There are differences between rotary pumps and screw pumps in terms of volume, self-priming, working pressure, maintenance, and other aspects. Based on which type of equipment to choose and the manufacturing situation of the processing plant, each type of equipment has corresponding advantages and disadvantages. What is the difference between a rotary pump and a screw pump? Let's take a look at the following key points:
1. The self-priming ability is different.
The rotor pump is affected by the speed ratio, and the nearby cycloidal rotor pump can only have good self-priming ability when the equipment speed ratio exceeds 200rpm, and can operate dry during this period. Unlike screw pumps, although their self-priming ability is also strong, customized non clogging rotor pumps cannot run dry for more than one or two minutes, otherwise it is not good for the equipment.
2. The total area varies in size.
The design scheme of the rotor pump manufacturer is relatively exquisite, occupying a small total area and not requiring a large space. Usually there may be special requirements, or unique specifications can be customized as needed. The screw rod of the single screw pump is relatively long and occupies a large indoor space. If equipment maintenance is required, a larger location should be prepared in advance to prevent inconvenience during maintenance. In addition, there is only one size available and it cannot be customized arbitrarily.
3. The sensitivity of dry to dry conversion varies.
Rotary pumps can operate dry for more than half an hour without any problems. The temperature rises quickly and does not cause damage to the equipment. Like single screw pumps, the temperature of the equipment will rise within minutes of drying, and overheating is very likely to pose a risk.
In addition, the difference between rotary pumps and screw pumps is also related to maintenance methods, spare parts costs, and service life. Overall, the maintenance method for rotary pumps is very simple, and once the equipment is damaged, it can be repaired in place without any additional parts and components being expensive.
