KR20180040042A - Deposit transfer apparatus for dredging - Google Patents

Abstract

The present invention relates to an apparatus to transfer a dredged sediment, capable of transferring a dredged sediment to a farther distance. According to the present invention, the apparatus comprises: a check valve (20) to control repulsion to prevent sediment from falling from a hopper (10) to which a dredged sediment is supplied and prevent the fallen sediment from bouncing into the hopper (10); a screw forcibly transferring the sediment falling through the check valve (20) in one direction, wherein the diameter on the front end part side in a transfer direction is gradually reduced; a screw housing (40) axially supporting the screw (3) in the inside to allow the screw (30) to rotate in one direction, having a main surface disposed on the same vertical line as that of a front end part of the screw (30) whose diameter is reduced, wherein the diameter of the main surface is gradually reduced to have a uniform gap from the screw (30), and communicating with the hopper (10) of an upper side; a plurality of side nozzles (50) to spray a high pressure fluid from the screw housing (40) in a rotational direction of the screw (30); a center nozzle (60) to spray the high pressure fluid from the front end part with the reduced diameter of the screw (30) in an axial direction; a screw driving motor (70) to rotate the rear end part of the screw (30) on a rear side of the screw housing (40) in one direction; and a fluid supply pump (80) to allow the fluid to be sprayed through the side and center nozzles (50, 60) at a constant pressure.

Description

[0001] Deposit transfer apparatus for dredging [0002]

The present invention relates to a dredged sediment transporting apparatus, and more particularly, to a dredged sediment transporting apparatus capable of stably and promptly transporting sediments during dredging.

In general, dredging is a work to improve the quality of water by deepening the depth of water by removing the soil such as rivers, roads, and harbors and removing the contaminated sediments in the water to smooth the entry and exit of the ship.

For such dredging, the dredger which is usually equipped with the dredger is introduced in various ways in order to equip each equipment and equipments appropriately according to the depth of the dredged water, the kind of the soil at the bottom, and the transportation distance of the dredged sediment.

The most common method of dredging from the bottom of the water body is the pump type and the grab type.

In this case, the centrifugal pump is used to suck mud, sand, gravel, etc. from the bottom of the water with water, and it is fed through a pipeline called a discharge pipe to a toe line, which is an intermediate carrier, or forcedly fed to a dredging dump site (landfill) .

The grab hinge is attached to the crane barge by grabbing the grab bar and lowering the grab by its own weight. The grab is lifted by the hoist or winch and moved to the toe line.

Thus, sediments dredged by a discharge tube or grab are first separated from various kinds of dirt while being subjected to a sorting process, and the selected sediments are usually moved by pressurization using compressed air.

However, the sediment transport method using compressed air of the prior art has a disadvantage in that there is a limit in the dredging ability because the distance for transporting sediments is very short and there is a structural limitation of intermittent supply of sediments, .

In addition, in order to supply sediment to the conveying position by the compressed air in the prior art, a plate is used. In order to rotate the plate, a large number of motors are applied. However, when the sediment is supplied by rotating the plate, The rotation overload is caused and frequent failure of the motor is caused, which raises the maintenance cost.

Registration No. 1400017 (May 21, 2014)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method and apparatus for recovering deposits, which are supplied to a hopper, The present invention provides a dredged sediment transporting apparatus for a dredged sediment transporting apparatus.

It is another object of the present invention to provide a dredged sediment conveyance device capable of maximizing dredging performance by simultaneously using compressed air and high-pressure water while allowing continuous transfer of sediments using a screw.

In order to accomplish the above object, the present invention provides a dredged sediment transporting apparatus, comprising: a check valve for dropping sediments in a hopper to which dredged sediment is fed and for interrupting sediments falling off the hopper; A screw for allowing the sediment falling through the check valve to be forcibly fed in one direction and gradually reducing the diameter at the leading end side in the conveying direction; Wherein the screw housing is axially supported inside the screw housing to rotate the screw in one direction and has a diameter equal to a diameter of the screw housing; A plurality of side nozzles provided in the screw housing to inject a high-pressure fluid in a rotating direction of the screw; A center nozzle provided at a distal end portion of the screw whose diameter is reduced so that a high-pressure fluid is injected in an axial direction; A screw drive motor for rotating the rear end of the screw in one direction from the rear of the screw housing; And a fluid supply pump for injecting the fluid at a predetermined pressure through the center nozzle together with the side nozzles.

The dredged sediment transporting apparatus according to the present invention is capable of transporting continuous sediments through driving of a screw through a dredged sediment transporting apparatus according to the present invention, and transporting the droplets over a long distance through a high-pressure fluid jetted from a leading end portion of the screw.

Further, according to the present invention, the sediment continuously supplied through the check valve is continuously conveyed by driving the screw, so that the conveyance treatment efficiency is greatly improved.

1 is a vertical cross-sectional view illustrating an embodiment of a dredged sediment transport apparatus according to the present invention
2 is a sectional view taken along the line AA in Fig. 1
3 is a side cross-sectional view illustrating a coupling structure of a check valve in a dredged sediment conveyance device according to the present invention.
4 is a schematic view of the operation of the dredged sediment transporting apparatus according to the present invention
FIG. 5 is a schematic view showing the operation structure of the check type valve in the dredged sediment transporting apparatus according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a dredged sediment transporting apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a vertical sectional view showing an embodiment of a dredged sediment transporting apparatus according to the present invention, and Fig. 2 is a sectional view taken along line A-A of Fig.

As shown in the drawings, the dredged sediment transporting apparatus of the present invention is largely in the past in terms of a structure for supplying sediments, a structure for transporting supplied sediments, and a driving structure for transporting sediments.

However, the present invention is characterized in that sediments are fed, conveyed, and driven so that the sediment can be conveyed to a further distance by improving the driving means.

The center nozzle 60 and the screw driving motor 70 are provided in the hopper 10, the check valve 20, the screw 30, the screw housing 40, the side nozzle 50, And a fluid supply pump (80).

The hopper 10 of the present invention is configured to accommodate the dredged sediment supplied by the grab or bucket as before.

The hopper 10 normally prevents the overlapping of the operating paths of the grab or bucket provided with the pair so that stable supply by a pair of grabs or buckets is possible so that stable deposit supply by each grab or bucket can be prevented The size of the hopper 10 is made larger than the size of the pair of grabs or buckets.

The sediments supplied to the hopper 10 are sorted through a strainer (not shown) provided at the upper end because many foreign substances, especially waste, are relatively large.

On the other hand, when the water supply valve 11 is provided in the hopper 10 and the amount of water contained in the deposit supplied to the hopper 10 is insufficient, water is supplied through the water supply valve 11, It is more preferable to wet it with sufficient moisture.

Therefore, the deposit supplied to the hopper 10 has a certain size or less, and the check valve 20 is provided in the lower part of the hopper 10.

The check valve 20 is configured to allow the sediment supplied to the hopper 10 to be lowered stably and to prevent the sediment moving downward from being repelled by the fluid conveying pressure of the lower part again and to be prevented from splashing to the upper hopper 10 .

The check valve 20 is formed in the shape of a bar as shown in the figure, and a plurality of sediment receiving grooves 21 are formed in the circular outer circumferential surface at predetermined angles at predetermined angles, Or may be formed in a configuration in which the circular valve plate is rotated to be in a horizontal or vertical state as shown in Fig. 3 so that the opening and closing of the passage is interrupted.

It is most preferable that the number of deposit receiving grooves 21 formed in the bar-shaped check valve 20 is two to four.

The check valve 20 is not a structure for interrupting the supply of sediments but a structure for preventing sediment supplied to the lower portion of the check valve 20 from bouncing upward.

A screw housing 40, which receives the screw 30 to be rotatably supported, is connected to a lower end portion of the hopper 10 provided with the check valve 20.

That is, the screw housing 40 is connected to the hopper 10 in such a manner that the deposit descending through the check valve 20 is moved in one direction by the screw 30 rotatably accommodated in the screw housing 40 So as to move while rotating.

The screw 30 is formed by forming the screw blade 32 in a spiral shape with a diameter close to the screw shaft 31 and the outer peripheral surface of the screw shaft 31 to the inner peripheral surface of the screw housing 40, During the rotation, the sediment moves to the tip side while rotating in one direction.

The screw 30 and the screw housing 40 are gradually reduced in diameter and the distal end of the screw 30 is formed into a cone shape while the outer diameter of the screw blade 32 is gradually reduced, The screw housing 40 covering the outside of the screw 30 forms the inclined surface 41 along the inclined surface of the screw blade 32 for gradually reducing the outer diameter of the screw 30, Maintain a uniform size.

The outer circumferential surface of the screw housing 40 is downwardly inserted into the outer circumferential surface of the screw housing 40 so that the outer circumferential surface of the screw housing 40 is recessed downward to form a foreign material removing groove 42 to filter foreign objects having a relatively large size. And the drain valve 43 is formed at the tip side end portion so that the collected foreign substances are discharged to the outside.

A plurality of side nozzles (50) are provided on the outer circumferential surface of the screw housing (40) in which the screw (30) is accommodated.

The side nozzle 50 of the present invention is provided as an angle in the direction in which the screw blade 32 rotates in the screw housing 40 and water is supplied through the side nozzle 50 together with high- So that they can be sprayed at the same time.

The side nozzles 50 for spraying the high-pressure air and the side nozzles 50 for spraying the high-pressure water at this time may be formed in a single structure or independently of each other.

However, since the side nozzles 50 are provided on the same vertical line on the main surface of the screw housing 40 at a certain angle in the axial direction or in a plurality of spaced apart from each other by a predetermined length, the movement of the sediments rotated by the screw 30 Speed up the speed.

The side nozzles 50 formed in the screw housing 40 are configured so that the deposits moving due to the rotation of the screw housing 40 move more strongly and rapidly and the sediment moving toward the tip side of the screw 30 is moved toward the tip side The center nozzle 60 has a strong feed force.

Among the nozzles, the center nozzle 60 of the present invention is arranged so that the diameter of the screw 30 of the fluid supply hole 33, which is formed such that the center thereof passes through the center in the axial direction of the screw shaft 31, do.

Therefore, the center nozzle 60 allows the fluid of the same high pressure as that of the fluid ejected from the rear end of the screw shaft 31 through the side nozzle 50 to be injected through the fluid feed hole 33 so that a stronger sediment conveying pressure So that the sediment can be transported to a stronger delivery pressure through the sediment transport pipe 90 connected to the screw housing 40.

In the present invention, the screw driving motor 70 is rotatably connected to the rear end of the screw 30 that extends through the lower end surface of the screw housing 40 and is pulled out to the rear so that the screw 30 can be rotated .

Therefore, the screw driving motor 70 and the screw 30 are configured to transmit the driving force by coupling the gears or connecting the belt or the chain.

The fluid supply pump 80 of the present invention is configured such that the fluid supplied to the plurality of side nozzles 50 provided in the screw housing 40 and the center nozzle 60 provided at the tip of the screw 30 is injected at a constant pressure .

It is more preferable that the fluid supply pressure supplied by the fluid supply pump 80 be greater than the sediment transport pressure moved by the screw 30. [

However, a coupling 81 for allowing the fluid to be stably supplied to the screw shaft 31 rotating from the fluid supply pump 80 is connected.

The coupling 81 and the coupling coupling structure are not limited to those shown in the drawings, but can be formed in various configurations.

In the figure, reference numeral 22 denotes a valve driving portion.

The operation of the dredged sediment transporting apparatus according to the present invention will be described in more detail as follows.

The dredged sediment transporting apparatus according to the present invention may be installed in the dredger, but may be fixedly installed at a specific location.

FIG. 4 is an operational structural view of a dredged sediment transporting apparatus according to the present invention. The hopper 10 of the present invention is supplied with grab 100 or a plurality of wafers pumped by a bucket, The sediment transported by the grab 100 may also be supplied using buckets.

In the case of a sediment having a large amount of water, the sediment transported as it is may be conveyed as it is. However, the sediment transported by the toe line will be dry because the water is supplied through the water supply valve 11 which is provided separately when the hopper 10 is supplied. Of the total amount of water.

The deposit supplied to the hopper 10 is dropped by its own weight to the screw housing 40 through the opened check valve 20 under the hopper 10.

At this time, by the swing-type check type valve 20 which rotates horizontally, the check valve 20 is released from the hopper 10 by rotation so that the deposit falls downward and is rotated again in the opposite direction, .

However, when the check valve 20 is rotated in one direction as shown in FIG. 5, the sediment is continuously supplied downward through the continuous check valve 20 while the downwardly supplied sediment is fed to the hopper 10 ) To prevent it from bouncing.

The sediments falling into the screw housing 40 are filled between the screw blades 32 of the rotating screw 30 and moved to the tip side. At this time, the plurality of side nozzles 50 provided in the screw housing 40 The sediment between the screw blades 32 can be moved more quickly by the fluid to be sprayed.

The deposits between the screw blades 32 can be protruded toward the hopper 10 due to the jetting pressure of the fluid injected through the plurality of side nozzles 50. Therefore, 40), the rise of the sediment is blocked by the check valve (20).

The sediment that moves toward the tip side along the space between the screw blades 31 due to the movement of the screw 30 has a cross sectional area of the travel passage when the inclined surface 41 which gradually reduces the inner diameter at the tip end side of the screw housing 40 The moving load is generated.

However, since the sediment passing through the narrowed cross-sectional area of the moving passage is stably pushed by the high-pressure fluid supply pressure injected through the side nozzle 50 together with the rotational force of the screw 30, The load is not generated.

As the diameter passes through the reduced area, the sediment can be reliably passed through, while the pressure can be increased, but the pressure is prevented from rising due to the movement pressure imposed by the subsequent sediments.

Particularly, the sediments passing through the portion where the diameter is reduced are moved by the high-pressure fluid injected through the center nozzle 60 so as to be provided at the tip of the screw 30 so that the sediment having already passed the tip of the screw 30 is moved And is accelerated by the transfer pressure generated by the center nozzle (60).

In other words, the pressure at the tip of the screw 30 generated through the center nozzle 60 is injected through the center nozzle 60 at the tip of the screw 30 while acting as a negative pressure on the sediments passing through the reduced diameter portion So that the sediment can be transferred more strongly to the sediment transport pipe 90 by the jetting force of the fluid.

The center nozzle 60 is moved from the tip of the screw 30 to the center of the screw 30 in a state in which the movement pressure of the deposit is raised by the high pressure fluid injected through the side nozzle 50 between the screw blades 32 of the screw housing 40, The sediment transported through the sediment transport pipe 90 can be transported to a further distance by moving the sediment moving to the tip side of the screw 30 faster by the high-pressure fluid injected through the sediment transport pipe 90.

However, the fluid supplied through the side nozzles 50 and the center nozzle 60 may inject air only according to the degree of containing water in the sediment, or may cause water to be simultaneously sprayed with the air.

In addition, the sediments conveyed by the rotation of the screw 30 in the screw housing 40 include foreign matters such as stones, which are relatively heavy in load or larger than sand, 32, but the unbranched or unbranched foreign materials are collected through the foreign material removing groove 42 formed to be downwardly directed to a certain width and depth from the bottom surface of the screw housing 40, And can be discharged to the outside through the valve (43).

The dredged sediment transporting apparatus according to the present invention can prevent the dredged sediment transporting device according to the present invention from being driven by the high pressure fluid jetted through the side nozzles 50 and the center nozzle 60 with a stable driving force, So that it is possible to transport a long distance quickly.

In the present invention, the continuous driving of the screw (30) and the supply of the sediment to the screw housing (40) are continuously performed, and the sediment supplied from the screw (30), the side nozzle (50) and the center nozzle It is possible to carry out continuous transport using the high-pressure fluid to be sprayed. Therefore, it is possible to drastically shorten the dredging period by significantly improving the transporting ability of the sediment per hour, and it is possible to achieve a very economical effect Can be expected.

10: hopper 11: water supply valve
20: check type valve 21: sediment receiving groove
30: screw 31: screw shaft
32: screw blade 33: fluid supply hole
40: screw housing 41:
42: Foreign matter removing groove 43: Drain valve
50: side nozzle 60: center nozzle
70: screw drive motor 80: fluid supply pump
90: Sediment transport pipe

Claims (5)

A check valve for controlling the falling of sediments and the sediment falling down from the hopper supplied with dredged sediment so as not to jump into the hopper;
A screw for allowing the sediment falling through the check valve to be forcibly fed in one direction and gradually reducing the diameter at the leading end side in the conveying direction;
Wherein the screw housing is axially supported inside the screw housing to rotate the screw in one direction and has a diameter equal to a diameter of the screw housing;
A plurality of side nozzles provided in the screw housing to inject a high-pressure fluid in a rotating direction of the screw;
A center nozzle provided at a distal end portion of the screw whose diameter is reduced so that a high-pressure fluid is injected in an axial direction;
A screw drive motor for rotating the rear end of the screw in one direction from the rear of the screw housing;
A fluid supply pump for injecting the fluid at a predetermined pressure through the center nozzle together with the side nozzles;
Wherein the dredged sediment transporting device comprises:
The method according to claim 1,
The check valve is formed in a bar shape so that a plurality of sediment receiving grooves are formed in the longitudinal direction on the circular outer circumferential surface so that a certain depth is recessed at a predetermined angle in a predetermined angle. The sediment filled in the sediment receiving groove by continuous rotation is continuously fed A dredged sediment transport device.
The method according to claim 1,
Wherein the check valve controls the opening and closing of the passage while rotating the circular valve plate to a horizontal or vertical state.
The method according to claim 1,
The screw housing is formed with a lower end portion of the outer circumferential surface in a downward direction with a predetermined width and depth so as to form a foreign material removing groove so as to filter foreign materials having a relatively large size and the bottom surface of the screw housing is inclined downward from the rear end side to the front end side And a drain valve for discharging the collected foreign substances to the outside is formed at the tip side end portion of the foreign matter removing groove.
The method according to claim 1,
Wherein the high-pressure fluid injected through the side nozzle and the center nozzle comprises high-pressure air or high-pressure air and water.

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