Oil press is a kind of equipment to extract oil from oil crops by mechanical external force. It is widely used in vegetable oil production, such as soybean, peanut, rapeseed, etc. It is the core equipment of oil mill. The main function of oil press is to convert oilseeds into edible oil or industrial oil to meet food processing and market demand. The oil press machine realizes the separation of oil and grease through physical pressing or chemical extraction. Physical pressing utilizes a screw shaft or hydraulic device to exert pressure on the oilseed, causing the oil to seep out of the cells. Chemical extraction dissolves the fats and oils through solvents and then recovers them through evaporation. Physical pressing is more suitable for high quality oil production because it retains the nutrients and flavor of the raw material. So, what oil press equipment do you need to open an oil mill?
First, the core oil press equipment: according to the needs of the selection process type
1. Hydraulic oil press
Applicable scenarios: small-scale workshops, special oilseeds (such as sesame, walnut) or cold pressing process to retain the flavor of raw materials.
Advantage: Wide adjustable pressure range, high oil quality, suitable for low temperature processing.
Limitations: low capacity of single machine (e.g. daily processing capacity of about 100-200 kilograms), need to be used in parallel with more than one.
2. Screw press (mainstream choice)
Technical classification:
Hot press: Built-in steaming and stir-frying function to improve oil yield (e.g. soybean oil yield can be up to 18%-22% by hot pressing).
Cold press model: low temperature pressing to retain the nutrients, suitable for linseed, camellia oil and other high-end oil products.
Capacity matching:
Small-sized workshop: choose single-screw machine (daily processing capacity of 300-500 kilograms).
Medium-sized workshop: twin-screw or multi-stage press model (daily processing capacity of 1-3 tons).
Market reference: a brand 6YBS-Z380 screw machine supports more than 30 kinds of raw materials such as peanut, rapeseed, etc., with an oil yield of more than 85%.
3. Ultrasonic assisted pressing system (upgrade option)
Technical Advantage: Destroy cell wall by sonic vibration, improve oil yield by 5%-8%, suitable for high value-added oils (e.g. peony seed oil).
Cost reminder: the price of equipment is 30%-50% higher than the traditional model, need to evaluate the return on investment.
Second, the list of supporting equipment
Pre-treatment equipment: washing machine, crusher, steam fryer (the key link affecting the oil yield).
Filtration equipment: plate and frame filter (physical filtration), centrifugal filter (efficient separation of oil residue).
Refining equipment: deacidification, decolorization, deodorization equipment (to improve the stability and appearance of oil).
Auxiliary equipment: conveyor belts, oil storage tanks, testing instruments (to ensure the automation and standardization of the production process).
Third, equipment selection to avoid the pit guide
Scale matching principle:
5-10 square meters workshop: hydraulic press + small filter (total investment of about 2-5 million yuan).
More than 30 square meters workshop: spiral machine + refining equipment (investment of 10-30 million yuan).
Material certification:
Priority is given to 304 stainless steel or food grade plastic parts, avoid zinc alloy plating (easy to oxidize).
After-sales traps:
Require the signing of a “three guarantees” agreement, specifying the warranty period (usually 6-12 months) for wearing parts (e.g. screws).
Energy consumption comparison:
The single consumption of screw machine is about 0.5 degree/hour, and the hydraulic machine needs to be equipped with air compressor (increase energy consumption by 30%).
Fourth, equipment maintenance and cost control
1. Daily maintenance in four steps
Before start-up: check bearing lubrication (add food-grade lubricant once a week).
During production: monitor the oil temperature (hot press ≤ 120℃, cold press ≤ 60℃).
After stopping the machine: clean the residue in the press chamber (use soft brushes to avoid hard objects scratching).
Quarterly maintenance: replace the worn out press bar (check every 500 hours).
2. Upgrade and cost reduction strategy
Internet of Things (IoT) modification: install temperature sensors (real-time warning of abnormal working conditions, reduce downtime losses).
Waste utilization: oil cake can be processed into feed (e.g. peanut cake protein content of 40%-50%).
V. Market Trends and Entrepreneurial Advice
1. Emerging demand:
Health concept to promote the growth of walnut oil, flaxseed oil demand (average annual growth rate of more than 15%).
The emergence of community oil workshop model, can be combined with “freshly squeezed and sold” to enhance the premium (gross margin of 40% -60%).
2. Location and compliance:
Avoid residential buildings (risk of noise complaints) and prioritize industrial land.
Apply for food production license (SC certification), need to be equipped with laboratory testing equipment.
Opening an oil mill is not only about equipment procurement, but also a deep insight into local consumer demand. It is recommended that entrepreneurs first research the distribution of competing products within 5 kilometers around the differentiated selection of the main oil products (such as the main camellia oil or high oleic rapeseed oil), and then through the combination of equipment to build competitiveness.
gao
Henan Zhongrui Grain is a high-tech enterprise specializing in the research, development, manufacture and sales of oil press equipment, and has been deeply engaged in the field of oil processing for more than ten years. The company integrates design, production and testing, and its products cover screw oil press, hydraulic oil press, automatic refining production line, etc., which are suitable for rapeseed, peanut, soybean, sesame and other oilseeds, and help customers to realize efficient, energy-saving and environmentally friendly oil and grease production.
