In the vacuum generator system, in order to ensure the maximum vacuum degree of the vacuum suction port and maintain a certain vacuum degree in case of power failure, the connecting pipe between the vacuum generator and the vacuum adsorption fixture should be as short as possible, and a one-way valve can be set between the vacuum adsorption fixture and the vacuum generator.
The maximum vacuum degree of vacuum pump system can reach 101.3kPa, and the suction flow of vacuum can also be large. However, the problems of vacuum pump system are: complex mechanism, large volume, heavy weight, high price, inconvenient installation, maintenance, difficulty in compounding with accessories, pulsating vacuum pressure, slow vacuum generation and release, etc. The maximum vacuum degree of the vacuum sounder system can reach 84 kPa, and the suction flow of vacuum is not large. However, its advantages are simple structure, small volume, light weight, low price, convenient installation, no maintenance, simple compounding with accessories, no pulsation of vacuum pressure, fast generation and release of vacuum, etc. When the maximum vacuum degree of the vacuum suction port is low and the leakage rate of the vacuum adsorption fixture and the workpiece is less, the true value is used
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