JPS639644Y2 - - Google Patents

Description

[Detailed explanation of the invention] In cold regions such as Hokkaido, water in water pipes often freezes during the winter. As a countermeasure to this problem, drain valves have been devised that drain the water in the pipes before going to bed and drain them underground below the freezing depth, and are now used in the majority of households.
As shown in Fig. 1, the plumbing in a general household is such that a water pipe 1 located underground below the freezing depth is connected to a drain valve 3 having a drain valve 2, and a riser pipe 4 and a horizontal pipe 5 are connected to the drain valve 3. and then reaches the faucet 6.

A known faucet has a spindle 7 as shown in FIG.
A screw 8 is cut into the main body 9, and it is screwed into a female thread 10 cut inside the rising part of the main body 9. A packing 11 is housed in the lower end of the spindle, and by turning the handle 12 attached to the spindle 7, the spindle 7 is opened. moves up and down, and when the gasket 11 comes into contact with the valve seat 13, water stops. P is a seal that prevents water from leaking to the top. When trying to drain water while sleeping, operate the handle of the drain valve 3 to drain the water, but at this time, the inside of the horizontal pipe 5 may become negative pressure, so unless you open the faucet 6, the water will not drain completely. is not carried out. However, drain valve 3
Since the handle position and the faucet 6 are usually located far apart, opening the faucet 6 may be a hassle.
Sometimes I forgot things. Also, after draining, tap 6
I had to close it, which was another huge expense. As a result, some work was sometimes omitted, which sometimes led to freezing.

The present invention focuses on the above points and aims to provide a new faucet that does not require opening the faucet 6 even when draining water. The product of this invention has the following configuration to achieve the above purpose. A more detailed explanation will be given below with reference to an embodiment shown in the accompanying drawings.

In Fig. 3, 7 is a spindle, 8 is a screw carved into the spindle, 9 is a faucet body, 10 is a female screw carved inside the rising part of the main body 9, 11 is a gasket, 12 is a handle, and 13 is a valve seat. These are the same as known products.

The novel features of the invented product are as follows. In the known product, the area directly below the valve seats 13, 13 was a lower bulge 14 (see Figure 2), but in the product of the present invention, the left bulge 15 is as known, but a protrusion 16 is provided in the center. , the right side is a horizontal portion 17. The upper partition 18 is similar to a known product, but the lower partition 19 is provided with a circular hole 20. Further, a circular hole 22 is bored in the outlet 21 at the same height as the circular hole 20, and a female thread is carved inside. As shown in FIGS. 4 and 5, the valve stem 23 is connected to a cylinder portion 24 and a rod-shaped portion 2 from the left side in the figure.
5. Consists of a threaded portion 26. The cylinder portion 24 has a tubular shape, and a step 29 is provided between a thin wall portion 27 and a thick wall portion 28 from the left side in the figure. Several small holes 30 are drilled in the thin wall portion 27, and an annular groove 31 is drilled outside the thick wall portion 28 to accommodate an O-ring 32, and a small hole 33 is drilled in the outer side of the thick wall portion 28. There is. The rod-shaped portion 25 is rod-shaped, and the threaded portion 26 has a female thread, and is screwed into the female thread of the circular hole 22 . 34 is a gasket attached to the step 29. 35 is a spring, and 36 is a cylindrical body.

When assembling the product of the present invention, the spring 35 is housed in the cylinder portion 24 of the valve stem 23, and the cylindrical body 36 is inserted between the thin wall portion 27 and the spring 35, inserted into the interior through the circular hole 22, and screwed. The mating portion 26 is screwed into the female thread of the circular hole 22. Assembly ends when the tip of the thin portion 27 comes into contact with the protrusion 16.

The operation of the invented product is as follows. When the drain valve 3 is operated to allow water to flow and the faucet 6 is closed, water pressure is applied to the bottom of the cylindrical body 36, pressing the spring 35, as shown in FIGS. 3 and 6. The tip of the cylindrical body 36 is brought into close contact with the gasket 34. As a result, water will not leak out from the small holes 33.

When water is supplied to the drain valve 3 and the faucet 6 is opened, water is supplied to the outside from the outlet 21, as shown in FIG. 7, although the position of the cylindrical body 36 is the same as described above.

When the drain valve 3 is set to drain, the riser pipe 4,
The water in the horizontal pipe 5 is discharged from the drain valve 2 into the ground below the freezing depth. In this case, when using a known faucet, the faucet 6 was opened. If negative pressure occurs in the horizontal pipe 5, the water in the horizontal pipe 5 may not be completely drained, and in order to eliminate this, the faucet 6 is turned on.
They opened it up and let outside air in. However, in the product of the present invention, water is drained from the faucet even if the faucet 6 remains closed. That is, horizontal pipe 5
When the water inside is gradually discharged from the drain valve 2, the water pressure that had been built up at the bottom of the cylindrical body 35 disappears, and the cylindrical body 36 is pushed to the left in the figure by the force of the spring 34, as shown in FIG. The water in the horizontal pipe 5 flows from the small hole 30 to the thin wall part 27.
, and further passes through the small hole 33 to the outlet 2.
1 and is discharged to the outside.

The product of the present invention has the above-mentioned configuration and operates as described above, so even if you go out for a long time or drain water before going to bed, you do not need to open the faucet 6, and can do so with the faucet closed. There is an effect that sufficient drainage can be achieved simply by operating the water drain valve 3, and there is an effect that the drawbacks of known products are completely eliminated.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing a drain plug, Figure 2 is a front sectional view showing a known product, Figure 3 is a front sectional view of the invented product, Figure 4 is a perspective view of the valve stem, and Figure 5 is a partial view. FIG. 2 is an enlarged front cross-sectional view of the water in a drained state. FIG. 6 is a partially enlarged front sectional view showing a state in which water is flowing and the faucet is closed. Figure 7 shows a state where the faucet is open while water is flowing.

Claims (1)

[Scope of utility model registration request] In the valve seat 13 which is opened and closed by the upper and lower parts of the spindle 7 which is screwed into the rising part of the main body 9,
A protrusion 16 is provided on the lower bulge, which is horizontal up to the outlet 21, a circular hole 20 is bored in the lower partition 19, and a step 29 is provided from the thin wall part 27 to the thick wall part 28, There are several small holes 30 in the part 27.
A valve stem 23 is made up of a cylinder part 24 with several small holes 33 bored in the thick part 28, a rod-shaped part 25, and a threaded part 26, and a cylinder-shaped body 36 and a spring 35 are housed inside the valve stem 23. Yes, a faucet for cold regions inserted into the circular hole 20.