JPS58128165A - Apparatus for dispensing foam little by little - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a 7 ohm dispensing device, particularly having an outer container and a relatively small auxiliary inner container filled from the outer container, which requires a small air supply for operation. This invention relates to a foam dispensing device.

A non-aerosol foam dispensing device has recently been developed that consists of a relatively small volume, hand-held, reservoir-style Styze teattle. For example, U.S. Patent No. 470 Sagi 457 and @
& 937.544 works satisfactorily for its contemplated purpose, but is not suitable for use in large containers where it is more economical to use. do not have. The reason is that in order to produce good quality 7 ohms, the dimensions of each part for foam generation must be relatively small, making it difficult to control the pressure and volume of the foaming liquid. Because there is.

The foam dispensing device of the present invention provides a means to adapt foam generation systems, currently limited to use with light snow containers, to use with much larger capacity containers.

The foam dispensing device of the present invention also provides a means for using a large volume container to produce superior 7 ohms by using an internal auxiliary container that is fed with foam supply waves from a larger outer container. give.

Briefly, the foam dispensing device of the present invention comprises an external insulator for containing a foamable liquid, having an ejection boat.
and a foam dispensing device which is in phase with the container and separates an area adjacent the discharge port from the interior of the container. an inner container disposed within the container and having an opening in communication with the outer container; a closure member for the inner container having lateral pressure air introduction means and foam ejection means; and a foam generator in communication with the 7 ohm output means. the brewing foam generating means includes an inwardly extending conduit having an opening communicating with the interior of the inner container, and valve means for opening the inner container; The valve means closes the line inlet when the air pressure in the inner vessel is increased to supply the foaming liquid from the inner vessel to the conduit of the said seven ohm generating means, and both valve means The threat is that when the air pressure is reduced, the opening is opened to allow the foaming liquid to flow from the outer container to the inner container. In a preferred embodiment, the valve means includes a flexible member for selectively opening an opening in the inner container.

Pump means for supplying pressurized air to the air introducing means is provided, and the closing member includes a cap having a through passage constituting the air introducing means. Said Naikai Sen-
shall include a cylindrical member integrally formed with the middle tube.

The inner container has an inner end wall, and the opening is provided in the end wall.

The integrally formed cylindrical member and the inner tube are received by the discharge boat of the outer container.
To explain with reference to i, the foam dispensing device 10 of the present invention is! an outer container 12 with a 1Is 14 for constant IP output &-);
) has a form generation unit 16 that separates the S* region from the inside of the test@12.

Container 12 provides a reservoir for the foam corrugation and may be formed of any suitable rigid or non-rigid material, such as metal or plastic. The form generating unit 16 includes a cylindrical member 1- made of rigid plastic or the like, which constitutes an internal auxiliary container disposed within the outer container 12, and a closed cup 2o. The open-chain beetle 20 has a penetrating portion 22 , a lower annular cylinder 24 , and an outer portion 26 , and a through passage 28 that constitutes a pressurized air inlet into the cylindrical member 18 . and a through passage 50 constituting a 7 ohm outlet from the cylindrical member 1B. In the illustrated embodiment, the pressurized air is transferred to the passage 2 by, for example, the connecting pipe member s4.
The pulp 52 marked 8** is supplied to the air introduction passage 28.

As shown in 1iii, the pulp 32 is equipped with a one-way valve, for example constituted by a diaphragm 54 with an air passage ssrtM. Other means of pressurized air generation, such as a foot pump, may be used instead of pulp.

The foam discharge passage 50 has a tubular member 40 attached to its upper end which serves as an extension passage.As shown in FIG. The program generation means 420 also serves as a dispersion means.

In the illustrated embodiment, the 7-ohm generation means 42 is a U.S. Pat. It is similar to the one shown in No. i7, and has many air holes in the fabric.

It is provided with a hollow member 44 that is lowered. Hollow member 4
4 constitutes a 7 ome generation mixing unit. An elongated tubular member 48 defining an inwardly projecting conduit is connected to the hollow member 44 at its upper end. The tubular member 4B has a gate 50 at the lower end. The air holes 46 are for introducing air into the mixing chamber constituted by the member 44 at the same time as the tubular member 48 is introduced into the mixing chamber and the foamable corrugated body is introduced. The total flow cross-sectional area of the air holes 46 limits the free flow of air through the air holes 46 in order to allow the foaming liquid to be forced up through the tubular member 48 into the mixing chamber by the air pressure acting on its upper surface. It is determined that Air and foaming liquid are simultaneously introduced into the mixing chamber to mix the air with the liquid and produce 7 ohms.

In the illustrated example, a royal stop valve 52 is installed within the reduced diameter portion of the hollow member 440 to prevent 7 ohms from returning into the tubular member 48.
is seated. The passage 5o is shaped so as to constitute a section for the 7-ohm homogenizing overlay member 54. Overlay member 54 is held in place by hold down cylinder 54 . If desired, other types of 7-ohm generation means may be used, such as those illustrated in US Pat. No. 5,977,564.

In the illustrated embodiment, the tubular member 18 is integrally formed with the closing cup 20, and the inner end of the tubular portion 180 has an inner cup 62 having an end opening 64 that communicates with the outer volume 11t2. It is provided. A one-way valve made of a flexible member 64, such as rubber, is provided to cover the entrance 64 and is held in place by an end S middle jack 62. The one-way valve, ie, the check valve, is made by pressing the pulp 52f.
When the pressure in 118 is increased, it is closed as shown at 111WJ, forcing the flexible member 66 of the check valve against the gate 64, forcing the liquid reservoir in the inner container 18 down, and causing its swelling The foamable liquid is supplied to the foam generating means 42 through the tubular member 4B. When the air pressure in the inner container 18 is released, the valve is closed by being pushed up from the entrance 64 as shown at $1411, and the inner container is removed from the outer container @12! ! Of course, a ball valve or other type of one-way valve may be used in place of the flexible member 660, if desired, to allow the flow of foaming liquid into #18.

When the 7-ohm generating means 16 is first inserted into the outer container 12 in which the foam wave body has been harvested, the flexible member 66 is opened and the difference in the liquid level between the inner and outer containers is created. The pressure difference caused by this causes liquid to flow into the inner container 18 . When the 7 ohm generating unit 16 is fully inserted, the liquid levels in the inner and outer containers are equal in height. Thus, by applying pressure to the top of the liquid in the inner container 18 and lowering the liquid level as indicated by Ll at 111[, 7 ohms are produced and discharged from the outer end of the tubular member 40. When the pressure is released by releasing the pulp s2, the liquid flows into the inner container through the gate 64. This inflow is assisted by the creation of a relative negative pressure within the volume 1116. The use of a valved interior volume W, which has a much smaller volume than the outside @ 912, allows air pressure to be applied to a relatively small auxiliary container. It is possible to produce 7 ohms of excellent quality from a large volume of containers by operating the 7 ohms, and the pressure required to produce 7 ohms can be created with a relatively small amount of air, thus making it possible to It offers the advantage of allowing rapid foaming operations with small pneumatic actuation means (Pulp!2). According to the invention, the ratio of the 111 areas of the outer container to the inner container is 50:1 to 100:
1 (based on the diameter of the inner container of 11 m), good results were obtained.

[Brief explanation of the drawing]

No. 1 w is a vertical # side view of the device of the present invention, No. 112 is a plan view of No. # taken along 92-2 of No. Nl, and No. 51 is an I
Cross-sectional view along IIAs-s, 11141! FIG. 1 is a partially enlarged plan view showing the valve operation. 10: Foam dispensing device 12; Outer container 16: Foam generating unit 18: Chain member (inner container) 20: Closing cap S2: Pulp 42; Foam generating means 44: Hollow member (mixing chamber) 46: Air hole 48: Tubular member 52: Check valve 62: Middle pipe 44: 11 port 66: One-way valve

Claims (1)

[Scope of Claims] 1) An outer container for accommodating a foamable casing having a #111 outlet port and a region adjacent to the #111 outlet port and the interior of the container. a foam dispensing device comprising a separate foam generating unit, the foam generating unit being arranged within an outer vessel and having an opening in communication with the outer vessel; an inner vessel having pressurized air introduction means and a 7 ohm #; It is equipped with a locking member for the inner container having an exit means, and a foam generating means communicating with the foam exiting means, and the foam generating means is arranged in the interior of the inner container. Inwardly with an opening communicating with ll! a venting conduit and valve means for opening the inner container, both valve means opening the inner container when the air pressure in the inner vertex is increased. - supplying an effervescent corrugated body from the inner container to the conduit of said foam generating means, said valve means causing the valve means to close the valve opening from the outer container to the inner container when the air pressure in the inner container is reduced; A foam dispensing device that allows foaming liquid to flow into the foam dispenser. 2) Claim 111, wherein the valve means includes a flexible member that selectively opens and closes the opening of the inner container.
11j 7 ohm dispensing device. 5) The foam dispensing device according to claim 1, further comprising means for supplying pressurized air to the air introduction means. 4) A 7 ohm dispensing device according to claim 11111, wherein the closure member includes an inner tube having a through-way constituting the air introduction means. 5) The foam dispensing device according to claim 1, wherein the inner container includes a cylindrical member integrally formed with the inner container. 6) The inner container has an inner end, and
Claim 114 in which the mouth is exposed to the end tIl
Foam dispensing device for the war. 7) The integrally formed cylindrical SW and middle tube are as follows:
The foam dispensing device according to item 11115, which is received by the outer m** discharge boat; 7. A 7 ohm dispensing device according to claim 1, including an inwardly extending tubular member.