Common types of撒料盘 for sand and gravel separator machines

Sandstone selection powder machineCommon types of seasoning dishes

The flat spreading pan has a simple structure. It allows the powdered material falling onto the pan from above to be dispersed by the rotation of the pan, which generates radial centrifugal force and radial motion in the material. This results in a throwing motion along both radial and tangential directions, effectively spreading the material.SifterA material curtain forms on the inner cross-section, with air currents from the lower part of the body passing through it, carrying qualified fine powder and some coarse powder into the classification area. This indicates that the more uniformly and loosely the material curtain is dispersed, the greater the likelihood of carrying away qualified products under suitable air flow conditions.

The撒料盘, in addition to the aforementioned撒料mechanism, also features the following two functions:

The facility utilizes the inherent weight of coarse powder to achieve preliminary grading. It employs a stream of air at a certain speed to transport fine powder from bottom to top into the grading area. Theoretically, fine powder will rise with the air stream only when the adhesive force exerted by the air on the powder, which rises with the air, is greater than or equal to the weight of the fine powder. This is because the adhesive force of the air on the fine powder is a surface force, while the gravitational force of the material is a volume force, making it difficult to lift particles of larger size. This enables the preliminary grading function of the material. The higher the air speed, the larger the particle size of the material that can be carried away by the air stream.

(2) Pre-classification is achieved by utilizing the inertial centrifugal force generated by the material. The spreading of the material relies on the spreader disk to induce rotational motion, which simultaneously imparts an inertial centrifugal force, resulting in radial movement. As the inertial centrifugal force acquired by the material is a volume force, even larger particles can obtain a greater inertial centrifugal force and a relatively smaller viscous damping force. Coarser particles thus achieve higher velocities, leading to a scenario where coarse particles are upfront and fine particles follow. Once the spreader disk reaches a certain rotational speed, the coarse particles collide with the surrounding shell, thereby achieving the pre-classification objective.