JP5865649B2 - Hopper for vibration feeder - Google Patents

Description

  The present invention relates to a hopper for a vibration feeder that can prevent stagnation in a hopper when quantitatively supplying a wet powder granule such as a soy sauce-rich raw material or a raw material for seed culturing.

Conventionally, at least one hopper internal folding part 3 that folds and protrudes at a certain angle with respect to the hopper inside is formed on the hopper front side wall 1 of the hopper used in the vibration feeder as shown in FIGS. 5 and 6. (See, for example, Patent Document 1). And it is disclosed that according to this apparatus, the bridge | bridging of a granular material can be prevented.
However, when wet powder is used in these apparatuses, there is a disadvantage that the wet powder stays in the hopper. In particular, the soy sauce mashing raw material, which is a wet powder, contains abundant nutrient sources suitable for the growth of microorganisms, so when handling it in an open system, it must be transported and supplied without staying in the target container. If it is, it will be contaminated by bacteria such as bacteria falling in the air.

Japanese Utility Model Publication 3-44737

  This invention makes it a subject to provide the hopper for vibration feeders which can prevent a residence in a hopper when supplying wet powder granules, such as a soy sauce koji rich raw material or a raw material for seed potato cultivation, quantitatively.

  This invention is for solving such a problem, and is a hopper for a vibration feeder shown below.

(1) A hopper for a vibration feeder that supplies a transported object to a vibration feeder that transports the transported object in the transport direction, the front side wall 1 intersecting the transport direction, and a side wall 4 connected to the front side wall 1 The front side wall 1 is formed with a folded portion 3 that is folded and projected into the hopper, and the interval between the side walls 4 and 5 becomes narrower in the direction opposite to the transport direction. This is a vibration feeder hopper.
(2) The hopper for a vibration feeder according to (1) above, wherein the corners 6, 7, and 8 of the inner peripheral side wall of the hopper body have an arc shape.
(3) The vibration feeder gives the hopper main body A, the inclined trough B provided below the hopper main body A, and the mechanical vibration of the trough B subjected to vertical movement, and throws the conveyed object forward. the consisting of electromotive vibration device C for conveyance supply (1) or (2) the vibrating feeder hoppers described.
(4) The hopper for a vibration feeder according to (3), wherein the conveyed object is a wet powder body containing 35 to 50% (w / w) of moisture.
(5) The hopper for a vibration feeder according to (4), wherein the wet granular material is a soy sauce-mixed raw material or a seed culturing raw material.

  According to the present invention, it is possible to provide a hopper for a vibration feeder that can prevent stagnation in a hopper when quantitatively supplying wet powder particles such as a soy sauce mashing raw material or a seed potato cultivation raw material.

It is a schematic explanatory front view of the fixed quantity supply apparatus using the hopper for vibration feeders of this invention. It is a schematic explanatory perspective view of the fixed_quantity | feed_rate supply apparatus using the hopper for vibration feeders of this invention. It is a schematic explanatory perspective view showing a hopper for a vibration feeder of the present invention. It is a cross-sectional view of a hopper for a vibration feeder showing another embodiment of the present invention. It is a schematic explanatory perspective view showing a conventional hopper for a vibration feeder. It is the cross-sectional view which showed the conventional hopper for vibration feeders.

  Hereinafter, the hopper for a vibration feeder according to the present invention will be described with reference to the drawings, taking as an example the quantitative supply of the soy sauce-mixed raw material.

In FIG. 1, a vibration feeder D is provided with a hopper main body A, an inclined trough B provided below the hopper A, and a vibration with mechanical vertical motion applied to the trough B, throwing material forward, It is a vibration feeder comprising a vibration generator C for moving and supplying.
Reference numeral 9 denotes a belt conveyor which is driven to rotate by a driving device (not shown for simplicity of illustration). Reference numeral 10 denotes a flat container (for example, a lid).

  The hopper body A of the present invention includes a front side wall 1 and side walls 4 and 5 connected to the front side wall as shown in FIGS. 3 and 4, and a central portion 2 of the front side wall 1 is provided inside the hopper. The folding part 3 which protruded by folding is formed, and the space | interval of the side walls 4 and 5 is the shape comprised so that it might become narrow gradually as it leaves | separates from the front side wall 1. FIG.

  In the hopper of FIG. 4, the corners 6, 7, and 8 of the inner peripheral side wall of the hopper main body A have an acute angle. However, as shown in FIG. It is preferable because the raw material can be discharged smoothly. In addition, it is more preferable to also make the front-end | tip part of the hopper internal folding part 3 into circular arc shape as needed.

  The hopper body A is directed to the trough B at a predetermined distance so that the front side wall 1 faces the conveyance direction and the lower end of the discharge port can discharge the raw material in the hopper quantitatively. It is located apart.

  The trough B is preferably inclined so that the depression angle is 5 to 15 degrees, preferably 8 to 12 degrees.

  The wet granular material in the present invention refers to a product obtained by adding moisture to cereals such as soybeans and wheat. In addition, the soy sauce mash-filled raw material is a product obtained by treating cereals such as soybeans, wheat, rice, etc. by steaming or other methods, or further inoculating seed pods. This is a mixture of raw materials such as fried rice crackers and mixed water.

  Hereinafter, the present invention will be described more specifically with reference to examples.

(1) Preparation of soy sauce mashing raw material 130% (w / w) of 80 ° C. warm water is added to 10 kg of defatted processed soybeans, and steamed under pressure using saturated steam at a pressure of 2 kg / cm ² (gauge pressure) for 20 minutes. did. On the other hand, 10 kg of raw wheat was cracked according to a conventional method. Next, these two treatment raw materials were mixed to adjust the water content to about 40% (w / w).
Next, 0.1% (w / w) of Aspergillus oryzae (ATCC 14895) bran seed meal (effective spore number: 1 × 10 ⁹ / g) was inoculated to prepare a soy sauce-rich material.

(2) Vibration Feeder Hopper As shown in FIG. 4, the cross-sectional shape is an isosceles triangle having a base of 12 cm and a height of 8 cm, and the cross-sectional shape is a base of 2 cm and a height at the center 2 of the base of the isosceles triangle. The hopper main body A of the present invention was provided with a 2 cm-long isosceles triangular hopper inner folding part 3 and having a hopper upper end part and a lower end part having the same cross section (46 cm ² ) and a height of 40 cm.

(3) Vibration Feeder As shown in FIG. 1, a stainless steel trough B having a width of 15 cm, a depth of 7 cm, and a length of 100 cm is installed with an inclination angle of 10 degrees, and the vibrator (Shinko Seiki Co., Ltd.) is used as the vibration generator C. Two units (manufactured by LF-25) were installed in series under the trough B. Moreover, the hopper main body A turned the front side wall 1 in the conveyance direction, and held the discharge port lower end surface at a distance of 2 cm from the trough B to constitute the vibration feeder D.

(4) Operation of the vibratory feeder Next, the soy sauce koji filling raw material is charged up to a height of 25 cm from the lower end surface of the discharge port of the hopper body A, and then the soy sauce koji filling raw material colored with a red powder dye is added. The soy sauce mashing raw material layer which was charged and color-coded in the hopper was formed.
Subsequently, the operation of the apparatus was started, and the soy sauce-rich material was slowly moved toward the outlet by the slight vibration of trough B, so that the soy sauce-stuffed material was quantitatively supplied.

(Confirmation of effect)
In Example 1 above, switching from the uncolored raw material to the red colored raw material was observed.
As a result, about 30 seconds after the start of operation, a part of the red-colored raw material starts to be mixed with the non-colored raw material from the vicinity of the lower end portion of the hopper front side wall 1, and after 5 seconds, the lower end of the front end portion of the hopper rear corner 7 The red colored raw material started to appear from the vicinity of the part, and the whole became a red colored raw material, and there was no uncolored raw material at all.
That is, it was found that the time required for switching from the uncolored raw material to the red colored raw material was 5 seconds, and there was almost no retention of the soy sauce-rich raw material.

(Comparative Example 1)
For comparison, the switching from the uncolored raw material to the red colored raw material was observed in exactly the same manner except that the hopper body of FIG. 6 (hereinafter referred to as the conventional hopper) was used instead of the hopper main body A of FIG.
As a result, after about 90 seconds from the start of operation, a part of the red colored raw material starts to come out of the hopper mixed with the non-colored raw material from the vicinity of the lower end portion of the hopper front side wall 1, and from the vicinity of the lower end portion of the hopper rear portion 11 after 60 seconds. However, red-colored raw materials started to appear, and the whole became red-colored raw materials.
That is, the time required for switching from the non-colored raw material to the red colored raw material is 60 seconds in the conventional hopper, and it can be seen that there is a twelve times larger residence than the 5 seconds of the present invention.

(Conventional hopper)
As shown in FIG. 6, the shape of the cross section is a rectangle with a long side of 12 cm and a short side of 8 cm, and the inside of the hopper is folded into an isosceles triangle with a base of 2 cm and a height of 2 cm at the center 2 of one long side of the rectangle. Part 3 was provided, and a conventional hopper having a cylindrical shape with a cross section (94 cm ² ) of the upper end portion and the lower end portion of the hopper having the same shape and a height of 40 cm was configured.

(Difference in effect between the present invention and the comparative example)
In the vibration feeder, even if the hopper front side wall 1 has the hopper internal folding part 3 that folds into the hopper and protrudes, the hopper rear is formed of three side walls as in the comparative example. In the hopper, it is found that, when a wet granular material such as a soy sauce mashing raw material is used as a raw material, the raw material stays in the hopper.
On the other hand, a hopper internal folding part 3 is formed in the central part 2 of the hopper front side wall 1 of the hopper main body A so as to be folded into the hopper, and the side walls 4 and 5 become narrower as the distance from the front side wall 1 increases. When the configured hopper for a vibration feeder according to the present invention is used, it can be seen that retention can be prevented in the hopper.

  The vibratory feeder was operated in the same manner except that the soy sauce-rich raw material of Example 1 was replaced with the raw material for seed culturing.

(1) Preparation of raw material for seed potato culture 2 kg of wheat that has been cracked according to conventional methods, 5 kg of wheat bran, and about 5 liters of water are thoroughly mixed to prepare a raw material for seed potato culture with a water content of about 43% (w / w). It was adjusted.

(2) Operation of the vibratory feeder Next, the seed culturing raw material colored with the red powder dye is introduced up to a height of 3 cm from the lower end opening of the hopper A, and then the normal seed culturing raw material is introduced. Thus, a seed layer for seed culturing that was color-coded in the hopper was formed.
Next, the operation of the apparatus was started, and the seed culturing raw material was slowly moved toward the outlet by the slight vibration of the trough B, and the seed culturing raw material was quantitatively supplied.

(Confirmation of effect)
In Example 2, a change from a red colored raw material to an uncolored raw material was observed. As a result, about 12 seconds after the start of operation, a part of the uncolored raw material begins to come out of the hopper mixed with the red colored raw material from the vicinity of the lower end portion of the hopper front side wall 1, and after 6 seconds, the tip of the hopper rear corner 7 Uncolored raw materials started to appear from the vicinity, and the whole became uncolored raw materials, and there were no red colored raw materials at all.
That is, it was found that the time required for switching from the red colored raw material to the non-colored raw material was 6 seconds, and there was almost no retention of the raw material for seed culture.

(Comparative Example 2)
For comparison, a change from a red colored material to an uncolored material was observed in exactly the same manner except that the hopper of FIG. 6 (the conventional hopper) was used instead of the hopper A of FIG.
As a result, about 12 seconds after the start of operation, a part of the uncolored raw material begins to come out of the hopper mixed with the red colored raw material from the vicinity of the lower end portion of the hopper front side wall 1, and 60 seconds later from the vicinity of the lower end portion of the hopper rear portion 11 However, uncolored raw materials began to appear, and the whole became uncolored raw materials.
That is, it can be seen that the time required for switching from the red-colored raw material to the non-colored raw material is 60 seconds in the conventional hopper, which is 10 times larger than the 6 seconds of the present invention.

A ... Hopper body, B ... Trough, C ... Vibration generator, D ... Vibration feeder, 1 ... Front hopper side wall, 2 ... Central part, 3 ... Inside hopper Included part, 4 ... side wall, 5 ... side wall, 6 ... corner, 7 ... corner, 8 ... corner, 9 ... belt conveyor, 10 ... flat container , 11 ... rear part

Claims (5)

  A vibration feeder hopper that supplies the object to be conveyed to a vibration feeder that conveys the object to be conveyed in the conveying direction, the front side wall 1 intersecting the conveying direction, and the side walls 4 and 5 connected to the front side wall 1 The front side wall 1 is formed with a folded portion 3 that is folded and projected into the hopper, and the interval between the side walls 4 and 5 becomes narrower toward the direction opposite to the transport direction. A hopper for vibration feeders.   The hopper for a vibration feeder according to claim 1, wherein corners 6, 7, and 8 of the inner peripheral side wall of the hopper main body have an arc shape.   The vibration feeder gives the hopper main body A, the inclined trough B provided below the hopper main body A, and mechanical vibrations applied to the trough B, throws out the object to be conveyed forward, and supplies it. The hopper for a vibration feeder according to claim 1 or 2, comprising a vibration generating device C for performing the operation.   The hopper for a vibration feeder according to claim 3, wherein the object to be conveyed is a wet granular material containing 35 to 50% (w / w) of moisture.   The hopper for a vibration feeder according to claim 4, wherein the wet granular material is a soy sauce koji filling raw material or a seed koji culture raw material.

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