Flue smoke locking device for low-temperature carbonization furnace

Abstract

The utility model discloses a flue smoke locking device for a low-temperature carbonization furnace. The flue smoke locking device comprises a conveying flue and a smoke locking device, one side of the conveying flue is connected with a first nitrogen pipeline, and a switching valve is mounted on the first nitrogen pipeline; the smoke locking device is installed in the conveying flue and comprises a pair of combined clamping sleeves, a dispersing ring pipe is installed in the pair of combined clamping sleeves, a plurality of gas ejector pipes are fixedly connected to the dispersing ring pipe, a second nitrogen pipeline is installed on one combined clamping sleeve, and the end, away from the combined clamping sleeve, of the second nitrogen pipeline is inserted into the first nitrogen pipeline. Wherein one combined clamping sleeve is provided with a pair of fixing stud shafts, the other combined clamping sleeve is provided with a pair of rotating sleeve shafts, and the rotating sleeve shafts are rotationally arranged on the fixing stud shafts in a sleeving mode. According to the utility model, through the arrangement of corresponding mechanisms, when a worker cleans the flue, waste gas can be locked in the flue and is not easy to discharge, so that the waste gas is not easy to cause harm to the body of the worker and is not easy to pollute the environment.

Description

Technical Field

[0001] This utility model belongs to the field of flue smoke locking technology, specifically relating to a flue smoke locking device for a low-temperature carbonization furnace. Background Technology

[0002] Carbon fiber production involves multiple fields, and equipment research and development and production cover many technical aspects, making it complex and critical. Only a few domestic companies have mastered the research and development and production capabilities of key equipment, but in actual use, some equipment still has certain problems, and details need to be improved based on actual production operations.

[0003] The low-temperature carbonization furnace is one of the key pieces of equipment in the carbon fiber carbonization process. During the low-temperature carbonization stage, certain chemical reactions occur within the carbon fiber molecular chains, and some elements escape from the molecular chains in gaseous form, which is what the industry refers to as waste gas. This waste gas needs to be discharged from the furnace promptly. If it is not discharged in time, it will accumulate inside the furnace, contaminating the fibers and causing a severe decline in fiber performance. Furthermore, excessive accumulation of slag will significantly reduce the production cycle and increase production costs. The main discharge route for the waste gas is through a flue after being drawn by a fan. Because the waste gas condenses on the flue wall during discharge, forming slag, excessive slag buildup reduces the discharge space within the flue, leading to increased pressure and difficulty in smoke extraction. Therefore, production operators need to clean the flue regularly.

[0004] During flue cleaning, the cleaning port needs to be opened, at which point a large amount of exhaust gas will be discharged. During cleaning, this large amount of exhaust gas passes through the operating space and is collected by the exhaust hood before being discharged into the atmosphere. Personnel inevitably come into close, direct contact with this large amount of exhaust gas during the cleaning process. This exhaust gas contains small amounts of cyanide and sulfides, which are harmful to human health, and the concentrated discharge of large quantities of exhaust gas also impacts the environment.

[0005] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a flue gas locking device for a low-temperature carbonization furnace.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this utility model is to provide a flue smoke locking device for a low-temperature carbonization furnace, which can...

[0008] To achieve the above objectives, a specific embodiment of the present invention provides a flue smoke locking device for a low-temperature carbonization furnace, comprising: a conveying flue and a smoke locking device;

[0009] A first nitrogen pipeline is connected to one side of the conveying flue.

[0010] The smoke-locking device is installed inside the conveying flue. The smoke-locking device includes a pair of combined sleeves. A dispersion ring pipe is installed inside the pair of combined sleeves. Multiple jet pipes are fixedly connected to the dispersion ring pipe. A second nitrogen pipe is installed on one of the combined sleeves. The end of the second nitrogen pipe away from the combined sleeve is inserted into the first nitrogen pipe. A pair of grooves are carved on each of the pair of combined sleeves.

[0011] In one or more embodiments of this utility model, a switch valve is installed on the first nitrogen pipeline to control the opening and closing of the first nitrogen pipeline, thereby controlling whether the nitrogen transported in the first nitrogen pipeline can continue to be transported forward, and ensuring that the nitrogen does not leak.

[0012] In one or more embodiments of this utility model, one of the combined sleeves is equipped with a pair of fixed pin shafts, and the other combined sleeve is equipped with a pair of rotating sleeve shafts. The rotating sleeve shafts are rotatably sleeved on the fixed pin shafts. Through the fixed pin shafts and the rotating sleeve shafts, the pair of combined sleeves can be rotatably stacked together, thereby facilitating installation and disassembly and making it convenient for regular maintenance of the device.

[0013] In one or more embodiments of this utility model, threaded holes are drilled on a pair of fixing bolts to facilitate the screwing in of the fixing screws, thereby enabling multiple fixing screws to be inserted into the fixing holes on the conveying flue, thus achieving the fixing of a pair of combined sleeves.

[0014] In one or more embodiments of this utility model, a support bolt is installed on each pair of the combined sleeves, and a fixing screw is threaded onto the support bolt to fix the pair of combined sleeves in place so that they are not easy to shake or fall off.

[0015] In one or more embodiments of this utility model, the inner wall of the conveying flue is provided with a plurality of fixing holes that match the fixing screws, so as to facilitate the insertion of the fixing screws.

[0016] In one or more embodiments of this utility model, the first nitrogen pipe and the second nitrogen pipe are made of 304 stainless steel.

[0017] In one or more embodiments of this utility model, the angle range of the jet pipe is 30 degrees to 60 degrees downwards.

[0018] Compared with the prior art, this utility model, through the setting of a corresponding mechanism, enables workers to lock the exhaust gas inside the flue when cleaning it, making it difficult for the exhaust gas to be discharged, thus making it less likely to cause harm to the workers' health and less likely to pollute the environment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of a flue smoke-locking device for a low-temperature carbonization furnace according to one embodiment of the present invention;

[0021] Figure 2 for Figure 1 The structural diagram shown at point A in the middle;

[0022] Figure 3 This is an elevation view of a flue smoke locking device for a low-temperature carbonization furnace according to one embodiment of the present invention;

[0023] Figure 4 This is a top-view view of a flue smoke locking device for a low-temperature carbonization furnace according to one embodiment of the present invention;

[0024] Figure 5 for Figure 4 The structural diagram shown at point B in the middle;

[0025] Figure 6 This is a schematic diagram of the structure of the fixed bolt shaft and the rotating sleeve shaft in one embodiment of the present invention.

[0026] Explanation of key figure labels:

[0027] 1-Conveying flue, 101-First nitrogen pipeline, 102-Switch valve, 2-Flame lock device, 201-Combination sleeve, 202-Dispersion ring pipe, 203-Jet pipe, 204-Second nitrogen pipeline, 205-Groove, 206-Fixing bolt shaft, 207-Rotating sleeve shaft, 208-Support bolt, 209-Fixing screw, 210-Threaded hole. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0029] like Figures 1 to 6As shown, a smoke-locking device for a low-temperature carbonization furnace according to one embodiment of the present invention includes: a conveying flue 1 and a smoke-locking device 2.

[0030] like Figure 1 As shown, a first nitrogen pipeline 101 is connected to one side of the flue duct 1 for introducing nitrogen gas, thereby facilitating the spraying of nitrogen gas from multiple jet pipes 203 to achieve the effect of smoke containment. A switch valve 102 is installed on the first nitrogen pipeline 101 to control the opening and closing of the first nitrogen pipeline 101, thereby controlling whether the nitrogen gas transported in the first nitrogen pipeline 101 can continue to be transported forward, and ensuring that there is no nitrogen leakage.

[0031] like Figures 1 to 6 As shown, the smoke-locking device 2 is installed inside the conveying flue duct 1. The smoke-locking device 2 includes a pair of combined clamps 201 for fixing the dispersing ring pipe 202, preventing the dispersing ring pipe 202 from falling off. The combined clamps 201 are also folded in half to facilitate disassembly and installation, thus simplifying regular maintenance. The dispersing ring pipe 202 is installed inside the pair of combined clamps 201, for conveying nitrogen to multiple jet pipes 203 for ejection. Multiple jet pipes 203 are fixedly connected to the dispersing ring pipe 202. A second nitrogen pipe 204 is installed on one of the combined clamps 201, with the end of the second nitrogen pipe 204 away from the combined clamp 201 inserted into the first nitrogen pipe 101. The angle of the jet pipe 203 ranges from 30 degrees to 60 degrees downwards.

[0032] Specifically, each of the two combination card holders 201 has a pair of grooves 205, which allows the two combination card holders 201 to be folded up, thus facilitating disassembly and installation.

[0033] like Figures 1 to 6 As shown, one of the combination sleeves 201 is equipped with a pair of fixed pin shafts 206, and the other combination sleeve 201 is equipped with a pair of rotating sleeve shafts 207. The rotating sleeve shafts 207 are rotatably sleeved on the fixed pin shafts 206. Through the fixed pin shafts 206 and the rotating sleeve shafts 207, the pair of combination sleeves 201 can be rotatably stacked together, which facilitates installation and disassembly and facilitates regular maintenance of the device.

[0034] like Figures 1 to 5 As shown, a pair of fixing bolts 206 have threaded holes 210 to facilitate the screwing in of the fixing screws 209, allowing multiple fixing screws 209 to be inserted into the fixing holes on the conveying flue 1, thus securing the pair of combined sleeves 201. Each pair of combined sleeves 201 is equipped with a support bolt 208, on which a fixing screw 209 is threadedly connected to secure the pair of combined sleeves 201, preventing them from shaking or falling off.

[0035] The inner wall of the flue gas duct 1 has multiple fixing holes that match the fixing screws 209, facilitating the insertion of the fixing screws 209. The first nitrogen pipe 101 and the second nitrogen pipe 204 are made of 304 stainless steel.

[0036] In practical use, first insert the second nitrogen pipe 204 into the first nitrogen pipe 101, then rotate one of the combination sleeves 201 to make the pair of combination sleeves 201 horizontal, and then rotate multiple fixing screws 209 so that one end of the fixing screw 209 is inserted into the fixing hole on the conveying flue 1. At this time, open the switch valve 102, and the nitrogen delivered from the first nitrogen pipe 101 can first enter the second nitrogen pipe 204, then be delivered to the dispersion ring pipe 202 for dispersion, and finally be sprayed downward through multiple jet pipes 203, thereby achieving the effect of locking the flue gas and making it difficult for the flue gas to be discharged upward, so that the device can be disassembled, replaced and cleaned regularly.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flue gas locking device for a low-temperature carbonization furnace, characterized in that, include: A conveying flue, one side of which is connected to a first nitrogen pipeline; A smoke-locking device is installed inside the conveying flue. The smoke-locking device includes a pair of combined sleeves. A dispersion ring pipe is installed inside the pair of combined sleeves. Multiple air jet pipes are fixedly connected to the dispersion ring pipe. A second nitrogen pipe is installed on one of the combined sleeves. The end of the second nitrogen pipe away from the combined sleeve is inserted into the first nitrogen pipe. A pair of grooves are cut into each of the pair of combined sleeves.

2. The flue gas locking device for a low-temperature carbonization furnace according to claim 1, characterized in that, A switch valve is installed on the first nitrogen pipeline.

3. A flue gas locking device for a low-temperature carbonization furnace according to claim 1 or 2, characterized in that, One of the combined sleeves is equipped with a pair of fixed pin shafts, and the other combined sleeve is equipped with a pair of rotating sleeve shafts, the rotating sleeve shafts being rotatably sleeved on the fixed pin shafts.

4. The flue gas locking device for a low-temperature carbonization furnace according to claim 3, characterized in that, A threaded hole is drilled on the shaft of the pair of fixing bolts.

5. A flue gas locking device for a low-temperature carbonization furnace according to any one of claims 1, 2, and 4, characterized in that, Each of the two combination sleeves is equipped with a support bolt, and a fixing screw is threaded onto the support bolt.

6. A flue gas locking device for a low-temperature carbonization furnace according to claim 3, characterized in that, Each of the two combination sleeves is equipped with a support bolt, and a fixing screw is threaded onto the support bolt.

7. A flue gas locking device for a low-temperature carbonization furnace according to claim 5, characterized in that, The inner wall of the conveying flue has multiple fixing holes that match the fixing screws.

8. A flue gas locking device for a low-temperature carbonization furnace according to claim 6, characterized in that, The inner wall of the conveying flue has multiple fixing holes that match the fixing screws.

9. A flue gas locking device for a low-temperature carbonization furnace according to claim 1, characterized in that, The first and second nitrogen pipes are made of 304 stainless steel.

10. A flue gas locking device for a low-temperature carbonization furnace according to claim 1, characterized in that, The angle range of the jet pipe is 30-60 degrees downwards.

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