JP2993855B2 - Different particle mixing mixer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of uniformly mixing a recycled pulverized particle obtained by pulverizing a resin foam such as a used styrofoam product and a newly pre-expanded virgin particle at a predetermined ratio. The present invention relates to a heterogeneous particle stirring mixer suitable for mixing.

[0002]

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

In carrying out the above method, as described in the above-mentioned publication, storage means such as silos for storing recycled pulverized particles and virgin particles, respectively, and storage resin particles from each of these storage means. A scraping supply means such as a rotary feeder or a screw conveyor that quantitatively scrapes the resin particles, a stirring and mixing means for stirring and mixing the different kinds of resin particles supplied from these scraping supply means, and a mixed particle mixed by the stirring and mixing means. Molding means for molding a new resin foam product as a raw material is required.

[0004] Among the above means, the stirring and mixing means is required to rapidly and uniformly mix the recycled pulverized particles and the virgin particles which are individually supplied from the storage means at a constant ratio. As a dissimilar particle stirring mixer satisfying such a demand, the one shown in FIGS. 9 and 10 has been conventionally proposed. The stirring mixer 80 in the illustrated example includes:
Two inlets 83 and 84 for supplying different kinds of resin particles are provided side by side on the upper surface of a main body housing 82 which is rectangular in front view (FIG. 9) and U-shaped in side view (FIG. 10). Double spiral blades 85, 86 driven by motors 91, 92 are arranged inside, 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 mix the recycled pulverized particles and the virgin particles individually supplied from the storage means at a constant ratio. However, since double spiral blades that require advanced manufacturing technology are used as stirring blades, equipment costs must be extremely high, and maintenance costs are high because spiral blades are easily broken. Had become.

In view of the above, the present invention can mix different kinds of particles such as recycled pulverized particles and virgin particles quickly and uniformly at a constant ratio, and can be easily manufactured at a relatively low cost. While being able to
It is an object of the present invention to provide a dissimilar particle stirring and mixing machine that can reduce maintenance costs and the like.

[0007]

In order to achieve the above-mentioned object, a dissimilar particle stirring and mixing machine according to the present invention comprises a main body housing, a main shaft transversely driven by the main body housing, and a main shaft. A stirring blade adapted to rotate integrally, the stirring blade being supported in a state of being bent or curved in a `` K '' shape on a plurality of pillars protruding from the main shaft at predetermined intervals. It is characterized by being constituted by a plurality of elongated plate bodies.

As a more preferred embodiment of the present invention, a plurality of columns are protruded from the main shaft at an angle of 180 degrees so as to form a pair in the vertical or horizontal direction. The stirring blades are supported at a certain interval in the height direction, and the stirring blades are supported in a plurality of stages in line symmetry.

[0009]

In the dissimilar particle stirring and mixing machine according to the present invention having the above-described structure, the stirring blade is constituted by a plurality of elongated plates bent or curved in a "-" shape. The different kinds of particles supplied are mixed while being pushed and rotated in the left and right directions while being pushed and rotated in the rotation direction by the stirring blade.

For this reason, it is possible to rapidly and uniformly mix different kinds of particles, such as recycled pulverized particles and virgin particles, at a constant ratio, and of course, because a stirring blade composed of an elongated plate is used. In addition, it can be easily manufactured at low cost as compared with the case where the conventional spiral blade is used, and the maintenance cost and the like can be suppressed low.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a resin particle blending apparatus to which an embodiment of a heterogeneous particle stirring mixer according to the present invention is applied. In the illustrated example, the resin particle blending apparatus 10 includes recycled pulverized particles having a minor diameter of about 1 to 10 mm obtained by pulverizing a resin foam such as a used Styrofoam product and a newly pre-foamed particle having the same size as that described above. And silos 11 and 12 constituting storage means for storing recycled pulverized particles and virgin particles, respectively.
And scraping supply mechanisms 21 and 22 for quantitatively scraping the stored resin particles from the first and the second, and these scraping screws 2
And a stirring and mixing machine 30 according to the present invention for stirring and mixing different kinds of resin particles supplied from the first and second resin particles.

The silos 11 and 12 are provided on the support frame 1.
7, a hopper-type structure provided with rectangular outlets 15 and 16 (FIG. 3) at the bottom, respectively, as can be clearly understood by referring to FIGS. 2 and 3 in addition to FIG. Recycled pulverized particles and virgin particles are supplied from supply ports 13 and 14 provided in the upper surface portion, respectively.

The scraping supply mechanisms 21 and 22 are provided below the silos 11 and 12, respectively.
3 is installed on the top plate portion 32a of the main body housing 32 with a positional relationship shifted from the center thereof back and forth.
As you can see, see Geared Motor 2
5 and 26 are provided with scraping screws 23 and 24 which are driven to rotate via belts 25a and 26a.

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

The stirring and mixing machine 30 is, as can be clearly understood from FIGS. 4 and 5 in addition to FIG. 1, a front view supported by four foot frames 54 provided with casters 52. Is a rectangular, side view (FIG. 2) substantially U-shaped main body housing 32, and a geared motor 34 horizontally laid on the main body housing 30 and installed at a lower portion on one side.
Shaft 35 driven to rotate via a belt 34a by the
And a stirring blade 4 adapted to rotate integrally with the main shaft.
0.

Here, the main shaft 35 is provided with a pair of upper and lower or left and right sides at the both ends and the center, respectively.
A total of six columns 41, 42, 43, 44, 45, and 46 are provided projecting vertically and horizontally at three intervals at an angle of 0 degrees, and the upper ends of the upper or left columns 41 to 43 are removed. The side portions 47 are integrally attached so as to be connected,
A side portion 48 is integrally attached so as to connect the upper ends of the lower or right supports 44 to 45.

The agitating blades 40 are provided between the upper and lower three columns (41-4) projecting from both ends and the center of the main shaft 35.
(Between 42, 42-43, 44-45, 45-46)
And a plurality of elongated metal plates fixedly supported in a state of being bent in a "U" shape. More specifically, the stirring blades 40, 40, 40 formed of the elongated plate bodies bent in the “C” shape at predetermined intervals in the height direction on the upper and lower or left and right columns 41 to 46, respectively. ,
支持 are supported and fixed symmetrically with each other so that ─ projects in the opposite direction by two steps. In this case, the upper and lower stirring blades 40,
Numeral 40 is arranged so as to form a pair of rhombuses on both sides of the central columns 42 and 45 in plan view (FIG. 5).

A required number of outlets 39, 39,... For projecting the mixed resin particles to the molding machine by pneumatic transportation or the like are provided at the lower portion on the front side of the stirring mixer 30 (FIG. 1). . In the stirring and mixing machine 30 of the present embodiment having the above-described configuration, the stirring blades 40, 40, and そ れ ぞ れ are each formed of an elongated plate that is bent or curved in a “く” shape. The recycle pulverized particles and virgin particles dropped and supplied into the stirring mixer 30 from the ports 27 and 28 are pushed by the stirring blades 40, 40, ─ in the rotation direction while being mixed while being pushed in the left and right direction. Can be mixed.

For this reason, the recycle pulverized particles and the virgin particles can be rapidly and uniformly mixed at a fixed ratio, and of course, the stirring blades 40, 40,. Therefore, it can be easily manufactured at low cost as compared with the case where the conventional spiral blade is used, and the maintenance cost and the like can be reduced.

In addition to the above configuration, in the present embodiment, the agitating mixer 30
In order to monitor the supply state (whether or not the resin particles are supplied) 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. Mechanisms 61 and 62 are provided. The resin particle supply state detection mechanisms 61 and 62 have basically the same configuration, and the resin particles dropped and supplied from the ejection ports 27 and 28 to the stirring mixer 30 by the scraping screws 23 and 24 collide. The blades 63 are provided as described above, and a pair of L-shaped brackets 61a, 61b and 62 are formed by falling resin particles (recycled pulverized particles P and virgin particles Q).
a, a rotating body 65 with blades, on which a rotating shaft 64 attached to a shaft 62b is rotated, and a predetermined number of irregularities formed on an outer peripheral portion fixed to one end of the rotating shaft 64 of the rotating body 65. An optical detector 70 including a known "U" -shaped photocoupler 68 having a light-emitting device and a light-receiving device which are disposed so as to sandwich the signal disk 67 and the outer peripheral portion of the signal disk 67, Consists of

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

The detector 70 is connected to the photocoupler 68
Is generated each time the concave portion of the signal disk 67 passes, and a detection signal composed of this pulse train is supplied to a control unit (control panel) 100 (FIG. 8). The control unit 100 measures the pulse interval of the detection signal, and when a later pulse does not come after a lapse of a predetermined time or more from the preceding pulse, the winged rotor 65 is not rotating, that is, It is determined that recycled pulverized particles or virgin particles have not been dropped and supplied from the inlet 27 or 28, for example, to sound an alarm 72 provided on a control panel or the like,
In addition to notifying the administrator that an abnormality has occurred by blinking 3 or the like, and at this time, the supply ratio of recycled pulverized particles or virgin particles is not as expected,
The power supply to each of the motors 25, 26, 34 is stopped in order to stop the operations of the scraping supply mechanisms 21, 22 and the stirring mixer 30.

In addition to the above, the silos 11, 12
In the side peripheral portion of the storage resin particles, the outlets 15 and 16 are smoothly placed.
An eccentric weight type or an ultrasonic vibration type vibration generating device 72 is attached so that the raw materials are 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 stirring mixer 30 so that humidified air is supplied from the humidifier 74 into the stirring mixer 30. Has become. As a result, static electricity generated by the rubbing of the resin particles is reduced, and the resin particles are prevented from adhering to each part, forming a dumpling and being mixed, and clogging the outlets 39, 39, ─. Is done. The operation of the vibration generator 72 and the humidifier 74 can also be controlled by the control panel 100.

Although the above description has been made by taking as an example the case where two kinds of resin particles are stirred and mixed, the present invention is not limited to the resin particles and other kinds of particle mixed mixers for stirring and mixing other granular materials such as feed. And the type of particles to be mixed is 2
It is needless to say that the type is not limited and three or more types may be used.

[0025]

As will be understood from the above description, according to the dissimilar particle stirring and mixing machine of the present invention, the stirring blade is constituted by a plurality of elongated plates bent or curved in a "-" shape. As a result, the supplied different kinds of particles are mixed while being pushed in the rotation direction and the left and right direction by the stirring blade. For this reason, for example, different types of particles such as recycled pulverized particles and 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. It is possible to produce easily at low cost as compared with the case where the spiral blade is used, and it is possible to reduce the maintenance cost and the like.

[Brief description of the drawings]

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

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

FIG. 3 is a sectional view taken along the line AA of FIG. 2;

FIG. 4 is a perspective view showing details of a main part of the stirring mixer shown in FIG. 1;

FIG. 5 is a sectional view taken along line BB of FIG. 2;

6 is a perspective view showing a pair of resin particle supply state detection mechanisms attached to the apparatus of FIG. 1;

FIG. 7 is a perspective view showing details of a resin particle supply state detection mechanism attached to the apparatus of FIG. 1;

FIG. 8 is a schematic diagram showing a control system of the apparatus shown in FIG. 1;

FIG. 9 is a front view showing an example of a conventional heterogeneous particle stirring mixer.

FIG. 10 is a side view of the heterogeneous particle stirring and mixing machine of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Resin particle compounding apparatus 11, 12 Silo 21, 22 Scavenging supply mechanism 30 Stirrer / mixer 32 Main body housing 34 Motor 35 Main shaft 40 Stirrer blade 41-46 Column

Continued on the front page (51) Int.Cl. ⁶ Identification code FI B29K 105: 26

Claims (2)

(57) [Claims] 1. A main body housing, a main shaft transversely driven by the main body housing and driven to rotate, and a stirring blade configured to rotate integrally with the main shaft, wherein the stirring blade is attached to the main shaft. A heterogeneous particle agitating and mixing machine comprising a plurality of elongated plates supported in a state of being bent or curved in a "L" shape on a plurality of columns protruding at predetermined intervals. 2. A plurality of columns are projected at an angle of 180 degrees so as to form a pair with the main shaft in the vertical and horizontal directions, and each of the vertical and horizontal columns has a predetermined height. 2. The heterogeneous particle stirring and mixing machine according to claim 1, wherein the stirring blades are supported at a plurality of stages in a line-symmetric manner at intervals.