JPH0632432U - Powder feeder - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a device for feeding powder that easily adheres to a container having a narrow mouth. [Structure] A vertically standing pipe is provided at the outlet of the powder supply path, the lower end of the pipe is inserted into the mouth of the container, and a wire for rotating and sliding on the inner peripheral surface of the pipe is provided to adhere to the inner peripheral surface. Try to scrape off the powder.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder feeder that transports powder from a tank such as a hopper and supplies it to a small container or the like.

[0002]

[Prior art]

 Powder feeders that store powder in tanks such as hoppers, transport the required amount from the tank, and supply it to specified containers are used in many fields. This powder feeder is roughly classified into (1) a vibration feeder that vibrates the powder supply path to move the powder in a fixed amount as shown in FIG. 3, (2) a belt feeder that moves the powder on a belt, (3) There is a table feeder that supplies a fixed amount of powder by rotating the disk and scraper, and (4) a screw feeder that moves the powder by the pushing action of the screw provided in the powder supply path as shown in FIG. However, each has its own strengths and weaknesses, so it was used for different purposes.

[0003]

[Problems to be solved by the device]

 When bottling powder into bottles or bags, the bottle or bag to be packed may have a small mouth. In this case, it is necessary to prevent the powder from spilling from the mouth of the bottle or bag when supplying the powder to these containers. Conventionally, this is one of the screw feeder methods as shown in Fig. 5. A vertical type with screws (auger type) was generally used.

However, some powders have adhesiveness, and in this case, in the screw feeder system, the powders adhere to the screw surface, which makes it difficult for the powders to flow, and sometimes causes clogging. In some cases, there was a problem that supply became impossible. Moreover, this method cannot be used when a fixed amount of powder needs to be supplied because the amount of powder supplied fluctuates with time even if it is not clogged and the powder adheres and detaches irregularly.

On the other hand, there is a vibrating feeder method as a method that is relatively insensitive to adhesion. However, it was difficult to supply the vibrating feeder method to a small mouth such as a bottle or a bag without spilling.

The present invention solves the above problems and provides a powder feeder capable of feeding powder with strong adhesion to a place with a small mouth such as a bottle or bag without spilling. To aim.

[0007]

[Means for Solving the Problems]

 The present invention, which has been made to solve the above problem, includes a powder tank and a powder supply path, and is a powder for supplying the powder sent from the powder tank to a container or the like through the powder supply path. In the body feeder, (1) a vertically standing pipe in which an upper surface is closed, a lower surface is opened, and an outlet of the powder supply path is connected to a powder inlet provided on a side surface near the upper surface, 2) A wire stretched in a U shape so as to slightly contact the inner peripheral surface of the pipe, and (3) a motor for driving the wire to rotate around the longitudinal axis of the pipe. It is characterized in that the powder supplied from the powder introduction port is prevented from adhering to the inner peripheral surface of the pipe by swirling along the pipe while dropping the powder from the lower surface of the pipe.

The operation of the powder feeder having this structure will be described below.

[0009]

[Action]

 In the powder feeder of the present invention, the powder sent from the powder tank through the powder supply path is introduced into the powder introduction port of the vertically standing pipe connected to the powder supply path outlet. Be done. If the lower end of the pipe is inserted into a powder collection container such as a bottle in advance, the powder introduced into the pipe will fall into the pipe and be put into the powder collection container without spilling to the outside. . At this time, some of the strongly adherent powder adheres to the inner peripheral surface of the pipe, but the adhered powder can be forcibly dropped by rubbing the inner peripheral surface of the pipe with the wire. The powder that adheres to the wire itself does not adhere because the wire itself is rubbed by the inner peripheral surface and is subjected to vibration. As a result, powder can be supplied to a container such as a bottle without causing problems such as powder adhesion and pipe clogging.

[0010]

【Example】

 Hereinafter, the present invention will be described with reference to the drawings as an embodiment of a bottling and weighing device.

FIG. 1 is a sectional view of an apparatus of a powder feeder showing an embodiment according to the present invention, and FIG. 2 is an exploded view of a pipe portion provided at an outlet of a powder feeding passage which is a characteristic portion of the apparatus. A figure (however, the upper surface is omitted) is shown.

The powder feeder is a hopper 10 for storing powder, a powder supply path 20 connected to an outlet of the hopper 10, and a vertical stand connected to an outlet of the powder supply path 20. It is mainly composed of the pipe 30. The hopper 10 is provided with a stirrer 12 driven by a motor 11 and a knocker 13 for giving a vibration, and by these operations, powder adhesion in the hopper 10 is prevented. In this embodiment, the powder feeder 20 connected to the discharge port of the hopper 10 employs a vibration feeder system in which powder is relatively unlikely to adhere. Therefore, the vibrator 21 for vibrating the powder feeder 20 is used. Is attached to the outer peripheral wall of the powder supply passage 20, and a gate 22 for adjusting the powder flow rate is provided inside the powder supply passage 20. A pipe 30 is connected to the outlet side of the powder supply passage 20. The pipe 30 has an upper surface closed and a lower surface opened, and the powder supply passage 20 is connected to a powder introduction port 31 provided on the upper surface side surface of the pipe 30 and is installed in the vertical direction. Inside the pipe 30, there is a wire 32 that rotates while making a slight contact with the inner peripheral surface of the pipe 30.

The lower end of the pipe 30 is inserted into the mouth of a bottle 41 which is a powder collection container. The bottle 41 is placed on a scale 42 and its weight is measured. The scale 42 is provided with an elevating device 43 for elevating the bottle 41 and the scale 42.

In the powder feeder configured as described above, the powder stored in the hopper 10 is sequentially discharged from the discharge port by the operation of the stirrer 12 rotated by the motor 11 and the knocker 13 that vibrates the hopper 13. Sent out. The powder sent to the powder supply path 20 is sent to the downstream direction by the vibration of the vibrator 21, and the amount of the powder sent to the downstream is controlled by the intensity of this vibration and the clearance adjustment of the gate 22. In the powder feeder 20 of the vibrating feeder system, powder adhesion is relatively unlikely to occur, but it is desirable to make the length of the conduit as short as possible in order to further reduce the adhesion. The powder that has reached the outlet of the powder supply passage 20 enters the powder introduction port 31 of the vertically standing pipe 30. Most of the powder that has entered the pipe 30 drops directly because the pipe 30 itself is peeled vertically, but some of the powder may adhere to the inner peripheral surface of the pipe 30. The adhered powder is immediately scraped off by the wire 32. That is, in the pipe 30, there is the wire 32 rotated by the motor 33, and since the inner peripheral surface of the pipe is rubbed, the powder adhered to the inner peripheral surface immediately drops. The dropped powder is collected in the bottle 41 without spilling to the outside. Then, a predetermined weight of powder is weighed by the balance 42, the motor 11, the knocker 13, the vibrator 21, and the motor 33 are stopped to stop the powder supply, and the lifting device 43 is operated downward. The pipe 30 is pulled out from the bottle 41, the bottle is carried out by a transport mechanism (not shown), the next new bottle is replaced, and the elevating device is actuated again to insert the pipe 30 into the bottle. Through this series of operations, a fixed amount of powder is supplied into the bottle one after another.

In this embodiment, the pipe 30 has a simple linear shape, but it is not limited to this. When the collection container has a narrower opening, a tapered pipe 30a having a two-stage shape with a pipe having a small diameter may be used as shown in FIG. At this time, the wire 32 is also tapered to match the pipe shape. In short, adhesion does not occur if a wire shape that matches the tube shape is used. Further, although the vibrating feeder system is adopted for the powder supply passage 20, other forms may be used. Furthermore, although the wire shape used a loop shape in the embodiment, the shape is not limited to this, and a wire having a cross-shaped support wire portion in the loop or a wire having a straight shape instead of a loop may be used. May be

[0016]

[Effect of device]

 As described in detail above, according to the present invention, when a powder having strong adhesion is bottled and bagged, the powder is not spilled to the outside and the powder does not adhere to the pipe line. Can be supplied in bottles and bags. The above-mentioned effects of the present invention are more remarkable as the container has a narrow mouth. The reason for this is that the powder having strong adhesiveness is more likely to adhere to the smaller diameter of the conduit and is more likely to be clogged. In the past, it was not possible to supply powder with strong adhesion through a thin pipe, but this invention made it possible. In addition, the fluctuation of the powder supply amount due to the irregular adhesion and detachment of the powder was reduced, and it became possible to supply the powder quantitatively. Furthermore, if the container is a bag with a seal on the top, it will be difficult to seal if powder adheres to the seal on the top of the bag, but the tip of the pipe of the present invention should be placed below the seal. For example, it can be supplied without sticking to the seal part.

[Brief description of drawings]

FIG. 1 is a sectional view of a powder feeder according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the pipe part, which is a main part of FIG. 1 (however, the upper surface is omitted).

FIG. 3 is a schematic view of a powder feeder of a vibration feeder system which is a conventional example.

FIG. 4 is a schematic view of a screw feeder type powder feeder which is a conventional example.

FIG. 5 is a schematic diagram of a vertical screw feeder type (auger type) powder feeder that is a conventional example.

FIG. 6 is a sectional view of a pipe portion of a powder feeder according to another embodiment of the present invention.

[Explanation of symbols]

 10: Hopper 20: Powder supply path 21: Vibrator 30: Pipe 31: Powder introduction port 32: Wire 33: Motor

Claims (1)

[Scope of utility model registration request] 1. A powder feeder comprising a powder tank and a powder supply path for supplying the powder sent from the powder tank to a container or the like via the powder supply path. And a vertically standing pipe whose lower surface is opened and whose lower surface is opened and whose outlet of the powder supply path is connected to the powder inlet provided on the side surface near the upper surface (2) A wire extending in a U-shape so as to come into contact with the powder, and (3) a motor for driving the wire to rotate around the longitudinal axis of the pipe, and by rotating the wire along the inner peripheral surface of the pipe, powder A powder feeder, characterized in that the powder supplied from an inlet is dropped from the lower surface of the pipe while preventing the powder from adhering to the inner peripheral surface of the pipe.