CN212429738U - Mechanical seal suitable for side-feeding stirrer - Google Patents
Mechanical seal suitable for side-feeding stirrer Download PDFInfo
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- CN212429738U CN212429738U CN202021238929.5U CN202021238929U CN212429738U CN 212429738 U CN212429738 U CN 212429738U CN 202021238929 U CN202021238929 U CN 202021238929U CN 212429738 U CN212429738 U CN 212429738U
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- Prior art keywords
- sealing ring
- sleeve
- sealing
- mechanical seal
- shaft sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 126
- 230000003068 static effect Effects 0.000 claims abstract description 31
- 238000011010 flushing procedure Methods 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
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Abstract
The utility model discloses a mechanical seal suitable for side formula agitator that advances has solved the problem that mechanical seal's sealed effect is not good, easily wearing and tearing among the prior art. The utility model comprises a flange shell and a shaft sleeve for positioning a stirring shaft, wherein a sealing seat is arranged in the flange shell, a sealing ring sleeve is arranged between the sealing seat and the shaft sleeve, the shaft sleeve is rotationally connected with the sealing seat through a second bearing, a flushing joint is connected with the sealing seat through a thread, and the flushing joint extends out of the flange shell; the inner end part of the shaft sleeve is provided with a movable sealing ring, a static sealing ring is arranged in the sealing seat, and the movable sealing ring is in sealing contact with the static sealing ring; the outer end of the shaft sleeve is provided with a locking sleeve, and the locking sleeve is positioned in the flange shell. The utility model discloses form two at least radial seals between dynamic seal ring and the quiet sealing ring, can effectively prevent wearing and tearing inefficacy when improving the leakproofness, improve this mechanical seal's sealing performance.
Description
Technical Field
The utility model relates to a mechanical seal technical field especially indicates a mechanical seal suitable for side formula agitator that advances.
Background
The side-entry agitator is an agitator in which an agitator is mounted on the side wall of the equipment cylinder. The corresponding stirrer is selected according to the physical properties, capacity and stirring purpose of different media. Therefore, mechanical seals are required on the agitator shaft of side entry agitators to seal the gap between the agitator shaft and the agitator. However, the conventional mechanical seal for a side-entry agitator has the following disadvantages in use; first, the existing mechanical seal has a seal, and the sealing effect is not good. Secondly, when the stirring shaft rotates, the inside of the stirring shaft is easy to block, and the stirring shaft and the mechanical seal are seriously abraded, so that the service life of the mechanical seal can be reduced.
SUMMERY OF THE UTILITY MODEL
To not enough among the above-mentioned background art, the utility model provides a mechanical seal suitable for side formula agitator that advances has solved the problem that mechanical seal's sealed effect is not good, easily wearing and tearing among the prior art.
The technical scheme of the utility model is realized like this: a mechanical seal suitable for a side-entry stirrer comprises a flange shell and a shaft sleeve used for positioning a stirring shaft, wherein a seal seat is arranged in the flange shell, a seal ring sleeve is arranged between the seal seat and the shaft sleeve, the shaft sleeve is rotatably connected with the seal seat through a second bearing, a flushing connector is in threaded connection with the seal seat, and the flushing connector extends out of the flange shell; the inner end part of the shaft sleeve is provided with a movable sealing ring, a static sealing ring is arranged in the sealing seat, and the movable sealing ring is in sealing contact with the static sealing ring; the outer end of the shaft sleeve is provided with a locking sleeve, and the locking sleeve is positioned in the flange shell.
The sealing ring sleeve is a wear-resistant sealing sleeve, and a wear-resistant ceramic layer is arranged on the inner surface of the wear-resistant sealing sleeve; and an axial channel is arranged in the wear-resistant sealing sleeve, one end of the axial channel corresponds to the flushing joint, and the other end of the axial channel corresponds to an annular cavity formed by the movable sealing ring and the static sealing ring.
The dynamic sealing ring is provided with a first plane convex part and a first ring groove, the static sealing ring is provided with a second plane convex part and a multi-peak convex part, the second plane convex part is in surface contact with the first plane convex part, and the multi-peak convex part is matched with the first ring groove to form arc surface contact.
The movable sealing ring is fixed on the shaft sleeve, and a second sealing ring is arranged between the movable sealing ring and the shaft sleeve; the static sealing ring is arranged in the sealing seat through a spring, and a third sealing ring is arranged between the static sealing ring and the sealing seat.
And a bypass channel is arranged on the sealing seat, one end of the bypass channel corresponds to the flushing joint, and the other end of the bypass channel is positioned behind the static sealing ring.
The sealing seat is connected with the flange shell through a fastening screw.
The shaft sleeve is provided with an annular clamping groove, the lower part of the locking sleeve is clamped into the annular clamping groove and matched with the annular clamping groove, and the locking sleeve is tightly propped in the flange shell through the sealing seat; and a locking pin is arranged between the shaft sleeve and the stirring shaft and is positioned in the locking sleeve.
The stirring shaft is rotatably connected with the flange shell through a first bearing, and the first bearing is sealed in the flange shell through an end cover.
The utility model discloses can dismantle on the flange casing and set up the seal receptacle and support the axle sleeve, the installation of being convenient for reduces the cost of overhaul, then adds between axle sleeve and seal receptacle and establishes the seal ring cover, improves mechanical seal's wearability and leakproofness, increase of service life greatly. The utility model discloses form two at least radial seals between dynamic seal ring and the quiet sealing ring, can effectively prevent wearing and tearing inefficacy when improving the leakproofness, improve this mechanical seal's sealing performance. In addition, the sealing seat is detachably provided with an embedded flushing joint for being connected with lubricating liquid or high-pressure water, lubricating liquid or cooling water is introduced into the sealing seat through the flushing joint, the sealing seat is flushed or cooled, the lubricating performance of the movable ring and the static ring is improved, meanwhile, foreign matters can be discharged from a liquid outlet pipeline, the using performance of mechanical sealing is improved, and the service life of the sealing seat is prolonged.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, embodiment 1, a mechanical seal suitable for a side-entry mixer comprises a flange housing 1 and a sleeve 2 for positioning a mixing shaft 11, wherein the sleeve can rotate synchronously with the mixing shaft. The flange housing is bolted to the respective desulfurization or other barrel equipment, and is the support and shield for the entire mechanical seal. And a sealing seat 5 is arranged in the flange shell 1 and is connected with the flange shell through a screw. A sealing ring sleeve 6 is arranged between the sealing seat 5 and the shaft sleeve 2, the sealing ring sleeve 6 is in interference fit with the sealing seat, the shaft sleeve rotates along with the stirring shaft in the sealing seat, and the shaft sleeve 2 is rotatably connected with the sealing seat 5 through a second bearing 7. Threaded connection has flush joint 8 on the seal receptacle 5, realizes being connected with dismantling of seal receptacle. The flushing joint 8 extends out of the flange shell 1 and is used for being connected with lubricating liquid or high-pressure water, lubricating liquid or cooling water is introduced into the sealing seat through the flushing joint to flush or cool the sealing seat, the lubricating performance of the movable ring and the static ring is improved, foreign matters can be discharged from a liquid outlet pipeline, the using performance of mechanical sealing is improved, and the service life of the mechanical sealing is prolonged. A movable sealing ring 3 is arranged at the inner end part of the shaft sleeve 2, a static sealing ring 4 is arranged in a sealing seat 5, and the movable sealing ring 3 is in sealing contact with the static sealing ring 4; namely, the dynamic sealing ring is in surface-to-surface contact with the static sealing ring, and the sealing effect is improved. The outer tip of axle sleeve 2 is equipped with lock sleeve 9 for press from both sides the axle sleeve with the (mixing) shaft is tight radially, realize synchronous rotation between them, and lock sleeve 9 is located flange casing 1, plays dustproof effect, and its structure is compacter.
Furthermore, the seal ring sleeve 6 is a wear-resistant seal sleeve, and a wear-resistant ceramic layer is arranged on the inner surface of the wear-resistant seal sleeve, so that the wear resistance is improved. And an axial channel 12 is arranged in the wear-resistant sealing sleeve, one end of the axial channel 12 corresponds to the flushing joint 8, and the other end of the axial channel 12 corresponds to an annular cavity 13 formed by the movable sealing ring 3 and the static sealing ring 4. When the device works, a flushing fluid source is connected with the flushing connector, flushing fluid enters the annular cavity through the flushing connector and the axial channel, and the movable sealing ring and the static sealing ring are scoured, cooled or lubricated, so that abrasion is slowed down, and the service life is prolonged.
Further, the dynamic sealing ring 3 is fixed on the shaft sleeve 2, in order to improve the sealing performance of the whole device, a second sealing ring 20 is arranged between the dynamic sealing ring 3 and the shaft sleeve 2, and a sealing ring is also arranged between the shaft sleeve 2 and the stirring shaft 11. The static sealing ring 4 is arranged in the sealing seat 5 through a spring 19, and a third sealing ring 14 is arranged between the static sealing ring 4 and the sealing seat 5. The spring is axially arranged, and under the action of the spring, the static sealing ring is tightly pressed against the dynamic sealing ring, so that the sealing property between the static sealing ring and the dynamic sealing ring is ensured.
As shown in fig. 2, in embodiment 2, a mechanical seal suitable for a side-entry agitator is provided, in which a first planar protrusion 3-1 and a first annular groove 3-2 are provided on a dynamic seal ring 3, a second planar protrusion 4-1 and a multi-peak protrusion 4-2 are provided on a static seal ring 4, the second planar protrusion 4-1 is in surface contact with the first planar protrusion 3-1, and the multi-peak protrusion 4-2 is in arc contact with the first annular groove 3-2. By the design, at least two radial seals are formed between the movable sealing ring 3 and the static sealing ring 4, and the sealing performance is improved.
Furthermore, be equipped with by-pass 15 on the seal receptacle 5, the one end of by-pass 15 is corresponding with flush joint 8, and the other end is located the static sealing ring 4 rear, through adjusting the position of flush joint, and the flush fluid that gets into from flush joint gets into between static sealing ring and the seal receptacle through the by-pass, erodes its corresponding cavity. The sealing seat 5 is connected with the flange shell 1 through a fastening screw 16, so that the flange shell is convenient to disassemble and assemble.
Furthermore, an annular clamping groove 17 is formed in the shaft sleeve 2, the lower portion of the locking sleeve 9 is clamped into the annular clamping groove 17 and matched with the annular clamping groove 17, the axial sliding of the shaft sleeve is effectively prevented, the locking sleeve 9 is tightly propped against the flange shell 1 through the sealing seat 5, the bolt connection is not needed, the disassembly and the assembly are convenient, and the maintenance cost is reduced; be equipped with the fitting pin 10 between axle sleeve 2 and the (mixing) shaft 11, fitting pin 10 is located lock sleeve 9 for radially locking axle sleeve and (mixing) shaft, prevent to take place relative rotation between the two, realize the synchronous rotation between the two, reduce wearing and tearing.
Further, the stirring shaft 11 is rotatably connected with the flange housing 1 through a first bearing 18, and the first bearing 18 is sealed in the flange housing 1 through an end cover 21, so as to protect and prevent dust for the bearing.
The other structure is the same as embodiment 1.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A mechanical seal suitable for a side entry mixer, comprising a flange housing (1) and a shaft sleeve (2) for locating a mixing shaft (11), characterized in that: a sealing seat (5) is arranged in the flange shell (1), a sealing ring sleeve (6) is arranged between the sealing seat (5) and the shaft sleeve (2), the shaft sleeve (2) is rotatably connected with the sealing seat (5) through a second bearing (7), a flushing joint (8) is connected with the sealing seat (5) in a threaded manner, and the flushing joint (8) extends out of the flange shell (1); the inner end part of the shaft sleeve (2) is provided with a movable sealing ring (3), a static sealing ring (4) is arranged in a sealing seat (5), and the movable sealing ring (3) is in sealing contact with the static sealing ring (4); the outer end part of the shaft sleeve (2) is provided with a locking sleeve (9), and the locking sleeve (9) is positioned in the flange shell (1).
2. A mechanical seal suitable for use in a side entry mixer as claimed in claim 1, wherein: the sealing ring sleeve (6) is a wear-resistant sealing sleeve, and a wear-resistant ceramic layer is arranged on the inner surface of the wear-resistant sealing sleeve; and an axial channel (12) is arranged in the wear-resistant sealing sleeve, one end of the axial channel (12) corresponds to the flushing joint (8), and the other end of the axial channel corresponds to an annular cavity (13) formed by the movable sealing ring (3) and the static sealing ring (4).
3. A mechanical seal suitable for use in a side entry mixer as claimed in claim 1 or 2, wherein: the dynamic sealing ring is characterized in that a first plane bulge (3-1) and a first annular groove (3-2) are arranged on the dynamic sealing ring (3), a second plane bulge (4-1) and a multi-peak bulge (4-2) are arranged on the static sealing ring (4), the second plane bulge (4-1) is in surface contact with the first plane bulge (3-1), and the multi-peak bulge (4-2) is matched with the first annular groove (3-2) to form arc surface contact.
4. A mechanical seal suitable for use in a side entry mixer as claimed in claim 3, wherein: the dynamic sealing ring (3) is fixed on the shaft sleeve (2), and a second sealing ring (20) is arranged between the dynamic sealing ring (3) and the shaft sleeve (2); the static sealing ring (4) is arranged in the sealing seat (5) through a spring (19), and a third sealing ring (14) is arranged between the static sealing ring (4) and the sealing seat (5).
5. A mechanical seal suitable for use in a side entry mixer as claimed in claim 1 or 2 or 4, wherein: and a bypass channel (15) is arranged on the sealing seat (5), one end of the bypass channel (15) corresponds to the flushing joint (8), and the other end of the bypass channel is positioned behind the static sealing ring (4).
6. A mechanical seal suitable for use in a side entry mixer as claimed in claim 5, wherein: the sealing seat (5) is connected with the flange shell (1) through a fastening screw (16).
7. A mechanical seal suitable for use in a side entry mixer according to claim 1 or 2 or 4 or 6, wherein: an annular clamping groove (17) is formed in the shaft sleeve (2), the lower portion of the locking sleeve (9) is clamped into the annular clamping groove (17) and matched with the annular clamping groove (17), and the locking sleeve (9) is tightly propped against the flange shell (1) through the sealing seat (5); a locking pin (10) is arranged between the shaft sleeve (2) and the stirring shaft (11), and the locking pin (10) is positioned in the locking sleeve (9).
8. A mechanical seal suitable for use in a side entry mixer as claimed in claim 7, wherein: the stirring shaft (11) is rotatably connected with the flange shell (1) through a first bearing (18), and the first bearing (18) is sealed in the flange shell (1) through an end cover (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021238929.5U CN212429738U (en) | 2020-06-30 | 2020-06-30 | Mechanical seal suitable for side-feeding stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021238929.5U CN212429738U (en) | 2020-06-30 | 2020-06-30 | Mechanical seal suitable for side-feeding stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212429738U true CN212429738U (en) | 2021-01-29 |
Family
ID=74278089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021238929.5U Active CN212429738U (en) | 2020-06-30 | 2020-06-30 | Mechanical seal suitable for side-feeding stirrer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212429738U (en) |
-
2020
- 2020-06-30 CN CN202021238929.5U patent/CN212429738U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A mechanical seal suitable for side entry mixers Effective date of registration: 20231128 Granted publication date: 20210129 Pledgee: China Everbright Bank Co.,Ltd. Pledgor: Henan Baosheng Electromechanical Equipment Co.,Ltd. Registration number: Y2023980067763 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |