Leakage-free pump shafting assembly stable in structure and convenient to install

Abstract

The invention discloses a leakage-free pump shafting assembly stable in structure and convenient to install. The leakage-free pump shafting assembly comprises a sliding bearing assembly, a thrust disc assembly and a shaft sleeve assembly; the sliding bearing assembly comprises a bearing seat and a sliding bearing, the sliding bearing is located in the bearing seat, and the bearing seat is provided with a first anti-falling structure; the thrust disc assembly comprises a thrust ring and a thrust disc seat, the thrust ring is located in the thrust disc seat, and a second anti-disengaging structure and a transmission device are arranged on the thrust disc seat; and the shaft sleeve assembly comprises a shaft sleeve and an expansion sleeve, the expansion sleeve is located in the shaft sleeve, a clearance compensation structure and an installation structure are arranged on the expansion sleeve, a pump shaft is sleeved with the thrust disc seat and the expansion sleeve, and the sliding bearing is arranged on the shaft sleeve in a sleeve manner; and the thrust ring faces the sliding bearing, and the transmission device is matched with a transmission structure. According to the leakage-free pump shafting assembly stable in structure and convenient to install, original heating inlaying is changed into combined installation, the installation operation difficulty is lowered, and the sliding bearing and the thrust ring can be prevented from axially disengaging.

Description

technical field [0001] The invention relates to the technical field of a non-leakage pump shaft assembly, in particular to a non-leakage pump shaft assembly with stable structure and easy installation. Background technique [0002] Non-leakage pumps are widely used in the chemical industry. Shafting components are the key supporting components of non-leakage pumps. The wearing parts of traditional non-leakage pumps include three-piece shafting sets: sliding bearings, shaft sleeves and thrust plates. At present, the sliding bearing is assembled as a whole by heating and expanding the bearing body or the pump cover of the metal main body, the shaft sleeve is directly set on the pump shaft, and the thrust ring is inlaid on the thrust disc seat after heating and expansion. When the pump is running, the sliding bearing, the shaft sleeve and the thrust ring form a friction pair with each other. Since the three-piece shafting set is made of high wear-resistant and high-hardness mat...

AI Technical Summary

Problems solved by technology

When the pump is running, the sliding bearing, the shaft sleeve and the thrust ring form a friction pair with each other. Since the three-piece shafting set is made of high wear-resistant and high-hardness materials, it usually has a much smaller thermal expansion coefficient than other parts of the pump. When the temperature When raised, the sliding bearings, bushings and thrust rings are often shattered or axially protruded, resulting in equipment damage, which greatly limits the scope of use of non-leakage pumps

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