JPS588461B2 - Hopper for charging granular material to be weighed - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charging hopper for weighing and packing grains, mainly rice, into bags.

Regarding bagged rice, in order to indicate the quality of the bagged rice, a portion of the bagged rice must be extracted and used as a sample.In the past, the bagged rice was not sealed and was kept waiting for inspection. ,
Samples were taken directly from the bags and sealed after quality inspection.

However, such a method not only significantly reduces packaging efficiency, but also requires a vast workshop for uninspected bagged rice, which increases costs.

Therefore, in recent years, in the process of weighing each bag, a sample is extracted from a part of the falling rice that is thrown into the receiver from the hopper, and the extracted sample is made to avoid mismatching with the bags before and after it. Separately divide the rice into strips, seal the bagged rice with another bag, mark the sample bag and the bagged bag sequentially with symmetrical symbols, and then take out the sample from the continuous sample bag and check the rice. Quality inspection methods were adopted, and rice quality inspections were streamlined.

However, when extracting some of the rice that is falling into the receiver from the hopper, large particles tend to gather in the center and waste rice gathers in the periphery, although this varies slightly depending on the shape of the hopper. In addition, when using a single-flow gutter, there is a tendency for items with high specific gravity to gather at the bottom and items with low specific gravity at the top, and depending on where the falling rice is collected, the quality may be unevenly distributed. However, there is a risk that the rice may be taken as a sample, and the quality of the rice in the package and the sample may differ.

Therefore, in the present invention, at the lower part of the input hopper,
This device prevents the quality of flowing rice from becoming uneven depending on where it flows down, and allows for accurate sample collection.

The invention will now be described with reference to the figures.

In Fig. 1, numeral 10 is a granular material tank, and a charging hopper 11 is integrally provided at the bottom of the tank, and a discharge opening/closing gate 12 consisting of a pair of doors sliding on both sides is installed at the lower end of the tank. The gate 12 is equipped to be actuated electromagnetically or pneumatically.

A granular material stirring device A is provided in the lower part 11 of the hopper just above the discharge opening/closing gate 12.

This granular material stirring device A is not particularly limited as long as it can stir the fluid in the entire region below the hopper and eliminate uneven distribution of quality depending on the location.

Reference numeral 14 denotes a weighing container, which is used to weigh the granules placed therein.

Reference numeral 15 denotes a sample collection receptacle installed in the flow path for falling particulate matter falling from the discharge opening/closing gate 12 into the weighing container 14, and from the small amount of collected particulate matter, a necessary amount is passed through the gutter 16 as a sample, and is separately collected. The provided packaging machine 17 sequentially wraps the granules in a packaging material band as a continuous packaging bag 18, and the extra granules collected are returned to the weighing container 14 from the middle of the gutter 16, and the granules in the weighing container 14 are weighed in a predetermined amount. After that, it is filled into a large packaging bag 20 through the chute 19 and sealed.

The granular material stirring device A will be explained in more detail based on what is shown in the drawings.

In the one shown in Figs. 2 and 3, the charging hopper 1
The lower rectangular tube part 11a of 1 is divided into an even number of flat partition passages 22 by an odd number of vertical partition plates 21, and each partition passage 22 is divided from one inner wall surface of the rectangular cylinder part 11a to the center part. An inclined guide plate 23 is provided with a central part inclined low toward
The direction of inclination is the opposite direction.

Therefore, the particulate matter passing through this particulate matter stirring device A is guided by the inclined guide plate 23 where it does not flow to the opposite side, and where it does not hit the inclined guide plate 23, it continues to flow straight down, and within each compartment passage 22. These two flows collide with each other and are disturbed, and the flows cross each other left and right in every other compartment passage, and the quality of the fluid passing through the granular material stirring device A is uniform over almost the entire area. Become.

In the granular material stirring device A shown in FIGS. 4 and 5, a horizontal and parallel shaft 24.
25 are supported on the rectangular tube part 11a at the bottom of the hopper, and several stirring blades 26 and 27 are fixed to these horizontal shafts radially at equal angular intervals in a plane including this axis. The outer ends of the shafts 24, 25 are equipped with gears 28, 28, 28, of the same number of teeth and of the same size. 2
9, and the stirring blades 26. In the hopper 11 above 27, the granules are transferred to the two shafts 24 and 25.
An inclined plate 30, 31 is provided leading between the two.

In the embodiment described above, the inclined plate 30 . 31 by two horizontal axes 24. The particulate matter is guided between the stirring blades 25 and 25, and hits the stirring blades 26 and 27.
．． 27 rotates, and the granules are agitated during this rotation.

In the granular material stirring device of the embodiment shown in FIG. 6, unlike the embodiments of FIGS. 4 and 5, instead of the stirring blades 26, 27, stirring rods 32 are arranged radially in the radial direction. ,
and shaft 24. 25 is connected to a motor 33 via a suitable speed reduction device for forced driving.

In the embodiment shown in FIG. 7, the granular material stirring devices shown in FIGS. 2 and 3 and the granular material stirring devices shown in FIGS. 4 and 5 are provided hierarchically, and the same reference numerals are used. are the same constituent members.

In the embodiment shown in FIG. 8, in the granular material stirring device A, a spindle-shaped baffle member 34 is provided inside the lower cylindrical portion 1lb of the hopper 11, and this and the cylindrical portion
The lower end of 1b is slightly narrowed inward to form a converging portion 36.

In this device, the falling particulates flow in a cylindrical shape in the flow passage 35 formed between the baffle member 34 and the lower cylindrical part 1Ib, flow down from the periphery toward the center at once by the lower constriction part 36, and flow down to the center. The liquids collide with each other at some points, are stirred, become a uniform flow, and flow down into the weighing container 14.

In the embodiment shown in FIG. 9, the cylindrical portion 1lb is equipped with a rotary blade 38 having a reed angle rotatably supported on a vertical shaft 37, and the rotary blade 38 is rotated by the flowing fluid. Stir.

In some cases, the rotor 38 may be forcibly driven.

In the above-mentioned device, the quality distribution of the granules in the hopper 11 becomes uniform throughout the falling passage while passing through the granule stirring device A or just below it, and the discharge gate 12 When sampling between the granules and the weighing container 14, the sample is equal to the granular material weighed in the weighing container 14 regardless of where the sample is taken.

In addition, in the devices shown in FIGS. 2, 3, and 8, there is no movable member in the particulate matter stirring device A, and the structure is simple and there is no failure.

Furthermore, in each of the embodiments, there is almost no deterioration in the quality of the granules due to friction between the granules or rubbing against the constituent members of the stirring device.

[Brief explanation of the drawing]

The drawings relate to the present invention, and FIG. 1 is a schematic explanatory diagram showing the mechanism of the entire device, FIG. 2 is a vertical cross-sectional bottom view of the granular material stirring device of the first embodiment, and FIG. 3 is a diagram showing the second embodiment. Perspective view of 4th
5 is a perspective view of the rotor blade of FIG. 4, FIG. 6 is a perspective view of the rotor blade of the third embodiment, and FIG. 7 is a perspective view of the rotor blade of the fourth embodiment. FIG. 8 is a longitudinal sectional front view of the fifth embodiment, and FIG. 9 is a longitudinal sectional front view of the sixth embodiment. In the figure, 10... granule tank, 11...
・Inserting hopper, 11a...Square tube part, 12・
...Discharge opening/closing gate, 13...Door, A
..... Particulate matter stirring device, 14 .... Weighing container, 15 .... Sample collection receiver, 16 ....
・Gutter, 19...Chute, 20...Large packaging bag, 21...Partition plate, 22...
Ward, 23... Inclined guide plate, 17... Packaging machine, 18... Continuous packaging bag.

Claims (1)

[Scope of Claims] 1. A device for collecting a part of the granular flow falling from the hopper as a sample between a hopper having a discharge gate at its lower end and a receiver on the lower side, comprising: A charging hopper characterized in that a granular material stirring device is provided at the lower part of the upper hopper. 2 When viewed from above, the stirring device is divided by several parallel partition plates, and between each partition plate, guide plates that are inclined from the lower side wall of the hopper toward the center of the hopper alternate in different directions in adjacent partitions. 2. The charging hopper according to claim 1, wherein the charging hopper is configured such that the input hopper is provided with a hopper. 3. The stirring device according to claim 1, characterized in that the stirring device comprises a pair of rotating bodies rotatably supported by a horizontal shaft, each of which has one type of stirring rod or plate fixed in the radial direction. Injection hopper 4 The stirring device has a cross section with a peripheral part left in the lower part of the hopper, the upper end has a conical shape, and the lower end has a slightly narrower inner diameter along with the hopper peripheral wall. A charging hopper according to claim 1. 5. Claims characterized in that the stirring device consists of a rotating body rotatable around a vertical axis, in which one type of blades or rods having several lead angles are embedded in the radial direction. The charging hopper described in item 1.