Expanded food forming processing equipment

Abstract

The invention provides expanded food forming processing equipment, comprising feeding devices (20), screw extruders (10), an extrusion die (40), cutting devices (30), rotary motor boxes (50), a coating device (60) and a conveyor belt (70) in sequence, wherein the coating device (60) is a vertical liquid film coating device, comprising an upper oil storage tank (61), a lower oil storage tank (62), an oil pump (69) and an oil transport pipeline (68); the middle part of the coating device is provided with a hollow coating frame (64); and liquid stream (67) formed by a plurality of tightly arranged oil nozzles (66) at the top of the coating frame (64) forms the liquid film for coating the surfaces of the materials passing through the coating frame. By coating oil (mainly all kinds of edible oil, especially soybean oil, olive oil and other vegetable oil) on the extruded and cut products, the equipment ensures the products to have better integral shape before being dried and can effectively prevent cracking and breaking caused by instant high temperature in the predrying process.

Description

technical field [0001] The invention relates to a puffed food forming processing equipment, in particular, it uses a screw extruder and matching extrusion, cutting, molding and coating devices to process pre-mixed rice noodles or dough, which belongs to food processing technology field. Background technique [0002] With the increasing requirements for food nutrition, cereal products with various complex nutrients and their production methods are also developing rapidly. From the early acid pre-steaming process, direct soaking method and coating method, etc. Up to now, it is relatively complete: from grain crushing→pretreatment→mixing with nutrients→extrusion→cutting and forming→drying→screening→rice blending according to the proportion, and finally obtain the technological process of nutrient-enhanced compound grains. [0003] The extrusion-cutting step is an important link in the production process. Generally, a single-screw or twin-screw extruder is used to extrude the h...

AI Technical Summary

Problems solved by technology

[0008] 1. The products obtained by traditional extrusion and cutting equipment are directly heated and dried. However, in the drying step, the product surface is cracked or crushed due to the sudden dehydration of the product containing moisture, resulting in a decrease in the yield

[0009] 2. It is difficult to greatly improve the output and productivity of traditional extrusion molding equipment

[0010] 3. The screw of the traditional screw extruder is directly placed in the cavity with an oval or circular cross-section. During the re-extrusion and conveying process, the material tends to accumulate in some parts, thereby reducing the extrusion effect

[0011] 4. There are often accumulations in the screw cavity, and these accumulations that have not been fully squeezed for a long time will condense into blocks after a period of time, which will affect the overall product output efficiency and product uniformity, and need to be cleaned frequently

However, the screw replacement process of the traditional twin-screw extruder is difficult, and after the shutdown, the screws will still produce mechanical rotation due to the interlocking structure, which is likely to cause accidents

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