A centrifugal pump with self-lubricating bearings and self-centering

Abstract

The invention belongs to the field of pump equipment, and in particular relates to a centrifugal pump with a self-lubricating bearing and self-centering function. The invention comprises a pump casing, a pump impeller for driving the medium in the pump casing to flow in a predetermined direction, a pump shaft for driving the pump impeller to rotate, and a driving source for driving the pump shaft to rotate at least at one end of the pump shaft, the pump casing The pump body is provided with a pump chamber for medium circulation, the pump shaft is passed through the pump casing and the pump impeller is accommodated in the pump chamber, and the centrifugal pump also includes a bearing assembly for supporting the pump shaft. The bearing assembly There is a passage for the medium to communicate between the place to be lubricated and the pump chamber on the pump. The present invention utilizes the liquid fluidity of the medium itself to realize the self-lubricating effect of the bearing assembly, which effectively reduces the processing technology of the centrifugal pump to a great extent, thereby achieving the effect of simplifying the assembly structure of the centrifugal pump, which has a simple structure and good stability , High work reliability.

Description

technical field [0001] The invention belongs to the field of pump equipment, in particular to a centrifugal pump with a self-lubricating bearing and a self-centering function. Background technique [0002] The centrifugal pump is a device that transfers the mechanical energy of the prime mover to the liquid by means of the rotating suction of the impeller to the liquid. It is widely used in many fields such as petrochemical, agricultural irrigation, aerospace, and coal mines. On the one hand, as one of the important components of the centrifugal pump, the working performance of the bearing assembly directly affects the pump shaft of the centrifugal pump and its overall working ability; the bearing assembly is a component that is sleeved on the pump shaft to support the pump shaft. Traditional centrifugal pump bearing assemblies are mostly lubricated with oil or grease, and at the same time must have an independent bearing housing for fixing, which is described in the Chinese...

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Problems solved by technology

On the other hand, for the current assembly operation of centrifugal pumps, the pump casing with the main structure is usually directly fixed to the fixed frame by bolts to maintain its fixed purpose. Since there are no positioning parts, only the distance between the two The positioning operation consumes a lot of time for the assembly personnel, and the assembly and subsequent assembly and disassembly maintenance are extremely time-consuming and laborious. These obviously affect the actual production efficiency of the manufacturer and even the user.

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