Plastic spring and full-plastic pump core

The utility model relates to a plastic spring and an all-plastic pump core, which are characterized in that the all-plastic pump core comprises a pump body, a main column, a lock cover, an auxiliary column, a piston and a valve plate are arranged on the pump body, and the all-plastic pump core further comprises the plastic spring; the plastic spring comprises a first supporting part, a second supporting part and an elastic part; one end of the elastic part is connected with the first supporting part, and the other end of the elastic part is connected with the second supporting part; a first cavity is formed in the first supporting part; a second cavity capable of accommodating the first supporting part is formed in the second supporting part; the first cavity is communicated with the second cavity; the pump core has the advantages that the plastic spring can replace a metal spring to be applied to the pump core so as to be convenient to recycle, and potential safety hazards are reduced. 本实用新型涉及一种塑料弹簧及全塑料泵芯，其技