What is a Vacuum Harrow Dryer?
A vacuum harrow dryer is a horizontal batch drying machine equipped with a stirring device (harrow) inside a sealed chamber. It operates under vacuum conditions, which significantly lowers the boiling point of water or solvents, allowing materials to dry at lower temperatures.
The material is fed into the dryer through the top inlet of the chamber. Under the continuous agitation of the rotating harrow blades, the material moves back and forth axially, while the surface in contact with the inner wall of the shell is constantly renewed. Heat is transferred indirectly through steam within the jacket, and the uniform mixing of the harrow blades, combined with the crushing action of the grinding rods, accelerates moisture evaporation from the material. Under the vacuum system, the vaporized moisture is drawn out, passing through a dust collector and condenser before being discharged via the vacuum pump outlet.
Your Professional Vacuum Harrow DryerManufacturer in China
When it comes to reliable, high-performance drying systems, Bosiway stands out as your ideal partner. Here are four key reasons why you should choose us as your vacuum harrow dryer Manufacturer:
- Industry-Leading Expertise
With over 20 years of experience, Bosiway delivers customized Dryers designed for efficiency and reliability across diverse industries.
- Cutting-Edge Technology & Innovation
Our patented designs and cutting-edge heat transfer systems ensure optimal performance, low energy consumption, and consistent product quality.
- Competitive Pricing with Global Standards
As a leading Chinese manufacturer, we provide high-quality Dryers at affordable prices while meeting global standards.
- Full After-Sales Support
Enjoy 24/7 technical support, training, and maintenance services to keep your system running smoothly for years.
Our Services Always Go Extra Mile
Committed to Your Success
At Bosiway, we believe in building lasting partnerships. Our commitment to excellence extends far beyond installation. With ongoing maintenance, custom solutions, and rapid response service, we ensure your systems are always running smoothly—no matter the challenge.
Full-Cycle Support, Anytime You Need It
At Bosiway, our services don’t stop at equipment delivery. We go the extra mile by providing comprehensive support, from custom system design to on-site training and 24/7 customer service. We’re with you every step of the way to ensure your system performs at its best.
Your Long-Term Success Is Our Priority
We understand that great service is about more than just the initial sale. At Bosiway, our dedicated team provides tailored solutions, timely support, and proactive maintenance to guarantee your Paddle Dryer stays in peak condition, maximizing productivity and efficiency for years to come.
FAQs
A vacuum harrow dryer is a horizontal batch drying machine that uses a sealed chamber under vacuum conditions. Inside, rotating harrow arms continuously stir the material while heat is transferred through the chamber jacket and blades. This ensures efficient drying at lower temperatures by reducing the boiling point of water or solvents.
It is ideal for drying heat-sensitive, paste-like, or slurry materials. Common applications include pharmaceuticals, chemicals, food ingredients, and agricultural products that may degrade or oxidize under high temperatures.
Low-temperature drying under vacuum conditions
Continuous agitation prevents clumping and ensures uniform drying
Effective for thick, viscous, or sticky materials
Enables solvent recovery and environmental protection
Unlike conventional dryers that rely on high heat and air flow, a vacuum harrow dryer combines vacuum technology with mechanical agitation. This makes it more effective for specialty materials that require gentle drying or cannot tolerate oxidation.
Yes. Bosiway offers end-to-end service, including equipment installation, operator training, spare parts supply, and long-term maintenance to maximize performance and extend equipment life.