Double-end-face bellows sealing device for ball mill

Abstract

The invention discloses a double-end-face bellows sealing device for a ball mill. The device is characterized by comprising an inner static ring assembly, an outer static ring assembly, a shaft sleeve, an inner press cover and an outer press cover. The shaft sleeve is arranged on a stirring shaft, the inner press cover and the outer press cover are sleeved on the outer side of the shaft sleeve, and a space is reserved between the inner press cover and the outer press cover and the outer wall of the shaft sleeve to form a sealing cavity. The inner static ring assembly and the outer static ring assembly are arranged in the sealing cavity, the outer end of the inner static ring assembly is fixed on the inner press cover, an inner dynamic ring is attached to the inner end to form inner end face sealing, the outer end of the outer static ring assembly is fixed on the outer press cover, and an outer dynamic ring is attached to the inner end to form outer end face sealing. The device adopts a belt pressing sealing form, radial size is compact, washing and cooling effects are good, a sealing surface liquid film is stable, and the service life is long.

Description

technical field [0001] The invention relates to a mechanical sealing device, in particular to a double-end bellows sealing device for a ball mill. Background technique [0002] Ball mills are widely used in stirring and grinding operations in food, cosmetics, emulsification, paint and other industries. The traditional seal is a single-end or double-end spring-type mechanical seal. Especially in the field of uniform paint grinding, the ball mill plays an irreplaceable role. However, when polishing paint jobs, there are mainly the following problems: [0003] 1. The medium used is solvent and high-hardness abrasive emery, zirconia mixed with paint, the paint is polished evenly through the relative movement of the stator and the rotor stirring blade, and many fine particles are produced at the same time. Over time, these particles occupy the outside of the dynamic and static ring and penetrate into the The position of the auxiliary sealing ring of the dynamic and static rings...

AI Technical Summary

Problems solved by technology

[0004] 2. The spring seal is extremely sensitive to the circular runout of the stirring shaft of the equipment and the verticality of the cavity. When the sealing surface is opened and closed, the end surface follows poorly, and small hard particles are easy to enter the sealing end surface, which will cause the sealing surface to be scratched and scratched, and the seal will fail.

[0005] 3. During stirring and grinding operations, the solvent used is highly corrosive and permeable. When the solvent leaks to the atmosphere side with a single-end spring seal, it will easily pollute the environment and be harmful to human health and safety.

[0006] 4. The single-end or double-end mechanical seals used in ball mills, whether imported or domestic, are mostly non-packaged spring seals. The axial and radial positioning of the seal is greatly affected by the accuracy of the equipment and the quality of the installer. The design intent and use effect of the seal cannot be achieved, and the service life of the seal is short

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