In modern industrial production, the requirements for continuous and accurate measurement and control of materials, substantial materials have increased, and loss in weight scales have been born. The loss in weight scale continuously and accurately measures the material according to the material weight change on the scale body. It gradually replaces the original belt scale, spiral scale, and even cumulative scale. The loss in weight scale has been widely used in metallurgy, mining, chemical, chemical fiber, and other industries as a brand-new measurement method. So how does a loss in weight scale work in industrial production?
Ⅰ. The working principle of loss in weight scale in industrial production
The loss in weight scale realizes measurement through controlling weight loss during work. First, the discharging device and weighing hopper are weighed. According to the weight loss per unit time, the actual feeding rate is compared with the set feeding rate to control the discharging device so that the real feeding rate always accurately conforms to the setting. Fixed value, in the short-time feeding process, the discharging device uses gravity to make the control signal stored during the working period work according to the volumetric principle.
Ⅱ. In which areas are loss in weight scales generally used?
It can be seen from the principle that the loss in weight scale is not affected by the mechanical changes of the scale body and the feeding mechanism. It only calculates the weight difference (differential weight). Compared with traditional dynamic measurement methods, its advantages are self-evident. When the control object is the flow rate (t/h, kg/min), the material can be transported well, and the measurement accuracy is high, the weight-loss method can be used as the best solution.
1. Weightless scale in chemical industry
Polymerization makes polyester in the chemical industry of various chemical raw materials, and it requires the precise proportioning of a variety of materials. The application of the loss in weight scale automates on-site production and reduces the labor burden. The real-time and continuous batching of multiple materials avoids the problem of material layering.
2. Cases in the fluorination industry
The hydrogen fluoride production process is the basis of the entire fluorine industry. Most of the industrial fluorine needs to be converted from hydrogen fluoride, and hydrogen fluoride is extracted from the chemical reaction of calcium fluoride and concentrated sulfuric acid. The price of calcium fluoride has risen steadily in recent years, so the industry urgently needs to reduce the consumption of materials per unit in production. High Dream Intellectualized Machinery co., ltd. has designed a special large-flow loss in weight scale to meet the strict requirements of this process.
3. Cases of loss in weight scale in metallurgical industry
In the hydro-zinc smelting process, powder additives such as antimony trioxide, polyacrylamide, etc., need to be added to the reactor. In order to remove some impurities in the zinc ore powder, since the reaction is continuously carried out, the addition of additives is also required. Time continuous. We design a series of loss in weight scales to feed additives to the reactor and design a buffer bin on the loss in weight scale to replenish the scale. The traditional way of manual weighing and feeding is changed so that the back-end reaction can be more uniform, and the purity of the finished product produced is higher.
4. Cases of loss in weight scale in rubber industry The polymerization makes engineering plastics and modified plastics in the plastics industry of various chemical raw materials, which require precise proportioning of multiple materials. The loss in weight scale solves the problem of material addition.