SU1562637A1 - Method of drying round timber - Google Patents

Abstract

The invention relates to the field of drying and can be used in the woodworking industry. The purpose of the invention is quality improvement. Round timber 7 is fed to the steaming drum 1 and treated for 5-7 hours with steam at t-re 110 - 115 ° C. Then the timber 7 is fed into the drying chamber 4 and blown with a gaseous agent with a temperature of 60 - 65 ° C. 1 il. 2 tab.

Description

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The invention relates to a wood drying technique and can be used in the woodworking industry, primarily in the drying of timber intended for the manufacture of turned furniture parts.

The aim of the invention is to improve the quality by increasing the radial component.

The drawing shows a diagram of the device for implementing the method.

The device comprises a steam drum 1, a valve 2, a drying chamber 3, a fan k, a heater 5 and a valve 6 for controlling the steam supply.

. The method is carried out as follows.

A stack of round timber 7 is loaded into the steaming drum 1 and steam is supplied through valve 2. The treatment of timber 7 with steam is carried out for an hour at 110-115 ° C.

After that, the stack is loaded into the drying chamber 3, the fan k is turned on, steam 6 is fed through the valve 6 into the heater 5, the temperature in the chamber is adjusted to 60-65 ° C using a dry thermometer and dried to the set final humidity.

Example 1. Hornbeam round timber 7 with a diameter of 50 mm, a length of 800 mm, and an average initial humidity of 59% is loaded into a steaming drum 1. Steam treatment is carried out at 110 ° C for 5 hours. Round timber 7 is unloaded from

Example 4. Aspen round timber 7 with a diameter of 60 mm and an average initial humidity of 63% is loaded into a steaming drum 1. Steam treatment is carried out at 110 ° C for 6 hours. Round timber 7 is unloaded from the steaming drum 1 and loaded into a drying chamber 3. Turn on the fan C, the steaming drum 1 and load it into

drying chamber 3. Turn on the valve -4o give the temperature of the blower tc 65 ° C. Temperature C, set the temperature of the blower tc perurature on a wet thermometer 59 ° C. 60 ° C. Wet temperature The airflow is carried out until the meter reaches 55 ° C. Airflow is produced to achieve a moisture content of 8%. Turn off the camera 3, timber-45 ly 7 unload. Material shrinkage in the radial direction and the quantity of quality wood as a percentage of the total volume of timber is measured by a known method.

Example 2. Beech round timber 7 with a diameter of 60 mm, a length of 800 mm, and an average initial humidity of 57% is loaded into a steaming drum 1. Steam treatment is carried out at 115 ° C for a period of 7 hours. Unload round timber 7 from the steaming drum 1 and load into the drying chamber 3. Turn on the valve 50

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materials 7 humidity 8%. Turn off the camera 3, timber 7 unload. Material shrinkage in the radial direction and the amount of quality wood as a percentage of the total volume of timber 7 are measured by known methods.

The drying of timber 7 with other parameters is carried out in a similar way. The data are given in table. 1 (hornbeam, 50 mm, 1 800 mm) and 2 beech, 60 mm, 1 800 mm).

Claims (1)

The invention allows a significant improvement in quality. Invention Formula The method of drying round timber, mainly intended 0 about Torus C, set the temperature of the blower t  59 ° C Wet temperature five thermometer 55 ° C. Airflow is produced until the wood products reach a moisture content of 8%. Turn off the camera t, timber 7 is unloaded. The material shrinkage in the radial direction and the amount of quality wood as a percentage of the total volume of timber 7 are measured by a known method. Example 3 Hornbeam round timber 7, 80 mm in diameter, with an average initial moisture content of 57%, is loaded into the steaming drum 1. Steam treatment is carried out at 115 ° C for 5 hours. Round timber 7 is unloaded from the steaming drum 1 and loaded into the drying chamber 3. The valve is turned on torus 4, set the temperature of the blower tc 64 ° C. The temperature on the wet thermometer is 55 ° C. The airflow is carried out until 7% of the humidity reaches 8%. Turn off the camera 3, timber 7 unload. The material shrinkage in the radial direction and the amount of quality wood as a percentage of the volume of timber 7 are measured by a known method. Example 4. Aspen round timber 7 with a diameter of 60 mm and an average initial humidity of 63% is loaded into a steaming drum 1. Steam treatment is carried out at 110 ° C for 6 hours. Round timber 7 is unloaded from the steaming drum 1 and loaded into a drying chamber 3. The fan C is turned on, and the flow temperature is set at tc 65 ° C. Wet thermometer temperature is 59 ° C. Airflow is carried out before reaching the forest. give the temperature of the blow tc 65 ° C. Wet thermometer temperature is 59 ° C. Airflow is carried out before reaching the materials 7 humidity 8%. Turn off the camera 3, timber 7 unload. Material shrinkage in the radial direction and the amount of quality wood as a percentage of the total volume of timber 7 are measured by known methods. The drying of timber 7 with other parameters is carried out in a similar way. The data are given in table. 1 (hornbeam, 50 mm, 1 800 mm) and 2 beech, 60 mm, 1 800 mm). The invention allows a significant improvement in quality. Invention Formula The method of drying round timber, mainly intended blowing the gaseous agent to the final moisture, characterized in that, in order to improve the quality by increasing the radial shrinkage component, before blowing process for an hour with steam at 110-115 ° C, and the temperature of the gaseous agent is maintained at 60-65 ° C. Table I 5 6 9 0 | 5) 6 9 10 W H5 16 62 62 66 65 67 67 67 68 68 69 70 72 5.9 s h 6.0 , one 6.2 6.2 6.2 6.5 6.5 6.6 6.6 6.6 100 69 7 100 100 100 75 83 83 82 80 5.3 5.9 6.0 6.0 6.1 6.1 6.2 6, | 6.4 6.6 6.5 6.6 Continuation of table 2 0 0 0 0 5.9 5.9 6.0 6.0 6.1 6.2 6.2 6.1 | 6.1. 6.6 6.7 6.8 100 77 100 100 100 79 75 75 76 77 5.9 6.0 6.1 6.1 6.1 6.2 6.2 6.5 6.5 6.6 6.7 6.7 70 75 79 79 78 77, 78 75 72 71 70 72 5.9 5.9 6.1 6.1 6.1 6.2 6.2 6.5 6.5 6.5 5.6 6.7 6.7