JP7190395B2 - split mechanical seal - Google Patents

split mechanical seal Download PDF

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JP7190395B2
JP7190395B2 JP2019106184A JP2019106184A JP7190395B2 JP 7190395 B2 JP7190395 B2 JP 7190395B2 JP 2019106184 A JP2019106184 A JP 2019106184A JP 2019106184 A JP2019106184 A JP 2019106184A JP 7190395 B2 JP7190395 B2 JP 7190395B2
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ring
rotating
circumferential direction
rotating shaft
dividing
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JP2020200849A (en
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幸雄 田中
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Torishima Pump Manufacturing Co Ltd
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Description

本発明は、分割型メカニカルシールに関する。 The present invention relates to a split mechanical seal.

回転機械のケーシングに固定されたシールカバー内に、回転軸と一体に回転可能な回転環と、回転軸とは一体に回転しない固定環とを配置したメカニカルシールが知られている。回転環及び固定環等の摺動環は、摺動によって消耗するため、定期的に交換する必要がある。この交換時に回転機械のモータを取り外す必要がある場合、作業が大掛かりになるためコスト高になる。 2. Description of the Related Art Mechanical seals are known in which a rotating ring that can rotate together with a rotating shaft and a fixed ring that does not rotate together with the rotating shaft are arranged in a seal cover fixed to a casing of a rotating machine. Sliding rings such as rotating rings and stationary rings are worn out by sliding and must be replaced periodically. If it is necessary to remove the motor of the rotary machine at the time of this replacement, the work becomes large-scale and the cost increases.

特許文献1には、シールカバー、回転環、及び固定環を周方向に2分割して構成した分割型メカニカルシールが開示されている。この分割型メカニカルシールでは、回転軸に対するシールカバー、回転環及び固定環の着脱作業を、回転軸の径方向から行うことができるため、モータを取り外すことなく、消耗部品である回転環と固定環を交換できる。 Patent Literature 1 discloses a split mechanical seal configured by splitting a seal cover, a rotating ring, and a stationary ring into two parts in the circumferential direction. With this split type mechanical seal, the seal cover, rotary ring, and fixed ring can be attached and detached from the rotary shaft from the radial direction of the rotary shaft. can be replaced.

米国特許公開第2014/0159315号明細書U.S. Patent Publication No. 2014/0159315

この種のメカニカルシールでは、外部への液漏れを防ぐために、摺動環を正確に取り付ける必要がある。特許文献1の分割型メカニカルシールでは、シールカバーに対して複数のクリップ部材を周方向に間隔をあけて配置することで、シールカバーの定位置に摺動環を配置しているため、その取付構造が複雑であり、部品交換時の作業性が悪い。 In this type of mechanical seal, it is necessary to mount the sliding ring accurately in order to prevent liquid leakage to the outside. In the split type mechanical seal of Patent Document 1, a plurality of clip members are arranged at intervals in the circumferential direction with respect to the seal cover, so that the slide ring is arranged at a fixed position on the seal cover. The structure is complicated, and the workability when replacing parts is poor.

本発明は、摺動環の取付構造の簡素化を図り、部品交換時の作業性を向上することを課題とする。 SUMMARY OF THE INVENTION An object of the present invention is to simplify the mounting structure of a sliding ring and to improve the workability at the time of parts replacement.

本発明の分割型メカニカルシールは、環状体を周方向に分割した第1カバー部材と第2カバー部材を有し、回転機械のケーシングに固定され、前記回転機械の回転軸を貫通させるシールカバーと、前記シールカバーに配置された固定環と、前記回転軸に配置された回転環とを有する摺動環とを備え、前記固定環は、環状体を周方向に分割した第1固定部材と第2固定部材を有し、周方向の回転が規制されるように前記シールカバー内に配置され、前記回転環は、環状体を周方向に分割した第1回転部材と第2回転部材を有し、前記固定環に対して前記回転軸の軸方向に隣接し、前記回転軸と一体に回転するように前記回転軸に配置されている。 A split type mechanical seal of the present invention has a first cover member and a second cover member obtained by splitting an annular body in the circumferential direction, is fixed to a casing of a rotating machine, and has a seal cover through which a rotating shaft of the rotating machine passes. and a sliding ring having a stationary ring arranged on the seal cover and a rotating ring arranged on the rotating shaft, the stationary ring comprising a first stationary member and a first stationary member obtained by dividing an annular body in the circumferential direction. 2 fixed members are arranged in the seal cover so as to restrict rotation in the circumferential direction, and the rotary ring has a first rotary member and a second rotary member obtained by dividing an annular body in the circumferential direction. , adjacent to the fixed ring in the axial direction of the rotary shaft and arranged on the rotary shaft so as to rotate together with the rotary shaft.

そして、第1態様の分割型メカニカルシールでは、前記回転環及び前記固定環のうちの一方の摺動環は、前記一方の摺動環の内周及び外周のうちの一方を支持する支持部を有する支持部材と、環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周及び外周のうちの他方に配置されたシール部材とによって支持され、前記回転軸の軸方向から見て、前記支持部材は、周方向に間隔をあけて複数配置されている。この場合、前記一方の摺動環は、前記支持部が配置される窪みを有することが好ましい。 In the split type mechanical seal of the first aspect, one sliding ring of the rotating ring and the fixed ring has a support portion that supports one of the inner circumference and the outer circumference of the one sliding ring. and a sealing member having a first member and a second member obtained by dividing an annular body in the circumferential direction and arranged on the other of the inner circumference and the outer circumference of the one sliding ring , When viewed from the axial direction of the rotating shaft, a plurality of the support members are arranged at intervals in the circumferential direction . In this case, the one slide ring preferably has a recess in which the support portion is arranged.

第2態様の分割型メカニカルシールでは、前記回転環及び前記固定環のうちの一方の摺動環は、前記回転環及び前記固定環のうちの他方の摺動環とは反対側に位置する前記一方の摺動環の端部を支持する支持部を有する支持部材と、環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周又は外周に配置されたシール部材とによって支持され、前記回転軸の軸方向から見て、前記支持部材は、周方向に間隔をあけて複数配置されている。この場合、前記一方の摺動環は、前記支持部が圧入される穴を有することが好ましい。 In the split type mechanical seal of the second aspect, one sliding ring of the rotating ring and the fixed ring is located on the opposite side to the other sliding ring of the rotating ring and the fixed ring. It has a support member having a support portion that supports the end of one of the slide rings, and a first member and a second member obtained by dividing an annular body in the circumferential direction. When viewed from the axial direction of the rotary shaft, a plurality of the support members are arranged at intervals in the circumferential direction . In this case, the one slide ring preferably has a hole into which the support portion is press-fitted.

第1態様及び第2態様の分割型メカニカルシールによれば、支持部材とシール部材によって一方の摺動環(回転環又は固定環)が支持され、シールカバー内の定位置に保持される。よって、複数のクリップ部材を用いる場合と比較して取付構造が簡素であり、摺動環(回転環及び固定環)の部品交換時の作業性も向上できる。 According to the split mechanical seals of the first aspect and the second aspect, one sliding ring (rotary ring or fixed ring) is supported by the supporting member and the sealing member and held at a fixed position within the seal cover. Therefore, the mounting structure is simpler than when a plurality of clip members are used, and the workability at the time of part replacement of the sliding ring (rotary ring and fixed ring) can be improved.

第2態様の分割型メカニカルシールは、前記一方の摺動環に対して前記他方の摺動環とは反対側に配置された押金と、前記押金を介して前記一方の摺動環を前記他方の摺動環に向けて付勢するスプリングとを更に備え、前記支持部材は前記押金に配置されている。 The split type mechanical seal of the second aspect includes a presser disposed on the side opposite to the other slide ring with respect to the one slide ring, and a presser that moves the one slide ring to the other slide ring via the presser. and a spring biasing the sliding ring toward the support member, the support member being located on the presser foot.

第1態様及び第2態様の分割型メカニカルシールは、環状体を周方向に分割した第1保持部材と第2保持部材を有し、前記回転軸に取り付けられたホルダを備え、前記一方の摺動環である前記回転環は、前記支持部材及び前記シール部材を介して前記ホルダに回転不可能に保持されている。ここで、第1態様における前記一方の摺動環を回転環、第2態様における前記一方の摺動環を固定環とすると、ボールポイントとして機能する支持部材とシール部材によって、固定環及びシールカバーと回転環及びホルダとを、それぞれ一対の半割ユニットとして組み立てることができる。その結果、回転軸の周囲には、一対の回転側分割ユニットと一対の固定側ユニットとを組み付ければ良いため、メカニカルシールの組立性を飛躍的に向上できる。 The split mechanical seals of the first aspect and the second aspect have a first holding member and a second holding member obtained by dividing an annular body in the circumferential direction, a holder attached to the rotating shaft, and a holder attached to the rotating shaft. The rotating ring, which is a driving ring, is non-rotatably held by the holder via the supporting member and the sealing member. Here, assuming that the one sliding ring in the first aspect is a rotating ring and the one sliding ring in the second aspect is a fixed ring, the fixed ring and the seal cover are formed by a support member functioning as a ball point and a seal member. , the rotary ring and the holder can each be assembled as a pair of half units. As a result, a pair of rotary-side split units and a pair of fixed-side units can be assembled around the rotary shaft, so that the ease of assembly of the mechanical seal can be dramatically improved.

前記支持部材は、前記支持部から突出した柱状の取付部を有する。前記取付部は、前記支持部に隣接するように、外周を切り欠いて形成した収縮部を有する。この態様によれば、収縮部によって取付部に対して支持部が変位可能であるため、第1態様では回転軸の軸方向における回転環の誤差を吸収でき、第2態様では回転軸の径方向における固定環の誤差を吸収できる。 The support member has a columnar mounting portion protruding from the support portion. The mounting portion has a constricted portion formed by notching the outer circumference so as to be adjacent to the support portion. According to this aspect, since the supporting portion can be displaced with respect to the mounting portion by the shrinking portion, the error of the rotating ring in the axial direction of the rotating shaft can be absorbed in the first aspect, and the radial direction of the rotating shaft can be absorbed in the second aspect. can absorb the error of the fixed ring in

また、第3態様の分割型メカニカルシールでは、前記回転環及び前記固定環のうちの一方の摺動環は、前記一方の摺動環の内周及び外周のうちの一方を支持する支持部を有する支持部材と、環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周及び外周のうちの他方に配置されたシール部材とによって支持され、前記支持部材は、前記支持部から突出した柱状の取付部を有する。 Further, in the split type mechanical seal of the third aspect, one sliding ring of the rotating ring and the fixed ring has a support portion that supports one of the inner circumference and the outer circumference of the one sliding ring. and a sealing member having a first member and a second member obtained by dividing an annular body in the circumferential direction and arranged on the other of the inner circumference and the outer circumference of the one sliding ring, The support member has a columnar mounting portion protruding from the support portion.
また、第4態様の分割型メカニカルシールでは、前記回転環及び前記固定環のうちの一方の摺動環は、前記回転環及び前記固定環のうちの他方の摺動環とは反対側に位置する前記一方の摺動環の端部を支持する支持部を有する支持部材と、環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周又は外周に配置されたシール部材とによって支持され、前記支持部材は、前記支持部から突出した柱状の取付部を有する。 Further, in the split type mechanical seal of the fourth aspect, one sliding ring of the rotating ring and the fixed ring is located on the opposite side to the other sliding ring of the rotating ring and the fixed ring. and a first member and a second member obtained by dividing an annular body in the circumferential direction. The support member has a columnar mounting portion protruding from the support portion.

本発明の分割型メカニカルシールでは、支持部材とシール部材によって回転環又は固定環を定位置に支持するため、これらの取付構造が簡素であり、回転環又は固定環の交換時の作業性を向上できる。 In the split type mechanical seal of the present invention, since the rotating ring or the fixed ring is supported at a fixed position by the supporting member and the sealing member, the mounting structure for these is simple, and the workability when replacing the rotating ring or the fixed ring is improved. can.

本発明の実施形態に係る分割型メカニカルシールの断面図。BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing of the split type mechanical seal which concerns on embodiment of this invention. ホルダ、シート、ワッシャ、及び押金の分解斜視図。3 is an exploded perspective view of the holder, seat, washer, and presser metal; FIG. 図1の一部の拡大断面図。FIG. 2 is an enlarged cross-sectional view of a portion of FIG. 1; 図3の一部を分解した断面図。FIG. 4 is a partially exploded cross-sectional view of FIG. 3 ; 図1の他部の拡大断面図。FIG. 2 is an enlarged sectional view of another part of FIG. 1; 第2の支持部材の拡大図。The enlarged view of a 2nd support member. 回転側ユニットを示す断面図。Sectional drawing which shows a rotation side unit. 固定側ユニットを示す断面図。Sectional drawing which shows a fixed side unit. シートの取付構造の第1変形例を示す断面図。FIG. 5 is a cross-sectional view showing a first modification of the seat mounting structure; シートの取付構造の第2変形例を示す断面図。FIG. 5 is a cross-sectional view showing a second modification of the seat mounting structure; シートの取付構造の第3変形例を示す断面図。FIG. 11 is a cross-sectional view showing a third modification of the seat mounting structure; シートの取付構造の第4変形例を示す断面図。FIG. 11 is a cross-sectional view showing a fourth modification of the seat mounting structure; シートの取付構造の第5変形例を示す断面図。FIG. 11 is a cross-sectional view showing a fifth modification of the seat mounting structure; シートの取付構造の第6変形例を示す断面図。FIG. 11 is a cross-sectional view showing a sixth modification of the seat mounting structure; 第1の支持部材の変形例を示す断面図。Sectional drawing which shows the modification of a 1st support member. 第1の支持部材の他の変形例を示す断面図。Sectional drawing which shows the other modification of a 1st support member. ワッシャの取付構造の第1変形例を示す断面図。Sectional drawing which shows the 1st modification of the attachment structure of a washer. ワッシャの取付構造の第2変形例を示す断面図。Sectional drawing which shows the 2nd modification of the attachment structure of a washer. 第2の支持部材の変形例を示す断面図。Sectional drawing which shows the modification of a 2nd support member. 第2の支持部材の他の変形例を示す断面図。Sectional drawing which shows the other modification of a 2nd support member. 第2の支持部材の他の変形例を示す断面図。Sectional drawing which shows the other modification of a 2nd support member.

以下、本発明の実施の形態を図面に従って説明する。 Embodiments of the present invention will be described below with reference to the drawings.

図1は、本発明の実施形態に係る分割型メカニカルシール(以下「メカニカルシール」と略す。)10を示す。このメカニカルシール10は、シール面28を形成する摺動環として、シート(回転環)30とワッシャ(固定環)40を備える。シート30は、第1の支持部材37と第1のシール部材38とによってホルダ12内の定位置に支持され、ワッシャ40は、第2の支持部材46と第2のシール部材47とによってシールカバー50内の定位置に支持されている。 FIG. 1 shows a split mechanical seal (hereinafter abbreviated as “mechanical seal”) 10 according to an embodiment of the present invention. The mechanical seal 10 includes a seat (rotary ring) 30 and a washer (stationary ring) 40 as sliding rings forming a seal surface 28 . The seat 30 is supported in place within the holder 12 by a first support member 37 and a first seal member 38 , and the washer 40 is a seal cover by a second support member 46 and a second seal member 47 . 50 in place.

(メカニカルシールの概要)
図1に示すように、メカニカルシール10は、回転機械(例えば排水ポンプ)のケーシング1の内部の液体が外部(大気側)に漏出することを防ぐために、ケーシング1における回転軸2が貫通される部分に配置される。図1では、メカニカルシール10の左側がケーシング1内に連通している。以下の説明では、図1において左側を内部側といい、図1において右側を外部側ということがある。
(Overview of mechanical seals)
As shown in FIG. 1, the mechanical seal 10 is penetrated by the rotating shaft 2 of the casing 1 in order to prevent the liquid inside the casing 1 of a rotating machine (for example, a drainage pump) from leaking to the outside (atmosphere side). placed in parts. In FIG. 1 , the left side of the mechanical seal 10 communicates with the inside of the casing 1 . In the following description, the left side in FIG. 1 may be referred to as the inner side, and the right side in FIG. 1 may be referred to as the outer side.

メカニカルシール10は、ホルダ12、シート30、及びワッシャ40を備え、これらがシールカバー50(封止液室52)内に配置されている。ワッシャ40をシート30に付勢するために、ワッシャ40の外部側には押金65とコイルスプリング71が更に配置されている。このメカニカルシール10は、シート30とワッシャ40によって、ケーシング1内に連通した封止液室52から、大気に連通した回転軸2側(径方向内側)への液体の流出を防ぐインサイド型である。 The mechanical seal 10 includes a holder 12, a seat 30, and a washer 40, which are arranged inside a seal cover 50 (sealing liquid chamber 52). A pusher 65 and a coil spring 71 are further arranged on the outer side of the washer 40 to urge the washer 40 against the seat 30 . The mechanical seal 10 is an inside type that prevents the liquid from flowing out from the sealing liquid chamber 52 communicating with the inside of the casing 1 to the rotary shaft 2 side (diameter direction inner side) communicating with the atmosphere by means of the sheet 30 and the washer 40. .

ホルダ12は、円環状であり、回転軸2におけるケーシング1の貫通部1aの近傍に配置され、セットボルト(図示せず)によって回転軸2に対する周方向の回転が規制されている。ホルダ12は、シート30を取り付ける円環状の取付凹部18を備え、シート30を回転軸2と一体に回転させる。 The holder 12 has an annular shape and is arranged in the vicinity of the through-hole 1a of the casing 1 of the rotating shaft 2, and its rotation in the circumferential direction with respect to the rotating shaft 2 is restricted by a set bolt (not shown). The holder 12 has an annular mounting recess 18 for mounting the seat 30 and rotates the seat 30 together with the rotating shaft 2 .

シート30は、円環状であり、取付凹部18に対して、周方向の回転が規制され、軸方向の移動が許容された状態で取り付けられている。シート30は、ホルダ12を介して回転軸2と一体に回転することで、図1において右側に位置するワッシャ40に対して摺接し、封止液室52から回転軸2に向けた液体の流動(漏出)を阻止する。 The seat 30 has an annular shape and is attached to the attachment recess 18 in a state in which rotation in the circumferential direction is restricted and movement in the axial direction is permitted. The sheet 30 rotates integrally with the rotating shaft 2 via the holder 12, thereby slidingly contacting the washer 40 located on the right side in FIG. (leakage).

ワッシャ40は、円環状であり、シート30の外部側に隣接して配置されている。シールカバー50に対してワッシャ40は、周方向の回転が規制され、軸方向の移動が許容された状態で取り付けられている。ワッシャ40には、シート30に向けて突出する断面四角形状の凸部40aが設けられており、この凸部40aの先端面がシート30との摺接によりシール面28を構成する。 The washer 40 has an annular shape and is arranged adjacent to the outer side of the seat 30 . The washer 40 is attached to the seal cover 50 in a state in which circumferential rotation is restricted and axial movement is permitted. The washer 40 is provided with a convex portion 40 a having a rectangular cross section that protrudes toward the seat 30 .

シールカバー50は、回転軸2が貫通される貫通孔51と、環状の封止液室52とを備える環状体である。回転軸2に沿って貫通されたボルト60をボルト穴1bに締め付けることで、シールカバー50はケーシング1に固定されている。 The seal cover 50 is an annular body having a through hole 51 through which the rotating shaft 2 is passed and an annular sealing liquid chamber 52 . The seal cover 50 is fixed to the casing 1 by tightening the bolts 60 passed along the rotating shaft 2 into the bolt holes 1b.

押金65は、円環状であり、シールカバー50の外端に形成されたフランジ部50aとワッシャ40の間に配置されている。コイルスプリング71の一端がフランジ部50aの装着穴50bに配置され、コイルスプリング71の他端が押金65の外端面に配置されている。コイルスプリング71の付勢によって押金65は、回転軸2の軸線に沿って、シート30に向けてワッシャ40を押圧する。 The pusher 65 has an annular shape and is arranged between the washer 40 and the flange 50 a formed at the outer end of the seal cover 50 . One end of the coil spring 71 is arranged in the mounting hole 50b of the flange portion 50a, and the other end of the coil spring 71 is arranged on the outer end surface of the presser 65. As shown in FIG. The pusher 65 presses the washer 40 toward the seat 30 along the axis of the rotating shaft 2 by the biasing force of the coil spring 71 .

図2を併せて参照すると、メカニカルシール10は、ホルダ12、シート30、ワッシャ40、シールカバー50、及び押金65を、それぞれ周方向に2分割した全分割型である。つまり、ホルダ12は、環状体を周方向に分割したそれぞれ半円環状の第1保持部材13Aと第2保持部材13Bを備える。シート30は、環状体を周方向に分割したそれぞれ半円環状の第1回転部材31Aと第2回転部材31Bを備える。ワッシャ40は、環状体を周方向に分割したそれぞれ半円環状の第1固定部材41Aと第2固定部材41Bを備える。シールカバー50は、環状体を周方向に分割したそれぞれ半円環状の第1カバー部材53Aと第2カバー部材53Bを備える。押金65は、環状体を周方向に分割したそれぞれ半円環状の第1押圧部材66Aと第2押圧部材66Bを備える。 Referring also to FIG. 2, the mechanical seal 10 is a fully split type in which the holder 12, the seat 30, the washer 40, the seal cover 50, and the pusher 65 are each split into two in the circumferential direction. In other words, the holder 12 includes a first holding member 13A and a second holding member 13B, each of which is formed by dividing an annular body in the circumferential direction. The seat 30 includes a semi-annular first rotating member 31A and a second rotating member 31B obtained by dividing an annular body in the circumferential direction. The washer 40 includes a semicircular first fixing member 41A and a second fixing member 41B obtained by dividing an annular body in the circumferential direction. The seal cover 50 includes a semicircular first cover member 53A and a second semicircular cover member 53B obtained by dividing an annular body in the circumferential direction. The pressing metal 65 includes a semicircular first pressing member 66A and a second pressing member 66B obtained by dividing an annular body in the circumferential direction.

全分割型のメカニカルシール10では、ケーシング1からシールカバー50を径方向外向きに取り外すことで、シート30とワッシャ40を露出させ、これらの取り外しと取り付けが可能である。よって、回転軸2の先端に配置したモータ(図示せず)を取り外すことなく、消耗部品であるシート30、ワッシャ40、及びコイルスプリング71等を交換できる。以下、シート30とワッシャ40の取付構造について、より具体的に説明する。 In the fully split type mechanical seal 10, the seat 30 and the washer 40 are exposed by removing the seal cover 50 radially outward from the casing 1, and these can be removed and attached. Therefore, the seat 30, the washer 40, the coil spring 71, etc., which are expendable parts, can be replaced without removing the motor (not shown) arranged at the tip of the rotary shaft 2. FIG. The mounting structure of the seat 30 and the washer 40 will be described in more detail below.

(ホルダの概要)
図1及び図2に示すように、ホルダ12を構成する保持部材13A,13Bの分割面には、図示しないピンを配置する位置決め用のピン穴14が形成されている。また、第1保持部材13Aの分割面にはボルト穴15が形成され、第2保持部材13Bの外周にはボルト穴15に対応する貫通孔16が形成されている。貫通孔16を通してボルト(図示せず)をボルト穴15に締め付けることで、回転軸2の周囲に保持部材13A,13Bが取り付けられる。さらに、第1保持部材13Aの分割面には凹溝17が設けられ、この凹溝17に保持部材13A,13B間をシールするガスケット24が配置される。
(Overview of holder)
As shown in FIGS. 1 and 2, the divided surfaces of the holding members 13A and 13B forming the holder 12 are formed with positioning pin holes 14 for arranging pins (not shown). A bolt hole 15 is formed in the dividing surface of the first holding member 13A, and a through hole 16 corresponding to the bolt hole 15 is formed in the outer circumference of the second holding member 13B. The holding members 13A and 13B are attached around the rotating shaft 2 by tightening bolts (not shown) through the through holes 16 into the bolt holes 15 . Furthermore, a groove 17 is provided on the dividing surface of the first holding member 13A, and a gasket 24 is arranged in the groove 17 to seal between the holding members 13A and 13B.

保持部材13A,13Bは、回転軸2の軸線に沿って外部側の端から内部側に窪む取付凹部18を備える。取付凹部18内に突出するように、保持部材13A,13Bには、シート30の周方向の回転を阻止するピン25がそれぞれ配置されている。保持部材13A,13Bの内周には、径方向外向きに窪み、周方向に延びる凹溝19が形成され、この凹溝19にホルダ12と回転軸2の間をシールするシール部材26が配置される。シール部材26には、無端状のOリングを用いてもよいし、1本の線条部材の両端に連結構造を設けた連結式シールリングを用いてもよい。また、シール部材26は、後述するシール部材38と同様に、Oリングを周方向に二分割した半円環状の第1部材と第2部材によって構成してもよい。 The holding members 13A and 13B are provided with mounting recesses 18 that are recessed inward from the outer end along the axis of the rotating shaft 2 . A pin 25 is arranged on each of the holding members 13A and 13B so as to protrude into the mounting recess 18 and prevents the seat 30 from rotating in the circumferential direction. A recessed groove 19 extending in the circumferential direction is formed on the inner periphery of the holding members 13A and 13B and is recessed radially outward. be done. The seal member 26 may be an endless O-ring, or may be a connected seal ring in which a connecting structure is provided at both ends of a single wire member. Also, the sealing member 26 may be composed of a semi-annular first member and a second member obtained by dividing an O-ring in the circumferential direction in the same manner as the sealing member 38 to be described later.

(シートの概要)
図1及び図2に示すように、シート30を構成する回転部材31A,31Bには、回転軸2の軸方向において内部側の端から外部側へ窪み、かつ、内周から径方向外向きに窪む係止溝32がそれぞれ設けられている。ホルダ12のピン25を係止溝32に係止することで、ホルダ12(回転軸2)に対するシート30の周方向の回転が規制され、ホルダ12に対するシート30の軸方向の移動は許容される。
(Outline of sheet)
As shown in FIGS. 1 and 2, the rotating members 31A and 31B constituting the seat 30 are recessed from the inner end to the outer side in the axial direction of the rotating shaft 2 and extend radially outward from the inner circumference. A recessed locking groove 32 is provided respectively. By locking the pin 25 of the holder 12 in the locking groove 32, the circumferential rotation of the seat 30 with respect to the holder 12 (rotating shaft 2) is restricted, and the axial movement of the seat 30 with respect to the holder 12 is permitted. .

回転軸2の軸方向から見て、支持部材37は、周方向に間隔をあけて取付凹部18内に複数(本実施形態では4個)取り付けられ、回転部材31A,31Bの内周面をそれぞれ支持している。シール部材38は、Oリングを周方向に二分割した半円環状の第1部材38aと第2部材38bとを備える。第1部材38a及び第2部材38bは、回転部材31A,31Bの外周面と保持部材13A,13Bの内周面との間にそれぞれ配置され、これらの間をシールする。 When viewed from the axial direction of the rotating shaft 2, a plurality of supporting members 37 (four in this embodiment) are mounted in the mounting recess 18 at intervals in the circumferential direction, and the inner peripheral surfaces of the rotating members 31A and 31B are respectively attached. Support. The sealing member 38 includes a semi-annular first member 38a and a second member 38b, which are obtained by dividing an O-ring into two in the circumferential direction. The first member 38a and the second member 38b are arranged between the outer peripheral surfaces of the rotary members 31A and 31B and the inner peripheral surfaces of the holding members 13A and 13B, respectively, to seal therebetween.

図3及び図7Aを併せて参照すると、シート30は、弾性を有する支持部材37とシール部材38によって、取付凹部18内にフローティング状態で保持されている。より具体的には、回転部材31Aの分割面が保持部材13Aの分割面と同一平面上に位置するように、保持部材13A内に回転部材31Aが配置され、回転部材31Aは、外周側の第1部材38aと内周側の支持部37aに挟まれて保持されることで、これらユニット化される。また、回転部材31Bの分割面が保持部材13Bの分割面と同一平面上に位置するように、保持部材13B内に回転部材31Bが配置され、回転部材31Bは、外周側の第2部材38bと内周側の支持部37aに挟まれて保持されることで、これらユニット化される。 3 and 7A together, the seat 30 is held in the mounting recess 18 in a floating state by a support member 37 and a seal member 38 having elasticity. More specifically, the rotating member 31A is arranged within the holding member 13A so that the dividing surface of the rotating member 31A is positioned on the same plane as the dividing surface of the holding member 13A. By being sandwiched and held between the first member 38a and the support portion 37a on the inner peripheral side, these are unitized. In addition, the rotating member 31B is arranged inside the holding member 13B so that the dividing surface of the rotating member 31B is positioned on the same plane as the dividing surface of the holding member 13B, and the rotating member 31B is arranged with the second member 38b on the outer peripheral side. These are unitized by being sandwiched and held by the support portions 37a on the inner peripheral side.

(ワッシャの概要)
図1及び図2に示すように、ワッシャ40を構成する固定部材41A,41Bは、シート30に当接してシール面28を形成する円環状の凸部40aを備える。外部側に位置する固定部材41A,41Bの端面には、周方向に間隔をあけて複数(本実施形態では4個)の係止穴42が設けられている。押金65に配置したピン70を係止穴42に配置することで、押金65(シールカバー50)に対するワッシャ40の周方向の回転が規制され、押金65に対するワッシャ40の軸方向の移動は許容される。
(Overview of washers)
As shown in FIGS. 1 and 2, the fixing members 41A and 41B that constitute the washer 40 are provided with an annular projection 40a that abuts against the seat 30 and forms the sealing surface 28. As shown in FIGS. A plurality (four in this embodiment) of locking holes 42 are provided at intervals in the circumferential direction on the end faces of the fixing members 41A and 41B positioned on the outer side. By arranging the pin 70 arranged in the pressing metal 65 in the locking hole 42, the circumferential rotation of the washer 40 with respect to the pressing metal 65 (seal cover 50) is restricted, and the axial movement of the washer 40 with respect to the pressing metal 65 is permitted. be.

回転軸2の軸方向から見て、支持部材46は、周方向に間隔をあけて押金65に複数(本実施形態では4個)取り付けられ、固定部材41A,41Bの外端側をそれぞれ支持している。シール部材47は、Oリングを周方向に二分割した半円環状の第1部材47aと第2部材47bとを備える。第1部材47a及び第2部材47bは、固定部材41A,41Bの外周面とカバー部材53A,53Bの内周面との間にそれぞれ配置され、これらの間をシールする。 When viewed from the axial direction of the rotating shaft 2, a plurality of support members 46 (four in this embodiment) are attached to the pressing metal 65 at intervals in the circumferential direction, and support the outer end sides of the fixed members 41A and 41B, respectively. ing. The seal member 47 includes a semi-annular first member 47a and a second member 47b, which are obtained by dividing an O-ring into two in the circumferential direction. The first member 47a and the second member 47b are arranged between the outer peripheral surfaces of the fixing members 41A and 41B and the inner peripheral surfaces of the cover members 53A and 53B, respectively, to seal therebetween.

図3及び図7Bを併せて参照すると、ワッシャ40は、弾性を有する支持部材46とシール部材47によって、シールカバー50内に保持されている。より具体的には、固定部材41Aの分割面がカバー部材53Aの分割面と同一平面上に位置するように、カバー部材53A内に固定部材41Aが配置され、固定部材41Aは、外周側の第1部材47aと内周側の支持部材46に挟まれて保持されることで、これらがユニットされる。固定部材41Bの分割面がカバー部材53Bの分割面と同一平面上に位置するように、カバー部材53B内に固定部材41Bが配置され、固定部材41Bは、外周側の第2部材47bと内周側の支持部材46に挟まれて保持されることで、これらがユニットされる。 Referring also to FIGS. 3 and 7B, washer 40 is held within seal cover 50 by elastic support member 46 and seal member 47 . More specifically, the fixing member 41A is arranged inside the cover member 53A so that the dividing surface of the fixing member 41A is positioned on the same plane as the dividing surface of the cover member 53A. These are united by being sandwiched and held between the first member 47a and the support member 46 on the inner peripheral side. The fixing member 41B is arranged inside the cover member 53B so that the dividing surface of the fixing member 41B is positioned on the same plane as the dividing surface of the cover member 53B. These are united by being sandwiched and held by the supporting members 46 on the side.

(シールカバーの概要)
図1に示すように、シールカバー50を構成するカバー部材53A,53Bの分割面には、図示しないピンを配置する位置決め用のピン穴54が形成されている。また、第1カバー部材53Aの分割面には一対のボルト穴55が形成され、第2カバー部材53Bの外周にはボルト穴55に対応する貫通孔(図示せず)が形成されている。貫通孔を通してボルト(図示せず)をボルト穴55に締め付けることで、カバー部材53A,53Bが円環状に保持される。さらに、第1カバー部材53Aの分割面には凹溝56が設けられ、この凹溝56にカバー部材53A,53B間をシールするガスケット61が配置される。
(Overview of seal cover)
As shown in FIG. 1, the divided surfaces of the cover members 53A and 53B forming the seal cover 50 are formed with positioning pin holes 54 for arranging pins (not shown). A pair of bolt holes 55 are formed in the dividing surface of the first cover member 53A, and through holes (not shown) corresponding to the bolt holes 55 are formed in the outer periphery of the second cover member 53B. The cover members 53A and 53B are annularly held by tightening bolts (not shown) through the through holes into the bolt holes 55 . Further, a groove 56 is provided on the dividing surface of the first cover member 53A, and a gasket 61 is arranged in the groove 56 to seal between the cover members 53A and 53B.

カバー部材53A,53Bは、封止液室52の外部側にシール部材47を配置する凹溝57を備える。カバー部材53A,53Bの組付状態で円環状をなすように、凹溝57は周方向に延びている。凹溝57は、カバー部材53A,53Bにおける径方向内側へ突出した部分に設けられている。凹溝57の外部側には、組付状態で円環状をなすように係止段部58が形成されている。 The cover members 53</b>A and 53</b>B are provided with grooves 57 in which the sealing member 47 is arranged on the outer side of the sealing liquid chamber 52 . The recessed groove 57 extends in the circumferential direction so as to form an annular shape when the cover members 53A and 53B are assembled. The concave groove 57 is provided in a portion of the cover members 53A, 53B protruding radially inward. A locking stepped portion 58 is formed on the outer side of the recessed groove 57 so as to form an annular shape in the assembled state.

(押金の概要)
図1及び図2に示すように、押金65を構成する押圧部材66A,66Bは、ピン70を配置する取付穴67を備える。取付穴67は、周方向に間隔をあけて複数(本実施形態では合計で4個)設けられている。取付穴67は、回転軸2の軸方向に沿って内部側から外部側へ延びる窪み(凹部)であり、外部側には閉鎖された壁を有する。また、押圧部材66A,66Bには、組付状態で円環状をなすように径方向外向きに突出するストッパ部68が設けられている。ストッパ部68が係止段部58に係止することで、コイルスプリング71の付勢による内部側に向けた押金65の移動が規制される。
(Overview of press metal)
As shown in FIGS. 1 and 2, the pressing members 66A and 66B forming the pressing metal 65 are provided with mounting holes 67 in which the pins 70 are arranged. A plurality of mounting holes 67 (four in total in this embodiment) are provided at intervals in the circumferential direction. The mounting hole 67 is a depression (recess) extending from the inner side to the outer side along the axial direction of the rotating shaft 2, and has a closed wall on the outer side. Further, the pressing members 66A and 66B are provided with a stopper portion 68 projecting radially outward so as to form an annular shape in the assembled state. Since the stopper portion 68 is locked to the locking stepped portion 58 , the inward movement of the pusher 65 due to the biasing force of the coil spring 71 is restricted.

押圧部材66A,66Bには、周方向に間隔をあけて複数(本実施形態では合計で4個)の貫通孔72が設けられている。シールカバー50のフランジ部50aには、貫通孔72に対応する貫通孔(図示せず)が設けられている。フランジ部50aを貫通させた棒状のドライブピン(図示せず)を貫通孔75に挿入することで、シールカバー50に対する押金65の周方向の回転が規制され、軸方向の移動が許容されている。 The pressing members 66A and 66B are provided with a plurality of (four in total in this embodiment) through holes 72 spaced apart in the circumferential direction. A through hole (not shown) corresponding to the through hole 72 is provided in the flange portion 50 a of the seal cover 50 . By inserting a rod-shaped drive pin (not shown) passing through the flange portion 50a into the through hole 75, the presser 65 is restricted from rotating in the circumferential direction with respect to the seal cover 50, and is allowed to move in the axial direction. .

(シートの取付構造の詳細)
図3及び図4に示すように、シート30は、取付凹部18内に配置され、第1の支持部材37と第1のシール部材38とによって回転軸2の径方向の定位置に保持されている。
(Details of seat mounting structure)
As shown in FIGS. 3 and 4, the seat 30 is placed in the mounting recess 18 and held at a fixed position in the radial direction of the rotating shaft 2 by a first support member 37 and a first seal member 38. there is

支持部材37は、弾性的に変形可能なゴム製であり、シート30を支持する支持部37aと、取付凹部18に取り付けるための取付部37bとを備える。シート30には支持部材37に係着するための位置決め溝33が設けられ、取付凹部18には支持部材37を取り付けるための取付穴20が設けられている。 The support member 37 is made of elastically deformable rubber, and includes a support portion 37 a that supports the seat 30 and an attachment portion 37 b for attachment to the attachment recess 18 . The seat 30 is provided with a positioning groove 33 for engagement with a support member 37 , and the mounting recess 18 is provided with a mounting hole 20 for mounting the support member 37 .

支持部37aは、概ね半球状であり、取付凹部18における径方向内側の壁から突出し、シート30(回転部材31A,31B)の内周面の一部を支持する。回転軸2の軸方向及び周方向における支持部37aの先端部分の横幅は、シート30に向けて次第に小さくなっている。 The support portion 37a has a substantially hemispherical shape, protrudes from the radially inner wall of the mounting recess 18, and supports a part of the inner peripheral surface of the seat 30 (rotating members 31A and 31B). The lateral width of the tip portion of the support portion 37 a in the axial direction and the circumferential direction of the rotating shaft 2 gradually decreases toward the seat 30 .

図2を併せて参照すると、位置決め溝33は、支持部37aが配置される窪みであり、回転部材31A,31Bの内周にそれぞれ設けられ、回転部材31A,31Bの組付状態で円環状をなす。回転軸2を径方向から見た位置決め溝33の形状は、半球状の支持部37aの直径の50%以上200%以下の直径の円弧状に形成されている。回転軸2の軸方向における位置決め溝33の最大幅は、支持部37aの直径の20%以上200%以下に設定されている。より具体的には、位置決め溝33の最大幅及び位置決め溝33の直径は、支持部37aの直径に対してゴム弾性で挿入可能な締め代30%以内に設定することが好ましい。 Referring also to FIG. 2, the positioning groove 33 is a depression in which the support portion 37a is arranged, and is provided on the inner periphery of each of the rotating members 31A and 31B. Eggplant. The shape of the positioning groove 33 when the rotating shaft 2 is viewed from the radial direction is formed in an arc shape having a diameter of 50% or more and 200% or less of the diameter of the hemispherical support portion 37a. The maximum width of the positioning groove 33 in the axial direction of the rotating shaft 2 is set to 20% or more and 200% or less of the diameter of the support portion 37a. More specifically, it is preferable to set the maximum width and the diameter of the positioning groove 33 within 30% of the diameter of the support portion 37a, which allows insertion due to rubber elasticity.

取付部37bは、円柱状であり、支持部37aから突出し、取付凹部18におけるシート30との対向部分に取り付けられる。取付部37bの直径は、半球状の支持部37aの直径よりも小さい。 The mounting portion 37 b has a columnar shape, protrudes from the support portion 37 a , and is mounted on a portion of the mounting recess 18 facing the seat 30 . The diameter of the attachment portion 37b is smaller than the diameter of the hemispherical support portion 37a.

取付穴20は、取付部37bが圧入される貫通した孔であり、シート30との対向部分である取付凹部18の内周壁(径方向内側の部分)に設けられている。取付穴20の直径は、取付部37bの直径の50%以上150%以下で、取付部37bを挿入できる範囲で形成されている。より具体的には、取付穴20の直径は、取付部37bの直径に対して、隙間があっても良いが、ゴム弾性で挿入可能な締め代30%以内に設定することが好ましい。 The mounting hole 20 is a penetrating hole into which the mounting portion 37b is press-fitted, and is provided in the inner peripheral wall (the radially inner portion) of the mounting recess 18 which is the portion facing the seat 30 . The diameter of the mounting hole 20 is 50% or more and 150% or less of the diameter of the mounting portion 37b, and is formed within a range in which the mounting portion 37b can be inserted. More specifically, the diameter of the mounting hole 20 may have a gap with respect to the diameter of the mounting portion 37b, but is preferably set within 30% of the interference that allows insertion due to rubber elasticity.

シール部材38は、前述のように、Oリングを周方向に二分割した半円環状の第1部材38aと第2部材38bとを備える。図2を参照すると、これらの両端は、それぞれ平坦面であり、組立状態では互いに圧接される。但し、第1部材38a及び第2部材38bを専用に設け、これらの一端と他端に、ボールジョイントのように互いに連結される連結構造をそれぞれ設けてもよい。 As described above, the sealing member 38 includes a semi-annular first member 38a and a second member 38b obtained by dividing an O-ring in the circumferential direction. Referring to FIG. 2, these ends are flat surfaces and press against each other in the assembled state. However, the first member 38a and the second member 38b may be provided for exclusive use, and connection structures that are connected to each other like ball joints may be provided at one end and the other end of these members.

シール部材38を配置するために、シート30には段部34が設けられ、取付凹部18には段部21が設けられている。第1部材38aと第2部材38bを合わせたシール部材38の全長は、円環状とした際の内径が段部34の外径以上の寸法に設定されている。シール部材38の線条部分は断面円形状であり、その直径は段部21,34間の隙間よりも大きい。 A stepped portion 34 is provided on the seat 30 and a stepped portion 21 is provided on the mounting recess 18 in order to arrange the sealing member 38 . The total length of the sealing member 38 including the first member 38a and the second member 38b is set so that the inner diameter of the annular ring is equal to or larger than the outer diameter of the stepped portion 34 . The filament portion of the seal member 38 has a circular cross section and a diameter larger than the gap between the stepped portions 21 and 34 .

シート30の段部34は、回転部材31A,31Bの外周面から径方向に内向きに窪み、内部側の端から外部側に向けて延びている。図3に最も明瞭に示すように、段部34によって回転部材31A,31Bの外部側には、シール部材38を覆うように径方向外向きに突出する突出部35が形成されている。 The stepped portion 34 of the seat 30 is recessed radially inward from the outer peripheral surfaces of the rotary members 31A and 31B and extends outward from the inner end. As shown most clearly in FIG. 3 , the stepped portion 34 forms a projecting portion 35 projecting radially outward so as to cover the seal member 38 on the outer side of the rotary members 31A and 31B.

取付凹部18の段部21は、取付凹部18における径方向外側の壁に環状の凹溝を設けることで形成されている。図3に最も明瞭に示すように、段部21によって取付凹部18の外部側には、シール部材38の一部を覆うように径方向内向きに突出する突出部22が形成されている。突出部22によって外部側へのOリング38の移動を規制することで、Oリング38を定位置に保持できる。 The stepped portion 21 of the mounting recess 18 is formed by providing an annular groove in the radially outer wall of the mounting recess 18 . As most clearly shown in FIG. 3 , the stepped portion 21 forms a radially inward protruding portion 22 on the outer side of the mounting recess 18 so as to cover a portion of the seal member 38 . By restricting movement of the O-ring 38 to the outside by the protrusion 22, the O-ring 38 can be held at a fixed position.

(ワッシャの取付構造の詳細)
図3及び図5に示すように、ワッシャ40は、シールカバー50内に配置され、第2の支持部材46と第2のシール部材47とによって回転軸2の径方向の定位置に保持されている。
(Details of washer mounting structure)
As shown in FIGS. 3 and 5, the washer 40 is placed inside the seal cover 50 and held at a fixed position in the radial direction of the rotary shaft 2 by a second support member 46 and a second seal member 47. there is

支持部材46は、弾性的に変形可能なゴム製であり、ワッシャ40に圧入される支持部46aと、押金65に取り付けるための取付部46bとを備える。ワッシャ40には支持部材46を係着するための位置決め穴43が設けられ、押金65には支持部材46を取り付けるための取付穴69が設けられている。 The support member 46 is made of elastically deformable rubber, and includes a support portion 46 a press-fitted into the washer 40 and an attachment portion 46 b for attachment to the pressing metal 65 . The washer 40 is provided with a positioning hole 43 for engaging the support member 46 , and the pressing metal 65 is provided with a mounting hole 69 for mounting the support member 46 .

支持部46aは、概ね球状であり、回転軸2の軸方向に沿って押金65(押圧部材66A,66B)から内部側へ突出し、ワッシャ40の外端の一部を支持する。回転軸2の軸方向及び周方向における支持部46aの先端部分の横幅は、ワッシャ40に向けて次第に小さくなっている。 The support portion 46 a has a generally spherical shape, protrudes inward from the pressing metal 65 (pressing members 66 A and 66 B) along the axial direction of the rotating shaft 2 , and supports a portion of the outer end of the washer 40 . The lateral width of the tip portion of the support portion 46 a in the axial direction and the circumferential direction of the rotating shaft 2 gradually decreases toward the washer 40 .

位置決め穴43は、支持部46aが配置される窪み(凹部)であり、回転軸2の軸方向に沿ってワッシャ40の外部側の端面から内部側へ延びている。図2を参照すると、ワッシャ40の端面には位置決め穴43の他に係止穴42が設けられており、これらが周方向に間隔をあけて交互に配置されている。位置決め穴43の直径は、球状の支持部46aの直径の50%以上150%以下で、支持部46aを挿入できる範囲で形成されている。より具体的には、位置決め穴43の直径は、支持部46aの直径に対して、隙間があっても良いが、ゴム弾性で挿入可能な締め代30%以内に設定することが好ましい。 The positioning hole 43 is a depression (recess) in which the support portion 46a is arranged, and extends inward from the outer end surface of the washer 40 along the axial direction of the rotating shaft 2 . Referring to FIG. 2, the end surface of the washer 40 is provided with locking holes 42 in addition to the positioning holes 43, which are alternately arranged at intervals in the circumferential direction. The diameter of the positioning hole 43 is 50% or more and 150% or less of the diameter of the spherical support portion 46a, and is formed within a range in which the support portion 46a can be inserted. More specifically, the diameter of the positioning hole 43 may have a gap with respect to the diameter of the support portion 46a, but it is preferable to set it within 30% of the interference that allows insertion due to rubber elasticity.

取付部46bは、円柱状であり、支持部46aから突出し、押金65におけるワッシャ40との対向部分に取り付けられる。取付部46bの直径は、球状の支持部46aの直径よりも小さい。取付部46bには、外周から突出する突起46cが設けられている。突起46cは、取付部46bを取り囲む円環状であり、取付部46bの軸線に沿って間隔をあけて複数(本実施形態では4個)設けられている。突起46cは、取付部46bから断面三角形状に突出しているが、断面四角形状に突出してもよく、その形状は必要に応じて変更が可能である。第1の支持部材37の取付部37bにも、このような突起を設けてもよい。 The attachment portion 46b is cylindrical, protrudes from the support portion 46a, and is attached to a portion of the pressing metal 65 facing the washer 40. As shown in FIG. The diameter of the attachment portion 46b is smaller than the diameter of the spherical support portion 46a. The mounting portion 46b is provided with a projection 46c projecting from the outer periphery. The projection 46c has an annular shape surrounding the mounting portion 46b, and a plurality of projections 46c (four in this embodiment) are provided at intervals along the axis of the mounting portion 46b. The protrusion 46c protrudes from the mounting portion 46b in a triangular cross-section, but may protrude in a square cross-section, and the shape can be changed as necessary. The mounting portion 37b of the first support member 37 may also be provided with such a projection.

取付穴69は、取付部46bが圧入される貫通した孔であり、回転軸2の軸方向に貫通するように押金65(押圧部材66A,66B)に設けられている。図2を併せて参照すると、押金65には取付穴69の他に取付穴67が設けられており、これらが周方向に間隔をあけて交互に配置されている。取付穴69の直径は、突起46cの外径の50%以上150%以下で、突起46c(取付部46b)を挿入できる範囲で形成されている。より具体的には、取付穴69の直径は、支持部46aの直径に対して、隙間があっても良いが、ゴム弾性で挿入可能な締め代30%以内に設定することが好ましい。 The mounting hole 69 is a through hole into which the mounting portion 46b is press-fitted, and is provided in the pressing metal 65 (pressing members 66A and 66B) so as to penetrate in the axial direction of the rotating shaft 2. As shown in FIG. Referring also to FIG. 2, the pressing metal 65 is provided with mounting holes 67 in addition to the mounting holes 69, which are alternately arranged at intervals in the circumferential direction. The diameter of the mounting hole 69 is 50% or more and 150% or less of the outer diameter of the projection 46c, and is formed within a range in which the projection 46c (mounting portion 46b) can be inserted. More specifically, the diameter of the mounting hole 69 may have a gap with respect to the diameter of the support portion 46a, but it is preferable to set it within 30% of the interference that allows insertion due to rubber elasticity.

シール部材47は、前述のように、Oリングを周方向に二分割した半円環状の第1部材47aと第2部材47bとを備える。図2を参照すると、これらの両端は、それぞれ平坦面であり、組立状態では互いに圧接される。但し、第1部材47a及び第2部材47bを専用に設け、これらの一端と他端に、ボールジョイントのように互いに連結される連結構造を設けてもよい。 As described above, the sealing member 47 includes a semi-annular first member 47a and a second member 47b obtained by dividing an O-ring in the circumferential direction. Referring to FIG. 2, these ends are flat surfaces and press against each other in the assembled state. However, the first member 47a and the second member 47b may be provided exclusively, and a connection structure may be provided at one end and the other end of these members so as to be connected to each other like a ball joint.

第1部材47aと第2部材47bを合わせたシール部材47の全長は、円環状とした状態でシールカバー50の凹溝57内に配置され、内径がワッシャ40の外径以上となる寸法に設定されている。シール部材47の線条部分は断面円形状であり、その直径は径方向における凹溝57の外面とワッシャ40の外周面との間の隙間よりも大きい。シール部材47は、組付時にワッシャ40をシールカバー50の定位置に位置決めする機能を兼ね備える。 The total length of the seal member 47, which is the combination of the first member 47a and the second member 47b, is set to a dimension that is arranged in the groove 57 of the seal cover 50 in an annular state, and that the inner diameter is equal to or larger than the outer diameter of the washer 40. It is The filament portion of the seal member 47 has a circular cross section, and its diameter is larger than the gap between the outer surface of the groove 57 and the outer peripheral surface of the washer 40 in the radial direction. The seal member 47 also has the function of positioning the washer 40 at a fixed position of the seal cover 50 during assembly.

ワッシャ40(固定部材41A,41B)の外周には、シール部材47に係着するための位置決め溝44が設けられている。位置決め溝44は、固定部材41A,41Bの外周にそれぞれ設けられた窪みであり、固定部材41A,41Bの組付状態で円環状をなす。回転軸2の径方向から見た位置決め溝44の形状は、シール部材47の線条部分の直径付近(概ね同一)の直径の円弧状に形成されている。回転軸2の軸方向における位置決め溝44の最大幅は、シール部材47の線条部分の直径よりも小さい。 A positioning groove 44 for engagement with a seal member 47 is provided on the outer periphery of the washer 40 (fixing members 41A and 41B). The positioning grooves 44 are recesses provided on the outer peripheries of the fixing members 41A and 41B, respectively, and form an annular shape when the fixing members 41A and 41B are assembled. The shape of the positioning groove 44 when viewed from the radial direction of the rotary shaft 2 is formed in an arc shape having a diameter near (generally the same as) the diameter of the linear portion of the seal member 47 . The maximum width of the positioning groove 44 in the axial direction of the rotary shaft 2 is smaller than the diameter of the linear portion of the seal member 47 .

位置決め溝44は、図3に示す組付状態でシール部材47よりも外部側に位置する。図7Bに示すように、ストッパ部68が係止段部58に当接し、押金65の内部側端面にワッシャ40の外部側端面が当接した状態で、シール部材47が係着する位置に位置決め溝44が形成されている。 The positioning groove 44 is located outside the seal member 47 in the assembled state shown in FIG. As shown in FIG. 7B, the stopper portion 68 is in contact with the locking stepped portion 58, and the outer end face of the washer 40 is in contact with the inner end face of the presser metal 65. Then, the seal member 47 is positioned at the engaging position. A groove 44 is formed.

(メカニカルシールの交換作業)
回転軸2からメカニカルシール10を取り外す際には、ケーシング1とシールカバー50を締結したボルト60を取り外すとともに、カバー部材53A,53Bを締結したボルトを取り外す。その後、ケーシング1から一対の静止側半割ユニット11B(図7B参照)を取り外した後、回転軸2の周囲から一対の回転側半割ユニット11A(図7A参照)を取り外す。一対の回転側半割ユニット11Aのうち、一方は第1保持部材13A、第1回転部材31A、支持部材37、及び第1部材38aからなり、他方は第2保持部材13B、第2回転部材31B、支持部材37、及び第2部材38bからなる。一対の静止側半割ユニット11Bのうち、一方は第1固定部材41A、支持部材46、第1部材47a、第1カバー部材53A、及び第1押圧部材66Aからなり、他方は第2固定部材41B、支持部材46、第2部材47b、第2カバー部材53B、及び第2押圧部材66Bからなる。
(Replacement of mechanical seal)
When removing the mechanical seal 10 from the rotary shaft 2, the bolts 60 that fasten the casing 1 and the seal cover 50 are removed, and the bolts fastening the cover members 53A and 53B are removed. Thereafter, after removing the pair of stationary-side half units 11B (see FIG. 7B) from the casing 1, the pair of rotating-side half units 11A (see FIG. 7A) are removed from the circumference of the rotary shaft 2. Of the pair of rotary-side half units 11A, one consists of a first holding member 13A, a first rotary member 31A, a support member 37, and a first member 38a, and the other consists of a second holding member 13B and a second rotary member 31B. , a support member 37, and a second member 38b. Of the pair of stationary side half units 11B, one consists of a first fixing member 41A, a support member 46, a first member 47a, a first cover member 53A, and a first pressing member 66A, and the other consists of a second fixing member 41B. , the support member 46, the second member 47b, the second cover member 53B, and the second pressing member 66B.

回転軸2にメカニカルシール10を取り付ける際には、まず、一対の回転側半割ユニット11A及び一対の静止側半割ユニット11Bを組み立てる。その後、組み立てた半割ユニット11A,11Bをケーシング1及び回転軸2に組み付ける。 When attaching the mechanical seal 10 to the rotary shaft 2, first, a pair of rotary side half units 11A and a pair of stationary side half units 11B are assembled. After that, the assembled half units 11A and 11B are assembled to the casing 1 and the rotating shaft 2. As shown in FIG.

回転側半割ユニット11Aの組み立ては、次のように行われる。まず、保持部材13A,13Bの取付凹部18内に支持部材37とシール部材38a,38bをそれぞれ配置し、これらの間に回転部材31A,31Bを圧入する。これにより、支持部材37とシール部材38a,38bの弾性によって、回転部材31A,31Bが保持部材13A,13Bにフローティング状態でそれぞれ保持される。 Assembly of the rotary-side half unit 11A is performed as follows. First, the support member 37 and the seal members 38a and 38b are placed in the mounting recesses 18 of the holding members 13A and 13B, respectively, and the rotating members 31A and 31B are press-fitted therebetween. As a result, the rotating members 31A and 31B are held by the holding members 13A and 13B in a floating state due to the elasticity of the supporting member 37 and the sealing members 38a and 38b.

静止側半割ユニット11Bの組み立ては、次のように行われる。まず、シールカバー50の装着穴50bにコイルスプリング71をそれぞれ配置した後、カバー部材53A,53Bの内周に押圧部材66A,66Bをそれぞれ配置する。この際、図7Bに示すように、ストッパ部68を係止段部58に当接させ、コイルスプリング71の先端を押金65の外部側の端面に配置する。続いて、フランジ部50aを貫通させてドライブピンを貫通孔72に差し込むことで、シールカバー50、押金65、及びコイルスプリング71を半割状態のサブユニットとする。 The stationary-side half unit 11B is assembled as follows. First, after the coil springs 71 are respectively arranged in the mounting holes 50b of the seal cover 50, the pressing members 66A and 66B are respectively arranged on the inner peripheries of the cover members 53A and 53B. At this time, as shown in FIG. 7B, the stopper portion 68 is brought into contact with the locking stepped portion 58, and the tip of the coil spring 71 is arranged on the end surface of the pusher 65 on the outer side. Subsequently, by inserting the drive pin into the through hole 72 through the flange portion 50a, the seal cover 50, the pressing metal 65, and the coil spring 71 are divided into halved subunits.

これにより、コイルスプリング71の付勢によってストッパ部68と係止段部58の当接状態を維持し、押圧部材66A,66Bがカバー部材53A,53B内に保持される。この状態で、カバー部材53A,53Bの凹溝57にシール部材47a,47bを取り付けるとともに、押金65の内部側にピン70と支持部材46を取り付ける。 As a result, the contacting state between the stopper portion 68 and the locking step portion 58 is maintained by the biasing force of the coil spring 71, and the pressing members 66A and 66B are held within the cover members 53A and 53B. In this state, the seal members 47a and 47b are attached to the grooves 57 of the cover members 53A and 53B, and the pin 70 and the support member 46 are attached to the inner side of the pressing metal 65. As shown in FIG.

その後、カバー部材53A,53B内に固定部材41A,41Bをそれぞれ配置し、ピン70を係止穴42にそれぞれ差し込むとともに、支持部材46の支持部46aを位置決め穴43に圧入する。これにより、支持部材46とシール部材47a,47bの弾性によって、カバー部材53A,53B内に固定部部材41A,41Bがフローティング状態でそれぞれ保持される。 After that, the fixing members 41A and 41B are placed inside the cover members 53A and 53B, the pins 70 are inserted into the locking holes 42, and the support portions 46a of the support members 46 are press-fitted into the positioning holes 43, respectively. As a result, the fixing members 41A and 41B are held in a floating state within the cover members 53A and 53B by the elasticity of the support member 46 and the seal members 47a and 47b.

回転軸2の周囲への半割ユニット11A,11Bの取り付けは、次のように行われる。 Attachment of the half units 11A and 11B around the rotating shaft 2 is performed as follows.

まず、一対の回転側半割ユニット11Aを回転軸2の所定位置に配置し、ピン穴14にピンを差し込んで保持部材13A,13Bの軸方向、周方向の位置合わせを行う。その後、貫通孔16を通してボルトをボルト穴15に締め付けることで、一対の回転部材31A,31Bを締結する。この際、支持部材37とシール部材38が弾性的に変形することで、回転部材31A,31Bの分割面同士の接触を阻害することなく組み付けることができる。よって、回転部材31A,31B間での段差の発生を防止できる。 First, the pair of rotary-side half-split units 11A are placed at predetermined positions on the rotary shaft 2, and pins are inserted into the pin holes 14 to align the holding members 13A and 13B in the axial and circumferential directions. After that, the pair of rotating members 31A and 31B are fastened by tightening the bolt through the through hole 16 and into the bolt hole 15. As shown in FIG. At this time, the supporting member 37 and the sealing member 38 are elastically deformed, so that the rotating members 31A and 31B can be assembled without impeding contact between the divided surfaces. Therefore, it is possible to prevent the occurrence of a step between the rotating members 31A and 31B.

次に、一対の静止側半割ユニット11Bを締結した一対の回転側半割ユニット11Aの外側に配置し、ピン穴54にピンを差し込んでカバー部材53A、53Bの軸方向、周方向の位置合わせを行う。その後、貫通穴を通してボルト穴55にボルトを締付けることで、一対のカバー部材53A、53Bを締結する。この際、支持部材46とシール部材47が弾性的に変形することで、固定部材41A,41Bの分割面同士の接触を阻害することなく組み付けることができる。よって、固定部材41A,41B間での段差の発生を防止できる。また、シート30の外部側端面にワッシャ40の凸部40aが当接することで、より段差を生じさせることなく、組み立てることができる。この時、ワッシャ40とシート30の摺動面同士を接触させながらカバー部材53A,53Bを固定することで、固定部材41A,41B間での段差をより小さくできる。 Next, the pair of stationary-side half units 11B is arranged outside the pair of rotating-side half units 11A, and pins are inserted into the pin holes 54 to align the cover members 53A and 53B in the axial and circumferential directions. I do. After that, the pair of cover members 53A and 53B are fastened by tightening bolts through the through holes and into the bolt holes 55 . At this time, the supporting member 46 and the sealing member 47 are elastically deformed, so that the fixing members 41A and 41B can be assembled without impeding contact between the divided surfaces. Therefore, it is possible to prevent the generation of a step between the fixing members 41A and 41B. Further, by bringing the convex portion 40a of the washer 40 into contact with the outer end face of the seat 30, the assembly can be performed without causing a step. At this time, by fixing the cover members 53A and 53B while the sliding surfaces of the washer 40 and the seat 30 are in contact with each other, the step between the fixing members 41A and 41B can be made smaller.

以上のように、支持部材37とシール部材38によってシート30を支持し、支持部材46とシール部材47によってワッシャ40を支持することで、これらがシールカバー50内の定位置に保持される。よって、複数のクリップ部材を用いる場合と比較して取付構造が簡素であり、シート30とワッシャ40の交換作業性も向上できる。 As described above, the seat 30 is supported by the support member 37 and the seal member 38 , and the washer 40 is supported by the support member 46 and the seal member 47 , so that they are held at fixed positions within the seal cover 50 . Therefore, the attachment structure is simpler than when a plurality of clip members are used, and the workability of replacing the seat 30 and the washer 40 can be improved.

シート30は支持部37aが配置される位置決め溝33を備え、ワッシャ40は支持部46aが配置される位置決め穴43を備えるため、支持部材37,46によってシート30とワッシャ40をシールカバー50内の定位置に確実に配置できる。また、ワッシャ40はシール部材47が配置される位置決め溝44を備え、シールカバー50の定められた保持位置にワッシャ40を仮保持できるため、組付時の作業性を向上できる。但し、支持部材46とシール部材47によってワッシャ40を仮保持できるため、位置決め溝44は設けなくてもよい。 The seat 30 has a positioning groove 33 in which the support portion 37a is arranged, and the washer 40 has a positioning hole 43 in which the support portion 46a is arranged. Can be placed securely in place. Further, the washer 40 has the positioning groove 44 in which the seal member 47 is arranged, and the washer 40 can be temporarily held at the predetermined holding position of the seal cover 50, so that workability during assembly can be improved. However, since the washer 40 can be temporarily held by the supporting member 46 and the sealing member 47, the positioning groove 44 may not be provided.

特に、本実施形態では、回転軸2の周囲にメカニカルシール10の構成部品を個別に組み付ける必要がなく、一対の回転側半割ユニット11Aと一対の静止側半割ユニット11Bをそれぞれ組み立てて、組み付けることができる。言い換えれば、ボールポイントとして機能する支持部材37,46を使用することで、シート30をホルダ12に簡単に支持でき、ワッシャ40をシールカバー50に簡単に支持できる。よって、組立時には、メカニカルシール10を構成するホルダ12、シート30、支持部材37、シール部材38、ワッシャ40、支持部材46、シール部材47、シールカバー50、及び押金65を、二対の半割ユニット11A,11Bとしてユニット化できる。その結果、回転軸2の周囲には、一対の回転側分割ユニット11Aと一対の固定側ユニット11Bとを組み付ければ良いため、メカニカルシール10の組立性を飛躍的に向上できる。 In particular, in this embodiment, there is no need to individually assemble the components of the mechanical seal 10 around the rotating shaft 2, and the pair of rotating side half units 11A and the pair of stationary side half units 11B are respectively assembled and assembled. be able to. In other words, the seat 30 can be easily supported on the holder 12 and the washer 40 can be easily supported on the seal cover 50 by using the support members 37 and 46 that function as ball points. Therefore, during assembly, the holder 12, the seat 30, the support member 37, the seal member 38, the washer 40, the support member 46, the seal member 47, the seal cover 50, and the pusher 65, which constitute the mechanical seal 10, are divided into two pairs of halves. It can be unitized as units 11A and 11B. As a result, it is sufficient to assemble a pair of rotary-side split units 11A and a pair of fixed-side units 11B around the rotating shaft 2, so that the assemblability of the mechanical seal 10 can be dramatically improved.

支持部材37,46の支持部37a,46aは、先細の先端部分を有する半球状又は球状であり、回転軸2の周方向へ間隔をあけて複数配置されている。よって、シート30及びワッシャ40を効果的に支持できる。しかも、シート30及びワッシャ40との間の抵抗を最小限に抑えることができるため、シート30とワッシャ40の着脱時の作業性を向上できる。 The support portions 37a, 46a of the support members 37, 46 are hemispherical or spherical with tapered tip portions, and are arranged in plurality in the circumferential direction of the rotating shaft 2 at intervals. Therefore, the seat 30 and the washer 40 can be effectively supported. Moreover, since the resistance between the seat 30 and the washer 40 can be minimized, the workability when attaching and detaching the seat 30 and the washer 40 can be improved.

支持部材37,46は、支持部37a,46aから突出する取付部37b,46bを備えるため、シート30及びワッシャ40と対向する部材(取付凹部18及び押金65)への支持部材37,46の取付状態を確実に維持できる。 Since the support members 37 and 46 are provided with mounting portions 37b and 46b projecting from the support portions 37a and 46a, the mounting of the support members 37 and 46 to the members (the mounting recess 18 and the pressing metal 65) facing the seat 30 and the washer 40 is difficult. status can be maintained.

(シートの取付構造の変形例)
シート30の取付構造は前記実施形態の構成に限られず、図8から図13のようにしてもよい。
(Modified example of seat mounting structure)
The mounting structure of the seat 30 is not limited to the structure of the above embodiment, and may be as shown in FIGS. 8 to 13. FIG.

支持部材37は、図8の第1変形例から図11の第4変形例では支持部37aと取付部37bによって構成され、図12の第5変形例と図13の第6変形例では支持部37aのみによって構成されている。 The support member 37 is composed of a support portion 37a and a mounting portion 37b in the first modification shown in FIG. 8 to the fourth modification shown in FIG. 37a only.

具体的には、図8に示す第1変形例では、支持部材37は前記実施形態と同一の構成である。位置決め溝33は断面三角形状の窪みによって構成されている。回転軸2の軸方向における位置決め溝33の最大幅は、半球状の支持部37aの直径の20%以上200%以下に設定されている。より具体的には、位置決め溝33の深さは、支持部37aの直径に対してゴム弾性で挿入可能な締め代30%以内とすることが好ましい。 Specifically, in the first modification shown in FIG. 8, the support member 37 has the same configuration as in the above embodiment. The positioning groove 33 is formed by a recess having a triangular cross section. The maximum width of the positioning groove 33 in the axial direction of the rotating shaft 2 is set to 20% or more and 200% or less of the diameter of the hemispherical support portion 37a. More specifically, it is preferable that the depth of the positioning groove 33 is within 30% of the diameter of the support portion 37a so that it can be inserted with rubber elasticity.

図9に示す第2変形例では、支持部材37の支持部37aは、取付部37bの先端に連続した円柱状の第1部分37cと、第1部分37cの先端に連続した円錐台形状の第2部分37dとで構成されている。第1部分37cの直径は取付部37bの直径よりも大きい。第2部分37dの最大直径は第1部分37cの直径と同一であり、第2部分37dの最小直径は取付部37bの直径よりも小さい。位置決め溝33は、断面台形状の窪みによって構成されている。回転軸2の軸方向における位置決め溝33の最大幅は、第2部分37dの最小直径よりも大きく、第2部分37dの最大直径の20%以上200%以下に設定されている。より具体的には、位置決め溝33の深さは、第2部分37dの直径に対してゴム弾性で挿入可能な締め代30%以内に設定することが好ましい。 In a second modification shown in FIG. 9, a support portion 37a of a support member 37 includes a columnar first portion 37c continuous with the tip of the mounting portion 37b and a truncated cone-shaped first portion 37c continuous with the tip of the first portion 37c. It consists of two parts 37d. The diameter of the first portion 37c is larger than the diameter of the mounting portion 37b. The maximum diameter of the second portion 37d is the same as the diameter of the first portion 37c, and the minimum diameter of the second portion 37d is smaller than the diameter of the mounting portion 37b. The positioning groove 33 is formed by a recess having a trapezoidal cross section. The maximum width of the positioning groove 33 in the axial direction of the rotating shaft 2 is larger than the minimum diameter of the second portion 37d and is set to 20% or more and 200% or less of the maximum diameter of the second portion 37d. More specifically, it is preferable to set the depth of the positioning groove 33 within 30% of the diameter of the second portion 37d so that it can be inserted with rubber elasticity.

図10に示す第3変形例では、支持部材37の支持部37aは、取付部37bの先端に連続した円柱状の第1部分37cと、第1部分37cの先端に連続した円錐形状の第2部分37dとで構成されている。第1部分37cの直径は取付部37bの直径よりも大きい。第2部分37dの最大直径は第1部分37cの直径と同一である。位置決め溝33は、断面台形状の第1部分33aと、第1部分33aと連通した断面四角形状の第2部分33bとを有する窪みによって構成されている。回転軸2の軸方向における位置決め溝33の第1部分33aの最大幅は、支持部37aの第2部分37dの最大直径の20%以上200%以下に設定されている。回転軸2の軸方向における位置決め溝33の第2部分33bの幅は、第1部分33aの最大幅よりも小さい。 In the third modified example shown in FIG. 10, the support portion 37a of the support member 37 includes a cylindrical first portion 37c continuous with the tip of the mounting portion 37b and a conical second portion continuous with the tip of the first portion 37c. 37d. The diameter of the first portion 37c is larger than the diameter of the mounting portion 37b. The maximum diameter of the second portion 37d is the same as the diameter of the first portion 37c. The positioning groove 33 is formed by a recess having a first portion 33a with a trapezoidal cross section and a second portion 33b with a square cross section communicating with the first portion 33a. The maximum width of the first portion 33a of the positioning groove 33 in the axial direction of the rotating shaft 2 is set to 20% or more and 200% or less of the maximum diameter of the second portion 37d of the support portion 37a. The width of the second portion 33b of the positioning groove 33 in the axial direction of the rotating shaft 2 is smaller than the maximum width of the first portion 33a.

図11に示す第4変形例では、支持部材37の支持部37aは、取付部37bの先端に連続した円柱状の膨出部によって構成されている。支持部37aの直径は取付部37bの直径よりも大きい。位置決め溝33は断面四角形状の窪みによって構成されている。回転軸2の軸方向における位置決め溝33の幅は、支持部37aの直径の70%以上130%以下に設定されている。 In a fourth modified example shown in FIG. 11, the supporting portion 37a of the supporting member 37 is configured by a cylindrical bulging portion continuous to the tip of the mounting portion 37b. The diameter of the support portion 37a is larger than the diameter of the attachment portion 37b. The positioning groove 33 is formed by a recess having a rectangular cross section. The width of the positioning groove 33 in the axial direction of the rotating shaft 2 is set to 70% or more and 130% or less of the diameter of the support portion 37a.

以上の第1変形例から第4変形例に示すように、支持部材37の支持部37aの形状は必要に応じて変更が可能である。また、支持部37aを配置する位置決め溝33の形状も必要に応じて変更が可能である。そして、支持部37aの形状と位置決め溝33の形状の組み合わせも、必要に応じて変更が可能である。 As shown in the above first to fourth modifications, the shape of the support portion 37a of the support member 37 can be changed as necessary. Also, the shape of the positioning groove 33 in which the support portion 37a is arranged can be changed as necessary. Also, the combination of the shape of the support portion 37a and the shape of the positioning groove 33 can be changed as necessary.

図12に示す第5変形例では、位置決め溝33は円弧状の窪みによって構成され、取付穴20は球面状(球の一部)の窪み(凹部)によって構成されている。回転軸2の軸方向における位置決め溝33の幅は支持部37aの直径の20%以上200%以下に設定されている。取付穴20の直径は球状の支持部37aの直径の50%以上200%以下に設定されている。 In a fifth modification shown in FIG. 12, the positioning groove 33 is formed by an arcuate recess, and the mounting hole 20 is formed by a spherical (part of a sphere) recess (recess). The width of the positioning groove 33 in the axial direction of the rotary shaft 2 is set to 20% or more and 200% or less of the diameter of the support portion 37a. The diameter of the mounting hole 20 is set to 50% or more and 200% or less of the diameter of the spherical support portion 37a.

図13に示す第6変形例では、位置決め溝33は断面三角形状の窪みによって構成され、取付穴20を円錐状の窪み(凹部)によって構成されている。回転軸2の軸方向における位置決め溝33の幅は支持部37aの直径の20%以上200%以下に設定されている。取付穴20の最大部分の直径は球状の支持部37aの直径の50%以上200%以下に設定されている。 In the sixth modification shown in FIG. 13, the positioning groove 33 is configured by a recess having a triangular cross section, and the mounting hole 20 is configured by a conical recess (recess). The width of the positioning groove 33 in the axial direction of the rotary shaft 2 is set to 20% or more and 200% or less of the diameter of the support portion 37a. The diameter of the largest portion of the mounting hole 20 is set to 50% or more and 200% or less of the diameter of the spherical support portion 37a.

支持部37aと取付部37bを備える支持部材37は図14のようにしてもよく、支持部37aのみからなる支持部材37は図15のようにしてもよい。 A support member 37 having a support portion 37a and a mounting portion 37b may be configured as shown in FIG. 14, and a support member 37 including only the support portion 37a may be configured as shown in FIG.

図14に示す変形例では、断面円形状の線条からなる支持部37aと、支持部37aの長手方向の中央から突出する1個の取付部37bとによって、支持部材37が構成されている。図15に示す他の変形例では、断面円形状の線条からなる支持部37aのみによって、支持部材37が構成されている。 In the modification shown in FIG. 14, a support member 37 is configured by a support portion 37a made of filaments having a circular cross section and one mounting portion 37b projecting from the center of the support portion 37a in the longitudinal direction. In another modification shown in FIG. 15, the support member 37 is configured only by a support portion 37a made of filaments having a circular cross section.

図15に示す支持部材37は、市販されているOリングを切断して用いることが好ましい。図15の支持部材37は、Oリングを4分割した構成であるが、Oリングを2分割して構成してもよく、分割数は必要に応じて変更が可能である。図14に示す支持部材37は、射出成形によって形成してもよいし、市販されているOリングを切断して取付部37bを固着することで形成してもよい。Oリングを切断して形成する場合、その分割数は必要に応じて変更が可能である。線条の支持部37aに突設する取付部37bの数も必要に応じて変更が可能である。 The support member 37 shown in FIG. 15 is preferably used by cutting a commercially available O-ring. Although the support member 37 in FIG. 15 has a structure in which the O-ring is divided into four parts, the O-ring may be divided into two parts, and the number of divisions can be changed as necessary. The support member 37 shown in FIG. 14 may be formed by injection molding, or may be formed by cutting a commercially available O-ring and fixing the attachment portion 37b. When the O-ring is formed by cutting, the number of divisions can be changed as required. The number of mounting portions 37b projecting from the support portion 37a of the filament can also be changed as required.

(ワッシャの取付構造の変形例)
ワッシャ40の取付構造は前記実施形態の構成に限られず、図16及び図17のようにしてもよい。
(Modified example of washer mounting structure)
The mounting structure of the washer 40 is not limited to the structure of the above embodiment, and may be as shown in FIGS. 16 and 17. FIG.

図16と図17の変形例では、支持部材46は、概ね球状に形成された支持部46a,46dと、突起46cを有する円柱状の取付部46bとを備える。支持部46a,46dの直径は、同一であるが、異なっていてもよい。取付部46b及び突起46cの直径は、支持部46a,46dの直径よりも小さい。また、図16と図17の変形例では、ワッシャ40の位置決め穴43と押金65の取付穴69とは、抜止機能を有する段付穴によって構成されている。 16 and 17, the support member 46 includes generally spherical support portions 46a and 46d and a cylindrical mounting portion 46b having a projection 46c. Although the diameters of the support portions 46a and 46d are the same, they may be different. The diameters of the attachment portion 46b and the projection 46c are smaller than the diameters of the support portions 46a and 46d. 16 and 17, the positioning hole 43 of the washer 40 and the mounting hole 69 of the presser metal 65 are formed by stepped holes having a retaining function.

図16に示す第1変形例では、位置決め穴43は、ワッシャ40の外部側の端面に隣接する第1部分43aと、第1部分43aの内部側に連続した第2部分43bとを備える。第1部分43aは断面円形状の孔であり、その直径は、球状の支持部46aの直径よりも小さく、円柱状の取付部46b(突起46c)の直径よりも大きい。第2部分43bは第1部分43aと同軸の凹部であり、その直径は支持部46aの直径の50%以上150%以下に設定されている。 In the first modification shown in FIG. 16, the positioning hole 43 includes a first portion 43a adjacent to the outer end face of the washer 40 and a second portion 43b continuous to the inner side of the first portion 43a. The first portion 43a is a hole with a circular cross-section, the diameter of which is smaller than the diameter of the spherical support portion 46a and larger than the diameter of the cylindrical mounting portion 46b (projection 46c). The second portion 43b is a recess coaxial with the first portion 43a, and its diameter is set to 50% or more and 150% or less of the diameter of the support portion 46a.

取付穴69は、押金65を貫通した孔であり、押金65の内部側の端面に隣接する第1部分69aと、第1部分69aの外部側に連続した第2部分69bと、第2部分69bの外部側に連続した第3部分69cとを備える。第1部分69aは断面円形状の孔であり、その直径は円柱状の取付部46bと概ね同一である。つまり、第1部分69aの直径は、球状の支持部46dの直径よりも小さく、取付部46bから突出した突起46cの直径よりも小さい。第2部分69bは第1部分69aと同軸の孔であり、その直径は、支持部46dの直径よりも小さく、取付部46b(突起46c)の直径よりも大きい。第3部分69cは他の部分69a,69bと同軸の孔であり、その直径は支持部46dの直径よりも大きい。 The mounting hole 69 is a hole penetrating the pressing metal 65, and includes a first portion 69a adjacent to the inner end surface of the pressing metal 65, a second portion 69b continuous to the outer side of the first portion 69a, and a second portion 69b. and a third portion 69c continuous to the outer side of the . The first portion 69a is a hole with a circular cross section, and its diameter is substantially the same as that of the cylindrical mounting portion 46b. That is, the diameter of the first portion 69a is smaller than the diameter of the spherical support portion 46d and smaller than the diameter of the protrusion 46c protruding from the mounting portion 46b. The second portion 69b is a hole coaxial with the first portion 69a and has a diameter smaller than that of the support portion 46d and larger than that of the mounting portion 46b (projection 46c). The third portion 69c is a hole coaxial with the other portions 69a, 69b and has a diameter larger than that of the support portion 46d.

図17に示す第2変形例では、位置決め穴43は、第1部分43aと第2部分43bの間に、第1部分43aから第2部分43bに向けて次第に拡開した傾斜部43cを備える。取付穴69は、第2部分69bと第3部分69cの間に、第2部分69bから第3部分69cに向けて次第に拡開した傾斜部69dを備える。 In a second modification shown in FIG. 17, the positioning hole 43 has an inclined portion 43c between the first portion 43a and the second portion 43b that gradually widens from the first portion 43a toward the second portion 43b. The mounting hole 69 has an inclined portion 69d between the second portion 69b and the third portion 69c that gradually expands from the second portion 69b toward the third portion 69c.

これらの変形例では、第1部分43aを通して支持部46aを第2部分43bに配置することで、第1部分43aと第2部分43bの間の段差(第2変形例の場合には傾斜部43c)に支持部46aが引っ掛かることで、抜け止めが図られる。また、第1部分69aと第2部分69bを通して支持部46dを第3部分69cに配置することで、第2部分69bと第3部分69cの間の段差(第2変形例の場合には傾斜部69d)に支持部46dが引っ掛かることで、抜け止めが図られる。 In these modifications, by arranging the support portion 46a on the second portion 43b through the first portion 43a, the step between the first portion 43a and the second portion 43b (in the case of the second modification, the inclined portion 43c ) to prevent the support portion 46a from coming off. Further, by arranging the support portion 46d on the third portion 69c through the first portion 69a and the second portion 69b, the step between the second portion 69b and the third portion 69c (in the case of the second modification, the inclined portion 69d) is engaged with the support portion 46d to prevent it from coming off.

支持部材46は、図18から図20のようにしてもよい。なお、図18から図20に示す支持部材46の変形例は、1個の支持部46aのみを備える構成であるが、一対の支持部46a,46dを備える構成であってもよい。 The support member 46 may be as shown in FIGS. 18-20. 18 to 20 have a configuration in which only one support portion 46a is provided, a configuration in which a pair of support portions 46a and 46d are provided may be employed.

図18に示す支持部材46の変形例では、取付部46bの外周に、突起46cの代わりに切欠溝46eが設けられている。切欠溝46eは、取付部46bの外周から内向き窪み、周方向へ円環状に延びている。切欠溝46eの形状は、三角形状としているが、四角形状としてもよく、必要に応じて変更が可能である。図19に示す支持部材46の変形例では、取付部46bの外周に、軸方向に沿って突起46cと切欠溝46eの両方が交互に設けられている。 In a modification of the support member 46 shown in FIG. 18, a notch groove 46e is provided on the outer periphery of the mounting portion 46b instead of the projection 46c. The notch groove 46e is recessed inward from the outer periphery of the mounting portion 46b and extends annularly in the circumferential direction. Although the shape of the notch groove 46e is triangular, it may be square, and can be changed as necessary. In a modified example of the support member 46 shown in FIG. 19, both protrusions 46c and notch grooves 46e are provided alternately along the axial direction on the outer periphery of the mounting portion 46b.

図20に示す支持部材46の変形例では、支持部46aに隣接するように、取付部46bの端に収縮部46fが形成されている。収縮部46fは、円柱状の取付部46bの外周を円環状に切り欠くことで形成されている。取付部46bの軸方向における収縮部46fの断面形状は、半円状に形成されているが、三角形状や四角形状であってもよく、必要に応じて変更が可能である。取付部46bは、図18のように切欠溝46eを備える構成であってもよく、図19のように突起46cと切欠溝46eの両方を備える構成であってもよい。第1の支持部材37の取付部37bにも、このような収縮部を設けてもよい。 In a modification of the support member 46 shown in FIG. 20, a contraction portion 46f is formed at the end of the mounting portion 46b so as to be adjacent to the support portion 46a. The contracted portion 46f is formed by cutting out an annular shape from the outer periphery of the cylindrical mounting portion 46b. The cross-sectional shape of the constricted portion 46f in the axial direction of the attachment portion 46b is formed in a semicircular shape, but may be a triangular shape or a square shape, and can be changed as necessary. The attachment portion 46b may be configured to include a notch groove 46e as shown in FIG. 18, or may be configured to include both a projection 46c and a notch groove 46e as shown in FIG. The attachment portion 37b of the first support member 37 may also be provided with such a contraction portion.

支持部材46と同様に、支持部材37の取付部37bにも、突起及び/又は切欠溝を設けてもよいし、支持部37aに隣接するように収縮部を設けてもよい。 As with the support member 46, the mounting portion 37b of the support member 37 may also be provided with projections and/or notch grooves, or may be provided with a contraction portion adjacent to the support portion 37a.

取付部に収縮部を形成した支持部材では、取付部に対して支持部が変位可能である。よって、ワッシャ40を支持する支持部材46の場合、回転軸2の径方向における位置決め穴43の形成位置の誤差を吸収できる。また、シート30を支持する支持部材37の場合、回転軸2の軸方向における位置決め溝33の形成位置の誤差を吸収できる。 In the support member having the contraction portion formed in the attachment portion, the support portion can be displaced with respect to the attachment portion. Therefore, in the case of the support member 46 that supports the washer 40 , errors in the formation positions of the positioning holes 43 in the radial direction of the rotating shaft 2 can be absorbed. Further, in the case of the support member 37 that supports the seat 30, errors in the position of the positioning groove 33 in the axial direction of the rotating shaft 2 can be absorbed.

なお、本発明の分割型メカニカルシール10は、前記実施形態の構成に限定されず、種々の変更が可能である。 Note that the split type mechanical seal 10 of the present invention is not limited to the configuration of the above-described embodiment, and various modifications are possible.

例えば、各変形例に示すように、支持部の形状は必要に応じて変更が可能であり、位置決め溝及び位置決め穴の形状も必要に応じて変更が可能であり、支持部の形状と位置決め溝及び位置決め穴の形状との組み合わせも必要に応じて変更が可能である。 For example, as shown in each modified example, the shape of the support portion can be changed as needed, the shape of the positioning groove and the positioning hole can also be changed as needed, and the shape of the support portion and the positioning groove can be changed as needed. And the combination with the shape of the positioning hole can also be changed as needed.

シート30の外周を支持部材37によって支持し、シート30の内周をシール部材38によって支持してもよい。シール部材47によってワッシャ40の内周を支持してもよい。支持部材(ボールポイント)とシール部材(Oリング)によって、シート30とワッシャ40の両方をそれぞれ支持したが、シート30及びワッシャ40のうちの一方だけを支持してもよい。 The outer periphery of the seat 30 may be supported by the support member 37 and the inner periphery of the seat 30 may be supported by the seal member 38 . The seal member 47 may support the inner circumference of the washer 40 . Although both the seat 30 and the washer 40 are supported by the support member (ball point) and the seal member (O-ring), only one of the seat 30 and the washer 40 may be supported.

支持部37aが配置されるシート30の窪みは、連続した円環状(無端状)の位置決め溝33に限られず、断続的に設けられた溝であってもよいし、円柱状又は円錐状の凹部であってもよい。支持部46aが圧入されるワッシャ40の穴は、凹状の位置決め穴43に限られず、ワッシャ40の周方向に延びる溝状であってもよい。 The depression of the seat 30 in which the support portion 37a is arranged is not limited to the continuous annular (endless) positioning groove 33, and may be an intermittently provided groove, or a cylindrical or conical depression. may be The hole of washer 40 into which support portion 46 a is press-fitted is not limited to concave positioning hole 43 , and may be a groove extending in the circumferential direction of washer 40 .

ホルダ12を含むシート30を内部側(ケーシング1側)に配置するとともに、ワッシャ40を外部側に配置したが、ワッシャ40を内部側に配置するとともに、ホルダ12を含むシート30を外部側に配置してもよい。 Although the seat 30 including the holder 12 is arranged on the inside (casing 1 side) and the washer 40 is arranged on the outside, the washer 40 is arranged inside and the seat 30 including the holder 12 is arranged on the outside. You may

メカニカルシール10は、押金65を介してコイルスプリング71によって付勢するワッシャ40を固定環としてシールカバー50に取り付けるとともに、付勢されないシート30を回転環としてホルダ12(回転軸2)に取り付けた静止形としたが、ワッシャ40を回転環としてホルダ12に取り付けるとともに、シート30を固定環としてシールカバー50に取り付けた回転形としてもよい。つまり、ホルダ12に、回転環としてのワッシャ40、支持部材46、シール部材47、押金65、及びコイルスプリング71配置し、シールカバー50に設けた取付凹部18と同様の取付凹部内に、固定環としてのシート30、支持部材37、及びシール部材38を配置してもよい。 The mechanical seal 10 is stationary, in which the washer 40 biased by the coil spring 71 via the pressing metal 65 is attached to the seal cover 50 as a stationary ring, and the non-biased seat 30 is attached to the holder 12 (rotating shaft 2) as a rotating ring. However, the washer 40 may be attached to the holder 12 as a rotating ring and the seat 30 may be attached to the seal cover 50 as a stationary ring. That is, the washer 40 as a rotary ring, the support member 46, the seal member 47, the presser 65, and the coil spring 71 are arranged in the holder 12, and the fixed ring A sheet 30, a support member 37, and a seal member 38 may be arranged.

メカニカルシール10は、シート30、ワッシャ40、押金65及びシールカバー50を周方向に分割すれば、ホルダ12は非分割の環状体としてもよい。 In the mechanical seal 10, if the seat 30, the washer 40, the presser 65 and the seal cover 50 are divided in the circumferential direction, the holder 12 may be an undivided annular body.

1…ケーシング
1a…貫通部
1b…ボルト穴
2…回転軸
10…分割型メカニカルシール
11A…回転側半割ユニット
11B…静止側半割ユニット
12…ホルダ
13A,13B…保持部材
14…ピン穴
15…ボルト穴
16…貫通孔
17…凹溝
18…取付凹部
19…凹溝
20…取付穴
21…段部
22…突出部
24…ガスケット
25…ピン
26…シール部材
28…シール面
30…シート(回転環又は固定環)
31A,31B…回転部材
32…係止溝
33…位置決め溝(窪み)
33a…第1部分
33b…第2部分
34…段部
35…突出部
37…支持部材
37a…支持部
37b…取付部
37c…第1部分
37d…第2部分
38…シール部材
38a…第1部材
38b…第2部材
40…ワッシャ(固定環又は回転環)
40a…凸部
41A,41B…固定部材
42…係止穴
43…位置決め穴(穴)
43a…第1部分
43b…第2部分
43c…傾斜部
44…位置決め溝
46…支持部材
46a…支持部
46b…取付部
46c…突起
46d…支持部
46e…切欠溝
46f…収縮部
47…シール部材
47a…第1部材
47b…第2部材
50…シールカバー
50a…フランジ部
50b…装着穴
51…貫通孔
52…封止液室
53A,53B…カバー部材
54…ピン穴
55…ボルト穴
56…凹溝
57…凹溝
58…係止段部
60…ボルト
61…ガスケット
65…押金
66A,66B…押圧部材
67…取付穴
68…ストッパ部
69…取付穴
69a…第1部分
69b…第2部分
69c…第3部分
69d…傾斜部
70…ピン
71…コイルスプリング
72…貫通孔
DESCRIPTION OF SYMBOLS 1... Casing 1a... Through part 1b... Bolt hole 2... Rotating shaft 10... Split type mechanical seal 11A... Rotating side half unit 11B... Stationary side half unit 12... Holder 13A, 13B... Holding member 14... Pin hole 15... Bolt hole 16 Through hole 17 Groove 18 Mounting recess 19 Groove 20 Mounting hole 21 Stepped portion 22 Protruding portion 24 Gasket 25 Pin 26 Seal member 28 Seal surface 30 Seat (rotary ring or fixed ring)
31A, 31B... Rotating member 32... Locking groove 33... Positioning groove (recess)
33a... First part 33b... Second part 34... Stepped part 35... Protruding part 37... Supporting member 37a... Supporting part 37b... Mounting part 37c... First part 37d... Second part 38... Sealing member 38a... First member 38b ... second member 40 ... washer (fixed ring or rotary ring)
40a... Convex part 41A, 41B... Fixing member 42... Locking hole 43... Positioning hole (hole)
43a... First part 43b... Second part 43c... Inclined part 44... Positioning groove 46... Supporting member 46a... Supporting part 46b... Mounting part 46c... Projection 46d... Supporting part 46e... Notch groove 46f... Shrinking part 47... Sealing member 47a First member 47b Second member 50 Seal cover 50a Flange 50b Mounting hole 51 Through hole 52 Sealing liquid chamber 53A, 53B Cover member 54 Pin hole 55 Bolt hole 56 Groove 57 Groove 58 Locking stepped portion 60 Bolt 61 Gasket 65 Pressing metal 66A, 66B Pressing member 67 Mounting hole 68 Stopper portion 69 Mounting hole 69a First portion 69b Second portion 69c Third Portion 69d Inclined portion 70 Pin 71 Coil spring 72 Through hole

Claims (10)

環状体を周方向に分割した第1カバー部材と第2カバー部材を有し、回転機械のケーシングに固定され、前記回転機械の回転軸を貫通させるシールカバーと、
前記シールカバーに配置された固定環と、前記回転軸に配置された回転環とを有する摺動環と
を備え、
前記固定環は、環状体を周方向に分割した第1固定部材と第2固定部材を有し、周方向の回転が規制されるように前記シールカバー内に配置され、
前記回転環は、環状体を周方向に分割した第1回転部材と第2回転部材を有し、前記固定環に対して前記回転軸の軸方向に隣接し、前記回転軸と一体に回転するように前記回転軸に配置されており、
前記回転環及び前記固定環のうちの一方の摺動環は、
前記一方の摺動環の内周及び外周のうちの一方を支持する支持部を有する支持部材と、
環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周及び外周のうちの他方に配置されたシール部材と
によって支持され
前記回転軸の軸方向から見て、前記支持部材は、周方向に間隔をあけて複数配置されている、分割型メカニカルシール。
a seal cover having a first cover member and a second cover member obtained by dividing an annular body in the circumferential direction, fixed to a casing of a rotating machine, and allowing a rotating shaft of the rotating machine to pass therethrough;
a sliding ring having a fixed ring arranged on the seal cover and a rotating ring arranged on the rotating shaft,
The stationary ring has a first stationary member and a second stationary member obtained by dividing an annular body in the circumferential direction, and is arranged in the seal cover so as to restrict rotation in the circumferential direction,
The rotating ring has a first rotating member and a second rotating member obtained by dividing an annular body in the circumferential direction, is adjacent to the fixed ring in the axial direction of the rotating shaft, and rotates integrally with the rotating shaft. is arranged on the rotating shaft such that
one sliding ring of the rotating ring and the stationary ring,
a support member having a support portion that supports one of the inner circumference and the outer circumference of the one slide ring;
having a first member and a second member obtained by dividing an annular body in the circumferential direction, and a seal member disposed on the other of the inner circumference and the outer circumference of the one sliding ring ;
A split type mechanical seal , wherein a plurality of the supporting members are arranged at intervals in the circumferential direction when viewed from the axial direction of the rotating shaft .
前記一方の摺動環は、前記支持部が配置される窪みを有する、請求項1に記載の分割型メカニカルシール。 2. The split mechanical seal according to claim 1, wherein said one sliding ring has a recess in which said support portion is arranged. 環状体を周方向に分割した第1カバー部材と第2カバー部材を有し、回転機械のケーシングに固定され、前記回転機械の回転軸を貫通させるシールカバーと、
前記シールカバーに配置された固定環と、前記回転軸に配置された回転環とを有する摺動環と
を備え、
前記固定環は、環状体を周方向に分割した第1固定部材と第2固定部材を有し、周方向の回転が規制されるように前記シールカバー内に配置され、
前記回転環は、環状体を周方向に分割した第1回転部材と第2回転部材を有し、前記固定環に対して前記回転軸の軸方向に隣接し、前記回転軸と一体に回転するように前記回転軸に配置されており、
前記回転環及び前記固定環のうちの一方の摺動環は、
前記回転環及び前記固定環のうちの他方の摺動環とは反対側に位置する前記一方の摺動環の端部を支持する支持部を有する支持部材と、
環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周又は外周に配置されたシール部材と
によって支持され
前記回転軸の軸方向から見て、前記支持部材は、周方向に間隔をあけて複数配置されている、分割型メカニカルシール。
a seal cover having a first cover member and a second cover member obtained by dividing an annular body in the circumferential direction, fixed to a casing of a rotating machine, and allowing a rotating shaft of the rotating machine to pass therethrough;
a sliding ring having a fixed ring arranged on the seal cover and a rotating ring arranged on the rotating shaft,
The stationary ring has a first stationary member and a second stationary member obtained by dividing an annular body in the circumferential direction, and is arranged in the seal cover so as to restrict rotation in the circumferential direction,
The rotating ring has a first rotating member and a second rotating member obtained by dividing an annular body in the circumferential direction, is adjacent to the fixed ring in the axial direction of the rotating shaft, and rotates integrally with the rotating shaft. is arranged on the rotating shaft such that
one sliding ring of the rotating ring and the stationary ring,
a support member having a support portion that supports an end portion of one of the rotating ring and the fixed ring that is located on the opposite side of the other sliding ring;
It has a first member and a second member obtained by dividing an annular body in the circumferential direction, and is supported by a sealing member arranged on the inner circumference or the outer circumference of the one sliding ring ,
A split type mechanical seal , wherein a plurality of the supporting members are arranged at intervals in the circumferential direction when viewed from the axial direction of the rotating shaft .
前記一方の摺動環は、前記支持部が圧入される穴を有する、請求項3に記載の分割型メカニカルシール。 4. The split type mechanical seal according to claim 3, wherein said one sliding ring has a hole into which said support portion is press-fitted. 前記一方の摺動環に対して前記他方の摺動環とは反対側に配置された押金と、
前記押金を介して前記一方の摺動環を前記他方の摺動環に向けて付勢するスプリングと
を更に備え、
前記支持部材は前記押金に配置されている、請求項3又は4に記載の分割型メカニカルシール。
a pusher disposed on the opposite side of the one slide ring from the other slide ring;
a spring that biases the one slide ring toward the other slide ring via the presser metal,
5. The split mechanical seal according to claim 3, wherein said support member is arranged on said presser metal.
環状体を周方向に分割した第1保持部材と第2保持部材を有し、前記回転軸に取り付けられたホルダを備え、
前記一方の摺動環である前記回転環は、前記支持部材及び前記シール部材を介して前記ホルダに回転不可能に保持されている、請求項1から5のいずれか1項に記載の分割型メカニカルシール。
A holder having a first holding member and a second holding member obtained by dividing an annular body in the circumferential direction and attached to the rotating shaft,
6. The split mold according to any one of claims 1 to 5, wherein said rotating ring, which is said one sliding ring, is non-rotatably held by said holder via said supporting member and said sealing member. mechanical seal.
前記支持部材は、前記支持部から突出した柱状の取付部を有する、請求項1からのいずれか1項に記載の分割型メカニカルシール。 The split mechanical seal according to any one of claims 1 to 6 , wherein said support member has a columnar mounting portion projecting from said support portion. 環状体を周方向に分割した第1カバー部材と第2カバー部材を有し、回転機械のケーシングに固定され、前記回転機械の回転軸を貫通させるシールカバーと、 a seal cover having a first cover member and a second cover member obtained by dividing an annular body in the circumferential direction, fixed to a casing of a rotating machine, and allowing a rotating shaft of the rotating machine to pass therethrough;
前記シールカバーに配置された固定環と、前記回転軸に配置された回転環とを有する摺動環と a sliding ring having a fixed ring arranged on the seal cover and a rotating ring arranged on the rotating shaft;
を備え、 with
前記固定環は、環状体を周方向に分割した第1固定部材と第2固定部材を有し、周方向の回転が規制されるように前記シールカバー内に配置され、 The stationary ring has a first stationary member and a second stationary member obtained by dividing an annular body in the circumferential direction, and is arranged in the seal cover so as to restrict rotation in the circumferential direction,
前記回転環は、環状体を周方向に分割した第1回転部材と第2回転部材を有し、前記固定環に対して前記回転軸の軸方向に隣接し、前記回転軸と一体に回転するように前記回転軸に配置されており、 The rotating ring has a first rotating member and a second rotating member obtained by dividing an annular body in the circumferential direction, is adjacent to the fixed ring in the axial direction of the rotating shaft, and rotates integrally with the rotating shaft. is arranged on the rotating shaft such that
前記回転環及び前記固定環のうちの一方の摺動環は、 one sliding ring of the rotating ring and the stationary ring,
前記一方の摺動環の内周及び外周のうちの一方を支持する支持部を有する支持部材と、 a support member having a support portion that supports one of the inner circumference and the outer circumference of the one slide ring;
環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周及び外周のうちの他方に配置されたシール部材と a seal member having a first member and a second member obtained by dividing an annular body in the circumferential direction, and arranged on the other of the inner circumference and the outer circumference of the one slide ring;
によって支持され、 backed by
前記支持部材は、前記支持部から突出した柱状の取付部を有する、分割型メカニカルシール。 The split mechanical seal, wherein the support member has a columnar mounting portion projecting from the support portion.
環状体を周方向に分割した第1カバー部材と第2カバー部材を有し、回転機械のケーシングに固定され、前記回転機械の回転軸を貫通させるシールカバーと、 a seal cover having a first cover member and a second cover member obtained by dividing an annular body in the circumferential direction, fixed to a casing of a rotating machine, and allowing a rotating shaft of the rotating machine to pass therethrough;
前記シールカバーに配置された固定環と、前記回転軸に配置された回転環とを有する摺動環と a sliding ring having a fixed ring arranged on the seal cover and a rotating ring arranged on the rotating shaft;
を備え、 with
前記固定環は、環状体を周方向に分割した第1固定部材と第2固定部材を有し、周方向の回転が規制されるように前記シールカバー内に配置され、 The stationary ring has a first stationary member and a second stationary member obtained by dividing an annular body in the circumferential direction, and is arranged in the seal cover so as to restrict rotation in the circumferential direction,
前記回転環は、環状体を周方向に分割した第1回転部材と第2回転部材を有し、前記固定環に対して前記回転軸の軸方向に隣接し、前記回転軸と一体に回転するように前記回転軸に配置されており、 The rotating ring has a first rotating member and a second rotating member obtained by dividing an annular body in the circumferential direction, is adjacent to the fixed ring in the axial direction of the rotating shaft, and rotates integrally with the rotating shaft. is arranged on the rotating shaft such that
前記回転環及び前記固定環のうちの一方の摺動環は、 one sliding ring of the rotating ring and the stationary ring,
前記回転環及び前記固定環のうちの他方の摺動環とは反対側に位置する前記一方の摺動環の端部を支持する支持部を有する支持部材と、 a support member having a support portion that supports an end portion of one of the rotating ring and the fixed ring that is located on the opposite side of the other sliding ring;
環状体を周方向に分割した第1部材と第2部材を有し、前記一方の摺動環の内周又は外周に配置されたシール部材と a sealing member having a first member and a second member obtained by dividing an annular body in the circumferential direction, and arranged on the inner circumference or the outer circumference of the one sliding ring;
によって支持され、 backed by
前記支持部材は、前記支持部から突出した柱状の取付部を有する、分割型メカニカルシール。 The split mechanical seal, wherein the support member has a columnar mounting portion protruding from the support portion.
前記取付部は、前記支持部に隣接するように、外周を切り欠いて形成した収縮部を有する、請求項7から9のいずれか1項に記載の分割型メカニカルシール。 The split type mechanical seal according to any one of claims 7 to 9 , wherein the mounting portion has a contraction portion formed by cutting an outer periphery so as to be adjacent to the support portion.
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