Thermal Oil-Heated Plywood High-Efficiency Mesh Belt Drying Machine

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: MH-MD410
• Type: Veneer Dryer Machine
• Automatic: Automatic
• Certification: CE, ISO
• Name: Veneer Dryer Machine
• Width: 4500mm
• Infeeding Length: 3m
• Outfeeding Length: 3m
• Outfeeding Parallel Belt Conveyor: 6m
• Transport Package: Plastic Film and Wooden Box
• Trademark: MINGHUNG
• Origin: China
• HS Code: 841939
• Production Capacity: 3000sets/Year
• Package Size: 3200.00cm * 750.00cm * 470.00cm
• Package Gross Weight: 90000.000kg

Product Description

Thermal oil-heated Plywood high-efficiency mesh belt drying machine

This Thermal Oil Heated High-Efficiency Mesh Belt Plywood Veneer Dryer is a high-productivity, energy-efficient continuous drying solution designed for the modern plywood industry. Utilizing high-temperature thermal oil as the heat source, the equipment delivers stable and uniform hot air inside the drying chamber through a precise circulation and heat exchange system. Carried by heat-resistant stainless steel mesh belts, the veneer sequentially passes through preheating, uniform drying, and cooling/setting zones, achieving a rapid and gentle drying process. It is particularly suitable for drying various fast-growing wood veneers (such as poplar, eucalyptus), effectively handles high initial moisture content, ensures uniform final moisture content, and yields flat veneer with low breakage rates. It is a core equipment for enhancing plywood quality and production efficiency.

Working Principle

The dryer operates on the principle of combining hot air convection with mesh belt transportation. High-temperature thermal oil, heated in an external system (e.g., thermal oil boiler), is pumped to heat exchangers (radiators) inside the dryer. Clean air, driven by circulation fans, passes over the hot exchangers and becomes the drying medium — hot air. This hot air is then evenly and forcefully blasted onto the upper and lower surfaces of the moving veneer through specially designed air ducts and nozzle systems. The high-velocity airflow effectively penetrates the saturated vapor layer on the veneer surface, significantly enhancing heat and mass transfer efficiency. Simultaneously, a heat-resistant mesh belt conveys the veneer at a constant speed through the enclosed drying tunnel, sequentially completing preheating, main drying, and cooling stages, ultimately discharging flat veneer with the required moisture content.

Specification

Parameter	Value
Heating Sections	9 sections
Heating Motors	11kw*9pcs
Cooling Sections	1 sections
Cooling Motors	4kw*2pcs
Conveyor Motors	7.5kw*4pcs
Total power	137kw
Conveyor Speed	1-20m/Min
Heating medium	Oil/Steam
Drying temperature	150-180℃
Veneer Thickness	1-3mm
Original Veneer Humidity	60%
Dryed Veneer Humidity	5-10%
Drying capacity	55-60m³/20h

Core Components

    1.  Thermal Oil Heating & Circulation System: Includes thermal oil heater, hot oil pump, expansion tank, pipelines, and control system, providing a stable high-temperature heat source.

    2.  Heat Exchange & Hot Air Circulation System: Consists of steel-aluminum composite radiators, high-power heat-resistant circulation fans, air plenums, ducts, and injection nozzles, responsible for generating and uniformly distributing drying hot air.

    3.  Mesh Belt Conveying System: Includes drive unit, stainless steel mesh belt (common mesh sizes: 20mmx25mm or 35mmx35mm), tensioning and aligning devices, responsible for smooth veneer conveyance.

    4.  Drying Chamber Main Body: Modular insulated enclosure, internally divided into feeding zone, heating/drying zone, cooling zone, and discharge zone, featuring good sealing and thermal insulation.

    5.  Cooling System: Located at the end of the drying chamber, composed of cooling fans and ducts, used to rapidly lower veneer temperature, stabilize its moisture content, and prevent moisture regain.

    6.  Automated Control System: Typically employs PLC and touchscreen HMI, integrating temperature and speed regulation (variable frequency control) for automated process management and monitoring.

Details Show

Advantages of MINGHUNG Dryer

       High Efficiency & Energy Saving: Thermal oil has high heat capacity and stable temperature, offering high heat exchange efficiency; the enclosed circulation design of the equipment ensures high thermal energy utilization, making it more energy-efficient compared to traditional methods.

       Superior Drying Quality: High-speed, uniform hot air jetting ensures even heating of the veneer, effectively preventing warping and cracking, resulting in consistent final moisture content (can achieve 10%±2%) and flat, smooth veneer.

       High Capacity & Continuous Operation: Continuous mesh belt conveyance allows seamless integration with upstream and downstream processes, enabling 24/7 uninterrupted production with large drying capacity (e.g., up to several cubic meters per hour).

       Stable & Reliable Operation: Core components such as fans and mesh belts are made of heat-resistant materials and/or branded products, featuring long design life, low failure rates, and easy maintenance.

       High Automation: PLC automatic control allows for adjustment of belt speed and drying temperature based on veneer thickness and initial moisture content. It is easy to operate and saves labor.

       Flexibility & Safety: The thermal oil system operates at atmospheric pressure, making it safer than steam systems which operate under pressure. It offers a wide drying temperature adjustment range (typically up to 150-190°C), adaptable to different wood species and process requirements.

 

Packing & Delivery

Company Profile

Shandong MINGHUNG Wood Based Panel Machinery Co.,Ltd

We are  China factory and manufacturer of full sets of Plywood machinery and Veneer machinery. 

Machines include:Veneer production line(Log debaker,Veneer peeling machine, Log loader,Automatic stacker),Blade sharpener,Veneer patching machine,Veneer dryer machine(Veneer roller dryer, Veneer mesh dryer, Veneer press dryer), Veneer gluing machine,Plywood lay-up machine, Veneer jointing machine, Plywood cold press, Hot press machine,Plywood edge trimming cutting machine, Sanding and calibrating machine, Plywood overturn machine, Lift table, and so on.

FAQ

Q1: What type of wood veneer can this dryer handle?

A1: This equipment is particularly suitable for drying veneer from fast-growing wood species, such as poplar, eucalyptus, and pine. It effectively addresses the drying challenges associated with their high initial moisture content and tendency to warp. By adjusting the process parameters, it can also be used for drying veneer from other wood species.

 

Q2: What are the advantages of thermal oil heating compared to steam or hot air furnace heating?

A2: The main advantages are: 1) Higher and More Stable Temperature: Thermal oil can reach temperatures above 300°C, providing a stable, high-temperature heat source for efficient drying. 2) Lower Pressure and Safer Operation: The system operates at atmospheric or low pressure, making it safer than high-pressure steam boilers. 3) High Thermal Efficiency: The closed-loop circulation minimizes heat loss, potentially offering advantages in overall operating costs.

Q3: What is the production capacity of the equipment? Is the energy consumption high?

A3: Production capacity depends on the specific model (e.g., length, number of layers). For example, a 20-meter long single-layer dryer might have a capacity of about 0.5-1 m³/h, while a three-layer dryer could reach 5 m³/h or more. This machine features enclosed hot air circulation and high-efficiency insulation, allowing for heat reuse. Its energy consumption is significantly lower compared to traditional open-drying systems.

Q4: How is the quality of the dried veneer guaranteed?

A4: The equipment ensures quality through several design features: Uniformly distributed high-speed air nozzles guarantee even heating on both the upper and lower surfaces of the veneer. Precisely adjustable mesh belt speed and drying temperature prevent cracking caused by overly rapid drying. An independent cooling zone allows the veneer to stabilize and set before discharge, resulting in uniform moisture content and excellent flatness.