SU1337525A1 - Foam generator - Google Patents

Abstract

The invention relates to the mining industry and is intended to suppress dust and extinguish fires in hard to reach places. The foam generator contains two foam tubes (P) 1 in series. Each P 1 has a nozzle 5 located inside it, the position of which relative to the radial holes 6 is fixed by an adjusting sleeve 4. The outlet part of P 1 is connected to the socket 7, in the center of which there is nozzle accelerator 8, which, by dosing the foaming liquid into the socket 7, accelerates the process of obtaining homogeneity of the foam entering the cylindrical mixing chamber 9. The chamber 9 is connected to the knee 10 and the outlet pipe I, in which the outlet nozzle 12 is placed with the adjusting sleeve 4. The nozzle 12 ensures the distance of the foam transportation by axial displacement relative to the outlet part of the knee 10 and by opening the nozzle flare within the cross section of the pipe 11. Multiplicity foam increases due to the fact that it, falling into the chamber 9, is qualitatively converted from low magnification to medium while increasing its stability. I il. (L If / 7. ft 77 7U WITH CO JV GO O1 7 3

Description

The foam generator case is air ejected. Air entrained by the jet of foaming fluid and moving along the body of the foam generator forms an unstable low expansion foam. By means of the valve 3 and the adjusting sleeve 4, the flow rate of the fluid entering the nozzle 5 and the ejected air through the openings 6 can vary in the direction of increasing or decreasing, but the quality of the foam.

This invention relates to a device for suppressing dust or extinguishing fires in hard to reach places.

The aim of the invention is to increase the multiplicity of the foam and the range of its transportation.

The drawing shows the proposed foam generator, a general view.

The foam generator consists of two (or several) foamguns 1 installed

consistently. To each of the foams obtained by the foam generator, still catching 1, the supply line 2 is supplied for an inhomogeneous, watery and non-forming fluid. A valve 3 is installed on the pipe-resistant water up to the exit of the foam into the bell mouth 2. Foam board 7. To improve the quality of the foam in the socket

equipped with an adjusting sleeve 4, which is installed an accelerator nozzle 8 with a sleeve changes and fixes the position of the nozzle-15 valve 3. The nozzle works without suction 5 in the axial direction relative to the ambient air. Next, the foam flow of the radial holes 6 made in the body of the foam pipe 1. The nozzle 5 is installed in the entrance part of the body of the foam pipe 1, and its output part is connected to the socket 7, in the center of which 20 stability is established. the accelerator nozzle 8, which, by dosages from the chamber 9 foam in the "finished state"

The foaming fluid into the socket 7 through the elbow 10 is transported to the outlet - speeds up the process of obtaining a uniform pipe 11 by means of an outlet foam nozzle. The nozzle 8 is different from the nozzle 5 of the pony-12, the adjusting sleeve 4 and the valve 3

the increased productivity and the increased 25 is thrown into the surrounding angle of the flare. The nozzle 8 is provided with a powerful long-range jet (a third enters the cylindrical chamber 9, where the qualitative conversion of foam from low magnification to medium magnification occurs while simultaneously increasing it as the nozzle 5 by sleeve 4, only to adjust the angle of the torch relative to the cylindrical mixer 9, which is connected to the output of the socket 7. The nozzle-accelerator 8, the sleeve 4 30 and the socket 7 form the second stage of the foam generator.

The cylindrical displacement chamber 9 is connected to the elbow 10 and the outlet pipe 11, in which the outlet nozzle 12 is placed

foam generator stump).

Claims (1)

Invention Formula A foam generator comprising a foam barrel made in the form of a pipe with side holes for ejection of air, having a nozzle located inside it for spraying the foaming liquid and a sleeve for adjusting the position of the sops adjusting sleeve 4. The nozzle 12 relative to the side holes gives the desired the range of the jet is that, in order to increase the multiplicity of foam and its transportation distance, it is equipped with a socket, an additional foams, a 40-nozzle accelerator nozzles and a cylindrical mixing chamber with the knee, and the foams are connected foam by axially moving it relative to the outlet part of the elbow 10 and by the opening angle of the nozzle plume within the cross section of the outlet pipe 11 (third stage of the foam generator). The foam generator works as follows. When opening the valve 3 and the flow through the pipeline 2 foaming liquid in with the bell, the output of which communicates with the cylindrical chamber of displacement, with one accelerator nozzle installed along the axis of symmetry of the socket, and the second - nozzle 5, through the radial holes 6 to 45 at the exit of the knee. The foam generator case is air ejected. Air entrained by the jet of foaming fluid and moving along the body of the foam generator forms an unstable low expansion foam. By means of the valve 3 and the adjusting sleeve 4, the flow rate of the fluid entering the nozzle 5 and the ejected air through the openings 6 can vary in the direction of increasing or decreasing, but the quality of the foam. as received by the foam generator, still remains heterogeneous, watery and unstable up to and including foam. 7 to improve the quality of foam in the socket. 7, an accelerator nozzle 8 is installed with a sleeve valve 3. The nozzle operates without ambient air leaks. Next, flow foam stability. From chamber 9 foam in ready condition enters the cylindrical chamber 9, where there is a qualitative transformation of the foam from a low multiplicity into an average multiplicity while increasing its efficiency of the foam generator). Invention Formula with the bell, the output of which communicates with the cylindrical chamber of displacement, with one accelerator nozzle installed along the axis of symmetry of the socket, and the second - at the exit of the knee.