The utility model provides a case sealing structure, which comprises a box body, the box body is provided with a through hole for the tube body passes through the through hole, Weili end aperture, the outer end of large aperture diameter hole and the outer end of the inner wall of the hole with internal thread section, gland Center has a hole for tube through wear the tubular portion comprises an annular and tubular molding in the tubular part is larger than the outer diameter and the tubular section of the blocking part, external threads matched with the tubular portion on the outer peripheral surface and the inner thread section, in the through hole is provided with a sealing ring, sealing ring the outer ring and the inner wall of the through hole, the inner ring against the jagged and the tooth top abutted on the tube wall, the gland is screwed into the through hole and is screwed into the direction of the front end of the cover abuts on the sealing ring. The sealing ring is installed to the hole diameter at the step surface directly, the gland is screwed into the through-hole. At the same time, the direction of the front end cover is screwed into the abutting on the sealing ring, convenient installation, convenient disassembly for maintenance; the inner pipe wall and cable forming at least two sealing surface, to prevent water or dust from entering the box body, improves the seal between the box body and the tube.
【技术实现步骤摘要】
机箱密封结构
本技术涉及光电设备领域,具体为一种机箱密封结构。
技术介绍
装有光电倍增管的放射性检测器机箱需防水防尘和避光,现有技术均为对机箱采用单层密封进行防水防尘,同时对光电倍增管采用单独密封进行避光。现有技术中,光电倍增管与箱体上通孔孔壁之间的的密封圈结构一般是普通U型,光电倍增管的管体安装、检修或使用时,光电倍增管管体移动,水或粉尘极易进入到箱体内,光电倍增管的单独密封导致光电倍增管固定结构较为复杂,安装麻烦,也相应增加了成本。
技术实现思路
本技术的目的是提供一种机箱密封结构,不仅安装方便,而且提高了箱体与管体之间的密封性。为了实现上述目的,采用的技术方案为:一种机箱密封结构,包括箱体,所述箱体上开设有供管体穿出的通孔,所述通孔为里端孔径小、外端孔径大的变径孔且外端的孔内壁上有内螺纹段,压盖中心具有供管体穿过的穿孔,其包括圆管状的管状部和成型在所述管状部一端且外径大于所述管状部的环形阻挡部,所述管状部的外周面上设有与所述内螺纹段相配合的外螺纹,在所述通孔内设有密封圈,所述密封圈的外圈与通孔内壁贴靠、内圈呈锯齿状且其齿顶抵靠在管体管壁上,压盖旋入通孔内且压盖旋进方向的前端部抵靠在密封圈上。与现有技术相比,本技术的技术效果为:通过在管状部的外周面以及通孔外端的孔内壁上布置有螺纹,将密封圈安装至通孔变径处台阶面上,直接将压盖旋入通孔内,旋紧的同时,压盖旋进方向前端端部抵靠在密封圈上,安装方便快捷,便于拆卸后进行维护;将密封圈的内圈布置呈锯齿状且其齿顶抵靠在管体管壁上,内圈与管体管壁至少形成两道密封面,防止水或粉尘进入箱体内,提高了箱体与管体之间的密封性。附图说 ...
【技术保护点】
一种机箱密封结构,其特征在于:包括箱体(20),所述箱体(20)上开设有供管体(1)穿出的通孔(21),所述通孔(21)为里端孔径小、外端孔径大的变径孔且外端的孔内壁上有内螺纹段,压盖(30)中心具有供管体(1)穿过的穿孔,其包括圆管状的管状部(301)和成型在所述管状部(301)一端且外径大于所述管状部(301)的环形阻挡部(302),所述管状部的外周面上设有与所述内螺纹段相配合的外螺纹,在所述通孔(21)内设有密封圈(10),所述密封圈(10)的外圈(15)与通孔(21)内壁贴靠、内圈(14)呈锯齿状且其齿顶抵靠在管体(1)管壁上,压盖(30)旋入通孔(21)内且压盖(30)旋进方向的前端部抵靠在密封圈(10)上。
【技术特征摘要】
1.一种机箱密封结构,其特征在于:包括箱体(20),所述箱体(20)上开设有供管体(1)穿出的通孔(21),所述通孔(21)为里端孔径小、外端孔径大的变径孔且外端的孔内壁上有内螺纹段,压盖(30)中心具有供管体(1)穿过的穿孔,其包括圆管状的管状部(301)和成型在所述管状部(301)一端且外径大于所述管状部(301)的环形阻挡部(302),所述管状部的外周面上设有与所述内螺纹段相配合的外螺纹,在所述通孔(21)内设有密封圈(10),所述密封圈(10)的外圈(15)与通孔(21)内壁贴靠、内圈(14)呈锯齿状且其齿顶抵靠在管体(1)管壁上,压盖(30)旋入通孔(21)内且压...
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