Liquid material accurate weighing device, liquid supply system and concrete stirring station

Abstract

The invention discloses a liquid material accurate weighing device, a liquid supply system and a concrete stirring station. On the one hand, as the inner diameter of a second liquid outlet pipe is smaller than that of a first liquid outlet pipe, the first liquid outlet pipe can be firstly used for carrying out rough weighing and rapid liquid supply on a liquid storage weighing hopper. When the weight or volume of the liquid in the liquid storage weighing hopper reaches a preset value, the second liquid outlet pipe is used for carrying out accurate weighing and slow supply on the liquid storage weighing hopper until the needed value is reached. The phenomenon that as the inner diameter of the first liquid outlet pipe is large, the flow speed of the liquid is high, timely control is difficult, and the liquid material flowing into the liquid storage weighing hopper exceeds the needed value is avoided, and the accuracy of liquid supply is further improved. On the other hand, in the accurate weighing stage, slow liquid material supply is carried out on the liquid storage weighing hopper through the liquid material left in a liquid inlet pipe and a tee joint pipe fitting. At that time, the liquid inlet pipe and the tee joint pipe fitting are equivalent to a liquid material storage unit. The liquid inlet pipe and the tee joint pipe fitting can be manufactured independently or adopt standard pipelines and pipe fittings, and the cost is lowered.

Description

technical field [0001] The invention relates to the technical field of concrete mixing equipment, in particular to a precision weighing device for liquid material, a liquid supply system and a concrete mixing station. Background technique [0002] Liquid material weighing is an indispensable link in the liquid supply system, and the accuracy of weighing is very high in many fields. Taking the liquid material supply of a concrete batching plant as an example, the amount of admixture needed to accurately measure and mix concrete affects the quality and production efficiency of the product. [0003] As shown in the application number 201320523434.0, most of the precision weighing devices in the prior art include a precision weighing box, a liquid inlet pipeline connected to the precision weighing box for delivering admixture to the precision weighing box, and an opening on the top of the precision weighing box. The main liquid outlet and the main liquid outlet pipeline and the...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a precision weighing device for liquid materials, a liquid supply system and a concrete mixing station to solve the problems of low precision, complex structure and high manufacturing cost of the precision weighing device

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