JPS6014839Y2 - Sterile water faucet - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of a faucet that uses sterile water, such as hand washing water in an operating room, and the improvement of a faucet that uses sterile water. This prevents the sterile water remaining in the sterile water supply pipe from being contaminated by bacteria.

To supply sterile water to a sterile water faucet, a solenoid valve is installed in the middle of the pipe that carries sterile water from the sterile water storage tank to the faucet, and water is turned on and off from the faucet by opening and closing the solenoid valve. .

However, when the solenoid valve is closed after dispensing sterile water from the faucet, the sterile water between the faucet opening and the solenoid valve drips from the opening, and air containing suspended bacteria enters the faucet and pipes instead. This will contaminate the water droplets that adhere to the inner wall surface.

The faucet of the present invention thus prevents contamination of the sterile water supply path due to air entering after use.

The present invention will be described below with reference to drawings showing embodiments.

The drawing is a longitudinal sectional view showing an embodiment of the faucet of the present invention.

On the bottom surface of the water reservoir 2, one end of which is closed (and the ultraviolet germicidal lamp 1 is watertightly inserted through the opening at the other end, there is a connecting pipe 4 for connecting the end of a pipe 3 leading to a sterile water tank (not shown). A cylindrical body 5 is connected thereto.

A shower plate 7 having a large number of small holes is fixed to the lower part of the cylinder 5 via a trumpet-shaped enlarged diameter tube 6.

Further, a flange 9 with a circular hole 8 in the center is formed inside the cylinder 5, and a bottomed hole with an upper opening in the center is provided below the flange 9 inside the cylinder 5. A flange 1 having a cylindrical portion 10 and having a through hole 11 on the outer periphery of the cylindrical portion 10.
A spring receiver 13 formed with 2 is fitted and fixed.

A compression spring 14 is housed in the cylindrical portion 10 of the spring receiver 13, and a sphere 15 supported on the upper end of the spring 14 comes into contact with the opening edge of the lower end of the circular hole 8 to close it.

The opening edge of the lower end of the circular hole 8 is chamfered so that the sphere comes into contact with it without any gap.

That is, by bringing the sphere 15 into elastic contact with the lower end of the circular hole 8 by the spring 14, a check valve is constructed that allows sterile water to flow only from top to bottom within the circular hole 8.

Reference numeral 16 denotes a small hole for draining water, which is bored at the bottom of the cylindrical portion 10 of the spring receiver 13.

Next, the operation of the sterile water faucet of the present invention constructed as described above will be explained.

When sterile water flows out from a faucet, open a solenoid valve (not shown) installed in the middle of the pipe 3 and send sterile water from the pipe 4 into the water reservoir 2. The water pressure causes the sphere 15 of the cylinder 5 to resist the spring 14. The sterile water passes through the circular hole 8 and the through hole 11 and flows out from the small hole in the shower plate 7.

To stop the water from flowing out, close the solenoid valve in the middle of the pipe 3 to reduce the water pressure in the water reservoir 2, and the sphere 15 is pushed up by the spring 14 and comes into contact with the lower opening edge of the circular hole 8, so that the flange 9 The sterile water above the flange 9 is blocked from flowing out, and the air entering from the shower plate 7 is also prevented from entering above the flange 9.

Therefore, the area that is contaminated by the ingress of air is limited to a narrow area below the flange 9.

Contamination in a narrow area below the flange 9 does not pose a practical problem because it can be cleaned by simply pouring a small amount of sterile water before the next use.

It is also conceivable that bacteria contained in the air entering from the shower plate 7 may enter deeper than the check valve through the minute gap between the sphere 15 and the circular hole 8 and contaminate the sterile water in the water reservoir 2. Therefore, the ultraviolet germicidal lamp 1 in the water reservoir 2 is turned on to keep the sterile water in the water reservoir 2 clean at all times to prevent contamination of the connecting pipe 4 and the pipe 3 upstream of the water reservoir 2. .

Since the volume of the water reservoir 2 is small and the water inside is stationary, the ultraviolet germicidal lamp 1 may be small and does not need to be turned on continuously, but it is sufficient to turn it on intermittently at regular intervals.

In addition, although the above explanation was about the embodiment of the faucet that discharges sterile water in a shower-like manner, a faucet that does not discharge sterile water in a shower-like manner can be configured in the same manner.

Since the sterile water faucet of the present invention is constructed and operates as described above, it can effectively prevent the inside of the sterile water supply channel from being contaminated by bacteria floating in the air, and always provide clean sterile water. It has great practical effects, such as a small UV germicidal lamp and an intermittent lamp, which extends its lifespan.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view showing an embodiment of the faucet of the present invention. 1: Ultraviolet germicidal lamp, 2: Water reservoir, 3: Pipe, 4: Connecting pipe, 5
: Cylindrical body, 8: Circular hole, 9: Flange, 10: Cylindrical part, 11
: Through hole, 12: Flange, 13: Spring receiver, 14: Compression spring, 15: Sphere, 16: Small hole.

Claims (1)

[Scope of utility model registration request] A cylindrical body 5 is connected to the lower surface of a small-volume water reservoir 2, which has a connecting pipe 4 for connecting a pipe 3 leading to a sterile water tank, and has an ultraviolet germicidal lamp 1 inserted therein in a watertight manner. A sterile water faucet equipped with a check valve that allows sterile water to flow only from top to bottom.