JPS607936B2 - Continuous mixing device for powder and granular materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous mixing device for granular materials, which accommodates different types of granular materials in individual hoppers and uniformly mixes the granular materials while flowing out from each hopper.

In a batch operation in which the required amount is charged into a mixer, if time is taken, the purpose of uniform mixing can be achieved and product variations can be prevented.

When enriching the nutrition of milled rice, it is necessary to mix the fortified rice in a constant ratio with the milled rice without any variation, and in order to improve the accuracy the most, it is ideal to mix by weight ratio. However, the cost of the device is high and it is not practical.

That is, if there is variation in the mixture of polished rice and fortified rice, if the daily required amount is extracted from this mixed fortified milled rice (mixed milled rice), there will naturally be variation in the intake of the prescribed nutritional components on a daily basis.

On the other hand, it is generally well known that milled rice requires nutritional fortification, so it is generally safe to simply mix fortified rice with milled rice, and even if there are variations in nutritional fortification in mixed milled rice as mentioned above, Since changes in the intake of nutritional components such as these do not immediately cause individuals to become aware of them, there is no one to pay close attention to them, and in general, there is no real way to check whether fortified rice is evenly mixed into polished rice. The current situation is that it is not strictly monitored and is left unattended.

Therefore, in the present invention, we focused on creating a homogeneous mixing device that is relatively inexpensive and highly practical even when mixing by volume ratio and continuous mixing method, and we have succeeded in creating such a device. It is.

That is, the apparatus of the present invention arranges hoppers that individually accommodate different types of powder and granules, connects them to the outlet at the bottom of one hopper, and passes through the inside of the other hopper, either as is or with an outlet opened there. Next, a first mixing transfer device for powder and granular material is provided, which has an open outlet for feeding the powder and granules into a cup-shaped mixer built into the hopper, and a cup-shaped mixer. is formed in the same cup shape as the conical peripheral wall formed below the other hopper, has an outlet at its bottom end, and has a conical mountain-shaped collision piece between this outlet and the outlet of the same hopper. This is a continuous mixing device for powder and granular materials, in which a second mixing transfer device and a circular collision piece are further provided below the outlet of the hopper, if necessary.

To further explain this device, the heterogeneous granular material uses polished rice and fortified rice as a particularly effective mixture, but the fortified rice may be artificial rice grains made from powder.

In addition to milled rice, it can be used for a wide range of precise mixing of millet feed, granular fertilizer, etc. Milled rice and fortified rice will be described below as representative examples of different types of granular materials. Next, the first and second mixing and transferring devices 5 and 12 have the function of transporting different types of powder and granules in a fixed amount, and the first mixing and transferring device has the function of transferring different types of powder and granules in a fixed amount. In other words, there are two cases in which the strengthened rice is directly fed into the cup-shaped mixer 8 in the other hopper, and a case in which the rice is fed into the cup-shaped mixer 8 in the other hopper.
In some cases, the fortified rice and polished rice are mixed in the first stage and fed into the cup-shaped mixer 8, and if the first mixing is performed and then transferred to the second mixing in the cup-shaped mixer 8, the mixing is more thorough than in the former case. <
In this case, the second mixing transfer device 12 and the conical collision edge 15 can be omitted.

Further, the inlet 18 for the polished rice may be closed by a valve 180' that can be opened and closed. Subsequently, the outlet 7 of the first mixing transfer device 5 and the outlet 9 of the cup-shaped mixer 8 below are concentric, and the conical mountain-shaped collision piece below is also rubbed D'. Good.

By configuring the device of the present invention in this way, the power source can be reduced by utilizing the natural energy generated by falling powder and granules.
This allowed for highly accurate mixing. That is, between the outlet 7 and the outlet 9, strengthened rice or mixed polished rice, which is a mixture of strengthened rice and polished rice, falls from the outlet 7.

The mixed milled rice (also strengthened rice) flows in collectively from the surrounding area around the outlet 7, and falls from the outlet 8 while being mixed. At this point, secondary mixing has already occurred, and the falling secondary mixed rice collides with the conical mountain-shaped collision pieces and scatters around with collision energy.
The lower part of the milled rice hopper 1 has a conical shape, and from the circumferential gap formed between its peripheral wall and the peripheral wall of the cup-shaped mixer 8, polished rice flows down toward the outlet 11 of the hopper, where the polished rice flows down. The mixed milled rice having the above-mentioned collision energy is mixed while colliding, and comes down the outflow row 1 while being aggregated. That is, the fortified rice and polished rice are mixed using aggregation and dispersion mechanisms and using falling energy. 1st
When the mixing and transferring device does not have a milled rice inlet or it is closed, the second mixing and transferring device 12 especially needs to be chained for mixing and transferring. Of course, it can also be used solely for transportation reasons. More importantly, if the first and second mixing transfer devices are linked together, even if the flow rate is adjusted by increasing or decreasing the rotation speed of the second mixing transfer device, the mixing will always be constant at a speed corresponding to the adjusted flow rate. It is possible to deliver products with mixed ratios. Further, the first and second mixing transfer devices may be screw compares or other commonly used devices,
It may be of the same species or a transplanted species.

In this case, the transfer amount ratio of the first and second devices should be equal to or greater than 20.
When the sound is set between 1 and 30, it is effective to prevent the granular material passing through the secondary, tertiary, etc. mixing devices provided between the first and second devices from stagnation or clogging on the way. Furthermore, the first
When the mixed transfer device has a milled rice inlet, the first mixed transfer device is divided into two parts at the part where the strengthened rice outlet and the polished rice inlet are located, and the cross-sectional diameter of the transfer device is limited to a certain ratio. Mixing can be done by accurately distinguishing the mixing ratio.

Next, to specifically illustrate the apparatus of the present invention with drawings, and to explain FIG. 1 assuming that the raw materials of the different types of powder are polished rice and fortified rice, a rice milled hopper and a fortified rice hopper 2 are arranged in parallel, and the fortified rice hopper is It connects with the outlet 41 at the bottom of the rice milling hopper and extends into the lower part of the rice milling hopper, and penetrates the top or side wall of the cup-shaped mixer 8, which has a conical funnel structure and is built into the hopper. A first mixing and transporting device 5 is provided inside which mixes and transports different types of powder and granular material with a delivery port 7 connected thereto,
On the other hand, the cup-shaped mixer 8 is formed into a cup-shape concentric with the lower conical shape of the hopper 1 containing it, and between this outlet 9 and the outlet 11 of the hopper is a conical mountain-shaped collision piece (or a separation piece). 10 is provided to form a continuous powder and granule mixing device.

In this case, a mixing transfer device 12 connected to the rice milling hopper outlet 11 may be provided, and a conical mountain-shaped collision piece 15 may be provided at the bottom of the terminal outlet 14, and the surfaces of the collision pieces 10 and 15 may have spiral or other shapes. The baffle plate may be formed by providing unevenness. The first and second mixing and transferring devices 6 and 12, which mix and transfer polished rice and fortified rice, are screw comparators, and are shown as the same type of rice.

First device 25-60kg/n. The second devices 5 to 12/n. When the transfer magnification of the second device and the first device is increased, the combination of the cup-shaped mixer 8 and the conical mountain-shaped colliding piece 10 works well together as described above, and the aggregation and dispersion of powder and granules occur well, resulting in mixing. It is performed extremely well and does not cause the eye-talking phenomenon. Furthermore, if the surface of the conical mountain-shaped colliding piece acts as a baffle plate, it will further aid in dispersion and improve mixing. In this case, if the baffle plate is rotatably attached manually or by power, clogging and mixing can be further facilitated. Further, the mixing transfer devices 5 and 1
2, when the power source is rotated in conjunction with the continuously variable speed motor 16, the number of rotations can be changed and stopped as described above, thereby making it possible to adjust the production amount. Next, the rice milling hopper is provided with rice milling upper and lower limit level meters (sensors) 31 and 30, and the flow rate of the milled rice is adjusted to a constant level.

FIG. 2 shows a partial view of the inlet 18 of the milled rice hopper 1 and the outlet 41 of the strengthened rice hopper 2.

Inlet 18 of the milled rice hopper introduced into the mixing transfer device 5
and the outlet 41 of the strengthened rice hopper have 40 and 1 liters, respectively.
80 shutters that can be opened and closed automatically or manually are shown. In addition, the first mixing transfer device is divided into parts 51 and 501 where the milled rice inflow row 8 and the strengthened rice outflow port 41 are located, and the cross-sectional diameters of both parts 51 and 50 are set at a fixed ratio. .

Next, to explain the operation, the rice polishing hopper 1 has an upper and lower limit level meter (sensor) 31,
30', the stacking amount of polished rice is always controlled to be constant.

On the other hand, fortified rice is introduced into the fortified rice hopper 2. When the screw comperor of the milled rice and fortified rice mixing transfer device 5 rotates and the fortified rice flowing in from the inlet 41 of the fortified rice hopper is sequentially transferred into the adjacent milled rice hopper, it is transferred from the milled rice inflow row 8. Polished rice flows into the device, and the polished rice and strengthened rice are sent to the outlet 7 while being mixed at a constant rate at their respective inflow rates.

Alternatively, the outflow amount may be adjusted to a constant value by moving the shutter 40. In this case, if there is a ratio between the cross-sectional diameters of the portions 51 and 50 of the device 5 (FIG. 2), mixing and adjustment can be performed with a more accurate ratio of the inflow amounts. Next, the mixture of polished rice and fortified rice, that is, the fortified rice, is sent to the outlet 7.
The liquid is dropped from the container and left in the cup-shaped mixer 8.

On the other hand, milled rice flows in and falls into the cup-shaped mixer 8 while surrounding the outlet 7, where the strengthened milled rice falls with the polished rice and causes secondary mixing, and then collects in the cup-shaped mixer. It falls from the outlet 9 onto a conical mountain-shaped collision piece 10 provided below. There, the strengthened polished rice that has undergone secondary mixing (that is, secondary mixed polished rice) collides with the collision pieces 101 and is scattered and dispersed around the collision pieces 101. At that time, the secondary mixed milled rice is scattered with scattering energy due to the collision. On the other hand, it passes through the gap formed by the conical peripheral wall formed by the lower part of the rice milling hopper 1 and the peripheral wall of the cup-shaped mixer 8 located therein, and then passes under the cup-shaped mixer 8. The secondary mixed milled rice having the above-mentioned scattering energy rushes into the milled rice falling through the gap around the conical mountain-shaped collision piece 10 and mixes with it.

The rice collects and flows out toward the outlet 11 of the rice milling hopper, and the product subjected to the tertiary mixing flows out. As shown in Figure 1, if there is no milled rice inflow row 8 in the first mixing transfer device that has entered the rice milling hopper, or if it is closed, the strengthened rice is transferred to the cup-shaped mixer at a fixed rate. In this case, it is particularly preferable to carry out mixed transfer using the second mixing transfer device, as already described above.

The tertiary mixed milled rice that has flowed into the second mixing transfer device can be further uniformly mixed, and the mixed product is taken out from the outlet 14, and a conical mountain-shaped collision 15 is formed below the outlet 14. If provided, mixing will be repeated and its accuracy will be increased.

[Brief explanation of the drawing]

FIG. 1 is an overall view, and FIG. 2 is a partial view of the lower entrance of the hopper in FIG. 1... Rice hopper, 2... Strengthened rice hopper, 31, 30...
Upper limit and lower limit level meter (sensor) for rice polishing stacking, 41...Outlet of reinforced rice hopper, 40...Shutter of the outlet,
5... First mixing transfer device, 51... Outlet portion of the strengthened rice of the first mixing transfer device, 5 Melon... Inlet portion of the polished rice of the first mixing transfer device, 6... First rice transfer Screw comparer of the device, 7... Delivery port of the first mixing transfer device, 8...
- Cup-shaped mixer, 9... Outlet of cup-shaped mixer, 10...
- Conical mountain-shaped collision piece, 11... Outlet of the rice milling hopper, 12... Second mixing transfer device, 13... Screw conveyor of the second mixing transfer device, 14... Feeding of the second mixing transfer device 5 Outlet, 15...Conical mountain-shaped collision piece, 16...Baffle plate on the surface of the conical mountain-shaped collision piece, 17...Reducer, 181
... 4 Milled rice inlet of the first mixing transfer device in the rice milling hopper, 180... Shutter of the milled rice inlet, 19.
・Continuously variable speed motor. Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. Hoppers that individually accommodate different types of powder and granular materials are arranged in parallel, connected to the outlet at the bottom of one hopper, passed through the inside of the other hopper, and then built into the same hopper. A first mixing and transferring device for powder and granular material is provided, which communicates with the cup-shaped mixer and has an opening for feeding the powder into the vessel, and the cup-shaped mixer includes:
It is formed into a cup shape concentric with the conical peripheral wall formed below the other hopper, and has an outlet at its bottom protrusion, and a conical mountain-shaped collision piece is provided between this outlet and the outlet of the same hopper. A continuous mixing device for powder and granular materials that mixes and transfers the powder and granular materials under the outlet of the hopper. 2. When mixing and transferring powder and granules to the lower part of the outlet of the other hopper equipped with a conical mountain-shaped collision piece, a first device is installed at the lower part of the outlet so that the powder and granules are repeatedly mixed and sent out. 2. The continuous mixing device for powder and granular materials according to 1, which is provided with a second mixing and transferring device as described above. 3. When mixing and transferring the powder and granules to the lower part of the outlet of the other hopper provided with the conical mountain-shaped collision piece, a first device is installed at the lower part of the outlet so as to repeatedly mix and transfer the powder and granules. 2. The continuous mixing device for powder and granular materials according to 1, wherein the second mixing transfer device has a conical mountain-shaped collision piece at the bottom of the outlet thereof. 4. The continuous mixing device for powder and granular materials according to 1, 2, or 3, wherein the first mixing and transferring device for powder and granular materials and the second mixing and transferring device are interlocked to adjust the flow rate of the mixed and transferred powder and granular materials. . 5. In the first mixing transfer device connected to the outlet at the bottom of one hopper, passing through the other hopper and communicating with the cup-type mixer, while passing through the other hopper and communicating with the cup-type mixer, 2. The continuous mixing device for powder and granular material according to 1, which is provided with an inlet for the other dissimilar powder and granular material. 6 A mixing transfer device that has both openings, an outlet in one hopper and an inlet in the other hopper, is divided into two parts at the part where each opening is located, and the cross-sectional diameter of both parts is set at a constant ratio. 6. The continuous mixing device for powder and granular materials according to 1 or 5, which is provided with a difference.