JPH0672993U - Granule disperser - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a powder / granular disperser having a simple structure that can disperse a powder / granular substance on a horizontal plane in a short time to an even desired thickness. A cone 2 is arranged with its tip 2a facing upward and its axis is vertical, and a small-diameter end 3a is fixed to the lower part of the cone having the same axis as the cone and goes downward. A diverging member 3 such as a spiral spring which spreads toward the end, and a rotatable cylindrical body 1 surrounding the conical body and the lateral outer periphery of the dispersing member and having a large-diameter end 3b of the dispersing member fixed.
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Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder / granular disperser for dispersing a powder / granular material to a uniform thickness on a horizontal surface.

[0002]

[Prior art]

 Conventionally, it is often necessary in various industrial fields to disperse powder or granules charged from the top on a flat surface with a uniform thickness. For example, when measuring the water content of a grain, the grain is first crushed and placed on a circular sample dish, then dried by heating to evaporate the moisture, and the% moisture is measured by the weight difference before and after heating. There is. At this time, if the cereal powder on the sample pan is evenly distributed, the drying time will be shortened. become longer. Therefore, it is necessary to disperse the cereal powder in the sample dish as evenly as possible.

Further, a granular material sorting apparatus is used for sorting granular materials such as wheat and rice and searching for impurities in the granular materials. This device, for example, irradiates the sorting granules that are continuously conveyed by a flat belt conveyor with light from above, receives the reflected light or emitted light from the granules, and converts it into an electrical signal according to the amount of light. However, it is configured to detect abnormal particles and automatically eliminate them. At this time, in order to improve the sorting performance, it is desirable that the thickness of the granular material on the belt conveyor is evenly distributed to a desired thickness for each product type. Also, when the granular material is put into the container, if the upper surface is uniform, the step of uniformizing the surface at the time of sealing is eliminated.

Conventionally, various means have been taken to disperse a powder or granule in a uniform thickness on a horizontal surface. For example, a container such as a sample dish or a belt conveyor or a carrier may be horizontally vibrated, an impact force may be applied from below, or the surface of the granules may be rubbed horizontally with a stick or a ruler to flatten it. There is a method. However, these conventional means have a drawback that they are cumbersome, require a lot of time, have a complicated structure and become large in size, and are inconvenient to be inserted in the middle of a series of flow operations.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of the above points, and provides a powder / granular disperser having a simple structure that can disperse a powder / granular substance on a horizontal plane in a short time to an even desired thickness. The purpose is to

[0006]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a conical body arranged with its tip up and its axis vertical and an upper end of a linear dispersion member that spreads toward the bottom of the conical body. It is characterized in that it is fixed and the lower end is fixed to a toroidal body which is driven to rotate, and the outer circumferences of these rotating bodies are surrounded. Further, the present invention is characterized in that the dispersion member is a spiral spring. Further, according to the present invention, the dispersion member comprises a plurality of wire rings of concentric circles having different diameters, which are arranged horizontally at a distance from each other, and a radial piece connecting the rings. Characterize.

[0007] The linear dispersion member has an effect that a slit is provided on the slope when the powder particles are dispersed, and rotation also assists the same operation. These two effects combine to achieve sufficient dispersion.

The cross-sectional shape of the linear dispersion member may be any shape, but a circular cross-section or an approximate shape thereof is preferable in order not to leave powder particles on the wire.

The structure of the linear dispersion member may be any shape, but if it is configured to spread downward on a spiral, a synergistic effect with rotation is good. If an elastic body made of a spring material is used as the material, the conical portion will vibrate appropriately and the dispersion effect will be positively affected. Also, a concentric combination may be used.

Any method may be used to drive the circular ring, but the spiral direction of the dispersion member may be such that the advancing direction of the spiral is upward. Further, the cylinder surrounding the outer circumference may be fixed or may be rotated synchronously, and has a function of preventing scattering of the dispersed powder and granules out of the system.

The dimension of the linear dispersion member may be appropriately determined, but the dispersion effect is good when the width and the interval of the linear dispersion member on the projection surface from the upper surface are substantially the same.

[0012]

[Action]

 The powder particles falling from above onto the rotating cone are evenly distributed around the cone by the cone. Next, the powder and granular material scattered on the rotating dispersion member is dispersed by each winding one after another on the winding below and inside and outside. In this way, the granular material is dispersed and deposited in a uniform thickness in the container provided directly below the distributor. Further, the dispersion performance such as the deposited thickness can be changed by adjusting the rotation speed of the dispersion member and the number of turns / pitch of the dispersion member according to the amount of powder or granules supplied to the disperser.

[0013]

【Example】

 The present invention will be described with reference to the drawings.

FIG. 1 is a vertical sectional view of a powder / granular disperser according to the present invention.

In the embodiment shown in FIG. 1, the dispersion member 3 is formed of a spiral spring. Inside the cylindrical body 1 whose axis is substantially vertical, the spiral spring 3 whose axis is the axis is fixed to the lower part of the cylindrical body 1 at its large-diameter end 3b, that is, the lower end. The spiral spring 3 is formed of, for example, a wire with a diameter of 4, and has a divergent spiral shape with the small diameter end 3a facing upward as shown in the figure. The larger the wire diameter of the spiral spring 3, the slower the rotation speed of the cylindrical body 1 may be. The conical body 2 is fixed to the small-diameter end 3a of the spiral spring 3, that is, the upper end, on the same axis as the axis of the spiral spring 3, with its tip 2a facing upward. The splaying slope of the spiral spring 3 is substantially continuous with the side slope of the cone 2 (FIG. 1). The tip 2a of the conical body 2 is attached below the upper edge of the cylindrical body 1 to prevent the powder particles from scattering outside the cylindrical body 1.

A roller bearing or a ball bearing 4 fitted between the frame body 10 for supporting the cylindrical body 1 and the outer surface of the cylindrical body 1 allows the cylindrical body 1 to rotate about its axis. It is supported. The ball bearing 4 is supported by a supporting member 7 fixed to the outer peripheral surface of the cylindrical body 1. A skirt ring 6 is attached to the lower portion of the outer periphery of the cylindrical body 1. At the time of work, a granular material container 15 such as a saucer is placed below the skirt ring 6 with a slight gap. A gear 5 is fixed to the outer peripheral surface of the cylindrical body 1, and the gear 5 meshes with a pinion 8 of a geared motor 9 installed on the frame body 10. Although the lower end of the dispersion member 3 is fixed to the cylindrical body 1 here, the cylindrical body 1 is fixed, and a driving annular body is separately provided to rotate only the dispersion member 3 inside the cylindrical body 1. Is also good.

The powder / particle disperser of the present invention having the above structure operates as follows.

First, the gear 5 engaged with the pinion 8 is rotated by the rotation of the geared motor 9, and the cylindrical body 1 is rotated about the vertical axis. The rotation direction of the cylindrical body 1 is usually selected in the direction in which the powdery granules rise. The powder particles are put into the cylindrical body 1 from above the conical body 2. The granules are scattered around the periphery by the cone 2. The sprinkled powder particles fall and collide with the rotating spiral spring 3, are scattered around the spiral spring 3, and the spiral spring 3 in the lower stage repeats the same action one after another. The granular material that has passed through the spiral spring 3 is dispersed and accumulated in a container 15 which is arranged under the cylindrical body 1 in close proximity to have a uniform thickness. The cylindrical body 1 prevents the powder particles from scattering to the outside.

2 (a) and 2 (b) are a front view and a plan view of another embodiment of the dispersing member used in the dispersing device of the present invention.

In this embodiment, the dispersion member 3 is composed of a plurality of concentric wire rings 13a, 13b, 13c, ... Which are horizontally arranged at a distance from each other, and a radial wire wire which connects these rings. It is composed of pieces 14, which are connected to each other. The diameters of the rings 13a, 13b, 13c, ... The radial pieces 14 are spread radially downward with the cone 2 as the center. As described with reference to the embodiment of FIG. 1, inside the cylindrical body 1 whose axis is substantially vertical, the ring-shaped dispersion member 3 whose axis is the axis is the large-diameter end 3b, that is, the lower end is a cylinder. It is fixed to the bottom of the body 1. The dispersion member 3 is formed of, for example, a wire having a diameter of 4, and has a shape of a flared incense stick with the small diameter end 3a facing upward as shown in the figure. The wire diameter of the dispersion member 3 is preferably thicker in terms of dispersion effect, and the thicker the wire diameter, the slower the rotation speed of the cylindrical body 1 may be. The conical body 2 is fixed to the small-diameter end portion 3a of the dispersion member 3, that is, the upper end, on the same axis as the axis line of the dispersion member 3, with its tip 2a facing upward. The slope of the diverging member 3 toward the end is substantially continuous with the slope of the side face of the cone 2 (FIG. 2a). Therefore, the dispersion member 3 has a structure and action similar to those of the spiral spring-shaped dispersion member 3 shown in the embodiment of FIG.

Experiment of use of disperser The following is the result of an experiment in which the disperser of the present invention shown in FIG. 1 was used to measure the water content of a wheat sample.

FIG. 3 is a cross-sectional view showing the dispersion state of the powder or granules in the tray, (a) shows the dispersion state when the powder or granule disperser of the present invention is used, and (b) shows it. Indicates the distribution status when is not used.

Granular wheat samples are ground, moistened and weighed. Next, the disperser of the present invention is used to place it on the tray 15. The state is shown in FIG. According to this, the powder particles 20 were dispersed in the saucer 15 in a substantially uniform thickness, and the average thickness h was 1.5 to 2.5. On the other hand, in the case where the disperser of the present invention is not used, as shown in FIG. 3 (b), powder particles 20 are piled up in the tray 15 and the maximum height H is 11.2-12. It was 5.

The pans on which the powder and granules 20 were placed were separately placed in an infrared dryer, the heating temperature in the dryer was similarly set to 130 ° C., and drying was performed, and the weight after drying was measured. Calculate the water content by the weight difference before and after drying. As a result, the water content of the powder and granules 20 dries to about 11. It took about 7 to 9 minutes in the case of FIG. 3 (a) and about 13 to 15 minutes in the case of FIG. 3 (b) to reach 7%.

From the results of this experiment, by using the powder / granular disperser of the present invention, the powder / granular material is dispersed in the pan in a substantially uniform thickness, so that the moisture measurement time can be significantly shortened. There was found.

[0026]

[Effect of device]

 As described above, according to the disperser of the present invention, the cone having the tip on top and the axis perpendicular to the cone, and the cone having the same axis as the cone have a small diameter at the bottom of the cone. A dispersion member, such as a spiral spring, whose ends are fixed and which expands toward the bottom, and a laterally outer periphery of the conical body and the dispersion member, and the lower end of the dispersion member are fixed and are rotatable. Since it has a cylindrical body, the granular material is evenly distributed and deposited on the horizontal surface to a substantially constant thickness. In addition, the size, thickness, and deposition time of the horizontal surface on which the particles are deposited are the rotation speed of the disperser, the size of the dispersing member, the number of stages and the number of windings, the pitch between the stages, and the particles to the disperser. It can be adjusted freely depending on the supply amount of, the size of the granules, etc.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a disperser of the present invention.

FIG. 2A is a front view of another embodiment of a dispersing member used in the dispersing device of the present invention, and FIG. 2B is a plan view of the dispersing device.

FIG. 3 is a cross-sectional view showing a dispersion state of powder particles in a saucer, (a) shows a dispersion state when the disperser of the present invention is used, and (b) shows a dispersion state when not used. Indicates.

[Explanation of symbols]

 1 Cylindrical Body 2 Cone Body 2a Tip 3 Dispersing Member 3a Small Diameter End 3b Large Diameter End 13a Ring 13b Ring 13c Ring 14 Radial Piece

Claims (3)

[Scope of utility model registration request] 1. A cone, which is arranged with its tip up and its axis vertical, and the upper end of a linear dispersion member, which widens toward the bottom of the cone, and whose lower end is rotationally driven. A powder / granular disperser characterized by being fixed to an annular body to be surrounded and surrounding the outer circumference of these rotating bodies. 2. The powder / granular disperser according to claim 1, wherein the dispersion member is a spiral spring. 3. The dispersion member is composed of a plurality of wire rings of concentric circles having different diameters which are horizontally arranged at a distance from each other and a radial piece connecting the rings. Item 1. A powder / granular disperser according to Item 1.