Grain screening machines do not rely solely on vertical air screens to complete sorting functions, but usually work in conjunction with various technologies such as vertical air screens and vibrating screens. The following is a specific analysis:

1. The function of a vertical air screen

Working principle: Based on the aerodynamic characteristics of the material, separate light and heavy impurities by adjusting the airflow velocity. Light impurities (such as dust and straw debris) are carried away by the airflow and centrally discharged, while heavier qualified seeds or grains enter the subsequent process through the screening surface.

Typical applications: For example, the multifunctional multi-layer legume and miscellaneous grain cleaning machine and the Julite compound air screen cleaning machine both adopt a dual vertical air screen design, achieving two air selections and significantly improving the removal effect of light impurities.

2. Supplementary functions of vibrating screen

Geometric dimension sorting: The vibrating screen separates large and small impurities from finished grains by replacing different specifications of screen pieces based on physical dimension differences such as length and width of the materials.

Collaborative workflow: The material processed by the vertical air screen will enter the vibrating screen for secondary sorting to further remove residual impurities and ensure the purity of the final product.

Precautions for grain screening machine:

1. Before starting work, it is necessary to carefully read the user manual;

2. Before starting, check if there is any looseness in the connecting parts of the machine and eliminate it.

3. Before starting work, electricians must check the condition of all electrical appliances and ground the machine at the marked location. During the operation, the grounding should be good;

4. Connect the power, tap the start switch, and check if the machine's steering meets the requirements.

5. When the machine malfunctions, it should be stopped immediately for maintenance, and troubleshooting during operation is strictly prohibited;

6. It is strictly prohibited to put hands into the feeding bucket during the operation of the hoist, and it is forbidden for personnel without normal behavior and children to use it