JPH0995970A - Muddy water separation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a space for processing muddy water and make transport of mud easy. SOLUTION: A reaction tank 10 in which a flocculant cagulating mud is mixed with muddy water and the water and mud are let flow while separatively reacting them, is inclinedly arranged, and a water discharge port 13 and a mud discharge port 14 respectively discharging water and mud are provided on the lower end of the inclination. Meanwhile, a carrying conveyor unit 20 circulatingly moving a mesh-like carrying belt 21 of which both sides are made coarse and the center part is made fine for carrying muddy water from the mud discharge port 14 while separating it into water and mud, is arranged on the lower part of the reaction tank 10. Hereby a large storage reservoir is unnecessary to be formed, and a wide installation space is unnecessary. Even in a densely built-up district and the like, muddy water separation process is efficiently performed only by carrying in and providing this device, without possibility causing an environmental problem and much cost and time become unnecessary. Further, separated water is surely not accumulated on the conveyor, and hence the muddy water processing efficiency is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muddy water separator for separating water from mud mixed with cement, earth and sand and water to extract earth and sand. The present invention relates to a muddy water separator that lowers the water content in mud so that it can be transported and discharges it.

[0002]

2. Description of the Related Art At construction sites such as tunnel construction, road construction and dam construction, mud and mud mixed with cement, soil, sand and water is usually discharged. If these mud is discharged as it is, It causes the destruction of the natural environment such as polluting rivers. Therefore, conventionally, water is separated from muddy water, which is generally mixed with cement, soil, sand, and water, and this water is treated as drainable water before it is drained to a river, and lumps of mud are transported by dump trucks, shovel trucks, and other transport vehicles. After being hardened to a specified hardness, it is transported to a disposal site such as a landfill or a landfill for treatment. However, since it is necessary to lower the water content to some extent so that these mud can be transported, water and mud are currently separated by the method shown in FIG.

This is to make a reservoir 100 for storing muddy water near a construction site, etc., and divide the reservoir 100 into a part for storing the muddy water and a part for separately storing the water separated from the muddy water. Partitioning is performed with a mesh-like separating net 101, and a coagulant is added to the muddy water accumulated in the muddy water collecting portion to precipitate sediment, and the water is allowed to flow from the separating net to one reservoir side. Then, this water is taken in by the pump 102, and the water is filtered and discharged into the river.
On the other hand, the mud that has settled and some water is removed to form a lump of desired hardness is scooped from the reservoir 100 and dumped,
The current situation is that they are loaded onto a transportation vehicle such as a shovel car and transported to the treatment site.

[0004]

At present, a large reservoir pond is constructed near the construction site, mud is stored in this pond, and a predetermined amount of a coagulant is added to the pond to store water and mud. Although they are separated by sedimentation and treated separately, this pond requires a large area, so there is no installation space especially in dense residential areas or near houses, and there are many problems such as environmental problems. . Also, there are various problems such as making such a reservoir every time the construction site changes, and when the construction is completed, it is necessary to refill the reservoir, which requires a great deal of cost and time. .

A first object of the present invention is to provide a muddy water separating apparatus which solves the above problems, reduces the space for muddy water treatment, and facilitates the transportation of the mud, and the second object of the present invention. An object is to drain water separated from muddy water efficiently and surely while it is being carried by a carrying conveyor. A third object of the present invention is to efficiently and continuously operate the muddy water separating device without failure. To do so.

[0006]

SUMMARY OF THE INVENTION A first object of the present invention is to:
In separating water from muddy water in which cement, sand, and water are mixed, a reaction tank 1 in which muddy water is mixed with a coagulant for aggregating mud to cause water and mud to separate and react while flowing in one direction
0 is arranged in an inclined manner at the upper part, and a drain port 13 and a sludge outlet 14 for discharging water and mud are provided at the lower inclined end of the reaction tank 10, while the sludge outlet 14 is provided at the lower part of the reaction tank 10. This is achieved by further arranging the transport conveyor unit 20 that circulates and moves the mesh-shaped transport band 21 that transports the muddy water discharged from the water while separating it into water and mud.

A second object of the present invention is that, in the above-mentioned structure, the conveyor belt 21 is a mesh-shaped belt having rough sides and a fine center, and the conveyor belt unit 20 has a predetermined interval above the conveyor belt 21. And a forming roller 27 having both ends rotatably supported is disposed across
In addition, the forming roller 27 is a taper roller having a thin center and thick ends, and the transport conveyor unit 20 is inclined forward with an upward slope. Further, the transport conveyor unit 20 has a side wall 23 of the transport band 21 and a guide plate 24. This can be achieved by adopting all of the constitutions in which the drainage area A is provided between or and any one of them if necessary.

A third object of the present invention is to provide a cleaning unit 30 in which a cleaning nozzle 31 is directed to at least the movable part and the lower surface of the transfer belt 21 in the transfer conveyor unit 20, and the cleaning nozzle 31 is connected by a pipe 32. This is achieved by adopting a configuration in which

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1, reference numeral 10 denotes a reaction tank having an inclination that allows mud to flow down naturally. This reaction tank 10
The tilt can be adjusted by the reaction tank tilt adjusting jack 2 fixed on the lower machine base 1, and the speed at which the muddy water flows is adjusted by adjusting this tilt. A plurality of turbulent flow generating rods 11 are planted in a staggered manner on the upper part of the reaction tank 10. When muddy water and a predetermined amount of polymer coagulant (not shown) are charged above the turbulent flow generating rods 11, these are generated. It is poured down and mixed. Further, below the position where the turbulent flow generation rod 11 is planted, a baffle plate 1 having a space above and below is provided to limit the flow of muddy water by a predetermined amount.
2 are arranged at predetermined intervals in the flow-down direction of the plurality of reaction tanks 10 so that the water is separated from the muddy water little by little. At the lower end of the slant of the reaction tank 10, there are a drain port 13 for draining the water above the mud to the outside and a drain port 14 for flowing the mud downward. The mud from this drain port 14 is the reaction tank 10. Is installed in the lower part of the machine base 1 and is loaded on the carrier belt 21 of the carrier conveyor unit 20 for separating water and mud contained in the machine base 1. The machine base 1 has a frame structure and guides the circulating movement of the conveyor chain 22 which constitutes the transfer conveyor unit 20. The conveyor chain 22 has a structure in which it is circulated and moved by a drive motor 3 fixed to the machine base 1.

The transport belt 2 of this transport conveyor unit 20
As shown in FIG. 2, reference numeral 1 denotes a mesh-shaped belt-like body, and the mesh-shaped carrier belt 21 has rough sides on the moving direction and a relatively fine central portion, and both sides of the conveyor chain 22. The edges are fixed together. Further, side walls 23 are formed on both side edges so that mud does not fall from the side edges. The conveyor belt 21 is located slightly above the conveyor belt 21 on both sides of the conveyor belt 21.
A guide plate 24 is arranged along the traveling direction of the above, and as shown in FIG. 1, innumerable small holes 25 for draining mud water are formed in this guide plate 24. The guide plate 24 is usually formed of a punching metal plate and extends to the discharge end of the conveyer unit 20, and a space is provided between the side wall 23 and the guide plate 24 to form a draining area A. There is.

On the other hand, as shown in FIG.
At the lower end of 4 is a skirt 2 made of rubber or soft synthetic resin
6 is attached, which allows the mud to transport mud during transport 2
It is designed so that it does not go out from 1 to both sides. Further, a forming roller 27 for forming the surface of the mud conveyed in the conveying belt 21 into a flat state is formed slightly in front of the middle of the conveying conveyor unit 20 while having a predetermined space between the forming roller 27 and the conveying belt 21. Both ends are supported and arranged so as to be rotatable and height-adjustable across the band 21, so that the water on the surface of the mud is discharged to both sides of the carrier band 21. Incidentally, the forming roller 27 may be a taper roller having a thin center and thick both ends so that the surface of the mud is shaped like a mountain with a high center. Alternatively, a taper roller having one end thick and the other end thin may be used. As a result, the surface of the mud can be inclined to one side, and water can be efficiently drained.

Further, as shown in FIG. 4, the front of the transport conveyor unit 20 is inclined upward, and the inclination can be adjusted by the discharge end inclination adjusting jack 4. Increasing this angle reduces the amount of water discharged along with the mud. The front end of the transport conveyor unit 20 is a discharge end for discharging mud separated from water and having a somewhat reduced water content,
In this way, the mud having a predetermined hardness from which water has been removed is discharged. On the other hand, the water separated from the mud collects in a saucer (not shown) arranged below the transport conveyor unit 20, and is reused as water for cement kneading or water for washing, or is filtered. It is designed to drain into rivers.

For this reason, when the muddy water and the polymer flocculant are supplied to the reaction tank 10 according to the amount of the muddy water supplied, they flow down while being mixed in the reaction tank 10. Water is gradually separated from the mud due to the reaction with the coagulant during this flow. Since a plurality of baffle plates 12 are arranged at intervals while flowing down the muddy water, the water and the mud can be effectively separated. After this, the water separated to some extent in the reaction tank 10 is drained from the drain port 13 at the lower end of the reaction tank 10, and the mud is placed on the transport belt 21 which is circulatingly moved downward from the mud outlet 14.

The mud placed in this manner is subsequently supplied forward on the conveyor belt unit 20. The water separated during the movement of the conveyor belt 21 is the guide plate 24 and the mesh conveyor belt 21. Will be subsequently drained. On the other hand, since the surface of the mud is flatly formed by the forming roller 27 during the conveyance, the water accumulated on the surface of the mud is drained from both sides of the conveying belt 21 and accumulated in the lower tray. As a result, the water and the mud can be reliably separated, the water in the saucer can be effectively used for other purposes, and the mud can be easily transported.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the practice of this invention, muddy water is reliably separated into water and mud. However, since mud adheres frequently to this muddy water separating device and the conveyor belt 21 is clogged, this can be avoided as much as possible. Must be excluded. Therefore, a cleaning unit 30 as shown in FIG. 5 is arranged to clean the movable part of the conveyor unit 20 and the conveyor belt 21, and the cleaning nozzle 31 of the cleaning unit 30 needs the movable part of the conveyor unit 20. It is placed toward the part. In addition to this, a plurality of cleaning nozzles 31 are attached on the moving path of the conveyor chain 22 to which the conveyor belt 21 of the conveyor unit 20 is fixed and on the return side below the conveyor belt 21 that circulates, with their tips facing each other. The cleaning nozzle 31 is connected via a pipe 32 to a separately installed cleaning water supply device. The cleaning nozzle 31 is also arranged so as to spray cleaning water also on the outside of the guide plate 24.

The washing water supply device is composed of a high-pressure pump 33 and a washing water storage tank 34, and is adapted to work together during operation of the muddy water separating device. For this reason, the transport conveyor unit 20 is always prevented from adhering mud mainly in its movable parts, and the transport belt 21 and the side wall 23 are also prevented from being clogged, so that a constant muddy water separation process is performed.

[0017]

EFFECTS OF THE INVENTION As is apparent from the above-described embodiments, the present invention is characterized in that, in the separation of water from mud mixed with cement, soil, sand and water, a high molecular flocculant for coagulating mud is mixed with the mud. The reaction tank 10 that causes the muddy water to flow down in one direction while separating and reacting the water and the mud is inclinedly arranged at the upper part, and the muddy water from the reaction tank 10 is separated into the water and the mud at the lower part of the reaction tank 10. Since it is a device in which the transfer conveyor unit 20 that circulates the mesh-shaped transfer belt 21 to be transferred is arranged, it is not necessary to make a large reservoir near the construction site as in the conventional case, and a large installation space for this is not required. become.

Further, even in a densely packed house, near a house, etc., the muddy water separation treatment can be efficiently carried out only by carrying in and installing the device, so that there is no fear of environmental problems, and a great deal of cost and time are not required. become. Moreover, the separated water is drained without being accumulated on the conveyer by providing the belt-shaped conveyor belt with coarse mesh on both sides and finer center, improving the efficiency of muddy water treatment and reducing the amount of mud separated from water. The throughput is reduced. Further, since the cleaning water is sprayed on the movable part and the transport zone, mud does not remain on the movable zone, the breakdown of the device is reduced, the life is long, and the transport zone is clogged. There is a peculiar effect such as a constant continuous operation without being required.

[Brief description of drawings]

FIG. 1 is an overall front view showing the present invention.

FIG. 2 is an enlarged plan view showing a transport belt.

FIG. 3 is a side view of FIG.

FIG. 4 is a partially enlarged front view showing a discharge end of the transfer conveyor unit.

FIG. 5 is an explanatory diagram of a cleaning unit used in the present invention.

FIG. 6 is an explanatory diagram showing a conventional example of the present invention.

[Explanation of symbols]

 1 machine stand 2 jack for adjusting tilt of reaction tank 3 drive motor 4 jack for adjusting tilt of discharge end 10 reaction tank 11 turbulent flow generation rod 12 baffle plate 13 drainage port 14 mud discharge port 20 transport conveyor unit 21 transport belt 22 conveyor chain 23 sidewall 24 Guide Plate 25 Small Hole 26 Skirt 27 Forming Roller 30 Cleaning Unit 31 Cleaning Nozzle 32 Piping 33 High Pressure Pump 34 Cleaning Water Storage Tank A Draining Area

Claims (7)

[Claims] 1. In the separation of water from muddy water in which cement, soil, sand and water are mixed, the muddy water is mixed with a coagulant for aggregating the mud to separate and react the water and the muddy water in one direction. The reaction tank 10 to be fluidized is arranged at an upper part in an inclined manner, and a drain port 13 and a mud discharge port 14 for respectively discharging the water and the mud are provided at the lower inclined end of the reaction tank 10, while the reaction tank 1 is provided.
A muddy water separation device, in which a transport conveyor unit 20 that circulates and moves a mesh-shaped transport band 21 that transports muddy water discharged from the mud discharge port 14 while further separating it into water and mud is arranged at the lower part of 0. . 2. The muddy water separating apparatus according to claim 1, wherein the conveying band is a mesh-shaped band having rough sides and a fine center. 3. The conveyor belt unit has a forming roller 27 which has a predetermined space above the conveyor belt 21 and whose both ends are rotatably supported across the conveyor belt 21. The muddy water separator according to claim 1 or claim 2. 4. The muddy water separating apparatus according to claim 3, wherein the forming roller is a tapered roller having a thin center and thick ends. 5. The muddy water separation device according to claim 1, wherein the front of the transport conveyor unit is inclined upwardly. 6. The conveyor belt unit has a draining area A between the side wall 23 of the conveyor belt 21 and the guide plate 24, claim 1, claim 2, claim 3 or claim 6. The muddy water separator according to 5. 7. The conveyor unit has at least a movable unit and a cleaning unit 30 which faces the cleaning nozzle 31 toward the lower surface of the return side of the conveyor belt 21 which circulates, and which is connected to the cleaning nozzle 31 by a pipe 32. The muddy water separation device according to claim 1, claim 2, claim 3, claim 5, or claim 6 characterized in that.