Talking about the working principle, application range and maintenance of oil-free vacuum pump

Oil-free vacuum pump

Structural features

The oil-free piston type vacuum pump is a piston type vacuum pump. Taiwan's Loco Rocker series are piston-type vacuum pumps, which are used to remove the gas in the sealed container to obtain the basic equipment for vacuum.

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

This pump is not suitable for the removal of gases that are corrosive to ferrous metals, chemically reactive to pump oil, gases containing particulate dust, and toxic gases that are too high in oxygen and explosive. It cannot be used as a transfer pump (ie, pumping from one container to another).

Advantages and disadvantages

The oil-free vacuum pump is a mechanical vacuum pump that can operate without any oil lubrication. The utility model has the advantages of simple structure, easy operation, convenient maintenance and no pollution to the environment. The oil-free vacuum pump has good durability and is a vacuum, compression, dual-purpose vacuum pump. It is a basic equipment with a wide range of applications to obtain vacuum.

Compared with the oil pump, the oil-free vacuum pump has a low vacuum and a small pumping capacity, but is compact in size, easy to install, simple to maintain, easy to move, does not produce soot, and does not pollute the environment, especially in laboratories with higher requirements. It is also one of the most frequently equipped equipment in the laboratory.

Therefore, when purchasing an oil-free vacuum pump, first determine the degree of vacuum required to work. If the demand is high, the vacuum pump selected should be higher than the required vacuum. Otherwise, the vacuum requirement will not be met. Go to work requirements. The second is the pumping rate of the oil-free vacuum pump, which is slightly larger than the required pumping rate during the selection, so that it can better meet the needs. Finally, see if the extracted gas is corrosive, corrosive gas will corrode the pump, and special materials must be used to meet the demand.

working principle

Its working principle is the same as that of the general volumetric pump. It consists of main parts such as stator, rotor, rotary vane, cylinder and motor. The rotor with the rotary vane is eccentrically mounted in the fixed cylinder. When the rotor rotates at high speed, the four radial sliding vanes in the rotor slot divide the pump chamber into four working chambers. Due to the centrifugal force, the rotary vane is closely attached. The cylinder wall separates the stator inlet and outlet ports, and starts to operate again and again to change the volume. The inhaled gas is discharged from the exhaust port to achieve the purpose of pumping.

Scope of use

Oil-free vacuum pumps can be used in the following tasks:

1. The vacuum suction line on the automatic packaging line opens the bag and charges.

2. Paper vacuum on the printing machine.

3. High-efficiency vacuum filling of various liquids into the bottle.

4. Vacuum forming of various plastic products.

5. The airtightness test of the surface of the object under vacuum.

6, the carton and bottle items of the standard vacuum suction paste.

7. Photographic plate making under vacuum suction.

8. Guide the gas analysis using the pressure difference under vacuum.

9, a variety of medical machinery automatic online supporting use.

10. Vacuum chuck clamp for processing non-magnetic parts.

11. Leak test of various containers under vacuum.

12. Application on food processing machinery.

13. Chinese and Western pharmaceutical companies vacuum distillation and drying.

14. Vacuum suction in the operating room of the hospital.

15. Gas analysis, physical and chemical experiments in institutions, research institutes, factories and mines.

16. Supporting use of various medical instruments.

Use maintenance

1. It should have adequate ventilation conditions and an ambient temperature below 40 °C.

2. Clean place without dust and dirt.

3. Water, oil and other liquids will fall onto the pump.

4. Not directly exposed to the sun.

5, there is enough space to facilitate the inspection, maintenance and assembly of the pump.

6. The pump must be mounted on a flat surface.

7. It is best to install the pump on a concrete-like foundation. If there are no conditions, the pump can be firmly mounted on a steel or wooden frame.

8, must ensure that the pump does not cause vibration due to the foundation is not strong.

9. The pipe connected to the pump should not be too long and less than the inlet diameter of the pump, affecting the pumping speed. Also, check the vacuum connection pipe for leaks.

10. When connecting the wires, pay attention to the wiring requirements specified on the motor nameplate. The three-phase electric pump should pay attention to the direction of rotation of the motor should be consistent with the direction of the marked arrow on the pump.

For more details, please pay attention to

Taiwan Luoke Office Xiamen Luoken Instrument Co., Ltd.