JP2598914Y2 - Washing and transporting equipment for dredged soil - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning and transporting dredged sediment including solids such as sediment, dirt, rubble and cans settled in sewer pipes and drains.

[0002]

2. Description of the Related Art Conventionally, dredged soil pulled up from a sewer pipe or a drainage channel is washed by stirring by a stream of water or aeration after being put into a water tank. Solids such as rubble and cans are settled at the bottom of the tank. Then, the sediment deposited on the bottom of the water tank was taken out by a grab bucket or the like, put into a storage tank, and after draining the water, it was again transferred to a carrier by a club bucket and transported to a disposal site.

[0003]

However, in the above-described conventional configuration, the power for stirring the washing water and the solid is weak, and the solid is not sufficiently washed, so that it is difficult to receive the solid at the disposal site. Met. Further, since a certain standing time is required between the washing operation and the sediment removal operation, the washing and the sediment removal cannot be performed continuously. In addition, garbage, sludge, rubble, cans, bottles, etc.
There is a problem that solids of a size that cannot be accepted at the disposal site are mixed at the same time because the unloading is carried out in a state where various solids having a size of up to 50% are mixed.

[0004] The present invention solves the above-mentioned problems, and it is possible to reliably wash solids, and it is possible to continuously perform a washing operation and an operation of removing the washed solids.
It is a further object of the present invention to provide a dredged soil washing and transporting apparatus capable of classifying and removing solid matter.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a washing and conveying apparatus for dredged earth and sand according to the present invention is provided with a sand pit in which a sand-lifting device is arranged in a washing water tank and a shelf part one step higher than the sand pit. A basket-type bucket that rises and lowers by a lifting device is installed in the section, a washing water jetting device that jets the washing water stream in the upward flow is installed on the bottom of the shelf, and the transfer water flow toward the sedimentation pit is installed on the side of the shelf. It is equipped with a transfer water injection device for injection.

[0006]

According to the above construction, the dredged soil is put into the basket type bucket, and the washing water jet is jetted upward from the bottom of the basket type bucket by the washing water injection device to stir and wash the dredged soil in the basket type bucket. I do. As a result of this washing, the floating residue flows out beyond the upper edge of the basket-type bucket, sand and mud flow out of the mesh of the basket-type bucket, and heavy and bulky objects fall into the basket-type bucket. Remains.

[0007] Then, the transported water stream is injected from the side of the basket type bucket toward the sedimentation pit, and sand and mud remaining in the basket type bucket are washed out through the mesh of the basket type bucket by the transported water stream, and the basket type bucket is washed. Sand and mud flowing out of the bucket are pushed to the sand pit. Therefore, it is possible to classify what remains inside and what flows out to the outside by the basket type bucket. By setting the opening of the basket type bucket to an appropriate size, the solid remaining in the basket type bucket can be classified. Classification of large and small and light and heavy objects can be performed.

Then, the sand and mud deposited in the sand pit are carried out of the washing tank by a sand lifting device, and the basket-type bucket is lifted by a lifting device to remove solid matter remaining in the basket-type bucket.

[0009] Therefore, in the washing and transporting process from the introduction of the dredged soil to the unloading, the conventional standing time is not required, and the washing operation of the dredged earth and the lifting operation of the solid matter remaining in the basket type bucket are continuously performed. Can be done,
The work time required for cleaning and transporting from the loading to the unloading can be reduced, and the processing capacity per unit time can be improved. In addition, solids can be reliably washed by a two-way water flow consisting of an upward cleaning water flow and a horizontal transport water flow, and further sand and mud deposited in the sedimentation pit can be expected to have a further cleaning effect in the sand lifting device. it can.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a washing tank 1 has a sand pit 2 on one side, and a shelf 3 higher than the sand pit 2 on the other side. A jet pump 4 is disposed in the sand pit 2 as a sand lifting device. The sand lifting device is not limited to the jet pump 4, but may be a V bucket elevator or a screw conveyor, but the jet pump 4 can be expected to have the best cleaning effect.

A drive water tank 5 and a sedimentation separator 6 are provided on one side of the opening rim of the washing water tank 1 facing the sedimentation pit 2, and the sedimentation separator 6 is constituted by a screw conveyor. A driving water pipe 7 that connects the driving water tank 5 and the jet pump 4 is provided with a driving water pump 8 and a driving water control valve 9 in the middle of the driving water pipe 7, and a sand pump 10 that connects the sedimentation separator 6 and the jet pump 4. A sand control valve 11 is interposed midway.

On the other side of the opening rim of the washing water tank 1 facing the shelf 3, an input port 1 where a transport vehicle 12 dumps dredged soil 13.
4 is provided, and a large-size heavy-material storage hopper 15 is provided above the charging port 14. In addition, a basket-shaped bucket 16 that can move up and down over the inside and outside of the washing water tank 1 is provided on the shelf 3.
The basket type bucket 16 is connected to a lifting device 18 such as a skip hoist via a cord 17.

A basket type bucket 16 is provided on the bottom surface 3a of the shelf 3.
A vertical recess 3b is formed facing the bottom of the cleaning water injection nozzle 2 of the cleaning water injection device 19 in the recess 3b.
0 is arranged. The washing water jetting device 19 reflects the washing water jetted from the washing water jetting nozzle 20 once on the bottom surface of the concave portion 3b, and forms the basket type bucket 1
6 is injected. The washing water injection device 19 communicates with the pressure water supply pipe 23 via the washing water control valve 22, and the pressure water supply pipe 23 communicates with the driving water pipe 7 on the base end side.

A recess 3d is formed on the side surface 3c of the shelf 3 so as to face the side of the basket type bucket 16, and a transfer water injection nozzle 25 of a transfer water injection device 24 is formed in the recess 3d. Has been arranged. The transfer water injection device 24 injects the transfer water stream 26 from the transfer water injection nozzle 25 toward the sedimentation pit 2. The transfer water injection device 24 communicates with the pressure water supply pipe 23 via a transfer water control valve 27.

The operation of the above configuration will be described below.
The dredged soil 13 loaded on the transport vehicle 12 is thrown into a basket type bucket 16 from an inlet 14. Then, the cleaning water control valve 22 is opened, and the water in the driving water tank 5 that is pumped by the driving water pump 8 is supplied to the cleaning water injection device 19 through the pressure water supply pipe 23. The pressurized water supplied to the washing water jet device 19 is jetted upward from the bottom of the basket type bucket 16 as a washing water flow 21 to stir and wash the dredged soil 13 in the basket type bucket 16.

As a result of this washing, the floating residue is discharged outside beyond the upper edge of the basket-shaped bucket 16, and sand and mud are discharged to the outside from the mesh of the basket-shaped bucket 16, and heavy or coarse substances are removed. Remain in the basket 16.

Next, the transfer water control valve 27 is opened, and pressurized water is supplied to the transfer water injection device 24 through the pressure water supply pipe 23. The pressure water supplied to the transfer water injection device 24 becomes a transfer water stream 26 and is jetted from the side of the basket type bucket 16 toward the sand pit 2. Transfer water flow 26 is basket type bucket 1
Sand and mud remaining in the basket 6 are washed out through the mesh of the basket 16, and the sand, mud and the like flowing out of the basket 16 are flushed into the sand pit 2. At this time, the jetting time of the washing water flow 21 and the transfer water flow 26 is adjusted so that the jet pump 4 is not buried by the sediment deposited in the sedimentation pit 2 and the sand cannot be lifted.

According to the above-described operation, the basket-type bucket 16 can classify what remains inside and what flows out to the outside. By setting the mesh size of the basket-type bucket 16 to an appropriate size, Basket type bucket 16
It is possible to classify large and small solids to be left inside.

Thereafter, the driving water control valve 9 and the sand pipe 11
And the driving water is supplied to the jet pump 4, and the sand and mud deposited in the sand pit 2 are pulled up to the sand separator 6 through the sand pipe 10. The sediment pulled up to the sedimentation separator 6 is drained and then put into the container 28.

On the other hand, the basket type bucket 16 is
The solid matter remaining in the basket type bucket 16 is taken out to the bulky material storage hopper 15 and the washed solid matter is transferred from the coarse heavy matter storage hopper 15 to the transport vehicle 1.
Drop to 2.

Therefore, large solids such as rubble and iron chips contained in the dredged soil 13 are separated by the basket type bucket 16, so that the jet pump 4 and the sedimentation separator 6 are not blocked by the solids. In addition, dredged soil 1
In the washing / transporting process from the input of 3 to the unloading, the standing time as in the prior art is not required, and the washing operation of the dredged soil 13 and the lifting operation of the solid matter remaining in the basket type bucket 16 can be performed continuously. As a result, it is possible to reduce the work time required for cleaning and transporting from loading to unloading,
The processing capacity per unit time is improved.

Further, solids can be reliably washed by the two-way water flow of the upwardly flowing cleaning water stream 21 and the horizontal transporting water stream 26. Can be expected to have a further cleaning effect. When performing more powerful cleaning,
The water in the washing water tank 1 is discharged by the jet pump 4 and the water level is maintained below the bottom of the basket type bucket 16, and in this state, the washing water flow 21 and the transfer water flow 26 are jetted, and the jet water directly collides with the solid matter. You can do it.

[0023]

[Effects of the Invention] As described above, according to the present invention, it is possible to classify a basket-type bucket into a basket-type bucket and a basket-bucket-size basket. By setting to, large and small and light weight classification of solids remaining in the basket type bucket can be performed. The dredging soil washing work and the solid matter remaining in the basket type bucket can be performed continuously, and the processing time required for washing and transporting from input to unloading is shortened and the processing capacity per unit time is improved. Can be achieved. The solids can be reliably washed by the two-way water flow of the washing water flow and the transfer water flow.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a cleaning and conveying device according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing water tank 2 Sedimentation pit 3 Shelf 13 Dredged soil 16 Basket type bucket 18 Lifting device 19 Washing water injection device 21 Cleaning water flow 24 Transfer water injection device 26 Transfer water flow

Claims (1)

(57) [Scope of request for utility model registration] 1. A settling pit in which a sand-lifting device is arranged in a washing water tank and a shelf one step higher than the sand-setting pit are provided, and a basket-type bucket which is lifted and lowered by the lifting device is installed on the shelf, and an upward facing bottom surface of the shelf is provided. A washing and conveying device for dredged soil, comprising: a washing water jetting device for jetting a washing water flow by a flow, and a transfer water jetting device for jetting a transferring water flow toward a sand pit on a side of a shelf.