Pump water, pump self-priming pump, suction pump suction

【Diversion】

    In the pump industry, the water guide specifically refers to the water. Because some of the pumps before work, you must manually add water to make the pump interior to form a closed environment, pump parts and then movement to create a partial vacuum in order to allow external water pressure in the internal and external pressure by the atmospheric pressure into the pump inlet to complete the suction action . For example, the previous rural water tank, it must first increase the water, in order to suck up the water wells.

【Self-priming】 mainly used in pumps, pumps, is a more important parameter.

    1. The meaning of self-absorption

    As the name suggests, self-absorption refers to the ability to automatically absorb water, that is, before the pump work, even if all the water pipes in the case of the air, without pre-added water, the pump will automatically pump the water pumped down below Go.

    2. Self-priming principle

    When the pump is in the air, the negative pressure (vacuum) formed by the pump work will be lower than the water pressure of the pumping port under the action of the atmospheric pressure and then discharged from the water discharge end of the pump. This process does not need to add water (guide water). With this ability to pump called self-priming pump.

    Some centrifugal or rotary vane pump before the suction, must be added in the pump chamber to form a closed environment, and then pump the formation of negative pressure in order to achieve the purpose of water. Such as in rural areas before the manual pump. No self-priming pump, every time before adding water is very troublesome.

【Suction】 suction height is called suction. Units are generally meters;

    Also known as the maximum self-priming height. Ie the maximum height (the vertical distance of the pump outlet from the surface to be pumped) that is automatically pumped up without water. Our pumps are self-priming pumps, the standard suction process refers to this situation. Some centrifugal pumps do not have self-priming capacity, the first use must be added water for the job. Some diaphragm pumps, although there are self-priming capacity, but the suction process is often associated with the inlet pipe is all the air can draw the vertical height of the water gap, which please note.

    Suction of the level, with the pump power, flow, structure and so on, but limited by the size, power, general micro-pump self-absorption process is not easy to do higher, because a maximum pressure of water pressure The height of 10.3 meters (because of an atmospheric pressure ≈ 10.3 m water column pressure), so the maximum self-suction process is about 10.3 meters. However, in actual operation, due to sealing performance reasons, the suction is generally not more than 6.5 meters.