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How does the Roots water ring vacuum unit work?
The JZJS Roots water ring vacuum unit is based on the Roots pump and the water pump as the front stage pump. The Roots water ring vacuum unit uses a water ring pump as the foreline pump, which is more advantageous than other vacuum pumps. It overcomes the limit pressure difference when a single water ring pump is used (the ultimate pressure of the unit is greatly improved compared to the water ring pump). The disadvantage of low pumping rate under a certain pressure, while retaining the advantages that the Roots pump can work quickly and has a large pumping rate. In particular, it can be adapted to remove a large amount of condensable steam, especially when the gas ballast mechanical vacuum pump eliminates the condensable vapor capacity, or the solvent used can deteriorate the pump oil and affect the performance, or the vacuum system does not allow oil contamination. The time is more obvious. Leakage and micro-leakage look for small leaks and micro-leakage are more difficult to check. The common method is to use the ionization tube sensitive to certain gases to detect leaks under high vacuum conditions, such as acetone or ethanol, and suspicious with medical syringes. The place where the acetone or ethanol is sprayed, the pointer of the ionization gauge will swing significantly when it is sprayed to the leak point. To use this method to detect leaks, you must be patient. You must wait until the indication of the ionization gauge is stable--that is, the pumping capacity and leak rate of the vacuum unit are balanced, and then spray. Zui is good again and again, to confirm the leak. Leakage and leakage of leaks occur in equipment with water-cooled jackets. No leaks are found in the leaks, but there are the following phenomena: the pumping speed of the mechanical pump is obviously low, the vacuum gauge is low, and the mechanical pump oil is very Fast emulsification, iron-based parts in the vacuum chamber are obviously rusted. Judging the anti-caries performance of the material by detecting the change in the number of pinholes or the change in barrier properties before and after the test, it can provide a quantitative basis for the practical application of packaging design and materials. The anti-caries properties of the material will affect the stability of the barrier properties of the packaging material throughout the circulation process. If the barrier properties of the material barrier layer are poor due to poor resistance to warpage or tamper resistance, resulting in product deterioration, then for the packaging manufacturer. And the loss of the product manufacturer is huge.