JPS5892331A - Apparatus for successively forming soap bubbles - Google Patents

Abstract

1. A device for the portional formation of soap lather comprising of a storage container (V) for an aqueous soap solution, a soap solution metering pump (3) and a compressed air diaphragm pump (9) which are actuatable by a single lever, the pump having a diaphragm piston (14) and return spring (12), and a mixing chamber (8) for the formation of lather, characterized in that the compressed air diaphragm pump (9) is constructed so as to be double-acting (figure).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention consists of a storage container for a moist soap solution, which storage container is connected to a diaphragm piston and a respective soap solution dispensing pump actuatable by a single lever. The present invention relates to a device for sequentially forming soap lather, having a compressed air diaphragm pump with a spring and a mixing chamber for forming the lather.

Soap dispensers are known to be used in public and private washrooms in numerous implementations. Among other things, foam-forming soap distributors are known, which contain dichlorodifluoromethane (Freon 12
), the use of which has had to be severely restricted for reasons of environmental protection.

Furthermore, a device for dispensing and forming soap suds according to the generic concept of claim 1 is known (EPA-AI
-0019582), this device has a single lever for simultaneously driving the piston of the soap solution dispensing pump and the diaphragm pump for generating compressed air. Compressed air is injected through the perforated wall of the conduit into a metered amount of soap solution present in the mixing chamber, thereby producing honeycomb-like soap bubbles, which continue to become porous. It blows through the body, becoming equalized and condensed.

In fact, this solution has proven to be very economical in terms of soap usage. Instead, when the device was not used for a long time, the soap suds dried in the area of its outlet opening, which resulted in a functional impediment to its operation.

It is therefore an object of the present invention to create a device for the sequential formation of soap lather, which can perform its function immediately even after a relatively long period of non-use.

This problem is solved by the features recited in claim 1.

The dependent claims indicate advantageous developments of this solution.

The valve arrangement according to claim 3, in which the device according to claim 2 produces a percussive ejection of the soap foam portion, and is therefore characterized by occlusion and/or dripping after actuation of the device, is particularly advantageous. It turned out to be a good purpose.

The reliability of operation of the device and thus its manufacturing quality can be further increased by claim 4 corresponding to the valve.

The development of a double-acting piston in a compressed air diaphragm pump according to claim 4.5 has a valve with high air efficiency despite a small mounting mass and high operability.

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

In the drawing, G indicates the nozzle of the soap dispenser. Above the no-using G is placed a storage container V--symbolized by an arrow--filled with a moist soap solution. A base 67 extends into the housing G and is connected via a lateral supply channel 6 to the cylinder chamber 4 of the soap solution metering pump 3. The soap solution dispensing pump 3 includes:
A piston 2 is provided which has a cylindrical blind bore and an open lower piston outlet. This piston 2 is slidably formed and sealed on one side by an O-ring 52. A bearing pin (not shown) is inserted through the end of the piston 2 protruding from the cylinder chamber 4, and this bearing pin is inserted into the drive bracket 1a at both ends in a force-restricted manner. The cylinder chamber 4 is connected to a mixing chamber 8 via a lower connection amount. In the lower part of the mixing chamber 8 a nose-shaped end of the conduit 18 projects, through which a compressed air stream enters via the compressed air line 5 and into the hole 19. can go out through.

Compressed air is generated in the diaphragm pump 9 by operating the lever 1 using the operating force F. The cylinder 13 of this diaphragm pump 9 has a concave portion 14C and a
It has a rubber diaphragm 14a guided by 4d, which diaphragm forms a double-acting diaphragm piston 14. This diaphragm holding member is screwed by 59. A return spring 12 is arranged around the piston rod 14b and the diaphragm piston 1
4 and the operating member connected thereto are pressed to the upper position shown.

The diaphragm piston 14 advances by a stroke H (downwards) and then the air mass 56 and the flap valve 55
Air is sucked into the cylinder 15 through.

The flap valve 55 is made of rubber and has a retaining member 5 on one side.
7 is fixed to the lid of the cylinder 13.

At the same time, the valve 70 present on the left side of the leg of the diaphragm pump 9 closes. The air chamber present below the diaphragm 14a is compressed and flows into the compressed air line 5 via another valve 70 on the right side of the piston rod 141).

Then, when the lever 1 is no longer pressed, ie when the actuating force F ceases to be applied, the diaphragm piston 14jf moves relatively quickly under the influence of the return spring 12 into the position shown above. At this time, the flap valve 55 is closed to generate compressed air in the cylinder head, and this compressed air acts on another valve 70 disposed in the connecting passage through the compressed air line 5a, and this compressed air acts on another valve 70 disposed in the connecting passage. Open conduit 5
a into the upper part of the outlet opening A and blows out almost all the soap suds present there.

In the rest position shown, the cylinder chamber 4 is filled with soap solution substantially up to the small dead space 15 delimited by the bag chamber 16 with the connecting hole 16'.

However, when the operating lever 1 is pressed, the slidable piston 2 moves to the end of the cylinder chamber 4, and the air then present in the dead space 15 and the bag chamber 16 creates an air cushion 17, which Otherwise, the soap solution is now under pressure, and this soap solution flows into the mixing chamber 8 at the end position of the piston 2 via the piston outlet opening lower opening 7 and the now open flap valve 54. Pressed by

Now, the compressed air passes through the compressed air line 5, the line 18, as described above, and flows into the mixing chamber 8 through the holes 19, where it forms coarse bubbles, and these bubbles form the porous body 2'.
020, is pressed through a so-called frit, equalized and ejected via a subsequent expansion chamber 21 in a foam deflector 22 and finally through an outlet opening A.

Here, fine walnut-sized soap suds can be used for purifying purposes.

In this device, the axes 10 and 11 of the pistons 2 and 14 are perpendicular to each other. The force transmission of the lever 1 carried out by the two arms takes place via the bearing pin to the drive bracket 1a or to the piston rod 14b. Hauchi valve 54
is a partially rotating core holding member 5 made of synthetic rubber.
Centered on the veranda by 8.

, the compressed air line y'5a, shown in dotted lines in the drawing, is guided in a circular manner around the threaded plug 68. This screw 68 connects the housing.

A foam deflector 22, a porous body 20, and a mixing chamber 8, which are centrally arranged in the groove G, are fixed.

The valve 70 has a valve bushing 73 and a valve seat 72 made of formaldehyde polymerizate (Dθ1rin), which is a commercially available polymer, and a cylindrical valve body 71 which is also made with commercially available dimensions. is effective.

The object of the invention is extremely versatile and represents an advance in lavatory hygiene, particularly due to its continued ease of use and easily reproducible operation.

[Brief explanation of the drawing]

The drawing shows a cross-sectional view of a preferred embodiment of a soap distributor developed with respect to that mentioned at the outset. Storage container 1 Lever 3 Soap solution dispensing pump 8・Mixing chamber 9...Compressed air diaphragm pump 12...Return spring 14...Diaphragm piston

Claims (5)

[Claims] (1) a storage container (V) for a moist soap solution, which storage container is equipped with a soap solution dispensing pump (3) and a diaphragm piston (14) each operable by a single lever; In an apparatus for sequentially forming soap foam, the compressed air diaphragm pump (9) has a compressed air diaphragm pump (9') with a return spring (12) and a mixing chamber (8) for forming the foam. A device characterized in that it is configured to double-act. (2) the direction of action of the compressed z-air diaphragm pump (9) towards the piston rond (14b) is given for compressing and introducing compressed air (D) into the mixing chamber (8); 2. The device according to claim 1, wherein the direction of action of is provided for blowing soap suds out of the outlet opening (A). (3) The compressed air supply line and the discharge line of the diaphragm pump (9) each have one valve (70) on the side of its piston rond (14b), the supply line (5a) for blowing out the soap suds. 3. The device according to claim 2, wherein a further valve (70) is provided. (4) The valve (70) has a cylindrical valve body (71) which, in its rest position, abuts its sealing surface (72) by gravity. equipment. (5) The diaphragm piston (14) consists of two parts (14C914d), the concave surfaces of these parts face opposite to the piston rond (14b), and the diaphragm piston (14C114d) is arranged between the two parts (14C114d). (14a) Apparatus according to any one of the claims 1 to 4, wherein: (14a) is tightened.