Leakage-free special pump

Abstract

A leakage-free special pump comprises a pump body, an eccentric shaft, an inner movable sleeve, an outer movable sleeve, an upper cover inner plate, a lower cover inner plate and a cylindrical capsule, wherein the eccentric shaft, the inner movable sleeve, the outer movable sleeve, the upper cover inner plate, the lower cover inner plate and the cylindrical capsule are disposed in the pump body. The capsule is provided with a plurality of capsule cavities in radial arrangement, the eccentric shaft is bridged between the upper cover inner plate and the lower cover inner plate through a bearing, and the inner movable sleeve and the outer movable sleeve are both sleeved inside and outside the eccentric shaft respectively. The capsule is mounted between the inner wall of the pump body and the outer movable sleeve, and a water inlet pipe opening and a water outlet pipe opening of each capsule cavity are correspondingly communicated with a water inlet valve assembly and a water outlet valve assembly on the pump body. The inner wall of the pump body is provided with an outer dovetail groove, the outer lateral wall of the outer movable sleeve is provided with an inner dovetail groove, and the inner lateral wall and the outer lateral wall of the capsule are provided with an inner dovetail protrusion and an outer dovetail protrusion which are in inserting fit with the inner dovetail groove and the outer dovetail groove respectively. The leakage-free special pump is satisfactory in structural design, water sucked in the capsule is high in quantity by forcedly stretching and extruding the capsule, and integral performance of the pump body is improved.

Description

technical field [0001] The invention relates to a pump, in particular to a special non-leakage pump. Background technique [0002] The well-known traditional impeller structure water pumps are all designed on the principle of centrifugal force. This kind of pump generally has the disadvantage of axial leakage, and its head and flow rate cannot be adjusted during pump operation, so it cannot be used for high head, small flow, non-leakage measurement, etc. Many technical issues. [0003] There is a kind of pump, which includes a pump body and an eccentric shaft assembled in the pump body, a movable inner sleeve, a movable outer jacket, and a capsule. The sleeve and the movable outer jacket are bridged between the pump body and the capsule. The movable inner sleeve and the movable outer jacket are connected on the eccentric shaft. The capsule is arranged between the pump body and the movable inner jacket and the outer jacket. Enclosed, the two ends of each capsule cavity are ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a non-leakage special pump, the main purpose of which is to overcome the unsatisfactory structural design of the existing pump, the amount of water sucked into the capsule is not large, and the capsule is prone to wrinkles, which affects the service life of the capsule and the overall performance of the pump body Shortcomings

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