JP2002066527A - Equipment for making earth and sand and waste concrete material useful, and method of making the same useful - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment for making earth and sand and waste concrete materials useful which is capable of manufacturing useful building materials by recycling the earth and sand and the waste concrete materials. SOLUTION: This equipment comprises a classifying machine A for classifying the feeds fed into the machine by each of their grain sizes and separating sludge t1, a dewatering machine B for dewatering sludge t1 to form sludge cake t2, a crushing machine C for crushing the feeds fed into the machine, a mixer D for mixing waste material crushed stones k1 formed by crushing of the waste concrete materials, dust k2, the sludge cake t2, cement (r) and water (w) to form a liquid-like material mixture and a solidifying means for solidifying the liquid-like material mixture m0 to blocks m1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a facility and a method for making earth and sand and concrete waste materials useful.

[0002]

2. Description of the Related Art A large amount of earth and sand is excavated in road construction, tunnel construction, underground shielding construction, construction sites, and the like. However, many local governments dispose of sediment generated in areas of other local governments. Is prohibited. The current situation is that it is difficult to secure a dump or storage area for a large amount of sediment. On the other hand, a large amount of concrete waste generated when a concrete building is dismantled has no useful use, and it is difficult to dispose of the waste. Concrete waste is illegally dumped, which is a social environmental problem.

[0003]

However, as mentioned above, there is a problem that earth and sand and concrete waste are both troublesome and have no utility value.

[0004] In view of such circumstances, an object of the present invention is to provide a facility and a method for making use of earth and sand and concrete waste capable of manufacturing useful building materials by reusing earth and sand and concrete waste.

[0005]

According to a first aspect of the present invention, there is provided a facility for making waste of earth and sand and concrete waste, which classifies an input material charged into the device for each particle size and separates sludge; Dewatering machine to make sludge cake, crushing machine to crush the input material, and crushed stone, dust, sludge cake, cement and water that crush concrete waste material and liquid mixture And a solidifying means for solidifying the liquid mixture to form a block. The method of claim 2 is to separate the earth and sand into aggregate and sludge, dewater the sludge into sludge cake, crush concrete waste to crushed waste and dust, and crush the waste crushed stone. Mixing the dust, the sludge cake, cement and water into a liquid mixture, solidifying the liquid mixture into blocks, crushing the blocks into block crushed stones,
The method is characterized in that the crushed blocks are classified according to the size of the grains.

[0006] The invention of claim 1 operates as follows.
First, when earth and sand are put into a hopper of a classifier, the classifier can classify the earth and sand for each particle size to obtain aggregate and separate sludge. This sludge is dewatered by a dehydrator to make a sludge cake. On the other hand, when the concrete waste material is put into the hopper of the crusher, the crusher can crush the concrete waste material into crushed waste material, and at this time, dust is generated. Said waste material crushed stone, dust,
The sludge cake, cement and water are mixed by a mixer into a liquid mixture. This liquid mixture is solidified into blocks by the fixing means. This block is crushed by a crusher to make block crushed stone. Further, if the crushed block stones are classified by the size of the particles by a classifier, useful building materials can be manufactured. Therefore, a useful building material can be manufactured by using the discarded sludge cake and concrete waste material as raw materials, and the sludge cake and concrete waste material do not need to be discarded. According to the invention of claim 2, a useful building material can be manufactured using the discarded sludge cake and concrete waste material as raw materials, and it is not necessary to discard the sludge cake and concrete waste material, so that a dumping site and a storage place are not required. .

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a facility for making useful earth and sand and concrete waste material according to the present embodiment. As shown in the figure, the useful equipment of the earth and sand and the concrete waste material of the present embodiment includes a classifier A, a dehydrator B, a crusher C, a mixer D and a form E.

First, the classifier A will be described. FIG. 3 is a plan view of the classifier A and the dehydrator B. FIG. 4 is a plan view of the classifier A. FIG. 5 is a side view of the classifier A. Figures 3-5
In the figure, reference numeral 3 denotes a classifying rotor, which has a substantially cylindrical outer shape, a large diameter at the base end, a small diameter at the front end, and a frusto-conical shape connecting the both ends at the middle part. Although not shown, the internal structure of the classifying rotor 3 is such that an inner tube net, an intermediate tube net, and an outer tube net are mounted concentrically and multiplely. The inner tube net has the largest coarseness, for example, 40 mm. is there. The intermediate tube net is medium mesh, for example, 20 mm. The outer tubular mesh is fine, for example 5 mm.

[0009] Each tubular net is provided with an internal screw so as to feed a material such as earth and sand from the base to the tip. Furthermore, on the outer periphery of the proximal end of the outer tubular mesh,
An external screw 5 is attached. The outer periphery of the external screw 5 is provided with a slight gap from the inner periphery of the muddy water casing 23 described later. The spiral direction of the external screw 5 is such that when the classifying rotor 3 rotates around the axis, an external material such as earth and sand is sent from the base end to the tip.

[0010] Rolling rings 6 and 7 are attached to the base end and intermediate portion of the classifying rotor 3. On the other hand, a pair of left and right rolling rollers 8 is provided on the base upper surface of the portable frame 1.
1 and a pair of left and right rolling rollers 9 are also rotatably mounted on the pedestal 12 on the upper surface of the intermediate portion of the portable frame 1. The rolling rings 6 and 7 of the classifying roller 3 are rotatably in contact with the rolling rollers 8 and 9, and the classifying rotor 3 is rotatable in an inclined state in which the tip is slightly higher than the base end. Supported. A chain wheel 13 is attached to the base end of the classifying rotor 3. This chain wheel 13
When the chain is wound around a chain sprocket rotated by a motor (not shown) and the motor is driven, the classifying rotor 3 rotates.

A hopper 21 and a chute 22 for receiving an input material such as earth and sand are disposed above and outside the base end of the classifying rotor 3. Although not shown, a water injection facility such as a water injection pipe for injecting water into the base end of the classification rotor 3 is provided. Water is supplied to the water injection pipe from a dehydrator B described later.

A muddy water casing 23 is arranged below the outer periphery of the classifying rotor 3 from the base end to the center of the classifying rotor 3. The muddy water casing 23 has a semicircular cross section, and stores mud containing water therein. A first discharge chute 24, a second discharge chute 25, and a third discharge chute 2 are provided below the outer periphery of the classification rotor 3 from the center to the tip of the classification rotor 3.
6 are installed in that order, and the classification rotor 3
A fourth discharge chute 27 is provided at the outlet of the second discharge chute. Note that a safety cover 28 is provided between the second discharge chute 25 and the tip of the classification rotor 3.

The first, second and third discharge chutes 24,
Reference numerals 25, 26, and 27 are provided on the outlet side of the muddy water casing 23 and the external screw 5, the outlet side of the outer cylindrical net, the outlet side of the intermediate cylindrical net, and the outlet side of the inner cylindrical net, respectively. 31
Reference numeral 33 denotes a discharge conveyor, which is provided below the first to third discharge chutes. These discharge conveyors 31 to 33 are:
The base portion is placed on the portable frame 1 and the tip portion is installed so as to extend to the side of the classifier A.

Next, the dehydrator B will be described. FIG. 6 is a side view of the dehydrator B. FIG. 7 is a plan view of the dehydrator B.
FIG. 8 is a rear view of the dehydrator B. FIG. 9 is a view taken along line IX of FIG. 6 to 9, reference numeral 53 denotes a raw water tank, which is provided on substantially one side of the trailer 50 over substantially the entire length. A raw water injection pipe 54 is provided on the upper surface of the raw water tank 53.
Is installed to guide turbid water sent from the outside to the raw water tank 53. A swash plate 55 is attached to an upper portion inside the raw water tank 53, and a scraping screw 56 is arranged at a lower portion. The scraping screw 56 is driven by a motor 57. The lower part of the tip of the raw water tank 53 is a mud collection chamber 58.

The swash plate 55 is provided to accelerate the binding of the floating particles, slide down on the swash plate 55, and quickly settle mud in the tank. The settled sludge is collected in the mud collection chamber 58 by rotating the screw 56. In front of the trailer 50, the medicine tank 7
1. A drug pump 72 and a sulfuric acid band tank 73 are provided, and a polymer flocculant or the like is injected into the raw water tank 53 to facilitate separation of mud and water.

A filter press 61 is provided on the other side of the trailer 50, and a filtered water chute 62 and a cake discharge chute 63 are provided below the filter press 61. The filtered water chute 62 is discharged to a filtered water tank 64.
Is installed. Further, a sludge extraction pump 65 is provided in front of the trailer 50.

The filter press 61 has several tens of square frame-shaped filter plates arranged in series so as to be freely opened and closed, and two filter cloths are sandwiched between each filter plate. It is a known device configured to be opened and closed by a cylinder. To one end of the filter plate group, sludge is drawn out from the sludge collection chamber 58 in the raw water tank 53 by the sludge drawing pump 65 and supplied. Thereafter, when each filter plate is pressurized by a hydraulic cylinder, filtered water is squeezed out of the sludge, and then, when each filter is opened, a sludge cake free of moisture is taken out.

Next, the crusher C will be described. Although not illustrated, the crusher C may be a crusher such as an impeller or a jaw crusher, and is not particularly limited as long as it can crush input materials such as concrete waste material input from a hopper.

Next, the mixer D will be described. Although not shown, the mixer D may be a mixer for ready-mixed concrete, for example, and is not particularly limited as long as it can stir and mix the input materials such as cement, sand, and water input from the hopper.

Next, the mold E will be described. Although not shown, the mold E may be, for example, an iron plate or a wooden plate assembled in a frame shape.

Next, the operation and effect of the facility for making the earth and sand and concrete waste material useful according to the present embodiment will be described. As shown in FIG. 3, the hose 81 connects the sewage casing 23 of the classifier A and the raw water injection pipe 54 of the dehydrator B in advance, and the filtered water tank 64 of the dehydrator B and the hopper 21 of the classifier A. Alternatively, connect a hose 8 between the classifier rotor 3 and the water inlet.
Connect with 2. The relay raw water tank 83 may be placed in the middle of the hose 81, and the relay fresh water tank 84 may be placed in the middle of the hose 82.

FIG. 2 is a flow chart of a method for utilizing soil and concrete waste material according to the present invention. In the figure, earth and sand t0 are excavated from road works, tunnel works, underground shield works, construction sites, and the like. On the other hand, the concrete waste material k0 is a lump of concrete generated when a concrete building is dismantled.

As shown in FIGS. 4 to 6, first, earth and sand t0 is put into the hopper 21, and is put into the inner cylindrical net of the classification rotor 3 by the charging chute 22. Then, water is injected into the inside while rotating the classification rotor 3.

When the classifying rotor 3 rotates, the earth and sand t0 in the classifying rotor 3 is fed from the base end to the tip while being washed with water by the internal screw. At this time, earth and sand with a diameter of 40 mm or less fall into the intermediate tubular net, and stones with a diameter of 40 mm or more are carried to the tip.
It is discharged outside the machine by the chute 27. Further, the earth and sand having a diameter of 20 mm or less falls to the outer tubular net, and for example, sand having a diameter of 20 to 40 mm is carried to the tip of the intermediate tubular net and falls from the third chute 26. In addition, sand having a diameter of 3 to 20 mm
From the aircraft. Mud and fine sand having a diameter of 5 mm or less are discharged to the outside of the machine by mud and fine sand having a diameter of 5 mm or less while being stirred by the external screw 5 in the muddy water casing 23.

Then, the first and third discharge chutes 24-2
The sand discharged at 6 is the first to third conveyors 31 respectively.
At ~ 33, it is conveyed to the side of the classifier A and accumulated. Thus, according to the classifier A, for example, sand of 5 mm or less can be taken out from the first conveyor 31, sand of 5 to 20 mm can be taken out from the second conveyor 32, and 2 mm from the third conveyor 33.
Sand of 0 to 40 mm can be taken out, and coarse sand and pebbles of 40 mm or more can be taken out from the fourth discharge chute 27.
Sand and pebbles taken out of the first to third conveyors 31 to 33 and the fourth discharge chute are aggregates 1a, 1b, 1c.
Can be used as As described above, FIGS.
As shown in FIG.
a, 1b, 1c and sludge t1 (1
1S).

On the other hand, muddy water and mud are contained in the muddy water casing 23 of the classifier A. The muddy water is stirred by the external screw 5 and the sludge t1 is supplied to the dehydrator B.

This sludge t1 is dewatered by the dewatering machine B (12S) to become a sludge cake t2. The fresh water 2 obtained when the sludge t1 is dewatered may be used as water w described later.

On the other hand, the concrete waste material k0 is put into the hopper of the crusher C. When the concrete waste material k0 is crushed by the crusher C, the waste material crushed stone k1 of about 2 to 40 mm is crushed.
Becomes At this time, in addition to the waste material crushed stone k1, the waste material crushed stone k1
Finer dust k2 is also generated (21S).

The sludge cake t2, the crushed waste stone k1, the dust k2, the cement r, and the water w are charged into the hopper of the mixer D at the following mixing weight ratio. The mixture is mixed with stirring by the mixer D to obtain a liquid mixture material m0 (31S). <Mixing weight ratio> Total of sludge cake t2 and dust k2: 40 to 50% Waste material crushed stone k1: 20 to 30% Cement r: 20 to 30% Water w: appropriate amount

The liquid mixture material m0 is poured into a mold E and left to solidify to form a block m1 (32S).
Since the waste material crushed stone k1 having a larger particle size than the sludge cake t2 and the dust k2 is mixed with the liquid mixture material m0, the waste material crushed stone k1 becomes a core and solidifies, so that the strength of the solidified block m1 increases. .

The block m1 is crushed again by the crusher C, for example, a block crushed stone m having a particle size of 40 mm or less.
Make 2 (33S).

The crushed block m2 is put into the hopper of the classifier A, and the crushed block m2 is classified for each particle size (34S). For example, building material m3A less than 5 mm, 5-20
It can be classified by particle size, like building material m3B of 20 mm and building material m3C of 20 to 40 mm.

As described above, according to the facility for utilizing earth and sand and concrete waste material of the present invention, useful building materials m3a, m3b, and m3c are manufactured by reusing discarded soil t0 and concrete waste material k0. As a result, there is no need to discard the earth and sand t0 and the concrete waste material k0, and there is an effect that a dumping place and a storage place are not required.

[0034]

According to the first aspect of the present invention, a useful building material can be manufactured by using the discarded sludge cake and concrete waste material as raw materials, and it is not necessary to discard the sludge cake and concrete waste material. And no storage space is needed. According to the invention of claim 2, a useful building material can be manufactured using the discarded sludge cake and concrete waste material as raw materials, and it is not necessary to discard the sludge cake and concrete waste material, so that a dumping site and a storage place are not required. .

[Brief description of the drawings]

FIG. 1 is a block diagram of a facility for making earth and sand and concrete waste material useful according to the present embodiment.

FIG. 2 is a flowchart of a method for making soil and concrete waste useful according to the present invention.

FIG. 3 is a plan view of a classifier A and a dehydrator B.

FIG. 4 is a plan view of a classifier A.

FIG. 5 is a side view of the classifier A.

FIG. 6 is a side view of the dehydrator B.

FIG. 7 is a plan view of the dehydrator B.

FIG. 8 is a rear view of the dehydrator B.

FIG. 9 is a view taken in the direction of the arrow IX in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aggregate 2 Shimizu t0 Sediment t1 Sludge t2 Sludge cake k0 Concrete waste material k1 Waste material crushed stone k2 Dust r Cement w Water m0 Liquid mixture material m1 Block m2 Crushed stone m3 Building material

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B09B 3/00 301 B09B 5/00 F C04B 18/16 ZAB 3/00 ZABZ F term (reference) 4D004 AA32 AA33 BA02 CA04 CA08 CA13 CA15 CA45 CB13 CB44 CB45 CB50 CC13 4D067 DD02 DD07 DD11 DD13 DD14 GA03 GA06 GB05 4D071 AA06 AB03 AB04 AB14 AB24 AB25 CA03 CA05 DA15 DA20

Claims (2)

[Claims] 1. A classifier for separating the sludge into a sludge cake, a classifier for separating sludge and separating the sludge into sludge cakes. A crusher for crushing material, a mixer for mixing crushed stone, dust, sludge cake, cement and water obtained by crushing concrete waste into a liquid mixture, and a solidifying means for solidifying the liquid mixture into blocks A facility for making waste soil and concrete waste useful, comprising: 2. Separation of earth and sand into aggregate and sludge, dewatering of the sludge into sludge cake, crushing of concrete waste material into waste material crushed stone and dust, the waste material crushed stone, the dust, the sludge cake, cement Mixing water and water into a liquid mixture, solidifying the liquid mixture into blocks, crushing the blocks into block crushed stones, and classifying the block crushed stones according to the size of the grains. How to use concrete waste.