Bearing water-proof mechanism of water-cooling single screw compressor

Abstract

The invention discloses a bearing water-proof mechanism of a water-cooling single screw compressor, comprising a bracket shaft, a bearing, a bearing seat, a sealed inner ring and a sealed outer ring, wherein, the sealed inner ring and the inner wall of the bearing seat form a primary radial maze sealing structure, and the sealed outer ring and the sealed inner ring form a secondary radial maze sealing structure; the upper part of an upper end head on the sealed outer ring extends into the cover slot of the sealed inner ring; the outer wall body of the cover slot, the cover slot and the upper end head on the sealed outer ring form an axial maze sealing structure; the outer wall body of the cover slot, the outer wall of the upper end part of the sealed outer ring and the inner wall of the bearing seat surround to from a ponding slot, and the bearing seat is provided with a drainage path communicated with the ponding slot; the inner wall of the bearing wall is provided with a water retaining cushion whose inner ring is provided with an airtight ring slot; the inner ring of the water retaining cushion and the outer wall of the lower end part of the sealed inner ring form a third-level radial maze sealing structure, and the water retaining cushion is provide with a water collecting tank and a water discharging tank for discharging water. The invention has the advantages of favourable sealing and anti-leakage effect and favourable assembly and disassembly performance and is favourable for ensuring the service life of the bearing and improving the service reliability of the product.

Description

technical field [0001] The invention relates to an upper sealing part of a single-screw gas compressor, in particular to a bearing waterproof mechanism of a water-cooled single-screw compressor. Background technique [0002] In the existing domestic single-screw compressor industry, there is no single-screw compressor with water cooling mode. After long-term research and testing, the applicant successfully trial-produced a water-cooled single-screw compressor, which uses water to cool the compressed gas in the compression chamber composed of a screw mechanism and a star wheel, which breaks away from the single-screw compression of the prior art The machine has always used oil to cool the compressed gas in the compression chamber formed by the screw mechanism and star wheel. In the long run, it eliminates the need to replace the cooling oil, has the advantages of low maintenance cost and environmental protection, and is in line with modernization. production requirements. H...

AI Technical Summary

Problems solved by technology

However, when water leakage occurs in parts such as mechanical seals, it is inevitable that cooling water will enter the first-stage radial labyrinth seal structure and the second-stage radial labyrinth seal structure. channel, however, the leaking cooling water will always seep downward and cross the water inlet of the drainage channel, so as to penetrate into the bearing, weaken the lubrication effect of the bearing, cause the bearing to fail or shorten the service life drastically, and reduce the reliability of the product , and even lead to fatal damage to the compressor, resulting in economic losses

At the same time, in the structure disclosed in the above-mentioned patent, the sealing outer ring is fixed by a circlip for a hole. The assembly and disassembly of the outer ring is troublesome, especially in the maintenance process, because the bearing is locked by rust, it is inconvenient to disassemble the bearing with tooling, and the assembly and disassembly efficiency is low

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