JPH0559223B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a dredging device used for dredging mud deposited in rivers and lakes, and for pumping up sewage from building sewage tanks, industrial wastewater, general sewage, etc. The present invention relates to a removal device that removes impurities from pollutants before pumping operations.

[Conventional technology]

Pollutants such as sludge often accumulate on the bottom of rivers, lakes, ports, etc. These are deposits of organic matter and fine particles contained in industrial wastewater and domestic wastewater that flow into lakes and marshes. Pollutants are also deposited in wastewater facilities such as septic tanks in buildings.
The dredging equipment that pumps up these fluids uses a rotary pump that transports the liquid using centrifugal force caused by the rotation of an impeller.

FIG. 9 is a sectional view of a main part of an example of a rotary pump. This pump has an impeller 2 arranged in a spiral chamber 5, and has an inlet 4 in the axial direction of the impeller shaft 3 and an outlet 6 in the orthogonal direction, and the impeller 2 and the inlet 4 are close to each other. The impeller shaft 3 is connected to a power source (not shown). When the impeller 2 rotates in muddy soil,
The mud sucked in from the suction port 4 flows into the swirl chamber 5 due to centrifugal force.
It is pushed out and discharged from the discharge port 6. This pump efficiently converts the kinetic energy added to the mud into pressure energy, resulting in a large flow rate.

However, it is difficult to use this pump because the mud of rivers and lakes contains a large number of foreign substances such as driftwood, empty cans, and synthetic resin sheets. In addition to the fact that the suction port 4 and the impeller 2 are close to each other, the swirl chamber 5 is narrow, so that impurities cannot pass through and there is a risk that the impeller 2 may be damaged. Therefore, improvements have been made to the pump itself in order to transport liquids containing contaminants.

The rotary pump shown in FIG. 10 is obtained by expanding the swirl chamber 5 of the pump shown in FIG. 9 in the axial direction of the impeller 2, and separating the impeller 2 and the suction port 4.
When the impeller 2 rotates, a vortex is generated in the swirl chamber 5,
The mud is sent into the discharge port 6 by the centrifugal force. Even if foreign matter is sucked in, there is a sufficient distance between the impeller 2 and the suction port 4, so that clogging and damage to the impeller 2 will not occur. Even if the mud contains impurities, it can be transported along with the liquid.

FIG. 11 shows a pump using a spiral rotating body 7 instead of an impeller. When the rotating body 7 rotates, mud and foreign matter near the suction port are sent into the discharge port 6 by the guide vanes 8 of the rotating body 7.

The pump shown in FIG. 12 is an enlarged version of the pump shown in FIG. 9, in which the volute chamber 5 and impeller 2 are enlarged in the axial direction of the impeller shaft 3. The impeller 2 has a small diameter, and a sufficient space is formed between the impeller 2 and the inner wall of the spiral chamber 5. When the impeller 2 rotates, foreign matter near the suction port 4 enters the swirl chamber 5 through between the blades of the impeller 2 together with mud, and is sent to the discharge port 6.

All of these pumps suck up impurities as well as mud.

[Problem to be solved by the invention]

The present invention provides a contaminant removal device for dredging equipment that removes contaminants from mud and sends only the mud that has passed through the device to the pump, thereby improving the efficiency of dredging work and avoiding blockage or damage to the pump. The purpose is to provide.

[Means to solve the problem]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A contaminant removal device for a dredging device (hereinafter simply referred to as a “removal device”) according to the present invention for achieving the above object will be described using drawings corresponding to embodiments.

As shown in FIGS. 1 and 2, the removal device of the first aspect of the present invention includes an inlet 24 of a pump 20 having an inlet 24 and a discharge pipe 25,
Fixed contaminant removal members 36 and 37 are disposed outside the cylindrical container 13, which has an opening 21 formed in the side surface and is rotationally driven by a rotational drive source 42, and comes into contact with the side surface of the cylindrical container 13. .

As shown in FIGS. 3 and 4, the removal device according to the second aspect of the present invention includes an inlet 24 of a pump 20 having an inlet 24 and a discharge pipe 25,
Contaminant removal members 36 and 3 are provided outside the cylindrical container 13 having an opening 21 formed in the side surface thereof, and are driven by a rotational drive source 42 and rotate around the side surface of the cylindrical container 13.
7 are arranged.

As shown in FIGS. 5 and 6, the removal device according to the third aspect of the present invention includes an inlet 24 of a pump 20 having an inlet 24 and a discharge pipe 25,
Contaminant removal members 36 and 3 are provided outside the cylindrical container 13 having an opening 21 formed in the side surface thereof, and are driven by a rotational drive source 42 and rotate around the side surface of the cylindrical container 13.
7 and a mud collecting member 38 are provided.

As shown in FIG. 7 and FIG. 8, the removal device of the fourth invention of the present invention is any one of the first to third inventions, and has multiple cylindrical containers having openings 21 and 21a on the side surfaces of the cylindrical container. It is composed of bodies 13 and 13a. Openings 21, 2 of adjacent cylindrical bodies 13, 13a
The comrades 1a are arranged so that they do not overlap.

The removal device of the fifth invention of the present invention is any one of the first to fourth inventions, and the foreign matter removal member 36,
At least a portion 36 of 37 is a roller that rolls on the side surface of the cylindrical container 13.

The removal device of the sixth invention of the present invention is any one of the first to fourth inventions, and the foreign matter removal member 36,
At least a portion 37 of the cylindrical container 13 is a plate that slides on the side surface of the cylindrical container 13.

[Effect]

The removing device according to the first aspect of the present invention operates as follows. When the removing device is placed in mud and the pump 20 is operated as shown in FIGS. 1 and 2, the mud flows through the opening 21 into the cylindrical container 1 as shown by the arrow.
3 and is sucked up into the suction port 24 of the pump 20. Contaminants in the mud cannot pass through the opening 21 and remain outside the cylindrical container 13. The foreign matter rotates together with the cylindrical container 13, and the foreign matter removing member 3 comes into contact with the side surface of the cylindrical container 13.
6,37.

The removal device according to the second aspect of the present invention operates as follows. When the removing device is placed in mud and the pump 20 is operated as shown in FIGS. 3 and 4, the mud flows through the opening 21 into the cylindrical container 1 as shown by the arrow.
3 and is sucked up into the suction port 24 of the pump 20. Contaminants in the mud cannot pass through the opening 21 and remain outside the cylindrical container 13. Contaminants near the opening 21 are removed by contaminant removing members 36 and 37 that circulate around the side surface of the cylindrical container 13.

The removing device according to the third aspect of the present invention operates as follows. As shown in FIGS. 5 and 6, when the removal device is placed in mud and the pump 20 is operated, the mud enters the inside of the cylindrical container 13 through the opening 21 as shown by the arrow, and enters the suction port 24 of the pump 20. be sucked up. At this time, the mud is collected from the cylindrical container 13 by the mud collecting member 38 that goes around the side surface of the cylindrical container 13.
Dredging work will be facilitated as they will be gathered near each other.
Contaminants in the mud cannot pass through the opening 21 and remain outside the cylindrical container 13. Opening 21
Contaminants in the vicinity are removed by contaminant removal members 36 and 37 that circulate around the side surface of the cylindrical container 13.

The removing device according to the fourth aspect of the present invention operates as follows. When the removing device is placed in mud and the pump 20 is operated as shown in FIGS. 7 and 8, the mud enters the inside of the cylindrical container 13 through the opening 21 as shown by the arrow. Furthermore, the mud is at the opening 21a.
into the cylindrical body 13a through the pump 20.
is sucked up into the suction port 24 of. Contaminants in the mud cannot pass through the opening 21 and remain outside the cylindrical container 13. Even if a thin and long foreign object enters the opening 21, the tip of the foreign object is inside the cylindrical body 1.
Since it hits 3a, it does not go inside.
Contaminants near the opening 21 are removed by contaminant removing members 36 and 37 that circulate around the side surface of the cylindrical container 13.

The removal device of the fifth invention of the present invention is the removal device of the first to fourth inventions.
It works similarly to each device of the invention. Contaminants near the opening 21 are removed by rollers 36 rolling on the side surface of the cylindrical container 13.

The removal device of the sixth invention of the present invention is the removal device of the first to fourth inventions.
It works similarly to each device of the invention. Contaminants near the opening 21 are removed by a plate 37 that slides on the side surface of the cylindrical container 13.

〔Example〕

Examples of the present invention will be described in detail below.

FIG. 1 is a partially sectional side view of one embodiment of the impurity removal device of the present invention, and FIG. 2 is a plan view thereof.

A base 12 of the contaminant removal device shown in the figure is disk-shaped, and a stepped support shaft 14 having a large diameter at the bottom is disposed in the center thereof. A bearing 15 is provided at the stepped portion of the stepped support shaft 14, and the cylindrical container 13 is rotatably attached via the bearing 15. A hole 16 is formed in the center of the bottom surface of the cylindrical container 13, and a ring 17 having a larger diameter than the hole 16 is attached around the hole 16. That is, the cylindrical container 13 is supported by its bottom surface and the inner surface of the ring 17 being in contact with the bearing 15. The upper part of the stepped support shaft 14 loosely passes through the hole 16 and reaches the inside of the cylindrical container 13. A pedestal 18 is attached to the upper end of the stepped support shaft 14.

A plurality of openings 2 are formed on the side surface of the cylindrical container 13. The openings 2 are arranged in a grid pattern. A main shaft 22 is attached to the center of the upper surface of the cylindrical container 13. The main shaft 22 is hollow and the cylindrical container 13
communicates with the inside. Pedestal 1 inside cylindrical container 13
A submersible pump 20 is disposed above 8. The submersible pump 20 is capable of obtaining a large flow rate as shown in FIG. 9, and has a suction port 24 at its lower part. The discharge pipe 25 is connected to an external tank (not shown) through the inside of the main shaft 22.

Four pillars 35a to 3 are provided at the peripheral edge of the base 12.
5d is erected (see Figure 2). Post 35
A, 35c are attached with a plurality of rubber rollers 36 corresponding to the opening 21 of the cylindrical container 13.
The roller 36 faces the cylindrical container 13 and is in contact with the side surface thereof. Similarly, a plurality of plates 37 are attached to the supports 35b and 35d. The plate body 37 has a substantially quadrilateral shape with two curved sides facing each other, and one curved side is in contact with the side surface of the cylindrical container 13.

A disk-shaped upper plate 3 is provided on the upper part of the pillars 35a to 35d.
9 is installed. The main shaft 22 freely passes through the opening at the center of the upper plate 39, and the main shaft 22 is supported by a bearing 33 attached to the upper plate 39. On top of the upper plate 39 are the main shaft 22 and the cylindrical container 13.
A driving device is provided to drive the equipment. The drive device includes a motor 42 attached to a support plate 41, a transmission 43, and a gear 44. motor 4
The output shaft of the main shaft 22 is connected to a transmission 43 , and a gear 44 serving as the output shaft of the transmission 43 meshes with a gear 45 provided on the outer periphery of the main shaft 22 .

This removal device is used as follows.

The removing device is placed in muddy soil and the submersible pump 20 is operated. The mud is drawn toward the cylindrical container 13 by the suction force of the submersible pump 20, and the mud is drawn toward the opening 21.
from inside the cylindrical container 13. Cylindrical container 13
The mud inside is discharged to a discharge pipe 25 by a submersible pump 20.
It is then discharged. Contaminants in the mud are also attracted toward the cylindrical container 13 along with the mud, but objects larger than the opening 21 cannot pass through the opening 21. Therefore, the foreign matter is contained in the cylindrical container 13.
It stays in the vicinity of the opening 21 in a state where it is attracted to.

When the motor 42 is driven to rotate, the rotation is transmitted to the gear 45 via the transmission 43 and the gear 44, and the cylindrical container 13 rotates together with the main shaft 22 in the direction of the arrow. When the cylindrical container 13 rotates, its side surfaces slide on the rollers 36 and plates 37 attached to the supports 35a to 35d. Contaminants near the opening 21 are removed from the cylindrical container 13 by the rollers 36 and the plate 37.
It is torn off from the side of the Therefore, the opening 21
There will be no blockage, and dredging work can be carried out smoothly.

FIG. 3 is a partially sectional side view of another embodiment of the impurity removal device of the present invention, and FIG. 4 is a plan view thereof.

A cylindrical container 13 is fixed to the base 12,
A plurality of openings 21 are formed on the side surface thereof. The openings 21 are arranged in a grid pattern. At the center of the upper surface of the cylindrical container 13, a stepped main shaft 23 having a large diameter at the bottom is attached. The main shaft 23 is hollow and communicates with the inside of the cylindrical container 13. A submersible pump 20 is disposed inside the cylindrical container 13. The submersible pump 20 is capable of obtaining a large flow rate as shown in FIG. 9, and has a suction port 24 at its lower part. The discharge pipe 25 is connected to the main shaft 2 from the top surface of the cylindrical container 13.
It is connected to an external tank (not shown) etc. through the inside of 3.

A bearing 33 is provided on the stepped portion of the main shaft 23, and rotatably supports a ring 32 fitted onto the upper surface of the bearing 33. Four arms 34a to 34d are radially attached to the side surface of the ring 32 (see FIG. 4). From the tips of the arms 34a to 34d,
The support columns 35a to 35d are respectively attached so as to be oriented downward. A plurality of rollers 36 are attached to the supports 35a, 35c in correspondence with the opening 21 of the cylindrical container 13. Similarly, the pillars 35b and 35d have
A plurality of plate bodies 37 are attached. The roller 36 and the plate 37 are the same as those in the embodiment described above, and face the cylindrical container 13 and abut against the side surface thereof.

A roller 36 and a plate 3 are provided on the upper side of the main shaft 23.
A driving device for driving the 7 etc. is provided. The drive device is composed of a motor 42, a transmission 43, and a gear 44. The output shaft of the motor 42 is connected to a transmission 43, and the gear 44, which is the output shaft of the transmission 43,
It meshes with a gear 45 provided on the outer periphery of the ring 32.

This removal device is used as follows.

When the removal device is placed in the mud and the submersible pump 20 is operated, the mud is removed from the discharge pipe 2 as in the previous embodiment.
5, and the impurities in the mud remain near the opening 21.

When the motor 42 is driven to rotate, the rotation is transmitted to the gear 45 via the transmission 43 and gear 44, causing the ring 32 and the arms 34a to 34d to rotate. The pillars 35a to 35d go around the side surface of the cylindrical container 13. The roller 36 rolls on the side surface of the cylindrical container 13,
The plate 37 slides on the side surface of the cylindrical container 13 to remove foreign matter near the opening 21. Therefore, opening 2
1 is never blocked.

5 and 6 show another embodiment of the removing device of the present invention. This removing device is the removing device shown in FIGS. 3 and 4 with the addition of a mud collecting member 38, and the basic structure is the same as the removing device described above.
The mud collecting member 38 has a dome shape and is attached to the pillars 35a and 35c with an opening inward in the circumferential direction. A plate 37 is attached to the column 35b, and a plate 37 is attached to the column 35d.
A roller 36 is attached to the roller 36 (see FIG. 6).

This removal device operates similarly to the removal device described above. In addition to this action, the mud collecting member 38
The muddy soil separated from the cylindrical container 13 is collected near the cylindrical container 13 by going around the cylindrical container 3. Therefore, mud dredging work will be accelerated. In addition to the above-mentioned mud collecting members, screw-shaped ones, spiral conveyors, shovels, tricombits, etc. may also be used.

FIGS. 7 and 8 show an embodiment in which the cylindrical containers of the removal device are multiplexed. This removal device
The cylindrical container 13 of the removing device shown in FIGS.
A cylindrical body 13a is provided inside the cylinder, and the side surfaces are doubled. As shown in FIG. 7, the cylindrical container 13
The inside of is divided concentrically by a cylindrical body 13a. An opening 21a is formed in the side surface of the cylindrical body 13a, and its diameter is smaller than the diameter of the opening 21. The openings 21a are arranged so as not to overlap the openings 21.

The basic operation of this removal device is the same as that of the removal device described above, but since the cylindrical container 13 is double-layered, the ability to remove foreign substances is further enhanced. If the cylindrical container 13 is made of one layer, there is a possibility that foreign matter that is thinner and longer than the opening 21 will enter the inside of the cylindrical container 13, but in this removal device, the tip of the long foreign matter comes into contact with the cylindrical body 13a. , never reaches its insides.

Note that the removal device of the present invention can perform dredging work more efficiently if it is mounted on a water lily or the like that is towed by a self-propelled trolley or a barge that has an endless track.

〔Effect of the invention〕

As described above in detail, the contaminant removal device for a dredging device according to the present invention removes contaminants from muddy soil, thereby making it possible to carry out dredging work in which only muddy soil is transported. Therefore, it is possible to use a pump with a large flow rate exclusively for liquid in the dredging equipment, greatly improving the dredging capacity. Further, it is possible to avoid clogging of the dredging equipment and avoid wear and tear of the pump equipment used.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view showing an embodiment of the removal device of the dredging device of the present invention, FIG. 2 is a plan view thereof,
3, 5, and 7 are partial cross-sectional side views of another embodiment, and FIGS. 4, 6, and 8 are plan views corresponding to FIGS. 3, 5, and 7, respectively. Figure, No. 9
Figures 1 to 12 are sectional views of essential parts of the pump. 12... Base, 13... Cylindrical container, 13a...
Cylindrical body, 14... stepped support shaft, 20... submersible pump, 21, 21a... opening, 22, 23... main shaft, 24... suction port, 25... discharge pipe, 32...
Ring, 34a, 34b, 34c, 34d... Arm, 35a, 35b, 35c, 35d... Support,
36...Roller, 37...Plate body, 38...Mud collecting member, 39...Top plate, 42...Motor, 43...Transmission, 44, 45...Gear.

Claims (1)

[Scope of Claims] 1. A cylindrical container is provided with an inlet of a pump having an inlet and an outlet pipe therein, an opening is formed in the side surface, and the cylindrical container is rotatably driven by a rotary drive source. A foreign matter removal device for a dredging device, characterized in that a fixed foreign matter removal member that comes into contact with a side surface of a container is disposed. 2. A cylindrical container is provided with an inlet of a pump having an inlet and a discharge pipe inside, and an opening is formed in the side surface, and a contaminant that is driven by a rotary drive source and circulates around the side surface of the cylindrical container is placed outside A contaminant removal device for a dredging device, characterized in that a contaminant removal member is provided. 3 A cylindrical container is provided with an inlet of a pump having an inlet and a discharge pipe inside, and an opening is formed in the side surface, and a contaminant that is driven by a rotary drive source and circulates around the side surface of the cylindrical container is placed outside A foreign matter removal device for a dredging device, characterized in that a matter removal member and a mud collection member are provided. 4. The cylindrical container according to any one of claims 1 to 3 consists of multiple cylindrical bodies each having an opening on the side surface, and the openings of adjacent cylindrical bodies are arranged so as not to overlap each other. A foreign matter removal device for dredging equipment. 5. A foreign matter removing device for a dredging device, wherein the foreign matter removing member according to any one of claims 1 to 4 is a roller that rolls on a side surface of the cylindrical container. 6. A foreign matter removing device for a dredging device, wherein the foreign matter removing member according to any one of claims 1 to 5 is a plate that slides on a side surface of the cylindrical container.