The agitator is a typical mixing device, which can achieve good mixing and uniform effect by stirring the material with a stirrer. The agitator is very common in industrial and civil fields, but the working principle and structure of the agitator are similar regardless of the application. The following are several agitators classified by structural features.
1. Paddle stirrer: The paddle stirrer is a relatively simple agitator with two stirring blades. The paddle agitator can be divided into a flat paddle agitator and a pitch paddle agitator according to the shape characteristics of the blade. The flat paddle agitator produces a radial force and the pitch paddle agitator produces an axial force. The paddle stirrer is suitable for mixing low viscosity liquids, suspensions and solutions.
2. Propeller type agitator: The propeller type agitator is a type of agitator with two to three propellers as a stirring part. The propeller type agitator has a high rotational speed during shifting, which forces the material to move in the axial direction, allowing the material to be fully circulated and mixed. The propeller type agitator is suitable for mixing liquids, suspensions, emulsions and other materials at the bottom of the viscosity.
3. Worm and worm agitator: Turbine agitators are usually designed with two to four blades. The blades can be straight or curved and mounted on a horizontal disc. The turbine agitator will form a material height when rotated. Dynamic radial flow. The worm gear agitator is suitable for mixing gases or liquid materials with low viscosity and poor miscibility.
4, anchor stirrer: anchor stirrer as the name suggests, the shape of the blade is very similar to the anchor of the ship. The blades of the anchor stirrer are similar in size to the agitating tank, and only a small gap is left after the combination, so that the blades of the anchor stirrer can clearly clear the reactants on the inner wall of the stirring tank while rotating, and maintain the stirring of the stirrer. effect. Anchor stirrers can be used to agitate materials with higher viscosity.
5, ribbon stirrer: the blade of the ribbon stirrer is a ribbon, the number of the ribbon is two to three, is installed on the screw in the center of the stirrer, the pitch of the ribbon stirrer determines the ribbon The outer diameter. Ribbon agitators are typically operated under laminar flow conditions and are suitable for the mixing of viscous liquids and pseudoplastic fluids.
6. Magnetic stirrer: The magnetic stirrer is a kind of stirrer manufactured by the principle of magnetic coupler. The magnetic stirrer is characterized by a completely closed stirring process, avoiding the leakage problem during the stirring process and improving the working efficiency of the agitator. The magnetic stirrer can be used for the stirring of various toxic and harmful substances, especially suitable for petrochemical, organic pharmaceutical and other industries.