Vertical high speed testing device for spiral seal of cone bit bearing
US10429274B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2017 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vertical high-speed testing device for a spiral seal of a cone bit bearing is provided. The device includes an upper fixed plate, a liquid cylinder, a cone, a spiral sleeve, a shaft and a lower fixed plate. The spiral sleeve is in threaded connection to the cone. Both the cone and the spiral sleeve are sheathed on the shaft. Sealing threads are provided on an inner surface of the spiral sleeve, and there is a clearance between the sealing threads and the shaft. By the testing device, a spiral seal structure for a cone bit bearing is simulated, and the cone drives the spiral sleeve to rotate; and the sand draining performance of the spiral seal is tested by measuring the time required to drain sand-containing medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.