Filtering membrane bag capable of rapidly guiding flow

Abstract

The utility model discloses a filtering membrane bag capable of quickly guiding flow, which comprises a shell, a liquid inlet screen and a penetrating screen, the liquid inlet screen and the penetrating screen are positioned in the shell, a filtering membrane layer is arranged between the liquid inlet screen and the penetrating screen, and the liquid inlet screen, the filtering membrane layer and the penetrating screen are provided with through holes corresponding in position. The through hole comprises a liquid inlet, a liquid outlet and a reflux inlet, the liquid outlet of the liquid inlet screen is provided with a liquid inlet packaging ring, the outer edge of the liquid inlet screen is provided with a liquid inlet sealing ring, and a flow guide arc is arranged between the liquid inlet packaging ring and the liquid inlet sealing ring. Materials are smoothly and stably guided through the flow guide arcs, the materials are prevented from being enriched and accumulated, meanwhile, the materials are guided to be distributed into the filtering membrane bag more quickly, and the filtering efficiency of the filtering membrane bag is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of filter filtration, and in particular relates to a fast-guiding filter membrane package. Background Art

[0002] The filter membrane separation technology is a technology that relies on the pressure difference between the filter membrane and its two sides to achieve the separation, purification and refinement of small molecules and interception of macromolecules. According to the relationship between the material flow direction and the material filtration direction, the filter membrane separation technology can be divided into dead-end filtration and tangential flow filtration. In the dead-end filtration, the material flow direction is consistent with the material filtration direction, resulting in a large number of intercepted macromolecules enriched on the filter membrane surface, forming a gel layer or a filter cake layer, resulting in a decrease in filtration efficiency and a shortened filter membrane life; in the tangential flow filtration, the material flow direction is perpendicular to the material filtration direction, so that the macromolecules intercepted on the filter membrane surface are washed and cannot be enriched, extending the service life of the filter membrane and maintaining the filter membrane with a stable filtration efficiency. For example, Chinese patent publication number: CN219764735U discloses a filter membrane package and a filter, wherein the filter membrane package is provided with a sealing structure on the periphery of the liquid inlet, liquid outlet and reflux port. Under the clamping action, the sealing structure and the adjacent filter membrane layer or screen mesh are squeezed against each other to achieve sealing of the filter membrane package. However, the setting of the sealing structure also creates dead corners when the material flows on the screen. The material is easily enriched in this area, affecting the yield of the material and causing a decrease in filtration efficiency. Utility Model Content

[0003] The utility model provides a fast-guiding filter membrane package, which guides materials smoothly and stably through a guide arc to avoid material enrichment and accumulation, while guiding the materials to be distributed into the filter membrane package more quickly to ensure the filtering efficiency of the filter membrane package.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A fast diversion filter membrane package comprises a shell, and a liquid inlet screen and a permeation screen located inside the shell, a filter membrane layer is arranged between the liquid inlet screen and the permeation screen, the liquid inlet screen, the filter membrane layer and the permeation screen are provided with through holes corresponding to the positions, the through holes include a liquid inlet, a liquid outlet and a reflux port, the liquid outlet of the liquid inlet screen is provided with a liquid inlet packaging ring, the outer edge of the liquid inlet screen is provided with a liquid inlet sealing ring, and a diversion arc is arranged between the liquid inlet packaging ring and the liquid inlet sealing ring. The arrangement of the liquid inlet packaging ring and the liquid inlet sealing ring has a certain degree of blocking effect on the feed liquid, and can make the feed liquid flow along a certain path. A diversion arc is arranged between the liquid inlet packaging ring and the liquid inlet sealing ring, so that the connection between the liquid inlet packaging ring and the liquid inlet sealing ring can be smoothly transitioned, eliminating the dead zone of the connection area, thereby avoiding material enrichment, and at the same time, when the material enters from the liquid inlet, it can be quickly distributed into the liquid inlet screen under the action of the diversion arc, thereby improving the utilization rate of the liquid inlet screen. The guide arc makes the material guiding process smooth and stable, which is beneficial to improving the filtration efficiency of the filter membrane package and the stability of the filtration process.

[0006] Preferably, the liquid inlet and the reflux port of the permeable screen are respectively provided with a permeable packaging ring, the outer edge of the permeable screen is provided with a permeable sealing ring, and a guide arc is provided between the permeable packaging ring and the permeable sealing ring at the outer edge of the permeable screen. A corresponding guide arc is also provided on the permeable screen, so that the material can smoothly enter the liquid outlet, further improving the guide effect.

[0007] Preferably, the distance between the guide arc and the adjacent through hole without a liquid inlet packaging ring or a through packaging ring is 0-10 mm. The guide arc can avoid collision between materials while maintaining a good guiding effect on the materials, thereby ensuring a smooth flow of the materials.

[0008] Preferably, a guide surface is provided between the guide arc and the adjacent through hole without a liquid inlet packaging ring or a through packaging ring, and the area of ​​the guide surface is 40-120% of the area of ​​the liquid inlet. A suitable guide surface area can ensure a stable material flow rate and a moderate material load, and ensure that most of the material is diffused to the liquid inlet screen.

[0009] Preferably, the height of the guide arc is 90-260 μm. A guide arc with a certain height can effectively guide the material to diffuse into the liquid inlet screen, while reducing the pressure on the filter membrane layer and preventing the filter membrane layer from being damaged at the position corresponding to the guide arc.

[0010] Preferably, the liquid inlet packaging ring is integrally formed with the corresponding guide arc; or, the liquid inlet packaging ring is integrally formed with the corresponding guide arc and the liquid inlet sealing ring; or, the liquid inlet sealing ring is integrally formed with the corresponding guide arc. The integral molding facilitates overall installation and positioning during connection, thereby improving assembly convenience and assembly accuracy.

[0011] Preferably, the permeable packaging ring is integrally formed with the corresponding guide arc; or the permeable packaging ring is integrally formed with the corresponding guide arc and the permeable sealing ring; or the permeable sealing ring is integrally formed with the corresponding guide arc. The integral molding facilitates overall installation and positioning during connection, thereby improving assembly convenience and assembly accuracy.

[0012] Preferably, the permeable sealing ring seals the filter membrane layer and the permeable screen; or, the liquid inlet sealing ring seals the filter membrane layer and the liquid inlet screen; or, the liquid inlet sealing ring and the permeable sealing ring seal the filter membrane layer, the liquid inlet screen and the permeable screen.

[0013] Preferably, the guide arc is any one of polypropylene, polyethylene, polyvinyl chloride, polyurethane, silicone, and epoxy resin.

[0014] Preferably, the opening ratio of the liquid inlet screen and the permeation screen is 25-32%, the opening diameter of the liquid inlet screen is 270-450 μm, and the opening diameter of the permeation screen is 150-300 μm. In this way, the material flow rate is guaranteed, which is conducive to improving the filtration efficiency, while avoiding the turbulence of the material caused by the dense openings and affecting the stability of the filtration.

[0015] Preferably, the edge of the liquid inlet screen and / or the permeable screen protrudes from the outer edge of the corresponding liquid inlet sealing ring or permeable sealing ring. In this way, the edge of the liquid inlet screen and the permeable screen is convenient for processing and forming with the corresponding liquid inlet sealing ring or permeable sealing ring and the integral forming of the filter membrane package.

[0016] The beneficial effects of the utility model are: (1) the material entering the filter membrane package is guided by the guide arc to avoid material enrichment and ensure the filtration efficiency; (2) the smoothness of material flow is improved to prevent the collision and turbulence between materials and ensure the stability of the filtration process; (3) the guide arc can improve the sealing effect between the filter membrane layer and ensure the sealing between the screen and the filter membrane layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is an exploded view of the structure of Embodiment 1 of the present utility model;

[0019] Figure 3 It is a partial enlarged view of the guide surface of the utility model;

[0020] Figure 4 It is a partial enlarged view of the guide arc of the utility model;

[0021] Figure 5It is a structural schematic diagram of the liquid inlet screen of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the screen through the embodiment 1 of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the screen through the embodiment 2 of the utility model;

[0024] Figure 8 It is a partial enlarged view of the embodiment 2 of the utility model through the screen;

[0025] Fig. 9 It is another structural schematic diagram of the penetrating screen of Example 2 of the utility model.

[0026] In the figure: liquid inlet sealing ring 1, liquid inlet packaging ring 2, shell 3, membrane package main structure 4, reflux port 4a, liquid inlet 4b, liquid outlet 4c, liquid inlet screen 41, permeable screen 42, filter membrane layer 43, guide arc 5, permeable packaging ring 6, guide surface 7, permeable sealing ring 8. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Example 1

[0029] like Figure 1 In the embodiment shown, a fast-flow-guiding filtration membrane package includes a housing 3 and a liquid inlet screen 41 and a permeable screen 42 located inside the housing 3. Figure 2 As shown, a filter membrane layer 43 is provided between the liquid inlet screen 41 and the permeation screen 42, and the outermost screen layers of the filter membrane package are all liquid inlet screens 41. The liquid inlet screen 41, the filter membrane layer 43 and the permeation screen 42 are arranged and stacked to form a membrane package main structure 4, and then the membrane package main structure 4 is sealed and fixed on its periphery by the shell 3 to obtain a filter membrane package as a whole. The liquid inlet screen 41, the filter membrane layer 43 and the permeation screen 42 are provided with through holes corresponding to the positions, and the through holes include a liquid inlet 4b, a liquid outlet 4c and a reflux port 4a. The material enters the filter membrane package through the liquid inlet 4b, is distributed in the liquid inlet screen 41, is filtered by the filter membrane layer 43, and the permeate is obtained and enters the permeate screen 42, and is discharged from the filter membrane package along the liquid outlet 4c of the permeate screen 42, and the residual liquid remaining after filtration is discharged from the filter membrane package along the reflux port 4a of the liquid inlet screen 41.

[0030] like Figure 3As shown, the liquid outlet 4c of the liquid inlet screen 41 is provided with a liquid inlet packaging ring 2, and the outer edge of the liquid inlet screen 41 is provided with a liquid inlet sealing ring 1, wherein the liquid inlet packaging ring 2 is arranged around the liquid outlet 4c of the liquid inlet screen 41, and the liquid inlet packaging ring 2 seals the filter membrane layer 43 and the liquid inlet screen 41. The liquid inlet packaging ring 2 can be formed by the adhesive penetrating the liquid inlet screen 41 and solidifying, or by setting a welding sheet at the liquid outlet 4c of the liquid inlet screen 41 and welding. The liquid inlet sealing ring 1 is arranged at the circumferential edge of the liquid inlet screen 41, and can also be formed by adhesive solidification or welding of welding sheets.

[0031] A guide arc 5 is provided between the liquid inlet packaging ring 2 and the liquid inlet sealing ring 1, and the guide arc 5 extends from the liquid inlet port 4b close to the shell 3 side to the inside of the liquid inlet screen 41. When the material enters from the liquid inlet port 4b, it is quickly distributed and enters the liquid inlet screen 41 under the action of the guide arc 5. In this embodiment, guide arcs 5 are provided on both sides of the connection between the liquid inlet packaging ring 2 and the liquid inlet sealing ring 1, which can further improve the guiding effect and also improve the sealing between the filter membrane layer 43 and the liquid inlet screen 41.

[0032] The distance between the guide arc 5 and the adjacent through hole without the liquid inlet packaging ring 2 is 0-10 mm. Figure 4 As shown, the minimum distance a between the guide arc 5 and the adjacent through hole without the liquid inlet packaging ring 2, and the maximum distance b between the guide arc 5 and the adjacent through hole without the liquid inlet packaging ring 2, both should be between 0-10mm. When the minimum distance a is greater than 10mm, the material flows into the liquid inlet screen 41 between the liquid inlet 4b and the liquid inlet sealing ring 1, and then impacts with the material in other directions, resulting in a decrease in the stability of the material, and when the distance is too large, the material is easy to flow along the guide arc 5 to the adjacent guide arc 5, resulting in turbulence between materials in different directions; when the maximum distance b is greater than 10mm, the material flows along the gap between the guide arc 5 and the adjacent through hole to the inside of the liquid inlet screen 41, and the guide arc 5 has insufficient guiding effect on the material, resulting in too fast flow rate of the material in the liquid inlet screen 41, affecting the stability of the filtration.

[0033] like Figure 1 , Figure 3As shown, a guide surface 7 is provided between the guide arc 5 and the adjacent through hole without the liquid inlet packaging ring 2, and the area of ​​the guide surface 7 is 40-120% of the area of ​​the liquid inlet 4b. When the area of ​​the guide surface 7 is too small, when the material enters the liquid inlet screen 41 along the liquid inlet 4b, the part diffused in the guide surface 7 can be quickly guided by the guide arc 5 to flow to the nearest return port 4a, but because the area of ​​the guide surface 7 is too small, the material is overly concentrated, so that the material load in most areas of the liquid inlet screen 41 is small, and at the same time, the stability of the material with too fast flow rate decreases, resulting in a decrease in the filtration efficiency of the filter membrane package; when the area of ​​the guide surface 7 is too large, the material cannot quickly contact the guide arc 5 after flowing into the guide surface 7, so that most of the material diffuses into the liquid inlet screen 41 but does not flow to the return port 4a, resulting in a decrease in the liquid inlet efficiency of the filter membrane package.

[0034] The height of the guide arc 5 is 90-260μm. When the height of the guide arc 5 is too small, there is a gap between the guide arc 5 and the adjacent filter membrane layer 43. After the material enters the liquid inlet screen 41 from the liquid inlet 4b, the too small height of the guide arc 5 is not enough to guide the material to diffuse along the guide arc 5 to the liquid inlet screen 41, and the gap between the guide arc 5 and the adjacent filter membrane layer 43 also allows the material to flow directly into the liquid inlet screen 41 without passing through the guide arc 5; when the height of the guide arc 5 is too large, the excessively high guide arc 5 presses the filter membrane layer 43, causing the filter membrane layer 43 to be damaged at the position corresponding to the guide arc 5.

[0035] like Figure 5 As shown, the edge of the liquid inlet screen 41 protrudes from the outer edge of the liquid inlet sealing ring 1, and the edge of the liquid inlet screen 41 is convenient for processing and forming with the liquid inlet sealing ring 1 and the integral forming of the filter membrane package.

[0036] like Figure 6 As shown, the liquid inlet 4b and the reflux port 4a of the permeable screen 42 are respectively provided with a permeable packaging ring 6, and the permeable packaging ring 6 seals the filter membrane layer 43 and the permeable screen 42. The opening rate of the liquid inlet screen 41 and the permeable screen 42 is 25-32%. The opening aperture of the liquid inlet screen 41 is 270-450μm, so that the material flows quickly and the filtration efficiency is improved, while avoiding the turbulence of the material caused by the dense openings, which affects the stability of the filtration. The opening aperture of the permeable screen 42 is 150-300μm, which is smaller than the opening aperture of the liquid inlet screen 41, which can ensure the stability of the permeate flow and reduce the turbulence of the material.

[0037] In order to improve the integrity between the liquid inlet packaging ring 2, the guide arc 5 and the liquid inlet sealing ring 1, reduce the number of parts and components to simplify the assembly and connection process, in this embodiment, the liquid inlet packaging ring 2 and the corresponding liquid inlet sealing ring 1 and the guide arc 5 are integrally formed as a single component, which can greatly reduce the difficulty of assembly and improve the equipment accuracy.

[0038] The guide arc 5 is any one of polypropylene, polyethylene, polyvinyl chloride, polyurethane, silicone, and epoxy resin, so as to facilitate the integrated molding of the liquid inlet sealing ring 1, the liquid inlet packaging ring 2, and the guide arc 5, and the integrated liquid inlet sealing ring 1, the liquid inlet packaging ring 2, and the guide arc 5 are connected to the shell 3.

[0039] Example 2

[0040] The difference between Example 2 and Example 1 is that Figure 7 , Figure 8 As shown, the liquid inlet 4b and the reflux port 4a of the permeable screen 42 are respectively provided with a permeable packaging ring 6, the outer edge of the permeable screen 42 is provided with a permeable sealing ring 8, and a guide arc 5 is provided between the permeable packaging ring 6 of the liquid inlet 4b of the permeable screen 42 and the permeable sealing ring 8 at the outer edge of the permeable screen 42. The guide arc 5 extends from the liquid inlet 4b and the reflux port 4a to the inside of the permeable screen 42 near the shell 3. When the material enters the permeable screen 42 after being filtered by the filter membrane layer 43, it flows along the permeable screen 42 to the liquid outlet 4c, and under the action of the guide arc 5, it can smoothly enter the liquid outlet 4c. In this embodiment, the guide arc 5 is provided on both sides of the connection between the permeable packaging ring 6 and the permeable sealing ring 8, which can further improve the diversion effect and also improve the sealing between the filter membrane layer 43 and the permeable screen 42.

[0041] In addition, if Fig. 9 As shown, the permeable screen 42 can also be provided with a guide arc 5 at the inner corner of the permeable sealing ring 8, effectively increasing the flow of materials at each inner corner of the permeable sealing ring 8, and avoiding the formation of a filtration dead angle. The edge of the permeable screen 42 protrudes from the outer edge of the permeable sealing ring 8, thereby facilitating the processing and forming of the edge portion of the permeable screen 42 and the permeable sealing ring 8 and the overall forming of the filter membrane package.

[0042] The penetration packaging ring 6 is integrally formed with the corresponding guide arc 5 and the penetration sealing ring 8, which can improve the integrity of the parts, reduce the number of parts to simplify the assembly and connection process, and improve the equipment accuracy. In this embodiment, the penetration packaging ring 6 seals the filter membrane layer 43 and the penetration screen 42, and the sealing includes any one of extrusion sealing, adhesive sealing, heat welding sealing and integral molding connection.

[0043] 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 fast-flow-guiding filtration membrane package, comprising a housing (3) and a liquid inlet screen (41) and a permeable screen (42) located inside the housing (3), a filtration membrane layer (43) being provided between the liquid inlet screen (41) and the permeable screen (42), the liquid inlet screen (41), the filtration membrane layer (43) and the permeable screen (42) being provided with through holes corresponding to positions, the through holes comprising a liquid inlet (4b), a liquid outlet (4c) and a reflux port (4a), wherein: The liquid outlet (4c) of the liquid inlet screen (41) is provided with a liquid inlet packaging ring (2), the outer edge of the liquid inlet screen (41) is provided with a liquid inlet sealing ring (1), and a guide arc (5) is provided between the liquid inlet packaging ring (2) and the liquid inlet sealing ring (1).

2. A fast flow-guiding filtration membrane package according to claim 1, characterized in that: The liquid inlet (4b) and the return port (4a) of the permeable screen (42) are respectively provided with a permeable packaging ring (6), the outer edge of the permeable screen (42) is provided with a permeable sealing ring (8), and a guide arc (5) is provided between the permeable packaging ring (6) and the permeable sealing ring (8) at the outer edge of the permeable screen (42).

3. A fast flow-guiding filtration membrane package according to claim 1 or 2, characterized in that: The distance between the guide arc (5) and an adjacent through hole not provided with a liquid inlet packaging ring (2) or a through packaging ring (6) is 0-10 mm.

4. A fast flow-guiding filtration membrane package according to claim 1 or 2, characterized in that: A guide surface (7) is provided between the guide arc (5) and an adjacent through hole that is not provided with a liquid inlet packaging ring (2) or that passes through the packaging ring (6), and the area of ​​the guide surface (7) is 40-120% of the area of ​​the liquid inlet (4b).

5. A fast flow-guiding filtration membrane package according to claim 1 or 2, characterized in that: The height of the guide arc is 90-260 μm.

6. A fast flow-guiding filtration membrane package according to any one of claims 1 or 2, characterized in that: The liquid inlet packaging ring (2) and the corresponding guide arc (5) are integrally formed; or, the liquid inlet packaging ring (2) and the corresponding guide arc (5) and the liquid inlet sealing ring (1) are integrally formed; or, the liquid inlet sealing ring (1) and the corresponding guide arc (5) are integrally formed.

7. A fast flow-guiding filtration membrane package according to claim 2, characterized in that: The transparent packaging ring (6) is integrally formed with the corresponding guide arc (5); or, the transparent packaging ring (6) is integrally formed with the corresponding guide arc (5) and the transparent sealing ring (8); or, the transparent sealing ring (8) is integrally formed with the corresponding guide arc (5).

8. A fast flow-guiding filtration membrane package according to claim 2, characterized in that: The permeable sealing ring (8) seals the filter membrane layer (43) and the permeable screen (42); or, the liquid inlet sealing ring (1) seals the filter membrane layer (43) and the liquid inlet screen (41); or, the liquid inlet sealing ring (1) and the permeable sealing ring (8) seal the filter membrane layer (43), the liquid inlet screen (41) and the permeable screen (42).

9. A fast flow-guiding filtration membrane package according to any one of claims 1 or 2, characterized in that: The guide arc (5) is any one of polypropylene, polyethylene, polyvinyl chloride, polyurethane, silicone, and epoxy resin.

10. A fast flow-guiding filtration membrane package according to any one of claims 1 or 2, characterized in that: The opening ratio of the liquid inlet screen (41) and the permeable screen (42) is 25-32%, the opening diameter of the liquid inlet screen (41) is 270-450 μm, and the opening diameter of the permeable screen (42) is 150-300 μm.

11. A fast flow-guiding filtration membrane package according to any one of claims 1 or 2, characterized in that: The edges of the liquid inlet screen (41) and / or the penetration screen (42) protrude from the outer edges of the corresponding liquid inlet sealing ring (1) or penetration sealing ring (8).

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