currentgateWhen the valve body, bonnet and various parts are in good condition, only the sealing surface is slightly deformed or corroded.valveCan not be used.Repairing these valves cannot be done by non-professional factories, so it causes great waste.Therefore, the gate valve that the user wants is: the valve seat and the sealing surface of the valve plate are not easy to deform, corrosion-resistant, and the vulnerable sealing material can be replaced.When the valve plate is opened and closed, there should be no friction with the sealing surface or minimize friction, so as to avoid the various deficiencies of the soft sealing gate valve.
XNUMX. The purpose of the invention:
After solving the corrosion or deformation of the sealing surface of the valve seat and the valve plate, the valve plate can automatically compensate and press the cover tightly and with theSoft seal gate valveThe problem of automatic pressure balance between the pressures can solve the problem that the soft sealing material is frictionally damaged and the sealing surface is damaged. Since the sealing sleeve of the gate valve can be replaced, the use of the valve is greatly increased.
XNUMX. Practical scope:
通径φ50-φ400mm，压力2.5-4.0MPa，小于200℃的各种常温液体
XNUMX. Technical scheme:
The valve isDouble parallel gate valve, The inlet sealing method, the inlet valve plate is composed of a sealing sleeve and a relief valve plate as the main sealing gate.The sealing sleeve and the relief valve plate move synchronously but are not connected. The pipeline pressure is transmitted to the valve seat on the outlet surface through the relief valve plate and the leveling arm, which will greatly improve the bonding force of the soft sealing surface.The valve plate is covered with a corrosion-resistant rubber sealing sleeve.During the opening and closing process, the soft sealing material keeps a certain distance from the valve seat, so that the soft sealing material can work in an environment without friction and pressure.The sealing sleeve isolates the liquid transported in the pipeline from the parts in the valve core, and prevents the corrosion of the liquid and the blockage of impurities.The sealing material of this valve is very convenient to replace, so the service life is more than 5 times that of general gate valves.