The Features and Maintenance of Diaphragm Vacuum Pumps

A diaphragm vacuum pump is a kind of oilless vacuum pumps. Diaphragm refers to the working principle and structure; vacuum refers to the performance and function of the pump. When a diaphragm vacuum pump is in abnormal condition, make sure to disconnect the power first. Otherwise, do not remove any parts of the pump. Wait for the pump to cool down.

Hawach diaphragm vacuum pump can run continuously without oil, low noise, high working efficiency, long service life, safe and reliable, easy to use, which is the ideal product for matching with high precision chromatographic instruments, rotary evaporators and so on. A diaphragm vacuum pump is mainly used in drug analysis, fine chemicals, biopharmaceuticals, food inspection, public security criminal investigation and analysis, and other fields.

SLVPGM050B-Standard-Diaphragm-Vaccum-Pumps SLVPGM050B-T-Anti-Corrosion Diaphragm Vacuum-Pump

The features of a diaphragm vacuum pump

1. No working medium, no pollution;
2. Easy to move, smooth work, high air flow rate;
3. No friction, corrosion resistance, long life;
4. It can operate continuously for 24 hours.
5. Without any working medium, no oil and pollution, ensuring the purity of the air.
6. New technology and new materials, convenient to move and works smoothly, ensuring ideal vacuum degree and high air flow rate.
7. Frictionless membrane body movement, no heat generated and no friction loss.
8. The diaphragm of a diaphragm vacuum pump is made of imported rubber, corrosion resistant and long service life.
9. Self-cooling exhaust system can ensure 24-hour continuous operation.
10. Imported classic bearing, stable running, low noise and high working efficiency.

The maintenance of a diaphragm vacuum pump

In order to ensure excellent performance and longer service life, there are certain inspection and maintenance for the diaphragm vacuum pump that needs to be well observed and performed periodically.

The quality of a vacuum pump depends on its mechanical structure and the quality of the oil. It must be protected when using a vacuum pump. If the organic solvent with high volatility is distilled, the organic solvent will increase the vapor pressure by the oil absorption, thereby reducing the pumping efficiency. The acid gas, if it is will corrode the oil pump. If it is water vapor, it will make the oil into an emulsion and bring damage to the vacuum pump.

1. Disconnect the power supply;
2. Release the pressure;
3. Filtration materials are particularly prone to dirt in dirty environments.

Before the start of any operation, it is necessary for the workers to examine the wiring connections considering personal safety. Under normal circumstances, the pressure knob should remain in a tightened state when the vacuum pump is running.

Decompression operation should be only conducted on certain occasions. If the voltage is unstable, remember to reduce the pressure continuously while observing the pressure change. Never clean the diaphragm vacuum pump with organic compounds, acids, corrosive and flammable solvents. Do not lubricate any part of the pump, otherwise, it will shorten its service life.

Daily Inspection

First of all, the diaphragm vacuum pump must be placed in a dry, clean and well-ventilated area all the time. Also, it is better to coil the wire around the pump when it is not used. In case that a low airflow rate, overheating situation or excessive noise would show up because of the dirty filter material, it is quite essential to check the filter material regularly.

Matters needing the attention of a diaphragm vacuum pump

Therefore, the following points must be paid attention to when using a vacuum pump:
1. An absorption device must be installed between the distillation system and the vacuum pump.
2. The steam of the organic solvent in the system must be completely removed by a water pump before distillation.
3. If you can pump with a water pump, try to use a water pump. If the distilled material contains volatile substances, you can use a water pump to depressurize and then use the oil pump.
4. The pressure relief system must be kept airtight. All rubber stoppers should be of suitable size. 5. The rubber hose should be vacuum hose. The ground glass is coated with vacuum grease.
5. Before use, check whether the suction filter bottle is well connected
6. The instrument shall not be used continuously for more than 30 minutes because it is easy to generate heat after long use.

Application of a diaphragm vacuum pump

1. Vacuum filtration;
2. Solvent filtration;
3. Vacuum distillation;
4. Vacuum drying;
5. Compatible with rotary evaporators;
6. Used for gas compression and conversion;
7. Colloidal drying