Anti-leakage reverse osmosis membrane assembly

Abstract

The utility model discloses an anti-leakage reverse osmosis membrane assembly which comprises a membrane shell, a reverse osmosis membrane main body, a top cover and an expansion sealing device, according to the utility model, the expansion sealing device is arranged at the upper part of the surface of the reverse osmosis membrane main body, the reverse osmosis membrane main body is arranged in the membrane shell, and at the moment, the reverse osmosis membrane main body is attached to the inner wall surface of the membrane shell through the rubber sealing sleeve arranged on the surface to achieve primary sealing, and then the top cover is screwed and fixed at the top of the membrane shell in a threaded manner; the top cover can sleeve the expansion sleeve outside the reverse osmosis membrane main body, and along with downward screwing of the top cover, the expansion sleeve synchronously moves downwards and is longitudinally inserted into the inner side of the expansion cavity, and internal support and extrusion expansion effects are provided for the rubber sealing sleeve through the expansion sleeve, so that the rubber sealing sleeve is tightly attached to the inner wall surface of the membrane shell; therefore, the sealing effect is further enhanced, and the water mixing phenomenon caused by liquid permeation in the membrane shell is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to reverse osmosis membrane technical field, concretely is a kind of anti-leakage reverse osmosis membrane assembly. BACKGROUND

[0002] Reverse osmosis membrane is the core component of reverse osmosis technology, is a kind of artificial semi-permeable membrane that simulates biological semi-permeable membrane, and the membrane aperture of reverse osmosis membrane is very small, so that dissolved salts, colloids, microorganisms, organic matter etc.

[0003] The existing patent application number: 202121112667.2 reverse osmosis membrane assembly, filtering device, including: center tube, one end of the center tube has water outlet, the circumferential wall of the center tube is provided with water inlet hole, the water inlet hole is communicated with the water outlet;At least one winding layer, the winding layer is wound on the outer circumferential side of the center tube, the winding layer includes membrane, cloth, grid, the cloth is arranged on the reverse side of the membrane, the grid is arranged on the front side of the membrane, and the through slot is arranged on the grid.

[0004] The above patent details a kind of reverse osmosis membrane assembly, in actual use process, the surface of reverse osmosis membrane is usually provided with sealing ring, sealing ring is used to form sealing between reverse osmosis membrane and membrane shell, avoid unfiltered raw water directly into product water end, but due to the structure of reverse osmosis membrane sealing ring is single, only rely on the elasticity of itself and membrane shell inner wall surface fit to seal, the sealing effect is more general, in actual use process, it is easy to appear leakage phenomenon because of sealing problem, for this, we propose a kind of anti-leakage reverse osmosis membrane assembly to solve the above problems. Utility model content

[0005] The utility model is to provide a kind of anti-leakage reverse osmosis membrane assembly to solve the problems raised in the above background.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme: A kind of anti-leakage reverse osmosis membrane module, including membrane shell, reverse osmosis membrane main body, top cover and expansion sealing device, the reverse osmosis membrane main body is placed in the inside of membrane shell, the top of membrane shell is screw joint with top cover, top cover is in close contact with the top end of reverse osmosis membrane main body, expansion sealing device is arranged on the surface of reverse osmosis membrane main body upper portion, expansion sealing device includes rubber seal sleeve, sealing tape, expansion cavity, annular sliding groove, connecting ring frame, support and expansion sleeve, rubber seal sleeve is connected with the surface of reverse osmosis membrane main body and is installed by sleeve joint on the surface of reverse osmosis membrane main body, and rubber seal sleeve is attached to the inner wall of membrane shell, sealing tape is arranged on the bottom opening of rubber seal sleeve, expansion cavity is arranged in the middle of the inner side of rubber seal sleeve upper portion, the inner diameter of expansion cavity is greater than the outer diameter of reverse osmosis membrane main body, annular sliding groove is arranged in the bottom surface of top cover, connecting ring frame is arranged on the bottom of top cover, connecting ring frame is slidably connected with the inner side of annular sliding groove by top rail, so that connecting ring frame is rotatably connected with top cover, support is symmetrically installed on the left and right sides of the bottom of connecting ring frame, and support is fixedly connected with expansion sleeve, and top cover is movably sleeved on the outside of reverse osmosis membrane main body by expansion sleeve, expansion sleeve is longitudinally inserted with the inner side of expansion cavity.

[0007] Preferably, the overall length of the rubber seal sleeve is greater than or equal to 15 mm.

[0008] Preferably, the connection between the connecting ring frame and the support is connected by a stainless steel screw.

[0009] Preferably, the connecting ring frame, the support and the expansion sleeve are made of food-grade polypropylene material.

[0010] Preferably, the surface of the expansion sleeve and the inner wall of the expansion cavity are smooth and free of burrs.

[0011] Preferably, the surface of the expansion sleeve is provided with a tapered portion at the bottom end.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses an expansion sealing device arranged on the surface of the reverse osmosis membrane main body, the reverse osmosis membrane main body is placed in the inside of the membrane shell, at this time, the rubber seal sleeve arranged on the surface of the reverse osmosis membrane main body is attached to the inner wall of the membrane shell, achieving preliminary sealing, then the top cover is screwed on the top of the membrane shell, in this process, the top cover will sleeve the expansion sleeve on the outside of the reverse osmosis membrane main body, and as the top cover is tightened downward, the expansion sleeve will also move downward synchronously and longitudinally insert with the inner side of the expansion cavity, the expansion sleeve provides internal support and extrusion expansion effect for the rubber seal sleeve, so that the rubber seal sleeve is tightly attached to the inner wall of the membrane shell, thereby further reinforcing the sealing effect and effectively preventing the liquid in the membrane shell from penetrating and causing water leakage. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic view of the utility model;

[0015] Figure 2 It is the structure schematic view of the reverse osmosis membrane main body in the utility model;

[0016] Figure 3 It is the front view sectional structure schematic view of the rubber sealing sleeve in the utility model;

[0017] Figure 4 It is the structure schematic view of the top cover in the utility model;

[0018] Figure 5 It is the bottom view structure schematic view of the top cover in the utility model;

[0019] Figure 6 It is the front view sectional structure schematic view of the expansion sleeve in the utility model.

[0020] In the drawing: membrane shell-1, reverse osmosis membrane main body-2, top cover-3, expansion sealing device-4, rubber sealing sleeve-41, sealing adhesive tape-42, expansion cavity-43, annular chute-44, connecting ring frame-45, support-46, expansion sleeve-47, cone-47a. Specific implementation

[0021] In order to further explain the technical scheme of the utility model, the following is elaborated in detail through specific embodiment.

[0022] Please refer to Figure 1 The utility model provides a kind of anti-leakage reverse osmosis membrane assembly, including membrane shell 1, reverse osmosis membrane main body 2, top cover 3 and expansion sealing device 4, reverse osmosis membrane main body 2 is placed in membrane shell 1 inside, top cover 3 is screwed and is connected in the top of membrane shell 1, top cover 3 and reverse osmosis membrane main body 2 top end are in close contact, and expansion sealing device 4 is set on the surface upper portion of reverse osmosis membrane main body 2.

[0023] Please refer to Figures 2-6The utility model provides a kind of anti-leakage reverse osmosis membrane assembly, expansion sealing device 4 includes rubber seal sleeve 41, sealing tape 42, expansion cavity 43, annular chute 44, connecting ring stand 45, support 46 and expansion sleeve 47, rubber seal sleeve 41 is connected on the surface upper portion of reverse osmosis membrane main part 2, rubber seal sleeve 41 is installed by bottom opening with the surface of reverse osmosis membrane main part 2, and rubber seal sleeve 41 is attached with membrane shell 1 inner wall, rubber seal sleeve 41 bottom opening is wound and pasted with sealing tape 42, rubber seal sleeve 41 is pasted and sealed with the surface of reverse osmosis membrane main part 2 by sealing tape 42, and rubber seal sleeve 41 position is fixed, rubber seal sleeve 41 inside middle upper portion is provided with expansion cavity 43, the inside diameter of expansion cavity 43 is greater than the outer diameter of reverse osmosis membrane main part 2, annular chute 44 is centrally arranged on the bottom surface of top cover 3, connecting ring stand 45 is provided on the bottom of top cover 3, connecting ring stand 45 is slidably connected with the inside of annular chute 44 by top guide rail, so that connecting ring stand 45 is rotatably connected with top cover 3, so that expansion sleeve 47 does not rotate synchronously with top cover 3, so that expansion sleeve 47 and expansion cavity 43 are more smooth, support 46 is symmetrically installed on the left and right sides of the bottom of connecting ring stand 45, and the bottom end of support 46 is connected and fixed with expansion sleeve 47, top cover 3 is movably sleeved on the outside of reverse osmosis membrane main part 2 by expansion sleeve 47, and expansion sleeve 47 is longitudinally inserted with the inside of expansion cavity 43.

[0024] When installing, first, reverse osmosis membrane main part 2 is placed into the inside of membrane shell 1, at this time, reverse osmosis membrane main part 2 is attached with the inner wall of membrane shell 1 by the rubber seal sleeve 41 arranged on the surface, achieving preliminary sealing, then top cover 3 is screwed on the top of membrane shell 1, in this process, top cover 3 will sleeve expansion sleeve 47 on the outside of reverse osmosis membrane main part 2, and as top cover 3 is screwed down, expansion sleeve 47 will also move down synchronously and longitudinally insert with the inside of expansion cavity 43, expansion sleeve 47 provides internal support and extrusion expansion effect for rubber seal sleeve 41, so that rubber seal sleeve 41 is closely attached to the inner wall of membrane shell 1, thereby further reinforcing the sealing effect, effectively preventing the phenomenon of water leakage caused by liquid penetration in the inside of membrane shell 1.

[0025] Further explanation, the overall length of rubber seal sleeve 41 is greater than or equal to 15 mm, the contact area of rubber seal sleeve 41 and the inner wall of membrane shell 1 is increased, and the sealing performance is improved.

[0026] Further explanation, the connection between connecting ring stand 45 and support 46 adopts stainless steel screw connection, expansion sleeve 47 is a detachable structure, which can be disassembled and replaced when damaged, effectively controlling the replacement cost.

[0027] Further explanation, connecting ring stand 45, support 46 and expansion sleeve 47 are made of food-grade polypropylene material, which does not affect the output water quality of reverse osmosis membrane main part 2.

[0028] Further, the surface of the expansion sleeve 47 and the inner wall of the expansion cavity 43 are smooth without burrs, so that the expansion sleeve 47 and the expansion cavity 43 are smoothly inserted and are not easily blocked.

[0029] Further, the surface of the expansion sleeve 47 and the inner wall of the expansion cavity 43 are smooth without burrs, so that the expansion sleeve 47 and the expansion cavity 43 are smoothly inserted and are not easily blocked.

[0030] The above is only the preferred example of the present application and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, the skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A leakage-proof reverse osmosis membrane assembly, comprising a membrane shell (1), a reverse osmosis membrane body (2) and a top cover (3), the reverse osmosis membrane body (2) is arranged inside the membrane shell (1), the top cover (3) is threadedly connected to the top of the membrane shell (1), and the top cover (3) is in close contact with the top end of the reverse osmosis membrane body (2); characterized in that It also includes an expansion sealing device (4), the expansion sealing device (4) is arranged on the upper surface of the reverse osmosis membrane body (2), the expansion sealing device (4) comprises a rubber sealing sleeve (41), a sealing tape (42), an expansion cavity (43), an annular sliding groove (44), a connecting ring frame (45), a support (46) and an expansion sleeve (47), the rubber sealing sleeve (41) is sleeved on the upper surface of the reverse osmosis membrane body (2), the rubber sealing sleeve (41) is installed on the surface of the reverse osmosis membrane body (2) through the bottom opening, and the rubber sealing sleeve (41) is in close contact with the inner wall of the membrane shell (1), the sealing tape (42) is wound and pasted on the bottom opening of the rubber sealing sleeve (41), the expansion cavity (43) is arranged on the inner side of the rubber sealing sleeve (41), the inner diameter of the expansion cavity (43) is greater than the outer diameter of the reverse osmosis membrane body (2), the annular sliding groove (44) is arranged on the bottom surface of the top cover (3), the connecting ring frame (45) is arranged on the bottom of the top cover (3), the connecting ring frame (45) is slidably connected with the inner side of the annular sliding groove (44) through the top guide rail, so that the connecting ring frame (45) is rotatably connected with the top cover (3), the supports (46) are symmetrically arranged on the left and right sides of the bottom of the connecting ring frame (45), the supports (46) are connected and fixed with the expansion sleeve (47), the top cover (3) is movably sleeved on the outside of the reverse osmosis membrane body (2) through the expansion sleeve (47), and the expansion sleeve (47) is longitudinally inserted into the inner side of the expansion cavity (43).

2. The leakage resistant reverse osmosis membrane module of claim 1, wherein: The overall length of the rubber sealing sleeve (41) is greater than or equal to 15 mm.

3. The leakage resistant reverse osmosis membrane module of claim 1, wherein: The connecting part of the connecting ring frame (45) and the support (46) is connected by a stainless steel screw.

4. The leakage resistant reverse osmosis membrane module of claim 1, wherein: The connecting ring frame (45), the support (46) and the expansion sleeve (47) are made of food-grade polypropylene material.

5. The leakage resistant reverse osmosis membrane module of claim 1, wherein: The surface of the expansion sleeve (47) and the inner wall of the expansion cavity (43) are smooth and free of burrs.

6. The leakage resistant reverse osmosis membrane module of claim 1, wherein: A tapered portion (47a) is arranged on the bottom end of the surface of the expansion sleeve (47).

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