CN218368248U

CN218368248U - Novel rotary sealing device for ship tail shaft

Info

Publication number: CN218368248U
Application number: CN202222741795.4U
Authority: CN
Inventors: 周树明; 景高伟
Original assignee: Dongtai Youming Marine Fittings Co ltd
Current assignee: Dongtai Youming Marine Fittings Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2023-01-24
Anticipated expiration: 2032-10-18

Abstract

The utility model belongs to the technical field of boats and ships tail shaft rotary seal, especially, relate to a novel rotary seal is used to boats and ships tail shaft device, including the axle sleeve, the inside propeller shaft that is provided with of axle sleeve, the through-hole has been seted up to the axle sleeve surface, axle sleeve surface mounting has the oil feed structure, the axle sleeve right-hand member is connected with fixed steel ring, fixed steel ring right side is connected with fixing bolt, the inside ring channel of having seted up of fixed steel ring, ring channel internally mounted has the pressure feed structure, the inside outer rubber seal that is provided with of ring channel. This novel rotary sealing device for boats and ships tailing axle through the setting of pressure feed structure, makes the propeller shaft produce wearing and tearing when rotating after to the rubber circle, utilizes the deformation power of spring to exert pressure to the outer rubber seal who receives after wearing and tearing, guarantees the leakproofness of outer rubber seal to the device at any time.

Description

Novel rotary sealing device for ship tail shaft

Technical Field

The utility model relates to a boats and ships tailing axle rotary seal technical field specifically is a novel rotary seal for boats and ships tailing axle device.

Background

The tail shaft of the large ship is arranged on two bearings. A stern bearing, namely the part of the ship body contacted with water; the other bearing is called a front bearing and is connected with the engine room, and a tail shaft room is arranged between the front bearing and the rear bearing and is basically closed. The stern shaft and the ship body are sealed by sealing rings arranged beside the front bearing and the rear bearing, and the sealing rings are a circle of closed rubber rings and are sleeved on the shaft. Generally, the front bearing and the rear bearing are provided with a plurality of sealing rings, the two sealing rings are filled with oil, the oil is discharged from an oil tank with a certain height, namely a gravity oil tank, the water pressure can be balanced, the oil can lubricate the sealing rings, and the abrasion speed of the rubber rings is reduced.

In the prior art, two sealing modes of a metal ring oil seal and a rubber oil seal are generally adopted, but the main sealing part of the metal oil seal device is in direct contact with the tail shaft and is sealed by depending on the tightness between structures, so that inevitable abrasion can be caused to the tail shaft.

In order to solve the problem of abrasion of a metal oil seal device to a tail shaft, the prior art adopts a rubber oil seal mode to process, but the rubber oil seal also considers the situation that abrasion can occur in the use process of rubber, and then the problem of oil leakage easily occurs to the sealing device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel rotary seal device for boats and ships tailing axle to solve the oil leak problem that the easy wearing and tearing of rubber oil blanket rubber appear at the rotatory in-process of boats and ships tailing axle that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel boats and ships are rotary seal device for tailshaft, includes the axle sleeve, the inside propeller shaft that is provided with of axle sleeve, the through-hole has been seted up to the axle sleeve surface, axle sleeve surface mounting has the oil feed structure.

The right end of the shaft sleeve is connected with a fixed steel ring, the right side of the fixed steel ring is connected with a fixing bolt, an annular groove is formed in the fixed steel ring, a pressure feeding structure is installed in the annular groove, and an outer rubber sealing ring is arranged in the annular groove.

Preferably, the pressure feeding structure comprises a spring fixing ring, a spring is fixedly connected inside the spring fixing ring, and a pressing sheet is fixedly connected to one end, close to the propeller shaft, of the spring.

Preferably, the oil inlet structure comprises a left oil inlet, a main oil inlet is fixedly installed in the middle of the outer surface of the shaft sleeve, and a right oil inlet is fixedly installed at the right end of the outer surface of the shaft sleeve.

Preferably, the annular groove has been seted up to the inside left end of axle sleeve, the inside left rubber seal that is provided with of annular groove, the annular groove has been seted up to the inside right-hand member of axle sleeve, the inside right rubber seal that is provided with of annular groove.

Preferably, the bottom surface of the pressing sheet is abutted against the outer surface of the outer rubber sealing ring, and the inner part of the outer rubber sealing ring is in sliding connection with the outer surface of the propeller shaft. After the rubber sealing ring is worn, the rubber sealing ring can be replenished and contacted by the pressure exerted by the spring, and the sealing state is always kept.

Preferably, the right side of the shaft sleeve is provided with a threaded hole, the right side of the fixed steel ring is provided with a threaded through hole, the shaft sleeve is in threaded connection with the fixed steel ring through a fixed bolt, and the number of the fixed steel rings is two and the fixed steel rings are respectively in threaded connection with the left side and the right side of the shaft sleeve.

Preferably, the outer surfaces of the right rubber sealing ring and the left rubber sealing ring are abutted to the inside of the shaft sleeve, and the inner walls of the right rubber sealing ring and the left rubber sealing ring are in sliding connection with the outer surface of the propeller shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this novel boats and ships are rotary seal device for tailshaft through the setting of pressure feed structure, makes the propeller shaft produce wearing and tearing the back to the rubber ring when rotating, utilizes the deformation power of spring to exert pressure to the outer rubber seal who receives after wearing and tearing, guarantees the leakproofness of outer rubber seal to the device at any time.

2. This novel rotary sealing device for boats and ships tailing axle, right rubber seal circle divide into three sealed oil storage with the device with left rubber seal circle, and three oil storage is provided with respective oil inlet respectively, and when the oil of oil storage internal seal usefulness had the consume, can be at any time to the supply in the oil storage for guarantee the leakproofness of tailing axle. And to equalize the pressure of the external water.

Drawings

Fig. 1 is a schematic view of the appearance structure of the present invention;

fig. 2 is a schematic diagram of the right-side view structure of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is a schematic view of the internal structure of the present invention;

fig. 5 is an enlarged view of the structure at a in fig. 2.

In the figure: 1. a shaft sleeve; 2. an oil inlet structure; 201. a left oil inlet; 202. a main oil inlet; 203. a right oil inlet; 3. fixing a steel ring; 301. fixing the bolt; 302. an outer rubber seal ring; 4. a pressure feed structure; 401. a spring retainer ring; 402. a spring; 403. tabletting; 5. a right rubber seal ring; 501. a left rubber seal ring; 6. a propeller shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a novel boats and ships are rotary seal device for tailshaft, includes

axle sleeve

1, 1 inside propeller shaft 6 that is provided with of axle sleeve, and the through-hole has been seted up to 1 surface of axle sleeve, and 1 surface mounting of axle sleeve has oil feed structure 2. 1 right-hand member of axle sleeve is connected with fixed steel ring 3, and the 3 right sides of fixed steel ring are connected with fixing bolt 301, and threaded hole has been seted up to 1 right side of axle sleeve, and threaded through-hole has been seted up to 3 right sides of fixed steel ring, and axle sleeve 1 passes through fixing bolt 301 threaded connection with fixed steel ring 3, and fixed steel ring 3 has two, threaded connection is on the left side and the right side of axle sleeve 1 respectively. An annular groove is formed in the fixed steel ring 3, a pressure feed structure 4 is installed in the annular groove, and an outer rubber sealing ring 302 is arranged in the annular groove. The pressure feeding structure 4 comprises a spring fixing ring 401, a spring 402 is fixedly connected inside the spring fixing ring 401, and a pressing sheet 403 is fixedly connected to one end of the spring 402 close to the propeller shaft 6. The bottom surface of the pressing piece 403 abuts against the outer surface of the outer rubber seal 302, and the inside of the outer rubber seal 302 is slidably connected to the outer surface of the propeller shaft 6. Through the arrangement of the pressure feeding structure 4, after the propeller shaft 6 abrades the rubber ring during rotation, the abraded outer rubber sealing ring 302 is stressed by the deformation force of the spring, and the sealing performance of the outer rubber sealing ring 302 on the device is ensured at any time. The oil inlet structure 2 comprises a left oil inlet 201, a main oil inlet 202 is fixedly installed in the middle of the outer surface of the shaft sleeve 1, and a right oil inlet 203 is fixedly installed at the right end of the outer surface of the shaft sleeve 1. The ring channel has been seted up to the inside left end of axle sleeve 1, and the inside left rubber seal 501 that is provided with of ring channel, the ring channel has been seted up to the inside right-hand member of axle sleeve 1, and the inside right rubber seal 5 that is provided with of ring channel. The outer surfaces of the right rubber sealing ring 5 and the left rubber sealing ring 501 are abutted with the inner part of the shaft sleeve 1, and the inner walls of the right rubber sealing ring 5 and the left rubber sealing ring 501 are connected with the outer surface of the propeller shaft 6 in a sliding manner. The right rubber sealing ring 5 and the left rubber sealing ring 501 divide the device into three sealed oil bins, the three oil bins are respectively provided with respective oil inlets, and when oil used for sealing in the oil bins is consumed, the oil can be supplied to the oil bins at any time so as to ensure the sealing performance of the stern shaft. And to balance the pressure of the external water.

When the sealing device is used, the left rubber sealing ring 501 and the right rubber sealing ring 5 are respectively placed in annular grooves at the left end and the right end in the shaft sleeve 1, the outer rubber sealing ring 302 is placed in an annular groove in the fixed steel ring 3, the pressing sheet 403 moves towards one side of the spring fixing ring 401, the spring 402 deforms, the spring 402 is pressed, the fixed steel ring 3 is in threaded connection with the left side and the right side of the shaft sleeve 1 through the fixing bolt 301, rubber gaskets with the same size are arranged in the contact surface of the fixed steel ring 3 and the shaft sleeve 1 and used for sealing, a proper amount of lubricating oil for sealing is respectively injected into 3 oil bins through the main oil inlet 202, the left oil inlet 201 and the right oil inlet 203, when the propeller shaft 6 rotates to wear the outer rubber sealing ring 302, the pressing sheet 403 can be pushed by force generated by deformation of the spring 402, and the pressing sheet 403 is abutted to the outer rubber sealing ring 302, so that gaps generated by wear of the outer rubber sealing ring 302 can be timely replenished and sealed, and the sealing performance can be better ensured.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element described by the phrase "comprising a. -" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides a novel boats and ships are rotary seal device for tailshaft, includes axle sleeve (1), axle sleeve (1) inside is provided with propeller shaft (6), its characterized in that: the outer surface of the shaft sleeve (1) is provided with a through hole, and the outer surface of the shaft sleeve (1) is provided with an oil inlet structure (2);

the shaft sleeve is characterized in that a fixed steel ring (3) is connected to the right end of the shaft sleeve (1), a fixing bolt (301) is connected to the right side of the fixed steel ring (3), an annular groove is formed in the fixed steel ring (3), a pressure feed structure (4) is installed in the annular groove, and an outer rubber sealing ring (302) is arranged in the annular groove.

2. The novel rotary sealing device for the ship tail shaft according to claim 1, characterized in that: the pressure feeding structure (4) comprises a spring fixing ring (401), a spring (402) is fixedly connected inside the spring fixing ring (401), and a pressing sheet (403) is fixedly connected to one end, close to the propeller shaft (6), of the spring (402).

3. The novel rotary sealing device for the ship tail shaft according to claim 1, characterized in that: the oil inlet structure (2) comprises a left oil inlet (201), a main oil inlet (202) is fixedly installed in the middle of the outer surface of the shaft sleeve (1), and a right oil inlet (203) is fixedly installed at the right end of the outer surface of the shaft sleeve (1).

4. The novel rotary sealing device for the ship tail shaft according to claim 1, characterized in that: the annular groove has been seted up to the inside left end of axle sleeve (1), the inside left rubber seal (501) that is provided with of annular groove, the annular groove has been seted up to the inside right-hand member of axle sleeve (1), the inside right rubber seal (5) that is provided with of annular groove.

5. The novel rotary sealing device for the ship tail shaft according to claim 2, characterized in that: the bottom surface of the pressing sheet (403) is abutted against the outer surface of the outer rubber sealing ring (302), and the inner part of the outer rubber sealing ring (302) is in sliding connection with the outer surface of the propeller shaft (6).

6. The novel rotary sealing device for the ship tail shaft according to claim 1, characterized in that: the right side of the shaft sleeve (1) is provided with a threaded hole, the right side of the fixed steel ring (3) is provided with a threaded through hole, the shaft sleeve (1) is in threaded connection with the fixed steel ring (3) through a fixing bolt (301), and the number of the fixed steel rings (3) is two, and the two fixed steel rings are respectively in threaded connection with the left side and the right side of the shaft sleeve (1).

7. The novel rotary sealing device for the ship tail shaft according to claim 4, characterized in that: the right rubber sealing ring (5) and the outer surface of the left rubber sealing ring (501) are abutted with the inner part of the shaft sleeve (1), and the inner wall of the right rubber sealing ring (5) and the inner wall of the left rubber sealing ring (501) are connected with the outer surface of the propeller shaft (6) in a sliding manner.