DK2414103T3

DK2414103T3 - Disposable Container, its use and method of pressurizing a disposable container

Info

Publication number: DK2414103T3
Application number: DK11713235.7T
Authority: DK
Inventors: Werner Neukirch; Dennis Grittmann
Original assignee: Fass Frisch Gmbh
Priority date: 2010-04-13
Filing date: 2011-04-01
Publication date: 2015-09-07
Also published as: EP2414103B1; EP2414103A1; EP2377622A1; RU2012102994A; WO2011128215A1; UA109398C2; ES2543403T3; RU2529511C2

Description

The invention relates to a single-use package, in particular a single-use paint package for receiving and discharging a paint fluid by spraying, a method for pressurizing such a package, and the use of such a package for paint, varnish, glaze, wood preservative or similar fluids.

Single-use paint packages are known from the prior art, for example, in the form of aerosol spray cans. In said cans, a paint fluid and a pressurized propellant container are arranged in the can. A discharge valve is arranged on the top side of the can, upon actuation of which paint fluid pressurized by the propellant can be sprayed via a spraying nozzle provided at the valve. What is disadvantageous in such aerosol spray cans is that their sizes or filling volumes are usually limited to 250 ml up to 1000 ml. In the case of aerosol spray cans of larger volume, handleability is disadvantageously deteriorated or even impossible. If a user wishes to discharge a correspondingly great amount of paint, he is forced to use a plurality of such aerosol spray cans which have to be disposed of or recycled being a corresponding burden to the environment. A further problem in single-use paint spray packages of large volume is that a loss of pressure in the package, loss of propellant in the propellant reservoir and drying up or other losses of quality of the paint fluid may occur unless the entire paint fluid is used up in one application. A single-use package according to the preamble of claim 1 is disclosed in document US 1,196,965.

Based on the above described prior art, it is the object of the invention to provide a single-use package for receiving and discharging a paint fluid by spraying which is suitable for fluid volumes of up to 10 liters or more, meets a high safety standard, can be stored safely and without loss of pressure or propellant especially prior to a first use, in which paint fluid can be stored for extended periods of time without loss of quality and can still be used especially after a partial consumption, and which is easy to dispose and recycle as well as easy to handle. Furthermore, it is the object of the invention to provide a method, by which such a single-use package can be pressurized.

On the apparatus side, the object is achieved by a single-use package, in particular a single-use paint package for receiving and discharging a paint fluid by spraying, comprising a container forming a storage volume for the paint fluid, and a pressure control unit which can be connected to a propellant reservoir, wherein the propellant reservoir is or can be disposed at a receiving unit of the single-use package, wherein a tapping element for tapping the propellant reservoir can be positioned relative to the receiving unit, which tapping element is movable via a user-side operable actuator and comprises a sealing portion, by means of which an outlet opening introduced into the propellant reservoir by means of the tapping element can be sealed off.

The invention enables preassembly of the propellant reservoir at or in the receiving unit without pressurized propellant being able to escape therefrom and without the paint fluid container being subjected to increased pressure especially for an extended period of time prior to a first use. The only unit which is required to withstand a continuously high pressure is the propellant reservoir itself. However, the residual units of the single-use package only need to be adapted to withstand increased pressure for shorter periods of time. This is advantageous especially against the background that the package according to the invention is a single-use package, in which preferably less high-quality materials are used than in multi-use packages. Furthermore, the package can be realized with less material which results in savings in resources and cost. A package in the sense of the invention is understood to be, in particular, a singleuse paint package.

In principle, the propellant reservoir can be arbitrarily arranged at or in the receiving unit. Particularly advantageously, it is screwed to the receiving unit so that customary pressurized gas cartridges can be used as a propellant reservoir. In addition, the propellant reservoir can be connected to the receiving unit by means of a latching connection or other positive fit. Particularly advantageously, the propellant reservoir is a C02 cartridge. The amount of the gas contained in the cartridge or propellant reservoir is essentially dependent on the internal pressure of the container required for spraying the paint fluid and on the container volume. Particularly advantageously, a customary 38g C02 cartridge is used together with a 5 liter container. Depending on the spraying nozzle used, an internal container pressure of between 2.0 bar and 3 bar, preferably 2.5 bar, has proven to be particularly advantageous. At a pressure of 2.5 bar, 5 liters of paint fluid can be sprayed using a customary 38g C02 cartridge. However, these values can vary depending on the paint fluid. A paint fluid in the sense of the present invention is understood to include, in particular, paints, varnishes, wood preservatives, oils or similar liquids which are to be discharged by the spaying nozzle as evenly distributed as possible. It is to be noted that spraying pressure, nozzle size and viscosity of the paint fluid to be sprayed must be adapted to each other. Depending on the paint fluid, other propellants can be used instead of C02. For example, nitrogen (N2) or nitrous oxide (laughing gas, N20) are to be mentioned in this connection.

The receiving unit is preferably made substantially of plastic material and can especially be designed as an injection molded component. It can be made of other materials or material combinations if required to withstand particularly high pressures. Preferably, the receiving unit is configured in the form of a housing, in which the tapping element is accommodated. In particular, it can comprise a through-hole. In which through-hole, the tapping element can preferably be disposed to be movable in the longitudinal direction of the housing or the through-hole. In particular, the invention suggests that the tapping element is disposed to be sealingly movable relative to the receiving unit. The sealing can be achieved, for example, by means of an O-ring seal disposed between tapping element and receiving unit. According to another embodiment of the invention, the receiving unit comprises a thread which is located, in particular, in the through-hole and to which the propellant reservoir can be screwed. The propellant reservoir is preferably sealed with respect to the receiving unit. In particular, a shoulder can be formed in the through-hole for this purpose, on which the propellant reservoir sealingly rests when disposed as intended. The receiving unit can be in direct or indirect fluid communication with the pressure control unit.

The tapping element is preferably made of plastic material. On its side facing the propellant reservoir, a tapping tip is formed which is capable of piercing the propellant reservoir or a closure element provided at the propellant reservoir and introducing an outlet opening for propellant therein, through which propellant can flow out of the propellant reservoir. For this purpose, the tapping tip can be reinforced by a metal coating or similar reinforcement. The tapping element is linearly guided at or in the receiving unit, preferably in its through-hole, in the longitudinal direction thereof. For this purpose, the outer contour of the tapping element can correspond to the inner contour of the through-hole provided in the receiving unit. Advantageously, there is a slight clearance fit between tapping element and receiving unit so that the tapping element can be moved with sufficient guidance relative to the receiving unit in the longitudinal direction.

Particularly advantageously, the tapping element can be propellant-tightly sealed with respect to the receiving unit. In the case of a tapping element arranged in a through-hole of the receiving unit, a groove can be provided in the outer contour of the tapping element or the inner contour of the through-hole, in which a sealing element is arranged propellant-tightly sealing the gap present between tapping element and through-hole.

On the side opposite to the propellant reservoir, the tapping element can be directly or indirectly connected to the actuator to be operated on the user side. For this purpose, it can comprise a thread which cooperates with a corresponding counter thread at the actuator and which, upon rotation of the actuator, can cause a linear movement of the tapping element in the through-hole. The actuator is rotatable, but fixedly arranged in the longitudinal direction of the housing of the receiving unit, whereas the tapping element is arranged in or at the receiving unit in a torque proof but linearly movable manner. Alternatively, the actuator can be arranged by means of a thread, in particular by means of an internal thread at the receiving unit, in particular at the housing, whereas the tapping element is movably arranged in the longitudinal direction of the housing. In this case, tapping element and actuator are fixedly arranged relative to each other in the longitudinal direction, wherein the former is not required to include a thread for causing displacement thereof for tapping. For this purpose, an annular groove can be arranged at the tapping element which is engaged by a corresponding spring of the actuator, or vice versa.

The pressure control unit is arranged in the flow path of the propellant behind the receiving unit and serves the purpose of regulating the pressure from the high pressure of the propellant reservoir to the low pressure in the container. It is connected to the propellant reservoir on the high-pressure side and to the container on the low-pressure side, and it comprises transmission element, via which a high-pressure side outlet valve can be actuated as a function of pressure fluctuations on the low pressure side. The pressure prevailing the container can act on the transmission element via a flexible membrane sealing a low-pressure chamber. The amount of pressure and thus the position of the membrane determine the position of the transmission element, by which, in turn, the position of the outlet value is controlled. According to a specific embodiment, a rocker lever is provided as a transmission element. A low-pressure side lever arm of the rocker lever rests against the flexible membrane, whereas a high-pressure side lever arm actuates the outlet valve. The transmission element can advantageously be preloaded against the membrane, in particular the preload can be adjustable by an end-user, whereby the amount of pressure in the container adjustable via the pressure control unit can be determined. The outlet valve can be preloaded against the transmission element or the rocker lever via the pressure prevailing on the high-pressure side only. Advantageously, an arbitrary pressure spring serves as a preloading member.

The outlet valve preferably comprises a valve body especially made of plastic material which is sealingly arranged in the high-pressure line between receiving unit and pressure control unit. For this purpose, the high-pressure line can be expanded to form a valve chamber, in which the valve body is arranged to be movable between a closed position blocking the high-pressure line and an open position unblocking the high-pressure line. A valve body of particularly simple configuration can be used if the valve chamber is provided with a high-pressure inlet on the end side and with a side outlet. In this case, the valve body sealingly rests against the end-side inlet in the closed position and moves away therefrom to its open position during opening, in which it unblocks the side outlet. A surface of the valve body facing the inlet is designed as a sealing surface which sealingly closes the high-pressure inlet in the closed position.

Particularly advantageously, the membrane is fastened to the low-pressure chamber by clamping. In particular, it can be clamped to the pressure control unit via a clamping element, which is, in turn, fastened thereto by means of latching protrusions. This enables a particularly easy mounting of the membrane.

The pressure control unit can further comprise a pressure relief valve, by which a too high pressure load of the container is avoided. Particularly advantageously the pressure relief valve is in fluid communication with the low-pressure chamber and, in the case of overpressure, opens the chamber to the environment so that the overpressure can escape into the atmosphere and will not find its way into the container. Such a pressure relief valve can be realized in a particularly simple and safe way by providing the low-pressure chamber with an atmospheric outlet which is closed in a pressure-medium tight manner by a spring-loaded closure body of the pressure relief valve. If a too high pressure builds up in the low-pressure chamber, the closure body is lifted off from its valve seat against the spring load and unblocks the outlet opening so that the overpressure can be relieved.

The paint fluid is sprayed by means of a discharge device, especially by a spray gun. Particularly advantageously, the connecting line between pressure control unit and discharge device can be arranged to be detachable and rearrangeable at the fluid container by an end user via an adapter piece. Thus, the connecting line as well as the possibly present adapter piece and the discharge device can be easily cleaned in the case of a partial consumption of the paint fluid. A check or cut-off valve can be arranged in the connecting line or the adapter piece so that the container can be tightly closed prior to removing the discharge device and the connecting line, respectively, and the quality of the paint fluid remaining therein is degraded as little as possible. Even though the package according to the invention is a single-use package, multiple use in the form of a plurality of partial discharges is possible.

In a further embodiment, the single-use package comprises an attachment, at or in which the pressure control unit and/or the receiving unit is or are arranged. Further units can be arranged in or at the attachment. In particular, the spray gun or a similar device for discharging the paint fluid and the connecting line between the same and the pressure control unit can be positioned there. Thus, it is advantageously possible to provide containers for large amounts of paint fluid as a single-use package, wherein the container can be placed on the floor or a corresponding surface during spraying of the paint fluid and only the spray gun can be operated and handled in a simple way independently of the container and its weight. When spraying the paint fluid, it is not necessary to move the entire container including the paint fluid received therein which significantly facilitates spraying and discharging. The discharge device can be designed as a function of shape, size and material of the container. Thus, it can be adapted to the anatomy of the hand with a greater design freedom. It is preferably designed as an injection molded component so that it can be produced in the corresponding form and with light weight in a low-cost and simple manner.

According to another suggestion, the attachment can be advantageously designed as a plastic component, in particular as a plastic injection molded component. According to a further suggestion of the invention, it can be arranged at the connecting in a manner substantially non-detachable by the end-user. In this way, tightness, functionality and safety of the single-use package can be ensured. In particular, the attachment can be fastened to the container edge by means of latching elements, for example in the form of a clip connection. In addition or alternatively, fastening by means of gluing, welding, soldering or similar types of fastening is possible. Particularly advantageously, the container edge has a bead-shaped design or is provided with a seam. The attachment can be fixed to this bead or seam in an outwardly or inwardly overlapping manner by means of latching protrusions or clips. A further possibility of fixing the attachment to the container is to provide a container lid on the side of the container wall opposite to the container bottom. The container lid can be integrally formed with the container wall or can be pressure-tightly arranged thereon as a separate element in the known manner. The container lid is preferably made of the same material as the residual container. A filling hole can be provided in the center of the container lid, through which the container can be filled with paint fluid, on the one hand, and from which paint fluid can be removed from the container, on the other hand. Particularly advantageously, the filling hole can be used exclusively or in addition to the afore-mentioned fastening for fixing the attachment to the container edge on the container in the same or a similar way.

In a further embodiment, a riser pipe protruding into the container can be arranged at the attachment. It can be glued, inserted, screwed or connected to the attachment in a different way or can be formed integrally therewith. The riser pipe can preferably be connected fluidically tightly to the connecting line and can be adapted to take in paint fluid from an area as close to the bottom of the container as possible and to deliver it to the spray gun. Particularly advantageously, the container bottom can be arched so that a deepest point of the container is formed in the center or at the edge thereof. The riser pipe preferably ends in this deepest point or in the vicinity thereof so that the singleuse package can be emptied almost completely.

According to a further suggestion, the riser pipe can protrude through the filling hole into the storage volume. Alternatively, a separate opening can be provided in the container for the riser pipe. Between the riser pipe opening or filling hole, a sealing stopper, preferably made of rubber, can be arranged between the riser pipe and the edge of the container surrounding the opening, which stopper seals the interspace between riser pipe and opening edge in a fluid and pressure-tight manner. With respect to manufacture it is particularly reasonable to firmly arrange or connect the sealing stopper to the riser pipe. In particular, the sealing stopper can be adhered to or molded on the riser pipe. When the attachment is arranged as intended on the container, the riser pipe can thus be arranged in the container opening together with the sealing stopper in one operation. Likewise, the sealing stopper can be initially arranged as intended in the container opening and can be held therein by positive fit, non-positive fit, molding or gluing, if necessary. In this case, the riser pipe is inserted and possibly glued into the sealing stopper when arranging the attachment. Particularly advantageously, apart from delivering the paint fluid out of the container, the riser pipe concurrently performs the function of supplying the propellant into the storage volume.

Apart from its function as a closure of the container, the attachment closing the container can concurrently perform further functions, for example, carrying some or all of the units required for withdrawing the paint fluid, such as the pressure control unit, propellant reservoir, riser pipe, connecting line, discharge device and possibly provided safety and cut-off valves. The basic shape of the attachment can advantageously correspond to the basic shape of the container, it can especially be circular. Its lower edge can preferably be of slightly greater diameter than the edge of the container, at which the attachment is arranged. The attachment can then be arranged on or at the container in a manner encompassing the container edge. The attachment preferably forms, together with the container, a shape which is easy to stack and handle. In the case of a cylindrical or barrel-shaped container, the entire single-use package may be cylindrical or barrel-shaped, whereby good stackability can be achieved. On the side facing away from the container, the attachment can comprise a recess or groove on the outer or inner face. This recess or groove preferably runs annularly around the attachment. The width and depth of the groove can be adapted to the length of the connecting line so that it can be accommodated in the recess or groove in a space saving manner and is largely protected from damage. A receptacle for the discharge device arranged at the connecting line can be formed in or at the attachment. The discharge device can be held therein preferably by clamping or positive fit or by means of releasable holding elements.

For facilitating the transport of the single-use package according to the invention and for improving handleability thereof, one or more handles can be provided at the attachment. They are preferably formed on the side facing away from the container or front face of the attachment. A design in the form of circular segment-shaped handles is particularly advantageous, since a boundary, which is circumferential at least in certain areas, can then be formed on the side of the attachment facing away from the container. Particularly advantageously, the handle(s) is/are arranged in parallel with the container bottom in a circular or circular segment-shaped manner so that the basic structure of the single-use package consisting of attachment and container is substantially cylindrical so that the single-use package according to the invention is particularly easy to stack, store and transport. Alternatively, a handle can be retractably arranged in the attachment so that it can be brought from this retracted idle position to an extended transport position protruding away from the attachment by a user.

The invention further suggests a method for pressurizing a single-use package, in particular a single-use paint package. The single-use package comprises a container forming a storage volume for paint fluid, and a pressure control unit connected to a propellant reservoir. The propellant reservoir is disposed at a receiving unit of the single-use package in a propellant-tightly closed manner and is tapped by means of a tapping element which can be positioned relative to the receiving unit, by moving the tapping element towards the propellant reservoir via user-side operation of an actuator, and sealing the propellant reservoir in a propellant-tight manner by means of a sealing portion. The tapping element is then moved away from the propellant reservoir, thereby clearing an outlet opening for propellant for pressurizing the container. Sealing of the propellant reservoir can be achieved especially due to the fact that, subsequent to tapping, the sealing portion rests against the propellant reservoir, wherein the outlet opening is cleared as the sealing portion is disengaged from the propellant reservoir. A high safety standard can be realized by the method according to the invention. The single-use package can be provided to the end user as a completely assembled und filled unit and can be activated, i.e. the container can be pressurized, shortly before use. The use of customary gas cartridges enables a safe long-term storage of propellant. For activation, the actuator is operated on the user side, thereby initially tapping the propellant reservoir only. However, the outlet opening introduced into the propellant reservoir is still sealed by the sealing portion of the tapping element so that propellant cannot flow out and the paint fluid container is not yet pressurized. Only by moving the tapping element away from the propellant reservoir, the sealing portion is disengaged from the outlet opening clearing the same so that propellant can flow into the paint fluid container pressuring the same. Clearing of the outlet opening can preferably be achieved by a further operation of the actuator. This further operation is advantageously opposite to the first operation for tapping the propellant reservoir. The additionally required clearing of the outlet opening constitutes an advantageous and safety-providing function, since the possibility of inadvertent pressurization of the container can almost safely be avoided.

Furthermore, the tapping element can be brought to a position sealing the outlet opening by repeated operation of the actuator. Thereby, the propellant reservoir can be closed in a propellant-tight manner, especially after a partial consumption of paint fluid. For intermediate storage of the single-use package, the pressure in the container can then be reduced, for example, by venting. Discharge device and connecting line can be cleaned, if necessary, without having to use a new propellant reservoir for a further use of the opened singleuse package.

Further features and details are apparent from the following non-limiting description of the Figures, in which:

Figure 1 shows a single-use package in a sectional side view;

Figure 2 shows an attachment of a single-use package in a first sectional view;

Figure 3 shows an attachment of a single-use package in a second sectional view;

Figure 4 shows an attachment of a single-use package in a third sectional view;

Figure 5 (a, b, c) shows an attachment of a single-use package in a fourth sectional view including two enlarged detailed views;

Figure 6 shows an attachment in a perspective view;

Figure 7 shows the attachment of Figure 6 with extended handle;

Figure 8 shows a top view of an attachment of the single-use package provided with a cover; and

Figure 9 (a, b, c) shows the high-pressure cut-off valve shown in Figure 3 in various functional positions in an enlarged view.

Figure 1 shows a single-use package 1 with container 2 and attachment 3 in a sectional side view. The container 2 comprises a substantially circular container bottom 4 and a container wall 5 connected thereto. In its inner area, the container bottom 4 is arched towards the container interior. In this way, the outer edge 6 of the container bottom 4 forms an annular base, on which the single-use package 1 can safely and stably stand. The outer edge 6 comprises an outwardly flanged seam 7 extending towards the container wall 5, in which the lower edge of the bottom 4 is received in a fluid and pressure-tight manner. A container lid 10 is arranged on the side of the container wall 5 opposite to the container bottom 4. This container lid, as well as the container bottom 4, is arched in its inner area towards the container interior so that a circumferential lid edge 11 is formed. Similar to the container bottom 4, the container lid 10 is fluid and pressure-tightly connected to the upper seam 9 of the container wall 5 by flanging. The circumferential lid edge 11 forms a base, on which the container 2 can stand and be stored as a semi-finished product (without attachment 3) or for filling by means of a filling lance. Particularly advantageously, the shapes of the container bottom 4 and the outer edge 6 are adapted to the shapes of the container lid 10 and the lid edge 11 so that container bottom 4 and container lid 10 of two containers 2 stacked on top of each other can engage into and, in part, around each other so that the containers 2 are particular easy to stack, store and transport as semi-finished products. A filling hole 13 is provided in the center of the container lid 10. A riser pipe 18, which is either molded or sealingly connected directly to a base body 14 of the attachment 3, described in greater detail in the following, protrudes through the filling hole 13 into the container 2. The length of the riser pipe 18 is sized such that its open lower riser pipe end 19 terminates in a trough-like recess 20 of the container bottom 4. In this way it is ensured that paint fluid taken-in in the container 2 via the riser pipe 18 can be removed substantially completely and without leaving a residue. The sealing between riser pipe 18 and container lid 10 is achieved via a stopper 23 inserted into the filling hole 13 and surrounding the riser pipe 18 in a fluid and pressure-tight manner.

The attachment 3 for the single-use package 1 is shown in various sectional views in Figures 2, 3 and 4, and in perspective views in Figures 5 and 6. It has a base body 14. When the attachment 3 is arranged as intended, this base body, on the side facing the container 2 (as shown in Figure 1), is e.g. circular in shape corresponding the shape of the container and comprises an annular end edge 15, the internal diameter of which is slightly greater than the outer diameter of the upper lid edge 11 so that it can encompass the container 2. Latching elements 12 are formed in the area of the end edge 15, which latching elements can engage corresponding counter-latching structures on the container 2 and which latch therewith so that the attachment 3 is safely and stably arranged at the container 2.

For discharging paint fluid, the riser pipe 18 is to be connected to a line 24. Paint fluid sucked in from the container interior via the riser pipe 18 is then conducted through the line 24 towards the spray gun 25 as the discharge device. It is shown in the Figures that the line 24 is coiled in a recess 26 formed on the outside of the base body 14 of the attachment 3 for transport and storage purposes. It can be uncoiled for spraying the paint fluid and is then to be connected to the riser pipe 18, on the one hand, and to the spray gun 25, on the other hand, in a manner described later on. A handle element 27 is formed on the side of the attachment 3 opposite to the annular end edge 15. As is apparent especially from Figures 5 and 6, the handle element is movably mounted relative to the attachment 3 at its base body 14 so that it can be transferred from an idle position (shown in Figures 1 to 5), in which it substantially flush with the top side of the attachment 3, to an extended transport position shown in Figure 6. A recess 31 is provided in the base body 14 of the attachment 3 so that a user can simply grasp the handle element 27 when in the idle position. Since the handle element 27 is flush with the top side of the attachment 3 in its idle position, a plurality of single-use packages 1 can be easily and stably stacked on top of each other.

For protection during transport a cover element 32 is placed over the attachment 3. This cover element comprises a recess 16, though which the handle element 27 can be grasped and transferred to the transport position. The outer periphery of the cover element 32 is advantageously slightly smaller than the inner diameter of the outer edge 6 of the container bottom 4 so that, when a plurality of packages is stacked, the outer edge 6 of an upper single-use package can encompass the cover element 32 of a lower single-use package so that a particular stable footing is achieved.

The spray gun 25 is designed in the form of a plastic injection molded component, as a single-use spray gun. It comprises a cut-off valve, which is not shown in the Figures and is operated by a handle. For spraying the paint fluid received in the container 2, the container interior is pressurized via the pressure control valve 30 by means of C02, as the propellant, from a C02 pressure cartridge 29, as the propellant reservoir, so that the desired and largely constant internal pressure is guaranteed for removal. When the cut-off valve is opened by operating the spray gun 25, paint fluid contained in the container 2 under overpressure is sprayed out through the riser pipe 18, the line 24 and the spray gun 25. The spray gun 25 is arranged in a recess formed in the base body 14 and is held therein by means of a not shown clamping device.

As is apparent especially from Figures 2, 3 and 4, the C02 pressure cartridge 29 is screwed to a receiving element 33 which is fastened to the base body 14 of the attachment 3 by means of screw connections 21 or a clip connection. For fastening to the receiving element, the C02 pressure cartridge 29 comprises an external thread 34 formed at its neck area. The receiving element 33 comprises a corresponding internal thread 22 which is arranged in an expanded area 35 of a through-hole 36 protruding through the receiving element 33 in the longitudinal direction thereof. At its end facing away from the C02 pressure cartridge 29, the expanded area 35 terminates in a shoulder 37. The end of the C02 pressure cartridge 29 sealing rests against the shoulder 37, a sealing element 8 being interposed in between.

On the side of the through-hole 36 opposite to the shoulder 37, the through-hole is formed with a reduced diameter relative to the expanded area 35. There, the inner contour of the through-hole forms a guiding area 38 for a tapping element 39 arranged in the through-hole 36. A further shoulder 40 is arranged at the end of the through-hole 36 opposite to expanded area 35 serving as an end stop for the tapping element 39.

The tapping element 39 is substantially cylindrical in shape and comprises a tapping tip 42 at its end facing the C02 pressure cartridge 29. It further comprises a guiding area 43 matching the guiding area 38 of through-hole 36 with slight tolerance. A groove 41, in which an O-sealing ring 28 is positioned, is provided in the tapping element 39, approximately in the center of the guiding area 43. This O-sealing ring forms a propellant-tight seal between tapping element 39 and guiding area 38. At the end opposite to the tapping tip 42, the tapping element 39 is provided with a connecting projection 44. This connecting projection is reduced in diameter relative to the guiding area 43 so that a shoulder 45 is formed which, in turn, together with shoulder 40, prevents the tapping element 39 from falling out of the through-hole 36. The tapping element 39 further comprises a sealing area 48 which, when the tapping element 39 is displaced towards the C02 pressure cartridge, sealingly rests against the cartridge and prevents propellant from escaping from the outlet opening 49 pierced by the tapping tip. In particular, the sealing area 48 is designed in the form of a planar sealing surface which sealingly rests against the C02 pressure cartridge 29 when the tapping element 39 is accordingly positioned.

At its end opposite to the C02 pressure cartridge 29, the receiving element 33 comprises an external thread 46 cooperating with a corresponding internal thread of a rotary knob 47 as an actuator. The rotary knob 47 can be moved, by rotation, relative to the receiving element 33 in the longitudinal direction thereof. Furthermore, it is connected to the connecting projection 44 of the tapping element 39 so that the same can be displaced in the longitudinal direction of the through-hole 36 upon operation thereof. When the rotary knob 47 is rotated in a first direction, the tapping element 39 is displaced towards the C02 pressure cartridge 29 so that the cartridge is pierced by the tapping tip. Without further operation of the rotary knob 47, the tapping element 39 remains in the position piercing the cartridge. The outlet opening 49 introduced into the cartridge by the tapping tip 42 is propellant-tightly sealed by the sealing area 48 so that propellant can initially not escape from the C02 pressure cartridge 29. When rotated in the opposite direction, the tapping tip is then moved away from the C02 pressure cartridge 29, wherein the sealing area 48 is disengaged therefrom and the outlet opening 49 is cleared. After clearing, propellant from the C02 pressure cartridge 29 can enter the chamber 50 which is formed when the tapping element 39 is moved backwards. This chamber is connected to the pressure control valve 30 via a passage not shown in the Figures. By repeated operation of the rotary knob 47, the tapping element 39 can be moved back towards the C02 pressure cartridge 29 so that its sealing area 48 again comes into sealing contact and seals the outlet opening 49 in a propellant-tight manner.

The pressure control valve 30 is shown clearly visible in Figure 3. It comprises a rocker lever 51, a high-pressure chamber 52, a low-pressure chamber 53, a cutoff valve body 54, a propellant passage 55 as a high-pressure line, a pressure spring 56 and an elastic membrane 57. The chamber 50 formed in the receiving element 33 is connected to the high-pressure chamber 52 via the not shown passage. The high pressure chamber is, in turn, connected to the low-pressure chamber 53 via the propellant passage 55. A high-pressure cut-off valve including the cut-off valve body 54, via which the propellant passage 55 can be closed, is arranged in the propellant passage 55. The high-pressure cut-off valve is schematically illustrated in Figures 9a to c. The cut-off valve body 54 is arranged in the propellant passage 55, which is expanded to form a valve chamber 69, is guided by the wall of the valve chamber and can be displaced between a closed position (Figure 9a) cutting off the passage and an open position (Figure 9b). The valve body is provided with a circumferential groove 67 in which an O-sealing ring 68 is arranged which provides a seal between the cut-off valve body 54 and the wall of the valve chamber 69. On its front face, the cut-off valve body 54 is provided with a valve-seat seal 70 which, in the closed position, sealingly overlies the propellant passage 55 opening into the valve chamber 69. On its side opposite to the valve seat seal 70, the cut-off valve body 54 is formed with a rounded head 71 which, as shown e.g. in Figure 3, rests against the rocker lever 51. In the open position, the cut-off valve body 54 is displaced towards the rocker lever 51, thereby releasing the valve-seat seal 70 from the sealing position. The portion of the propellant passage 55 connecting the valve chamber 69 to the low-pressure chamber 53 is cleared by the cut-off valve body 54 in the open position so that propellant can flow from the C02 pressure cartridge 29 into the low-pressure chamber 53. When accordingly released by the rocker lever 51, as described below, the cut-off valve body is brought from the closed position to the open position by means of the high pressure in the C02 pressure cartridge 29 acting on the valve-seat seal 70. The reversed closing procedure is caused by a corresponding preloading of the rocker lever 51.

The low-pressure chamber 53 of the pressure control valve 30 is closed by the elastic membrane 57 on one side and is connected to the container 2 via a propellant outlet 58 and to the valve chamber 69 via the propellant passage 55. The rocker lever 51 is mounted pivotally around a pivot joint 60, contacts the head of the cut-off valve body 54 with a high-pressure side lever arm 59 and contacts the elastic membrane 57 with a low-pressure side lever arm 61. The low-pressure side lever arm 61 is further preloaded towards the membrane 57 via the pressure spring 56. The elastic membrane 57 is clampingly held between a clamping ring 62 and the base body 14. The clamping ring 62 is fastened to the base body 14 via latching elements 17.

Due to the connection to the container 2, the internal pressure present therein prevails in the low-pressure chamber 53. As is immediately apparent from Figure 3, an equilibrium of forces arises at the rocker lever 51, wherein the force exerted by the pressure spring 56 and the high pressure in the high-pressure chamber 52 acting on the cross-sectional area of the cut-off valve-body 54 counteract the internal pressure of the low-pressure chamber 53 (corresponding to the pressure in the container 2) acting on the membrane 57. This equilibrium is set such that, in the equilibrium case, the pressure desired for discharging (spraying) the paint fluid prevails in the low-pressure chamber 53 and in the container 2. When the pressure in the container and in the low-pressure chamber decreases during discharge, the rocker lever 51 is pivoted (counterclockwise in the illustration of Figure 3) due to the arising disequilibrium of forces. The high-pressure side lever arm 59 moves away from the cut-off valve body 54 so that it moves out of its closed position due to the pressure in the high-pressure chamber 52 and clears the propellant passage 55. Highly pressurized propellant from the high-pressure chamber 52 can then flow through the propellant passage 55 into the low-pressure chamber 53 and from there into the container 2 via the propellant outlet 58, thereby re-establishing the equilibrium of forces at the rocker lever 51. The higher the pressure again rises in the low-pressure chamber 53, the more the rocker lever returns to its starting position, wherein the cut-off valve body 54 moves from the position clearing the propellant passage 55 back to its closed position.

An outlet passage 63 is formed in the base body 14. A protrusion 64 of the base body 14 protrudes through the filling hole 13 present in the container lid 10 into the container 2. The riser pipe 18 forms an extension of the protrusion 64. An adapter piece 65 is inserted into the outlet passage 63 at the end thereof opposite to the riser pipe 18, which adapter piece, on its side opposite to the outlet passage 63, is provided which a connector 66 which can be connected to line 24 (see Figure 3). Instead of the adapter piece inserted directly into the outlet passage 63, the adapter piece 65 shown in Figures 5a and 5c can be used which is inserted into a cut-off valve 71. Thus, line 24 can be dismounted together with the spray gun 25, e.g. for cleaning or transport purposes, without the possibility of polluting the paint fluid still remaining in the container 2. The cut-off valve 71 substantially comprises a valve body 77, in which a valve seat 72 is formed, which can be sealed by means of a cut-off element 73 in a paint fluid-tight manner, and a cut-off element 73. The cut-off element 73 is screwed into the valve body 77 by means of an external thread 76 and can be positioned with respect thereto via the thread. Furthermore, the cut-off element 73 is hollow and includes a through-hole 74, in the end side of which the adapter piece 65 is, in turn, accommodated. When the cut-off valve 71 is closed, i.e. when the cut-off element 73 is completely screwed into the valve body 77, the valve seat 72 is closed by means of a seat seal 75. By unscrewing, the valve seat 72 is opened by disengaging the seat seal 75 and paint fluid can flow through the through-hole 74 and the adapter piece 65 towards line 24. A pressure relief valve 78 is shown in Figures 5a and 5b which is supposed to prevent overloading of the container 2 caused by too high pressure. The pressure relief valve 78 closes an outlet 79, via which the low-pressure chamber 53 is connected to the environment. It substantially consists of a valve body 81 provided with a seal 80, a pressure spring 82 and a base body 83. The latter is fixedly arranged at the base body 14. A pressure spring 82 preloads the valve body 81 with the seal 80 relative to the base body 83 towards the outlet 79 so that the seal 80 closes the same in a pressure medium-tight manner. When the pressure in the low-pressure chamber 53 rises to a too high value, the valve body 81 is lifted off from the outlet 79 via the seal 80 against the preloading of the pressure spring 82 so that pressure medium can escape from the low-pressure chamber 53 into the environment and overloading of the container 2 is avoided. When the overpressure has escaped and the desired pressure has been achieved in the low-pressure chamber 53 and the container 2, the pressure relief valve 78 closes automatically due to the action of the pressure spring 82.

List of reference numerals 1 single-use package 2 container 3 attachment 4 container bottom 5 container wall 6 outer edge 7 seam 8 sealing element 9 seam (top) 10 container lid 11 lid edge 12 latching element 13 filling hole 14 base body 15 end edge 16 recess (in 32) 17 latching element 18 riser pipe 19 riser pipe end 20 trough-like recess 21 screw connection 22 internal thread 23 stopper 24 line 25 spray gun 26 recess 27 handle element 28 O-sealing ring 29 C02 pressure cartridge 30 pressure control valve 31 recess (in 14) 32 cover element 33 receiving unit 34 external thread 35 expanded area 36 through-hole 37 shoulder 38 guiding area 39 tapping element 40 shoulder 41 groove 42 tapping tip 43 guiding area 44 connecting protrusion 45 shoulder 46 external thread 47 rotary knob 48 sealing portion 49 outlet opening 50 chamber 51 rocker lever 52 high-pressure chamber 53 low-pressure chamber 54 cut-off valve body 55 propellant passage 56 pressure spring 57 membrane 58 propellant outlet 59 high-pressure side lever arm 60 pivot joint 61 low-pressure side lever arm 62 clamping ring 63 outlet passage 64 protrusion 65 adapter piece 66 connector 67 groove 68 O-sealing ring 69 valve chamber 70 valve seat seal 71 cut-off valve 72 valve seat 73 cut-off element 74 through-hole 75 seat seal 76 77 valve body 78 pressure relief valve 79 outlet 80 seal 81 valve body 82 pressure spring 83 base body

Claims

1. Engangsbeholder (1), især engangsfarvebeholder til optagelse og fordeling af et farvefluidum ved sprøjtning, og som har en beholder (2), som udgør et lagervolumen for varmefluidet, og en trykreguleringsenhed (30), som kan forbindes med et drivmiddelreservoir (29), og hvor drivmiddelreservoiret (29) er indrettet til eller kan indrettes ved en modtageenhed (33) i engangsbeholderen, og hvor et tappeorgan (39) til tapning fra drivmiddelreservoiret (29) kan positioneres i forhold til modtageenheden (33), idet tappeorganet (39) kan bevæges ved hjælp af et på en brugerside anbragt indstillingsorgan (47), kendetegnet ved, at tappeorganet (39) har et tætningsafsnit (48), hvormed en udgangsåbning (49), som er blevet anbragt i drivmiddelreser-voiret (29) ved hjælp af tappeorganet (39), kan tætnes.A disposable container (1), in particular disposable ink container for receiving and distributing a color fluid upon spraying, having a container (2) constituting a storage volume for the heat fluid and a pressure control unit (30) connectable to a propellant reservoir (29 ), and wherein the fuel reservoir (29) is arranged to or can be arranged at a receiving unit (33) in the disposable container, and where a tapping means (39) for tapping from the fuel reservoir (29) can be positioned relative to the receiving unit (33), the tapping means ( 39) can be moved by means of a setting means (47) arranged on a user side, characterized in that the tapping means (39) has a sealing section (48), through which an outlet opening (49) has been arranged in the fuel reservoir (29). can be sealed by means of the tapping means (39).

2. Engangsbeholder ifølge krav 1, kendetegnet ved, at modtageenheden (33) har en gennemgangsåbning (36), hvori tappeorganet (39) er indrettet til at kunne bevæges i sin længderetning, og især er indrettet til at være tætnende og bevægeligt i forhold til modtageenheden (33).Disposable container according to claim 1, characterized in that the receiving unit (33) has a passage opening (36) in which the tapping means (39) is arranged to be movable in its longitudinal direction, and in particular is arranged to be sealing and movable in relation to the receiving unit (33).

3. Engangsbeholder ifølge krav 2, kendetegnet ved, at modtageenheden (33) har et gevind (22), på hvilket drivmiddelreservoiret (29) er skruet eller kan påskrues.Disposable container according to claim 2, characterized in that the receiving unit (33) has a thread (22) on which the propellant reservoir (29) is screwed or screwed on.

4. Engangsbeholder ifølge krav 2 eller 3, kendetegnet ved, at gennemgangsåbningen (36) har en skulder (37), mod hvilken drivmiddelreservoiret (29) på tæt måde kan ligge an, når anbringelsen er som bestemt.Disposable container according to claim 2 or 3, characterized in that the passage opening (36) has a shoulder (37) against which the propellant reservoir (29) can be in close contact when the arrangement is as determined.

5. Engangsbeholder ifølge et af de foregående krav, kendetegnet ved, at indstillingsorganet (47) har et gevind og er forbundet med tappeorganet (39), så at sidstnævnte via en aktivering, især en dreje-aktivering af indstillingsorganet (47) kan bevæges i forhold til modtageenheden (33).Disposable container according to one of the preceding claims, characterized in that the adjusting means (47) has a thread and is connected to the tapping means (39) so that the latter can be moved via an actuation, in particular a turning actuation of the adjusting means (47). relationship with the receiving unit (33).

6. Engangsbeholder ifølge et af de foregående krav, kendetegnet ved, at modtageenheden (33) strømningsteknisk er forbundet med trykreguleringsenheden (30).Disposable container according to one of the preceding claims, characterized in that the receiving unit (33) is technically connected to the flow control unit (30).

7. Engangsbeholder ifølge et af de foregående krav, kendetegnet ved, at den har en fastgørelsesdel (3), ved hvilken trykreguleringsenheden (30) og/eller modtageenheden (33) er anordnet.Disposable container according to one of the preceding claims, characterized in that it has a fastening part (3) at which the pressure control unit (30) and / or the receiver unit (33) are arranged.

8. Engangsbeholder ifølge krav 7, kendetegnet ved, at fastgørelsesdelen (3) er fastgjort på tætnende måde, især ved hjælp af indrastningsorganer (17) eller en clipforbindelse på en beholderrand på beholderen (3).Disposable container according to claim 7, characterized in that the fastening part (3) is sealed in a sealing manner, in particular by means of engaging means (17) or a clip connection on a container edge of the container (3).

9. Fremgangsmåde til trykpåvirkning af en engangsbeholder (1), især engangsfarvebeholder, og en beholder (2) med et lagervolumen til farvevæske og en trykreguleringsenhed (30), er forbundet med eller forbindes med et drivmiddelreservoir (29), og hvor drivmiddelreservoiret (29) - drivmiddeltæt og lukket - er anbragt eller anbringes ved en modtageenhed (33) i engangsbeholderen, og dette ved hjælp af et i forhold til modtageenheden (33) positionerbart tappeorgan (39), idet tappeorganet (39) bevæges ved hjælp af en brugeraktivering, især en drejeaktivering af et indstillingsorgan (47) i retning af drivmiddelreservoiret (29), og ved hjælp af et tætningsafsnit (48) - drivmiddeltæt tætner drivmiddelreservoiret (29) efter foretaget tapning, og hvor tappeorganet (39) efterfølgende bevæges hurtigt af drivmiddelreservoiret (29), hvorved en udgangsåbning (49) for drivmiddel til trykpåvirkning af beholderen (2) frigives.A method of applying pressure to a disposable container (1), in particular disposable ink container, and a container (2) having a storage volume for color liquid and a pressure control unit (30), is connected to or connected to a propellant reservoir (29) and wherein the propellant reservoir (29 ) - propellant tight and closed - is arranged or disposed at a receiving unit (33) in the disposable container and this by means of a tapping member (39) positionable relative to the receiving unit (33), the tapping means (39) being moved by a user actuation, in particular, a turning actuation of an adjusting means (47) in the direction of the fuel reservoir (29), and by means of a sealing section (48) - the fuel seal seals the fuel reservoir (29) after tapping, and the tapping means (39) is subsequently moved rapidly by the fuel reservoir (29). ), thereby releasing an outlet port (49) for propellant for pressurizing the container (2).

10. Fremgangsmåde ifølge krav 9, kendetegnet ved, at tappeorganet (39) ved en aktivering af indstillingsorganet (47) hurtigt kan bevæges væk fra drivmiddelreservoiret (29).Method according to claim 9, characterized in that, by activating the adjusting means (47), the tapping means (39) can be moved quickly away from the fuel reservoir (29).

11. Fremgangsmåde ifølge krav 9 eller 10, kendetegnet ved, at tappeorganet (39) ved gentagen aktivering af indstillingsorganet (47) bringes hen i en stilling, som tætner udgangsåbningen (49) i drivmiddelreservoiret (29).Method according to claim 9 or 10, characterized in that, by repeatedly activating the adjusting means (47), the tapping means (39) is brought into a position which seals the outlet opening (49) in the fuel reservoir (29).

12. Anvendelse af en beholder ifølge et af kravene 1 til 8 til farve, lak, lasur, træbeskyttelsesmiddel og lignende fluider.Use of a container according to any one of claims 1 to 8 for color, varnish, lacquer, wood preservative and similar fluids.