The longer the press press time, within certain limits, to squeeze more oil completely, but the attendant pressing machine to reduce production capacity. When normal production screw press, the press time can be approximately regarded as time-pressed virgin material through the chamber space. Virgin material particle residence time in the virgin bore its quantitative terms, without considering any factors that can be used with the screw shaft speed n z lead described, namely τ = z / n. However, the results very short time, completely at odds with the actual situation. This shows that prolonged squeeze many factors, which includes two aspects: ① squeeze cage structure include: pressing cage length, number (section number) virgin lead screw and screw interruptions, blade configuration, pressing cage structure form, pressing bore the degree of wear parts. ② operational and process parameters include: spindle speed, the cake slit width adjustment, pressing the material properties, the pressing conditions. Press pretreatment process requirements: Before materials embryo into juice, must undergo pretreatment process, the pre-press quality will directly affect the normal operation and oil yield. Different oils have different pretreatment process requires price Henan screw press, but mainly include the following items: 1. Clean-up. Of fuel into the plant contains some impurities (sand, gravel, iron, etc.), if not carefully cleaning, internal parts of the press will accelerate wear and tear, lower oil yield, and even cause malfunctions and accidents. Its ancillary equipment: cleaning sieve, stone machine, magnetic separator and so on. 2. Sheller. For shelled oil, then squeeze should peel, which can increase productivity and oil yield. Its ancillary equipment: Sheller, separation sieve, separating machines. 3. Broken. Some oils can be pressed into a monolith screw press Henan Which is good, but after crushing, flaking and then press, can significantly improve the oil yield. Its supporting equipment: crushers, flaking machines. 4. Steaming and roasting. Steaming and roasting is an important part of improving the oil yield of Henan screw press quotes, commonly used method is the first oil wetting, and then dried by pan so the oil reaches the pressing moisture and temperature process requirements, its supporting equipment They are: steaming pot, pan fried seeds.