The mixer is designed for stirring drilling fluids in oil drilling, featuring a compact structure and minimal footprint. The 7.5kW and above drilling fluid mixers utilize worm gear reduction transmission, offering advantages such as high torque transmission, smooth operation, and reliable performance. Commonly used models include J320, J140, J360, and J310. To ensure the mixer's operational performance, its sealing issue is a concern for many users. The technical department provides the following overview:
A reliable seal for mixers is a crucial issue. Oil leakage caused by the shaft seal of the mixer not only wastes a large amount of oil but also contaminates the drilling fluid. The shaft seal of a drilling fluid mixer is classified as low-speed and low-pressure, making the stuffing box seal more suitable due to its simple structure, ease of maintenance, and high reliability.
Filler sealing is an early type of rotating shaft seal structure, often used in mixers due to its simplicity. The principle of filler sealing relies on the pressure from the cover, which compresses the filler within the sealing box, thereby exerting radial pressure on the surface of the mixing shaft. As the filler contains lubricants, it forms a liquid film on the mixing shaft, which not only lubricates the shaft but also prevents the leakage of lubricating oil from the equipment.
We hope the seal issue of the mixer structure introduced above can be of help to you.