DE3520180A1 - Double-acting seal with an adjusting ring - Google Patents

Abstract

To seal off rotating shafts with large alignment errors and/or deflexions, both shaft passages are sealed off symmetrically to the axis of the shaft in the seal housing (9). On the one hand, the shaft is sealed off with respect to the pressure and/or product side in such a way that there is a rolling thrust bearing (7) between the shaft sleeve (5) and the adjusting ring with its spherical sealing and adjusting surface (8) and the sealing gap between the shaft sleeve (5) and the adjusting ring (8) is sealed off with spring-assisted sealing elements (6) and/or O-rings. The spherical sealing and adjusting surface of the adjusting ring (8) is fitted into the seal housing (9) and sealed off with O-rings (10) and/or spring-assisted sealing elements and/or sealing surfaces (11). The opposite shaft passage in the seal housing (9) is sealed off in the same way, symmetrically with respect to the axis of the shaft, with a shaft sleeve (4), a rolling thrust bearing (3), an adjusting ring (1) and sealing elements (2, 10, 11). <IMAGE>

Description

Ralf Seibert Am Hensberg 4

5802 Weather 2

Description:

Seal with adjustment ring - double-acting

This seal is a further development of the seal with adjusting ring for sealing rotating shafts with large Misalignments and deflections from the Ο5 · Ο7 · 1984 Role number: G 84 10 759-6

This invention is based on the idea to improve the above-mentioned seal so that at large temperature and / or Pressure differences as well as the greatest possible operational safety can be achieved in the case of dangerous operating materials.

This object was achieved according to the invention in such a way that both shaft passages in the seal housing (9) are symmetrical to the shaft axis are sealed.

On the one hand, the shaft is sealed to the pressure and / or product side in such a way that between the shaft sleeve (5) and the setting ring (θ) an axial roller bearing (7) and the sealing gap between the shaft sleeve (5) and adjusting ring (θ) with spring-assisted sealing elements (6) and / or O-rings is sealed. The spherical sealing and adjustment surface of the adjustment ring (8) is fitted into the seal housing (9) and with O-rings (1O) and / or spring-assisted sealing elements and / or sealing surfaces

0 (11) sealed.

The opposite shaft passage in the seal housing (9) is now symmetrical to the shaft axis with the shaft sleeve (4), thrust roller bearing (3), adjusting ring (1) and sealing elements (2,10) are sealed.

5 This opposite shaft passage in the seal housing (9), can be on the atmosphere side, but also on another pressure and / or product side.

This allows the seal to be provided with a cooling or thermal connection at high or low temperatures.

0 The seal can now also be provided with a barrier pressure connection, ao that possible small leakages are prevented.

Another gate part of this seal is in use at the highest To press.

If, for example, the differential pressure to be sealed to the atmospheric side 800 bar, the seal is only approved up to 500 bar is, the use of this seal is no longer possible, unless the seal would be with a barrier pressure of 400 bar pressurize so that the differential pressure to be sealed is now reduced to 400 bar and the use of this seal again 0 is allowed.

The radial bearing (12) can be in the seal housing (9) as a loose or Plague camps are built. If necessary, the radial bearing (12) can also be omitted, but installation in the seal housing is recommended in order to achieve slight oblique positions in the seal Get A 5.

The shaft is sealed in the shaft sleeves (4 »5) by pressing the shaft sleeves (4 * 5) together with the one in between Press seal (13) reached.

This pinch seal (13) also serves to transmit torque. For additional safety shaft sleeves (4 "5) be ^a wave uf shrunk.

Naming the positions;

1. Adjustment ring with spherical sealing surface

2. Spring-assisted sealing element

3 Axial roller bearings (e.g. needle roller bearings, cylindrical roller bearings) 4 · shaft sleeve 5 · shaft sleeve

6. spring-loaded sealing element

7. Axial rolling bearings

8. Sin adjusting ring with spherical sealing surface

9. Seal housing

10. O-ring

11. Sealing surface

12. Radial roller bearings (e.g. spherical roller bearings, barrel bearings) 13 Press seal

Claims (3)

Ralf Seibert Am Hensberg 4 5802 Wetter 2 Claims: Seal with adjusting ring - double-acting 1. Seal with adjusting ring - double-acting, characterized in that both shaft passages in the seal, are sealed symmetrically to the shaft axis and consist of two setting rings with spherical sealing and setting surfaces (1 and 8), .5 one or two shaft sleeves (4 and 5) and two axial bearings (5 and 7) is constructed. 2. Seal with adjusting ring according to claim 1, characterized in that an axial bearing (3 and 7) is installed between the shaft sleeve (s) (4 and 5) and setting rings (1 and 8) and in the sealing gaps between the shaft sleeve (s) (4 and 5) and setting rings (1 and 8) one or more spring-supported_ Sealing elements (2 and 6) and / or O-rings are installed. 3. Seal with adjusting ring according to claim 1, characterized in that both setting rings with spherical 5 sealing and setting surfaces (1 and 8) in the seal housing (9) are fitted and with one or more 0-rings (1O) and / or spring-assisted sealing elements and / or sealing surfaces are sealed.