Easy-to-disassemble type single-stage single-suction vertical centrifugal pump

Abstract

The invention discloses an easy-to-assemble type single-stage single-suction vertical centrifugal pump which comprises a pump shaft, a coupler and a motor shaft. The pump shaft and the motor shaft are connected through the coupler, and the coupler is a clamp-type coupler. The easy-to-assemble type single-stage single-suction vertical centrifugal pump has the advantage that the parts are convenient to replace.

Description

technical field [0001] The invention relates to a centrifugal pump, in particular to a detachable single-stage single-suction vertical centrifugal pump. Background technique [0002] The existing centrifugal pumps have the following problems: [0003] 1. To replace the wearing parts (such as mechanical seals and motor bearings), it is necessary to disassemble the water pump and lift the motor. The workload is heavy, the time is long, and the cost is high, which is not conducive to the maintenance and maintenance of the user. [0004] 2. Because the pump shaft and the motor shaft are the same shaft, the pump shaft must be made of carbon steel or ferritic stainless steel with good magnetic conductivity, which has poor corrosion resistance. Once the shaft is corroded, the motor rotor can only be replaced, and the maintenance cost is high. . [0005] 3. The pump cover and the motor bracket are of an integrated structure, which has poor versatility. When the conveyed medium is ...

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Problems solved by technology

[0003] 1. To replace the wearing parts (such as mechanical seals and motor bearings), it is necessary to disassemble the water pump and lift the motor. The workload is large, the time is long, and the cost is high, which is not conducive to the maintenance and maintenance of users.

[0004] 2. Because the pump shaft and the motor shaft are the same shaft, the pump shaft must be made of carbon steel or ferritic stainless steel with good magnetic conductivity, which has poor corrosion resistance. Once the shaft is corroded, the motor rotor can only be replaced, and the maintenance cost is high.

[0005] 3. The pump cover and the motor bracket are integrated structure, which has poor versatility. When the conveyed medium is corrosive, it needs to be made of stainless steel as a whole, and the manufacturing cost is high.

[0006] 4. Because the weight of the pump rotor and the axial water thrust of the impeller are borne by the motor, the bearing load is large and the life is short, which in turn affects the reliability of the whole set of equipment

[0007] 5. No bearing support on the pump shaft leads to increased flexibility of the pump shaft, which is easy to wear the impeller ring, reducing the efficiency of the whole pump

[0008] 6. The components of the centrifugal pump have poor versatility

[0009] 7. The distance between the pump chamber and the motor is relatively close, and the medium is easy to transfer heat to the motor bearing, which reduces the life of the motor bearing

[0010] Eight, the motor bearing is not easy to disassemble, there is no independent bearing body, that is, the bearing body and the motor end cover are integrated structure

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