| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil injection type screw compressor capable of improving oil separating efficiency. SOLUTION: An oil injection type screw compressor is provided with an outer casing 21 for surrounding a bearing part on a discharge port 12 side of a compressor main body 1 in a state where it is shut off from a suction port 11, an oil separating element 22 composed of an inner part 22A and an outer member 22B partitioned from each other by an annular partition plate 26, and for dividing it into a space 27 on the compressor main body 1 side and a space 28 on the opposite side to the compressor main body, a first discharge pipe 23 for guiding compressed gas discharged together with oil from the discharge port 12 to the inner part, a shield plate 24 for shutting off the inner part 22A from the space 27 on the compressor main body 1 side, and a second discharge pipe 25 perforating the outer casing 21 for covering the oil separating element 22 and the space 28 on the opposite side to the compressor main body, and for guiding compressed gas allowed to flow from the space 28 on the opposite side to the compressor main body into the space 27 on the compressor main body side to the outside.
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