Multi-stage combined compensation type rotating shaft sealing device
By using a multi-stage combined compensation rotary shaft seal device, which combines wedge seals, soft packing seals, and nitrogen seals, the problem of rapid wear of existing shaft end seals has been solved, achieving a long service life and high reliability sealing effect.
CN224550769UActive Publication Date: 2026-07-24LANZHOU TIANDA HUARUI ENVIRONMENTAL ENG TECH CO LTD
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Patent Information
- Application Number
- CN202522467476.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-07-24
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Technical Problem
Existing shaft end seals wear out quickly, leading to media leakage and energy waste, affecting equipment stability and product quality, and requiring frequent maintenance.
Method used
A multi-stage combined compensation rotary shaft sealing device is adopted, which includes a combination of a wedge-shaped sealing chamber, a soft packing sealing chamber, a nitrogen sealing chamber, and a single-end mechanical seal. The wedge-shaped sealing ring and the pressure ring's inclined structure increase the contact area, and the O-ring and anti-rotation key improve the sealing effect.
Benefits of technology
It extends the service life of the sealing device, improves sealing reliability and ease of maintenance, and reduces maintenance frequency and energy consumption.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to the field of machinery, in particular to a multistage combined compensation type rotating shaft sealing device. The shaft and the bushing pass through the container wall (13); the shaft and the shaft sleeve are combined through a pin and can rotate together; a first-stage wedge-shaped sealing bin, a second-stage soft packing sealing bin, a third-stage nitrogen sealing bin and a fourth-stage single-end-face mechanical seal are sequentially arranged on the shaft sleeve outside a container wall (13) from the container wall to the outside; the first-stage wedge-shaped seal adopts a wedge-shaped sealing ring and a pressing ring which are both made of non-metallic materials, a sealing surface, namely a contact surface, is an inclined surface, and the inclined surface structure increases the contact area and delays abrasion in the stress process; the die spring is arranged between the right-angle side of the wedge-shaped sealing ring and the sealing gland, the die spring is in a compressed state when the sealing device is initially used, the die spring gradually extends along with abrasion of the wedge-shaped sealing ring and the pressing ring, it is effectively guaranteed that the sealing faces of the wedge-shaped sealing ring and the pressing ring are in good contact, and the service life of a non-metal sealing piece is prolonged.
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