CN216473596U

CN216473596U - Be used for carbon fibre precursor spinning coagulating bath device

Info

Publication number: CN216473596U
Application number: CN202122714503.3U
Authority: CN
Inventors: 仇兰刚
Original assignee: Jilin Baojing Carbon Material Co ltd
Current assignee: Jilin Baojing Carbon Material Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-05-10
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to a coagulation bath device for spinning carbon fiber precursors, which comprises a coagulation bath box body, an arc-shaped liquid separation plate, a liquid inlet pipe and a solid arc-shaped choke, wherein the coagulation bath box body consists of an upper rectangular box body and a lower square conical box body, the arc-shaped liquid separation plate is in a circular arch shape and is fixedly connected in the rectangular box body, a plurality of round holes are uniformly distributed on the surface of the arc-shaped liquid separation plate, the liquid inlet pipe is communicated with the bottom of the square conical box body, and the solid arc-shaped choke is positioned in the square conical box body and is fixedly connected right above an outlet of the liquid inlet pipe. The performance of the precursor is improved, and a powerful foundation is provided for the subsequent production of the carbon filament.

Description

Be used for carbon fibre precursor spinning coagulating bath device

Technical Field

The utility model relates to the technical field of carbon fiber spinning, in particular to a coagulating bath device for carbon fiber precursor spinning.

Background

At present, the demand for research, development and production of carbon fiber in China is high, the number of enterprises is increased, and the development trend is encouraging, but because the development of the carbon fiber industry in China is slow, the high-performance carbon fiber in China has certain gap in quality and quantity compared with that in China, and the demand is far from being met. Therefore, the research and development of the high-performance carbon fiber material of China are urgent.

The quality of carbon fiber carbon filaments is strictly limited by the quality of precursor, so that high-quality carbon filaments are produced, and precursor with good performance is essential. In the spinning, solidifying and forming process, the quality of the protofilament is seriously influenced by the temperature uniformity degree, the concentration uniformity degree, the impact generated by the flowing of the solidifying liquid, broken filament entanglement and other problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a coagulation bath device for spinning carbon fiber precursors, which provides stable coagulation liquid concentration and temperature conditions in the coagulation forming process, reduces the flowing impact force of the coagulation bath, can effectively improve the probability of poor-quality filaments generated by poor coagulation forming effect when the concentration and temperature conditions of the coagulation liquid are different, effectively stabilizes the flow of the coagulation liquid, reduces the impact on the surface of the precursors generated by the fluctuation of the coagulation liquid to form grooves and special shapes, finally ensures the quality of the solidified precursors, improves the performance of the precursors, and provides a powerful foundation for the subsequent production of the carbon filaments.

In order to achieve the above purpose, the following technical scheme is provided:

the utility model provides a be used for carbon fiber precursor spinning coagulating bath device, includes coagulating bath box, arc branch liquid board, feed liquor pipe, solid arc bluff body, the coagulating bath box comprises rectangle box on upper portion and the square cone box of lower part, the arc divides the liquid board to be dome shape and its fixed connection in the rectangle box, and the arc divides the surface equipartition of liquid board to have a plurality of round holes, the bottom of feed liquor pipe and square cone box switches on, solid arc bluff body is located the square cone box to fixed connection is directly over the export of feed liquor pipe.

Preferably, the top heights of the left side surface and the right side surface of the rectangular box body are higher than those of the front side surface and the rear side surface, the tops of the front side surface and the rear side surface are respectively provided with an overflow groove, and the height of one end of each overflow groove is higher than that of the other end of each overflow groove.

Preferably, the left and right edges of the arc-shaped liquid separation plate are fixedly connected with the two edges at the joint of the rectangular box body and the square conical box body, and the lengths of the edges are the same.

Preferably, the solid arc-shaped bluff body comprises an upper sphere, a lower sphere and a support, the upper sphere is fixedly connected with the lower sphere, the support consists of four pillars, one ends of the four pillars are respectively fixedly connected with four edges of the bottom of the square conical box body, and the other ends of the four pillars are fixedly connected with the edges formed between the upper sphere and the lower sphere.

Preferably, the diameter of the upper sphere is larger than that of the lower sphere, and the height of the upper sphere is smaller than that of the lower sphere.

The utility model has the beneficial effects that:

1. when the device is used, the flowing direction of the integral coagulating bath is from bottom to top, and the broken filaments float according to the flowing direction of the liquid, so that the broken filaments are convenient to observe.

2. The solidification liquid overflows and flows out from two sides of the top of the solidification bath box body, the dispersion is uniform, and the solidification forming silk threads cannot change shapes due to unidirectional stress of the flowing direction of the liquid.

3. The distance from the highest point of the arc-shaped liquid separation plate to the liquid inlet at the bottom end and the distance from the two sides to the liquid inlet are moderate and uniform, the vertical distance of the solidified liquid flowing to the arc-shaped liquid separation plate is increased, the solidified liquid cannot directly impact the highest point, the radian of the arc-shaped liquid separation plate and the angle of the conical part at the lower part of the coagulation bath box body can be changed according to the size of the box body, the solidified liquid is ensured to reach the arc-shaped liquid separation plate after being dispersed by the solid arc-shaped choking body at a moderate distance, and the solidified liquid can be uniformly distributed.

4. The circular holes on the arc-shaped liquid separation plate are large in aperture, large in number and moderate in interval, liquid inlet is blocked to a certain extent, impact force in the inflow direction is reduced to a certain extent, and solidified liquid in the outflow direction is relatively stable.

5. The solid arc-shaped choking body of the liquid inlet blocking device is additionally arranged, and the flowing direction of liquid inlet is effectively dispersed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of an embodiment;

the reference symbols shown in the figures are: 1-rectangular box body, 2-square conical box body, 3-arc liquid separating plate, 4-round hole, 5-liquid inlet pipe, 6-upper sphere, 7-lower sphere, 8-pillar, 9-overflow groove, 10-spinning nozzle, 11-first guide roller and 12-second guide roller.

Detailed Description

The following describes the present design in detail with reference to the accompanying drawings.

As shown in fig. 1, a coagulation bath apparatus for carbon fiber precursor spinning is composed of a series of components including: the coagulation bath box body, the overflow groove 9, the arc-shaped liquid separation plate 3, the liquid inlet pipe 5 and the solid arc-shaped flow choking body are made of stainless steel, the upper part of the coagulation bath box body is a rectangular box body 1, the lower part of the box body is a square conical box body 2, the height of the rectangular box body 1 is 100cm, the width of the rectangular box body is 30cm, the length of the rectangular box body is 130cm, the height of the square conical box body 2 is 30cm, and the angle is 143 degrees; the coagulation bath box body is provided with sections lower than the coagulation bath box body in height at two sides in the spinning and silk running direction, an overflow groove 9 for receiving overflow coagulation liquid is arranged, the overflow groove 9 is higher at one side and lower at the other side, and the height difference is 5cm, so that the overflow coagulation liquid can conveniently flow; an arc-shaped liquid separation plate 3 is arranged on the rectangular edge of a conical box body 2 at the lower part of the coagulation bath box body, the diameter of a round hole 4 is 1cm, 19 holes are arranged in each row in the width direction of the box body, the hole distance is 0.5cm, the top end of the arc-shaped liquid separation plate 3 is 30cm higher than the bottom of the rectangular box body 1, the radian is 99 degrees, and the radius is 85 cm; the bottom of a square conical box body 2 at the lower end of the coagulation bath box body is provided with a liquid inlet, the diameter of the liquid inlet is 2cm, and liquid inlet pipes 5 with different calibers can be installed according to the flow requirement; the tail end of the liquid inlet pipe 5 is correspondingly provided with a solid arc-shaped bluff body, the solid arc-shaped bluff body comprises an upper sphere 6, a lower sphere 7 and a support, the upper sphere 6 is welded with the lower sphere 7, the support is composed of four support columns 8, one ends of the four support columns 8 are welded with four edges of the bottom of the square conical box body 2 respectively, the other ends of the four support columns 8 are welded with the edges formed between the upper sphere 6 and the lower sphere 7, the lower sphere 7 is a third sphere, the upper sphere 6 is a fifth sphere, the diameter of the lower sphere 7 is 10cm, the diameter of the upper sphere 6 is 17cm, the arc angle of the solid arc-shaped bluff body can be changed according to different flow requirements, and the actual process requirements are met.

The device is relatively simple, convenient and visual to use, the height of the square conical box body 2 and the height of the arc-shaped liquid separation plate 3 can be improved according to the liquid inlet flow, the aperture of the round hole 7 on the arc-shaped liquid separation plate 3 and the shape of the solid arc-shaped choking body can be changed, and the best use effect is achieved.

Examples

The utility model provides a carbon fiber precursor spinning coagulation bath tank device, when in use, a spinning spray head 10 and a first guide roller 11 are arranged in a coagulation bath box body, a second guide roller 12 is positioned outside the coagulation bath box body, precursor starts from the spinning spray head 10 and is led out from the second guide roller 12, during the period, a liquid inlet pipe 5 conveys coagulation bath liquid, the liquid inlet flow rate is 39L/min, the content of the coagulation bath is 60 percent, the temperature is 24 ℃, the liquid inlet refractive index is 1.355, the temperature is 24 ℃, the height is half of that of a rectangular box body 1, after the coagulation liquid enters a conical box body 2 below the coagulation bath box body through the liquid inlet pipe 5, the coagulation liquid is blocked and dispersed by a solid arc-shaped flow-blocking body, after the impact force is reduced, the coagulation liquid flows to all directions uniformly, slowly fills the coagulation bath square conical box body 2, reaches an arc-shaped liquid separating plate 3, further reduces the impact force and uniformly enters the rectangular box body 1 part, after the whole coagulation bath box body is filled, the coagulation liquid overflows from an overflow receiving device from an overflow trough 9, the receiving device can enter the coagulating bath box body through the circulation of the recycling device, so that the carbon fiber precursor is coagulated and formed.

Claims

1. The utility model provides a be used for carbon fiber precursor spinning coagulating bath device, its characterized in that divides liquid board, feed liquor pipe, solid arc bluff body including coagulating bath box, arc, coagulating bath box comprises the rectangle box on upper portion and the square cone box of lower part, the arc divides the liquid board to be dome shape and its fixed connection in the rectangle box, and the arc divides the surface equipartition of liquid board to have a plurality of round holes, the bottom of feed liquor pipe and square cone box switches on, solid arc bluff body is located the square cone box to fixed connection is directly over the export of feed liquor pipe.

2. The coagulation bath apparatus for carbon fiber precursor spinning according to claim 1, wherein the top of the left and right sides of the rectangular box is higher than the top of the front and rear sides, and the top of each of the front and rear sides is provided with an overflow chute, and the height of one end of the overflow chute is higher than that of the other end of the overflow chute.

3. The coagulation bath device for carbon fiber precursor spinning according to claim 1, wherein the left and right edges of the arc-shaped liquid separation plate are fixedly connected with the two edges of the junction of the rectangular box body and the square conical box body, and the lengths of the edges are the same.

4. The coagulation bath device for carbon fiber precursor spinning according to claim 1, wherein the solid arc-shaped flow blocking body comprises an upper sphere, a lower sphere and a support, the upper sphere is fixedly connected with the lower sphere, the support comprises four struts, one ends of the four struts are respectively fixedly connected with four edges of the bottom of the square cone-shaped box body, and the other ends of the four struts are fixedly connected with the edges formed between the upper sphere and the lower sphere.

5. The coagulation bath device for carbon fiber precursor spinning according to claim 4, wherein the diameter of the upper sphere is larger than that of the lower sphere, and the height of the upper sphere is smaller than that of the lower sphere.