Da Series Micro Oil Double Screw Type Air Compressor for Sale

• Customization: Available
• After-sales Service: Online Technical Support
• Warranty: 1 Year
• Model NO.: DA
• Cooling System: Air Cooling
• Power Source: DC Power
• Cylinder Position: Horizontal
• Structure Type: Closed Type
• Installation Type: Movable Type
• Type: Twin-Screw Compressor
• Working Pressure: 0.7MPa
• Air Deliver: 0.82
• Power: 5.5kw
• Weight: 315kg
• Specification: 900*600*860mm
• Trademark: shenzhou
• Origin: China
• Production Capacity: 2000 Sets/Year

Product Description

Product Description

An air compressor is a machine that increases the pressure of gas. There are many types of air compressors, and screw air compressors are the most popular type today.

Main structure

National patent rotor profile: ZL201720301-123.8, performance improvement of more than 15%; imported brand bearings to ensure service life; working temperature up to 110ºC for continuous operation.

It adopts the national new energy-efficient motor, high protection level IP54, F-level insulation level, B-level temperature rise assessment, and imported brand SKF bearings.

 

National design patent ZL201720512855.1,
Smaller pressure loss, better oil-gas separation effect, and oil content in outlet gas is less than 2ppm.

 

Enlarge the heat dissipation area, efficiently cool and avoid high temperature shutdown

Real-time detection of operating data and fault alarm function, reserved remote communication port, combined with cloud to achieve mobile terminal remote management.

 

Imported brand components fully guarantee the long life of the equipment.

Features

Starting Advantages
Frequency conversion soft start, smooth linear operation, no peak current of traditional direct start and Y-△ start, effectively prolonging the service life of the motor and electromagnetic contactor, while avoiding the risk of being fined by the power department for overload.

Stable Pressure
The variable frequency screw air compressor utilizes the variable frequency drive's stepless speed regulation point. Through the controller or the PID regulator inside the variable frequency drive, it can start smoothly and quickly adjust and respond to occasions with large fluctuations in gas consumption. Compared with the upper and lower limit switch control of power frequency operation, the gas pressure stability is improved exponentially.

Variable Flow Control
·The frequency converter adjusts the motor speed in real time according to the actual gas consumption to control the exhaust volume;
·When the gas consumption is low, the air compressor can be automatically put into sleep mode, thus greatly reducing energy loss; ·The optimized control strategy can further improve the energy saving effect.

Low Noise
·When running stably, the operating frequency is lower than the power frequency, the mechanical noise is reduced, and the mechanical wear is reduced;
·If the fan also adopts variable frequency drive, the noise of the air compressor during operation can be significantly reduced.

Product Parameters

	WorkingPesure	air deliver	power(kw)		Dimensions(mm)			weight	Diameter	starting Meth
					(L)	(W)	(H)
DA-5	0.7	0.82	5.5	380VIP54	900	600	860	315	R1/2	Belt Drive
	0.8	0.80
DA-7	0.7	1.18	7.5	380VIP54	900	600	860	315	R1/2
	0.8	1.09
	1.0	0.92
	1.25	0.73
DA-11	0.7	1.97	11	380VIP54	1050	650	900	410	R3/4
	0.8	1.76
	1.0	1.51
	1.25	1.13
DA-15	0.7	2.60	15	380VIP54	1100	650	920	453	R3/4	Direct Driven
	0.8	2.51
	1.0	2.04
	1.25	1.91
DA-18	0.7	3.21	18.5	380VIP54	1300	800	1050	485	R1
	0.8	3.11
	1.0	3.00
	1.25	2.34
DA-22	0.7	3.59	22	380VIP54	1300	800	1050	510	R1
	0.8	3.55
	1.0	3.08
	1.25	2.97
DA-30	0.7	5.28	30	380VIP54	1400	900	1200	682	R1-1/2
	0.8	5.26
	1.0	5.21
	1.25	3.45
DA-37	0.7	5.54	37	380VIP54	1400	900	1200	700	R1-1/2
	0.8	5.52
	1.0	5.35
	1.25	5.16
DA-45	0.7	.67	45	380VIP54	1500	960	1200	729	R1-1/2
	0.8	7.62
	1.0	6.46
	1.25	5.41
DA-55	0.7	10.50	55	380VIP54	1800	1200	1400	1310	Rp2
	0.8	10.00
	1.0	8.45
	1.25	7.56
DA-75	0.7	4.21	75	380VIP54	1800	1200	1400	1325	Rp2
	0.8	3.00
	1.0	0.54
	1.25	9.23
DA-90(W)	0.7	7.27	90	380VIP54	2450	1800	1700	2450	DN80
	0.8	16.93
		2.22
	1.25	12.11

How could two stages compressing compressors be more energy saving than single stage compressing ones?

According to the working principle of the compressor, isothermal compression is relatively power-saving. The power diagram of the compression process, curve 12'3' is the isothermal compression process, and the area 613'4 formed with the ordinate is the indicated work of the isothermal compression. Curve 123" is the one-stage compression process, and the area 613"4 formed with the ordinate is the indicated work of the one-stage compression. Curves 12, 22', 2'3 are the two-stage compression process, and the sum of the areas 6125 and 52'34 (6122'34) formed with the ordinate is the indicated work of the two-stage compression. It can be seen from the diagram that the isothermal compression process 613'4 area (indicated work) is the smallest, but isothermal compression cannot be achieved in the actual compression process of the compressor. One-stage compression has an additional power of 13'3" area compared to isothermal compression, while two-stage compression saves 2'23"3 area power compared to one-stage compression.

Two Stages Compressing Process
Natural air enters the first stage of compression through the air filter, mixes with a small amount of lubricating oil in the compression chamber, and compresses the mixed gas to the interstage pressure. The compressed gas enters the cooling channel and contacts with a large amount of oil mist, which greatly reduces the temperature. The compressed gas after cooling enters the second stage rotor for secondary compression and is compressed to the final exhaust pressure. Finally, it is discharged from the compressor through the exhaust valve, completing the entire compression process.

Two Stages Compressing Screw Air End
The fluid position isothermal curve design improves the proportional compression performance of the exhaust port, multi-point injection, multi-oil interstage cooling, ultra-precision micron-level rotor tooth shape, meshing profile to maintain the optimal gap value, and improves the insulation efficiency by more than 18%. Large rotor, large flow, low-load and long-life bearings, design life ≥ 100,000 hours.
 

Main application