CN215163330U - Dry-jet wet-spinning carbon fiber precursor spinneret plate cleaning device - Google Patents
Dry-jet wet-spinning carbon fiber precursor spinneret plate cleaning device Download PDFInfo
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- CN215163330U CN215163330U CN202120435528.7U CN202120435528U CN215163330U CN 215163330 U CN215163330 U CN 215163330U CN 202120435528 U CN202120435528 U CN 202120435528U CN 215163330 U CN215163330 U CN 215163330U
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Abstract
The utility model relates to a dry jet wet spinning carbon fiber precursor spinneret's belt cleaning device, including the washing tank, cleaner circulation pipeline, ultrasonic cleaning device, the mould temperature machine, the washing tank is connected with cleaner circulation pipeline, the entry of cleaner circulation pipeline and the exit linkage of washing tank, the export of cleaner circulation pipeline and the top cleaner entry linkage of washing tank, the one end of cleaner circulation pipeline sets up a plurality of shunts, every is connected the quick-operation joint respectively along separate routes, the part is connected with the washing tank along separate routes, the part is located the outside of washing tank along separate routes, ultrasonic cleaning device is connected with the washing tank, the mould temperature machine is connected with the washing tank. The cleaning agent can be recycled, the first pre-washing and the second washing can be separated, and the cleaning efficiency can be improved. The cleaning effect is further improved through ultrasonic cleaning synergistic treatment.
Description
Technical Field
The utility model belongs to polymer chemical fibre trade spinneret field, concretely relates to dry jet wet spinning carbon fiber precursor spinneret's belt cleaning device.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The high-performance polyacrylonitrile-based carbon fiber has excellent performances of high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, electric conduction, heat transfer, small thermal expansion coefficient and the like, so that formal and large-scale application is realized in the aerospace field, the military field and the advanced industrial field, the application field is still rapidly expanded at present, and the high-performance polyacrylonitrile-based carbon fiber is an extremely important dual-purpose material for military and civil use.
The high-performance polyacrylonitrile-based carbon fiber is generally manufactured by a spinning machine and is divided into a wet method and a dry method, and in the spinning process, the material quality, the pore diameter, the pore distribution, the length-diameter ratio of capillary pores and the like of a spinneret plate have important influences on the spinning conditions and the performance index of a precursor fiber.
In the production process of polyacrylonitrile protofilament, the cleanliness of a spray head directly influences the stability of spinning and the homogeneity and the discreteness of a protofilament structure, so that a spinneret plate must be cleaned regularly. The spinneret plate for dry-wet spinning has a large thickness because of high-pressure spinning. And the length-diameter ratio of the capillary hole of the spinneret plate is large, and the existing cleaning method has the problem that the residual slurry in the spinneret hole cannot be cleaned. If the spinneret plate is boiled by using a high-temperature solvent or chemically and physically cleaned by using an acid-base reagent, the surface of the spinneret plate is easy to corrode and damage pore canals, and if the cleaning time is too long, the quality of spinneret orifices of the spinneret plate is affected. The quality of the jet from the spinneret is affected.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the above-mentioned prior art, the utility model aims at providing a dry jet wet spinning carbon fiber precursor spinneret's belt cleaning device.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a dry-jet wet spinning carbon fiber precursor spinneret's belt cleaning device, which comprises a cleaning tank, cleaner circulation pipeline, ultrasonic cleaning device, the mould temperature machine, the washing tank is connected with cleaner circulation pipeline, the entry of cleaner circulation pipeline and the exit linkage of washing tank, the export of cleaner circulation pipeline and the top cleaner entry linkage of washing tank, the one end of cleaner circulation pipeline sets up a plurality of shunts, every is connected the quick-operation joint separately along separate routes, part is connected with the washing tank along separate routes, part is located the outside of washing tank along separate routes, ultrasonic cleaning device is connected with the washing tank, the mould temperature machine is connected with the washing tank.
The cleaning agent circulation pipeline is connected with the cleaning tank, the purpose of cleaning agent recycling is achieved, the quick connector is used for connecting the spinneret plate and the components of the spinneret plate, the cleaning agent flows out of the bottom of the cleaning tank and then circulates to the top of the cleaning tank through the cleaning agent circulation pipeline, the spinneret plate is washed, and recycling of the cleaning agent is achieved. Through the cleaning process of closed-loop circulation, the use amount of the cleaning agent is reduced, the cleaning effect is improved, and the cleaning time is shortened.
The cleaning agent circulation pipeline is divided into a plurality of branches, and the first pre-washing and the second washing are separately processed. The cleaning efficiency is improved.
The cleaning agent is washed and combined with the ultrasonic cleaning device, so that the purpose of ultrasonic cleaning is achieved. The purpose of heating the cleaning agent in the cleaning tank is realized by the mold temperature controller, the problem of improving the cleaning agent is solved, and the purpose of heating and cleaning is realized.
The utility model discloses one or more technical scheme has following beneficial effect:
the high-temperature and high-pressure jet circulation cleaning system and the auxiliary ultrasonic cleaning system are integrated, and the self-cleaning effect of the spinneret plate is improved and the cleaning time is reduced through closed-loop circulation control. And removing residual slurry in the spinneret holes.
The fixed ultrasonic transducer vertically corresponds to the spinneret plate, high-frequency ultrasonic oscillation and high-temperature and high-pressure self-circulation of the cleaning liquid are applied, the viscosity of residual stock solution in the spinneret plate is reduced, the collision probability of the stock solution and a solvent is improved, and the cleaning time is shortened.
The precision filter can clean impurities in the cleaning solvent in time, and the cleaning solution can be reused. The structural design of the filter can realize the self-cleaning function, the filtering effect and the service life of the filter element are prolonged, and the operation cost is greatly reduced.
And the pressure control and output of the closed-loop cleaning system are realized through the overflow pipeline.
The potential safety hazard in the traditional spinneret plate cleaning process is eliminated, batch cleaning treatment can be realized, the interchangeability of the solvent is strong, the cleaning effect is more obvious, the cleaning time is greatly shortened, and the cleaning cost is greatly reduced.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the invention and not to limit the invention unduly.
FIG. 1 is a schematic structural view of a cleaning apparatus for a dry-jet wet-spun carbon fiber precursor spinneret;
the device comprises a mold temperature controller 1, a cleaning tank 2, an ultrasonic cleaning device 3, a spinneret plate 4, a jacket 5, a circulating pump 6, a filter 7, a quick joint 8, an overflow valve 9, a second liquid discharge valve 10, a liquid discharge valve 11, a blowdown valve 12, a first pipeline valve 13, a first liquid discharge valve 14, a second pipeline valve 15 and a third pipeline valve 16.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The utility model provides a dry-jet wet spinning carbon fiber precursor spinneret's belt cleaning device, which comprises a cleaning tank, cleaner circulation pipeline, ultrasonic cleaning device, the mould temperature machine, the washing tank is connected with cleaner circulation pipeline, the entry of cleaner circulation pipeline and the exit linkage of washing tank, the export of cleaner circulation pipeline and the top cleaner entry linkage of washing tank, the one end of cleaner circulation pipeline sets up a plurality of shunts, every is connected the quick-operation joint separately along separate routes, part is connected with the washing tank along separate routes, part is located the outside of washing tank along separate routes, ultrasonic cleaning device is connected with the washing tank, the mould temperature machine is connected with the washing tank.
As a further technical scheme, a filter is arranged on the cleaning agent circulating pipeline.
As a further technical scheme, the cleaning agent circulating pipeline is connected with the outlet of the filter and a sewage discharge pipeline, and a sewage discharge valve is arranged on the sewage discharge pipeline.
As a further technical scheme, a first liquid discharge pipeline is arranged on the cleaning agent circulating pipeline and at the inlet of the filter, and a first liquid discharge valve is arranged on the first liquid discharge pipeline.
As a further technical scheme, a liquid outlet valve, a first pipeline valve and a circulating pump are arranged on the cleaning agent circulating pipeline and between the cleaning tank and the filter.
As a further technical scheme, the washing device further comprises an overflow pipeline, one end of the overflow pipeline is connected with an outlet of the filter, the other end of the overflow pipeline is connected with the washing tank, and a second pipeline valve and an overflow valve are arranged on the overflow pipeline.
As a further technical scheme, a third pipeline valve is arranged at an outlet of the cleaning agent liquid on the cleaning agent circulating pipeline.
As a further technical scheme, the ultrasonic cleaning device is positioned at the bottom of the cleaning tank, the quick connector is positioned at the top of the cleaning tank, the quick connector is connected with the spinneret plate, the spinneret plate is transversely arranged, and the spinneret plate is opposite to the ultrasonic cleaning device.
As a further technical scheme, a jacket is arranged on the side wall of the cleaning tank and is connected with the mold temperature controller through a pipeline.
As a further technical scheme, the bottom of the cleaning tank is connected with a second liquid discharge pipeline, and a second liquid discharge valve is arranged on the liquid discharge pipeline.
Dry-jet wet spinning carbon fiber precursor spinneret's belt cleaning device, including washing tank 2, cleaner circulation pipeline's one end sets up a plurality of shunts, and quick-operation joint 8 is connected respectively in every shunt, and partial shunt is connected with washing tank 2, and partial shunt is located the outside of washing tank 2. The cleaning agent in the cleaning tank 2 is firstly introduced into the branch outside the cleaning tank 2, the spinneret plate 4 on the branch outside the cleaning tank is pre-cleaned for the first time, after the cleaning agent is sprayed out of the spinneret plate 4, the spinneret plate 4 is moved onto the quick connector 8 inside the cleaning tank 2, the spinneret plate 4 and the components of the spinneret plate 4 are connected with the quick connector 8, then the cleaning agent starts to circularly clean the spinneret plate 4 for the second time, and further residual slurry in a spinneret hole of the spinneret plate 4 is cleaned.
The ultrasonic cleaning device 3 is a device for generating ultrasonic waves, and when the circulation of the cleaning agent is stopped, the ultrasonic cleaning device performs ultrasonic treatment on the spinneret plate 4, and then performs the above-mentioned first pre-cleaning and second cleaning processes. After 2 to 3 processes are circulated, the cleaning is finished.
The first pre-cleaning is the reason for the process of performing the first cleaning outside the cleaning tank after the cleaning tank 2 or after the ultrasonic cleaning, because the first pre-cleaning is to discharge the cleaning agent in the spinneret holes, then perform the second deep cleaning, and after the ultrasonic treatment, perform the first pre-cleaning again, which is to discharge the residual slurry of some spinneret holes cleaned after the ultrasonic cleaning, and then perform the second deep cleaning.
A filter 7 is arranged on the cleaning agent circulating pipeline. The filter 7 is provided in order to clean some impurities from the cleaning liquid. In one embodiment, the filter element used by the circulating filter is a 316L stainless steel wave folding filter element, the filtering precision is 3-5um, the filter element is provided with a protective sleeve, the filtering area is large, and the filter element can bear high temperature and high pressure; and the filter can realize the self-cleaning function, and the service efficiency and the service life of the filter element are prolonged.
And the outlet of the filter 7 is connected with a sewage discharge pipeline on the cleaning agent circulating pipeline, and a sewage discharge valve 14 is arranged on the sewage discharge pipeline. The filter is connected with the sewage discharge pipeline, so that when the filtering efficiency of the filter is reduced, impurities and microgel attached to the surface of the filter element are directly discharged out of the filter along with a cleaning agent by using the back flush pipeline.
And a liquid discharge pipeline is arranged on the cleaning agent circulation pipeline and at the inlet position of the filter 7, and a liquid discharge valve 12 is arranged on the liquid discharge pipeline. The drain valve 12 is for directly discharging the cleaning agent liquid at the filter inlet if the cleaning agent liquid is relatively dirty.
A liquid outlet valve 11, a first pipeline valve 13 and a circulating pump 6 are arranged between the cleaning tank and the filter on the cleaning agent circulating pipeline. The circulating pump 6 provides power for the circulation of the cleaning agent, and the outlet liquid is controlled by the outlet valve.
Still include the overflow pipeline, the one end of overflow pipeline and the exit linkage of filter, the other end is connected with the washing tank, sets up second pipeline valve 15, overflow valve 9 on the overflow pipeline. The pressure of the cleaning agent liquid at the outlet of the filter is adjusted through the overflow pipeline.
And a third pipeline valve is arranged at the outlet of the cleaning agent liquid of the cleaning tank on the cleaning agent circulating pipeline. The third pipe valve 16 controls the cleaning agent to enter the cleaning tank or stop. And switching between the first pre-cleaning and the second cleaning.
The ultrasonic cleaning device is located at the bottom of the cleaning tank, the quick connector is located at the top of the cleaning tank, and the quick connector is connected with the spinneret plate, so that the spinneret plate is transversely arranged and is opposite to the ultrasonic cleaning device. The fixed ultrasonic transducer vertically corresponds to the spinneret plate, high-frequency ultrasonic oscillation and high-temperature and high-pressure self-circulation of the cleaning liquid are applied, the viscosity of residual stock solution in the spinneret plate is reduced, the collision probability of the stock solution and a solvent is improved, and the cleaning time is shortened.
The side wall of the cleaning tank is provided with a jacket 5, and the jacket 5 is connected with the mold temperature controller 1 through a pipeline. The temperature of the cleaning agent is controlled through the mold temperature controller, so that the temperature of the cleaning agent for the first pre-cleaning and the second pre-cleaning is controlled, and the cleaning at different temperatures is realized. In one embodiment, the jacket of the cleaning tank is designed to be a double-layer structure, circulating water is introduced into the jacket, and then the temperature is controlled by a mold temperature controller.
The bottom of the cleaning tank is connected with a second liquid discharge pipeline, and a second liquid discharge valve 10 is arranged on the liquid discharge pipeline. The cleaning agent in the cleaning tank is discharged out of the cleaning tank through the second drain valve 10 if it is not suitable for further use.
Example 1
After spinning, the spinneret and its components are connected to the pipeline through the bypass quick connector 8. Pure dimethyl sulfoxide and dimethylacetamide are filled into the cleaning tank 2, and the ratio is 100: 20; back flushing with high-purity nitrogen to replace air in the solvent tank; the mold temperature machine 1 was started and the solvent, filter and tubing were heated to 80 ℃. Opening the multistage centrifugal pump 6, adjusting an overflow valve 9, controlling the pressure of a filter to be 0.45MPa, pre-discharging spinning stock solution in the spinneret plate and the spinneret component thereof, and controlling the time for 20min after sulfoxide is sprayed out of the spinneret plate; and closing the multistage centrifugal pump 6 and the liquid outlet valve 11, and immediately switching to connect the main circulation pipeline. Setting the temperature of a mold temperature machine to be 65 ℃, and starting the multistage centrifugal pump 6, the liquid outlet valve 11, the first pipeline valve 13 and the third pipeline valve 16; adjusting an overflow valve 9, controlling the filtering pressure of the filter 7 to be 0.4MPa, and circularly cleaning for 2 hours. And (3) closing the multistage centrifugal pump 6 and the liquid outlet valve 11, starting the ultrasonic cleaning system 3, controlling the frequency of the ultrasonic device at 28KHZ, and cleaning for 1 hour. And repeating the closed-loop circulating cleaning system and the ultrasonic cleaning system for 2-3 times.
After the cleaning, the surface of the spinneret plate is smooth and has no corrosion, and the hole plugging rate of each spinneret hole is 0%. No residual slurry is left in the spinneret holes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a belt cleaning device of wet spinning carbon fiber precursor spinneret futilely, its characterized in that: including the washing tank, cleaner circulation pipeline, ultrasonic cleaning device, the mould temperature machine, the washing tank is connected with cleaner circulation pipeline, the entry of cleaner circulation pipeline and the exit linkage of washing tank, the export of cleaner circulation pipeline and the top cleaner entry linkage of washing tank, the one end of cleaner circulation pipeline sets up a plurality of shunts, the quick-operation joint is connected respectively along separate routes to every, the part is connected with the washing tank along separate routes, the part is located the outside of washing tank along separate routes, ultrasonic cleaning device is connected with the washing tank, the mould temperature machine is connected with the washing tank.
2. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: a filter is arranged on the cleaning agent circulating pipeline.
3. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: and the outlet of the filter is connected with a sewage discharge pipeline which is provided with a sewage discharge valve.
4. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: and a first liquid discharge pipeline is arranged at the inlet of the filter on the cleaning agent circulation pipeline, and a first liquid discharge valve is arranged on the first liquid discharge pipeline.
5. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: a liquid outlet valve, a first pipeline valve and a circulating pump are arranged on the cleaning agent circulating pipeline between the cleaning tank and the filter.
6. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: still include the overflow pipeline, the one end of overflow pipeline and the exit linkage of filter, the other end is connected with the washing tank, sets up second pipeline valve, overflow valve on the overflow pipeline.
7. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: and a third pipeline valve is arranged at the outlet of the cleaning agent liquid on the cleaning agent circulating pipeline.
8. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: the ultrasonic cleaning device is located at the bottom of the cleaning tank, the quick connector is located at the top of the cleaning tank, and the quick connector is connected with the spinneret plate, so that the spinneret plate is transversely arranged and is opposite to the ultrasonic cleaning device.
9. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: the side wall of the cleaning tank is provided with a jacket, and the jacket is connected with a mold temperature controller through a pipeline.
10. The cleaning device for a dry-jet wet-spun carbon fiber precursor spinneret plate according to claim 1, wherein: the bottom of the cleaning tank is connected with a second liquid discharge pipeline, and a second liquid discharge valve is arranged on the liquid discharge pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435528.7U CN215163330U (en) | 2021-02-26 | 2021-02-26 | Dry-jet wet-spinning carbon fiber precursor spinneret plate cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120435528.7U CN215163330U (en) | 2021-02-26 | 2021-02-26 | Dry-jet wet-spinning carbon fiber precursor spinneret plate cleaning device |
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| CN215163330U true CN215163330U (en) | 2021-12-14 |
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| CN202120435528.7U Active CN215163330U (en) | 2021-02-26 | 2021-02-26 | Dry-jet wet-spinning carbon fiber precursor spinneret plate cleaning device |
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- 2021-02-26 CN CN202120435528.7U patent/CN215163330U/en active Active
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