A clearance-adjustable twin-screw pump

Abstract

The invention discloses an interval-adjustable two-screw pump. The interval-adjustable two-screw pump not only comprises components of a common two-screw pump, but also comprises a replaceable pump body internal lining, a pump front cover plate matched with the internal lining, a screw sliding bearing seat capable of being machined, a replaceable driving wheel and a replaceable driven wheel. Compared with the common two-screw pump, only by replacing the replaceable internal lining in a pump body, the pump front cover plate, the driving wheel and the driven wheel, slightly machining the surface of the sliding bearing seat, and reducing the central distance between two screws through mutual pressing of the two screws, are the leakage of the pump caused by abrasion to the screws and the pump lining and caused loss on the performance aspect reduced, so that the service life of the interval-adjustable two-screw pump is prolonged, and the maintenance cost of the interval-adjustable two-screw pump is lowered.

Description

technical field [0001] The invention belongs to the field of machinery, in particular to a gap-adjustable twin-screw pump which can adjust the distance between the screw rods by processing and replacing parts so as to prolong the service life. Background technique [0002] As a widely used positive displacement pump, the twin-screw pump relies on the volume change of the sealed cavity formed by two intermeshing screws and the inner wall of the pump to transport substances. The twin-screw pump has the characteristics of no agitation, no pulsation, stable output of various media, small mechanical vibration, and low noise. Since the structure of the pump body ensures that there is always pumped liquid in the working components of the pump as the sealing liquid, it has strong self-priming performance and is often used for multi-phase mixed transportation. For example, it can transport oil, water, paste, emulsion, asphalt and some other chemical media. [0003] Due to the worki...

AI Technical Summary

Problems solved by technology

As a result, the gap between the screw and the screw and between the screw and the bushing gradually expands, which increases the amount of material leakage, thereby reducing the performance of the pump.

Compared with other types of screw pumps, the structure of the twin-screw pump is more complicated, the price is slightly higher, and it is easy to cause end face wear when multi-phase mixed transport such as transporting water-containing sludge

And the maintenance cost is huge. Once the wear is serious, the entire pair of screws and the entire bushing need to be replaced

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