JPH0748278Y2 - Water discharge device with suction cup equipped with suction device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water discharge device used in fire fighting activities.

[0002]

2. Description of the Related Art Conventionally, water discharge work at a fire site has been
It is a heavy work to counter the reaction force caused by water discharge, and it causes a building fire,
In an underground mall fire, firefighters hold a water discharger in the heavy smoke and hot air, and when discharging a large amount of water, carry a heavy and bulky water spray gun or a device called a water discharge pedestal for a long time. Continuing water discharge over time was associated with excessive fatigue and danger.

Buildings in big cities are becoming higher and higher, and ladder cars cannot reach or water can not be delivered from high-altitude towers. In addition, heavy smoke and hot air make it impossible for firefighters to enter indoors. The number of fires is increasing, and it is extremely difficult to properly discharge water to high places with the conventional technology, and countermeasures against it are becoming a big problem.

[0004]

The present invention It is an object of the present invention is, aims to labor reduction and safety of in firefighters to drainage work, generating a vacuum in the running water at the time of water discharge that allows also effective drainage of the building heights
The water discharge device is small and light in weight to be adsorbed by the vacuum, can be easily transported, and can be easily fixed regardless of the state of the ground contact surface.

[0005]

A suction device (4) having a nozzle (1) and a curved pipe (2) at one end and a fire hose connector (3) at the other end. And the suction plate (5) fixed to the body of the suction unit (4), the orifice (6) acting as a jet pump and the diffuser (7) are fixed in the body of the suction unit (4) with a slight gap, and the gap is Vacuum chamber (8) provided around the diffuser (7)
The vacuum chamber (8) is fixed by penetrating the suction plate (5) with a hollow coupling pipe (9), and the suction plate (5) has an air-impermeable surface treatment around the elastic bowl-shaped edge. A disc with a rim (12) sandwiching a suction cup (11) with a sponge band (10) attached thereto and a restraining disc (13).
At the edge of 2), several holes (14) are opened at equal intervals.
The above structure is shown in FIGS.

According to the second aspect, the suction device (4) is provided with
FIG. 3 shows a structure in which a water supply pipe (15) having hose coupling portions (3) attached to both ends is coupled.

According to a third aspect of the present invention, the suction device (4) and the suction plate (5) are fixed to each other by a T-shaped connecting pipe (16), and the branching tip has an opening / closing valve (17) and a suction device (4). 4) is provided with a check valve (18) on the () side and is shown in FIG. Alternatively, the suction cup (10) of the suction disc (5), the rimmed disc (11),
An on-off valve (17) penetrating the restraining disc (12) and a check valve (18) provided on the suction pipe (4) side of the hollow pipe (9).

[0008]

With respect to claim 1, when the device is placed on the grounding surface and water is passed from the hose connected to the fire hose connector (3) to the suction device (4), the orifice (6) in the suction device (4). The passage is narrowed by and the flow velocity of the flowing water becomes faster, so that air is sucked from the gap with the diffuser (7). The vacuum chamber (8) is brought into a vacuum state, the air in the suction plate (5) is sucked, and the suction plate (11) is flattened and sucked onto the ground surface. The flowing water containing the sucked air is discharged from the nozzle (1) through the diffuser (7) and the curved pipe (2). As long as the water discharge continues, the adsorption is maintained, and this device is fixed, enabling stable water discharge.

According to the second aspect of the present invention, in the device, a water pipe (15) having a hose coupling (3) at both ends is provided with a suction device (4).
By connecting to, it is possible for water to be adsorbed on a wall in a high place that is out of reach of fire fighters and then discharged.

According to the present invention, the device is provided with an opening / closing valve (1
When 7) is closed, the check valve (1
By the operation of 8), the vacuum in the suction plate (5) does not leak and the suction is maintained, so that it can be prevented from falling when used in high places. If necessary, the opening / closing valve (17) is opened to open the inside of the suction plate (5), so that it can be easily removed.

[0011]

[Embodiment] According to claim 1, the fire brigade is most commonly used in this device, which was prototyped with a suction cup (11) having a diameter of about 15 cm, an orifice (6) having a diameter of 12 mm, and a diffuser (7) having a diameter of 14 mm. If a direct spray switching type nozzle is attached, it is grounded on a mortar wall of a general building and water is discharged at an inlet pressure of this device of about 10 kgf / cm ² ,
This device has enough suction power to prevent it from coming off even if a firefighter hangs.

The relationship between the vacuum pressure and the inlet pressure of the vacuum chamber (8) of the present apparatus is as shown in FIG.
It shows a maximum of about 750 mmHg at f / cm ² and is in equilibrium at higher pressures. This means that the suction force of the suction plate (5) immediately reaches the maximum with a slight water discharge pressure at the start of water discharge of this device.

The suction force of the suction cup (5) is almost the same as the suction cup (11).
It can be said that a value obtained by multiplying the area [cm ² ] of the suction disc (5) by the numerical value obtained by dividing the vacuum index in the suction disk (5) by the maximum vacuum index under atmospheric pressure of about 760 mmHg as 1 atm of about 1 kgf / cm ² . In the above case, it was estimated to be about 170 kgf / cm ² .

The diameter of the prototype diffuser (7) was set to 20.
As shown in FIG. 5B, the relationship between the vacuum index and the inlet pressure is mm, the inlet pressure until reaching the maximum vacuum index is higher than that of A, and the maximum is about 680 mm at about 5 kgf / cm ^2.
It shows Hg and is in equilibrium at higher pressures. This means that when the inlet pressure is low and the flow velocity at the orifice (6) is slow, if the diameter of the diffuser (7) is larger than the inlet (6) to an appropriate degree, it will flow from the gap around the water flux to the outlet side. It is speculated that the released water is vacuum-sucked and flows backward, lowering the vacuum index.

In the suction cup (5), the non-breathable sponge band (10) attached around the edge of the bowl-shaped suction cup (11) adheres to the ground surface even if there is some unevenness, and almost no air leak occurs. Without
Also, some air leakage is continuously vacuum sucked from the hole (14) opened in the edge of the rimmed disc (11) to retain the suction force. The same effect can be obtained by providing a serrated cutout on the edge of the rimmed disc.

The bending pipe (2) and the suction device (4) of the present apparatus are connected to each other by changing the direction of the bending pipe (2) and easily tightened by hand, and a watertight retaining ring is attached for fire fighting. The screw-type connection method is good, and the direction of water discharge can be easily changed when it is adsorbed on a building wall or the like.

The nozzle attached to this apparatus is preferably a nozzle without a water discharge opening / closing mechanism. When a nozzle with an opening / closing mechanism is attached and water is discharged without noticing the closed state, the suction device (4) and suction plate (5) are fixed. A fountain spouts from the hollow connecting pipe (9), which leads to an unexpected accident due to reaction force.

It is also possible to remove the curved pipe (2), attach a nozzle directly to it, and adsorb it to any object to use it as a water discharge stand for discharging water in a direction parallel to the grounding surface of the suction plate (5), but this is a trial. As a result, if the bent pipe (2) having a bending angle of 40 ° to 50 ° is faced upward with respect to the ground contact surface and is always attached, it is most easy to use in general fire fighting activities.

According to the present invention, a lightweight aluminum water pipe (15) having a length of about 2 m is connected to the present apparatus, and the curved pipe (2) is attached to the suction plate (5) side. Immediately after contacting the outer wall with water and adsorbing water, the suction board (5) immediately adsorbed on the outer wall, and even if water was released at an inlet pressure of 10 kgf / cm ² or more, approximately 20 m of hose with a reaction force and a nominal diameter of 40 mm was suspended inside. Stable water discharge can be continued without peeling off against external force such as weight including water.

In this case, the length of the water pipe (15) is about 2 m.
Is long enough to reach the outer wall of the floor directly above it from the window or veranda of a typical high-rise building by the firefighters' hands, making it easy to handle.

This device is adsorbed on the outer wall of a building and discharged,
When the water discharge stops for some reason, the vacuum generation in the suction device (4) also stops, and the restoring force of the bowl-shaped elastic suction cup (11) sucks water or air from the suction device (4). The suction force of the suction plate (5) decreases, and the weight of the device and the hose including water cannot be resisted, and the device peels off and falls.

In order to make up the above-mentioned drawback of the third aspect,
Aspirator (4) of the coupling pipe (9) or the T-shaped coupling pipe (16)
The check valve (18) attached to the side holds the adsorption force sufficiently by the instant when the water discharge is stopped, and in the water discharge stopped state, the opening and closing attached to the suction plate (5) or the T-shaped connecting pipe (16) Valve (1
It can be removed immediately by the opening operation of 7). In addition,
A rope may be attached to the open / close valve (17).

As an effective embodiment in addition to the present invention, a reflecting mirror is attached to the body of the curved pipe (2) or the suction device (4) to which the water pipe (15) is connected, and the reflection angle is adjusted and the vertical and horizontal directions are set. By attaching to a freely rotatable type,
Support metal fittings are rectangular reflectors with rotatable spherical bearings, such as the large reflectors attached to large trucks, which can be adjusted to an easy-to-see reflection angle depending on the position where they are attached to the outer wall and where the firefighters are. It can be easily changed to a horizontal shape that looks wide horizontally when checking a room on a veranda such as a high-rise house, or a vertical shape that looks wide vertically when checking a room without a distance near a window such as an office building. , The angle of reflection can be adjusted freely to observe the situation, and effective water can be discharged.

Further, a foaming nozzle is attached to the curved pipe (2) to receive water supply of a mixture of extinguishing agents from a chemical fire engine, etc., and foaming radiation can be emitted from the foaming nozzle via the curved pipe (2). Firefighters have this device in place of the heavy and bulky foam radiant gun,
When approaching the effective range for extinguishing the burning oil surface, this device can be easily attached to the ground surface and installed, and temporarily retracted to a safe place.

Furthermore, a foaming nozzle is attached to the curved pipe (2), and an on-off valve (17) attached to the T-shaped connecting pipe (16) for fixing the suction device (4) and the suction plate (5) is provided with a fire extinguishing agent. By attaching the suction pipe, the suction pipe is inserted into the container containing the extinguishing agent, the extinguishing agent is sucked by the vacuum of the aspirator (4), mixed with water in the aspirator (4), and the bent tube (2) is closed. Foaming can be emitted from the foaming nozzle. There is an effect that foam fire can be emitted by a fire pump car without the need for a costly chemical fire engine dedicated to this type of fire.

[0026]

According to the first aspect of the present invention, since it is small and lightweight, it can be always combined with a hose and folded to be stored, and can be carried as it is when used.

When discharging water, it can be easily installed at a place where the fire extinguishing effect can be most expected regardless of the ground contact surface.

In the thick smoke and hot air, firefighters can temporarily evacuate with the equipment installed, and can perform fire extinguishing work safely and with less labor.

With respect to claim 2, by connecting the water pipe (15) to this device, water is adsorbed to the outer wall from the floor directly below the safe floor to the fire floor opening of a high-rise building that could not be reached even by a dedicated fire engine, and water is discharged. It became possible to extinguish the fire.

According to the third aspect, by providing the opening / closing valve (17) and the check valve (18), safety and operability of preventing fall when adsorbed on a wall or the like are improved.

By attaching a reflecting mirror to the curved pipe (2) or the suction device (4) to which the water pipe (15) is connected, the indoor situation on the fire floor, which cannot be seen directly, can be observed from the floor directly below it, which is effective. It became possible to discharge water.

By attaching a foaming nozzle to receive the water mixture of the extinguishing agent mixture from the chemical fire engine, and by attaching an intake pipe for the extinguishing agent, a chemical fire engine is not required.
The most popular fire-fighting pump cars have become capable of foaming radiation.

With the present invention, the risk of fire fighting activities by fire fighters in the field including high-rise building fires and oil fires is greatly reduced, and long-time fire fighting activities are not troublesome.

The present invention enables efficient fire fighting activities of the fire brigade, reduces damage caused by the fire, and benefits the public.

[Brief description of drawings]

FIG. 1 is an external view (or side view) of a water discharge device with a suction disk equipped with a suction device .

FIG. 2 is an internal structure diagram (or sectional view) of the suction device and the suction plate.

[Fig. 3] External view of water pipe connection

[Fig. 4] Attachment of on-off valve and check valve of suction device

[Fig. 5] Relationship between inlet pressure and vacuum index

Claims (3)

[Scope of utility model registration request] 1. A vacuum chamber is provided with an orifice (6), a diffuser (7) and a vacuum chamber (8) in the body of an aspirator mark (4) having a curved pipe (2) with a nozzle (1) at one end. A water discharge device with an adsorption disk equipped with an aspirator that penetrates and is fixed by a hollow coupling pipe (9) leading from the chamber (8) to the adsorption disk (5). 2. A water discharge device with a suction disk equipped with the suction device according to claim 1, wherein a water supply pipe (15) is connected to the suction device (4). 3. A check valve (18) is attached to the suction device (4) side of the coupling pipe (9), and an opening / closing valve (17) is attached to the adsorption plate (5). Water discharge with suction board equipped with suction device
apparatus