At Fuxun Machinery, our peanut butter is a high-shear colloid grinder designed for nut paste processing. In this article, we explain how a peanut butter machine works, introduce its main parts and what each does, and provide a detailed operation, cleaning, and maintenance guide to help you achieve consistent quality and long machine life.
How Does a Peanut Butter Machine Work?
1. Key Components
The core of our peanut butter grinder is
- Stator (Stationary Disc): This is a fixed, cone-shaped component with very finely machined teeth on its surface. The commonly used profile for peanut butter is composite teeth, which combines shear-type teeth and diamond-shaped teeth.
- Rotor (Rotating Disc): This is a corresponding cone-shaped component that is driven by a powerful motor and rotates at high speeds.
- Hopper: Holds roasted peanuts or pre-crushed material and ensures continuous feeding.
- Motor & Transmission System: Provide high rotational speed to the rotor.
- Discharge Outlet: Where the finished peanut butter flows out.
2. Grinding Process
1. Peanut Feeding
Roasted peanuts are fed into the hopper at the top of the machine. Gravity and the feeding screw push them steadily toward the grinding chamber.
2. Grinding With Rotor and Stator
Inside the grinding chamber, a rotor spins at high speed against a fixed stator. As peanuts pass through the narrow gap between rotor and stator, they are subjected to shearing, grinding, and high-frequency vibration. The grinder chamber is divided into three stages — coarse, fine, and ultra-fine — so the peanuts are gradually reduced to the desired fineness. During this process, solid and oil become fully dispersed, creating a uniform and stable peanut butter.
3. Discharge
The finished peanut butter flows out from the outlet, ready for further processing.
