CN215567933U

CN215567933U - Dry-grinding-resistant mechanical sealing element

Info

Publication number: CN215567933U
Application number: CN202120991267.7U
Authority: CN
Inventors: 顾俊
Original assignee: Jingjiang City Oxi Mechanical Equipment Co ltd
Current assignee: Jingjiang City Oxi Mechanical Equipment Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-01-18
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses a dry-grinding-resistant mechanical sealing element which comprises a rotating shaft, wherein a static ring and a moving ring are arranged on the surface of the rotating shaft, first sealing gaskets are arranged between the inner surfaces of the static ring and the moving ring and the rotating shaft, mounting holes are formed in the two sides of the moving ring, bolts are in threaded connection with the inside of the mounting holes, a telescopic rod is fixedly connected to the left side of the moving ring, a spring is sleeved on the surface of the telescopic rod, a connecting ring is fixedly connected to the left end of the telescopic rod, a connecting shaft is fixedly connected to the left side of the connecting ring, a shaft hole is formed in the right side of the static ring and is matched with the connecting shaft, and the left end of the connecting shaft extends into the shaft hole. This resistant dry grinding mechanical seal, it is great to have solved the area of contact between some mechanical seal device quiet ring and the rotating ring, and coefficient of friction is great for the rotating ring is worn and torn easily with the contact surface of quiet ring, leads to the leakproofness to descend and takes place the problem of leaking.

Description

Dry-grinding-resistant mechanical sealing element

Technical Field

The utility model relates to the technical field of mechanical sealing elements, in particular to a dry-grinding-resistant mechanical sealing element.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to a rotating axis, keeping fit and sliding relatively under the action of fluid pressure and elastic force or magnetic force of a compensation mechanism and the cooperation of auxiliary seals, and is commonly used for equipment such as centrifugal pumps, centrifuges, reaction kettles, compressors and the like.

The contact area between the static ring and the dynamic ring of the existing mechanical sealing device is large, the friction coefficient is large, the contact surface between the dynamic ring and the static ring is easy to wear, the sealing performance is reduced, leakage is caused, and the service life of a sealing element is shortened.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a dry-grinding resistant mechanical sealing element, which solves the problem that the contact surface between a movable ring and a static ring is easy to wear and the sealing performance is reduced and leakage is caused because the contact area between the static ring and the movable ring is large and the friction coefficient is large in the conventional mechanical sealing device.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a resistant dry grinding mechanical seal spare, includes the pivot, the surface of pivot is provided with quiet circle and movable coil to all be provided with first seal ring between the internal surface of quiet circle and movable coil and the pivot, the mounting hole has all been seted up to the both sides of movable coil to the inside threaded connection of mounting hole has the bolt, the left side fixedly connected with telescopic link of movable coil to the surface cover of telescopic link is equipped with the spring, the left end fixedly connected with go-between of telescopic link to the left side fixedly connected with connecting axle of go-between, the shaft hole has been seted up on the right side of quiet circle to shaft hole and connecting axle looks adaptation, the left end of connecting axle extends to the inside in shaft hole.

Preferably: the right side of the connecting ring is provided with a mounting groove matched with the telescopic rod, and the surface of the connecting shaft is fixedly connected with an arc-shaped convex block.

Preferably: the inner wall and the outer wall of the connecting ring are both fixedly connected with connecting blocks, and one side of each connecting block is slidably connected with a connecting plate.

Preferably: and one side of the connecting plate is provided with a sliding chute matched with the connecting block, and the right side of the connecting plate is fixedly connected with the left side of the moving coil.

Preferably: and the left side of the inner wall of the connecting ring is fixedly connected with a second sealing washer, and the inner side of the second sealing washer is contacted with the surface of the rotating shaft.

Preferably: the inner diameters of the static ring and the moving ring are matched with the outer diameter of the rotating shaft, and the moving ring is fixedly connected with the rotating shaft through a bolt.

Advantageous effects

The utility model provides a dry-abrasion resistant mechanical seal. The method has the following beneficial effects:

(1) this resistant dry grinding mechanical seal spare, the during operation guarantees the leakproofness through first seal ring and second seal ring, and the go-between passes through the inner wall rotation of connecting axle and arc lug and shaft hole to be connected, has reduced the area of contact of go-between with quiet circle, and it is great to have solved the area of contact between some mechanical seal device quiet ring and the rotating ring, and coefficient of friction is great for the rotating ring is worn and torn easily with the contact surface of quiet ring, leads to the leakproofness decline to take place the problem of leaking.

(2) This resistant dry grinding mechanical seal spare, through the rational in infrastructure practicality of this equipment, installation convenient to use to thereby the spring has sufficient effort to the go-between when having guaranteed the start through the setting that adopts a plurality of springs, and the movement track of go-between can be injectd in setting up of telescopic link, connecting block and spout, avoids the spring to take place distortion, guarantees the steadiness of mechanical seal spare structure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention.

In the figure: the sealing device comprises a rotating shaft 1, a static ring 2, a moving ring 3, a first sealing washer 4, a mounting hole 5, a bolt 6, a telescopic rod 7, a spring 8, a connecting ring 9, a mounting groove 10, a connecting block 11, a connecting plate 12, a sliding groove 13, a connecting shaft 14, an arc-shaped convex block 15, a shaft hole 16 and a second sealing washer 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a resistant dry grinding mechanical seal spare, including pivot 1, the surface of pivot 1 is provided with quiet circle 2 and moving coil 3, and all be provided with first seal ring 4 between the internal surface of quiet circle 2 and moving coil 3 and pivot 1, mounting hole 5 has all been seted up to the both sides of moving coil 3, and the inside threaded connection of mounting hole 5 has bolt 6, the left side fixedly connected with telescopic link 7 of moving coil 3, and the surface cover of telescopic link 7 is equipped with spring 8, the left end fixedly connected with go-between 9 of telescopic link 7, and the left side fixedly connected with connecting axle 14 of go-between 9, shaft hole 16 has been seted up on the right side of quiet circle 2, and shaft hole 16 and the 14 looks adaptations of connecting axle, the left end of connecting axle 14 extends to the inside in shaft hole 16.

Further: the right side of the connecting ring 9 is provided with a mounting groove 10 matched with the telescopic rod 7, and the surface of the connecting shaft 14 is fixedly connected with an arc-shaped convex block 15.

Further: the inner wall and the outer wall of the connecting ring 9 are both fixedly connected with a connecting block 11, and one side of the connecting block 11 is slidably connected with a connecting plate 12.

Further: one side of the connecting plate 12 is provided with a sliding groove 13 matched with the connecting block 11, and the right side of the connecting plate 12 is fixedly connected with the left side of the moving coil 3.

Further: a second sealing washer 17 is fixedly coupled to the left side of the inner wall of the connection ring 9, and the inner side of the second sealing washer 17 is in contact with the surface of the rotation shaft 1.

Further: the inner diameters of the static ring 2 and the moving ring 3 are matched with the outer diameter of the rotating shaft 1, and the moving ring 3 is fixedly connected with the rotating shaft 1 through a bolt 6.

When the sealing device is used, the static ring 2 and the moving ring 3 are sleeved on the surface of the rotating shaft 1, the static ring 2 is fixed on the surface of equipment, the connecting shaft is ensured to be positioned inside the shaft hole 16 when the spring 8 is in a compressed state, then the moving ring 3 is fixed with the rotating shaft 1 through the bolt 6 of the mounting hole 5, the sealing performance is ensured through the first sealing washer 4 and the second sealing washer 17 when the sealing device works, the connecting ring 9 is rotationally connected with the inner wall of the shaft hole 16 through the connecting shaft 14 and the arc-shaped bump 15, the contact area between the connecting ring 9 and the static ring 2 is reduced, the friction coefficient is reduced, the wear resistance of the sealing device is enhanced, the spring 8 has enough acting force on the connecting ring 3 when the sealing device is started by adopting the arrangement of the plurality of springs 8, the arrangement of the telescopic rod 7, the connecting block 11 and the sliding groove 12 can limit the movement track of the connecting ring 9, and the distortion of the spring 8 is avoided, the structural stability of the mechanical sealing element is ensured.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A dry-resistant mechanical seal comprising a shaft (1), characterized in that: the surface of pivot (1) is provided with quiet circle (2) and movable coil (3) to all be provided with first seal ring (4) between the internal surface of quiet circle (2) and movable coil (3) and pivot (1), mounting hole (5) have all been seted up to the both sides of movable coil (3) to the internal thread connection of mounting hole (5) has bolt (6), the left side fixedly connected with telescopic link (7) of movable coil (3), and the surface cover of telescopic link (7) is equipped with spring (8), the left end fixedly connected with go-between (9) of telescopic link (7) to the left side fixedly connected with connecting axle (14) of go-between (9), shaft hole (16) have been seted up on the right side of quiet circle (2) to shaft hole (16) and connecting axle (14) looks adaptation, the left end of connecting axle (14) extends to the inside in shaft hole (16).

2. A dry abrasion resistant mechanical seal as claimed in claim 1, wherein: the right side of the connecting ring (9) is provided with a mounting groove (10) matched with the telescopic rod (7), and the surface of the connecting shaft (14) is fixedly connected with an arc-shaped convex block (15).

3. A dry abrasion resistant mechanical seal as claimed in claim 1, wherein: the inner wall and the outer wall of the connecting ring (9) are both fixedly connected with connecting blocks (11), and one side of each connecting block (11) is slidably connected with a connecting plate (12).

4. A dry abrasion resistant mechanical seal as claimed in claim 3, wherein: one side of the connecting plate (12) is provided with a sliding groove (13) matched with the connecting block (11), and the right side of the connecting plate (12) is fixedly connected with the left side of the moving coil (3).

5. A dry abrasion resistant mechanical seal as claimed in claim 1, wherein: and a second sealing washer (17) is fixedly connected to the left side of the inner wall of the connecting ring (9), and the inner side of the second sealing washer (17) is in contact with the surface of the rotating shaft (1).

6. A dry abrasion resistant mechanical seal as claimed in claim 1, wherein: the inner diameters of the static ring (2) and the moving ring (3) are matched with the outer diameter of the rotating shaft (1), and the moving ring (3) is fixedly connected with the rotating shaft (1) through a bolt (6).