Cooling liquid recovery device of deep hole boring machine

The invention belongs to the technical field of machining equipment, and particularly relates to a cooling liquid recovery device of a deep hole boring machine. A liquid storage cavity and an impurity storage cavity are formed in the recycling box. A servo motor is fixedly connected to the outer part of the recycling box; cooling liquid is filtered for the first time through an arranged first filter screen plate, when a rotating rod rotates till the first filter screen plate inclines, waste scraps and impurities on the first filter screen plate roll into an impurity storage cavity to be temporarily stored, and the situation that a spray head is blocked when the recycled cooling liquid is used for the second time is reduced; a first filter screen plate rotates along with a rotating rod to impact an impact rod, a plurality of metal balls and a knocking block collide with each other to vibrate and transmit the vibration to the first filter screen plate, the effect of vibration and impurity removal on the first f