Rotor pump and assembly method thereof

Abstract

The invention discloses a rotor pump and an assembly method thereof, and belong to the technical field of rotor pumps. The rotor pump comprises a shell body, a first transmission shaft and a second transmission shaft, wherein a first bearing is arranged at one end of the first transmission shaft and in a first bearing seat on the shell body; a first rotor is arranged on the first transmission shaft; the second transmission shaft is in parallel transmission with the first transmission shaft; a second rotor is arranged on the second transmission shaft; a second bearing is arranged at one end ofthe second transmission shaft and in a second bearing seat on the shell body; and an injection molding groove is formed in the outer circumferential wall of the second bearing and / or the inner circumferential wall of the second bearing seat, and used for the injection molding and the accommodation of an injection molding agent. The rotor pump has the advantages that the a relatively good rotatinggap can be formed between the first rotor and the second rotor through adjustment without disassembly; and meanwhile, the rotating gap between the first rotor and the second rotor can be kept unchanged during the rotating process.

Description

technical field [0001] The invention relates to the technical field of rotor pumps, in particular to a rotor pump and an assembly method thereof. Background technique [0002] The rotor pump refers to the pump that changes the working volume through the relative movement between the rotor and the pump body, thereby increasing the energy of the gas or liquid; the rotor of the rotor pump rotates without impact, with high speed, compact structure, and relatively small volume. Small, so when transporting gas or liquid, the rotor pump has incomparable advantages over other pumps. [0003] However, in the existing rotor pump, in order to make the main transmission shaft and the driven shaft keep parallel to each other during the rotation process, so that the rotation gap between the rotor on the main transmission shaft and the rotor on the driven shaft is not large. Angle deviation occurs to prevent the rotor on the main transmission shaft from colliding with the rotor on the dri...

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Problems solved by technology

[0004] However, an interference fit is adopted between the bearing on the main transmission shaft and the housing, and an interference fit is also adopted between the bearing on the driven shaft and the housing; High machining accuracy, so that the effect of interference fit is better, so as to ensure that the main transmission shaft and the driven shaft have a better parallelism during the rotation process, and the processing cost is relatively high; on the other hand, when the rotor pump is assembled Finally, the gap between the two rotors is too small, and the rotor is stuck; or the gap between the two rotors is too large, so that the transmission efficiency is low; and the bearing and the housing are both interference fit, Partial adjustment is not possible, and the rotor pump needs to be disassembled and then reassembled, which is cumbersome and labor-intensive

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