The self-priming sewage pump is a centrifugal pump, but it eliminates the disadvantages of ordinary centrifugal pumps that require other auxiliary equipment to absorb water.
When the liquid level of commonly used vertical centrifugal pump products is lower than that of the pump, the centrifugal pump body must first be filled with liquid, and a bottom valve must be installed to divert water to drain the air in the suction pipe and casing, and to inhale the pipeline and casing. liquid. The water diversion from the tank is completed before starting the pump, otherwise the pump will not work properly and the air will damage the bearings. A conventional double-suction centrifugal pump consists of a vacuum pump installed next to the centrifugal pump and a vacuum pipe connected to the top of the centrifugal pump housing, which is completed with a vacuum pump or vacuum system. The self-priming sewage pump eliminates this external triggering mechanism.
The use of self-priming sewage pumps does not require the installation of bottom valves and water diversion, which greatly reduces the labor intensity of manpower. It is also easy to install and use, and requires very little maintenance.
There is a self-priming process when using a self-priming sewage pump, because the sewage pump needs to purge the air in the pipe to reach a negative pressure state before it can suck up the water and discharge it. Normally, it is normal to suck up the water within 5 minutes. Due to special working conditions such as emergency rescue and fire-fighting water, it is necessary to consider how to increase the water suction speed of the pump. So how can we improve the suction speed of the self-priming sewage pump? You can increase the water absorption speed of Zi through the following methods:
1. Install a bottom valve with better sealing performance under the pump pipe pool. After the water is sucked up, the water liquid will always be stored in the pipe. There is no need to suck the air in the pipe when starting next time, which can improve the pump performance. The effect of water absorption speed.
2. Install a water ring vacuum pump on the pump pipeline, and use the vacuum pump to directly pump air. The vacuum pump is used to pump air. It can suck air much faster than the self-priming sewage pump. Usually, a vacuum pump is installed. It only takes 50 seconds to form negative pressure. At this time, water can be discharged as long as it is started.
