CN102645091B - Drying device for washed carbon fibers - Google Patents

Abstract

The invention discloses a drying device for washed carbon fibers, which comprises a device main body, wherein drying channels are arranged in the device main body and penetrate through the device main body, carbon fiber strands penetrate through the drying channels, the two ends of the drying channels are respectively communicated with a supply air channel and a return air channel, dry hot air enters from the supply air channel, passes through the drying channels and then reaches the return air channel, the two ends of the device main body are respectively provided with a furnace end hot roll, the carbon fiber strands are wound on the furnace end hot rolls, and compact hot rolls are also arranged at the furnace end hot rolls and adjoined to the furnace end hot rolls to squeeze the carbon fiber strands; in order to prolong the time for the carbon fiber strands to penetrate through the drying channels, the drying channels are arranged into a plurality of layers, and the carbon fiber strands are wound on the furnace end hot rolls and then pass through each drying channel layer by layer; and the drying channels are wave types, and the dry hot air flows in the drying channels in a curved way, and repeatedly passes by the carbon fiber strands so that the carbon fiber strands are fully dried.

Description

Drying device after carbon fiber washing

technical field

The invention relates to carbon fiber processing technology, in particular to a drying device for carbon fiber after washing.

Background technique

Since carbon fiber needs to be washed with water to remove excess electrolyte and impurities, it needs to be dried by a drying device to remove excess water for the next stage of sizing.

During the sizing process, the sizing material needs to enter the deep layer of the carbon fiber to form an effective protective film to protect the carbon fiber. Most of the traditional drying equipment is carried out in the way of hot air flat drying, and its drying effect is limited. During the sizing process, if the carbon fiber filaments contain excess water, it will have a great impact on the sizing, because the carbon fiber filaments are soaked in water. It is easy to elongate and deform, resulting in uneven surface, which is not conducive to the adhesion of slurry on carbon fiber filaments.

Contents of the invention

The object of the present invention is to provide a drying device for carbon fibers after water washing, so as to facilitate sufficient drying of the washed carbon fibers.

The technical scheme that the present invention adopts for solving its technical problem is,

Drying device for carbon fiber after washing, including the main body of the device. The main body of the device is provided with a drying channel. The drying channel runs through the main body of the device. The air duct and the return air duct are connected, and the dry hot air enters from the air supply duct, passes through the drying duct and reaches the return air duct, and heats and dries the carbon fiber tow in the drying duct. Furnace end hot roller, carbon fiber tow is wound on the furnace end hot roller, and there is also a pressing hot roller at the furnace end hot roller, which is close to the furnace end hot roller to squeeze the carbon fiber tow;

Further, in order to prolong the passing time of the carbon fiber tow in the drying channel, the dry hot air is used to dry the carbon fiber tow for a long time. The drying channel is provided with multiple layers, and the carbon fiber tow passes through the furnace end heat roller layer by layer. Each drying channel;

In addition, the drying channel is wave-shaped, and the hot drying air advances in a curve in the drying channel to fully dry the carbon fiber tow.

The advantage of the present invention is that the drying device is equipped with furnace end hot rollers and extruding hot rollers to squeeze the carbon fiber tow and extrude excess water. Hot steam passes through the hot rollers, which can relax and flatten the carbon fiber filaments. The surface of the bundle can expand its surface area and make the surface flat, which is conducive to combining with other materials. After such a smoothing process of the carbon fiber surface, the fibers in the carbon fiber bundle can also be arranged neatly, and the strength of the carbon fiber can be enhanced. The advanced drying process can make the carbon fiber dry evenly without causing the tension and surface unevenness of the upper and lower fibers. The drying device can greatly reduce the moisture inside the carbon fiber, which is conducive to the sizing process.

Description of drawings

Fig. 1 is the structural representation of the drying device after carbon fiber water washing that the present invention proposes;

Fig. 2 is a schematic diagram of the hot air circulation of the drying device.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with illustrations and specific embodiments.

As shown in Fig. 1 and Fig. 2, the carbon fiber drying device after water washing proposed by the present invention includes a device main body 100, which is provided with a drying channel 110, the drying channel 110 runs through the device main body 100, and the carbon fiber tow 200 is in the drying channel 110. The two ends of the drying channel 110 are connected to the air supply duct 121 and the return air duct 122 respectively, and the dry hot air (the wind direction is shown by the arrow in the figure) enters from the air supply duct 121 After passing through the drying channel 110, it reaches the return air channel 122, and the carbon fiber tow 200 in the drying channel 110 is heated and dried. The two ends of the main body 100 of the device are provided with furnace end hot rollers 130, and the carbon fiber tow 200 is wound around the furnace end. On the hot roller 130, there is also a pressing hot roller 131 at the furnace end hot roller 130, and the pressing hot roller 131 is close to the furnace end hot roller 130 to squeeze the carbon fiber tow 200;

As shown in Fig. 1, in order to extend the passing time of the carbon fiber tow 200 in the drying channel 110, the dry hot air is used to dry the carbon fiber tow 200 for a long time. The drying channel 110 is provided with multiple layers, and the carbon fiber tow 200 is wound After passing through the hot roller 130 at the furnace end, it passes through each drying channel layer by layer; the drying channel 110 is wave-shaped, and the hot drying air advances in a curve in the drying channel 110 to fully dry the carbon fiber tow 200 .

This drying device is equipped with furnace-end hot rollers and extrusion hot rollers to squeeze the carbon fiber tow and squeeze out excess water. Hot steam passes through the hot roller, which can relax and flatten the surface of the carbon fiber tow, and can expand Its surface area makes the surface flat, which is conducive to combining with other materials. After such a flattening process of the carbon fiber surface, the fibers in the carbon fiber tow can also be arranged neatly, and the strength of the carbon fiber can be enhanced. The upright drying process can make The uniform drying of carbon fiber will not cause the tension and surface unevenness of the upper and lower fibers. The drying device can greatly reduce the moisture inside the carbon fiber, which is beneficial to the sizing process.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and that described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention also has various aspects without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (1)

1. drying device after carbon fiber washing, comprise apparatus main body, dry channel is provided with in this apparatus main body, dry channel through-going device main body, carbon fibre tow passes in dry channel, pass in and out from dry channel two ends, dry channel two ends are communicated with return airway with supply air duct respectively, dry-heat air enters from supply air duct, by arriving return airway after dry channel, heat drying process is carried out to the carbon fibre tow in dry channel, it is characterized in that, the two ends of described apparatus main body are provided with stove end hot-rolling, carbon fibre tow is around on stove end hot-rolling, stove end hot-rolling place is also provided with compression hot-rolling, this compression hot-rolling is near stove end hot-rolling, carbon fibre tow is extruded, described dry channel is provided with plural layer, carbon fibre tow is walked around after stove end hot-rolling successively by each dry channel, the supply air duct of plural layer dry channel comprises two air-supply air ports, return airway comprises two return air air ports, described dry channel is undaform, dry-heat air is curve in dry channel.