JPH0235879Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (a) Industrial application field The present invention relates to a faucet for cold regions that drains water from pipes simply by operating the drain valve.

(b) Conventional technology and problems In cold regions such as Hokkaido, water in water pipes often freezes during the winter. As a countermeasure against this, drain valves have been devised that drain the water from the pipe before going to bed or going out and draining it into the ground below the freezing depth.
Currently, it is used in the majority of residences.

However, with the increase in hot water supply equipment, torii-shaped piping began to be installed indoors. As shown in Fig. 1, torii-type piping is a water pipe 1 located underground below the freezing depth, connected to a drain valve 3 having a drain valve 2, a riser pipe 4 connected to the drain valve 3, It reaches a faucet 7 via a horizontal pipe 5 and a down pipe 6. S is an intake valve. The horizontal pipe 5 is located higher than the riser pipe 4 and the fall pipe 6,
Because it resembles the shape of a torii gate, it is called torii-shaped piping.

When trying to drain water before going to bed or going out, open the faucet 7 and close the handle 8 of the drain valve 3.
When operated, the water in the down pipe 6 is discharged from the faucet 7, the water in the rise pipe 4 is discharged from the drain valve 2 into the ground below the freezing depth, and the water in the horizontal pipe 5 is discharged from either of the above. is discharged.

However, the known faucet had the structure shown in FIG. In the figure, 9 is a faucet main body, 10 is a downpipe connecting portion, and 11 is a valve seat, the surfaces of which are horizontal.

12 is an outlet, and 13 is a rising portion, which is provided vertically. A female thread is carved inside the rising portion, and is screwed into the male thread of the spindle 14. 15 is a handle attached to the spindle 14;
16 is a packing, and 17 is a crown part. 18 is an upper partition, and 19 is a lower partition. Handle 1
When the spindle 14 is turned, the spindle 14 moves up and down, and when the spindle 14 descends and its lower part reaches the valve seat 11, the water supply stops, and when it is opened, the water supply starts.

When flushing while sleeping, going out, etc., negative pressure may be generated within the horizontal pipe 5, and if negative pressure is generated, drainage will be incomplete. To avoid this, the faucet 7 is opened to allow air to flow in. However, when using a known faucet, if the water level reaches the level shown in Figure 2 during drainage, the outflow port 7 It becomes impossible to inhale air from the As a result, a negative pressure is generated in the horizontal pipe 5, which impedes drainage.

In the above-mentioned known product, an upper partition 18 and a lower partition 19 are provided, and a valve seat 11 is provided therein to block the flow from the outlet 12 when the spindle 14 is lowered. In order to solve this problem, it was devised to place the valve seat directly below the spindle (Utility Model Registration Application No. 156174 of 1981), but in order to drain the water, it was necessary to connect the handle of the drain valve and the faucet. It was necessary to operate both handles, and these were often located far apart, so if you operated only one and neglected the other, there was a risk of freezing. The object of the present invention is to provide a faucet that eliminates the above-mentioned drawbacks.

B. Structure of the Invention In order to achieve the above object, the present invention involves a structure of a faucet that can completely drain water only by operating the handle of the drain faucet without operating the handle of the faucet. An embodiment shown in the accompanying drawings will be described in more detail below.

In Figures 3 and 4, 9 is the faucet body, 10
13 is a rising portion, 14 is a spindle, and 15 is a handle. Reference numeral 20 denotes a valve seat, which is provided at the lowest part directly below the spindle 14 and lower than the part of the faucet body through which water passes. As shown in FIG. 5, the lower part 21 of the spindle 14 has a smaller outer diameter than the upper part, and has a vertical hole 22 and a horizontal hole 23 communicating therewith. Reference numeral 24 denotes an intake stop, which is accommodated in the vertical hole 22. Its upper part is made to fit the inner diameter of the vertical hole 22, and the outer diameter of the lower part 25 is made slightly smaller. 26 is an O-ring mounted on the lower part of the spindle 14, 27 is a gasket on the upper part of the intake piece, 28 is a spring mounted on the lower part of the intake piece 24, 29 is a pin, and 30 is the seat surface of the vertical hole 24 of the intake piece 24. , 31 is a water discharge pipe.

C Function Normally, the handle 8 of the water drain valve is in the water supply state, and when the water is in the water supply state, the faucet handle 15 is in the water supply state.
Water is supplied and stopped by opening and closing. At this time, the intake top 24 is in the position shown in FIG. When going to bed or going out, turn the handle on the drain valve to drain the water. At this time, the water in the riser pipe 4 and horizontal pipe 5 is discharged from the drain valve 2 into the ground below the freezing depth, and the water in the fall pipe 6 remains. At this time, when the inside of the horizontal pipe 5 becomes negative pressure, the intake valve S is activated. The intake top 24 was in the position shown in FIG. 3 due to water pressure, but when the water pressure decreased due to drainage, the intake top 24 was pushed upward along the seat surface 30 by the force of the spring 28, and the position shown in FIG. reach the position. As a result, downpipe 6
The water inside reaches the horizontal hole 23, the space between the vertical hole 22 and the lower part 25 of the intake top 24, reaches the horizontal hole 23, and is discharged to the outside of the faucet through the water discharge pipe 31.

D. Effect Since the present invention has the above-mentioned configuration and the above-described effects, the water in the pipe can be completely discharged to the outside simply by operating the handle 8 of the drain valve (without operating the handle 15 of the faucet). Therefore, it has an anti-freezing effect.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing torii-type piping, and FIG. 2 is a front sectional view showing a known faucet. FIG. 3 is a front sectional view of the product of the present invention, showing the state in which water is flowing. Fourth
The figure is a front cross-sectional view of the product of the present invention, and shows the drained state. FIG. 5 is a half-cut perspective view of the spindle.

Claims (1)

[Scope of utility model registration request] The main body has a down pipe connecting part 10 and a rising part 13, and a female thread carved inside the rising part 13 has a
In a valve seat 21 that is screwed onto the male thread of the spindle 14 and provided at the bottom of the main body directly below the spindle 14, a vertical hole 22 and a horizontal hole 23 are bored in the lower part of the spindle 14 to communicate with each other, and the inner diameter of the vertical hole 22 is This faucet for cold regions is constructed by making the lower part of an intake piece 24 having a suitable outer diameter slightly smaller in outer diameter, surrounding this with a spring 28, and providing a pin 29 at the lower part.