flow blocker 71, ensuring that the housing 1 will not affect the effective filtering area of ​​the filter membrane package, and increase the flow channel height between the filter membrane 53 and the liquid inlet screen 51a, thereby improving the filtering efficiency of the filter membrane package. At the same time, during the use of the filter membrane package, the liquid inlet flow blocker 71 can fully seal the liquid inlet unit 51 and the adjacent filter membrane 53, thereby improving the sealing effect of the filter membrane package. In addition, the height d of the liquid inlet sealing ring 4 protruding from the corresponding liquid inlet unit 51 should be at least not less than the height c of the liquid inlet flow blocker 71. In this embodiment, the height d is greater than the height c, so that the filter membrane package can be better clamped at the liquid inlet sealing ring 4 after positioning, thereby ensuring the sealing of the liquid outlet 3.

[0039] like Figure 5 As shown, the liquid outlet 3 of the liquid inlet unit 51 is formed by the inner edge of the liquid inlet sealing ring 4, and the diameter e of the liquid outlet 3 of the liquid inlet unit 51 is 0.5-1.2 times the width of the liquid inlet sealing ring. The width f of the liquid inlet sealing ring 4 is 8.5-14.5 mm, and the width of the liquid inlet sealing ring 4 is the distance between the inner edge of the liquid inlet sealing ring 4 and the outer edge of the liquid inlet sealing ring 4. When the width f of the liquid inlet sealing ring 4 is less than 8.5 mm, the width of the liquid inlet sealing ring 4 is small, and its sealing effect is insufficient. During the use of the filter membrane package, the sealing effect between the liquid inlet sealing ring 4 and the adjacent filter membrane 53 is not good, resulting in the cross-flow of materials along the gap between the liquid inlet sealing ring 4 and the filter membrane 53; when the width f of the liquid inlet sealing ring 4 is greater than 14.5 mm, the liquid inlet sealing ring 4 can fully seal the adjacent filter membrane 53, but the effective filtration area of ​​the filter membrane 53 is small, and the liquid inlet sealing ring 4 is large. In order to seal the liquid inlet unit 51 and the adjacent filter membrane 53, a large clamping force is required, which makes the filter membrane 53 at risk of deformation and damage; when the width f of the liquid inlet sealing ring 4 is 8.5-14.5 mm, the liquid inlet sealing ring 4 can fully seal the liquid inlet unit 51 and the adjacent filter membrane 53, and at the same time, it can ensure that no excessive force is required during sealing to avoid damage to the filter membrane 53.

[0040] like Figure 4 , Figure 5As shown, the inner side of the first flow blocking portion 7b overlaps with the outer side of the corresponding liquid inlet sealing ring 4 in the thickness direction of the membrane package body 5, and the overlapping part of the outer side of the liquid inlet sealing ring 4 and the liquid inlet flow blocking ring 71 can also play a role in preventing glue penetration.

[0041] like Figure 7 As shown, a liquid outlet sealing ring 8 is provided on the periphery of the liquid inlet 2 and the reflux port 6 of the liquid outlet unit 52, a liquid outlet flow blocking ring 72 is provided on the edge of the liquid outlet unit 52, and the liquid outlet sealing ring 8 is located inside the liquid outlet flow blocking ring 72. Figure 3 As shown, the liquid outlet unit 52 includes a layer of liquid outlet screen 52a, and the liquid outlet flow blocking ring 72 is respectively arranged on the two end surfaces of the liquid outlet screen 52a. The liquid inlet 2 and the reflux port 6 of the liquid outlet unit 52 are both formed by the inner edge of the liquid outlet sealing ring 8, and the diameter of the liquid inlet 2 and the reflux port 6 of the liquid outlet unit 52 is 0.9-1.5 times the width of the liquid outlet sealing ring. The width of the liquid outlet sealing ring 8 is 7-12mm. When the width of the liquid outlet sealing ring 8 is less than 7mm, the width of the liquid outlet sealing ring 8 is insufficient, and the effective filtration area of ​​the filter membrane 53 increases, but the sealing of the filter membrane package is insufficient, and there is a risk of leakage during the use of the filter membrane package; when the width of the liquid outlet sealing ring 8 is greater than 12mm, the liquid outlet sealing ring 8 can fully seal the filter membrane package, but the liquid outlet sealing ring 8 partially blocks the adjacent liquid outlet 3, affecting the smoothness of the filtration, and the effective filtration area of ​​the filter membrane 53 is relatively small, which reduces the filtration efficiency of the filter membrane package.

[0042] The liquid inlet choke 71 and the corresponding liquid inlet sealing ring 4, as well as the liquid outlet choke 72 and the corresponding liquid outlet sealing ring 8 are made of any one of polyethylene, polypropylene, silicone, polyurethane and epoxy resin. The liquid inlet choke 71 and the corresponding liquid inlet sealing ring 4, as well as the liquid outlet choke 72 and the corresponding liquid outlet sealing ring 8 are integrally formed, which is convenient for overall positioning and installation during assembly, reducing the difficulty of production and processing.

[0043] Example 2

[0044] The difference between Example 2 and Example 1 is that Figure 8 As shown, the liquid inlet blocking ring 71 and the corresponding liquid inlet sealing ring 4 are independently arranged. For a larger-sized filter membrane package, the distance between the through hole and the liquid inlet blocking ring 71 is larger. After the liquid inlet blocking ring 71 and the liquid inlet sealing ring 4 are separated, the inner side of the first blocking portion 7b has no overlap with the corresponding liquid inlet sealing ring 4 in the thickness direction of the membrane package body 5, which can ensure that the filter membrane package has a larger effective filtration area.

[0045] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A high-efficiency filtration membrane package, comprising a membrane package body and a shell (1) located outside the membrane package body, wherein the membrane package body comprises at least one liquid inlet unit (51), a filter membrane (53) and a liquid outlet unit (52), wherein the liquid inlet unit (51) and the liquid outlet unit (52) are stacked, wherein the filter membrane (53) is located between the liquid inlet unit (51) and the liquid outlet unit (52), wherein the membrane package body is provided with through holes through the liquid inlet unit (51), the filter membrane (53) and the liquid outlet unit (52), wherein the through holes comprise a liquid inlet port (2), a liquid outlet port (3) and a reflux port (6), wherein: A liquid inlet sealing ring (4) is provided on the outer periphery of the liquid outlet (3) of the liquid inlet unit (51), a liquid inlet flow blocking ring (71) is provided on the edge of the liquid inlet unit (51), and the liquid inlet sealing ring (4) is at least partially located in the inner area enclosed by the liquid inlet flow blocking ring (71).

2. A high-efficiency filtration membrane package according to claim 1, characterized in that: A liquid outlet sealing ring (8) is provided on the periphery of the liquid inlet (2) and the reflux port (6) of the liquid outlet unit (52), a liquid outlet flow blocking ring (72) is provided on the edge of the liquid outlet unit (52), and the liquid outlet sealing ring (8) is at least partially located in the inner area enclosed by the liquid outlet flow blocking ring (72).

3. A high-efficiency filtration membrane package according to claim 1 or 2, characterized in that: The liquid inlet flow blocking ring (71) comprises a first flow blocking portion (7b) located on the side of the membrane package body (5) where a through hole is provided, and a second flow blocking portion (7a) located on the side of the membrane package body (5) where no through hole is provided, wherein the first flow blocking portion (7b) and the second flow blocking portion (7a) are connected end to end in sequence.

4. A high-efficiency filtration membrane package according to claim 2, characterized in that: The liquid outlet flow blocking ring (72) comprises a first flow blocking portion (7b) located on the side of the membrane package body (5) where a through hole is provided, and a second flow blocking portion (7a) located on the side of the membrane package body (5) where no through hole is provided, wherein the first flow blocking portion (7b) and the second flow blocking portion (7a) are connected end to end in sequence.

5. A high-efficiency filtration membrane package according to claim 1 or 2, characterized in that: The liquid inlet unit (51) comprises at least one layer of liquid inlet screen (51a), and the liquid inlet flow blocking rings (71) are respectively arranged on both end surfaces of the liquid inlet screen (51a).

6. A high-efficiency filtration membrane package according to claim 2, characterized in that: The liquid outlet unit (52) comprises at least one layer of liquid outlet screen (52a), and the liquid outlet flow blocking rings (72) are respectively arranged on both end surfaces of the liquid outlet screen (52a).

7. A high-efficiency filtration membrane package according to claim 1 or 2, characterized in that: The width of the interval between the liquid inlet baffle ring (71) and the outer edge of the liquid inlet unit (51) is 1-10 mm; and / or the width of the liquid inlet baffle ring (71) is 1.5-8.5 mm; and / or the height of the liquid inlet baffle ring (71) protruding from the liquid inlet screen (51a) is 20-150 μm.

8. A high-efficiency filtration membrane package according to claim 2, characterized in that: The width of the interval between the liquid outlet flow blocking ring (72) and the outer edge of the liquid outlet unit (52) is 1-10 mm; and / or the width of the liquid outlet flow blocking ring (72) is 1.5-8.5 mm; and / or the height of the liquid outlet flow blocking ring (72) protruding from the liquid outlet screen (52a) is 20-150 μm.

9. A high-efficiency filtration membrane package according to claim 1 or 2, characterized in that: The liquid outlet (3) of the liquid inlet unit (51) is formed by the inner edge of the liquid inlet sealing ring (4), and the diameter of the liquid outlet (3) of the liquid inlet unit (51) is 0.5-1.2 times the width of the liquid inlet sealing ring (4).

10. A high-efficiency filtration membrane package according to claim 1 or 2, characterized in that: The width of the liquid inlet sealing ring (4) is 8.5-14.5 mm.

11. A high-efficiency filtration membrane package according to claim 2, characterized in that: The liquid inlet (2) and the reflux port (6) of the liquid outlet unit (52) are both formed by the inner edge of the liquid outlet sealing ring (8), and the diameters of the liquid inlet (2) and the reflux port (6) of the liquid outlet unit (52) are 0.9-1.5 times the width of the liquid outlet sealing ring (8).

12. A high-efficiency filtration membrane package according to claim 2, characterized in that: The width of the liquid outlet sealing ring (8) is 7-12 mm.

13. A high-efficiency filtration membrane package according to claim 3, characterized in that: The first flow blocking portion (7b) and the second flow blocking portion (7a) are connected by chamfering or rounding.

14. A high-efficiency filtration membrane package according to claim 3, characterized in that: The inner side of the first flow blocking portion (7b) overlaps with the outer side of the corresponding liquid inlet sealing ring (4) in the thickness direction of the membrane package body (5).

15. The high-efficiency filtration membrane package according to claim 4, characterized in that: The inner side of the first flow blocking portion (7b) overlaps with the outer side of the corresponding liquid outlet sealing ring (8) in the thickness direction of the membrane package body (5).

16. A high-efficiency filtration membrane package according to claim 1 or 2, characterized in that: The liquid inlet flow blocker (71) and the liquid inlet sealing ring (4) are integrally formed; and / or the liquid inlet flow blocker (71) and the liquid inlet sealing ring (4) are made of any one of polyethylene, polypropylene, silicone, polyurethane and epoxy resin.

17. A high-efficiency filtration membrane package according to claim 2, characterized in that: The liquid outlet flow blocking ring (72) and the liquid outlet sealing ring (8) are integrally formed; and / or the liquid outlet flow blocking ring (72) and the liquid outlet sealing ring (8) are made of any one of polyethylene, polypropylene, silicone, polyurethane and epoxy resin.

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