CN210288540U - Underwater sand material mixing and conveying device for dredger - Google Patents

Abstract

The utility model relates to an underwater sand mixing and conveying device for a dredger, which belongs to the technical field of dredging engineering and comprises a first cavity, a second cavity, a third cavity, a first pipeline and a second pipeline, wherein the inner side of the sand inlet II at the top of the first cavity is provided with a first control board and a second control board which form a split arrangement, and the first control board and the second control board are rotated to be split from the middle split position of the first control board and the second control board to the front and back positions; the first control plate and the second control plate are both arc-shaped thin-wall structures, arc openings face downwards, a pair of lifting lugs are arranged at the axial two ends of the first control plate and the second control plate close to the middle of the two control plates, the two lifting lugs at the same end are connected with corresponding driving devices through a chain or a steel wire rope, a through hole for the two lifting lugs to penetrate through is formed in the top of the cavity, and guide grooves used for limiting the corresponding chain or the steel wire rope to move directionally are formed in the outer side walls of the cavity. The utility model discloses can adjust the mixed effect of sand material, reduce sand material choking phenomenon, realize the accurate hydraulic reclamation operation of dredger.

Description

Underwater sand material mixing and conveying device for dredger

Technical Field

The utility model belongs to the technical field of the dredging engineering, especially, relate to a dredger is with sand material under water mixes and conveyor.

Background

With the improvement of modern construction technology and design level, large-scale development and utilization of rivers and ports are carried out by human beings, and dredging engineering ships play an important role in the construction of navigation channels and ports. The cutter suction dredger is a main ship for dredging construction, and can convey the cutting rock soil of a reamer to a designated position. On the cutter suction dredger, a special mud pipe is configured for conveying rock soil excavated by the reamer. The rock soil and water are mixed to form slurry, and the slurry reaches a specified position by the action of a slurry pump, namely the hydraulic filling operation of the cutter suction dredger.

The hydraulic reclamation area has a certain distance from the hull, and the larger the mud pump action, the larger the distance. Therefore, the cutter suction dredger can work on a specified hydraulic filling area in a place which is several kilometers away, and other engineering ships do not have the capacity. The conventional hydraulic filling operation of the cutter suction dredger needs a reamer at the front end to continuously excavate rock soil, and the excavated rock soil is used as rock (soil) materials. When the hydraulic reclamation operation site has special requirements, such as specific sand (soil) is required, rock and soil in the excavation operation area of the reamer can not meet the requirements of the sand (soil) generally, so the hydraulic reclamation operation is difficult to carry out, and the underwater sand material mixing and conveying device for the dredger needs to be developed.

On-land sand mixing devices are common, and a mixer truck is one of the devices, but the sand mixing environment of the devices is difficult to apply only in land engineering, at sea or underwater. The water content of the mixed sand required by land engineering is far lower than that of dredging engineering, the former is 'much sand and little water', and the latter is just the opposite. The underwater sand mixing device not only needs to consider the flow field condition in the sand mixing process, but also needs to consider the concentration condition of mortar and also needs to consider the conveying effect.

Disclosure of Invention

Problem to prior art existence, the utility model provides a simple structure, be convenient for realize, low in manufacturing cost, economical and practical and efficiency of construction is high for dredger sand material mix under water and conveyor.

The utility model is realized in such a way that the underwater sand mixing and conveying device for the dredger comprises a first cavity, a second cavity, a third cavity, a first pipeline and a second pipeline, the second cavity is positioned right above the first cavity, the third cavity is positioned right above the second cavity, a fourth outlet at the bottom of the third cavity is communicated with a third inlet at the top of the second cavity, a third outlet at the bottom of the second cavity is communicated with a second sand inlet at the top of the first cavity, the first pipeline is connected with the first side water inlet of the first cavity, the first outlet of the first cavity is connected with the second pipeline, the first inlet is opposite to the first outlet, the inner side of the second sand inlet at the top of the first cavity is provided with an opening and closing mechanism for adjusting the sand falling amount, the opening and closing mechanism comprises a first control plate and a second control plate which are arranged in a split mode, and the first control plate and the second control plate rotate to open and close from a middle closing position between the first control plate and the second control plate to the front and back.

In the above technical solution, preferably, the first control plate and the second control plate are both arc-shaped thin-walled structures, and the arc-shaped openings face downward.

In the above technical solution, preferably, one side of the first control panel is hinged to the first cavity, and one side of the second control panel is hinged to the first cavity.

In the above technical solution, it is further preferable that one side of the first control plate has a first shaft, the first control plate is hinged to the first cavity through the first shaft, one side of the second control plate has a second shaft, and the second control plate is hinged to the first cavity through the second shaft.

In the above technical solution, preferably, the opening and closing of the opening and closing mechanism is driven by a driving device, and the driving device is a hydraulic mechanism or a motor.

In the above technical solution, it is further preferable that a pair of lifting lugs is respectively disposed at two axial ends of the first control plate and the second control plate near the middle of the two control plates at the involution position, and the two lifting lugs at the same end are connected to corresponding driving devices through a chain or a steel wire rope to control the first control plate and the second control plate to open and close synchronously.

In the above technical solution, it is further preferable that through holes for the two lifting lugs to pass through are respectively formed at the top of the cavity directly above the two lifting lugs at the same end, and each through hole is in a shape of a dovetail.

In the above technical solution, it is further preferable that guide grooves for limiting the directional movement of the corresponding chain or wire rope are provided on the outer side wall of the cavity on the same side as the two lifting lugs on the same end, the lower portion of each guide groove is in a "triangle", and each guide groove is surrounded by two guard plates.

In the above technical solution, it is further preferable that the device further includes a flat plate, the flat plate is located outside the three bottoms of the cavity, the driving device is installed on the flat plate, guide holes for passing through corresponding chains or steel cables are provided on the flat plate along the extending direction of the top end of each guide groove, and the chains or steel cables passing through the guide holes are connected to the corresponding driving device by passing around pulleys.

In the above technical scheme, preferably, the second cavity is in an inverted cone shape, the side wall of the second cavity is further provided with water supplementing holes, and the water supplementing holes are provided with one or more than one water supplementing holes.

Compared with the prior art, the utility model has the advantages and positive effect be:

by adopting the technical scheme, compared with the prior art, the underwater sand mixing and conveying device can prepare special mortar, thereby realizing the accurate hydraulic fill operation of the dredger, increasing the construction diversity of the dredger, and being more environment-friendly and energy-saving; the utility model discloses a sand material mixes and conveyor under water can adjust the mixed effect of mortar through control panel, has reduced the stifled mouth phenomenon to simple structure can obviously reduce material cost and cost of labor.

Drawings

Fig. 1 is a schematic structural view of an underwater sand mixing and conveying device for a dredger according to an embodiment of the present invention;

FIG. 2 is a schematic view of the half-section configuration of FIG. 1;

fig. 3 is a schematic structural view of the upper part of the underwater sand mixing and conveying device for the dredger according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first cavity of the underwater sand mixing and conveying device for the dredger according to the embodiment of the present invention;

fig. 5 is a schematic structural view of a 0-degree opening and closing mechanism at a first cavity of an underwater sand mixing and conveying device for a dredger according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a 45-degree opening and closing mechanism at a first cavity of the underwater sand mixing and conveying device for the dredger according to the embodiment of the present invention;

fig. 7 is a schematic structural view of a 90-degree opening and closing mechanism at a first cavity of an underwater sand mixing and conveying device for a dredger according to an embodiment of the present invention.

In the figure: 1. an underwater sand mixing and conveying device for a dredger comprises a first cavity, a second cavity, a third cavity, a first cavity, a second cavity, a first pipeline, a 6 pipeline, a second pipeline, a 7 pipeline, a third pipeline, a 8 pipeline, a fourth pipeline, a 9 pipeline, a first motor, a 10 motor, a second motor, a 11 box, a first box, a 12 box, a second box, a 13 pulley, a first pulley, a 14 pulley, a second pulley, a 15 guide hole, a first guide hole, a 16 guide hole, a second guide hole, a 17 control plate, a first control plate, a second control plate, a 19 shaft, a second shaft, a 21 lifting lug, a first lifting lug, a second lifting lug, a 23 lifting lug, a third lifting lug, a fourth lifting lug, a 25 guide groove, a first guide groove, a 26 guide groove, a second guide groove, a 27 guide groove, a third guide groove, a 28, a guide groove, a fourth guide plate, a 29, The first involution side 43, the second involution side 44, the first through hole 45 and the second through hole.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:

in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "a", "an", "two", "three", "four" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1 to 7, the present embodiment provides an underwater sand mixing and conveying device for a dredger, which includes a first cavity 2 and a second cavity 3, the sand-removing device comprises a cavity III 4, a pipeline I5 and a pipeline II 6, the cavity II 3 is located right above the cavity I2, the cavity III 4 is located right above the cavity II 3, a bottom outlet IV 41 of the cavity III 4 is communicated with a top inlet III 38 of the cavity II 3, a bottom outlet III 39 of the cavity II 3 is communicated with a top sand inlet II 36 of the cavity I2, the pipeline I5 is connected with a side water inlet I35 of the cavity I2, an outlet I37 of the cavity I2 is connected with the pipeline II 6, the inlet I35 is opposite to the outlet I37, an opening and closing mechanism for adjusting the sand falling amount is arranged on the inner side of the top sand inlet II 36 of the cavity I2, the opening and closing mechanism comprises a control board I17 and a control board II 18 which are oppositely arranged, and the control board I17 and the control board II 18 are rotatably opened and closed from the middle involutory position of the control.

The first control plate 17 and the second control plate 18 are both arc-shaped thin-wall structures, and arc-shaped openings face downwards.

One side 17 of the control plate I is hinged with the cavity I2, and one side 18 of the control plate II is hinged with the cavity I2.

One side 17 of the first control plate is provided with a first shaft 19, the first control plate 17 is hinged with the first cavity 2 through the first shaft 19, one side 18 of the second control plate is provided with a second shaft 20, and the second control plate 18 is hinged with the first cavity 2 through the second shaft 20.

The opening and closing of the opening and closing mechanism is driven by a driving device which is a hydraulic mechanism or a motor.

A pair of lifting lugs is respectively arranged at the two axial ends of the control plate I17 and the control plate II 18 close to the middle of the two control plates, the two lifting lugs at the same end are connected with corresponding driving devices through a chain or a steel wire rope, the two driving devices synchronously work, the control plate I17 and the control plate II 18 are synchronously opened and closed, and the accurate control of the control plate I17 and the control plate II 18 is realized.

The top of the cavity 2 directly over the two lifting lugs at the same end is provided with through holes for the two lifting lugs to pass through, and each through hole is in a dovetail shape.

The outer side walls of the cavity II 3 at the same side with the two lifting lugs at the same end are respectively provided with a guide groove for limiting the directional movement of a corresponding chain or a steel wire rope, the lower part of each guide groove is triangular, and each guide groove is surrounded by two guard plates.

The device also comprises a flat plate 34, the flat plate 34 is positioned at the outer side of the three bottoms of the cavity, the driving device is arranged on the flat plate, guide holes for corresponding chains or steel wire ropes to pass through are arranged on the flat plate along the extending direction of the top end of each guide groove, and the chains or the steel wire ropes passing through the guide holes are connected with the corresponding driving device by winding pulleys.

The second cavity 3 is in an inverted cone shape, the side wall of the second cavity 3 is also provided with one or more water replenishing holes 33, and the water replenishing holes 33 are arranged.

The specific structure and assembly of this embodiment is detailed as follows:

as shown in fig. 1: the utility model provides a dredger is with mixed and conveyor 1 of sand material under water, includes cavity one 2, cavity two 3, cavity three 4, pipeline one 5 and pipeline two 6, and the bottom outlet of cavity three 4 is four 41 and the top inlet of cavity two 3 is three 38 and is linked together, and the bottom outlet of cavity two 3 is three 39 and the top sand material entry two 36 of cavity one 2 are linked together, and pipeline one 5 is connected with the lateral part water inlet one 35 of cavity one 2, and pipeline two 6 is connected with the export one 37 of cavity one 2.

As shown in fig. 2, the chamber three 4 has an inlet four 40 and an outlet four 41, and the chamber three 4 is cylindrical, i.e. the inlet four 40 and the outlet four 41 have the same shape. To facilitate the ingress of sand, the area of inlet port four 40 may also be larger than the area of outlet port four 41. In operation, sand enters chamber three 4 from inlet four 40 and then enters chamber two 3 via outlet four 41.

The second chamber 3 has an inlet third 38 and an outlet third 39, and the second chamber 3 is in an inverted cone shape, that is, the area of the inlet third 38 is significantly larger than that of the outlet third 39. During operation, sand enters chamber two 3 from inlet three 38 and then enters chamber one 2 via outlet three 39. It is worth noting that the sand material is primarily mixed in the cavity II 3, the cavity II 3 is inverted-cone-shaped, so that the sand material is conveniently concentrated, and meanwhile, the sand and water are conveniently mixed to form the mortar.

The first cavity 2 is provided with a first inlet 35, a second inlet 36 and a first outlet 37, water sequentially enters the first cavity 2 from the first inlet 35 through a third pipeline 7 and a first pipeline 5 in the construction process, sand enters the first cavity 2 from the second inlet 36, the sand and the water are mixed and then leave the first cavity 2 from the first outlet 37, and then the sand and the water are sequentially transported through a second pipeline 6 and a fourth pipeline 8 to finally reach a hydraulic filling operation area.

During operation, sand enters the cavity III 4 from the inlet IV 40, then enters the cavity II 3 through the outlet IV 41, and further enters the cavity I2 through the outlet III 39, and is fully mixed with water in the cavity I2 to form the required mortar.

The first pipeline 5 is a water inlet variable-section pipeline, the water inlet of the pipeline is circular, and the water outlet of the pipeline is the same as the first inlet 35 of the first cavity 2. The first pipeline 5 is also a transitional pipeline, and the mixing effect of sand and water can be improved through the change of the section, so that the mortar concentration can be accurately controlled. The second pipeline 6 is a water outlet variable-section pipeline, the water outlet of the pipeline is circular, and the water inlet of the pipeline is the same as the first outlet 37 of the first cavity 2. The second pipeline 6 is also a transitional pipeline, and the mixed mortar can be conveyed to a specified position through the change of the section, so that the accurate construction is facilitated.

The outlet three 39 of the chamber two 3 and the inlet two 36 of the chamber one 2 have the same shape, and can be welded together or connected through bolts. When the two are connected through the bolts, the flange with the connecting function is arranged at the second inlet 36 of the first cavity 2, the flange with the connecting function is arranged at the third outlet 39 of the second cavity 3, and the flange at the second inlet 36 and the flange at the third outlet 39 are also in the same shape, are matched with each other and are connected through the bolts.

The outlet four 41 of the chamber three 4 and the inlet three 38 of the chamber two 3 have the same shape, and the outlet four 41 and the inlet three 38 can be welded or connected through bolts. When the two are connected by bolts, the outlet four 41 and the inlet three 38 are provided with respective mutually matched flanges which are connected by bolts.

The side wall of the second cavity 3 is also provided with a plurality of water replenishing holes 33, and the water replenishing holes 33 are provided. During operation, water flow can enter the second cavity 3 through the water replenishing holes 33. In the operation process, the mortar formed by the cavity I2 leaves the cavity I2, the strong water flow acts on the inlet II 36 of the cavity I2 to form a low-pressure area, the reduction of the pressure also causes the reduction of the water surface in the cavity II 3, when the water surface in the cavity II 3 is reduced, the mixing effect of the sand and the water is gradually reduced, and even the problem that the sand is difficult to fall is caused. The function of the water replenishing holes 33 is to compensate for the adverse effect of the water level lowering.

After the first cavity 2, the second cavity 3 and the third cavity 4 are connected, the three form a communicating body, and sand enters the second cavity 3 from the third cavity 4 and then enters the first cavity 2. Since the inlet four 40 and the outlet four 41 of the chamber three 4 have the same shape, sand hardly blocks in the chamber three 4, but the chamber two 3 is in an inverted cone shape, so that sand may block in the chamber two 3, thereby causing a problem that sand cannot enter the chamber one 2.

Cohesion, also known as "pseudo-cohesion", and internal friction, exist between the sand particles. When the water content of the sand material is not enough, the sand material forms a clay effect similar to clay, and the mixing effect of the sand and the water can be influenced. The essence of the clay effect of the sand material is that the water permeability of the sand material is reduced, and water cannot enter the sand material from the outside of the sand material, so that the hardening phenomenon of the sand material is caused, and the mixing of the sand and the water cannot be accurately controlled.

After the sand material is hardened, the sand material can also form the property similar to stones and can bear certain pressure and tension. Specifically, after the sand material is blocked in the second cavity 3, the blocked nature is that the blocked sand material forms static equilibrium with the structure at the third outlet 39 of the second cavity 3. Once the static balance is formed, the subsequent sand material can be more seriously blocked, and an opening and closing mechanism for controlling the opening is required to be arranged in the cavity I2 for breaking the static balance. The opening and closing mechanism is utilized to continuously break the static balance to be formed, so that the possibility of silting of the sand in the cavity II 3 can be avoided.

As shown in FIG. 2, the second inlet 36 of the first chamber 2 has a first control plate 17 and a second control plate 18 inside. The first control plate 17 is provided with a first shaft 19, the second control plate 18 is provided with a second shaft 20, the first control plate 17 is hinged with the first cavity 2 through the first shaft 19, and the second control plate 18 is hinged with the first cavity 2 through the second shaft 20. As shown in fig. 5, in addition, the control panel one 17 has a first lifting lug 21 and a second lifting lug 22 at two axial ends close to the involution side one 42, the control panel two 18 has a third lifting lug 23 and a fourth lifting lug 24 at two axial ends close to the involution side two 43, the first lifting lug 21, the second lifting lug 22, the third lifting lug 23 and the fourth lifting lug 24 are respectively used for connecting a chain or a steel wire rope controlled at a far end with the two control panels, and the opening and closing degree of the control panel one 17 and the control panel two 18 is controlled through the chain or the steel wire rope. The opening and closing of the control panel I17 and the control panel II 18 can break the static balance possibly formed by the sand, and the possibility of silting up of the sand in the cavity II 3 is avoided.

In a preferred example, as shown in fig. 4, the top of the first cavity 2 is provided with a second inlet 36, and a first through hole 44 and a second through hole 45 for the two lifting lugs to pass through are arranged on two sides of the second inlet 36 and right above the two lifting lugs at the same end. Through-hole 44 is "forked tail" form, and through-hole two 45 is symmetrical arrangement with through-hole 44, also is "forked tail" form, and the through-hole of "forked tail" form is convenient for chain or wire rope's transfer, the better opening and shutting of control panel. In the process of controlling the opening and closing of the control plate I17 and the control plate II 18, the lifting lug I21 and the lifting lug III 23 penetrate through the through hole I44, and the lifting lug II 22 and the lifting lug IV 24 penetrate through the through hole II 45.

As shown in fig. 1 and 3, the outer side wall of the second cavity 3 on the same side as the first through hole 44 or the second through hole 45 is provided with a guide groove for limiting the directional movement of the corresponding chain or steel wire rope, the outer side wall of the second cavity 3 is provided with a first guide groove 25, a second guide groove 26, a third guide groove 27 and a fourth guide groove 28, the first guide groove 25 is connected with the third guide groove 27, and the second guide groove 26 is connected with the fourth guide groove 28. The guide groove space formed by the first guide groove 25 and the third guide groove 27 is used for directional movement of one of the chain or the steel wire rope, the third guide groove 27 is triangular, the width of the lower end of the third guide groove 27 is matched with the length of the first through hole 44, and opening and closing of the control panel are better controlled. Similarly, the guide groove space formed by the second guide groove 26 and the fourth guide groove 28 is used for directional movement of another chain or a steel wire rope, the fourth guide groove 28 is triangular, the width of the lower end of the fourth guide groove 28 is matched with the length of the second through hole 45, and opening and closing of the control panel are better controlled. The guide groove formed by the first guide groove 25 and the third guide groove 27 is formed by a first protection plate 29 and a second protection plate 30, and the two protection plates can effectively protect a chain or a steel wire rope. Similarly, the guide groove formed by the second guide groove 26 and the fourth guide groove 28 is surrounded by the third guard plate 31 and the fourth guard plate 32, and the two guard plates can effectively protect the chain or the steel wire rope.

The chain or the steel wire rope for controlling the opening and closing of the control panel I17 and the control panel II 18 can be controlled by a hydraulic mechanism or a motor. Taking a motor as an example for explanation, specifically, the first lifting lug 21 and the third lifting lug 23 are connected to one end of a chain or a steel wire rope at the same time, the first motor 9 is connected to the other end of the chain or the steel wire rope, and when the motor is driven, the first control board 17 and the second control board 18 are synchronously opened and closed; the second lifting lug 22 and the fourth lifting lug 24 are simultaneously connected to one end of another chain or a steel wire rope, the second motor 10 is connected to the other end of the chain or the steel wire rope, and when the motor drives, the first control plate 17 and the second control plate 18 are synchronously opened and closed. The silting risk of the sand can be avoided.

In a preferred embodiment, as shown in fig. 2 and 3, the device further comprises a plate 34, the plate 34 being located outside the outlet four 41. The flat plate 34 can also be used as a maintenance platform, and a guardrail with a protection function can be arranged on the outer side of the flat plate. The first motor 9 and the second motor 10 are installed on the flat plate 34, the first motor 9 is located above the first guide groove 25, the first guide hole 15 is formed in the flat plate 34 in the extending direction of the top end of the first guide groove 25, the second motor 10 is located above the second guide groove 26, and the second guide hole 16 is formed in the flat plate 34 in the extending direction of the top end of the second guide groove 26.

In a preferred embodiment, as shown in fig. 3, a first box is arranged below the motor one 9, and a chain or a wire rope from the first lifting lug 21 and the third lifting lug 23 passes through the third guide groove 27 and the first guide groove 25, then passes through the first guide hole 15, changes direction around the first pulley 13 and is connected to the motor one 9. A second box 12 is arranged below the second motor 10, and a chain or a steel wire rope from the second lifting lug 22 and the fourth lifting lug 24 passes through the fourth guide groove 28 and the second guide groove 26, then passes through the second guide hole 16, changes direction around the second pulley 14 and is connected to the second motor 10. The first motor 9 and the second motor 10 are synchronously operated, and the first control board 17 and the second control board 18 are accurately controlled.

The control panel I17 is an arc-shaped thin-wall structure, and the control panel II 18 is also an arc-shaped thin-wall structure, so that the control device is more convenient when a motor drives a chain or a steel wire rope to be loosened and tightened. And the arc openings of the control plate I17 and the control plate II 18 are downward, so that only small acting force is needed when the chain or the steel wire rope is lifted upwards. Further, the arc-shaped structure is also favorable for guiding sand materials downwards, and the risk of plugging the outlet is reduced.

When the control plate I17 and the control plate II 18 are completely closed, the involution side I42 and the involution side II 43 are completely overlapped, and the lifting lug I21, the lifting lug II 22, the lifting lug III 23 and the lifting lug IV 24 are almost on the same horizontal plane, namely, sand cannot pass through the cavity II 3. The lifting lug penetrates through the through hole beside the second inlet 36, the top end of the lifting lug is slightly higher than the second inlet 36, as shown in fig. 1, the first involutory side 42 and the second involutory side 43 are also lower than the second inlet 36, and when the chain or the steel wire rope is loosened, the opening degree of the first control plate 17 and the second control plate 18 can be increased under the gravity action of sand.

As shown in fig. 6, when the closing angle of the first control plate 17 and the second control plate 18 is 45 °, the first involution side 42 and the second involution side 43 are at a certain distance, and the sand must pass through the cavity two 3 only through the distance between the first involution side 42 and the second involution side 43. When the sand material supply flow is quantitative, the passing area of the sand material is controlled, and the mixing proportion of the sand material and the water can be controlled. 45 is just one angle for the purpose of illustrating the features of the present invention. During construction operation, the sand blockage can be effectively avoided by repeatedly adjusting the opening and closing degrees of the first control plate 17 and the second control plate 18 within a certain angle range.

As shown in fig. 7, when the control plate one 17 and the control plate two 18 are completely opened, the distance between the involution side one 42 and the involution side two 43 is also the largest, and the sand material can pass through the cavity two 3 completely at the largest area.

Compared with the prior art, the underwater sand mixing and conveying device can prepare special mortar, realizes the accurate hydraulic reclamation operation of the dredger and increases the construction diversity of the dredger. Meanwhile, the damage to the ecology of the sea or the river is reduced, and the method is more environment-friendly and energy-saving. The first control panel 17 and the second control panel 18 of the sand mixing and conveying device can adjust the mixing effect of the mortar, reduce the phenomenon of blocking, have a simple structure, and can obviously reduce the material cost and the labor cost.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a dredger is with sand material under water mixes and conveyor, its characterized in that, including cavity one (2), cavity two (3), cavity three (4), pipeline one (5) and pipeline two (6), cavity two (3) are located cavity one (2) directly over, cavity three (4) are located cavity two (3) directly over, the bottom export of cavity three (4) is four (41) and cavity two (3) the top entry is three (38) is linked together, the bottom export of cavity two (3) is three (39) and the top sand material entry of cavity one (2) is two (36) are linked together, the lateral part water entry one (35) of pipeline one (5) and cavity one (2) are connected, the export one (37) of cavity one (2) is connected with pipeline two (6), entry one (35) and export one (37) set up relatively, the inboard of the top sand material entry two (36) of cavity one (2) is equipped with the switching machine that is used for adjusting the sand fall volume The opening and closing mechanism comprises a first control plate (17) and a second control plate (18) which are arranged in a split mode, and the first control plate (17) and the second control plate (18) are rotated to be opened and closed from the middle folding position of the first control plate and the second control plate to the front and the back.

2. The underwater sand mixing and conveying device for the dredger according to claim 1, characterized in that the control plate one (17) and the control plate two (18) are both arc-shaped thin-walled structures, and the arc-shaped openings face downwards.

3. The underwater sand and material mixing and conveying device for the dredger according to claim 1, characterized in that one side of the control plate one (17) is hinged with the cavity one (2), and one side of the control plate two (18) is hinged with the cavity one (2).

4. The underwater sand mixing and conveying device for the dredger according to claim 3, characterized in that one side of the first control plate (17) is provided with a first shaft (19), the first control plate (17) is hinged with the first cavity (2) through the first shaft (19), one side of the second control plate (18) is provided with a second shaft (20), and the second control plate (18) is hinged with the first cavity (2) through the second shaft (20).

5. The underwater sand-material mixing and conveying device for the dredger according to claim 1, wherein the opening and closing of the opening and closing mechanism is driven by a driving device, and the driving device is a hydraulic mechanism or a motor.

6. The underwater sand-material mixing and conveying device for the dredger according to claim 5, characterized in that a pair of lifting lugs are respectively arranged at two axial ends of the first control plate (17) and the second control plate (18) near the involution position between the two control plates, the two lifting lugs at the same end are connected with corresponding driving devices through a chain or a steel wire rope, and the first control plate (17) and the second control plate (18) are controlled to be synchronously opened and closed.

7. The underwater sand-material mixing and conveying device for the dredger according to claim 6, characterized in that through holes for the two lifting lugs to pass through are formed in the top of the first cavity (2) which is located right above the two lifting lugs at the same end, and each through hole is in a dovetail shape.

8. The underwater sand-material mixing and conveying device for the dredger according to claim 6, characterized in that the outer side wall of the second cavity (3) on the same side of the two lifting lugs on the same end is provided with a guide groove for limiting the directional movement of the corresponding chain or wire rope, the lower part of each guide groove is triangular, and each guide groove is surrounded by two guard plates.

9. The underwater sand-material mixing and conveying device for the dredge boat according to claim 8, characterized in that the device further comprises a flat plate (34), the flat plate (34) is located outside the three bottoms of the cavity, the driving device is installed on the flat plate, guide holes for the corresponding chain or steel wire rope to pass through are arranged on the flat plate along the extending direction of the top end of each guide groove, and the chain or steel wire rope passing through the guide holes is connected with the corresponding driving device by passing around a pulley.

10. The underwater sand mixing and conveying device for the dredger according to claim 1, characterized in that the second cavity (3) is in an inverted cone shape, the side wall of the second cavity (3) is further provided with one or more water replenishing holes (33), and the number of the water replenishing holes (33) is one or more.

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