The difference between the outer circulation and the inner circulation of the water blasting machine

Water blasting machine is a kind of sand blasting machine, which is widely used. According to the circulation mode, water blasting machine can be divided into external circulating water blasting machine and internal circulating water blasting machine.

The main feature of the external circulating water sandblasting machine is that the high-pressure pump has an inlet pipe, a high-pressure pipe and a return pipe. After the shut-off gun stops working, the high-pressure water automatically flows into the "reservoir" through the return pipe. The high-pressure pump is always new water circulation, and the high-pressure pump (1450 rpm) speed is high and will not be hot, so the performance is correspondingly stable , The life span is naturally extended.

The main feature of the internal circulating water sandblasting machine is that the return pipe is connected to the inlet pipe. After the operation is stopped, the high-pressure water always circulates in the high-pressure pump. The high speed quickly causes high temperature, which is easy to cause high temperature damage to the pump head, and severely causes the pump head to be tightly sealed. , Pressure can not go up.

Whether the external circulating water sandblasting machine is better or the internal circulating water sandblasting machine is better, the pumps are all imported pumps, depending on the purpose and configuration.