Extruder parameter reference for making better products

Puffed food refers to a large class of food processed with grain flour, potato flour or starch as the main material and processed by extrusion, frying, sand frying, baking and other puffing technologies. It has the characteristics of various varieties, crisp texture, delicious taste, convenient eating, and easy digestion and absorption of nutrients. For food, whether it is human food or animal food, the selection of processing conditions may destroy the nutrients contained in food raw materials. Therefore, the retention rate of nutrients after food processing is a factor that should be considered.
Extruded puffed food refers to the puffed food made by crushing, mixing, adjusting humidity and feeding the raw materials into the extruder. The material is cooked at high temperature in the extruder and passed through a specially designed die hole. In actual production, it is generally necessary to bake or fry the extruded food to reduce the moisture content of the food, prolong the storage period of the food, and obtain a good flavor and texture of the food; Requirements for extruders, prolonging the life of extruders, and reducing production costs. The general technological process of extruded puffed food includes: raw materials→mixing→conditioning→extrusion cooking, puffing, cutting→baking or frying→cooling→seasoning→weighing and packaging. Specifically, various raw materials with different proportions are fully mixed in advance, and then sent to the extruder, and an appropriate amount of water is added to the extruder, and the total water content is generally controlled to be about 15%. The screw speed of the extruder is 200-350rmin, the temperature is 120-160°C, the maximum working pressure in the machine is 0.8-1mpa, and the residence time of food in the extruder is 10-20s. After the food passes through the die hole, the volume of the food expands rapidly due to the rapid escape of water vapor. At this time, the moisture in the food can drop to 8% to 10%. In order to facilitate storage and obtain a better flavor texture, it needs to be baked, fried, etc. to reduce the moisture content to below 3%. In order to obtain puffed food with different flavors, seasoning treatment is also required, and then under low air humidity, the puffed and seasoned product is cooled by a conveyor belt to remove part of the water (currently, the general finished product cooling and packaging workshop has air conditioning equipment) and then immediately for packaging.

Quality assurance:

1. After the installation of the equipment, the operator designated by your company shall be provided with free guidance and training, so that they can master the operation method and general maintenance of the equipment.

2. From the date of acceptance, delivery and use of the equipment, we will provide one-year free warranty for the products (including the cost of natural damaged parts. If the damage is caused by improper operation of your company personnel, only appropriate material fee will be charged after negotiation). After the expiration of the warranty, our company provides warranty for the products, only charging the appropriate cost, free of labor costs.

3. In order to ensure that your company's equipment to achieve the ideal operation effect, but also to save our company's maintenance costs, within the warranty period to ensure that the regular dispatch of professional and technical personnel to overhaul and maintenance products.

4. When the equipment fails and we receive your notice, we will make timely transfer arrangements and rush to the site for maintenance to ensure the normal operation of the equipment. Jinan DAYI Machinery Technology Co., Ltd. is located in the beautiful city of Jinan. The company has been engaged in the research and development of food production line machinery and production technology for a long time, the company's standard production technology, the operation concept of automatic control, and the focus on the development of stable and reliable production equipment. The company's designers have long-term experience in design, development, debugging and production, and have responsible on-site engineering personnel engaged in production and debugging work, and can provide you with standardized design, production, and debugging processes.