Horizontal transverse air supply type oxidation furnace

Abstract

The utility model discloses a horizontal transverse air supply type oxidation furnace which comprises a furnace body, an air blowing device and an air return device are arranged on the two sides of the furnace body respectively, at least one rectifying wall is arranged in the furnace body, the two sides of the rectifying wall are both precursor operation areas, and the rectifying wall comprises a plurality of supporting plates arranged in the precursor operation direction. A first rectification area and a second rectification area are arranged between every two adjacent supports, the first rectification areas are located on the front side of the blowing direction, the second rectification areas are located on the rear side of the blowing direction, a plurality of first rectification plates which are parallel to one another and are arranged at the same intervals are arranged in the first rectification areas, and a first rectification channel is formed between every two adjacent first rectification plates. A plurality of second rectifying plates which are parallel to one another and have the same distance are arranged in the second rectifying area, a second rectifying channel is formed between every two adjacent second rectifying plates, and a transition area is arranged between the first rectifying area and the second rectifying area, so that the operation quantity of the protofilaments is increased while the oxidation quality of the protofilaments is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon fiber oxidation furnaces, and more specifically relates to a horizontal cross-air supply type oxidation furnace. Background Art

[0002] In the production process of carbon fiber, an oxidation furnace is required. The carbon fiber roving enters from one end of the oxidation furnace and undergoes a chemical change through high-temperature oxidation inside the furnace. There is gas for oxidation heating inside the furnace, and the gas circulates inside the furnace. Currently, the circulation methods include horizontal cross-air supply, where the air supply direction is perpendicular to the running direction of the roving, horizontal longitudinal air supply, parallel to the running direction of the roving, and vertical air supply, generally from top to bottom perpendicular to the running direction of the roving.

[0003] Inside the furnace with horizontal cross-blowing, the blowing effect on the rovings on both sides of the furnace is different. That is, the just-blowed air is evenly horizontal, but after passing through multiple rovings on the same plane, a forward-moving eddy current will be formed, making it chaotic. Therefore, there will be a certain difference in the oxidation effect between the rovings far from the air outlet and those close to the air outlet. Currently, the common solution is to shorten the distance of horizontal cross-air supply, that is, to recycle and re-circulate the air before it becomes too chaotic. And shortening the air supply distance will inevitably reduce the number of rovings on the same horizontal plane. Therefore, in order to increase efficiency, the blowing device is set in the middle of the furnace and blows air to both sides, while the rovings are transported on both sides, as Figure 5 shown.

[0004] Although the rovings can be transported on both sides simultaneously, the number of rovings that can be transported is still less than that of horizontal longitudinal air supply and vertical air supply under the same furnace space. Therefore, the efficiency is lower than that of horizontal longitudinal air supply and vertical air supply oxidation furnaces. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a horizontal cross-air supply type oxidation furnace, which can improve the running quantity of rovings while ensuring the oxidation quality of rovings, and improve the production efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: a horizontal cross - blowing oxidation furnace, including a furnace body. Blowing devices and air return devices are respectively arranged on both sides of the furnace body. At least one rectifying wall is arranged inside the furnace body. Both sides of the rectifying wall are raw wire running areas. The rectifying wall includes a plurality of support plates arranged along the raw wire running direction. A first rectifying area and a second rectifying area are arranged between adjacent two supports. The first rectifying area is located on the front side of the blowing direction, and the second rectifying area is located on the rear side of the blowing direction. A plurality of first rectifying plates which are parallel to each other and have the same spacing are arranged in the first rectifying area. A first rectifying channel is formed between adjacent two first rectifying plates. A plurality of second rectifying plates which are parallel to each other and have the same spacing are arranged in the second rectifying area. A second rectifying channel is formed between adjacent two second rectifying plates. A transition area is arranged between the first rectifying area and the second rectifying area.

[0007] Further, the spacing between adjacent two first rectifying plates is less than the spacing between adjacent two second rectifying plates.

[0008] Further, each raw wire distributed vertically and horizontally in the raw wire running area on the rear side of the blowing direction of the second rectifying plate is located at the center of the second rectifying channel.

[0009] Further, the first rectifying plates and the second rectifying plates are parallel to each other.

[0010] Further, the first rectifying plates and the second rectifying plates are perpendicular to each other.

[0011] Further, the first rectifying area includes a first rectifying sub - area and a second rectifying sub - area. The first rectifying plates in the first rectifying sub - area and the first rectifying plates in the second rectifying sub - area are perpendicular to each other, and the first rectifying channels have the same spacing.

[0012] Further, the ends of the first rectifying plates and the second rectifying plates facing the blowing direction are pointed ends.

[0013] Further, the width of the raw wire running area on the front side of the rectifying wall facing the blowing direction is greater than the width of the raw wire running area on the rear side of the blowing direction.

[0014] Compared with the prior art, the beneficial effect of the utility model is: a rectifying wall is arranged inside the furnace body. When the horizontal wind blown out by the blowing device on one side of the furnace body passes through a certain width of the raw wire running area and then passes through the rectification of the rectifying wall, the disordered wind is rectified into horizontal wind again and blown to the next raw wire running area, so as to improve the running quantity of the raw wire while ensuring the oxidation quality of the raw wire and improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the internal structure of the horizontal cross - blowing oxidation furnace of the utility model;

[0016] Figure 2 This is a schematic side view of the rectifying wall in the horizontally laterally air-supplied oxidation furnace in the first embodiment of the present utility model;

[0017] Figure 3 This is a schematic side view of the rectifying wall in the horizontally laterally air-supplied oxidation furnace in the second embodiment of the present utility model;

[0018] Figure 4 This is a schematic side view of the rectifying wall in the horizontally laterally air-supplied oxidation furnace in the third embodiment of the present utility model;

[0019] Figure 5 This is a schematic internal structure view of a traditional horizontally laterally air-supplied oxidation furnace.

[0020] Reference numerals: furnace body 1; air-blowing device 2; air-returning device 3; rectifying wall 4; first rectifying area 5; second rectifying area 6; first rectifying plate 7; first rectifying channel 8; second rectifying plate 9; second rectifying channel 10; transition area 11; first small rectifying area 12; second small rectifying area 13; raw wire running area 14. Detailed implementation manners

[0021] In the description of the present utility model, it should be noted that for orientation terms, if there are terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and positional relationships are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0022] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meanings of "several" and "a number of" are two or more, unless otherwise specifically and clearly defined.

[0023] Refer to Figures 1 to 5 for further description of the present utility model.

[0024] A horizontal cross - blowing oxidation furnace includes a furnace body 1. Blowing devices 2 and return air devices 3 are respectively arranged on both sides of the furnace body 1. At least one rectifying wall 4 is arranged inside the furnace body 1. Both sides of the rectifying wall 4 are raw silk running areas 14. The rectifying wall 4 includes a plurality of support plates arranged along the raw silk running direction. A first rectifying area 5 and a second rectifying area 6 are arranged between adjacent two supports. The first rectifying area 5 is located on the front side of the blowing direction, and the second rectifying area 6 is located on the rear side of the blowing direction. A plurality of first rectifying plates 7 which are parallel to each other and have the same spacing are arranged in the first rectifying area 5. A first rectifying channel 8 is formed between adjacent two first rectifying plates 7. A plurality of second rectifying plates 9 which are parallel to each other and have the same spacing are arranged in the second rectifying area 6. A second rectifying channel 10 is formed between adjacent two second rectifying plates 9. A transition area 11 is arranged between the first rectifying area 5 and the second rectifying area 6.

[0025] As Figures 1 to 4 shown, a rectifying wall 4 is arranged inside the furnace body 1. When the horizontal wind blown out by the blowing device 2 on one side of the furnace body 1 passes through the raw silk running area 14 with a certain width and then passes through the rectification of the rectifying wall, the disordered wind is rectified into horizontal wind again and blown to the next raw silk running area 14, so as to improve the running quantity of the raw silk while ensuring the oxidation quality of the raw silk and improving the production efficiency.

[0026] As Figures 2 to 4 shown, preferably in this embodiment, the spacing between adjacent two first rectifying plates 7 is less than the spacing between adjacent two second rectifying plates 9, that is, the first rectifying plates 7 are arranged more densely and the second rectifying plates 9 are arranged more sparsely.

[0027] Specifically, the disordered wind is first preliminarily rectified through the first rectifying area 5 with the first rectifying plates 7 arranged more densely, and then re - rectified through the second rectifying area 6 with the second rectifying plates 9 arranged more sparsely while evenly distributing the wind into each second rectifying channel 10 to improve the rectifying effect.

[0028] As Figures 2 to 4 shown, preferably in this embodiment, each raw silk distributed vertically and horizontally in the raw silk running area 14 on the rear side of the blowing direction of the second rectifying plate 9 is located at the center of the second rectifying channel 10 to ensure that each raw silk receives parallel and uniform wind.

[0029] As Figure 2 shown, preferably in this embodiment, the first rectifying plates 7 and the second rectifying plates 9 are parallel to each other.

[0030] As Figures 2 to 4 shown, preferably in this embodiment, the ends of the first rectifying plates 7 and the second rectifying plates 9 facing the blowing direction are pointed tips. Through the pointed tips, it is ensured that the wind is divided to both sides by the rectifying plates, and the disordered wind can be scattered through the pointed tips.

[0031] As Figure 1 shown, in this embodiment, preferably, the width of the raw silk running area 14 on the front side of the rectifying wall 4 facing the blowing direction is greater than the width of the raw silk running area 14 on the rear side of the blowing direction, that is, the width of the raw silk running area 14 closer to the blowing device 2 is larger. Because the closer to the blowing device 2, the longer the blown air can maintain horizontal uniformity. After a certain distance, the air begins to become chaotic. Since the rectifying wall 4 has no power, the time for the rectified air to maintain horizontal uniformity will decrease. Therefore, in order to ensure that all raw silk can receive relatively horizontal and uniform air, it is necessary to gradually reduce the width of the raw silk running area 14 to ensure the effect of the rectified air.

[0032] Embodiment 2:

[0033] As Figure 3 shown, in this embodiment, preferably, the first rectifying plate 7 and the second rectifying plate 9 are perpendicular to each other.

[0034] Other technical features in this embodiment are the same as those in Embodiment 1.

[0035] Embodiment 3:

[0036] As Figure 4 shown, in this embodiment, preferably, the first rectifying area 5 includes a first rectifying sub-area 12 and a second rectifying sub-area 13. The first rectifying plates 7 in the first rectifying sub-area 12 and the first rectifying plates 7 in the second rectifying sub-area 13 are perpendicular to each other, and the spacing of the first rectifying channels 8 is the same.

[0037] Specifically, the rectifying effect is better by using two mutually perpendicular first rectifying plates 7.

[0038] Other technical features in this embodiment are the same as those in Embodiment 1.

[0039] Embodiment 4:

[0040] When at least two rectifying walls 4 are arranged inside the furnace body 1, each rectifying wall 4 can alternately use the arrangement structures of the first rectifying plate 7 and the second rectifying plate 9 in Embodiment 1, Embodiment 2, and Embodiment 3, and the arrangement structures of the first rectifying plate 7 and the second rectifying plate 9 in Embodiment 3 are arranged in the last rectifying wall 4 on the rear side of the blowing direction.

[0041] Other technical features in this embodiment are the same as those in Embodiment 1.

[0042] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A horizontal cross-flow air supply oxidation furnace, characterized in that: It includes a furnace body, with a blowing device and a return air device respectively arranged on both sides of the furnace body. At least one rectifying wall is arranged inside the furnace body. Both sides of the rectifying wall are raw silk running areas. The rectifying wall includes a number of support plates arranged along the raw silk running direction. A first rectifying area and a second rectifying area are arranged between adjacent two supports. The first rectifying area is located on the front side of the blowing direction, and the second rectifying area is located on the rear side of the blowing direction. A number of first rectifying plates that are parallel to each other and have the same spacing are arranged in the first rectifying area. A first rectifying channel is formed between adjacent two first rectifying plates. A number of second rectifying plates that are parallel to each other and have the same spacing are arranged in the second rectifying area. A second rectifying channel is formed between adjacent two second rectifying plates. A transition area is arranged between the first rectifying area and the second rectifying area.

2. The horizontal cross-flow type oxidation furnace according to claim 1, characterized in that: The spacing between adjacent two first rectifying plates is smaller than the spacing between adjacent two second rectifying plates.

3. The horizontal cross-flow air supply type oxidation furnace according to claim 1, characterized in that: Each raw silk distributed vertically and horizontally in the raw silk running area on the rear side of the blowing direction of the second rectifying plate is located at the center of the second rectifying channel.

4. The horizontal cross-flow type oxidation furnace according to claim 1, characterized in that: The first rectifying plate and the second rectifying plate are parallel to each other.

5. The horizontal cross-flow type oxidation furnace according to claim 1, characterized in that: The first rectifying plate and the second rectifying plate are perpendicular to each other.

6. The horizontal cross-flow air supply type oxidation furnace according to claim 1, wherein: The first rectifying area includes a first rectifying sub-area and a second rectifying sub-area. The first rectifying plates in the first rectifying sub-area and the first rectifying plates in the second rectifying sub-area are perpendicular to each other, and the spacing of the first rectifying channels is the same.

7. The horizontal cross-flow type oxidation furnace according to claim 1, characterized in that: The ends of the first rectifying plate and the second rectifying plate facing the blowing direction are pointed tips.

8. The horizontal cross-flow type oxidation furnace according to claim 1, wherein: The width of the raw silk running area on the front side of the blowing direction of the rectifying wall is greater than the width of the raw silk running area on the rear side of the blowing direction.

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