JPH0737844Y2 - Aggregate drawer gate device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aggregate drawing gate device provided in each aggregate stockyard.

[0002]

2. Description of the Related Art Conventionally, in a ready-mixed concrete manufacturing plant, when an aggregate is pulled out from an aggregate pull-out gate device provided in each aggregate stock yard, as shown in FIG. 1 is a fan-shaped gate 2 for cutting out aggregates provided in the lower end discharge port of the shaft 1.
Is rotated in the opening direction around the center to open the door, and the aggregate in the aggregate pull-out hopper 1 is cut out and dropped on the aggregate transport conveyor 5. In the case of fine aggregate, the vibration vibrator 6 is also activated.

When the cutout of the aggregate onto the aggregate conveyer 5 is completed, the fan-shaped gate 2 for cutting out the aggregate is rotated in the closing direction about the shaft 4 by the air cylinder 3 to close the door. In the case of fine aggregate, the vibration vibrator 6 is also stopped.

[0004]

In the conventional aggregate drawing gate apparatus shown in FIG. 4, the diameter of the lower end discharge port of the aggregate drawing hopper 1 is determined by the belt width of the aggregate conveying conveyor 5. Depending on the conditions such as the particle size of the aggregate, the difference in the production area, the water content, etc., it may be difficult to flow out from the lower end discharge port of the aggregate drawing hopper 1 to the aggregate conveying conveyor 5,
Aggregate spills from the aggregate transport conveyor, or the amount of transport to the downstream side in the transport direction cannot be maintained at a constant amount commensurate with the transport capability of the aggregate transport conveyor.

In addition, depending on the aggregate, arching or the like is caused in the lower end discharge port of the aggregate draw-out hopper 1, and cutting of the aggregate from the lower end discharge port of the aggregate draw-out hopper to the aggregate conveyer becomes unstable. There was a problem. The present invention has been proposed in view of the above problems, and the object thereof is to smoothly cut out the aggregate from the lower end discharge port of the aggregate drawing hopper to the aggregate conveying conveyor. Also, it is possible to provide an aggregate withdrawing gate device that can prevent the cut-out aggregate from spilling from the aggregate transport conveyor and can maintain the transport amount to the downstream side in the transport direction at a constant amount corresponding to the transport capability of the aggregate transport conveyor. And there is a point.

[0006]

In order to achieve the above object, the present invention provides an aggregate pull-out gate device provided in each of the aggregate stockyards, and provided in each of the aggregate stockyards. A large-diameter outlet is provided at the lower end of the aggregate pull-out hopper, and a fan gate for aggregate cutting that opens and closes the lower-end outlet is provided in the lower-end outlet, and is arranged below the lower-end outlet of the aggregate pull-out hopper. A pair of side skirts located on both sides of the installed aggregate transport conveyor and the downstream end of each side skirt in the aggregate transport direction are connected to each other to convey the aggregate from the aggregate transport conveyor. And a flow rate adjusting partition plate that forms a passage having a conveying cross-sectional area corresponding to the above, is attached to the lower part of the aggregate drawing hopper so as to be able to move up and down.

[0007]

The aggregate pull-out gate device of the present invention is constructed as described above, and the side skirts and the flow rate adjusting partition plate are lowered to position the side skirts on both sides of the aggregate conveying conveyor. The flow rate adjusting partition plate is located above the aggregate conveying conveyor to form a passage having a conveying cross-sectional area corresponding to the conveying ability of the aggregate conveying conveyor between the flow rate adjusting partition plate and the aggregate conveying conveyor, and then the bone. The fan-shaped gate for cutting out material opens the lower end opening of the aggregate drawing hopper, and cuts out the aggregate in the aggregate drawing hopper onto the aggregate conveying conveyor. At this time, if the cut-out amount of the aggregate is larger than the carrying capacity of the aggregate conveyer, the cut-out aggregate is placed in the flow rate adjusting space surrounded by each side skirt, the flow rate adjusting partition plate and the aggregate conveyer. While being temporarily retained, it is conveyed to the downstream side in the conveying direction via a passage formed between the flow rate adjusting partition plate and the aggregate conveying conveyor. At that time, each side skirt prevents the excess aggregate in the flow rate adjusting space from spilling from the aggregate transport conveyor, and the passage is used to convey the amount of transport to the downstream side in the transport direction of the aggregate transport conveyor. Hold a fixed amount that matches your ability. Further, when the cutout of the aggregate is completed, the lower end opening of the aggregate pull-out hopper is closed by the aggregate-shaped fan gate. When the aggregate in the flow rate adjusting space becomes empty, each side skirt and the flow rate adjusting partition plate are raised.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Next, an aggregate drawing gate device of the present invention is shown in FIG.
Describing one embodiment shown in FIG. 3, 7 is an aggregate drawing hopper provided in each of the aggregate stockyards, and a discharge port having a large diameter is provided at the lower end of the aggregate drawing hopper 7. ing. 8 is a fan-shaped gate for cutting out aggregate for opening / closing the lower end discharge port, 10 is a shaft for pivotally supporting the fan-shaped gate for cutting out aggregate 8 in the lower end discharge port, and 9 is a fan-shaped gate for cutting out aggregate 8 With an air cylinder interposed between the aggregate drawing hopper 7 and the air cylinder 9, the air cylinder 9 is operated in the contracting direction, and the aggregate cutting fan gate 8 is rotated upward about the shaft 10 to move the aggregate drawing hopper 7
The lower end opening of the aggregate drawing hopper 7 is closed by operating the air cylinder 9 in the extending direction and rotating the aggregate cutting fan gate 8 downward about the shaft 10. ing.

Reference numeral 15 denotes an aggregate conveyer arranged below the lower end discharge port of the aggregate pull-out hopper 7, 11 denotes a pair of side skirts located on both sides of the aggregate conveyer 15, 14
A flow rate adjusting partition that connects the downstream end of each side skirt 11 in the aggregate conveying direction to form a passage having a conveying cross-sectional area corresponding to the conveying ability of the aggregate conveying conveyor 15 with the aggregate conveying conveyor 15. A plate, 7a is a bracket provided on the aggregate drawing hopper 7, 11a is a bracket provided on the side skirt 11, and 12 is an air cylinder interposed between the brackets 7a and 11a. The air cylinder 12 is operated in the contracting direction,
Each side skirt 11 and the flow rate adjusting partition plate 14 are raised, the air cylinder 12 is operated in the extending direction, and each side skirt 11 and the flow rate adjusting partition plate 14 are lowered. Reference numeral 13 is a vibrator provided in the aggregate drawing hopper 7.

Next, the operation of the aggregate drawing gate device shown in FIGS. 1 to 3 will be specifically described. When the aggregate is cut out from the aggregate pull-out hopper 7 to the aggregate conveyer 15,
First, the air cylinder 12 is operated in the extension direction to lower each side surface skirt 11 and the flow rate adjusting partition plate 14 so that each side surface skirt 11 is positioned on both sides of the aggregate conveying conveyor 15 and the flow rate adjusting partition plate 14 is moved. Aggregate conveyor 1
5 is provided above the flow control partition plate 14 and the aggregate conveying conveyor 15 to form a passage having a conveying cross-sectional area suitable for the conveying ability of the aggregate conveying conveyor 15.

Next, the air cylinder 9 is operated in the contracting direction, and the aggregate cutting fan gate 8 is rotated upward about the shaft 10 to open the lower end opening of the aggregate drawing hopper 7 to open the aggregate drawing hopper 7. The aggregate inside is dropped and cut out onto the aggregate conveying conveyor 15. When the aggregate is fine aggregate, the vibrator 13 is operated to accelerate the outflow of the aggregate.

At this time, if the amount of cut-out aggregate is larger than the carrying capacity of the aggregate conveyer 15, the cut-out aggregate is surrounded by each side skirt 11, the flow rate adjusting partition plate 14, and the aggregate conveyer 15. While temporarily staying in the flow rate adjusting space, the flow rate adjusting partition plate 14 and the aggregate conveying conveyer 15 are conveyed through a passage having a conveying sectional area corresponding to the conveying ability of the aggregate conveying conveyer 15. Transport to the downstream side in the direction. At this time, each side skirt 11 is formed between the flow rate adjusting partition plate 14 and the aggregate transporting conveyor 15 to prevent excess aggregate in the flow rate adjusting space from spilling from the aggregate transporting conveyor 15. The passage holds the amount of conveyance downstream in the conveying direction at a constant amount corresponding to the conveying capacity of the aggregate conveyer 15.

After the cutting of the aggregate is completed, the air cylinder 9 is operated in the extending direction to extract the aggregate-shaped fan gate 8.
Is rotated downward about the shaft 10 to close the lower end opening of the aggregate drawing hopper 7, and at the same time, the vibrator 13 is stopped. And each side skirt 11 and flow rate adjusting partition plate 1
When the aggregate in the flow rate adjusting space surrounded by 4 and the aggregate conveying conveyer 15 becomes empty, the air cylinder 12 is operated in the contracting direction, and each side skirt 11 and the flow rate adjusting partition plate 1 are operated.
Increase 4 and.

[0014]

EFFECTS OF THE INVENTION Since the aggregate pull-out gate device of the present invention is provided with the discharge port having a large diameter at the lower end of the aggregate pull-out hopper as described above, arching or the like is caused in the lower-end discharge port of the aggregate pull-out hopper. Therefore, it is possible to smoothly cut out the aggregate from the lower end discharge port of the aggregate drawing hopper to the aggregate conveying conveyor.

Further, each side skirt and the flow rate adjusting partition plate are lowered so that each side skirt is positioned on both sides of the aggregate transporting conveyor, and the flow rate adjusting partition plate is positioned above the aggregate transporting conveyor. A passage having a conveying cross-sectional area corresponding to the conveying capacity of the aggregate conveying conveyer is formed between the adjusting partition plate and the aggregate conveying conveyer, and then the lower end opening of the aggregate extracting hopper is opened by a fan gate for aggregate cutting. , The aggregate in the aggregate pull-out hopper is cut out onto the aggregate conveyer. At this time, if the cut-out amount of the aggregate is larger than the carrying capacity of the aggregate conveyer, the cut-out aggregate is placed in the flow rate adjusting space surrounded by each side skirt, the flow rate adjusting partition plate and the aggregate conveyer. While temporarily staying, since it is transported to the downstream side in the transport direction via a passage formed between the flow rate adjusting partition plate and the aggregate transport conveyor, while preventing the spillage of the cut aggregate from the aggregate transport conveyor,
It is possible to maintain the amount of conveyance to the downstream side in the conveying direction at a constant amount corresponding to the conveying capacity of the aggregate conveyer.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an aggregate drawing gate device of the present invention.

FIG. 2 is a plan view showing a side skirt and a flow rate adjusting partition plate of the aggregate drawing gate device.

FIG. 3 is a front view of the side skirt and a flow rate adjusting partition plate.

FIG. 4 is a side view showing a conventional aggregate drawing gate device.

[Explanation of symbols]

 7 Aggregate drawer hopper 7a Bracket 8 Aggregate cutting fan gate 9 Air cylinder 10 Shaft 11 A pair of side skirts 11a Bracket 12 Air cylinder 13 Vibrator 14 Flow rate adjusting partition plate 15 Aggregate conveyor

Claims (1)

[Scope of utility model registration request] 1. An aggregate drawing gate device provided in each of the aggregate stockyards, wherein an aggregate outlet hopper provided in each of the aggregate stockyards is provided with a discharge port having a large diameter. A fan-shaped gate for cutting out the aggregate that opens and closes the lower end outlet is provided in the lower end outlet,
A pair of side skirts located on both sides of the aggregate conveying conveyor disposed below the lower end discharge port of the aggregate pulling hopper, and the aggregate conveying by connecting the downstream end of each side skirt in the aggregate conveying direction. An aggregate characterized in that a flow rate adjusting partition plate forming a passage having a conveying cross-sectional area corresponding to the conveying ability of the aggregate conveying conveyor is attached to the lower part of the aggregate extracting hopper so as to be able to move up and down. Drawer gate device.