The weighing positive pressure mixer adopts Siemens PLC to control the automatic operation of all its interlocking equipment (start stop, interlocking, position switching, etc.), and the upper computer is programmed by Siemens WINCC configuration software. The entire configuration operation screen is embedded into the overall Weighing system for equipment start stop operations, operation display, fault query records, and maintenance. The system has the characteristics of user-friendly interface, concise operation, and reliable operation. The weighing mixer is suitable for conveying, measuring, and batching powdered and granular materials. A complete set of automated equipment that uses weighing and batching carts, screws, and belts as material conveying tools, and simultaneously performs dynamic weighing and batching control. According to the specific production process requirements of users, the weight and flow of materials loaded into the weighing and batching truck can be controlled through a human-machine configuration monitoring system and PLC program, thereby achieving accurate measurement and batching. As a fully automated control device for dynamic continuous measurement and batching, it can also provide accurate measurement data and control methods for production control and management in various industrial sites.

The weighing mixer adopts a hopper scale and a bottom plate set below the hopper scale. The bottom of the hopper scale is equipped with support feet, and a frame scale is detachably connected between the bottom plate and the support feet. The top and bottom surfaces of the Electronic scale are respectively connected to the support feet and the bottom plate by bolts. The bottom surface of the bottom plate is equipped with a support frame, and the bottom end of the hopper scale is detachably connected to a discharge cylinder that runs through the bottom plate. A through hole is formed in the middle of the bottom plate for installing the discharge cylinder, and the bottom end of the discharge cylinder is detachably connected to a valve. The two ends of the discharge cylinder are respectively connected to the hopper scale and the valve by bolts. The top end of the hopper scale is detachably connected to a top cover, and one side of the top cover is provided with a feeding port that is connected to the hopper scale. The middle part of the top surface is detachably connected with a motor, and the bottom end of the motor is bolted to the top cover. The motor is connected and drives a rotating shaft that extends into the hopper scale, The top of the rotating shaft is connected to the top cover through a bearing, and the rotating shaft is detachably connected with two symmetrical positioning sleeves. The two positioning sleeves are connected to the rotating shaft key and fixed by bolts. The outer walls of the two positioning sleeves are equipped with several ring-shaped support rods, and the outer side of the rotating shaft is equipped with several ring-shaped sail plates. The two ends of the sail plates are respectively detachably connected to the ends of the support rods on the outer side of the two positioning sleeves. The support rods on the outer side of the two positioning sleeves correspond uniformly, and the sail plates are set between the two corresponding support rods on the upper and lower sides, and fixed by bolts. The support frame can be matched with the bottom plate for erection. The material to be mixed is added to the hopper scale from the feeding port, and then the weighing sensor is used to measure the internal balance of the hopper scale. Weighing materials makes it easier to measure incoming and outgoing materials, and is coordinated with positioning sleeves, sails, and support rods, The mixing structure that constitutes the cage expands the mixing area and is driven by a motor to rotate the shaft. Then, the positioning sleeve and support rod are used to drive the sail to mix the materials in the hopper scale, improving the mixing efficiency and quality of the materials.

Composition of weighing mixer

Feeding section: The feeding section is the part where the material is fed from the silo to the weighing equipment. Different feeding equipment is selected according to the different characteristics of the material, such as electromagnetic vibration Feeder, screw feeder, etc.

Weighing section: The weighing section consists of Weighing modules, standard connectors, junction boxes, and hopper scales, which work together with weighing instruments to weigh materials and detect errors.

Discharge equipment: Discharge equipment can be weighing equipment (reduction method) or discharge equipment (incremental method, zero position method), usually composed of emptying valves, electromagnetic vibration feeders, spiral feeders, electric (pneumatic) valves, etc.

Control system: The ingredient control system consists of weighing instruments, upper industrial control computers, programmable controllers, and other control devices.

Calibration system: The weighing module should be regularly calibrated to ensure the accuracy of the system's ingredients.

The main functions of the ingredient control system

Monitoring function: Detect and monitor the instantaneous flow rate, daily total amount, monthly total amount, annual cumulative amount and other parameters during the weighing process of the belt.

Screen display: The operating parameters of the control parameters during the ingredient process can be displayed through a computer monitor, as well as real-time ingredient curves and tables.

Print management: Ingredient reports can be printed at any time for saving and querying.

Communication function: IPC and PLC can exchange bidirectional data and information between instruments.

Data processing: The system can automatically process the collected signals and output them to the corresponding control variables.

Control function: Automatically control the normal operation of the equipment based on the corresponding set values before operation, including PID regulation.

Alarm function: The host alarms for various parameter abnormalities or device status in screen mode and audio-visual signal mode.

The automatic Batching system is a complex automatic control system solution that must be designed based on the characteristics of the controlled materials and process requirements, as well as the specific reality of the enterprise and comprehensive considerations of on-site production, to achieve precise measurement control and meet the requirements of the batching system.