Vacuum pump capable of achieving multiple vacuum degrees

Abstract

The invention provides a vacuum pump capable of achieving multiple vacuum degrees. The vacuum pump comprises a base, and the base is provided with a high speed double-shaft drive motor, a first vacuumpump body and a second vacuum pump body, wherein the first vacuum pump body and the second vacuum pump body are installed at the right and left ends of the high speed double-shaft drive motor symmetrically; output shafts at the right and left ends of the high speed double-shaft drive motor penetrate through outer shells of the first vacuum pump body and the second vacuum pump body separately, andare directly connected with impellers in the outer shells; and the second vacuum pump body is provided with a first air inlet and a second air inlet, wherein an exhaust port of a first vacuum pump onthe first vacuum pump body is connected with the first air inlet in the second vacuum pump body through a communicating pipe. According to the vacuum pump capable of achieving the multiple vacuum degrees, not only can the high vacuum degrees be achieved, but also the requirements of multiple vacuum points and different vacuum degrees in the industry can be met; and the purpose of replacing a plurality of machines with one machine is achieved, and the equipment investment and operating cost are reduced greatly.

Description

technical field [0001] The invention relates to the technical field of vacuum pumps, in particular to a vacuum pump capable of realizing multiple vacuum degrees. Background technique [0002] A vacuum pump is a device or device that uses mechanical, physical, chemical and other methods to pump air into a container to obtain a vacuum, that is, a device that uses various methods to improve, generate and maintain a vacuum in a closed space. According to the working principle of the vacuum pump, it is basically divided into two types: gas capture pump and gas transmission pump, which are widely used in metallurgy, chemical, food, paper and other industries. The degree of vacuum refers to the degree of thinness of the gas in a vacuum state, usually expressed by the pressure value. Whether the performance of the vacuum pump is efficient or not usually depends on the parameter index of 'vacuum degree'. [0003] At present, water ring vacuum pumps and rotary vane vacuum pumps are ...

AI Technical Summary

Problems solved by technology

[0003] At present, water ring vacuum pumps and rotary vane vacuum pumps are the most widely used in industry. These pumps have disadvantages such as low vacuum degree and high energy consumption, which virtually increase equipment investment and operation costs.

When there are many vacuum points and different vacuum levels in papermaking or other industries, it is often difficult to meet its use requirements.

Moreover, most of the current vacuum pumps are directly driven by ordinary motors, and are connected with the motor and the impeller by couplings and gear speed increasers, resulting in a relatively complicated shaft system for power transmission, and a large number of bearings used, causing potential failures If the number of points increases, the stability of the transmission will be poor, and the power consumed will be high, which will affect the working effect of the vacuum pump. limits

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