JP3217719B2 - Foam spouting container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a foam ejection container.

[0002]

[Prior art]

A conventional foam ejection container is
2. Description of the Related Art A type in which a high-pressure gas such as Freon gas is stored in a container together with a foaming liquid and bubbles are generated at the time of ejection is widely used. However, due to the problem of air pollution caused by Freon gas in recent years, a foam ejection container that does not use high-pressure gas has been proposed.

[0003] As such, Japanese Patent Application No. Hei 2-5150 is disclosed.
No. 82 is proposed. This container has a double cylinder in which an air cylinder for an air pump and a liquid cylinder for a liquid pump provided concentrically are provided inside an opening of a container containing a liquid, and a liquid cylinder. A liquid suction pipe communicating the bottom of the container with the bottom of the container, a piston body provided integrally with a pneumatic piston and a liquid piston that move up and down in the air cylinder and the liquid cylinder, respectively, A nozzle body provided at the upper end of the piston body and having a hole for blowing bubbles, an air flow path for communicating the hole with the inside of the air cylinder, and a liquid flow for communicating the inside of the liquid cylinder with the hole. A first check valve disposed in the middle of the liquid flow path, and a second check valve disposed in the liquid cylinder.
A check valve, a porous body disposed in the hole, a biasing spring for biasing the piston body toward the top dead center with respect to the double cylinder, and a container that communicates the liquid in the container with the outside air outside the container. An outside air introduction hole formed in the air cylinder and having an operating valve to prevent the inside from becoming negative pressure, and a lid body for fixing the double cylinder to the container and guiding the piston through the piston Wherein the porous body is formed of a porous sheet-like body, and a merging point where the flow passage and the air passage merge with each other is provided on the front side of the location where the porous sheet-like body is disposed. A mixing chamber for mixing liquid and air is provided, and the cylinder for air is moved up and down with a difference in height between the sliding part of the piston for air and the sliding part of the piston for liquid. It extends below the bottom surface and uses an air cylinder and air piston. The outside air introduction into the air chamber are made to perform through the gap through the outer peripheral surface and the lid of the air piston has a third check valve configured by providing the air piston.

In the above-mentioned conventional container, a junction where the flow passage and the air passage merge is provided in the nozzle body at the upper end of the pump. Therefore, the liquid flows into the air cylinder from the junction through the air passage. May flow back and liquid may accumulate in the air cylinder.

[0005] Further, since two pumps are required, the size of the pump becomes large, and accordingly, the mouth and neck of the container must be made large, and there are many structural restrictions, and the appearance is not good.

[0006] The present invention proposes an excellent foam ejection container which has solved the above-mentioned disadvantages of the prior art.

[0007]

In order to solve the above-mentioned problems, the container according to the present invention has a mounting cap 6 fitted to the mouth and neck 5 of a container body and a cap 6 which is suspended from the top wall 10 into the container body 2. Cylindrical cylinder 7 having a bottom and a bottom wall of the cylinder 7
A mixing chamber 12 for gas / liquid mixing, which is defined at the center of the lower part of the cylinder 7 and is unidirectionally communicated into the cylinder 7 via a suction valve 14 provided at the center of the cylinder bottom wall 7a;
A suction pipe 30 having an upper end opened therein and a lower end hanging down from the inner bottom of the container body 2, and an upper end penetrating through the cap top wall 10 and protruding upward from the top wall 10 so as to be vertically movable. A discharge pipe 20 having upper and lower end faces opened in which a projecting annular piston 21 is slidably and airtightly fitted to the inner periphery of the cylinder 7 and a discharge pipe extending from the upper end of the discharge pipe 20.
A press-down head 24 with a nozzle that moves up and down integrally with 20,
A discharge valve 25 provided in a flow path from the discharge pipe 20 to the tip of the nozzle 22, an elastic member 27 that constantly urges the vertically moving member 8 including the discharge pipe 20 and the pressing head 24 upward,
A foaming layer 28 is provided laterally at the lower end opening of the cylinder 7, and a through hole 17 with a check valve 18 is formed at the upper end of the peripheral wall 7b of the cylinder 7 to communicate unilaterally into the container body 2. Through the cylinder 7 so as to be unidirectionally introduced into the container body 2. One end is opened in the cylinder peripheral wall 7b below the check valve 18, and the other end passes through the cylinder peripheral wall 7b and the bottom wall 7a. An air passage 19 opened in the mixing chamber 12 was provided.

When the screw between the vertically movable member 8 and the mounting cap 6 is released from the state shown in FIG. 1, the vertically movable member 8 is raised by the action of the spring 27 to be in a dischargeable state. When the vertically moving member 8 is pressed down from this state, the bubbles in the cylinder 7 below the annular piston 21 are pressurized and pass through the discharge pipe 20 to discharge the valve 25.
And is ejected from the nozzle 22.

Next, when the vertically moving member 8 rises, the pressure in the cylinder 7 below the piston 21 becomes negative, the suction valve 14 opens, and bubbles are introduced into the cylinder 7. At this time, at the same time, the liquid in the container is sucked up into the mixing chamber 12 through the suction pipe 30, and the air in the upper part of the container 2 is introduced into the mixing chamber 12 through the ventilation path 19, where the gas After the mixture is mixed, the mixture is foamed through the foam layer 28 and the suction valve
It is introduced into cylinder 7 via 14.

Further, in the container 2 under negative pressure, the outside air introduced into the cylinder 7 through the gap between the through hole at the center of the mounting cap 6 and the outer surface of the discharge pipe 20, as shown in FIG. The check valve 18 is opened from the gap therebetween through the through hole 17 and introduced.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a foam ejection container. The container 1 includes a container 2 and a pump 3.

The container 2 is made of synthetic resin, glass, or the like, and has a cylindrical body 4 and a mouth and neck 5 standing upright.

The pump 3 comprises a mounting cap 6, a cylinder 7, and a vertically moving member 8 as main members.

The mounting cap 6 has a top wall 10 extending from an upper end edge of a peripheral wall 9 screwed to the outer periphery of the container body neck and neck portion 5 and a head at an inner peripheral portion of a circular window hole formed in the center of the top wall 10. It is constituted by arranging a thread 11 to be screwed.

The cylinder 7 has a bottomed cylindrical shape whose upper end is fitted and fixed to the mounting cap top wall 10 and whose lower end is hung down in the container body 2. A mixing chamber 12 for mixing the components is defined. In addition, a through hole communicating with the mixing chamber 12 is formed in the center of the bottom wall 7a, and a short cylinder 13 is erected in the cylinder 7 from the periphery of the through hole.
A suction valve 14 having a ball valve body is provided in the short cylinder 13 to unilaterally communicate from the mixing chamber 12 into the cylinder 7.

Further, a suction pipe 30 having an upper end opened at the bottom wall of the mixing chamber 12 and hanging down to the bottom of the container body is provided to communicate between the container body 2 and the mixing chamber 12.

Further, an enlarged diameter portion 15 is provided in which the upper end of the inner peripheral surface of the cylinder 7 is enlarged, and a vertical rib 16 whose inner surface is flush with the inner surface of the cylinder 7 is provided in the enlarged diameter portion 15. Provided at intervals. Further, a through hole 17 communicating with the inside of the container body 2 is formed in the cylinder peripheral wall 7b immediately below the enlarged diameter portion 15, and the through hole 17 is formed.
A check valve 18 is provided on the outer surface to communicate unilaterally from the inside of the cylinder 7 to the inside of the container 2. Also, the peripheral wall below the check valve 18
An air passage 19 is provided, one end of which is opened on the left and right sides 7b and the other end of which is opened in the mixing chamber 12 through the cylinder peripheral wall 7b and the bottom wall 7a.

The vertical moving member 8 has a cylindrical discharge pipe 20 having an upper and lower end opening with an upper end protruding above the cap top wall 10 so as to be able to move up and down and a lower end hanging down into the cylinder 7 so as to move up and down. An annular piston 21 projecting from the outer periphery of the lower end of the discharge pipe 20 and having an outer peripheral edge fitted to the inner peripheral surface of the cylinder 7 so as to be liquid-tight, air-tight and slidable up and down; And a push-down head 24 internally formed with a flow passage 23 extending from the upper end opening of the discharge pipe 20 to the ejection hole of the nozzle 22 opened to the front.
Further, a discharge valve 25 having a ball valve body is provided at an upper end portion of the inside of the discharge pipe 20 of the vertically moving member 8 so as to be unidirectionally communicated from the inside of the cylinder 7 to the flow passage 23.

A screw 26 for screwing with the screw 11 of the mounting cap 6 is provided on the outer periphery of the upper part of the discharge pipe 20 of the vertically moving member 8 so as to be lockable in a lowered state. And a coil spring 27 as an elastic member interposed between the cylinder bottom wall 7a and the cylinder bottom wall 7a.

A foaming layer 28 is provided in the upper part of the mixing chamber 12. The foaming layer 28 is formed of a mesh-like porous sheet, and is arranged laterally at the lower end opening of the cylinder bottom wall 7a so that when the gas-liquid mixture passes, the foaming is performed and foam is formed. .

A foam regulating layer 29 made of a porous sheet is also provided horizontally at the opening of the lower end of the discharge pipe 20 of the vertically moving member 8. This foam regulating layer 29 functions to make the foam once foamed in the lower foaming layer 28 substantially uniform. The foaming layer 28 and the foam-regulating layer 29 are not limited to the above-described porous sheet, but may be any material having a foaming function and a foam-regulating function used in conventional containers of this kind, such as a porous member. is there.

In this embodiment, the cylinder 7 is made up of the inner wall material A and the outer wall material B so that the cylinder 7 can be easily formed. Each of the above members is formed of a synthetic resin.

[0024]

As described above, the container according to the present invention has the above-mentioned structure, and the liquid and the air are joined under the suction valve at the lower end of the cylinder. There is no danger that the liquid will flow into and accumulate in the pneumatic cylinder and cause an operational failure of the up-down moving member.

Further, since only one cylinder is used, the structure is simple and easy to manufacture as compared with a conventional container of this kind, and the size of the pump can be made small. Therefore, there is less structural restriction compared to a conventional container in which these portions can be formed only relatively large.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a main part of an embodiment of the container of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the embodiment.

[Explanation of symbols]

2 ... container body, 5 ... mouth and neck, 6 ... mounting cap, 7 ... cylinder, 8 ... vertical moving member, 10 ... cap top wall, 12 ... mixing chamber, 14 ... suction pipe, 17 ... through hole, 18 ... check Valves, 20: Discharge pipe, 21: Annular piston, 22: Nozzle, 24: Push-down head, 25: Discharge valve, 27: Coil spring, 28: Foaming layer,
30… Suction valve

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 63-69578 (JP, U) Japanese Utility Model Sho 63-149265 (JP, U) Japanese Utility Model Sho 49-38571 (JP, Y1) International Publication 92/8657 (WO, A1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B05B 11/00 B65D 47/06 B65D 47/34

Claims (1)

(57) [Claims] 1. A mounting cap 6 fitted to a mouth 5 of a container body, a bottomed cylindrical cylinder 7 suspended from the top wall 10 of the cap 6 into the container body 2, and a bottom of the cylinder 7 wall
A mixing chamber 12 for gas / liquid mixing, which is defined at the center of the lower part of the cylinder 7 and is unidirectionally communicated into the cylinder 7 via a suction valve 14 provided at the center of the cylinder bottom wall 7a;
A suction pipe 30 having an upper end opened therein and a lower end hanging down from the inner bottom of the container body 2, and an upper end penetrating through the cap top wall 10 and protruding upward from the top wall 10 so as to be vertically movable. A discharge pipe 20 having upper and lower end faces opened in which a projecting annular piston 21 is slidably and airtightly fitted to the inner periphery of the cylinder 7 and a discharge pipe extending from the upper end of the discharge pipe 20.
A press-down head 24 with a nozzle that moves up and down integrally with 20,
A discharge valve 25 provided in a flow path from the discharge pipe 20 to the tip of the nozzle 22, an elastic member 27 that constantly urges the vertically moving member 8 including the discharge pipe 20 and the pressing head 24 upward,
A foaming layer 28 is provided laterally at the lower end opening of the cylinder 7, and a through hole 17 with a check valve 18 is formed at the upper end of the peripheral wall 7b of the cylinder 7 to communicate unilaterally into the container body 2. Through the cylinder 7 so as to be unidirectionally introduced into the container body 2. One end is opened in the cylinder peripheral wall 7b below the check valve 18, and the other end passes through the cylinder peripheral wall 7b and the bottom wall 7a. A foam ejection container characterized by having a ventilation path (19) opening into the mixing chamber (12).