JP2605234B2 - Powder supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder supply device,
More specifically, the present invention relates to a powder supply device capable of suitably cleaning a weighing device or the like that precisely separates powder.

[0002]

2. Description of the Related Art Conventionally, as a device for precisely separating and weighing powdery and granular materials, there is generally used a combination of an electromagnetic feeder equipped with a vibrator and a load cell. There has been a powder supply apparatus called an in-way system or a powder supply apparatus in which an electromagnetic feeder provided with a vibrator and an electronic balance are combined.

Each device has a powder hopper for accumulating powder and a gutter for transferring powder from the powder hopper.

[0004] In any of the powder supply devices, when different types of powder are collected and weighed, the residual powder adhering to the inner surfaces of the powder hopper and the gutter must be completely removed. Must. In particular, component analysis of the weighed powder,
This is because, when used for physical property measurement and the like, if the residual powder from the previous measurement is mixed, the accuracy of the analysis and measurement results is greatly adversely affected.

Therefore, when powders of different types are collected and weighed, the powders adhering to the powder hopper and the gutter portion are taken out, or the powders are removed by suction using a vacuum cleaner. Was.

However, since the powder is charged by the transfer of the powder by the electromagnetic feeder, it is not possible to completely remove the powder only by wiping the powder hopper and the gutter or by suctioning and removing with a vacuum cleaner. Was. Also,
The manual wiping operation or the suction removal operation by the vacuum cleaner has prevented the series of operations of the powder supply device from being fully automated.

[0007] In a powder supply device provided with an electromagnetic feeder, the powder conveyed in the gutter scatters around, There is also a problem that the powder falling from the part scatters and is not completely contained in the receiver.

The present invention has been completed based on the above circumstances. That is, an object of the present invention is to solve the above-mentioned conventional technical problem. SUMMARY OF THE INVENTION It is an object of the present invention to remove the electric charge of a granular material charged by the vibration of an electromagnetic feeder, prevent scattering and adhesion of powder, and effectively remove residual powder adhering to a powder hopper and a gutter. It is an object of the present invention to provide a powder supply device capable of supplying the powder.

[0009]

According to the present invention, there is provided a powder hopper disposed on a vibrator and a gutter for transferring powder discharged from the powder hopper. In the powder supply device, a powder that can be inserted into the powder hopper and the gutter portion, and has an outer shape following the inner surface of the powder hopper and an outer shape following the inner surface of the gutter portion, and has a powder suction port. A powder supply device comprising a suction device, a powder hopper and a humidified air spray device for injecting humidified air into the gutter.

[0010]

In the powder supply apparatus of the present invention, the powder hopper and the gutter are arranged on the vibrator. Therefore, the powder accumulated on the powder hopper is sent out from the powder hopper to the gutter part under the vibration of the vibrator, and the powder is conveyed on the gutter part while being vibrated and sent out. .

Humidified air is injected into the powder hopper and the gutter by a humidified air spray device. Therefore, the powder is not charged despite being subjected to vibration by the vibrator. Therefore, the powder does not electrostatically adhere to the powder hopper and the inner wall of the gutter portion, and the powder does not scatter due to static electricity.

However, even if the powder is not charged, the powder adheres to the powder hopper and the inner wall of the gutter. Therefore, after the supply of the powder is completed, the powder suction device is inserted into the powder hopper and the gutter to suck the powder from the powder suction port. In this case, the outer surface of the powder suction device inserted into the powder hopper has a slight gap between the outer surface of the powder suction device and the inner wall of the powder hopper. When the outside air is sucked from the mouth, a strong suction airflow is generated from the outside of the powder hopper to the powder suction port through the gap, and residual powder adhering to the inner wall of the powder hopper together with the suction airflow is generated in the powder suction port. Is sucked into. Similarly, since the powder suction device also has an outer shape that follows the inner surface of the gutter, the outer surface of the powder suction device inserted into the gutter and the inner wall of the gutter have a slight gap. When the outside air is sucked from the powder suction port, a strong suction airflow is generated from the outside of the gutter to the powder suction port through the gap, so that the residual powder adhering to the inner wall of the gutter together with the suction airflow is powder. It is sucked into the suction port.

[0013]

An embodiment of the present invention will be described in more detail with reference to the drawings.

As shown in FIG. 1, a powder supply device 1 according to one embodiment of the present invention includes a vibrator 2, a powder hopper 3, a gutter 4, a powder suction device 5, A humidified air spray device 6 is provided as shown in FIG.

The vibrator 2 is not particularly limited, and its structure is not particularly limited as long as vibration can be imparted to the powder hopper 3 and the gutter 4, and a known vibrator may be employed. it can.

A powder hopper 3 is arranged on the vibrator 2. This powder hopper 3 is functionally
Are formed so that the powder can be discharged from the lower part thereof to the gutter part 4. In terms of form, a structure in which the powder suction device 5 can be inserted, for example, an upward opening It has a portion 8 and has a structure that narrows toward the bottom.

The gutter 4 has a function of conveying the powder 7 discharged from the opening 8 of the powder hopper 3 by the vibration of the vibrator 2, and has a bottom surface communicating with the opening 8 of the powder hopper 3. And a side surface standing on both sides of the bottom surface, and has a gutter-like shape in which the upper part is open.

The powder suction device 5 includes a powder hopper insertion portion 9
And a gutter insertion portion 10. The powder hopper insertion portion 9 has an outer surface shape that follows the inner surface shape of the powder hopper 3. When the powder hopper insertion portion 9 is inserted into the powder hopper 3, And a bottom surface facing the inner wall of the powder hopper 3. On the bottom surface of the powder hopper 3, a number of suction ports 11 are opened. When the powder hopper insertion portion 9 is inserted into the powder hopper 3, the outer wall surface of the powder hopper insertion portion 9 and the inner wall surface of the powder hopper 3 have a slight gap,
The powder hopper insertion section 9 is positioned such that the bottom of the powder hopper 3 and the bottom of the powder hopper insertion section 9 have a slight gap.
Is designed.

The gutter insertion section 10 has an outer surface shape that follows the inner surface shape of the gutter section 4, and when the gutter insertion section 10 is inserted into the gutter section 4, a bottom surface facing the bottom surface of the gutter section 4 and Gutter part 4
An outer surface facing the inner wall on both sides of the vehicle. A large number of suction ports 11 are provided on the bottom surface of the gutter 4. When the gutter section insertion section 10 is inserted into the gutter section 4, the outer wall surface of the gutter section insertion section 10 and the inner wall on both sides of the gutter section 4 have a slight gap,
Further, the configuration of the gutter insertion section 10 is designed such that the bottom surface of the gutter section 4 and the bottom surface of the gutter insertion section 10 have a slight gap.

The powder hopper insertion section 9 and the gutter section insertion section 10 may be formed separately, but in this embodiment, the powder hopper insertion section 9 and the gutter section insertion section 10 are separated from each other. It is formed integrally. Since the powder hopper insertion part 9 and the gutter part insertion part 10 can be raised and lowered at the same time by being formed integrally, a lifting mechanism (not shown).
Can be simplified.

Powder hopper insertion section 9 and gutter section insertion section 1
Numeral 0 stands above the powder hopper 3 and the gutter 4 during cleaning, and an elevating mechanism (not shown) so as to be able to descend toward the powder hopper 3 and the gutter 4 during cleaning. ) So as to be vertically movable.

The humidified air spraying device 6 is formed so that humidified air can be injected into the powder hopper 3 and the gutter portion 4, and furthermore, the vertical movement of the powder hopper insertion portion 9 and the gutter insertion portion 10 does not occur. In this embodiment, the first humidified air is opened toward the upper opening 8 of the powder hopper 3 and disposed at the side of the powder hopper 3. A mouth 12, a humidified air second injection port 13 opened toward the gutter 4 and arranged on the side of the gutter 4, a humidified air generator 14 for generating humidified air by ultrasonic vibration or the like, This humidified air generator 14
And a pipe 15 for supplying the humidified air generated in the above to the humidified air first injection port 12 and the humidified air second injection port 13.

With respect to the operation of the powder supply apparatus having the above configuration,
This will be described below.

The powder 7 is accumulated in the powder hopper 3.
Vibration is applied to the powder hopper 3 and the gutter 4 by the vibrator 2. The powder in the powder hopper 3 moves from the opening 8 to the gutter 4 by the vibration, and the powder 7 moves on the bottom surface of the gutter 4.

Humidified air is injected into the upper opening 8 of the powder hopper 3 from the humidified air first injection port 12. By spraying the humidified air on the powder accumulated in the powder hopper 3, static electricity charged on the powder by the vibration of the vibrator 2 is eliminated. Humidified air is also injected from the humidified air second injection port 13 to the gutter 4. By spraying the humidified air from the humidified air second injection port 13 on the powder moving in the gutter 4, static electricity charged on the powder by the vibration of the vibrator 2 is eliminated.

Therefore, the charged powder is not scattered, so that the powder can be supplied to the receiver in an accurate amount, and the powder can be scattered around the powder supply device and contaminated. Absent.

When the transfer of the powder from the powder hopper 3 to the receiver 16 is completed, the powder hopper insertion section 9 and the gutter section insertion section 10 are lowered, and the powder hopper insertion section is inserted into the powder hopper 3. The gutter 9 is inserted, and the gutter insertion part 10 is inserted into the gutter 4. Outside air is sucked from a suction port provided on the bottom surface of the powder hopper insertion portion 9 and a suction port provided on the bottom surface of the gutter portion insertion portion 10. At this time, the outer wall surface of the powder hopper insertion portion 9 and the inner wall surface of the powder hopper 3 have a slight gap, and the bottom surface of the powder hopper 3 and the bottom surface of the powder hopper insertion portion 9 are slightly Since there is a gap, when outside air is sucked from the suction port, a high-speed airflow that passes through the gap from outside the powder hopper 3 is generated, and the powder adhering to the inner wall surface of the powder hopper 3 guides the high-speed airflow and It is sucked into the suction port. In the gutter section 4, similarly, the gutter section insertion section 10
When the high-speed air flows through the gap between the outer wall of the gutter 4 and the inner walls on both sides of the gutter 4, powder adhering to the inner and bottom surfaces on both sides of the gutter 4 is sucked into the suction port. By performing the suction operation for a certain period of time, the residual powder adhering to the powder hopper 3 and the gutter 4 is completely removed.

According to this powder supply apparatus, despite the powder being transferred using the vibrator 2, the static electricity of the powder is effectively eliminated, and the remaining powder is easily removed by suction. Thus, even if the type of powder to be supplied is different, contamination due to the remaining powder can be effectively prevented. Moreover, since the removal of the powder is performed by combining the humidified air spray device 6 and the powder suction device 5, unlike the conventional device, the powder removal is not performed manually, so that the powder supply can be fully automated. it can.

[0029]

According to the powder supply apparatus of the present invention, the residual powder adhering to the powder hopper and the gutter is effectively removed while effectively removing the static electricity charged to the powder despite the use of the vibrator. Thus, even when different types of powder are supplied, contamination by residual powder can be prevented.

[Brief description of the drawings]

FIG. 1 is an explanatory side view showing an embodiment of the present invention.

FIG. 2 is an explanatory plan view showing an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Powder supply apparatus, 2 ... Exciter, 3 ... Powder hopper, 4 ... Gutter part, 5 ... Powder suction apparatus, 6
..Humidified air atomizer, 7 ... powder, 8 ... opening, 9 ... powder hopper insertion part, 10 ... gutter part insertion part, 11 ... suction port, 12 ... Humidified air first injection port, 13: Humidified air second injection port, 14: Humidified air generator, 15: Piping.

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Keisuke Kato 2-16-2 Noguchicho, Higashimurayama-shi, Tokyo Nikkiso Co., Ltd. Higashimurayama Works (72) Inventor Jun Tsutsumi 2-16- Noguchicho, Higashimurayama-shi, Tokyo 2 Nikkiso Co., Ltd. Higashimurayama Works (56) References Japanese Utility Model 2-1284 (JP, U) Japanese Utility Model 56-18718 (JP, U)

Claims (1)

(57) [Claims] 1. A powder supply device comprising a powder hopper disposed on a vibrator and a gutter for transferring powder discharged from the powder hopper, wherein the gutter is inserted into the powder hopper and the gutter. A powder suction device having a powder suction port provided with a powder suction port, and having an outer shape capable of imitating the inner surface of the powder hopper and the inner surface of the gutter, and injecting humidified air into the powder hopper and the gutter. And a humidified air atomizer.