Carbon fiber pre-oxidation furnace

Abstract

The utility model discloses a carbon fiber pre-oxidation furnace which comprises a movable cabinet body, an L-shaped furnace body arranged in the movable cabinet body, a touch display screen embedded on the movable cabinet body, a pressure gauge, a pressure regulating valve, a power switch, a starting switch, a stopping switch and a flow meter, the pressure gauge, the pressure regulating valve and the furnace body are connected through pipelines; the pressure regulating valve is externally connected with compressed air; the touch display screen is electrically connected with the power switch, the start switch and the stop switch; the flow meter is connected between the pressure regulating valve and the air inlet; the furnace body comprises a heating section pipe and a preheating section pipe which jointly form an L shape, a heater arranged in the preheating section pipe in the horizontal direction, a fiber containing basket arranged in the top of the heating section pipe, an air inlet and a sensor connector which are formed in the preheating section pipe, and an air outlet formed in the top of the heating section pipe. By means of the scheme, the device has the advantages of being simple in structure, easy and convenient to control and the like.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber processing technology, and in particular to a carbon fiber pre-oxidation furnace. Background Technology

[0002] Carbon fiber is a novel fiber material with a carbon content of over 95%, characterized by high strength and high modulus. The carbon fiber used in this technology is primarily pitch-based carbon fiber. During processing, the material requires pre-oxidation heating. For example, the Chinese utility model patent with publication number CN219824462U, entitled "A Carbon Fiber Processing Pre-oxidation Device," includes an operating box. Two mounting plates are fixedly connected to the bottom of the operating box. A drive roller and a driven roller located behind the drive roller are rotatably connected between the two mounting plates. An outer casing is provided outside the operating box. An air-gathering chamber is fixedly connected to the bottom of the operating box. Multiple evenly distributed air nozzles are connected to the upper surface of the air-gathering chamber. An air inlet pipe, which passes sequentially through the operating box and the outer casing, is connected to the bottom of the air-gathering chamber. Hot air enters the interior of the air-gathering chamber through the air inlet pipe and is then evenly sprayed out through the multiple air nozzles, ensuring that the hot air is evenly blown over the carbon fiber material.

[0003] For example, the Chinese utility model patent with publication number CN217869239U and title "A Pre-oxidation Furnace for Processing PAN-based Carbon Fiber Products" includes a furnace body with fiber inlets and outlets on both sides. An air inlet pipe is located at the bottom of the furnace body, and an air outlet pipe is located at the top. A fan is connected to the end of the air inlet pipe furthest from the furnace body. One end of the fan is connected to an electric heater, and one end of the electric heater is connected to the air outlet pipe. One end of the air inlet pipe extends into the furnace body and is connected to a corrugated pipe. The structures of these pre-oxidation furnaces are all very complex.

[0004] For example, the Chinese utility model patent with publication number CN219731149U and title "A Pre-oxidation Furnace for Pitch-Based Carbon Fiber" includes a furnace body. A first rotating plate is rotatably mounted on one side of the furnace body, and a second rotating plate is rotatably mounted on the side of the furnace body away from the first rotating plate. Two fixed frames are symmetrically mounted between the first and second rotating plates, and a support frame is slidably mounted between the two fixed frames. Multiple evenly distributed through holes are opened inside the support frame, and pitch-based carbon fiber filaments are slidably connected inside each of the through holes. A handle is fixedly mounted on the side of the support frame near the first rotating plate, and a motor is fixedly connected to the side of the second rotating plate away from the support frame. When the motor is started, the second rotating plate rotates, causing the support frame and the pitch-based carbon fiber filaments on it to rotate, so that both sides of the pitch-based carbon fiber filaments can come into contact with the oxygen above, and the contact time is almost equal, allowing the pitch-based carbon fiber filaments to be fully pre-oxidized. Its structure is relatively complex and difficult to control.

[0005] Therefore, there is an urgent need to propose a carbon fiber pre-oxidation furnace with a simple structure. Utility Model Content

[0006] To address the above problems, the purpose of this utility model is to provide a carbon fiber pre-oxidation furnace. The technical solution adopted by this utility model is as follows:

[0007] A carbon fiber pre-oxidation furnace includes a movable cabinet, an L-shaped furnace body housed within the movable cabinet, and a touch screen display, a pressure gauge, a pressure regulating valve, a power switch, a start switch, a stop switch, and a flow meter embedded in the movable cabinet. The pressure gauge and pressure regulating valve are connected to the furnace body via pipelines. The pressure regulating valve is externally connected to compressed air. The touch screen display is electrically connected to the power switch, start switch, and stop switch. The flow meter is connected between the pressure regulating valve and the air inlet.

[0008] The furnace body includes a heating section tube and a preheating section tube that together form an L-shape, a heater placed horizontally inside the preheating section tube, an exhaust port located at the top of the heating section tube, an air inlet and a sensor connector located on the preheating section tube, and an exhaust port located at the top of the heating section tube; the heater is electrically connected to a touch screen display; a temperature sensor is installed inside the sensor connector.

[0009] Furthermore, an electric heater end cap is provided at the end of the preheating section tube; the end of the heater is placed inside the electric heater end cap.

[0010] Furthermore, the feed inlet is located on the side near the end cover of the electric heater.

[0011] Furthermore, a material box cover is provided at the top of the heating section tube; the exhaust port and fiber fixing seat are provided on the material box cover.

[0012] Furthermore, the heater is a threaded electric heater.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention utilizes an L-shaped furnace body with a heater inside, through which air is introduced for pre-oxidation treatment. This invention pre-oxidizes small samples of pitch-based carbon fiber by precisely controlling the temperature, with the air preheated to the required temperature via flow metering. This invention has advantages such as simple structure and easy control, and possesses high practical and promotional value in the field of carbon fiber processing technology. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the furnace body in this utility model.

[0018] Figure 3 This is a cross-sectional schematic diagram of the furnace body in this utility model.

[0019] In the above figures, the component names corresponding to the reference numerals are as follows:

[0020] 1. Movable cabinet; 2. Furnace body; 3. Touch screen display; 4. Pressure gauge; 5. Pressure regulating valve; 6. Power switch; 7. Start switch; 8. Stop switch; 9. Flow meter; 21. Heating section pipe; 22. Preheating section pipe; 23. Electric heater end cover; 24. Air inlet; 25. Material bin cover; 26. Mounting base; 27. Sensor connector; 28. Heater; 29. ​​Exhaust port. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of this utility model include, but are not limited to, the following embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0022] In this embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0023] The terms "first" and "second," etc., used in the specification and claims of this embodiment are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.

[0024] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0025] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.

[0026] like Figures 1 to 3 As shown, this embodiment provides a carbon fiber pre-oxidation furnace for pre-oxidation treatment of small samples of pitch-based carbon fibers. It includes a movable cabinet 1, an L-shaped furnace body 2 housed within the movable cabinet 1, a touch screen display 3, a pressure gauge 4, a pressure regulating valve 5, a power switch 6, a start switch 7, a stop switch 8, and a flow meter 9 embedded in the movable cabinet 1. The pressure gauge 4 and pressure regulating valve 5 are connected to the furnace body 2 via pipelines, and the pressure regulating valve 5 is externally connected to compressed air. The flow meter 9 is connected between the pressure regulating valve 5 and the air inlet. Furthermore, the touch screen display 3 is electrically connected to the power switch 6, the start switch 7, and the stop switch 8.

[0027] In this embodiment, the furnace body 2 includes a heating section tube 21 and a preheating section tube 22 forming an L-shape, an electric heater end cap 23 disposed at the end of the preheating section tube 22, a heater 28 fixed at one end to the electric heater end cap 23 and placed horizontally inside the preheating section tube 22, a material box cover 25 disposed at the top of the heating section tube 21, an exhaust port 29 disposed on the material box cover 25, an air inlet 24 and a sensor connector 27 disposed on the preheating section tube 22, and a fixing seat 26 disposed on the material box cover 25. The heater 28 is electrically connected to the touch display screen 3 and is a threaded electric heater. The material inlet 24 is located on the side near the electric heater end cap 23. A temperature sensor is disposed inside the sensor connector 27.

[0028] In this embodiment, the material box cover 25 is opened, and the carbon fiber to be pre-oxidized is placed in the heating section tube 21; the air intake is regulated and controlled by the pressure regulating valve 5 and the flow meter 9; the heater 28 is used for reliable heating, and the preheating purpose is achieved in the preheating section tube 22. Then, the pre-oxidation process temperature is reached by external heating of the heating section tube. The purpose is to pre-oxidize the carbon fiber to be pre-oxidized in the heating section tube at different process times and constant temperatures. The pre-oxidation process of carbon fiber is existing technology and will not be described in detail here.

[0029] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any changes made based on the design principles of this utility model, or any non-creative changes made on this basis, shall fall within the scope of protection of this utility model.

Claims

1. A carbon fiber pre-oxidation furnace, characterized in that, The device includes a movable cabinet (1), an L-shaped furnace body (2) housed within the movable cabinet (1), a touch screen (3), a pressure gauge (4), a pressure regulating valve (5), a power switch (6), a start switch (7), a stop switch (8), and a flow meter (9) embedded in the movable cabinet (1); the pressure gauge (4) and the pressure regulating valve (5) are connected to the furnace body (2) by pipelines; the pressure regulating valve (5) is connected to compressed air; the touch screen (3) is electrically connected to the power switch (6), the start switch (7), and the stop switch (8); the flow meter (9) is connected between the air inlet (24) of the pressure regulating valve (5); The furnace body (2) includes a heating section tube (21) and a preheating section tube (22) that together form an L shape, a heater (28) placed horizontally in the preheating section tube (22), an exhaust port (29) set at the top of the heating section tube (21), an air inlet (24) and a sensor connector (27) set on the preheating section tube (22), and a fiber fixing seat (26) set at the top of the heating section tube (21); the heater (28) is electrically connected to the touch screen (3); a temperature sensor is set in the sensor connector (27).

2. The carbon fiber pre-oxidation furnace according to claim 1, characterized in that, An electric heater end cap (23) is provided at the end of the preheating section pipe (22); the end of the heater (28) is placed inside the electric heater end cap (23).

3. The carbon fiber pre-oxidation furnace according to claim 2, characterized in that, The air inlet (24) is located on the side near the end cover (23) of the electric heater.

4. A carbon fiber pre-oxidation furnace according to claim 1, 2, or 3, characterized in that, The top of the heating section tube (21) is provided with a material box cover (25); the fiber fixing seat (26) and the exhaust hole (29) are provided on the material box cover (25).

5. A carbon fiber pre-oxidation furnace according to claim 1, 2, or 3, characterized in that, The heater (28) is a threaded electric heater.

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