CN201517609U

CN201517609U - Water-lubricated stern shaft end surface sealing device

Info

Publication number: CN201517609U
Application number: CN200920235835XU
Authority: CN
Inventors: 沈存斌; 蒋爱国; 司马瑞龙
Original assignee: DONGTAI YUANYANG SHIP PARTS Co Ltd
Current assignee: DONGTAI YUANYANG SHIP PARTS Co Ltd
Priority date: 2009-10-12
Filing date: 2009-10-12
Publication date: 2010-06-30
Anticipated expiration: 2019-10-12

Abstract

The utility model discloses a water-lubricated stern shaft end surface sealing device which comprises a fixing base, a pneumatic tyre, a gland, a wear shaft sleeve, an end surface sealing cover, a sealing ring and a spare sealing ring, wherein the wear shaft sleeve is fixedly connected with the stern shaft through an inner hole thereof, the wear shaft sleeve penetrates through the whole sealing device, the end surface sealing cover adopts the split structure, and the spare sealing ring is sleeved on the wear shaft sleeve outside the whole sealing device. The end surface sealing device has the advantages of simple structure, long service life and convenient maintenance.

Description

Water lubrication stern tube shaft face seals

Technical field

The utility model relates to a kind of seaborne machinery, refers in particular to the water lubrication face seals that applies on the naval vessel stern tube shaft.

Background technique

In shipping industry, especially in the manufacture process on naval vessel, for preventing that seawater from penetrating in the cabin, just must carry out tight sealing to the stern tube shaft that passes body place, cabin in the propulsion system, guaranteeing the Safety performance on naval vessel, and current use on the naval vessel to its device that seals, its structure is: stern tube shaft passes whole fixed base, pneumatic tyre is installed in the nearly warship stern of the fixed base end die cavity by gland, directly is coated on the stern tube shaft after the pneumatic tyre inflation; One end of anti-wear sleeve is fixedly sleeved in the nearly warship bow of fixed base end die cavity on the part stern tube shaft, and the other end extends outside fixed base along stern tube shaft, and is fixedly connected with the clamping ring that is fixed on the stern tube shaft; Be positioned on the nearly warship bow of the fixed base end die cavity anti-wear sleeve, be socketed with working seal circle and backup seal regularly, also being socketed with structure on the anti-wear sleeve of the nearly warship bow of fixed base end end regularly is all-in-one-piece end face seal lid.

There is following defective in actual applications in the seal arrangement of this structure: on the one hand because of directly being coated on the stern tube shaft after the pneumatic tyre inflation, cause wearing and tearing under the situation that this has just caused in maintenance process or start is not closed the pneumatic tyre gas charging valve, reduced the working life of pneumatic tyre and stern tube shaft stern tube shaft; On the other hand because of end face seal lid is overall structure, the difficulty that has increased maintenance and changed, in case its wear and tear, can only integral replacing when influencing sealability, reduced the working life of seal arrangement; Another aspect increases the space of seal arrangement because of backup seal being arranged in the nearly warship bow of the fixed base end die cavity, and seal ring is direct and contact with sea water, easily corrodes, and has reduced the working life of seal ring, the simultaneously also corresponding frequency that has increased maintenance.

The model utility content

Technical problem to be solved in the utility model provides a kind of long service life, water lubrication stern tube shaft face seals easy to maintenance.

In order to solve the problems of the technologies described above, water lubrication stern tube shaft face seals of the present utility model comprises fixed base, pneumatic tyre, gland, anti-wear sleeve, end face seal lid, seal ring, backup seal, described anti-wear sleeve passes through whole sealing device, the endoporus and the stern tube shaft of anti-wear sleeve are fixedly connected, described end face seal lid is for breathing out the furan split type structure, and described backup seal is socketed on the anti-wear sleeve that places the outside nearly warship bow end of whole sealing device.

After adopting said structure, because anti-wear sleeve is set to pass through whole sealing device, and the endoporus and the stern tube shaft of anti-wear sleeve are fixedly connected, pneumatic tyre after the inflation just directly is coated on the anti-wear sleeve like this, avoided original, prolonged the working life of stern tube shaft because of the direct defective that causes the stern tube shaft wearing and tearing that contacts of pneumatic tyre with stern tube shaft; Simultaneously because the end face seal lid is set to split type structure, so on the one hand when end face seal lid serious wear, can unload the end face seal lid, again the processing back is reusable, thereby having overcome formed being not easy to of original overall structure keeps in repair and changes, and the defective of can only the integral replacing end face seal in case wear and tear, when influence sealability covering has and keeps in repair and change advantage easily and efficiently; On the other hand when needs are changed backup seal, end face seal can be covered split surface pulls down, after the seal ring removal that damages, again backup seal is pushed into the station of former seal ring, have seal ring is changed convenience, speed advantage efficiently, therefore this setting had both prolonged the working life of seal arrangement, was convenient to maintenance and replacing again; Again because backup seal is socketed on the anti-wear sleeve that places the outside nearly warship bow end of whole sealing device, so just backup seal and seawater are separated, having overcome original backup seal directly is immersed in the seawater and causes by the defective of seawater corrosion, prolonged the working life of backup seal, thereby, increase the seal arrangement service clearance simultaneously with regard to corresponding working life of improving whole sealing device.

A preferred implementation of the present utility model is that described fixed base endoporus is set to stepped through hole, in this stepped through hole pneumatic tyre, gland, seal ring is installed.By this structure the pneumatic tyre gland is changed into from stem to the stern direction to the bow direction from the ship stern by original, not only shortened fixed base length, saved material, also be more convenient for the installation and maintenance of seal arrangement.

Description of drawings

Below in conjunction with the drawings and specific embodiments water lubrication stern tube shaft face seals of the present utility model is described further.

Fig. 1 is the work structuring schematic representation of a kind of embodiment of the utility model water lubrication stern tube shaft face seals.

Among the figure, 1-fixed base, 2-gland, 3-O RunddichtringO, 4-end face seal lid, 5-seal ring, 6-backup seal, 7-stern tube shaft, 8-anti-wear sleeve, 9-pad, 10-pneumatic tyre, 11-spring.

Embodiment

In the water lubrication stern tube shaft face seals shown in the figure, anti-wear sleeve 8 after heating with stern tube shaft 7 interference fit mutually, pass through whole sealing device, fixed base 1 endoporus is set to the stepped shaft through hole, fixed base 1 nearly stem end end face is provided with O RunddichtringO 3, structure is that end face seal lid 4 hoops of subdivision form are connected on the anti-wear sleeve 8, match mutually with fixed base 1 end face by O RunddichtringO 3, played seal action, the end face seal lid 4 of this subdivision form, when end wear is serious, can make things convenient for, dismantle quickly, it is back reusable to utilize lathe that it is repaired, and has increased the working life of seal arrangement.Pneumatic tyre 10 is installed in fixed base 1, directly is coated on the anti-wear sleeve 8 after these pneumatic tyre 10 inflations, so just avoided the wearing and tearing of 10 pairs of stern tube shafts 7 of pneumatic tyre, prolonged the working life of stern tube shaft 7.Gland 2 is installed on the ladder surface by retaining screw, and pneumatic tyre 10 with the one lateral surface compressing, the another side of gland 2 then links with the seal ring 5 that is installed on the fixed base 1 interior part anti-wear sleeve 8, the sealing surface of seal ring 5 pastes mutually with end face seal lid 4, and on sealing circle 5, the groove of mounting spring 11 is increased, this is with regard to the corresponding area of contact of spring 11 with seal ring 5 that increased, make spring 11 captive closure circle 5 better, make the sealability of 8 of seal ring 5 and anti-wear sleeves more stable, therefore can be enclosed in firmly out of my cabin by the seawater that cabin is outer by sealing circle 5, played good sealing effect.On the anti-wear sleeve 8 of the outside nearly warship bow end of whole sealing device, backup seal 6 is installed, when fixed base 1 shoulder hole inner seal ring 5 damages, can be by unloading end face seal lid 4, after removing the seal ring 5 that has damaged, backup seal 6 is pushed into former seal ring 5 stations, can realizes replacing apace seal ring 5.Also show among the figure and be used for fixing seat 1 is connected usefulness with hull pad 9, and the loading line of pneumatic tyre 10 and maintenance seal ring 5 pressure balanced press water passage when working.

During work, by pad 9, the utilization bolt is closed the pneumatic tyre gas charging valve on hull with whole sealing device, by 5 pairs of seal rings out of my cabin seawater carrying out tight axially and end face seal, guaranteed whole sealability effectively.When need are changed seal ring 5 and end face seal lid 4 are keeped in repair, pneumatic tyre 10 gas charging valves are opened, coating anti-wear sleeve 8 after making pneumatic tyre 10 inflations, to seal seawater out of my cabin, so that carry out safe replacing and maintenance work.

Above-mentioned some preferred implementations of only enumerating the utility model water lubrication stern tube shaft face seals, but be not limited to this, under the situation of the utility model basic principle, also can do some conversion and improvement.For example, the backup seal that is socketed on the anti-wear sleeve not only is limited to one, also can be many; The seal ring of fixed base end face also not only is limited to the O RunddichtringO, also can be the end-face seal ring of other common type, and so on.So long as fixed base is set to ladder-type structure; Pneumatic tyre and gland are set to install to the stern direction from stem; The end face seal lid adopts the structural type of subdivision; Being provided with of groove increase with mounting spring on seal ring all is considered as falling into protection domain of the present utility model.

Claims

1. water lubrication stern tube shaft face seals, comprise fixed base (1), pneumatic tyre (10), gland (2), anti-wear sleeve (8), end face seal lid (4), seal ring (5), backup seal (6), it is characterized in that: described anti-wear sleeve (8) is fixedly connected by its endoporus and stern tube shaft (7), and this anti-wear sleeve (8) passes through whole sealing device; Described end face seal lid (4) adopts split type structure, and described backup seal (6) is socketed on the anti-wear sleeve (8) that places the whole sealing device outside.

2. water lubrication stern tube shaft face seals according to claim 1 is characterized in that: described fixed base (1) endoporus is set to stepped through hole, and pneumatic tyre (10), gland (2), seal ring (5) are installed in this stepped through hole.

3. water lubrication stern tube shaft face seals according to claim 1, it is characterized in that: described end face seal lid (4) bind round on the anti-wear sleeve that is connected on the nearly warship bow end place of fixed base (1) (8) regularly, and end face seal is covered (4) end face and fixed base (1) end face and matched connection mutually.

4. water lubrication stern tube shaft face seals according to claim 1 is characterized in that: described fixed base (1) and end face seal lid (4) end face of pairing place mutually is provided with the O RunddichtringO.

5. water lubrication stern tube shaft face seals according to claim 1 is characterized in that: on described seal ring (5) and backup seal (6), with the groove increase of mounting spring (11).