Quick replacement device for hollow fiber ultrafiltration membrane spinneret orifices

Abstract

The utility model relates to a hollow fiber ultrafiltration membrane spinneret orifice quick replacement device which comprises a spinneret plate and a spinneret, and the spinneret is provided with a feed liquid cavity and a core liquid cavity which penetrate through the inner side and the outer side; the outlet of the feed liquid cavity sprays feed liquid out; an outlet of the core liquid cavity is located in an outlet of the feed liquid cavity, and core liquid is sprayed out; the spinneret plate is provided with a feed liquid outlet and a core liquid outlet; an inlet of the feed liquid cavity is connected with the feed liquid outlet; an inlet of the feed liquid cavity is provided with a plurality of feed liquid holes which are uniformly distributed along the circumference; an inlet of the core liquid cavity is connected with the core liquid outlet; and the spinneret is detachably connected with the spinneret plate. The spinneret and the spinneret plate are detachably connected, so that when a single spinneret is abraded, blocked or damaged, the whole spinneret plate does not need to be disassembled, and only the damaged spinneret needs to be independently replaced; the maintenance process is simplified, the requirements of complex processes such as high-temperature welding and precise alignment calibration are avoided, the downtime is remarkably shortened, and the maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hollow fiber spinning device technical field, specifically a kind of hollow fiber ultrafiltration membrane spinneret hole quick replacement device. BACKGROUND

[0002] The existing hollow fiber spinning device is usually composed of a spinneret plate and a plurality of spinning heads fixedly welded thereon. The structure has the following defects in design:

[0003] Firstly, when a single spinning head is worn, blocked or accidentally damaged, the entire spinneret plate needs to be disassembled and returned to the factory for repair, and the damaged parts cannot be replaced individually, resulting in low maintenance efficiency. The disassembly and assembly process involves complex processes such as high-temperature welding and precise alignment and calibration, further increasing downtime and operation difficulty.

[0004] Secondly, the return-to-factory repair mode has significant drawbacks. On the one hand, the repair cycle is long, and the device needs to go through the processes of disassembly, transportation, queuing for repair, reinstallation and debugging, which seriously affects the continuous production process. On the other hand, the return-to-factory repair costs are high, including logistics costs, labor repair costs and potential equipment depreciation risks, which significantly increase the operating costs of enterprises.

[0005] Thirdly, the permanent fixed connection between the spinning head and the spinneret plate makes the device lack flexibility and scalability in long-term use, making it difficult to adapt to the production needs of different specifications of fibers, and also unable to optimize the overall performance through local upgrading. SUMMARY

[0006] To solve the technical problems in the background art, the utility model discloses a hollow fiber ultrafiltration membrane spinneret hole quick replacement device.

[0007] The utility model provides a kind of hollow fiber ultrafiltration membrane spinneret hole quick replacement device, including spinneret plate and spinning head, spinning head is provided with the liquid feed cavity and the core liquid cavity that penetrate inside and outside;

[0008] The outlet of the liquid feed cavity sprays the liquid feed out;

[0009] The outlet of the core liquid cavity is inside the outlet of the liquid feed cavity, and sprays the core liquid out;

[0010] The spinneret plate is provided with a liquid feed outlet and a core liquid outlet;

[0011] The inlet of the liquid feed cavity is connected to the liquid feed outlet;

[0012] The inlet of the liquid feed cavity is provided with a plurality of circumferentially uniformly distributed liquid feed holes;

[0013] The inlet of the core liquid cavity is connected to the core liquid outlet;

[0014] The spinning head is detachably connected to the spinneret plate.

[0015] The beneficial effects of the above arrangement are: 1. By realizing the detachable connection of the spinneret and the spinneret plate, when a single spinneret is worn, blocked or damaged, the entire spinneret plate does not need to be disassembled, and only the damaged spinneret needs to be replaced; this not only simplifies the maintenance process and avoids the need for complex processes such as high-temperature welding and precise alignment calibration, but also significantly shortens the downtime and improves the maintenance efficiency; 2. Since the entire spinning device does not need to be returned to the factory for repair, the steps of disassembly, transportation, queuing for repair and reinstallation and debugging are reduced, thereby greatly reducing the maintenance cycle and cost; 3. The detachable connection of the spinneret and the spinneret plate allows the enterprise to quickly replace different specifications of the spinneret according to production needs to adapt to the production requirements of different specifications of fibers; 4. Compared to the traditional inlet of the material liquid cavity arranged as an annular cavity structure, the material liquid can flow more uniformly into the material liquid cavity and uniformly out of the material liquid cavity, thereby making the sealing distribution of the hollow fiber more uniform.

[0016] The flow channels of the core liquid and the material liquid are as follows: the spinneret plate is provided with a notch, and a convex tube is arranged in the notch; the inner wall of the notch and the outer wall of the convex tube form the outlet of the cavity, which is the material liquid outlet; the outlet of the inner cavity of the convex tube is the core liquid outlet; the inlet of the core liquid cavity is located in the circular area formed by the material liquid hole and is connected with the convex tube.

[0017] To avoid the phenomenon of partial mixing of the core liquid and the material liquid when flowing out of the spinneret plate, a further design is that a ring-shaped sealing ring is clamped at the inlet of the core liquid cavity, and the end of the convex tube abuts against the sealing ring.

[0018] The traditional spinneret is integrally formed, the structure is complex, and the manufacturing cost is high. Based on this, a further improvement is that the spinneret is composed of an input block and an output block connected with each other; the material liquid hole is arranged on the input block and penetrates through both sides of the input block; the output block is provided with a material liquid temporary storage cavity covering the material liquid hole and a plug-in hole communicating with the material liquid temporary storage cavity; a spinneret needle is arranged in the input block, a part of the spinneret needle is fixedly connected with the input block, and the remaining part is plugged into the plug-in hole; the spinneret needle is coaxial with the plug-in hole and is spaced apart from the inner wall of the plug-in hole; the spinneret needle internally forms a core liquid cavity; the space between the material liquid hole, the material liquid temporary storage cavity and the outer wall of the spinneret needle and the inner wall of the plug-in hole collectively forms a material liquid cavity.

[0019] The connection position precision of the input block and the output block directly affects the consistency of the spacing between the spinneret needle and the plug-in hole wall and the consistency of the wall thickness of the hollow fiber. Based on this, a further improvement is that the input block is provided with an input positioning hole, and the output block is provided with an output positioning hole coaxial and the same diameter as the input positioning hole; a positioning pin is simultaneously plugged into the input positioning hole and the output positioning hole.

[0020] The outlet of the spinneret is hidden in the output block, and the material liquid is easy to spread to the spinneret when flowing out of the material liquid chamber, thereby affecting the quality of the hollow fiber; if the outlet of the spinneret protrudes from the output block, the spinneret is easy to be damaged due to collision, and based on this, the further improvement is that the output end of the spinneret is flush with the outer side of the output block.

[0021] The material liquid is mixed when flowing in the material liquid chamber, which is easy to affect the uniformity of the density distribution of the hollow fiber, and based on this, the further improvement is that the outlet of the material liquid temporary storage chamber and the inlet of the plug-in hole are connected through a wedge-shaped transition hole; the flared end of the transition hole is connected with the material liquid temporary storage chamber, and the constricted end is connected with the plug-in hole.

[0022] In order to avoid that the core liquid flows into the outer side area of the spinneret, the further design is that the inlet end of the spinneret is plugged into the sealing ring.

[0023] The utility model discloses the effective result is: 1, through realizing the detachable connection of spinneret and spinneret board, when single spinneret appears wear and tear, block or damage, need not to disassemble entire spinneret board, only needs to replace the damaged spinneret alone, this not only simplifies the maintenance process, avoids the demand of complex process such as high temperature welding and precision alignment calibration, also significantly shortens the downtime, improves the maintenance efficiency, 2, because need not to return factory maintenance to entire spinneret device, reduced equipment dismounting, transportation, queuing maintenance and reinstallation debugging etc. Link, thereby greatly reduced the maintenance cycle and cost, 3, the detachable connection of spinneret and spinneret board makes the enterprise can replace the spinneret of different specifications according to production demand, to adapt to the production requirement of different specifications fiber, 4, compared to the traditional material liquid chamber, the inlet of material liquid hole is set into the structure of annular chamber, and the material liquid can flow into the material liquid chamber more uniformly, and flow out from the material liquid chamber uniformly, so that the sealing distribution of the hollow fiber is more uniform. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model is further illustrated below in connection with the drawings and examples.

[0025] Figure 1 It is the structure schematic diagram of the utility model;

[0026] Figure 2 It is the structure schematic diagram of another view of the utility model;

[0027] Figure 3 It is the structure schematic diagram of the spinneret;

[0028] Figure 4 It is the front view of the spinneret;

[0029] Figure 5 It is Figure 4 The sectional view of A-A;

[0030] Figure 6 yes Figure 4 Sectional view of BB;

[0031] In the diagram: 1. Spinneret; 2. Spinneret head; 3. Feed chamber; 4. Core fluid chamber; 5. Feed outlet; 6. Core fluid outlet; 7. Feed hole; 8. Positioning pin; 9. Transition hole; 10. Sealing ring; 11. Input block; 12. Output block; 13. Feed storage chamber; 14. Insertion hole; 15. Spinneret needle; 16. Input positioning hole; 17. Output positioning hole; 18. Connecting hole; 19. Connecting bolt; 20. Mounting hole; 21. Limiting recess; 22. Feed connector; 23. Core fluid connector; 24. Eye bolt; 101. Front plate; 102. Middle plate; 103. Rear plate; 151. Input section; 152. Output section. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0033] like Figure 1 and Figure 2 As shown, this utility model discloses a quick-change device for the spinneret orifice of a hollow fiber ultrafiltration membrane, including a spinneret plate 1 and a spinneret head 2. The spinneret plate 1 is composed of a front plate 101, a middle plate 102, and a rear plate 103 connected in sequence and fixed by bolts. The spinneret plate 1 has independent feed liquid channels and core liquid channels, both of which penetrate the front plate 101, the middle plate 102, and the rear plate 103. The inlet of the feed liquid channel is located in the rear plate 103 and is connected to a feed liquid connector 22, through which the feed liquid enters the feed liquid channel. The inlet of the core liquid channel is also located in the rear plate 103 and is connected to a core liquid connector 23, through which the core liquid enters the core liquid channel.

[0034] The outlet of the liquid flow channel is liquid outlet 5, and the outlet of the core liquid flow channel is core liquid outlet 6. The specific structure is as follows: a recessed cylindrical notch is provided on the outer side of the front plate 101, and an axially extending convex tube is provided at the center of the notch; the inner wall of the notch and the outer wall of the convex tube constitute the outlet cavity of the liquid flow channel, and the outlet of this cavity is liquid outlet 5; the inner cavity of the convex tube constitutes the outlet cavity of the core liquid flow channel, and the outlet of this cavity is core liquid outlet 6.

[0035] Two symmetrically arranged eye bolts 24 are also installed on both sides of the rear plate 103 to facilitate the hoisting and transportation of this utility model.

[0036] The spinneret 2 is provided with two symmetrically arranged connecting holes 18. The connecting bolts 19 pass through the connecting holes 18 and are threaded to the front plate 101 to realize the detachable connection of the spinneret 2.

[0037] likeFigures 3-5 As shown, the spinneret 2 is composed of an input block 11 and an output block 12 connected with each other and fixed by bolt locking. The input block 11 is provided with a spinneret needle 15 composed of an input portion 151 and an output portion 152 connected with each other in sequence, and the diameter of the input portion 151 is larger than that of the output portion 152. The input block 11 is provided with a mounting hole 20, and the input portion 151 is inserted into the mounting hole 20 and fixed by welding. The output block 12 is further provided with a plurality of liquid holes 7 rotationally symmetrical with respect to the spinneret needle 15, and the outer side surface of the input block 11 is attached to the front plate 101, and the connection part is sealed by a mirror surface. The inlet end of the liquid hole 7 is connected and communicated with the liquid outlet 5, and the inlet end of the input portion 151 is connected and communicated with the core liquid outlet 6. The end surface of the input block 11 connected to the front plate 101 is further provided with a recessed limiting recess 21 coaxially communicated with the mounting hole 20, and an annular sealing ring 10 is clamped in the limiting recess 21, the end of the convex tube abuts against the sealing ring 10, and the inlet of the input portion 151 is inserted into the sealing ring 10 to achieve sealing and avoid the mixing of the core liquid and the liquid after flowing out of the spinneret plate 1.

[0038] The output block 12 is sequentially provided with a liquid temporary storage cavity 13, a transition hole 9 and an insertion hole 14 connected with each other in sequence. The inlet of the liquid temporary storage cavity 13 covers the liquid hole 7 and is communicated with the outlet of the liquid hole 7. The cross section of the transition hole 9 is wedge-shaped, the flared end of which is connected with the outlet end of the liquid temporary storage cavity 13, and the constricted end is connected with the inlet end of the insertion hole 14. The provision of the transition hole 9 enables the liquid in the liquid temporary storage cavity 13 to flow into the insertion hole 14 in a directional manner and avoids the mixing phenomenon. The diameter of the insertion hole 14 is larger than that of the input portion 151. When the output block 12 and the input block 11 are connected, the output portion 152 is coaxially inserted into the insertion hole 14, and a space is provided between the output portion 152 and the hole wall of the insertion hole 14. In this way, the inside of the spinneret needle 15 constitutes the core liquid cavity 4; and the liquid hole 7, the liquid temporary storage cavity 13, the transition hole 9 and the space between the outer wall of the spinneret needle 15 and the inner wall of the insertion hole 14 together constitute the liquid cavity 3.

[0039] The spinneret 2 is composed of the split input block 11 and the output block 12, which simplifies the structure of the spinneret 2 and reduces the manufacturing cost.

[0040] The output end of the spinneret needle 15 is flush with the outer side surface of the output block 12, and the reason for this design is that if the outlet of the spinneret needle 15 is hidden in the output block 12, the liquid flowing out of the liquid cavity 3 is easy to spread to the spinneret needle 15, thereby affecting the quality of the hollow fiber; if the outlet of the spinneret needle 15 protrudes from the output block 12, the spinneret needle 15 is easy to be damaged due to collision

[0041] The connection position precision of the input block 11 and the output block 12 directly affects the consistency of the space between the spinneret needle 15 and the hole wall of the insertion hole 14 and the consistency of the wall thickness of the hollow fiber, so if the connection position precision of the input block 11 and the output block 12 is not high, the space between the spinneret needle 15 and the hole wall of the insertion hole 14 will not be consistent, and the wall thickness of the hollow fiber will not be consistentFigure 6 As shown, the input block 11 is provided with an input positioning hole 16, and the output block 12 is provided with an output positioning hole 17 coaxial and same diameter with the input positioning hole 16; the positioning pin 7 is inserted into the input positioning hole 16 and the output positioning hole 17 at the same time.

[0042] Compared with the prior art, the advantages of the embodiment are: 1. By realizing the detachable connection of the spinneret 2 and the spinneret plate 1, when a single spinneret 2 is worn, blocked or damaged, the entire spinneret plate 1 does not need to be disassembled, and only the damaged spinneret 2 needs to be replaced; this not only simplifies the maintenance process and avoids the need for complex processes such as high-temperature welding and precise alignment calibration, but also significantly shortens the downtime and improves the maintenance efficiency; 2. Since the entire spinning device does not need to be returned to the factory for repair, the steps of equipment disassembly, transportation, queuing for repair and reinstallation and debugging are reduced, thereby greatly reducing the maintenance cycle and cost; 3. The detachable connection of the spinneret 2 and the spinneret plate 1 enables enterprises to quickly replace spinnerets 2 of different specifications according to production needs to adapt to the production requirements of different specifications of fibers; 4. Compared with the traditional structure of the inlet of the material liquid cavity 3 being set as an annular cavity, the material liquid hole 7 can make the material liquid flow into the material liquid cavity 3 more uniformly and flow out from the material liquid cavity 3 uniformly, thereby making the sealing distribution of the hollow fiber more uniform.

[0043] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of the claims.

Claims

1. A hollow fiber ultrafiltration membrane spinneret quick replacement device, comprising a spinneret plate (1) and a spinneret head (2), characterized in that: the spinneret head (2) is provided with a feed liquid cavity (3) and a core liquid cavity (4) penetrating through the inside and outside; the outlet of the feed liquid cavity (3) sprays feed liquid; the outlet of the core liquid cavity (4) is located inside the outlet of the feed liquid cavity (3) and sprays core liquid; the spinneret plate (1) is provided with a feed liquid outlet (5) and a core liquid outlet (6); the inlet of the feed liquid cavity (3) is connected with the feed liquid outlet (5); the inlet of the feed liquid cavity (3) is provided with a plurality of feed liquid holes (7) uniformly distributed in the circumference; the inlet of the core liquid cavity (4) is connected with the core liquid outlet (6); the spinneret head (2) is detachably connected with the spinneret plate (1). The spinneret plate (1) is provided with a notch, and a convex tube is arranged in the notch; the inner wall of the notch and the outer wall of the convex tube constitute the outlet of the cavity, which is the feed liquid outlet (5); the outlet of the inner cavity of the convex tube is the core liquid outlet (6); the inlet of the core liquid cavity (4) is located in the circular area formed by the feed liquid holes (7) and is connected with the convex tube. The inlet of the core liquid cavity (4) is clamped with a ring-shaped sealing ring (10), and the end of the convex tube abuts against the sealing ring (10). The spinneret head (2) is composed of an input block (11) and an output block (12) connected with each other; the feed liquid holes (7) are arranged on the input block (11) and penetrate through both sides of the input block (11); the output block (12) is provided with a feed liquid temporary storage cavity (13) covering the feed liquid holes (7) and a plug-in hole (14) in communication with the feed liquid temporary storage cavity (13); a spinneret needle (15) is arranged in the input block (11), and the spinneret needle (15) is fixedly connected with the input block (11) in part and is plugged into the plug-in hole (14) in the remaining part; the spinneret needle (15) is coaxial with the plug-in hole (14) and is spaced apart from the inner wall of the plug-in hole (14); the spinneret needle (15) internally constitutes the core liquid cavity (4); the space between the feed liquid holes (7), the feed liquid temporary storage cavity (13), the outer wall of the spinneret needle (15) and the inner wall of the plug-in hole (14) collectively constitutes the feed liquid cavity (3). The input block (11) is provided with an input positioning hole (16), and the output block (12) is provided with an output positioning hole (17) coaxial and the same diameter as the input positioning hole (16); a positioning pin (8) is simultaneously plugged into the input positioning hole (16) and the output positioning hole (17). The output end of the spinneret needle (15) is flush with the outer side surface of the output block (12). The outlet of the feed liquid temporary storage cavity (13) and the inlet of the plug-in hole (14) are connected through a wedge-shaped transition hole (9); the flared end of the transition hole (9) is connected with the feed liquid temporary storage cavity (13), and the constricted end is connected with the plug-in hole (14). The inlet end of the spinneret needle (15) is plugged into the sealing ring (10). ​ 2. The hollow fiber ultrafiltration membrane spinneret quick replacement device according to claim 1, characterized in that: ​ ​ ​ ​ 3. The hollow fiber ultrafiltration membrane spinneret quick replacement device according to claim 2, characterized in that: ​ 4. The hollow fiber ultrafiltration membrane spinneret quick replacement device according to claim 1, characterized in that: ​ ​ ​ ​ ​ ​ ​ 5. The hollow fiber ultrafiltration membrane spinneret quick replacement device according to claim 4, characterized in that: ​ ​ 6. The hollow fiber ultrafiltration membrane spinneret quick replacement device according to claim 4, characterized in that: ​ 7. The hollow fiber ultrafiltration membrane spinneret quick replacement device according to claim 4, characterized in that: ​ ​ 8. The hollow fiber ultrafiltration membrane spinneret quick replacement device according to claim 4, characterized in that: ​

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