The Vacuum feeding system is suitable for conveying, measuring and batching, with weighing and batching trolley, screw and belt as the material conveying tools, and at the same time, it is a complete set of automation equipment for dynamic weighing and batching control. According to the user's specific production process requirements, through the man-machine group configuration monitoring system and PLC program to load to the weighing and batching trolley material weight, flow control, so as to achieve accurate measurement and batching. As a dynamic continuous measuring and batching automatic control device, it can also provide accurate measuring data and control means for production control and management of various industrial sites.
020-34563445The real-time monitoring and database management (SCADA) software for the vacuum feeding system can save product formulas, reaction data, real-time data, etc., and can achieve functions such as historical data query, report printing, real-time data and status display, remote control, etc. The two upper computer databases can effectively maintain synchronization. Designed the main control program of the lower computer PLC, as well as communication, batching accuracy control, and batching vehicle running subroutines. The ingredient system adopts a composite predictive control algorithm based on adaptive combined with PID. The algorithm organically combines the characteristics of wide range and fast adjustment of adaptive control. When the system deviation is greater than a certain set value, adaptive rule control combined with human experience is used. When the system deviation is less than the set value, PID control is used. The two inputs of the controller are the system expected value and the deviation. Different expected values are used to predict different air drops, and the effectiveness of this method is proved through experiments.
The feeding system adopts a negative pressure Roots pump power source, and the pipeline conveying pressure is in a low vacuum state. The pipeline wind speed is about 10-35m/s, and the material is in a mist state in the pipeline. The starting pressure of negative pressure conveying is equal to or close to atmospheric pressure, and the ending pressure is between -10 and~50Kpa. The vacuum degree of the pipeline gradually increases along the conveying pipeline. The negative pressure dilute phase conveying system is also known as the vacuum dilute phase conveying system. The feeding system is a complete set of automated equipment that is suitable for conveying, measuring, and batching materials, using weighing and batching carts, screws, and belts as material conveying tools, while also performing 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 and Feeding machine includes a frame, a hopper, an electronic weighing scale, a feeding device, and a driving device; The rack is a vertically standing box, with a hopper at the top and a supporting flat plate in the middle. The internal space of the rack is divided into upper and lower areas, with the upper area used for setting explosion-proof weighing scales and the lower area used for setting them; A feeding port is formed on one side of the supporting plate of the feeding device, and a supporting crossbar is set in the upper area; The weighing scale support frame, weighing module, weighing device, and unloading frame are supported and erected on a support plate. The upper end surface of the support frame is equipped with a weighing module, and the weighing device is horizontally set above the support frame. One side of the discharge is hinged to the support crossbar through a first hinge, and the other side is placed on the support frame in contact with the weighing module. The unloading frame is set below the weighing device, and one side of the unloading frame is hinged to the support crossbar through a second hinge. The lower end of the unloading frame is connected to the connecting rod through a third hinge. The connecting rod is connected to a crank, which is connected to the unloading motor set on the support plate;
The feeding device includes a feeding support plate, a feeding pipeline, a feeding motor, and a centrifugal feeding tray. The feeding support plate is horizontally arranged in the middle of the lower area, and the feeding pipeline includes a first feeding pipeline, a second feeding pipeline, and a third feeding pipeline connected in sequence. The upper end of the first feeding pipeline is connected to the feeding port, the second feeding pipeline is arranged vertically, the third feeding pipeline is horizontally arranged and forms a feeding port on the outside of the rack, and a centrifugal feeding tray is arranged vertically below the second feeding pipeline in the third feeding pipeline. The centrifugal feeding tray is connected to and driven by the feeding motor arranged at the lower end of the feeding support plate; The driving device includes a roller motor base, a roller motor, a driving shaft, a front roller, and a rear roller. There are two front rollers and two rear rollers respectively, which are set at the front and rear ends of the chassis of the frame. A roller motor base is set between the front rollers, and a roller motor is set inside the roller motor base. The roller motor is connected to the front roller through a driving shaft and drives it to rotate. The rear roller is a driven wheel. The unloading motor is set on the support plate through the unloading motor base.
