The specific questions and answers regarding the training on slurry pumps are as follows:
1. What is the flow rate of a slurry pump?
Answer: The flow rate of a slurry pump is also known as the discharge volume, the lifting volume, or the output volume, and it refers to the amount of liquid or slurry discharged by the slurry pump per unit time. It is generally expressed in units of m³/h or L/s.
2. What is the head of a slurry pump?
Answer: The energy gained by a unit weight of liquid when passing through the slurry pump. It is commonly referred to as the head. It can be understood as the height that the pump can reach when transporting liquid or slurry. It is generally expressed in units of meters.
3. What is the speed?
Answer: It refers to the number of revolutions per minute of the pump shaft when the pump is running.
4. What is the power?
Answer: The power of the slurry pump refers to the shaft power of the pump, that is, the power transmitted from the prime mover to the pump.
5. What is the effective power of the pump and the power of the pump?
Answer: The effective power of the pump is the product of the weight flow rate and the head of the pump. The efficiency of the pump refers to the ratio of the effective power to the shaft power.
6. What is the cavitation margin?
Answer: It refers to the excess energy of a unit weight of liquid at the suction inlet of the pump that exceeds the vaporization pressure.
7. What are the structural characteristics of ZGB, AH(R)/HH/M slurry pumps?
Answer: These types of pumps are horizontal double-shell axial suction centrifugal slurry pumps. The pump outlet can be installed in eight water outlet directions at intervals of 45° within 360°.
8. What are the differences between AH and AHR slurry pumps?
Answer: AH and AHR slurry pumps both belong to the fraction series of slurry pumps. Only the materials of the flow components are different. The flow component of the AH slurry pump is made of wear-resistant high-chromium alloy, while the flow component of the AHR slurry pump is made of rubber. The flow components of the same model of the two slurry pumps can be interchanged.
9. Why is the impeller of the slurry pump balanced in terms of static and dynamic?
Answer: The shape of the impeller is mostly symmetrical, but errors are inevitable during the casting processing, resulting in different internal densities or asymmetry. If no balance treatment is done, the slurry pump will vibrate during operation, and in severe cases, the pump shaft may break. Therefore, it is necessary to perform static and dynamic balance after processing to eliminate the imbalance and ensure the normal operation of the slurry pump.
