DE8327933U1 - ADAPTER - Google Patents

Description

Schulz + Rackow GmbH, 3554 Gladenbach

adapter

description

The present invention relates to a clip-on adapter for a liquid gas tank.

Conventional slip-on container connections have a filling and Withdrawal valve in combination with a pressure regulator part that can be coupled. This results in a reduction in the tank valve the tank pressure to the consumption pressure, usually 50 mbar. The one arranged between the tank valve and the pressure regulator part Sealing element, e.g. a rubber ring, is therefore only subjected to low pressure. This is also when the Regulator, it is easy to attach the pressure regulator part to the tank valve with the aid of a ball coupling. When opening the check valve all that is required is to overcome low pressure by hand using the coupling process.

Increasingly, however, consumer devices for industrial and other purposes that only operate at high pressure are used will. For example, a high-pressure extraction device (adapter) is also available for plug-on container valves for burners, camping stoves, lights and the like necessary.

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DE-PS 763 658 discloses a pressure reducing valve intended for low pressure consumption with a regulator diaphragm and two one behind the other Known valves, of which initially only one, a check valve, is effective in the normal working pressure range is. Only when it is exceeded does the other valve reduce its passage cross-section. The lower valve is now off Defective or ineffective for any reason, high pressure is present, but this is fully intercepted by the other downstream valve will. As a result, such a device is fundamentally unsuitable for high pressure extraction.

In FR-PS 1 133 075 a control valve for portable gas ( ) described device that is screwed into a threaded attachment that is attached to a liquid gas cylinder with elastic clips is to be attached. This is pierced by a spring-loaded square needle, whereupon gas enters a centric Chamber of the control valve flows. A throttle section designed as a needle valve connects transversely to its main part, behind which a receiving thread for a consumable device follows. The handle of the needle valve penetrates a sheet metal cylinder, which the Enclosing the head of the gas cylinder and the foot of the consumer device. Such a device is only suitable for withdrawing gas at relatively low pressure because there is no safety device whatsoever; it is neither a pressure relief valve nor one additional shut-off option available. Also, no precautions have been taken to avoid large amounts of gas escaping in the event of a handling error.

In some common arrangements, the high pressure connection must first be coupled to the tank valve for safety reasons and then the consumer can be connected. In the reverse order, the container valve would already be open before the Ball coupling has reached its end position. Then there would be high pressure immediately, which counteract the unlatched removal device would, and depending on the pressure prevailing in the container the coupling would be difficult or impossible. aside from that

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the seal would be lost and something that has already leaked out Gas got into the atmosphere or into the installation room of the system. Even the correct order can be problematic, when the adapter is disconnected from the container valve when the consumer is screwed in. In this case, the hurls Ruling high pressure with the gas, which during the uncoupling process still escapes from the container, facing the entire attachment towards the person handling it.

To resolve such difficulties, a push-on high-pressure connection has been proposed in DE-GM 72 24 987, the one Spring-loaded plug-in ball coupling that can be locked and released with one handle and one centered in the threaded connector of a housing arranged, longitudinally displaceably guided actuator which acts on the plunger of the container valve. This arrangement has proven itself in practice, as it guarantees the necessary security. The previously known connection, however, has a larger one Construction height and requires a relatively large amount of construction, assembly and manufacturing effort.

The same applies to one in DE-GM 81 2? 720 described High pressure connection for gas devices, which has a spring-loaded plug-in ball coupling. Here are the case and one with him screwing cap over a guide body with each other connected, the upper part of which has a threaded receptacle. In this protrudes the Kope of an actuator that is on the plunger of the Container valve acts. If the cap is turned forward and then a gas device is screwed into the threaded receptacle, over the actuator opens the tank valve. Only when this is closed again, i.e. after turning the cap back or unscrewing the consumer device, the ball coupling can be released. The overall height is relatively large, so it There are applications for which this construction is less or not considered.

In a development according to EP-A1-0 056 071, one is longitudinally displaceable on the housing of a high-pressure connection

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- Seated sleeve provided, the axial position of which the operability the ball coupling determined. Is a consumer device on the If the high pressure connection is screwed on, the sleeve blocks the ball coupling clamping ring and the whole unit cannot open the tank valve of a liquid gas tank can be attached. Conversely, you have to first couple the adapter on for yourself | and then clip the consumer into the thread of the housing |

until the actuator hits the plunger of the container | valve opens and therefore at a shut-off device of the gas appliance! High pressure is pending. The latter is ERS during disassembly ^first: taking, so that the container valve is closed and the high pressure 'port can ever be removed from the container when the sleeve C namely the ball clutch clamping ring releases it again. However, this construction is still complex to manufacture. Therefore, there is a need for a simplified extraction device.

It is an important aim of the invention, overcoming the disadvantages of the prior art, to use economical means to create an improved adapter of the type mentioned at the beginning, which is of simple plug-on construction, meets all safety requirements and allows high-pressure gas extraction from liquid gas containers ^ conveniently made possible. It should be particularly suitable for convenient use with smaller consumers and outdoors, for example with burners used for camping ₍ stoves, lights, etc.

The basic idea of the invention is given in the characterizing part of claim 1. Thereafter, the switching device has a arranged in the gas passage throttle section. This can be designed as a needle valve according to claim 2 and / or loud Claim 3 be removably built into the switching device. By integrating the throttle section in the switch, the invention makes a considerable improvement in the properties of use of the adapter. Not only is a secure high-pressure withdrawal guaranteed, but it is also possible to make the connection one-sided to use. In order to secure transport, so-called collar bottles are common, in which a sheet metal collar

Fittings against external influences such as falls, knocks and blows or the like. protects. Such a protective collar has only one opening, so that an operation from two sides is not possible or very difficult. The adapter according to the invention is suitable also ideal for these collar bottles.

Further refinements of the invention are the subject of the claims 4 to 12.

The arrangement according to claims 4 to 6 is simple Make sure that assembly and disassembly of the throttle section can be carried out comfortably and quickly. At the same time, the operation of the Needle valve facilitated without the operability of the switching device would be affected in the least.

The position and movement limitation of the needle valve is ensured by the measures of claims 7 and 8.

Thanks to the features of claims 9 to 11, it is achieved with very little effort that the plugging and unplugging of the adapter only possible when the switching device is in the "Off" position is. This increases work safety enormously, because the user is forced to switch off the adapter before any manipulation.

Claim 12 provides an additional safeguard in the event of a leaky cylinder valve, which is effective when the adapter is switched off.

Further features, details and advantages emerge from the following description of exemplary embodiments and application examples with reference to the drawing. Show in it:

Pig. 1 is an axial sectional view of an adapter according to the invention,

2 shows a side view, partly in section, of an adapter with a plugged onto a liquid container Brenner and

Fig. 3 is a side view similar to FIG. 2, but with one Lamp.

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In Fig. 1, the adapter designated as a whole by 10 is on its own shown. It has a housing 12 with a threaded extension 14 into which a gas passage 16 opens. This is a switching device 18 upstream with a pivot lever 20.

The housing 12 has a neck 22 on which a catch 24 is arranged. A valve actuator is seated centrally in the housing neck 22 26 with a compression spring 27.

With the axis of the pivot lever 20 is in alignment with the switching device 18, a throttle section in the form of a needle valve 30 is used. This has a guide body 70, which at the same time forms the shaft for a switching eccentric 28, and a shaft or core bolt 32 which is axially movable in the guide body 70. The pivot lever 20 has a handle 38 from which a screw head 40 protrudes, which is fixed against rotation with the shaft or core bolt 32 'is bound. To facilitate operation, the screw head 40 can have a knurling 42.

The guide body 70 is provided with a suitable profile which ensures that it is secured against rotation with respect to the pivot lever 20. A limiting pin 46 seated in the guide body 70 engages in a radial groove 48 of the shaft or core bolt 32 in order to limit its axial adjustment to a specified maximum stroke. In the housing 12, the guide body 70 is through a plug fuse in the form of a clip 66 is removably supported.

At the transition to the neck 22, the housing 12 has a pivot bearing 68 for a detent 24 which is loaded by a spring 34 and has a latch 44. The latter is intended to engage in a radial groove of the container valve V when the adapter 10 is on a liquid gas container B is attached (Fig. 2 and 3). In the "on" switch position of the pivot lever 20 there is one on it attached nose 36 of the catch 24 opposite, so that this can not be actuated. Only when the handle 38 of the pivot lever 20

iond so that it is turned into the "Off" switch position is, the catch 24 can be moved against the force of the spring 34 upwards, so that the pawl 44 moves outward and the plugging or detaching of the adapter 10 on the container valve V is allowed.

An eccentric 28, which is located in the space of the gas passage 16 and is arranged upstream of the actuating member 26, is also fixedly connected to or in one piece with the guide body 70. In the illustrated switching position "On" of the switching device 18, the eccentric 28 pushes the actuating member 26 downward against the force of the spring 27. Because the actuator 26 to the (not shown) plunger of the container valve V is in, the latter is opened in this Vsise. By pivoting the lever 20 into the "off" switch position, the eccentric 28 releases the actuating member 26 so that it is moved upward by the spring 27 and takes on the function of an additional closing valve downstream of the container valve V.

In the "on" switching position shown, high pressure is present in the gas passage 16. Through the cone at the top of the shaft 32 the gas flow can be adjusted sensitively with the needle valve 30 and, if necessary, also shut off completely.

Typical applications of the adapter 10 are shown in FIGS. It can be seen that he is on the container valve V one Liquefied gas container B is attached and the switching device 18 is set to the "On" position. Therefore the nose is 36 of the pivot lever 20 of the catch 24 blocking this opposite.

A consumer gas device G is placed on the threaded extension 14 of the adapter housing 12, in the example of FIG FIG. 2 shows a camping burner, in the example of FIG. 3 a lamp. The adapter 10 now enables one-sided operation of the Needle valve 30 via screw head 40 through an engagement opening E in the bottle collar K of the liquid gas container B.

All features and advantages of the invention which are evident from the claims, the description and the drawings, including Constructive details and spatial arrangements can be used both on their own and in a wide variety of combinations be essential to the invention.

■ :; ■■■: *: '. . Legend G 410 adapter B LPG tank .! ■ · ·· ■ · _ "12 -" " 10 casing E Access opening • 12th Thread attachment G gas appliance 14th Gas passage K bottle collar 16 Switching device V tank valve 18th Swivel lever 20th Case neck 22nd Rested 24 Actuating element 26th Compression spring 27 eccentric 28 Throttle line / needle valve 30th Core bolt / eccentric shaft / shaft ( 32 feather 34 nose 36 Handle 38 Screw head 40 Knurling 42 pawl 44 Limiter pin 46 Groove 48 Clip 66 Pivot bearing 68 Guide body 70 (

Claims (12)

DIPL-PHYS. KARL H #; Ö ^ BRf £ MX: ':,. "Wo / office, am weinberq« PATENTANWALT D-3551 NIEDERWEIMAR / HESSEN STAATL QEPR. OB ERS ETZER phone. (06421) 78627 TELEQRAMME: PATAID MARBURQ 26.09.1983 G 410 Ot / De Schulz + Rackow GmbH, 3554 Gladenbach Adapter protection claims 1. Adapter (10) for attachment to a container valve (V) of a liquid gas container (B), with a housing (12) which has a threaded attachment (14) for screwing on a gas consumption device (G) and a lockable gas passage (16) and a switching means (18) for the blocking _r released or a catch (24) which defines the housing neck (22) at the top of the container valve (V), the plunger (S) comes to an actuating member (26) to the plant, with to which an eccentric (28) of the switching device (18) is positively connected, characterized in that the switching device (18) has a throttle section (30) arranged in the gas passage (16). 2. Adapter according to claim 1, characterized marked, that the throttle section (30) is designed as a needle valve. 3. Adapter according to claim 1 or 2, characterized in that that the throttle section (30) is removably built into the switching device (18). Il · I · I Il Il III · ■ · 4. Adapter according to claim 3, characterized in that the throttle section (30) has a screwable core bolt (32) which is in the shaft of the eccentric (28) f is performed. f. 5. Adapter according to one of claims 1 to 4, characterized g e- ! ·. indicates that the switching device (18) .: Has a pivot lever (20) in whose axis of rotation the Throttle section (30) sits. 6. Adapter according to Ansnruch 4 and 5, characterized in that the pivot lever (20) has a screw head (40) for ) protrudes the core bolt (32). 7. Adapter according to at least one of claims 2 to 6, characterized in that the switching device (18) has a guide body (70) for the needle valve (30) which is held in the housing (12) by means of a plug-in fuse (66) is. 8. Adapter according to at least one of claims 2 to 7, characterized in that the switching device (18) a limiter (46, 48) for the axial movement of the needle valve (30). 9. Adapter according to at least one of claims 1 to 8, characterized in that the switching device (18) has a nose (36) to which a spring-loaded detent (24) is assigned such that the latter is only in the switching position "Off" the switching device (18) can be actuated. 10. Adapter according to claim 9, characterized in that that the catch (24) is integral with a pawl (44) which enters a radial groove in the container valve (B) when the adapter (10) is attached. 11. Adapter according to claim 9 or 10, characterized in that that the nose (36) on the pivot lever (20) of the switching device (18) is arranged, in particular on the handle (38). 12. Adapter according to at least one of claims 1 to 11, characterized in that it has a closing valve (26) contains, which can be controlled from an eccentric (28) of the switching device (18).