The track-type electronic scale first installs the weighing device on the track, which is located below the discharge area and 4 meters away from the small vehicle track. Four sections are cut off in sequence according to the wheel spacing of the small vehicle, and the weighing modules are installed respectively. Then, the excitation and signal lines of the four sensors are connected to the dedicated wiring box, and the weight signal is sent to the desktop instrument in the operator's room via a wireless transmitting device for display, thereby facilitating the operator to control and calculate the amount of coal slime mixed in the combustion.

The weight of the materials inside the screw hopper scale is converted into an electrical signal by the weighing module and transmitted to the weighing instrument. The weighing instrument compares and distinguishes the calculated material weight with the preset upper and lower limit values of weight, and controls the feeding gate through PLC to intermittently feed materials into the weighing hopper. At the same time, the weighing instrument compares the actual feeding rate (discharge flow rate) calculated by itself with the preset feeding rate, and uses PID regulation to control the discharge device, so that the actual feeding rate accurately follows the set value. When the feeding gate is opened to feed materials into the weighing hopper, the control signal locks the feeding rate and performs volumetric discharge. The weighing instrument displays the actual feeding rate and the cumulative weight of the discharged materials.

Hopper scales are used for weighing product streams for packaging, dosing, dispensing and yield monitoring in batches. The unit consists of a hopper, weighing cell and weighing instrument. It is an ideal automatic weighing device for the modernization of bulk materials, mainly divided into totalizing hopper scales and loss-in-weight feeding scales.

Aviation baggage scales in the original basis to adapt to the modernization of airport management measurement and management needs and improve the development of a new generation of products. With rapid and accurate weighing, rich and complete performance, easy to use and simple, aviation baggage scales are widely used in airports for passenger baggage measurement, management and loading and other needs.

The microcomputer hopper scale is displayed through the human-machine interface touch screen. The operator can directly see the material quantity in the silo from the driver's cab. Meanwhile, the touch screen is equipped with manual and automatic receiving and loading operation modes, and the signals of each material level participate in interlocking. The high material level is the upper limit for receiving materials. After the PLC receives the high material level signal, it automatically controls the electro-hydraulic push rod to close the hopper leak and controls the solenoid valve to stop the hopper from vibrating materials.

The Material tank mixing system mainly realizes the automatic control of the whole system through the electronic scale, which mainly completes the functions of automatic feeding, discharging, transporting, mixing and stirring of materials. It adopts the centralized control method of industrial control machine dosage, which consists of a host and several slaves connected through the network, and the host will give the control task to each slave to complete.

The purpose of the hopper scale is to measure and discharge metal powder. The hopper scale barrel is divided into two parts, the upper part is cylindrical and the lower part is conical. The hopper scale is installed under the aggregate bin. The hopper scale bracket is mounted on the lower rung of the equipment bracket in a semi-suspended manner, and rubber vibration damping pads are installed between the contact surfaces to weaken the impact of vibration from the equipment bracket on the hopper scale; 3 weighing modules (composed of weighing sensor, sensor support and related accessories) are installed on the hopper scale support, and the center of gravity connection of the 3 weighing modules is a regular triangle; There are 3 suspension members on the upper edge of the hopper scale, which are respectively suspended under the weighing sensor in each weighing module.

Hopper scales realize material level control by weighing, the material can be liquid or granular solid. Usually 3 or 4 force sensors are used. The weight of the material is converted into an electrical signal by the force sensors and amplified by the amplifier in the measuring circuit for display, recording and data processing. It has automatic zeroing and weighing data processing functions.

The weighing system of the loading platform building is the core part of the entire weighing platform, directly affecting the accuracy of loading. The weighing system is installed on both sides of the joint feeding gate of the buffer bin through hydraulic cylinders, and is controlled by an electro-hydraulic proportional directional valve to adjust the opening degree of the feeding gate of the buffer bin. The opening size is detected in real time by the encoder. The hydraulic cylinder is controlled by an electro-hydraulic directional valve with a manual control device to open and close the discharge gate of the hopper scale. The differential circuit can achieve the rapid closure of the discharge gate. When the weighing module detects that the ore placed in the hopper scale reaches the target tonnage, the piston rod of the hydraulic cylinder extends and the feeding gate of the buffer bin closes.