CN210106541U - Mechanical seal mounting tool for gear box - Google Patents
Mechanical seal mounting tool for gear box Download PDFInfo
- Publication number
- CN210106541U CN210106541U CN201920337383.XU CN201920337383U CN210106541U CN 210106541 U CN210106541 U CN 210106541U CN 201920337383 U CN201920337383 U CN 201920337383U CN 210106541 U CN210106541 U CN 210106541U
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- CN
- China
- Prior art keywords
- mechanical seal
- output shaft
- ring
- box body
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a mechanical seal mounting tool for a gear box, which comprises a box body, an output shaft extending out of the box body and a sealing element arranged between the box body and the output shaft, wherein a fixing hole is arranged along the central axis of the output shaft; the screw rod is inserted into the fixing hole through the communicating hole, a nut is screwed on the screw rod positioned outside the gland, and the sealing element is positioned by rotating the nut. The utility model discloses dress precision height, convenient to use, sealing member atress are even, do not have the fish tail phenomenon, sealed effectual.
Description
Technical Field
The utility model relates to a mechanical seal technical field, concretely relates to mechanical seal mounting tool for gear box.
Background
The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, keeping fit and relatively sliding under the action of fluid pressure and the elasticity of a compensating mechanism and the matching of an auxiliary seal.
Most of the water pumps in the prior art are directly driven by a rotating shaft of a motor, so that a mechanical sealing device needs to be arranged between the rotating shaft of the motor and a pump body. In a pair of sealing pairs of a general mechanical seal, a movable ring rotates relatively along with a rotating shaft, and abutting pressure is formed between the end faces of a static ring and the movable ring to form sealing.
Rotating machinery working underwater has higher requirements on sealing performance, and mechanical sealing belongs to a core component, so that when an output shaft of a gear box moves relatively, external water cannot enter the gear box. When mechanical seal is installed, manual installation is usually adopted, the smoothness and cleanness of a contact surface are difficult to guarantee, force application by workers is uneven, misoperation is easy to occur, and a sealing element collides with a shaft, so that the sealing element is damaged, and the sealing performance is weakened.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a not enough to prior art, provide a mechanical seal mounting tool for gear box that installation accuracy is high, convenient, swift, the atress is even, no fish tail, sealed effectual.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a mechanical seal mounting tool for a gear box comprises a box body, an output shaft extending out of the box body and a sealing element arranged between the box body and the output shaft, wherein a fixing hole is formed along the central axis of the output shaft;
the screw rod is inserted into the fixing hole through the communicating hole, a nut is screwed on the screw rod positioned outside the gland, and the sealing element is positioned by rotating the nut.
Aiming at the technical characteristics, the sealing element is arranged at the contact part of the output shaft and the box body to prevent water from entering and damaging an instrument, in the installation process of the sealing element, the sealing element is firstly placed on the output shaft, then the protective washer and the extension sleeve are sequentially placed along the output shaft, then the gland is clamped at the top end of the extension sleeve, then the screw rod is inserted into the fixing hole for fixing through the through hole on the gland, finally the nut is screwed on the screw rod, and the sealing element is gradually pressed into the groove between the box body and the output shaft by rotating the nut; the fixing hole plays a role in fixing the screw rod, and the screw rod plays a role in guiding, so that accurate positioning of the sealing element is ensured; the bottom of the protective washer is used for pressing the sealing element, and the upper part of the protective washer is sleeved with the extension sleeve, so that the extension sleeve is prevented from being scratched when directly contacting the sealing element; the nut achieves the installation of the seal by moving downwards.
Preferably, the seal comprises a mechanical seal static ring and a mechanical seal dynamic ring.
Preferably, a gasket is arranged between the nut and the gland.
Preferably, a pre-tightening retainer ring is arranged on the outer side of the mechanical seal ring and is fixed by a positioning pin. The matching of the mechanical seal static ring and the mechanical seal dynamic ring needs pre-tightening force, the pre-tightening force is provided by a spring on the mechanical seal dynamic ring, and the pre-tightening retainer ring ensures that the spring is always kept in a compressed state in the process of using the mechanical seal.
Preferably, a penetrating head is arranged at the lower end of the extension sleeve, a hollow support table is arranged at one end inside the protection washer, the penetrating head is sleeved on the support table, the inner diameter of the support table is equal to the inner diameter of the penetrating head, and the outer diameter of the support table is larger than the outer diameter of the penetrating head. The sealing element is guaranteed to be stressed uniformly in the pressing process, and the visual attractiveness is met.
Preferably, the outer diameter of the extension sleeve is equal to the outer diameter of the protection washer.
Preferably, the extension sleeve has a length greater than the extended length of the output shaft. The installation accuracy of the sealing element is effectively guaranteed, the sealing element can be installed more in place, and the sealing element is prevented from being pressed in incompletely.
Preferably, a sealing ring is arranged between the sealing element and the box body. Further ensuring the effect of mechanical sealing.
The utility model has the advantages that:
the utility model discloses a combination of lead screw and extension sleeve, under the rotatory promotion effect of nut, the sealing member realizes gradual installation, moves steadily undulant, has avoided the injury that causes sealing member and box and output shaft when installing, adopts the guide effect of lead screw and extension sleeve, has guaranteed the vertical installation of sealing member, has avoided the phenomenon that the sealing member appears the slope, has guaranteed the sealed effect of sealing member; the installation process of the sealing element is that the mechanical seal static ring is installed firstly, and then the mechanical seal dynamic ring is installed; when the mechanical seal static ring is installed, the contact surface of the mechanical seal static ring is uniformly stressed, and the contact surface of the mechanical seal static ring is vertical to the axis of the output shaft; the pretightening force of the mechanical seal rotating ring is effectively ensured when the mechanical seal rotating ring is installed, and the situations of insufficient pretightening force, uneven pretightening force and the like are avoided. The tool is simple in structure, convenient to detach and use and convenient to move.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 is a cross-sectional view of the present invention;
fig. 4 is an explosion diagram of the present invention.
In the figure: the device comprises a box body 1, an output shaft 2, a machine seal static ring 3, a machine seal movable ring 4, a pre-tightening retainer ring 5, a positioning pin 6, a protection washer 7, an extension sleeve 8, a gland 9, a lead screw 10, a gasket 11, a nut 12 and a sealing ring 13.
Detailed Description
The invention is further described with reference to the following figures and examples.
As shown in fig. 1-4, a mechanical seal mounting tool for a gear box comprises a box body 1, an output shaft 2 extending out of the box body 1, and a sealing element arranged between the box body 1 and the output shaft 2, wherein a fixing hole is formed along the central axis of the output shaft 2; a seal ring 13 is provided between the seal member and the case 1.
The mechanical seal mounting tool further comprises a screw rod 10 and an extension sleeve 8 sleeved outside the output shaft 2, a gland 9 is clamped at the outer end of the extension sleeve 8, a protection gasket 7 is arranged between the extension sleeve and a sealing piece, a communication hole is formed in the center of the gland 9, the screw rod 10 is inserted into the fixing hole through the communication hole, a nut 12 is screwed on the screw rod 10 located outside the gland 9, and a gasket 11 is arranged between the nut 12 and the gland 9.
The lower end of the extension sleeve 8 is provided with a penetrating head, one end inside the protection washer 7 is provided with a hollow support table, the penetrating head is sleeved on the support table, the inner diameter of the support table is equal to that of the penetrating head, and the outer diameter of the support table is larger than that of the penetrating head; the external diameter of the extension sleeve 8 is equal to the external diameter of the protection washer 7; the extension sleeve 8 has a length greater than the extended length of the output shaft 2.
The sealing element comprises a static sealing ring 3 and a dynamic sealing ring 4; and a pre-tightening retainer ring 5 is arranged on the outer side of the mechanical seal ring 4, and the pre-tightening retainer ring 5 is fixed by a positioning pin 6.
The utility model discloses a use: after the output shaft 2 of the gear box is installed, the screw rod 10 is installed in a fixing hole of the output shaft 2, then the sealing ring 13 is placed in a groove of the box body 1, the mechanical seal static ring 3 is sleeved on the output shaft 2 and is arranged at a notch of the box body 1, then the protection washer 7, the extension sleeve 8 (sleeves or sleeve pipe groups with different lengths are selected according to requirements) and the gland 9 are sequentially placed on the output shaft 2, then the screw rod 10 is fixed in the fixing hole of the output shaft 2 through a through hole on the gland 9, the washer and the nut 12 are screwed into the screw rod 10, and then the nut 12 is pre-tightened by a wrench, so that the mechanical seal static ring 3 is pressed into the groove and then is detached.
The mechanical seal moving ring 4 is installed by repeating the above process, the mechanical seal moving ring 4 is sleeved on the output shaft 2 and is arranged at the notch of the box body 1, then the pre-tightening check ring 5, the protection washer 7, the extension sleeve 8 (sleeves or sleeve pipe groups with different lengths are selected according to requirements) and the gland 9 are sequentially placed on the output shaft 2, then the screw rod 10 is fixed in the fixing hole of the output shaft 2 through the through hole on the gland 9, the washer and the nut 12 are screwed into the screw rod 10, then the nut 12 is pre-tightened by a wrench, the mechanical seal moving ring 4 is installed, then the pre-tightening nut 12 is fixed by the positioning pin 6, and finally the installation tool is detached.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A mechanical seal mounting tool for a gear box comprises a box body, an output shaft extending out of the box body and a sealing element arranged between the box body and the output shaft, and is characterized in that a fixing hole is formed along the central axis of the output shaft;
the screw rod is inserted into the fixing hole through the communicating hole, a nut is screwed on the screw rod positioned outside the gland, and the sealing element is positioned by rotating the nut.
2. The mechanical seal installation tool for a gearbox of claim 1, wherein said seal comprises a mechanical seal stationary ring and a mechanical seal moving ring.
3. The mechanical seal installation tool for a gearbox of claim 1, wherein a gasket is provided between the nut and the gland.
4. The mechanical seal installation tool for the gearbox as set forth in claim 2, wherein a pre-tightening retainer ring is arranged on the outer side of the mechanical seal ring, and the pre-tightening retainer ring is fixed by a positioning pin.
5. The mechanical seal installation tool for the gearbox according to claim 1, wherein a through head is provided at a lower end of the extension sleeve, a hollow support platform is provided at one end inside the protection washer, the through head is sleeved on the support platform, an inner diameter of the support platform is equal to an inner diameter of the through head, and an outer diameter of the support platform is larger than an outer diameter of the through head.
6. The mechanical seal installation tool for a gearbox of claim 1, wherein an outer diameter of said extension sleeve is equal to an outer diameter of said protective washer.
7. A tool for setting a mechanical seal for a gearbox according to claim 1, wherein said extension sleeve has a length greater than the overhang length of said output shaft.
8. The mechanical seal installation tool for the gearbox according to claim 1, wherein a seal ring is arranged between the seal member and the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920337383.XU CN210106541U (en) | 2019-03-18 | 2019-03-18 | Mechanical seal mounting tool for gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920337383.XU CN210106541U (en) | 2019-03-18 | 2019-03-18 | Mechanical seal mounting tool for gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210106541U true CN210106541U (en) | 2020-02-21 |
Family
ID=69532841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920337383.XU Expired - Fee Related CN210106541U (en) | 2019-03-18 | 2019-03-18 | Mechanical seal mounting tool for gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210106541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905654A (en) * | 2024-01-16 | 2024-04-19 | 中国电力工程顾问集团东北电力设计院有限公司 | Wind turbine generator system maintenance system |
-
2019
- 2019-03-18 CN CN201920337383.XU patent/CN210106541U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905654A (en) * | 2024-01-16 | 2024-04-19 | 中国电力工程顾问集团东北电力设计院有限公司 | Wind turbine generator system maintenance system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 |