CN203836227U - Labyrinth airflow seal - Google Patents
Labyrinth airflow seal Download PDFInfo
- Publication number
- CN203836227U CN203836227U CN201420222775.9U CN201420222775U CN203836227U CN 203836227 U CN203836227 U CN 203836227U CN 201420222775 U CN201420222775 U CN 201420222775U CN 203836227 U CN203836227 U CN 203836227U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- ring
- labyrinth
- air cavity
- airtight
- 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
Links
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a labyrinth airflow seal. The labyrinth airflow seal comprises a moving ring. The moving ring is fastened to a main shaft through a nut after being arranged in the main shaft in a sleeved mode. An air chamber is arranged in the lower end of the moving ring. A cavity is formed between the air chamber and the main shaft after the air chamber is arranged in the main shaft in a sleeved mode. The air chamber is provided with a through hole penetrating through the air chamber. A nozzle of a pressure pipe straight joint extends into the through hole. An airtight cover ring is installed at the lower end of the air chamber. An airtight ring is further arranged between the airtight cover ring and the main shaft. According to the labyrinth airflow seal, the principles of centrifugal force and differential pressure are utilized in the using process, flow direction of air in a crushing cavity is changed, forcible flow guidance is conducted to block suspended particles inside a working chamber, the leakage quantity is quite small, and the probability that external parts lose efficacy due to dust is greatly reduced. The labyrinth airflow seal is quite remarkable in dust prevention effect, and is suitable for various types of dry process breaking (crushing) equipment. The labyrinth airflow seal is quite excellent in dust isolation effect. The labyrinth airflow seal greatly reduces maintenance cost of the breaking (crushing) equipment, so that maintenance frequency is reduced, and maintenance cost is also reduced.
Description
Technical field
It is air current sealed that the utility model relates to a kind of labyrinth, belongs to machinery seal arrangement technical field.
Background technique
The gland seal device of a kind of rotating machinery of Mechanical Sealed Type, such as equipment such as centrifugal pump, centrifuge, reactor and compressors.Because transmission shaft is applied in inside and outside equipment, between axle and equipment, there is like this circumferential clearance, medium in equipment passes through this gap to outward leakage, if equipment internal pressure is lower than barometric pressure, air pushes in equipment, if equipment internal pressure is higher than barometric pressure, internal flows, to equipment outward leakage, therefore must have a gland seal device that stops leakage.But for powder machinery industry, for shaft seal, be all the problem of a bad solution all the time, for superfine powder process equipment, can not effectively control leaking of dust-containing airflow and will have a lot of production safety hidden danger and environmental pollution.The sealing means of conventional powder machinery work rotating shaft adopts backbone sealing ring and seal ring substantially, but disintegrating apparatus can produce a large amount of dust in the course of the work, these dust are along with air is all-pervasive, there iing the region that Sealing is set can form accumulation, the piecemeal grease combination with sealing position of these deposits meetings, the final oil clot that forms, sealing oil film originally lost efficacy, powder can enter between seal ring or seal ring, powder itself is again a kind of abrasive material, in this process, powder and Sealing friction, make the gap of Sealing and axle grind larger and larger, ultimate failure.
Summary of the invention
The purpose of this utility model is: provide a kind of labyrinth air current sealed, solved the sealing problem existing in existing disintegrating apparatus technology.
The technical solution of the utility model: a kind of labyrinth is air current sealed, include rotating ring, after moving ring sleeve enters main shaft and by fastening nuts on main shaft, the lower end of rotating ring is provided with air cavity, after air cavity is inserted in main shaft and between main shaft, form a cavity, be provided with a through hole that connects air cavity on air cavity, the nozzle of pressure tube straight joint extend in through hole, in the lower end of air cavity, airtight bezel ring, is installed, between airtight bezel ring, and main shaft, is also provided with 1 airtight circle.
Above-mentioned labyrinth is air current sealed, has also been inserted in bottom surface stationary ring on the main shaft between described rotating ring and air cavity, and air cavity is fixed on the stationary ring of bottom surface by socket head screw.
Above-mentioned labyrinth is air current sealed, forms upper and lower concavo-convex staggered annular space band between described bottom surface stationary ring and rotating ring.
Above-mentioned labyrinth is air current sealed, has also been inserted in reinforced seal lid on the main shaft of described airtight bezel ring, lower end, and reinforced seal lid is fixedly inserted in backbone sealing ring on main shaft, and air cavity, airtight bezel ring,, reinforced seal lid are fixed by screws in together.
The beneficial effects of the utility model: used centrifugal force and principle of differential pressure in the utility model using process, changed the flow direction of air in crusher chamber, force water conservancy diversion that its suspended particulate is intercepted in active chamber, allow amount of leakage become very little, greatly reduce the possibility that exterior part lost efficacy because dust enters.Structure dust-proof effect of the present utility model is very outstanding, is applicable to broken (powder) the broken equipment of all kinds of dry process.Isolated effect to micronic dust is very outstanding.This structure greatly reduces brokenly the maintenance cost of (powder) broken equipment, owing to adopting pressure reduction air current sealed in structure, so there is no easily damaged parts, is increased the working time of equipment, and frequency of maintenance reduces, and maintenance cost reduces.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Reference character: 1-main shaft, 2-rotating ring, 3-bottom surface stationary ring, 4-air cavity, 5-socket head screw, 6-pressure tube straight joint, 7-nozzle, the airtight circle of 8-, the airtight bezel ring, of 9-, 10-backbone sealing ring, 11-reinforced seal lid.
Embodiment
Embodiment of the present utility model: a kind of labyrinth is air current sealed, as shown in Figure 1, include 1 rotating ring 2, rotating ring 2 is inserted in main shaft 1, and tighten together with main shaft 1 by nut, on the main shaft 1 of rotating ring 2 lower ends, be inserted in air cavity 4, after air cavity 4 is inserted in main shaft 1 and between main shaft, form a cavity, on air cavity 4, be provided with 1 and connect the inside and outside through hole of air cavity 4, the nozzle 7 of pressure tube straight joint 6 extend in through hole, airtight bezel ring, 9 is installed in the lower end of air cavity 4, between airtight bezel ring, 9 and main shaft 1, is also provided with 1 airtight circle 8.Main shaft 1 High Rotation Speed during work, rotating ring 2 and the mutual High Rotation Speed of air cavity 4, form certain centrifugal field, and so centrifugal position can be avoided particle micronic dust to enter in substructure going, thereby makes equipment normal operation.Source of the gas enters in air cavity 4 by nozzle 7 jets after by pressure tube straight joint 6, in cavity between air cavity 4 and main shaft 1, form certain pressure, inside and outside differential pressure keeps 0.1mpa, pressurized gas in air cavity 4 is blown out in crusher chamber by the gap between rotating ring 2 and air cavity 4, and the micronic dust that makes to suspend is had no idea to enter into substructure and gone.
On main shaft 1 between rotating ring 2 and air cavity 4, be also inserted in bottom surface stationary ring 3, air cavity 4 is fixed on bottom surface stationary ring 3 by socket head screw 5, forms upper and lower concavo-convex staggered annular space band between bottom surface stationary ring 3 and rotating ring 2.The granule dust that such annular space band can intercept crusher chamber effectively enters into bottom.
On the main shaft 1 of airtight bezel ring, 9 lower ends, be also inserted in reinforced seal lid 11, reinforced seal lid 11 is fixedly inserted in backbone sealing ring 10 on main shaft 1, and air cavity 4, airtight bezel ring, 9, reinforced seal lid 11 are fixed by screws in together.Thereby increase its sealability, sealing effect is better.
Claims (4)
1. a labyrinth is air current sealed, it is characterized in that: include rotating ring (2), rotating ring (2) is inserted in after main shaft (1) and by fastening nuts on main shaft (1), the lower end of rotating ring (2) is provided with air cavity (4), after air cavity (4) is inserted in main shaft (1) and between main shaft, form a cavity, on air cavity (4), be provided with a through hole that connects air cavity (4), the nozzle (7) of pressure tube straight joint (6) extend in through hole, in the lower end of air cavity (4), airtight bezel ring, (9) is installed, between airtight bezel ring, (9) and main shaft (1), be also provided with 1 airtight circle (8).
2. labyrinth according to claim 1 is air current sealed, it is characterized in that: on the main shaft (1) between described rotating ring (2) and air cavity (4), be also inserted in bottom surface stationary ring (3), air cavity (4) is fixed on bottom surface stationary ring (3) by socket head screw (5).
3. labyrinth according to claim 2 is air current sealed, it is characterized in that: between described bottom surface stationary ring (3) and rotating ring (2), form upper and lower concavo-convex staggered annular space band.
4. labyrinth according to claim 1 is air current sealed, it is characterized in that: on the main shaft (1) of described airtight bezel ring, (9) lower end, be also inserted in reinforced seal lid (11), reinforced seal lid (11) is fixedly inserted in backbone sealing ring (10) at main shaft (1) upper, and air cavity (4), airtight bezel ring, (9), reinforced seal lid (11) are fixed by screws in together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222775.9U CN203836227U (en) | 2014-05-04 | 2014-05-04 | Labyrinth airflow seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222775.9U CN203836227U (en) | 2014-05-04 | 2014-05-04 | Labyrinth airflow seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203836227U true CN203836227U (en) | 2014-09-17 |
Family
ID=51514069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420222775.9U Expired - Fee Related CN203836227U (en) | 2014-05-04 | 2014-05-04 | Labyrinth airflow seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203836227U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151113A (en) * | 2015-10-22 | 2015-12-16 | 芜湖恒隆汽车转向系统有限公司 | Gear and rack type power steering gear sealing structure |
| CN105292236A (en) * | 2015-10-22 | 2016-02-03 | 芜湖恒隆汽车转向系统有限公司 | Pinion-and-rack power steering gear sealing structure |
| CN112548672A (en) * | 2020-12-23 | 2021-03-26 | 青岛高测科技股份有限公司 | Novel grease lubrication main shaft for multi-wire cutting machine |
-
2014
- 2014-05-04 CN CN201420222775.9U patent/CN203836227U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105151113A (en) * | 2015-10-22 | 2015-12-16 | 芜湖恒隆汽车转向系统有限公司 | Gear and rack type power steering gear sealing structure |
| CN105292236A (en) * | 2015-10-22 | 2016-02-03 | 芜湖恒隆汽车转向系统有限公司 | Pinion-and-rack power steering gear sealing structure |
| CN112548672A (en) * | 2020-12-23 | 2021-03-26 | 青岛高测科技股份有限公司 | Novel grease lubrication main shaft for multi-wire cutting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203604655U (en) | Combined sealing structure of main bearing of roller press | |
| CN203023297U (en) | Labyrinth seal structure of main shaft bearing of double-geared roller crusher | |
| CN203836227U (en) | Labyrinth airflow seal | |
| CN101551016A (en) | Shaft sealing device for high-temperature pressure-proof star-type feeder | |
| CN105545795A (en) | Novel water cooling acid-resistant, alkali-resistant and high-temperature-resistant packaged type mechanical seal | |
| CN105387209A (en) | Low-speed rotary sealing device | |
| CN110681498A (en) | Explosion-proof type decanter centrifuge based on carbocycle is sealed | |
| CN102588602B (en) | centrifuge bearing composite sealing device | |
| CN204208658U (en) | The automatic dustproof control system of disintegrating machine | |
| CN206972603U (en) | A kind of slurry mechanical sealing device used for pump | |
| CN210949878U (en) | Sealing structure of front bearing chamber of electric spindle | |
| CN202460559U (en) | Stirring shaft sealing device capable of preventing sand from entering | |
| CN204420124U (en) | A kind of Novel vertical mill shaft of grinding roller bearing sealing device | |
| CN206246683U (en) | Sealing device before a kind of horizontal type scraper centrifuger main shaft | |
| CN201694623U (en) | Spiral conveyor | |
| CN202316130U (en) | Main shaft sealing device of vertical centrifugal machine | |
| CN205001515U (en) | Design has bearing seal of labyrinth seals structure | |
| CN204186622U (en) | Twin-stage axial flow dedusting fan | |
| CN103090009A (en) | Pneumatic sealing device of pulverizer | |
| CN204061912U (en) | Seal ring and coal pulverizer | |
| CN103301922A (en) | Full-sealed type slag discharging system of coal mill | |
| CN207266866U (en) | Gyratory Crusher Gear Box Dust-proof Sealing Device | |
| CN202431504U (en) | Floating sealing device for vertical pump | |
| CN207093132U (en) | A kind of annular water jet of development machine | |
| CN217633072U (en) | Centrifugal compressor unit dry air sealing device with isolation anti-pollution function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140917 Termination date: 20210504 |