Radial stationary ring adjusting mechanism for mechanical sealing device

Abstract

The invention relates to a radial stationary ring adjusting mechanism for a mechanical sealing device. The mechanism comprises a sealing box and a stationary ring base which is located in the sealing box and provided with a stationary ring, and the stationary ring base is installed in the sealing box and axially slides and conducts sealing by depending on a sealing ring; a supporting space is reserved between the inner wall of the stationary ring base and the outer wall of a shaft sleeve, and a radial stationary ring adjusting mechanism body for overcoming the defect that the stationary ring and the stationary ring base sink due to gravity is installed in the supporting space. According to the radial stationary ring adjusting mechanism for the mechanical sealing device, the problems that a dynamic ring and a static ring of a large-shaft-diameter mechanical sealing compensation stationary ring are not concentric due to the gravity, and the frictional force in the axial circumferential direction is not uniformly distributed due to the fact that the circumferential clearances of the sealing ring arranged between the stationary ring and the stationary ring base in a sealing mode are not uniform are solved, the stability and the reliability of the user equipment performance are guaranteed, the off-tracking, ejecting, dripping and leaking problems of equipment shaft sealing are solved, and the service life of the sealing device is prolonged.

Description

technical field [0001] The invention relates to the field of mechanical seals, and more specifically relates to a static ring radial adjustment mechanism used on a mechanical seal device. Background technique [0002] At present, the shaft sealing device of large-scale dredgers at home and abroad adopts L-shaped rubber gasket sealing device. Its working principle is that three static L-shaped rubber gaskets and the rotating shaft sleeve dynamically rub against each other to provide high-pressure clean air between the L-shaped rubber gasket seals. Water is used to lubricate and block the pumped medium, and the self-elasticity of the rubber and its attached springs are used to provide wear compensation to achieve the purpose of sealing. See figure 1 . This kind of sealing device is suitable for a narrow range of working conditions, and its service life is unstable. The actual service life is mostly 1 to 6 months. It is affected by deflection, vibration, sharp particles and so...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems existing in the known technology, the present invention provides a method for compensating the static ring of a large shaft diameter due to gravity to cause the problem of non-concentricity of the dynamic and static rings, and the uneven circumferential gap of the sealing ring between the static ring and the static ring seat. The problem of uneven distribution of friction force in the axial and circumferential direction ensures the stability and reliability of the user's equipment performance, and at the same time solves the problems of running, leaking, dripping, and leaking of the equipment shaft seal, and prolongs the service life of the sealing device. It is used for mechanical sealing devices static ring radial adjustment mechanism

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