JP2727424B2 - Wash classifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing and classifying apparatus which sorts, for example, dredged solids (especially sand and gravel) while separating the size of the solids.

[0002]

2. Description of the Related Art Generally, when a river or a harbor is dredged with a backhoe or a clamshell, a solid mass in the bottom, such as discarded ropes, a large amount of sand, pebbles, etc., is scooped up. The solid lump thus scooped is conveyed to another place and incinerated or landfilled.

[0003]

When such scooped solid mass is conveyed to another place for processing, the incinerated matter may be incinerated, but solid masses such as a large amount of non-incinable sand and pebbles may be used. There is a problem that sludge is attached to the object, and if the landfill is used as it is, the odor is generated due to the sludge attached to the peripheral surface, which causes environmental pollution.
Therefore, it is conceivable to classify and reuse a large amount of dredged solids such as sand and pebbles, but in the case of classifying and reusing them, first wash sand, pebbles, etc., which are contaminated with sludge. .

[0004] Thereafter, for example, one of the rotary cylinders provided with a sieve on the peripheral surface is provided with a driving means for driving the rotation of the rotary cylinder. A classifier must be installed in the quarry, which is equipped with a discharge port for discharging stones larger than the mesh of the sieve, and the initial cost increases due to the installation of a washing device and a classifier. In addition, such a washing place and a large installation place for installing the classification device are required, and the operation is troublesome and cannot be performed because it is not profitable at all. The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a washing and classifying apparatus that can easily wash and classify a solid mass that has been dredged and scooped up.

[0005]

According to the present invention, there is provided a cleaning / classifying apparatus, comprising: a washing / classifying apparatus for washing a solid lump of a fluid containing a solid lump to a flow pipe while washing the solid lump; When,
A classification tube which is pivotally supported by the flow pipe as a pivot shaft and has a classification sieve at least at a base end thereof, a driving means for rotating and driving the classification tube, and which is fed into the classification cylinder when the classification tube is rotated. Means for conveying the fluid containing the solid lump from the base end side to the outlet side opening , for classifying the solid lump fed from the flow means.
A discharge port to be supplied into the sieve is opened to a pivot shaft in the classification sieve .

In addition, a plurality of inner and outer classifying cylinders are pivotally supported on a flow pipe, and a mesh of a classifying sieve formed on each classifying cylinder is set to be large on the flow pipe side, or a solid mass is washed. A pressure pump for pressurizing the liquid to be sent while flowing, and a negative pressure forming tube for forming a negative pressure by injecting the liquid pressurized by the pressure pump, and a negative pressure formed by the negative pressure forming tube. Aspirate the solid lump with
The present invention is also characterized in that the feeding means is formed so as to supply the solid lump to the feeding pipe together with the liquid injected into the negative pressure forming pipe.

Further, it is one of the features that the classifying cylinder can be raised and lowered by the swinging means so that the opening on the outlet side thereof is high, and the opening on the outlet side of the classifying cylinder is narrowed to a small diameter.

[0008]

The washing and classifying apparatus according to the present invention first cleans the solid lump with a jet stream when the fluid containing the dredged solid lump is flowed through the inside of the flow pipe by a flow means such as a jet pump. While being supplied to the pivot shaft. Next, when the jet stream containing the solid lump supplied to the pivot shaft is sent to a classification cylinder driven to rotate by the driving means, a solid lump smaller than the fluid such as water and the mesh of the classification sieve is The solid lump flowing out of the classification sieve from the classification sieve and larger than the mesh of the classification sieve is discharged to the outside from the outlet side opening of the classification cylinder by the rotating classification cylinder conveying means.

In the case where a plurality of inner and outer classifying cylinders are pivotally supported on the flow pipe, and the mesh of the classifying sieve formed on each classifying cylinder is set larger on the flow pipe side, the size of the solid mass is increased. The size can be classified into a plurality of types according to the number of classification cylinders.

[0010] The apparatus further includes a pressurizing pump for pressurizing the liquid to be fed while washing the solid mass, and a negative pressure forming pipe for jetting the liquid pressurized by the pressurizing pump to generate a negative pressure. In the one in which the solid mass is sucked by the negative pressure formed in the negative pressure forming tube and the feeding means is formed so as to supply the solid mass to the flow tube together with the liquid injected into the negative pressure forming tube, The sucking of the fluid containing the solid mass and the feeding while washing can all be performed by this feeding means.

Further, in the case where the classifying cylinder is configured so as to be able to be raised and lowered so that its outlet side opening portion is raised, the height of the outlet side opening portion is adjusted so that the type of solid lump and the drainage of liquid such as water can be reduced. Can be adjusted to an optimal state. Of course, in the case where the outlet side opening of the classifying cylinder is narrowed to a small diameter, the outflow of liquid such as water is prevented at the periphery of the narrowed outlet side opening, and sufficient drainage can be performed. is there.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a cleaning and classifying apparatus according to the present invention. <Example 1> Fig. 1 shows a dredging method that classifies a dredged sludge while washing it.
This shows a schematic configuration of the cleaning classification system, and is denoted by reference numeral 1 in the figure.
Shows the dredging and washing classification system as a whole. The washing / classifying apparatus 1 includes a feeding means 2 for dredging and transporting sludge containing solid lumps such as ports and rivers, and a washing / classifying apparatus 3 for washing and classifying sludge supplied from the flowing means 2. And

The transportation means 2 includes a dredging point 4 such as a harbor or a river.
Pump 6 for suctioning and pressurizing water through a strainer 5, an injection nozzle 7 for injecting the pressurized water pressurized by the pressure pump 6, and a negative pressure generated by the jet stream injected from the injection nozzle 7. And a suction pump 9 provided between the negative pressure forming pipe 8 and the injection nozzle 7. J. The suction port 9 is formed by connecting a suction duct 10 whose tip is open to the dredging point 4 to the suction port 9. The distal end of the negative pressure forming pipe 8 is connected to the feeding duct 1.
1 is connected to a flow pipe 13 which also serves as a pivot shaft for pivotally supporting a classifying cylinder 12 described later.

As shown in FIGS. 1 and 2, the cleaning and classifying apparatus 3 for cleaning and classifying the sludge includes a rocking means comprising a hydraulic cylinder 16 with a rocking pivot 15 erected on a base 14 as a rocking center. Swing bracket 1 that is swung by 17
8, a straight pipe 13 is supported, and the rotating pipe 19 of the classifier 12 is pivotally supported by the pipe 13 as a pivot. A discharge port 20 for discharging sludge containing solid lump and the like supplied from the feeding means 2 is opened, and the outside of the discharge port 20 is covered with a protective cover 21 for scattering prevention. One end of the rotation pivot 19 of the classifying cylinder 12 is provided at the base end side wall 21 of the classifying cylinder 12.
A support sleeve 24 is fitted to the outer peripheral portion of the flow pipe 13 via a rotary bearing member 22 and a driving means 25 for rotationally driving the classifying cylinder 12 is provided at the tip of the support sleeve 24. .

The driving means 25 includes a chain wheel 26 attached to the tip of a support sleeve 24 and an output shaft 28 of a motor 27 attached to the upper end of a swing bracket 18 extending above the support sleeve 24. The driving chain wheel 29 is connected with a chain 30. Then, the classifying cylinder 1 rotated and driven by the driving means 25
Reference numeral 2 denotes a shape-retaining vertical rail 31 which is formed in the shape of a cylinder with a bottom and which is arranged at equal intervals along the peripheral wall of the classifying cylinder 12 in a half near the base end on the support sleeve 24 side. A classifying sieve 33 is formed by a horizontal bar 32 attached at a small pitch perpendicular to the vertical shank 31 for shaping, and the classifying sieve 33 and the classifying cylinder 12 are formed.
There is provided a conveying means 35 which is formed by spirally attaching a strip 34 made of stainless steel plate to an inner peripheral surface of a portion close to the front end. Further, semi-lunar drain holes 36 are formed at regular intervals in a portion of the band plate 34 forming the transporting means 35, which is fixed to the inner peripheral surface of the half of the outlet side of the classifying cylinder 12.

Reference numeral 37 in the figure denotes a buffer sleeve inserted and fixed from the distal end of the flow pipe 13.
The buffer sleeve 37 attenuates the flow of the sludge containing the solid lump and the like supplied to the flow pipe 13 with the liquid such as the sludge stored in the buffer sleeve 37 to reduce the flow force of the flow pipe 13 and the protective cover 2.
1 is prevented from being worn out early or generating noise. In addition, reference numeral 38 in the figure denotes a classification sieve 33.
Is a receiving port for receiving the coarse solid mass discharged from the outlet side opening 40, and the shooter 38 is for discharging a liquid such as water discharged from the classifying sieve 33. The guide is supplied to a storage tank and a dehydrator not shown.

The operation of the dredging and washing classification system 1 formed as described above will be described below. First, water at a dredging point 4 such as a harbor or a river is sucked through a strainer 5, pressurized by a pressurizing pump 6, and sent to an injection nozzle 7. The high-pressure water supplied to the injection nozzle 7 is jetted as a jet stream to the negative pressure forming pipe 8, and when the jet stream spreads completely in the negative pressure forming pipe 8, the jet nozzle 7 starts to spread from the spread position. A negative pressure is formed in the negative pressure forming pipe 8 in the side part.
The negative pressure formed in this way is supplied from the suction port 9 to the suction duct 1.
And the sludge 41 containing the solid mass at the dredging point 4 is sucked from the opening at the tip thereof, and the negative pressure forming pipe 8 is sucked from the suction port 9.
Mixed into the jet stream inside.

The jet stream containing the sludge 41 containing the solid mass is supplied from the negative pressure forming pipe 8 to the flow pipe 13 through the feed duct 11, and stored in the buffer sleeve 17. After the flow force is reduced by the liquid such as the liquid and the noise and the like are sufficiently suppressed, the liquid is guided to the protective cover 21 from the discharge port 20 and is rotated by the driving means 25 to the classification sieve 33 portion of the classification cylinder 12. Supplied. Here, the solid lump in the sludge 41 supplied to the classifying sieve 33 is cleaned by the jetting means 2 by the jet flow until reaching the discharge port 20 of the flow pipe 13 and classified into the classification cylinder 12. It is supplied to the sieve 33 for use.

The sludge 41 containing the solid lump thus supplied to the classifying sieve 33 is sent from the classifying sieve portion 33 to the outlet opening 40 by the band plate 34 of the conveying means 35 by the rotation of the classifying cylinder 12. However, at this time, the water or jet stream fluid in the sludge 41 and the solid lump smaller than the mesh of the classification sieve 33 flow out of the classification sieve 12 from the classification sieve 33,
It is received and stored by a shooter 38 installed below the classifying sieve 33, or solid-liquid separated by a dehydration device such as Japanese Patent Publication No. 6-44967 proposed by the present applicant. Minutes can be used for gravel.

The coarse solid mass such as the discarded rope sent from the classifying sieve 33 to the outlet side opening 40 by the band plate 34 of the conveying means 35 is discharged outward from the outlet side opening 40 and the receiving port. 39, but at this time,
Even when the moisture is sent from the classification sieve 33 to the outlet opening 40, the moisture flows from the semi-lunar drainage hole 36 provided in the strip 34 of the conveying means 35 to the classification sieve 33, and is released from the classification sieve 33. Because

In particular, as shown in FIG. 3, a hydraulic cylinder 16 is pivoted about a pivoting support 15 erected on a base 14 as a pivot center.
When the swing means 17 is operated to swing the outlet opening 40 upward, the level 1 of the drainer rises, and the dewatering performance of the sludge supplied from the discharge port 20 into the classification cylinder 12 is improved. It can be greatly improved.

<Embodiment 2> In this embodiment, a part of the washing / classifying apparatus in the dredging / washing / classifying system 1 is modified as shown in FIG. That is, in a state in which the classification cylinders 12 and 12a of the washing classification apparatus 3 are provided in an inner and outer double, the flow pipe 13 is rotatably supported as a pivot shaft, and the classification cylinder 12 positioned inside is classified. The mesh of the classifying sieve 33a of the classifying sieve 33a positioned outside is coarser than the mesh of the classifying sieve 33a, and the end of the outlet side opening 40 of the classifying sieve 12 positioned inside is positioned outward. The classifying tubes 12a project from the outlet side opening 40a of the classifying tube 12a, and are provided on the inner peripheral surface of each classifying tube 12a.
Since the transporting devices 35 and 35a and the other configurations are the same as those in the first embodiment, the same reference numerals as those in the first embodiment denote the same characters, and a description thereof will be omitted.

In the cleaning and classifying apparatus 3 of the present embodiment configured as described above, the classification cylinder 1 from the discharge port 20 of the flow pipe 13 to the inner side.
The sludge 41 supplied to 2 is supplied through the coarse classification sieve 33 of the inner classification cylinder 12 with water and solid lumps such as relatively small sand and gravel are supplied into the outer classification cylinder 12a. The water and the solid lump such as sand and gravel supplied from the classification sieve 33 of the inner classification cylinder 12 are sent to the outlet opening 40a by the conveying means 35a with the rotation of the outer classification cylinder 12a. Sometimes water and solid lumps such as small sand and gravel are placed in the outer classification cylinder 12a.
And is discharged to the outside from below through the classification sieve 33a.

Then, the classification sieve 3 of the outer classification cylinder 12a is used.
The solid lump caught by 3a is discharged from the outlet side opening 40a by the conveying means 35a by the rotation of the outer classifying cylinder 12a. Thus, the size of the solid lump discharged from the outlet opening 40 of the inner classification cylinder 12 and the outer classification cylinder 1
The size of the solid lump discharged from the outlet opening portion 40a of 2a and the size of the solid lump discharged through the classification sieve 33a of the outer classification cylinder 12a to the outside are sequentially classified into small sizes. It has become. As is clear from this embodiment, when a plurality of classification cylinders are provided inside and outside (for example, N pieces), the solid lump can be classified into a class obtained by adding 1 to the plurality (that is, N + 1). The same can be said for a single classification cylinder as in the first embodiment.

<Embodiment 3> This embodiment is a dredging / washing / classifying system 1 according to the first embodiment.
In FIG. 5, a part of the washing and classifying apparatus is modified as shown in FIG. That is, the classification cylinder 12b of the cleaning classification device 3
The classifying sieve 33b is formed in a straight shape, and a portion between the end of the classifying sieve 33b and the outlet side opening 40b is formed in a tapered shape at the outlet side opening 40b so as to have a small diameter. Since the transport device 35b and the other configuration including the stainless steel plate 34b provided on the inner peripheral surface of the cylinder 12b and other configurations are the same as those in the first embodiment, the same reference numerals as those in the first embodiment are denoted by lowercase letters. Is omitted.

In the cleaning and classifying apparatus 3 of this embodiment constructed as described above, the outlet opening 40b is tapered so as to have a small diameter. Draining can be performed well at the part. Further, since the outlet side opening 40b of the classifying cylinder 12b is formed with a small diameter, the receiving port 39b for receiving the solid lump discharged therefrom can be reliably received without scattering even with a small diameter.

<Embodiment 4> In this embodiment, a part of the cleaning / classifying apparatus in the dredging / cleaning / classifying system 1 is modified as shown in FIG. That is, the classifying cylinder of the washing / classifying apparatus 3 is formed in a straight portion at the classifying sieve 33b similarly to the classifying cylinder 12b of the third embodiment, and the outlet side opening 40b extends from the end of the classifying sieve 33b.
Classifying cylinders 12b and 12c, which are formed in a tapered shape so as to have a small diameter at the outlet side opening 40b, are rotatably pivoted to the flow pipe 13 in a state of being positioned inside and outside, and inward. The mesh of the classification sieve 33b of the classification cylinder 12b positioned is made coarser than the mesh of the classification sieve 33c of the classification cylinder 12c positioned outside, and the outlet opening 40b of the classification cylinder 12b positioned inside. For example, except that the end portion of each of the classifying tubes 12b protrudes from the outlet-side opening 40c of the classifying tube 12c whose outside is located, for example, a band plate 34b made of a stainless steel plate provided on the inner peripheral surface of each of the classifying tubes 12b. The structure of the transfer devices 35b, 35c, etc., composed of 34c is the same as that of the second embodiment.

In the cleaning classification device 3 of the present embodiment configured as described above, the discharge port 2 of the flow pipe 13 is
The sludge 41 supplied from 0 to the inner classification cylinder 12 is subjected to water and relatively small solids such as sand and gravel in the outer classification cylinder 12c by the coarse classification sieve 33b of the inner classification cylinder 12b. Supplied to Sludge 41 supplied to the outer classification cylinder 12c
The water and solid lump such as sand and gravel are transmitted to the outlet side opening 40c by the conveying means 35c with the rotation of the classification cylinder 12c, and water and small solids such as sand and gravel that pass through the classification sieve 33c. The lump is discharged to the outside of the outer classification cylinder 12c.

Then, the classification sieve 3 of the outer classification cylinder 12c is used.
The solid lump caught by 3c is discharged from the outlet side opening 40c by the conveying means 35c by the rotation of the outer classifying cylinder 12c. Thus, the size of the solid lump discharged from the outlet opening 40c of the inner classification cylinder 12c, the size of the solid lump discharged from the outlet opening 40c of the outer classification cylinder 12c, and the outer classification The size of the solid lump discharged from the classification sieve 33c of the cylinder 12c to the outside is in a state of being gradually reduced in size.

As in the present embodiment, the outlet side openings 40b and 4
In the case where a plurality of classifying cylinders each having a small diameter of 0c are provided inside and outside, the space between the outlet side opening 40c of the classifying tube 12c located outside and the inside of the classifying tube 12b becomes narrow. In the case where a plurality of receptacles 39b and 39c for receiving the solid lump discharged from the openings 40b and 40c are provided, the solid lump discharged from each of the outlet openings 40b and 40c is surely dispersed even with a small-diameter receptacle. This is particularly convenient when classifying in multiple stages.

In each of the above embodiments, the flow device 2 is connected to the jet pump M. J. It is formed by P, but it is not limited to such. It is possible to supply the sludge that has been dredged and stored in advance by a pump, or to install the storage tank storing the sludge at a high position and to flow the sludge by its own weight. Needless to say, it may be supplied to the pipe 13. Further, in each of the above embodiments, the classification sieves 33, 33a, 33b,
Although it is arranged to be provided at the base-end-side half of 2.12a, 12b, and 12c, the classification cylinders 12 and 12a in each embodiment are provided.
・ Classifying sieves 33 ・ 33a ・ 33 for the whole of 12b ・ 12c
Of course, it can be formed of b.33c. Needless to say, a hydraulic cylinder for raising and lowering the classifying cylinder can be used as a turnbuckle or other raising and lowering operation means. In addition, it is a matter of course that the cleaning water may be sprayed from above the classification sieve of the classification cylinder in order to improve the cleaning performance.

[0032]

As described above, the washing and classifying apparatus according to the present invention, when the fluid containing the dredged solid lump is sent through the flow pipe by the feeding means, the solid lump is jetted. After being supplied to the pivot shaft while being cleaned, it is fed from the pivot shaft to a classification cylinder that is rotationally driven by the driving means. Therefore, since cleaning can be performed at the same time when the wafer is transported by the jet stream, no cleaning device is required, the transport and cleaning can be performed easily and in a short time without any trouble, and the work efficiency is greatly improved. There is an advantage that it can be improved. Moreover, even if the washed solid mass is buried as it is, there is an advantage that a bad odor due to adhesion of sludge or the like is not generated as in the related art, and the environment can be prevented from being lowered.

Further, a solid lump smaller than the mesh of the classification sieve in the fluid containing the solid lump sent to the classification cylinder flows out of the classification sieve from the classification sieve and is solid larger than the mesh of the classification sieve. Since the material is discharged to the outside from the outlet side opening of the classification cylinder by the rotating classification cylinder conveying means, even when reusing a large amount of dredged sand, solid lump such as pebbles, etc. , Classifiers such as those installed in quarries,
Since there is no need to install a cleaning device, the initial cost can be significantly reduced, and there is no need for a large installation space for installing a classifying device and a cleaning device. There is also.

In the case where a plurality of inner and outer classifying cylinders are pivotally supported by the flow pipe, and the mesh of the classifying sieve formed in each classifying cylinder is set to be large on the flow pipe side, the size of the solid mass is large. There is also an advantage that classification can be performed finely into a plurality of types according to the number of classification cylinders, and classification as a solid lump according to the application can be performed.

The apparatus further includes a pressure pump for pressurizing the liquid to be fed while washing the solid mass, and a negative pressure forming pipe for jetting the liquid pressurized by the pressure pump to generate a negative pressure. In the one in which the solid mass is sucked by the negative pressure formed in the negative pressure forming tube and the feeding means is formed so as to supply the solid mass to the flow tube together with the liquid injected into the negative pressure forming tube, Since the suction of the fluid containing the solid lump and the flow while washing are all performed by the flow means, there is an advantage that the working efficiency can be greatly improved.

Further, in the case where the classifying cylinder is configured so as to be able to be raised and lowered so that the outlet side opening portion thereof is higher, the height of the outlet side opening portion is adjusted so that the transportation time of the solid lump to the outlet side opening portion is increased. Can be set arbitrarily, and there is also an advantage that it is possible to adjust the type of solid lump or the drainage of liquid such as water and the work efficiency.

Of course, in the case where the outlet side opening of the classifying cylinder is narrowed to a small diameter, since the outlet side opening is narrowed to a small diameter, the discharged solid lump is not scattered even in a small diameter receiving port. Since it can be reliably received, it is particularly convenient when classifying into a plurality of stages.

In addition, in the washing and classifying apparatus of the present invention, a flowing means
Outlet for supplying the solid lump sent from
Since it is made to open to the pivot shaft in the classification sieve,
Supply path and device for supplying solid lump into classification sieve
It is not necessary to provide a separate
There is also the advantage that it can be done.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a dredging and washing classification system according to a first embodiment.

FIG. 2 is a vertical sectional view of the classification device according to the first embodiment.

FIG. 3 is a longitudinal sectional view of a state where the classifying device according to the first embodiment is swung.

FIG. 4 is a vertical sectional view of a classification device according to a second embodiment.

FIG. 5 is a vertical sectional view of a classification device according to a third embodiment.

FIG. 6 is a longitudinal sectional view of a classification device according to a fourth embodiment.

[Explanation of symbols]

2 ... Flowing means 3 ... Classifying device 6 ... Pressurizing pump 8 ... Negative pressure forming tube 12. 12a, 12b, 12c ... Classifying tube 13 ... Flowing tube 20 ...・ Discharge port 25 ・ ・ ・ Driving means 33 ・ 33a ・ 33b ・ 33c ・ ・ ・ Classification sieve 40 ・ ・ ・ Outlet side opening J. P ・ ・ ・ Jet pump

Claims (5)

(57) [Claims] 1. A means for feeding a solid lump of a fluid containing a solid lump to a flow pipe while washing the lump, and a classifier which is pivotally supported by the flow pipe as a pivot, and is classified at least at a base end portion. Classifying cylinder provided with a sieve for use, a driving means for rotating the classifying cylinder, and a fluid containing a solid lump fed into the classifying cylinder during rotation of the classifying cylinder from the base end side to the outlet side opening. Providing transport means for transport ,
Discharge port for supplying solid mass sent from the stage into the classification sieve
A cleaning classifier characterized in that it is opened to a pivot shaft in a classifying sieve . 2. The method according to claim 1, wherein a plurality of inner and outer classifying cylinders are pivotally supported on the flow pipe, and the mesh of the classifying sieve formed on each classifying cylinder is set large on the flow pipe side. The washing and classifying apparatus according to 1. 3. A pressurizing pump for pressurizing a liquid to be fed while washing a solid mass, and a negative pressure forming tube for jetting the liquid pressurized by the pressurizing pump to form a negative pressure. A suction means for sucking the solid lump with the negative pressure formed by the negative pressure forming pipe and supplying the solid lump to the flow pipe together with the liquid injected into the negative pressure forming pipe; The cleaning classification device according to claim 1 or 2, wherein: 4. The cleaning classification device according to claim 1, wherein the classification cylinder is configured to be able to be raised and lowered by an oscillating means so that an outlet side opening portion thereof is raised. . 5. The cleaning and classifying apparatus according to claim 1, wherein an opening on the outlet side of the classifying cylinder is narrowed to a small diameter.