RU127640U1 - BARREL NOZZLE SPRAY - Google Patents

Abstract

1. The nozzle-sprayer for a fire barrel, comprising a cylindrical body with a flow regulator installed inside and with an output channel in the form of free space of a conical shape, a screen limited to the inside, made in the form of a bell, characterized in that the flow regulator is made in the form stabilizer, the screen is mounted on the end of the stabilizer, on the outside the output channel is limited by a guide in the form of a sleeve turning into a bell, on the outer surface of the housing there is a slider with both by sintering the possibility of its reciprocating movement along the outer surface of the housing, while the slider is connected by a tape thread to a pusher fixed on the housing, and an additional helm is installed on the slider to enable the guide to move relative to the slider. 2. A spray nozzle for a fire barrel according to claim 1, characterized in that the function of moving the guide relative to the slide is provided using a ball placed in the corresponding hole of the guide so that it can move along the screw gutter of the slide. The spray nozzle for a fire barrel according to claim 1, characterized in that the pusher is fixed to the housing using a bulk bearing, and ribs are made on the pusher.

Description

The utility model relates to fire fighting equipment, namely to the nozzle of a gun carriage for supplying a fire extinguishing liquid in a jet and raster modes.

Known working head of a manual fire barrel, containing a cylindrical body, inside which there is a nozzle with a central cavity tapering towards the exit and which is connected with the housing and the formation of an annular cavity between the inner surface of the housing and the outer surface of the nozzle, while the device is located in the annular cavity in the exit zone with guide channels for directing water in raster feed mode, and in the entrance zone the body and nozzle are made with connection elements for a three-mode crane distribution tion manual fire barrel apparatus (GOST 9923 - 80 "Trunk the fireman manual", technical specifications, 1980).

The disadvantage of this working head is the lack of efficiency in the raster feed mode, due to the fact that the output guide channels for supplying water in the raster mode are unregulated and small in size. As a result of strong throttling and a significant drop in pressure, the raster water flow takes the form of a droplet water fog of weak strength and a small scattering angle. In addition, this nozzle is designed for the use of purified water, since getting into the guide channels of non-resident bodies with dimensions exceeding the size of the outlet, leads to clogging, which requires a feed stop and channel cleaning. Naturally, in a fire fighting environment, such a stop is unacceptable.

It should also be noted that the use of the known head in relation to fire monitors requires certain design improvements.

The USSR copyright certificate No. 910167 / KL is known. А62С 31/02 publication of 1982 "Nozzles for a fire barrel".

The known nozzle contains a nozzle body with a confuser channel and a nut covering it with a gap, has through holes evenly around the perimeter, communicating with the nozzle confuser channel in the place of its small narrowing, and a gap is made between the nozzle and the nut, while the axis of the holes are located at an acute angle to the axis of the nozzle.

The disadvantages that impede the use of the known nozzle include the inability to adjust the pressure and spray angle.

The well-known "Method and device for the formation of a protective curtain in fire distributors" (copyright certificate No. 69016 class 61a, 16/01 publication 1947). The device presented in this invention is intended to implement the proposed method, for which one end is screwed onto the fire barrel. A conical nozzle is mounted on the thread at the other end of the sprayer. In the inner cavity of the water atomizer, pressure regulator with a system of curved blades is fixed with pressure bolts. In the output channel of the conical nozzle there is a screen in the form of an annular box with a central channel passing into the outlet bell.

Part of the screen enters the nozzle output channel with the formation of a free conical space with an axial input between them and the channel wall.

A system of radial cylindrical channels is drilled in the wall of the screen, which are blocked by a locking-adjusting ring with holes equal to the number of channels

The flow regulator (guiding apparatus) ensures that the central part of the torch is filled with water.

The taper angle depends only on the amount of water going to form a curtain, which is formed by part of the stream exiting through the radial channel system.

The amount of water spent on the curtain is controlled by the degree of opening of the openings of the radial channels by means of a locking ring.

The disadvantages that prevent the use of the known device include the inability to independently adjust each of the parameters: flow rate and spray angle.

This design provides only dependent adjustment of one parameter from another.

The closest technical solution to the claimed nozzle-spray is the invention according to copyright certificate No. 6916, which is selected as a prototype.

The task the true utility model is aimed at: providing independent adjustment of the angle of the spray pattern and adjustment of water flow.

The technical result achieved when using this nozzle spray provides two independent adjustments:

- spray angle adjustment from a continuous, compact jet to a spray

- with a torch angle of at least 110 degrees (protective curtain);

- adjustment of water flow from 5 l / s to 40 l / s.

This allows its use in all fire monitors (stationary and portable) trunks with a maximum productivity of 20 l / s and 40 l / s.

The achievement of the specified technical result is ensured by the fact that the nozzle-sprayer for the fire barrel, including a cylindrical body, with a flow regulator installed inside, and with an output channel in the form of free space of a conical shape, bounded on the inside by a screen made in the form of a bell, characterized in that the flow control is made in the form of a stabilizer, the screen is installed at the end of the stabilizer, from the outside the output channel is limited by a guide in the form of a sleeve, the transition of boxes in the socket, a slider is installed on the outer surface of the housing with the possibility of its reciprocating movement along the outer surface of the housing, while the slider is connected by a tape thread to the pusher fixed on the housing, and an additional helm is installed on the slider to allow the guide to move relative to the slider.

The nozzle nozzle for a fire barrel with the function of moving the guide relative to the slider can be provided, for example, by means of a ball placed in the corresponding hole of the guide so that it can also move along the helical trough of the slider.

The spray nozzle for a fire barrel with a pusher can be fixed on the housing, for example, using a bulk bearing.

The essence of the utility model is illustrated in the drawing.

In Fig.1 shows a nozzle spray in the context; figure 2 rendered stabilizer, view A; figure 3 presents a section bB of the pusher with a rib (G); figure 4 shows a cross section of a bulk bearing (BB).

The device is a cylindrical body -1, installed inside the flow regulator in the form of a stabilizer -2 (type A), the output channel -3 is conical in shape, bounded on the inside by a screen -4, which is installed on the end of the stabilizer (2) and is made in the form bell From the outside, the output channel (3) is limited by a guide -5, made in the form of a sleeve, passing into a bell. A slider - 6 is installed on the outer surface of the casing (1) with the possibility of its movement along the outer surface of the casing (1) and connected with a pusher -7. On the slider (6) the helm is installed - 8 with the possibility of moving the guide (5) relative to the slider (6). In the pusher (7) in one of the ribs (G), a fixing ball -9 pressed against the housing (1) is placed, pressed by the spring -10, which in turn is compressed by the set screw -16. On the housing (1), several -11 holes are made. The pusher (7) is fixed to the housing (1) using a bulk bearing (BB) with balls -12 and an adjusting screw -13, which is included in the longitudinal groove -14 in the housing (1), made to the width of the screw (13). A hole for the ball -15 is made in the guide (5), and a spiral groove (not shown in the drawing) is made on the slider (6), the ball (15) placed in the hole of the guide (5) is simultaneously located in the slider groove (6). To ensure the movement of the slider (6) along the body (1), the slider (6) is connected by a tape thread -17 to the pusher - (7) fixed on the body (1).

The spray nozzle is designed to form and direct a compact jet or sprayed water jet, as well as to control the flow.

The nozzles are installed on the barrel (not shown in the drawing) by screwing the cylindrical body (1) onto the barrel outlet pipe. A stabilizer (2) is installed inside the housing (1), which serves to “equalize” the water flow, and the housing (1) ends with an outlet channel (3) of a conical shape. A shield (4) is installed at the end of the stabilizer (2), which directs the flow of water to the inner surface of the guide (5) and then to the exit.

Spray adjustment is provided by turning the control wheel (8), the guide (5) moves along the nozzle axis and the jet shape changes.

The extreme extended position of the guide (5) forms a compact straight jet.

The extreme retracted position (left movement in the figure) forms a maximally sprayed jet with a torch angle of at least 110 degrees.

Adjust the spray angle as follows.

The steering wheel (8) is mounted on the guide (5). A hole for the ball (15) is made in the guide (5), and a spiral groove (not shown) is made on the slider (6). The ball (15), placed in the hole of the guide (5), is simultaneously located in the groove of the slider (6). The ball (15) is closed by a steering wheel (8), fixed with screws on the guide (5).

When the steering wheel is turned, the ball (15) moves along the spiral groove of the fixed slide (6) and pushes the guide (5), implying movement forward or backward.

Moving forward - reduce the angle of the jet plume up to a straight compact jet. Moving back - the guide, on the contrary, increases the angle of the torch up to the protective curtain.

The flow rate is adjusted by turning the pusher (7), mounted on the housing (1). The pusher (7) informs the reciprocating movement of the slider (6) with which it has a threaded connection (17). Moving along the body (1), the slider (6), on which the stabilizer (2) is mounted with the screen (4) increases or decreases the water flow from 5 l / s to 40 l / s. The pusher (7) is fixed on the housing (1) with the ball (12) of the bulk bearing (BB).

When the pusher (7) is rotated, the ball (9) enters one of the holes (11) located on the housing (1), which allows to obtain the indicated fixed water flow:

for trunks LS-S20U (stationary) and LS-P20U (portable) - 15 l / s; 20 l / s, 25 l / s;

for LS-S40U (stationary) and LSP40U (portable) shafts - 20 l / s, 30 l / s, 40 l / s.

The flow rate is determined by the gap between the slider (6) and the screen (4).

When the pusher (7) is turned counterclockwise (from the operator's side), the slider (6) is moved forward and the clearance with the screen (4) is reduced, i.e. consumption is reduced.

When the pusher (7) is turned clockwise, the slider (6) moves back, which increases the clearance with the screen, i.e. increases consumption.

This reciprocating movement is provided by a threaded connection of the pusher (7) with the slider (6) and the screw (13) screwed into the slider (6) and included in the longitudinal groove (14) in the housing (1). The screw (14) prevents the slider (6) from turning spontaneously relative to the housing (1)

Tests of fire monitors, differing in different throughput capacity of the supply armature with a maximum productivity of 20 l / s and 40 l / s, but equipped with the proposed nozzle-sprayer, were carried out.

The tests were carried out in accordance with GOST P 51115-97 “Fire fighting equipment. Fire monitors combined. General technical requirements. Test Methods. "

Tests have confirmed the operability of the nozzle-sprayer and the provision of independent adjustment of two parameters: spray angle and fluid flow.

Adjustment of the spray angle when using the proposed nozzle-spray provided both a continuous compact stream and any given angle of the spray torch to the angle providing the formation of a protective curtain (from 90 to 110 degrees). Adjustment of fluid flow was provided in the range from 5 l / s to 40 l / s.

The proposed nozzle spray is designed to form water jets, and can also be used to supply fire extinguishing foam. Foam supply is provided at an angle of 30 °, which is considered the most optimal for supplying foam.

The test results presented in the Table confirm that the proposed spray nozzle is aimed at solving the problem and, when used, ensures the achievement of the specified technical result.

Table TECHNICAL CHARACTERISTICS OF FIRE LAPTET BARRELS WITH SPRAY NOZZLE No pp Indicator LS-S20 (15.25) LS-P20 (15.25) LS-S40 (20.30) LS-P40 (20.30) one Working pressure, MPa 0.6 ^+0.05 2 Water consumption with 3-position regulation, l / s fifteen twenty 25 twenty thirty 40 3 The flow rate of an aqueous solution of a foaming agent, l / s fifteen twenty 25 twenty thirty 40 four Range of a stream (on extreme drops), m, not less - continuous water 55 58 60 58 61 67 - sprayed (at a torch angle of 30 °) 51 53 56 55 57 60 - sprayed (at a torch angle of 90 °) 45 52 55 fifty 55 61 - sprayed (at a torch angle of 110 °) 42 fifty 52 48 52 58 - solid foam (spray angle 30 °) 48 53 55 52 55 60 Range of change of a torch angle of a sprayed water stream, deg. 0 ° -110 ° Multiplicity of foam at the exit from the trunk, not less 7.0

Claims (3)

1. The nozzle-sprayer for a fire barrel, comprising a cylindrical body with a flow regulator installed inside and with an output channel in the form of free space of a conical shape, a screen limited to the inside, made in the form of a bell, characterized in that the flow regulator is made in the form stabilizer, the screen is mounted on the end of the stabilizer, on the outside the output channel is limited by a guide in the form of a sleeve turning into a bell, on the outer surface of the housing there is a slider with both by sintering the possibility of its reciprocating movement along the outer surface of the housing, wherein the slider is connected by a tape thread to a pusher fixed on the housing, and an additional helm is installed on the slider, with the possibility of moving the guide relative to the slider. 2. The nozzle-sprayer for a fire barrel according to claim 1, characterized in that the function of moving the guide relative to the slider is provided by means of a ball placed in the corresponding hole of the guide so that it can be moved along the screw gutter of the slider. 3. The nozzle-sprayer for a fire barrel according to claim 1, characterized in that the pusher is fixed to the housing using a bulk bearing, and ribs are made on the pusher.

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