Introduction of single stage centrifugal pump
The single stage centrifugal pump includes a pump body, a pump cover, an electric motor with an output shaft, a pump shaft, a bearing seat, an impeller, a mechanical seal and a machine sealing cover installed in the pump body, characterized in that it further comprises a motor shaft And a shaft bearing mounted on the bearing housing to assist the support of the pump shaft; the pair of clamp couplers being rigidly connected to the motor output shaft and the pump shaft, respectively, Between the motor output shaft and the pump shaft, there is a space distance between the mechanical seal and the mechanical gland.
Structural Characteristics of Single Stage Centrifugal Pump
The single stage centrifugal pump is characterized in that it further comprises a pinch coupling provided between the motor output shaft and the pump shaft and a guide bearing mounted on the bearing seat to assist the support pump shaft; The shafts are rigidly connected to the motor output shaft and the pump shaft, respectively, and there is a space distance between the motor output shaft and the pump shaft to facilitate the mechanical seal and the mechanical gland. There is no need to remove the motor and pump cover when servicing or replacing mechanical seals.
The working principle of single stage centrifugal pump
Single-stage centrifugal pump works is: the reason why the centrifugal pump can be sent out of water is due to the role of centrifugal force. When the pump is running, the pump and the inlet pipe must be filled with water to form a vacuum. When the impeller rotates quickly, the blades cause the water to rotate rapidly. The rotating water runs away from the impeller under the action of centrifugal force. The water in the pump is After the thrown, the central part of the impeller forms a vacuum area. Water in the water pressure (or water pressure) under the action of the pipe network through the pressure into the water pipe. This endless cycle, you can achieve continuous pumping. It is worth mentioning that: before the start of the centrifugal pump must be filled with water to the pump shell before they can start, otherwise the pump will not be able to complete the suction, causing the pump heat, vibration, no water, resulting in "idle" Damage to the pump (referred to as "airtight") caused by equipment accidents.
Characteristics of single stage centrifugal pump
1, energy efficient: CFD calculation of hydrodynamics, analysis and calculation of the pump pressure distribution and velocity distribution relationship, optimize the pump flow channel design to ensure that the pump has a high efficiency of the hydraulic line, improve the efficiency of the pump.
2, installation, easy maintenance: vertical pipe structure, the pump can be imported and exported like a valve installed in any position and any direction of the pipeline, installation and maintenance is very convenient.
3, smooth operation, safe and reliable: motor shaft and pump shaft coaxial straight, concentricity, smooth operation, safe and reliable.
4, stainless steel sleeve: the shaft seal position is relatively easy to be rusted, direct connection pump shaft once the corrosion, easy to cause mechanical seal failure. STG pump here with inlaid stainless steel bushings, to avoid corrosion occurs, improve the shaft life, reducing the operation and maintenance costs.
5, bearing: pump with the motor, Y [Y2] 280 below the shaft of the end of the bearing (including Y180 below the fan end bearing) closed bearings, the normal use of motor bearing maintenance.
6, mechanical seal: mechanical seal base material generally use rubber bellows structure, the traditional mechanical seal on the shaft seal by the O-ring line seal to rubber parts of the two-sided seal, in the water medium to improve the sealing effect.
Single-stage centrifugal pump when using attention
To avoid shaft wear, the shaft is protected by shafts at the shaft through the packing chamber. There is an O-ring between the sleeve and the shaft to prevent ingress or leaking along the mating surface.
Single - stage centrifugal pump transmission
Pump drive mode is extended by the elastic coupling and the motor connected to the direction of rotation of the pump, from the drive side, as the clockwise rotation.
The use of single-stage centrifugal pump
Mainly applicable to industry and agriculture and the city, drainage, fire water supply.