(1) The start of the drying room. Close the inlet and exhaust ducts; start the fans. For a reversible circulation drying room with multiple fans, start the fans one by one. Do not start several fans at the same time to avoid overloading the circuit; open the valve of the bypass pipe of the steam trap and open it slowly. Heater, to make the heating system heat up slowly and discharge the air, water and rust in the piping system at the same time, when a large amount of steam is ejected from the bypass pipe, then close the valve of the bypass pipe and open the steam trap valve to make the steam trap work normally .

The working capacity of the heat pump dryer is related to the environment in which it is used. After one year of continuous use, the interior of the heat pump dryer unit may become dirty and the working capacity will decrease. Therefore, special equipment inspection and equipment maintenance must be carried out. For this kind of inspection and maintenance work, it is recommended that you contact the heat pump dryer manufacturer or its maintenance department. Users should pay attention when using and maintaining this unit: all safety protection devices in the unit are set before leaving the factory, and do not adjust it by yourself. .

Thermal modification of wood: heating the wood, resulting in a certain degree of degradation of the wood components, resulting in the desired improvement of the wood properties

The wood dryer equipment is a large-scale equipment with various operations, and the safety issues in the production process of the wood dryer should be taken seriously. Production must be safe, and safety can lead to normal production. In the general environment, when safety and production conflict (such as personal and mechanical), the first thing to obey is safety

The end of the wood is dried first due to the rapid evaporation of water. When the moisture of the end is lower than the fiber saturation point, the end cells begin to shrink. When the dry shrinkage stress reaches the strength limit of the wood, end cracking occurs.

Production units usually use the gravimetric method and the electrical measurement method

Carbonized wood is a wood that is subjected to short-term pyrolysis modification treatment at a temperature of 180°C to 250°C in order to improve the dimensional stability and durability of wood in an environment that blocks oxidation and hydrolysis reactions.

Carbonized wood is a modified product of high temperature heat treatment of wood. Compared with ordinary wood, it has a series of characteristics:

During the drying process of wood, in the process of water evaporation in wood, due to the different combinations of various water in wood and wood, the properties of water in wood at each stage are different, and the properties of wood corresponding to this are also different. Therefore, in the wood drying process, the evaporation process of water in the wood should be reasonably controlled, so as to improve the drying speed as much as possible on the premise of ensuring the drying quality of the wood.

Whether the sawn timber accumulation is reasonable or not directly affects the dry quality of the wood, and its importance cannot be ignored because the sawn timber accumulation operation is simple and heavy. There are some requirements for stacking operations as follows: