JP2883883B2 - Activated dewatering cake granulator for cement wastewater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an activated cake which is capable of retaining cement solidifying force by immediately dewatering sludge water after separating aggregate from remaining ready-mixed concrete and capable of withstanding reuse. Corresponding to the fact that it has become possible to collect the cake (Japanese Patent Application No. 5-355228, Japanese Patent Application No. 5-355200), the present invention relates to a processing apparatus for granulating the cake to facilitate reuse.

[0002]

2. Description of the Related Art Conventionally, sludge water was dehydrated on the next day, so that the hydration reaction of cement proceeded and did not harden, so there was no need for granulation.

[0003]

The instant dewatering treatment of sludge water has been developed, and the cake collected therewith hardens with the lapse of time, and if left as it is, it becomes a large lump, making subsequent processing difficult. Therefore, as a method of preventing adhesion to each other by spraying homogenous powder (Japanese Patent Laid-Open No.
-101671). And then,
This apparatus has been developed because granulation of the collected cake is necessary for improving efficiency during reuse.

[0004]

According to the present invention, there is provided a powder-coated active dewatered cake obtained by coating an active dewatered cake obtained by immediately dewatering sludge from which the aggregate of remaining ready-mixed concrete is separated with the same powder as the cake. A receiving plate 3 which is to be received by the processing device 1 and which opens and closes in the longitudinal direction.
The provided its upper portion and a temporary storage chamber 2, receiving only provided ribbon screw conveyor chamber 5 comprising a large pitch in the lower plate, the said ribbon screw conveyor flow end portion, pivotally connected to the cutter 11 in a vertical plane I do. As the next step, there is provided a dusting mechanism 10 for spraying the powder on the cake passed through the cutter. Side by side with the processing device 1, the composite trommel 9
And a mechanism for transferring the crushed cake sent from the processing apparatus to the composite trommel 9 via the bucket conveyor 8.

[0005]

According to the present invention, it is possible to obtain an active cake capable of withstanding reuse by instantly dewatering cement-based sludge water without leaving it. In this process, a granular cake can be automatically produced in the course of hydration.

The activated cake in which the sludge water is dewatered and the same cake is wrapped in the cake taken out is received in the temporary storage chamber 2. This temporary storage chamber receives the falling cake,
A receiving plate 3 that opens and closes in parallel with the axis is provided so that an appropriate amount can be sent downward. The cake on the tray is
If left here for several hours, the hydration proceeds and the hydration hardly adheres to the bottom plate or the like. Here, the ribbon screw conveyor 4 is started. Next, by adjusting the left and right receiving plates alternately and opening it downward,
The cake is allowed to fall into the ribbon screw conveyor chamber 5 by a fixed amount. The cake dropped from the gap 6 of the receiving plate 3 gradually advances while rolling in the ribbon screw conveyor chamber 5.

[0007] Since the ribbon screw conveyor 4 has a pitch greater than the diameter of the screw and the ribbon-shaped step is lowered, the cake is scooped up along the ribbon screw conveyor chamber 5 and a part of the cake is moved in the forward direction. Since the feeding action works, the cake becomes spherical by repeating crushing and rolling in the casing. In addition, a large lump is cut by the cutter 11. The cake that has passed through the cutter receives powder spray from a powdering mechanism 10 provided below the powder reservoir 7, and passes through a bucket conveyor.
It is transferred to the composite trommel 9 provided side by side. The composite trommel 9 promotes mixing and spheroidization with powder in the steel plate cylindrical portion 12 located on the input side, and promotes removal of fine particles and promotion of spheroidization in the next porous plate cylindrical portion 13, and furthermore, the final wire mesh cylindrical portion 14. Is used to classify the particles.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG.
FIG. 2 is a plan view, FIG. 3 is a right side view, and FIG. 4 is a left side view. A temporary storage chamber 2 for first receiving the powder-coated active dewatered cake is provided, and a receiving plate 3 which opens and closes in a longitudinal direction in a double-opened manner is provided inside the temporary storage chamber 2 to control the simultaneous dropping of the cake. The receiving plate may be opened and closed in a sliding manner.
A ribbon screw conveyor 4 having a large pitch is provided below the receiving plate 3, a cutter 11 provided with a plurality of blades is provided on a side plate of the terminal portion of the ribbon screw conveyor, and a dusting mechanism for spraying cake powder from above. 10 is provided. A composite trommel 9 is provided alongside the processing apparatus 1, and the cake that has passed through the cutter is transported to the composite trommel 9 by the bucket conveyor 3.

At the stage of receiving the powder-coated active dewatered cake into the temporary storage chamber, a receiving plate for preventing the cake from dropping at once and filling the ribbon screw casing is provided. That the cake is left to be stirred slowly and repeatedly by a ribbon screw conveyor, and cut into small pieces with a cutter to prevent sticking of the cut cake. Spraying the cake powder with a powdering machine, and then again mixing and granulating and classifying the powder with a composite trommel, automatically sorts by particle size, making it possible to make a granular cake suitable for reuse. You can do it.

[0012]

[Effect] As is clear from the above description, after the active cake having the solidifying force obtained by the instant dehydration is received in the temporary storage tank, the cake is hardened by hydration after a standing time of several hours. By adjusting the opening of the receiving plate and then feeding the cake little by little with a ribbon screw conveyor while crushing the cake into small pieces and rolling it, the crushed cakes are spheroidized and the cake powder is mixed so as not to stick to each other. This is an apparatus for granulating an active dewatered cake of cement wastewater, which has an effect of obtaining a granulated cake which can be easily reused by coating and further granulation and classification by a composite trommel.

[Brief description of the drawings]

FIG. 1 is a front internal structure diagram of an embodiment of the present invention.

FIG. 2 is a plan view

FIG. 3 is a right side view

FIG. 4 is a left side view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Processing apparatus 2 Temporary storage chamber 3 Receiving plate 4 Ribbon screw conveyor 5 Ribbon screw conveyor room 6 Separation of receiving plates 7 Powder reservoir 8 Bucket conveyor 9 Composite trommel 10 Powdering mechanism 11 Cutter 12 Steel plate cylinder 13 Steel plate cylinder 14 Wire mesh Cylindrical part 15 Powder coating active dewatering cake inlet

Claims (2)

(57) [Claims] 1. A powder-coated active dewatered cake obtained by coating an active dewatered cake obtained by immediately dewatering sludge water after separating aggregate of remaining ready-mixed concrete with powder of the same quality as the cake, according to the present invention. What is received in the apparatus, the processing apparatus, a temporary storage chamber provided with a receiving plate that can be opened and closed,
A ribbon screw conveyor chamber is provided below it ,
A cutter unit provided with a plurality of blades is provided on the feed direction terminal plate of the ribbon screw conveyor chamber , and a temporary storage chamber is provided.
From the cutter section through the screw conveyor room
The crushed cake made by providing a dusting mechanism for spraying the dry cake powder coated form was, on one o'clock storage chamber of the processing device
An activated dewatering cake granulator for cement wastewater, comprising a composite trommel arranged in parallel with the edge and parallel to the ribbon screw axis, and interlocked with the treatment device. 2. The composite trommel has a front part connected to a steel plate cylindrical part, a central part connected to a perforated plate cylindrical part, and a rear part connected to a wire mesh cylindrical part, from the inlet direction of the powder-coated active dewatered cake that has passed through the processing apparatus. claims Te becomes forming a trommel, characterized in that it provided a series of ribbon screw on the inner surface
2. The activated dewatering cake granulator for cement wastewater according to claim 1 .