RU2443444C1 - Manual ejector fire hose nozzle - Google Patents

Abstract

FIELD: fire-fighting equipment.

SUBSTANCE: invention is designed to create a manual ejector fire hose nozzle with broader functionality and efficiency. For this, at the input of the hose nozzle in the housing the ejector is installed comprising a vacuum chamber connected by its nozzle with a flow of water at the inlet, and at the outlet - in the canal inside the stock - with a diffuser, and is connected to the foam-generator through suction channels in the water-damper, as well as through a distribution chamber, a fitting, a flow control and a vacuum tube connected to the tank of foam-generator.

EFFECT: invention can significantly increase the efficiency of manual fire hose nozzles, using water or foam depending on the operational situation, selecting the desired flow of water or foam in a wide range.

1 dwg

Description

The invention relates to fire extinguishing devices, namely to fire trunks.

Known manual fire barrels, for example, ORT-50A, TU 4854-002-3430573-02, manufactured by NPP ORT LLC, Voronezh, Moskovsky pr., 22, see the catalog "Rescue Means - Fire Protection - 2004", ed -to: RIA "Security Industry".

A disadvantage of the known devices is a fixed flow rate, design flaws that reduce reliability and ergonomics.

The closest in technical essence is the device according to the patent of the Russian Federation No. 2371222, which includes a housing with a handle, a coupling head at the inlet and a head for adjusting the spray angle at the outlet, a water damper inside the housing, connected by a rod to the plate, an overlap and flow adjustment sleeve connected to the handle .

The disadvantages of this device is that to obtain a foam, it is necessary to supply a ready-made blowing agent solution to the device input, which limits the functionality of the device and reduces the efficiency of use.

The basis of the invention is the task of expanding the functionality of the device and increasing efficiency.

This goal is achieved by the fact that an ejector is installed in the housing at the barrel inlet, containing a vacuum chamber connected by a nozzle to the water flow at the inlet, and at the outlet through the channel inside the rod by a diffuser, and connected to the foaming agent through suction channels in the water damper, as well as through the distribution a chamber, a fitting, a flow regulator and a vacuum tube connected to the foaming agent tank.

The proposed technical solutions allow you to quickly turn on either in the foam supply mode, or in the water supply mode, which significantly expands the functionality of the device, increases work efficiency.

The author does not know devices with distinctive features in accordance with the claimed technical solutions.

The invention meets the requirements of novelty and positive effect, as well as the criterion of "significant differences".

Figure 1 presents a General view of a manual ejector fire barrel.

The device includes a prefabricated housing 1 with a handle 2, a coupling head 3 at the inlet of the housing 1 and a head for adjusting the spray angle 4 at the outlet of the housing 1, a water damper 5 inside the housing 1, connected by a rod 6 to the plate 7, an overlap and flow control sleeve 8 connected rotational-translational movement with the handle 9. At the inlet of the barrel in the housing 1 in front of the coupling head 3 is installed an ejector containing a vacuum chamber 10 connected by a nozzle 11 to the water flow at the inlet, and at the outlet through the channel 12, inside the stem 6, with a diffuser 13, form between the plate 7 and the screen 14, and connected to the foaming agent through the suction channels 15 in the water settler 5, the distribution chamber 16, the fitting 17, the flow rate control agent of the foaming agent 18 for a given concentration and the vacuum tube 19 connected to the foaming agent container, for example, in the form of a satchel ( not shown in the diagram).

The device operates as follows.

In preparation for operation, a manual ejector fire barrel with a coupling head 3 is attached to the connecting head of the fire hose (not shown in the diagram). Before the water supply, the handle 9 and the flow regulator 18 are set to the "Closed" position. To supply water, the barrel is held in hand by the handle 2 and is sent to the combustion zone. By rotating the handle 9, the jet is supplied to the combustion zone and at the same time the required water flow is set. In this case, when the handle 9 is rotated, the rotational-translational movement of the flow sleeve 8 takes place and an annular slot gap opens between the flow sleeve 8 and the poppet valve 7. The size of this gap determines the flow rate of water at the outlet of the barrel. The rotation of the atomization angle adjustment head 4 sets the shape of the jet: from direct to spray, at an angle of 120 degrees. When you open the flow controller of the foaming agent 18 to a predetermined concentration, the vacuum generated in the vacuum chamber 16 of the ejector, when the water jet moves from the nozzle 11, ejects the foaming agent through the suction channels 15, the distribution chamber 16, the nozzle 17 and the vacuum tube 19 from the backpack container of the foaming agent, which Included in the equipment of a fireman-shovel. The foaming agent with water through the channel 12 enters the diffuser 13, where upon impact on the screen 14 is mixed into an aqueous solution of the foaming agent, which is picked up by the main stream of water and is formed into a stream at the nozzle exit. In flight, an aqueous solution of the blowing agent in the area of the crushing jet under the influence of air resistance is converted into foam.

The proposed manual ejector fire barrel allows you to quickly turn on either in the foam supply mode or in the water supply mode, to regulate the flow of water or foam in a wide range and is an effective and economical means of fighting fires.

Unlike the known ones, the proposed manual ejector fire barrel has an ejector built in the barrel with a foam concentration regulator and a backpack container with a foam generator included in the kit.

The proposed technical solutions can significantly increase the efficiency of hand-held fire trunks, using water or foam depending on the operating environment, choosing the desired flow rate of water or foam in a wide range.

Claims (1)

Manual ejector fire barrel, which includes a housing with a handle, a coupling sleeve at the inlet and a head for adjusting the spray angle at the outlet, a water damper inside the housing, connected by a rod to the plate, an overlap and flow adjustment sleeve connected to the handle, characterized in that at the barrel inlet in the case in front of the coupling head, an ejector is additionally installed, containing a vacuum chamber connected by a nozzle to the water flow at the inlet, and at the outlet through the channel inside the rod, with a diffuser formed between the plate and the screen ohm, and connected to the blowing agent via suction channels in vodouspokoitele and through the distribution chamber, a nozzle, and the vacuum concentration regulator tube connected with the foaming capacity.

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