The speed control scale automatically quantitatively adds two or more materials in a certain weight ratio to the mixing batching tank. The weight of the passing materials is detected through the hopper scale to determine the weight of the material in the hopper; the digital speed sensor installed at the tail continuously measures the running speed of the Feeder. The pulse output of this speed sensor is proportional to the speed of the feeder; the speed signal and the weight signal are sent to the feeder controller, which is processed by the microprocessor in the controller to generate and display the cumulative quantity / instantaneous flow rate. This flow rate is compared with the set flow rate, and the controller outputs a signal to control the frequency converter, thereby achieving the requirement of quantitative feeding.

The spiral Electronic scale places the electrically-driven spiral feeding mechanical equipment (commonly known as the auger motor) between the hopper and the hopper, and realizes the dynamic quantitative weighing of powder and granular materials through the electronic control device. When the auger motor is started, the powder and granular materials in the hopper will follow the rotation of the spiral feeding mechanism and enter the hopper. Three strain-type Weighing modules are installed between the hopper and the weighing frame, and the weight of the hopper is directly converted into an electrical signal by the weighing sensor group and sent to the electronic control device. When the set weight value is reached, the auger motor is turned off to stop feeding, and the hopper door is opened to unload, completing a dynamic feeding and quantitative weighing process.

The spiral Weighing system mainly consists of a drive motor, a screw, a mixer, a storage hopper, and a barrel. The feed inlet of the barrel is connected to the storage hopper. The screw is composed of a shaft and a screw blade, and the screw blades are mostly made by stamping steel plates and welded to the shaft. The mixer is located inside the storage hopper and rotates together with the screw. During the operation, the drive motor drives the shaft to rotate, and the powder in the storage hopper is evenly mixed by the mixer and enters the barrel through the feed inlet. Under the push of the screw blades, it is sent out from the outlet of the barrel. The spiral feeding device uses the volume of the screw's helical groove to measure the material, and precisely controls the volume of the supplied powder by precisely controlling the rotation speed of the shaft or the rotation time. The screw shaft of the spiral conveying device can be horizontally, inclined or vertically arranged.

The electronic scale controls the output of the spiral quantitative feeder. The valve core is pushed by the piston in the cylinder, and the double-acting cylinder is controlled by an electric two-position five-way solenoid valve to push compressed air to move the piston. The piston connecting rod is connected to the valve core of the feeding valve to open or close the feeding valve. The speed of opening or closing the feeding valve is adjusted by the exhaust regulating valve on the air discharge pipe of the solenoid valve. The feed inlet of the spiral quantitative feeder is equipped with a homogenizer transmission shaft with a broken block. The broken block's stirring action mixes the powder into uniformly granular powder. The homogenizer is driven by a constant-speed turbine motor. The screw of the spiral quantitative feeder is driven by an electric motor with a reduction gear, and the feeding amount is adjusted by the drive motor's speed, which is controlled by a frequency converter with a frequency range of 5 to 100 Hz to change the quantitative feeding capacity of the spiral quantitative feeder and ensure the accuracy of powder dosage.