Paddy Dryer

The dryer of the product series, the third generation dryer of  low temperature sweat steaming, is the first in the world.

Relying on the strong technical force of the company, CLJ dryer has successfully developed three generations of dryers: the first generation of ordinary dryer is stable and reliable; The second generation of "three-stage two-sided drying" dryer, invention patent; The third generation "low temperature sweat steaming" dryer is an international initiative and patented invention.

The three-stage two-sided drying structure (a patented technology that has been verified by drying rice). For the grains in the same vertical grain channel, the hot air movement direction of the upper drying section is opposite to that of the lower drying section, and the drying area increases by 40%. When the rice passes through the upper drying layer, it absorbs more heat and enters the middle slow cooling layer for a few minutes to transfer the heat to the rice, The water in rice migrated outward along the capillary network to reduce the temperature and water difference in rice particles; Then it enters the lower drying layer and is dried by reverse hot air, which improves the uniformity of grain drying and reduces the waist burst rate. The ratio of drying time to slow drying time in each drying cycle is increased by 40%, and the drying speed is increased by 20% ~ 30% on the basis of ensuring the drying quality.

With the combination of high wind diagonal flow fan suction and spray, the grains in each drying channel are more evenly winded and heated, with higher drying uniformity and efficiency, good drying quality and no decline in germination rate.

Inclined chute is used at the top of the tower to directly feed the material to the uniform tray at the top of the silo, and large cone bucket and chute discharge and circulation structure are adopted below the drying section. The advantages are: ① the uniformity of the material layer on the tower top is high. ② It can drain the valley at the outlet, which is fast. ③ The friction and extrusion of grain by the upper and lower augers are eliminated, and the grain crushing rate and waist burst rate are reduced; Two moving components are reduced and the mechanical reliability is improved. 
 

The low-speed large dustpan elevator is adopted, and the anti crushing device is added at the base of the elevator, so the grain crushing rate is lower.
 

Humanized operation: the control system has high degree of automation, stable and reliable performance, simple and easy operation, and has remote service function, which effectively ensures the normal use of the dryer.

1) A material level sensor is installed on the upper part of the bin body to control the proper capacity of wet grain entering the bin and prevent the machine from being blocked. 2) A temperature sensor is installed in the hot air duct to control the hot air temperature entering the drying section within a safe setting range to avoid grain overheating and waist burst.

3) A temperature sensor is installed at the end of the drying layer to control the grain temperature within the set safe temperature to avoid grain overheating and waist burst.

4) An automatic grain moisture detector is installed under the shifting roller to control the grain to automatically stop drying after reaching the set moisture target value, so as to ensure that the grain is not dried or under dried.  

5) A sensor is installed to detect the operation of the shifting roller. If it is blocked or stalled, it will stop the machine to avoid damaging the moving components.

working principle:

The "low-temperature sweat steaming" dryer borrows the "sweat steaming principle" and adopts thermal insulation and moisture retarding. The retarding time of each drying cycle is as low as about 25 minutes, which has high retarding efficiency. The saved retarding time is converted into thermal insulation and moisture drying, which greatly improves the drying efficiency, achieves low-temperature drying and improves the quality of dried grains.

Product advantages:

The drying quality is better and the efficiency is higher, and the taste value and processing performance reach the index of natural drying.

It adopts the patented technology of segmented drying, heat preservation and moisture retention and drying, which is suitable for cross flow or mixed flow dryer. The grain is contacted with warm and humid hot air with wet steam (38 ℃ ~ 45 ℃) in the upper tassel layer to absorb heat, keep warm and moisturize the tassel, and greatly improve the tassel efficiency; The upper drying layer and the middle drying layer are in contact with the warm wind with wet steam to absorb heat and keep warm, moist and dry; Heat preservation and moisturizing in the middle layer; The lower drying layer contacts with low-temperature hot air (45 ℃ ~ 55 ℃), absorbs heat and discharges moisture for drying. The temperature difference inside and outside the grain is small, the capillary drainage channel is unobstructed, the internal and external water gradient is small, the internal thermal stress is small, the quality of the grain after drying reaches or is better than the industry standard, and the edible taste of rice reaches the level of drying. The drying efficiency can be increased by more than 50% compared with the ordinary cross flow batch circulation grain dryer.

The patented technology of three-stage two-sided drying is adopted, which is suitable for cross flow dryer. For the grains in the same vertical grain channel, the hot air movement direction of the upper drying section is opposite to that of the lower drying section. The grains are in contact with the warm hot air in the upper drying layer to absorb heat and keep warm, moist and dry; Heat preservation and moisturizing in the middle layer; The lower drying layer is dried by reverse low-temperature hot air (45 ℃ ~ 55 ℃), which significantly improves the drying uniformity, reduces the waist burst rate, and improves the drying efficiency by 20% ~ 30%.

High drying efficiency, low exhaust gas temperature and energy saving. compared with the ordinary cross flow grain dryer, the fuel cost is saved by more than 30%.