SU1558410A1 - Hand pistol-type fire-extinguishing - Google Patents

Abstract

The invention relates to fire fighting equipment and is intended to supply a fire extinguishing composition, preferably a gas-powder mixture, to the site of fire. The proposed fire extinguisher design makes it possible to increase its operational reliability. To do this, in a barrel containing a housing with a handle with a spring-loaded longitudinally moving valve placed in it, the housing is made in the form of a hollow cylinder with a hole blocked by a cylindrical valve, the end surface of which is curved, matching with a hole in the housing and having a slope parallel to the axis hollow handle. Due to this, a uninterrupted passage of a gas-powder flow with a fully open hole in the handle is ensured, and the inclined end surface of the cylindrical piston-valve directs the flow to the nozzle. Changing the bore area of the hole in the handle allows you to adjust the flow rate of the powder supplied to extinguish the fire. 3 il.

Description

The invention relates to fire fighting equipment, namely to manual fire extinguishers in the form of pistols or shotguns, and is intended primarily for the supply of gas-powder mixtures.

The aim of the invention is to improve the reliability of the device.

Fig 1 shows a foam fire extinguisher, Fig 2 shows the same, top view; Fig 3 - section aa in Fig 1

The fire extinguisher consists of a housing 1 with longitudinal grooves 2, a locking member including a piston valve 3, a spring 4, ti 5 and a trigger lever 6 The piston valve 3 is made in the form of a cylinder ending in a truncated cone, the end surface of which is made with a through inclined groove, the walls of which have the shape of a cone with a base mating with a hole in the housing 1, and with the top

at the extreme point of the longitudinal axis of the end surface of the walls of the housing 1 on one side are narrowed in the form of a nozzle 7 With the housing 1 the barrel 8 is connected, ending with a replaceable nozzle 9 with a handle 10 K housing 1 at an angle to the longitudinal axis of the fire extinguisher rigidly attached to the floor of the handle 11 s connecting head 12 for mounting a fire hose A curved end face 13 of a cylindrical piston valve 3 has a slope parallel to the longitudinal axis of the hole in the handle 11

In the non-working (closed) position, the cylindrical piston-valve 3 is in the extreme front position (Fig. 1) of the compacted cylindrical part and overlaps the output opening of the iHnoi stick 11, impeding supply op. i, fire shitela

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In the working (open) position, when the trigger lever 6 is pressed, the cylindrical piston-valve 3, which is flexibly connected by pulls 5 to the trigger lever 6, moves to the rearmost position, the spring 4 is compressed and fills the internal cavity of the piston-valve 3, the outlet the hollow handle 1 is opened, the gas-powder mixture is mixed along the inclined curvilinear end surface of the piston 13 so that the shape of the flow section in the closure body approaches the circle.

Claims (1)

Claims of the invention A hand-held fire extinguisher in the form of a pistol, 5 containing a cylindrical hollow body with a nozzle at the end, attached obliquely to the body and having a connecting element for a fire hose a hollow handle, the cavity of which is co. „„ „„ V ...... L. r-g-- ",," injects into the body cavity by discharging 3 and enters the body: 1, the walls "10" in the ero wall of the orifice, and which are narrowed and smoothly pass into the nozzle 7, intended to accelerate the flow and form the powder jet a spring-loaded valve inserted in the body cavity with the possibility of axial movement to close the opening, T-r. "Tplyu kLaPaN DLI pereshil uiocpv-ini, a certain length. P ° P ° W "° C ™ 5pr kinematically connected to the trigger, otlipo trunk 8 is fed through a replaceable 15 tank 9 on the fire. Compared with the fact that, in order to increase reliability, the valve is designed as a piston, the surface of which is directed toward the nozzle of the body passes into a truncated cone, while at the end of the latter, the valve is designed as a piston, directed towards the nozzle of the housing, the surface of which passes into a truncated cone, while at the end of the latter the bore of the hole in the handle of the gun may vary depending on the magnitude of the piston stroke -----,, valve 3 that allows you to adjust the 20 not through groove, the walls of which have the consumption of powder supplied to extinguish the shape of a cone with a top at the extreme point the longitudinal axis of the piston face, which forms a cone, passing through the point of the greatest groove depth, the fire. A through groove 14, made in the face surface of the piston, allows to smoothly change the direction of movement of the gas-powder flow and form a jet with a relatively uniform distribution of the powder over its cross section due to 25 parallel to the axis of the handle, and the profile of the base of the cone corresponds to the hole in the wall of the housing. that the shape of the flow section in the locking organ approaches the circle. Claims of the invention. A hand-held fire extinguisher in the form of a pistol, comprising a cylindrical hollow body with a nozzle located at the end, fixed obliquely to the body and having a connecting element for a fire hose a hollow handle, the cavity of which is connected to the ero wall of the body and axially moving the spring loaded valve to close the hole, NY CLAPAN DLI peresinil uiocpv-ini, kinematically associated with a trigger, characterized in that, in order to increase reliability, the valve is designed as a piston, the body directed to the nozzle of the body passes into a truncated cone, while at the end of the latter ----,,, n, and forming a cone, passing through the point of the greatest depth of the groove, parallel to the axis of the handle, and the profile of the base of the cone corresponds to the hole in the wall of the housing. 1 g 1 FIG. 2 Fi.Z