JPS6323484Y2 - - Google Patents

Description

[Detailed description of the invention] In cold regions such as Hokkaido, water in water pipes often freezes. As a countermeasure to this problem, a drain valve was devised that drains the water from the pipe and drains it underground before going to bed, and is now used in the majority of households. However, as the number of hot water supply facilities increased, torii-shaped piping began to be used, and as a result, freezing began to occur. As shown in Figure 1, Torii type piping is a water supply pipe 1 with a drain valve 2 and a drain valve 3.
The water faucet 7 is connected to the water faucet 7 via a rising pipe 4, a horizontal pipe 5, and a falling pipe 6, which are connected to the drain valve 3, and the horizontal pipe 5 is configured to be located at a higher position than the water faucet 7. It is something. If you want to drain the water while sleeping, operate the handle P of the drain valve 3 to open the water faucet 7, and the water in the horizontal pipe 5 and riser pipe 4 will be discharged underground from the drain valve 2, and the water in the horizontal pipe 5 will be drained underground from the drain valve 2. The water in the downpipe 6 is drained from the faucet 7, but if the pressure inside the pipe is lower than atmospheric pressure, the water is not drained sufficiently, which may cause freezing. In order to solve this problem, methods such as installing an intake valve somewhere in the pipe or installing the valve upside down have been used to eliminate the negative pressure inside the pipe. However, intake valves have both advantages and disadvantages, and intake valves that have springs in their structure sometimes malfunction due to abrasion of the springs, which can even lead to freezing. The object of the present invention is to provide an intake valve that solves the above problems.

In order to achieve the above object, the present invention has the following configuration. A more detailed explanation will be given below with reference to an embodiment shown in the accompanying drawings. In the figure, reference numeral 8 denotes a crown part, which has a horizontal hole 9 communicating with the outside and a vertical hole 10 communicating with the horizontal hole 9, and is screwed into the upper part of the main body 11. The main body 11 has a through hole 12 at the top and an air chamber 1 inside.
3, and a lower body 14 at the bottom.
The lower body 14 is provided with a valve seat 15. 16 is a valve, and 17 is a columnar body whose bottom is embedded in the valve 16. 18 and 19 are O-rings. The above is the same as the known product.

The novel features of the invented product are as follows. At the top of the columnar body 17 there is a retaining pin 20 shown in FIG.
20 is attached, and the magnetic body 21 is held between them.
22 is a ring having several small holes 23, and is attached to the middle of the columnar body 17. Reference numeral 24 is a magnetic material, which is provided at the upper part of the lower body 14 along the through hole 25, and is fixed by a C ring 26 (see FIG. 5). The magnetic bodies 21 and 24 are arranged so that the same poles face each other, such as N pole and N pole, S pole and S pole, and the repulsive force thereof is slightly larger than the weight of the valve 16, the columnar body 17, and their accessories. It's being faked.

The product of this invention is installed in the horizontal pipe 5, but when the inside of the pipe is at atmospheric pressure, the magnetic bodies 21 and 24 repel and the valve 16
is in close contact with the valve seat 15 and is in the state shown in FIG. 2, so water inside the pipe does not leak to the outside. When the pressure inside the pipe becomes lower than atmospheric pressure, the weight of the valve 16, columnar body 17, and their accessories overcomes the repulsive force of the magnetic bodies 21 and 24 and falls, resulting in the state shown in FIG. 3. In this case, air flows from the horizontal holes 9 to the vertical holes 10,
It reaches the inside of the pipe through the through hole 12, air chamber 13, small hole 23, and through hole 25. When the pressure inside the pipe recovers to atmospheric pressure, the repulsive force between the magnetic bodies 21 and 24 acts on the valve 1.
6. Overcoming the weight of the columnar body 17, etc., returns to the state shown in FIG.

Since the product of the present invention has the above-mentioned structure and operates in the above-described manner, it not only has a perfect effect as an intake valve, but also has the effect of being free from failure and malfunction.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing torii-type piping. FIG. 2 is a front cross-sectional view of the device of the present invention, showing a state in which no air is being taken in. FIG. 3 is a front sectional view of the product of the present invention, showing the state during intake. FIG. 4 is a plan view showing the retaining pin.
FIG. 5 is a plan view of the C-ring.

Claims (1)

[Scope of utility model registration request] A crown part having a through hole leading to the outside, a main body screwed to the crown part and having a through hole and an air chamber, and a lower main body having a valve seat in the lower part of the main body, and a valve and a columnar body embedded in the crown part are arranged. In this case, the magnetic body 21 is held between the upper part of the columnar body 17 by fixing pins 20, 20, a ring 22 having several small holes 23 is attached to the middle of the columnar body 17, and the through holes of the lower body 14 are attached. 25
A magnetic body 24 is attached to the upper part of the intake valve along the curve, and the magnetic bodies 21 and 24 are arranged so that their poles repel each other.