A screw press is a mechanical device widely used in agriculture and food processing industries to extract oils and fats from plant raw materials. Its working principle is based on mechanical extrusion, which separates the oil from the raw material through the rotation of the spiral. This article will introduce the operating principles and operating instructions of the screw press in detail to help users better understand how to correctly operate and maintain this critical equipment.

1. Working principle of screw press

The structure of screw press

The screw press is mainly composed of a feed port, a pressing screw, a silo, a pressing chamber, a slag discharge port and an oil-water separator. The pressing screw is its core component, responsible for squeezing out the oil in the raw materials, while the silo is used to store the plant raw materials to be processed.

working principle

The working principle of the screw press is based on the mechanical extrusion of materials. Specific steps are as follows:

a. Raw material feeding: Add the plant raw materials to be processed into the silo through the feeding port.

b. Pressing process: The raw materials are pressed into the pressing chamber, and the rotation of the spiral causes the raw materials to be subjected to continuous squeezing force to separate the grease.

c. Oil-water separation: The mixture of grease and vegetable residue enters the oil-water separator through the slag discharge port, and clear vegetable oil is separated.

d. Oil collection: Clear vegetable oil is collected and stored through another outlet.

3. Control parameters

The operation of the screw press requires mastering some key parameters to ensure efficient oil extraction:

a. Screw speed: The rotation speed of the screw can be adjusted according to the nature of the raw materials and production needs, and is usually operated in the low to medium speed range.

b. Pressing temperature: Some raw materials release oil more easily at higher temperatures, but the temperature needs to be carefully controlled to avoid overheating and damaging the oil quality.

c. Pressing pressure: Control the oil extraction efficiency by adjusting the squeezing force of the pressing screw.

d. Scum discharge speed: It is necessary to ensure that the slag is discharged smoothly to avoid blockage and equipment failure.

2. Operation Guide for Screw Press

safe operation

The screw press is a high-pressure equipment and the following safety measures must be observed during operation:

a. Wear appropriate personal protective equipment such as gloves and goggles.

b. Ensure that the equipment is installed securely and operates stably.

c. Before operation, check whether all components are operating normally, such as motor, transmission system, etc.

d. Avoid putting hands or other objects close to the running screw.

2. Raw material preparation

a. Raw materials should be cleaned and screened to remove impurities and foreign matter to ensure the quality of raw materials.

b. Control the moisture content of raw materials. Different raw materials have different requirements for moisture.

3. Equipment operation

a. Before starting the device, ensure that all control parameters are set correctly.

b. Gradually increase the rotation speed of the spiral and observe the extraction of grease.

c. Regularly check the discharge of slag to ensure that the slag discharge port is not blocked.

d. If abnormal noise or equipment vibration occurs, stop the machine immediately for inspection.

4. Cleaning and maintenance

a. Clean the equipment promptly after each operation to prevent oil residue from remaining.

b. Regularly check the lubrication system of the equipment to ensure that all lubrication points are fully lubricated.

c. Perform regular maintenance on the equipment, including checking the wear of the drive system, motor and screw.

d. Follow the maintenance recommendations and service intervals provided by the manufacturer.

in conclusion

The screw press is an important agricultural and food processing equipment that can efficiently extract oils and fats from plant raw materials. Proper operation and maintenance are critical to ensuring efficient operation of equipment. This article introduces the working principle and operation guide of the screw press, hoping to help users better understand and use this key equipment, thereby improving production efficiency and oil extraction quality.

If your company wants to establish a business relationship with us, please briefly describe the cooperation intention and send an email to：chuantaiscrewpress@gmail.com