Overview:
The double-chain low-temperature noodle production line manufactured by our company is the third-generation new noodle production line marked by vacuum and noodle technology and photoelectric control technology, which represents the higher technical level of the domestic industry. The equipment of the production line is well made, the whole process is highly automated, the operability is strong, the production continuity is good, the product quality is excellent, the yield rate is high, and the energy consumption is low.

1. Powder supply system:
　　
Through the automatic powder supply system, the raw material flour is transported to the metering device (generally equipped with batch weighing) in a certain way (pneumatic conveying or mechanical conveying). The flour after weighing and measuring is fed alternately to two dough kneders through a flour auger. The start and stop of the whole powder supply system are automatically controlled by the working signal of the dough mixer. This not only greatly reduces the labor intensity, improves the production efficiency and the continuity of the production process, but also improves the production environment.

2. Surface mixing, curing and rolling:
　　
The dough mixing process includes a brine stirring device (liquid distribution tank), a quantitative water supply device and two dough mixing machines. The water supply in the whole dough mixing process is accurate, the system is continuous, the degree of automation is high, and the dough made is of excellent quality. In particular, if the patented product-HWJZ series vacuum kneading machine developed by our company is matched, the whole kneading process is carried out in a fully enclosed vacuum state, and the water added during kneading is not less than 30% of the total flour. The protein molecules of wheat flour fully absorb water in the shortest time, the dough has large water absorption, low temperature rise and sufficient gluten network formation, thus making the prepared flour smooth and strong, and not mixed with soup during cooking. In addition, the equipment can automatically fill water, automatically open and close the cover, automatic unloading, automatic pumping, vacuum. The dough mixing speed is frequency conversion double speed (high speed gouache mixing and low speed dough kneading), and the speed is adjustable, and the dough mixing time can be set according to the process needs. All operating procedures and steps can realize automatic control of PLC program.
After 5-10 minutes of ripening, the dough made of dough is automatically fed to the composite calender, and the dough sheet formed by composite calendering enters the dough sheet cooking machine after 10-15 minutes of ripening, and then is continuously calendered to form dough sheets of required thickness, and then enters the drying room by cutting strips, picking bars and shelving. The whole process is fully automatic and intelligent control through photoelectric switch and frequency converter, and the operation is simple. Moreover, the supporting equipment is reasonable in design, reliable in quality, high in safety performance and good in process effect. The calendering ratio of the calendering equipment is reasonable in design. The composite part is equipped with wire drawing rollers, which have good feeding effect. The other parts can be equipped with flat rollers or corrugated rollers according to the process. The whole calender is equipped with multiple emergency stop buttons and safety protection gear rods, which effectively ensures the safety of the operator. The selected motors are hard tooth surface reduction motors with low noise, long service life.

3. Drying:
　　
After the noodles enter the drying room, they are first cut by the cutting machine, and the resulting wet noodle head can be continuously and evenly transported to the single-axis U-shaped cooking machine through the wet noodle head recovery device, which can not only reduce the number of workers and labor intensity, but also realize the timely return of the wet noodle head to the machine, so as to avoid water loss due to long interval, thus affecting the process effect and product quality.
The drying system designed by our company according to the user's plant and site conditions mainly has the following characteristics;
1. Adopting single-row double-chain type moving mode, C- shaped steel translation conveying mechanism; Not only is the strength high, but also the transmission chain is not exposed, and the sanitary condition is good.
2. The main transmission mechanism is single-row double-chain track and double-circuit engineering plastic runway; Reduce the friction force and move more smoothly. 3. Frequency conversion speed regulation, rod distance size can be adjusted according to the need to adapt to the production of various specifications of noodles process requirements.
4. It is divided into four temperature zones, the effective drying length is about 400-450m, the drying time is 5-5.5h, and the temperature and humidity can be automatically controlled, which not only reduces the difficulty of operation, reduces the impact of human factors on product quality, but also improves product quality and yield, and reduces energy consumption per unit product.
5. The heating and moisture exhaust system can realize automatic control: the heating system sets the temperature range according to the temperature zone, and the sensor in the drying room feeds back the collected data to the control system, and the control system can automatically adjust the opening and closing of the temperature control valve; The moisture exhaust fan can also adjust the fan speed through the frequency converter according to the humidity data in the drying room to realize automatic control.
6. In addition, our company can reasonably design the tide drainage and air supplement system according to the situation of the plant to ensure timely tide drainage and sufficient air supplement.

4. Cutting and packing:After the dried noodles are cut off by the cutting machine, the finished noodles are transported to the weighing packaging machine through the noodle conveying equipment. The crushed noodle head can be initially crushed by the dry noodle head crushing device, and then transported to the crushed noodle head crusher through the wind transport collection system. After crushing, the powder returned to the machine can be added in proportion to the powder supply system.