DEVICE FOR WOOD IMPREGNATION UNDER PRESSURE Russian patent published in 2004 - IPC

FIELD: wood impregnation under pressure by impregnating liquid of raw cylindrical blanks from the end, concerns equipment for modification of wood species of low value. SUBSTANCE: the device has hydraulic tanks, flexible hoses installed on a frame by two metal semi-cylinders. Flexible hoses are brought to the end surfaces of the lower semi-cylinder, connecting it through a pump to the hydraulic tanks. The semi-cylinders are lined from the inside by porous rubber, and the inner surface of the ends of the semi-cylinders is made with an increased thickness increased in the direction from the ends of the semi-cylinders at an angle equal to the angle of inclination of wood fiber. The length of the semi-cylinder section (l) on which the increased thickness is made is determined by formula: l = 1/12(L×cosα), where L-the length of the wood blank, mm; α - the angle of inclination of wood fiber. EFFECT: enhanced quality of impregnation of raw wood, reduced consumption of impregnating liquid at a simultaneous expansion of the device functional potentialities. 4 dwg