DE2202594A1 - BUTTERFLY WITH A ROTATING LOCKING PART - Google Patents

Description

Dipl. Phys. Dr. rer. nat. Wolfgang Kempe

PATENT ADVOCATE

Styles-Craft Manufacturers, Inc. 1801 Lilly Avenue

St. Louis, Missouri, USA

68OO Mannheim 25

DUrerstrasse 91

Phone: Office (O621) 28937 Apartment CO6 21) 4O95 91

Postal address: 68OO Mannhelm 1 Postfsch 1Ξ73

January 19, 1972 Si 4

"Shut-off device with a rotatable closure part"

The invention relates to a shut-off device with a rotatable Closure part, in particular a shut-off valve with ball plug, the housing of which has an opening for the passage of a Has operating pin.

Such shut-off devices are often needed where a quick and effective shut-off or flow diversion in hydraulic systems is required.

It is important that the shut-off device operator always be aware of the flow conditions within the shut-off device

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is clear and therefore it is necessary that he always have an overview of the position of the inner movable elements Has. For this purpose, for example, stop cocks with ball plugs usually have marking points that indicate the position of the ball plug and thus the flow conditions through the stopcock. In some cases it becomes elongated Handle that is used to operate the stopcock also used as an indicator. However, this has several disadvantages. For example, if the handle is not very tight

not/

if it sits and offers greater resistance to its movement, it tends to be sensitive to accidental movements and it can easily be actuated by mistake. If, on the other hand, the handle offers too much resistance to its movement, the operation of the shut-off device becomes too difficult and thus such a solution is very unsatisfactory.

Locking arrangements that allow the closure part in certain Holding positions may be the best approach to solving this problem. However, they are no successful locking arrangements have become known that hold the operating handle in a predetermined position.

The present invention was therefore based on the object of a simple, effective and inexpensive to manufacture arrangement to create, in which the operating handle of a shut-off member with a rotatable closure part on the one hand simple way the actuation of the closure part and on the other hand the display of the exact internal flow conditions of the

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Shutoff causes. With the help of a locking mechanism located on the outside of the shut-off element, the with the rotatable closure part connected operating handle can be held in a predetermined position in which he is not sensitive to unintentional movements. Such an arrangement of an operating handle is in particular useful in connection with a shut-off device which has a housing with a rotatable spherical closure part in the Has interior.

This object is achieved according to the invention in a shut-off device of the type described at the outset in that a first Latching element with a bore for the passage of the operating pin and with a latch arrangement is provided that There are locking means between the housing and the first latching element, which allow both of them to rotate relative to one another prevent an operating handle from being detachably connected to the operating pin, and furthermore a second latching element, which is selectively engageable with the pawl arrangement of the first latching element, the locking part in a predetermined position is set, is arranged movably with respect to the operating handle, and that finally the first latching element at its edge through at least one notch forming the pawl arrangement and the second latching element a substantially parallel to the operating pin movable, fixed on the operating handle pin is formed whose enlarged lower end piece can snap into the notch and manually disengage from the Notch can be brought.

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In an expedient development of the invention, it is proposed that the first locking element is and be removably arranged Edge has a plurality of notches, each forming a latch arrangement, that the pin is resiliently mounted on the operating handle and its enlarged lower end piece can optionally snap into each of the notches, and that the locking means of interlocking tongue and groove part exist, wherein one of the two parts is attached to the housing and the other to the first latching element.

The subject matter of the invention experiences a further advantageous embodiment in that the opening in the housing on its after Inwardly directed end piece has a concentric recess as a stop and the operating pin has a collar which rests against the recess so that the operating pin can slide out is prevented from the housing, and has a bearing surface for the first locking element - .. that the first Latching element contains a limit stop for the rotational movement of the operating handle, and that the pin consists of one Shaft, an upper and a lower enlarged end piece and one around the shaft and between the enlarged end piece and the operating handle arranged spring.

It is also proposed that the first locking element expediently as a plate with a plurality of laterally open Notches is formed into which the enlarged lower end portion of the pin can snap, and that the shaft of the pin engages the plate can be moved past unhindered.

Further details of the invention and useful developments are shown below on the basis of a

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provided embodiment described and explained in more detail.

Show it:

1 shows the plan view of a shut-off element according to the invention in the open position;

Fig. 2 is a sectional view taken along line 2-2 in Fig. 1;

3 shows a view of the shut-off element according to the invention from the line 3-3 according to FIG. 2 and

Fig. 4 is a perspective view of an operating pin and a ball plug, which are both part of the shut-off device according to the invention.

The shut-off device with a rotatable closure part, with which together the arrangement of the operating handle used in the preferred embodiment is a stopcock 10 with a Ball plug.

The overall designated 11 arrangement of the operating handle is connected to the housing with the aid of an operating pin 13 'which is connected to an elongated handle 14 12 of the shut-off device attached. The operating pin 13 is in engagement with a locking part, as a rotatable Ball 15 is formed. The arrangement 11 contains a latching mechanism that the operating handle 14 and thus the Ball 15 allows it to be rotated into selected closed positions and to be held in these positions.

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In the embodiment, the housing 12 consists of three parts, a middle part 16 and end parts 17 and 18, which at the two sides of the middle part 16 removable by means of screws 20, which extend through all three housing parts, are appropriate.

As can be seen from Fig. 2, the ball 15 has a right-angled Passage 21, with the help of which the liquid flow either from the inlet port 22 or from the Inlet port 23 can be diverted to outlet port 24. In the embodiment shown in the drawing are the operating handle 14 and the ball 15 in such a Position that the liquid flow, as indicated by the arrows, is passed from the inlet opening 22 to the outlet opening 24 will. By rotating the operating handle 14 Jim 180 °, the flow of liquid through the inlet opening 22 is shut off and the liquid can then be passed from the inlet opening 23 to the outlet opening 24. It goes without saying itself that the liquid flow can enter through the outlet opening 24 and from there either to the inlet openings 22 or 23 if so desired. The size of the rectangular passage 21 through the ball 15 is as follows sized so that all openings 22, 23 and 24 are completely closed by the surface of the ball 15 when the handle 14 is in a 90 ° position. In this position the shut-off element is completely shut off and it takes place no liquid flow takes place. A pair of sealing rings 25 made of Teflon or another suitable material seals the ball 15 against the housing 12. For the seal between the middle part 16 and the end parts 17 and 18 of the housing 12 are conventional circular rings 26.

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The housing 12 has a hub 27 with a bore 28 in which the operating pin 13 is inserted. The operating pin has two annular grooves 31 for receiving a pair of circular sealing rings 30, which are used for sealing between the The operating pin and the bore 28 are used.

As can be seen in Fig. 4, the operating pin 13 has a domed shaped nozzle 29, which in a suitably shaped Slot 39 in the ball 15 can engage. The connecting piece or the slot 39 thus form the two parts of a shoulder <€ ines stop, so that the operating pin 13 the ball 15 can turn.

The arrangement 11 also includes a locking plate 32, which is a first latching element with a bore 33 for receiving the operating pin 13, so that the two rotate with one another can perform. The operating pin 13 has a circumferential support surface 34, which is in the assembled State slightly above the hub 27, as can be seen from FIG. 2, on which the lower edge 35 of the bore 33 rests. The locking plate 32 is prevented from rotating with respect to the housing 12 by fitting tongue and groove parts, which is connected by a rectangular pin 36, which is preferably materially bonded to the housing 12, and a matching U-shaped slot 37, the internal locking plate 32 is provided. The pin 36 is so far removed from the axis of rotation of the operating pin 13, that rotation of the locking plate 32 is reliably prevented by him. After assembly, the locking plate 32 thus acts in as if it were part of the housing 12t

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The operating handle 14 is cranked and is a handle part 38 on. The operating handle 14 is detachably connected to the operating pin 13 so that both parts form a single rotatable unit when assembled. This connection is supported by a non-circular one Bore 40 in the operating handle 14, which receives the appropriately shaped end piece of the operating pin 13. As can be seen from FIG. 4, this is achieved in the exemplary embodiment in that the one provided with an external thread 42 The end piece of the operating pin 13 has flats 41 on two opposite sides, so that the end piece fits into the non-circular opening 40. A retaining nut 43, which fixes the operating handle 14, is screwed onto the external thread 42.

A spring-loaded, depressible one, denoted by 44 The pin forms a second locking element. It is arranged vertically on the operating handle 14 and can move relative to the operating handle and parallel to the operating pin 13. The pin 44 consists of one Shaft 45 with an enlarged lower end piece 46. At the upper end, the shaft 45 has a cap 47. A helical spring 48 is arranged between the underside of the cap 47 and the upper surface of the operating handle 14. Of the Shank 45 slidably engages in bore 50 in operator handle 14 and this arrangement allows pin 44 by hand within the limits, which is determined by the distance between the cap 47 and the operating handle 14, depressed can be. This distance is at least equal to the thickness of the locking plate 32, so that the enlarged lower end piece 46 can be pressed under the locking plate.

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As can be seen in Fig. 1, the locking plate 32 has a plurality of circular arc-shaped notches 51, 52 and 53, the one Form pawl arrangement. The notches 51, 52 and 53 have one Radius which is slightly larger than the radius of the enlarged lower end piece 46, so that this end piece with the Notches can be engaged. In the embodiment, the arcuate notches 51, 52 and 53 are along of the edge of the locking plate 32 attached at 90 intervals. The locking pin 44 is far enough away from the axis of rotation of the Operating pin 13 arranged so that the shaft 45 can freely move past the intermediate edge pieces 54 and 55 located between the notches 51, 52 and 53 when the Pin 44 is depressed. It goes without saying that the diameter of the enlarged lower end piece 46 is sufficient is small so that it can move freely past the hub 25. Thus, if the is under spring tension Pin is disengaged by pressing down from one of the notches, for example the notch 53 », the operating handle 14 and so that the operating pin 13 can be rotated into another selected locking position; the one under spring tension Pin 44 can then subsequently be unloaded so that it moves up into engagement with another notch. The latching plate 32 has a pair of raised stops 56 and for the operating handle to allow rotation of the operating handle is constrained to a semicircular arc.

The operating pin 13, which is rotatable in the housing bore 28 is held in this housing bore by a collar 60 at its lower end piece. The housing bore 28 has a matching concentric recess which receives the collar 60 and serves as a stop for it. This means that the

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Service pin 13 does not slide out of the housing 12.

It can be assumed that the structure and the functional advantages of the shut-off device according to the invention with the associated Arrangement of the operating handle are fully described by the above; nevertheless, in the following The assembly and operation of the device will be briefly discussed.

The assembly of the shut-off element 10 begins with the introduction of the operating pin 13 into the housing bore 28 from the inside of the housing 12. Then the ball used, care must be taken that the nozzle 29 and the slot 39 leagues in the same line. Then v / ground the sealing rings 25 inserted and the end parts 17 and 18 of the housing 12 by means of the screws 20 on the central part 16 attached. As soon as the ball 15 is mounted in a sealed manner with respect to the interior of the housing 12, it is ready to rotate.

The pin 44 is attached to the operating handle 14 by inserting the shaft 45 into the bore 50. Then the The helical spring 48 is placed on the shaft 45, the upper end piece of which then receives the cap 47. So that is Pin 44 is fully installed and can move relative to movement handle 14 under spring tension. The locking plate 32, which is a separate section, is oriented with respect to the housing so that the U-shaped slot 37 is above the housing pin 36 stands. The locking plate 32 can then be inserted over the operating pin 13. Eventually the will not be circular Opening 40 in the operating handle 14, taking into account the flats 41 on the external thread 42 on the

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Operating pin 13 inserted and fastened with the aid of nut 43.

Before the operating handle 14 can now be rotated, the spring-loaded pin 44 must be pressed down so that the enlarged lower end piece 46 disengages from the notch 53 in the locking plate 32. Then the operating handle can 14 can be rotated to any desired position. After the rotation, the operating handle 14 can in certain Positions are locked in that the spring-loaded pin 44 is released when it is in front one of the other notches 51 or 52 is.

The operating handle 14 is mounted so that it at the same time represents a flow indicator. In the position shown in Fig. 1, the operating handle 14 is, for example above the closed outlet opening 53 and the front tip 62 of the operating handle 14 shows the inlet opening 22 through which the liquid flow can now enter. After turning the operating handle at 180 °, the tip 62 shows that the liquid flow can enter through the inlet opening 23. When the operating handle grabbed 14 in the middle between these two positions and the pin 44 is locked in the notch 52, both inlet openings 22 and 23 are closed.

Due to the locking device formed from the housing pin 36 and the slot 37, the locking plate 32 retains an immovable Position in relation to the housing 12. The limit stops 56 and 57 on the locking plate 32 restrict the rotational movement of the operating handle 14 on a 180 ° arc.

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The effectiveness of the locking mechanism is further enhanced by the fact that the locking pin 44 is sufficiently far from the axis of rotation of the operating pin 13 is arranged remotely. Because of this distance, the locking pin 44 and the operating pin form 13 together a rotation lock for the operating handle 14 when the locking pin 44 is engaged.

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Claims (5)

Expectations Shut-off element with a rotatable closure part, in particular a shut-off valve with ball plug, the housing of which has an opening for the passage of an operating pin, by means of which the closing part can be actuated, characterized in that a first latching element (32) with a bore (33) for the passage of the operating pin (13) and is provided with a pawl arrangement that locking means (36, 37) are present between the housing (12) and the first locking element, which prevent rotation of the two against each other, that an operating handle (11) is detachably connected to the operating pin, that furthermore a second latching element (44), which can be brought into engagement with the latch arrangement of the first latching element, the closure part (15) being placed in a predetermined position, is movably arranged with respect to the operating handle, and finally the first latching element at least one notch forming the latch assembly on its edge (51, 52 or 53) and the second locking element is formed by a substantially parallel to the operating pin movable, attached to the operating handle pin (44), the enlarged lower end piece (46) can snap into the notch and by manual actuation disengaged from the notch can be brought. * """^" 309830/0719 January 19, 1972 Si 4 2. shut-off device according to claim 1, characterized in that the first latching element (32) is detachably arranged and its edge has a plurality of notches (51, 52, 53), each forming a pawl arrangement that the pin (44) is resiliently mounted on the operating handle (11) is and its enlarged lower end piece (46) can selectively snap into each of the notches, and that the Locking means (36, 37) consist of interlocking tongue (36) and groove parts (37), one of the two Parts on the housing (12) and the other is attached to the first latching element. 3. Shut-off element according to claim 1 or 2, characterized in that the opening (28) in the housing (12) on its after inwardly directed end piece has a concentric recess having
(61) as a stop end of the operating pin (13) Collar (60) which rests against the recess so that the operating pin cannot slide out of the housing. (34) is prevented, and has a bearing surface for the first latching element that the first latching element has a limit stop (56, 57) for the rotary movement of the operating handle (11), and that the pin (44) from a shaft (45) »an upper and a lower enlarged end piece (46 and 47) and one around the shaft - 15 - 309830/0719 January 19, 1972 Si 4 and there is a spring (48) disposed between the enlarged end piece and the operating handle. 4. shut-off device according to one of claims 1 to 3 »thereby . characterized in that the first Rasteiement (32) as a plate is formed with a plurality of laterally open notches (51, 52, 53) into which the enlarged lower end piece (46) of the pin (44) can engage, and that the shaft (45) of the pin can be moved past the plate unhindered. 5. shut-off device according to one of claims 1 to 4, characterized in that that the closure part (15) is a ball with a passage. 309830/0719 Blank page