CN213776360U

CN213776360U - Ultra-sealed mechanical sealing device

Info

Publication number: CN213776360U
Application number: CN202022156342.6U
Authority: CN
Inventors: 刘义
Original assignee: Iger Bergman Mechanical Seal Zhangjiagang Co ltd
Current assignee: Iger Bergman Mechanical Seal Zhangjiagang Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-07-23
Anticipated expiration: 2030-09-27

Abstract

The utility model discloses an ultra-sealed mechanical seal device, include: rotating ring, quiet ring, axle and gland, inject the seal clearance between rotating ring and the quiet ring, quiet ring is connected with the gland through fastening screw be provided with first O type sealing washer between quiet ring and the gland be provided with the taper seal groove between one end that the quiet ring was kept away from to the rotating ring and the axle be provided with first taper seal face on the rotating ring inner wall in the taper seal groove be provided with the sealing washer in the taper seal groove, the sealing washer includes: the outer side of the extrusion part is provided with a first axial plane, the inner side of the extrusion part is provided with a conical surface, the conical surface extends to the inner side of the sealing part, and a first radial plane is arranged on one end face, far away from the static ring, of the extrusion part.

Description

Ultra-sealed mechanical sealing device

Technical Field

The utility model relates to a mechanical seal technical field specifically is an ultra-tight mechanical seal device.

Background

The mechanical seal assembly is widely applied to the aerospace industry and the petrochemical industry, and in mechanical seal equipment, a movable ring and a static ring are the most critical pair of parts, the movable ring rotates along with a shaft, and the static ring is connected with a fixed shell. The existing movable ring and the shaft are usually sealed by adopting an O-shaped sealing ring, the axial clearance of the O-shaped sealing ring is large, axial displacement is easily generated between the movable ring and the shaft, the sealing effect is not ideal, and a medium is easily permeated between the driven ring and the shaft, so that the sealing failure condition is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a super sealed mechanical seal device has solved and has adopted O type sealing washer to seal usually between some movable rings that have now and the axle, and O type sealing washer axial clearance is great, produces axial displacement easily between movable ring and axle, and sealed effect is unsatisfactory, and the medium permeates between easy driven ring and the axle to the problem of the condition of sealed inefficacy appears.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an ultra-hermetic mechanical seal, comprising: rotating ring, quiet ring, axle and gland, inject the seal clearance between rotating ring and the quiet ring, quiet ring is connected with the gland through fastening screw be provided with first O type sealing washer between quiet ring and the gland be provided with the taper seal groove between one end that the quiet ring was kept away from to the rotating ring and the axle be provided with first taper seal face on the rotating ring inner wall in the taper seal groove be provided with the sealing washer in the taper seal groove, the sealing washer includes: the sealing device comprises an extrusion part and a sealing part, wherein a first axial plane is arranged on the outer side of the extrusion part, a conical surface is arranged on the inner side of the extrusion part, the conical surface extends to the inner side of the sealing part, a first radial plane is arranged on one end surface of the extrusion part, which is far away from a static ring, a second conical sealing surface matched with the first conical sealing surface is arranged on the outer side of the sealing part, a second axial plane abutted against a shaft is arranged on the inner side of the sealing part, a second radial plane is arranged on one end surface of the sealing part, which is close to the static ring, a first deformable gap is arranged between the conical surface and the shaft, a second deformable gap is arranged between the second radial plane, the dynamic ring and the shaft, a retainer ring is sleeved on the shaft, which is far away from the static ring, one end of the dynamic ring, and a conical sealing groove is extended out of the first radial plane of the extrusion part and abutted against the retainer ring, the retaining ring is kept away from and is provided with the carrier ring through adjusting screw on keeping away from the axle of quiet ring one end, the carrier ring includes: the radial retaining ring comprises a radial retaining ring portion and an axial sleeve portion, wherein the axial sleeve portion extends to the outer side of a moving ring, a cavity is arranged between the radial retaining ring portion and a retaining ring, a plurality of spring grooves are uniformly formed in the radial retaining ring portion along the axial direction, pressure regulating springs matched with the spring grooves are respectively arranged in the spring grooves, one ends of the pressure regulating springs extending into the spring grooves are abutted against the radial retaining ring portion, the other ends of the pressure regulating springs extending out of the spring grooves are abutted against the retaining ring, a plurality of axial sliding grooves are uniformly formed in the outer side of one end, far away from a static ring, of the moving ring along the axial direction, and a plurality of sliding strips matched with the axial sliding grooves are uniformly arranged in the inner side of the axial sleeve portion along the axial direction.

Advantageous effects

The utility model provides a super sealed mechanical seal device. Compared with the prior art, the method has the following beneficial effects: novel structure, adopt between rotating ring and the axle to have the sealing washer of conical surface to seal, the conical seal face of sealing washer sealing portion can cooperate with the inboard conical seal face of rotating ring, the axial plane and the axle of sealing portion support to cooperate, compress tightly the in-process toward quiet ring direction at the sealing washer at the spring, pressure is big more, the conical seal face of sealing portion and the inboard conical seal face cooperation of rotating ring are inseparabler more, the axial plane and the axle cooperation of sealing portion are also inseparabler, can realize super sealed state, it is sealed effectual, prevent effectively that the infiltration from being carried out between medium driven ring and the axle, and simultaneously, there is the deformable clearance between extrusion portion inboard and the axle, sealing portion, also there is the deformable clearance between rotating ring and the axle, be convenient for bear intra-annular spring and exert pressure the sealing washer can suitable deformation space, be unlikely to damage the sealing washer.

Drawings

Fig. 1 is a front view of the structure of the present invention.

Fig. 2 is an enlarged schematic structural view of the sealing ring in fig. 1.

In the figure: 1. moving ring, 2, stationary ring, 3, shaft, 4, gland, 5, seal gap, 6, fastening screw, 7, first O-ring seal, 8, tapered seal groove, 9, first tapered seal surface, 10, seal ring, 101, extrusion, 1011, first axial plane, 1012, tapered surface, 1013, first radial plane, 102, seal, 1021, second tapered seal surface, 1022, second axial plane, 1023, second radial plane, 11, first deformable gap, 111, second deformable gap, 12, retaining ring, 13, adjusting screw, 14, bearing ring, 141, radial retaining ring, 142, axial sleeve, 1421, slide bar, 15, cavity, 16, spring, 17, axial runner.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: an ultra-hermetic mechanical seal, comprising: rotating ring 1, quiet ring 2, axle 3 and gland 4, inject seal clearance 5 between rotating ring 1 and the quiet ring 2, quiet ring 2 is connected with gland 4 through fastening screw 6 be provided with first O type sealing washer 7 between quiet ring 2 and the gland 4 be provided with taper seal groove 8 between one end that the rotating ring 1 kept away from quiet ring 2 and the axle 3 be provided with first taper seal face 9 on the 1 inner wall of rotating ring in the taper seal groove 8 be provided with sealing washer 10 in the taper seal groove 8, sealing washer 10 includes: the sealing device comprises a pressing part 101 and a sealing part 102, wherein a first axial plane 1011 is arranged on the outer side of the pressing part 101, a conical surface 1012 is arranged on the inner side of the pressing part 101, the conical surface 1012 extends to the inner side of the sealing part 102, a first radial plane 1013 is arranged on one end surface of the pressing part 101 far away from a static ring 2, a second conical sealing surface 1021 matched with the first conical sealing surface 9 is arranged on the outer side of the sealing part 102, a second axial plane 1022 abutted against a shaft 3 is arranged on the inner side of the sealing part 102, a second radial plane 1023 is arranged on one end surface of the sealing part 102 near the static ring 2, a first deformable gap 11 is arranged between the conical surface 1012 and the shaft 3, a second deformable gap 111 is arranged between the second radial plane 1023, a movable ring 1 and the shaft 3, a retaining ring 12 is sleeved on the shaft 3 far away from one end of the static ring 2 of the movable ring 1, the first radial plane 1013 of the extrusion 101 extends out of the conical sealing groove 8 to abut against a retainer ring 12, a bearing ring 14 is disposed on the shaft 3 at an end of the retainer ring 12 far away from the stationary ring 2 by an adjusting screw 13, and the bearing ring 14 includes: the radial retaining ring comprises a radial retaining ring portion 141 and an axial sleeve portion 142, the axial sleeve portion 142 extends to the outer side of the moving ring 1, a cavity 15 is arranged between the radial retaining ring portion 141 and the retaining ring 12, a plurality of spring grooves 1411 are uniformly arranged in the radial retaining ring portion 141 along the axial direction, pressure regulating springs 16 matched with the spring grooves 1411 are respectively arranged in the spring grooves 1411, one ends of the pressure regulating springs 16 extending into the spring grooves 1411 are abutted against the radial retaining ring portion 141, the other ends of the pressure regulating springs 16 extending out of the spring grooves 1411 are abutted against the retaining ring 12, a plurality of axial sliding grooves 17 are uniformly arranged in the axial direction on the outer side of one end, far away from the stationary ring 2, of the moving ring 1, and a plurality of sliding strips 1421 matched with the axial sliding grooves 17 are uniformly arranged in the axial direction on the inner side of the axial sleeve portion 142.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An ultra-hermetic mechanical seal, comprising: rotating ring (1), quiet ring (2), axle (3) and gland (4), inject sealed clearance (5) between rotating ring (1) and quiet ring (2), quiet ring (2) are connected with gland (4) through fastening screw (6) be provided with first O type sealing washer (7), its characterized in that between quiet ring (2) and gland (4): be provided with toper seal groove (8) between the one end of quiet ring (2) is kept away from in rotating ring (1) and axle (3) be provided with first toper seal face (9) on rotating ring (1) inner wall in toper seal groove (8) be provided with sealing washer (10) in toper seal groove (8), sealing washer (10) include: the sealing device comprises a pressing part (101) and a sealing part (102), wherein a first axial plane (1011) is arranged on the outer side of the pressing part (101), a conical surface (1012) is arranged on the inner side of the pressing part (101), the conical surface (1012) extends to the inner side of the sealing part (102), a first radial plane (1013) is arranged on one end face, far away from a static ring (2), of the pressing part (101), a second conical sealing surface (1021) matched with a first conical sealing surface (9) is arranged on the outer side of the sealing part (102), a second axial plane (1022) abutted against a shaft (3) is arranged on the inner side of the sealing part (102), a second radial plane (1023) is arranged on one end face, close to the static ring (2), of the sealing part (102), a first deformable gap (11) is arranged between the conical surface (1012) and the shaft (3), and a second deformable plane (1023), Be provided with second deformable clearance (111) between rotating ring (1) and axle (3) rotating ring (1) is kept away from axle (3) of quiet ring (2) one end and is equipped with retaining ring (12) on the cover, the first radial plane (1013) of extrusion portion (101) stretch out toper seal groove (8) and offset with retaining ring (12) keep away from and are provided with through adjusting screw (13) on axle (3) of keeping away from quiet ring (2) one end and bear ring (14), bear ring (14) and include: a radial collar portion (141) and an axial sleeve portion (142), the axial sleeve portion (142) extending to the outside of the rotating ring (1), a cavity (15) is arranged between the radial retainer ring part (141) and the retainer ring (12), a plurality of spring grooves (1411) are uniformly arranged in the radial retaining ring part (141) along the axial direction, pressure regulating springs (16) which are matched with the spring grooves (1411) are respectively arranged in the spring grooves (1411), one end of the pressure regulating spring (16) extending into the spring groove (1411) is propped against the radial retaining ring part (141), the other end of the pressure regulating spring (16) extending out of the spring groove (1411) is propped against the retainer ring (12), a plurality of axial sliding grooves (17) are uniformly arranged on the outer side of one end of the movable ring (1) far away from the static ring (2) along the axial direction, and a plurality of sliding strips (1421) matched with the axial sliding grooves (17) are uniformly arranged on the inner side of the axial sleeve part (142) along the axial direction.