JPS61248825A - Temporary storing device for conveyed load - Google Patents

Abstract

PURPOSE:To shorten a span of staying time inside a hopper, by dumping a conveyed load out of a feed conveyor into a relatively small capacity hopper upon selection, while selecting a dumping direction to the other hopper according to what the specified quantity of the conveyed load is stored in one hopper. CONSTITUTION:A conveyed load is dumped in a hopper of storage tanks 4 and 5 from a delivery end 6 via feed conveyors 1 and 2, making the load drop on a conveyed surface 19a of a selector conveyor 19, and it is further conveyed in a right direction by this conveyor 19 and dropped through a projection port 9 of a hopper 7 at the right. With this constitution, subsiding sand is gradually stored inside the hopper 7, and when a stored quantity reaches the upper limit, it is detected by a selecting device 21 whereby a dumping direction of the selector conveyor 19 is selected by a reverse command signal out of a control part 24, thereby starting the projection of the subsiding sand toward a hopper 8 at the left. The storage quantity of these hoppers 7 and 8 is relatively small in capacity so that it is made almost the same as the loading capacity of a truck 18, thus storage and delivery are carried out alternately between these hoppers 7 and 8.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for temporarily transporting materials such as sand and sludge that have been raked up and transported from a settling pond, etc., in order to load them onto a truck or the like. The present invention relates to a temporary storage device for storing food in a hopper, and in particular, to a temporary storage device that can shorten residence time in a hopper to eliminate spoilage and the like, and can be continuously carried out.

[Prior Art] Generally, sludge such as sludge and human waste is washed in a sewage treatment facility and then transported to a predetermined location, such as a landfill, by a truck or the like.

In other words, the sand, sludge, etc. lifted from the settling basins installed in sewage treatment facilities are unhygienic, so they must be washed first.
The washed sand and residue are transported to a predetermined temporary storage device and stored therein, and this stored material is gradually unloaded by truck or the like and transported to a predetermined destination. In this case, the washed sediment is transported to a temporary storage device using a conveyor,
This was received in a hopper and then shipped in predetermined amounts onto trucks, etc.

[Problems to be Solved by the Invention] By the way, in the conventional temporary storage device, 1M hopper is provided for one conveyor, so the capacity of the hopper is required to be relatively large. It was.

For this reason, there is a large amount of sediment in this large hopper.

The residue, etc. will be stored, and even though it is gradually shipped by truck, the amount shipped at one time is small, and the residence time of the stored material in the hopper becomes longer, and as a result, the stored material may rot. This caused a foul odor and was unhygienic.

Furthermore, since a large amount of stored material is stored in one hopper, the stored material in the lower layer becomes hard due to its weight, making it difficult to discharge during shipping, and in some cases, continuous discharge is not possible.

Furthermore, since the hopper itself is large, not only does it require a large site area, but it also has to be installed outdoors, which detracts from its aesthetic appearance.

Additionally, during maintenance, the hopper stopped operating, so truck shipping operations had to be suspended as well.

Therefore, it is conceivable to reduce the capacity of the hopper and provide a plurality of hoppers, but in this case, each hopper must be provided with a conveyor with a long conveyance path, which is not economical.

[Object of the Invention] The present invention focuses on the above-mentioned problems and has been devised to effectively solve the problems.

An object of the present invention is to provide a plurality of relatively small-capacity hoppers and to switch the conveyed material into these hoppers to input the material, thereby shortening the residence time in the hopper, eliminating spoilage, etc., and making it possible to carry out continuous transport. The present invention provides a temporary storage device for transported items.

[Summary of the Invention] The configuration of the present invention that achieves the above object includes forming a plurality of relatively small capacity hoppers, and providing a switching means for switching and charging the conveyed material from the conveyor into the hopper,
Furthermore, by forming a switching means that switches the loading direction to the other hopper when a predetermined amount of material is stored in one hopper, it is possible to perform continuous unloading operations using trucks without complicating the equipment. The main idea is to reduce the residence time in the hopper.

[Embodiment] A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a plan view showing a preferred embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II--II in FIG.

As shown in the figure, 1.2 is a conveyor, and on the upstream side of this conveyor 1.2, there is a carry-out conveyor (not shown) for carrying out the washed sediment or washed residue scraped from the sand and residue washing tank. 3 are connected. The above conveyor 1.
2 is made of, for example, a sand inch conveyor or a tray conveyor, and is provided to stand upwardly toward the temporary storage device @ 4.5 located at a high place, and its discharge end 6 is connected to the storage device 4.
I am facing ゜5. In the illustrated example, since the conveyed materials, sand and sediment, must be mixed and conveyed in separate systems, a conveyor for sand settling 1 and a conveyor for sand processing 2 are provided, and these conveyors are separately provided. Storage devices 4 and 5 are connected to the storage devices 4 and 5, respectively. Since these plurality of transport conveyors 1.2 and storage devices 4.5 each have the same type of construction, the temporary storage device 4 for sand settling will be explained hereafter.

This storage device 4 is provided with a plurality of hoppers 7.8 (in the illustrated example, two hoppers) adjacent to each other, which are formed into a cylindrical shape with a rectangular cross section and are open at the upper and lower sides. The input ports 9' and 10 of these hoppers 7.8 are located below the conveyor 1, and the lower discharge port 11.12 has a door 13.14 that opens downward. It is installed so that it can be opened and closed freely. Each of these hoppers 7.8 has a base 1
It is supported and fixed via flanges 17, respectively, on a plurality of pillars 16 provided upright from the base 15, and a loading device, for example, a loading A space is secured for the delivery truck 18 to enter and exit.

The capacity of each hopper 7.8 is set to be relatively small, for example, the same as the maximum loading capacity of the unloading truck 18 at one time, and -
The hopper is emptied during each shipment to reduce the residence time of the stored items.

Further, the distance between both ends of the hopper discharge ports 11, 12 is set smaller than the width of the shipping truck 18, so that the truck 18 only needs to always enter a fixed position during shipping.

On the other hand, between the input ports 9 and 10 of the hopper and the discharge end 6 of the conveyor 1, there is provided a switching means 19 for switching and inputting the objects conveyed by the conveyor 1 into the hopper 7.8. It is provided. Specifically, this switching feeding means 19 is composed of a switching conveyor, such as a belt conveyor, whose both ends are spanned between the two hopper feeding holes 9 and 10, and this conveying surface 19a is connected to the discharge end of the conveying conveyor 1. 6, and is adapted to receive the conveyed items from the discharge end 6. and,
This switching conveyor 19 is rotatable in forward and reverse directions by a drive motor 20, and by appropriately selecting the direction of rotation, objects can be selectively thrown into any of the hoppers 7.8.

A switching means 21 is attached to the hopper 7.8 for switching the input direction of the switching conveyor 19 in response to a predetermined amount of material stored in the hopper 7.8.

Specifically, this switching means 21 inputs a level switch 22.23 attached to a portion of the side wall of each hopper 7.8 located at the upper limit of the storage amount, and inputs a signal from this level switch 22. The switching conveyor 19 based on the signal
The control section 24 controls the rotation direction of the drive motor 20. The level switches 22 and 23 detect when the contents in the hopper have accumulated and reached this position, and upon receiving this detection signal, the control section 24 issues a reverse rotation command to the drive motor 20. It is designed to output .

The switching means 21 is not limited to the level switch type, and may be constructed as shown in FIGS. 3 and 4. That is, the switching means 21 shown in FIG. 3 is provided with a light projector 25 in place of a level switch as a storage amount detection means at a portion located at the upper limit of the storage amount, and a light receiver that receives light from the light projector 25 on the horizontally opposite wall. 26 is provided, and this light reception signal is input to the control section 24, so that when the light is cut off, it is known that the storage m has reached the upper limit value.

In addition, the switching means 21 shown in FIG. 4 is provided with a load cell 27 for detecting the weight of the entire hopper between the upper end of the column 16 supporting the hopper 7.8 and the flange 17. This detected value is input to the control unit 24, and when the detected value exceeds a predetermined value, it is determined that the storage amount has reached the upper limit value.

Next, the operation of the present invention configured as described above will be described.

First, washed sand is transported from the sand settling pond.

Materials to be transported, such as waste residue, are transferred to the carry-out conveyor 3 and the transport conveyor 1.
．． 2 and is fed into the hopper of the storage device 4.5 from its discharge end 6. Here, since both the sand and slag as conveyed materials are stored and discharged in the same way, the sand settling will be explained hereafter.

The hopper 7 into which the objects to be transported is initially empty and is located on the right side in FIG. That is, the conveyed sand falling from the discharge end 6 falls onto the conveyance surface 19a of the switching conveyor 19, which is the switching feeding means, and is further conveyed to the right by this conveyor 19, and is fed into the right hopper 7 from the end thereof. It passes through mouth 9 and falls. As a result, the sand is gradually stored in the right hopper 7, and when this reaches the upper limit of the storage amount, the level switch 22, which is a part of the switching means 21 provided on the upper side wall of the hopper, is automatically activated inside the hopper 7. It is detected that the container is full, and this detection signal is input to the control section 24. The control unit 24 immediately outputs a reverse rotation command signal to the drive motor 20 of the switching conveyor 19.
The rotational direction of the switching conveyor 19, that is, the feeding direction is switched and feeding of sand toward the left hopper 8 is started.

At this time, the left hopper 8 is already empty. That is, while the goods to be transported are being loaded into the right hopper 7 as described above, the transport truck 18 enters the lower part of these hoppers 7 and 8, and the stored goods in the left hopper 8 are removed. This is because all of the materials were discharged into the truck 18 and shipped.

In this way, while the material to be transported is being put into the left hopper 8, the truck 18 again enters the lower part of the hopper 8, and this time the stored material in the right hopper 7 is loaded and carried out. It will be done.

When the left hopper 8 becomes full, the level switch 23 detects this state, and the control section 24 switches the input direction of the switching conveyor 19 again.

Thereafter, the switching operation of the feeding direction of the switching conveyor 19 will be performed in the same manner.

The storage capacity of each hopper 7.8 is made to be relatively small, for example, approximately equal to the loading capacity of the transport truck 18, so that the hopper can be emptied with one loading. It goes without saying that the hopper capacity may be expanded to the loading capacity of several trucks.

Since storage and unloading are carried out alternately between the two hoppers 7.8, the time that the stored materials remain in each hopper 7.8 becomes very short, and during this period, the stored materials can be prevented from rotting.

In addition, in the past, as the number of customers in the hopper has increased, stored materials have accumulated inside the hopper, causing blockage problems, making it difficult to load trucks smoothly and making it difficult to continuously unload transported materials from sand settling ponds, etc. However, according to this embodiment, a plurality (two units) of small-capacity Boppafu 8 are provided, and the items to be transported are automatically switched between them, so that the stored items can be Trucks can be continuously loaded without clumping in the hopper and causing clogging problems, and objects to be transported can also be continuously fed into the hopper.

Furthermore, during maintenance, it is sufficient to simply stop loading into one of the hoppers and continue loading and unloading into the other hopper, allowing truck unloading work to be performed continuously.

[Effects of the Invention] In summary, according to the present invention, the following excellent effects can be achieved.

(1) Since multiple small-capacity hoppers are installed and the items to be transported are automatically switched, the residence time of stored items in the hoppers is much shorter than in the conventional case, reducing spoilage and spoilage. It is hygienic and does not generate bad odors.

■ Also, since there is less stored material in the hopper, there is no possibility of the stored material clumping or becoming hard and causing clogging problems, and not only can unloading work to trucks be carried out continuously, but the hopper It also becomes possible to perform the work of charging the inside of the container continuously.

(3) Since the hopper itself has been made smaller, it can be installed indoors without damaging the aesthetics.

(Φ Since there are multiple hoppers, only one can be stopped and the other can be operated during maintenance, so there is no need to stop loading and unloading operations.

[Brief explanation of the drawing]

1 is a plan view showing a preferred embodiment of the present invention, FIG. 2 is a sectional view taken along the line IF-IF in FIG. 1, FIG. 3 is a schematic plan view showing a modification of the present invention, and FIG. The figure is a schematic plan view showing still another modification of the present invention. In addition, 1 is a transport conveyor (for sand settling), 2 is a transport conveyor (
4.5 is temporary storage device 1.7.8 is hopper,
19 is a switching means (switching conveyor), and 21 is a switching means.

Claims (2)

[Claims] (1) In a temporary storage device that temporarily stores transported materials such as sand and sludge transported by a transport conveyor in order to be shipped to a truck, etc., a plurality of hoppers molded to have a relatively small capacity are used. , a switching means for switching and charging the material carried by the transport conveyor into the hopper; and a switching means provided in the hopper, the switching means being provided in the hopper in response to a predetermined amount of material being stored in the hopper. What is claimed is: 1. A temporary storage device for conveyed objects, characterized by comprising: switching means for switching the feeding direction. (2) Claim 1, characterized in that the switching feeding means is comprised of a switching conveyor that is disposed between the hoppers and whose conveyance surface faces the discharge end of the conveyor. Temporary storage device for the conveyed items described.