CN113638457B

CN113638457B - Drag head for drag suction dredger

Info

Publication number: CN113638457B
Application number: CN202110856308.6A
Authority: CN
Inventors: 唐丽铭
Original assignee: Jiangsu Better Environmental Protection Machinery Equipment Co ltd
Current assignee: Jiangsu Better Environmental Protection Machinery Equipment Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-09-16
Anticipated expiration: 2041-07-28
Also published as: CN113638457A

Abstract

The invention relates to the technical field of channel sewage disposal equipment, and discloses a drag head for a drag suction dredger, which comprises a fixed body, wherein a rotating tooth is movably sleeved in an inner cavity of the fixed body, a conveying pipe is fixedly arranged on the upper surface of the fixed body, a movable sleeve is movably sleeved on an extension section of the top of the fixed body, one side of the bottom surface of the movable sleeve is fixedly provided with a drag tooth, and the outer surface of the rotating tooth is sleeved with a driving belt. This drag head for drag suction dredger, be connected with the transmission of pivot through changeing the tooth, and the separator tube is close to one side of the fixed body and is network structure, the other end is the hollow structure of real wall, lower part axis cooperation suit at the conveyer pipe, make the muddy water mixed liquid that gets into in the conveyer pipe can get into inside the separator tube, under the effect of rotatory centrifugal force, the mesh that the separator tube can both be followed to stone and mud that get into in the separator tube discharges, and then reach the separating action of muddy water, make the mud water content of carrying the cabin reduce, and then promote the cabin to load mud more.

Description

Drag head for drag suction dredger

Technical Field

The invention relates to the technical field of channel sewage disposal equipment, in particular to a drag head for a drag suction dredger.

Background

The drag suction dredger is one of suction type, it sucks the mud through the drag head placed in both sides or afterbody of the hull, with the mode work of sucking mud, navigating at the same time, while dredging, put the drag suction pipe into the river bottom, utilize the vacuum action of the dredge pump, absorb the mud from the river bottom through drag head and mud suction pipe and enter the mud storehouse of the dredger, after the mud storehouse is full, rise the drag and navigate to the mud throwing area and open the mud door and unload mud, or discharge the mud excavated outside the ship directly.

After the drag head is transferred to the bottom, inside the rake teeth deepened the sediment, at ship navigation in-process, the rake teeth removed, with the sediment turn-up, under the suction vacuum effect of dredge pump, with inside the mixture of sediment and water carried the cabin from the conveyer pipe, the sediment can be broken by the rotary knife before getting into the conveyer pipe, prevent that the sediment from becoming cubic and blockking up in the conveyer pipe, when meetting hard soil layer, under the effect of hydro-cylinder, can adjust the movable sleeve, make the rake teeth can cross the soil layer.

In the use process of the existing harrow head structure, in order to ensure the stable operation of the harrow head during dredging, a wave compensator is arranged on a ship at the position connected with the harrow head, when the harrow teeth meet a hard soil layer, the movable sleeve rotates under the action of the oil cylinder, the pushing seabed can have an upward moving effect on the fixed body, so that the tension of the wave compensator is reduced, the wave compensator is wound, and after the oil cylinder pushes the movable sleeve to return, the position of the fixed body moves upwards at the moment to drive the position of the harrow teeth to move upwards, so that the excavation depth is reduced; meanwhile, the existing mud-water mixture is sucked and conveyed into the cabin by a mud pump, and the mud-water mixture needs to be additionally separated to discharge seawater.

Disclosure of Invention

The invention provides a drag head for a drag suction dredger, which has the advantages of unchanged excavating depth and reduced water content in sludge conveyed to a cabin, and solves the problems that the drag head moves upwards when crossing a hard soil layer, the subsequent excavating depth becomes shallow, the water content of the sludge conveyed to the cabin is large, and the sludge storage amount of the cabin is reduced.

The invention provides the following technical scheme: a drag head for a drag suction dredger comprises a fixed body, wherein a rotary tooth is movably sleeved in an inner cavity of the fixed body, a conveying pipe is fixedly arranged on the upper surface of the fixed body, a movable sleeve is movably sleeved at an extension section of the top of the fixed body, rake teeth are fixedly installed on one side of the bottom surface of the movable sleeve, a transmission belt is sleeved on the outer surface of the rotary tooth, a rotating shaft is connected in a transmission manner and is communicated with the inside of the conveying pipe, a separation pipe is meshed with the rotating shaft, fixed frames are movably sleeved on the outer surfaces of two ends of the separation pipe and are fixedly installed with the inner surface of the conveying pipe, a spiral plate is integrally formed on the inner surface of the conveying pipe, the other end of the separation pipe is communicated with a water pipe, a hydraulic pump is fixedly installed on the upper surface of the conveying pipe, a pump plug is movably sleeved in the upper cavity of the hydraulic pump, and a spring is fixedly installed on one side of the pump plug, the improved water pump is characterized in that a piston column is movably sleeved on a lower cavity of the hydraulic pump, one end of the piston column is fixedly installed with a movable sleeve, a water tank is fixedly installed on one side of the movable sleeve, a pressing plate is movably sleeved on an inner cavity of the water tank, a push rod is movably sleeved on the upper surface of the pressing plate, the other end of the push rod is movably sleeved with an extension end of a fixed body, a flow channel is formed in one side of the inner part of the water tank, and a first spray nozzle is fixedly installed on one side of the water tank and communicated with the flow channel.

Preferably, a valve sleeve is fixedly installed at the bottom of the inner cavity of the water tank, a valve rod is movably sleeved in the valve sleeve, the top of the valve rod is fixedly installed with a pressing plate, the water pipe is communicated with the pressing plate, a second spray nozzle is fixedly installed on the back of the rake teeth, and the second spray nozzle is connected with the valve sleeve through a pipe.

Preferably, the bottom of one side of the movable sleeve is movably sleeved with a roller, one side of the water tank is communicated with the flow channel and movably sleeved with a screw, and a belt is sleeved between the roller and the screw.

Preferably, the rake teeth are in a half pyramid structure.

Preferably, one end of the separation tube close to the fixing body is of a net structure, and the other end of the separation tube is of a solid-wall hollow structure.

The invention has the following beneficial effects:

1. this drag head for drag suction dredger, be connected with the transmission of pivot through changeing the tooth, and the separation tube is close to one side of the fixed body and is network structure, the other end is the hollow structure of real wall, lower part axis cooperation suit at the conveyer pipe, make the muddy water mixed liquid that gets into in the conveyer pipe can get into the separation tube insidely, under the effect of rotatory centrifugal force, the stone and the mud that get into in the separation tube can both be followed the mesh of separation tube and discharged, and then reach the separating action of muddy water, make the mud water content of carrying in the cabin reduce, and then promote the cabin and load mud more.

2. This harrow head for suction dredger, intercommunication through shower nozzle two and valve barrel, move the in-process that electronic clamp plate moved down at the movable sleeve, can extrude the pressure boost to liquid in the water tank, close the runner and open valve barrel intercommunication shower nozzle two simultaneously, make the liquid in the water tank with high pressure spun form, strike with the big soil layer of rake teeth male density, from two spun high-pressure water columns of shower nozzle, contact diffusion with the big hard soil layer of density, can carry earth diffusion, produce the aeration effect of sea water simultaneously, strike the ulcerate to hard soil layer, make the rake teeth can carry out the work of dredging under the unchangeable condition of pulling force, it is more out of time to have stopped current equipment movable sleeve rotation, the straining force has been reduced, wave compensation arrangement is around rolling up and is leaded to the solid position to move up, the problem that the degree of dredging degree of depth becomes shallow, the equipment degree of dredging degree of depth has been guaranteed.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

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

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a fixed body; 2. rotating the teeth; 3. a delivery pipe; 4. a movable sleeve; 5. rake teeth; 6. a rotating shaft; 7. a separation tube; 8. a fixed mount; 9. a spiral plate; 10. a water pipe; 11. a hydraulic pump; 12. a pump plug; 13. a spring; 14. a piston post; 15. a water tank; 16. pressing a plate; 17. a push rod; 18. a flow channel; 19. a first spray nozzle; 20. a valve stem; 21. a valve housing; 22. a second spray head; 23. a roller; 24. a screw; 25. a belt.

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.

Referring to fig. 1-3, a drag head for a drag suction dredger comprises a fixed body 1, a rotating tooth 2 is movably sleeved in an inner cavity of the fixed body 1, a conveying pipe 3 is fixedly installed on the upper surface of the fixed body 1, a movable sleeve 4 is movably sleeved in an extension section of the top of the fixed body 1, a drag tooth 5 is fixedly installed on one side of the bottom surface of the movable sleeve 4, the drag tooth 5 is of a half pyramid structure, so that the drag tooth 5 is firstly inserted into sludge in a point form in the dredging process, then the sludge is cut in a line form, the sludge is then turned upwards and backwards along with the drag tooth 5, the dredging effect of the drag tooth 5 on the sludge is improved, a driving belt is sleeved on the outer surface of the rotating tooth 2 and is in driving connection with a rotating shaft 6, the rotating shaft 6 is communicated with the inside of the conveying pipe 3, a separating pipe 7 is engaged with the rotating shaft 6, a fixing frame 8 is movably sleeved on the outer surface of two ends of the separating pipe 7, and the fixing frame 8 is fixedly installed on the inner surface of the conveying pipe 3, one end of the separation tube 7 close to the fixed body 1 is of a net structure, the other end of the separation tube 7 is of a solid-wall hollow structure, so that muddy water mixed liquid entering the conveying tube 3 can enter the separation tube 7, stones and sludge entering the separation tube 7 can be discharged from meshes of the separation tube 7 under the action of rotating centrifugal force, further the separation effect of muddy water is achieved, a spiral plate 9 is integrally formed on the inner surface of the conveying tube 3, the mixed liquid can be guided by the spiral plate 9 after entering the conveying tube 3, so that the mixed liquid has a rotating effect and is matched with the rotating direction of the separation tube 7, sludge rotates upwards, the other end of the separation tube 7 is communicated with a water pipe 10, a hydraulic pump 11 is fixedly installed on the upper surface of the conveying tube 3, a pump plug 12 is movably sleeved on an upper cavity in the hydraulic pump 11, a spring 13 is fixedly installed on one side of the pump plug 12, a piston column 14 is movably sleeved on a lower cavity of the hydraulic pump 11, one end of a piston column 14 is fixedly installed with a movable sleeve 4, one side of the movable sleeve 4 is fixedly provided with a water tank 15, an inner cavity of the water tank 15 is movably sleeved with a pressure plate 16, the upper surface of the pressure plate 16 is movably sleeved with a push rod 17, the other end of the push rod 17 is movably sleeved with an extension end of a fixed body 1, one side inside the water tank 15 is provided with a flow channel 18, one side of the water tank 15 is fixedly provided with a first spray nozzle 19 communicated with the flow channel 18, the bottom of the inner cavity of the water tank 15 is fixedly provided with a valve sleeve 21, the inside of the valve sleeve 21 is movably sleeved with a valve rod 20, the top of the valve rod 20 is fixedly installed with the pressure plate 16, a water pipe 10 is communicated with the pressure plate 16, the back of a rake tooth 5 is fixedly provided with a second spray nozzle 22, the second spray nozzle 22 is connected with the valve sleeve 21 through the communication between the second spray nozzle 22 and the valve sleeve 21, liquid in the water tank 15 can be squeezed and pressurized in the process of moving the electric pressure plate 16 downwards by the movable sleeve 4, meanwhile, the flow passage 18 is closed and the valve sleeve 21 is opened to be communicated with the second nozzle 22, so that liquid in the water tank 15 is impacted with a soil layer with high density inserted by the rake teeth 5 in a high-pressure spraying mode, high-pressure water columns sprayed out of the second nozzle 22 are in contact diffusion with hard soil layer with high density and can carry soil for diffusion, and air aeration effect of seawater is generated to impact and disperse the hard soil layer, so that the rake teeth 5 can perform dredging operation under the condition of unchanged tension, the problem that the position of the fixed body 1 moves upwards and the dredging depth becomes shallow due to winding of the wave compensation device is solved, the dredging depth of the equipment is ensured, the bottom of one side of the movable sleeve 4 is movably sleeved with the roller 23, one side of the water tank 15 and the flow passage 18 are movably sleeved with the screw rod 24, and the belt 25 is sleeved between the roller 23 and the screw rod 24, through the extrusion of screw rod 24 for the water discharge pressure in the water tank 15 is big, has certain drive force to movable sleeve 4, and then makes rake teeth 5 under certain pulling force, and 19 blowout thrusts of shower nozzle can increase the excavation hardness of rake teeth 5, improve equipment's the effect of dredging.

The working principle of the drag head of the invention is as follows:

the fixed body 1 is placed into the sea through a wave compensator and sinks on the sea bottom, a rake tooth 5 excavates a mud layer under the moving tension of a ship, excavated mud is unscrewed by a rotating tooth 2 and is dispersed in seawater to be mixed, a mud pump generates suction force on a conveying pipe 3, mixed liquid flows upwards from the conveying pipe 3 to a cabin, the rotating tooth 2 rotates and is driven to a rotating shaft 6 through a belt to drive a separating pipe 7 to rotate through mechanical energy, the mixed liquid flowing in the conveying pipe 3 is guided by a spiral plate 9 and rises spirally, meanwhile, the separating pipe 7 rotates to have centrifugal force, the mixed liquid can be separated, the separated seawater is conveyed into a water tank 15 through a water pipe 10, a roller 23 moves along with the dredging movement of a movable sleeve 4, the roller 23 rolls in contact with the bottom surface to drive a screw rod 24 to rotate, the seawater in a flow passage 18 is driven to be pressurized and discharged, and the water is sprayed from a spray head one 19 to react to provide forward thrust for the movable sleeve 4, increase rake teeth 5 dig mud thrust, meet the big hardpan of density when rake teeth 5, the fixed body 1 removes under the pulling force effect, movable sleeve 4 stops to part with fixed body 1 level, make push rod 17 rotate and promote clamp plate 16 downstream, open valve barrel 21 when plugging up runner 18, clamp plate 16 pushes down the pressure that increases the water in the water tank 15, make two 22 blowout backs of shower nozzle have the aeration effect, strike the breakage to hardpan, under the restoring force of spring 13 and intracavity negative pressure effect, drive piston post 14 return.

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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a drag head for drag suction dredger, includes fixed body (1), its characterized in that: the inner cavity movable sleeve of the fixed body (1) is provided with a rotary tooth (2), the upper surface of the fixed body (1) is fixedly provided with a conveying pipe (3), the top extension section of the fixed body (1) is movably provided with a movable sleeve (4), one side of the bottom surface of the movable sleeve (4) is fixedly provided with a rake tooth (5), the outer surface of the rotary tooth (2) is provided with a driving belt in a sleeved mode, the driving belt is connected with a rotating shaft (6), the rotating shaft (6) is communicated with the inside of the conveying pipe (3), the rotating shaft (6) is meshed with a separating pipe (7), the outer surfaces at the two ends of the separating pipe (7) are movably provided with a fixing frame (8) in a sleeved mode, the fixing frame (8) is fixedly installed on the inner surface of the conveying pipe (3), the inner surface of the conveying pipe (3) is integrally formed with a spiral plate (9), and the other end of the separating pipe (7) is communicated with a water pipe (10), a hydraulic pump (11) is fixedly arranged on the upper surface of the delivery pipe (3), a pump plug (12) is movably sleeved on an upper cavity in the hydraulic pump (11), a spring (13) is fixedly arranged on one side of the pump plug (12), a piston column (14) is movably sleeved on a lower cavity of the hydraulic pump (11), one end of the piston column (14) is fixedly arranged with the movable sleeve (4), one side of the movable sleeve (4) is fixedly provided with a water tank (15), a pressing plate (16) is movably sleeved in the inner cavity of the water tank (15), a push rod (17) is movably sleeved on the upper surface of the pressing plate (16), the other end of the push rod (17) is movably sleeved with the extending end of the fixed body (1), a flow channel (18) is formed in one side of the interior of the water tank (15), and a first spray head (19) is fixedly arranged on one side of the water tank (15) and communicated with the flow channel (18).

2. The drag head for a drag suction dredger according to claim 1, wherein: the bottom fixed mounting of water tank (15) inner chamber has valve barrel (21), the inside movable sleeve of valve barrel (21) is equipped with valve rod (20), the top and clamp plate (16) fixed mounting of valve rod (20), water pipe (10) and clamp plate (16) intercommunication, the back fixed mounting of rake teeth (5) has shower nozzle two (22), shower nozzle two (22) and valve barrel (21) union coupling.

3. The drag head for a drag suction dredger according to claim 1, wherein: the bottom of one side of the movable sleeve (4) is movably sleeved with a roller (23), one side of the water tank (15) is communicated with the flow channel (18) and is movably sleeved with a screw (24), and a belt (25) is sleeved between the roller (23) and the screw (24).

4. The drag head for a drag suction dredger according to claim 1, wherein: the rake teeth (5) are of a half pyramid structure.

5. The drag head for a drag suction dredger according to claim 1, wherein: one end of the separation tube (7) close to the fixing body (1) is of a net structure, and the other end of the separation tube (7) is of a solid-wall hollow structure.