JPS6218213B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for mixing granular materials having variations in quality, particle size, etc.

Traditionally, when storing grains such as rice or wheat from a measuring tank or other container and filling them into packaging bags using a hopper, it is difficult to store grains such as rice, wheat, etc.
Large grains tend to be delayed in discharge, and to improve this, mixing using a rotary vane type stirrer may be considered, but for relatively fragile grains such as rice, Currently, it is unavoidable that packaging bags have uneven quality, which is unavoidable due to the risk of quality degradation due to cracking or chafing, and the development of a uniform mixing device. is eagerly awaited.

This invention is a mixing device that satisfies such social demands, and it is a mixing device that is fragile and easily breaks like rice.
This is a device that allows even granular materials to be mixed uniformly without causing any risk of breakage or cracking, and without causing any rubbing, even if the granular materials are likely to cause abrasion and release sugar. be.

In this invention, at least two tanks are hierarchically divided into several compartments by several vertical and parallel partition plates, and the directions of the partition plates of the tanks that are in contact with each other are mutually aligned when viewed from the plane. They are perpendicular to each other, and the entire bottom surface of each tank is almost horizontal, and the gates are movable within a range of ±45° with respect to the direction of the partition plate of each corresponding tank. The directions of movement of the gates of the tanks are approximately perpendicular to each other, and the open edge of each gate is approximately 80° to 45° when the gate is moved when viewed in plan with respect to the partition plate of the corresponding tank. The upper tank is vertically separated from the next lower tank by the gates of the upper tank, and each gate is used to charge the granular material into the corresponding tank. This granular material mixing device is characterized in that it is equipped with a sequence control device that sequentially operates the upper gate so that the granular material is closed before the granule is completely charged and opened after the granular material is completely charged.

In addition, in another invention, at least two tanks are hierarchically partitioned into several sections by several vertical and parallel partition plates, and the partition plates of vertically adjacent tanks are arranged in a plane. The gates are arranged perpendicularly to each other when viewed from above, and the entire bottom surface of each tank is substantially horizontal, and the gates are movable within a range of ±45° with respect to the direction of the partition plate of each corresponding tank, and The directions of movement of the gates of vertically adjacent tanks are substantially perpendicular to each other, and the open edge of each gate is approximately parallel to the partition plate of the corresponding tank when the gate is moved, when viewed in a plane.
It is installed at an angle of 80° to 45°, and the upper and lower tank gates separate the upper and lower tanks from each other, and each gate connects the corresponding tank. A sequence control device is provided that operates the upper gate in sequence so that the gate closes before the granular material is introduced and opens after the granular material is completely introduced. A hopper is provided to receive the hopper, and a hollow cone or cylinder whose upper end is closed and whose lower end is open is movably inserted into the discharge hole of the hopper. A granular material mixing device characterized in that the upper part of the cylindrical body reaches the upper part of the hopper, and the peripheral wall of the conical or cylindrical body is provided with holes or slits for discharging the granular material over almost the entire length. It is.

The device of the invention will now be described on the basis of a representative embodiment shown in the drawings.

Embodiment 10 of the first invention is a mixing device (see FIG. 1) of the present invention, in which a second tank 11 of the same shape and volume is provided, and a second tank 12 is provided below the second tank 11. Inside each tank 11, 12 are several vertical and parallel partition plates 1.
3 and 14, each section is divided into several sections, and these several partition plates 13 and 1
4 are orthogonal to each other when viewed from above, and the first tank 1
The bottoms of the first and second tanks 12 are respectively formed by gates 15 and 16 that move approximately horizontally, and in the embodiment shown in FIGS. 2 to 7, the bottoms of the respective tanks 11 , 12 partition plates 1
It is connected to reciprocating mechanisms such as air cylinder devices 19 and 20 so that it can move in directions 3 and 14 and reciprocate from a closed state to a fully open state. The reciprocating mechanism is not limited to the example shown in the figure, and a cam, lever, hydraulic mechanism, etc. may also be used. The open edge 17 of each of the aforementioned gates 15, 16,
18 is inclined at an angle R=80 to 45 degrees with respect to its direction of movement.

The moving directions of the gate 15 of the first tank 11 and the gate 16 of the second tank 12 are perpendicular to each other.
is closed, and with the gate of the second tank 12 closed, the gate 15 of the first tank 11 is opened, and after the entire amount of particulate matter A in the first tank 11 falls into the second tank 12, the gate 16 of the second tank is closed. is opened, the gate 15 of the first tank 11 is closed, and a sequence control device B is provided which controls the operation so as to repeat this operation.

The operation of the device of this invention will now be explained.

First, completely close the gate 15 of the first tank 11,
The granules A are put into each compartment of the first tank 11.

Next, before a predetermined amount of granular material is completely introduced into the first tank 11, the gate 16 of the second tank 12 is closed, and a preset amount of granular material A is introduced (supplied) into the first tank 11. (Usually, the first tank is used as the measuring container of the measuring device), the charging is stopped, and the gate 15 is opened. By retracting the gate 15, its open edge 17 becomes as shown in FIG. As shown by the chain lines, the small compartments 21a, 21b, 21c, .
Due to the inclination angle R, 21b, 21c, etc. are opened with a certain time difference, and finally from 21a to 21
b, 21c, . . . , it is fully opened, and all the particulate matter A in the first tank 11 falls into the second tank 12.

The moving speed of the gate 15 at this time varies depending on the particle size shape, specific gravity, etc. of the granules A, but the collapse inclination angle θ ₁ when the granules A in the first tank 11 collapse from the edge is about 5 to 20 degrees. shall be.

Next, the gate 16 of the second tank 12 is
Open in the same way as 5. This moving speed is purposefully selected and determined to be an arbitrary angle from the moving speed of the gate 15 of the first tank to the granular natural collapse angle _θ2 . The first place the gate 16 of the second tank 12 opens after retracting is such that the gate 16 opens from one end of the small compartment 22a of the second tank 12 located directly below the right end of the small compartment 21a in FIG. The inclination angle R is determined (see Figure 3). This second tank 1
While the particulate matter A in 2 is falling, gate 1
5 is closed, and the next granular material is thrown (supplied) into the first tank 11.

Repeat this operation below.

In the apparatus of the embodiment described above, first, the first
When the gate 15 starts to open, the particulate matter accumulated in each of the small compartments 21a, 21b...
7 is inclined at an angle R, that is, 80° to 45°, so that the endmost small compartment 21a among several small compartments
It opens from one end, and first, the particulate matter A in this part falls onto the gate 16 of the second tank 12 and spreads laterally, and in order to sequentially open into the small compartments 21b, 21c, etc., it is opened vertically in the first tank. In the second tank, what was previously divided into two vertical layers becomes an inclined upper and lower layer (see Fig. 4). Also, if you look inside each compartment in the first tank 11,
Even at a collapse angle of θ ₁ , when the granules fall down from the edge, the granules located above and below fall while mixing, so the granules that fall and accumulate in the second tank are in a state where the upper and lower sides are mixed.

Therefore, since the gate 16 of the second tank 12 is opened perpendicularly to the gate 15 of the first tank, the same mixing effect as when the first tank falls is produced by mixing in a 90° different direction when viewed from the plane. , more uniform mixing is obtained.

Therefore, the granular material A input (supplied) into the first tank
Even if particles with different particle sizes, specific gravity, and sizes are unevenly distributed depending on the top and bottom and location, the granules falling from the second tank 12 have the effect of being mixed and discharged almost uniformly, especially when discharging. A uniform mixed state is maintained from the initial stage to the latter stage.

If the movement directions of the gates 15 and 16 are parallel to the partition plates 13 and 14 of the corresponding tanks, and the open edges 17 and 18 are inclined at an angle of 80° to 45° with respect to the movement direction, the structure of the device becomes easy.

If the moving direction of the gate is inclined at an angle of 20 to 50 degrees with respect to the direction of the partition plate, as shown in Figure 8, the opening edge does not need to be inclined, and the gate has a strong structure. becomes.

In an embodiment in which each gate is provided for reciprocating rotational movement around a vertical axis as shown in FIG. 9, the movement is smooth.

In a structure in which each gate rotates reciprocally around a horizontal axis, the movement of each gate is rotationally supported by the horizontal axis, so that the movement is smooth.

Embodiment of the second invention In the embodiment shown in FIGS. 10 to 16, a hopper 30 is provided at the bottom of the apparatus of the first invention, and this discharge port 31 is closed at the upper end. , a cylindrical body 32 with an open bottom end is loosely fitted so as to be rotatable or movable up and down, the upper end 33 of the cylindrical body 32 reaches the top of the hopper, and the cylindrical body 32 is rotatable relative to the discharge port 31. A large number of granule discharge holes 34 are bored in the cylindrical peripheral wall, and the diameter of the holes 34 is about 5 times or larger than the maximum diameter of the granules. The lower end of this cylindrical body 32 has a thrust bearing 36 attached to the machine frame 35, for example.
A ring gear 37 is fixed to the outer periphery of the cylindrical body 32, and a pinion 39 rotates by a variable speed motor 38 supported on the machine frame 35. It is rotatably installed. The cylindrical body 32 and the discharge port 31 of the hopper 30 are rotatably fitted to each other.
As shown in FIG. 1, a gap 40 may be provided to allow the particulate matter A to pass through. Alternatively, the cylindrical body 32 may be moved up and down, vibrated up and down, or rotated up and down by a reciprocating mechanism 41, as shown in FIG. 12, instead of rotating.

The operation of the second invention constructed as described above will be explained below.The granules A falling from the apparatus of the first invention fall into the hopper 30, and almost It accumulates up to its upper part, and a part of it is discharged to the outside from the lower end of the cylinder 32 through several discharge holes 34 provided in the cylinder 32.

However, in general, particle friction increases due to the pressure of the accumulated particles A, and even if the size of each discharge hole 34 is sufficiently larger than the particle A, the cylindrical body 3
As long as 2 remains stationary, it will hardly fall.

Therefore, when the cylindrical body 32 is reciprocated or rotated by a motor 38 or a reciprocating machine 41 that reciprocates by the motor 38, the cylindrical body 32
When the friction between the particles of the granules A around 2 is broken, they enter the cylindrical body 32 through the respective discharge holes 34 and are discharged from the open lower end thereof.

In this second invention, which operates as described above, the particulate matter that is mixed, falls into the hopper 30, and accumulates in the hopper 30 in the device of the first invention is removed over time. Particulate matter that falls first into the hopper 30 accumulates in the lower layer, and particles that fall later accumulate in the upper layer.However, since the discharge hole 34 of the cylindrical body 32 is located along the entire length, The materials enter the cylindrical body 32 from the lower discharge hole 34, and the upper layer materials enter the cylinder 32 from the upper discharge hole 34, mix and fall. Therefore, particles that fall back and forth in time have the effect of being mixed, and the particulate matter A is also introduced into the cylinder 32 from the discharge holes 34 extending around the entire circumference of the cylinder 32. Even if there is non-uniformity, it has the effect of being sufficiently mixed and being discharged with a uniform mixing ratio.

When the peripheral speed of the cylindrical body 32 is moved to about 3 to 50 cm/sec, good discharge is generally achieved when the granular material is rice. When this moving speed is increased, the discharge amount increases. Therefore, the discharge amount is controlled by this moving speed. If the moving circumference is too large, the rice may crack or sag, leading to a decrease in quality, so the moving speed should be within a range that does not cause such problems.

Rotate the cylindrical body 32 as described above to open each hole 3.
The number, shape, and size of the discharge holes 34 are determined so that the total inflow amount of granules introduced into the cylindrical body 32 from 4 is not greater than the total inflow amount discharged from the lower open end of the cylindrical body 32. .

In this invention, instead of the cylindrical body 32, the 14th
Even if it is a tapered cylindrical body 32b as shown in the figure, or a hollow conical body 32c as shown in FIG.
However, the shape of the hole 34 may also be a slit-like hole 34a as shown in FIG. 13.

As shown in FIG. 16, a baffle plate 42 may be further provided in the hopper 30 to create an imbalance in the flow time and to achieve better temporal mixing. Particulate matter A on the baffle plate 42
The shape of the baffle plate 42 is limited, such as a hopper-like shape as shown in FIG. 16, a screw-like shape, or a discontinuous plate protruding centripetally toward the center. There isn't.

The reciprocating mechanism 41 for the cylindrical body 32 to the hollow cone body 32b is not limited to the mechanical mechanism shown in the drawings, but may also be an electromagnetic, pneumatic, hydraulic type, or a combination thereof.

As described above, the apparatus of the present invention is suitable for mixing granular materials having different specific gravity, size, and shape, and has the effect of uniformly mixing these. It is especially suitable for mixing feed, mixing rice from different origins, etc.

[Brief explanation of the drawing]

The figure shows something related to this invention,
FIG. 1 is a partially cutaway perspective view showing the principle of the device of the first invention, FIG. 2 is a cross-sectional plan view of the first tank section, FIG. 3 is a cross-sectional plan view of the second tank section, and FIG. The figure is a vertical side view, Figure 5 is a vertical front view, Figure 6 is a vertical front view with granules introduced into the second tank, and Figure 7 is a view of granules falling from the second tank. 8 is a cross-sectional plan view of a tank showing another embodiment; FIG. 9 is a cross-sectional plan view of a tank showing yet another embodiment; FIG. 10 is a device of the second invention. FIG. 11 is a longitudinal sectional side view of a typical embodiment of the second invention, and FIG. 11 is a partially omitted longitudinal sectional front view showing another embodiment of the second invention.
2 is a partially omitted vertical sectional front view showing still another embodiment, FIGS. 13, 14, and 15 are front views showing a hollow cone or cylindrical embodiment, and FIG. 16 is a partially omitted longitudinal front view showing another embodiment. It is a partially omitted vertical sectional front view showing still another embodiment of the second invention. Codes in the figure: 10...mixing device, A...granular material,
11...First tank, B...Sequence control device, 1
2...Second tank, θ ₁ ...Collapse angle, 13,14
...Partition plate, θ ₂ ...Natural collapse angle, 15,1
6... Gate, 17, 18... Open edge, 19,
20... Air cylinder device, 21a to 21d...
... Small compartment, 30 ... Hopper, 31 ... Discharge port, 32 ... Cylindrical body, 33 ... Upper end, 34 ... Discharge hole, 35 ... Machine frame, 36 ... Thrust bearing, 37 ... Annular gear, 38...variable speed motor,
39...Pinion, 40...Gap, 41...Reciprocating mechanism, 42...Baffle plate, 43...Through hole.

Claims (1)

[Claims] 1. At least two tanks partitioned into several compartments by several vertical and parallel partition plates are provided in a hierarchical manner, and the direction of the partition plates of vertically adjacent tanks is a plane. The gates are arranged perpendicularly to each other when viewed from above, and the entire bottom surface of each tank is substantially horizontal, and the gates are movable within a range of ±45° with respect to the direction of the partition plate of each corresponding tank, and The directions of movement of the gates of vertically adjacent tanks are substantially orthogonal to each other, and the open edge of each gate is approximately 80 degrees in the direction of movement of the gates when viewed from the plane with respect to the partition plate of the corresponding tank. It is installed at an angle of 45° to 45°, and the gate of the tank at the upper position vertically partitions the tank from the tank at the next lower position, and each gate is used to prevent particulate matter from entering the corresponding tank. A granule mixing device characterized in that it is provided with a sequence control device that sequentially operates from an upper gate so that it closes before being charged and opens after completely being charged. 2. Each gate shall be parallel to the partition plate of the corresponding tank when viewed in its direction of movement, and the direction of its open edge shall be at an angle of 80° to said partition plate when viewed in the same plane.
The granule mixing device according to claim 1, characterized in that it is inclined at 45°. 3. The granular material mixing device according to claim 1, wherein the moving direction of each gate is inclined at an angle of 20° to 45° with respect to the partition plate of the corresponding tank when viewed in a plane. 4. The granular material mixing device according to claim 1, wherein each gate is provided so as to reciprocate and rotate around a vertical axis provided outside each tank. 5. The granular material mixing device according to claim 1, wherein each gate is provided so as to rotate reciprocatingly around a horizontal plane. 6 At least two tanks partitioned into several compartments by several vertical and parallel partition plates are arranged in a hierarchical manner, and the directions of the partition plates of vertically adjacent tanks are mutually orthogonal when viewed from above. The entire bottom surface of each tank is almost horizontal, and there is a gate that moves within a range of ±45° with respect to the direction of the partition plate of each corresponding tank. The directions of movement of the gates are substantially perpendicular to each other, and the open edge of each gate is approximately 80° to 45° in the direction of movement of the gate when viewed from the plane with respect to the partition plate of the corresponding tank.
゜It is installed at an angle, and the gate of the tank at the upper position vertically partitions the tank from the tank at the next lower position, and each gate allows granular material to be thrown into the corresponding tank. A sequence control device is provided to operate the upper gate in sequence so that the tank closes at the beginning and opens after the tank is completely loaded, and a hopper is installed at the bottom of the lowest tank to receive the granules discharged from the tank. A hollow cone or cylinder whose upper end is closed and whose lower end is open is movably inserted into the discharge hole of the hopper, and the upper part of the cone or cylinder is inserted into the discharge hole of the hopper. 1. A granular material mixing device, characterized in that the conical or cylindrical body has holes or slits for discharging the granular material over substantially the entire length in the peripheral wall of the conical or cylindrical body.