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What are the functions of the impeller cover plate?

2025-07-07

The impeller cover plate plays a crucial role in equipment such as flot machines, with its main functions including the following aspects:

1. Forming a pump and aeration
The impeller cover plate, together with the impeller, forms pump. Through the rotation of the impeller, centrifugal force is generated, which throws the pulp out and forms a negative pressure area under the cover plate, automatically inhaling air. This design helps to fully mix the pulp with air and divides the airflow into fine air bubbles, promoting the flotation process of the pulp.

2.venting the ore sand from pressing the impeller during shutdown
The impeller cover plate can prevent the ore sand from pressing the impeller during shutdown, ensuring that the equipment can start smoothly again without being blocked by the ore sand, and protecting the motor from overloading damage.

3. Stabilizing the flow and reducing eddy currents
The guidees on the impeller cover plate play a guiding role in the thrown-out pulp, reducing eddy currents and hydraulic losses, thereby stabilizing the flow and improving the flot efficiency.

4. Regulating the flow of pulp and increasing internal circulation
The impeller cover plate can regulate the amount of pulp entering the impeller, increasing the circulation of the pulp and optimizing the distribution of pulp and the generation of bubbles in the flotation process.

5. Improving abrasion resistance and extending service lifeModern impeller cover plates are often made of high-abrasion-resistant materials such as polyurethane, which have the characteristics of high wear resistance and corrosion resistance, extending the service life of the impeller cover plate.

In summary, the impeller cover plate not only plays a key physical role in the flotation machine, such pumping pulp, aeration, and stabilizing flow, but also improves the equipment's durability and operational efficiency through its material properties

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