DE20213608U1 - Valve, comprising valve insert to be removed and inserted in a single piece while simultaneously blocking water inlet - Google Patents

Abstract

The valve is assembled of a housing (9) and a valve insert (3) comprising a main body (4), a spindle (43), a closing element (35a) with a matching seat and openings (19) for the water to flow through. For assembly the closing element (35a) is pushed onto the lower end of the spindle (43) provided with an outer thread and secured with a hexagonal nut (13). The unit is inserted into the valve insert (3) which is inserted into the housing (9) in a second step and fastened with a locking device. A spring (27) supported zero-flow ring (17) prevents the fluid from entering and leaving the housing (9) during this operation.

Description

Applicant:
WA Holding AG
Wabergstrasse 7
CH-8624 Grüt

DR-ING-KARL BOEHMERT. PA(ISW-ITO)
DIPL.-INO. ALBERT BOEHMERT, Pa (ITO-I'WJ)
WILHELM JH STAHLBERG, Attorney at Law Bremen
DR-ING. WALTER HOORMANN, PA·. Bremen
DIPL-PHYS. DR. HEINZ GODDAR. PA-, Mönchen
DR-ING. ROLAND LIESEGANG, PA·, Munich

WOLF-DIETER KUNTZE RA. Bremen. Aliomte

DIPL.-PHYS. ROBERT MÜNZHUBER. PA (19J)-ITO)

DR. LUDWIG KOUKER, RA. Bremer.

DR. (CHEM.) ANDREAS WINKLER, PA·, Bremen

MICHAELA HUTH-DIERIG. RA. Some

DIPL-PHYS. DR. MARJON TÖNHARDT. Pa-. Ditaeldori

DR. ANDREAS EBERT-WEIDENFELLER. Attorney, Bremen

DlPL-IMG EVA LIESEGANG. PA·, Munich

DR. AXEL NORDEMANN, RA. Berlin

DIPL-PHYS. DR. DOROTHEE WEBER-BRULS, PA·.Frankfurt

DIPL-PHYS. DR. STEFAN SCHOHE, PA·, Manchen

DR-ING. MATTHIAS PHILIPP. PA·. Breleeld

DR. MARTIW WIRTZ, RA, Dumklorf

DR. DETMAR SCHAFER, RA, Bremen

DR. JAN BERND NORDEMANN, LL M., RA. Berl.n

PA - Pulenurnwull/Putent Attorney

RA - ReclUsanwall/Attomey at Uw

• - European Patent Atomev

" - Brandenburg, approved by OLG Brandenburg

° - Mayor of Law

All due respect to the European Conference of Ministers Alic»

PidI^miotuI RejircMnluion U Uli Comnwtirty Trxknurli OllVe. Alicar

PROF. DR. WILHELM NORDEMANN. RA. BRB-DIPL-PHYS. EDUARD BAUMANN. PA·. Hcihentirchen DR-ING. GERALD KLOPSCH, PA·. Düsaeldorl

DIPL-ING. HANS W. GROENING. PA-. Munich

DIPL.-ING. SIEGFRIED SCHIRMER. PA·. Bieleield DlPL-PHYS. LORENZ HANEW1NKEL. &rgr;&lgr;·, PjJerhoni DIPL.-ING. DR. JAN TONNIES, PA. RA K.el DIPL-PHYS. CHRISTIAN BIEHL. PA-. Kiel DIPL.-PHYS. DR-ING. UWE MANASSE.Pa-,liremu, DR. CHRISTIAN CZYCHOWSKI, RA. Berim DR CARL-RICHARD HAARMANN. Ra. Munich DIPL.-PHYS. DR. THOMAS L. BITTNER, PA-. Berlin DR. VOLKER SCHMITZ. RA, Munich DIPL.-PHYS. CHRISTIAN W. APPELT. PA·, Munich DR. ANKE NORDEMANN-SCHIFFEL. Ra-. PoiMtai KERSTIN MAUCH, LLM., RA,Potsdam

DlPL-BIOL. DR. JAN B. KRAUSS, PA. Munich

JÜRGEN ALBRECHT, LAWYER, Munich

ANKE SIEBOLD. Attorney, Bremen

DR. KLAUS TIM BROCKER, LAWYER Berlin

DR. ANDREAS DUSTMANN. LLM.. RA. Poudam DIPL.-ING. NILS T. F. SCHMID, PA. Manchen

[n Zusunimenurbeil mu/in cooperation with

DlPL-CHEM. DR. HANS ULRJCH MAY &Rgr;&Lgr;·, Munich

28.08.2002
2805/299-2

Valve with a valve insert for regulating the flow rate with an associated adapter

The invention relates to a valve with a valve insert for regulating the flow rate from at least one inlet to at least one outlet, with at least one closing body arranged in the valve and at least one seat element, which cooperate to open and close the valve, as well as an associated adapter.

Two- and three-way valves are mainly used in heating, ventilation and air conditioning technology. The two-way valves are used in the "normally open" or "normally closed" version and the three-way valves in the "mixing valve" or "distribution valve" version.

Conventional control valves are predominantly designed as globe valves, which essentially consist of a valve housing, a cone with a spindle and a

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http://www.boehmen.de e-mail: postmaster@boehmert..de

BOEHMERT & BOEHMERT

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stuffing box or a bellows. When manufacturing such a valve, the cone and the spindle are first connected to each other and installed in the valve housing. The stuffing box is pushed over the spindle and screwed into the valve housing.
5

The disadvantage of such valves is that in the event of a malfunction, e.g. due to leaks or incorrect dimensioning of the components, the components are difficult to replace, it may be that only individual parts need to be replaced and therefore considerable effort is required to store the components. Another disadvantage is that all lines connected to the valve must be shut off and/or drained in order to replace the components.

The invention is therefore based on the object of creating a valve in which the components can be easily replaced. A further object is to be able to replace components without having to shut off and/or empty all the lines that are connected to the valve.

This object is achieved according to the invention by the features of claims 1, 5, 19 and claim 23.

Advantageous developments of the invention are shown in the subclaims.

The invention is explained below using various embodiments with reference to a drawing.

Fig. 1 is a cross-sectional view of a two-way valve version “normally closed”;
Fig. la is a cross-sectional view of the valve insert used in Fig. 1;

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Fig. Ib is a cross-sectional view of two closing bodies and a spindle connectable thereto;

Fig. 2 a cross-sectional view of another two-way valve version "normally open";

Fig. 2a is a cross-sectional view of the valve insert used in Fig. 2;

Fig. 2b is a cross-sectional view of two closing bodies and a spindle connectable thereto;

Fig. 3 is a cross-sectional view of a three-way valve version "distribution valve";

Fig. 3a is a cross-sectional view of the valve insert used in Fig. 3; 15

Fig. 3b is a cross-sectional view of two closing bodies and a spacer tube as well as a spindle connectable to them;

Fig. 4 Cross-sectional view of another three-way valve version "mixing valve"; 20

Fig. 4a is a cross-sectional view of the valve insert used in Fig. 4;

Fig. 4b is a cross-sectional view of two closing bodies and a spindle connectable thereto;
25

Fig. 5 is a cross-sectional view of a two-way valve with a receptacle for the valve insert;

Fig. 5a is a cross-sectional view of the two-way valve of Fig. 5 with the adapter attached;

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Fig. 5b is a cross-sectional view of the two-way valve of Fig. 5 with attached
Adapter and cartridge removed from the two-way valve;

Fig. 5c is a cross-sectional view of the two-way valve of Fig. 5 with attached,
closed adapter and cartridge removed from the two-way valve and

Fig. 5d is a cross-sectional view of the two-way valve of Fig. 5 with attached,
closed adapter and valve insert that can be removed from the adapter.

A valve 1 according to the invention in Fig. 1 is flowed through by a fluid which is supplied from an inlet 5 and discharged from an outlet 7. The valve 1 is opened and closed by a parabolic cone with a normal seat 35a being displaced against a seat ring with a normal seat 15a by a spindle 43 to which a cone is firmly connected. If the parabolic cone is in sealing contact with the seat ring, the valve is closed. If the parabolic cone is removed from the seat ring by the spindle, the valve opens and the flow rate flowing through the valve can be regulated.

According to the invention, the valve 1 comprises a housing 9 and a valve insert 3 which can be fastened in the housing 9. The valve insert comprises a body 4, a spindle 43, a closing body 35a, a seat element 15a and flow openings 19, so that the spindle can move the closing body relative to the seat element in order to open the flow openings for the fluid flowing through the valve insert.

According to Fig. Ib, either a parabolic cone with a normal seat 35a or a parabolic cone with a retracted seat 35b is pushed onto the lower end of the spindle 43 in Fig. Ib. A hexagon nut 13 is screwed onto the thread 43a of the spindle 43 in order to secure the parabolic cone. The

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Spindle 43 with the parabolic cone 35a, 35b and the associated seat ring 15a, 15b is inserted into the valve insert 3 shown in Fig. la.

The valve insert 3 in Fig. 1a consists of a body 4 in which flow openings 19 for the fluid are arranged. The body 4 also has a central bore in its longitudinal direction into which the spindle 43 is inserted. In order to prevent the fluid from escaping through the body 4 along the spindle 43 to the outside, zero ring seals 23 are arranged in the body. The spindle can be moved manually or, as in the present case, by a motor. If the motor fails due to a malfunction, it is desirable for the valve to move into the open or closed position. For this reason, a spring 27 is arranged between a lower spring plate 25 and an upper spring plate 29 and secured by a locking ring 31. If the motor fails, the spring 27 exerts a force on the spindle 43 so that the spindle and the parabolic cone associated with it move into a position in which the valve is open or closed.

In the present embodiment, the parabolic cone 35a is located behind the seat ring 15a in the direction of flow. If the spring 27 is designed as a compression spring and the motor for moving the spindle 43 fails, the parabolic cone is pressed against the seat ring by the compression spring. The valve is thus closed.

The valve insert 3 configured in this way is inserted into the housing 9 and secured by means of a releasable snap lock (not shown). In order to prevent the fluid in the inlet 5 from flowing outside the body 4 into the outlet 7, a zero ring 17 is arranged in the housing 9.

If an incorrect component, e.g. an incorrect spindle or an incorrect parabolic cone, has been installed in the valve insert 3, this error can now be quickly remedied by releasing the unlockable snap lock and removing the valve insert without disassembling it. A valve insert with the correct components can then be installed in

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the housing 9 and secured by means of the unlockable snap lock.

The valve insert 3 is preferably designed for different valve sizes, e.g. by means of a body 4 that is uniform for the different valve sizes. The valve insert can thus be fitted into different valve sizes with the same "internal workings", such as spindle and cone.

Furthermore, the valve insert can be equipped with different spindles or cones in order to be able to use it in valves with different functions, for example in a three-way valve for mixing or distribution use.

The valve shown in Fig. 2, 2a and 2b differs from the valve shown in Fig. 1, la and 1b in that the direction of flow of the fluid and the arrangement of the parabolic cone have changed. If, in such an arrangement, the motor for moving the spindle 43 fails and the spring 27 is designed as a compression spring, the parabolic cone is removed from the seat ring by the force of the compression spring. Accordingly, the valve is opened in the event of a fault in the motor, in contrast to the embodiment shown in Fig. 1, la and 1b.

Fig. 3, 3a and 3b show a further embodiment of a three-way valve in a distributor insert: An inlet 5 is divided into two outlets 7.
25

As can be seen in Fig. 3b, for this purpose either a parabolic cone with a normal seat 35a, a spacer tube 37 and a lantern cone with a normal seat 33a or a parabolic cone with a retracted seat 35b, a spacer tube 37 and a lantern cone with a retracted seat 33b are placed on a spindle 39. A hexagonal

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Nut 13 is screwed onto a thread 39a of the spindle 39 in order to fasten the components placed on the spindle.

The spindle configured in this way is inserted with the corresponding seat ring 15a, 15b into the valve insert 3 shown in Fig. 3a. The valve insert 3 shown in Fig. 3a is identical in construction to the valve inserts shown in Figs. 1a and 2a.

The valve insert configured in this way is inserted into the housing 9 of the three-way valve. The parabolic cone 35a is arranged between the inlet 5 and a first outlet 7' and the lantern cone 33 is arranged between the inlet and a second outlet 7". In the position shown in Fig. 3, the parabolic cone with normal seat 35a allows flow from the inlet 5 into the first outlet 7', while flow from the inlet 5 to the second outlet 7" is prevented by the lantern cone 33.

In a further embodiment in Figs. 4, 4a and 4b, a three-way valve is again shown, but in a mixing insert: two inlets 5 are fed to an outlet 7 via the valve.

As can be seen in Fig. 4b, either a cone with a normal seat 11a or a cone with a retracted seat 11b is placed on a spindle 2. A hexagon nut 13 is screwed onto a thread 21a in order to secure the cone.

The spindle configured in this way is inserted with the corresponding seat ring 15a, 15b into the valve insert 3 shown in Fig. 4a. The valve insert shown in Fig. 4a is identical to the valve inserts shown in Figs. 1a, 2a and 3a.

The valve insert configured in this way is then inserted into the housing 9 of the three-way valve. In the position shown in Fig. 4, a flow is provided from the first inlet

♦ ··

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inlet 5', to the outlet 7 is prevented by the cone and from the second inlet 5", to the outlet 7 is enabled. If the cone is moved by the spindle 21 from this position in the direction of the second inlet 5", the inlets 5', and 5", deliver a portion to the outlet 7 that can be adjusted by the spindle 21 and the cone 11.

In an advantageous embodiment, the valve insert is surrounded by a sealing sleeve 41. The valve insert 3 can be screwed into the sealing sleeve 41 and the components connected in this way can be screwed into the housing 9 of a valve. The sealing sleeve has flow openings 19 which correspond to those of the valve insert 3 and the valve (or the lines connected to the valve) when the valve insert is firmly screwed into the sealing sleeve. If the valve insert has to be replaced in a valve, the sealing sleeve 41 in the housing 9 is first rotated into a position in which the sealing sleeve 41 closes the lines connected to the valve 1. The valve insert 3 is then unscrewed from the sealing sleeve 41 and replaced with a new valve insert. The new valve insert 3 is screwed firmly into the sealing sleeve 41. Now the sealing sleeve 41 with the new valve insert 3 can be screwed back into its previous position, whereby the lines connected to the valve are released through the sealing sleeve or the flow openings of the sealing sleeve. The valve is then ready for use again without having to shut off and/or empty the lines connected to the valve.

In a further embodiment in Fig. 5, a receptacle 49, which in this case is made in one piece from steel, is screwed onto the valve insert 3, with a screw 51 additionally connecting the receptacle 49 to the valve insert 3 in order to prevent the two elements from twisting against each other. An adapter 45 is slipped over the receptacle 49 and screwed onto the valve 1, as shown in Figure 5 a. The receptacle 49 extends through the adapter 45, but no gas or liquid can escape from the adapter along the

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receptacle can escape from the adapter, since this is prevented by zero ring seals 23, and comprises a closing body 47. After the adapter 45 is sealed to the valve 1, the valve insert 3 is rotated out of the valve 1 by means of the receptacle 45 and moved away from the valve 1, as shown in Figure 5b. In this way, the adapter 45 is filled with the gases or liquids flowing in the lines connected to the valve 1. Subsequently, as shown in Figure 5c, the closing body 47 is moved to divide the adapter into two sections which are sealed from one another so that no exchange of gas or liquid from one section to the other is possible.

The adapter 45 can now be opened, in this case by means of a cover 53, and the holder 49 with the valve insert 3 can be removed from it without gases or liquids escaping from the valve 1 or from the lines connected to the valve, since these are held back by the closing body 47. The removed valve insert 3 can now be repaired or replaced and is reconnected to the holder 49 and inserted into the adapter 45, which is then closed, in this case by means of the cover 53. The closing body 47 is then moved back to its original position and the valve insert 3 can be screwed into the valve 1 by means of the holder 49, whereby the valve is tightly closed. The adapter 45 can therefore be removed from the valve 1, whereby only the residual liquid in the adapter has to be disposed of. In this way, the valve insert can be removed from the valve and replaced without the lines connected to the valve having to be shut off.

- List of reference symbols -

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List of reference symbols:

1 Valve 3 Valve insert 4 Body 5 Intake 5' first inflow 5" second inlet 7 Sequence T first process &Iacgr;" second process 9 Housing 11 cone 11a Cone with standard seat 11b Cone with retracted seat 13 Hexagon nut 15 Seat ring 15a Seat ring with standard seat 15b Seat ring with retracted seat 17 Zero ring 19 Flow opening 21 spindle 21a Thread of spindle 21 23 Zero ring seal 25 lower spring plate 27 Feather 29 upper spring plate 31 Retaining ring 33 Lantern cone

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33a Latemen cone with normal seat

33b Lantern cone with retracted seat

35 Parabolic cones

35a Parabolic cone with standard seat

35b Parabolic cone with retracted seat

37 Spacer tube

39 spindle

39a Thread of the spindle

41 Sealing sleeve

43 spindle

43 a Thread of the spindle

45 adapters

46 locking bodies

49 Holder for the valve insert

50 Screw 53 Cover

- Protection claims -

Claims (27)

1. Valve for regulating the flow rate from at least one inlet to at least one outlet, with at least one closing body ( 11 , 11a , 11b ; 33 ; 35 , 35a , 35b ) arranged in the valve and at least one seat element ( 15 , 15a , 15b ), which cooperate to open and close the valve, characterized in that the at least one closing body is assigned to a valve insert which is arranged interchangeably in the valve. 2. Valve according to claim 1, characterized in that the valve insert ( 3 ) can be removed from the valve without being dismantled and can be replaced. 3. Valve according to claim 1 or 2, characterized in that the valve insert ( 3 ) and the valve ( 1 ) are provided with a thread so that the valve insert can be screwed into the valve. 4. Valve according to one of claims 1 to 3, characterized in that the valve insert ( 3 ) closes the inlets ( 5 , 5 ', 5 ") and outlets ( 7 , 7 ', 7 ") attached to the valve when removed from the valve ( 1 ) in order to prevent the inlets and outlets from being shut off and emptied. 5. Valve insert with a body ( 4 ), a spindle ( 21 , 39 , 43 ) and at least one closing body ( 11 , 11 a, 11 b; 33 ; 35 , 35 a, 35 b), so that the movable parts of the valve are easily replaceable and the closing body(s) is (are) movable by the spindle relative to one or more seat elements in order to release the valve insert for a fluid flowing through it along a flow direction. 6. Valve insert according to claim 5, characterized in that the valve insert has at least one seat element ( 15 , 15a , 15b ). 7. Valve insert according to claim 5 or 6, characterized in that the valve insert has at least one flow opening ( 19 ). 8. Valve insert according to one of claims 5 to 7, characterized in that the closing body ( 11 , 11a , 11b ; 33 ; 35 , 35a , 35b ) is arranged in the flow direction in front of the seat element ( 15 , 15a , 15b ). 9. Valve insert according to one of claims 5 to 8, characterized in that the closing body ( 11 , 11a , 11b ; 33 ; 35 , 35a , 35b ) is arranged behind the seat element ( 15 , 15a , 15b ) in the flow direction. 10. Valve insert according to one of claims 5 to 9, characterized in that the spindle ( 21 , 39 , 43 ) is movable by a motor. 11. Valve insert according to one of claims 5 to 10, characterized in that the spindle ( 21 , 39 , 43 ) is manually movable. 12. Valve insert according to claim 10, characterized in that the spindle ( 21 , 39 , 43 ) in the valve insert ( 3 ) is assigned a spring ( 27 ), in particular with an upper spring plate ( 29 ) and a lower spring plate ( 25 ), in order to move the valve into an open or closed position in the event of an engine fault. 13. Valve insert according to one of claims 5 to 12, characterized in that seals, in particular zero ring seals ( 23 ), are arranged around the spindle ( 21 , 39 , 43 ) in the valve insert ( 3 ). 14. Valve insert according to one of claims 5 to 13, characterized in that the valve insert ( 3 ) can be inserted into a two-way valve. 15. Valve insert according to one of claims 5 to 14, characterized in that the valve insert ( 3 ) can be inserted into a three-way valve. 16. Valve insert according to one of claims 5 to 15, characterized in that the valve insert ( 3 ) has a closing body ( 11 , 11 a, 11 b; 33 ; 35 , 35 a, 35 b) interacting with a seat element ( 5 , 15 a, 15 b). 17. Valve insert according to claim 15 or 16, characterized in that the valve insert has, in addition to a closing body ( 11 , 11 a, 11 b; 33 ; 35 , 35 a, 35 b) cooperating with a seat element ( 15 , 15 a, 15 b), an additional closing body ( 11 , 11 a, 11 b; 33 , 35 , 35 a, 35 b), in particular spaced apart by a spacer tube ( 37 ). 18. Valve insert according to one of the preceding claims 5 to 17, characterized in that the valve insert ( 3 ) can be used in different valve sizes. 19. Valve with a valve insert arranged therein, wherein the valve insert ( 3 ) is at least partially surrounded by a sealing sleeve ( 41 ) into which the valve insert ( 3 ) can be inserted and which can be inserted in the valve ( 1 ), the sealing sleeve further has through-flow openings ( 19 ) and is movable in the valve between a first position and a second position, wherein the through-flow openings ( 19 ) of the sealing sleeve ( 41 ) in the first position do not close the lines connected to the valve and in the second position the sealing sleeve ( 41 ) closes at least some of the lines connected to the valve, so that in order to remove the valve insert ( 3 ) from the valve in operation, the sealing sleeve ( 41 ) is first moved from the first position to the second position in order to close at least some of the lines connected to the valve, then the valve insert ( 3 ) is removed from the sealing sleeve ( 41 ), possibly replaced, a The valve insert is inserted into the sealing sleeve and the sealing sleeve is moved from the second position to the first position in order to open the lines which are closed by the sealing sleeve and which engage the valve. 20. Valve according to claim 19, characterized in that the sealing sleeve ( 41 ) closes all lines ( 5 , 7 ) connected to the valve ( 1 ). 21. Valve according to claim 19 or 20, characterized in that the sealing sleeve ( 41 ) is movable from the first position into the second position by a rotary movement. 22. Valve according to one of claims 19 to 21, characterized in that the valve insert ( 3 ) can be screwed into the sealing sleeve ( 41 ) and/or the sealing sleeve ( 41 ) can be screwed into the valve. 23. Adapter for replacing a valve insert ( 3 ) arranged in a valve ( 1 ), which can be sealingly connected to the valve ( 1 ) and which comprises a receptacle ( 49 ) for the valve insert ( 3 ) which can be moved between a first position in which the valve insert ( 3 ) is fixedly arranged in the valve ( 1 ) and a second position in which the valve insert ( 3 ) is released from the valve ( 1 ), and the adapter ( 45 ) further comprises a closing body ( 46 ) by means of which the adapter ( 45 ), when the receptacle ( 49 ) with the valve insert ( 3 ) is in the second position, can be divided into two sections in such a way that these are sealed against one another, so that the adapter ( 45 ) can be connected to the valve ( 1 ) and the receptacle ( 49 ) can be connected to the valve insert ( 3 ), which The valve insert ( 3 ) can be removed from the adapter ( 45 ) with the aid of the holder ( 49 ), exchanged and reinserted into the valve ( 1 ), wherein an outflow from the lines engaging the valve ( 1 ) can be prevented during the exchange process of the valve insert ( 3 ) by inserting a closing body ( 47 ) into the adapter ( 45 ). 24. Adapter according to claim 23, characterized in that the adapter ( 45 ) can be connected to the valve ( 1 ) when the receptacle ( 49 ) is connected to the valve insert ( 3 ). 25. Adapter according to claim 23, characterized in that the receptacle ( 49 ) can be connected to the valve insert ( 3 ) when the adapter ( 45 ) is connected to the valve ( 3 ). 26. Adapter according to one of the preceding claims, characterized in that the adapter ( 45 ) can be connected to different valve sizes. 27. Adapter according to one of the preceding claims, characterized in that the adapter can be connected to two- and/or three-way valves.