Self-balancing conical vacuum pump

Abstract

The invention discloses a self-balancing conical vacuum pump. The self-balancing conical vacuum pump comprises a pump body. The pump body comprises a first main pump body and a second main pump body. A main shaft penetrates through the pump body, the central axis of the first main pump body is not collinear with the central axis of the second main pump body, and the central axis of the main shaft is not collinear with the central axis of the first main pump body or the central axis of the second main pump body. A floating end pump cover is arranged at the outer end of the first main pump body, and a fixed end pump cover is arranged at the outer end of the second main pump body. The two ends of the main shaft are supported through bearings, the main shaft is provided with a first conical body, an impeller and a second conical body in a sleeving mode, the first conical body and the impeller are located in the first main pump body, the second conical body is located in the second main pump body, the first conical body and the first main pump body are arranged in an eccentric mode, the second conical body and the second main pump body are arranged in an eccentric mode, and the eccentric direction between the first conical body and the first main pump body is opposite to the eccentric direction between the second conical body and the second main pump body. According to the self-balancing conical vacuum pump, balance of the radial force of the impeller can be guaranteed, and therefore long-term stable operation of the pump can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of vacuum pumps, in particular to a self-balancing cone type vacuum pump. Background technique [0002] The structure of the traditional liquid ring vacuum pump is a single-stage impeller. Because its distributor is a flat disc type, it is often called a flat disc pump. The center of the pump cavity of the pump body and the single-stage impeller are designed eccentrically, so that the impeller, liquid ring and pump cavity form a sealed cavity that changes periodically, and vacuum exhaust is realized; however, due to the single-stage impeller and the pump cavity The eccentric design of the pump body leads to the unbalanced radial force of the impeller, which has a certain negative impact on the stable operation of the pump. [0003] In addition, the inlet and exhaust ports of the traditional flat disc pump are all opened on the disc distributor. Due to the limitation of the upward eccentricity of the impelle...

AI Technical Summary

Problems solved by technology

The center of the pump cavity of the pump body and the single-stage impeller are designed eccentrically, so that the impeller, liquid ring and pump cavity form a sealed cavity that changes periodically, and vacuum exhaust is realized; however, due to the single-stage impeller and the pump cavity The eccentric design of the pump body leads to the unbalanced radial force of the impeller, which has a certain negative impact on the stable operation of the pump

[0003] In addition, the inlet and exhaust ports of the traditional flat disc pump are all opened on the disc distributor. Due to the limitation of the upward eccentricity of the impeller of the flat disc pump and the shape of the liquid ring, the inlet and exhaust ports of the flat disc pump It cannot be opened very large, which will seriously affect the air volume of the pump body. If you want to increase the air volume of the main body, you must double the diameter of the pump body, which will eventually lead to the overall size of the pump and heavy weight

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