JPS6036392Y2 - Foreign matter removal device for vertical grain sorter - Google Patents

Description

[Detailed description of the invention] The present invention is designed to prevent foreign matter that may be mixed into the grains to be sorted when feeding the grains to a vertical grain sorter.
The present invention relates to a device for preventing entry into the interior of a vertical grain sorter.

Here, foreign matter refers to foreign matter, regardless of its shape, such as lumps, fibers, or powder, which, if it enters the inside of the vertical grain sorter, will interfere with the normal operation of the vertical grain sorter. refer to things

Further, foreign substances include those such as bran and dust, and those such as pebbles and straw waste, and in this specification, the former are referred to as hosimono, and the latter are referred to as kurimono.

Vertical grain sorter (hereinafter simply referred to as a sorter).

) has the structure as outlined below, so there are many parts that are driven with minute gaps between them.

Therefore, if foreign matter enters the interior, it often gets caught in the drive unit or gets caught in the gap, which not only impedes normal operation but may even damage the sorter. Not rare.

The present invention is a device for preventing such a situation from occurring.

The general structure of the sorting machine is explained based on Figure 1.
Reference numeral 1 denotes an outer shell, inside of which there is a cylindrical sorting net 15 for sieving out small-sized waste particles and crushed particles, and a filter concentrically fitted inside the sorting net 15. A grain spiral shaft 19 is provided upright, and the sorting net 15 and spiral shaft 19 are configured to rotate in opposite directions.

In this case, the rotation speed of the sorting net 15 is 50 to 1QQr,
p, m, and the rotational speed of the spiral shaft 19 is 250~
400r.

Usually, they are p and m.

The peripheral wall of the sorting net 15 is provided with countless mesh holes (not shown) that allow small-diameter grains to be sieved to pass through, but large grain size grains do not pass through. A spiral blade 20 is provided extending over the entire length of the outer peripheral wall.

The gap between the tip edge of the spiral blade 20 and the inner peripheral surface of the sorting net 15 is extremely narrow.

The space between the inner circumferential wall of the outer shell 1 and the outer circumferential wall of the sorting net 15 is divided into a supply zone 2, a sieve zone 3, and a take-out zone 4 from the bottom to the top. A lower partition plate 5 is provided at the boundary between the sieving area 3 and the extraction area 4, and an upper partition plate 6 is provided at the boundary between the sieving area 3 and the extraction area 4.

Sorting net 15 in the portion facing the lower partition plate 5 and upper partition plate 6
A lower blade 16 and an upper blade 17 that rotate along the lower partition plate 5 and the two-part partition plate 6 are protruded from the outer wall surface of the lower partition plate 5 and the upper partition plate 6, respectively. Edge standing walls 7, 7 are provided on the inner peripheral edge, respectively, and each of the edge standing walls 7, 7 is inserted into a small gap between the outer wall surface of the sorting net 15 and the lower scraper blade 16 and the upper scraper blade 17. be.

At the bottom of the base plate 11 that supports internal main structures such as the sorting net 15 and the spiral shaft 19, there is a gear group configured to transmit rotational operation at a predetermined speed to the sorting net 15 and the spiral shaft 19, respectively. There is a built-in gear box 12.

Although not shown, a discharge port is provided at the lower partition plate 5 on the back surface of the outer shell 1 to discharge small particles sieved into the sieve area.

When a sorting machine having such a structure is operated and grains to be sorted are inputted from the supply port 21, the grains to be sorted, which have been received in the grain receiver bottom 18, are transferred to the spiral blades 2 of the rotating spiral shaft 19.
Scooped up by 0.

Since centrifugal force is simultaneously applied to the grains during the lifting process, grains to be sorted are pushed toward the inner wall of the sorting net 15, and small grains pass through the mesh holes and are removed to the sieving area 3. .

In this way, by the time the grains to be sorted reach the top of the sorting net 15, most of the small grains have been sieved out, and only the large grains remain, and the grains are transferred from the discharge port 8 to the take-out area 4. It is released and collected into the storage hopper 9.

The sorted grains stored in the storage hopper 9 are taken out from the takeout port 10 in predetermined amounts, and are packed in bags and shipped.

However, the collection of grains to be sorted contains bran, straw waste, dust, sand, etc., and sometimes lumps such as pebbles are also mixed in.

If such foreign matter is thrown into the sorting machine together with the grains to be sorted, it may get caught or clog the drive part or power transmission part that has the small gap, impeding the function of the sorting machine. That is clear.

Therefore, this invention aims to prevent such obstacles from occurring.
The feed port 21 for grains to be sorted and its vicinity have been improved.

An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 23 is the thin part of the present invention, and 2
4 is a braid prevention part, and 26 is a thin article holder part.

The thin material feed section 23 is provided on the inclined bottom surface 22 of the supply port 21 up to the chute 29.

The fine material removal section 23 is a part that separates and removes fine fine materials 31 such as dust, sand, and bran mixed in the grains to be sorted to the outside of the inclined bottom surface 22.

Since such fine objects 31 need to be separated and removed as much as possible, it is preferable that they occupy as long a path as possible.

Even if the sloped bottom surface 22 occupies the same area, the distance becomes longer in proportion to the degree of the slope angle, so the slope angle is smaller than that of the thin object 31.
has a large relationship with the separation efficiency.

If only the distance is to be lengthened, the angle of inclination of the bottom surface can be made steep, but if the angle is too steep, the flow rate of the grains to be sorted will be faster, and therefore the grains will fall on the fine grain through section 23. Since the time becomes shorter, the separation efficiency of the fine particles 31 becomes worse.

In this embodiment, taking these things into consideration, the inclined bottom surface 22
Good results were obtained by setting the inclination angle of the thin part 23 to 30 to 45 degrees.

Since the particle size of the fine particles 31 to be separated and removed is smaller than 20 meshes, the fine particle filter section 23 is constructed using a material having countless gaps through which particles of such a particle size can pass.

The most commonly used constituent material is wire mesh, but slit plate material may also be used.

These wire mesh or slit plate materials may be fixedly attached to the window by drilling a window in the inclined bottom surface 22, or they may be attached to a frame (see FIG.
The structure may be such that it can be detachably attached to the window.

This is convenient for cleaning when the wire mesh or slit plate material becomes clogged, or for replacing work when it is necessary to change the particle size of the fine particles 31 to be separated.

The braid prevention part 24 is provided above the thin article threading part 23 with a gentle slope.

The braid blocking part 24 is a part that blocks the passage of long objects such as straw waste or braids 30 such as pebbles, so it is made of a material having a gap slightly larger than the diameter of the grains to be sorted. Configure.

Since it is extremely easy for grains to be sorted to pass through such gaps, there is no need to provide a slope, but if a slope is provided, the blocked braids 30 will naturally gather at the lower edge of the slope. This does not impede the passage of grains to be sorted that are supplied later.

Therefore, in this embodiment, this angle of inclination is approximately 2O2.

The material of the braid blocking part 24 is also a wire mesh or a slit plate material, similar to the material of the threading part 23.

It is convenient if these materials are pasted on a frame body and the frame body is removably locked above the thin article threading part 23 and mounted.

Examples of such frames are shown in Figure 2 at b and c.
It's like this.

Of course, the shape of the gap is not limited to that shown.

When the supply port 21 with this frame body 25 attached is viewed from above, the third
As shown in the figure.

As can be seen from this figure, the width W of the frame body 25 is the depth D.
It is much wider than the

This is because when the frame body 25 is attached to the supply port 21 at an angle, its lower edge becomes long, and when the braid 30 is blocked from passing and remains on the frame body 25, the long lower edge becomes long. The grains are dispersed and pushed to one side, ensuring a wide effective passage area for grains to be sorted at all times, and taking care not to obstruct the passage of grains to be sorted to be supplied later.

The braid prevention part 24 and the thin article threading part 23 of the supply port 21 are
When viewed in cross section along line A--A in FIG. 1, it is as shown in FIG. 4.

In the embodiment shown in FIG. 1, the braid prevention part 24 is installed with a downward slope toward the outer wall surface of the outer shell 1, but in contrast to this, the braid prevention part 24 is installed with a downward slope toward the outer wall surface of the outer shell 1. It may be a downward slope.

An example of this is shown in FIG. 5.

When the braided blocking part 24 is installed as shown in FIG.
Many of the thin objects fall onto the upper edge of the slot 23 along the inclined surface of the outer shell 1 in the direction away from the outer wall surface of the outer shell 1. This increases the time and distance that the thin object is on the sieve section 23, which has the effect of improving the separation efficiency of the thin object 31.

The thin object receiving section 26 is arranged directly below the thin object receiving section 23.

Normally, the upper side of the thin object receiving part 26 is the same as the thin object holding part 23.
The container opens with an inclined upper edge that follows the angle of inclination.

A perspective view of a container 26' constituting the part 26 of this thin article receptacle is as shown in FIG. 6.

By the way, below the supply port 21 in FIG. In this case, the thin object holder is part 2.
By placing the container 26' constituting the supply port 21 on the upper flat surface of the cover 14, the wasted space between the supply port 21 and the cover 14 can be effectively utilized.

28 is a door whose lower part is pivoted by a hinge 27.

The container 26' constituting the thin object receiving section 26 is taken in and out of the space directly below the thin object receiving section 23 by rotating and closing the door 28.

In this embodiment, the part 26 of the thin article receptacle is configured with a container 26', but this does not necessarily have to be the container 26', and the space between the supply port 21 and the cover 14 is One room may be formed by surrounding the room with partition walls (not shown) extending in three directions excluding the wall surface, and the opening/closing door 28 may be provided in one of the partition walls.

Since the foreign matter removing device according to the present invention has a structure similar to that of Narukami, when grains to be sorted are put into the supply port 21,
The braids 30 mixed therein are collected at the inclined lower edge of the braid prevention part 24, and the grains and fine particles 31 which are thinner than the grain size equivalent to the grains are collected.
The grains pass through the plait prevention part 23 and fall onto the thin material sieving section 23, where the thin material 31, which is thinner than the grain, passes through and is separated, and the thin material receiver immediately below is separated. 26, most of the foreign matter is removed, and only the grains are introduced through the chute 29 into the grain receiver bottom 18 in the sorter.

Therefore, the drive part and the power transmission part, which have small gaps, are not caught or clogged with foreign matter, so that the sorter can always operate in a normal state.

Moreover, it has the advantage of making effective use of wasted space without making any major structural changes to the supply port 21 or its vicinity.

[Brief explanation of drawings]

Fig. 1 is a front cross-sectional view of a vertical grain sorter equipped with a foreign matter removing device according to the present invention, with some parts omitted;
Figures a, b, and c are perspective views of the frame provided with wire mesh or slits, Figure 3 is a plan view of the supply port with the frame attached, Figure 4 is a sectional view taken along line A-A in Figure 1, FIG. 5 is a partial front sectional view of the supply port and its vicinity showing another embodiment of the foreign matter removing device, and FIG. 6 is a perspective view of the container constituting the thin object receptacle. 1... Outer shell body, 2... Supply area, 3...
... Sieving area, 4... Taking out area, 5...
・Lower partition plate, 6... Upper partition plate, 7...
... Vertical wall, butt ... Discharge port, 9 ... Storage hopper, 10 ... Output port, 11 ... Base plate, 12 ...・Gear box, 13...
Motor, 14... Cover, 15... Sorting net, 16... Lower scraper, 17...
・Upper blade, 18... Grain receiving bottom, 19...
...Spiral shaft, 20...Spiral wing, 21.
... Supply port, 22 ... Inclined bottom surface, 23.
... Thin object and push part, 24 ... Rough part blocking part, 25 ... Frame body, 26 ... Thin object holder part, 26'... ...Container, 27...Hinge,
2. Door, 29. Shoot, 30. Kumimono, 1. Thin items.

Claims (1)

[Scope of utility model registration request] Inside the vertical cylindrical shell, a cylindrical sorting net for sieving grains and a lifting spiral shaft fitted inside the sorting net are erected so as to rotate concentrically. In a vertical grain sorter, a feed port for guiding grains to a grain receiving section below the sorting net is provided with a thin object and a sieve section on the bottom surface of the feed port, which allows fine objects to pass through. A braid blocking part for blocking the passage of objects is provided, a thin article receiver is provided directly below the thin article and the insert part, and a thin article receiver is arranged directly below the thin article and the insert part. A foreign matter removal device for a vertical grain sorter featuring: