Horizontal multi-stage pump and the difference between vertical multistage pump structure and the structure of the system

is a kind of centrifugal pump, multi-stage pump refers to two or more than two impeller pump, can lift more than 125 meters. Multistage centrifugal pump series a lot, but the principle is the same, similar in structure, mainly according to the different appearance is divided into: vertical multistage pump and horizontal multi-stage water pump.

multistage centrifugal pumps

the basic construction of multistage pump is composed of inlet section, outlet section, middle, end cover, impeller, pump body, pump shaft, bearing, seal ring, stuffing box etc.

1, is the core part of the multistage centrifugal pump impeller, strength higher than that of its speed, on the impeller blades and play a major role, the impeller through static balancing experiments before assembly. Impeller on the inside and outside for smooth surface to reduce friction loss of water.

2, inlet section, outlet section, the middle is also called the pump shell, it is the body of the multi-stage pump. Support fixed effect, and connected to install bearing bracket.

3, the role of pump shaft is connected by coupling and motor, the torque of the motor to the impeller, so it is a major part of the mechanical energy transfer.

4, bearing is set on the pump shaft support components of pump shaft, which has two kinds of rolling bearing and sliding bearing. Rolling bearing use butter as a lubricant oil is generally appropriate for two-thirds to three-quarters of the volume too much will be fever, too little and there was a noise and fever! Sliding bearing is using a transparent oil as lubricant, go to the oil level line. Too much oil leak to the pump shaft and floating base, too little bearing overheating and burn out cause an accident! In the water pump bearing has the highest temperature during the operation of around 85 degrees generally run at 60 degrees, if high will find reason ( If there are impurities, oil is black, whether water) And processed in a timely manner!

5, sealing ring, also known as minus leakage ring. Import and pump impeller shell gap between in the cause of high water in the pump by means of this clearance flow to the low pressure area, affect the water yield of pump, efficiency! Clearance starts to cause the impeller and pump casing friction wear. In order to increase the flow resistance reducing internal leakage and delay the service life of the impeller and the pump shell, the pump casing and impeller around the foreign aid junction with sealing ring, sealing gap in a 0. 25 ~ 1. It is advisable to 10 mm.

6, stuffing box is mainly composed of filler, seal ring, packing, packing gland, water tubes. The role of the stuffing box is mainly in order to close the gap between water pump casing and pump shaft, don't let the flow within the pump does not flow outside to not let outside air into the pump. Always keeping the vacuum inside the pump! When the pump shaft and be about to rely on water seal packing friction heat to hold water to the water seal circle packing cooling! Keep the pump running. So in the process of pump run Tours of inspection to check the stuffing box is paying special attention to! Running about 600 hours will be carried out on the packing replacement.

7, can change the import and export. Direction of multistage pump.

horizontal multi-stage pump and vertical multistage pump structure difference between

horizontal multi-stage pump structure

vertical multistage pump structure

can be seen from the above horizontal multi-stage centrifugal pump and vertical multistage centrifugal pump is the main difference, the difference between inlet and outlet, horizontal multi-stage centrifugal pump is level to level out, vertical multistage pump is horizontal to vertical. Second, the working principle of vertical multistage pump and horizontal multi-stage pump is exactly the same. Only vertical multistage pump motor is vertical with the centerline of the pump, vertical multistage water pump of the area is very small, easy to install in a limited space. And horizontal multistage pump motor and the centerline of the pump is horizontal, so the horizontal multistage pump area is relatively large. Generally the manufacturer will install the pump and motor in a common base. In this way, can differ because of the location of the installation, cause when maintenance convenience, horizontal multistage pump, relative to character, when maintenance, remove the water pump to relatively easy, and alignment after repair, and easier to use. But the vertical multistage pump is relatively difficult to remove, if the motor is large, to lift the motor must also need professional technicians, to remove, installation for timing at the same time, also more troublesome.

as a result, customers when picking pump, because of according to own actual situation to choose the structure of the pump.

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