JPS625107Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a container that is installed in an aquarium where a fixed amount of water is repeatedly injected and discharged, and that automatically adds a fixed amount of medicine to the water as the water is injected and discharged. In particular, it relates to improvements in the quantitative device.

Recently, for example, in flush toilet bowls, in order to add antifouling agents and fragrances to the flushing water, a certain amount of water is added from a container suspended in the tank by utilizing fluctuations in the water level caused by draining and pouring water into the tank. Containers adapted to release chemical solutions into water have been used.

A metering device used for this type of container, for example, is equipped with a measuring cup at the upper end of a float that moves up and down as the water level in the aquarium rises and falls, and a container containing a medicinal solution is shown upside down above the float. In many cases, a drug solution outlet opens into the measuring cup, and the drug solution flowing into the measuring cup closes the drug solution outlet of the container. When water is poured into the aquarium, the float rises as the water level rises, the chemical solution outlet of the container in the measuring cup is pushed in, and the chemical solution inside is discharged into the water, and as the water level falls, the float That is, the measuring cup is lowered and the drug solution in the container flows into the measuring cup until the drug solution outlet is closed with the drug solution.
(For example, Japanese Utility Model Application Publication No. 53-150797) Such quantitative addition devices for chemical solutions are extremely convenient because they operate based on fluctuations in the water level of the water tank and add the required amount when needed. Since the outlet simultaneously serves as an inlet for air into the upper space of the container, there is a drawback that the outflow of the medicinal solution into the measuring cup may become unstable.

On the other hand, it has been proposed to provide a separate outlet for the chemical solution and an inlet for air into the upper space of the container to stabilize the inflow of air and the outflow of the chemical solution. (Utility Model Publication No. 56-6754) However,
This air inlet is biased to one side of the measuring cup, which has the disadvantage that the amount of chemical solution is not constant due to the inclination of the float.

This invention aims to provide a quantitative addition device for chemical liquids that does not have any of the above-mentioned drawbacks.
A detailed explanation will be given below with reference to one embodiment shown in the drawings.

FIG. 1 is a longitudinal cross-sectional view showing the state of storage and sale of the quantitative addition device for chemical liquid of this invention, in which a float 2 having a measuring cup is fitted into the mouth of a container body 1 containing a chemical liquid. An inner stopper 3 is fitted, and a cap 4 is screwed over the metering device.

In FIG. 1, the float 2 has a concave portion 21 on its lower side that becomes a measuring cup when in use, a protrusion 22 that fits into the air hole of the inner stopper described later, and a guide on the upper end for moving the float. An appropriate number of guide wings 2
3, and has an engaging protrusion 24 at its lower end.

The inner plug 3 has an air hole 31 in the center, into which the protruding part 22 of the float fits, and has an air hole 31 at the bottom thereof so as to open into the space created at the upper end of the inverted container when the container body 1 is inverted. An air pipe 5 that reaches the bottom of the container is fitted and held therein. An appropriate number of chemical liquid outflow holes 32 are provided on the upper surface of the trapezoidal portion around the air hole 31 . The trapezoidal part 33 has a shape that is adapted to the concave part 21 of the float 3 as a whole, and its periphery is a circular groove part 34 that functions as a guide for the guide part 25 formed by the outer peripheral wall of the concave part 21 of the float 2. It is separated by an outer wall 35. A stopper 36 is screwed onto the upper end of this outer wall 35, and an engagement protrusion 3 is attached to one end of the stopper 36.
7 is provided.

This chemical liquid quantitative addition device operates as follows.

The chemical solution container main body 1 is placed in a water tank by removing the cap 4 and using a hanging device (not shown), so that when the water level rises, the quantitative addition device is submerged in the water, and when the water level falls, it is exposed above the water surface. be hung in.

FIG. 2 shows a state in which the water level has fallen and the water has not yet reached the float 2, and the float 2 is lowered by its own weight, and the engagement protrusion 24 of the guide wing 23 is engaged with the engagement protrusion 37 of the stopper 36. It is engaged and stopped. In this state, the chemical solution in the container body 1 flows out from the outlet 32 into the measuring cup 21 of the float 2, and as a result, air flows from the outside of the float 2 into the circular groove 34 of the inner stopper 3.
The air flows into the air hole 31 through the measuring cup 21 and is led to the space above the container body by the air pipe 5. When a certain amount of the chemical liquid flows out and the level of the chemical liquid in the measuring cup 21 reaches the outlet 32, the air inflow path is blocked by the chemical liquid, and the inflow of air and the outflow of the chemical liquid are stopped.

Next, water is supplied to the aquarium, and when the water level rises enough to submerge the metering device, the float 2 rises due to the buoyancy of the air pocket therein, as shown in FIG.
Accordingly, the trapezoidal part 33 of the inner stopper 3, which matches the shape of the measuring cup 21, is pushed into the measuring cup 21, and the medicinal liquid is supplied into the surrounding water as shown by the arrow, over the circumferential wall of the measuring cup 21.

Due to the above-described structure, the chemical liquid quantitative addition device of this invention has the following remarkable effects.

An air inlet that reaches the upper space of the container is provided separately from the chemical outlet, so that air can flow in and the chemical can flow out smoothly. Addition is made.

Since the shape of the trapezoidal part 33 of the inner stopper matches the shape of the measuring cup 21, there is little residual liquid in the measuring cup, and the protrusion 22 that fits into the air hole is small.
As a result, the medicinal solution can be stably poured into and discharged from the measuring cup without forming a film of the medicinal solution in the air hole 31 to prevent air from flowing in or clogging the air hole.

The float 2 moves up and down while being guided by the guide blades 23 and the guide part 25 formed by the outer circumferential wall of the concave part 21, so that water can be poured into the aquarium,
The measuring cup does not tilt or oscillate due to the shaking of the water as it is discharged, making stable measurement possible at all times.

Since the stopper 36 is screwed into the inner stopper 3, by changing the degree of screwing, the amount of chemical solution measured by the measuring cup 21 can be changed, such as the amount of water used, the strength of the fragrance, etc. The amount of chemical solution added can be freely changed according to the user's preference.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view of the storage state of the container equipped with the metering device of this invention, Figures 2 and 3 show the state of use, Figure 2 is the float in its lowered state, and Figure 3 is in the same raised state. Indicates the state in which 1... Container body, 2... Float, 3... Inner stopper, 4
... Cap, 5 ... Air pipe, 21 ... Measuring cup, 22 ... Projection, 23 ... Guide wing, 24 ...
...Engagement protrusion, 31...Air hole, 32...Medical solution outflow hole, 36...Stopper, 37...Engagement protrusion.

Claims (1)

[Scope of utility model registration request] An inner stopper 3 that fits into the mouth of a container containing a medical solution
and a float 2 that moves up and down guided by the inner stopper 3 as the water level in the aquarium moves up and down.
has a concave portion 21 on its upper surface that becomes a measuring cup in use, a protrusion 22 formed at the center of the concave portion and fitted into the air hole 31 of the inner stopper 3, and a protrusion 22 provided on the cylindrical outer peripheral wall and engaged with the end. The inner stopper 3 has a guide wing 23 formed with a mating protrusion 34 and a guide portion 25 formed by the outer circumferential wall of the concave portion, and the inner stopper 3 is a cylinder with an open end that fits into the mouth of the container. In this state, the upper surface is formed into a trapezoid that matches the shape of the measuring cup 21, and the air hole 31 has an air pipe 5 extending to the upper space of the container body in the center of the trapezoid, and the liquid flows out around the air hole. A hole 32 is opened, and a stopper 36 having an engaging protrusion 37 that engages with an engaging protrusion 24 formed on the guide wing 23 of the float 2 is screwed into the open cylindrical outer wall. Quantitative device for adding chemicals to aquariums, etc.