What are the structures of weightlessness scales? Briefly describe the working principle of weightlessness scale
Those engaged in the industrial field know that the structure of a weightlessness scale is composed of a weighing hopper, a frame, a mixer, a feed gate, a discharge device, a weighing sensor, and a measurement control device. They also know what the working principle of a weightlessness scale is Today, the editor will briefly talk about the knowledge of how the weightlessness scale works. The weightlessness scale realizes measurement through the principle of controlling weight loss during work. Firstly, 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, so as to control the discharging device so that the actual 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. During the weighing process, the weight of the material in the weighing hopper is converted into an electric signal by the load cell and sent to the weighing instrument. The weighing instrument compares and judges the calculated material weight with the preset upper and lower weight limits. The feed gate is controlled by PLC to feed the weighing hopper intermittently. At the same time, the weighing instrument compares the calculated actual feeding rate (discharge flow rate) with the preset feeding rate, and uses PID adjustment to control the discharging device so that the actual feeding rate accurately tracks the set value . When the feed gate is opened to feed the weighing hopper, the control signal locks the feed rate and performs volumetric discharge. The weighing instrument displays the actual feed rate and the cumulative weight of the discharged material. Weightlessness scales are also known as weight-reducing weighing scales or weight-reducing scales. It is mainly composed of five parts: a closed feeding vibrator, a closed unloading vibrator, a tensile sensor, a metering bin and a microcomputer control system. The feeding vibrator is the metering bin for feeding, and the unloading vibrator is the metering bin for discharging. The unloading vibrating machine and the measuring bin are loaded by 3 tension sensors. The three of them are the measurement part of the system. This type of scale is used for continuous measurement of solid materials. Several of these scales are combined to form a batching metering device. Through the above reading, we know how the weightlessness scale works, as well as the structure and composition of the weightlessness scale. If you want to know more about weightlessness scales, please pay attention to Guangdong kenweigh manufacturers.