Valve with an Alternating Seat System

Abstract

A valve with removable components is provided. The valve includes a housing in which a seat is arranged between a flow inlet and a flow outlet. A shut-off body displaceable by a displacing element is arranged to shut off flow through the seat. The shut-off body displacing element is surrounded at least partially by a guide sleeve which is connected to the seat in a manner which allows the seat to be removed with the guide sleeve, shut-off body and shut-off body displacing element.

Claims

1-8. (canceled)

9. A valve, comprising: a housing having a flow inlet and a flow outlet; a seat located in the housing; a shut-off body configured to be displaced relative to the seat to adjust a flow from the flow inlet to the flow outlet passing through the seat; a shut-off body displacing element configured to control displacement of the shut-off body relative to the seat; and a guide sleeve arranged in the housing to surround at least in part the shut-off body displacing element wherein the guide sleeve is configured to be connected to the seat in a manner which permits the seat to be removed from the housing with the guide sleeve when the guide sleeve is removed from the housing; the seat includes a recess configured to receive a sealing element configured to seal between the housing and an outer surface of the seat when the seat is in an installed position in the housing, the seat includes an undercut configured to receive the sealing element (7) in a releasable, positive locking connection, and the housing and the seat are configured such that when the seat is installed into the housing the sealing element conforms to a shape of a recess between the housing and the seat.

10. The valve as claimed in claim 9, wherein the guide sleeve includes a non-positive locking connection to the seat.

11. The valve as claimed in claim 10, wherein the non-positive locking connection is a threaded connection.

12. The valve as claimed in claim 9, further comprising an intermediate piece configured to cooperate with an end of the guide sleeve axially opposite an end of the guide sleeve adjacent to the shut-off body.

13. The valve as claimed in claim 12, wherein the intermediate piece is arranged at least in part outside the housing.

14. The valve as claimed in claim 13, wherein the guide sleeve is configured to engage the intermediate piece by positive locking.

15. The valve as claimed in claim 14, wherein the intermediate piece includes indentations configured to positively lock the guide sleeve with the intermediate piece.

16. The valve as claimed in claims 15, wherein the guide sleeve includes at least one opening configured to permit the flow to pass through the guide sleeve to the housing outlet.

17. The valve as claimed in claims 9, wherein the guide sleeve includes at least one opening configured to permit the flow to pass through the guide sleeve to the housing outlet.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 shows a sectional drawing through part of a valve in accordance with an embodiment of the present invention.

[0022] FIG. 2 shows an enlargement of a detail of a region of the valve seat in FIG. 1.

[0023] FIG. 3 shows an enlargement of a detail of a region of the FIG. 1 guide sleeve when interacting with the intermediate piece.

[0024] FIG. 4 shows a perspective representation of the FIG. 1 guide sleeve.

[0025] FIG. 5 shows a perspective representation of the FIG. 1 intermediate piece.

DETAILED DESCRIPTION

[0026] FIG. 1 shows a detail of a sectional representation of an valve which comprises a housing 1. The fluid flows through an inflow passage 2. A shut-off body 3 is displaced by a translational movement and unblocks a cross sectional flow area, through which the fluid flows and passes to an outflow passage. In this embodiment, the shut-off body 3 is realized in a cylindrical manner.

[0027] The translational movement of the shut-off body 3 is effected by a rod-like element 5 which is designed as a spindle in this embodiment. The element 5 communicates with an actuating drive, which is not shown in FIG. 1, and moves the element 5 up or down in the vertical direction. As an alternative to this, a hand wheel can also be used for actuation. In this embodiment, the shut-off body 3 comprises an opening in which the element 5 engages, there being a non-positive locking connection between the shut-off body 3 and the element 5. As an alternative to the variant shown, the shut-off body 3 and the element 5 can also be integrally formed such that the shut-off body 3 and the element 5 are realized in one piece.

[0028] A seat 6 is arranged in the housing 1. The seat 6 is realized in a ring-shaped manner and interacts with the shut-off body 3 in the closed position thereof. A sealing element 7 is arranged between the ring-shaped seat 6 and the housing 1. The sealing element 7 is realized in a ring-shaped manner. A sealing element 8 ensures the sealing between the shut-off body 3 and the seat 6 in the closed position.

[0029] The element 5, which moves the shut-off body 3, is surrounded by a guide sleeve 9. The guide sleeve 9 serves as a spacer sleeve and communicates with an intermediate piece 10. A sealing element 11 creates a seal between the housing 1 and the intermediate piece 10.

[0030] The intermediate piece 10 comprises an inner opening in which the element 5 is displaceably arranged. The intermediate piece 10 engages in an opening of a component 12, which is realized as a bracket in this embodiment. The intermediate piece 10 is surrounded by a nut 13 in its upper region. A disc 14 is arranged between the nut 13 and the component 12, which is realized as a bracket.

[0031] A screw 15 is arranged above the nut 13.

[0032] FIG. 2 shows an enlargement of a detail of a region of the valve seat. According to the invention, the guide sleeve 9 extends up to the seat 6 and comprises a connection to the ring-shaped seat 6. To this end, the guide sleeve 9 is provided in its lower region with an internal thread which engages in an external thread of the ring-shaped seat 6.

[0033] The ring-shaped seat 6 comprises a projection 16. The projection 16 extends along the circumference of the seat 6. In addition, the ring-shaped seat 6 comprises a recess 17 which extends as a groove along the circumference of the ring-shaped seat 6. As a result of said design, a positive locking connection is generated between the seat 6 and the sealing element 7, which is realized by the undercut.

[0034] When attaching the sealing element 7, the sealing element 7 is slid onto the ring-shaped seat 6. According to the invention, the sealing element 7 can be used without additional parts. The sealing element 7 is pressed into the relief by the screw 15. Other geometries of the relief are conceivable. The design according to the invention enables disassembly without additional parts. The shear force of the sealing element 7 is sufficient for this. In the non-pressed state, the sealing element 7 has a rectangular cross section and does not fill out the undercut. The sealing element 7 is not forced into a shape change until it is pressed over the seat 6.

[0035] FIG. 3 shows an enlarged detail of the upper region of the guide sleeve 9. According to the invention, the guide sleeve 9 comprises a connection to the intermediate piece 10. In this case, this is a positive locking connection. Tabs, which are pressed into indentations in the intermediate piece 10, are realized in the guide sleeve 9 in this embodiment. The intermediate piece 10 comprises, for this purpose, a recess 18 which extends as a groove in a ring-shaped manner along the circumference of the intermediate piece 10. In addition, the intermediate piece 10 comprises a projection 19 which extends in a ring-shaped manner along the circumference.

[0036] The positive locking connection between the guide sleeve 9 and the intermediate piece 10 is realized as a result of pressing webs. In combination with the non-positive locking connection between the guide sleeve 9 and the seat 6 and the positive locking connection between the seat 6 and the sealing element 7, the complete train is able to be pulled out of the housing 1 as a result of pulling on the intermediate piece 10.

[0037] The rotating of the alternating system is realized by the positive locking connection between the guide sleeve 9 and the intermediate piece 10. Installation is only possible in one orientation. Exchanging the alternating seat system is possible in the shortest time without the aid of the special tools. In contrast to conventional systems, parts are clamped in this case and the assembly is designed in a simpler and additionally non-confusable manner.

[0038] The connection between the guide sleeve 9 and the intermediate piece 10 makes it possible for the sealing element 7 to be inserted and the sealing element 7 to be removed. The connection is realized with anti-rotation protection.

[0039] FIG. 4 shows a perspective representation of the upper region of the guide sleeve 9. According to the invention the guide sleeve 9 comprises tabs.

[0040] FIG. 5 shows a perspective representation of the intermediate piece 10. The tabs of the guide sleeve 9 engage in indentations of the intermediate piece 10 such that a positive locking connection is generated.

[0041] In the case of an alternative variant of the invention which is not shown, the seat 6 and the guide sleeve 9 are realized integrally with one another.

[0042] In the case of another variant which is not shown, the seat 6, the guide sleeve 9 and the intermediate piece 10 are realized integrally with one another.

[0043] The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.