JPS6014613B2 - Granulation spherical machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is similar to a granulator for powder and granules, and more specifically, it is an apparatus for granulating wet or humidified powder and granules (hereinafter simply referred to as raw materials) and spheroidizing them. It is related to.

Conventionally, there are various types of equipment for granulating and spheroidizing raw materials, such as drum-type granulators, rotating plate-type granulators, vibrating-type granulators, fluidized bed-type granulators, and mixer-type granulators. A granulator is used.

However, each of these had advantages and disadvantages, and not all of them were satisfactory. For example, a drum-type granulator, which mainly imparts only a transfer effect to raw material particles, has slow particle growth and low throughput, while a rotating plate-type granulator, although good at spherical formation and uniform particle size, In addition to low processing capacity, automatic discharge of large particles is difficult and requires a considerable amount of effort. Furthermore, it has been difficult to obtain uniform and good spherical products with desired hardness or cohesive strength using a fluidized bed granulator or a mixing machine granulator. On the other hand, although it is not generally used at present, vibratory granulators have the advantage of being able to effectively utilize the entire area of the equipment, as well as being compact and requiring relatively little vibration force. The vibrating rotary disk type granulator has many points that should satisfy the purpose, such as excellent granulation uniformity. The present invention makes use of the advantages of this vibrating rotary disk type granulator, and provides an apparatus that can achieve good particle hardness, uniformity, etc., and excellent sphericity of particles with less power, and can increase processing capacity. It is something. Next, the configuration of the present invention will be explained using examples.

Reference numeral 1 denotes a machine base which rotatably supports a rotary shaft 7 having a bucket core 6 through a bearing 5.

A rotary ring 10 is rotatably supported on the eccentric portion 6 via a bearing 8. The inner circumferential surface of the rotating mechanism 10 has an outer circumferential surface slightly smaller than the inner circumferential surface, and is arranged so as to be in contact with the outer circumferential surface of the fixed mechanism 11 fixedly provided on the machine base 1 at one point. It is grained. Note that the amount of eccentricity of the eccentric portion 3 with respect to the rotating shaft 7 is the same value as one-half of the difference between the inner diameter of the inner peripheral surface of the rotary member 7 and the outer diameter of the fixed member 11, but especially the inner circumference of the rotating ring 10 When attaching an elastic body such as rubber to the outer circumferential surface of the surface and fixation theory 11, the eccentricity is set to be larger than the value by a pseudo amount. Further, in accordance with this, a balance weight 13 is disposed on the rotating shaft 7 according to the amount of unbalance caused by the eccentric portion 9, thereby reducing unnecessary vibrations to the machine base 1 and the device. In addition, an elastic body such as rubber or resin is attached to the inner circumferential surface of the rotating ring 10 and the outer circumferential surface of the stationary ring 11 as described above, and a raised strip is arranged on both circumferential surfaces to increase the frictional resistance between the two circumferential surfaces. Various design changes can be made, such as a form in which an internal gear and an external gear are disposed between the two circumferential surfaces to completely eliminate the submergence between the two circumferential surfaces. Reference numeral 9 denotes a rotary table, which is positioned above the rotary wheel 10 and is fixed to the rotary wheel 10 so as to be integrated therewith.

2 is supported by the machine stand 1 in the outer shade, and a fixing stand 4 having a raw material supply port 3 penetrated above is disposed approximately in the center of the outer land 2, and the nuclear fixing stand 4 The lower surface of the rotary table 9 and the upper surface of the rotary table 9 are arranged to face each other with an appropriate distance C, and are illuminated.

Reference numeral 12 denotes a support village for holding the fixed base 4, and by providing the support village 12 with an adjustment mechanism (not shown), the distance C can be adjusted.

Note that 14 is a product discharge port. In the above configuration, the rotary motion imparted to the rotary shaft 7 supported by the bearing 5 fixed to the union 1 by a fly motor (not shown) is transmitted to the eccentric portion 6, but as shown in FIG. The center m of the rotating wheel 10 and the rotating table 9, which are rotatably supported on the 0 part 6, is rotated eccentrically by 0'0 around the center s of the rotating shaft 7, and is arranged in the same D as the rotating shaft 7. Since the inner circumferential surface of the rotating ring 10, which is arranged concentrically with the eccentric part 6, is in contact with the outer circumferential surface of the fixed ring 11, the first contact point a in rotation theory 1 is at the side D. 6 rotates differentially by the difference between the circumferential length of the inner circumferential surface of the rotating theory 10 and the circumferential length of the fixed theory 11, and the contact points a,,, a3, a4, etc. . . , resulting in vibration due to eccentric rotation shown as the locus of point m, or movement that combines rocking and a speed reduction mechanism due to the differential rotation shown as the locus of contact point a.

As a result, vibrations or oscillating rotational motions are repeatedly applied to the fixed rotary table 9, so that the raw material input from the supply port 3 touches the upper surface of the rotary table 9 and the lower surface of the fixed table 4. The above-mentioned vibration, rocking and rotational motions impart a particle transfer action between the two, causing the particles to rapidly grow and become spherical. Moreover, since the distance C between the upper surface of the rotary table 9 and the lower surface of the fixed table 4 is set, an extreme increase in the particle diameter is prevented, and the particles are uniformly sphericalized. Further, the particles in the growing process are removed from the upper surface of the rotating table 9 and the fixed table 4.
It is formed into a granulated product with excellent cohesive strength and hardness because it is subjected to repeated collisions with the lower surface and compression action. Next, the products that have grown into desired grains are overflowed from the upper surface of the rotary table 9 to the outer periphery and taken out from the machine through the discharge port 14. In order to take advantage of the features of the present invention and increase the throughput more efficiently, the humidified raw material is formed into a pellet shape using another granulator as a pre-treatment process, and then the apparatus of the present invention is used. By supplying V to V, spherical granules with even better binding strength can be efficiently obtained. As described in detail above, according to the present invention, extremely efficient granulation or spheroidization is possible because the transfer of particles is effectively promoted by the synergistic effect of vibration and rocking, and the upper surface of the rotating table 9 By maintaining the distance C between the lower surface of the fixing table 4 and the lower surface of the fixing table 4, the growth of giant particles can be prevented and a granulated product that is uniform and has excellent cohesive strength can be obtained. The particle size can be adjusted, and these actions can be performed with a simple structure, eliminating the need for special vibration or rocking mechanisms, and it also has excellent power transmission efficiency, reducing manufacturing costs. The present invention is industrially extremely useful as it is economical in terms of operating costs.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram of the movement of the rotation mechanism 10 with respect to the fixed ring 11 shown in the embodiment. In the figure, 1... Machine base, 2... Outer weight, 3... Connector joint, 4... Fixed base, 5...
...Bearing, 6...Eccentric part, 7...Rotating shaft, 8...
... Bearing, 9 ... Rotating table, 10 ...
...Rotating wheel, 11...Fixed wheel, C...
It is the interval. Figure 1 Figure 2

Claims (1)

[Claims] 1. A fixed base 4 supported by the machine base 1 via an outer casing 2 and having a raw material supply port 3 extending upwardly and penetrating approximately in the center thereof, and rotatably supported by a bearing 5 fixed to the machine base 1. A rotary shaft 7 having an eccentric portion 6, which is rotatably supported by the eccentric portion 6 via a bearing 8, and has an appropriate distance C from the lower surface of the fixed base 4.
a rotating table 9 having an upper surface facing the lower surface of the fixed table 4, a rotating ring 10 having an inner peripheral surface concentric with the bearing 8 provided on the lower side of the rotating table 9; It consists of a fixed ring 11 which is fixed to the machine base 1 and concentrically with the bearing 5, which has an outer circumferential surface slightly smaller than the inner circumferential surface of the rotary ring 10. A granulating and spherical machine characterized by being configured such that one point on the outer circumferential surface of a fixed ring 11 is in contact with the fixed ring 11.