Coal valve opening and closing position indicating device

Abstract

The invention relates to a coal valve opening and closing position indicating device. A connecting plate and a gear box holder are fixed on a bearing retaining cap of a coal valve; an input shaft is fixedly connected to a gear shaft of the coal valve; a pinion is fixedly connected to the input shaft, and is meshed with a main gear; the main gear is fixedly connected to an output shaft; the front end of the output shaft is movably connected to a gear box cover through a copper bearing and a bearing, and the back end of the output shaft is movably connected with the gear box holder; the output shaft extending out of the gear box cover is fixedly connected with a pointer; and an indicator plate is fixedly connected to the gear box cover. The coal valve opening and closing position indicating device is arranged on an end cover of the gear shaft of the coal valve at an inlet / outlet of a coal feeder, and is connected with the gear shaft of the coal valve, the pointer swings on the indicator plate together with the rotation of the output shaft and indicates conditions intuitively and clearly, and the running conditions of the coal valve can be accurately reflected through an indicating area of the pointer. The coal valve opening and closing position indicating device has the characteristics of simple structure and the like.

Description

Technical field [0001] The invention relates to an on-off valve position indicating device used for a coal valve in auxiliary equipment of a coal feeder. Background technique [0002] Coal feeders are widely used in coal milling and pulverizing systems of thermal power generating units. The raw coal conveyed by the coal feeder is fed from the raw coal bunker through the coal feeder's upper and lower coal pipes and coal gates to the main conveying belt of the coal feeder, and then conveyed to the coal mill by the conveying belt through the falling coal pipeline and coal gate. Import, complete the entire transportation process of raw coal. In order to ensure the normal operation and maintenance of the unit, it is required that the pipe between the outlet of the original coal bunker and the inlet of the coal feeder, and the pipeline between the outlet of the coal feeder and the inlet of the coal pulverizer must be equipped with a coal valve to control the switch of the coal flow, s...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, the degree of the switch of the coal valve cannot be directly observed by vision

There are often situations where the gate valve switch in the coal valve is not in place, which brings a lot of inconvenience to the operation and maintenance of the equipment

How to accurately and easily observe the status of the gate valve switch in place, and prevent hot air from being strung up due to the coal valve switch not being in place, raw coal is easy to accumulate at the coal falling pipeline and the entrance, and the feeding amount is unstable.

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