Precautions for chemical pumps during transportation

The ultra-high molecular weight polyethylene material desulfurization pump of Dalian Chemical Pump: All flow components are made of steel lined ultra-high molecular weight polyethylene (UHMW-PE), which has the highest wear resistance among plastics, four times higher than nylon 66 (PA66) and polytetrafluoroethylene (PTFE), and 7-10 times higher than carbon steel and stainless steel. The flow range can reach 12000m ³/h.

The head of the pump is generally below 100m Compared with stainless steel material, it has obvious advantages in acid and alkali resistance. The commonly mentioned medium temperature for low-temperature pumps is slightly higher at minus 30 degrees Celsius and lower at minus 220 degrees Celsius. Designers need to consider the low-temperature performance of the material, impact resistance (mainly Ak value), physical and chemical properties of the medium, especially the volatility of media such as liquid oxygen, liquid nitrogen, liquid argon, and natural gas.

The phenomenon of impeller rubbing against the shell may occur during the use of CQB magnetic pumps, and it is a very easy cause. Generally, during transportation, damage to the base, mechanical overload, and impurities generated by overcurrent can damage the normal use of the impeller, causing displacement and distortion of the central axis. The impeller will start to rub against the shell, which can seriously lead to flammable and explosive liquid explosions and other hazards.

The main reason for pump shaft breakage is that the shaft is twisted due to dry wear of the bearings caused by the pump running empty When disassembling the pump for inspection, it can be seen that the bearings are severely worn. The main way to prevent the pump from breaking is to avoid idling. Rotate the impeller by hand to see if it is smooth, and at the same time, check if the gaps on both sides are the same width. If there is an offset.

Loosen the three screws at the rear of the isolation sleeve with a bolt cutter and recalibrate the central axis until the calibration is tightened. If it is damaged, it should be replaced immediately. Convert the kinetic energy of some fluids into pressure energy, and then evenly guide the flow towards the discharge outlet. The casing of single suction single-stage centrifugal water pumps is mostly spiral volute type, and some also have fixed guide vanes inside the casing.