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Shandong Junxu Heavy Industry (Group) Co., Ltd.
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Shandong Junxu Heavy Industry (Group) Co., Ltd.: is a group oriented development company with three branches. It is a comprehensive, efficient, and intelligent technology enterprise specializing in the research and development, design, production, marketing, and after-sales service of large-scale dryer sets, desulfurization equipment, biogas engineering, and drying equipment. The production and manufacturing base is located in Weifang, the world kite capital, and is an advanced manufacturing ...
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Million+
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Million+
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Internal professional design team and advanced machinery workshop. We can cooperate to develop the products you need.
China Shandong Junxu Heavy Industry (Group) Co., Ltd. MANUFACTURING
Advanced automatic machines, strictly process control system. We can manufacture all the Electrical terminals beyond your demand.
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Bulk and customized small packaging, FOB, CIF, DDU and DDP. Let us help you find the best solution for all your concerns.

quality Wood Drying Machine & High Frequency Vacuum Dryer manufacturer

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High Wood Waste? Our Equipment Raises Utilization to 97%
Wood Modification Equipment: Redefine Wood Performance, Unlock Diverse Scenarios​ Wood modification equipment is a revolutionary technical device in the modern wood processing industry. It reconstructs wood structure at the molecular level through precise control of physical and chemical composite processes, enabling ordinary wood to achieve a leapfrog upgrade in performance. Its core working principle covers two major technical paths: physical modification, represented by high-temperature thermal treatment, which gradually heats wood from room temperature to 160-240℃ (precisely set according to different wood species such as poplar and pine) in a closed cavity protected by nitrogen or inert gas. Through 8-12 hours of constant temperature treatment, the hemicellulose inside the wood undergoes moderate degradation, the lignin molecular chains are rearranged, and the number of hydrophilic groups is permanently reduced. This process is like giving wood a "high-temperature exercise", keeping its moisture content in the golden range of 8%-12%, so that it can maintain morphological stability even in environments with drastic humidity changes.​ Chemical modification focuses on acetylation technology, placing wood in acetic anhydride solution and completing 3-6 hours of acetylation reaction in a reactor at 80-120℃. During the reaction, hydroxyl groups (-OH) in wood cells are replaced by acetyl groups, like covering the wood surface with a "waterproof film", fundamentally blocking the moisture absorption channel. At the same time, some equipment is also equipped with a resin impregnation system, which injects environmentally friendly resin into wood conduits through a vacuum-pressure process. The "skeleton support" structure formed after curing can increase wood hardness by more than 40%.​ It is worth mentioning that advanced wood modification equipment is equipped with a PLC intelligent control system, which cooperates with a multi-sensor array to monitor key parameters such as temperature (accuracy ±1℃), pressure (±0.01MPa), and humidity (±2%RH) in real time, and automatically adjusts the process curve. This means that the performance deviation of each cubic meter of modified wood can be controlled within 5%, completely solving the industry pain point of "different quality in the same batch" in traditional processing.​ In practical applications, these advantages are transformed into tangible scenario value: in the field of outdoor landscapes, plank roads and pavilions made of high-temperature modified wood can resist rain 浸泡 and ultraviolet aging, with their service life extended from 5-8 years of traditional wood to 15-20 years, and annual maintenance costs reduced by more than 40%; in bathroom decoration, wall panels and cabinets made of acetylated modified wood will not mold or deform even in a humid environment for a long time; in the high-end furniture manufacturing industry, due to excellent stability, the loss rate of modified wood during cutting and sanding is reduced from 10% to 3%, and the paint adhesion is increased by 20%, easily achieving diversified surface effects such as matte and high gloss.​ More importantly, this technology conforms to the global green development trend. Physical modification has no chemical additives throughout the process, the reagents used in chemical modification can be recycled, and the modified wood can still be recycled and degraded after its service life. For wood processing enterprises, one equipment can convert low-value fast-growing wood into high-end materials comparable to precious hardwood, reducing raw material costs by 30% while increasing product premium space by more than 50%. From outdoor fences of rural B&Bs to solid wood floors of five-star hotels, from children's furniture to large-scale landscape projects, wood modification equipment is using technological strength to make wood bloom lasting value in more scenarios.​  
High frequency vacuum dryer
Key Features of High-Frequency Vacuum Dryers: High-Frequency Heating: High-frequency vacuum dryers employ electromagnetic waves with frequencies typically ranging from 13.56 to 100 MHz. These waves penetrate the wood material, causing the water molecules to vibrate and generate heat. This high-frequency heating process accelerates the drying time significantly. Vacuum Environment: A high-frequency vacuum dryer creates a low-pressure environment within the drying chamber. By reducing the air pressure, the boiling point of water decreases, enabling the moisture to evaporate at lower temperatures. The vacuum environment enhances the drying efficiency and prevents the wood from overheating or drying too quickly. Radio Frequency Generator: The heart of a high-frequency vacuum dryer is the radio frequency (RF) generator. This device generates the high-frequency electromagnetic waves required for the drying process. The RF generator is capable of adjusting the frequency and power output to suit different wood species and moisture content levels. Drying Chamber: High-frequency vacuum dryers feature a drying chamber where the wood material is placed for drying. The chamber is designed to withstand the vacuum environment and is typically constructed using materials that are resistant to electromagnetic interference. It may also have insulation to minimize heat loss and improve energy efficiency. Temperature and Moisture Control: Advanced high-frequency vacuum dryers have temperature and moisture control systems. These systems monitor and regulate the drying conditions inside the chamber, ensuring optimal drying parameters. Temperature and moisture sensors, along with automated controls, allow for precise adjustments to achieve the desired moisture content in the wood. Safety Features: High-frequency vacuum dryers incorporate safety features to protect both the equipment and the operators. These may include emergency shut-off systems, temperature sensors, pressure relief valves, and alarms. Safety measures are in place to prevent overloading, overheating, or other potential hazards during operation.
Large-scale timber drying rooms offer significant advantages such as high energy efficiency, excellent drying quality, wide applicability, high level of automation, and safety and environmental friendliness.
Large-scale timber drying rooms offer significant advantages such as high energy efficiency, excellent drying quality, wide applicability, high level of automation, and safety and environmental friendliness. Energy Efficiency Advantages: Large-scale timber drying rooms utilize advanced heat pump drying technology, reducing electricity consumption by more than 60% compared to traditional electric heating drying equipment. The all-electric operation causes no environmental pollution. The heat pump dryer utilizes the reverse Carnot cycle principle, using a small amount of electricity to drive the compressor and absorb free heat from the air for drying, significantly improving the energy efficiency ratio. Drying Quality Advantages - Precise Control: Equipped with an intelligent temperature control system and programmable controller, it can precisely adjust temperature (typically 50-80℃), humidity (10%-20%), and airflow circulation speed to ensure uniform drying and reduce defects such as wood cracking and deformation. - High Temperature Treatment: Supports high-temperature drying (up to 75℃). Maintaining a temperature above 55℃ for a certain period can kill mold, and maintaining a temperature of 65℃ for 24 hours can completely kill discoloration and decay fungi, effectively preventing wood deterioration and decay. Production Efficiency Advantages - Time and Labor Saving: Utilizes a strong convection circulating fan, ensuring uniform airflow and eliminating the need for manual turning of the wood, significantly saving labor costs. - Short Drying Cycle: Advanced thermal circulation technology and a large air volume design allow hot air to quickly penetrate the wood, resulting in a drying speed several times faster than traditional equipment, with a cycle typically of 3-7 days. Technological Application Advantages - Intelligent Automation: Controlled by a PLC computer system, it can automatically adjust drying parameters according to wood type, thickness, and other parameters, achieving fully automatic operation without the need for dedicated personnel. Flexible Structure: Modular installation, easy to assemble and disassemble, small footprint, can be flexibly installed indoors or outdoors. Safety and Environmental Advantages: - Safe Operation: Fully enclosed drying system, no risk of electric shock, equipped with early warning system and safety facilities, avoiding the fire hazards of traditional combustion methods. - Environmentally Friendly and Pollution-Free: No combustibles or emissions, all-electric operation meets food hygiene standards, a sustainable and environmentally friendly product. Economic Advantages: - Multi-functional: The same drying room can adapt to the drying needs of materials in different seasons, such as vegetables, fruits, meat, and Chinese medicinal materials, improving equipment utilization and reducing investment costs. - Durable and Low-Maintenance: Uses imported compressors and high-quality components, the system life can reach 15 years, with low maintenance costs. Large-scale wood drying rooms are widely used in the furniture manufacturing, building decoration, flooring production and other wood and wood product industries, and are especially suitable for high-end wood production with strict requirements for drying quality.

2025

11/13

What is the best equipment for drying sweet potato vermicelli?
Currently, the best equipment for drying sweet potato vermicelli is the air-energy heat pump dryer. This equipment utilizes advanced heat pump technology and operates through a reverse Carnot cycle, significantly improving energy efficiency compared to traditional electric heating equipment. Advantages: - Energy-saving and environmentally friendly: Compared to traditional electric heating methods, it offers significant energy savings and low operating costs. It utilizes a combination of air and electricity, making it safe and reliable, and it does not release harmful gases. - High drying quality: Utilizing low-temperature, high-air-volume drying technology, it precisely controls temperature, humidity, and air speed for uniform drying, avoiding color loss or quality degradation caused by high temperatures. - Intelligent: Equipped with a PLC touchscreen control system, it offers automated management, intelligent temperature control, and easy operation. - Versatile: Customizable units with different power outputs and drying chamber sizes can be tailored to suit various production scales, depending on the batch size. Other optional equipment: - Hot air circulation dryer: Offers low energy consumption, high drying efficiency, and simple operation, making it widely used for drying sweet potato vermicelli. - Microwave dryer: Particularly suitable for rainy southern regions, it offers rapid dehydration and mold prevention, completing drying in just 22 minutes. - Airflow dryers: Utilizing a pulsed airflow principle, they are ideal for drying starchy materials, preventing sticking or sticking to the drum wall. Based on actual application feedback, air-source heat pump dryers offer the best performance in terms of energy efficiency, drying quality, and intelligent control, making them a leading choice in the market.

2025

10/22

What is wood heat treatment and what benefits can it bring to your wood?
Heat-treated wood, also known as carbonized wood or physically modified wood, is a type of modified material that undergoes a prolonged pyrolysis treatment at temperatures between 160°C and 230°C in an oxygen-free or low-oxygen environment to improve its physical, mechanical, and durability properties. This process, which does not rely on chemical additives, is an environmentally friendly wood modification technology widely used in construction, decoration, and outdoor projects. The core mechanism is that high temperatures cause changes in the wood's internal chemical composition: hemicellulose degrades, reducing the number of hydroxyl groups, significantly reducing hygroscopicity and expansion and contraction rates, improving dimensional stability; lignin undergoes cross-linking, enhancing structural stability; and nutrients are destroyed, effectively inhibiting fungal and insect attack, achieving natural anti-corrosion properties. After treatment, the wood's equilibrium moisture content is controlled at 4% to 7%, its density is reduced by approximately 10% to 15%, and its thermal conductivity is lowered, resulting in excellent thermal insulation properties. The process consists of three stages: first, drying at 100°C to 130°C to reduce the moisture content to below 3%; then, maintaining the wood at a high temperature of 180°C to 210°C for 2 to 6 hours to achieve pyrolysis; and finally, humidity control to restore the moisture content of the wood. This equipment typically uses a closed reactor, with a PLC system precisely controlling temperature, pressure, and oxygen content. Depending on the treatment conditions and intended use, heat-treated wood can be categorized as surface carbonized wood or deep carbonized wood. The former, which is only carbonized on the surface, is often used in handicrafts; the latter, which is uniformly carbonized throughout its structure and is also known as homogeneous carbonized wood, is suitable for indoor and outdoor decoration, flooring, furniture, and landscaping. However, this material is not recommended for direct contact with soil or prolonged submersion in water.

2025

10/14