Automatic water filling method of mix sewage pump before the start of the two main ways: one is the water filling valve assembly, valve check valve, installed in the inlet pipe imports, the disadvantage of this method is that valve head loss is bigger, affect the efficiency of the pump device; the other is not the end of valve with water, the biggest advantage this method is to save energy, relative to the valve of the pumping station could be saving 10% ~ 15%. The Shanghai Welpump introduced several methods of water filling automatic mix sewage pump, for users to choose to run the pump.
Artificial filling method The water inlet pipe of small diameter less than 300mm pumping station, the water inlet pipe is usually equipped with imported valve, general artificial water filling method, namely from the special water filled exhaust hole pump shell by the upper part of the water filling funnel (or an ordinary bottle to remove the bottom of the inverted water filling). The water inlet pipe of small diameter less than 300mm pumping station, the water inlet pipe is usually equipped with imported valve, also can exit from the pump outlet pipe (water piping short pump to pump water filling). Because there is no need to buy other water filling equipment, in the current rural small pumping station, the water filling method is more common.
Not the end of the valve, check valve and a small pumping station pipeline is short, but also can be used to start, one way to pump water filled from the water outlet, the water pump and the air in the pipeline is gradually carried out, the general continuous water filled a few minutes later, the normal pumping pumps can work.
The vacuum tank filling method for small pumping station is not located at the end of the valve, the vacuum tank filling method. The vacuum water tank is a closed type water tank which is made of tin. The volume of the water tank is at least 3 times of the volume of the water inlet pipe. The position of the water tank installation should be close to the water pump, and the bottom of the water tank should be slightly lower than the pump axis. The height of the vacuum tank is generally 2 times the diameter of the water tank.
Before starting the pump, the water tank filled with water for sealing. Pump starts to pump water from the vacuum tank, the tank water level resulted in the formation of a certain degree of vacuum in the tank, into the water in the pool will be under the influence of the atmospheric pressure through the inlet into the tank, thus forming the water cycle, the pump started running. The water filling method has the following advantages: small hydraulic loss, high efficiency of pumping station, low labor intensity of technical personnel, easy to start, and is conducive to the realization of the automatic control of pump unit.
Jet pump filling method for diesel engine driven pump, can be used to exclude diesel exhaust gas into the jet pump is communicated with the top of the pumping water, thereby removing the bottom of the pump valve. When the pump starts, and the handle will be connected to the closure of the valve cover, the exhaust emitted from a jet device through the tube connected to the air suction pump. After the water is filled, the valve cover is opened and the control valve is closed. This filling method is to make full use of the benefits of a power machine, two is to improve the efficiency of the pumping station.
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