Star-shaped discharge valve with safe operation monitoring device

Abstract

The invention discloses a star-shaped discharge valve with a safe operation monitoring device, and relates to the technical field of blast furnace equipment manufacturing. The star-shaped discharge valve comprises a valve body, a front end cover and a rear end cover, a main shaft and an impeller are arranged in the valve body, the impeller is provided with two end plates sleeved on the main shaft,and a blade is arranged between the two end plates; one end of the main shaft penetrates through the front end cover to be connected with a driving device, the other end of the main shaft is arrangedon the rear end cover through a bearing seat; and a plurality of monitoring bosses are arranged on the end plate close to the rear end cover along the circumference, a proximity switch is arranged atthe position, corresponding to any monitoring boss, of the rear end cover, the signal output end of the proximity switch is connected with the signal input end of a speed monitor, the signal output end of the speed monitor is connected with the signal input end of a PLC control module, and the PLC control module is connected with a corresponding interface of a computer. Compared with the prior art, the working condition of the star-shaped discharge valve can be visually monitored and judged according to numerical values displayed by a computer, problems are found and handled in time, and thestability of safety production is guaranteed.

Description

technical field [0001] The invention relates to the technical field of blast furnace equipment manufacturing, in particular to a star discharge valve with a safety operation monitoring device for a blast furnace coal injection pulverization system. Background technique [0002] In industries such as metallurgy, the main function of the star discharge valve of the blast furnace coal injection pulverization system is to discharge the coal powder in the bag box and send it to the next device continuously and evenly. The star unloading valve currently used in the metallurgical industry includes a valve body, a front end cover connected to the valve body, and a rear end cover. The valve body is equipped with a main shaft and an impeller fixed on the main shaft. One end of the main shaft passes through the front end cover to connect the drive. device, and the other end is installed on the rear end cover through the bearing seat. Since there is no monitoring device designed for th...

AI Technical Summary

Problems solved by technology

Since there is no monitoring device designed for the operation of the impeller, it is difficult to find out and deal with it in time if the drive device, impeller, spindle and other components fail to work normally during the working process of the star discharge valve.

However, if the star discharge valve does not work normally, it will cause coal accumulation in the bag box. After coal accumulation, the temperature will rise and burn easily, causing the bag box to burn and even explode, seriously affecting the stability of safe production.

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