JPH04127Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a drainage confirmation device for an antifreeze valve that detects the presence or absence of water in a water pipe on the faucet side to prevent damage to the water pipe due to freezing. Regarding.

Prior Art In general, during cold seasons such as winter, water in water supply pipes exposed above the ground may freeze, or during cold periods such as late at night, the water in the water supply pipes may freeze after use. It is necessary to drain the water. For this reason, a so-called anti-freeze valve is installed in the underground water supply pipe before it is connected to the ground, and when there is a risk of freezing, the anti-freeze valve is operated to expose the water above ground. The water in the water supply pipe on the outflow side is drained.

Problems to be Solved by the Invention Since the above-mentioned antifreeze valve is used for a long period of time during the cold season, it may malfunction, such as not being able to discharge the antifreeze valve even if the handle can be operated. In addition, the anti-freeze valve mentioned above is not used for a long period of time during the summer, so if the anti-freeze valve is used while the drain pipe is clogged with sand, etc., the water in the water pipe on the faucet side may may not be able to be discharged. Further, when the antifreeze valve is operated, for example, the handle may not be rotated sufficiently and water may not be drained even if the water supply can be stopped.

In the case described above, if it is mistakenly assumed that water is being drained by operating the handle of the antifreeze valve, the water pipes may be damaged due to freezing. In addition, even if it is not damaged, the water in the water pipe on the faucet side may freeze.
There is an inconvenience that the water cannot be used until it is thawed.

Furthermore, since the water pipes mentioned above are generally opaque,
There is an inconvenience in that it is difficult to know whether or not the water in the water pipe on the faucet side is being discharged just by looking from the outside. In this case, in many cases it can be confirmed by checking whether or not water is being drained from the drain pipe outlet by operating the handle, but it is inconvenient that no one other than the person who performed the operation can know this. There is. In addition, to confirm the above drainage,
Drainage pipes are generally installed in locations that are difficult to see;
The drawback was that it was a cumbersome task.

The present invention eliminates the above-mentioned drawbacks of the conventional example.
By making it possible to easily check whether there is water in the faucet-side water pipes that are at risk of freezing, without having to check the drainage every time the anti-freeze valve is operated, damage to the water pipes due to freezing can be prevented. It is an object of the present invention to provide a drainage confirmation device for an antifreeze valve that prevents such problems.

Means for solving the problem The present invention provides a cylindrical body that conducts water in the pipe at an appropriate position of the water pipe on the faucet side where the antifreeze valve is installed, and houses a float in the cylindrical body. A valve seat is formed in the upper part of the cylindrical body, a shaft attached to the float is made to protrude from the valve seat to the outside of the cylindrical body, and a light emitting part is formed at the tip thereof,
A vent hole is provided that reaches from the light emitting part to the float side surface of the valve seat. Therefore, the drainage of the antifreeze valve can be confirmed at the position of this light emitting part.

Function: The drainage confirmation device for the antifreeze valve of this invention is constructed as described above, so the float quickly responds to the presence or absence of water in the water supply pipe, and checks the drainage of the antifreeze valve at the high and low positions of the light emitting part. can be easily checked. Furthermore, since the light emitting part is provided with a vent that reaches the float side surface of the valve seat, the water in the drain pipe is quickly drained even when the antifreeze valve is in the drain state.

Embodiments Hereinafter, a drainage confirmation device for an antifreeze valve according to the present invention will be explained in detail based on the drawings.

In Figures 1 and 2, water pipes 2, such as water supply pipes, which are piped into the interior of the ground surface 1 are curved vertically upward at appropriate positions to protrude above the ground surface 1, and are placed at appropriate height positions. Water faucet 3 curved horizontally
A faucet 4 is installed.

In the water supply pipe 2, an antifreeze valve 5 is interposed in the ground surface 1 in front of the ground surface 1 exposed above the ground surface 1. This antifreeze valve 5 includes, for example, a cylindrical cover 6
By opening the top lid 7 of this cylindrical cover 6, a handle 8 at the top end of the cylindrical cover 6 can be manually operated.By rotating this handle 8, the water supply side can be opened. The water pipe 2 and the water pipe on the faucet side (regarding the antifreeze valve 5) (code 2a)
By setting the water supply pipe 2a in a communicating state (indicated by ) or reversing the direction of rotation, the water supply side can be shut off and the water pipe 2a on the faucet side can be communicated with the drain pipe. The handle 8 may be moved in the vertical direction instead of being rotated, and the antifreeze valve 5 may be of a known structure or may not be of a known structure.

By the way, as shown in FIG. 2, water in the pipe is located at a suitable position in the water pipe 2a on the faucet side with respect to the antifreeze valve 5, for example, at a horizontally curved part at a position at a suitable height above the ground surface 1. A cylindrical body 11 is provided which conducts electricity. A float 12 is housed in this cylindrical body 11, and when water is being supplied to the water pipe 2a, that is, when the water pressure is high, the float 12 rises, and conversely when the water pressure is low, it falls. Reference numeral 13 denotes a valve seat formed on the upper part of the cylindrical main body 11, which can come into contact with the float 12 via the packing 14 on the lower surface.

A shaft 15 is provided on the upper surface of the float 12, and its tip protrudes to the outside of the cylindrical body 11 through the central opening of the valve seat 13. A light emitting section 16 is formed at the tip of the shaft 15. The light emitting part 16 has fluorescent paint 17 on its outer periphery.
is coated and can be clearly seen from the outside. Of course, the light emitting part 16 is not limited to the fluorescent paint 17.
Retroreflective surface treatments and other light sources can be used.

The valve seat 13 can come into contact with the light emitting section 16 via the packing 18 on its upper surface. Note that the packings 14 and 18 are not limited to O-rings as shown in the drawings, but may have an appropriate shape.

The light emitting section 16 is provided with a vent hole 19 that reaches the float side surface of the valve seat 13. The ventilation hole 19 may be not only a hole drilled in the shaft 15 but also a groove formed on the outer periphery thereof. The space inside the transparent lid 20 that houses the light emitting section 16 is
For example, a ventilation hole 21 formed on the top surface of the cylindrical body 11
It communicates with the outside world.

The operation of the above-described embodiment configured in this manner will be described below.

It is assumed that a cold season such as winter has arrived and there is a risk of freezing.

If there is water in the faucet-side water pipe 2a with the faucet 3 closed, water pressure is applied to the float 12, causing the float 12 to rise, come into contact with the valve seat 13, and stop. At this time, the light emitting part 16 is at the highest position, and it is easily found that the water pipe 2a is filled with water. Therefore, after using the water supply, keep the water tap 3 open, operate the handle 8 of the antifreeze valve 5 to stop the water supply, and connect the water pipe 2a on the faucet 4 side to the antifreeze water drain pipe. The water pipes 2a are communicated with each other, and the water in the water pipe 2a is discharged. At the same time, the float 12 descends, the light emitting part 16 comes into contact with the valve seat 13 and stops, and it is displayed that the water has been drained. At this time, since air is supplied through the vent hole 19, the water in the water pipe 2a is quickly discharged.

Effects of the invention As described above, the drainage confirmation device for antifreeze valves according to this invention can reliably detect the presence of water with a simple structure, and provides an effective means for preventing freezing. can.

[Brief explanation of the drawing]

FIG. 1 is a schematic view showing the vicinity of a water supply pipe using an embodiment of the drainage confirmation device for an antifreeze valve of this invention, and FIG. 2 is an enlarged sectional view of the main part thereof. 2, 2a... Water pipe, 3... Water tap, 4... Faucet, 5... Antifreeze valve, 11... Cylindrical body, 1
2...Float, 13...Valve seat, 15...Shaft, 16...Light emitting part, 19...Vent hole.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A cylindrical body that conducts water in the pipe is provided at an appropriate position of a water pipe on the faucet side where an antifreeze valve is installed, a float is housed in this cylindrical body, A valve seat is formed on the upper part of the cylindrical body, and a shaft attached to a float is made to protrude from the valve seat to the outside of the cylindrical body.A light emitting part is formed at the tip of the shaft, and a light emitting part is formed on the float side of the valve seat. A drainage confirmation device for an antifreeze valve, characterized by having a vent hole that reaches the surface. 2. The drainage confirmation device for an antifreeze valve according to claim 1, wherein the light emitting part is coated with fluorescent paint on its surface.