CN218509775U - Mechanical sealing element for centrifugal pump - Google Patents
Mechanical sealing element for centrifugal pump Download PDFInfo
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- CN218509775U CN218509775U CN202222669553.9U CN202222669553U CN218509775U CN 218509775 U CN218509775 U CN 218509775U CN 202222669553 U CN202222669553 U CN 202222669553U CN 218509775 U CN218509775 U CN 218509775U
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- movable ring
- mechanical seal
- wall
- ring
- centrifugal pump
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Abstract
The utility model discloses a mechanical sealing element for centrifugal pump, which relates to the technical field of centrifugal pump transmission parts, comprising a mechanical seal gland, wherein one side of the mechanical seal gland is detachably provided with a seal cover through a plurality of bolts, the inner side of the mechanical seal gland is provided with a static ring spring, and one side of the static ring spring, which is far away from the mechanical seal gland, is provided with a static ring; the rotating ring seat is installed to the inboard of sealed lid, the rotating ring spring is installed to the inboard of rotating ring seat, one side that the rotating ring seat was kept away from to the rotating ring spring is equipped with the stationary blade, one side that the rotating ring spring was kept away from to the stationary blade is equipped with the rotating ring, this mechanical seal for centrifugal pump, be different from prior art, can ensure to remain the conflict state between rotating ring and the quiet ring throughout, improve the leakproofness, mechanical seal's life has further been improved, can further improve the leakproofness between rotating ring and the quiet ring, reduce and leak, can effectively avoid the shaft to produce the problem of axial float when passing through the axle sleeve transmission, improve equipment operating stability.
Description
Technical Field
The utility model relates to a centrifugal pump drive disk assembly technical field specifically is a mechanical seal spare for centrifugal pump.
Background
The centrifugal pump works by utilizing the rotation of an impeller to enable water to generate centrifugal motion, before the water pump is started, a pump shell and a water suction pipe are filled with water, then a motor is started, a pump shaft drives the impeller and the water to generate high-speed rotation motion, the water generates centrifugal motion and is thrown to the outer edge of the impeller, and the water flows into a water pressure pipeline of the water pump through a flow channel of a volute-shaped pump shell.
At present, can use mechanical seal on the centrifugal pump, but the inside most of current mechanical seal only adopts single spring structure, in case the spring is impaired, when unable providing elastic support, then can lead to the clearance grow between rotating ring and the quiet ring, leakproofness greatly reduced this moment, and the shaft member when through the axle sleeve transmission, produces axial float easily to it is unstable to lead to whole equipment operation, for this reason, we propose a mechanical seal for centrifugal pump.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mechanical seal spare for centrifugal pump to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: a mechanical sealing element for a centrifugal pump comprises a mechanical seal gland, wherein a sealing cover is detachably mounted on one side of the mechanical seal gland through a plurality of bolts, a static ring spring is mounted on the inner side of the mechanical seal gland, and a static ring is arranged on one side, away from the mechanical seal gland, of the static ring spring;
a movable ring seat is installed on the inner side of the sealing cover, a movable ring spring is installed on the inner side of the movable ring seat, a fixed sheet is arranged on one side, away from the movable ring seat, of the movable ring spring, a movable ring is arranged on one side, away from the movable ring spring, of the fixed sheet, a movable ring sealing ring which is abutted against the side wall of the fixed sheet is installed on the inner side of the movable ring, a shaft sleeve is inserted into the movable ring seat, and one end of the shaft sleeve penetrates through the outer side of the sealing cover;
a plurality of mounting holes are formed in the outer wall of the movable ring seat, a stop spring and a stop pin are placed in the mounting holes, and one end of the stop pin is inserted into the stop hole formed in the outer wall of the shaft sleeve.
Preferably, a gasket is arranged between the mechanical seal gland and the seal cover; the protection device is used for protecting the surface of the mechanical seal gland and can prevent the bolt from loosening.
Preferably, a plurality of locking blocks are fixedly connected to the inner wall of the mechanical seal gland, and a plurality of locking grooves matched with the locking blocks for use are formed in one side of the stationary ring; the quiet ring can keep quiescent condition under the effect of locking piece and locking groove, and quiet ring spring promotes quiet ring when conflicting rotating ring, because the locking piece has certain length, and then quiet ring can be at the length within range of locking piece can follow axial displacement, and keeps the not emergence rotary motion of quiescent condition.
Preferably, a gap sealing ring is arranged on the inner wall of the mechanical seal gland between the movable ring seat and the static ring; the sealing performance between the movable ring and the static ring can be further improved, and leakage is reduced.
Preferably, the inner wall of the movable ring seat is provided with a plurality of limiting bulges, and the outer walls of the fixed plate and the movable ring are provided with a plurality of limiting grooves matched with the limiting bulges; the movable ring seat is used for enabling the movable ring seat to smoothly drive the movable ring to rotate, and the movable ring can axially move under the action of the movable ring spring.
Preferably, the outer wall of the shaft sleeve is provided with two protruding parts which are respectively abutted against the inner wall of the sealing cover and the outer wall of the movable ring seat; so that the sealing cover can axially fix the shaft sleeve.
Preferably, the inner wall of the movable ring seat is also provided with a positioning bulge, and the outer wall of the shaft sleeve is provided with a positioning groove matched with the positioning bulge; the rotating ring seat is used for enabling the shaft sleeve to smoothly drive the rotating ring seat to rotate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. through the arrangement of the double springs, no matter which spring is damaged, the other spring still can play a role in pushing, the movable ring and the static ring can be ensured to be always kept in a collision state, the sealing performance is improved, and the service life of the mechanical sealing element is further prolonged;
2. by arranging the intermittent sealing ring, the sealing property between the movable ring and the static ring can be further improved, and leakage is reduced;
3. through the setting of locking spring and stop pin, make the stop pin stabilize under the spring action of locking spring and insert in the locking hole in the axle sleeve outside after the installation, can effectively avoid the shaft member to produce the problem of axial float when passing through the axle sleeve transmission, improve equipment operating stability.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic overall sectional view of the present invention;
FIG. 3 is a schematic structural view after the whole body of the present invention is disassembled;
FIG. 4 is a schematic structural view of the movable ring seat of the present invention;
FIG. 5 is a schematic structural view of the stationary ring of the present invention;
FIG. 6 is a schematic view of the fixing plate and the movable ring of the present invention;
fig. 7 is a schematic structural view of the mechanical seal gland in partial section.
In the figure: 1. a mechanical seal gland; 101. a locking block; 2. a sealing cover; 3. a gasket; 4. a bolt; 5. a stationary ring spring; 6. a stationary ring; 601. a locking groove; 7. a gap seal ring; 8. a movable ring seat; 801. a limiting bulge; 802. mounting holes; 803. positioning the projection; 9. a moving ring spring; 10. a fixing sheet; 11. a moving ring sealing ring; 12. a moving ring; 1201. a limiting groove; 13. a shaft sleeve; 1301. a stop hole; 1302. positioning a groove; 14. a stopper spring; 15. a retaining pin.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a mechanical sealing element for a centrifugal pump comprises a mechanical sealing gland 1, wherein a sealing cover 2 is detachably arranged on one side of the mechanical sealing gland 1 through a plurality of bolts 4, and a gasket 3 is arranged between the mechanical sealing gland 1 and the sealing cover 2; for protecting the surface of the mechanical seal gland 1 and preventing the bolt 4 from loosening.
A static ring spring 5 is arranged on the inner side of the mechanical seal gland 1, and a static ring 6 is arranged on one side, away from the mechanical seal gland 1, of the static ring spring 5; a plurality of locking blocks 101 are fixedly connected to the inner wall of the mechanical seal gland 1, and a plurality of locking grooves 601 matched with the locking blocks 101 for use are formed in one side of the stationary ring 6; the stationary ring 6 can keep the stationary state under the effect of locking piece 101 and locking groove 601, and when stationary ring spring 5 promoted stationary ring 6 and contradict rotating ring 12, because locking piece 101 has certain length, and then stationary ring 6 can be at the length within range of locking piece 101 can follow axial displacement, and keeps the stationary state and does not take place rotary motion.
A movable ring seat 8 is installed on the inner side of the sealing cover 2, a movable ring spring 9 is installed on the inner side of the movable ring seat 8, a fixed plate 10 is arranged on one side, away from the movable ring seat 8, of the movable ring spring 9, a movable ring 12 is arranged on one side, away from the movable ring spring 9, of the fixed plate 10, a movable ring sealing ring 11 which is abutted against the side wall of the fixed plate 10 is installed on the inner side of the movable ring 12, a shaft sleeve 13 is inserted into the movable ring seat 8, and one end of the shaft sleeve 13 penetrates through the outer side of the sealing cover 2; a gap sealing ring 7 is arranged on the inner wall of the mechanical seal gland 1 at a position between the movable ring seat 8 and the static ring 6; the sealing performance between the dynamic ring 12 and the static ring 6 can be further improved, and the leakage can be reduced.
A plurality of limiting bulges 801 are arranged on the inner wall of the movable ring seat 8, and a plurality of limiting grooves 1201 matched with the limiting bulges 801 are arranged on the outer walls of the fixed plate 10 and the movable ring 12; the movable ring seat 8 can smoothly drive the movable ring 12 to rotate, and the movable ring 12 can move along the axial direction under the action of the movable ring spring 9.
The inner wall of the movable ring seat 8 is also provided with a positioning protrusion 803, and the outer wall of the shaft sleeve 13 is provided with a positioning groove 1302 matched with the positioning protrusion 803; the rotating ring seat 8 can be driven to rotate smoothly by the shaft sleeve 13.
A plurality of mounting holes 802 are formed in the outer wall of the movable ring seat 8, a stop spring 14 and a stop pin 15 are placed in the mounting holes 802, one end of the stop pin 15 is inserted into a stop hole 1301 formed in the outer wall of the shaft sleeve 13, two protruding parts are arranged on the outer wall of the shaft sleeve 13, and the two protruding parts respectively abut against the inner wall of the sealing cover 2 and the outer wall of the movable ring seat 8; so that the seal cover 2 can axially fix the sleeve 13.
In the scheme, when the mechanical sealing device is used, when the shaft sleeve 13 rotates, the movable ring seat 8 can be driven to rotate under the action of the positioning protrusions 803 and the positioning grooves 1302, the movable ring seat 8 can drive the movable ring 12 to rotate under the action of the limiting protrusions 801 and the limiting grooves 1201, the static ring 6 keeps in a static state under the action of the locking blocks 101 and the locking grooves 601, at the moment, the contact surfaces of the movable ring 12 and the static ring 6 are abutted under the elastic action of the movable ring spring 9 and the static ring spring 5, so that the mechanical sealing effect is achieved, through the arrangement of the double springs, no matter which spring is damaged, the other spring still can play a role in pushing, the abutting state between the movable ring 12 and the static ring 6 can be guaranteed to be kept all the time, the sealing performance is improved, the service life of the mechanical sealing element is further prolonged, through the arrangement of the intermittent sealing ring, the sealing performance between the movable ring 12 and the static ring 6 can be further improved, the leakage is reduced, finally, through the arrangement of the stop spring 14 and the stop pin 15, the stop spring 14 is installed, the stop hole on the outer side of the shaft sleeve 13 is stably inserted under the elastic action of the shaft sleeve 13, and the problem of the axial running stability of the transmission device can be effectively avoided, and the axial stability of the device is improved.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a mechanical seal for centrifugal pump, includes machine seal gland (1), and there is sealed lid (2), its characterized in that in one side of machine seal gland (1) through a plurality of bolts (4) demountable installation: a static ring spring (5) is installed on the inner side of the mechanical seal gland (1), and a static ring (6) is arranged on one side, away from the mechanical seal gland (1), of the static ring spring (5);
a movable ring seat (8) is installed on the inner side of the sealing cover (2), a movable ring spring (9) is installed on the inner side of the movable ring seat (8), a fixing piece (10) is arranged on one side, away from the movable ring seat (8), of the movable ring spring (9), a movable ring (12) is arranged on one side, away from the movable ring spring (9), of the fixing piece (10), a movable ring sealing ring (11) which is abutted against the side wall of the fixing piece (10) is installed on the inner side of the movable ring (12), a shaft sleeve (13) is inserted in the movable ring seat (8), and one end of the shaft sleeve (13) penetrates through the outer side of the sealing cover (2);
a plurality of mounting holes (802) are formed in the outer wall of the movable ring seat (8), stop springs (14) and stop pins (15) are placed in the mounting holes (802), and one ends of the stop pins (15) are inserted into the stop holes (1301) formed in the outer wall of the shaft sleeve (13).
2. A mechanical seal for a centrifugal pump according to claim 1, wherein: a gasket (3) is arranged between the machine seal gland (1) and the seal cover (2).
3. A mechanical seal for a centrifugal pump according to claim 1, wherein: a plurality of locking blocks (101) are fixedly connected to the inner wall of the machine seal gland (1), and a plurality of locking grooves (601) matched with the locking blocks (101) in use are formed in one side of the static ring (6).
4. A mechanical seal for a centrifugal pump according to claim 1, wherein: and a gap sealing ring (7) is arranged at the position, between the movable ring seat (8) and the static ring (6), of the inner wall of the mechanical seal gland (1).
5. A mechanical seal for a centrifugal pump according to claim 1, wherein: the inner wall of the movable ring seat (8) is provided with a plurality of limiting protrusions (801), and the outer walls of the fixed plate (10) and the movable ring (12) are provided with a plurality of limiting grooves (1201) matched with the limiting protrusions (801) for use.
6. A mechanical seal for a centrifugal pump according to claim 1, wherein: the outer wall of the shaft sleeve (13) is provided with two protruding parts which are respectively abutted against the inner wall of the sealing cover (2) and the outer wall of the movable ring seat (8).
7. A mechanical seal for a centrifugal pump according to claim 1, wherein: the inner wall of the movable ring seat (8) is further provided with a positioning protrusion (803), and the outer wall of the shaft sleeve (13) is provided with a positioning groove (1302) matched with the positioning protrusion (803) for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222669553.9U CN218509775U (en) | 2022-10-11 | 2022-10-11 | Mechanical sealing element for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222669553.9U CN218509775U (en) | 2022-10-11 | 2022-10-11 | Mechanical sealing element for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218509775U true CN218509775U (en) | 2023-02-21 |
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ID=85217061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222669553.9U Active CN218509775U (en) | 2022-10-11 | 2022-10-11 | Mechanical sealing element for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218509775U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116928132A (en) * | 2023-08-04 | 2023-10-24 | 大庆市顺达石油设备制造有限公司 | Mechanical sealing device for centrifugal pump |
| CN117759567A (en) * | 2024-02-22 | 2024-03-26 | 江苏武新泵业有限公司 | centrifugal pump sealing structure |
-
2022
- 2022-10-11 CN CN202222669553.9U patent/CN218509775U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116928132A (en) * | 2023-08-04 | 2023-10-24 | 大庆市顺达石油设备制造有限公司 | Mechanical sealing device for centrifugal pump |
| CN116928132B (en) * | 2023-08-04 | 2024-04-02 | 大庆市顺达石油设备制造有限公司 | Mechanical sealing device for centrifugal pump |
| CN117759567A (en) * | 2024-02-22 | 2024-03-26 | 江苏武新泵业有限公司 | centrifugal pump sealing structure |
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