JPH0423846Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for preventing powder and granule from adhering to the inner surface of a chute that guides the powder and granule.

[Prior Art] Conventionally, there has been known a coffee bean pulverizer that grinds coffee beans to produce granules and guides the granules to a predetermined position, such as a discharge port, using a chute. For example, see Utility Model Publication No. 56-8369). In this case, powder particles tend to adhere to the inner surface of the chute due to static electricity, moisture, etc. If powder or granules adhere to the inner surface of the chute, variations may occur in the amount of powder or granules carried out, or in the worst case scenario, the powder or granules may clog the chute. In addition, the adhering powder and granules deteriorate over time due to moisture, which is unfavorable from a sanitary standpoint. In order to remove powder particles adhering to the inner surface of the chute, the publication proposes that an actuating member be opposed to the outer surface of the chute, and the actuating member be reciprocated linearly by a drive device so as to hit the chute. ing. According to this, the vibration of the chute generated when the actuating member is struck against the chute can be expected to have a certain degree of powder removal effect.

[Problems to be solved by the invention] However, if the actuating member is simply reciprocated in a straight line and struck the chute as in the publication, one operation of the drive device will only strike the chute once. Moreover, since the chute vibration is only very simple, it is not sufficient to remove the powder particles adhering to the inner surface of the chute.

Therefore, an object of the present invention is to provide a powder adhesion prevention device that effectively removes powder adhering to the inner surface of a chute.

[Means for Solving the Problems] According to the present invention, there is provided a powder adhesion prevention device in which an actuating member is struck against the outer surface of a chute that guides powder and granular material to drop raw material adhering to the inner surface of the chute. The actuating member is provided with a fulcrum that rotatably supports the actuating member, and a drive device that reciprocates the actuating member about the fulcrum, and the actuating member is mounted at a plurality of different locations on the outer surface of the chute. There is obtained a particle adhesion prevention device characterized in that it has a plurality of opposing mallet parts, and the plurality of mallet parts strike the chute with a time difference during reciprocating rotation by the drive device.

[Function] In this powder adhesion prevention device, when the actuating member is reciprocated once by the driving device,
The plurality of mallet parts hit the outer surface of the chute multiple times,
What's more, they start hitting multiple different locations.
As a result, the chute undergoes multiple complex vibrations. Therefore, the powder adhering to the inner surface of the chute is effectively peeled off.

[Embodiment] FIG. 1 shows a powder adhesion prevention device according to an embodiment of the present invention in relation to a chute 1. Shoot 1
is a vertically extending stainless steel cylinder that guides the powder. The powder may be coffee powder made by grinding coffee beans. Here, it is assumed that the powder and granular material is stored in a storage (not shown). The powder and granular material carried out from the storage is supplied to the upper end of the chute 1, passes through the chute 1, is sent to a mixing bowl (not shown), etc., is dissolved in hot water, and is poured into a cup or the like.

An actuating member 2 is provided at a position facing the outer surface of the chute 1 . The actuating member 2 is rotatably supported on a horizontal fixed fulcrum 3. The actuating member 2 is formed with first and second mallet portions 4 and 5 that face the lower and upper portions of the chute 1, respectively.

A movable core of an electromagnetic solenoid 6 is connected to the actuating member 2 through a connecting portion 7 . The electromagnetic solenoid 6 applies a rotational force in a counterclockwise direction about the fixed fulcrum 3 to the actuating member 2 when energized. The actuating member 2 is further connected to a spring 8 that constantly urges the actuating member 2 in a clockwise direction. The electromagnetic solenoid 6 and spring 8 are collectively referred to as a drive device herein.

Normally, due to the biasing force of the spring 8, the first mallet portion 4 of the actuating member 2 is in contact with the outer surface of the chute 1, as shown in the figure. Now, electromagnetic solenoid 6
When energized, the actuating member 2 rotates counterclockwise about the fixed fulcrum 3, and as a result, the second mallet portion 5 strikes the outer surface of the chute 1. Next, when the electromagnetic solenoid 6 is de-energized, the actuating member 2 is rotated clockwise by the biasing force of the spring 8.
As a result, the first mallet portion 4 strikes the outer surface of the chute 1. In this way, by energizing the electromagnetic solenoid 6 once, the actuating member 2 strikes the outer surface of the chute 1 twice, and at two different locations. Therefore shoot 1
Powder adhering to the inner surface of the container is effectively peeled off.

FIG. 2 shows a powder adhesion prevention device according to another embodiment of the present invention. This powder adhesion prevention device further includes an additional actuation member 12 that is rotatable about a horizontal additional fixed fulcrum 11 . Additional actuation member 12
An elongated hole 13 is formed at the one-turn end. The additional actuating member 12 is connected to the actuating member 2 by inserting the pin 14 attached to the second mallet portion 5 of the actuating member 2 into the elongated hole 13. The other rotating end of the additional actuating member 12 becomes the third mallet portion 15 .

When the drive device is started, the additional actuating member 12 also rotates in the opposite direction to the actuating member 2 about the additional fixed fulcrum 11 in accordance with the actuating member 2 . As a result, a state in which the first and third mallet parts 4 and 15 simultaneously strike the outer surface of the chute 1 and a state in which only the second mallet part 5 strikes the outer surface of the chute 1 occur alternately.
In this manner, by energizing the electromagnetic solenoid 6 once, the actuating member 2 strikes the outer surface of the chute 1 twice, at three different locations. Therefore, even in the case of a long chute 1, the powder adhering to the inner surface of the chute 1 is effectively peeled off.

Note that it is preferable that the electromagnetic solenoid 6 is energized every time the powder or granular material is supplied to the chute 1.

Alternatively, a coffee extractor may be provided at the outlet of the chute 1, and the coffee extracted there may be supplied to a mixing bowl or the like.

The above-described powder adhesion prevention device is suitable for being incorporated into a coffee vending machine.

[Effects of the Invention] As described above, according to the particle adhesion prevention device according to the present invention, the chute generates multiple complex vibrations each time the drive device is started. Therefore, the powder adhering to the inner surface of the chute is effectively peeled off.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the structure of a powder adhesion prevention device according to an embodiment of the present invention in relation to a chute;
FIG. 2 is an explanatory diagram showing the structure of a powder adhesion prevention device according to another embodiment of the present invention in relation to a chute. DESCRIPTION OF SYMBOLS 1... Chute, 2... Operating member, 3... Fixed fulcrum, 4... First mallet part, 5... Second mallet part, 6
...Electromagnetic solenoid, 8...Spring, 11...
...Additional fixed fulcrum, 12...Additional operating member, 15...
...Third Tsuchibu.

Claims (1)

[Scope of utility model registration request] A powder adhesion prevention device in which an actuating member is struck against the outer surface of a chute that guides the powder to remove raw material adhering to the inner surface of the chute; a drive device for reciprocating the actuating member about a fulcrum, the actuating member having a plurality of mallet portions facing each other at a plurality of different locations on the outer surface of the chute; A powder adhesion prevention device characterized in that the plurality of mallet parts strike the chute with a time difference during operation.