Impurity removal device for use in the operation of loading dredged sand from a dredger to a sand carrier

Abstract

The utility model relates to a kind of impurity removal devices for the dredger loading barge dredged sand to sand ship operation, including the sludge discharge pipe being set on dredger, the lower end of the sludge discharge pipe is set on dredger, the upper end of sludge discharge pipe is inclined to the above of the hold of sand ship, and the upper end of sludge discharge pipe is connected with impurity removal sieve body, and the end of impurity removal sieve body is inclined downward, and extend to the hold outside of sand ship;The impurity removal sieve body is also provided with sliding cable, and the pulling end of the sliding cable is set on the lower surface of sludge discharge pipe, and the included angle between sludge discharge pipe and impurity removal sieve body can be adjusted by sliding cable;The impurity removal sieve body includes screen section and slide section, and the bottom of screen section is paved with screen, and the bottom of slide section is slide, and the utility model is used for the impurity removal operation of the dredger loading barge dredged sand to sand ship, and the efficiency and quality of dredged sand on shore are greatly improved.

Description

Technical Field

[0001] This utility model relates to a debris removal device used for loading dredged sand from a dredger to a sand transport vessel, and belongs to the technical field of dredged sand conveying devices. Background Technology

[0002] River sand mining has gradually moved beyond purely engineering-oriented activities, placing greater emphasis on integrating it with river and waterway dredging, as well as wharf and anchorage dredging. Onshore treatment and utilization of dredged sand can effectively improve resource utilization efficiency. However, the dredged material pumped from dredgers to transport vessels often contains numerous impurities (such as pebbles, shells, garbage, and tree roots), resulting in low-quality dredged sand and causing numerous challenges to its comprehensive onshore utilization. Currently, in practical cases of comprehensive dredged sand utilization, dredgers generally do not take any impurity removal measures when loading dredged sand onto transport vessels, easily causing blockages in the transport vessels' drainage systems and affecting the efficiency of dredged sand onshore utilization. Furthermore, additional costs are required later for impurity removal at the storage yard to meet utilization requirements.

[0003] In summary, an adjustable impurity removal device was developed for dredging vessels to transfer dredged sand to sand transport vessels. Installing this device can significantly improve the efficiency and quality of dredged sand on land. Summary of the Invention

[0004] To address the aforementioned problems, this utility model discloses a debris removal device for loading dredged sand from a dredger onto a sand transport vessel. The specific technical solution is as follows: A debris removal device for loading dredged sand from a dredger to a sand transport vessel includes a dredging pipe (1) installed on the dredger (18). The lower end of the dredging pipe (1) is installed on the dredger (18), and the upper end of the dredging pipe (1) is inclined to the top of the hull of the sand transport vessel. A debris removal screen is connected to the upper end of the dredging pipe (1), and the end of the debris removal screen is inclined downward and extends beyond the hull of the sand transport vessel. The impurity removal screen body is also equipped with a sliding cable. The pulling end of the sliding cable is located on the lower surface of the mud discharge pipe (1). The angle between the mud discharge pipe (1) and the impurity removal screen body can be adjusted by the sliding cable. The impurity removal screen body includes a screen section and a slide plate section. The bottom of the screen section is covered with a screen mesh, and the bottom of the slide plate section is a slide plate.

[0005] Furthermore, both the screen section and the slide plate section have a cross-section that is an open-top "U"-shaped channel, with screen guardrails on both sides of the screen section and guardrails on both sides of the slide plate section.

[0006] Furthermore, the keel frame of the screen section includes a horizontal support (7), a vertical support (8) and a transverse support (9) arranged along the length of the channel. The horizontal support (7) includes four straight rods, two of which are located at the bottom of the screen guardrail and the other two are located at the top of the screen guardrail. The vertical support (8) includes several connecting rods that vertically connect the bottom and top straight bars of the screen guardrail on the same side; The horizontal support (9) includes several horizontal bars that are vertically connected to the bottom straight bars of the screen guardrail on both sides.

[0007] Furthermore, the screen at the bottom of the screen segment comprises two layers that are attached to each other. The lower layer of screen is fixed to the bottom of the screen segment, and the upper layer of screen is surrounded by a screen frame. Several outwardly extending protrusions are provided on the left and right sides of the screen frame. The bottom left and right sides of the screen segment are provided with slots, and the protrusions are engaged in the slots. The length of the slot is greater than the length of the protrusion, and the protrusion can move horizontally in the slot. The left and right sides refer to the two sides of the mortar flow direction on the screen section.

[0008] Furthermore, the screen mesh has square holes, and the protrusion moves within the slot by half the side length of the screen hole.

[0009] Furthermore, the left and right sides of the slide plate are provided with sliders extending towards the corresponding sides, the left and right sides of the screen section channel near the lower end and the left and right sides of the slide plate section channel are provided with sliding grooves, the sliding grooves are located near the bottom of their respective channels, the sliders are stuck in the sliding grooves, the upper and lower ends of the sliding grooves are closed ends, the sliders can be pulled and moved in the sliding grooves, and the slide plate is located above the screen.

[0010] Furthermore, the sliding cable includes a chuck (16) and a fixed hanger (14) set on the lower surface of the sludge discharge pipe (1). The chuck (16) is wound with a cable (15). One end of the cable (15) is released from the chuck (16) and passes around the fixed hanger (14) to connect to the position near the lower end of the impurity removal screen body. The tilt angle of the impurity removal screen body can be adjusted by adjusting the length of the released cable (15).

[0011] Furthermore, an anti-surge cover is provided on the outside of the connection between the sludge discharge pipe (1) and the impurity removal screen.

[0012] Furthermore, one or more vertical rotating rods (4) are fixedly welded to the edge of the anti-impact cover, and one or more fixed rods (2) are fixedly welded to the upper surface of the mud discharge pipe (1). Each vertical rotating rod (4) is connected to a fixed rod (2) through a rotating head (3).

[0013] Furthermore, the end of the vertical rotating rod (4) connected to the fixed rod (2) is a flat-shaped connector with a threaded hole. The rotating head (3) is a screw that passes through the threaded hole of the vertical rotating rod (4) and the fixed rod (2) connector, and an adjusting nut is threaded onto the screw.

[0014] The beneficial effects of this utility model are: This invention uses a double-layer screen. The lower layer is fixed, while the upper layer can be pulled and moved to adjust the size of the screen holes formed by the superposition of the two layers. This screen hole size is the actual filtration screen size for dredged sand. By adjusting the screen hole size according to the mud concentration and flow rate at the mud outlet, more dredged sand impurities can be separated while still meeting the required sieving speed for the water-sand mixture.

[0015] When the tilt angle of the impurity removal screen changes, the position of its lower end relative to the deck of the sand transport vessel will change. In order to allow the lower end of the impurity removal screen to be adjusted to be above the deck of the sand transport vessel, the sliding plate is designed to be pull-out, which can be shortened and extended according to the actual situation. This ensures that the large particles of impurities screened out do not fall into the hold of the sand transport vessel, but fall onto the deck through the sliding plate, thus achieving the separation of dredged sand from large particles of impurities.

[0016] This invention uses a rotating head to adjust the vertical screw rod, thereby adjusting the angle between the anti-surge cover and the mud outlet of the mud discharge pipe. This ensures that, under different flow conditions at the top mud outlet of the mud discharge pipe, the anti-surge cover can guide the water and sand mixture sprayed from the top mud outlet of the mud discharge pipe into the impurity removal screen body for sieving. Attached Figure Description

[0017] Figure 1 This is a side view of the present invention. Figure 2 This is a top view of the impurity removal screen body of this utility model. Figure 3 This is a cross-sectional schematic diagram of the upper layer of the screen of this utility model. Figure 4 This is a top view of the upper layer of the screen in this utility model. List of reference numerals in the attached drawings: 1—dump pipe, 2—fixed rod, 3—rotating head, 4—vertical rotating rod, 5—anti-impact cover, 6—impurity removal screen body, 7—horizontal support, 8—vertical support, 9—transverse support, 10—vertical screen, 11—horizontal screen, 12—vertical guard plate, 13—slide plate, 14—fixed hanging wheel, 15—cable, 16—locking wheel, 17—dump pipe control machine, 18—dredging vessel, 19—sand transport vessel, 20—slot, 21—protrusion, 22—screen frame. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0019] Combined with appendix Figure 1 As can be seen, this utility model is installed on a dredger 18 to transfer dredged sand from the dredger 18 to the hold of a sand transport vessel 19, and to remove large particles of debris from the dredged sand. In use, the sand transport vessel 19 is moored next to the dredger 18, with the discharge pipe 1 suspended above it. The dredged sand discharged from the discharge pipe 1 falls onto the impurity removal screen, and then falls through the screen into the hold of the sand transport vessel 19. Large particles of debris fall onto the deck of the sand transport vessel 19 via a sliding plate.

[0020] This utility model includes a mud discharge pipe, a dirt removal screen body, and an anti-surge cover, as well as a sliding cable for changing the inclination angle of the dirt removal screen body. The structure of this utility model will be described and introduced below in specific embodiments: The lower end of the dredging pipe 1 is mounted on the dredger 18, and the upper end of the dredging pipe 1 slopes upwards to the top of the sand transport vessel's hold. A debris removal screen 6 is connected to the upper end of the dredging pipe 1. The end of the debris removal screen 6 slopes downwards, extending beyond the hold of the sand transport vessel (generally extending above the deck to accumulate large particles of debris on the deck for later removal). In use, the sand transport vessel is moored alongside the dredging vessel, with its hold positioned below the debris removal screen 6. Dredged sand falling through the debris removal screen 6 falls directly into the hold of the sand transport vessel. The dredging pipe 1, the dredging vessel 18, and their interconnected arrangement are all existing technologies. The dredging pipe 1 is equipped with a dredging pipe control unit 17, and the dredging pipe 1 is a dedicated channel for discharging dredged sand from the dredging vessel 18.

[0021] The impurity removal screen body 6 is the core design structure of this patent, including a screen section and a sliding plate section. The bottom of the screen section is covered with screen mesh, and the bottom of the sliding plate section is a sliding plate. The cross-section of both the screen section and the sliding plate section is a U-shaped channel with an open top. The screen section has screen guardrails on both sides, and the sliding plate section has guardrails on both sides.

[0022] Combined with appendix Figure 1 and 2 As can be seen, the left and right sides of the screen section channel are screen guardrails composed of vertical screens 10, while the two sides of the slide section channel are guardrails composed of vertical guard plates 12. A horizontal screen 11 is laid at the bottom of the screen section channel.

[0023] The screen section is relatively long, and its keel frame includes horizontal supports 7, vertical supports 8, and transverse supports 9 arranged along the length of the channel. The horizontal support 7 includes four straight rods, two of which are located on the bottom two sides of the screen guardrail, and the other two are located on the top of the screen guardrail. The bottom and top two straight rods on the same side form the upper and lower sides of the screen guardrail. The screen guardrail is fixed to the upper and lower straight rods to form the screen guardrail. Several dispersed vertical connecting rods are also provided to connect the upper and lower straight rods. Several connecting rods form the vertical support 8, which plays a protective role for the screen guardrail and prevents it from being deformed by the impact of dredged sand.

[0024] To prevent deformation of the screen at the bottom of the screen section channel, a horizontal support 9 is installed below the bottom screen. The horizontal support 9 includes several horizontal bars that are vertically connected to the bottom straight bars of the screen guardrails on both sides.

[0025] The following describes the structure for adjusting the screen mesh size: The screen mesh at the bottom of the screen section consists of two layers, one attached to the other. Both layers are located above the crossbar, which provides support for both layers to prevent deformation from the dredged sand. The lower layer of screen mesh is fixed to the bottom of the screen section, located on the transverse support 9, combined with... Figure 3 and 4 As can be seen, a screen frame 22 is provided around the top layer of screen, and several outwardly extending protrusions are provided on the left and right sides of the screen frame 22. The bottom left and right sides of the screen section are provided with slots 20, and the protrusions 21 are locked in the slots 20. The length of the slots 20 is greater than the length of the protrusions 21, and the protrusions 21 can move horizontally in the slots 20. The left and right sides refer to the two sides of the mortar flow direction on the screen section.

[0026] The screen mesh has square holes, and the protrusion moves within the slot by half the side length of the screen hole. When adjusting the size of the screen holes, pushing the upper screen mesh causes it to move, changing the size of the overlapping screen holes. The maximum adjustment is exactly half the size of the screen hole between the upper and lower screen meshes.

[0027] To adapt to different usage scenarios, the slide plate 13 is also designed as a pull-out and movable structure. Sliders extending towards the corresponding sides are provided on the left and right sides of the slide plate section channel near the lower end. Slide grooves are provided on the left and right sides of the screen section channel near the bottom of their respective channels. The slides are engaged in the slide grooves, which are closed at both ends to prevent them from slipping out. The slides can be pulled out and moved within the slide grooves. When the slide plate is pushed up and overlaps the screen section, it is positioned above the screen. The maximum downward stroke of the slide plate is until it just aligns with the screen section.

[0028] The specific structure of the sliding cable is as follows: it includes a retaining wheel 16 and a fixed hanging wheel 14 set on the lower surface of the sludge discharge pipe 1. The retaining wheel 16 is wound with a cable 15. One end of the cable 15 is released from the retaining wheel 16, passes around the fixed hanging wheel 14, and connects to a position near the lower end of the impurity removal screen body 6. The tilt angle of the impurity removal screen body 6 is adjusted by adjusting the length of the released cable 15. For ease of operation, the retaining wheel 16 is usually located near the bottom of the sludge discharge pipe 1, adapted to human height, and easy for a person to operate while standing. The height of the fixed hanging wheel 14 is usually near the middle of the sludge discharge pipe 1. To facilitate fastening the cable 15, a cable rod is set across the top of the impurity removal screen body 6. The cable rod is fixed to the impurity removal screen body 6, and the cable 15 is fastened in the cable rod. The cable rod is usually located at the downstream end of the screen section. Through the three points of retaining wheel 16, fixed hanging wheel 14, and cable rod, the cable is taut and opened, forming a pulley system structure, which can adjust the tilt angle of the impurity removal screen body 6 by releasing and retracting the cable.

[0029] The specific structure of the anti-surge cover 5 is described below: An anti-surge cover 5 is installed on the outside of the connection between the sludge discharge pipe 1 and the impurity removal screen body 6. The function of the anti-surge cover 5 is to prevent the dredged sand conveyed by the sludge discharge pipe 1 from being directly swept away by inertia. The anti-surge cover 5 can block the dredged sand from being swept away by inertia, change its flow direction, and ensure that all the dredged sand can enter the impurity removal screen body 6.

[0030] Based on the flow rate of dredged sand and the inclination angle of the impurity removal screen 6, a mechanism for adjusting the angle of the anti-scouring cover 5 is designed to adjust the angle of the anti-scouring cover 5 to the most suitable position: one or more vertical rotating rods 4 are fixedly welded to the edge of the anti-scouring cover 5, and one or more fixed rods 2 are fixedly welded to the upper surface of the sludge discharge pipe 1. Each vertical rotating rod 4 is connected to a fixed rod 2 through a rotating head 3. The end of the vertical rotating rod 4 connected to the fixed rod 2 is a flat-shaped connector with a threaded hole. The rotating head 3 is a screw that passes through the threaded hole of the connector between the vertical rotating rod 4 and the fixed rod 2, and an adjusting nut is threaded onto the screw. By loosening the adjusting nut and rotating the vertical rotating rod 4, the anti-scouring cover 5 is rotated to face the direction of the direct flow of sludge and sand from the sludge discharge pipe, and the lower outlet of the anti-scouring cover 5 is aligned with the impurity removal screen 6. The anti-scouring cover 5 has a hemispherical structure, or flat plates on both sides and a semi-circular arc plate in the middle, forming a turning channel. The opening side of the anti-scouring cover 5 faces the sludge discharge pipe and the impurity removal screen 6.

[0031] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0032] The meaning of "and / or" as used in this application includes situations where each exists alone or both exist simultaneously.

[0033] The term "connection" as used in this application can mean a direct connection between components or an indirect connection between components through other components.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A debris removal device for loading dredged sand from a dredger onto a sand transport vessel, characterized in that, Includes a mud discharge pipe (1) installed on a dredger (18), the lower end of which is installed on the dredger (18), the upper end of which is inclined to the top of the hull of the sand transport vessel, and a sludge removal screen body connected to the upper end of the mud discharge pipe (1). The end of the sludge removal screen body is inclined downward and extends beyond the hull of the sand transport vessel. The impurity removal screen body is also equipped with a sliding cable. The pulling end of the sliding cable is located on the lower surface of the mud discharge pipe (1). The angle between the mud discharge pipe (1) and the impurity removal screen body can be adjusted by the sliding cable. The impurity removal screen body includes a screen section and a slide plate section. The bottom of the screen section is covered with a screen mesh, and the bottom of the slide plate section is a slide plate.

2. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 1, characterized in that, Both the screen section and the slide plate section have a cross-section that is an open "U"-shaped channel. The screen section has screen guardrails on both sides, and the slide plate section has guardrails on both sides.

3. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 2, characterized in that, The keel frame of the screen section includes a horizontal support (7), a vertical support (8) and a transverse support (9) arranged along the length of the channel. The horizontal support (7) includes four straight rods, two of which are located at the bottom of the screen guardrail and the other two are located at the top of the screen guardrail. The vertical support (8) includes several connecting rods that vertically connect the bottom and top straight bars of the screen guardrail on the same side; The horizontal support (9) includes several horizontal bars that are vertically connected to the bottom straight bars of the screen guardrail on both sides.

4. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 2, characterized in that, The bottom of the screen segment includes two layers that are attached to each other. The lower layer of screen is fixed to the bottom of the screen segment, and the upper layer of screen has a screen frame around its perimeter. Several outwardly extending protrusions are provided on the left and right sides of the screen frame. The bottom of the screen segment has slots on the left and right sides, and the protrusions are engaged in the slots. The length of the slot is greater than the length of the protrusion, and the protrusion can move horizontally in the slot. The left and right sides refer to the two sides of the mortar flow direction on the screen section.

5. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 4, characterized in that, The screen mesh has square holes, and the protrusion moves within the slot by half the side length of the screen hole.

6. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 1, characterized in that, The left and right sides of the slide plate are provided with sliders extending towards the corresponding sides. The left and right sides of the screen section channel near the lower end and the left and right sides of the slide plate section channel are provided with sliding grooves. The sliding grooves are located near the bottom of their respective channels. The sliders are stuck in the sliding grooves. The upper and lower ends of the sliding grooves are closed ends. The sliders can be pulled and moved in the sliding grooves. The slide plate is located above the screen.

7. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 1, characterized in that, The sliding cable includes a chuck (16) and a fixed hanger (14) set on the lower surface of the mud discharge pipe (1). The chuck (16) is wound with a cable (15). One end of the cable (15) is released from the chuck (16) and passes around the fixed hanger (14) to connect to the position of the impurity removal screen near the lower end. The tilt angle of the impurity removal screen can be adjusted by adjusting the length of the released cable (15).

8. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 1, characterized in that, An anti-surge cover is provided on the outside of the connection between the mud discharge pipe (1) and the impurity removal screen.

9. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 8, characterized in that, The edge of the anti-impact cover is fixedly welded with one or more vertical rotating rods (4), and the upper surface of the mud discharge pipe (1) is fixedly welded with one or more fixed rods (2). Each vertical rotating rod (4) is connected to a fixed rod (2) through a rotating head (3).

10. The impurity removal device for loading dredged sand from a dredger to a sand transport vessel according to claim 9, characterized in that, The end of the vertical swivel (4) connected to the fixed rod (2) is a flat-shaped connector with a threaded hole. The rotating head (3) is a screw that passes through the threaded hole of the vertical swivel (4) and the fixed rod (2) connector, and an adjusting nut is threaded onto the screw.

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