EP1296881B1 - Adapter for a manually operated dispensing device for a liquid container - Google Patents

Abstract

The invention relates to an adapter ( 2 ) for a manually operated dispensing device ( 120 ) for a fluid that is/can be pressurized in a container. The dispensing device includes a housing ( 148 ) having a passage channel ( 30 ). A tubular adapter housing ( 34 ) connects the uptake tube ( 32 ) and the channel ( 30 ) of the housing ( 148 ) of the dispensing device ( 120 ). The adapter housing ( 34 ) has a connecting sleeve ( 42 ) for connection to the connecting nipple of the housing ( 148 ) and an uptake tube sleeve ( 44 ) for connection to the uptake tube ( 32 ). There are several inlets ( 46 ) for the fluid in the upside down position of the dispensing device. The adapter housing ( 34 ) defines at least one section of the inlets. An inlet valve ( 48 ) is defined within the adapter housing ( 34 ) for releasing the inlets substantially simultaneously when a pressure acts on the fluid in the container in the substantially upside down position of the container. A shut-off valve ( 50 ) is positioned inside a large diameter valve chamber ( 52 ) of the adapter housing ( 34 ), in such a way that the valve ( 50 ) can be freely displaced axially between two end positions.

Description

The invention relates to an adapter for a hand-operated Dispensing device of a pressurized / settable fluid in a container in its substantially upright position and in its substantially inverted or overhead position according to the preamble of claim 1.

They are dispensers in the form of hand-operated pumps for liquid containers or dispensing valves for under Pressure of propellant gas standing liquid containers known which an auxiliary valve for the inlet of liquid from a container is assigned, which is an oblique or substantially reverse or overhead position (see, e.g., U.S. Patent No. 4,775,079). The auxiliary valve is made in these known devices from a ball valve, that the pump housing or valve housing of the relevant dispensing device assigned. The ball valve is between an open position and closed position axially parallel to the associated Container freely movable in a valve chamber stored. It is subject to gravity only, so that the ball valve in dependence on the inclination of the container and the viscosity of the container liquid more or Less quickly - or not at all - takes its final position. This leads u.a. to a non-uniform delivery of the container liquid due to a different air addition and is perceived by the consumer as disadvantageous. This Disadvantage especially affects cosmetic or pharmaceutical Products in which the consumer is on the Delivery of a certain amount of the product at the time of actuation leaves such dispensing packages.

The invention is therefore based on the object, an adapter to propose, in conjunction with usual hand-operated Pumps or dispensing valves to under the pressure of propellant gas Containers can be used optionally and above in addition, in each, from the normal, upright position of a Container deviating position thereof, such as an overhead or Slope of the container, the delivery of a consistent Liquid quantity guaranteed. Each, only for one operation and function in the upright position of the container Dispensing device should by using the adapter according to the Invention also for an actuation and delivery of the container liquid used in the reverse or overhead position of the container can be.

The invention solves this problem by the recited in claim 1 Characteristics. The dependent claims contain advantageous Further developments of the invention.

By the adapter according to the invention it is achieved that each for the delivery of liquid in the normal, upright position a dispensing device provided by a container by applying the Adapter to the lower end of the housing of the relevant dispensing device in a universal dispenser can be converted and used in any Location of the container always a constant discharge Releases fluid reliably.

Fig. 1

eine Ausführungsform eines Adapters gemäß der Erfindung in Verbindung mit einer bekannten, handbetätigten Pumpe in einem Mittellängsschnitt;

Fig. 2

eine abgeänderte Ausführungsform eines Adapters in Verbindung mit der in Fig. 1 gezeigten Handpumpe, in einem Mittellängsschnitt;

Fig. 3

eine Modifikation des Adapters in Fig. 2 in größerem Maßstab, mit weitgehend weggebrochener Pumpe;

Fig. 4

eine weitere Modifikation des Adapters in Fig. 3, in einem Mittellängsschnitt vergrößerten Maßstabs;

Fig. 5

eine weitere Modifikation des Adapters in Fig. 3, in einem Mittellängsschnitt vergrößerten Maßstabs;

Fig. 6

eine weitere Modifikation des Adapters in Fig. 3, in einem Mittellängsschnitt vergrößerten Maßstabs;

Fig. 7

eine weitere Ausführungsform eines Adapters gemäß der Erfindung, in einem Mittellängsschnitt;

Fig. 8

eine weitere Ausführungsform eines Adapters gemäß der Erfindung, der mit einem Gehäuse der Abgabevorrichtung einheitlich geformt ist, in einem Mittellängsschnitt;

Fig. 9

eine Modifikation des Adapters in Fig. 8 in einem Mittellängsschnitt;

Fig. 10

ein Sperrventil des Adapters in Fig. 9, in einer um 90° gedrehten Ansicht, in vergrößertem Maßstab;

Fig. 11

eine weitere Modifikation des Adapters in Fig. 8, in einem Mittellängsschnitt;

Fig. 12

eine weitere Modifikation des Adapters in Fig. 8, in einem Mittellängsschnitt; und

Fig. 13

eine weitere Modifikation des Adapters in Fig. 8, in einem Mittellängsschnitt.

The invention is described below with reference to the schematic drawing of several embodiments. Show it:

Fig. 1

an embodiment of an adapter according to the invention in connection with a known, hand-operated pump in a central longitudinal section;

Fig. 2

a modified embodiment of an adapter in conjunction with the hand pump shown in Figure 1, in a central longitudinal section.

Fig. 3

a modification of the adapter in Figure 2 on a larger scale, with largely broken pump.

Fig. 4

a further modification of the adapter in Figure 3, in a central longitudinal section of enlarged scale.

Fig. 5

a further modification of the adapter in Figure 3, in a central longitudinal section of enlarged scale.

Fig. 6

a further modification of the adapter in Figure 3, in a central longitudinal section of enlarged scale.

Fig. 7

a further embodiment of an adapter according to the invention, in a central longitudinal section;

Fig. 8

a further embodiment of an adapter according to the invention, which is uniformly formed with a housing of the dispenser, in a central longitudinal section;

Fig. 9

a modification of the adapter in Figure 8 in a central longitudinal section.

Fig. 10

a check valve of the adapter in Figure 9, in a rotated by 90 ° view, on an enlarged scale.

Fig. 11

a further modification of the adapter in Figure 8, in a central longitudinal section.

Fig. 12

a further modification of the adapter in Figure 8, in a central longitudinal section. and

Fig. 13

a further modification of the adapter in Fig. 8, in a central longitudinal section.

In Fig. 1, an adapter 20 for a hand-operated pump 120th as a dispenser 22 of a pressurized or settable Fluids in a container, not shown in its in essentially upright position and in its substantially reverse position or overhead position shown.

The dispenser 22 comprises a housing 148 which, as at known and therefore not shown, on an opening on The upper end of the container is tightly fastened. The housing 148 is provided with a bottom 26, at its lower end a Connection nipple 130 is arranged. A passageway 30 extends through the bottom 26 and the nipple 130 and represents the passage of the fluid in the substantially vertical Location of the container with one in the fluid in the container extending riser 32 in conjunction.

A tubular, substantially cylindrical adapter housing 34 includes a connecting channel 36 between the riser 32nd and the passageway 30 of the housing 148 of the dispenser 22. The adapter housing 34 has an upper end 38 and a lower end 40, each having a connecting piece 42 for the Connecting nipple 130 and a riser nipple 44 for the riser 32 form. There are a plurality of inlets 46 for the fluid in the Wall of the adapter housing 34 is provided, which in the same circumferential angular distances at about the middle height of the adapter housing 34 are arranged. These inlets 46 allow passage container liquid in the substantially inverted position the container, as explained in more detail below.

In the embodiments of the adapter 20 according to the invention in 1 to 7 is an intake valve 48 as an independent or separate component in the adapter housing 34 axially immovable used.

The inlet valve 48 is within the adapter housing 34 for the about simultaneous closure of the inlets 46 in the approximately upright Location of the container, but for about the same time Release of the inlets 46 in response to the fluid in the container impacting pressure difference in the substantially inverted Location of the container provided.

A check valve 50 is within a valve chamber 52 of the adapter housing 34 axially freely movable between two end positions. In this case, in the upright position of the container, the upper End position by a transversely through the adapter housing 34 extending Lock valve seat 54 and the lower layer by a Support device 56 defines on which the check valve 50th a throttle position for the fluid, leaving throttle openings 58 occupies. The valve chamber 52 has a diameter, the greater than the diameter of the check valve 50 dimensioned is to in the upright position of the container flow channels 60th for the fluid to form.

The inlet valve 48 is made of a flexurally elastic material, such as Silicon or polyethylene, made and consists of a Valve sleeve 62 with a sleeve bottom 64 and is within the Adapter housing 34 at a distance below the inlets 46 by supported the support device 56. The inlets 46 are made several, at the same height and at the same circumferential angle intervals provided inlet openings 66 in the cylindrical wall 68 of the adapter housing 34. The inlet openings 66 are in the upright position of the container through the flexible valve sleeve 62nd sealed, but at a negative pressure in the adapter housing 34th relative to the pressure prevailing in the container by a radial inwardly directed bulge of the valve sleeve 62 is opened.

The support device 56 consists of at least three, in the same Circumferential angular spacings arranged support ribs 70, extending from the inner wall of the valve chamber 52 radially inwardly and from lower end 40 of the adapter housing 34 extend upward and at the distance below the inlet openings 66 end. The valve sleeve 62 is with its sleeve bottom 64 on the upper ends of the Support ribs 70 supported. The support ribs 70 serve simultaneously for guiding the coaxially movable shut-off valve 50 in the Valve chamber 52. Interstices, in the circumferential direction of the inner wall the adapter housing 34 between the support ribs 70th are arranged, form the flow channels 60, through which the Fluid at the check valve 50 in the direction of the dispenser 22nd can flow past.

The lower end 40 of the adapter housing 34 has a tapered Length section 74, the lower end of the riser nipple 44 smaller diameter has. Here are the extend Support ribs 70 to the tapered length portion 74 and Stand there radially inward to the throttle seat for the Shutoff valve 50 to form. As a result, during the first pump stroke in upright position of the container contained in the housing 148 air the check valve 50 passing through the throttle seat of the same in the Container to be pressed. The support ribs 70 increase diametrically Valve chamber 52 at a distance from each other, the clear Diameter of the riser nipple 44 corresponds to and less than the diameter of the check valve 50 is dimensioned to carry ribs 57 for the check valve 50 to form.

The riser 32 has an upper end 72, the gabled roof of its center bevelled on both sides at an angle of 90 ° is. This type of riser end 72 offers the possibility to the support device 56 for the check valve 50 to dispense and instead the spherical check valve 50 only on the gable roof-like end 72 of the riser 32, because even in this case, the sides of the two opposite each other Tips of riser end 72 throttle openings for the drainage of product residues when pressurizing the pump 120 available.

Although the adapter according to the invention, as stated at the outset, can be used in any pressure or pumping systems, the mode of operation of the adapter is described below with reference to the in Figs. 1 and 2 shown, known metering pump 120 will be explained.

Figs. 1 and 2 show a known metering pump 120 as a dispenser. The pump is mounted in a cap 122, the appropriate means, e.g. a screw thread 124 for Attachment of the cap together with the pump arranged therein 120 on the open top of a conventional container.

The container (not visible under the pump 120) is with a filled with liquid product. The liquid product is in the Pump 120 sucked through the connection nipple 130, with the Bottom of the pump 120 is connected. The adapter 20 is how already described above, with its upper, tubular end 38 attached to the nipple 130 and takes in its lower Riser nipple 44, the upper end of the riser 32, which extends to the bottom of the container. The lower end of the riser 32 is therefore normally in the liquid submerged when an associated container is in the generally upright position.

The cap 122 has a generally cylindrical hollow wall 131, with an inner cylindrical opening 132 above and separated from the screw thread 124, from an annular flange 134 which protrudes inward. Within the Opening 132 is a holder 138 which has an outer wall 140 has, which at its lower end an outwardly projecting Ring flange 142 forms. The annular flange 142 is with respect to the top of the container opening fixed and sealed. The holder 138 serves to secure the pump 120 in the Cap 122. For this purpose, the pump housing 148 with a provided upper flange 150, which projects outward. The flange 150 has a radially inwardly projecting shoulder on the outer wall 140 of the holder 138. The holder 138 may be for attachment the pump housing 148 easily with a snap fit on the Pump housing 148 attached and connected to this.

The pump housing 148 comprises a substantially cylindrical Pump chamber 180, which is open at the top and in the one cylindrical inner sleeve 172 of the holder 138 engages. The inner sleeve 172 is disposed coaxially with the outer wall 140 of the holder 138 and with the latter at the top by an annular End wall 164 connected. The inner sleeve 172 terminates in a tapered lower end 173 within the pumping chamber 180.

The flange 150 at the upper end of the pump housing 148 is with a vertical groove 162 provided in the right half of Fig. 1 and 2 is shown. The groove 162 forms an air outlet slot between the pump housing 148 and the outer wall 140 of the holder 138 and acts with certain ventilation channels in the holder 138 together. In particular, the upper annular forms End wall 164 has a circumferential groove 168 at the top of the Holder 138. The groove 168 is connected to the top of the groove 162, as shown in the right half of Figs. 1 and 2. In a 180 ° offset from the groove 162 position the groove 168 is connected to a radial groove 170 (FIG provided in the bottom of the upper end wall 164 of the holder 138 is. The groove 170 extends inwardly over the wall the pump housing 148 addition.

The cylindrical inner sleeve 172 of the holder 138 is provided with a plurality Ribs 174 are connected at a distance from each other over the circumference are distributed and protrude outward. The vertical outer surfaces of the ribs 174 lie against the inner wall of the Pump housing 148 and serve for coaxial alignment of the Holder 138 and pump housing 148.

The entire circumference of the upper inner edge of the pump housing 148th is conically flared to a ring channel 171 to the holder 138th at the upper ends of the ribs 174 to form. The gaps between the ribs 174 connect an annular space 177 below the Ribs 174 at the lower end of the cylindrical inner sleeve 172nd of the holder 138 with the annular channel 171, which is around the upper Ends of the ribs 174 extends. This results in a venting channel resulting from the interior of the pump housing 148 out through the radial groove 170, around the circumferential groove 168 around Groove 162 beyond the shoulder 156 and then down between the cylindrical outer wall 140 of the holder 138 and the Pump housing 148 in the inner headspace of the container above the liquid extends. This venting channel allows along with other pump components that atmospheric Air can enter the container as below is described.

A pump piston 182 is arranged to be sealed in the pump chamber 180 is movable back and forth. The pump piston 182 is provided with a hollow cylindrical shaft 186, the extends upward and out of the pump chamber 180 through the Holder 138 projects beyond the cap 122 to the outside. The cylindrical one Piston shaft 186 is connected to an actuating and dispensing head or knob 190 fitted with a discharge port 192 is provided with the upper end of the piston skirt 186th is connected via a radial outlet channel 194. An axial one Outlet passage 198 extends through the pump piston 182 and its shaft 186 upwards and connects the outlet ports 194th within the actuator head 190 with the pump chamber 180.

The outside of the piston shaft 186 is in the direction of the upper Tapered at the end so that its diameter increases with increasing height above the holder 138 decreases. The lower end of the pump piston 182 forms a concave sealing surface in the direction of the bottom 26 202 (Figure 2) for the side surfaces of the lower end the inner sleeve 172 of the holder 138 to be applied thereto and seal when the pump piston 182 in the fully raised Rest position shown in FIG. 1 and 2 is arranged. If, however, the Pump piston 182 partially or substantially completely is depressed, the concave sealing surface moves away 202 of the pump piston 182 from the lower end of the inner wall 172nd of the holder 138.

As a result, ambient air may enter the container to to replenish the volume of the delivered content and the atmospheric To maintain air pressure within the container. In this case, ambient air flows into the cap opening 132 and also under the actuator head 190.

When the piston shaft 186 is disposed in its lowered position the air flows through an annular gap 123 (FIG. 2) on the cylindrical inner sleeve 172 of the holder 138 and the Pump housing 148 over. The air then flows through the radial Groove 170 and in the circumferential groove 168. Here it is distributed in further directions to the circumference of the holder 138 over about 180 °, where they then through the groove 162 of the pump housing 148th flows. The air then flows between the holder 138 and the Pump housing 148 in the container down.

About the nipple 130 and a suction channel 348 is liquid the pumping chamber 180 through a fixed supply line supplied in the preferred embodiment shown consists of a cylindrical tubular supply member 220, the from the base of the pump housing 148 into the pump chamber 180 in FIG the latter rises and has an open, upper end.

A second differential piston is made up of two parts, namely a valve body 250 and a sealing sleeve 290 (Figure 2). The valve body 250 is axially above the fixed, aligned and also tubular supply part 220 arranged such that it with the pump piston 182 and relative to this above the tubular supply member 220 movable is. The pump piston 182 encloses an enlarged bore, whose upper end in the outlet channel 198 of smaller diameter at a point leading from an annular valve seat 258 is formed. The valve body 250 is at the upper end of a Molded cone, which firmly against the annular valve seat 258 in the pump piston 182 is applied to liquid flowing out of the pump chamber 180 through the outlet channel 198 to prevent.

The lower end of the valve body 250 is a valve head 270 executed. The valve head 270 has an upper piston surface, the is provided with four ribs 274, which are in the same circumference angles extend radially outward and from the upper piston surface looming. The piston surface of the valve head 270 is set under the pressure of the liquid in the pumping chamber 180, as described in detail below.

The underside of the valve head 270 is one in cross-section trapezoidal annular groove and provides an integral part an inlet valve. For this purpose, forms the outer side wall the annular groove has a valve surface 280 which is for sealing the upper conical contact surface 318 of a sealing sleeve 290th is extended conically downwards and outwards, which with the valve body 250 is connected so that they are limited axially adjustable is. The valve face 280 and the conical contact surface 318 form with the middle longitudinal axis 0-0 of the pump downwardly a substantially identical acute-angled Opening. The inner sidewall of the annular groove is of a cylindrical Guide pin 330 formed.

The sealing sleeve 290 is at its the container facing Side with a substantially cylindrical piston skirt 302 Mistake. The upper end of the sealing sleeve 290 has an inner Ring flange 310, whose underside forms a shoulder 311, which rests on the upper end of a helical compression spring 340 when the pump piston 182 in its upper, unactuated position is arranged. In this unactuated position is the inlet valve (Channel 154) open. The annular flange 310 may be axially out adjusted this inactive position to a working position be in which the inlet valve is closed. The ring flange 310 extends with its shoulder 311 and its upper Front right-angled to pump axis 0-0 as well as axial in an annular groove 279 of the valve head 270th

As a result of the lower, from the upper end of the helical compression spring 340 formed stop for the sealing sleeve 290th creates a free space, which has a limited axial movement between the valve body 250 and the sealing sleeve 290 allows. Here is this relative mobility of the sealing sleeve 290 provided such that the contact surface of the sealing sleeve 290 on the inner valve surface 280 of the outer edge the valve head 270 in the one end position of the relative Movement range of the sealing sleeve 290 is applied, so that the of The inlet valve formed said parts is closed. The Circumstances under which this relative movement from an end position to the other end position occurs, in detail described below.

The piston skirt 302 of the sealing sleeve 290 is provided with guide ribs 350 outwardly projecting and over the circumference are spaced apart and with which the sealing sleeve 290 is slidable along the inner wall of the pump chamber 180, to the axial alignment of the sealing sleeve 290 within the Pumping chamber 180 as well as with respect to the tubular feed part 220 maintain.

The lower end of the sealing sleeve 290 is such that it telescopically in a sealing manner in firm contact along the Outside of the fixed tubular feeding part 220 after can be deformed down. For this purpose, the lower end the sealing sleeve 290 provided with an annular bead 360, the inwardly for abutment on the outside of the tubular feed part 220 protrudes when the movable sealing sleeve 290 itself downwards, as explained below.

According to Fig. 1, the spring 340 with its lower end within the pump chamber 180 at the base and within the tubular Feeder 220 disposed and engages around a lower guide pin 346, which is arranged coaxially to the main axis of the pump and protrudes upwards from the housing base. The guide pin 346 is a unitary part of the pump housing 148 and connects with its inlet channel 348 the adapter 20 with the tubular feeding part 220. It can be seen that the spring 340 normally the valve body 250 together with the it adjacent pump piston 182 in a fully raised Position biased when the pump is in its unactuated Rest position is located.

The valve head 270 is at the periphery of its down and similar to a truncated cone with several ribs (not shown), which are at a distance from each other over the Circumference are arranged and move down along the inner wall of the pump housing 148 and the axial guidance of the Support valve body 250.

The sealing sleeve 290 follows this movement briefly, while the Ring flange 310 with its shoulder 311 on the return spring 340th is supported. However, if the lower free end of the sealing sleeve 290 encounters the tubular supply member 220 is the movement of the sealing sleeve 290 briefly interrupted. however becomes the upper end of the short time on the tubular feed part 220 stopped sealing sleeve 290 quickly from the valve head 270 reached, so that both parts the closed position taking. From this moment, the valve head 270 performs the Seal sleeve 290 with it down, so that the sealing sleeve 290 telescopically sealing over the tubular supply part 220 slides. The resulting friction contributes to one Relative pressure of the inner flange 310 to the annular groove, so that the connecting channel 154 between the contact surface 318 of Seal sleeve 290 and the valve face 280 of the valve head 270th closed or sealed. From that moment on, that moreover, immediately after the start of the pump operation, the pump chamber 180 is completely closed. The Depressing the pump piston 182 now causes an increase the pressure in the pump chamber 180.

It must be stressed, however, that this behavior is a matter of choice strongly depends on the point at which the inner flange 310 is supported on the valve body 250. As long as the Pressure P in the pump chamber increases, adds an axial, outward force to the above-mentioned friction between the sealing sleeve 290 and the guide pin 346. If "s" is the cross sectional area of the ribbed groove extending from the inside of the piston skirt 302 of the sealing sleeve 290 to Inner wall of the pump chamber 180 extends, the force is from the Obtained product of "s" and "P". Even if "P" only slightly is increased, the force far exceeds the Friction of the sealing sleeve 290 on the tubular supply part 220 and is therefore critical to the tight closure of the connection channel 154. If this connection channel 154 is in such a distance from the main axis 0-0 of the metering pump is that an angular range with the cross section "S" for the Liquid under pressure "P" between the wing of the Seal sleeve 290 on the valve body 150 and the inner wall the pump cylinder 143 is accessible, develops a axial force "SP", which is directed towards the container and the Force "sP" counteracts and tends to the sealing sleeve 290 back and open the connection channel 154. It It must therefore be ensured in all circumstances that 'S' less than "s" is. During pressurization of the pump chamber 180 the connection channel 154 remains closed the better the smaller "S" with respect to "s". The in the Fig. Shown embodiment is an optimum insofar as "S" is equal to 0. In this phase of pressurizing the pump Consequently, all actions take place as if the sealing sleeve 290 and the valve body 250 inseparably connected to each other would. The liquid enclosed in the pumping chamber 180 is then delivered as in known pumps.

However, this analogy applies to the following phases of work the pump stops. Once the force "F" no longer applied is the return spring 340 pushes the valve body 250th back. The valve body 250 moves from the sealing sleeve 290, due to the friction on the tubular feed part 220 is kept in place. The sealing sleeve 290 therefore moves from the closed position to the open position Position. The connection channel 154 between the valve head 270 and the annular flange 310 of the sealing sleeve 290 is open and therefore provides a connection between the container and the Pump chamber 180 via the gaps or grooves ago, the are arranged between the guide ribs 350. The Return spring 340, on which the inner shoulder 311 of the annular flange 310, now takes the valve body 250 to the same Time as the sealing sleeve 290 with. This leads to a Volume increase in the pump chamber 180. Since the connecting channel 154 is open, liquid is in the pumping chamber 180th admitted. The connection channel 154 allows the To fill pumping chamber 180 to an extent through which the Volume of the pump chamber 180 increases. Therefore, if the metering pump 120 in their home or rest position completely has returned and the connection between the free bottom End of the sealing sleeve 290 and the upper end of the tubular Supply part 220 is restored, no liquid sucked through the tubular supply part 220. Theoretically Therefore, the connection would be superfluous. However, that would that is, a gas-tight contact between the tubular Feeding part 220 and the end of the sealing sleeve 290th constantly be maintained, and its quality inevitably at the expense of the plastic flow of the plastic parts would be reduced.

When the metering pump is actuated, the connection channel closes Therefore, almost at the same time, at which the connection 146 is interrupted. But if the pump piston 182 moves upward, the connecting channel 154 opens, before the connection is restored. A much lower one Vacuum therefore arises in the pump chamber 180. Consequently Only a small amount of air, if any, can penetrate itself when the seal of the pump piston 182 with respect to the Pump cylinder 143 should no longer be particularly tight. In particular, the pump piston 182 requires only a single one here Sealing lip 214. This single sealing lip 214 is for Executed so that, during the delivery of the liquid, the prevailing pressure in the pump chamber 180 continues strengthens the sealing effect. The abandonment of one of Both sealing lips reduce the friction of the pump piston 182 on the pump cylinder 143 by half. The spring 340 must therefore not as powerful as before, around the pump piston 182 and the valve body 250 to move upward again. The operator, the return spring 340 during the downward movement of the pump piston 182, therefore, must a lower force F spend in a more favorable ratio to the power of a child's finger All these Advantages are achieved with an additional part, namely the sealing sleeve 290, which is a special part. This improves the quality of the spray, which makes the delivery of a uniform dosage regardless of the age of the metering pump ensures. The two matching parts 250 and 290 of the differential piston therefore act on the return spring 340 together and allow the suction of the liquid during the operation of the metering pump. Then the pump chamber 180 filled with air, which is usually the case when the Metering pump is actuated for the first time, the pressure in the Pump chamber 180 by the downward movement of the moving parts 182, 250, 290 within the pump housing 148 not in such Extent increases that the exhaust valve 258, 262 are opened could. During the upward movement of conventional pistons is therefore the required for the liquid access vacuum in the Pump chamber 180 is absent. This disadvantage is characterized fixed that the connecting channel 154 between the pump chamber 180 and the container immediately at the beginning of the upward movement the pump piston 182 opens. As a result, the air can again be distributed, but at the same time in the opposite Direction. In this way, air flows out of the pump chamber 180 in the container. In the course of the further upward movement of the Pump piston 182 is simply due to the increase in volume in Pump chamber 180 caused a vacuum, which, as desired, Sucking liquid into the pumping chamber 180 and the latter filled with liquid.

The procedure for pressurizing is therefore the same as in the above-described pump 120. At the first actuation the pump 120, air is forced out of the pump while the product is sucked in during the return stroke.

In the approximately upright position of the pump 120 with the adapter 20 in Figs. 1 and 2, the product through the riser 32 during the Rückhubes sucked. The product flows around the check valve 50 and fills the pump chamber 180. This leaves the inlet or Sleeve valve 48 closed. Something happens during the pumping stroke of the product that is not in the pumping chamber 180, down through the adapter 20 through the check valve 50 pushed past by the riser 32, because the check valve 50 of its sealing position by the V-shape of the riser end or ribs on the adapter 20 kept away and in its so-called Throttle position is maintained.

In the not shown in the figures, overhead position of the pump 120 with the adapter 20, the check valve 50 falls on its throttle or ball seat and seals the check valve seat during the return stroke 54 off. By this sealing a vacuum in the Pumping chamber 180 caused by the flexible inlet valve 48 bulged inward and as a result is opened. Thereby, the product in the pump 120 through the inlets 46th sucked in the adapter 20 and the inlet valve 48 over. is the filling process ends, the inlet valve 48 closes and it As usual, the product can be discharged from the pumping chamber 180 become.

In Fig. 2 is a second embodiment of an adapter 20a shown in turn to the same pump 120 as in FIG. 1, is scheduled. In the adapter 20a is a sleeve-shaped inlet valve 48a in the region of its sleeve bottom 64a with an annular Sealing flange 66 a provided on a smooth cylindrical Length section 67a of the inner wall of the adapter housing 34a is tight and on the upper ends of support ribs 70a spaced below the lower end of the nipple 130a of the Housing 148 a of the pump 120 a is supported.

A valve sleeve 62a of low wall thickness is also made here elastically flexible material and engages with its upper end into the nipple 130a of the pump housing 148a. The valve sleeve 62a is located on a short length usually on an inner wall 76a of the lower end of the connecting nipple 130a of the adapter housing 34a sealingly, such that at a negative pressure within the adapter housing 34a, the wall of the valve sleeve 62a under the effect of the pressure difference by the inflowing Fluid is bulged inward and the inlet of the fluid in the adapter housing 34a allows.

The inlet consists of at least one inlet slot, wherein the Inlet at the embodiment of three shown in Fig. 2 Inlet slots 46a exist at the same circumferential angles the inner wall of a connecting piece 42 a are arranged and between the nipple 130a of the pump housing 148a and the upper connection piece 42a of the adapter housing 34a the lower end of the nipple 130a out into the interior of the adapter housing 34a extend.

An upper edge of the connection piece 42a of the adapter housing 34a, on the outside of the connection nipple 130a of the housing 148a of the dispenser 22a is for formation in each case one inlet opening 47a for the respectively associated one Inlet slot 46a cut out.

The inlet slots 46a extend over a lower edge the nipple 130a of the housing 148a down and out ends at a distance above the sealing flange 66a of the intake valve 48a to each outlet openings 49a of the inlet slots 46a to form. These outlet openings 49a are the Outside of the sleeve bottom 64a of the inlet valve 48a towering Valve sleeve 62a of the inlet valve 48a in the distance opposite.

Orifice 58a in the bottom of the adapter housing 34a, on the the spherical check valve 50a in the upright position of Container rests, is with at least three Umströmungskanälen 60a provided.

It can be seen that the adapter 20a in Fig. 2 is a shorter Overall length and a smaller dead volume in the adapter housing 34a having.

In Fig. 3, an adapter 20b is shown, the connecting piece 42b in diameter and with a larger wall thickness is provided. Several axially parallel extending and in equal circumferential angular intervals arranged inlet slots 46b are circumferentially by longitudinal ribs 47b on the inner wall the connecting piece 42b limited. In addition, the longitudinal ribs 47b at a distance above their lower ends of the same height respectively provided with a stop shoulder 43 b, on which the lower Front end of a connection nipple 130b of a dispenser forming pump 120b rests.

In the embodiment of an adapter 20c in Fig. 4 extends a flexible valve sleeve 62c of the inlet or sleeve valve 48c on substantially full length in a connection nipple 130c of a pump housing 148c and is normally only with the outside of its upper free end 35c on an inner wall 36c of the connecting nipple 130c sealingly.

Below this mentioned sealing area between inlet valve 48c and nipple 130c is the inner wall of the nipple Extended 130c at 45c to assemble the intake valve 48c and the lifting of the upper end 35c of the intake valve 48c of the inner wall of the connecting nipple 130c to facilitate. Inlet slots 46c extend between the port 42c of the adapter housing 34c and the nipple 130c the housing 148c of the dispenser 120c.

The adapter housing 34c is above a valve chamber 52c with an inner annular shoulder 33c provided, on which an annular flange 74c of the intake valve 48c is supported. The light Diameter of the annular shoulder 33c corresponds approximately to the clear Diameter of the connecting nipple 130c of the pump housing 148c. On top of the annular shoulder 33c are at least three stops 38c formed at the same circumferential angular distances are arranged and at the lower end of the nipple Abut 130c and radially inward passageways 37c for to form the liquid product that communicates with the inlet slots 46c aligned and in the annulus between nipple 130c and Go over valve sleeve 62c.

Here, a longitudinal section extends below the annular shoulder 33c the adapter housing 34c, a smooth cylindrical Inner wall of the valve chamber 52c for a check valve 50c forms. The diameter of the valve chamber 52c is also essential here greater than the diameter of the spherical stop valve 50c, so that a good flow around the check valve 50c is reached.

The longitudinal ribs 49c separate the inlet slots 46c in the circumferential direction the inner wall of the upper, the connecting piece 42c forming End of the adapter housing 34c. The stops 38c are on same axial height at a distance above the inner annular shoulder 33c of the adapter housing 34c arranged.

In Fig. 4 it can also be seen that the upper, in the valve chamber 52c projecting end of a riser 32c with his Gable roof-shaped tip 76c over the height of support webs 77c out into the valve chamber 52c protrudes, so that the spherical Lock valve 50c has a relatively large flow area releases. Furthermore, it can be seen that the height of the Adapter 20c is extremely low because of the connecting piece 42c over approximately full length of the connection nipple 130c overlaps and moreover, the intake valve 48c almost completely closes the nipple 130c overlaps. Because of this compact arrangement the said parts is a stable holder of the adapter housing 34c and the riser tube 32c in a riser nipple 40c of the adapter 20c guaranteed.

Fig. 5 shows a modified embodiment of an intake valve 48d, the check valve seat 54d a 45 ° angle for a optimal sealing by a spherical check valve 50d having. A sleeve bottom 64d is radially outward protruding sealing flange 74d provided on an inner Ring shoulder 37d of an adapter housing 34d mounted sealingly is. The top of the sealing flange 74d is four Provided in the same circumferential angles arranged ribs 75d, the extending to the outer periphery of the sealing flange 74d and as a stop for the lower end of a nipple 130d serve. The inner wall of a connecting piece 42d of the adapter housing 34d is arranged with three at equal circumferential angular distances axial inlet slots 46d provided, the U-shaped around the nipple 130d, as on the left Side of Fig. 5 can be seen.

In Fig. 5, as in Fig. 4 by the cross-sectionally U-shaped Inlet slots 46d ensure that the top end the valve sleeve 62d alone on the inner wall of the Connecting nipple 130d sealingly abuts, at a pressure difference between both sides of this sealing area itself slightly lift off the inner wall of the nipple 130d and can open.

Above the bottom of a valve chamber 52d are at equal circumferential angular intervals four ribs 51d provided which ensure that at a not fully inserted into the riser nipple 40d Riser 32d the spherical check valve 50d the Adapter housing 34d in a pump stroke in the upright position of Pump 120d does not shut off.

Fig. 6 shows a modified embodiment of an adapter 20e according to the invention, in which at a distance above a passage opening 80e in the bottom of a valve chamber 52e for a spherical Shut-off valve 50e an impact plate 82e at an axial distance is arranged above the passage opening 80e. The free, front End 83e of baffle 82e extends from the inner wall the valve chamber 52e at a distance via the passage opening 80e and ends at a distance in front of the diametrically opposite Page. The baffle plate 82e covers the passage opening 80e, such that the fluid flow from a riser 32e against the inner wall the valve chamber 52e is directed and the spherical Lock valve 50e can flow around, so that it is the suction stroke of the Pump 120e or with open dispensing valve of a pressure vessel remains open.

Fig. 7 shows a modified embodiment of an adapter 20f and an intake valve 48f, whose lower edge 67f as annular sealing flange 66f is formed and up to its outer edge has an increasingly smaller wall thickness. The intake valve 48f is as described in all Cases made of elastically flexible material, e.g. silicon or PE, and is above the sealing flange 66f again as a valve sleeve 62 f formed with its upper end in a nipple 130f used a pump housing 148f is. The upper end of the valve sleeve 62f is at its periphery with Ribs 45f which form passageways 30f which connect between the pump housing 148f and the interior of the container.

The adapter 20f has an adapter housing 34f that has an extended Sealing flange chamber 90f contains and therefore made in two parts becomes. The sleeve-shaped inlet valve 48f is at its bottom end provided with the sealing flange 66f, whose Diameter much larger than that of the upper valve sleeve 62f whose lower end is the sealing flange 66f forms. A bottom 92f of this seal flange chamber 90f is with several, arranged at equal circumferential intervals inlet openings 97f provided for the fluid normally through the outer edge increasingly thinner and thus more flexible sealing flange 66f are sealed by the flange in the Sealing flange chamber 90f sealing on the inlet openings 97f rests. In overhead position of the device is the Sealing flange 66f at a suction stroke of the pump 120f of the Inlet openings 97f lifted so that the liquid product the container can be sucked into the pump housing 148f. In a valve chamber 52f for a spherical check valve 50f also a baffle plate 82f arranged. In deviation from the in the embodiment shown in FIGS. 6 and 7, the Flap also have a round shape and coaxial and in the distance above a passage 80f in the bottom of the valve chamber 52 f be arranged, wherein at least three thin webs the Baffle plate with the annular shoulder bottom of the valve chamber Connect 52f.

The embodiment of the adapter in FIGS. 8 to 15 differs from those in Figs. 1 to 7 mainly in that the inlet valve and the adapter are made in one piece are.

In Fig. 8, an adapter 20 g is shown, with a sleeve-shaped Inlet valve 48g is integrally formed. A connecting piece 42g of the adapter 20g surrounds a valve sleeve at a distance 62g, so that they in the cross section of FIG. 8 U-leg of a Ring space 63g for a connection nipple 130g of a pump housing Form 148g. Also in this embodiment are at the Inside the connecting piece 42g several inlet slots 46g provided by the longitudinal ribs 65g on the inner wall of the Connecting piece 42g are separated. These longitudinal ribs end its lower end in stop shoulders 77g for the lower one Front end of the connecting nipple 130g of the pump housing 148g, the at a radial distance from the outer wall of the valve sleeve 62g are arranged.

The nipple 130g is about three quarters of its length on the inside with an extension 29g provided with the outer wall of the valve sleeve 62g forms an annular space 31g, in the cross section of FIG. 8, the inner leg of the U-shaped Inlet slot 46g forms and only close to the top End of the valve sleeve 62g ends, which the inlet slots 46g seals against the inner wall of the connecting nipple 130g. The annular space 31g tapers to the upper, on the inner wall of the connecting nipple 130g adjacent the end of the valve sleeve 62g, such that the sealing, upper end of the valve sleeve 62g by the liquid product more easily from the inner wall of the Connection nipple 130g can be lifted in the opening direction.

The lower end of a conical length portion 21g of the adapter housing 34g is provided by a check valve seat 54g for a spherical Lock valve 50g within a valve chamber 52g educated. The substantially cylindrical valve chamber 52g is provided at equal circumferential intervals with longitudinal ribs 71g, which the spherical shut-off valve 50g at a radial distance of the inner wall of the valve chamber 52g axially and thereby Flow channels 60g through which the liquid product of the Container can flow around the check valve 50g.

The lower ends of the longitudinal ribs 71g are considered to be radially inward protruding support beads 73g for the spherical check valve 50g educated. Below the formed by the Tragwülsten 73g Seat for the check valve 50g is the upper, again gabled roof-shaped tapered end of a standpipe 32g inserted and by a narrowing of the inner wall of a riser nipple 44g kept axially immovable.

The inner diameter of the valve chamber 52g and the riser pipe 44g are the same as the outer diameter of the valve chamber 52g and the riser nozzle 44g are substantially the same size sized.

The modification of an adapter 20h shown in FIG. 9 relates only the support of a spherical shut-off valve 50h, the only diametrically opposed by the two Tips 33h of a riser 32h with release is supported by throttle openings 58h. Accordingly are Longitudinal ribs 71h in a valve chamber 52h for the check valve 50h over the entire length provided with the same cross section, so that the check valve 50h through the longitudinal ribs 71h in axial direction only at a radial distance from the inner wall the valve chamber 52h is axially guided. Fig. 10 illustrates in a rotated by 90 ° view the position of the spherical stop valve 50h on the gable roof tail end of the Riser 32h.

Fig. 11 shows an embodiment in which both a housing 148i of a pump 120i and an adapter 20i are modified. A bottom 360i of the pump housing 148i is with passageways 25i, wherein a tubular guide pin 346i extends beyond the bottom 360i of the pump housing 148i down freely through a valve sleeve 62i extends and only with its lower end in a valve chamber 52i for a spherical Lock valve 50i engages and the valve chamber 52i in Direction of the pump 120i completes. At the same time it forms lower end of this tubular guide pin 346i a Lock valve seat 54i for the check valve 50i.

In the lower end of the valve chamber 52i is umumm a support device 56i provided for the spherical shut-off valve 50i, as already described in connection with FIG. 1 above. At a distance below this support 56i is again the upper, gabled roof-shaped end 76i one in one Riser tube nipple 44i used to recognize riser 32i.

The upper end of the valve sleeve 62i in turn forms a flexible Seal against the inner wall of a nipple 130i the pump housing 148i, wherein inlet slots 46i as shown in FIGS. 8 and 9 provided in connection with the upper end of the adapter 20i are.

So that the upper, normally sealing end of the valve sleeve 62i at a pressure difference from the cylindrical inner wall of the nipple 130i can lift, is the cylindrical Inner wall of the valve sleeve 62i at a radial distance from the cylindrical circumference of the tubular guide pin 346i disposed through which a passageway 347i extends. It can be seen that the cylindrical inner diameter of the smooth-walled valve chamber 52i is dimensioned smaller than that Inner diameter of the valve sleeve 62i and to the outer diameter of the guide pin 346i is precisely adapted to a seal between the guide pin 346i and the inner wall of the valve chamber 52i to ensure. In this area is the adapter housing 34i turn in the direction of the valve chamber 52i conical Tapered shaped.

Fig. 12 shows another embodiment of an adapter 20k with an adapter housing 34k, which is designed extremely compact and a sleeve-shaped intake valve 48k, a check valve seat 54k for a spherical shut-off valve 50k and a riser nipple 44k interconnects in a compact design. In the present Embodiment is a connection nipple 130k one Pump housing 148k extended so far that he not only one Valve sleeve 62k, but also a valve chamber 52k up in height the open end position of the spherical blocking valve 50k includes. There is the adapter housing 34k with an annular flange 35k provided, whose outside with the outer circumference of the connecting nipple 130k approximately aligned. The inner wall of the connection nipple 130k is extended up to the vicinity of a sleeve bottom 64k, to form inlet slots 46k on the outside of the the valve chamber 52k surrounding wall of the adapter housing 34k are arranged and from the annular flange 35k up to a Height extend below the throttle valve seat 54k for the check valve 50k is provided.

The spherical check valve 50k is in its lower, open End position only by the tips 33k of a riser 32k supported, as described in connection with FIG. 9 in detail has been. In the reverse position of that shown in FIG Device is a pressure difference acting on the fluid, as described, the upper end of the valve sleeve 62k lift inwards from the inner wall of a connection nipple 130k, such that the liquid product passes through an intake passage 347k can penetrate into the housing 148k of the pump 120k.

Finally, in Fig. 13, an adapter 201 is shown with the a connection piece 421 a connection nipple 1301 of a housing 1481 a pump 1201 at a radial distance to form several inlet slots 461 overlaps. The inlet slots 461 are in turn arranged in a U-shaped cross section, so that they also between the outer wall of a valve sleeve 621 to extend in front of the upper end of the same, which in turn flexible is formed and sealingly on the inner wall of the Connecting nipples 1301 in the upright position and in the unactuated Condition of the device is applied. The inner wall of the connection nipple 1301 is provided with longitudinal ribs 311, which the inlet slots Separate 461 in the circumferential direction. Preferably three or four such inlet slots 461 are provided.

In the assembled position of the adapter 301 is a check valve seat 541 disposed within the nipple 1301. Since the Lock valve seat 541 through to the upper end of the adapter 201 conically tapered ring wall 551 can be made Length of an adapter housing 341 saved or the distance of the Closed position and the lower open position of a spherical Shut-off valve 501 can be increased. A riser nipple 441 for a riser 321 is on the outside with stiffening ribs 691, extending from the lower end of the riser nipple 441 to the lower end of the upper connecting piece 421 which is attached to a shoulder 411, which differs from the outer wall of the adapter 201 at a distance below the check valve seat 541 extends radially outward. The connecting piece 421 in turn forms together with the valve sleeve 621 a Inlet valve 481, wherein the nipple 1301 in the connection piece 421 engages, so that the valve sleeve 621 the nipple seals on the inner wall. It can also be seen that a valve chamber 521 is designed smooth cylindrical and a much larger diameter than the spherical check valve 501, the only through the tips 331 of the riser 321 is held in its lower open position and consequently a large free cross section between the spherical Shut-off valve 501 and the inner wall of the valve chamber 521 for the suction of the liquid product into the housing 1481 of Pump 1201 is available in its upright position.

The above description of numerous embodiments The invention gives an impression of the adapter achieved according to the invention advantages. These exist in the Use of a positive contact seal for the upright dispensing position the dispenser compared to a ball valve with conventional systems. In addition, all are Components, namely the housing of the dispenser, the adapter and the riser coaxially aligned.

Finally, the invention of the underlying concept of Use of three parts for a variety of immersion tube sizes usable for cost reduction and / or performance improvement. Not least by the means of the sleeve-shaped Inlet valve achieved positive contact seal in each type of Overhead position of the device is a substantially constant Discharge performance of the dispenser achieved. Further can dip tubes and valve balls of different sizes in Connection can be used with the adapter according to the invention. In addition, there are several ways to hold back the Ball valve in the adapter and the attachment to a pump or a valve associated housing. Finally, it is possible realize the invention with a minimum number of parts.

LIST OF REFERENCE NUMBERS

20

adapter

22

dispenser

26

ground

30

Passageway

32

riser

34

adapter housing

36

connecting channel

38

upper end (adapter housing)

40

lower end (adapter housing)

42

connecting branch

44

Riser pipe nipple

46

inlets

48

intake valve

50

check valve

52

valve chamber

54

Check valve seat

56

support device

57

supporting ribs

58

throttle openings

60

Umströmungskanal

62

valve sleeve

64

sleeve base

66

inlet ports

68

cyl. Wall (adapter housing)

70

support ribs

72

upper end (riser)

74

longitudinal section

120

metering

122

cap

123

annular gap

124

screw thread

130

connecting nipple

131

wall

132

cyl. opening

134

annular flange

138

holder

140

outer wall

142

annular flange

143

pump cylinder

148

casing

150

flange

154

connecting channel

156

shoulder

162

Vert. groove

164

end wall

168

ring groove

170

radial groove

171

annular channel

172

inner sleeve

173

lower end (inner sleeve)

174

ribs

177

annulus

180

pump chamber

182

pump pistons

186

pump shaft

190

actuating head

192

discharge opening

194

outlet channel

198

outlet channel

202

sealing surface

214

sealing lip

220

tubular feed part

250

valve body

258

valve seat

270

valve head

274

ribs

280

conical valve surface

290

grommet

302

piston skirt

310

annular flange

311

shoulder

318

contact area

330

spigot

340

Return spring, helical compression spring

346

lower guide pin

348

suction

350

guide ribs

360

torus

20a

adapter

30a

connecting nipple

34a

adapter housing

37a

Passageways

42a

connecting branch

46a

inlet ports

47a

inlet port

48a

intake valve

49a

outlet

50a

check valve

58a

throttle openings

60a

flow-around ducts

62a

valve sleeve

64a

sleeve base

66a

sealing flange

67a

smooth cylindrical longitudinal section

70a

support ribs

76a

inner wall

130a

connecting nipple

148a

casing

20b

adapter

42b

connecting branch

43b

stop shoulder

45b

extension

46b

inlet ports

47b

longitudinal ribs

120b

pump

130b

connecting nipple

20c

adapter

32c

riser

33c

annular shoulder

34c

adapter housing

35c

upper free end

36c

inner wall

37c

Passageways

38c

attacks

40c

Riser pipe nipple

42c

connecting branch

45c

extension

46c

inlet ports

48c

intake valve

49c

longitudinal ribs

50c

check valve

52c

valve chamber

62c

valve sleeve

74c

annular flange

76c

top

77c

supporting webs

120c

pump

130c

connecting nipple

148c

casing

32d

riser

34d

adapter housing

37d

inner ring shoulder

42d

connecting branch

46d

inlet ports

48d

intake valve

50d

check valve

51d

ribs

52d

valve chamber

54d

Check valve seat

62d

valve sleeve

64d

sleeve base

74d

sealing flange

75d

ribs

120d

pump

130d

connecting nipple

20e

adapter

32e

riser

46e

inlet ports

50e

check valve

52e

valve chamber

62e

valve sleeve

80e

Through opening

82e

flapper

83e

front end

120e

pump

20f

adapter

30f

Passageways

34f

adapter housing

45f

ribs

48f

intake valve

50f

check valve

52f

valve chamber

62f

valve sleeve

66f

sealing flange

67f

lower edge

50f

check valve

80f

opening

82f

flapper

90f

Dichtungsflanschkammer

92f

ground

97f

inlets

120f

pump

130f

connecting nipple

148f

pump housing

20g

adapter

21g

conical length section

29g

extension

31g

annulus

32g

riser

34g

adapter housing

42g

connecting branch

44g

Riser pipe nipple

46g

inlet ports

48g

sleeve-shaped inlet valve

50g

spherical stop valve

52g

valve chamber

54g

Check valve seat

60g

flow-around ducts

62g

valve sleeve

63g

annulus

65g

longitudinal ribs

71g

longitudinal ribs

73g

Tragwülste

77g

stop shoulders

130g

connecting nipple

148g

pump housing

20h

adapter

33h

sharpen

50h

check valve

52h

valve chamber

58h

throttle openings

71h

longitudinal ribs

20i

adapter

25i

Passageways

44i

connecting nipple

46i

inlet ports

50i

check valve

52i

valve chamber

54i

Check valve seat

56i

support device

62i

valve sleeve

76i

Gable roof-shaped end

120i

pump

130i

connecting nipple

148i

casing

346i

tubular guide pin

347i

Passageway

360i

ground

20k

adapter housing

32k

riser

33k

sharpen

34k

adapter housing

35k

annular flange

42k

connecting nipple

44k

Riser pipe nipple

46k

inlet ports

48k

intake valve

50k

check valve

52k

valve chamber

54k

Check valve seat, throttle valve seat

62k

valve sleeve

64k

sleeve base

70k

guide rails

120k

pump

130k

connecting nipple

148k

casing

347K

intake port

201

adapter

301

connecting nipple

311

longitudinal ribs

321

riser

331

sharpen

411

shoulder

421

connecting branch

441

Riser pipe nipple

461

inlet ports

481

intake valve

501

check valve

521

valve chamber

541

Check valve seat

551

ring wall

621

valve sleeve

691

stiffening ribs

1201

pump

1481

casing

Claims (30)

1. Adapter (20) for a hand-operated dispensing device (120) for a fluid which is/can be placed under pressure in a container in the substantially upright position thereof and in the substantially inverted or upside-down position thereof, the dispensing device (120) comprising:

   a) a housing (148) which is fixed so as to be sealed on an opening at the upper end of the container;

   b) a base (26), at the lower end of which there is disposed a connecting nipple (130);

   c) a through channel (30) which extends through the base and the connecting nipple (130) and is connected to a riser pipe (32) extending into the fluid in the container for the passage of the fluid in the substantially perpendicular position of the container,
   characterised by

   d) a tubular adapter housing (34) which contains a connecting channel (36) between the riser pipe (32) and the through channel (30) of the housing (148) of the dispensing device (120), the adapter housing (34) comprising in each case a connecting pipe (42) for the connecting nipple (130) and a riser pipe connection (44) for the riser pipe (32);

   e) a plurality of inlets (46) for the fluid in the substantially inverted position of the container relative to the dispensing device (120), the adapter housing (34) forming at least part of the inlets (46);

   f) a sleeve-like inlet valve (48) within the adapter housing (34) for the approximately simultaneous closure of the inlets (46) in the approximately upright position of the container, but for the approximately simultaneous clearance of the inlets (46) in the event of a pressure acting on the fluid in the container in the substantially inverted position of the container;

   g) a check valve (50), which is disposed within a valve chamber (52) of the adapter housing (34) so as to be freely movable axially between two end positions, wherein in the upright position of the container the upper end position is defined by a check valve seat (54) extending transversely through the adapter housing (34) and the lower position is defined by a supporting device (56) on which the check valve (50) adopts a throttle position for the fluid, leaving throttle openings (58) free;

   h) a valve chamber (52) having a diameter of greater dimension than the diameter of the check valve (50) in order to form a circulation channel (60) for the fluid in the upright position of the container.
2. Adapter as claimed in Claim 1, characterised in that the inlet valve (48) is inserted as a special component into the adapter housing (34) so as to be immovable axially.
3. Adapter as claimed in Claim 2, characterised in that the inlet valve (48) consists of a valve sleeve (62) with a sleeve base (64) and is supported within the adapter housing (34) at a distance below the inlets (46), which consist of a plurality of inlet openings (66) provided at the same height and at the same circumferential angular intervals in the cylindrical wall of the adapter housing (34) and which in the upright position of the container are sealed by the valve sleeve (62) but, in the event of a reduced pressure in the adapter housing (34) relative to that prevailing in the container, are opened by a radially inwardly directed bulging of the sleeve wall.
4. Adapter as claimed in Claim 3, characterised in that at least three supporting ribs (70) disposed at equal circumferential angular intervals extend radially inwards from the inner wall of the adapter housing (34) and upwards from the base of the adapter housing (34) and end at a distance below the inlet openings (66), the sleeve-like inlet valve (48) being supported by its base on the upper end faces of the supporting ribs (70).
5. Adapter as claimed in Claim 4, characterised in that the supporting ribs (70) are simultaneously guide ribs for the coaxial movement of the check valve (50) in the adapter housing (34) and intermediate spaces which are disposed in the circumferential direction of the interior wall of the adapter housing (34) between the supporting ribs (70) form bypass channels (60) through which in the upright position of the container the fluid can flow past the check valve (50) in the direction of the dispensing device (120).
6. Adapter as claimed in Claim 5, characterised in that a lower end of the adapter housing (34) has a tapered longitudinal section (74), the lower end of which forms the riser pipe nipple (44) of smaller diameter, wherein the supporting ribs (70β) are guided into the tapered longitudinal section (74), project radially inwards and adopt a distance from one another, diametrally relative to the valve chamber (52), which corresponds to the internal diameter of the riser pipe nipple (44) and is of smaller dimension than the diameter of the check valve (50), in order to form bearing ribs (57) for the check valve (50).
7. Adapter as claimed in Claim 4, characterised in that the sleeve-like inlet valve (48a) is provided in the region of its base with an annular sealing flange (74a) which bears so as to form a seal on the smooth cylindrical inner wall (68a) of the adapter housing (34a) at a distance below the lower end of the inlets (46a) and of the lower end of the connecting nipple (130) of the housing (148) of the dispensing device (120) and is supported on the upper ends of the supporting ribs (70a).
8. Adapter as claimed in Claim 7, characterised in that the valve sleeve (62a) of slight wall thickness is made from resilient material and rests so as to form a seal with its upper end over a short length normally on the inner wall of the lower end of the connecting nipple (130a) of the dispensing housing (148a) in such a way that in the event of a reduced pressure within the adapter housing (34a) the wall of the sealing sleeve (62a) is bulged inwards by the fluid flowing in under the action of the pressure difference and permits the entry of the fluid into the adapter housing (34a).
9. Adapter as claimed in claim 8, characterised in that the inlets are inlet slots (46a) which extend between the connecting nipple (130a) of the housing (148a) of the dispensing device (120a) and the upper tubular end (42a) of the adapter housing (34a) beyond the lower end of the connecting nipple (130a) and into the interior of the adapter housing (34a).
10. Adapter as claimed in Claim 9, characterised in that the lower end of the inlet slots (46a) extends beyond the lower edge of the connecting nipple (130a) of the dispensing housing (148a) and ends above the sealing flange (64a) of the inlet valve (48a) in order to form outlet openings (49a) of the inlet slots (46a).
11. Adapter as claimed in Claim 9, characterised in that the inlet slots (46c) are disposed in the cylindrical inner wall of the upper end of the adapter housing (34c) which is pushed firmly onto the connecting nipple (130c), wherein stops (38c) project radially on the inner wall of the adapter housing (34c) and delimit the lower end of the inlet slots (46c) at a distance below the lower end of the connecting nipple (130c) in order to form through channels (37c) of the inlet slots (46c) which lie opposite and spaced from the outside of the valve sleeve (62c) of the inlet valve (48c), the said valve sleeve projecting from the base (74c) of the inlet valve (48c).
12. Adapter as claimed in Claim 11, characterised in that the valve sleeve (62c) of the inlet valve (48c) extends over substantially the entire length into the connecting nipple (130c) of the dispensing housing (148c) and rests so as to form a seal only with the outside of its upper free end (35c) on the inner wall (36c) of the connecting nipple (130c) in the substantially upright position of the container.
13. Adapter as claimed in Claim 12, characterised in that the annular flange (74c) of the inlet valve (48c) is supported on an inner annular shoulder (33c) of the adapter housing (34c), wherein a longitudinal section of the adapter housing (34c) which forms a smooth cylindrical inner wall of the valve chamber (52c) for the check valve (50c) extends below this annular shoulder (33c).
14. Adapter as claimed in Claim 13, characterised in that longitudinal ribs (49c) by which the inlet slits (46c) in the circumferential direction of the interior wall of the upper tubular end of the adapter housing (34c) are separated from one another are provided at the same axial height with the stops (38c) for the lower end of the connecting nipple (130c) of the housing (148c) of the dispensing device (120c) at a distance above the inner annular shoulder (33c) of the adapter housing (34c) for the sleeve-like inlet valve (48c).
15. Adapter as claimed in Claim 1, characterised in that the valve chamber (52) of the adapter housing (34) is delimited at the lower end by an annular base from which at least three bearing ribs (57) for the check valve (50) project, the said bearing ribs being disposed at the same angular intervals over the circumference of the valve chamber (52) and surrounding an insertion opening in the riser pipe nipple (44) of the adapter housing (34) for the riser pipe (32).
16. Adapter as claimed in Claim 1, characterised in that on both sides of a plane in which the bore of the riser pipe (32c) extends the upper end of the riser pipe (32c) is cut off at an angle of 45° so that two tips (76c) of the riser pipe end which lie opposite one another project over the plane of the annular base of the valve chamber (52c) to support the check valve (50c).
17. Adapter as claimed in Claim 2, characterised in that the lower end of the valve sleeve (62f) of the inlet valve (48f) is constructed as a flexible sealing flange (66f) which extends substantially radially outwards from the lower end of the inlet valve (48f), and the outer wall of the upper end of the valve sleeve (62f) rests against the inner wall of the connecting nipple (130f) and forms therewith passage channels (30f) for the fluid.
18. Adapter as claimed in Claim 17, characterised in that a chamber (90f) of widened diameter is provided between the upper end (42f), fixed on the connecting nipple (130f), of the adapter housing (34f) and the valve chamber (52f) thereof for the lower flexible sealing flange (66f) of the inlet valve (48f), wherein the annular base (92f) thereof which projects radially over the circumference of the valve chamber (52f) is provided with inlet openings (97f) for the fluid in the inverted position of the container, the sealing flange (66f) of the inlet valve (48f) resting so as to form a seal on the inlet openings (97f) in the upright position of the container.
19. Adapter as claimed in Claim 1, characterised in that the inlet valve (48g) forms a unit with the adapter housing (34g).
20. Adapter as claimed in Claim 19, characterised in that the inner annular shoulder (21g) of the adapter housing (34g), which delimits the lower end of the inlet slots (46g) which form the inlets, extends radially inward and merges into the sealing sleeve (62g) of the inlet valve (48g), the base of the latter being disposed in the region of a downwardly tapering longitudinal section of the adapter housing (34g) and having on its underside the valve seat (73g) for the check valve (50g) in the valve chamber (S2g) of the adapter housing (34g).
21. Adapter as claimed in Claim 20, characterised in that lower ends of longitudinal ribs (71 g) in the valve chamber (52g) of the adapter housing (34g) are shaped as bearing beads (73g) which project radially inwards and form a seat for the check valve (50g) at a distance above the tips (33h) of the upper end of the riser pipe (32h), the diameter of which corresponds approximately to the internal diameter of the valve chamber (52g).
22. Adapter as claimed in Claim 19, characterised in that a tubular guide lug (346i) of the housing (148i) of the dispensing device (120i) is inserted into the upper end of the adapter housing (34i), the lower end thereof forming the valve seat (54i) for the check valve (50i).
23. Adapter as claimed in Claim 22, characterised in that the cylindrical guide lug (346i) extends downwards from the underside of the base (360i) of the housing of the dispensing device (120i), the said base (360i) being disposed a small distance above the upper end of the valve sleeve (62i) and provided with through channels (25i) which connect the interior of the adapter housing (34i) to the interior space of the housing (148i) of the dispensing device (120i).
24. Adapter as claimed in Claim 19, characterised in that the upper end of the adapter housing (34k) is constructed as the sleeve-shaped inlet valve (48k) and the cylindrical inner wall of the connecting nipple (130k) forms the valve seat for the upper outer end of the inlet valve (48k) a small distance below the base of the housing of the dispensing device (120k).
25. Adapter as claimed in Claim 24, characterised in that the inner wall of the connecting nipple (130k) of the housing (148k) of the dispensing device (120k) has guide strips which rest on the outer wall of the adapter housing (34k) and form inlet slots (46k), the inlet opening of each of which is formed by the lower end of the connecting nipple (130k) and an annular flange (35k) which extends radially outwards from the outer wall of the adapter housing (34k).
26. Adapter as claimed in Claim 25, characterised in that the upper end of the riser pipe (32k) is chamfered in the manner of a gabled roof, the two tips (33k) being disposed at the height of the annular flange (35k) and supporting the check valve (48k) in the upright position of the container.
27. Adapter as claimed in Claim 26, characterised in that the valve chamber (52k) of the adapter housing (34k) is provided with guide strips (70k) for the check valve (50k) which extend with parallel axes, the lower ends thereof extending to the height of the annular flange (35k) and the upper ends thereof extending approximately to the base (64k) of the sleeve, approximately in the longitudinal centre of the longitudinal section of the adapter housing (34k) which begins at the annular flange (35k) and ends at the upper end of the adapter housing (34k) forming the valve sleeve (62k) and is inserted into the connecting nipple (130k), forming inlet slots (46k).
28. Adapter as claimed in Claim 1, characterised in that a baffle plate (82e) is disposed at a distance above the opening (80e) in the base of the adapter housing (34e) in order to guide the flow of fluid in the upright position of the container into the bypass channels (60e) for the check valve (50e) in the valve chamber (52e).
29. Adapter as claimed in Claim 28, characterised in that the baffle plate (82e) is connected by way of at least one bearing rib (79e) to the inner wall of the valve chamber (52e) of the adapter housing (34e) and forms the bearing device for the check valve (50e) in the upright position of the adapter (20e).
30. Adapter as claimed in Claim 1, characterised in that the check valve (50) is a ball valve in the valve chamber (52).

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