DE2205418C2 - Method and device for ex would give highly viscous liquids from a container - Google Patents

Description

a) The storage container is filled under normal atmospheric conditions, wherein the liquid level in the container is exposed to atmospheric pressure, while one is immersed in the liquid Ventilation pipe is closed to the atmosphere, so that no Liquid penetrate into the closed ventilation pipe by compressing it can,

b) forced change of the atmospheric pressure above the liquid level in a negative pressure with reduced property to absorb moisture through gas-tight Close the filler neck and open the ventilation pipe with free access to the atmosphere;

c) sedimenting liquid level is aas gas or Lrft entering passed through the liquid so the incoming gas bubbles by diameter Dimensicnierung or inclined position of the Belüttuiigsrohres, Jass large gentig to obtain sufficient buoyancy 7 \ i, to reach the liquid level and that during the Buoyancy, the residence time is long enough to absorb moisture from the liquid through which the gas bubble travels when the gas requires moisture.

2. V01 direction for carrying out the method, consisting of a container with a Electromagnetically controlled outlet valve, whereby the liquid when opened by static Eigenendiuck flows out, characterized in that the sealing valve body (7) at the lower End of a push rod (8) is arranged which extends through the entire container (1) and at its upper end outside the container

(I) with a solenoid (10) for dL control of the push rod (8) with valve body (7) locked -

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3. Apparatus according to claim 2, characterized in that the push rod (8) extends through a ventilation tube (11) extends in the container (1), the upper end of which extends over the Behäli (1) of the solenoid (10) is enclosed.

4. Apparatus according to claim 1 or 2, characterized in that the ventilation pipe

(II) is provided at its lower end with a guide (13) for the push rod (8).

5. Apparatus according to claim 4, characterized in that the guide (13) the valve body (7) in its opening position of the container (1,3) keeps free.

6. Apparatus according to claim 2, characterized ςβ- - indicates that the valve body (7) consists of one

^J FTFR the seal suitable material.

7. The device according to claim 2, characterized

indicates that the valve body ("/) is round or conical.

S. Device according to claim 2, characterized in that the valve body (7) is rotatable is attached to the push rod (8).

9. Apparatus according to claim 3, characterized in that the ventilation pipe (11) extends to close to the bottom of the container (1) and carries a vent valve (12) at its upper end.

10. The device according to claim 3, characterized in that the ventilation valve (12) at The vacuum in the ventilation pipe (11) opens automatically.

11. Device / laughs at claims 2 and 9, characterized in that the device is provided with an adjusting lever (19) with which the ventilation valve (12) is in the open position is to be moved.

12. The device according to claim 11, characterized marked that the steep lever (19) is a component like the ceiling! the housing from the container (1) with which the filling opening of the container (1) is to be exposed.

13. The device according to claim 1, characterized in that that the filling opening (3) of the container (1) with an airtight seal (6) is provided.

The invention relates to a method for dispensing highly viscous liquids, in particular with a high sugar content from a container and a device for carrying out the process, which has a container with an electromagnetically controlled outlet valve, wherein the liquid flows out due to static inherent pressure when opening.

In known methods and devices of this type, the control of a valve body on the Bottom of the container by an electromagnet which is arranged at the outlet of the container. The to The controlling valve body consists of a magnetizable one Material. There are several disadvantages associated with this arrangement. On the one hand will in such devices during prolonged operation as a result of the heating of the magnet coil Heat i.i the viscous liquid wedge, through which the degree of viscosity is changed.

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Dispensing of certain amounts of liquid. Furthermore, in the known arrangements, the accuracy of the metering when dispensing a highly viscous liquid is impaired in that the highly viscous liquid to be dispensed flows over the magnetizable valve body. Finally, there is a shortcoming of known arrangements in that the valve body is often pressed against a wall of the valve housing when the valve is opened. In the case of highly viscous, especially very sugary liquids, a suction effect occurs which can be so strong that even with the aid of a spring the plunger is not released from the wall of the outlet quickly enough, so that it enters its spout with a delay Closed position falls. This has after-run effects, the m inaccurate quantities when dispensing the

Lead liquid. You can try that to remedy this by arranging a reinforced spring. In such cases, however, the solenoid must be very strong, so that the other aforementioned disadvantages occur to a particular degree. In addition, this increases the effort, especially when manufacturing smaller devices large.

The object of the invention is to provide a method and an apparatus for carrying out the method which are described under g. ringen * structural effort allow exact dosing o \ v · * risk of operational disruptions. The π C. of the invention intended method ...; characterized by the process step:

a \ The storage is oehdlter filled under normal atmospb mixing conditions, wherein the F! üss ,, _ö keitsspiegel atmospheric in the container is subjected to pressure is closed while immersing into the liquid ventilation tube 'gen atmosphere, so that during filling no liquid in the closed ventilation pipe can penetrate through communicating effect,

b) forced change of the atmospheric pressure above the liquid level in a negative pressure with reduced property to absorb moisture through gas-tight Closing the filler neck and opening the ventilation pipe with free access to the atmosphere;

c) when the liquid level falls, d; s entering gas or air through the liquid so guided by diameter dinraisioning or inclination of the ventilation pipe so that the gas bubbles entering are large enough to to get enough buoyancy to reach the liquid level and that during the buoyancy the residence time is long enough to remove it from the gas when it requires moisture Liquid that travels through the gas bubble.

The device for carrying out the method is characterized in that the sealing valve body is arranged at the lower end of a push rod which extends through the entire container and at its upper end outer calf of the container with a solenoid for controlling the The push rod is provided with a valve body. As a result, not only the outflow quantities remain when opening and closing the valve independently of the different high temperatures of the solenoid, but the accuracy of the dosage is also improved by the fact that of the Electromagnet raised magnetic core as part of the push rod not to be dispensed is surrounded by highly viscous liquid and thus always remains perfectly clean. Besides that the weight of the plunger can fully replace the spring pressure.

Further problems can be solved by expedient configurations of this arrangement with the support of an outlet valve for containers are regularly associated with a highly viscous liquid.

The known containers for the storage and dispensing of highly viscous sugary liquids require regularly a high level of effort in cleaning the containers. This is due to, that with a rapid or even slow reduction of the liquid level in such containers the liquid can dry on the walls and outlet ducts and thus a considerable amount Cleaning effort caused *. In addition, after emptying such a container a fine one ίο sticky film settles on the slopes of the container, which do not show any particularly pronounced incrustations. Such zones are particularly critical with regard to the hygienic conditions to be maintained, since dust and bacteria and others Impurities can occur. In general, therefore, only syrups and / or concentrates are used With a relatively low sugar content, such as 50 Brix, to keep crusts on one Lower the minimum. However, such syrups and con centrations have the defect that they because of theiru low sugar content are not self-serving. It has been tried in practice To take advantage of self-preservation due to the high sugar content of the syrups and concentrates. In such cases, however, the problem of encrustation and the need to clean the remained Container. Since the container is normally not directly at the place of its use, i. H. for example the location of the installation of a drinks machine. can be cleaned, it must for the purpose of its cleaning be transported to another location in the known arrangements. Result from this However, despite the highly concentrated products, the same hygienic problems as with lower ones Concentration of sugar in the liquids. According to the invention, one can be continuously updated Avoid cleaning the container to be carried out by taking measures that enable the container can always be replenished without the possibility of spoilage or a The liquid has dried on the inside wall of the container. According to the invention is for this provided that the push rod extends through a ventilation tube in the container, the upper one The end is enclosed by the magnetic coil above the container is, and that in a preferred embodiment, a ventilation valve at its upper end i thinks, which preferably opens automatically when there is negative pressure in the ventilation pipe. This solution is based on the following. "Findings:

For example, a liquid with 60 to 70 Brix is strongly vkkm Small air bubbles that are in such a product can be fully slowed down in their buoyancy. It requires therefore of a certain size for a gas base. to make the buoyancy of the same so strong that the strong viscosity of the liquid is overcome and the gas bubble, albeit with a long delay, the surface; r reaches. It is well known that a low level of air humidity accelerates Accelerated drying of liquid residues on the container wall. This is why the invention sees before forming a gas or air cushion above the liquid stored in the container a relatively high humidity. On the one hand, this presupposes that the stored liquid is airtight at the surface is closed off from the atmosphere.

5 '6

Highly viscous liquids with a high sugar content, ie small differences in temperature, tend to have their viscosity as a function of the hand, which according to the results of the laboratory changes the ambient temperature significantly. For this reason, the attempts with the device according to the invention are in particular, with automatic. To be bridged, so that a nioria-long tapping rivet cools such liquids in order to allow a concentrate without maintaining a constant viscosity, cumbersome and difficult cleaning jobs in the necessary by-eine.genaue dose>. To be carried out with an intermediate time. A prerequisite for this is a corresponding cooling, but the result is usually an airtight seal of the container, a moderate reduction in humidity, since the arrangement of a closure on the container, the humidity initially condenses on, for example, an evaporator after completion of the filling process and takes care of an airtight seal after a
At the right time when the ice was falling. In such spaces, with a suitable diameter dimension, air is constantly evacuated or the ventilation pipe is inclined to allow moisture. Liquids which, for the purpose of drying, determine the size of the gas bubbles in such a way that the gene, are consequently exposed to a considerable degree of buoyancy in the highly viscous liquid in the case of fine surface films. and on the other hand, a sufficiently long residence time in the liquid with the proposed arrangement according to the invention ^; When reaching the liquid level, especially under these circumstances, a surface is guaranteed in order to achieve an accumulation of moisture on the container walls and also when dry gas is prevented, especially at the outlet organs, because practically, such as cooled air, entry
As is well known, no air and no gas can be conveyed to the surface of the table at negative pressure or at liquid level, which has a dampness, the creation of a vacuum, the corresponding gas level, at which drying takes place, ringing humidity could take up, for example. Air under normal atmospheric conditions.

If, for example, the liquid is to be in a device, the invention takes advantage of this fact,

automatic drinkers are administered, the loading must take place automatically when the container is filled

container to be ventilated when the liquid in a syrup or concentrate and with start-up

Containers that are closed to the atmosphere on the dispenser or drinks machine in the container

is preserved. This knowledge is achieved with the invention - a negative pressure or vacuum above the liquid

This is exploited by the fact that the Belüf- 30 kuum arises first. This happens because with free

treatment at the bottom of the container takes place in this way - namely, the opening for the filling process would be automatic

via the ventilation pipe - that when the ventilation pipe is tapped, it is closed against the atmosphere.

Liquid the gas will so slowly sink on the surface. This increases the syrup when it is filled

occurs that on the way through the liquid the concentrate or the concentrate in the container, but not in the loading

This only removes the smallest amounts of moisture from the ventilation pipe down to -35, as this, as I said, automatically

to a certain saturation that is sufficient to be connected to. If the filler neck is now

the liquid surface, the gas cushion is always closed with the table after completion of the filling process.

to ensure sufficient moisture content and to make the device ready for use, for example

hen, which in slow or fast tapping is done by closing the cooling chamber for the

This process ensures that the centrate or the syrup does not dry out

the container wall cannot occur. Ventilation pipe opened to the atmosphere. now

In addition, since the liquid, regardless of its consistency, tries to get cold through the container wall, the expansion vessel also penetrates the point where the liquid no longer has a relatively high specific weight, depending on the sugar or dry matter content present ,ommunifindet, there is a slight condensation effect to penetrate the ventilation pipe in an ornamental way. As a result of the wall of the container, so that the syrup or the concentrate also clings to it. is avoided in under-drying. The advantage of not having to clean the container pressure or vacuum above the liquid spike, as a rule, when refilling previously gels, ie with the Füllvorganp having to compulsorily clean, also results from dim continuously and automatically a vacuum above the fact that in the case of the invention Behiiäcr 5 ° liquid level and is constantly maintained, all moving parts at the bottom of the container, such as the air, which initially with normal atmospheric valve body, always see the viscous liquid pressure as volume X as a bubble through which are covered. If the newly released or replenished liquid is to penetrate and in this way still filled with liquid is enriched with the same moisture above the temperature point, viscosity must be shown after leaving, taking into account that there are slight differences in the liquid surface in the vacuum or in the unsightly the temperature a subpressure tends to cause a part of its moisture like viscosity change, so give it up. This process is how you let the liquid level in the container so that the drying in the container continues to be totally high that stopped when the liquid is dispensed further.

first of all, all the liquid is released, and then with regard to the nature of the valve organs

by ensuring that the heaped up is expedient if the for closing and

Liquid assumes the same temperature. For this purpose, the valve body used from a non-magnetic

cs a prerequisite that for containers made of table material and, for example, spherical

cincm cooling space are accommodated, which is designed for example or conical, so that in the

wisely chilled below a temperature of 4-5 ° C 65 closed position only a "linear contact

is. the product to be refilled or the product to be refilled and in the open position only one point

Lende liquid in a refrigerator for the filling-shaped contact with the wall of the spout

Sun »ties borrowed is taken. There can be. But it is even more advantageous if

will carry the ventilation tube at its lower end with a. The device also includes a ge-guide for the push rod, which is dimensioned in FIGS In the position the wall of the container or its bottom extends. This ventilation pipe 11 does not touch ^{1 at all.} Such a guide 5 surrounds the push rod at Sch! For this purpose, the valve can be designed in the manner of a disk SeSn ₁ body 7 concentric and is provided with a hole or a slot at its upper end with a lip valve designed as a lip valve and at the lower end of the Bcluffungsrohreslan ^ eprd-: jüftürigsyeritt ( ί is .2 provided at its lower Endlict In a further embodiment kanri provided;.. abschniti asks since ^ Beliiftungsrohf 11 eihej Führungssein that the valve body is rotatably mounted at the lower end io disc Ϊ3 with a slot through which clie Stöder plunger rod so that It extends even at ßelstange 8 so that it can swing back and forth in the ventilation of contact with the wall of the outlet on pipe 11. The level that rolls along with 14 and thus any friction level corresponds to the static pressure resistance are kept very low .point of the liquid, which is determined by the

To control the vent valve, the 15 depth of the lower edge of the vent tube 11.
Device be provided with an adjusting lever, with the vent valve 12 is such that

which the vent valve in the open position to it only lets air into the vent tube 11 when move is. This is preferably done according to a negative pressure found in this. Is in Jem Embodiment of the invention inevitably after a ventilation pipe 11, however, an overpressure is present-filling of the container by using a part 20 as the adjusting lever. so closes the vent valve 12. Is the How to use the cover of the housing from the container. Removal of closure 6 and liquid in the container finds, with the d * e filling opening of the container 1 filled, then no noteworthy portion can ter 'is to be exposed. of the liquid as a result of a communicating

Various exemplary embodiments of the invention can enter the ventilation pipe 11, since they are from there below, with reference to a symbol, the air cannot escape. The liquid tion explains in which the invention increases oort therefore only by a small amount Devices in a schematic representation again on the lower edge. Afterwards it becomes liquid given are. dispensed into container 1, the liquid

In the drawing shows mirror inside the ventilation pipe, namely up

F i g. 1 a device with rotatably mounted 30 at the lower edge of the same, with simultaneous Valve body in the closed position after filling formation of a negative pressure in the chamber the liquid, upper section of the container 1 above the Jort loading

F i g. 2 shows the device of FIG. 1 after partial final liquid level This chamber becomes Emptying the container. then filled with air with each filling process.

Fig. 3 shows the outlet of a container with two pipes connected through the ventilation pipe 11, i.e. from below divider-like valve bodies, passes through the entire column of liquid.

F i g. 4 shows a device with ventilation as shown in FIG. 2 shows. The entire outflowing volume, To get the liquid through a cover of a housing is only actuated is after the complete filling up of the time of the excitation of the magnet container, 4 ° table outlet valve. The run-out time therefore acts as

Fig. 5 the container valve in the open position. lein volume-determining, because the static pressure - Fig. 6 the device of FIG. 4 after the starting point at the point of ventilation or the lower one fill and close the housing cover and the edge of the ventilation pipe 11 and is above it

F i g. 7 shows the device according to FIG. 4 after partially located liquid column in a vacuum or emptying the container. 45 vacuum chamber is suspended so that in a loaded

The in the F i g. 1 and 2 as well as 3 reproduced correct time only as much liquid from the container device has a container 1 for which the feeder 1 can escape, as in the same time would take gas and release a highly viscous, very sugar- to fill the vacuum entry,
adherent liquid 2. The dispensing of the liquid 2 The in the F i g. 4 to 6 shown device

takes place via an outlet 3, which differs at its upper 50 from the previously described ins-end a truncated cone-shaped enlargement 4 has a special feature in the nature of the vent valve. The liquid is entered through a tils and in the means for its control. This Opening 5, which is airtight through a closure 6 vent valve 12 has a valve plate 16, the closed is. hangs on a plunger 17, which overhangs upwards

For the Abdichhn.3 of the outlet 3 a ball 55 protrudes its seat. The container 1 i & i is provided in a shaped valve body 7 which is fixedly or housing 18 which is provided with a closure rotatable in a fork-shaped end of a plunger cover 19. If the container 1 is filled, the rod 8 is supported. The push rod 8 is on its way, so the cover 19 is shown in FIG. 4 in the upper end provided with a steel core 9 to pivot the open position. Then the 60 shutter 6 is to be lifted by energizing a magnetic coil 10 as shown in FIG. 5 to solve. This ^v erso that the valve body 7 by rolling on the home schlußo has a rubber bead 20 with a nenwandung the extension 4 in its Öffnungsstel- toggle lever 21. If the lever 21 in the vertical development according F i g. 2 is raised, in which, depending on the position shown in FIG. 5 pivoted, so ^ from the time of excitation of the magnetic coil 10, one of the rubber bulges 20 relaxes and assumes a certain cylindrical liquid quantity 2 from the outlet 3 65 shape. In this position the lock can run out. It can be seen that the magnet is pulled from the container 1. If afterwards "| fP coil 10 is arranged above the container 1, when the liquid is filled into the container 1, then no heat rises from it to the liquid 2 - according to FIG

309 641 / iC2

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11 on and the vent valve 12 closes. According to a liquid level as indicated by 22 in FIG. 7 when the container is filled, the cap6 is marked. The state according to FIG. 6 is inserted and the lever 21 clockwise thus only represents the initial state. It is pivoted by pivoting so that the rubber bulb 20 is spread. 6 gives an airtight seal. 5 is lowered to the lower edge of the ventilation pipe 11, then the cover 19 is swiveled into the operating position, preferably automatically, according to FIG. 6. He presses switched on, which indicates an empty state, in which the valve stem 17, so that the vent valve 12, a refilling of liquid is appropriate.
remains open and in the ventilation pipe 11 a. Since with a lemonade syrup or fruit normal atmospheric pressure is generated or io juice concentrate, the sugar content is maintained at the level described. Since the liquid 2 strives to be enriched in an arrangement up to the size of a self-contained, communicating in the ventilation pipe 11, it can be stepped on, and the majority of the liquid is automatically consumed in the container 1 above the liquid level Apply new liquid under vacuum or Va- residual liquid. Through the kuum. If the valve tappet 8 is activated by exciting the new device, this is not only guaranteed. Magnetic coil 10 and thus the valve body 7, that from the beginning to the end of the use of the remedied, the liquid in the lower section of the holder always flows in the same amounts via the outlet 3 free ventilation pipe 11, but is also given through a container 1, and the same amount escapes via the closing of the lid 19 to ensure that a drain 3 from the container. The amount of gas or air entering the container ao in the chamber of the container 1 above the ter 1 regulates the liquid level there is generated,
for a short time only the discharge volume. When the level in the container 1 drops, there is no fear of drying-on after the first release of liquid, so that the container 1 does not need to be cleaned in the aerator, because a bacterial tube Ii does not rise again. This is avoided by the fact that the liquid in the container is excluded above the liquid and that there is no negative pressure on the inner wall as described and drying of liquid can result, especially in the ventilation pipe an atmospheric one If the drying liquid is pressed, there is no moisture. In the ventilation pipe 11, the air can therefore be released.

For this purpose 2 sheets of drawings

Claims (1)

Patent claims: 1. Method for dispensing highly viscous liquids, especially with a high Sugar content, from a container, characterized by the following process steps: