A vibration protection method for a centrifuge

Abstract

The invention discloses a vibration protecting method of a centrifuge. The vibration protecting method is characterized in that a vibration measuring sensor and an alarm device which are electrically connected to a control device are arranged on a centrifuge shell, and the control device differently controls the main motor of the centrifuge according to the measuring values of the sensor; in the whole washing and liquid removing process, if the vibration speed Fr measured by the vibration measuring sensor is smaller than 25mm / s, the centrifuge runs according to a set program; during feeding, if the vibration speed Fr measured by the vibration measuring sensor is not smaller than 25mm / s, feeding is shut down, the control device controls the operation frequency of the main motor to lower 5-10Hz, the alarm device is started, and the centrifuge enters a state waiting for manual intervention; during material fullness and speed increasing, according to detected vibration speed, the motor and a feeding device are controlled in corresponding states so as to reduce vibration or manual intervention is performed; during washing and liquid removing, if the vibration speed Fr is not smaller than 35mm / s, the alarm device is started, and a manual intervention mode is started.

Description

technical field [0001] The invention relates to a vibration protection method for a centrifuge. Background technique [0002] Such as figure 1 As shown, the normal startup and operation of the centrifuge generally includes: 1. Increase the speed of the drum to the feeding speed, 2. Maintain the speed of feeding, 3. Increase the speed to the dehydration speed, 4. Perform dehydration, washing, and dehydration, 5. Slow down to the scraping speed, 6. Scraping, 7. The process of pulling the bag. [0003] The vibration problem of the centrifuge is the key problem in the use of the centrifuge. If the vibration is too large, it will cause great damage to the centrifuge. Spindle broken. The vibration of the centrifuge is mainly caused by the uneven distribution of materials in the drum. The vibration of the centrifuge is required to be controlled at a vibration speed Fr<25mm / s. When this value is exceeded, the vibration problem needs to be dealt with. However, the existing met...

AI Technical Summary

Problems solved by technology

The vibration of the centrifuge is required to be controlled at a vibration speed Fr<25mm / s. When this value is exceeded, the vibration problem needs to be dealt with. However, the existing methods often exceed a certain set limit value and stop directly, but this will make the All the filter residue with filtrate in the centrifuge enters the filter residue outlet, so that all the filter residue has to be treated separately, which is very cumbersome, and some filtrate will cause corrosion to the parts of the slag outlet

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