Slurry pump with alarm function for excessive wear of wetted parts

Abstract

The invention discloses a slurry pump with an overflowing part excessive wear alarming function. The slurry pump with the overflowing part excessive wear alarming function comprises a main shaft, a sealing device, a spiral casing, a front protective plate, a protective cover, a rear protective plate and a wear alarming device which performs thickness real-time detection in an ultrasonic thickness measurement mode; the wear alarming device comprises a control module, a probe group, an alarming module and a display module; the probe group comprises three groups of ultrasonic thickness measurement probe groups which are arranged on non-overflowing surfaces of overflowing parts; signal terminals of the three groups of probe groups are connected with signal terminals of the control module. The slurry pump with the overflowing part excessive wear alarming function has the advantages of monitoring the thickness of overflowing parts in real time due to the wear alarming device which monitors the thickness of the overflowing parts in the ultrasonic thickness measurement mode; enabling the control device to control the alarming module to alarm and a display device to display the thickness of corresponding probe portions, prompting operators to halt the production to perform planned overhaul, ensuring safety and avoiding damage caused by unplanned production halt when the thickness of the overflowing parts is smaller than the set critical value.

Description

technical field [0001] The invention relates to the technical field of slurry pumps. Background technique [0002] At present, although there are many structural forms of the slurry pumps (dredge pumps, sand dredging pumps) used, their structures are similar. Sheath, back guard, etc., in the process of use, due to the direct contact of their flow parts (mainly including the impeller, sheath, front guard, rear guard, etc.) to form a particularly complex slurry medium, wear quickly, and its The form of damage is that during the rotation of the pump, the excessively worn flow parts may fall off or directly crack, and the slurry medium directly impacts the volute under the action of the centrifugal force of the impeller. Parts falling off or larger lumps in the slurry medium may directly break through the volute and fly out. The flying blocks are very likely to cause casualties. Even if the lumps do not break the volute, they cannot The lumps are output according to the convey...

AI Technical Summary

Problems solved by technology

[0002] At present, although there are many structural forms of the slurry pumps (dredge pumps, sand dredging pumps) used, their structures are similar. Sheath, back guard, etc., in the process of use, due to the direct contact of their flow parts (mainly including the impeller, sheath, front guard, rear guard, etc.) to form a particularly complex slurry medium, wear quickly, and its The form of damage is that during the rotation of the pump, the excessively worn flow parts may fall off or directly crack, and the slurry medium directly impacts the volute under the action of the centrifugal force of the impeller. Parts falling off or larger lumps in the slurry medium may directly break through the volute and fly out. The flying blocks are very likely to cause casualties. Even if the lumps do not break the volute, they cannot The lumps are output according to the conveying track of the intact slurry pump. A large number of lumps stay in the volute, which is easy to block the impeller and burn out the drive motor. The existing slurry pump cannot detect the flow-passing parts in real time. Only when there is a failure, do emergency shutdown for maintenance. On the one hand, there is a risk of casualties and equipment damage. On the other hand, unplanned shutdown will cause heavy losses to the production enterprise.

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