Sealing device of vacuum moving element
A technology of moving parts and sealing devices, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as gas leakage, equipment performance decline, affecting sealing effect, etc., to reduce motion resistance, excellent sealing characteristics, prolong The effect of the service life
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Example Embodiment
[0039] Example 1
[0040] Figure 1 ~ Figure 5 Shows the specific structure diagram of this embodiment, such as figure 1 As shown, the vacuum moving part sealing device includes a moving part 1 and a sealing ring 3 matched with it. The inner hole wall of the inner hole 7 of the sealing ring 3 matched with the moving part 1 is provided with four annular storage grooves. 8. Both the inner hole wall and the storage groove 8 have a sealing grease layer 2; the outer wall of the sealing ring 3 is provided with four outer ring grooves 9, and each outer ring groove 9 is embedded with a sealing ring 4, the sealing ring 4 and the cavity The seal inner wall 5 is matched.
[0041] Such as figure 2 with Figure 4 As shown, the cross-sectional shape of the storage tank 8 is trapezoidal.
[0042] The cross-sectional shape of the outer ring groove 9 is semicircular.
[0043] Each outer ring groove 9 is embedded with a sealing ring 4.
[0044] The distance between the outer peripheral edges of every...
Example Embodiment
[0055] Example 2
[0056] The structure of this embodiment is the same as that of embodiment 1 except for the following features: Image 6 As shown, the inner hole wall and the surface of the storage tank 8 are also provided with a polytetrafluoroethylene coating 10.
[0057] The material of the sealing ring 3 is perfluoro rubber, and the material of the sealing ring 4 is silicone rubber.
Example Embodiment
[0058] Example 3
[0059] The structure of this embodiment is the same as that of the first embodiment except for the following features: the inner hole wall of the inner hole 7 of the sealing ring 3 that is matched with the moving part 1 is provided with seven annular storage grooves 8, the inner hole wall and the storage groove 8 has a sealing grease layer 2; the outer wall of the sealing ring 3 is provided with four outer ring grooves 9, and each outer ring groove 9 is embedded with a sealing ring 4, and the sealing ring 4 is matched with the inner sealing wall 5 of the cavity.
[0060] Such as Figure 7 As shown, the cross-sectional shape of the storage tank 8 is rectangular with a side length of 5 mm.
[0061] The cross-sectional shape of the outer ring groove 9 is semicircular.
[0062] The distance between the outer peripheral edges of every two adjacent storage tanks is 2mm, and the distance between the outer peripheral edges of every two adjacent outer ring grooves is also 2m...
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