The weighing screw system is composed of a driving part, a double-layer screw stirrer, a U-shaped barrel and a weighing module. The rotation direction pushes the material from both ends to the middle, and the inner screw pushes the material from the middle to both ends. The different angles and directions of the screw belt wind the material in different flow directions, and the material is rapidly mixed through continuous convection circulation and shear mixing. Pneumatic gate valve is set up in the center of the bottom of the horizontal cylinder, and the spiral structure of the outer spiral belt with the rotation direction of the main shaft drives the material inside the cylinder wall to the central outlet. The pneumatic gate valve is designed to control the lead amount of the end feed, so as to reduce the impact of the drop on the batching accuracy and keep the actual batching value within the error range.
020-34563445Weighing screw system is a kind of equipment which integrates feeding and metering and can realize continuous and dynamic feeding and metering of granular materials. The principle of constant speed quantitative feeding is adopted, which has simple structure, high measurement accuracy and wide application range. It consists of feeding screw, metering screw, weighing sensor and control system, which can monitor and adjust the material flow in real time. Based on the continuous dynamic feeding measurement, the working principle of constant-speed quantitative feeding scale is adopted, and the functions of feeding transportation, weighing measurement and quantitative feeding control are integrated into one, forming an electromechanical integrated continuous dynamic feeding measurement equipment.
It can meet the different technological requirements of different materials, and decompose the whole automatic Batching system into thousands of modules with different functions (such as weighing module, mixing module, etc.). Each module is composed of high-performance micro-control chips and their peripheral circuits, which are packaged in their own control boxes, which can be conveniently installed on the guide rails in the electrical cabinet, and each module in each control box can independently complete its specified control functions.
The information exchange between control modules is realized through CAN bus. CAN bus is a highly reliable industrial control bus, which CAN connect all the control modules with different functions required by batching process to the CAN bus, so as to realize the transmission of control information and status information among functional modules through the CAN bus, so adopting CAN bus structure is a good choice. The feeding system not only selects various control modules that can complete specific batching sub-functions, but also selects an ordinary office computer as a man-machine interface and also performs data processing.
As a man-machine interface, the main functions of the computer CAN be summarized as follows: (1) The information of batching status uploaded by each module through CAN bus is displayed on the computer screen intuitively and dynamically in the form of animation, so that the operator can see the batching process at a glance; Click the button and menu on the graphical interface with the mouse to realize the manual intervention in the batching process (such as starting and stopping the flight change, etc.), that is, send the corresponding control command to the relevant control module via CAN bus) and summarize the uploaded batching data into various report forms, so as to facilitate the storage, display and printing, receive the recipe from the management department through the network, and transmit various batching production data to the management department at the same time.
