CN213739802U - Air-seal air return device for pre-oxygen furnace - Google Patents
Air-seal air return device for pre-oxygen furnace Download PDFInfo
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- CN213739802U CN213739802U CN202022414174.6U CN202022414174U CN213739802U CN 213739802 U CN213739802 U CN 213739802U CN 202022414174 U CN202022414174 U CN 202022414174U CN 213739802 U CN213739802 U CN 213739802U
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Abstract
The utility model discloses a gas seal return air device for pre-oxidation furnace, the induction cooker comprises a cooker bod, be provided with a plurality of layers of box in the furnace body, the box comprises box one and box two side by side, box one is being close to the central point of furnace body puts one side and is provided with a plurality of drill way one, box two is provided with mutually independent cavity one and cavity two, the upper and lower both sides of cavity one all are provided with drill way two, both sides are provided with a plurality of drill ways four and drill way three respectively around cavity two, cavity two with the bottom that box two correspond is provided with a plurality of pits. The utility model discloses a set up the pit structure in the bottom of box, can effectively increase the windage of the passageway (walking the silk passageway) that forms between the adjacent two-layer box, can improve the effect of atmoseal, form even return air, more effectual prevention stove internal high temperature toxic gas leaks.
Description
Technical Field
The utility model relates to a carbon fiber production facility technical field, more specifically relate to an air seal return air device for pre-oxidation furnace.
Background
In the production process of carbon fibers, carbon fiber precursors are firstly pre-oxidized through a pre-oxidation furnace, and multiple layers of hearths are required to be heated during pre-oxidation. The pre-oxidation reaction can be carried out after the hearth reaches a certain high temperature, and the wires need to continuously enter and exit from the high-temperature hearths, so that a plurality of transverse wire-moving channels are designed in the hearth, an air-seal air return device is arranged at a furnace mouth, uniform air return is formed, and the phenomenon that waste gas overflows from the channels to cause heat loss and waste gas pollution is avoided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a pre oxygen is atmoseal air return device for stove can improve the atmoseal effect, avoids gaseous and heat in the stove to leak.
In order to achieve the above purpose, the utility model provides a following technical scheme: the air-seal air return device for the pre-oxidation furnace comprises a furnace body, wherein a plurality of layers of boxes are arranged in the furnace body, each box consists of a first box and a second box which are arranged side by side, a plurality of first orifices are formed in one side, close to the central position of the furnace body, of the first box, the second box is provided with a first cavity and a second cavity which are mutually independent, second orifices are formed in the upper side and the lower side of the first cavity, a plurality of fourth orifices and a third orifice are formed in the front side and the rear side of the second cavity respectively, and a plurality of pits are formed in the bottoms of the second cavity and the second box, which correspond to each other.
The first box body and the second box body are arranged independently, the first box body is arranged close to the center direction of the furnace body, the second box body is arranged far away from the center direction of the furnace body, the first box body is provided with a cavity, and a plurality of first orifices are arranged on the side close to the center of the furnace body; the second box body is provided with two cavities, namely a first cavity and a second cavity, the second cavity is close to the first box body, and the front side and the rear side of the second cavity are respectively provided with a fourth orifice and a third orifice.
When the air-blowing device works, the first orifice is used for absorbing most of air blown to the end part of the furnace in the furnace, the part of air enters the cavity of the first box body through the first orifice, the third orifice and the fourth orifice are used for absorbing fresh air blown out from the first cavity and entering the furnace body and a small part of air from the center of the furnace body, and the part of air enters the second cavity through the third orifice and the fourth orifice. Set up a plurality of pit designs below every layer of box, can effectively increase the windage of the passageway of walking that forms between the adjacent box, blockked the hot-blast of furnace and overflowed, can improve the effect of atmoseal, more effectual prevention heat in the stove and waste gas leak, reduced calorific loss and exhaust pollution. Due to the air suction effect of the fan, stable negative pressure is formed in the furnace body, so that external fresh air easily enters the filament moving channel, and sufficient oxygen is provided for pre-oxidation reaction to contact with the filament bundles.
Furthermore, a tow channel is formed between two adjacent layers of the box bodies, and the second hole is communicated with the tow channel.
Furthermore, the second hole is perpendicular to the first cavity, namely perpendicular to the filament running direction of the filament bundles, and is used for supplementing fresh air into the furnace body, and the fresh air is ejected into the furnace body through the second hole after passing through the first cavity when in use.
Furthermore, the first cavity is provided with a fresh air inlet for supplementing fresh air.
Furthermore, the distance between the first box body and the second box body is set to be larger than or equal to 60mm, so that the air circulation is facilitated.
To sum up, the utility model discloses a set up the pit structure in the bottom of box, can effectively increase the windage of the passageway (walking the silk passageway) that forms between the adjacent two-layer box, can improve the effect of atmoseal, form even return air, more effectual prevention stove internal high temperature toxic gas leaks.
Drawings
FIG. 1 is a schematic view of the overall structure of the pre-oxidation furnace of the present invention;
FIG. 2 is a cross-sectional view of the structure A-A of FIG. 1;
fig. 3 and 4 are schematic structural views of part of the air-seal air returning device of the present invention;
description of the labeling: 1. a filter screen; 2. a heating device; 3. a fan; 4. a furnace body; 5. a wire moving channel; 6. an air-seal air return device; 7. a dispenser; 8. tow; 9. a fresh air inlet; 10. a first cavity; 11. a second cavity; 12. a second box body; 13. a first box body; 14. a second orifice; 15. a fourth orifice; 16. a third orifice; 17. a pit; 18. And a first opening.
Detailed Description
An embodiment of the air-sealed air returning device for a pre-oxygen furnace according to the present invention will be further described with reference to fig. 1 to 4.
The air-seal air return device for the pre-oxidation furnace comprises a furnace body 4, wherein a plurality of layers of boxes are arranged in the furnace body 4, each box consists of a first box 13 and a second box 12 which are arranged side by side, one side, close to the central position of the furnace body 4, of the first box 13 is provided with a plurality of orifices 18, the second box 12 is provided with a first cavity 10 and a second cavity 11 which are mutually independent, the upper side and the lower side of the first cavity 10 are respectively provided with an orifice two 14, the front side and the rear side of the second cavity 11 are respectively provided with a plurality of orifices four 15 and an orifice three 16, and the bottom of the second cavity 11 corresponding to the second box 12 is provided with a plurality of pits 17.
As shown in fig. 1 and 2, the air-sealed air returning devices 6 are symmetrically arranged at two ends of the pre-oxidation furnace, the fans 3 are arranged at two sides of the central position of the furnace body 4, the filter screen 1 and the heating device 2 are arranged between the fans 3 and the air-sealed air returning devices 6, the air volume generated by the fans 3 is distributed to two ends of the furnace body 4 through the distributor 7 arranged inside the furnace body 4, the air volume forms return air through the air-sealed air returning devices 6 and the fans 3, and the return air is circulated to the fans 3 after being heated by the heating device 2 after being filtered by the filter screen 1. According to the 8 layer requirements of the tows in the furnace body 4, the air-seal air return devices 6 can be overlapped, a channel passing through the tows 8 is reserved between two adjacent groups after the overlapping, and the tows 8 are turned back and forth in the furnace body 4 to realize multilayer heating.
As shown in fig. 3 and 4, the first box 13 and the second box 12 are independent from each other, the first box 13 is arranged close to the center of the furnace body 4, the second box 12 is arranged far away from the center of the furnace body 4, the first box 13 is provided with a cavity, and a plurality of first orifices 18 are arranged close to the center of the furnace body 4; the second box body 12 is provided with two cavities, namely a first cavity 10 and a second cavity 11, the second cavity 11 is close to the first box body 13, and the front side and the rear side of the second cavity 11 are respectively provided with a fourth orifice 15 and a third orifice 16.
When the furnace body is in work, the first opening 18 is used for absorbing most of wind blown to the end part of the furnace in the furnace, the part of wind enters the cavity of the first box body 13 through the first opening 18, the third opening 16 and the fourth opening 15 are used for absorbing fresh wind sprayed out of the first cavity 10 and entering the furnace body 4 and a small part of wind from the center of the furnace body 4, and the part of wind enters the second cavity 11 after passing through the third opening 16 and the fourth opening 15. Set up a plurality of pits 17 design below every layer of box, can effectively increase the windage of the passageway 5 of walking silk that forms between the adjacent box, blockked hot-blast the overflowing in the furnace, can improve the effect of atmoseal, more effectual prevention heat in the stove and waste gas leak, reduced calorific loss and exhaust pollution. Because the induced draft effect of fan 3 forms stable negative pressure in the furnace body 4 for outside new trend gets into easily and walks silk passageway 5, provides abundant oxygen and silk bundle 8 contact for the pre-oxidation reaction.
In the embodiment, a tow 8 channel is formed between two adjacent layers of the boxes, and the second orifice 14 is communicated with the tow 8 channel.
In this embodiment, preferably, the second orifice 14 is perpendicular to the first cavity 10, and the second orifice 14 is perpendicular to the first cavity 10, that is, perpendicular to the filament running direction of the filament bundle 8, and is used for supplementing fresh air into the furnace body 4, and when the furnace is used, the fresh air passes through the first cavity 10 and then is ejected out of the second orifice 14 to enter the furnace body 4.
Preferably, in this embodiment, the first cavity 10 is provided with a fresh air inlet 9 for supplying fresh air.
In this embodiment, preferably, the distance between the first box 13 and the second box 12 is greater than or equal to 60mm, which is beneficial to air circulation.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides an air seal return air device for pre-oxygen furnace which characterized in that: the furnace comprises a furnace body, wherein a plurality of layers of boxes are arranged in the furnace body, each box is composed of a first box and a second box which are parallel, a plurality of first orifices are formed in one side, close to the central position of the furnace body, of the first box, the second box is provided with a first cavity and a second cavity which are mutually independent, second orifices are formed in the upper side and the lower side of the first cavity, a plurality of fourth orifices and a third orifice are formed in the front side and the rear side of the second cavity respectively, and a plurality of pits are formed in the bottoms of the second cavity and the corresponding second box.
2. The air-seal air returning device for the pre-oxygen furnace as claimed in claim 1, which is characterized in that: and a tow channel is formed between two adjacent layers of the box bodies, and the second hole opening is communicated with the tow channel.
3. The air-seal air returning device for the pre-oxygen furnace as claimed in claim 2, characterized in that: the second hole is perpendicular to the first cavity.
4. The air-seal air returning device for the pre-oxygen furnace as claimed in claim 1, which is characterized in that: the first cavity is provided with a fresh air inlet.
5. The air-seal air returning device for the pre-oxygen furnace as claimed in claim 1, which is characterized in that: the distance between the first box body and the second box body is set to be larger than or equal to 60 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022414174.6U CN213739802U (en) | 2020-10-27 | 2020-10-27 | Air-seal air return device for pre-oxygen furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022414174.6U CN213739802U (en) | 2020-10-27 | 2020-10-27 | Air-seal air return device for pre-oxygen furnace |
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| Publication Number | Publication Date |
|---|---|
| CN213739802U true CN213739802U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022414174.6U Active CN213739802U (en) | 2020-10-27 | 2020-10-27 | Air-seal air return device for pre-oxygen furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775114A (en) * | 2022-03-03 | 2022-07-22 | 新创碳谷控股有限公司 | Gas seal device of pre-oxidation furnace |
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2020
- 2020-10-27 CN CN202022414174.6U patent/CN213739802U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775114A (en) * | 2022-03-03 | 2022-07-22 | 新创碳谷控股有限公司 | Gas seal device of pre-oxidation furnace |
| CN114775114B (en) * | 2022-03-03 | 2022-12-23 | 新创碳谷集团有限公司 | Gas seal device of pre-oxidation furnace |
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Address after: 1809 Jianhu Road, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Jinggong Integrated Technology Co.,Ltd. Address before: 312000 1809 Jianhu Road, Keqiao District, Shaoxing, Zhejiang Patentee before: ZHEJIANG JINGGONG SCIENCE & TECHNOLOGY Co.,Ltd. |