SU1273599A1 - Foam generator - Google Patents

Abstract

Foam generator auth. St. No. 1190066, characterized in that, in order to increase the efficiency of the suppression by changing the foam multiplicity, it is equipped with a valve installed at the upper partition wall with the possibility of adjusting the angle of the flap, which connects and connects the branch pipes opposite each other, and The stabilizing net is mounted vertically in the guide tube.

Description

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 rsj The invention relates to the mining industry and can also be used in other areas to produce foam for pressure suppression and for extinguishing fires. The purpose of the invention is to increase the efficiency of suppressing by changing the ratio of foam. ; Figure 1 shows the foam generator, the section; Fig 2 is the same, top view; in fig. 3 is the same side view in FIG. 4 - the same, the flap is open; in fig. 5 - the same, the valve is partially open; in fig. 6 - the same, the damper is completely closed, the foam generator consists of a housing 1, made in the lower part of the oval shape, the inlet pipe 2, J of the regulating pipe 3, are made 1. as one whole, the partition wall 4 with openings in the bottom hour device for supplying a foaming liquid, made in the form of a perforated pipe 5 attached to it with the ability to adjust the angle of inclination to the horizontal plane with an equalizing grid 6, a stabilizing grid 7 installed vertically in the guide nozzle 3, The hopper chamber 8 and the device for adjusting the air supply to the foaming, made in the form of a flap 9, are installed with the possibility of adjusting the angle of inclination on the partition wall 4. The foam generator operates as follows. The foaming liquid solution is fed through a rotary perforated pipe 5 with an alignment net 6 fixed on it and, wetting it, collects in the lower part of the foam generator body 1, blocking the openings in the separation partition 4. The valve 9, which is in a vertical position, blocks the passage of air into guide nozzle 3. In this case, air is supplied to the air receiving chamber 8 through the supply nozzle 2, and the passage through the foam forming the liquid and the holes in the separation wall 4, barges the solution. As a result, the active release of the foam and its extrusion to the leveling grid 6 occurs on the surface of the liquid. The leveling grid 6, which is installed with an inclination to the horizontal plane, is uniformly moistened with a foaming liquid. On its surface, air additionally forms foam and at the same time levels the flow over the entire area of the foam generator. The foam, rising higher up to the stabilizing grid 7, is stabilized by it to dispersion and enters the guide pipe 3, after which it is diverted to the center of dust emission. When the valve 9 is fully opened (Fig. 6), the ventilation air is supplied through the inlet pipe 2 into the air intake chamber 8 and, the passage through the foaming liquid and the holes in the partition 4, barges the solution, the passage through the leveling grid 6, additionally moistened with foaming liquid, forms foam. Climbing to the stabilizing grid 7, the foam is stabilized to a dispersion and is directed along the guide pipe 3 to the center of the pulverization. In case of incomplete opening of the valve 9 (Fig. 5), the ventilation air is supplied through the inlet nozzle 2. Part of the air goes into the air intake chamber 8 and, the passage through the foaming liquid and the holes in the partition 4, barges the solution, passing through the leveling grid 6 additionally wetted with a foaming liquid, it forms a foam that rises to the stabilizing grid 7. Another part of the air enters the stabilizing grid 7 and promotes secondary foaming, i.e. changes. (increases) foam multiplicity. When the valve 9 is fully closed (Fig. 4), the ventilation air is supplied through the inlet pipe 2 and. it does not participate in the foaming process, it goes through the nozzle 3. This is used when several foam generators are installed in the dust suppression system and air is supplied from one fan. If it is necessary to stop the supply of foam by one of the foam generators, it is sufficient to completely close its valve 9, and the operation mode of other foam generators is not changed. The foam generator in this case is used as an air duct.

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Claims (1)

FOAM GENERATOR St. No. 1190066, characterized in that, in order to increase the efficiency of the suppression by changing the foam multiplicity, it is equipped with a shutter installed p the upper part of the dividing wall with the possibility of adjusting the angle of rotation, while the supply and guide pipes are placed opposite each other, and the stabilizing mesh is vertically mounted in the guide pipe.