JP2588319B2 - Fire hydrant discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a fire hydrant,
The present invention relates to a fire hydrant discharge device that discharges foreign substances flowing in a pipe outside the pipe.

[0002]

2. Description of the Related Art Conventionally, a standpipe is attached to a fire hydrant to discharge foreign substances flowing in a fire hydrant pipe to the outside of the pipe, and foreign substances are mixed into the drain water at the same time as drainage during a normal pipe washing operation. It was of the degree to discharge.

[0003]

In this configuration, relatively heavy foreign substances flowing down the bottom of the pipe are hardly discharged, requiring a large amount of drainage, and the economic efficiency is extremely poor.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a fire hydrant discharge device capable of efficiently discharging foreign substances flowing in a pipe from a fire hydrant to the outside of the pipe.

[0005]

In order to solve the above-mentioned problems, a fire hydrant discharge device according to the present invention comprises a discharge device comprising a tubular body which can be raised and lowered with respect to a stand pipe detachably attached to a base pipe of the fire hydrant. The tubular body of this ejector is inserted into the base pipe when it descends and reaches the pipe for the fire hydrant, and the length of this tubular body is made longer than the inner diameter of the pipe for the fire hydrant. When the lower end of the pipe reaches the vicinity of the bottom of the fire hydrant pipe, the upper end of the pipe is located outside the fire hydrant pipe, and the water in the pipe flows directly into the base pipe. It is set to a length that can be suppressed by itself.

[0006]

According to the above construction, when the discharger is lowered and the lower end of the cylinder is located near the bottom of the fire hydrant conduit, even if the foreign matter is relatively heavy such as flowing through the bottom of the pipe, the lower end of the cylinder may be removed. The water is sucked up with the drainage from the opening, and is efficiently discharged outside the pipe.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a main part showing an entire structure of a fire hydrant discharge device according to one embodiment of the present invention, and FIGS. 2 (a) to 2 (c) are side views of a discharge device in the fire hydrant discharge device according to one embodiment of the present invention. It is a figure, a top view, and a bottom view.

In FIG. 1, reference numeral 1 denotes a base pipe attached to a fire hydrant conduit 2, which has a built-in sub-valve 3 and is usually provided with a fire hydrant body (not shown) to which a digestion hose can be connected. Thus, a fire hydrant is configured.

The fire hydrant discharge device comprises an L-shaped standpipe 4 and a discharger 5 provided to be able to move up and down with respect to the standpipe 4. Stand pipe 4
Is fixed by being screwed into a threaded joint 7 fixed to a mounting lid 6 which is detachably attached to the base pipe 1 of the fire hydrant, and the discharger 5 is connected to the one side of the stand pipe 4. It is connected via a shaft coupling 9 to the tip of an elevating shaft 8 which is provided inside the straight pipe part so as to be able to move up and down in the pipe axis direction. The other end of the lifting shaft 8 is L
The stand-shaped pipe 4 is supported by a bent portion and protrudes out of the pipe, and an operation handle 10 is provided at an end thereof. Further, a ball valve 11 for stopping water is provided in the other straight pipe of the L-shaped stand pipe 4, and a drain hose 12 is connected to an end of the straight pipe.

[0010] As shown in FIG.
A suspension rod 14 extending upward from the periphery of the upper end opening of the cylindrical body 13, and a cap 16 covering the lower end opening of the cylindrical body 13 and having two axially symmetrical suction ports 15. ,
The hanging rod 14 is connected to the elevating shaft 8 through the shaft coupling 9 as described above, and the vertical movement of the elevating shaft 8 causes the cylindrical body 13 to move up and down in the base pipe 1 of the fire hydrant while almost in contact with the inner surface thereof. It is configured as follows. The length of the cylindrical body 13 is longer than the inner diameter of the fire hydrant pipe line 2.
When the cap 16 at the lower end of the pipe reaches the vicinity of the pipe bottom of the hydrant pipe 2, the upper end of the cylindrical body 13 is located outside the pipe 2 as shown in FIG. It is set such that the flow into the base pipe 1 can be suppressed by the cylindrical body 13 itself.

Next, the operation of the above configuration will be described. First, the ejector 5 connected to the tip by moving the elevating shaft 8 upward is stored in the straight pipe portion of the stand pipe 4. Then, with the sub-valve 3 in the base pipe 1 of the fire hydrant closed, a fire hydrant body (not shown) is removed, and an attachment lid 6 for the stand pipe 4 is connected thereto, and the stand pipe 4 is joined to the base pipe 1. I do. Next, after opening the sub-valve 3, the elevating shaft 8 is lowered and the cylinder
13 is inserted into the base pipe 1 and the cap 16 at the lower end of the cylindrical body 13 is positioned near the bottom of the pipe 2. Thereafter, the ball valve 11 of the stand pipe 4 is opened to drain water. At this time, the water in the pipe line 2 is sucked vigorously from the bottom of the pipe through the suction port 15 and drained out of the pipe from the drain hose 12. It is discharged outside.

[0012]

As described above, according to the present invention, by inserting the cylindrical body of the drainage device into the fire hydrant pipe, the force for sucking up foreign matter from the stand pipe is increased, and the water flows through the bottom of the pipe. Even relatively heavy foreign matter can be easily discharged out of the tube. In addition, when the tubular body of the drainage device is not inserted into the pipe, a normal pipe washing operation can be performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing an entire configuration of a fire hydrant discharge device according to an embodiment of the present invention.

FIG. 2 is a side view, a top view, and a bottom view of a discharger in the fire hydrant discharge device according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base pipe of fire hydrant 2 Pipe for fire hydrant 4 Stand pipe 5 Discharger 8 Elevating shaft 13 Cylindrical body 15 Suction port 16 Cap

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yutaka Isu 2-26-2 Ohama-cho, Amagasaki-shi, Hyogo Pref. Kubota Mukogawa Works Co., Ltd. 62-200760 (JP, U)

Claims (1)

(57) [Claims] 1. A stand pipe detachably attached to a base pipe of a fire hydrant, and provided so as to be able to move up and down with respect to the stand pipe. The stand pipe can be inserted into the base pipe to reach a pipe bottom of a pipe for a fire hydrant. A discharge device for a fire hydrant, comprising: a discharger comprising a cylindrical body, wherein a length of the cylindrical body of the discharger is longer than an inner diameter of the pipe.