Shaft seal device of rotor pump
A shaft seal and rotor pump technology, applied to rotary piston/oscillating piston pump components, pump elements, machines/engines, etc., can solve the impact of shaft seal performance and shaft seal service life, and reduce the impact of fluid materials on machine seals The cooling effect of components, affecting the service life of the shaft seal of the rotor pump, etc., to improve the performance of the shaft seal, improve the service life, and prolong the service life
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[0031] Example 1
[0032] like figure 1 As shown, a shaft sealing device of a rotary lobe pump, the shaft 1 of the rotary lobe pump is fixedly connected with the impeller 2 as a rotor, and the shaft sealing device includes a mechanical seal seat 3 and a static ring 4, a movable ring seat 5 and a movable ring driven by it. 6. Both are cylindrical and sleeved on the outside of the shaft 1. The machine seal seat 3 is sleeved outside the moving ring seat 5 and is fixedly connected with the pump body 7. A cavity 28 is formed between the machine seal seat 3 and the moving ring seat 5. The inner side of the pump of the sealing seat 3 is the flange end connected to the pump body 7, and a plurality of connecting holes 22 are opened along the circumference of the flange end for fixed connection with the pump body 7; the outer side of the pump of the sealing seat 3 is closed with a smaller inner diameter. At the end, the static ring 4 is located in the inner cavity of the machine seal s...
Example Embodiment
[0043] Embodiment 2
[0044] like Figure 10 , Figure 11 As shown, on the basis of the first embodiment, a skeleton oil seal 20 is also arranged on the closed end of the mechanical seal seat 3 in this embodiment, and the others are completely the same as the embodiment. The inner ring of the skeleton oil seal 20 is in close contact with the shaft 1 of the rotor pump, and lubricating oil or cooling water is introduced into the sealed area to form an additional cooling and lubricating system. In this way, when there is no material in the pump, the dry grinding of the mechanical seal can be effectively prevented, and the service life of the rotor pump shaft seal can be further improved. In addition, a shaft sleeve can be added to the section where the skeleton oil seal 20 of the shaft 1 is located to prevent the shaft 1 from being rubbed by the lip of the skeleton oil seal 20 .
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