RU2208464C1 - Apparatus for pulsed spraying of substance - Google Patents

Abstract

FIELD: equipment for spraying substance in gaseous medium, preferably, air. SUBSTANCE: apparatus has casing comprising striking device for igniting powder charge, and trunk for incorporating hermetically sealed container filled with substance to be sprayed. Container is made elastic and may be destructed. Apparatus is equipped with powder charge combustion chamber communicated with trunk channel and braking or expanding chamber positioned between combustion chamber and trunk channel. Braking chamber has end wall and peripheral openings for communicating braking chamber with trunk channel. Cutting edge is formed in trunk mouth. Apparatus may be used for spraying substantial amounts of substance for short period of time, in particular, for fire-fighting. EFFECT: increased efficiency in spraying powder or liquid substance. 1 dwg

Description

 The invention relates to the field of spraying a substance in a gaseous medium, preferably in air, and can be used to spray a significant amount of the substance in a short period of time, in particular for fire fighting purposes.

 Known devices for throwing a projectile laid in the barrel from the muzzle, due to the energy of the powder gas, which is generated by a separate charge. One of these devices is the German anti-tank grenade launcher GzB-39 (Handbook of small arms of foreign armies. Military publishing house of the Ministry of Armed Forces of the USSR; Moscow, 1947, p. 89). Grenade launcher consists of a gun and mortar. Mortirka is screwed onto the muzzle of the barrel. The grenade is put into the mortar, and a shot is made by a special blank cartridge. An impulse of powder gases throws a grenade in the direction of fire.

 The disadvantage of this device is that its design does not provide for the rupture of the container and the release of its contents when the container leaves the barrel.

 The closest in technical essence and the achieved technical result to the claimed device is a device for pulsed atomization of a substance in a gas medium according to the application of the Russian Federation 94006612, 02.21.1994, IPC 6 A 62 C 13/22, consisting of a housing including a striking device for igniting a powder charge , barrel for placement of a sealed container with a spray substance.

 The disadvantage of this device is that it is designed to spray powder. The use of this device for spraying liquid is not so effective, because with the direct action of gas on the sprayed liquid, it is divided into a central stream of large droplets, which has high kinetic energy, and a finely dispersed component, rapidly losing speed due to air resistance. As a result, not the entire mass of the extinguishing agent effectively affects the fire.

 The objective of the invention is to provide a device for pulsed atomization of a substance in a gaseous medium, providing a technical result consisting in increasing the atomization efficiency of a substance — both powder and liquid — by pulsating the charge of a sprayed substance with high gas pressure.

 This technical result in a device consisting of a housing including a striking device for igniting a powder charge, and a barrel for accommodating a sealed container with a spray substance, is achieved by the fact that the container is flexible with the possibility of destruction, the device is equipped with a combustion chamber of a powder charge communicating with the barrel channel brake or expansion chamber located between the combustion chamber and the bore of the barrel having an end wall that prevents the direct exit of the flow g aza into the bore, and the holes connecting the brake chamber to the bore and located on the periphery, in the muzzle of the barrel made cutting edge in contact with the walls of the container.

 The essence of the device is illustrated by the drawing and the following description of its operation.

 The device consists of a housing (1) and a barrel (2) for accommodating a sealed container (3) with a spray substance (4). A striking device (5) is placed in the housing (1), consisting of a bolt (6), a striker (7), a trigger (8) and a trigger (9). The transition channel (10) connects the combustion chamber (11) to the brake chamber (12) having an end wall (13) and peripheral holes (14) connecting the brake chamber (12) to the barrel channel (15). In the combustion chamber (11) is a powder charge (16). A cutting edge (17) is made on the barrel (2), which is in contact with the walls of the container (3).

 Before the shot, a container (3) with the sprayed substance (4) is laid in the barrel channel (15), and a powder charge (16) is charged into the combustion chamber (11). After pulling the trigger (9), the trigger (8) is released, which strikes the hammer (7). Drummer (7) ignites the cartridge capsule. Powder gases flow through the transition channel (10) from the combustion chamber (11) into the brake chamber (12), and from it through the holes (14) into the barrel channel (15). Since the pressure is evenly distributed along the bottom of the container (3), the bottom of the container acts as an elastic membrane, transferring the pressure of the powder gases into the container (3). Under the influence of internal pressure, the free part of the container (3) expands, comes into contact with the cutting edge of the barrel and separates, while the entire mass of the sprayed substance (4) of both powder and liquid is uniformly sprayed and moves in the direction of fire. The remaining part of the container (3) flies out of the barrel (2) under the influence of residual pressure at a lower speed.

 For the next shot, it is necessary to insert the next container (3) into the barrel channel (15) until it stops at the bottom of the table and reload the striking device (5). The device is ready for the next shot.

 To facilitate the operation of the device, disposable containers with a sprayable substance with a capacity of 0.5 - 0.7 l can be carried in the pockets of the unloading vest.

 As a source of gas in the device, a standard powder cartridge (a blank cartridge for small arms or a mounting cartridge) can be used, and the ignition of the powder charge can be carried out using the trigger mechanism.

 For quick replacement of the powder cartridge, the device can be equipped with a manual or automatic reloading mechanism associated with the trigger mechanism.

 As was shown, the proposed device provides effective atomization of both powder and liquid.

Claims (1)

 A device for pulsed atomization of a substance in a gas medium, consisting of a housing including a striking device for igniting a powder charge, a barrel for accommodating a sealed container with a spray substance, characterized in that the container is flexible with the possibility of destruction, the device is equipped with a combustion chamber of a powder charge in communication with the barrel channel, and the brake chamber located between the combustion chamber and the barrel channel, while in the brake chamber there is an end wall and holes connected sagging brake chamber with a bore and located on the periphery.