CN217650826U - LF refining furnace electrode elevating gear - Google Patents
LF refining furnace electrode elevating gear Download PDFInfo
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- CN217650826U CN217650826U CN202221383434.0U CN202221383434U CN217650826U CN 217650826 U CN217650826 U CN 217650826U CN 202221383434 U CN202221383434 U CN 202221383434U CN 217650826 U CN217650826 U CN 217650826U
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model belongs to the technical field of the iron and steel is smelted, especially, relate to a LF refining furnace electrode elevating gear. The electrode of the LF refining furnace can be lowered to a normal electrode submerged arc heating position, and the accurate positioning of the position is realized, so that the accurate temperature control, the accurate component control, the molten steel deep desulfurization control and the superheat degree control are realized. Comprises a support; the device is characterized in that the support is rotationally connected with a screw rod, and the screw rod is driven to rotate by a synchronous belt transmission mechanism; a guide shaft is respectively arranged on the support and two sides of the screw rod, and the two guide shafts are parallel to the screw rod; the top parts of the two guide shafts are provided with upper mounting plates, and the top parts of the screw rods are rotationally connected with the upper mounting plates; a screw sliding block is assembled on the screw rod and is connected with a sliding plate, the sliding plate is positioned between the two guide shafts, and two sides of the sliding plate are in sliding connection with the corresponding guide shafts; the sliding plate is provided with a connecting plate, the first end of the connecting plate is connected with the sliding plate, and the second end of the connecting plate is connected with the electrode.
Description
Technical Field
The utility model belongs to the technical field of the iron and steel is smelted, especially, relate to a LF refining furnace electrode elevating gear.
Background
In the production and smelting of steel, in order to further reduce the oxygen content and the sulfur content in molten steel and finally obtain molten steel with higher purity and materials with excellent performance, submerged arc heating is carried out on the molten steel by an electrode of an LF refining furnace, so that the temperature of the molten steel can be further increased; meanwhile, the heat preservation effect can be realized. Under the condition of ensuring the temperature of the molten steel, a proper amount of alloy can be added, and the accurate control of the components is realized. And simultaneously, slag can be supplemented, so that the deep desulfurization of the molten steel is convenient to realize. By the electrode submerged arc heating mode, the molten steel casting temperature required by continuous casting can be ensured, the superheat degree control is stable, and the improvement of the casting blank quality is facilitated.
For steel grades which do not pass through submerged arc heating of LF refining electrodes, accurate control of composition control, control of oxygen content, control of lower sulfur content and control of superheat degree are difficult to realize. Moreover, in the case of low temperature and substandard components, only the melting down can be performed. This seriously affects the production rhythm, causes unplanned water stop, and reduces the overall metallurgical production efficiency.
Disclosure of Invention
The utility model provides an LF refining furnace electrode lifting device aiming at the defects existing in the prior art. The electrode of the LF refining furnace can be lowered to a normal electrode submerged arc heating position, and the accurate positioning of the position is realized, so that the accurate temperature control, the accurate component control, the molten steel deep desulfurization control and the superheat degree control are realized. Further improving the quality of the steel billet.
In order to achieve the purpose, the utility model adopts the following technical proposal, comprising a support; the device is characterized in that the support is rotationally connected with a screw rod, and the screw rod is driven to rotate by a synchronous belt transmission mechanism; a guide shaft is respectively arranged on the support and two sides of the screw rod, and the two guide shafts are parallel to the screw rod; the top parts of the two guide shafts are provided with upper mounting plates, and the top parts of the screw rods are rotatably connected with the upper mounting plates; a screw sliding block is assembled on the screw rod and is connected with a sliding plate, the sliding plate is positioned between the two guide shafts, and two sides of the sliding plate are in sliding connection with the corresponding guide shafts; the sliding plate is provided with a connecting plate, the first end of the connecting plate is connected with the sliding plate, and the second end of the connecting plate is connected with the electrode.
Furthermore, the second end of the connecting plate is connected with an installation block through a spring, a circular installation hole for placing an electrode is formed in the installation block, the top of the electrode penetrates through the circular installation hole, a puller pin is arranged on one side of the installation block and is in threaded connection with the installation block, and the end of the puller pin penetrates through the outer wall of the installation block and then is tightly propped against the electrode.
Furthermore, the mounting block and the jacking pin are made of non-conductive materials.
Furthermore, the first end of the spring is fixedly connected with the connecting plate, and the second end of the spring is connected with the mounting block.
Furthermore, a shaft shoulder is arranged at the top of the guide shaft, a through hole is formed in the upper mounting plate, the top of the guide shaft penetrates through the through hole, the upper mounting plate is seated on the shaft shoulder, and a thread is further arranged at one end, penetrating out of the upper mounting plate, of the guide shaft and is a threaded end; the upper mounting plate is tightly close to the shaft shoulder by screwing the nut on the thread end.
Furthermore, the support comprises two support legs and a top table surface arranged above the two support legs.
Furthermore, the bottom end of the screw rod penetrates through the top table surface and is connected with the top table surface through a bearing, so that the screw rod can freely rotate relative to the top table surface.
Furthermore, the synchronous belt transmission mechanism comprises a first belt wheel and a second belt wheel, and the first belt wheel is connected with the second belt wheel through synchronous belt transmission; the first belt wheel is driven by a speed reducing motor which is arranged on the top table surface; the second belt wheel is arranged outside the end part of one end of the screw rod penetrating out of the top table board.
Compared with the prior art the utility model discloses beneficial effect.
The utility model discloses a motor cooperation hold-in range mode realizes the elevating movement of electrode, can realize the position point control of high accuracy, and the simultaneous transmission noise is little. It can realize the quick raising and lowering functions of electrode, is provided with the spring coupling mode simultaneously at the end of electrode, can play the cushioning effect on electrode contact hard object surface, avoids haring electrode and transmission.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.
FIG. 1 is a front view of an electrode lifter for an LF refining furnace.
FIG. 2 is a left side view of an electrode lifter of an LF refining furnace.
Fig. 3 is a partial view of fig. 1 from direction F.
In the figure, 1 is a motor, 2 is a speed reducer, 3 is a top table, 4 is a support, 5 is a belt wheel I, 6 is a speed reducer shaft, 7 is a synchronous belt, 8 is a belt wheel II, 9 is a screw shaft, 10 is a guide shaft, 11 is an upper mounting plate, 12 is a nut, 13 is a connecting plate, 14 is a spring, 15 is a mounting block, 16 is an electrode, 17 is a sliding plate, 18 is a screw rod, 19 is a pin, and 20 is a steel ladle.
Detailed Description
As shown in fig. 1-3, the specific embodiment: comprises a support 4; the support 4 is rotatably connected with a screw rod 18, and the screw rod 18 is driven to rotate by a synchronous belt transmission mechanism; a guide shaft 10 is respectively arranged on the support 4 and two sides of the screw rod 18, and the two guide shafts 10 are parallel to the screw rod 18; the bottoms of the two guide shafts 10 are fixedly connected with the support 4; the top parts of the two guide shafts 10 are provided with an upper mounting plate 11, and the top part of the screw rod 18 is rotatably connected with the upper mounting plate 11 through a bearing; the screw rod 18 is provided with a screw nut sliding block, the screw nut sliding block is connected with a sliding plate 17, the sliding plate 17 is positioned between the two guide shafts 10, and two sides of the sliding plate 17 are in sliding connection with the corresponding guide shafts 10; a connecting plate 13 is mounted on the sliding plate 17, a first end of the connecting plate 13 is connected with the sliding plate 17, and a second end of the connecting plate 13 is connected with the electrode 16.
Preferably, the second end of the connecting plate 13 is connected with a mounting block 15 through a spring 14, a circular mounting hole for placing an electrode 16 is formed in the mounting block 15, the top of the electrode 16 passes through the circular mounting hole, a tightening pin 19 is arranged on one side of the mounting block 15, the tightening pin 19 is in threaded connection with the mounting block 15, and the end of the tightening pin 19 passes through the outer wall of the mounting block 15 and then is tightened on the electrode 16. So that the electrodes 16 are integrally connected to the mounting block 15. The mounting block 15 and the tightening pin 19 are made of non-conductive materials. The first end of the spring 14 is fixedly connected with the connecting plate 13, and the second end of the spring 14 is connected with the mounting block 15.
Preferably, a shaft shoulder is arranged at the top of the guide shaft 10, a through hole is formed in the upper mounting plate 11, the top of the guide shaft 10 penetrates through the through hole, the upper mounting plate 11 is seated on the shaft shoulder, and a thread is further arranged at one end, penetrating out of the upper mounting plate 11, of the guide shaft 10 and is a threaded end; the upper mounting plate 11 is tightened against the shoulder by a nut 12 tightened onto the threaded end.
Preferably, the support 4 comprises two legs and a top deck 3 disposed above the two legs. The bottom end (or screw shaft 9) of the screw 18 penetrates through the top table top 3 and is connected with the top table top 3 through a bearing, so that the screw 18 can freely rotate relative to the top table top 3. The synchronous belt transmission mechanism comprises a first belt wheel 5 and a second belt wheel 8, and the first belt wheel 5 is in transmission connection with the second belt wheel 8 through a synchronous belt 7; the belt wheel I5 is driven by a speed reducing motor which consists of a motor 1 and a speed reducer 2; the speed reducing motor is arranged on the top table surface 3; the second belt wheel 8 is arranged outside the end part of one end of the screw rod 18 penetrating out of the top table top 3. The speed reducing motor acts, and the belt wheel I5 is arranged outside a motor shaft of the speed reducing motor; the first belt wheel 5 is driven to rotate, and the second belt wheel 8 rotates along with the first belt wheel through the synchronous belt 7; the screw 18 connected with it rotates relatively to the top table-board 3.
Specifically, when the motor is started, the speed reducer shaft 6 drives the belt wheel I5 to rotate, the synchronous belt 7 drives the belt wheel II 8 to rotate, the belt wheel II 8 drives the screw rod shaft 9 to rotate, and the screw rod shaft 9 drives the sliding plate 17 to move up and down, so that the up-and-down movement of the electrode 16 body is realized. The sliding plate 17 moves up and down and is guided by the guide shafts 10 on the left side and the right side, the upper ends of the guide shafts 10 are tightly connected with the upper mounting plate 11 through bolts, and the lower ends of the guide shafts 10 are fixedly connected with the top table surface 3.
A connecting plate 13 is fixedly connected to the side surface of the sliding plate 17, a spring 14 is fixedly connected to the other end of the connecting plate 13, and a mounting block 15 is fixedly connected to the other end of the spring 14. An electrode 16 mounting hole is formed in the center of the mounting block 15, and a pin 19 is mounted on the side face of the mounting block 15, so that the electrode 16 can be conveniently pushed tightly.
The working principle and the working process are as follows: after the molten steel is discharged from the converter, after the components and the temperature of the molten steel are adjusted in an argon station, the molten steel is hung to the heating position of an LF refining furnace, the fact that an argon pipeline of the molten steel is connected is confirmed, the flow and the pressure of the argon meet requirements, a ladle cover is lowered to a lower limit position, the synchronous belt 7 drives the screw rod 18 to run through the reduction gearbox by starting a motor, the electrode 16 is lowered to a submerged arc heating position, a power supply is switched on to heat the molten steel, meanwhile, alloy and slag are added, accurate component control and lifting of the purity of the molten steel are achieved, after heating is completed, the power supply is stopped, the electrode 16 is lifted to an upper limit position (the electrode 16 is lifted to be more than 300mm away from the surface of the molten steel) by using an electrode 16 lifting device, finally, temperature measurement sampling is carried out, and the molten steel is hung to continuous casting for casting operation after the components and the temperature meet requirements.
The utility model discloses can drop LF refining furnace electrode 16 to normal electrode submerged arc heating position, realize accurate control to temperature, the accurate control of composition, the dark desulfurization control of molten steel and superheat degree control etc for when discovering the abnormal conditions in the heating process, can promote electrode 16 rapidly, avoid electrode 16 dwell time in the molten steel too long, take place recarburization phenomenon and potential safety hazard, promote continuous high-efficient production operation rate.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (8)
1. An electrode lifting device of an LF refining furnace comprises a support; the device is characterized in that the support is rotationally connected with a screw rod, and the screw rod is driven to rotate by a synchronous belt transmission mechanism;
a guide shaft is respectively arranged on the support and two sides of the screw rod, and the two guide shafts are parallel to the screw rod;
the top parts of the two guide shafts are provided with upper mounting plates, and the top parts of the screw rods are rotationally connected with the upper mounting plates;
the screw rod is provided with a screw nut sliding block, the screw nut sliding block is connected with a sliding plate, the sliding plate is positioned between two guide shafts, and two sides of the sliding plate are in sliding connection with the corresponding guide shafts;
the sliding plate is provided with a connecting plate, the first end of the connecting plate is connected with the sliding plate, and the second end of the connecting plate is connected with the electrode.
2. The electrode lifting device of the LF refining furnace of claim 1, wherein: the second end of the connecting plate is connected with an installation block through a spring, a circular installation hole used for placing an electrode is formed in the installation block, the top of the electrode penetrates through the circular installation hole, a puller pin is arranged on one side of the installation block and is in threaded connection with the installation block, and the end portion of the puller pin penetrates through the outer wall of the installation block and then is tightly propped against the electrode.
3. The electrode lifting device of the LF refining furnace of claim 2, wherein: the mounting block and the jacking pin are made of non-conductive materials.
4. The electrode lifting device of the LF refining furnace as recited in claim 2 or 3, characterized in that: the first end of the spring is fixedly connected with the connecting plate, and the second end of the spring is connected with the mounting block.
5. The electrode lifting device of the LF refining furnace of claim 1, wherein: a shaft shoulder is arranged at the top of the guide shaft, a through hole is formed in the upper mounting plate, the top of the guide shaft penetrates through the through hole, the upper mounting plate is seated on the shaft shoulder, and a thread is further arranged at one end, penetrating out of the upper mounting plate, of the guide shaft and is a threaded end; the upper mounting plate is tightly close to the shaft shoulder by screwing the nut on the thread end.
6. The electrode lifting device of the LF refining furnace of claim 1, wherein: the support comprises two support legs and a top table top arranged above the two support legs.
7. The electrode lifting device of the LF refining furnace of claim 6, wherein: the bottom end of the screw rod penetrates through the top table surface and is connected with the top table surface through a bearing, so that the screw rod can freely rotate relative to the top table surface.
8. The electrode lifting device of the LF refining furnace of claim 6, wherein: the synchronous belt transmission mechanism comprises a belt wheel I and a belt wheel II, and the belt wheel I is connected with the belt wheel II through synchronous belt transmission; the first belt wheel is driven by a speed reducing motor which is arranged on the top table surface; the second belt wheel is arranged outside the end part of one end of the screw rod penetrating out of the top table board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221383434.0U CN217650826U (en) | 2022-06-06 | 2022-06-06 | LF refining furnace electrode elevating gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221383434.0U CN217650826U (en) | 2022-06-06 | 2022-06-06 | LF refining furnace electrode elevating gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217650826U true CN217650826U (en) | 2022-10-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221383434.0U Active CN217650826U (en) | 2022-06-06 | 2022-06-06 | LF refining furnace electrode elevating gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217650826U (en) |
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2022
- 2022-06-06 CN CN202221383434.0U patent/CN217650826U/en active Active
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