Modular, easy-to-disassemble hollow fiber membrane spinneret

Abstract

The utility model discloses a modularization easily detachable hollow fiber membrane spinneret relates to spinneret technical field, including the axial base ring for supporting the spinneret base plate, and the spinneret base plate includes the end to the axial convex part of integrated molding, and the end to the axial convex part is connected with the abutment between the axial base ring, is equipped with the axial fixed internal pressure mechanism for the clamping fixed end to the axial convex part on the axial base ring, and the axial fixed internal pressure mechanism includes the multiple sets of homoplasmy holder of setting on the axial base ring, and the side surface of multiple sets of homoplasmy holder to the end to the axial convex part all is equipped with a set of resistance seat, and the resistance seat includes the integrated molding of transverse lower stretch part and longitudinal top stretch part, the utility model discloses a set up axial fixed internal pressure mechanism, utilizes the double clamping effect of resistance seat, can fast fixed spinneret base plate on the axial base ring, realizes the quick installation of spinneret, simultaneously, effectively avoided the looseness or displacement of spinneret in the use process because of vibration, pressure change and other factors, ensured the stability of spinning process.

Description

Technical Field

[0001] This utility model relates to the field of spinneret technology, specifically a modular, easily detachable hollow fiber membrane spinneret. Background Technology

[0002] The spinneret is a key component in hollow fiber membrane spinning equipment. It is used to expel polymer melt or solution through spinneret holes to form the nascent fibers of the hollow fiber membrane. The structure and performance of the spinneret directly affect the fiber forming quality, uniformity and production efficiency.

[0003] When installing existing spinnerets, bolts or clips are usually used. Bolt fixing usually requires anchoring at multiple locations to ensure the stability of the spinneret. Although this multi-point anchoring method can provide high connection strength, the installation and removal process is cumbersome, requiring each bolt to be tightened or loosened, which increases the time cost and labor intensity of equipment installation and maintenance.

[0004] While the slot and block fixing method enables quick assembly and disassembly, significantly improving equipment maintenance efficiency, it suffers from stability issues during long-term use. Due to the difficulty in achieving an interference fit between the slot and block, even if they fit tightly during initial installation, micro-gaps can easily form between them during long-term spinning due to the complex working conditions such as high temperature, high pressure, and mechanical vibration. The presence of these micro-gaps can compromise the overall stability of the spinneret, leading to localized stress concentration or slight displacement of the spinneret holes during spinning, which may in turn cause defects in the fiber forming process, such as fiber breakage, voids, and uneven surfaces. Therefore, a modular, easily detachable hollow fiber membrane spinneret is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a modular, easily detachable hollow fiber membrane spinneret, which has the advantages of enabling quick assembly and disassembly of the spinneret while ensuring the stability of the spinneret process, thus solving the problems of cumbersome assembly and disassembly and difficulty in guaranteeing spinneret stability.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modular and easily detachable hollow fiber membrane spinneret, comprising a axial base ring for supporting the spinneret substrate, wherein the spinneret substrate comprises an integrally formed end-axis protrusion, the end-axis protrusion and the axial base ring are in contact connection, and the axial base ring is provided with an axial fixing internal pressure mechanism for locking and fixing the end-axis protrusion.

[0007] The shaft-fixed internal pressure mechanism includes multiple sets of corresponding clamps on the shaft base ring. Each set of corresponding clamps is provided with a set of blocking seats on one side facing the end-shaft protrusion. The blocking seat includes an integrally formed transverse downward extension and a longitudinal upward extension. The transverse downward extension is in contact with the outer peripheral surface of the end-shaft protrusion, and the longitudinal upward extension is in contact with the upper surface of the end-shaft protrusion.

[0008] The spinneret substrate is provided with an axis shifting assembly that drives multiple sets of co-positioned clamps to move synchronously towards or away from each other in the horizontal direction.

[0009] Preferably, the middle part of the stop seat rotates on the corresponding clamp, and in the initial state, the longitudinal extension is above the end-axis protrusion.

[0010] Preferably, the corresponding clamp is provided with a torsion spring that drives the stop seat to return to its initial state.

[0011] Preferably, the shaft shifting assembly includes a positioning crank fixedly connected to the shaft base ring, and the positioning crank is provided with a worm gear that can rotate freely in the vertical direction, with both ends of the worm gear rotating on the positioning crank with a fixed axis.

[0012] A motor for driving the worm gear to rotate is fixedly connected to the positioning crank;

[0013] The outer circumferential surface of the shaft base ring is fixedly rotated with a directional ring, and a hollow worm gear is fixedly sleeved on the directional ring, and the hollow worm gear is meshed with the worm.

[0014] Each of the multiple sets of co-positioned clamps is fixedly connected to a limiting pin at one end facing the directional ring, and the directional ring is provided with an arc-shaped sliding groove for the limiting pin to slide.

[0015] Preferably, multiple sets of U-shaped open support rods are fixedly connected to the axial base ring. The U-shaped open support rod includes two sets of integrally formed single support parts. The single support parts of adjacent U-shaped open support rods form an axial channel for sliding of the corresponding clamp. A transverse sliding groove is provided on the single support part for sliding connection of the corresponding clamp.

[0016] Preferably, the multiple sets of U-shaped open support rods and corresponding clamps are arranged in a circular array with the axial base ring as the center, and the multiple sets of U-shaped open support rods and multiple sets of corresponding clamps are arranged alternately.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model, by setting up an internal pressure mechanism for the shaft, utilizes the double clamping action of the stop seat to quickly fix the spinneret base plate on the shaft base ring, realizing the rapid installation of the spinneret. At the same time, it effectively avoids the loosening or displacement of the spinneret due to factors such as vibration and pressure changes during use, ensuring the stability of the spinneret process.

[0019] 2. In this utility model, the structural shape of the transverse downward extension is adapted to the outer peripheral surface of the end axial protrusion, which increases the contact area. At the same time, the friction coefficient of the stop seat is large, which can effectively prevent relative displacement between the spinneret substrate and the axial base ring. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the component containing the shaft base ring of this utility model;

[0022] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the component containing the corresponding clamp of this utility model;

[0024] Figure 5 This is a schematic diagram showing the state of the resistive seat of this utility model when the axial protrusions at opposite ends are clamped.

[0025] Figure 6 This is a schematic diagram of the component containing the U-shaped open support rod of this utility model;

[0026] Figure 7 This is a schematic diagram of the spinneret substrate structure of this utility model.

[0027] In the figure: 1. Spinneret base plate; 101. End-facing axial protrusion; 2. Positioning crank; 3. Shaft base ring; 4. U-shaped open support rod; 401. Single support; 5. Corresponding clamp; 6. Limiting pin; 7. Offset arc groove; 8. Stop seat; 801. Lateral downward extension; 802. Longitudinal top extension; 9. Orienting ring; 10. Hollow worm gear; 11. Worm. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 7This utility model provides a technical solution: a modular and easily detachable hollow fiber membrane spinneret, including a axial base ring 3 for supporting the spinneret substrate 1. The spinneret substrate 1 includes an integrally formed end-axis protrusion 101, which is in contact with the axial base ring 3. The axial base ring 3 is provided with an axial fixing internal pressure mechanism for locking and fixing the end-axis protrusion 101.

[0030] The shaft fixing internal pressure mechanism includes multiple sets of corresponding clamps 5 disposed on the shaft base ring 3. Each set of corresponding clamps 5 is provided with a set of blocking seats 8 on one side facing the end shaft protrusion 101. The blocking seat 8 includes an integrally formed transverse downward extension 801 and a longitudinal upward extension 802. The transverse downward extension 801 is in contact with the outer peripheral surface of the end shaft protrusion 101, and the longitudinal upward extension 802 is in contact with the upper surface of the end shaft protrusion 101.

[0031] The spinneret substrate 1 is provided with an axis shifting assembly that drives multiple sets of co-positioned clamps 5 to move synchronously towards or away from each other in the horizontal direction.

[0032] like Figure 1 - Figure 5 As shown, when installing the spinneret substrate 1, one end face of the integrally formed end-axis protrusion 101 in the spinneret substrate 1 is placed close to the surface of the shaft base ring 3. At this time, the spinneret substrate 1 and the end-axis protrusion 101 on it are between multiple sets of co-positioning clamps 5. The shaft shifting assembly drives the multiple sets of co-positioning clamps 5 to move synchronously towards each other in the horizontal direction, thereby causing the blocking seat 8 provided on the co-positioning clamp 5 to move closer to the end-axis protrusion 101.

[0033] Meanwhile, the middle part of the stop seat 8 rotates on the corresponding clamp 5. In the initial state, the longitudinal extension 802 is above the axial protrusion 101. The corresponding clamp 5 is provided with a torsion spring that drives the stop seat 8 to return to the initial state. When the transverse extension 801 integrally formed on a single or multiple sets of stop seats 8 abuts against the outer peripheral surface of the axial protrusion 101, the position of the spinneret substrate 1 is corrected by the subsequent horizontal displacement movement of the stop seat 8 following the displacement movement of the corresponding clamp 5. After the transverse extension 801 on multiple sets of stop seats 8 abuts against the outer peripheral surface of the axial protrusion 101, the spinneret substrate 1 and the shaft base ring 3 can be made to be in a coaxial position.

[0034] When the lateral extensions 801 on the multiple sets of stop seats 8 are all in contact with the outer peripheral surface of the axial protrusion 101, under the restriction of the spinneret substrate 1, as the co-position clamp 5 continues to move toward the axial protrusion 101, the stop seats 8 provided thereon cannot move synchronously with the co-position clamp 5. Therefore, when the co-position clamp 5 continues to approach the axial protrusion 101, the stop seats 8 will gradually deflect due to the movement of the co-position clamp 5 until the longitudinal extension 802 is in close contact with the upper surface of the axial protrusion 101.

[0035] It should be noted that, in actual use, the position of the spinneret substrate 1 on the shaft base ring 3 can be corrected by the horizontal movement of the stop seat 8 following the horizontal movement of the corresponding clamp 5, ensuring that the relative position of the spinneret substrate 1 on the shaft base ring 3 is fixed. Simultaneously, when the lateral extension 801 is in close contact with the surface of the end-shaft protrusion 101, causing the stop seat 8 to be unable to continue following the horizontal movement of the corresponding clamp 5, the stop seat 8 can be deflected on the corresponding clamp 5, thereby driving the torsion spring to deform and causing… The longitudinal extension 802 deflects toward the end-axis protrusion 101 and finally adheres tightly to the upper surface of the end-axis protrusion 101. The torsion spring is an existing device and a technical means well known to those skilled in the art, so it is not shown in the figure. Therefore, by setting the shaft shifting assembly and setting the stop seat 8 on the co-positioning clamp 5, the purpose of clamping and fixing the end-axis protrusion 101 in both directions can be achieved to ensure the stability of the spinneret substrate 1 on the shaft base ring 3, thereby further ensuring the fiber forming quality.

[0036] Meanwhile, the structural shape of the lateral extension 801 is adapted to the outer peripheral surface of the axial protrusion 101, thereby increasing the contact area between the lateral extension 801 and the outer peripheral surface of the axial protrusion 101. At the same time, the friction coefficient between the lateral extension 801 and the longitudinal extension 802 is relatively large, thereby preventing relative displacement between the spinneret substrate 1 and the shaft base ring 3 during use. During the use of the shaft base ring 3, the spinneret substrate 1 tends to move away from the positioning crank 2 due to the influence of the viscous polymer melt or solution. Under this tendency, the axial protrusion 101 compresses the longitudinal extension 802, thereby causing the longitudinal extension 802 to return to its initial state. Under this drive, the lateral extension 801 can further compress the outer peripheral surface of the axial protrusion 101, thereby increasing the fastening force on the outer peripheral surface of the axial protrusion 101 and preventing the axial protrusion 101 from detaching from the shaft base ring 3.

[0037] In one preferred embodiment, the shaft shifting assembly includes a positioning crank 2 fixedly connected to the shaft base ring 3, and the positioning crank 2 is provided with a worm gear 11 that can rotate freely in the vertical direction, with both ends of the worm gear 11 rotating on the positioning crank 2 at a fixed axis.

[0038] The positioning crank 2 is fixedly connected to a motor for driving the worm gear 11 to rotate. The outer circumferential surface of the shaft base ring 3 is fixedly rotated with an directional ring 9. A hollow worm wheel 10 is fixedly sleeved on the directional ring 9. The hollow worm wheel 10 is meshed with the worm gear 11. Each of the multiple sets of the co-position clamps 5 is fixedly connected to a limit pin 6 at one end facing the directional ring 9. The directional ring 9 is provided with an arc-shaped sliding groove 7 for the limit pin 6 to slide.

[0039] Multiple sets of U-shaped open support rods 4 are fixedly connected to the axial base ring 3. The U-shaped open support rod 4 includes two sets of integrally formed single support parts 401. The single support parts 401 of adjacent U-shaped open support rods 4 form an axial channel for sliding of the corresponding clamp 5. A transverse sliding groove is provided on the single support part 401 for sliding connection of the corresponding clamp 5.

[0040] Multiple sets of U-shaped open support rods 4 and corresponding clamps 5 are arranged in a circular array with the axial base ring 3 as the center, and the multiple sets of U-shaped open support rods 4 and multiple sets of corresponding clamps 5 are arranged alternately.

[0041] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, the worm gear 11 is driven to rotate in the vertical direction by a motor fixedly mounted on the positioning crank 2, which in turn causes the hollow worm wheel 10 meshing with it to rotate in the horizontal direction. At the same time, the hollow worm wheel 10 is fixedly mounted with the directional ring 9, and the directional ring 9 rotates on the shaft base ring 3, which in turn causes the directional ring 9 to rotate in the horizontal direction.

[0042] Meanwhile, the limiting pin 6 fixedly provided on the corresponding clamp 5 is slidably connected to the eccentric arc groove 7 through the eccentric arc groove 7. Under the restriction of the two adjacent single support parts 401, the corresponding clamp 5 cannot rotate synchronously with the directional ring 9. Therefore, the rotation process of the directional ring 9 can change the horizontal position of the corresponding clamp 5 through the eccentric arc groove 7 and cause the stop seat 8 on the corresponding clamp 5 to move closer to or away from the spinneret substrate 1, so as to achieve the purpose of clamping end axial protrusion 101 or releasing end axial protrusion 101. When the corresponding clamp 5 moves away from the spinneret substrate 1, the stop seat 8 can move away from the end axial protrusion 101 synchronously. Then, under the action of the torsion spring, the stop seat 8 can gradually return to the initial state, so as to achieve the purpose of resetting the stop seat 8 and the corresponding clamp 5.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular, easily detachable hollow fiber membrane spinneret, comprising a axial base ring (3) for supporting a spinneret substrate (1), characterized in that: The spinneret substrate (1) includes an integrally formed end-axis protrusion (101), which is in contact with the shaft base ring (3). The shaft base ring (3) is provided with a shaft fixing internal pressure mechanism for locking and fixing the end-axis protrusion (101). The shaft fixing internal pressure mechanism includes multiple sets of corresponding clamps (5) arranged on the shaft base ring (3). Each set of corresponding clamps (5) is provided with a set of stop seats (8) on one side facing the end shaft protrusion (101). The stop seat (8) includes an integrally formed transverse downward extension (801) and a longitudinal upward extension (802). The transverse downward extension (801) is in contact with the outer peripheral surface of the end shaft protrusion (101), and the longitudinal upward extension (802) is in contact with the upper surface of the end shaft protrusion (101). The spinneret substrate (1) is provided with an axis shifting assembly that drives multiple sets of co-position clamps (5) to move synchronously towards or away from each other in the horizontal direction.

2. The modular, easily detachable hollow fiber membrane spinneret according to claim 1, characterized in that: The middle part of the stop seat (8) rotates on the corresponding clamp seat (5) at a fixed axis. In the initial state, the longitudinal top extension (802) is above the end axial protrusion (101).

3. A modular, easily detachable hollow fiber membrane spinneret according to claim 2, characterized in that: The corresponding clamp (5) is provided with a torsion spring that drives the stop seat (8) to return to its initial state.

4. The modular, easily detachable hollow fiber membrane spinneret according to claim 1, characterized in that: The shaft shifting assembly includes a positioning crank (2) fixedly connected to the shaft base ring (3). The positioning crank (2) is provided with a worm (11) that can rotate freely in the vertical direction. Both ends of the worm (11) rotate on the positioning crank (2) with a fixed axis. A motor for driving the worm gear (11) to rotate is fixedly connected to the positioning crank (2); The outer circumferential surface of the shaft base ring (3) is fixedly rotated with a directional ring (9), and a hollow worm gear (10) is fixedly sleeved on the directional ring (9). The hollow worm gear (10) is meshed with the worm (11). Each of the multiple sets of co-position clamps (5) is fixedly connected to a limiting pin (6) at one end facing the directional ring (9), and the directional ring (9) is provided with an arc-shaped sliding groove (7) for the limiting pin (6) to slide.

5. A modular, easily detachable hollow fiber membrane spinneret according to claim 4, characterized in that: Multiple sets of U-shaped open support rods (4) are fixedly connected to the axial base ring (3). The U-shaped open support rod (4) includes two sets of integrally formed single support parts (401). The single support parts (401) of adjacent U-shaped open support rods (4) form an axial channel for sliding of the corresponding clamp (5). The single support parts (401) are provided with transverse sliding grooves for sliding connection of the corresponding clamp (5).

6. A modular, easily detachable hollow fiber membrane spinneret according to claim 5, characterized in that: Multiple sets of U-shaped open support rods (4) and co-position clamps (5) are arranged in a ring array with the axial base ring (3) as the center, and the multiple sets of U-shaped open support rods (4) and multiple sets of co-position clamps (5) are arranged alternately.

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