Pumps are the machinery for transporting liquids. Whate […]
Pumps are the machinery for transporting liquids. Whatever type of pump it is, in the end, it is impossible for it to leave the liquid. Only in the presence of liquid can the pump work. So, when we choose to use the pump, what criteria should we use to choose the pump that suits us?
First of all, of course, considering the use voltage of the system, if safety is taken into account, leakage does not worry about harming people, and energy-saving, the use of direct current, then it is bound to buy less than the safe use voltage of the human body under 36V DC pump. If safety is not considered, there is no need to save costs, any voltage can be used, the selection of pumps is not limited to the DC range, AC can also be selected.
Secondly, it is a choice of traffic. The choice of flow rate should be based on the actual requirements of the system and the minimum diameter of the pipeline. If 3 cubic meters of water are required per hour, the minimum diameter of the pipeline is 14 mm. So when choosing a pump, it is necessary to choose a pump whose flow rate is more than 3 cubic meters per hour and whose inlet and outlet are less than 14 mm in diameter. Because you choose a pump with a diameter greater than 14 mm, when the pump works, the pipe diameter less than 14 mm in the system will limit the flow, so that the flow can not reach 14 mm.
The third is the choice of head. The flow rate of the pump is inversely proportional to the head. The larger the lift, the smaller the flow. Usually, the head and flow indication on the pump refers to the maximum flow and the maximum head that the pump can reach. When it reaches the maximum head, the pump has no flow, and when the maximum flow, it means the open flow of the pump without any water pipes.
Fourth, the use of pump voltage and current, the use of voltage must not exceed the pump voltage, too large a voltage will burn the pump. The current should not be lower than the prescribed current, which will prevent the pump from operating at full power. Of course, it can't exceed the prescribed current too much, so the motor will burn out easily when short circuit occurs.