SU1021629A1 - Apparatus for gumming wooden fibres - Google Patents

Abstract

A DEVICE FOR OULDING THE WOOD FIBER, containing a refiner, a mass pipeline, a nozzle for feeding a binder, and a cyclone - steam separator, different from the fact that, in order to increase the reliability of the device and to improve the degree of mixing of the binder with. wood fiber, the device is equipped with an additional mass pipe with a pressure fan, the latter from the fiber inlet side is connected through an inlet pipe to a cyclone-vapor separator, and a fork for feeding the binder is installed in the additional mass wire. (L

Description

The invention relates to the production of plate materials, in particular to equipment for the manufacture of fibreboard by the dry method. A device is known for applying a binder to wood fiber, which is made from the refiner of the mass feed unit with the nozzles 1. It is also known a device for the osmolation of wood fiber, including a refiner, a nozzle for feeding a binder, and a cyclone separator: However, the known devices are characterized by low reliability and an insufficient degree of blending of the binder with wood fiber. The purpose of the invention is to increase the reliability of the device and improve the degree of mixing. The goal is achieved by the fact that the device is supplied with additional mass conductors with a pressure fan, the latter from the fiber inlet side is connected through an inlet pipe with a cyclone-vapor separator, and the nozzle for supplying the binder is installed in the additional mass pipeline. Fig. 1 shows a diagram of a device for tarring wood fiber (in; Fig. 2 - section A-A in Fig. 1. A device for tarring wood fiber includes refiner 1, mass pipeline 2, cyclone - vapor separator 3, inlet 4, connected to a pressure fan 5, an additional mass pipe 6 with a for- (a hole 7 and a twisting device 8. The nozzle 7 is mounted on a twisting device 8, and it can move along the additional mass pipeline b, and viewing windows 9 serve to inspect and clean the tarry zone without does it stop itself The device operates as follows: Wood fiber from refiner 1 by excessive vapor pressure (0.61, 2 MPa) is discharged through mass pipeline 2 to cyclone - vapor separator 3, where after separating steam from fiber, the latter with a temperature of 7090 ° C enters through a loading device in the additional mass pipe 6. In the same mass line through the open end of the pipe 4, cold air flows in, which picks up the fiber and with the help of a pressure fan 5 and a swirling device 8 supplies it to the binder inlet zone. Due to the swirling device, the fiber moves in a thin stream in a spiral, and at this moment a binder is introduced through the nozzle. In the tar area, the temperature is 30-40 ° C, and the binder is constantly in a low viscosity state, i.e. the possibility of sticking of the resin to the walls of the additional mass pipeline is excluded.

Claims (1)

. DEVICE FOR TREATING WOOD FIBER, containing a refiner, a mass pipe, a nozzle for supplying a binder, and a cyclone — a steam separator, characterized in that, in order to increase the reliability of the device and improve the degree of mixing of the binder with. wood fiber, the device is equipped with an additional mass pipe with a pressure fan, the latter from the fiber inlet side being connected through an inlet pipe to a cyclone - steam separator, and the nozzle for supplying a binder is installed in an additional mass pipe.