JPS63134044A - Multistage granulator - Google Patents

Abstract

PURPOSE:To simplify the structure around a die by providing at least two sets of a die and a roller in parallel in the vertical direction, and piercing a common shaft for imparting a revolving power to each roller through the respective rollers. CONSTITUTION:A fibrous material 9 which is granular or not pretreated, for example, is charged into a granulation chamber 4 from a charging port 31 at the upper part of a casing 3, compressed and crushed by the upper die 1 and roller 2, and charged into small holes 13. Frictional heat is generated by the compression and crushing, hence the material 9 is dried by the heat and pretreated. The pelletized material 9' dropped from the small holes 13 is com pressed by the lower die 1 and roller 2, and charged into small holes 13. The material 9' extruded from the small holes 13 is cut by a cutter 6 to an appropri ate length, dropped onto the bottom discharge plate 32 of the casing 3 in the form of pellets, and sent out to a discharge port 33.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for granulating and molding materials into pellets. More specifically, the present invention relates to an improvement in a low moisture type (dry type) granulation device that utilizes high pressure.

[Prior Art] Conventionally, as a low moisture type granulation device, for example, the one shown in FIG. 3 is known.

This conventional granulation device includes a cylindrical die A having a large number of small holes A'' passing through from an inner circumferential surface A' to an outer circumferential surface A'';
It consists of a roller B that rotates on its own axis while being in pressure contact with the inner circumferential surface A' of the die A, and that revolves around the central axis to the die.

In this conventional granulating device, the material is compressed between the inner circumferential surface A' and the row 98 by the rotation and revolution of the roller B as shown by the arrow, and is injected into the small hole A ///, and is formed into pellets. The particles are shaped so that they come out from the outer peripheral surface A''.

[Problems to be Solved by the Invention] In the above-mentioned conventional granulation device, the die 8 has a cylindrical shape with a small hole A″′, so the drilling work of the small hole A″′ is difficult. There are problems in that it is troublesome and increases production cost, and there are also problems in durability, such as the die 8 being deformed by the pressure of the roller B. Furthermore, if the small hole A'' is clogged, it must be removed along the circumferential surface of the cylindrical shape, which poses a problem in efficiency of use. Another problem with the granulation apparatus was that it required a considerable amount of pretreatment such as pulverization and adjustment of moisture content.

The present invention was made to solve these problems, and its purpose is to simplify the structure around the dice and to provide a preprocessing function.

Means for Solving Problem L] The granulation device according to the present invention includes a disk-shaped die having a large number of small holes penetrating from the front surface to the back surface and installed horizontally inside the granulation chamber; A roller that rotates on its own axis while being in pressure contact with the surface of the die and revolves around the center of the die, and at least two combinations of these dies and rollers are arranged vertically in parallel, and a common roller that applies a revolving force to each roller is provided. A means is adopted in which a vertical shaft is provided through the center of each die.

[Function] The granulation device according to the present invention has a simple structure in which the die is flat and the roller rotates and revolves on its surface, thereby solving the above-mentioned problems in manufacturing, durability, and usage efficiency. It is something to be solved.

By providing two or more combinations of dies and rollers, the pulverizing function, which is a pretreatment for granulation, and the moisture content adjustment function are provided.

[Example] Hereinafter, an example of the granulation apparatus according to the present invention will be described based on FIGS. 1 and 2.

FIG. 1 shows the main parts of an embodiment of the granulation device according to the present invention. In this embodiment, the die I is disk-shaped, and the surface 1 of the die I is drawn as shown by the arrow. ni roller 2
is designed to rotate and revolve. This dice! , there are two combinations of rollers 2, which are arranged in parallel in the vertical direction,
A common vertical shaft 5 is provided to pass through each die l and apply a revolving force to each roller 2. Dice I
A large number of small holes I3 penetrating from the front surface II to the back surface 12 are provided, but the drilling range of these small holes 13 is limited to the roller 2.
is sufficient within the area of rotation and revolution. Incidentally, since the small hole 13 is drilled in the flat die 1, it can be easily done by using a drill machine or the like. In addition, it is easy to increase the durability by adjusting the plate thickness, material length, etc. of the die l, and a high degree of durability can be obtained by completely preventing deformation and the like.

Note that the number of rollers 2 is arbitrary, but if a large number are provided, it is preferable to arrange them radially from the center of the die 1 in consideration of the balance of revolution.

FIG. 2 shows a structure in which the main parts shown in FIG. 1 are incorporated into the granulation apparatus of the present invention, in which the die 1 is fixedly installed in a casing 3 that can be divided into upper and lower halves. The rollers 2 that rotate and revolve on the surface 11 of the die 1 are each supported by a common vertical shaft 5 that protrudes through the center of the die 1 from below, and the rotation of the vertical shaft 5 causes the rollers 2 to revolves around the center of die l,
Moreover, due to this revolution, the roller 2 rotates on its own axis in relation to the die l. In addition, the vertical shaft 5 is connected at the bottom,
It is connected to a motor 10 via a transmission mechanism 7.

The structure shown in Fig. 2 eliminates drive system members as much as possible from inside the granulation chamber 4, so there is no material 9, 9', etc. that prevents the rotation and revolution of the roller 2. ,
It has the advantage of functioning smoothly.

In the embodiment shown in FIGS. 1 and 2, powdered or unpretreated, e.g., fibrous material 9 enters the granulation chamber 4 through the input port 31 at the top of the casing 3, and enters the granulation chamber 4 from the upper stage. Compressed and crushed by die l and roller 2 to form small holes 13
injected into. Since this compression and pulverization simultaneously dry the material 9 by frictional heat (moisture content adjustment), it has a pretreatment significance as a whole. Then, the pellet-shaped material 9' that fell from the small hole 13 is further transferred to the lower die l.
, it is compressed by the roller 2 and injected into the small hole 13. Note that by adjusting the plate thickness of the die 1, the diameter of the small hole 13, etc., the pretreatment of the upper and lower stages and the degree of granulation can be adjusted. The material 9' pushed out from this small hole 13 is cut into appropriate lengths by a cutter 6 attached to the vertical shaft 5, becomes a pellet, falls onto the discharge plate 32 at the bottom of the casing 3, and flows into the discharge port 33. leak. Note that the drawing shows an example in which part of the roller 2 is replaced with a scraper 8, and the material 9. attached to the inner wall of the casing 3 is removed.
9 can be peeled off.

If the small holes 13 become clogged with material under such usage conditions, the clogging can be easily removed by disassembling the casing 3 and exposing the die 1.

[Effects of the Invention] As described above, the granulation device according to the present invention has the effect of reducing manufacturing costs and improving durability and usage efficiency by simplifying the structure around the die. Further, by configuring the combination of dies and rollers in two or more stages, surface processing functions such as crushing and drying are provided, which has the effect of reducing material processing time and cost. Furthermore, this granulator can obtain high pressure through friction between the die and the rollers, so it can be applied to a wide range of uses including livestock waste, industrial waste, general waste, and other wastes.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a main part of an embodiment of a granulation device according to the present invention, FIG. 2 is a sectional view of the entire embodiment, and FIG. 3 is a perspective view of a conventional example. I...Dice 2...Roller 4...Pelletization chamber 5...Vertical shaft 9.9'...Material 11...Surface 12...Back surface 13...Small hole patent application Katsu Takao Patent attorney representing Shuta Suzuki Takashi Kobayashi Figure 1 0° to Figure 2

Claims (1)

[Claims] A disc-shaped die that has many small holes penetrating from the front surface to the back surface and is installed horizontally inside the granulation chamber, and a roller that rotates on its own axis while pressing against the surface of the die and revolves around the center of the die. A granulation device comprising: at least two combinations of dies and rollers arranged vertically in parallel, and a common vertical shaft passing through the center of each die for applying a revolving force to each roller. .