High-strength hollow fiber membrane spinning nozzle

Abstract

The utility model discloses a high-strength hollow fiber membrane spinning nozzle which comprises a spinning nozzle upper die, a spinning nozzle core plate is arranged between the spinning nozzle upper die and a spinning nozzle lower die, and the spinning nozzle upper die, the spinning nozzle core plate and the spinning nozzle lower die are fixedly installed through fixing bolts. Spinning holes and reinforcing rib holes are formed in the lower surface of the lower spinning nozzle die, core rods are arranged in the upper spinning nozzle die, the spinning nozzle core plate and the lower spinning nozzle die, and a first liquid inlet hole and a second liquid inlet hole are formed in the surfaces of the two outer sides of the upper spinning nozzle die. According to the high-strength hollow fiber membrane spinning nozzle, through the split design of the spinning nozzle upper die, the spinning nozzle core plate and the spinning nozzle lower die in cooperation with the use of the core rod and the limiting flow dividing mechanism, reinforcing ribs are sprayed out in the mode that reinforcing rib holes are additionally formed in the center of the bottom of the spinning nozzle, and winding with a hollow fiber membrane is facilitated; and the problem that an additional runner is formed in the original spinning nozzle is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-strength hollow limiting membrane processing, in particular to a high-strength hollow fiber membrane spinneret. Background Art

[0002] A hollow fiber membrane is a membrane that looks like a fiber but is self-supporting. It is a type of asymmetric membrane. Its dense layer can be located on the outer surface of the fiber, such as a reverse osmosis membrane, or on the inner surface of the fiber, such as a microfiltration membrane, a nanofiltration membrane, and an ultrafiltration membrane. For gas separation membranes, the dense layer can be located on the inner or outer surface. Hollow fiber membranes have high porosity, large specific surface area, and excellent separation performance, so they are widely used in pharmaceuticals, biomedicine, food processing, semiconductors, environmental protection, and other fields. However, the mechanical strength of hollow fiber membranes is one of the main problems faced in their application. Therefore, in order to improve the tensile properties of hollow fiber membranes, the hollow fibers can be wound on the synchronously ejected reinforcing ribs by using a winding machine after the hollow fibers are ejected to increase the tensile properties of the hollow fiber membranes. However, this method requires adding holes to the traditional spinneret and adding a flow channel for transmission inside the spinneret, which is very troublesome to use. Utility Model Content

[0003] The utility model aims to provide a high-strength hollow fiber membrane spinneret to solve the problem of increasing the trouble of transmission flow channel proposed in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-strength hollow fiber membrane spinneret, comprising a spinneret upper mold, a spinneret core plate is arranged between the spinneret upper mold and the spinneret lower mold, and the spinneret upper mold, the spinneret core plate and the spinneret lower mold are fixedly installed by fixing bolts, the lower surface of the spinneret lower mold is provided with spinneret holes and reinforcing rib holes, the spinneret upper mold, the spinneret core plate and the spinneret lower mold are internally provided with a core rod, the two outer sides of the spinneret upper mold are provided with a first liquid inlet hole and a second liquid inlet hole, the upper surface of the spinneret upper mold is penetrated by a limiting and diverting mechanism, through which the glue injected into the first liquid inlet hole and the second liquid inlet hole is guided and the core rod is limited.

[0005] Preferably, a bottom inspection mechanism is provided on the side surface of the spinneret core plate for detecting the installation status between the spinneret upper mold, the spinneret core plate and the spinneret lower mold.

[0006] The above technical solution can prevent the spinneret upper mold, the spinneret core plate and the spinneret lower mold from being put into use before being properly installed.

[0007] Preferably, the lower end of the core rod is of conical design, and the lower end of the core rod is arranged opposite to the reinforcing rib hole, the limiting and diverting mechanism includes a guide rod, the upper end of the guide rod is provided with a block-shaped protrusion, and the guide rod is installed by clamping with the upper mold of the spinneret through the block-shaped protrusion, and the side surface of the guide rod is provided with a guide channel and a diverter channel.

[0008] By adopting the above technical solution, the flow guide rod can be used to replace the flow channel of the original spinneret through the preset flow guide channel and branch channel.

[0009] Preferably, one end of the guide channel passes through the side surface of the guide rod, and the end of the guide channel passing through the side surface of the guide rod is arranged opposite to the second liquid inlet hole, and the end of the guide channel located inside the guide rod is arranged opposite to the upper end of the core rod, one end of the branch channel passes through the side surface of the guide rod, and the end of the branch channel passing through the side surface of the guide rod is arranged opposite to the first liquid inlet hole, and the other end of the branch channel passes through the lower end side surface of the guide rod.

[0010] By adopting the above technical solution, the flow guide channel can separate the different glues injected into the first liquid inlet hole and the second liquid inlet hole through the core rod.

[0011] Preferably, a pin hole is provided on the side surface of the upper die of the spinneret, and a pin is inserted into the pin hole, and one end of the pin is engaged with the guide rod.

[0012] By adopting the above technical solution, the guide rod can be stably installed on the spinneret mold under the limitation of the pin.

[0013] Preferably, the bottom inspection mechanism includes an adjusting column, which is rotatably mounted on the outer surface of the spinneret core plate, and limiting grooves are provided inside the outer surfaces of the spinneret core plate, the spinneret upper mold and the spinneret lower mold, and a positioning rod is fixedly mounted on the side surface of the adjusting column.

[0014] By adopting the above technical solution, the adjusting column can drive the positioning rod to rotate inside the limiting groove.

[0015] Preferably, one end of the positioning rod is designed to be arc-shaped, and the arc-shaped end of the positioning rod is concentrically arranged with the adjustment column, and the arc-shaped end of the positioning rod is engaged with the limiting groove.

[0016] By adopting the above technical solution, the positioning rod cannot be rotated into position and engaged with the limiting groove when the spinneret upper mold, the spinneret core plate and the spinneret lower mold are not installed in place.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the high-strength hollow fiber membrane spinneret:

[0018] 1. Through the split design of the spinneret upper die, spinneret core plate and spinneret lower die, combined with the use of the core rod and the limit diversion mechanism, the spinneret can spray out the reinforcing ribs by adding a reinforcing rib hole in the middle of the bottom and facilitate winding with the hollow fiber membrane, avoiding the problem of opening an additional flow channel inside the original spinneret;

[0019] 2. Furthermore, by setting the position-limiting and diverting mechanism, when the specification of the middle reinforcing rib needs to be changed, the specification of the reinforcing rib can be changed by directly disassembling the guide rod and replacing the core rod, which reduces the processing cost and the difficulty of spare parts maintenance compared to directly replacing the spinneret;

[0020] 3. Furthermore, a bottom inspection mechanism is added to the spinneret core plate, so that the bottom inspection mechanism can detect the installation status between the spinneret upper mold, the spinneret core plate and the spinneret lower mold after the spinneret upper mold, the spinneret core plate and the spinneret lower mold are installed together, so as to ensure that the spinneret can work normally after installation without causing leakage and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of Embodiment 1 of the present utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the lower die and the spinneret hole of the utility model;

[0023] Figure 3 This is a three-dimensional structural schematic diagram of the cross-section surface of the connection between the pin hole and the pin of the utility model;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the cross-section surface connecting the guide rod and the diverter channel of the utility model;

[0025] Figure 5 This is a schematic diagram of the overall three-dimensional structure of Embodiment 2 of the present utility model;

[0026] Figure 6 This is a three-dimensional structural schematic diagram of the cross-section surface connecting the spinneret core plate and the adjustment column of the utility model;

[0027] Figure 7 It is a three-dimensional structural schematic diagram of the connection section of the limit groove and the positioning rod of the utility model.

[0028] In the figure: 1. spinneret upper mold; 2. spinneret core plate; 3. spinneret lower mold; 4. fixing bolt; 5. spinneret hole; 6. reinforcing rib hole; 7. core rod; 8. first liquid inlet hole; 9. second liquid inlet hole; 10. guide rod; 11. guide channel; 12. diverter channel; 13. pin hole; 14. pin; 15. limit groove; 16. adjustment column; 17. positioning rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1

[0031] See also Figure 1-4 , the present embodiment discloses: a spinneret upper mold 1, a spinneret core plate 2 is arranged between the spinneret upper mold 1 and the spinneret lower mold 3, and the spinneret upper mold 1, the spinneret core plate 2 and the spinneret lower mold 3 are fixedly installed by fixing bolts 4, a spinneret hole 5 and a reinforcing rib hole 6 are provided on the lower surface of the spinneret lower mold 3, a core rod 7 is arranged inside the spinneret upper mold 1, the spinneret core plate 2 and the spinneret lower mold 3, a first liquid inlet hole 8 and a second liquid inlet hole 9 are provided on the two outer surfaces of the spinneret upper mold 1, and the upper surface of the spinneret upper mold 1 is penetrated by a limiting shunt mechanism, through which the glue injected into the first liquid inlet hole 8 and the second liquid inlet hole 9 is guided and the core rod 7 is limited;

[0032] The lower end of the mandrel 7 is conical in design, and the lower end of the mandrel 7 is arranged opposite to the reinforcing rib hole 6. The limiting flow diversion mechanism includes a flow guide rod 10. The upper end of the flow guide rod 10 is provided with a block-shaped protrusion, and the flow guide rod 10 is engaged with the spinneret upper mold 1 through the block-shaped protrusion. The side surface of the flow guide rod 10 is provided with a flow guide channel 11 and a flow diversion channel 12.

[0033] One end of the flow guide 11 penetrates the side surface of the flow guide rod 10, and one end of the flow guide 11 penetrating the side surface of the flow guide rod 10 is arranged opposite to the second liquid inlet hole 9, and one end of the flow guide 11 located inside the flow guide rod 10 is arranged opposite to the upper end of the core rod 7, one end of the flow branch channel 12 penetrates the side surface of the flow guide rod 10, and one end of the flow branch channel 12 penetrating the side surface of the flow guide rod 10 is arranged opposite to the first liquid inlet hole 8, and the other end of the flow branch channel 12 penetrates the lower end side surface of the flow guide rod 10;

[0034] A pin hole 13 is provided on the side surface of the spinneret upper die 1, and a pin 14 is inserted into the pin hole 13, and one end of the pin 14 is engaged with the guide rod 10;

[0035] During installation, first stack the spinneret upper mold 1, the spinneret core plate 2 and the spinneret lower mold 3 together and fix them with the fixing bolts 4, then insert the core rod 7 downward into the spinneret lower mold 3, and then insert the guide rod 10 into the spinneret upper mold 1, and position and install it with the block-shaped protrusions on the side surface of the guide rod 10 and the spinneret upper mold 1. When the guide rod 10 is fully inserted, insert the pin 14 from the cover through the pin hole 13 into the spinneret upper mold 1 and engage with the guide rod 10, so that the guide rod 10 cannot be separated from the spinneret upper mold 1. At the same time, the guide rod 10 ensures the stability of the core rod 7 by squeezing the core rod 7 downward so that the core rod 7 is limited in the middle of the spinneret lower mold 3.

[0036] When in use, the injection pipes of different raw materials are respectively connected through the first liquid inlet hole 8 and the second liquid inlet hole 9. The first liquid inlet hole 8 injects the glue into the internal cavity of the spinneret lower mold 3 downwardly through the branch channel 12. The glue is finally sprayed out through the spinneret hole 5 and is captured by the winding machine for rotation after molding. The second liquid inlet hole 9 injects the glue into the core rod 7 downwardly through the guide channel 11 and finally sprays the glue through the reinforcement rib hole 6 and is captured by the pulling mechanism after molding to ensure that the reinforcement rib can remain horizontal after molding for hollow fiber winding molding.

[0037] Embodiment 2

[0038] See also Figure 5-7 , this embodiment is disclosed on the basis of embodiment 1: the side surface of the spinneret core plate 2 is provided with a bottom inspection mechanism for detecting the installation status between the spinneret upper mold 1, the spinneret core plate 2 and the spinneret lower mold 3;

[0039] The bottom inspection mechanism includes an adjustment column 16, which is rotatably mounted on the outer surface of the spinneret core plate 2, and the outer surfaces of the spinneret core plate 2, the spinneret upper mold 1 and the spinneret lower mold 3 are all provided with a limiting groove 15, and the side surface of the adjustment column 16 is fixedly mounted with a positioning rod 17;

[0040] One end of the positioning rod 17 is designed to be arc-shaped, and the arc-shaped end of the positioning rod 17 is concentrically arranged with the adjustment column 16, and the arc-shaped end of the positioning rod 17 is engaged with the limiting groove 15;

[0041] After the spinneret upper mold 1, the spinneret core plate 2 and the spinneret lower mold 3 are installed by the fixing bolts 4, the adjusting column 16 is rotated, and the adjusting column 16 drives the positioning rod 17 to rotate in the limiting groove 15. When the adjusting column 16 drives the positioning rod 17 to rotate so that the positioning rod 17 can accurately engage with one side of the arc of the limiting groove 15, it means that the spinneret upper mold 1, the spinneret core plate 2 and the spinneret lower mold 3 are accurately installed relative to each other.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength hollow fiber membrane spinneret, comprising a spinneret upper die (1), a spinneret core plate (2) is arranged between the spinneret upper die (1) and the spinneret lower die (3), and the spinneret upper die (1), the spinneret core plate (2) and the spinneret lower die (3) are fixedly installed by fixing bolts (4), a spinneret hole (5) and a reinforcing rib hole (6) are opened on the lower surface of the spinneret lower die (3), and a core rod (7) is arranged inside the spinneret upper die (1), the spinneret core plate (2) and the spinneret lower die (3), characterized in that: A first liquid inlet hole (8) and a second liquid inlet hole (9) are provided on the two outer surfaces of the upper mold (1) of the spinneret, and a limiting flow-dividing mechanism penetrates the upper surface of the upper mold (1) of the spinneret, through which the glue liquid injected into the first liquid inlet hole (8) and the second liquid inlet hole (9) is guided and the core rod (7) is limited.

2. A high-strength hollow fiber membrane spinneret according to claim 1, characterized in that: The side surface of the spinneret core plate (2) is provided with a bottom inspection mechanism for detecting the installation status between the spinneret upper mold (1), the spinneret core plate (2) and the spinneret lower mold (3).

3. A high-strength hollow fiber membrane spinneret according to claim 1, characterized in that: The lower end of the core rod (7) is of conical design, and the lower end of the core rod (7) is arranged opposite to the reinforcing rib hole (6). The limiting flow diversion mechanism comprises a flow guide rod (10), the upper end of the flow guide rod (10) is provided with a block-shaped protrusion, and the flow guide rod (10) is mounted on the spinneret upper mold (1) through the block-shaped protrusion, and the side surface of the flow guide rod (10) is provided with a flow guide channel (11) and a flow diversion channel (12).

4. A high-strength hollow fiber membrane spinneret according to claim 3, characterized in that: One end of the guide channel (11) passes through the side surface of the guide rod (10), and one end of the guide channel (11) passing through the side surface of the guide rod (10) is arranged opposite to the second liquid inlet hole (9), and one end of the guide channel (11) located inside the guide rod (10) is arranged opposite to the upper end of the core rod (7), one end of the branch channel (12) passes through the side surface of the guide rod (10), and one end of the branch channel (12) passing through the side surface of the guide rod (10) is arranged opposite to the first liquid inlet hole (8), and the other end of the branch channel (12) passes through the lower end side surface of the guide rod (10).

5. The high-strength hollow fiber membrane spinneret according to claim 1, characterized in that: A pin hole (13) is provided on the side surface of the spinneret upper die (1), a pin (14) is inserted into the pin hole (13), and one end of the pin (14) is engaged with the guide rod (10) for installation.

6. A high-strength hollow fiber membrane spinneret according to claim 2, characterized in that: The bottom inspection mechanism comprises an adjustment column (16), the adjustment column (16) is rotatably mounted on the outer surface of the spinneret core plate (2), and the outer surfaces of the spinneret core plate (2), the spinneret upper mold (1) and the spinneret lower mold (3) are all provided with limiting grooves (15), and the side surface of the adjustment column (16) is fixedly mounted with a positioning rod (17).

7. A high-strength hollow fiber membrane spinneret according to claim 6, characterized in that: One end of the positioning rod (17) is designed to be arc-shaped, and the arc-shaped end of the positioning rod (17) is arranged concentrically with the adjustment column (16), and the arc-shaped end of the positioning rod (17) is engaged with the limiting groove (15).

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