JPH08142045A - Stirring mixer for particles of different kind - Google Patents

Abstract

PURPOSE: To provide the title stirring mixer capable of rapidly and uniformly stirring and mixing particles of a different kind such as recycle ground particles and virgin particles, capable of being easily produced in relatively low cost and capable of being also suppressed low in maintenance cost. CONSTITUTION: A main body housing 32, the main shaft 35 provided in the main body housing 32 horizontally to be rotationally driven and the stirring blades 40 integrally rotated along with the main shaft 35 are provided. The stirring blades 40 are constituted of a large number of the elongated plate elements supported on a large number of the supports 41-46 provided to the main shaft 35 at a predetermined interval in a state bent or curved in a dogleg shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a uniform mixture of recycled crushed particles obtained by crushing a resin foam such as used Styrofoam products and newly pre-expanded virgin particles at a constant ratio. It relates to a heterogeneous particle stirring mixer suitable for mixing.

[0002]

2. Description of the Related Art Recently, from the viewpoint of effective use of resources and environmental protection, various measures have been developed to recycle and reuse resin foam such as used Styrofoam products.
As one of them, for example, as seen in JP-A-6-182890 and 6-262627, etc., a minor axis of about 1 to 10 mm obtained by crushing a resin foam such as a used Styrofoam product. By mixing the recycled pulverized particles and the newly pre-expanded virgin particles in a fixed ratio, and molding the mixed particles as a raw material with, for example, a molding machine equipped with both male and female molds, a new resin foam is formed. Methods have been proposed for obtaining body products.

In carrying out the above method, as described in the above publication, storage means such as silos for storing recycled crushed particles and virgin particles, respectively, and storage resin particles from these storage means. Rubbing supply means such as a rotary feeder and a screw conveyor for quantitatively scraping out, stirring and mixing means for stirring and mixing the different types of resin particles supplied from these scraping and feeding means, mixed particles mixed by this stirring and mixing means. A molding means for molding a new resin foam product as a raw material is required.

Among the above means, the stirring and mixing means is required to rapidly and uniformly stir and mix the recycled pulverized particles and the virgin particles individually supplied from the storage means. As a mixer for mixing different kinds of particles satisfying such demands, conventionally, a mixer as shown in FIGS. 9 and 10 has been proposed. The stirring mixer 80 in the illustrated example is
Two charging ports 83, 84 to which different kinds of resin particles are supplied are juxtaposed on the upper surface of a main body housing 82 having a rectangular shape in a front view (FIG. 9) and a U shape in a side view (FIG. 10). Double spiral blades 85 and 86, which are rotatably driven by motors 91 and 92, are arranged in the inside of the housing, and a discharge port 94 is provided at the center of the bottom of the main body housing 82.

[0005]

The stirring mixer 80 as described above can rapidly and uniformly stir and mix the recycled pulverized particles and the virgin particles individually supplied from the storage means. However, since a double spiral blade that requires advanced manufacturing technology is used as the stirring blade, the device cost is unavoidably high, and the spiral blade is easily broken, so maintenance costs are high. It was.

In view of the above point, the present invention can rapidly and uniformly mix recycled pulverized particles and different particles such as virgin particles at a constant ratio, and can be easily manufactured at a relatively low cost. While being able to
An object of the present invention is to provide a stirrer for mixing different kinds of particles, which can keep maintenance costs low.

[0007]

In order to achieve the above-mentioned object, a heterogeneous particle stirring mixer according to the present invention is provided with a main body housing, a main shaft rotatably driven by being laterally laid on the main body housing, and the main shaft. An agitating blade adapted to rotate integrally, and the agitating blade is supported by a plurality of columns projecting from the main shaft at predetermined intervals in a bent or curved state in a V shape. It is characterized in that it is composed of a plurality of elongated plates.

In a more preferred embodiment of the present invention, a plurality of columns are provided on the main shaft so as to be vertically or horizontally paired with an angular interval of 180 degrees, and the columns are vertically or horizontally provided. In addition, the stirring blades are supported in line symmetry in a plurality of stages at regular intervals in the height direction.

[0009]

[Operation] In the heterogeneous particle stirring mixer according to the present invention configured as described above, since the stirring blade is composed of a plurality of elongated plate bodies bent or curved in a V shape. The supplied different kinds of particles are mixed while being pushed and rotated in the rotation direction by the stirring blade and also pushed and moved in the left and right directions.

Therefore, for example, recycle crushed particles and different kinds of particles such as virgin particles can be rapidly and uniformly stirred and mixed at a constant ratio, and, of course, a stirring blade composed of an elongated plate is used. As compared with the conventional spiral blade used, it can be easily manufactured at low cost, and the maintenance cost can be kept low.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a resin particle compounding apparatus to which an embodiment of a different particle stirring mixer according to the present invention is applied. The resin particle compounding apparatus 10 of the illustrated example is composed of recycled crushed particles having a short diameter of about 1 to 10 mm obtained by crushing a resin foam such as a used Styrofoam product, and a newly pre-expanded resin having the same size as the above. Silos and virgin particles are mixed at a constant ratio, and two silos 11 and 12 that constitute storage means for respectively storing recycled crushed particles and virgin particles, and each silo 1 thereof are provided.
Scraping supply mechanisms 21 and 22 for quantitatively scraping the stored resin particles from Nos. 1 and 12, and these scraping screws 2
And a stirring mixer 30 according to the present invention, which stirs and mixes different types of resin particles supplied from Nos. 1 and 22.

The silos 11 and 12 are the support frame 1
As shown in FIGS. 2 and 3 in addition to FIG. 1, the hopper-type structure is provided with rectangular outlets 15 and 16 (FIG. 3) at the bottom, respectively. The recycled crushed particles and the virgin particles are respectively introduced from the supply ports 13 and 14 provided on the upper surface.

The scraping and feeding mechanisms 21 and 22 are located below the silos 11 and 12, respectively, and the agitator / mixer 30.
It is installed on the top plate portion 32a of the main body housing 32 of FIG.
As you can see by referring to, Geared Motor 2
5, scraping screws 23 and 24 are rotatably driven by belts 25a and 26a.

Discharge ports 15 and 16 of the silos 11 and 12 are positioned on the outer ends of the scraping screws 23 and 24, and recycled crushed particles and virgin particles are discharged from the discharge ports 15 and 16 by the scraping screws 23 and 24. And is conveyed to the rectangular input ports 27, 28 provided on the center line C viewed in the left-right direction of the top plate portion 32a of the stirring / mixing machine 30, and the stirring / mixing is performed from the input ports 27, 28. It can be dropped into the machine 30 and supplied. In this case, the amount of resin particles supplied to the agitator / mixer 30 is adjusted by the rotation speed of the scraping screws 23 and 24, and the ratio of the amount of recycled pulverized particles and virgin particles to the agitator / mixer 30 can be kept constant. It is like this.

The agitator / mixer 30 is supported by four foot frames 54 provided with casters 52 and is seen from the front as can be seen by referring to FIGS. 4 and 5 in addition to FIG. Is a rectangular shape and a side view (FIG. 2) is a substantially U-shaped main body housing 32, and a geared motor 34 installed horizontally on the main body housing 30 and installed at the lower part of one side.
By a main shaft 35 which is rotationally driven by a belt 34a.
And a stirring blade 4 adapted to rotate integrally with the main shaft.
It has 0 and.

In this case, the main shaft 35 has a pair of upper and lower ends or a left and right end, respectively, in the center and the both ends.
A total of six columns 41, 42, 43, 44, 45, 46 are provided vertically and laterally at three intervals with an angle interval of 0 degree, and the upper or left upper columns of the columns 41 to 43 are attached. The lateral side portion 47 is integrally attached so as to be connected,
The lateral side portion 48 is integrally attached so as to connect the upper ends of the lower or right columns 44 to 45.

The stirring blade 40 is provided between the upper and lower three columns of the main shaft 35 and the three columns (41-
42, 42-43, 44-45, 45-46)
It is composed of a plurality of elongated metal plates which are fixedly supported in a state of being bent in a V shape. More specifically, the upper and lower or left and right columns 41 to 46 are agitating blades 40, 40, 40 made of elongated plates bent in the "U" shape at regular intervals in the height direction. ,
─ are supported and fixed in line symmetry so that they project in two steps in opposite directions. In this case, the upper and lower stirring blades 40,
40 is arranged so as to form a pair of diamonds on both sides of the central columns 42 and 45 in a plan view (FIG. 5).

At the lower part of the front side of this agitating mixer 30, a required number of outlets 39, 39, for sending out the mixed resin particles to the molding machine by air transportation or the like are provided in a protruding manner (FIG. 1). . In the stirring and mixing machine 30 of the present embodiment having the above-mentioned configuration, the stirring blades 40, 40, ... Are made up of elongated plate members which are bent or curved in a V-shape. The recycled pulverized particles and the virgin particles dropped and supplied from the ports 27 and 28 into the stirring and mixing machine 30 are pushed in the rotating direction by the stirring blades 40, 40, while being mixed and pushed in the left and right directions. Can be mixed.

Therefore, the recycled pulverized particles and the virgin particles can be rapidly and uniformly stirred and mixed at a constant ratio, and the stirring blades 40, 40, which are composed of elongated plates, are used. Therefore, it can be easily manufactured at low cost as compared with the conventional spiral blade, and the maintenance cost can be kept low.

In addition to the above construction, in the present embodiment, the agitating / mixing device 30 is operated from the scraping and feeding mechanisms 21 and 22.
In order to monitor the supply state (whether or not it is supplied) of the resin particles to the lower surface of the top plate portion 32a of the stirring mixer 30, the resin particle supply state detection as shown in FIGS. 6 and 7 is detected. Mechanisms 61 and 62 are provided. The resin particle supply state detecting mechanisms 61 and 62 have basically the same configuration, and the resin particles dropped and supplied from the dropping ports 27 and 28 to the agitating mixer 30 by the scraping screws 23 and 24 collide with each other. Thus, the blade 63 is provided and the pair of L-shaped brackets 61a, 61b and 62 are formed by the falling resin particles (recycled crushed particles P, virgin particles Q).
A rotary body 64 with blades, which is configured to rotate a rotary shaft 64 pivotally mounted on a and 62b, and a predetermined number of irregularities are formed on an outer peripheral portion of the rotary body 65 fixed to one end of the rotary shaft 64. An optical detector 70 having a known "U" -shaped photocoupler 68 having a light emitting device and a light receiving device which are arranged to face each other so as to sandwich the signal disc 67 and the outer peripheral portion of the signal disc 67; It consists of

In this case, the four blades 63 fixed to the rotary shaft 64 of the rotary body 65 with blades at equal angular intervals (90 degrees) have rectangular notch openings 63a on the base side (rotary shaft side) thereof. Has been formed. By forming the notch opening 63a on the base side of the blade 63 in this manner, it is possible to reduce the situation in which the resin particles adhere to the blade 63 in a dumpling shape due to static electricity or the like.

The detector 70 includes the photo coupler 68.
A pulse is generated each time the concave portion of the signal disk 67 passes through, and a detection signal composed of this pulse train is supplied to the control unit (control panel) 100 (FIG. 8). The control unit 100 measures the pulse interval of the detection signal, and when the subsequent pulse does not come after a certain time or more from the previous pulse, it means that the bladed rotor 65 is not rotating, that is, When it is judged that recycled crushed particles or virgin particles are not dropped and supplied from the charging port 27 or 28, for example, an alarm 72 provided on a control panel or the like or a warning lamp 7 is provided.
Notify the administrator that an abnormality has occurred by blinking 3 and the supply ratio of recycled pulverized particles or virgin particles at this time is not as expected,
In order to stop the operation of the scraping supply mechanisms 21 and 22 and the stirring and mixing machine 30, the electric power supply to the motors 25, 26 and 34 is stopped.

In addition to the above, the silos 11, 12
The stored resin particles are smoothly discharged to the side peripheral portions of the discharge ports 15, 16
Vibration generators 72 such as an eccentric weight type or an ultrasonic vibration type are attached so as to be supplied to the scraping supply mechanisms 21 and 22. Further, an ultrasonic humidifier 74 with a blower is attached to one side of the main body housing 32 of the agitator / mixer 30 so that humidified air is supplied from the humidifier 74 into the agitator / mixer 30. Has become. As a result, static electricity generated by rubbing resin particles with each other is reduced, and it is possible to reduce the situation in which resin particles adhere to each part, are not mixed in the form of dumpling, and are clogged in the outlets 39, 39 ,. To be done. The operation of the vibration generator 72 and the humidifier 74 can be controlled by the control panel 100.

In the above description, the case where two kinds of resin particles are stirred and mixed has been described as an example. However, the present invention is not limited to the resin particles, but a different particle stirring mixer for stirring and mixing other granular materials such as feed. It can also be applied to, and the type of particles mixed is 2
It is needless to say that the number is not limited to three, and three or more types may be used.

[0025]

As can be understood from the above description, according to the different particle stirring mixer according to the present invention, the stirring blade is composed of a plurality of elongated plate members bent or curved in a V shape. Therefore, the supplied different kinds of particles are mixed while being pushed in the rotational direction and the left-right direction by the stirring blades. Therefore, for example, it is possible to rapidly stir and mix different kinds of particles such as recycled pulverized particles and virgin particles at a constant ratio rapidly, and of course, since a stirring blade composed of an elongated plate is used, As compared with the one using the spiral blade, it can be easily manufactured at low cost, and the maintenance cost can be kept low.

[Brief description of drawings]

FIG. 1 is a perspective view showing a resin particle blending apparatus to which an embodiment of a heterogeneous particle stirring mixer according to the present invention is applied.

2 is a side view of the device shown in FIG. 1. FIG.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a perspective view showing details of a main part of the stirring mixer shown in FIG.

5 is a cross-sectional view taken along the line BB of FIG.

6 is a perspective view showing a pair of resin particle supply state detection mechanisms attached to the apparatus of FIG.

7 is a perspective view showing details of a resin particle supply state detection mechanism attached to the apparatus of FIG.

FIG. 8 is a schematic diagram showing a control system of the apparatus of FIG.

FIG. 9 is a front view showing an example of a conventional different particle agitation mixer.

FIG. 10 is a side view of the stirrer for mixing different kinds of particles shown in FIG. 9;

[Explanation of symbols]

 10 Resin Particle Blending Device 11, 12 Silo 21, 22 Scraping Supply Mechanism 30 Stirring Mixer 32 Main Body Housing 34 Motor 35 Main Spindle 40 Stirring Blade 41-46 Strut

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Claims (2)

[Claims] 1. A main body housing, a main shaft that is rotatably driven by being laterally mounted on the main body housing, and a stirring blade that is configured to rotate integrally with the main shaft, wherein the stirring blade is attached to the main shaft. A heterogeneous particle agitation mixer, comprising a plurality of elongated plate members supported by a plurality of pillars protruding at predetermined intervals in a bent or curved shape in a V shape. 2. A plurality of columns are projected from the main shaft so as to form a pair vertically or horizontally with an angular interval of 180 degrees, and these columns vertically or horizontally have a constant height direction. 2. The different particle stirring mixer according to claim 1, wherein the stirring blades are supported in line symmetry with a plurality of stages at intervals.