JP3407624B2 - Swing type sorting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oscillating repulsion type separation apparatus (hereinafter referred to as an "oscillating type") used for the treatment of general waste and conversion to solid fuel (RDF). Sorting device). 2. Description of the Related Art An oscillating type separation apparatus is used as a waste separation apparatus used in a process of converting waste into a solid fuel (RDF). As shown in FIGS. 8 to 10, a conventional swing type sorting device (also referred to as a ballistic separator) 29 is
The plate 1 attached to the crankshaft 2 and inclined at about 3 to 15 degrees is rotated in the direction of the arrow shown in FIG.
swings by the movement of the crankshaft 2 which rotates about m,
Utilizing the difference in repulsive force of the selected substances 7 such as general waste and the like, the mixed substances 7 are mixed with a soft and non-repellent substance 17 such as paper or film plastic and a metal, hard plastic, cardboard box piece. Two kinds of hard and repulsive substances 15 such as
This is an apparatus that separates into three types of small-diameter substances 16 such as kitchenware, glass pieces, set goods, and small metal pieces. The plate 1 includes a plate formed of one plate and a plate in which the plate is divided in a longitudinal direction or a lateral direction as shown in FIGS. [0003] The conventional swing type sorting apparatus has the following problems. Conventionally, as described above, there is a method of separating using a difference between a plate and a repulsive force of a substance. For this reason, in the case of a hard and easily repellent substance, a substance 15 which is a flammable substance such as a cardboard box piece and a hard plastic, but is relatively easily repelled, falls down inclining as shown in FIG. It will be collected with the thing. Therefore, the accuracy of separating combustibles and non-combustibles is poor, and the recovery rate of combustibles decreases. [0004] Even combustible materials, such as paper and film-like plastic, which are unlikely to repel, are entangled in metal or the like which tends to repel and are sent downward inclining, reducing the recovery rate of combustible materials. Slowing the inclination angle or increasing the rotation speed of the plate in order to increase the recovery rate will increase the force of sending upwards, not only the cardboard box pieces and hard plastic,
Substances such as metals are also sent upwardly on the slope, and the accuracy of separating combustibles and non-combustibles above the slope decreases. Conventionally, in order to increase the recovery rate, as shown in FIGS. 9 and 10, techniques such as extending the longitudinal direction to lengthen the residence time of the substance on the plate, and extending the lateral direction to disperse the substance, etc. However, there were drawbacks such as large equipment and high cost. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide an oscillating separation apparatus capable of separating and recovering waste with high efficiency. Means for Solving the Problems The invention according to claim 1 is:
A swingable plate having a drop port at a lower end below the slope, which is disposed at a predetermined angle, and the material to be sorted on the plate is separated by the difference in the repulsive force by the rocking plate. In the oscillating type sorting apparatus, a repulsion plate for sending a relatively easily repellent combustible material such as paper and plastic in the material to be sorted to the upper side of the plate is provided at a lower end side of the drop port on the plate. It is characterized by being provided. Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view according to an embodiment of a swing type sorting apparatus according to the present invention, and FIG. 2 is a side view. The lower end of the inclined plate 1 has a drop port 6
Is provided. Further, a repulsion plate 3 is provided at the lower end of the falling port 6 on the plate 1 in a direction perpendicular to the plate 1.
Is provided. Plate 1 has 3 ~
It is attached with an inclination of about 15 degrees. The plate 1 is provided with sieve holes 5. By dropping through the sieve hole 5, the small particle size substance 16 can be taken out separately from the hard and easily repellent substance 15 and the soft and hard to repel substance 17. However, the setting of the sieve hole 5 is optional. The crankshaft 2 is rotated by an electric motor (not shown) in the direction of the arrow shown in FIG. 2, and the movement of the crankshaft 2 causes the plate 1 to swing. The sorting principle of the oscillating sorting device 29 is to sort on the basis of the difference in trajectory when the selected substance dropped on the oscillating plate 1 rebounds and rebounds on the plate 1. The hard and easily repelling substance 15 drops from the falling port 6 below the inclination because the direction of repulsion is greatly affected by the inclination angle of the plate 1. The material 17 which is soft and hard to repel has a small rebound on the plate 1, and is conveyed above the inclination by the swinging motion of the plate 1 and falls therefrom. Further, the small particle size substance 16 is sieved by the sieve hole 5 on the plate 1 and falls just below the plate 1. The optimal inclination angle of the plate 1 is about 3 to 10 degrees. The rotation speed of the crankshaft 2 is 100 to
About 200 rpm is appropriate. Next, the operation of the apparatus of the present invention will be described with reference to FIGS. As a material to be selected, one piece of a cardboard box was taken as an example for easy understanding. As the plate 1 swings, the cardboard box piece 4 that has been inclined downward moves downward as shown by the arrow in FIG. As shown in FIG. 4, the cardboard box piece 4 is a repulsion plate 3 provided on the inclined lower end of the drop port 6 at the inclined lower end of the plate 1.
And is sent upward by the repulsion plate 3. In the related art having no repulsion plate shown in FIG. 8, the cardboard box piece 4 falls down as it is. Further, as shown in FIG. 5, the cardboard box piece 4 moves upwardly of the plate 1, and as shown in FIG. And fall down from the upper end of the slope to be collected. For this reason, the separation accuracy of combustibles is improved. Further, even when paper or the like is entangled with metal or the like, conventionally, the paper or film-like plastic or the like has fallen down to the slope of the plate 1 together with the metal or the like. It is sent forward again, and the number of collisions with the plate 1 is increased, so that the effect of disassembly is generated, the sorting accuracy is improved, and the recovery rate of combustibles is improved. Furthermore, small particles such as kitchen garbage adhered to metal or the like also fall below the sieve hole 5 of the plate 1 due to an increase in the number of collisions with the plate 1, so that the sorting accuracy is further improved and the combustibility is increased. The collection rate of goods is improved. Next, the present invention will be described with reference to examples. FIG. 7 is a process diagram showing a general waste separation and combustible fuel conversion process (RDF production flow) using the oscillating separation device of the present invention shown in FIGS. First, an outline of the RDF manufacturing flow shown in FIG. 7 will be described as follows. The waste (garbage) carried from the waste pit 21 to the primary crushing equipment 23 is primarily crushed by the crushing equipment 23. 22 is a garbage crane. The primary crushed waste is conveyed to the dryer 27 by the conveyors 24 and 56. Immediately after the primary crushing, the refuse is dried by the dryer 27. 49 is a hot blast stove, 46 is a fuel tank, 51 and 69
Is a pump, 50 is a fuel service tank, 25 is an induction fan, and 26 is a dryer cyclone. 43 is a heat exchanger for treating exhaust gas from the dryer, 44 is a cooling tower, 42 is a deodorizer, and 52 is a fan for inducing the deodorizer. The dried refuse is conveyed by the conveyor 47 to the vibrating conveyor 28 where it is loosened and uniformly supplied to the swing type sorting apparatus 29 of the present invention. The swing type sorting apparatus 29 of the present invention provided with a repulsion plate
In the above, the substance 15 which is hard and easily repelled, the substance 16 having a small particle diameter, and the substance 17 which is soft and hard to repel are accurately separated. The soft and resistant material 17 is secondarily crushed by the secondary crusher 30 and passed through the secondary crusher induction fan 31 and the secondary crusher cyclone 37 to the conveyor 5.
It is carried to 4. Most of the refuse falling down the slope of the plate of the oscillating sorter 29 is a substance 15 which is hard and easily repelled, but is a composite of incombustible material such as metal and combustible material such as hard plastic. . Therefore, in order to further increase the separation accuracy, the hard and easily repelling substance 15 is returned to the primary crushing equipment 23 by a conveyor 61 or the like, and is again returned to the primary crushing equipment 23.
Can reduce the crushing particle size. By repeating this step once or a plurality of times, almost all of the refuse is converted into a material having a small particle size. The hard and easily repellent material thus formed into a material having a small particle size is conveyed together with the material 16 having a small particle size to a wind separator 34 by a conveyor 53, where the combustible materials are separated by wind and separated from residues. Then, the combustibles are conveyed to the conveyor 54 via the wind separator cyclone 36. 33 is a bag filter, 32 is an attraction fan, 64,
65 is a container. The combustibles collected in the hopper 62 by the conveyor 54 are mixed with slaked lime supplied from the slaked lime feeder 39 and mixed by the mixer 40. Next, the solid fuel (RDF) is compressed by the compression molding device 41.
Be transformed into Then, the RDF is transported by the conveyor 55 to be packed 66. Further, the odor generated by the RDF is deodorized by the deodorizer 59. 58 is a bag filter, 67 is a container, and 60 is a deodorizer cyclone. In the RDF manufacturing flow of the embodiment shown in FIG. 7, the use conditions of the oscillating sorter 29 of the present invention are set as follows, and general waste (household waste) is set.
Was tested. Table 1 shows the results. Conditions of use: Plate tilt angle: 6 degrees Crankshaft rotation speed: 150 rpm For comparison, the swing type sorting apparatus 29 shown in FIGS. A separation test was performed. The results are shown in Table 1. [Table 1] From Table 1, it can be seen that the example of the present invention has a smaller amount of sloping downward discharge than the comparative example, and the combustibles such as cardboard box pieces are sent upward, thus improving the recovery rate of the combustibles as compared with the comparative example. You can see that it is. As described above, according to the present invention, by providing a repulsion plate on the lower end side of the falling port at the inclined lower end of the plate, paper, plastic, etc., such as a cardboard box piece can be obtained. The relatively repellent material is sent upward with the soft and hard to repel material along the slope of the plate. More combustibles are generated, more combustibles can be separated from non-combustibles, and a high recovery rate of combustibles can be obtained.
High efficiency of the DF production is achieved, thus providing useful effects.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view according to an embodiment of a swing type sorting apparatus according to the present invention. FIG. 2 is a side view according to the embodiment of the swing type sorting apparatus of the present invention. FIG. 3 is a side view illustrating the operation of the swing type sorting apparatus according to the embodiment of the present invention. FIG. 4 is a side view illustrating the operation of the swing type sorting apparatus according to the embodiment of the present invention. FIG. 5 is a side view for explaining the operation of the apparatus according to the embodiment of the swing type sorting apparatus of the present invention. FIG. 6 is a side view for explaining the operation of the apparatus according to the embodiment of the swing type sorting apparatus of the present invention. FIG. 7 is a process diagram showing a general waste separation and combustible fuel conversion process according to an embodiment of the present invention. FIG. 8 is a side view showing an example of a conventional swing type sorting apparatus. FIG. 9 is a plan view showing an example of a plate of a conventional swing type sorting apparatus. FIG. 10 is a plan view showing another example of the plate of the conventional swing type sorting apparatus. [Explanation of Signs] 1: Plate 2: Crankshaft 3: Rebound plate 4: Corrugated cardboard box piece 5: Sieve hole 6: Drop port 7: Sorted material 15: Hard and easily repellent material 16: Small particle size material 17 : Soft and resistant material 21: Waste pit 22: Waste crane 23: Primary crushing equipment 24: Conveyor 25: Attraction fan 26: Dryer cyclone 27: Dryer 28: Vibratory conveyor 29: Swing type sorting device 30: Secondary Crushing equipment 31: Secondary crushing equipment attraction fan 32: Fan 33: Bag filter 34: Wind separator 36: Wind separator cyclone 37: Secondary crusher cyclone 39: Slaked lime 40: Mixer 41: Compression molding device 42: Deodorization Apparatus 43: heat exchanger 44: cooling tower 46: fuel tank 47: conveyor 49: hot blast stove 50: fuel service tank 51: pump 52: deodorizing device inducing fan 53 ~ 57: Conveyor 58: Bag filter 59: Deodorizing device 60: Deodorizing device inducing fan 61: Conveyor 62: Hopper 64: Container 65: Container 66: RDF packing 67: Container 69: Pump

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kuniichi Okuyama 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nippon Kokan Co., Ltd. (72) Inventor Mikiyuki Asano 1-1-2 Marunouchi, Chiyoda-ku, Tokyo (56) References JP-A-54-73362 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B07B 1/00-15/00

Claims (1)

(57) Claims 1. A swingable plate having a drop port at a lower end portion below a slope, which is disposed to be inclined at a predetermined angle, is provided,
A rocking type separation apparatus for separating a material to be sorted on the plate by a difference in repulsive force by the swinging plate, wherein paper and plastic in the material to be sorted are provided at a lower end side of the dropping port on the plate. And a repulsion plate for feeding a relatively easily repellent combustible material to the inclined upper side of the plate.