Vacuum pump and diaphragm pump seal the correct use of the method

[Asia Pump Network News] mechanical seal is good or bad, whether the normal use will affect the vacuum pump, diaphragm pump normal operation, affecting the pump life. The following is the vacuum pump, diaphragm pump mechanical seal installation and use requirements: vacuum pump and diaphragm pump the correct use of mechanical seal 1, the mechanical seal accuracy of the machine requirements: (mechanical seal vacuum pump, for example) (1) rotor axial channeling Moving no more than 0.3mm. (2) The tolerance of the beating tolerance on the surface of the shaft (or sleeve) to be combined with the sealing end face of the sealing cavity and the sealing end cap should not exceed 0.04 ~ 0.06mm. (3) The radial runout tolerance of the shaft (or sleeve) on which the mechanical seal is to be mounted shall not exceed 0.04 to 0.06 mm. 2, seal confirmation: (1) before installation to carefully control the assembly diagram, the number of parts is complete. (2) The mechanical seal with and spring drive, the spring has left and right spin points, according to the rotation of the shaft to choose. (3) Confirm that the seal installed is the same as the required model number. 3, the installation of seals: Installation method with the mechanical seal type, the type of machine varies, but its installation essentials are almost the same, the installation steps and precautions are as follows: (1) to determine the installation dimensions: installation, Should press the product manual or sample, to ensure the installation of mechanical seal size. (2) Prior to loading, the shaft (sleeve) and gland should be free from burrs and the bearing is in good condition; the seals, shaft, seal chamber and gland should be clean. In order to reduce the frictional resistance, the shaft should be coated with a thin layer of oil on the mechanical seal to lubricate. Considering the miscibility of rubber O-rings, soapy water should be applied if oil is not suitable. Floating static ring without anti-rotation of the structure should not be oiled, should be dry-loaded gland. (3) Install the static ring and the gland together on the shaft first, be careful not to touch the shaft, then insert the moving ring assembly. Spring seat or drive seat set screws should be evenly tightened several times. Before the gland is not fixed, push the compensation ring by hand for axial compression. After the release, the compensation ring can automatically rebound without jamming, and then the gland bolt is evenly locked. (Editor: Li Juan QQ:) Recommended reading: Agent procurement pneumatic diaphragm pump mechanical seal installation and use