Rotational flow pump with adjustable bladeless cavity clearance impeller

Abstract

The invention relates to a rotational flow pump with an adjustable bladeless cavity clearance impeller. The rotational flow pump comprises an impeller nut (1), a front cover (2), a wear-resisting plate (3), a pump body (4), the impeller (5), a hub adjustable device (6), a rear cover (7), a spindle (8), a packing gland (9) and other main structures. The rotational flow pump is characterized in that the impeller structure of the rotational flow pump is improved, the hub adjustable device (6) is mounted on the impeller (5) of the rotational flow pump, and through threaded connection, the hub adjustable device (6) is rotated to adjust a bladeless cavity clearance L of the rotational flow pump, that is, the bladeless cavity clearance is adjusted by adjusting the length of an impeller hub; and according to the rotational flow pump adopting the design method, the bladeless cavity clearance of the rotational flow pump can be adjusted according to the actual scene, so that the choice on the hydraulic performance or non-blocking performance of the rotational flow pump is achieved.

Description

technical field [0001] The invention mainly relates to a fluid machine, which is a swirl pump with an adjustable vaneless chamber gap impeller. Background technique [0002] The swirl pump is mainly used to pump complex media or fluids containing impurities, such as two-phase fluids containing garbage, short fiber matter or feces, but at the same time it also ensures the efficiency of the pump and the pump has good suction performance. The working principle of the swirl pump is that when the impeller rotates, the energy of the medium is increased by the centrifugal force, and the medium entering between the blades is pushed by the blades to move with the impeller. The medium near the top of the impeller outlet forms a through flow due to the large centrifugal force, and the medium in the middle of the impeller forms a circulating flow. The through flow flows out through the outlet of the pump cavity, forming a certain head; the solid particles and fibers in the medium gain ...

AI Technical Summary

Problems solved by technology

In many application scenarios, it is necessary to change the clearance L of the vaneless chamber of the swirl pump according to the actual situation. The traditional method is to adjust the clearance of the vaneless chamber by changing the position of the shaft step (because of the existence of the key, it cannot be adjusted by installing the shaft sleeve. Adjustment), this method of adjusting the clearance of the vaneless cavity will undoubtedly bring cumbersome installation and increase the cost

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