Full-vortex spin-dry type vacuum pump

Abstract

The invention relates to an all volution rotary drying vacuum pump, belonging to the vacuum production equipment field. The vacuum pump comprises an electric motor (1), a support (2), a pump body (4), a volution disk, a drive shaft (14), a driven shaft (9), an air inlet (6) and an air outlet (10), wherein, the electric motor (1) is connected with the pump body (4) by the support (2), and the volution disk is installed in the pump body (4). The vacuum pump is characterized in that a transmission mechanism is added to the end of the driven shaft, and the volution disk comprises a driving volution disk (5) and a driven volution disk (7). As the two volution disks rotate around the shaft lines thereof, the vacuum pump can have favorable dynamic balance performance. When errors during processing or abrasion during application occurs, the precision error and an abrasion gap can be made up by adjusting the start angle of one of the volution disks. The vacuum pump has simple structure, changes the original design of moveable and fixed disks, does not the production of a high precision crank shaft and a crosshead shoe, lowers the requirements on the production and processing precision, and provides convenience for mass production.

Description

technical field [0001] The utility model relates to a full vortex dry vacuum pump, which belongs to the field of vacuum obtaining equipment. Background technique [0002] The vortex pumping mechanism was invented and patented by the American Cruex in 1905 in the last century. It was not until the early 1980s that it entered the practical period due to the development of numerical control technology. The vortex vacuum pump is a simple structure with few parts. The new type of dry vacuum pump, the working pressure starts from 101300Pa, the gas is directly discharged into the atmosphere, and the ultimate pressure of a single unit can reach 1Pa, so it is an advanced vacuum pump. Conventional scroll vacuum pumps have two scroll disks used to form air pumping, one is fixed as a fixed disk, and the other is reversely eccentrically installed and can swing as a moving disk. The moving disk is driven by the crankshaft to perform swinging motion without any Self-rotation movement, so ...

AI Technical Summary

Problems solved by technology

Conventional scroll vacuum pumps have two scroll disks used to form air pumping, one is fixed as a fixed disk, and the other is reversely eccentrically installed and can swing as a moving disk. The moving disk is driven by the crankshaft to perform swinging motion without any Self-rotation movement, so it is necessary to have a cross slide mechanism to prevent self-rotation movement or at least three pairs of small anti-rotation crankshafts, and the manufacturing precision of the crankshaft and cross sliders is very high, which limits the development and application of scroll vacuum pumps, and due to the existence of Anti-rotation mechanism, the relative position of the moving plate is fixed, there is no remedial measure for machining errors or wear during operation, and the scroll body can only be scrapped, which is not suitable for mass production

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