Weighing system having high precision quantification process

Abstract

The invention relates to a weighing system having high precision quantification process. The system includes a first feeding mechanism which controls feeding to an initially set weighing value, and a second feeding mechanism which controls feeding to an object set weighing value. The second feeding mechanism includes a spherical spool part which is arranged inside a second feeding channel and conducts radial self-rotation around the second feeding channel. The spherical spool part is provided with a recessed part for receiving a material on the spherical surface most distant from a self-rotating shaft. The weight of the material received in the recessed part is smaller than the error range of the set weighing value. According to the invention, the system realizes fine feeding by rotating the spherical spool part, and when the object set weighing value is arrived, the spherical spool part immediately stops the rotation, and the error of the set weighing value is smaller than the weight received by the recessed part, and the weighing value that is within the set error range is realized. The process weighing control system enables the precision of the weighing process to be easy to control and has a precision which reaches the requirement for high precision of national industries.

Description

technical field [0001] The invention relates to the field of material weighing control, in particular to a high-precision quantitative process weighing system. Background technique [0002] The weighing system used for production has gone through a long process from manual to semi-automatic, and then to fully automatic. In China, due to the limitation of economic development level and the control of enterprise costs, the proportion of fully automatic weighing control systems is still relatively small. , The intelligent process weighing control system is basically still in a blank state. [0003] At present, for materials with relatively good physical properties: such as liquids with low viscosity, uniform particles, non-viscous block or powder solids with good fluidity, their automatic process weighing control has reached a relatively mature level. The main weighing control process is as follows: the outer packaging container runs to the station and is positioned → the weig...

AI Technical Summary

Problems solved by technology

However, the repeatability of the feeding method of conventional screw feeding or fine feeding combined with the shut-off valve is not good enough, and it is easy to cause a certain proportion of the weighing value to exceed the control range; if we can control the accuracy within 2‰, and ensure that all weighing If the values ​​are within this range, it has reached the high-precision requirements of the domestic industry, but the existing process weighing control system cannot meet this standard.

Images