Dual-stage sealed filling head

Abstract

The invention discloses a dual-stage sealed filling head. The dual-stage sealed filling head comprises an upper cylinder body and a lower cylinder body; a piston rod is disposed in the lower cylinder body; a movable piston is arranged on the upper portion of the piston rod in a sleeving mode; a poppet valve is fixedly arranged on the movable piston in a sleeving mode; a clamping claw is disposed on the lower portion of the poppet valve in the circumferential direction of the poppet valve; a nested cylinder is fixedly disposed on the lower portion of the piston rod in a sleeving mode; a track lantern ring is positioned on the nested cylinder in a sleeving mode; a track groove matched with the clamping claw is formed in the track lantern ring; a large-opening sealing pad which is in match seal with the upper end face of a filling opening is fixed to the bottom of the nested cylinder; a lower piston core which moves up and down along an inner cavity of the piston rod is disposed in the inner cavity of the piston rod; a filling pipe core is disposed in the middle of the lower piston core; a main sealing pad which is in match seal with the inner stepped face of the filling opening is fixed to the bottom of the lower piston core. Positive pressure filling is performed on a main filling system through the lower piston core and the filling pipe core; vacuum detection of the main filling system is achieved through the main sealing pad; meanwhile, quantitative filling work is finished through combination of the clamping claw and the large-opening sealing pad. The dual-stage sealed filling head is simple in structure, convenient to operate and high in practicability, and the production and detection efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of automobile antifreeze filling, in particular to a two-stage sealing filling head. Background technique [0002] The existing filling head of automobile antifreeze usually has the following two types: 1. Quantitative filling head: the filling equipment or the filling head is equipped with a metering device, and the quantitative filling is carried out through the equipment or the filling head's own control device , The quantitative filling head generally does not seal the filled system. 2. Single-stage sealed filling head: the filling head is equipped with a single cylinder, slide valve, gripper and other components. When filling, the cylinder works to drive the gripper to clamp, and the end face of the filling port is tightly pressed The upper surface of the jug mouth, so as to seal the filled pot, so that the subsequent filling equipment can be vacuumed and pressure filled. When adding antifreeze to a c...

AI Technical Summary

Problems solved by technology

When adding antifreeze to a car with two main and auxiliary water tanks, it is impossible to fill the main and auxiliary water tanks in one clamping process

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