Expanded snacks are widely consumed. Because of the compatibility of twin screw with materials, the production line takes rice, corn, wheat, oats, flour and other cereals as raw materials. After extrusion and extrusion by twin screw extruder and extrusion from different moulds, rotary cutting, and then baking (or frying) seasoning, snacks with crisp taste and realistic appearance can be obtained. Products. Fried food production line。
The main raw materials used in puffed food and potato chips are common cereals and potatoes, and there are a few flavoring precursors. In order to make their flavor more special, it is necessary to change and enhance their flavor through flavoring. Seasoning methods can be divided into two kinds: base seasoning and surface seasoning: "base seasoning" is to add seasoning ingredients and other ingredients together, fresh potato chips can be added in the mix. In hot water, it is mainly to increase the flavor of leisure food; the so-called "surface seasoning" refers to the contact of semi-finished products with seasoning powder in the drum or conveyor belt to season, so that leisure food has a good taste and attractive aroma.
The production line of fried food mainly uses potato starch, corn starch and flour as raw materials and uses unique extrusion forming technology to produce the popular secondary extruded food with different shapes on the market. The machine production line has reasonable design, high degree of automation, accurate extrusion parameters control, and the main engine is equipped with high and low pressure screw, which increases the use range of raw materials, reduces costs and improves the quality of products. The products to be produced are spiral, shell, round tube, square tube, circle, cartoon, motion and so on.
Frier is the key equipment for food frying. According to the pressure of frying, it can be divided into atmospheric and vacuum fryers. Atmospheric fryers are generally open and widely used. According to the way of frying, they can be divided into continuous fryers and intermittent fryers. According to the liquid added in food processing, they can be divided into traditional fryers and water filter fryers.
From manual upgrading to automatic upgrading, it saves manpower; built-in pump-type oil circulation device delays oil aging and saves energy. The domestic market is becoming more and more mature. Food processing requires not only high quality and automation, but also safety, environmental protection and after-sales service.
Fried food is one of the traditional foods in our country. It is loved by people because of its crispness, delicious aroma and appetite enhancement. However, the harm of food processed by traditional frying methods and the energy and energy consumption of fryers have also attracted wide attention. Therefore, the development and improvement of frying technology and fryers should focus on solving the above two problems.
1) Green frying should be advocated to reduce the production of toxic substances such as acrylamide in fried food. Vacuum frying technology should be adopted as far as possible in frying methods; water filter fryer and vacuum fryer are the main frying equipment. In the future, the research and development of vacuum frying technology and oil-water mixed frying technology should be further strengthened, as well as the improvement of related fryers and the research and design of new practical fryers.
2) At present, most of the existing fryers are mainly in the form of electric heating, which consumes a lot of electricity (especially large continuous fryers). Today, with the increasing tension of electricity, new challenges are brought forward. In addition, most of the oil after processing is naturally cooled and needs to be re-heated in the next processing, which consumes a lot of heat energy. In the future, we should strengthen the use of electric energy, such as gas-fired fryers and coal-fired fryers. Improvement design and development of fryers with other energy sources. In the effective use of energy in frying food production line, the design of fryers should consider installing insulation devices as far as possible, so that the hot oil after processing can keep warm and reduce energy loss.