CN2364276Y - Stern sealing device - Google Patents
Stern sealing device Download PDFInfo
- Publication number
- CN2364276Y CN2364276Y CN 98222883 CN98222883U CN2364276Y CN 2364276 Y CN2364276 Y CN 2364276Y CN 98222883 CN98222883 CN 98222883 CN 98222883 U CN98222883 U CN 98222883U CN 2364276 Y CN2364276 Y CN 2364276Y
- Authority
- CN
- China
- Prior art keywords
- spring
- pneumatic tyre
- stationary ring
- ring assembly
- stern shaft
- 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 Devices (AREA)
Abstract
The utility model relates to a stern shaft sealing device which is provided with a casing body, a movable ring assembly, a stationary ring assembly, an elastic compensation mechanism, an inflating pneumatic tire device and a cooling device, wherein, the casing body is divided into a front part and a back part, an inner cavity of the back casing is provided with the inflating pneumatic tire device, a spring seat is arranged in the front casing, the outer diameter of the spring seat is sheathed with a spring and the stationary ring assembly, the stationary ring assembly is connected with the front casing through a convex rubber cylinder in a floating mode, and the convex rubber cylinder and the spring form the elastic compensation mechanism. The utility model has the advantages of reasonable structure, good tightness, reliable work and strong applicability, can used for emergency maintenance on water and is an ideal stern shaft sealing device for ships.
Description
The utility model relates to a kind of seal arrangement, specifically a kind of stern shaft seal gland.
We know, all exist the sealing problem of mechanical rotation axle on many machinery.At present, middle-size and small-size naval vessel stern shaft seal adopts stuffing box structure, soft packing seal more.Because it is soft packing directly contacts with stern tube shaft, and keeps suitable impacting force, overheated owing to rubbing in the stern tube shaft operation process for preventing filler, must allow an amount of seawater leaks, safeguarded not at that time when filler especially that corresponding diameter of axle position very easily ground groove, and caused leaking and increase sharply.In the cabin, can cause ponding like this, cause electromechanical equipment to make moist, decreased performance, it is malfunctioning to work, and jeopardizes warship safety.End face seal is more advanced a kind of seal form, and it mainly is made of static components and moving ring assembly, closely contacts and seals by rotating ring, stationary ring end face, and stationary ring is provided with elastic compensating mechanism.For easy to maintenance, the stern tube shaft face seals that also has has increased inflation pneumatic tyre device, and its preparation process is strict, needs with many special devices and frock clamping, and cost is very high.
The purpose of this utility model is exactly to provide a kind of rational in infrastructure in order to overcome the deficiency of above-mentioned prior art, good seal performance, and reliable operation, adaptability is strong, adjusts the stern shaft seal gland with emergency maintenance under the situation that can not lie up on the naval vessel.
For achieving the above object, a kind of stern shaft seal gland, it is provided with housing, moving ring assembly, static components, elastic compensating mechanism, inflation pneumatic tyre device, cooling unit, it is characterized in that housing is divided in two parts, the rear case inner chamber is equipped with inflation pneumatic tyre device, and spring seat is housed in the front case, and spring seat circumferentially is equipped with spring, front end sleeve is equipped with static components, and the stationary ring body of static components floats by a convex rubber tube with the front case outside and is connected.Convex rubber tube and spring are formed elastic compensating mechanism jointly.
The utility model elastic compensating mechanism is made up of some equally distributed springs and rubber tube, and rubber tube not only seals vibration damping, plays the elastic compensating effect simultaneously.This new compensation mechanism has good automatic regulatory function, can guarantee that the rotating ring end face is close to the stationary ring end face all the time, thereby play good sealing effect.
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model structural representation.
As can be seen from Figure 1, a kind of stern shaft seal gland, it is made up of housing, inflation pneumatic tyre device, static components, moving ring assembly, elastic compensating mechanism etc.Static components includes stationary ring body 5, stationary ring 4, and moving ring assembly includes slips 1, rotating ring body 2, rotating ring 3.Interference is connected and fixed between rotating ring and rotating ring body, stationary ring and the stationary ring body.Housing is made up of front case 9 and rear case 10 two-part, and they all are sleeved on the stern tube shaft.Rear case 10 is close to the attached plate in next door, cabin and is fixed, and inflation pneumatic tyre device is housed in the rear case, and it is provided with rubber pneumatic tyre 12, and selects for use stainless steel ring 11 to do skeleton.The stainless steel ring two ends are evagination R shape, and the rubber pneumatic tyre that matches with it is indent R shape, and both form an airtight air chamber.When air chamber was inflated, the rubber pneumatic tyre was embraced stern tube shaft, thereby stoped seawater to bleed in the ship.Inflation pneumatic tyre device just uses when seal arrangement keeps in repair, and can adjust and emergency maintenance seal arrangement under the situation that ships does not lie up.
The utility model front case 9 also is sleeved on the stern tube shaft, is fastened on by screw on the flange of rear case, and a spring seat 8 is housed in the front case, and spring seat 8 internal diameters and stern tube shaft copper sheathing periphery are provided with certain interval.Cover is equiped with stationary ring body 5 and spring 6 on the spring seat external diameter, and spring 6 can select for use 12-24 only, and it circumferentially is evenly distributed on the spring seat, gives the stationary ring body with end thrust.The utility model static components adopts to float with front case and is connected, and is with the two organic coupling together, fastening by pipe collar before and after the convex rubber tube by convex rubber tube 7.The effect of convex rubber tube seals vibration damping on the one hand, plays the elastic compensating effect together with spring 6 on the other hand.Convex rubber tube 7 and the spring 6 common elastic compensating mechanisms that form, it has good automatic regulatory function, makes the stationary ring 4 of static components keep contacting closely with rotating ring 3 end faces all the time, no matter state of rest or motion state.Also be provided with a cooling unit 13 on the utility model front case, inject cooling water the cooling hole from front case, cooling water enters the front case inner cavity, then enters between dynamic and static ring member, and dynamic and static ring member is fully cooled off, and the dynamic and static ring life-span is prolonged.
The utility model moving ring assembly includes slips 1, rotating ring body 2, rotating ring 3, and on slips 1, slips 1 is fastened on the stern tube shaft copper sheathing rotating ring body 2, rotates with axle by screw.Rotating ring 3 is assemblied on the rotating ring body 2 by a rubber pad interference, and the servo-actuated ring body rotates together.Rotating ring 3 and stationary ring 4 adopts the alloy material of hardness height, wear-resisting, fine corrosion resistance, and it is fixed on rotating ring body and the stationary ring body, and sealability and working life are improved greatly.
The utility model is rational in infrastructure, good seal performance, and reliable operation, adaptability is strong, can carry out emergency maintenance on the water, is a kind of desirable stern shaft seal gland.
Claims (4)
1, a kind of stern shaft seal gland, it is provided with housing, moving ring assembly, static components, elastic compensating mechanism, inflation pneumatic tyre device, cooling unit, it is characterized in that housing is divided in two parts, the rear case inner chamber is equipped with inflation pneumatic tyre device, spring seat is housed in the front case, spring seat circumferentially is equipped with spring, and front end sleeve is equipped with static components, and the stationary ring body of static components floats by a convex rubber tube with the front case outside and is connected.
2, stern shaft seal gland as claimed in claim 1 is characterized in that said elastic compensating mechanism is made up of circumferential uniform spring and convex rubber tube.
3, stern shaft seal gland as claimed in claim 1 is characterized in that said inflation pneumatic tyre device is made up of rubber pneumatic tyre and stainless steel ring, and the stainless steel ring two ends are evagination R shape, and the rubber pneumatic tyre is indent R shape.
4, stern shaft seal gland as claimed in claim 1 is characterized in that the rotating ring of said moving ring assembly and the stationary ring of static components adopt Hardmetal materials, and they are separately fixed on rotating ring body and the stationary ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98222883 CN2364276Y (en) | 1998-11-06 | 1998-11-06 | Stern sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98222883 CN2364276Y (en) | 1998-11-06 | 1998-11-06 | Stern sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2364276Y true CN2364276Y (en) | 2000-02-16 |
Family
ID=33974110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98222883 Expired - Fee Related CN2364276Y (en) | 1998-11-06 | 1998-11-06 | Stern sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2364276Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650283A (en) * | 2016-01-19 | 2016-06-08 | 张衎 | Emergency waterproof device for bearing for ship and bearing provided with device |
| CN105805318A (en) * | 2016-04-22 | 2016-07-27 | 渠帅 | Sealing assembly of mining double-chain scraper conveyer |
| CN109578590A (en) * | 2018-12-28 | 2019-04-05 | 洛普兰机械设备(宁波)有限公司 | A kind of hydraulic propeller axis mechanical seal |
-
1998
- 1998-11-06 CN CN 98222883 patent/CN2364276Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650283A (en) * | 2016-01-19 | 2016-06-08 | 张衎 | Emergency waterproof device for bearing for ship and bearing provided with device |
| CN105805318A (en) * | 2016-04-22 | 2016-07-27 | 渠帅 | Sealing assembly of mining double-chain scraper conveyer |
| CN109578590A (en) * | 2018-12-28 | 2019-04-05 | 洛普兰机械设备(宁波)有限公司 | A kind of hydraulic propeller axis mechanical seal |
| CN109578590B (en) * | 2018-12-28 | 2023-10-03 | 洛普兰机械设备(宁波)有限公司 | Mechanical seal for water spraying propeller shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |