Sintering machine air box air volume adjusting valve

Abstract

The invention discloses a sintering machine air box air volume adjusting valve which comprises a valve body; one side of the valve body is provided with a protruding cavity which is led outward; the protruding cavity is internally provided with a rotary shaft which is staggered with a path of the valve body and a valve plate installed on the rotary shaft; and the valve plate is close to one side of the protruding cavity when being opened, so that the path of the valve body is in an all-open state, and the leading-out end on one side of the rotary shaft is connected with a power device througha crank connecting rod to be used for controlling opening and closing of the valve plate. Therefore, for the adjusting valve with an improved design, the rotary shaft is arranged on one side of the valve body to avoid the position of the path and cannot block foreign matters; and in addition, the valve plate is close to one side of the protruding cavity, namely the outer side of the path, when being opened, so that the path of the valve body is in the all-open state, an obstacle when the valve plate is opened is eliminated, the phenomenon that the valve plate is scoured by a material is reduced, and the service life of the valve plate is greatly prolonged.

Description

technical field [0001] The invention relates to a regulating valve, in particular to an air volume regulating valve of a sintering machine bellows. Background technique [0002] Based on the ideal method of reasonably distributing the air volume of bellows under the negative pressure of the bellows of the sintering trolley and the sintering system adopted, each bellows of the sintering trolley must be equipped with a valve and a negative pressure detection device. By adjusting the valve opening of the bellows on the sintering machine, The negative pressure from both ends of the sintering trolley to each wind box in the middle is gradually increased. Without lowering the sintering vertical sintering speed or reducing the vertical sintering speed, the sintering machine can achieve high-efficiency sintering with low negative pressure and small air volume, improve the quality of sintered ore, reduce the energy consumption of the sintering process, reduce the air leakage rate and...

AI Technical Summary

Problems solved by technology

Regardless of whether the butterfly valve is opened or closed, there will be a valve plate at the position of the diameter, resulting in poor passability, and the valve plate will accumulate debris when it is stationary for a long time, and the debris will form permanent accumulation after long-term accumulation and hardening of the valve plate. Stuck rotation reset failure

Moreover, if there is a large foreign matter in the bellows, such as a sintering trolley grate, etc., it is easy to be blocked by the valve plate shaft and cause the failure of the regulating valve.

[0004] 2. Since the valve plate shaft of the traditional air volume regulating valve is installed on the bearing, the shaft hole must be sealed. If the shaft hole is not well sealed, this will cause air leakage at the shaft hole of the valve body, and the rotating bearing will leak air for a long time. As a result, the mixed dust accumulates on the bearing and forms a compaction, which makes the bearing jammed and fails, and the valve plate cannot be opened or closed normally.

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