We provides intelligent soybean oil processing and soybean by-product deep processing solutions covering the entire supply chain – soybean pre-treatment workshop equipment, soybean embryo leaching workshop equipment, soybean crude oil refining workshop equipment, soybean oil dewaxing, soybean protein isolate, soybean protein concentrate, soybean lecithin production line.

Magnetic separator: adopts magnetic force to remove metal impurities by using the magnetic difference of various ores or materials, the metal impurities are usually nails, small iron wire, etc. Removal of metal impurities avoids the abrasion on the machine in the subsequent work.

Vibrating cleaning screen: The raw material may contain soil, leaves, stems and other ball impurities, which need to be cleaned up before the subsequent process. High-frequency vibration equipment can effectively remove impurities by using differences between oil and impurities in particle size, with the help of the relative movement between impure oilseed and sieve surface, finally, the impurities larger than or less than oilseed can be removed through the sieve hole. This kind of cleaning sieve is suitable for medium and large factories.

Soybean Crushing
After cleaning, the soybeans are sent to the crushing section, the main purpose is to crush the soybeans and separate the soybean skins from the bean kernels.

toothed roll crusher
Generally, soybeans are required to be broken into 4 to 8 valves, and the powdery degree (when crushed beans passing through 20 meshes screen) is less than 10%. The crusher is preferably a toothed roll crusher with cutting, impacting and bending effects. YPSG series toothed roll crusher is mainly used for crushing such large granular material like soybeans, so as to produce the excellent embryo and improve the yield. The machine has the characteristics of small noise, high output, uniform crushing granularity, low power consumption, small footprint, simple structure, flexible and reliable, convenient maintenance and so on.

Purposes of crusher
Crushing makes the oil material with a certain granularity to facilitate compact rolling.
Crushing increases the surface area of the oilseed, which is conducive to the transfer of temperature and moisture in the softening process of the oilseed and ensure the softening effect.
The seeds are crushed into small granules, which is good for the next oil press section.

Soybean Softening
Softening is through the adjustment of oilseed moisture and temperature to improve the elasticity of seed so that it has the best conditions for rolling. Softening is mainly used for seeds with low oil content, low water content, poor physical properties and hard texture. Soybeans have low oil content and poor plasticity, which need to be softened before rolling. Softening temperature should be based on the level of soybean moisture. When soybean moisture is 13%~15%, the softening temperature is usually controlled at 70~80℃, and the softening time is 15~30 minutes. The commonly used softener for soybeans is a horizontal softening pot, which has a better softening effect.

The main function of softening
It gives the soybean kernel certain plasticity and makes it easy to roll out the thin flakes when flaking.
Softening can reduce the powder degree and sticky roller phenomenon, to ensure the quality of the flakes.
Working principle of horizontal softener
The material enters the drum through the inlet, and with the rotation of the drum, the material is constantly turned over. Meanwhile, the drum is equipped with a heating tube and steam is passed through the tube, the material is heated, steamed and rotated at the same time. According to the softening condition of the material, the softening time of the material can be controlled by adjusting the rotating speed of the rotary drum to optimize the softening effect.

Features of horizontal softener
The rotation of the horizontal softening pot makes the material turn over more evenly, and without dead angle. With the improvement of avoiding the dead angle of layer softening pot, which causes the phenomenon of burnt paste, the horizontal softener can soften the material evenly and thoroughly.
The horizontal softener avoids the abrasion of the scraper and heating layer, so the equipment has long service life, low failure rate and low maintenance cost.
Because of its unique structure, the volume of horizontal softening pot is much smaller than that of layer type, the arrangement of it in workshop is easier, the area of occupation is small, and the investment of equipment is greatly reduced.

Soybean Rolling
Soybean rolling is the process of using the mechanical function to roll the oilseed from the granular to flake.
1.4.1 Purpose of soybean rolling
The purpose of rolling is to destroy the cell structure of oilseed, increase the surface area of seed and shorten the distance of oil flowing out, which is beneficial to the extraction of oil. In order to ensure the quality of rolled flakes, the moisture and temperature of materials before rolling should be strictly controlled.

Soybean rolling equipment structure
Feeding mechanism: keep flowing and distributing uniformly
Roller: main working part
Distance adjusting device: spring type, lever type, hydraulic type
Baffle and scraper
Transmission device

Soybean Extruding

Soybean extruding is the process of using extrusion equipment to break through the crushed, rolled soybean into porous, expanded granular material. Extrusion is a kind of high temperature and short time processing. At present, the commonly used soybean extruding machine is low moisture single-screw extruder, and the material is extruded by heating, pressing, gluing and vacuum extrusion. Generally, extrusion temperature can reach 110~200℃, and the residence time in the extruder is for the l~3 minutes.

Soybean oil leaching: Pre treated soybean cake is subjected to hot fresh solvent countercurrent circulation spray extraction in the extractor, achieving separation of oil and meal. During the extraction process, the characteristic of oil and fat being soluble in solvents is utilized to achieve the transfer of oil and fat from the solid phase to the liquid phase. The main driving force for mass transfer is the concentration difference of oil in the solid-liquid phase, which is achieved through two methods: molecular diffusion and convective diffusion.
In the production process of soybean oil, leaching is an important technique. The pretreatment process of leaching method includes steps such as cleaning and removing stones, crushing, softening, rolling, drying, and leaching. This process can efficiently extract oil from soybeans and has the characteristics of environmental protection and energy conservation.
The leaching system adopts a unique exhaust gas absorption system, which can effectively absorb exhaust gas. At the same time, the energy-saving design enables multiple uses of heat energy, significantly reducing the amount of steam used. These characteristics make the leaching method widely used in soybean oil production.

Cold Pressing
Today, the soybean oil is divided into cold pressed oil and hot pressed oil. The cold-pressed soybean oil has a lighter color and a lighter raw smoky taste. The hot-pressed soybean oil has high oil yield due to the high-temperature treatment of the raw materials, but it has a darker color and a stronger green bean odor. Therefore, the commonly used oil screw pressing method is cold pressing: the physical pressing method has irreplaceable technological advancement for the pursuit of green, authentic, healthy food. In order to achieve additional oil recovery, the seed material must be subjected to a longer retention time of high pressure in the screw press. Higher pressure is mainly achieved by lower seed moisture, resulting in high friction in the press. Because of the mechanical strength, the maximum diameter of the press cage is determined. The higher the pressure, the more limited the capacity of the press is. Moreover, the longer the retention time is required, the lower the shaft speed is required. This further limits the capacity. Therefore, the cold press is characterized by a capacity of only 1/10 of the capacity of the modern pre-pressing machine. But cold press machine can screw out 80~90% oil from seeds. This means that the total remaining oil content in the full-pressed cake is around 10~20%.

cold pressing machine
cold press is a new generation of spiral oil press designed for the cold pressing of various oils, especially suitable for mechanically squeezing organic plants and high value-added commercial crops. The cold pressing machine is suitable for squeezing soybean, rapeseed, peanut, etc., Lyzx24 pressing machine could be equipped with single-screw or twin-screw structures. Based on the single-screw press, a twin-screw cold-pressing machine is developed with the improvements of superior mechanical properties and high oil production rate and optimized stamping process, which produces high-quality oil and cold-pressed cakes with high efficiency. If the seed has high oil content, it should be added double press to obtain maximum yield.

Cold pressing features
The pressing temperature is low, the oil yield is high, the residual oil is low, the cake protein is less denatured, the processed oil color is relatively shallow with good quality and rich nutrition, which meets the oil standard on the international market.
The cold pressing machine is suitable for squeezing soybean, rapeseed, peanut, teaseed kernel, sunflower seed kernel, cottonseed kernel, etc., widely applicable and multifunctional.
Lyzx24 pressing machine is equipped with temperature and moisture control devices, easy operation.

Superfine Fragrant Soybean Oil Refining Process

This workshop adopts the production technology of batch refining. According to the type and quality of the crude oil, the process parameters are adjusted and different refining methods are selected to produce the first and third-grade oils. The process equipment we provide has the following features:

Flexible and convenient adjustment system, slight changes in raw material quality can still be normally produced.
Maximum heat recovery, significant energy savings.
The fully enclosed operating system avoids the oxidation of oil and ensures the high quality and stability of the products.
The use of advanced physical refining processes has effectively increased the refining rate. At the same time, the amount of sewage and the sewage treatment costs are greatly reduced.