Integrated external spring compensation type mechanical sealing device

Abstract

The invention discloses an integrated external spring compensation type mechanical sealing device. The integrated external spring compensation type mechanical sealing device is composed of a gland (1), a fixed ring (2), a moving ring (3), a compensation spring (4), a shaft sleeve (5), a transmission ring (6), a fixed ring auxiliary sealing ring (20), a moving ring sealing ring (30), a limiting ring (7) and locating clamp blocks (8). The components are integrally assembled together in the manner that the locating clamp block (8) fixed to the transmission ring (6) cooperates with the locating clamp block (8) fixed to the gland (1) in a hooked manner, and therefore the external mechanical sealing device is formed. The integrated external spring compensation type mechanical sealing device is compact in structure, convenient to mount, use and maintain and suitable for being used under the conditions that the content of impurity particles in conveying media is large, corrosiveness is high, and the axial mounting size is small.

Description

technical field [0001] The invention relates to a mechanical seal device, in particular to an external spring compensation mechanical seal device. Background technique [0002] The existing mechanical seals are generally built-in mechanical seals. The built-in mechanical seal device is set in the shaft cavity inside the end cover of the pump body. The moving ring, static ring assembly and elastic compensation element are immersed in the fluid medium delivered by the pump. The direction of seal leakage is from the outer circle to the inner circle of the seal end face. leakage. [0003] The built-in mechanical seal device has the corrosion of the elastic compensation element by the pump conveying medium. When the compensating element is a spring, the particles in the fluid medium pumped by the pump are easy to block the spring, especially when the medium contains a large amount of impurity particles and the viscosity of the impurity is large. The blockage of the seal is more...

AI Technical Summary

Problems solved by technology

[0003] The built-in mechanical seal device has the corrosion of the elastic compensation element by the pump conveying medium. When the compensating element is a spring, the particles in the fluid medium pumped by the pump are easy to block the spring, especially when the medium contains a large amount of impurity particles and the viscosity of the impurity is large. The blockage will be more serious, resulting in failure of the mechanical seal device and reducing the service life

[0004] In addition, when the axial and radial dimensions of the shaft cavity inside the end cover of the pump body are small, it is often restricted and impossible to install a mechanical seal device.

Images