Device for unblocking and blocking air holes of side-blown furnace

Abstract

The invention provides a device for unblocking and blocking air holes of a side-blown furnace, and relates to the technical field of metal melting. The device for unblocking and blocking the air holesof the side-blown furnace provided by the invention comprises a support frame assembly, a blocking mechanism and a lifting assembly, wherein the support frame assembly is used for being installed onan air hole structure; in addition, the support frame assembly is provided with a guide passage communicating with the air holes; the blocking mechanism is rotationally connected with the support frame assembly; one end of the lifting assembly is connected with the blocking mechanism, and the other end is used for being connected with a side-blown furnace support cross beam; and the lifting assembly is used for driving the bocking mechanism to swing relative to the support frame assembly so that the blocking mechanism downwards swings to penetrate through the guide passage for blocking the airholes, or the blocking mechanism upwards swings to be staggered away from the guide passage. The device for unblocking and blocking the air holes of the side-blown furnace provided by the invention has the advantages that an overhaul platform can be vacated; in the non-use state, the overhaul platform is enabled to have a sufficient operation space; the bypass function of the device is realized;and the problem that the equipment does not have an installing space since the air holes of the side-blown furnace are densely distributed is solved.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a device for opening and blocking wind holes of a side-blown furnace. Background technique [0002] The side-blowing furnace has been widely used in metal smelting fields such as copper, nickel, lead, and tin. There are multiple primary air holes evenly and densely arranged on both sides of the side-blowing furnace (the distance between the holes is generally about 400mm), and the oxygen-enriched air enters through the holes. Participate in the melting reaction in the furnace. During the production process, it is necessary to frequently perform operations such as poking and unblocking the primary wind eye. [0003] There are mainly two situations for the wind hole unblocking operation of the side blowing furnace: [0004] 1) When the process is in normal production, according to the situation in the furnace, it needs to be adjusted to open or block a certain air hole. U...

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Problems solved by technology

[0005] 2) When the process is abnormal or overhauled, it is necessary to quickly block all the wind holes within tens of seconds. If the blockage is not timely, it will cause accidents such as melt backflow

[0007] Among the existing patents, the invention patent with the application number CN201820302445.9 discloses a device for cleaning the primary tuyere of the side blowing furnace. The function of the eye is not practically implementable

To realize the function of opening and blocking the wind eye, it is necessary to install a set of this device in front of each wind eye, but the space in front of the side blowing furnace is limited, and the distance between the air eyes is very close, generally less than 400mm, this device can only be installed in front of the furnace for inspection and maintenance On the platform, on the one hand, there may be no installation space, on the other hand, even if the installation is completed, dozens of sets of equipment will completely occupy the operating platform in front of the furnace, making it impossible to perform other operations and maintenance on the furnace body

In addition, after the tuyere is blocked, the drill rod in the device will be adhered to the tuyere by the melt, and the drill rod cannot be pulled out simply by the force of the cylinder, and the furnace body will be damaged if the pulling force is too large

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