Vacuum pumps are crucial technology in modern industry and scientific fields, used to create and maintain a vacuum environment to support various processes and applications. Understanding the different types of vacuum pumps and their characteristics is essential for choosing the most suitable pump for your needs. In this article, we will explore various common types of vacuum pumps and their characteristics and applications.
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Type
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Characteristics
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Application
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Operating vacuum degree
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Liquid Ring Vacuum Pump
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Liquid ring vacuum pumps use liquid (usually water) as a sealing agent to expel gas through rotational motion and centrifugal force. They exhibit good corrosion resistance and adsorption capacity.
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Used primarily in applications involving wet or dusty gases, such as the chemical, petroleum, and pharmaceutical industries.
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760 Torr
to
25 Torr
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Oil Ring Vacuum Pump
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Oil ring vacuum pumps utilize oil or other liquid forms to seal while expelling gas, offering stability and reliability.
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Mainly employed in applications requiring medium to low vacuum levels with high pump performance demands, such as plastic molding and automotive industries.
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200 Torr
to
3 Torr
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Rotary Vane Vacuum Pump
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Rotary vane vacuum pumps are a common mechanical type that utilizes rotary motion to intake and exhaust gas. They feature simple structure, stable operation, and are suitable for medium to low vacuum applications.
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Commonly found in vacuum extraction and vacuum packaging in laboratories, light industry, and small manufacturing facilities.
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160 Torr
to
0.3 Torr
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Dry Rotary Vane Vacuum Pump
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Dry rotary vane vacuum pumps do not require the use of oil or other lubricants, thus avoiding contamination and environmental safety issues.
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Frequently used in clean and non-contaminating applications, such as laboratories or the printing industry.
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760 Torr
to
310 Torr
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Mechanical Booster Vacuum Pump
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By combining with either liquid ring vacuum pumps or oil rotary vacuum pumps according to different usage conditions, the working range can be extended to medium to high vacuum levels, significantly increasing exhaust speed.
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Suitable for applications requiring medium to high vacuum levels.
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40Torr
to
10-4 Torr
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Dry Screw Vacuum Pump
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Dry screw vacuum pumps adopt a screw structure and require no lubricant, resulting in low maintenance costs and high efficiency.
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Applicable to applications requiring high vacuum levels and cleanliness, such as semiconductor manufacturing and optical thin film deposition.
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0.1 Torr
to
10-3 Torr
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The above are the six common types of vacuum pumps, each with its unique features and suitable environments. They can also be integrated with other related components to form a vacuum system (such as pairing with mechanical booster pumps or air ejectors) to achieve better vacuum levels and larger exhaust capacity. Please carefully consider various factors according to your application requirements and manufacturing needs to ensure the selection of the most suitable pump. If you need further guidance or consultation, please feel free to contact our professional team, and we will be happy to provide support and assistance.
