CN110983542A - Polyimide fiber filament heat treatment device - Google Patents
Polyimide fiber filament heat treatment device Download PDFInfo
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- CN110983542A CN110983542A CN201911355672.3A CN201911355672A CN110983542A CN 110983542 A CN110983542 A CN 110983542A CN 201911355672 A CN201911355672 A CN 201911355672A CN 110983542 A CN110983542 A CN 110983542A
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- heat treatment
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
- D02J13/008—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass with elimination of fumes
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/06—Carrying-off electrostatic charges by means of ionising radiation
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
A polyimide fiber filament heat treatment device relates to the technical field of spinning machinery, and comprises a furnace body, wherein a fiber heat treatment channel is formed between a feed inlet and a discharge outlet; the upper side and the lower side of the fiber heat treatment channel are both fixedly provided with splitter plates, the splitter plates are provided with overflowing holes, the working cavity is internally provided with an air guide housing, the air guide housing and the inner wall of the furnace body are arranged at intervals to form an air guide channel, and air heating devices are arranged in the air guide channels on the two sides; the top of the air guide housing is provided with an air exhaust mechanism for enabling hot air to generate circular flow in the air guide channel and the air guide housing; the negative ion humidifying device is arranged in the air guide channel below the air guide cover, and the static electricity eliminating device is arranged at the discharge port of the furnace body. The invention can play a role in balancing the temperature in the furnace body, can eliminate static electricity through the negative ion humidifying device and the static electricity eliminating device, and has the advantages of high temperature control precision, uniform heating, capability of removing static electricity on fibers and the like.
Description
Technical Field
The invention relates to the technical field of spinning machinery, in particular to a polyimide fiber filament heat treatment device.
Background
The polyimide fiber is also called aromatic imide fiber, and is fiber containing aromatic imide in the molecular chain, and the fiber is mainly used for high-temperature dust filter material, electric insulating material, various high-temperature resistant flame-retardant protective clothing, parachutes, honeycomb structures, hot air material, composite material reinforcing agent and anti-radiation material. The production process of the polyimide fiber is divided into two parts, wherein the first step is to perform wet or dry spinning on the concentrated solution of the polyamic acid to obtain the polyamic acid fiber, and the second step is to perform chemical cyclization or thermal cyclization on the polyamic acid fiber spun in the first step to obtain the polyimide fiber, so the two-step method is called. Use the high temperature passageway to handle polyimide short fiber among the prior art, the high temperature passageway has the defect that the accuse temperature precision is poor, and polyimide short fiber easily produces static after the high temperature passageway is handled, and this can lead to polyimide short fiber surface to produce a large amount of broken silks, and then influences follow-up polyimide fiber high-strength high-modulus filament production.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a polyimide fiber filament heat treatment device which is high in temperature control precision, uniform in heating and capable of removing static electricity on fibers.
The technical problem to be solved by the present invention is achieved by the following technical means. The invention relates to a polyimide fiber filament heat treatment device, which is characterized in that: the fiber heat treatment furnace comprises a furnace body, wherein a working cavity is arranged in the furnace body, a feed inlet and a discharge outlet which are communicated with the working cavity are respectively arranged on the furnace body at two ends of the working cavity, and a fiber heat treatment channel is formed between the feed inlet and the discharge outlet;
the upper side and the lower side of the fiber heat treatment channel are both fixedly provided with a splitter plate, the splitter plate is provided with a plurality of overflowing holes which are over against the fiber heat treatment channel, a wind guide housing matched with the splitter plate is arranged in the working cavity, the wind guide housing is covered on the two sides and the upper side of the splitter plate, the two ends of the wind guide housing are fixedly connected with the furnace body, a wind guide channel is formed between the wind guide housing and the inner wall of the furnace body at intervals, and air heating devices are arranged in the wind guide channels on the two sides;
the top of the air guide housing is provided with an air exhaust mechanism, an air inlet of the air exhaust mechanism is communicated with the inside of the air guide housing, an air outlet of the air exhaust mechanism is communicated with the air guide channel, and the air exhaust mechanism is used for enabling hot air to circularly flow in the air guide channel and the air guide housing;
the negative ion humidifying device is arranged in the air guide channel below the air guide cover, and the static electricity eliminating device is arranged at the discharge port of the furnace body.
The static electricity eliminating device can be selected from an ion bar static electricity eliminator, an anti-static ion wind bar, an ion wind gun, an ion wind curtain and the like.
The furnace body can be provided with a thermocouple temperature measuring and controlling device, the temperature measuring end of the thermocouple temperature measuring and controlling device is arranged in the fiber heat treatment channel, the thermocouple temperature measuring and controlling device is connected with the air heating device through a circuit, and the thermocouple temperature measuring and controlling device collects temperature signals to control the air heating device.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: the overflowing holes are gradually arranged from the two sides of the flow distribution plate to the middle in a gradually increasing mode.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: the bottom of the working cavity is fixedly provided with a partition plate positioned below the air guide housing, the partition plate is arranged along the central line direction of the flow distribution plate, the top of the partition plate and the bottom of the air guide housing are arranged at the same height, and negative ion humidifying devices are arranged on two sides of the partition plate.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: the air heating device is a radiant tube heater which is inserted in the air guide channel between the side wall of the air guide cover shell and the inner wall of the furnace body. A plurality of radiant tube heaters can be arranged in the air guide channel at intervals on each side to achieve the effect of uniform heating.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: the air exhaust mechanism is a heated air circulation fan, a driving motor matched with the heated air circulation fan is installed on the outer wall of the furnace body, and the driving motor is connected with the heated air circulation fan through a transmission shaft for transmission.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: the hot air circulating fans are arranged in two numbers, and the two hot air circulating fans are symmetrically arranged on the air guide housing.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: and the top of the air guide housing between the two hot air circulating fans is fixedly connected with an exhaust pipe, and the exhaust pipe penetrates out of the furnace body upwards and is communicated with the atmosphere for exhausting.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: and the overflowing holes on the two shunting plates are arranged in an up-and-down symmetrical manner.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: the flow distribution plate is fixedly connected with the side wall of the wind scooper shell through a support.
The above-mentioned polyimide fiber filament heat treatment apparatus of the present invention further preferably has a technical scheme or technical features that: the furnace body is a horizontal furnace body, and the working cavity is transversely arranged in the horizontal furnace body.
Compared with the prior art, the invention has the following beneficial effects:
when the device is used, the polyimide fiber filaments to be treated are pulled by the devices arranged at the two ends of the furnace body, so that the polyimide fiber filaments pass through the fiber heat treatment channel for heat treatment; at the moment, an air heating device in the air guide channel heats air, a hot air circulating fan at the top of the air guide housing is started, hot air circularly flows in the air guide channel, and hot air is uniformly blown to the surface of the polyimide fiber filament along overflowing holes on the separating plate, so that the polyimide fiber filament is subjected to heat treatment; in the heat treatment process of the polyimide fiber filament, tail gas generated in the drawing process of the polyimide fiber can be discharged by the exhaust pipe, and the tail gas is discharged for additional treatment; in the heat treatment process of the polyimide fibers, the negative ion humidifying device is started to generate negative ions, and the negative ions are carried by hot air and blown onto the polyimide fibers, so that the effect of eliminating static electricity is achieved; after the heat treatment of the polyimide fibers is finished, the static electricity eliminating device arranged at the discharge port further eliminates static electricity; according to the invention, the air heating device is used for heating air, and hot air circularly flows in the furnace body through the air guide housing and the hot air circulating fan arranged at the top of the air guide housing, so that the effect of balancing the temperature in the furnace body is achieved, the temperature distribution in the furnace body is more balanced, and the heat treatment uniformity of the polyimide fiber filaments is improved; the negative ion humidifying device is matched with the static eliminating device to eliminate the static on the surface of the polyimide fiber filament; in conclusion, the invention has the advantages of high temperature control precision, uniform heating, capability of removing static electricity on the fiber and the like.
Drawings
FIG. 1 is a side elevation cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of a front view of the present invention;
in the figure, 1 is a furnace body, 2 is a feeding hole, 3 is a discharging hole, 4 is a flow distribution plate, 5 is an overflowing hole, 6 is a wind guide cover shell, 7 is an air heating device, 8 is an anion humidifying device, 9 is an electrostatic eliminating device, 10 is a thermocouple temperature measuring and controlling device, 11 is a partition plate, 12 is a hot air circulating fan, 13 is a driving motor, and 14 is an exhaust pipe.
Detailed Description
The following further describes particular embodiments of the present invention to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
A polyimide fiber filament heat treatment device, refer to fig. 1 and fig. 2, comprises a furnace body 1, a working chamber is arranged in the furnace body 1, a feed inlet 2 and a discharge outlet 3 communicated with the working chamber are respectively arranged on the furnace body 1 at two ends of the working chamber, and a fiber heat treatment channel is formed between the feed inlet 2 and the discharge outlet 3; and the furnace body 1 is provided with a heat insulation layer.
The upper side and the lower side of the fiber heat treatment channel are both fixedly provided with a splitter plate 4, the splitter plate 4 is provided with a plurality of overflowing holes 5 which are over against the fiber heat treatment channel, a wind guide housing 6 which is matched with the splitter plate 4 is arranged in the working cavity, the wind guide housing 6 is arranged at the two sides and above the splitter plate 4, the two ends of the wind guide housing 6 are fixedly connected with the furnace body 1, the wind guide housing 6 and the inner wall of the furnace body 1 are arranged at intervals to form a wind guide channel, and the wind guide channels at the two sides are both internally provided with air heating devices 7;
an air exhaust mechanism is arranged at the top of the air guide housing 6, an air inlet of the air exhaust mechanism is communicated with the inside of the air guide housing 6, an air outlet of the air exhaust mechanism is communicated with the air guide channel, and the air exhaust mechanism is used for enabling hot air to circularly flow in the air guide channel and the air guide housing 6;
an air guide channel positioned below the air guide housing 6 is provided with a negative ion humidifying device 8, and a discharge port of the furnace body 1 is provided with a static electricity eliminating device 9.
The static elimination device 9 can be an ion air curtain device; the negative ion humidifying device 8 is started to generate negative ions, and the negative ions are carried by hot air and blown onto the polyimide fibers, so that the effect of eliminating static electricity is achieved. When the polyimide fiber filament passes through the discharge port, the static electricity eliminating device 9 arranged at the discharge port further eliminates the static electricity on the polyimide fiber filament.
A thermocouple temperature measuring and controlling device 10 is installed on the furnace body 1, the temperature measuring end of the thermocouple temperature measuring and controlling device 10 is arranged in the fiber heat treatment channel, the thermocouple temperature measuring and controlling device 10 is connected with the air heating device 7 through a circuit, and the thermocouple temperature measuring and controlling device 10 collects temperature signals to control the air heating device 7.
The overflowing holes 5 are gradually arranged from two sides of the flow distribution plate 4 to the middle in a gradually increasing mode. So that the polyimide fiber filament can be fully contacted with hot air when passing through the middle part of the furnace body 1, and further the full heat treatment is obtained.
The bottom of the working cavity is fixedly provided with a partition plate 11 positioned below the air guide housing 6, the partition plate 11 is arranged along the central line direction of the flow distribution plate 4, the top of the partition plate 11 and the bottom of the air guide housing 6 are arranged at the same height, and the two sides of the partition plate 11 are both provided with a negative ion humidifying device 8.
The air heating device 7 is a radiant tube heater which is inserted in an air guide channel between the side wall of the air guide housing 6 and the inner wall of the furnace body 1.
The air extracting mechanism is a heated air circulating fan 12, a driving motor 13 matched with the heated air circulating fan 12 is installed on the outer wall of the furnace body 1, and the driving motor 13 is connected with the heated air circulating fan 12 through a transmission shaft for transmission.
The number of the hot air circulating fans 12 is two, and the two hot air circulating fans 12 are symmetrically arranged on the air guide housing 6.
An exhaust pipe 14 is fixedly connected to the top of the air guide housing 6 between the two hot air circulating fans 12, and the exhaust pipe 14 penetrates out of the furnace body 1 upwards and is communicated with the atmosphere for exhausting.
And the overflowing holes 5 on the two shunting plates 4 are symmetrically arranged up and down.
The flow distribution plate 4 is fixedly connected with the side wall of the air guide housing 6 through a support.
The furnace body 1 is a horizontal furnace body, and the working cavity is transversely arranged in the horizontal furnace body.
When in use, the devices arranged at the two ends of the furnace body 1 are utilized to pull the polyimide fiber filaments to be treated, so that the polyimide fiber filaments pass through the fiber heat treatment channel for heat treatment; at the moment, the air heating device 7 in the air guide channel heats air, and the hot air circulating fan 12 at the top of the air guide housing 6 is started to make hot air circularly flow in the air guide channel, and hot air is uniformly blown to the surface of the polyimide fiber filament along the overflowing holes 5 on the separating plate, so that the polyimide fiber filament is subjected to heat treatment; in the heat treatment process of the polyimide fiber filament, tail gas generated in the drawing process of the polyimide fiber can be discharged by the exhaust pipe 14, and the tail gas is discharged for additional treatment; in the heat treatment process of the polyimide fibers, the negative ion humidifying device 8 is started to generate negative ions, and the negative ions are carried by hot air and blown onto the polyimide fibers, so that the effect of eliminating static electricity is achieved; and the polyimide fiber is further electrostatically eliminated by an electrostatic eliminating device 9 provided at the discharge port after the heat treatment is completed.
Claims (10)
1. A polyimide fiber filament heat treatment device is characterized in that: the fiber heat treatment furnace comprises a furnace body, wherein a working cavity is arranged in the furnace body, a feed inlet and a discharge outlet which are communicated with the working cavity are respectively arranged on the furnace body at two ends of the working cavity, and a fiber heat treatment channel is formed between the feed inlet and the discharge outlet;
the upper side and the lower side of the fiber heat treatment channel are both fixedly provided with a splitter plate, the splitter plate is provided with a plurality of overflowing holes which are over against the fiber heat treatment channel, a wind guide housing matched with the splitter plate is arranged in the working cavity, the wind guide housing is covered on the two sides and the upper side of the splitter plate, the two ends of the wind guide housing are fixedly connected with the furnace body, a wind guide channel is formed between the wind guide housing and the inner wall of the furnace body at intervals, and air heating devices are arranged in the wind guide channels on the two sides;
the top of the air guide housing is provided with an air exhaust mechanism, an air inlet of the air exhaust mechanism is communicated with the inside of the air guide housing, an air outlet of the air exhaust mechanism is communicated with the air guide channel, and the air exhaust mechanism is used for enabling hot air to circularly flow in the air guide channel and the air guide housing;
the negative ion humidifying device is arranged in the air guide channel below the air guide cover, and the static electricity eliminating device is arranged at the discharge port of the furnace body.
2. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: the overflowing holes are gradually arranged from the two sides of the flow distribution plate to the middle in a gradually increasing mode.
3. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: the bottom of the working cavity is fixedly provided with a partition plate positioned below the air guide housing, the partition plate is arranged along the central line direction of the flow distribution plate, the top of the partition plate and the bottom of the air guide housing are arranged at the same height, and negative ion humidifying devices are arranged on two sides of the partition plate.
4. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: the air heating device is a radiant tube heater which is inserted in the air guide channel between the side wall of the air guide cover shell and the inner wall of the furnace body.
5. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: the air exhaust mechanism is a heated air circulation fan, a driving motor matched with the heated air circulation fan is installed on the outer wall of the furnace body, and the driving motor is connected with the heated air circulation fan through a transmission shaft for transmission.
6. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: the hot air circulating fans are arranged in two numbers, and the two hot air circulating fans are symmetrically arranged on the air guide housing.
7. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: and the top of the air guide housing between the two hot air circulating fans is fixedly connected with an exhaust pipe, and the exhaust pipe penetrates out of the furnace body upwards and is communicated with the atmosphere for exhausting.
8. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: and the overflowing holes on the two shunting plates are arranged in an up-and-down symmetrical manner.
9. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: the flow distribution plate is fixedly connected with the side wall of the wind scooper shell through a support.
10. The polyimide fiber filament heat treatment device according to claim 1, characterized in that: the furnace body is a horizontal furnace body, and the working cavity is transversely arranged in the horizontal furnace body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355672.3A CN110983542A (en) | 2019-12-25 | 2019-12-25 | Polyimide fiber filament heat treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911355672.3A CN110983542A (en) | 2019-12-25 | 2019-12-25 | Polyimide fiber filament heat treatment device |
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| Publication Number | Publication Date |
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| CN110983542A true CN110983542A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911355672.3A Pending CN110983542A (en) | 2019-12-25 | 2019-12-25 | Polyimide fiber filament heat treatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940418A (en) * | 2020-06-19 | 2020-11-17 | 中国兵器工业第五九研究所 | Removing device for organic matters of porous material |
| CN115182077A (en) * | 2022-07-28 | 2022-10-14 | 中国科学院苏州纳米技术与纳米仿生研究所 | High-stability carbon nanotube fiber continuous reinforcement device, system and application thereof |
-
2019
- 2019-12-25 CN CN201911355672.3A patent/CN110983542A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111940418A (en) * | 2020-06-19 | 2020-11-17 | 中国兵器工业第五九研究所 | Removing device for organic matters of porous material |
| CN115182077A (en) * | 2022-07-28 | 2022-10-14 | 中国科学院苏州纳米技术与纳米仿生研究所 | High-stability carbon nanotube fiber continuous reinforcement device, system and application thereof |
| CN115182077B (en) * | 2022-07-28 | 2024-05-24 | 中国科学院苏州纳米技术与纳米仿生研究所 | High-stability carbon nano tube fiber continuous strengthening device, system and application thereof |
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