Oilseed Crushing Process and Machine Selection
Date:Jul 14th, 2024
Dingsheng Machine is committed to providing state-of-the-art crushing equipment that enhances oilseed processing efficiency. Crushing is a critical step in the oil extraction process, reducing oilseed size to improve subsequent processing stages. Below, we discuss the objectives and requirements of oilseed crushing, the selection of crushers, and important operational considerations.
Purpose and Requirements of Oilseed Crushing
Purpose of Crushing
Facilitate Flaking: For large oilseeds, crushing reduces particle size, making it easier to flake them effectively. For pre-pressed cakes, crushing ensures that the pieces are of an optimal size for efficient oil extraction during subsequent processing.
Application: Crushing is commonly applied to larger oilseeds such as soybeans and peanuts, as well as pre-pressed cakes.
Crushing Requirements
Controlled Crushing: It is essential to control the degree of crushing to prevent excess powder and oil leakage. Soybeans should be crushed into 2–4 pieces, peanuts into 4–6 pieces, and pre-pressed cakes should be reduced to pieces measuring 6–10 mm in length.
Moisture Content: Proper moisture content is crucial for effective crushing. The recommended moisture levels are 10%–15% for soybeans, 7%–12% for peanuts, and 8%–11% for pre-pressed cakes. Excessive moisture hinders crushing, while insufficient moisture increases powder production.
Selection of Crushers
Various types of crushers are used in the oil industry, including roller crushers, tooth roller crushers, and hammer crushers. Each type is suited for specific applications:
Roller Crushers: Utilize the differential speed of a pair of grooved rollers to shear and compress oilseeds. Suitable for various oilseeds, roller crushers come in single or double pairs, with double-pair models providing more complex processing options.
Tooth Roller Crushers: Use the shearing action of two toothed rollers to crush larger pieces of pre-pressed cakes and coarse oilseeds.
Hammer Crushers: Rely on rapidly rotating hammers to crush oilseeds and allow the particles to pass through a sieve.
Additionally, disc hullers can be adapted to crush soybeans, peanuts, and pre-pressed cakes by replacing standard disks with square grinding plates and reducing the main shaft speed to 160–200 rpm.
Operational Considerations for Crushers
Ensure Even Flow
Consistent flow rates are vital for effective crushing operations. Uneven flow can damage equipment and result in suboptimal crushing. Monitor equipment load and electrical current to maintain stable operation.
Regular Cleaning
Crushing equipment may experience clogging over time. Regular cleaning is essential to prevent blockages. Always stop the machine before cleaning, and never use hard objects to touch moving parts, as this can cause damage or accidents. If metal debris is detected, stop the machine immediately for cleaning.
Timely Replacement of Parts
Parts such as saw teeth, hammers, and grinding plates are prone to wear and require timely replacement. To conserve materials, consider reversing parts to use both sides of the edges.
Maintain Stable Operation
Equipment should operate smoothly, with no radial or axial movement in the rollers during operation.
Contact Us
For more information about our crushing equipment and services, please contact us:
Website: www.dsoilpress.com
Phone: +86-159 3716 3029
Email: company@dingmachinery.com
Purpose and Requirements of Oilseed Crushing
Purpose of Crushing
Facilitate Flaking: For large oilseeds, crushing reduces particle size, making it easier to flake them effectively. For pre-pressed cakes, crushing ensures that the pieces are of an optimal size for efficient oil extraction during subsequent processing.
Application: Crushing is commonly applied to larger oilseeds such as soybeans and peanuts, as well as pre-pressed cakes.
Crushing Requirements
Controlled Crushing: It is essential to control the degree of crushing to prevent excess powder and oil leakage. Soybeans should be crushed into 2–4 pieces, peanuts into 4–6 pieces, and pre-pressed cakes should be reduced to pieces measuring 6–10 mm in length.
Moisture Content: Proper moisture content is crucial for effective crushing. The recommended moisture levels are 10%–15% for soybeans, 7%–12% for peanuts, and 8%–11% for pre-pressed cakes. Excessive moisture hinders crushing, while insufficient moisture increases powder production.
Selection of Crushers
Various types of crushers are used in the oil industry, including roller crushers, tooth roller crushers, and hammer crushers. Each type is suited for specific applications:
Roller Crushers: Utilize the differential speed of a pair of grooved rollers to shear and compress oilseeds. Suitable for various oilseeds, roller crushers come in single or double pairs, with double-pair models providing more complex processing options.
Tooth Roller Crushers: Use the shearing action of two toothed rollers to crush larger pieces of pre-pressed cakes and coarse oilseeds.
Hammer Crushers: Rely on rapidly rotating hammers to crush oilseeds and allow the particles to pass through a sieve.
Additionally, disc hullers can be adapted to crush soybeans, peanuts, and pre-pressed cakes by replacing standard disks with square grinding plates and reducing the main shaft speed to 160–200 rpm.
Operational Considerations for Crushers
Ensure Even Flow
Consistent flow rates are vital for effective crushing operations. Uneven flow can damage equipment and result in suboptimal crushing. Monitor equipment load and electrical current to maintain stable operation.
Regular Cleaning
Crushing equipment may experience clogging over time. Regular cleaning is essential to prevent blockages. Always stop the machine before cleaning, and never use hard objects to touch moving parts, as this can cause damage or accidents. If metal debris is detected, stop the machine immediately for cleaning.
Timely Replacement of Parts
Parts such as saw teeth, hammers, and grinding plates are prone to wear and require timely replacement. To conserve materials, consider reversing parts to use both sides of the edges.
Maintain Stable Operation
Equipment should operate smoothly, with no radial or axial movement in the rollers during operation.
Contact Us
For more information about our crushing equipment and services, please contact us:
Website: www.dsoilpress.com
Phone: +86-159 3716 3029
Email: company@dingmachinery.com
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