JPS6223749Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blocking (occlusion) prevention mechanism for a powder storage container, and its purpose is to reliably prevent blocking with a simple structure.

When storing a large amount of powder or granular materials such as rubber pellets that are prone to block phenomenon in a container such as a silo, the powder or granule material at the bottom of the container is subjected to a large compressive load due to its own weight, causing block phenomenon. , it solidifies inside the container and cannot be discharged unless a special discharge mechanism is installed.

The present invention divides the powder and granules located on the vertical line in order to avoid the above-mentioned conventional problems caused by the addition of the load of the powder and granules on the vertical line and a large compressive load acting on the powder and granules at the lower end. It is designed to be supported by a baffle plate at a predetermined height that will not cause blocking phenomenon, and has a tapered part that decreases in diameter as it goes downwards directly above the discharge port at the bottom end, and a cylindrical cylinder with an input port at the top end. A container shaped like a cap, a sloping baffle plate fixed vertically in the center of the container with an interval smaller than the block limit dimension, and a space between adjacent slanted baffle plates so as to cover the distance between each inclined baffle plate and the inner surface of the container. An annular baffle plate fixed to the inner surface of the container and having a chevron-shaped cross-section protruding toward the center of the container prevents the weight of powder or granules with a thickness exceeding the above-mentioned distance from acting on the powder or granules below, and A number of small holes are provided in the inclined baffle plate, and an air nozzle is arranged within the baffle plate with small holes.
Next, it will be explained with reference to the drawings.

In FIG. 1 showing the first embodiment, a container 1 has a plurality of cap-shaped baffles 2, 3, and 4 inside.
The container 1 may be a silo or a container for storing rubber pellets or the like. In the illustrated embodiment, three baffle plates 2 to 4 are arranged concentrically with vertical intervals, and the baffle plate 2 is connected to the container by a plurality of supports 5 extending radially.
The same applies to the baffle plates 3 and 4. An annular baffle plate 6 with a chevron-shaped cross-section protruding toward the center of the container 1 is fixed to the inner surface of the container 1 at an intermediate height between the baffle plates 2 and 3. A similar baffle plate 7 is also provided on the inner surface of the container 1 at the height. container 1
is equipped with an input port 11 at the top end and a discharge port 12 at the bottom end,
The interior is filled with powder 13 that is prone to blockage, such as rubber pellets, and the state shown is that the powder 13 is continuously fed into the inlet 11 and continuously discharged from the outlet 12. The state when the discharge port 12 is opened, or the state when discharge is started by opening the discharge port 12 is shown. L in the figure is the block limit length, baffle plates 2 to 4, 6, 7, tapered part 1
The vertical distance between each powder support member is determined to be within L so that blocks do not occur even if the powder 13 is deposited above the member supporting the powder or granule 13 such as a. In other words, it is considered that the powder 13 does not accumulate above each powder support member in an amount larger than the block limit length L. For this reason, in the embodiment shown in FIG. When paying attention to , any baffle plate exists within the range L above that point. In short, each baffle plate is arranged within the container 1 so as to cover substantially the entire horizontal cross section.

No matter which powder or granule material support member is focused on in the container 1, the powder or granule material 13 is prevented from being accumulated above it in excess of the block limit length L. Not only when discharging the powder but also when simply storing the powder or granular material 13 in the container 1, powder is collected between the baffle plate 4 and the container tapered part 1a, between the baffle plate 3 and the baffle plate 7, etc. Blocking phenomenon due to excessive compressive load between particles does not occur.

The baffle plate in the upper part can be adjusted depending on the type of powder or granular material,
By arranging the baffle plates at a distance that does not cause blocking due to their properties, the required number of baffle plates can be reduced and costs can be reduced. The baffle plate 4 at the lower end has many small holes 8.
An air nozzle 9 opens upward in the baffle plate 4, and this nozzle 9 is fixed to the tapered part 1a of the container 1 so as to also serve as a support, and is connected to a pressurized air supply source (not shown) through a piping 10. is connected to. Since pressurized air or the like is blown from the nozzle 9 below the baffle plate 4 and the air is discharged from the exhaust port at the upper end, the baffle plate 4 can fulfill the dual role of venting gas and preventing blockage. In that case support 5
Make a part of the pipe and use this to connect the nozzle 9.
Forming simplifies the structure. The nozzle 9 for blowing air usually only needs to be located within the lowest baffle plate 4, but depending on the type of powder or granules, air can be blown from each baffle plate part.

As explained above, in the present invention, a cylindrical container 1 having an input port 11 at the upper end, and a tapered portion 1a that decreases in diameter as it goes downwards just above the discharge port 12 at the lower end, and The inclined baffles 2, 3, and 4 are fixed at intervals smaller than the block limit dimension, and are fixed to the inner surface of the container between adjacent inclined baffles so as to cover the distance between each inclined baffle and the inner surface of the container. The annular baffle plates 6 and 7 having a chevron-shaped cross-section protruding toward the center of the container 1 prevent the weight of powder and granules with a thickness that exceeds the above-mentioned distance from acting on the powder and granules below. Exit 12
Not only when the granular material 13 is being discharged from the container 1, but also when the granular material 13 is simply stored in the container 1, the space between the baffle plate 4 and the tapered part 1a of the container, or between the baffle plate 3 and the baffle plate. 7, etc., no blocking phenomenon occurs due to excessive compressive load between powder and granules. Moreover, in addition to the slanted baffle plates 2, 3, and 4, the annular baffles 6, 7 with a chevron-shaped cross section are provided, so that when the powder 13 is discharged, the surface of the slanted baffle plates 2, 3, Powder 1 that flowed down while expanding outward in the radial direction
3 passes through the cap-shaped baffle plates 2 and 3, and is forcibly changed to the center side of the container by the baffle plates 6 and 7,
At the same time as it collides with the surface of the next shade-shaped inclined baffle plate 3, it freely extends into the space inside the shade-shaped baffle plate 2 directly above it, and flows down the surface of the shade-shaped baffle plate 3 in a free state again. . In this way, the flow direction changes in a bellows shape, collides with the central baffle plate, and is released into a free state. This step is repeated, and the powder 13 is well divided and the space inside the container 1 is By making full use of this, it is possible to effectively prevent the blocking phenomenon of powder and granular materials. Furthermore, two types of baffle plates 2, 3, 4 and 6, 7 cover almost the entire horizontal cross section of the container 1, and these baffle plates work together to support the powder 13 above. Since it is shaped like this, it is possible to secure a passage for the powder and granular material 13 to flow down, and also to almost completely fill the space (horizontal cross section) inside the container 1 with both baffle plates when viewed from above. The size (thickness) of the powder on the baffle plate can be kept smaller than the block limit length. Furthermore, according to the present invention, a large number of small holes 8 are provided in the inclined baffle plate 4 at the lowest end, and air nozzles 9 are arranged within the baffle plate 4 with small holes, so that it has the dual role of venting gas and preventing blockage. can be accomplished. That is, the air blown from the air nozzle not only keeps the powder around the baffle plate 4 in a floating state to prevent blocking, but also rises inside the bellows-shaped powder passage and displaces the powder. A suitable gap is provided within the cylinder 13 to prevent blockage, and it also functions as a gas vent. Furthermore, since the air nozzle 9 is used, vibration and noise can be minimized compared to the case where a vibrator or the like is used.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of the case where a baffle plate shaped like a cap is used. 2 to 4... Baffle plate, 13... Powder material.

Claims (1)

[Scope of utility model registration request] A cylindrical container 1 having a tapered part 1a that decreases in diameter as it goes downwards just above the outlet 12 at the lower end and an input port 11 at the upper end, and a space smaller than the block limit dimension vertically in the center of the container 1. Fixed slanted baffles 2, 3, and 4 in the shape of a campground, fixed to the inner surface of the container between adjacent slanted baffles so as to cover the gap between each slanted baffle and the inner surface of the container, and protruding in a chevron shape toward the center of the container 1. The annular baffle plates 6 and 7 with a cross-sectional shape prevent the weight of the powder and granule having a thickness exceeding the above-mentioned interval from acting on the powder and granule below, and a large number of small holes are provided in the lowermost inclined baffle plate 4. 8, and an air nozzle 9 is disposed within the baffle plate 4 with small holes.