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Furnace top feeding device of semi-closed submerged arc furnace

A technology of feeding device and submerged arc furnace, which is applied to furnaces, furnace components, lighting and heating equipment, etc., can solve problems such as overflow, easy wear and leakage of material pipes, and damage, achieve continuous material quantity detection, avoid furnace shutdown, reduce The effect of small shocks

Active Publication Date: 2014-06-25
DALIAN HUARUI HEAVY IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This feeding device has the following problems in production: (1) The material pipe is easy to wear and leak
If the seal of the material tube is broken, high-temperature smoke or even high-temperature poisonous gas is likely to overflow from the seal, causing more serious damage

Method used

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  • Furnace top feeding device of semi-closed submerged arc furnace

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with drawings and embodiments. It is implemented as a 2×30MW multi-circuit DC manganese-silicon alloy electric furnace top charging device. Furnace top charging device, including weighing bin 2, finger valve 3, hydraulic flapper valve 4, herringbone feeding pipe 8, inclined feeding pipe 9 and feeding nozzle 10, weighing bin 2 is fixedly connected to weighing bin On the floor 1, there is a flange on the upper opening of the weighing bin 2, and a load cell is set under the upper flange of the weighing bin 2, and the weighing sensor is supported under the upper flange of the weighing bin 2 and connected to the weighing material. Between the warehouse floors 1, the lower port of the weighing bin 2 is sequentially connected with the finger valve 3 and the hydraulic slide valve 4; the herringbone material pipe 8 is composed of a vertical pipe and an inclined pipe located in the middle of the vertical pipe. ...

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Abstract

A furnace top feeding device of a semi-closed submerged arc furnace comprises a weighing stock bin, a finger valve, a hydraulic gate valve, a herringbone feed tube, an inclined feed tube and a feed nozzle. The weighing stock bin is fixed to a weighing stock bin floor, a lower opening of the weighing stock bin is connected with the finger valve and the hydraulic gate valve, the herringbone feed tube is fixed to a feed tube mounting floor, an upper end opening of the herringbone feed tube is connected with a discharging pipe of the hydraulic gate valve, an upper end opening of the inclined feed tube is communicated with the a lower end opening of the herringbone feed tube, a lower end opening of the inclined feed tube is communicated with the feed nozzle, a pneumatic flap valve is arranged on the inclined feed tube, and the pneumatic flap valve is in interlocking and interaction with the hydraulic gate valve. The device has the advantages that weight changes of materials can be monitored by the weighing stock bin in real time, detection is continuous, safe and reliable, the weighing precision is reliable, quantitative feeding is achieved, the inclined feed tube is sealed by the materials, the impact of the materials to the inclined feed tube is small, the service life of the inclined feed tube is prolonged, the occupied space of the pneumatic flap valve is small, and the original arrangement of the factory is not affected.

Description

technical field [0001] The invention belongs to the technical field of metallurgical equipment, in particular to a semi-closed submerged arc furnace top charging device for intermittent feeding. Background technique [0002] The semi-closed submerged arc furnace is a production mode of intermittent feeding. The conventional furnace top charging device is composed of a silo, a finger valve, a hydraulic slide valve, a straight feeding pipe, an inclined feeding pipe and a feeding nozzle, etc. This feeding device has the following problems in production: (1) the material pipe is easy to wear and leak. When the hydraulic slide valve at the bottom of the silo is opened, the material directly rushes from the high-level silo through the material tube into the furnace under the action of gravity. The material drop is more than ten meters, and the high-speed material flow causes great wear and impact on the material tube. Generally, it does not exceed half a year, and some even leak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D3/10
Inventor 王景涛李海峰刘雪林陈秀实韩再学贾锋
Owner DALIAN HUARUI HEAVY IND GRP CO LTD
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