Advantages of polyurethane impeller cover
Writer： admin Time：2020-08-31 14:04 Browse：℃
What are the characteristic functions of the impeller cover? Let's understand with the impeller cover manufacturer: the flotation machine impeller cover is the central accessory of the flotation machine, mainly used for metal and non-metal mineral processing. The product has good wear resistance, impact resistance, tear resistance and Chemical stability.
The role of the impeller cover on the flotation machine
1. When the pulp is thrown out by the impeller, a negative pressure suction is formed under the cover plate;
2. Adjust the amount of pulp entering the impeller;
3. It can prevent the ore from pressing the impeller when it is stopped and difficult to start;
4. Play some role in steady flow. When the flotation machine is working, the mine tube feeds the pulp to the center of the cover plate, and the centrifugal force generated by the rotation of the impeller throws the pulp out. At the same time, a negative pressure is formed between the impeller and the cover plate, so it is automatically sucked into the outside through the air inlet pipe. air. The strong stirring effect of the impeller makes the pulp and air fully mixed, and divides the airflow into many tiny bubbles. In addition, some bubbles will be precipitated from the slurry behind the impeller blade.
The polyurethane impeller cover is made of a new type of polyurethane material, which successfully and easily solves many problems such as rust and poor operation of the impeller cover made of steel and other materials in the past. This makes the polyurethane impeller cover in many cases Among the impeller cover products, it has become the most popular variety.
But if the technology of the polyurethane impeller cover is not sophisticated enough, it will not achieve good results. Whether the technology of the polyurethane impeller cover is sophisticated can be expressed in some subtle aspects.
For example, the hardness of the polyurethane impeller cover needs to meet the requirements, the hardness of the polyurethane impeller cover must be moderate, if the hardness is not enough, the impeller cover will be easily damaged, and the polyurethane impeller cover has a certain hardness to prevent drilling Surface burrs, but if the hardness of the polyurethane impeller cover is too high, it will wear the drill bit. Second, when the polyurethane impeller cover is used as the material, the material must not contain resin components, otherwise the holes will be greasy when drilling. At the same time, the thermal conductivity is required to be large, so that the heat generated during drilling can be quickly taken away and the temperature of the drill bit can be reduced.
Finally, the polyurethane impeller cover has thickness and precise tolerances, and needs to have a certain rigidity, which can prevent the plate from shaking when the drill is lifted, and it must have a certain degree of elasticity. The location of the drilling hole ensures that the drilling location is accurate.
