A weighing level mixer is a production equipment used in industry to automatically process different powders or liquid materials in a certain proportion. It usually consists of a Weighing system, weighing control instruments, PLC system, and upper computer. The weighing and mixing system includes various equipment such as raw material storage, conveying, weighing and batching, dust removal, and material mixing. The batching method can be reasonably selected based on industry characteristics, production process requirements, and specific material characteristics, such as "incremental" or "subtractive" weighing methods, with multiple working modes including single bucket single material, single bucket multiple material, and multi bucket multiple material. The material enters the electric arc valve from the silo, and is then fed into the weighing module by the screw Feeder. The flow rate is measured by the weighing module, and the speed of the screw feeder is adjusted according to the actual required flow rate to achieve normal feeding. After being measured by the weighing module, the powder enters the feeding box of the spiral pneumatic conveying pump and is pushed forward through the feeding mechanism. The powder enters the mixing chamber and is vaporized by the air at the outlet of the fan, and then sent into the conveying pipeline. The weighing feeder plays the role of quantitative and stable flow. The weighing module can not only measure the flow of pulverized coal but also detect whether the pulverized coal is in short supply in the system. The spiral pneumatic conveying pump plays the role of both air locking and material conveying. Advanced ingredient weighing instruments are adopted, which can easily achieve high-speed communication with the PLC system using communication methods such as ProFibus, MOD-BUS, Ethernet, etc. It has the characteristics of strong real-time system, good reliability, and flexible configuration.

The weighing mixer uses a hopper scale PLC、 The mixing hopper and frame scale can be disassembled and connected to form a modular weighing mixer. Before transportation, each module is disassembled and transported, and then installed as a whole at the destination. It is easy to disassemble, reduces the difficulty of loading and unloading during transportation, improves the utilization of transportation space, and greatly reduces transportation costs; In addition, the L-shaped stirring arm formed by the stirring head can stir raw materials of different heights as a whole. At the same time, the cross-section of the stirring arm also forms an L-shape. During stirring, different raw materials at different heights of the stirring arm will be mixed while stirring, resulting in multiple single stirring and multiple mixing effects, greatly improving the efficiency of raw material mixing and making the mixing of raw materials more uniform. In one or more embodiments, the stirring arm is equipped with a cross arm, which is provided with an inclined or curved surface to concentrate the raw materials along the guiding direction of the cross arm and improve the mixing speed and stirring effect. The mixing head is set on the inclined surface of the mixing hopper to allow the raw materials to move towards the mixing head under the action of gravity. Compared to the horizontally set mixing head, the inclined set mixing head moves the raw materials towards the mixing head under the action of gravity during mixing, allowing the top raw materials to be stirred, reducing the energy consumption of the mixing head and improving the mixing effect; The mixing head set relatively vertically allows the raw materials to stay in the mixing area for a longer time and be stirred more evenly. The discharge end of the feeding hopper corresponds to the feeding end of the explosion-proof weighing scale, the discharge end of the electronic weighing scale corresponds to the feeding end of the mixing hopper, and the discharge end of the mixing hopper corresponds to the feeding end of the hopper scale. There is a feeding bin installed on the weighing scale, which has multiple feeding ports. The feeding hopper is installed on the feeding port. The feeding port is set on both sides of the feeding bin, and the feeding hopper is screwed together with the feeding port. A driving motor is installed below the feeding hopper, which is connected to the screw rod to transport the raw materials from the feeding hopper to the batching scale. The discharge end of the feeding weighing bin is equipped with a discharge valve, which includes a driving air rod, a valve, and a rack. The valve is equipped with a rotating gear, which meshes with the rack and drives the cylinder to drive the rack to move, thereby driving the rotating gear and valve to rotate to open or close the valve.

Characteristics of automatic feeding system:

1. Full process control, monitoring, and recording can achieve remote monitoring and after-sales support, improving management level.

2. Optimize production by integrating parameters such as time, temperature, energy, speed, pressure, etc. and implementing logical control.

3. Using high-resolution weighing sensors and weighing instruments, the weighing accuracy is high.

4. All key components are sourced from high-end brands, ensuring stability and reliability.

5. Open human-machine interface, multi area display and monitoring functions during system operation, easy to operate.

6. Fieldbus working system, IoT design.

7. Automatically detect the operation status, provide alarm location and prompt solutions when abnormalities occur.