| abstract |
The invention provides a wear-reducing valve sealing structure and a method thereof, belonging to the field of valves. The sealing structure includes an upper loading sealing device, a lower loading sealing device and a driving device. The upper loading sealing device and the lower loading sealing device cooperate with each other under the action of the driving device, so that when the valve stem moves, the loading device unloads the packing and reduces the The packing of the sealing device is worn out, which prolongs the service life of the sealing device; when the valve is about to be fully opened and about to be closed, the packing is in a state of gradual loading; when the valve is fully opened and closed, the packing is in a fully loaded state to achieve a good seal Effect. |