JPS5810791Y2 - Vacuum removal device for water supply - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vacuum removal device for water supply that maintains equal pressure by destroying the vacuum state inside the pipes that occurs when water is cut off or drained, for example. .

Next, the present invention will be explained in detail with reference to the drawings.

In the present invention, a water supply valve 2 is provided in the middle of a supply pipe 1 for water supply or water supply, for example, and a support cylinder 4 having a suction hole 3 is freely communicated with the supply pipe 1 at a position near the inflow side of the water supply valve 2. A valve body 6 such as a ball valve is installed inside the support tube 4 via a backing 5 formed of rubber, synthetic resin, metal, or other materials, and the valve body 6 is used to open and close the support tube 4. A hole 7 is provided to be openable and closable, and a dropper-shaped air pump 9 is attached to the opening/closing hole 7 to forcibly supply air to promote removal of waste water in the pipe 18. , a suction valve 1 that sucks air by pressing a pump 9;
0 is set.

In addition, in the figure, 8 is a mounting part for attaching the support tube 4 to the supply pipe 1 by means such as welding or screwing (the support tube 4 may be formed integrally with the supply tube 1), 11 is a drain valve, 19 is a container such as a bathtub containing sewage, and 20 is a hose attached to the tip of the supply pipe 1.

Furthermore, 12 is a spring with a plate-shaped valve body 13 attached to the lower end and provided in the support cylinder 4, 14 is a valve body for closing the valve under its own weight, 15 is a valve body that opens and closes around a shaft 16, and 17 is an opening and closing valve. It is a hole.

In addition to installing the device near the supply pipe 1,
The device of the present invention is installed in a tube (not shown) having an appropriate length,
Additionally, the above-mentioned pipe may be attached to a normal water faucet or the like.

In this case, the device of the present invention can be easily attached to a conventional faucet or the like.

For example, if the hose 20 attached to the tip of the supply pipe 1 is immersed in the container 19 containing waste water during a water outage or water drain, the inside of the supply pipe 1 may be damaged. is in a negative pressure state due to a water outage, etc. In this case, the wastewater flows back into the supply pipe 1, and dirt and harmful substances enter with the sewage. It is completely impossible to extract it reliably through the .

In order to eliminate the above-mentioned negative pressure state, a hanging piece (not shown) provided in the water supply valve 2 had to be opened each time, which was extremely inconvenient.

Although the present invention is constructed as described above in order to improve the above-mentioned drawbacks, for example, when water is cut off, the inside of the supply pipe 1 on the inflow side of the water supply valve 2 gradually changes from a negative pressure state to a vacuum state due to the action of water cutoff, so the supply Because the balance of pressure inside and outside of pipe 1 collapses,
The valve body 6 moves upward in FIG. 2 due to the pressure difference,
The opening/closing hole 7 is automatically opened.

By this opening, the inside and outside of the supply pipe 1 are brought into communication via the suction hole 3, so the vacuum state inside the supply pipe 1 is completely destroyed and a positive pressure state is created. There is no need to release the hanging hook at all, and the vacuum inside the supply pipe 1 can be automatically removed.

Therefore, in the state shown in FIG. 1, there is no risk that wastewater will flow back into the supply pipe 1 or that dirt or harmful substances will enter together with the sewage, and water can always be supplied in a sanitary manner.

In addition, even when water is drained, the inside of the supply pipe 1 between the water supply valve 2 and the water drain valve 11 always maintains a positive pressure state, so that residual water and sewage do not accumulate in the supply pipe 1 as in the conventional case. Since the water can be completely drained without being stored, it has useful effects such as being able to reliably solve problems caused by residual water freezing in the winter.

Furthermore, if an air pump 9 connected to the opening/closing hole 7 is attached to the support tube 4 to forcibly supply air, the vacuum state inside the supply pipe 1 will be immediately destroyed. This makes it possible to quickly and reliably remove residual water, which is extremely convenient.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is an explanatory diagram of the invention, Fig. 2 is an enlarged detailed view of part a of Fig. 1, and Figs.
FIG. 5 is a partially cutaway sectional view showing another embodiment of the present invention. 1... Supply pipe, 2... Water supply valve, 3...
...Suction hole, 4...Support tube, 6.13,1
4.15...Valve body, 7...Opening/closing hole, 1
8...Piping.

Claims (1)

[Scope of utility model registration request] A water supply valve is provided in the middle of a water supply pipe or hot water supply pipe, and a support cylinder having a suction hole is attached to the supply pipe at a position near the inflow side of the water supply valve so that it can communicate freely, and this support cylinder is opened and closed to communicate with outside air. A hole is formed, and a valve body is attached to this opening and closing hole, which closes when the supply pipe is normal and opens when there is negative pressure, and a manual air pump that forcibly supplies air is attached to and detached from the opening and closing hole. A vacuum removal device for water supply, which can be freely attached and is characterized in that the pump is equipped with a suction valve for taking air into the pump.