JP3208708B2 - Fine powder sieving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for sifting fine powder such as cocoa and powdered sugar as decoration on a conveyed product, for example, a confectionery.

[0002]

2. Description of the Related Art A fine powder such as cocoa or powdered sugar is sifted as a decoration on the upper surface of a chocolate. This fine powder sieving apparatus vibrates a sieve frame containing fine powder with a vibration motor, and sieves fine powder such as cocoa onto a chocolate conveyed by a conveyor below the sieve frame. , To form an extremely thin fine powder layer.

In such a conventional apparatus, since the fine powder falls on a conveyed material with a width smaller than the width of the wire mesh of the sieve frame (length perpendicular to the conveying direction of the conveyor), the wire mesh is clogged. There was a drawback that the width and thickness of the fine powder layer were not constant because they were easy.

[0004]

The problem to be solved by the present invention is that the fine powder is sieved onto a conveyed product with the same width as the wire mesh, and the wire mesh is not clogged.
The purpose is to form a fine powder layer having a uniform width and thickness.

[0005]

A feature of the present invention is that a vibrating motor vibrates at substantially the same position on a wire mesh at the bottom of a sieve frame which is installed above a conveyor and accommodates fine powder and vibrates with a vibrating motor. The roller is placed perpendicular to the conveying direction of the conveyor, and a blower tube is provided for sending air for uniformly dispersing the fine powder falling from the sieve frame.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes a conveyor such as a belt conveyor capable of adjusting a conveying speed, and conveys a conveyed object 21, for example, a chocolate in the direction of an arrow in the figure. Numeral 2 is a frame, and two coil springs 3 are provided upright on the left and right frames 2 as one set. 4 are support plates provided on the left and right, and are supported above the conveyor 1 by the coil spring 3.

Reference numeral 5 denotes a vibrating plate provided orthogonal to the conveying direction of the conveyor 1, and a vibrating motor 6 is mounted thereon. 7
Is a sieve frame, a wire mesh 8 is attached to the bottom, the left and right sides are fixed to the support plate 4, the upper part is fixed to the upper plate 9, and the lower part is fixed to the lower plate 10, respectively. The rear ends of the upper plate 9 and the lower plate 10 are fixed to the diaphragm 5. Accordingly, when the vibration motor 6 is driven, the sieve frame 7 is vibrated, and the fine powder 22 stored in the sieve frame 7 can be eliminated. The wire mesh 8 is made of 24 mesh when the fine powder 22 is cocoa, and 20 mesh when it is powdered sugar.

Reference numeral 11 denotes a regulating plate, which is formed in a U-shape that opens forward, and has concave portions 11 'opposing each other on the inner left and right sides. The restriction plate 11 is removably mounted on the wire mesh 8. Reference numeral 12 denotes a roller, whose both ends are loosely fitted into the concave portions 11 'of the regulating plate 11, and are mounted on the wire net 8 at right angles to the conveying direction of the conveyor 1. The position of the roller 12 on the wire mesh 8, that is, the position at which the fine powder 22 is dropped on the conveyed object 21 can be freely selected by changing the shape of the regulating plate 11. Further, the effective width W of the wire mesh 8 is also restricted by the regulating plate 1.
1 can be freely selected by changing the shape. In the illustrated example, the thickness of the regulating plate 11 is 5 mm, and the outer diameter of the roller 12 is 2 mm.
0 mm.

Reference numeral 13 denotes a blower tube provided on the upstream side of the sieve frame 7. A plurality of blower holes 14 are provided on a rear surface of the sieve frame 7 in upper and lower stages, for example, in two stages. A plurality of wind speed adjustment holes 1 with adjustable opening
5 are provided. The blower tube 13 is erected on the frame 2 at right angles to the direction of conveyance of the conveyor 1, and the fine powder W which is sieved off by blower (not shown) or blown by an electric fan built in the blower tube 13. Then, air is blown from the group of ventilation holes 14 in parallel with the conveying direction of the conveyor 1. It is also possible to provide the blower tube 13 on the downstream side of the sieve frame 7.

When this apparatus is driven, the sieve frame 7 vibrates and the fine powder 22 is sieved from the wire mesh 8.
The wire 12 moves up and down slightly while rotating slowly due to the vibration of the sieve frame 7, so that the wire mesh 8 is constantly
You will be hit by 2. As a result, the wire mesh 8 is not clogged. Further, the fine powder 22 can be sieved on the conveyed object 21 over the entire effective width W of the wire netting 8.

However, a fine powder layer having a uniform thickness cannot be formed on the conveyed article 21 only by providing the roller 12. This is because the sieve frame 7 vibrates back and forth with a stroke of 0.5 mm, so that a thick fine powder layer is deposited directly under the wire mesh 8. In order to form a fine powder layer having a uniform thickness, it is necessary to send air to the fine powder 22 to be sieved at an extremely low wind speed.

For this purpose, a blower tube 13 is provided upstream of the sieve frame 7. According to the experiment, when the fine powder 22 is cocoa, the falling fine powder 22 is uniformly dispersed when the angle α between the descending line of the obliquely falling fine powder 22 and the vertical line is about 30. Thus, a fine powder layer having a uniform thickness can be formed. Of course, the wind speed is appropriately adjusted depending on the type and properties of the fine powder 22.

This apparatus can be applied not only to decorating confectionery but also to form a fine powder layer on the upper surface of a processed product.

[0014]

According to the present invention, a roller that moves up and down at substantially the same position is provided on the wire mesh of the sieve frame, and the fine powder that descends is evenly dispersed in the blower tube. This makes it possible to form a fine powder layer having a uniform width and thickness without sieving on a conveyed object and without causing clogging of a wire mesh.

It is economical because it can be easily implemented on existing fine powder sieving equipment.

[Brief description of the drawings]

FIG. 1 is an enlarged side view of a main part.

FIG. 2 is a side view.

FIG. 3 is a plan view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor 5 Vibration plate 6 Vibration motor 7 Sieve frame 8 Wire mesh 11 Restriction plate 12 Roller 13 Blast tube 21 Conveyed object 22 Fine powder

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A-59-169457 (JP, A) JP-A-59-198929 (JP, A) JP-A-3-98538 (JP, A) 25415 (JP, U) Fully open 1975-14893 (JP, U) Fully open 60-133794 (JP, U) Fully open 49-78591 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A23G 3/20

Claims (2)

(57) [Claims] 1. A roller, which is installed above a conveyor and vibrates at substantially the same position on a wire mesh at the bottom of a sieve frame that accommodates fine powder and vibrates with a vibrating motor, is orthogonal to the conveying direction of the conveyor. A fine powder sieving apparatus, which is provided with a blower tube for sending air for uniformly dispersing the fine powder falling from the sieving frame. 2. The fine powder sieving apparatus according to claim 1, wherein a regulating plate provided with a concave portion into which both ends of the roller are loosely fitted is placed on the wire netting.