Dasheng oil-free low-pressure Air Compressor has more than ten years of experience in the industry, and its production and design of oil-free Air Compressors have passed various certifications such as the European Union and Germany, and the quality is guaranteed. DA7004 oil-free low-pressure Air Compressor is the one with higher power among its DA700 series low-pressure Air Compressors.
Dasheng DA7004 oil-free low-pressure Air Compressor is a laboratory Air Compressor equipped with 4 pump heads. It adopts pure oil-free design, and the output gas does not contain oil molecules, which is environmentally friendly and healthy. DA7004 oil-free low-pressure Air Compressor has a power of 3000w and a noise of 62dB. The noise reduction box (need to be purchased separately) can be used to reduce the noise up to 10dB and reduce noise pollution. The Air Compressor has the characteristics of automatic start and stop, simple maintenance, simple and convenient operation, and wide use, and is widely used in laboratories at home and abroad.




| 1. Air filter | 6. Filter regulator | 11. Gas tank pressure gauge | 16. Drain valve |
| 2. PU tube | 7. Gas storage tank | 12. Regulator valve pressure gauge | 17. Safety valve |
| 3. Compressor head | 8. Casters | 13. Pressure switch | 18. handle _ |
| 4. Shock absorbing column | 9. Discharge water pollution | 14. Elbow | 19. Power box |
| 5. Ball valve | 10. Nameplate | 15. Metal hose | 20. Big Thru |
Passed the ISO9001-2008 and ISO13485-2012 quality system certification of TUV, Germany. It is a national industrial product production license manufacturer approved by the General Administration of Quality Supervision, Inspection and Quarantine of CHINA has obtained EU industrial CE, EU medical CE certification, and the US Food and Drug Administration. Issued FDA certification.
1. Pure oil-free: pure oil-free design, the output gas does not contain oil molecules, no harm to the human body.
2. Ultra-quiet: low noise, stable output air pressure without fluctuation, reducing noise pollution.
3. Multi-stage filtration: multi-stage filtration of gas, cleaner and purer, prolonging the service life of the device.
4. Anti-rust by internal spraying: the air tank is finished by internal spraying to prevent the air from being polluted by rust.
5. Safe use: If the Voltage and current cause the machine to overheat, it will automatically stop for protection to avoid burning out.
6. Automatic start: intermittent use, the machine switch does not need to be restarted.
7. Adjustable air pressure: Adjustable air pressure to meet the needs of different equipment.
8. Durable: Use according to regulations and last more than 15,000 hours.
9. Easy to operate: It can be used when powered on.
10. Simple maintenance: no need to add lubricating oil, easy maintenance after purchase.
Dasheng low pressure Air Compressor is suitable for oral cavity, endoscopy, cleaning and medical equipment, pharmaceutical, food fermentation, life science, biotechnology, analytical instruments, measuring instruments, water treatment, laboratory, environmental monitoring, automation, coating surface treatment, beauty, clothing manufacturing, footwear, petrochemical, stage background, automobile braking and other industries.
The silent oil-free low-pressure Air Compressor belongs to the micro reciprocating piston Air Compressor, and the single-axis drive of the motor is a crank-rocker mechanism with a 180 ° distribution. The main motion pair is a leather bowl piston ring, and the paid motion pair is a cylindrical surface with a protective layer of aluminum alloy. There is no need to add any lubricant between the motion pairs due to the self-lubrication of the piston ring. The compressor makes the stroke volume of the cylinder change periodically through the swing of the crank-rocker and the reciprocating motion of the conjoined piston. Due to the single-axis double-cylinder structure, when the motor rotates once, each group of cylinders will have a change in the stroke volume of the cylinder in the opposite direction. When the piston travels to the shaft, the cylinder is under negative pressure. At this time, the atmospheric pressure is greater than the pressure in the cylinder. Air enters the cylinder through the intake valve. At this time, it is the suction process. When the piston travels to the cover, the gas entering the cylinder is compressed, and the pressure increases rapidly. When the pressure is greater than the pressure acting on the exhaust valve plate, the exhaust valve is opened. At this time, it is the exhaust process. The structure of the compressor's single-shaft double-cylinder makes the compressor's exhaust volume double that of the single cylinder. The crank-rocker mechanism with a wrong angle of 180 ° makes the first-order inertial force that affects the vibration of the compressor cancel each other, so that the vibration and noise are improved and the overall structure is more compact.
Principle of low pressure Air Compressor
Due to the reciprocating movement of the piston, the air enters the compressor through the filter, and then the air is compressed, so that the compressed gas enters the air storage tank from the exhaust port through the metal hose, and the pointer of the pressure gauge rises to 0.8 Mpa, when the pressure is greater than 0.8 Mpa, the pressure switch is automatically closed, the motor stops working, and at the same time, it is evacuated through the solenoid valve to reduce the pressure in the compressor cylinder to 0. At this time, the pressure of the gas in the air switch and the gas storage tank is still 0.8 Mpa. When the gas is exhausted through the ball valve, the pressure in the gas storage tank will drop. When it drops to 0.5 Mpa, the pressure switch will automatically open and the compressor will start again. Work.


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