JP2781801B2 - Equipment for transporting earth and sand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slurry which is earth and sand, mud, or a mixture of these and water (hereinafter referred to as earth and sand).
The present invention relates to a transport device for efficiently transporting a sheet.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. Hei 4-313517, a slurry transporting device has a casing having a rotor chamber having a circular cross section, and is inserted into the rotor chamber of the casing and rotated by driving means. A blade that extends radially from the center of rotation and forms a moving chamber that rotates with the rotor in the rotor chamber. The casing communicates with the moving chamber at the slurry loading position in the casing. There is a known one provided with a carry-in port, a carry-out port communicating with a moving chamber at a slurry carry-out position, and an air supply port. In this apparatus, when the slurry is carried into the moving chamber at the slurry carrying-in position from the carrying-in port, and the moving chamber is rotated to the slurry carrying-out position by rotation of the rotor,
The air is discharged from the carry-out port by the air supplied from the air supply port. Since such a slurry conveying device conveys earth and sand by air, it is possible to convey earth and sand with little moisture. Thus, for example, dredged soil (slurry)
Can be transported in a state where the water is sufficiently removed, so that the energy required for transport can be reduced as compared with a dredge pump or the like, and the efficiency is high.

[0003]

SUMMARY OF THE INVENTION
From the viewpoint of energy saving, it is desirable to reduce the weight of the rotating part as much as possible for other transporting devices for transporting earth and sand. In addition, there is also a problem that it is desired to reduce the weight of the entire slurry transporting device as much as possible, and this is an urgent problem particularly when the slurry transporting device is installed on a ship. Further, there is a problem that it is desired to improve the durability of the device itself as much as possible.

[0004] In the above-mentioned conventional slurry conveying apparatus,
The compressed air containing the slurry leaks from the moving chamber or the like at the slurry discharge position, and the high-speed high-pressure jet damages the casing or the rotor due to wear or the like.

The present invention has been made in view of such a point, and an object of the present invention is to firstly provide a highly durable transport device in which the rotating parts and the entire device are light in weight. Secondly, it is another object of the present invention to provide a transport device in which compressed air including earth and sand does not leak in the device.

[0006]

In order to achieve the above-mentioned object, a first aspect of the present invention is to provide a casing which has a cylindrical space therein and which is placed sideways, and which has a cylindrical shape corresponding to the space and has a cylindrical shape. A rotatable housing, and a drive mechanism for rotating the rotor so as to stop at two locations in one round. A fixed carry-in port is provided on the upper wall of the casing, and a fixed carry-out port is provided on one of the side walls. A fixed air introduction port for introducing compressed air is opened on the other side wall, and a movable carry-in port communicating with the fixed carry-in port at the first stop position is opened in the peripheral wall of the rotor, On the side wall of the rotor, a moving air inlet and a moving outlet are respectively opened to communicate with the fixed air inlet and the fixed outlet when in the second stop position, and further, on an inner peripheral wall around the fixed inlet.
Form a concave groove and fit a tube made of an elastic body into this concave groove
Control the supply and discharge of compressed air to this tube
To supply water to the above groove
Configuration.

According to a second aspect of the present invention, in the configuration of the first aspect, the rotor is divided into two rooms by partition walls, and the rotor has a moving carrying inlet, a moving air inlet, and a moving carrying outlet opened for each room. I have.

[0008]

[0009]

According to the first aspect, when the rotor is rotated by the driving mechanism and stopped at the first stop position, the fixed carry-in port communicates with the movable carry-in port, and the movable air introduction port and the movable carry-out port are respectively formed by both side walls of the casing. Will be blocked. In this state, when the earth and the like are carried into the fixed carry-in port by, for example, a bucket, the earth and the like are filled in the rotor.

When the rotor is rotated by the drive mechanism and stopped at the second stop position, the fixed air inlet communicates with the moving air inlet, and the fixed outlet communicates with the movable outlet.
Then, the compressed air enters the rotor from the fixed air introduction port and the moving air introduction port, and carries out the soil and the like in the rotor from the movable carry-out port and the fixed carry-out port. When a pipe or the like is connected to the fixed carry-out port, for example, earth and sand are conveyed through the pipe and the like.

Further, when the rotor is in a first stop position and the second stop position, when supplying compressed air into the tube by the air control device, the tube is pressed against the rotor outer peripheral wall expands in the groove, the casing And the rotor. For this reason, compressed air containing earth and sand leaked between the casing and the rotor from each air inlet or each carry-out port does not enter the casing inner peripheral wall or the rotor outer peripheral wall.

When the rotor is rotated from the first stop position or the second stop position, when the compressed air is discharged from the tube by the air control device, the tube contracts in the concave groove and separates from the outer peripheral wall of the rotor, thereby causing the rotor to rotate relative to the casing of the rotor. Rotational resistance is reduced. Moreover, the rotational resistance is further reduced by the water supplied to the concave groove.

According to the second aspect , when the rotor is at each stop position, one of the rooms is filled with earth and sand, and at the same time,
Earth and sand are carried out from the other room.

[0014]

Embodiments will be described below. In FIGS. 1 and 2, reference numeral 10 denotes a casing horizontally placed with a cylindrical space therein, 20 denotes a cylindrical rotor corresponding to the space, and a rotor rotatably housed in the space. This is a driving mechanism for rotating the rotor 20. Shafts 31 and 32 are fixed to the left and right side walls of the rotor 20, respectively.
The shafts 31 and 32 are rotatably supported by the casing 10 via underwater bearings. Further, a driven gear 33 having an internal gear is provided on the right shaft 32, whereas a hydraulic motor 34 is provided on the casing 10, and a driving gear 35 attached to a rotating shaft of the hydraulic motor 34 is driven by the driven gear 35. It is in mesh with the gear 33. The power supply to the drive gear 35 is controlled by a control device (not shown) to control the rotation of the rotor 20 and stop at two locations in one rotation for a predetermined time. This 2
The locations are the first stop position shown in FIG. 1 and the second stop position shown in FIG.

The upper wall of the casing 10 has a fixed carry-in opening 11 which is substantially square in plan view, the lower part of the left side wall has a substantially circular fixed carry-out opening 12, and the lower part of the right side wall has a substantially circular fixed carry-out opening 12. A circular fixed air inlet 13 is open. A pipe 14 with a flange projects leftward from the fixed carry-out port 12. In addition, the fixed air inlet 13
Compressed air is supplied to the space 15 on the right side of FIG.

On the peripheral wall of the rotor 20, when the rotor 20 is at the first stop position shown in FIG.
A movable carry-in port 21 communicating with 1 is opened in substantially the same shape as the fixed carry-in port 11. A movable outlet 22 communicating with the fixed outlet 12 when the rotor 20 is at the second stop position shown in FIG. 8 is opened on the left side wall of the rotor 20. When 20 is in the second stop position, the moving air introduction port 23 communicating with the fixed air introduction port 13 is open. The moving outlet 22 and the moving air inlet 23 are curved and oblong so as to communicate with the fixed outlet 12 and the fixed air inlet 13 even when the rotor 20 is at about 30 degrees before and after the second stop position. Is formed.

As shown in FIG. 2, the opening edge of the fixed loading port 11 of the casing 10 and the opening edge of the moving loading port 21 of the rotor 20 have a cutter member made of a high-hardness material such as high-chromium cast iron. When the rotor 20 rotates from the first stop position to the second stop position, the cutter members 16 and 24 shear and crush foreign substances contained in soil and the like when the rotor 20 rotates from the first stop position to the second stop position. I have to. Reference numeral 17 denotes a guide portion that stands up from the periphery of the fixed entrance 11.

Next, a seal structure between the casing 10 and the rotor 20 will be described. First, the casing 10
On the inner peripheral wall on the left and right sides of the fixed carry-in entrance 11, two concave grooves 18, 18 are respectively formed over the entire circumference, and the concave grooves 18, 18 are provided with tubes 41, 4 made of an elastic material such as rubber.
1 is inserted. As shown in FIG.
Reference numeral 1 denotes an annular shape, and a branch pipe 41a for air adjustment branches from the two places and is drawn out of the casing 10. 41b is a reinforcing member for reinforcing the vicinity of the branch of the branch pipe 41a. Branch tube 41 of this tube 41
To a is connected a hose extending from an air control device (not shown) for controlling the supply and discharge of compressed air. Reference numeral 42 denotes an injection path provided in the casing 10 so as to communicate the concave groove 18 to the outer wall. Water is constantly supplied to the injection path 42 under pressure. The water in this case is seawater or muddy water. Further, the four grooves 18 described above,
Two concave grooves 19, 19 are formed in the inner peripheral wall of the casing 10 at the front and rear sides of the fixed carry-in port 11 between the inner two of the 18, 18, 18, respectively, in the axial direction of the casing. 18, 18. Tubes 43 made of an elastic material such as rubber and closed at both ends are fitted into the respective grooves 19. A branch pipe for air adjustment branches from an intermediate portion of each tube 43 and is drawn out of the casing 10, and a hose extending from the air control device is connected to the branch pipe.

Further, on the casing 10, a solid separating device 60 for separating solids from conveyed earth and sand is mounted. The solid separation device 60 includes a device main body 61 forming a vertical flow path, a solid discharge port 62 provided on a side wall of the device main body 61 in communication with the flow path, and a height substantially equal to that of the solid discharge port 62. A plurality of rotating bodies 63 with projections are provided in the flow path and rotate around the horizontal axis from the upstream side of the flow path toward the solid discharge port 62. That is,
When earth and sand are carried in from above by a bucket or the like, the earth or sand hits the rotating body 63 with projections, and the earth and sand itself passes between the rotating bodies 63 with projections and flows downstream of the flow path. The solid foreign matter such as a large rock included is a rotating body 6 with projections.
Remain on 3 In this case, since the rotating body 63 with the projection is rotating around the horizontal axis from the upstream of the flow path toward the solid discharge port 62, the solid foreign matter is sent to the rotating body 63 with the projection and flows out of the solid discharge port through the solid discharge port. Is discharged.

The operation of the above embodiment will be described. First, when the rotor 20 is rotated by the drive mechanism 30 and stopped at the first stop position shown in FIG.
1, the fixed air introduction port 13 and the fixed carry-out port 12 are closed by both side walls of the rotor 20, respectively, and the moving air introduction port 23 and the movable carry-out port 22 are closed by both side walls of the casing 10, respectively. In this state, when the sediment or the like from which the solid foreign matter has been removed by the separation device 60 falls into the fixed carry-in port 11, the earth and the like are filled in the rotor 20.

When the rotor 20 is rotated by the drive mechanism 30 and stopped at the second stop position shown in FIG. 8, the fixed carry-in port 11 is closed by the peripheral wall of the rotor 20, and the fixed air introduction port 13 is moved by the moving air. The fixed discharge port 12 communicates with the introduction port 23 and the movable discharge port 22. Then, the compressed air enters the rotor through the fixed air introduction port 13 and the moving air introduction port 23, and pushes out the soil and the like in the rotor to move the moving outlet 2.
2 and the fixed carry-out port 12 are carried out. When a pipe or the like is connected to the fixed carry-out port 12, for example, earth and sand are conveyed downstream through the pipe and the like.

In this case, when the compressed air is supplied to the tubes 41 and 43 by the air control device when the rotor 20 is at the first stop position and the second stop position,
43 expands in the grooves 18 and 19 and presses against the outer peripheral wall of the rotor, thereby sealing between the casing 10 and the rotor 20.
For this reason, each air introduction port 13, 23 or each carry-out port 12,
From 22, compressed air including earth and sand leaked between the casing 10 and the rotor 20 does not enter the inner peripheral wall of the casing or the outer peripheral wall of the rotor.

When the rotor 20 is rotated from the first stop position or the second stop position, compressed air is discharged from the tubes 41 and 43 by the air control device, and the tubes 41 and 43 contract in the concave grooves 18 and 19. As a result, the rotor 20 separates from the outer peripheral wall of the rotor and the rotational resistance of the rotor 20 to the casing 10 is reduced. In addition, the rotation resistance is further reduced by the water supplied to the grooves 18 and 19.

As one mode of use of the transport device of the above embodiment, a transport system for dredged soil will be described with reference to FIG. This transport system is, for example, installed on a ship berthing, and transports dredged soil brought in by a bucket or the like from a barge boat laid side by side to the ship to a disposal place several kilometers away via a pipe. In FIG. 9, reference numerals 71 to 73 denote compressors and 74 denotes a surge tank, both of which are connected by air passages 75 to 77. Control valves 78 to 80 are provided in the air passages 75 to 77, respectively. I have. P1 and P2 are both the transfer device (having a separation device) of the above embodiment, and the fixed air inlet 13 and the surge tank 74 are connected by air passages 81 and 82, respectively. 82 has a control valve 83,
84 are provided respectively. Each transport device P1 and P
Flanged pipe 1 connected to fixed outlet 12
4, pipes 85 and 86 for transporting earth and sand are connected to each other, and these merge to form a pipe 87.
It is laid to the disposal site. Each pipe 85, 86 is provided with a check valve 88, 89. The surge tank 74 and the pipe 87 are connected by an air passage 90, and a control valve 91 is provided in the air passage 90.

In this transport system, the compressor 71
The opening of the control valves 78 to 80 is adjusted according to the operating state of the control devices 73 to 73, and the opening of the control valves 83 and 84 is adjusted according to the operating state of the transfer devices P1 and P2. By such control, the transfer state of soil and the like to the pipe 87 by the transfer devices P1 and P2 is controlled. The rotor 2 of the transport device P1
0 is in the first stop position when the rotor 2 of the transfer device P2 is
0 is in the second stop position, and when the rotor 20 of the transfer device P2 is controlled to be in the first stop position when the rotor 20 of the transfer device P1 is in the second stop position, the same bucket can be used. It can be set up so that earth and sand and the like are alternately carried into the transporting devices P1 and P2, which is efficient. Further, the supply air from the compressors 71 to 73 is supplied to the transfer devices P1, P2.
When it is excessive to supply the compressed air to the pipe 87, compressed air is supplied to the pipe 87 by adjusting the opening of the control valve 91. With the assistance of the compressed air, the conveyance of the dredged material in the pipe 87 can be accelerated. it can.

Therefore, in the above-described embodiment, the earth and the like are filled in the rotor 20 and are discharged at a stroke by the compressed air. Therefore, for example, in the case of transporting dredged soil, it is possible to transport in a state where moisture is sufficiently removed, so that the energy required for transport can be reduced as compared with a dredge pump or the like, and the efficiency is high and high. The transfer ability can be obtained. Further, as compared with a conventional slurry conveying apparatus having a blade, the rotor 20 which is a rotating part can be reduced in weight, so that energy can be saved and the entire apparatus can be reduced in weight, and particularly, installed on a ship. It is advantageous when you do. Furthermore, since the rotation speed of the rotor 20 is lower than that of the conventional slurry conveying device, the durability can be improved.

Further, compressed air containing earth and sand leaked between the casing 10 and the rotor 20 does not enter the inner peripheral wall of the casing or the outer peripheral wall of the rotor due to the sealing structure.
The inner peripheral wall of the casing and the outer peripheral wall of the rotor are not damaged, and the life of the apparatus can be extended.

FIG. 10 shows a modification. In this variation,
The inside of the rotor 120 is divided into two by a partition 125. The moving entrance 12 is provided for each of the divided rooms.
1. A moving outlet and a moving air inlet 123 are provided. To explain the operation, first, when the rotor is rotated by the driving mechanism and stopped at the first stop position shown in FIG.
1 communicates with the moving inlet 121 and the moving air inlet 123
The moving outlet is closed by both side walls of the casing 110. In this state, when the sediment or the like from which the solid foreign matter has been removed by the separation device 60 falls into the fixed carry-in port 111, the sediment or the like is filled in the upper room. When in the first stop position, the fixed air introduction port 113 communicates with the moving air introduction port 123 and the fixed carry-out port communicates with the movable carry-out port in the lower room at the same time. Then, the compressed air enters the lower room from the fixed air introduction port 113 and the moving air introduction port 123, pushes out the soil and the like in the room, and is carried out from the movable carry-out port and the fixed carry-out port. When, for example, a pipe or the like is connected to the fixed carry-out port, earth and sand are conveyed downstream via the pipe and the like.

Then, the rotor 120 is moved to one by the drive mechanism.
When the vehicle is rotated by 80 degrees and stopped at the second stop position, the upper and lower rooms are reversed, and the same operation as described above is performed in a different position. In the drawing, reference numeral 126 denotes a rib for reinforcing the partition wall 125, and the rib 126 has a function of supporting a large rock or the like together with the moving entrance 121 when the earth or the like is carried in. Then, when the rotor 120 is next rotated by the driving mechanism, the rock is supported upward by the height of the rib 126, so that the rock is easily sheared by the fixed carry-in entrance 111. Further, 119 is a concave groove, 143 is a tube,
These operations are the same as in the above embodiment.

Therefore, in this modified example, the same operation and effect as those of the previous embodiment can be obtained, and in both the first stop position and the second stop position, the loading of the earth and the like into the upper room can be performed. , And at the same time, soil and sand can be carried out in the lower room. Therefore, for example, when the capacity of a bucket or the like is small and the amount of soil and the like that can be carried in at one time is small, this modified example is more suitable than the previous embodiment.

In the above embodiment, the solid separation device 60 is attached, but this is not essential for the transfer device of the present invention. Also, two kinds of grooves 18 and 19 are provided, and two kinds of tubes 41 and 43 are put therein. A series of grooves are formed on the inner peripheral wall of the casing around the fixed carry-in port 11, and these grooves are formed. One tube made of an elastic body may be inserted. Furthermore, here, the system for transporting dredged soil is described, but the transport device of the present invention is used for other purposes, for example, for transporting dry soil and the like from a predetermined location to another location on land. Of course, it can also be used. Further, a seal structure using a tube is not an essential requirement in some cases in a transport device manufactured with extremely high machining accuracy, because it is unnecessary. The same can be said for the modified example.

[0032]

As described above, according to the apparatus for transporting earth and sand, etc. of the first and second aspects, the rotor is filled with earth and sand and the like is discharged at once by compressed air, so that a high transportation capacity can be obtained. In addition to the above, for example, as compared with a conventional slurry conveying device having a blade, the rotating portion can be reduced in weight to save energy, and the entire device can be reduced in weight, and the rotation speed is low. The durability can be improved.

In the first aspect, since the compressed air containing earth and sand leaked between the casing and the rotor does not enter the inner peripheral wall of the casing or the outer peripheral wall of the rotor, the inner peripheral wall of the casing and the outer peripheral wall of the rotor may be damaged. And the life of the device can be extended.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a slurry conveying device according to an embodiment when a rotor is at a first stop position.

FIG. 2 is a longitudinal sectional side view showing the vicinity of the side end,

FIG. 3 is an enlarged longitudinal side view near the tube,

FIG. 4 is an enlarged front view of the air supply port to the tube,

FIG. 5 is a vertical sectional front view of a separation device assembled to the slurry transport device of the embodiment;

FIG. 6 is a plan view,

FIG. 7 is a side view,

FIG. 8 is a diagram corresponding to FIG. 1 when the rotor is at a second stop position,

FIG. 9 is a schematic configuration diagram illustrating an entire system according to an embodiment;

FIG. 10 is a diagram corresponding to FIG. 2 showing a modification.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Casing 11 Fixed carrying-in port 12 Fixed carrying-out port 13 Fixed air introduction port 18 Concave groove 19 Concave groove 20 Rotor 21 Moving carrying-in port 22 Moving carrying-out port 23 Moving air introducing port 30 Drive mechanism 41 Tube 43 Tube 110 Casing 111 Fixed carrying-in port 113 Fixed air inlet 119 Groove 120 Rotor 121 Moving port 123 Moving air inlet 143 Tube

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-179628 (JP, A) JP-A-64-38323 (JP, A) JP-A-5-86939 (JP, U) JP-A-4-86939 79831 (JP, U) Japanese Utility Model 4-51427 (JP, U)

Claims (2)

(57) [Claims] 1. A casing horizontally disposed with a cylindrical space inside, a cylindrical rotor corresponding to the space, rotatably housed in the space, and a rotor,
A drive mechanism for rotating so as to stop at two places in one circumference, a fixed carry-in port on the upper wall of the casing, a fixed carry-out port on one side wall, and a fixed air introduction for introducing compressed air to the other side wall. A mouth is opened, and a movable carry-in port communicating with the fixed carry-in port is opened in the peripheral wall of the rotor when in the first stop position, and the movable carry-in port is opened in the side wall of the rotor when in the second stop position. The moving air inlet and the moving outlet are respectively opened to communicate with the fixed air inlet and the fixed outlet, and the inner peripheral wall around the fixed inlet is recessed.
Form a groove and insert a tube made of an elastic body into this groove
Control the supply and discharge of compressed air to and from this tube.
And an air control device for supplying water to the groove.
Conveying device gravel or the like, characterized in Rukoto. 2. The apparatus according to claim 1, wherein the rotor is divided into two rooms by partition walls, and the rotor is provided with a moving inlet, a moving air inlet, and a moving outlet for each room.