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No leakage of the main pump technology: 1, the rotor axial force adjustment and balance 2, cooling and lubrication measures 3, shielding sleeve, isolation sleeve and the gap 4, bearing and thrust plate 5, the magnetic rotor 6, status monitoring According to the transmission medium, different working conditions, shielding pump cycle there are three main ways: 1, positive cycle 2, reverse cycle 3, outside the loop This article key times: pump