SU1235746A1 - Apparatus for manufacturing insulating fibre boards - Google Patents

Description

The invention relates to the woodworking industry and can be used in the process streams of the production of fibreboard with a wet method.

The purpose of the invention is to reduce drying time, reduce material consumption and improve the quality of the plates.

FIG. 1 shows the plates, the cross section; in fig. 2 - device diagram; in fig. 3 is a view A of FIG. 2

A device for producing insulating fiberboard contains a mass supply unit 1, a slit nozzle 2, a chamber 3 with areas for molding and pressing a carpet, formed by two perforated, angled one to another, covered by two endless grids 5, Press 6, tension 7 and set correct 8 shafts. The device has means for forming protrusions and depressions on the carpet, made in the form of flexible profiling elements 9 fixed on one of the grids, and the mesh-regular shaft 10 of this grid is made with annular grooves opposed to the flexible profiling elements. The device also has a perforated shaft 11 of the mass feed unit, an overflow partition 12, means 13 for placing the carpet in a horizontal position (corner).

The device works as follows.

The pulp is sent to the feeding unit 1, where the deflocculation is performed using a rotating perforated shaft 11, while the required mass level is created by the appropriate installation of the overflow partition 12. Then

the slit nozzle 2 mass is fed into the chamber 3, where water is removed through the perforations of the plates 4. At the same time, a layer of fibers is deposited on the grids 5, which in a certain place of the shaping chamber (this area is called the molding section) are joined and form a carpet. When the grids move between shrinking, imis slabs 4, i.e., at the pressing site, the carpet is dehydrated, after passing between the shafts 6, the carpet is horizontalized with the help of a slide 13. The molding and the pressing of the carpet occur flexible groproofing elements 9, therefore, the carpet, and then the slab, have the same density in any section. Flexible profiling elements mounted on the grids move along the valleys of the grid of the correcting shaft Go, which ensures the stability of the arrangement of the grids.

The presence of a significantly larger plate surface leads to a reduction in the time of support due to an increase in the surface of evaporation of moisture, and consequently, it allows to increase the productivity of the line.

Consistently gluing the obtained insulation of ZING plates into a two-layer panel allows to obtain good physical and mechanical properties of the insulation material with a significant reduction in material consumption (density decreases from 340 to 120 kg / m with sufficient flexural strength values from the point of view of operation).

Thus, ispo. The use of the proposed device makes it possible to reduce the consumption of materials and reduce the sui time, i.e., increase productivity

FIG. 2

Compiled by Y. Clin

Editor A. ShishkinTehred I. VeresKorrektor T. Kolb

Order 2972/15 Circulation 640 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

fig.Z

Claims (1)

DEVICE FOR THE PRODUCTION OF INSULATING WOOD-FIBER BOARDS, comprising a mass supply unit, a slit-like branch pipe, a chamber with carpet molding and pressing sections, formed by two perforated endless grids located at an angle to one another, press, tension and mesh straightening shafts, characterized in that In order to reduce drying time, reduce material consumption and improve the quality of plates, it has a means for the formation of protrusions and depressions on the carpet, made in the form of flexible profiling elements, and the mesh-straightening shaft of this mesh is made with annular grooves located opposite the flexible profiling elements. SU,. „1235746