Motor soft-start pump unit

Abstract

The invention discloses a motor soft-start pump unit, which comprises a base. A pump machine, a clutch and a motor are sequentially arranged on the top part of the base; a pump bottom is welded to thebottom part of the pump machine; a pump main shaft is arranged in the pump machine; a clutch main shaft is arranged in the center of the clutch in a penetrating way; a bearing is riveted to a connecting part of the pump main shaft and a clutch shell; one end, far away from a clutch base, of a rivet is fixed into the base; a diaphragm spring stretches out of the clutch shell; a clutch pedal is fixedly arranged on one end, stretching out of the clutch shell, of the diaphragm spring; a motor main shaft is sleeved on one end, far away from the pump main shaft, of the clutch main shaft; a bearingis sleeved on a connecting part of the motor main shaft and the clutch shell; the motor main shaft penetrates through the bearing to arrive at the inside of the clutch shell so as to be sleeved with the clutch main shaft; and a motor base is welded to the bottom part of the motor. According to the motor soft-start pump unit provided by the invention, the occurrence of the phenomenon that equipmentis damaged by an excessive starting torque or an excessive current is avoided, the impact on a power grid is reduced, and the occurrence of the phenomenon that the power grid is impacted by instant start of the motor so as to cause the fluctuation of voltage of the power grid is avoided.

Description

technical field [0001] The invention relates to the technical field of pumps, in particular to a motor soft start pump unit Background technique [0002] Close the pump outlet valve, open the pump inlet valve, and ensure that the pump is "self-priming" (the liquid level is higher than the pipeline condition of the pump inlet, the starting procedure of the water pump is: start the motor, and when the motor is running normally, open it slowly The outlet valve increases the current slowly. If the motor is started at full voltage under load, the load on the motor will be too large and the current of the motor will be increased, which will affect the life of the equipment and even damage the equipment. The existing technology mainly increases the load on the equipment. The frequency converter is installed, the cost of the frequency converter is too high, and the maintenance cost is high. At the same time, some people use a soft starter, but this technology is mainly imported from...

AI Technical Summary

Problems solved by technology

If the motor is started at full voltage under load, the load on the motor will be too large and the current of the motor will be increased, which will affect the life of the equipment or even damage the equipment

The existing technology mainly installs a frequency converter on the equipment, and the cost of the frequency converter is too high and the maintenance cost is high. At the same time, some people use a soft starter. However, this technology is mainly imported from abroad and is not suitable for long-term development.

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