CN110986596A - Higher and automatic transfer device for steelmaking of throwing material closely of security - Google Patents
Higher and automatic transfer device for steelmaking of throwing material closely of security Download PDFInfo
- Publication number
- CN110986596A CN110986596A CN201911320221.6A CN201911320221A CN110986596A CN 110986596 A CN110986596 A CN 110986596A CN 201911320221 A CN201911320221 A CN 201911320221A CN 110986596 A CN110986596 A CN 110986596A
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- Prior art keywords
- outer side
- gear
- fixedly connected
- rod
- transfer device
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- 238000009628 steelmaking Methods 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 title claims abstract description 23
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 229910000805 Pig iron Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0024—Charging; Discharging; Manipulation of charge of metallic workpieces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0046—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising one or more movable arms, e.g. forks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0065—Lifts, e.g. containing the bucket elevators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
- F27D2003/0072—Use of a pinion and a rack
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0085—Movement of the container or support of the charge in the furnace or in the charging facilities
- F27D2003/0086—Up or down
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0085—Movement of the container or support of the charge in the furnace or in the charging facilities
- F27D2003/0091—Horizontally
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to the technical field of steel making, and discloses a transfer device for steel making, which has higher safety and can automatically feed materials in a short distance, and the transfer device comprises a shell, wherein a fixed block is fixedly connected to the outer side of the shell; the rotating rod rotates to cause intermittent reciprocating rotation of the stud, meanwhile, the fixing block is movably clamped in an L-shaped channel of the support rod, the support rod moves downwards after rotating by one hundred eighty degrees along with the stud, the object containing box moves synchronously, the object containing box is close to the steel making furnace, the object containing box automatically moves to the position above the steel making furnace and is close to the steel making furnace, damage to the steel making furnace when discharging due to the fact that the position of the material is too high is avoided, the third gear moves downwards to be close to the second gear rod when the object containing box moves downwards by a worker who burns due to the temperature of the steel making furnace, the third gear is caused to rotate to enable the discharge port of the bottom plate far away from the object containing box to be vertically placed, the discharge port is automatically opened to enable the material to fall, linkage between structures is increased, and operation is more convenient.
Description
Technical Field
The invention relates to the technical field of steel making, in particular to a transfer device for steel making, which has higher safety and can automatically feed materials in a short distance.
Background
Steelmaking refers to smelting pig iron in a steelmaking furnace according to a certain process to obtain steel, wherein the steel is an indispensable component in the building industry, the manufacturing industry and the daily life of people,
in the process of smelting steel, pig iron needs to be added into a steel making furnace, at present, feeding is mainly carried out manually, and due to the fact that the temperature of the steel making furnace is very high, the steel making furnace is easy to burn at high temperature when feeding is carried out, certain threat is brought to safety of workers, working efficiency is low, a corresponding feeding device is also provided, for example, a packing auger rod is used for conveying feeding materials, the materials are conveyed to the high altitude in a feeding mode and then fall into the steel making furnace from the high altitude, the pig iron has a large impact degree on the steel making furnace, the steel making furnace is easy to damage, and the service life of the steel making furnace is shortened.
Aiming at the defects of the prior art, the invention provides the transfer device for steelmaking, which has higher safety and can automatically feed materials in a short distance, has the advantages of automatic short-distance feeding and safe operation, solves the problems of operational danger and easy damage to a steelmaking furnace, automatically moves the material loading box above the steelmaking furnace and close to the steelmaking furnace, shortens the distance between the material and the steelmaking furnace, reduces the impact force of the material on the steelmaking furnace, avoids the damage to the steelmaking furnace caused by overhigh position during discharging, liberates both hands, avoids the temperature of the steelmaking furnace from burning workers, ensures the safety of human body, automatically opens the discharge port to enable the material to fall down, increases the linkage between structures, and enables the operation to be more convenient.
Disclosure of Invention
Technical scheme (I)
In order to realize the purposes of automatic close-distance delivery and safe operation, the invention provides the following technical scheme: the transfer device for steelmaking, which has higher safety and can automatically feed materials in a close range, comprises a shell, a fixed block, a screw, a stud, a support rod, a material containing box, a first toothed bar, a first gear, a second gear, a rotating rod, a bottom plate, a bump, a roller, a third gear and a second toothed bar.
Wherein:
the position and connection relationship among the structures are as follows:
a transfer device for steelmaking with higher safety and automatic close-distance feeding comprises a shell, wherein a hollow groove is formed in the shell, the size of the hollow groove is matched with the size of a stud, a through hole is formed in the outer side of the hollow groove, the size of the through hole is matched with the size of the screw, a fixing block is fixedly connected to the outer side of the shell, a screw is movably connected to the inner portion of the shell, the size of the screw is matched with the size of the stud, a support rod is fixedly connected to the top of the stud, an L-shaped channel is formed in the surface of the support rod, the size of the L-shaped channel is matched with the size of the fixing block, a connecting rod is fixedly connected to the top of the support rod, an object accommodating box is fixedly connected to the bottom of the connecting rod, an object accommodating box is fixedly connected to the outer side of the support rod, a first toothed bar is fixedly connected to the outer side of the screw, the size of the, the outer side of the first gear is movably connected with a second gear.
The two second gears are same in size, the left second gear is fixedly connected to the outer side of the first gear, the outer side of the left second gear is fixedly connected with a first connecting rod, the outer side of the right second gear is fixedly connected with a second connecting rod, the outer side of the second gear is movably connected with a rotating rod, the outer side of the rotating rod is fixedly connected with a stop block, the bottom of the object containing box is movably connected with a bottom plate, the outer side of the bottom plate is fixedly connected with a convex block, the side surface of the convex block is in an isosceles trapezoid shape, the convex block is fixedly connected below the object containing box, the roller is attached to the outer side of the inclined plane of the convex block, the outer side of the convex block is movably connected with a roller, the outer side of the roller is fixedly connected with a connecting rod, the outer side of the connecting rod is fixedly connected with a bottom plate, the outer side of the connecting rod is fixedly connected with a third gear, the outer, the second rack bar is fixedly connected to the outer side of the shell.
(II) advantageous effects
Compared with the prior art, the transfer device for steelmaking provided by the invention has higher safety and can automatically feed materials in a short distance, and has the following beneficial effects:
1. through the combined action of the rotating rod, the first toothed bar, the screw rod, the stud, the fixed block, the supporting rod and the object containing box, the rotating rod rotates to cause the intermittent reciprocating movement of the first toothed bar, the screw rod synchronously moves to drive the stud to intermittently reciprocate and rotate, meanwhile, the fixed block is movably clamped in an L-shaped channel of the supporting rod, the supporting rod is made to move downwards after rotating by one hundred eighty degrees along with the stud, the object containing box synchronously moves, the object containing box is made to be close to the steel making furnace, the object containing box is automatically moved to the position above the steel making furnace and close to the steel making furnace, the distance between the material and the steel making furnace is shortened, the impact strength of the material on the steel making furnace is reduced, the damage to the steel making furnace when the material is discharged due to the overhigh position is avoided, two hands are liberated, so that the temperature of the steel making furnace burns workers.
2. Under the combined action of the object containing box, the third gear, the second toothed bar and the bottom plate, the object containing box moves downwards and simultaneously the third gear moves downwards to be close to the second toothed bar, so that the third gear rotates to enable the bottom plate to be kept away from the object containing box, and the object containing box is vertically placed, and therefore the material can fall down by automatically opening the discharge port, linkage between structures is increased, and operation is more convenient.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 of the present invention, with the various structures in an initial state, without a change in position;
FIG. 3 is a cross-sectional view of the motion trajectory of the present invention as shown in FIG. 1, where the screw is moved away from the housing causing the container to rotate one hundred eighty degrees and move downward;
FIG. 4 is a schematic view of the connection and rotation system of the first rack and the rotating rod of the present invention, wherein each structure is in an initial state and does not change its position;
FIG. 5 is a schematic diagram of the movement traces of the first rack and the rotary rod of the present invention, wherein the rotary rod rotates to cause the first rack to intermittently reciprocate;
FIG. 6 is a schematic view of the connection between the base plate and the third gear according to the present invention;
FIG. 7 is a side view of the connection between the base plate and the third gear of the present invention, wherein the structures are in their initial state and are not changed in position;
FIG. 8 is a schematic view of the movement of the bottom plate and the third gear of the present invention, wherein the third gear rotates to cause the bottom plate to move away from the bottom of the container;
FIG. 9 is a schematic view of the connection between the third gear and the second gear rod according to the present invention.
In the figure: 1-shell, 2-fixed block, 3-screw, 4-stud, 5-support rod, 6-storage box, 7-first toothed bar, 8-first gear, 9-second gear, 10-rotating rod, 11-bottom plate, 12-lug, 13-roller, 14-third gear and 15-second toothed bar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, a transfer device for steelmaking with higher safety and automatic close-distance feeding comprises a housing 1, wherein a hollow groove is formed inside the housing 1, the size of the hollow groove is matched with that of a stud 4, the stud 4 can move up and down smoothly, a through hole is formed outside the hollow groove, the size of the through hole is matched with that of a screw 3, the screw 3 can smoothly enter and exit the housing 1, a fixed block 2 is fixedly connected to the outside of the housing 1, the screw 3 is movably connected inside the housing 1, the size of the screw 3 is matched with that of the stud 4, the stud 4 is movably connected to the outside of the screw 3, a support rod 5 is fixedly connected to the top of the stud 4, an L-shaped channel is formed on the surface of the support rod 5, the size of the L-shaped channel is matched with that of the fixed block 2, initially, the fixed block 2 is movably clamped in a transverse groove of the L-, the perpendicular groove of "L" form channel is close to fixed block 2, cause branch 5 to move down, the top fixedly connected with connecting rod of branch 5, the bottom fixedly connected with dress thing case 6 of connecting rod, the outside fixedly connected with dress thing case 6 of branch 5, the first ratch 7 of outside fixedly connected with of screw rod 3, the size of first ratch 7 and first gear 8's size looks adaptation, the bottom swing joint of first ratch 7 has first gear 8, the outside swing joint of first gear 8 has second gear 9, second gear 9 has two and the size is the same, left side second gear 9 fixed connection is in the outside of first gear 8, the first connecting rod of the outside fixedly connected with of left side second gear 9, the outside fixedly connected with second connecting rod of right side second gear 9.
The outer side of the second gear 9 is movably connected with a rotating rod 10, the outer side of the rotating rod 10 is fixedly connected with a stop block, the stop block has the function of pushing the first connecting rod and the second connecting rod to rotate, the bottom of the object containing box 6 is movably connected with a bottom plate 11, the outer side of the bottom plate 11 is fixedly connected with a convex block 12, the side surface of the convex block 12 is in an isosceles trapezoid shape, the convex block 12 is fixedly connected below the object containing box 6, a roller 13 is attached to the outer side of the inclined surface of the convex block 12, the outer side of the convex block 12 is movably connected with a roller 13, the outer side of the roller 13 is fixedly connected with a connecting rod, the outer side of the connecting rod is fixedly connected with a bottom plate 11, when the roller 13 moves from the leftmost side to the rightmost side of the inclined surface of the convex block 12, the bottom of the bottom plate 11 far away from the object containing box 6 can be driven to be vertically placed, the, the third gear 14 is rotated by moving the third gear 14 downward to be close to and engaged with the second rack 15, the second rack 15 is fixedly connected to the outer side of the third gear 14, and the second rack 15 is fixedly connected to the outer side of the housing 1.
The working process and the principle of the device are as follows:
when the rotating rod 10 rotates, the stop block of the rotating rod is close to the first connecting rod of the left second gear 9, the first connecting rod is pushed to cause the left second gear 9 to rotate clockwise, the first gear 8 on the outer side of the rotating rod rotates synchronously, the first gear 8 is meshed with the first toothed rod 7 to drive the first toothed rod 7 to move right, then the rotating rod 10 is far away from the first connecting rod and close to the second connecting rod of the right second gear 9 to cause the first toothed rod 7 to stop moving right, then the rotating rod 10 pushes the second connecting rod to drive the right second gear 9 to rotate clockwise, the right second gear 9 is meshed with the left second gear 9 to drive the left second gear 9 to rotate anticlockwise, the first gear 8 moves synchronously and drives the first toothed rod 7 to move left to cause the first toothed rod 7 to reciprocate intermittently, the first toothed rod 7 drives the screw 3 to move synchronously to enter and exit the shell 1, the screw 3 is meshed with the stud 4 first to drive the stud 4 to reciprocate intermittently, initially, the fixed block 2 is movably clamped in a transverse groove of an L-shaped channel of the support rod 5, then the stud 4 rotates, the support rod 5 synchronously rotates to enable a vertical groove of the L-shaped channel to be close to the fixed block 2, the support rod 5 rotates one hundred eighty degrees and then moves downwards, the material containing box 6 synchronously moves, and at the moment, the material containing box 6 moves to the upper part of the steel making furnace and is close to a feeding hole.
The above structure and process are shown in FIGS. 1-5.
Meanwhile, the object containing box 6 moves downwards to drive the third gear 14 to move downwards to be close to the second rack 15 and meshed with the second rack, so that the third gear 14 rotates, the third gear 14 drives the connecting rod to rotate, the roller 13 rotates and rolls outside the convex block 12, the roller 13 is initially positioned on the leftmost side of the inclined plane of the convex block 12, the bottom plate 11 is positioned under the object containing box 6 at the moment and shields a discharge hole of the object containing box 6, the roller 13 rotates to the rightmost side of the inclined plane of the convex block 12 due to the rotation of the third gear 14, the bottom plate 11 overturns along with the rotation, the discharge hole of the bottom plate 11 far away from the object containing box 6 is vertically placed, and the discharge hole of the object containing box 6 is automatically opened to discharge.
The above structure and process are shown in FIGS. 6-9.
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 (7)
1. The utility model provides a higher and automatic transfer device for steelmaking that closely throws material of security, includes shell (1), its characterized in that: the outer side of the shell (1) is fixedly connected with a fixed block (2), the inner part of the shell (1) is movably connected with a screw (3), the outer side of the screw (3) is movably connected with a stud (4), the top of the stud (4) is fixedly connected with a support rod (5), the outer side of the support rod (5) is fixedly connected with an object containing box (6), the outer side of the screw (3) is fixedly connected with a first toothed rod (7), the bottom of the first toothed rod (7) is movably connected with a first gear (8), the outer side of the first gear (8) is movably connected with a second gear (9), the outer side of the second gear (9) is movably connected with a rotating rod (10), the bottom of the object containing box (6) is movably connected with a bottom plate (11), the outer side of the bottom plate (11) is fixedly connected with a convex block (12), the outer side of the convex block (12) is movably connected with a, a second rack (15) is fixedly connected to the outer side of the third gear (14).
2. The transfer device for steelmaking with higher safety and automatic close-distance charging according to claim 1, characterized in that: the inner part of the shell (1) is provided with a hollow groove, the size of the hollow groove is matched with that of the stud (4), the outer side of the hollow groove is provided with a through hole, the size of the through hole is matched with that of the screw rod (3), and the size of the screw rod (3) is matched with that of the stud (4).
3. The transfer device for steelmaking with higher safety and automatic close-distance charging according to claim 1, characterized in that: the surface of branch (5) has seted up "L" form channel, and its size and the size looks adaptation of fixed block (2), the top fixedly connected with connecting rod of branch (5), the bottom fixedly connected with dress thing case (6) of connecting rod.
4. The transfer device for steelmaking with higher safety and automatic close-distance charging according to claim 1, characterized in that: the size of the first rack (7) is matched with that of the first gear (8).
5. The transfer device for steelmaking with higher safety and automatic close-distance charging according to claim 1, characterized in that: the side surface of the convex block (12) is in an isosceles trapezoid shape, the convex block (12) is fixedly connected below the object containing box (6), and the roller (13) is attached to the outer side of the inclined surface of the convex block (12).
6. The transfer device for steelmaking with higher safety and automatic close-distance charging according to claim 1, characterized in that: the outer side of the roller (13) is fixedly connected with a connecting rod, the outer side of the connecting rod is fixedly connected with a bottom plate (11), the outer side of the connecting rod is fixedly connected with a third gear (14), the size of the third gear (14) is matched with that of a second toothed bar (15), and the second toothed bar (15) is fixedly connected to the outer side of the shell (1).
7. The transfer device for steelmaking with higher safety and automatic close-distance charging according to claim 1, characterized in that: the two second gears (9) are same in size, the left second gear (9) is fixedly connected to the outer side of the first gear (8), the outer side of the left second gear (9) is fixedly connected with a first connecting rod, the outer side of the right second gear (9) is fixedly connected with a second connecting rod, and the outer side of the rotating rod (10) is fixedly connected with a stop block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320221.6A CN110986596B (en) | 2019-12-19 | 2019-12-19 | Higher and automatic transfer device for steelmaking of throwing material closely of security |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320221.6A CN110986596B (en) | 2019-12-19 | 2019-12-19 | Higher and automatic transfer device for steelmaking of throwing material closely of security |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110986596A true CN110986596A (en) | 2020-04-10 |
| CN110986596B CN110986596B (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911320221.6A Active CN110986596B (en) | 2019-12-19 | 2019-12-19 | Higher and automatic transfer device for steelmaking of throwing material closely of security |
Country Status (1)
| Country | Link |
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| CN (1) | CN110986596B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168303A (en) * | 2017-12-18 | 2018-06-15 | 巢湖云海镁业有限公司 | A kind of smelting furnace feeding device |
| CN109059554A (en) * | 2018-09-04 | 2018-12-21 | 明光瑞尔非金属材料有限公司 | A kind of feeding device of refractory brick calcining |
| CN109307433A (en) * | 2018-09-30 | 2019-02-05 | 禹州市毛吕铸造有限公司 | A kind of feeding device for Metal Melting |
| CN109696059A (en) * | 2018-11-30 | 2019-04-30 | 佛山丰汇环保工程有限公司 | A kind of device recycling high-temp solid material waste heat |
-
2019
- 2019-12-19 CN CN201911320221.6A patent/CN110986596B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168303A (en) * | 2017-12-18 | 2018-06-15 | 巢湖云海镁业有限公司 | A kind of smelting furnace feeding device |
| CN109059554A (en) * | 2018-09-04 | 2018-12-21 | 明光瑞尔非金属材料有限公司 | A kind of feeding device of refractory brick calcining |
| CN109307433A (en) * | 2018-09-30 | 2019-02-05 | 禹州市毛吕铸造有限公司 | A kind of feeding device for Metal Melting |
| CN109696059A (en) * | 2018-11-30 | 2019-04-30 | 佛山丰汇环保工程有限公司 | A kind of device recycling high-temp solid material waste heat |
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| CN110986596B (en) | 2021-09-10 |
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Effective date of registration: 20210827 Address after: 323000 No. 66, Nanwang Road, Wangcun Town, Huzhen Town, Jinyun County, Lishui City, Zhejiang Province Applicant after: Zhejiang Yuxin Industrial Co.,Ltd. Address before: 337000 Anyuan area, Anyuan Industrial Park, Anyuan District, Pingxiang City, Jiangxi Province Applicant before: Chen Wei |
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