Non-Return Device Suitable for Crude Gas Lines of Filtering Separators

Abstract

A non-return device, for example, for a crude gas line, comprises a housing, a seat, arranged in the housing, and a flap that is pivotably attached in the housing and rests on the seat in a closed state of the non-return device and is lifted off of the seat in an open state of the non-return device. The flap comprises at least one flexible connecting element on the housing, with a first end region of the connecting element being attached to the housing and with a second end region of the connecting element being attached to the flap.

Claims

1. A non-return device for a crude gas line, comprising: a housing; a seat arranged in the housing; a flap pivotably attached in the housing, the flap resting on the seat in a closed state of the non-return device and being lifted off of the seat in an open state of the non-return device; and at least one flexible connecting element having a first end region attached to the housing and a second end region attached to the flap.

2. The non-return device of claim 1, wherein a length of a section of the at least one flexible connecting element between the housing and the flap is adjustable.

3. The non-return device of claim 2, wherein the at least one flexible connecting element comprises an external thread on the first end region.

4. The non-return device of claim 3, wherein the first end region of the at least one flexible connecting element extends through a through bore of the housing, the non-return device further comprising a nut screwed onto a section of the first end region that projects from the housing.

5. The non-return device of claim 4, wherein, the length of the section of the at least one flexible connecting element between the housing and the flap is adjustable by rotating the nut.

6. The non-return device of claim 1, further comprising a support element on which the at least one flexible connecting element is supported at least in the closed state of the non-return device.

7. The non-return device of claim 6, wherein a position of a support location at which the at least one flexible connecting element is supported on the support element is adjustable.

8. The non-return device of claim 6, wherein the support element comprises a region with an external thread.

9. The non-return device of claim 8, wherein the region of the support element with the external thread extends through a through bore of the housing, the non-return device further comprising a nut screwed on a section of the region of the support element that projects from the housing and that has the external thread.

10. The non-return device of claim 9, wherein the position of the support location at which the at least one flexible connecting element is supported on the support element is adjustable by rotating the nut.

11. The non-return device of claim 6, wherein the support element is a bolt bent in a U-shaped manner and end regions of which have external threads, the at least one flexible connecting element being supported on a central region of the bolt.

12. The non-return device of claim 6, wherein the at least one flexible connecting element comprises two flexible connecting elements and two corresponding support elements.

13. The non-return device of claim 1, wherein the housing has on an inlet side a conical section, the diameter of which becomes larger from the inlet to a center of the housing.

14. The non-return device of claim 13, further comprising a socket that projects from the inlet into the conical section, a free end of the socket forming the seat.

15. The non-return device of claim 13, wherein through bores are provided in the conical section of the housing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features and advantages of the present invention will become apparent from the following description of a preferred exemplary embodiment with reference to the accompanying drawings.

[0022] FIG. 1 is a side view of a non-return device of the present invention;

[0023] FIG. 2 is a plan view of the non-return device;

[0024] FIG. 3 is a longitudinal section through the non-return device along the line in FIG. 2;

[0025] FIG. 4 is an enlarged cutout from FIG. 3;

[0026] FIG. 5 is a section along the line V-V in FIG. 3; and

[0027] FIG. 6 is a section along the line VI-VI in FIG. 3.

DETAILED DESCRIPTION

[0028] The inventive non-return device, depicted in the figures, comprises a housing 1 that has a shape like a barrel. The housing has an inlet-sided, conical section 11 (more specifically, having a frustoconical shape), a circularly cylindrical central section 12 and an outlet-sided, conical section 13 (more specifically, having a frustoconical shape).

[0029] Connected to the inlet of the housing, a socket 2 projects into the housing 1, as shown in FIGS. 3 and 5. The socket is cut off at an angle on the outlet side. This angularly cut end of the socket forms a seat 21 of the non-return device, against which seat a flap 3 of the non-return device abuts in the closed state of the non-return device, in which state the non-return device is shown in the figures.

[0030] The flap 3 is connected to the housing 1 by two flexible connecting elements 4. Each of the connecting elements 4 has a central flexible section, which is formed by a steel cable 41, but alternatively could be made of a different, suitably flexible material or flexible parts.

[0031] One of the connecting elements 4 is described in greater detail below. The other of the two connecting elements is designed in the same way.

[0032] The ends of the steel cable 41 are held in the sleeves 42, 43.

[0033] The sleeve 42 on a first end has an external thread. This external thread is passed through an additional sleeve 45 that is inserted into a recess in the inlet-sided, conical section 11 of the housing 1. The external thread can be displaced in the additional sleeve 45. Two nuts 44 are screwed on the external thread from outside of the housing 1, with one of the two nuts 44 being a lock nut.

[0034] The sleeve 43 on a second end of the steel cable 41 has a mushroom head 431. The second sleeve 43 is passed through a recess in the flap 3 and, in particular, such that the mushroom head 431 is arranged on the outlet side of the flap, while the other connecting element 4 is arranged on the inlet side of the flap.

[0035] The distance between the nuts 44 and the mushroom head 431 can be adjusted by adjusting the nut 44. At the same time this feature makes it possible to adjust the length of a section of the connecting element 4 between the housing 1 and the flap 3. In this way, an adjustment of the flap 3 from outside of the housing 1 is possible; in particular, it is possible to adjust the position that the flap has in the direction from the inlet to the outlet of the non-return device.

[0036] Each of the two connecting elements 4 is supported with its section, located between the housing 1 and the flap 3, on one support element 5 each.

[0037] One of the support elements 5 is described in more detail below. The other of the two support elements 5 is designed in the same way.

[0038] The support element 5 has a bolt 51 that is bent in a U-shaped manner and that has an external thread on each of its ends. These ends are passed through recesses in the inlet-sided, conical section 11 of the housing 1. Nuts 52 are screwed on the ends from the outside, so that the nuts can be used to adjust the extent to which the bolt 51 projects into the housing 1. This aspect makes it possible to adjust the support location, at which the connecting element 4 is supported on the bolt 5, from outside of the housing. At the same time this aspect can be used to adjust, in particular, the position and orientation of the flap 3 perpendicular to the direction of the inlet to the outlet of the non-return device.