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Double-layer flap valve blanking system

A flap valve, double-layer technology, applied in the direction of the lift valve, valve details, valve device, etc., can solve the problems of general sealing effect, easy wear of the flap, large gas consumption, etc., to reduce the maintenance workload and achieve good sealing effect , Improve the effect of gas recovery

Inactive Publication Date: 2017-10-20
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-temperature flue gas generated in the steelmaking process will escape from the feeding pipeline, and the flames will ignite the auxiliary raw materials and even burn the equipment in the silo, especially the large amount of gas in the high-temperature flue gas will seriously affect the safety of production
[0003] At present, nitrogen sealing is generally used in steelmaking plants. This method requires nitrogen sealing throughout the process, which consumes a lot of gas, costs high, and the sealing effect is average, which also affects the gas recovery effect.
If a double-layer hammer flap valve is used, the flap is easy to wear, has poor reliability and poor sealing effect

Method used

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  • Double-layer flap valve blanking system
  • Double-layer flap valve blanking system
  • Double-layer flap valve blanking system

Examples

Experimental program
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Effect test

Embodiment

[0019] Example: such as figure 1 , 2 As shown, during the feeding process of the double-layer flap valve feeding system, the double-layer flap (2) is closed and opened, and the cut-off valves (9), (10), and (11) control the gas inflow. Combining the three modes of blowing blanking, blowing without blanking, and non-blowing in the steelmaking process, the cut-off valves (9), (10), (11) switches and double-layer flaps (2) are turned over by PLC control to realize A sealing method that matches the three patterns. to combine image 3 The PLC control flow chart of the double-layer flap valve feeding system illustrates the working process of the three modes.

[0020] In the stage of blowing and unloading, the system sends out a blanking signal, the PLC controls the opening of the shut-off valve (9), the shut-off valve (10) is closed, the shut-off valve (11) is closed, and the double-layer flap (2) is opened. After a delay of several seconds The purpose is to ensure that the mate...

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Abstract

The invention relates to the field of metallurgical feeding system feed openings, and specially provides a double-layer flap valve blanking system. A novel double-layer flap valve device comprises a blanking hose pipe (1), double layers of turning plates (2), a cylinder (3), a lever (4) and air holes (5) which are uniformly distributed in the periphery of the central part of the hose pipe. A PLC controls the cylinder to turn over the turning plates, and controls gas flowing into trip valves (9), (10), (11), and a combination mode of gas and the double layers of turning plates is employed for seal to prevent high temperature flue gas from going upwards. The double-layer flap valve blanking system is compact in structure and good in seal performance, and is safe and reliable.

Description

technical field [0001] The invention relates to the field of a feeding port of a metallurgical feeding system, in particular to a double-layer flap valve feeding system. Background technique [0002] The converter feeding system is a system that completes the feeding function in the steelmaking process, and is the main component of the converter steelmaking. During the feeding process, auxiliary raw materials such as sinter, metallurgical lime, slag reducing agent and dolomite need to be continuously added to the converter according to the steelmaking situation. The high-temperature flue gas generated during the steelmaking process will escape from the feeding pipeline, and the flames that escape will ignite the auxiliary materials and even burn the equipment in the silo, especially the large amount of gas in the high-temperature flue gas will seriously affect the safety of production. [0003] At present, nitrogen sealing is generally used in steelmaking plants. This metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/18F16K1/44F16K31/163C21C5/46
CPCF16K1/18C21C5/466F16K1/44F16K31/1635
Inventor 黄光永谢国进谌炎辉申其芳
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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