Anti-corrosion anti-dry-grinding shaft seal
A shaft sealing, anti-dry wear technology, applied in the parts of pumping devices for elastic fluids, non-variable-capacity pumps, machines/engines, etc. Leakage and other problems, to achieve the effect of simple sealing structure, saving manufacturing cost, convenient maintenance and installation
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Embodiment 1
[0052] Example 1: as image 3 , 4 As shown, a kind of anti-corrosion and anti-dry grinding centrifugal pump, the shaft seal is installed on the main shaft 6 of the centrifugal pump, the impeller 7 is installed on the main shaft 6, the shaft seal includes a seal box assembly, a mechanical seal, and the mechanical seal includes a static ring 2, a moving ring 1. The sealing box assembly is fixed to the pump casing 4, the main shaft 6 is sleeved with a shaft sleeve 3, the moving ring 1 is clamped and fixed between the shaft sleeve 3 and the impeller 7, and the moving ring 1 is located in the pump cavity and is in contact with the conveyed material and liquid , the sealing box assembly includes a sealing box 9, a sealing box pressure rear cover 10 connected separately with the sealing box 9, a static ring push elastic ring 8 placed in the sealing box 9, and the sealing box pressure rear cover 10 is provided with an inlaid static ring top Push the concave-convex ring 10.1 of the el...
Embodiment 2
[0053] Example 2: as Figure 5 As shown, referring to Embodiment 1, other features remain unchanged, the static ring pushing elastic ring 8 is a straight cylindrical shape with corrugations, and a steel compression ring 20 is provided internally.
Embodiment 3
[0054] Example 3: as Image 6 As shown, referring to Embodiment 1, other features remain unchanged. The outer peripheral surface of the rigid partition plate 58 is provided with two annular grooves, and an O-ring and a lip-shaped sealing ring are arranged in the annular groove.
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