XINLAN analyzes common coupling types of pumps

For pumpCouplingGenerally, flexible couplings are selected for the purpose of transmitting power, compensating the relative displacement of the pump shaft and the motor shaft, reducing the precise alignment requirements for coupling installation, mitigating shocks, changing the natural vibration frequency of the shafting and avoiding hazardous vibrations. Wait.There are three common coupling types for pumps: claw-type elastic coupling, elastic pin coupling and diaphragm coupling.
1. Claw type elastic coupling
The claw-type elastic coupling is also called the elastic block coupling. It is characterized by small size, light weight, simple structure, convenient installation, and low price. It is often used in small power and less important occasions.The standard code of the claw-type elastic coupling in the water pump industry is B1104, and its maximum allowable torque is 580N?m, and the maximum shaft diameter is 50mm.
2. Elastic pin coupling
The elastic pin coupling is connected with the flanges of the two halves of the coupling by a pin. One end of the pin is fixedly matched with the tapered pin hole on the flange of the half coupling with a conical surface and a nut. There is an elastic sleeve, which is installed in the pin hole of the flange of the other half of the coupling.The standard of the elastic pin coupling in the water pump industry is B1101, its maximum allowable torque is 8316 N?m, the maximum shaft diameter is 200mm, and it conforms to ISO2858 (equivalent to GB5662-85) pumps (such as domestic IS, IH) Type pumps, etc.) can use extended elastic pin couplings.
3. Diaphragm coupling. Diaphragm coupling adopts a set of thin metal springs, made into various shapes, and is connected with the two halves of the coupling on the driving and driven shafts with bolts. It is recommended by the water pump industry. The diaphragm coupling is a JM1J integral diaphragm coupling with an intermediate shaft, the standard number is ZB/TJ19022-90, the maximum allowable torque is 200000 N?m, and the maximum shaft diameter is 360mm.The comparison of elastic pin coupling and diaphragm coupling is shown in Table 1-7.With the increase in the production volume of diaphragm couplings and the decrease in costs, the usage of diaphragm couplings has been increasing year by year.
 

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