JPH0573424B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a ball valve structure for a water intake pipe of a fire engine.

(b) Conventional technology Conventionally, the side of a fire engine is equipped with a water intake pipe for sucking up fire extinguishing water, and the base end of the water intake pipe, that is, the side wall of the fire engine, is equipped with a ball valve for water absorption. It is constructed so that it is possible to switch on and off the flow of fire extinguishing water from the water intake pipe.

Moreover, the base end of the water suction pipe and the ball valve are connected to each other via an elbow pipe, and the water suction pipe is connected to the ball valve in a direction bent at a certain angle.

(c) Problems to be solved by the invention This elbow pipe is fixed in advance to the water intake port of the ball valve, and the fixing method may be one in which the elbow pipe is connected to the ball valve itself or a separate one. There are methods of tightening and fixing body elbow pipes to ball valves, but the former has the disadvantage that if there are many types of elbow pipes, the ball valves themselves must also be manufactured in many different types, and the latter has the disadvantage that water absorption is difficult. When pulling out or storing the pipe, excessive force may be applied to the connecting part of the elbow pipe, which may reduce the sealing effect.
Furthermore, regardless of the type, the direction of the elbow pipe does not necessarily project in the direction in which the water suction pipe is pulled out, and depending on the direction in which the water suction pipe is pulled out, unnecessary force may be applied to the connected portion of the elbow pipe. In the past, there was a risk that the sealing effect would be reduced and the water absorption effect during water absorption would be reduced, and sufficient water absorption required for extinguishing a fire would not be carried out, which could impede fire extinguishing operations.

(d) Means for solving the problem In this invention, a ball valve is arranged on the side of the fire engine, and an elbow pipe at a certain angle is rotatably connected to the water intake port of the valve. It is an object of the present invention to provide a ball valve structure for a water intake pipe of a fire engine, which has a water intake pipe connected to the tip of an elbow pipe.

(e) Effect In this invention, when firefighting is to be carried out, the water suction pipe is pulled out from the fire engine, the tip of the water suction pipe is immersed in prescribed fire extinguishing water, the ball valve is opened, and the water suction work is started, and the water absorbed by such work is The fire is extinguished by spraying water from the water outlet, but since the elbow pipe rotates at the part connected to the ball valve, especially when drawing out or storing the water suction pipe,
Regardless of the direction of the water suction pipe, if you can ensure the sealing performance of the joint part of the elbow pipe and speed up the work of pulling out and storing the water suction pipe, and if you can ensure the sealability only of the rotating part, The manufacturing process can be carried out without considering the load on the elbow pipe due to the drawer and storage operations, and the manufacturing cost is also reduced.

(F) Effects To explain the embodiment of the present invention in detail based on the drawings, A is a fire engine, and a ball valve 1 for water absorption work is provided on the side of the fire engine A. An elbow pipe 2 is rotatably connected, and a water suction pipe 3 is connected to the tip of the elbow pipe 2.

That is, the ball valve 1 has a ball valve 5 housed in a valve case 4, and is configured to open and close by rotating the ball valve 5, and one side opening of the valve case 4 is connected to the discharge port 6. The other side opening of the case 4 is a water intake port 7. Moreover, an elbow pipe flange 9 is integrally connected to the flange 8 of the water intake port 7.

A support tube 10 is protruded from the elbow flange 9, and the support tube 10 is formed in a length that almost covers the straight portion of the elbow tube 2.
The linear base end 11 of the elbow tube 2 is rotatably fitted inside, 12 is a ball, and 13 is a sealing member.In particular, the straight base end 11 of the elbow tube 2 is fitted into the tip portion. It is formed thicker than 14.

In addition, the water suction pipe 3 connected to the tip portion 14 of the elbow pipe 2 is a bellows-shaped water suction pipe, and when stored, it is rolled up in a spiral shape and fixed to the side of the fire engine A, and during water suction work. It is used after being unwound and stretched, and the elbow pipe 2 is configured to be rotatable according to the operation of the water suction pipe 3.

Note that the support tube 1 is rotated to a certain extent so that the rotation of the elbow tube 2 requires a rotation moment exceeding a certain level.
0 and the proximal end 11 of the elbow tube 2 should be tightly and strongly fitted.

In addition to the above-mentioned structure, the base end 11 of the elbow pipe 2 and the ball valve 1 are connected to each other in rotation, as shown in FIG. In some cases, the elbow pipe 2 is rotatably connected.

In this case, the proximal end 11 of the elbow tube 2 and the threaded tube 1
Similar to the previous embodiment, a sealing member ball or the like is interposed between the tip end portion of the tip portion 5 and the tip portion of the tip portion 5.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of the structure of the present invention, FIG. 2 is an explanatory diagram of the same essential parts, FIG. 3 is an explanatory diagram of another embodiment, and FIG. 4 is an explanatory diagram of an example of use of the present invention. 1: Ball valve, 2: Elbow pipe, 3: Water suction pipe, 4: Valve case, 10: Support pipe.

Claims (1)

[Claims] 1 Install a ball valve on the side of the fire engine,
A ball valve structure for a water intake pipe of a fire engine, in which an elbow pipe at a fixed angle is rotatably connected to the water intake port of the valve, and a water intake pipe is connected to the tip of the elbow pipe.