Low-temperature carbonization furnace mouth waste discharge filtering and cleaning auxiliary device for carbon fiber production

Abstract

A low-temperature carbonization furnace mouth waste discharge filtering and cleaning auxiliary device for carbon fiber production relates to the field of carbon fiber production equipment and comprises a box body, a filter screen, a slide rail, a pressure sensor, an alarm lamp and a nitrogen pipeline, the box body is of a cuboid structure, a reserved hole is formed in the top of the box body, the inner walls of the two sides of the long edge of the box body are fixedly connected with one side of the slide rail respectively, and the pressure sensor is arranged in the reserved hole. The sliding rails are higher than wires, the tops of the two ends of each sliding rail are each provided with a pressure sensor, the filter screen is of a cuboid structure, the size of the filter screen is the same as the inner diameter of the box body, the bottom of the filter screen movably makes contact with the pressure sensors, and one end of the nitrogen pipeline is connected and communicated with one side wall of the box body. The height of one end of the nitrogen pipeline is consistent with that of the filter screen in the box body, broken filaments are attached to the filter screen through the filter screen and prevented from entering a waste discharge pipeline, and when pyrolysis products pass through the filter screen, the pyrolysis products are cooled through the nitrogen pipeline, so that tar and carbon residues generated after the pyrolysis products are cooled are attached to the filter screen in time.

Description

Technical Field

[0001] The utility model relates to the field of carbon fiber production equipment, in particular to a low-temperature carbonization furnace outlet waste filtering and cleaning auxiliary device for carbon fiber production. Background Art

[0002] The carbonization equipment is one of the core technologies in the carbonization process of carbon fiber production equipment, which is an important factor related to the continuous production of carbon fiber and the quality of the product. In the carbon fiber production process, the carbon fiber filaments react and decompose in the low-temperature carbonization furnace to release a large amount of pyrolysis products. The gas components of the pyrolysis products include CO, CO2, HCN, NH3, N2 and other harmful substances. These pyrolysis product flue gases and the hair fibers brought out of the furnace are drawn out of the furnace through the negative pressure suction of the furnace mouth and enter the upper end of the waste pipe outside the furnace for treatment. Since the temperature outside the furnace mouth and the waste pipe are significantly lower than the temperature inside the furnace, the pyrolysis product flue gas mixed with the hair fibers condenses in the waste pipe to form tar carbon residue and the fabric adheres to the pipe wall. When the tar and carbon residue accumulate to a certain amount, they will fall onto the running carbon fiber filaments, causing the tow to break or apparent damage, seriously affecting the quality of the finished product and normal production. Utility Model Content

[0003] The purpose of the utility model is to provide a low-temperature carbonization furnace outlet waste filtering and cleaning auxiliary device for carbon fiber production to solve the above problems.

[0004] In order to achieve the above objectives, the following technical solutions are provided:

[0005] A low-temperature carbonization furnace outlet waste filtration and cleaning auxiliary device for carbon fiber production, used in conjunction with a filament bundle, is used to adsorb a large amount of pyrolysis products generated by the reaction and decomposition of the filament bundle in the low-temperature carbonization furnace, comprising: a waste discharge pipeline, a launch mechanism, a box, a filter, a slide rail, a pressure sensor, an alarm light, and a nitrogen pipeline. The waste discharge pipeline is a combination of a trumpet structure and a straight tube structure. The waste discharge pipeline is located directly above the filament bundle. The launch mechanism can launch the filament bundle outward. The launch mechanism is at the same height as the filament bundle hole. The box is a rectangular parallelepiped structure. A reserved hole is provided on the top of the box, and its diameter is the same as that of the straight tube structure at the top of the waste discharge pipeline. , the exhaust pipe horn structure passes through the reserved hole to the inside of the box, the outer wall of the exhaust pipe is sealed with the box, and the long sides of the inner walls on both sides of the box are fixedly connected to a slide rail, the height of the slide rail is higher than the height of the wire bundle, and a pressure sensor is provided on the top surface of each of the two ends of the slide rail. The four corners of the bottom of the filter are in contact with the top surface of the pressure sensor. The filter is a rectangular mesh structure, and its size is the same as the inner diameter of the box. One end of the nitrogen pipe is connected to and passes through one side wall of the box, and the air outlet height of one end of the nitrogen pipe is consistent with the height of the filter in the box. The alarm light is provided on the outer wall of the box, and the alarm light is electrically connected to the pressure sensor;

[0006] Preferably, a tow hole is provided on the other side wall of the box body, the height of which is consistent with the height of the tow, and the tow passes through the tow hole to the outside of the box body;

[0007] Preferably, one side of the box is fixedly connected to the nitrogen detector and is arranged above the slide rail, and a float flowmeter is provided on the nitrogen pipeline;

[0008] Preferably, a handle is provided on one side of the short side of the filter, and the handle is a rectangular parallelepiped frame structure and is made of rubber;

[0009] The beneficial effects of the utility model are as follows: when the tow passes through the waste discharge pipeline, a large amount of pyrolysis products are adsorbed into the interior through the waste discharge pipeline, and the hair fibers are attached to the filter through the filter to prevent them from entering the waste discharge pipeline. When the pyrolysis products pass through the filter, they are cooled by the nitrogen pipeline, so that the tar and carbon residue generated after cooling are promptly adhered to the filter. The filter is monitored in real time by a pressure sensor. When there is too much waste, the alarm light prompts the operator to replace the filter in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the main view of the utility model;

[0011] Figure 2 This is a three-dimensional diagram of the internal structure of the box of the utility model;

[0012] Figure 3 This is a side view of the utility model;

[0013] Figure 4 This is the structure diagram of the filter screen of the utility model;

[0014] The reference numerals shown in the figure are: 1 waste discharge pipeline, 2 tow, 201 launching mechanism, 3 box, 301 reserved hole, 4 filter, 401 handle, 5 slide rail, 6 pressure sensor, 7 alarm light, 8 nitrogen pipeline, 801 air outlet, 9 tow hole, 10 nitrogen detector, 11 float flowmeter. DETAILED DESCRIPTION

[0015] The following is a detailed description of this design scheme with reference to the accompanying drawings.

[0016] It is used in conjunction with the filament bundle 2 to adsorb a large amount of pyrolysis products generated by the reaction and decomposition of the filament bundle 2 in the low-temperature carbonization furnace. It is characterized by comprising: a waste discharge pipeline 1, a launching mechanism 201, a box body 3, a filter screen 4, a slide rail 5, a pressure sensor 6, an alarm light 7 and a nitrogen pipeline 8. The waste discharge pipeline 1 is a combination of a trumpet structure and a straight cylinder structure. The waste discharge pipeline 1 is arranged directly above the filament bundle 2. The launching mechanism 201 can launch the filament bundle 2 outward. The launching mechanism 201 has the same height as the hole of the filament bundle 2. The box body 3 is a rectangular parallelepiped structure. A reserved hole 301 is provided on the top of the box body 3. The diameter of the hole 301 is the same as the diameter of the straight cylinder structure on the upper part of the waste discharge pipeline 1. The speaker structure of line 1 passes through the reserved hole 301 to the inside of the box 3, the outer wall of the waste pipe 1 is sealed with the box 3, and a slide rail 5 is fixedly connected to the long sides of the inner walls on both sides of the box 3. The height of the slide rail 5 is higher than the height of the tow 2. A pressure sensor 6 is provided on the top surface of each end of the slide rail 5. The four corners of the bottom of the filter screen 4 are in contact with the top surface of the pressure sensor 6. The filter screen 4 is a rectangular mesh structure, and its size is the same as the inner diameter of the box 3. One end of the nitrogen pipe 8 is connected to and passes through one side wall of the box 3. The gas outlet height of one end of the nitrogen pipe 8 is consistent with the height of the filter screen 4 in the box 3. The alarm light 7 is provided on the outer wall of the box 3, and the alarm light 7 is electrically connected to the pressure sensor 6;

[0017] In some embodiments, a tow hole 9 is provided on the other side of the box body 3, and its height is consistent with the height of the tow 2. The tow 2 passes through the tow hole 9. This device does not affect the normal operation of the tow 2.

[0018] In some embodiments, one side of the box body 3 is fixedly connected to a nitrogen detector 10 and is provided above the gas outlet 801 on one side of the nitrogen pipeline 8. A float flowmeter 11 is provided on the nitrogen pipeline 8. The nitrogen detector 10 detects when the nitrogen output is insufficient, and the nitrogen flow rate is detected by the float flowmeter 11 to find out the cause of the nitrogen deficiency.

[0019] In some embodiments, a handle 401 is provided on one side of the short side of the filter 4. The handle 401 is a rectangular parallelepiped frame structure made of rubber material for anti-slip and wear-resistant.

[0020] Working principle:

[0021] The box body 3 is located directly below the waste discharge pipeline 1. The filament bundle 2 passes through the filament bundle hole 9 provided on one side of the box body 3 so as not to affect the operation of the filament bundle 2. When the waste discharge pipeline 1 starts to work and absorbs a large amount of pyrolysis products, the hair produced by the filament bundle 2 passes through the filter 4 to prevent it from entering the waste discharge pipeline 1. When a large amount of pyrolysis product gas passes through the filter 4, the nitrogen pipe 8 provided on one side of the box body 3 releases nitrogen to cool the pyrolysis product gas, causing it to quickly condense and adhere to the filter 4. The pressure sensor 6 provided at the bottom of the filter 4 monitors the tar and carbon residue attached to the filter 4 in real time. When the pressure is too high, the alarm light 7 reminds the operator to replace the filter 4 in time, and the filter 4 is limited by the slide rail 5. A nitrogen detector 10 is provided in the box body 3 to detect nitrogen. When the nitrogen output is insufficient, the nitrogen flow rate is detected by the float flowmeter 11 to find out the cause of the nitrogen deficiency.

[0022] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0023] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low-temperature carbonization furnace outlet waste filtration and cleaning auxiliary device for carbon fiber production, used in conjunction with a tow, for adsorbing a large amount of pyrolysis products generated by the reaction and decomposition of the tow in the low-temperature carbonization furnace, characterized in that: include: Waste discharge pipeline, launching mechanism, box, filter, slide rail, pressure sensor, alarm light and nitrogen pipeline, the waste discharge pipeline is a combination of a bell-mouth structure and a straight-tube structure, the waste discharge pipeline is arranged just above the tow, the launching mechanism is at the same height as the tow hole, the box is a rectangular parallelepiped structure, a reserved hole is provided on the top of the box, and its diameter is the same as that of the straight-tube structure on the waste discharge pipeline, the bell-mouth structure of the waste discharge pipeline passes through the reserved hole to the inside of the box, the outer wall of the waste discharge pipeline is sealed with the box, and the box A slide rail is fixedly connected to the long sides of the inner walls on both sides of the body, and the height of the slide rail is higher than the height of the filament bundle. A pressure sensor is provided on the top surfaces of both ends of each slide rail. The four corners of the bottom of the filter are in contact with the top surface of the pressure sensor. The filter is a rectangular mesh structure, and its size is the same as the inner diameter of the box. One end of the nitrogen pipeline is connected to and passes through one side wall of the box. The air outlet height of one end of the nitrogen pipeline is consistent with the height of the filter in the box. The alarm light is provided on the outer wall of the box, and the alarm light is electrically connected to the pressure sensor.

2. The auxiliary device for filtering and cleaning waste from a low-temperature carbonization furnace for carbon fiber production according to claim 1, characterized in that: A tow hole is provided on the other side wall of the box body, the height of which is consistent with the height of the tow, and the tow passes through the tow hole to the outside of the box body.

3. The auxiliary device for filtering and cleaning waste from a low-temperature carbonization furnace for carbon fiber production according to claim 1, characterized in that: One side of the box is fixedly connected to the nitrogen detector and is arranged above the air outlet at one end of the nitrogen pipeline. A float flowmeter is provided on the nitrogen pipeline.

4. The auxiliary device for filtering and cleaning waste from a low-temperature carbonization furnace for carbon fiber production according to claim 1, characterized in that: A handle is provided on one side of the short side of the filter screen. The handle is a rectangular parallelepiped frame structure and is made of rubber.

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