Change-over valve capable of realizing pumping and aerating functions

Abstract

The invention discloses a change-over valve capable of realizing pumping and aerating functions and a manufacturing method thereof. The change-over valve is characterized by consisting of a body and a rotor, wherein both the body and the rotor are provided with one-way valves which only allow gas to pass through in one direction; the rotor is used for changing the one-way valve into a reversible valve by rotating; the rotor is provided with an inverted-U-shaped three-way gas path; and switching of the pumping or aerating function of an inflator can be realized by rotating the rotor by 180 degrees to change the connection with a gas path of the body part. The inflator is designed by using the design thought of the change-over valve, so that the inflator becomes a dual-purpose inflator with aerating and pumping functions. The inflator can have aerating and pumping functions by connecting the change-over valve with a barrel with a piston function.

Description

technical field [0001] The invention relates to a dual-purpose valve capable of realizing pumping-charging conversion function and a manufacturing method thereof, belonging to the field of manufacturing industry. Background technique [0002] In daily life and work, there are many occasions that need to use inflation and air extraction. There are air compressors and common pumps for inflation, and vacuum pumps are usually used for air extraction. It is rare to use one instrument to achieve both functions of pumping and filling at the same time. The common inflator can only be used for inflating but not for pumping, because it uses a leather cup to push the gas, and the leather cup has no sealing effect and loses the suction function when used for pumping. If the leather cup is changed to a piston, the defect that the leather cup can only transport gas in one direction can be solved, but because the valves used in the gas cylinder are all one-way valves, it is impossible to ...

AI Technical Summary

Problems solved by technology

Common inflators can only be used for inflation but not for suction, because it uses a leather cup to push gas, and the leather cup does not have a sealing effect when used for pumping, so it loses its suction effect

If the leather cup is changed to a piston, it can solve the defect that the leather cup can only transport gas in one direction, but because the valves used in the gas cylinder are all one-way valves, it is impossible to change the direction of pumping and charging

Even if the one-way valve is changed to a valve that can change the direction, the dual-purpose function of pumping and charging cannot be realized because the original gas circuit still cannot meet the requirements of supplementing gas or exhausting gas when pumping and charging.

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