Noise reduction type water seal for automobile water pump

Abstract

The invention provides a noise reduction type water seal for an automobile water pump. The water seal comprises a movable ring assembly and a static ring assembly; a first outer side ring extending outwards in the radial direction of a shaft sleeve is arranged at one end of the shaft sleeve, an installation base is arranged at the end, away from the first outer side ring, of the shaft sleeve in a sleeving mode, a second outer side ring extending outwards in the radial direction of the installation base is arranged at the end, away from the first outer side ring, of the installation base, and a first annular ring extending towards the first outer side ring is arranged on the outer edge of the second outer side ring; a moving ring is arranged on the outer side of the shaft sleeve in a sleeving mode; an inner sleeve is arranged on the outer side of the installation base in a sleeving mode; a static ring is arranged on the outer side of the inner sleeve in a sleeving mode and abuts against the moving ring; an outer sleeve is arranged on the outer side of the static ring in a sleeving mode; a corrugated rubber pipe is arranged in the gap among the installation base, the inner sleeve, the static ring, the outer sleeve and an inner side ring; and an elastic noise-reducing ring is arranged in the gap between the outer sleeve and the installation base. According to the water seal, the metal elastic noise-reducing ring is additionally arranged in the gap between the outer sleeve and the installation base to reduce or eliminate vibration, and therefore noise can be avoided or lowered to be lower than the human ear hearing range.

Description

technical field [0001] The invention relates to the technical field of water pump water seals, in particular to a noise-reducing water pump water seal for automobiles. Background technique [0002] In the prior art, an engine cooled by coolant usually requires a water pump to provide proper flow and lift. When the water pump is working, a water seal is required to seal between the water pump bearing and the pump body. The water seal device of the water pump usually mainly includes a bellows, a mounting seat, a spring, an inner sleeve, an outer sleeve, a static ring, a moving ring and a shaft sleeve. The bellows seat of the water seal device is installed in the installation hole of the water pump body, and is pressed by a spring. The static ring of the water seal is connected with the bellows seat, and forms a sealing structure with the moving ring attached to the shaft sleeve. Among them, the shaft sleeve and the water pump bearing adopt interference fit. The water seal s...

AI Technical Summary

Problems solved by technology

[0003] The vibration generated by the currently used water seal device during the movement will be transmitted to the static ring, rubber bellows, outer sleeve and other components. The mounting base is elastically connected, there are 6 degrees of freedom in the direction, the vibration cannot be weakened or eliminated, and noise is generated

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