Problems that should be paid attention to when mechanical seal manufacturers introduce their use

Date of issue: 2019-06-18 Author: Dongtai Guangming Mechanical Seal Co., Ltd Click:

Mechanical seal manufacturer Introduce the problems that should be paid attention to in use

1. Precautions during installation

a、 Pay great attention to avoid installation deviation during installation

(1) The gland shall be tightened after the alignment of the coupling. The bolts shall be evenly supported to prevent the end face of the gland from deflecting. Check each point with a feeler gauge, and the error shall not be greater than 0.05 mm.

(2) Check the fit clearance (i.e. concentricity) between the gland and the outer diameter of the shaft or shaft sleeve. The circumference should be even. Use a feeler gauge to check that the tolerance of each point is not more than 0.01mm.

b、 The spring compression shall be carried out according to the regulations, and it is not allowed to be too large or too small. The required error is 2.00mm. If it is too large, the end face pressure will be increased, and the end face will be worn at another speed. If it is too small, the specific pressure will be insufficient and the sealing effect will not be achieved.

Mechanical seal manufacturer

c、 The movable ring shall be able to move flexibly on the shaft after installation, and it shall spring back automatically after pressing the movable ring against the spring.

2. Precautions during disassembly

a、 When disassembling the mechanical seal, be careful. Never use a hammer or flat shovel to avoid damaging the sealing elements. It can be used as a pair of steel wire hooks to extend into the notch of the transmission seat in the direction of self financing and pull out the sealing device. If scaling cannot be removed, it shall be cleaned before removal.

b、 If mechanical seals are used at both ends of the pump, take care of each other during assembly and disassembly to prevent neglect of one thing and loss of another.

c、 For the operated mechanical seal, if the gland is loose and the seal moves, the moving and stationary ring parts must be replaced and should not be tightened again for further use. Because the original running track of the friction pair will change after the sample movement, the sealing of the contact surface will be easily damaged.