Three-method Judgment Rule For Sanitary Rotary Vane Pumps

There are some common problems when using Sanitary Rotary Lobe Pump. Many users don't know how to judge. In fact, it is very simple. You can use touch test, auscultation and observation to judge it. Today, the editor will briefly introduce these three common methods:
When touching the sanitary rotary vane pump, you should try to touch it and then touch it carefully to estimate the temperature rise of the machine. You can feel the gap size of 0.1mm-0.3mm by shaking the machine with your hand. You can feel the change of vibration intensity and whether there is impact, as well as the crawling of the slide by touching the machine with your hand. Using a thermometer equipped with a surface thermocouple probe to measure the surface temperature of rolling bearings, sliding bearings, spindle boxes, motors and other parts has the characteristics of rapid judgment of thermal abnormality location, accurate data and convenient touch test process.

When the sanitary rotary vane pump is running normally, the accompanying sound always has a certain rhythm and rhythm. As long as you are familiar with and master these normal rhythms and rhythms, you can compare whether the equipment has heavy, miscellaneous, strange and chaotic abnormal noises through the human hearing function, and judge the hidden dangers of looseness, impact, imbalance and so on in the equipment. Hit the parts with a hammer and listen to whether there is any cracking noise to determine whether there is any crack. The electronic stethoscope is a vibration acceleration sensor. It converts the vibration condition of the equipment into an electrical signal and amplifies it. Workers use headphones to listen to the vibration sound of the running equipment to achieve qualitative measurement of the sound.

By measuring the signals of the sanitary rotary vane pump at the same measuring point, different periods, the same speed, and the same working conditions, and comparing them, it can be determined whether the equipment has a fault. When the earphone has a crisp and sharp noise, it means that the vibration frequency is high, generally, the parts with relatively small size and relatively high strength have local defects or tiny cracks. When the earphone emits a turbid and low noise, it means that the vibration frequency is low, generally, the parts with relatively large size and relatively low strength have large cracks or defects. When the noise from the earphone is stronger than usual, it means that the fault is developing, and the louder the sound, the more serious the fault. When the noise from the earphone is intermittent and irregular, it means that parts or components are loose.

Auscultation of sanitary rotary vane pumps can be done by aligning the tip of a screwdriver (or a metal rod) with the part to be diagnosed, holding the screwdriver handle with your hand, and listening carefully. This can filter out some noise. Temperature feel judgment training: Use a node thermometer to measure the metal surface at 50 degrees, 60 degrees, 70 degrees, and 80 degrees. For low temperatures, you can use traces to examine the time when your hand can touch it, and determine the temperature based on different times. When you can't touch it with your hands at higher temperatures, you can sprinkle a small amount of water to observe the evaporation state of the water, and then remember these states. When used in diagnostic equipment, you can get a more accurate judgment.

The magnetic plug method is a simple method to monitor the wear state by observing the wear particles collected from the lubricating oil of the sanitary rotary vane pump through instruments. Its principle is to insert a magnetic plug into the lubricating oil, collect the iron abrasive particles produced by wear, and use a reading microscope or directly use the human eye to observe the size, quantity and shape characteristics of the abrasive particles to determine the degree of wear on the surface of the mechanical parts. The magnetic plug method can be used to observe the situation where the abrasive particles are larger in the later stage of wear of mechanical parts. During observation, if small abrasive particles are found and the number is small, it means that the equipment is operating normally; if large abrasive particles are found, it should be taken seriously and the equipment operation status should be paid close attention; if large particles are found repeatedly, it is a precursor to an impending failure, and the machine should be stopped immediately for inspection, fault finding and elimination. The above is a very detailed description of the judgment of sanitary rotary vane pumps. These diagnostic methods require a long period of experience accumulation to make accurate judgments.