Negative-pressure filling valve

Abstract

The invention discloses a negative-pressure filling valve. The negative-pressure filling valve comprises a valve base, a lower valve body is elastically and movably connected with the valve base, a valve opening is formed in the bottom of the lower valve body, a corrugated pipe is arranged inside the valve base, and the upper and lower ends of the corrugated pipe are hermetically fixed to the valve base and the lower valve body respectively; an inner cavity of the corrugated pipe is communicated with an inner cavity of the valve base above the corrugated pipe to form an upper valve cavity, anda lower valve cavity is formed by an inner cavity of the lower valve body and communicated with the valve opening; the upper end of a valve element stretches out of the top of the valve base, an airreturn pipe is connected to the bottom of the valve element, a lower port of the air return pipe is located outside the valve opening, the valve element is hollow to form an air channel, the air channel is communicated with the air return pipe, a sealing cover is fixedly arranged on the valve element, and a clamping and stopping part is arranged on the inner wall of a lower port part of the corrugated pipe. Under the effect of an elastic part, the clamping and stopping part of the corrugated part can be hermetically clamped and stopped on the sealing cover of the valve element, and then the upper valve cavity and the lower valve cavity are separated. The negative-pressure filling valve has the advantages that the structure is simplified, the sealing effect is good, and filling of various kinds of feed liquids is adapted to.

Description

technical field [0001] The invention relates to the technical field of liquid filling equipment, in particular to a negative pressure filling valve. Background technique [0002] The negative pressure filling valve can realize high-speed filling, so it is widely used in various filling production lines. There is a common problem in traditional negative pressure filling valves: the sealing effect between the moving parts and the moving parts of the filling valve is poor. The parts, the fixed components include: the valve seat, and the guide sleeve installed on the valve seat, etc. [0003] In order to better meet the fast-growing filling needs, our company has developed a new negative pressure filling valve to meet the filling needs of different material liquids, such as wine, vinegar and so on. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a negative pressure filling valve, which has a wide application range,...

AI Technical Summary

Problems solved by technology

There is a common problem in traditional negative pressure filling valves: the sealing effect between the moving parts and the moving parts of the filling valve is poor. The parts, the fixed components include: the valve seat, and the guide sleeve installed on the valve seat, etc.

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