CN206090672U - River silt dredging device - Google Patents

Abstract

The utility model discloses a river channel silt dredging device. The device comprises a cover body with an open lower end. A stirring shaft is rotatably installed on the cover body. One end of the stirring shaft extends into the cover body. The material channels at both ends of the shaft, a number of stirring blades are installed on the stirring shaft located in the housing, the stirring shaft protruding from the housing is connected to the submerged pipe through a coupling, and the top submerged pipe is connected to the separation box through the sewage suction pump. Including the box body, there are several parallel plastic pipes in the box body, the plastic pipes run through the box body, and the magnetic rods are inserted in the plastic tubes. One end of the box body is provided with a material inlet connected to the sewage suction pump. A heavy metal sludge outlet and a gravel outlet are respectively provided at the ends, and a screen is arranged obliquely above the heavy metal sludge outlet, and the lower end of the screen is located between the heavy metal sludge outlet and the gravel outlet. The device can sort heavy metals and sand and gravel, reduce the workload of dredging, and benefit the in-situ purification of river bottom water.

Description

A river silt dredging device

technical field

The utility model relates to a dredging device, more particularly to a river channel silt dredging device, which belongs to the technical field of environmental protection equipment.

Background technique

For a long time, river siltation has increasingly become a serious environmental protection problem. Due to the deposition of silt, it can seriously affect the normal performance of various functions such as flood control, drainage, irrigation, water supply, and navigation. Therefore, in order to restore the normal function of the river and promote rapid economic, environmental protection and green sustainable development, it is necessary to carry out dredging and dredging projects in time.

It is precisely because of such an important role of river dredging that people have conducted a lot of in-depth research on it, and developed a variety of dredging methods and devices, such as:

CN102121256A discloses a cutter suction sludge dewatering dredging ship, in which a sludge treatment device is installed in the hull, the sludge treatment device includes an extraction unit, a screening unit, a dehydration unit, a deodorization unit, a dehydration sludge collection unit, and a waste water treatment discharge unit, The self-priming sludge pump of the extraction unit is connected to the cutter suction head to protrude from the bottom of the ship, and the self-priming sludge pump is connected to the vibrating screen of the screening unit, and the vibrating screen is connected to the sand storage tank; the vibrating screen is connected to the belt filter press of the dewatering unit through pipelines. The belt filter press is connected to the wastewater treatment and discharge unit; the belt filter press is directly connected to the vibrating fluidized bed dryer, and the sludge outlet of the vibrating fluidized bed dryer is connected to the mud storage tank of the dewatered sludge collection unit; the vibrating fluidized bed drying The air outlet of the machine is connected with an activated carbon deodorizer.

CN102650137A discloses an underwater mud dredging device, which has a shell body that can sink into the bottom of the water. The shell body is provided with an opening accommodating space, and at least one suction pipe and a plurality of spray pipes are respectively penetrated and combined in the On the shell body, the plurality of spray pipes are evenly distributed around the shell body, and one end extends to the edge of the opening, and then a high-pressure water flow is introduced from a workstation to impact the bottom mud below the shell opening, making it appear Floating flow state, and the suction pipe is arranged at least in the central part of the shell body, which can maintain a suction force through the work station, so as to suck and recover the bottom sediment in the floating flow state to the work station, A counterweight body can be provided around the shell body as required, and the workstation can be set on a buoyant and dynamic vehicle as required, and a hanger is provided on the workstation, which can be connected and hung by a sling The shell body.

CN203091100U discloses a subsidence type dredging silt centrifugal dewatering machine, which consists of a drive wheel, a frame, a front tapered outer cylinder, a central rotating shaft, a material spray port, a rear rotating shaft, a backflow liquid port, a mud feeding nozzle, It is composed of separation liquid discharge port, spiral blade, body, mud cake discharge port, machine legs, filter residue extrusion port, and front rotating shaft; a spray port is provided at the connection between the central rotating shaft and the rear rotating shaft, which can effectively dredge The silt slurry is sprayed onto the wall of the front cone-shaped outer cylinder to facilitate the settlement of solid particles in the slurry on the cylinder wall, while the front rotating shaft, the central rotating shaft and the external helical blades of the rear rotating shaft can settle in the The solid particles on the wall of the front cone-shaped outer cylinder are pushed to the front-end filter residue extrusion port of the front-cone-shaped outer cylinder, and are extruded into mud under the action of centrifugal force and extrusion force, which has the ability to process a large amount of dredged sludge , high processing speed and low production cost.

As mentioned above, a variety of river silt dredging and treatment equipment are disclosed in the prior art, but these equipment still have certain defects, such as heavy workload, long construction period, secondary pollution, and during construction, Not only the heavy metal sediment is pumped out, but also a large amount of heavy metal-free sand and gravel is also pumped out, which is not conducive to the in-situ purification of the river bottom and increases the workload of dredging.

Therefore, for developing a new river channel silt dredging device, it not only has urgent research value, but also has good economic benefits and industrial application potential. This is the motivation and foundation for the completion of the utility model.

Utility model content

In order to overcome the defects of the prior art pointed out above, the inventor has conducted in-depth research on this, and after paying a lot of creative work, thus completed the utility model.

Specifically, the technical problem to be solved by this utility model is: to provide a river channel silt dredging device, which can effectively separate heavy metal-enriched silt and heavy metal-free massive sand in the river channel silt, reducing the dredging workload And it is beneficial to purify the water quality in situ at the bottom of the river.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is to provide a dredging device for river channel silt, the device for dredging river channel silt comprises a cover body with an open lower end, a stirring shaft is installed on the cover body, and the stirring shaft One end of the shaft extends into the housing, and the stirring shaft has a material channel extending axially and passing through both ends of the stirring shaft. A number of stirring blades are installed on the stirring shaft located in the housing. The stirring shaft of the cover body is connected to the submerged pipe through a coupling, and the submerged pipe at the top is connected to the separation box through the sewage suction pump. The separation box includes a box body, and the box body is provided with several parallel The plastic tube runs through the box, and a magnetic bar is inserted in the plastic tube. One end of the box is provided with a material inlet connected to the sewage suction pump, and the bottom of the box is in two A heavy metal sludge outlet and a sand and gravel outlet are respectively provided at the ends, and a screen is arranged obliquely above the heavy metal sludge outlet, and the lower end of the screen is located between the heavy metal sludge outlet and the sand and gravel outlet.

In the river channel silt dredging device of the present utility model, as an improvement, the silt outlet is connected to a first stop valve, and the gravel outlet is connected to a second stop valve.

In the river channel silt dredging device of the present utility model, as an improvement, an isolation ring is provided around the lower opening of the cover body, and the isolation ring is located on the outer periphery of the cover body. There is a depth locator.

In the river channel silt dredging device of the present utility model, as a further improvement, the stirring shaft is provided with a plurality of radially extending through holes.

In the river channel silt dredging device of the present utility model, as an improvement, the sewage suction pump is connected to the topmost submerged pipe through a tee, and the two outlets of the tee are respectively connected to one of the separating pipes. box, and a third shut-off valve is provided between each separation box and the tee.

The river channel silt dredging device of the present utility model achieves many beneficial effects through specific structural limitations and technical features, such as:

(1) Due to the design of the cover body containing the stirring shaft, the suitable depth of the cover body dives completely covers the inner area of the cover body to form a closed area, which avoids the secondary pollution of the river water in the process of cleaning up the sludge. Start stirring to stir up the silt and sand in the cover. The sewage suction pump generates negative pressure, and the material in the cover is transported to the separation box through the material channel on the stirring shaft. Under the action of the magnetic rod, some iron in the silt Products (especially the waste iron products that often contain a large amount in inland rivers) are adsorbed on the surface of plastic pipes, while massive sand and gravel are directly discharged into the river through the sand and gravel outlet, and silt is discharged into the river through the silt outlet In order to effectively sort the materials in the construction area, only the sediment containing heavy metals in the construction area will be cleaned, and the massive sand and stones without heavy metals will be discharged to the bottom of the river and continue to be kept at the bottom of the river to purify the water quality in situ.

(2) Since the isolation ring is equipped with a depth locator, the depth locator is connected to the control system, which can locate the diving depth of the cover and give data feedback to the operator, which is convenient for the operator to construct. At the same time, the isolation ring can connect the detection area with the stirring Region separation improves detection accuracy.

(3) Since the stirring shaft is provided with a number of radially extending through holes, the material around the stirring shaft can be sucked into the material channel, which prevents the end of the stirring shaft from being blocked and affecting the normal use of the utility model.

(4) Owing to being respectively provided with heavy metal silt outlet and gravel outlet at the bottom two ends of box body, and sieve cloth is arranged obliquely at the top of heavy metal silt outlet, thereby silt can be discharged from heavy metal silt outlet by sieve cloth; The gravel cannot pass through the screen, and can only be discharged from the gravel outlet at the other end, thus realizing the complete separation of silt and gravel.

As mentioned above, the utility model provides a river channel silt dredging device. The device has many advantages, so it can be applied to numerous river channel silt dredging, and has good application potential and industrialized production prospect.

Description of drawings

Fig. 1 is the structural representation of the river channel dredging equipment of the utility model embodiment;

Wherein, in FIG. 1 , each numeral signifies the following specific meanings, elements and/or components respectively.

In the figure: 1. Cover body, 2. Stirring shaft, 3. Material channel, 4. Stirring blade, 5. Through hole, 6. Submerged pipe, 7. Coupling, 8. Tee, 9. Sewage suction pump, 10. Box body, 11. Material inlet, 12. Gravel outlet, 13. Silt outlet, 14. First stop valve, 15. Plastic pipe, 16. Magnetic rod, 17. Third stop valve, 18. Isolation ring, 19, a depth locator, 20, a screen, 21, a second shut-off valve.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described. However, the use and purpose of these exemplary embodiments are only used to illustrate the utility model, and do not constitute any form of any limitation on the actual protection scope of the utility model, let alone limit the protection scope of the utility model thereto.

As shown in Figure 1, the utility model provides a kind of river channel silt dredging device, and described river channel silt dredging device mainly comprises the cover body 1 of lower end opening, and the stirring shaft 2 is installed on the cover body 1 rotation, and stirring shaft 2 vertical Setting, one end of the stirring shaft 2 extends into the cover body 1, the stirring shaft 2 has a material channel 3 extending in the axial direction and passing through both ends of the stirring shaft 2, a number of stirring blades 4 are installed on the stirring shaft 2 in the cover body 1, The stirring blade 4 at the lowermost end is flush with or slightly higher than the lower end surface of the cover body 1, and the stirring shaft 2 protruding from the cover body 1 is connected to the submerged pipe 6 through a collar 7, and the submerged pipe 6 is connected to the lower end surface of the cover body 1. The stirring shaft 2 is usually threaded, and a corresponding number of submerged pipes 6 are used according to the depth of the submersion required. The topmost submerged pipe 6 is connected to the separation box through the sewage suction pump 9. The separation box includes a box body 10 and a box body 10 There are several parallel plastic pipes 15 inside, the plastic pipes 15 run through the box body 10, the plastic pipes 15 are inserted with a magnetic bar 16, one end of the box body 10 is provided with a material inlet 11 connected to the sewage suction pump 9, and the box body 10 The bottom of the bottom is provided with a heavy metal sludge outlet 13 and a gravel outlet 12 at both ends, and a screen 20 is arranged obliquely above the heavy metal sludge outlet 13, and the lower end of the screen 20 is located between the heavy metal sludge outlet 13 and the gravel outlet. 12 outlets, the sludge outlet 13 is connected to the first cut-off valve 14, and the gravel outlet 12 is connected to the second cut-off valve 21.

When in use, the cover body 1 dives to a suitable depth to completely cover the inner area of the cover body 1 to form a closed area, thereby avoiding the secondary pollution of the river water in the process of cleaning up the silt; then, the stirring shaft 2 starts to stir, and the The silt and gravel in the cover body 1 are stirred up, and the sewage suction pump 9 generates negative pressure, and the material in the cover body 1 is transported to the separation box through the material channel 3 on the stirring shaft 2, and is discarded under the action of the magnetic rod 16. Iron products etc. are adsorbed on the surface of the plastic pipe 15, while sand and gravel and silt are screened through the screen 20, the sand and gravel are directly discharged into the river through the sand and gravel outlet 12, and the silt is discharged to the receiving container (not shown) through the silt outlet 13 Subsequent treatment (such as burial, sintering, etc.) is carried out in the construction area; thus, the materials in the construction area are effectively sorted, only the sediment containing heavy metals in the construction area is cleaned, and the sand and gravel without heavy metals are discharged to the bottom of the river And stay at the bottom of the river to purify the water quality in situ.

A spacer ring 18 is arranged around the lower opening of the cover body 1, and the spacer ring 18 is located at the outer periphery of the cover body 1. A depth locator 19 is arranged inside the spacer ring 18, and the depth locator 19 is connected with the control system to position the cover body 1. The submerged depth provides data feedback to the operator, which is convenient for the operator to construct. At the same time, the isolation ring 18 can separate the detection area from the stirring area, which improves the detection accuracy.

The stirring shaft 2 is provided with a plurality of radially extending through holes 5, which can suck the material around the stirring shaft 2 into the material channel 3, so as to prevent the end of the stirring shaft 2 from being blocked and affect the normal use of the utility model.

The sewage suction pump 9 is connected to the topmost submerged pipe 6 through the tee 8, and the two outlets of the tee 8 are respectively connected to a separation box, and a third stop valve 17 is provided between each separation box and the tee 8 to form The double stations work alternately. When a separation box is being maintained or iron is removed, the corresponding third shut-off valve 17 is closed, and the other corresponding third shut-off valve 17 is opened, so that the other separation box can be used normally, which improves the utility model. A new kind of productivity.

The utility model realizes the online separation of heavy metal-enriched silt and sand and gravel, and can also enrich waste iron products in the river without transporting them to the shore for washing and other operations, which simplifies the dredging process and avoids the need The secondary pollution of the river water reduces the labor intensity of the operators, and can effectively separate the silt and sand, which is beneficial to the in-situ purification of the river bottom.

It should be understood that these examples are only used to illustrate the utility model and are not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and/or variations to the utility model, and all these equivalent forms also fall within the scope of the appended rights of the application. within the scope of protection defined in the request.

Claims (5)

1. A river channel silt dredging equipment, said river channel silt dredging device comprises a cover body with an open lower end, said cover body is rotatably equipped with a stirring shaft, one end of said stirring shaft extends into said cover body, said stirring shaft There is a material channel extending axially and running through both ends of the stirring shaft, a number of stirring blades are installed on the stirring shaft located in the housing, and the stirring shaft protruding from the housing is connected to the bottom by a coupling The submerged pipe at the top is connected to the separation box through the sewage suction pump. The separation box includes a box body, and the box body is provided with several parallel plastic pipes, and the plastic pipes run through the box body , the plastic pipe is inserted with a magnetic rod, one end of the box is provided with a material inlet connected to the sewage suction pump, and the bottom of the box is respectively provided with a heavy metal sludge outlet and a gravel outlet at both ends, so A screen is arranged obliquely above the heavy metal sludge outlet, and the lower end of the screen is located between the heavy metal sludge outlet and the gravel outlet. 2. The river channel silt dredging equipment according to claim 1, characterized in that: the silt outlet is connected to a first stop valve, and the gravel outlet is connected to a second stop valve. 3. The river channel silt dredging equipment according to claim 1 or 2, characterized in that: a spacer ring is arranged around the lower opening of the cover body, the spacer ring is located on the outer periphery of the cover body, and the spacer ring Built-in depth locator. 4. The river channel silt dredging equipment according to claim 3, characterized in that: the stirring shaft is provided with a plurality of radially extending through holes. 5. The river channel silt dredging equipment according to claim 4, characterized in that: the sewage suction pump is connected to the topmost submerged pipe through a tee, and the two outlets of the tee are respectively connected to a separate box, and a third shut-off valve is provided between each separation box and the tee.