Multi-layer hollow fiber membrane spinning nozzle
By designing a protective shell and a reset spring structure for the spinneret, the problem of dust contamination in the spinneret was solved, achieving spinneret protection and efficient preparation of multilayer hollow fiber membranes, ensuring membrane fiber performance and reducing production costs.
Patent Information
- Application Number
- CN202422928289.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing multilayer hollow fiber membrane spinnerets are easily contaminated by dust when not in use, which affects the performance and quality of the membrane fibers.
A multilayer hollow fiber membrane spinneret was designed, comprising a spinneret sleeve, a vertical insert rod, a protective shell, and a return spring. The protective shell covers the spinneret to prevent dust contamination inside the spinneret. The return spring engages the operating plate to protect the spinneret from dust contamination. The multilayer membrane is prepared by the coaxial arrangement of the stainless steel needle tube.
It effectively prevents dust contamination inside the spinneret, ensuring the performance and quality of the membrane fibers. At the same time, the coaxial stainless steel needle tube enables the efficient preparation of multilayer hollow fiber membranes, reducing production costs.
Smart Images
Figure CN223633528U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hollow fiber membrane manufacturing technical field, concretely is a kind of multilayer hollow fiber membrane spinneret. BACKGROUND
[0002] Hollow fiber membrane spinneret is important component for spinning hollow fiber membrane in membrane separation technical field.Hollow fiber membrane is widely used in ultrafiltration, reverse osmosis and other aspects, for example in artificial kidney hemodialysis medical measures.The key material for manufacturing these membranes is hollow fiber membrane, and the design and manufacturing quality of spinneret directly affect the performance of final product.
[0003] Existing multilayer hollow fiber membrane spinneret is usually in bare state when not working, so that spinneret inside is easily contaminated by dust after long time, and the performance and quality of membrane filament are affected.
[0004] Therefore, in view of the above, the existing structure and the lack are improved, and a multilayer hollow fiber membrane spinneret is provided. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a kind of multilayer hollow fiber membrane spinneret to solve the problems presented in the above background.
[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of multilayer hollow fiber membrane spinneret, including nozzle sleeve and vertical plug rod, the top of the nozzle sleeve is provided with threaded mounting hole, and threaded mounting hole is connected with nozzle body, the surface of the nozzle body is penetrated and is provided with core liquid injection port, and one end of core liquid injection port is connected with stainless steel needle tube one, the vertical plug rod is arranged at the bottom edge of nozzle sleeve, and the bottom of nozzle sleeve is provided with cylindrical boss, the outside of the cylindrical boss is provided with protective shell, and the top of protective shell is provided with through hole one, the outside of the protective shell is provided with through hole two, and horizontal plug rod is arranged in through hole two, one end of the horizontal plug rod is fixed with operating plate, and the outside of horizontal plug rod is provided with reset spring.
[0007] Further, the thread of the threaded mounting hole is adapted to the thread outside the nozzle body, and the core liquid injection port and the stainless steel needle tube one are connected with each other, and the stainless steel needle tube one penetrates the middle part of the cylindrical boss.
[0008] Further, the top of the nozzle body is penetrated and is provided with liquid injection port one, and liquid injection port one is provided with liquid cavity one below.
[0009] Further, the bottom of the liquid cavity one is provided with stainless steel needle tube two, and the stainless steel needle tube two is arranged outside the stainless steel needle tube one.
[0010] Further, the outside of the nozzle sleeve is provided with a second liquid inlet, and the inside of the nozzle sleeve is provided with a second liquid cavity.
[0011] Further, the outside of the second stainless steel needle tube is provided with a third stainless steel needle tube, and the second liquid cavity and the third stainless steel needle tube are in communication.
[0012] Further, one end of the reset spring away from the operation plate is fixedly connected with the protective shell, the vertical insertion rod and the horizontal insertion rod are hingedly connected, and the vertical insertion rod and the horizontal insertion rod are provided in the same number.
[0013] The utility model provides a kind of multilayer hollow fiber membrane spinneret, with the following beneficial effects:
[0014] 1, the vertical insertion rod is inserted into the through hole one in the top of protective shell, the elastic force of reset spring is utilized to make operation plate close to cylindrical boss axial direction, until the horizontal insertion rod and vertical insertion rod form hinged connection, cylindrical boss is covered by protective shell, protect the inside of spinneret from dust pollution.
[0015] 2, the diameter of the first stainless steel needle tube, the second stainless steel needle tube and the third stainless steel needle tube increases in turn, and is coaxially arranged, and is independent of each other, so that different components of liquid are injected, and multilayer hollow fiber membrane can be formed by spraying, time is saved, and cost is reduced. DRAWINGS
[0016] Figure 1 It is a cross-sectional structure diagram of the utility model multilayer hollow fiber membrane spinneret;
[0017] Figure 2 It is a nozzle sleeve appearance structure diagram of the utility model multilayer hollow fiber membrane spinneret;
[0018] Figure 3 It is a protective shell three-dimensional structure diagram of the utility model multilayer hollow fiber membrane spinneret.
[0019] In the drawing: 1, nozzle sleeve;2, threaded mounting hole;3, cylindrical boss;4, nozzle body;5, core liquid inlet;6, first stainless steel needle tube;7, first liquid inlet;8, first liquid cavity;9, second stainless steel needle tube;10, second liquid inlet;11, second liquid cavity;12, third stainless steel needle tube;13, vertical insertion rod;14, protective shell;15, through hole one;16, through hole two;17, reset spring;18, operation plate;19, horizontal insertion rod. DETAILED DESCRIPTION
[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0021] like Figure 1 As shown, a multilayer hollow fiber membrane spinneret includes a spinneret sleeve 1 and a vertical insert 13. The vertical insert 13 is disposed at the bottom edge of the spinneret sleeve 1, and a cylindrical boss 3 is disposed at the bottom of the spinneret sleeve 1. A protective shell 14 is disposed outside the cylindrical boss 3, and a through hole 15 is opened at the top of the protective shell 14. A second through hole 16 is opened outside the protective shell 14, and a horizontal insert 19 is inserted through the second through hole 16. An operating plate 18 is fixed to one end of the horizontal insert 19, and a return spring 17 is sleeved on the outside of the horizontal insert 19. The end of the return spring 17 away from the operating plate 18 is fixedly connected to the protective shell 14. The vertical insert 13 and the horizontal insert 19 are engaged and connected, and the number of vertical insert 13 and horizontal insert 19 is the same.
[0022] The specific operation is as follows: insert the vertical insertion rod 13 into the through hole 15 at the top of the protective shell 14, and use the elastic force of the return spring 17 to make the operating plate 18 move towards the axis of the cylindrical boss 3 until the horizontal insertion rod 19 and the vertical insertion rod 13 are engaged. The cylindrical boss 3 is covered by the protective shell 14 to protect the inside of the spinneret from dust contamination.
[0023] like Figure 2 As shown, the top of the nozzle sleeve 1 is provided with a threaded mounting hole 2, and the nozzle body 4 is connected inside the threaded mounting hole 2. The surface of the nozzle body 4 is provided with a core liquid injection port 5, and one end of the core liquid injection port 5 is connected to a stainless steel needle tube 6. The thread of the threaded mounting hole 2 is adapted to the thread on the outside of the nozzle body 4, and the core liquid injection port 5 and the stainless steel needle tube 6 are connected to each other. The stainless steel needle tube 6 passes through the middle of the cylindrical boss 3. The top of the nozzle body 4 is provided with a material liquid injection port 7, and a material liquid chamber 8 is provided below the material liquid injection port 7. A stainless steel needle tube 9 is provided below the material liquid chamber 8 and is located outside the stainless steel needle tube 6. A material liquid injection port 10 is opened on the outside of the nozzle sleeve 1, and a material liquid chamber 11 is provided inside the nozzle sleeve 1. A stainless steel needle tube 12 is provided outside the stainless steel needle tube 9, and the material liquid chamber 11 and the stainless steel needle tube 12 are connected to each other.
[0024] The specific operation is as follows: the diameters of stainless steel needle tube 1 (6), stainless steel needle tube 2 (9), and stainless steel needle tube 3 (12) increase sequentially and are kept coaxially and independently of each other. Therefore, by injecting liquids of different compositions, multiple layers of hollow fiber membranes can be formed by spraying out simultaneously, achieving the effect of saving time and reducing costs.
[0025] In summary, the multilayer hollow fiber membrane spinneret, in use, first, the spinneret body 4 is installed into the threaded mounting hole 2 at the top of the spinneret sleeve 1, the spinneret body 4 and the spinneret body 4 are detachably fixedly connected by threads, at this time, the stainless steel needle tube two 9 is arranged in the stainless steel needle tube three 12, the stainless steel needle tube one 6, the stainless steel needle tube two 9 and the stainless steel needle tube three 12 are coaxially arranged;
[0026] When the multilayer hollow fiber membrane needs to be produced, the core liquid flows into the core liquid inlet 5, flows out from the stainless steel needle tube one 6 at a smooth and stable flow rate under the action of pressure and gravity and forms a membrane filament, then the inner layer membrane material liquid flows into the material liquid inlet one 7, flows out from the stainless steel needle tube two 9 at a smooth and stable flow rate under the action of pressure and gravity and forms a membrane filament, then the outer layer membrane material liquid flows into the material liquid inlet two 10, flows out from the stainless steel needle tube three 12 at a smooth and stable flow rate under the action of pressure and gravity and forms a membrane filament, and since the membrane filaments formed by the core liquid, the inner layer membrane material liquid and the outer layer membrane material liquid are arranged from inside to outside, the multilayer hollow fiber membrane is produced;
[0027] After use, the operating plate 18 is pushed outwards from the gap at the bottom of the protective shell 14, so that the transverse insertion rod 19 is withdrawn from the through hole one 15, then the spinneret sleeve 1 is vertically inserted into the through hole one 15 at the top of the protective shell 14 through the vertical insertion rod 13, the operating plate 18 is loosened, the operating plate 18 is moved towards the axis direction of the cylindrical boss 3 by the elastic force of the reset spring 17, until the transverse insertion rod 19 and the vertical insertion rod 13 are clamped, the protective shell 14 is installed outside the cylindrical boss 3, the spinneret is prevented from being exposed and contaminated by dust, a good protection effect is achieved, and the performance and quality of the membrane filament are ensured.
[0028] The embodiments of the present application are given for the purpose of example and description, and are not exhaustive or limit the present application to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the present application, and to enable those skilled in the art to understand the present application so as to design various embodiments with various modifications suitable for specific purposes.
Claims
1. A multi-layer hollow fiber membrane spinneret comprising a spinneret sleeve (1) and a vertical insertion rod (13), characterized in that, The top of the spray head sleeve (1) is provided with a threaded mounting hole (2), and a spray head body (4) is connected in the threaded mounting hole (2), the surface of the spray head body (4) is provided with a core liquid inlet (5) penetrating through, and one end of the core liquid inlet (5) is connected with a stainless steel needle tube one (6), the vertical insertion rod (13) is arranged at the bottom edge of the spray head sleeve (1), and the bottom of the spray head sleeve (1) is provided with a cylindrical boss (3), the outside of the cylindrical boss (3) is provided with a protective shell (14), and a through hole one (15) is formed in the top of the protective shell (14), a through hole two (16) is formed in the outside of the protective shell (14), and a transverse insertion rod (19) is arranged in the through hole two (16), one end of the transverse insertion rod (19) is fixedly connected with an operation plate (18), and the outside of the transverse insertion rod (19) is sleeved with a reset spring (17).
2. The multi-layer hollow fiber membrane spinneret according to claim 1, wherein The threads of the threaded mounting hole (2) are matched with the threads outside the spray head body (4), and the core liquid inlet (5) and the stainless steel needle tube one (6) are connected with each other, and the stainless steel needle tube one (6) penetrates through the middle part of the cylindrical boss (3).
3. The multi-layer hollow fiber membrane spinneret of claim 1, wherein, The top of the spray head body (4) is provided with a liquid inlet one (7) penetrating through, and a liquid cavity one (8) is arranged below the liquid inlet one (7).
4. The multi-layer hollow fiber membrane spinneret according to claim 3, wherein A stainless steel needle tube two (9) is arranged below the liquid cavity one (8), and the stainless steel needle tube two (9) is arranged outside the stainless steel needle tube one (6).
5. A multi-layer hollow fiber membrane spinneret according to claim 4, characterized in that A liquid inlet two (10) is formed in the outside of the spray head sleeve (1), and a liquid cavity two (11) is arranged in the inside of the spray head sleeve (1).
6. A multi-layer hollow fiber membrane spinneret according to claim 5, characterized in that A stainless steel needle tube three (12) is arranged outside the stainless steel needle tube two (9), and the liquid cavity two (11) and the stainless steel needle tube three (12) are communicated with each other.
7. The multi-layer hollow fiber membrane spinneret of claim 1, wherein, One end of the reset spring (17) away from the operation plate (18) is fixedly connected with the protective shell (14), the vertical insertion rod (13) and the transverse insertion rod (19) are clampedly connected, and the vertical insertion rod (13) and the transverse insertion rod (19) are arranged in the same number.