When using the processing equipment of edible animal oil, two processes are very important. They are the processes of precipitation and filtration in the production process of the processing equipment of edible animal oil. One can precipitate the oil in the production process, and the other is the impurities in the filtering oil.
1.Precipitation in processing equipment of edible animal oil
- Precipitation principle:precipitation is based on the density of oil and impurities separate.The crude oil can sink to the bottom of oil through the time of standing.In addition, a small amount of suspended impurities and a small amount of phospholipids, proteins and starch paste can be isolated.
- Equipment and operation: oil barrel, oil pool or mailbox are used for precipitation, and their size can be determined according to the capacity.When oil that needs to be precipitated is injected into the vessel, its precipitation can be observed, and when good precipitation is considered, oil and impurities can be separated.
- Influencing factors: precipitation effect is mainly affected by temperature and time.High temperature and long time, the precipitation effect is good;When the temperature is low and the time is short, the precipitation effect is poor.According to local experience, high temperature in summer , after three days basic precipitation good;in winter, if the temperature is kept above 0 degrees, the precipitation time should be less than 7 days. In spring and autumn, both seasons can be properly mastered according to the temperature.
- Main advantages of animal oil refining equipment: first of all, high oil yield. At present, oil is extracted by pressing and spiral method in China, and the residual oil in the cake is more than 5%. Due to low temperature, high protein content in the meal is of high quality and high use value, it can be widely used in food raw materials.
2. Filtration in processing equipment for edible animal oil
- Filtration principle: the filtration is under the pressure of the pump to make the oil filter cloth, and impurities stay between the filter cloth.Filtration can reduce mechanical impurities to a small degree and remove some of the wax.
- Press filter equipment and operation: common press filter equipment has different models of frame type oil filter, matching gear pump.
- Technical features of filter press: the crude oil is filtered through the press cloth by pressure, and impurities and waxes are left on the press cloth, while the oil filter cloth is collected and set aside, so as to achieve the purpose of filtering. Main advantages of edible butter processing equipment: first of all, high oil yield. At present, oil is extracted by pressing and spiral method in China, and the residual oil in the cake is more than 5%. Due to low temperature, high protein content and good quality in the meal with high use value, it can be widely used in food raw materials.
3. Technological process of edible animal oil processing equipment
No matter using the oil press or direct and prepress leaching, the equipment used in the refining process is basically the same.
Crude oil — general refining process — filtration — hydration — deodorization — refined animal oil or, crude oil — special refining process (alkali refining — decolorization — dewaxing — decolorization) — refined animal oil.
Precipitation and filtration is a kind of intermittent work. When working, we should first install the filter cloth and then start filtration. If the requirements are met during the filtration process, the filtration can be stopped.