DE102016100867B4 - Container for liquids with a ventilation device and method for emptying the same - Google Patents

Abstract

Container (1) for liquids with a ventilation device (8), at least consisting of a vessel, a filling and / or emptying nozzle (5), and a ventilation device (8), which is an automatically opening and closing non-return valve, consisting of a molded part (12) with a coaxially arranged bore (13), a formed in the bore (13) sealing collar and in the bore (13) arranged sealing body (14), characterized in that the molded part (12) and / or the sealing body (14) of the backflow preventer are magnetic and the sealing body (14) is held by magnetic force in the closed position.

Description

The invention relates to containers for liquids having an additional aeration device. It also relates to the method of emptying these containers.

Are known containers for liquids in the form of bottles, barrels, film bags, canisters or the like. At least containers with small volumes are tilted for the purpose of emptying and taken over the combined filling or pouring the required liquid.

It is well known that the emptying of said containers requires considerable attention. At least when the container is tilted so much that the liquid level present in the container is above the upper edge of the combined filling or pouring aperture, sporadic air suction occurs over the pouring aperture, which generally manifests itself as bubbling during the pouring operation. The emerging liquid jet is not stable, can not be safely controlled and it is difficult to avoid spilling liquid.

This problem is generally known, for example, with fuel canisters. If a motor vehicle refueled from canisters, it is hardly possible to do this without spilling fuel.

It is known that pouring aids can be mounted on the pouring opening of canisters. These are usually designed with 2 channels, which have different cross sections. When emptying a canister with such a pouring aid, an inwardly directed air flow normally sets in the channel with the smaller cross section, while the fuel runs out through the channel with the larger cross section. At least at the beginning of emptying the pouring aid must be quickly inserted into the filling opening of the vehicle tank. Otherwise it can also lead to splashing of the liquid due to surge and blistering.

In order to avoid the above-mentioned disadvantages, it has already been proposed to arrange a separate ventilation on the containers and thus to separate the outflow of the liquid and the inflow of outside air from each other.

In DE 297 16 183 U1 a ventilation device is proposed which provides to introduce a bore in a gas canister in the upper region, to arrange a perforated plate above this and with the aid of a thumbscrew and sealing material to close the holes in the perforated plate or to open if necessary. A disadvantage of this solution is that it does not necessarily open at negative pressure in the interior of the container. If the ventilation device remains closed when pouring out the liquid, it does not work. A further disadvantage is that when filling the container and an open ventilation device can escape via this liquid. Finally, the knurled screw can be lost, so that the container is at least temporarily unusable.

In DE 20 2010 003 444 U1 It is therefore proposed to provide signal elements both at the filling opening of the container and at the aeration device in order to be able to recognize the respective state of both. The signal element should also serve as a guarantee element for the integrity of the container and the container contents. For this purpose, such an element is also provided at the filling and / or pouring opening. For the vent, a valve is proposed, which acts as a check valve. Due to the guarantee element, it can not be ruled out that the tank will be filled or emptied when the ventilation system is closed.

In DE 10 2010 020 799 A1 An embodiment is described for a vent valve that is to be used in liquid containers. It is a body with a hole that provides access to the container interior. This hole is closed by a ball, the closure is made by the weight of the ball. The ball is also inside a cage, which means that it can perform only limited movement and, above all, is captive.

In DE 90 15 132 U1 solutions are described for the ventilation of containers for the application of liquids, suspensions or creams. A first solution should be designed with a closure that should be integrated as a simple component in the bottom surface of the container. Since the container is a so-called dispenser, an overpressure is generated by means of a pump device of the dispenser before removal from the container, through which the closure is opened, the pressure is equalized and then the closure automatically closes again.

Another embodiment is intended to realize the closure with a rod which is connected to the pumping device, so that the pumping device at the same time moves the rod when removing the container contents. The rod in turn has at its end a taper of the diameter through which the container interior is ventilated.

It is therefore an object of the invention to provide a container for liquids with a Ventilation device, which is designed as a backflow preventer to develop so that the backflow preventer used opens or closes even at low pressure differences between container interior and atmosphere, is easy and simple to manufacture, inexpensive and can be integrated into the container and acts without additional measures when emptying the container , It is a further object of the invention to propose the procedure to be carried out when emptying the container according to the invention.

This object above is achieved with a container for liquids with the features of the characterizing part of claim 1 in conjunction with the features of the preamble of this claim. The above object is further achieved with a method for emptying containers for liquids according to claim 5. Second and subordinate claims describe embodiments of the container according to the invention for liquids or the method for emptying.

In the following description, embodiments and claims, the following terms are used with the following meaning:
Container - is a three-dimensional hollow vessel for holding liquids.
Vessel - is a hollow body with an outer wall made of liquid-tight materials, which has both a filling and outlet opening and one of these spatially separated ventilation device.
Ventilation device - is a structural unit designed to allow pressure equalization inside the container when pouring out the liquid in the container.

According to the invention, a container with a filling and discharge opening and spatially separated therefrom is carried out with a ventilation device in the form of a non-return valve.

Depending on the geometric shape of the container, the non-return valve is preferably arranged in a region which is already filled with gas during storage of the container or in the region of which a volume of gas forms during tilting and emptying.

The non-return valve makes it possible, according to the invention, to compensate for the negative pressure created during the emptying of the container by allowing the subsequent flow of air.

In order for the liquid to be removed from the container can be poured evenly and without bubbling or Schwallbildung.

The container according to the invention may be a three-dimensional vessel of any type. It must be liquid-tight with regard to its use. Thus, it may be a keg, a bottle, a foil bag, a glass balloon, a canister or the like.

For the effect according to the invention, it is advantageous if the container has a three-dimensional shape which, at least when emptying the container, forms a gas-filled partial volume within the container volume and if the ventilation device is arranged in this region. If necessary, it may be necessary to turn it before emptying the container so that during the subsequent tilting process, the ventilation device is positioned accordingly.

A preferred design of the container is that of a canister, particularly preferably the design of a fuel can in the known cuboid design. It has a higher bulge either on the side opposite the filling or outlet opening, or an existing carrying handle is at the same time part of the container interior.

The non-return valve according to the invention has the effect that it opens at a negative pressure in the container interior and establishes a connection to the outside air. Typically, such a negative pressure arises especially when pouring liquids.

The backflow preventer acts as a check valve, that is, it can only get into the container interior air. In case of internal overpressure it is always closed.

A preferred embodiment of the non-return valve is constructed similar to a check valve. It consists of a molded part, which is adapted in its outer contour to the conditions, in particular to the geometric conditions and the wall thicknesses of the vessels. The molding has approximately concentrically arranged a stepped bore. Towards the outside air, the bore diameter is smaller than toward the container interior.

The step in the bore also serves as a support (sealing collar) for the sealing body arranged in the bore.

A particularly preferred embodiment of the molded part has in the region of the inner end of the stepped bore precautions against unintentional falling out of the sealing body. This can also be built-in security elements or material uniformly molded from the molding elements that protrude into the hole.

Another embodiment of the molding has at the rear end of the stepped bore elements that can hold a spring coil. In this embodiment of the non-return valve can be used as a sealing body, a ball, a cylindrical or a plate-shaped part, each supported on a compression spring and held by this in the closed position.

In this embodiment of the non-return valve, a magnetic or magnetizable part is used at least for the region of the molded part in which the sealing collar is formed. The sealing body in turn is also magnetic or magnetizable. It is sufficient if one of the two parts is permanently magnetic and the other one consists of a ferromagnetic material. In this design of the non-return valve, the sealing body is held by the ever-present magnetic forces on the sealing collar and only a sufficiently large, acting from the outside on the sealing body force, it can stand out from the sealing collar.

If the molding itself can not be made of magnetic materials, it is possible to install in the same on the outwardly facing end face an additional plate of magnetic material.

A preferred embodiment of the non-return valve is used in particular in vessels (canisters) with molded carrying handles use. In addition to the backflow preventer one of the designs described above, an actuating element in the bore and a handle are arranged in the region of the handle. The handle is hinged to the vessel and is supported at its opposite end on the actuator. The actuator is supported at the same time on the sealing body. In the initial position, the handle is slightly raised, so that the person using the container or a mechanical device can open the backflow preventer by operating the handle. In this embodiment of the non-return valve, the difference between closing force and opening force may be greater than in the above-described designs.

The inventive method for emptying the container according to the invention for liquids uses the container described above.

According to the invention, the container standing on a solid base is first opened. That is, a closure located on the fill or outlet port is opened or removed.

Optionally, the container may be transported prior to opening, lifted to a higher working position or received by a person.

A likewise optional work step may be that a pouring aid is placed on the filling or outlet opening.

Subsequently, the opened container is tilted, so that the liquid level of the liquid contained therein reaches the edge of the filling or outlet opening and the liquid runs out.

Thereafter, the container may be further tilted and the liquid level may be higher than the top of the fill or outlet opening, the liquid flowing in a uniform stream from the container.

This is made possible by an interaction between container, liquid and non-return valve. By tilting the container and pouring out of the liquid, a residual volume filled with gas forms and in this a negative pressure. At the same time created by the pending external air pressure, a force acting on the sealing body of the backflow preventer and lifts it from the sealing seat. This results in a pressure equalization between outside air and container interior. The jet of liquid remains uniform and it can be well controlled at least in the free transfer or partial removal of liquid even with freehand holding the container.

In another embodiment of the method, a container is used, which also has a mechanically openable non-return valve. When receiving the container on the handle or later when tilting the container of the backflow preventer is forcibly opened by the operation of a handle. There is an immediate pressure equalization.

The invention will be explained in more detail below with reference to some embodiments and drawings. Showing:

1 - A container in one embodiment as a canister with a handle arranged in the same aeration device in a sectional view.

2 - A container in one embodiment as a canister with ventilation device in a tilted position, as it is present during the emptying process and again in section.

3 - An enlarged view of the ventilation system used.

4 - A sectional view of a ventilation device with a loaded by a compression spring sealing body.

A container 1 is in the container interior 2 with a liquid 3 filled. The container 1 has the shape of a canister with a molded handle 4 , a filling and / or discharge nozzle 5 and a closure device 6 for this.

In the area of a back rounding 7 of the handle 4 is a ventilation device 8th arranged.

When emptying the container 1 in tilted position, as in 2 shown, held out of the filling and / or discharge nozzle 5 a uniform liquid jet 9 pours. In the container interior 2 results in a residual volume 10 , in the area of which the ventilation device 8th located. Through the ventilation device 8th can outside air 11 in the container interior 2 flow.

The ventilation device 8th consists of a molded part 12 , a stepped bore 13 a sealing body 14 and a security component 15 , In the stepped bore 13 is a magnetic or magnetizable area 16 available. The sealing body 14 is either magnetic or magnetizable. In any case, one of the two magnetic components is permanently magnetic, so that a magnetic field builds up.

If the molding 12 is made of a non-magnetic material, the required magnetic force can also be achieved by a permanent magnetic or magnetizable disc on the front side of the molding 12 is arranged.

At the in 4 shown embodiment of the ventilation device 8th is again a molded part 12 with a stepped bore 13 and a sealing body 14 used. On the security component 15 supports a compression spring 17 from that the sealing body 14 holds in closed position. The compression spring 17 is sized so that the ventilation device 8th at pressure differences between outside atmosphere 18 and internal tank pressure opens and pressure equalization is brought about.

The inventive method for emptying containers 1 for liquids is that a vessel with a filling and emptying nozzle 5 used with a liquid 3 is filled and is approximately perpendicular to a surface. As an alternative to a surface can also be a frame the container 1 take up.

In a first step, the container 1 opened by the closure device 6 of the filling and emptying nozzle 5 is opened.

In an optional step can on the filling and emptying nozzle 5 a pouring aid are placed.

In a further optional step, the container 1 be lifted or transported to another location. This can also be done before opening the fill and drain nozzle 5 happen.

Below is the container 1 so far from the vertical inclined to the side that the liquid contained therein 3 from the filling and emptying nozzle 5 runs out. As the slope increases, the liquid level in the container changes 1 located liquid 3 so far that he is above the filling and emptying nozzle 5 lies.

By the outflow of the liquid 3 arises in the container 1 a negative pressure. About the ventilation device 8th outside air flows 11 in the container interior 2 until equilibrium is established between external and internal air pressure.

Upon further outflow of the liquid 3 this results in an interaction and as a result a constant pressure equalization. There is no outside air 11 over the filling and emptying nozzle 5 sucked. The outflowing liquid jet 9 is stable, can be reliably determined in terms of quantity and flow direction and there is neither a bubbling nor a change in the beam direction.

In a preferred embodiment of the method, the ventilation device works 8th with magnetic or magnetizable elements, so that the sealing body 14 held by magnetic force in the closed position.

Another embodiment of the method can be the use of a ventilation device 8th provide, in which the sealing body 14 with a compression spring 17 is held in the closed position.

The invention thus has the advantage that it makes it possible to bring about an automatic or a forced pressure equalization during emptying of containers, so that the pouring of liquids facilitates, and at rest, that is, during storage of the container, is always closed and located in the container Liquid can not flow out.

LIST OF REFERENCE NUMBERS

1

container

2

Container interior

3

liquid

4

handle

5

Filling and / or drainage nozzle

6

closure device

7

Back rounding

8th

aerator

9

liquid jet

10

residual volume

11

outside air

12

molding

13

Stepped bore

14

sealing body

15

securing component

16

Magnetic or magnetizable area

17

compression spring

18

external atmosphere

Claims (6)

Container ( 1 ) for liquids with a ventilation device ( 8th ), at least consisting of a vessel, a filling and / or emptying nozzle ( 5 ), and a ventilation device ( 8th ), which is an automatically opening and closing non-return valve consisting of a molded part ( 12 ) with a coaxially arranged bore ( 13 ), one in the bore ( 13 ) formed sealing collar and one in the bore ( 13 ) arranged sealing body ( 14 ), characterized in that the molded part ( 12 ) and / or the sealing body ( 14 ) of the non-return valve are magnetic and the sealing body ( 14 ) is held in the closed position by magnetic force. Container ( 1 ) for liquids according to claim 1, characterized in that the backflow preventer is arranged in a region of the vessel which, when properly stored and / or emptied of the container ( 1 ) is filled with gas. Container ( 1 ) for liquids according to claim 1, characterized in that the sealing body ( 14 ) of the backflow preventer is held by a spring in the closed position. Container ( 1 ) for liquids according to one of the claims 1 or 3, characterized in that the sealing body ( 14 ) of the backflow preventer is mechanically printable from the closed position. Method for emptying containers ( 1 ) for liquids with a ventilation device ( 8th ) according to claim 1, wherein the container ( 1 ) from a vessel, a filling and emptying nozzle ( 5 ) and a ventilation device ( 8th ), characterized in that in the case of the container ( 1 ) the closure of the filling or emptying nozzle ( 5 ) is opened or removed, optionally in an optional step on the filling or emptying nozzle ( 5 ) is placed a pouring aid, optionally in an optional step of the container ( 1 ) is lifted and / or transported, then the vessel is tilted so far out of the vertical to the side until the liquid contained in the vessel ( 3 ) flows out, wherein in the interior of the vessel forms a negative pressure through which the sealing body ( 14 ) in the aeration device ( 8th ) arranged backflow preventer in the direction of the container interior ( 2 ) is moved and by the backflow preventer outside air ( 11 ) into the container interior ( 2 ) is sucked. Method for emptying containers ( 1 ) for liquids according to claim 5, characterized in that the sealing body ( 14 ) of the non-return valve can be pushed mechanically out of the closed position.

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