SU1258430A1 - Froth generator - Google Patents

Description

FIELD OF THE INVENTION The invention relates to fire fighting equipment, in particular, to devices for producing high-performance air-mechanical foam.

The purpose of the invention is to achieve compactness of the foam generator.

FIG. 1 shows a foam generator, a section; in fig. 2 is a view A of FIG. one.

The generator has a housing 1 consisting of a louse from a confuser 2, a base diffuser 4. A ring 5 and a conical grid 6 are attached to the front of the diffuser 3 along the contour. The edge of the confuser 2 is attached to ring 7. At the junction of the confuser 2 with the diffuser 3, a ring 8 is attached outside . To the ring 7 on the bracket 9 is attached the housing 10 of the hydraulic motor with the connecting nipple 11 for the frother supply hose (hose not shown). A rotor 12 with nozzles 13 Segner wheels and blades 14 of the fan is mounted on the motor case 10 of the motor. In front of the rotor 12, the spray gun 15 is placed.

The base 7 is attached to the ring 7 by means of the racks 16. The telescopic tubes 17 are attached to the corners of the base 4, the middle tubes 18 of smaller diameter are placed inside and the tubes 19 are placed inside the tubes 18, the end of which is fixed to the ring 5. The telescopic tubes are fixed by pins 20 equipped with cables 21.

The foam generator works as follows.

An aqueous solution of the foaming agent is connected through the sleeve connected to the nut 11 into the cavity of the housing 10 and the rotor 12, from where it enters the nozzles 13 of the Segner wheel and the nozzle of the sprayer 15. When the nozzles 13 of the Segner wheel exit, the kinematic energy of the solution flow provides rotation of the rotor 12 with the blades mi 14 fan. When the fan blade 14 is rotated, the surrounding air is injected into the cavity of the diffuser 3, which moves as a stream onto a conical grid 6 and extends beyond the grid as a stream of foam.

The generator may be folded up for storage or transportation. To do this, it is necessary to remove the pins 20 and drown the tube 18 into the tube 17, and the tube 19 into the tube 18.

The use of the proposed foam generator of a high-speed air-mechanical foam will reduce mass and weight characteristics, ensure ease of transportation and storage, and ensure the working conditions of personnel when extinguishing a fire.

Vida

FIG. 2

Compiled by N. Goldobin

Editor V. PetrashTekhred I. VeresKorrektor G. Reshetnik

Order 5054/5 Circulation 431 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

FC LIIT PPP "Patent, Uzhgorod, st. Project, 4

Claims (2)

1. FOAM GENERATOR, comprising a housing with a diffuser and a confuser, a packet of grids and a hydraulic motor with sprayers and an impeller, characterized in that, for the purpose of compactness of the foam generator, it has rings attached on the outside of the diffuser and confuser at their ends and at the junction, and the housing is made in the form of telescopic rods attached at their ends to the end rings, while the confuser and diffuser are made of elastic material. 2. Foam generator according to π. 1, characterized in that the elastic material of the confuser and the diffuser is impregnated with a hydrophobic composition. FIG. 1