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Maintenance and overhaul of multistage pumps


Maintenance and overhaul of multistage pumps

The maintenance of multi-stage pumps is mainly explained from the period of deactivation and operation. The requirements for maintenance and overhaul of multi-stage pumps are as follows:
The multi-stage pump, which is a horizontal centrifugal multi-stage pump, adopts the hydraulic model of the energy-saving products recommended by the state and is a technological leader in the industry. D-type horizontal centrifugal Multistage Pump has the advantages of high efficiency, wide performance range, safe and stable operation, low noise, long service life and convenient installation and maintenance.
Applicable to factories, mines, cities, power stations, petroleum, chemical, light power, environmental protection of water supply and drainage, farmland irrigation and drainage and various water conservancy projects. Multi-stage pumps are relatively common and are generally cast iron. Therefore, it can be seen that the D-type horizontal centrifugal multistage pump is widely used, and there are many occasions used. Therefore, we need a good maintenance and maintenance for the D-type horizontal centrifugal multistage pump to enable horizontal centrifugation. The multi-stage pump runs safely and has a long service life.
The following are the requirements for maintenance and overhaul:
1. Maintenance of multi-stage pumps.
a. Multi-stage pump deactivation period. Replace the old horizontal centrifugal multistage pump packing; replace the horizontal centrifugal multistage pump lubricating oil (water pump thrust bearing box); flush the horizontal centrifugal multistage pump water guiding bearing with water every month for about 2 minutes; Check the horizontal centrifugal pumping system of the horizontal centrifugal pump to check whether the fasteners are loose. b. Leakage condition of multi-stage pump packing when multi-stage pump is running; multi-stage pump lubrication water pressure; multi-stage pump lubricating oil level and bearing temperature; do a good job log, such as horizontal centrifugal multi-stage pump water pump has more faults recording.
2. Maintenance of multi-stage pumps.
a. When overhauling the multi-stage pump, the motor control switch must be in the “off” position and the warning sign should be hung to avoid personal injury. b. When disassembling the multi-stage pump, mark the joints of the parts so that the installation can be carried out smoothly; the small parts and fasteners removed by the multi-stage pump are packed in boxes, marked, indicating the location The parts removed by the multi-stage pump are cleaned and coated with anti-rust oil. If the surface of the paint is rusted, it should be rusted and repainted; the horizontal centrifugal multi-stage pump “O” ring, packing, rust Fasteners cannot be reused and spare parts are prepared.

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