JP2001082068A - Earth and sand separation device and separation system using the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earth and sand separation device adaptable to the properties of earth, by providing a bore adjusting mechanism for adjusting an underflow bore. SOLUTION: The underflow nozzle 60 of a cyclone 30 is provided with a bore adjusting mechanism 61 for adjusting an underflow bore, and also is equipped with a bore adjusting motor 62 for driving the mechanism 61, and a motor control panel 63 for operating the motor 62. At first, sludge and drain are charged on a screen to classify and sort the earth particles of relatively coarse grains, and then the earth particles are placed into a cyclone 30 to classify and sort the earth particles of fine particles. At that time, the mechanism 61 is driven to adjust an underflow bore, by operating the motor 62 by the panel 63 in accordance with the properties of earth and sand contained in the sludge and drain. Resultantly the sludge and drain can be sorted and discharged by the underflow bore adpapted to earth quality at that time in accordance with the change of the earth quality properties of the sludge and drain, thereby improving an earth and sand separation efficiency in the cycloton 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sediment separation apparatus for separating sediment from wastewater and a sediment separation system using the same.

[0002]

2. Description of the Related Art When excavating using a muddy water circulation type excavator such as a horizontal multi-shaft excavator, muddy water generated by excavation is separated from excavated sediment by a sediment separation device and then subjected to a predetermined process. It is reused as mud again.

FIG. 8 is a side view showing an example of a conventional sediment separating apparatus.

In the earth and sand separating apparatus shown in FIG. 1, a frame 5 on which a vibrating body 6 is installed is attached to a gantry 8 via an elastic bearing 7 made of a spring, and screens 1, 3, and 4 are attached to the frame.
An iron plate 2 called a blind plate is attached, and a cyclone 11 is provided above the screen 1.

Here, the vibrating body 6 is inclined at a predetermined angle from the vertical direction, and separates the sediment on the screen by the vibration of the horizontal component while separating the sediment on the screen by the vibration of the vertical component. It is designed to be transferred to the discharge side.

[0006] The cyclone 11 lowers heavy soil particles as underflow by rotating muddy water supplied from the slurry pump 10 along the cone wall, and raises light soil particles and water as overflow. It has become.

When sediment separation is performed by using such a sediment separation apparatus, first, the muddy water sent from the excavation site is sequentially injected into the screens 3 and 4 via the input chute 12, and the slag and solid are discharged. Separates earth and sand of several mm order or more such as tying silt.

On the other hand, the under muddy water that has passed through the screen 4 is temporarily stored in a dewatering receiving tank 9 and then sent to a cyclone 11 by a slurry pump 10 for centrifugation as described above.

Next, a cyclone-under muddy water is introduced into the screen 1 to separate fine particles of several tens μm or more, and muddy water containing fine particles that cannot be separated by the screen 1 is dropped on the blind plate 2. Discharge outside.

[0010]

Here, the properties of the soil contained in the muddy water change from moment to moment, and in particular, when excavating vertically downward such as an underground continuous wall, the time change of the soil quality is remarkable. However, in the above-mentioned sediment separation apparatus,
The inability to adapt to changes in soil quality caused a problem of poor sediment separation efficiency.

The present invention has been made in consideration of the above-described circumstances, and has as its object to provide a sediment separation apparatus that can be adapted to soil properties that change from moment to moment, and a sediment separation system using the same.

[0012]

According to a first aspect of the present invention, there is provided a sediment separating apparatus according to the present invention, comprising: a screen for classifying and separating soil particles contained in a fluid by vibration; A cyclone that classifies and sorts soil particles contained in the fluid that has passed through by centrifugal force,

An underflow nozzle of the cyclone is provided with a diameter adjusting mechanism for adjusting the underflow diameter, and a diameter adjusting motor for driving the diameter adjusting mechanism and a motor operating means for operating the diameter adjusting motor are provided. Things.

Further, according to a second aspect of the present invention, there is provided a sediment separation system comprising: a screen for classifying and separating soil particles contained in a fluid by vibration; and a centrifugal separator for soil particles contained in the fluid passing through the screen. A sediment separation apparatus comprising a cyclone for classifying and sorting by force, a caliber adjusting motor driving the caliber adjusting mechanism, a caliber adjusting mechanism for adjusting an underflow caliber in an underflow nozzle of the cyclone, and the caliber. Earth and sand separating device comprising a motor operating means for operating the adjusting motor, and a monitoring camera for monitoring the state of discharging the earth from the screen,
Image display means for displaying an image taken by the surveillance camera.

In the sediment separation apparatus according to the first aspect of the present invention, the fluid such as the muddy water is first classified by a screen into relatively coarse-grained soil particles, and then driven into a cyclone to be fine-grained. In the classification and sorting by such a cyclone, the diameter adjusting mechanism is driven by operating a diameter adjusting motor by a motor operating means in accordance with the properties of earth and sand contained in the fluid to drive the underflow diameter. To adjust.

In this case, the diameter of the underflow changes according to the change in the soil properties, and even if the properties of the soil contained in the fluid change every moment, the soil does not
Sorting is performed with an underflow diameter suitable for the soil quality at that time, and the sediment separation efficiency is greatly improved.

In the sediment separation system according to the second aspect of the present invention, the fluid such as muddy water is first classified by a relatively coarse soil particle by a screen, and then is driven into a cyclone to be fine soil particles. In the classification and sorting by such a cyclone, the surveillance camera installed at an appropriate position photographs the discharging side of the screen, and displays the image photographed by the surveillance camera on the image display means. And monitor the status of unloading from each screen. Then, while monitoring the soil discharging state in this way, by operating the caliber adjusting motor with the motor operating means according to the properties of the earth and sand contained in the fluid, the caliber adjusting mechanism is driven to adjust the underflow caliber. .

In this way, the diameter of the underflow changes following the change in the soil properties, and even if the properties of the soil contained in the fluid change from time to time, the soil will not
Sorting is performed with an underflow diameter suitable for the soil quality at that time, and sediment separation efficiency is greatly improved.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a sediment separation apparatus and a sediment separation system using the same according to the present invention will be described with reference to the accompanying drawings. It is to be noted that the same reference numerals are given to components and the like that are substantially the same as those in the conventional technology, and description thereof will be omitted.

(First Embodiment)

FIGS. 1 to 6 show a sediment separating apparatus according to this embodiment. As can be seen from the overall view of FIG. 1, the sediment separation apparatus 21 according to the present embodiment is configured such that the upper screen 31 and the lower screen 32, which are the lower screens, are arranged in two stages in the internal space above the dehydration receiving tank 20. At the position, a frame 24b in which a screen 33 serving as a middle screen is disposed in an internal space and a screen 24b in which a screen 34 serving as an upper screen is disposed in an internal space, while being attached to a gantry (not shown).
4c are sequentially installed on a gantry (not shown) at a position above the frame 24a.
Is designed to classify and sort the soil particles contained in the wastewater as a fluid by vibration. In addition, sieve 33, sieve 34
Cyclones 30 and 30 are respectively arranged at the upper position, and the cyclones sort and sort soil particles contained in the muddy water passing through the screens 31 to 34 by centrifugal force.

As shown in FIGS. 2 and 3, the cyclone 30 has an underflow nozzle 60 provided with a diameter adjusting mechanism 61 for adjusting the underflow diameter, and a cyclone adjusting motor 62 for driving the diameter adjusting mechanism. A motor operation panel 63 as a motor operation means for operating the diameter adjusting motor;

The caliber adjusting mechanism 61 winds a tightening flat wire 65 around the peripheral surface of a rubber sleeve 64 fitted inside the underflow nozzle 60, and a speed reducer 68.
Adjustment screw 66 to the output shaft of the motor 62
Are connected to each other, and moving nuts 67, 67 are screwed into male screws cut on the peripheral surface of the adjusting screw, and both ends of the above-described tightening flat wire 65 are fixed to each moving nut, respectively. By rotating the adjusting screw 66 in a predetermined direction by the motor 62, the moving nuts 67 and 6 are rotated.
Squeezing the rubber sleeve 64 by expanding the 7 width, or reducing the underflow diameter D _u, loosen the rubber sleeve 64 by narrowing the width of the traveling nut 67 and 67, so that it is possible to increase the underflow diameter D _u It has become.

[0024] Incidentally, in the vicinity of the traveling nut 67, 67 is is provided with a position detecting sensor 69, the distance between the traveling nut, and to be able to measure and hence underflow diameter D _u.

The motor operation panel 63 may be attached to the main body of the sediment separating apparatus 21 or may be installed at a position separated from the main body.

On the other hand, as shown in FIG. 4, the frame 24a is mounted on the frame 22 via a pair of side frames 51, 51 disposed at opposing positions sandwiching the frame from both sides and a coil spring 23a as an elastic bearing. Is installed in the inner space, the upper screen 31 is a screen with a 20 mm opening for sorting and discharging gravel and solid matter of 20 mm or more, and the lower screen 32 is a 3 mm to 20 mm gravel and solid matter. Is a screen with an aperture of 3 mm for sorting and discharging.

As can be clearly seen in FIG. 5, the frame 24b is connected to the frame 2 via a coil spring 23b as an elastic bearing.
The sieve 33 installed in the inner space 2 is a screen having an aperture of 0.45 mm for sorting and discharging sand. Similarly, the frame body 24c is installed on the gantry 22 via a coil spring 23c as an elastic bearing, as can be clearly seen in FIG. 6, and a sieve 34 arranged in its internal space.
Is a screen with an aperture of 0.45 mm for sorting and discharging sand.

As can be seen from FIGS. 1 to 6, the frame 2
The vibrators 25a, 25b, 25c respectively attached to the motors 27a, 27b,
7c, each screen 31 is driven.
While sorting the sediment on -34 by the vibration of the vertical component, the sorted soil is transferred to the discharge side by the vibration of the horizontal component.

By controlling the driving of the motors 27b and 27c so that the vibrating bodies 25b and 25c and the sieves 33 and 34 vibrate in opposite phases and at the same vibrating frequency, the sieves 33 and The low-frequency sound generated from the sieve 34 can be canceled to reduce the low-frequency noise in the vicinity.

The processing flow of the muddy water in the sediment separation apparatus 21 according to the present embodiment will be described. The muddy water pumped from an excavator or the like is first put into a lower screen installed in a frame 24a, and Upper screen 3 of lower screen
Gravel and solid matter of 20mm or more in 1 and 3m in lower net 32
The gravels and solids of m to 20 mm are respectively sorted and stored in the discharging pit 28, and the wastewater from which these are removed is temporarily stored in the dewatering receiving tank 20 and then pumped by the slurry pump 29 to be pumped by the slurry pump 74 μm. It is driven into a cyclone 30 having a classification point of １００100 μm. Then, the under mud of the cyclone 30 is supplied to the screen 3 which is a middle screen.
3. The sand is sorted into the upper screen 34, the sand is sorted, and stored in the discharging pit 28.
The muddy water from which the sand has been removed is primarily stored in the dehydration receiving tank 20 again.

Here, in the wastewater, first, relatively coarse soil particles are classified and screened by screens 31 and 32.
The fine soil particles are sorted and sorted by the cyclone 30. When sorting by the cyclone 30, the diameter adjusting motor 62 is controlled by the motor operation panel 63 in accordance with the properties of the earth and sand contained in the wastewater. By operating, the diameter adjustment mechanism 61 is driven to set the underflow diameter D
Adjust _u .

More specifically, for example, when it is desired to increase the concentration of under mud, the moving nut 6
The width of 7,67 operates the motor operation panel 63 so as to extend diaphragm rubber sleeve 64, may be reduced underflow diameter D _u.

Here, in order to examine the properties of the sediment contained in the muddy water, the particle size distribution of the muddy water driven into the cyclone 30 is measured, and the particle size distribution of the muddy water immediately after being pumped from an excavator or the like. Measuring the weight of fine sand discharged from the screens 33 and 34 or the water content thereof,
A method of observing the discharge state of fine sand discharged from the screens 33 and 34 can be considered.

[0034] Thus, underflow by adjusting the diameter D _u, becomes the underflow diameter D _u varies following the soil changes in discharge muddy water in accordance with the properties of the sediment contained in the exhaust mud, waste mud even properties of sediment is changing every moment contained,該土sand is the underflow diameter selected by D _u earth removal suitable for soil at that time.

As described above, according to the sediment separating apparatus 21 of the present embodiment, the diameter adjusting mechanism 61 is operated by operating the motor operation panel 63 according to the properties of the sediment contained in the muddy water.
In so underflow diameter D _u was adjusted so, it is possible to follow the underflow diameter D _u Soil changes in discharge mud.

Therefore, it has been pumped from an excavator or the like.
The soil quality of the muddy water is occasionally changed, for example, from gravel to sand and from sand to fine sand.
Change, and as a result, the discharge
Even if the soil properties of the mud change,
Suitable underflow diameter D _uCan be sorted out by
And greatly improved the sediment separation efficiency in the cyclone
Can be done.

Further, conventionally, even when a plurality of sediment separators are required in accordance with a change in soil quality,
According to the sediment separation apparatus according to the present embodiment, only one device is required, and the area occupied by the plant can be reduced.

(Second Embodiment)

Next, a sediment separation system using the sediment separation apparatus according to the first embodiment will be described. The first
Components and the like that are substantially the same as those in the embodiment are denoted by the same reference numerals, and description thereof is omitted.

FIG. 7 shows a sediment separation system using the sediment separation device 21. As you can see in the figure,
The sediment separation system 41 according to the present embodiment includes a sediment separation device 21, an upper screen 31 and a lower screen 32 which are lower screens of the sediment separation apparatus, a screen 33 which is a middle screen,
A surveillance camera 42 for monitoring the state of unloading from the screen 34 serving as an upper screen, a monitor 45 as an image display means for displaying an image taken by the surveillance camera, and a camera operation panel 44 for remotely controlling the surveillance camera 42 The camera operation panel 44 and the monitor 45 are arranged in an operation control room 43 installed at a position separated from the sediment separation device 21.

Here, the sediment separating apparatus 21 is the first type.
Since it is the same as the embodiment, the description thereof is omitted here.

The surveillance camera 42 includes an upper screen 31 and a lower screen 32 as lower screens, and a screen 3 as a middle screen.
3. The installation position is appropriately selected so that the state of unloading from the screen 34 serving as the upper screen can be accurately imaged. Further, it is preferable that the camera control panel 44 be configured so that operations such as pan, tilt, and zoom can be remotely controlled.

The motor control panel 6 of the earth and sand separating device 21
3 is arranged at an appropriate position in the operation control room 43 so that the operation can be performed while watching the monitor 45.

In the sediment separation system 41 according to the present embodiment, similar to the processing flow described in the first embodiment,
First, relatively coarse soil particles are classified and screened by the screens 31 and 32, and thereafter, they are driven into the cyclone 30 to finely sort the fine soil particles.
In the classification and sorting, the surveillance camera 42 is appropriately remote-controlled through a camera operation panel 44 installed in the operation control room 43 to photograph the discharging side of each screen, and the image photographed by the surveillance camera is taken. It is displayed on the monitor 45 to monitor the state of unloading from each screen. By operating the caliber adjusting motor 62 with the motor operation panel 63 according to the properties of the earth and sand to be unearthed while monitoring the unloading status in this way, the caliber adjusting mechanism 61 is driven to drive the underflow caliber. Adjust _Du . Specifically, screen 3
Monitoring camera for fine sand discharged from 3 and 34
Observe in step 2.

[0045] Thus, underflow by adjusting the diameter D _u, becomes the underflow diameter D _u varies following the soil changes in discharge muddy water in accordance with the properties of the sediment contained in the exhaust mud, waste mud even properties of sediment is changing every moment contained,該土sand is the underflow diameter selected by D _u earth removal suitable for soil at that time.

As described above, according to the sediment separation system 41 according to the present embodiment, the motor operation panel 63 is operated according to the properties of the sediment contained in the muddy water, and the underflow diameter D is adjusted by the diameter adjusting mechanism 61. I tried to adjust _u ,
It can follow the underflow diameter D _u Soil changes in discharge mud.

Therefore, it has been pumped from an excavator or the like.
The soil quality of the muddy water is occasionally changed, for example, from gravel to sand and from sand to fine sand.
Change, and as a result, the discharge
Even if the soil properties of the mud change,
Suitable underflow diameter D _uCan be sorted out by
And greatly improved the sediment separation efficiency in the cyclone
Can be done.

Further, conventionally, even when a plurality of sediment separators are required in accordance with a change in soil quality,
According to the sediment separation apparatus according to the present embodiment, only one device is required, and the area occupied by the plant can be reduced.

Further, according to the sediment separation system 41 according to the present embodiment, the state of unloading from each screen is photographed by the monitoring camera 42, and the photographed image is monitored by the monitor 45 to control the motor operation panel 63. Since the operation is performed, the operation of the motor operation panel can be performed accurately and promptly, and the above-described operation and effect of reliably improving the sediment separation efficiency can be achieved.

In the present embodiment, the surveillance camera 42 is remotely controlled by the camera operation panel 44. However, in some cases, this may be omitted and automatic shooting may be performed.

[0051]

As described above, according to the sediment separation apparatus and the sediment separation system using the same according to the present invention, it is assumed that the properties of the sediment change from moment to moment, for example, from gravel to sand and from sand to silt. also, it is possible to select earth removal by underflow diameter D _u which is suitable for soil at that time, a sediment separation efficiency of a cyclone can be greatly improved.

[0052]

[Brief description of the drawings]

FIG. 1 is an overall view of a sediment separation apparatus according to a first embodiment.

FIG. 2 is an overall view of a cyclone provided in the earth and sand separation device according to the first embodiment.

FIG. 3 is a detailed view of the cyclone, and FIG.
(B) is a cross-sectional view taken along line AA of FIG.

4A and 4B are detailed views of a lower screen, in which FIG. 4A is a plan view, and FIG. 4B is a view as seen from the direction of the line CC.

FIGS. 5A and 5B are detailed views of the middle screen, wherein FIG. 5A is a plan view and FIG. 5B is an arrow view as seen from a DD line direction.

FIGS. 6A and 6B are detailed views of the upper screen, wherein FIG. 6A is a plan view and FIG. 6B is a view as seen from the direction of the line EE.

FIG. 7 is an overall view of a sediment separation system according to a second embodiment.

FIG. 8 is a side view of a sediment separation apparatus according to the related art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 21 Sediment separation apparatus 30 Cyclone 31 Upper screen (screen) 32 Lower screen (screen) 33 Screen (screen) 34 Screen (screen) 60 Underflow nozzle 61 Diameter adjustment mechanism 62 Motor for diameter adjustment 63 Motor operation panel (motor operation means)

Continued on the front page (72) Inventor Toshio Nakamura 2-15-2 Konan, Minato-ku, Tokyo Tokyo Main Office (72) Inventor Ning Shigematsu 2-15-2 Konan, Minato-ku, Tokyo Obayashi Tokyo Headquarters (72) Michio Kawase 2nd Kawasawa Industry Co., Ltd., 326 Omosa, Tarui-cho, Fuwa-gun, Gifu Prefecture (72) Inventor Shigetaka Yoshimura 5-10-17 Nishitenma, Kita-ku, Osaka Nishitenma Park Building Hirosawa Machinery F-term (reference) in Sales Co., Ltd. 4D053 AA03 AB04 BC01 BD04 CD01 CG09 DA10 4D066 AA01 AB01 BA03 BA05 BB12 BB23 BB24 BB31

Claims (2)

[Claims] 1. A sediment separation apparatus comprising: a screen for classifying and separating soil particles contained in a fluid by vibration, and a cyclone for classifying and separating soil particles contained in the fluid passing through the screen by centrifugal force. The underflow nozzle is provided with a diameter adjusting mechanism for adjusting the underflow diameter, and a diameter adjusting motor for driving the diameter adjusting mechanism and motor operating means for operating the diameter adjusting motor are provided. Sediment separation equipment. 2. A sediment separation apparatus comprising: a screen for classifying and separating soil particles contained in a fluid by vibration; and a cyclone for classifying and separating soil particles contained in the fluid passing through the screen by centrifugal force. A sediment separating apparatus comprising: an underflow nozzle of the cyclone provided with a diameter adjusting mechanism for adjusting an underflow diameter, and a diameter adjusting motor for driving the diameter adjusting mechanism and motor operating means for operating the diameter adjusting motor. And a surveillance camera for monitoring the status of unloading from the screen, and image display means for displaying an image taken by the surveillance camera.