CN115928233A - Adjustable hollow fiber membrane coating spinneret - Google Patents
Adjustable hollow fiber membrane coating spinneret Download PDFInfo
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- CN115928233A CN115928233A CN202211641227.5A CN202211641227A CN115928233A CN 115928233 A CN115928233 A CN 115928233A CN 202211641227 A CN202211641227 A CN 202211641227A CN 115928233 A CN115928233 A CN 115928233A
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- spinneret
- cavity
- guide sleeve
- hollow fiber
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Abstract
The invention belongs to the field of membrane separation equipment, and particularly relates to an adjustable hollow fiber membrane coating spinneret plate, which comprises a spinneret plate cavity, a spinneret plate cavity cover connected with the spinneret plate cavity, and a membrane casting solution channel arranged in the spinneret plate cavity; the spinneret cavity and the spinneret cavity cover are provided with a spinneret cavity and a cavity cover cavity for accommodating a spinneret guide sleeve; the spinning plate guide sleeve is movably connected with the spinning plate cavity cover; a positioning cavity is arranged in the middle of the spinning plate guide sleeve and used for accommodating the lining braided tube; the invention designs the spinneret guide sleeve with adjustable function, and overcomes the problems that the parameters such as the pressure of a reaction kettle, the flow velocity of a feeding pump, the traction speed and the like need to be checked and adjusted one by one to find out the reasons and a large amount of waste products are generated in the process to cause cost waste because the thickness of a hollow fiber membrane coating and the outer diameter of the fiber are changed in the production process.
Description
Technical Field
The invention belongs to the field of membrane separation equipment, and particularly relates to an adjustable hollow fiber membrane coating spinning plate.
Background
In recent years, a membrane separation technology has been rapidly developed as a novel and efficient fluid separation technology, and is widely applied to the separation fields of water treatment, chemical industry, medicines, foods, beverages and the like. Compared with the conventional roll membrane, tubular membrane and flat membrane, the hollow fiber membrane has the outstanding advantages of large loading density per unit volume, large specific surface area, compact module structure, small size, portability and the like, and is far superior to other types of membranes in absolute advantage. In recent years, the requirement on the strength of hollow fiber membrane yarns is continuously increased due to the fact that the sewage treatment field is relatively severe relative to the water quality environment and the sludge concentration is continuously increased, and the lining braided tube reinforced hollow fiber membrane becomes a mainstream technology in the industry.
Therefore, coating spinnerets have become an important spinning pack in this field of film making. The structure directly determines the structure of the hollow fiber membrane, the operation process and the difficulty degree in the preparation process, and the like, and finally determines the quality of the hollow fiber.
A coating plate which has been developed so far is shown in fig. 1, and comprises a spinneret cavity 1', a spinneret guide sleeve 2' arranged in the spinneret cavity, and a casting solution channel arranged in the spinneret cavity; the lining braided tube enters the spinning plate guide sleeve from the lining braided tube inlet 4', the surface of the lining braided tube is coated with the casting solution in the downward movement process, the casting solution permeates the tube wall fabric layer of the lining braided tube and is uniformly distributed on the surface of the tube wall fabric layer, and then the tube wall fabric layer enters a coagulating bath from the membrane filament outlet to be solidified to obtain a finished membrane.
Because the hollow fiber membrane production process is comparatively complicated, in case the thickness of coating and the fibre external diameter change in the production process, just need carry out investigation one by one and adjustment to reation kettle pressure, feed pump velocity of flow, and draw speed isoparametric and ensure the fibre quality of producing, appear unusual in-process not only need a large amount of time to seek the reason, the in-process also can produce a large amount of waste products and come out, cause the waste of cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an adjustable hollow fiber membrane coating spinneret plate.
In order to achieve the purpose, the invention adopts the technical scheme that:
an adjustable hollow fiber membrane coating spinneret plate comprises a spinneret plate cavity, a spinneret plate cavity cover connected with the spinneret plate cavity, and a membrane casting liquid channel arranged in the spinneret plate cavity; the spinneret cavity and the spinneret cover are respectively provided with a spinneret cavity and a cavity cover cavity for accommodating a spinneret guide sleeve; the spinneret plate guide sleeve is movably connected with the spinneret plate cavity cover; a positioning cavity is arranged in the middle of the spinneret plate guide sleeve and used for accommodating the lining braided tube; the spinning plate cavity cover is provided with an inner lining braided tube inlet; the spinning plate cavity is provided with a membrane silk outlet; the spinning plate guide sleeve is provided with a plurality of through holes for the immersion of the casting solution.
And a sealing element is arranged between the spinneret plate cavity cover and the spinneret plate cavity.
The spinneret guide sleeve is in threaded connection with the spinneret cavity cover to realize height adjustment.
The spinneret cavity for receiving the spinneret guide sleeve and the cover cavity are one or more.
And a casting solution storage cavity is arranged between the casting solution channel and the spinning plate guide sleeve.
The spinneret cavity is also provided with an air outlet.
The membrane filament outlet is used as the bottom, and the position of the exhaust port is higher than the inlet of the membrane casting liquid channel.
The spinning plate guide sleeve is provided with an upper limit and a lower limit; the spacing interval is between 2 mm and 50 mm.
The spinning plate guide sleeve is convenient to manually adjust by knurling the bottom of the spinning plate guide sleeve.
Compared with the prior art, the invention has the beneficial effects that:
the invention designs the spinneret plate guide sleeve with adjustable function, and overcomes the problem that the parameters such as the pressure of a reaction kettle, the flow rate of a feeding pump, the traction speed and the like need to be checked and adjusted one by one to find the reasons and generate a large amount of waste products in the process to cause cost waste when the thickness of the hollow fiber membrane coating and the outer diameter of the fiber are changed in the production process.
Drawings
FIG. 1 is a schematic diagram of a prior art hollow fiber membrane coated spinneret;
FIG. 2 is a schematic view of the structure of a hollow fiber membrane coating spinneret according to an embodiment of the present application;
fig. 3 shows a schematic diagram of an adjustment process according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
Fig. 2-3 show an adjustable hollow fiber membrane coating spinneret, which comprises a spinneret cavity 1, a spinneret cavity cover 9 connected with the spinneret cavity, and a membrane casting solution channel 3 arranged in the spinneret cavity; the spinneret plate cavity cover is fixed at the upper end of the spinneret plate cavity through a bolt structure.
The spinneret cavity and the spinneret cover are provided with a spinneret cavity and a cavity cover cavity for accommodating the spinneret guide sleeve 2; the spinneret plate guide sleeve 2 is movably connected with the spinneret plate cavity cover 9; as an embodiment of the present application, the spinneret guide sleeve is screw-coupled to the spinneret chamber cover to achieve height adjustment. A positioning cavity is arranged in the middle of the spinneret plate guide sleeve and used for accommodating the lining braided tube; the spinning plate cavity cover is provided with an inner lining braided tube inlet 4; the spinning plate cavity is provided with a membrane yarn outlet 5; the spinning plate guide sleeve is provided with a plurality of through holes for the immersion of the casting solution. The adjustable hollow fiber membrane coating spinning plate is wholly used in a mode of being perpendicular to the ground, a lining weaving pipe enters from a lining weaving pipe inlet 4 at the upper end of a spinning plate guide sleeve and is drawn out from a membrane silk outlet 5 at the lower end of a spinning plate cavity after passing through membrane casting liquid in the spinning plate cavity.
And a sealing element 8 is arranged between the spinneret plate cavity cover and the spinneret plate cavity. And in the process of fixing and locking the spinneret plate cavity cover and the spinneret plate cavity through bolts, the sealing piece is extruded to completely seal the spinneret plate cavity, the spinneret plate cavity cover and the spinneret plate guide sleeve.
The spinneret cavity for receiving the spinneret guide sleeve and the cavity cover cavity are one or more. And a casting solution storage cavity 6 is arranged between the casting solution channel and the spinning plate guide sleeve. Each spinneret guide sleeve and the corresponding spinneret cavity form an independent casting solution storage cavity as a cavity coating space.
The spinneret plate cavity is also provided with an exhaust port 7. The outlet of the membrane yarn is used as the bottom, and the position of the exhaust port 7 is higher than the inlet of the membrane casting liquid channel 3, so that the air in the cavity of the spinning plate can be discharged conveniently. The spinning plate guide sleeve is provided with an upper limit and a lower limit; the spacing interval is between 2 mm and 50 mm. The spinning plate guide sleeve is convenient to manually adjust by knurling the bottom of the spinning plate guide sleeve.
As shown in fig. 3, the gap and height between the spinneret guide sleeve and the spinneret cavity are realized by adjusting the knurled handwheel arranged at the upper end of the spinneret guide sleeve, so that the coating height and coating time of the lining woven tube in the casting solution are realized, and the traditional mode of controlling the quality of the hollow fiber membrane by adjusting parameters such as the pressure of a reaction kettle, the flow rate of a feed pump, the traction speed and the like is replaced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. An adjustable hollow fiber membrane coating spinneret plate is characterized by comprising a spinneret plate cavity, a spinneret plate cavity cover connected with the spinneret plate cavity and a membrane casting liquid channel arranged in the spinneret plate cavity; the spinneret cavity and the spinneret cover are respectively provided with a spinneret cavity and a cavity cover cavity for accommodating a spinneret guide sleeve; the spinneret plate guide sleeve is movably connected with the spinneret plate cavity cover; a positioning cavity is arranged in the middle of the spinneret plate guide sleeve and used for accommodating the lining braided tube; the spinning plate cavity cover is provided with an inner lining braided tube inlet; the spinning plate cavity is provided with a film yarn outlet; the spinning plate guide sleeve is provided with a plurality of through holes for the immersion of the casting solution.
2. The adjustable hollow fiber membrane coating spinneret as claimed in claim 1, wherein a seal is provided between the spinneret cavity cover and the spinneret cavity.
3. The adjustable hollow fiber membrane coating spinneret as claimed in claim 1, wherein the spinneret guide sleeve is in threaded connection with the spinneret cavity cover to achieve height adjustment.
4. The adjustable hollow fiber membrane coating spinneret according to claim 1, wherein the spinneret cavity to receive the spinneret guide sleeve and the cavity cover cavity are one or more.
5. The adjustable hollow fiber membrane coating spinneret plate according to claim 1, wherein a membrane casting solution storage cavity is arranged between the membrane casting solution channel and the spinneret guide sleeve.
6. The adjustable hollow fiber membrane coated spinneret plate according to claim 1, wherein the spinneret plate cavity is further provided with an air outlet.
7. The adjustable hollow fiber membrane coating spinneret plate according to claim 6, wherein the membrane filament outlet is the bottom, and the exhaust port is located higher than the inlet of the membrane casting liquid channel.
8. The adjustable hollow fiber membrane coating spinneret as claimed in claim 1, wherein the spinneret guide sleeve is provided with an upper limit and a lower limit; the spacing interval is between 2 mm and 50 mm.
9. The adjustable hollow fiber membrane coated spinneret plate according to claim 1, wherein the spinneret plate guide sleeve is knurled at the bottom to facilitate manual adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211641227.5A CN115928233A (en) | 2022-12-20 | 2022-12-20 | Adjustable hollow fiber membrane coating spinneret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211641227.5A CN115928233A (en) | 2022-12-20 | 2022-12-20 | Adjustable hollow fiber membrane coating spinneret |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115928233A true CN115928233A (en) | 2023-04-07 |
Family
ID=86655743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211641227.5A Pending CN115928233A (en) | 2022-12-20 | 2022-12-20 | Adjustable hollow fiber membrane coating spinneret |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115928233A (en) |
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2022
- 2022-12-20 CN CN202211641227.5A patent/CN115928233A/en active Pending
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