JPS582459Y2 - foam ejection device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved foam ejecting device, which is installed in a container filled with a foaming liquid, or by inserting a suction tube into the foaming liquid and injecting the piston rod into the foaming liquid. Bubbles can be ejected by sliding the container back and forth, and there is no leakage of the liquid content even if the container is tipped on its side.Since it does not use high-pressure gas or a pressure-resistant container, it is safe because there is no gas pollution, ignition, or explosion. It is particularly effective for foam cosmetics such as shaving foam and back foam.

Conventionally available foam ejection devices are aerosol type, requiring pressure-resistant containers, complicated valve mechanisms, being expensive, and causing gas pollution, ignition, and
There was a risk of explosion, and it was impossible to refill and reuse the contents in ordinary households, but the inventor of the present invention has conducted various experimental studies to find a method that does not have these drawbacks. This is how we came up with this idea.

A specific example of the present invention will be described below with reference to FIG. 1. An air cylinder 4 is connected to a foaming liquid cylinder 3 having a suction pipe 1 and a check valve 2, and A piston rod 5 is slidably attached to the piston rod 5, and a piston plate 7 for downward compression having a downwardly directed flexible protrusion 6 on the peripheral edge attached to the piston rod 5 is inserted into the air cylinder 4 so that the end edge of the protrusion 6 is attached to the piston rod 5. A liquid guide hole 9 is inserted into the cylinder 3 for foaming liquid and has a check valve 8, and an air guide hole 9 is opened in the cylinder 4 for air and has a check valve 10. A hole 11 is bored in the piston rod 5, and a liquid injection hole 9' having a smaller diameter than the bubble introduction hole 13 of the liquid introduction hole 9 and an air introduction hole 11 are formed in the bubble introduction hole 13 communicating with the injection port 12 of the piston rod 5. An air injection hole 11' having a diameter smaller than that of the bubble introduction hole 13 is opened.

14 is a spring inserted between the piston plate 7 and the bottom of the air cylinder 4; 15 is a porous body such as an open-cell sponge inserted between the bubble guide hole 13 and the spout 12;
6 is 01J, 17 is a container filled with foaming liquid, 1
8 is a container opening, 19 is a mesh, 20 is a spring, and 21 is a top plate.

In the present invention, when the air cylinder 4 is attached to the container mouth 18 and the piston rod 5 is pressed down, the air inside the foaming liquid cylinder 3 pushes up the check valve 8 and passes through the liquid guide hole 9. Spout 1
At the same time, the air in the air cylinder 4 is also pushed up by the check valve 10, passes through the air guide hole 11, and is discharged from the jet port 12.

When the piston rod 5 is released, the piston rod 5 and the piston plate 7 are pushed up by the elasticity of the spring 14 and returned to their original positions.

During the return, the inside of the foaming liquid cylinder 3 becomes negative pressure, the liquid guide hole 9 is closed by the check valve 8, and the foaming liquid pushes up the check valve 2 from the suction pipe 1 and becomes foamable. The liquid flows into the liquid cylinder 3 and forms a gap between the tip edge of the protrusion 6 on the peripheral edge of the piston plate 7 and the air cylinder 4, and a gap between the piston rod 5 and the top plate 21 of the air cylinder 4. Air is sucked into the air cylinder 4 through the gap 19.

The air guide hole 11 is closed by the check valve 10, and the air outlet 1
No more air is sucked than 2.

When the piston rod 5 is pressed down while the foamable liquid cylinder 3 is filled with foamable liquid, the foamable liquid inside the foamable liquid cylinder 3 is discharged by the check valve 2. Container 17
The check valve 8 is pushed up without backflowing inward, and the liquid flows through the liquid guide hole 9 into the bubble guide hole 13 through the liquid injection hole 9', which has a smaller diameter than the bubble guide hole 13, and the air inside the air cylinder 4. The bubbles push up the check valve 10 without leaking from the periphery of the piston plate 7, pass through the air guide hole 11, and flow violently into the bubble guide hole 13 through the air injection hole 11', which has a smaller diameter than the bubble guide hole 13. The foamable liquid and air mix violently in the holes 13 while creating a vortex to form bubbles, which are further formed into fine particles by the porous body 15 and ejected from the spout 12.

The foaming liquid applicable to the present invention is a mixture of one or more natural and synthetic surfactants.
% aqueous solution containing fragrance, moisturizer, foam fixative,
Coloring agents and the like are appropriately added, and if the bubbles in the porous body 15 are fine, the bubbles ejected will also be fine.
A material with a bubble that matches the foam to be obtained is used, and if necessary, several layers of porous material with different cell sizes are used, and if the foam can be large, a porous material is used. It is not necessary to use the mass body 15.

Furthermore, if the spring 14 is damaged or if the spring 14 is not inserted, the pushed-in piston rod 5 can be manually pulled out to blow out the bubbles.

Note that the amount of air discharged from the air cylinder 4 is 3 times the volume of the foamable liquid discharged from the foamable liquid cylinder 3.
~50 times.

The present invention spews out a substantially constant amount of foam by attaching it to a container filled with a foaming liquid or by inserting the suction tube 1 into the foaming liquid and sliding the piston rod 5 back and forth. When attached to a container, there is no leakage of the liquid content even if the container is tipped on its side, and the liquid can be squirted out as foam without leaving almost any foaming liquid.

In addition, when the present invention is attached to a container, it can be removed from the container and refilled with foaming liquid, and the container can be heated with hot water to produce warm foam. Moreover, since high-pressure gas, volatile substances, and pressure-resistant containers are not used, there is no risk of air pollution, pollution, flammability, etc. caused by gas.
It is non-explosive and safe, and is effective for generating foam for shampoos, shaving, bags, etc.

Another specific example shown in FIG. 2 has a spring 14 inserted between the nozzle rod 22 at the upper end of the piston rod 5 and the top plate 21 of the air cylinder 4, and another specific example shown in FIG. 14 is inserted between the lower end surface of the piston rod 5 and the bottom plate of the foaming liquid cylinder 3, and the same reference numerals as in the specific example shown in FIG. 1 indicate the same parts, and the operation and effect are as shown in FIG. This is the same as the specific example shown.

[Brief explanation of the drawing]

FIGS. 1, 2, and 3 are cross-sectional views of three specific examples. 1 is a suction pipe, 2 is a check valve, 3 is a cylinder for foaming liquid, 4
is an air cylinder, 5 is a piston rod, 7 is a piston rod,
8 is a check valve, 9 is a liquid guide hole, 10 is a check valve, 11 is an air guide hole, 12 is a jet port, and 13 is a bubble guide hole.

Claims (1)

[Scope of utility model registration request] An air cylinder 4 is connected to a foaming liquid cylinder 3 having a suction pipe 1 and a check valve 2, and a piston rod 5 is slidably mounted inside the foaming liquid cylinder 3. A piston plate 7 for downward compression attached to the rod 5 is slidably inserted into the cylinder 4 for air, and a liquid guide hole 9 opening into the cylinder 3 for foaming liquid and having a check valve 8 is connected to the cylinder 4 for air. An air guide hole 11 that opens into the cylinder 4 and has a check valve 10 is bored in the piston rod 5, and a bubble guide hole 1 that communicates with the spout 12 of the piston rod 5.
3, a liquid injection hole 9' having a smaller diameter than the bubble introduction hole 13 of the liquid introduction hole 9; and an air injection hole 11' having a smaller diameter than the bubble introduction hole 13 of the air introduction hole 11.