WO2018012330A1 - Joint mécanique - Google Patents

Joint mécanique Download PDF

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Publication number
WO2018012330A1
WO2018012330A1 PCT/JP2017/024281 JP2017024281W WO2018012330A1 WO 2018012330 A1 WO2018012330 A1 WO 2018012330A1 JP 2017024281 W JP2017024281 W JP 2017024281W WO 2018012330 A1 WO2018012330 A1 WO 2018012330A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
peripheral surface
ring
outer peripheral
mechanical seal
Prior art date
Application number
PCT/JP2017/024281
Other languages
English (en)
Japanese (ja)
Inventor
公裕 谷
Original Assignee
イーグル工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by イーグル工業株式会社 filed Critical イーグル工業株式会社
Priority to JP2017546918A priority Critical patent/JP6823600B2/ja
Publication of WO2018012330A1 publication Critical patent/WO2018012330A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
    • F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
    • F16B2/08—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action using bands
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member

Definitions

  • the present invention is a mechanical seal that is mounted on a shaft seal formed between a housing and a rotary shaft, and seals the shaft seal by sliding a housing-side stationary ring and a rotary shaft-side rotary ring. About.
  • a sleeve is fitted on and fixed to the outer peripheral surface of the rotating shaft, and a rotating ring provided on the sleeve is provided with a rotating ring provided on the rotating shaft and a fixed ring fixed to the housing.
  • the shaft seal portion formed between the housing and the rotating shaft is sealed by sliding.
  • the sleeve is fixed to the rotating shaft. More specifically, a stopper ring is fitted around one end of the sleeve inserted in the rotating shaft in the axial direction, and a first set screw screwed in the stopper ring in the radial direction is attached to the outer periphery of the sleeve.
  • the stopper ring is fixed to the sleeve by pressing and tightening to the surface, and the second set screw, which is screwed into the stopper ring in the radial direction, is pressed and tightened to the outer peripheral surface of the rotating shaft through the sleeve setting hole. Is fixed to the rotating shaft (for example, see Patent Document 1).
  • Patent Document 1 the first set screw screwed at one end in the axial direction of the sleeve is pressed at a predetermined position in the circumferential direction of the rotating shaft, thereby fixing the sleeve to the rotating shaft. Therefore, as a result of the sleeve being locally pressed in the circumferential direction of the rotating shaft, the axial centers of the sleeve and the rotating shaft do not coincide with each other, and the sliding torque between the rotating ring and the stationary ring provided on this sleeve is reduced. There exists a problem that it may affect and there exists a possibility that a high sealing performance cannot be maintained.
  • An object of the present invention is to provide a mechanical seal capable of maintaining high sealing performance.
  • the mechanical seal of the present invention is A mechanical seal that is attached to a shaft seal formed between a housing and a rotary shaft and seals the shaft seal by sliding the stationary ring on the housing side and the rotary ring on the rotary shaft. And A sleeve inserted into the outer peripheral surface of the rotary shaft and rotating with the rotary shaft is provided, and a fastening member is provided on the outer diameter side of the sleeve to fasten the sleeve with respect to the rotary shaft in the circumferential direction. It is characterized by being.
  • the tightening member tightens the outer peripheral surface of the sleeve in the circumferential direction, the sleeve is pressed substantially uniformly over the entire circumference without being locally pressed against the rotating shaft.
  • the axial centers of the sleeve and the rotating shaft can be made coincident, and high sealing performance can be maintained without affecting the sliding torque of the mechanical seal.
  • a slit extending in the axial direction is formed in a peripheral wall of the sleeve on which the tightening member is provided. According to this feature, since the slit extending in the axial direction is formed in the peripheral wall of the sleeve, the sleeve is easily reduced in diameter in the inner diameter direction by tightening the fastening member, and is firmly fixed to the rotating shaft.
  • a protruding portion that protrudes toward the inner diameter side and engages with the slit is provided on the inner peripheral surface of the tightening member.
  • the slit is open at the tip of the sleeve in the axial direction, and a plurality of slits are formed in the circumferential direction of the sleeve. According to this feature, since the tip of the sleeve in the axial direction functions as a free end, it is possible to increase the degree of freedom with which the diameter of the sleeve is reduced as the fastening member is tightened.
  • the slit is characterized in that it is formed wider in the axial direction than the tightening member. According to this feature, since the sleeve in which the wide slit is formed is uniformly reduced in diameter over the entire width of the tightening member, it is possible to avoid the possibility that the tightening member is detached in the axial direction.
  • a male screw portion is provided on the outer peripheral surface of the case that is externally fitted to the sleeve and to which the fixed ring is attached, and a female screw portion that is screwed to the screw portion is provided on the inner peripheral surface of the housing.
  • the case can be attached to the housing simply by screwing the male screw portion of the case fitted on the sleeve with the female screw portion of the housing, so that the number of mechanical seal attachment parts can be reduced.
  • the mechanical seal can be attached with a uniform holding force in the circumferential direction.
  • FIG. 1 It is front sectional drawing which shows the structure of the mechanical seal in an Example. It is front sectional drawing which shows the structure of a sleeve.
  • A is the side view and principal part enlarged view which show the structure of a hose band
  • (b) is a front view which shows a hose band. It is a fragmentary sectional view which shows the fixation structure of the sleeve with respect to a rotating shaft.
  • (A), (b) is front sectional drawing which shows the modification of a sleeve.
  • FIG. 1 The mechanical seal according to the embodiment will be described with reference to FIGS.
  • the left side of FIG. 1 is the inside of the mechanical seal and the right side of FIG. 1 is the outside of the mechanical seal (atmosphere side).
  • a mechanical seal 1 As shown in FIG. 1, a mechanical seal 1 according to this embodiment is used in a shaft seal field such as an automobile or a general industrial machine, and is rotated through a housing 2 and a shaft hole 20 provided in the housing 2. It is attached to seal between the shaft 3 (shaft seal).
  • the rotating shaft 3 is generally made of a metal such as stainless steel, and when the shaft sealing device is a pump, an impeller (not shown) is attached to the inside of the machine.
  • the mechanical seal 1 is mainly composed of a case 4, a fixed ring 6, a sleeve 5, a collar plate 7, a spring 8, and a rotary ring 9, and is integrated with a set plate 13 before use.
  • the cartridge type is configured. As will be described later, the mechanical seal 1 is used with the set plate 13 removed from the sleeve 5.
  • the housing 2 has a shape in which the inner periphery inside the machine is wider than the shaft hole 20. Thereby, the impeller which is not shown attached to the machine inner side of the rotating shaft 3 has secured the space which rotates inside the housing 2 (machine interior).
  • the shaft hole 20 provided in the housing 2 is formed with a female screw portion 21 on the inner peripheral surface on the inner side of the machine.
  • the case 4 is provided with a shaft hole 40 through which the sleeve 5 is inserted, and has an annular shape. Further, the case 4 has a male screw portion 41 formed on the outer peripheral surface inside the machine. According to this, the case 4 can be fixed to the housing 2 by screwing the male screw portion 41 of the case 4 into the female screw portion 21 of the housing 2 described above. Therefore, the case 4 can be easily fixed to the housing 2 without separately using fixing means such as bolts, and the mechanical seal 1 can be attached to the housing 2 with a uniform holding force in the circumferential direction.
  • the case 4 is formed with a flange 42 that extends to the outer periphery on the outside of the machine. According to this, when the case 4 is fixed to the housing 2, the end surface 45 on the machine inner side of the flange 42 of the case 4 can be brought into contact with the end surface 22 on the machine outer side of the housing 2. Due to this contact, when the case 4 is fixed to the housing 2, the case 4 and the housing 2 are aligned, so that excessive force does not act on the female screw portion 21 and the male screw portion 41, and the female screw portion 21. In addition, deformation and breakage of the male screw portion 41 can be prevented.
  • annular groove 43 is formed on the outer peripheral surface inside the machine from the flange 42, and an O-ring 101 is attached to the annular groove 43.
  • the O-ring 101 can be pressure-bonded to the inner peripheral surface of the housing 2 on the machine inner side. Therefore, the gap between the inner peripheral surface of the housing 2 and the outer peripheral surface of the case 4 can be sealed by the O-ring 101.
  • the annular groove 43 is disposed so as to face the inner peripheral surface of the housing 2, the diameter of the flange 42 can be shortened to make the case 4 smaller and lighter. Furthermore, since the case 4 is fixed to the housing 2 by the male screw portion 41 provided on the outer periphery thereof, the diameter dimension of the flange 42 can be shortened.
  • a fixed ring 6 is fixed to the inner periphery of the inside of the machine via an O-ring 102.
  • the fixed ring 6 is provided with a shaft hole 60 through which the sleeve 5 is inserted to form an annular shape.
  • the fixed ring 6 is formed with a flange 61 extending to the outer periphery inside the machine.
  • the fixed ring 6 is provided with an O-ring 102 on the outer periphery of the reduced diameter portion outside the machine from the flange 61. According to this, when fixing the stationary ring 6 to the case 4, the O-ring 102 can be pressure-bonded to the inner peripheral surface of the case 4 on the machine inner side. Therefore, the gap between the inner peripheral surface of the case 4 and the outer peripheral surface of the stationary ring 6 can be sealed by the O-ring 102.
  • the stationary ring 6 is manufactured from SiC by a special conversion method (particulate the carbon surface into SiC, reinforce the surface strength, and combine both the wear resistance of SiC and the self-lubricating property of carbon). Has been. It may also be made of diamond-coated SiC.
  • the sleeve 5 is provided with a shaft hole 50 through which the rotary shaft 3 is inserted, and has a tubular shape.
  • An annular groove 57 is formed on the inner peripheral surface of the shaft hole 50 provided in the sleeve 5 on the inside of the machine.
  • An O-ring 103 is attached to the annular groove 57. According to this, when the rotary shaft 3 is inserted into the shaft hole 50 of the sleeve 5, the O-ring 103 can be pressure-bonded to the outer peripheral surface of the rotary shaft 3. Therefore, the gap between the inner peripheral surface of the sleeve 5 and the outer peripheral surface of the rotary shaft 3 can be sealed by the O-ring 103. In addition, the friction force generated between the O-ring 103 and the rotating shaft 3 is used to make it difficult for the sleeve 5 to move relative to the rotating shaft 3 in the axial direction and the circumferential direction.
  • the sleeve 5 is generally made of a metal such as stainless steel, and rotates together with the rotating shaft 3 by being fixed to the rotating shaft 3.
  • the fixing structure of the rotating shaft 3 and the sleeve 5 will be described in detail later.
  • the sleeve 5 has an outer peripheral surface that is gradually reduced in diameter from the inside of the machine toward the outside of the machine.
  • An outer peripheral surface 54 is formed.
  • an annular step 55 is formed at the boundary between the first outer peripheral surface 51 and the second outer peripheral surface 52, and the second outer peripheral surface 52 and the third outer peripheral surface 53
  • An annular step portion 56 is formed at the boundary portion.
  • An annular groove 51 a is formed on the first outer peripheral surface 51 of the sleeve 5 on the inner side of the machine.
  • the collar plate 7 is mounted in the annular groove 51a.
  • the color plate 7 is fixed so as not to move relative to the sleeve 5 in the axial direction and the circumferential direction.
  • a spring 8 is disposed between the color plate 7 and the rotary ring 9 in a compressed state.
  • the spring 8 is arranged in a type that uses one spring larger than the shaft diameter of the sleeve 5, that is, a one-coil spring type.
  • the spring 8 may be a wave coil spring or the like in addition to the coil spring.
  • a guide member 10 is mounted on the second outer peripheral surface 52 of the sleeve 5 on the inner side.
  • the guide member 10 is fixed to the second outer peripheral surface 52 of the sleeve 5 so as not to rotate in the circumferential direction by welding.
  • the guide member 10 may be assembled to the sleeve 5 by means other than welding.
  • a claw extending in the axial direction may be provided on the guide member, and the claw may be inserted into a recess provided in the sleeve.
  • the guide member 10 includes a ring-shaped attachment portion 10a and a plurality of L-shaped guide pieces 11, 11,... Provided in the circumferential direction from the attachment portion 10a.
  • the attachment portion 10 a of the guide member 10 has substantially the same diameter as the outer periphery of the second outer peripheral surface 52. According to this, when the guide member 10 is mounted on the second outer peripheral surface 52, the guide member 10 moves to the machine inner side (first outer peripheral surface 51 side) of the sleeve 5 by contacting the annular step 55 described above. Is regulated. Therefore, the guide member 10 is easily fixed at a desired mounting position on the outer peripheral surface of the sleeve 5.
  • the fixing method of the guide member 10 with respect to the 2nd outer peripheral surface 52 of the sleeve 5 is not restricted to welding, You may fix using uneven
  • the guide pieces 11, 11,... Of the guide member 10 are respectively inserted into a plurality of guide recesses 91, 91,... Formed on the inner peripheral surface of the rotary ring 9 on the machine inner side. .. Are formed so as to extend in the axial direction and open to the inside of the machine. According to this, the guide pieces 11, 11,... Are inserted into the guide recesses 91, 91,... To move the rotary ring 9 relative to the sleeve 5 only in the axial direction. Is locked so as not to move relative to the sleeve 5 in the circumferential direction. Therefore, the rotational force of the sleeve 5 is transmitted to the rotating ring 9 by the guide pieces 11, 11,.
  • the rotary ring 9 is provided with a shaft hole 90 through which the sleeve 5 is inserted, and has an annular shape. Further, the rotary ring 9 rotates together with the sleeve 5 in a state in which the side end surface on the outer side of the machine is in contact with the side end surface on the inner side of the fixed ring 6.
  • the sliding surface S is formed when the side end surface of the rotating ring 9 and the side end surface of the fixed ring 6 abut. Further, the side end surface of the rotating ring 9 is urged toward the outside of the machine when an axial urging force is applied from the spring 8, and is in close contact with the side end surface of the stationary ring 6. According to this, the followability of the side end face of the rotating ring 9 with respect to the side end face of the fixed ring 6 can be enhanced. Therefore, the sealing performance on the sliding surface S of the mechanical seal 1 can be enhanced.
  • the rotary ring 9 is provided with an O-ring 104 on the inner peripheral surface inside the machine. According to this, when inserting the rotary ring 9 into the sleeve 5, the O-ring 104 can be pressure-bonded to the second outer peripheral surface 52 of the sleeve 5. Therefore, the gap between the inner peripheral surface of the rotating ring 9 and the second outer peripheral surface 52 of the sleeve 5 can be sealed by the O-ring 104.
  • the holding plate 12 is attached to the rotary ring 9 by press-fitting or the like on the inner peripheral surface of the machine inner side than the position where the O-ring 104 is mounted.
  • the holding plate 12 regulates the movement of the O-ring 104 attached to the inner peripheral surface of the rotating ring 9 toward the inside of the machine.
  • the rotary ring 9 is provided with an annular convex portion 92 extending on the inner diameter side on the inner peripheral surface on the outer side of the machine. According to this, the diameter of the shaft hole 90 on the machine outside where the side end surface of the rotary ring 9 described above is formed can be reduced, and the position of the sliding surface S can be brought closer to the inner diameter side. Therefore, the load applied to the sliding surface S when the mechanical seal 1 is used can be reduced.
  • the annular convex portion 92 can be brought into contact with the annular step portion 56. Therefore, it is possible to easily align the rotary ring 9 with the sleeve 5 in the axial direction.
  • the rotating ring 9 is manufactured from SiC by a special conversion method (partially converting the carbon surface to SiC, reinforcing the surface strength, and combining both the wear resistance of SiC and the self-lubricating property of carbon). Has been. It may also be made of diamond-coated SiC.
  • annular groove 53a is formed outside the machine.
  • a C-ring set plate 13 is mounted in the annular groove 53a.
  • the set plate 13 can be brought into contact with an annular recess 44 formed on the outer periphery of the shaft hole 40 of the case 4 inserted through the sleeve 5 by being mounted in the annular groove 53a.
  • each member inserted through the sleeve 5 can be integrally held between the inner color plate 7 and the outer set plate 13 using the biasing force of the spring 8. Therefore, the mechanical seal 1 can be configured as a cartridge type.
  • the cartridge type mechanical seal 1 is inserted from the inside of the machine (on the color plate 7 side) into the shaft hole 20 of the housing 2 from the outside of the machine, and the male screw part 41 of the case 4 is inserted into the female screw part 21 of the housing 2. By being screwed into the housing 2, it can be easily fixed to the housing 2.
  • the set plate 13 is removed from the sleeve 5 after fixing the case 4 to the housing 2.
  • the fourth outer peripheral surface 54 of the sleeve 5 is formed with slits 58, 58, 58, 58 extending in the axial direction from the end portion on the outside of the machine.
  • the slits 58, 58, 58, 58 are equally arranged every 90 degrees with respect to the circumferential direction of the sleeve 5.
  • leg portions 59 that substantially constitute the fourth outer peripheral surface 54 of the sleeve 5 are formed between the slits 58 adjacent to each other in the circumferential direction.
  • the slits 58, 58, 58, 58 extend from the end of the third outer peripheral surface 53 to the inside of the predetermined size machine. That is, the axial dimension L2 of the slits 58, 58, 58, 58 is longer than the axial dimension L1 of the fourth outer peripheral surface 54.
  • the cross section of the sleeve 5 shown in FIGS. 1, 2 and 5 is not a cross section obtained by cutting the sleeve 5 by one plane, but is shown by, for example, an imaginary line AA ′ in FIG.
  • the sleeve 5 is illustrated as a cross-sectional view cut along two planes orthogonal to each other at the axis. Therefore, in FIG. 1, FIG. 2 and FIG. 5, only the slit 58 on the right side of FIG. 4 among the slits 58, 58, 58, 58 equally distributed every 90 degrees with respect to the circumferential direction of the sleeve 5 is provided. It is shown.
  • the hose band 14 (clamping member) is formed on the fourth outer peripheral surface 54 of the sleeve 5 in a state where the rotary shaft 3 is inserted into the shaft hole 50 provided in the sleeve 5. Installed.
  • the hose band 14 includes a band portion 15 having a width substantially the same as the axial dimension L1 of the fourth outer peripheral surface 54 of the sleeve 5, and one of the band portions 15. It is mainly composed of a holding case 16 to which the end is fixed, and a tightening bolt 17 provided on the holding case 16. Further, the hose band 14 deforms the band portion 15 into a ring shape, and tightens or loosens the tightening bolt 17 in a state where the free end portion (the other end portion) of the band portion 15 is passed through the holding case 16. Thus, the tightening force of the band portion 15 can be adjusted.
  • the band portion 15 is made of metal or resin, and has a plurality of through holes 19, 19,... Extending in the width direction (see FIG. 3B). Further, a plurality of convex portions 18, 18,... Projecting toward the inner diameter side are formed on the inner peripheral surface of the band portion 15 (see an enlarged view of FIG. 3A).
  • the hose band 14 is attached to the fourth outer peripheral surface 54 of the sleeve 5 with the rotary shaft 3 inserted through the shaft hole 50 provided in the sleeve 5, and then tightened.
  • the sleeve 5 can be fixed to the rotating shaft 3 by tightening the rotating shaft 3 and the fourth outer peripheral surface 54 of the sleeve 5 with the band portion 15.
  • the hose band 14 is attached to the fourth outer peripheral surface 54, and the end portion on the machine inner side of the band portion 15 is formed at the boundary portion between the third outer peripheral surface 53 and the fourth outer peripheral surface 54.
  • the portion 53b By contacting the portion 53b, the movement of the sleeve 5 toward the machine inner side (the third outer peripheral surface 53 side) is restricted. Therefore, the hose band 14 can be easily fixed at a desired attachment position on the outer peripheral surface of the sleeve 5.
  • the plurality of convex portions 18, 18,... Formed on the inner peripheral surface of the band portion 15 are hooked on the peripheral portions 58 a of the slits 58 that are equally arranged on the sleeve 5 every 90 degrees. According to this, the hose band 14 can be locked so as not to move relative to the sleeve 5 in the circumferential direction, and the tightening force of the hose band 14 (band portion 15) can be maintained.
  • the mechanical seal 1 has the hose band from the circumferential direction with respect to the fourth outer peripheral surface 54 of the sleeve 5 in a state where the rotary shaft 3 is inserted into the shaft hole 50 provided in the sleeve 5.
  • the sleeve 5 can be stably fixed to the rotary shaft 3 by tightening with the 14 band portions 15. And since the sleeve 5 is pressed substantially uniformly over the entire circumference without being locally pressed against the rotating shaft 3, the sleeve 5 and the rotating shaft 3 can be aligned with each other. Therefore, high sealing performance can be maintained without affecting the sliding torque of the mechanical seal 1.
  • the band portion 15 is further reduced in diameter in a state where the convex portion 18 is hooked on the peripheral portion 58a of the slit 58, whereby the leg portion 59 of the sleeve 5 moves slightly in the circumferential direction.
  • the leg portion 59 of the sleeve 5 is slightly inclined with respect to the rotation shaft 3. Therefore, it is difficult for the hose band 14 to move relative to the sleeve 5 in the axial direction.
  • the leg portion 59 of the sleeve 5 is slightly reduced in diameter in the radial direction.
  • the axial dimension L2 of the slits 58, 58, 58, 58 of the sleeve 5 is longer than the axial dimension L1 of the fourth outer peripheral surface 54 of the sleeve 5 fixed by the band portion 15 of the hose band 14. It has become.
  • the leg portion 59 of the sleeve 5 is reduced in diameter substantially uniformly in the axial direction, in other words, the leg portion 59 of the sleeve 5 is axially reduced.
  • the diameter is not reduced by being inclined over the range. Therefore, the hose band 14 can be hardly detached from the sleeve 5 in the axial direction.
  • the fourth outer peripheral surface 54 of the sleeve 5 has the smallest thickness compared to the first outer peripheral surface 51, the second outer peripheral surface 52, and the third outer peripheral surface 53. Further, slits 58, 58, 58, 58 are formed in the fourth outer peripheral surface 54 of the sleeve 5. According to this, it becomes easy to reduce the diameter of the fourth outer peripheral surface 54 of the sleeve 5 in the inner diameter direction. Therefore, when the fourth outer peripheral surface 54 of the sleeve 5 is tightened by the band portion 15 of the hose band 14, the inner peripheral surface of the sleeve 5 can be easily brought into contact with the outer peripheral surface of the rotary shaft 3. 3 can be fixed more firmly.
  • the slits 58, 58, 58, 58 are open to the outside of the sleeve 5 in the axial direction, and a plurality of slits 58, 58, 58, 58 are formed in the circumferential direction of the sleeve 5. According to this, since the front end of the leg portions 59, 59, 59, 59 of the sleeve 5 functions as a free end, it is possible to increase the degree of freedom in which the sleeve 5 is reduced in diameter as the hose band 14 is tightened. .
  • the sleeve 50 is formed with a fifth outer peripheral portion 54 a protruding outward from the fourth outer peripheral surface 54 toward the outer diameter side. According to this, the hose band 14 attached to the fourth outer peripheral surface 54 of the sleeve 50 is restricted from moving in the axial direction by the fifth outer peripheral portion 54a. Therefore, the fixed state of the rotating shaft 3 and the sleeve 50 can be maintained.
  • the fifth outer peripheral portion may be omitted on the outer side of the sleeve 501.
  • the sleeve 501 can be easily manufactured.
  • slits 512, 512, 512 and 512 are formed in the sleeve 502 in the shape of a long hole extending in the axial direction, and the outer periphery of the machine 502 is closed. According to this, the convex portions 18, 18,...
  • the material of the O-rings 101, 102, 103, 104 in the above embodiment is fluorine rubber, nitrile rubber, H-NBR, EPDM, perfluoroelastomer or the like.
  • the material of the stationary ring 6 and the rotating ring 9 may be an ultra-hard material such as silicon carbide, tungsten carbide, carbon, and other ceramics.
  • the slits 58, 58, 58, 58 are described as being equally arranged every 90 degrees at the end of the sleeve 5 outside the machine.
  • the present invention is not limited to this.
  • the interval or the like may be freely configured.
  • the slit 58 was demonstrated as an aspect formed in a substantially rectangular shape, it is not restricted to this,
  • the shape of a slit is the uneven
  • the shape and the formation method of the convex portions 18, 18,... May be freely configured as long as they are hooked by the slit 58.
  • a burr formed on the inner peripheral surface of the band portion 15 may be used as the convex portion 18.
  • the convex portion 18 may be disposed only at a position that matches the position of the slit 58.
  • the tip 15a of the band portion 15 may be hooked on the slit 58 as the convex portion 18 (see FIG. 3A).
  • the axial dimension of the slit is formed at a position where the convex portion formed on the inner peripheral surface of the band portion of the hose band is hooked when the rotating shaft and the sleeve are fixed by the hose band, for example,
  • the same dimension as the axial dimension of the fourth outer peripheral surface 54 may be used, or it may be smaller than the axial dimension of the fourth outer peripheral surface 54.
  • band-shaped member has been described as an example of the tightening member, the shape is not limited and may be linear.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)

Abstract

L'invention concerne un joint mécanique comportant un manchon fixé de manière précise à un arbre rotatif, ce qui permet de stabiliser de manière uniforme le couple de glissement entre une bague fixe et une bague rotative disposée sur une bride du manchon et de maintenir des efficacités d'étanchéité élevées. Le joint mécanique (1), fixé à une partie de joint d'arbre formée entre une enveloppe (2) et un arbre rotatif (3) et destiné à fermer hermétiquement la partie de joint d'arbre en amenant une bague fixe (6) sur le côté de l'enveloppe (2) et une bague rotative (9) sur le côté de l'arbre rotatif (3) à coulisser l'une par rapport à l'autre, est muni d'un manchon (5) monté sur la face circonférentielle externe de l'arbre rotatif (3) et tournant conjointement avec l'arbre rotatif (3). Un élément de fixation (14), destiné à fixer le manchon (5) à l'arbre rotatif (3) dans la direction circonférentielle, est disposé sur un côté du diamètre externe du manchon (5).
PCT/JP2017/024281 2016-07-13 2017-07-03 Joint mécanique WO2018012330A1 (fr)

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Application Number Priority Date Filing Date Title
JP2017546918A JP6823600B2 (ja) 2016-07-13 2017-07-03 メカニカルシール

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-138855 2016-07-13
JP2016138855 2016-07-13

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WO2018012330A1 true WO2018012330A1 (fr) 2018-01-18

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WO (1) WO2018012330A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019168072A (ja) * 2018-03-26 2019-10-03 イーグル工業株式会社 メカニカルシール
JP2020056412A (ja) * 2018-09-28 2020-04-09 イーグル工業株式会社 メカニカルシール
JPWO2019146756A1 (ja) * 2018-01-29 2021-01-28 三井化学株式会社 二液硬化型無溶剤系接着剤およびラミネートフィルム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0317409U (fr) * 1989-07-04 1991-02-21
JP2009250432A (ja) * 2008-04-11 2009-10-29 Nippon Pillar Packing Co Ltd メカニカルシール及びメカニカルシール装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0317409U (fr) * 1989-07-04 1991-02-21
JP2009250432A (ja) * 2008-04-11 2009-10-29 Nippon Pillar Packing Co Ltd メカニカルシール及びメカニカルシール装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2019146756A1 (ja) * 2018-01-29 2021-01-28 三井化学株式会社 二液硬化型無溶剤系接着剤およびラミネートフィルム
JP7030139B2 (ja) 2018-01-29 2022-03-04 三井化学株式会社 二液硬化型無溶剤系接着剤およびラミネートフィルム
JP2019168072A (ja) * 2018-03-26 2019-10-03 イーグル工業株式会社 メカニカルシール
JP7080556B2 (ja) 2018-03-26 2022-06-06 イーグル工業株式会社 メカニカルシール
JP2020056412A (ja) * 2018-09-28 2020-04-09 イーグル工業株式会社 メカニカルシール
JP7111574B2 (ja) 2018-09-28 2022-08-02 イーグル工業株式会社 メカニカルシール

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