JP2569792Y2 - Aggregate storage hopper - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aggregate storage hopper, for example, an aggregate storage device used in an asphalt plant.

[0002]

2. Description of the Related Art A hopper type storage device is used as one of the aggregate storage devices of an asphalt plant.
This aggregate storage hopper uses a shovel loader to scoop up crushed stones, sand, etc. stored in each type of aggregate storage and transport it to the hopper. A predetermined amount is paid out and supplied to a dryer which is a heating and drying device. The horizontal cross section of the hopper is substantially rectangular, and the opening is narrower as it goes down.

[0003] When storing aggregate in this type of hopper, as the aggregate becomes finer and the aggregate becomes moist, it tends to cause arching near the discharge port. For sand hoppers for storing finer sand, the side angle is more than 45 degrees, and for sand hoppers for storing finer sand, the outlet angle is longer for sand hoppers for storing finer sand. As easy to discharge. A belt feeder consisting of a belt conveyor or an apron feeder with a corrugated steel plate attached to an endless chain is placed below the outlet at the bottom of the hopper opening. To supply.

[0004]

However, since the conventional aggregate storage hopper is designed so that the aggregate can easily flow, when the aggregate is pulled out from the hopper by a belt conveyor or the like, FIG. As shown in FIG. 2, if the aggregate is a normal aggregate, the force F ₁ of dropping the aggregate due to its own weight is used.
There sequentially flows out aggregate from the front portion 1a of the hopper 1 to be greater than the force F ₂ to pull out the bone material in the horizontal direction, aggregate portion indicated by oblique lines in the rear portion 1b flows out and doing so at the end.

[0005] Therefore, if the shovel loader replenishes the aggregate with the decrease in the storage amount of the hopper 1, the aggregate of the hatched portion of the rear portion 1b of the hopper 1 will not be dispensed forever and will be substantially eliminated. This part has little role in storage.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide an aggregate storage hopper capable of uniformly discharging aggregate from the entire area of the outlet of the aggregate storage hopper.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an aggregate storage hopper in which a belt conveyor is arranged below a discharge port at the bottom of an opening, wherein the hoppers are located on both sides of the belt conveyor. A flow control plate of an appropriate width for partially restricting the flow of the material flowing along the side wall is provided on the inner side surface of the side wall along the belt traveling direction of the belt conveyor.

[0008]

According to the present invention, when the belt conveyor is driven to pull out the aggregate from the hopper, the aggregate which is going to flow from top to bottom along the hopper side wall is distributed to the hopper side wall as shown in FIG. The flow is difficult to flow because it is obstructed by the provided flow control plate, and the fall of the aggregate due to its own weight is partially restricted. In this way, the aggregate F can be pulled out evenly from the entire area of the outlet of the hopper by balancing the force F _{1 for} dropping the aggregate by its own weight and the force F ₂ for pulling the aggregate horizontally by the belt conveyor. Can be.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

The hopper 1 for temporarily storing the aggregate has a substantially rectangular horizontal cross section. The opening is narrowed by inclining the side wall as it goes downward, and a belt conveyor 3 for pulling out the aggregate is provided below the outlet 2. (Or apron feeder). Then, the aggregate pushed out by its own weight of the hopper 1 is received by the belt conveyor 3, and the belt conveyor 3 is driven at a predetermined speed to draw out the aggregate from the outlet 4 formed in the front wall of the hopper 1.

Reference numeral 5 denotes a flow control plate for controlling the flow of the aggregate provided on the inner surfaces of both side walls 6 of the hopper 1. The flow control plate 5 controls the flow of the aggregate flowing along the hopper side wall. In order to be able to partially limit, a plate body having an appropriate width is attached from the front end to the rear end near the outlet 2 of the side wall 6 along the running direction of the belt conveyor 3.

As shown in FIG. 3, a method for mounting the flow control plate 5 is to form a height position adjusting slot 8 in the mounting piece 7 in the vertical direction, and to form the height position adjusting slot 8 in the height direction. It is preferable to attach the hopper to the hopper side wall 6 through the fastener 9 so that the height can be adjusted by sliding the hopper up and down. The width and the mounting position of the flow control plate 5 may be appropriately determined according to the type of the aggregate and the capacity of the hopper 1 while checking the flow of the aggregate through experiments and the like. Further, when the flow control plate 5 is mounted so that the height position can be adjusted, the flow resistance of the aggregate can be increased as the flow control plate 5 approaches the lower belt conveyor 3 side.

When the belt conveyor 3 is driven to start pulling out the aggregate from the hopper 1, the hopper 1
Aggregate inside also flows down. At this time, the flow control plate 5
There Bone material from the front portion 1a of the hopper 1 to the force F ₁ to be falling due to the weight of the aggregate if not installed is greater than the force F ₂ to pull out the bone material in the horizontal direction is a sequential flow out, Since the flow control plate 5 is provided, a part of the aggregate falling along the side wall 7 is blocked as shown in FIG. As a result, it is possible to reduce the force F ₁ which aggregate flows near the side wall 7 is caused friction of the aggregate to each other to change the flow direction to the central portion side, tries to fall due to the weight of the aggregate. The aggregate also from the force F ₁ and the front portion of the discharge port 2 as the aggregate balance being force F ₂ to draw in the horizontal direction shown in FIG. 5 and the rear portion to be dropped by the weight of aggregate Can be withdrawn. Therefore, the aggregate can be discharged from the entire area of the hopper 1, and the storage volume can be effectively used.

In the above-described embodiment, the flow control plate 5 is attached from the front end near the discharge port 2 of the side wall 6 to the rear end. However, the present invention is not limited to this. balance from falling status of the aggregate according to the type of the aggregate storing and structure around it is to change, the force F ₂ to draw a force F ₁ and aggregate to be falling due to the weight of the aggregate in the horizontal direction The flow control plate 5 is mounted at an appropriate position for taking the flow, the flow control plate 5 is divided and mounted so that the height position can be adjusted separately, and the width of the flow control plate 5 is also changed depending on the mounting position. Various changes can be made without departing from the scope of the present invention.

[0015]

As described above, according to the present invention, the flow control plates 5 for restricting the falling flow of the aggregate are provided on both side walls 6 near the discharge port 2 of the hopper 1 and the aggregate falls by its own weight. A force F that adjusts the force F ₁ to be used to pull out the aggregate in the horizontal direction.
_{Since the} balance between the _two is achieved, the aggregate can be almost uniformly dispensed from the entire area of the hopper 1 without arching, and the storage volume can be used effectively.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of an aggregate storage hopper according to the present invention.

FIG. 2 is a partially cutaway front view of FIG. 1;

FIG. 3 is a perspective view showing a mounting structure of a flow control plate.

FIG. 4 is a diagram illustrating the flow state of the aggregate in the aggregate storage hopper according to the present invention.

FIG. 5 is a view illustrating the flow state of the aggregate in the hopper for storing aggregate according to the present invention.

FIG. 6 is a diagram illustrating a flow state of aggregate in a conventional aggregate storage hopper.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 ... Hopper 1a ... Hopper front part 1b ... Hopper rear part 2 ... Discharge port 3 ... Belt conveyor 5 ... Flow control plate

Claims (1)

(57) [Scope of request for utility model registration] An aggregate storage hopper in which a belt conveyor is arranged below a discharge outlet at the bottom of an opening, wherein a flow of material flowing along the side wall is partially applied to inner side surfaces of hopper side walls located on both sides of the belt conveyor. An aggregate storage hopper, wherein a flow control plate having an appropriate width to be restricted is disposed along a belt traveling direction of a belt conveyor.