JP5539770B2 - Auxiliary filling device for storage container - Google Patents

Description

  This invention accepts these products and wastes fed or discharged from an apparatus or the like that generated intermediate products or wastes, and transports them to a desired process in a later process, for example, Reservoir filling auxiliary device for improving the efficiency when filling these intermediate products and waste into the storage container, which is a container waiting to be transported and carried out by truck, etc., and transported to the next process by conveyor etc. About.

  For example, in paper mills, paper sludge, which is fiber residue generated in the paper manufacturing process, is burned with a boiler to recover heat as biomass energy, improve energy efficiency, and effectively use resources to create a recycling-oriented society Plays. Furthermore, the paper sludge ash generated when this paper sludge is burned can be effectively used as a raw material for cement raw materials, road base materials, soil improvement materials and the like.

  For this reason, the paper sludge ash generated from the biomass boiler is fed to a hopper as a storage container, and after a certain amount is stored, the paper sludge ash is discharged from the hopper to perform a process suitable for a roadbed material or the like.

  By the way, when storing powder and particles, such as a rock, coal, and sand, in a storage container, these stored things, such as powder, are dropped from the upper direction of a storage container. At this time, since it is dropped to the central portion of the storage container, the stored matter is deposited in a conical shape with the central portion being high. At this time, the paper sludge ash is stable in a state where the angle of the conical slope, the so-called repose angle, is large due to the fine particles having an irregular shape and a large friction coefficient.

  When the angle of repose is large, the apex of the accumulated paper sludge ash cone quickly reaches the upper edge of the hopper, and there is a gap formed between the cone and the inner wall of the hopper. It becomes large and the filling rate in the hopper is low, and a sufficient amount of paper sludge ash cannot be stored.

  If the pile of stored matter is crushed and flattened in the hopper, the gap becomes smaller and the paper sludge ash filling rate in the hopper can be improved. For example, in Patent Document 1, a hopper wall swinging means is provided at the lower hopper portion of the main body container, and a force for pushing the hopper wall into the hopper wall and a force for pulling it up to the outside are repeatedly applied. An arch bridge destruction device is disclosed, and it is conceivable to use this destruction device to break up the piles of the stored matter and improve the filling rate.

  Further, Patent Document 2 includes separation means for separating the powder and gas in the powder filling container, and a discharge means for sucking and discharging the gas in the powder filling container separated by the separation means. In addition, a powder filling apparatus for filling a powder filling container with powder is disclosed. Further, this powder filling apparatus also discloses that powder filling is performed while applying vibration to the powder filling container by means of vibration.

JP 2009-67400 A JP2002-347701

  The arch bridge breaking device disclosed in Patent Document 1 has a structure in which hopper wall swinging means is provided, and further, a force for pushing the hopper wall into the inner side by this hopper wall swinging means and a force for pulling it up to the outer side. Since it is added repeatedly, the structure of the hopper wall swinging means becomes complicated, and the drive mechanism of the hopper wall swinging means may require a complicated structure. There is a risk of increasing the size.

  Further, the powder filling device disclosed in Patent Document 2 is suitable for a case where the powder filling container is sealed because it sucks inflowing gas accompanying the powder. For this reason, it is not suitable for a container in which high airtightness is not ensured, such as a hopper for dropping stored matter from the top. In addition, the structure provided with the vibration means becomes a more complicated structure and is suitable for a powder-filled container that requires a high-precision filling amount, such as a paper sludge ash hopper. It is not suitable for structures that do not require precision in the filling amount.

  Therefore, the present invention has a simple structure, in particular, a storage container that can improve the filling rate of a hopper that stores a storage object that is lightweight and has a large angle of repose, such as paper sludge ash. The object is to provide a storage filling auxiliary device.

As a technical means for achieving the above object, a storage filling auxiliary device for a storage container according to the present invention comprises a cylindrical upper body part and an inverted conical hopper part continuous with the upper body part. In a storage container that accepts a stored substance such as powder or granules dropped from above the upper body part, and discharges the stored substance from a lower end part of the hopper part, a storage container is provided below the upper body part. An air outlet for injecting compressed air is provided in the interior of the interior, and compressed air is injected from the air outlet immediately before the reservoir reaches the air outlet.

  When compressed air is injected from the air outlet, the fluidity of the reservoir increases, the cone-shaped mountain formed by deposition is broken, and the angle of repose decreases. For this reason, the gap between the storage and the inner wall surface of the storage container is reduced, and the storage is filled densely in the storage container.

  In the storage container having the hopper portion at the lower portion, the hopper portion is formed in an inverted conical shape. Therefore, no gap portion is formed between the stored matter stored in the hopper portion and the inner wall surface of the hopper portion. In the department, the reservoir is stored densely. On the other hand, in the upper body portion, the accumulated matter is accumulated in a conical shape, so that the filling rate of the accumulated matter in the upper body portion can be improved by breaking the conical shape. For this reason, the said air blower outlet is provided in the lower part of an upper trunk | drum.

  The height position at which the air outlet is provided is determined by the properties of the storage, etc., for example, in the properties of the storage such as a low position for a storage with a large angle of repose and a high position for a small storage. The position should be suitable.

  Moreover, it is avoided that an air blower outlet is obstruct | occluded with a reservoir | recovery by blowing compressed air just before a storage material reaches an air blower outlet.

  In addition, as long as the cylindrical upper body portion and the inverted cone shape are combined, a shape having a combination of a cylinder and an inverted cone is preferable, but the upper body portion is a rectangular tube and the hopper portion is a square tube. It may be a continuous inverted pyramid shape.

Moreover, the storage-fill auxiliary | assistant apparatus to the storage container which concerns on invention of Claim 2 has distribute | arranged the said air blower outlet in the several places of the surrounding wall part of a storage container, It is characterized by the above-mentioned.

  The air outlets are provided at a plurality of locations, and are provided at equal intervals or unequal intervals along the circumferential direction in the peripheral wall portion of the storage container.

Moreover, the storage-filling auxiliary | assistance apparatus to the storage container which concerns on invention of Claim 3 is characterized by the height position differing in the air blower outlet provided in the said several places.

  For example, when transporting and dropping the storage to the storage container, for example, with a belt conveyor, the storage is accelerated in the transport direction by the belt conveyor, and may be dropped to a position deviated from the center of the storage container. . In this case, the apex of the conical shape due to the accumulation of the storage material deviates from the center of the storage container, and the height of the bottom of the conical shape is different. For this reason, the height of the air outlet is made different so that the pile of the higher-side storage can be efficiently destroyed when the storage is deposited.

According to a fourth aspect of the present invention, there is provided a storage filling auxiliary device for a storage container, wherein the compressed air is jetted radially from an air outlet toward the center of the storage container.

  The injection direction of compressed air should just be a direction which can provide fluidity | liquidity efficiently with respect to the stored object so that it may mention later. However, it is inconvenient if the nozzles and openings for injection are clogged with storage. Further, it is preferable if the stored matter that has entered the nozzle or opening by the injection of compressed air is surely blown away and removed. Therefore, the injection direction is the radial direction.

Moreover, the storage-fill auxiliary | assistance apparatus to the storage container which concerns on invention of Claim 5 is characterized by the said storage being paper sludge ash.

  According to the storage filling auxiliary device for a storage container according to the present invention, fluidity is imparted to the storage accumulated by injecting compressed air, and the pile of the storage is destroyed. For this reason, the filling rate of a stored matter can be improved and the capacity | capacitance of a storage container can be utilized effectively as much as possible.

  Moreover, since it is the structure which blows off compressed air, it is sufficient to construct piping of compressed air, and a filling rate can be improved reliably with a simple structure.

It is a front view which shows the storage container provided with the reserve filling auxiliary | assistance apparatus which concerns on this invention, and has shown the storage container which has a conical hopper part in the lower part. It is a top view of the storage container shown in FIG. It is a figure which expands and shows a part of storage container shown in FIG. 2, and has shown the air blower outlet.

  Hereinafter, based on a preferred embodiment shown in the drawings, a storage filling auxiliary device for a storage container according to the present invention will be specifically described.

  FIG. 1 is a front view showing a hopper 1 for storing paper sludge ash installed in a paper mill as an example of a storage container, supported by a frame 2 assembled in a bowl shape with steel materials. Yes. The upper part of the hopper 1 is a cylindrical upper body part 1a, and the lower part is an inverted conical hopper part 1b. The upper body part 1a and the hopper part 1b are connected to each other. A discharge port 3 is provided at the top of the inverted conical shape that is the lowest part of the hopper 1b, and the stored paper sludge ash is dropped from the discharge port 3 and discharged. When the paper sludge is discharged, a paper sludge ash transport vehicle faces the receiving port below the discharge port 3 and waits to receive the paper sludge ash that has fallen.

  As shown in FIG. 2 and FIG. 3, air directed in the radial direction of the upper trunk portion 1 a is located at a suitable height from the upper end of the hopper portion 1 b in the lower wall of the upper trunk portion 1 a. An air outlet 10 is provided. An air chamber 11 installed outside the upper body portion 1a is connected to the air outlet 10 and is connected to a compressor (not shown) and supplied with compressed air. A discharge valve 11a is provided at the discharge port of the air chamber 11, and when the discharge valve 11a is opened, compressed air is injected from the air outlet 10 into the hopper 1. .

  FIG. 2 is a plan view of the hopper 1. As shown in FIG. 2, the air outlets 10 are installed at substantially equal intervals along the periphery of the upper trunk portion. An air chamber 11 is connected.

Paper sludge ash is dropped onto the hopper 1 from above, but when the stored paper sludge ash reaches a predetermined height position, it can no longer be stored. For this reason, a height detecting means for detecting that the stored paper sludge ash is stored up to a predetermined height is provided, and the supply of the paper sludge ash is stopped by the detection signal. Therefore, the position immediately before the paper sludge ash reaches the air outlet 10 is detected by this height detecting means, and the blowing valve 11a is opened by the detection signal so that compressed air is blown out from the air outlet 10. It is.

  The operation of the storage filling auxiliary device for the storage container according to the present invention configured as described above will be described below.

Paper sludge ash generated by the combustion of a biomass boiler using paper sludge as fuel is dropped from above the hopper 1 by a conveying device (not shown) and stored in the hopper 1. When the dropped paper sludge ash fills the hopper portion 1b, the paper sludge ash is dropped almost at the center in the upper trunk portion 1a. The hopper portion 1b is also dropped almost at the center, but the inner wall surface is formed in an inverted conical shape, so that it tends to collapse on the inner wall surface and accumulates at a relatively small angle of repose. In the upper trunk portion 1a, the inner wall surface is formed in a cylindrical shape, so that the inner wall surface hardly collapses and deposits at a large angle of repose. When the paper sludge ash deposited on the upper body 1a reaches a predetermined height, it is detected by a detection means (not shown) and a detection signal is output.

  When the detection signal is issued, the blowing valve 11a is opened, the air chamber 11 and the air outlet 10 communicate with each other, and compressed air is injected from the air outlet 10. The paper sludge ash is blown off and flows by this jet of compressed air. For this reason, the paper sludge ash is agitated and the cone-shaped mountain formed by the deposition is broken. Therefore, the gap between the conical shape and the inner wall surface of the upper body 1a is filled, so that the filling rate is improved and more paper sludge ash can be stored.

  Then, when the paper sludge ash reaches the upper part of the upper body 1a, the upper part of the paper sludge ash is detected by the detecting means, and the conveying device for conveying the paper sludge ash to the hopper 1 stops. At this time, since the angle of repose of the conical shape formed by the accumulation of paper sludge ash is small, the inside of the hopper 1 is filled with the paper sludge ash and the filling rate is good. Note that, together with the stop of the conveying device, the blow-off valve 11a is closed and the injection of compressed air is also stopped.

  In the embodiment described above, the air outlets 10 are described as being installed at substantially equal intervals on the peripheral surface of the upper trunk portion 1a. However, the air outlets 10 may be installed at different height positions. Absent. In particular, when paper sludge ash is accelerated in the transport direction when dropping due to a change in the transport speed or the like, it is dropped at a position deviated from the center of the hopper 1. It deviates from the center, its shape deforms, and comes into contact with the inner wall surface of the hopper 1 at different heights. In this case, it is possible to quickly collapse the mountain by first breaking the paper sludge ash at the place where the contact is high, it is possible to quickly secure a gap that can be filled, and the paper sludge ash can be dropped smoothly. At the same time, the filling rate can be improved.

  In this embodiment, the hopper 1 having a cylindrical upper trunk portion 1a and a lower cone-shaped hopper portion 1b for storing paper sludge ash has been described. Therefore, for example, the storage filling auxiliary device according to the present invention can be used for a silo for storing grains or the like. In other words, it is effective when the reservoir has a large angle of repose in the deposited state, and a large gap is formed between the reservoir and the inner wall surface of the storage container, thereby reducing the filling rate. Can be used.

  According to the storage filling assisting device for the storage container according to the present invention, even when the storage angle is increased and the stored storage is stored, the filling rate can be reliably improved. Moreover, since the compressed air is injected, a simple structure may be used, and it can be used for a storage container that stores a storage that is not affected even when air is blown in.

1 Hopper (storage container)
1a Upper trunk
1b Hopper section 3 Discharge port
10 Air outlet
11 Air chamber
11a Outlet valve

Claims (5)

A cylindrical upper body portion and an inverted cone-shaped hopper portion continuous with the upper body portion , receiving a stored substance such as powder or granules dropped from above the upper body portion ; In the storage container for discharging the stored matter from the lower end of the
An air outlet for injecting compressed air into the storage container is provided at the lower part of the upper body part,
A storage filling auxiliary device for a storage container, wherein compressed air is injected from the air outlet immediately before the storage reaches the air outlet.   The said air blower outlet is distribute | arranged to the multiple places of the surrounding wall part of a storage container, The storage material filling auxiliary | assistance apparatus to the storage container of Claim 1 characterized by the above-mentioned.   The storage air filling auxiliary device according to claim 2, wherein the air outlets provided at the plurality of locations have different height positions. The compressed air, savings Tomebutsu filling aid to the storage container according to claim 1, characterized in that it is injected from the air outlet in the radial direction toward the center of the storage container up to claim 3 apparatus.   The storage filling auxiliary device for a storage container according to any one of claims 2 to 4, wherein the storage is paper sludge ash.

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