JP2001038294A - Diffusion and charging device and scraper for the diffusion and charging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diffusion and charging device and a scraper for the diffusion and charging device for preventing a raw material from being accumulated on the upper faces of diffusion panels even if the raw material is of a high viscosity and effectively diffusing the raw material on a net face of a screen and charging the raw material. SOLUTION: A diffusion and charging device K is provided with raw material charge openings 1 for charging a raw material, rotating shafts 3 and diffusion panels 4 rotating around the rotating shafts 3 and diffusing the raw material charged from the raw material charge opening 1 onto a net face 5 of a screen and charging the same. Scrapers 10 with impact faces 9 positioned in the direction crossing the rotating direction of the diffusion panel s 4 are provided above the diffusion panels 4 and side faces of the rotating shafts 3. The impact faces 9 are positioned on the positions rotated at least by 180 deg. or more from the position whereon the raw material charged from the raw material charge opening 1 is received by the diffusion panels 4 to the rotating direction of the diffusion panels 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diffusion feeding device for feeding a raw material while diffusing it onto a mesh surface of a sieve, and a scraper for the diffusion feeding device.

[0002]

2. Description of the Related Art Conventionally, as a diffusion injection device of this type, for example, a diffusion injection device described in Japanese Utility Model Laid-Open No. 63-107782 has been known. As shown in FIGS. 4 and 5, the diffusion charging device M is attached to a raw material charging port 20 for charging a raw material, a rotating shaft 21, and a tip of the rotating shaft 21. While rotating, a disc-shaped diffusion plate 23 was provided to receive the material dropped from the material charging port 20 and diffuse and feed the material onto the mesh surface 22 of the sieve. Then, the four metal plates 24, 24, which are obliquely bridged so as to connect the upper surface of the diffusion plate 23 and the rotation shaft 21, are provided.
However, they were provided in a cross shape with the rotation shaft 21 as the center in a plan view.

[0003] The diffuser 23 is provided at a predetermined interval.
The raw materials dropped from the raw material input port 20 are diffused and input so as to be widely and uniformly dispersed on the mesh surface 22 of the sieve by rotating in opposite directions in the direction of the arrow X in the drawing. Was. In this way, the raw material is supplied onto the mesh surface 22 of the sieve without being concentrated at one place, so that clogging of the sieve can be prevented and the original sorting function of the sieve can be effectively exhibited.

[0004]

However, in the conventional diffusion charging device M, when a raw material having a high tackiness due to a high water content is used as the raw material, for example, as shown in FIG. To the upper surface of the diffusion plate 23, the metal plate 24, and the rotating shaft 21,
Piled high on the top of When the inclined surface is formed on the upper surface of the diffusion plate 23 by being piled high, the raw material dropped from the raw material input port 20 hits the inclined surface,
The scattered distance was short on the mesh surface 22 of the sieve, and it fell without being sufficiently diffused. This phenomenon becomes more remarkable as the inclination angle of the inclined surface becomes steeper, and the raw material falls on the inclined surface and falls as it is, and the raw material may be concentrated and supplied to a specific portion on the mesh surface 22 of the sieve.

[0005] Therefore, when such a highly adhesive raw material is used, when the raw material is piled high on the upper surface of the diffusion plate 23, the rotation is temporarily stopped, and the troublesome work of removing the adhered raw material may be performed. there were.

[0006] The present invention has been made in view of the problems existing in such conventional techniques, and has as its object the purpose of using a diffusion plate even if the raw material is highly adhesive. An object of the present invention is to provide a diffusion charging device capable of preventing accumulation on an upper surface and a scraper used for the diffusion charging device. Another object of the present invention is to provide a diffusion charging device capable of effectively diffusing a highly viscous raw material onto a mesh surface of a sieve and supplying the same.

[0007]

Means for Solving the Problems A diffusion injection device and a scraper used in the diffusion injection device according to the present invention have the following configurations to achieve the above object.
That is, the diffusion charging apparatus according to the first aspect of the present invention is a material charging port for charging a material, a rotating shaft, and is rotated from the rotating shaft, so that the material is dropped from the material charging port. A raw material is provided on a mesh surface of a sieve, and a diffusion plate is provided to be diffused and charged, and a collision surface positioned in a direction intersecting with the rotation direction of the diffusion plate above the diffusion plate and beside the rotation axis. And a scraper provided.

When the raw material dropped from the raw material inlet into the diffusion plate is a raw material having a high viscosity due to a high water content or the like, the raw material adheres to the upper surface of the diffusion plate or the rotating shaft, and is spread. Or pile on top of However, when the scraper having the collision surface is provided in this manner, the raw material having a high adhesiveness attached to the upper surface of the diffusion plate is removed so as to collide with the collision surface and be removed. Can be prevented.

Further, as in the diffusion injection device according to the second aspect of the present invention, it is preferable that the lower end of the collision surface extends substantially horizontally toward the rotation axis. In this case, the raw material adhering to and accumulating on the upper surface of the diffusion plate is collided with the collision surface and removed so as to be almost horizontally removed, so that a horizontal surface can be formed on the upper surface of the diffusion plate. Therefore, the raw material dropped from the raw material input port is placed on the horizontal surface without falling from the diffusion plate as it is, rolls on the horizontal surface so as to increase the residence time, and is effectively diffused on the mesh surface of the sieve. Being able to fall.

Preferably, the collision surface extends up and down to the vicinity of the upper surface of the diffusion plate, as in the diffusion device according to the third aspect of the present invention. When such a collision surface is provided, most of the raw material adhering and accumulating on the upper surface of the diffusion plate collides with the collision surface and is removed.

According to a fourth aspect of the present invention, in a rotation direction of the diffusion plate, at least 180 degrees from a position where the diffusion plate receives the raw material dropped from the raw material input port. It is desirable to provide the scraper so that the collision surface is located at the rotated position.

Most of the raw material dropped from the raw material input port to the diffusion plate is dropped at a wide angle on the mesh surface of the sieve before the diffusion plate rotates 180 degrees, thereby effectively spreading the diffusion effect. Can be played. Therefore, in order to prevent such a diffusion effect from being impaired, and to prevent a highly adhesive raw material or the like from adhering to the upper surface of the diffusion plate, after the diffusion plate receives the material, at least in the rotation direction of the diffusion plate, The collision surface is located at a position rotated by 180 degrees or more. Here, for example, if the collision surface is positioned before the diffuser receives the raw material and rotates 180 degrees or more, not only the raw material adhering to the upper surface of the diffuser but also the original diffused surface Even the raw material that is supposed to be charged into the colliding plate may collide with the collision surface, and the diffusion effect may not be effectively exerted.

It is preferable that a wear prevention plate is attached to the collision surface of the scraper as in the diffusion charging device according to the fifth aspect of the present invention. The collision surface is
As the raw material on the upper surface of the diffuser rotates and moves and collides, it receives a considerable impact and is worn away.
It is advisable to attach a wear prevention plate. The wear prevention plate is desirably a plate made of a cemented carbide.

According to a sixth aspect of the present invention, there is provided a scraper for a diffusion injection device, which is mounted so as to be positioned above a diffusion plate and beside a rotation axis of the diffusion disk. It is characterized in that it is provided with an attaching means or an attaching portion for attaching to the frame, and a collision surface against which the raw material accumulated on the upper surface of the diffusion board collides. The scraper provided with such a collision surface can prevent the raw material to be sorted from being deposited on the upper surface of the diffusion plate even if the raw material to be selected adheres to the upper surface of the diffusion plate due to strong adhesiveness.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a diffusion injection apparatus according to the present invention.

FIG. 1 to FIG. 3 show a diffusion feeding device for feeding a raw material while diffusing it on a mesh screen of a sieve. In this way, the screening function of the sieve is effectively exhibited. In particular, this diffusion charging apparatus is a raw material having a high tackiness due to a high moisture content, for example, a crushed stone aggregate having a high moisture content and containing a large amount of fine powder, High asphalt recycled raw materials, high moisture content raw materials with high slime, humus with high moisture content, granulated products such as fertilizers with high moisture content or seedling cultivation soil, or fine powder with high moisture content It is suitably used for sorting coal and the like with high content.
Of course, it may be used for sorting ordinary raw materials having a low water content, for example, dried earth and sand, gravel, crushed stone, or fine powder for fertilizer or feed.

As shown in FIG. 1 or FIG. 2, the diffusion charging device K includes a raw material charging port 1 for charging a raw material, a driving unit 2 such as a motor, and a winding element such as a belt or a chain. The two rotating shafts 3, 3 that are connected so as to rotate in opposite directions by the driving of the motor, and the rotating shafts 3, 3
And disk-shaped diffusing plates 4 and 4 that are rotatably mounted around the center. These two rotating shafts 3, 3
Are supported by a bearing 7 such as a pillow block and are juxtaposed on a beam 6 laid across the mesh surface 5 of the sieve. Hereinafter, the rotation shaft 3 and the diffusion plate 4 refer to one rotation shaft 3 and one diffusion plate 4 unless otherwise specified.

As shown in FIG. 3, on the upper surface of the diffusion plate 4, four rectangular blade plates 8, 8 are formed in a cross shape around the rotation shaft 3 in plan view. Is erected so as to be divided into four. And these slats 8, 8
The raw material inlet 1 is positioned so that the raw material is dropped into a quarter region Q corresponding to one divided region of the upper surface of the diffusion plate 4 divided into four. That is, when there are two diffusion plates 4 as in this embodiment, the raw material inlet 1 is connected to both diffusion plates 4, 4 adjacent to each other.
Are located above both diffusers 4 and 4 so as to face the respective quarter regions Q and Q.

The diffusion input device K has a collision surface 9 located above the diffusion plate 4 and beside the rotary shaft 3 in a direction substantially perpendicular to the rotation direction R of the diffusion plate 4. In addition, a scraper 10 is provided. The scraper 10 includes a plate-shaped scraper body 10a having the collision surface 9 and a scraper body 10a.
And a wear prevention plate 13 attached to the collision surface 9 to prevent abrasion of the collision surface 9. .

The collision surface 9 extends up and down to near the upper surface of the diffusion plate 4, and its lower end extends substantially horizontally toward the rotating shaft 3. The lower side of the collision surface 9 extends closer to the peripheral wall surface of the rotating shaft 3 than the upper side thereof, and covers the radial region of the diffusion plate 4 located below as much as possible. The wear prevention plate 13
Is an elongated plate-like body attached along the lower end of the collision surface 9 so as to cover the entire lower end of the collision surface 9. The wear prevention plate 13 is, for example, a plate made of cemented carbide. However, since the wear prevention plate 13 itself is reduced by repeated use, it is detachably attached to the collision surface 9 by bolting or the like. ing. Since the raw material collides with the surface of the wear prevention plate 13, the collision surface 9 includes the surface of the wear prevention plate 13 for interpretation.

The rib 12 is a plate-like body that becomes wider as it goes upward, and the thickness of the rib 12 extends vertically near the center of the back surface 11 of the scraper body 10a. A first rib 12a attached to the scraper body 10a, the thickness of which extends by the length of the lower end along the lower end of the back surface 11 of the scraper body 10a. And a second rib 12b attached to the second rib 12b.

Further, the scraper 10 is provided with mounting means or a mounting portion for mounting on the frame of the diffusion injection device K, specifically, the frame 14 forming the upper frame of the diffusion injection device K. . That is, the angle plate 15 welded to the frame 14
In addition, the upper end of the back surface 11 of the scraper body 10a and the upper end of one surface of the first rib 12a are connected by a fixing tool 16 such as a bolt and a nut, so that the scraper 10 It is attached and fixed to the frame 14. Therefore, in this case, the fixing tool 16 and the through holes formed in the scraper main body 10a and the first rib 12a for passing the fixing tool 16 constitute attachment means. Of course, not limited to the above case, for example, the scraper main body 10a and the first rib 12a are fixed to the angle plate 15 by welding or the like, and the angle plate 15 is attached to the frame 14 by the fixing tool 16. It may be. In this case, the angle plate 15, the fixing tool 16, and the like serve as attachment means. Furthermore, the scraper main body 10a and the first rib 12a may be fixed to the frame 14 by direct welding or the like. In this case, the portion where the scraper main body 10a and the first rib 12a are welded or the like is attached. Department.

Further, the scraper 10 has a collision surface 9 in a rotational direction of the diffusion plate 4 from a position where the diffusion plate 4 receives the raw material dropped from the raw material input port 1.
It is provided so as to be located at a point which is rotated by 180 degrees. In this embodiment, the scraper 10
As shown in FIG. 3, the screen of the sieve is arranged so that the collision surface 9 is on the opposite side of the inlet 1 with the rotating shaft 3 interposed therebetween and along the radial direction of the diffusion plate 4. It is provided at a position facing in a direction substantially perpendicular to the transport direction W of the raw material flowing on the surface 5.

Next, the operation of the diffusion injection device K will be described.

First, while rotating the diffusion plate 4 at a predetermined rotation speed about the rotation shaft 2 in the direction of arrow R in the figure,
The raw material is dropped onto the upper surface of the diffusion board 4 from the raw material input port 1. The material to be dropped is dropped so as to be placed on the above-mentioned quarter region Q on the upper surface of the diffusion plate 4, but depending on the characteristics of the material and other conditions, the quarter region Q
May deviate slightly. However, most of the raw material is dropped into the quarter region Q. Then, the raw materials are diffused into the mesh surface 5 of the sieve by the centrifugal force generated by the rotation of the diffusion plate 4 so as to be widely dispersed and charged. Therefore, the raw material is not concentrated on one place on the mesh surface 5 of the sieve, but is dispersed and charged so as to be widely distributed, so that the exhaustion of the sieve and clogging of the sieve can be prevented, and the original sorting function of the sieve can be prevented. It can be used effectively. In this manner, the raw materials diffused and introduced on the mesh surface 5 of the sieve can be efficiently sorted if the sieve is, for example, a vibrating sieve.

At this time, if the raw material is a highly viscous raw material due to a high water content as described above, the raw material is diffused without falling even if the diffusion plate 4 rotates. It may adhere to the upper surface of the board 4 or the rotating shaft 3 and remain. However, the diffusion board input device K includes a diffusion board 4
Above and on the side of the rotating shaft 3, a scraper 10 having a collision surface 9 positioned in a direction intersecting with the rotation direction of the diffusion plate 4 is provided. It is rotationally moved and collides with the collision surface 9, and is removed so as to be cleared. Therefore, it is possible to prevent the raw material having high adhesiveness from being accumulated on the upper surface of the diffusion plate 4.

Further, the lower end of the collision surface 9 is
The raw material extends almost horizontally toward
Even if it adheres and accumulates on the upper surface of the diffusion plate 4, it is removed so as to collide with the collision surface 9 and be cut off substantially horizontally, so that a horizontal surface can be formed on the upper surface of the diffusion plate 4. Therefore, the raw material dropped from the raw material input port 1 is placed on this horizontal surface without falling from the diffusion plate 4 as it is, rolls on the horizontal surface so as to increase the residence time, and is effectively placed on the mesh surface 5 of the sieve. Can be spread and fall.

Since the collision surface 9 extends up and down to the vicinity of the upper surface of the diffusion plate 4, most of the raw material adhered and accumulated on the upper surface of the diffusion plate 4 collides with the collision surface 9. And it can be prevented from being piled up on the upper surface of the diffusion plate 4 in a large amount.

Then, the diffusion plate 4 is rotated at least 180 degrees from the position where the raw material is dropped on the upper surface of the diffusion plate 4, and the scraper 10 is provided so that the collision surface 9 is located ahead of the rotation. Therefore, the raw material that does not adhere to the upper surface of the diffusion plate 4 is diffused at a wide angle onto the mesh surface 5 of the sieve before the diffusion plate 4 rotates 180 degrees without colliding with the collision surface 9 and thrown. Is done. Therefore, when the collision surface 9 is positioned in this way, the collision surface 9 does not hinder the original diffusion effect. On the other hand, the highly adhesive raw material that adheres and accumulates on the upper surface of the diffusion plate 4 collides with the collision surface 9 and is removed, so that it is possible to prevent the raw material from accumulating on the upper surface of the diffusion plate 4.

However, in order to prevent the original diffusion effect from being impaired and to prevent the highly sticky raw material from accumulating on the upper surface of the diffusion plate 4, the mounting position of the scraper 10 is rotated by 180 degrees. The position of the collision is not limited to the position, and the collision is performed at a position rotated by at least 180 degrees or more in the rotation direction of the diffusion plate 4 from the position where the diffusion plate 4 receives the raw material dropped from the raw material input port 1. What is necessary is just to provide the said scraper 10 so that the surface 9 may be located. Preferably, as shown in FIG. 3, a position where the raw material dropped from the raw material input port 1 is received by the diffusion plate 4 is rotated by 180 degrees in a rotation direction of the diffusion plate 4, and It is preferable to provide the scraper 10 so that the collision surface 9 is located within a range of 45 degrees from the position (indicated by a virtual line). In the illustrated embodiment, such a range of 45 degrees is, for example, that the scraper 10 projects the ribs 12 from the back surface 11 or that the direction in which the frame 14 is passed is predetermined. The reason, and even
It is set for the reason that it is not preferable to make it too close to the inlet 1 side, but it is a matter of course that the range of the mounting position is not limited to the range of 45 degrees.

The raw material dropped from the raw material input port 1 is dropped in a required range so as to be dropped into the quarter region Q on the upper surface of the diffusion plate 4. The position where the diffusion plate 4 is rotated at least 180 degrees from the position where the material is received by the diffusion plate 4 is defined as the position where the diffusion plate 4 receives and rotates the material and the position of the material located at the forefront in the rotation direction. The position at which the board 4 is rotated at least 180 degrees. Therefore, for example, from the position of the raw material located rearmost in the rotation direction, the collision surface 9
Up to the position, the diffusing plate 4 rotates close to 270 degrees. However, in any case, the raw material dropped in the quarter region Q, and the raw material adhered to the upper surface of the diffusion plate 4 because of its strong adhesiveness, is dropped anywhere in the quarter region Q. Even so, the upper surface of the diffusion plate 4 is rotated at least 180 degrees or more before colliding with the collision surface 9 of the scraper 10.

The rotation speed of the rotary shaft 3 may be variably adjusted according to the characteristics of the raw material to be sorted.
It is preferable to adjust the rotation speed of a raw material which has high adhesiveness to easily adhere to the diffusion plate 4 to a speed higher than that in a case where a normal raw material is selected.

The present invention is not limited to the above-described embodiment, and various other modifications are possible. For example, the collision surface 9 of the scraper 10 does not necessarily need to extend up and down to near the upper surface of the diffusion plate 4 as long as the lower end thereof extends substantially horizontally toward the rotation shaft 3. For example, it may be located away from the upper surface of the diffusion plate 4. This is because even if the highly adhesive raw material adheres to the upper surface of the diffusion plate 4 and is piled up, the upper surface of the piled raw material is cut off so as to be substantially horizontal,
This is because the raw material dropped from the raw material input port 1 can be placed on such a horizontal plane, so that the raw material can be effectively diffused and input onto the mesh surface 5 of the sieve. Thus, the scraper 10 may be provided with a position adjustment function that enables vertical position movement so that the distance between the lower end of the collision surface 9 and the upper surface of the diffusion plate 4 can be adjusted.

The collision surface 9 does not have to be positioned in a direction substantially perpendicular to the rotation direction of the diffusion plate 4, but is positioned in a direction intersecting the rotation direction of the diffusion plate 4 with a certain inclination angle. It may be.

The abrasion preventing plate 13 attached to the collision surface 9 is attached to a portion where the raw material attached to the upper surface of the diffusion plate 4 collides with the raw material so as to partially cover the collision surface 9. However, depending on circumstances, it may be mounted so as to cover the entire surface of the collision surface 9, or the scraper body 10a itself may be the wear-resistant plate 13 made of a cemented carbide.

The number of the ribs 12 is increased in addition to the first rib 12a and the second rib 12b so that the scraper main body 10a can sufficiently withstand the impact when the scraper main body 10a collides with the raw material. May be attached to The shape of the ribs 12 is not limited to the embodiment, but may be any shape as long as the scraper body 10a can be reinforced and supported.
When the plurality of diffusers 4, 4 are arranged side by side, the first ribs 12 a, 12 a corresponding to the respective diffusers 4, 4 may be connected and integrated.

[0037]

As described above, the present invention has the following effects.

According to the first aspect of the present invention, it is possible to prevent the raw material from being piled up on the upper surface of the diffusion plate even if the raw material has strong adhesiveness.

According to the second aspect of the present invention, in addition to the above, even if the raw material having a high tackiness is applied to the screen surface of the sieve,
It can be effectively diffused and put.

According to the third aspect of the present invention, in addition, most of the highly adhesive raw material and the like accumulated on the upper surface of the diffusion board can be removed.

According to the fourth aspect of the present invention, in addition, a raw material having high tackiness and the like can be effectively diffused onto the mesh surface of the sieve without impairing the original diffusion effect. Can be.

According to the fifth aspect of the present invention, the collision surface can be prevented from being worn down.

According to the scraper used in the diffusion charging device according to the sixth aspect, it can be attached to the frame of the diffusion charging device. It can be prevented from accumulating on the upper surface.

[Brief description of the drawings]

FIG. 1 is a front view of a diffusion injection device and a scraper for the diffusion injection device according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a side view of a main part of a conventional diffusion injection device.

FIG. 5 is a diagram corresponding to FIG. 3 of a conventional diffusion injection device.

FIG. 6 is a conceptual diagram schematically showing a problem of a conventional diffusion injection device.

[Explanation of symbols]

 K Diffusion input device 1 Raw material input port 3 Rotating shaft 4 Diffusion board 5 Mesh surface of sieve 9 Collision surface 10 Scraper 13 Wear prevention plate 14 Frame

Claims (6)

[Claims] 1. A raw material input port for inputting a raw material, a rotation shaft, and a rotation about the rotation axis, whereby the raw material dropped from the raw material input port is diffused onto a mesh surface of a sieve. And a diffusion plate to be thrown in, provided above the diffusion plate and on the side of the rotating shaft, provided with a collision surface positioned in a direction intersecting with the rotation direction of the diffusion plate, and provided with a scraper. Diffusion injection device. 2. The diffusion injection device according to claim 1, wherein a lower end of the collision surface extends substantially horizontally toward a rotation axis. 3. The diffusion injection device according to claim 2, wherein the collision surface extends up and down to near an upper surface of the diffusion plate. 4. From a position where the diffuser receives the raw material dropped from the raw material input port, in a rotational direction of the diffuser,
4. The diffusion injection device according to claim 1, wherein the scraper is provided such that the collision surface is located at a position rotated by at least 180 degrees or more. 5. 5. An abrasion prevention plate is attached to the collision surface of the scraper.
The diffusion injection device according to any one of the above. 6. A scraper which is mounted above a diffusion plate and on a side of a rotation axis thereof, comprising: a mounting means or a mounting portion for mounting to a frame of a diffusion charging device. A scraper for a diffusion charging device, comprising a collision surface against which a raw material accumulated on an upper surface of a diffusion plate collides.