CN115162260B - Continuous long-distance energy-saving dredging system and dredging method for water storage cave depot - Google Patents
Continuous long-distance energy-saving dredging system and dredging method for water storage cave depot Download PDFInfo
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- CN115162260B CN115162260B CN202210555093.9A CN202210555093A CN115162260B CN 115162260 B CN115162260 B CN 115162260B CN 202210555093 A CN202210555093 A CN 202210555093A CN 115162260 B CN115162260 B CN 115162260B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The application relates to the technical field of water conservancy, and discloses a continuous long-distance energy-saving dredging system of a water storage cave depot and a dredging method thereof, comprising a horizontal traction device and a plurality of dredging units which are arranged in the water storage cave depot and communicated through pipelines, wherein each dredging unit comprises a sand sedimentation tank and a plurality of dredging devices which are arranged on the pipelines and positioned in the sand sedimentation tank, each dredging device comprises a potential energy transmission part and a dredging part, each potential energy transmission part comprises a pressure pipe which is vertically arranged on the pipeline and communicated with the top of the pipeline and a piston positioned in the pressure pipe, one end of each supporting part is connected with each piston, and the other end of each supporting part is in butt joint with the bottom of the corresponding dredging part; the silt accumulation part comprises a sand container, the bottom of the sand container is abutted with the top of the supporting piece, and the side surface of the sand container is connected with the horizontal traction device; the dredging method can realize simultaneous dredging operation of a plurality of dredging units of the water storage cave depot, has high dredging efficiency, and uses pressure potential energy in nature as energy to realize small dredging energy consumption.
Description
Technical Field
The application relates to the technical field of water conservancy, in particular to a continuous long-distance energy-saving dredging system and a dredging method for a water storage cave depot.
Background
The water storage hole warehouse consists of underground cavern groups and matched inlet and outlet facilities, and can be divided into flood control type water storage hole warehouses, drainage type water storage hole warehouses, water supply type water storage hole warehouses and the like according to functions, and the water storage hole warehouses are always arranged in mountain rocks due to the requirements of engineering function operation, overall arrangement scheme and the like; the method is affected by site selection, the water body of the river basin where the engineering of part of the water storage cave depot is located has larger sand content, the height difference of the entrance section of the cave depot is smaller, the gradient of the main cave section of the cave depot along the course is slower, the water flow velocity of part of the cave section is slower during water storage, and the sand is extremely easy to deposit on the corresponding cave section; in order to ensure the normal operation of the cave depot and exert engineering benefits, dredging and sand removal are needed in time.
In the prior art, the dredging and sand discharging method for the water storage hole warehouse comprises the following steps: arranging a sand blocking ridge and a sand sedimentation tank at an inlet, arranging the sand sedimentation tank close to a blocking section of an outlet by using a water pump to pump and discharge the sand nearby, as disclosed in publication No. CN103938591B, and adopting a method for constructing a sand blocking submerged dam in a reservoir, the application divides the reservoir into two reservoir areas of clear water and muddy water, utilizes a sand conveying culvert to efficiently discharge sand-containing water flow far upstream of the dam into the reservoir, achieves the aim of water storage and sand discharge of the reservoir, and enlarges the dewatering scouring distance of the reservoir; fine-particle sediment which overflows from the sand-blocking submerged dam to a reservoir area in front of the dam is discharged outside the reservoir through a dam flood discharge hole in a dredging mode by utilizing a submerged pump reservoir; aiming at the wide and shallow and curved sedimentation form of the riverway in the reservoir area, a sand dredging mode of a submersible sand pump is utilized to shape a smooth river channel in the reservoir area which is favorable for different-gravity flow transportation, and the natural sand discharging effect of the reservoir is improved.
In the prior art, the dredging process of the water storage hole warehouse is generally to carry out deposition firstly and then extraction, wherein in the deposition process, a sand blocking dam and a sand sedimentation tank are arranged on a road section with more sediment in the water storage hole warehouse, the sand blocking dam and the sand sedimentation tank can deposit the sediment in the hole warehouse in the sand sedimentation tank, and then the sediment in the sand sedimentation tank is removed one by one through an external device; the following problems exist in the prior art by summarizing: firstly, the dredging device independently operates, when dredging a plurality of relatively low-lying and silt deposited hole sections along the water storage hole warehouse, the dredging device needs to be segmented one by one, the dredging efficiency is low, secondly, the existing dredging device mainly adopts external energy sources, and the energy consumption in the dredging process is high, so that the continuous long-distance energy-saving dredging system of the water storage hole warehouse is needed to solve the problems.
Disclosure of Invention
In order to solve the problems of low efficiency and high energy consumption of a dredging device of a water storage cave depot in the prior art, the application provides a continuous long-distance energy-saving dredging system of the water storage cave depot and a dredging method thereof.
The specific technical scheme of the application is as follows:
the continuous long-distance energy-saving dredging system for the water storage hole warehouse comprises a horizontal traction device and a plurality of dredging units which are arranged in the water storage hole warehouse and communicated through pipelines, wherein each dredging unit comprises a sand sedimentation tank and a plurality of dredging devices which are arranged in the sand sedimentation tank and are arranged on the pipelines, each dredging device comprises a potential energy transmission part and a dredging part, each potential energy transmission part comprises a pressure pipe which is vertically arranged on the pipeline and communicated with the top of the pipeline and a piston which is arranged in the pressure pipe, a supporting piece is arranged at the top of the pipeline, one end of each supporting piece is connected with the corresponding piston, and the other end of each supporting piece is in butt joint with the bottom of the corresponding dredging part; the silt accumulation part comprises a sand container, the bottom of the sand container is abutted to the top of the support piece, the side face of the sand container is connected with the horizontal traction device, a water inlet valve and a water outlet valve are arranged on the pipeline, the water inlet valve is positioned at the water inlet of the pipeline, and the water outlet valve is positioned at the water outlet of the pipeline.
The application provides a continuous long-distance energy-saving dredging system for a water storage cave depot, which can achieve the technical effects of high dredging efficiency and low energy consumption; the dredging system consists of a plurality of dredging units, the dredging device in the dredging units uses pressure potential energy in the nature as energy sources to carry out dredging operation, the dredging part is used for containing silted sediment, the potential energy transmission part is used for converting the pressure potential energy into kinetic energy, the potential energy transmission part ejects the silted sediment tank out of the sediment tank, and then the silted part ejected out of the sediment tank is pulled out of the sediment tank through the horizontal traction device, when the system is operated, the water inlet valve and the water outlet valve are simultaneously opened to fill water in a pipeline, the water outlet valve is closed after the pipeline is filled with water, the pressure pipe is communicated with the pipeline, and when the pipeline is filled with water in the pipeline, the lower surface of the piston can be subjected to upward pressure generated by water flow, when the gravity force generated by the piston, the support rod and the sand container for loading sediment is smaller than the pressure generated by water flow, the piston, the support piece and the sand container can move upwards under the action of water pressure, the process of ejecting the sand container out of the sand sedimentation tank can be completed, dredging operation can be completed by pulling the sand container out of the water storage hole warehouse through the horizontal traction device, dredging energy consumption is obviously reduced by taking pressure potential energy in the natural world as an energy source of dredging operation, if the reservoir water level is lower, the sand container cannot be ejected out of the sand sedimentation tank by the reservoir potential energy completely, at the moment, the water inlet valve is closed, the pipeline pressurizer is opened, the sand container is lifted to the bottom of a hole, the water level of a downstream river channel is lower than an outlet, water in the pipeline can be emptied, and the dredging device is reset to the bottom of the sand sedimentation tank.
Preferably, a stop block is arranged on the inner pipe wall at the top of the pressure pipe, the inner diameter of the pressure pipe is matched with the outer diameter of the piston, and the stop block is arranged to limit the moving stroke of the piston, so that the piston can only move in the pressure pipe.
Preferably, the support member comprises a support table abutting against the bottom of the sand container and a support rod for connecting the support table and the piston, the total height of the support rod and the piston is larger than the height of the pressure pipe, and the outer diameter of the support rod is smaller than the inner diameter of the pressure pipe.
Preferably, the top surface of the support piece is provided with a support rail (20) parallel to the central axis of the water storage hole warehouse, two ends of the support rail are provided with running rails (13) which are connected with the support rail and in the same direction, and the running rails are positioned on the inner bottom surface of the water storage hole warehouse; the sand container can transversely displace along the running track to prevent the sand container from turning over during transverse displacement, and the support track can limit the displacement of the sand container to prevent the silt accumulation part from horizontally moving and turning over during vertical movement.
Preferably, a sand groove (11) is sleeved on the outer side of the sand container, the bottom of the sand groove is communicated with the top of the pressure pipe, and the inner diameter of the sand groove is matched with the outer diameter of the sand container; the sand tank is used for limiting the displacement of the sand container, preventing the sand container from shaking and turning on one's side, setting the outer diameter of the sand container to be matched with the inner diameter of the sand tank, preventing deposited sediment from entering the pressure pipe through the gap between the sand tank and the sand container, preventing the piston from being displaced in the pressure pipe, reducing abrasion and increasing the durability of equipment.
Preferably, a traction buckle is arranged on the side surface of the sand container, and the traction buckle is detachably connected with the horizontal traction device; after the traction buckle is connected with the horizontal traction device, the horizontal traction device pulls the sand container out of the water storage hole warehouse through the traction buckle.
Preferably, a supercharger is arranged at the water inlet of the pipeline, and the supercharger is positioned at the water inlet of the pipeline; the booster is used for assisting in boosting the pipeline through the booster when the water pressure in the pressure pipeline is insufficient, so that the dredging operation is smoothly completed.
Preferably, the horizontal traction device comprises a power traction machine and a traction rope, wherein the power traction machine is positioned at the opening of the water storage hole warehouse, one end of the traction rope is connected with the power traction machine, and the other end of the traction rope is detachably connected with the sand container; the power tractor is arranged at the opening of the water storage hole warehouse, the traction rope is connected with the sand container, and the power tractor and the traction rope can pull out or pull in the sand container into the sand sedimentation tank to finish the effect of removing the deposited sediment out of the water storage hole warehouse.
A dredging method of a continuous long-distance energy-saving dredging system of a water storage cave depot comprises the following steps:
(1) Paving a pipeline and a dredging unit along a sediment accumulation section of a water storage cave depot, wherein a water inlet of the pipeline is communicated with a reservoir, a water outlet of the pipeline is communicated with a downstream river channel, and adjacent pressure pipelines are connected through pipelines;
(2) Starting dredging operation, firstly, simultaneously opening a water inlet valve and a water outlet valve to enable water in a reservoir to flow into a pipeline and a pressure pipeline, closing the water outlet valve after the pipeline and the pressure pipeline are full of water, and closing the water inlet valve after a sand container is ejected out of a sand sedimentation tank by a support piece;
(3) Connecting the ejected sand container in the step (2) with a horizontal traction device, starting the horizontal traction device to pull the sand container out of the water storage hole warehouse, and removing sediment in the sand container;
(4) And (3) pulling the cleaned sand container in the step (3) back to the support piece through the horizontal traction device, opening the water outlet valve, and returning the sand container to the sand settling tank to finish dredging operation.
The application also provides a dredging method of the continuous long-distance energy-saving dredging system of the water storage cave depot, the method can achieve the technical effects of high dredging efficiency and low dredging energy consumption, and when dredging operation is performed, a plurality of dredging units can simultaneously dredge the sand settling ponds along the water storage cave depot, the required dredging time is obviously reduced, the required dredging energy consumption is also obviously reduced, and the dredging efficiency is high and the dredging energy consumption is low.
Compared with the prior art, the application has the following technical effects:
(1) According to the application, the desilting unit is arranged in the desilting tank to perform desilting operation, and the desilting unit uses pressure potential energy in the nature as energy to perform desilting operation on the desilting tank, so that the desilting energy consumption is obviously lower than that in the prior art;
(2) The application connects a plurality of dredging units in the water storage hole warehouse, and the dredging units along the water storage hole warehouse can simultaneously dredge, so that the dredging efficiency is obviously higher than that of the prior art, and the dredging energy consumption is obviously lower than that of the prior art.
Drawings
Fig. 1 is a schematic structural view of the present application.
FIG. 2 is a cross-sectional view of the dredging unit of the present application.
FIG. 3 is a cross-sectional view of the dredging device of the present application.
In the figure, a horizontal traction device 1, a dredging unit 2, a sand sedimentation tank 3, a dredging device 4, a potential energy transmission part 5, a dredging part 6, a pressure pipe 7, a piston 8, a supporting piece 9, a supporting rod 901, a supporting table 902, a sand container 10, a sand tank 11, a traction buckle 12, a running rail 13, a water inlet valve 14, a water outlet valve 15, a supercharger 16, a power tractor 17, a traction rope 18, a pipeline 19, a supporting rail 20 and a stop block 21.
Detailed Description
The application is further described below with reference to examples.
Example 1:
as shown in fig. 1 and 2, the continuous long-distance energy-saving dredging system of the water storage cave depot comprises a horizontal traction device 1 and three dredging units 2 which are arranged in the water storage cave depot and are communicated through pipelines 19, wherein each dredging unit comprises a sand sedimentation tank 3 and a plurality of dredging devices 4 which are arranged on the pipelines vertically and are positioned in the sand sedimentation tank, the sand sedimentation tank is used for concrete pouring, and the size of the sand sedimentation tank is 8.9m long, 7m wide and 4m deep; the dredging device is arranged in the sand settling pond in a three-transverse four-longitudinal mode, the dredging device comprises a potential energy transmission part 5 vertically connected to the side face of a pipeline and a dredging part 6 arranged at the top end of the potential energy transmission part, the diameter of the pipeline is 1m, a water inlet on the pipeline is provided with a water inlet valve 14 and a supercharger 16, the supercharger is a screw hoist, a water outlet of the pipeline is provided with a water outlet valve 15, the horizontal traction device comprises a power traction machine 17 and a traction rope 18, the power traction machine is positioned at the opening of a water storage hole warehouse, one end of the traction rope is connected with the power traction machine, the other end of the traction rope is detachably connected with the dredging part, the bottom face of the hole in the water storage hole warehouse is provided with a running track 13, and the dredging part is in sliding connection with the running track.
As shown in fig. 3, the dredging device comprises a potential energy transmission part, a pressure pipe 7 and a piston 8, wherein the pressure pipe 7 is vertically arranged at the top of a pipeline, the piston 8 is arranged in the pressure pipe, a stop block 21 is arranged on the inner pipe wall at the top of the pressure pipe, the height of the pressure pipe is 2m, and the inner diameter of the pressure pipe is 1m; the outer diameter of the piston is 1m, and the thickness is 0.2m; the top of the piston is provided with a supporting piece 9, the supporting piece comprises a supporting table 902 which is abutted with the sand container and a supporting rod 901 for connecting the supporting table and the piston, the height of the supporting rod is 1.8m, and the outer diameter of the supporting rod is 0.5m; the sand storage device comprises a support table, and is characterized in that a support rail 20 is arranged on the support table, the support rail is matched with the running rail, a silt accumulation part comprises a sand container 10, a sand groove 11 sleeved on the outer side of the sand container and a traction buckle 12 arranged on the side face of the sand container, the bottom of the sand groove is communicated with the top of a pressure pipe, the sand container is in butt joint with the top of the support table, the support table is provided with a support rail which is horizontal to the central axis of a water storage hole, two ends of the support rail are respectively connected with the running rail, the traction buckle is detachably connected with a traction rope, the groove size of the sand groove is 2m long, 2m wide and 1m deep, a pulley is arranged at the bottom of the sand container and is positioned on the rail, the size of the sand container is 2m long, 2m wide and 1m deep, the wall thickness is 0.01m, and the sand container is made of stainless steel, and a wear-resistant and corrosion-resistant coating is arranged on the outer side of the stainless steel.
A dredging method of a continuous long-distance energy-saving dredging system of a water storage cave depot comprises the following steps:
(1) A dredging unit is arranged along a sediment section of the water storage hole reservoir, adjacent dredging units are connected through a pipeline, a water inlet of the pipeline is communicated with a reservoir, and a water outlet of the pipeline is communicated with a downstream river channel;
(2) When dredging, firstly, simultaneously opening a water inlet valve and a water outlet valve to enable water in the reservoir to flow into the pipeline, closing the water outlet valve after the pipeline is full of water, and closing the water inlet valve after the sand container is ejected out of the sand sedimentation tank;
(3) Connecting the ejected sand container in the step (2) with a traction rope, starting a power tractor to pull the sand container out of the water storage hole warehouse along a track, and removing sediment in the sand container;
(4) And (3) pulling the cleaned sand container back to a supporting table in the sand tank through a traction rope, opening a water outlet valve, and returning the sand container back to the sand tank to finish dredging operation.
Example 2 (discontinuous dredging)
The method of example 1 was used to perform discontinuous dredging operations on a water storage cave depot, the water storage cave depot was provided with 10 dredging units, each dredging unit was independently dredging, 2 operators were required for dredging, the time required for dredging was 30min, the total dredging time for completing the dredging operations was 300min, the power of the power tractor was 4.5kw, and the total dredging energy consumption was 90kw.
Example 3 (continuous dredging)
2 operators required for dredging are required for continuously dredging the water storage hole warehouse in the embodiment 2, the total dredging time for completing dredging operation is 180min, and the total dredging energy consumption is 9kw.
Comparative example 1 (Sand pumping dredging)
When the prior art is used for dredging the water storage cave depot in the embodiment 2, 2 operators are needed for dredging, the sand discharging device is a dredging sand discharging machine (400 mm,315 kw), the total dredging time for completing dredging operation is 600min, and the total dredging energy consumption is 3150kw.
As can be seen from the operation results of the embodiment 2, the embodiment 3 and the comparative example 1, compared with the prior art, the technical scheme provided by the application has the advantages that the dredging efficiency is obviously improved, the dredging energy consumption is obviously reduced, and in the continuous dredging operation, along with the increase of the number of dredging units in the water storage hole warehouse, the dredging efficiency and the energy-saving efficiency which are improved in the dredging operation are also increased.
The foregoing description is only a preferred embodiment of the present application, and is not intended to limit the present application, and any simple modification, variation and equivalent transformation of the above embodiment according to the technical substance of the present application still fall within the scope of the technical solution of the present application.
Claims (9)
1. The continuous long-distance energy-saving dredging system for the water storage hole warehouse is characterized by comprising a horizontal traction device (1) and a plurality of dredging units (2) which are arranged in the water storage hole warehouse and are communicated through pipelines (19), wherein each dredging unit comprises a sand sedimentation tank (3) and a plurality of dredging devices (4) which are arranged in the sand sedimentation tank and are arranged on the pipelines, each dredging device comprises a potential energy transmission part (5) and a dredging part (6), each potential energy transmission part comprises a pressure pipe (7) which is vertically arranged on the pipeline and is communicated with the top of the pipeline and a piston (8) which is arranged in the pressure pipe, the top of the pipeline is provided with a supporting piece (9), one end of each supporting piece is connected with the piston, and the other end of each supporting piece is in butt joint with the bottom of the dredging part; the silt accumulation part comprises a sand container (10), the bottom of the sand container is abutted to the top of the support piece, the side face of the sand container is connected with the horizontal traction device, a water inlet valve (14) and a water outlet valve (15) are arranged on the pipeline, the water inlet valve is located at the water inlet of the pipeline, and the water outlet valve is located at the water outlet of the pipeline.
2. A continuous long-distance energy-saving dredging system for a water storage cave depot according to claim 1, wherein a stop block (21) is arranged on the inner pipe wall of the top of the pressure pipe, and the inner diameter of the pressure pipe is matched with the outer diameter of the piston.
3. A continuous long distance energy saving dredging system as claimed in claim 1 wherein the support comprises a support base (902) abutting the bottom of the vessel and a support rod (901) for connecting the support base and the piston, the total height of the support rod and the piston being greater than the height of the pressure pipe, the outer diameter of the support rod being smaller than the inner diameter of the pressure pipe.
4. A continuous long-distance energy-saving dredging system for a water storage hole warehouse as claimed in claim 3, wherein the top surface of the supporting piece is provided with a supporting rail (20) parallel to the central axis of the water storage hole warehouse, two ends of the supporting rail are provided with running rails (13) which are connected with the supporting rail and in the same direction, and the running rails are positioned on the inner bottom surface of the water storage hole warehouse.
5. A continuous long-distance energy-saving dredging system for a water storage cave depot according to claim 1, wherein a sand groove (11) is sleeved on the outer side of the sand container, the bottom of the sand groove is communicated with the top of the pressure pipe, and the inner diameter of the sand groove is matched with the outer diameter of the sand container.
6. A continuous long distance energy saving dredging system for a water storage cave depot according to claim 1, wherein the side surface of the sand container is provided with a traction buckle (12), and the traction buckle is detachably connected with a horizontal traction device.
7. A continuous long distance energy saving dredging system as claimed in claim 1 wherein said conduit inlet is provided with a booster (16) located at the conduit inlet.
8. A continuous long-distance energy-saving dredging system for a water storage cave depot according to claim 1, wherein the horizontal traction device comprises a power tractor (17) and a traction rope (18), the power tractor is positioned at the cave mouth of the water storage cave depot, one end of the traction rope is connected with the power tractor, and the other end of the traction rope is detachably connected with a sand container.
9. A dredging method using the continuous long-distance energy-saving dredging system of the water storage cave depot according to any one of claims 1 to 8, which is characterized by comprising the following steps:
(1) Paving a pipeline and a dredging unit along a sediment section of a storage hole reservoir, wherein a water inlet of the pipeline is communicated with a reservoir, a water outlet of the pipeline is communicated with a downstream river channel, and adjacent dredging units are connected through pipelines;
(2) Starting dredging operation, firstly, simultaneously opening a water inlet valve and a water outlet valve to enable water in a reservoir to flow into a pipeline and a pressure pipeline, closing the water outlet valve after the pipeline and the pressure pipeline are full of water, and closing the water inlet valve after a sand container is ejected out of a sand sedimentation tank by a support piece; if the reservoir water level is low, the sand container cannot be completely ejected out of the sand sedimentation tank by reservoir potential energy, at the moment, the water inlet valve is closed, and the pressurizer at the water inlet of the pipeline is opened, so that the sand container is lifted to the bottom of the hole;
(3) Connecting the ejected sand container in the step (2) with a horizontal traction device, starting the horizontal traction device to pull the sand container out of the water storage hole warehouse, and removing sediment in the sand container;
(4) And (3) pulling the cleaned sand container in the step (3) back to the support piece through the horizontal traction device, opening the water outlet valve, and returning the sand container to the sand settling tank to finish dredging operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555093.9A CN115162260B (en) | 2022-05-20 | 2022-05-20 | Continuous long-distance energy-saving dredging system and dredging method for water storage cave depot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210555093.9A CN115162260B (en) | 2022-05-20 | 2022-05-20 | Continuous long-distance energy-saving dredging system and dredging method for water storage cave depot |
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| CN115162260B true CN115162260B (en) | 2023-10-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004011184A (en) * | 2002-06-04 | 2004-01-15 | Kojimagumi:Kk | Dredging device and dredging method for lightweight earth and sand |
| CN106193160A (en) * | 2016-07-18 | 2016-12-07 | 王兴奎 | A kind of mole lifts sandbox automatic sand discharging and silt efficient utilization device |
| CN110714444A (en) * | 2019-10-22 | 2020-01-21 | 陈小娟 | Hydrodynamic force linkage silt flushing and sand discharging facility |
-
2022
- 2022-05-20 CN CN202210555093.9A patent/CN115162260B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004011184A (en) * | 2002-06-04 | 2004-01-15 | Kojimagumi:Kk | Dredging device and dredging method for lightweight earth and sand |
| CN106193160A (en) * | 2016-07-18 | 2016-12-07 | 王兴奎 | A kind of mole lifts sandbox automatic sand discharging and silt efficient utilization device |
| CN110714444A (en) * | 2019-10-22 | 2020-01-21 | 陈小娟 | Hydrodynamic force linkage silt flushing and sand discharging facility |
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| CN115162260A (en) | 2022-10-11 |
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