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SONYAN DRV Series Vacuum Pump

The DRV series pumps are compact, low noise, two-stage, oil-sealed, high-vacuum pumps designed for reliable, long-term operation in both laboratory and industrial environments. A four-pole three-phase motor provides direct-drive through a flexible coupling.
  • DRV Series

  • SONYAN

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Description

The DRV series pumps are compact, low noise, two-stage, oil-sealed, high-vacuum pumps designed for reliable, long-term operation in both laboratory and industrial environments. A four-pole three-phase motor provides direct-drive through a flexible coupling.

The pump body is easy to disassemble without special tools.

The pump cavity is divided into several spaces by a rotor eccentrically installed in the pump cylinder and two rotary vanes in the rotor groove, and the volume of each space changes periodically with the rotation of the rotor. When the rotor drives the vanes to rotate, the rotary vane sticks to the cavity wall by centrifugal force and the elastic force of the air spring, separates the intake and exhaust ports, and makes the volume of the intake cavity periodically expand and inhale, and the volume of the exhaust cavity is Periodically shrink and compress the gas, and use the compressed gas pressure and oil to push the exhaust valve plate to exhaust, thereby obtaining a vacuum.

The pump is equipped with a gas ballast valve. Its function is to fill a certain amount of air into the exhaust cavity to reduce the partial pressure of vapor in the exhaust pressure. When it is lower than the saturated vapor pressure at the pump temperature, it can be discharged out of the pump with the charged air to avoid condensation in the pump oil. It can prolong the service time of the pump oil.

The pump has the advantages of high speed, low noise, compact structure and convenient starting. In addition, this product has the following features;

1)Springless rotary vane.

Avoid pump shutdowns caused by broken springs.

2)Forced lubrication pump system.

3)Hydraulic oil anti-sucking system.

If the power fails or the pump is stopped for a long time without venting the inlet side to atmospheric pressure, the pump oil will flow back to the cylinder, making restart difficult. This pump is equipped with the oil anti-sucking feature to minimize the amount of oil flowing back to the cylinder and to reduce the load, pump can restart easily.

4)Variable oil level system.

This pump has a wide oil level indicating range to allow easy control of oil level. The pump is operable if the oil level is between the two-level lines of the oil level gauge during operation.


Application

This pump is a variable-capacity gas transmission vacuum pump, which is one of the most basic vacuum obtaining equipment in vacuum technology. Its working pressure range is from atmospheric pressure to pump ultimate pressure, and it is a low vacuum pump. It is suitable for extracting dry gas or gas containing a small amount of condensable vapor in airtight containers. When the gas contains condensable steam, the gas ballast valve needs to be opened. The pump can be used alone or as the backing pump and pre-pumping pump of various molecular pumps, diffusion pumps, roots pumps and other high vacuum and ultra-high vacuum systems, and widely applied in medicine, scientific research, laboratory, chemical industry, light industry, metallurgy, petroleum, machinery, electronics and other industries, as well as electric vacuum device manufacturing, light bulb, thermos manufacturing, vacuum welding, vacuum casting, instrumentation and refrigeration equipment, printing packaging machinery and so on.

The working environment of the pump;

The temperature is in the range of 5℃~40℃.

The relative humidity is not more than 80%RH (no condensation). When the relative humidity of the gas is greater than 80%RH, the gas ballast valve should be opened.

If inlet pressure is less than 10 Torr (about 1300Pa), long-term continuous operation is allowed.

The pump is not suitable for pumping gas with high oxygen content, explosiveness, corrosiveness to metal, chemical reaction with pump oil, and particulate dust.

This pump should not be used as a compression pump or delivery pump.


Technical Data

Model

DRV24

DRV30

DRV40

DRV60

DRV90

Pumping Speed m3/h

50Hz

22

30

40

60

90

60Hz

26

35

48

70

108

Ultimate Pressure Pa

GB Closed

≤0.5

GB Opened

≤4

Motor Power kW

380V(3P)

0.75

1.1

1.5

2.2

2.2

220V(1P)

0.75

1.1

1.5

2.2

/

Oil Capacity L

1.7

1.9

2.1

5

5.5

Inlet DN

KF25/KF40 (Optional)

KF25/KF40 (Optional)

KF25/KF40 (Optional)

KF40

KF40

Outlet DN

KF25

KF40

KF40

KF40

KF40

Noise(GBClosed) dB

63

63

63

65

65

Weight(3p) kg

~38

~43

~50

~81

~85


Note:

1. The ultimate pressure is the value indicated on the Pirani gauge when the standard oil is used. The ultimate pressure, when the Mcleod gauge is used is approx., is one digit lower than the value indicated on the Pirani gauge.

2. The type of rotary pump oil differs depending on vapor pressure, viscosity, etc. The use of a wrong type of oil can lower the pump performance. So, use the pump oil recommended SONYAN.


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Beijing Songyuan Huaxing Technology Development Co., Ltd. was founded in 2000, with its headquarters located in Beijing, China.

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