CN212745050U

CN212745050U - Low-temperature-resistant mechanical seal

Info

Publication number: CN212745050U
Application number: CN202021493114.1U
Authority: CN
Inventors: 董家稳; 马晶俊
Original assignee: Jiashan Lantian Mechanical Seal Co ltd
Current assignee: Jiashan Lantian Mechanical Seal Co ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2021-03-19
Anticipated expiration: 2030-07-24

Abstract

The utility model relates to a continue sealed technical field, aim at providing a low temperature resistant mechanical seal, its technical scheme main points are including the rotating ring seat, the rotating ring, with quiet ring, the ring chamber that is used for placing quiet ring is offered to quiet ring seat circumference inner wall, a plurality of spread grooves have been seted up to the bottom in ring chamber, be provided with the spring in the spread groove, the other end fixedly connected with throw-out collar of spring, another surface of throw-out collar is supported tightly in the terminal surface of rotating ring, the rotating ring has the butt ring towards the terminal surface integrated into one piece of quiet ring, another tip of butt ring is supported tightly in quiet ring, the diameter of butt ring is less than the diameter of rotating ring, quiet ring, rotating ring and butt ring are made by graphite. The utility model discloses can normally work under low temperature environment, guarantee its sealed effect.

Description

Low-temperature-resistant mechanical seal

Technical Field

The utility model relates to a mechanical seal technical field, more specifically say, it relates to a low temperature resistant mechanical seal.

Background

At present, a known mechanical sealing device mainly comprises a movable ring, a stationary ring, a spring, an auxiliary sealing ring and a transmission part, wherein the movable ring and the stationary ring are completely attached by taking a stationary ring surface as a reference under the action of the spring and medium pressure, a liquid film is generated on the end surface under the action of the medium pressure, the movable ring and the stationary ring play roles of lubricating and cooling when moving relatively, and the abrasion loss of a friction pair of the movable ring and the stationary ring is controlled within a small range, so that the long-term sealing effect is achieved.

According to the technical scheme, the liquid film between the end faces cannot be formed in the ultralow temperature state, so that the end faces of the mechanical seal are in a dry friction state, the service life of the mechanical seal is influenced, and the long-term sealing requirement cannot be met.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a low temperature resistant mechanical seal.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a low temperature resistant mechanical seal, including the rotating ring seat, the rotating ring, with quiet ring, the ring chamber that is used for placing quiet ring is offered to quiet ring seat circumference inner wall, a plurality of spread grooves have been seted up to the bottom in ring chamber, be provided with the spring in the spread groove, the other end fixedly connected with throw-out collar of spring, another surface of throw-out collar supports the terminal surface tightly in the rotating ring, the rotating ring has the butt ring towards the terminal surface integrated into one piece of quiet ring, another tip of butt ring supports tightly in quiet ring, the diameter of butt ring is less than the diameter of rotating ring, quiet ring, rotating ring and butt ring are made by graphite.

Through adopting above-mentioned technical scheme, thrust through the spring, make the one end of rotating ring support tightly in the one end of quiet ring, because rotating ring and quiet ring are made by graphite, frictional force between the it has been reduced greatly, even under the ultra-low temperature environment, the rotating ring still can be for the smooth and easy rotation of quiet ring, greatly reduced the wearing and tearing between it, its life and sealed effect have effectively been promoted, and through setting up the butt ring, further reduce the area of contact between rotating ring and the quiet ring, further reduce the friction that produces between it, wear and tear under long-time operating condition with the quiet ring is further reduced, further its life has been promoted, and graphite has better low temperature resistance, still can keep the temperature under the ultra-low temperature state.

The utility model discloses further set up to: the inner wall of the movable ring, which is positioned at one end of the push ring, is provided with an annular groove, and a sealing ring is arranged in the annular groove.

Through adopting above-mentioned technical scheme, through setting up the sealing washer, further promote the sealed effect of the device.

The utility model discloses further set up to: the outer side wall of the movable ring on one side of the push ring is integrally formed with an annular sliding portion, the circumferential side wall of the sliding portion is connected with the inner wall of the circular ring cavity in a sliding mode, and the circumferential inner wall of the circular ring cavity is located on the outer side of the sliding portion and fixedly connected with a limiting ring.

Through adopting above-mentioned technical scheme, through setting up the spacing ring to carry out spacingly to the position of rotating ring along the axial direction, avoid its and the rotating ring seat to take place the phenomenon of breaking away from.

The utility model discloses further set up to: the movable ring seat is made of ultralow-temperature steel.

By adopting the technical scheme, the low-temperature resistance of the mechanical seal is further improved.

The utility model discloses further set up to: and a through groove penetrating through the end part of the movable ring seat is formed in the inner wall of the end part of the connecting groove.

Through adopting above-mentioned technical scheme, the logical groove of seting up makes the inside of rotating ring seat and external environment can produce the heat exchange, reduces the influence that low temperature produced it.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic cross-sectional structure diagram of the rotating ring.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 3.

The utility model provides a low temperature resistant mechanical seal, including rotating ring seat 1, rotating ring 2, with

quiet ring

3, 3 circumference inner walls of quiet ring offer the ring chamber 4 that is used for placing quiet ring 3, a plurality of spread grooves 5 have been seted up to the bottom in ring chamber 4, be provided with spring 6 in the spread groove 5, spring 6's other end fixedly connected with throw-out collar 7, another surface of throw-out collar 7 supports tightly in the terminal surface of rotating ring 2, rotating ring 2 has butt ring 8 towards the terminal surface integrated into one piece of quiet ring 3, another tip of butt ring 8 supports tightly in quiet ring 3, the diameter of butt ring 8 is less than the diameter of rotating ring 2, quiet ring 3, rotating ring 2 and butt ring 8 are made by graphite.

Through the thrust of spring 6, make the one end of rotating ring 2 support tightly in the one end of quiet ring 3, because rotating ring 2 and quiet ring 3 are made by graphite, frictional force between the greatly reduced, even under the ultra-low temperature environment, rotating ring 2 still can be for the smooth and easy rotation of quiet ring 3, greatly reduced the wearing and tearing between it, its life and sealed effect have effectively been promoted, and through setting up butt ring 8, further reduce the area of contact between rotating ring 2 and the quiet ring 3, further reduce the friction that produces between it, in order to further reduce the wearing and tearing of rotating ring 2 and quiet ring 3 under long-time operating condition, further promote its life, and graphite has better low temperature resistance, still can keep the temperature under the ultra-low temperature state.

The inner wall of the movable ring 2 at one end of the push ring 7 is provided with an annular groove 9, a sealing ring 10 is arranged in the annular groove 9, and the sealing effect of the device is further improved by arranging the sealing ring 10.

The lateral wall integrated into one piece that the rotating ring 2 is located push ring 7 one side has annular sliding part 11, and the circumference lateral wall sliding connection of sliding part 11 is in the inner wall of ring chamber 4, and the circumference inner wall of ring chamber 4 is located the outside fixedly connected with spacing ring 12 of sliding part 11 to carry out spacingly to the position of rotating ring 2 along the axial direction, avoid its and the phenomenon that the rotating ring 2 seat 1 takes place to break away from.

The movable ring seat 1 is made of ultralow temperature steel, and the low temperature resistance of the mechanical seal is further improved.

The through groove 13 that runs through in the end of the movable ring 2 seat 1 is seted up to the tip inner wall of spread groove 5, and the logical groove 13 of seting up makes the inside of movable ring 2 seat 1 and external environment can produce the heat exchange, reduces the influence that low temperature produced it.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and the ordinary changes and replacements performed by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a low temperature resistant mechanical seal, includes rotating ring seat, rotating ring and quiet ring, characterized by: the ring chamber that is used for placing quiet ring is offered to quiet ring seat circumference inner wall, and a plurality of spread grooves have been offered to the bottom in ring chamber, are provided with the spring in the spread groove, and the other end fixedly connected with throw-out collar of spring, another surface of throw-out collar support tightly in the terminal surface of rotating ring, and rotating ring towards the terminal surface integrated into one piece of quiet ring has the butt ring, and another tip of butt ring supports tightly in quiet ring, and the diameter of butt ring is less than the diameter of rotating ring, and quiet ring, rotating ring and butt ring are made by graphite.

2. A low temperature resistant mechanical seal as claimed in claim 1, wherein: the inner wall of the movable ring, which is positioned at one end of the push ring, is provided with an annular groove, and a sealing ring is arranged in the annular groove.

3. A low temperature resistant mechanical seal as claimed in claim 2, wherein: the outer side wall of the movable ring on one side of the push ring is integrally formed with an annular sliding portion, the circumferential side wall of the sliding portion is connected with the inner wall of the circular ring cavity in a sliding mode, and the circumferential inner wall of the circular ring cavity is located on the outer side of the sliding portion and fixedly connected with a limiting ring.

4. A low temperature resistant mechanical seal as claimed in claim 3, wherein: the movable ring seat is made of ultralow-temperature steel.

5. A low temperature resistant mechanical seal as claimed in claim 4, wherein: and a through groove penetrating through the end part of the movable ring seat is formed in the inner wall of the end part of the connecting groove.