Quick-release hollow fiber membrane module and use method thereof

Abstract

The invention belongs to the field of separation, and particularly relates to a quick-release hollow fiber membrane module and a use method thereof. The quick-release hollow fiber membrane module comprises a filter element and a connecting piece, the filter element comprises a shell, a membrane tow arranged in the shell, water inlet and outlet ends arranged at the two ends of the membrane tow and a plurality of water production ports formed in the shell; the connecting piece comprises an outer locking block, a fixing block and an inner locking block which are connected in sequence; and the connecting piece is connected with the water inlet / outlet end. After the filter element of the quick-release hollow fiber membrane module reaches the service life, the whole membrane does not need to be replaced together, and only the filter element part needs to be replaced, so that the reduction of a scrapped membrane module is realized.

Description

Technical Field

[0001] The invention belongs to the field of separation, and in particular relates to a quick-disassembly type hollow fiber membrane component and a use method thereof. Background Art

[0002] With the widespread application of membrane technology in the field of water treatment, a huge number of scrapped membrane modules are eliminated every year. Most of the column membrane products on the market are single-use. When the membrane fiber reaches the end of its service life, the entire membrane module is replaced together.

[0003] The current hollow fiber column membrane assembly includes a pressure-bearing housing, an end head, an end cover, a clamp, and accessories connected to the pipeline. This structural form is the most common column membrane structural form on the market. Imported brands including Dow Chemical, GE, and many domestic brands all have this structural form. The differences between them lie in the different location dimensions of the inlet and outlet, the diameter and length specifications of the membrane assembly, the packaging area, and the production process. Some manufacturers have also disclosed a detachable filter membrane assembly, the main feature of which is that it includes a pressure-bearing housing, an end head, an end cover, a clamp, and accessories connected to the pipeline to form a membrane assembly housing, and then the hollow fiber membrane is cast in another housing as a filter element and placed in the membrane assembly housing to form the final membrane assembly; although this method solves the problem that after the membrane fiber reaches its service life, only the filter element needs to be replaced, and the entire membrane does not need to be replaced, which can reduce the scrapping of the membrane shell, but the product manufacturing process of this structure is complicated, the disassembly and assembly process is numerous, and there is also a risk of easy leakage. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a quick-release hollow fiber membrane assembly and a method for using the same.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A quick-release hollow fiber membrane assembly comprises a filter element and a connector; the filter element comprises an outer shell, a membrane bundle arranged in the outer shell, water inlet and outlet ends arranged at both ends of the membrane bundle, and a plurality of water outlets arranged on the outer shell; the connector comprises an outer locking block, a fixing block and an inner locking block connected in sequence; the connector is connected to the water inlet and outlet ends.

[0007] The diameter of the water outlet is 6mm-63mm; the distance between the water outlet and the outer end surface of the water inlet and outlet is 23mm-105mm.

[0008] The upper and lower sides of the fixing block are respectively threadedly connected to the outer locking block and the inner locking block; preferably, the upper and lower sides of the fixing block are respectively provided with inner thread structures, and the outer locking block and the inner locking block are provided with corresponding outer thread structures.

[0009] One end of the outer locking block away from the fixing block is provided with a water inlet and outlet.

[0010] The fixed block is provided with a water production channel which is communicated with the water production port.

[0011] A sealing ring is arranged between the fixing block, the outer locking block and the inner locking block.

[0012] The water inlet and outlet are provided with water inlet and outlet sealing glue; the membrane bundle is fixed in the water inlet and outlet sealing glue; the port of the membrane bundle is exposed on the outer end surface of the water inlet and outlet sealing glue.

[0013] The present invention also includes a method for using the quick-release hollow fiber membrane assembly, comprising the following steps: 1) inserting an inner locking block, a sealing ring, a fixed block, a sealing ring, and an outer locking block into the two ends of the filter element in a symmetrical manner at both ends and pressing them into place; 2) rotating the outer locking block and the inner locking block clockwise and counterclockwise respectively, and when the outer locking block and the inner locking block are locked, the sealing ring in the fixed block is squeezed and deformed to achieve sealing; 3) when replacing, rotate the outer locking block and the inner locking block in the opposite direction to loosen the outer locking block and the inner locking block, remove the fixed block and replace the filter element.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] After the filter element of the quick-detachable hollow fiber membrane assembly of the present invention reaches the end of its service life, there is no need to replace the entire membrane together, only the filter element part needs to be replaced, thereby achieving a reduction in the number of scrapped membrane assemblies; and its structure is simple, and compared with the traditional hollow fiber membrane assembly structure, the design of the end barrel accessories is omitted, so the production cost and the mold development of the early plastic accessories are reduced to varying degrees; since there is no design of the end barrel accessories, the water inlet and outlet sealants are directly cast and packaged in the outer shell, thus compared with the production of traditional hollow fiber column membrane assemblies, the bonding process of the end barrel and the outer shell and the sealing detection process are omitted; the production cycle of the hollow fiber column membrane assembly is shortened, and the production efficiency of the hollow fiber column membrane assembly is improved; and the filter element is directly exposed to the outside, achieving the goal of rapid replacement and rapid production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the structure of the filter element of the quick-disassembly hollow fiber membrane assembly; a is a schematic diagram of the composition, and b is an appearance diagram;

[0017] Figure 2 It is a schematic diagram of the mechanism of the connector of the quick-release hollow fiber membrane module; a is an appearance diagram, and b is a schematic diagram of the components;

[0018] Figure 3 It is a cross-sectional view of a quick-release hollow fiber membrane assembly. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiments.

[0020] Figure 1-3 A quick-release hollow fiber membrane assembly is shown, including a filter element 1 and a connector 2; the filter element includes a shell 12, a membrane fiber bundle 11 arranged in the shell, water inlet and outlet ends 13 arranged at both ends of the membrane fiber bundle, and a plurality of water outlets 14 arranged on the shell.

[0021] The connector 2 includes an outer locking block 21, a fixing block 22 and an inner locking block 23 connected in sequence; the connector 2 is connected to the water inlet and outlet 13. The outer locking block in this application refers to a locking block away from the middle of the filter element, and the inner locking block is a locking block only close to the middle of the filter element.

[0022] The connecting parts vary according to the different diameters and specifications of the membrane components. The connecting mechanisms of hollow fiber membrane components with the same diameter and specifications are universal.

[0023] After the filter element of the hollow fiber column membrane assembly of the present invention is installed with the connector, the upper and lower ends have the same structure, so the upper and lower ends can be used interchangeably. However, in general, the lower end of the hollow fiber column membrane is used as the inlet water tester, and the upper end is used as the concentrate water tester.

[0024] The diameter of the water outlet varies according to the size of the membrane component, and is generally designed to be in the range of 6mm-63mm. The distance between the center of the water outlet and the two end faces of the filter element also varies with the height of the sealing glue 3 at the inlet and outlet ends. Usually, the distance between the water outlet and the outer end faces of the inlet and outlet ends is 23mm-105mm.

[0025] Figure 3 It is shown that the upper and lower sides of the fixing block 22 are respectively threadedly connected to the outer locking block 21 and the inner locking block 23; preferably, the upper and lower sides of the fixing block are respectively provided with inner thread structures, and the outer locking block and the inner locking block are provided with corresponding outer thread structures.

[0026] The end of the outer locking block away from the fixed block is provided with a water inlet and outlet 25, usually the upper side is used as a concentrated water outlet, and the lower side is used as a water inlet connected to the external interface.

[0027] The fixed block 22 is provided with a water production channel 24 which is in communication with the water production port 14 .

[0028] A sealing ring 26 is provided between the fixing block 22 and the outer locking block 21 and the inner locking block 23 .

[0029] The water inlet and outlet are provided with water inlet and outlet sealing glue; the membrane bundle is fixed in the water inlet and outlet sealing glue; the port of the membrane bundle is exposed on the outer end surface of the water inlet and outlet sealing glue. The water inlet and outlet sealing glue is encapsulated and poured with thermosetting flexible epoxy resin, which can be completed by one-time pouring and encapsulation;

[0030] The present invention also includes a method for using the quick-release hollow fiber membrane assembly, comprising the following steps: 1) inserting an inner locking block, a sealing ring, a fixed block, a sealing ring, and an outer locking block into the two ends of the filter element in a symmetrical manner at both ends and pressing them into place; 2) rotating the outer locking block and the inner locking block clockwise and counterclockwise respectively, and when the outer locking block and the inner locking block are locked, the sealing ring in the fixed block is squeezed and deformed to achieve sealing; 3) when replacing, rotate the outer locking block and the inner locking block in the opposite direction to loosen the outer locking block and the inner locking block, remove the fixed block and replace the filter element.

[0031] To sum up, after the filter element of the quick-detachable hollow fiber membrane assembly of the present invention reaches the end of its service life, there is no need to replace the entire membrane, only the filter element part needs to be replaced, thereby achieving a reduction in the number of scrapped membrane assemblies; and its structure is simple, and compared with the traditional hollow fiber membrane assembly structure, the design of the end barrel accessories is omitted, so the production cost and the early mold development of plastic accessories are reduced to varying degrees; since there is no design of the end barrel accessories, the inlet and outlet water sealants are directly cast and packaged in the outer shell, so compared with the production of traditional hollow fiber column membrane assemblies, the bonding process of the end barrel and the outer shell and the sealing detection process are omitted; the production cycle of the hollow fiber column membrane assembly is shortened, and the production efficiency of the hollow fiber column membrane assembly is improved; and the filter element is directly exposed to the outside, achieving the goal of rapid replacement and rapid production.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A quick-release hollow fiber membrane assembly, characterized in that: It includes a filter element and a connecting piece; the filter element includes an outer shell, a membrane fiber bundle arranged in the outer shell, water inlet and outlet ends arranged at both ends of the membrane fiber bundle, and a plurality of water outlets arranged on the outer shell; the connecting piece includes an outer locking block, a fixing block and an inner locking block connected in sequence; the connecting piece is connected to the water inlet and outlet ends.

2. The quick-release hollow fiber membrane assembly according to claim 1, characterized in that: The diameter of the water outlet is 6mm-63mm; the distance between the water outlet and the outer end surface of the water inlet and outlet is 23mm-105mm.

3. The quick-release hollow fiber membrane assembly according to claim 1, characterized in that: The upper and lower sides of the fixing block are respectively threadedly connected to the outer locking block and the inner locking block; preferably, the upper and lower sides of the fixing block are respectively provided with inner thread structures, and the outer locking block and the inner locking block are provided with corresponding outer thread structures.

4. The quick-release hollow fiber membrane assembly according to claim 1, characterized in that: One end of the outer locking block away from the fixing block is provided with a water inlet and outlet.

5. The quick-release hollow fiber membrane assembly according to claim 1, characterized in that: The fixed block is provided with a water production channel which is communicated with the water production port.

6. The quick-release hollow fiber membrane assembly according to claim 1, characterized in that: A sealing ring is arranged between the fixing block, the outer locking block and the inner locking block.

7. The quick-release hollow fiber membrane assembly according to claim 1, characterized in that: The water inlet and outlet are provided with water inlet and outlet sealing glue; the membrane bundle is fixed in the water inlet and outlet sealing glue; the port of the membrane bundle is exposed on the outer end surface of the water inlet and outlet sealing glue.

8. A method for using the quick-release hollow fiber membrane assembly according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: 1) inserting the inner locking block, the sealing ring, the fixed block, the sealing ring and the outer locking block into the two ends of the filter element in a symmetrical manner at both ends and pressing them into place; 2) rotating the outer locking block and the inner locking block clockwise and counterclockwise respectively, and when the outer locking block and the inner locking block are locked, the sealing ring in the fixed block is squeezed and deformed to achieve sealing; 3) when removing and replacing, the outer locking block and the inner locking block are rotated in the opposite direction to loosen them, and the fixed block is removed to replace the filter element.

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