专业售后●服务
1.全年无节假日,只要您需要我们服务。
2.根据客户需求提供上门安装服务。
3.产品质量问题,七天免费调换。
4.使用户如遇任何安装问题,请随时联系我们
Mechanical seal is the main cause of leakage of submersible pump, but mechanical seal itself is a kind of precision component with high requirements, which has high requirements for design, machining and assembly quality. When using the mechanical seal, various factors of using the mechanical seal shall be analyzed to make the mechanical seal applicable to the technical requirements and service medium requirements of various pumps and have sufficient lubrication conditions, so as to ensure the long-term and reliable operation of the seal.
The mechanical seal, also known as the end face seal, has a pair of end faces perpendicular to the rotation axis. Under the action of fluid pressure and compensating the external elasticity of the machinery, the end faces rely on the cooperation of the auxiliary seal to keep fit with the other end and slide relatively, so as to prevent fluid leakage.
The leakage of mechanical seal accounts for more than 50% of all maintenance pumps. The operation of mechanical seal directly affects the normal operation of water pump. Generally, it is periodic leakage:
(1) The axial displacement of the pump rotor is large, the interference between the auxiliary seal and the shaft is large, and the moving ring cannot move flexibly on the shaft. After the pump is overturned and the dynamic and static rings are worn, the displacement cannot be compensated.
Countermeasures: when assembling the mechanical seal of the submersible pump, the axial displacement of the shaft should be less than 0.1mm, and the interference between the auxiliary seal and the shaft should be moderate. While ensuring the radial seal, the movable ring can move flexibly on the shaft after assembly (press the movable ring against the spring and spring back freely).
(2) Insufficient lubricating oil on the sealing surface causes dry friction or roughening of the sealing face.
Countermeasures: the lubricating oil level in the oil chamber shall be higher than the sealing surface of the moving and static rings.
(3) The rotor vibrates periodically. The reason is that the stator is not aligned with the upper and lower covers, or the impeller and main shaft are unbalanced, cavitation or bearing damage (wear), which will shorten the seal life and produce leakage.
Countermeasures: the above problems can be corrected according to the maintenance standards.
The above briefly introduces the causes of the leakage of the submersible pump and the corresponding solutions. If you encounter the above problems in your normal use, you can simply refer to the contents of the article and do a good job in maintenance to avoid affecting the use.