1. The key to the installation technology of the chemical pump is to confirm the installation height of the chemical pump (ie suction lift). This height refers to the safe distance from the river surface of the water resources to the axis of the centrifugal impeller of the chemical pump. It cannot be confused with the allowable suction height of the vacuum pump. The allowable suction height of the vacuum pump marked on the chemical pump product manual or the factory nameplate refers to the chemical pump inlet pipe. The vacuum pump value on the cross section is measured by experiments under 1 standard atmospheric pressure and water temperature of 20 degrees Celsius. It does not take into account the flow of water after the supporting facilities of the suction pipe. The installation height of the chemical pump should be the standard value of the remaining part of the standard value after the height of the suction vacuum pump is deducted after the suction pipe damages the pump head. It should get rid of the actual water absorption height of the landform. The installation height of the chemical pump should not exceed the estimated value, otherwise, the chemical pump will not be able to pump water.
2. The size of the hazard measurement value is that the frictional resistance of the suction pipe damages the pump head. Therefore, it is advisable to choose the pipeline layout and try to avoid installing parts such as elbows. It is also possible to consider a moderately larger tap water pipe to reduce the pipe. External water flow.
3. It should be emphasized that when the elevation and water temperature of the chemical pump installation site are different from the experimental standards, if the local altitude is about 300 meters or the water temperature of the water being transported exceeds 20 degrees Celsius, the measured value needs to be adjusted. That is, the atmospheric pressure bubble at different altitudes and the saturated steam pressure when the water temperature is higher than 20 degrees Celsius. However, when the water temperature is below 20 degrees Celsius, the saturated steam pressure can be ignored.
4. From the perspective of pipeline construction technology, the suction pipeline has strict airtightness, and no steam or water seepage is allowed, otherwise it will damage the vacuum value at the inlet pipe of the chemical pump and reduce the water flow of the chemical pump. Can't pump water. Therefore, it is necessary to do a good job of pipe sockets to ensure the construction quality of pipe connections.
https://www.wxxjyby.com/