DE7245475U - Shut-off valve - Google Patents

Description

Reference;

Guido Oberdorfer, 7919 Beilenberg, Werkstr. 22nd

Shut-off valve

The innovation concerns a shut-off valve for a spray lance with manual actuation via operating lever.

Such shut-off valves are known from high-pressure cleaning devices, in which the liquid flow to Spray lance is interrupted. With known high pressure cleaning devices but actuation of the shut-off valve by means of a finger lever in the manner of a pistol

LT, CV

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Telegraph office hours: bank account - postal check account:

05 4374 by arrangement Bayer Vereinsbank Lindau (B) No. 120 85 78 Munich 295 25-809

Bayer.Hypctheken-u Wechsel -Bank Lindau (B) Nr 278920

794R47I

f. OCT.

handle provided. Such an operation of the Shut-off valve is very tiring for the operator, because the Sprühiaf.zs only with this type of actuation can be operated with one hand. In addition, the constant pressing of the shut-off valve with just one finger is a must sometimes high operating forces very exhausting. In addition, these shut-off valves are known because of their complicated mechanics very susceptible to sealing and wear resistance. A pistol handle perpendicular to the working direction easily leads to the risk of breakage of the handle and also prevents it from being reached ven inaccessible places to be cleaned. Last but not least, such a design of a shut-off valve in Pistol shape also more expensive due to the increased casting and machining costs.

The task of the innovation is to create a shut-off valve for a spray lance, which is anatomical Can be operated easily and safely and without great effort according to points of view, while at the same time the The shut-off valve should be small and cheap and functionally reliable, with only a minimal number of moving parts.

The solution to this problem is achieved in that the inlet and outlet openings of the valve are approximately in a horizontal position.

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7P45475 MML "ι.mcr.

\ right level, parallel to the watercourse, with

one arranged in the interior of the valve body perpendicular Chamber with valve tappet, actuated by a hand lever parallel to the water supply is provided.

Due to the new features, the structure of the Align the shut-off valve and its actuation with the water flow or anatomical aspects, brings great benefits. The shut-off valve is now operated fatigue-free by means of a hand lever parallel to the water flow. The forearm of the actuating hand is supported in the extension of the spray = lance along the feed pipe and thus relieve the pressure the wrist, which, for example, when operated with the pistol handle, the entire pressure of the water jet and would have to support the weight of the spray lance. The second hand can be in the handle of the before the first hand Grip the spray lance in order to continue the forces generated when cleaning with the spray lance in anatomical terms correctly transferred to the operator's body without getting tired.

The construction of the shut-off valve can be made through the parallel routing of the inlet and outlet opening to the water supply or a chamber perpendicular to it, in particular

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To be made small and handy. With only one moving part, the valve stem, the valve is very cheap and functionally reliable.

It is advantageous that the valve seat of the plunger and the corresponding bearing seat in the housing are conical is. This results in a reliable sealing of the liquid flow with nevertheless low bearing pressures, which in turn reduces the effort required to operate the valve tappet.

For a gradual regulation of the flow pressure, it is advantageous to provide the valve tappet with radial gradations. Depending on the increase "it tappet practice" ¹ - the operating lever can be changed so the cross section of the outlet opening out gradually.

Locking means can also advantageously be used to ensure that the valve stem opens continuously, even if the operating lever is not pressed. For this purpose, there is a at the lower end of the valve stem Groove provided in which a pawl attached to the housing engages, which the valve stem in its Fixed position. After releasing the pawl, the shut-off valve can be operated in the usual way using the hand lever be made. However, the hand lever can also

7745475

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with a locking bracket, which removes the hand lever from the handle from includes, to be fixed in an open position »

It is also advantageous to provide a protective bar which prevents unintentional actuation of the hand lever prevented.

The innovation is explained in more detail below with the aid of drawings *

Show it:

1 shows a view of a spray lance with the shut-off valve according to the invention attached.

Fig. 2 shows above all the position of the inlet and outlet of the valve Representative cross-section through the shut-off valve, but without the inevitable gradation of the valve stem,

3 shows an embodiment of a valve tappet with radial steps for changing the flow cross-section in steps.

Fig. 1 shows the water supply in the form of a water hose 1, which opens into the shut-off valve 2, wake up at the rear End of the spray lance 3 is located. The hand lever 5 for actuation the shut-off valve is surrounded by a protective bracket 4, the

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7H5475

both protects the operator's hand and prevents unintentional triggering of the hand lever during cleaning breaks. Furthermore, the arrangement of a locking bracket can be seen from Fig. 2, which engages in notches of the hand lever can be brought to ensure constant opening of the shut-off valve. Of course, such Locking elements can also be provided in other ways, for example in In the form of hinged locking lugs or adjusting screws that act on the hand lever at the rear end of the protective bracket and can be adjusted depending on the degree of opening of the hand lever.

Fig. 2 shows the water inlet opening 6 and the outlet opening 7 towards the spray nozzle. This inlet opening 6 and outlet opening 7 are approximately parallel in one Provided lying flat in the housing 8, while in a vertical chamber 9 the valve tappet Io via the hand lever 5 can be operated. A spring 11, which is supported on a closure piece 12, brings the valve stem Io and the hand lever 5 after the end of the operating process back to the starting position. The valve tappet Io is '"' ■■ ·. in its upper end 13 as well as the corresponding bearing seat in the housing made conical to a good Achieve sealing. A pawl 14 can with a groove 15 at the lower end of the valve stem Io in Intervention can be brought to so the shut-off valve even without

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Manual actuation via the hand lever is constantly open allow.

Fig. 3 shows the design of a valve tappet with radial gradation, around the flow cross-section and thus to be able to change the flow pressure via the hand lever depending on how the tappet is raised. Such a gradual one Regulation of the water jet at the nozzle can be advantageous, uüys.B. To fill vessels or doormats and other things to clean sensitive parts and the like. Of course, this pressure control can only be used with a spray lance use a water supply hose with a pressurized can only within certain limits. Because if the cross-sectional constriction is too great the pressure cell of the water pump responds and turns it off, care must be taken that E.g. the first stage of the pressure reduction by means of the radial gradations in the valve tappet is so small that that the water pump is not damaged or switched off via the pressure cell. With this gradation of the valve lifter pressure regulation can then be brought about, at least within certain limits, during this with only a simple design of the valve is difficult to achieve, for example by slightly lifting the hand lever, because if, for example, the pressure is raised too much, the pressure will immediately back up and the pump will be switched off.

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_ Q_

By building a spray lance according to Fig. 1 unu the The corresponding shut-off valve according to FIG. 2 has succeeded in fatigue-free work by simple means to be achieved with a soMien spray lance with a simultaneously cheap and functionally reliable shut-off valve, which is anatomically correct in the overall construction inserts. Such shut-off valves can also be added to existing spray lances at a later date, whose shut-off valves have the disadvantages mentioned at the beginning -

Protection claims

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Claims (5)

Protection claims 1. Shut-off valve for a spray lance with manual actuation via operating lever, characterized in that inlet and outlet openings 16.7) of the valve (2) are approximately in a horizontal plane parallel to the water flow with a vertical chamber arranged in the interior of the valve body (8) (9), with valve tappet (lo), the actuation of which is provided by a hand lever (5) lying parallel to the water supply. 2. Shut-off valve according to claim 1, characterized in that the valve tappet (lo) is provided with a conical sealing surface. 3. Shut-off valve, characterized in that the valve stem with radial gradations on his To & ng is provided. 4. Shut-off valve according to AnspLUch 1, characterized that locking elements such as a pawl (14) or a locking bracket are provided for fixing the valve stem are. -Io - ^{no /} i ^{c /} i7 ^r JiMtID - - » -IO- 5. Shut-off valve according to claim 1, characterized in that a protective bracket (4) is provided against unintentional triggering of the hand lever. 7245475 ***** ~ Oct 9th, current