For chemical equipment, the reaction equipment is familiar to everyone. It is a kind of machine used for material reaction. The most common one is the reaction kettle.
The structure of the general reactor is divided into a tank body, a head, a motor, a stirring device, a foot, and the like. The stirring device of the reaction kettle is the main device for material mixing, so the choice of the agitator in daily production is very important.
The stirring device of the general reactor can be divided into: paddle type, toothed type, anchor type, frame type, ribbon type screw type, turbine type (bending leaf, folding, straight leaf, push type), Bruma gold type and many more. The most commonly used one is a paddle mixer. Among the many stirring devices in the reactor, the paddle agitator has the simplest structure. The whole blade is made of flat steel. The joint is welded or bolted to the hub. The number of blades is generally 2, 3 or 4, and the blade form Generally, it can be divided into two types of flat leaves and folded leaves. According to the shape characteristics of the blades, the paddle type agitator can be divided into a flat paddle agitator and a tilt paddle agitator.
The flat paddle mixer produces a radial force that generally runs slower. Mixing occurs in the radial direction, and no good agitation occurs in the vertical direction. However, due to its simple structure, it is widely used to promote gentle mixing such as heat transfer, mixing and dissolution of soluble solids.
The inclined paddle mixer produces axial force. The agitator blades can be inclined at 24°, 45° or 60°. They have axial splitting, radial splitting, and the flow pattern is more complex than the straight blade paddle. It is higher than the straight paddle and the overall effect is better.
Therefore, when the reactor agitator is configured as a paddle type, it is generally suitable for a low-viscosity liquid, the suspension and the solution are stirred, and the medium-high viscosity material is not recommended to be a reactor equipped with a paddle type stirring device.