JPH0425070U

JPH0425070U -

Info

Publication number: JPH0425070U
Application number: JP6672190U
Authority: JP
Priority date: 1990-06-22
Filing date: 1990-06-22
Publication date: 1992-02-28
Anticipated expiration: 2005-06-22
Also published as: JP2512848Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例によるメカニカ
ルシールの一部断面図、第２図は第２の実施例に
よるメカニカルシールの一部断面図、第３図ない
し第６図は従来例を示す図で、第３図はメカニカ
ルシールの断面図、第４図は第３図の一部の拡大
して示す断面図、第５図はメカニカルシールの断
面図、第６図は第５図の一部断面図である。１……ハウジング、３……回転軸、５……メイ
テイングリング、７……シールリング、９……ス
プリング、１５……Ｏリング、２１……コンプレ
ツシヨンリング、２９……Ｖパツキン、１０１，
２０１……環状溝、１０７，２０７……突起、１
１１，２１１……貫通孔、１１３，２１３……ス
ラリー。 FIG. 1 is a partial sectional view of a mechanical seal according to a first embodiment of the present invention, FIG. 2 is a partial sectional view of a mechanical seal according to a second embodiment, and FIGS. 3 to 6 are a partial sectional view of a mechanical seal according to a second embodiment. 3 is a sectional view of the mechanical seal, FIG. 4 is an enlarged sectional view of a part of FIG. 3, FIG. 5 is a sectional view of the mechanical seal, and FIG. 6 is a sectional view of the mechanical seal. It is a partially sectional view. DESCRIPTION OF SYMBOLS 1...Housing, 3...Rotating shaft, 5...Mating ring, 7...Seal ring, 9...Spring, 15...O ring, 21...Compression ring, 29...V packing, 101 ，
201...Annular groove, 107, 207...Protrusion, 1
11,211...Through hole, 113,213...Slurry.

Claims

[Claims for Utility Model Registration] 1. A seal ring that is pressed in the axial direction by a spring, a mating ring that slides in opposition to the seal ring, and a mating ring that is installed in an annular groove formed on the inner circumferential side of the seal ring. The mating ring is supported by a housing, and the seal ring is a mechanical seal that rotates together with the shaft. A protrusion is provided on the outer diameter of the non-sliding surface side of the seal ring, and the annular groove is connected to the shaft. A through-hole is formed that expands toward the non-sliding surface side of the packing and extends from the outer diameter portion of the protrusion on the sliding surface side to the enlarged portion of the annular groove, and flushing liquid supplied from the housing side is passed through the through-hole. A mechanical seal characterized in that the slurry is supplied into the annular groove and the slurry that has entered the annular groove is washed away. 2. Between the seal ring pressed in the axial direction by the spring via the compression ring, the mating ring that slides in opposing contact with this seal ring, and the compression ring on the inner circumferential side of the seal ring. and a shaft packing installed in an annular groove formed in the compression ring, the mating ring is supported by the housing, and the seal ring is a mechanical seal that rotates together with the shaft. the gap between the inner diameter of the compression ring and the non-sliding surface side of the annular groove is enlarged, and the compression ring is expanded from the outer diameter of the protrusion of the compression ring on the sliding surface side. A through hole is formed that extends to the enlarged inner diameter part of the ring, and flushing liquid supplied from the housing side is supplied to the enlarged gap through the through hole, thereby flushing out the slurry that has entered the gap. Features mechanical seal.