Special tool for dismounting blast-furnace tuyere and using method of special tool

Abstract

The invention relates to a special tool for dismounting a blast-furnace tuyere and a using method of the special tool. The special tool comprises a handle, a guide rod, a supporting frame and a tensioning device, wherein the guide rod is in threaded connection with the handle; the upper part of the guide rod is connected with the tensioning device; the lower part of the guide rod is connected withthe supporting frame; the tensioning device comprises a movable base and tensioning rods; the movable base is in threaded connection with the guide rod; and the tensioning rods are uniformly distributed at the periphery of the movable base. The special tool has the advantages that: the integral structure is simple, operations are convenient, the tool directly penetrates into the tuyere, the tensioning device tensions and supports a small sleeve of the tuyere by rotating the guide rod, the handle is rotated to drive the guide rod to move, and the small sleeve of the tuyere is taken out; a threaded connecting way is adopted, so that the whole dismounting process does not have an eccentric and breakage phenomenon; and moreover, the supporting frame supports on a middle sleeve of the tuyere and a big sleeve of the tuyere, so that the guide rod can be stably supported in the whole dismounting process, and therefore, production efficiency is improved, and labor intensity of a furnace man isreduced.

Description

technical field [0001] The invention belongs to blast furnace ironmaking auxiliary equipment, in particular to a special tool for unloading blast furnace tuyeres and a usage method. Background technique [0002] The blast furnace tuyere is a key component to ensure the normal production of the blast furnace, and is a key process part on the blast furnace of the ironworks in the iron and steel production. The blast furnace tuyere usually includes a large tuyere set, a middle tuyere set (also known as the second tuyere set) and a small tuyere set (also called the third tuyere set), in which the large tuyere set is connected to the furnace skin and covers the middle set, and the middle set Live in a small set. As the blast furnace tuyere sleeve is a component used to transport hot air into the blast furnace, it needs to withstand a high temperature of more than 1500°C during the process of conveying hot air, and it also needs to withstand the scour of high-temperature iron flo...

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Problems solved by technology

[0004] Patent application number: 200920069687.9, which discloses a portable tuyere quick disassembly device, which uses the hook head to drag the tuyere, and uses the impact force to carry out the construction. It cannot take out the tuyere stably, and it is easy to cause damage to the tuyere. It needs to be cleaned up later. very convenient

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