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Reversing valve element

2014 
The invention discloses a reversing valve element. The reversing valve element comprises a valve sleeve and a valve rod. The valve rod is located in the valve sleeve and is coaxial with the valve sleeve. A first cavity is axially formed in the front part of the valve rod, and a second cavity is axially formed in the rear part of the valve rod. A connecting hole communicated with the first cavity is formed in the valve rod. An elastic resetting device stretching into the first cavity is arranged at the front end of the valve sleeve, and a handle assembly stretching into the second cavity is arranged at the rear end of the valve sleeve. The interior of the elastic resetting device is communicated with the first cavity. An annular communicating groove is formed in the outer wall of the valve rod. A pressure oil port, a first working oil port, a second working oil port and an oil control port are sequentially formed at intervals in the valve sleeve from front to back. The reversing valve element has the advantages that both the hydraulic reversing function and the manual reversing function are achieved, and normal work can be guaranteed through the manual reversing function when the hydraulic reversing function fails; besides, the valve rod in the reversing valve element will not be resisted by hydraulic oil in the axial direction, manual reversing can be achieved with a little strength, and therefore use and operation are convenient.
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