CN217223582U - Drainage sand sintering layer opening breaking device - Google Patents
Drainage sand sintering layer opening breaking device Download PDFInfo
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- CN217223582U CN217223582U CN202220870569.3U CN202220870569U CN217223582U CN 217223582 U CN217223582 U CN 217223582U CN 202220870569 U CN202220870569 U CN 202220870569U CN 217223582 U CN217223582 U CN 217223582U
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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
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Abstract
The utility model relates to a drainage sand sintering layer breach device, including push pipe structure spare, bridge type base, the push pipe structure spare comprises the push pipe and fixes the bracket at the push pipe middle part, and the upper end of bracket is prefabricated into by refractory material with lower mouth of a river end shape matched with circular slot, the lower extreme refractory material prefabricated construction and the long mouth of a river end shape of bracket cooperate, bridge type base places on middle package be built by contract, the bracket is placed on bridge type base. Compared with the prior art, the beneficial effects of the utility model are that: the automatic casting of the ladle is realized, the quality of the molten steel is not influenced, accidents such as changing the molten steel into steel, making waste and the like are reduced, the processing time of the accidents that the molten steel does not open automatically is shortened, and the economic benefit of a steel mill is improved.
Description
Technical Field
The utility model relates to a steelmaking technical field especially relates to a drainage sand sintering layer breach device.
Background
The ladle is used in steel plants for receiving and transporting molten steel, casting and the like. Before molten steel enters a steel ladle, powder-shaped drainage sand needs to be filled on the sliding plate in the steel ladle casting steel flow channel, then the molten steel is poured, when the steel ladle is cast, the steel ladle sliding plate is opened, the molten steel flows out from a steel ladle water outlet along with the drainage sand, and the drainage sand plays a drainage role. However, when the smelting time is too long, the temperature of the molten steel is not properly controlled, or the quality of the drainage sand fluctuates, the thickness of the sintered layer of the drainage sand, which is in contact with the molten steel, at the uppermost end of the steel ladle flow channel is increased. When the ladle is cast, the molten steel is blocked by the sintered layer of the drainage sand, and the molten steel cannot automatically flow out.
The prior art solves the problems that: and blowing oxygen into the steel flow channel from the ladle drain outlet to ensure that the sintering layer and the oxygen are fully combusted, the sintering layer is burnt, and at the moment, the molten steel can flow out from the ladle drain outlet. Although the method can be used for casting the ladle, oxygen blowing causes secondary pollution to molten steel, so that the oxygen content in the molten steel is increased, the quality of the molten steel is influenced, a steel mill is forced to degrade or scrap the molten steel of the ladle, and the economic benefit loss is large.
In conclusion, how to realize ladle casting on the premise of ensuring the molten steel quality is a problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a drainage sand sintering layer breach device to realize that the ladle is automatic to be opened and water, do not influence the quality of molten steel simultaneously, reduce the molten steel and change the emergence of accident such as steel, useless, shorten the processing time that the molten steel is not from opening the accident, improve steel mill economic benefits.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a drainage sand sintering layer breaching device, includes push pipe structure, bridge type base, push pipe structure comprises push pipe and the bracket of fixing at the push pipe middle part, and the upper end of bracket is prefabricated into by refractory material and is gone up a mouthful shape matched with circular slot with mouth of a river end down, the lower extreme refractory material prefabricated construction of bracket and the mouth of a river end up mouthful shape and cooperate, bridge type base places on middle ladle cover, the bracket is placed on bridge type base.
The bridge-type base comprises U-shaped supports and bases, and the bases are fixed at the bottoms of two support legs of the U-shaped supports.
The bracket comprises a metal framework and a refractory material prefabricated layer, the metal framework and the jacking pipe are of an integral structure, and the refractory material prefabricated layer is wrapped outside the metal framework.
The top pipe can be melted when contacting the molten steel.
The upper end of the jacking pipe is a tip, and the wall thickness of the jacking pipe is 5-50 mm.
The length of a jacking pipe at the upper end of the bracket is 50-200 mm greater than the distance from the upper surface of the nozzle pocket brick to the lower surface of the lower nozzle.
The lower portion of the top pipe is inserted into the long nozzle, the upper portion of the top pipe is inserted from the lower opening of the lower nozzle, a long nozzle sealing gasket is arranged between the long nozzle and a refractory material prefabricated structure at the lower end of the bracket, and a lower nozzle sealing gasket is arranged between the lower nozzle and a circular groove at the upper end of the bracket.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the utility model discloses can realize not influencing the quality of molten steel, reduce the molten steel because of the quality reason compelled to change the emergence of quality accidents such as steel, abandonment, especially few to some output, the molten steel variety that the added value is high (like silicon steel, military steel), if meet the drainage sand and do not open the accident by oneself, adopt prior art to handle, that this kind of molten steel will be useless because of the oxide exceeds standard, and the steel mill loss can reach million yuan, if adopt the utility model discloses just can solve.
2) The treatment time of the molten steel non-self-opening accident is shortened, and the operation is simple and convenient.
3) The production rhythm of continuous casting production forced to be changed due to quality reasons is reduced.
4) The safety risk of operating personnel is reduced, because when meeting ladle drainage sand not from the open accident, the workman must take the oxygen hose to carry out the oxygen operation from lower water gap, and molten steel can flow from lower water gap at any time, and after the molten steel flows out, must remove the oxygen hose fast on one side, operates ladle elevating system and descends the ladle, is connected well with the long mouth of a river, and high temperature molten steel is down flowing always this moment, and the operation process is very dangerous, takes place the scald accident easily.
Drawings
FIG. 1 is a sectional view of the combination position of a steel ladle drainage sand sintered layer crevasse device, a steel ladle and a tundish.
Fig. 2 is a sectional view of the header structure.
Fig. 3 is a perspective view of the push pipe structure.
Fig. 4 is a perspective view of the bridge base.
Fig. 5 is a perspective view of the drain seal.
Fig. 6 is a perspective view of a long nozzle packing.
In the figure: 1 steel ladle, 2 air-permeable brick cup, 3 nozzle brick cup, 4 water supply nozzle, 5 sliding plate mechanism, 6 water discharge nozzle, 7 long nozzle moving mechanism, 8 tundish, 9 long nozzle, 10 push pipe, 11 bridge base, 11-1U-shaped support, 11-2 base, 12 tundish cover, 13 water discharge nozzle sealing gasket, 14 long nozzle sealing gasket, 15 bracket, 15-1 metal framework and 15-2 push pipe refractory material prefabricated layer.
Detailed Description
The following further describes the embodiments of the present invention:
as shown in fig. 1-6: a drainage sand sintered layer cracking method comprises the following steps:
1) firstly, processing and manufacturing a pipe jacking structural part, wherein the pipe jacking structural part comprises a pipe jacking 10 and a bracket 15 fixed in the middle of the pipe jacking 10, the upper end of the bracket 15 is prefabricated into a circular groove matched with the shape of the lower opening of the lower water gap by a refractory material, and the prefabricated structure of the refractory material at the lower end of the bracket is matched with the shape of the upper opening of the long water gap 9;
2) when the ladle 1 is ready to cast molten steel on a ladle turret at a casting level, after a sliding plate is opened, only a part of drainage sand is left, the molten steel is submerged, and a ladle drainage sand non-self-opening accident occurs, at the moment, a sliding plate mechanism is closed firstly, then a ladle turret lifting mechanism is operated to lift the ladle 1, then a long nozzle moving mechanism 7 is operated to move a long nozzle 9 to a proper position, then a long nozzle sealing gasket 14 is placed in the upper opening of the long nozzle 9, then a lower nozzle sealing gasket 13 is placed in a circular groove at the upper end of a bracket 15, then the lower end of a top pipe 10 is inserted into the long nozzle 9, then the long nozzle moving mechanism 7 is operated to move the long nozzle 9 and a top pipe structural member to a casting position, so that a part of the upper end of the top pipe 10 is inserted into a steel flowing channel of a lower nozzle 6, the insertion depth is not more than half of the length of the lower nozzle 6, and the top pipe 10 is prevented from touching an upper sliding plate, the bridge type bases 11 are respectively placed on the left and the right of the lower part of the bracket 15, the bridge type bases 11 are placed on a tundish cover 12, the long water gap moving mechanism 7 is operated to move the long water gap 9 downwards by 30-300 mm, so that the weight of a pipe-jacking structural member is completely dropped on the bridge type bases 11, then the sliding plate mechanism 5 is opened, the ladle revolving platform lifting mechanism is operated to make the ladle 1 slowly fall downwards, at the moment, the upper end of the pipe jacking 10 moves upwards from the lower water gap 6 to make relative motion (actually, the steel ladle does not move) towards the upper water gap 4, the upper tip of the pipe jacking 10 moves to the circular groove at the upper end of the bracket 15 to completely seal the lower water gap 6, at the moment, the upper tip of the pipe jacking 10 can prop up the drainage sand layer, the upper tip of the pipe jacking 10 is in direct contact with molten steel, only 1-10 minutes is needed, the upper tip of the pipe jacking 10 can be melted by the molten steel, and the molten steel can flow out along the pipeline inside the pipe jacking 10, at the beginning, the diameter of the pipeline is smaller, the flow rate of molten steel is slow, but the molten steel can melt all the internal pipelines of the top pipe along with the time, so that the normal casting speed can be basically achieved; when the pipeline part of the top pipe 10 is melted, only one bracket 15 with holes is left, and because the lower nozzle sealing gasket 13 is arranged between the lower nozzle 6 and the circular groove at the upper end of the bracket 15 for sealing and the long nozzle sealing gasket 14 is arranged between the circular table at the lower end of the bracket 15 and the long nozzle 9 for sealing, the whole process of casting molten steel does not directly contact with air, and the quality of the molten steel is not influenced.
3) After the ladle casting is finished, the sliding plate is closed, the rotary table lifting mechanism is operated, the ladle 1 is lifted, the bridge type base 11 is dismounted, the long nozzle moving mechanism 7 is operated to move away the long nozzle 9, and the rest bracket part of the top pipe structural part is dismounted.
A device adopted by a drainage sand sintering layer opening breaking method comprises a top pipe structural part and a bridge type base 11, wherein the top pipe structural part is composed of a top pipe 10 and a bracket 15 fixed in the middle of the top pipe 10, the upper end of the bracket 15 is prefabricated into a circular groove matched with the shape of the lower opening of a lower water opening 6 by a refractory material, the prefabricated structure of the refractory material at the lower end of the bracket 15 is matched with the shape of the upper opening of a long water opening 9, the bridge type base 11 is placed on a tundish cover 12, and the bracket 15 is placed on the bridge type base 11.
The bridge-type base 11 comprises a U-shaped support 11-1 and a base 11-2, and the bases 11-2 are fixed at the bottoms of two legs of the U-shaped support 11-1.
The bracket 15 comprises a metal framework 15-1 and a refractory material prefabricated layer 15-2, the metal framework 15-1 and the jacking pipe 10 are of an integral structure, and the refractory material prefabricated layer 15-2 is wrapped outside the metal framework 15-1.
The top pipe 10 can be melted after contacting molten steel.
The upper end of the jacking pipe 10 is a tip, and the wall thickness of the jacking pipe 10 is 5-50 mm.
The length of the top pipe 10 at the upper end of the bracket is 50-200 mm greater than the distance from the upper surface of the nozzle brick cup 3 to the lower surface of the lower nozzle 6.
The lower part of the top pipe 10 is inserted into the long nozzle 9, the upper part of the top pipe 10 is inserted from the lower opening of the lower nozzle 6, a long nozzle sealing gasket 14 is arranged between the long nozzle 9 and a refractory prefabricated structure at the lower end of the bracket 15, and a lower nozzle sealing gasket 13 is arranged between the lower nozzle 6 and a circular groove at the upper end of the bracket 15.
The pipe-jacking structural member 10 can be made of steel, plastic, refractory materials and other materials, is high in required strength and high-temperature resistant, can be melted after being contacted with molten steel, and does not influence the quality of the molten steel, the size length of the lower end of the pipe jacking 10 is in accordance with the standard of being beneficial to fixing the pipe jacking 10 on the long nozzle 9, the diameter of the lower end of the pipe jacking 10 is in clearance fit with the diameter of an inner hole of the long nozzle 9, and the pipe-jacking refractory material prefabricated layer 15-2 is made of corundum.
The length of the bridge type base 11 is larger than the size of the diameter of a casting hole of the tundish cover 12, and the height is equal to the height from the upper surface of the tundish cover 12 to the upper opening surface of the long nozzle 9.
Example (b): taking a 180-ton steel ladle in a certain steel mill as an example;
1) as shown in fig. 1, a pipe-jacking structure is installed on the long nozzle 9, the pipe-jacking structure is composed of a pipe jacking 10 and a bracket 15, a round pipe below the bracket 15 is the lower end of the pipe jacking 10, a round pipe tip part above the bracket 15 is the upper end of the pipe jacking 10, the lower end of the pipe jacking 10 is inserted into the long nozzle 9, the upper end of the pipe jacking 10 is inserted into a runner channel hole of the down nozzle 6, a bridge type base 11 is respectively placed on the left side and the right side below the bracket 15, and the bridge type base 11 is placed on a tundish cover 12.
2) The diameter of the top pipe 10 is in clearance fit with the diameter of the upper nozzle 4, the diameter of the lower nozzle 6, the diameter of the inner hole of the sliding plate and the long nozzle 9, the diameter of the upper nozzle 4, the diameter of the lower nozzle 6 and the diameter of the inner hole of the sliding plate in the steel mill are all 80mm, the diameter of the upper part of the top pipe 10 is 74mm, the distance from the upper surface of the nozzle brick 3 to the lower surface of the lower nozzle is 850mm, the thickness of the sintering layer is estimated not to be more than 100mm according to experience, therefore, the length of the upper end of the top pipe 10 is 950mm, the wall thickness of the top pipe 10 is 10mm, the material of the top pipe 10 and the metal framework 15-1 is Q235 steel, the length of the lower end of the top pipe 10 is 300mm, the diameter is 84mm, because the diameter of the inner hole of the long nozzle is 90mm, the top pipe refractory material prefabricated layer 15-2 is made of corundum, the diameter of the metal framework 15-1 is 500mm, the thickness of the metal framework is 15mm, the diameter of the top pipe refractory material prefabricated layer 15-2 is 600mm, and the overall thickness of the top pipe refractory material prefabricated layer is 50 mm.
3) The shape and the size of the round groove at the upper end of the bracket 15 are matched with the shape and the size of the lower end of the lower nozzle 6, a lower nozzle sealing gasket 13 is arranged between the upper end and the lower end for sealing, the shape and the size of the lower nozzle sealing gasket 13 are matched with the upper end and the lower end, and the lower nozzle sealing gasket 13 is made of refractory fiber cotton.
4) The shape and the size of a circular truncated cone at the lower end of the bracket 15 are matched with the shape and the size of the upper opening of the long nozzle 9, a long nozzle sealing gasket 14 is arranged between the bracket and the long nozzle 9 for sealing, the shape and the size of the long nozzle sealing gasket 14 are matched with the bracket and the long nozzle sealing gasket 14 is made of refractory fiber cotton.
5) The process of manufacturing the pipe jacking structural part comprises the following steps: firstly processing a push pipe 10 and a metal framework 15-1, then designing a mould according to the determined size of a push pipe refractory material prefabricated layer 15-2, after the mould is made, putting the push pipe 10 and the metal framework 15-1 into the mould, then pouring corundum castable into the mould for casting, after the casting is finished, placing for 8-24 hours, demoulding, curing for 3-10 days, then placing into a drying kiln at 200-400 ℃ for drying for 2-4 days, and after the drying is finished, finishing the manufacture of the push pipe.
6) When the ladle is used, when the ladle 1 is ready to cast molten steel on the casting level of the ladle turret, after the sliding plate is opened, only a part of drainage sand is left, the molten steel is submerged, and the accident that the drainage sand of the ladle is not opened automatically occurs, at the moment, the sliding plate mechanism 5 is closed firstly, then the ladle turret lifting mechanism is operated to lift the ladle 1 by 1000mm, then the long nozzle moving mechanism 7 is operated to move the long nozzle 9 to a proper position, then the long nozzle sealing gasket 14 is placed in the upper opening of the long nozzle 9, then the lower nozzle sealing gasket 13 is placed in the circular groove at the upper end of the bracket 15, then the lower end of the top pipe 10 is inserted into the long nozzle 9, then the long nozzle moving mechanism 7 is operated to move the long nozzle 9 and the top pipe structural member to the steel casting position, so that a part of the upper end of the top pipe 10 is inserted into the steel flowing channel of the lower nozzle 6, but the insertion depth is not more than half of the length of the lower nozzle 6, so as to prevent the jacking pipe from touching the lower sliding plate, respectively placing a bridge type base 11 at the left and right below the bracket 15, wherein the height of the bridge type base 11 is 500mm, and the length is 1100mm, the bridge type base 11 is placed on the tundish cover 12, then operating the long nozzle moving mechanism 7 to move the long nozzle 9 downwards to make the weight of the jacking pipe structural part fall on the bridge type base 11, then opening the sliding plate mechanism 5, operating the ladle rotary table lifting mechanism to slowly fall the ladle 1, at the moment, the upper end of the jacking pipe 10 moves upwards from the lower nozzle 6 to the upper nozzle 4 and moves until the circular groove at the upper end of the bracket 15 seals the lower nozzle 6 completely, at the moment, the tip at the upper part of the jacking pipe 10 can burst the drainage sand sintered layer, the tip at the upper part of the jacking pipe 10 is in direct contact with molten steel, only 1-10 minutes is needed, the tip at the upper part of the jacking pipe 10 can be melted by the molten steel, at the moment, the molten steel can flow out along the pipeline inside the jacking pipe, when the pipe of the top pipe is melted, only one bracket 15 with holes is left, because a lower nozzle sealing gasket 13 is arranged between a lower nozzle 6 and a circular groove at the upper end of the bracket 15 for sealing and a long nozzle sealing gasket 14 is arranged between a circular table at the lower end of the bracket 15 for sealing, the whole process of molten steel casting does not directly contact with air, and the quality of the molten steel is not influenced.
7) After the ladle casting is finished, the sliding plate is closed, the rotary table lifting mechanism is operated to lift the ladle 1, the bridge type base 11 is disassembled, the long nozzle moving mechanism 7 is operated to move the long nozzle 9 to a proper position, and the rest bracket part is disassembled.
Claims (7)
1. The utility model provides a drainage sand sintering layer breaching device, its characterized in that includes push pipe structure spare, bridge type base, push pipe structure spare comprises push pipe and the bracket of fixing at the push pipe middle part, and the upper end of bracket is prefabricated into the circular slot with mouth of a river end shape matched with by refractory material, and the lower extreme refractory material prefabricated construction of bracket cooperatees with the mouth of a river end shape, bridge type base is placed on middle package be built by contract, the bracket is placed on bridge type base.
2. The device for perforating sintered layer of drainage sand according to claim 1, wherein said bridge-type base comprises U-shaped frame and base, and base is fixed to the bottom of two legs of said U-shaped frame.
3. The device for breaking the sintering layer of the drainage sand according to claim 1, wherein the bracket comprises a metal framework and a prefabricated layer of a refractory material, the metal framework and the top pipe are of an integral structure, and the prefabricated layer of the refractory material is wrapped outside the metal framework.
4. The drainage sand sintered layer breaching device according to claim 1, wherein the top tube is capable of melting after contacting molten steel.
5. The drainage sand sintered layer breaching device according to claim 1, wherein the top end of the top pipe is a pointed end, and the wall thickness of the top pipe is 5-50 mm.
6. The device for breaking the sintering layer of the drainage sand according to claim 1, wherein the length of a jacking pipe at the upper end of the bracket is 50-200 mm greater than the distance from the upper surface of the nozzle block to the lower surface of the lower nozzle.
7. The drainage sand sintered layer breaching device according to claim 1, wherein the lower portion of the top pipe is inserted into a long nozzle, the upper portion of the top pipe is inserted from the lower opening of a lower nozzle, a long nozzle gasket is placed between the long nozzle and the refractory prefabricated structure at the lower end of the bracket, and a lower nozzle gasket is placed between the lower nozzle and a circular groove at the upper end of the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220870569.3U CN217223582U (en) | 2022-04-15 | 2022-04-15 | Drainage sand sintering layer opening breaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220870569.3U CN217223582U (en) | 2022-04-15 | 2022-04-15 | Drainage sand sintering layer opening breaking device |
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| Publication Number | Publication Date |
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| CN217223582U true CN217223582U (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220870569.3U Active CN217223582U (en) | 2022-04-15 | 2022-04-15 | Drainage sand sintering layer opening breaking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114918410A (en) * | 2022-04-15 | 2022-08-19 | 鞍山钢铁冶金炉材科技有限公司 | Drainage sand sintered layer crevasse method and device |
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2022
- 2022-04-15 CN CN202220870569.3U patent/CN217223582U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114918410A (en) * | 2022-04-15 | 2022-08-19 | 鞍山钢铁冶金炉材科技有限公司 | Drainage sand sintered layer crevasse method and device |
| CN114918410B (en) * | 2022-04-15 | 2023-08-11 | 鞍山钢铁冶金炉材科技有限公司 | Method and device for breaking drainage sand sintered layer |
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