JPH0410853Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial field of application] This invention relates to a fire hydrant valve opening device, and is used when a storage box for a fire hydrant unit is embedded and installed in the passageway wall of a building or other structure. be done.

[Conventional technology]

Among these types of fire hydrants, when in use, the take-up reel is pivoted on the inner surface of the door, a shape-retaining hose for fire extinguishing is wound around this, and the lower end of the door is pivoted to the bottom of the unit storage box. Conventionally, in order to open a fire hydrant of the type that opens upward, a switch for starting an electric valve is provided in the unit, and the valve is opened by pushing the switch.

[Problems that this invention attempts to solve]

However, if an electric valve is used to open the valve, it will not operate at all if a fire occurs and the power goes out, so fire hydrants cannot be used and water cannot be sprayed, which is a major problem.In addition, the cost of installing fire hydrants is high. However, there was a problem in that it could not be installed inexpensively.

[Means for solving problems]

This proposal attempts to solve the above problems.
A top-opening fire hydrant in which a take-up reel of a shape-retaining hose is pivotally mounted on the inner surface of the door and water is sent to the hose through the rotating shaft, and a ball valve is fixed to the frame of the reel, and its operating lever is connected to the reel. A guide is provided on a side surface of the reel and has a starting end closest to the reel and a terminal end farthest from the reel with a rotation radius of 90°, and the engaging shaft of the lever is movably engaged with the guide. Due to the rotation of the protrusion provided near the outer peripheral edge of the reel, the lever that closes the valve when located at the starting end of the guide is pressed and moved to the terminal end, opening the valve. The gist is a configuration that rotates without coming into contact with.

[Function] In the device of this invention, when the door is open, the engagement shaft of the lever is located at the starting end of the guide groove and the ball valve is closed, and since the lever is made of Linsen copper plate and can be bent, the engagement The lever ahead of the shaft is pulled toward the starting end and is close to the take-up reel.

In this state, when you hold the water nozzle and pull out the shape-retaining hose, the take-up reel rotates, the protrusion contacts the lever and rotates while pressing it, and also contacts the limit switch to start the water pump. Therefore, the lever rotates around the rotation axis of the ball valve body, and the ball valve body is gradually opened. During this rotation,
The lever is guided by the guide groove and moves away from the side of the take-up reel, and when the engagement shaft moves to the end of the guide groove, the ball valve body is fully opened and the lever is furthest away from the take-up reel. The protrusion rotates without coming into contact with the lever, allowing the shape-retaining hose to be pulled out continuously.

When this ball valve opens, water in the water pipe flows from the rotating elbow through the communication hole in the rotating shaft to the hose connection tube and the shape-retaining hose, and is discharged from the water discharge nozzle at the tip. After the fire has been extinguished, turning the lever or the manual lever in the opposite direction will close the ball valve and stop water discharge.

〔Example〕

The drawings show one embodiment of the present invention, which will be specifically described below.

Figure 1 shows the open state of the box housing the fire hydrant unit. 1 is the box body, 2 is the door, and both lower ends of the box are pivoted to the lower part of the box body 1 with shafts 3. It's the type that opens.

A frame 5 is fixedly attached to the inner surface of the door 2, on which a take-up reel 4 of a shape-retaining fire extinguishing hose (dotted chain line in the figure) is rotatably pivoted.
The rotating shaft 4a is provided with a hose connecting tube 6 and a rotating elbow 7, which communicate with each other inside the rotating shaft. Nozzle 8 is door 2
It is removably hung at an appropriate position on the inner surface of the holder. Further, as shown in FIG. 2, the rotary elbow 7 is connected to a discharge port of a ball valve 9, which will be described later, with a hose.

Since the door 2 is supported by a wire 11 extending from a wire storage tube 10 fixed to the box body 1 with a return spring inside, the door 2 is almost stopped in the open state shown in FIG. , it won't open any more.

A ball valve 9 is attached to the inner frame 5 fixed to the door 2, as shown in FIG. When the ball valve 9 is connected and the ball valve 9 is opened, water in the water pipe 12 flows from the rotating elbow 7 through the communication hole in the rotating shaft 4a to the hose connecting tube 6 and the shape-retaining hose, and from the water discharge nozzle 8 at the tip. It is starting to be discharged.

A bendable lever 13 made of a Linsen copper plate is fixed to the ball valve body 9c of the ball valve 9, and its tip extends to the side surface of the take-up reel 4. Further, a guide plate 14 is fixed to the upper end of the frame 5, the starting end of which is close to the side surface of the take-up reel 4, and the guide plate 14 is separated from the end of the reel 4 in the direction of rotation. It was
A guide groove 15 with a rotation radius of 90° is provided. As shown in FIG. 4, a trochanter 17 is mounted on the engagement shaft 16 projected from the lever 13 and movably engaged in the guide groove 15. A protrusion 18 is provided that comes into contact with the lever 13 and presses it.

In the above, the relationship between the position of the lever 13 and the opening/closing of the ball valve 9 is such that when the engagement shaft 16 of the lever 13 is located at the starting end m of the guide groove 15 closest to the take-up reel 4, the ball valve 9 is closed. ,
When the engagement shaft 16 rotates to the terminal end n of the guide groove 15 farthest from the take-up reel 4, the ball valve 9 is set to be fully opened.

A limit switch 20 is attached to an arm 19 extending from the guide plate 14, and when the protrusion 18 rotates a little and comes into contact with it,
The signal causes a water pump (shown in the figure) to start.

In the device of the present invention, in the state shown in the first figure with the door 2 open, the engagement shaft 16 of the lever 13 is located at the starting end m of the guide groove, and the ball valve 9 is closed.
Since the lever 13 is made of a Linsen copper plate and is bendable, the lever 13 beyond the engagement shaft 16 is pulled toward the starting end m and is close to the take-up reel 4.

In this state, when holding the water nozzle 8 and pulling out the shape-retaining hose as shown by arrow A in Figure 3, the take-up reel 4
rotates in the direction of arrow a in FIG. 5, and the protrusion 18 contacts the lever 13 and rotates while pressing it, and also contacts the limit switch 20 to start the water pump (shown). Therefore, the lever 13 rotates around the rotation axis of the ball valve body 9c, and the ball valve body 9c is gradually opened. During this rotation, the lever 13 is guided by the guide groove 15 and the take-up reel 4
, and the terminal end n of the guide groove 15
When the engagement shaft 16 moves, the ball valve body 9c is fully opened and the lever 13 is furthest away from the take-up reel 4, so the protrusion 18 rotates without coming into contact with the lever 13.

When this ball valve 9 opens, water in the water pipe 12 flows from the rotating elbow 7 to the rotating shaft 4a, as described above.
The water flows through the communication hole inside to the hose connection tube 6 and the shape-retaining hose, and is discharged from the water discharge nozzle 8 at the tip. After extinguishing the fire, press the lever 13 or the manual lever 21.
If you turn it in the opposite direction, the ball valve 9 will close.
Water spraying will stop.

Note that in this embodiment, the engagement shaft 16 of the lever 13
Although the case has been described in which the guide groove 15 is engaged with the guide groove 15, this is not limited to the guide groove, and the same applies to other structures such as a guide rail.

Further, as an embodiment of the present invention, the guide groove 15 is provided parallel to the side surface of the reel, and the ball valve 9
The reel may be installed at a predetermined angle with respect to the side surface of the reel, and similar effects can be obtained in this case as well.

〔effect〕

As described above, according to the present invention, the lever of the ball valve is guided by a guide in which the valve closing position is close to the side of the take-up reel and the valve opening position is remote from the guide, and the protrusion on the side of the reel guides the lever of the ball valve. Press and move the lever to open the valve,
After the valve is opened, the protrusion rotates without contacting the lever, so even if a fire occurs and a power outage occurs, the drawing of the shape-retaining hose and the opening of the valve are automatically linked to immediately discharge water. It has the effect of extinguishing fire. In addition, the protrusion is provided near the outer periphery of the take-up reel, and the lever is set long so that it presses near its end, so the ball valve can be reliably opened by the rotational torque when pulling out the shape-retaining hose. It has the advantage of being a valve.

[Brief explanation of the drawing]

Figure 1 is a partially sectional side view of a top-opening type fire hydrant box with the proposed device in the open state, Figure 2 is a partially sectional side view of the main parts when the valve is open, and Figure 3 is a plan view of the main parts. , Figure 4 is a cross-sectional view of the engaging part between the lever and the guide groove, Figure 5 is
The figure is an explanatory diagram of the operating state. 2... Door, 4... Winding reel, 4a... Rotating shaft, 5... Frame, 9... Ball valve, 13
... lever, 15 ... guide, 16 ... engagement shaft,
18... protrusion, m... starting end, n... terminal end.

Claims (1)

[Claims for Utility Model Registration] (1) A top-opening fire hydrant in which a take-up reel of a shape-retaining hose is pivotally mounted on the inner surface of the door, and water is supplied to the hose through the rotating shaft, the reel having a ball attached to the frame of the reel. A valve is fixed and its actuating lever is disposed on the side of the reel, and a guide is provided with a starting end closest to the reel and a terminal end farthest from the reel with a turning radius of 90°, and the guide is provided with a guide that has a turning radius of 90°, and the lever is moved around the guide. By movably engaging the engagement shaft, and rotating a protrusion provided near the outer periphery of the reel, a lever that closes the valve when located at the starting end of the guide is pressed and moved to the terminal end, thereby closing the valve. A valve opening device for a fire hydrant, characterized in that the protrusion rotates without contacting the lever after the valve is opened. (2) The fire hydrant valve opening device according to claim 1, wherein the guide is parallel to the side surface of the reel, and the ball valve is inclined at a required angle with respect to the side surface of the reel.