CN215334463U

CN215334463U - High-tightness mechanical sealing structure for filtering device

Info

Publication number: CN215334463U
Application number: CN202120963759.5U
Authority: CN
Inventors: 陈廷芳
Original assignee: Zhenjiang Yiyang Sealing Products Co ltd
Current assignee: Zhenjiang Yiyang Sealing Products Co ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-12-28
Anticipated expiration: 2031-05-08

Abstract

The utility model relates to the technical field of sealing structures, and discloses a high-sealing mechanical sealing structure for a filtering device, which solves the problem that the sealing performance of the plane end face between a movable ring and a static ring of the traditional mechanical sealing structure is poor due to the fact that the sealing is worn by rotation, and comprises a shell, wherein one end of the shell is connected with a rotating shaft in a penetrating mode, a sealing seat is sleeved at the outer end of the rotating shaft, and the sealing seat is embedded at one end of the shell. With the structure, the sealing performance is better.

Description

High-tightness mechanical sealing structure for filtering device

Technical Field

The utility model belongs to the technical field of sealing structures, and particularly relates to a high-sealing-performance mechanical sealing structure for a filtering device.

Background

Mechanical seal (mechanical seal) refers to a device for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal.

The existing mechanical sealing structure is connected with a static ring through equipment, a rotating ring is connected to a rotating shaft, a spring is arranged between the rotating ring and the static ring in the axial direction to ensure the end face of the rotating ring to be attached to the end face of the static ring, the rotating ring can rotate relative to the static ring, and the rotating ring and the end face of the static ring are attached to each other in a plane manner, so that the attachment surface is easily abraded due to long-term rotation, and the device is poor in sealing performance.

SUMMERY OF THE UTILITY MODEL

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides a high-tightness mechanical sealing structure for a filtering device, which effectively solves the problem of poor sealing performance caused by the fact that the plane end face seal between a movable ring and a fixed ring of the conventional mechanical sealing structure is subjected to rotational wear.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-tightness mechanical sealing structure for a filtering device comprises a shell, wherein one end of the shell is connected with a rotating shaft in a penetrating way, the outer end of the rotating shaft is sleeved with a sealing seat, the sealing seat is embedded at one end of the shell and is connected with the shell through a first fastening screw, one side inside the sealing seat is connected with a static ring through a first spring, a first sealing ring is connected between the static ring and the inner wall of the sealing seat, one end of the shell, far away from the sealing seat, is connected with a movable ring seat, the movable ring seat is connected with the rotating shaft through a second fastening screw, the movable ring seat is sleeved at the outer end of the sealing seat, a second sealing ring is connected between the movable ring seat and the sealing seat, a second spring is connected inside the movable ring seat, one end of the second spring is connected with a push ring, one end of the push ring is connected with a movable ring, a third sealing ring is connected between one end of the movable ring and the outer wall of the rotating shaft, a first annular groove is formed at one end of the movable ring, a second annular groove is formed at the outer side of the first annular groove, one end of the static ring is connected with a first convex ring corresponding to the first annular groove, one end of the static ring is connected with a second convex ring corresponding to the second annular groove, and the first convex ring and the second convex ring are respectively positioned in the first annular groove and the second annular groove.

Preferably, the shell is provided with a connecting hole corresponding to the embedded part of the sealing seat, the section of the connecting hole is in a step shape, and the sealing seat is matched with the connecting hole.

Preferably, a first sealing groove is formed in one side of the outer end of the stationary ring, and the first sealing ring is located in the first sealing groove.

Preferably, a first spring groove and a second spring groove are respectively formed in two ends of the first spring relative to one end of the sealing seat and one end of the stationary ring.

Preferably, the number of the second sealing rings is two, and the arc-shaped grooves are formed in the positions, corresponding to the second sealing rings, of the inner wall of the movable ring seat and the outer wall of the sealing seat.

Preferably, a second sealing groove is formed in one end of the movable ring, and the third sealing ring is located in the second sealing groove.

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the utility model, the first annular groove, the second annular groove, the first convex ring and the second convex ring are arranged between the movable ring and the stationary ring, and the first spring is arranged, the first convex ring and the second convex ring are respectively positioned in the first annular groove and the second annular groove, so that the stationary ring drives the first convex ring and the second convex ring to be abutted against the first annular groove and the second annular groove on the movable ring under the pushing of the elastic force of the first spring, the sealing performance is further improved, and compared with the existing structure that the plane end surface is contacted and abraded, the structure ensures that the sealing performance is better;

(2) this is novel seals between with rotating ring and pivot through the third sealing washer, and simultaneously, the rotating ring seat is established the seal receptacle cover, makes at the second sealing washer sealed between rotating ring seat and the seal receptacle, through such structure, and effectual making medium avoids leaking, improves sealed effect once more.

Drawings

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

In the drawings:

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

FIG. 2 is a schematic view of the mounting structure of the first male ring of the present invention;

FIG. 3 is an enlarged schematic view of A of FIG. 1 according to the present invention;

in the figure: 1. a housing; 2. a rotating shaft; 3. a sealing seat; 4. a first fastening screw; 5. a first spring; 6. a stationary ring; 7. a first seal ring; 8. a movable ring seat; 9. a second fastening screw; 10. a second seal ring; 11. a second spring; 12. a push ring; 13. a moving ring; 14. a third seal ring; 15. a first annular groove; 16. a second annular groove; 17. a first convex ring; 18. a second convex ring; 19. a first seal groove; 20. a first spring groove; 21. a second spring groove; 22. a second seal groove.

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.

In the first embodiment, as shown in fig. 1, 2 and 3, the present invention includes a housing 1, a rotating shaft 2 is connected to one end of the housing 1, a sealing seat 3 is sleeved on an outer end of the rotating shaft 2, the sealing seat 3 is embedded in one end of the housing 1, the sealing seat 3 is connected to the housing 1 through a first fastening screw 4, a stationary ring 6 is connected to one side inside the sealing seat 3 through a first spring 5, a first sealing ring 7 is connected between the stationary ring 6 and an inner wall of the sealing seat 3, a movable ring seat 8 is connected to one end of the housing 1 away from the sealing seat 3, the movable ring seat 8 is connected to the rotating shaft 2 through a second fastening screw 9, the movable ring seat 8 is sleeved on an outer end of the sealing seat 3, a second sealing ring 10 is connected between the movable ring seat 8 and the sealing seat 3, a second spring 11 is connected inside the movable ring seat 8, a push ring 12 is connected to one end of the second spring 11, a push ring 12 is connected to one end of the push ring 13, a third sealing ring 14 is connected between one end of the movable ring 13 and an outer wall of the rotating shaft 2, first ring channel 15 has been seted up to rotating ring 13 one end, and second ring channel 16 has been seted up in the first ring channel 15 outside, and quiet 6 one end of ring is connected with first bulge loop 17 corresponding first ring channel 15 department, and quiet 6 one end of ring is connected with second bulge loop 18 corresponding second ring channel 16 department, and first bulge loop 17 and second bulge loop 18 are located first ring channel 15 and second ring channel 16 respectively.

In the second embodiment, on the basis of the first embodiment, a connecting hole is formed in the position, corresponding to the embedded portion of the sealing seat 3, of the shell 1, the section of the connecting hole is in a step shape, and the sealing seat 3 is matched with the connecting hole, so that the sealing effect is increased when the sealing seat 3 is connected.

Third embodiment, on the basis of first embodiment, first seal groove 19 has been seted up to quiet ring 6 outer end one side, and first sealing washer 7 is located first seal groove 19, is convenient for install first sealing washer 7.

In the fourth embodiment, on the basis of the first embodiment, the first spring groove 20 and the second spring groove 21 are respectively formed at two ends of the first spring 5 relative to the sealing seat 3 and one end of the stationary ring 6, so that the first spring 5 can be conveniently limited and mounted.

Fifth, on the basis of first embodiment, second sealing washer 10 quantity is two, and the arc wall has all been seted up to corresponding second sealing washer 10 department of 8 inner walls of rotating ring seat and 3 outer walls of seal receptacle, is convenient for install second sealing washer 10 spacing, increases the leakproofness between seal receptacle 3 and the rotating ring seat 8.

Sixth embodiment, on the basis of the first embodiment, a second seal groove 22 is formed at one end of the moving ring 13, and the third seal ring 14 is located in the second seal groove 22, so that the third seal ring 14 is conveniently installed, and the moving ring 13 and the rotating shaft 2 are sealed.

The working principle is as follows: when the sealing device is used, the rotating shaft 2 drives the rotating ring 13 to rotate, the third sealing ring 14 enables the rotating ring 13 and the rotating shaft 2 to be sealed, meanwhile, the second sealing ring 10 enables the rotating ring seat 8 and the sealing seat 3 to be sealed, so that media are prevented from leaking, in addition, a first annular groove 15, a second annular groove 16, a first convex ring 17 and a second convex ring 18 are arranged between the rotating ring 13 and the static ring 6, the first convex ring 17 and the second convex ring 18 are respectively located in the first annular groove 15 and the second annular groove 16, and under the pushing of the elastic force of the first spring 5, the static ring 6 drives the first convex ring 17 and the second convex ring 18 to abut against the first annular groove 15 and the second annular groove 16 on the rotating ring 13, so that the sealing performance is further improved.

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 high-tightness mechanical seal structure for a filter device, comprising a housing (1), characterized in that: one end of the shell (1) is connected with a rotating shaft (2) in a penetrating manner, the outer end of the rotating shaft (2) is sleeved with a sealing seat (3), the sealing seat (3) is embedded at one end of the shell (1), the sealing seat (3) is connected with the shell (1) through a first fastening screw (4), one side of the inner part of the sealing seat (3) is connected with a static ring (6) through a first spring (5), a first sealing ring (7) is connected between the static ring (6) and the inner wall of the sealing seat (3), one end of the shell (1), far away from the sealing seat (3), is connected with a movable ring seat (8), the movable ring seat (8) is connected with the rotating shaft (2) through a second fastening screw (9), the outer end of the sealing seat (3) is sleeved with the movable ring seat (8), a second sealing ring (10) is connected between the movable ring seat (8) and the sealing seat (3), and a second spring (11) is connected inside the movable ring seat (8), second spring (11) one end is connected with and pushes away ring (12), it is connected with rotating ring (13) to push away ring (12) one end, be connected with third sealing washer (14) between rotating ring (13) one end and pivot (2) outer wall, first ring channel (15) have been seted up to rotating ring (13) one end, second ring channel (16) have been seted up in the first ring channel (15) outside, quiet ring (6) one end corresponds first ring channel (15) department and is connected with first bulge loop (17), quiet ring (6) one end corresponds second ring channel (16) department and is connected with second bulge loop (18), first bulge loop (17) and second bulge loop (18) are located first ring channel (15) and second ring channel (16) respectively.

2. A high-sealability mechanical seal structure for a filtration apparatus according to claim 1, wherein: the shell (1) is provided with a connecting hole corresponding to the embedded part of the sealing seat (3), the section of the connecting hole is in a step shape, and the sealing seat (3) is matched with the connecting hole.

3. A high-sealability mechanical seal structure for a filtration apparatus according to claim 1, wherein: first seal groove (19) have been seted up to quiet ring (6) outer end one side, first sealing washer (7) are located first seal groove (19).

4. A high-sealability mechanical seal structure for a filtration apparatus according to claim 1, wherein: and a first spring groove (20) and a second spring groove (21) are respectively formed at two ends of the first spring (5) relative to one end of the sealing seat (3) and one end of the static ring (6).

5. A high-sealability mechanical seal structure for a filtration apparatus according to claim 1, wherein: the number of the second sealing rings (10) is two, and arc-shaped grooves are formed in the positions, corresponding to the second sealing rings (10), of the inner wall of the movable ring seat (8) and the outer wall of the sealing seat (3).

6. A high-sealability mechanical seal structure for a filtration apparatus according to claim 1, wherein: a second sealing groove (22) is formed in one end of the movable ring (13), and the third sealing ring (14) is located in the second sealing groove (22).