The weighing bridge of belt scale acts on the weighing sensor through a lever to send the weight of the material detected on the belt to the weighing instrument. At the same time, the speed signal of the belt conveyor by the velocity sensor is also sent to the weighing instrument. The instrument integrates the speed signal and the weighing signal to obtain the instantaneous flow and cumulative amount. The speed sensor is directly connected to the large diameter speed measuring drum and provides a series of pulses, each representing a belt movement unit, and the frequency of the pulse is proportional to the belt speed.

Reaction pot weighing system to be weighed after the start of the weight signal and speed signal to the weighing instrument, through the amplification of the A/D conversion, calculated instantaneous flow and cumulative amount, and displayed in the field weighing instrument. The indicator uploads the signals to the PLC module, the PLC analog input module collects the weight signals and speed signals from the screw and feeding device, and carries out the self-tuning operation according to the parameters set by the user, and the level weight of the materials in the reaction tank measured by the weighing module of the reaction tank regulates the flow rate of each downstream port of the dosage reaction tank, so as to guarantee the balance of the inlet and outlet of the mixing and storage tanks.

The weighing conveyor feeds the measured value as an input signal into a calculating device with multiplication and integration functions. The belt feed detector, integrated controller and drive unit, the coal charging detector, belt feed detector and drive unit are installed as parts of the feeder, the loading detection unit consists of a bearing roll and two weighing modules, two weighing modules measure the mass (gravity) of the precision weight table and transmit the signal to the integrated controller, and the signal of each sensor is consistent with the previous data. The signal of another sensor is compared, thus testing the effectiveness of the signal, if the signal is effective, the signal is multiplied by the correction factor to obtain the actual mass per unit length of the belt.

The distillation tank weighing system adopts a computer with stable performance to complete the data acquisition and communication processing, which is convenient to provide processing accuracy and cost reduction, and the data output and management are carried out through the COM communication interface of the computer itself; Mitsubishi F900 touch screen is chosen to replace the conventional weight indicator to do the human-machine interface, which makes the programming of the interface between PLC and weight indicator become simpler, and enables the display function to be enhanced. The weighing system is to add two or more kinds of materials to the mixing tank automatically according to a certain weight ratio, and then automatically discharges the materials after mixing to meet the predetermined requirements.

The weighing system of the reaction tank is transmitted to the central control room for centralized monitoring and management through high-speed network, and the host computer of the central control room also transmits control commands to the PLC measurement and control terminal through high-speed network to implement decentralized management of each unit. Integrating computer technology, automatic control, communication technology, weighing technology as a whole, its control function is perfect, display, operation is centralized, data processing is convenient, installation, maintenance is simple, the system is easy to expand.

Explosion-proof electronic scales use isolation, voltage reduction, current limitation, sealing and fiber optic communication technologies to eliminate or isolate the links in the system that may generate explosive sources (electrical short-circuit sparks, electrostatic friction sparks, high-temperature energy concentration, etc.), so as to achieve the purpose of using them in an environment where there is a risk of explosion. The standard configuration consists of three basic units: the platform, the weighing module and the weighing instrument; the weighing module includes the weighing instrument, the electronic scale and the signal cable. Depending on the user's needs, it is possible to purchase other external equipment to make up the various configurations, including: computers, printers, large screen monitors, power surge protectors, regulated power supplies and multifunctional power sockets.

The weighing mixer adopts automatic control to realize the automatic control and supervision of raw material feeding, weighing and metering, vacuum feeding, dispersion and mixing, etc. The dispersion time and cylinder number can be selected and adjusted on the computer according to the production requirements, and the opening and closing of the motor equipment and the opening and closing of the feed valve in the process are controlled by the computer. Automatic filling line is adopted for filtration and packaging of finished products, and the palletizing process is robot palletizing.

Weighing conveyor adopts weighing controller technology and gravity weighing principle to design a continuous material flow weighing equipment. Combined with servo motor stacking and careful mechanical design, the weighing instrument and microcomputer are the control core, the piezomagnetic sensor is the weighing module, and the weighing instrument is the analog-to-digital conversion device. In addition to some auxiliary control circuit and power amplifier circuit of the weighing conveyor loading system, can be used for material measurement can also be used as a quantitative feeding equipment.

Hand-pushed explosion-proof electronic scale The existing truck and explosion-proof electronic scale are integrated, and the measurement and displacement of electronic scale are carried out at the same time, saving valuable time. It is suitable for use in the field of explosive gas or explosive dust, and can be divided into different danger grade areas according to the frequency, duration and danger degree of explosive substances. Various technical measures, such as voltage reduction, current limiting, isolation, sealing and optical communication, are taken to eliminate or block the possible detonation source in the electrical circuit of the weighing instrument, so that the explosion-proof weighbridge can work safely in the corresponding dangerous area.