In grain processing, it can be argued that there must be a lot of air involved in order to be able to achieve safe production and also be able to form a modern processing technology, which is especially manifested in the grain cleaning process. The use of airflow separation and dust control to consume the largest amount of air, and there is a gradual increase.
When the material flows through a perforated plate with a certain open porosity rate, the material is subjected to a flow of air at a certain speed through the perforated plate, and the material is boiled or fluidized, which has significant classification and separation characteristics.
The grain particles are fluidized under the action of the air flow. The grain boils in the air flow, tumbling and rotating up and down. The air flow has a long and sufficient effect on the material, and has a significant airflow “washing” effect.
Due to the difference in particle size and shape, non-spherical particulate materials are prone to segregation of the material during fluidization: fine and light particles form a dilute phase region in the upper part of the material layer; short stem light impurities in the upper part of the grain An agglomerated suspension forms; heavy particles flow at the bottom of the bed.
The effect of the air flow increases the material's spatter, and the porous plate can flow with a slight tilt of the material.
Fluidization can be achieved at a flow rate lower than the suspension speed of the grain.
Using fluidization technology, the grain can be “washed” and classified by airflow, and the grain mixture can be divided into three types: pure and light, light grain, light mixture, and heavy grain. The pure and light impurities are discharged along with the air flow. The heavy grain meets the requirements of the net valley and does not contain light impurities. Gas-solid fluidization classification and separation of grains belongs to the form of vertical airflow separation, but it is superior to the traditional vertical suction duct.

Y Type Control Basic Valve

The Y-type basic valve of Aone-Best is the basic mother valve of all hydraulic control valves. It can equiped with different pilot to adapt to different occasions from the function. For example, with a pressure reducing pilot, the whole valve is a pressure reducing valve; with a pressure relief pilot, the whole valve becomes a pressure relief valve, and so on. Valves are available in a variety of size and flange standards for selection, widely used in municipal water supply, building water supply, air conditioning, fire protection, industrial water, power and irrigation facilities.

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