JPH04114666A - Water atomizing spraying nozzle - Google Patents

Abstract

PURPOSE:To spray water without downward water spraying nor any water attack on the nearest objects by a method wherein when a water atomizing and spraying nozzle rotates downward and its angle becomes lower than a set value, water atomizing and spraying angle of the water atomizing and spraying nozzle is automatically increased. CONSTITUTION:Waterstream is widened along a cone shape consisting of a body 1a, an outer cylinder 1c and a valve 1b, and the waterstream rotate a rotor 1e. This effect forms a good spraying, a good water atomizing and spraying can be obtained in a wide range of middle distance and especially of near distance. Further the water atomizing and spraying nozzle 1 is connected at a base part to an elevation/depression rotating joint 4, so that the angle of elevation or depression phiv of the nozzle 1 can be changed by an elevation/ depression driving means 5, and thus the nozzle 1 can spray water just upward and just downward. The elevation/depression angle is detected by an elevation/ depression angle detector 6. All of them are mounted on a rotary stand 7 so that they can be rotated by a desired angle in the horizontal direction by a rotation driving means 8.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a water spray nozzle device, and more specifically, when water is sprayed downward below a set value, the water spray angle of the spray water nozzle is automatically increased. The present invention relates to a spray water nozzle device that allows soft rain to fall.

"Prior Art" Conventionally, water nozzles have been used as fire extinguishing equipment for large indoor spaces such as ball game stadiums and exhibition halls. The elevation angle of this water spray nozzle is fixed at an angle that allows water to be sprayed at the maximum range, and the water spray distance is often varied from "near" to "far" by changing the water spray pressure.

Furthermore, in recent years, there has been an increase in the number of cases in which amusement parks are built inside large indoor buildings. In this case, the play equipment that could be the source of a fire is quite tall, and some even reach the ceiling.

In such facilities, it is not possible to fix the elevation angle and extinguish fires by spraying water over the entire distance.

For this reason, we use a water spray nozzle that can adjust the spray angle to softly rain fire extinguishing water over a wide area without mixing pressurized air into the jet, and effectively spray water onto all structures in large spaces. For this purpose, the present inventors have developed a water discharge nozzle device that individually changes the horizontal rotation angle, elevation angle, spray water discharge angle, and water discharge pressure of the water spray nozzle.

However, the fact that the water spray angle and the elevation angle can be controlled separately means that it is also possible to spray water in a bar shape when the angle of elevation is high, which can cause a particularly strong impact on nearby objects, causing damage to structures in the worst case. There was a risk of a person falling.

``Problems to be Solved by the Invention'' The present invention has been made in view of the above points, and uses a water spray nozzle that can change the water spray angle from a rod-like shape to a spray-like shape as appropriate. This spray water nozzle device is capable of adjusting the horizontal rotation angle, elevation angle, spray water spray angle, and water spray pressure as appropriate, and the spray water spray nozzle rotates downward until the angle is below a set value. It is an object of the present invention to provide a water spray nozzle device which automatically increases the water spray angle of the water spray nozzle when the water drops, and makes the water fall softly.

"Means for Solving the Problems" Therefore, the gist of the present invention is to (1) use a water spray nozzle that can change the water spray angle as appropriate, and to change the horizontal rotation angle of the water spray nozzle;・In a spray water nozzle device that can adjust the elevation angle, spray water spray angle, and water spray pressure as appropriate, when the spray water spray nozzle rotates downward and the angle becomes less than the set value,
A water spray nozzle device characterized in that the water spray angle of the water spray nozzle is automatically increased.

(2) Use a water spray nozzle that can change the water spray angle as appropriate, and adjust its horizontal rotation angle
This is a spray water nozzle device that can adjust the elevation angle, water spray angle, and water spray pressure as appropriate, and when the spray water nozzle rotates downward and the angle becomes less than the set value, the spray A water spray nozzle device characterized in that the water spray angle of the water spray nozzle is automatically increased, and the water spray pressure is decreased in conjunction with the water spray angle of the water spray nozzle.

It is in.

"action" Next, the operation of the present invention will be explained.

When the elevation lowering switch is operated using the elevation angle controller, the water spray nozzle gradually moves downward. When the elevation angle of the water spray nozzle becomes equal to or less than the set value, the water spray angle of the water spray nozzle automatically begins to increase.

In this case, even if the operation of the down switch is stopped midway, the water spray angle continues to increase until the water spray angle reaches the maximum water spray angle until the up switch is operated.

In addition, even when the water spray angle of the water spray nozzle is at its maximum, if the spray water density increases, the water spray pressure is automatically reduced to reduce the water spray amount and reduce the spray water density. .

Embodiment j Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory diagram of an embodiment of the present invention, FIG. 2 is a central vertical cross-sectional view of a water spray nozzle in a rod-shaped water discharge state, FIG. 3 is a central longitudinal cross-sectional view of a spray water nozzle in a spray water discharge state, and FIG. The figure is the first
It is a graph which shows the relationship between the elevation angle of the spray water discharge nozzle of the example of a figure, and the spray water discharge angle.

In FIG. 1, reference numeral 1 denotes a water spray nozzle, and a spray water spray drive device 2 changes the spray water spray angle θf to create a continuous water spray pattern from rod-shaped water spray to spray water spray.

This water spray angle θf is detected by a water spray angle detector 3 consisting of a rotary encoder.

The spray water nozzle 1 includes a main body 1a, a valve body 1b, an outer tube 1c, a hydraulic cylinder 1d for controlling the spray water angle as a spray water drive device 2, and an outer tube 1.
The jet stream is controlled at an angle of 0 degrees to 90 degrees depending on the positional relationship between c and the main body 1a. This water spray angle is detected by a spray water angle detector 3 consisting of a rotary encoder, and is transmitted to the central console.

FIG. 2 shows a state in which water is discharged in a rod shape, and shows how the water flow is aligned with the axis of the nozzle by the outer cylinder 1c. Since this rod-shaped water spray is sprayed from a large diameter portion of φ120, the impact of the water spray is smaller than that of water spray from a general water cannon gun.

Figure 3 shows the state at the maximum spray angle, with the main body 1a and the outer cylinder 1
The water flow spreads along the cone shape formed by the valve body 1b and the valve body 1b, and this water flow rotates the rotor 1e.

This effect forms a good spray, so it is possible to spray water well over a wide range from medium distances to particularly short distances.

The base of the spray water nozzle 1 is connected to an elevation rotation joint 4, and the elevation angle and depression angle φν are changed by an elevation drive device 5, allowing water to be sprayed from directly above to downwardly. Further, the elevation angle is detected by the elevation angle detector 6.

Furthermore, these are mounted on a swivel base 7, and can be rotated horizontally to a desired angle by a swivel drive device 8. The turning angle is detected by a turning angle detector 9. Note that the turning angle detector 9 uses a general rotary encoder or the like.

10 is a water supply pipe that supplies a fire extinguishing agent from a pressurized water supply device (not disclosed) to the spray water nozzle 1.

Reference numeral 1 is an automatic valve for pressure adjustment provided in the middle of the water supply pipe 10, and uses an electric valve or the like. 12 is a pressure sensor for detecting water discharge pressure, which converts pressure information into an electrical analog signal of 4 to 20 mA or 1 to 5 cm.

13 is an elevation angle operation device; 14 is an elevation angle-spray water discharge angle interlock controller that operates the spray water spray drive device 2 and the elevation drive device 5 based on information from the spray angle detector 3 and the elevation angle detector 6; Setting pressure information is sent to the water discharge pressure controller 15 as necessary.

Next, the operation of the above embodiment will be explained.

When the elevation lowering switch is operated using the elevation angle controller 13, the lowering signal is sent to the elevation angle-spray water discharge angle interlock controller 1.
Sent to 4. In conjunction with this, the elevation drive device 5 operates to rotate the spray water nozzle 1 downward. Also, the elevation angle-spray water discharge angle interlock controller 14 constantly monitors the value of the elevation angle detector 6, and when this angle is +15
When the water spray angle becomes less than 30 degrees, the water spray drive device 2 is operated to increase the water spray angle. Also, the elevation angle is = 1
When the temperature falls below 5 degrees, an instruction is sent to the water discharge pressure controller 15 to reduce the water discharge pressure to 3 kgf/ciil.

In addition, when the downward rotation signal from the elevation angle controller 13 disappears, and if the elevation angle at that time is +0 degrees or more, the operation of the spray water spray drive device 2 is immediately stopped, and the elevation angle at that time is When is below +0 degrees, the water spray drive device 2 continues to operate until the information from the water spray angle detector 3 reaches +90 degrees.

FIG. 4 is a graph explaining the above action. → C-4-E, and when the downward rotation stops at -7 degrees, for example, A-B → C-4D in Figure 4 (A), and on the other hand, up to +0 degrees, for example, +7 degrees. When the downward rotation stops, the position becomes A-+B-+C in FIG. 4(B).

"Effects of the Invention" Since the present invention has the above-described configuration and operation, it has the following effects.

■By increasing the spray water angle as the elevation angle of the water spray nozzle decreases, water can be sprayed downward and onto nearby targets without causing water hammer.

(2) Furthermore, by reducing the water spray pressure in conjunction with the water spray angle of the water spray nozzle, effective firefighting can be carried out with less water damage.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention, FIG. 2 is a central vertical cross-sectional view of a water spray nozzle in a rod-shaped water discharge state, FIG. 3 is a central cross-sectional view of a spray water nozzle in a spray water discharge state, and FIG. The figure is the first
It is a graph which shows the relationship between the elevation angle of the spray water discharge nozzle of the example of a figure, and the spray water discharge angle. 1 ・ 2 ・ 3 ・ 4 ・ 5 ・ 6 ・ 8 ・ 9 ・ 11 ・ 12 ・ 13 ・ 14 ・ 15 ... Swivel base turning drive device Swing angle detector 1.0 ... Automatic valve for water supply piping pressure adjustment Pressure sensor Elevation angle operator Elevation angle - spray water discharge angle interlock controller Water discharge pressure controller Fig. (A) Fig. (B) 3O -Is O+/Mo15 Pot seal member +'jlJ t, -ノ

Claims (2)

[Claims] (1) Use a water spray nozzle that can change the water spray angle as appropriate, and adjust its horizontal rotation angle
This is a spray water nozzle device that can adjust the elevation angle, water spray angle, and water spray pressure as appropriate, and when the spray water nozzle rotates downward and the angle becomes less than the set value, the spray A water spray nozzle device characterized in that the water spray angle of the water spray nozzle is automatically increased. (2) Use a water spray nozzle that can change the water spray angle as appropriate, and adjust its horizontal rotation angle
This is a spray water nozzle device that can adjust the elevation angle, water spray angle, and water spray pressure as appropriate, and when the spray water nozzle rotates downward and the angle becomes less than the set value, the spray A water spray nozzle device characterized in that the water spray angle of the water spray nozzle is automatically increased, and the water spray pressure is decreased in conjunction with the water spray angle of the water spray nozzle.