SU393119A1 - METHOD FOR DECORATING A CARPET FROM DRY FIBER AND DUSTY MATERIALS - Google Patents

Description

one

The invention relates to the building materials industry and light industry. It can be applied to the installation of carpets of dry fibrous and pulverized materials on filter substrates, for example, on a mesh conveyor or bulk chip carpet, as well as on the formation of a layer of wadding on a cloth substrate, etc.

Known Snobs pastilles carpet of dry wood fibers using a vacuum.

However, according to this method, it is necessary that the incoming fibers into the chamber be strictly metered in volume. In addition, the irregularity of the iastyluy requires the creation of an excess layer with the subsequent removal of the excess. In addition, due to the lack of density, the carpet to be laid requires understressing.

The aim of the invention is to combine volumetric dosing with the laying of a carpet of increased DENSITY and to get the opportunity to work on dust-like materials.

This is achieved by creating an air flow in a series of stabilized, horizontal, and parallel dilindrical gas vortices. The method is explained in the drawing.

Above the gas permeable backing, imprmmer mesh, particleboard / created

a series of gas (e.g., air) cylindrical vortices 2, above which the material to be laid is 3.

In a cylindrical vortex, the internal pressure below the external and concentric layers of the axis of the vortex stabilizes.

Since the pressure inside the vortex is lower than the external, the lumps of materials entering the vortex are broken by internal pressure.

Local increases in pressure inside the vortex are aligned along the layers and stabilized; the material particles are distributed evenly along the axis of the vortex.

The centrifugal splash material is thrown out of the curl. The part of the material ejected to the substrate at a high tangential velocity is compacted on the substrate, both by inertia and by the gas flow entrained by the material and removed, through the backing, and forms a carpet.

The mass of the material located above the vortices is maintained due to the kinetic energy of the excess of the material entering the vortices ejected from the vortices.

Thus, Lviacca material on top of the vortex layer is cut off by a vortex from the carpet and does not affect its density, providing the vortices with material and gas. The height of the carpet to be laid depends on the distance between the substrate and the vortex zone, in which the gas velocity exceeds the adhesion splashes of the material in the carpet. The density of the carpet depends on the peripheral velocity on the BV shells of the vortices, the length of the section 1 of the carpet is formed 11 and the speed of movement of the substrate.

The insensitivity to fluctuations of the material entering the device depends on the height of the material layer cut off by the vortices, i.e. on the peripheral velocity of the vortices and the bulk weight of the material.

Subject invention

A method of laying a carpet of dry fibrous and pulverized materials and filtering substrate using an air flow, characterized in that, in order to combine bulk dosing with a high-density carpet, the air flow is created by a series of stabilized, horizontal and parallel cylindrical gas vortices.