Pump with replaceable assembled liner

Abstract

The invention discloses a pump with a replaceable assembled liner. The pump is characterized in that the replaceable assembled liner is arranged in a pump cavity formed by a pump body and a seal cavity cover, and comprises an impeller, a volute core and a volute core cover; the impeller is fixedly arranged on a pump shaft through a key, and is tightly screwed by an impeller nut; the volute core is positioned between the pump body and the seal cavity cover; one end of the volute core is positioned on the pump body through a volute core positioning pin, and the other end of the volute core is sealed by the seal cavity cover; one or more nozzles communicated with the pump body are arranged in the circumferential direction of the volute core; a gap is reserved between the volute core and the pump body; an opening ring is arranged between the volute core and a front cover plate of the impeller; the volute core cover and the volute core are matched with the seal cavity cover and are used for tightly compressing the seal cavity cover; and a flow channel which sequentially pass through the volute core, the impeller and the nozzles is formed from a pump inlet to a pump outlet. By the pump, assembly structures of the same pump type can meet variation requirements under various working conditions.

Description

technical field [0001] The invention relates to a pump, more specifically to a device widely used in conveying liquid, vapor-liquid and vapor-solid mixture. Background technique [0002] The pump mainly transports liquid, vapor-liquid, and vapor-solid mixture. It is a device that converts the energy delivered by the prime mover into liquid pressure energy. It is currently widely used in petrochemical, agricultural irrigation, aerospace, and coal mines. However, in the traditional pump structure, the fluid enters the impeller to obtain energy and is discharged directly through the volute or guide vane, which makes a pump type combination structure correspond to a working condition, which is not conducive to standardized manufacturing and field device working condition changes, and the design cost And the production cost is high, when the lift and flow of the pump cannot meet the requirements, the pump type must be replaced forcibly, which greatly wastes manpower, material res...

AI Technical Summary

Problems solved by technology

However, in the traditional pump structure, the fluid enters the impeller to obtain energy and is discharged directly through the volute or guide vane, which makes a pump type combination structure correspond to a working condition, which is not conducive to standardized manufacturing and field device working condition changes, and the design cost And the production cost is high. When the head and flow of the pump cannot meet the requirements, the pump type must be replaced forcibly, which greatly wastes manpower, material resources and financial resources.

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