High-precision spiral mechanical sealing device

Abstract

The invention discloses a high-precision spiral mechanical sealing device, and relates to the technical field of mechanical sealing devices. The high-precision spiral mechanical sealing device particularly comprises a static ring, a first movable ring, a second movable ring and a rotating shaft, an insertion groove is formed in the middle of the static ring in a vertical penetrating mode, ring grooves are formed in two sides of the interior, close to a center line, of the static ring, the first movable ring is installed at the left end of the static ring, a first movable ring threaded groove is formed in the surface of the connection end of the first movable ring and the static ring, the second movable ring is arranged at the right end of the static ring, a second movable ring threaded groove is formed in the outer wall of the connection end of the second movable ring and the static ring, and the rotating shaft transversely penetrates through the inside of the static ring, the first movable ring and the second movable ring respectively. The high-precision spiral mechanical sealing device is provided with the first movable ring and the second movable ring, the two movable rings arearranged on two sides of the static ring, the two sides of the static ring are sealed, the sealing performance is guaranteed, the stability of the mechanical seal is greatly improved, and the mechanical sealing device is convenient to repair and replace.

Description

technical field [0001] The invention relates to the technical field of mechanical sealing devices, in particular to a high-precision spiral mechanical sealing device. Background technique [0002] Mechanical seal refers to at least one pair of end faces perpendicular to the axis of rotation, under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, and the cooperation of the auxiliary seal, it is a device that prevents fluid leakage and is formed by keeping fit and sliding relative to each other. To put it simply, a mechanical seal is a shaft sealing device for a rotating machine, which is very effective in sealing shaft parts. [0003] A mechanical seal is generally composed of a moving ring, a static ring, a cooling device and a compression spring. [0004] The split-type plug-in screw mechanical seal device disclosed in the Chinese invention patent application publication specification CN210423710U, although the split-typ...

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Problems solved by technology

[0004] The split-type plug-in screw mechanical seal device disclosed in the Chinese invention patent application publication specification CN210423710U, although the split-type plug-in screw mechanical seal device solves the problem of narrow space for transformation in the bearing bush of the rotating machine, high oil level, and high oil pressure operation The problem of oil leakage can work in high temperature and high dust environment without oil leakage. However, the split-type plug-in screw mechanical seal device adopts single-sided sealing, and the gap between the dynamic and static rings is large, and the length After a long period of use, the dynamic and static rings are very easy to loosen, which seriously affects the use effect of the entire mechanical seal.

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