Adjustable mechanical sealing structure for pump

Abstract

The invention discloses an adjustable mechanical sealing structure for a pump, and relates to the adjustable mechanical sealing structure for a horizontal wear-resistant slurry pump and belongs to the technical field of mechanical sealing. The adjustable mechanical sealing structure for the pump comprises a moving ring, a stationary ring, a push ring, a spring, a framework oil seal, an oil seal press cover, a set screw, an inner hexagon bolt, a positioning clip, a bolt, an O-shaped ring, a second connecting flange, a driving ring, an inner shaft sleeve and an outer shaft sleeve, wherein the inner shaft sleeve and the outer shaft sleeve are in sleeve matching, axial distances of the inner shaft sleeve and the outer shaft sleeve can be regulated from -5 millimeters to +5 millimeters; and the connecting flange is additionally provided with a high-pressure water inlet on the basis of an existing low-pressure water inlet and an existing low-pressure outlet, a runner used for introducing high-pressure flushing water a cavity at the inner side of the moving ring and the stationary ring is processed inside the connecting flange, and the pressure of the high-pressure flushing water injected from the high-pressure water inlet is larger than that of the cavity. By virtue of the adjustable mechanical sealing structure for the pump, axial regulation of mechanical sealing can be realized, and complete cooling on the moving ring and the stationary ring can be ensured, thereby the service lives of the moving ring and the stationary ring are greatly prolonged.

Description

technical field [0001] The invention relates to a mechanical seal structure used on a centrifugal pump, in particular to an adjustable mechanical seal structure for a horizontal wear-resistant slurry pump, which belongs to the technical field of mechanical seals. Background technique [0002] The mechanical seal is an anti-leakage device composed of at least one pair of end faces perpendicular to the rotation axis, under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal, which are kept in contact and relatively sliding. Mechanical seals are mainly used as sealing devices for rotating machinery, such as centrifugal pumps, centrifuges, reactors and compressors. For this kind of rotating machinery, since the transmission shaft runs through the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment, and the fluid medium in the equipment le...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that the mechanical seal cannot be adjusted axially, the cooling is insufficient, and the service life of the moving ring and the static ring is short. The present invention discloses an adjustable mechanical seal structure for pumps, which can realize The axial adjustment of the mechanical seal ensures sufficient cooling of the moving ring and the static ring, and greatly prolongs the service life of the moving ring and the static ring

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