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Blast furnace tap hole apparatus

A technology for opening iron holes and blast furnaces, which is applied to blast furnaces, blast furnace details, and blast furnace parts. It can solve problems such as easy breakage of threaded parts, many connecting parts, and poor sealing, so as to improve service life and reduce assembly parts and connections. The effect of avoiding the breakage of the weak link

Active Publication Date: 2014-08-13
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims at the problem that there are too many connecting parts and the seal is not tight in the prior art, and the thread part is easy to break under the impact of the tapping machine operation, and provides a blast furnace tapping device

Method used

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Embodiment Construction

[0020] The blast furnace taphole device of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 , figure 2 The blast furnace tap opening device shown includes a drill pipe 12, a connecting sleeve 2, and a drill tail 1 connected in sequence; Connected by thread 10, there is a sealing sleeve 16 between the connecting sleeve 2 and the shank 1, wherein the connecting sleeve 2, the sealing sleeve 16 and the shank 1 are integrated; the sealing sleeve 16 is provided with an air inlet 3 and a water inlet 4. The air inlet hole 3 and the water inlet hole 4 are symmetrically arranged relative to the center line of the through hole 9. The air inlet hole 3, the water inlet hole 4 and the through hole 9 are connected in a Y shape. There is a blind hole 6 between them, and the blind hole 6 communicates with the air inlet hole 3, the water inlet hole 4, and the through hole 9; the sealing sleeve 16 is provi...

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Abstract

The invention provides a blast furnace tap hole apparatus. The apparatus comprises a drilling rod, a connecting sleeve and a bit shank which are sequentially connected; the drilling rod has a through hole, a drill bit is welded to one end of the drilling rod, the other end of the drilling rod has a threaded connection with the connecting sleeve, a sealing sleeve is arranged between the connecting sleeve and the bit shank, and the connecting sleeve, the sealing sleeve and the bit shank form one body; the sealing sleeve is provided with a wind inlet and a water inlet, and the wind inlet and the water inlet are connected with the through hole respectively; and one end of the bit shank far from the sealing sleeve is provided with a stern notch, the middle portion of the bit shank is provided with a spline, and the spline and the bit shank form one body. The bit shank, the connecting sleeve and the sealing sleeve are designed to form one body, so the assembling part and the connecting portion are reduced, and the fracture of the weak link of a fitting connection is avoided; and the tail end of the bit shank is provided with the impact stern notch, so when an opening machine impacter impacts, an impact tail portion is difficult to impact and damage, and the service life of a connecting mechanism is prolonged.

Description

technical field [0001] The invention relates to the technical field of metallurgical blast furnace ironmaking, in particular to a blast furnace tap opening device. Background technique [0002] At present, the device connection mechanism used by domestic iron and steel smelting enterprises for blast furnace tapholes is to use drill bits, drill pipes, connecting sleeves, shank tails and other components to connect with each other, and finally to connect with the impactor of the tapping machine. When the rock drill shank is working, its The end face of the tail directly bears the impact contact of the piston of the rock drilling machine, and transmits the impact energy of the piston movement from the tail end of the shank to the drill rod and bit, thereby performing rock drilling operations. At the same time, the spline of the shank part transmits the torque driven by the rotating sleeve of the rock drill to make the entire drilling system rotate. The drill tail is constr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/12
Inventor 李宗白梁友乾强发吉李永兵马进吉鸿安
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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