CN217130569U

CN217130569U - Salt corrosion and seepage resistant ship ventilation pipeline

Info

Publication number: CN217130569U
Application number: CN202122092262.3U
Authority: CN
Inventors: 闵云峰
Original assignee: Wuxi Duokemeng Hvac Equipment Co ltd
Current assignee: Wuxi Duokemeng Hvac Equipment Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-08-05
Anticipated expiration: 2031-08-31

Abstract

The application provides a boats and ships air pipe of anti salt corrosion seepage belongs to air pipe technical field. The marine ventilation pipeline capable of resisting salt, corrosion and leakage comprises a pipeline body and an automatic cleaning mechanism, wherein the pipeline body comprises a protective shell, an impervious layer and an inner anticorrosive layer which are sequentially arranged from outside to inside, the automatic cleaning mechanism comprises a reciprocating screw rod, a driving fan blade, an ash scraping piece, a cleaning brush, a filtering connecting sleeve and a guide sliding rod, the pipeline body is subjected to antiseptic treatment through the inner antiseptic layer, the corrosion of seawater and sea wind to the inner wall of the pipeline cavity is effectively slowed down, the leakage is avoided, the service life of the ventilating pipeline is effectively prolonged, the dust scraping piece is driven to slide in a reciprocating way through the matching of the reciprocating screw rod, the driving fan blades and the guide slide rod, so that the dust on the inner peripheral wall of the tube cavity is scraped, and the cleaning brush is driven to rotate at the same time, the dust on the surface of the filter screen is cleaned, the self-cleaning function is realized, manual disassembly and taking down are not needed, and time and labor are saved.

Description

Salt corrosion and seepage resistant ship ventilation pipeline

Technical Field

The application relates to the field of ventilation pipelines, in particular to a ship ventilation pipeline capable of resisting salt corrosion and leakage.

Background

The ship sails in each sea area, and meteorological condition is complicated, and the weather is changeable, for increasing the inside ventilation effect of boats and ships, can set up the air pipe with external intercommunication usually in boats and ships, creates a suitable artificial climate in the cabin, improves the environment.

When using, the existing ship ventilation pipeline is easy to corrode due to salinization and cause leakage in the corrosion environment of seawater and sea wind for a long time, the service life of the ventilation pipeline is greatly shortened, and the ventilation pipeline is used for a long time, a large amount of dust can be accumulated in the pipeline body, the ventilation pipeline does not have a self-cleaning function, and the ventilation pipeline needs to be periodically disassembled manually and taken down for cleaning, so that the operation is complicated and inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to make up for the above deficiencies, the present application provides a marine ventilation duct that is resistant to salt corrosion and leakage, and aims to improve the problems set forth in the background art.

The embodiment of the application provides a boats and ships air pipe of anti salt corrosion seepage, including pipeline body and automatic mechanism of cleaning.

The pipeline body comprises a protective shell, an anti-permeability layer and an inner anti-corrosion layer which are sequentially arranged from outside to inside, and a pipe cavity is surrounded by the inner anti-corrosion layer.

Automatic clean mechanism including reciprocal lead screw, drive flabellum, scrape grey spare, brush cleaner, filter adapter sleeve and direction slide bar, reciprocal lead screw both ends rotate through support ring frame and mount respectively set up in the axle center department of lumen, the direction slide bar is fixed set up in support ring frame with between the mount, drive flabellum install in reciprocal lead screw is close to the one end of support ring frame, scrape grey spare screw thread cup joint in reciprocal lead screw, just scrape grey spare sliding sleeve and locate the direction slide bar, the brush cleaner is fixed set up in reciprocal lead screw is close to the one end of mount, filter adapter sleeve screw thread cup joint in the pipeline body is close to the one end of brush cleaner, filter adapter sleeve center department inlays and is equipped with the filter screen, the brush cleaner butt in filter screen surface.

In the above-mentioned realization in-process, carry out anticorrosive treatment to pipeline body through interior anticorrosive coating, the effectual corruption to the lumen inner wall that slows down sea water and sea wind, avoid causing its seepage, air pipe's life has effectively been improved, through reciprocal lead screw, the cooperation of drive flabellum and direction slide bar, the reciprocal slip of ash spare is scraped in the drive, thereby scrape the dust on the lumen internal perisporium, it is rotatory to drive the brush cleaner simultaneously, the dust to the filter screen surface is cleared up, self-cleaning function has been realized, need not the manual work and disassemble and take off and wash, time saving and labor saving.

In a specific embodiment, an ash discharge pipe is arranged at the bottom of one end, close to the filtering connecting sleeve, of the pipeline body, and the ash discharge pipe and the pipeline body are integrally formed.

In a specific embodiment, the top end of the ash discharge pipe is communicated with the pipe cavity, a sealing cover is inserted at the bottom end of the ash discharge pipe, and a pull ring is fixed outside the sealing cover.

In the implementation process, the bottom end of the ash discharging pipe is sealed through the sealing cover, so that the ash discharging pipe can collect dust cleaned, and the sealing cover is convenient to extract from the ash discharging pipe through the pull ring to clean the dust.

In a specific embodiment, the ash scraping part comprises a threaded sleeve, a second support rod and an annular scraper, the second support rod array is fixedly arranged on the outer peripheral side of the threaded sleeve, the annular scraper is fixedly arranged outside the second support rod, and the annular scraper abuts against the inner peripheral wall of the tube cavity.

In the implementation process, the reciprocating screw rod drives the annular scraper to rotate through the threaded sleeve and the second support rod so as to scrape off dust attached to the inner peripheral wall of the tube cavity.

In a specific embodiment, the cross section of the annular scraper is arched, and a brush sleeve is fixed in the arched groove of the annular scraper.

At above-mentioned realization in-process, the brush cover removes along with annular scraper blade, can clean the dust with on the lumen internal perisporium, makes the dust clearance more thorough.

In a specific implementation scheme, the cross section of the guide slide bar is in a cross shape, one of the cross sections is fixed with a sliding sleeve on the second supporting rod, and the sliding sleeve is provided with a cross-shaped sliding groove matched with the guide slide bar.

In the implementation process, the sliding sleeve is in sliding fit with the guide sliding rod, so that the ash scraping part is guided and limited along with the reciprocating sliding of the reciprocating screw rod, and is prevented from rotating along with the reciprocating screw rod.

In a specific embodiment, the supporting ring frame comprises a fixed ring plate, a first supporting rod and a first shaft sleeve, the fixed ring plate is fixedly embedded in the inner peripheral wall of the tube cavity, the first shaft sleeve is sleeved on the outer side of one end of the reciprocating screw rod, and the first supporting rod array is fixedly arranged between the fixed ring plate and the first shaft sleeve.

In the implementation process, the first shaft sleeve is fixedly supported in the pipe cavity through the fixed ring plate and the first supporting rod, so that one end of the reciprocating screw rod can be supported by the first shaft sleeve, and the reciprocating screw rod can rotate more stably.

In a specific embodiment, the mount includes arc fixed block, third bracing piece and second axle sleeve, the second axle sleeve cup joint in the outside of reciprocal lead screw other end, the third bracing piece interval fixed set up in second axle sleeve periphery side, arc fixed block fixed connection in the one end that the third bracing piece was kept away from, just the arc fixed block is fixed to be inlayed and is located pipe chamber internal perisporium.

In the implementation process, the second shaft sleeve is fixedly supported in the pipe cavity through the arc-shaped fixing block and the third supporting rod, so that the second shaft sleeve can support the other end of the reciprocating screw rod, and the reciprocating screw rod can rotate more stably.

In a specific embodiment, a first fixing sleeve is fixed on the first support rod at the top of the first shaft sleeve, a second fixing sleeve is fixed on the third support rod at the top of the second shaft sleeve, and two ends of the guide slide bar are respectively and fixedly connected to the first fixing sleeve and the second fixing sleeve.

In a specific embodiment, the inner peripheral wall of the tube cavity is provided with a mounting groove, and the fixed ring plate and the arc-shaped fixed blocks are fixedly clamped in the mounting groove.

In the implementation process, the fixing ring plate and the arc-shaped fixing block are hidden in the mounting groove, and dust accumulation caused by the fact that the fixing ring plate and the arc-shaped fixing block protrude into the pipe cavity is avoided.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a marine ventilation duct resistant to salt corrosion and leakage according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a pipe body according to an embodiment of the present disclosure from a first viewing angle;

fig. 3 is a schematic structural diagram of a pipe body provided in the embodiment of the present application at a second viewing angle;

FIG. 4 is a schematic structural diagram of an automatic cleaning mechanism according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a first view angle of an ash scraping member according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a second viewing angle of the ash scraping member according to the embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a support ring frame according to an embodiment of the present disclosure;

fig. 8 is a schematic structural view of a fixing frame according to an embodiment of the present application.

In the figure: 10-a pipe body; 110-a protective shell; 120-a permeation resistant layer; 130-inner anticorrosive layer; 140-a lumen; 141-a mounting groove; 150-ash discharge pipe; 160-a sealing cover; 161-pull ring; 20-an automatic cleaning mechanism; 210-reciprocating screw rod; 220-support ring frame; 221-fixing a ring plate; 222-a first support bar; 223-a first sleeve; 224-a first locking bushing; 230-drive fan blades; 240-ash scraping part; 241-thread sleeve; 242-a second support bar; 243-annular scraper; 244-brush casing; 245-a sliding sleeve; 250-a fixing frame; 251-arc fixing block; 252-a third support bar; 253-a second bushing; 254-a second locking bushing; 260-cleaning and brushing; 270-filtering connecting sleeves; 271-a filter screen; 280-guiding the sliding rod.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-8, the present application provides a marine ventilation duct with salt corrosion and leakage resistance, which includes a duct body 10 and an automatic cleaning mechanism 20.

Referring to fig. 2 and 3, the pipeline body 10 includes a protective shell 110, an anti-seepage layer 120 and an inner anti-corrosion layer 130, which are sequentially arranged from outside to inside, the inner anti-corrosion layer 130 is wrapped to form a pipe cavity 140, optionally, the protective shell 110 may be made of stainless steel, the inner anti-corrosion layer 130 may be made of a ceramic filling layer, epoxy resin, PVC material and the like, and the inner anti-corrosion layer 130 is connected with the anti-seepage layer 120 through a spraying manner, so that the pipeline body 10 is subjected to anti-corrosion treatment, corrosion of seawater and sea wind to the inner wall of the pipe cavity 140 is effectively slowed down, leakage of the pipe cavity is avoided, and the service life of the ventilation pipeline is effectively prolonged.

When specifically setting up, the one end bottom that pipeline body 10 is close to filtering adapter sleeve 270 is provided with dust exhaust pipe 150, dust exhaust pipe 150 sets up with pipeline body 10 integrated into one piece, dust exhaust pipe 150 top is linked together with lumen 140, dust exhaust pipe 150 bottom is inserted and is equipped with sealed lid 160, seal dust exhaust pipe 150 bottom through sealed lid 160 and live, make dust exhaust pipe 150 can collect the dust that cleans down, sealed lid 160 external fixation has pull ring 161, be convenient for extract sealed lid 160 from dust exhaust pipe 150 through pull ring 161 and carry out the dust clearance.

Referring to fig. 4, 5 and 6, the automatic cleaning mechanism 20 includes a reciprocating screw rod 210, a driving fan blade 230, an ash scraping member 240, a cleaning brush 260, a filtering connection sleeve 270 and a guiding slide rod 280, two ends of the reciprocating screw rod 210 are respectively rotatably disposed at the axis of the pipe cavity 140 through a support ring frame 220 and a fixing frame 250, the guiding slide rod 280 is fixedly disposed between the support ring frame 220 and the fixing frame 250, the driving fan blade 230 is mounted at one end of the reciprocating screw rod 210 close to the support ring frame 220, the driving fan blade 230 is bolted or welded at one end of the reciprocating screw rod 210, the ash scraping member 240 is screwed on the reciprocating screw rod 210, the ash scraping member 240 is slidably sleeved on the guiding slide rod 280, the cleaning brush 260 is fixedly disposed at one end of the reciprocating screw rod 210 close to the fixing frame 250, the cleaning brush 260 is bolted or welded at the other end of the reciprocating screw rod 210, the filtering connection sleeve 270 is screwed on one end of the pipe body 10 close to the cleaning brush 260, a filter screen 271 is embedded in the center of the filter connecting sleeve 270, the filter screen 271 can intercept the dust cleaned by the dust scraping member 240, so as to avoid the dust diffusion, and simultaneously, the dust is filtered by the external wind, so as to maintain a good working environment, the cleaning brush 260 of the filter screen 271 abuts against the surface of the filter screen 271, the external wind enters from the left side of the pipe cavity 140, and the fan blade 230 is blown to rotate, so that the reciprocating screw rod 210 rotates along with the dust scraping member 240, so as to drive the dust scraping member 240 to slide on the guide slide rod 280 in a reciprocating manner, the dust scraping member 240 can move along the inner wall of the pipe cavity 140, so as to scrape the dust on the inner wall of the pipe cavity 140, when the dust scraping member 240 moves above the dust discharging pipe 150, the dust can be transferred into the dust discharging pipe 150, meanwhile, the reciprocating screw rod 210 can drive the cleaning brush 260 to rotate, so as to clean the dust on the surface of the filter screen 271, and the cleaned dust also falls into the dust discharging pipe 150, so as to realize a self-cleaning function, need not artifical the disassembling and taking off and wash labour saving and time saving.

In the application, the dust scraping component 240 includes a threaded sleeve 241, a second support rod 242 and an annular scraper 243, the second support rod 242 is fixedly arranged on the outer peripheral side of the threaded sleeve 241, the annular scraper 243 is fixedly arranged outside the second support rod 242, the second support rod 242 is all bolted or welded between the threaded sleeve 241 and the annular scraper 243, the annular scraper 243 is abutted against the inner peripheral wall of the tube cavity 140, so as to scrape off dust attached to the inner peripheral wall of the tube cavity 140, it should be noted that the cross section of the annular scraper 243 is arched, a brush sleeve 244 is fixed in the arched groove of the annular scraper 243, the annular scraper 243 is detachably sleeved with the brush sleeve 244, the brush sleeve 244 moves along with the annular scraper 243, and can clean dust on the inner peripheral wall of the tube cavity 140, so that dust can be cleaned more thoroughly.

When the device is specifically arranged, the cross section of the guide sliding rod 280 is cross-shaped, a sliding sleeve 245 is fixed on one second supporting rod 242, the sliding sleeve 245 is provided with a cross-shaped sliding groove matched with the guide sliding rod 280, and the sliding sleeve 245 is in sliding fit with the guide sliding rod 280 to guide and limit the ash scraping piece 240 to slide back and forth along with the reciprocating screw rod 210 and prevent the ash scraping piece 240 from rotating along with the reciprocating screw rod 210.

Referring to fig. 7 and 8, the support ring frame 220 includes a fixed ring plate 221, a first support rod 222 and a first shaft sleeve 223, the fixed ring plate 221 is fixedly embedded in the inner peripheral wall of the tube cavity 140, the first shaft sleeve 223 is sleeved outside one end of the reciprocating screw rod 210, one end of the reciprocating screw rod 210 rotatably penetrates through the first shaft sleeve 223 through a bearing, the first support rod 222 is fixedly arranged between the fixed ring plate 221 and the first shaft sleeve 223 in an array manner, the first support rod 222 is bolted or welded between the fixed ring plate 221 and the first shaft sleeve 223, and the first shaft sleeve 223 is fixedly supported in the tube cavity 140 through the fixed ring plate 221 and the first support rod 222, so that the first shaft sleeve 223 can support one end of the reciprocating screw rod 210, and the rotation of the reciprocating screw rod 210 is more stable.

In this embodiment, the fixing frame 250 includes an arc-shaped fixing block 251, a third supporting rod 252 and a second bushing 253, the second bushing 253 is sleeved on the outer side of the other end of the reciprocating screw 210, the other end of the reciprocating screw 210 passes through the second bushing 253 through a bearing in a rotating manner, the third supporting rod 252 is fixedly arranged on the outer peripheral side of the second bushing 253 at intervals, the arc-shaped fixing block 251 is fixedly connected to one end of the third supporting rod 252 away from the third supporting rod, the third supporting rod 252 is connected or welded between the second bushing 253 and the arc-shaped fixing block 251 through a bolt, the arc-shaped fixing block 251 is fixedly embedded in the inner peripheral wall of the tube cavity 140, the second bushing 253 is fixedly supported in the tube cavity 140 through the arc-shaped fixing block 251 and the third supporting rod 252, so that the second bushing 253 can support the other end of the reciprocating screw 210, and the rotation of the reciprocating screw 210 is more stable.

In some specific embodiments, the inner peripheral wall of the tube cavity 140 is provided with a mounting groove 141, the mounting groove 141 is annular, the fixed ring plate 221 and the arc-shaped fixed block 251 are both fixedly clamped in the mounting groove 141, the fixed ring plate 221 and the arc-shaped fixed block 251 are fixedly connected in the mounting groove 141 through bolts or screws, so that the fixed ring plate 221 and the arc-shaped fixed block 251 are hidden in the mounting groove 141 to prevent dust from accumulating due to protruding into the tube cavity 140, the first support rod 222 at the top of the first sleeve 223 is fixed with a first fixed sleeve 224, the third support rod 252 at the top of the second sleeve 253 is fixed with a second fixed sleeve 254, two ends of the guide slide 280 are respectively and fixedly connected to the first fixed sleeve 224 and the second fixed sleeve 254, and two ends of the guide slide 280 are welded to the first fixed sleeve 224 and the second fixed sleeve 254.

The working principle of the salt corrosion and seepage resistant ship ventilation pipeline is as follows: when the pipeline body 10 is subjected to anti-corrosion treatment through the inner anti-corrosion layer 130 during use, the corrosion of seawater and sea wind to the inner wall of the cavity 140 is effectively slowed down, the leakage of the seawater and sea wind is avoided, the service life of the ventilation pipeline is effectively prolonged, when external wind enters the pipeline body 10 from the left side of the cavity 140, the fan blades 230 are blown to rotate, the reciprocating screw rod 210 rotates along with the reciprocating screw rod to drive the dust scraping piece 240 to slide on the guide slide rod 280 in a reciprocating manner, the dust scraping piece 240 can slide on the inner wall of the cavity 140 during movement, so that dust on the inner wall of the cavity 140 is scraped, when the dust scraping piece 240 moves to the upper side of the dust exhaust pipe 150, the dust can be transferred into the dust exhaust pipe 150, meanwhile, the reciprocating screw rod 210 can drive the cleaning brush 260 to rotate, the dust on the surface of the filter screen 271 is cleaned, the cleaned dust also falls into the dust exhaust pipe 150, and the sealing cover 160 is periodically pulled out to clean the dust, the self-cleaning function is realized, manual disassembly and taking down are not needed for cleaning, and time and labor are saved.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A salt corrosion and leakage resistant ship ventilation duct is characterized by comprising

The pipeline comprises a pipeline body (10), wherein the pipeline body (10) comprises a protective shell (110), an anti-seepage layer (120) and an inner anticorrosive layer (130) which are sequentially arranged from outside to inside, and a pipe cavity (140) is formed by wrapping the inner anticorrosive layer (130);

automatic cleaning mechanism (20), automatic cleaning mechanism (20) includes reciprocal lead screw (210), drive flabellum (230), scrapes grey spare (240), cleaning brush (260), filters adapter sleeve (270) and direction slide bar (280), reciprocal lead screw (210) both ends respectively through support ring frame (220) and mount (250) rotate set up in the axle center department of lumen (140), direction slide bar (280) fixed set up in support ring frame (220) with between mount (250), drive flabellum (230) install in reciprocal lead screw (210) is close to the one end of support ring frame (220), scrape grey spare (240) screw thread cup joint in reciprocal lead screw (210), just scrape grey spare (240) sliding sleeve locate guide slide bar (280), cleaning brush (260) fixed set up in reciprocal lead screw (210) is close to the one end of mount (250), the filtering connecting sleeve (270) is in threaded sleeve joint with the end, close to the cleaning brush (260), of the pipeline body (10), a filter screen (271) is embedded in the center of the filtering connecting sleeve (270), and the cleaning brush (260) is abutted to the surface of the filter screen (271).

2. The marine ventilation duct capable of resisting salt corrosion and leakage according to claim 1, wherein an ash discharge pipe (150) is arranged at the bottom of one end, close to the filtering connection sleeve (270), of the duct body (10), and the ash discharge pipe (150) and the duct body (10) are integrally formed.

3. The marine ventilation duct capable of resisting salt corrosion and leakage according to claim 2, wherein the top end of the ash discharge pipe (150) is communicated with the pipe cavity (140), a sealing cover (160) is inserted at the bottom end of the ash discharge pipe (150), and a pull ring (161) is fixed outside the sealing cover (160).

4. The marine ventilation duct capable of resisting salt corrosion leakage according to claim 1, wherein the ash scraping member (240) comprises a threaded sleeve (241), a second support rod (242) and an annular scraper (243), the second support rod (242) is fixedly arranged on the outer circumferential side of the threaded sleeve (241), the annular scraper (243) is fixedly arranged outside the second support rod (242), and the annular scraper (243) abuts against the inner circumferential wall of the pipe cavity (140).

5. The marine ventilation duct with salt corrosion and leakage resistance according to claim 4, characterized in that the cross section of the annular scraper (243) is arched, and a brush sleeve (244) is fixed in the arched groove of the annular scraper (243).

6. The marine ventilation duct of salt corrosion and leakage resistance of claim 4, wherein the cross section of the guide sliding rod (280) is cross-shaped, one of the cross-shaped guide sliding rods is fixed with a sliding sleeve (245) on the second supporting rod (242), and the sliding sleeve (245) is provided with a cross-shaped sliding groove matched with the guide sliding rod (280).

7. The marine ventilation duct of the claim 1, characterized in that the supporting ring frame (220) comprises a fixed ring plate (221), a first supporting rod (222) and a first shaft sleeve (223), the fixed ring plate (221) is fixedly embedded in the inner peripheral wall of the pipe cavity (140), the first shaft sleeve (223) is sleeved on the outer side of one end of the reciprocating screw rod (210), and the first supporting rod (222) is fixedly arranged between the fixed ring plate (221) and the first shaft sleeve (223) in an array manner.

8. The marine ventilation duct capable of resisting salt corrosion and leakage according to claim 7, wherein the fixing frame (250) comprises an arc-shaped fixing block (251), a third supporting rod (252) and a second shaft sleeve (253), the second shaft sleeve (253) is sleeved on the outer side of the other end of the reciprocating screw rod (210), the third supporting rod (252) is fixedly arranged on the outer peripheral side of the second shaft sleeve (253) at intervals, the arc-shaped fixing block (251) is fixedly connected to one end, far away from the third supporting rod (252), of the third supporting rod (252), and the arc-shaped fixing block (251) is fixedly embedded in the inner peripheral wall of the pipe cavity (140).

9. The marine ventilation duct of claim 8, wherein a first fixing sleeve (224) is fixed to the first support rod (222) at the top of the first sleeve (223), a second fixing sleeve (254) is fixed to the third support rod (252) at the top of the second sleeve (253), and two ends of the guide slide bar (280) are respectively and fixedly connected to the first fixing sleeve (224) and the second fixing sleeve (254).

10. The marine ventilation duct capable of resisting salt corrosion and leakage according to claim 8, wherein an installation groove (141) is formed in the inner peripheral wall of the tube cavity (140), and the fixing ring plate (221) and the arc-shaped fixing block (251) are fixedly clamped in the installation groove (141).