Vacuum pump with auxiliary exhausting mechanism

Abstract

The invention relates to a vacuum pump with an auxiliary exhausting mechanism. The vacuum pump comprises an oil tank, a pump body arranged in the oil tank and an oil-gas separator disposed on one sideof the oil tank; the pump body comprises a first exhausting opening formed in the top of the pump body; the oil-gas separator comprises a shell and an exhausting filter element which is fixed into the shell; a second exhausting opening is formed in the shell; a passing opening which is in butt joint with an inlet of the exhausting filter element is formed in one side, close to the shell, of the oil tank and located above the first exhausting opening; the auxiliary exhausting mechanism which communicates with the interior of the shell is disposed on the oil tank and comprises a flow guiding wall which protrudes inwards from the inner wall of the oil tank, and an exhausting cavity is formed between the inner wall of the oil tank and the flow guiding wall; and a third exhausting opening which communicates with the exhausting cavity is formed in the outer wall of the oil tank. The vacuum pump is good in oil-gas separation effect, and the mounting position selectivity of externally-connected exhausting pipes is diversified.

Description

technical field [0001] The invention relates to the field of vacuum pumps, more specifically, it relates to a vacuum pump with an auxiliary exhaust mechanism. Background technique [0002] The vacuum pump is a rotary variable-volume gas delivery pump, which vacuums the pumped containers by pumping air into them. It is widely used in pigment chemical industry, brick and tile machinery, low temperature equipment, papermaking machinery, pharmaceutical chemical industry, and food machinery. , Industrial electric furnace, electronics industry, vacuum equipment, chemical fertilizer, metallurgy, petroleum, mining, foundation treatment and other fields. [0003] A vacuum pump generally includes a fuel tank, a pump body set in the fuel tank and a motor driving the pump body. The pump body is equipped with a stator, a rotor and a rotary vane. The output shaft of the motor and the output shaft of the rotor are connected by a coupling. The principle of the vacuum pump is : When the rot...

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Problems solved by technology

[0005] An exhaust pipe is connected outside the exhaust port of the oil-gas separator, and the filtered air is exhausted from the exhaust pipe to the outside or collected in the gas collection container. In the actual work process, the equipment in the workshop is dense and the storage space is limited. In addition, various pipelines and lines are densely packed. Generally, there is only one exhaust port on the oil-gas separator, and the setting method is too simple. The external exhaust pipe can only be connected to the exhaust port of the oil-gas separator. Once the other end of the exhaust pipe The position changes. In order to avoid the gas transmission being affected by the folding of the exhaust pipe, the position of the vacuum pump needs to be adjusted. This requires more reserved space for the vacuum pump, which increases the occupied area of ​​the vacuum pump, and it is time-consuming and laborious to move the vacuum pump, which cannot meet the needs of the workshop. Flexible work needs

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