CN114192275A

CN114192275A - Environment-friendly recovery device for derusting waste sand of ship cargo hold without landing

Info

Publication number: CN114192275A
Application number: CN202111232199.7A
Authority: CN
Inventors: 严正平; 胡晨; 张雄刚; 潘建伟; 赵巍
Original assignee: Chengxi Shipyard Co Ltd
Current assignee: Chengxi Shipyard Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-03-18
Anticipated expiration: 2041-10-22
Also published as: CN114192275B

Abstract

The invention discloses a ship cargo compartment derusting waste sand non-landing environment-friendly recovery device, wherein a recovery bin is connected to the inner side of a fixed frame, a guide sleeve is connected to the inner part of the guide sleeve, a first driving machine is connected to the bottom of a through cavity, an output shaft of the first driving machine is connected with a driving box, a second driving machine, a cam, a convex plate and a movable plate are arranged in the driving box, a dust collector is fixedly arranged in the mounting groove, and electromagnetic iron rods and stirring rods are arranged in the recovery bin and the through cavity The environmental protection aims of zero flushing of wharfs and zero discharge of waste water.

Description

Environment-friendly recovery device for derusting waste sand of ship cargo hold without landing

Technical Field

The invention relates to the technical field of waste sand recovery devices, in particular to a ship cargo hold derusting waste sand non-landing environment-friendly recovery device.

Background

The rust removing paint for the cargo hold is one of the key main line projects for repairing ships in factories, and the project creates a large amount of output value for ship repair of companies. The sand blasting rust removal is a main means for removing rust of a ship cargo hold for a long time, and is deeply favored by customers due to the advantages of high construction efficiency, thorough removal of old coatings on steel surfaces, good quality of rust removal surfaces, capability of meeting technical requirements and the like.

In the sand blasting and rust removing engineering for repairing the ship cargo hold, no matter dry sand blasting or novel water mist sand blasting, a large amount of waste sand can be generated in the cargo hold. At present, the waste sand is hoisted to a wharf of a company to be centrally stacked, and then is transported to a hopper of a transport vehicle by a loader, and is transported to a waste sand treatment point to be centrally treated.

In the waste sand transfer process, not only the loader is required to be matched, but also a large amount of personnel are required to carry out the residual collection and cleaning of the waste sand. Because the waste sand granule is less, it is great to collect the degree of difficulty, difficult clean up, after the preliminary clearance of waste sand, still need use company's pier fire water to carry out waste sand and pile up the place temporarily and wash, so, must produce a large amount of profit energy consumptions, cost of labor, time cost, simultaneously, pile up the waste water that the place produced and carry waste sand directly to flow into the Yangtze river through the interim waste sand that washes, led to the fact great pollution to the Yangtze river water source.

In addition, waste iron in the waste sand is difficult to recover in the waste sand recovery process, and the waste sand can generate more dust in the process of pouring the waste sand into the car hopper, so that the dust can cause air pollution or influence workers.

Disclosure of Invention

The invention aims to provide an environment-friendly recovery device for derusting waste sand in a ship cargo hold without falling to the ground, so as to solve the problem that the waste sand is difficult to recover.

In order to achieve the purpose, the invention provides the following technical scheme: the ship cargo hold derusting waste sand non-landing environment-friendly recovery device comprises a fixed frame, wherein the middle part of the inner side of the fixed frame is fixedly connected with a recovery bin, the bottom of the recovery bin is fixedly connected with a base, the top of the inner wall of the recovery bin is fixedly connected with four guide cylinders through a fixing plate, the guide sleeve is fixedly connected inside the guide cylinder, four through cavities are formed inside the base, the bottom of each through cavity is fixedly connected with a first driving machine, the output shaft of the first driving machine is fixedly connected with a driving box, a second driving machine, a cam, a convex plate and a movable plate are arranged in the driving box, the top of the driving box is provided with a rotating shaft, the top end of the rotating shaft penetrates through the interior of the recovery bin and extends to the interior of the guide cylinder, the base is also internally provided with a mounting groove, four dust collectors are fixedly mounted inside the mounting groove, the inside of retrieving the storehouse and the inside that leads to the chamber all are provided with a plurality of electro-magnet stick and puddler.

Preferably, the top of the recovery bin is fixedly connected with an operation bin, a pedestrian passage is arranged outside the operation bin, a ladder way is arranged on one side of the pedestrian passage, four valve ports are formed in the bottom end inside the recovery bin, discharge pipes are fixedly connected to the bottoms of the valve ports, and a pneumatic gate valve is fixedly mounted on one side of the discharge pipes.

Preferably, a material guide plate is arranged between the four valve ports, and side plates are fixedly connected to two sides of the bottom end inside the recovery bin.

Preferably, the cam is fixedly connected to an output shaft of the second driving machine, the protruding plate is fixedly connected to the bottom end of the movable plate and used in cooperation with the cam, slide rails are fixedly mounted on two sides of the inner wall of the driving box, the movable plate is connected with the slide rails in a sliding mode through the slide blocks, and the bottom end of the rotating shaft penetrates through the inside of the driving box in a sliding mode and is fixedly connected with the middle of the top of the movable plate. And a second spring is sleeved at the bottom end of the rotating shaft.

Preferably, a telescopic rod is fixedly connected to the middle of the top of the inner wall of the guide sleeve, a first spring is sleeved on the surface of the telescopic rod, and the top end of the rotating shaft penetrates through the guide sleeve in a sliding mode and is connected with the bottom end of the telescopic rod through a bearing.

Preferably, lead to the chamber bottom and seted up two discharge gates, the suction chamber has all been seted up to the both sides that lead to the chamber, the inside fixedly connected with suction hood in suction chamber, the first material pipe that leads to of input fixed connection of dust catcher, the first one end that leads to the material pipe run through to the inside in suction chamber and with the one end fixed connection of suction hood through the pipeline, the output fixedly connected with second of dust catcher leads to the material pipe, the suction chamber is close to the equal fixedly connected with filter screen in one side that leads to the chamber.

Preferably, the bottom of the mounting groove is provided with a receiving groove, one end of the second material passing pipe penetrates through the receiving groove, and the receiving groove is provided with a corresponding groove door.

Preferably, a protective shell is fixedly connected to the outside of the driving box.

Preferably, the material guide plate is arranged in a V shape, the top of the guide cylinder is arranged in a conical tip shape, and the protective shell is arranged in a U shape.

Preferably, the both sides of stock guide all are 45 degrees with the contained angle between the base, the contained angle between curb plate and the base is 25 degrees, the bottom in dust absorption chamber is the slope setting and is 45 degrees with the contained angle between the base, the opening has still been seted up to the bottom of filter screen.

Compared with the prior art, the invention has the beneficial effects that:

1. the dust catcher passes through first material pipe and the dust hood extraction dust absorption intracavity dust that leads to, and the rethread second leads to the material pipe with the dust discharge to the collecting tank in, then the in-process that the carrier loader car hopper was arranged to the sand waste, can avoid recovering the in-process at the sand waste as far as possible and produce the dust, avoids the dust can waft aloft, causes the pollution or makes the influence to the staff to the atmosphere.

2. The electromagnet rod can also move up and down when rotating, so that the electromagnet rod inside the recovery bin and inside the through cavity can be well used for treating waste iron in the waste sand, the waste iron in the waste sand is basically adsorbed by the electromagnet rod, and the device is high in waste iron recovery effect and efficiency in the waste sand.

3. The site use targets that no waste sand is temporarily stacked at the wharf and the wharf passes smoothly are realized;

4. the environmental protection aims of no landing of derusting waste sand transportation of a ship cargo hold, zero flushing of a wharf and zero discharge of waste water are basically achieved.

Drawings

FIG. 1 is a schematic overall front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

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

FIG. 4 is a schematic cross-sectional view of the recovery tank and base of the present invention;

FIG. 5 is a schematic perspective view of the recovery bin and base of the present invention;

FIG. 6 is a schematic view of the internal structure of the guide cylinder according to the present invention;

FIG. 7 is a schematic view showing the internal structure of the driving box according to the present invention;

FIG. 8 is an enlarged schematic view of the structure of the present invention A;

fig. 9 is a schematic view of the internal structure of the base of the present invention.

In the figure: 10. an operation bin; 11. a pedestrian passageway; 111. a ladder way; 12. a fixed mount; 20. a recovery bin; 201. a valve port; 21. a fixing plate; 22. a guide cylinder; 221. a telescopic rod; 222. a first spring; 223. a guide sleeve; 23. a rotating shaft; 231. a stirring rod; 232. an electromagnet rod; 24. a material guide plate; 25. a side plate; 26. a discharge pipe; 27. a first driver; 28. a drive box; 280. a protective shell; 281. a second spring; 282. a slide rail; 283. a movable plate; 284. a slider; 285. a convex plate; 286. a second driver; 287. a cam; 30. a base; 301. a dust suction chamber; 302. a cavity is communicated; 303. a discharge port; 304. mounting grooves; 305. a material receiving groove; 31. a dust hood; 311. a first material passing pipe; 312. a filter screen; 32. a vacuum cleaner; 321. and a second material passing pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1-9, the present invention provides a technical solution: the ship cargo hold rust removal waste sand non-landing environment-friendly recovery device comprises a fixed frame 12, a recovery bin 20 is fixedly connected to the middle part of the inner side of the fixed frame 12, a base 30 is fixedly connected to the bottom of the recovery bin 20, two sides of the fixed plate 21 are fixedly connected with the inner side of the fixed frame 12, four guide cylinders 22 are fixedly connected to the top of the inner wall of the recovery bin 20 through the fixed plate 21, guide sleeves 223 are fixedly connected to the inner part of the guide cylinders 22, four through cavities 302 are formed in the base 30, a first driving machine 27 is fixedly connected to the bottom of the through cavities 302, a driving box 28 is fixedly connected to an output shaft of the first driving machine 27, a second driving machine 286, a cam 287, a convex plate 285 and a movable plate are arranged in the driving box 28, the convex plate 285 is positioned above the cam 287, a rotating shaft 23 is arranged at the top of the driving box 28, the top end of the rotating shaft 23 penetrates through the inner part of the recovery bin 20 and extends to the inner part of the guide cylinders 22, mounting groove 304 has still been seted up to the inside of base 30, and the inside fixed mounting of mounting groove 304 has four dust collectors 32, and the inside of retrieving storehouse 20 and the inside of leading to chamber 302 all are provided with a plurality of electro-magnet stick 232 and puddler 231, and the equal fixed connection in the surface of pivot 23 of electro-magnet stick 232 and puddler 231.

The cam 287 is fixedly connected to an output shaft of the second driving machine 286, the protruding plate 285 is fixedly connected to the bottom end of the movable plate 283 and is used in cooperation with the cam 287, the slide rails 282 are fixedly mounted on both sides of the inner wall of the driving box 28, the movable plate 283 is slidably connected to the slide rails 282 through the sliders 284, the movable plate 283 can stably move, the bottom end of the rotating shaft 23 slidably penetrates through the inside of the driving box 28 and is fixedly connected to the middle of the top of the movable plate 283, and the bottom end of the rotating shaft 23 is further sleeved with the second spring 281.

Wherein, fixedly connected with telescopic link 221 in the middle of the top of guide pin bushing 223 inner wall, the surface cover of telescopic link 221 is equipped with first spring 222, and the top of pivot 23 slides and passes guide pin bushing 223 and be connected with the bottom of telescopic link 221 through the bearing, can play the effect of buffering to pivot 23 through telescopic link 221 and first spring 222 for pivot 23 more stable removal.

Wherein, lead to the chamber 302 bottom and seted up two discharge gates 303, the suction chamber 301 has all been seted up to the both sides that lead to chamber 302, the inside fixedly connected with suction hood 31 of suction chamber 301, the first material pipe 311 that leads to of input fixed connection of dust catcher 32, the first one end that leads to material pipe 311 runs through to the inside of suction chamber 301 and with the one end fixed connection of suction hood 31 through the pipeline, the second of output end fixedly connected with of dust catcher 32 leads to the pipe 321, suction chamber 301 is close to the equal fixedly connected with filter screen 312 in one side that leads to chamber 302, can prevent the waste material as far as possible through filter screen 312 and enter into suction chamber 301, then do not influence the normal work of suction hood 31.

Wherein, the bottom of mounting groove 304 is provided with receiving groove 305, and the one end of second through-tube 321 runs through to receiving groove 305's inside, and receiving groove 305 is provided with corresponding sluice gate, and dust collector 32 leads to the dust in chamber 302 through the first extraction of passing through material pipe 311, and the rethread second through-tube 321 is discharged the dust of extraction into receiving groove 305 in, opens the sluice gate and can be convenient for to the accumulational dust clearance in receiving groove 305.

Wherein, the outside fixedly connected with protective housing 280 of drive box 28, and protective housing 280 covers the motor, can play the effect of protection to motor and drive box 28 through protective housing 280.

The top of the guide cylinder 22 is in a conical shape, and the protective shell 280 is in a U-shaped shape, so that waste materials in the through cavity 302 can better flow out of the discharge hole 303.

Wherein, the bottom of suction chamber 301 is the slope setting and is 45 degrees with the contained angle between the base 30, and the opening has still been seted up to the bottom of filter screen 312 to can make the waste material that lets in the suction chamber 301 flow out to the logical chamber 302 in from the opening.

The working principle is as follows: the device is placed beside a ship with rust removal, a carrier vehicle runs to the lower part of the device, a hopper of the carrier vehicle is positioned below a base, in the sand blasting and rust removal process of the ship, a first driving machine 27, a second driving machine 286, a dust collector 32 and an electromagnet rod 232 are enabled to work, a large amount of waste sand can be generated in the sand blasting and rust removal process, the waste sand firstly falls into an operation cabin 10, an output shaft of the first driving machine 27 enables a driving box 28 to rotate, the driving box 28 rotates a rotating shaft 23, the rotating shaft 23 drives the electromagnet rod 232 and a stirring rod 231 on the surface of the rotating shaft to rotate, the waste sand is stirred through the stirring rod 231, the waste sand is dispersed, the electromagnet rod 232 can well adsorb waste iron in the waste sand, then the waste sand enters a dust absorption cavity 301, and the waste iron contained in the waste sand in the dust absorption cavity 301 is adsorbed again through the electromagnet rod 232 in the dust absorption cavity 301, in addition, the waste sand can generate more dust in the falling process, the dust in the dust suction cavity 301 is extracted by the dust collector 32 through the first material passing pipe 311 and the dust suction cover 31, and then the dust is discharged into the material receiving tank 305 through the second material passing pipe 321, so that the waste sand can be prevented from generating dust as much as possible in the process of discharging the waste sand into the car hopper of the carrying car, and the dust can be prevented from floating into the air to pollute the atmosphere or influence the manufacturing of workers;

meanwhile, in the process of recovering the waste sand, the output shaft of the second driving machine 286 can drive the cam 287 to rotate, when the tip of the cam 287 is in upward contact with the convex plate 285, the movable plate 283 drives the rotating shaft 23 to move upwards, when the tip of the cam 287 is far away from the convex plate 285, the rotating shaft 23 can move downwards under the elastic force action of the first spring 222 and the second spring 281, so that the rotating shaft 23 can repeatedly move up and down through the work of the second driving machine 286, the electromagnet rod 232 can also move up and down while rotating, the electromagnet rods 232 in the recovery bin 20 and the through cavity 302 can well treat the waste iron in the waste sand, the waste iron in the waste sand is basically adsorbed by the electromagnet rods 232, and the device has high recovery effect and efficiency on the waste iron in the waste sand;

after falling into the car hopper of carrier loader to the waste sand, when collecting the waste sand, stop first driving machine 27, the work of electro-magnet stick 232 and dust catcher 32, and accelerate the slew velocity of second driving machine 286 output shaft, make the up-and-down motion frequency of pivot 23 accelerate, thereby can let adsorb in the fine storehouse 20 that falls into logical chamber 302 from retrieving of the iron scrap on electro-magnet stick 232, again fall into the base from discharge gate 303 outside, realized collecting fast the iron scrap, improved the recovery efficiency to the iron scrap.

Example 2:

referring to fig. 1-5, the present invention provides a technical solution: boats and ships cargo hold rust cleaning waste sand does not fall to ground environmental protection recovery unit, retrieve top fixedly connected with operation storehouse 10 in storehouse 20, the outside in operation storehouse 10 is provided with manway 11, one side of manway 11 is provided with ladder 111, four valve ports 201 have been seted up to the inside bottom in recovery storehouse 20, the equal fixedly connected with discharging pipe 26 in bottom of valve port 201, the bottom of discharging pipe 26 extends to the inside that leads to chamber 302, and discharging pipe 26 is passed to the one end of pivot 23, one side fixed mounting of discharging pipe 26 has pneumatic push-pull valve.

Wherein, a material guide plate 24 is arranged between the four valve ports 201, and side plates 25 are fixedly connected to both sides of the bottom end inside the recovery bin 20.

Wherein, stock guide 24 is the setting of V type, and the top of stock guide 24 is most advanced, and the both sides of stock guide 24 all are 45 degrees with the contained angle between the base 30, and the contained angle between curb plate 25 and the base 30 is 25 degrees to retrieve the waste material in the storehouse 20 can be better discharge from valve port 201.

Further, at the in-process to the waste sand row material, through starting and closing pneumatic push-pull valve, satisfied the requirement to the swift quick close of valve port 201, the staff enters into pedestrian's passageway 11 on one side of operation storehouse 10 through safety ladder 111, makes things convenient for personnel to go up and down, in time observes the recovery storehouse 20 waste sand condition.

The application and benefit of the device are as follows:

the ship cargo compartment rust cleaning waste sand environmental protection recovery unit has been used at present in company's ship repair success, thoroughly solved the waste sand pollution pier problem that the cargo compartment rust cleaning produced, the environmental protection requirement of green ship repair has been satisfied, this system easy operation, it is convenient to maintain, the practicality is strong, company's green ability of repairing the ship has been promoted, when having provided powerful technical support and guarantee for company's ship repair sustainable development, it makes ship repair pier resource operation more smooth to have saved a large amount of costs, concrete success is as follows (calculate according to 5 for the cabin sand volume 80T of a bulk cargo ship 5 ═ 400T):

1. the oil cost of the loader is saved by about 35 liters, 6.4 yuan to 224 yuan, and the cost of a loader driver is about 300 yuan/day;

2. the cost for cleaning waste sand residue and flushing the site is saved by about 150 yuan/person/day by 10 persons to 1500 yuan, and the total cost of a single ship is saved by about 2000 yuan;

3. the time for cleaning the waste sand residue and flushing the site of a single ship is saved by about 5 hours, and the time for loading the waste sand is saved by 2 hours;

4. the site use targets that no waste sand is temporarily stacked at the wharf and the wharf passes smoothly are realized;

5. the environmental protection aims of no landing of derusting waste sand transportation of a ship cargo hold, zero flushing of a wharf and zero discharge of waste water are basically achieved.

In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus may be implemented in other ways. The welding or screwing or winding of the parts to be welded or screwed together as shown or discussed can be assisted by means of devices such as welding torches, screwing with wrenches, etc., and the parts of the device can be made of various materials, such as metal materials, for example, aluminum alloys, steel and copper, by casting or by mechanical stamping.

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 above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. Boats and ships cargo hold rust cleaning waste sand does not fall to ground environmental protection recovery unit, including mount (12), storehouse (20), its characterized in that are retrieved to the inboard middle part fixedly connected with of mount (12): the bottom of the recycling bin (20) is fixedly connected with a base (30), the top of the inner wall of the recycling bin (20) is fixedly connected with four guide cylinders (22) through a fixing plate (21), the inside of each guide cylinder (22) is fixedly connected with a guide sleeve (223), four through cavities (302) are formed in the base (30), the bottom of each through cavity (302) is fixedly connected with a first driving machine (27), an output shaft of each first driving machine (27) is fixedly connected with a driving box (28), a second driving machine (286), a cam (287), a convex plate (285) and a movable plate (283) are arranged in each driving box (28), a rotating shaft (23) is arranged at the top of each driving box (28), the top end of each rotating shaft (23) penetrates through the inside of the recycling bin (20) and extends into the guide cylinders (22), and a mounting groove (304) is formed in the base (30), four dust collectors (32) are fixedly mounted inside the mounting groove (304), and a plurality of electromagnet rods (232) and stirring rods (231) are arranged inside the recovery bin (20) and inside the through cavity (302).

2. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 1, and is characterized in that: the top of the recovery bin (20) is fixedly connected with an operation bin (10), a pedestrian passage (11) is arranged outside the operation bin (10), a ladder way (111) is arranged on one side of the pedestrian passage (11), four valve ports (201) are formed in the bottom end of the interior of the recovery bin (20), discharge pipes (26) are fixedly connected to the bottoms of the valve ports (201), and a pneumatic gate valve is fixedly mounted on one side of each discharge pipe (26).

3. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 2, and is characterized in that: guide plates (24) are arranged among the four valve ports (201), and side plates (25) are fixedly connected to two sides of the bottom end inside the recovery bin (20).

4. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 3, and is characterized in that: the cam (287) is fixedly connected to an output shaft of the second driving machine (286), the convex plate (285) is fixedly connected to the bottom end of the movable plate (283) and used in cooperation with the cam (287), slide rails (282) are fixedly mounted on two sides of the inner wall of the driving box (28), the movable plate (283) is slidably connected with the slide rails (282) through sliders (284), and the bottom end of the rotating shaft (23) slidably penetrates through the inside of the driving box (28) and is fixedly connected with the middle of the top of the movable plate (283). The bottom end of the rotating shaft (23) is also sleeved with a second spring (281).

5. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 4, and is characterized in that: the telescopic rod (221) is fixedly connected to the middle of the top of the inner wall of the guide sleeve (223), a first spring (222) is sleeved on the surface of the telescopic rod (221), and the top end of the rotating shaft (23) penetrates through the guide sleeve (223) in a sliding mode and is connected with the bottom end of the telescopic rod (221) through a bearing.

6. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 5, and is characterized in that: lead to chamber (302) bottom and seted up two discharge gates (303), dust suction chamber (301) have all been seted up to the both sides that lead to chamber (302), the inside fixedly connected with suction hood (31) of dust suction chamber (301), the first material pipe (311) that leads to of input fixed connection of dust catcher (32), the one end that first leads to material pipe (311) runs through to the inside of dust suction chamber (301) and with the one end fixed connection of suction hood (31) through the pipeline, the output fixedly connected with second of dust catcher (32) leads to material pipe (321), dust suction chamber (301) are close to the equal fixedly connected with filter screen (312) in one side that leads to chamber (302).

7. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 6, and is characterized in that: the bottom of the mounting groove (304) is provided with a material receiving groove (305), one end of the second through pipe (321) penetrates through the inside of the material receiving groove (305), and the material receiving groove (305) is provided with a corresponding groove door.

8. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 7, and is characterized in that: a protective shell (280) is fixedly connected to the outside of the driving box (28).

9. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 8, and is characterized in that: the material guide plate (24) is arranged in a V shape, the top of the guide cylinder (22) is arranged in a conical tip shape, and the protective shell (280) is arranged in a U shape.

10. The ship cargo hold rust removal waste sand non-landing environment-friendly recovery device as claimed in claim 9, and is characterized in that: the both sides of stock guide (24) all are 45 degrees with the contained angle between base (30), the contained angle between curb plate (25) and base (30) is 25 degrees, the bottom of suction chamber (301) is the slope setting and is 45 degrees with the contained angle between base (30), the opening has still been seted up to the bottom of filter screen (312).