JP3360392B2 - Adhesive load peeling device for belt conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attached load separating device provided on a belt conveyor for conveying powdery or granular load such as pulverized coal.

[0002]

2. Description of the Related Art As shown in FIG. 2, a belt conveyor 1 for conveying coal coal provided in a coal-fired power plant or the like passes through a connecting portion 5 from a coal storage tank 3 to a hopper 4 by a girder 2 having a truss structure. It is constructed in such a manner that it is extended so as to be inclined by the building 6 and the struts 7 so that the head side becomes higher. At the position of the head pulley 8 of the belt conveyor 1, a water jet nozzle, a brush, and the like are provided for dropping coal powder remaining on the belt without being discharged at the transport end.

[0003]

The pulverized coal adhering to the belt cannot be completely removed by a water jet nozzle or a brush, and thus tends to remain as a thin film on the mounting surface. The adhering pulverized coal may be separated from the belt and fall to the ground due to contact with the return roller during the return or the like. Therefore, in the related art, the girder 2 is provided with a fall prevention plate for receiving the coal. However, since the fallen coal accumulates on the fall prevention plate as the transport progresses, it is necessary to perform a dangerous and difficult work in which the worker periodically climbs on the girder 2 to collect the fallen coal. there were.

Accordingly, the present invention has been devised in order to newly provide an attached load removing device capable of sufficiently removing the attached load on the belt so as not to remain on the return side.

[0005]

Means for Solving the Problems] deposition load peeling apparatus of a belt conveyor according to the present invention for achieving the above-belts
The length of the belt to support the return belt of the conveyor
Return rows arranged at predetermined intervals in the direction
And one return roller and another adjacent litter
Roller with a protrusion on the outer circumference
Stroke driven by friction contact with the back side of the belt
Shooting roller and the other return roller above and adjacent to it
It is located between another return roller and has a protrusion on the outer circumference.
It is driven to rotate by friction contact with the back side of the return side belt.
A second striking roller, and the first and second striking rollers
Rollers project from adjacent return rollers
Long protrusions that extend below the tangent, and similarly
Extension that is shorter than the
It consists of a combination with the protruding portion .

[0006]

According to the present invention, the first and second striking rollers are:
The belt adhered to the belt mounting surface is vibrated or deformed by intermittent striking by the respective projecting portions , and is rotated or driven by frictional contact with the back surface of the return belt. Is forcibly peeled off. For more information,
With the rotation of the turn belt, the first and second striking rollers
When each protrusion hits the back of the return belt, each protrusion
Length is different from large, medium and small, so it corresponds to the amount of protrusion
Of the return belt
The forced vibration or deformation becomes complex and variable,
The degree and amount of sticking of the load (pulverized coal, etc.) attached to the
It can adapt to various aspects of the fabric.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of an apparatus for peeling off an attached load of a belt conveyor according to the present invention, and shows a case where the present invention is applied to a belt conveyor for conveying pulverized coal. The attached load peeling device is connected to the return side 11 of the belt conveyor.
, Two striking rollers 13 having projections 12 on the outer periphery,
14 are provided.

A return roller 15 is arranged on the return side 11 at a predetermined interval, and supports a belt 16 turned up from a head pulley (not shown) so that the belt 16 runs with the mounting surface 17 down. ing. One of the return rollers 15a is located above the level L of the other return roller 15b by a predetermined height h, and the striking rollers 13 and 14 are connected to the return rollers 15a.
, Respectively, on the opposite side (side of the belt back surface 22) with the belt 16 interposed therebetween.

The first striking roller 13 on the upstream side is composed of a columnar base circle portion 18 and two types of projecting portions 12a and 12b. The protruding portions 12a and 12b extend radially, and a total of four protruding portions 12a extending longer and protruding portions 12b shorter than the protruding portions 12a are arranged alternately and at equal intervals. The protruding portion 12c provided on the downstream second impact roller 14 has:
It has an intermediate projection length between the two types of projections 12a and 12b, and a total of three projections are formed at regular intervals radially from the base circle portion 19. The shape of these protruding portions 12 may be a thick plate shape that is continuous in the axial direction, or may be a prismatic shape that is independent at an interval in the axial direction. Further, the rotating shafts 20, 21 of the respective impact rollers 13, 14 are rotatably supported by a girder (not shown) and are supported by a belt (indicated by a two-dot chain line 16a in the figure) when supported only by the return roller 15. It is held at a position where the base circle portions 18 and 19 come into contact with the back surface 22. That is, each impact roller 13, 1
4, the outer periphery is brought into frictional contact with the traveling side of the belt 16 on the return side to rotate in the same direction (indicated by an arrow B in the figure), and the protruding portion 12 periodically hits the back surface 22 of the belt 16. By vibrating or deforming by an amount corresponding to the protruding length, the coal powder C adhered to the mounting surface 17 is peeled off. The tip 23 of the protruding portion 12 is in contact with the belt 1
6 is formed of a resin material or the like having an appropriate elasticity so as not to damage the back surface 22 of the base material 6.

[0011] Below the upper return roller 15a, the pulverized coal C peeled off by the striking rollers 13, 14 is provided.
A fallen coal recovery hopper 24 is provided. The decarbonization recovery hopper 24 is opened upward in a size corresponding to the range of the location of the striking rollers 13 and 14, is formed in a downward constriction, and has a decarbonization C at its lower end (not shown).
₀ can be stored temporarily.

Next, the operation of this embodiment will be described.

When the coal C is conveyed on the carrier side by the belt rotation, the striking rollers 13, 14 are contacted and rotated by the movement of the belt 16 on the return side. The back surface 22 of the belt 16 stretched between them is hit at each cycle. The pulverized coal C remaining without being removed at the transport end thereby vibrates so that the belt 16 bends near the upper return roller 15a.
It is forcibly peeled off from the mounting surface 17.落炭C ₀ dropped from belt 16, after being temporarily stored is collected in落炭collection hopper 24, is carried out by separately etc. track are utilized with coal C conveyed to the normal.

As described above, the striking rollers 13 and 14 having the protruding portions 12 are provided on the opposite side of the return roller 15,
Since the periodic impact is applied from the back surface 22 of the belt 16, the coal dust C adhered to the mounting surface 17 of the belt 16 can be sufficiently separated and collected. That is, the amount of adhering pulverized coal C, which may fall, is extremely small even if it remains, and it is possible to completely abolish the conventionally required decarbonization prevention plate, or to make it harmful even if the decarbonization prevention plate is provided just in case. It is possible to abolish the manual labor of collecting lost coal, which was dangerous heavy labor without accumulating on the ground, thereby improving safety and reducing labor. In addition, by providing this attached load peeling device near the head pulley, it is possible to omit the conventional brush and water jet nozzle, and the need for a water supply / drainage system is eliminated, thereby improving the surrounding environment and simplifying equipment. Is made.

In this embodiment, the striking roller 1
Since the belt driving on the return side is used for the rotational driving force of the rollers 3 and 14, the driving source for the impact rollers 13 and 14 is not separately required, and the configuration can be energy saving. In addition, since the impact rollers 13 and 14 are provided with two protrusions 12 having different lengths and phases, the forced vibration or deformation of the belt 16 becomes complicated and varied, and various aspects of the degree of adhesion and distribution of the pulverized coal are provided. Can be adapted to.

The configuration of the striking roller is not limited to the present embodiment, and the number of projecting portions, projecting length and the like should be set according to the scale of the belt conveyor and the like . The number of impact rollers is not limited to two , but may be three or more . Further, in the present embodiment, the belt conveyor for conveying the coal powder is used, but the present invention can naturally be applied to a belt conveyor for conveying other powdery and granular loads.

[0017]

In summary, according to the present invention, the first and second embodiments
Each projecting part of the second striking roller is
When hitting, the length of each protrusion is different from large, medium and small
The belt vibrates or deforms by an amount corresponding to the amount of protrusion
However, the forced vibration or deformation of the return side belt is complicated and unusual.
Therefore, the load attached to the belt can be sufficiently peeled off, and an excellent effect of preventing the load from dropping during return can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of an apparatus for peeling off a load on a belt conveyor according to the present invention.

FIG. 2 is a side view showing the entire belt conveyor.

[Explanation of symbols]

 Reference Signs List 11 Return side of belt conveyor 12 Projection part 13, 14 Striking roller 15 Return roller 16 Belt 22 Back surface

Claims (1)

(57) [Claims] The belt on the return side of the belt conveyor is supported.
To be held at predetermined intervals in the longitudinal direction of the belt
Multiple return rollers, one return roller and this
Located between other return rollers adjacent to the outer circumference
Has a protruding part and comes into frictional contact with the back side of the return belt
A first striking roller driven to rotate, and the other return roller
Roller and another return roller adjacent to it
With a protruding part on the outer circumference and
A second striking roller driven to rotate by frictional contact;
Each of the protrusions of the first and second striking rollers is
Longer than the tangent connecting the rollers
A protrusion and a similarly extended protrusion
Combination with a protrusion extending to an intermediate length between them
Attached load peeling device for a belt conveyor, characterized in that Ranaru.