High-precision powder material batching system for concrete mixing station and batching method of high-precision powder material batching system

Abstract

The invention relates to the field of concrete stirring equipment, and particularly to a high-precision powder material batching system for a concrete mixing station and a batching method of the high-precision powder material batching system. The high-precision powder material batching system is characterized by comprising an overshoot balancing mechanism, telescopic batchers and elastic connectors, wherein the overshoot balancing mechanism comprises an overshoot hopper, an overshoot driving mechanism and an overshoot feeding mechanism; the overshoot driving mechanism can drive the overshoot hopper to move below a discharge port of a feeding conveyor; and the telescopic batchers and the elastic connectors are arranged between a material bin and a rack. According to the high-precision powder material batching system for the concrete mixing station, the weighing precision can be up to 0.1-0.2%; the elastic connectors are separated from the rack during weighing, so that the environmentalinterference of the telescopic batchers is reduced; during vibration discharging, the telescopic batchers are separated from the material bin, so that the influence of the vibration on the service life of pressure sensors is reduced; and positioning mechanisms can position and correct the elastic connectors so that the reduction of the batching precision caused by the friction of the material binand the rack can be avoided.

Description

technical field [0001] The invention relates to the field of concrete mixing equipment, in particular to a high-precision powder batching system and a batching method for a concrete mixing station. Background technique [0002] The powder batching system of the concrete mixing plant is composed of a screw conveyor, a powder weighing scale, a feeding butterfly valve and a dust collection device. When the batching starts, the screw conveyor gets a signal to start, and conveys the powder to the hopper of the powder weighing scale. At this time, a part of the air and dust in the hopper reaches the dust collecting device through the exhaust pipe. When the weight of the powder reaches the preset weight value, the screw conveyor stops conveying the powder to complete the batching. When the feeding butterfly valve receives the feeding instruction, it starts to act and opens the door to feed. At the same time, the vibrator starts to vibrate to speed up the feeding speed; after the ...

AI Technical Summary

Problems solved by technology

Generally, when the powder batching system of the mixing station is working, the feeding flow rate of the screw conveyor in the feeding link is unstable. At the same time, when the feeder stops, there will be a certain amount of powder overshoot due to inertia, resulting in insufficient powder feeding in the weighing scale bucket. Accuracy reduces the batching accuracy, which shows that the feeding accuracy is not high. In addition, the measurement of the sensor is affected when the vibrator is working, and the long-term vibration will reduce the service life of the sensor. The error of the existing powder batching is between 1.5-3%. , the accuracy needs to be improved, in view of this, the case arises

Images