The automatic batching system is used as a central control area to complete the whole process of weighing and feeding. Before the equipment is equipped, the staff will open the switch, and the PLC central control area will send a signal to start the corresponding solenoid valve to inject the material into the reactor. At the same time, the weighing module will start to work. When the amount of the reaction tank is increased to the equivalent of the weight set by the quantitative setting reference, the central control area receives the action signal of the weighing module, and immediately closes the solenoid valve for adding materials and stops adding materials.
020-34563445The automatic Batching system is mainly used for conveying dry powder and granular products with air flow as the carrier. It is a new technology that uses the flow of air in sealed pipelines to transport solid materials. Generally speaking, the airflow is ordinary air, but in some special conditions, dry, cooled, heated air or inert gases such as nitrogen can also be used as transport airflow. Used for conveying dry powder and granular products using airflow as a carrier. Generally speaking, the airflow is ordinary air, but in some special conditions, dry, cooled, heated air or inert gases such as nitrogen can also be used as transport airflow. According to the basic structure, the product (solid particles) is carried by the airflow through a certain length of pipeline after being mixed with the airflow. This pipeline is connected to the feeding system or cyclone separator to separate gas and product.
Advantages of Airflow Weighing and Feeding machine:
The positive pressure air flow conveying system or air transport system uses the air flow output by a blower (such as a Roots blower) as a carrier to unload bulk powder particles into a pipeline for pressure conveying. The positive pressure value of the dilute phase positive pressure pneumatic weighing and batching system is less than 0.15 Mpa, with a gas-solid ratio of 5-20. The capacity of the positive pressure pneumatic batching system can reach 60 tons/hour (single air transport line) and the conveying distance can reach 400 meters.
The negative pressure air delivery system or negative pressure air transportation system is a vacuum generated by a vacuum pump (such as Roots or water ring) that sucks bulk powder materials into designated equipment with negative pressure air flow. The negative pressure value of the negative pressure pneumatic metering and batching system is less than 0.06Mpa, and the gas-solid ratio is 1 to 15. The high vacuum air force is composed of a receiving tank, a filtering device, and a vacuum pump. The vacuum pump sucks the material into the receiving tank, and the gas is filtered and discharged, and the material falls into the weighing hopper of the receiving scale. It belongs to the negative pressure high concentration pneumatic conveying method, which has the characteristics of a long conveying distance (<60 meters) and a gas-solid ratio of 2-8. Negative pressure pneumatic conveying has the characteristics of continuous and uniform feeding, and it is difficult to supply materials such as garbage and wood chips with pressure conveying. Thin fibers can be transported from multiple locations to a single centralized location and have a certain mixing function. At the same time, the capacity of the air delivery system can reach 30t/h (single conveyor line).
The concentration of particles in a pipeline relative to the gas is a very important indicator, called relative density or mass flow ratio, which is the ratio of particle quantity to gas flow rate. There are many configurations and factors to consider. To ensure the correct and effective design of the conveying system, selecting accessories is also important for delivery.
Characteristics of pneumatic conveying system:
1. The conveyor line is composed of a closed smooth pipeline without any mechanical moving parts.
Compared to belt/screw/chain conveyors, pneumatic conveying pipelines can be arranged vertically, horizontally, bent, and can pass through narrow spaces. The method of distributing products to multiple conveying points and extracting materials from multiple feeding points through diversion valves can be simpler and easier to implement. The pipeline is easy to expand or rewire for future use.
3. It is possible to transport different types of products at different times, and in fact, all powders and particles can be transported by pneumatic conveying.
4. There will be no cross contamination when transporting different materials. Dangerous products and valuable items, health products, food, and drugs can all be transported through a sealed control system. In certain environments that require special control, gases can be sealed and circulated in the system.
Pneumatic conveying consists of four components:
1. Source power - blower, screw fan, compressor, exhaust fan or vacuum pump, used to generate airflow.
2. Feeder - Rotary valve, Venturi tube, screw feeder, air duct or other feeding device, which adds particles into the airflow under control.
3. Conveyor lines - straight pipes, bent pipes, and diversion valves.
4. Separators - cyclone separators, feeders, filters, feeders or silos/pipelines, separate particles from airflow.
