JP2000093895A - Separation treatment of excavated surplus soil/sludge based on soil quality and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for subjecting excavated surplus soil/sludge to separation treatment by soil quality and a device therefor in which excavated surplus soil or sludge having large clay lumps can be directly treated without using a surplus soil pretreatment means even when there are large clay lumps. SOLUTION: Excavated surplus soil/sludge containing clay lumps D in which clay or the like and sand or the like D2 coexist are fed to a rotary perforated plate 1 to raise the clay lumps D to a high position of the rotary perforated plate 1 by the rotation of the rotary perforated plate 1 and to make it fall to a pulverizing means F installed in the rotary perforated plate 1 and consisting of a rotary brush body 5 and a pulverizing plate 11 abutted on the peripheral surface thereof, and they are pulverized between the rotary brush body 5 and the pulverizing plate 11, and furthermore, water is sprayed to them to subject clay or the like to forced filtration and to separate clay or the like from sand or the like D2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for separating excavated soil and sludge containing clay lumps containing a mixture of gravel, coarse sand, fine sand (hereinafter referred to as sand) and silt and clay (hereinafter referred to as clay). The present invention relates to a soil separation method for separation and a device therefor.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for separating and processing excavated soil and sludge discharged from a construction site or the like for each soil type, for example, Japanese Patent Application Laid-Open No. 9-239288 is provided. This is a device for separating and processing excavated soil and sludge. The excavated soil and sludge are thrown into a rotating wire mesh body arranged in an inclined posture, and are thrown inside by rotating the rotating wire mesh body. While transferring excavated soil and sludge, a high-pressure jet nozzle is placed in the rotating wire mesh, and high-pressure jet water is jetted to break up the clay mass in the remaining soil and forcibly filter the clay. And so on.

If the excavated soil or sludge to be treated contains a large amount of clay in which clay or the like is mixed with sand and the like, a pre-treatment means for dispersing the excavated soil or sludge in water in a water tank is provided in advance. The excavated soil and sludge dispersed in the water are supplied to the above-mentioned separation treatment device for treatment.

[0004]

According to the above-mentioned separation method, when there is a large clay mass, the large mass of the clay mass is added to the water in the water tank of the residual soil pretreatment means before being put into the rotating wire mesh. It is necessary to disperse and preprocess the remaining soil. When the remaining soil pretreatment is performed, the pretreatment takes too much processing time, and the continuous treatment operation cannot be performed by the separation treatment device. Furthermore,
Since the separation treatment device and the residual soil pretreatment means must be provided separately, there is a problem that the cost of equipment and the increase in floor area are unavoidable.

[0005] The present invention has been developed in view of the above-mentioned problems of the conventional separation processing apparatus. Even when there is a large lump of clay, it does not require a pretreatment means for the residual soil, and the large lump is not required. An object of the present invention is to provide a method and an apparatus for separating and processing soil by excavation soil and sludge, which can directly treat the soil and sludge excavated including clay blocks.

[0006]

In order to achieve the above object, a method for separating excavated soil and sludge according to the type of soil according to claim 1 of the present invention comprises a rotatably mounted rotating brush body and a rotating brush body. Excavated soil and sludge including clay lumps mixed with clay and sand are put into crushing means consisting of crushing plates brought into contact with the peripheral surface of the brush body, and the clay lumps are combined with the rotating brush body and crushing plate. Water is sprayed on the perforated plate to the clay mass pulverized by the above-mentioned pulverizing means, whereby the clay or the like is forcibly filtered.

[0007] The excavated soil according to claim 2 of the present invention.
The apparatus for separating and separating soil by sludge is composed of a crushing means including a rotatable rotatably mounted and rotatively driven rotating brush body and a crushing plate abutted on the peripheral surface of the rotating brush body, and a clay mass crushed by the crushing means. And a jetting means for jetting water on a perforated plate to forcibly filter clay and the like.

[0008] The excavated soil according to claim 3 of the present invention.
The apparatus for separating sludge by soil type has a rotating perforated plate that is driven to rotate, a rotating brush body that is rotatably mounted and rotatably mounted in the rotating perforated plate, and brought into contact with the peripheral surface of the rotating brush body. A crushing means comprising a crushing plate, and a blasting means arranged to correspond to the crushing means in the rotary porous plate, and blasting means for blasting water onto the clay mass discharged from the crushing means and forcibly filtering the clay and the like. It is characterized by the following.

[0009] The excavated soil according to claim 4 of the present invention.
The apparatus for separating sludge according to soil type according to claim 3, wherein the rotary perforated plate is inclined downward and forward from the input side to the discharge side in the apparatus for separating excavated soil and sludge according to soil type. A plurality of crushing means and injection means are arranged in the inside in the axial direction.

The excavated soil according to claim 5 of the present invention.
The apparatus for separating sludge according to soil type according to claim 3, wherein the rotary perforated plate is disposed substantially horizontally in the axial direction, and the rotary perforated plate is disposed in the rotary perforated plate from the input side to the discharge side. A plurality of crushing means and injection means are arranged in the axial direction in the rotary porous plate.

[0011] The excavated soil according to claim 6 of the present invention.
An apparatus for separating and treating sludge according to soil type is described in claims 2, 3, and 4.
Or the crushing plate of the crushing means is elastically brought into contact with the peripheral surface of the rotating brush body and retreats from the rotating brush body. It is characterized by the following.

[0012] Further, the excavated soil according to claim 7 of the present invention.
An apparatus for separating sludge according to soil type according to claim 3, 4 or 5, wherein high-pressure water injection means is arranged on the outer peripheral surface of said rotary perforated plate, and holes are clogged. It is characterized in that sand and the like that have been removed are removed.

[0013]

According to the first aspect of the present invention, the excavated soil and sludge containing clay lumps in which clay or the like is mixed with sand or the like is moved between the rotating brush body of the crushing means and the crushing plate abutting on the peripheral surface of the rotating brush body. Then, the clay mass is broken down so as to tear it between the rotating brush body and the crushing plate, and finely crushed. Next, the clay mass pulverized by the pulverizing means is placed on a perforated plate, and water or the like is injected to forcibly filter the clay or the like from the holes. Thereby, even large clay ingots can be efficiently separated.

According to a second aspect of the present invention, there is provided an apparatus for implementing the first aspect of the present invention, wherein excavated soil and sludge containing clay lumps in which clay and the like are mixed are mixed with a rotary brush body and a rotary brush as crushing means. Put it between the crush plate and the peripheral surface of the body,
The clay mass is broken apart between the rotating brush body and the crushing plate and finely crushed. Next, the clay mass pulverized by the pulverizing means is placed on a perforated plate, and water or the like is injected to forcibly filter the clay or the like from the holes. Thereby, even large clay ingots can be efficiently separated.

A third aspect of the present invention is an apparatus for implementing the first aspect of the present invention. First, excavated soil and sludge including clay lumps in which clay and the like are mixed are put into a rotary perforated plate that is driven to rotate. . The clay mass is lifted to this height, falls into the crushing means, is crushed between the rotating brush body and the crushing plate, and is discharged to the bottom of the rotating porous plate. Then, here, a process of injecting water into the pulverized clay ingot by the injecting means to forcibly filter the clay or the like from a hole and separate it from sand or the like is performed. Since the above operation is cyclically repeated in the rotary perforated plate, even a large clay lump can be efficiently separated in a single step.

According to a fourth aspect of the present invention, there is provided an apparatus for implementing the first aspect of the present invention. First, excavated soil and sludge containing a clay mass in which clay and sand are mixed is rotated in an axially inclined posture. It is put into a perforated plate. The clay mass is lifted to this height, falls between the rotating brush body serving as the crushing means and the crushing plate, is broken, and is then discharged to the bottom of the rotary perforated plate. Further, the clay or the like crushed and separated by spraying water with a spraying means is forcibly filtered from the holes to separate it from sand and the like. The above operation is carried out in the axial direction by the action of the rotary perforated plate which is rotated and driven in an inclined direction in the axial direction, so that the clay mass is transferred in the axial direction and is repeatedly performed by a plurality of crushing means and injection means. Can be continuously and efficiently separated.
The sand and the like move to the discharge side of the inclined rotary porous plate and are discharged.

A fifth aspect of the present invention is an apparatus for implementing the first aspect of the present invention. First, excavated soil and sludge including a clay mass in which clay and sand are mixed are arranged substantially horizontally in an axial direction and are driven to rotate. Into a rotating perforated plate. The clay mass is lifted to this height, falls between the rotating brush body serving as the crushing means and the crushing plate, is broken, and is then discharged to the bottom of the rotary perforated plate. Further, the clay or the like crushed and separated by spraying water with a spraying means is forcibly filtered from the holes to separate it from sand and the like. The above action is performed by a plurality of crushing means and injection means because the clay mass is transferred in the axial direction by a scraping plate spirally arranged from the input side to the discharge side in the rotary perforated plate, Even large clay ingots can be continuously and efficiently separated in a single step. The sand and the like move to the discharge side of the inclined rotary porous plate and are discharged.

According to the sixth aspect of the present invention, the crushing plate of the crushing means is elastically brought into contact with the peripheral surface of the rotating brush body and retreats from the rotating brush body. When the crushed plate is pushed by the gravel and receives great resistance, it moves backward. This allows the gravel to pass, so that the clay lump containing the gravel can be smoothly and smoothly pulverized and separated.

According to the seventh aspect, since the high-pressure water injection means is arranged on the outer peripheral surface of the rotary perforated plate, when sand or the like is clogged in the mesh, the injection force of the high-pressure water injection means responds thereto. Blow off sand etc. for cleaning. By the blow-off cleaning action, the forced filtration action by water injection at the bottom of the rotary perforated plate is reliably maintained.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a soil separation apparatus 100 for executing the soil separation processing method for excavated soil and sludge according to the present invention will be described below with reference to FIGS. . As shown in FIG. 1, first, the rotary perforated plate 1 is arranged so that its axial direction is inclined forward and downward from the input side (A) to the discharge side (B). The rotary perforated plate 1 is obtained by stretching a metal net on a cylindrical frame. The perforated plate is not limited as long as it has a large number of holes and does not allow sand or the like to pass through but allows clay or the like to pass through, and may use punching metal or the like. The mesh 1M of the rotary porous plate 1 is selected as a mesh that catches sand or the like of about 75 μm. That is, coarse sand from gravel is “2 mm” and fine sand is “0.2 mm ~
0.02 mm ", the silt has a particle size of" 0.02 mm ", and the clay has a particle size of" 0.002 mm ". The outer periphery of the rotary porous plate 1 is supported at both ends by rollers 3 and 4 and driven by a driving means (not shown) in the counterclockwise direction.
It is rotationally driven at a low speed of 40 rpm. As shown in FIG. 2, a plurality of scraping plates 21 as scraping means are arranged on the inner periphery of the rotary porous plate 1 in the axial direction (X) of the rotary porous plate 1. This scraping plate 21 has a diameter of 75 m.
In order to lift the clay mass up to about m to a high place, the protrusion amount is set to about 30 to 40 mm. As a result, the clay mass D supplied to the charging side (A) is lifted by the rotation of the rotary perforated plate to the height of the rotary perforated plate, and the rotary brush body 5 of the crushing means F disposed below from there. It functions to drop toward the gap between the crushing plate 11 and the crushing plate 11. still,
The scraping means is not limited to the scraping plate 21, but may be a comb-like means. Also, since the purpose is to lift the large clay lump D upward, the small clay lump D
When targeting, it may be omitted.

The rotary brush body 5 and the crushing plate 11 constitute crushing means F inside the rotary porous plate 1. First, a rotating brush body 5 extending in the axial direction (X) is disposed near the center inside the rotary porous plate 1, and both ends of the rotating brush body 5 are supported by bearings 7 and 9. The rotating brush body 5 is driven for 400 to 600 r by a motor M.
pm (up to 1000 rpm).
The rotating brush body 5 is suitably made of stainless steel wire, but may be made of pig hair or synthetic resin as long as it is strong. Further, a crush plate 1 is provided on the peripheral surface of the rotating brush body 5.
1 is abutted. This is a plate-like member made of metal or the like. As shown in FIG. 2, the rotary brush body 5 is disposed at a position where the peripheral surface of the rotary brush body 5 descends, and the rotary brush body 5 and the crush plate 11 are V-shaped. Is mounted so that the upper part is open. The upper edge is rotatably supported by the support shaft 15, is elastically contacted by the spring member 13, and is attached so as to retreat from the rotating brush body 5. The other end of the spring member 13 is fixed to a frame F1 disposed in the rotary perforated plate 1. The crushing plate 11
May be fixedly attached.

Further, the crushing plate 11 is provided with a rotating brush body 5.
As shown in FIG. 1 and FIG. 3, the upper end is rotatably supported by the support shaft 15 so as to abut on the entire length of the side surface of the support shaft 15. The pressing force is applied by independent spring members 13. As a result, the clay lump D (in which D1 such as clay and D2 such as sand) are put between the rotating brush body 5 and the crushing plate 11 is caught by the rotating brush body 5 and strongly pressed against the crushing plate 11. Decomposes like tearing and crushed finely. And the crushed clay mass D is a rotating brush body 5
From the rotary perforated plate 1 to the lower inner wall. When the gravels are introduced, the crushing plate 11 extends the spring member 13 and retreats, so that the crushing plate 11 is prevented from passing through the crushing plate 11 and being damaged. A guide plate 23 for guiding the clay lump D falling from a high position of the rotary porous plate 1 to the rotary brush body 5 is arranged at an upper portion of the rotary brush body 5 at an angle.

In the upper part of the rotary perforated plate 1, as shown in FIGS. 1 and 2, an injection means R for jetting water to the clay soul discharged from the crushing means is elongated in the axial direction of the rotary perforated plate 1. Are located. The injection means R changes the direction of injection of the clay lump D discharged to the lower inner wall of the rotary perforated plate 1 by the crushing means F.
The forcible filtration of the clay or the like D1 from the clay mass D on the rotary perforated plate 1 is performed.
1M (holes) is washed. The water pressure of the injection means R may be a relatively low pressure from about 0.2 kg / cm ² to about the tap water pressure. The water W after the filtration is discharged to the outside together with the clay D1.

As shown in FIGS. 1 and 2, a collecting tank 40 is disposed below the rotary perforated plate 1 to collect water W and clay D1 that have passed through the mesh 1M. Water W accumulates in the recovery tank 40, and the water level L is immersed in the lower surface of the rotary perforated plate 1. The water W containing the clay and the sludge in the recovery tank 40 is discharged from the drain pipe P to the outside.

A hopper H is disposed on the input side (A) of the rotary perforated plate 1 to supply a clay mass D in which clay D1 and sand D2 are mixed into the rotary perforated plate 1. On the discharge side (B),
Discharge conveyor C is arranged. Further, on the discharge side (B) in the rotary perforated plate 1, a plurality of discharge plates 25 are attached, and the remaining soil and sand which have been transferred to the discharge side by the rotation of the rotary perforated plate and lifted to a higher position are lowered therefrom. Is dropped onto the discharge conveyor C.

Above the rotary perforated plate 1, high-pressure water injection means HF is disposed on the outer peripheral surface of the rotary perforated plate 1 to forcibly remove sand or the like D2 clogging the mesh 1M of the rotary perforated plate. This high-pressure water injection means HF, as shown in FIG.
Sand D2 clogging the mesh 1M of the rotary perforated plate 1 is blown into the rotary perforated plate 1 and the function of cleaning the mesh 1M is exhibited.

Next, with reference to FIGS. 1, 2, 5 and 6, a method of separating the excavated soil and sludge by the soil separation apparatus 100 will be described. The operation of separating the excavated soil and sludge by soil type is executed according to the flowchart shown in FIG. First, a clay soul D (a mass having a diameter of 40 to 60 mm) in which clay D1 and sand D2 are mixed is supplied to the rotary perforated plate 1 by the hopper H from its charging side (A). This step is referred to as “injection into the rotary perforated plate (a)”. As a result, the clay mass D falls to the bottom of the rotary perforated plate 1 and is rotated by the action of a plurality of scraping plates 21 provided in the rotary perforated plate 1 rotating at a low speed in the counterclockwise direction as shown in FIG. It is lifted to a height of the perforated plate 1. This step is referred to as "scratching to the upper part of the rotary perforated plate (b)".

From this, the clay mass D is formed as shown in FIG.
The rotating brush body 5 and the crushing plate 11 arranged below drop toward the crushing means F having a V-shaped opening. Clay lump D
It is caught by the rotating brush body 5, strongly pressed against the crushing plate 11, decomposed so as to tear off, and finely crushed.
When the gravel is input, the crushing plate 11 extends the spring member 13 and retreats. This process is "crushing by crushing means"
(C).

The clay mass D discharged to the rotary perforated plate 1
Is further pulverized by the injection of water W from the injection means R, dissolved in water, and the clay or the like D1 is forcibly filtered through the mesh 1M. Thus, the clay D1 is discharged to the outside together with the water W from the mesh 1M. This process is called "water injection /
Separation of clay etc. ”(d). Here, the clay soul D remaining on the mesh 1M of the rotary perforated plate 1 is lifted to a high position of the rotary perforated plate by the low-speed rotation of the rotary perforated plate 1 and the plurality of scraping plates 21. This step is referred to as "Scraping the unseparated clay mass to the upper part of the rotary perforated plate" (e). Here, the clay lump D is again dropped by the crushing means, and is "destructed by the crushing means".
Repeat (c). The above-described soil-based separation processing operation is performed while moving from the input side to the discharge side of the rotary porous plate 1 in which the clay lump D is inclined. The number of repetitions is
It is about 5 to 7 times.

In the above-mentioned operation of separating the excavated soil and sludge by soil type, a high-pressure water injection means HF is disposed above the rotary porous plate 1 on the outer peripheral surface of the rotary porous plate. As shown in FIG. 2, sand D2 clogging the mesh 1M of the rotary perforated plate 1 is actively blown into the rotary perforated plate. This step is "sand removal" (1).

Sand and the like D2 containing the gravels that have been gradually moved toward the discharge side (B) of the rotary porous plate 1 by continuing the separating operation of the clay lump D according to the type of soil are as shown in FIGS. To
The discharge conveyor 25 is lifted upward by the discharge plate 25 provided on the discharge side (B) of the rotary perforated plate 1 and dropped from the discharge plate C.
It is put on top and is discharged outside. This step is "continuous discharge of sand and the like" (g).

As shown in FIGS. 1 and 2, the clay / sludge D which has passed through the lower mesh 1M of the rotary perforated plate 1 by forced filtration.
1 and water W are collected in the collection tank 40. The clay is settled in the recovery tank 40, and the sludge D1 and the water W mixed with the water without being settled are discharged from the drain pipe P to the outside.
As described above, the operation of separating the clay mass is continuously performed.

The apparatus 100 for separating and separating soil from excavated soil and sludge according to the present invention operates as described above and has the following effects. First, the clay mass D put into the rotary perforated plate 1 is crushed positively by the crushing means F, and the forced filtration action of the clay or the like is further performed by water jetting. it can.

Further, since the rotary perforated plate is inclined and the clay lump D is lifted to a height of the rotary perforated plate while being transported by the rotation of the rotary perforated plate, and the pulverizing process is repeated by the pulverizing means F, the clay lump D The effect that the separation process can be continuously and efficiently performed is exhibited.

Further, since water is injected into the mesh of the rotary perforated plate by the high-pressure water injection means HF, sand D2 adhered to the mesh is blown into the rotary perforated plate 1 and the mesh 1M is cleaned to remove clay. The effect that the separation treatment of the lump D can be maintained for a long time is exhibited.

It should be noted that the present invention is not limited to the apparatus 100 for separating soil from excavated soil and sludge according to the first embodiment.
For example, as shown in FIG. 7, the rotary brush body 5 and the crushing plate 11 constituting the crushing means F are combined into one crushing plate 11 as in the apparatus 200 for separating the soil of excavated soil and sludge according to the second embodiment shown in FIG. Alternatively, two rotating brush bodies 5 may face each other. Of course, for one crushing plate 11,
Two or more rotating brush bodies 5 may face each other. According to the apparatus 200 for separating and separating soil from excavated soil and sludge according to the second embodiment, a processing method similar to that of the first embodiment is performed. That is, the clay lump D put into the rotary porous plate 1 is efficiently pulverized by the two rotating brush bodies 5 of the pulverizing means F, and a more excellent separation processing capacity for the large clay lump D is exhibited.

Further, two or more sets of crushing means F are arranged side by side in the rotary perforated plate, as in the apparatus 300 for separating and separating soil from excavated soil and sludge according to the third embodiment shown in FIG. Is also good. According to the apparatus 300 for separating and processing excavated soil and sludge according to the third embodiment, a processing method similar to that of the first embodiment is performed. That is, the clay lump D put into the rotary perforated plate 1 is pulverized over a wide falling area by the two sets of pulverizing means F, so that a more excellent separation processing capacity for the large clay lump D is exhibited.

Further, as shown in FIG. 9, a batch-type separation apparatus 400 for excavated soil and sludge according to the fourth embodiment shown in FIG. 9 may be used. The excavated soil and sludge-separated soil separation apparatus 400 includes a rotary perforated plate 1 that is driven to rotate with its axial direction being substantially horizontal, a rotary brush body 5 provided in the rotary perforated plate, A crushing means F comprising a crushing plate 11 in contact with the crushing means; a plurality of crushing means R provided to correspond to the crushing means of the rotary porous plate; And the input port I of the clay lump D
The right end is provided with a discharge port O for sand D2.

In the apparatus 400 for separating soil from excavated soil and sludge according to the fourth embodiment, the clay D1 and the sand D
Excavated soil and sludge containing clay ingots mixed with 2 are put into a rotating perforated plate in a predetermined amount, lifted to a high place by this rotation, dropped between the rotating brush body 5 and the crushing plate 11 and crushed. After that, it is discharged to the bottom of the rotary perforated plate 1. Furthermore,
Water W is sprayed on this to dissolve the clay lump with water, and the clay and the like are forcibly filtered through the mesh 1M. This operation can be continuously performed until the clay lumps D disappear.

According to the apparatus 400 for separating soil from excavated soil and sludge according to the fourth embodiment of the present invention, similarly to the above embodiments, the clay lump D put into the rotary porous plate 1 is pulverized by the pulverizing means F. Since it is subjected to forced filtration by water jetting, it has the effect of exerting a separation treatment capacity for a large clay lump D, being capable of treating in a single step, and requiring a small installation space.

Further, the apparatus 500 for separating soil from excavated soil and sludge according to the fifth embodiment shown in FIGS. The plate 50 is spirally arranged in the rotary perforated plate 1 from the input side to the discharge side. Other configurations are the same as those in the first embodiment. In the separation processing apparatus 500 according to the fifth embodiment for the excavated soil and sludge, the excavated soil and sludge including the clay mass in which the clay D1 and the sand D2 are mixed are put into the rotary perforated plate and the scraping plate. 50
Is transferred in the axial direction, and continuously subjected to pulverization by a plurality of pulverization means and injection means and forced filtration of clay or the like. In the case of the sedimentation processing apparatus 400 for excavated soil and sludge according to the fifth embodiment, the same operation and effect as those of the first embodiment are exerted.

Further, a pulverizer F and an injection means R may be separately provided as in the apparatus 600 for separating and separating soil from excavated soil and sludge according to the sixth embodiment shown in FIG. The crushing means F includes a rotating brush body 5 and a crushing plate 11 elastically abutting against the rotating brush body 5. The spraying means R is for disposing the clay lump D on a conveyor 60 using a perforated plate such as a wire mesh, and injecting water toward the clay lump D. These may be provided separately as devices or may be arranged in series.

According to the apparatus 600 for separating soil from excavated soil and sludge according to the sixth embodiment, D1 such as clay and D2 such as sand
The excavated soil and sludge containing clay ingots, which are mixed, are first introduced into the crushing means F, where crushing is performed. Then, it is injected into the injection means R at the same time as or after the pulverization. The injection means R is a conveyor 6 using a perforated plate such as a wire mesh.
The clay lump D is put on 0 and water is sprayed toward the clay lump D.
Thus, the clay or the like D2 is forcibly filtered from the clay mass D. About the large clay lump D, after pulverization by the pulverizing means F, re-injected into the pulverizing means F by the not-shown transporting means, or after forcibly filtering the clay or the like D2 by the injecting means R, the separated material is transferred (not shown) By re-introducing into the crushing means F by means, it is possible to continuously process until the clay lumps D disappear.

According to the sedimentation processing apparatus 600 for excavated soil and sludge according to the sixth embodiment, the clay lump D put into the rotary porous plate 1 is pulverized by the pulverizing means F in the same manner as in the above embodiments. Since it is subjected to forced filtration by water injection, the ability to separate large clay lumps D is exhibited.

[0045]

As described in detail above, claim 1 of the present invention
According to 2, the excavated soil and sludge containing the clay mass in which clay and sand are mixed are introduced between the rotating brush body of the grinding means and the grinding plate abutting on the peripheral surface of the rotating brush body, and the clay mass is removed. Breaking apart between the rotating brush body and the crushing plate, crushing finely, placing the clay mass crushed by the crushing means on the perforated plate, spraying water, and forcibly filtering clay etc. from the holes. As a result, even large clay lumps can be reliably separated.

According to the third aspect of the present invention, excavated soil and sludge containing clay lumps in which clay and the like are mixed with sand and the like are put into a rotary perforated rotary plate, lifted to a high place, and dropped into crushing means. Since pulverization and forced filtration of clay or the like are repeated cyclically, even a large clay lump can be efficiently separated in a single step.

According to the fourth and fifth aspects, the excavated soil and sludge containing the clay mass in which clay and the like are mixed with the sand and the like are put into the rotary perforated plate which is driven to rotate, and transferred in the rotary perforated plate. Since the powder is continuously dropped into the crushing means, the crushing and the forced filtration of the clay or the like are repeated, so that even a large clay lump can be continuously and efficiently separated in a single step.

According to the present invention, the crushing plate of the crushing means is elastically brought into contact with the peripheral surface of the rotating brush body, and
Since the reciprocating member is moved backward from the rotating brush body, the crushing plate retreats when gravels are introduced, and the crushing plate can pass smoothly and smoothly without breakage of the crushing means.

According to the seventh aspect, since the high-pressure water injection means is arranged on the outer peripheral surface of the rotary perforated plate, even if sand or the like is clogged in the mesh, the sand or the like can be blown off and washed. , The forced filtration action can be reliably maintained.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention;
It is a side view of the separation processing apparatus according to the soil of sludge.

FIG. 2 is a view showing a first embodiment of the present invention;
It is sectional drawing of the separation processing apparatus according to the soil of sludge.

FIG. 3 is a view showing a first embodiment of the present invention;
It is principal part sectional drawing of the separation processing apparatus according to the soil of sludge.

FIG. 4 is a view showing a first embodiment of the present invention;
It is a partial view of the separation processing apparatus according to the soil of sludge.

FIG. 5 is a view showing a first embodiment of the present invention;
It is an action figure of the separation processing apparatus according to the soil of sludge.

FIG. 6 is a view showing a first embodiment of the present invention;
It is a flowchart figure of the separation processing method according to the soil of sludge.

FIG. 7 is a view showing a second embodiment of the present invention.
It is sectional drawing of the separation processing apparatus according to the soil of sludge.

FIG. 8 is a view showing a third embodiment of the present invention.
It is sectional drawing of the separation processing apparatus according to the soil of sludge.

FIG. 9 is a view showing a fourth embodiment of the present invention, and is a side view of a batch type soil separation apparatus.

FIG. 10 is a view showing a fifth embodiment of the present invention, and is a side view of a continuous type soil separation processing apparatus.

FIG. 11 is a view showing a fifth embodiment of the present invention, and is a perspective view showing a schematic arrangement of a scraping plate.

FIG. 12 is a view showing a sixth embodiment of the present invention, and is a side view of a separation type soil separation apparatus.

[Explanation of symbols]

 Reference Signs List 1 rotating porous plate 1M mesh 3,4 roller 5 rotating brush body 11 crushing plate 13 spring member 21 scraping plate 23 guide plate 25 discharge plate 40 collection tank A input side B discharge side D clay lump D1 clay D2 sand etc. F crushing Means H Hopper M Motor P Drainage pipe R Injection means W Water 100 Separation treatment device according to soil type

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Claims (7)

[Claims] A crushing means comprising a rotatable rotatably mounted rotatable rotating brush body and a crushing plate abutted on the peripheral surface of the rotating brush body includes a clay mass in which clay and sand are mixed. Excavated soil and sludge are charged, and the clay mass is crushed between the rotating brush body and the crushing plate, and water is sprayed on the perforated plate to the crushed clay mass by the crushing means so that the clay or the like is forcibly filtered. A method for separating soil from excavated soil and sludge according to soil characteristics. 2. A grinding means comprising a rotating brush body rotatably mounted and driven to rotate, and a grinding plate abutting on a peripheral surface of the rotating brush body, and a clay mass pulverized by the grinding means on a perforated plate. And an injection means for forcibly filtering clay and the like by injecting water with the above method. 3. A rotary perforated plate which is driven to rotate, a rotary brush body which is disposed in the rotary perforated plate, is rotatably mounted and is rotatably driven, and a crushing plate which is in contact with a peripheral surface of the rotary brush body. Crushing means, and a spraying means for spraying water to the clay mass discharged from the crushing means disposed corresponding to the crushing means in the rotary perforated plate and forcibly filtering clay and the like, Separation equipment for excavated soil and sludge. 4. The rotary perforated plate is inclined forward and downward from the input side to the discharge side, and a plurality of crushing means and injection means are disposed in the rotary perforated plate in the axial direction. The separation treatment apparatus according to claim 3, wherein the excavated soil and sludge are separated by soil type. 5. The rotary perforated plate is arranged substantially horizontally in the axial direction, a scraping plate is spirally disposed in the rotary perforated plate from an input side to a discharge side, and is disposed in the rotary perforated plate in an axial direction. 4. The apparatus according to claim 3, wherein a plurality of pulverizing means and injection means are disposed in the excavated soil. 6. A crushing plate of the crushing means, wherein the crushing plate is elastically brought into contact with a peripheral surface of the rotating brush body and retreats from the rotating brush body. 4
Or the separation treatment device for excavated soil and sludge according to 5 above. 7. The excavated soil as claimed in claim 3, wherein high-pressure water injection means is arranged on an outer peripheral surface of said rotary perforated plate to remove sand or the like clogged in said holes.・ Sludge separation equipment by soil type.