CN210068940U

CN210068940U - Mechanical sealing structure

Info

Publication number: CN210068940U
Application number: CN201920613314.7U
Authority: CN
Inventors: 陈益春
Original assignee: Wenzhou Risheng Seal Manufacturing Co Ltd
Current assignee: Wenzhou Risheng Seal Manufacturing Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-14
Anticipated expiration: 2029-04-29

Abstract

The utility model relates to a mechanical sealing structure, which comprises a movable ring, a static ring, a fixed base for fixing the movable ring, a protective sleeve and a protective sleeve, wherein the inner side wall of the protective sleeve is provided with a first limit groove; an annular bulge is arranged on the movable ring, a first movable sealing surface and a second movable sealing surface are respectively arranged on two side walls of the bulge, a groove corresponding to the bulge is arranged on the static ring, and a first static sealing surface and a second static sealing surface are respectively arranged on two side walls of the groove. The mechanical sealing structure adopts the elastic parts in different states to replace, and different sealing surfaces are used simultaneously, so that the service life of the mechanical sealing structure is prolonged by one time.

Description

Mechanical sealing structure

Technical Field

The utility model relates to a sealing member, especially a mechanical seal structure.

Background

The mechanical sealing structure is a shaft sealing device of a rotating machine. The sealing surface and the spring that the sound ring offsets are the most fragile in the application to current mechanical seal structure, and the long-time wearing and tearing of sealing surface lead to sealed effect stable, and the disappearance of same spring force also influences mechanical seal's sealed effect, and above problem directly leads to current mechanical seal life to be short.

SUMMERY OF THE UTILITY MODEL

To the not enough in the background art, the utility model provides a mechanical seal structure to overcome above defect.

The utility model provides a technical scheme that its technical problem adopted is:

a mechanical sealing structure comprises a movable ring, a static ring, a fixed base used for fixing the movable ring, a protecting sleeve and a protecting sleeve, wherein a first limiting groove is formed in the inner side wall of the protecting sleeve; the movable ring is provided with an annular bulge, two side walls of the bulge are respectively a first movable sealing surface and a second movable sealing surface, the stationary ring is provided with a groove corresponding to the bulge, and two side walls of the groove are respectively a first stationary sealing surface and a second stationary sealing surface.

The protective sleeve and the protective sleeve are respectively provided with continuous steps which are buckled with each other, and the sealing rings are arranged at the steps.

The protective sheath is the metal material.

The elastic member is a compression elastic member or a tension elastic member.

By adopting the technical scheme, the problem that the service life of the existing mechanical sealing structure is short is effectively solved, the mechanical sealing structure is reasonable and simple in structural design, and the service life of the mechanical sealing structure is prolonged by one time by replacing the elastic parts in different states and using different sealing surfaces simultaneously.

Drawings

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

Fig. 2 is a partially enlarged schematic view of fig. 1.

In the figure 1, a moving ring; 2. a stationary ring; 3. a fixed base; 4. a protective sleeve; 5. a protective sleeve; 45. continuous steps; 54. a seal ring; 6. an elastic member; 7. a protrusion; 71. a first dynamic sealing surface; 72. a second dynamic sealing surface; 8. a groove; 81. a static sealing surface I; 82. and a static sealing surface II.

Detailed Description

Referring to fig. 1 and fig. 2, the present invention: a mechanical seal structure comprises a moving ring 1, a stationary ring 2, a fixed base 3, a protective sleeve 4 and a protective sleeve 5, wherein the fixed base 3 is used for fixing the moving ring 1, a first limiting groove 41 is formed in the inner side wall of the protective sleeve 4, the fixed base 3 is fixed on a rotating shaft, the stationary ring 2 is arranged at one end, far away from the protective sleeve 4, of the protective sleeve 5, a second limiting groove 51 corresponding to the first limiting groove 41 is formed in the inner side of the end of the protective sleeve 5, an elastic part 6 is arranged between the first limiting groove 41 and the second limiting groove 51, and two end parts of the elastic part 6 are respectively arranged in the two limiting grooves; the movable ring 1 is provided with an annular bulge 7, two side walls of the bulge 7 are respectively a first movable sealing surface 71 and a second movable sealing surface 72, the stationary ring 2 is provided with a groove 8 corresponding to the bulge 7, and two side walls of the groove 8 are respectively a first stationary sealing surface 81 and a second stationary sealing surface 82.

As shown in fig. 1, the protecting sleeve 4 and the protecting sleeve 5 are both provided with continuous steps 45 which are fastened with each other, and the steps are provided with sealing rings 54, so that the protecting sleeve 4 and the protecting sleeve 5 are mutually limited and fastened by the continuous steps 45, that is, the protecting sleeve is not pulled to two sides. The protective sleeve 4 and the protective sleeve 5 protect the elastic element 6 from the ingress of media which could corrode the elastic element 6. When installed, the protective sleeve 4 is connected to the housing.

The protective sleeve 5 is made of metal. Preferably, the iron and metal materials have easy deformation, and the elastic member 6 in the tensile elastic state and the elastic member 6 in the compression state are matched to deform, so that the static ring 2 is pulled or pushed to slightly move relative to the dynamic ring 1.

The elastic member 6 is a compression elastic member or a tension elastic member.

Specifically, as shown in fig. 1, firstly, an elastic element 6 in a tensile state is arranged between a protective sleeve 4 and a protective sleeve 5, two ends of the elastic element 6 are respectively buckled in two limiting grooves, at this time, a first dynamic sealing surface 71 abuts against a first static sealing surface 81 to form a sealing surface, when the sealing surface is seriously worn or the elasticity of the elastic element 6 is insufficient after the sealing surface is used for a period of time, so that the sealing effect is unstable, at this time, the mechanical sealing structure is disassembled to replace the elastic element 6 in the tensile state with the elastic element 6 in a compression state, and at this time, a second dynamic sealing surface 72 abuts against a second static sealing surface 82 to form a new sealing surface. In the process, when the sealing surface is seriously worn, the elastic part 6 is basically aged, or when the performance of the elastic part 6 is not improved, the sealing surface is damaged, and the two parts are basically synchronous in practical experiments, so that the elastic part 6 is selected to be replaced when the sealing effect is poor. The reason why the elastic member 6 in a stretched state is used first and then the elastic member 6 in a compressed state is that the second dynamic seal surface 72 and the second static seal surface 82 are not damaged by media when the first dynamic seal surface 71 and the first static seal surface 81 are used.

The problem that the service life of the existing mechanical sealing structure is short is effectively improved, the mechanical sealing structure is reasonable and simple in structural design, the elastic pieces 6 in different states are replaced, different sealing surfaces are used simultaneously, and the service life of the mechanical sealing structure is prolonged by one time.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides a mechanical seal structure, includes rotating ring (1), quiet ring (2) and is used for unable adjustment base (3) of fixed rotating ring (1), its characterized in that: the protective sleeve is characterized by further comprising a protective sleeve (4) and a protective sleeve (5), a first limiting groove (41) is formed in the inner side wall of the protective sleeve (4), the static ring (2) is arranged at one end, far away from the protective sleeve (4), of the protective sleeve (5), a second limiting groove (51) corresponding to the first limiting groove (41) is formed in the inner side of the end of the protective sleeve (5), an elastic piece (6) is arranged between the first limiting groove (41) and the second limiting groove (51), and two end portions of the elastic piece (6) are respectively arranged in the two limiting grooves; the movable ring (1) is provided with an annular bulge (7), two side walls of the bulge (7) are respectively a movable sealing surface I (71) and a movable sealing surface II (72), the stationary ring (2) is provided with a groove (8) corresponding to the bulge (7), and two side walls of the groove (8) are respectively a stationary sealing surface I (81) and a stationary sealing surface II (82).

2. A mechanical seal according to claim 1, wherein: the protective sleeve (4) and the protective sleeve (5) are both provided with continuous steps (45) which are buckled with each other, and the steps are provided with sealing rings (54).

3. A mechanical seal according to claim 1, wherein: the protective sleeve (5) is made of metal.

4. A mechanical seal according to claim 1, wherein: the elastic part (6) is a compression elastic part or a stretching elastic part.