Dredging and silt removal equipment

Abstract

The present invention discloses a dredging and desilting device, comprising: a dredging pipe comprising a first portion and a second portion in a sealed, rotatably connected manner; a drill bit connected to the second portion and provided with a plurality of first dredging holes; a plurality of dredging pipes, each of which is connected to the second portion and has an open end, each of which is provided with a plurality of second dredging holes; a first sleeve coaxially rotatably sleeved on the first portion; and a plurality of first connecting rods, one for each dredging pipe, one end of each first connecting rod being hinged to the first sleeve and the other end being hinged to the other end of the corresponding dredging pipe. While increasing the dredging range, the present invention ensures efficient, long-term, and normal dredging operation of the dredging pipe and pump body, providing a double guarantee that greatly improves the efficiency of clearing river dredging.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy engineering equipment, and more particularly to a dredging and desilting device. Background Art

[0002] In order to protect the water storage and ecological capacity of rivers or lakes and ensure the safety of water conservancy projects, it is necessary to regularly use dredging and desilting equipment to suck out and clean the silt in the river channel. The existing dredging and desilting equipment often has the problem that the suction pipes are easily blocked by silt with high viscosity. When the blockage is serious, the dredging and desilting equipment will not work normally, affecting the dredging work efficiency. In addition, hard debris such as stones in the river channel will enter the suction pipe together with the silt, causing damage to the suction pump and affecting the service life of the dredging and desilting equipment. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] In order to achieve these purposes and other advantages according to the present invention, there is provided a dredging and desilting device comprising:

[0005] The mud pumping pipe is vertically arranged and comprises a first portion and a second portion which are sealed and rotatably connected, wherein the top of the first portion is connected to the mud pump; and a first spiral groove is provided on the first portion along its axial direction;

[0006] A drill bit having a downward-pointing, hollow conical structure, the drill bit being coaxially arranged with the mud suction pipe and being connected to the bottom of the second portion; a plurality of strip-shaped first mud suction holes extending along a generatrix are provided on the circumferential surface of the drill bit;

[0007] a plurality of mud guide tubes arranged at intervals along the circumferential direction on the outside of the second part, one end of each mud guide tube being connected to the second part via a connector and the other end being open, and a plurality of strip-shaped second mud suction holes extending along the axial direction of the mud guide tube being provided on the circumferential side surface thereof;

[0008] a first sleeve coaxially rotatably sleeved on the first portion, wherein the inner wall of the first sleeve is provided with a first thread adapted to the first spiral groove;

[0009] A plurality of first connecting rods are provided, one first connecting rod being corresponding to one mud guide tube, one end of each first connecting rod being hinged to the first sleeve, and the other end being hinged to the other end of the corresponding mud guide tube.

[0010] Preferably, in the dredging and desilting device, each connecting member includes a horizontally arranged connecting pipe and a corrugated pipe, one end of the connecting pipe is connected to the second part, and the other end is connected to one end of the corrugated pipe; the other end of the corrugated pipe is connected to one end of the corresponding mud guide pipe.

[0011] Preferably, the dredging and desilting device further includes a plurality of telescopic rods, one telescopic rod being provided for each connecting pipe, the upper end of each telescopic rod being connected to the bottom of the first sleeve, and the lower end extending vertically downward and connected to the top of the corresponding connecting pipe.

[0012] Preferably, the dredging and desilting device further includes a rotating shaft, which is coaxially arranged inside the first part, the upper end of the rotating shaft is rotatably connected to the inner wall of the first part, and the lower end is connected to the drill bit; a plurality of first stirring groups are arranged on the rotating shaft at intervals in the vertical direction, each first stirring group includes a plurality of first stirring blades arranged in a circumferential direction, and each first stirring blade is provided with a plurality of first blades.

[0013] Preferably, in the dredging and desilting device, each mud guide pipe is provided with a dredging mechanism, and each dredging mechanism comprises:

[0014] A central shaft is coaxially disposed in the corresponding mud guide tube, and a second spiral groove is provided on the central shaft extending along its axial direction;

[0015] A plurality of second sleeves are rotatably sleeved on the central shaft at intervals along the axial direction of the central shaft, the inner wall of each second sleeve being provided with a second thread adapted to the second spiral groove, and both ends of the second sleeve being connected to the inner wall of the mud guide tube via elastic members, each elastic member being provided along the axial direction of the mud guide tube;

[0016] A plurality of second stirring groups are provided, and each second sleeve is provided with a corresponding second stirring group. Each second stirring group includes a plurality of second stirring blades arranged along the circumference of the second sleeve, and each second stirring blade is provided with a plurality of second blades.

[0017] Preferably, in the dredging and desilting device, each elastic member is a spring arranged along the axial direction of the mud guide tube, and the free end of each spring is connected to the inner wall of the mud guide tube through a second connecting rod.

[0018] Preferably, in the dredging and desilting device, a plurality of third blades are provided on the circumferential side surface of the drill bit.

[0019] Preferably, in the dredging and desilting device, the top of the rotating shaft is connected to the inner wall of the first part through a plurality of horizontally arranged third connecting rods.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. The dredging and desilting device of the present invention can stir the silt to a large extent while sucking it, breaking up the agglomerated silt and preventing the agglomerated silt from clogging the pipe. The device is provided with multi-directional and multi-positioned silt suction holes to expand the silt suction range and filter the silt, preventing hard debris such as stones from entering the pipe and causing damage to the pipe and pump body, thereby ensuring the normal operation of the pipe and pump body and extending the service life of the device. That is, the present invention not only increases the silt suction range, but also ensures the efficient and long-term normal suction operation of the silt suction pipe and pump body, thereby greatly improving the efficiency of river silt cleaning.

[0022] 2. The present invention is provided with a rotating shaft, a plurality of first stirring blades, and a plurality of first blades, which can stir the sludge in the sludge extraction pipe, thereby preventing the sludge that enters the sludge extraction pipe from clogging the pipe and further improving the dredging efficiency. Specifically, the rotating shaft is connected to the drill bit, and the rotation of the drill bit causes the rotating shaft to rotate relative to the first part. The rotation of the rotating shaft drives the plurality of first stirring blades and the plurality of first blades to cut and stir the sludge in the first part and the second part.

[0023] 3. The present invention provides a dredging mechanism in each mud guide pipe, which can dredge the mud guide pipe in real time during the suction operation, ensuring the smoothness of mud suction through the mud guide pipe, thereby achieving the purpose of improving dredging efficiency.

[0024] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a dredging and desilting device according to one technical solution of the present invention;

[0026] Figure 2 A schematic structural diagram of a mud guide pipe in another technical solution of the present invention;

[0027] Figure 3 for Figure 2 A partial enlarged view of middle A.

[0028] Explanation of the accompanying drawings: 1-mud pump; 11-mud storage tank; 21-first part; 22-second part; 3-drill bit; 4-mud guide pipe; 41-connecting pipe; 42-bellows; 5-first sleeve; 51-telescopic rod; 6-first connecting rod; 7-rotating shaft; 71-third connecting rod; 72-first stirring blade; 81-center shaft; 82-second sleeve; 83-second stirring member; 84-spring; 85-second connecting rod. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0030] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0031] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified.

[0032] In the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] like Figures 1 to 3 As shown, the present invention provides a dredging and desilting device, which includes:

[0034] The mud pumping pipe is vertically arranged and includes a first portion 21 and a second portion 22 that are sealed and rotatably connected. The top of the first portion 21 is connected to the mud pump 1, and a first spiral groove is provided on the circumferential side of the first portion 21 along its axial direction. The outlet of the mud pump 1 is connected to the mud storage tank 11. The first and second portions are both hollow, circular tubes made of hard material.

[0035] The drill bit 3 is a hollow conical structure with its apex facing downward. The drill bit 3 is coaxially arranged with the second portion 22 of the mud extraction pipe and is connected to the bottom of the second portion 22. The drill bit 3 and the second portion 22 are driven by a power mechanism to rotate synchronously forward and reverse. The circumferential surface of the drill bit 3 is provided with a plurality of strip-shaped first mud suction holes extending along the generatrix. The hollow interior of the drill bit is connected to the interior of the second portion 22.

[0036] Multiple mud guide tubes 4 are circumferentially spaced apart and arranged outside the second portion 22. One end of each mud guide tube 4 is rotatably connected and sealed to the second portion 22 via a connector, while the other end is open. A plurality of strip-shaped second mud suction holes extending axially are provided on the circumferential side surface of the mud guide tube 4. The rotational connection between the mud guide tube and the second portion 22 can be understood as a hinged connection. Under the linkage action of the first sleeve, the angle between the mud guide tube and the second portion 22 changes.

[0037] A first sleeve 5 is coaxially rotatably sleeved on the first portion, and an inner wall of the first sleeve 5 is provided with a first thread adapted to the first spiral groove;

[0038] A plurality of first connecting rods 6 are provided, one first connecting rod 6 being corresponding to one mud guide tube 4 , one end of each first connecting rod 6 being hinged to the first sleeve 5 , and the other end being hinged to the other end of the corresponding mud guide tube 4 .

[0039] In the above technical solution, the present invention provides a dredging and desilting device, which includes a dredging pipe consisting of a first part and a second part, a drill bit provided at the lower end of the dredging pipe and used to drill into the silt layer of the river channel, a plurality of dredging pipes arranged around the periphery of the second part and connected to the second part, a first sleeve rotatably provided on the first part, and a plurality of first connecting rods connecting the free ends of the plurality of dredging pipes to the first sleeve. The first part and the second part can be sealed and rotatably connected by a sealed bearing. Under the limiting action of the dredging pump, the first part will not rotate circumferentially, while the second part can rotate circumferentially relative to the first part about its own axis.

[0040] The drill bit, with its apex facing downward, has a conical structure that allows it to penetrate river silt more quickly. The drill bit is hollow inside, and multiple first mud suction holes are arranged to create a hollowed-out structure on the circumference of the drill bit. This allows the drill bit to function not only as a mud drilling component but also as a mud suction head. As the drill bit rotates and drills, it stirs and breaks up the river silt. Under the action of the mud pump, the river silt is filtered through the multiple first mud suction holes and enters the mud suction pipe.

[0041] Under the cooperation of the first spiral groove and the first thread, the first sleeve can rotate up and down relative to the first part, and the multiple mud guide tubes are connected to the first sleeve through the multiple first connecting rods, so that the up and down rotation of the first sleeve can drive the multiple mud guide tubes to rotate circumferentially around the axis of the first part, thereby expanding the circumferential mud pumping range. During the rotation, the angle between the mud guide tube and the mud pumping tube changes, so that the mud pumping range of the mud guide tube along the radial direction of the mud pumping tube changes, thereby expanding the radial mud pumping range. The up and down rotation of the first sleeve drives the other end of the mud guide tube to change its axial position along the mud pumping tube. The axial mud pumping range is expanded, and multiple mud guides can suck the silt in the river channel in multiple directions and angles, greatly improving the silt suction efficiency. Specifically, the drill bit and the second part reciprocate in a forward and reverse manner under the action of the power mechanism, thereby driving the first sleeve to rotate upward and downward on the first part. The multiple mud guides are like a rotating, closing and opening umbrella, which can stir and disperse the silt in a large floating manner, making the silt finer and easier to be sucked away. At the same time, the silt suction range is greatly expanded, thereby achieving the beneficial effect of improving the silt cleaning efficiency.

[0042] When the dredging and desilting device provided by the present invention is used to clean the silt in the river channel, the dredging and desilting device is connected to the hull, and the silt storage tank and the silt pump are arranged on the hull. Preferably, the first part can be provided with a tube body with adjustable length and telescopic function, so as to facilitate the adjustment of the overall length of the silt pumping tube and then the lowering depth of the drill bit. The drill bit is lowered to the silt processing area so that the lower part of the drill bit is inserted into the silt at the bottom of the river channel, the silt pump is started, and the driving mechanism is started to rotate the drill bit (reciprocating forward and reverse), the drill bit stirs the silt, and the stirred and broken silt enters the interior of the drill bit through a plurality of first silt suction holes, and then enters the pumping In the mud pipe, during the mud pumping process, the rotation of the drill bit and the second part drives the connecting piece and multiple mud guide tubes to rotate, and then drives the first sleeve to rotate. Because the first spiral groove cooperates with the thread inside the first sleeve (spiral rotation connection), the first sleeve moves up and down while rotating, thereby driving multiple mud guide tubes to rotate open or rotate closed. The mud guide tube body stirs and breaks up the silt. The silt can enter the mud guide tube through the port at the other end of the mud guide tube and the second mud suction hole on the circumferential surface of the mud guide tube, and then moves to the second part. The silt in the second part moves upward to the first part under the action of the mud pump and is finally collected in the mud storage tank.

[0043] The dredging and desilting device of the present invention can stir the silt to a large extent while sucking the silt, break up the agglomerated silt, and prevent the agglomerated silt from clogging the pipeline. It is provided with sludge suction holes in multiple directions and positions to expand the sludge suction range, filter the silt, and prevent hard debris such as stones from entering the pipeline, causing damage to the pipeline and the pump body, ensure the normal operation of the pipeline and the pump body, and extend the service life of the device. That is, the present invention ensures the efficient and long-term normal suction operation of the sludge suction pipe and the pump body while increasing the sludge suction range, thereby greatly improving the efficiency of clearing river silt.

[0044] In another technical solution, in the dredging and desilting device, each connecting part includes a horizontally arranged connecting pipe 41 and a bellows 42, one end of the connecting pipe 41 is sealed and connected to the second part, and the other end is sealed and connected to one end of the bellows 42; the other end of the bellows 42 is sealed and connected to one end of the corresponding mud guide pipe 4.

[0045] In the above technical solution, the connecting part is composed of a hard horizontally arranged connecting pipe and a corrugated pipe with extension and rotation properties, so that the mud guide pipe and the second part are always kept in communication, and the mud guide pipe can also rotate relative to the second part (the angle between the mud guide pipe and the second part changes).

[0046] In another technical solution, the dredging and desilting device further includes multiple telescopic rods 51, with one telescopic rod 51 corresponding to each connecting tube 41. The upper end of each telescopic rod 51 is connected to the bottom of the first sleeve 5, and the lower end extends vertically downward and connects to the top of the corresponding connecting tube 41. Each connecting tube is connected to the first sleeve via a telescopic rod, which improves the smoothness of the upward and downward rotation of the first sleeve and the synchronous rotation of the multiple mud guide tubes and the second part.

[0047] In another technical solution, the dredging and desilting device further includes a rotating shaft 7, which is coaxially arranged inside the first part, the upper end of the rotating shaft 7 is rotatably connected to the inner wall of the upper part of the first part, and the lower end passes downward through the second part and is connected to the drill bit 3, and the rotating shaft 7 is driven to rotate synchronously by a power mechanism; a plurality of first stirring groups are arranged on the rotating shaft 7 at intervals in the vertical direction, each first stirring group includes a plurality of first stirring blades 72 arranged in a circumferential direction, and each first stirring blade 72 is provided with a plurality of first blades.

[0048] In the above technical solution, a rotating shaft, a plurality of first stirring blades, and a plurality of first blades are provided to stir the sludge in the sludge extraction pipe, thereby preventing the sludge that enters the sludge extraction pipe from clogging the pipe and further improving the dredging efficiency. Specifically, the rotating shaft is connected to the drill bit, and the rotation of the drill bit drives the rotating shaft to rotate relative to the first part. The rotation of the rotating shaft drives the plurality of first stirring blades and the plurality of first blades to cut and stir the sludge in the first part and the second part.

[0049] In another technical solution, the dredging and desilting device is provided with a dredging mechanism inside each mud guide pipe, and each dredging mechanism includes:

[0050] The central shaft 81 is coaxially disposed in the corresponding mud guide tube 4, and the central shaft 81 is provided with a second spiral groove extending along its axial direction;

[0051] A plurality of second sleeves 82 are rotatably sleeved on the central shaft 81 at intervals along the axial direction of the central shaft 82. The inner wall of each second sleeve 82 is provided with a second thread adapted to the second spiral groove. Both ends of the second sleeve 82 are rotatably connected to the inner wall of the mud guide tube 4 via elastic members, each elastic member being provided along the axial direction of the mud guide tube 4.

[0052] There are multiple second stirring groups, one second stirring group is correspondingly provided for each second sleeve 82 , each second stirring group includes multiple second stirring blades 83 arranged along the circumference of the second sleeve, and each second stirring blade 83 is provided with multiple second blades.

[0053] In the above technical solution, the present invention sets a dredging mechanism in each mud guide pipe, which can dredge the mud guide pipe in real time during the suction operation, ensuring the smoothness of mud pumping from the mud guide pipe, thereby achieving the purpose of improving dredging efficiency;

[0054] Specifically: a central axis is coaxially arranged inside each mud guide tube, and multiple second sleeves are rotatably sleeved on the central axis through a second spiral groove arranged on the central axis. During the circumferential rotation of the mud guide tube, the second sleeve moves axially along the central axis under the action of centrifugal force. While the second sleeve moves axially along the central axis, it can also rotate circumferentially relative to the central axis. The axial movement range of the second sleeve along the central axis is limited by an elastic member, and multiple second stirring groups are arranged in the circumferential direction of the second sleeve, so that when the second sleeve rotates, it drives multiple second stirring blades to rotate inside the mud guide tube, thereby realizing stirring of the sludge inside the mud guide tube. Multiple second blades are arranged on the second stirring blade to improve the stirring and cutting force of the sludge.

[0055] In another technical solution, the dredging and desilting device comprises a spring 84 arranged axially along the mud guide tube. The free end of each spring 84 is connected to the inner wall of the mud guide tube 4 via a second connecting rod 85. Each spring is sleeved outside the central axis, with one end connected to the second sleeve and the other end connected to the second connecting rod. A swivel is rotatably mounted on the central axis via a bearing. The second connecting rod has one end connected to the swivel and the other end rotatably connected to the inner wall of the mud guide tube in a circumferential direction. The provision of the second connecting rod limits the compression and elongation deformation of the spring to a certain length range. The second connecting rod is rotatably mounted within the mud guide tube via the swivel, allowing the second connecting rod to rotate circumferentially relative to the mud guide tube along with the second sleeve about the central axis. During rotation, the second connecting rod also stirs the mud within the mud guide tube, further improving the dredging effect of the mud guide tube and minimizing mud blockage within the mud guide tube.

[0056] In another technical solution, the dredging and desilting device is provided with a plurality of third blades on the circumferential side of the drill bit 3. The plurality of third blades on the drill bit allow the rotating drill bit to stir the silt while the third blades can cut and break up hard debris such as stones and mud clods around the drill bit, thereby improving desilting efficiency and preventing hard debris from entering the silt extraction pipe and clogging it. It also prevents hard debris from entering the silt extraction pump and damaging the pump body.

[0057] In another technical solution, the dredging and desilting device is described above, wherein the top of the rotating shaft 7 is connected to the inner wall of the first portion via a plurality of horizontally arranged third connecting rods 71. One end of the third connecting rod is connected to the rotating shaft, and the other end is circumferentially connected to the inner wall of the first portion, thereby achieving a rotational connection between the rotating shaft and the first portion. Simultaneously, the third connecting rod rotates with the rotating shaft relative to the first portion, stirring the silt in the first and second portions, further unclogging the pipeline.

[0058] The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the present invention will be readily apparent to those skilled in the art.

[0059] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Dredging and desilting device, characterized in that: include: The mud pumping pipe is vertically arranged and comprises a first portion and a second portion which are sealed and rotatably connected, wherein the top of the first portion is connected to the mud pump; and a first spiral groove is provided on the first portion along its axial direction; A drill bit having a downward-pointing, hollow conical structure, the drill bit being coaxially arranged with the mud suction pipe and being connected to the bottom of the second portion; a plurality of strip-shaped first mud suction holes extending along a generatrix are provided on the circumferential surface of the drill bit; A plurality of mud guide tubes are arranged at intervals along the circumferential direction outside the second part, one end of each mud guide tube is connected to the second part through a connector, and the other end is open, and a plurality of strip-shaped second mud suction holes extending along the axial direction are provided on the circumferential side surface of the mud guide tube; each connector includes a horizontally arranged connecting tube and a bellows, one end of the connecting tube is connected to the second part, and the other end is connected to one end of the bellows; the other end of the bellows is connected to one end of the corresponding mud guide tube; A first sleeve is coaxially rotatably sleeved on the first portion, the inner wall of the first sleeve being provided with a first thread adapted to fit the first spiral groove; a corresponding telescopic rod is provided for each connecting tube, the upper end of each telescopic rod being connected to the bottom of the first sleeve, and the lower end extending vertically downward and connected to the top of the corresponding connecting tube; A plurality of first connecting rods, one first connecting rod corresponding to each mud guide tube, one end of each first connecting rod being hinged to the first sleeve, and the other end being hinged to the other end of the corresponding mud guide tube; A rotating shaft is coaxially arranged inside the first part, the upper end of the rotating shaft is rotatably connected to the inner wall of the first part, and the lower end is connected to the drill bit; a plurality of first stirring groups are arranged on the rotating shaft at intervals in the vertical direction, each first stirring group includes a plurality of first stirring blades arranged in the circumferential direction, and each first stirring blade is provided with a plurality of first blades; a dredging mechanism is provided inside each mud guide tube, and each dredging mechanism includes: A central shaft is coaxially disposed in the corresponding mud guide tube, and a second spiral groove is provided on the central shaft extending along its axial direction; A plurality of second sleeves are rotatably sleeved on the central shaft at intervals along the axial direction of the central shaft, the inner wall of each second sleeve being provided with a second thread adapted to the second spiral groove, and both ends of the second sleeve being connected to the inner wall of the mud guide tube via elastic members, each elastic member being provided along the axial direction of the mud guide tube; A plurality of second stirring groups are provided, and each second sleeve is provided with a corresponding second stirring group. Each second stirring group includes a plurality of second stirring blades arranged along the circumference of the second sleeve, and each second stirring blade is provided with a plurality of second blades.

2. The dredging and desilting device according to claim 1, characterized in that: Each elastic member is a spring arranged along the axial direction of the mud guide tube, and the free end of each spring is connected to the inner wall of the mud guide tube through a second connecting rod.

3. The dredging and desilting device according to claim 1, characterized in that: A plurality of third blades are provided on the circumferential side surface of the drill bit.

4. The dredging and desilting device according to claim 1, characterized in that: The top of the rotating shaft is connected to the inner wall of the first part through a plurality of horizontally arranged third connecting rods.

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