CN107557529B - A kind of U-shaped scrap heating system - Google Patents
A kind of U-shaped scrap heating system Download PDFInfo
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- CN107557529B CN107557529B CN201710860162.6A CN201710860162A CN107557529B CN 107557529 B CN107557529 B CN 107557529B CN 201710860162 A CN201710860162 A CN 201710860162A CN 107557529 B CN107557529 B CN 107557529B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 95
- 238000007664 blowing Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 239000003034 coal gas Substances 0.000 claims description 45
- 239000012530 fluid Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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 present invention relates to a kind of U-shaped scrap heating systems, including U-shaped heating furnace, and the bell of the U-shaped heating furnace top surface and furnace body two sides are equipped with burner, for preheating to steel scrap in furnace；U-shaped furnace side is provided with the second rack, and pulley and wirerope mechanism are equipped with by the second rack, for by bell opening overhead traveling crane toward U-shaped furnace charge；U-shaped furnace is connect with the first rack pivot, and bottom of furnace body is connected with 2 hydraulic cylinders below caudal part, which is fixed on ground；U-shaped burner end is equipped with fire door, is used for blowing；Track is provided with below furnace body on ground, blowing trolley slides into from U-shaped stokehold side along the track and carries out blowing below fire door.The present invention uses the U-shaped heating furnace of 1 included burner, and charging, baking and blowing operation to steel scrap can be completed.Be sealing baking when baking, can reduce thermal loss, improve fuel availability, be particularly suitable for place it is little when to the preheating situation of steel scrap.
Description
Technical field
The invention belongs to heating device technology area, is preheated online more particularly, to a kind of steel scrap for electric furnace steel making and be
System, specifically a kind of U-shaped scrap heating system.
Background technique
In using intermediate frequency furnace as the production of the steel of smelting furnace, in order to energy-saving, it usually needs preheated to steel scrap, mesh
Preceding scrap steel preheating is usually offline design, it may be assumed that scrap steel preheating is subsequently poured into storage tank to 800 DEG C or so in a place
In, then next group steel scrap is preheated, storage tank is transported to electric furnace position, pours into electric furnace and carries out melting, this mode typically at least needs
3 trolleies are wanted, are charging trolley respectively, toast trolley and blowing trolley, three trolley cycle operation operations.On the one hand this shape
The scrap steel preheating inefficiency of formula, brings inconvenience to production；On the other hand, corresponding personnel's real-time operation is needed, is increased
Cost investment, and trolley longtime running, increase its failure rate, and later period maintenance and maintenance cost are relatively high, and are turning
Amount of heat can be lost during fortune, cause the waste of mass energy.
Summary of the invention
A kind of U-shaped scrap heating system is provided the invention aims to overcome the deficiencies in the prior art, using included
The U-shaped heating furnace of burner, only with a heating furnace, whole system is fixed, only needs blowing trolley mobile, can be completed pair
Charging, baking and the blowing operation of steel scrap.It is very easy to use, it is sealing baking when baking, thermal loss can be reduced, mentioned
High fuel availability realizes depth energy saving consumption reduction, be particularly suitable for place it is little when to the preheating situation of steel scrap.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.It proposes according to the present invention
A kind of U-shaped scrap heating system, including U-shaped heating furnace 1, on bell 2 of the U-shaped heating furnace top surface and the U-shaped heating furnace
Two sides be equipped at least one burner 3；The side of U-shaped heating furnace is provided with the second rack 10, sets beside the second rack 10
There are pulley and wirerope mechanism 12, bell 2 can be opened by the pulley and wirerope mechanism, then uses overhead traveling crane toward U-shaped heating
Furnace charge；
The U-shaped heating furnace top surface and the burner 3 of two sides are pre- for toast to the steel scrap in U-shaped heating furnace
Heat；
Two sides of the U-shaped heating furnace pass through bearing block 4 and the first rack 5 is pivotally connected, U-shaped heating furnace bottom
2 hydraulic cylinders 6 are connected with below caudal part, the other end of 2 hydraulic cylinders is fixed on ground；With U-shaped heating furnace tail end
Corresponding head end is provided with fire door 7, which passes through 11 open or close of fluid power push rod；It is set on ground below U-shaped heating furnace
It is equipped with track 8, blowing trolley 9 slides into front of U-shaped heating furnace along the track 8 and carries out blowing below fire door；
Charging, baking, the blowing operation of U-shaped scrap heating furnace are completed by above procedure.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
U-shaped scrap heating system above-mentioned, wherein two sides of the U-shaped heating furnace are equipped with the first air and are in charge of
The burner of 1-1, the first gas manifold 1-2, the first air circuit 1-3, the first coal gas circuit 1-4, two sides are empty by first
Gas is in charge of 1-1 and the first gas manifold 1-2 and is connected to respectively with the first air circuit 1-3 and the first coal gas circuit 1-4；
The tail end of U-shaped heating furnace 1 is provided with the first air header 1-5 and the first gas main 1-6, first air header
1-5 and the first gas main 1-6 is connected to the first air circuit 1-3 and the first coal gas circuit 1-4 respectively.
U-shaped scrap heating system above-mentioned, wherein air successively passes through the first air header 1-5, the first air circuit 1-
3 are in charge of 1-1 into the first air, and coal gas successively passes through the first gas main 1-6, the first coal gas circuit 1-4 into the first coal gas
It is in charge of 1-2, coal gas and air burn in burner after entering respective subtube, carry out to the steel scrap in U-shaped heating furnace
Baking preheating；That is: the first air header 1-5 and the first gas main 1-6 provides total gas for the burner of U-shaped heating furnace two sides
Source.
U-shaped scrap heating system above-mentioned, wherein bell 2 is equipped with the second air and is in charge of 2-1, the second gas manifold 2-
2, the second air circuit 2-3, the second coal gas circuit 2-4, the burner on bell are in charge of 2-1 and the second coal gas by the second air
It is in charge of 2-2 to be connected to the second air circuit 2-3 and the second coal gas circuit 2-4 respectively；
The two sides of second rack 10 are respectively equipped with the second air header 2-5 and the second gas main 2-6, the second rack
Top surface is equipped with 2 bearing blocks, for being respectively fixed to the second air header 2-5 and the second gas main 2-6 that reach rack top surface,
The second air header 2-5 and the second gas main 2-6 is connected to the second air circuit 2-3 and the second coal gas circuit 2-4 respectively.
U-shaped scrap heating system above-mentioned, wherein air successively passes through the second air header 2-5, the second air circuit 2-
3 are in charge of 2-1 into the second air, and coal gas successively passes through the second gas main 2-6, the second coal gas circuit 2-4 into the second coal gas
It is in charge of 2-2, coal gas and air burn in burner after entering respective subtube, carry out to the steel scrap in U-shaped heating furnace
Baking preheating；That is: the second air header 2-5 and the second gas main 2-6 provides total gas for the burner of U-shaped heating furnace top surface
Source.
U-shaped scrap heating system above-mentioned, wherein the first air header 1-5, the first gas main 1-6, the second sky
Gas general pipeline 2-5, the second gas main 2-6 are connected with external air source, the first gas main 1-6 and the second gas main 2-
6 are connected by being flexible coupling with coal gas external air source, are moved easily；Described is flexible coupling using metal hose.
U-shaped scrap heating system above-mentioned, wherein when blowing, hydraulic cylinder 6 jacks up U-shaped heating furnace tail portion, U-shaped heating
Furnace head is fallen, and fire door 7 is opened by fluid power push rod 11, carries out blowing；Material is discharged, fluid power push rod 11 closes fire door 7, hydraulic
Cylinder is withdrawn, and U-shaped heating furnace tail portion is fallen, its head and tail portion is made to be in equilibrium state, meanwhile, blowing trolley 9 will be pre- through loop wheel machine
Steel scrap after heat is drawn to the processing of next program.
U-shaped scrap heating system above-mentioned, wherein the burner number on bell is 8, the combustion of U-shaped heating furnace side
Burner number is every side 8.
By above-mentioned technical proposal, advantages of the present invention and effect are:
The present invention only uses a U-shaped heating furnace, which carries baking system, and whole system is fixed, only needs
Blowing trolley is mobile, and charging, baking and blowing operation to steel scrap can be completed.It is very easy to use, the U-shaped heating furnace
Can length and burner determines according to actual conditions quantity.It is sealing baking when baking, thermal loss can be reduced, improve fuel
Utilization rate realizes depth energy saving consumption reduction.Present invention is particularly suitable for places when little to the preheating situation of steel scrap.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above-mentioned advantage and other purposes, feature and advantage of the invention
It can be more clearly understood, special below to lift preferred embodiment, detailed description are as follows.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is top view of the invention；
Fig. 4 is present invention charging status diagram；
Fig. 5 is blowing status diagram of the present invention, and for clear expression, which omits the second rack and pulley and wirerope machine
Structure.
[component symbol explanation]
1:U type heating furnace 2: bell 3: burner 4: bearing block
5: the first racks 6: hydraulic cylinder 7: fire door 8: track
9: 10: the second rack 11 of blowing trolley: fluid power push rod
12: pulley and wirerope mechanism
1-1: the first air is in charge of 1-2: the first gas manifold the 1-3: the first air circuit
1-4: the first coal gas circuit the 1-6: the first gas main of the 1-5: the first air header
2-1: the second air is in charge of 2-2: the second gas manifold the 2-3: the second air circuit
2-4: the second coal gas circuit the 2-6: the second gas main of the 2-5: the second air header
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to a kind of U-shaped scrap heating system proposed according to the present invention, specific embodiment, structure, spy
Sign and its effect, detailed description is as follows.
The present invention is a kind of U-shaped scrap heating system, including U-shaped heating furnace 1, on the bell 2 of U-shaped heating furnace top surface and
The two sides of the U-shaped heating furnace are respectively provided at least one burner 3, and U-shaped heating furnace two sides are equipped with the first air and are in charge of 1-
1, the burner of the first gas manifold 1-2, the first air circuit 1-3, the first coal gas circuit 1-4, two sides pass through the first air
It is in charge of 1-1 and the first gas manifold 1-2 to be connected to the first air circuit 1-3 and the first coal gas circuit 1-4 respectively；It is set on bell 2
There is the second air to be in charge of 2-1, the second gas manifold 2-2, the second air circuit 2-3, the second coal gas circuit 2-4, the combustion on bell
Burner by the second air be in charge of 2-1 and the second gas manifold 2-2 respectively with the second air circuit 2-3 and the second coal gas circuit 2-
4 connections.
The two sides of the U-shaped heating furnace pass through bearing block 4 and the first rack 5 is pivotally connected, and U-shaped heating furnace bottom is close to tail
2 hydraulic cylinders 6 are connected with below end, the other end of 2 hydraulic cylinders is fixed on ground.Head end corresponding with tail end is provided with
Fire door 7.Track 8 is provided with below U-shaped heating furnace, blowing trolley 9 slides into head in front of U-shaped heating furnace head end along the track 8
End lower section carries out blowing, and when blowing, hydraulic cylinder 6 jacks up U-shaped heating furnace tail portion, and under U-shaped heating burner clan, fire door 7 passes through
Fluid power push rod 11 is opened, and carries out blowing, as shown in Figure 5；Material is discharged, fluid power push rod 11 closes fire door 7, and hydraulic cylinder is withdrawn, U-shaped
Heating furnace tail portion is fallen, its head and tail portion is made to be in equilibrium state.
The tail end of U-shaped heating furnace 1 is additionally provided with the first air header 1-5 and the first gas main 1-6, and first air is total
Pipe 1-5 and the first gas main 1-6 is connected to the first air circuit 1-3 and the first coal gas circuit 1-4 respectively.That is: the first air
General pipeline 1-5 and the first gas main 1-6 provides total gas source for the burner of U-shaped heating furnace two sides.
The side of U-shaped heating furnace is provided with the second rack 10, and the two sides of second rack are respectively equipped with the second air header
2-5 and the second gas main 2-6,10 top surface of the second rack are equipped with 2 bearing blocks, reach the of rack top surface for being respectively fixed to
Two air header 2-5 and the second gas main 2-6, the second air header 2-5 and the second gas main 2-6 respectively with the second air
Circuit 2-3 and the second coal gas circuit 2-4 connection.Air successively passes through the second air header 2-5, the second air circuit 2-3 entrance
Second air is in charge of 2-1, and coal gas successively passes through the second gas main 2-6, the second coal gas circuit 2-4 into the second gas manifold 2-
2, coal gas and air enter respective subtube and burn in burner later, toast to the steel scrap in U-shaped heating furnace pre-
Heat.That is: the second air header 2-5 and the second gas main 2-6 provides total gas source for the burner of U-shaped heating furnace top surface.
Further, the first air header 1-5, the first gas main 1-6, the second air header 2-5, the second coal gas are total
Pipe 2-6 is connected with external air source, the first gas main 1-6 and the second gas main 2-6 by be flexible coupling with outside coal gas
Portion's gas source is connected, and is moved easily.Described being flexible coupling can be using metal hose.
Further, it is additionally provided with pulley and wirerope mechanism 12 beside second rack 10, passes through the pulley and wirerope
Mechanism can open bell 2, then with overhead traveling crane toward U-shaped heating furnace charge, as shown in Figure 4.
The above described is only a preferred embodiment of the present invention, limitation in any form not is done to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention
Any simple modification, equivalent change and modification made to the above embodiment, all of which are still within the scope of the technical scheme of the invention.
Claims (9)
1. a kind of U-shaped scrap heating system, it is characterised in that including U-shaped heating furnace (1), the bell (2) of the U-shaped heating furnace top surface
Upper and the U-shaped heating furnace two sides are equipped at least one burner (3)；The side of U-shaped heating furnace is provided with the second rack
(10), pulley and wirerope mechanism (12) are equipped with beside the second rack (10), it can be by bell by the pulley and wirerope mechanism
(2) it opens, then uses overhead traveling crane toward U-shaped heating furnace charge；
The U-shaped heating furnace top surface and the burner (3) of two sides are pre- for toast to the steel scrap in U-shaped heating furnace
Heat；
Two sides of the U-shaped heating furnace pass through bearing block (4) and the first rack (5) and are pivotally connected, U-shaped heating furnace bottom
2 hydraulic cylinders (6) are connected with below caudal part, the other end of 2 hydraulic cylinders is fixed on ground；With U-shaped heating furnace tail
Corresponding head end is held to be provided with fire door (7), which passes through fluid power push rod (11) open or close；Below U-shaped heating furnace
It is provided on ground track (8), blowing trolley (9) slides into below fire door in front of U-shaped heating furnace along the track (8) and put
Material；
Charging, baking, the blowing operation of U-shaped scrap heating furnace are completed by above procedure.
2. U-shaped scrap heating system as described in claim 1, it is characterised in that two sides of the U-shaped heating furnace are all provided with
There is the first air to be in charge of (1-1), the first gas manifold (1-2), the first air circuit (1-3), the first coal gas circuit (1-4), two
The burner of side by the first air be in charge of (1-1) and the first gas manifold (1-2) respectively with the first air circuit (1-3) and
The connection of first coal gas circuit (1-4)；
The tail end of U-shaped heating furnace (1) is provided with the first air header (1-5) and the first gas main (1-6), and first air is total
Pipe (1-5) and the first gas main (1-6) are connected to the first air circuit (1-3) and the first coal gas circuit (1-4) respectively.
3. U-shaped scrap heating system as claimed in claim 2, it is characterised in that air successively passes through the first air header (1-
5), the first air circuit (1-3) enters the first air and is in charge of (1-1), and coal gas successively passes through the first gas main (1-6), first
Coal gas circuit (1-4) enters the first gas manifold (1-2), and coal gas and air enter after respective subtube in burner internal combustion
It burns, baking preheating is carried out to the steel scrap in U-shaped heating furnace；That is: the first air header (1-5) and the first gas main (1-6) are U
The burner of type heating furnace two sides provides total gas source.
4. U-shaped scrap heating system as described in claim 1, it is characterised in that bell (2) is equipped with the second air and is in charge of (2-
1), the second gas manifold (2-2), the second air circuit (2-3), the second coal gas circuit (2-4), burner on bell pass through the
Two air be in charge of (2-1) and the second gas manifold (2-2) respectively with the second air circuit (2-3) and the second coal gas circuit (2-4)
Connection；
The two sides of second rack (10) are respectively equipped with the second air header (2-5) and the second gas main (2-6), the second machine
Top of support is equipped with 2 bearing blocks, for being respectively fixed to the second air header (2-5) and the second gas main that reach rack top surface
(2-6), second air header (2-5) and the second gas main (2-6) respectively with the second air circuit (2-3) and the second coal gas
Circuit (2-4) connection.
5. U-shaped scrap heating system as claimed in claim 4, it is characterised in that air successively passes through the second air header (2-
5), the second air circuit (2-3) enters the second air and is in charge of (2-1), and coal gas successively passes through the second gas main (2-6), second
Coal gas circuit (2-4) enters the second gas manifold (2-2), and coal gas and air enter after respective subtube in burner internal combustion
It burns, baking preheating is carried out to the steel scrap in U-shaped heating furnace；That is: the second air header 2-5 and the second gas main 2-6 is U-shaped adds
The burner of hot stove top surface provides total gas source.
6. U-shaped scrap heating system as claimed in claim 2, it is characterised in that first air header (1-5), the first coal
Gas general pipeline (1-6) is connected with external air source, and first gas main (1-6) is connect by being flexible coupling with coal gas external air source
It is logical；Described is flexible coupling using metal hose.
7. U-shaped scrap heating system as claimed in claim 4, it is characterised in that second air header (2-5), the second coal
Gas general pipeline (2-6) is connected with external air source, and second gas main (2-6) is connect by being flexible coupling with coal gas external air source
It is logical；Described is flexible coupling using metal hose.
8. U-shaped scrap heating system as described in claim 1, it is characterised in that when blowing, hydraulic cylinder (6) is by U-shaped heating furnace
Tail portion jacks up, and under U-shaped heating burner clan, fire door (7) is opened by fluid power push rod (11), carries out blowing；Material is discharged, fluid power pushes away
Bar (11) closes fire door (7), and hydraulic cylinder is withdrawn, and U-shaped heating furnace tail portion is fallen, its head and tail portion is made to be in equilibrium state,
Meanwhile blowing trolley (9) draws the steel scrap after preheating to the processing of next program through loop wheel machine.
9. U-shaped scrap heating system as described in claim 1, it is characterised in that the burner number on bell is 8, U-shaped
The burner number of heating furnace side is every side 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860162.6A CN107557529B (en) | 2017-09-21 | 2017-09-21 | A kind of U-shaped scrap heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860162.6A CN107557529B (en) | 2017-09-21 | 2017-09-21 | A kind of U-shaped scrap heating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107557529A CN107557529A (en) | 2018-01-09 |
| CN107557529B true CN107557529B (en) | 2019-03-29 |
Family
ID=60981631
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710860162.6A Active CN107557529B (en) | 2017-09-21 | 2017-09-21 | A kind of U-shaped scrap heating system |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548426B (en) * | 2018-07-12 | 2023-11-10 | 张会强 | Scrap steel heating furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033529A (en) * | 1987-12-17 | 1989-06-28 | 沃斯特-阿尔派因多纳维茨钢铁股份有限公司 | The method of continuous smelting iron and steel scrap and equipment thereof |
| RU2401404C2 (en) * | 2008-06-16 | 2010-10-10 | Александр Петрович Лежнев | Steel furnace electric-arc flue gas scrap heater |
| CN103822489A (en) * | 2014-03-21 | 2014-05-28 | 张昌剑 | Waste-steel continuous preheating method and waste-steel continuous preheating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233285A (en) * | 1985-08-06 | 1987-02-13 | 山口共英工業株式会社 | Scrap preheater |
-
2017
- 2017-09-21 CN CN201710860162.6A patent/CN107557529B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033529A (en) * | 1987-12-17 | 1989-06-28 | 沃斯特-阿尔派因多纳维茨钢铁股份有限公司 | The method of continuous smelting iron and steel scrap and equipment thereof |
| RU2401404C2 (en) * | 2008-06-16 | 2010-10-10 | Александр Петрович Лежнев | Steel furnace electric-arc flue gas scrap heater |
| CN103822489A (en) * | 2014-03-21 | 2014-05-28 | 张昌剑 | Waste-steel continuous preheating method and waste-steel continuous preheating device |
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|---|---|
| CN107557529A (en) | 2018-01-09 |
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Address after: 471399 No.1 Gaoxin Road, Hebin Street Office, Yichuan County, Luoyang City, Henan Province Patentee after: Luoyang Woyouda Technology Co.,Ltd. Country or region after: China Address before: No. 8 Qingcheng Road, High-tech Development Zone, Luoyang City, Henan Province, 471000 Patentee before: LUOYANG WODA ENERGY SAVING TECHNOLOGY CO.,LTD. Country or region before: China |