JP3407219B2 - Sorting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for selecting an object to be selected such as minerals according to the distance traveled by wind force.

[0002]

Conventionally, when sand is produced, it is first crushed by a centrifugal crusher or the like and then sieved into coarse particles and fine particles by a sieving machine such as a screen. While being returned to the crusher, the fine particles are further classified into fine particles and fine particles by a classifier such as a cyclone in the next step, and finally the fine particles are treated by a dust collector.

As described above, since the screening process such as the crushing process requires a sieving machine such as a screen, a classifier such as a cyclone, and a dust collector, it causes a cost increase. Further, the conventional vibration type sieving machine itself is expensive.

The present invention is an apparatus having both the functions of a conventional sieving machine and a classifier, and it is possible to reduce the number of apparatuses in the selection process to reduce the cost.
An object of the present invention is to provide a sorting machine that can simplify the structure of the device and reduce the cost of the device itself.

[0005]

In order to solve the above-mentioned problems, the present invention provides claim 1 in which a material to be sorted is blown off by wind force and is provided in the space where the material to be sorted is blown.
Items to be skipped over the cutting member and items to be dropped toward you
In the sorting device that sorts into
The particle size gradually decreases from the side toward the horizontal direction.
Provided is a sorting device characterized by dispersing and dropping .

According to a second aspect of the present invention, in the sorting apparatus according to the first aspect of the present invention, a plurality of rods are provided with a wind-generating end.
Bars are arranged in parallel so that they are located on the source side, and between bars
There is a gap that gradually increases from the base end to the tip.
A bar group that has been scraped, and is supplied on the base end of this bar group.
The sorted object moves on the bar group toward the tip.
When falling, it gradually falls from the gap in ascending order of particle size.
This allows the objects to be sorted to move horizontally from the wind source side.
The present invention provides a sorting device characterized by being dispersed and dropped so that the particle diameter becomes gradually smaller .

According to a third aspect of the present invention, in the sorting apparatus according to the second aspect, one end of each bar is placed or a plurality of tips are placed.
By placing them up and down in the rest position,
There is a gap that gradually increases from the base end to the tip.
( EN) Provided is a sorting device characterized by being scraped .

According to a fourth aspect of the present invention, in the sorting apparatus according to the second or third aspect, the rods are horizontally attached to each other.
( EN) Provided is a sorting device characterized by reciprocating the tip of each of them so as to draw an arc .

As a fifth aspect, in the sorting apparatus according to any one of the first to fourth aspects, the air is blown off by the wind force.
Fine particles in the sorted objects are collected by a dust collector and discharged.
Provided is a sorting device, which is characterized by being put out .

[0010]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the following description, the case where the sorting apparatus of the present invention is incorporated in a part of a sand making plant is given as an example, but it can be used for sorting other than minerals such as sand.

<A> Housing As shown in FIG. 1, the housing 100 includes a central selection chamber 110, a blower chamber 120 communicating with a side end thereof, a dust collecting chamber 130 communicating with an upper portion of the other end, and a blower chamber. The circulation chamber 140 communicating with the lower part on the 120 side, and the discharge chamber 1 communicating with the opposite side
50, a dispersion chamber 160 communicating with the upper part of the blower chamber 120 side.

A partition 121 is provided between the sorting chamber 110 and the blower chamber 120, and a ventilation port 122 is provided above the partition 121. Since the ventilation path is narrowed by the ventilation port 122, the wind force can be increased when passing through this.

A circulation port 141 and a discharge port 151 are provided in the circulation chamber 140 and the discharge chamber 150, respectively.
Out of the selected crushed sand, the final product size (fine particles) is discharged from the discharge port 151, and the product size oversize (coarse particles) is crushed again in order to crush again.
It is returned to the sand crusher such as a centrifugal crusher. Circulation chamber 140
Further, it is preferable that screw conveyors 142 and 152, a belt conveyor, and the like be provided in the discharge chamber 150, respectively.

A crushed sand supply port 161 is provided in the upper part of one end of the dispersion chamber 160.

<B> Wind power generation source As a wind power generation source for blowing away the objects to be sorted, for example, a blower 200 is used. This blower 200 has a blower chamber 1
20 and is configured to be able to send the wind force into the blower chamber 120. Needless to say, any device other than the blower can be used as long as it can generate wind power.

<C> The partition member 300 is erected on the way in the space where the crushed sand is blown in the partition member selection chamber 110. By providing the partition member 300, it is possible to select crushed sand (fine particles) that jumps over this and crushed sand (coarse particles) that falls toward you.

In the embodiment shown in FIG. 1, the crushed sand that jumps over the partition member 300 is the final product size discharged from the discharge port 151, and the crushed sand that falls toward the front is the product size over the product discharged from the circulation port 141. This is the case when it is configured to become a thing.

The shape of the partition member 300 is not particularly limited, but in some cases, the position and shape of the partition member 300 can be changed. For example, a case where a movable plate 310 as shown in FIG. 1 is provided can be considered. This movable plate 310
Has a lower end pivotally supported, is disposed so as to face the direction in which the crushed sand flies, and is tiltable toward the circulation chamber 140 side and the discharge chamber 150 side.

By adjusting the tilting angle of the movable plate 310, it is possible to adjust the ratio of the crushed sand that jumps over this and the crushed sand that falls to the front, and the coarse particle ratio (FM) of the product size and the non-product size. Value) can be adjusted arbitrarily.

In this embodiment, the partition member 300 is
Although it is provided at two or more locations at predetermined intervals in the direction in which the crushed sand flies, for example, three sizes of product size under, product size and product size are selected, or these particle sizes are selected. It is also possible to select more than one for each size.

Depending on the shape of the bottom of the housing 100, the partition member may be unnecessary. The partition member is not necessary even when rough selection is acceptable.

<D> Dispersing Device As shown in FIGS. 1 to 3, the dispersing device 400 includes a base portion 410.
From the plurality of rods 420, the tips of which are blowers 20
By arranging them in parallel so that they are located on the 0 side, and arranging one tip or two or more tip parts vertically above each other, a gap 4 gradually increases from the base end part to the tip part 4
30 is provided and configured.

The rods 420 are arranged in a radial pattern,
Also, by arranging the tip end portion on a straight line, it is possible to provide a gap that gradually increases from the base end portion of the rod member 420 group toward the tip end portion.

As a result, as shown in FIG.
When the crushed sand supplied to the base end portions of the 20 groups moves toward the tip end on the bar members 420, the crushed sand gradually falls from the small particle size through the gap 430 between the bar members 420. Therefore, the crushed sand that is falling can be dispersed so that the particle size becomes gradually smaller in the horizontal direction from the blower 200 side.

However, the purpose of the dispersion is to provide a gap between the crushed sand particles in order to prevent the crushed sand particles from colliding with each other and obstructing the selection when the crushed sand is blown away by the wind force. Therefore, it may be in a dispersed state in which different particle sizes are mixed.

Further, in order that the wind force effectively acts on the falling sand, it is desirable that the falling speed of the sand is low. Therefore, the inclination angle of the group of rods 420 with respect to the horizontal direction is set to be gentle so that the initial falling speed of the crushed sand becomes slow. Further, it is preferable that the group of rods 420 and the ventilation port 122 are arranged close to each other so that the wind force acts before the falling speed of the crushed sand is accelerated.

As shown in FIG. 3, the bar members 420 are configured to be horizontally reciprocable so that the supplied crushed sand is smoothly dispersed without remaining on the bar members 420. Can be dropped.

The reason is that when the group of rods 420 is stopped, crushed sand is retained in the upper space of the rods 420 even if it is instantaneous, as indicated by the diagonal lines, and it is pulled out by continuous retention. This is because the gap 430 may be clogged. In addition, the moving range of the bar member 420 is at least the bar member 42.
If it moves to the left or right by the radius of 0, the crushed sand will easily slip off and the retention can be effectively prevented.

As the dispersing device, a known vibration feeder or other device having a dispersing function can be adopted. Of course, there is a case where the dispersion device is not used.

<E> Dust collector The apparatus of the present invention has the function of sieving coarse particles and fine particles as in a conventional screen sieving machine such as a screen and the function of a conventional cyclone classifying machine as described above. It also has the function of classifying fine particles and fine particles as described above. That is,
As shown in FIG. 1, the fine particles are blown off by wind force and collected in the dust collecting chamber 130, and are discharged from the housing 100 by a known dust collector 500 communicating with the dust collecting chamber 130.

[0031]

As shown in FIGS. 1 and 4, the crushed sand supplied from the supply port 161 passes through the dispersion device 400 and drops into the sorting chamber 110 while forming a dispersion layer for each particle size.
As soon as it falls, it is blown away by the wind force from the ventilation port 122. The blown crushed sand is sorted into those that jump over the partition member 300 and those that fall in front.
That is, coarse particles and fine particles can be sieved like a conventional screen sieving machine.

At this time, as shown in FIG. 4, there is a gap between the falling crushed sand particles so that the crushed sand particles can be less likely to collide with each other. Therefore, efficient selection is possible. In addition, since the product oversized dispersion layer is formed on the circulation chamber 140 side,
It is easy to fall to the side, and the dispersion layer of product size has a discharge chamber 15
Since it is formed on the 0 side, it easily falls to the discharge chamber 150 side.
Therefore, more efficient selection becomes possible.

Then, the jumped product is discharged from the discharge port 151 as a final product, and the product dropped before is returned from the circulation port 141 to the sand maker for further crushing. By adjusting the tilt angle of the movable plate 310,
The coarse grain ratio (FM value) between the product size and the non-product size can be arbitrarily adjusted, and can also be adjusted by adjusting the wind force generated by the blower 200.

At the same time as the sieving process of coarse particles and fine particles as described above, like a conventional classifier such as a cyclone,
A step of classifying fine particles and fine particles is performed. That is, the fine particles are blown to the dust collecting chamber 130 by the wind force, and are discharged there by the dust collector 500.

[0035]

[Experimental Results] FIG. 5 shows an experimental apparatus for collecting the blown-off crushed sand in the sampling boxes 1 to 3, and the particle size of each sampling box was measured. The measurement result is shown in FIG. From this, it can be seen that due to the difference in the weight of the crushed sand, that is, the difference in particle size, relatively large ones fall in the foreground and small ones fly far.

[0036]

Since the present invention is as described above,
The following effects can be obtained. <B> Since it has both the functions of a conventional sieving machine and a classifier, it is possible to reduce the number of devices in the selection process and reduce the cost.

<B> Further, as compared with the conventional vibrating type sieving machine, since the structure of the device is simplified, the cost of the device itself can be reduced.

<C> By making the shape and position of the partition member changeable, it is possible to adjust the ratio of the objects to be sorted that jump over the partition member and the objects to be dropped that fall toward the front. The ratio can also be adjusted by changing the wind force.

<D> By dropping the objects to be sorted in a state of being dispersed by the bar group , the sorting accuracy can be improved.

<E> By constructing the bar group so that it can reciprocate in the horizontal direction, the supplied objects to be sorted can be smoothly dispersed and dropped without staying on the bar group. .

[Brief description of drawings]

FIG. 1 is an explanatory view of the entire structure of a sorting apparatus of the present invention.

FIG. 2 is a perspective view of a dispersion device.

FIG. 3 is an explanatory diagram of a horizontal reciprocating function of the dispersion device.

FIG. 4 is an explanatory diagram showing a sorting action.

FIG. 5 is an explanatory diagram of the experimental method.

FIG. 6 Explanatory diagram of experimental results

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-273 (JP, A) JP-A-5-285410 (JP, A) Actual development JP-A-107479 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B07B 1/00-15/00

Claims (5)

(57) [Claims] The method according to claim 1] object to be sorted matter blown by wind, the
The partition member provided in the middle of the space where the sorted objects are skipped
Sorts over the objects to be sorted and objects to be sorted that fall to the front
In the sorting device, the objects to be sorted are gradually moved horizontally from the wind source side.
A sorting device characterized by dispersing and dropping particles so that the particle size becomes smaller . 2. The sorting apparatus according to claim 1,
Multiple rods with their tips located on the wind source side
The bars are arranged side by side as shown in the figure
A bar group with a gap that gradually increases toward the
Items to be sorted that are configured and supplied on the base end of this bar group
When moving toward the tip on the bar group,
Gradually falling from the gap in ascending order of particle size
Grain size gradually increases from the wind source side in the horizontal direction.
A sorting device characterized by being dispersed so as to be small and dropping . 3. The sorting apparatus according to claim 2,
Move the tip of each bar up or down every other
By positioning the
The sorting device is characterized in that a gradually increasing gap is provided toward the portion . 4. The sorting apparatus according to claim 2 or 3 , wherein each bar is horizontally oriented and its tip has an arc.
A sorting device characterized by reciprocating motion as drawn . In sorting apparatus according to any one of claims 5] claims 1 to 4, the sorted matters in blown away by the wind
The sorting device is characterized in that the fine particles are collected by a dust collector and discharged .