JP2023152212A - Powder supply device - Google Patents

Abstract

To provide a powder supply device allowing for realizing a more correct amount of supply when preparing a mixture by blending various substances.SOLUTION: A powder supply device comprises a hopper 2 that inputs powder, a trough 3 that receives a powder falling down from a nozzle 21 of the hopper 2, and a vibration generator 4 that supports the trough 3 and gives vibration to the trough 3. The trough 3 is formed with a discharge groove 31 to discharge powder, and the discharge groove 31 is arranged with a weir member 32 formed with a V-shaped notch nearly perpendicularly to a generally vertical direction or an inclination direction of the discharge groove.SELECTED DRAWING: Figure 1

Description

The present invention relates to a powder supply device.

When preparing a mixture by blending various substances, it may be necessary to mix the substances to be blended while supplying them in fixed amounts. When the substance to be blended is powder, a powder supply device is commercially available as a device for supplying a fixed amount of powder.

The powder supply device is equipped with a hopper for charging powder, a trough for catching the powder falling from the hopper, and a vibration generator for generating vibrations for the trough. By applying vibration to the trough, it is possible to discharge a certain amount from the trough. Examples of this known technology include the following patent documents and non-patent documents.

Japanese Patent Application Publication No. 2001-215147

https://axel. as-1. co. jp/asone/d/1-6154-01/

However, the technique described in Patent Document 1 has a complicated structure, and there may be room for improvement in practical terms.

Furthermore, in the technique described in Non-Patent Document 1, there is friction between the powder and the trough, and there is still room for improvement in achieving a more uniform constant supply amount.

Therefore, in view of the above problems, an object of the present invention is to provide a powder supply device that can realize a more accurate supply amount.

A powder supply device according to one aspect of the present invention that solves the above problems includes a hopper for charging powder, a trough that receives powder falling from a nozzle of the hopper, and a trough that supports the trough and suppresses vibrations to the trough. and a vibration generating device for discharging the powder. A weir member in which a V-shaped notch is formed is installed in a direction substantially perpendicular to the direction of inclination.

Further, in this aspect, it is preferable that the weir member is disposed within a range of 1 cm or more and 5 cm or less from the powder falling end of the discharge groove in the trough, although it is not limited thereto.

Further, from this point of view, although not limited to this, the angle of the V-shaped cut is preferably in the range of 30 degrees or more and 90 degrees or less.

Further, from this point of view, although not limited to this, the height of the V-shaped cut is preferably in a range of 5 mm or more and 30 mm or less from the bottom of the discharge groove.

As described above, the present invention provides a powder supply device that can prevent the powder from spreading over the width of the trough and realize a more accurate supply amount when supplying a small amount of powder. can.

FIG. 1 is a diagram schematically showing a powder supply device according to an embodiment. It is a figure showing an outline of a weir member concerning an embodiment. It is a graph showing the experimental results of measuring the falling weight of moving powder due to changes in vibration frequency using an experimental device. It is a figure showing the narrow part of the powder supply device concerning an embodiment.

Hereinafter, embodiments of the present invention will be described in detail using the drawings. However, the present invention can be implemented in many different forms, and the specific examples described in the embodiments shown below can also be changed and adjusted as appropriate, and the present invention is not limited to these.

FIG. 1 is a schematic diagram of a powder supply device (hereinafter referred to as "this device") 1 according to the present embodiment. As shown in this figure, this device 1 includes a hopper 2 into which powder is input, a trough 3 that receives the powder falling from a nozzle 21 of the hopper 2, and a trough 3 that supports the trough 3 and applies vibration to the trough. The trough 3 is provided with a discharge groove 31 for discharging the powder, and the discharge groove 31 is provided with a vibration generating device 4 in a substantially vertical direction or A weir member 32 in which a V-shaped notch 321 is formed is installed in a direction substantially perpendicular to the direction of inclination of the discharge groove (FIG. 2).

With the above configuration, the present device 1 can realize a more accurate supply amount. Specifically, as will become clear from the description below, the weir member 32 literally plays the role of a weir, and by discharging a minute amount of powder from the V-shaped notch 321, the remaining part of the trough 3 is (distance from the powder falling end of the discharge groove 31 in the trough 3 to the weir member 32), it is possible to form a linear powder flow with a uniform width, so as mentioned above, a more accurate supply amount can be achieved. will be able to realize it.

In this device 1, the powder to be supplied is put into the hopper 2, falls from the nozzle 21 into the trough 3, is moved to the falling end by the vibration given to the trough 3, and is dropped from the falling end. Although there is no limitation as long as it can be supplied, it is preferable to use a powder that requires a more accurate supply amount. Suitable examples of this powder include paper sludge used in deodorizing agents, water retention agents, humidity conditioners, and the like.

The hopper 2 in the present device 1 is used to charge powder as described above. The hopper 2 is formed with a mortar-shaped powder input port, and can accommodate and hold the introduced powder.

Further, the hopper 2 in the present device 1 is equipped with a nozzle 21. Specifically, a nozzle 21 is provided on the opposite side (lower side in the vertical direction) of the mortar-shaped powder inlet, and can discharge a fixed amount of the introduced powder per fixed time.

Further, the trough 3 in the present device 1 is for receiving powder falling from the nozzle 21 of the hopper 2 as described above.

Further, the trough 3 in the present device 1 is formed with a discharge groove 31 for discharging powder. As described later, the trough 3 receives vibrations from the vibration generator 4 and transmits the vibrations to the powder to discharge the powder to the outside. Therefore, by forming a groove, the powder is discharged along the groove. It is necessary to move the body.

The shape of the discharge groove 31 is not limited as long as it can perform the above function, but may include a flat plate-shaped bottom member 311 and a pair of flat bottom members 311 that are erected substantially perpendicularly to the plate-shaped bottom member 311. It is preferable to include a wall member 312. In particular, since the bottom member is plate-like (flat plate-like), stable quantitative supply is possible.

Further, the vibration generator 4 in the present device 1 supports the trough 3 and applies vibration to the trough 3, as described above. More specifically, the vibration generator 4 is provided at the lower part of the trough 3 and transmits the vibration to the trough 3. Although the vibration transmitted to the trough 3 is not limited, it is preferable that it is a vertical vibration. By performing vertical vibration, the powder is lifted from the bottom member, and the vertical width of the vibration can become the inclination of the trough, making it easier to discharge the powder in a certain direction. Note that there is an advantage that the amount of discharge can be adjusted depending on the strength of the vibration.

Further, in the present device 1, as described above, the discharge groove 31 of the trough 3 has a weir in which a V-shaped notch 321 is formed in a substantially vertical direction or in a direction substantially perpendicular to the inclination direction of the discharge groove. A member 32 is installed.

Further, in the present device 1, the weir member 32 is preferably disposed within a range of 1 cm or more and 10 cm or less from the powder falling end of the discharge groove in the trough, and more preferably 5 cm or less. That is, even after the powder is dropped from the V-shaped groove, it continues to move on the bottom member 311 within a range of 1 cm or more and 5 cm or less. By setting it to 1 cm or more, it is possible to secure an area for confirming that the powder is being supplied linearly (falling down) on the discharge groove 31, and by setting it to 5 cm or less, the above-mentioned powder can be This allows for accurate powder feeding.

Further, it is preferable that the angle of the V-shaped cut of the weir member 32 in the present device 1 is within a range of 30 degrees or more and 90 degrees or less. By setting it within this range, the supply amount can be controlled more accurately as described above.

Further, the height of the V-shaped cut of the weir member 32 in the present device 1 is preferably in the range of 5 mm or more and 30 mm or less from the bottom of the discharge groove 31. By setting it to 5 mm or more, it becomes possible to store the powder discharged from the nozzle in this weir member 32, and it is possible to maintain a uniform powder state. On the other hand, by setting the height to 30 mm or less, it becomes possible to prevent dissipation of the powder that occurs when the powder collides with the bottom member 311 due to the falling height being too high.

Further, it is preferable that a narrow portion 33 is provided on the powder falling end side of the trough 3 in the present apparatus 1, as shown in FIG. Here, the narrowed portion 33 refers to a portion provided at the tip of the discharge groove 31 and serving as the tip of the trough 3. Although it is preferable to provide the narrowed portion 33 from the viewpoint of more accurately determining the falling point of the powder without being exposed to wind from the outside when the powder falls, it may be omitted. be.

As described above, according to this embodiment, it is possible to provide a powder supply device that can realize a more accurate supply amount. To explain more specifically, in this device 1, powder is stored once by providing a weir member 32 in which a V-shaped notch 321 is formed in the discharge groove in the trough, and then the powder is stored once and then the V-shaped notch 321 is It becomes possible to drop a more reliable amount from the part. This makes it possible to suppress unevenness (dispersion) in the supply amount caused by vibrations applied to the trough. In particular, by providing a region between the falling end of the trough 3 and the weir member 32, there is an advantage that the uniform falling amount can be reliably confirmed.

Here, the powder supply device according to the above embodiment was actually manufactured and its effects were confirmed, which will be described below.

First, a commercially available powder metering and feeding machine (PF-100, manufactured by As One Corporation) was used as an apparatus, and a weir member 32 was provided in the trough 3 of the powder metering and feeding machine to block the cross section of the trough. Note that this weir member 32 is provided with a V-shaped notch, and this notch is formed so that the lowest point (the V-shaped turning point) is at a height of 1 cm from the bottom of the discharge groove 31 of the trough 3. did. Note that the angle of V was 60 degrees. By providing this weir member 32, it is possible to prevent the powder from spreading over the entire trough drop opening.

Then, when paper sludge (average particle size of about 1 mm) was put into the powder metering and feeding machine as a powder and discharged from the trough 3 by being vibrated, compared to the case without this weir member 32, We confirmed that it is possible to drop a certain amount extremely accurately (Figure 3). The results of this experiment were conducted at the Tokyo Metropolitan Industrial Technology Research Center in Koto Ward, Tokyo.

As mentioned above, in factories that handle powder, it is necessary to flow powder in a fixed direction using vibration to prevent powder clogging, and the flow rate of the moving powder due to changes in vibration at that time is analyzed. Based on the experimental results obtained for the purpose, it was possible to confirm the effects of the present invention.

The present invention has industrial applicability as a powder supply device.

1 Powder supply device 2 Hopper 21 Nozzle 3 Trough 4 Vibration generator 31 Discharge groove 321 V-shaped notch 32 Weir member

Claims (4)

A hopper for introducing powder,
a trough that catches the powder falling from the nozzle of the hopper;
A powder supply device comprising: a vibration generator that supports the trough and applies vibration to the trough;
The trough is formed with a discharge groove for discharging the powder, and the discharge groove has a V-shaped groove extending substantially vertically or substantially perpendicularly to the inclination direction of the discharge groove. A powder supply device equipped with a weir member with a notch formed therein. The powder supply device according to claim 1, wherein the weir member is disposed within a range of 1 cm or more and 5 cm or less from the powder falling end of the discharge groove in the trough. The powder supply device according to claim 1, wherein the angle of the V-shaped cut is within a range of 30 degrees or more and 90 degrees or less. The powder supply device according to claim 1, wherein the height of the V-shaped cut is in a range of 5 mm or more and 30 mm or less from the bottom of the discharge groove.

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