CA2079483A1 - Mechanical coupling for multiple path containers for viscous fluids - Google Patents
Mechanical coupling for multiple path containers for viscous fluidsInfo
- Publication number
- CA2079483A1 CA2079483A1 CA002079483A CA2079483A CA2079483A1 CA 2079483 A1 CA2079483 A1 CA 2079483A1 CA 002079483 A CA002079483 A CA 002079483A CA 2079483 A CA2079483 A CA 2079483A CA 2079483 A1 CA2079483 A1 CA 2079483A1
- Authority
- CA
- Canada
- Prior art keywords
- coupling
- valve
- fluid
- container
- hydraulically
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000010168 coupling process Methods 0.000 title claims abstract description 153
- 230000008878 coupling Effects 0.000 title claims abstract description 150
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 150
- 239000012530 fluid Substances 0.000 title claims abstract description 62
- 238000009423 ventilation Methods 0.000 claims description 20
- 230000003213 activating effect Effects 0.000 claims description 10
- 230000001419 dependent effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 15
- 229920000297 Rayon Polymers 0.000 abstract description 4
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 235000013405 beer Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0288—Container connection means
- B67D7/0294—Combined with valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- External Artificial Organs (AREA)
- Reciprocating Pumps (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Pens And Brushes (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
ABSTRACT
The present invention relates to a device that is used to secure a coupling for a re-useable container used for viscose fluids (e.g., lubricating oils) during a coupling procedure; this is done mechanically and is secured hydraulically in the coupled state. The coupling consists of coupling half A in which, in the case of a re-useable container, a plurality of valves are integrated, and the coupling half B, which is arranged with a plurality of valves, in the particular dispensing system.
The present invention relates to a device that is used to secure a coupling for a re-useable container used for viscose fluids (e.g., lubricating oils) during a coupling procedure; this is done mechanically and is secured hydraulically in the coupled state. The coupling consists of coupling half A in which, in the case of a re-useable container, a plurality of valves are integrated, and the coupling half B, which is arranged with a plurality of valves, in the particular dispensing system.
Description
2 2Q~83 ~echnical Domain The present invention relates to a mechanical coupling, one coupling half A of which is arranged on a re-useable container, and the other coupling half B of which is a component of a dispensing system for viscose fluids (e.g. lubricating oils) as set out in the preamble to claim 1.
Prior Art It is known that mechanical couplings for low-viscosity liquids and beverages (such as beer) can be arranged on kegs as so-called KEG-stoppers, the viscosity characteristics of the liquids being almost independent of a particular operating temperature, and which are, for this reason, disregarded. Unknown up to now are solutions for fluids of high or apparent viscosity, such lubricating oils or semi-solid greases, e.g. motor and/or transmission oils or semi-solid greases that are based on mineral oils or semi-synthetic, synthetic or natural oils, the latter, for example, being rapeseed oil, as well as base oils ~or semi-solid greases. In contrast to the liquids quoted above, these fluids represent another class of materials, with completely different physical and chemical characteristics that have a considerable effect on their delivery (dispensing) properties and which, in its turn, is dependent on operating temperature and--in the present case negligible--operating pressure, and which are expressed in the particular viscosity/temperature behaviour (viscosity index). These viscosity characteristics are assigned to each liquid and gaseous substance: in and of themselves, they are not desirable for delivery processes at high viscosities although they have to be accepted from the material standpoint.
In their dependency on temperature, as lubricants they can only be affected within a very limited framework, e.g., by special additives in the case of multi-range and light-duty oils.
According to its definition, viscosity is a substance value thak - ^ .
2~?79~
expresses the internal resistance of a flow, which is caused by a velocity gradient in a plane that is perpendicular to the direction of flow (adhesion of the fluid to the wall of a pipe, or the total flow velocity in the centre of the pipe), and which results in a shearing stress in the transverse direction (shear flow)O This internal resistance incorporates internal friction, leads to internal heating, and thus to a loss of energy (dissipation); it also becomes apparent technically in the form of a loss of pressure in the pipeline in the direction of flow;
this loss can be considerable--generally as a function of viscosity.
These physical relationships have to be considered, in particular in the case of highly viscose fluids, and in an actual hydraulic system they are expressed in the configuration and the arrangement o~ the structural elements, e.g., of the flow cross-seckions. The higher the viscosity during the delivery process, e~g., as a result of low temperatures, the more important it is to consider this necessity from the point of view of its effect on the external and internal configuration, e.g., also from the standpoint of operating and functional safety, because of the high hydraulic pressures that are needed.
The containers on which, up to now, these couplings have been arranged, are used to transport, store, and dispense these low-viscosity liquids. The physical length and/or branching that is seen in the dispensing systems, with which these containers are coupled, and their dispensing rates per unit time, are relatively small (dispensing systems for beer). The required hydraulic forces N are correspondingly low, N being defined by the product of the operating pressure p times the delivery flow V (N - p x V). In general, the required operating pressure depends on operating viscosity. Thus, it is sufficient to pressurize such a re-useable container by pressure from an outboard pressure source (e.g., carbon dioxide cylinders that are used when beer is ~Q~
dispensed) in order to complete a delivery process. If the compressed-gas cylinder is empty, no liquid will be dispensed; in addition, it is extremely difficult to automate such a system, and it represents a specific potential for danger if it is operated incorrectly.
In the case of dispensing systems for low-viscosity liquids, including large systems of this kind, and which, generally speaking, depend very little on temperature, energy is generally introduced into the system behind (upstream from) the container and, as a rule, this energy introduction process is automated (e.g., full-hose system for dispensing calibrated quantities of fuels). Because of the almost constant operating pressure that is needed for delivery, pressure relief valves can be arranged without any problems on the pressure side, where they serve as hydraulic safety elements; the opening pressure of such valves just has to be greater than the operating pressure that is required in each instance. If, when the system is non-operational, it is subjected to external heating (e.g., as the result of sunlight), the static pressure within the system increases and, under some circumstances, the pressure relief valve can open. This pressure-side function (which is in compliance with regulations) of such a pressure-relief valve does not exist in the case of fluids whose viscosity depends on temperature; in such a hydraulic system, what would result would be a hydraulic short-circuit, when the fluid does not reach the dispensing point but, rather, is returned to the container.
DE-OS 16 57 209 proposes a solution of this kind, this being a coupling that is designated as a KEG fitting for low-viscosity beer in a small dispensing system. Energy is introduced by applying pressure to a keg, using carbon dioxide. on the keg side, the coupling has only a relief (non-return) valve that is opened during the coupling procedure. Outside the coupling, a hand-operated valve or cock of conventional construction can be ~a7~
provided either in the discharge line or in the carbon dioxide feedline "as desired." DE-GM 83 20 134 describes a replaceable air filter of a filling apparatus for liquid containers; just how this is intended to function when liquids are dispensed is not addressed, for no non-return valves are provided. DE-OS 30 ~2 672 describes a dispensing column for low-viscosity liquid gas, a hydraulic security system that functions as an expansion vessel being connected in parallel on the pressure side within a full-hose system. This document also refers to a safety valve as a replacement, the opening pressure of which is higher than the operating pressure. How and where this valve is incorporated hydraulically remains undisclosed. It is not a component of the low-pressure side of the system which, for the remainder, incorporates no coupling for, as a rule, what is involved is a container in the form of a stationary collector tank le.g., a below-ground tank). FR-OS 25 27 195 describes a dispensing system that is based on the full-hose principle and is used for low-viscosity fuels; it incorporates a safety valve that is connected hydraulically and in parallel to the pump, between its pressure and its suction side; the opening pressure of this valve must be greater than the operating pressure within the full-hose system. When the fluid, the viscosity of which is dependent upon temperature, is exposed to cold temperatures, the hydraulic resistance in the full-hose system can increase so sharply that the working pressure is higher than the opening pressure of the valve, which results in a hydraulic short circuit. This document contains no mention of any coupling of the fluid container and the dispensing system.
Th~ Invention Proceeding from this prior art, the following task definition for re-useable container systems is relevant for professional, industrial dispensing systems that are used for viscose fluids, in particular, if the operating viscosities of these fluids can 2~ 3 be high to very high as a function of temperature (e.g., in the case of transmission oils that are affected by cold temperatures).
- The power section of the hydraulic system is arranged after the intersection point (coupling) between the re-useable container and the dispensing point(s) (e.g., an electrically driven spur-gear pump of appropriate po~er that can be automated).
- The hydraulic point of interception (coupling) lies in the suction side branch of the dispensing system, which precedes a re-useable container.
- The point of intersection (coupling) is, in one of its halves, a component of the re-useable container (coupling half A), and in the other is a component of the suction line that leads to the pump (coupling half B).
- In order to ensure hydraulic safety, a static back relief valve on the suction side, connected in parallel in the coupling half B; its opening pressure is considerably lower than the operating pressure of the system and is thus completely independent of this.
- With the mechanical coupling procedure, the point of intersection * will be automatically activated hydraulically;
* will incorporate mechanical safeguards against loosening or incorrect operation;
* additional mechanical and geometrical identification features will be introduced to prevent coupling halves A and B, not intended for the coupling, from being connected to it.
k ~3 3 These problems have been solved with the features set out in the defining portion of claim 1.
These tasks have been solved by a structural unit that is in the form of a mechanical fluid coupling and consists of two coupling halves A and B; on the suction side, this coupling is arranged in the complete fluid system on the re-useable container; it forms the point of intersection of this container, that is replaceable, and the stationary dispensing system. The coupling half A is an integral component of the particular transportable and replaceable re-useable container; in contrast to this, the coupling half B is installed on a one-time basis in the suction line of the dispensing system. As a result of the coupling procedure, the non-return valve in the coupling half A is opened mechanically by the coupling half B. In contrast to this, the second non-return valve (suction valve) in coupling half ~ is opened first and only on each particular dispensing procedure, by the suction action of the pump in the dispensing system;
otherwise it remains closed, particularly if no re-useable container is in place and connected; thus, it prevents the suction line of the dispensing svstem from running dry.
Connected hydraulically and in parallel to this valve in coupling half B is the suction side back relief valve, which in the static state of the dispensing system reduces any possible hydraulic over-pressure (e.g., if the fluid expands because of the effects of heat) through the coupling half A in the re-useable container, and which could lead to a dispensing line bursting. A
ventilation and/or a moisture filter is integrated into coupling half B in order to provide for ventilation of the re-useable container, and in the coupled state this is connected through coupling half A to the re-useable container hydraulically or pneumatically; in the operating state, this prevents the ingress of dirt and/or moisture into the re-useable container. In order to avoid interruption of the dispensing operation when the re-useable container is empty, there can also be two re-useable 2~ . 83 containers arranged on the suction side ahead of the delivery pump, each of these having two complete couplings, it being possible to switch between the delivery lines of these by way of a three-two-way valve; this valve can be actuated manually or electrically, or automatically and electrically.
Brief De~cription o~ the Drawings Preferred embodiments of the present invention are shown in the drawings appended hereto, which show the following:
igure 1: a hydraulic system diagram for the complete fluid coupling (coupling closed; one dispensing point;
shut-off valve and ventilation and bleed valve coupled mechanically);
Figure 2: a hydraulic system diagram for the complete fluid system with two re-useable containers connected in parallel, which can be selected in alternation (coupling closed; three dispensing points; shut-off valve and ventilation valve as well as the pressure relief valve separated);
Figure 3: one embodiment of a complete fluid coupling in longitudinal cross section, in which the mechanical and the hydraulic coupling are formed separat~ly (switch position: mechanically coupled, hydraulically locked);
Figure 4: the fluid coupling shown in figure 3, in a front and side view;
Figure 5: a longitudinal cross section through the fll~id coupling of basic construction as in figure 3, although with a mechanical coupling effected by a threaded connection (switch position in the intermediate position: not yet fully coupled mechanically, but still locked hydraulically);
9 ~7~`~83 igure 6: a preferred embodiment of the complete coupling as in figure 3 in longitudinal cross section, although with a mechanical coupling effected by bayonet connector and with ~echanical safety by means of a pin that is operated radially (switch position: mechanically coupled, hydraulically not coupled);
Figure 7: the embodiment shown in figure 6 on a section plane that is transverse to the axis of the coupling in the parting line of both coupling halves A and B with a pin that is operated by means of a radially moved knob;
Figure 8: the guideway for the pin;
Figure 9: a partial sectional plane transversely through the parting line of both coupling halves A and B with a pin that is activated by means of a radially moved knob;
Figure 10: the coupling as a component of a mobile complete fluid system as a preferred embodiment of a specific dispensing apparatus.
De~cription of the Inve~tion Figure 1 shows the simplest version of the practical hydraulic working diagram of the complete fluid system (3), which incorporates a dispensing tap (20) as the dispensing point. It consists of a hydraulic supply device (1~) with a pump (21) and a drive motor t22); the pressure side (19) of the dispensing system is adjacent to and behind this. Ahead of the supply device (20) there is the suction side (2) with the system suction line (10) and the coupling half B (9), the latter, together with the coupling half A (4), being arranged on the container (5), and forming the structural unit of the coupling (1). The coupling half A (4) together with the container (5) and the integrated ~entilation valve (8) form the re-useable container (24): the container suction line (7) represents the hydraulic connection .. .
.
. ~ ' -. ' ~
..~
.
"~ : .
;~:~?7~ 33 from the deepest point of the container (5) to the coupling half A (4); the fluid (25) that is to be delivered is located within the container (5). When the structural unit coupling (1) and the re~useable container (24) are coupled mechanically and hydraulically, the container (23) represents the functionally ready container (23) as set out in the introductory part; it is in its turn a component of the suction side (2) of the fluid system (3). The coupling halves A (4) and B (9) have a parting line (27). The coupling half A (4) has a ventilating valve (8) and a shut-off valve (6), which are opened positively and mechanically during the coupling process with coupling half B (9) by the coupling device (17); during storage and during transportation of the re-useable container (24), they are closed.
In the coupled state, both valves (6 and 8), which have a mechanically rigid connection (78), that in its turn is returned to its closed end position by a spring (79) are open; thus, the venti~ation valve (8) serves as a bleed valve. The manual mechanical coupling procedure for coupling half B (9) to coupling half A (4) is symbolized by the activating device (16) with the coupling device (17). The coupling half B (9) incorporates a ventilation channel (13) that leads to the filter unit (48), that consists of the moisture filter (14) and the ventilation filter (15): important hydraulic components are the suction valve (11) and the back relief valve (12) that are connected in parallel.
During operation of the pump (21) the suction valve (11) opens, the fluid (25) is drawn through the container suction line (7) and the system suction line (10) and dispensed via the pressure side (19) at the opened tap (20). When the pump (21) is at rest, the suction valve (11) is closed; simultaneously, because of the effects of external heat on the fluid system (3), a static over-pressure could build up as a result of the thermal expansion of the fluid, which returns the expansion volume throuyh the opening back relief valve (12) into the container (5) and then bleeds this off through the ventilation/bleed valve (8) and the ventilation channel (13) and the filter unit (48).
7~3~.133 Figure 2 shows the hydraulic workiny diagram of an expanded complete fluid system (3) with three taps (20) as dispensing points, and with a three/two-way valve (26) with the alternative hydraulic switching possibility for two containers (23), for example, with similar structural elements as shown in figure 1 (see the description for figure 1), with one exception. This applies to the ventilating valve (8) that only has one function, for ventilation, and which, in contrast to figure 1, is not coupled mechanically to its shut-off valve (6) and has a separate spring (79), and which is opened during the coupling proceduxe.
Connected hydraulically and in parallel, although with an opposing effective direction, there is an over-pressure valve (80) that responds exclusively to an internal over-pressure and opens accordingly; it can be connected through various relief paths to the atmosphere and in the present case is connected to the line of the relief valve. It is also conceivable that excess pressure in the re-useable container (24) be released directly to the atmosphere, which is to say without passing through coupling half B (9), which would also mean greater safety for the barrel or cask, e.g., during transportation.
In figure 3, the mechanical coupling is effected in the parting line (27) of the coupling half A (4), as a component of the re-useable container (24) with the container (5), the fluid, and the container suction line ~7), and the coupling half B (9), with the system suction line connector (28); it is stopped by means of a horizontal slide seat (38). The hydraulic unlocking that follows is effected by the vertical depression of the hand-operated l~ver (29) against the force of the activating spring (31), and its s~bsequent rotation in order to lock it into the recess (39). At the same time, the slide body (32) with the slide sleeve (33) is moved downwards against the force of the activating spring (31) and presses against the coupling seal (34) and simultaneously opens the suction channel (35) by moving externally across the suction drillings (36) of the container suction line (7), which 2~ 3 represents the opening of the shut-off valve (6) and opens the seal seat (37) of the ventilating valve (8) and because of the sealing action of the inside diameter of the coupling seal (34) on the outside diameter of the container suction line (7) prevents a short circuit of the hydraulic suction side with the pneumatic ventilation side of the coupling. The ventilation channel (13) leads to the combined moisture filter (14) and ventilation filter (15). The coupling seal (34), the seal seat (37) and the seal spring (49) ensure that the re-useable container (24) will prevent any fluid (25) from escaping and will prevent the ingress of dirt in general, in all states of its transportation and storage, as long as the ~luid coupling (54) is activated by the coupling of the coupling halves A (4) and B (9).
Hydraulic connection to the system suction line connector (28) is effected from the suction channel (35), through the suction seat (39) and the suction spring (40) of the suction valve (11). The back relief valve (12) together with the valve ball (42) and the relief spring (43) are integrated into the disk (41) of the suction valve (11). In order to prevent any mix-up of re-useabl~
containers (24) that are used for different fluids (25), e.g., motor oil and brake fluid, on the coupling surface (59) the diameter and the level are each kept different; for identical fluids (25), these dimensions ar~ each constant for a coupling half A (4) and B (9) for a fluid coupling (54).
In figure 4, which is an outside view of figure 3, the re-useable container (24) extends as far as the parting line (27) of the two coupling halves A (4) and B (9). Mechanical coupling is effected with the slide seat ~38). The hand-operated lever (29~ switches the coupling to hydraulic readiness for use when it is depressed and locked in the recess (30). During the delivery process of the pump, the fluid (25) is drawn from the container (5) through the container suction line ~7) and the two coupling halves A (4) and B (9)/ out of the container (5), and into the system suction line (28), and from there into the fluid system (3).
~:Q~83 In figure 5, the hand-opexated lever (29) serves exclusively to screw down the coupling half B (9) onto the coupling half A (4) by means of a screw thread (44). Because of the axial movement when it is being screwed down, the coupling is connected mechanically and at the same time locked hydraulically semi~
automatically.
In particular, figure 6 shows the two coupling halves A (4) that is integrated on the container (5), and B (9) that has an outlet to the system (64). A bayonet connector (45) serves to depress the coupling half B (9) against the force of the operating spring (31) of coupling half A (4) and its subsequent rotation to ensure mechanical coupling and simultaneously semi-automatic unlocking.
Both coupling halves A (~) and B (9) have a common parting line (27); further hydraulic function is described in relation to figure 3. In the area of the line of separation (7) of the two coupling halves A (4) and B (9) there is a ring (60) that belongs to coupling half A (4); on its outside diameter this ring incorporates at least one recess (61). At least one pin (62) is located in the extended section (65) of the housing of coupling half B (9). There is at least one pin (62) which, in the coupled state, engages in the corresponding recess (61). The pin (62) is guided over a pin (66) to the outside diameter of the housing section (65) where there is at least one activating knob (67);
the end position of the pin (62) in the locked state is ensured by way of a spring (68). In addition, the activating knob (67) serves as a grip for introducing a torsional moment during the coupling procedure; a corresponding second handle knob (69) serves the same purpose; it can, if necessary, be configured as a second activatiny knob (in contrast to the drawing shown in figure 1, the ring (60) can alternatively be located beneath the parting line (70); then the overlapping housing section (65) has to be configured so as to be appropriately deeper).
2~ .iB3 In figure 7, the radial operation of the pin (62) with its engagement in the recess (61) is effected exclusively by a radial movement (77) of the activating knob t67) against the force of the spring (68); these are integrated into coupling half B (9)0 The two recesses (61), of which only one is effective in the upper area of the sectional drawing, are a component of coupling hal~ A (4). During rotation of the bayonet connector, the pin (62) is guided along the pin guideway (63) which, in figure 8, is configured on the partial periphery.
In figure 8, the pin guideway (63) is shown in a side viewl in which the pin (62) is guided during the coupling process until it reaches its end position in the corresponding recess (61) shown in its simplest geometrically circular shape. The guideway (63) is not configured so as to be uninterrupted, but incorporates an intermediate point (76), which, in particular, of necessity provides a stable intermediate position in the event that the coupling is not effected correctly in the end position, this preventing an unintentional and complete opening of the coupling;
the intermediate position also permits a controlled depressurization of the container should a pneumatic over-pressure have built up within this; in addition, this provides a positive indication for the person who is carrying out the coupling procedure when this is being done manually, and ensures additional safety during the coupling procedure. Opposite the pivot sleeve, there is a sleeve (71) which has only an operating function, but no safety or identification function. Similarly, at the same place there is an identical recess (61) in coupling half A (4), which ensures that during each coupling process when there is only one pin (62), this ordinarily finds at least the matching recess (61) in its end position and does so in each instance.
In figure 9, the radial activation of the pin (62) with its engagement in the recess (61) is effected by way of a rotational 2~ 83 movement (72) of the pivot sleeve (73) about the point of rotation ~74). The pivoting motion (72) represents an additional manual operation, which provides additional security for the coupling procedure. ~uring the rotational movement of the coupling half B (9), the tip (75) of the pin (62) that is out of detent slides along the pin guideway (63) of coupling half A (4) until such time as it has achieved its end position and the pin (62) enters into detent in the recess (61), whereupon the pivot sleeve (73) is simultaneously guided back into its radial end position.
In figure 10, the fluid coupling (54) consisting of the coupling half A (4) and the coupling half B (9) with the container (5) is shown as a component of a mobile fluid system (3) for a dispensing point; the re-useable container (24) consists, in its turn, of the coupling half A (4) and the container (5). All the components of the fluid system (3) are integrated in or on the housing (50); in particular, wheels (51) make the system mobile;
energy is supplied through an electrical plug (52) and a cable (53). A dispensing nozzle (55) with a hose (56) serves as a dispensing element, and a quantity display (57), and a quantity selector (58) complete the external appearance of the system which, in the present drawing, is shown, for example, for self-service.
Prior Art It is known that mechanical couplings for low-viscosity liquids and beverages (such as beer) can be arranged on kegs as so-called KEG-stoppers, the viscosity characteristics of the liquids being almost independent of a particular operating temperature, and which are, for this reason, disregarded. Unknown up to now are solutions for fluids of high or apparent viscosity, such lubricating oils or semi-solid greases, e.g. motor and/or transmission oils or semi-solid greases that are based on mineral oils or semi-synthetic, synthetic or natural oils, the latter, for example, being rapeseed oil, as well as base oils ~or semi-solid greases. In contrast to the liquids quoted above, these fluids represent another class of materials, with completely different physical and chemical characteristics that have a considerable effect on their delivery (dispensing) properties and which, in its turn, is dependent on operating temperature and--in the present case negligible--operating pressure, and which are expressed in the particular viscosity/temperature behaviour (viscosity index). These viscosity characteristics are assigned to each liquid and gaseous substance: in and of themselves, they are not desirable for delivery processes at high viscosities although they have to be accepted from the material standpoint.
In their dependency on temperature, as lubricants they can only be affected within a very limited framework, e.g., by special additives in the case of multi-range and light-duty oils.
According to its definition, viscosity is a substance value thak - ^ .
2~?79~
expresses the internal resistance of a flow, which is caused by a velocity gradient in a plane that is perpendicular to the direction of flow (adhesion of the fluid to the wall of a pipe, or the total flow velocity in the centre of the pipe), and which results in a shearing stress in the transverse direction (shear flow)O This internal resistance incorporates internal friction, leads to internal heating, and thus to a loss of energy (dissipation); it also becomes apparent technically in the form of a loss of pressure in the pipeline in the direction of flow;
this loss can be considerable--generally as a function of viscosity.
These physical relationships have to be considered, in particular in the case of highly viscose fluids, and in an actual hydraulic system they are expressed in the configuration and the arrangement o~ the structural elements, e.g., of the flow cross-seckions. The higher the viscosity during the delivery process, e~g., as a result of low temperatures, the more important it is to consider this necessity from the point of view of its effect on the external and internal configuration, e.g., also from the standpoint of operating and functional safety, because of the high hydraulic pressures that are needed.
The containers on which, up to now, these couplings have been arranged, are used to transport, store, and dispense these low-viscosity liquids. The physical length and/or branching that is seen in the dispensing systems, with which these containers are coupled, and their dispensing rates per unit time, are relatively small (dispensing systems for beer). The required hydraulic forces N are correspondingly low, N being defined by the product of the operating pressure p times the delivery flow V (N - p x V). In general, the required operating pressure depends on operating viscosity. Thus, it is sufficient to pressurize such a re-useable container by pressure from an outboard pressure source (e.g., carbon dioxide cylinders that are used when beer is ~Q~
dispensed) in order to complete a delivery process. If the compressed-gas cylinder is empty, no liquid will be dispensed; in addition, it is extremely difficult to automate such a system, and it represents a specific potential for danger if it is operated incorrectly.
In the case of dispensing systems for low-viscosity liquids, including large systems of this kind, and which, generally speaking, depend very little on temperature, energy is generally introduced into the system behind (upstream from) the container and, as a rule, this energy introduction process is automated (e.g., full-hose system for dispensing calibrated quantities of fuels). Because of the almost constant operating pressure that is needed for delivery, pressure relief valves can be arranged without any problems on the pressure side, where they serve as hydraulic safety elements; the opening pressure of such valves just has to be greater than the operating pressure that is required in each instance. If, when the system is non-operational, it is subjected to external heating (e.g., as the result of sunlight), the static pressure within the system increases and, under some circumstances, the pressure relief valve can open. This pressure-side function (which is in compliance with regulations) of such a pressure-relief valve does not exist in the case of fluids whose viscosity depends on temperature; in such a hydraulic system, what would result would be a hydraulic short-circuit, when the fluid does not reach the dispensing point but, rather, is returned to the container.
DE-OS 16 57 209 proposes a solution of this kind, this being a coupling that is designated as a KEG fitting for low-viscosity beer in a small dispensing system. Energy is introduced by applying pressure to a keg, using carbon dioxide. on the keg side, the coupling has only a relief (non-return) valve that is opened during the coupling procedure. Outside the coupling, a hand-operated valve or cock of conventional construction can be ~a7~
provided either in the discharge line or in the carbon dioxide feedline "as desired." DE-GM 83 20 134 describes a replaceable air filter of a filling apparatus for liquid containers; just how this is intended to function when liquids are dispensed is not addressed, for no non-return valves are provided. DE-OS 30 ~2 672 describes a dispensing column for low-viscosity liquid gas, a hydraulic security system that functions as an expansion vessel being connected in parallel on the pressure side within a full-hose system. This document also refers to a safety valve as a replacement, the opening pressure of which is higher than the operating pressure. How and where this valve is incorporated hydraulically remains undisclosed. It is not a component of the low-pressure side of the system which, for the remainder, incorporates no coupling for, as a rule, what is involved is a container in the form of a stationary collector tank le.g., a below-ground tank). FR-OS 25 27 195 describes a dispensing system that is based on the full-hose principle and is used for low-viscosity fuels; it incorporates a safety valve that is connected hydraulically and in parallel to the pump, between its pressure and its suction side; the opening pressure of this valve must be greater than the operating pressure within the full-hose system. When the fluid, the viscosity of which is dependent upon temperature, is exposed to cold temperatures, the hydraulic resistance in the full-hose system can increase so sharply that the working pressure is higher than the opening pressure of the valve, which results in a hydraulic short circuit. This document contains no mention of any coupling of the fluid container and the dispensing system.
Th~ Invention Proceeding from this prior art, the following task definition for re-useable container systems is relevant for professional, industrial dispensing systems that are used for viscose fluids, in particular, if the operating viscosities of these fluids can 2~ 3 be high to very high as a function of temperature (e.g., in the case of transmission oils that are affected by cold temperatures).
- The power section of the hydraulic system is arranged after the intersection point (coupling) between the re-useable container and the dispensing point(s) (e.g., an electrically driven spur-gear pump of appropriate po~er that can be automated).
- The hydraulic point of interception (coupling) lies in the suction side branch of the dispensing system, which precedes a re-useable container.
- The point of intersection (coupling) is, in one of its halves, a component of the re-useable container (coupling half A), and in the other is a component of the suction line that leads to the pump (coupling half B).
- In order to ensure hydraulic safety, a static back relief valve on the suction side, connected in parallel in the coupling half B; its opening pressure is considerably lower than the operating pressure of the system and is thus completely independent of this.
- With the mechanical coupling procedure, the point of intersection * will be automatically activated hydraulically;
* will incorporate mechanical safeguards against loosening or incorrect operation;
* additional mechanical and geometrical identification features will be introduced to prevent coupling halves A and B, not intended for the coupling, from being connected to it.
k ~3 3 These problems have been solved with the features set out in the defining portion of claim 1.
These tasks have been solved by a structural unit that is in the form of a mechanical fluid coupling and consists of two coupling halves A and B; on the suction side, this coupling is arranged in the complete fluid system on the re-useable container; it forms the point of intersection of this container, that is replaceable, and the stationary dispensing system. The coupling half A is an integral component of the particular transportable and replaceable re-useable container; in contrast to this, the coupling half B is installed on a one-time basis in the suction line of the dispensing system. As a result of the coupling procedure, the non-return valve in the coupling half A is opened mechanically by the coupling half B. In contrast to this, the second non-return valve (suction valve) in coupling half ~ is opened first and only on each particular dispensing procedure, by the suction action of the pump in the dispensing system;
otherwise it remains closed, particularly if no re-useable container is in place and connected; thus, it prevents the suction line of the dispensing svstem from running dry.
Connected hydraulically and in parallel to this valve in coupling half B is the suction side back relief valve, which in the static state of the dispensing system reduces any possible hydraulic over-pressure (e.g., if the fluid expands because of the effects of heat) through the coupling half A in the re-useable container, and which could lead to a dispensing line bursting. A
ventilation and/or a moisture filter is integrated into coupling half B in order to provide for ventilation of the re-useable container, and in the coupled state this is connected through coupling half A to the re-useable container hydraulically or pneumatically; in the operating state, this prevents the ingress of dirt and/or moisture into the re-useable container. In order to avoid interruption of the dispensing operation when the re-useable container is empty, there can also be two re-useable 2~ . 83 containers arranged on the suction side ahead of the delivery pump, each of these having two complete couplings, it being possible to switch between the delivery lines of these by way of a three-two-way valve; this valve can be actuated manually or electrically, or automatically and electrically.
Brief De~cription o~ the Drawings Preferred embodiments of the present invention are shown in the drawings appended hereto, which show the following:
igure 1: a hydraulic system diagram for the complete fluid coupling (coupling closed; one dispensing point;
shut-off valve and ventilation and bleed valve coupled mechanically);
Figure 2: a hydraulic system diagram for the complete fluid system with two re-useable containers connected in parallel, which can be selected in alternation (coupling closed; three dispensing points; shut-off valve and ventilation valve as well as the pressure relief valve separated);
Figure 3: one embodiment of a complete fluid coupling in longitudinal cross section, in which the mechanical and the hydraulic coupling are formed separat~ly (switch position: mechanically coupled, hydraulically locked);
Figure 4: the fluid coupling shown in figure 3, in a front and side view;
Figure 5: a longitudinal cross section through the fll~id coupling of basic construction as in figure 3, although with a mechanical coupling effected by a threaded connection (switch position in the intermediate position: not yet fully coupled mechanically, but still locked hydraulically);
9 ~7~`~83 igure 6: a preferred embodiment of the complete coupling as in figure 3 in longitudinal cross section, although with a mechanical coupling effected by bayonet connector and with ~echanical safety by means of a pin that is operated radially (switch position: mechanically coupled, hydraulically not coupled);
Figure 7: the embodiment shown in figure 6 on a section plane that is transverse to the axis of the coupling in the parting line of both coupling halves A and B with a pin that is operated by means of a radially moved knob;
Figure 8: the guideway for the pin;
Figure 9: a partial sectional plane transversely through the parting line of both coupling halves A and B with a pin that is activated by means of a radially moved knob;
Figure 10: the coupling as a component of a mobile complete fluid system as a preferred embodiment of a specific dispensing apparatus.
De~cription of the Inve~tion Figure 1 shows the simplest version of the practical hydraulic working diagram of the complete fluid system (3), which incorporates a dispensing tap (20) as the dispensing point. It consists of a hydraulic supply device (1~) with a pump (21) and a drive motor t22); the pressure side (19) of the dispensing system is adjacent to and behind this. Ahead of the supply device (20) there is the suction side (2) with the system suction line (10) and the coupling half B (9), the latter, together with the coupling half A (4), being arranged on the container (5), and forming the structural unit of the coupling (1). The coupling half A (4) together with the container (5) and the integrated ~entilation valve (8) form the re-useable container (24): the container suction line (7) represents the hydraulic connection .. .
.
. ~ ' -. ' ~
..~
.
"~ : .
;~:~?7~ 33 from the deepest point of the container (5) to the coupling half A (4); the fluid (25) that is to be delivered is located within the container (5). When the structural unit coupling (1) and the re~useable container (24) are coupled mechanically and hydraulically, the container (23) represents the functionally ready container (23) as set out in the introductory part; it is in its turn a component of the suction side (2) of the fluid system (3). The coupling halves A (4) and B (9) have a parting line (27). The coupling half A (4) has a ventilating valve (8) and a shut-off valve (6), which are opened positively and mechanically during the coupling process with coupling half B (9) by the coupling device (17); during storage and during transportation of the re-useable container (24), they are closed.
In the coupled state, both valves (6 and 8), which have a mechanically rigid connection (78), that in its turn is returned to its closed end position by a spring (79) are open; thus, the venti~ation valve (8) serves as a bleed valve. The manual mechanical coupling procedure for coupling half B (9) to coupling half A (4) is symbolized by the activating device (16) with the coupling device (17). The coupling half B (9) incorporates a ventilation channel (13) that leads to the filter unit (48), that consists of the moisture filter (14) and the ventilation filter (15): important hydraulic components are the suction valve (11) and the back relief valve (12) that are connected in parallel.
During operation of the pump (21) the suction valve (11) opens, the fluid (25) is drawn through the container suction line (7) and the system suction line (10) and dispensed via the pressure side (19) at the opened tap (20). When the pump (21) is at rest, the suction valve (11) is closed; simultaneously, because of the effects of external heat on the fluid system (3), a static over-pressure could build up as a result of the thermal expansion of the fluid, which returns the expansion volume throuyh the opening back relief valve (12) into the container (5) and then bleeds this off through the ventilation/bleed valve (8) and the ventilation channel (13) and the filter unit (48).
7~3~.133 Figure 2 shows the hydraulic workiny diagram of an expanded complete fluid system (3) with three taps (20) as dispensing points, and with a three/two-way valve (26) with the alternative hydraulic switching possibility for two containers (23), for example, with similar structural elements as shown in figure 1 (see the description for figure 1), with one exception. This applies to the ventilating valve (8) that only has one function, for ventilation, and which, in contrast to figure 1, is not coupled mechanically to its shut-off valve (6) and has a separate spring (79), and which is opened during the coupling proceduxe.
Connected hydraulically and in parallel, although with an opposing effective direction, there is an over-pressure valve (80) that responds exclusively to an internal over-pressure and opens accordingly; it can be connected through various relief paths to the atmosphere and in the present case is connected to the line of the relief valve. It is also conceivable that excess pressure in the re-useable container (24) be released directly to the atmosphere, which is to say without passing through coupling half B (9), which would also mean greater safety for the barrel or cask, e.g., during transportation.
In figure 3, the mechanical coupling is effected in the parting line (27) of the coupling half A (4), as a component of the re-useable container (24) with the container (5), the fluid, and the container suction line ~7), and the coupling half B (9), with the system suction line connector (28); it is stopped by means of a horizontal slide seat (38). The hydraulic unlocking that follows is effected by the vertical depression of the hand-operated l~ver (29) against the force of the activating spring (31), and its s~bsequent rotation in order to lock it into the recess (39). At the same time, the slide body (32) with the slide sleeve (33) is moved downwards against the force of the activating spring (31) and presses against the coupling seal (34) and simultaneously opens the suction channel (35) by moving externally across the suction drillings (36) of the container suction line (7), which 2~ 3 represents the opening of the shut-off valve (6) and opens the seal seat (37) of the ventilating valve (8) and because of the sealing action of the inside diameter of the coupling seal (34) on the outside diameter of the container suction line (7) prevents a short circuit of the hydraulic suction side with the pneumatic ventilation side of the coupling. The ventilation channel (13) leads to the combined moisture filter (14) and ventilation filter (15). The coupling seal (34), the seal seat (37) and the seal spring (49) ensure that the re-useable container (24) will prevent any fluid (25) from escaping and will prevent the ingress of dirt in general, in all states of its transportation and storage, as long as the ~luid coupling (54) is activated by the coupling of the coupling halves A (4) and B (9).
Hydraulic connection to the system suction line connector (28) is effected from the suction channel (35), through the suction seat (39) and the suction spring (40) of the suction valve (11). The back relief valve (12) together with the valve ball (42) and the relief spring (43) are integrated into the disk (41) of the suction valve (11). In order to prevent any mix-up of re-useabl~
containers (24) that are used for different fluids (25), e.g., motor oil and brake fluid, on the coupling surface (59) the diameter and the level are each kept different; for identical fluids (25), these dimensions ar~ each constant for a coupling half A (4) and B (9) for a fluid coupling (54).
In figure 4, which is an outside view of figure 3, the re-useable container (24) extends as far as the parting line (27) of the two coupling halves A (4) and B (9). Mechanical coupling is effected with the slide seat ~38). The hand-operated lever (29~ switches the coupling to hydraulic readiness for use when it is depressed and locked in the recess (30). During the delivery process of the pump, the fluid (25) is drawn from the container (5) through the container suction line ~7) and the two coupling halves A (4) and B (9)/ out of the container (5), and into the system suction line (28), and from there into the fluid system (3).
~:Q~83 In figure 5, the hand-opexated lever (29) serves exclusively to screw down the coupling half B (9) onto the coupling half A (4) by means of a screw thread (44). Because of the axial movement when it is being screwed down, the coupling is connected mechanically and at the same time locked hydraulically semi~
automatically.
In particular, figure 6 shows the two coupling halves A (4) that is integrated on the container (5), and B (9) that has an outlet to the system (64). A bayonet connector (45) serves to depress the coupling half B (9) against the force of the operating spring (31) of coupling half A (4) and its subsequent rotation to ensure mechanical coupling and simultaneously semi-automatic unlocking.
Both coupling halves A (~) and B (9) have a common parting line (27); further hydraulic function is described in relation to figure 3. In the area of the line of separation (7) of the two coupling halves A (4) and B (9) there is a ring (60) that belongs to coupling half A (4); on its outside diameter this ring incorporates at least one recess (61). At least one pin (62) is located in the extended section (65) of the housing of coupling half B (9). There is at least one pin (62) which, in the coupled state, engages in the corresponding recess (61). The pin (62) is guided over a pin (66) to the outside diameter of the housing section (65) where there is at least one activating knob (67);
the end position of the pin (62) in the locked state is ensured by way of a spring (68). In addition, the activating knob (67) serves as a grip for introducing a torsional moment during the coupling procedure; a corresponding second handle knob (69) serves the same purpose; it can, if necessary, be configured as a second activatiny knob (in contrast to the drawing shown in figure 1, the ring (60) can alternatively be located beneath the parting line (70); then the overlapping housing section (65) has to be configured so as to be appropriately deeper).
2~ .iB3 In figure 7, the radial operation of the pin (62) with its engagement in the recess (61) is effected exclusively by a radial movement (77) of the activating knob t67) against the force of the spring (68); these are integrated into coupling half B (9)0 The two recesses (61), of which only one is effective in the upper area of the sectional drawing, are a component of coupling hal~ A (4). During rotation of the bayonet connector, the pin (62) is guided along the pin guideway (63) which, in figure 8, is configured on the partial periphery.
In figure 8, the pin guideway (63) is shown in a side viewl in which the pin (62) is guided during the coupling process until it reaches its end position in the corresponding recess (61) shown in its simplest geometrically circular shape. The guideway (63) is not configured so as to be uninterrupted, but incorporates an intermediate point (76), which, in particular, of necessity provides a stable intermediate position in the event that the coupling is not effected correctly in the end position, this preventing an unintentional and complete opening of the coupling;
the intermediate position also permits a controlled depressurization of the container should a pneumatic over-pressure have built up within this; in addition, this provides a positive indication for the person who is carrying out the coupling procedure when this is being done manually, and ensures additional safety during the coupling procedure. Opposite the pivot sleeve, there is a sleeve (71) which has only an operating function, but no safety or identification function. Similarly, at the same place there is an identical recess (61) in coupling half A (4), which ensures that during each coupling process when there is only one pin (62), this ordinarily finds at least the matching recess (61) in its end position and does so in each instance.
In figure 9, the radial activation of the pin (62) with its engagement in the recess (61) is effected by way of a rotational 2~ 83 movement (72) of the pivot sleeve (73) about the point of rotation ~74). The pivoting motion (72) represents an additional manual operation, which provides additional security for the coupling procedure. ~uring the rotational movement of the coupling half B (9), the tip (75) of the pin (62) that is out of detent slides along the pin guideway (63) of coupling half A (4) until such time as it has achieved its end position and the pin (62) enters into detent in the recess (61), whereupon the pivot sleeve (73) is simultaneously guided back into its radial end position.
In figure 10, the fluid coupling (54) consisting of the coupling half A (4) and the coupling half B (9) with the container (5) is shown as a component of a mobile fluid system (3) for a dispensing point; the re-useable container (24) consists, in its turn, of the coupling half A (4) and the container (5). All the components of the fluid system (3) are integrated in or on the housing (50); in particular, wheels (51) make the system mobile;
energy is supplied through an electrical plug (52) and a cable (53). A dispensing nozzle (55) with a hose (56) serves as a dispensing element, and a quantity display (57), and a quantity selector (58) complete the external appearance of the system which, in the present drawing, is shown, for example, for self-service.
Claims (16)
1. A lockable mechanical coupling for a re-useable container and dispensing systems that are used for fluids, with two shut-off valves that are incorporated one behind the other, an air filter, a mechanical activating system, and/or a mechanical coupling, characterized in that at least one structural unit (1), on the suction side (2) of a system for fluids (3), which can be of medium to high viscosity and which can be greatly dependent on temperature, consists of - a coupling half A (4) on the container (5) with a shut-off valve (6) and a container suction line (7), as well as, connected mechanically and in parallel, and hydraulically connected before this, a ventilation valve and bleed valve (8) and, optionally, connected hydraulically and in parallel to the valve (8) a pressure relief valve (80) and - a coupling half B (9) in the system suction line (10), a suction valve (11), and, connected in parallel and hydraulically, a back relief valve (12) both connected hydraulically to a ventilation channel for the ventilation valve/bleed valve (8), which, in its side, is connected ahead of a moisture filter (14) and/or a ventilation filter (15), and a mechanical activating device (16);
as well as both coupling halves A (4) and B (9) with a mechanical coupling device (17).
as well as both coupling halves A (4) and B (9) with a mechanical coupling device (17).
2. A fluid coupling as defined in claim 1, characterized in that the back relief valve (12) is arranged with an inner port (47) on the suction valve (11).
3. A fluid coupling as defined in one or more of the claims 1 and 2, characterized in that the back relief valve (12) is arranged coaxially with the suction valve (11).
4. A fluid coupling as defined in one or more of the claims 1 to 3, characterized in that the coupling device (17) is provided with a screw thread (44), a bayonet connector (45), a slide body (32) or a slide sleeve (33).
5. A fluid coupling as defined in one or more of the claims 1 to 4, characterized in that the shut-off valve (6) and the ventilation valve (8) are arranged hydraulically and pneumatically one after the other in the coupling half A
(4), have a mechanical connection (78) and an opening spring (79), which, appropriately connected with the coupling half B (9), form a structural unit (1).
(4), have a mechanical connection (78) and an opening spring (79), which, appropriately connected with the coupling half B (9), form a structural unit (1).
6. A fluid coupling as defined in one or more of the claims 1 to 5, characterized in that the shut-off valve (6) and the ventilation valve (8), are arranged hydraulically, pneumatically, one behind the other, the ventilation valve (8) and the pressure relief valve (80), hydraulically/pneumatically parallel, are each arranged in the coupling half A (4), each having an opening spring (79) and which, appropriately connected with the coupling half (9), form a structural unit (1).
7. A fluid coupling as defined in one or more of the claims 1 to 6, characterized in that the coupling device (17) is provided with a screw thread (44), a bayonet connector (45), a slide body (32), or a slide sleeve (33).
8. A fluid coupling as defined in one or more of the claims 1 to 7, characterized in that the activating device (16) consists of a hand-operated lever (29).
9. A fluid coupling as defined in one or more of the claims 1 to 8, characterized in that the moisture filter (14) and the ventilation filter (15) are configured as a filter unit (48).
10. A fluid coupling as defined in one or more of the claims 1 to 9, characterized in that its coupling half A (4) is hydraulically coupled to the container (5) as a replaceable re-useable container (24), if desired with the coupling half B (9) as a transition to a fixed fluid system (3) (stationary fluid system).
11. A fluid coupling as defined in one or more of the claims 1 to 10, characterized in that its coupling half A (4) is hydraulically connected to the container (5) as a replaceable re-useable container (24), if desired with the coupling half B (9) as a transition within a mobile fluid system (3) that is accommodated in a housing (50) and is supported on wheels, rollers (51) or the like so as to be moveable and which has an electrical plug (52) (mobile fluid system).
12. A fluid coupling as defined in one or more of the claims 1 to 11, characterized in that the coupling surface (59) for different fluids (25) is configured such that its height and its diameter are unmistakably different but are configured constantly for coupling half A (4) and B (9) of a fluid coupling (54).
13. A fluid coupling as defined in one or more of the claims 1 to 12, characterized in that the geometrical shape of the recess (61) of the coupling half A (4) and of the pin (62) of coupling half B (9) are configured identically.
14. A fluid coupling as defined in one or more of the claims 1 to 13, characterized in that the geometrical shape of the recess (61) and of the pin (62) is a circle, a polygon, a square, a hexagon, an ellipse, or the like.
15. A fluid coupling as defined in one or more of the claims 1 to 14, characterized in that the pin (62) is connected rigidly to an activating knob (67) or a sleeve (71).
16. A fluid coupling as defined in one or more of the claims 1 to 15, characterized in that the pin (62) is connected to a pivot sleeve (73) so as to render them mutually rotatable.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4102875.9 | 1991-01-31 | ||
| DE19914102875 DE4102875A1 (en) | 1991-01-31 | 1991-01-31 | Mechanically unlockable fluid coupling - has external forced venting and is for transport, storage and removal of fluids, connecting and securing fluid system |
| DEP4202209.6 | 1992-01-28 | ||
| DE4202209A DE4202209A1 (en) | 1991-01-31 | 1992-01-28 | SECURING AND IDENTIFYING A FLUID COUPLING FOR MULTIPLE-WAY CONTAINERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2079483A1 true CA2079483A1 (en) | 1992-08-01 |
Family
ID=25900659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002079483A Abandoned CA2079483A1 (en) | 1991-01-31 | 1992-01-30 | Mechanical coupling for multiple path containers for viscous fluids |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0523211B1 (en) |
| JP (1) | JPH05507258A (en) |
| AT (1) | ATE110693T1 (en) |
| AU (1) | AU1186792A (en) |
| CA (1) | CA2079483A1 (en) |
| DE (2) | DE4202209A1 (en) |
| DK (1) | DK0523211T3 (en) |
| ES (1) | ES2059214T3 (en) |
| NO (1) | NO923779D0 (en) |
| WO (1) | WO1992013794A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9222886D0 (en) * | 1992-10-30 | 1992-12-16 | Parsons Brothers Ltd | Fluid couplings |
| EP1092674A1 (en) * | 1999-10-15 | 2001-04-18 | Richard P. Bilskie | Self-contained pneumatic beverage dispensing system |
| EP3429956B1 (en) * | 2016-03-18 | 2020-04-22 | Ecolab USA Inc. | Apparatus arranged for providing a liquid medium from a storage container |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2331480A1 (en) * | 1972-06-26 | 1974-01-17 | Pitney Bowes | LIQUID REFILL SYSTEM |
| CA1121321A (en) * | 1977-09-28 | 1982-04-06 | Leo J. Fallon | Valve assembly and coupler therefor and locking mechanism for coupler and valve assembly |
| US4180189A (en) * | 1978-01-11 | 1979-12-25 | Vending Components, Inc. | Single valve dispensing tube |
| DE2939536A1 (en) * | 1979-09-28 | 1981-04-16 | Vending Components, Inc., Hackensack, N.J. | Single valve beer dispenser tube - has annular probe moving in fitting to control flow of beer from keg and gas into keg |
| WO1988001249A1 (en) * | 1986-08-11 | 1988-02-25 | Apv Burnett & Rolfe, Inc. | Valve with safety vent seal |
| US4736926A (en) * | 1986-11-07 | 1988-04-12 | Draft Systems, Inc. | Valve assembly and coupler therefor |
| GB8702477D0 (en) * | 1987-02-04 | 1987-03-11 | Gkn Sankey Ltd | Tamperproof bush |
| US4856683A (en) * | 1987-12-31 | 1989-08-15 | Great Plains Industries, Inc. | Herbicide dispenser |
| GB8813100D0 (en) * | 1988-06-03 | 1988-07-06 | Nicholson G P | Dispensing closure for fluid container |
| DE8809942U1 (en) * | 1988-08-04 | 1988-12-01 | Eutec Josef Breitwisch & Co. GmbH, 5000 Köln | Tap head for beverage containers, especially beer kegs |
| DE4021790A1 (en) * | 1990-07-09 | 1992-01-16 | Wella Ag | Fluid dispenser for bottle filling - has dispensing head on storage container with lock engaged by bottle key |
| DE9101097U1 (en) * | 1991-01-31 | 1991-04-18 | Deutsche Tecalemit Gmbh, 4800 Bielefeld | Mechanically releasable fluid coupling for reusable containers with external forced ventilation for the transport, storage and removal of fluids as well as for the connection and protection of a fluid system |
| DE4102875A1 (en) * | 1991-01-31 | 1992-08-20 | Tecalemit Gmbh Deutsche | Mechanically unlockable fluid coupling - has external forced venting and is for transport, storage and removal of fluids, connecting and securing fluid system |
-
1992
- 1992-01-28 DE DE4202209A patent/DE4202209A1/en not_active Ceased
- 1992-01-30 JP JP92503254A patent/JPH05507258A/en active Pending
- 1992-01-30 AT AT92903406T patent/ATE110693T1/en active
- 1992-01-30 CA CA002079483A patent/CA2079483A1/en not_active Abandoned
- 1992-01-30 WO PCT/EP1992/000204 patent/WO1992013794A1/en active IP Right Grant
- 1992-01-30 DK DK92903406.4T patent/DK0523211T3/en active
- 1992-01-30 ES ES92903406T patent/ES2059214T3/en not_active Expired - Lifetime
- 1992-01-30 AU AU11867/92A patent/AU1186792A/en not_active Abandoned
- 1992-01-30 EP EP92903406A patent/EP0523211B1/en not_active Expired - Lifetime
- 1992-01-30 DE DE59200439T patent/DE59200439D1/en not_active Expired - Fee Related
- 1992-09-29 NO NO923779A patent/NO923779D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE110693T1 (en) | 1994-09-15 |
| EP0523211A1 (en) | 1993-01-20 |
| DK0523211T3 (en) | 1994-10-03 |
| AU1186792A (en) | 1992-09-07 |
| JPH05507258A (en) | 1993-10-21 |
| NO923779L (en) | 1992-09-29 |
| WO1992013794A1 (en) | 1992-08-20 |
| DE59200439D1 (en) | 1994-10-06 |
| EP0523211B1 (en) | 1994-08-31 |
| NO923779D0 (en) | 1992-09-29 |
| DE4202209A1 (en) | 1993-07-29 |
| ES2059214T3 (en) | 1994-11-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |