Will water overflow from the vent hole of an acid and alkali resistant idling vertical pump?

　　Will water overflow from the vent hole of the acid and alkali resistant idling vertical pump?

　　There is an air vent in the center of the pump body of the acid and alkali resistant idling vertical pump, under normal circumstances there will not be water from the air vent, as long as the pressure does not exceed the design of the upper line, there will be no water from the air vent.

　　The role of the exhaust hole on the pump body is the pump before the first start, to open the exhaust hole screw exhaust, the reason is that at the beginning, the pump and the pipeline is no water, the need for water, when the pipeline is full of air, easy to form an air section, so that the water can not enter the pump cavity, the pump will not be pumping, when the exhaust screw is opened, the balance of the air section of the pump system is broken, the water enters the pump, the pump can be pumped to the water.

　　When the working pressure of the acid and alkali resistant vertical pump exceeds the designed system pressure of the pump, the pump may overflow from the vent.

　　Reasons for pump working pressure overpressure:

　　1-1, Reason: the outlet is too high, no check valve; Solution: the outlet pipeline is too high, no check valve need to add check valve.

　　1-2, Reason: the liquid level is too high; Solution: the liquid level is higher than the pump body square plate, you can reduce the liquid level or raise the height of the pump.

　　Acid and alkali can be idle vertical pump can be idle reason is what?

　　Acid and alkali can idle vertical pump is a kind of centrifugal pump without seal, no mechanical seal contains neither dynamic mechanical seal, there is no static mechanical seal, there is no mechanical seal there is no seal friction, there is no seal friction, of course, there will be no mechanical seal heat problem. No heat will not burn the mechanical seal. Therefore, it can be idle.

　　In addition, as long as its discharge function is not blocked, the liquid, such as oxidizing gases or high pressure/high temperature use will also have gasification phenomenon, these corrosive acidic gases can also be discharged from the middle of the belly vent to reduce the damage to the bearings.

　　Relying on the action of the rotating impeller on the liquid to transfer the mechanical energy of the prime mover to the liquid, due to the role of acid and alkali vertical centrifugal pumps liquid from the impeller inlet to the outlet in the process of flow, its speed energy and pressure energy have been increased by the impeller discharged liquid through the pressure out of the room, most of the speed energy is converted into pressure energy, and then transported along the discharge piping, at this time, the impeller imports the formation of a vacuum due to the discharge of liquids or low-pressure At this time, vacuum or low pressure is formed at the impeller inlet due to liquid discharge, and the liquid in the suction pool is pressed into the impeller inlet under the action of liquid surface pressure/atmospheric pressure, and then the rotating impeller continuously sucks in and discharges the liquid.