JPS6013744B2 - Powder processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder processing apparatus, more specifically, vibrates a cylindrical body so that the powder can move through a plurality of powder channels formed in the cylindrical body in a kind of floating and rotating state. Powder processing that efficiently performs processes such as drying, cooling, and various reactions by flowing processing gas directly onto the powder into the powder flow path as it flows through the powder. Regarding equipment.

BACKGROUND OF THE INVENTION Powder processing equipment using a vibration method is widely used in factories that manufacture powdered pharmaceuticals, chemical products, and the like.

This type of processing equipment vibrates a container supported by an elastic body such as a spring using a vibration source such as an eccentric weight, and the powder in the container is brought into a kind of floating rotation state by this vibration. In this system, a heat medium is circulated through a jacket surrounding the container to perform drying, cooling, and various other reactions, and the present inventor has already provided the basic device (patented). Law No. 1046826). However, in such conventional devices, the powder flows in one direction only in the so-called one-pass method in the aforementioned container built into the device, and the heat transfer medium is directly effective to the powder in the container. It only acts on the peripheral wall surface of the container in the area where the powder comes into contact. When a roughly circular rotational motion is applied to the powder by normal vibration, the behavior of the powder tends to draw the same D circle, but as the throughput increases, the diameter of the container increases. When the thickness of the powder layer inside increases and reaches a certain level, the influence of the peripheral wall of the container on the powder in the center decreases, and as a result, treatments such as drying, cooling, and various other reactions become ineffective. It has the disadvantage of being more efficient. The present invention provides an improved powder processing device that eliminates the above-mentioned conventional drawbacks, and its purpose is to form a plurality of powder flow paths within a single cylinder provided with a vibration generation source. Then, the processing gas is diluted so as to flow directly to the powder that is in a floating and rotating state in the powder flow path, and the powder flow path is controlled while the processing gas has a direct influence on the powder. The purpose of this invention is to make the layer height of the powder relatively low in order to improve the processing efficiency of the powder.

Hereinafter, the configuration of the present invention will be explained in detail based on the drawings.

FIG. 1 is a side (partially cross-sectional) view illustrating a conventional processing apparatus, and FIG. 2 is an enlarged vertical cross-sectional schematic view showing the inside of a cylindrical container in the processing apparatus of FIG. The processing device 11 includes a powder inlet 4 in a substantially horizontally installed long-body cylindrical container 31 with covers 21a and 21b fixed to flanges on both sides by screws or the like.
1a, an outlet 41b, and an exhaust port 41c for detecting steam generated from the powder, a jacket 31a for flowing a heat medium for heating or cooling the powder is provided around it, and a vibration generation source 31b is provided. The cylindrical container 31 is supported by springs 51a and 51b, which are elastic bodies, and while the cylindrical container 31 is vibrated by a vibration source 31b, a heat medium is caused to flow through the jacket 31a, and the inlet 41a
Powder A, which is continuously introduced from the cylindrical container 31, is placed in a kind of floating rotation state and subjected to processes such as drying, cooling, and various other reactions, and the processed powder is obtained from the outlet 41b. However, such conventional devices have the drawbacks mentioned above.

FIG. 3 is a side (partially cross-sectional) view showing one embodiment of the present invention;
FIG. 4 is an enlarged schematic vertical cross-sectional view showing the inside of the cylinder in the embodiment of FIG. 3. FIG.

The processing device 12 according to the present invention includes flexible joints 22a, 2 with hoods on both sides of a cylinder 32 installed substantially horizontally.
An inlet 32a and an outlet 32b of the processing gas are connected through the cylinder 32, and four powder channels 6 are provided in the cylinder 32.
2a to 62d are formed, and inlets 42a to 42d and outlets 43a to 43d of powder A2 are connected to each of these powder flow paths, and a cylinder 32 equipped with a vibration generation source 32c are supported by springs 52a and 52b which are elastic bodies, and the cylindrical body 32 is connected to the vibration generating source 32c.
While vibrating with
Powder A2, which is continuously introduced from d, is in a kind of floating rotation state through each powder flow path and is swept away according to the amount of input, while the powder is subjected to drying, cooling, and various other reactions. The processed powder is obtained from the outlets 43a to 43d. FIG. 5 is a side (partially sectional) view showing another embodiment of the present invention, FIG. 6 is an enlarged vertical cross-sectional schematic view showing the inside of the cylinder in the embodiment of FIG. 5, and FIG. FIG. 6 is a partially enlarged perspective view showing the powder flow path in the embodiment of FIG. 5; The embodiment shown in Fig. 3 is a case where the powder channels are simply formed in parallel without being connected to each other, but the embodiments shown in Figs. The powder flow paths are connected at their ends, and the powder is configured to flow sequentially through each powder flow path in opposite directions. That is, in the processing apparatus 13 according to the present invention, an inlet 33a and an outlet 33b of the processing gas are connected to both sides of the cylinder 33 via hooded flexible joints 23a, 23b, and powder is contained in the cylinder 33. A3 flows continuously in opposite directions 4
Powder flow paths 63a to 63d are formed, and powder flow paths 63a to 63d are formed.
A powder inlet 44a is connected to the powder flow path 63d, and a powder outlet 44b is connected to the powder flow path 63d.
The cylinder 33 equipped with c is supported by springs 53a and 53b which are elastic bodies.
3 is vibrated by a vibration source 33c, while flowing processing gas into each powder flow path from the inlet 33a to the outlet 33b,
Powder A3, which is continuously introduced from the inlet 44a, enters each powder flow path in a kind of floating rotation state and is sequentially swept away in opposite directions according to the amount of input, while the powder A3 undergoes drying, cooling, and other various processes. After the treatment, the powder is sent to outlet 4.
4b. The embodiment shown in FIG. 3 is almost the same except for some parts such as communication channels and weir plates, but in the case of the embodiment shown in FIGS. 5 to 7, the powder flow channels 63a, 63b,
63c is formed from gutter-like bodies 73a, 73b, and 73c with semicircular cross sections fixed to the inner peripheral surface of the cylinder 33, and the powder flow path 63d is formed from the inner peripheral surface of the cylinder 33 itself. , Powder A3 overflow prevention walls 83a to 83h are attached to both ends of each of these powder channels, and weir plates 93a to 93d are installed at the end of each powder channel in the flow direction of powder A3. A weir plate 93a and an overflow prevention wall 8 are provided between each powder flow path so that the powder A3 continuously flows in opposite directions.
3b, communication paths 103a to 103c are established from the parts defined by the weir plate 93b and the overflow prevention wall 83d, and the areas partitioned by the weir plate 93c and the overflow prevention wall 83f to the next powder flow path.

Therefore, the powder A3 of the example shown in FIGS. 5 to 7
The push flow is from the inlet 44a to the powder flow path 63a to the weir plate 93.
a → communication path 103a → powder flow path 63b → weir plate 93b → communication path 103b → powder flow path 63c → weir plate 93c → communication path 1
The order is 03c→powder flow path 63d→dam plate 93d→outlet 44b. Figures 8 and 9 refer to Figures 4 and 6.
Corresponding to the figure, it is a vertical cross-sectional enlarged schematic view showing the inside of a cylinder in still other embodiments of the present invention.

In each case, seven powder channels each having a substantially V-shaped cross section are formed in the case of FIG. 8, and nine in the case of FIG. 9. In these other examples as well, the flow of powders A4 and A5 is as follows:
This can be done in the same way as in the embodiment shown in FIG. 3 or FIG. 5 described above. The present invention relates to the shape of the cylindrical body, the shape of the powder flow path formed in the cylindrical body, the means for fixing the gutter-like body forming the powder flow path, and furthermore, the flow means for processing gas, etc. However, the present invention is not limited to the illustrated embodiment; for example, the powder flow path may be formed into a U-shaped cross section using wedge wires, wire mesh, etc., and if necessary, each powder flow path may be formed into a double structure. It is also possible to circulate a heat medium that indirectly heats the external powder inside the cylinder, or to attach a jacket around the outer circumference of the cylinder that allows the circulation of the heat medium, but the shape of the powder flow path is different from that of the powder. It is preferable to have a curved or oblique shape that does not make floating rotation difficult.

According to the present invention described above, it is possible to form a plurality of powder channels in one cylinder, and to directly exert the influence of the processing gas on the powder in the powder channels.

Moreover, the direction of vibration of the cylinder in the present invention is not an oblique direction that provides a driving force for moving powder in conventional vibrating conveyors, etc., but is mostly only in a substantially circular radial direction, which prevents the powder from flowing. Since the powder in the channel is fluidized in a kind of floating rotation state due to the vibration, the movement of the powder from the inlet to the outlet can be easily determined by the amount of powder input from the inlet. . Therefore, by forming and using the necessary number of powder channels that provide the most appropriate powder layer height depending on the properties and amount of powder to be processed, it is possible to incorporate a single large-diameter container. However, compared to the conventional apparatus described above, it is possible to dry, cool, and perform various reactions on powder much more efficiently.

[Brief Description of the Drawings] Fig. 1 is a side (partially sectional) view illustrating a conventional processing device; 3 is a side (partially cross-sectional) view showing one embodiment of the present invention, FIG. 4 is an enlarged vertical cross-sectional schematic view showing the inside of the cylinder in the embodiment of FIG. 3, and FIG. A side view (partially cross-sectional) showing one embodiment, FIG. 6 is an enlarged vertical cross-sectional schematic view showing the inside of the cylinder in the embodiment of FIG. 5, and FIG. 7 is a view of the powder in the embodiment of FIG. A partially enlarged perspective view showing a flow path, and FIGS. 8 and 9 are enlarged vertical cross-sectional schematic views showing the inside of a cylinder in still other embodiments of the present invention. 11, 12, 13...processing device, 21a, 21
b... Cover, 22a, 220, 23a, 23b... Flexible joint, 31... Cylindrical container, 31a...
Jacket, 31b, 32c, 33c... Vibration source, 32, 33... Cylindrical body, 32a, 33a
...Inlet of processing gas, 32b, 33b...
... Processing gas outlet, 41a, 42a to 42b, 4
4a...Powder inlet, 41b, 43a to 43d
, 44b...Powder outlet, 51a, 51b, 6
2a, 52b, 53a, 53b... Spring, 62a
~62d, 63a~63d...Powder flow path, 73
a~73c...Gutter-shaped body, 83a~83h...
...Overflow prevention wall, 93a-93c...Weir plate,
103a-103c...Connection route. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1. An inlet and an outlet for processing gas via flexible joints on both sides of a substantially horizontally installed cylinder supported by an elastic body such as a spring and equipped with one to several vibration sources. is connected to the cylindrical body, and a plurality of powder channels are formed in the cylinder body, with powder inlets and outlets connected as appropriate, and the processing gas is allowed to flow through the powder channels. Powder processing equipment consisting of 2. The powder processing apparatus according to claim 1, wherein the powder flow paths are connected so that the powder sequentially flows in opposite directions through the powder flow paths. 3. The powder processing apparatus according to claim 1 or 2, wherein the processing gas is an inert gas such as nitrogen gas. 4. A powder processing apparatus according to any one of claims 1 to 3, wherein the processing gas is a low-temperature gas.