JP6804387B2 - Fixing mechanism and mechanical seal - Google Patents

Fixing mechanism and mechanical seal Download PDF

Info

Publication number
JP6804387B2
JP6804387B2 JP2017103744A JP2017103744A JP6804387B2 JP 6804387 B2 JP6804387 B2 JP 6804387B2 JP 2017103744 A JP2017103744 A JP 2017103744A JP 2017103744 A JP2017103744 A JP 2017103744A JP 6804387 B2 JP6804387 B2 JP 6804387B2
Authority
JP
Japan
Prior art keywords
annular member
screw
annular
rotating shaft
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2017103744A
Other languages
Japanese (ja)
Other versions
JP2018200059A (en
Inventor
雅和 喜藤
雅和 喜藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EagleBurgmann Japan Co Ltd
Original Assignee
EagleBurgmann Japan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EagleBurgmann Japan Co Ltd filed Critical EagleBurgmann Japan Co Ltd
Priority to JP2017103744A priority Critical patent/JP6804387B2/en
Publication of JP2018200059A publication Critical patent/JP2018200059A/en
Application granted granted Critical
Publication of JP6804387B2 publication Critical patent/JP6804387B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Mechanical Sealing (AREA)

Description

本発明は、回転軸に固定させるスリーブの固定機構及びメカニカルシールに関する。 The present invention relates to a sleeve fixing mechanism and a mechanical seal for fixing to a rotating shaft.

回転軸に固定されるスリーブは、セットスクリュなどのネジ部材によって固定されるのが一般的である。このネジ部材は、スリーブを回転軸に向けて径方向外側から押さえつけることができるように構成されている。また、通常、ネジ部材は外部に露出した状態となっている。そのため、回転軸の回転によって、ネジ部材には遠心力が作用するため、経時的にネジが緩んで外れてしまうことがある。従って、回転軸に対して、スリーブ部材が移動してしまうおそれがある。 The sleeve fixed to the rotating shaft is generally fixed by a screw member such as a set screw. This screw member is configured so that the sleeve can be pressed from the outside in the radial direction toward the rotation axis. Further, normally, the screw member is exposed to the outside. Therefore, centrifugal force acts on the screw member due to the rotation of the rotating shaft, so that the screw may loosen and come off over time. Therefore, the sleeve member may move with respect to the rotation shaft.

なお、メカニカルシールにおいては、回転軸などへの取り付け作業を容易にするために、メカニカルシールを構成する各種部材がユニット化されて１部品として取り扱われることが多い。この場合、ユニット化されたメカニカルシールには、上記のように、回転軸に固定されるスリーブが備えられる。 In the mechanical seal, in order to facilitate the attachment work to the rotating shaft or the like, various members constituting the mechanical seal are often unitized and handled as one component. In this case, the unitized mechanical seal is provided with a sleeve that is fixed to the rotating shaft as described above.

特開２００５−４８８１８号公報Japanese Unexamined Patent Publication No. 2005-48818 特開２０００−２６６１９０号公報Japanese Unexamined Patent Publication No. 2000-266190

本発明の目的は、回転軸に対してスリーブを固定させるためのネジ部材が外れてしまうことを抑制させることができる固定機構及びメカニカルシールを提供することにある。 An object of the present invention is to provide a fixing mechanism and a mechanical seal capable of suppressing the screw member for fixing the sleeve from coming off with respect to the rotating shaft.

本発明は、上記課題を解決するために以下の手段を採用した。 The present invention employs the following means to solve the above problems.

すなわち、本発明の固定機構は、
回転軸に固定させるスリーブの固定機構において、
前記回転軸に取付けられる第１環状部材と、
第１環状部材にネジ締結され、かつ前記スリーブを前記回転軸に向けて径方向外側から押さえつける第１ネジ部材と、
第１環状部材に取付けられる第２環状部材と、
第１環状部材と第２環状部材とをネジ締結させる第２ネジ部材と、
を備え、
第１環状部材は、
前記回転軸の外周面に取付けられる環状の胴体部と、
前記胴体部から前記スリーブの配置側に向かって突出する環状凸部と、
前記胴体部に軸線方向に伸びるように形成され、かつ第２ネジ部材が取り付けられる第１環状部材側取付孔と、
前記環状凸部に径方向に伸びるように形成され、かつ第１ネジ部材がネジ締結されるネジ孔と、
を備え、
第２環状部材は、
前記環状凸部に対して、該環状凸部の外周面側で回動自在に装着されると共に、
径方向に伸びるように形成され、かつ第１ネジ部材が通過可能な貫通孔と、
軸線方向に伸びるように形成され、かつ第２ネジ部材が取り付けられる第２環状部材側取付孔と、
を備え、
第２ネジ部材により第１環状部材と第２環状部材が固定された状態では、前記貫通孔と前記ネジ孔は周方向の異なる位置に位置していることを特徴とする。 That is, the fixing mechanism of the present invention is
In the fixing mechanism of the sleeve that is fixed to the rotating shaft
The first annular member attached to the rotating shaft and
A first screw member that is screwed to the first annular member and presses the sleeve from the outside in the radial direction toward the rotation axis.
The second annular member attached to the first annular member and
A second screw member for screwing the first annular member and the second annular member,
With
The first annular member is
An annular body portion attached to the outer peripheral surface of the rotating shaft and
An annular convex portion protruding from the body portion toward the arrangement side of the sleeve,
A first annular member-side mounting hole formed in the body portion so as to extend in the axial direction and to which the second screw member is mounted.
A screw hole formed in the annular convex portion so as to extend in the radial direction and to which the first screw member is screwed,
With
The second annular member is
It is rotatably attached to the annular convex portion on the outer peripheral surface side of the annular convex portion, and is also mounted.
A through hole formed so as to extend in the radial direction and through which the first screw member can pass,
A second annular member side mounting hole formed so as to extend in the axial direction and to which the second screw member is mounted,
With
In a state where the first annular member and the second annular member are fixed by the second screw member, the through hole and the screw hole are located at different positions in the circumferential direction.

本発明によれば、第１ネジ部材が第１環状部材のネジ孔にネジ締結され、かつ第２ネジ部材によって、第１環状部材と第２環状部材とがネジ締結された状態においては、第１ネジ部材の径方向外側に、第２環状部材に設けられた貫通孔が配置されていない状態となる。つまり、第１ネジ部材は第２環状部材によって蓋がされた状態となる。従って、第１ネジ部材が外れてしまうことを抑制することができる。 According to the present invention, in a state where the first screw member is screwed into the screw hole of the first annular member and the first annular member and the second annular member are screwed together by the second screw member, the first is 1 The through hole provided in the second annular member is not arranged on the outer side in the radial direction of the screw member. That is, the first screw member is in a state of being covered by the second annular member. Therefore, it is possible to prevent the first screw member from coming off.

第１環状部材側取付孔と前記ネジ孔は、第１環状部材に対して周方向に間隔を空けて複数備えられており、
前記貫通孔と第２環状部材側取付孔は、第２環状部材に対して周方向に間隔を空けて複数備えられており、
第１ネジ部材は前記貫通孔及びネジ孔と同数備えられ、
第２ネジ部材は第１環状部材側取付孔及び第２環状部材側取付孔と同数備えられているとよい。 A plurality of mounting holes on the side of the first annular member and the screw holes are provided at intervals in the circumferential direction with respect to the first annular member.
A plurality of the through holes and the mounting holes on the side of the second annular member are provided at intervals in the circumferential direction with respect to the second annular member.
The first screw member is provided with the same number of through holes and screw holes.
It is preferable that the second screw member is provided in the same number as the first annular member side mounting hole and the second annular member side mounting hole.

前記胴体部の内周面側には、前記回転軸の外周面に形成されたオネジ部にネジ締結されるメネジ部が形成されているとよい。 It is preferable that a female screw portion screwed to the male screw portion formed on the outer peripheral surface of the rotating shaft is formed on the inner peripheral surface side of the body portion.

これにより、第１環状部材を回転軸に対して、より確実に位置決め固定させることができる。 As a result, the first annular member can be more reliably positioned and fixed with respect to the rotating shaft.

本発明のメカニカルシールは、
回転軸とハウジングとの間の環状隙間を封止するメカニカルシールにおいて、
前記回転軸に固定されるスリーブと、
前記スリーブに対して設けられる回転環と、
前記回転環に対して摺動自在に設けられ、かつ前記ハウジングに対して設けられる固定環と、
前記回転環と固定環とを押し付ける押圧部材と、
を備えるメカニカルシールであって、
前記スリーブを前記回転軸に対して固定させる上記の固定機構を備えることを特徴とする。 The mechanical seal of the present invention is
In the mechanical seal that seals the annular gap between the rotating shaft and the housing
The sleeve fixed to the rotating shaft and
A rotating ring provided for the sleeve and
A fixed ring slidably provided with respect to the rotating ring and provided with respect to the housing,
A pressing member that presses the rotating ring and the fixed ring,
It is a mechanical seal equipped with
It is characterized by including the fixing mechanism for fixing the sleeve to the rotation shaft.

なお、上記各構成は、可能な限り組み合わせて採用し得る。 In addition, each of the above configurations can be adopted in combination as much as possible.

以上説明したように、本発明によれば、回転軸に対してスリーブを固定させるためのネジ部材が外れてしまうことを抑制させることができる。 As described above, according to the present invention, it is possible to prevent the screw member for fixing the sleeve from coming off with respect to the rotating shaft.

図１は本発明の実施例に係るメカニカルシールの模式的断面図である。FIG. 1 is a schematic cross-sectional view of a mechanical seal according to an embodiment of the present invention. 図２は本発明の実施例に係る固定機構の模式的断面図である。FIG. 2 is a schematic cross-sectional view of the fixing mechanism according to the embodiment of the present invention. 図３は本発明の実施例に係る第１環状部材の正面図である。FIG. 3 is a front view of the first annular member according to the embodiment of the present invention. 図４は本発明の実施例に係る第２環状部材の正面図である。FIG. 4 is a front view of the second annular member according to the embodiment of the present invention. 図５は本発明の実施例に係る固定機構の組み立て説明図である。FIG. 5 is an assembly explanatory view of the fixing mechanism according to the embodiment of the present invention. 図６は本発明の実施例に係る固定機構の組み立て説明図である。FIG. 6 is an assembly explanatory view of the fixing mechanism according to the embodiment of the present invention. 図７は本発明の実施例に係る固定機構の組み立て説明図である。FIG. 7 is an assembly explanatory view of the fixing mechanism according to the embodiment of the present invention. 図８は本発明の実施例に係る固定機構の組み立て説明図である。FIG. 8 is an assembly explanatory view of the fixing mechanism according to the embodiment of the present invention.

以下に図面を参照して、この発明を実施するための形態を、実施例に基づいて例示的に詳しく説明する。ただし、この実施例に記載されている構成部品の寸法、材質、形状、その相対配置などは、特に特定的な記載がない限りは、この発明の範囲をそれらのみに限定する趣旨のものではない。 Hereinafter, embodiments for carrying out the present invention will be described in detail exemplarily based on examples with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment are not intended to limit the scope of the present invention to those, unless otherwise specified. ..

（実施例）
図１〜図８を参照して、本発明の実施例に係る固定機構及びメカニカルシールについて説明する。図１は本発明の実施例に係るメカニカルシールの模式的断面図である。なお、図１においては、回転軸の中心軸線を含む面でメカニカルシールを切断した断面を模式的に示している。図２は本発明の実施例に係る固定機構の模式的断面図である。なお、図２においては、固定機構が取り付けられる回転軸の中心軸線を含む面で固定機構を切断した断面を模式的に示しており、かつ奥行き線は省略している。図３は本発明の実施例に係る第１環状部材の正面図である。なお、図３中のＡＡ断面図が、図１及び図２中の第１環状部材の断面図に相当する。図４は本発明の実施例に係る第２環状部材の正面図である。なお、図４中のＢＢ断面図が、図１及び図２中の第２環状部材の断面図に相当する。図５〜図８は本発明の実施例に係る固定機構の組み立て説明図である。なお、図５〜図８において、固定機構は模式的断面図にて示している。なお、以下の説明において、「軸線方向」とは、回転軸の中心軸線が伸びる方向を意味する。 (Example)
The fixing mechanism and the mechanical seal according to the embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG. 1 is a schematic cross-sectional view of a mechanical seal according to an embodiment of the present invention. Note that FIG. 1 schematically shows a cross section in which the mechanical seal is cut on a surface including the central axis of the rotating shaft. FIG. 2 is a schematic cross-sectional view of the fixing mechanism according to the embodiment of the present invention. Note that FIG. 2 schematically shows a cross section in which the fixing mechanism is cut on a surface including the central axis of the rotating shaft to which the fixing mechanism is attached, and the depth line is omitted. FIG. 3 is a front view of the first annular member according to the embodiment of the present invention. The AA cross-sectional view in FIG. 3 corresponds to the cross-sectional view of the first annular member in FIGS. 1 and 2. FIG. 4 is a front view of the second annular member according to the embodiment of the present invention. The cross-sectional view of the BB in FIG. 4 corresponds to the cross-sectional view of the second annular member in FIGS. 1 and 2. 5 and 8 are assembly explanatory views of the fixing mechanism according to the embodiment of the present invention. In FIGS. 5 to 8, the fixing mechanism is shown in a schematic cross-sectional view. In the following description, the "axis direction" means the direction in which the central axis of the rotation axis extends.

＜メカニカルシール＞
本実施例に係る固定機構の説明に先立って、本実施例に係る固定機構を採用し得るメカニカルシールの一例について、図１を参照して説明する。なお、本実施例に係る固定機構は、以下に説明するメカニカルシールに拘わらず、スリーブを備える各種メカニカルシールに適用可能である。 <Mechanical seal>
Prior to the description of the fixing mechanism according to the present embodiment, an example of a mechanical seal that can adopt the fixing mechanism according to the present embodiment will be described with reference to FIG. The fixing mechanism according to the present embodiment can be applied to various mechanical seals provided with a sleeve, regardless of the mechanical seals described below.

メカニカルシール１０は、回転軸２００とハウジング４００との間の環状隙間を封止するために用いられる。そして、メカニカルシール１０は、回転軸２００に固定されるスリーブ３００と、スリーブ３００に対して設けられる回転環５００と、回転環５００に対して摺動自在に設けられ、かつハウジング４００に対して設けられる固定環６００とを備えている。また、メカニカルシール１０は、回転環５００と固定環６００とを押し付ける押圧部材７００を備えている。本実施例に係るメカニカルシール１０においては、押圧部材７００は、固定環６００を回転環５００に向けて押圧するように構成されている。ただし、押圧部材によって、回転環を固定環に向けて押圧するように構成されるメカニカルシールもある。 The mechanical seal 10 is used to seal the annular gap between the rotating shaft 200 and the housing 400. The mechanical seal 10 is provided on the sleeve 300 fixed to the rotary shaft 200, the rotary ring 500 provided on the sleeve 300, and slidably on the rotary ring 500, and is provided on the housing 400. It is provided with a fixed ring 600 to be attached. Further, the mechanical seal 10 includes a pressing member 700 that presses the rotating ring 500 and the fixed ring 600. In the mechanical seal 10 according to the present embodiment, the pressing member 700 is configured to press the fixed ring 600 toward the rotating ring 500. However, there is also a mechanical seal configured to press the rotating ring toward the fixed ring by the pressing member.

そして、スリーブ３００を回転軸２００に対して固定させるために、本実施例に係る固定機構１００が設けられている。 Then, in order to fix the sleeve 300 to the rotating shaft 200, the fixing mechanism 100 according to this embodiment is provided.

＜固定機構＞
特に、図２〜図４を参照して、本実施例に係る固定機構１００について説明する。本実施例に係る固定機構１００は、回転軸２００に取付けられる第１環状部材１１０と、第１環状部材１１０にネジ締結され、かつスリーブ３００を回転軸２００に向けて径方向外側から押さえつける第１ネジ部材１３０とを備えている。なお、本実施例に係る第１ネジ部材１３０はセットスクリュである。また、固定機構１００は、第１環状部材１１０に取付けられる第２環状部材１２０と、第１環状部材１１０と第２環状部材１２０とをネジ締結
させる第２ネジ部材１４０とを備えている。なお、本実施例に係る第２ネジ部材１４０はボルトである。また、本実施例に係る第１環状部材１１０及び第２環状部材１２０は、いずれも金属材料により構成される。以下、特に、第１環状部材１１０と第２環状部材１２０について、より詳細に説明する。 <Fixing mechanism>
In particular, the fixing mechanism 100 according to this embodiment will be described with reference to FIGS. 2 to 4. In the fixing mechanism 100 according to the present embodiment, the first annular member 110 attached to the rotating shaft 200 and the first annular member 110 are screwed to each other and the sleeve 300 is pressed toward the rotating shaft 200 from the outside in the radial direction. It includes a screw member 130. The first screw member 130 according to this embodiment is a set screw. Further, the fixing mechanism 100 includes a second annular member 120 attached to the first annular member 110, and a second screw member 140 for screwing the first annular member 110 and the second annular member 120. The second screw member 140 according to this embodiment is a bolt. Further, the first annular member 110 and the second annular member 120 according to the present embodiment are both made of a metal material. Hereinafter, in particular, the first annular member 110 and the second annular member 120 will be described in more detail.

第１環状部材１１０は、回転軸２００の外周面に取付けられる環状の胴体部１１０Ａと、胴体部１１０Ａからスリーブ３００の配置側に向かって突出する環状凸部１１０Ｂとを備えている。胴体部１１０Ａの内周面側には、回転軸２００の外周面に形成されたオネジ部２１０にネジ締結されるメネジ部１１１が形成されている。また、胴体部１１０Ａには、軸線方向に伸びるように形成され、かつ第２ネジ部材１４０が取り付けられる第１環状部材側取付孔１１２が備えられている。この第１環状部材側取付孔１１２は、環状凸部１１０Ｂよりも径方向外側に設けられている。この第１環状部材側取付孔１１２は、周方向に間隔を空けて複数設けられている。より具体的には、第１環状部材側取付孔１１２は、等間隔に４か所に設けられている。また、環状凸部１１０Ｂには、径方向に伸びるように形成され、かつ第１ネジ部材１３０がネジ締結されるネジ孔１１３が備えられている。このネジ孔１１３は、貫通孔の内周面にメネジが形成された構成である。また、ネジ孔１１３は、周方向に間隔を空けて複数設けられている。より具体的には、ネジ孔１１３は、等間隔に４か所に設けられている。本実施例においては、第１環状部材側取付孔１１２とネジ孔１１３は、周方向に対して同じ位置にそれぞれ設けられている。ただし、これら第１環状部材側取付孔１１２とネジ孔１１３は、周方向に対して異なる位置に設けてもよい。 The first annular member 110 includes an annular body portion 110A attached to the outer peripheral surface of the rotating shaft 200, and an annular convex portion 110B protruding from the body portion 110A toward the arrangement side of the sleeve 300. On the inner peripheral surface side of the body portion 110A, a female screw portion 111 that is screwed to the male screw portion 210 formed on the outer peripheral surface of the rotating shaft 200 is formed. Further, the body portion 110A is provided with a first annular member side mounting hole 112 which is formed so as to extend in the axial direction and to which the second screw member 140 is mounted. The first annular member side mounting hole 112 is provided on the outer side in the radial direction with respect to the annular convex portion 110B. A plurality of the first annular member side mounting holes 112 are provided at intervals in the circumferential direction. More specifically, the first annular member side mounting holes 112 are provided at four locations at equal intervals. Further, the annular convex portion 110B is provided with a screw hole 113 which is formed so as to extend in the radial direction and to which the first screw member 130 is screwed. The screw hole 113 has a structure in which a female screw is formed on the inner peripheral surface of the through hole. Further, a plurality of screw holes 113 are provided at intervals in the circumferential direction. More specifically, the screw holes 113 are provided at four positions at equal intervals. In this embodiment, the first annular member side mounting hole 112 and the screw hole 113 are provided at the same positions with respect to the circumferential direction, respectively. However, the first annular member side mounting hole 112 and the screw hole 113 may be provided at different positions with respect to the circumferential direction.

第２環状部材１２０は、第１環状部材１１０における環状凸部１１０Ｂに対して、環状凸部１１０Ｂの外周面側で回動自在に装着される。そして、第２環状部材１２０には、径方向に伸びるように形成され、かつ第１ネジ部材１３０が通過可能な貫通孔１２２が備えられている。この貫通孔１２２は、周方向に間隔を空けて複数設けられている。より具体的には、貫通孔１２２は、等間隔に４か所に設けられている。また、第２環状部材１２０には、軸線方向に伸びるように形成され、かつ第２ネジ部材１４０が取り付けられる第２環状部材側取付孔１２１が備えられている。この第２環状部材側取付孔１２１は、周方向に間隔を空けて複数設けられている。より具体的には、第２環状部材側取付孔１２１は、等間隔に４か所に設けられている。これら貫通孔１２２と第２環状部材側取付孔１２１は、周方向に４５°ずれながら交互に配置されている。 The second annular member 120 is rotatably mounted on the outer peripheral surface side of the annular convex portion 110B with respect to the annular convex portion 110B of the first annular member 110. The second annular member 120 is provided with a through hole 122 that is formed so as to extend in the radial direction and through which the first screw member 130 can pass. A plurality of through holes 122 are provided at intervals in the circumferential direction. More specifically, the through holes 122 are provided at four locations at equal intervals. Further, the second annular member 120 is provided with a second annular member side mounting hole 121 which is formed so as to extend in the axial direction and to which the second screw member 140 is attached. A plurality of the second annular member side mounting holes 121 are provided at intervals in the circumferential direction. More specifically, the second annular member side mounting holes 121 are provided at four locations at equal intervals. The through holes 122 and the second annular member side mounting holes 121 are alternately arranged while being displaced by 45 ° in the circumferential direction.

そして、第２ネジ部材１４０により第１環状部材１１０と第２環状部材１２０が固定された状態では、貫通孔１２２とネジ孔１１３は周方向の異なる位置に位置するように構成されている。 When the first annular member 110 and the second annular member 120 are fixed by the second screw member 140, the through hole 122 and the screw hole 113 are configured to be located at different positions in the circumferential direction.

本実施例においては、第１ネジ部材１３０は貫通孔１２２及びネジ孔１１３と同数備えられている。つまり、４か所のネジ孔１１３に、それぞれ第１ネジ部材１３０がネジ締結されるように構成されている。また、第２ネジ部材１４０は第１環状部材側取付孔１１２及び第２環状部材側取付孔１２１と同数備えられている。つまり、４か所の第１環状部材側取付孔１１２及び第２環状部材側取付孔１２１に、それぞれ第２ネジ部材１４０がネジ締結されるように構成されている。 In this embodiment, the first screw member 130 is provided with the same number of through holes 122 and screw holes 113. That is, the first screw member 130 is screw-fastened to each of the four screw holes 113. Further, the second screw member 140 is provided with the same number as the first annular member side mounting hole 112 and the second annular member side mounting hole 121. That is, the second screw member 140 is screw-fastened to each of the four first annular member-side mounting holes 112 and the second annular member-side mounting holes 121.

＜固定機構の組み立て手順＞
特に、図５〜図８を参照して、本実施例に係る固定機構１００の組み立て手順について説明する。本実施例に係る固定機構１００は、第１ネジ部材１３０がネジ孔１１３にねじ込まれ、かつ第２ネジ部材１４０によって第１環状部材１１０と第２環状部材１２０とがネジ締結された状態で、ユニット化されて、１部品として取り扱うことができる（図２参照）。また、第１ネジ部材１３０がネジ孔１１３にねじ込まれた状態において、第１ネジ部材１３０の径方向外側の端面が、第１環状部材１１０における環状凸部１１０Ｂの外周
面から飛び出ないようすることができるように構成されている。 <Assembly procedure of fixing mechanism>
In particular, the procedure for assembling the fixing mechanism 100 according to the present embodiment will be described with reference to FIGS. 5 to 8. In the fixing mechanism 100 according to the present embodiment, the first screw member 130 is screwed into the screw hole 113, and the first annular member 110 and the second annular member 120 are screwed together by the second screw member 140. It can be unitized and handled as one component (see FIG. 2). Further, when the first screw member 130 is screwed into the screw hole 113, the radial outer end surface of the first screw member 130 is prevented from protruding from the outer peripheral surface of the annular convex portion 110B of the first annular member 110. Is configured to allow

この固定機構１００を回転軸２００に固定させる場合には、まず、第２ネジ部材１４０が取り外される。そして、第２環状部材１２０における貫通孔１２２とネジ孔１１３とが周方向の同じ位置になるように、第２環状部材１２０が環状凸部１１０Ｂに対して回転される。その後、第１ネジ部材１３０がねじ込み方向とは逆方向に回転され、第１ネジ部材１３０の先端が環状凸部１１０Ｂの内周面から飛び出さない位置まで、径方向外側に移動される（図５中、矢印Ｓ１参照）。そして、胴体部１１０Ａがスリーブ３００の先端に突き当たる位置まで、胴体部１１０Ａの内周面に設けられたメネジ部１１１が回転軸２００のオネジ２１０部にねじ込まれる（図５中、矢印Ｓ２参照）。 When fixing the fixing mechanism 100 to the rotating shaft 200, first, the second screw member 140 is removed. Then, the second annular member 120 is rotated with respect to the annular convex portion 110B so that the through hole 122 and the screw hole 113 in the second annular member 120 are at the same position in the circumferential direction. After that, the first screw member 130 is rotated in the direction opposite to the screwing direction, and the tip of the first screw member 130 is moved outward in the radial direction until the tip does not protrude from the inner peripheral surface of the annular convex portion 110B (FIG. In 5, see arrow S1). Then, the female screw portion 111 provided on the inner peripheral surface of the body portion 110A is screwed into the male screw 210 portion of the rotating shaft 200 until the body portion 110A abuts on the tip of the sleeve 300 (see arrow S2 in FIG. 5).

その後、第１ネジ部材１３０が完全にねじ込まれる（図６中、矢印Ｓ３参照）。本実施例においては、スリーブ３００の外周面側に環状溝３１０が設けられている。第１ネジ部材１３０が完全にねじ込まれると、この環状溝３１０の溝底に、第１ネジ部材１３０の先端が突き当たるように構成されている。これにより、スリーブ３００は、第１ネジ部材１３０によって、回転軸２００に向けて径方向外側から押さえつけられる。なお、以下の説明において、「第１ネジ部材１３０が完全にねじ込まれる」とは、第１ネジ部材１３０の先端が環状溝３１０の溝底に突き当たるまで第１ネジ部材１３０がねじ込まれることを意味する。 After that, the first screw member 130 is completely screwed (see arrow S3 in FIG. 6). In this embodiment, the annular groove 310 is provided on the outer peripheral surface side of the sleeve 300. When the first screw member 130 is completely screwed in, the tip of the first screw member 130 is configured to abut against the groove bottom of the annular groove 310. As a result, the sleeve 300 is pressed by the first screw member 130 from the outside in the radial direction toward the rotating shaft 200. In the following description, "the first screw member 130 is completely screwed in" means that the first screw member 130 is screwed in until the tip of the first screw member 130 abuts on the groove bottom of the annular groove 310. To do.

第１ネジ部材１３０が完全にねじ込まれた後、第２環状部材側取付孔１２１と第１環状部材側取付孔１１２とが周方向の同じ位置になるように、第２環状部材１２０が環状凸部１１０Ｂに対して回転される（図７参照）。そして、第２ネジ部材１４０によって、第１環状部材１１０と第２環状部材１２０とがネジ締結により固定される（図８参照）。 After the first screw member 130 is completely screwed in, the second annular member 120 is annularly convex so that the second annular member side mounting hole 121 and the first annular member side mounting hole 112 are at the same position in the circumferential direction. It is rotated with respect to the unit 110B (see FIG. 7). Then, the first annular member 110 and the second annular member 120 are fixed by the second screw member 140 by screwing (see FIG. 8).

＜本実施例に係る固定機構及びメカニカルシールの優れた点＞
本実施例に係る固定機構１００においては、第２ネジ部材１４０により第１環状部材１１０と第２環状部材１２０が固定された状態では、第２環状部材１２０に設けられた貫通孔１２２と第１環状部材１１０に設けられたネジ孔１１３は周方向の異なる位置に位置する。従って、第１ネジ部材１３０が第１環状部材１１０のネジ孔１１３にネジ締結され、かつ第２ネジ部材１４０によって、第１環状部材１１０と第２環状部材１２０とがネジ締結された状態においては、第１ネジ部材１３０の径方向外側に、第２環状部材１２０に設けられた貫通孔１２２が配置されていない状態となる。つまり、第１ネジ部材１３０は第２環状部材１２０によって蓋がされた状態となる。従って、第１ネジ部材１３０が外れてしまうことを抑制することができる。 <Advantages of the fixing mechanism and mechanical seal according to this embodiment>
In the fixing mechanism 100 according to the present embodiment, when the first annular member 110 and the second annular member 120 are fixed by the second screw member 140, the through holes 122 and the first annular member 120 provided in the second annular member 120 are fixed. The screw holes 113 provided in the annular member 110 are located at different positions in the circumferential direction. Therefore, in a state where the first screw member 130 is screwed into the screw hole 113 of the first annular member 110 and the first annular member 110 and the second annular member 120 are screwed together by the second screw member 140. , The through hole 122 provided in the second annular member 120 is not arranged on the radial outer side of the first screw member 130. That is, the first screw member 130 is in a state of being covered by the second annular member 120. Therefore, it is possible to prevent the first screw member 130 from coming off.

第１ネジ部材１３０がネジ孔１１３に完全にねじ込まれた状態においては、第１ネジ部材１３０の径方向外側の端面は、第１環状部材１１０における環状凸部１１０Ｂの外周面から飛び出ないように構成されている。ここで、第１ネジ部材１３０がネジ孔１１３に完全にねじ込まれた状態において、第１ネジ部材１３０の径方向外側の端面と、第１環状部材１１０における環状凸部１１０Ｂの外周面とがほぼ同一面となるように構成するのが望ましい。これにより、第１ネジ部材１３０の径方向外側の端面と第２環状部材１２０の内周面との距離がゼロ（または、ほぼゼロ）となり、第１ネジ部材１３０の緩みを殆どなくすことができる。なお、第１ネジ部材１３０がネジ孔１１３に完全にねじ込まれた状態において、第１ネジ部材１３０の径方向外側の端面と、第１環状部材１１０における環状凸部１１０Ｂの外周面との径方向の距離が長い程、第１ネジ部材１３０の径方向外側の端面と第２環状部材１２０の内周面との距離は長くなる。この距離が長い程、第１ネジ部材１３０の緩みが大きくなるおそれがあるため、当該距離は短いほどよい。 When the first screw member 130 is completely screwed into the screw hole 113, the radial outer end surface of the first screw member 130 does not protrude from the outer peripheral surface of the annular convex portion 110B of the first annular member 110. It is configured. Here, in a state where the first screw member 130 is completely screwed into the screw hole 113, the radial outer end surface of the first screw member 130 and the outer peripheral surface of the annular convex portion 110B of the first annular member 110 are substantially aligned with each other. It is desirable to configure them so that they are on the same surface. As a result, the distance between the radial outer end surface of the first screw member 130 and the inner peripheral surface of the second annular member 120 becomes zero (or almost zero), and the looseness of the first screw member 130 can be almost eliminated. .. In the state where the first screw member 130 is completely screwed into the screw hole 113, the radial outer end surface of the first screw member 130 and the outer peripheral surface of the annular convex portion 110B of the first annular member 110 are radially. The longer the distance between the two, the longer the distance between the radial outer end surface of the first screw member 130 and the inner peripheral surface of the second annular member 120. The longer this distance is, the greater the looseness of the first screw member 130 may be. Therefore, the shorter the distance, the better.

また、本実施例においては、第１環状部材１１０における胴体部１１０Ａの内周面側に
は、回転軸２００の外周面に形成されたオネジ部２１０にネジ締結されるメネジ部１１１が形成されている。これにより、第１環状部材１１０を回転軸２００に対して、より確実に位置決め固定させることができる。ただし、第１環状部材１１０の回転軸２００への取付方法については、ネジ締結に限定されることはない。例えば、嵌合や圧入により第１環状部材を回転軸に取付けるようにしてもよい。 Further, in the present embodiment, a female screw portion 111 screwed to the male screw portion 210 formed on the outer peripheral surface of the rotating shaft 200 is formed on the inner peripheral surface side of the body portion 110A of the first annular member 110. There is. As a result, the first annular member 110 can be more reliably positioned and fixed with respect to the rotating shaft 200. However, the method of attaching the first annular member 110 to the rotating shaft 200 is not limited to screw fastening. For example, the first annular member may be attached to the rotating shaft by fitting or press fitting.

（その他）
本実施例においては、第１環状部材１１０に設けられる第１環状部材側取付孔１１２は単なる貫通孔（メネジが形成されていない孔）として、第２環状部材１２０に設けられる第２環状部材側取付孔１２１はメネジが形成されている。これにより、第２ネジ部材１４０が第１環状部材側取付孔１１２から挿通されて、第２環状部材側取付孔１２１にねじ込まれて、第１環状部材１１０と第２環状部材１２０とがネジ締結される。以上のような構成を採用することで、スリーブ３００の配置側とは反対側で、第２ネジ部材１４０の締結作業を行うことができるため、作業性に優れている。ただし、第２ネジ部材１４０の締結作業性に支障がなければ、スリーブ３００の配置側から第２ネジ部材１４０の締結作業を行うような構成を採用してもよい。つまり、第２環状部材に設けられる第２環状部材側取付孔を単なる貫通孔として、第１環状部材に設けられる第１環状部材側取付孔にメネジが形成される構成を採用してもよい。この場合には、第２ネジ部材１４０が第２環状部材側取付孔から挿通されて、第１環状部材側取付孔にねじ込まれて、第１環状部材と第２環状部材とがネジ締結される。 (Other)
In the present embodiment, the first annular member side mounting hole 112 provided in the first annular member 110 is a mere through hole (a hole in which a female screw is not formed), and the second annular member side provided in the second annular member 120. A female screw is formed in the mounting hole 121. As a result, the second screw member 140 is inserted through the first annular member side mounting hole 112 and screwed into the second annular member side mounting hole 121, and the first annular member 110 and the second annular member 120 are screwed together. Will be done. By adopting the above configuration, the second screw member 140 can be fastened on the side opposite to the side where the sleeve 300 is arranged, so that the workability is excellent. However, if there is no problem in the fastening workability of the second screw member 140, a configuration may be adopted in which the second screw member 140 is fastened from the arrangement side of the sleeve 300. That is, a configuration may be adopted in which the second annular member side mounting hole provided in the second annular member is simply a through hole, and a female screw is formed in the first annular member side mounting hole provided in the first annular member. In this case, the second screw member 140 is inserted through the second annular member side mounting hole, screwed into the first annular member side mounting hole, and the first annular member and the second annular member are screwed together. ..

１０ メカニカルシール
１００ 固定機構
１１０ 第１環状部材
１１０Ａ 胴体部
１１０Ｂ 環状凸部
１１１ メネジ部
１１２ 第１環状部材側取付孔
１１３ ネジ孔
１２０ 第２環状部材
１２１ 第２環状部材側取付孔
１２２ 貫通孔
１３０ 第１ネジ部材
１４０ 第２ネジ部材
２００ 回転軸
２１０ オネジ部
３００ スリーブ
３１０ 環状溝
４００ ハウジング
５００ 回転環
６００ 固定環
７００ 押圧部材 10 Mechanical seal 100 Fixing mechanism 110 1st annular member 110A Body part 110B Circular convex part 111 Female screw part 112 1st annular member side mounting hole 113 Screw hole 120 2nd annular member 121 2nd annular member side mounting hole 122 Through hole 130 1 Screw member 140 2nd screw member 200 Rotating shaft 210 Male threaded part 300 Sleeve 310 Ring groove 400 Housing 500 Rotating ring 600 Fixed ring 700 Pressing member

Claims (4)

回転軸に固定させるスリーブの固定機構において、
前記回転軸に取付けられる第１環状部材と、
第１環状部材にネジ締結され、かつ前記スリーブを前記回転軸に向けて径方向外側から押さえつける第１ネジ部材と、
第１環状部材に取付けられる第２環状部材と、
第１環状部材と第２環状部材とをネジ締結させる第２ネジ部材と、
を備え、
第１環状部材は、
前記回転軸の外周面に取付けられる環状の胴体部と、
前記胴体部から前記スリーブの配置側に向かって突出する環状凸部と、
前記胴体部に軸線方向に伸びるように形成され、かつ第２ネジ部材が取り付けられる第１環状部材側取付孔と、
前記環状凸部に径方向に伸びるように形成され、かつ第１ネジ部材がネジ締結されるネジ孔と、
を備え、
第２環状部材は、
前記環状凸部に対して、該環状凸部の外周面側で回動自在に装着されると共に、
径方向に伸びるように形成され、かつ第１ネジ部材が通過可能な貫通孔と、
軸線方向に伸びるように形成され、かつ第２ネジ部材が取り付けられる第２環状部材側取付孔と、
を備え、
第２ネジ部材により第１環状部材と第２環状部材が固定された状態では、前記貫通孔と前記ネジ孔は周方向の異なる位置に位置していることを特徴とする固定機構。 In the fixing mechanism of the sleeve that is fixed to the rotating shaft
The first annular member attached to the rotating shaft and
A first screw member that is screwed to the first annular member and presses the sleeve from the outside in the radial direction toward the rotation axis.
The second annular member attached to the first annular member and
A second screw member for screwing the first annular member and the second annular member,
With
The first annular member is
An annular body portion attached to the outer peripheral surface of the rotating shaft and
An annular convex portion protruding from the body portion toward the arrangement side of the sleeve,
A first annular member-side mounting hole formed in the body portion so as to extend in the axial direction and to which the second screw member is mounted.
A screw hole formed in the annular convex portion so as to extend in the radial direction and to which the first screw member is screwed,
With
The second annular member is
It is rotatably attached to the annular convex portion on the outer peripheral surface side of the annular convex portion, and is also mounted.
A through hole formed so as to extend in the radial direction and through which the first screw member can pass,
A second annular member side mounting hole formed so as to extend in the axial direction and to which the second screw member is mounted,
With
A fixing mechanism characterized in that, in a state where the first annular member and the second annular member are fixed by the second screw member, the through hole and the screw hole are located at different positions in the circumferential direction. 第１環状部材側取付孔と前記ネジ孔は、第１環状部材に対して周方向に間隔を空けて複数備えられており、
前記貫通孔と第２環状部材側取付孔は、第２環状部材に対して周方向に間隔を空けて複数備えられており、
第１ネジ部材は前記貫通孔及びネジ孔と同数備えられ、
第２ネジ部材は第１環状部材側取付孔及び第２環状部材側取付孔と同数備えられていることを特徴とする請求項１に記載の固定機構。 A plurality of mounting holes on the side of the first annular member and the screw holes are provided at intervals in the circumferential direction with respect to the first annular member.
A plurality of the through holes and the mounting holes on the side of the second annular member are provided at intervals in the circumferential direction with respect to the second annular member.
The first screw member is provided with the same number of through holes and screw holes.
The fixing mechanism according to claim 1, wherein the second screw member is provided with the same number of mounting holes on the first annular member side and mounting holes on the second annular member side. 前記胴体部の内周面側には、前記回転軸の外周面に形成されたオネジ部にネジ締結されるメネジ部が形成されていることを特徴とする請求項１または２に記載の固定機構。 The fixing mechanism according to claim 1 or 2, wherein a female screw portion screwed to a male screw portion formed on the outer peripheral surface of the rotating shaft is formed on the inner peripheral surface side of the body portion. .. 回転軸とハウジングとの間の環状隙間を封止するメカニカルシールにおいて、
前記回転軸に固定されるスリーブと、
前記スリーブに対して設けられる回転環と、
前記回転環に対して摺動自在に設けられ、かつ前記ハウジングに対して設けられる固定環と、
前記回転環と固定環とを押し付ける押圧部材と、
を備えるメカニカルシールであって、
前記スリーブを前記回転軸に対して固定させる請求項１，２または３に記載の固定機構を備えることを特徴とするメカニカルシール。 In the mechanical seal that seals the annular gap between the rotating shaft and the housing
The sleeve fixed to the rotating shaft and
A rotating ring provided for the sleeve and
A fixed ring slidably provided with respect to the rotating ring and provided with respect to the housing,
A pressing member that presses the rotating ring and the fixed ring,
It is a mechanical seal equipped with
The mechanical seal according to claim 1, 2, or 3, wherein the sleeve is fixed to the rotating shaft.
JP2017103744A 2017-05-25 2017-05-25 Fixing mechanism and mechanical seal Active JP6804387B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017103744A JP6804387B2 (en) 2017-05-25 2017-05-25 Fixing mechanism and mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017103744A JP6804387B2 (en) 2017-05-25 2017-05-25 Fixing mechanism and mechanical seal

Publications (2)

Publication Number Publication Date
JP2018200059A JP2018200059A (en) 2018-12-20
JP6804387B2 true JP6804387B2 (en) 2020-12-23

Family

ID=64667979

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017103744A Active JP6804387B2 (en) 2017-05-25 2017-05-25 Fixing mechanism and mechanical seal

Country Status (1)

Country Link
JP (1) JP6804387B2 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS477551Y1 (en) * 1968-09-17 1972-03-21
JPH0247314Y2 (en) * 1987-06-26 1990-12-12
JP3801677B2 (en) * 1996-01-19 2006-07-26 リックス株式会社 Rotary joint
JP3150005U (en) * 2009-02-12 2009-04-23 株式会社中村製作所 Preset torque wrench
US9388905B2 (en) * 2009-09-24 2016-07-12 Eagle Industry Co., Ltd. Mechanical seal
WO2013125269A1 (en) * 2012-02-20 2013-08-29 イーグル工業株式会社 Mechanical seal device

Also Published As

Publication number Publication date
JP2018200059A (en) 2018-12-20

Similar Documents

Publication Publication Date Title
JP2008215608A5 (en)
EP3070379B1 (en) Mechanical seal
JP2019094963A (en) Coupling and its fixing method
WO2016009803A1 (en) Sealing device
EP3179141B1 (en) Sealing device
WO2014042085A1 (en) Mechanical seal
JP6804387B2 (en) Fixing mechanism and mechanical seal
JP6483132B2 (en) Sealing device
WO2017086345A1 (en) Shaft coupling and pump device
JP6442723B2 (en) Sealing structure
JPWO2018012330A1 (en) mechanical seal
US9909668B2 (en) Mechanical seal having a simplified construction
JP2017044332A5 (en)
JP5124658B2 (en) Spherical joint
JP5775270B2 (en) Pipe fitting
US11781597B2 (en) System for securing together by means of press-fitting a casing and a cover of a housing element
JP2010043690A (en) Rolling bearing and bearing unit
US9383019B2 (en) Mechanical seal
JP5556997B2 (en) Friction fastener
JP2019082198A (en) Device having seal mechanism
KR101738113B1 (en) Friction fastening tool
JP6722448B2 (en) Bolt removal prevention material
JP7062849B2 (en) Sealing device
WO2021005882A1 (en) Sealing device and sealing structure
JP2018204657A (en) Support structure of gear

Legal Events

Date Code Title Description
A625 Written request for application examination (by other person)

Free format text: JAPANESE INTERMEDIATE CODE: A625

Effective date: 20191120

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20201028

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20201119

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20201201

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20201202

R150 Certificate of patent or registration of utility model

Ref document number: 6804387

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250