Vacuum pump is the main force of many science and technology, and provides necessary conditions for the operation of many laboratory application equipment. Unfortunately, if the pump is exposed to acid or organic chemical fumes for a long time, it will cause some practical maintenance problems. Especially for the oil sealed rotary vane pump, exposing the oil to chemical steam will lead to oil deterioration or decomposition, which will affect the function of the oil mist separator of the vacuum pump. Many applications require a high degree of vacuum, so vane pumps are required. These high vacuum pumps are essential for installing the vacuum pump oil mist separator. 1: Read the instruction manual carefully After purchasing the pump, carefully read the manual, check the operation precautions, select the appropriate vacuum pump oil according to the suggestions in the manual, and select the vacuum pump oil fume filter according to the pump model. The manual usually recommends the time of oil change. 2: Warm up the pump Run the pump for 20-30 minutes before connecting it to the vacuum system. Consider installing manual valves to facilitate the preheating process. 3: Do not block the pump outlet The pump outlet is blocked, which will cause the pump to stop working. In the worst case, overpressure in the pump may loosen the seal around the oil mirror glass, resulting in leakage and maintenance. Install the vacuum pump oil mist separator to make the air flow more stable. 4: The inlet cold trap is used to protect the pump from corrosive steam The cold trap at the inlet can not only protect the pump from corrosive steam, but also reduce the steam load on the pump, so it can work more effectively. Ensure that the temperature of the solvent is low enough, such as using liquid nitrogen (for highly volatile solvents). 5: When handling condensable vapors, use gas ballasts The air ballast of the vacuum pump uses air to push the condensate to the outlet through the pump. For applications with high steam load and corrosive gas, the mixing pump (diaphragm pump / rotating blade combination) will maintain the vacuum state of the oil storage tank and continuously distill steam and corrosive gas from the pump oil, so as to reduce corrosion and greatly prolong the service life of the pump. The oil change cycle also extends the replacement cycle of the vacuum pump oil mist separator. 6: Use an air inlet filter to protect the pump from particulate contamination Use the air inlet filter to remove abrasive particles from the pump oil and rotating equipment. Reduce the pump oil pollution caused by impurities, and cooperate with the oil fume filter of the vacuum pump to effectively improve the performance of the vacuum pump. 7: Run the pump after use to remove the solvent from the oil After completing the operation, you need to open the air ballast, close the air inlet and let the pump run for a few minutes. By operating the pump near the maximum vacuum but with good air circulation, many solvents dissolved in the oil can be removed, thereby reducing internal corrosion during shutdown. Liquid Ring Vacuum Pump Used in Block Moulding Machine in EPS Production

Leakage detection must be carried out before screw vacuum pump is put into operation. If the operation is not correct, the vacuum pump will be damaged. The following points shall be considered when detecting leakage: First, it is necessary to find out whether the test piece can bear positive pressure and how much pressure it can bear, so as to determine whether the extraction leakage test method and the gas that can be filled with pressure can be used. Before detecting the leakage of screw vacuum pump, the weld shall be carefully cleaned to remove welding slag, oil stain and dust. The light at the leak detection part shall be sufficient, the bottom of the sink shall be dark, the water shall be clean and transparent, and there shall be no steam and fog on the water surface. The test piece shall be inflated first and then put into water. Otherwise, if there is a large leak, water may enter the container under inspection and the small hole may be blocked by water. Before putting them into the water, please use the monitoring method to check whether there is a large leakage, and then put them into the water after eliminating the large leakage, otherwise it will affect the detection of small leakage. When the screw vacuum pump specimen is placed in water, bubbles may appear on the surface of the specimen. If these bubbles are erased or punctured and the bubbles no longer appear, it can be judged that there is no leakage. Where bubbles are initially generated. If bubbles appear regularly and continuously, there will be leakage where bubbles are generated. The inspected part shall be kept stable in the water and observed after the water surface is flat. The inspection position of screw vacuum pump shall be as close to the water surface as possible. If any leakage is found, mark it in time. If there is a large leak, check the small leak after repair. In short, the screw vacuum pump can only be put into use after passing the leakage detection; Otherwise, unnecessary damage will be caused for future use. Vacuum Pump Heat Treatment Guide,Heat Treatment Equipment Liquid Ring Vacuum Pump