JP4467211B2 - Apparatus and method for charging CSG material into mixer - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus and a method for charging CSG material into a mixer for mixing a locally generated material and cement.
[0002]
[Prior art]
At dam construction sites, CSG materials, in which small amounts of cement are mixed with locally generated materials such as river gravel and crushed stone waste materials, are used in many dams (such as sabo dams and river levees) as embankment materials. .
In order to continuously supply locally generated materials and cement to a mixer such as a mixer, a belt conveyor is generally used. Conventionally, CSG material is put into a mixer by placing cement on locally generated materials. is doing.
However, in the above-described method, the cement is exposed on the surface when the mixer is charged or inside the mixer, so that there arises a problem that the cement adheres to the charging port or the mixing blade.
Further, as a countermeasure, a method for conveying a cement layer sandwiched between locally generated materials as disclosed in Japanese Patent Application Laid-Open No. 2001-40639 has been proposed.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned method, cement is contained in the locally generated material, but the cement is present as a group of cement. However, if the sandwich state with the locally generated material breaks down when it is put into the mixer, the cement layer will be exposed, and the cement will be in direct contact with the inlet to the mixer and the kneading blades of the mixer. , Adhesion occurs.
In addition, since the locally generated material and cement are sandwiched, they exist as separate layers, and if left as they are, the separation of cement and locally generated material can be completely prevented. It is not possible to perform mixing reliably.
In order to solve the above-mentioned problem, cement must be included in the locally generated material in an unassembled state as a layer.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus and a method for dispersing a cement layer before introducing CSG material into a mixer so that the cement layer can be included in a locally generated material.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a CSG material charging device for mixing a locally generated material and cement, a conveying means for conveying the locally generated material, and a locally generated material conveyed by the conveying means. Cement supply means for supplying cement onto the material, and a mixer while vibrating the locally generated material on which the cement supplied by the cement supplying means is placed and dispersing and mixing the cement in the locally generated material A CSG material charging device to a mixer, characterized in that the CSG material is charged into a mixer for mixing a locally generated material and cement. The locally generated material with the supplied cement on top is vibrated by the vibration transfer means, and the cement is dispersed and mixed in the locally generated material and transferred to the mixer. A method of input CSG material into the mixer to enter.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall view showing an embodiment of the present invention. FIG. 2 is a partially enlarged view of FIG.
In FIG. 1, the locally generated material 9 is conveyed from a receiving hopper 8 by a conveying means 1 such as a belt conveyor. The on-site generated material 9 conveyed to the height of the mixer inlet 5 by the conveying means 1 is placed on a vibration feeder as the vibration transfer means 3 and transferred to the mixer inlet 5 by vibration. At this time, the cement 10 is placed on the locally generated material 9 which is transferred while being vibrated by the cement supply means 2 provided on the vibration transfer means 3.
The CSG material made up of the locally generated material 9 and the cement 10 put into the mixer 4 is mixed and discharged for a certain period of time, and is transported to the placement site through the discharge hopper 7.
[0006]
An embodiment of the present invention will be described with reference to FIG.
The on-site generated material 9 is vibrated by the vibration transfer means 3 such as a vibration feeder with the cement 10 placed thereon. Due to the vibration effect of the vibration transfer means 3, the cement 10 layer penetrates into the gaps of the locally generated material 9 while being dispersed in the particles of the cement 10 having a small diameter, and is mixed into the locally generated material 9. Since the particles of cement 10 mixed in the locally generated material 9 do not exist as aggregates, even if the cement 10 is put into the mixer 4, the cement 10 layer does not come into contact with the mixer 4 and hardly adheres to the inlet or the mixing blade. Become.
In general, CSG material is continuously mixed by continuous quantitative supply. The conveying means 1 for the locally generated material 9 in this embodiment also conveys a continuous quantity. Since the cement 10 is also supplied in small amounts continuously, it is easy to disperse the cement 10 layer by the vibration action and to mix it with the locally generated material 9.
[0007]
Further, the length L of the transfer portion of the vibration feeder which is the vibration transfer means 3 is normally determined in consideration of only the transfer, but in this embodiment, the cement is dispersed and mixed in addition to the transfer by vibration. The length L of the transfer part of the vibration transfer means 3 is preferably longer than the length of the transfer part considering only the transfer. Therefore, it is necessary to determine the length L of the transfer portion in proportion to the amount of cement 10 to be input.
[0008]
The phenomenon of adhesion of the cement 10 particles will be described with reference to FIG. 3. FIG. 3 (a) shows a state where the moisture 11 is small and the cement 10 particles are not coated with the moisture 11. This shows a state in which the moisture 11 is large, the particles of the cement 10 are wet, and the moisture 11 is coated.
In FIG. 3 (a), the surface tension of the moisture 11 causes a small amount of moisture 11 to bind tightly, and the adsorbing force acts greatly on the mixer 4 and adheres firmly. In FIG. 3B, since the moisture 11 is large and the cement 11 particles are coated with the moisture 11, the adsorption force due to the surface tension becomes small and the binding force is weak. Since it adheres with weak force even if it adheres to the mixer 4, the attached state cannot be maintained, and the attached matter is easily peeled off.
[0009]
According to the present embodiment, the cement 10 particles mixed in the locally generated material 9 absorbs the moisture 11 contained in the locally generated material 9 and becomes a wet state in which the surface is coated with the moisture 11. Due to the action, the adhesive force becomes weak, and it becomes more difficult to adhere.
Also, in the mixing operation, the cement 10 particles are finely dispersed rather than aggregated by vibration before being introduced into the mixer 4 and are mixed into the locally generated material 9 separately. The premixing action in the previous stage is performed.
[0010]
In general, the cement 10 particles after being mixed by the mixer 4 are wetted by the surface of the cement 10 particles being coated with moisture 11 as described above. That is, since the state of the particles of the cement 10 according to the present embodiment is the same as that of the mixed cement 10 before being put into the mixer, a larger premixing action is obtained.
[0011]
【The invention's effect】
As described above, according to the present invention, when the CSG material is charged into the mixer 4, the layer of the cement 10 is dispersed by the vibration transfer means 3, and the particles of the cement 10 are mixed in the locally generated material 9. However, since it does not directly contact the inlet of the mixer 4 or the mixing blade as a layer of the cement 10, adhesion hardly occurs.
In addition, since the cement 10 is dispersed in the locally generated material 9 due to vibrations, not a set, but a premixing action is performed before charging into the mixer 4.
Furthermore, since the cement 10 particles are coated with moisture 11 in the locally generated material 9 and become wet, adhesion is prevented and the premixing action is improved.
[Brief description of the drawings]
FIG. 1 is an overall view showing an embodiment of the present invention.
FIG. 2 is a partially enlarged view of FIG.
FIG. 3 is a state diagram for explaining the adhesion state of cement particles.
[Explanation of symbols]
1. Conveying means 2. 2. Cement supply means 3. Vibration transfer means 8. Mixer Locally generated materials10. cement

Claims (2)

In a CSG material charging apparatus for mixing a locally generated material and cement, a conveying means for conveying the locally generated material, and a cement supplying means for supplying cement onto the locally generated material conveyed by the conveying means Oscillating transfer means for vibrating the locally generated material on which the cement supplied by the cement supplying means is placed and transferring the cement to the mixer while dispersing and mixing the cement in the locally generated material. A device for charging CSG material into the mixer. In the method of charging CSG material into the mixer that mixes the locally generated material and cement, the locally generated material with the cement supplied by the cement supply means is vibrated by the vibration transfer means, A method for charging CSG material into a mixer in which cement is dispersed and mixed and then transferred to the mixer and charged.

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