The invention relates to the technical field of ship propelling devices, in particular to a ship outboard engine propeller and a sealing structure thereof. The sealing structure is arranged in a shell on a marine outboard engine propeller, and an underwater propeller shaft is rotationally arranged in the shell. Comprising a sealing mechanism, the sealing mechanism comprises an oil seal ring and a disc spring, and a first ring groove, a second ring groove and a plurality of micro through holes are formed in the oil seal ring. The first annular groove and the underwater paddle shaft form an oil seal cavity, and the second annular groove, the underwater paddle shaft and the disc spring form a buffering cavity with the variable space size. The buffer cavity with the variable space size and the deformable disc spring can balance the pressure intensity, so that the pressure intensity in the oil seal cavity is positive pressure all the time, and external water is prevented from entering the oil seal cavity. Sealing oil in the oil sealing cavity enters the buffering cavity after being expanded, so that the sealing oil in the oil sealing cavity is prevented from overflowing outwards, and waste of the sealing oil is avoided. The invention provides a marine outboard engine propeller and a sealing structure thereof. The problem that sealing oil in an existing propeller is prone to leakage is solved.
本发明涉及船舶推进装置技术领域,具体涉及一种船用舷外机推进器及其密封结构。一种密封结构设置于船用舷外机推进器上的外壳内,外壳内转动设置有水下桨轴。包括密封机构,密封机构包括油封圈和碟簧,油封圈上开设有第一环槽、第二环槽和多个微通孔。第一环槽和水下桨轴形成油封腔,第二环槽、水下桨轴和碟簧形成空间大小可变的缓冲腔。空间大小可变的缓冲腔和可形变的碟簧能平衡压强,使得油封腔内的压强始终为正压,防止外界的水进入油封腔内。油封腔内的密封油在膨胀后进入缓冲腔内,防止油封腔内的密封油向外溢出,造成密封油的浪费。本发明提供一种船用舷外机推进器及其密封结构,以解决现有推进器内的密封油容易泄露的问题。
Marine outboard engine propeller and sealing structure thereof
一种船用舷外机推进器及其密封结构
2024-12-27
Patent
Electronic Resource
Chinese
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
Outboard outboard engine structure capable of changing underwater depth of propeller
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