SU958105A1 - Apparatus for preparing foam for engineering purposes - Google Patents

Description

(5) DEVICE FOR PREPARATION OF TECHNICAL FOAM

one

The invention relates to the building materials industry and can be used for the production of cellular concrete and porous gypsum concrete.

A foam preparation device is known, which contains a centrifugal pump connected by a suction and delivery pipe to a working tank, which is equipped with an air suction tube mounted in the suction pipe, and a spray device Dl is fixed at the discharge pipe outlet.

The closest to the present invention is a device for preparing a technical foam, containing interconnected nozzles for supplying water, a foaming solution and dispensing foam, the latter of which is made in the form of a truncated cone, and has an insert with nets 2} at its end.

A disadvantage of the known devices is the low quality of the foam being prepared.

The purpose of the invention is to improve the quality of the foam being prepared.

five

This goal is achieved by the fact that, in a device for preparing a technical foam, containing interconnected pipes for feeding water, a foaming solution and dispensing foam, the latter of which is made in the form of a truncated cone and has an insert with nets on its end, a water pipe 5 is shaped as a truncated cone and is connected to a smaller base with a smaller base of the foam outlet, the outlet for supplying the foaming solution is fixed in the month of the latter, and the dimensions of the cells of each the previous grid exceeds the cell size of each subsequent grid.

395

FIG. 1 shows the proposed device, a general view in section; in fig. 2 — node I in FIG. one.

A device for preparing a technical foam contains interconnected nozzles for supplying water 1, foaming solution 2 and dispensing foam 3 of the latter of which is made in the form of a truncated cone and has an insert k with nets 5 in the end portion. In the device nozzle 1 for supplying water is made truncated cone and connected to a smaller base with a smaller base of the nozzle 3 issuing foam, and the nozzle 2 for supplying the foaming solution is fixed at the junction of the latter, and the dimensions of the cells of each previous grid 6 exceed The sizes of the cells of each subsequent grid are 7.

The liner is fastened using a split spring ring 8. The nozzles 1 and 2 are centered with conduits 9 and 10, respectively, with water and foaming solution tanks.

A device for the preparation of technical foam works as follows.

The pipeline 9 in the pipe 1 enters the water.

With the passage of water through a narrow cross section, the flow velocity of the water increases sharply and the pressure drops, thereby creating a vacuum zone. As a result, foaming solution is supplied from the tank through conduit 10 to nozzle 2. The foaming solution, mixed with water, moves under

pressure through the liner C with the grids 5, the dimensions of the cells of each previous grid exceed the sizes of the cells of each subsequent grid, resulting in a flow of foam.

The proposed implementation of the device for the preparation of technical foam can significantly improve its quality.

Claims (2)

1. USSR author's certificate M, cl. In 28 C 5/38, 1972. 2. USSR author's certificate N 337529, cl. E 21 F 5/00, 1970.