CN101067453B - Piece together type machinery seal element - Google Patents
Piece together type machinery seal element Download PDFInfo
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- CN101067453B CN101067453B CN2007100887937A CN200710088793A CN101067453B CN 101067453 B CN101067453 B CN 101067453B CN 2007100887937 A CN2007100887937 A CN 2007100887937A CN 200710088793 A CN200710088793 A CN 200710088793A CN 101067453 B CN101067453 B CN 101067453B
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Abstract
The invention provides a sectional mould which doesn't generate straining on the seal face of the seal ring and can tie up the sectional mould seal ring to remain suitable shape. The first and the second seal rings (5, 9) are the sectional mould seal ring divided along the circumferential direction, and the first and the second seal rings (5, 9) are fixed as the disk-annulus by the tying rings (4, 8) fixed on the keeping rings (3, 7). The opposite circle face of the sectional mould seal ring (5, 9) and the tying rings (4, 8) constitute the gradually enlarging conical surfaces (4a, 5b, 8a, 9b) along the direction from the tying rings (4, 8) to the keeping rings (3, 7). The sectional mould seal rings (5, 9) fix the tying rings (4, 8) on the keeping rings (3, 7) so that they are pushed to the axis direction terminal surfaces (3d, 7a) of the keeping rings (3, 7) by the terminal surface side elastic components (17, 29). And the sectional mould seal rings (5, 9) are kept on the inner peripheral faces (4a, 8a) of the tying rings (4, 8) with the help of the circle face side elastic components (18,30).
Description
Technical field
The present invention relates at least one side in a kind of the 2nd seal ring of the 1st seal ring and the rotation shaft side with the seal closure side constitutes along the circumferential piece together type machinery seal element (Splittable メ カ ニ カ Le シ one Le) of the sectional mo(u)ld seal ring of subdivision.
Background technique
Piece together type machinery seal element is along at least one side in the 2nd seal ring of the 1st seal ring of circumferential subdivision seal closure side and rotation shaft side, and this piece together type machinery seal element is divided into two kinds of interior mechanical sealing element (for example with reference to patent documentation 1 Fig. 2) and outer mechanical sealing elements (for example with reference to patent documentation 2 Fig. 2) substantially; Should in mechanical sealing element (ィ Application サ ィ De メ カ ニ カ Le シ one Le) in seal closure, dispose the 1st and the 2nd seal ring, through as the relative rotational slide contact action shielding of the seal face of the end face in opposite directions of two seal rings as the outer circumferential side zone of this relative rotational slide contact segment by fluid-encapsulated zone and as the non-tight fluid mass of all regions in it formation; Should the non-tight fluid mass of outer mechanical sealing element (ァ ゥ ト サ ィ De メ カ ニ カ Le シ one Le) seal closure outside dispose the 2nd seal ring, through as the relative rotational slide contact action shielding of the seal face of the end face in opposite directions of two seal rings as interior all regions of this relative rotational slide contact segment by fluid-encapsulated zone with as the regional non-tight fluid mass of its outer circumferential side formation.Even such piece together type machinery seal element is a large sealing spare, also can easily comprise decomposition, the assembling operation of maintenance operation, be suitable as the axle sealing mechanism of large-scale vertical pump etc.
Yet, in interior mechanical sealing element, need make seal closure form sectional mo(u)ld; And, owing to pressed in the seal closure effect by fluid-encapsulated, so; Compare with outer mechanical sealing element, complicated, the maximization of seal closure comprises the decomposition of seal closure, the very large labour of maintenance operation needs of assembling.
On the other hand, outside in the mechanical sealing element, owing to can seal closure be formed non-sectional mo(u)ld; So maintenance operation also only needs decomposition, the assembling of sectional mo(u)ld seal ring, the required labour of maintenance operation bears little; As piece together type machinery seal element, has good practicability.
Promptly; Outside existing in the mechanical sealing element, Fig. 2 of patent documentation 2～that kind shown in Figure 4 for example is along circumferential the 1st seal ring of subdivision seal closure side; Separate and constitute a plurality of circular-arc quadrants; Under the state of embedded the 1st seal ring, can securely will brace ring and be installed to the retaining ring that remains in seal closure, be fastened to retaining ring, thereby brace and keep the 1st seal ring by the circular form that the end face of circular-arc quadrant docks each other through bracing ring along the axial direction freedom; Brace the mounting or dismounting of the relative retaining ring of ring, thereby can carry out decomposition, the assembling of the 1st seal ring.
[patent documentation 1] japanese kokai publication hei 7-198043 communique
[patent documentation 2] TOHKEMY 2004-251376 communique
Yet; Above-mentioned existing outside in the mechanical sealing element (to call " existing Sealing " in the following text), directly brace the 1st seal ring by the metal ring that braces, so; When bracing ring when the fastening force of retaining ring is superfluous; When promptly bracing the power surplus of the sectional mo(u)ld seal ring that encircles generation, circular-arc quadrant produces strain, exists by the fluid-encapsulated partly danger of (the end face docking part of circular-arc quadrant) leakage of subdivision from the sealing ring.On the contrary; When brace ring retaining ring fastening insufficient, by the power that braces that braces the 1st seal ring that ring produces when not enough; The interior pressure (act on the 1st seal ring inner peripheral surface by fluid-encapsulated pressure) that acts on the 1st seal ring is opened the end face docking part of circular-arc quadrant, exists by the danger of fluid-encapsulated leakage.Such problem is producing the occasion of the 2nd seal ring as the sectional mo(u)ld seal ring similarly, particularly in the occasion that is made up of the sectional mo(u)ld seal ring pottery, soft carbon etc. such as the more weak silicon carbide of the intensity of relative tension load, significantly produced by the high occasion of fluid-encapsulated pressure.
Though also carried out such trial in the past, that is, produced the occasion of strain with the seal face of the surface of contact of the other side's seal ring by feasible conducts such as the excessive power that braces; When carrying out the assembling of this mechanical sealing element, when carrying out the maintenance of decomposition, replacing of sectional mo(u)ld seal ring, revise the sealing end face by so-called " facing-up operation ", or set the radial width of sealing end face terrifically little; Before commencement of commercial operation, carry out so-called " break-in operation "; But moving, such facing-up operation, break-in need the skilled of height, thus be difficult to carry out at user side, in addition; The worker also bears excessive burden, and economic burden is also big.In addition; The piece together type machinery seal element of setting the radial width of seal face extremely little is difficult to carry out the break-in operation under the dry conditions; So; The axle sealing mechanism of the standby operation type pump in advance that moves in for example can not the gas as carry out sometimes the reasonable time etc., its purposes is restricted significantly.
Summary of the invention
The present invention is used for solving the problem of the above-mentioned that kind of outer mechanical sealing element, and its purpose is to provide a kind of and can produce strain ground at its seal face the sectional mo(u)ld seal ring is not braced the piece together type machinery seal element that remains suitable cyclic form.
The present invention provides a kind of piece together type machinery seal element (outer mechanical sealing element); This piece together type machinery seal element constitutes the sectional mo(u)ld seal ring at circumferential subdivision with at least one side in the 1st seal ring and the 2nd seal ring; The 1st seal ring is located at the seal closure side; The 2nd seal ring is located on the running shaft that connects seal closure; By bracing to encircle to brace under the circular state this sectional mo(u)ld seal ring is fixedly being remained in retaining ring; This braces ring can securely be installed on retaining ring along the axial direction freedom; This retaining ring can remain on seal closure or the running shaft under state that axial direction moves or irremovable state, by as the relative rotational slide contact action of the seal face of the end face in opposite directions of the 1st seal ring and the 2nd seal ring to as interior all regions of its relative rotational slide contact segment by fluid-encapsulated zone with carry out shield gasket as the non-tight fluid mass in its outer circumferential side zone; Wherein: in order to achieve the above object; Particularly can move or can not movably retaining ring be remained on the seal closure or running shaft that the sectional mo(u)ld seal ring is set along axial direction along axial direction; The sectional mo(u)ld seal ring fixedly remains on the retaining ring by bracing ring under bracing to circular-arc state; Saidly brace that ring is outer to be embedded on the said sectional mo(u)ld seal ring and can securely to be installed on the said retaining ring along the axial direction freedom; Sectional mo(u)ld seal ring and the side face in opposite directions that braces ring that is embedded in it outward are constituted as the conical surface of the frusto-conical that enlarges gradually along the above-mentioned fastening direction that braces the hoop retaining ring; On the axial direction of sectional mo(u)ld seal ring and retaining ring in opposite directions between end face, clamp and have pooling feature and this is carried out the elastic material sheet or the rubber system seal ring as end face side resilient member of secondary seal in opposite directions between end face, and; At the sectional mo(u)ld seal ring and brace in opposite directions between side face of ring; To clamp sheet as the elastic material system of side face side resilient member with pooling feature with the said state that braces the conical surface comprehensive engagement of ring, fastening through bracing the hoop retaining ring, thus through end face side resilient member the pushing of sectional mo(u)ld seal ring is remained in the axial direction end face of retaining ring; And, through side face side resilient member the cooperation of sectional mo(u)ld seal ring is remained in the inner peripheral surface that braces ring.
Outside this sectional mo(u)ld in the mechanical sealing element, a side or the both sides of the 1st and the 2nd seal ring are constituted above-mentioned sectional mo(u)ld seal ring corresponding to air-proof condition etc.Constitute the occasion of sectional mo(u)ld seal ring at the 1st seal ring; The 1st seal ring remains circular formation by bracing ring (to call " the 1st braces ring " in the following text); The fixing retaining ring (to call " the 1st retaining ring " in the following text) of the 1st seal ring that keeps can remain in seal closure movably along axial direction; Between the 1st retaining ring and seal closure, install towards the spring component of the 2nd seal ring to the 1st seal ring pushing ground application of force.In addition; Constitute the occasion of sectional mo(u)ld seal ring at the 2nd seal ring; The 2nd seal ring remains circular form by bracing ring (to call " the 2nd braces ring " in the following text), and the fixing retaining ring (to call " the 2nd retaining ring " in the following text) of the 2nd seal ring that keeps fixedly remains in running shaft.
(followingly will be called " the 1st end face side resilient member " as end face side resilient member about the end face side resilient member that the 1st seal ring uses; To be called " the 2nd end face side resilient member " about the end face side resilient member that the 2nd seal ring uses); Preferably use sheet (for example sheet rubber) or rubber system seal ring (O リ Application グ) of such elastic material system etc., sheet of this elastic material system (for example sheet rubber) or rubber system seal ring etc. can have been given play to the sealing function that carries out secondary seal in opposite directions between end face to the axial direction of sectional mo(u)ld seal ring (the 1st seal ring or the 2nd seal ring) and retaining ring (the 1st retaining ring or the 2nd retaining ring).In addition; (followingly will be called " the 1st side face side resilient member " as side face side resilient member about the side face side resilient member that the 1st seal ring uses; To be called " the 2nd side face side resilient member " about the side face side resilient member that the 2nd seal ring uses); Preferably use the sheet (for example sheet rubber) of such elastic material system etc.; The sheets of this elastic material system etc. can and brace filling along its full week between side face in opposite directions of ring (the 1st braces ring or the 2nd braces ring) at sectional mo(u)ld seal ring (the 1st seal ring or the 2nd seal ring), have resiliency.
In piece together type machinery seal element of the present invention; Owing under the state that has clamped side face side resilient member, the sectional mo(u)ld seal ring is braced maintenance by bracing ring; And; End face side resilient member down fixedly is being remained in retaining ring by the state that clips, so, even by bracing the excessive or not enough occasion of the power that braces of encircling generation or acting on the high occasion of interior pressure of this sectional mo(u)ld seal ring; Amalgamation face is opened or produced strain, can the sectional mo(u)ld seal ring be kept being suitable circular form at seal face.Therefore,, do not need above-mentioned facing-up operation, break-in operation according to piece together type machinery seal element of the present invention, can be easily, high efficiency, comprise the assembling of this mechanical sealing element, the decomposition of sectional mo(u)ld seal ring, the upkeep operation of replacing economically.
Description of drawings
Fig. 1 is the vertical profile that cuts that an example of piece together type machinery seal element of the present invention is shown.
Fig. 2 is for amplifying the details drawing of wanting portion that Fig. 1 is shown.
Fig. 3 is vertical the cut profile corresponding with Fig. 2 that the initial state that utilizes the operation that braces that braces ring is shown.
Fig. 4 is the vertical back elevation that cuts of wanting portion along the IV-IV line of Fig. 1.
Fig. 5 is the vertical front elevation that cuts of wanting portion along the V-V line of Fig. 1.
Embodiment
Fig. 1 is the vertical profile that cuts that the form of implementation of piece together type machinery seal element of the present invention is shown; Fig. 2 is for amplifying the details drawing of wanting portion that Fig. 1 is shown; Fig. 3 is vertical the cut profile corresponding with Fig. 2 that braces initial state that the sectional mo(u)ld seal ring is shown; Fig. 4 is the vertical back elevation that cuts of wanting portion along the IV-IV line of Fig. 1, and Fig. 5 is the vertical front elevation that cuts of wanting portion along the V-V line of Fig. 1.In the explanation below, about mean Fig. 1～Fig. 3 about.
The piece together type machinery seal element of this form of implementation that kind as shown in Figure 1 is the outer mechanical sealing element of end face contact type, and the outer mechanical sealing element of this end face contact type has seal closure the 2, the 1st seal ring the 5, the 2nd seal ring 9, and spring component 10; Sealing cover 2 is installed on the casing (for example pump case etc.) 1 of rotating machinery; The 1st seal ring 5 can move freely and can not brace ring 4 through the 1st retaining ring 3 and the 1st with the relative rotation and remain in seal closure 2 along axial direction; The 2nd seal ring 9 braces the running shaft that ring 8 is fixed in this rotating machinery (for example impeller shaft etc.) through the 2nd retaining ring 7 and the 2nd; This spring component 10 is located at 3 of seal closure 2 and the 1st retaining rings, for 5 pushings of the 1st seal ring are contacted with the 2nd seal ring 9, towards the axial direction application of force; Through as the seal face 5a of the end face in opposite directions of two seal rings 5,9, the relative rotational slide contact action of 9a, to as interior all regions of its relative rotational slide contact segment 5a, 9a by the regional H of fluid-encapsulated zone (being communicated in the casing 1) with carry out shield gasket as the non-tight fluid mass in its outer circumferential side zone (casing 1 outer atmosphere zone) L.
The 1st seal ring 5 as Fig. 1 and shown in Figure 5; Be circular body; With front-end face (left side) constitute as with the seal face 5a of the smooth annular ring face of orthogonal axe; Outer circumferential face is constituted along proximal direction (right-hand to) conical surface 5b of the frusto-conical of enlarged gradually, and the 1st seal ring 5 constitutes along the sectional mo(u)ld seal ring that circumferentially is split into a plurality of (being 2 in this example) circular-arc quadrant 11,12.The 1st seal ring 5 braces the circular form that ring 4 braces and the amalgamation face of remaining (circumferential end faces of circular-arc quadrant 11,12) 11a, 12a dock by the 1st; And; Fixedly remain in the 1st retaining ring 3, can remain in seal closure 2 movably towards axial direction through the 1st retaining ring 3.
The 1st retaining ring 3 that kind as shown in Figure 1 are the cylindrical body of the metal non-subdivision that is made up of the holding part 3a of tubular and the annular flange portion 3b that is integrally formed at its front end (left part).The 1st retaining ring 3 can remain in holding part 3a the interior perimembranous 2a of seal closure 2 movably towards axial direction across seal ring 13.The 1st retaining ring 3 joins the conjugate foramen 3c that is formed at lip part 3b outer circumferential side to through the drive pin 14 that will be based in seal closure 2, thereby under the state that the axial direction in allowing prespecified range moves, stops the rotation of relative seal closure 2.Interior all side sections of the front-end face of the 1st retaining ring 3 (interior all side sections of the front-end face of lip part 3b) constitute the maintenance face 3d that catches and keep cardinal extremity face (right side) 5c of the 1st seal ring 5 at axial direction.Keeping the prominent drive pin 15 that can engage of establishing of face 3d with the coupling recess 5d of the cardinal extremity face 5c that is formed at the 1st seal ring 5.Through this drive pin 15 is engaged in coupling recess 5d, thereby stop the rotation of the 1st seal ring 5 relative the 1st retaining rings 3.
The 1st brace the ring 4 as Fig. 1 and shown in Figure 5 be the circular body of metal non-subdivision, can securely be installed on the lip part 3b of the 1st retaining ring 3 along the axial direction freedom by the clamping bolt 16 of suitable quantity.Brace the 1st that ring 4 inner peripheral surface forms and the corresponding conical surface of outer circumferential face (conical surface) 5b of the 1st seal ring 5, promptly along the conical surface 4a of the frusto-conical of proximal direction (right-hand to) hole enlargement gradually.
Like this; As the 1st seal ring 5 of sectional mo(u)ld seal ring as Fig. 1 is shown in Figure 3; Be fastened to the 1st retaining ring 3 through bracing ring 4, thereby under the state that the 1st end face side resilient member 17 and the 1st side face side resilient member 18 are in therebetween, fixedly remain in the 1st retaining ring 3 the 1st.
Promptly; That kind as shown in Figure 3; Be in opposite directions between the end face under the state of (between the maintenance face 3d of the cardinal extremity face 5c of the 1st seal ring 5 and the 1st retaining ring 3) of axial direction of the 1st seal ring 5 and the 1st retaining ring 3 at the 1st end face side resilient member 17; And the 1st side face side resilient member 18 be in the 1st seal ring 5 and the 1st brace ring 4 in opposite directions between side face (as the conical surface 5b of the outer circumferential face of the 1st seal ring 5 with brace between the conical surface 4a of inner peripheral surface of ring 4 as the 1st) state under, will be embedded in the 1st of the 1st seal ring 5 outward by clamping bolt 16 and brace and encircle 4 and be installed on the 1st retaining ring 3.Then; Make clamping bolt 16 fastening successively from this state; Promptly make the 1st to brace ring 4 and move towards the 1st retaining ring 3 along axial direction; Then brace ring 4 conical surface 4a and brace power and pushing force in 5 effects of the 1st seal ring by the 1st, this brace power through the 1st side face side resilient member 18 towards the direction pushing that makes its undergauge, this pushing force through the 1st end face side resilient member 17 along axial direction towards the 1st retaining ring 3 pushings the 1st seal ring 5.The result; As Fig. 2 and shown in Figure 4; By the above-mentioned power of bracing with the 1st side face side resilient member 18 crampings in the 1st seal ring 5 and brace under ring 4 the 4a of side face in opposite directions, the state between 5b; The 1st seal ring 5 is braced and is remained the circular form of its amalgamation face 11a, 12a butt joint; And, by above-mentioned pushing force with the 1st end face side resilient member 17 crampings in the 3d of end face in opposite directions of the axial direction of the 1st seal ring 5 and the 1st retaining ring 3, the state between 5c, the 1st seal ring 5 is fixedly remained in the maintenance face 3d of the 1st retaining ring 3.The 1st end face side resilient member 17 uses sheet, the rubber system seal ring of such elastic material system; The pushing force of the maintenance face 3d that the sheet of this elastic material system, rubber system seal ring can prevent in the 1st retaining ring 3 except performance causes the pooling feature of distortion (generation strain) of the 1st seal ring 5; Also can bring into play both 3,5 sealing functions that carry out secondary seal; In illustrated example, use circular sheet rubber.The 1st end face side resilient member (sheet rubber) 17 as shown in Figure 1 such form drive pins 15 pass through hole 17a.In addition; The 1st side face side resilient member 18 uses the sheet of such elastic material system etc.; The sheet of this elastic material system etc. has can prevent that the 1st braces the pooling feature that ring 4 the power that braces, fluid-encapsulated pressure (interior pressure) cause 5 distortion (generation strain) of the 1st seal ring; In illustrated example, use sheet rubber in the outer circumferential face 5b of the 1st seal ring 5 its complete all package of upper edge.
The 2nd seal ring 9 constitutes the sectional mo(u)ld seal ring same with the 1st seal ring 5.Promptly; The 2nd seal ring 9 as Fig. 1 and shown in Figure 6 be circular body; Along circumferentially being split into a plurality of (being 2 in illustrated example) circular- arc quadrant 21,22; This circular body with front-end face (right side) form with orthogonal axe, as the seal face 9a of smooth annular ring face, and, outer circumferential face is constituted towards the conical surface 9b of the frusto-conical of proximal direction (right-hand to) hole enlargement gradually.The 2nd seal ring 9 braces the circular form that ring 8 braces the amalgamation face of remaining (circumferential end faces of circular-arc quadrant 21,22) 21a, 22a butt joint by the 2nd.The 2nd seal ring 9 fixedly remains in the 2nd retaining ring 7, is fixed in running shaft 6 through the 2nd retaining ring 7.The the 1st and the 2nd seal ring 5,9 all is made up of hard materials such as silicon carbide corresponding to air-proof condition etc., or a side is made up of hard materials such as potteries such as silicon carbide, superhard alloys, and the opposing party is by constituting than its soft carbon etc.
The 2nd retaining ring 7 that kind as shown in Figure 3 are the cylindrical body of metal non-subdivision, fixedly remain in running shaft 6 through retaining ring 23.Retaining ring 23 connects into ring-type along circumferentially being split into two-part by connecting bolt 24, thereby cooperates and be fixed in running shaft 6.The 2nd retaining ring 7 is carrying out being intercalated under the secondary seal state running shaft 6 by 25 pairs of seal rings and 6 on running shaft, and, be connected in retaining ring 23 by connecting bolt 26, thereby be fixed in running shaft 6.Interior all side sections of the front-end face of the 2nd retaining ring 7 (right side) constitute the maintenance face 7a that stops and keep cardinal extremity face (left side) 9c of the 2nd seal ring 9 at axial direction.Keeping the prominent drive pin 27 that can engage of establishing of face 7a with the coupling recess 9d of the cardinal extremity face 9c that is formed at the 2nd seal ring 9.Through this drive pin 27 is engaged in coupling recess 9d, thereby stop the relative rotation of the 2nd seal ring 9 relative the 2nd retaining rings 7.
The 2nd brace ring 8 as Fig. 1 and shown in Figure 6, be the circular body of metal non-subdivision, can securely be installed on the 2nd retaining ring 7 along the axial direction freedom by the clamping bolt 28 of suitable quantity.Brace the 2nd that ring 8 inner peripheral surface forms and the corresponding conical surface of outer circumferential face (conical surface) 9b of the 2nd seal ring 9, promptly along the conical surface 8a of the frusto-conical of proximal direction (left to) hole enlargement gradually.
Like this; The 2nd seal ring 9 that kind as shown in Figure 1 as the sectional mo(u)ld seal ring; Be anchored on the 2nd retaining ring 7 through bracing ring 8, thereby the 2nd end face side resilient member 29 and the 2nd side face side resilient member 30 are fixedly being remained on the 2nd retaining ring 7 by under the state that is clamping the 2nd.
That is, make the 2nd end face side resilient member 29 be in (between the maintenance face 7a of the cardinal extremity face 9c of the 2nd seal ring 9 and the 2nd retaining ring 7) between end face in opposite directions of the axial direction of the 2nd seal ring 9 and the 2nd retaining ring 7.In addition; Make the 2nd side face side resilient member 30 be in the 2nd seal ring 9 and the 2nd brace ring 8 in opposite directions between side face (as the conical surface 9b of the outer circumferential face of the 2nd seal ring 9 with brace between the conical surface 8a of inner peripheral surface of ring 8 as the 2nd) state under, will be embedded in the 2nd of the 2nd seal ring 9 outward by clamping bolt 28 and brace and encircle 8 and be installed on the 2nd retaining ring 7.Then,, make clamping bolt 28 fastening successively, make the 2nd to brace ring 8 and carry out axial direction and move towards the 2nd retaining ring 7 from this state.Like this; Brace ring 8 conical surface 8a by the 2nd and brace power and pushing force in 9 effects of the 2nd seal ring; This braces power towards the direction of its undergauge is pushed through the 2nd side face side resilient member 30, and this pushing force pushes 2nd seal ring 9 along axial direction towards the 2nd retaining ring 7 through the 2nd end face side resilient member 29.The result; As Fig. 1 and shown in Figure 5; The 2nd side face side resilient member 30 crampings are being braced under ring 8 the 8a of side face in opposite directions, the state between 9b in the 2nd seal ring 9 and the 2nd, the 2nd seal ring 9 is being braced and remaining the circular form of its amalgamation face 21a, 22a butt joint, and; With the 2nd end face side resilient member 29 crampings under the 7a of end face in opposite directions of the axial direction of the 2nd seal ring 9 and the 2nd retaining ring 7, state between 9c, the 2nd seal ring 9 is fixedly remained in the maintenance face 7a of the 2nd retaining ring 7.; As the 2nd end face side resilient member 29; Use sheet, the rubber system seal ring of such elastic material system, the sheet of this elastic material system, rubber system seal ring, also can be brought into play both 7,9 sealing functions that carry out secondary seal the pushing force that keeps face 7a causes the pooling feature of distortion (generation strain) of the 2nd seal ring 9 except performance can prevent the 2nd retaining ring 7; In illustrated example, use circular sheet rubber.The 2nd end face side resilient member (seal ring) 29 engages the seal groove that remains to the maintenance face of being formed at 7a in the position of not interfering with drive pin 47, under contactless state to carrying out secondary seal between both 7a of end face in opposite directions of 7,9,9c.In addition; As the 2nd side face side resilient member 30; Use the sheet of elastic material system etc., the sheet of this elastic material system etc. have can prevent the 2nd brace ring 8 the power that braces, fluid-encapsulated pressure (interior pressure) cause the pooling feature of the 2nd seal ring 9 distortion (generation strain), in this example; Same with the 1st side face side resilient member 18, the outer circumferential face 9b that uses at the 2nd seal ring 9 is along the sheet rubber of its complete all package.
In the piece together type machinery seal element that as above, constitutes; Brace the clamping bolt 16 or 28 that ring 4 or 8 is installed on the 1st retaining ring 3 or 7 with the 1st like fastening being used for; Then brace sectional mo(u) ld seal ring 5 or 9 by conical surface 4a, 5b or 8a in opposite directions, the cam action (wedging action) of 9b; And, be pressed to the 1st and brace ring 4 or 7.As a result, this sectional mo(u) ld seal ring 5 or 9 is braced remains circular- arc quadrant 11,12 or 21, the 22 circular form of butt joint each other, and fixedly remains in retaining ring 4 or 7.
At this moment; Sectional mo(u) ld seal ring 5,9 is in the state that braces 4,7 on ring by side face side resilient member (sheet rubber 18,30) and is braced; So, make that in the fastening surplus of retaining ring 3,7 also the pooling feature (resiliently deformable) by side face side resilient member 18,30 absorbs the excess quantity that this braces power by bracing the power that the braces surplus that ring 4,8 produces even brace ring 4,8; For this reason, sectional mo(u) ld seal ring 5,9 can not be out of shape.In addition; Because sectional mo(u) ld seal ring 5,9 can't help the elastic force of side face side resilient member 18,30 and is braced; So; Even the inner peripheral surface that acts on sectional mo(u) ld seal ring 5,9 by the high occasion of fluid-encapsulated pressure (interior pressure); Or by bracing making by bracing the hypodynamic occasion that braces that ring 4,8 produces in the fastening deficiency of retaining ring 3,7 of ring 4,8, also can absorb by the elastic force of side face side resilient member 18,30 and relax the influence of pressing in this sectional mo(u) ld seal ring 5,9, prevent that effectively the strain of sectional mo(u) ld seal ring 5,9 from taking place.
In addition, sectional mo(u) ld seal ring 5,9 is pushed on retaining ring 3,7 by the state that end face side resilient member (sheet rubber 17 or seal ring 29) is in therebetween.Therefore; Make sectional mo(u) ld seal ring 5,9 superfluous even brace ring 4,8 fastening surpluses in the pushing force of retaining ring 3,7 in retaining ring 3,7; Also absorb the excess quantity of its pushing force by the pooling feature (resiliently deformable) of end face side resilient member 17,29; So sectional mo(u) ld seal ring 5,9 can not be out of shape.In addition; Sectional mo(u) ld seal ring 5,9 by the rebounding force (elastic force) of end face side resilient member 17,29 towards be convenient to bite into the conical surface 4a that braces ring 4,8, the direction of 8a receives pushing (to being pushed, the 2nd seal ring 9 courts are right-hand to being pushed towards left for the 1st seal ring 5).Therefore, cause by bracing the power that the braces deficiency that ring 4,8 produces even brace ring 4, the 8 fastening deficiencies in retaining ring 3,7, sectional mo(u) ld seal ring 5,9 also suitably receives and braces maintenance.In addition; Even maintenance face 3d, 7a in retaining ring 3,7 compare the low occasion of machining accuracy or have produced the occasion of strain with cardinal extremity face 5c, the 9c of sectional mo(u) ld seal ring 5,9; Also absorb its influence, be not applied to sectional mo(u) ld seal ring 5,9 by end face side resilient member 17,29.
Even bracing hypodynamic occasion, acting on the high occasion of interior pressure of sectional mo(u) ld seal ring 5,9 by what brace that ring 4,8 produces like this; Sectional mo(u) ld seal ring 5,9 also remains suitable circular form, and the such problem of existing Sealing that circular- arc quadrant 11,12,21,22 is out of shape and is explained in fronts such as seal face 5a, 9a generation strains can not take place.Therefore,, good sealing function be can give play to, facing-up operation, the break-in operation of that kind of front explanation need do not carried out no matter the constituent material of sectional mo(u) ld seal ring 5,9, air-proof condition how, do not produce strain at seal face 5a, 9a etc.
The invention is not restricted to above-mentioned form of implementation,, can suitably improve, change in the scope that does not break away from basic principle of the present invention.For example, the present invention is also applicable to only with the arbitrary square outer mechanical sealing element that becomes the sectional mo(u)ld seal ring in the 1st and the 2nd seal ring 5,9.
Claims (3)
1. piece together type machinery seal element; At least one side in the 2nd seal ring of the 1st seal ring of seal closure side and rotation shaft side is constituted along the circumferential sectional mo(u)ld seal ring of subdivision, by as the relative rotational slide contact action of the seal face of the end face in opposite directions of two seal rings to as interior all regions of its relative rotational slide contact segment by fluid-encapsulated zone with carry out shield gasket as the non-tight fluid mass in its outer circumferential side zone; It is characterized in that:
Can move or can not movably retaining ring be remained on the seal closure or running shaft that the sectional mo(u)ld seal ring is set along axial direction along axial direction,
The sectional mo(u)ld seal ring fixedly remains on the retaining ring under bracing to circular-arc state by bracing ring, saidly braces that ring is outer to be embedded on the said sectional mo(u)ld seal ring and can securely to be installed on the said retaining ring along the axial direction freedom,
Sectional mo(u)ld seal ring and the side face in opposite directions that braces ring that is embedded in it outward are constituted as the conical surface of the frusto-conical that enlarges gradually along the above-mentioned fastening direction that braces the hoop retaining ring,
On the axial direction of sectional mo(u)ld seal ring and retaining ring in opposite directions between end face; Clamp and have pooling feature and this is carried out the elastic material sheet or the rubber system seal ring as end face side resilient member of secondary seal in opposite directions between end face; And; At the sectional mo(u)ld seal ring and brace in opposite directions between side face of ring; To clamp sheet as the elastic material system of side face side resilient member with pooling feature with the said state that braces the conical surface comprehensive engagement of ring, fastening through bracing the hoop retaining ring, thus through end face side resilient member the pushing of sectional mo(u)ld seal ring is remained in the axial direction end face of retaining ring; And, through side face side resilient member the cooperation of sectional mo(u)ld seal ring is remained in the inner peripheral surface that braces ring.
2. piece together type machinery seal element according to claim 1; It is characterized in that: the 1st seal ring constitutes the sectional mo(u)ld seal ring; The fixing retaining ring of the 1st seal ring that keeps can remain on the seal closure along axial direction movably, and between this retaining ring and seal closure, is clamping the spring component of the 1st seal ring to the 2nd seal ring pushing application of force.
3. piece together type machinery seal element according to claim 1 and 2 is characterized in that: the 2nd seal ring constitutes the sectional mo(u)ld seal ring, and the retaining ring of fixing maintenance the 2nd seal ring is fixed and remains on the running shaft.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006127258 | 2006-05-01 | ||
| JP2006127258A JP4248561B2 (en) | 2006-05-01 | 2006-05-01 | Split type mechanical seal |
| JP2006-127258 | 2006-05-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101067453A CN101067453A (en) | 2007-11-07 |
| CN101067453B true CN101067453B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100887937A Active CN101067453B (en) | 2006-05-01 | 2007-03-22 | Piece together type machinery seal element |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4248561B2 (en) |
| CN (1) | CN101067453B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214350A (en) * | 2014-09-28 | 2014-12-17 | 成都亿密科技有限公司 | Sealing ring, split sealing structure and processing process of sealing ring |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0800509D0 (en) * | 2008-01-11 | 2008-02-20 | Crane John Uk Ltd | Seals |
| US8448950B2 (en) | 2008-05-09 | 2013-05-28 | Eagle Industry Co., Ltd. | Split mechanical seal |
| EP2554880A4 (en) | 2010-03-26 | 2013-07-24 | Eagle Ind Co Ltd | Mechanical sealing device |
| JP5863810B2 (en) * | 2011-09-14 | 2016-02-17 | イーグル工業株式会社 | mechanical seal |
| JP5867824B2 (en) * | 2012-03-26 | 2016-02-24 | 日本ピラー工業株式会社 | Split type mechanical seal |
| JP5912852B2 (en) * | 2012-05-22 | 2016-04-27 | 日本ピラー工業株式会社 | Split type mechanical seal |
| CN102780304A (en) * | 2012-07-27 | 2012-11-14 | 抚顺煤矿电机制造有限责任公司 | Mechanical seal structure |
| US10136927B1 (en) | 2013-03-15 | 2018-11-27 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
| US9486256B1 (en) | 2013-03-15 | 2016-11-08 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
| JP2014234872A (en) * | 2013-06-03 | 2014-12-15 | 日本ピラー工業株式会社 | End surface contact mechanical seal |
| CN103307284B (en) * | 2013-07-10 | 2015-10-21 | 南京林业大学 | There is the Split mechanical seal of self-tightening sealing ability |
| CN103968077B (en) * | 2014-05-19 | 2016-04-13 | 南京林业大学 | A kind of Split type mechanical seal device |
| JP6446295B2 (en) * | 2015-03-09 | 2018-12-26 | 日本ピラー工業株式会社 | Split type mechanical seal |
| DE102016201538B4 (en) * | 2016-02-02 | 2017-08-31 | Eagleburgmann Germany Gmbh & Co. Kg | Mechanical seal assembly of simplified construction |
| JP6742232B2 (en) * | 2016-12-19 | 2020-08-19 | イーグル工業株式会社 | Non-rotating mechanism |
| DE102017012105A1 (en) * | 2017-12-21 | 2019-06-27 | Kaco Gmbh + Co. Kg | Mechanical seal and unit with such a mechanical seal |
| US11051861B2 (en) | 2018-06-13 | 2021-07-06 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
| JP7420687B2 (en) | 2020-09-22 | 2024-01-23 | 日本ピラー工業株式会社 | mechanical seal |
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| CN1085636A (en) * | 1992-09-18 | 1994-04-20 | 约翰起重机有限公司 | A kind of improved mechanical end face seal |
| CN1314978A (en) * | 1999-04-23 | 2001-09-26 | 株式会社丰田自动织机制作所 | Mechanical seal for compressor |
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- 2007-03-22 CN CN2007100887937A patent/CN101067453B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085636A (en) * | 1992-09-18 | 1994-04-20 | 约翰起重机有限公司 | A kind of improved mechanical end face seal |
| CN1314978A (en) * | 1999-04-23 | 2001-09-26 | 株式会社丰田自动织机制作所 | Mechanical seal for compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214350A (en) * | 2014-09-28 | 2014-12-17 | 成都亿密科技有限公司 | Sealing ring, split sealing structure and processing process of sealing ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4248561B2 (en) | 2009-04-02 |
| CN101067453A (en) | 2007-11-07 |
| JP2007298123A (en) | 2007-11-15 |
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