CN212293673U - Nitrogen recycling device for use in heat preservation period of bell-type annealing furnace - Google Patents
Nitrogen recycling device for use in heat preservation period of bell-type annealing furnace Download PDFInfo
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- CN212293673U CN212293673U CN202020592441.6U CN202020592441U CN212293673U CN 212293673 U CN212293673 U CN 212293673U CN 202020592441 U CN202020592441 U CN 202020592441U CN 212293673 U CN212293673 U CN 212293673U
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- nitrogen
- annealing furnace
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- pipeline
- heat preservation
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 177
- 238000000137 annealing Methods 0.000 title claims abstract description 45
- 238000004321 preservation Methods 0.000 title claims abstract description 29
- 229910052757 nitrogen Inorganic materials 0.000 title claims description 73
- 238000004064 recycling Methods 0.000 title claims description 26
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 229920000742 Cotton Polymers 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007787 solid Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000002829 nitrogen Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model discloses an utilize bell jar formula annealing furnace heat preservation period nitrogen gas circulation operative installations, including bell jar formula annealing furnace body and nitrogen gas circulation processing case, fixedly connected with intake pipe between bell jar formula annealing furnace body and the nitrogen gas circulation processing case, nitrogen gas circulation processing roof portion fixed mounting has cooling module, the inside solid top of nitrogen gas circulation processing incasement portion installs the deoxidization subassembly, bell jar formula annealing furnace body one side and nitrogen gas circulation processing case one side fixedly connected with edulcoration subassembly, cooling module includes trunk line and condenser pipe, the condenser pipe is provided with six groups, and condenser pipe one end and trunk line communicate with each other and connect, the condenser pipe is kept away from trunk line one end and is run through and extend to nitrogen gas circulation processing incasement, and the condenser pipe is located nitrogen gas circulation processing incasement one end fixed mounting and has high pressure nozzle, the deoxidization subassembly includes first pipeline, oxygen removal subassembly, The second pipeline and the U-shaped pipe save 50% of energy and reduce production cost.
Description
Technical Field
The utility model relates to an annealing furnace technical field, concretely relates to utilize bell jar formula annealing furnace heat preservation period nitrogen gas cyclic utilization device.
Background
The bell-type annealing furnace comprises a furnace platform, an inner cover, a heating cover, a cooling system and a microcomputer high-precision automatic furnace temperature control. The cover type annealing furnace is provided with two furnace platforms, two inner covers and a heating cover. When one furnace platform is heated and insulated, the other furnace platform is in the cooling and discharging process, the heating cover alternately heats 2 furnace platforms, so that the energy consumption can be saved, and the continuous production can be realized. The equipment adopts strict sealing between the heat-resistant stainless steel bell jar and the furnace platform to isolate the workpiece material from the outside air, and the workpiece material is always protected by high-purity nitrogen and hydrogen gas in the processes of heating, heat preservation and cooling, so that the surface of the annealing material is kept bright and is not oxidized. In addition, because the high-strength convection fan is arranged in the furnace, the atmosphere in the furnace forms strong convection circulation, the temperature of the furnace is uniform, and the temperature difference of each point in the furnace can be controlled within +/-3 ℃, so that the annealing material can obtain uniform and consistent physical and mechanical properties.
Wherein, after material and nitrogen gas got into the transfer bin, carry out gas-solid separation, the gas pressure after the separation is pressure slightly roughly, dusty nitrogen gas filters the discharge through the dust remover at feed bin top, nitrogen gas after the transport is evacuated after dust removal purification, because of nitrogen gas preparation system energy consumption is higher (according to producing the compressed air that 2.5-3m were planted in the year of nitrogen gas of 1mm high purity 99%, and the electric consumption of retrieving 1m nitrogen gas of high purity 99% of bearing down the year is about 50% of nitrogen gas of production.
Therefore, the nitrogen recycling device for the heat preservation period of the bell-type annealing furnace is provided, a group of nitrogen recovery devices are arranged, the power consumption for recovering the nitrogen with the purity of 99% in 1m is about 50% of that for producing the nitrogen, 50% of energy is saved, and the production cost is reduced; and the waste nitrogen gas to be emptied after purification is internally provided with dust with the diameter of about 13 mu m, has great influence on the environment, and can eliminate the pollution to the air by completely recycling the waste nitrogen gas.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an utilize bell jar formula annealing furnace heat preservation period nitrogen gas recycling device, improve the purity of retrieving nitrogen gas, retrieve nitrogen gas, prevent that the dust from getting into the atmosphere to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a nitrogen recycling device for utilizing the heat preservation period of a bell-type annealing furnace comprises a bell-type annealing furnace body and a nitrogen recycling treatment box, wherein an air inlet pipe is fixedly connected between the bell-type annealing furnace body and the nitrogen recycling treatment box;
the cooling assembly comprises a main pipeline and six groups of condensation pipes, one ends of the condensation pipes are communicated and connected with the main pipeline, one ends of the condensation pipes, far away from the main pipeline, penetrate through and extend into the nitrogen circulating treatment box, and one ends of the condensation pipes, located in the nitrogen circulating treatment box, are fixedly provided with high-pressure spray heads;
the deoxygenation assembly comprises a first pipeline, a second pipeline and a U-shaped pipe, the U-shaped pipe is fixedly installed at one end of the bottom of the first pipeline and one end of the bottom of the second pipeline, the first pipeline, the second pipeline and the U-shaped pipe are communicated, and a liquid discharge pipe is arranged at the bottom in the U-shaped pipe;
the impurity removal component comprises two groups of exhaust pipes and a filter plate, and the filter plate is fixedly arranged between the two groups of exhaust pipes.
Preferably, the bottom of the nitrogen circulating treatment box is fixedly provided with a bottom plate, and four corners of the bottom plate are fixedly provided with supporting legs.
Preferably, the inner walls of the nitrogen circulating treatment box are provided with heat preservation cotton layers.
Preferably, one end of the air inlet pipe is fixedly connected to the top of the bell-type annealing furnace body, and the other end of the air inlet pipe is fixedly connected to one end of the first pipeline.
Preferably, one end, far away from the U-shaped pipe, of the second pipeline penetrates through one side of the nitrogen circulating treatment box and extends to the outside of the nitrogen circulating treatment box, and one end, located at the outside of the nitrogen circulating treatment box, of the second pipeline is fixedly connected with one end of the exhaust pipe.
Preferably, a liquid level control switch is fixedly installed in the U-shaped pipe, an electromagnetic valve is fixedly installed at one end of the liquid discharge pipe, and the liquid level control switch is electrically connected with the electromagnetic valve.
Preferably, the liquid discharge pipe penetrates through the nitrogen circulation treatment box and the heat preservation cotton layer and extends to the outside of the nitrogen circulation treatment box.
Preferably, the exhaust pipe is located the outside one end fixed mounting of nitrogen gas circulation processing case and has the flange, flange one end fixedly connected with second intake pipe, also fixedly connected with flange of second intake pipe one end, filter fixed mounting is between two sets of flanges.
Preferably, one end of the second air inlet pipe, which is far away from the flange, is fixedly connected with one side of the bell type annealing furnace body.
Compared with the prior art, the beneficial effects of the utility model are that:
a group of nitrogen recovery devices is arranged, so that the power consumption for recovering the nitrogen with the purity of 99% in 1m is about 50% of that for producing the nitrogen, 50% of energy is saved, and the production cost is reduced; and the waste nitrogen gas to be emptied after purification is internally provided with dust with the diameter of about 13 mu m, has great influence on the environment, and can eliminate the pollution to the air by completely recycling the waste nitrogen gas.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of a nitrogen recycling device for a heat preservation period of a bell-type annealing furnace according to the present invention;
FIG. 2 is a schematic view of the nitrogen recycling device of the present invention during the heat preservation period of the bell-type annealing furnace;
FIG. 3 is a schematic view of the cross-sectional structure of a nitrogen recycling treatment tank of the nitrogen recycling device for use in the heat preservation period of the bell-type annealing furnace of the present invention;
FIG. 4 is an enlarged schematic structural view of the part A in FIG. 3 of the nitrogen gas recycling device for the heat preservation period of the bell jar type annealing furnace according to the present invention;
FIG. 5 is an enlarged schematic structural view of a portion B in FIG. 2 of the nitrogen gas recycling device for the heat preservation period of the bell jar type annealing furnace according to the present invention.
In the figure: 1. a bell jar type annealing furnace body; 2. a nitrogen circulating treatment box; 201. a base plate; 202. a support leg; 203. a heat insulation cotton layer; 3. a first intake pipe; 4. a cooling assembly; 401. a main pipeline; 402. a condenser tube; 403. a high pressure spray head; 5. an oxygen scavenging assembly; 501. a first conduit; 502. a second conduit; 503. a U-shaped pipe; 504. a liquid discharge pipe; 505. a liquid level control switch; 506. an electromagnetic valve; 507. a flange; 6. an impurity removal component; 601. an exhaust pipe; 602. a filter plate; 603. a second intake pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific situation of the specification.
Referring to fig. 1-5, the present invention provides a technical solution: a nitrogen recycling device utilizing the heat preservation period of a bell-type annealing furnace, which comprises a bell-type annealing furnace body 1 and a nitrogen recycling treatment box 2, the bottom of the nitrogen circulating treatment box 2 is fixedly provided with a bottom plate 201, four corners of the bottom plate 201 are fixedly provided with supporting legs 202, the inner walls of the nitrogen circulating treatment box 2 are provided with heat preservation cotton layers 203, a first air inlet pipe 3 is fixedly connected between the bell-type annealing furnace body 1 and the nitrogen circulating treatment box 2, one end of the first air inlet pipe 3 is fixedly connected with the top of the bell-type annealing furnace body 1, and the other end of the first air inlet pipe 3 is fixedly connected with one end of the first pipeline 501, the cooling component 4 is fixedly arranged at the top of the nitrogen circulating treatment box 2, the nitrogen gas circulation treatment box 2 is internally and fixedly provided with a deoxidizing component 5, and one side of the bell-type annealing furnace body 1 and one side of the nitrogen gas circulation treatment box 2 are fixedly connected with impurity removing components 6.
The oxygen removing component 5 comprises a first pipeline 501, a second pipeline 502 and a U-shaped pipe 503, the U-shaped pipe 503 is fixedly installed at one end of the bottom of the first pipeline 501 and the second pipeline 502, the first pipeline 501, the second pipeline 502 and the U-shaped pipe 503 are communicated, a liquid discharge pipe 504 is arranged at the bottom in the U-shaped pipe 503, one end, far away from the U-shaped pipe 503, of the second pipeline 502 penetrates through one side of the nitrogen circulation processing box 2 and extends to the outside of the nitrogen circulation processing box 2, one end, located outside the nitrogen circulation processing box 2, of the second pipeline 502 is fixedly connected with one end of an exhaust pipe 601, a liquid level control switch 505 is fixedly installed in the U-shaped pipe 503, an electromagnetic valve 506 is fixedly installed at one end of the liquid discharge pipe 504, the liquid level control switch 505 is electrically connected with the electromagnetic valve 506, the liquid discharge pipe 504 penetrates through the nitrogen circulation processing box 2 and the heat insulation, the liquid discharge pipe 504 penetrates through the nitrogen circulation treatment box 2 and the heat preservation cotton layer 203 and extends to the outside of the nitrogen circulation treatment box 2.
The impurity removing component 6 comprises two sets of exhaust pipes 601 and a filter plate 602, the filter plate 602 is fixedly arranged between the two sets of exhaust pipes 601, the exhaust pipes 601 are located at one end of the outside of the nitrogen circulating treatment box 2 and are fixedly provided with flanges 507, one end of each flange 507 is fixedly connected with a second air inlet pipe 603, one end of each second air inlet pipe 603 is also fixedly connected with the flange 507, the filter plate 602 is fixedly arranged between the two sets of flanges 507, and one end of each second air inlet pipe 603, which is far away from the flange 507, is fixedly connected with one side of the bell.
In this embodiment, the connection positions of the first air inlet pipe 3, the main pipe 401, the condensation pipe 402, the second air inlet pipe 603, the first pipeline 501, the second pipeline 502, the U-shaped pipe 503 and the liquid outlet pipe 504 are all communicated and arranged in a penetrating manner.
The working principle is as follows: a group of nitrogen recovery devices are arranged, when the nitrogen recovery device is used, waste nitrogen in a bell-type annealing furnace body 1 is introduced into a nitrogen circulation treatment box 2 through a first air inlet pipe 3, cold air generation equipment is started, cold air is sprayed into the nitrogen circulation treatment box 2 through a high-pressure spray nozzle 403 by utilizing a condensation pipe 402, the waste nitrogen is cooled, oxygen in the slow nitrogen is liquefied and stored in a U-shaped pipe 503, when a certain amount of nitrogen is reached, a liquid level control switch 505 is utilized to trigger an electromagnetic valve 506, liquid oxygen is discharged, then the purified nitrogen enters an exhaust pipe 601, impurities are removed through a filter plate 602 and returns to the nitrogen circulation treatment box 2 again, the electricity consumption for recovering the nitrogen with the purity of 99% of 1m frame size is about 50% of that for producing the nitrogen, 50% of energy is saved, and the production cost is reduced; and the waste nitrogen gas to be emptied after purification is internally provided with dust with the diameter of about 13 mu m, has great influence on the environment, and can eliminate the pollution to the air by completely recycling the waste nitrogen gas.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an utilize bell jar type annealing furnace heat preservation period nitrogen gas circulation use device, includes bell jar type annealing furnace body (1) and nitrogen gas circulation treatment case (2), its characterized in that: a first air inlet pipe (3) is fixedly connected between the bell-type annealing furnace body (1) and the nitrogen circulating treatment box (2), a cooling assembly (4) is fixedly installed at the top of the nitrogen circulating treatment box (2), a deoxidizing assembly (5) is fixedly installed in the nitrogen circulating treatment box (2), and impurity removing assemblies (6) are fixedly connected to one side of the bell-type annealing furnace body (1) and one side of the nitrogen circulating treatment box (2);
the cooling assembly (4) comprises a main pipeline (401) and a condensation pipe (402), six groups of condensation pipes (402) are arranged, one end of each condensation pipe (402) is communicated with the main pipeline (401), one end, far away from the main pipeline (401), of each condensation pipe (402) penetrates through and extends into the nitrogen circulation treatment box (2), and a high-pressure spray head (403) is fixedly installed at one end, located in the nitrogen circulation treatment box (2), of each condensation pipe (402);
the oxygen removing assembly (5) comprises a first pipeline (501), a second pipeline (502) and a U-shaped pipe (503), the U-shaped pipe (503) is fixedly installed at one end of the bottom of the first pipeline (501) and one end of the bottom of the second pipeline (502), the first pipeline (501), the second pipeline (502) and the U-shaped pipe (503) are communicated, and a liquid discharge pipe (504) is arranged at the bottom in the U-shaped pipe (503);
edulcoration subassembly (6) include two sets of blast pipes (601) and filter (602), filter (602) fixed mounting is in between two sets of blast pipes (601).
2. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to the claim 1, characterized in that: the nitrogen circulating treatment box (2) is fixedly provided with a bottom plate (201) at the bottom, and four corners of the bottom plate (201) are fixedly provided with supporting legs (202).
3. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to the claim 1, characterized in that: the inner wall of the nitrogen circulating treatment box (2) is provided with a heat preservation cotton layer (203).
4. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to the claim 1, characterized in that: one end of the first air inlet pipe (3) is fixedly connected to the top of the bell-type annealing furnace body (1), and the other end of the first air inlet pipe (3) is fixedly connected to one end of the first pipeline (501).
5. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to the claim 1, characterized in that: one end, far away from the U-shaped pipe (503), of the second pipeline (502) penetrates through one side of the nitrogen circulating treatment box (2) and extends to the outside of the nitrogen circulating treatment box (2), and one end, located outside the nitrogen circulating treatment box (2), of the second pipeline (502) is fixedly connected with one end of the exhaust pipe (601).
6. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to the claim 1, characterized in that: a liquid level control switch (505) is fixedly mounted in the U-shaped pipe (503), an electromagnetic valve (506) is fixedly mounted at one end of the liquid discharge pipe (504), and the liquid level control switch (505) is electrically connected with the electromagnetic valve (506).
7. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to the claim 1, characterized in that: the liquid discharge pipe (504) penetrates through the nitrogen circulating treatment box (2) and the heat preservation cotton layer (203) and extends to the outside of the nitrogen circulating treatment box (2).
8. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to the claim 1, characterized in that: exhaust pipe (601) are located the outside one end fixed mounting of nitrogen gas circulation treatment case (2) and have flange (507), flange (507) one end fixedly connected with second intake pipe (603), also fixedly connected with flange (507) of second intake pipe (603) one end, filter (602) fixed mounting is between two sets of flanges (507).
9. The nitrogen recycling device for the heat preservation period of the bell jar annealing furnace according to claim 8, characterized in that: one end of the second air inlet pipe (603) far away from the flange (507) is fixedly connected with one side of the bell-type annealing furnace body (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020592441.6U CN212293673U (en) | 2020-04-20 | 2020-04-20 | Nitrogen recycling device for use in heat preservation period of bell-type annealing furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020592441.6U CN212293673U (en) | 2020-04-20 | 2020-04-20 | Nitrogen recycling device for use in heat preservation period of bell-type annealing furnace |
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| CN212293673U true CN212293673U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424153A (en) * | 2020-04-20 | 2020-07-17 | 江西耐乐科技协同创新有限公司 | Nitrogen recycling device for use in heat preservation period of bell-type annealing furnace |
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2020
- 2020-04-20 CN CN202020592441.6U patent/CN212293673U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424153A (en) * | 2020-04-20 | 2020-07-17 | 江西耐乐科技协同创新有限公司 | Nitrogen recycling device for use in heat preservation period of bell-type annealing furnace |
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Effective date of registration: 20231212 Address after: 510000 No. 106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province Patentee after: Guangzhou dinghang Information Technology Service Co.,Ltd. Address before: 335200 Wuhu Development Zone, Yujiang County, Yingtan City, Jiangxi Province Patentee before: Jiangxi nale Technology Co.,Ltd. Patentee before: JIANGXI NAILE COPPER Co.,Ltd. |
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Effective date of registration: 20231224 Address after: 335200 Wuhu Development Zone, Yujiang District, Yingtan City, Jiangxi Province Patentee after: Jiangxi nale Technology Co.,Ltd. Patentee after: JIANGXI NAILE COPPER Co.,Ltd. Address before: 510000 No. 106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province Patentee before: Guangzhou dinghang Information Technology Service Co.,Ltd. |
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