CN218992349U - Combined structure silicon carbide mechanical sealing device - Google Patents
Combined structure silicon carbide mechanical sealing device Download PDFInfo
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- CN218992349U CN218992349U CN202223535937.8U CN202223535937U CN218992349U CN 218992349 U CN218992349 U CN 218992349U CN 202223535937 U CN202223535937 U CN 202223535937U CN 218992349 U CN218992349 U CN 218992349U
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Abstract
The utility model discloses a combined structure silicon carbide mechanical sealing device which comprises a driving ring (1), a moving ring seat (2), a sealing moving ring (3), a sealing static ring (4) and a spring (5); the sealing device is characterized in that a plurality of positioning blocks (2.1) are arranged in a central hole of the movable ring seat (2), positioning grooves (1.1) are formed in the outer wall of the middle of the driving ring (1), each positioning block (2.1) is embedded into each positioning groove (1.1) and moves axially, the sealing movable ring (3) is embedded into one end of the movable ring seat (2) and is limited in the circumferential direction through a plurality of positioning pins (8), and the end face of the sealing movable ring (3) is pushed by the spring (5) to abut against the end face of the sealing stationary ring (4) to form a sealing face. According to the silicon carbide mechanical sealing device with the combined structure, the sealing moving ring is installed in the moving ring seat through the plurality of locating pins, and the outer wall of the sealing moving ring and the moving ring seat are sealed, so that the sealing moving ring is convenient to assemble and disassemble, and the circumferential locating force of the sealing moving ring and the moving ring can be increased.
Description
Technical Field
The utility model relates to the technical field of sealing elements, in particular to a silicon carbide mechanical sealing device with a combined structure.
Background
The utility model discloses a sanitary pump mechanical seal device at present, including axle sleeve, movable ring seat, sealed movable ring, sealed quiet ring, quiet ring seat, gland and ripples spring, the movable ring seat cover on the axle sleeve, quiet ring seat install on the gland, ripples spring install in the movable ring seat, movable ring seat and sealed movable ring close-fitting seal, sealed quiet ring and quiet ring seat also close-fitting seal, close-fitting seal means that the tip of movable ring seat and quiet ring seat all is equipped with the standing groove, sealed movable ring and sealed quiet ring close-fitting seal respectively in the standing groove of movable ring seat and quiet ring seat. The tight seal is made by an embedding technology which is well known in the industry, namely, the outer diameter of the prepared seal moving ring is slightly larger than the inner diameter of the moving ring seat, the outer diameter of the seal stationary ring is also slightly larger than the inner diameter of the stationary ring seat, so that the seal moving ring or the seal stationary ring is put in the moving ring seat and the stationary ring seat and is not put in, the moving ring seat and the stationary ring seat are required to be heated first to be heated, the inner diameters of the seal moving ring and the seal stationary ring are respectively larger than the inner diameters of the seal moving ring and the seal stationary ring seat, and then the moving ring seat and the stationary ring seat are cooled, so that the tight seal is realized between the moving ring seat and the seal moving ring, namely, the seal stationary ring seat and the seal stationary ring seat are also tightly sealed, namely, the seal moving ring seat and the seal stationary ring are equivalent to form a whole. The sealing movable ring and the movable ring seat of the mechanical sealing device for the sanitary pump with the structure are fixed together in an interference fit manner, and the difficulty coefficient is high when the mechanism is disassembled and assembled, so that the mechanism is inconvenient to replace in the later period. Moreover, the two are in interference fit, the circumferential limiting force is poor, and the possibility of deflection exists.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the silicon carbide mechanical sealing device with the combined structure, which is characterized in that the sealing moving ring is arranged in the moving ring seat through a plurality of positioning pins, and the outer wall of the sealing moving ring and the moving ring seat are sealed, so that the sealing moving ring is convenient to assemble and disassemble, and the circumferential positioning force of the sealing moving ring and the moving ring can be increased.
The utility model provides a combined structure silicon carbide mechanical sealing device with the following structure, which comprises a driving ring, a moving ring seat, a sealing moving ring, a sealing stationary ring and a spring; one end of the driving ring is fixed on the rotating shaft through a plurality of screws, the moving ring seat is sleeved on the front section of the driving ring, and the sealing stationary ring and the sealing cover are circumferentially limited; the method is characterized in that: the movable ring seat is characterized in that a plurality of radial inward positioning blocks are arranged in a central hole of the movable ring seat, a plurality of parallel axes which are consistent with the positioning blocks in number are arranged on the outer wall of the middle of the driving movable ring and penetrate through positioning grooves of the inner wall and the outer wall, each positioning block is embedded in the positioning groove and moves axially, a spring is sleeved outside the shaft, one end of the spring abuts against the end part of the driving ring positioned on the movable ring seat, the other end of the spring abuts against the end face of the sealing movable ring, the sealing movable ring is embedded in one end of the movable ring seat and is limited in the circumferential direction through a plurality of positioning pins, and the end face of the sealing movable ring is pushed by the spring to abut against the end face of the sealing stationary ring to form a sealing surface.
The inner end of the sealing movable ring is provided with a plurality of first positioning holes with the same quantity as the positioning pins, a first convex ring is arranged in a central hole of the movable ring seat, a second positioning hole with parallel axes is arranged on the first convex ring, one part of each positioning pin is embedded into the corresponding second positioning hole, and the other part of each positioning pin is embedded into the corresponding first positioning hole, so that circumferential limiting of the movable ring seat and the sealing movable ring is realized.
A first sealing ring is arranged between the outer wall of the sealing moving ring and the inner wall of the moving ring seat, and the first sealing ring is embedded into a first annular groove of the inner wall of the moving ring seat.
A second sealing ring is arranged between the inner wall of the driving ring and the outer wall of the rotating shaft, and a part of the second sealing ring is embedded into a second annular groove of the inner wall of the driving ring.
The inner wall of the tail end of the movable ring seat is sleeved outside the driving ring, and a third sealing ring is arranged between the inner wall and the driving ring.
The sealing movable ring and the sealing static ring are annular, and a space is arranged between the inner sides of the sealing movable ring and the sealing static ring and the rotating shaft.
After the sealing surface is worn, the spring takes the driving ring as a support to push the movable ring seat and the sealing movable ring to be close to the sealing stationary ring.
After adopting the structure, the utility model has the following advantages: because the center hole of the movable ring seat is internally provided with a plurality of positioning blocks, the outer wall of the middle part of the driving ring is provided with positioning grooves, each positioning block is embedded in each positioning groove and axially moves, and the structure enables the movable ring seat and the movable ring to axially approach to the sealing stationary ring. And because the spring is sleeved outside the shaft and one end of the spring is propped against the end part of the driving ring positioned on the movable ring seat, the other end of the spring is propped against the end surface of the sealing movable ring, the end surface of the spring pushes the sealing movable ring to prop against the end surface of the sealing static ring to form a sealing surface, the outer wall of the sealing movable ring is installed in the movable ring seat and sealed with the movable ring seat through a plurality of positioning pins, the sealing movable ring is embedded into one end of the movable ring seat and circumferentially limited through a plurality of positioning pins, and the positioning pins play a role in circumferential positioning, so that the sealing movable ring is convenient to assemble and disassemble, and the circumferential positioning strength of the sealing movable ring and the sealing movable ring can be increased.
As improvement, the inner end of the sealing movable ring is provided with first positioning holes with the same quantity as the positioning pins, a first convex ring is arranged in a central hole of the movable ring seat, a second positioning hole with parallel axes is arranged on the first convex ring, one part of each positioning pin is embedded into the corresponding second positioning hole, and the other part of each positioning pin is embedded into the corresponding first positioning hole, so that circumferential limiting of the movable ring seat and the sealing movable ring is realized, the installation of the positioning pins is more compact, and the strength of the sealing movable ring is not influenced.
As an improvement, a first sealing ring is arranged between the outer wall of the sealing moving ring and the inner wall of the moving ring seat, and the first sealing ring is embedded into a first annular groove of the inner wall of the moving ring seat, so that the sealing performance of the sealing moving ring and the moving ring seat is realized.
As an improvement, a second sealing ring is arranged between the inner wall of the driving ring and the outer wall of the rotating shaft, and a part of the second sealing ring is embedded into a second annular groove of the inner wall of the driving ring, so that the tightness of the inner wall of the driving ring and the outer wall of the rotating shaft is realized.
As an improvement, the inner wall of the tail end of the movable ring seat is sleeved outside the driving ring, and a third sealing ring is arranged between the inner wall and the driving ring, so that the tightness of the movable ring seat and the driving ring is realized.
Drawings
FIG. 1 is a schematic cross-sectional view of a composite structure silicon carbide mechanical seal device of the present utility model.
FIG. 2 is a schematic view of the mounting of the seal ring and the ring seat of the present utility model.
Fig. 3 is a schematic view of the drive ring of the present utility model.
The figure shows:
1. the device comprises a driving ring, 1.1, a positioning groove, 2, a moving ring seat, 2.1, a positioning block, 2.2, a first convex ring, 2.2.1, a second positioning hole, 2.3, a first annular groove, 3, a sealing moving ring, 3.2, a first positioning hole, 4, a sealing static ring, 5, a spring, 6, a screw, 7, a rotating shaft, 8, a positioning pin, 9, a first sealing ring, 10, a second sealing ring, 11 and a third sealing ring.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1-3, the silicon carbide mechanical sealing device with the combined structure comprises a driving ring 1, a moving ring seat 2, a sealing moving ring 3, a sealing stationary ring 4 and a spring 5; one end of the driving ring 1 is fixed on the rotating shaft 7 through a plurality of screws 6, the screws 6 are arranged along the radial direction, the movable ring seat 2 is sleeved on the front section of the driving ring 1, the sealing stationary ring 4 and the sealing cover are circumferentially limited, and the sealing stationary ring is fixed through a plurality of radially distributed pin shafts.
The center hole of the movable ring seat 2 is internally provided with a plurality of radial inward positioning blocks 2.1, the outer wall of the middle part of the driving ring 1 is provided with a plurality of positioning grooves 1.1 which are in parallel with the positioning blocks 3.1 in number and penetrate through the inner wall and the outer wall, each positioning block 2.1 is embedded into the positioning groove 1.1 and moves axially, the width of each positioning block 3.1 is in accordance with the width of the corresponding positioning groove 1.1, the matching of the positioning blocks 3.1 and the positioning groove 1.1 mainly plays a role in axially sliding the movable ring seat 2 along the driving ring 1, so that when the sealing movable ring 3 is worn, the sealing movable ring 3 can axially move and supplement, and the end face of the sealing movable ring 3 is ensured to be clung to the end face of the sealing stationary ring 4.
The spring 5 is sleeved outside the shaft 7, one end of the spring abuts against the end part of the driving ring 1 positioned on the movable ring seat 2, the other end of the spring abuts against the end surface of the sealing movable ring 3, and the spring 5 is a wave spring. The sealing movable ring 3 is embedded into one end of the movable ring seat 2 and is limited in the circumferential direction through a plurality of positioning pins 8, and the end face of the sealing movable ring 3 is pushed by the spring 5 to abut against the end face of the sealing stationary ring 4 to form a sealing face.
The inner end of the sealing movable ring 3 is provided with first positioning holes 3.2 which are consistent with the positioning pins 8 in number, a first convex ring 2.2 is arranged in a central hole of the movable ring seat 2, the first convex ring 2.2 is provided with second positioning holes 2.2.1 with parallel axes, and the number of the second positioning holes 2.2.1 is multiple and is uniformly distributed along the circumference. One part of each positioning pin 8 is embedded into the corresponding second positioning hole 2.2.1, and the other part is embedded into the corresponding first positioning hole 3.2, so that the circumferential limit of the movable ring seat 2 and the sealing movable ring 3 is realized. The positioning pin 8 is divided into two sections, one section with a large diameter and the other section with a small diameter. The large-diameter section is embedded in the first positioning hole 3.2, and the small-diameter section is embedded in the second positioning hole 2.2.1, so that the axial inward limit is realized.
A first sealing ring 9 is arranged between the outer wall of the sealing moving ring 3 and the inner wall of the moving ring seat 2, and the first sealing ring 9 is embedded into a first annular groove 2.3 of the inner wall of the moving ring seat 2.
A second sealing ring 10 is arranged between the inner wall of the driving ring 1 and the outer wall of the rotating shaft 7, and a part of the second sealing ring 10 is embedded into a second annular groove 1.2 of the inner wall of the driving ring 1.
The inner wall of the tail end of the movable ring seat 2 is sleeved outside the driving ring 1, and a third sealing ring 11 is arranged between the inner wall and the driving ring 1.
The sealing movable ring 3 and the sealing static ring 4 are annular, and the inner sides of the sealing movable ring 3 and the sealing static ring 4 are provided with intervals with the rotating shaft 7, so that the inner walls of the sealing movable ring 3 and the sealing static ring 4 are prevented from being contacted with the rotating shaft 7.
After the sealing surface is worn, the spring 5 is supported by the driving ring 1, and pushes the movable ring seat 2 and the movable sealing ring 3 to approach the stationary sealing ring 4.
Claims (7)
1. A combined structure silicon carbide mechanical sealing device comprises a driving ring (1), a moving ring seat (2), a sealing moving ring (3), a sealing static ring (4) and a spring (5); one end of the driving ring (1) is fixed on the rotating shaft (7) through a plurality of screws (6), the movable ring seat (2) is sleeved on the front section of the driving ring (1), and the sealing stationary ring (4) and the sealing cover are circumferentially limited; the method is characterized in that: radial inward positioning blocks (2.1) are arranged in a central hole of the movable ring seat (2), the outer wall of the middle part of the driving ring (1) is provided with a plurality of positioning grooves (1.1) which are consistent with the positioning blocks (2.1) in number and penetrate through the inner wall and the outer wall, each positioning block (2.1) is embedded into the positioning groove (1.1) and moves axially, a spring (5) is sleeved outside a shaft (7) and one end of the spring abuts against the end part of the driving ring (1) located in the movable ring seat (2), the other end of the spring abuts against the end surface of the sealing movable ring (3), the sealing movable ring (3) is embedded into one end of the movable ring seat (2) and is limited in the circumferential direction through a plurality of positioning pins (8), and the spring (5) pushes the end surface of the sealing movable ring (3) to abut against the end surface of the sealing stationary ring (4) to form a sealing surface.
2. A composite structure silicon carbide mechanical seal device according to claim 1, wherein: the inner end of the sealing movable ring (3) is provided with a plurality of first positioning holes (3.2) which are consistent with the positioning pins (8), a first convex ring (2.2) is arranged in a central hole of the movable ring seat (2), a second positioning hole (2.2.1) with a parallel axis is arranged on the first convex ring (2.2), one part of each positioning pin (8) is embedded into the corresponding second positioning hole (2.2.1), and the other part of each positioning pin is embedded into the corresponding first positioning hole (3.2), so that circumferential limiting of the movable ring seat (2) and the sealing movable ring (3) is realized.
3. A composite structure silicon carbide mechanical seal device according to claim 1, wherein: a first sealing ring (9) is arranged between the outer wall of the sealing moving ring (3) and the inner wall of the moving ring seat (2), and the first sealing ring (9) is embedded into a first annular groove (2.3) of the inner wall of the moving ring seat (2).
4. A composite structure silicon carbide mechanical seal device according to claim 1, wherein: a second sealing ring (10) is arranged between the inner wall of the driving ring (1) and the outer wall of the rotating shaft (7), and a part of the second sealing ring (10) is embedded into a second annular groove (1.2) of the inner wall of the driving ring (1).
5. A composite structure silicon carbide mechanical seal device according to claim 1, wherein: the inner wall of the tail end of the movable ring seat (2) is sleeved outside the driving ring (1), and a third sealing ring (11) is arranged between the inner wall and the driving ring.
6. A composite structure silicon carbide mechanical seal device according to claim 1, wherein: the sealing movable ring (3) and the sealing stationary ring (4) are annular, and a space is arranged between the inner side of the sealing movable ring and the rotating shaft (7).
7. A composite structure silicon carbide mechanical seal device according to claim 1, wherein: after the sealing surface is worn, the spring (5) takes the driving ring (1) as a support to push the movable ring seat (2) and the sealing movable ring (3) to be close to the sealing stationary ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223535937.8U CN218992349U (en) | 2022-12-29 | 2022-12-29 | Combined structure silicon carbide mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223535937.8U CN218992349U (en) | 2022-12-29 | 2022-12-29 | Combined structure silicon carbide mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218992349U true CN218992349U (en) | 2023-05-09 |
Family
ID=86219453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223535937.8U Active CN218992349U (en) | 2022-12-29 | 2022-12-29 | Combined structure silicon carbide mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218992349U (en) |
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2022
- 2022-12-29 CN CN202223535937.8U patent/CN218992349U/en active Active
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