SU975430A1 - Installation for producing foamed plastic - Google Patents

Description

(54) INSTALLATION FOR OBTAINING FOAM

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The invention relates to the production of foams and can be used in industrial fields, where there is a need to protect soils, rocks and raw materials, materials from freezing, for example in the cement, mining, chemical and other industries.

A known installation for producing foam plastic comprising components supply units, a foaming chamber with fittings for supplying components and compressed air, a maturing chamber and a curing chamber with a fitting for supplying hardener 11

The disadvantages of this installation include a low foaming coefficient (foam maturation), as a result of which the possibility of full polymerization of the foam and the possibility of frequent clogging of chambers due to their large length, which leads to frequent installation stops and a decrease in its production, is limited.

The closest to the technical essence of the invention is a plant for producing foam plastic, containing sources of resin solution, resin and air supply, a foaming chamber and ripened, and j2j.

The disadvantages of the known installation

10 refers to the possibility of clogging of the foaming chamber and maturation due to its large length and low foaming efficiency.

15

The purpose of the invention is to increase the efficiency of foaming and the quality of -. radiant foam.

This goal is achieved by the fact that in an apparatus for producing foam plastic,

Claims (2)

20 containing: supplying sources of resin solution, hardener and air supply, foaming and maturation chamber with inlet pipes for supplying resin solution and air; foaming and maturation chamber is made in the form of a reactor, the casing of which is made in the form of a body of rotation, whose inlet for solution the resin and the outlet for the foam-air mixture are located tangentially to the surface of the reactor vessel, the reactor being provided with a housing covering it and an air collector connected to the air inlet Which communicates with the cavity of the reactor through openings in its vsholnennye housing. In addition, a collector with a nozzle for hardening is installed at the outlet of the reactor. FIG. 1 shows a general installation diagram; in fig. 2 is a view A of FIG. 1 (reactor layout). The installation contains a source of 1 feed resin solution, a source of 2 lodachi.rverditel, pumps 3, shut-off and adjust; Apparatus 4, a foaming and maturation chamber, made in the form of a reactor 5, the casing of which is made in the form of a body of rotation. The inlet 6 for the resin and the outlet 7 for the air-foam mixture are located. tangentially to the surface of the reactor vessel. An inlet 8 for air supply is connected to a detachable reactor vessel 5 by an air manifold 9, which communicates through the openings 10 of the reactor housing with its cavity I. At the outlet nozzle 7 a collector 12c is installed with a hardener injection nozzle. The installation works as follows. The resin solution from the source 1 when turning on the pump 3 is fed through the tangentially located inlet 6 into the reactor 5 and is twisted into the non-compressed air from the compressor is fed through the holes 10 located around the perimeter of the reactor from the collector 9 and the tube 8 is generated additional and sufficient for displacement turbulence, as a result of which they are intensively mixed. The resulting air / air mixture exits through the outlet of the reactor. At the same time, a hardener is injected into the outlet nozzle through the nozzle collector 12, which allows it to be evenly mixed with the foam-air mixture and fully, polymerises the rapidly hardening polymer foam. The use of the proposed plant allows to obtain rapidly hardening foams with a wide range of physicomechanical properties without the use of stabilizing foam additives, for example, carboxymethyl cellulose, etc. In addition, the installation design is simplified, its size is reduced, productivity is increased by reducing the cleaning time of bore channels reactor. Claim 1. An installation for producing a foam containing sources of supply of resin solution, hardener and air, a foaming chamber and maturation with inlets for supplying resin solution and air, characterized in that, in order to increase the pricing efficiency and quality of the foam produced, the chamber foaming and maturation is made in the form of a reactor, the casing of which is made in the form of a rotating body; The inlet pipe for the resin JBopa resin and the outlet pipe for the foam-air mixture are located tangentially to the surface of the reactor vessel, the reactor being equipped with an air collector that surrounds the vessel and is connected to the blade. reactor through holes made in its hull i. 2. Installation under item 1, of which is: with the fact that at the outlet of the reactor nozzle there is a collector with a nozzle for the introduction of a hardener. Sources of information taken into account during the examination 1. USSR author's certificate No. 3.61892, cl. B 291) 27 / OO, 197 O, 2. USSR author's certificate number 763385, cl. B 29 T) 27 / OO, 1976 (prototype). eleven tptie.1 Hardener