CN215567935U - Double-end-face mechanical sealing element - Google Patents
Double-end-face mechanical sealing element Download PDFInfo
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- CN215567935U CN215567935U CN202121888016.2U CN202121888016U CN215567935U CN 215567935 U CN215567935 U CN 215567935U CN 202121888016 U CN202121888016 U CN 202121888016U CN 215567935 U CN215567935 U CN 215567935U
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Abstract
The utility model relates to the technical field of mechanical seal, and discloses a double-end-face mechanical seal, which comprises: the rotating shaft, the shell and the cover body are connected; the shell and the cover body surround to form an accommodating cavity, and a first static ring and a second static ring are respectively arranged on the accommodating cavity; the rubber corrugated pipe is sleeved on the rotating shaft, is positioned in the accommodating cavity and is positioned between the first static ring and the second static ring; the first movable ring is connected with the first static ring, and the second movable ring is connected with the second static ring; the elastic piece is sleeved on the rubber corrugated pipe and arranged between the first extending end and the second extending end and used for driving the first movable ring to be connected with the first static ring and driving the second movable ring to be connected with the second static ring. Through the same rubber corrugated pipe shaft-holding transmission, the gap between transmission structures is eliminated, and the transmission efficiency is improved; the floating property of the spiral spring can enable the pressure at two ends to be consistent all the time, has a certain compensation effect, and can prolong the service life of the mechanical sealing element.
Description
Technical Field
The utility model relates to the technical field of mechanical sealing, in particular to a double-end-face mechanical sealing element.
Background
Mechanical seals are widely used in pumps, compressors, and mixing machines. The leakage path between a rotating part (such as a shaft) and a static structure cavity is cut off, and harmful media in the cavity are prevented from leaking to the outside. The mechanical seal is typically comprised of a moving component fixed to the shaft and a stationary component fixed to the housing.
The traditional double-end-face mechanical sealing element is composed of a plurality of components, each component is required to be sequentially arranged at a respective working position, and a gap is generated between transmission structures, so that the transmission efficiency is influenced; the disassembly and assembly process is complicated and difficult, and the conditions such as looseness and the like are easy to occur after the installation is finished, so that the fixing effect is poor; the pressure on two end faces of the traditional double-end-face mechanical sealing element is inconsistent, so that the end with higher pressure generates larger friction torque, the ring surface is lost, and the service life of the mechanical sealing element is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the foregoing problems, and it is an object of the present invention to provide a double mechanical seal which can improve transmission efficiency and can increase the service life of the mechanical seal.
To achieve the above object, the present invention provides a double mechanical seal comprising:
a rotating shaft;
the rotating shaft is rotatably arranged in the accommodating cavity in a penetrating mode, a first static ring is arranged in the shell, and a second static ring is arranged in the cover body;
the rubber corrugated pipe is sleeved on the rotating shaft, is positioned in the accommodating cavity and is positioned between the first static ring and the second static ring; a first extending end and a second extending end are respectively arranged at two ends of the rubber corrugated pipe;
the first movable ring and the second movable ring are respectively arranged on the first extending end and the second extending end, the first movable ring is connected with the first static ring, and the second movable ring is connected with the second static ring;
the elastic piece is sleeved on the rubber corrugated pipe and arranged between the first extending end and the second extending end and used for driving the first movable ring to be connected with the first static ring and driving the second movable ring to be connected with the second static ring.
According to the double-end-face mechanical sealing element, the rubber corrugated pipe is provided with the annular groove, and the fastening ring is sleeved in the annular groove.
According to the double-end-face mechanical sealing element, the rubber corrugated pipe is further provided with a first movable ring seat and a second movable ring seat, and the first movable ring seat and the second movable ring seat are Z-shaped; one end of the first movable ring seat and one end of the second movable ring seat are both positioned in the annular groove and sleeved on the fastening ring, and one end of the first movable ring seat, which is far away from the fastening ring, and one end of the second movable ring seat, which is far away from the fastening ring, are respectively connected with the first extending end and the second extending end;
the elastic piece is set to be a spiral spring, and the spiral spring is arranged between the first movable ring seat and the second movable ring seat.
According to the double-end-face mechanical sealing element, the first movable ring is connected with the inner side of the first extending end, and one end, away from the fastening ring, of the first movable ring seat is connected with the outer side of the first extending end; the second movable ring is connected with the inner side of the second extending end, and one end, far away from the fastening ring, of the second movable ring seat is connected with the outer side of the second extending end.
According to the double-end-face mechanical sealing element, one end, close to the fastening ring, of the first movable ring seat and one end, close to the fastening ring, of the second movable ring seat are both provided with pressing blocks, a notch is formed in the fastening ring, and the pressing blocks are arranged in the notch.
According to a double mechanical seal spare, be equipped with first leather cup in the casing, be equipped with the second leather cup in the lid, first quiet ring with first leather cup meets, the quiet ring of second with the second leather cup meets.
According to the double-end-face mechanical sealing element, one end of the cover body is in threaded connection with one end of the shell body.
According to the double-end-face mechanical sealing element, the shell is further provided with an opening, and the opening is communicated with the accommodating cavity.
According to the double-end-face mechanical sealing element, the cover body and the shell are both provided with the sealing rings.
The utility model has the following beneficial effects:
1. the spiral spring pushes the first movable ring seat and the second movable ring seat to move, so that the first movable ring can be attached to the first static ring, and the second movable ring can be attached to the second static ring; the spiral spring increases the floatability of the mechanical sealing element, when one end is excessively worn, the pressure at two ends can be always consistent by utilizing the floatability of the spiral spring, a certain compensation effect is achieved, and the service life of the mechanical sealing element can be prolonged;
2. the first movable ring seat and the second movable ring seat are driven to rotate by the same rubber corrugated pipe, so that the gap between transmission structures is eliminated, and the transmission efficiency is improved;
3. the shell is provided with an opening which has a certain cooling effect and can reduce the weight of the mechanical sealing element;
4. the rubber corrugated pipe is sleeved on the rotating shaft, and the rotating shaft drives the rubber corrugated pipe to rotate by utilizing the friction force between the rubber corrugated pipe and the rotating shaft, so that the surface of the rotating shaft cannot be damaged.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
in the figure: 100. a rotating shaft; 200. a housing; 210. a first stationary ring; 220. a first leather cup; 230. an opening; 240. a seal ring; 300. a cover body; 310. a second stationary ring; 320. a second leather cup; 400. a rubber bellows; 410. a first protruding end; 420. a second protruding end; 430. an annular groove; 431. a fastening ring; 440. a first movable ring seat; 441. briquetting; 450. a second movable ring seat; 510. a first rotating ring; 520. a second rotating ring; 600. an elastic member; 610. a coil spring.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-2, a double mechanical seal, comprising:
the rotating shaft 100 is rotatably arranged in the accommodating cavity in a penetrating way, a first stationary ring 210 is arranged in the casing 200, and a second stationary ring 310 is arranged in the cover body 300; the rubber corrugated pipe 400 is sleeved on the rotating shaft 100, and the rubber corrugated pipe 400 is positioned in the accommodating cavity and is positioned between the first stationary ring 210 and the second stationary ring 310; the two ends of the rubber bellows 400 are respectively provided with a first extending end 410 and a second extending end 420; the first rotating ring 510 and the second rotating ring 520 are respectively arranged on the first extending end 410 and the second extending end 420, the first rotating ring 510 is connected with the first stationary ring 210, and the second rotating ring 520 is connected with the second stationary ring 310; it should be noted that, the housing 200, the cover 300, the first stationary ring 210 and the second stationary ring 310 are stationary, the rubber bellows 400, the first movable ring 510 and the second movable ring 520 rotate along with the rotating shaft 100, the first stationary ring 210 and the first movable ring 510 can be attached to each other, the second stationary ring 310 and the second movable ring 520 can be attached to each other to form a sealing surface, and the clearance during relative rotation is on the order of micrometers, which can effectively prevent the internal fluid from leaking from the sealing surface. The elastic member 600, the elastic member 600 is sleeved on the rubber bellows 400, and the elastic member 600 is disposed between the first extending end 410 and the second extending end 420, for driving the first rotating ring 510 to be connected to the first stationary ring 210, and simultaneously driving the second rotating ring 520 to be connected to the second stationary ring 310. Compare with traditional double mechanical seal, drive whole mechanical seal through rubber bellows 400 and rotate, can eliminate the clearance between each transmission structure, moreover, the steam generator is compact in structure, transmission efficiency is higher, and adopt same elastic component 600 to order about first rotating ring 510 and first quiet ring 210 to meet, order about second rotating ring 520 and second quiet ring 310 to meet simultaneously, mechanical seal's floatability has been increased, when one end wearing and tearing are excessive, utilize elastic component 600's floatability, can make both ends pressure unanimous all the time, certain compensation effect has, mechanical seal's life can be improved.
The rubber corrugated pipe 400 is provided with an annular groove 430, the fastening ring 431 is sleeved in the annular groove 430, the rubber corrugated pipe 400 is sleeved on the rotating shaft 100, the rotating shaft 100 drives the rubber corrugated pipe 400 to rotate by utilizing the friction force between the rubber corrugated pipe 400 and the rotating shaft 100, and the surface of the rotating shaft 100 cannot be damaged; the fastening ring 431 may further fix the position of the rubber bellows 400, ensuring that the rubber bellows 400 rotates along with the rotation shaft 100.
The rubber corrugated pipe 400 is further provided with a first movable ring seat 440 and a second movable ring seat 450, and the first movable ring seat 440 and the second movable ring seat 450 are Z-shaped; one end of the first moving ring seat 440 and one end of the second moving ring seat 450 are both located in the annular groove 430 and are sleeved on the fastening ring 431, and one end of the first moving ring seat 440, which is far away from the fastening ring 431, and one end of the second moving ring seat 450, which is far away from the fastening ring 431, are respectively connected with the first protruding end 410 and the second protruding end 420; compared with the traditional double-end-face mechanical sealing element, the first moving ring seat 440 and the second moving ring seat 450 are driven to rotate by the same rubber corrugated pipe 400, so that the gap between transmission structures is eliminated, and the transmission efficiency is improved.
The elastic member 600 is provided as a coil spring 610, and the coil spring 610 is disposed between the first moving ring seat 440 and the second moving ring seat 450; the coil spring 610 is installed between the first moving ring seat 440 and the second moving ring seat 450, and the coil spring 610 can make the first moving ring 510 and the first stationary ring 210 attach to each other and make the second moving ring 520 and the second stationary ring 310 attach to each other by pushing the first moving ring seat 440 and the second moving ring seat 450 to move; the spiral spring 610 increases the floatability of the mechanical sealing element, when one end is excessively worn, the pressure at two ends can be consistent all the time by utilizing the floatability of the spiral spring 610, a certain compensation effect is achieved, and the service life of the mechanical sealing element can be prolonged.
The first rotating ring 510 is connected with the inner side of the first extending end 410, and one end of the first rotating ring seat 440 far away from the fastening ring 431 is connected with the outer side of the first extending end 410; the second rotating ring 520 is connected to the inner side of the second protruding end 420, and the end of the second rotating ring seat 450 away from the fastening ring 431 is connected to the outer side of the second protruding end 420, which makes the structure of the mechanical seal more compact.
The pressing blocks 441 are arranged at one end, close to the fastening ring 431, of the first movable ring seat 440 and one end, close to the fastening ring 431, of the second movable ring seat 450, the fastening ring 431 is provided with a notch, and the pressing blocks 441 are arranged in the notches, so that the first movable ring seat 440 and the second movable ring seat 450 can rotate together along with the rubber corrugated pipe 400.
A first leather cup 220 is arranged in the shell 200, a second leather cup 320 is arranged in the cover body 300, the first stationary ring 210 is connected with the first leather cup 220, and the second stationary ring 310 is connected with the second leather cup 320; the first cup 220 ensures the sealing performance of the joint of the housing 200 and the first stationary ring 210, and the second cup 320 ensures the sealing performance of the joint of the cover 300 and the second cup 320.
One end of the cover 300 is threadedly coupled to one end of the housing 200, and the cover 300 and the housing 200 are threadedly coupled, thereby simplifying the installation process.
The housing 200 is further provided with an opening 230, the opening 230 is communicated with the accommodating cavity, and the opening 230 has a certain cooling effect and can reduce the weight of the mechanical sealing element.
The cover body 300 and the shell body 200 are both provided with a sealing ring 240, and the sealing rings 240 arranged on the cover body 300 and the shell body 200 can ensure the sealing performance of the connection part when the mechanical sealing element is arranged at the working position.
The installation process of this embodiment is as follows: the first stationary ring 210 is mounted inside the casing 200 through the first cup 220, and the second stationary ring 310 is mounted inside the cover 300 through the second cup 320; after the first movable ring 510, the second movable ring 520, the first movable ring seat 440, the second movable ring seat 450, the fastening ring 431 and the coil spring 610 are sequentially mounted on the rubber bellows 400, they are placed in the housing 200, then the cover 300 is screwed on the housing 200, the sealing rings 240 are mounted on both the housing 200 and the cover 300, and finally they are pushed into the working position of the rotating shaft 100 for fixing.
The utility model provides a double-end-face mechanical sealing element, wherein a shell 200 and a cover body 300 are connected and combined to form an accommodating cavity, a rubber corrugated pipe 400 is sleeved on a rotating shaft 100 and is positioned in the accommodating cavity, a first movable ring seat 440 and a second movable ring seat 450 are arranged on the rubber corrugated pipe 400, and a spiral spring 610 is arranged between the first movable ring seat 440 and the second movable ring seat 450; the first stationary ring 210 and the second stationary ring 310 are respectively installed on the inner sides of the housing 200 and the cover 300 through the first leather cup 220 and the second leather cup 320; the first rotating ring 510 and the second rotating ring 520 are respectively installed at two ends of the rubber bellows 400, and the first rotating ring seat 440 and the second rotating ring seat 450 can be pushed to move by the coil spring 610, so as to drive the first rotating ring 510 to be connected with the first stationary ring 210, and simultaneously drive the second rotating ring 520 to be connected with the second stationary ring 310. The first moving ring seat 440 and the second moving ring seat 450 are driven to rotate by the same rubber corrugated pipe 400, so that the gap between transmission structures is eliminated, and the transmission efficiency is improved; the arrangement of the spiral spring 610 increases the floatability, when one end is excessively worn, the pressure at two ends can be consistent all the time by utilizing the floatability of the spiral spring 610, a certain compensation effect is achieved, and the service life of the mechanical sealing element can be prolonged.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (9)
1. A double mechanical seal, comprising:
a rotating shaft;
the rotating shaft is rotatably arranged in the accommodating cavity in a penetrating mode, a first static ring is arranged in the shell, and a second static ring is arranged in the cover body;
the rubber corrugated pipe is sleeved on the rotating shaft, is positioned in the accommodating cavity and is positioned between the first static ring and the second static ring; a first extending end and a second extending end are respectively arranged at two ends of the rubber corrugated pipe;
the first movable ring and the second movable ring are respectively arranged on the first extending end and the second extending end, the first movable ring is connected with the first static ring, and the second movable ring is connected with the second static ring;
the elastic piece is sleeved on the rubber corrugated pipe and arranged between the first extending end and the second extending end and used for driving the first movable ring to be connected with the first static ring and driving the second movable ring to be connected with the second static ring.
2. A double mechanical seal according to claim 1, wherein said rubber bellows is provided with an annular groove in which a fastening ring is fitted.
3. The double mechanical seal according to claim 2, wherein the rubber bellows is further provided with a first movable ring seat and a second movable ring seat, and the first movable ring seat and the second movable ring seat are Z-shaped; one end of the first movable ring seat and one end of the second movable ring seat are both positioned in the annular groove and sleeved on the fastening ring, and one end of the first movable ring seat, which is far away from the fastening ring, and one end of the second movable ring seat, which is far away from the fastening ring, are respectively connected with the first extending end and the second extending end;
the elastic piece is set to be a spiral spring, and the spiral spring is arranged between the first movable ring seat and the second movable ring seat.
4. A double mechanical seal according to claim 3, wherein said first rotating ring is attached to an inner side of said first protruding end, and an end of said first rotating ring base remote from said fastening ring is attached to an outer side of said first protruding end; the second movable ring is connected with the inner side of the second extending end, and one end, far away from the fastening ring, of the second movable ring seat is connected with the outer side of the second extending end.
5. A double mechanical seal according to claim 3, wherein a pressing piece is provided on each of an end of the first movable ring seat adjacent to the fastening ring and an end of the second movable ring seat adjacent to the fastening ring, and a notch is provided on the fastening ring, and the pressing piece is provided in the notch.
6. A double mechanical seal according to claim 1 wherein a first cup is provided in said housing and a second cup is provided in said cover, said first stationary ring being attached to said first cup and said second stationary ring being attached to said second cup.
7. A double mechanical seal according to claim 1, wherein an end of said cap is threadably connected to an end of said housing.
8. A double mechanical seal according to claim 1, wherein said housing further comprises an opening therein, said opening communicating with said receiving cavity.
9. A double mechanical seal according to claim 1, wherein said cover and said housing are provided with sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121888016.2U CN215567935U (en) | 2021-08-12 | 2021-08-12 | Double-end-face mechanical sealing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121888016.2U CN215567935U (en) | 2021-08-12 | 2021-08-12 | Double-end-face mechanical sealing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567935U true CN215567935U (en) | 2022-01-18 |
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ID=79835187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121888016.2U Active CN215567935U (en) | 2021-08-12 | 2021-08-12 | Double-end-face mechanical sealing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567935U (en) |
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2021
- 2021-08-12 CN CN202121888016.2U patent/CN215567935U/en active Active
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