An inland jet-suction dredging and solidification integrated working boat and working method thereof

Abstract

The present invention discloses an inland river jet suction dredging and solidification integrated working boat, comprising a hull, a jet suction device and a dehydration and solidification device, wherein the jet suction device is located at the bow of the hull, a water pump provides working water for the jet suction device, a mud suction pipe of the jet suction device is connected to a flat screen, a mud compartment is located below a discharge port at the bottom of the flat screen, an overflow trough is provided at the tail of the mud compartment, the lower part of the mud compartment is connected to a sedimentation tank of the dehydration and solidification device through a pipeline provided with a mud pump, and the sedimentation tank, dehydrator and centrifuge are all connected to a tailwater tank arranged below them through a water collecting pipe. The inland river jet suction dredging and solidification integrated working boat provided by the present invention adopts the jet suction principle to absorb mud, organically combines an independent marine sludge dehydration treatment device with the hull, so that the working boat has multiple functions such as dredging, sorting, overflow, dehydration and tailwater treatment.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship engineering, and relates to a dredging work ship, and more specifically, to an inland jet-suction dredging and solidification integrated work ship and a working method thereof. Background Art

[0002] Dredging to remove underwater polluted soil from rivers and lakes and to carry out engineering treatment is an important part of dredging engineering. In recent years, with the increasing requirements of human beings for environmental standards, preventing and reducing the pollution brought to water and land by dredging engineering has become an important issue that must be considered. The various types of dredgers currently used in rivers, lakes and reservoirs in my country generally only have dredging and transportation functions, and do not have sludge treatment functions. The dredging method is to use dredgers to remove river sludge and transport it to the mud discharge field on the shore, and decompose and dehydrate the dredged soil in the mud discharge field. This dredging method requires the establishment of a large area of ​​mud discharge field on the shore, which is difficult to implement in cities and their surrounding areas; the surface water separated by the mud discharge field enters the surrounding river network from the water outlet, and the dehydrated sludge is transported to brick factories or landfills. If the intermediate process is not managed properly, it is easy to cause secondary pollution to the environment; for projects with a wide dredging range and a large dredging volume, the transportation and treatment of dredged soil will require more time and cost.

[0003] The sludge dewatering dredger has its own dredged soil dewatering function. The dewatered soil can be directly landed or brought ashore by barge for reuse. This disposal method can better solve the problems of existing river and lake dredgers. However, there is still little research on dredgers with sludge dewatering function in my country. Such dredgers are basically conceptual ships with general practicality and many shortcomings. The invention patent with the patent number ZL201410098022.6 and the name of "Automated Dewatering Dredger for River Silt and Its Use Method" uses a dredger to dig or a dredger to suck river sludge, and a sorter to separate the sludge into solid and liquid, and reagents are added at the same time. Then, the precipitated mud is filtered to form a mud cake, and the water after filtering is discharged into the river. The dredger has two types of dredging equipment at its bow, including a dredger and a dredger. It seems to have many functions, but in actual application, if the dredger is installed inside the hull, it cannot swing left and right, and it has to rely on the hull to swing. This is difficult to achieve due to the limited inland waters, and the construction accuracy will also be limited; the grab dredger has poor environmental performance, and the grabbed silt often needs to be prepared in a mud tank, and it can only enter the drying device by adding water and stirring in the mud tank, and the process is difficult to control. In addition, the water discharged from the dredger after pressure filtration is discharged into the river. This water contains artificially added reagents, and direct discharge without treatment will affect the original water quality; the water content of the mud water absorbed by the dredger is relatively high, and the subsequent mud treatment workload is large. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems and defects of the above-mentioned existing sludge dewatering dredgers, and to provide an inland river jet-suction dredging and solidification integrated working boat and its working method, so as to solve the technical problems of the existing dewatering dredgers such as insufficient practical performance and environmental protection performance, large mud dewatering disposal volume and low efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An inland jet-suction dredging and solidification integrated working ship, comprising a hull, a jet-suction device and a dehydration and solidification device, wherein the dehydration and solidification device comprises a sedimentation tank, a dehydrator, a centrifuge and a soil material processing machine which are sequentially connected through a conveyor belt, and further comprises a flat screen, a temporary storage box, a river water tank, a mud tank, an overflow tank, a water pump, a water pipe, a mud suction pipe, a mud pump, a water collecting pipe and a tailwater tank, wherein the jet-suction device is located at the bow of the hull, the water pump is communicated with the river water tank and is connected to the jet-suction device through the water pipe to provide working water for the jet-suction device, and the mud suction pipe of the jet-suction device is connected to the flat screen , the temporary storage box is provided on one side of the flat screen, the mud chamber is located below the discharge port at the bottom of the flat screen, the overflow trough is provided at the tail of the mud chamber, the lower part of the mud chamber is connected with the sedimentation tank of the dehydration and solidification equipment through a pipeline provided with the mud pump, the sedimentation tank, the dehydrator and the centrifuge are all connected with the tailwater tank provided thereunder through the water collecting pipe, the sedimentation tank and the dehydrator precipitate and dehydrate the mud, the centrifuge uses centrifugal force to further separate the solid and the liquid, and the soil material processing machine makes the dehydrated soil into mud blocks.

[0007] According to a further preferred embodiment, the flat screen has a certain inclination to facilitate screening of the sludge, and a folding grid frame that can rotate at multiple angles is provided on the upper portion of the flat screen, through which the large particles screened out can be poured into the temporary storage box.

[0008] A further preferred solution is that the mud pump is connected to the sedimentation tank of the dehydration and solidification equipment through mud pipe 1; the mud pump is connected to the mud compartment through mud pipe 2, the mud compartment is an inverted trapezoid, which is convenient for mud and water stratification and reduces mud and sand residue, and the mud inlet between the mud compartment and mud pipe 2 is close to the bottom of the mud compartment, which is convenient for sucking mud.

[0009] According to a further preferred embodiment, a fine mesh for filtering mud is provided at the connection between the overflow trough and the mud compartment. When the mud compartment is loaded close to or reaches a limit, water in the upper layer of the mud compartment can be discharged through the overflow trough to reduce the amount of sludge dehydration disposal.

[0010] A further preferred solution is that a belt conveyor is provided on the hull adjacent to the soil processing machine, the belt conveyor is connected to the hull by a movable bracket, the belt conveyor can rotate 180° and extend or retract in length on the plane of the hull, and the processed mud blocks can be delivered to the shore or barge through the belt conveyor.

[0011] In a further preferred solution, the capacity of the water pump must meet the suction volume of the jet suction device, but cannot exceed the suction volume of the jet suction device. The capacity of the jet suction device must be greater than the capacity of the dehydration and solidification device. The capacity of the mud tank can be determined based on the hull size, ship moving operation, etc., so that the dehydration and solidification device can complete the dehydration work of the dredging volume within a dredging and ship moving positioning time period. The size of the tailwater pool should be determined based on the purification capacity and the amount of polluted water generated by the dehydration and solidification equipment.

[0012] According to a further preferred embodiment, a deckhouse for crew living is provided on the hull.

[0013] According to a further preferred embodiment, the hull is provided with three sets of positioning pile devices, which are respectively located at the middle slot positions of the bow, port and starboard sides and the stern.

[0014] A further preferred solution is that a driving cab is provided at the front of the hull, and a control console is provided in the driving cab for controlling the injection and suction equipment, the dehydration and solidification equipment, the flat screen, the water pump, the mud pump and the positioning pile device, which is used for automatic control of the ship and monitoring the operation and working status of the ship.

[0015] The working method of the inland river jet-suction dredging and solidification integrated working ship of the present invention is as follows: first, the ship is positioned for operation, and the jet-suction equipment starts dredging operation; when the end face siltation operation is completed, the ship is shifted for operation, and the jet-suction equipment stops working during the ship shifting process, while the dehydration and solidification equipment can continue to work; after the ship is repositioned for operation, the jet-suction equipment repeats the dredging operation. In the cycle of positioning-dredging-shifting-positioning, the ship completes the dredging work of the entire dredging river channel.

[0016] The specific contents and steps of the work are as follows: the high-pressure working water pump sucks clean water outside the ship through the river water tank, and after pressurization, it is sent to the underwater nozzle of the jet suction equipment through the water pipe, and sprayed out through the nozzle at high speed to form a mud-water mixture. The jet suction equipment then sucks the mud-water mixture along the mud suction pipe and transports it to the flat screen; after the impurities are screened out by the flat screen, the folding grid frame is rotated to make the impurities fall into the temporary storage box, and the screened mud-water mixture enters the mud cabin; the mud cabin performs preliminary sedimentation on the mud-water mixture, so that the mud and water are layered. The upper part is water and the lower part is mud. The upper water is discharged into the river after overflow treatment of the overflow trough, and the lower mud is transported to the sedimentation tank of the dehydration and solidification equipment through the mud pump; the mud is transformed into soil and polluted water after flocculation and primary filtration in the sedimentation tank, dehydration treatment in the dehydrator, and centrifugal dehydration in the centrifuge. The soil is made into mud blocks by the soil processing machine and then transported to the off-board transport equipment through the belt conveyor, while the polluted water is transported to the tailwater pool through the water collecting pipe and discharged after purification in the tailwater pool.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides an inland jet suction dredging and solidification integrated work boat, which adopts the jet suction principle to suck mud, organically combines an independent marine sludge dewatering treatment device with the hull, so that the work boat has multiple functions such as dredging, sorting, overflow, dewatering and tailwater treatment. The structure of the present invention is relatively simple, and the jet suction equipment, dewatering and solidification equipment, etc. are easy to repair and replace. With the improvement of the technical level, new equipment can also be replaced. The service life of the ship is relatively long and the utilization rate is high; the tailwater treatment function enables the polluted water with chemical reagents to return to the river channel as clean water, so that the dredging, solidification, discharge and transportation links in the dredging process are more environmentally friendly; the overflow function can effectively reduce the disposal amount of sludge dewatering, reduce the dewatering time and cost, and improve the operating conditions of the dewatering treatment device, thereby ensuring its operating quality; the overall ship structure layout is relatively reasonable, the working environment and conditions are relatively perfect, and it has good practicality. The present invention not only has the advantages of existing sludge dewatering dredgers, but is also more environmentally friendly, low-consumption, and easy to implement. It has simple maintenance, high dredging efficiency, low dredging cost, easy control of excavation sections, and good construction quality. It can be widely used in inland river dredging and ecological dredging projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 This is a schematic plan view of the main deck of a hull according to an embodiment of the present invention;

[0021] Figure 3A schematic plan view of a hull bottom according to an embodiment of the present invention;

[0022] In the figure: 1. hull, 2. jet suction equipment, 3. dehydration and solidification equipment, 301. sedimentation tank, 302. dehydrator, 303. centrifuge, 304. soil processing machine, 4. flat screen, 5. temporary storage box, 6. river water tank, 7. mud tank, 8. overflow tank, 9. water pump, 10. water pipe, 11. mud suction pipe, 12. mud pump, 13. folding grid frame, 14. mud pipe 1, 15. mud pipe 2, 16. water collecting pipe, 17. tailwater pool, 18. belt conveyor, 19. movable bracket, 20. deck house, 21. positioning pile device, 22. cab. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that this description is only used to illustrate the present invention and is not used to limit the scope of protection of the present invention. In addition, it should be understood that after reading the content recorded in the present invention, the various equivalent forms of changes and modifications made by those skilled in the art to the present invention all fall within the scope defined by the claims of this application.

[0024] Product Examples

[0025] like Figure 1 , Figure 2 and Figure 3As shown, an inland river jet-suction dredging and solidification integrated working ship of the present invention comprises a hull 1, a jet-suction device 2 and a dehydration and solidification device 3, wherein the dehydration and solidification device 3 is an independent marine sludge dehydration treatment device comprising a sedimentation tank 301, a dehydrator 302, a centrifuge 303 and a soil material processing machine 304 which are sequentially connected by a conveyor belt, and further comprises a flat screen 4, a temporary storage box 5, a river water tank 6, a mud compartment 7, an overflow trough 8, a water pump 9, a water pipe 10, a mud suction pipe 11, a mud pump 12, a water collecting pipe 16 and a tailwater tank 17, wherein the jet-suction device 2 is located at the bow of the hull 1, the water pump 9 is communicated with the river water tank 6 and is connected to the jet-suction device 2 through the water pipe 10 to provide working water for the jet-suction device 2, the mud suction pipe 11 of the jet-suction device 2 is connected to the flat screen 4, one side of the flat screen 4 is provided with the temporary storage box 5, the mud compartment 7 is located below the bottom discharge port of the flat screen 4, on the one hand It is used to coordinate the operation between the dredging equipment and the dehydration and solidification equipment 3, store surplus mud and water, so that the workboat can still perform dehydration operations when performing ship moving operations or not sucking mud. On the other hand, since the water content of the sucked-up mud and water is relatively high, the subsequent dehydration processing workload is large, and the mud and water can be initially precipitated through the mud chamber 7 to make it stratified; the tail of the mud chamber 7 is provided with the overflow trough 8, and the lower part of the mud chamber 7 is connected to the sedimentation tank 301 of the dehydration and solidification equipment 3 through a pipeline provided with the mud pump 12. The sedimentation tank 301, the dehydrator 302 and the centrifuge 303 are all connected to the tailwater tank 17 arranged thereunder through the water collecting pipe 16. The sedimentation tank 301 and the dehydrator 302 precipitate and dehydrate the mud by adding reagents. The centrifuge 303 uses centrifugal force to further separate solid and liquid. The soil processing machine 304 makes the dehydrated soil into mud blocks.

[0026] like Figure 1 As shown, the flat screen 4 has a slope of 0 to 60°, which is convenient for screening the sludge. A folding grid frame 13 that can rotate at multiple angles is provided on the upper part of the flat screen 4. The large particles screened out can be poured into the temporary storage box 5 through the folding grid frame 13.

[0027] The mud pump 12 is connected to the sedimentation tank 301 of the dehydration and solidification equipment 3 through a mud pipe 14; the mud pump 12 is connected to the mud compartment 7 through a mud pipe 2 15. The mud compartment 7 is an inverted trapezoid, and the mud inlet between the mud compartment 7 and the mud pipe 2 15 is close to the bottom of the mud compartment 7.

[0028] A fine mesh for filtering mud is arranged at the connection between the overflow trough 8 and the mud chamber 7. When the mud chamber 7 is loaded close to or reaches a certain range, the water in the upper layer of the mud chamber 7 can be discharged through the overflow trough 8, which can effectively reduce the disposal amount of subsequent dehydration work.

[0029] The capacity of the water pump 9 must meet the suction volume of the injection and suction device 2, but cannot exceed the suction volume of the injection and suction device 2. The capacity of the injection and suction device 2 must be greater than the capacity of the dehydration and solidification device 3. The capacity of the mud tank 7 can be determined based on the hull size, ship moving operation, etc., so that the dehydration and solidification device 3 can complete the dehydration work of the dredging volume within a dredging and ship moving positioning time period. The size of the tailwater pool 17 is determined based on the purification capacity and the amount of polluted water generated by the dehydration and solidification device 3.

[0030] like Figure 1 and Figure 2 As shown, a belt conveyor 18 is provided on the hull 1 adjacent to the soil processing machine 304. The belt conveyor 18 is connected to the hull 1 via a movable bracket 19. The belt conveyor 18 can rotate 180° and extend or retract in length on the plane of the hull 1. Through the belt conveyor 18, the processed mud blocks can be delivered to the shore or barge.

[0031] like Figure 1 and Figure 2 As shown, the hull 1 is provided with a deckhouse 20 for accommodating the crew members.

[0032] like Figure 1 and Figure 2 As shown, the hull 1 has three sets of positioning pile devices 21, which are respectively arranged at the middle slot positions of the bow, starboard, and stern of the hull 1.

[0033] like Figure 1 and Figure 2 As shown, a cab 22 is provided at the front of the hull 1, and a control console for controlling the injection and suction equipment 2, the dehydration and solidification equipment 3, the flat screen 4, the water pump 9, the mud pump 12, and the positioning pile device 21 is provided in the cab 22, which is used for ship automation control and monitoring of ship operation and working conditions.

[0034] Figure 3 It is a plan view schematic diagram of the distribution of the hull bottom structure during specific implementation, in which the layout of the steering gear room, fuel tank, fresh water tank, river water tank A and navigation engine room located at the stern of the hull 1 and the forepeak tank, fore ballast tank, fuel tank and working pump room located at the bow of the hull 1 are marked.

[0035] Method Embodiment

[0036] The working method of the above-mentioned inland river jet-suction dredging and solidification integrated working boat has the following specific contents and steps: the high-pressure working water pump 9 sucks clean water outside the boat through the river water tank 6, and after pressurization, it passes through the water pipe 10 to the underwater nozzle of the jet-suction device 2, and is sprayed out through the nozzle at high speed to form a mud-water mixture, and the jet-suction device 2 then sucks the mud-water mixture along the mud suction pipe 11 and transports it to the flat screen 4; after the impurities are screened out by the flat screen 4, the folding grid frame 13 is rotated to make the impurities fall into the temporary storage box 5, and the screened mud-water mixture enters the mud cabin 7; the mud cabin 7 performs preliminary sedimentation on the mud-water mixture, so that the mud and water are separated into layers, with water on the upper part and mud on the lower part, and the water on the upper part is separated by the overflow The overflow of the tank 8 is discharged into the river after treatment, and the lower mud is transported to the sedimentation tank 301 of the dehydration and solidification equipment 3 by the mud pump 12; the mud is converted into soil and polluted water after flocculation and primary filtration in the sedimentation tank 301, dehydration treatment in the dehydrator 302, and centrifugal dehydration in the centrifuge 303. The soil is made into mud blocks by the soil processing machine 304, and then transported to the off-board transport equipment by the belt conveyor 18, while the polluted water is transported to the tailwater tank 17 through the water collecting pipe 16, and discharged after purification in the tailwater tank 17. Since chemical reagents need to be added to the mud during the dehydration and solidification process, the tailwater tank 17 can purify the polluted water formed after dehydration before discharging it.

[0037] The inland jet suction dredging and solidification integrated working boat provided by the present invention has the advantages of both the existing jet suction dredger and the sludge dewatering dredger, and compared with the existing sludge dewatering dredger, it has good dredging quality, stronger practicality, better environmental protection and higher working efficiency. The use process has a high degree of automation, is convenient and efficient, and is simple to maintain and has a high utilization rate. It is suitable for use in dredging projects of rivers and lakes, especially ecological dredging or maintenance dredging projects.

[0038] The above is only an embodiment of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, any technical solution formed by equivalent replacement or equivalent transformation without departing from the concept of the present invention belongs to the protection scope required by the present invention.

Claims

1. An inland jet-suction dredging and solidification integrated working vessel, comprising a hull (1), a jet-suction device (2) and a dehydration and solidification device (3), wherein the dehydration and solidification device (3) comprises a sedimentation tank (301), a dehydrator (302), a centrifuge (303) and a soil material processing machine (304) which are sequentially connected via a conveyor belt, Features: It also includes a flat screen (4), a temporary storage box (5), a river water box (6), a mud chamber (7), an overflow tank (8), a water pump (9), a water pipe (10), a mud suction pipe (11), a mud pump (12), a water collecting pipe (16) and a tailwater pool (17). The jet suction device (2) is located at the bow of the hull (1). The water pump (9) is in communication with the river water box (6) and is connected to the jet suction device (2) through the water pipe (10) to provide working water for the jet suction device (2). The mud suction pipe (11) of the jet suction device (2) is connected to the flat screen (4). The temporary storage box (5) is provided on one side of the flat screen (4). The mud chamber (7) is located on the flat screen. (4) Below the bottom discharge port, the overflow trough (8) is provided at the tail of the mud chamber (7), the lower part of the mud chamber (7) is connected to the sedimentation tank (301) of the dehydration and solidification equipment (3) through a pipeline provided with the mud pump (12), the sedimentation tank (301), the dehydrator (302) and the centrifuge (303) are all connected to the tailwater tank (17) provided below them through the water collecting pipe (16), the sedimentation tank (301) and the dehydrator (302) perform sedimentation and dehydration treatment on the mud, the centrifuge (303) uses centrifugal force to further separate the solid and the liquid, and the soil material processing machine (304) makes the dehydrated soil material into mud blocks; The flat screen (4) has an inclination of 0 to 60 degrees, which is convenient for screening the sludge. A folding grid frame (13) that can rotate at multiple angles is provided on the top of the flat screen (4). The large particles screened out can be poured into the temporary storage box (5) through the folding grid frame (13); The mud pump (12) is connected to the sedimentation tank (301) of the dehydration and solidification equipment (3) through a mud pipe 1 (14); the mud pump (12) is connected to the mud chamber (7) through a mud pipe 2 (15); the mud chamber (7) is in an inverted trapezoidal shape, and a mud inlet between the mud chamber (7) and the mud pipe 2 (15) is close to the bottom of the mud chamber (7).

2. An inland jet-suction dredging and solidification integrated working vessel as claimed in claim 1, Features: A fine mesh for filtering mud is provided at the connection between the overflow trough (8) and the mud chamber (7); when the mud chamber (7) is loaded close to or reaches a range, water in the upper layer of the mud chamber (7) can be discharged through the overflow trough (8).

3. The inland jet-suction dredging and solidification integrated working vessel as claimed in claim 1, Features: A belt conveyor (18) is provided on the hull (1) adjacent to the soil processing machine (304). The belt conveyor (18) is connected to the hull (1) via a movable bracket (19). The belt conveyor (18) can rotate 180 degrees and extend or retract in length on the plane of the hull (1). The processed mud blocks can be transported to the shore or a barge via the belt conveyor (18).

4. The inland jet-suction dredging and solidification integrated working vessel as claimed in claim 1, Features: The hull (1) is provided with a deckhouse (20) for accommodating the crew members.

5. The inland jet-suction dredging and solidification integrated working vessel as claimed in claim 1, Features: The hull (1) has three sets of positioning pile devices (21), which are respectively located at the middle slot positions of the bow, port and stern of the hull (1).

6. The inland jet-suction dredging and solidification integrated working vessel as claimed in claim 5, Features: A cab (22) is provided at the front of the hull (1), and a control console for controlling the jet suction device (2), the dehydration and solidification device (3), the flat screen (4), the water pump (9), the mud pump (12), and the positioning pile device (21) is provided in the cab (22), and is used for automatic control of the ship and monitoring the operation and working status of the ship.

7. A working method of an inland jet-suction dredging and solidification integrated working vessel as claimed in any one of claims 1 to 6, Features: The water pump (9) sucks clean water from outside the ship through the river water tank (6), and after pressurization, it is sent to the underwater nozzle of the jet suction device (2) through the water pipe (10), and is ejected at high speed through the nozzle to form a mud-water mixture. The jet suction device (2) then sucks the mud-water mixture along the mud suction pipe (11) and transports it to the flat screen (4). After the impurities are screened out by the flat screen (4), the folding grid frame (13) is rotated to make the impurities fall into the temporary storage box (5), and the screened mud-water mixture enters the mud tank (7). The mud tank (7) performs preliminary sedimentation on the mud-water mixture, so that the mud and water are separated into layers, with the upper part being water and the lower part being mud, and the upper part being water. The water is discharged into the river after overflow treatment through the overflow trough (8), and the lower mud is transported to the sedimentation tank (301) of the dehydration and solidification equipment (3) through the mud pump (12); the mud is converted into soil material and polluted water after flocculation and primary filtration in the sedimentation tank (301), dehydration treatment in the dehydrator (302), and centrifugal dehydration in the centrifuge (303); the soil material is made into mud blocks by the soil material processing machine (304), and then transported to the off-board transport equipment through the belt conveyor (18), while the polluted water is transported to the tailwater tank (17) through the water collecting pipe (16), and discharged after purification in the tailwater tank (17).

Images