Shaft slide ring seal arrangement

Abstract

A shaft slide ring seal arrangement including a shaft, which has a first and second end, and a slide ring seal, which includes a shaft slide ring connected non-rotatably to the shaft, the axial displaceability whereof is limited at least in the direction of the first end of the shaft by a limiting element, and a slide ring arrangement arranged at a radial distance from the shaft, which slide ring arrangement lies, at a side of the shaft slide ring pointing towards the second end of the shaft, axially adjacent thereto, as well as a retaining ring supported on the shaft, the axial displaceability whereof is limited at least in the direction of the second end of the shaft and which centers the slide ring arrangement, on its side facing away from the shaft slide ring, with respect to the shaft.

The invention claimed is: 
     
       1. A shaft slide ring seal arrangement, comprising
 a shaft, which has a first end and a second end, 
 a slide ring seal, which includes:
 a shaft slide ring connected non-rotatably to the shaft, an axial displaceability whereof is limited at least in a direction of the first end of the shaft by means of a limiting element, and 
 a slide ring arrangement arranged at a radial distance from the shaft, the slide ring arrangement lies, at a side of the shaft slide ring pointing towards the second end of the shaft, axially adjacent thereto, and 
 
 a retaining ring supported on the shaft, an axial displaceability whereof is limited at least in a direction of the second end of the shaft, the retaining ring centers the slide ring arrangement, on its side facing away from the shaft slide ring, with respect to the shaft. 
 
     
     
       2. The shaft slide ring seal arrangement according to  claim 1 , wherein the retaining ring has a face pointing towards the slide ring arrangement and descending towards the shaft longitudinal axis. 
     
     
       3. The shaft slide ring seal arrangement according to  claim 1 , wherein the slide ring arrangement includes a slide ring and a slide ring holder, wherein the slide ring holder is connecting non-rotatably to the slide ring and the shaft slide ring is mounted axially spring-loaded with respect to the limiting element. 
     
     
       4. The shaft slide ring seal arrangement according to  claim 1 , wherein the retaining ring axially pretensions the slide ring seal. 
     
     
       5. The shaft slide ring seal arrangement according to  claim 4 , wherein the slide ring seal is displaceable relative to the limiting element by release of the retaining ring, in order to be able to increase the pretensioning further. 
     
     
       6. The shaft slide ring seal arrangement according to  claim 1 , wherein the slide ring arrangement is held in its position centered on the retaining ring by means of a retaining element. 
     
     
       7. A drivetrain section comprising:
 a drive shaft, 
 a shaft slide ring seal arrangement comprising
 a shaft, which has a first end and a second end, 
 a slide ring seal, which includes:
 a shaft slide ring connected non-rotatably to the shaft, an axial displaceability whereof is limited at least in a direction of the first end of the shaft by means of a limiting element, and 
 a slide ring arrangement arranged at a radial distance from the shaft, the slide ring arrangement lies, at a side of the shaft slide ring pointing towards the second end of the shaft, axially adjacent thereto, 
 
 a retaining ring supported on the shaft, an axial displaceability whereof is limited at least in a direction of the second end of the shaft, the retaining ring centers the slide ring arrangement, on its side facing away from the shaft slide ring, with respect to the shaft, and 
 a receiving device surrounding the shaft slide ring seal arrangement in a fixed manner, wherein the receiving device is concentric with respect to the drive shaft and receives the slide ring arrangement non-rotatably, and wherein the receiving device is arranged at a fixed axial distance from the drive shaft. 
 
 
     
     
       8. The drivetrain section according to  claim 7 , wherein the receiving device and the drive shaft limit an axial displacement of the slide ring seal away from the limiting element. 
     
     
       9. The drivetrain section according to  claim 7 , wherein a radial opening in the shaft and a radial opening in the drive shaft do not become aligned with one another until a predetermined operational pretensioning of the slide ring seal is reached. 
     
     
       10. An eccentric screw pump with a shaft slide ring seal arrangement including:
 a shaft, which has a first end and a second end, 
 a slide ring seal, which includes:
 a shaft slide ring connected non-rotatably to the shaft, an axial displaceability whereof is limited at least in a direction of the first end of the shaft by means of a limiting element, and 
 a slide ring arrangement arranged at a radial distance from the shaft, the slide ring arrangement lies, at a side of the shaft slide ring pointing towards the second end of the shaft, axially adjacent thereto, and 
 
 a retaining ring supported on the shaft, an axial displaceability whereof is limited at least in a direction of the second end of the shaft, the retaining ring centers the slide ring arrangement, on its side facing away from the shaft slide ring, with respect to the shaft. 
 
     
     
       11. The shaft slide ring seal arrangement according to  claim 2 , wherein the slide ring arrangement includes a slide ring and a slide ring holder, wherein the slide ring holder is connecting non-rotatably to the slide ring and the shaft slide ring is mounted axially spring-loaded with respect to the limiting element. 
     
     
       12. The shaft slide ring seal arrangement according to  claim 2 , wherein the retaining ring axially pretensions the slide ring seal. 
     
     
       13. The shaft slide ring seal arrangement according to  claim 2 , wherein the slide ring arrangement is held in its position centered on the retaining ring by means of a retaining element. 
     
     
       14. The drivetrain section according to  claim 8 , wherein a radial opening in the shaft and a radial opening in the drive shaft do not become aligned with one another until a predetermined operational pretensioning of the slide ring seal is reached.