JPH0639261A - Granular body mixing and transporting device - Google Patents

Abstract

PURPOSE:To provide a granular body mixing and transporting device capable of uniformly mixing and transporting the granular body with the generated spiral flow of air. CONSTITUTION:This granular body mixing and transporting device is provided with a spherical spiral flow chamber 10 having a tangential air inlet 12, a duct means passing through the center of the chamber 10 at right angles to the plane including the inlet 12 and a means 24 for introducing a granular body 22 to be treated into the chamber 10, and the duct means has an inlet 16 opened to the inside of the chamber 10 and an outlet 18 communicating with the outside of the chamber 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cyclone-type powder / granular material mixing and conveying device for conveying powder particles while mixing them.

[0002]

2. Description of the Related Art A powder vortex is placed on an air stream and moved in the axial direction, while pressurized air is introduced in the radial direction of the air vortex to generate a vortex flow to uniformly mix the granules. The powdery and granular material mixing and conveying device for transferring while moving is, for example, JP-A-63-154522 and JP-A-63-267.
It is known from No. 424 and the like. In these devices, an air flow containing powder particles is caused to flow in the axial direction of a tapered cylindrical tube, and pressurized air is introduced from a slit formed in the peripheral wall of the cylindrical tube.

[0003]

In this configuration, since there is a problem that the air flow becomes unstable or a back flow occurs, another cylindrical tube extending in the axial direction may be inserted in the cylindrical tube, The cross-sectional area of the inlet of the cylindrical tube can be adjusted. Therefore, the device becomes complicated.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a powder and granular material mixing and conveying device capable of generating a stable vortex of air and thereby conveying powder and granular materials while mixing them more uniformly. is there.

To achieve this object, the invention provides a spherical swirl chamber having a tangential air inlet and a conduit extending through the center of the swirl chamber at right angles to the plane containing said air inlet. Means and inlet means for introducing the granular material to be treated into the swirl chamber, the conduit means having an inlet opening into the swirl chamber and an outlet leading to the outside of the swirl chamber. Provided is a powder and granular material mixing and conveying device.

According to one feature of the invention, in a powder and granulate mixing and conveying device, the inlet of the conduit means is aligned with the inlet means.
Also, the conduit means is movable in the axial direction so that the distance between the inlet and the inlet means can be adjusted.

According to another feature of the present invention, in the powder and granular material mixing and conveying device, the conduit means has a double structure consisting of an inner conduit part and an outer conduit part, and the inner conduit part is opened into the swirl chamber. And an outlet communicating with the outside of the swirl chamber, the outer conduit portion forming an annular passage between the inner conduit portion,
This passage constitutes the inlet means, and is further characterized in that the inner conduit portion is movable in the axial direction thereof.

According to still another feature of the present invention, there is provided a powder and granular material mixing and conveying apparatus in which the conduit means has a dual structure conduit including an inner conduit part and an outer conduit part, and an inner end of the dual structure conduit. A second spherical swirl chamber surrounding the portion and a hemispherical shell surrounding the second spherical swirl chamber, the shell forming a hemispherical communication passage between the second spherical swirl chamber and the second spherical swirl chamber. The communication passage is in communication with a communication opening provided through the wall of the second spherical swirl chamber and in communication with a conduit section provided in the shell, which conduit section of the shell is aligned with the inlet means. And has an inlet opening to the swirl chamber.

[0009]

According to the above construction, the air flowing into the swirl chamber from the air inlet becomes a swirl more easily and easily than the conventional cylindrical pipe, and while swirling, the powder and granules are mixed in the conduit means. It moves and flows out of the swirl chamber.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, referring to FIG. 1, there is shown a first embodiment of a powder and granular material mixing and conveying apparatus of the present invention. The powder and granular material mixing and conveying apparatus includes a spherical swirl chamber 10. However, the swirl chamber comprises a tangential air inlet 12, as best seen in FIG.

A conduit 14 extends into the swirl chamber 10 at a right angle to the plane containing the air inlet 12 (ie, the plane of FIG. 2), the conduit 14 having an inlet 16 opening into the swirl chamber 10. , And an outlet 18 communicating with the outside of the swirl chamber 12. The conduit 14 is movable in the direction of its longitudinal axis, as indicated by the arrow 20 in FIG.

Aligned with the inlet 16 of the conduit 14, the swirl chamber 1
At 0, inlet means 24 for introducing the powdery or granular material 22 to be treated into the swirl chamber 10 is provided. The inlet means 24 is
A rotary valve 26 is provided to prevent backflow of the powder or granular material to be treated.

In operation, the air entering through the air inlet 12 swirls within the swirl chamber 10 as shown by the arrow toward the inlet 16 of the conduit 14 and into it. At this time, the powdery or granular material 22 to be treated supplied through the inlet means 24 is entrained in the vortex flow, and is mixed with the vortex flow through the conduit 14 to the outlet 18 of the conduit 14.
Be transported to.

Depending on the size and nature of the particles to be treated, the conduit 14 can be moved in its longitudinal direction to change the distance between its inlet 16 and inlet means 24.

FIG. 3 shows a second embodiment of the present invention. In this embodiment, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof is omitted.

The second embodiment has a double conduit structure 30,
This double conduit structure has an inner conduit part 32 having the same structure and function as the conduit 14 of the first embodiment, and this inner conduit part 3
And an outer conduit portion 34 that surrounds 2. An annular passage 36 is formed between the inner and outer conduit portions 32, 34, and an outer end portion 38 of the outer conduit portion 34 outside the swirl chamber 10 is formed.
Has spread and is adapted to receive the granular material 22 to be treated. An inner end 40 of the outer conduit 34 located within the swirl chamber 10 forms a material outlet 42 with the inner end of the inner conduit portion 32.

Also in the second embodiment, the inner conduit 32 is moved in the direction of its longitudinal axis so that it can be adjusted according to the granular material to be treated.

FIG. 4 shows a third embodiment of the present invention. In this embodiment as well, the same parts as those in the first and second embodiments are designated by the same reference numerals and the description thereof will be omitted. To do.

In the third embodiment, similar to the second embodiment, the double conduit structure 30 including the inner conduit portion 32 and the outer conduit portion 34 is provided. The end is surrounded by a second spherical swirl chamber 50. This second
The spherical swirl chamber 50 has a hemispherical shell 5 in the lower half thereof.
The shell 52 and the second spherical swirl chamber 5 are surrounded by 2.
A communication path 54 having a hemispherical shape is formed between the two and 0.

The shell 52 introduces into the swirl chamber a target granular material different from the target granular material 22 to be supplied into the second spherical swirl chamber 50 through the communication passage 36 of the double conduit structure 30. It has a conduit portion 58 which is aligned with the inlet means 24 (indicated by arrow 56) and which communicates with said hemispherical communication passage 54. Also, this hemispherical connecting passage 5
4 is a communication port 6 provided through the wall of the second spherical swirl chamber 50.
It is also connected to 0 and communicates with the inside of the second spherical swirl chamber 50.

In the third embodiment, the two types of powder particles 22 and 56 to be treated are conveyed while being mixed by the vortex flow twice, so that more uniform mixing can be achieved.

[0023]

According to the structure described above, a more stable vortex flow can be generated in the spherical vortex chamber as compared with the conventional structure using the cylindrical tube, and the backflow can be prevented with a simple structure. it can.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a first embodiment of a powder / granular material mixing and conveying apparatus of the present invention.

FIG. 2 is a horizontal cross-sectional view of the powdery- or granular-material mixing and conveying device shown in FIG. 1 taken along a direction perpendicular to the plane of FIG.

FIG. 3 is a vertical sectional view showing a second embodiment of the powder and granular material mixing and conveying device of the present invention.

FIG. 4 is a vertical sectional view showing a third embodiment of the powder and granular material mixing and conveying device of the present invention.

[Explanation of symbols]

 10 ... Vortex chamber 12 ... Air inlet 14 ... Conduit 16 ... Inlet 18 ... Outlet 22 ... To-be-processed powder / grain 24 ... Inlet means 26 ... Rotary valve 30 ... Double conduit structure 32 ... Inner conduit 34 ... Outer conduit 36 ... Annular passage 50 ... Second spherical swirl chamber 52 ... Shell 54 ... Hemispherical communication passage 58. ..Conduit parts

Claims (4)

[Claims] 1. A spherical vortex chamber having a tangential air inlet, conduit means extending through the center of the vortex chamber at right angles to the plane containing the air inlet, and powder to be treated into the vortex chamber. An inlet / outlet means for introducing particles, wherein the conduit means has an inlet opening into the swirl chamber and an outlet communicating with the outside of the swirl chamber. 2. The powder and granular material mixing and conveying apparatus according to claim 1, wherein the inlet of the conduit means is aligned with the inlet means, and the conduit means moves in the axial direction to move the inlet and the inlet. A powder / granule mixing / conveying device, characterized in that the distance between the powder and granules can be adjusted. 3. The powdery-particles mixing and conveying apparatus according to claim 1, wherein the conduit means has a double structure consisting of an inner conduit part and an outer conduit part, and the inner conduit part is an inlet opening into the swirl chamber. And an outlet communicating with the outside of the swirl chamber, and the outer conduit portion forms an annular passage between the inner conduit portion and
This passage constitutes the inlet means, and further, the inner conduit portion is configured to be movable in the axial direction thereof. 4. The powder and granular material mixing and conveying apparatus according to claim 1, wherein the conduit means surrounds a dual structure conduit consisting of an inner conduit part and an outer conduit part, and an inner end part of the dual structure conduit. A second spherical swirl chamber and a hemispherical shell surrounding the second spherical swirl chamber, the shell defining a hemispherical communication passage between the second spherical swirl chamber and the second spherical swirl chamber; A communication passage communicates with a communication port provided through the wall of the second spherical swirl chamber and communicates with a conduit portion of the shell, the conduit portion of the shell communicating with the inlet means. An apparatus for mixing and transporting powdery particles, characterized in that it has an inlet that is aligned and opens into the swirl chamber.