oil free vacuum pump

What is an oil-free vacuum pump：

The oil free vacuum pump is a mechanical vacuum pump which can run without any oil lubrication.

Oil-free vacuum pumps of advantages and disadvantages :

The utility model has the advantages of simple structure, easy operation, convenient maintenance, and no pollution to the environment. Oil-free vacuum pump has good durability, is a vacuum pumping, compression, dual-purpose vacuum pump, is a very wide range of applications to obtain vacuum basic equipment.

Compared with the oil pump, the oil-free vacuum pump has low vacuum degree and small air extraction capacity, but it is compact, easy to install, easy to maintain, easy to move, no fumes, no pollution to the environment, especially in the laboratory with higher requirements. It is also one of the most permanent equipment in the laboratory.

Therefore, in the purchase of oil-free vacuum pump to determine the requirements of the vacuum, if the demand is high, and the choice of vacuum pump will be higher than the demand of the vacuum, otherwise can not meet the requirements of vacuum, will not meet the work requirements. Secondly, the pumping rate of oil-free vacuum pump is slightly higher than the required pumping rate, so that it can better meet the needs. Finally, see whether the extracted gas is corrosive, corrosive gas will corrode the pump, must use special materials to meet the needs.

EVP Series Dry Scroll Vacuum Pump

Oil-free vacuum pump working principle:

Its working principle is the same as the general volume pump, by the stator, rotor, rotary blade, cylinder block, motor and other major parts. When the rotor rotates at a high speed, the four radial sliding vanes in the rotor groove divide the pump chamber into four chambers. Due to centrifugal force, the vane clings to the cylinder wall, separating the stator inlet and outlet, and starting to run again and again, changing the volume, sucking in the gas from the exhaust. The gas outlet is discharged to achieve the purpose of pumping.

Oil-free vacuum pump technical parameters:

Model			EVP1000	EVP600		EVP300		EVP150		EVP75
Displacement	50Hz	l/s	16.6	8.7		4.3		2.0		1.0
			l/min	996	522		258		120		60
			m3/h	59.8	31.3		15.5		7.2		3.6
			cfm	35.8	18.7		9.3		4.3		2.2
		60Hz	l/s	19.9	10.4		5.1		2.4		1.2
			l/min	1194	624		306		144		72
			m3/h	71.6	37.4		18.3		8.6		4.32
			cfm	42.8	22.3		10.9		5.1		2.5
Ultimate pressure		Pa	≦1.0	≦1.0		≦2.6		≦8.0		≦8.0
		torr	≦7.5×10-3	≦7.5×10-3		≦1.9×10-2		≦6.0×10-2		≦6.0×10-2
		mbar	≦1.0×10-2	≦1.0×10-2		≦2.6×10-2		≦8.0×10-2		≦8.0×10-2
		psi	≦1.4×10-4	≦1.4×10-4		≦3.8×10-4		≦1.2×10-3		≦1.2×10-3
Leakage with outlet & air flush port off			1×10-2Pa·l/s（1×10-4mbar· l/s）
Max. inlet /outlet pressure		mpa	0.1 /0.13
Ambient Temperature		℃/℉	5～40 / 41～104
Max. moisture disposal capacity		G/h	60	60		60		50		50
Motor	Power	kw/hp	1.50/2.00	0.75/1.00		0.55/0.74		0.25/0.30		0.25/0.3
	Voltage	VAC	380/220	380/220	220	380/220	220	380/220	220	380/220	220
	Speed	rpm	1410							1425
Noise level		dB(A)	≦63	≦63		≦63		≦57		≦54
Inlet/outlet diameter		mm	KF40/16×2	KF40/16		KF25/16		KF25/16		KF25/16
External dimension		mm	548×359×397	487×316×360		457×290×336		416×245×277		405×225×260
Weight		kg	52	36		32		18		15
Cooling type		/	Air cooled
Others		/	With timer & air ballast

 

Oil-free vacuum pump application range:

The pump can be used for air conditioning, refrigeration equipment repair, medical equipment suction device, printing machinery, vacuum packaging, vacuum plastic suction, physical and chemical experiments and small devices requiring vacuum environment and other vacuum operations. It can also be used as a pre pump for small oil booster pumps, oil diffusion pumps, molecular pumps, etc.

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