Variable-frequency ball press feeder capable of monitoring motor current in real time

Abstract

The invention is suitable for the technical field of ball presses, and provides a variable-frequency ball press feeder capable of monitoring motor current in real time. A radar level meter for detecting the material quantity in a feeding bin is arranged in the feeding bin, and an electromagnetic flow valve is arranged at a lower outlet of the feeding bin and used for detecting and controlling the material quantity of discharging; the radar level meter and the electromagnetic flow valve send data to a PLC, and the PLC adjusts frequency converters in motor sets according to the data and is used for conducting unified allocation control over double pressing rollers, a conveying belt and spiral conveying rods in the feeding bin; the frequency converters are used for replacing an original connection manner that a contactor and a relay are combined, in this manner, the frequency converters can monitor the operation current of the feeder and feed back the operation state of the feeder from the side face, and the PLC can uniformly adjust the operation speed of the feeder to be matched with the feeding amount of pressed balls according to the condition fed back by the frequency converters, so that even and effective material distribution and ball pressing can be achieved, and the service life of the feeder can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of briquetting machines, and in particular relates to a variable-frequency briquetting machine feeder for real-time monitoring of motor current. Background technique [0002] The feeders of existing domestic briquetting machines are all directly started by the public frequency of the AC contactor. There is a large mechanical impact at startup, a large current, and its running speed is uncontrollable, which cannot evenly and effectively distribute the briquetting balls. The internal material level of the feeder Feedback is given by the change of the material level pointer. If the material level pointer is insensitive due to hardening of material around it after long-term operation, the feedback is not timely, and a large amount of material accumulates inside the feeder. Usually, the feeder is overloaded and the feeding If the operating current of the feeder is too large, the rear relay triggers the action of ...

AI Technical Summary

Problems solved by technology

[0002] The feeders of existing domestic briquetting machines are all directly started by the public frequency of the AC contactor. There is a large mechanical impact at startup, a large current, and its running speed is uncontrollable, which cannot evenly and effectively distribute the briquetting balls. The internal material level of the feeder Feedback is given by the change of the material level pointer. If the material level pointer is insensitive due to hardening of material around it after long-term operation, the feedback is not timely, and a large amount of material accumulates inside the feeder. Usually, the feeder is overloaded and the feeding If the operating current of the feeder is too large, the rear relay triggers the action of the protection interlock contactor, and the feeder trips, so the interlocking briquetting machine trips due to the feeder overload fault

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