Specially designed for paddy rice, low-temperature drying to keep good grain quality

Brand Profile

Zhengzhou Wangu Machinery Co., Ltd. is a national high-tech enterprise and one of the drafters of national industry standards for grain drying machinery. With more than 20 years of professional R&D, production and manufacturing experience in grain drying equipment, Wangu owns an elite R&D team composed of senior engineers, realizing independent research and development and whole-machine manufacturing capacity.
Our products are certified by ISO9001 quality management system, EU CE certification and national agricultural machinery promotion certificate. Wangu grain dryers are exported to more than 50 countries and regions worldwide, enjoying high recognition from overseas customers for stable operation, excellent grain quality and high cost performance.

Product Overview

WGH series mixed-flow low-temperature continuous paddy rice dryer is a high-precision grain drying equipment specially developed for heat-sensitive and crack-prone paddy rice. Adopting advanced mixed-flow drying & multi-stage tempering composite drying technology and fully-enclosed clean hot air drying system, it realizes all-weather, large-scale, automatic and high-standard drying of freshly harvested high-moisture paddy rice.
Built with heavy-duty tower steel structure and thickened anti-corrosion hot-dip galvanized steel plate, the machine features reasonable structure and stable performance. It thoroughly solves problems including paddy mildew, germination, rice cracking and quality degradation caused by open-air sunning and ordinary drying process, helping farmers, grain depots and rice mills achieve quality improvement, cost reduction and efficiency increase.

Product Properties

1. Process Property: Adopt continuous mixed-flow low-temperature tempering drying mode. Hot air crosses grain layer for uniform heat exchange. Built-in multi-stage drying and tempering sections fully release internal moisture stress of rice kernels, realizing non-destructive precise drying for paddy rice.

2. Energy Property: Adaptable to multiple heat sources including rice husk, biomass pellets, natural gas, diesel and steam. Equipped with tail gas waste heat recovery circulation system, it owns high heat utilization rate and low operation cost, fully meeting global energy-saving and environmental-friendly agricultural machinery standards.

3. Control Property: Configured with industrial PLC centralized control system and touch screen HMI, realizing automatic temperature detection, online moisture testing, air volume adjustment, automatic grain discharging and stop operation. With fault self-diagnosis and sound-light alarm function, it features high automation and easy operation.

4. Structure Property: Heavy-duty all-steel tower body, thickened hot-dip galvanized anti-corrosion material with wear-resistant and rust-proof performance. It can be installed outdoors directly without closed workshop and complex foundation, adapting well to harsh outdoor working conditions.

5. Application Property: Specially designed for paddy rice drying, also suitable for wheat, corn, soybean, rapeseed, sorghum and other crops. Widely applied to large farms, cooperatives, grain depots, rice processing plants and grain purchasing & storage centers.

Core Technical Advantages

1. Patented Uniform Mixed-Flow Air Distribution Structure
Unique bidirectional cross mixed-flow air distribution enables clean hot air to penetrate grain layer fully without dead zone and local overheating. Full convection heat exchange greatly improves drying efficiency, keeping uniform moisture content of dried paddy rice.

2. Precise Low-Temperature Constant Control Technology for Paddy Rice
Targeting heat-sensitive rice germ and endosperm, hot air temperature is controlled below 65℃, and grain temperature is strictly within 35℃. Low-temperature large-air-volume gentle drying protects rice germ and internal kernel structure, maximally maintaining grain appearance and nutritional value.

3. Multi-Stage Tempering Gradient Drying Design
Drying sections and tempering sections are arranged alternately. After each drying process, paddy rice enters tempering area for internal moisture diffusion and stress relief, effectively reducing rice cracking and broken rate, greatly improving head rice yield.

4. High-Efficiency Tail Gas Waste Heat Recovery System
Special exhaust waste heat recycling device realizes secondary utilization of drying heat energy, greatly reducing unit heat consumption. Compared with traditional dryers, energy consumption is reduced by 15%-40%, cutting down per-ton grain drying cost obviously.

5. Fully Enclosed Clean Indirect Hot Air Drying
Adopt flue gas isolated indirect heat exchange to produce pollution-free clean hot air. Smoke-fire separation avoids dust mixing and secondary grain pollution, meeting international food safety and grain storage standards.

6. Heavy-Duty Anti-Corrosion Durable Body Technology
Whole machine made of thickened hot-dip galvanized steel with outstanding anti-corrosion, rainproof and rust-proof performance. Main transmission parts adopt high-precision wear-resistant components with low failure rate. Whole service life reaches over 15 years with extremely low annual maintenance cost.

7. Industrial PLC Fully Automatic Intelligent Control
Industrial PLC touch screen supports one-key setting of standard safe moisture (12%-14℃). The machine automatically adjusts temperature, air volume and discharging speed for unattended operation. It integrates over-temperature protection, material blockage alarm, overload stop and fault self-check. Optional mobile remote monitoring and parameter adjustment realize intelligent grain depot management.

8. Strong All-Weather Environmental Adaptability
24-hour continuous operation is unaffected by rainy, snowy, frost and fog weather, thoroughly solving paddy mildew and germination problems in rainy season. Outdoor installation saves sunning yard and workshop investment, suitable for all climate regions at home and abroad.

Core Selling Points

1. Top-Grade Paddy Drying Quality
Low-temperature mixed-flow + multi-stage tempering controls rice crack rate below 1.5% and broken rate below 0.3%. Head rice rate improves by 10%-20% with full, glossy and crack-free kernels, greatly improving grain grade and selling price.

2. Large-Scale High-Efficiency Drying Capacity
Daily capacity from 100 to 120 tons with 24h continuous operation. Large moisture reduction range and fast drying speed avoid mildew and germination loss, meeting large-scale drying demand of overseas farms and grain depots.

3. Ultra Energy-Saving & Short Payback Period
Equipped with waste heat recovery system, rice husk available as free fuel. Per-ton drying cost reduces by 30%-40%, equipment investment can be recovered within 1–2 years.

4. Fully Automatic Unmanned Operation
One-key intelligent whole-process operation without special duty. One worker can manage multiple machines to save labor cost greatly. Stable running with low fault rate reduces production loss.

5. Durable Long Service Life
Heavy steel structure and galvanized anti-corrosion design are wind-resistant, rainproof and rust-proof with little daily maintenance and high utilization rate.

6. Wide Adaptability & Multi-Crop Function
Suitable for paddy rice, corn, wheat, soybean and rapeseed. Adaptable to various climates and installation conditions for global rice-producing regions.

7. Complete Certificates & Global After-Sales Service
Multiple export certificates facilitate customs clearance. We provide turnkey service including design, production, transportation, installation, commissioning and training, with 24-hour global technical support.

Applicable Customers

Large-scale rice farms & planting cooperatives
Central & local grain depots, grain purchasing enterprises
Medium and large rice processing factories
Modern agricultural industrial parks
Overseas agricultural projects & government agricultural machinery bidding projects

 ZHENGZHOU WANGU MACHINERY CO.,LTD

 Our company is founded in 1998 who specializes in the design and manufacture of various drying equipment and has   obtained a number of patents in professional drying field.Main products include grain dryers such as corn dryer, paddy   dryer,rapeseed dryer, and other dryers like tube bundle dryer,fruit residue dryer, rotary dryer, etc..

 The company has 416 employees, among them, there are 63 senior engineers.As the national standard drafter of grain   dryer  in China, our grain dryers are not only in the leading position in the grain drying industry, but also have strong   competitive strength in the world.We have established long-term stable cooperative partnership with many well-known   enterprises, such as Sinograin,COFCO, Wilmar, Heilongjiang Beidahuang Agriculture Co. Ltd., Jiusan Groupetc., with an   annual sale of more than200 sets of equipment.

Our main products are drying line of grians and oil crops(50-2000t/day):available to drycorn,wheat,paddy,soybean and ra pe seed etc,complete drying engineering of apple pomace,citrus pulp and other pomace（1-15tons/day),storehouse cassava dry ing line(100-400ton/day),complete drying engineering of alcohol lees,distilled spirits lees and brewer's spent grain(1-12 tons/day). tower grain dryer of different types,cylinder dryer of different specification for pomace, tube bundle and tube sheet dryer:10-60tons/day,coal-burning hot air furnace,rice hull hot air furnace, straw hot air furnace and marsh gas hot air furnace 0.35-11.2MW(300,000-9600,000kcal/h), grain delivery and cleaning machinery:bucket elevator,belt conveyor,screw conveyor and cleaning sieve.

Pre-sale services:

1. provide professional technical support;

2. send the product catalog and instruction manual;

3. personal call or visit is warmly welcome

Sale of services:

1. we promise honesty and enthusiasm, it’s our pleasure to serve you as you purchasing consultant.

2. We guarantee punctuality, quality and quantities strictly implement the terms of contract

3. We send engineers to install in your factory and train your works until they totally get all skills

After-sale service:

1. One year warranty and life long maintenance

2. 24 hours telephone service online

3. A large stock of components and parts, easily-worn parts.