Shield peripheral pump for conveying electronic refrigerant

Abstract

The invention relates to vane type pumps and discloses a shield peripheral pump for conveying an electronic refrigerant. The shield peripheral pump is mainly composed of an impeller, a pump body, a pump shaft, a stator assembly, a rotor assembly and the like. The shield peripheral pump has the characteristics that a to-be-conveyed medium, namely the electronic refrigerant enters the pump body through a suction inlet, through high-speed rotation of the impeller, most liquid is driven to a system through the suction inlet, flows to a gap between a rear outer bearing and a rear inner bearing through a gap between a stator shielding sleeve and a rotor shielding sleeve, flows to the impeller through a hole in the middle of a rear shaft head bolt through hole and flows to an outlet of the suction inlet, thus, a circulating loop is formed. Circulating medium conveying has the effects that on the one hand, heat generated by a motor is taken away, and on the other hand, a front bearing and a rear bearing of the motor are lubricated. The suction inlet and a front flange are welded in the sealing position, static seal between a pump cavity and the front flange is formed, a rear bearing seat and a rear flange are welded in the sealing position, static seal of the rear bearing seat and the rear flange is formed, and thus the effect that the whole electric pump is free of leakage can be achieved.

Description

technical field [0001] The invention relates to a vane pump, in particular to a shielded vortex pump for conveying electronic refrigerant. Background technique [0002] The vortex pump relies on the force of the rotating impeller on the liquid, and gives the liquid an impulse to transmit kinetic energy in the direction of the liquid movement to realize the delivery of the liquid. Nowadays, the famous pump factories in the world and in China, the manufacturers who master the vortex pump technology mainly use the dynamic sealing structure as the basis. The main and motor use deep groove ball rolling bearings. However, the existing vortex pump technology has the following problems that have not been resolved: 1. High noise: mainly due to the relatively large noise generated by the motor bearing and the motor cooling device, it is difficult for the existing technology to meet the requirements of quietness and close to quietness in some use occasions. 2. Difficulty in transporti...

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Problems solved by technology

However, the existing vortex pump technology has the following problems that have not been resolved: 1. High noise: mainly due to the relatively large noise generated by the motor bearing and the motor cooling device, it is difficult for the existing technology to meet the requirements of quietness and close to quietness in some use occasions. 2. Difficulty in transporting special media: the existing vortex pump is a dynamic seal structure, and because it is a mechanical seal, it is basically unable to transport special media, and can only transport clean water at normal temperature and pressure; 3. Leakage problem: the existing Due to the dynamic sealing structure of the advanced vortex pump, it cannot be guaranteed to be completely leak-free, especially for dangerous media. Once leakage occurs, the consequences will be unimaginable; 4. The pump body is large: the existing vortex pump requires auxiliary devices to dissipate heat from the motor, resulting in structural Complex, the volume of the pump as a whole increases, so the requirements for use occasions that require a limited space are more stringent; 5. The motor bearing is easily damaged. The existing vortex pump cannot balance the axial force because there is no self-balancing device. The deep groove ball rolling bearings used cannot withstand the axial force for a long time, which seriously affects the service life of the bearings, which in turn affects the service life of the pump

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