JPH0227252B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to materials storage containers, particularly containers for temporarily storing sticky materials such as asphalt.

(Prior Art) Material storage containers are used in a wide range of fields for the purpose of receiving and storing various fluid materials, and then dispensing them one after another. An example of such a storage container is one that is attached to production equipment for asphalt aggregate used in paving materials and is used for temporary storage to facilitate the loading and transportation of aggregate onto trucks. It may be provided. Asphalt aggregate must be maintained at elevated temperatures during delivery and storage in order to be efficiently evacuated from the storage container by gravity and to maintain sufficient fluidity for convenient subsequent use. Furthermore, the aggregate deteriorates due to oxidation when it comes into contact with oxygen-containing atmosphere, and this oxidation effect is further accelerated at high temperatures, so a method is used to replace the air in the container with an inert gas. There is.

However, as such a storage container,
-There is one shown in Publication No. 13010. This thing is
Small holes are formed throughout the bucket from the side to the bottom, and these small holes prevent a vacuum from forming between the material and the inner surface of the bucket, preventing the material from adhering to the inner surface of the bucket. It has become convenient for releasing materials.

(Means for Solving the Problems) Incidentally, in the conventional example described above, small holes are formed throughout the bucket bag from the side to the bottom. Although this prevents the aggregate from adhering to the inner surface of the bucket, the aggregate gets caught in the small holes, especially the small holes formed on the sides of the bucket, making it difficult to separate from the inner surface of the bucket, resulting in material release. Not only can this process not be carried out smoothly, but the surface area of the aggregate that comes into contact with the atmosphere becomes large, and the aggregate is easily oxidized and deteriorated, making it impossible to supply high-quality aggregate.

The present invention solves the above-mentioned problems, and solves both the adsorption and catching of the sticky material inside the bucket to the inner surface of the bucket, allowing it to be released smoothly, and preventing oxidation from being exposed to the atmosphere. It is intended to provide a material storage container.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention has a material supply port that receives a fluid material containing aggregate such as asphalt aggregate, stores it in an inert state, and dispenses it. A container having a discharge port, a conveying device for conveying the material, and a container that is attached to the conveying device and changes into upright, inverted, and restored states, and receives the material from the supply source when the container is inverted, to the supply port of the container. A plurality of supply buckets are provided, each of which has a shape that opens toward the opening and has a small hole of a predetermined size at the bottom, and the small hole allows the bucket to be erected. The structure is such that it is sometimes blocked by material and opens when the material falls when the device is inverted.

(Function) According to the configuration of the present invention, when the material is discharged from the supply bucket, the small hole at the bottom prevents a vacuum between the inner surface of the bucket and the material, and the material is adsorbed to the inner surface of the bucket. Without a problem,
Moreover, there are no small holes on the side of the bucket, so the aggregate does not get caught, and the material is released smoothly by gravity. The surface area of the material that comes in contact with the atmosphere is small, preventing oxidation.

(Example) The present invention will be described based on an example shown in the drawings.

FIG. 1 shows the entire material storage container according to the present invention, where 1 is a material storage container and 3 is a material preparation and supply device. The material storage container 1 is mounted on a pedestal 5
It is composed of a cylindrical body part 7 supported by a cylindrical body part 7, and a circular bottom part 9 which is connected to the body part 7 and hangs down.
3, a material discharge port 15 is provided at the lower end of the bottom portion 9, and a cylindrical side wall 17 that hangs down outside the discharge port 15 and surrounds the discharge port 15.
and a bottom wall 1 that closes the lower end of the cylindrical side wall 17.
9, and a rectangular cylindrical opening 21 having a larger diameter than the discharge port 15 and connected to the bottom wall 19 are provided. A set of two butterfly-shaped first gates 23 are mounted at the open end of the discharge port 15 so as to be openable and closable by a fluid cylinder 25 and a piston rod 27. A butterfly-shaped second gate 33 having a recess 31 on the upper surface for receiving a sealing liquid 29 such as oil is provided below the opening 21, and by filling the recess 31 with the sealing liquid 29, , opening 2
1 is hermetically sealed to form an airtight chamber 35 between it and the first gate 23, and the second gate 33 is configured to be able to rotate laterally by the operation of a fluid cylinder 37 and a piston rod 39. .

Further, a converter 41 for inactivating the air inside the container is provided on the side of the material storage container 1, and piping is provided so that air can be blown and ventilated into the storage container 1 and the airtight chamber 35 by a blower 43. ing. Further, the peripheral wall of the storage container 1 is provided with heating equipment (not shown) such as a heating tube connected to a heater for maintaining the material inside the container at a constant temperature.

The material preparation and supply device 3 includes a material preparation device 55, an electric horizontal transport device 61 that horizontally transports a bucket 59 along a rail 57, and a bucket 63.
Towed by wire or chain 65, rail 67
and a vertical conveyance device 69 that changes the bucket cart 59 from an upright position to an inverted position and then back to an upright position. 7
1 is a material receiving hopper provided above the material supply port 13 of the storage container 1; 73 is a wire 65;
This is a winch for winding. Bucket 59, 63
are fastened via appropriate fasteners 82 such as bolts and nuts at the positions of through holes 80 formed in the rear side plate 78 facing the front side plate 75 and through holes (not shown) formed in the chain 65. There is. and,
A plurality of small holes 77 are provided only in the bottom plate 76 between the front side plate 75 and the rear side plate 78, and the cross-sectional shape of the bucket bags 59, 63 is such that the left and right sides open toward the opening. It is provided to be joined to the side plates 79, 79, and each corner is provided with a radius so that a part of the material does not remain in the bucket when the material is discharged. Here, the size of the small hole 77 is such that the diameter of the aggregate is 13~
If it is a mixed material of 0.01 mm, a circular hole with a diameter of 10 mm is appropriate, and even if a small diameter material initially leaks and falls from the small hole 77, a larger material will eventually block it. be.

In addition, receiving the material into the storage container 1, storing it,
The operation of various devices for dispensing is configured such that oil control valves, solenoid valves, etc. are installed at appropriate locations, and programs are set in advance so that all operations can be performed automatically.

Next, the operation of the above configuration will be explained. First, the coolant outlet 15 of the storage container 1 is closed by a pair of butterfly-shaped first gates 23 by operating the fluid cylinder 25 and piston rod 27. Next, the fluid cylinder 37 and the piston rod 39 are operated to rotate the butterfly-shaped second gate 33 below the opening 21 of the airtight chamber 35 provided below the first gate 23. Recess 3 formed on the top surface of
A sealing liquid 29 is caused to flow into the chamber 1 to isolate the airtight chamber 35 from the outside air. In this state, the slide valve 11 of the material supply port 13 provided at the upper part of the storage container 1 is opened, and a preparation material such as aggregate is charged into the storage container 1. The preparation material is prepared in the material preparation device 55, and is dispensed from the bottom of the device at any time to be transferred to the horizontal conveyance device 61.
It is transferred to the bucket 59 of the
3 to the upper part of the storage container 1 and supplied into the storage container 1 from the hopper 71 through the material supply port 13, the preparation material is held by the first gate 23 and deposited in the storage container 1. After supplying the material, the sliding valve 11 is closed, and the air inside the storage container 41 and the airtight chamber 35 is guided to the converter 41 by the blower 43, where it is brought into contact with red-hot carbon and burned, and the air inside the storage container 1 and the airtight chamber 35 is recirculated. 35 and is circulated to convert the air into an inert gas such as carbon gas or nitrogen, thereby preventing the preparation material in the storage container 1 from being oxidized and deteriorating, and at the same time allowing outside air to flow in from the material outlet 15. prevent In addition, the storage container 1 is heated by a heating device (not shown) to maintain the internal temperature constant and to prevent deterioration of the prepared material due to temperature changes.

In order to discharge the preparation material from the storage container 1 to a truck or the like, first open and close the valve in the piping and then close the second gate 33.
After the sealing liquid 29 in the recess 31 is discharged out of the system by a drop, the liquid cylinder 37 and piston rod 39 are operated to rotate the second gate 33 laterally and move the truck into the opening 21. After guiding the material downward, the liquid cylinder 25 and the piston rod 27 are activated to open the two first gates 23 by turning them left and right, and the prepared material held there falls into the loading platform of the truck. do. When a predetermined amount of dispensing is completed by detecting the weight of the truck or the required dispensing time, the first gate 23 and the second gate 33 are closed, and the sealing liquid 29 is injected to isolate the airtight chamber 35 from the outside air. By converting or replacing the air in the closed chamber 35 with an inert gas, the inside of the storage container 1 can be kept airtight. Note that the storage container 1 is equipped with a capacity that allows the dispensing of preparation materials from the storage container 1 at any time regardless of supply.

In addition, the supply buckets 59 and 63 in the material preparation and supply device 3 are formed so that the cross-sectional shape opens toward the opening, and each corner is provided with a radius. When the material is dumped in an inverted position, not only is the material discharged by gravity smoothly, but also the plurality of small holes provided on the bottom plate 76 that were blocked by the material are removed, especially when discharging sticky materials. Since the hole 77 opens when the material falls, the material is transferred to the bucket 5 without creating a vacuum at the bottom of the supply buckets 59 and 63.
9, 63 is prevented from being adsorbed to the inner surface, and the small holes 77 are provided only in the bottom plate 76 of the bucket bag 59, and the small holes 77 are provided only in the bottom plate 76 of the bucket bag 59, and the
9 and 79, and the material will not get caught on the inner surfaces of the buckets 59 and 63. Therefore, the material can be peeled off well from the inner surfaces of the buckets 59, 63, and the entire amount of the material can be easily discharged. Moreover, the small hole 77 is
5, 78, 79, and 79, and is only provided on the bottom plate 76. Since the surface area of the material that comes in contact with the atmosphere is small, deterioration due to oxidation of the material can be prevented and high quality material can be supplied. can.

In general, this kind of storage container has a density of around 100 lbs/ft ³ and can store around 200 tons of aggregate, and depending on the scale, many of these containers are constructed so that one to three can be used side by side. In order to continuously supply the storage container, a bucket elevator or a drag flight conveyor, etc., which pull up a large number of buckets arranged on a wire or chain at equal intervals, is used.

[Effect of idea]

As is clear from the above description, according to the present invention, when material is discharged from the supply bucket, adsorption and catching of the material on the inner surface of the bucket is prevented, and peeling is performed well. is released smoothly by gravity, and since the surface area of the material that comes in contact with the atmosphere is small, oxidation is prevented and high-quality material can be supplied.

[Brief explanation of drawings]

Fig. 1 is a side view generally showing the material storage device according to the present invention, Fig. 2 is a front detailed view showing a partial cross section of the base of the material storage container shown in Fig. 1, and Fig. 3 is a sectional view of the bucket. , FIG. 4 is a developed view from the front side plate to the rear side plate of the bucket. (Cross-sectional view of the symbols representing the main parts of the drawing), 1
...Material storage container, 3...Material preparation and supply device, 5
9,63... Supply bucket, 75... Front side plate, 76... Bottom plate (bottom), 77... Small hole, 78
... Rear side plate, 79, 79... Left and right side plate.

Claims (1)

[Claims] 1. A container having a material supply port and a material discharge port for receiving a fluid material containing aggregate such as asphalt aggregate, storing it in an inert state, and discharging it, a conveyance device for conveying the material, and a conveyance device for conveying the material. and a plurality of supply buckets that are attached and change into upright, inverted, and restored states to supply material received from the supply source to the supply port of the container when the container is inverted, and the shape of the buckets is oriented toward the opening. It has a shape that opens at the top and has a small hole of a predetermined size at the bottom, and the small hole is blocked by the material when the bucket is upright, and opens when the material falls when the bucket is turned upside down. Material storage container.