WO1992015825A1

WO1992015825A1 - Radiator valve

Info

Publication number: WO1992015825A1
Application number: PCT/DE1992/000158
Authority: WO
Inventors: Helmut Letzel
Original assignee: Metallwerke Neheim Goeke & Co. Gmbh
Priority date: 1991-02-28
Filing date: 1992-02-27
Publication date: 1992-09-17
Also published as: EP0572501A1; JP3142564B2; DE59200301D1; KR0186036B1; DE4106278C2; DE4106278A1; ATE108887T1; JPH06508417A; DK0572501T3; AU1335292A; ES2056709T3; EP0572501B1

Abstract

A radiator valve comprises a housing (1) on which are arranged a pipe union (11) for connection to the radiator and a screw socket (13) for receiving the first closure piece (4), which is arranged on a hollow valve spindle (3). The first closure piece (4), together with a valve seat (33) in the housing (1), forms a choke-like preset device for the throughflow. To allow the line or radiator to be emptied through the hollow valve spindle (3), the hollow valve spindle (3) contains a second valve closure piece (5), which can be actuated from the outside against the force of a spring and moved forward from the outside with regard to a corresponding valve seat in the valve spindle (3). The second hollow valve closure piece (5) is double acting and can be moved, with its end (52) opposite the discharge valve seat (33), through the first valve closure piece (4) toward the housing valve seat (14). A controller (9) which acts on the second valve closure piece (4) can be placed on the valve.

Description

"Heizungsventi1"

The invention relates to a heating valve according to the preamble of claim 1, which is used in a straight seat or angled seat construction in heating systems with several radiators and different lines, mainly in the return line, via such heating valves, which serve to shut off a line, the corresponding part of the system can be used empty.

A heating valve of the generic type is known from DE-GM 71 11 825. In this heating valve, a hollow spindle, which also serves for presetting the flow rate, is screwed into the screw socket of the housing and is screwed against the valve seat in the housing for shut-off and for pre-opening position is displaceable. A ball valve is arranged in the hollow valve spindle, via which the line or a radiator can be emptied. The ball can be moved from the outside against the pressure of the return spring through the hollow valve spindle using a screw-on emptying device and can thus be lifted off its valve seat inside the valve spindle. The front part of this valve spindle is used for presetting. With such heating valves, the necessary operating conditions are taken into account by appropriate presetting in the respective branch. However, it is often found that the operating conditions fluctuate in larger systems, so that a one-time presetting of the flow is insufficient. As a rule, a control valve, usually a membrane regulator, is then used at the appropriate point. Such subsequent use requires high assembly costs.

The object of the invention is to propose a heating valve of the type mentioned at the outset, which can be combined in a simple manner with a pressure regulator.

The object of the invention is achieved with a heating valve with all the features of claim 1.

A controller can be attached to such a heating valve according to the invention, which can be used as a shut-off valve with drainage function and presetting possibility, without the valve housing or the upper part having to be mounted. The controller engages with a corresponding actuating element in the hollow valve spindle and acts against the second closure piece in this valve spindle. Such a heating valve can therefore be converted into a control valve in a simple manner.

According to a preferred embodiment of the invention according to claim 2, the controller can be placed on the outer end of the valve spindle. The controller is thus independent of the housing and can be used advantageously on different valve sizes with different housings but the same valve stem end design. In a further embodiment of the invention, according to claim 4, a possibility is shown to make the presetting visible from the outside. According to claim 5 screw cap and indicator ring form the preset display visible from the outside.

The invention is explained in more detail below on the basis of an illustrated exemplary embodiment. Show it:

1 shows a longitudinal section through a heating valve designed as a shut-off valve with a predetermined presetting

and

2 shows the combination of a heating valve according to FIG. 1 with a membrane regulator attached to the valve spindle.

Reference is first made to FIG. 1. The number 1 denotes the housing of a heating valve. On this housing 1, the connecting pieces 11 and 12 are indicated opposite, which lead to the strand or to the radiator. The screw socket 13 serves to receive the screwed-in valve upper part 2. A valve seat 14 is formed in the interior of the housing 1, against which a first closure piece 4 arranged on the valve spindle 3 acts. In principle, the position of this first closure piece 4 relative to the corresponding valve seat 14 determines the presetting for the flow. With this first closure piece 4, the heating valve can be shut off. In the axial cavity 31 of the valve spindle 3, a double-acting second closure piece 5 can be displaced against the pressure of the spring 6. With its upper closure end 51 it forms with the valve seat 33 in the drain valve in the hollow spindle 3. By placing an emptying device, not shown, the second closure piece 5 with its closure piece end 51 can be lifted off this valve seat 31. For emptying, the water flows from the strand or the heater through the hollow second closure piece 5 into the cavity 31 of the valve spindle and from there to the outside into the attached emptying device. The cavity 53 in the second closure piece 5 is open to the housing. It ends below the closure piece end 51, so that the valve seat 33 is closed in the state shown in FIG.

The opposite closure piece end 52 protrudes through the first valve closure piece 4 and forms with the protruding section the contour of the first closure piece and determines the throttle gap with it. At the top of the valve

2 protrudes the end of the valve spindle 3, a screw cap 8 is placed on a rotary driver 32 in a rotationally fixed manner and secured by a cap 82 firmly placed thereon, which at the same time holds the hollow valve spindle

3 closes.

The presetting is carried out after removing the cap 82 and the screw cap 8. The valve spindle 3 is not moved. This is followed by a corresponding rotation of the indicator ring 7, by means of which a presetting nut 10, which is toothed in the indicator ring 7, is displaced with the adjusting ring 10a accommodated therein in a rotationally fixed manner and drives the valve spindle 3 in the axial direction. The corresponding rotary driving connection is used in section 21 in the valve upper part 2 in connection with the corresponding design of the valve spindle 3 in this area. On the outside of the valve upper part 2, a threaded section 22 is formed, into which the indicator ring 7 entries.

As FIG. 2 shows, a regulator, preferably a diaphragm regulator 9, can be placed on the outer end of the valve spindle 3 with a correspondingly designed section 34, which also serves to receive the cap 82. Its associated screw sleeve 91 protrudes into a shoulder 81 on the screw cap 8. On the control element, in the case of the membrane regulator the membrane, an actuation element 92 in the form of a tube is fastened, which projects into the hollow valve spindle 3 and acts with its free end against the second closure piece 5. Via this actuator, the second closure piece 5 is displaced with its closure piece end 52 in the direction of the valve seat 14 in the housing 1 and thus controls the flow in a controlled manner.

Claims

1. Heating valve, in which on a housing a connecting piece to the line, a connecting piece to the heating element and a screwing piece for receiving the first closure piece arranged on a hollow valve spindle, which forms a throttle-like presetting for the flow with a valve seat in the housing , are provided and in the hollow valve spindle a second valve closure element, which can be actuated from the outside against the pressure of a spring, can be displaced from the outside in relation to a corresponding valve seat in the valve spindle in order to empty the line or the heating element via the valve spindle, d ad characterized in that the second hollow valve closure piece (5) is double-acting and with its end (52) opposite the drain valve seat (33) through the first valve closure piece (4) in the direction of the housing valve seat (14), whereby on the valve on the z wide valve closure piece acting controller (9) can be used.

2. Heating valve according to claim 1, a d u rc h ge k e n n ze i c h n et that at the outer end of the rising in a valve upper part (2) Ven¬ valve spindle (3) a screw cap (8) is placed in Drehmitnah¬ meverbindung.

3. Heating valve according to claim 2, dadu rc h ge ken nzeichn et that at the outer, through the screw cap (8) protruding end of the valve spindle (3) has a receptacle (34) for a regulator, preferably a membrane regulator (9) is, which engages with an actuator (92) in the interior of the valve spindle (3) and against the spring-loaded second closure piece (5) acts

Heating valve according to claim 1, so that a pre-setting nut (10) is screwed onto an end-side external thread section (23) of the upper part (2) so as to be axially displaceable, which is in rotary driving connection with it there is a concentrically surrounding adjusting ring (10a) which engages with an external toothing in a corresponding inner toothing of a display ring (7) surrounding it concentrically and can be pushed out axially from this display ring to release the toothed connection.

Heating valve according to one or more of the preceding claims, characterized by the fact that the screw cap (8) covers the indicator ring (7).