Valve housing with collared spindle guide

Abstract

A valve and method for producing a valve for regulating a fluid, the valve including a valve housing with a central part and two connection ends, the connection ends extending away from the central part. Internally of the central part, there is arranged a valve body with a through-going aperture that is arranged in a valve seat and connected to a valve spindle, the valve spindle being arranged in a spindle guide stub on the valve housing. The valve housing is made from a plastically deformed tubular item and includes a collared spindle guide stub with at least one projection, the projection or projections extending in continuation of the spindle guide stub. This projection can be used as a lock ensuring that the valve spindle is retained in its intended position, and at the same time, such projections can form stops at the extreme positions of the valve body.

Claims

1. A method for producing a valve for regulating a fluid, the valve including a valve housing with a central part and with two connection ends, the connection ends extending away from the central part, wherein internally of the central part there is arranged a valve body, with a through-going aperture, arranged in a valve seat and connected to a valve spindle, the valve spindle arranged in a spindle guide stub on the valve housing, wherein the spindle guide stub extends radially outwardly on the valve housing, and wherein the valve housing is at least partly constituted by a plastically deformed item, and wherein the method of producing the valve housing with the outwardly extending spindle guide stub at least includes the following steps: providing a tubular item; forming a cutout with an internal edge on the tubular item and at least one projection extending into the cutout; forming a collar by plastically deforming the cutout, whereby a spindle guide stub is formed by the deforming of the edge of the cutout giving the edge a shape in which the end of the spindle guide stub faces in a direction outwardly away from an interior space of the valve housing; and fixing the valve spindle in the spindle guide stub by means of the at least one projection at an end of the spindle guide stub being brought to resiliently engage in a groove on the valve spindle.

2. Method for producing a valve according to claim 1, wherein the tubular item is provided by deep drawing.

3. Method for producing a valve according to claim 1, wherein the tubular item is provided by shortening a prefabricated tube piece with the desired dimensions.

4. A method for producing a valve according to claim 1, wherein the valve spindle is mounted from the outer side of the valve housing and down through the collared spindle guide stub.

5. A method for producing a valve according claim 1, wherein the valve spindle is mounted from the inner side of the valve housing and up through the collared spindle guide stub.

6. A method for producing a valve according to claim 1, wherein the valve body in a valve housing is placed in open position after which the valve is finished by electroplating.

7. Method for producing a valve according to claim 1, wherein the tubular item is provided by a process where a plate piece is worked by deformation into having a generally tubular shape.

8. A valve for regulating a fluid, the valve including a valve housing with a central part and with two connection ends, the connection ends extending away from the central part, wherein a valve body is arranged internally of the central part with a through-going aperture, wherein the valve body is arranged in a valve seat and is connected to a valve spindle, the valve spindle being arranged in a spindle guide stub on the valve housing, and where the spindle guide stub extends radially outwardly on the valve housing, and wherein the valve housing is made from a plastically deformed tubular item and includes the spindle guide stub, wherein the spindle guide stub has a collar that includes at least one projection that extends in continuation of the spindle guide stub, wherein the spindle guide stub and the at least one projection extend in a direction away from the through-going aperture in the valve housing, and wherein the valve spindle is fixed in the spindle guide stub by the at least one projection at an end of the spindle guide stub being in engagement with a groove in the valve spindle.

9. Valve including a valve housing according to claim 8, wherein the valve housing includes an additional collared stub for mounting a sensor.

10. Valve including a valve housing according to claim 8, wherein the at least one projection includes at least one contact face arranged for contacting one or more corresponding contact faces at an operating handle for the valve.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a sectional view of a complete valve.

(2) FIG. 2 shows details of a valve spindle in a collared valve guide stub.

(3) FIG. 3 shows a collared valve guide stub with two projections.

(4) FIG. 4 shows a tube piece as seen in FIG. 3 with a cutout prior to collaring.

(5) FIG. 5 shows the cutout of FIG. 4 as seen from above.

(6) FIG. 6 shows a collared valve guide stub with a projection.

(7) FIG. 7 shows a tube piece as seen in FIG. 6 with a cutout prior to collaring.

(8) FIG. 8 shows the cutout of FIG. 7 as seen from above.

(9) FIG. 9 shows a collared valve guide stub with two projections.

(10) FIG. 10 shows a tube piece as seen in FIG. 9 with a cutout prior to collaring.

(11) FIG. 11 shows the cutout of FIG. 10 as seen from above.

DETAILED DESCRIPTION OF THE INVENTION

(12) In FIG. 1 appears a valve 1 with a valve housing 2 where the valve housing 2 has a central part 3 and two connection ends 4. The two connection ends 4 are here shown with a design adapted as so-called press-fittings. However, this is irrelevant to the invention and only an example of how these connection ends 4 can be made. In the central part 4 is arranged a valve body 5 with a through-going aperture 6, provided in a valve seat 7 which is sealed by two packings 8 at the inner side in the central part 3. From the valve body 5 which is here constituted by a traditional ball known from various ball valves a valve spindle 9 extends up through a spindle guide stub 10. By turning this valve spindle 9 about its longitudinal axis, the valve body 5 can be moved between an open position as shown and a closed position.

(13) FIG. 2 shows a detail of a valve 1. The detail shows in particular the valve spindle 9 arranged in a spindle guide stub 10 which includes two upwardly facing projections 12 at the end 11. These projections 12 are formed during collaring of the spindle guide stub 10, and here they serve the purpose of locking the valve spindle 9 at the intended position as the projections are brought to engage an annular recess 13 on the valve spindle. Contact faces 14 are provided at the sides of the projections 12, serving as abutments/stops against corresponding contact faces, either in the recess 13 or on a not shown handle. Such a handle can advantageously be mounted on the valve spindle 9 and brought to engage the side faces 15 at the end of the valve spindle.

(14) In the illustrated embodiment, the projections 12 are bent into the recess 13, which can be done after, or alternatively before, mounting the valve spindle 9. By forming the bend of the projections 12 before mounting the valve spindle 9, the projections 12 will act resiliently and thus “click” into position in the recess when the recess is opposite the projections.

(15) In FIG. 3, a tubular item 16 is shown that has a collared spindle guide stub 10 with two projections 12 on the surface forming the end 11 of the spindle guide stub 10. Here, the two projections 12 are designed with a rectangular shape and are arranged opposite each other.

(16) FIG. 4 shows the same tubular item 16 as seen in FIG. 3, but here the cutout 17 has been made in the tubular item 16 before collaring through.

(17) FIG. 5 shows the same tubular item 16 as in FIG. 4, but here seen directly from above where the cutout 17 with the two projections 12 facing each other and thus extending into the cutout 17 is clearly shown.

(18) In FIG. 6, a tubular item 16 is shown that has a collared spindle guide stub 10 with only one projection 12 on the surface forming the end 11 of the spindle guide stub 10. The only projection 12, in this case, is designed with a rectangular shape extending in the longitudinal direction of the spindle guide stub.

(19) FIG. 7 shows the same tubular item 16 as shown in FIG. 6, but here before collaring through the cutout 17 made in the tubular item 16.

(20) FIG. 8 shows the same tubular item 16 as in FIG. 7, but here seen directly from above where the cutout 17 with the one projection 12 extending into the cutout 17 is clearly shown.

(21) In FIG. 9, a tubular item 16 is shown that has a collared spindle guide stub 10 with two projections 12 on the surface forming the end 11 of the spindle guide stub 10. The two projections 12 are designed with a triangular shape and are arranged opposite each other.

(22) FIG. 10 shows the same tubular item 16 as seen in FIG. 9, but here before collaring through the cutout 17 made in the tubular item 16.

(23) FIG. 11 shows the same tubular item 16 as in FIG. 10, but here seen directly from above where the cutout 17 with the two triangular projections 12 facing each other and thus extending into the cutout are clearly shown.

(24) The invention is not limited to the above described embodiments and not to the embodiments shown in the drawings either, but may be supplemented and modified in any way according to the invention as will be apparent to those of ordinary skill in the art.