food extruder machine-manufacture,factory,supplier from China

The screw extruder was first used in the plastics industry, and its theoretical research started earlier, forming a variety of mathematical models used to describe the basic principles of flow and heat transfer in the extrusion process, using these models to achieve accurate extrusion machine simulation Design. The application of extrusion technology in the food industry is slightly later than that in the plastics industry, which is mainly due to the complexity of food raw materials.

The extruder has the functions of compression, mixing, kneading, melting, puffing and molding. The cavity of the extruder can be divided into 3-5 zones. Each zone can be heated by steam or electricity, or by extrusion friction, so as to achieve the purpose of cooking the material. Under the action of high temperature and high pressure in the cavity, the starch Gelatinization, protein denaturation. When the material passes through each zone of the extruder cavity, soluble flavor substances and pigments can be injected into the material through the cavity under high pressure.

Feed extruder is a single screw extruder. Mainly used for food puffing, livestock feed or used for puffing single raw materials, but also as a plant oil and drinking wine production of raw materials in the pre-place. Twin-screw extruding extruder, mainly used for the production and processing of high-grade aquatic products, pet materials, especially the processing of viscous materials.What are its characteristics?1.

Twin screw extruder is developed on the basis of single screw extruder. Two screws are placed side by side in the barrel of the twin screw extruder. According to the meshing degree of the two screws can be divided into mutual meshing type and non-meshing type. According to the rotation direction of the two screw shafts, it can be divided into reverse rotation type and co-rotation type.(1) meshing twin screw: Because the meshing gap of the meshing screw is very small, the material has the ability of forced conveying, not easy to produce backflow, leakage phenomenon.

When operating a twin-screw extruder, it should be maintained on time. The maintenance process is carried out after the twin-screw extruder runs continuously for 2500-5000h and shuts down. The screw is extracted to inspect, measure and identify the wear condition of the most critical components, replace the components that have reached the specified wear limit as soon as possible, and repair the damaged components . The maintenance standard of the reducer of the twin-screw extruder is the same as that of the ordinary standard reducer.

The advantages of our twin screw extruder:1. Double screw snack extruder adopts side forced feeding technology, which increases the integrity of the material and greatly increases the output. The position and shape of the feed port also have a great influence on the feed efficiency. Under the same parameters, the feed area increases and the output increases. For the same inlet area, rectangular section has greater feed efficiency than circular section. The use of side twin screw feed is also based on such a consideration.2. Twin screw extruder has strong self-cleaning ability.

Food extruder has a service life, and good maintenance measures in the process of use can ensure that the machinery can be used for a longer time.1. When it is found that the spiral groove is blocked, do not stop the machine immediately. It should run for a moment after stopping the feed, until there is a burnt taste. This can prevent the nozzle, spiral sleeve bite. If the nozzle, screw sleeve bite can not be removed, do not hit hard, it can be removed from the body, put in the fire for a moment, you can remove.2.

When the puffed and extruded food machine is operating, we must first think about a problem, that is, how to use the food extruder correctly in the process of using the machine, so I will explain the suitable processing method for novices.1. When it is found that the spiral groove is blocked, do not stop the machine immediately, it should run for a while after stopping the feeding, and then stop the machine when there is a burning smell. In this way, the nozzle and the screw sleeve can be prevented from being seized.

The control of the operating parameters of the extruder includes: control of the temperature and humidity of the raw material entering the extruder; control of the temperature and pressure of each section of the extruder; control of the maximum point of dough viscosity in the extruder; extrusion speed control of extrudate temperature and time in each section; time control when the product temperature rises to the maximum extrusion temperature and temperature control at the final outlet.In principle, the longer the dough stays in the extruder, the more energy it can absorb and the temperature w

Screw extruder is mainly used in the production of starch extruded food, protein extruded food and extruded feed in the food industry, and can also be used as a special chemical or biochemical reactor.Starch puffed foodThe starch in the grain will gelatinize (αize) under the high temperature and pressure of the extruder. The results showed that the degree of starch αization was more than 98% and the crude fat decreased by 60% or even disappeared after the puffed corn flour. Water solubility increased by more than 40%. Therefore, extruder can replace roller dryer to produce gelatinized starch.