DISPOSAL VALVE FOR LIQUID CONTAINER

Abstract

The invention relates to a dispensing valve element (10) for a liquid container, particularly intended to be connected to the outlet pipe or outlet of a transport and storage container for liquids, comprising a valve element body (11) in which a valve body is disposed, which can be pivoted on a valve axis by means of a handle (12) to open and close a flow cross-section of an outlet tube (13). The handle is provided with a handle stop and a dome of the valve element body is provided with a body stop, which can be locked in their relative position by means of a safety device (16) to prevent the closed position. The safety device (16) has a stop lock (17) which can be moved between a locked position and an unlocked position by a translational movement in the direction of the valve axis.

Description

[0001] The present invention relates to a dispensing fitting for liquid containers, in particular for connection to the outlet nozzle or the outlet opening of a transport and storage container for liquids, comprising a fitting housing in which a valve body pivotable about a valve axis by means of a handle is arranged for opening and closing a flow cross-section of an outlet pipe, wherein a housing dome is formed on the outlet pipe for supporting a valve shaft provided with the handle at its shaft end extending out of the outlet pipe, wherein the handle is arranged with a hub part on the shaft end for a rotationally fixed connection with the valve shaft, wherein the hub part is provided with a handle stop and the housing dome with a housing stop to define a shut-off position of the valve body, which can be locked in their relative arrangement by means of a locking device to secure the shut-off position.

[0002] From EP 1 106 565 A1, a withdrawal fitting designed as a flap valve with a valve flap as the valve body is known, which has a seal to form a safety device for securing the relative arrangement between a handle stop formed on the handle and a housing stop formed on the valve housing, which also serves as an authenticity safeguard.

[0003] EP 1 547 967 A1 proposes that a safety device be provided to secure the handle against unintentional or malicious adjustment of the handle, which may be designed as a seal or mechanical lock, in particular a breakable locking ring.

[0004] The known safety devices, which are intended to secure the handle of the butterfly valve in a relative arrangement on the valve housing corresponding to the shut-off position of the butterfly valve, are each only suitable for single use and must be replaced with a new safety device after a first opening operation of the butterfly valve, which requires removal or destruction of the safety device, in order to ensure a closed position for the subsequent use of the liquid container, i.e., for example, the further transport of an at least partially filled liquid container.

[0005] This necessitates, in particular, that the user of the liquid container must have a suitable replacement device readily available and that the safety device on the valve must be reinstalled. Due to the additional effort involved, there is a risk that, in order to avoid this extra work, partially filled liquid containers will be transported without the necessary locking of the dispensing valve in its closed position.

[0006] The present invention is therefore based on the objective of proposing a withdrawal fitting which has an improved safety device.

[0007] To solve this problem, the extraction fitting according to the invention has the features of claim 1.

[0008] According to the invention, the locking device has a stop bolt which is held on a guide device arranged on the hub part and can be moved translationally in the direction of the valve axis between a locking position and an unlocking position by means of the guide device, wherein the stop bolt in the locking position is arranged in an engagement network with a first bolt stop and a second bolt stop to secure the shut-off position.

[0009] Due to the inventive design of the locking device, in which the stop bolt is held on a guide device in both the locking position and the unlocking position, the stop bolt remains on the extraction fitting even in the unlocking position, so that the stop bolt can be reused after an unlocking process to adjust the valve body to its open position, in order to be moved back into its locking position after the valve body has been moved to the shut-off position.

[0010] In the extraction valve according to the invention, neither a replacement of the safety device after the extraction valve has been actuated, nor a reassembly of the safety device or parts thereof after the extraction valve has been actuated is necessary.

[0011] In a preferred embodiment, the guide device is designed as a guide web which is formed as an integral part of a circumferential wall of the hub part, wherein a through-opening is formed in the bottom wall to execute the movement of the stop bolt in the transition from the guide web to a bottom wall of the hub part.

[0012] This allows, on the one hand, the safety device on the extraction valve to be designed in a way that is protected against external forces. On the other hand, the protruding position of the stop bolt from the bottom wall of the hub part in the unlocked position can serve as a visual indicator for the unlocked position of the safety device.

[0013] Preferably, the stop bolt has a bolt leg for locking with the bolt stops and an actuating leg for handling the stop bolt, wherein the bolt leg and the actuating leg are arranged substantially parallel to each other and are connected to each other at adjacent ends via a stop base, the stop base bearing against an opening edge of the through-hole formed by the upper end of the guide web in the locking position. The actuating leg, which is independent of the bolt leg performing the actual locking function, allows for easy handling and access to the stop bolt, regardless of whether it is in its locking or unlocking position.

[0014] If the stop base has a surface that is flush with a visible surface of the bottom wall of the hub part when the stop bolt is in the locked position, a transition surface between the visible surface of the bottom wall of the hub part and the surface of the stop base can serve for the application of a tamper-evident seal, for example, a strip of paper or foil, which is destroyed when the stop bolt is moved into its unlocked position.

[0015] Preferably, the bolt leg has a bolt stop that interacts with the hub part and limits the movement of the stop bolt into the unlocked position to form a retaining device.

[0016] In a preferred embodiment, the actuating leg of the stop bolt has a fastening device for attaching a tamper-evident seal.

[0017] Preferably, the fastening device is designed as a through-opening, which may in particular be formed in a radially projecting handling rib of the actuating leg.

[0018] In a preferred embodiment, the first bolt stop is formed by the housing stop of the housing dome and the second bolt stop is formed by the handle stop, wherein the housing stop is received between the handle stop and the bolt stop.

[0019] If the housing stop is formed by a stop tab arranged on the outside of the housing dome, the housing stop can be made particularly robust.

[0020] In a further embodiment, the first bolt stop is formed by a first housing stop formed on the housing dome, and the second bolt stop is formed by a second housing stop formed on the housing dome, and the bolt stop is received between the housing stops. This embodiment allows both bolt stops to be implemented on the housing dome.

[0021] If the first locking stop is formed by a first axial end of a circumferential rim on the upper edge of the housing dome and the second locking stop is formed by a second axial end of the rim arranged opposite the first axial end, a particularly compact design of the locking device becomes possible.

[0022] Preferred embodiments of the extraction fitting are explained in more detail below with reference to the drawings.

[0023] They show: Fig. 1a dispensing valve in a first embodiment in shut-off position and with a safety device in locking position; Fig. 2 the in Fig. 1 The illustrated extraction valve is in the shut-off position with the safety device in the unlocking position; Fig. 3 a stop bolt of the locking device in isometric representation; Fig. 4 the in Fig. 3 shown stop bolt in side view; Fig. 5 the in Fig. 3 shown stop bolt in another isometric view; Fig. 6 a partial section view of the in Fig. 1 depicted extraction fitting along section line VI-VI in Fig. 1 ; Fig. 7 a partial section view of the in Fig. 2 depicted extraction fitting along section line VII-VII; Fig. 8 a dispensing valve in a further embodiment in the open position and with a locking device in the unlocked position; Fig. 9a fitting housing that is in Fig. 8 illustrated extraction fitting; Fig. 10 the in Fig. 8 The illustrated extraction valve is in the shut-off position with the safety device in the unlocking position; Fig. 11 the in Fig. 10 The illustrated extraction valve is in the shut-off position with the safety device in the locking position; Fig. 12 a sectional view of the in Fig. 11 illustrated extraction fitting according to section line XII-XI in Fig. 11 .

[0024] Fig. 1 Figure 1 shows a dispensing fitting 10 with a fitting housing 11 and a handle 12 arranged on the fitting housing 11, which serves to actuate a valve body arranged in a discharge pipe 13, not shown in detail here, which opens and closes a flow cross-section ( Fig. 6, 7 ) of the outlet pipe 13 can be moved into an open position and a shut-off position by means of the handle 12.

[0025] In the representations according to Figs. 1 and 2 The outlet pipe 13 of the extraction fitting 10 is provided with a sealing cap 15 at its outlet 14. The [missing information] corresponds to the [missing information]. Fig. 1 The configuration of the extraction fitting 10 shown represents the state of the extraction fitting 10 during the transport of a liquid container equipped with the extraction fitting 10.

[0026] To secure the shut-off position of the valve body, a locking device 16 is provided on the extraction fitting, which is attached to a guide rib 33 on the handle 12 ( Fig. 6, 7 ) trained guide device held stop bolt 17 comprises.

[0027] As the Figs. 1 and 2 As shown, the stop bolt 17 is arranged on a hub part 18 of the handle 12, the hub part 18 being, as shown in the Figs. 6 and 7The valve shaft 20 is depicted as having a cap-like form and is mounted on an upper shaft end 21 of the valve shaft 20 with a hub sleeve 19 for transmitting a torque from the handle 12 to a valve shaft 20, at the lower end of which the valve body (not shown in detail) is located. The valve shaft 20 is supported by a bearing collar 22 in a housing dome 23 formed on the valve housing 11 and is sealed against a flow cross-section ( Fig. 6 ) of the outlet pipe 13 sealed.

[0028] How especially Fig. 2 As shown, the hub part 18 of the handle 12 of the dispensing fitting 10 has two handle stops 25, 26 formed in a circumferential wall 32 of the hub part 18, which limit rotation of the handle 12 about a pivot axis 37 defined by the valve shaft 20. Figs. 1 and 2 ,in which the extraction valve 10 is shown in the shut-off position, the one in the Figs. 1 and 2 The left-hand handle stop 25 is in a stop position against a housing stop 27 formed on a stop tab 81 on the valve housing 11. The stop is formed in the Figs. 1 and 2 The right-hand handle stop 26, which defines an opening position of the valve body in a stop position against a housing stop 38 also formed on the stop tab 81, is spaced apart from the handle stop 25 by a recess 28 in the circumferential wall 32 of the hub part 18, so that a movement s is enabled within the recess 28.

[0029] As in the Figs. 3 to 5As shown, the stop bolt 17 has a bolt leg 29 and an actuating leg 30 extending substantially parallel to the bolt leg 29 for handling the stop bolt 17 and a stop base 31 connecting the bolt leg 29 with the actuating leg 30.

[0030] To connect the stop bolt 17 to the hub part 18 of the handle 12, as shown in the Figs. 6 and 7 shown, the guide web 33 is integrally formed in the circumferential wall 32 of the hub part 18, onto which the stop bolt 17 passes through a through-opening 35 formed in a bottom wall 34 of the hub part 18 adjacent to the guide web 33 ( Fig. 2 ) can be postponed.

[0031] The Fig. 2 and 7The figures show the stop bolt 17 in its unlocked position, in which the stop bolt 17 with the bolt leg 29 is inserted into the bottom wall 34 of the hub part 18 to such an extent that there is no overlap between the bolt leg 29 and the housing stop 27, i.e., pivoting of the handle 12 about the pivot axis 37 is possible, so that when the handle 12 is pivoted by the travel distance s, the right handle stop 26 comes into a stop position against the housing stop 27 to move the valve body into an open position.

[0032] As in particular the Fig. 1As can be seen, the stop bolt 17 is provided on its actuating leg 30 with a handling bar 45 which has a through-opening 46 which, together with a further through-opening 50 provided on a circumferential edge of the closure cap 15, offers the possibility of arranging a tamper-evident seal, for example in the form of a sealing wire, on the dispensing fitting 10, such that a transfer of the stop bolt 17 into its in Fig. 2 The unlocking position shown is only possible after the sealing wire has been destroyed.

[0033] To transfer the stop bolt 17 from the to the Fig. 2 and 7 shown unlocking position in the Fig. 1 and 6In the depicted locking position, the stop bolt 17 is pushed further into the through-opening 35 parallel to the pivot axis 37 until the stop base 31 abuts an opening edge 39 of the through-opening 35 formed by the upper end of the guide web 33. In the locking position, a contact is formed between the housing stop 27 and the bolt leg 29, particularly in the Fig. 6 depicted covering, such that in the Fig. 1 In the depicted locking position, the housing stop 27 formed by the stop tab 81 is received between the handle stop 25 and the bolt leg 29 of the stop bolt 17, and the stop bolt 17 together with the handle stop 25 and the housing stop 27 forms the locking device 16, and pivoting the handle 12 about the pivot axis 37 into the open position is no longer possible.

[0034] How in particular the Fig. 6As shown, in the locking position a surface 41 of the stop base 31 is flush with a visible surface 42 of the hub part 18 of the handle 12, so that in the transition from the surface 41 to the visible surface 42 a flat sealing surface 43 is formed which can be used for attaching a sealing foil or a sealing strip.

[0035] A summary of Figs. 6 and 7 makes it clear that a transfer of the stop bolt 17 from the in Fig. 6 shown locking position in the Fig. 7The defined unlocking position shown can be achieved without the stop bolt 17 disengaging from the guide element formed by the guide web 33. To define the unlocking position and to ensure the captive arrangement of the stop bolt 17 on the hub part 18 of the handle 17, a locking stop 47 is formed on the bolt leg 29 to create a retention device. In the unlocked position, this locking stop abuts against an underside 49 of the hub part 18.

[0036] In Fig. 8 In a further embodiment, a withdrawal fitting 51 is shown, which, corresponding to the withdrawal fitting 10, comprises a fitting housing 80 with a handle 52, which is arranged on a housing dome 53.

[0037] In contrast to the arrangement of the handle 12 on the housing dome 23 of the dispensing fitting 10, such that, as in particular in Fig. 7As shown, the hub sleeve 19 of the handle 12 is directly connected to the bearing collar 22 of the valve shaft 20. The handle 52 is attached to the housing dome 53 such that diametrically opposed and radially inwardly projecting locking lugs 57 are arranged on a lower edge 54 of a circumferential wall 55 of a hub part 56 of the handle 52. During an axial joining process for mounting the handle 52 in the direction of the pivot axis 37, these lugs form a particularly significant force. Fig. 9 the depicted, formed rim 60 on the upper edge 59 of the housing dome 53 engage behind it, wherein a in Fig. 8 The valve shaft (not shown) is integrally connected to a base wall 58 of the handle 52. Therefore, in the dispensing fitting 51, the handle 52 and the valve shaft form a single-piece assembly.

[0038] How especially Fig. 9As shown, the housing dome 53 has two diametrically opposed housing stops 61, 62 projecting above the upper edge 59, as well as axial ends 67, 72 of the rim 60 formed opposite each other by means of a rim web recess 66, which form locking stops.

[0039] How Fig. 10 As shown, the handle 52 has two diametrically opposed handle stops 69, 70 on an inner side 68 of the hub part 56, which, when the handle 52 is pivoted about the pivot axis 37, allow two stop positions in which the handle stops 69, 70 each engage one of the Fig. 9 the illustrated housing stops 61, 62 are in contact.

[0040] How Fig. 10 As shown, the shut-off position of the dispensing valve 51 is defined by the contact of the handle stop 69 against the housing stop 61 and the contact of the handle stop 70 against the housing stop 62. In the Fig. 10In the illustrated shut-off position of the extraction valve 51, there is a stop bolt 71 arranged on the handle 52, which corresponds to the stop bolt 17 of the locking device 38 on a guide web 33 ( Fig. 7 ) is held in the circumferential wall 55 of the handle 52, in its unlocked position, in which a stop base 73 of the stop bolt 71, which has a particularly in Fig. 12 The illustrated locking leg 74 connects with an actuating leg 75, and is arranged above the bottom wall 58 of the hub part 56 of the handle 52.

[0041] From the in Fig. 10 In the unlocked position shown, the stop bolt 71 can be moved into its position to secure the shut-off position of the extraction valve 51. Fig. 11 and 12The locking position shown is moved, whereby the locking leg 74 is moved downwards in a space 76 formed between the housing dome 53 and the circumferential wall 55 of the hub part 56 of the handle 52.

[0042] In this locking position, as shown from Fig. 12 It can be seen that the bolt leg 74 of the stop bolt 71 together with the axial ends 67, 72 of the edge web 60 forming the bolt stops form a locking device 77 which effectively blocks a rotation of the handle 52 in both directions of rotation about the pivot axis 37.

[0043] How a comparison of Fig. 1 and 11As shown, the design of the bolt stops cooperating with the bolt leg 74 as axial ends 67, 72 of the edge bead 60 enables a comparatively short design of the bolt leg 74, so that in the case of the stop bolt 71 the bolt leg 74 and the actuating leg 75 are essentially the same length and do not project downwards beyond the hub part 56 or the lower edge 54 of the circumferential wall 55 of the hub part 56.

[0044] How Fig. 11As shown, the housing dome 53 of the dispensing valve 51 and the hub part 56 of the handle 52 are each provided with a radially outwardly projecting indicator tab 78, 79, which, in the closed position of the dispensing valve 52, are in a partially overlapping and directly adjacent relative arrangement. The indicator tabs 78, 79 primarily serve to clearly indicate the closed position of the dispensing valve and are not functionally involved in the design of the locking device.

[0045] Due to their comparatively massive design, the indicator tabs 78, 79 nevertheless allow the formation of an additional mechanical blocking mechanism, which prevents the handle 52 from being moved beyond the in Fig. 11The depicted locking position can be pivoted counterclockwise with excessive force, potentially damaging the housing stops 61, 62 and the handle stops 69, 70.

Claims

1. A discharge tap (10, 51) for liquid containers, in particular for connecting to the outlet neck or the outlet opening of a transportation and storage container for liquids, having a tap housing (11, 80) in which a valve body being pivotable around a valve axle by means of a handle (12, 52) for opening and closing a flow cross section of an outlet tube (13) is arranged, a housing dome (23, 53) being formed at the outlet tube for mounting a valve shaft (20) provided with the handle at its shaft end (21 and extending out of the outlet tube, said handle being connected to the valve shaft in a torque-proof manner and being arranged on the shaft end with a hub part (18, 56), said hub part being provided with a handle stop (25, 69) for defining a shut-off position of the valve body and the housing dome being provided with a housing stop (27, 61), said handle stop and said housing stop being able to be locked relatively to each other via a securing device (16, 77) for securing the shut-off position, characterised in that the securing device (16, 77) comprises a stop bolt (17, 71) which is held at a guiding device arranged at the hub part (18, 56) and can be displaced between a locking position and an unlocking position in a translatory manner in direction of the valve axle by means of the guiding device, said stop bolt (17, 71), when in the locking position, being positioned in an engagement arrangement with a first bolt stop and a second bolt stop for securing the shut-off position.

2. The discharge tap according to claim 1, characterised in that the guiding device is formed as a guiding web (33) which is formed as an integral part of a circumferential wall (32, 55) of the hub part (18, 56), a through opening (35) being formed in a bottom wall (34, 58) in the transition from said guiding web to the bottom wall of the hub part in order to displace the stop bolt (17, 71).

3. The discharge tap according to claim 2, characterised in that the stop bolt (17, 71) comprises a bolt leg (29, 74) for locking with the bolt stops and an actuating leg (30, 75) for handling the stop bolt, said bolt leg and said actuating leg being arranged essentially parallel to each other and being connected to each other at adjacent ends via a stop base (31, 73), said stop base, when in the locking position, resting on an opening edge (39) of the through opening (35) formed by the upper end of the guiding web (33).

4. The discharge tap according to claim 3, characterised in that the stop base (31, 73) comprises a surface (41) arranged flush in a visible surface (42) of the bottom wall (34, 58) of the hub part (18, 56) when in the locking position of the stop bolt (17, 71).

5. The discharge tap according to claim 3 or 4, characterised in that the bolt leg (29) comprises a bolt stop (47), which limits the displacement of the stop bolt (17) into the unlocking position and interacts with the hub part (18), for forming a retaining device.

6. The discharge tap according to any one of the claims 3 to 5, characterised in that the actuating leg (30) of the stop bolt (17) comprises an attaching device for attaching a tamper-proof seal.

7. The discharge tap according to claim 6, characterised in that the attaching device is formed as a through opening (46).

8. The discharge tap according to claim 7, characterised in that the attaching device is formed as a through opening (46) in a radially protruding handling web (45) of the actuating leg (30).

9. The discharge tap according to any one of the claims 1 to 8, characterised in that the first bolt stop is formed by the housing stop (27) of the housing dome (23) and the second bolt stop is formed by the handle stop (25), said housing stop (27) being received between the handle stop (25) and the stop bolt (17).

10. The discharge tap according to claim 9, characterised in that the housing stop (27) is formed by a stop tab (81) arranged on the outside of the housing dome (23).

11. The discharge tap according to any one of the claims 1 to 8, characterised in that the first bolt stop is formed by a first housing stop formed at the housing dome (53) and the second bolt stop is formed by a second housing stop formed at the housing dome and the stop bolt (71) is received between the housing stops.

12. The discharge tap according to claim 11, characterised in that the first bolt stop is formed by a first axial end (67) of an edge web (60) formed circumferentially at the upper edge (59) of the housing dome (53) and the second bolt stop is formed by a second axial end (72) of the edge web (60) arranged opposite the first axial end (67).