Mechanical sealing device for high-speed sand mill

Abstract

The invention relates to a mechanical sealing device for a high-speed sand mill. The mechanical sealing device comprises an outer gland, an inner gland and a shaft sleeve. The shaft sleeve is sleeved with the outer gland and the inner gland. The outer gland and the inner gland are connected through a screw. An inner movable ring is arranged at the right end of the shaft sleeve. The right end of the inner gland is sleeved with an inner static ring assembly. The right end face of the inner static ring assembly is in fit with the left end face of the inner movable ring, and a main seal is formed. An inner movable ring assembly with which the shaft sleeve is sleeved is arranged in the gap between the shaft sleeve and the outer gland. The outer gland is provided with an outer static ring assembly. The left end face of the outer movable ring assembly is in fit with the right end face of the outer static ring assembly, and therefore a safe seal is formed. An isolation sleeve is arranged in the gap among the inner gland, the outer gland and the shaft sleeve. A sealing cavity is formed between the isolation sleeve and the inner gland and communicates with a liquid feeding hole, the sealing cavity communicates with an overflowing hole inside the inner gland, and therefore a liquid loop is formed. The mechanical sealing device is used for a device which is rotated at a high speed, a sealing end face is not likely to be damaged, and the service life is longer.

Description

technical field [0001] The invention belongs to the technical field of mechanical seals, and in particular relates to a mechanical seal device for high-speed sand mills. Background technique [0002] Sand mills are widely used in stirring and grinding operations in food, petrochemical, emulsification, paint and other industries. The traditional seals are packing, single-end or double-end spring-type mechanical seals. Especially in the field of nano-scale materials for new energy, the sand mill industry is developing rapidly. With the improvement of technology and output requirements, various manufacturers have successively developed sand mill products with a rotating speed of 3000rpm~15000rpm, but limited by the existing mechanical seal technology used, the test operation effect of new products is not ideal, mainly as follows question: [0003] 1. At present, the mechanical seals used for sand mills generally use unbalanced mechanical seals. The reason for using them is th...

AI Technical Summary

Problems solved by technology

[0010] In order to solve the technical problems in the prior art that the unbalanced mechanical seal has a short service life, cannot be used in high-speed rotary conditions, and the sealing end face is easily damaged, the present invention provides the following technical solutions:

Images