CN213776361U - Machine seals multi-functional seal assembly - Google Patents

Abstract

The utility model discloses a machine seals multi-functional seal assembly, include: the movable ring is connected with the gland through a fastening screw, a first O-shaped sealing ring is arranged between the stationary ring and the gland, a sealing groove is formed in the inner side of one end, far away from the stationary ring, of the movable ring, a second O-shaped sealing ring is arranged in the sealing groove, an elastic secondary sealing check ring is arranged in the sealing groove, close to one side of the stationary ring, of the second O-shaped sealing ring, a plurality of first spring grooves are evenly formed in the movable ring, close to one side of the stationary ring, of the elastic secondary sealing check ring along the axial direction, first springs matched with the first spring grooves are respectively arranged in the first spring grooves, one end of each first spring is abutted against the movable ring, and the other end of each first spring is abutted against the elastic secondary sealing check ring.

Description

Machine seals multi-functional seal assembly

Technical Field

The utility model relates to a mechanical seal technical field specifically is a machine seals multi-functional seal assembly.

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 moving ring and shaft are usually sealed by a single O-shaped sealing ring, the sealing effect is poor, and a medium is easy to permeate between the moving ring and the shaft, so that the sealing effect is not ideal, even the sealing is failed, and simultaneously, in the using process, the movable ring is usually extruded to be attached to the static ring by a spring, one end of the spring is fixed on the rotating shaft by a positioning screw, the other end of the spring is abutted against the movable ring, because the spring is positioned by the positioning screw and is fixed in position, the pressure between the movable ring and the spring can not be adjusted, the use is inconvenient, meanwhile, the carbon graphite ring is usually embedded in the fixed sleeve by interference fit to form a complete movable ring at present, the carbon graphite ring can produce great radial load to the fixed cover in operation process, if not in time share these radial load can make carbon graphite ring and fixed cover take place the risk of components of a whole that can function independently.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a machine seal multifunctional seal assembly, which solves the problems that the prior movable ring and the shaft are generally radially sealed by a single O-shaped seal ring, the sealing effect is poor, a medium is easy to permeate from the movable ring to the shaft, so the sealing effect is not ideal, even the sealing is invalid, simultaneously, the movable ring is generally extruded by a spring to be attached to a stationary ring in the use process, one end of the spring is fixed on a rotating shaft by a positioning screw, the other end of the spring is abutted against the movable ring, because the spring is positioned by the positioning screw, the position is fixed, the pressure between the movable ring and the spring can not be adjusted, the use is inconvenient, meanwhile, the carbon graphite ring is generally embedded in a fixed sleeve by interference fit to form a complete movable ring, and can generate larger radial load to the fixed sleeve in the operation process, the carbon graphite ring and the fixed sleeve are separated if the radial load is not timely shared.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a mechanically sealed multi-function seal assembly comprising: the sealing structure comprises a movable ring, a stationary ring, a shaft and a gland, wherein a sealing gap is limited between the movable ring and the stationary ring, the stationary ring is connected with the gland through a fastening screw, a first O-shaped sealing ring is arranged between the stationary ring and the gland, a sealing groove is arranged at the inner side of one end of the movable ring, which is far away from the stationary ring, a second O-shaped sealing ring is arranged in the sealing groove, an elastic secondary sealing check ring is arranged in the sealing groove at one side of the second O-shaped sealing ring, which is close to the stationary ring, a plurality of first spring grooves are uniformly arranged in the movable ring at one side of the elastic secondary sealing check ring, which is close to the stationary ring, along the axial direction, first springs which are matched with the first spring grooves are respectively arranged in the first spring grooves, one end of each first spring is abutted against the movable ring, the other end of each first spring is abutted against the elastic secondary sealing check ring, the retaining ring 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 part and the axial sleeve part extend to the outer side of the movable ring, a cavity is arranged between the radial retaining ring part and the retaining ring, a plurality of second spring grooves are uniformly arranged in the radial retaining ring part along the axial direction, second springs matched with the second spring grooves are respectively arranged in the second spring grooves, one end of each second spring extending into the second spring groove is abutted against the radial retaining ring part, the other end of each second spring extending out of the second spring groove is abutted against the retaining ring, a plurality of axial sliding grooves are uniformly arranged on the outer side of one end of the movable ring far away from the stationary ring along the axial direction, a plurality of sliding strips matched with the axial sliding grooves are uniformly arranged on the inner side of the axial sleeve part along the axial direction, pressure regulating grooves are arranged on the inner side of the axial sleeve part between the sliding strips and the stationary ring, and limiting retaining rings matched with the pressure regulating grooves are arranged on the outer side of the movable ring, and an axial pressure regulating gap is formed between the limiting retainer ring and the axial sleeve part in the pressure regulating limiting groove.

Advantageous effects

The utility model provides a machine seals multi-functional seal assembly. Compared with the prior art, the method has the following beneficial effects: the O-shaped sealing ring and the elastic secondary sealing check ring are adopted between the movable ring and the shaft for double sealing, the elastic secondary sealing check ring is extruded by the spring in the direction away from the static ring, the O-shaped sealing ring is extruded by the pressure-regulating spring and the check ring in the direction close to the static ring, the O-shaped sealing ring and the elastic secondary sealing check ring can be ensured to realize the tight double sealing function by adopting two opposite spring extrusion forces, the sealing effect is good, the medium driven ring and the shaft can be placed for permeation, simultaneously, the pressure of the spring on the movable ring can be adjusted at any time by adopting the axially adjustable bearing ring, the adjustment is convenient, meanwhile, the pressure-regulating limiting groove is additionally arranged on the movable ring by utilizing the limiting check ring additionally arranged on the movable ring, the limiting check ring can axially slide in the pressure-regulating limiting groove, and the axial pressure-regulating gap is the axial range of the limiting check ring which can move in the pressure-regulating limiting groove, also bear the ring at the pressure regulating in-process and can gliding distance on the rotating ring, the scope that can the pressure regulating, guarantee that the rotating ring is at suitable within range for the pressure of quiet ring, can not lead to sealed inefficacy because pressure is too little, can not lead the sealed face of actuating quiet ring to take place to warp because pressure is too big yet, the pressure regulating is effectual, in addition, the rotating ring adopts gliding mode to slide and sets up in bearing the ring, and evenly set up a plurality of axial spouts on the rotating ring, bearing the ring slides in the axial spout through evenly distributed's draw runner, the rotating ring can directly transmit radial load for bearing the ring through the draw runner, can in time share radial pressure, effectively protect the rotating ring.

Drawings

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

In the figure: 1. the device comprises a movable ring, a fixed ring, a shaft, a gland, a limiting seal gap, a fastening screw, a first O-shaped seal ring, a sealing groove, a second O-shaped seal ring, a sealing groove.

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, the present invention provides a technical solution: a mechanically sealed multi-function seal assembly comprising: the sealing structure comprises a moving ring 1, a stationary ring 2, a shaft 3 and a gland 4, wherein a sealing gap 5 is limited between the moving ring 1 and the stationary ring 2, the stationary ring 2 is connected with the gland 4 through a fastening screw 6, a first O-shaped sealing ring 7 is arranged between the stationary ring 2 and the gland 4, a sealing groove 8 is arranged at the inner side of one end of the moving ring 1 far away from the stationary ring 2, a second O-shaped sealing ring 9 is arranged in the sealing groove 8, one side of the second O-shaped sealing ring 9 close to the stationary ring 2 is provided with an elastic secondary sealing check ring 10, a plurality of first spring grooves 11 are uniformly arranged in the moving ring 1 at one side of the elastic secondary sealing check ring 10 close to the stationary ring 2 along the axial direction, first springs 12 matched with the first spring grooves 11 are respectively arranged in the first spring grooves 11, one end of each first spring 12 is abutted against the moving ring 1, and the other end of each first spring 12 is abutted against the elastic secondary sealing check ring 10, the cover is equipped with retaining ring 13 on the axle 3 that quiet ring 2 one end was kept away from to rotating ring 1 retaining ring 13 is provided with bearing ring 15 through adjusting screw 14 on the axle 3 of quiet ring 2 one end is kept away from to retaining ring 13, bearing ring 15 includes: the radial retaining ring portion 151 and the axial sleeve portion 152, the axial sleeve portion 152 extends to the outside of the moving ring 1, a cavity 16 is arranged between the radial retaining ring portion 151 and the retaining ring 13, a plurality of second spring grooves 1511 are uniformly arranged in the radial retaining ring portion 151 along the axial direction, second springs 17 matched with the second spring grooves 1511 are respectively arranged in the second spring grooves 1511, one ends of the second springs 17 extending into the second spring grooves 1511 are abutted against the radial retaining ring portion 151, the other ends of the second springs 17 extending out of the second spring grooves 1511 are abutted against the retaining ring 13, a plurality of axial sliding grooves 18 are uniformly arranged in the axial direction outside of one end of the moving ring 1 far away from the stationary ring 2, a plurality of sliding strips 1521 matched with the axial sliding grooves 18 are uniformly arranged in the axial direction inside of the axial sleeve portion 152, and a pressure regulating limiting groove 1522 is arranged in the axial sleeve portion 152 between the sliding strips 1521 and the stationary ring 2, the outer side of the movable ring 1 is provided with a limit retainer ring 19 which is matched with the pressure regulating limit groove 1522, and an axial pressure regulating gap 20 is formed between the limit retainer ring 19 and the axial sleeve part 152 in the pressure regulating limit groove 1522.

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)

1. A mechanically sealed multi-function seal assembly 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): a sealing groove (8) is arranged on the inner side of one end, far away from the static ring (2), of the movable ring (1), a second O-shaped sealing ring (9) is arranged in the sealing groove (8), the second O-shaped sealing ring (9) is close to one side of the static ring (2), an elastic secondary sealing check ring (10) is arranged in the sealing groove (8), the elastic secondary sealing check ring (10) is close to one side of the static ring (2), a plurality of first spring grooves (11) are uniformly arranged in the movable ring (1) along the axial direction, first springs (12) matched with the first spring grooves are respectively arranged in the first spring grooves (11), one end of each first spring (12) is abutted against the movable ring (1), the other end of each first spring (12) is abutted against the elastic secondary sealing check ring (10), a check ring (13) is sleeved on a shaft (3), far away from one end of the static ring (2), of the movable ring (1), a bearing ring (15) is arranged on the shaft (3) at one end, far away from the static ring (2), of the retainer ring (13) through an adjusting screw (14), and the bearing ring (15) comprises: the radial retaining ring comprises a radial retaining ring portion (151) and an axial sleeve portion (152), the axial sleeve portion (152) extends to the outer side of the moving ring (1), a cavity (16) is arranged between the radial retaining ring portion (151) and a retaining ring (13), a plurality of second spring grooves (1511) are uniformly arranged in the radial retaining ring portion (151) along the axial direction, second springs (17) matched with the second spring grooves (1511) are respectively arranged in the second spring grooves (1511), one ends of the second springs (17) extending into the second spring grooves (1511) are abutted against the radial retaining ring portion (151), the other ends of the second springs (17) extending out of the second spring grooves (1511) are abutted against the retaining ring (13), a plurality of axial sliding grooves (18) are uniformly arranged on the outer side of one end, far away from the static ring (2), of the moving ring (1) along the axial direction, and a plurality of sliding strips (1) matched with the axial sliding grooves (18) are uniformly arranged on the inner side of the axial sleeve portion (152) along the axial direction, the axial pressure regulating device is characterized in that a pressure regulating limiting groove (1522) is arranged on the inner side of an axial sleeve portion (152) between the sliding strip (1521) and the static ring (2), a limiting check ring (19) matched with the pressure regulating limiting groove (1522) is arranged on the outer side of the dynamic ring (1), and an axial pressure regulating gap (20) exists between the limiting check ring (19) and the axial sleeve portion (152) in the pressure regulating limiting groove (1522).

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