Screw machine is a common mechanical equipment, its structure and working principle is very important. This paper will introduce the structure and working principle of screw machine in detail.
Screw machine structure
Screw machine is mainly composed of motor, reducer, screw, feed port, discharge port, screen and so on.
1. Motor: The motor of the screw machine is its power source, which converts electrical energy into mechanical energy to drive the movement of the screw.
2. Reducer: reducer is used to reduce the speed of the motor, improve the torque, so that the screw can run at an appropriate speed
3. Screw: Screw is the core component of the screw machine, usually composed of spiral blades and shafts. The spiral blades are responsible for conveying materials, and the shaft holds the spiral blades together. Screw is usually divided into single screw and twin screw two kinds.
4. Feed port and discharge port: The feed port is used to feed the material into the screw machine, and the discharge port is used to discharge the material. The design position and form of the feed and discharge ports are determined according to the specific application requirements.
5. Screen: The screen is located at the discharge port, which is used to filter impurities in the material to ensure the purity of the discharge.
The working principle of screw machine
The screw machine is driven by the motor to rotate the screw. When the screw rotates, the material is pushed forward by the spiral blade. In the process of material movement, the material will be continuously transported along the spiral direction of the spiral blade due to the existence of the spiral blade
Specifically, the working process of the screw machine can be divided into the following steps
1. Feed: feed the material into the screw machine through the feed port. Under the action of the screw rotation, the material is pushed by the spiral blade and moves forward along the direction of the helix
2. Conveying: The material is continuously transported along the direction of the helix under the action of the screw. The speed of the screw and the shape of the spiral blade will affect the conveying speed and conveying capacity of the material.
3. Separation: During the movement of the material, a part of the smaller particles will be discharged through the pores of the screen, so as to achieve the separation and screening of the material.
4. Discharge: the material after screening is discharged from the discharge port. The position and form of the discharge port can be adjusted as needed to meet different material handling requirements.
The working principle of the screw machine is based on the characteristics of the spiral blade continuous pushing and conveying materials. Through reasonable design and adjustment, the fast, efficient and continuous conveying and processing of materials can be achieved.
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