CN218207812U

CN218207812U - Reusable mechanical seal

Info

Publication number: CN218207812U
Application number: CN202222775364.XU
Authority: CN
Inventors: 梁陈长生; 骆宝平
Original assignee: Shanghai Qingwei Environmental Technology Co ltd
Current assignee: Shanghai Qingwei Environmental Technology Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-01-03
Anticipated expiration: 2032-10-17

Abstract

The utility model discloses a repeatedly usable's mechanical seal is equipped with the quiet ring and the rotating ring that closely cooperate each other, and quiet ring two-sided symmetry is equipped with glossy static seal face, and rotating ring two-sided symmetry is equipped with glossy dynamic seal face, and dynamic seal face and static seal face all can mutually sealed the cooperation realize mechanical seal's sealing function, and when a sealed face is impaired, the accessible is changed sealed face quick recovery sealing function, has shortened mechanical seal maintenance cycle, has greatly improved mechanical seal's economic nature. The protective support has a supporting and positioning effect on the static ring, and simultaneously protects the unused static sealing surface of the static ring and protects the static sealing surface from contacting with other objects. The movable positioning pin and the movable positioning hole are matched with each other to position and limit the movable ring, the height of the movable positioning pin is larger than the depth of the movable positioning hole, the non-working movable sealing surface is not in contact with the mechanical movable main body, and the unused movable sealing surface is effectively protected.

Description

Reusable mechanical seal

Technical Field

The utility model relates to a mechanical seal technical field especially relates to a repeatedly usable's mechanical seal.

Background

The mechanical seal is also called an end face seal, and is defined by the following national relevant standards: the device for preventing fluid leakage is formed by at least one pair of end faces perpendicular to the rotation axis, which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal.

In the sanitary industry, the mechanical seal is usually made of silicon carbide, tungsten carbide, graphite or stainless steel, the contact surfaces of the moving ring and the static ring are polished to be smooth, and then the moving ring and the static ring are attached together and compressed to form the seal.

The mechanical seal has a certain service life in the use process, and loses the sealing effect due to abrasion, breakage and the like.

In practical applications, a reusable mechanical seal is needed, when the sealing surface is damaged, a perfect sealing surface can be exchanged for continuous use, and the economy of the mechanical seal can be improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a repeatedly usable's mechanical seal, mechanical seal quiet ring and rotating ring both sides all have the sealed face of symmetry, and the sealed face order around can trading when the sealed face of one side is impaired, and mechanical seal can continue to use, has improved mechanical seal's economic nature.

In order to achieve the above object, the utility model provides a following technical scheme:

the reusable mechanical seal comprises a static ring and a dynamic ring which are tightly matched with each other, wherein smooth static seal surfaces are symmetrically arranged on two surfaces of the static ring, smooth dynamic seal surfaces are symmetrically arranged on two surfaces of the dynamic ring, and the dynamic seal surfaces and the static seal surfaces can be in mutual seal matching.

As a further aspect of the present invention: the two sides of the static ring are uniformly and symmetrically provided with static positioning devices which can be matched and fixed with the static main body of the machine, and the two sides of the dynamic ring are uniformly and symmetrically provided with dynamic positioning devices which can be matched and fixed with the dynamic main body of the machine.

As a further aspect of the present invention: the static positioning device is a static positioning hole which is a blind hole, a static positioning pin is arranged at a corresponding position of the mechanical static main body, and the static positioning pin and the static positioning hole are matched with each other to position and limit the static ring; the movable positioning device is a movable positioning hole which is a blind hole, a movable positioning pin is arranged at the corresponding position of the mechanical movable main body, the movable positioning pin and the movable positioning hole are matched with each other to position and limit the movable ring, and the height of the movable positioning pin is greater than the depth of the movable positioning hole.

As a further aspect of the present invention: and one end of the static ring non-working static sealing surface is provided with a protection device which can protect the non-working static sealing surface in a matching way, and the protection device is respectively fixedly connected with the mechanical static main body and the static ring.

As a further aspect of the present invention: the protection device is an annular protection support, one side of the protection support is provided with a static positioning pin matched with the static positioning hole, and the other side of the protection support is provided with a side positioning groove matched and fixedly connected with the mechanical static main body.

As a further aspect of the present invention: the outer side of the static sealing surface is provided with a static ring main body, the static ring main body is provided with the static positioning hole, the middle part of the static ring main body is provided with a static sealing groove capable of being provided with a static sealing O-shaped ring, and the static sealing surface is opposite to the static ring main body in a protruding mode.

As a further aspect of the present invention: the movable sealing ring is characterized in that a movable ring main body is arranged on the inner side of the movable sealing surface, the movable ring main body is provided with the movable positioning hole, a movable sealing groove capable of being provided with a movable sealing O-shaped ring is arranged in the middle of the movable sealing surface main body, and the movable sealing surface is opposite to the movable ring main body and is arranged in a protruding mode.

As a further aspect of the present invention: and a wave washer is arranged on the connection surface of the protection support and the mechanical static main body.

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

1. repeatedly usable's mechanical seal is equipped with the quiet ring and the rotating ring that closely cooperate each other, and quiet ring bilateral symmetry is equipped with glossy quiet sealed face, and rotating ring bilateral symmetry is equipped with glossy dynamic seal face, and dynamic seal face and quiet sealed face all can be sealed mutually and cooperate and realize mechanical seal's sealing function, and when a sealed face is impaired, the accessible is changed sealed face and is resumeed sealing function fast, has shortened mechanical seal maintenance cycle, has greatly improved mechanical seal's economic nature.

2. One end of the static ring non-working static sealing surface is provided with an annular protection support which can protect the non-working static sealing surface in a matching way, the protection support is fixedly connected with the mechanical static main body and the static ring respectively, the protection support has a supporting and positioning effect on the static ring, and simultaneously protects the static sealing surface which is not used by the static ring and protects the static sealing surface from contacting with other objects.

3. The movable positioning pin and the movable positioning hole are matched with each other to position and limit the movable ring, the height of the movable positioning pin is larger than the depth of the movable positioning hole, the non-working movable sealing surface is not in contact with the mechanical movable main body, and the unused movable sealing surface is effectively protected.

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.

In the drawings:

fig. 1 is an exploded view of a reusable mechanical seal according to the present invention.

Fig. 2 is a cross-sectional view of the reusable mechanical seal installed on the machine body.

Fig. 3 is a partial enlarged view of a section a of a cross-sectional view of a reusable mechanical seal of the present invention.

Fig. 4 is a perspective view and a side view of a reusable mechanical seal stationary ring of the present invention.

Fig. 5 is a perspective view and a side view of a reusable mechanical seal protection holder of the present invention.

Fig. 6 is a perspective view and a side view of a reusable mechanical seal rotating ring of the present invention.

Notations for reference numerals: 1. a mechanical static body; 2. a mechanical moving body; 3. a stationary ring; 4. a moving ring; 5. a static seal face; 6. a dynamic sealing surface; 7. a protective support; 8. a wave washer; 9. moving the positioning pin; 31. a static locating hole; 32. a stationary ring body; 33. statically sealing an O-shaped ring; 34. a static seal groove; 41. moving the positioning hole; 42. a rotating ring main body; 43. dynamic sealing of an O-shaped ring; 44. a dynamic seal groove; 71. a static locating pin; 72. a side positioning groove;

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified in conjunction with the accompanying drawings as follows:

as shown in fig. 1-6:

the utility model provides a repeatedly usable's mechanical seal, is including the quiet ring 3 and the rotating ring 4 that closely cooperate each other, and 3 bilateral symmetry of quiet ring are equipped with glossy

static seal face

5, and 4 bilateral symmetry of rotating ring are equipped with glossy dynamic seal face 6, and dynamic seal face 6 and static seal face 5 all can be mutually sealed and cooperate. When one sealing surface is damaged, the sequence of the front sealing surface and the rear sealing surface can be changed, the mechanical seal can be continuously used, and the economy of the mechanical seal is improved.

The periphery of two sides of the static ring 3 is uniformly and symmetrically provided with static positioning devices which can be matched and fixed with the static main body 1 of the machine, and the periphery of two sides of the dynamic ring 4 is uniformly and symmetrically provided with dynamic positioning devices which can be matched and fixed with the dynamic main body 2 of the machine. The two sides of the static ring 3 and the dynamic ring 4 are symmetrical, so that double-side replacement and use can be realized.

The static positioning device is a static positioning hole 31, the static positioning hole 31 is a blind hole, a static positioning pin 71 is arranged at a corresponding position of the mechanical static main body 1, and the static positioning pin 71 is matched with the static positioning hole 31 to position and limit the static ring 3; the movable positioning device is a movable positioning hole 41, the movable positioning hole 41 is a blind hole, a movable positioning pin 9 is arranged at a corresponding position of the mechanical movable main body 2, the movable positioning pin 9 and the movable positioning hole 41 are matched with each other to position and limit the movable ring 4, the height of the movable positioning pin 9 is larger than the depth of the movable positioning hole 41, the movable sealing surface 6 is not contacted with the mechanical movable main body 2, and the non-working movable sealing surface 6 can be effectively protected.

In order to protect the non-working static sealing surface 5, one end of the non-working static sealing surface 5 of the static ring 3 is provided with a protection device which can protect the non-working static sealing surface 5, and the protection device is respectively and fixedly connected with the mechanical static main body 1 and the static ring 3.

Preferably, the protection device is an annular protection support 7, one side of the protection support 7 is provided with a static positioning pin 71 matched with the static positioning hole 31, and the other side of the protection support 7 is provided with a side positioning groove 72 matched and fixedly connected with the mechanical static main body 1.

It should be noted that the protection bracket 7 has a function of stabilizing a part of the mechanical stationary body 1 as an intermediate protection device, and the stationary positioning pin 71 may be provided on a surface of the protection bracket 7.

Specifically, a static ring main body 32 is arranged on the outer side of the static sealing surface 5, a static positioning hole 31 is formed in the static ring main body 32, a static sealing groove 34 capable of being provided with a static sealing O-shaped ring 33 is formed in the middle of the static ring main body 32, the static sealing O-shaped ring 33 has a sealing effect, and the static sealing surface 5 is arranged in a protruding mode relative to the static ring main body 32.

The inner side of the dynamic sealing surface 6 is provided with a dynamic ring main body 42, the dynamic ring main body 42 is provided with a dynamic positioning hole 41, the middle part of the dynamic sealing surface 6 main body is provided with a dynamic sealing groove 44 capable of being provided with a dynamic sealing O-shaped ring 43, the dynamic sealing O-shaped ring 43 has a sealing effect, and the dynamic sealing surface 6 is arranged in a protruding mode relative to the dynamic ring main body 42.

The connection surface of the protection support 7 and the mechanical static body 1 is provided with a wave washer 8. During installation, the wave washer 8 is compressed, so that the static ring 3 and the dynamic ring 4 are pressed tightly, and the smooth sealing surfaces are in tight contact.

In practical application:

repeatedly usable's mechanical seal is equipped with the quiet ring 3 and the rotating ring 4 that closely cooperate each other, 3 bilateral symmetry of quiet ring is equipped with glossy

static seal face

5, 4 bilateral symmetry of rotating ring are equipped with glossy dynamic seal face 6, dynamic seal face 6 and static seal face 5 all can be sealed mutually and cooperate the sealing function who realizes mechanical seal, when the sealed face of one side is impaired, the accessible is changed sealed face and is resumeed sealing function fast, mechanical seal maintenance cycle has been shortened, mechanical seal's economic nature has greatly been improved, mechanical seal repeatedly usable has been realized.

The non-working static sealing surface 5 of the static ring 3 is provided with an annular protective support 7 which can protect the non-working static sealing surface 5 in a matching way, the protective support 7 is fixedly connected with the static main body 1 and the static ring 3 of the machine respectively, the protective support 7 has a supporting and positioning effect on the static ring 3, and simultaneously protects the static sealing surface 5 which is not used by the static ring 3 and protects the static sealing surface 5 from contacting with other objects.

The movable positioning pin 9 and the movable positioning hole 41 are matched with each other to position and limit the movable ring 4, the height of the movable positioning pin 9 is larger than the depth of the movable positioning hole 41, the non-working movable sealing surface 6 is not contacted with the mechanical movable main body 2, and the unused movable sealing surface 6 is effectively protected.

The sealing O-shaped ring has a sealing effect on the movable ring 4 and the static ring 3, the sealing performance of mechanical sealing is improved, and the movable ring 4 and the static ring 3 are effectively protected.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the present disclosure in the specification and examples. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A reusable mechanical seal comprising a stationary ring (3) and a moving ring (4) which are in close fit with each other, characterized in that: smooth static sealing surfaces (5) are symmetrically arranged on two sides of the static ring (3), smooth dynamic sealing surfaces (6) are symmetrically arranged on two sides of the dynamic ring (4), and the dynamic sealing surfaces (6) and the static sealing surfaces (5) can be in sealing fit with each other.

2. A reusable mechanical seal, according to claim 1, characterized in that: the two sides of the static ring (3) are uniformly and symmetrically provided with static positioning devices which can be matched and fixed with the mechanical static main body (1), and the two sides of the dynamic ring (4) are uniformly and symmetrically provided with dynamic positioning devices which can be matched and fixed with the mechanical dynamic main body (2).

3. A reusable mechanical seal, according to claim 2, characterized in that: the static positioning device is a static positioning hole (31), the static positioning hole (31) is a blind hole, a static positioning pin (71) is arranged at the corresponding position of the mechanical static main body (1), and the static positioning pin (71) and the static positioning hole (31) are matched with each other to position and limit the static ring (3); the movable positioning device is a movable positioning hole (41), the movable positioning hole (41) is a blind hole, a movable positioning pin (9) is arranged at the corresponding position of the mechanical movable main body (2), the movable positioning pin (9) and the movable positioning hole (41) are matched with each other to position and limit the movable ring (4), and the height of the movable positioning pin (9) is larger than the depth of the movable positioning hole (41).

4. A reusable mechanical seal according to claim 3 wherein: and one end of the static ring (3) non-working static sealing surface (5) is provided with a protection device which can protect the non-working static sealing surface (5) in a matching way, and the protection device is fixedly connected with the static mechanical main body (1) and the static ring (3) respectively.

5. A reusable mechanical seal according to claim 4 wherein: the protection device is an annular protection support (7), one side of the protection support (7) is provided with a static positioning pin (71) matched with the static positioning hole (31), and the other side of the protection support (7) is provided with a side positioning groove (72) fixedly connected with the mechanical static main body (1) in a matched manner.

6. A reusable mechanical seal according to claim 5, wherein: quiet sealing face (5) outside is equipped with quiet ring main part (32), quiet ring main part (32) are equipped with quiet locating hole (31), quiet ring main part (32) middle part is equipped with quiet seal groove (34) that can set up quiet sealing O type circle (33), quiet sealing face (5) are relative quiet ring main part (32) salient sets up.

7. A reusable mechanical seal according to claim 6 wherein: move sealed face (6) inboard and be equipped with rotating ring main part (42), rotating ring main part (42) are equipped with move locating hole (41), it can set up the dynamic seal groove (44) of dynamic seal O type circle (43) to move sealed face (6) main part middle part, it is relative to move sealed face (6) rotating ring main part (42) salient sets up.

8. A reusable mechanical seal according to claim 7, wherein: and a wave washer (8) is arranged on the connection surface of the protection support (7) and the mechanical static main body (1).