Powder material weighing method and weighing device

Abstract

The invention discloses a powder material weighing method and a weighing device. The powder material weighing method comprises a step of conveying the powder from a material bin to a measuring and weighing container for being weighed, and in the weighing step, excess powder in the measuring and weighing container is automatically taken out from the measuring and weighing container. The weighing device comprises a powder storage unit, a powder measuring and weighing unit, a control and data processing unit and an automatic taking out unit, wherein the powder measuring and weighing unit comprises the measuring and weighing container arranged on a rack and a weighing instrument for weighing the powder in the measuring and weighing container; the weighing instrument is electrically connected with the control and data processing unit; the automatic taking out unit is used for automatically taking out the excess powder in the measuring and weighing container from the measuring and weighing container; and the automatic taking out unit is electrically connected with the control and data processing unit. The excess powder material can be automatically taken out accurately, the working efficiency is improved, and the production operation is ensured to be continuous and stable.

Description

technical field [0001] The invention relates to a method for weighing solid-phase powder materials and a weighing device used, and belongs to the technical field of measurement and detection. Background technique [0002] In the field of modern industrial production, some fields, such as textile printing and dyeing, have an inseparable relationship with weighing, especially powdery materials, with their unique raw materials, products and production methods. [0003] Powder materials have flow properties, and flowability is affected by moisture. Generally, when the moisture content of the powder increases, the fluidity becomes poor, which is manifested in the fact that the powder tends to cohere and has greater adhesion. The greater the moisture, the stronger the adhesion, and the worse the fluidity, resulting in the overall fluidity of the powder material. Not evenly. Moreover, the longer the storage time of the powder material, the easier it is for the powder material to ...

AI Technical Summary

Problems solved by technology

[0005] However, due to the non-uniformity of the flow of the above-mentioned powder materials, and even the agglomeration of the powder materials, the opening of the regulating valve, the rotating speed of the screw reamer and the discharge amount are nonlinear, so it is difficult to achieve accurate and controllable quantitative weighing and discharging. material, often resulting in excessive powdery material in the weighing container

Existing technology has to rely on manual removal of excess powder materials

Some powder materials will emit into the air. They are toxic, flammable, highly corrosive, and highly dusty. They are extremely unsuitable for workers to contact. Long-term inhalation and contact may easily lead to chronic poisoning and serious illness of workers, which seriously endanger the health of workers; for For flammable powder, the staff must also wear anti-static work clothes, and discharge the static electricity of the human body before operation. The entire operation of retrieving excess powder must comply with the operating procedures, which is cumbersome and complicated, and a little negligence will pose a safety hazard

In addition, manual removal of excess powder has different operators, and the amount of powder retrieved is also different. With the uncertainty of the operator's subjective operation, the process of retrieval and weighing often needs to be repeated many times. Low efficiency seriously affects the continuity of industrial production

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