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Overview of rotary vane vacuum pump
Roots vacuum pump is a rotary variable volume vacuum pump. It is evolved from roots blower. It is to use two "8" shaped rotors to make synchronous reverse rotation in the pump housing to complete suction and exhaust. According to the different working range of Roots vacuum pump, it can be divided into low vacuum Roots pump with direct discharge to the atmosphere; Medium vacuum roots pump (also known as mechanical booster pump) and high vacuum multistage roots pump. Generally speaking, Roots pump has the following characteristics: it has a large pumping speed in a wide pressure range; Fast start and can work immediately; Not sensitive to dust and water vapor contained in the extracted gas; The rotor does not need to be lubricated, and there is no oil in the pump cavity; Low vibration, good rotor dynamic balance condition, equipped with exhaust valve; Low driving power and mechanical friction loss; Compact structure and small floor area; Low operation and maintenance costs.
Main features：
◆In a wide pressure range (1-1 × 105Pa) has a large pumping speed.
◆There is no oil in the pump chamber, which prevents oil vapor from polluting the vacuum system.
◆Low vibration, low noise.
◆The mechanical friction loss is small, so the drive power is small.
◆Easy to maintain and repair, low cost and long service life.
◆The condensable gas can be removed.
◆It cannot be used alone, and the front pump must be equipped. It is not allowed to start under atmospheric pressure. It can only be started when the inlet pressure of the Roots pump is pumped to the allowable inlet pressure by the previous stage pump. The front stage pump generally adopts liquid ring pump or oil seal mechanical pump.
◆In view of the characteristics of extracting water vapor and organic solvent, improvements have been made to solve the problem of emulsification of bearing cavity oil.
Application area
Roots vacuum pump is widely used in smelting, degassing and rolling in vacuum metallurgy, as well as vacuum distillation, vacuum concentration and vacuum drying in chemical, food and pharmaceutical industries. In view of the process of extracting a large amount of water vapor and solvent in chemical, pharmaceutical and other industries, our company has improved the sealing structure of the pump cavity and bearing cavity of the ZJ series Roots vacuum pump, greatly reducing the emulsification of oil in the bearing cavity and gear cavity, It makes ZJ series Roots vacuum pump more suitable to cooperate with water ring vacuum pump to extract a large amount of water vapor and solvent.
Overview of rotary vane vacuum pump
Roots vacuum pump is a rotary variable volume vacuum pump. It is evolved from roots blower. It is to use two "8" shaped rotors to make synchronous reverse rotation in the pump housing to complete suction and exhaust. According to the different working range of Roots vacuum pump, it can be divided into low vacuum Roots pump with direct discharge to the atmosphere; Medium vacuum roots pump (also known as mechanical booster pump) and high vacuum multistage roots pump. Generally speaking, Roots pump has the following characteristics: it has a large pumping speed in a wide pressure range; Fast start and can work immediately; Not sensitive to dust and water vapor contained in the extracted gas; The rotor does not need to be lubricated, and there is no oil in the pump cavity; Low vibration, good rotor dynamic balance condition, equipped with exhaust valve; Low driving power and mechanical friction loss; Compact structure and small floor area; Low operation and maintenance costs.
Main features：
◆In a wide pressure range (1-1 × 105Pa) has a large pumping speed.
◆There is no oil in the pump chamber, which prevents oil vapor from polluting the vacuum system.
◆Low vibration, low noise.
◆The mechanical friction loss is small, so the drive power is small.
◆Easy to maintain and repair, low cost and long service life.
◆The condensable gas can be removed.
◆It cannot be used alone, and the front pump must be equipped. It is not allowed to start under atmospheric pressure. It can only be started when the inlet pressure of the Roots pump is pumped to the allowable inlet pressure by the previous stage pump. The front stage pump generally adopts liquid ring pump or oil seal mechanical pump.
◆In view of the characteristics of extracting water vapor and organic solvent, improvements have been made to solve the problem of emulsification of bearing cavity oil.
Application area
Roots vacuum pump is widely used in smelting, degassing and rolling in vacuum metallurgy, as well as vacuum distillation, vacuum concentration and vacuum drying in chemical, food and pharmaceutical industries. In view of the process of extracting a large amount of water vapor and solvent in chemical, pharmaceutical and other industries, our company has improved the sealing structure of the pump cavity and bearing cavity of the ZJ series Roots vacuum pump, greatly reducing the emulsification of oil in the bearing cavity and gear cavity, It makes ZJ series Roots vacuum pump more suitable to cooperate with water ring vacuum pump to extract a large amount of water vapor and solvent.
