Carbon fiber packing is suitable for the industry, medicine, paper, chemical fiber, fine chemicals, etc. In the operation where pollution is not allowed, many people do not know much about the installation of carbon fiber packing. Let's analyze it below: Mechanical seals common sense Mechanical seal requirements for machine accuracy (taking pump mechanical seals as an example) 1 The radial runout tolerance of the shaft (or bushing) on ​​which the mechanical seal is installed is not more than 0.04 to 0.06 mm. 2 The axial movement of the rotor does not exceed 0.3 MM. 3 The positioning end face of the sealing cavity combined with the sealing end cap shall have a maximum runout tolerance of not more than 0.04~0.06MM on the surface of the shaft (or bushing). Second, the confirmation of the seal 1 confirm that the installed seal is consistent with the required model. 2 Before installation, carefully compare with the final assembly drawing, and the number of parts is complete. 3 The mechanical seal is driven by a parallel spring. The spring has left and right rotations, which must be selected according to the direction of rotation of the shaft. The installation method varies with the type of mechanical seal and the type of machine, but the installation methods are almost the same. The installation steps and precautions are as follows: 1. When the installation size is determined, it should be guaranteed according to the product manual or sample. Installation dimensions for mechanical seals. 2. Before loading, the shaft (sleeve sleeve) and gland should be free of burrs and the bearing condition is good; the seal, shaft, seal chamber and gland should be cleaned. In order to reduce the frictional resistance, the mechanical seal on the shaft should be thinly coated with a layer of oil for lubrication. Considering the compatibility of the rubber O-ring, if it is not suitable for oil, it can be coated with soapy water. The floating static ring does not have an anti-rotation pin structure. It should not be oiled. The gland should be installed dry. 3. Install the static ring and the gland on the shaft first, taking care not to touch the shaft, and then load the moving ring assembly. The set screws of the spring seat or the drive base should be tightened evenly several times. Before the gland is fixed, the compensating ring is manually pressed for axial compression. After the loosening, the compensating ring can automatically spring back without jamming, and then the gland bolt is evenly locked.
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