CN217328458U

CN217328458U - Externally-mounted water adding mechanical seal

Info

Publication number: CN217328458U
Application number: CN202220803014.7U
Authority: CN
Inventors: 任振林; 韦尚鹏; 陈春生
Original assignee: Honghao Pump Industry Co ltd
Current assignee: Honghao Pump Industry Co ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-08-30
Anticipated expiration: 2032-04-08

Abstract

The utility model belongs to the technical field of mechanical seal, an outer dress formula mechanical seal that adds water is disclosed, the technical problem who exists in the outer dress mechanical seal of solution prior art, this mechanical seal includes quiet ring seat, be equipped with water feeding channel and exhalant canal on the quiet ring seat, water feeding channel is connected with the cooling water takeover, quiet ring seat inboard is equipped with quiet ring, be equipped with cooling water inlet channel and cooling water outlet channel on the quiet ring, the rotating ring is equipped with to the lateral part of quiet ring, the bellows is equipped with to one side that the rotating ring kept away from quiet ring, the rotating ring, the spring holder is equipped with in the bellows outside, the positioning seat is equipped with to one side that the rotating ring was kept away from to the bellows, the clamp is equipped with in the positioning seat outside. The utility model discloses be convenient for inspection and maintenance. The static ring and the dynamic ring are provided with the holes and the grooves, so that two friction surfaces which are connected in parallel are formed, one friction surface is used for sealing a medium, the other friction surface is used for sealing cooling water, the cooling water cools and lubricates a sealing surface and takes away friction heat, and meanwhile, the sealing surface is exposed in the air, so that the heat dissipation is facilitated, and the service life of the sealing is prolonged.

Description

Externally-mounted water adding mechanical seal

Technical Field

The utility model relates to a mechanical seal technical field, concretely relates to adorn formula mechanical seal that adds water outward.

Background

When strong corrosive medium is conveyed, an external mechanical seal is usually adopted, but the heat loss of the seal is failed due to the fact that cooling water cannot be added, so that the service life is short, the pump is stopped, overhauled and sealed frequently replaced, and the technical problem cannot be solved in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a long service life's outer dress formula mechanical seal that adds water in order to solve the technical problem that exists among the outer dress mechanical seal of prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an external dress formula mechanical seal that adds water, includes quiet ring holder, and quiet ring holder inboard is equipped with quiet ring, and the lateral part of quiet ring is equipped with the rotating ring, and the bellows is equipped with to one side that the rotating ring kept away from quiet ring, and the spring holder is equipped with to the rotating ring, the bellows outside, be equipped with on the quiet ring holder and add water passageway and exhalant canal, add water passageway and be connected with the cooling water takeover, be equipped with cooling water inlet channel and cooling water outlet channel on the quiet ring, and cooling water inlet channel and add water passageway intercommunication, cooling water outlet channel and exhalant canal intercommunication.

Furthermore, one side of the static ring close to the movable ring is provided with a static ring sealing surface, a static ring annular groove is arranged on the static ring sealing surface, and the static ring annular groove is communicated with the cooling water inlet channel and the cooling water outlet channel.

Furthermore, one side of the movable ring close to the static ring is provided with a movable ring sealing surface, a movable ring annular groove is arranged on the movable ring sealing surface, and the movable ring annular groove corresponds to the static ring annular groove in position.

Furthermore, a semicircular groove is formed in the inner side of the static ring seat and communicated with the water feeding channel and the water outlet channel.

Furthermore, a spring is arranged in the spring seat, a spring blocking piece is arranged on the outer side of the spring seat, and a transmission pin is arranged on the spring seat and the spring blocking piece.

Furthermore, the clamp is also provided with a locking screw.

Furthermore, a movable ring pad is arranged on one side of the movable ring close to the spring seat, and the movable ring pad is positioned on the inner side of the spring seat.

Furthermore, a static ring O-shaped sealing ring is arranged at the installation position of the static ring seat and the static ring.

Furthermore, the outer side of the static ring-shaped groove is a first static ring friction surface, the outer side of the static ring-shaped groove is a second static ring friction surface, the outer side of the dynamic ring-shaped groove is a first dynamic ring friction surface, and the inner side of the dynamic ring-shaped groove is a second dynamic ring friction surface.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model discloses a moving ring adopts the bellows form, simple structure, and the installation of being convenient for, regulation sealing force have made things convenient for the maintenance. The utility model discloses a spare parts such as spring holder, rotating ring seat expose, but the operating condition of direct observation main spring, the inspection and the maintenance of being convenient for.

The external water adding mechanical seal of the utility model forms two parallel friction surfaces, one friction surface sealing medium and the other friction surface sealing cooling water through the holes and the grooves on the static ring and the dynamic ring, the cooling water cools the lubricating sealing surface to take away friction heat, and the sealing surface is exposed in the air and rotates, thereby being beneficial to heat dissipation due to the convection of the air and prolonging the service life of the seal; and all the sealing metal parts do not contact with the conveying medium, so that the strong corrosion resistance of the seal is improved.

The utility model discloses an outer dress formula mechanical seal that adds water forms two sealed faces through fluting on same quiet, rotating ring, has both guaranteed the machining precision, makes the simple structure of machine seal again, simple to operate to sealed life-span has been improved.

The utility model discloses an outer dress formula of adding water mechanical seal's rotating ring moment of torsion passes through the transmission of drive pin, has improved transmission capacity, prevents that the bellows from damaging because the moment of torsion is too big to the machine that leads to seals inefficacy. The service life of the mechanical seal is prolonged.

The utility model discloses a quiet ring is sealed through two O type circles of quiet ring holder inner chamber, prevents that the cooling water from leaking, has fixed quiet ring simultaneously, prevents that quiet ring from falling out in quiet ring holder, has made things convenient for the installation.

The utility model discloses a processing has two semi-circular annular runners in the quiet ring seat inner chamber, makes the unobstructed even cooling water passageway that enters into the quiet ring excircle of cooling water. Meanwhile, the water inlet and the water outlet are separated, so that the friction surface can be cooled more fully.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 and fig. 2 are schematic structural views of the stationary ring seat.

Fig. 3 is a schematic structural diagram of a stationary ring.

Fig. 4 is a schematic structural view of the rotating ring.

The reference numerals have the following meanings: 1. a stationary ring; 2. a stationary ring O-shaped seal ring; 3. a stationary ring seat; 4. a cooling water connection pipe; 5. a moving ring; 6. a spring seat; 7. a bellows; 8. a drive pin; 9. clamping a hoop; 10. positioning seats; 11. an anti-rotation pin; 12. a shaft sleeve; 13. locking screws; 14. a spring; 15. a spring catch; 16. a movable ring pad; 17. a semicircular groove; 18. a cooling water inlet channel; 19. a first stationary ring friction surface; 20. a second stationary ring friction surface; 21. a stationary ring annular groove; 22. a cooling water outlet passage; 23. a first rotating ring friction surface; 24. a moving ring annular groove; 25. a second rotating ring friction surface.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1-4, an externally-mounted water-feeding mechanical seal comprises a stationary ring seat 3, a water feeding channel and a water outlet channel are arranged on the stationary ring seat 3, the water feeding channel is connected with a cooling water connecting pipe 4, a semicircular groove 17 is arranged on the inner side of the stationary ring seat 3, and the semicircular groove 17 is communicated with the water feeding channel and the water outlet channel.

The inner side of the static ring seat 3 is provided with a static ring 1, and the installation position of the static ring seat 3 and the static ring 1 is provided with a static ring O-shaped sealing ring 2. Be equipped with cooling water inlet passage 18 and cooling water outlet passage 22 on the quiet ring 1, the rotating ring 5 is equipped with to the lateral part of quiet ring 1, and bellows 7 is equipped with to one side that the rotating ring 5 kept away from quiet ring 1, and the spring holder 6 is equipped with to the rotating ring 5, the bellows 7 outside, and the rotating ring 5 is equipped with the rotating ring pad 16 near one side of spring holder 6, and the rotating ring pad 16 is located the inboard of spring holder 6. The corrugated pipe 7 is equipped with positioning seat 10 in the one side of keeping away from rotating ring 5, and the clamp 9 is equipped with in the positioning seat 10 outside, still is equipped with locking screw 13 on the clamp 9, and spring holder 6 keeps away from rotating ring 5 terminal surface processing has six holes, and six springs 14 are equipped with in the hole, and spring catch 15 is equipped with in the spring holder 6 outside, is equipped with driving pin 8 on spring holder 6, the spring catch 15.

One side of the static ring 1 close to the dynamic ring 5 is provided with a static ring sealing surface, a static ring annular groove 21 is arranged on the static ring sealing surface, and the static ring annular groove 21 is communicated with a cooling water inlet channel 18 and a cooling water outlet channel 22. The outer side of the static ring groove 21 is provided with a first static ring friction surface 19, and the outer side of the static ring groove 21 is provided with a second static ring friction surface 20.

One side of the movable ring 5 close to the stationary ring 1 is provided with a movable ring sealing surface, the movable ring sealing surface is provided with a movable ring annular groove 24, and the position of the movable ring annular groove 24 corresponds to the position of the stationary ring annular groove 21. The outer side of the movable ring annular groove 24 is provided with a first movable ring friction surface 23, and the inner side of the movable ring annular groove 24 is provided with a second movable ring friction surface 25.

The movable ring 5, the movable ring pad 16, the bellows 7, the spring 14, the transmission pin 8, the spring catch 15, the spring seat 6, the positioning seat 10, the hoop 9 and the locking screw 13 form an integral movable ring assembly through tight assembly, the integral movable ring assembly is arranged on the excircle of the shaft sleeve 12, and the shaft sleeve 12 is connected with the shaft through the anti-rotation pin 11.

When the centrifugal pump is used, the sealing assembly is well installed on the centrifugal pump, the static ring seat 3 and the pump cover are fastened through the bolt, the static ring 1 is in contact with the pump cover, and the sealing gasket is installed at the contact position. The assembled movable ring assembly is arranged on a shaft sleeve 12 and then arranged on a pump shaft, cooling water is introduced from a cooling water connecting pipe 4, the cooling water enters a cooling water inlet 18 through a semicircular groove 17, then enters a static ring annular groove 21 and a static ring annular groove 24, cools and lubricates a first static ring friction surface 19, a second static ring friction surface 20, a first movable ring friction surface 23 and a second movable ring friction surface 24, and then flows away from a cooling water outlet 22 to take away friction heat, so that the sealing service life is prolonged.

Claims

1. The utility model provides an adorn formula mechanical seal that adds water outward, includes quiet ring holder (3), quiet ring holder (3) inboard is equipped with quiet ring (1), and the lateral part of quiet ring (1) is equipped with rotating ring (5), and bellows (7) are equipped with to one side that quiet ring (1) were kept away from in rotating ring (5), and spring holder (6), characterized by are equipped with in rotating ring (5), the bellows (7) outside: the static ring seat (3) is provided with a water adding channel and a water outlet channel, the water adding channel is connected with a cooling water connecting pipe (4), the static ring (1) is provided with a cooling water inlet channel (18) and a cooling water outlet channel (22), the cooling water inlet channel (18) is communicated with the water adding channel, and the cooling water outlet channel (22) is communicated with the water outlet channel.

2. An externally-mounted water-adding mechanical seal according to claim 1, characterized in that: one side of the static ring (1) close to the movable ring (5) is provided with a static ring sealing surface, a static ring annular groove (21) is arranged on the static ring sealing surface, and the static ring annular groove (21) is communicated with a cooling water inlet channel (18) and a cooling water outlet channel (22).

3. An externally-mounted water-adding mechanical seal according to claim 2, characterized in that: one side of the movable ring (5) close to the stationary ring (1) is provided with a movable ring sealing surface, a movable ring annular groove (24) is arranged on the movable ring sealing surface, and the position of the movable ring annular groove (24) corresponds to that of the stationary ring annular groove (21).

4. An externally-mounted water-adding mechanical seal according to claim 3, characterized in that: the inner side of the static ring seat (3) is provided with a semicircular groove (17), and the semicircular groove (17) is communicated with the water adding channel and the water outlet channel.

5. An externally-mounted water-adding mechanical seal according to claim 4, wherein: the spring seat (6) is internally provided with a spring (14), the outer side of the spring seat (6) is provided with a spring stop piece (15), and the spring seat (6) and the spring stop piece (15) are provided with a transmission pin (8).

6. An externally-mounted water-adding mechanical seal according to claim 1, characterized in that: one side of the movable ring (5) close to the spring seat (6) is provided with a movable ring pad (16), and the movable ring pad (16) is positioned on the inner side of the spring seat (6).

7. An externally-mounted water adding mechanical seal according to claim 1, characterized in that: and a static ring O-shaped sealing ring (2) is arranged at the installation position of the static ring seat (3) and the static ring (1).

8. An externally-mounted water adding mechanical seal according to claim 3, characterized in that: the outer side of the static ring groove (21) is a first static ring friction surface (19), the outer side of the static ring groove (21) is a second static ring friction surface (20), the outer side of the dynamic ring groove (24) is a first dynamic ring friction surface (23), and the inner side of the dynamic ring groove (24) is a second dynamic ring friction surface (25).