CN210766937U

CN210766937U - River and lake bed surface layer dredging system

Info

Publication number: CN210766937U
Application number: CN201921090898.0U
Authority: CN
Inventors: 范建平; 魏民; 陈桦; 谭均
Original assignee: Chongqing Hongyuan Seepage Water Intake Technology Co ltd
Current assignee: Chongqing Hongyuan Seepage Water Intake Technology Co ltd
Priority date: 2019-07-08
Filing date: 2019-07-12
Publication date: 2020-06-16
Anticipated expiration: 2029-07-12

Abstract

The utility model provides a desilting system for the surface layer of a river or lake bed, which comprises a ship body, a desilting device which moves along with the ship body and can go deep into the water bottom, and a power supply device for supplying power to the desilting device, wherein the desilting device is connected with a blow-off pipe; the dredging device comprises at least one stirring mechanism and at least one sewage suction pump; the stirring mechanism is used for stirring the silt at the water bottom to separate the silt from the water bottom so as to form silt slurry in the water; the inlet of the sewage suction pump or the inlet of the sludge pipe communicated with the inlet can be extended into the sludge slurry, the outlet of the sewage suction pump is communicated with the sewage discharge pipe, and the sludge slurry in the water is pumped by the sewage suction pump and is discharged through the sewage discharge pipe. When the sludge cleaning machine works, the stirring mechanism stirs a sludge layer at the bottom of the water to enable the sludge to be separated from the bottom of the water to form sludge slurry in the water, and the sludge slurry in the water is pumped by the sewage suction pump and is conveyed out through the sewage discharge pipe; the sludge is absorbed while stirring, and the dredging effect is good.

Description

River and lake bed surface layer dredging system

Technical Field

The utility model belongs to the technical field of the silt clearance, concretely relates to river, lake bed top layer desilting system.

Background

The percolation water taking technology is a water taking technology which converts river water into underground underflow water by using a sand and pebble layer on a natural river bed as a filter medium and then takes out the ground for direct use by users. Along with the operation of infiltration water taking work, the mud can be continuously accumulated on the surface layer of sand pebbles in the river bed, and the infiltration of river water is directly influenced; meanwhile, with the increase of the thickness of the sludge, more and more toxic and harmful substances in the sludge layer can be deposited at the bottom of the river bed for a long time, and can ferment, blacken and smell, so that the water quality of the percolating water is directly influenced, and therefore, the natural river bed serving as a water taking filter bed needs to be subjected to dredging treatment.

Firstly, manual excavation, water gun impact or slurry pump pumping are utilized, but the labor intensity is high, and the working efficiency is too low; secondly, the underwater operation of the dredging boat is utilized, so that not only are silt materials pumped, but also sand and pebbles which are the most important filtering medium in the seepage water taking are pumped, the structure of the water taking filter bed is directly damaged, and the water taking quality is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, the utility model aims at providing a river, lake bed top layer desilting system, its silt that can high-efficiently clear away pond bottom, river bed sand cobble top layer.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a river and lake bed surface layer dredging system comprises a ship body, a dredging device which moves along with the ship body and can go deep into the water bottom, and a power supply device for supplying power to the dredging device, wherein the dredging device is connected with a drain pipe;

the dredging device comprises at least one stirring mechanism and at least one sewage suction pump;

the stirring mechanism is used for stirring the silt at the water bottom to separate the silt from the water bottom so as to form silt slurry in the water;

the inlet of the sewage suction pump or the inlet of the sludge pipe communicated with the inlet of the sewage suction pump can be deep into the sludge slurry, the outlet of the sewage suction pump is communicated with the sewage discharge pipe, and the sludge slurry in the water is pumped by the sewage suction pump and is discharged through the sewage discharge pipe;

also has one or a combination of the following structures:

the structure I is as follows: the stirring mechanism comprises a stirring piece and a waterproof stirring motor which drives the stirring piece to rotate and is electrically connected with the power supply device; the stirring piece, the stirring piece and the sewage suction inlet can follow up along with the fluctuation of the topography of the water bottom;

the structure II is as follows: the stirring mechanisms are multiple in number, and the stirring pieces of the multiple stirring mechanisms are arranged in an array manner; the number of the sewage suction pumps is one or more, and when the number of the sewage suction pumps is more, the sludge inlets communicated with each sewage suction pump are arranged in an array manner.

In the technical scheme, when sludge is cleared, the stirring mechanism stirs a sludge layer at the bottom of the water to separate the sludge from the bottom of the water to form sludge slurry in the water, and the sludge slurry in the water is pumped by the sewage suction pump and is conveyed out through the sewage discharge pipe; the sludge is absorbed while stirring, and the dredging effect is good.

In the first structure, the dredging device can adapt to different terrain conditions of the height fluctuation of the underwater terrain; the dredging device can clear the obstacles on the water bottom or the sludge at the pit. In the second structure, a plurality of stirring mechanisms and at least one sewage suction pump are arranged for dredging together, so that the dredging efficiency is high, the dredging effect is good, and the dredging is comprehensive.

In a preferred embodiment of the utility model, the device further comprises a distance sensor for detecting the distance between the stirring piece and the water bottom, and a lifting mechanism for adjusting the height of the stirring piece and/or the sludge inlet according to the output of the distance sensor; or the waterproof stirring motor is directly or indirectly connected with the ship body through the elastic piece.

The stirring piece and the sewage suction inlet can adjust the height along with the height of the underwater topography by arranging the distance sensor and the lifting mechanism, so that the underwater topography is adapted to the height of the underwater topography; through the deformation of elastic component, change the position of the stirring piece of being connected with waterproof agitator motor to adapt to the height fluctuation of submarine topography.

In a preferred embodiment of the present invention, the elevating mechanism comprises a telescopic rod directly or indirectly connecting the sewage suction pump/waterproof stirring motor to the hull; or the lifting mechanism comprises a steel wire rope, one end of the steel wire rope is connected with the sewage suction pump, and the other end of the steel wire rope is wound on the output shaft of the winding motor after the steel wire rope rounds a pulley fixedly connected with the bottom of the ship body.

The different structures of the lifting mechanism, the telescopic rods or the steel wire ropes can adjust the height of the stirring piece and/or the sludge inlet, so that the underwater sludge stirring device is suitable for the height fluctuation of underwater topography.

The utility model discloses an in the preferred embodiment, rabbling mechanism and soil pick-up pump one-to-one set up, the mud entry is close to the setting of stirring piece. The stirring piece stirs silt, and the soil pick-up pump is siphoned away silt mud from the mud entry, and the soil pick-up is efficient.

In a preferred embodiment of the present invention, the sludge inlet is provided with a dirt-absorbing cover, and the stirring member is located outside the dirt-absorbing cover. After the sewage suction cover is arranged, the sewage suction range of the sewage suction pump can be enlarged, and the dredging efficiency is improved; when the dredging system is used for cleaning silt on a sand and pebble layer of a river bed, all or part of the stirring piece is positioned outside the sewage suction cover, so that the sand and pebbles are sucked away as little as possible when the sewage suction pump sucks away silt slurry.

In a preferred embodiment of the present invention, the system further comprises a solid adsorbent isolation design, wherein the isolation design adopts one of the following structures:

the structure I is as follows: the front end of the sewage suction pump inlet is provided with a filtering piece;

the structure II is as follows: the stirring piece is separated from the sewage suction inlet in space, and the stirring piece is positioned below the sewage suction inlet for a certain distance.

When the dredging system is used for cleaning silt on a sand and gravel layer of a river bed, in the first structure, the filter element is used for filtering sand and gravel to prevent a sewage suction pump from sucking away the sand and gravel in the river bed; in the second structure, the stirring piece is positioned below the sludge suction inlet, so that sand and pebbles are sucked away as little as possible when the sludge pump sucks away sludge slurry.

In another preferred embodiment of the present invention, a cleaning brush is disposed on the stirring member. The waterproof stirring motor rotates the cleaning brush to separate sludge from water bottom and form sludge slurry in water.

In another preferred embodiment of the present invention, the stirring member is detachably connected to the waterproof stirring motor, and the brush bristles or the brush teeth of the cleaning brush have a certain strength. Whether the cleaning brush of different intensity is changed to the knot silt from this can be based on submarine silt, when needs clearance knot silt, changes for the brush hair or the high cleaning brush of brush tooth intensity, makes the cleaning brush also clear away the knot silt.

In another preferred embodiment of the present invention, the number of the stirring mechanisms is plural, and the stirring member of the latter stirring mechanism and the stirring member of the former stirring mechanism are arranged in a staggered manner; and/or the sewage suction pump is positioned in water, the number of the sewage suction pumps is multiple, and the sludge inlet communicated with the rear sewage suction pump and the sludge inlet communicated with the front sewage suction pump are arranged in a staggered manner. Therefore, in the advancing process of the ship body, the silt can be removed in an all-around manner, the silt removing effect is good, and the efficiency is high.

In another preferred embodiment of the utility model, one end of the sewage discharge pipe is communicated with the outlet of the sewage suction pump, and the other end is fixed on the float bowl and floats on the water surface together with the float bowl. After the buoy is arranged, the load of the ship body on the sewage discharge pipe can be reduced.

The utility model has the advantages as follows:

1) the utility model discloses can wide application in the top layer desilting of riverbed and lake bed, the desilting area is big, and the desilting is effectual, is the high-efficient ecological remediation system of riverbed and lake bed.

2) The utility model discloses a different topography condition of adaptable submarine topography height fluctuation of desilting device can clear away the silt of submarine barrier or pit department.

3) The utility model discloses a be equipped with the cleaning brush on the stirring piece, the brush hair or the brush tooth of cleaning brush have certain intensity, compare the direct mode of inhaling the silt of traditional adoption pump, the utility model discloses a cleaning surface is bigger, the desilting effect is better.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a dredging system according to the first embodiment.

Fig. 2 is a schematic view showing an arrangement of the soil pick-up cover of fig. 1.

Fig. 3 is a schematic structural diagram of the dredging system of the second embodiment.

FIG. 4 is a schematic view of an array of agitating members and dirt pick-up cap of FIG. 3.

FIG. 5 is a schematic view of an alternative array of agitating members and dirt pick-up cap of FIG. 3.

Fig. 6 is a schematic view one of the structure of the stirring mechanism in the dredging system of the third embodiment.

Fig. 7 is a schematic diagram two of a structure of an agitating mechanism in the dredging system of the third embodiment.

Reference numerals in the drawings of the specification include: the device comprises a ship body 1, a generator 2, a sewage discharge pipe 3, a buoy 31, a sewage suction pump 41, a sludge inlet 42, a sewage suction pipe 43, a sewage suction cover 44, a first connecting piece 45, a second connecting piece 46, a waterproof stirring motor 51, a stirring piece 52, a third connecting piece 53, a rigid rod 541, an elastic piece 542, a sludge layer a and a sand-gravel layer b.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

Example one

The utility model provides a dredging system for the surface layer of river and lake bed, which is used in the places such as river bed and lake bed (the lake can be large or small), etc. needing to remove the silt, as shown in figure 1, in a preferred embodiment of the utility model, the dredging system comprises a ship body 1, a dredging device which moves along with the ship body 1 and can go deep into the water bottom, and a power supply device for supplying power to the dredging device, wherein the dredging device is connected with a blow-off pipe 3; the dredging device comprises at least one stirring mechanism and at least one sewage suction pump 41, the inlet of the sewage suction pump 41 or the inlet of a sludge pipe communicated with the sewage suction pump 41 can be deeply inserted into the sludge slurry, and the outlet of the sewage suction pump 41 is communicated with the sewage discharge pipe 3.

The ship body 1 is a carrier for installing other equipment, so that the bearing capacity of the ship body 1 is larger than the sum of other equipment for ensuring the safety of the operation of the equipment. In the present embodiment, as shown in fig. 1, the power supply device includes a generator 2 mounted on the hull 1, the generator 2 is a diesel generator, and the diesel generator supplies power to the stirring mechanism and the sewage suction pump 41, so that the power of the diesel generator is greater than the sum of the power required by the stirring mechanism and the sewage suction pump 41; when the power generator is used for removing sludge in a pond, the area of the pond is small, the power generator 2 can be arranged on the shore, and the load of the ship body 1 is reduced.

When the sludge is cleared, the stirring mechanism stirs the sludge layer a at the water bottom to make the sludge separate from the water bottom to form sludge slurry in water, for example, the sludge in the river bed is separated from the surface of a river bed sand pebble layer b; the sewage suction pump 41 pumps sludge slurry in water and conveys harmful substances such as sludge to the downstream through the sewage discharge pipe 3, so that construction links such as constructing a sedimentation tank on the bank are avoided, the cost of dredging the filter bed is reduced, and the purposes of no secondary transfer and no secondary pollution are realized.

In practice, the sewage suction pump 41 may be provided in the water as shown in fig. 1, but may of course be provided on the hull 1; when the sewage suction pump 41 is arranged on the ship body 1, the communicated sludge pipe inlet can be extended into the sludge slurry; when the sewage suction pump 41 is installed in water, the inlet of the sewage suction pump 41 can directly go deep into the sludge slurry or pass through a sludge pipe and extract the sludge slurry.

The dredging system also has one of the following structures or the combination of the following structures:

the structure I is as follows: as shown in fig. 1, the stirring mechanism comprises a stirring piece 52 and a waterproof stirring motor 51 which drives the stirring piece 52 to rotate and is electrically connected with a power supply device, wherein the stirring piece 52 and the sewage suction inlet can follow up along with the fluctuation of the water bottom topography; thereby adapting to different topographical conditions of the river or lake bed bottom and allowing the stirring members 52 to interact with the surface layer of the river bed at all times.

The structure II is as follows: as shown in fig. 1, the number of the stirring mechanisms is multiple, the number of the sewage suction pumps 41 is multiple, the stirring mechanisms and the sewage suction pumps 41 are arranged in a one-to-one correspondence manner, and the sludge inlet 42 is arranged close to the stirring piece 52; of course, only one sewage suction pump 4 may be provided, at this time, the inlet of the sewage suction pump is communicated with the plurality of sewage suction pipes 43, and the sewage suction inlets 42 of the plurality of sewage suction pipes 43 are arranged in one-to-one correspondence with the stirring mechanism.

Fig. 1 shows a combination of the first structure and the second structure, in a preferred embodiment of the present invention, a sludge inlet 42 is provided with a dirt-absorbing cover 44, an opening of the dirt-absorbing cover 44 is disposed downward, and all or part of the stirring member 52 is located outside the dirt-absorbing cover 44; the agitator 52 shown in FIG. 1 is located partially within the dirt cup 44 and partially outside the dirt cup 44. The waterproof stirring motor 51 is installed in the sewage suction cover 44 through a bracket (not shown in the figure), the inlet of the sewage suction pump 41 is communicated with the inside of the sewage suction cover 44 through a sewage suction pipe 43, and the outlet of each sewage suction pump 41 is communicated with the sewage discharge pipe 3 through a pipeline (not shown in the figure).

As shown in fig. 2, the plurality of dirt absorbing covers 44 are arranged in an array structure, the rear dirt absorbing cover 44 is arranged in a staggered manner with respect to the front dirt absorbing cover 44, that is, the stirring member 52 of the rear stirring mechanism is arranged in a staggered manner with respect to the stirring member 52 of the front stirring mechanism, and the sludge inlet 42 communicated with the rear dirt absorbing pump 41 is arranged in a staggered manner with respect to the sludge inlet 42 communicated with the front dirt absorbing pump 41. Therefore, the sludge can be removed in all directions during the advancing process of the ship body 1.

The utility model discloses an in another preferred embodiment, this desilting system still includes solid adsorbate isolation design, and isolation design adopts one of following structure:

the structure I is as follows: the inlet of the sewage suction pump 41 is provided with a filter member (not shown), for example, a filter member is arranged in the sewage suction cover 44 shown in fig. 1, for filtering sand and pebbles, so as to prevent the sewage suction pump from sucking sand and pebbles in the river bed.

The structure II is as follows: the stirring member 52 is spatially separated from the sewage suction inlet 42, and the stirring member 52 is located below the sewage suction inlet 42 by a certain distance, for example, the lower end of the stirring member 52 shown in fig. 1 is located below the lower end of the sewage suction cover 44, so that the sewage suction pump 41 sucks away sand and pebbles in the river bed as little as possible while sucking away the sludge slurry.

In another preferred embodiment of the present invention, the dredging system further comprises a distance sensor for detecting the distance between the stirring member 52 and the water bottom, and a lifting mechanism for adjusting the height of the stirring member 52 and/or the sludge inlet 42 according to the output of the distance sensor. Specifically, as shown in fig. 1, the lifting mechanism includes a first connecting member 45 connecting the sewage suction pump 41 with the hull 1, for example, the first connecting member 45 is a telescopic rod fixedly connected with the bottom of the hull 1, and the driving mode of the telescopic rod may be electric or hydraulic; the telescopic rod is connected with the control output end of the controller, and the output end of the distance sensor is connected with the controller. The distance sensor can be an Anbray West lake underwater obstacle avoidance sensor, the distance sensor outputs signals to the controller, and the controller controls the telescopic rod to extend or shorten, so that the heights of the stirring piece 52 and the sludge inlet 42 are adjusted simultaneously. The specific height adjusting method may refer to the height adjusting method disclosed in CN208749523U, and other methods for adjusting the extension or contraction of the telescopic rod according to the distance in the prior art may also be adopted.

Of course, the first connecting member 45 may also be a steel wire rope, one end of the steel wire rope is fixedly connected to the sewage suction pump 41, after the steel wire rope is wound around the pulley fixedly connected to the bottom of the hull 1, the other end of the steel wire rope is wound around the output shaft of the winding motor, and the winding motor is connected to the control output end of the controller. At this time, the winding motor loosens or winds the wire rope according to the distance detected by the distance sensor, thereby adjusting the height of the stirring member 52 and/or the sludge inlet 42.

As shown in fig. 1, in another preferred embodiment of the present invention, a cleaning brush is disposed on the stirring member 52, the output shaft of the waterproof stirring motor 51 shown in fig. 1 is disposed horizontally, and the bristles of the cleaning brush are disposed along the outer circumference of the stirring rod and vertically rotate with the output shaft of the waterproof stirring motor 51 to separate the sludge from the surface layer of the river bed; of course, the output shaft of the waterproof agitator motor 51 can also be vertically arranged, and the bristles of the cleaning brush are transversely arranged and horizontally rotate along with the output shaft of the waterproof agitator motor 51. Of course, the output shaft of the waterproof stirring motor 51 may be fixedly connected to a stirring blade, and the stirring blade rotates to stir the sludge into sludge slurry.

In another preferred embodiment of the present invention, the stirring member 52 is detachably connected to the waterproof stirring motor 51, and the brush bristles or brush teeth of the cleaning brush have a certain strength; for example, the bristles of the cleaning brush are flexible bristles made of silicone, plastic, or the like; or hard bristles made of metal; or the bristles are intermediate between flexible and rigid (e.g., metal bristles having an elastic ability to flex back); or a combination of flexible and rigid materials (e.g., some bristles are flexible and some bristles are rigid; or one bristle is flexible and the other bristle is rigid); alternatively or in addition to the cleaning brush, hard brush teeth, such as the scraping saw tooth structure disclosed in CN207260220U, may be provided. Whether the cleaning brush of different intensity is changed to the knot silt from this can be based on submarine silt, when needs clearance knot silt, changes for the brush hair or the high cleaning brush of brush tooth intensity, makes the cleaning brush also clear away the knot silt.

As shown in fig. 1, in another preferred embodiment of the present invention, one end of the sewage pipe 3 is connected to the outlet of the sewage suction pump 41 through a plurality of pipes, and the other end of the sewage pipe 3 is fixed to the float 31 and floats on the water surface together with the float 31. The outlet of the end of the sewage discharge pipe 3 fixed on the float bowl 31 is used as a sewage discharge outlet of the device, the sewage suction pump 41 pumps the sludge slurry in the water and conveys the sludge slurry to the downstream through the sewage discharge outlet, the original state and permeability of the filter bed are recovered, and the dredging operation to the whole river bed is completed from the upstream to the downstream in sequence. Certainly, in the actual dredging process, the staff can monitor the sludge discharged from the sewage discharge outlet, and when the solid-liquid ratio of the discharged sludge is higher, the staff can control the ship body 1 to continuously circulate to treat the sludge layer a in the area; when the solid-liquid ratio of the sludge slurry discharged from the sewage discharge outlet is lower, the staff can control the ship body 1 to move downstream to carry out dredging work on a downstream riverbed, and the efficiency and the quality of the dredging project are improved.

Example two

The difference between the present embodiment and the first embodiment is: the mixing mechanism and the dirt absorption cover 44 are arranged at different positions and in different arrangement modes, specifically, as shown in fig. 3, in this embodiment, the mixing mechanism is arranged outside the dirt absorption cover 44, the waterproof mixing motor 51 is connected with the ship body 1 through a third connecting piece 53, the dirt absorption pump 41 is connected with the ship body 1 through a second connecting piece 46, and preferably, the opening of the dirt absorption cover 44 is arranged obliquely downwards along the advancing direction of the ship body 1. The second connecting member 46 and the third connecting member 53 can also be telescopic rods or wire ropes in the first embodiment. The second and third connecting

members

46 and 53 adjust the height of the stirring member 52 and/or the sludge inlet 42 according to the distance output from the distance sensor.

As can be seen from fig. 4 and 5, the stirring members 52 of the plurality of stirring mechanisms are arranged in an array, and the sludge inlets 42 communicated with each of the sewage suction pumps 41 are also arranged in an array. Specifically, as shown in fig. 4, the stirring members 52 and the dirt suction covers 44 are provided in the same number and in one-to-one correspondence, and the stirring members 52 are located at the front end (i.e., the right end in fig. 4) of the dirt suction cover 44; as also shown in FIG. 5, the number of the stirring members 52 is different from that of the dirt suction cup 44, and the stirring members 52 may be disposed around the dirt suction cup 44. In fig. 4 and 5, the stirrer 52 and the dirt suction cover 44 are preferably arranged in such a manner that the rear dirt suction cover 44 is offset from the front dirt suction cover 44.

EXAMPLE III

The present embodiment is different from the first and second embodiments in that: the embodiment of the stirring member 52 following up the water bottom topography is different, specifically referring to fig. 6 and 7, in this embodiment, an elastic member 542 is connected to the upper end of the waterproof stirring motor 51, a rigid rod 541 fixedly connected to the bottom of the ship body 1 is connected to the upper end of the elastic member 542, and each waterproof stirring motor 51 is indirectly connected to the ship body 1 through the elastic member 542 and follows up the water bottom topography. The elastic member 542 may be a flexible elastic rod as shown in fig. 7, or may be a spring; of course, the elastic member 542 may be made longer, and the waterproof agitating motor 51 is directly connected to the hull 1 through the elastic member 542.

When the topography fluctuation is little at the bottom of the pool etc. and need not to adjust the height of soil pick-up entry, can adopt the desilting system of this embodiment.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A river and lake bed surface layer dredging system comprises a ship body, a dredging device which moves along with the ship body and can go deep into the water bottom, and a power supply device for supplying power to the dredging device, wherein the dredging device is connected with a drain pipe; it is characterized in that the preparation method is characterized in that,

the stirring mechanism is used for stirring the sludge at the water bottom to separate the sludge from the water bottom so as to form sludge slurry in the water;

also has one or a combination of the following structures:

2. The surface dredging system for river and lake beds as claimed in claim 1, wherein the stirring member further comprises a distance sensor for detecting the distance between the stirring member and the water bottom, and a lifting mechanism for adjusting the height of the stirring member and/or the sludge inlet according to the output of the distance sensor;

or the waterproof stirring motor is directly or indirectly connected with the ship body through an elastic piece.

3. The system for removing sludge on the surface of river or lake bed as claimed in claim 2, wherein the lifting mechanism comprises a telescopic rod for directly or indirectly connecting the sewage suction pump/waterproof stirring motor with the hull;

or the lifting mechanism comprises a steel wire rope, one end of the steel wire rope is connected with the sewage suction pump, and the other end of the steel wire rope is wound on an output shaft of the winding motor after the steel wire rope rounds a pulley fixedly connected with the bottom of the ship body.

4. The system for removing sludge on the surface of a river or lake bed as claimed in claim 1, wherein the stirring mechanisms are arranged in one-to-one correspondence with sewage suction pumps, and the sludge inlet is arranged close to the stirring member.

5. The system for removing sludge on the surface of a river or lake bed as claimed in claim 4, wherein a sludge suction cover is arranged at the sludge inlet, and all or part of the stirring member is positioned outside the sludge suction cover.

6. The surface dredging system for river and lake beds as claimed in claim 4, further comprising a solid adsorbate insulation design, wherein the insulation design adopts one of the following structures:

the structure I is as follows: a filter element is arranged at the front end of the sewage suction pump inlet;

the structure II is as follows: the stirring piece is spatially separated from the sewage suction inlet, and the stirring piece is positioned below the sewage suction inlet for a certain distance.

7. The system for dredging the surface of the river or lake bed as claimed in claim 1, wherein the stirring member is provided with a cleaning brush.

8. The river or lake bed surface dredging system of claim 7, wherein the stirring member is detachably connected to a waterproof stirring motor, and the brush bristles or the brush teeth of the cleaning brush have certain strength.

9. The river or lake bed surface dredging system of any one of claims 1-8, wherein the number of the stirring mechanisms is plural, and the stirring member of the latter stirring mechanism is arranged in a staggered manner with respect to the stirring member of the former stirring mechanism; and/or the sewage suction pump is positioned in water, the number of the sewage suction pumps is multiple, and a sludge inlet communicated with a rear sewage suction pump and a sludge inlet communicated with a front sewage suction pump are arranged in a staggered manner.

10. A river or lake bed surface dredging system as claimed in any one of claims 1-8, wherein one end of the sewage draining pipe is connected to the outlet of the sewage suction pump, and the other end is fixed to the float bowl and floats on the water surface together with the float bowl.