Device and method for preparing fibers through vacuum suction

Abstract

The invention designs a device for preparing fibers through vacuum suction, which comprises a vacuum heating device, an air inlet and an air outlet are respectively arranged at two ends of the vacuum heating device, a fiber processing device is arranged in the vacuum heating device, the fiber processing device is connected with the air inlet, the fiber processing device comprises a breathable piece, and the breathable piece is connected with the air inlet. A protective layer is arranged on the outer side of the breathable piece, and fibers are arranged on the outer side of the protective layer. The gas inlet and the gas outlet are formed in the two ends of the vacuum heating device, so that a gas channel for gas entering the vacuum heating device and gas exiting the vacuum heating device is formed, a whole bundle of fibers are subjected to heating treatment and gas treatment in the vacuum heating device, and gas entering the fiber treatment device passes through the ventilation piece and is discharged out of the vacuum heating device. Under the protection of the protective layer, gas is in full contact with the inside and the outside of the fibers, and meanwhile, the protective device provides certain buffering force for the fibers during shrinkage, so that the fibers are prevented from being broken in the reaction process.

Description

Technical Field

[0001] This invention belongs to the field of fiber preparation technology, and specifically relates to an apparatus and method for preparing fibers by vacuum suction. Background Technology

[0002] Currently, when fibers are gas-processed under vacuum conditions, continuous feeding equipment is required to ensure uniform contact between the fibers and the gas. Continuous feeding results in long fiber processing time. At the same time, during the unwinding process, the external force can cause irreversible damage to the fibers, leading to the breakage of some fibers, reducing fiber quality and efficiency, and increasing labor costs.

[0003] Especially brittle fibers are prone to breakage during spinning, such as ceramic fibers. They cannot be spun in continuous spinning equipment. The fibers need to be wound into shape and then returned to the yarn basket. They are then placed in a sealed environment for air intake. Placing the fiber cake in the yarn basket for processing will reduce the uniformity of gas contact with the fiber.

[0004] To address this, our company has developed a device and method for vacuum suction fiber preparation that can process fibers quickly and efficiently, allowing the fibers to come into full contact with the gas without damaging them. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for vacuum suction to prepare fibers, which can process fibers quickly and efficiently, allowing the fibers to come into full contact with the gas without damaging the fibers, thereby enhancing the strength of the fibers.

[0006] This invention designs a device for vacuum suction fiber preparation, including a vacuum heating device. The vacuum heating device has an air inlet and an air outlet at its two ends, respectively. A fiber processing device is installed inside the vacuum heating device and is connected to the air inlet. The fiber processing device includes a breathable element, and a protective layer is provided on the outside of the breathable element. Fiber is provided on the outside of the protective layer.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting an air inlet and an air outlet at both ends of the vacuum heating device, a gas channel is formed for entering and exiting the vacuum heating device. By setting a fiber processing device inside the vacuum heating device, the whole bundle of fibers is heated and gas-treated inside the vacuum heating device, avoiding the processes of fiber feeding and unwinding. This allows for large-scale fiber processing, improves processing efficiency, and reduces labor. By connecting the fiber processing device to the air inlet, gas is first introduced into the fiber processing device. By setting a breathable element with a protective layer outside the breathable element, and placing the fiber outside the protective layer, the gas entering the fiber processing device passes through the breathable element. Under the protection of the protective layer, the gas fully contacts the inside and outside of the fiber. At the same time, the protective device provides a certain buffering force when the fiber shrinks, which can prevent the fiber from breaking during the reaction process.

[0008] Preferably, the protective layer is cotton.

[0009] The beneficial effect of adopting the above-mentioned preferred technical solution is that by using cotton as the protective layer, a certain buffering force can be provided when the fiber shrinks, thus avoiding the situation where the fiber breaks during the reaction process.

[0010] Furthermore, the vacuum heating device includes an electric heating jacket, inside which a vacuum chamber is provided, and the fiber processing device is disposed within the vacuum chamber;

[0011] The air inlet and outlet are located at both ends of the vacuum chamber.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting an electric heating jacket, the interior of the vacuum heating device is heated; by setting a vacuum chamber inside the electric heating jacket, the fiber processing device is heated and gas processed in the vacuum chamber; by setting the air inlet and outlet at both ends of the vacuum chamber, the gas enters the vacuum chamber from the outside and flows out from the vacuum chamber.

[0013] Furthermore, the ventilated component is provided with an air inlet chamber, and an air inlet pipe is provided at one end of the air inlet chamber, which is connected to an air inlet; preferably, a heating coil is provided on the air inlet pipe, one end of the heating coil is connected to the air inlet, the other end of the heating coil is connected to the air inlet chamber, and a baffle is provided inside the air inlet pipe, which is located between the two ends of the heating coil.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by connecting the air inlet pipe to the air inlet, gas is allowed to enter the air inlet chamber from the outside of the vacuum heating device, and then the gas flows from the air inlet chamber to the air permeable part; by setting a heating coil on the air inlet pipe, and setting a baffle between the air inlet and the air outlet at both ends of the heating coil, after the gas is introduced into one end of the heating coil, the gas can be heated in the heating coil for a period of time before being introduced into the air inlet chamber. By guiding the gas, the heated gas reacts with the fiber, which can reduce the fiber processing time and increase the fiber processing efficiency.

[0015] Furthermore, the ventilated component includes a gas processing pipe body, on which a plurality of vent holes are provided, and the protective layer is disposed on the outside of the vent holes.

[0016] The beneficial effect of adopting the above-mentioned further technical solution is that by setting a number of vent holes on the gas treatment tube, the gas can flow through the vent holes to the protective layer, thereby enabling uniform gas treatment of the inside and outside of the fiber.

[0017] Furthermore, one end of the vacuum heating device is provided with a sealing retainer, and the air inlet is located on the sealing retainer.

[0018] The beneficial effect of adopting the above-mentioned further technical solution is that: by providing a sealing and holding member at one end of the vacuum heating device, when the sealing and holding member is detached from the vacuum heating device, the fiber processing device is placed into the vacuum heating device; when the sealing and holding member is held at one end of the vacuum heating device, gas is introduced into the fiber processing device from the air inlet of the sealing and holding member.

[0019] Furthermore, an air inlet valve is provided at one end of the air inlet, and an air outlet valve is provided at one end of the air outlet.

[0020] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by setting an air inlet valve at one end of the air inlet, the air can be quickly introduced into the vacuum heating device through the air inlet valve; by setting an air extraction valve at one end of the air outlet, the vacuum heating device can be quickly evacuated, and the gas can be quickly circulated from the air outlet to the outside.

[0021] Furthermore, the vacuum chamber is provided with a clamping and fixing component, which cooperates with the fiber processing device to clamp it; preferably, the clamping and fixing component is provided with a sleeve, the sleeve is provided with an air guide hole, the fiber processing device is provided with a fastening component, the fastening component cooperates with the sleeve to clamp it, and the fiber is disposed inside the sleeve.

[0022] The beneficial effects of adopting the above-mentioned further technical solution are as follows: By setting a clamping and fixing component in the vacuum chamber, the fiber processing device can be suspended and fixed in the vacuum chamber, ensuring that the surrounding area of ​​the fiber processing device does not come into contact with the vacuum heating device. A gas channel is formed between the fiber processing device and the vacuum heating device, allowing the outside and inside of the fiber to fully contact the gas. The clamping and fixing component is equipped with a sleeve, allowing the fiber to be placed inside the sleeve. The fiber processing device is equipped with a fastening component, which cooperates with the sleeve to clamp the fiber, forming a gas heat treatment space on the outer surface of the fiber. This allows the gas to accumulate on the outer surface of the fiber, which is more conducive to the atmospheric treatment of the fiber. Finally, the gas flows out to the outside through the guide hole, thereby guiding the gas around the fiber and preventing the gas from rapidly diffusing to the outside.

[0023] Furthermore, the clamping and fixing component is connected to the inner wall of the vacuum heating device, and a clamping groove is provided on the side wall of the fiber processing device near the air outlet, and the clamping and fixing component cooperates with the clamping groove to clamp;

[0024] Preferably, the clamping and fixing component is a plurality of L-shaped plates, one end of the L-shaped plate is connected to the inner wall of the vacuum heating device, and the other end of the L-shaped plate is engaged with the clamping groove for clamping;

[0025] More preferably, the retaining fastener is a straight plate with a protrusion that engages with the retaining groove for retaining.

[0026] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the clamping and fixing component is connected to the inner wall of the vacuum heating device, thereby fixing the clamping and fixing component to the inside of the vacuum heating device; the clamping groove is provided on the side wall of the fiber processing device near the air outlet, so that the clamping and fixing component and the clamping groove cooperate to clamp and fix the rear end of the fiber processing device to the clamping and fixing component.

[0027] The fiber processing device is suspended inside the vacuum heating device by using several L-shaped plates as clamping fasteners. One end of the clamping fastener is connected to the inner wall of the vacuum heating device, and the other end of the clamping fastener is engaged with the clamping groove.

[0028] The fiber processing device is suspended inside the vacuum heating device by using a straight plate as the clamping fastener, with the protrusion on the straight plate engaging with the clamping groove.

[0029] Furthermore, the clamping and fixing member is disposed inside the vacuum heating device and the fiber processing device, with one end of the clamping and fixing member connected to the air inlet and the other end of the clamping and fixing member connected to the air outlet.

[0030] The clamping and fixing component is a hollow tube, and the hollow tube is provided with a plurality of air vent holes one and two, and a partition is provided between the air vent holes one and two.

[0031] The beneficial effect of adopting the above-mentioned further technical solution is that: by the clamping and fixing member being installed through the interior of the vacuum heating device and the fiber processing device, the fiber processing device is sleeved inside the vacuum heating device, air enters at one end of the clamping and fixing member, and air exits at the other end of the clamping and fixing member;

[0032] The hollow tube has several air vents, namely, the first and second air vents. The clamping and fixing parts are hollow tubes with a hollow center. This allows the gas entering from the air inlet to flow into the interior of the fiber processing device through the first air vent, and the gas in the vacuum heating device to flow out to the air outlet through the second air vent. A baffle is set between the first and second air vents, so that the gas first flows into the interior of the fiber processing device, and then flows out of the vacuum heating device through the second air vent.

[0033] A device and method for preparing fibers by vacuum suction, characterized in that: it includes: S1: winding the fiber on a protective layer, then placing the fiber processing device into a vacuum chamber, fixing the fiber processing device with a clamping and fixing component, and finally clamping the sealing and clamping component with one end of the vacuum heating device.

[0034] S2: Open the suction valve to evacuate the vacuum chamber. After evacuation, close the suction valve. Turn on the electric heating mantle. When the vacuum chamber temperature reaches 800-900℃, open the inlet valve. When the temperature inside the inlet chamber reaches 800-900℃, open the suction valve. Maintain the temperature at 800-900℃ for 6 hours. The inlet valve and suction valve should be under negative pressure on one side and positive pressure on the other. The gas flow rate should be 1.0-2.0 m / s². 3 / h;

[0035] S3: After the reaction time is complete, turn off the electric heating jacket, close the air inlet valve, keep the air extraction valve open, and reduce the pressure in the vacuum chamber to a vacuum state.

[0036] After cooling to room temperature and allowing the fibers prepared by vacuum suction to cool, remove the sealing clips and take out the fiber processing device from the vacuum chamber.

[0037] The beneficial effects of adopting the above-mentioned further technical solution are as follows: by winding the fiber around the protective layer, the fiber is protected and the fiber is prevented from shrinking and breaking during the processing. Then, the fiber processing device with the fiber is placed in the vacuum chamber and fixed with the clamping and fixing component. The sealing clamping component is clamped to one end of the vacuum heating device, so that the air inlet pipe is set in the air inlet.

[0038] Opening the suction valve creates a vacuum in the vacuum chamber, preventing the fiber filaments from reacting with the external environment at high temperatures. When the temperature reaches 800-900℃, opening the inlet valve allows gas to enter the inlet chamber. Simultaneously, the electric heating mantle is activated to heat the fibers. When the temperature inside the inlet chamber reaches 800-900℃, opening the suction valve allows gas to flow uniformly from the outside—inlet chamber—ventilation holes—protective layer—inner side of the fiber—outer side of the fiber—vacuum chamber back to the outside. This ensures uniform contact between the gas and the filaments. Under the combined effect of high temperature and the protective layer, the ceramic fibers react effectively with the gas during shrinkage, improving fiber performance. The negative pressure on one side and the positive pressure on the other side of the inlet and suction valves ensure... The gas flows from the inlet valve to the exhaust valve, guiding the gas flow and ensuring sufficient contact between the fiber and the gas. After the reaction time is complete, the fiber is cooled to room temperature under vacuum to prevent further reaction with the external environment at high temperatures, thus further improving the reaction effect between the fiber and the gas. After the fiber prepared by vacuum suction has cooled, the sealing clip is removed, and the fiber processing device is taken out of the vacuum chamber. This reduces the unwinding process, effectively reduces labor costs, and improves fiber processing efficiency. At the same time, it is well adapted to the shrinkage of the fiber, has a heating function, which has a certain effect on improving fiber performance, reduces the use of large continuous spinning equipment, and has a simple mechanical structure that is not prone to failure. Attached Figure Description

[0039] Figure 1 A schematic diagram of the apparatus for preparing fibers by vacuum suction;

[0040] Figure 2 A schematic diagram of the structure of an apparatus for preparing fibers by vacuum suction, according to Example 1;

[0041] Figure 3 Schematic diagram of the apparatus for preparing fibers by vacuum suction, Example 2;

[0042] Figure 4 Schematic diagram of the apparatus for preparing fibers by vacuum suction (Example 3);

[0043] Figure 5 Schematic diagram of the apparatus for preparing fibers by vacuum suction, Example 4;

[0044] 1. Vacuum heating device; 11. Air inlet; 12. Air outlet; 13. Electric heating jacket; 14. Vacuum chamber; 15. Sealing and holding component; 2. Fiber processing device; 21. Ventilation component; 211. Gas processing pipe body; 212. Ventilation hole; 22. Protective layer; 23. Air inlet chamber; 24. Air inlet pipe; 241. Heating coil; 242. Baffle; 25. Holding groove; 26. Fastener; 3. Air inlet valve; 4. Air extraction valve; 5. Holding and fixing component; 51. L-shaped plate; 52. Straight plate; 53. Protrusion; 54. Hole tube; 55. Ventilation hole one; 56. Ventilation hole two; 57. Partition; 58. Sleeve; 581. Air guide hole; 6. Fiber. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0046] Example 1:

[0047] A device and method for preparing fibers by vacuum suction can quickly and efficiently process fibers 6, allowing fibers 6 to fully contact with gas without damaging the fibers 6, thereby enhancing the strength of the fibers 6.

[0048] A vacuum suction fiber preparation apparatus includes a vacuum heating device 1, with an air inlet 11 and an air outlet 12 at both ends of the vacuum heating device 1. A fiber processing device 2 is disposed inside the vacuum heating device 1 and connected to the air inlet 11. The fiber processing device 2 includes a breathable element 21, with a protective layer 22 on the outside of the breathable element 21, and fibers 6 disposed on the outside of the protective layer 22. By providing air inlets 11 and outlets 12 at both ends of the vacuum heating device 1, a gas channel is formed for entering and exiting the vacuum heating device 1. The fiber processing device 2 within the vacuum heating device 1 allows the entire bundle of fibers 6 to be processed. Heating and gas treatment are performed inside the vacuum heating device 1, avoiding the processes of fiber feeding and unloading. This allows for the processing of fibers 6 in large quantities, improving processing efficiency and reducing labor costs. The fiber processing device 2 is connected to the air inlet 11, allowing gas to be introduced into the fiber processing device 2 first. By setting a vent 21 with a protective layer 22 on the outside, and placing the fibers 6 on the outside of the protective layer 22, the gas entering the fiber processing device 2 passes through the vent 21 and, under the protection of the protective layer 22, makes full contact between the gas and the inside and outside of the fibers 6. At the same time, the protective device provides a certain buffering force when the fibers 6 shrink, which can prevent the fibers 6 from breaking during the reaction process.

[0049] Preferably, the protective layer 22 is made of cotton; by making the protective layer 22 of cotton, a certain buffering force can be provided when the fiber 6 shrinks, so as to avoid the fiber 6 from breaking during the reaction process.

[0050] The vacuum heating device 1 includes an electric heating jacket 13, inside which a vacuum chamber 14 is provided, and the fiber processing device 2 is disposed inside the vacuum chamber 14; the air inlet 11 and the air outlet 12 are disposed at both ends of the vacuum chamber 14; by providing the electric heating jacket 13, the interior of the vacuum heating device 1 is heated; by providing the vacuum chamber 14 inside the electric heating jacket 13, the fiber processing device 2 is heated and gas processed inside the vacuum chamber 14; by providing the air inlet 11 and the air outlet 12 at both ends of the vacuum chamber 14, gas enters the vacuum chamber 14 from the outside and flows out from the vacuum chamber 14.

[0051] An air inlet chamber 23 is provided inside the ventilator 21. An air inlet pipe 24 is provided at one end of the air inlet chamber 23, and the air inlet pipe 24 is connected to the air inlet 11. Through the connection between the air inlet pipe 24 and the air inlet 11, gas enters the air inlet chamber 23 from the outside of the vacuum heating device 1, and then flows from the air inlet chamber 23 to the ventilator 21. A heating coil 241 is provided on the air inlet pipe 24, and a baffle 242 is provided between the air inlet 11 and the air outlet 12 at both ends of the heating coil 241. After gas is introduced into one end of the heating coil 241, the gas can be heated in the heating coil 241 for a period of time before being introduced into the air inlet chamber 23. By guiding the gas, the heated gas reacts with the fiber 6, which can reduce the processing time of the fiber 6 and increase the processing efficiency of the fiber 6.

[0052] The ventilated component 21 includes a gas treatment tube 211, which has a plurality of vent holes 212. The protective layer 22 is disposed outside the vent holes 212. By providing a plurality of vent holes 212 on the gas treatment tube 211, gas can flow through the vent holes 212 to the protective layer 22, thereby enabling uniform gas treatment of the inside and outside of the fiber 6.

[0053] One end of the vacuum heating device 1 is provided with a sealing and holding member 15, and the air inlet 11 is provided on the sealing and holding member 15. By providing a sealing and holding member 15 at one end of the vacuum heating device 1, when the sealing and holding member 15 is detached from the vacuum heating device 1, the fiber processing device 2 is placed into the vacuum heating device 1. When the sealing and holding member 15 is held by one end of the vacuum heating device 1, gas is introduced into the fiber processing device 2 from the air inlet 11 of the sealing and holding member 15.

[0054] An air inlet valve 3 is provided at one end of the air inlet 11, and an air extraction valve 4 is provided at one end of the air outlet 12. By providing an air inlet valve 3 at one end of the air inlet 11, air can be quickly introduced into the vacuum heating device 1 through the air inlet valve 3. By providing an air extraction valve 4 at one end of the air outlet 12, the vacuum heating device 1 can be quickly evacuated, and the gas can be quickly circulated to the outside from the air outlet 12.

[0055] The vacuum chamber 14 is provided with a clamping and fixing component 5, which cooperates with the fiber processing device 2 to clamp it.

[0056] By setting a clamping and fixing component 5 in the vacuum chamber 14, the fiber processing device 2 can be suspended and fixed in the vacuum chamber 14, ensuring that the fiber processing device 2 is not in contact with the vacuum heating device 1. A gas channel is formed between the fiber processing device 2 and the vacuum heating device 1, so that the outside and inside of the fiber 6 can be fully in contact with the gas.

[0057] The retaining fastener 5 is connected to the inner wall of the vacuum heating device 1. The fiber processing device 2 has a retaining groove 25 on its side wall near the air outlet 12. The retaining fastener 5 engages with the retaining groove 25 for retaining. Preferably, the retaining fastener 5 consists of several L-shaped plates 51. One end of each L-shaped plate 51 is connected to the inner wall of the vacuum heating device 1, and the other end engages with the retaining groove 25 for retaining. By connecting the retaining fastener 5 to the inner wall of the vacuum heating device 1, the retaining fastener 5 is fixed to the interior of the vacuum heating device 1. By having the retaining groove 25 on the side wall of the fiber processing device 2 near the air outlet 12 for retaining, the retaining fastener 5 engages with the retaining groove 25 for retaining, thereby securing the rear end of the fiber processing device 2 to the retaining fastener 5.

[0058] By using several L-shaped plates 51 as clamping fasteners 5, one end of the clamping fasteners 5 is connected to the inner wall of the vacuum heating device, and the other end of the clamping fasteners 5 is engaged with the clamping groove 25 to clamp, thereby suspending the fiber processing device 2 inside the vacuum heating device 1.

[0059] A device and method for preparing fibers by vacuum suction, characterized in that: it includes: S1: winding fibers 6 around a protective layer 22, then placing a fiber processing device 2 into a vacuum chamber 14, so that the fiber processing device 2 is fixed with a clamping and fixing member 5, and finally clamping the sealing clamping member 15 to one end of the vacuum heating device 1.

[0060] S2: Open the suction valve 4 to evacuate the vacuum chamber 14. After evacuation, close the suction valve 4. Turn on the electric heating mantle 13. When the temperature of the vacuum chamber 14 reaches 800-900℃, open the inlet valve 3. When the temperature inside the inlet chamber 23 reaches 800-900℃, open the suction valve 4. Maintain the temperature at 800-900℃ for 6 hours. The inlet valve 3 and suction valve 4 should be under negative pressure on one side and positive pressure on the other. The gas flow rate should be 1.0-2.0 m / s². 3 / h;

[0061] S3: After the reaction time is complete, turn off the electric heating jacket 13 and the air inlet valve 3, keep the air extraction valve 4 open, and reduce the pressure in the vacuum chamber 14 to a vacuum state; reduce to room temperature, and after the fiber 6 prepared by vacuum suction has cooled, remove the sealing clamp 15 and take out the fiber processing device 2 from the vacuum chamber 14; protect the fiber 6 by wrapping it around the protective layer 22 to prevent the fiber 6 from shrinking and breaking during processing, and then place the fiber processing device 2 with the fiber 6 into the vacuum chamber 14 and fix it in place with the clamping and fixing piece 5. The sealing clamp 15 is clamped to one end of the vacuum heating device 1, so that the air inlet pipe 24 is placed inside the air inlet 11; the suction valve 4 is opened to evacuate the vacuum chamber 14, which can prevent the fiber 6 raw filament from reacting with the outside at high temperature. When the temperature reaches 800-900℃, the air inlet valve 3 is opened to introduce gas into the air inlet chamber 23. At the same time, the electric heating jacket 13 is turned on to heat the fiber 6. When the temperature in the air inlet chamber 23 reaches 800-900℃, the suction valve 4 is opened, so that the gas flows from the outside - air inlet chamber 23 - vent. 212 - Protective layer 22 - Inner side of fiber 6 - Outer side of fiber 6 - Vacuum chamber 14 - External gas flow direction, achieving uniform contact between gas and fiber. Under the dual action of high temperature and protective layer 22, the ceramic fiber 6 reacts well with the gas during the shrinkage process, improving the performance of fiber 6; by using inlet valve 3 and exhaust valve 4 with negative pressure on one side and positive pressure on the other, the gas is guided from inlet valve 3 to exhaust valve 4, ensuring gas flow and allowing the fiber 6 to fully contact the gas; after the reaction time is completed, the fiber 6 is placed in a vacuum state. Cooling to room temperature prevents fiber 6 from continuing to react with the outside environment at high temperatures, which can further improve the reaction effect between fiber 6 and gas. After the fiber 6 prepared by vacuum suction has cooled down, remove the sealing clip 15 and take the fiber processing device 2 out of the vacuum chamber 14. This can reduce the unwinding process, effectively reduce labor costs, and improve the processing efficiency of fiber 6. At the same time, it is well adapted to the shrinkage of fiber 6 and has a heating function, which can improve the performance of fiber 6 to a certain extent. It reduces the use of large continuous feeding equipment, and the mechanical structure is simple and not prone to failure.

[0062] Example 2: The contents that are the same as those in Example 1 will not be repeated here; the different aspects of this example from Example 1 are as follows: Preferably, a heating coil 241 is provided on the air intake pipe 24, one end of the heating coil 241 is connected to the air intake port 11, and the other end of the heating coil 241 is connected to the air intake chamber 23. A baffle 242 is provided inside the air intake pipe 24, and the baffle 242 is located between the two ends of the heating coil 241.

[0063] Preferably, the clamping and fixing member 5 is provided with a sleeve 58, the sleeve 58 is provided with a vent hole 581, and the fiber processing device 2 is provided with a fastening member 26. The fastening member 26 cooperates with the sleeve 58 to clamp the fiber 6 inside the sleeve 58. By providing a sleeve 58 on the clamping and fixing member 5, the fiber 6 is placed inside the sleeve 58. By providing a fastening member 26 on the fiber processing device 2, the fastening member 26 cooperates with the sleeve 58 to clamp the fiber 6, forming a gas heat treatment space on the outer surface of the fiber 6. This allows the gas to accumulate on the outer surface of the fiber 6, which is more conducive to the atmosphere treatment of the fiber 6. Finally, the gas flows out to the outside through the vent hole 581, thereby guiding the gas around the fiber 6 and preventing the gas from the fiber 6 from rapidly diffusing to the outside.

[0064] Example 3: The content that is the same as in Example 2 will not be repeated; the differences between this example and Example 2 are as follows:

[0065] Preferably, the clamping and fixing member 5 is a straight plate 52, and the straight plate 52 is provided with a protrusion 53, which cooperates with the clamping groove 25 for clamping; by using a straight plate 52 as the clamping and fixing member 5, and the protrusion 53 on the straight plate 52 cooperating with the clamping groove 25 for clamping, the fiber processing device 2 is suspended inside the vacuum heating device 1.

[0066] Example 4: The content that is the same as in Example 3 will not be repeated; the differences between this example and Example 3 are as follows:

[0067] The retaining fastener 5 is disposed through the interior of the vacuum heating device 1 and the fiber processing device 2. One end of the retaining fastener 5 is connected to the air inlet 11, and the other end is connected to the air outlet 12. The retaining fastener 5 is a hollow tube 54, which is provided with a plurality of air diffuser holes 55 and 56. A partition 57 is provided between the air diffuser holes 55 and 56. By the retaining fastener 5 being disposed through the interior of the vacuum heating device 1 and the fiber processing device 2, the fiber processing device 2 is fitted inside the vacuum heating device 1. Air enters from one end of the retaining fastener 5 and exits from the other end. Several air diffusers 55 and 56 are provided on the hollow tube 54, making the retaining fastener 5 a hollow tube with a hollow center. This allows the gas entering from the air inlet 11 to flow into the interior of the fiber processing device 2 through the air diffuser 55, and the gas in the vacuum heating device 1 to flow out to the air outlet 12 through the air diffuser 56. A baffle 57 is provided between the air diffuser 55 and the air diffuser 56, so that the gas first flows into the interior of the fiber processing device 2, and then flows out of the vacuum heating device 1 through the air diffuser 56.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An apparatus for preparing fibers by vacuum suction, characterized in that: The device includes a vacuum heating device (1), which has an air inlet (11) and an air outlet (12) at its two ends. The vacuum heating device (1) is equipped with a fiber treatment device (2), which is connected to the air inlet (11). The fiber treatment device (2) includes a breathable element (21), and a protective layer (22) is provided on the outside of the breathable element (21). Fibers (6) are provided on the outside of the protective layer (22).

2. The apparatus for preparing fibers by vacuum suction according to claim 1, characterized in that: The vacuum heating device (1) includes an electric heating jacket (13), and a vacuum chamber (14) is provided inside the electric heating jacket (13). The fiber processing device (2) is located inside the vacuum chamber (14). The air inlet (11) and air outlet (12) are located at both ends of the vacuum chamber (14).

3. The apparatus for preparing fibers by vacuum suction according to claim 1, characterized in that: The ventilated component (21) is provided with an air inlet chamber (23), and an air inlet pipe (24) is provided at one end of the air inlet chamber (23). The air inlet pipe (24) is connected to the air inlet (11). Preferably, a heating coil (241) is provided on the air inlet pipe (24), the heating coil is disposed in the vacuum heating device (1), one end of the heating coil (241) is connected to the air inlet (11), the other end of the heating coil (241) is connected to the air inlet chamber (23), and a baffle (242) is provided in the air inlet pipe (24), the baffle (242) is located between the two ends of the heating coil (241).

4. The apparatus for preparing fibers by vacuum suction according to claim 3, characterized in that: The ventilated component (21) includes a gas processing pipe (211), which has a plurality of vent holes (212) and the protective layer (22) is disposed on the outside of the vent holes (212).

5. The apparatus for preparing fibers by vacuum suction according to claim 1, characterized in that: One end of the vacuum heating device (1) is provided with a sealing retainer (15), and the air inlet (11) is provided on the sealing retainer (15).

6. The apparatus for preparing fibers by vacuum suction according to claim 1, characterized in that: An air inlet valve (3) is provided at one end of the air inlet (11), and an air outlet valve (4) is provided at one end of the air outlet (12).

7. The apparatus for preparing fibers by vacuum suction according to claim 1, characterized in that: The vacuum chamber (14) is provided with a clamping and fixing component (5), which cooperates with the fiber processing device (2) to clamp; Preferably, the clamping and fixing member (5) is provided with a sleeve (58), the sleeve (58) is provided with an air guide hole (581), the fiber processing device (2) is provided with a fastener (26), the fastener (26) cooperates with the sleeve (58) to clamp, and the fiber (6) is disposed inside the sleeve (58).

8. The apparatus for preparing fibers by vacuum suction according to claim 7, characterized in that: The clamping and fixing member (5) is connected to the inner wall of the vacuum heating device (1), and the fiber processing device (2) is provided with a clamping groove (25) on the side wall near the air outlet (12). The clamping and fixing member (5) and the clamping groove (25) cooperate to clamp. Preferably, the clamping and fixing member (5) is a plurality of L-shaped plates (51), one end of the L-shaped plate (51) is connected to the inner wall of the vacuum heating device (1), and the other end of the L-shaped plate (51) is engaged with the clamping groove (25) for clamping; Preferably, the clamping fastener (5) is a straight plate (52), and the straight plate (52) is provided with a protrusion (53), which cooperates with the clamping groove (25) for clamping.

9. The apparatus for preparing fibers by vacuum suction according to claim 7, characterized in that: The clamping and fixing member (5) is installed inside the vacuum heating device (1) and the fiber treatment device (2). One end of the clamping and fixing member (5) is connected to the air inlet (11), and the other end of the clamping and fixing member (5) is connected to the air outlet (12). The clamping and fixing component (5) is a hollow tube (54). The hollow tube (54) is provided with a plurality of air vents (55) and air vents (56). A partition (57) is provided between the air vents (55) and air vents (56). The air vents (55) are located in the fiber processing device (2), and the air vents (56) are located inside the vacuum heating device (1).

10. An apparatus and method for preparing fibers by vacuum suction, characterized in that: include: S1: Wrap the fiber (6) around the protective layer (22), then place the fiber processing device (2) into the vacuum chamber (14) so ​​that the fiber processing device (2) and the clamping and fixing member (5) are fixed together. Finally, clamp the sealing clamping member (15) to one end of the vacuum heating device (1). S2: Open the suction valve (4) to evacuate the vacuum chamber (14). After evacuation, close the suction valve (4). Turn on the electric heating mantle (13). When the temperature of the vacuum chamber (14) reaches 800-900℃, open the inlet valve (3). When the temperature in the inlet chamber (23) reaches 800-900℃, open the suction valve (4). Maintain the temperature at 800-900℃ for 6 hours. The inlet valve (3) and suction valve (4) are under negative pressure on one side and positive pressure on the other side. The gas flow rate is 1.0-2.0 m / s. 3 / h; S3: After the reaction time is completed, turn off the electric heating jacket (13), close the air inlet valve (3), keep the air extraction valve (4) open, and reduce the pressure in the vacuum chamber (14) to a vacuum state; After cooling to room temperature and the fiber (6) prepared by vacuum suction, remove the sealing clip (15) and take out the fiber processing device (2) from the vacuum chamber (14).

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