JP4303815B2 - Crushing and mixing mixer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crushing and mixing mixer capable of crushing a lump such as a dewatered cake obtained by dewatering mud using a dehydrator.
[0002]
[Prior art]
Conventionally, the ready-mixed concrete factory may return to the factory without using the ready-mixed concrete shipped on the mixer truck. This returned ready-mixed concrete contains aggregate, cement and fine particles by the processing equipment. The sludge is separated into sludge water, and the sludge content in the sludge water is dehydrated by a filter press or the like and taken out as a lump dehydrated cake. The dehydrated cake is transported to a disposal site and discarded, and the aggregate is reused.
[0003]
[Problems to be solved by the invention]
However, recently there is also a request that the dehydrated cake can be effectively used without being disposed of. For that purpose, if the solidified dehydrated cake can be finely crushed and granulated, it can be mixed with solidified material etc. to road base material etc. It is thought that the use of will also expand.
[0004]
In view of the above points, an object of the present invention is to provide a mixer for crushing and mixing that can crush a lump such as a dehydrated cake and make it reusable.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention has two parallel mixing shafts rotating in the opposite directions in the mixing tank, and at a predetermined angle so as to extrude the material to each mixing shaft in the axial direction. A slanted extrusion blade and a crushing piece fixed to a strip that is parallel to the axis of the mixing shaft and arranged in a comb shape in the direction of rotation of the blade and protruding toward the mixing shaft. a blade, radially and along with along the mixing shaft multiple arranged at predetermined intervals, the gap between the rubbing crushing blade and the mixing vessel inner wall becomes gradually narrower with increasing rearward wide tip of the rotational traveling direction Thus, a lump is sandwiched between the crushing blades and the inner wall of the mixing tank and pressed against the inner wall of the mixing tank to be crushed .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
According to the crushing and mixing mixer of the present invention, the mixing shaft is rotated to rotate the extrusion blade and the crushing blade in the mixing tank. At this time, these blades are rotated in the direction of rising along the side wall of the mixing tank.
[0007]
When a massive dehydrated cake or the like is introduced into the mixing tank, the pressing surface of the extrusion blade comes into contact with the massive material at a predetermined angle, and the material is moved along the mixing axis while being pushed out by a shearing action. Further, while the crushing blade rotates from the bottom of the mixing tank to the side wall, the material is pressed against the mixing tank wall and lifted while being crushed. In this way, the material is repeatedly crushed by being repeatedly subjected to the shearing action and the crushing action by the extrusion blade and the crushing blade.
[0008]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
In the figure, reference numeral 1 denotes a mixing mixer for crushing a lump, which passes through two parallel mixing shafts 3 and 3 ′ in the mixing tank 2, and is freely rotatable by a bearing 4 fixed to the mixing tank 2. I support it.
[0010]
Gears 5 and 5 'are attached and fixed to one end of the mixing shafts 3 and 3', and the mixing shafts 3 and 3 'are rotated at a synchronous speed by engaging the gears 5 and 5'. Yes. Further, sprockets 6 and 6 'are mounted and fixed to the other end portions of the mixing shafts 3 and 3' as a rotation transmission mechanism, and the sprockets 8 and 6 'and the sprockets 8 attached to the driving motors 7 and 7', 8 'is connected by chains 9 and 9', and the mixing shafts 3 and 3 'are rotated in the direction indicated by the arrows in FIG. 5 by the drive motors 7 and 7'.
[0011]
As shown in FIG. 5, a plurality of annular flanges 10 are fixed to the mixing shafts 3 and 3 ′ in a direction orthogonal to the shaft center at a predetermined interval in the shaft core direction. Extrusion blades 11 bent at an angle are attached by bolts and nuts 12 in the radial direction.
[0012]
The extrusion blade 11 moves the material along the mixing shafts 3 and 3 ′ while pushing out the material by a shearing action, and the size and inclination angle of the blade may be appropriately selected according to the properties such as the size and viscosity of the lump to be handled. .
[0013]
The flange 10 is provided with crushing blades 13 for crushing the lump. The crushing blade 13 is formed by fixing a plurality of round bars 15 having a predetermined length in a comb shape in the direction of rotation of the blade on a strip 14 that is substantially parallel to the axis of the mixing shaft 3, 3 ′. As shown in FIG. 5, the gap between the mixing tank 2 and the crushing blade 13 is attached to the flange 10 with the bolt and nut 12 so that the tip in the traveling direction is the widest and gradually becomes narrower toward the rear. The lump that is to be crushed is easily bitten into the gap between the crushing blade 13 and the inner wall 16 of the mixing tank 2 and is strongly pressed against the inner wall 16. Since the gap between the crushing blade 13 and the inner wall 16 of the mixing tank 2 has a great influence on crushing of the lump, it is adjusted to a suitable gap for crushing according to the properties of the lump such as dehydrated cake. .
[0014]
In addition, the crushing blade 13 may be a suitably sized flat plate depending on the lump to be crushed, and may be a suitably sized flat plate. A lump may be formed between the blade and the inner wall 16 of the mixing tank 2. Various shapes can be appropriately selected and used as long as they can be pressed against the inner wall 16 and simultaneously crushed.
[0015]
When attaching the extruding blade 11 and the crushing blade 13 to the flange 10 at a predetermined interval in the axial direction, the crushing blade 13 is crushed so that the material extruded by the extruding blade 11 is crushed by the crushing blade 13. Arrangement is preferable because the crushing effect is improved.
[0016]
Thus, when a lump-like material such as dehydrated cake is introduced into the mixing tank 2 while rotating the mixing shafts 3 and 3 ′ of the mixer 1, the extrusion blade 11 captures the material near the center of the mixing tank 2 and performs a shearing action. Then, the material is taken in so as to be pushed down the mixing tank 2 while pushing the material. The material pushed below the mixing tank 2 is captured by the rotating crushing blades 13, and is crushed while being pressed against the inner wall 16 of the mixing tank 2 as the crushing blades 13 rotate. The shearing action and feeding action by the extruding blade 11 and the crushing action by the crushing blade 13 are repeated, and the massive material is gradually crushed finely. Since the mixer 1 is used for batch processing, the blade inclinations of the extrusion blades 11 of the mixing shafts 3 and 3 'are reversed. If it moves like this and pulverizes for a predetermined time, it will discharge | emit by opening the discharge port (not shown) of the bottom part of the kneading tank 2. FIG.
[0017]
In this way, a lump such as a dehydrated cake can be crushed and granulated in the mixer 1 so that it can be reused. By this, various solidifying materials can be added during the material crushing of the mixer. For example, the granulated material and the solidified material can be well mixed to finish the desired product.
[0018]
In this embodiment, a batch processing mixer has been described as an example. However, the present invention is not limited to a batch processing mixer. A material input port is provided at one end of the mixing tank 2 and a discharge port is provided at the other end. In this case, the extrusion blades 11 of the mixing shafts 3 and 3 ′ have blade angles so as to be sent from the material input port at one end to the discharge port at the other end. And
[0019]
In addition, a material in which round bars 15 are arranged in a comb shape as the crushing blade 13 has little adhesion of the material to the crushing blade 13, and a material formed entirely as a flat plate is slightly adhered to the surface, but is a lump. Experiments have shown that the details of things become finer. Therefore, the shape of the crushing blade may be appropriately selected according to the properties of the mass to be crushed and the use after pulverization.
[0020]
【The invention's effect】
As described above, in the crushing and mixing mixer according to the present invention, the two parallel mixing shafts rotating in the opposite directions are disposed in the mixing tank, and the material is placed in the axial direction on each mixing shaft. Extruding blades inclined at a predetermined angle so as to extrude, and a plurality of round bars of a predetermined length arranged in a comb shape in the direction of rotation of the blades on a strip that is substantially parallel to the axis of the mixing shaft, protrude toward the mixing shaft A plurality of crushing blades fixed in a radial manner and at a predetermined interval along the mixing axis, and a gap between the crushing blades and the inner wall of the mixing tank is wide at the front end portion in the direction of rotation, and rearward. As it becomes narrower gradually , the lump is sandwiched between the crushing blades and the inner wall of the mixing tank and pressed against the inner wall of the mixing tank to crush it. Can be crushed and granulated and reused It can be.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a crushing and mixing mixer according to the present invention.
2 is a plan view of FIG. 1. FIG.
FIG. 3 is an enlarged view of a main part in which a part of FIG. 1 is cut away.
4 is a plan view of FIG. 3;
5 is a cross-sectional view taken along line AA in FIG.
[Explanation of sign]
DESCRIPTION OF SYMBOLS 1 ... Mixer 2 ... Mixing tank 3, 3 '... Mixing shaft 10 ... Flange 11 ... Extruding blade | wing 13 ... Crushing blade | wing 16 ... Inner wall

Claims (1)

Two parallel mixing shafts rotating in opposite directions are arranged in the mixing tank, and the extrusion blades inclined at a predetermined angle so as to extrude the material in the axial direction on each mixing shaft, and the axis of the mixing shaft A plurality of round bars of a predetermined length arranged in a comb shape in the direction of rotation of the blades and protruding to the mixing shaft side and fixed to the strip plate, which is substantially parallel to the strip plate, radially and along the mixing axis The gap between the crushing blade and the inner wall of the mixing vessel is arranged to be gradually narrower as the tip in the direction of rotation is wider and rearward, and the crushing blade and the inner wall of the mixing vessel A mixer for crushing and mixing, characterized in that a lump is sandwiched between and pressed against the inner wall of the mixing tank and crushed.

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