JPH026139Y2 - - Google Patents

Description

[Detailed explanation of the invention] A device that adds a fixed amount of chemical solutions such as fragrances and deodorants to the flushing water in the system tank of a flush toilet. It is operated by a float that moves up and down in response to rising water levels. FIG. 1 is an external view of this quantitative addition device, showing a chemical solution tank 1 and a float case 2 attached to it. Conventional fixed-quantity addition devices of this kind are equipped with a valve device for flowing out a fixed amount of chemical solution, and this valve device is made to operate in response to the movement of the float. Not only is there a problem with manufacturing accuracy, but even if a highly accurate valve device is provided, there is a risk that solid particles mixed in the chemical solution will remain on the valve seat and cause excess chemical solution to flow out.

The purpose of this project is to avoid the above-mentioned drawbacks of the conventional devices, and to provide a metered addition device with a simple structure and reduced manufacturing costs. . This figure shows the device in use, and the following and preceding descriptions adopt a hierarchical relationship in use.

In Figure 2, 3 is a float, and float 3
is built into the float case 2, the float 3 consists of a lower float acting part 4 and a receiver acting part 5 at the top, and the float case 2 has its top connected to the cylindrical body on the chemical liquid tank 1. The point that it is fixedly provided to the portion 7 is similar to the conventional one.

The feature of this invention is the special funnel 8 device. The lower portion of this device enters the cylindrical body portion 7, and a horizontally long rectangular air inlet 9 that opens in the radial direction is provided around the entrance portion. FIG. 3 shows the lateral length w and height h of the air inlet 9. The air introduction port 9 allows air to enter the funnel when the external space is filled with air, and the entered air becomes bubbles and floats toward the top of the chemical tank. If the chemical liquid exists as a blocking medium outside the air inlet 9, the chemical liquid in the chemical liquid tank 1 will not flow into the receiver action section 5.

A space 10 within the float case 2 is connected to an external space via an inlet/outlet 11 provided at the bottom of the float case.

The float 3 moves between the lowest position where the lower end of the float acting part 4 abuts the bottom 12 of the float case 2 and the highest position where the top of the receiver acting part 5 abuts the stopper 13 on the funnel 8. The lowest position appears when washing water is discharged, and the highest position appears when washing water is replenished.

The state in which the supply of cleaning water to the systank is completed is called the first state, and the state when the cleaning water in the systank is discharged is called the second state. To collect the chemical solution, use the air inlet port 9.
This occurs due to the transition from the first state to the second state, which is accompanied by an inflow of more air. This occurs due to the action of the plunger entering the organ acting portion 5. Figure 2 shows "first state → second state"
This shows the state when the medicinal solution is collected into the receptor acting part 5 through the process described above. In this state, the liquid level 14 of the medicinal solution in the receiver action section 5 is slightly above the position of the air inlet 9. △ in Figure 3 is liquid level 14
and the position of the air inlet 9. The distance △ varies depending on the properties of the chemical solution, but in most cases it is 1 mm.
That's about it. When the liquid level 14 rises above the position of the air introduction port 9, air is prevented from entering the chemical liquid tank 1 (in other words, the chemical liquid is prevented from flowing into the receiver acting section 5).

The device according to the present invention described above eliminates the valve device provided in the conventional device by using a special funnel 8, and is said to have a much simpler structure than the conventional device. There is no risk of an excessive amount of chemical solution spilling out.

[Brief explanation of the drawing]

Fig. 1 is an external view of the quantitative addition device for chemical liquid, Fig. 2 is a vertical sectional view showing the main parts of the quantitative addition device for chemical liquid according to the present invention, and Fig. 3 is an enlarged view showing the outline of the air inlet in Fig. 2. It is a diagram. 1... Chemical tank, 2... Float case, 3
... Float, 4 ... Float action section, 5 ... Receiver action section, 6 ... Top of float case, 7 ...
Cylindrical body part, 8...funnel, 9...air inlet, 10...
...Internal space of the float case, 11...Outflow inlet on the float case, 12...Bottom of the float case, 13...Stopper, 14...Liquid level of the drug solution when the drug solution is supplied to the receiver action section.

Claims (1)

[Scope of utility model registration request] In a type in which a float 3 having a receiver acting part 5 on the top that receives the chemical liquid supplied from the chemical liquid tank 1 is built in a float case 2 attached to the chemical liquid tank 1, the receiver acting part of the float 3 is A funnel 8 whose lower part enters the receiver action part 5 is attached to the chemical tank 1, and a horizontally long rectangular air inlet 9 which opens in the radial direction is provided in the part of the funnel 8 which enters the receiver action part 5. , a quantitative addition device for chemical solutions to systank.