Carbon fiber felt activation furnace

Abstract

The invention discloses a carbon fiber felt activation furnace which comprises a feeding device, an activation furnace body and a receiving device which are arranged in sequence, a heat preservation layer is arranged on the inner side of the activation furnace body, a conveying assembly is arranged in the activation furnace body, and a plurality of air cavities are formed in the upper portion and the lower portion of the conveying assembly in the length direction of the activation furnace body correspondingly. The air cavity comprises a plurality of sub-air cavities arranged along the width direction of the activation furnace body, a heating rod penetrating through each sub-air cavity is arranged in the air cavity, an air inlet channel communicated with the sub-air cavities is arranged in the thermal insulation layer, and blowing holes for blowing air to the carbon fiber felt are formed in the sub-air cavities. The device has the advantages that no pressure loss exists between the blow holes, the number limitation of the blow holes is small, and the activation effect is good.

Description

Technical Field

[0001] This invention relates to the field of heat treatment equipment technology, and in particular to a carbon fiber felt activation furnace. Background Technology

[0002] Currently, most of China's carbon fiber felt is purchased from overseas, with some produced domestically through intermittent or continuous furnaces. However, existing intermittent furnaces suffer from low output and high production costs. Traditional continuous activation furnaces have a relatively fixed structure and outdated air intake methods, resulting in uneven activation of the felt surface during production, leading to poor and unstable product quality.

[0003] When carbon fiber felt undergoes activation treatment, water vapor or carbon dioxide is often used as the reactant gas. Traditional continuous activation furnaces typically use orifice-type gas inlet, with multiple stainless steel inlet pipes embedded within the furnace body. After entering the furnace, the reactant gas directly enters these stainless steel inlet pipes and is then blown into the furnace chamber through small holes in the pipes. Due to pressure loss in the pipes, there are few blowing points, and the flow distribution at the near and far ends of the pipes often differs significantly—more gas is blown in the near end, while less or no gas is blown in the far end. The reactant gas at the near end quickly activates the felt upon contact, while the felt at the far end, lacking reactant gas, exhibits low activation. This results in inconsistent activation effects on the felt surface, leading to poor product quality. Furthermore, the reactant gas entering the furnace directly through the pipes is not adequately preheated, resulting in temperature inconsistencies with the furnace chamber temperature, affecting furnace temperature uniformity and further exacerbating the differences in the degree of activation on the felt surface, thus impacting product quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a carbon fiber felt activation furnace with no pressure loss between air holes, less limitation on the number of air holes, and good activation effect.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A carbon fiber felt activation furnace includes a feeding device, an activation furnace body, and a receiving device arranged sequentially. The inner side of the activation furnace body is provided with a heat insulation layer. The activation furnace body is provided with a conveying assembly. Multiple air chambers are provided above and below the conveying assembly along the length direction of the activation furnace body. Each air chamber includes multiple sub-air chambers arranged along the width direction of the activation furnace body. A heating rod penetrating each sub-air chamber is provided in each air chamber. An air inlet channel communicating with the sub-air chamber is provided in the heat insulation layer. Each sub-air chamber is provided with an air blowing hole for blowing air into the carbon fiber felt.

[0006] As a further improvement to the above technical solution: The conveying assembly is provided with horizontal partitions above and below, and multiple vertical partitions are provided between the horizontal partitions and the insulation layer, arranged at intervals along the length of the activation furnace body. The air chamber is formed by the horizontal partitions, vertical partitions and the insulation layer, and the air blowing holes are opened on the horizontal partitions. Multiple partition plates are provided between two adjacent vertical partition plates, arranged at intervals along the width direction of the activation furnace body. The sub-gas chamber is formed by the enclosure of horizontal partition plates, vertical partition plates, partition plates and heat insulation layer.

[0007] The activation furnace body is provided with a plurality of support beams arranged at intervals along the length of the activation furnace body. The two ends of the support beams are embedded in the insulation layers on both sides. The upper horizontal partition is set on each of the support beams. The upper vertical partition and the upper dividing plate respectively abut against the top insulation layer and the horizontal partition.

[0008] The air blowing hole at the top is an oblique hole, and the air blowing direction is towards the support beam to disperse the blown process gas.

[0009] A receiving plate is provided between the conveying component and the air blowing hole below, and the receiving plate is used to disperse the process gas blown out of the air blowing hole.

[0010] The lower diaphragm is provided with support blocks arranged on both sides of the air blowing hole, and the receiving plate overlaps on the support blocks on both sides.

[0011] The activation furnace body is divided into multiple temperature zones along its length. Within a temperature zone, the number of sub-gas chambers of the upper gas chamber is 'a', and the number of sub-gas chambers of the lower gas chamber is 'a+1'. Within adjacent temperature zones, the number of sub-gas chambers of the upper gas chamber is 'a+1', and the number of sub-gas chambers of the lower gas chamber is 'a', where 'a' is a positive integer.

[0012] The conveying assembly includes multiple conveying rollers arranged along the length of the activation furnace body. A driving assembly is provided on the outside of the activation furnace body, and the driving assembly passes through the pre-activation furnace body and is connected to the conveying rollers.

[0013] The carbon fiber felt activation furnace also includes a piping system, which includes an air inlet pipe and an exhaust pipe. The air inlet pipe is connected to an air inlet channel, and the exhaust pipe is connected to an exhaust port at the top of the activation furnace body.

[0014] The outlet of the activation furnace is sealed to a cooling furnace, and the inlet of the activation furnace and the outlet of the cooling furnace are respectively sealed to a cleaning chamber. The cleaning chamber is equipped with a baffle assembly and an air curtain assembly.

[0015] Compared with the prior art, the advantages of the present invention are as follows: 1. In the carbon fiber felt activation furnace of the present invention, the process gas enters each sub-gas chamber independently from each air inlet channel. Each sub-gas chamber can be blown through the air blowing hole. Compared with the air inlet method, there is no pressure loss between the air blowing holes, resulting in a better activation effect. Furthermore, since there is no pressure loss between the air blowing holes, the number of air blowing holes is less limited, and more air blowing holes can be set. After the process gas is preheated, it is blown out of the sub-gas chamber, resulting in a more uniform temperature in the furnace and a better activation effect.

[0016] 2. The carbon fiber felt activation furnace of the present invention has a sub-gas chamber formed by a horizontal partition, a vertical partition, a partition plate and a heat insulation layer. The structure is simple, the sub-gas chamber is easy to build, and the heat insulation layer can be fully utilized, resulting in a compact layout.

[0017] 3. The carbon fiber felt activation furnace of the present invention supports the horizontal partition, vertical partition and partition plate above by the support beam, which makes it easier to build the sub-gas chamber. In addition, the support beam can support the top of the insulation layer through the horizontal partition, vertical partition and partition plate, so that the furnace top can be made into a flat top without the need to make an arched top, thereby reducing the space of the activation furnace body.

[0018] 4. In the carbon fiber felt activation furnace of the present invention, the process gas is blown from the upper sub-gas chamber through the inclined hole to the support beam. The process gas hits the support beam and disperses, activating the upper surface of the carbon fiber felt. The airflow has less impact on the atmosphere in the furnace and the activation effect is better. The support beam can not only support the partition and the heat insulation layer, but also disperse the process gas, making the structure more simplified.

[0019] 5. In the carbon fiber felt activation furnace of the present invention, the upper and lower sub-gas chambers are distributed in an odd-even staggered manner in the same temperature zone and in adjacent temperature zones, which prevents dead corners in the blowing and makes the blowing coverage more comprehensive and the activation effect better. Attached Figure Description

[0020] Figure 1 This is a side view of the carbon fiber felt activation furnace of the present invention.

[0021] Figure 2 This is a side sectional view of the activation section in the carbon fiber felt activation furnace of the present invention.

[0022] Figure 3 This is a front cross-sectional view of the activation section in the carbon fiber felt activation furnace of the present invention.

[0023] The labels in the diagram represent: 1. Feeding device; 2. Activation furnace body; 21. Insulation layer; 211. Air inlet channel; 22. Conveying assembly; 221. Conveying roller; 23. Air chamber; 231. Sub-air chamber; 232. Air blowing hole; 24. Horizontal partition; 25. Vertical partition; 26. Divider plate; 27. Support beam; 281. Support block; 28. Receiving plate; 3. Receiving device; 4. Heating rod; 5. Piping mechanism; 51. Air inlet pipe; 52. Exhaust pipe; 6. Drive assembly; 7. Cooling furnace body; 8. Cleaning chamber. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] like Figures 1 to 3As shown, the carbon fiber felt activation furnace of this embodiment includes a feeding device 1, an activation furnace body 2, and a receiving device 3 arranged in sequence. The inner side of the activation furnace body 2 is provided with a heat insulation layer 21. The activation furnace body 2 is provided with a conveying assembly 22. Multiple air chambers 23 are provided above and below the conveying assembly 22 along the length direction of the activation furnace body 2. Each air chamber 23 includes multiple sub-air chambers 231 arranged along the width direction of the activation furnace body 2. A heating rod 4 is provided in each sub-air chamber 231. An air inlet channel 211 communicating with the sub-air chamber 231 is provided in the heat insulation layer 21. An air blowing hole 232 for blowing air into the carbon fiber felt is provided on the sub-air chamber 231.

[0029] In this embodiment of the carbon fiber felt activation furnace, during production, the feeding device 1 unwinds multiple layers of carbon fiber felt into the activation furnace body 2, and is conveyed by the conveying component 22. When the carbon fiber felt passes through the activation furnace body 2, process gas enters the sub-gas chamber 231 through the gas inlet channel 211. After being heated by the heating rod 4 in the sub-gas chamber 231, it is blown from the blowing hole 232 onto the carbon fiber felt on the conveying component 22 to activate the carbon fiber felt. Finally, the end receiving device 3 winds the carbon fiber felt in layers, thus completing the activation process of the carbon fiber felt. In this embodiment of the carbon fiber felt activation furnace, the process gas enters each sub-gas chamber 231 independently from each air inlet channel 211. Each sub-gas chamber 231 can be blown through its blowing holes 232. Compared with the method of air inlet through pipes, there is no pressure loss between each blowing hole 232, resulting in a better activation effect. Furthermore, since there is no pressure loss between each blowing hole 232, the number of blowing holes 232 is less limited, and more blowing holes 232 can be set. After the process gas is preheated, it is blown out of the sub-gas chamber 231, resulting in a more uniform temperature inside the furnace and a better activation effect.

[0030] Furthermore, in this embodiment, horizontal partitions 24 are respectively provided above and below the conveying component 22. Multiple vertical partitions 25 are spaced apart between the horizontal partitions 24 and the insulation layer 21 along the length of the activation furnace body 2. The air chamber 23 is formed by the horizontal partitions 24, vertical partitions 25, and insulation layer 21, and air blowing holes 232 are opened on the horizontal partitions 24. Multiple partitions 26 are spaced apart between adjacent vertical partitions 25 along the width of the activation furnace body 2. The sub-air chamber 231 is formed by the horizontal partitions 24, vertical partitions 25, partitions 26, and insulation layer 21. The sub-air chamber 231, formed by the horizontal partitions 24, vertical partitions 25, partitions 26, and insulation layer 21, has a simple structure, facilitates the construction of the sub-air chamber 231, and can fully utilize the insulation layer 21, resulting in a compact layout.

[0031] Furthermore, in this embodiment, the activation furnace body 2 is provided with multiple support beams 27 spaced apart along the length of the activation furnace body 2. The two ends of the support beams 27 are embedded in the insulation layers 21 on both sides. The upper horizontal partitions 24 are provided on each support beam 27, and the upper vertical partitions 25 and upper dividing plates 26 respectively abut against the top insulation layer 21 and the horizontal partitions 24. The support beams 27 support the upper horizontal partitions 24, vertical partitions 25 and dividing plates 26, which facilitates the construction of the sub-gas chamber 231. In addition, the support beams 27 can support the top of the insulation layer 21 through the horizontal partitions 24, vertical partitions 25 and dividing plates 26, so that the furnace top can be made into a flat top without the need for an arched top, thereby reducing the space of the activation furnace body 2.

[0032] Furthermore, in this embodiment, the upper air blowing hole 232 is an oblique hole, and the air blowing direction is towards the support beam 27 to disperse the blown process gas. The process gas passes through the oblique hole from the upper sub-gas chamber 231 and is blown towards the support beam 27. The process gas disperses on the support beam 27, activating the upper surface of the carbon fiber felt. The airflow has less impact on the atmosphere inside the furnace, resulting in a better activation effect. The support beam 27 can both support the partition and the insulation layer 21 and disperse the process gas, making the structure more simplified.

[0033] Furthermore, in this embodiment, a receiving plate 28 is provided between the conveying component 22 and the lower air blowing hole 232. The receiving plate 28 is used to disperse the process gas blown out of the air blowing hole 232. The process gas passes from the lower sub-gas chamber 231 through the air blowing hole 232 and is blown onto the receiving plate 28. The process gas disperses on the receiving plate 28, activating the lower surface of the carbon fiber felt. The airflow has less impact on the atmosphere inside the furnace, resulting in a better activation effect.

[0034] Preferably, in this embodiment, the lower vertical partition 25 and the lower partition 26 are disposed on the bottom insulation layer 21, and the horizontal partition 24 is disposed on the vertical partition 25 and the partition 26. That is, the horizontal partition 24 is supported on the bottom insulation layer 21 by the vertical partition 25 and the partition 26, so that there is no need to set the support beam 27 below, and the structure is simple.

[0035] Furthermore, in this embodiment, the lower transverse partition 24 is provided with support blocks 281 arranged on both sides of the air blowing hole 232, and the receiving plate 28 overlaps on the support blocks 281 on both sides. The receiving plate 28 is set on the support blocks 281 in an overlapping manner, which is simple in structure and easy to assemble.

[0036] Furthermore, in this embodiment, the activation furnace body 2 is divided into multiple temperature zones along its length. Within one temperature zone, the number of sub-cavities 231 of the upper gas chamber 23 is 'a', and the number of sub-cavities 231 of the lower gas chamber 23 is 'a+1'. In adjacent temperature zones, the number of sub-cavities 231 of the upper gas chamber 23 is 'a+1', and the number of sub-cavities 231 of the lower gas chamber 23 is 'a', where 'a' is a positive integer. For example... Figure 3 As shown, this temperature zone has 3 sub-gas chambers 231 at the top and 4 sub-gas chambers 231 at the bottom. In adjacent temperature zones (not shown in the figure), there are 4 sub-gas chambers 231 at the top and 3 sub-gas chambers 231 at the bottom. This ensures that the upper and lower sub-gas chambers 231 are distributed in an odd-even staggered manner within the same temperature zone and in adjacent temperature zones, preventing dead zones in the blowing process, resulting in more comprehensive blowing coverage and better activation effect.

[0037] Furthermore, in this embodiment, the conveying assembly 22 includes a plurality of conveying rollers 221 arranged along the length of the activation furnace body 2. A driving assembly 6 is provided on the outer side of the activation furnace body 2, and the driving assembly 6 passes through the pre-activation furnace body 2 and is connected to the conveying rollers 221. The driving assembly 6 can provide power to drive the conveying rollers 221 to rotate in order to convey the carbon fiber felt. The structure is simple and reliable. The driving assembly 6 includes a drive motor, a chain, a drive shaft, and a connecting sleeve. The drive motor is fixedly installed on the outer side of the activation furnace body 2. The chain is wound between the drive motor and the drive shaft. The drive shaft is connected to the conveying rollers 221 through the connecting sleeve, thereby realizing the rotation of the conveying rollers 221.

[0038] Furthermore, in this embodiment, the carbon fiber felt activation furnace also includes a piping mechanism 5, which includes an air inlet pipe 51 and an exhaust pipe 52. The air inlet pipe 51 is connected to the air inlet channel 211, and the exhaust pipe 52 is connected to the exhaust port at the top of the activation furnace body 2. The exhaust pipe 52 is located at the top of the activation furnace body 2, and the exhaust gas in the furnace is drawn away by the fan at the end of the exhaust pipe 52. A float flow meter is provided between the air inlet pipe 51 and the air inlet channel 211, which allows for independent control of the air intake of each air path, resulting in uniform air output from each air path, more uniform activation, and better activation effect.

[0039] Furthermore, in this embodiment, the outlet of the activation furnace body 2 is sealed to a cooling furnace body 7, and the inlet of the activation furnace body 2 and the outlet of the cooling furnace body 7 are respectively sealed to a cleaning chamber 8. The cleaning chamber 8 is equipped with a baffle curtain assembly and an air curtain assembly. Under the dual action of the baffle curtain and the air curtain, the cleaning chamber 8 prevents outside air from entering the furnace chamber, ensuring the atmosphere inside the furnace.

[0040] Preferably, in this embodiment, the feeding device 1 includes an unwinding trolley and an unwinding traction frame, and the receiving device 3 includes a receiving traction mechanism and a receiving drum. During production, multi-layer carbon fiber felt is placed on the unwinding trolley and pushed to a designated area at the furnace head. It is fixed in position by the clamping arm of the unwinding traction frame. Then, the carbon fiber felt passes through the fixed roller and the traction shaft on the unwinding traction frame and enters the cleaning chamber 8 at the entrance of the activation furnace 2. Under the traction of the conveying roller 221 and the receiving traction mechanism at the furnace tail, it moves forward in the furnace. After the carbon fiber felt is activated, it is cooled down by the cooling furnace 7 and exits from the cleaning chamber 8 at the exit of the cooling furnace 7. After being layered by the receiving traction mechanism, it is collected by the receiving drum.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the spirit and technical essence of the present invention. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall still fall within the protection scope of the technical solutions of the present invention.

Claims

1. A carbon fiber felt activation furnace, characterized in that: The device includes a feeding device (1), an activation furnace body (2), and a receiving device (3) arranged in sequence. The inner side of the activation furnace body (2) is provided with a heat insulation layer (21). The activation furnace body (2) is provided with a conveying assembly (22). The conveying assembly (22) is provided with multiple air chambers (23) above and below along the length direction of the activation furnace body (2). The air chambers (23) include multiple sub-air chambers (231) arranged along the width direction of the activation furnace body (2). The air chambers (23) are provided with heating rods (4) that penetrate each sub-air chamber (231). The heat insulation layer (21) is provided with an air inlet channel (211) that communicates with the sub-air chambers (231). The sub-air chambers (231) are provided with air blowing holes (232) for blowing air into the carbon fiber felt.

2. The carbon fiber felt activation furnace according to claim 1, characterized in that: The conveying assembly (22) is provided with a horizontal partition (24) above and below it. A plurality of vertical partitions (25) are provided between the horizontal partition (24) and the insulation layer (21) along the length of the activation furnace body (2). The air chamber (23) is formed by the horizontal partition (24), the vertical partition (25) and the insulation layer (21). The air blowing hole (232) is opened on the horizontal partition (24). Between two adjacent vertical partitions (25), there are multiple partitions (26) spaced apart along the width direction of the activation furnace body (2). The sub-gas chamber (231) is formed by a horizontal partition (24), a vertical partition (25), a partition (26), and a heat insulation layer (21).

3. The carbon fiber felt activation furnace according to claim 2, characterized in that: The activation furnace body (2) is provided with a plurality of support beams (27) arranged at intervals along the length of the activation furnace body (2). The two ends of the support beams (27) are embedded in the insulation layers (21) on both sides. The upper horizontal partition (24) is set on each of the support beams (27). The upper vertical partition (25) and the upper partition plate (26) respectively abut against the top insulation layer (21) and the horizontal partition (24).

4. The carbon fiber felt activation furnace according to claim 3, characterized in that: The upper air hole (232) is an oblique hole and the air blowing direction is toward the support beam (27) to disperse the blown process gas.

5. The carbon fiber felt activation furnace according to claim 2, characterized in that: A receiving plate (28) is provided between the conveying component (22) and the air blowing hole (232) below, the receiving plate (28) being used to disperse the process gas blown out of the air blowing hole (232).

6. The carbon fiber felt activation furnace according to claim 5, characterized in that: The lower diaphragm (24) is provided with support blocks (281) arranged on both sides of the air hole (232), and the receiving plate (28) overlaps on the support blocks (281) on both sides.

7. The carbon fiber felt activation furnace according to claim 1, characterized in that: The activation furnace body (2) is divided into multiple temperature zones along its length. The number of sub-gas chambers (231) of the upper gas chamber (23) in a temperature zone is a, and the number of sub-gas chambers (231) of the lower gas chamber (23) is a+1. In adjacent temperature zones, the number of sub-gas chambers (231) of the upper gas chamber (23) is a+1, and the number of sub-gas chambers (231) of the lower gas chamber (23) is a, where a is a positive integer.

8. The carbon fiber felt activation furnace according to claim 1, characterized in that: The conveying assembly (22) includes a plurality of conveying rollers (221) arranged along the length of the activation furnace body (2). A driving assembly (6) is provided on the outside of the activation furnace body (2). The driving assembly (6) passes through the pre-activation furnace body (2) and is connected to the conveying rollers (221).

9. The carbon fiber felt activation furnace according to claim 1, characterized in that: The carbon fiber felt activation furnace also includes a pipe mechanism (5), which includes an air inlet pipe (51) and an exhaust pipe (52). The air inlet pipe (51) is connected to the air inlet channel (211), and the exhaust pipe (52) is connected to the exhaust port at the top of the activation furnace body (2).

10. The carbon fiber felt activation furnace according to any one of claims 1 to 9, characterized in that: The outlet of the activation furnace body (2) is sealed to a cooling furnace body (7), and the inlet of the activation furnace body (2) and the outlet of the cooling furnace body (7) are respectively sealed to a cleaning chamber (8). The cleaning chamber (8) is equipped with a curtain assembly and an air curtain assembly.

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