Acid-resistant ultrafiltration membrane element

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By introducing fastening mechanisms and sealing components into the acid-resistant ultrafiltration membrane element, the problems of loosening and leakage caused by threaded connections are solved, achieving stable connection and sealing in acidic environments and ensuring the safety and reliability of the equipment.

CN223464670UActive Publication Date: 2025-10-24ANDE MEMBRANE SEPARATION TECH ENG (BEIJING) CO LTD

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Patent Information

Application Number: CN202520106748.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-01-16
Publication Date: 2025-10-24
Estimated Expiration: 2035-01-16

AI Technical Summary

Technical Problem

Existing acid-resistant ultrafiltration membrane elements are prone to loosening of the connecting pipes due to vibration and pressure fluctuations caused by the threaded fastening method during operation, which can lead to liquid leakage, posing a safety hazard, especially in the chemical industry.

Method used

The design employs a combination of fastening mechanism and sealing components, including a rotating ring, limiting element, sealing element, and positioning pin. The fastener is stably locked by rotating the rotating plate and fixing rod, and the sealing effect is improved by the compression of the inclined sealing element with the connecting pipe, thus preventing liquid leakage.

Benefits of technology

It effectively prevents fasteners from loosening due to vibration and pressure fluctuations, improves the stability and sealing of the device, avoids leakage of corrosive media, and ensures the safety and reliability of the equipment.

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Abstract

The utility model relates to the field of ultrafiltration membrane elements, and discloses an acid-resistant ultrafiltration membrane element which comprises an element body, a connecting piece is fixedly connected to the upper portion of the element body, a fastener is in threaded connection with the upper portion of the connecting piece, a connecting pipe is inserted into the inner wall of the upper portion of the connecting piece, the inner side of the fastener is attached to the outer side of the connecting pipe, and a fastening mechanism is arranged on the outer side of the connecting piece. The fastening mechanism comprises a fixing assembly and a limiting assembly, the fixing assembly comprises a rotating ring, the rotating ring is rotationally connected to the outer side of the connecting piece, bases are fixedly connected to the left side and the right side of the rotating ring, and a first rotating plate is rotationally connected to the outer side of the base on the left side. According to the utility model, through the cooperative use of the fastening mechanism and the fastening piece, when the element body works, the fastening piece is locked through the fastening mechanism, so that the fastening piece is prevented from being loosened due to vibration generated when the element body works, the stability of the device is improved, and liquid leakage is effectively prevented.

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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ultrafiltration membrane element, especially to an acid-proof ultrafiltration membrane element. BACKGROUND

[0002] The acid-proof ultrafiltration membrane element is a core component for the ultrafiltration process, and the ultrafiltration is a membrane separation technology, which separates the macromolecular substances, colloids, bacteria and other impurities in the solution from the small molecular solutes and solvents by using the screening effect of the ultrafiltration membrane with the driving force of pressure difference.

[0003] The acid-proof ultrafiltration membrane element can maintain stable performance in an acidic environment, effectively prevent the membrane material from being corroded by acid, and thus ensure the normal operation of the ultrafiltration process.

[0004] During the working process of the ultrafiltration membrane element, the connection pipe is usually connected by screw fastening, and the vibration and pressure fluctuation generated during the working process can easily cause the connection pipe to loosen, resulting in liquid leakage and other problems. Once leakage occurs, not only the material will be lost, but also safety hazards may be caused, such as the leakage of acidic medium in the chemical industry, which may cause serious harm to the operators and the surrounding environment. Therefore, the acid-proof ultrafiltration membrane element is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the above shortcomings, the acid-proof ultrafiltration membrane element is provided to improve the problem of "usually using screw fastening connection, vibration, pressure fluctuation and other factors generated during the working process, which can easily cause the connection pipe to loosen, resulting in liquid leakage and other problems" in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: an acid-proof ultrafiltration membrane element, comprising an element body, a connecting piece is fixedly connected to the upper part of the element body, a fastener is threadedly connected to the upper part of the connecting piece, a connecting pipe is inserted into the inner wall of the upper part of the connecting piece, the inner side of the fastener is attached to the outer side of the connecting pipe, a fastening mechanism is arranged on the outer side of the connecting piece, the fastening mechanism comprises a fixed assembly and a limiting assembly, the fixed assembly comprises a rotating ring, the rotating ring is rotatably connected to the outer side of the connecting piece, a base is fixedly connected to the left and right sides of the rotating ring, a rotating plate one is rotatably connected to the outer side of the base on the left side, a rotating plate two is rotatably connected to the outer side of the base on the right side, a fixed rod is rotatably connected to the upper part of the rotating plate two, and a limiting hole is formed in the left side of the fixed rod.

[0007] Further description of the above technical scheme:

[0008] The limiting component includes limiting pieces, the limiting pieces are slidingly connected on the inner wall of the upper part of the second rotating plate, the limiting pieces are provided with two groups, the opposite sides of the two groups of limiting pieces are elastically connected with compression springs, and the outer sides of the limiting pieces are inserted into the inner walls of the limiting holes.

[0009] As further description of the above technical solution:

[0010] The lower part of the connecting pipe is provided with a sealing gasket.

[0011] As further description of the above technical solution:

[0012] The limiting piece is provided in L shape.

[0013] As further description of the above technical solution:

[0014] The fixing rods are provided with two groups, the fixing rods are respectively rotationally connected on the front and rear sides of the second rotating plate, and the lower sides of the fixing rods are attached to the upper sides of the fasteners.

[0015] As further description of the above technical solution:

[0016] The upper part of the connecting piece is provided with a sealing assembly, the sealing assembly includes a sealing piece, the lower part of the sealing piece is inserted into the inner side of the connecting piece, the inner side of the sealing piece is attached to the outer side of the lower part of the connecting pipe, and the lower side of the periphery of the upper part of the sealing piece is fixedly connected with a positioning pin.

[0017] As further description of the above technical solution:

[0018] The top end of the connecting piece is provided with a slot, and the positioning pin is inserted into the inner wall of the slot.

[0019] As further description of the above technical solution:

[0020] The positioning pin and the slot are provided with multiple groups, the positioning pins and the slots are provided around the center point of the connecting piece as the center, and the inner side of the sealing piece is provided in an inclined manner.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1、The utility model discloses, through the cooperation of fastening mechanism and fastener, when the element body works, fastening mechanism is locked fastener, thereby preventing the vibration produced when the element body works from loosening fastener, thereby improve the stability of device, effectively prevent liquid leakage.

[0023] 2. In the present invention, the sealing member arranged obliquely on the inner wall is squeezed and deformed with the outer side of the connecting pipe, and the sealing gasket on the connecting pipe is squeezed with it, thereby improving the sealing effect and strictly limiting the corrosive medium inside the pipe, avoiding the problem of corrosive medium leaking out and causing damage to the device due to loose sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0025] Figure 2 This is a schematic diagram of the split three-dimensional structure of the fastening mechanism in the present utility model;

[0026] Figure 3 This is a front-view three-dimensional structural cross-sectional diagram of the sealing member of the present invention;

[0027] Figure 4 This is a top view of the three-dimensional cross-sectional structure of the transfer plate 1 of the present invention.

[0028] Legend:

[0029] 1. Component body; 2. Connector; 3. Fastener; 4. Connecting pipe; 41. Base; 42. Turntable 1; 43. Turntable 2; 44. Fixing rod; 45. Limiting hole; 46. Rotating circle; 51. Limiting piece; 52. Compression spring; 61. Seal; 62. Positioning pin; 63. Slot. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Reference Figure 1 - Figure 3 The utility model provides an embodiment of an acid-resistant ultrafiltration membrane element, comprising an element body 1, which accommodates and supports the ultrafiltration membrane assembly, provides a stable physical structure for the ultrafiltration process, so that the ultrafiltration membrane can effectively perform substance separation work inside it, and is made of acid-resistant material. The upper part of the element body 1 is fixedly connected with a connector 2 for connecting the connecting pipe 4, which serves as a support point for the fastener 3 and can be tightened and fixed to the connecting pipe 4 by thread, and is made of acid-resistant material. The upper part of the connector 2 is threadedly connected with a fastener 3, and an anti-slip groove is provided on the outside. The connecting pipe 4 is fixed by tightening the fastener 3. The upper inner wall of the connector 2 is plugged with a connecting pipe 4 for conveying the liquid to be filtered, and is made of acid-resistant material. The inner side of the fastener 3 is attached to the outer side of the connecting pipe 4, and a fastening mechanism is provided on the outside of the connector 2. The fastening mechanism includes a fixing component and a limit component. The fixing component includes a rotating circle 46, which enables the fastening mechanism to rotate an angle, and the rotating circle 46 is rotatably connected to the outside of the connector 2.

[0032] Further, the left and right sides of the rotating ring 46 are fixedly connected with the base 41. A group of bases 41 on the left side are rotatably connected with the rotating plate one 42 outside, used for installing the limiting assembly and capable of rotating around the base 41. A group of bases 41 on the right side are rotatably connected with the rotating plate two 43 outside, used for installing the fixing rod 44. By rotating the rotating plate two 43, the fixing rod 44 can be driven to move up and down, so that the lower side of the fixing rod 44 is attached to or separated from the fastener 3, thereby realizing the fastening or loosening operation of the fastener 3. The upper part of the rotating plate two 43 is rotatably connected with the fixing rod 44. The left side of the fixing rod 44 is provided with a limiting hole 45, which can cooperate with the limiting piece 51 to fix the fixing rod 44, thereby limiting the upper side of the fastener 3 to prevent the fastener 3 from loosening, thereby improving the stability of the device.

[0033] Referring to Figure 2 and Figure 4 , the limiting assembly comprises a limiting piece 51 which is slidably connected to the inner wall of the upper part of the rotating plate one 42. The limiting piece 51 is provided with two groups. Under the action of the compression spring 52, the outer side of the limiting piece 51 can be inserted into the inner wall of the limiting hole 45 of the fixing rod 44, thereby limiting the movement of the fixing rod 44 to ensure that the fixing rod 44 remains stable in the fastening state and prevents the fastener 3 from loosening due to external forces and other factors, thereby ensuring the connection reliability between the connecting pipe 4 and the connecting piece 2. The opposite sides of the two groups of limiting pieces 51 are elastically connected with the compression spring 52.

[0034] Further, the outer side of the limiting piece 51 is inserted into the inner wall of the limiting hole 45 and connected to the opposite sides of the two groups of limiting pieces 51 to provide elastic force for the limiting piece 51, so that it can always maintain a pushing force in the direction of the fixing rod 44, ensuring that the limiting piece 51 can be tightly inserted into the limiting hole 45 to realize reliable limiting function. The lower part of the connecting pipe 4 is provided with a sealing gasket which cooperates with the sealing piece 61 to increase the sealing property between the connecting pipe 4 and the connecting piece 2. The limiting piece 51 is provided in an L shape to facilitate the operator to pull the limiting piece 51. The fixing rod 44 is provided with two groups, and the two groups of fixing rods 44 are rotatably connected to the front and rear sides of the rotating plate two 43. The lower side of the fixing rod 44 is attached to the upper side of the fastener 3 to prevent the vibration generated during the operation of the element body 1 from loosening the fastener 3, thereby improving the stability of the device and preventing the leakage of acidic liquid.

[0035] Referring to Figure 2 and Figure 3The upper part of the connecting piece 2 is provided with a sealing assembly, which comprises a sealing piece 61, the lower part of the sealing piece 61 is inserted into the inner side of the connecting piece 2, and the inner side of the sealing piece 61 is attached to the outer side of the lower part of the connecting pipe 4, which can effectively prevent fluid leakage at the connection between the connecting pipe 4 and the connecting piece 2, and ensure the sealing performance of the ultrafiltration membrane element. The inner side of the sealing piece 61 is inclined, which helps to better adapt to the shape of the connecting pipe 4, improves the sealing performance, strictly limits the corrosive medium inside the pipeline, avoids the problem of damage to the device caused by leakage of corrosive medium due to poor sealing, and the lower side of the outer periphery of the upper part of the sealing piece 61 is fixedly connected with a positioning pin 62, which cooperates with the insertion slot 63 at the top end of the connecting piece 2 to play a role in positioning the sealing piece 61, ensuring that the installation position of the sealing piece 61 in the connecting piece 2 is accurate and fixed, preventing displacement of the sealing piece 61 during operation, thereby ensuring the stability and reliability of the sealing effect

[0036] Further, the top end of the connecting piece 2 is provided with an insertion slot 63, and the positioning pin 62 is inserted into the inner wall of the insertion slot 63. The positioning pin 62 and the insertion slot 63 are provided in multiple groups, and the multiple groups of positioning pins 62 and insertion slots 63 are arranged around the center point of the connecting piece 2. The insertion slot 63 corresponds to the positioning pin 62 one by one to provide an insertion position for the positioning pin 62. Through the close cooperation with the positioning pin 62, the sealing piece 61 is accurately fixed on the upper part of the connecting piece 2, so that the sealing piece 61 can play a good sealing role in the correct position.

[0037] Working principle: in use, first, the lower part of the sealing piece 61 is inserted into the inner side of the connecting piece 2, so that the multiple groups of positioning pins 62 on the sealing piece 61 are inserted into the inner wall of the insertion slot 63 at the top end of the connecting piece 2, and then the connecting pipe 4 is inserted into the inner wall of the sealing piece 61, and the inclined surface of the inner wall of the sealing piece 61 is extruded by the connecting pipe 4, thereby ensuring the stability and reliability of the sealing effect, strictly limiting the corrosive medium inside the pipeline, avoiding the problem of damage to the device caused by leakage of corrosive medium due to poor sealing.

[0038] Then the fastener 3 is screwed on the upper part of the connecting piece 2. When the fastener 3 is tightened, its inner side is tightly attached to the outer side of the connecting pipe 4, and the connecting pipe 4 is firmly fixed in the connecting piece 2 by the fastening force of the thread.

[0039] At this time, rotating the rotating plate 43, the upper part of the fixed rod 44 connected with it rotates up and down, and rotating the two groups of fixed rods 44, the lower side of the two groups of fixed rods 44 is attached to the upper side of the fastener 3, and rotating the rotating plate 42, pulling the limiting part 51, the limiting part 51 on the fixed rod 44 is aligned with the limiting hole 45 on the two groups of fixed rods 44, and then releasing the limiting part 51, the limiting part 51 is inserted into the inner wall of the limiting hole 45 under the action of the compression spring 52, limiting the movement of the fixed rod 44, thereby limiting the upper side of the fastener 3, preventing the fastener 3 from loosening due to the vibration of the element body 1 during work.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. An acid-resistant ultrafiltration membrane element comprising an element body (1), characterized in that: The element body (1) upper fixedly connected with connecting piece (2), the connecting piece (2) upper threadedly connected with fastener (3), the connecting piece (2) upper inner wall inserts the connecting pipe (4), the fastener (3) inside adheres to the connecting pipe (4) outside, the connecting piece (2) outside is provided with fastening mechanism, the fastening mechanism includes fixed assembly and limiting assembly, the fixed assembly includes the circle (46), the circle (46) rotationally connected in the connecting piece (2) outside, the circle (46) left and right sides are fixedly connected with the base (41), left side a group the base (41) outside rotationally connected with the turnplate one (42), right side a group the base (41) outside rotationally connected with the turnplate two (43), the turnplate two (43) upper rotationally connected with the fixed rod (44), the fixed rod (44) left side is provided with the limiting hole (45).

2. The acid-resistant ultrafiltration membrane element according to claim 1, characterized in that: The limiting assembly includes limiting piece (51), the limiting piece (51) is slidably connected on the upper inner wall of the turnplate one (42), the limiting piece (51) is provided with two groups, two groups the limiting piece (51) opposite side is elastically connected with compression spring (52), the limiting piece (51) outside inserts in the inner wall of limiting hole (45).

3. The acid-resistant ultrafiltration membrane element according to claim 1, characterized in that: The connecting pipe (4) lower part is provided with sealing pad.

4. The acid-resistant ultrafiltration membrane element according to claim 2, characterized in that: The limiting piece (51) is provided as L shape.

5. The acid-resistant ultrafiltration membrane element according to claim 1, characterized in that: The fixed rod (44) is provided with two groups, two groups the fixed rod (44) is rotationally connected in the turnplate two (43) front and back two sides respectively, the fixed rod (44) lower side adheres to the fastener (3) upper side.

6. The acid-resistant ultrafiltration membrane element according to claim 1, characterized in that: The connecting piece (2) upper is provided with sealing assembly, the sealing assembly includes sealing piece (61), the sealing piece (61) lower part inserts in the connecting piece (2) inside, the sealing piece (61) inside adheres to the connecting pipe (4) lower part outside, the sealing piece (61) upper periphery lower side is fixedly connected with the positioning pin (62).

7. The acid-resistant ultrafiltration membrane element according to claim 6, characterized in that: The connecting piece (2) top end is provided with the slot (63), the positioning pin (62) inserts in the inner wall of slot (63).

8. The acid-resistant ultrafiltration membrane element according to claim 7, characterized in that: The positioning pin (62) and slot (63) are provided with multiple groups, multiple groups the positioning pin (62) and slot (63) are provided around with the center point of connecting piece (2) as center, the sealing piece (61) inside is provided as inclined.