The nature of the liquid pumped by the pump is very different, therefore, the type and structure of the pump is quite many, and these pumps play an important role in the chemical industry, petroleum, printing and dyeing, shipping, if the pump failure, will interrupt the flow in the process, so that the device had to stop.
Because the pump is so important, in the planning and design of the device, in order to choose the pump, we must fully consider the structure and characteristics of the pump, so that the device can operate safely and smoothly. In addition, the operation cost of these pumps accounts for more than half of the operation cost of the plant, so from the economic point of view of the whole plant, it is necessary to make the performance specifications of the selected pump conform to the operation characteristics of the plant.
Based on these reasons, the requirements for chemical pumps are as follows:
1) Simple hook, easy to operate;
2) Can run for a long time, the mechanical reliability is high;
3) Liquid corrosion resistance, wear, long service life;
4) Good performance;
5) The performance of the pump conforms to the operation characteristics of the device;
6) High interchangeability of parts and components, easy to replace,
7) Low price.
The above points, of course, are also the matters that must be considered when choosing a general pump,
But because most of the pump pumping liquid properties and general pump is different, so the risk of damage caused by corrosion and wear is also large. In addition, the device is characterized by long-term continuous operation, and its service conditions are often much more demanding.
Therefore, no matter how high the efficiency of the pump, how good the performance, corrosion and wear in a short period of time or easy to malfunction in operation, disassembly and assembly is difficult, parts replacement is time-consuming, of course, is not. In the final analysis, easy operation of structure and high mechanical reliability are the most important problems of the pump.
