JPS6230035B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid dosing device used, for example, in a fully automatic pre-washing machine.

Conventional liquid dosing devices manually measure and inject liquid during use. However, when using the conventional method, the finishing agent is weighed and added each time it is used, so automatic loading is not possible. Especially in fully automatic front washing machines, when the finishing agent is automatically added in the middle of rinsing, it is necessary to manually measure and add the finishing agent once. There were drawbacks such as the fact that it had to be done automatically.

The present invention was made in view of the above-mentioned situation, and an object of the present invention is to provide a liquid dispensing device that can automatically measure and dispense liquid.

The liquid input device of the present invention includes a container having a liquid input port that is sealed through a stopper, and an air port that is built into the container and communicates with the atmosphere through a communication port at the bottom, and has an air port that communicates with the atmosphere at the top. a pressure regulating pipe having a liquid outlet formed on a wall surface of the container below the mouth, the upper end of which is formed lower than the upper end of the communication port, and a pressure regulating pipe that is attached to the outer wall of the opening of the liquid outlet of the container so as to be slidably in contact with water, It has a communication part that can communicate with the liquid outflow port and a liquid discharge port at the bottom, and by sliding displacement with respect to the container, the liquid in the container is measured to a constant amount and discharged each time. It is provided with a liquid receptacle formed in such a way that it can be used.

An embodiment of the liquid injection device of the present invention will be described below with reference to FIGS. 1 to 6. Figure 1 is an external perspective view of the liquid injection device, Figure 2 is an explanatory diagram of the device shown in Figure 1 immediately after removing the stopper and injecting liquid into the container, and Figure 3 is the state shown in Figure 2 with the stopper closed to adjust the pressure. A cross-sectional view when a certain amount of liquid in the pipe is put into the liquid receiver, Figure 4 is a cross-sectional view when the liquid in the liquid receiver in Figure 3 is discharged, and Figure 5 is a cross-sectional view after the discharge is completed from the state shown in Figure 4. , FIG. 6 is an explanatory diagram when a certain amount of liquid in the container flows out into the liquid receiver from the state shown in FIG. 5. In Figures 1 and 2, 1 is a stopper;
2 is an air port communicating with the atmosphere, 3 is a cylindrical container,
Reference numeral 4 denotes an inlet opened in the ceiling 6 of the container 3 and a stopper 1.
It is designed to be removably sealed.
Inside the container 3 is built-in a pressure regulating tube 8 whose lower part is communicated with through a communication part 15 and whose upper end has an air port 2 opened. A liquid outlet 11 is opened at a position below the air port 2 of the pressure regulating pipe 8 of the container 3 . A liquid receiver 5 is rotatably and watertightly attached to the outer periphery of the liquid outlet 11 of the container 3, and the liquid receiver 5 includes:
A communication portion 10 that can be communicated with by rotating the liquid receiver 5 is provided on the sliding side opposite to the liquid outlet 11, and a liquid discharge port 12 is provided on the lower surface. The liquid receiver 5 has a bottom plate portion 9 sandwiched between a water stop plate 13 integrally formed at the lower part of the bottom plate of the container 3 and the lower surface of the bottom plate of the container 3, and the liquid receiver 5 is rotatably supported by the container 3. The liquid outlet 11 and the liquid discharge port 12 are opened and closed depending on the rotational position of the liquid receiver 5 with respect to the container 3.

When pouring the liquid 7 into the container 3, as shown in FIG. 2, remove the stopper 1, rotate the liquid receiver 5 in the direction of the arrow in FIG. 11, close the liquid outlet 11, and pour the liquid 7. Inject from input port 4. At this time, liquid 7
The liquid level in the container 3 and the liquid level in the pressure regulating tube 8 are both at atmospheric pressure, so they are the same. After injecting the liquid 7 in this way, attach the stopper 1 to seal the inlet 4 and connect the liquid receiver 5 so that the liquid outlet 11 communicates with the liquid receiver 5.
When rotated relative to the container 3, the state shown in FIG. 3 is obtained.
That is, by opening the liquid outlet 11 from the state shown in FIG. 2, the liquid 7 in the pressure regulating tube 8 flows out into the liquid receiver 5, and the upper part of the pressure regulating tube 8 becomes empty.

The liquid 7 flows out into the liquid receiver 5, and the liquid level reaches the container 3.
When the height H of the lower communication port 15 between the inside and the lower end of the pressure regulating tube 8 is reached, the inside of the container 3 and the liquid receiver 5
is becoming more balanced. That is, assuming that the atmospheric pressure is P ₀ , the pressure inside the container 3 is P, and the density of the liquid is ρ, the condition shown in FIG. 3 is balanced by equation (1).

P + ρgH ₀ = P ₀ + ρgH ... (1) However, H ₀ : Height of the liquid level in the container 3 Here, since the relationship between H ₀ and H is H ₀ > H, P and P ₀ The relationship is P ₀ > P, and the pressure P inside the container 3 is smaller than the atmospheric pressure P ₀ , so the liquid 7 inside the container 3 does not flow out from the liquid outlet 11 to the liquid receiver 5. It has become a principle.

FIG. 4 is a cross-sectional view of the state in which the liquid 7 in the liquid receiver 5 is discharged from the liquid discharge port 12, and at this time, the first
By rotating the liquid receiver 5 shown in the figure in the direction of arrow A, the liquid outlet 12 is opened from the water stop plate 13.
The liquid 7 is adapted to flow out. In this case, the liquid outlet 11 is closed as the liquid receiver 5 rotates, and when the liquid 7 in the liquid receiver 5 is completely discharged from the liquid outlet 12, the state shown in FIG. 5 is achieved.

Next, the operation of filling the liquid 7 in the container 3 into the liquid receiver 5 will be explained with reference to FIG. In order to fill the liquid receiver 5 with a certain amount of liquid 7 as shown in FIG. 3, the liquid receiver 5 is rotated to the state where the liquid outlet 11 is opened as shown in FIG. As shown in FIG.
1 flows out into the liquid receiver 5. At this time, communication port 2
When the liquid h in the pressure regulating tube 8 decreases, the air 14 enters the container 3 and the pressure inside the container 3 increases.
becomes higher than the pressure P shown in FIG. 5, and the liquid 7 becomes
Air 14 enters the container 3 and flows out in proportion to the increase in pressure within the container 3. When the liquid 7 in the container 3 flows out into the liquid receiver 5 as shown in FIG. 6 and becomes the state shown in FIG. It stops at P ₀ .

Further, the height h of the upper end of the liquid outlet 11 is smaller than the height H of the outlet of the communication portion 15 of the pressure regulating tube 8 in the lower part of the container 3 . That is, unless h<H,
When changing from the state shown in FIG. 5 to the state shown in FIG. 6, when H=h, the pressure inside the pressure regulating pipe 8 and the pressure at the outlet 11 are equal, so atmospheric pressure causes the liquid inside the pressure regulating pipe 8 to The liquid level h does not change, air does not enter the container 3 from the pressure regulating tube 8, and the air 14 and liquid 7
cannot be replaced, and the liquid 7 no longer flows out from the container 3. Therefore, the relationship between h and H needs to be h<H. If h<H, the height H of the liquid level in the pressure regulating tube 8 is a pressure of P ₀ +ρg(H-h),
The liquid flows out from the liquid outlet 11 to the liquid receiver 5, and H>h is set so that P ₀ +ρg(H−h)>P.

Note that by rotating the liquid receiver 5 with respect to the container 3 through automatic driving means, it is possible to automatically measure and discharge a constant amount at all times.

As described above, according to the liquid injection device of this embodiment,
By simply rotating the liquid receiver, the liquid in the container can be measured in a fixed amount via a pressure regulating pipe installed in the container, and this measured liquid can be discharged at any time, so measuring and dispensing can be done automatically. As long as there is liquid in the container, it can be operated multiple times, improving operability.

As described above, the liquid injection device of the present invention has the effect of automatically measuring and injection of liquid and improving operability.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of the liquid injection device of the present invention, Fig. 2 is an explanatory view of the device shown in Fig. 1 immediately after removing the pillar and injecting liquid into the container, and Fig. 3 is the state shown in Fig. 2. A cross-sectional view when the stopper is closed and a certain amount of liquid in the pressure regulating pipe is poured into the liquid receiver. Figure 4 is a cross-sectional view of the liquid receiver in Figure 3 when the liquid is being discharged. Figure 5 is from the state shown in Figure 4. FIG. 6, which is a sectional view after the discharge is completed, is an explanatory diagram when a certain amount of liquid in the container flows out from the state shown in FIG. 5 into the liquid receiver. 1... Plug, 2... Air port, 3... Container, 4... Inlet,
5...Liquid receiver, 8...Pressure regulating pipe, 10...Communication part, 11...
Liquid outflow port, 12...Liquid discharge port, 15...Communication port.

Claims (1)

[Claims] 1. A container having a liquid inlet that is sealed via a stopper, and an air port that is built into the container so that the lower part communicates with the atmosphere via a communication port, and that has an air port that communicates with the atmosphere in the upper part, and that is located on the wall surface of the container below the air port. a pressure regulating pipe having a liquid outlet whose upper end is formed lower than the upper end of the communication port; and a pressure regulating pipe that is attached to the outer wall of the opening of the liquid outlet of the container with a water seal so as to be able to freely slide into contact with the liquid outlet, and A liquid that has a communicating part and a liquid discharge port at the bottom, and is formed so that the liquid in the container can be measured and discharged to a constant amount each time by sliding displacement with respect to the container. A liquid injection device characterized by being provided with a receiver.