(1) Hydraulic oil press. Hydraulic oil press is a traditional small oil press, the production process is intermittent. Pressing oil tea seeds with hydraulic oil press, the requirements for pretreatment are: shelling and separating the shells in the kernel as cleanly as possible; crushing the kernel into smaller particles, and preferably rolling the billet if possible; pressing after frying the material in a pan or rotary pan. The process is characterized by low technical requirements for operation, high oil yield and good quality of gross oil, but high labor intensity. The machine is suitable for occasions: small processing capacity, small workshop production, single daily processing capacity of about 1 t.
(2) small power screw oil press. Small power screw oil press is a continuous oil press, the representative model for the 95 type oil press, there are a variety of variants or improved design. With small power screw oil press to press oil tea seeds, the requirements for pretreatment are: the seeds should be broken into smaller particles, the best conditions for rolling billet; with a pan or rotary pot frying materials; shelling is not a mandatory process. Its process features are: low technical requirements for operation, higher oil yield, poorer quality of gross oil than hydraulic presses, and less labor intensity than hydraulic presses. The machine is suitable for occasions: small processing capacity, small workshop production, single machine daily processing capacity of about 5 t. The use of this oil press should be noted that: the oil press is prone to slippage not to eat material phenomenon, especially oil tea seed shelling press more prone to this situation. The oil press to do appropriate transformation can eliminate this hidden trouble.
(3) medium and large power screw oil press. Large and medium-sized power screw oil press is suitable for large and medium-sized, continuous, large processing capacity of the oil production plant. Use it to press oil tea seeds, the requirements for pretreatment are: oil tea seeds should be cleaned, crushed into smaller particles, then rolled billet, with multi-layer (such as five layers) steaming and frying pan for the material billet. The process is characterized by continuous production, low labor intensity, low oil yield, commonly used in pre-pressing (followed by leaching process) process, and high technical requirements for operation. And small power screw oil press, the machine in production also need to pay attention to the phenomenon of slippage does not eat material, design a good choice of models or make appropriate modifications to the oil press can eliminate this hidden trouble.