Stirring equipment is a machine that uses mechanical force and gravity to uniformly mix two or more materials. Mixing machinery is widely used in various industries and daily life. The mixer can mix a variety of materials into a homogeneous mixture, such as cement, sand, gravel and water mixed into a concrete wet material; it can also increase the contact surface area of the material for chemical reactions; it can also accelerate physical changes.
A mixer is a machine with a bladed shaft that rotates in a cylinder or tank to blend various raw materials into a mixture or a suitable consistency. There are many kinds of mixers, such as forced mixers, single-shaft mixers, twin-shaft mixers, etc. Note: For mixers and automatic feeders, clean the inside, especially in winter, which can prolong the life. A mixer is just a mixer, because the usual function of a mixer is to mix various dry mortars, so it is commonly called a mixer.
When flowing through a solid wall such as a heat exchanger, the fluid near the wall slows down due to the fluid viscosity, forming a flow boundary layer. There are velocity gradients in the boundary layer. When the flow in the boundary layer is laminar, it is called a laminar boundary layer. When the flow in the boundary layer develops into turbulence, it is called a turbulent boundary layer.