JPH06135489A - Device for feeding particle - Google Patents

Abstract

PURPOSE:To prevent particles from being crushed or consolidated and further prevent the size of a device from becoming larger. CONSTITUTION:In a device, wherein particles stored in a hopper 10 are fed into a container 20, installed below the hopper 10, a lifting mechanism 40 which lifts or lowers the container 20 or hopper 10 as the particles are fed is provided, and at a delivery port 11 of the hopper 10, there is provided a cylindrical chute 30 which can go into the container 20 and a sliding plate 31 having a helical shape is provided in the chute 30 to allow the particles to flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for charging powder particles stored in a hopper into a container installed below the hopper.

[0002]

2. Description of the Related Art FIG. 7 is a front view showing an example of a conventional powder and granular material charging device. This apparatus drops particles in the hopper 1 into a container 2 installed below the hopper 1 from a discharge port 1a of the hopper 1 positioned so as to face an input port 2a of the container 2. It is something to throw in. However, in this device, since the powdery particles are dropped from a high place onto the bottom surface 2b of the container 2, the powdery particles are crushed or compaction occurs at the dropping point. The properties of the stored particles are container 2
There was a problem that it changed depending on what was thrown into.

Therefore, as shown in FIG. 8, a cylindrical chute 3 having an inclined portion 3a is provided at the discharge port 1a of the hopper 1, and the inlet 2a of the container 2 is positioned at the tip of the inclined portion 3a of the chute 3. There is a powdery or granular material charging device that gently charges the powdery or granular material from the hopper 1 to the container 2. However, in this device, since the chute 3 has the inclined portion 3a, a large installation space is required, a mechanism for inclining the container 2 is also required, and there is a problem that the entire device becomes bulky.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a powdery or granular material charging device which can prevent the powdery or granular material from being crushed or compacted, and can also prevent the entire device from becoming large.

[0005]

[Means for Achieving the Object] A powder or granular material charging device of the present invention is a device for charging a powder or granular material stored in a hopper into a container installed below the hopper. Equipped with a lifting mechanism that raises and lowers as the body is thrown in, the discharge port of the hopper is provided with a cylindrical chute that can enter the container, and inside the cylindrical chute,
It is characterized in that a sliding surface for flowing the powder is provided spirally.

[0006]

[Function] When the granular material in the hopper flows into the cylindrical chute, it flows on the sliding surface provided in a spiral shape and moves downward, and is discharged into the container from the discharge port of the cylindrical chute. To be done. At this time, the discharging speed of the granular material is slow because it flows on the sliding surface.

By the elevating mechanism, the hopper is lowered or the container is raised so that the cylindrical chute enters the container, and the discharge port of the cylindrical chute is set at a position slightly apart from the bottom surface of the container. Then, the impact on the powder particles discharged from the discharge port of the cylindrical chute into the container at the start of charging becomes small. The charged particles are accumulated in the container, but the lifting mechanism raises the hopper or lowers the container to prevent the accumulated particles from blocking the outlet of the cylindrical chute. ,
The input of powder is continued. If the ascending / descending speed of the elevating mechanism is set to a constant value based on the amount of powder particles dropped per hour, the distance between the discharge port of the cylindrical chute and the accumulated powder particles will be small during continuous charging. The impact on the powder and granules during continuous charging remains small.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are front views sequentially showing the operating states of the powdery or granular material charging device of the embodiment of the present invention. 10 is a hopper,
20 is a container, 30 is a cylindrical chute, and 40 is a lifting mechanism. The hopper 10 is placed on the load cell 50, and the amount of powder or granular material in the hopper 10 is measured by the load cell 50. Container 20 is hopper 1
It is placed on the table 41 of the elevating mechanism 40 installed below 0 and is moved up and down with the operation of the elevating mechanism 40.

The tubular chute 30 is detachably mounted on the discharge port 11 of the hopper 10. Inside the cylindrical chute 30, a spiral sliding surface 31 as shown in FIG. 4 is provided. The sliding surface 31 is continuous. FIG. 5 is a view on arrow V in FIG. Note that FIG. 4 is a perspective view showing the inside of the cylindrical chute 30. The discharge port 11 is provided with a valve mechanism 61 for opening and closing the discharge port 11, and a vibrator 62 for vibrating the discharge port 11 and thus the cylindrical chute 30.

A control device 70 for controlling the operation of the lifting mechanism 40 is connected to the lifting mechanism 40. The control device 70 sets the distance between the discharge port 32 of the cylindrical chute 30 and the bottom surface 21 of the container 20 to L (FIG. 2) at the start of the charging of the powder and granules, and with the passage of time from the start of the charging. Table 41
That is, the container 20 is gradually lowered at a constant speed,
Control is performed so that the distance between the discharge port 32 of the cylindrical chute 30 and the powder particles that are charged and accumulated is maintained constant. The speed at which the table 41 is lowered is set on the basis of the amount of powder or granular material dropped per time, which is previously obtained by experiments. The interval L is so large that the impact of the powder particles discharged at the start of charging is minimized and the discharge port 32 is not immediately blocked by the powder particles discharged at the start of charging and accumulated. Is set to

Next, the operation of the powdery or granular material charging device having the above construction will be described. First, as shown in FIG.
The container 20 placed on the top of the cylindrical chute 30 is operated by the control device 70 to operate the elevating mechanism 40 to raise the container 20.
2 is introduced into the container 20, and the gap between the discharge port 32 of the cylindrical chute 30 and the bottom surface 21 of the container 20 is set to L as shown in FIG. The container 20 is unloaded from a warehouse or the like by a stacker crane or the like, placed on a belt conveyor or the like and transported, and the lid is opened in the middle thereof and placed on the table 41. On the other hand, in the hopper 10,
A predetermined amount of powder or granular material measured by the load cell 50 is stored.

Next, the valve mechanism 61 is operated to operate the discharge port 11
And the vibrator 62 is operated. Hopper 10
The granular material flowing into the cylindrical chute 30 through the discharge port 11 moves downward while flowing on the spiral sliding surface 31, and is discharged into the container 20 from the discharge port 32. As a result, loading into the container 20 from the hopper 10 is started. Since the interval L is set as described above, the impact of the powder particles at the start of charging is small.

At the same time when the introduction of the powder or granular material is started, the control device 70
The lifting mechanism 40 is operated by the following, and as shown in FIG.
The table 41, that is, the container 20 is gradually lowered. After the start of charging, the granular material gradually accumulates in the container 20 with the lapse of time, but the table 41 gradually descends under the control of the control device 70. The gap between the charged and deposited powder and granules is kept small and constant. Therefore, the outlet 3
The impact of the powder particles continuously discharged from No. 2 remains small.

Moreover, since the powder particles passing through the cylindrical chute 30 flow on the spiral sliding surface 31, the powder particles discharged from the discharge port 32 into the container 20 have a slow discharge speed. It is a kana. This also allows the outlet 3
The impact of the powder particles discharged from the container 2 into the container 20 is small.

Since the cylindrical chute 30 is vibrated by the vibrator 62 in the process of charging the powdery particles, the powdery particles in the cylindrical chute 30 smoothly flow without staying on the sliding surface 31. Go. Therefore, the amount of the powder or granules discharged from the discharge port 32 is always constant, and the control by the control device 70 that performs control based on the lapse of time from the start of charging surely exhibits the above-described action. Become.

As described above, according to the powdery or granular material charging device of the present embodiment, the impact on the powdery or granular material can be reduced from the start of charging, and therefore the powdery material is crushed by the charging or the powdered powdered material is charged. It is possible to prevent compaction of the granules. In particular, a spiral sliding surface 31 is provided in the cylindrical chute 30,
Since the discharge from the discharge port 32 is made gentle, the above effect can be remarkably exhibited.

Since the tubular chute 30 is detachable, it can be changed to one having a sliding surface 31 that is suitable for the properties of the powder and granules and can be easily washed.

Further, since the cylindrical chute 30 is vertically installed, only the hopper 10 or the container 20 is moved up and down, the control device 70 is small, and a device requiring a lateral space or a lateral direction is required. Since there is no movement to, the whole device will not be a big deal.

[0019]

[Another embodiment]

(1) The control device 70 of the above-described embodiment performs control based on the lapse of time from the start of charging, but instead performs control based on the decrease of the powder or granular material from the hopper 10. May be used.

(2) As shown in FIG. 6, the hopper 10 may be moved up and down. In FIG. 6, the container 2
0 is mounted on the load cell 50, and the controller 70
Is for controlling the lifting and lowering of the hopper 10 based on the amount of powder and granules put into the container 20. Of course, as the control device 70, a device that controls based on the lapse of time from the start of charging may be used.

(3) The sliding surface 31 of the above embodiment is continuous, but instead of this, a spiral but discontinuous one is used, or a plurality of eaves of arbitrary shape are used. Even if it is provided, the discharge of the powder or granular material from the discharge port 32 can be made gentle.

(4) The vibrator 62 does not necessarily have to be provided.

[0023]

As described above, the powdery- or granular-material feeding device of the present invention is a device for charging the powdery- or granular material stored in the hopper 10 into the container 20 installed below the hopper 10. Alternatively, since the hopper 10 is provided with the elevating mechanism 40 that elevates and lowers as the powder and granules are charged, the impact that the powder and granules receive from the start of charging can be reduced,
It is possible to prevent crushing of the powder or granules caused by charging and compaction of the charged powder or granules. In particular, the hopper 10
The discharge port 11 is provided with a cylindrical chute 30 that can enter the container 20, and the cylindrical chute 30 is provided with a sliding surface 31 in a spiral shape for flowing the granular material. Therefore, the discharge from the discharge port 32 can be made gentle, and the above effect can be remarkably exhibited.

[Brief description of drawings]

FIG. 1 is a front view showing one operating state of a powdery or granular material charging device of the present invention.

FIG. 2 is a front view showing one operating state of the powdery or granular material charging device of the present invention.

FIG. 3 is a front view showing one operating state of the powdery or granular material charging device of the present invention.

FIG. 4 is a perspective view showing a cylindrical chute of the powdery or granular material charging device of the present invention.

5 is a view on arrow V in FIG. 4. FIG.

FIG. 6 is a front view showing one operating state of the powdery or granular material charging device of another embodiment of the present invention.

FIG. 7 is a front view showing one operating state of a conventional powdery or granular material charging device.

FIG. 8 is a front view showing one operating state of another conventional powder and granular material introducing apparatus.

[Explanation of symbols]

 10 Hopper 20 Container 30 Cylindrical Chute 31 Sliding Surface 40 Lifting Mechanism

Claims (1)

[Claims] 1. An apparatus for charging powder particles stored in a hopper into a container installed below the hopper,
Equipped with an elevating mechanism that raises and lowers the container or hopper as the powder and granules are charged.The discharge port of the hopper is provided with a cylindrical chute that can enter the container. A powder / granule feeding device, characterized in that a sliding surface for flowing the granules is provided in a spiral shape.