CN215763293U - Floating mechanical sealing device - Google Patents
Floating mechanical sealing device Download PDFInfo
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- CN215763293U CN215763293U CN202122348973.2U CN202122348973U CN215763293U CN 215763293 U CN215763293 U CN 215763293U CN 202122348973 U CN202122348973 U CN 202122348973U CN 215763293 U CN215763293 U CN 215763293U
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- ring
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- floating
- ring seat
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Abstract
The utility model belongs to the field of mechanical sealing, and relates to a mechanical sealing structure suitable for working conditions of media containing particles and the like. Mainly aiming at the standard sealed cavity, the sealing adaptability is required to be strong and the standard seal can be exchanged. The sealing compensation piece is a wave spring, and when the sealing compensation piece works, the auxiliary sealing ring isolates a medium from the wave spring, so that the effective work of the spring is ensured. The moving ring and the static ring adopt hard friction pairs, the size of the friction pairs is the same, and the friction pairs and the ring seat adopt a floating structure. The friction pair and the ring seat are arranged at the axial position in a sealing mode, the joint sealing is kept by spring force and medium pressure, the excircle groove and the ring seat lug are matched to transmit torque, the whole friction pair is not deformed, and the stability of sealing operation is improved.
Description
Technical Field
The utility model belongs to the technical field of mechanical sealing, and particularly provides a floating type mechanical sealing device.
Background
For mechanical sealing under the working condition of media containing particles and the like, a single-spring common type sealing and a spring protection type sealing are generally adopted, and a spring protection type structure is more consistent with the actual working condition. The wave spring protection type structure is widely used, the moving ring assembly in practical application is of an inlaid structure, aging treatment is improper, the problem of deformation of a friction pair often occurs, sealing leakage is caused, and the phenomenon of cracking of the friction pair is easy to occur. The friction pair is designed into a floating structure, so that the problem of embedding deformation is solved, and the key for improving the standard type sealing stability is realized.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a float-type mechanical seal device, comprising,
the transmission seat 1 is provided with a fastening screw 2 in the radial direction and is tightly pressed and fixed on the shaft; a sealing ring A3 is arranged on the inner side of the transmission seat 1 and the shaft in the radial direction;
the part of the movable ring seat 4, which is close to the medium side in the axial direction, is positioned at the periphery of the transmission seat 1; a cylindrical hole A is formed in the movable ring seat 4, and a cylindrical hole B is formed in the transmission seat 1 opposite to the through hole in a matching mode; the cylindrical hole A and the cylindrical hole B are provided with an anti-rotation pin 5 for connecting the transmission seat 1 and the movable ring seat 4; the inner diameter of the part of the movable ring seat 4 close to the atmosphere side is provided with a circle of protrusion 6, the protrusion 6 surrounds the outside of the shaft, and a space is arranged between the protrusion 6 and the atmosphere side end part of the transmission seat 1, and a wave spring 7 is arranged in the space;
the periphery of the atmospheric side end part of the movable ring seat 4 is axially protruded with a retainer ring A8, a floating ring A9 is arranged in a space formed by the retainer ring A8 and a shaft, and the outer edge of the retainer ring A8 is bent to prevent the floating ring from falling off before installation;
the stationary ring seat 10 is arranged on the periphery of the shaft and is connected with the gland 11 through a transmission pin; the periphery of the end face of the static ring seat 10 opposite to the movable ring seat 4 is provided with a check ring B which is matched with the check ring A8 in structure, a floating ring B12 is arranged in a radial space formed by the check ring B and the shaft, and the floating ring B12 is attached to and sealed with the end face of the floating ring A9.
Further, the floating ring A9 and the movable ring seat 4 are provided with a sealing ring B in an axial non-interference fit manner.
Further, the floating ring B12 and the stationary ring seat 10 are provided with a sealing ring C in an axial non-interference fit manner.
Further, the stationary ring seat 10 is provided with a sealing ring D13 in an interference fit with the gland 11 in the radial direction.
Further, the gland is fixed on the sealed cavity shell.
Furthermore, the radial inner side of the retainer ring A8 is provided with at least 4 lugs which are uniformly distributed; the floating ring A9 is provided with a columnar groove, and the lug is inserted into the groove to prevent the relative rotation between the movable ring seat 4 and the floating ring A9; the radial inner side of the retainer ring B is provided with at least 4 lugs which are uniformly distributed; the floating ring B12 is provided with a column-shaped groove, and the lug is inserted into the groove to prevent the floating ring B12 and the stationary ring seat 10 from rotating relatively.
The key for prolonging the service life of the seal is to improve the service stability and the service life of the friction pair to the maximum extent. The utility model improves and designs the structure of the moving ring and the static ring while fully considering the structural manufacturability and the processing manufacturability, changes the mounting structure design of the static ring component of the former moving ring component, and effectively improves the service life by adopting the floating ring design.
Drawings
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, the present invention provides a float-type mechanical seal device, including,
the transmission seat 1 is provided with a fastening screw 2 in the radial direction and is tightly pressed and fixed on the shaft; a sealing ring A3 is arranged on the inner side of the transmission seat 1 and the shaft in the radial direction;
the part of the movable ring seat 4, which is close to the medium side in the axial direction, is positioned at the periphery of the transmission seat 1; a cylindrical hole A is formed in the movable ring seat 4, and a cylindrical hole B is formed in the transmission seat 1 opposite to the through hole in a matching mode; the cylindrical hole A and the cylindrical hole B are provided with an anti-rotation pin 5 for connecting the transmission seat 1 and the movable ring seat 4; the inner diameter of the part of the movable ring seat 4 close to the atmosphere side is provided with a circle of protrusion 6, the protrusion 6 surrounds the outside of the shaft, and a space is arranged between the protrusion 6 and the atmosphere side end part of the transmission seat 1, and a wave spring 7 is arranged in the space;
the periphery of the atmospheric side end part of the movable ring seat 4 is axially protruded with a retainer ring A8, a floating ring A9 is arranged in a space formed by the retainer ring A8 and a shaft, and the outer edge of the retainer ring A8 is bent to prevent the floating ring from falling off before installation;
the stationary ring seat 10 is arranged on the periphery of the shaft and connected with a gland 11 through a transmission pin, and the gland is fixed on the sealed cavity shell. The periphery of the end face of the static ring seat 10 opposite to the movable ring seat 4 is provided with a check ring B which is matched with the check ring A8 in structure, a floating ring B12 is arranged in a radial space formed by the check ring B and the shaft, and the floating ring B12 is attached to and sealed with the end face of the floating ring A9.
In order to achieve better sealing effect, a radial or axial sealing ring is added according to the practical work of the structure, for example: the floating ring A9 and the movable ring seat 4 are provided with a sealing ring B in axial non-interference fit. The floating ring B12 is provided with a sealing ring C in a non-interference fit on the axial direction of the stationary ring seat 10, and other sealing can be realized by adopting an interference fit if sealing is desired, for example: and a sealing ring D13 is arranged on the static ring seat 10 and the gland 11 in the radial direction.
The proposal is improved that the radial inner side of the retainer ring A8 is provided with at least 4 lugs which are evenly distributed; the floating ring A9 is provided with a columnar groove, and the lug is inserted into the groove to prevent the relative rotation between the movable ring seat 4 and the floating ring A9; the radial inner side of the retainer ring B is provided with at least 4 lugs which are uniformly distributed; the floating ring B12 is provided with a column-shaped groove, and the lug is inserted into the groove to prevent the floating ring B12 and the stationary ring seat 10 from rotating relatively.
Mainly aiming at the standard sealed cavity, the sealing adaptability is required to be strong and the standard seal can be exchanged. The sealing compensation piece is a wave spring, and when the sealing compensation piece works, the auxiliary sealing ring isolates a medium from the wave spring, so that the effective work of the spring is ensured. The moving ring and the static ring adopt hard friction pairs, the size of the friction pairs is the same, and the friction pairs and the ring seat adopt a floating structure. The friction pair and the ring seat are arranged at the axial position in a sealing mode, the joint sealing is kept by spring force and medium pressure, the excircle groove and the ring seat lug are matched to transmit torque, the whole friction pair is not deformed, and the stability of sealing operation is improved. In the shaft sealing process, the floating ring A and the floating ring B are always attached and sealed, the radial direction and the axial direction do not displace, the floating structure is designed, and the problem of sealing leakage caused by long-time deformation of the conventional mosaic structure is solved. The structure is found in actual production, the sealing performance of the structure is good, and the service life of the sealing friction pair is prolonged. The movable ring seat and the transmission seat are driven by radial pins, and the movable ring seat and the transmission seat are compensated by a wave spring and have compact structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a mechanical seal device of float dress type which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the transmission seat (1) is provided with a fastening screw (2) in the radial direction and is tightly pressed and fixed on the shaft; a sealing ring A (3) is arranged on the inner side of the transmission seat (1) and the shaft in the radial direction;
the part, close to the medium side in the axial direction, of the moving ring seat (4) is positioned on the periphery of the transmission seat (1); a cylindrical hole A is formed in the movable ring seat (4), and a cylindrical hole B is formed in the transmission seat (1) opposite to the through hole in a matching mode; the cylindrical hole A and the cylindrical hole B are provided with an anti-rotation pin (5) for connecting the transmission seat (1) and the movable ring seat (4); the inner diameter of the part of the movable ring seat (4) close to the atmosphere side is provided with a circle of protrusions (6), the protrusions (6) surround the outer side of the shaft, a space is arranged between the protrusions (6) and the atmosphere side end part of the transmission seat (1), and a wave spring (7) is arranged in the space; the periphery of the atmospheric side end part of the movable ring seat (4) is axially protruded with a retainer ring A (8), a floating ring A (9) is arranged in a space formed by the retainer ring A (8) and a shaft, and the outer edge of the retainer ring A (8) is bent to prevent the floating ring from falling off before installation;
the stationary ring seat (10) is arranged on the periphery of the shaft and is connected with the gland (11) through a transmission pin; the periphery of the end face of the static ring seat (10) opposite to the movable ring seat (4) is provided with a retainer ring B which is matched with the retainer ring A (8) in structure, a floating ring B (12) is arranged in a radial space formed by the retainer ring B and the shaft, and the end face of the floating ring B (12) is attached and sealed with the end face of the floating ring A (9).
2. The float-type mechanical seal device according to claim 1, wherein: the floating ring A (9) and the movable ring seat (4) are axially provided with a sealing ring B in a non-interference fit manner.
3. The float-type mechanical seal device according to claim 1, wherein: the floating ring B (12) and the static ring seat (10) are provided with a sealing ring C in axial non-interference fit.
4. The float-type mechanical seal device according to claim 1, wherein: the static ring seat (10) and the gland (11) are provided with a sealing ring D (13) in a radial interference fit manner.
5. The float-type mechanical seal device according to claim 1, wherein: the gland is fixed on the sealed cavity shell.
6. The float-type mechanical seal device according to claim 1, wherein: the radial inner side of the retainer ring A (8) is provided with at least 4 lugs which are uniformly distributed; the floating ring A (9) is provided with a columnar groove, and the lug is inserted into the groove to prevent the movable ring seat (4) and the floating ring A (9) from rotating relatively; the radial inner side of the retainer ring B is provided with at least 4 lugs which are uniformly distributed; the floating ring B (12) is provided with a columnar groove, and the lug is inserted into the groove to prevent the floating ring B (12) and the static ring seat (10) from rotating relatively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122348973.2U CN215763293U (en) | 2021-09-27 | 2021-09-27 | Floating mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122348973.2U CN215763293U (en) | 2021-09-27 | 2021-09-27 | Floating mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215763293U true CN215763293U (en) | 2022-02-08 |
Family
ID=80091437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122348973.2U Active CN215763293U (en) | 2021-09-27 | 2021-09-27 | Floating mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215763293U (en) |
-
2021
- 2021-09-27 CN CN202122348973.2U patent/CN215763293U/en active Active
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