What is the principle of the pumping pump and what does Yang Cheng mean by the pumping pump
The basic principle of the pumping pump
The circumference of the motor Movement, the diaphragm inside the pump is reciprocating through the mechanical device, so as to compress and stretch the air in the pump chamber of a fixed volume to form a vacuum (negative pressure), and a pressure difference is generated between the pump exhaust port and the external atmospheric pressure. Under the action of the pressure difference, the gas is pressurized (sucked) into the pump chamber, and then discharged from the exhaust port.
What does Yang Cheng of the pump mean
The head of the pump is usually expressed by H, the unit is m, and the head of the centrifugal pump is based on the center line of the impeller , It consists of two parts, the vertical height from the center line of the pump impeller to the water surface of the water source, that is, the height that the pump can suck up the water, which is called the suction lift, referred to as the suction lift.
The lift of the pump refers to the height that the pump can lift water, usually expressed by H, and the unit is m. The head of the centrifugal pump is based on the center line of the impeller, and is divided into two parts. The vertical height from the center line of the pump impeller to the water surface of the water source, that is, the height that the pump can suck up water, is called the suction lift, or suction lift for short; the vertical height from the center line of the pump impeller to the water surface of the water outlet, that is, the pump can press the water up The height is called the pressure water head, or the pressure head for short. That is, the pump head = suction head + pressure water head. It should be pointed out that the head marked on the nameplate refers to the head that the pump itself can generate, and it does not include the head loss caused by the frictional resistance of the water flow in the pipeline. When choosing a water pump, be careful not to ignore it. Otherwise, the water will not be pumped.
Pump head = net head + head loss. Net lift refers to the height difference between the suction point of the pump and the high control point, such as pumping water from a clear water pool and sending it to a high water tank. The net lift refers to the height difference between the suction inlet of the clean water pool and the high water tank.
The pump head is the vertical lift height of the pump. For example, the lift of the water pump is 20 meters, that is, the vertical lifting height of the water pump is 20 meters.
The lift of the pump refers to the height that the pump can lift water. The lift of the centrifugal pump is based on the centerline of the impeller and consists of two parts.
The vertical height from the center line of the pump impeller to the water surface of the water source, that is, the height at which the pump can suck up water, is called the suction lift, or suction lift for short; That is, the height that the pump can press the water up is called the water pressure lift, or the pressure lift for short. Generally speaking, the pump head is the vertical lifting height of the pump. For example, the pump head is 10 meters, that is, the vertical lifting height of the pump is 10 meters.
How to determine the head of the pump
How to determine the head of the submersible pump? Is it the height between the pump and the rising liquid level or the height between the two liquid levels? For example, for the mixed liquid return pump in the A2O process, if a submersible sewage pump is used, then the liquid level of the O pool and the A pool is basically the same, and the pool depths of the O pool and the A pool are both 5 meters. How to calculate it?
If the liquid level elevation of the two pools is the same, the lift of the pump will be very small, and the lift will be equal to the total head loss of the pipeline, but your consideration is the most unfavorable situation, that is, water absorption When the lowest water level of the pool and the highest water level of the inlet pool, the lift at this time = the difference between the elevations of the two water surfaces + the total head loss of the pipeline.
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