An environmentally friendly dredging device

Abstract

The present invention discloses an environmental protection dredging device, which comprises a hull, a reamer part and a winch device installed on the hull. The reamer part includes a cantilever pivotally connected to the hull and a reamer head installed on the cantilever. The dredging device further includes a mud suction part installed on the hull and the reamer part, and a mud treatment device connected to the mud suction part. The environmental protection dredging device is relatively small, with limited length, width and draft, and is suitable for shallow water operations. When the environmental protection dredging device is operating, it does not require measures such as river interception and precipitation for the river channel, and has little impact on the river channel. When the cutter suction dredger is dredging, the degree of mechanization is high and the manpower requirement is low. The mud treatment equipment can process mud quickly. The mud treatment equipment does not require auxiliary additives to process mud and is pollution-free. The reamer head can break obstacles with relatively high hardness, improving the dredging efficiency. Due to the configuration of the reamer head, it is not affected by aquatic plants in the river channel during construction, can construct quickly, and has a wide range of applications.

Description

Technical Field

[0001] The present invention belongs to the field of shield machine equipment, and particularly relates to an environmental protection dredging equipment. Background Art

[0002] There is a large amount of silt in existing water areas such as reservoirs, lakes, and rivers, which is particularly prominent in urban river channels. The current dredging methods for urban river channels mainly involve first intercepting the flow, then pumping dry the intercepted part, and then using manual excavation or excavator excavation. The overall excavation efficiency is low, and the labor intensity of people is very high. Most river channels are not suitable for mechanized operations of equipment such as excavators, and the construction difficulty is high. River channel interception causes the water in the river channel to be non-flowing, the interception time is limited, and it is greatly affected by the weather. When the river channel is wide, it is difficult to collect the silt dug out from the river channel, and the construction cost is high. River channel interception dredging operations are not suitable for large-area and long-distance operations. Existing cutter suction dredgers are generally very large in size, expensive, and not suitable for shallow water operations. During operation, the pumped slurry is discharged into a static pond, and the clear water inside is pumped out after the slurry has settled to treat the silt. Moreover, the occupied area of the static pond is very large, and the static time is relatively long. Summary of the Invention

[0003] The purpose of the present invention is to provide an efficient and convenient environmental protection dredging equipment.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: an environmental protection dredging equipment, which includes a hull, a cutter head part and a hoisting device installed on the hull. The cutter head part includes a cantilever pivotally connected to the hull and a cutter head installed on the cantilever. The dredging equipment further includes a mud suction part installed on the hull and the cutter head part, and a slurry treatment device connected to the mud suction part.

[0005] Optimally, the mud suction part includes a mud suction port with the front end located behind the cutter head, a first-stage rigid pipe fixedly installed on the cantilever, a first-stage pump installed on the first-stage rigid pipe and fixedly connected to the cantilever, a second-stage rigid pipe fixed to the hull, a first-stage flexible pipe connected between the first-stage rigid pipe and the second-stage rigid pipe, and a second-stage flexible pipe connected between the second-stage rigid pipe and the slurry treatment device.

[0006] Optimally, the hoisting device includes a front pulley rotatably connected to the front end of the cantilever and a rear pulley at the rear end of the cantilever, a steel wire rope with the front end fixed to the cantilever and bypassing the front pulley and the rear pulley, and a winch. The rear end of the steel wire rope is fixed to the winch and at least part of it is wound around the winch.

[0007] Optimally, the mud suction part further includes a second-stage pump provided on the second-stage rigid pipe and fixed to the hull.

[0008] Further, when the dredging equipment stops working, the cantilever swings upward. At this time, the position of the mud suction port is higher than that of the first-stage pump, the position of the first-stage pump is higher than that of the first-stage hose, the first-stage hose is at the same height as the second-stage pump, and the height of the main body of the second-stage rigid pipe is higher than that of the second-stage pump.

[0009] Further, the height of the front pulley is always lower than that of the rear pulley, and the height of the rear pulley is always higher than that of the winch.

[0010] Optimally, the mud treatment device includes a diverter, a vibrating screen connected to the downstream of the diverter, a primary screening discharge port, a slurry storage tank assembly, a hydrocyclone assembly, a dewatering screen, and a fine screening discharge port.

[0011] Further, the vibrating screen is inclined. A coarse material discharge port is formed above its screen and is connected to the primary screening discharge port, and a fine screening discharge port is formed below its screen and is connected to the slurry storage tank assembly.

[0012] Further, the slurry storage tank assembly includes a slurry pump, the slurry pump is connected to the hydrocyclone assembly, the upper end of the hydrocyclone assembly is connected to the slurry storage tank assembly, and the lower end is connected to the dewatering screen.

[0013] Further, the mud treatment device further includes a waste slurry treatment component. The waste slurry treatment component includes an external pressure filter box, an internal filter box arranged in the external pressure filter box, and a diaphragm component for squeezing the waste slurry in the internal filter box to filter out moisture after squeezing. The diaphragm component includes a first compression package arranged in the external pressure filter box and on one side or the circumferential surface of the internal filter box, and a pump body for pumping expansion filler into the first compression package.

[0014] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: The environmental protection dredging equipment is relatively small, with limited length, width and draft, and is suitable for shallow water operations. When the environmental protection dredging equipment is operating, it is not necessary to take measures such as river interception and dewatering for the river channel, and the impact on the river channel is small. When the cutter suction dredger is dredging, the degree of mechanization is high and the manpower requirement is low. All the slurry discharged by the cutter suction dredger through the pipeline is transported to the mud treatment system, and the filtered muck is very concentrated. The operation range is enlarged through the extended hose, and the operation range is large. The mud treatment equipment is an integrated equipment, with light weight and convenient movement. The mud treatment equipment occupies a small area and is suitable for operation within the city. The mud treatment equipment can process mud quickly. The mud treatment equipment does not require auxiliary additives to process mud and is pollution-free. The cutter head can break obstacles with relatively high hardness, improving the dredging efficiency. Due to the configuration of the cutter head, the construction is not affected by the waterweeds in the river channel, and the construction can be carried out quickly with a wide application range; the inclined setting of the vibrating screen can realize the unpowered discharge of coarse materials. Description of the Drawings

[0015] Figure 1 This is a schematic structural diagram of the dredging equipment of the present invention in a non-working state;

[0016] Figure 2 This is a schematic structural diagram of the dredging equipment of the present invention in a working state;

[0017] Figure 3 This is a schematic diagram of the principle of the mud treatment device of the present invention;

[0018] Figure 4 This is a schematic structural diagram of the waste slurry treatment component;

[0019] Figure 5 is Figure 4 an enlarged view of part A in

[0020] Figure 6 This is a top view of the second compression package;

[0021] Figure 7 This is a schematic diagram of the working process of the waste slurry treatment component. Detailed implementation manners

[0022] The present invention will be further described below in conjunction with the embodiments shown in the drawings.

[0023] As Figure 1 shown, the environmental protection dredging equipment includes: a hull 1, a reamer part and a winch device installed on the hull 1. The reamer part includes a cantilever 2 pivotally connected to the hull 1 and a reamer head 3 installed on the cantilever 2. The dredging equipment further includes a mud suction part installed on the hull 1 and the reamer part, and a mud treatment device 15 connected to the mud suction part.

[0024] The mud suction part includes a mud suction port 4 with the front end located behind the reamer head 3, a first-stage rigid pipe 5 fixedly installed on the cantilever 2, a first-stage pump 6 installed on the first-stage rigid pipe 5 and fixedly connected to the cantilever 2, a second-stage rigid pipe 7 fixed to the hull 1, a first-stage flexible pipe 8 connected between the first-stage rigid pipe 5 and the second-stage rigid pipe 7, a second-stage flexible pipe 9 connected between the second-stage rigid pipe 7 and 15, and a second-stage pump 10 provided on the second-stage rigid pipe 7 and fixed to the hull 1.

[0025] The winch device includes a front pulley 11 rotatably connected to the front end of the cantilever 2 and a rear pulley 12 at the rear end of the cantilever 2, a steel wire rope 13 with the front end fixed to the cantilever 2 and passing around the front pulley 11 and the rear pulley 12, and a winch 14. The rear end of the steel wire rope 13 is fixed to the winch 14 and at least part of it is wound around the winch 14. The height of the front pulley 11 is always lower than that of the rear pulley 12, and the height of the rear pulley 12 is always higher than that of the winch 14.

[0026] When the dredging equipment stops working, the cantilever 2 swings upward. At this time, the position of the mud suction port 4 is higher than that of the first-stage pump 6, the position of the first-stage pump 6 is higher than that of the first-stage hose 8, the first-stage hose 8 is at the same height as the second-stage pump 10, and the height of the main body of the second-stage rigid pipe 7 is higher than that of the second-stage pump 10.

[0027] The mud treatment device 15 includes a diverter 151, a vibrating screen 152 connected downstream of the diverter, a primary screening discharge port 156, a slurry storage tank assembly 157, a hydrocyclone assembly 153, a dewatering screen 154, and a fine screening discharge port 155. The vibrating screen is inclined, a coarse material discharge port is formed above its screen mesh and is connected to the primary screening discharge port, and a fine screening discharge port is formed below its screen mesh and is connected to the slurry storage tank assembly. The slurry storage tank assembly 157 includes a slurry pump 1571, the slurry pump 1571 is connected to the hydrocyclone assembly 153, the upper end of the hydrocyclone assembly 153 is connected to the slurry storage tank assembly 157, and the lower end is connected to the dewatering screen 154. A water return tank 158 is provided below the dewatering screen.

[0028] The mud treatment device 15 further includes a waste slurry treatment component 159. The waste slurry treatment component 159 includes an external pressure filter box 1591, an internal filter box 1592 disposed inside the external pressure filter box and communicated with the water return tank 158 through an introduction pipe 150, and a diaphragm component 1593 for squeezing the waste slurry in the internal filter box 1592 to filter out water after extrusion. An export pipeline 15912 for discharging the squeezed and filtered water is formed between the external pressure filter box 1591 and the internal filter box 1592, and a flushing conduit 15911 is also connected to the export pipeline 15912. The diaphragm component 1593 includes a first compression package 1594 disposed inside the external pressure filter box 1591 and on one side or the circumferential surface of the internal filter box 1592, and a pump body 1595 for pumping expansion filler into the first compression package 1594.

[0029] The internal filter box 1592 includes a main box body 1596, a lower left bottom seal 1597 and a lower right bottom seal 1598 disposed below the main box body and spliced with the main box body to form a complete internal filter box. The lower left bottom seal and the lower right bottom seal are made of an elastic material. The diaphragm component 1593 further includes a second compression package 1599 communicated with the first compression package 1594. The second compression package includes a main body 1590 in the shape of an unclosed ring and a sub-body 15910 for connecting the main body with the first compression package and the main body. The main body is disposed around the lower left bottom seal and the lower right bottom seal. When filtering the muddy water, the first compression package bulges, squeezing one side or the periphery of the internal filter box, and the second compression package bulges upward at the same time to lift the lower left bottom seal and the lower right bottom seal and exceed the lower end of the inner side wall of the internal filter box. When discharging the slag, the lower left bottom seal and the lower right bottom seal are separated to form a slag discharge gap.

[0030] The working principle of the present invention is as follows: Stones, sediment, and aquatic plants at the bottom of rivers and lakes are crushed by the cutter head and then enter the mud suction port, and then enter the mud treatment device 15 along the first-stage rigid pipe, first-stage flexible pipe, second-stage rigid pipe, and second-stage flexible pipe. Subsequently, the coarse materials are discharged through the diverter 151, the vibrating screen 152 connected downstream of the diverter, and the primary screening discharge port 156; the fine materials are discharged through the diverter 151, the vibrating screen 152, the slurry storage tank assembly 157, the cyclone assembly 153, the dewatering screen 154, and the fine screening discharge port 155.

[0031] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and it should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An environmentally friendly dredging device, which includes a hull, a cutterhead part and a winch device installed on the hull. The cutterhead part includes a cantilever pivotally connected to the hull and a cutterhead installed on the cantilever, and is characterized in that: The dredging equipment further includes a mud suction part installed on the hull and the cutter part, and a mud treatment device connected to the mud suction part; The mud treatment device includes a diverter, a vibrating screen connected downstream of the diverter, a primary screening discharge port, a slurry storage tank assembly, a hydrocyclone assembly, a dewatering screen, and a fine screening discharge port, and a waste slurry treatment component. The waste slurry treatment component includes an external pressure filter box, an internal filter box arranged inside the external pressure filter box, and a diaphragm assembly for squeezing the waste slurry inside the internal filter box to filter out moisture. The diaphragm assembly includes a first compression pack arranged inside the external pressure filter box and on one side or the circumferential surface of the internal filter box, and a pump body for pumping expansion filler into the first compression pack; The internal filter box includes a main box body, a lower left bottom seal and a lower right bottom seal arranged below the main box body and spliced with the main box body to form a complete internal filter box. The lower left bottom seal and the lower right bottom seal are made of an elastic material. The diaphragm assembly further includes a second compression pack communicated with the first compression pack. The second compression pack includes a non-closed annular main body and a sub-body for communicating the main body with the first compression pack and the main body. The main body is arranged in a ring shape below the lower left bottom seal and the lower right bottom seal. When filtering muddy water, the first compression pack bulges, squeezing one side or the periphery of the internal filter box, and the second compression pack bulges upward at the same time to lift the lower left bottom seal and the lower right bottom seal and exceed the lower end of the inner side wall of the internal filter box; when discharging slag, the lower left bottom seal and the lower right bottom seal are separated to form a slag discharge gap.

2. The environmentally friendly dredging device according to claim 1, characterized in that: The mud suction part includes a mud suction port with the front end located behind the cutter head, a first-stage rigid pipe fixedly installed on the cantilever, a first-stage pump installed on the first-stage rigid pipe and fixedly connected to the cantilever, a second-stage rigid pipe fixed to the hull, a first-stage flexible pipe connected between the first-stage rigid pipe and the second-stage rigid pipe, and a second-stage flexible pipe connected between the second-stage rigid pipe and the mud treatment device.

3. The environmentally friendly dredging device according to claim 1, characterized in that: The hoisting device includes a front pulley rotatably connected to the front end of the cantilever and a rear pulley at the rear end of the cantilever, a steel wire rope with the front end fixed to the cantilever and bypassing the front pulley and the rear pulley, and a hoist. The rear end of the steel wire rope is fixed to the hoist and at least part of it is wound around the hoist.

4. The environmentally friendly dredging device according to claim 2, characterized in that: The mud suction part further includes a second-stage pump arranged on the second-stage rigid pipe and fixed to the hull.

5. The environmentally friendly dredging device according to claim 4, characterized in that: When the dredging equipment stops working, the cantilever swings upward. At this time, the position of the mud suction port is higher than the position of the first-stage pump, the position of the first-stage pump is higher than the position of the first-stage flexible pipe, the first-stage flexible pipe is at the same height as the second-stage pump, and the height of the main body of the second-stage rigid pipe is higher than the second-stage pump.

6. The environmentally friendly dredging device according to claim 3, characterized in that: The height of the front pulley is always lower than the height of the rear pulley, and the height of the rear pulley is always higher than the height of the hoist.

7. The environmentally friendly dredging device according to claim 1, characterized in that: The vibrating screen is inclined. A coarse material discharge port is formed above its screen and is connected to the primary screening discharge port, and a fine screening discharge port is formed below its screen and is connected to the slurry storage tank assembly.

8. The environmentally friendly dredging device according to claim 1, characterized in that: The slurry storage tank assembly includes a slurry pump, the slurry pump is connected to the cyclone assembly, the upper end of the cyclone assembly is connected to the slurry storage tank assembly, and the lower end is connected to the dewatering screen.

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