JP3301019B2 - Classifier for unconsolidated concrete - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to is the still not solidified raw concrete sludge water of the cement-water related to the classification device of the non-solidified concrete to be used in order to separate from the bone material such as sand, gravel.

[0002]

2. Description of the Related Art Concrete manufactured in a ready-mixed concrete factory is usually transported to a casting site by a concrete mixer truck (hereinafter, simply referred to as a mixer truck) and used with equipment such as a concrete pump. It is driven. In this casting operation, it is inevitable that some of the ready-mixed concrete remains in the mixer truck, and the remaining ready-mixed concrete is usually called remaining concrete. The mixer truck that has completed the work immediately returns to the ready-mixed concrete factory, and if the remaining concrete is not completely discharged, it will solidify in the mixer truck, which will hinder the next casting operation. For this reason, at present, water is injected into the mixer truck, and the remaining concrete is discharged from the mixer truck while washing, and is dumped in yards, pits and the like.

[0003] On the other hand, in order to prevent the disposal of the remaining con- tainers from affecting the environmental preserva- tion, recently, an operation of classifying the remaining con- tainers has been performed. This is the classification treatment to use trommel classifier is common, this trammel type ones has been made to mechanically separate the magnitude of the solids, clogging the wire mesh that is used frequently This is inevitable, and there is a problem in workability and durability. The present invention has been made to solve such a problem, and its purpose is to remove unconsolidated concrete such as residual concrete.
Utilizing the buoyancy of particulate cement during stirring,
Efficient cement from large particles of sand and gravel aggregate
And separate the sludge from cement and water.
An object of the present invention is to provide an apparatus for classifying unconsolidated concrete in which water and aggregates of sand and gravel are separately collected and can contribute to resource recycling.

[Means for Solving the Problems]

In order to achieve the above object, a classifying apparatus for unsolidified concrete characterized by the present invention comprises a hopper divided vertically by a partition portion, and a lower end side opening-connected to a lower chamber of the hopper to be inclined. provided state, and includes a holding barrel lower end portion forms a lower half portion of the lower chamber, and a stirring conveying member which is rotatably provided along the length direction of the holding cylinder , water injection port in the side wall of the upper chamber of the hopper, also in the partition portion provided chute respectively, discharge outlet at an upper end portion to the holding cylinder is also connected to portions of the lower chamber of the hopper An overflow port is provided near each, the stirring carrier is a drive shaft mounted on the holding cylinder, a stirring function portion formed at a portion of the drive shaft facing the lower chamber of the hopper, Continuous with stirring function It is constituted by conveyor <br/> Function portion formed on the drive shaft Te.

[0005] In the apparatus for classifying unconsolidated concrete according to this configuration, the ready-mixed concrete dropped into the upper chamber of the hopper forms an arc-shaped surface around the upper chamber of the hopper on the side facing the water injection port. As a result, the water is swirled and preliminarily stirred by the water force injected from the water injection port. Then, connect the introduction pipe to the drop port so that the ready-mixed concrete that has been preliminarily stirred falls at a certain point in the stirring area by the stirring function section, and bring the tip end of the introduction pipe close to the stirring function section of the stirring conveyance body. In this way, it is possible to stir by utilizing the full length of the stirrer, and together with the pre-stirring in the upper chamber of the hopper, the separation of cement and aggregate is performed efficiently and the cement in the fine particle state moves toward the water surface side. Float
On the other hand, since the aggregates settle, the sludge water ( cement / water sludge water ) can be completely separated and collected from the aggregate side.

Further, it provided by decentering stirring transportable Okukarada in the holding tube, with a flow of the overflow port to the sludge water
Kill way to lever, can be discharged efficiently the sludge water out of the system. Incidentally, the line also conveying action stirred functional unit
May be configured so that

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a hopper which is vertically divided by a partition portion 2, and a drop port 3 of about 100 to 150 mm is provided at an apparent center portion of the partition portion 2, and a dropper 3 is provided at a side wall of the upper chamber 1 a of the hopper 1. 20 ~
Water injection ports 4 of about 50 mm are provided.
The dropping port 3 is connected to an introduction pipe 5 whose tip is vertically suspended so as to be close to a stirring function section of a stirring and transporting body to be described later, and a water injection port 4 is connected to a water pump (not shown). ) Side, and the inner peripheral surface of the upper chamber 1a on the side facing the water injection port 4 is formed in an arc shape. In addition,
The partition part 2 is gently inclined toward the falling port 3 (3 to 1).
5 °).

The bottom side of the lower chamber 1b of the hopper 1 is open, and the lower end 6a of the holding cylinder 6 is openly connected to this bottom side, and the lower end 6a forms the lower half of the lower chamber 1b. The holding cylinder 6 is provided in an inclined state by connecting a lower end portion 6 a to an installation base 7 and supporting an intermediate portion by a column 8. The holding cylinder 6 has a discharge port 9 at the upper end 6b, and the lower chamber 1 of the hopper 1.
b and overflow port 11 are respectively provided near the connection portions c of the, in the holding cylinder 6 agitated along the length
The carrier 12 is provided rotatably.

The stirring / transporting body 12 includes a drive shaft 13 suspended from the holding cylinder 6, a stirring function unit 14 formed at a portion of the drive shaft 13 facing the lower chamber 1 b of the hopper 1,
The stirring shaft 14 is formed on the drive shaft 13 continuously.
The drive shaft 13 is configured by a transfer function unit 15, and is driven by a prime mover M such as a geared motor attached to the upper end 6 b of the holding cylinder 6. The stirring function unit 14 includes a plurality of stirring blades (e.g., paddle type) 14 a arranged at intervals on the drive shaft 13, and the transfer unit 15 includes a spiral 15 a on the drive shaft 13. Are provided, respectively.

[0010] The length of the stirring function unit 14 is about 20-25% of the length of the agitation conveying member 12, when applying the transfer function to spiral 14b provided in the stirring function unit 14, the transport <br The transfer of the aggregate to the functional unit 15 side can be promoted. On the inner wall of the holding cylinder 6, there is horizontally mounted a still water box 16 for communicating with the overflow port 11 to eliminate the influence of the stirring and conveying action, and the sludge water separated from the aggregate overflows through the still water box 16. Since it flows out from the mouth 11, there is no fear that the aggregate is mixed into the sludge water .

Next, the classification operation will be described. When unconsolidated concrete such as residual concrete is put into the upper chamber 1a of the hopper 1 from a mixer truck or the like, the unconsolidated concrete is agitated by the water injected from the water injection port 4, and the falling port 3
It falls to the lower chamber 1b through more of the inlet pipe 5, where, and further stirred by stirring function unit 14, a particulate cell <br/> instrument floats toward the surface of the water side, a large particle bone The wood separates as it settles. The result of this fractionation was that cement with particles less than 0.2 mm and particles 0.2
It is classified into aggregates of sand and gravel of mm or more. Then, Seme <br/> cement-water sludge water while flowing to the outside of the system from the overflow port 11, precipitated aggregate is transported to the discharge port 9 side conveying function unit 15, it is discharged from the discharge port 9 You.

[0012]

Effect of the Invention of the present invention is to provide as described above, to the stirring
Using the separation action from aggregates and the floating action of fine cement particles on the water surface side to separate when transported by the holding cylinder.
Classifier that can be used to remove unconsolidated residue
Cement and water sludge water from concrete to sand and gravel
Of course, it can be completely separated and collected from the aggregate, and unlike the one using a filter, there is no problem such as clogging. In addition, it has excellent durability,
To the burden on the inspection work surface can be greatly reduced, it effective der also on to re-use the cement, its practical value is great.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention with a part cut away.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a main part (a mounting part of a still water box) of FIG. 1;

[Explanation of symbols]

1 is a hopper, 1a is an upper chamber, 1b is a lower chamber, 2 is a partition part, 3 is a dropping port, 4 is a water injection port, 5 is an introduction pipe, 6 is a holding cylinder, 6a is a lower end, 6b is an upper end, 9 is an outlet, 11
Is an overflow port, 12 is a stirring and conveying body, 13 is a drive shaft, 14 is a stirring function section, 15 is a transfer function section, and c is a connection section.

Claims (2)

(57) [Claims] [1 claim: a hopper partitioned vertically by the partition portion, the lower end side is provided in the inclined state by opening connected to the lower chamber of the hopper, and the lower end portion side to form a lower half portion of the lower chamber A holding cylinder, and a stirring / transporting body rotatably provided in the holding cylinder along the length direction, a water injection port on a side wall of an upper chamber of the hopper, and a water injection port on the partition section. Is provided with a drop port, a discharge port is provided at the upper end of the holding cylinder, and an overflow port is provided near a connection portion with the lower chamber of the hopper,
The stirring and transporting body includes a drive shaft suspended on the holding cylinder, a stirring function unit formed at a portion of the drive shaft facing the lower chamber of the hopper, and the drive unit connected to the stirring function unit. An unsolidified concrete classifier, comprising a transport function unit formed on a shaft. 2. An upper portion of a hopper facing a water injection port.
The inner peripheral surface side is formed in an arc shape, while
Is is connected inlet pipe, the inlet pipe classifier unsolidified concrete according to claim 1, characterized in that it is vertically so that the tip portion is proximate to a stirred functional portion of the agitation conveying member.