JP2021019887A - Water gun apparatus - Google Patents

Abstract

To enable downsizing of a water source water tank by reducing a water discharge amount while keeping a water discharge locus from a nozzle.SOLUTION: A water gun apparatus sprays water for fire-fighting toward a fire source location in a warning area. On a piping system for supplying water for fire-fighting to a nozzle 26 is provided a flow rate control valve 22 for changing a flow passage area using periodic oscillation of a butterfly valve body 34 to periodically change an amount of water discharged from the nozzle 26. The flow rate control valve 22 maximizes flow passage area at a neutral position of the butterfly valve body 34 to maximize the amount of water discharged from the nozzle 26, and decreases the flow passage area at a position of the valve body having the predetermined maximum oscillation angle θ taking the neutral position as the center to reduce the amount of water discharged from the nozzle 26 to a predetermined water discharge amount equal to or larger than 50% of the maximum discharge amount.SELECTED DRAWING: Figure 2

Description

The present invention relates to a water discharge gun device that protects a large space building or a large-scale high ceiling space by discharging fire extinguishing water.

Conventionally, a water gun system has been installed as a fire extinguishing system for a large space building such as a dome stadium or an event facility or a facility having a large high ceiling space. The water discharge gun system monitors the monitoring area by optical horizontal and vertical scanning with a scanning fire detector, detects the fire from the received signal by the energy of the fire flame, and calculates the position of the fire source to be controlled. However, the water discharge gun device is directed to the position of the fire source by horizontal turning, and the fire extinguishing water is sprinkled and extinguished by controlling the water discharge pressure according to the distance to the fire source.

The water discharge pressure control of the water discharge gun device detects the water discharge pressure of the water discharge gun with a pressure sensor, and makes the deviation from the target water discharge pressure set based on the distance to the fire source zero. The opening degree of the electric valve provided in the pipe for supplying pressurized fire extinguishing water is feedback-controlled.

Japanese Unexamined Patent Publication No. 2006-223436 Japanese Unexamined Patent Publication No. 2006-223440

However, in such a conventional water discharge gun device, the effective water discharge distance is, for example, 0 to 87 meters, and the maximum water discharge amount is 3,500 liters / minute. For example, a water discharge time of 30 minutes is 105,000 liters. It becomes the amount of water discharged, and in order to secure such amount of water discharged, it is necessary to secure a space on the basement floor and construct a large water source water tank, and there is a problem that the cost of fire extinguishing equipment using a water discharge gun device increases. is there.

An object of the present invention is to provide a water discharge gun device capable of reducing the amount of water discharged while maintaining the water discharge trajectory from a nozzle and making the water source water tank smaller.

(Water discharge gun device)
The present invention is a water discharge gun device that sprays fire extinguishing water toward a fire source position in a caution area.
The piping system that supplies fire extinguishing water to the nozzle is characterized by being equipped with a flow control valve that changes the flow path area by periodically swinging the valve body and periodically changes the amount of water discharged from the nozzle. And.

(Flow control valve)
The flow control valve maximizes the flow path area at the neutral position of the valve body, maximizes the amount of water discharged from the nozzle, and sets the flow path area at a predetermined maximum swing angle of the valve body centered on the neutral position. The amount of water discharged from the nozzle is reduced to a predetermined amount of water discharged at 50% or more of the maximum discharge amount.

(Valve body)
The flow rate control valve periodically swings a butterfly valve body or a ball valve body as a valve body to change the flow path area.

(Swing of valve body by lever link mechanism)
The flow control valve is provided with a lever link mechanism as a valve body swing mechanism that swings the valve body periodically.
The lever link mechanism includes a first link, a second link, and a third link, one end of the first link is connected to a motor drive shaft, and one end of the second link is rotatable at the other end of the first link. The other end of the third link is rotatably connected to the other end of the second link, and the other end of the third link is connected to the drive shaft of the valve body, and the first link is connected at a constant speed by a motor. The valve body is oscillated by the oscillation of the third link when it is rotationally driven by.

(Swing of valve body by swing slider link mechanism)
The flow control valve is provided with a swing slider link mechanism as a valve body swing structure that swings the valve body periodically.
The swing slider link mechanism includes a driven link and a slider slidably provided in a slide groove formed in the axial direction of the driven link, and one end of the driving link is connected to the drive shaft of the motor and the driving link is connected. The other end is rotatably connected to the slider, one end of the driven link is connected to the drive shaft of the valve body, and the valve body swings due to the swing of the driven link when the driving link is rotationally driven at a constant speed by a motor. Let me.

(Vibration of valve body due to changes in spring force and flowing water force)
The valve body of the flow control valve is set to the initial position where the flow path area is minimized by a predetermined maximum swing angle with respect to the neutral position of the valve body which maximizes the flow path area and the maximum amount of water discharged from the nozzle. It is held by the urging by the spring member, and the valve body is oscillated by the swinging force received by the water flow at the initial position and the change in the spring force to return to the initial position by the spring member.

(Basic effect)
According to the present invention, in a water discharge gun device that sprays fire extinguishing water toward a fire source position in a caution area, the flow path area is changed by periodically swinging a valve body to the device body that supplies fire extinguishing water to a nozzle. Since a flow control valve is provided to periodically change the amount of water discharged from the nozzle, the valve body of the flow control valve swings at a frequency cycle of, for example, 0.1 to 2.0 Hz, so that the nozzle The amount of water discharged from the water fluctuates intermittently (pulse-like or sinusoidal), and the amount of water discharged per unit time can be reduced to, for example, about 60% of the conventional continuous water discharge. The amount of water stored to secure the water is reduced, which makes it possible to reduce the size of the water source water tank and reduce the scale and cost of the equipment.

In addition, the water flow discharged from the nozzle is high because the high-density water flow part, which is the maximum amount of water discharged, and the low-density part, where the amount of water discharged is narrowed, are intermittently discharged as the valve body of the flow control valve swings. The flight of the dense water flow part maintains the same water discharge trajectory as the continuous water discharge, and the high density water flow part and the low density water flow part alternately and continuously hit the sprinkling range to improve the striking force by the water discharge and protect it. It makes it possible to further improve the performance.

(Effect of flow control valve)
In addition, the flow control valve maximizes the flow path area at the neutral position of the valve body and maximizes the amount of water discharged from the nozzle, and the flow path at a predetermined maximum swing angle of the valve body centered on the neutral position. Since the area is reduced to reduce the amount of water discharged from the nozzle to a predetermined amount of 50% or more of the maximum discharge amount, the amount of water discharged from the nozzle is 100% when the maximum amount of water discharged is 100%. For example, it can be changed periodically in the range of 60%, and water can be discharged intermittently (pulse-like or sine-wave-like), and even if the flow control valve does not move due to a failure or the like, 50 A predetermined amount of water discharged of% or more can be secured.

(Effect of valve body)
Further, in the flow control valve, the butterfly valve body or the ball valve body is periodically swung as the valve body to change the flow path area, so that the valve body of the flow control valve is passed through the water discharge gun device. When a butterfly valve body or a ball valve body is arranged in the air, the amount of water discharged can be periodically increased or decreased by smooth swinging even when the force due to the flow of fire extinguishing water is received.

(Effect of swinging valve body by lever link mechanism)
Further, the flow control valve is provided with a lever link mechanism as a valve body swing mechanism that periodically swings the valve body, and the lever link mechanism includes a first link, a second link, and a third link. One end of the 1 link is connected to the motor drive shaft, one end of the second link is rotatably connected to the other end of the first link, and the other end of the third link is rotatable to the other end of the second link. The other end of the third link is connected to the drive shaft of the valve body, and the valve body is swung by the swing rotation of the third link when the first link is rotationally driven at a constant speed by the motor. Therefore, the constant rotation by the motor can be converted into periodic swing by the lever link mechanism and transmitted to the valve body. By changing the rotation speed of the motor, for example, the swing frequency of the valve body can be changed to 0.1. It can be set to an appropriate frequency in the range of ~ 2.0 Hz.

(Effect of swinging valve body by swing slider link mechanism)
The flow control valve is provided with a swing slider link mechanism as a valve body swing mechanism that swings the valve body periodically, and the swing slider link mechanism is formed in the axial direction of the driven link and the driven link. A slider provided so as to be slidable in the slide groove is provided, one end of the driving link is connected to the drive shaft of the motor, the other end of the driving link is rotatably connected to the slider, and one end of the driven link is a valve body. The valve body is oscillated by the oscillating rotation of the driven link when the driving link is rotationally driven at a constant speed by the motor, which is connected to the drive shaft of the motor. It can be converted into motion and transmitted to the valve body, and by changing the rotation speed of the motor, for example, the swing frequency of the valve body can be set to an appropriate frequency in the range of 0.1 to 2.0 Hz. The structure is simpler and smaller than the lever link mechanism.

(Effect of swinging valve body due to change in spring force and running water force)
In addition, the valve body of the flow control valve springs at the initial position where the flow path area is minimized by a predetermined maximum swing angle with respect to the neutral position where the flow path area is maximized and the amount of water discharged from the nozzle is maximized. It is held by the urging by the member, and the valve body is made to swing by the swinging force received by the water flow at the initial position and the spring force to return to the initial position by the spring member, so that the drive source of the motor etc. The valve body swings due to the flow of fire extinguishing water flowing through the water discharge gun device, and the amount of water discharged from the nozzle can be increased or decreased periodically, and the structure is simple and the cost can be reduced.

Explanatory drawing showing the appearance of the water gun device Explanatory drawing which showed embodiment of the flow rate control valve using a butterfly valve body in cross section Explanatory drawing which showed embodiment of valve body swing mechanism of flow rate control valve using leverage link mechanism Explanatory drawing which showed the embodiment of the valve body swing mechanism of the flow control valve using the swing slider link mechanism. Explanatory drawing which showed the control system of the water discharge gun device by the water discharge pressure control device Explanatory drawing which showed embodiment of the flow rate control valve using a ball valve body in cross section Explanatory drawing which showed another embodiment of the flow rate control valve which swings by the change of the spring force of a spring member and the fluid force applied to a valve body.

[Overview of water gun device]
FIG. 1 is an explanatory view showing the appearance of the water discharge gun device. As shown in FIG. 1, a water distribution pipe 18 from a pump installed in a pump room is connected to a water discharge gun device 10 installed in a facility such as a ball game field or an exhibition hall, and an air compressor is used. The air pipe 20 is connected. The water discharge gun device 10 is controlled so that the water discharge pressure becomes a target water discharge pressure corresponding to the water discharge distance to the fire source.

The pressurized air from the air pipe 20 is blown around the fire extinguishing water when the fire extinguishing water is discharged from the water discharge gun device 10, and by mixing the air and water, a low water discharge pressure and a small amount of water discharge are sufficient. It is possible to secure a water discharge distance and a wide watering range. Further, the water discharge gun device 10 is mounted on a horizontal swivel table 14 that is horizontally swiveled by driving a horizontal swivel motor 16 with respect to the frame 12, and is fixedly set to a predetermined water discharge angle in the vertical direction.

A nozzle 26 is arranged at the tip of a rising pipe from the apparatus main body mounted on the horizontal swivel base 14 via a flow rate control valve 22. The flow control valve 22 is controlled and driven by the valve body swing mechanism 24, and the flow path area is changed by the periodic swing of the valve body located in the flow path of the fire extinguishing water supplied to the nozzle 26, and the flow rate control valve 22 is discharged from the nozzle 26. The amount of water discharged is changed periodically.

By swinging the valve body of the flow control valve 22 at a frequency cycle of, for example, 0.1 to 2.0 Hz, the amount of water discharged from the nozzle 26 is apparently intermittent (pulse-like or sinusoidal). It fluctuates and reduces the amount of water discharged per unit time, and as a result, the amount of water stored to secure the specified water discharge time is reduced, which makes it possible to reduce the size of the water source tank and reduce the equipment scale and cost. And.

[Flow control valve using butterfly valve body]
FIG. 2 is an explanatory view showing a cross-sectional view of an embodiment of a flow control valve using a butterfly valve body. As shown in FIG. 2, a flow rate control valve 22 is provided following the rising pipe 38 from the gantry 12 side shown in FIG. 1, and a nozzle 26 is mounted on the secondary side of the flow control valve 22.

In the flow control valve 22 of the present embodiment, the butterfly valve body 34, which is rotationally driven by the valve body rotating shaft 36, is arranged in the valve chamber formed by the valve body 32. The butterfly valve body 34 has the maximum flow path area at the neutral position in the direction of the nozzle central axis 35 in the figure, and is not obstructed by the butterfly valve body 34, and the amount of water discharged from the nozzle 26 is the maximum amount of water discharged (water discharge amount). 100%).

On the other hand, when it is rotated to the maximum swing angle θ which is the left and right swing center axes 35a and 35b, for example, the flow path area is halved with respect to the neutral position, and the amount of water discharged from the nozzle 26 is the maximum amount of water discharged. It is reduced to 50% of. Here, in order to secure the amount of water discharged from the nozzle 26 in the unlikely event that the flow control valve 22 does not move due to a failure or the like, it decreases when the butterfly valve body 34 is rotated to the maximum swing angle θ. The value of the maximum swing angle θ is determined so that the amount of water discharged is a predetermined value of 50% or more of the maximum amount of water discharged.

[Valve swing mechanism]
(Leverage link mechanism)
FIG. 3 is an explanatory diagram showing an embodiment of a valve body swing mechanism of a flow control valve using a lever link mechanism.

The lever link mechanism shown in FIG. 3 is provided as a valve body swinging mechanism that periodically swings the butterfly valve body of the flow control valve shown in FIG. 2. As shown in FIG. 3, the lever link mechanism 40 that functions as a valve body swing mechanism is composed of a first link 46, a second link 48, and a third link 50.

One end of the first link 46 is fixed to the output shaft 44 of the motor 42, and one end of the second link 48 is rotatably connected to the other end of the first link 46 as shown by the fulcrum a. Further, the other end of the third link 50 is rotatably connected to the other end of the second link 48 as shown by the fulcrum b, and the other end of the third link 50 is taken out to the outside of the valve body 32. It is fixed to the valve body rotation shaft 36 of the butterfly valve body 34.

The swing drive of the butterfly valve body 34 by the lever link mechanism 40 is as follows. When water discharge is started from the water discharge gun device, the motor 42 is driven. For example, in order to swing the butterfly valve body 34 at a frequency of 1 Hz with a period of 1 second, the motor 42 rotates the output shaft 44 at a rotation speed of 60 rpm.

When the butterfly valve body 34 arranged in the flow path through which the fire extinguishing water flows during the water discharge from the water discharge gun device is swung, a stronger force is applied to the water flow, so that the motor 42 has a high output torque equipped with a reduction mechanism. Use the one.

When the output shaft 44 of the motor 42 is rotated clockwise with the neutral position shown in FIG. 3 as the initial position of the butterfly valve body 34, the first link 46 rotates as a driving link, and the second link The third link 50 connected via the 48 serves as a driven link and swings around the valve body rotating shaft 36, whereby the butterfly valve body 34 swings integrally with the valve body rotating shaft 36.

The position of the fulcrum b of the third link 50 is when the first link 46 is at the position of the fulcrum a, and when the first link 46 rotates to the fulcrum a1, the third link 50 becomes the fulcrum b1 on the right side of the neutral position. When the first link 46 rotates to the fulcrum a2, the third link 50 rotates to the maximum swing angle on the left side of the neutral position which becomes the fulcrum b2.

The left and right maximum swing angles of the butterfly valve body 34 by the third link 50 by the lever link mechanism 40 with respect to the neutral position are not the same because the link lengths of the first link 46 and the third link 50 are different, but there is a problem. It does not become.

That is, if the amount of water discharged when the butterfly valve body 34 is rotated to the larger maximum swing angle is set to be reduced to a predetermined value of 50% or more of the maximum amount of water discharged, that of the opposite side. When it is rotated to a smaller maximum swing angle, the amount of water discharged is reduced to a larger amount, and the reduced amount of water discharged can be a predetermined value of 50% or more of the maximum amount of water discharged.

(Swing slider link mechanism)
FIG. 4 is an explanatory diagram showing an embodiment of a valve body swing mechanism of a flow control valve using a swing slider link mechanism.

As the valve body swing mechanism that periodically swings the butterfly valve body of the flow control valve shown in FIG. 2, the swing slider link mechanism 52 shown in FIG. 4 can be used.

The swing slider link mechanism 52 is composed of a slider 60 slidably provided in a sliding groove 58 formed in the axial direction of the driving link 54, the driven link 56, and the driven link 56.

One end of the driving link 54 is fixed to the output shaft 44 of the motor 42, the other end of the driving link 54 is rotatably connected to the slider 60, and one end of the driven link 56 is taken out of the valve body 32. It is fixed to the valve body rotation shaft 36 of the valve body 34.

The swing drive of the butterfly valve body 34 by the swing slider link mechanism 52 is as follows. When water discharge is started from the water discharge gun device, the output shaft 44 of the motor 42 is rotated at a rotation speed of, for example, 60 rpm.

In the butterfly valve body 34 with the neutral position shown in FIG. 4 as the initial position, when the output shaft 44 of the motor 42 is rotated clockwise, the driving link 54 is rotated and is pivotally supported at the tip of the driving link 54. The slider 60 is rotated so as to draw a circle with the driving link 54 as the radius, and the slider 60 urges the slider groove 58 of the driven link 56. Therefore, the driven link 56 swings left and right about the valve body rotation shaft 36, thereby swinging the butterfly valve body 34 left and right.

The left and right maximum swing angles of the butterfly valve body 34 by the swing slider link mechanism 52 with respect to the neutral position are equal, and the amount of water discharged when swinging to the maximum swing angle is a predetermined value of 50% or more with respect to the maximum amount of water discharged. The lengths of the driving link 54 and the driven link 56 may be determined so as to decrease to.

[Water discharge pressure control of water discharge gun device]
FIG. 5 is an explanatory diagram showing a control system of the water discharge gun device by the water discharge pressure control device. As shown in FIG. 5, a pressure sensor 30 is installed in the water discharge gun device 10 to be controlled by the water discharge pressure control device 62, and detects the water discharge pressure supplied from the water distribution pipe 18 to detect the water discharge pressure control device 62. You are typing in.

The water discharge pressure control device 62 is set with a target water discharge pressure Po according to the distance to the fire source that discharges water by the water discharge gun device 10, and the pressure deviation ΔP between the target water discharge pressure Po and the detection pressure P of the pressure sensor 30. (= Po-P) is calculated, and a control signal is output so that the pressure deviation ΔP becomes zero to control the opening degree of the electric valve 64.

That is, if the pressure deviation ΔP is positive, the electric valve 64 is controlled in the closing direction to reduce the pressure, while if the pressure deviation ΔP is negative, the electric valve 64 is controlled in the opening direction to increase the water discharge pressure. , The pressure P detected by the pressure sensor 30 of the water discharge gun device 10 is directed to the target water discharge pressure Po.

In the case of water discharge accompanied by pressure control of the water discharge gun device 10 by the water discharge pressure control device 62, the flow rate control valve 22 provided in front of the nozzle 26 is driven by the valve body swing mechanism 24, for example, FIG. As shown in 2, the butterfly valve body 34 is swung in a period of a predetermined frequency in the range of 0.1 to 2 Hz, and the amount of water discharged from the nozzle 26 is apparently intermittent (pulse-like or sinusoidal). ), And the amount of water discharged per unit time can be reduced to, for example, about 60% of the conventional continuous water discharge, and the amount of water stored to secure the predetermined water discharge time is reduced, which makes the water source water tank. It can be miniaturized to reduce the equipment scale and cost.

Further, as for the water flow discharged from the nozzle 26, a high-density water flow portion having a maximum water discharge amount and a low-density part having a narrowed water discharge amount are intermittently discharged as the valve body of the flow control valve 22 swings. , The flight of the high-density water flow part maintains the same water discharge trajectory as the continuous water discharge, and further, the high-density water flow part and the low-density water flow part alternately and continuously hit the sprinkling range to improve the striking force by the water discharge. , It is possible to further enhance the protection performance.

[Flow control valve using ball valve body]
6A and 6B are explanatory views showing a cross-sectional view of an embodiment of a flow control valve using a ball valve body, FIG. 6A shows a neutral position of the ball valve body, and FIG. 6B shows a ball valve body. The position where the ball valve body is rotated counterclockwise is shown, and FIG. 6C shows the position where the ball valve body is rotated clockwise.

As the flow rate control valve 22 provided following the rising pipe from the gantry 12 side shown in FIG. 1, the flow rate control valve 22 using the ball valve body 66 shown in FIG. 6 may be provided.

In the flow control valve 22 of the present embodiment, a ball valve body 66 rotationally driven by a valve body rotation shaft 70 is arranged in a spherical valve chamber formed by the valve body 32. The ball valve body 66 has a valve body flow path 68 having the same diameter as the flow path diameter of the inlet / outlet of the valve body 32, and the flow path area is maximized at the neutral position in FIG. The amount of water discharged from the nozzle 26 is set to the maximum amount of water discharged (water discharge amount 100%) without being hindered.

On the other hand, when the ball is swung to the maximum swing angle θ which is the left and right swing center axes in FIGS. 6 (B) and 6 (C), for example, the valve body flow path 68 in the ball valve body 66 with respect to the neutral position. The flow path area is halved, and the amount of water discharged from the nozzle 26 is reduced to 50% of the maximum amount of water discharged.

If it is desired that the amount of water discharged reduced by the swing of the ball valve body 66 be larger than 50% of the maximum amount of water discharged, the maximum swing angle θ in FIGS. 6B and 6C is set to a smaller angle. You can set it to.

As the valve body swing mechanism for swinging the ball valve body 66 provided in the flow control valve 22 of FIG. 6, the lever link mechanism 40 shown in FIG. 3 or the swing slider link mechanism 52 shown in FIG. 4 is used. be able to.

[Valve swing mechanism due to changes in spring force and flowing water force]
FIG. 7 is an explanatory diagram showing another embodiment of the flow control valve that swings due to a change in the spring force of the spring member and the fluid force applied to the valve body.

As shown in FIG. 7, in the flow control valve 22 of the present embodiment, the butterfly valve body 34 is rotatably provided in the valve chamber inside the valve body 32 by the valve body rotating shaft 36, and the outside of the valve body 32. A lever 72 is fixed to the valve body rotating shaft 36 taken out from the above.

A spring member 74 is connected between the tip of the lever 72 and the fixed side, and the lever 72 abuts on the stopper 76 from the right side and is held at the initial position. The butterfly valve body 34 in the valve body 32 at the initial position of the lever 72 has a flow path area with a predetermined maximum swing angle θ with respect to a neutral position where the flow path area is maximized and the amount of water discharged from the nozzle is maximized. The lever 72 is fixed to the valve body rotating shaft 36 so as to be in the initial position that minimizes.

The swing operation of the flow rate control valve 22 according to this embodiment is as follows. When the discharge of fire extinguishing water is started from the water discharge gun device, the flow of fire extinguishing water sent to the flow control valve 22 hits the butterfly valve body 34 at the initial position that minimizes the flow path area, and resists the spring member 74. Then, the butterfly valve body 34 is rotated in the direction of expanding the flow path area, and the amount of water discharged from the nozzle is increased.

When the amount of rotation of the butterfly valve body 34 due to the water flow force increases, the spring member 74 stretches to increase the spring force that tries to return to the initial position, and at a certain stage, the spring force overcomes the water flow force, and the butterfly valve body 34 Returns toward the initial position, and the amount of water discharged from the nozzle decreases.

Since the movement of the butterfly valve body 34 due to the water flow force has inertia, the reversal of the swing direction of the butterfly valve body 34 becomes an instantaneous movement, and the butterfly valve body 34 swings due to the change of the water flow force and the spring force. However, the amount of water discharged from the nozzle can be increased or decreased periodically to reduce the amount of water discharged as compared with continuous water discharge.

Further, the flow control valve 22 of the present embodiment does not require a motor as a drive source unlike the lever link mechanism of FIG. 3 and the swing slider link mechanism of FIG. 4, and has a simple structure and can reduce costs.

Further, the frequency at which the butterfly valve body 34 is swung and the degree of increase / decrease in the amount of water discharged in the present embodiment depend on the area of the butterfly valve body 34, the spring load of the spring member 74, and the like, and cannot be uniquely determined. It is difficult, and the optimum conditions will be determined through trial and error through a water discharge test.

[Modification of the present invention]
In the above embodiment, a water discharge gun device of a large-scale water discharge gun facility having a maximum water discharge distance of about 87 meters is taken as an example, but the water discharge gun device of a medium-scale water discharge gun facility having a maximum water discharge distance of about 68 meters is used. May be applied.

Further, in the above embodiment, the valve body of the flow control valve is transmitted to the valve body by converting the rotation of the motor into a swinging motion by a lever link mechanism or a slider link mechanism, but the present invention is not limited to this. Any mechanism can be used as long as it is a mechanism that converts the motor rotation into a swinging motion.

Further, in addition to the mechanism for converting the rotation of the motor into a swinging motion, the output shaft of the motor may be directly connected to the valve body rotating shaft, and the valve body may be swung by switching the forward and reverse rotation of the motor.

In addition, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not further limited by the numerical values shown in the above embodiments.

10: Water discharge gun device 12: Stand 14: Horizontal swivel 16: Horizontal swivel motor 18: Water distribution pipe 20: Air pipe 22: Flow control valve 24: Valve body swing mechanism 26: Nozzle 30: Pressure sensor 32: Valve body 34 : Butterfly valve body 36: Valve body rotating shaft 38: Rising pipe 40: Lever link mechanism 42: Motor 44: Output shaft 46: First link 48: Second link 50: Third link 52: Swing slider link mechanism 54: Drive link 56: Driven link 58: Slide groove 60: Slider 62: Water discharge pressure control device 64: Electric valve 66: Ball valve body 68: Valve body flow path 70: Valve body rotation shaft 72: Lever 74: Spring member 76: Stopper

Claims (6)

In a water discharge gun device that sprays fire extinguishing water toward the location of the fire source in the caution area
The piping system that supplies fire extinguishing water to the nozzle is provided with a flow control valve that changes the flow path area by periodically swinging the valve body to periodically change the amount of water discharged from the nozzle. A featured water gun device.
In the water discharge gun device according to claim 1, the flow rate control valve maximizes the flow path area at the neutral position of the valve body and maximizes the amount of water discharged from the nozzle, centering on the neutral position. It is characterized in that the flow path area is reduced at a position of a predetermined maximum swing angle of the valve body to reduce the amount of water discharged from the nozzle to a predetermined amount of water discharge of 50% or more of the maximum discharge amount. Water gun device.
In the water discharge gun device according to claim 1, the flow rate control valve is a water discharge gun characterized in that the butterfly valve body or the ball valve body is periodically swung as the valve body to change the flow path area. apparatus.
In the water discharge gun device according to claim 1,
The flow control valve is provided with a lever link mechanism as a valve body swing mechanism for periodically swinging the valve body.
The lever link mechanism includes a first link, a second link, and a third link, one end of the first link is connected to a motor drive shaft, and one end of the second link rotates at the other end of the first link. The other end of the third link is rotatably connected to the other end of the second link, and the other end of the third link is connected to the drive shaft of the valve body by the motor. A water discharge gun device characterized in that the valve body is oscillated by the oscillating rotation of the third link when the first link is rotationally driven at a constant speed.
In the water discharge gun device according to claim 1,
The flow rate control valve is provided with a swing slider link mechanism as a valve body swing mechanism that swings the valve body periodically.
The swing slider link mechanism includes a driving link, a driven link, and a slider slidably provided in a slide groove formed in the axial direction of the driven link, and one end of the driving link is connected to a drive shaft of a motor. When the other end of the driving link is rotatably connected to the slider, one end of the driven link is connected to the drive shaft of the valve body, and the driving link is rotationally driven by the motor at a constant speed. A water discharge gun device characterized in that the valve body is oscillated by the oscillating rotation of the driven link.
In the water discharge gun device according to claim 1, the valve body of the flow control valve swings at a predetermined maximum with respect to a neutral position where the flow rate area is maximized and the amount of water discharged from the nozzle is maximized. The valve body is held at the initial position where the flow path area is minimized by the angle by the urging by the spring member, and the valve body has the swinging force received by the water flow at the initial position and the spring force for returning to the initial position by the spring member. A water discharge gun device characterized by swinging due to changes.

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