China Shandong Junxu Heavy Industry (Group) Co., Ltd. Company News

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.

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.

Hot air furnaces for wood drying offer the following advantages: High efficiency and energy saving - High fuel utilization: Utilizing advanced combustion and heat exchange technologies, fuel is fully burned, resulting in high thermal efficiency and reduced energy waste. - Waste heat recovery: Equipped with a heat recovery device, heat energy is recovered during the drying process, further improving heat utilization and reducing fuel consumption. Excellent drying results - Stable temperature: Precise hot air temperature control with minimal fluctuation ensures uniform heating of the wood, improving drying quality. - Uniform drying: A forced circulation system distributes the hot air evenly within the drying chamber, preventing overheating or uneven drying of the wood. Wide applicability - Diverse fuels: Wood processing waste such as sawdust, bark, and shavings, as well as coal, can be used as fuel, reducing operating costs. - High adaptability: Suitable for wood of varying species, board thickness, and moisture content, allowing for flexible use of various drying processes. Easy operation - High degree of automation: Features such as automatic feeding and automatic adjustment reduce manual intervention and labor intensity. - Easy Maintenance: The rational structural design facilitates inspection and maintenance, extending the equipment's service life. Environmentally Friendly - Low Emissions: Utilizing environmentally friendly technologies, emissions of harmful gases such as smoke and sulfur dioxide are low, meeting environmental standards. - Resource Recycling: Utilizing wood processing waste as fuel, this achieves resource recycling and reduces environmental pollution. Multi-Purpose Machine - Versatility: In addition to wood drying, it can also be used for workshop heating or drying other materials, improving equipment utilization. In summary, the wood drying hot air furnace, with its high efficiency and energy saving, excellent drying results, wide applicability, ease of operation, environmental friendliness, and versatility, is an ideal drying equipment for wood processing companies.

Wood modification equipment achieves performance leap by multi-dimensional precise control of physical, chemical or biological processes to deeply optimize wood molecular structure:​ Physical Modification (Thermal Treatment/High-pressure Densification)​ Thermal treatment: Gradually heat wood to 160-240℃ (adjusted by wood species) in a nitrogen or steam-protected closed environment, permanently reducing hydrophilic groups in wood by degrading part of hemicellulose and rearranging lignin molecular chains.​ High-pressure densification: Compress cell structure with 10-30MPa pressure after softening wood at high temperature, increasing wood density by 30%-60%.​ ✅ Core advantages: More environmentally friendly without chemical additives; treated wood has stable moisture content of 8%-12%, weather resistance increased by 2-3 times, and hardness increased by over 40%.​ Chemical Modification (Acetylation/Resin Impregnation)​ Acetylation: Place wood in acetic anhydride solution for 3-6 hours of acetylation reaction at 80-120℃, replacing hydroxyl groups (-OH) in wood cells with acetyl groups to cut off moisture adsorption paths.​ Resin impregnation: Inject environmentally friendly resin into wood conduits through vacuum-pressure process, forming "skeleton support" after curing to fill cell gaps.​ ✅ Core advantages: Dimensional stability over 90%, water absorption reduced by 60%-70%, and insect resistance and anti-corrosion life extended to over 20 years.​ Intelligent Integrated System​ Equipped with PLC control system and multi-sensor array, real-time monitoring of temperature (±1℃), pressure (±0.01MPa), humidity (±2%RH) and other parameters, automatically adjusting process curves to ensure performance deviation of each cubic meter of wood ≤5%.​ ✅ Core advantages: Production efficiency increased by 30%, energy consumption reduced by 20%, labor cost reduced by 40%, realizing large-scale stable production.​  

Key Features of Wood Drying Machines: Drying Chamber: Wood drying machines consist of a drying chamber or kiln where the wood is placed for drying. The chamber is designed to create a controlled environment to optimize the drying process. It may be constructed with insulated walls and airtight seals to prevent heat and moisture loss. Heating System: Wood drying machines utilize a heating system to raise the temperature inside the drying chamber. The heating system can be powered by various energy sources such as electricity, natural gas, or biomass. It provides the necessary heat energy to evaporate moisture from the wood. Air Circulation: Proper air circulation is crucial for effective wood drying. Wood drying machines are equipped with fans or blowers that circulate heated air throughout the drying chamber. This ensures even distribution of heat and moisture removal, facilitating uniform drying of the wood. Humidity Control: Wood drying machines have humidity control mechanisms to regulate the moisture levels inside the drying chamber. This can be achieved through the use of sensors, controllers, and humidifiers or dehumidifiers. Maintaining an optimal humidity level helps prevent over-drying or under-drying of the wood. Monitoring and Control Systems: Advanced wood drying machines are equipped with monitoring and control systems. These systems allow operators to monitor and adjust various parameters such as temperature, humidity, airflow, and drying time. They ensure precise control over the drying process and help optimize drying efficiency. Safety Features: Wood drying machines prioritize safety during operation. They may include safety interlocks, temperature sensors, and emergency shut-off systems to prevent overheating, fire hazards, or other potential risks. Safety features help protect both the equipment and the operators.