CN113684881A

CN113684881A - Dredger suitable for pond desilting

Info

Publication number: CN113684881A
Application number: CN202111041356.6A
Authority: CN
Inventors: 黄叶飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-11-23
Anticipated expiration: 2041-09-07
Also published as: CN113684881B

Abstract

The invention relates to the field of small and medium-sized pond dredging equipment, in particular to a dredger suitable for pond dredging, which comprises a hull, wherein the hull is of a double-buoyancy-box type track structure, a bridge is hinged between a left buoyancy tank and a right buoyancy tank of the hull, and the front end of the bridge is hinged with an installation frame; install at the front end of mounting bracket and rub the mechanism, the rear that just is located to rub the mechanism on the mounting bracket is fixed with collects auger mechanism, collect auger mechanism toward middle the material collect and one side fixedly connected with who collects auger mechanism intermediate position inhale mud mechanism, it is located between left flotation tank and the right flotation tank to inhale mud mechanism. The invention has more compact structural design and relatively smaller volume, and is very suitable for small and medium-sized ponds.

Description

Dredger suitable for pond desilting

Technical Field

The invention relates to pond dredging equipment, in particular to a dredger suitable for dredging a pond.

Background

Due to the continuous accumulation of excrement, remains, residual baits, fertilization and the like of aquaculture animals and the continuous deposition of surface scouring matters and the like in the pond, deposited organic matters are fermented and decomposed by microorganisms to form a large amount of humus which is mixed with the infiltration soil on the bottom surface of the pond to form sludge with a certain thickness. If the sludge is excessive, the pond water is lack of oxygen, the toxic substances are increased, the harmful bacteria are increased, and the like, so that the cultured animals are harmed. Therefore, the pond, particularly the intensive culture sugar, needs to be subjected to dredging treatment regularly, and the general dredging modes comprise pond dredging and water carrying dredging. In the prior art, small-sized equipment such as a silt remover, a slurry pump and the like is mainly adopted for dredging with water, but the equipment cannot automatically move in pond water, and cannot be restrained when meeting hard silt, and a conventional dredger is not suitable for dredging of small and medium ponds.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the dredger which has the advantages of compact structure, small volume, long service life and good dredging effect and is suitable for dredging the pond, and the dredger can freely walk no matter the edge of the pond is high or low.

In order to achieve the purpose, the invention adopts the technical scheme that: a dredger suitable for dredging a pond comprises a dredger body and is characterized in that the dredger body is of a double-buoyancy-box-type crawler structure, the double-buoyancy-box-type crawler structure comprises a left buoyancy box, a right buoyancy box, a left crawler and a right crawler, wherein the left crawler is wound on the left buoyancy box and is driven by a corresponding first hydraulic motor, and the right crawler is wound on the right buoyancy box and is driven by a corresponding first hydraulic motor; a bridge is hinged between the left buoyancy tank and the right buoyancy tank and is positioned at the front side of the ship body, a first hydraulic cylinder is hinged between the bridge and the left buoyancy tank and between the bridge and the right buoyancy tank respectively, and the lifting height of the bridge is adjusted through the two first hydraulic cylinders; the front end of the bridge is hinged with an installation frame, a second hydraulic cylinder is hinged between the bridge and the installation frame, and the mud inlet angle of the installation frame is adjusted through the second hydraulic cylinder; the front end of the mounting frame is provided with the mincing mechanism, the collecting auger mechanism is fixed on the mounting frame and behind the mincing mechanism, the collecting auger mechanism collects materials towards the middle, one side of the middle position of the collecting auger mechanism is fixedly connected with the mud absorbing mechanism, and the mud absorbing mechanism is positioned between the left floating box and the right floating box; an installation rack is fixed between the left buoyancy tank and the right buoyancy tank, and a control chamber is fixedly connected to the installation rack.

Preferably, an arc-shaped mud shoveling plate is fixedly connected between the mincing mechanism and the collecting auger mechanism on the mounting frame, and a plurality of filtering holes are formed in the mud shoveling plate. The effect of shovel mud board can shovel broken silt mud up, and the design of a plurality of filtration pores on the shovel mud board effectively blocks large granule impurity and other materials (like stone, thick impurity etc.) that are not convenient for get into the mud suction mechanism, only allows in little granule mud or other little granule impurity gets into the mud suction mechanism.

Preferably, rub mechanism includes first pivot, protective sheath, second hydraulic motor, a plurality of sword of rubbing, and wherein first pivot passes through bearing and bearing frame to be fixed on the mounting bracket, and fixedly connected with second hydraulic motor behind the bearing frame that corresponds is passed to first pivot one end, and a plurality of sword of rubbing and a plurality of sword evenly distributed of rubbing are on the outer peripheral face of first pivot in fixedly connected with in first pivot, and the position of being connected is covered with the protective sheath outside first pivot and being located first pivot and rubbing the sword, has seted up a plurality of holes that supplies to rub the sword and wear out on the protective sheath.

Preferably, the collecting auger mechanism comprises a second rotating shaft, two sections of helical blades and a third hydraulic motor, wherein the second rotating shaft is fixedly connected to the mounting frame through a bearing and a bearing seat, one end of the second rotating shaft penetrates through the corresponding bearing seat and then is fixedly connected with the third hydraulic motor, the second rotating shaft is fixedly connected with two sections of helical blades with opposite helical directions, and the two sections of helical blades with opposite helical directions are used for concentrating materials from two sides to the middle.

Preferably, inhale mud mechanism and include stereoplasm mud pumping pipe, conveying hose, body, mud pump, stereoplasm mud pumping pipe one end is fixed on the rear side in the middle of collecting auger mechanism, and the stereoplasm mud pumping pipe other end passes the back and at tip fixedly connected with conveying hose from between left flotation tank and the right flotation tank, can dismantle on conveying hose's different positions and be connected with the body, conveying hose's other end fixedly connected with mud pump.

Preferably, the mounting bracket includes about two S type backplate, about two otic placodes, wherein two left and right backplate difference fixed connection are on the left and right both sides of S type backplate, shovel mud board fixed connection is on the front side of two left and right backplate, and enclose into the relative confined shell of collecting auger mechanism between two left and right backplate, S type backplate and the shovel mud board, and the inner chamber that stereoplasm mud pumping pipe and shell enclose is linked together.

Preferably, the high end of the shovel plate is positioned at the forward bulge of the S-shaped back plate of the mounting frame. Can effectively concentrate the silt that gets into in the shell and draw in to the centre of collecting auger mechanism in. This design can make the silt that gets into to collect the auger mechanism effectively be inhaled and inhale the mud mechanism in, further ensure the clean degree of clearance silt.

Preferably, the hard mud pumping pipe is fixedly connected with a pipeline cleaning mechanism which is fixedly connected to the bottom of the mounting rack, the pipeline cleaning mechanism comprises a rotating body, a clean water pipe, a toothed ring, a gear, a fourth hydraulic motor and a bearing, wherein the hard mud pumping pipe is divided into two sections with different lengths near the front end of the hard mud pumping pipe, one end of the shorter hard mud pumping pipe is fixedly connected to the shell of the collecting auger mechanism, the other end of the shorter hard mud pumping pipe is sleeved with the bearing and is fixedly connected with one side of the rotating body through the bearing, one end of the longer hard mud pumping pipe is fixedly connected with the conveying hose, the other end of the longer hard mud pumping pipe is fixedly connected with the other side of the rotating body through the other bearing, a cavity is formed in the rotating body, two conducting holes are formed in the lower part of the side of the cavity connected with the shorter hard mud pumping pipe, and two conducting holes are also formed in the upper part of the side of the cavity connected with the longer hard mud pumping pipe, the phase difference of the conducting holes at the two sides of the rotating body is 90 degrees; the rotating body is also fixedly connected and communicated with a clear water pipe; a gear ring is sleeved and fixedly connected with the rotating body, and a gear is fixedly connected to an output shaft of the fourth hydraulic motor and meshed with the gear ring. This design can be after carrying out silt clearance and finishing, with pipeline, especially the clean up in the delivery hose, prevent that silt solidification from influencing the transport next time in the pipeline, can regularly wash shovel mud board etc. when carrying out the transport simultaneously, prevents that the filtration pore on the shovel mud board from blockking up, effectively guarantees the validity of silt clearance.

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

(1) the double-buoyancy-tank crawler belt structure is used as a foundation for land and water walking, the mud absorbing mechanism is arranged between the two buoyancy tanks, the control chamber is arranged above the two buoyancy tanks, the mincing mechanism and the collecting auger mechanism are arranged on the front sides of the two buoyancy tanks, and the like, so that the double-buoyancy-tank crawler belt structure is more compact in structural design, relatively smaller in size and very suitable for small and medium size ponds;

(2) the ground sludge can be effectively concentrated by effectively combining the grinding mechanism with the collecting auger mechanism and the like, so that the subsequent sludge suction mechanism can work conveniently, and the sludge can be cleaned more cleanly;

(3) according to the invention, through the arrangement of the first hydraulic cylinder, the second hydraulic cylinder and the like, the angle and the height of the grinding mechanism for entering the sludge can be effectively adjusted, so that the sludge is more convenient to clean;

(4) according to the invention, the mud shoveling plate with the filter holes is arranged between the mincing mechanism and the collecting auger mechanism, so that larger particles can be effectively prevented from entering the mud absorbing mechanism, and the pipeline of the mud absorbing mechanism is effectively prevented from being blocked.

The invention has the advantages of relatively simple structure, small volume, relatively light whole body, free walking no matter the height of the pond ridge (pond edge), suitability for dredging of medium and small size ponds, convenient operation, and only needing to sit in the control room for control, more importantly, good dredging effect, clean cleaning, capability of walking and cleaning at the same time, and realization of relatively no dead angle cleaning.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the structure of the shovel plate and the mounting bracket according to the present invention;

FIG. 3 is a schematic front view of the pipe cleaning mechanism according to the present invention;

FIG. 4 is a sectional view of the pipe cleaning mechanism according to the present invention;

FIG. 5 is a schematic view of the position of the through hole on the left side of the rotating body according to the present invention;

FIG. 6 is a schematic view of the right side through hole of the rotating body according to the present invention;

the device comprises a left buoyancy tank, a right buoyancy tank, a left crawler belt, a right crawler belt, a bridge frame, a first hydraulic cylinder, a second hydraulic cylinder, a mounting frame, a 8.1 guard plate, a 8.2 back plate, a 8.3 lug plate, a 9 rubbing mechanism, a 9.1 first rotating shaft, a 9.2 protective sleeve, a 9.3 second hydraulic motor, a 9.4 rubbing knife, a 10 collecting auger mechanism, a 10.1 shell, a 10.2 second rotating shaft, a 11 mud suction mechanism, a 11.1 hard mud suction pipe, a 11.2 conveying hose, a 11.3 floating body, a 12 control chamber, a 13 shovel plate, a 13.1 filter hole, a 14 mounting rack, a 15 rotating body, a 15.1 conducting hole, a 16 clear water pipe, a 17, a toothed ring, a 18 gear, a 19 and a fourth hydraulic motor.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in 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 only partial embodiments of the present application, but not all 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 application.

It should be noted that, in the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the details are not described below with reference to the prior art and the conventional common general knowledge. The fixed connection, the fixed connection and the like are conventional bolt fixed connection, welding and the like, and the detachable connection is also a conventional detachable connection mode.

As shown in fig. 1-4, the dredger suitable for dredging a pond provided by the invention comprises a dredger body, wherein the dredger body is of a double-buoyancy-box-type crawler belt structure, the double-buoyancy-box-type crawler belt structure comprises a left buoyancy tank 1, a right buoyancy tank 2, a left crawler belt 3 and a right crawler belt 4, wherein the left crawler belt 3 is wound on the left buoyancy tank 1 and the left crawler belt 3 is driven by a corresponding first hydraulic motor, the right crawler belt 4 is wound on the right buoyancy tank 2 and the right crawler belt 4 is driven by a corresponding first hydraulic motor; a bridge frame 5 is hinged between the left buoyancy tank 1 and the right buoyancy tank 2, the bridge frame 5 is positioned on the front side of the ship body, first hydraulic cylinders 6 are hinged between the bridge frame 5 and the left buoyancy tank 1 and between the bridge frame 5 and the right buoyancy tank 2, and the lifting height of the bridge frame 5 is adjusted through the two first hydraulic cylinders 6; the front end of the bridge frame 5 is hinged with a mounting frame 8, a second hydraulic cylinder 7 is hinged between the bridge frame 5 and the mounting frame 8, and the mud inlet angle of the mounting frame 8 is adjusted through the second hydraulic cylinder 7; the front end of the mounting frame 8 is provided with a mincing mechanism 9, a collecting auger mechanism 10 is fixed on the mounting frame 8 and behind the mincing mechanism 9, the collecting auger mechanism 10 collects materials towards the middle, a mud absorbing mechanism 11 is fixedly connected to one side of the middle position of the collecting auger mechanism 10, and the mud absorbing mechanism 11 penetrates through the space between the left buoyancy tank 1 and the right buoyancy tank 2; an installation rack 14 is fixedly connected between the left buoyancy tank 1 and the right buoyancy tank 2, and a control room 12 is fixedly connected to the installation rack 14.

The mounting frame 8 comprises a left S-shaped guard plate 8.1, a right S-shaped back plate 8.2 and a left ear plate 8.3, wherein the left guard plate 8.1 and the right guard plate 8.1 are respectively and fixedly connected to the front ends of the left side and the right side of the S-shaped back plate 8.2, and the rear ends of the left ear plate 8.3 and the right ear plate 8.3 are fixedly connected to the front ends of the corresponding guard plates or the shovel plates 13; the same arc-shaped mud shoveling plate 13 is fixedly connected between the front sides of the left protective plate 8.1 and the right protective plate 8.1, and a plurality of filtering holes 13.1 are formed in the mud shoveling plate 13; and a relatively closed shell 10.1 of the collecting auger mechanism 10 is enclosed between the left protective plate 8.1, the right protective plate 8.1, the S-shaped back plate 8.2 and the mud shoveling plate 13, and an inner cavity enclosed by the hard mud pumping pipe 11.1 and the shell 10.1 is communicated. The effect of shovel mud board 13 can shovel broken silt mud up, and the design of a plurality of filtration pores on shovel mud board 13 effectively blocks large granule impurity and other materials (like stone, thick impurity etc.) that are not convenient for get into the mud mechanism, only allows in little granule mud bar or other little granule impurity gets into the mud mechanism. In addition, the high-end 8.2 forward protruding departments of S type backplate that is located mounting bracket 8 of shovel mud board 13 can be effectively concentrated to the silt that gets into in the shell 10.1 and draw in to the centre of collecting auger mechanism 10 like this, can make the silt that gets into to collect auger mechanism 10 effectively by the suction mud mechanism 11 in, further ensure the clean degree of clearance silt.

The mincing mechanism 9 comprises a first rotating shaft 9.1, a protective sleeve 9.2, a second hydraulic motor 9.3 and a plurality of mincing knives 9.4, wherein two ends of the first rotating shaft 9.1 are fixed on the left and right ear plates 8.3 of the mounting frame 8 through bearings and bearing seats, one end of the first rotating shaft 9.1 penetrates through the corresponding bearing seat and then is fixedly connected with the second hydraulic motor 9.3, the first rotating shaft 9.1 is fixedly connected with the plurality of mincing knives 9.4, the plurality of mincing knives 9.4 are uniformly distributed on the peripheral surface of the first rotating shaft 9.1, the protective sleeve 9.2 is covered outside the first rotating shaft 9.1 and positioned between the first rotating shaft 9.1 and the mincing knives 9.4, the protective sleeve 9.2 is provided with a plurality of holes for the mincing knives to penetrate through, and the protective sleeve 9.2 is used for protecting the connecting part of the mincing knives 9.4 and the first rotating shaft 9.1 so as to prevent the connecting part from being bent and even broken under the action of external force.

The collecting auger mechanism 10 comprises a second rotating shaft 10.2, two sections of helical blades and a third hydraulic motor, wherein two ends of the second rotating shaft 10.2 are fixedly connected to the left protective plate 8.1 and the right protective plate 8.1 of the mounting frame 8 through bearings and bearing seats, one end of the second rotating shaft 10.2 penetrates through the corresponding bearing seat and then is fixedly connected with the third hydraulic motor, two sections of helical blades with opposite helical directions are fixedly connected to the second rotating shaft 10.2, and the two sections of helical blades with opposite helical directions are used for concentrating materials from two sides to the middle.

Inhale mud mechanism 11 and include stereoplasm mud pumping pipe 11.1, conveying hose 11.2, body 11.3, mud pump, stereoplasm mud pumping pipe 11.1 one end is fixed on collecting rear side backplate 8.2 in the middle of auger mechanism 10 and the inner chamber that stereoplasm mud pumping pipe 11.1 and shell 10.1 enclose is linked together, and stereoplasm mud pumping pipe 11.1 other end passes the back and can dismantle at the tip and be connected with conveying hose 11.2 from between left flotation tank 1 and the right flotation tank 2, can dismantle on conveying hose 11.2's the different positions and be connected with body 11.3, and conveying hose 11.2's the other end can be dismantled and be connected with mud pump. And pumping the minced thin sludge by a hydraulic sludge pump and conveying the minced thin sludge into a slurry collecting and distributing pool on the shore.

According to the requirement, the invention also fixedly connects a pipeline cleaning mechanism on the hard mud pumping pipe 11.1, the pipeline cleaning mechanism is arranged as close to the collecting auger mechanism 10 as possible, the pipeline cleaning mechanism is fixedly connected with the bottom of the mounting rack 14, the pipeline cleaning mechanism comprises a rotating body 15, a clean water pipe 16, a toothed ring 17, a gear 18, a fourth hydraulic motor 19 and a bearing, wherein the hard mud pumping pipe 11.1 is divided into two sections with different lengths near the front end thereof, one end of the shorter hard mud pumping pipe 11.1 is fixedly connected with the shell 10.1 of the collecting auger mechanism 10, the other end is sheathed with a bearing and is fixedly connected with one side of the rotating body 15 through the bearing, one end of the longer hard mud pumping pipe 11.1 is connected with the conveying hose 11.2, the other end is fixedly connected with the other side of the rotating body 15 through the other bearing, a cavity is formed in the rotating body 15, and is arranged below the side (namely the left side in fig. 4) connected with the shorter hard mud pumping pipe 11.1 Two through holes 15.1 are also arranged above the side (the right side in figure 4) connected with the longer hard mud pumping pipe 11.1, the phase difference of the through holes on two sides of the rotating body 15 is 90 degrees, and the through holes are arranged to ensure that three through positions exist in the rotating process of the rotating body: one is to conduct the shorter hard mud pumping pipe on the left side with the longer hard mud pumping pipe on the right side, the other is to conduct the longer hard mud pumping pipe on the right side with the clean water pipe 16, and the last is to conduct the shorter hard mud pumping pipe on the left side with the clean water pipe 16; the rotating body 15 is also fixedly connected and communicated with a clear water pipe 16; a gear ring 17 is sleeved and fixedly connected to the rotating body 15, and a gear 18 is fixedly connected to an output shaft of a fourth hydraulic motor 19, and the gear 18 is engaged with the gear ring 19. This design can be after carrying out silt clearance and finishing, with pipeline, especially the clean up in the delivery hose, prevent that silt solidification from influencing the transport next time in the pipeline, can regularly wash shovel mud board etc. when carrying out the transport simultaneously, prevents that the filtration pore on the shovel mud board from blockking up, effectively guarantees the validity of silt clearance.

When the double-floating-box type crawler belt type sludge collecting device is used, an operator sits in the control room to operate an operating rod of a corresponding hydraulic system, the double-floating-box type crawler belt type sludge collecting device is opened into a pond, the double-floating-box type crawler belt type sludge collecting device can freely walk regardless of the height of a pond ridge (edge), after entering the pond, the height and the sludge entering angle of the mounting frame are adjusted according to the height of sludge in the pond, the hydraulic motors of the mincing mechanism and the auger collecting mechanism are started, the sludge minced by the mincing mechanism is shoveled by the sludge shoveling plate and enters the auger collecting mechanism through the filter holes, under the action of the blades of the bidirectional auger, the sludge is collected towards the middle and then is sucked by the sludge sucking mechanism and conveyed to the slurry collecting and dispersing pool at the bank.

Claims

1. A dredger suitable for dredging a pond comprises a dredger body and is characterized in that the dredger body is of a double-buoyancy-box-type crawler structure, the double-buoyancy-box-type crawler structure comprises a left buoyancy box, a right buoyancy box, a left crawler and a right crawler, wherein the left crawler is wound on the left buoyancy box and is driven by a corresponding first hydraulic motor, and the right crawler is wound on the right buoyancy box and is driven by a corresponding first hydraulic motor; a bridge is hinged between the left buoyancy tank and the right buoyancy tank and is positioned at the front side of the ship body, a first hydraulic cylinder is hinged between the bridge and the left buoyancy tank and between the bridge and the right buoyancy tank respectively, and the lifting height of the bridge is adjusted through the two first hydraulic cylinders; the front end of the bridge is hinged with an installation frame, a second hydraulic cylinder is hinged between the bridge and the installation frame, and the mud inlet angle of the installation frame is adjusted through the second hydraulic cylinder; the front end of the mounting frame is provided with the mincing mechanism, the collecting auger mechanism is fixed on the mounting frame and behind the mincing mechanism, the collecting auger mechanism collects materials towards the middle, one side of the middle position of the collecting auger mechanism is fixedly connected with the mud absorbing mechanism, and the mud absorbing mechanism is positioned between the left floating box and the right floating box; an installation rack is fixed between the left buoyancy tank and the right buoyancy tank, and a control chamber is fixedly connected to the installation rack.

2. The dredger suitable for pond dredging according to claim 1, wherein an arc-shaped shoveling plate is fixedly connected to the mounting frame and located between the mincing mechanism and the collecting auger mechanism, and a plurality of filtering holes are formed in the shoveling plate.

3. The dredger suitable for pond dredging according to claim 1 or 2, wherein the mincing mechanism comprises a first rotating shaft, a protective sleeve, a second hydraulic motor, and a plurality of mincing knives, wherein the first rotating shaft is fixed on the mounting frame through a bearing and a bearing seat, one end of the first rotating shaft penetrates through the corresponding bearing seat and then is fixedly connected with the second hydraulic motor, the plurality of mincing knives are fixedly connected to the first rotating shaft and are uniformly distributed on the outer peripheral surface of the first rotating shaft, the protective sleeve is covered outside the first rotating shaft and at the connecting part between the first rotating shaft and the mincing knives, and a plurality of holes for the mincing knives to penetrate through are formed in the protective sleeve.

4. The dredger suitable for pond dredging according to claim 1 or 2, wherein the collecting auger mechanism comprises a second rotating shaft, two sections of helical blades and a third hydraulic motor, wherein the second rotating shaft is fixedly connected to the mounting frame through a bearing and a bearing seat, one end of the second rotating shaft penetrates through the corresponding bearing seat and then is fixedly connected with the third hydraulic motor, the second rotating shaft is fixedly connected with two sections of helical blades with opposite helical directions, and the two sections of helical blades with opposite helical directions are used for concentrating materials from two sides to the middle.

5. The dredger suitable for pond dredging according to claim 1 or 2, characterized in that the mud suction mechanism comprises a hard mud suction pipe, a conveying hose, a floating body and a mud suction pump, one end of the hard mud suction pipe is fixed on the rear side in the middle of the collecting auger mechanism, the other end of the hard mud suction pipe penetrates between the left buoyancy tank and the right buoyancy tank and is fixedly connected with the conveying hose at the end part, the floating body is detachably connected to different positions of the conveying hose, and the other end of the conveying hose is fixedly connected with the mud suction pump.

6. The dredger suitable for pond desilting of claim 2, characterized in that, the mounting bracket includes two S type backplate about, S type backplate, two otic placodes about, wherein two left and right backplate fixed connection respectively are on the left and right both sides of S type backplate, shovel mud board fixed connection is on the front side of two left and right backplate, and enclose into the relative confined shell of collecting auger mechanism between two left and right backplate, S type backplate and the shovel mud board, and the stereoplasm is taken out the inner chamber that mud pipe and shell enclose and is linked together.

7. A dredger suitable for pond dredging according to claim 6, wherein the high end of the scraper blade is located at a forward projection of the S-shaped back plate of the mounting frame.

8. The dredger suitable for pond dredging according to claim 1, wherein a pipe cleaning mechanism is fixedly connected to the hard dredge pipe, the pipe cleaning mechanism is fixedly connected to the bottom of the mounting rack, the pipe cleaning mechanism comprises a rotating body, a clean water pipe, a toothed ring, a gear, a fourth hydraulic motor and a bearing, wherein the hard dredge pipe is divided into two sections with different lengths near the front end of the hard dredge pipe, one end of the shorter hard dredge pipe is fixedly connected to the housing of the collecting auger mechanism, the other end of the shorter hard dredge pipe is sleeved with a bearing and is fixedly connected to one side of the rotating body through the bearing, one end of the longer hard dredge pipe is fixedly connected to the delivery hose, the other end of the longer hard dredge pipe is fixedly connected to the other side of the rotating body through the other bearing, the rotating body is formed with a cavity, and the cavity is provided with two through holes below the side connected to the shorter hard dredge pipe, Two through holes are also formed above the side connected with the longer hard mud pumping pipe, and the phase difference of the through holes on the two sides of the rotating body is 90 degrees; the rotating body is also fixedly connected and communicated with a clear water pipe; a gear ring is sleeved and fixedly connected with the rotating body, and a gear is fixedly connected to an output shaft of the fourth hydraulic motor and meshed with the gear ring.