EP4105166A1 - Buse de distribution - Google Patents

Buse de distribution Download PDF

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Publication number
EP4105166A1
EP4105166A1 EP21179285.8A EP21179285A EP4105166A1 EP 4105166 A1 EP4105166 A1 EP 4105166A1 EP 21179285 A EP21179285 A EP 21179285A EP 4105166 A1 EP4105166 A1 EP 4105166A1
Authority
EP
European Patent Office
Prior art keywords
membrane
valve
dispensing
fluid
main valve
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.)
Withdrawn
Application number
EP21179285.8A
Other languages
German (de)
English (en)
Inventor
Matthias Fedde
Lasse Schulz-Hildebrandt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elaflex Hiby GmbH and Co KG
Original Assignee
Elaflex Hiby GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Elaflex Hiby GmbH and Co KG filed Critical Elaflex Hiby GmbH and Co KG
Priority to EP21179285.8A priority Critical patent/EP4105166A1/fr
Priority to ARP220101550A priority patent/AR126131A1/es
Priority to CA3221968A priority patent/CA3221968A1/fr
Priority to EP22732558.6A priority patent/EP4355685A1/fr
Priority to CN202280042403.5A priority patent/CN117545710A/zh
Priority to AU2022295035A priority patent/AU2022295035A1/en
Priority to PCT/EP2022/065952 priority patent/WO2022263341A1/fr
Publication of EP4105166A1 publication Critical patent/EP4105166A1/fr
Withdrawn legal-status Critical Current

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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
    • B67D7/06—Details or accessories
    • B67D7/42—Filling nozzles
    • B67D7/44—Filling nozzles automatically closing
    • B67D7/46—Filling nozzles automatically closing when liquid in container to be filled reaches a predetermined level
    • B67D7/48—Filling nozzles automatically closing when liquid in container to be filled reaches a predetermined level by making use of air suction through an opening closed by the rising liquid

Definitions

  • the subject matter of the invention is a dispensing valve with an inlet for connecting a fluid supply line and an outlet for dispensing a fluid.
  • the inlet is connected to the outlet via a fluid channel, with a main valve being arranged in the fluid channel and being biased into a closed position against a valve seat.
  • the dispensing valve also includes a hand lever for actuating the main valve and a clutch device which is operatively connected to the hand lever and which, in the coupled state, is set up to convert a movement of the hand lever into an actuation of the main valve. In the uncoupled state, the main valve is forced into the closed position, regardless of the position of the hand lever.
  • the dispensing valve also has a membrane which separates a first membrane space from a second membrane space and which can be moved by a pressure difference existing between the first membrane space and the second membrane space to actuate the clutch device, wherein the first membrane space can be acted upon by a vacuum and wherein a Sensor line opens into the first membrane space.
  • Nozzles of this type are, for example, from the document EP 2 386 520 B1 famous.
  • the sensor line can be routed to a downstream end of an outlet pipe, so that the sensor line is covered and closed by the liquid in the tank at the end of a refueling process. Due to the loading of the first membrane space with a vacuum, the pressure in the first membrane space is reduced by the closing of the sensor line, which leads to a movement of the membrane in the direction of the first membrane space. This movement can be used to actuate the clutch device. By actuating the coupling device, it can into the decoupled state in which the main valve is moved to the closed position regardless of the position of the hand lever. In this way, after the tank has been completely filled, further fluid delivery and thus overflowing of the tank is prevented.
  • the second membrane space is sealed off from the fluid channel and fluidly connected via a ventilation channel to an environment outside the dispensing valve, with a part of the coupling device located outside the second membrane space being flushed with fluid when the main valve is open.
  • the coupling device is set up to convert a movement of the hand lever into an actuation of the main valve in the coupled state. It is not necessary for the coupling device to establish a direct connection between the hand lever and the main valve. Rather, it may be sufficient, for example, that the coupling device for the hand lever with a device Prestressing of the main valve in the closed position couples, so that this prestressing can be compensated or canceled with the help of the hand lever.
  • the main valve can then be moved to the open position by upstream fluid pressure, such as that shown in FIG EP 2 386 520 B1 is known.
  • the coupling device can also be set up to couple the hand lever to a fixed point, which serves as a counter bearing when the hand lever is actuated and enables power transmission to the main valve in the first place, as can be seen, for example, from FIG U.S. 2018/037452 A1 is known.
  • Other clutch devices that are basically known to those skilled in the art and can be actuated by a pressure-sensitive membrane are also included in the concept of the invention.
  • the second membrane space is sealed off from the fluid channel and is connected to the surrounding fluid via a ventilation channel, the pressure within the second membrane space can be kept constant at the level of the ambient pressure regardless of the volume flow.
  • the covering of the sensor line leads to a defined pressure difference.
  • the pressure difference between the first and second diaphragm space can thus be controlled much better, so that the clutch device can be actuated in a defined and safe manner.
  • the fluid can flush and lubricate the clutch device despite the sealing of the second diaphragm chamber, so that the clutch device can be kept running smoothly for long periods of time without additional maintenance effort can be. Regular cleaning or the introduction of additional lubricants is not required.
  • the coupling device has a latching element for coupling the hand lever to a valve actuating element.
  • the latching element can preferably be moved into or out of a coupling position by a movement of the membrane.
  • the valve actuating element can, for example, have a first valve stem connected to the hand lever, which can be coupled to a second valve stem by means of the latching element, the second valve stem being prestressed in a closing direction by a restoring element and designed to urge the main valve into the closed position.
  • the force exerted by the restoring element can be compensated for by means of the hand lever, so that the main valve is no longer forced into the closed position and by one Fluid pressure can be moved to the open position.
  • the first valve stem can be designed as an inner valve stem and the second valve stem can be designed as an outer valve stem, which concentrically surrounds the inner one.
  • the locking element can have locking rollers or locking balls, for example.
  • the latching element which couples the hand lever to the valve actuating element, when moving into the latched position or out of the latched position, can strike corners or edges of the elements to be coupled and become wedged in the process.
  • the latching element is therefore positioned in such a way that the fluid flows around it when the main valve is open. As a result of the continuous lubrication of the locking element made possible in this way when the main valve is open, it can slide more easily into or out of the locking position, so that the coupling process becomes significantly more reliable.
  • the second membrane chamber is sealed off from the fluid channel by means of a cover, with the coupling device preferably having a connecting element connected to the membrane, which is guided in a sliding manner through a through-opening in the cover.
  • the connecting element preferably has a section which is located outside of the second diaphragm chamber and is connected to the latching element. Because the connecting element is slidably guided through the cover, the connecting element can move relative to the cover when the membrane moves, and in this way transfer the movement of the membrane to the latching element. Because the second membrane space is sealed off from the fluid channel, the pressure within the second membrane space is not influenced by the pressure conditions in the fluid channel.
  • At least one sealing element can be arranged between the connecting element and the cover, which is preferably designed as an O-ring, X-ring, membrane seal or lip seal.
  • the connecting element can have an outwardly pointing circumferential groove into which the sealing element is let. It is also possible for the through-opening of the cover to have an inward-pointing circumferential groove into which the sealing element is embedded. In this way, the entire peripheral surface of the connecting element can be sealed off from the cover. By inserting the sealing element into a groove, it is also reliably protected against displacement along the axial direction of the connecting element.
  • the use of one or more ventilation ducts, which connect the second membrane space with the environment, is fundamentally associated with the risk that dirt, such as dust particles or liquids, can penetrate into the second membrane space.
  • the at least one ventilation channel therefore opens into an opening of the nozzle pointing towards the environment, the opening being covered by a flexible protective cover in such a way that pressure equalization is possible.
  • the ventilation channel is preferably led to the opening in the manner of a labyrinth. In this way, penetrating dirt particles cannot at least not penetrate directly into the second membrane space, but rather have to change their direction of movement several times in order to approach the membrane space along the labyrinthine channel. This means that dirt can be significantly reduced or even completely prevented.
  • the membrane and the coupling device connected to it are part of a safety shutdown module that is integrated into a housing of the nozzle can be used.
  • the modular design makes it possible to replace the entire safety shutdown module in the event of a malfunction.
  • the use of safety shutdown modules is basically known from the prior art.
  • the safety shutdown module can therefore be configured in principle to be compatible with previously known nozzles, so that the features according to the invention can be retrofitted to a nozzle of the prior art by replacing the safety shutdown module.
  • the dispensing valve can also have a shut-off device which moves the main valve into the closed position independently of a position of the hand lever when a liquid pressure at the inlet falls below a minimum value.
  • the switch-off device is therefore triggered when the pressure falls below the minimum, such triggering preferably being accompanied by a movement of the membrane.
  • Such an additional switch-off device is basically state-of-the-art (see e.g EP 2 386 520 ) famous.
  • the shutdown device can be integrated into the safety shutdown module.
  • triggering of the shut-off device leads to the diaphragm moving in the direction of the first diaphragm chamber and thereby releasing the coupling between the main valve and the hand lever (for example by locking rollers being lifted out of a locking position), so that the main valve is pushed into the closed position will.
  • the second membrane space is sealed off from the fluid channel according to the invention, a subsequent resetting of the shut-off device, in which the membrane is moved back into the starting position (ie in the direction of the second membrane space), can take place much faster and more reliably.
  • fluid had to be displaced from the second membrane space through often narrow channels, which was particularly the case in viscous fluids (e.g. when dispensing diesel at low temperatures) could cause problems.
  • fluid displacement is no longer required when resetting, so that the disconnection device can be reliably reset after it has been triggered.
  • the subject matter of the invention is also a petrol pump with a dispensing hose and a dispensing valve according to the invention, the dispensing hose being connected to the inlet of the dispensing valve.
  • the petrol pump can be further developed by further features described within the scope of the invention.
  • FIG 1 shows a dispensing valve according to the invention with an inlet 13 to which a dispensing hose for supplying a liquid fuel can be connected.
  • the dispensing valve has a housing 12 into which an outlet pipe 11 is inserted. There is an outlet 14 at the end of the outlet pipe 11 .
  • the inlet 13 is connected to the outlet 14 via a fluid channel 15 .
  • a main valve 16 In the fluid channel 15 there is a main valve 16, which is biased in a closing direction against a valve seat.
  • the main valve 16 can be actuated by the hand lever 17.
  • the hand lever 17 is coupled in a manner known in principle to an inner valve stem 30 by means of an actuating pin 21, which in turn can be coupled to an outer valve stem by means of a coupling device.
  • the coupling takes place by means of a safety shutdown module 23 which is inserted into the housing 12. The functioning of the safety shutdown module 23 is described below with reference to FIG Figures 2 to 5 explained in more detail.
  • FIG 2 shows an enlarged section of the figure 1 .
  • the safety shutdown module 23 is shown in an enlarged view.
  • the dispensing valve has a closing spring 34 which urges the outer shaft 31 in the closing direction (upstream).
  • the upstream end of the outer shaft 31 lies in the in figure 2 shown state at the downstream end of the main valve 16, so that the main valve 16 is pressed against the valve seat 35 and thus held in the closed position.
  • the inner valve stem 30 is coupled to the outer valve stem 31 by means of a coupling device 22 .
  • the coupling device 22 comprises a locking roller holder 33 in which the locking rollers 32 are mounted.
  • There are locking openings 37 in both the outer valve stem 31 and the inner valve stem 30, which are in figure 2 state shown are aligned with each other, wherein the locking rollers 32 are inserted into the locking openings 37.
  • An axial movement of the inner valve stem 30 is transmitted to the outer valve stem 31 by means of the locking rollers 32 .
  • the actuating pin 21 is moved downstream and the inner valve stem 30 is carried along by the actuating pin 21 .
  • the outer valve stem 31 Due to the coupling mediated by the locking rollers 32 as described above, the outer valve stem 31 is carried along by the inner valve stem 30 and in this way is lifted off the main valve 16 counter to the closing force of the closing spring 34 . The main valve 16 can then be moved to the open position by an upstream fluid pressure.
  • the clutch device 22 is actuated with the aid of a membrane 26 which separates a first membrane space 27 from a second membrane space 28 .
  • the coupling device 22 also includes a connecting element 36 that connects the membrane 26 to the locking roller holder 33 in which the locking rollers 32 are mounted. A movement of the membrane 26 can be transmitted to the locking rollers 32 in this way. In particular, the locking rollers 32 can be lifted out of the locking openings 37 by moving the membrane 26 upwards in order to decouple the inner valve stem 30 from the outer valve stem 31 .
  • the dispensing valve also has a vacuum line 38 which connects a venturi nozzle (not shown in the figures) positioned downstream of the main valve 16 to the diaphragm space 27 in order to apply a vacuum to the first diaphragm space.
  • the sensor line 19 opens into the first diaphragm chamber 27 in the area 19'. During the dispensing of the fuel, air and/or fuel vapors are sucked in from the environment via the vacuum line 38, the first diaphragm chamber 27 and the sensor line 19 at the downstream end of the sensor line 19. If the end of the sensor line 19 is covered by the fuel level at the end of a refueling process, a negative pressure is created in the first diaphragm chamber 27 .
  • the second membrane chamber 28 is separated from the fluid channel 15 in a fluid-tight manner by a cover 40 .
  • the fuel flowing through the fluid channel thus has no influence on the pressure inside the second membrane space 28.
  • the second membrane space 28 is also connected via a ventilation channel 29 to the environment outside the dispensing valve.
  • the junction 42 of the ventilation channel 29 can be seen.
  • the labyrinthine course of the ventilation channel 29 is in the figure 5 shown which the in the figure 3 represents elements shown along a different cutting plane.
  • FIG 5 is a sectional view along the in figure 5 drawn-in lines AA
  • a reversal of direction takes place several times along the ventilation duct 29, through which the ingress of dirt is prevented.
  • the course of the ventilation channel 29 is in the Figures 5 and 5a partially illustrated by double arrows.
  • the ventilation duct starting from the membrane chamber 28, initially runs radially outwards (relative to the axis of the connecting element 36) and then branches off upwards, inwards, upwards, inwards and finally downwards.
  • the ventilation channel then (relative to the axis of the connecting element 36) in the circumferential direction (in the view of Figure 5a up and down) branches off and thus opens into a free space 43, which can in principle be open to the environment.
  • a free space 43 in this case by an in figure 2 shown protective coating 44 covered in such a way that a pressure equalization between the free space 43 and the environment is possible.
  • the protective cover 44 prevents dirt from entering the free space 43 (or the ventilation channel 29).
  • the connecting element 36 has a cylindrical section which is passed through a corresponding through-opening in the cover 40 .
  • a lip seal 41 is inserted in the area of the through-opening.
  • the lip seal 41 seals against the outer surface of the cylindrical section, so that the pressure within the membrane space 28 is not affected by the pressure conditions in the fluid channel.
  • the lip seal 41 allows a sliding movement of the connecting element 36 relative to the cover 40.
  • the area below the cover 40 is connected to the fluid channel 15 .
  • the detent roller holder 33 and the detent rollers 32 are therefore washed around by the fuel while it is being dispensed. This results in continuous lubrication of the locking rollers 32 and the accumulation of dirt is avoided.
  • the embodiment of Figures 1 to 5 also includes a shutdown device integrated into the safety shutdown module 23, which is designed to move the main valve 16 into the closed position independently of a position of the hand lever 17 when a liquid pressure at the inlet 13 falls below a minimum value.
  • the switch-off device is designed in a manner that is known in principle and should therefore not be described in detail here.
  • there is sufficient pressure at the inlet 13 of the dispensing valve so that the shut-off device is activated and the main valve can be opened with the aid of the hand lever.
  • the condition shown is that the pressure at the inlet is lower than the minimum pressure. Accordingly, the coupling device is in the uncoupled state and the main valve cannot be actuated.
  • the figure 6 12 shows the safety shutdown module 23 of an alternative embodiment of a nozzle according to the invention. This embodiment differs from the embodiment of FIG Figures 1-5 only due to the absence of the defeat device described above.
  • FIG. 7 to 12 14 each show partial views of alternative embodiments, each illustrating an enlarged cross-sectional view of the contact area between the connecting element 36 and the cover 40.
  • FIG. 7-9 the cover 40 in the area of the through-opening has an inward-pointing groove into which different types of sealing elements 41 are inserted, namely an O-ring ( figure 9 ), an X ring ( figure 8 ) and a lip seal ( figure 7 ).
  • the connecting element 36 is cylindrical in the area under consideration, the respective sealing element 41 being in annular contact with the cylindrical area.
  • a groove open to the outside is let into the cylindrical area of the connecting element 36 .
  • this groove is in the embodiment of figure 10 an O-ring and in the embodiment of figure 11 fitted with a lip seal.
  • the through-opening of the cover 40 has a cylindrical inner surface which bears against the respective sealing element over its entire circumference.
  • an outwardly open groove is embedded in the cylindrical area of the connecting element 36 and an inwardly open groove in the cylindrical area of the cover 40 .
  • a membrane-like sealing element (membrane seal) 41 is inserted into these two grooves, which ensures sealing by means of a flexing membrane without surfaces rubbing against one another.
  • a good seal can be achieved by the types of seal mentioned, without the ability to slide between the cover 40 and the connecting element 36 being impaired too much.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Mechanically-Actuated Valves (AREA)
EP21179285.8A 2021-06-14 2021-06-14 Buse de distribution Withdrawn EP4105166A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP21179285.8A EP4105166A1 (fr) 2021-06-14 2021-06-14 Buse de distribution
ARP220101550A AR126131A1 (es) 2021-06-14 2022-06-10 Válvula de surtidor
CA3221968A CA3221968A1 (fr) 2021-06-14 2022-06-13 Pistolet de distribution
EP22732558.6A EP4355685A1 (fr) 2021-06-14 2022-06-13 Pistolet de distribution
CN202280042403.5A CN117545710A (zh) 2021-06-14 2022-06-13 填充喷嘴
AU2022295035A AU2022295035A1 (en) 2021-06-14 2022-06-13 Filling nozzle
PCT/EP2022/065952 WO2022263341A1 (fr) 2021-06-14 2022-06-13 Pistolet de distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21179285.8A EP4105166A1 (fr) 2021-06-14 2021-06-14 Buse de distribution

Publications (1)

Publication Number Publication Date
EP4105166A1 true EP4105166A1 (fr) 2022-12-21

Family

ID=76444343

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21179285.8A Withdrawn EP4105166A1 (fr) 2021-06-14 2021-06-14 Buse de distribution
EP22732558.6A Pending EP4355685A1 (fr) 2021-06-14 2022-06-13 Pistolet de distribution

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP22732558.6A Pending EP4355685A1 (fr) 2021-06-14 2022-06-13 Pistolet de distribution

Country Status (6)

Country Link
EP (2) EP4105166A1 (fr)
CN (1) CN117545710A (fr)
AR (1) AR126131A1 (fr)
AU (1) AU2022295035A1 (fr)
CA (1) CA3221968A1 (fr)
WO (1) WO2022263341A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2386520A1 (fr) 2010-05-14 2011-11-16 Elaflex Hiby Tanktechnik GmbH & Co. Buse de distribution
US20180037452A1 (en) 2016-08-02 2018-02-08 Opw Fueling Components Inc. Dispensing Nozzle with Drip Reduction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2386520A1 (fr) 2010-05-14 2011-11-16 Elaflex Hiby Tanktechnik GmbH & Co. Buse de distribution
EP2386520B1 (fr) 2010-05-14 2013-04-03 Elaflex Hiby Tanktechnik GmbH & Co. Buse de distribution
US20180037452A1 (en) 2016-08-02 2018-02-08 Opw Fueling Components Inc. Dispensing Nozzle with Drip Reduction

Also Published As

Publication number Publication date
WO2022263341A1 (fr) 2022-12-22
EP4355685A1 (fr) 2024-04-24
AU2022295035A1 (en) 2024-01-18
CN117545710A (zh) 2024-02-09
AR126131A1 (es) 2023-09-13
CA3221968A1 (fr) 2022-12-22

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