JPH04327411A - Shoot for belt conveyor - Google Patents

Abstract

PURPOSE:To remove the preceding conveyed raw material accumulated in an accumulating part without labor at the switching time of conveyed raw material so as to prevent different kinds of raw material from being intermixed. CONSTITUTION:A belt conveyor 2 for performing the switching conveyance of multiple kinds of bulk raw material including high abrasive material is provided with a shoot 1 at its head part. This shoot 1 is provided with an accumulating part 5 for accumulating conveyed raw material, at a lower part in front of a conveyor head part pulley 3. The accumulating part 5 is provided with contact plates 7, 13 disposed opposedly to the head part pulley 3 in such a way as to be movable forward/backward. These contact plates 7, 13 are moved backward at the raw material conveying time so as to accumulate the conveyed raw material 21 in the accumulating part and moved forward at the raw material switching time so as to remove the preceding conveyed raw material accumulated in the accumulating part 5. This prevents the intermixture of foreign material at the following raw material conveying time.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chute for receiving bulk raw material conveyed by a belt conveyor and supplying the bulk raw material to the next belt conveyor or other equipment.

0002

2. Description of the Related Art There are multi-purpose conveyance lines that selectively convey various types of bulk raw materials. As an example, a raw material conveyance line in a steel mill will be described. In this raw material conveyance line, auxiliary raw materials such as iron ore and coal, or iron ore, coal and lime are conveyed on the same conveyor line while being switched. A chute having a structure shown in FIG. 4 is provided at the transfer section of the conveyor for conveying these raw materials.

FIG. 4 is a schematic cross-sectional view thereof. 1 is shoe
2 is a belt conveyor, and 20 indicates the bulk material being conveyed. Also, 3 is the head pulley of the belt conveyor.
, 4 is the next belt conveyor to which the raw material transfers. As mentioned above, this chute body 1 has a special structure because it must also receive abrasive iron ore. That is, if the shape of the chute body 1 is a normal shape such as a truncated pyramid, the iron ore falling from the conveyor 2 will collide with the slope of the chute body and then slide down this slope. It falls and is discharged to the next conveyor 4. For this reason, the iron ore falling from conveyor 2 collides with the shoe.
The contact surface of the main body 1 is severely abraded by the impact and is damaged in a short period of time.

[0004] Therefore, in a chute provided in a line that conveys such highly abrasive raw materials, a stage 6 is provided near the colliding part of the raw materials falling from the conveyor 2, and a stage 6 is provided in the vicinity of the colliding part of the raw materials falling from the conveyor 2. - A part called a box) 5 is formed. When this reservoir 5 is provided,
A certain amount of the raw material falling from the conveyor 2 is always deposited in the reservoir 5 and covers the wall surface of the chute body 1. As a result, the raw material falling from the conveyor 2 does not come into contact with the wall surface of the chute body 1, but slides down on the raw material that has been deposited in advance and is discharged to the next conveyor 4.

[0005]

However, in the conventional chute described above, the following problem occurs when changing raw materials.

[0006] When switching to the next raw material conveyance while the previous conveyed raw material is still piled up in the pool section 5, the previously conveyed raw material that had been piled up gets mixed into the next conveyed raw material, and the next conveyed raw material is mixed into the next conveyed raw material. reduce the quality of the raw materials produced. For example, when transporting iron ore is switched to transporting coal, a problem arises in that when the coal is pulverized in the next step, the mixed hard lumps of iron ore may damage the coal pulverizer.

[0007] In order to eliminate the above-mentioned problems,
Prior to switching the conveyed raw material, it is sufficient to remove the previously conveyed raw material accumulated in the pool 5, but in large equipment such as a raw material conveying line in a steelworks, the previously conveyed raw material (iron ore) may be removed. The amount of deposits (stones, coal, etc.) is extremely large, and removing it requires a great deal of effort and time.

[0008] The present invention provides a chute for a conveyor belt that can remove the previous type of conveyed raw material deposited in a pooled portion without requiring any labor when switching raw materials to be conveyed, and prevents mixing of different types of raw materials. The purpose is to provide

[0009]

[Means and operations for solving the problems] In order to achieve the above object, in the present invention, a head pool is provided in the reservoir.
A backing plate is arranged opposite to the Lee, and this backing plate can be moved forward and backward.

[0010] In principle, this caul plate is moved forward or backward in the following cases. The backing plate is moved back while the raw material is being transported, and the transported raw material is deposited in the pooled portion. When switching the raw material to be transported, the caul plate is moved forward to discharge the previous raw material to be conveyed that has accumulated in the pool, and then the caul plate is moved back to the original position. Next, transport of the next raw material is started.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic sectional view showing an embodiment of the present invention. In FIG. 1, the same components as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted. In this example,
A backing plate 7 is disposed in a suspended state in front of the head pulley 3 of the belt conveyor. This backing plate 7 is rotatably attached to a shaft 8 extending over the upper part of the chute body 1 near the side plate. Note that the structure for rotating the cover plate 7 may be such that the cover plate 7 is fixed to the shaft 8 and the shaft 8 is rotated. Further, a fluid cylinder 9 is attached to the side plate of the chute body 1 of the backing plate 7 as a means for moving the backing plate 7 back and forth. The fluid cylinder 9 is connected to the backing plate 7 and the pedestal 12 by pins 10 and 11. Therefore, by operating the cylinder 9, the backing plate 7 can be advanced to a desired position in a fan-shaped trajectory. Further, when the cylinder 9 is reversely operated, the backing plate 7 returns to its original position near the side plate of the chute body 1.

FIG. 1 also serves as a diagram showing the operation status of the cover plate 7 when changing the conveyed material. This patch plate 7
We will explain the operation of . During transportation of the raw material, the backing plate 7 is moved back to the vicinity of the side plate of the chute body 1, so that the transported raw material is accumulated in the pool portion 5. Therefore, when switching the raw materials to be transported, if the cylinder 9 is operated to move the backing plate 7 forward (indicated by the two-dot chain line in the figure), the accumulating portion 5
The previous type of raw material 21 accumulated on the conveyor 4 is discharged to the next conveyor 4, and the foreign matter in the accumulating portion 5 is swept away. Next, the cylinder 9 is operated in reverse to move the backing plate 7 backward, and transport of the next raw material is started. Therefore, the previously conveyed raw material will not be mixed into the next conveyed raw material.

FIG. 2 is a schematic cross-sectional view showing another embodiment of the present invention. In FIG. 2, the same components as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted. Also in this embodiment, a backing plate 13 is provided in front of the head pulley 3 of the belt conveyor.
is placed in a suspended position. This backing plate 13 is attached to a shaft 8 extending over the top of the chute body 1, and rollers 14 are provided at both ends of the shaft 8. The rollers 14 are placed so as to be able to roll on two guide rails 15 provided on the upper part of the chute body 1 located on both sides of the conveyor 2. The abutment plate 13 is fixed to a push frame 16, and this push frame 16 is connected to the fluid cylinder.
It is connected to 9.

[0014] Therefore, this patch plate 13
By activating , it can be moved in parallel and moved forward or backward to a desired position. The operation of the abutting plate 13 at the time of switching the material to be transported is performed in the same manner as in the case of FIG.

Regarding the operation of the caul plates 7 and 13 in FIGS. 1 and 2, during the conveyance of raw materials, the caul plates 7 and 13 are moved back to deposit the conveyed raw materials in the accumulating portion 5, and the conveyed raw materials collide. - Although the explanation has been given only for the case of covering the contact surface of the toe body 1, the usage of the backing plates 7, 13 is not limited to the above method.

FIG. 3 is an explanatory diagram of another way of using the chute of FIG. 1. The configuration of the device has already been explained with reference to FIG. 1, so a description thereof will be omitted. When conveying a relatively soft raw material such as coal, even if the raw material sent from the conveyor 2 is dropped directly onto the caul plate 7, the degree of wear on the caul plate 7 is not so great. When conveying such raw materials, if the backing plate 7 is moved forward, the conveyed raw materials will not accumulate in the reservoir 5 of the chute body, so if the raw materials to be conveyed next are hard materials such as iron ore, In this case, simply by retracting the backing plate 7, it is possible to immediately switch to the next material to be transported. Therefore, the operation of removing the accumulated raw material when switching raw materials can be omitted, and the raw material conveyance work can be carried out efficiently. Note that the backing plate 13 in the case of FIG. 2 can be used in exactly the same way as in the case of FIG.

[0017]

[Effects of the Invention] In the chute of the present invention, a patch plate is disposed in the pool area facing the head pulley, and this patch plate is movable back and forth, so when changing the conveyed material. In this case, by moving the caul plate forward, the previously transported material accumulated in the pool can be discharged. Therefore, when switching raw materials to be transported, it takes effort to remove the accumulated raw materials in the pooled portion, and mixing of different kinds of raw materials does not occur.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing one embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view showing another embodiment of the present invention.

FIG. 3 is an explanatory diagram of another way of using the chute in FIG. 1;

FIG. 4 is a schematic cross-sectional view of a conventional chute provided at a transfer section of a conveyor for conveying bulk raw materials.

[Explanation of symbols]

1 Chute body 2 Belt conveyor 3 Belt conveyor head pulley 5 Accumulation part 7,13　Packing plate 9 Fluid cylinder 20 Bulk raw materials being transported

Claims (1)

[Claims] 1. A chute for receiving bulk raw materials conveyed from a belt conveyor, the chute having a reservoir portion for depositing the bulk raw materials at the front lower part of the head pulley of the belt conveyor. 2. A chute for a belt conveyor, characterized in that the accumulating portion is provided with a backing plate that is disposed opposite to the head pulley and is movable back and forth.