DE7526709U - Radiator lockshield with drainage device - Google Patents

Description

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Aug. 22, 1975 8359-IV / He.

F.W. Oventrop Arn = Sohn KG, 5787 Bigge-Olsberg 1

"Radiator lockshield with drainage device"

The innovation relates to a radiator lockshield with a housing with a first connection flange on the radiator side, one in a second connection flange on the system side and a third connection flange for drainage, in which a thread-guided emptying device is axially displaceable and is used for emptying from the open position into a closed position is rotatable, in which it closes the system-side connecting flange and the way from the radiator-side connecting flange releases to the connection flange for draining,

Such a screw connection is known from DT-GbmS 7 * 118 167 and also allows a pre-setting of the water flow through the radiator by means of the drainage device. A disadvantage, however, is the division of the emptying device into a throttle and shut-off body on the one hand and a sealing body overhanging the latter on the other hand, which has the consequence that the O-ring migrating with the sealing body on the shut-off body is not only exposed to heavy wear but also - there he is completely lifted off the shut-off in the drain position - can be flushed out of his bed. A further drawback of this known screw is that animal WIRO seal body carried along by rotation of a placed onto the connection flange for the emptying of drainage spout ₃ so that because of the necessary axial compressor

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Shifting the grommet cannot be axially fixed and there is a risk that it will be caused by the internal pressure or the application of force is torn from the outside of the screw connection and uncontrolled water flows out. In addition, it comes with the S) row the grommet inevitably to twist any connected Emptying hose. Finally, the outer surface of the connecting flange that is overlapped by the grommet, on which an O-ring also moves, must be carefully machined, but is unprotected when the grommet is removed, so that this surface can already be damaged during transport and assembly of the screw connection and This means that a sufficient seal can no longer be achieved at this point later.

Another radiator return screw connection is from the DT-GbmS 7 111 825 known. Their emptying device comprises a drain valve with a spring-loaded ball. The feather lies in the hot water circuit. It has been shown that fittings of this type with parts moved by spring force can guarantee the required absolute operational safety over many years.

The innovation is based on the task of providing a radiator return ver very ziubung of the type specified in the introduction create, while avoiding the aforementioned, the known Versehraubungen adhering defects a manufacturing technology has a simple emptying device »which can be operated easily and reliably.

According to the innovation, this object is achieved in that the emptying device from a tool rotatable, axially displacing regulating body and a threaded spindle arranged axially displaceably in this consists, which in the closed state with a sealing surface formed on its inside end has a valve seat in the

The regulating body closes, from the connecting bores to the one with the connecting flange of the housing on the radiator side

ι lead communicating housing interior *

i
\ This configuration ensures that the regulating

i body and the threaded spindle are inexpensive on automats

Have j made from bar stock. It also results

I by doing without additional sealing elements between the

! Threaded spindle and the regulating body have a particularly high loading

i drive reliability.

i
j

I An expedient embodiment is that the Ge-I Winding spindle has an axial blind bore which is connected to the interior of the regulating body via bores.

; In a further embodiment of the innovation concept, the : Threaded spindle at its outer end attachment surfaces for ! have the engagement of an emptying tool.

A particularly preferred embodiment of the screw connection

I is characterized by the fact that on the connection flange for the

I emptying an emptying tool can be connected, which consists of

j a union nut with a sealed and rotatable

! guided, secured against axial displacement and a central

Ie through hole having emptying key whose \ Innens "? Itiges end to the outside end of the threaded spindle in positive connection is and allows the axial Move and exercise, there is. This is advantageous! is enough that the inevitable axial displacement of the threaded spindle to release the drain holes in the drainage; wrench is picked up without this an axial locking

Shift executes * This enables a further embodiment I of the screw connection to the effect that in the outer end S of the emptying key a hose coupling is sealed and rotatably guided and secured against axial displacement

is, whereby it is achieved that the drainage hose when opening the drain holes caused by turning the emptying tool, it is not twisted.

The screw connection according to the innovation is based on an exemplary embodiment shown in the drawing. It shows:

j Fig. 1 shows a longitudinal section through the screw connection in ! drive position and

j FIG. 2 shows a longitudinal section through the screw connection in the emptying position and with the emptying tool attached.

The fitting consists of the housing 1 into which the regulating body 6 is screwed, with the sealing between the housing 1 and the regulating body 6, the O-ring 7 is used.

In Fig. 1 the valve is shown in the operating position, i.e. the regulating body is in the open position, the emptying spindle 3 is closed, the valve is protected by cap 8 and sealing ring 9 against unintentional actuation and unintentional water leakage protected. The regulating body ί can be set to any throttle position. This makes it possible to control the water flow through the radiator in Connection with flow diagrams that provide information about the number of opening revolutions to be selected.

In Fig. 2 the fitting is shown with the draining tool screwed on, the right half of which is the draining spindle 3 in the closed position and the left half shows the same in the open position. Before screwing on the emptying tool the cap 8 is removed from the valve and the throttle body 6 using a commercially available wrench closed. After screwing on the hexagon nut 2, you can use!

- 5th

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Emptying key ¹ I the emptying spindle 3 can be opened. The water from the radiator connected at 10 can now pass through the bores 13 of the throttle body to the hose connection 5, the heating system connected at 12 being closed by the lower part of the throttle body 6.

The emptying tool consists of the hexagon nut 2, the emptying key ¹ J and the hose connection 5, the parts being interconnected by snap rings 13 and 14 so that they can rotate but cannot be moved axially. The sealing of the parts from one another is done by the O-rings 15 and 16. The emptying tool has the particular advantage that when the emptying key 4 is operated, the water hose connected at 5 does not have to be twisted. Hose coupling 5 and emptying key k are each provided with two toggles 17 and 18, which ensure easy handling.

7526709 04/29/76

Claims (4)

PATENT LAWYERS .- · .. «. .- ·. _:: . · »::» · DIETRICH Lewinsky _t \ y ' : ::: ·:: HclNZ-JOACHIM HUBER
RElNtR PRIETSCH MUNICH 21
GOTTHARDSTR. 81 Aug 22, 1S75 P. W. Oventrop Arn. Son KG 8359-IV / vm Protection claims: ι 1.) Radiator lockshield with a housing with a ^ - ^ first, radiator-side connection flange, a second, system-side connection flange and a third connection flange for emptying, in which a threaded emptying device sits axially displaceable, which for emptying from the open position in a The closed position is rotatable, in which it closes the system-side connecting flange and clears the path from the radiator-side connecting flange to the connecting flange for emptying, characterized in that the emptying device consists of a regulating body (6) which can be rotated by means of a tool and is axially displaceable therein and one axially displaceable therein arranged threaded spindle (3), which in the closed state with a sealing surface formed on its inside end closes a valve seat in the regulating body (6), from the connecting bores (11) to the connecting flange of the housing with the radiator side ( 1) lead communicating housing interior. 2. Screw connection according to claim 1, characterized in that the threaded spindle (3) has an axial blind bore that extends over Bores with the interior of the regulating body (6) is in communication. 7526709 04/29/76 3 · Screw connection according to claim 1 or 2 _? characterized in that the threaded spindle (3) has attachment surfaces at its outer end for the engagement of an emptying tool. 4. Screw connection according to one of claims 1 to 3, characterized in that an emptying tool can be connected to the connection flange for emptying, the old sealed and rotatable therein from a union nut (2), secured against axial displacement and having a central passage opening emptying key ( ¹ O, the inside end of which is in a force-locking connection with the outside end of the threaded spindle (3) and allows its axial displacement, exists. 5. Screw connection according to claim ¹ I, characterized in that a hose coupling (5) is sealed and rotatably guided and secured against axial displacement in the outer end of the emptying key (4).