CN114087870A

CN114087870A - High-silicon-manganese alloy closed submerged arc furnace

Info

Publication number: CN114087870A
Application number: CN202111618831.1A
Authority: CN
Inventors: 徐海欣; 张云
Original assignee: Wuxi Bzone Heat Energy Equipment Co ltd
Current assignee: Wuxi Bzone Heat Energy Equipment Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-02-25

Abstract

The invention is suitable for the technical field of submerged arc furnaces, and provides a high-silicon-manganese alloy closed submerged arc furnace, through the characteristic that an electrode needs to be lifted, a fixed disc is driven to lift while the electrode is lifted, the lifting of the fixed disc drives a telescopic screw rod of each clamping piece to lift and rotate, so that a scissor fork structure is driven to transversely expand or contract, the clamping degrees of arc-shaped clamping pieces on a sealing ring are different, and the sealing ring is clamped and kept in a sealing state after the electrode is lowered; otherwise, when the electrode rises, the sealing ring is loosened, so that the electrode is conveniently loosened, and the sealing ring is prevented from being rubbed with the electrode greatly. Simultaneously still through being provided with the water course in with the sealing washer, be used for clearing up the heat on the sealing washer on the one hand, on the other hand is used for changing insulating flexible sealing washer inflation degree for the sealing washer no matter how much because the friction consumes, can control its parcel degree to the electrode outer wall through the water injection volume of water course all the time.

Description

High-silicon-manganese alloy closed submerged arc furnace

Technical Field

The invention belongs to the technical field of submerged arc furnaces, and particularly relates to a high-silicon-manganese alloy closed submerged arc furnace.

Background

The submerged arc furnace is also called electric arc furnace or resistance furnace. It is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent and solvent. The method is mainly used for producing ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicomanganese and other ferroalloys, and is an important industrial raw material in the metallurgical industry and a chemical raw material such as calcium carbide and the like. It features use of carbon or magnesium refractory as furnace lining and self-culturing electrode. The electrode is inserted into the furnace charge to carry out submerged arc operation, the energy and current of the electric arc are utilized to pass through the furnace charge, the energy is generated due to the resistance of the furnace charge to smelt metal, the charging is carried out sequentially, the iron slag is discharged intermittently, and the continuous operation is carried out. The transformer of the submerged arc furnace has continuous and stable load, low impedance voltage, more voltage regulation stages, smaller stage difference and strong overload capacity. Can be divided into two types of loaded voltage regulation and non-excited voltage regulation. The constant-capacity output of the first stages and the constant-current output of the last stages are common. The ore furnace is an industrial electric furnace with huge power consumption. The device mainly comprises a furnace shell, a furnace cover, a furnace lining, a short net, a water cooling system, a smoke exhaust system, a dust removal system, an electrode shell, an electrode pressing and lifting system, a feeding and discharging system, a holder, a burner, a hydraulic system, a submerged arc furnace transformer, various electrical equipment and the like.

The electrode in the ore smelting furnace goes up and down in the stove under operating of operating system to can insert the centre of furnace charge and carry out the submerged arc operation, but because the electrode goes up and down to lead to the sealing device of electrode and bell junction to receive frequent friction, and then lead to sealing device to receive wearing and tearing, still produce easily when consuming very fast and reveal, cause the incident.

Disclosure of Invention

The invention provides a high-silicon-manganese alloy closed submerged arc furnace, which aims to solve the problems in the background technology.

The invention is realized in such a way that the high-silicon-manganese alloy closed submerged arc furnace comprises a furnace shell and a furnace cover covered on the furnace shell, wherein a through hole is formed in the furnace cover and used for lifting and descending of an electrode, a sealing ring with adjustable expansion degree is arranged between the through hole and the outer wall of the electrode, and a clamping assembly for adjusting the clamping degree of the sealing ring along with the lifting and descending of the electrode is arranged on the outer side of the sealing ring.

Preferably, one side of the sealing ring, which is attached to the outer wall of the electrode, is provided with a widening layer, and the widening layer is made of an insulating flexible material.

Preferably, a water channel is arranged in the sealing ring, and a water port is arranged on the upper surface of the sealing ring of the water channel and used for increasing and decreasing the internal water quantity.

Preferably, the bottom surface of the sealing ring is provided with an annular bulge, and the annular bulge is in inserted fit with the annular groove in the bottom wall of the through hole.

Preferably, the clamping component comprises a plurality of single clamping pieces consisting of telescopic screws, a scissor fork structure and arc-shaped clamping pieces, and the clamping pieces are annularly arranged on the outer side of the sealing ring.

Preferably, every in the holder, flexible screw rod drives through reciprocating cut the fork structure and open and shut, the arc clamping piece is installed cut fork structure one end, the inside wall laminating of arc clamping piece the sealing washer lateral wall, the other end of cutting the fork structure is installed through the hole inside wall.

Preferably, the scissors structure is composed of an upper parallelogram and a lower parallelogram which are linked, the upper parallelogram is smaller than the lower parallelogram, a lower hinge point of the upper parallelogram is rotatably connected with the lower end of the telescopic screw rod, an upper hinge point is in threaded connection with the telescopic screw rod, a left hinge point of the lower parallelogram is in sliding connection with a first vertical groove formed on the side wall of the through hole through a first sliding foot, and a right hinge point is in sliding connection with a second vertical groove formed on the side wall of the arc-shaped clamping piece through a second sliding foot.

Preferably, the telescopic screw comprises an upper multi-stage sleeve rod and a lower threaded rod, the upper end of the upper multi-stage sleeve rod is hinged and fixed to the bottom surface of the electrode fixing disc, and the lower end of the lower threaded rod is in threaded connection with the scissor fork structure.

Preferably, the part of the electrode inside the furnace shell is also provided with a sealing ring, and the sealing ring is provided with a flange inserted into a concave ring groove on the inner surface of the furnace cover.

Compared with the prior art, the invention has the beneficial effects that: according to the high-silicon-manganese alloy closed submerged arc furnace, the electrode needs to be lifted, the fixed disc is driven to lift while the electrode is lifted, the lifting of the fixed disc drives the telescopic screw rod of each clamping piece to lift and rotate, so that the scissor fork structure is driven to transversely expand or contract, the clamping degrees of the arc-shaped clamping pieces on the sealing ring are different, and the sealing ring is clamped and kept in a sealing state after the electrode is lowered; otherwise, when the electrode rises, the sealing ring is loosened, so that the electrode is conveniently loosened, larger friction between the sealing ring and the electrode is avoided, and the long-term use of the sealing ring is ensured.

Still be used for clearing up the heat on the sealing washer on the one hand through being provided with the water course in the sealing washer simultaneously, on the other hand is used for changing insulating flexible sealing washer inflation degree for the sealing washer no matter how much because the friction consumes, can control its parcel degree to the electrode outer wall through the water injection volume of water course all the time, guarantees that sealed firm between the two.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic view of the clamping structure of the arc-shaped clamping piece and the sealing ring in the invention;

in the figure:

1. a furnace shell;

2. a furnace cover; 21. a through hole; 22. an annular groove; 23. a concave ring groove;

3. an electrode; 31. fixing the disc; 32. sealing the connecting ring; 33. a flange;

4. a seal ring; 41. a widening layer; 42. a water channel; 43. a water gap; 44. an annular projection;

5. a clamping component; 51. a telescopic screw; 511. a multi-stage loop bar is arranged; 512. a lower threaded rod; 52. a scissor structure; 53. an arc-shaped clamping piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a sealed submerged arc furnace of high silicon manganese alloy, includes stove outer covering 1 and covers the bell 2 that closes on stove outer covering 1, and sets up through hole 21 on bell 2 and be used for the elevating movement of electrode 3, is provided with the sealing washer 4 of adjustable inflation degree between through hole 21 and electrode 3 outer wall, and the outside of sealing washer 4 is provided with along with electrode 3 goes up and down to adjust the locking assembly 5 that embraces of the tight degree of clamp to sealing washer 4.

In the embodiment, the characteristic that the electrode 3 needs to be inserted into the furnace burden again when in use is matched, and the sealing ring 4 is clamped and kept in a sealing state after the electrode 3 is lowered; otherwise, when the electrode 3 rises, the sealing ring 4 is loosened, so that the electrode 3 is conveniently loosened, large friction between the sealing ring 4 and the electrode 3 is avoided, and the long-term use of the sealing ring 4 is ensured.

One side of the sealing ring 4, which is attached to the outer wall of the electrode 3, is provided with a widening layer 41, and the widening layer 41 is made of an insulating flexible material.

In this embodiment, one side through being close to electrode 3 at sealing washer 4 sets up and adds wide layer 41, on the one hand increase with the laminating area of electrode 3 outer wall, guarantee sealed intensity, on the other hand adds wide layer 41's setting and is used for rubbing the consumption, avoid sealing washer 4 to be used for quick consumption to finish, it is used for isolated electrode 3 to avoid electrically conducting to add wide layer 41 to set up the insulation, set up to flexible material simultaneously, cooperate water course 42 to carry out the control of inflation degree on the one hand, the convenience is filled the interval between through-hole 21 and the electrode 3, the flexible laminating electrode 3 outer wall that can be better of on the other hand.

A water passage 42 is provided in the seal ring 4, and a water port 43 is provided in the water passage 42 on the upper surface of the seal ring 4 to increase or decrease the amount of internal water.

In this embodiment, set up water course 42 in sealing washer 4 inside, carry out water injection control in water course 42 to sealing washer 4 through mouth of a river 43, on the one hand, be used for cooling down sealing washer 4, avoid electrode 3's heat transfer to influence the life of sealing washer 4 on sealing washer 4, on the other hand is through annotating the plumpness of filling or how much control sealing washer 4 to water course 42 normal water, and then control sealing washer 4 diameter, finally control the clearance between through hole 21 and the electrode 3 is filled to sealing washer 4, guarantee when needs are sealed, sealing washer 4 remains throughout the inseparable of laminating to electrode 3.

The bottom surface of the sealing ring 4 is provided with an annular bulge 44, and the annular bulge 44 is in inserted fit with the annular groove 22 on the bottom wall of the through hole 21.

In the present embodiment, the annular protrusion 44 is provided on the bottom surface of the seal ring 4 and is inserted into the annular groove 22 on the bottom surface of the through-hole 21, so as to position the seal ring 4 and prevent the seal ring 4 from being displaced, and to simply seal the gap between the seal ring 4 and the through-hole 21 and prevent the gap therebetween from leaking.

The holding and clamping assembly 5 comprises a plurality of single clamping pieces consisting of a telescopic screw 51, a scissor fork structure 52 and an arc-shaped clamping piece 53, and the plurality of clamping pieces are annularly arranged on the outer side of the sealing ring 4. In every holder, telescopic screw 51 drives through reciprocating and cuts fork structure 52 and open and shut, and arc clamping piece 53 is installed in the one end of cutting fork structure 52, and the inside wall laminating sealing washer 4 lateral wall of arc clamping piece 53, the other end of cutting fork structure 52 is installed in through hole 21 inside wall.

In this embodiment, the fixed disk 31 is driven to ascend and descend by the electrode 3, the telescopic screw 51 of each clamping piece is driven to ascend and descend and rotate by the ascending and descending of the fixed disk 31, so that the scissor structure 52 is driven to transversely expand or contract, and the clamping degree of the arc-shaped clamping piece 53 to the sealing ring 4 is different.

In the embodiment, a plurality of single clamping pieces are annularly arranged around the sealing ring 4, and each clamping piece is driven by the lifting of the fixed disc 31 to synchronously adjust the clamping tightness, so that the sealing ring 4 is clamped and kept in a sealing state after the electrode 3 is lowered; otherwise, when the electrode 3 rises, the sealing ring 4 is loosened, so that the electrode 3 is conveniently loosened, large friction between the sealing ring 4 and the electrode 3 is avoided, and the long-term use of the sealing ring 4 is ensured.

The scissors structure 52 is composed of an upper parallelogram and a lower parallelogram which are linked, the upper parallelogram is smaller than the lower parallelogram, a lower hinge point of the upper parallelogram is rotatably connected with the lower end of the telescopic screw rod 51, an upper hinge point is in screw joint with the telescopic screw rod 51, a left hinge point of the lower parallelogram is in sliding connection with a first vertical groove formed on the side wall of the through hole 21 through a first sliding foot, and a right hinge point is in sliding connection with a second vertical groove formed on the side wall of the arc-shaped clamping piece 53 through a second sliding foot.

In this embodiment, the lowest end of the lower threaded rod 512 is fixed with the lower hinge point of the upper parallelogram by idle rotation, i.e. fixed by a bearing, the lower section of the lower threaded rod 512 is screwed with the upper hinge point nut of the upper parallelogram, so that when the lower threaded rod 512 rotates, the position of the nut at the upper hinge point is driven to change, and further the distance between the upper hinge point and the lower hinge point is changed, so as to deform the upper parallelogram, the middle part between the upper parallelogram and the lower parallelogram is arranged in the same rod, so that the upper parallelogram and the lower parallelogram are in linkage form, and further the lower parallelogram is driven to change in the same way, the lower parallelogram drives the transverse distance to change, because one side is the inner wall of the through hole 21, only the movable arc-shaped clamping piece 53 at the other side can be pushed to move, and finally the position of each arc-shaped clamping piece 53 is changed, the clamping tightness of the middle sealing ring 4 is adjusted.

The telescopic screw 51 comprises an upper multi-stage sleeve 511 and a lower screw 512, the upper end of the upper multi-stage sleeve 511 is hinged and fixed on the bottom surface of the electrode 3 fixing disc 31, and the lower end of the lower screw 512 is screwed with the scissor structure 52.

In this embodiment, the upper end of the upper multi-stage sleeve 511 is hinged and fixed on the bottom surface of the electrode 3 fixing disc 31, so that when the electrode 3 goes up and down to drive the fixing disc 31 to go up and down, the fixing disc 31 drives the upper multi-stage sleeve 511 to expand step by step or contract step by step, the upper multi-stage sleeve 511 is set to contract step by step in advance when going down, and expand step by step when going up, the lower threaded rod 512 and the lowest rod of the upper multi-stage sleeve 511 are in a sleeved threaded connection form before going up, that is, the lower threaded rod 512 can be rotated to retract into the lowest rod, so that when the upper multi-stage sleeve 511 cannot move, the lower threaded rod 512 expands and rotates.

The part of the electrode 3 located inside the furnace shell 1 is also provided with a sealing ring 32, and the sealing ring 32 is provided with a flange 33 inserted into the concave ring groove 23 on the inner surface of the furnace cover 2.

In the embodiment, the electrode 3 is provided with the sealing joint ring 32 at the inner part of the furnace shell 1, so that the sealing joint ring 32 can be limited when ascending to the peak, meanwhile, the sealing joint ring 32 can be attached to the lower surface of the furnace cover 2, and the flange 33 arranged on the upper surface of the sealing joint ring 32 is matched to be inserted into the concave ring groove 23 on the lower surface of the furnace cover 2, so that the gap between the through hole 21 and the electrode 3 is blocked after the sealing ring is loosened, and the leakage is avoided.

The working principle and the using process of the invention are as follows: after the invention is installed, when the lifting system of the electrode 3 drives the electrode 3 to descend in the furnace shell 1, the fixed disk 31 on the electrode 3 descends along with the electrode 3, the descending of the fixed disk 31 drives the upper multi-stage loop bar 511 of the telescopic screw 51 fixed on the lower surface of the fixed disk to contract step by step until the complete contraction is completed, then the fixed disk continues descending to drive the lower screw rod 512 to rotate, the rotation of the lower screw rod 512 drives the upper hinge point nut sleeved on the outer wall of the fixed disk to ascend and descend along with the upper hinge point nut, so as to compress the distance between the upper hinge point and the lower hinge point of the upper parallelogram, thereby compressing the upper parallelogram and the lower parallelogram, namely the longitudinal direction of the whole scissor structure 52 belt, so that the parallelogram expands transversely, the left hinge point of the lower parallelogram is propped in the wall of the through hole 21, so that the right hinge point of the lower parallelogram pushes the arc-shaped clamping piece 53 to fold towards the middle, the sealing ring 4 in the middle is clamped, so that the sealing ring 4 in the middle is tightened, and the electrode 3 inserted into furnace burden is clamped and fixed to realize the sealing effect.

When the electrode 3 is pulled out from the furnace charge under the driving of the lifting system, and the electrode 3 moves upwards, the fixed disk 31 also ascends along with the ascending, the fixed disk 31 drives the upper multi-stage loop bar 511 to move upwards, the upper multi-stage loop bar 511 drives the lower threaded rod 512 to move upwards and rotate, the lower threaded rod 512 is driven to rotate, the rotation of the lower threaded rod 512 drives the upper hinge point of the upper parallelogram of the scissor structure 52 to slowly move upwards, so that the whole scissor structure 52 is longitudinally pulled open and transversely contracted, the right hinge point of the lower parallelogram pulls the arc-shaped clamping piece 53 to move outwards, the clamping of the sealing ring 4 is released, the clamping of the sealing ring 4 to the electrode 3 is also released, the electrode 3 can be pulled out more smoothly and easily, the friction between the electrode and the arc-shaped clamping piece is reduced, after the lower threaded rod 512 completely rotates, the upper multi-stage loop bar 511 gradually expands until the electrode is completely opened, meanwhile, the sealing joint ring 32 is attached to the lower surface of the furnace cover 2 in the process of moving the electrode 3 upwards, and the flange 33 on the upper surface of the sealing joint ring 32 is inserted into the concave ring groove 23 to seal the through hole 21.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A high silicon manganese alloy closed submerged arc furnace is characterized in that: close including stove outer covering (1) and lid bell (2) on the stove outer covering (1), just set up through hole (21) on bell (2) and be used for the elevating movement of electrode (3) through hole (21) with be provided with sealing washer (4) of adjustable expansion degree between electrode (3) outer wall, the outside of sealing washer (4) is provided with along with electrode (3) lifting control is right sealing washer (4) clamp assembly (5) of holding of tight degree of clamp.

2. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 1, wherein: sealing washer (4) laminating one side of electrode (3) outer wall sets up to widen layer (41), should widen layer (41) for insulating flexible material.

3. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 1, wherein: a water channel (42) is arranged in the sealing ring (4), and a water opening (43) is formed in the upper surface of the sealing ring (4) of the water channel (42) and used for increasing and decreasing the internal water quantity.

4. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 1, wherein: an annular bulge (44) is formed in the bottom surface of the sealing ring (4), and the annular bulge (44) is in inserted connection and matching with the annular groove (22) in the bottom wall of the through hole (21).

5. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 1, wherein: embrace and press from both sides subassembly (5) and include a plurality ofly by flexible screw rod (51), cut a fork structure (52) and arc clamping piece (53) the single holder of constituteing, it is a plurality of the holder annular sets up sealing washer (4) outside.

6. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 5, wherein: every in the holder, telescopic screw (51) drives through reciprocating cut fork structure (52) and open and shut, install arc clamping piece (53) cut fork structure (52) one end, the inside wall laminating of arc clamping piece (53) sealing washer (4) lateral wall, the other end of cutting fork structure (52) is installed through hole (21) inside wall.

7. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 5, wherein: the scissors fork structure (52) is composed of an upper parallelogram and a lower parallelogram which are linked, the upper parallelogram is smaller than the lower parallelogram, the lower hinge point of the upper parallelogram is rotatably connected with the lower end of the telescopic screw rod (51), the upper hinge point is in threaded connection with the telescopic screw rod (51), the left hinge point of the lower parallelogram is in sliding connection with a first vertical groove formed in the side wall of the through hole (21) through a first sliding foot, and the right hinge point is in sliding connection with a second vertical groove formed in the side wall of the arc-shaped clamping piece (53) through a second sliding foot.

8. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 5, wherein: the telescopic screw rod (51) comprises an upper multi-stage sleeve rod (511) and a lower threaded rod (512), the upper end of the upper multi-stage sleeve rod (511) is hinged and fixed to the bottom surface of the electrode (3) fixing disc (31), and the lower end of the lower threaded rod (512) is in threaded connection with the scissor fork structure (52).

9. The high-silicon silicomanganese alloy closed submerged arc furnace of claim 1, wherein: the part of the electrode (3) positioned in the furnace shell (1) is also provided with a sealing joint ring (32), and a flange (33) is arranged on the sealing joint ring (32) and is inserted into a concave ring groove (23) on the inner surface of the furnace cover (2).