CN211288751U

CN211288751U - Full-integrated split mechanical seal

Info

Publication number: CN211288751U
Application number: CN201921988514.7U
Authority: CN
Inventors: 杜烨; 李光伍
Original assignee: Zhangjiagang Seth Mechanical Seal Co ltd
Current assignee: Zhangjiagang Seth Mechanical Seal Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-08-18
Anticipated expiration: 2029-11-18

Abstract

The utility model relates to a full-integrated split mechanical seal, which comprises a main shaft, wherein the outer side of the main shaft is provided with a shaft sleeve, a sealing gasket is arranged on the shaft sleeve, a first O-shaped ring is arranged between the shaft sleeve and the main shaft, the right end of the shaft sleeve is provided with a movable ring, a second O-shaped ring is arranged between the shaft sleeve and the movable ring, the right side of the movable ring is provided with a stationary ring, the right end of the stationary ring is provided with a push ring, the right side of the push ring is provided with a gland, the shaft sleeve is fixedly connected with the main shaft through a shaft sleeve connecting screw, the shaft sleeve is connected with a positioning fixture block through an inner hexagonal cylinder head screw, the end part of the inner hexagonal cylinder head screw is connected with an inner hexagonal concave end fastening screw, the movable ring, the stationary ring, the push ring and the gland are all sleeved on the main shaft, the mechanical seal adopts a full-, the power of the installation is high at one time, and the maintenance downtime of the equipment is further shortened.

Description

Full-integrated split mechanical seal

Technical Field

The utility model relates to a full integrated package subdivision formula mechanical seal belongs to mechanical seal technical field.

Background

The split mechanical seal is an increasingly widely used mechanical seal form, has incomparable advantages compared with an integral mechanical seal, can be replaced without disassembling components such as a bearing, a speed reducer, a motor and the like, effectively solves the problem that some sealing elements are not easy to disassemble, can greatly save the shutdown maintenance time of large-scale rotating mechanical equipment, has wide application prospect and is one of the trends of mechanical seal development, but the existing split mechanical seal is mostly in a bulk structure, has larger and more complex installation workload, needs to adjust the installation position, has higher requirement on installation personnel, and is easy to cause mechanical seal failure due to the fact that the installation position is not in place.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model overcomes current defect, provides a complete collection dress subdivision formula mechanical seal, and this mechanical seal adopts complete collection dress subdivision formula structure, takes axle sleeve and positioning fixture block, can wholly preassemble integrative two halves, and the installation is dismantled conveniently succinctly, and one-time installation becomes the power height, further shortens the equipment maintenance down time, can effectively solve the problem in the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a full integrated split type mechanical seal, includes the main shaft, the main shaft outside is equipped with the axle sleeve, be equipped with seal gasket on the axle sleeve, be equipped with first O type circle between axle sleeve and the main shaft, the axle sleeve right-hand member is equipped with the rotating ring, be equipped with second O type circle between axle sleeve and the rotating ring, the rotating ring right side is equipped with quiet ring, quiet ring right-hand member is equipped with the throw-out collar, the throw-out collar right side is equipped with the gland, the axle sleeve passes through axle sleeve connecting screw fixed connection main shaft, the axle sleeve has a positioning fixture block through interior hexagonal cylinder head screw connection, interior hexagonal cylinder head screw end connection has interior hexagonal concave end holding screw, rotating ring, quiet ring, throw-out collar, gland all cup joint on the main shaft, still be equipped with the axle sleeve sealing strip between.

Further, the shaft sleeve is connected to the main shaft through a shaft sleeve positioning pin.

Further, one side of the gland is fixedly connected with a gland sealing strip, and a third O-shaped ring is arranged between the gland sealing strip and the static ring.

Further, the gland is fixedly connected with the push ring through a transmission screw, and a spring is sleeved on the transmission screw.

Furthermore, the outer side of the gland is connected with the shaft sleeve through a gland connecting screw and a gland positioning pin.

Further, the gland connecting screws are symmetrically arranged on the left side and the right side of the gland positioning pin.

The utility model discloses beneficial effect: the fully integrated split mechanical seal achieves sealed axial end face seal by means of pre-tightening of a spring on a static ring end face seal pair and a moving ring end face seal pair and pressing of medium pressure.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a radial sectional view of the fully integrated split mechanical seal structure of the present invention.

Fig. 2 is a longitudinal sectional view of the fully integrated split mechanical seal structure of the present invention.

Reference numbers in the figures: 1. sealing gaskets; 2. a shaft sleeve; 3. the shaft sleeve is connected with a screw; 4. a shaft sleeve positioning pin; 5. pressing a gland strip; 6. shaft sleeve sealing strips; 7. a first O-ring; 8. a moving ring; 9. A second O-ring; 10. a stationary ring; 11. a third O-ring; 12. a push ring; 13. a drive screw; 14. a spring; 15. a gland; 16. positioning a fixture block; 17. a main shaft; 18. a set screw is fastened at the concave end of the inner hexagon; 19. a socket head cap screw; 20. a gland connecting screw; 21. and (6) pressing and positioning pins.

Detailed Description

The present invention will be further described with reference to the following embodiments, wherein the drawings are for illustrative purposes only and are not intended to be limiting, and in order to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced and do not represent the size of an actual product.

Example 1

As shown in fig. 1-2, a fully integrated split mechanical seal comprises a main shaft 17, a shaft sleeve 2 is arranged outside the main shaft 17, a seal gasket 1 is arranged on the shaft sleeve 2, a first O-ring 7 is arranged between the shaft sleeve 2 and the main shaft 17, a movable ring 8 is arranged at the right end of the shaft sleeve 2, a second O-ring 9 is arranged between the shaft sleeve 2 and the movable ring 8, a stationary ring 10 is arranged at the right side of the movable ring 8, a push ring 12 is arranged at the right end of the stationary ring 10, a gland 15 is arranged at the right side of the push ring 12, the shaft sleeve 2 is fixedly connected with the main shaft 17 through a shaft sleeve connecting screw 3, the shaft sleeve 2 is connected with a positioning fixture block 16 through an inner hexagonal socket head screw 19, the end of the inner hexagonal socket head screw 19 is connected with an inner hexagonal concave end set screw 18, the movable ring 8, the stationary ring 10, the push ring 12, the gland 15 and, and a shaft sleeve sealing strip 6 is also arranged between the shaft sleeve 2 and the movable ring 8.

In the present embodiment, the sleeve 2 is connected to the main shaft 17 by a sleeve positioning pin 4.

In this embodiment, a gland sealing strip 5 is fixedly connected to one side of the gland 15, and a third O-ring 11 is arranged between the gland sealing strip 5 and the stationary ring 10.

In this embodiment, the pressing cover 15 is fixedly connected to the pushing ring 12 through a driving screw 13, and the driving screw 13 is sleeved with a spring 14.

In the embodiment, the outer side of the gland 15 is connected with the shaft sleeve 2 through a gland connecting screw 20 and a gland positioning pin 21.

In this embodiment, the gland coupling screws 20 are symmetrically disposed at left and right sides of the gland positioning pin 21.

Example 2

The shaft diameter of the full packaging split type mechanical seal is 20-300 mm; the use temperature is-30 ℃ to 200 ℃; the pressure range is vacuum-5.0 bar; linear velocity <15 m/s; the mechanical seal is of a full-split structure, and a supporting mechanism and a driving mechanism of mechanical equipment do not need to be moved in the whole installation and disassembly processes; the split mechanical seal is of a full-integrated structure, the compression height does not need to be adjusted in the installation process, and the scattering of parts and the installation deficiency do not need to be worried about.

The utility model discloses improve in: a kind of all-integrated split mechanical seal, the all-integrated split mechanical seal is an axial end face seal device which relies on the spring 14 to the pretension of the static and dynamic ring end face seal pair and the pressure of the medium to achieve the seal, when installing, the shaft sleeve connecting screw 3, the gland connecting screw 20 are unscrewed by the hexagon socket wrench, the split mechanical seal is divided into two halves; precisely positioning and combining the two half-split mechanical seals at the installation positions of the mechanical seals on the shaft through a shaft sleeve positioning pin 4 and a gland positioning pin 21; screwing the connecting screw 3 and the gland connecting screw 20 by using an inner hexagonal wrench, pushing the mechanical seal to the equipment mounting surface integrally, and connecting the mechanical seal and the equipment together by using a bolt through a U-shaped groove formed in the mechanical seal gland; screwing the hexagon socket head cap concave end set screw 18 on the equipment shaft by using a hexagon socket wrench, loosening the hexagon socket head cap screw 19, and removing the piece positioning fixture block 16; connect and wash the pipeline, the barring guarantees that the axle rotates smoothly, does not have the extraneous sound, and the installation of full collection dress subdivision formula mechanical seal up to this moment is accomplished, possesses the test run condition.

The foregoing is an embodiment of the preferred embodiment of the present invention, showing and describing the basic principles and main features of the present invention and the advantages of the present invention, it should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, and the foregoing embodiments and descriptions are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the present invention as claimed, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully integrated split mechanical seal comprising a main shaft (17), characterized in that: the utility model discloses a seal structure of a motor, including main shaft (17), seal gasket (1) are equipped with on axle sleeve (2), be equipped with first O type circle (7) between axle sleeve (2) and main shaft (17), axle sleeve (2) right-hand member is equipped with rotating ring (8), be equipped with second O type circle (9) between axle sleeve (2) and rotating ring (8), rotating ring (8) right side is equipped with quiet ring (10), quiet ring (10) right-hand member is equipped with throw-out collar (12), throw-out collar (12) right side is equipped with gland (15), axle sleeve (2) are through axle sleeve connecting screw (3) fixed connection main shaft (17), axle sleeve (2) are connected with location fixture block (16) through interior hexagonal head screw (19), interior hexagonal head screw (19) end connection has interior hexagonal concave end set screw (18), rotating ring (8), quiet ring (10), The push ring (12), the gland (15) and the shaft sleeve connecting screw (3) are all sleeved on the main shaft (17), and a shaft sleeve sealing strip (6) is further arranged between the shaft sleeve (2) and the movable ring (8).

2. A fully integrated split mechanical seal according to claim 1 wherein: the shaft sleeve (2) is connected to the main shaft (17) through a shaft sleeve positioning pin (4).

3. A fully integrated split mechanical seal according to claim 1 wherein: gland (15) one side fixedly connected with gland sealing strip (5), be equipped with third O type circle (11) between gland sealing strip (5) and quiet ring (10).

4. A fully integrated split mechanical seal according to claim 1 wherein: the gland (15) is fixedly connected with the push ring (12) through a transmission screw (13), and a spring (14) is sleeved on the transmission screw (13).

5. A fully integrated split mechanical seal according to claim 1 wherein: the outer side of the gland (15) is connected with the shaft sleeve (2) through a gland connecting screw (20) and a gland positioning pin (21).

6. A fully integrated split mechanical seal according to claim 5 wherein: the gland connecting screws (20) are symmetrically arranged at the left side and the right side of the gland positioning pin (21).