CN218085994U

CN218085994U - Multistage sealing device of boats and ships tail shaft sectional type

Info

Publication number: CN218085994U
Application number: CN202222695680.6U
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: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-12-20
Anticipated expiration: 2032-10-13

Abstract

The utility model belongs to the technical field of sealing device, especially, relate to a multistage sealing device of boats and ships tail-shaft sectional type, including the axle sleeve, the inside tail-shaft that is provided with of axle sleeve, the inside sealing device that is provided with of axle sleeve, first sealing washer are installed in the axle sleeve left side, and bolt threaded connection is on first sealing washer surface, and eccentric wheel fixed mounting is in one side that the tail-shaft surface is close to first sealing washer, and second sealing washer fixed mounting is in one side that the tail-shaft surface is close to the eccentric wheel, the inside alarm device that is provided with of axle sleeve. This multistage sealing device of boats and ships tailing axle sectional type seals the tailing axle through setting up sealing device to get into water is got rid of automatically, has solved that the unable timely discharge when inside intaking that proposes when using in the background art, needs the people to start drainage device and discharges, and inconvenient use's problem is monitored the condition of intaking through setting up alarm device, has avoided the staff to discover untimely cause the incident.

Description

Multistage sealing device of boats and ships tailing axle sectional type

Technical Field

The utility model relates to a sealing device technical field specifically is a multistage sealing device of boats and ships tailing axle sectional type.

Background

The ocean vessel is equipped with the seal device of the tail shaft in order to prevent the outboard water from flowing into the vessel along the propeller shaft and the lubricating oil from leaking to the outside of the vessel, the working condition of the seal device of the tail shaft of the vessel is very bad, when working, it is not only subject to the action of intense abrasion and high friction temperature, but also subject to the action of muddy water in the river, especially to the vessel with deeper draft, it is also subject to the action of pressure difference between higher water pressure and static pressure of lubricating oil, in addition, the propeller can produce cantilever and uneven load when revolving, which causes the radial run-out and eccentric movement amplitude of the tail shaft in the tail bearing to be larger. The main shaft seal of the rear transmission system of the ship is a special seal, and is characterized in that the shaft tube has a larger diameter and has larger transverse and axial vibration, the seal is required to have automatic centering capacity and adaptability to vibration, the tail shaft works in the environment of seawater or river water, the seawater has serious corrosivity, and the river water contains silt, so that the seal is adversely affected.

At present, the traditional lip rubber ring type seal is widely adopted in large and medium ships, the defects of a contact type sealing device are gradually exposed along with the large and high-speed ships, and due to the material and structure reasons, the seal is frequently damaged, so that oil leakage accidents are caused.

For example, chinese patent CN203585339U proposes a ship tail shaft sealing device, which adopts magnetic fluid sealing, has long service life, no abrasion, excellent working reliability and high performance: the extreme vacuum degree is 10-6Pa, the leakage rate is 10-12Pa.m3/sec, the high adaptability is realized, the requirements of various devices can be met from low speed to high speed, from low pressure to high pressure and from room temperature to high temperature, the environmental pollution caused by the leakage of lubricating oil can be better solved, the influence of the axial and radial vibration of a tail shaft on sealing is reduced, the abrasion of a sealing ring and a shaft sleeve is furthest solved, the power utilization rate of a main shaft can be improved, the power loss of the main shaft is reduced, the sailing speed of the ship is obviously improved, and the ship can be developed towards a low-noise modern naval ship with vibration and noise reduction.

However, when the device is used, water cannot be discharged in time when water enters the device, and the water needs to be discharged by manually starting the drainage device, so that the use is inconvenient.

Therefore, a ship tail shaft sectional type multistage sealing device is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multistage sealing device of boats and ships tailing axle sectional type to the problem of using is discharged in time to the unable discharge when inside intaking that proposes when using in solving above-mentioned background art, needs the people to start drainage device and discharges.

In order to achieve the above object, the utility model provides a following technical scheme: the multistage sealing device comprises a shaft sleeve, wherein a tail shaft is arranged in the shaft sleeve, and a sealing device is arranged in the shaft sleeve.

Sealing device includes first sealing washer, bolt, eccentric wheel, second sealing washer, third sealing washer, fourth sealing washer, first outlet pipe, second outlet pipe, advances oil pipe and goes out oil pipe, first sealing washer is installed in the axle sleeve left side, bolt threaded connection is on first sealing washer surface, eccentric wheel fixed mounting is close to one side of first sealing washer in the tailshaft surface, second sealing washer fixed mounting is close to one side of eccentric wheel in the tailshaft surface, third sealing washer fixed mounting is close to one side of second sealing washer in the tailshaft surface, fourth sealing washer fixed mounting is close to one side of third sealing washer in the tailshaft surface, first outlet pipe sets up in the eccentric wheel top, the second outlet pipe sets up in the eccentric wheel bottom, it sets up in fourth sealing washer left side top to advance oil pipe, it sets up in fourth sealing washer left side bottom to go out oil pipe.

Preferably, an alarm device is arranged inside the shaft sleeve, the alarm device includes a wire sleeve, a first wire, a second wire, a first metal block, a second metal block, a spring, a battery case and an alarm, the wire sleeve is arranged at the top inside the shaft sleeve and close to the right side of the second seal ring, the first wire is arranged inside the wire sleeve, the second wire is arranged inside the wire sleeve, the first metal block is connected to the bottom of the first wire, the second metal block is connected to the bottom of the second wire, the spring is fixedly mounted at the bottom of the first metal block, the battery case is fixedly mounted at the left side of the top of the shaft sleeve, and the alarm is fixedly mounted at the top of the battery case.

Preferably, the first lead is connected with the anode of the battery, the second lead is connected with the cathode of the battery, the first lead and the second lead are in contact to enable the power supply to be connected, and the alarm gives an alarm.

Preferably, the shaft sleeve is internally provided with a cavity, so that the first water outlet pipe, the second water outlet pipe, the oil inlet pipe and the oil outlet pipe can be conveniently installed.

Preferably, a groove is formed in the shaft sleeve, the first water outlet pipe is connected with the groove, the internal pressure intensity is changed through rotation of the eccentric wheel, and internal water is discharged through the first water outlet pipe.

Preferably, the first metal block and the second metal block are made of aluminum, so that the conductive performance is good, and the cost is low.

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

1. this multistage sealing device of boats and ships tailing axle sectional type seals the tailing axle through setting up sealing device to get into the water and get rid of automatically, solved that the proposition in the background art can't in time discharge when inside is intake when using, need artificially start drainage device and discharge inconvenient problem.

2. This multistage sealing device of boats and ships tail-shaft sectional type monitors the condition of intaking through setting up alarm device, has avoided the staff to discover not in time to cause the incident.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the shaft sleeve of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2;

fig. 4 is a schematic structural diagram of the alarm device of the present invention.

In the figure: 1. a shaft sleeve; 2. a tail shaft; 3. a sealing device; 301. a first seal ring; 302. a bolt; 303. an eccentric wheel; 304. a second seal ring; 305. a third seal ring; 306. a fourth seal ring; 307. a first water outlet pipe; 308. a second water outlet pipe; 309. an oil inlet pipe; 310. an oil outlet pipe; 4. an alarm device; 401. a wire guide sleeve; 402. a first conductive line; 403. a second conductive line; 404. a first metal block; 405. a second metal block; 406. a spring; 407. a battery case; 408. an alarm.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. 1-4, the present invention provides a technical solution: the utility model provides a multistage sealing device of boats and ships tail-shaft sectional type, includes axle sleeve 1, the cavity has been seted up inside axle sleeve 1, be convenient for first outlet pipe 307 and second outlet pipe 308, advance the installation of oil pipe 309 and play oil pipe 310, axle sleeve 1 is inside to be seted up slottedly, and first outlet pipe 307 is connected with the groove, rotate through eccentric wheel 303 and make inside pressure change, make inside water get rid of by first outlet pipe 307, axle sleeve 1 is inside to be provided with tail shaft 2, axle sleeve 1 is inside to be provided with sealing device 3.

The sealing device 3 comprises a first sealing ring 301, a bolt 302, an eccentric wheel 303, a second sealing ring 304, a third sealing ring 305, a fourth sealing ring 306, a first water outlet pipe 307, a second water outlet pipe 308, an oil inlet pipe 309 and an oil outlet pipe 310, wherein the first sealing ring 301 is installed on the left side of the shaft sleeve 1, the bolt 302 is in threaded connection with the surface of the first sealing ring 301, the eccentric wheel 303 is fixedly installed on one side, close to the first sealing ring 301, of the surface of the tail shaft 2, the second sealing ring 304 is fixedly installed on one side, close to the eccentric wheel 303, of the surface of the tail shaft 2, the third sealing ring 305 is fixedly installed on one side, close to the second sealing ring 304, the fourth sealing ring 306 is fixedly installed on one side, close to the third sealing ring 305, the first water outlet pipe 307 is arranged at the top of the eccentric wheel 303, the second water outlet pipe 308 is arranged at the bottom of the eccentric wheel 303, the oil inlet pipe 309 is arranged at the top of the left side of the fourth sealing ring 306, and the oil outlet pipe 310 is arranged at the bottom of the left side of the fourth sealing ring 306.

The alarm device 4 is arranged inside the shaft sleeve 1, the alarm device 4 comprises a wire sleeve 401, a first wire 402, a second wire 403, a first metal block 404, a second metal block 405, a spring 406, a battery case 407 and an alarm 408, the wire sleeve 401 is arranged at the top inside the shaft sleeve 1 and close to the right side of the second sealing ring 304, the first wire 402 is arranged inside the wire sleeve 401, the second wire 403 is arranged inside the wire sleeve 401, the first wire 402 is connected with the positive electrode of the battery, the second wire 403 is connected with the negative electrode of the battery, the first wire 402 is connected with the power supply when in contact with the second wire 403, the alarm 408 gives an alarm, the first metal block 404 is connected to the bottom of the first wire 402, the second metal block 405 is connected to the bottom of the second wire 403, the first metal block 404 and the second metal block 405 are made of aluminum, the electric conductivity is good, the cost is low, the spring 406 is fixedly arranged at the bottom of the first metal block 404, the battery case 407 is fixedly arranged at the left side of the top of the shaft sleeve 1, and the alarm 408 is fixedly arranged at the top of the top 407.

When the seawater-proof sleeve is used, seawater is blocked by the first sealing ring 301, when seawater enters the shaft sleeve 1, the eccentric wheel 303 rotates, when the protruding part of the eccentric wheel 303 is close to the first water outlet pipe 307, the upper volume is reduced, the pressure intensity is increased, the seawater is pushed to be discharged from the first water outlet pipe 307 by air pressure, when the protruding part of the eccentric wheel 303 is close to the second water outlet pipe 308, the lower volume is reduced, the pressure intensity is increased, the seawater is pushed to be discharged from the second water outlet pipe 308 by air pressure, when internal water seepage seriously exceeds the second sealing ring 304, the seawater pushes the second metal block 405 to move upwards, the first metal block 404 is in contact with the second metal block 405, the power supply is switched on, the alarm 408 gives an alarm, workers are warned, lubricating oil is injected through the oil inlet pipe 309 to lubricate the tail shaft 2, and redundant oil is discharged from the oil outlet pipe 310.

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. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides a multistage sealing device of boats and ships tailing axle sectional type, includes axle sleeve (1), its characterized in that: a tail shaft (2) is arranged in the shaft sleeve (1), and a sealing device (3) is arranged in the shaft sleeve (1);

sealing device (3) include first sealing washer (301), bolt (302), eccentric wheel (303), second sealing washer (304), third sealing washer (305), fourth sealing washer (306), first outlet pipe (307), second outlet pipe (308), advance oil pipe (309) and go out oil pipe (310), first sealing washer (301) are installed in axle sleeve (1) left side, bolt (302) threaded connection is in first sealing washer (301) surface, eccentric wheel (303) fixed mounting is in one side that first sealing washer (301) are close to in tail shaft (2) surface, second sealing washer (304) fixed mounting is in one side that tail shaft (2) surface is close to eccentric wheel (303), third sealing washer (305) fixed mounting is in one side that tail shaft (2) surface is close to second sealing washer (304), fourth sealing washer (306) fixed mounting is in one side that tail shaft (2) surface is close to third sealing washer (305), first outlet pipe (307) set up in eccentric wheel (303) top, second outlet pipe (308) sets up in eccentric wheel (306) bottom, set up in fourth sealing washer (306) top (309) left side, go out oil pipe (310) bottom.

2. The sectional multistage marine tail shaft sealing device according to claim 1, wherein: the alarm device (4) is arranged in the shaft sleeve (1), the alarm device (4) comprises a wire sleeve (401), a first wire (402), a second wire (403), a first metal block (404), a second metal block (405), a spring (406), a battery case (407) and an alarm (408), the wire sleeve (401) is arranged at the top inside the shaft sleeve (1) and close to the right side of the second sealing ring (304), the first wire (402) is arranged inside the wire sleeve (401), the second wire (403) is arranged inside the wire sleeve (401), the first metal block (404) is connected to the bottom of the first wire (402), the second metal block (405) is connected to the bottom of the second wire (403), the spring (406) is fixedly arranged at the bottom of the first metal block (404), the battery case (407) is fixedly arranged at the left side of the top of the shaft sleeve (1), and the battery case (408) is fixedly arranged at the top of the alarm (407).

3. The sectional multistage sealing device for a stern shaft of a ship according to claim 2, wherein: the first conducting wire (402) is connected with the positive pole of the battery, and the second conducting wire (403) is connected with the negative pole of the battery.

4. The sectional multistage marine tail shaft sealing device according to claim 1, wherein: a cavity is formed in the shaft sleeve (1).

5. The sectional multistage marine tail shaft sealing device according to claim 1, wherein: a groove is formed in the shaft sleeve (1), and the first water outlet pipe (307) is connected with the groove.

6. The sectional multistage sealing device for a stern shaft of a ship according to claim 2, wherein: the material of the first metal block (404) and the second metal block (405) is aluminum.