Rotary sealing device
A technology of rotary seal and rotary seal ring, which is applied to engine seals, engine components, mechanical equipment, etc., can solve problems such as leakage, affecting motor reliability and service life, and achieve improved sealing performance and reliability and service life Effect
Inactive Publication Date: 2014-08-13
XIANGTAN ELECTRIC MFG CORP LTD
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Problems solved by technology
However, the problem with this sealing device is that there is a certain leakage between the static sealing ring and the rotating sealing ring when it is rotating, which affects the reliability and service life of the motor.
Method used
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Embodiment Construction
[0010] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0011] Referring to the accompanying drawings, a rotary sealing device includes a rotating shaft 1, a housing 6, an end cover 5, an O-shaped sealing ring 3, a flat key 4, an adjusting nut 8, bolts 11, a static sealing ring 2, a rotating sealing ring 7, a spring 9 and spring seat 10, the end cover 5 is fixedly connected to the outer side of the casing 6, the inner side of the end cover 5 is provided with a concave platform along the shaft hole, the static sealing ring 2 is loosely connected to the inner side of the end cover 5 with bolts 11, and the contact end of the static sealing ring 2 One side of the cover 5 is provided with a boss along the shaft hole, and the boss is matched with the concave platform of the end cover 5, and is provided between the contact surface of the end cover 5 and the static sealing ring 2, and between the contact surface of t...
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The invention relates to a rotary sealing device which comprises a stationary sealing ring and a rotary sealing ring, wherein the rotary sealing ring is attached to the stationary sealing ring. The rotary sealing device is characterized in that a curved groove is formed in the sealing surface of the rotating sealing ring which is attached to the stationary sealing ring, the curved groove is a rotary groove which is inclined inward to extend from the external circle of the rotary sealing ring and is not connected with the inner circle of the rotary sealing ring, sealed media which enter a space between the attached surfaces of the rotary sealing ring and the stationary sealing ring are centrifugally thrown out along with the curved groove during rotation, and the inclined direction of the curved groove is consistent with the rotary direction of the rotary sealing ring. According to the rotary sealing device, the curved groove is formed in the sealing surface of the rotating sealing ring, so that the sealed media which try to pass through a static pressure sealing area flows to the outer circumference of the sealing end surface to be discharged outward, thereby forming a high-pressure area relative to the sealed media on the external circle of the sealing end surface and preventing the sealed media from passing through the high-pressure area, the sealing performance and the reliability of the device are greatly improved, and additionally, the service life of the device is prolonged.
Description
technical field [0001] The invention relates to a rotary sealing device. Background technique [0002] The motors, generators and other equipment widely used in modern industrial production activities are inseparable from the sealing device, especially for large motors, which are cooled by liquid or gas inside, and the sealing device must ensure that the fluid inside the casing cannot leak out. Patent No. 2013206791002 "A Rotary Sealing Device" discloses a rotary sealing device, which includes a rotating shaft, an end cover, a stationary sealing ring, a rotating sealing ring, an O-ring and a spring. Inside the end cover, the rotating sealing ring interferes Fitted on the rotating shaft, a spring is provided inside the rotating sealing ring, the pressure of the spring is greater than the thrust required to push the rotating sealing ring to move axially, and a stationary sealing ring is provided outside the rotating sealing ring, between the stationary sealing ring and the end...
Claims
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IPC IPC(8): F16J15/16
Inventor杨正陈雷雷雄徐勤文曾文鄂
OwnerXIANGTAN ELECTRIC MFG CORP LTD