WO1992016450A1

WO1992016450A1 - Arrangement of pumps and dispensers for highly viscous liquids

Info

Publication number: WO1992016450A1
Application number: PCT/DE1992/000196
Authority: WO
Inventors: Bernd Schenk
Original assignee: Schenk, Helga
Priority date: 1991-03-14
Filing date: 1992-03-10
Publication date: 1992-10-01
Also published as: EP0575382B1; JPH06505316A; DE4108586A1; EP0575382A1; DE59205183D1; ATE133395T1; AU1355192A

Abstract

The invention concerns an arrangement of pumps and dispensers for highly viscous liquids with a high solids contents or a content of solids in larger segments, in particular for use with viscous foodstuffs. The substance to be delivered is supplied in a flexible, collapsible plastics container (1). The plastics container is inserted in a pressure vessel (3) connected to a pressure generator (4) which introduces a pressurized medium, in particular air or water, into the space between the plastics container and the pressure vessel. The substance to be delivered is discharged at the end of a delivery tube (7) connected in a pressure-tight manner to the plastics container. The delivery tube is associated with a squeezing device (10-13) comprising a plurality of functionally harmonized squeezing elements which force the substance to be delivered through the delivery tube. The resultant arrangement for discharging viscous liquids is structurally simple and ecological and has optimal microbiological properties.

Description

ARRANGEMENT FOR PUMPING AND DISPENSING HIGH VISCOSITY LIQUIDS.

The present invention relates to an arrangement for pumping and dispensing highly viscous liquids and / or similar liquids with a high solids content or solids in larger segments according to the preamble of claim 1.

An arrangement of the gat directional type is to be regarded as known with regard to normal liquids, in particular drinks, via the disclosure content of DE-OS 22 61 798.

In food technology, different products are often dispensed together for visual, sensory and / or intolerance reasons only immediately before they are used. For similar reasons, the storage of the products to be dispensed is often problematic, in particular because the properties of the air often change due to the atmospheric oxygen.

Container sizes between 5 and 20 kg are common for the commercial sector. Self-supporting containers are mainly used as packaging. For low and medium-sized products, these are usually canisters with screw caps; For higher-viscosity products and products with a high solids content or with larger segments, these are usually buckets with a snap lid. Flexible packaging, eg bags, is mainly intended only for containers without partial removal due to their insufficient seal strength. In the age of ecological thinking, reusable containers are often required. Particular attention should be paid to the fact that this packaging can also be completely emptied and disposed of in an environmentally friendly manner. In the case of canisters, particularly in the case of multiple partial taps, the complete emptiness and the empty volume represent a particular problem. Buckets are somewhat more suitable here, but are difficult to close under extreme conditions. Flat film pouches are excluded from the outset for reasons of insufficient strength and because of the formation of folds and / or dead corners and the like, inadequacies for applications under rough operating conditions. Only the flexible or semi-flexible pouch packaging offered as a compromise for these types of packaging largely meets the different requirements.

In the commercial sector, the conveying and dispensing of viscous, perishable products is mainly done with displacement pumps that are difficult to clean.

The biggest weak point of these pump systems are the valve and sealing systems, which tend to incrust. The valveless centrifugal pumps practice at

Pumping out too high shear forces, so that the consistency of the medium can be changed considerably under certain circumstances. The hose pump systems that are most suitable from a microbiological or cleaning technology point of view are not without problems on the one hand because of the lack of suction capacity and on the other hand because of the restoring moments of the delivery hoses when the pinch rollers rotate. The same applies to the screw pumps known from large-scale technology.

The previously known dispenser systems are particularly not suitable for mixed discharge or

Combination of dispenser heads for parallel discharge

different goods. In connection with highly viscous liquids, such as ketchup, particular difficulties arise from the fact that such liquids are subject to strong fluctuations in consistency due to the production process. Other highly viscous liquids, such as margarine or processed cheese, are greatly affected in their viscosity, ie viscosity, by slight changes in temperature.

The dosing of highly viscous liquids under variable working or ambient conditions is a serious problem. With conventional suction piston pumps or peristaltic pumps, the problems shown cannot be easily solved in the preferred field of application of food technology; in particular, time-controlled dosing is not possible with the required accuracy.

However, accurate dosing is required for many applications. In the - not - food technology - application of grease lubrication for ball bearings or the dosing of the components of adhesive mixtures, the dosing accuracy is of particular importance for the function; With regard to individual flavors, the dose accuracy is decisive for the distribution or admixture of spices to, for example, sauces or the ratio of, for example, ketchup to mayonnaise; Also with regard to business data, the quantity of conveyed goods is of interest, since it can be used to infer the amount of a main component loaded with this material - this case plays a role in connection with dressing in salads, for example. The problem with regard to hygienically perfect and perfectly cleanable, i.e., termination-free systems has already been mentioned. With regard to foodstuffs, a particular problem point is that a residual drop often remains at the end of the delivery hose, generally the dispensing element. This should be avoided, firstly for reasons of cleanliness and secondly for reasons of hygiene. The droplet, which generally turns unsightly due to the entry of air, has a larger surface area than the cross section of the delivery hose and is therefore suitable for contaminating the entire system, in particular from a microbiological point of view.

The object on which the present invention is based is to eliminate the aforementioned problem points and to provide a dispensing arrangement of the generic type which is of simple construction and which has optimal properties with regard to ecological and hygienic or microbiological conditions and requirements.

This object is achieved by the teaching specified in the characterizing part of patent claim 1.

In other words - as used in claim 1 - the essence of the present invention is to enclose and discharge a certain amount in the conveying hose in a quasi step-wise or step-wise manner by means of a corresponding time control or training of the squeeze-oriented goods. The two shown - in subclaims 2 and 6 respectively specified solutions are based on the one hand (claim 2) from a plurality of squeeze valves actuated in a coordinated manner and on the other hand (claim 6) from a hose squeeze pump which also partially includes the delivery pump.

In view of the problem of dripping or droplet formation mentioned, it is provided that a vacuum is generated at the end of each delivery cycle at a distance from the end of the delivery hose. Thus, the rest of the conveyed material present at the end is quasi pushed back and the conveying sight is clean (claim 7).

Special configurations with regard to the delivery of the material to be conveyed at the end of the conveying leek are the subject of subclaims 9 and 10. Accordingly, the end of the conveying hose ends in a di spenser head, which as a rotatable sleeve with a cap (claim

9) or as a cylinder with a locking rod (claim

10) is formed. The dispenser head can also have several

Have conveying channels through which different conveyed goods can be discharged simultaneously,

In this case, if the dispenser head is realized with a sleeve, the material flows can be twisted or intertwined.

The invention is explained below with reference to the drawing. This shows in

Figure 1 is a schematic representation of a first embodiment of the arrangement for pumping and dispensing. 2 is an illustration of a dosing cycle of the in FIG.

1 arrangement shown;

Fig. 3 shows a detail A from Fig. 1 for explanation

the transition from the plastic container to the delivery hose;

4 shows a basic illustration of an exemplary embodiment of a hose pinch valve;

Fig. 5 is a schematic diagram of a second Aufzipprin zips of the pinch valves;

Fig. 6 is a schematic representation of a second embodiment example of the arrangement for pumping and dispensing;

7 shows a basic illustration of a first exemplary embodiment of a dispenser head for two conveyed goods;

Fig. 8 is a schematic diagram of a second embodiment example of a dispenser head for two goods to be conveyed;

Fig. 9 shows a preferred in

Connection with the arrangement for pumping and dispensing related plastic containers in two functional representations lungs;

FIG. 10 shows a detail C from FIG. 9 with regard to the passage of the delivery hose through the cover of the pressure vessel;

Fig. 11 is a perspective view of the plastic container according to Fig. 9;

FIG. 12 shows a detail D from FIG. 11 in a longitudinal section

X-X to explain the conditions on the collapsed plastic container;

13 shows an exemplary embodiment of a removal tube for a plastic container; 14 shows an exemplary embodiment of a removal lance for an artificial fabric container;

15 shows in four representations the formation of a connection for or with a removal lance according to FIG. 14.

According to FIG. 1, the conveyed material to be dispensed is provided in a “semi-lexible plastic art container 1 known per se. This plastic container is filled to the brim and without air pockets. The combination of such a container with an integrated handle enables environmentally friendly transport to the consumer. A particularly favorable embodiment of this type of packaging is the subject of patent application P 39 04 080. As shown in FIG. 1, the consumer places the flexible container 1 filled with the filling material in a pressure vessel 3. The plastic container 1 has a FÜLL- and removal nozzle 6, which is also pressure-tightly connected to a conveyor ski 7. The filler

/ Siphon 6 protrudes through the lid 2 locked with a bayonet lock on the pressure vessel 3 to the outside.

In the space between the plastic container 1 and the pressure vessel 3, a pressure medium, preferably compressed air or water, is introduced by means of a pressure generator 4 and a pressure reducer 5, and an overpressure P2 is thus built up, which causes the flexible plastic container 1 to collapse (see arrow _a ) and presses the material to be conveyed into the conveyor L as well. The conveyor hose 7 is the end of the material to be conveyed directly or, if necessary, via a dispenser. Four hose pinch valves 10, 11, 12, 13 are arranged in the illustrated exemplary embodiment along the conveying path, ie the conveying hose 7, each of which is functionally coupled to a control valve 10 ', 11', 12 ', 13'. This control valve Le are in turn coupled to the pressure generator 15 via a second pressure reducer 14; the pressure set via the second pressure reducer 14 and acting on the hose pinch valves 10 ... 13 has an overpressure P2 effective in the pressure vessel 3 compared to a higher pressure value P3. The control valves 10 '... 13' are activated in a specific and mutually coordinated sequence.

The Seh L also-squeeze valves 10 ... 13 squeeze the conveyor hose 7 in a certain way and press the conveyed material displaced into the conveyor hose 7 by the collapse of the plastic material container 1 in portions to the end or exit of the conveyor hose

7 out. Via the hose squeeze valve Le 10 ... 13, a volume-precise inclusion of a predetermined amount of material to be conveyed is possible, which leads to an exact dosage, regardless of the external conditions and hygienically fcrezi ehungswei se microbiologically pure.

The mode of operation of the leek pinch valves 10 ...

13 or the mode of operation of the arrangement shown in FIG. 1 is explained with reference to FIG. 2.

With regard to the representation according to FIG. 1, it should only be pointed out that the delivery hose 7 when the pinch valve L is relieved due to the pressure in the pressure vessel

3 acting overpressure P2 filled and reset in diameter, which also leads to the reset of the pinch valve itself. The function and mode of operation of the pinch valves 10... 13 of the same design will be explained in the following with reference to FIG. 2 via the representation of a complete dosing cycle.

First (Sketch 1) let the CLOSED-SEALING VALVE 13 closest to the end of the delivery also be closed, i.e. The delivery hose 7 is acted upon by the working pressure P3 via the conjugated control valve 13 'and the delivery hose 7 is squeezed off. The pressure P2 acting in the pressure vessel 3 presses on the synthetic material container 1, which in turn urges material to be conveyed into the leek 7. Between the shut-off pinch valve 13 and the plastic container 1, the conveyor hose 7 is filled with material to be conveyed; between the shut-off pinch valve 13 and the conveyor L see end of the conveyor hose 7 is open.

The two pinch valves 10, 11 arranged towards the pressure vessel 3 are activated with a subsequent control pulse (sketch 2); the delivery hose 7 is squeezed in the area of these two pinch valves 10, 11. A part of the material to be conveyed is pushed back into the plastic container 1. A defined volume of material to be conveyed is now enclosed in the area between the shut-off pinch valve 13 and the two other pressurized pinch valves 10, 11. In order to avoid end-side spraying of the material to be conveyed when the shut-off pinch valve 13 is opened, the pinch valve which acts as a RELIEF VALVE 11 and shuts off the defined volume on the rear is relaxed. The enclosed conveyed material under pressure partially fills the corresponding part of the conveying tube 7 (see sketch 3). Now the actual dosing process begins.

The shut-off pinch valve 13 is opened, whereby the material to be conveyed is open to the end of the leek 7 (sketch 4). If the relief valve 11 and the DOSING-CRUSH VALVE 12 which determine the delivery volume are activated one after the other, the previously separated or enclosed delivery is expressed in terms of rank or applied (sketch 5). If the dosing squeezing element 12 is then opened again, a suction effect occurs at the outlet of the conveyor L 3uch 7 (see sketch 6).

The shut-off pinch valve 13 is reactivated for the next dosing cycle; By opening the second SHUT-OFF CRUSH VALVE 10, material can now flow again.

(The arrangement of the pinch valves 11 and 12 is also conceivable in the reverse order in order to modify the sucking back (smaller volume)). The dosing parameters, i.e. Conveyor speed and

The delivery rate can be selected or varied by throttling the air supply to the pressure vessel 3 and by selecting the dosing pinch valve 10 accordingly. The transition from the plastic container 1 to the conveying hose 7 is explained with reference to FIG. 3. On the plastic container 1, the extraction nozzle 16 is closed by a hose lip L 17 provided with a thin point; the interior of the plastic container 1 is thus sealed tightly and cleanly. After inserting the

Plastic container 1 in the pressure vessel 3, the end of the extraction nozzle 16 is cut at the thin point a (see dashed line cap) and the conveying hose 7 becomes simply plugged onto the open end of the extraction nozzle 16. Since in the pressure vessel 3 and in the plastic material container 1, as well as in the delivery tube 7 there are 7 same pressure ratios, no pulling force acts on the simply attached delivery hose 7; so that no further pinch clamps are required for this hose connection and the conveyor seh l also 7 does not require any separate connecting elements.

An exemplary embodiment with regard to the pinch valves 10 ... 13 is shown in FIG. 4. As can be seen from the illustration, the conveying valve 7 is inserted into a pinch valve. This has a so-called guide tube 20, which encloses a housing 21, which is connected via a pressure tube 22 to the associated actuation valve 10 '... 13'. If this is activated, the conveying hose becomes via the guide hose 20

7 squeezed together. The guide tubes 20 are required to easily change the immediate

Allow to see leeks 7.

According to the embodiment of FIG. 5, the

See leek pinch valves 10 ... 13 together with the

Conveying hose 7 can also be integrated in a one-piece unit. This is realized in that a reinforced PVC hose 25 is pushed onto the conveying hose 7. This then becomes the number of four

Pinch valve Len according to the inside of its longitudinal line welded longitudinally at a predetermined distance to the guide tube 7, so that 26 pressure or bellows chambers are formed between these - five - weld seams. Are centered on the outer PVC hose 25 to this Pressure chambers connection piece 27 fixed and bores 28 machined, so pressurizing the conveying hose 7 can be compressed and shut off (compare dash-dotted lines).

6 shows a second exemplary embodiment of an arrangement for pumping and dispensing. An art fabric container

1 is inserted into a pressure vessel 3. That with a lid

2 closed pressure vessel 3 is connected to a pressure generator 4 via a pressure line 30 and a control valve 31. The plastic container 1 is - analogous to

1 and 3 - with a conveyor see leek 7, which is guided through a housing 32 of a rotating see leek pinch valve in the form of a hose pump 33. The use of a peristaltic pump 33 according to the exemplary embodiment illustrated is possible in particular because this overpressure hose 7, which is effective in the pressure vessel 3 and thus in the delivery hose 7, is always spread apart.

The hose pump 33 shown has four pinch rollers Len 34, which force the material to be conveyed through the conveying hose 7 in a manner specific to the leek pump. At the

At the end of a metering cycle, the peristaltic pump 33 is slightly turned back (see arrow b), so that a certain negative pressure is created at the end of the delivery hose 7. The material to be conveyed at the end of the conveyor hose 7 is sucked back in this way. To help prevent dripping, a type of nozzle 35 of smaller diameter is plugged onto the end of the delivery hose 7. This acts like a capillary so that no drop can form. Optionally, a 35 instead of the nozzle elastically closing stopper can be used.

In an advantageous embodiment, it is also possible

Diameter of the delivery hose 7 of the consistency

to select the conveyed material accordingly, so that dripping is reliably prevented in this way too.

7 and FIG. 8, a dispenser head 40 which can be used in conjunction with two liquids to be discharged together will be explained. The two liquids are each squeezed out via an arrangement for pumping and dispensing according to FIG. 1 or FIG. 6 and - corresponding to their different viscosities - conveyed in conveying leeks of different diameters.

These two delivery hoses 7, 7 'thus lead to a common dispenser head 40, via which the material to be conveyed is then ultimately discharged. The flow rates enter the dispenser head 40, which immediately puts a motor 41, 42 into operation. This motor 41, 42 rotates at a speed of approx. 1 ... 10 / see. a quill 43. This quill 43 is provided with a tooth, here two, radial grooves, each of which is appropriately acted upon by conveyance, via various axia holes, each associated with the annular grooves (dispenser channels) 44, the conveyed material then reaches the dispenser tip 45, where the axial holes leading the material to be conveyed through

Valve elements can be closed directly.

The sleeve 43 is coupled via a plug-in coupling 46 to the motor 41, 42 lying above it. For example, the coupling elements consist of translucent Material, light effects can be achieved due to the preferably different coloring of the goods to be conveyed or irradiated when rotating.

For the different specific controls of the pinch valves for the flow rates on the one hand and the motor on the other hand, a control is provided which activates the connection between the delivery hoses 7, 7 'and the sleeve 43 according to the specific conditions, in particular goods to be conveyed.

As far as the function of the system drawn with reference to FIG. 7 is concerned, it should be noted - as indicated graphically in the left corner below - that the generally continuous parallel material flows of the conveyed goods "A" and "B" are caused by the rotation of the sleeve 43. can be quasi twisted or intertwined so that the effect is achieved that the two conveyed goods "A" and "B" one after the other in portions one after the other on an item passed under the sleeve 43, for example placing a roll with sausage over the hose Pinch valves are used to set the flow rates; these mass flows are then by means of the sleeve 43, i.e. their twist, carried out twisted.

The dispenser head described with reference to FIG. 7 is preferably suitable for example for ketchup and / or mustard and / or mayonnaise. In contrast, the dispenser head shown in FIG. 8 is suitable for salad dressings, ie dressings or the like. The basic task of the dispenser head shown in FIG. 8 corresponds to that of FIG. 7. In contrast to the exemplary embodiment according to FIG. 7, however, no dispenser head is provided with a rotating quill, and the dispenser head 40 consists of a one-piece cylinder

50, the cylinder interior 51 is connected to the conveyor see leeks 7, 7 '. In the center and axially symmetrically in the cylinder interior 51, a locking rod 52 is suspended, which closes the cylinder interior 51 via a spring 53 and a flap 54. If material to be pumped is now pumped into the cylinder interior 51, the closure flap 54 is raised; the material to be conveyed can exit. After completion of a funding process (hubs), the closure plate 54 is then retrieved by the spring 53. Fig. 9 shows - in two basic views - a particularly suitable in connection with the concept described above plastic container 1. This plastic container 1 is generally produced in the drawing or blow molding process, with two parallel extruded foils in a two-part form be shaped

According to the example shown in Fig. 9, film webs of different thicknesses d1 or d2, i.e. Stiffness, related and in such a way that the container half 1a provided with the filling / removal nozzle 6 is the relatively thicker (d1) and thus stiffer.

In connection with the arrangement according to the invention for pumping and dispensing, this conception has the particular advantages that the container half 1b, which is softer or more flexible due to the smaller thickness d2, collapses relatively easily and - as indicated by the arrow a - evenly, so that the container contents are ultimately good, ie largely completely, can be squeezed out. The lower representation of FIG. 9 in particular clearly shows how the more flexible container half 1b bites around the resulting inverted seam 1a / b and clings to the stiffer container half 1a from the inside. FIG. 10 shows a special feature relating to the hose bushing (corresponding to the detail C according to FIG. 9) through the cover 2 of the pressure vessel 3. If the filling / removal nozzle 6 of the plastic container 1 is drilled in the cover 2 opposite a small hole 60 relative to the outside diameter of the delivery hose 7, then the edge pressure resulting from the internal pressure in the delivery hose 7 and the restoring force of the constriction of the inserted delivery hose 7 is sufficient, to adequately seal the implementation.

Fig. 11 shows a plastic container 1 in a perspective view. This can be one made of one and the same foil material L, but also one made of differently rigid foil material according to FIG. 9. The particular embodiment shown in FIG. 11 is that the plastic container has so-called flow channels 65, which - relative to the outside of the container - are realized as raised bulges, in particular a good residual emptying is made possible via these flow channels 65.

The latter is to be explained in more detail in the form of detail D from FIG. 11 with reference to FIG. 12. An almost completely empty plastic container 1 is shown here. The collapsed container wall presses against the wall with the filling / removal nozzle 6 and squeezes the remaining volume empty. This can escape in particular via the flow channels 65 to the filling / removal nozzle 6. The particularly good residual emptying is further supported by the fact that the circumferential weld seam 70 of the plastic Fabric container 1 there is an annular channel 71, which absorbs the residual content and ultimately expresses it. In order to prevent the collapsed wall from sticking to the connecting piece 6, this has notches 72, so that the residual emptying is also promoted in this way.

In Fig. 13, a novel immersion tube 80 is shown, which is tightly inserted through the filling / removal nozzle 6 of the plastic container 1 and on which the delivery hose 7 is attached. The dip tube 80 has a plurality of holes 81 distributed over its length.

When the plastic container 1 collapses, its walls lie against the dip tube 80, so that ultimately only the remaining volume corresponding to the interior of the dip tube 80 remains. If this dip tube 80 is then inserted into a new plastic container 1, it will

remaining volume first applied. With this dip tube 80, a clean solution to the residual emptying problem is possible.

Fig. 14 shows an execution example L of a removal lance for a plastic container 1, which is molded in a manner known per se to an externally closed extension 86 (cf. DE-OS 39 28 855). This approach 86 can - as shown in Fig. 14 - in turn have a support on the plastic container 1 handle 87. 15, the handling of the plastic container 1 during filling and emptying is explained.

For filling, a cap 88 of the extension 86 is cut off (sketch 1) so that the container 1 can be filled. After the filling process itself (sketch 2) - cf. Reference number 89 - the filler neck, ie the open extension 86 closed again with a squish weld 90 (sketch 3). To remove the container contents, a removal of lance 91 is now pushed across attachment 86 - cf. Sketch 4. The removal of lance 91 is sealed on the two pierced walls of attachment 86 via the lips 92 that form. This sealing effect is further improved in the case of the art fabric container 1 illustrated with the aid of FIG. 9 with a stronger container wall. Advantageously, funnel-shaped bulges 93 are integrally formed on the shoulder 86 during production, which ensure that the removal of the lance 91 as the desired joints of the removal, for the exact positioning thereof. The contents of the container 1 can thus be removed via the bore 94 of the removal lance 91 and the delivery hose 7 attached to it or squeezed out.

The advantage of the removal explained with reference to FIG. 15 with the removal lance 91 which runs through the two walls of the projection 86 is that it is not pushed in parallel to the separating seam of the container halves. The known solution has proven to be not without problems since 86 density problems can occur due to the material thickness fluctuations in the area of the attachment.

With regard to the systems shown in the drawing, the following should also be noted: by simply repositioning the connections of the delivery hoses 7, 7 'on the flexible plastic container 1 to a container filled with cleaning solution, the entire conveyor line can be cleaned. The only place with one

Gap contamination possibility is possibly the

Sealing of the sleeve according to the exemplary embodiment according to FIG. 7. The sleeve, however, can be easily released from the coupling and cleaned by simply unlocking it. The following connection is of particular importance in connection with this invention: The conveyance of various highly viscous and / or liquids with lumpy components by pressurizing a flexible plastic container in a pressure container; - The arrangement of a flexible plastic container in the pressure vessel ensures an extensive emptying of residual quantities; - by constantly changing art containers and

The smooth flow stream channel results in very favorable microbiological behavior; - If the pressurized plastic filled with the material to be conveyed is kept in contact with water, this results in a reduction in the specific

Surface and thus an extension of the shelf life of oxygen sensitive products. (This applies particularly to partial withdrawals.

In general, the following still applies: For numerous oxygen-sensitive products, the permeation of atmospheric oxygen must be kept low by a suitable choice of material and / or layering of the plastic container. This is particularly important for flexible plastic containers that are filled and emptied without air

become. The surface increases with partial removal in relation to the filled volume, so that originally good permeation values can become very bad depending on the degree of filling. Under unfavorable operating conditions (long service life with low residual volume and very sensitive contents), this can ultimately lead to malfunctions.

This behavior can only be countered to a limited extent with other materials. For this reason, pressurized water is preferably used instead of compressed air for the pressurization of the transport container. Due to the complete containment of the transport container in the water, which under certain circumstances can even be tempered by circulating cooling, the dwell time is thus relatively long even in the opened state. Since an uninterrupted cold chain to the consumer should be guaranteed for many foods, overall, clearly cheaper container material can be selected.

Claims

PATENT CLAIMS

1. Arrangement for pumping and dispensing highly viscous liquids and / or similar liquids with a high solids content or solids in larger segments,

in particular for use in viscous foodstuffs, the material to be conveyed being kept in a flexible, collapsible plastic is provided,

which is inserted on the one hand into a pressure vessel which is connected to a pressure generator via which the space between the plastic container and the pressure vessel is acted upon by a pressure medium, in particular air or water, and

which, on the other hand, is connected in a pressure-tight manner to a conveying hose which delivers the material to be conveyed at the end, characterized in that

that the conveying hose is assigned a squeezing device realized by a plurality of functionally coordinated squeezing elements, via which the conveyed material is conveyed through the conveying hose.

2. Spreading arrangement according to claim 1,

characterized,

that the conveying hose viewed in the conveying direction is assigned a plurality, in particular four, of leek pinch valves which are actuated in a coordinated manner and enclose and discharge a predetermined amount of the conveyed material in the conveying hose in terms of volume.

3. Ausbringanordndung according to claim 1 or 2,

characterized,

that, viewed in the direction of conveyance, a first shut-off pinch valve, a relief squeeze valve, a metering squeeze valve which determines the volume of the delivery quantity to be discharged and a second shut-off pinch valve are arranged, and

that the pinch valves can be connected to the pressure generator via a control valve.

4. spreading arrangement according to claim 3,

characterized,

that the pinch valves connect the delivery hose to one, especially all pinch valves,

Wrap in the guide hose.

5. spreading arrangement according to claim 3 or 4,

characterized,

that the effective working pressure on the pinch valves is greater than that effective on the plastic container.

6. spreading arrangement according to claim 1,

characterized,

that the pinch valves through

the squeeze rollers of a multi-arm, in particular four-arm hose squeeze pump are realized, a corresponding amount of the conveyed material being pressed into the conveying hose between a pair of arms and being discharged at the end.

7. Spreading arrangement according to claim 6,

characterized,

that the end of the delivery hose has a particularly interchangeable and self-closing closure element, in particular in the unpressurized state.

8. Spreading arrangement according to one of claims 1 to 7, characterized in

that to prevent dripping at the end of a delivery cycle, the squeezing device can be controlled in such a way that a suction effect takes effect at the end of the delivery hoses.

9. Spreading arrangement according to one of claims 1 to 8, characterized in

that the delivery hose is connected at the end to a dispenser head which has a quill which can be driven by a geared motor and which connects via a circular groove to the delivery channel adjoining the pinch valve.

10. Spreading arrangement according to one of claims 1 to 8, characterized in

that the end of the delivery hose is connected to a dispense head, which can be closed by a spring-loaded locking rod, for

Delivery hose towards the open cylinder interior is realized.