HU214724B - Sprinkler being on spraying tank for emitting foam - Google Patents

Abstract

Nozzle for spray tank for dispensing foam, in which the spray tank has a manually operated dispensing valve arranged in the nozzle outlet channel (6) and the nozzle has a shut-off valve (3a) for automatically closing the outlet flap (6) and the discharge. ; moreover, the closing element (3a) is formed in the shape of a spout, its body (3a) is introduced axially into the outlet channel (6), and in its closed position the flange (16) of its spout (17) to the outlet (18) of the spout (6) 13a) is arranged to fit the shoulder (15a) of the outlet chute (6) .According to the invention, the radial belt (14a) is formed at the periphery with a main groove and the shoulder (15a) of the outlet chute (6) ) is broken, and at least the plunger head (17) is made of a resiliently flexible material.

Description

EXTRACT

Spray nozzle for dispensing a foam having a manually actuated dispensing valve in the dispensing nozzle outlet (6), and a nozzle (6a) automatically closing the outlet nozzle (6a) and the discharge valve (3a) is installed between; furthermore, the closure member (3a) is formed in the form of a mushroom, its body (13a) is inserted axially into the outlet channel (6) and in its closed position the rim (16) of the mushroom head (17) to the outlet opening (18) The radial belt portion (14a) (13a) is disposed in a manner adapted to the shoulder portion (15a) of the outlet (6). According to the invention, the radial belt portion (14a) is continuously formed along the circumference, and the shoulder portion (15a) of the outlet channel (6) is interrupted by channels (19a) and at least the mushroom head (17) is made of elastically flexible material.

Figure 3

HU 214 724 B

The length of the description is 6 pages (including 2 pages)

HU 214 724 Β

FIELD OF THE INVENTION The present invention relates to a spray nozzle for dispensing a foam, wherein the spray nozzle is provided with a manually actuated discharge valve in the nozzle outlet, and the nozzle is automatically shut off the discharge nozzle and the discharge valve is technically in between furthermore, the closure member is formed in the form of a fungus, its torso is introduced axially into the outlet duct, and in its closed position the edge of the fungus head is disposed on the outlet opening of the outlet channel and the radial waistband of the body.

Such a nozzle is known from US-A-44 37 592. In this case, the closure opens before the outlet valve and hermetically closes after it is closed. When venting foam from a spray tank, it is important that the aerosol product stored in the spray tank in a liquid state, when opening the discharge valve, does not exit without braking but is foamed as quickly as possible. However, if the closure opens before the dispensing valve, at least a portion of the aerosol fluid is discharged before full foaming occurs. It is also important that the foam exits when braked, since experience has shown that the foam that exits braked harder (more durable). Further, if the closure is hermetically sealed, the product remaining in the space between the outlet valve and the outlet may foam in the sealed outlet, and optionally the closure may reopen under pressure of the foam, whereupon further foam may flow out.

It is an object of the present invention to further improve the nozzle as defined in the introduction so that the exit foam is harder and no further outflow of foam can occur after the closure is sealed.

A solution to the problem is to provide a nozzle for a dispensing nozzle having a manually actuated dispensing valve in the nozzle outlet, the nozzle having an automatically closing closure for the outlet, and the dispensing valve being inlet and outflow means; furthermore, the closure member is formed in the form of a fungus, its torso is introduced axially into the outlet channel and, in its closed position, the edge of the fungus head is aligned with the outlet opening of the outlet channel and the radial belt portion of the body; wherein, in accordance with the present invention, the radial waistband is continuously circumferentially formed and the outlet shoulder portion of the outlet channel is interrupted by channels and at least the mushroom head is made of an elastically flexible material.

In this solution, the delayed opening closure first acts as a retardant to the foam exit, thereby increasing the foam's strength (durability). In contrast, non-hermetic closure, i.e. providing additional gas exit, eliminates post-foaming and unwanted exit of the foam after closure. The edge of the mushroom head is inclined outwardly with respect to the pressure of the foam relative to the opening of the dispensing valve and allows the foam to exit, away from the edge of the outlet of the outlet. After the outlet valve is closed, the mushroom head flange returns to the closed position due to the resilience of its material, as the foam pressure decreases.

Preferably, the outlet channel is divided into a first section and a similar second section comprising the closure member. In this case, the first section may be formed by its standard outlet, into which the second section of the desired design can be easily inserted.

The invention will now be described with reference to an exemplary embodiment.

The

Fig. 1 is an axial sectional view of a nozzle, when closed, not representing a claimed embodiment, but illustrating the construction and operation of the exemplary embodiment of Figs. 3 and 4; the

Figure 2 shows the nozzle of Figure 1 in an open position; the

Fig. 3 is an axial sectional view of an actuator according to an exemplary embodiment of the nozzle of the present invention and an associated closure member, in an exploded view; and the

Fig. 4 is an axial sectional view of the actuator of Fig. 3 and the locking member inserted when closed.

1-2. The spray nozzle of Figures 1 to 4 is provided with an actuator head 1 (not shown) for dispensing a dispensing container for a dispensing container. The actuator 1 has a fungus-shaped closure 2 in which a fungus-shaped closure 3 is snapped. The nozzle shown is further provided with a protective cap 4.

The actuator 1 is provided with a vertical outlet pipe 5 which forms the first section of the outlet channel 6. The closure 2 has a nipple 7 inserted into the outlet 5. The nozzle 7 forms the second section of its outlet 6. The outlet pipe 5 and the pipe nozzle 7 are tightly clamped together by frictional joints. The lower section of the outlet pipe 5 is formed in the axial direction by a socket 8 for receiving the outlet end of the outlet valve outlet pipe. The outlet duct 6 is partially closed by a transverse stop wall 9. The aerosol liquid discharged from the spray tank foams on the baffle 9.

The upper wall 10 of the actuator 1 is formed on only one side (left hand side of Fig. 1) of the actuator 5 and is integrally formed with the outer side wall 11 of the actuator 1 which can be snapped onto the upper rim of the spray tank. The wall 10 is made of flexible material. In this way, by pressing the actuating shoulder 12 which is diametrically opposed to the transition between the walls 10,11, pressure is exerted on the outlet pipe of the discharge valve which fits into the socket 8. Open the discharge valve by pressing the outlet pipe which forms the shut-off valve of the discharge valve

The closure 3 is approximately mushroom shaped and its body 13 is inserted axially into the outlet duct 6. The body 13 is provided with a radial belt portion 14 formed as a circumferential collar, which is also secured under the shoulder portion 15 formed as a circumferential collar in the outlet channel 6. In the closed state shown in Fig. 1, the edge 16 of the mushroom head 17 of the closure 3 is the mold 6

EN 214 724 Β fits to the 18 flanges of the outlet opening. The radial waistband portion 14, when closed, is axially spaced d from the shoulder portion 15. This distance d defines or limits the stroke length of the rigid member 3. The radial waist portion 14 is provided with axially extending passageways 19 to the upper side of the shoulder portion 15. The mushroom head 17 of the closure 3 is inserted into a recess 20 formed in the fungus-like portion of the closure.

When opening the outlet valve by pressing the actuating shoulder 12, the fluid in the reservoir, under pressure of the propellant, flows through the outlet valve and its outlet tube to the baffle wall 9, where it is foamed upon impact. The resulting foam enters the outlet 5 and then the outlet 7. Here, the locking member 3 in the closed position of FIG. The pressure of the foam overcomes the force of gravity on the closure, so that the closure 3 gradually moves to the open position of FIG. The closure 3 retards the exit of the foam. The foam will be harder as a result of the braked exit.

As soon as the actuating shoulder 12 is released, the outlet valve closes immediately, but the closure 3 remains open as it is raised by the foam pressure.

If the spray canister is held vertically, so that the outlet port 6 is in a vertical position, the closure member 3 will gradually lower into the closed position as the foam pressure decreases. However, it is also possible to manually push the closure back into the locking position while wiping out the foam. In the closed position, gas can escape through the non-hermetic sealing gap between the closure member 3 and the closure member 2, while the foam and fluid formed in the outlet port 6 are retained by the closure member 3 and at the same time prevent the product remaining in the outlet port as a result.

Figures 3-4. Figures 1 to 8 show another sealing solution 2a for use with the actuator 1. The closure member 3a, which is also a mushroom head, is not rigid but is made of an elastically flexible material. The through channels 19a are formed not on the body 13a, but in a conically widening portion of the nipple 7a. Accordingly, the radial portion 14a of the body 13a is formed continuously along the circumference, while the shoulder portion 15a is interrupted by the passageways 19a along the circumference. There is no axial clearance between the waist portion 14a and the shoulder portion 15a, i.e., the waist portion 14a is permanently resting on the shoulder portion 15a.

When the outlet valve is opened, the entire closure 3a does not rise, only its rim 16 is inclined axially upwards under the pressure of the foam. The closure member 3a is thus retarded in the opening position (not shown). After the outlet valve is closed, the flange 16 gradually rests on the flange 18, as the flap 3a, due to the elasticity of the foam, regains its original shape and returns to its closed position. The opening and closing of the closure 3a is thus again delayed compared to the opening and closing of the discharge valve.

Polygonal (e.g. rectangular) closures may be used in place of the circular closures shown in the top view where no structural changes other than the shape of the actuator head are required.

Claims (2)

PATENT CLAIMS A spray nozzle for dispensing foam having a manually actuated dispensing valve in the dispensing nozzle outlet (6) and a nozzle (6a) automatically closing the outlet nozzle (6a) and the discharge valve flow valve 3a) is inserted between; furthermore, the closure member (3a) is formed in the form of a mushroom, its body (13a) is inserted axially into the outlet channel (6) and in its closed position the rim (16) of the mushroom head (17) to the outlet opening (18) of the outlet channel (6) The radial belt portion (13a) being disposed in a circumferential manner and the shoulder portion (15a) of the outlet channel (6) circumferentially interrupted by channels (19a) and at least the mushroom head (17) is made of an elastically flexible material. Nozzle according to Claim 1, characterized in that the outlet (6) is divided into a first section (5) and thereby an interlocking second section (7a) comprising the closure (3a). HU 214 724 Β Int Cl ⁶ : B 65 D 83/28 Figure 1 HU 214 724 Β