The performance and characteristics of each component of the Maichuang series metal body wood drying kiln are as follows:

1. Kiln body

In addition to meeting general design requirements such as durability, the kiln body of the drying kiln must also meet special requirements such as insulation, sealing, and anti-corrosion. The Maichuang series drying equipment has achieved this well. Maichuang series metal body wood dryer; The inner layer of the metal kiln body is made of aluminum plate, the outer layer is made of aluminum plate or colored steel plate, and a special insulation layer such as centrifugal glass wool is sandwiched in the middle. The kiln body skeleton is made of steel structure or aluminum alloy structure. The kiln body is well sealed, has sufficient insulation performance, and can effectively resist corrosion. The ceiling inside the kiln is made of aluminum plates or compacted with concrete.

2. Kiln door

There are three types of kiln doors: single door, double door, and hanging door; When building two or more connected kilns, the kiln doors are usually hanging doors, and when hanging doors are used, door lifters need to be installed. The structure of the kiln door is the same as that of the metal kiln body, with insulation and anti-corrosion properties. In order to ensure the tightness of the kiln door, a special silicone sealing ring with high temperature resistance, aging resistance and good elasticity is set around the kiln door to ensure that the kiln door is air tight. The door opener adopts a hand cranked worm gear structure, which can be suspended or floor standing, with convenient and flexible operation, smooth and reliable action.

3. Heating system

The main body of the heating system is the Maichuang series steam hot blast stove. The quality of a hot blast stove is not only related to the lifespan of the heating or steam system, but also to the heat transfer efficiency of the heat exchanger. The steam type hot air stove used in the Maichuang series metal body wood dryer is a new type of steel (stainless steel or seamless steel) aluminum composite integral rolling finned tube heating furnace. The fins have no wrinkles, low airflow resistance, high heat transfer efficiency, good corrosion resistance, and long service life. Practice has shown that the comprehensive performance of this hot blast stove is significantly better than the commonly used wound tube or series tube heaters in China. The steam type hot air stove itself is equipped with a steam generating device, which can replace the outdated process of the original wood dryer that required two stoves. Our Maichuang series wood drying equipment is a new generation of wood drying equipment developed in recent years. The advantage of this equipment is that only one steam type hot air stove is needed. Low energy consumption, fast temperature rise, easy operation, and equipped with various wood drying processes with years of experience, we only require a 2.2kW power consumption, environmental protection and other advantages. Fuel requires wood scraps or coal.

4. Humidity control system

Although the humidity control system is simple, it is very important for ensuring the quality of wood drying. The humidity control system is a steam generating device that is already present in the hot blast stove. When using steam heating, it sprays atmospheric saturated steam into the kiln; When using high-temperature water heating, saturated steam or atomized water is sprayed into the kiln.

5. Airflow circulation system

Airflow circulation is an important means to accelerate drying speed and ensure drying uniformity. To improve the sealing performance of the kiln and the reliability of the fan operation, the Maichuang series metal body wood dryer adopts a high-temperature and moisture-proof motor and fan installed together in the kiln, with direct transmission. The fan is specially designed using Siemens technology and is an efficient, energy-saving, precision manufactured blade axial flow fan with the most advanced wing shaped twisted blades symmetrically arranged. It has high air volume, high air pressure, low energy consumption, and long service life; The electric motor adopts a high-tech product three-phase asynchronous motor that is exempt from inspection for export, and has the characteristics of high temperature resistance, corrosion resistance, moisture resistance, etc. Operating environment temperature:~110 ℃, humidity: above 98%, protection level: IP55, working mode: continuous (SI).

6. Inlet and exhaust system

The intake and exhaust devices of the Maichuang series metal body wood dryer can be controlled automatically or manually. The dehumidification motor of the automatic control system can achieve multi-level control. Both automatic and manual control operations are very convenient and the actions are very flexible.

7. Detection system

The detection system mainly refers to the detection of wood moisture content and the detection of medium temperature and humidity.

The detection of wood moisture content adopts the electrical measurement method, which can simultaneously measure the moisture content of 6 measuring points in the kiln. It is convenient and fast to use, with digital display, accurate and reliable readings. The detection of medium humidity adopts the temperature difference method, and the devices used are dry and wet bulb thermometers. This dry and wet bulb thermometer consists of two temperature sensors with the same accuracy. The temperature sensing part of one of the thermometers is wrapped in a gauze cover, and the end of the gauze cover is immersed in a water tank. This thermometer is called a wet bulb thermometer. Due to the heat required for water evaporation, the reading of the wet bulb thermometer is lower than that of the adjacent dry bulb thermometer. The lower the reading of the wet bulb thermometer, the drier the medium. The principle is that when the medium inside the kiln is relatively dry, the moisture on the wet bulb gauze cover evaporates faster. As evaporation requires heat consumption, the reading of the wet bulb thermometer will be lower, which can determine the humidity of the medium. The detection of medium temperature is determined by the dry bulb thermometer in the above-mentioned device. The readings of the dry and wet bulb thermometers are displayed on the LCD display panel of the automatic controller, with accurate and reliable readings. The manual control drying equipment measures the dry and wet bulb temperatures using stainless steel instruments.

8. Control system

The wood drying process is essentially a process of heat and moisture exchange between the drying medium and the wood, therefore, the control of the wood drying process is actually the control of the medium conditions. The medium conditions closely related to wood drying are mainly temperature, humidity, and circulation speed. The circulation speed is determined by the fan, which runs continuously after starting and is generally not controlled. So, what may actually need to be controlled is only the temperature and humidity of the medium.

According to the needs, the control system of the Maichuang series metal body wood dryer has three types: semi-automatic, fully automatic, and manual control. The semi-automatic and fully automatic control systems use wood drying semi-automatic and automatic controllers for control. The system operates safely and reliably, ensuring the quality of drying. Please refer to the relevant manual for information.