SU863004A1 - Apparatus for spraying composition - Google Patents

Description

one

The invention relates to devices for foaming materials at the site of use, and more specifically for producing hardening foam from viscous polymer extensions, intended for use as sound and plastic materials and for special processing chains.

A device for producing a hardening foam is known, consisting of a cannon having a cylindrical part and two coic parts: an upper one with a hole for the exit of the foam and a lower part with an inlet for supplying the layer of the composition and a perforated bottom for air inlet D3

A disadvantage of this device is the dependence of the foam formation mode, and consequently, the properties of the foam obtained, on the orientation of the device towards the horizon, which also affects the efficiency of its use, especially when using highly reactive materials.

The closest to the invention of the technical essence and the achieved result is a device for spraying compositions, comprising a housing with a nozzle for supplying liquid and concentrically located 1e relative to the housing with the formation of an annular gap outer and inner tubes with nozzles for supplying gas.

However, in this device, the direction and dispersion of the sprayed liquid depend on external factors.

The purpose of the invention is to provide the possibility of dispersing foam compositions.

five

This goal is achieved by the fact that the device for raspitsha compositions comprising a housing with a nozzle for supplying liquids and concentrically located relative to the housing

Claims (1)

With the formation of an annular gap, the outer and inner tubes with gas inlets are placed 1, cy in the inner tube along its axis 38 to form an annular gap with a tube for reactant supply and fixed concentrically at the outlet end of the outer tube with a pipe-nets at its outlet end, the distance A between the outlet ends of the inner tube and the tube for supplying the reactant is selected from the relation 0), where O is the diameter of the outlet of the inner tube. The drawing shows a device for raspiash compositions, General view. The device includes a housing 1 with Pat. chopping 2 for the supply of liquid and concentrically located relative to the body I with the formation of an annular gap of the outer and inner tubes 3 and 4 with the pipes 5 and 6 for the supply of gas. In addition, it is provided with tube 7 placed in the tube 4 along its axis with the formation of an annular gap by tube 7 for supplying the reactant and concentrically fixed at the outlet end of the outer tube 3 with a venturi 8 with a packet of grids 9 at its output end. The distance A between the outlet ends of the inner tube 4 and the tube 7, pdg of the reactant supply is selected from the ratio A (1-5) 0, where D is the diameter of the outlet of the inner tube 4. On tubes 3 and 4 and the housing 1 is fixed The threads are tapered caps 10-12 with holes. The device works as follows. The working components are simultaneously supplied to housing I. For example, the composition of an aqueous solution of polyvium alcohol (liquid) under pressure leaves the channel formed by tube 4 and housing 1 and caps i1 and I2 to the outlet of tube 3, where the thin film the fluid ring is washed outside and inside with compressed air (gas). The resulting gas-liquid jet is crushed on grids 9 to form a foam. Through pipe 7, an aqueous solution of ammonia (reactant) is fed, with which the polymer composition interacts. The receiving foam after a few seconds goes into a gelatinous state at the site of application. With the help of caps 11 and 12, it is possible to control the output dimensions of the channels for the working components and, consequently, the consumption of the components and the foaming regime. The proposed device is effective for inducing viscous compositions at the site of use, regardless of the device’s orientation i when using highly reactive components, and allows the reactant to be supplied as a solid, flowable, liquid or gaseous substance. Apparatus for dispersing compositions comprising a housing with a liquid supply nozzle and concentrically located relative to the housing with the formation of an annular gap, the outer and inner tubes with nozzles for supplying gas, characterized in that, in order to ensure that the foam compositions can be sprayed, tube along its axis with the formation of an annular gap with a tube for supplying the reactant and fixed koscentrically at the upper end of the outer tube with a Venturi tube with a pack that meshes on oesh 1hodnom end, wherein the distance between the output ends of the inner tube and tubes for rootstock reactant is selected from the ratio A (1-5) 0 where D - diameter of the outlet of the inner tube. Sources of information taken into account in the examination 1. US patent number 3492250, cl. 2602 .5., Publ., 1970, 2, lUmt. The study of the dispersion of the cut in the nozzles, working on the principle of double-sided washing of the Journal with a gas surface of the liquid. Applied Chemistry, 1962, v. 35, vol., 9, p. 1996 fig. 2 (prototype). -rJ / T./