JPS6027173Y2 - water supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water supply device, and more particularly to a water supply device characterized by the structure of a discharge opening.

Conventionally, as shown in FIG. 1, a primary tank 11 and a secondary tank 12 are connected by a U-shaped tube 13, and liquid is supplied to the primary tank 11 from a supply section 14, and the U-shaped tube 13 A water supply device is used in which liquid is transferred and stored in the secondary tank 12 through the tank 12 and drained from a drainage section 15 attached to the secondary tank 12.

In such a water supply device, when a large amount of liquid is supplied to the empty primary tank 11, the vicinity of the connection opening 11a of the primary tank 11 with the U-shaped pipe 13 is shown in FIG. 2, which is a partially enlarged sectional view. As shown in the figure, the air A in the U-shaped tube 13 cannot be extracted from the connection opening 11a due to the flowing liquid, and exists as bubbles, reducing the area of the flow path inside the tube. This may cause some phenomena.

For this reason, there is a drawback that the amount of liquid transferred from the primary tank 11 to the secondary tank 12 decreases and the storage time in the secondary tank 12 increases.

The present invention was developed in view of these points, and the connection opening to the U-shaped pipe of the primary tank is divided into two openings, one of which is located at a lower position than the other. It is an object of the present invention to provide a water supply device that can facilitate the removal of air bubbles in a U-shaped pipe and shorten the liquid storage time.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 3 is a partially enlarged sectional view showing an embodiment of the water supply device according to the present invention.

A U-shaped tube 13 is connected.

The connection opening 11a of the primary tank 11 has two openings 1
6 and 17, one opening 17 is opened on the same plane as the bottom of the primary tank 11, and the other opening 16 is opened so as to protrude upward from the bottom of the tank 11. are doing.

Therefore, the opening 17 is located at a lower position than the other opening 16.

By doing so, the liquid supplied to the primary tank 11 first flows down into the U-shaped tube 13 from the lower opening 17, and during this time, the air in the U-shaped tube 13 flows through the opening 16. Pass through and release.

When the inside of the U-shaped tube 13 is full of liquid, the liquid starts to accumulate in the primary tank, and when the water level reaches the height of the opening 16, it also starts flowing out from the opening 16, and the U-shaped tube 13 is filled with liquid. through which the rated flow rate flows to the secondary tank 12.

FIG. 4 is a partially enlarged sectional view showing another embodiment of the present invention.

In this example, the respective openings 18 and 19
The inlet part is tapered.

By tapering the inlet portions of the openings 18, 19 in this way, the flow of liquid becomes smooth.

Moreover, if the flow path area of the opening 18 located at a high position is made larger than that of the opening 19, the air can be more easily removed from the U-shaped tube 13.

FIG. 5 is a partially enlarged sectional view showing another embodiment of the present invention.

In this embodiment, the connection opening 1 of the tank 11 in FIG.
1a is provided to protrude inward of the primary tank 11,
A slit 20 is formed in the axial direction of the side wall.

FIG. 6 is a diagram showing an example of this slit, in which a slit 20a having a predetermined width is formed in the axial direction.

By providing the slit 20a in this way, the liquid supplied to the primary tank 11 first flows through the slit 20a, and by restricting the outflow flow rate, the air in the U-shaped tube 13 can be easily removed. be able to.

FIG. 7 is a diagram showing another example of this slit, and this slit 20b has a tapered shape that becomes narrower toward the bottom.

Since the slit 20b has a tapered shape, the flow rate flowing down through the slit 20b gradually increases, making air removal easier.

As described above, according to the present invention, when transferring liquid from the primary tank to the secondary tank through the U-shaped pipe, the air inside the U-shaped pipe can be easily extracted and the rated flow rate can be flowed. The storage time in the secondary tank can be shortened.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view of a conventional water supply device, Fig. 2 is a partially enlarged sectional view of the vicinity of the connection opening of the primary tank, and Fig. 3 is a partially enlarged sectional view showing an embodiment of the present invention. 4 and 5 are partially enlarged sectional views showing other embodiments of the present invention, and FIG.
This figure and FIG. 7 are partially enlarged views showing a modification of the embodiment shown in FIG. 5. 11...Primary tank, lla...Connection opening, 12...Secondary tank, 13...
...U-shaped tube, 16°17.18.19...opening, 20...slit.

Claims (1)

[Claims for Utility Model Registration] 1. A primary tank and a secondary tank are connected by a U-shaped pipe, and the liquid supplied to the primary tank is stored in the primary tank and the secondary tank. In a water supply device configured to discharge water from a secondary tank, the connection opening with the U-shaped pipe of the primary tank is formed into two openings, one of which is connected to the other. A water supply device characterized by being set at a lower position than an opening. 2. The water supply device according to claim 1, wherein the inlet portion of the opening is tapered. 3. The water supply device according to claims 1 and 2, wherein one of the openings has a smaller passage area than the other opening. 4. The water supply device according to claim 1, wherein the connection opening protrudes into the primary tank, and a slit is provided in the side wall of the connection opening. 5. The water supply device according to claim 4, wherein the slit provided in the side wall has a tapered shape that becomes narrower toward the bottom.