Automatic balance adjustment structure for hydraulic oil mass of diaphragm pump

The utility model discloses an automatic balance adjustment structure for hydraulic oil mass of a diaphragm pump, which comprises a diaphragm and a guide sleeve arranged in a diaphragm hydraulic chamber, wherein a slidable guide cylinder is arranged in the guide sleeve in a clearance fit way; one end of the guide cylinder is communicated with the diaphragm hydraulic chamber through the guide sleeve; the other end of the guide cylinder is connected onto the diaphragm and can horizontally slide in the guide sleeve along with the expansion and the contraction of the diaphragm; a first oil supplement hole arranged on the upper part and a first oil extraction hole arranged on the lower part are arranged on the guide cylinder; a second oil supplement hole arranged on the upper part and a second oil extraction hole arranged on the lower part are correspondingly arranged on the guide sleeve; the second oil supplement hole is connected to the outer part above a hydraulic cylinder body through an oil supplement channel