CN111139543A - Carbon fiber precursor washing device - Google Patents
Carbon fiber precursor washing device Download PDFInfo
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- CN111139543A CN111139543A CN202010092836.4A CN202010092836A CN111139543A CN 111139543 A CN111139543 A CN 111139543A CN 202010092836 A CN202010092836 A CN 202010092836A CN 111139543 A CN111139543 A CN 111139543A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/06—Washing or drying
Abstract
The invention relates to the technical field of carbon fiber preparation, in particular to a carbon fiber precursor washing device which is additionally provided with a flower wheel and systems for internal self-circulation, overflow, water supplement and the like of washing water on the basis of traditional spraying and rinsing, so that the washing process requirements under different spinning processes are met, and the washing effect under a high-speed spinning process is more advantageous. An independent self-circulation system is designed in a rinsing bath of the device, so that the uniformity of a temperature field and the timely diffusion and dilution of a solvent are realized. The design of the final-stage water replenishing, reverse water replenishing and overflowing device can realize the continuous replenishment of fresh water in the final-stage rinsing bath, the cascade control of the rinsing bath and the stepwise reverse water replenishing. The carbon fiber precursor washing device has the characteristic of multi-technology integration, effectively strengthens the washing effect, and reduces the energy consumption of a heating system; the investment cost of equipment and space increased due to the shortage of the length and the space of the water washing tank is reduced, the device can be directly transformed on the existing spinning equipment, and the advantages are obvious.
Description
Technical Field
The invention relates to the technical field of carbon fiber preparation, in particular to a carbon fiber precursor washing device.
Background
The information disclosed in this background of the invention is only for enhancement of understanding of the general background of the invention and is not necessarily to be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
In the spinning process of carbon fiber precursors, no matter wet spinning or dry-jet wet spinning is carried out, the residual amount of a solvent in the precursors influences the cross-sectional shape and the crystalline structure of the fibers, and the performance of the carbonized carbon fibers is finally influenced. Therefore, the proper water washing process can remove the residual solvent in the fiber and eliminate the damage to the fiber. Factors influencing water washing are various, and the structure of the fiber before water washing, the water washing temperature, the water washing time and the like directly influence the water washing effect. For the water washing process, high washing efficiency is required. At present, several industrialized carbon fiber precursor production companies in China commonly use a single rinsing technology or a rinsing and spraying combined technology or adopt a laminated water washing device. The stacked device has a washing effect superior to that of the two modes and has the advantage of small floor area. However, the most defects of the method are that the equipment is complicated, the guide wheels are too many, tows are easy to be wound, disorderly and twisted, the washing efficiency is influenced, the equipment investment is large, and the running cost is high.
Disclosure of Invention
The invention aims to solve the problems that a washing device in the prior art is complex and cannot meet the requirements of a washing process. Therefore, the invention provides the carbon fiber precursor washing device which has high washing efficiency and adjustable and controllable washing process; the investment cost of the equipment is low, and the rapid butt joint matching can be realized on the original equipment; the method has more advantages on high-speed spinning under the dry-jet wet process, water washing effect and operation cost.
In order to achieve the purpose, the invention adopts the following technical means:
the invention discloses a carbon fiber precursor washing device which comprises a primary washing tank, a secondary washing tank, a primary drawing roller, a secondary drawing roller, a tertiary drawing roller, a spinning wheel, a primary internal circulation system, a secondary internal circulation system, a reverse water replenishing system, a new water replenishing system, an overflow system, a primary spraying system and a secondary spraying system, wherein the primary drawing roller is arranged on the primary side of the primary drawing roller; wherein:
a first-stage drafting roller, a second-stage drafting roller and a third-stage drafting roller are respectively arranged at two ends of the first-stage rinsing bath and the second-stage rinsing bath, and the second-stage drafting roller is positioned between the first-stage rinsing bath and the second-stage rinsing bath; the first-stage rinsing bath and the second-stage rinsing bath are both provided with flower wheels.
The first-stage internal circulation system comprises a first-stage circulating pump and a first-stage internal circulation pipeline, and the first-stage internal circulation pipeline is separated from the outlet of the first-stage circulating pump, so that the washing liquid can be self-circulated in the first-stage rinsing bath.
The second-stage internal circulation system comprises a second-stage circulating pump and a second-stage internal circulation pipeline, and the second-stage internal circulation pipeline is separated from the outlet of the circulating pump, so that the self-circulation of the washing liquid in the second-stage rinsing bath is realized.
Reverse water charging system includes that second grade circulating pump, one-level moisturizing pipeline, one-level flowmeter and pipeline constitute, the one-level flowmeter is installed on the one-level moisturizing pipeline, through the tube coupling between one-level wash bowl and the second grade wash bowl, and the water of second grade wash bowl gets into the one-level wash bowl after the second grade circulating pump provides power and gets into the one-level flowmeter measurement, accomplishes reverse moisturizing process.
The fresh water supplementing system comprises a secondary water supplementing pipeline and a secondary flowmeter, the secondary flowmeter is installed on the secondary water supplementing pipeline, and deionized purified water provided from the outside enters a secondary rinsing bath after being metered by the secondary flowmeter to realize a water supplementing process.
The overflow system comprises an overflow pipeline, a first flowmeter and a water receiving funnel, wherein the water inlet end of the overflow pipeline extends into the first-stage rinsing bath, the first flowmeter is installed on the overflow pipeline, the water outlet end of the overflow pipeline is outside the first-stage rinsing bath, and the water receiving funnel is located below the water outlet end of the overflow pipeline. The reverse water supply quantity flows into the water receiving funnel after being measured by the first flowmeter and enters the sewage recovery pipeline system.
The primary spraying system comprises a primary spraying pipeline and a primary circulating pump, and the primary circulating pump provides spraying power; the second-stage spraying system comprises a second-stage spraying pipeline and a second-stage circulating pump, and the second-stage circulating pump provides spraying power.
Furthermore, the driving roller of one-level rinsing bath is located towards second grade drafting roller to the water outlet end of one-level moisturizing pipeline, and the driving roller of one-level rinsing bath is located towards tertiary drafting roller to the water outlet end of second grade moisturizing pipeline, helps further getting rid of the residual solvent on the precursor.
Furthermore, the water outlet end of the overflow pipeline faces to a driving roller which is positioned outside the primary rinsing bath by the primary drawing roller, so that residual solvent on the protofilaments can be removed in advance by using waste water needing to be discharged.
Furthermore, the water outlet end of the primary water replenishing pipeline and the water outlet end of the secondary water replenishing pipeline are both provided with a spray head; and the water outlet ends of the overflow pipelines are provided with spray heads.
Furthermore, the flower wheel consists of a disc, a round rod, a ceramic bearing and a rotating shaft; the round bar is fixed between the two disks to form the outer surface of the spline wheel, and the rotating shaft penetrates through the central axis of the disks and is connected with the disks through ceramic bearings to form a squirrel-cage-shaped structure.
Furthermore, the disc, the round rods and the rotating shaft are all made of 316 stainless steel, the surfaces of the round rods are polished to achieve mirror surface precision, and optionally, the number of the round rods is 8, and the round rods are uniformly distributed on the disc; the washed silk is extruded by the surface of the circular bar of the spinning wheel, so that the washed silk is opened and widened, and the washing effect is stronger.
Furthermore, the ceramic bearing adopts a silicon nitride all-ceramic bearing, and has the characteristics of high temperature resistance, corrosion resistance, wear resistance, oil-free self-lubrication, high rotating speed and the like.
Optionally, each rinsing bath can be provided with two-stage, three-stage or multi-stage floral whorls according to the process requirements; the angle of the flower wheel is finely adjusted, multiple times of reciprocating washing can be realized, and the washing effect is improved.
The water washing tank bottom distribution plate is characterized by further comprising a fixed seat of the floral whorl, the fixed seat is composed of two side panels, a bottom plate, a fixing screw rod and a fastening nut, the two side panels are fixed at the two ends of the bottom plate to form a groove-shaped structure, the bottom plate is fixed with the bottom distribution plate of the water washing tank through the fixing screw rod and the fastening nut, and a rotating shaft of the floral whorl is installed on the two side panels. Optionally, 2-3 floral rings can be additionally arranged in each rinsing tank according to the rinsing process requirement.
Furthermore, heating coils and a temperature self-control system are arranged in the primary rinsing bath and the secondary rinsing bath, so that conventional rinsing of the protofilament is realized.
Furthermore, the first-stage drafting roller, the second-stage drafting roller and the third-stage drafting roller are all roller drafting machines, the driving roller is made of SS316 stainless steel, and the surface of the driving roller is subjected to mirror polishing treatment, so that the washing time and the drafting tension of the raw silk bundle in a washing tank are controlled.
Furthermore, N stages of rinsing tanks can be additionally arranged according to the requirements of the rinsing process, each stage of rinsing tank is controlled in a cascade mode, the later stage rinsing tank is used for metering and replenishing water to the earlier stage rinsing tank, and finally, the overflow is metered through the first stage rinsing tank.
Compared with the prior art, the invention has the following beneficial effects:
(1) the carbon fiber precursor washing device is additionally provided with a flower wheel and systems for internal self-circulation, overflow, water replenishing and the like of washing water on the basis of traditional spraying and rinsing, so that the washing process requirements under different spinning processes are met, and the washing effect under the high-speed spinning process is more advantageous.
(2) The unique design of the floral whorl structure designed by the invention can realize the adjustability and controllability of the water washing process; realizes the continuous operation of the washing silk in the states of extrusion, fiber opening and width expanding, and improves the washing effect.
(3) The independent self-circulation system in the rinsing bath realizes the uniformity of a temperature field and the timely diffusion and dilution of a solvent. The design of the final-stage water replenishing, reverse water replenishing and overflowing device can realize the continuous replenishment of fresh water in the final-stage rinsing bath, the cascade control of the rinsing bath and the step-by-step reverse water replenishing, and the dynamic balance of the water replenishing, reverse water replenishing and overflowing of the whole rinsing system is ensured through the overflow system of the first-stage rinsing bath; ensuring that the solvent content in the rinsing bath is kept at a very low level.
(4) The carbon fiber precursor washing device has the characteristic of multi-technology integration, effectively strengthens the washing effect, and reduces the energy consumption of a heating system; the investment cost of equipment and space increased due to the shortage of the length and the space of the water washing tank is reduced, the device can be directly transformed on the existing spinning equipment, and the advantages are obvious.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, 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 invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural view of a carbon fiber precursor water washing device in an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of the interior of the hub according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a fixing base in an embodiment of the invention.
The designations in the above figures represent respectively: 1-first-stage water washing tank, 2-second-stage water washing tank, 3-first-stage drawing roller, 4-second-stage drawing roller, 5-third-stage drawing roller, 6-floral whorl, 7-first-stage circulating pump, 8-first-stage internal circulating circuit, 9-second-stage circulating pump, 10-second-stage internal circulating circuit, 11-first-stage water supplementing circuit, 12-first-stage flowmeter, 15-second-stage water supplementing circuit, 16-second-stage flowmeter, 19-overflow circuit, 20-first flowmeter, 21-water receiving funnel, 22-first-stage spraying circuit, 23-second-stage spraying circuit, 24-disc, 25-round bar, 26-ceramic bearing, 27-rotating shaft, 28-panel, 29-bottom plate, 30-fixing screw, 31-nut, 13, 14, 17, 18-auxiliary valve.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. 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 invention 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 exemplary embodiments according to the invention. 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.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate that the directions of movement are consistent with those of the drawings, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element needs to have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As mentioned above, the prior art has the problems that the water washing device is complicated and the requirements of the water washing process cannot be met. Therefore, the invention provides a carbon fiber precursor washing device, which is further described with reference to the drawings and the detailed description of the specification.
First embodimentReferring to fig. 1, a carbon fiber precursor washing device designed by the present invention is illustrated, which comprises a primary washing tank 1, a secondary washing tank 2, a primary drafting roller 3, a secondary drafting roller 4, a tertiary drafting roller 5, a pattern wheel 6, and a primary internal circulation systemThe system comprises a system, a secondary internal circulation system, a reverse water replenishing system, a new water replenishing system, an overflow system, a primary spraying system and a secondary spraying system.
A primary drawing roller 3, a secondary drawing roller 4 and a tertiary drawing roller 5 are respectively arranged at two ends of the primary washing tank 1 and the secondary washing tank 2, and the secondary drawing roller 4 is positioned between the primary washing tank 1 and the secondary washing tank 2; the first-stage rinsing bath 1 and the second-stage rinsing bath 2 are both provided with a floral whorl 6. And the primary rinsing bath and the secondary rinsing bath are internally provided with heating coils and a temperature self-control system, so that rinsing of the protofilament in the conventional sense is realized. The first-stage drafting roller, the second-stage drafting roller and the third-stage drafting roller are all 5-roller drafting machines, the driving roller is made of SS316 stainless steel, and the surface of the driving roller is subjected to mirror polishing treatment, so that the washing time and the drafting tension of the raw filament bundle in a washing tank are controlled.
The first-stage internal circulation system comprises a first-stage circulating pump 7 and a first-stage internal circulation pipeline 8, the first-stage internal circulation pipeline 8 is separated from the outlet of the first-stage circulating pump 7, and the self-circulation of the washing liquid in the first-stage rinsing bath is realized.
The second-stage internal circulation system comprises a second-stage circulating pump 9 and a second-stage internal circulation pipeline 10, and the second-stage internal circulation pipeline 10 is separated from the outlet of the circulating pump 9, so that the self-circulation of the washing liquid in the second-stage rinsing bath is realized.
The reverse water replenishing system comprises a secondary circulating pump 9, a primary water replenishing pipeline 11, a primary flowmeter 12 and a pipeline, wherein the primary flowmeter 12 is installed on the primary water replenishing pipeline 11, the primary rinsing bath and the secondary rinsing bath are connected through the pipeline, water in the secondary rinsing bath enters the primary rinsing bath after being provided with power by the secondary circulating pump, enters the primary flowmeter for metering, and then enters the primary rinsing bath to complete the reverse water replenishing process; the process is divided and regulated by the auxiliary valves 13 and 14.
The new water supplementing system comprises a secondary water supplementing pipeline 15 and a secondary flowmeter 16, the secondary flowmeter 16 is installed on the secondary water supplementing pipeline 15, deionized purified water provided from the outside is metered by the secondary flowmeter 16 and then enters a secondary rinsing bath to realize a water supplementing process, and the process is regulated and controlled through auxiliary valves 17 and 18. The water supplement amount of the second-stage rinsing bath and the reverse water supplement amount of the first-stage rinsing bath are consistent with the overflow amount of the first-stage rinsing bath (5), dynamic balance is realized, the solvent content in the rinsing bath is kept at an extremely low level, and the rinsing effect is enhanced.
The overflow system comprises an overflow pipeline 19, a first flow meter 20 and a water receiving funnel 21, wherein the water inlet end of the overflow pipeline 15 extends into the first-stage rinsing bath 1, the first flow meter 20 is installed on the overflow pipeline 15, the water outlet end of the overflow pipeline 15 is arranged outside the first-stage rinsing bath, and the water receiving funnel 21 is positioned below the water outlet end of the overflow pipeline. The reverse make-up water quantity flows into the water receiving funnel after being measured by the first flowmeter 20 and enters the sewage recovery pipeline system. The dynamic balance of reverse water supplement and overflow is realized, the tows are kept in a water washing process, and the solvent residue is in a controllable process range.
The primary spraying system comprises a primary spraying pipeline 22 and a primary circulating pump 7, and the primary circulating pump 7 provides spraying power; the second-stage spraying system comprises a second-stage spraying pipeline 23 and a second-stage circulating pump 9, and the second-stage circulating pump provides spraying power.
It is understood that on the basis of the first embodiment, the following technical solutions including but not limited to the following may be derived to solve different technical problems and achieve different purposes of the invention, and specific examples are as follows:
second embodimentThe water outlet end of the first-stage water supplementing pipeline 11 faces the driving roller of the second-stage drafting roller 4 in the first-stage rinsing bath 1, the water outlet end of the second-stage water supplementing pipeline 15 faces the driving roller of the third-stage drafting roller 5 in the first-stage rinsing bath 1, and therefore the design is favorable for further removing residual solvent on the protofilament. The water outlet end of the overflow pipeline 15 faces the driving roller which is positioned outside the primary rinsing bath 1 by the primary drawing roller 3, so that residual solvent on the protofilaments can be removed in advance by using waste water needing to be discharged.
Third embodimentThe one-level water replenishing pipeline 11 goes out water end, 15 water end departments of second grade water replenishing pipeline all are provided with the shower nozzle, spray the new water of will mending through the shower nozzle on being about to output the precursor of corresponding wash bowl 1, help further getting rid of the residual solvent on the precursor. The 15 water outlet ends of the overflow pipelines are provided with spray heads, and waste water needing to be discharged is sprayed in advance through the spray heads to be about to enterThe raw filaments are put into the primary washing tank 1 to help remove the residual solvent on the raw filaments in advance.
Fourth embodimentReferring to fig. 2, the hub 6 is composed of a disc 24, a round bar 25, a ceramic bearing 26 and a rotating shaft 27; the 10 round rods 25 are uniformly fixed between the two disks 24 to form the circular outer surface of the flower wheel, and the rotating shaft 27 passes through the central axis of the disks and is connected with the disks 25 through the ceramic bearing 26 to form a squirrel-cage-shaped structure. The material of disc, pole, pivot 27 is 316 stainless steel, and the polishing treatment is done on the surface of pole, reaches the mirror surface precision, ceramic bearing 26 adopts the full ceramic bearing of silicon nitride, and it has characteristics such as high temperature resistant, corrosion-resistant, wear-resisting, oil-free self-lubricating, high rotational speed. The washed silk is extruded by the surface of the circular bar of the spinning wheel, so that the washed silk is opened and widened, and the washing effect is stronger. The round bar 25 plays the role of extruding, splitting and expanding the washing silk; the flower wheel with the squirrel-cage structure rotates under the traction of the washing silk to disturb water flow, so that the washing effect is enhanced.
Fifth embodimentReferring to fig. 3, the washing machine further comprises a fixed seat of the flower wheel 6, which is composed of two side panels 28, a bottom panel 29, a fixing screw 30 and a fastening nut 31, wherein the two side panels 28 are fixed at two ends of the bottom panel 29 to form a groove-shaped structure, the bottom panel 29 is fixed with a bottom distribution plate of the washing tank through the fixing screw 30 and the fastening nut 31, and a rotating shaft 27 of the flower wheel is installed on the two side panels. The angle of the flower wheel along with the fixed seat is adjustable and controllable during multi-pass reciprocating washing of the washing threads under the action of the fixed screw and the fastening nut.
Sixth embodimentTaking 3K carbon fiber precursor washing as an example, the application of the carbon fiber precursor washing device designed in the invention is exemplified, wherein the circulating pump is a SS304 stainless steel chemical centrifugal pump, the temperature resistance of the pump body is less than or equal to 120 ℃, the lift is 8 m, and the power of the motor is 0.55 kw. The first-stage circulating pump realizes the functions of self-circulation, spraying, rinsing and overflow of water in the first-stage rinsing tank; the two-stage circulating pump realizes the functions of self-circulation, spraying, rinsing and reverse water replenishing of water in the two-stage rinsing bath. The specific process is as follows:
application 1: setting the spinning speed to 150 m/min; an eight-stage rinsing bath is used for cascade control; each rinsing tank is additionally provided with a first-stage centrifugal pump to realize continuous self-circulation, spraying, water replenishing and overflowing of the rinsing tanks, and the flow rate is set to be 30L/H; the temperature of the eight-stage rinsing bath is 40-80 ℃, and the temperature is distributed in a gradient way. The primary fiber in one bath sequentially enters a first-stage to an eight-stage rinsing bath for water washing under the traction of an eight-stage drawing roller. And (4) taking the precursor for testing, wherein the residual amount of the solvent is 450 PPM.
Application 2: setting the spinning speed to 150 m/min; an eight-stage rinsing bath is used for cascade control; each rinsing tank is additionally provided with two stages of water-washing floral wheels; each rinsing tank is additionally provided with a first-stage centrifugal pump to realize continuous self-circulation, spraying, water flow supplement and overflow of the rinsing tanks, and the flow rate is set to be 30L/H; the temperature of the eight-stage rinsing bath is 40-80 ℃, and the temperature is distributed in a gradient way. The primary fiber in one bath sequentially enters first-stage to eight-stage rinsing tanks under the traction of eight-stage drafting rollers, and rinsing wheels of each rinsing tank through which the rinsing silk passes reciprocate for 3 times. And (4) taking the precursor for testing, wherein the residual amount of the solvent is 98 PPM.
Application 3: setting the spinning speed to 150 m/min; an eight-stage rinsing bath is used for cascade control; each rinsing tank is additionally provided with two stages of water-washing floral wheels; each rinsing tank is additionally provided with a first-stage centrifugal pump to realize continuous self-circulation, spraying, water flow supplement and overflow of the rinsing tanks, and the flow rate is set to be 60L/H; the temperature of the eight-stage rinsing bath is 40-80 ℃, and the temperature is distributed in a gradient way. The primary fiber in one bath sequentially enters first-stage to eight-stage rinsing tanks under the traction of eight-stage drafting rollers, and rinsing wheels of each rinsing tank through which the rinsing silk passes reciprocate for 3 times. And (4) taking the precursor for testing, wherein the residual amount of the solvent is 43 PPM.
As can be seen, the residual amount of the precursor solvent is low, and the washing requirement is completely met.
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. A carbon fiber precursor washing device is characterized by comprising a primary washing tank, a secondary washing tank, a primary drawing roller, a secondary drawing roller, a tertiary drawing roller, a spinning wheel, a primary internal circulation system, a secondary internal circulation system, a reverse water replenishing system, a new water replenishing system, an overflow system, a primary spraying system and a secondary spraying system; a first-stage drafting roller, a second-stage drafting roller and a third-stage drafting roller are respectively arranged at two ends of the first-stage rinsing bath and the second-stage rinsing bath, and the second-stage drafting roller is positioned between the first-stage rinsing bath and the second-stage rinsing bath; the first-stage rinsing bath and the second-stage rinsing bath are both provided with a floral whorl; the first-stage internal circulation system comprises a first-stage circulating pump and a first-stage internal circulation pipeline, and the first-stage internal circulation pipeline is separated from the outlet of the first-stage circulating pump to realize the self-circulation of the washing liquid in the first-stage rinsing bath; the second-stage internal circulation system comprises a second-stage circulating pump and a second-stage internal circulation pipeline, and the second-stage internal circulation pipeline is separated from the outlet of the circulating pump, so that the self-circulation of the washing liquid in the second-stage rinsing bath is realized;
the reverse water replenishing system comprises a second-stage circulating pump, a first-stage water replenishing pipeline, a first-stage flowmeter and a pipeline, wherein the first-stage flowmeter is arranged on the first-stage water replenishing pipeline, the first-stage rinsing bath and the second-stage rinsing bath are connected through the pipeline, and the second-stage circulating pump provides power; the new water supplementing system comprises a secondary water supplementing pipeline and a secondary flowmeter, and the secondary flowmeter is arranged on the secondary water supplementing pipeline;
the overflow system comprises an overflow pipeline, a first flowmeter and a water receiving funnel, wherein the water inlet end of the overflow pipeline extends into the first-stage rinsing bath, the first flowmeter is arranged on the overflow pipeline, the water outlet end of the overflow pipeline is arranged outside the first-stage rinsing bath, and the water receiving funnel is positioned below the water outlet end of the overflow pipeline; the primary spraying system comprises a primary spraying pipeline and a primary circulating pump, and the primary circulating pump provides spraying power; the second-stage spraying system comprises a second-stage spraying pipeline and a second-stage circulating pump, and the second-stage circulating pump provides spraying power.
2. The carbon fiber precursor water washing device as claimed in claim 1, wherein the hub is composed of a disc, a round bar, a ceramic bearing and a rotating shaft; the round bar is fixed between the two disks to form the outer surface of the spline wheel, and the rotating shaft passes through the central axis of the disks and is connected with the disks through ceramic bearings to form a squirrel-cage-shaped structure;
preferably, the disc, the round rod and the rotating shaft are all made of 316 stainless steel, and the surface of the round rod is polished to achieve mirror surface precision;
preferably, the number of the round rods is 8, and the round rods are uniformly distributed on the disc;
preferably, the ceramic bearing is a silicon nitride all-ceramic bearing;
preferably, 2-3 floral whorls are additionally arranged in each rinsing tank according to the rinsing process requirement.
3. The carbon fiber precursor washing device as claimed in claim 2, further comprising a fixing base of the flower wheel, which is composed of two side panels, a bottom panel, a fixing screw and a fastening nut, wherein the two side panels are fixed at two ends of the bottom panel to form a groove-shaped structure, the bottom panel is fixed with the bottom distribution panel of the washing tank through the fixing screw and the fastening nut, and a rotating shaft of the flower wheel is installed on the two side panels.
4. The carbon fiber precursor washing device as claimed in claim 1, wherein the water outlet end of the primary water replenishing pipeline faces the secondary drawing roller and is positioned on the driving roller in the primary washing tank.
5. The carbon fiber precursor water washing device as claimed in claim 1, wherein the water outlet end of the secondary water replenishing pipeline faces the driving roller of the tertiary drawing roller in the primary water washing tank.
6. The carbon fiber precursor washing device as claimed in claim 1, wherein the water outlet end of the overflow pipeline faces a driving roller which is positioned outside the primary washing tank by the primary drawing roller.
7. The carbon fiber precursor washing device as claimed in claim 1, wherein the water outlet ends of the primary water supply pipeline and the secondary water supply pipeline are provided with spray heads; preferably, the water outlet ends of the overflow pipelines are provided with spray heads.
8. The carbon fiber precursor washing device as claimed in any one of claims 1 to 7, wherein heating coils and a temperature self-control system are built in the primary washing tank and the secondary washing tank.
9. The carbon fiber precursor washing device according to any one of claims 1 to 7, wherein the primary drawing roller, the secondary drawing roller and the tertiary drawing roller are roller drawing machines, and preferably, the driving roller is made of SS316 stainless steel and has a mirror-finished surface.
10. The carbon fiber precursor washing device as claimed in any one of claims 1 to 7, wherein N-stage washing baths are added according to the washing process requirements, each stage of washing bath is controlled in cascade, the later stage washing bath is used for metering and replenishing water to the earlier stage washing bath, and finally the overflow is metered through the first stage washing bath.
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| CN202010092836.4A CN111139543A (en) | 2020-02-14 | 2020-02-14 | Carbon fiber precursor washing device |
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| CN202010092836.4A CN111139543A (en) | 2020-02-14 | 2020-02-14 | Carbon fiber precursor washing device |
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| CN111139543A true CN111139543A (en) | 2020-05-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044990A (en) * | 2022-07-26 | 2022-09-13 | 荣成碳纤维科技有限公司 | Multistage spreading efficient water washing method and device for carbon fiber precursors |
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2020
- 2020-02-14 CN CN202010092836.4A patent/CN111139543A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044990A (en) * | 2022-07-26 | 2022-09-13 | 荣成碳纤维科技有限公司 | Multistage spreading efficient water washing method and device for carbon fiber precursors |
| CN115044990B (en) * | 2022-07-26 | 2024-03-22 | 山东永成新材料有限公司 | Multi-stage expanding efficient washing method and device for carbon fiber precursor |
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