Rolling type sliding vane pump rotor

Abstract

The invention relates to a rolling type sliding vane pump rotor comprising a rotor body and a plurality of sliding vane bodies. The rotor body is sequentially provided with a plurality of sliding grooves in the circumferential direction of the rotor body, and the sliding vane bodies are arranged in the corresponding sliding grooves in a manner of being capable of sliding in the radial direction; the rolling type sliding vane pump rotor further comprises pin rollers rotationally arranged at the tops of the sliding vane bodies in a matched manner, and the tops of the sliding vane bodies are provided with arc pin roller grooves being capable of containing the pin rollers and being in sealing contact with the outer circles of the pin rollers; and each sliding groove extends in the axial direction of the rotor body and penetrates to the two ends of the rotor body in the axial direction, and the axial length of the pin rollers and the axial length of the sliding vane bodies are both the sameas the axial length of the rotor body. The rolling type sliding vane pump rotor effectively avoids the volume loss caused by components such as pin roller seats in the prior art, greatly improves theefficiency of a sliding vane pump and avoids use of connecting members such as bearings, so that the service life is long, and a medium containing impurity particles can be effectively transported.

Description

technical field [0001] The invention relates to the technical field of vane pumps, in particular to a rolling vane pump rotor. Background technique [0002] The sliding vane pump is a volumetric pump with a rotating structure. The sliding vane pump relies on centrifugal force to seal the sliding vane and the housing during the reciprocating movement of the sliding vane when the rotor rotates. The sliding vanes of the traditional sliding vane pump all operate in the form of sliding, that is, the sliding vanes can be provided with double lobes, three lobes or more as required in the outer circle of the rotor. Among them, the centrifugal force of the sliding vanes makes the sliding vanes The top surface and the inner cavity of the shell form a sliding operation from the suction cavity to the discharge cavity, so as to achieve the function of transporting various liquids. However, during the operation of the above-mentioned sliding vane pump, the sliding vane is in direct conta...

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Problems solved by technology

[0003] However, the above-mentioned sliding vane pump has certain problems. First, the rollers of the rolling device are fixed on the roller seat through the shaft, and then fixed on the slide body through the roller seat. Since the roller seat is stationary Yes, there is sliding friction between the end face of the roller seat and the inner surface of the housing, and rolling friction between the roller and the inner surface of the housing, so the wear degree of the end face of the roller seat is the same as the wear degree of the surface of the roller Different, among them, the wear of the end face of the roller seat is faster, and the wear of the surface of the roller is relatively slow, so in the design, the surface of the roller is part of the end face of the roller seat, which inevitably makes the roller There is always a gap between the end face of the column seat and the inner surface of the housing, this structure greatly increases the volume loss of the sliding vane pump, making the pumping efficiency of the sliding vane pump lower; secondly, the rollers of the above sliding vane pump are It is connected to the roller seat through bearing rotation. In actual use, it is found that because the linear velocity of the roller is too high, the rotational speed of the bearing will be very high, so the service life of the shaft and bearing and other components is very short. Moreover, with the bearing The structure of the sliding vane pump cannot be used to transport the medium containing impurities, because the impurity particles in the medium are easy to get stuck in the above-mentioned bearings, which will damage the bearings and also shorten the service life of the sliding vane pump; moreover, the The two ends of the roller are limited on the roller seat. During the operation of the sliding vane pump, because the side wall of the roller is under the pressure of the high-pressure medium, the middle position of the roller is easily bent and deformed. The deformed roller and the A gap will be formed between the inner surfaces of the casing, which will increase the volume loss of the sliding vane pump and reduce the pumping efficiency of the sliding vane pump.

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