Water pumping structure and water pick

Abstract

The utility model provides a water pumping structure and a water pick. The water pumping structure comprises a pump body, a water inlet and a water outlet, the piston mechanism comprises a piston, a first sleeve, a second sleeve and an oil seal, one end of the second sleeve is fixed in the pump body, one end of the piston is slidably arranged in the second sleeve, the piston is fixedly sleeved with the first sleeve, and the oil seal is fixed in the pump body through the second sleeve; a driving mechanism; and a gap is formed between the outer peripheral wall of the first sleeve and the inner peripheral wall of the pump body. According to the water pumping structure, the piston and the pump body are of a non-contact plunger structure and do not make contact with each other, so that pump body friction cannot be caused when the piston moves back and forth, noise can be lowered, and loss is small; the first sleeve is a metal part, is small in friction coefficient, good in surface smoothness, small in loss and high in working efficiency, and can effectively reduce the loss; the second sleeve plays a role in fixing the oil seal and guiding the movement of the piston, water leakage of the pump body can be prevented, short circuit of a circuit board is avoided, and the service life of the pump body is prolonged.

Images