Sealing structure for plunger hole at fluid end of fracturing pump

The utility model relates to the technical field of oil exploitation, in particular to a fracturing pump fluid end plunger hole sealing structure which comprises a valve box body, a fracturing fluid discharge port and a plunger hole, multiple sets of springs are symmetrically connected to the two sides of a positioning shaft sleeve, a second sealing gasket is movably connected to one side of a second rotating ring in a clamped mode, and a third sealing gasket is connected to the other side of a second rotating ring in a clamped mode. An oil injection pipe is arranged in the valve box body in a penetrating mode, and an oil outlet pipe is arranged in the valve box body in a penetrating mode. According to the plunger hole lubricating device, a spring and an oil injection pipe are arranged, continuous elastic pressure can be continuously applied to a first sealing gasket and a second sealing gasket through the spring, the sealing effect of the sealing packing and the connecting and installing stability of a seali