JP3411549B2 - Equipment and method for making soil and concrete waste useful - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a utilization equipment and a utilization method for soil and concrete waste materials.

[0002]

2. Description of the Related Art A large amount of earth and sand is excavated in road construction, tunnel construction, underground shield construction, construction sites, etc., but many local governments generate sediments within the area of other local governments. Is prohibited. Therefore, the current situation is that it is difficult to secure a dumping place or a storage place for a large amount of sediment. On the other hand, a large amount of concrete waste materials generated when a concrete structure is dismantled does not have a useful application, and it is difficult to dispose of the waste materials, so that the concrete waste materials are illegally dumped and become a social environmental problem.

[0003]

However, as described above, both the earth and sand and the concrete waste materials are troublesome and have no utility value.

In view of the above circumstances, it is an object of the present invention to provide a useful equipment and method for reusing waste sand and concrete waste material to produce a useful building material.

[0005]

According to a first aspect of the present invention, there is provided a facility for making use of earth and sand and concrete waste material. In the equipment, the earth and sand are classified according to their grain size , and a classifier for separating sludge contained in the earth and sand, and the sludge. and a dehydrator to sludge cake was dehydrated, co
By crushing Nkurito waste, and crusher to waste crushed stone and dust, the waste crushed stone, the dust, the sludge cake,
It is characterized by comprising a mixer that mixes cement and water into a liquid mixture, and a solidifying means that solidifies the liquid mixture into blocks. The method for making the soil and concrete waste material useful according to claim 2 separates the sand and sand into aggregate and sludge, dewaters the sludge into a sludge cake, and crushes the concrete waste material into waste material crushed stone and dust, and the waste material crushed stone. , The dust, the sludge cake, cement and water are mixed to form a liquid mixed material, the liquid mixed material is solidified into blocks, the blocks are crushed into block crushed stones, and the block crushed stones are sized according to particle size. Characterized by classification.

The invention according to claim 1 operates as follows.
First, when earth and sand are put into the hopper of the classifier, the classifier can classify the earth and sand according to the particle size thereof to obtain an aggregate and separate sludge. This sludge is dehydrated 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 dust is generated at this time. Crushed stone, dust,
The sludge cake, cement and water are mixed by a mixer into a liquid admixture. This liquid mixture is solidified into a block by the fixing means. This block is crushed by a crusher into block crushed stones. Further, a useful building material can be manufactured by classifying the crushed block stones with a classifier according to the grain size. Therefore, it is possible to manufacture useful building materials by using the discarded sludge cake and concrete waste material as raw materials, and it is not necessary to throw away the sludge cake and concrete waste material, and there is no need to dispose of or dispose of them. According to the invention of claim 2, useful construction materials can be manufactured by using the discarded sludge cake and concrete waste material as raw materials, and it is not necessary to throw away the sludge cake and concrete waste material, and there is no need to dispose of or dispose of them. .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a facility for utilizing earth and sand and concrete waste material according to the present embodiment. As shown in the figure, the useful equipment for soil and concrete waste material of the present embodiment comprises 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. 3-5
3 is a classifying rotor, the outer shape of which is generally cylindrical, the base end having a large diameter, the tip end having a small diameter, and the middle part having a truncated cone shape connecting both ends. Although not shown, the internal structure of this classification rotor 3 is one in which an inner cylinder net, an intermediate cylinder net, and an outer cylinder net are concentrically mounted, and the inner cylinder net has the largest coarseness, for example, 40 mm. is there. The intermediate cylinder net is a medium mesh, for example, 20 mm. The outer cylinder net is fine, for example, 5 mm.

Further, each cylinder net is provided with an internal screw so that an input material such as earth and sand is sent from the base to the tip. Furthermore, on the outer circumference of the base 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 direction of the spiral of the external screw 5 is such that when the classification rotor 3 rotates about its axis, the external charge such as earth and sand is fed from the base end to the tip.

Rolling rings 6 and 7 are attached to the base end and the intermediate portion of the classification rotor 3. On the other hand, a pair of left and right rolling rollers 8 are provided on the upper surface of the base end of the portable frame 1,
1, a pair of left and right rolling rollers 9 is also rotatably mounted on the receiving table 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 end is slightly higher than the base end. It is supported. A chain wheel 13 is attached to the base end of the classification rotor 3. This chain wheel 13
When the chain is wound around a chain sprocket that is rotated by a motor (not shown) and the motor is driven, the classification rotor 3 is rotated.

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

A muddy water casing 23 is arranged below the outer periphery of the classification rotor 3 from the base end to the center of the classification rotor 3. The muddy water casing 23 has a semicircular arc shape in cross section, and is configured to store mud containing water therein. The first discharge chute 24, the second discharge chute 25, and the third discharge chute 2 are located below the outer periphery of the classification rotor 3 from the central portion to the tip of the classification rotor 3.
6 are installed in that order, and further the classification rotor 3
A fourth discharge chute 27 is installed at the exit of the. 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,
Nos. 25, 26, and 27 are provided respectively on the outlet side of the muddy water casing 23 and the external screw 5, the outlet side of the outer cylinder net, the outlet side of the intermediate cylinder net, and the outlet side of the inner cylinder net. 31
Numerals 33 to 33 are discharge conveyors, which are provided below the first to third discharge chutes. These discharge conveyors 31-33 are
The base end portion is placed on the portable frame 1, and the tip end portion is installed so as to extend laterally 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 the line IX of FIG. 6 to 9, 53 is a raw water tank, which is provided on 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 skew plate 55 is attached to an upper portion inside the raw water tank 53, and a scraping screw 56 is arranged to a lower portion. The scraping screw 56 is driven by a motor 57. A lower part of the tip of the raw water tank 53 is a mud collecting chamber 58.

The slanting plate 55 is provided to accelerate the binding of floating particles, slide down on the slanting plate 55, and rapidly settle mud in the tank. Then, the settled sludge is collected in the mud collecting chamber 58 by rotating the scraping screw 56. In front of the trailer 50, there is a medicinal tank 7
1. A medicated pump 72 and a sulfuric acid band tank 73 are installed, 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 installed 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. Further, a filtered water tank 64 is provided at the discharge destination of the filtered water chute 62.
Is installed. Further, a sludge drawing pump 65 is installed in front of the trailer 50.

The filter press 61 has several tens of rectangular frame-shaped filter plates arranged in a freely openable and closable manner in series, and two filter cloths are sandwiched between the filter plates. It is a known device configured to be opened and closed by a cylinder. At one end of the filter plate group, the sludge drawing pump 65 draws and supplies sludge from the mud collecting chamber 58 in the raw water tank 53. After that, when each filter plate is pressurized with a hydraulic cylinder, filtered water is squeezed out from the sludge, and when each filter is opened, the sludge cake without water is taken out.

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

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

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

Next, the operation and effect of the facility for making use of the earth and sand and the concrete waste material of this embodiment will be described. As shown in FIG. 3, the waste water casing 23 of the classifier A and the raw water injection pipe 54 of the dehydrator B are connected by a hose 81, and the filtered water tank 64 of the dehydrator B and the hopper 21 of the classifier A are preliminarily connected. Alternatively, a hose 8 is provided between the water inlet of the classification rotor 3 and
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 the method for making the waste and concrete waste useful according to the present invention. In the figure, the earth and sand t0 are excavated from road construction, tunnel construction, underground shield construction, 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, the earth and sand t0 is put into the hopper 21, and is put into the inside of the inner cylinder net of the classification rotor 3 by the charging chute 22. Then, while rotating the classification rotor 3, water is injected into the inside.

When the classification rotor 3 rotates, the earth and sand t0 in the classification rotor 3 are sent from the base end to the tip while being scrubbed with water by the internal screw. At this time, earth and sand with a diameter of 40 mm or less fell into the intermediate cylinder net, and stones with a diameter of 40 mm or more were 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 drops to the outer cylinder net, and for example, the sand having a diameter of 20 to 40 mm is carried to the tip of the intermediate cylinder net and drops from the third chute 26. Furthermore, sand with a diameter of 3 to 20 mm is the second chute 25.
Is discharged from the aircraft. The earth and sand having a diameter of 5 mm or less are stirred by the external screw 5 in the muddy water casing 23 and sent to the tip of the mud and the fine sand having a diameter of 5 mm or less are discharged from the first chute 24.

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

On the other hand, the muddy water casing 23 of the classifier A contains muddy water and mud, which are stirred by the external screw 5 to supply the sludge t1 to the dehydrator B.

The sludge t1 is dehydrated by the dehydrator B (12S) to form a sludge cake t2. The fresh water 2 obtained when the sludge t1 is dehydrated 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 2-40 mm
Becomes At this time, in addition to the scrap crushed stone k1, the scrap crushed stone k1
Finer dust k2 is also generated (21S).

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

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

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

This block crushed stone m2 is put into the hopper of the classifier A, and the block crushed stone m2 is classified according to the size of its grain (34S). For example, building material m3A less than 5 mm, 5-20
As with the building material m3B of mm and the building material m3C of 20 to 40 mm, classification can be performed according to the particle size.

As described above, according to the soil and concrete waste material utilization facility of the present invention, the discarded earth and sand t0 and the concrete waste material k0 are reused to produce the useful building materials m3a, m3b, and building material m3c. As a result, it is not necessary to discard the earth and sand t0 and the concrete waste material k0, and there is an effect that a disposal site and a storage site are not required.

[0034]

According to the invention of claim 1, a useful building material can be manufactured by using the discarded sludge cake and concrete waste material as a raw material, and it is not necessary to throw away the sludge cake and concrete waste material. No need for storage space. According to the invention of claim 2, useful construction materials can be manufactured by using the discarded sludge cake and concrete waste material as raw materials, and it is not necessary to throw away the sludge cake and concrete waste material, and there is no need to dispose of or dispose of them. .

[Brief description of drawings]

FIG. 1 is a block diagram of useful equipment for soil and concrete waste material according to the present embodiment.

FIG. 2 is a flow chart of a method for making waste 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.

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

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

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

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

9 is a view taken along the line IX of FIG.

[Explanation of symbols]

1 aggregate 2 Shimizu t0 earth and sand t1 sludge t2 sludge cake k0 concrete waste k1 crushed stone k2 dust r cement w water m0 liquid mixture m1 block m2 crushed stone m3 building materials

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI // B02C 21/00 C04B 18/16 B03B 5/00 B09B 5/00 ZABF C04B 18/16 3/00 Z

Claims (2)

(57) [Claims] 1. Sediment is classified according to its particle size to obtain the sediment.
A classifier for separating sludge contained, a dehydrator to sludge cake to dehydrate the sludge, by crushing concrete waste, and crusher Ru to <br/> the waste crushed stone and dust, the waste crushed stone, the dust, the sludge cake, and mixers which a liquid admixture by mixing cement and water, useful reduction of sediment and concrete waste, characterized in that it consists of a solidifying means to block by solidifying the liquid admixture Facility. 2. Sediment is separated into aggregate and sludge, the sludge is dehydrated into a sludge cake, and concrete waste is crushed into waste crushed stone and dust, and waste crushed stone, dust, the sludge cake, and cement. And earth and water are mixed to form a liquid mixture, the liquid mixture is solidified into blocks, the blocks are crushed into block crushed stones, and the block crushed stones are classified according to grain size. Method for making concrete waste useful.