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Oxygen lance slag scraper

A technology of slag scraper and oxygen lance, which is applied in the direction of manufacturing converters and improving process efficiency, etc. It can solve the problems of poor slag scraping effect, short service life, and potential safety hazards, so as to achieve improved slag scraping effect and service life , the effect of prolonging the service life

Inactive Publication Date: 2018-03-23
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of poor slag scraping effect, short service life and potential safety hazards of the existing oxygen lance slag scraping equipment

Method used

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  • Oxygen lance slag scraper
  • Oxygen lance slag scraper
  • Oxygen lance slag scraper

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Embodiment approach

[0028] One embodiment, the drive mechanism 10 includes a cylinder base 18, a cylinder 17 and a fork 16, the cylinder 17 is fixed on the cylinder base 18 through its tail lug seat, and the movable end of the cylinder 17 is connected to one end of the fork 16, The other end of the fork 16 is hinged with the connecting rod-14; when the oxygen lance is scraped, the cylinder 17 controls the piston rod of the cylinder to stretch out, and the fork 16 at the movable end of the piston rod drives the connecting rod-14 to move, thereby pushing the driving shaft 3 rotations; and after finishing the slag scraping, the cylinder 17 controls the piston rod to retreat, and the fork 16 at the movable end of the piston rod drives the connecting rod 14 to move in the opposite direction, thereby promoting the driving shaft 3 to rotate in the opposite direction. The connecting rod assembly includes two connecting rod yokes 7, a pull rod 5 and a nut 6, one end of the two connecting rod yokes 7 is thr...

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Abstract

The invention provides an oxygen lance slag scraper. The oxygen lance slag scraper comprises a fixed frame which is symmetrically provided with a driving shaft and a driven shaft; the two ends of thedriving shaft are provided with a first connection rod and a second connection rod which rotate around the axis of the driving shaft; one end of the driven shaft is provided with a third connection rod which rotates around the axis of the driven shaft; the driving shaft is connected with a driving mechanism through the first connection rod, and the second connection rod is connected with the thirdconnection rod through a connection rod assembly; and the driving shaft and the driven shaft are each provided with a scraper blade assembly, and the two scraper blade assemblies are symmetrically distributed. According to the oxygen lance slag scraper, synchronous starting and stopping of the scraper blade assemblies can be achieved through a plane four-rod mechanism, connection rod operation isstable, the rigidity of the slag scraper is improved, the structural style of the slag scraper is optimized, and the service life of the slag scraper is prolonged; and meanwhile, by arranging a plurality of scraper blades, steel slag on the outer wall of an oxygen lance has a plurality of force bearing points, thus, the steel slag can be crushed more easily, and the slag scraping effect is improved.

Description

technical field [0001] The invention belongs to the technical field of steelmaking production equipment in the metallurgical industry, and in particular relates to an oxygen lance slag scraper. Background technique [0002] Oxygen lance is one of the key equipments in converter steelmaking. It is responsible for blowing oxygen into the molten pool in the converter during blowing and blowing nitrogen into the converter after blowing to protect the furnace lining by splashing slag. Oxygen lance will inevitably adhere to steel slag on the outer steel pipe of the oxygen lance during blowing and slag splashing to protect the furnace. The steel slag is getting thicker and thicker. In serious cases, the oxygen lance cannot be raised and lowered normally. If the operation is forced, the oxygen lance lifting motor will be burned or the steel wire rope will be broken. The cut oxygen lance needs to be replaced with a new oxygen lance, which greatly reduces the service life of the oxyg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/46
CPCC21C5/4606C21C5/4693Y02P10/20
Inventor 姚娟宋晓燕张文吴洋子
Owner WISDRI ENG & RES INC LTD
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