Adjustable ultrasonic micro-jet nozzle array with minimal quantity lubrication

An adjustable ultrasonic micro-jet nozzle array with minimal quantity lubrication, comprising:

• an inlet conduit;
• a recycle conduit;
• and
• a cooling body having a microjet ejection assembly and a recycling assembly;
• wherein the cooling body comprises a microjet ejection chamber which is closed;
• the inlet conduit is provided at a top of the cooling body and communicates with the microjet ejection chamber;
• and the recycle conduit is located in the microjet ejection chamber, and connects the recycling assembly and an external vacuum machine;
• the cooling body comprises a first cover, a bottom plate and sidewalls which form the microjet ejection chamber;
• the microjet ejection assembly and the recycling assembly adjacent to each other are respectively located on the sidewalls;
• the microjet ejection assembly comprises a cooling fluid ejection body, a piezoelectric ceramic body, and a plurality of microjet nozzles with microjet holes;
• a plurality of first ejection holes spaced apart are arranged on the cooling fluid ejection body;
• and a plurality of second ejection holes spaced apart are arranged on the piezoelectric ceramic body;
• and
• the microjet nozzles, the first ejection holes and the second ejection holes have the same number, and have a one-to-one correspondence;
• and the microjet nozzles are sequentially inserted into the second ejection holes and the first ejection holes.