Oil free vacuum pump is a kind of mechanical vacuum pump which can work without any oil. It has the advantages of simple structure, simple operation, convenient protection and no pollution to the environment. The oil-free vacuum pump has good durability. It is a vacuum pumping, contraction and dual-purpose vacuum pump. It is a basic equipment with a very wide range of applications to obtain vacuum. Compared with the oil pump, the oil-free vacuum pump has the advantages of low vacuum degree, small air volume, compact volume, easy installation, simple protection, convenient movement, no oil smoke and environmental pollution, especially in the laboratory with high requirements. It is also one of the most common equipment in the laboratory.
Its working principle is the same as that of general positive displacement pump, which is composed of stator, rotor, rotor, cylinder block, motor and other primary parts. For the rotor with rotating disc, the eccentric intestinal device is located in the fixed cylinder. When the rotor rotates at high speed, four radial sliding rotating discs in the rotor groove divide the pump cavity into four operating rooms. Because of the centrifugal force effect, the rotating disc clings to the cylinder wall, separates the inlet and outlet of the stator, operates in a cyclic manner, changes the volume, exhausts the gas from the exhaust port, and then reaches the air extraction intention.
Therefore, when purchasing oil-free vacuum pump, the vacuum degree required for operation shall be confirmed first. If the required vacuum degree is high, the selected vacuum pump shall be higher than the required vacuum degree, otherwise, the requirements for vacuum pumping will not be met, and the operation requirements will not be met. Secondly, the pumping rate of oil-free vacuum pump should be slightly higher than the required pumping rate in the selection, so as to better meet the needs. Finally, it depends on whether the extracted gas is corrosive or not. If the corrosive gas understands the corrosive pump, it is necessary to use special raw materials to satisfy the demand.
Its working principle is the same as that of general positive displacement pump, which is composed of stator, rotor, rotor, cylinder block, motor and other primary parts. For the rotor with rotating disc, the eccentric intestinal device is located in the fixed cylinder. When the rotor rotates at high speed, four radial sliding rotating discs in the rotor groove divide the pump cavity into four operating rooms. Because of the centrifugal force effect, the rotating disc clings to the cylinder wall, separates the inlet and outlet of the stator, operates in a cyclic manner, changes the volume, exhausts the gas from the exhaust port, and then reaches the air extraction intention.
oil free vacuum pump application:
1. Oil free vacuum pump is very important in the automatic packaging line. In the process of vacuum packaging, the oil-free vacuum pump can vacuum pull the bags and load them.
2. On the printing machine, the oil-free vacuum pump can vacuum feed the paper.
3. In the field of plastic manufacturing and production, various plastic products can be vacuum molded by oil-free vacuum pump.
4. In the process of experimental analysis, we can use the pressure difference of oil-free vacuum pump in vacuum state to carry out gas analysis experiment.
5. When the air tightness test and leakage test are needed for the equipment sample, the oil-free vacuum pump can provide a vacuum environment to achieve the test purpose.
6. The oil-free vacuum pump can be tested with a variety of equipment, for example, it can be used in a variety of automatic medical machinery lines.
7. The oil-free vacuum pump can be used in industrial automation, such as the application machinery of the automatic vending machine.
8. Vacuum packaging is to extract all the air in the container and seal it, to keep the bag in a high pressure reducing state, and to make the air scarce is equivalent to the effect of low oxygen, so that the microorganism has no living conditions to achieve the purpose of fresh fruit and no disease and rot. Oil free vacuum pump is widely used in milking, food packaging, food and beverage processing and production.
Operation and maintenance methods of oil-free vacuum pump:
1. It shall have good ventilation conditions and ambient temperature lower than 40 ℃.
2. Clean the place without dust and stolen goods.
3. No water, oil and other liquid will fall on the pump.
4. Not directly exposed to the sun.
5. There is enough surrounding space to facilitate the inspection, maintenance, assembly and disassembly of the pump.
6. The pump must be installed on a flat surface.
7. It is better to install the pump on a hard foundation similar to concrete. If there is no condition, the pump can also be firmly installed on a steel or wooden frame.
8. It must be ensured that the pump will not vibrate due to the weak foundation.
9. The connecting pipe with the pump should not be too long or less than the inlet diameter of the pump, which affects the pumping speed. In the same way, pay attention to check whether the vacuum connecting pipe leaks.
10. When connecting wires, pay attention to the specified wiring requirements on the motor nameplate. For three-phase electric pump, the rotation direction of motor shall be consistent with the arrow direction marked on the pump.
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