CN108775401B - Mechanical sealing device - Google Patents
Mechanical sealing device Download PDFInfo
- Publication number
- CN108775401B CN108775401B CN201810986698.7A CN201810986698A CN108775401B CN 108775401 B CN108775401 B CN 108775401B CN 201810986698 A CN201810986698 A CN 201810986698A CN 108775401 B CN108775401 B CN 108775401B
- Authority
- CN
- China
- Prior art keywords
- sealing
- shaft
- mechanical
- grooves
- device body
- 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.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 239000003566 sealing material Substances 0.000 claims abstract description 45
- 239000007779 soft material Substances 0.000 claims abstract description 4
- 238000001125 extrusion Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 210000002268 wool Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 8
- 230000006835 compression Effects 0.000 description 14
- 238000007906 compression Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/24—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings with radially or tangentially compressed packing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Sealing (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention discloses a mechanical sealing device which is used for sealing mechanical equipment and comprises a device body sleeved on a shaft of the mechanical equipment, a plurality of sealing grooves which are annularly arranged on the device body around the circumference of the shaft, sealing materials filled in the sealing grooves, a pressure spring which is arranged in the sealing grooves and is positioned at one side of the sealing materials away from the shaft, and a pressure plate arranged between the sealing materials and the pressure spring, wherein the sealing materials are soft materials, the sealing grooves extend from the circumferential side of the device body towards the direction of the shaft, and the pressure spring can stretch along the extending direction of the sealing grooves and resist the sealing materials on the circumferential side of the shaft. The mechanical sealing device is characterized in that a sealing groove is formed in a device body, a sealing material and a pressure spring are arranged in the sealing groove, the pressure spring is in a tightening state at first and has outwards stretching force, and the sealing material is extruded on the peripheral side part of a shaft of mechanical equipment through the acting force of the pressure spring to achieve a sealing effect.
Description
Technical Field
The present invention relates to a mechanical seal device.
Background
The mechanical devices are of a great variety, and some parts of the mechanical devices can even perform different forms of mechanical movements themselves when the mechanical devices are in operation. Because the working condition of the mechanical equipment is changed in a lot, a sealing device which is adapted to the requirements of different working conditions and cost performance is adopted, otherwise, the performance and the service life of the equipment are affected.
The existing sealing device generally comprises a rubber-plastic soft sealing ring and a mechanical extrusion sealing device, and is mainly suitable for dust prevention and leakage prevention on mechanical equipment, so that the sealing requirement is met. However, the soft sealing ring is entirely sleeved on the shaft of the technical equipment, the shaft is tightly held by the elasticity of the soft sealing ring to achieve the sealing effect, firstly, the rubber and plastic material gradually loses elasticity along with the increase of the service time, and then the sealing performance is gradually lost, and meanwhile, the elasticity of the rubber and plastic material is influenced by the change of temperature and environment, so that the sealing performance of the sealing ring is influenced; the mechanical extrusion sealing device ensures that the two sealing devices can be closely attached to a shaft of mechanical equipment through the extrusion of the moving ring and the static ring with extrusion planes by external force, but when dust particles extruded between the moving ring and the static ring gradually increase, gaps of the sealing device gradually become larger, and then gradually weaken until the sealing performance is lost.
Disclosure of Invention
The invention aims to provide a mechanical sealing device which has good sealing effect and long service life, is not influenced by external environment, and can not influence the tightness due to excessive extruded dust particles.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides a mechanical seal device for mechanical equipment's seal, its include the cover locate the epaxial device body of mechanical equipment, round the circumference of axle is encircled and is located a plurality of seal grooves on the device body, fill in sealing material in the seal groove, locate in the seal groove and be located sealing material keeps away from the pressure spring of one side of axle, locate sealing material with the clamp plate between the pressure spring, wherein sealing material is soft material, the seal groove is followed device body week side is towards the direction of axle extends, the pressure spring can be followed the extending direction of seal groove is flexible and will sealing material supports the week lateral part of axle.
Preferably, the mechanical seal device further comprises a guide rod provided on a side wall of the seal groove away from the shaft and extending in a direction toward the shaft, and the compression spring is spirally wound around a peripheral side portion of the guide rod along an extending direction of the guide rod.
Further preferably, the number of the guide rods is two, and the two guide rods are arranged at intervals along the extending direction perpendicular to the sealing groove.
Preferably, the mechanical sealing device further comprises a fixing module arranged between every two adjacent sealing grooves, a mounting hole formed in the fixing module, and a bolt penetrating through the mounting hole, wherein a screw hole is formed in the mechanical device, and the bolt can penetrate through the mounting hole and is in threaded connection with the screw hole.
Further preferably, a gap is provided between the fixing module and the shaft, and every two adjacent sealing grooves are mutually communicated through the gap.
Still more preferably, the gap is filled with the sealing material.
Preferably, the mechanical sealing device further comprises a cover plate covering the axial side part of the device body, and the cover plate and the device body are coaxially arranged and can be sleeved on the shaft.
Preferably, six sealing grooves are arranged in sequence around the circumference of the shaft.
Further preferably, an included angle is formed between two adjacent side walls of each two adjacent sealing grooves, and the included angle is 60 degrees.
Further preferably, the sealing material is wool felt.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the mechanical sealing device is characterized in that a sealing groove is formed in a device body, a sealing material and a pressure spring are arranged in the sealing groove, the pressure spring is in a tightening state at first and has outwards stretching force, and the sealing material is extruded on the peripheral side part of a shaft of mechanical equipment through the acting force of the pressure spring to achieve a sealing effect.
Drawings
FIG. 1 is a schematic view of a mechanical seal device according to the present invention;
Fig. 2 is an axial cross-sectional schematic view of the mechanical seal of the present invention.
Wherein: 1. a device body; 2. sealing grooves; 3. a sealing material; 4. a pressure spring; 5. a pressing plate; 6. a guide rod; 7. a fixed module; 8. a mounting hole; 9. a bolt; 10. a gap; 11. a cover plate;
100. A shaft.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Referring to fig. 1-2, a mechanical sealing device for sealing a mechanical device includes a device body 1 sleeved on a shaft 100 of the mechanical device, a plurality of sealing grooves 2 circumferentially surrounding the shaft 100 and arranged on the device body 1, a sealing material 3 filled in the sealing grooves 2, a compression spring 4 arranged in the sealing grooves 2 and positioned on one side of the sealing material 3 away from the shaft 100, and a pressing plate 5 arranged between the sealing material 3 and the compression spring 4, wherein the sealing material 3 is a soft material, the sealing grooves 2 extend from the circumferential side of the device body 1 to the direction of the shaft 100, and the compression spring 4 can stretch along the extending direction of the sealing grooves 2 and press the sealing material 3 against the circumferential side of the shaft 100. Here, there are six seal grooves 2, and the six seal grooves 2 are sequentially arranged around the circumferential direction of the shaft 100, and an included angle is formed between two adjacent side walls of each two adjacent seal grooves 2, and the included angle is 60 °. Here, the sealing material 3 is a felt of soft wear-resistant material.
Here, in the present invention, the seal groove 2 is provided on the device body 1, the seal material 3 and the compression spring 4 are provided in the seal groove 2, and the compression spring 4 is in a tightened state at the beginning, and has a force of extending outwards, and the seal material 3 is pressed to the peripheral side portion of the shaft 100 of the mechanical device by the acting force of the compression spring 4, so as to achieve the sealing effect. The provision of the pressure plate 5 makes it possible for the compression spring 4 to press the sealing material 3 better without sinking into the sealing material 3. Even if the sealing material 3 is worn during the operation of the mechanical device, the compression spring 4 can continuously squeeze the non-worn sealing material 3 at the back to the peripheral part of the shaft 100 to ensure the tightness, so that the mechanical sealing device has long service life and good sealing performance. When the dust particles are squeezed between the sealing material 3 and the shaft 100, the sealing material 3 is soft, so that the dust particles can be wrapped inside the sealing material 3, and the sealing material 3 can be continuously clung to the peripheral side part of the shaft 100, so that the sealing effect is not affected.
The mechanical seal device further includes a guide rod 6 provided on a side wall of the seal groove 2 away from the shaft 100 and extending in a direction of the shaft 100, and the compression spring 4 is spirally wound around a peripheral side portion of the guide rod 6 along an extending direction of the guide rod 6. The guide rods 6 are two, and the two guide rods 6 are arranged at intervals along the extending direction of the vertical sealing groove 2. By arranging the guide rod 6, the elastic expansion direction of the pressure spring 4 is more stable, and the reduction of the sealing effect caused by the change of the pressure direction of the pressure spring 4 is avoided.
The mechanical sealing device further comprises a fixing module 7 arranged between every two adjacent sealing grooves 2, a mounting hole 8 formed in the fixing module 7, and a bolt 9 penetrating through the mounting hole 8, wherein a screw hole is formed in the mechanical device, and the bolt 9 can penetrate through the mounting hole 8 and is in threaded connection with the screw hole.
In the present embodiment, a gap 10 is provided between the fixed module 7 and the shaft 100, and each two adjacent seal grooves 2 are disposed in communication with each other through the gap 10, and the gap 10 is filled with the seal material 3. By filling the sealing material 3 in the gap 10, it is ensured that the peripheral portion of the shaft 100 can be completely wrapped by the sealing material 3, further ensuring the sealing effect. Here, after the sealing material 3 in the gap 10 wears away, the sealing material 3 in the seal grooves 2 on both sides can be replenished into the gap 10 under the compression of the compression spring 4.
The mechanical seal device further comprises a cover plate 11 covering the axial side part of the device body 1, wherein the cover plate 11 is coaxially arranged with the device body 1 and can be sleeved on the shaft 100. By the arrangement of the cover plate 11, the compression spring 4 and the sealing material 3 are prevented from falling out from the side in the process of elastic expansion of the compression spring 4. Here, the cover plate 11 is fixed to the fixing module by bolts.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (5)
1. A mechanical seal device for sealing mechanical equipment, characterized in that: the sealing device comprises a device body (1) sleeved on a shaft (100) of mechanical equipment, a plurality of sealing grooves (2) circumferentially arranged on the device body (1) around the shaft (100), sealing materials (3) filled in the sealing grooves (2), pressure springs (4) arranged in the sealing grooves (2) and positioned on one side, far away from the shaft (100), of the sealing materials (3), and pressure plates (5) arranged between the sealing materials (3) and the pressure springs (4), wherein the sealing materials (3) are soft materials, the sealing grooves (2) extend from the circumferential side of the device body (1) towards the direction of the shaft (100), and the pressure springs (4) can stretch along the extending direction of the sealing grooves (2) and press the sealing materials (3) against the circumferential side of the shaft (100);
The mechanical sealing device further comprises a fixing module (7) arranged between every two adjacent sealing grooves (2), a mounting hole (8) formed in the fixing module (7) and a bolt (9) penetrating through the mounting hole (8), a screw hole is formed in the mechanical equipment, and the bolt (9) can penetrate through the mounting hole (8) and is in threaded connection with the screw hole;
A gap (10) is arranged between the fixed module (7) and the shaft (100), and every two adjacent sealing grooves (2) are mutually communicated through the gap (10);
The gap (10) is filled with the sealing material (3);
the sealing material (3) is wool felt;
When the sealing material (3) in the gap (10) is worn away, the sealing material (3) in the sealing grooves (2) at two sides can be supplemented into the gap (10) under the extrusion of the pressure spring (4);
The mechanical sealing device further comprises a guide rod (6) which is arranged on one side wall of the sealing groove (2) away from the shaft (100) and extends towards the direction of the shaft (100), and the pressure spring (4) is spirally wound on the periphery of the guide rod (6) along the extending direction of the guide rod (6).
2. A mechanical seal according to claim 1, wherein: the guide rods (6) are two, and the two guide rods (6) are arranged at intervals along the extending direction perpendicular to the sealing groove (2).
3. A mechanical seal according to claim 1, wherein: the mechanical sealing device further comprises a cover plate (11) which is covered on the axial side part of the device body (1), and the cover plate (11) and the device body (1) are coaxially arranged and can be sleeved on the shaft (100).
4. A mechanical seal according to claim 1, wherein: six sealing grooves (2) are arranged in sequence around the circumference of the shaft (100).
5. A mechanical seal according to claim 4, wherein: an included angle is formed between two adjacent side walls of each two adjacent sealing grooves (2), and the included angle is 60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810986698.7A CN108775401B (en) | 2018-08-28 | 2018-08-28 | Mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810986698.7A CN108775401B (en) | 2018-08-28 | 2018-08-28 | Mechanical sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775401A CN108775401A (en) | 2018-11-09 |
| CN108775401B true CN108775401B (en) | 2024-05-24 |
Family
ID=64029420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810986698.7A Active CN108775401B (en) | 2018-08-28 | 2018-08-28 | Mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108775401B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616991B (en) * | 2019-10-14 | 2020-12-18 | 巢湖市兰天大诚门窗幕墙有限公司 | Electric high-resistance partition bridge window |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201661684U (en) * | 2010-03-23 | 2010-12-01 | 安景坡 | Compound friction type sealing device |
| CN103591012A (en) * | 2013-11-12 | 2014-02-19 | 成都科盛石油科技有限公司 | Sealing device capable of being adjusted automatically |
| CN103836200A (en) * | 2012-11-26 | 2014-06-04 | 湖北双环科技股份有限公司 | Sealing device for calcinator steam inlet shaft |
| CN103899757A (en) * | 2014-04-08 | 2014-07-02 | 蓝小玲 | Rotary cylinder seal device |
| CN106594282A (en) * | 2015-10-19 | 2017-04-26 | 南京凯盛国际工程有限公司 | Sealing device capable of automatically compensating abrasion loss |
| CN208719353U (en) * | 2018-08-28 | 2019-04-09 | 郭其祥 | A kind of mechanically-sealing apparatus |
-
2018
- 2018-08-28 CN CN201810986698.7A patent/CN108775401B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201661684U (en) * | 2010-03-23 | 2010-12-01 | 安景坡 | Compound friction type sealing device |
| CN103836200A (en) * | 2012-11-26 | 2014-06-04 | 湖北双环科技股份有限公司 | Sealing device for calcinator steam inlet shaft |
| CN103591012A (en) * | 2013-11-12 | 2014-02-19 | 成都科盛石油科技有限公司 | Sealing device capable of being adjusted automatically |
| CN103899757A (en) * | 2014-04-08 | 2014-07-02 | 蓝小玲 | Rotary cylinder seal device |
| CN106594282A (en) * | 2015-10-19 | 2017-04-26 | 南京凯盛国际工程有限公司 | Sealing device capable of automatically compensating abrasion loss |
| CN208719353U (en) * | 2018-08-28 | 2019-04-09 | 郭其祥 | A kind of mechanically-sealing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108775401A (en) | 2018-11-09 |
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