JP5461142B2 - Powder sieving equipment - Google Patents

Description

  The present invention relates to a powder sieving apparatus for discharging powder, and more particularly to a powder sieving apparatus for discharging hand flour in a bread manufacturing process.

  2. Description of the Related Art Conventionally, powder sieving devices for discharging powder have been used when producing foods. For example, Patent Document 1 discloses a dust sprinkling device for sprinkling dust on noodles. This powder sprinkling device is in a swinging state between a rotating shaft that is driven to rotate, a pair of rotating disks provided at both ends of the rotating shaft, and support grooves formed in the circumferential direction of the pair of rotating disks, respectively. A stirring mechanism having a plurality of cross-linked stirring shafts, and a hopper for accommodating the dust.

  The stirring mechanism is disposed in the vicinity of the opening plate that forms the bottom of the hopper. When the pair of rotating disks rotate, the agitation shaft is guided to roll on the upper surface of the aperture plate, compresses the dust deposited on the upper surface of the aperture plate, and applies the dust from the powder drop opening that penetrates the aperture plate. Discharge.

JP-A-4-190493

  The structure of the powder sieving apparatus including the conventional powder sprinkling apparatus is a structure in which the powder that is the dust on the powder dropping port is pressed and discharged by the stirring shaft when the stirring shaft passes over the powder dropping port. Therefore, when the stirring shaft is not at the powder dropping port, the powder is hardly discharged. As a result, there is a possibility of causing pulsation in which the discharge amount of the powder discharged by the rotation of the stirring shaft is not uniform.

  Further, since the cylindrical side surface of the stirring shaft presses a flat opening plate having a discharge region provided with a powder dropping port, the powder is discharged, so the region for discharging the powder is the stirring shaft. It becomes a single discharge area | region with the linear shape extended along the longitudinal direction. Therefore, in order to provide a plurality of discharge areas, it is necessary to provide another stirring mechanism, which complicates the configuration of the powder sieving apparatus.

  The present invention has been made in view of such circumstances, and quantitatively from the discharge region that does not solidify the powder stored in the powder storage box or pulsate the discharge of the powder. An object is to provide a powder sieving device that can be discharged. Furthermore, it aims at providing the powder sieving apparatus which can discharge uniformly from a some discharge area with a simple structure regarding the longitudinal direction of a powder storage box.

  In order to solve the above-described problems and achieve the object, the powder sieving apparatus of the present invention has a first discharge area and a second discharge area from which powder is discharged, and contains the powder. An accommodation box and a groove for supplying the powder to the first discharge region or the second discharge region are provided on the outer peripheral surface, and rotate without contact with the first discharge region and the second discharge region. A rotatable roller, and a discharge amount adjusting unit capable of adjusting the amount of powder discharged from the first discharge region and the amount of powder discharged from the second discharge region, and the discharge amount adjusting unit A first minimum gap dimension between the outer peripheral surface of the rotating roller and the first discharge area, and a second minimum gap dimension between the outer peripheral surface of the rotating roller and the second discharge area. Are defined.

  According to another aspect of the powder sieving apparatus of the present invention, the discharge amount adjusting means is an eccentric mechanism for adjusting a position of an axis of a rotation shaft of the rotating roller with respect to the powder storage box.

  Furthermore, according to one aspect of the powder sieving device of the present invention, the first discharge area and the second discharge area are mutually in relation to a virtual vertical plane passing through the axis of the rotation shaft of the rotating roller. It arrange | positions so that it may oppose.

  According to another aspect of the powder sieving device of the present invention, the outer peripheral surface of the rotating roller and the inner surface of the powder storage box are configured so that the maximum pressure is applied to the powder in the first discharge region or the second discharge region. The space defined by is gradually reduced downward in the vertical direction.

  Moreover, according to one aspect of the powder sieving apparatus of the present invention, the first minimum gap dimension and the second minimum gap dimension are different.

  Furthermore, according to one aspect of the powder sieving device of the present invention, the clearance angle of the groove of the rotating roller is 40 degrees to 50 degrees.

  Since the powder sieving apparatus according to the present invention is configured to discharge powder by the urging force to the powder in the direction of the discharge region by the groove of the rotating roller and the pressing force based on the weight of the powder, pulsation occurs. There is no. Furthermore, since the powder sieving apparatus of the present invention is configured to separate the rotating roller from the discharge area, a plurality of discharge areas can be easily provided.

It is a partially broken perspective view which shows the main elements of the powder sieving apparatus which concerns on embodiment. (A) is the II-II arrow directional view of FIG. 1, (b) is an enlarged view of the IIb part of Fig.2 (a). It is a bottom view of the board member with which the powder sieving device concerning an embodiment was equipped. It is a top view which shows the outline of the powder sieving apparatus which concerns on embodiment. (A), (b) is sectional drawing similar to Fig.2 (a) for demonstrating eccentricity of a rotating roller. It is a partially broken front view which shows the main elements of the powder sieving apparatus which concerns on embodiment for showing the positional relationship of a rotating roller and a short side wall part. (A) is a side view schematically showing a part of a bread production line, and (b) is a front view schematically showing a part of a bread production line.

  Hereinafter, embodiments and examples of a powder sieving apparatus according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment and an Example.

Embodiment
FIG. 1 is a partially broken perspective view showing main elements of a powder sieving apparatus 1 according to the embodiment, FIG. 2A is a view taken along the line II-II in FIG. 1, and FIG. Fig. 2 is an enlarged view of a portion IIb in Fig. 2 (a), Fig. 3 is a bottom view of a plate member 39 attached to the powder sieving device 1 according to the embodiment, and Fig. 4 is a powder according to the embodiment. 5A and 5B are schematic plan views of the sieving device 1. FIGS. 5A and 5B are cross-sectional views similar to FIG. 2A for explaining the eccentricity of the rotating roller 20, and FIG. It is a partially broken front view which shows the main elements of the powder sieving apparatus which concerns on embodiment for showing the positional relationship of the roller 20 and the short side wall part 2a1.

  As shown in FIGS. 2A and 2B, the powder sieving apparatus 1 mainly includes a first discharge region 35 and a second discharge region 37 from which powder (for example, strong powder) is discharged, A powder storage box 2 for storing powder and a groove 20a for supplying the powder to the first discharge area 35 or the second discharge area 37 are provided on the outer peripheral surface, and the first discharge area 35 and the second discharge area 35 are provided. A rotation roller 20 that can rotate in a non-contact manner with the discharge region 37, and a discharge amount adjusting means that adjusts the amount of powder discharged from the first discharge region 35 and the amount of powder discharged from the second discharge region 37. An eccentric mechanism. The urging force due to the weight of the powder and the urging force by the rotating roller 20 act on the powder that has reached the vicinity of the first ejection region 35 or the second ejection region 37 by the rotation of the rotating roller 20, and the first urging force is applied. It is discharged from the discharge area 35 or the second discharge area 37 to the outside of the powder storage box 2. Below, each component of the powder sieving apparatus 1 is demonstrated.

  As shown in FIG. 1, the powder storage box 2 includes a side wall 2 a that defines a rectangular opening in a plan view, and a bottom 2 b that is continuous with the side wall 2 a and has a tapered shape in a side view. The bottom 2b has a bottom opening 31 (see FIGS. 2A and 6) that defines an opening in which a part of the rotating roller 20 can be exposed to the outside from the powder storage box 2 (see FIG. 2A). Have A pair of short side wall portions 2a1 facing the longitudinal direction of the side wall portion 2a are provided with through holes 4 (see FIG. 4) for rotatably supporting the rotating shaft 3 of the rotating roller 20.

  Further, a plate member 39 provided with a first discharge area 35 and a second discharge area 37 as shown in FIG. 3 is removable on the outer surface of the bottom wall portion 2b of the powder storage box 2 shown in FIG. Are fixed by a fixing member such as a screw 34. The plate member 39 is parallel to the bottom wall 2b of the powder storage box 2 from the horizontally extending base 39a and both ends of the base 39a in a side view (see FIG. 2a) in a state of being attached to the bottom wall 2b. And a pair of inclined portions 39b extending. The plate member 39 can use a metal material such as aluminum.

  A first discharge area 35 and a second discharge area 37 are formed in the pair of inclined portions 39b, respectively. The first and second ejection regions 35 and 37 are provided with a plurality of openings 33 penetrating in the thickness direction of the inclined portion 39b. In the short direction of each of the discharge regions 35 and 37, a group composed of a plurality of openings 33 of the same size arranged in a straight line at a predetermined hole pitch (distance between the centers of adjacent holes) is arranged in the longitudinal direction. A plurality of lines are alternately arranged at a predetermined row pitch (the shortest distance between the center line of one group of adjacent openings and the center line of another group of openings). The powder stored in the powder storage box 2 is discharged to the outside through the opening 33. In the present embodiment, an opening 33 is not provided between the screws 34 spaced apart in the left-right direction in FIG. 3 because a rib (not shown) for supporting the plate member 39 extends. Without being limited to this configuration, the shape, size, number, arrangement pattern, and the like of the openings 33 can be changed as appropriate.

  The rotating roller 20 is rotated around the rotation center O by driving means such as a driving motor 171 (see FIG. 4) connected to the rotating shaft 3. The rotating roller 20 is formed of a metal material such as aluminum, a synthetic resin material such as polyacetal resin, or the like, depending on the intended use or the amount of powder to be discharged. Further, as shown in FIG. 2A, the shaft center O of the rotating shaft 3 has a first minimum gap dimension t1 between the outer peripheral surface of the rotating roller 20 and the first discharge region 35 such that the rotating roller 20 An imaginary surface Y that is equidistant from the inner surface 2c of the longitudinal side wall 2a2 (into a vertical imaginary surface passing through the axis O) so as to be longer than the second minimum gap dimension t2 between the outer peripheral surface and the second ejection region 35. Eccentricity (offset) is arranged with respect to (parallel plane). Here, the minimum gap is the shortest distance between the outer peripheral surface of the rotating roller 20, the inclined portion 39b provided with the first (or second) discharge region 35 (37), and the inner surface 39c.

  In the present embodiment and examples to be described later, the first and second are components located upstream of the rotation direction of the rotating roller 20 (the arrow direction in FIG. 2A) with respect to the virtual plane Y. The first component is referred to as the first component, and the component located downstream in the rotational direction is referred to as the second component. For example, the first and second discharge regions 35 and 37 are located on the upstream side in the rotation direction and the downstream side in the rotation direction of the rotary roller 20.

  An eccentric mechanism, which is an example of the discharge amount adjusting means for offsetting the axis O of the rotation shaft 3 with respect to the virtual plane Y, will be described. As shown in FIG. 4, the eccentric mechanism includes a handle 157, a connecting shaft 161 that transmits a rotational force from the handle 157, a pair of bevel assemblies 153 and 169, a pair of screw members 155 and 165, and the longitudinal axis of the rotating shaft 3. A pair of bearing members 153 and 169 that rotatably support both ends in the direction, a pair of support rails 151 and 167, and a pair of screw support portions 173 and 175 are provided. The pair of members have the same shape and the same dimensions.

  The connecting shaft 161 extends along the longitudinal side wall 2 a 2 of the powder storage box 2 and is rotatably fixed to the powder storage box 2. A handle 157 for rotating the connecting shaft 161 is attached to one end of the connecting shaft 161. Also, bevel assemblies 159 and 163 that change the angle of the rotation shaft by approximately 90 degrees are connected to the connecting shaft 161. The bevel assemblies 159 and 163 include first bevel gears 159a and 163a that rotate concentrically with the connecting shaft 161, and second bevel gears 159b and 163b that have an axis orthogonal to the axis of the connecting shaft 161. Composed.

  The second bevel gears 159b and 163b are fixed with screw members 155 and 165 each having a threaded portion formed on the outer periphery that rotates concentrically with the second bevel gear. Therefore, the shaft centers of the screw members 155 and 165 are orthogonal to the shaft center of the connecting shaft 161. Screw support portions 173 and 175 provided with screw holes 173a and 175a are screwed into the screw support portions 173 and 175, respectively. Furthermore, the screw support portions 173 and 175 are mounted on bearing members 153 and 169 that rotatably support both ends of the rotary shaft 3 extending along the longitudinal direction of the powder storage box 2. The bearing members 153 and 169 are mounted on the support rails 151 and 167 fixed to the short side wall 2a1 so as to be slidable in the direction crossing the powder storage box 2.

  In the eccentric mechanism configured as described above, when the handle 157 is rotated, the rotational force is transmitted to the connecting shaft 161, and the rotational force of the connecting shaft 161 is passed through the bevel assemblies 155 and 163 to be screw members 155 and 165. Is transmitted to. The rotational movements of the screw members 155 and 165 are converted into linear movements of the screw support portions 173 and 175 in the direction across the powder storage box 2, and the bearing members 153 and 169 move. As a result, the axis O moves in a direction orthogonal to the virtual plane Y.

  FIG. 5A shows a state in which the handle 157 is rotated and the axis O is decentered from the virtual plane Y by a predetermined distance δ1. In this case, a substantially equal amount of powder is discharged from the first discharge area 35 and the second discharge area 37 (see FIG. 2). Further, when the amount of powder from the second discharge region 37 (see FIG. 2) is reduced, the eccentricity mechanism can be set so that the axis O passes on the virtual plane Y. Further, when reducing the amount of powder from the first discharge area 35, the axis O is moved to the right side of the virtual plane Y so that the first discharge area 35 is close to the rotating roller 20.

  In addition, although the eccentric mechanism of this embodiment is the structure which decenters the axial center O of the rotating shaft 3 manually, an electric motor etc. can also be used. Further, although the eccentric mechanism is configured to decenter the axis O only in the X-axis direction, the direction orthogonal to the X-axis direction (that is, the direction along the virtual plane Y), the X-axis direction, and the X-axis It is good also as a structure eccentric to the direction orthogonal to a direction.

  As shown in FIG. 2B, the outer peripheral surface of the rotating roller 20 is connected to both ends of the arc-shaped surface 20b that defines the outer diameter of the rotating roller 20 and the arc-shaped surface 20b, and is provided at equal intervals in the circumferential direction. Groove 20a. The groove 20a is defined by two inclined surfaces 31 that are continuous with the arcuate surface 20b, and a bottom surface 32 that connects one ends of the two inclined surfaces 31. The angle (relief angle Z) formed between the tangent line at the connecting portion between the arcuate surface 20b and the inclined surface 31 and the inclined surface 31 is set to about 40 ° to about 50 °. Therefore, the groove 20a is expanded outward in the radial direction of the rotating roller 20. Note that the groove 20a of the rotating roller 20 extends to both end surfaces 20c in the longitudinal direction of the rotating roller 20, as shown in FIG. In addition, the longitudinal dimension of the bottom opening 31 of the powder storage box 2 and the longitudinal dimension of the rotating roller 20 (the length between both end surfaces 20c) are approximately the same.

  Furthermore, in the space defined by the outer peripheral surface of the rotating roller 20, the inner surface 2c of the powder storage box 2, the inner surface 39c of the inclined portion 39b, and the inner surface 39d of the base portion 39a, on the upstream side in the rotational direction of the rotating roller 20. Is the pressure applied to the powder at a point (first maximum pressure point P1) on the inner surface 39c where the outer peripheral surface of the rotating roller 20 and the inner surface 39c of the inclined portion 39b are at the minimum distance (first minimum gap dimension t1). The components are positioned so that is the maximum value. That is, the first maximum pressure point P <b> 1 is located in the first discharge region 35. Then, the powder extending in the first maximum pressure point P1 and the vicinity thereof is energized by the pressure, and the powder is discharged from the opening 33 of the first discharge region 35.

  Note that the inventors applied the maximum urging force to the powder at the first maximum pressure point P1 because of the pressure due to the weight of the powder stored in the powder storage box 2 and the rotation roller 20. The knowledge that it is because the urging | biasing force to the powder from the groove | channel 20a accompanying rotation arises has been acquired.

  Further, the powder that has passed through the first discharge area 35 is guided to the base 39 a and the second discharge area 37 by the rotating roller 20. In the space defined by the outer peripheral surface of the rotating roller 20, the inner surface 2c of the powder storage box 2, the inner surface 39c of the inclined portion 39b, and the inner surface 39d of the base portion 39a, on the downstream side in the rotational direction of the rotating roller 20. The outer peripheral surface of the rotary roller 20 and the inner surface 39c of the inclined portion 39b are added to the powder at a point (second maximum pressure point P2) on the inner surface 39c that is the minimum distance (second minimum gap dimension t2). The components are positioned so that the pressure is at a maximum value. That is, the second maximum pressure point P <b> 2 is located in the second discharge region 37. The powder extending around the second maximum pressure point P 2 and its periphery is urged by the pressure, and the powder is discharged from the opening 33 of the second discharge region 37.

  As with the first maximum pressure point P1, the inventors have stated that the reason why the maximum urging force is applied to the powder at the second maximum pressure point P2 is that the powder stored in the powder storage box 2 It has been found that the pressure due to its own weight and the urging force due to the groove 20a accompanying the rotation of the rotating roller 20 are generated. Since the rotating roller 20 has a cylindrical shape, the maximum pressure points P1 and P2 extend linearly in the axial direction of the rotating roller 20 on the inner surface 39c.

  As shown in FIG. 2A, a horizontal line passing through the axis O of the rotary shaft 3, a horizontal line (not shown) passing through the first and second maximum pressure points P1 and P2, and an outer peripheral surface of the rotary roller 20 And the area of the area | region in the side view formed by the inner surface 2c of the powder storage box 2 and the inner surface 39c of the inclination part 39b is comprised so that it may reduce gradually toward a perpendicular direction downward.

  In addition, at the first maximum pressure point P1, the vertical components of gravity and the urging force by the groove 20a coincide with each other downward in the vertical direction. However, at the second maximum pressure point P2, the vertical component of the urging force by the groove 20a is generated upward, while gravity acts downward in the vertical direction. Therefore, the biasing force in the direction of the opening 33 against the powder at the second maximum pressure point P2 is smaller than the biasing force in the direction of the opening 33 against the powder at the first maximum pressure point P1.

  Therefore, by making the second minimum gap dimension t2 smaller than the first minimum gap dimension t1, the biasing force generated at the second maximum pressure point P2 becomes substantially equal to the biasing force at the first maximum pressure point P1. Like that. By making the urging force against the powder at the first maximum pressure point P1 and the second maximum pressure point P2 the same, the amount of powder discharged from the opening 33 of the second discharge region 37 is changed to the first discharge point 37. The amount of powder discharged from the opening 33 in the region 35 can be made substantially the same.

  In addition, as long as the amount of powder that can be a horizontal surface at a height that substantially covers the outer peripheral surface of the rotating roller 20 (the vertical direction in FIG. 2A) is accommodated in the powder storage box 2. The knowledge that there is no change in the amount of powder discharged from the first and second discharge regions 35 and 37 is obtained.

  Furthermore, the inventors have determined that the short side wall 2a1 and the end surface 20c of the rotating roller 20 (the surface perpendicular to the axis O of the rotating shaft 3 of the rotating roller 20) have a predetermined positional relationship. It has been found that powder can be prevented from agglomerating or coagulating at both ends in the longitudinal direction. FIG. 6 shows that after the powder storage box 2 is almost filled with powder, the powder is discharged on the outer peripheral surface of the rotating roller 20 until the powder is exhausted. A state in which the powder remains only between the side wall 2a1 is indicated by a two-dot chain line.

  In this state, the powder is the intersection of the end surface 20c of the outer peripheral surface 20a of the rotating roller 20 and the outer peripheral surface 20a, and the uppermost portion 20d of the end surface 20c (the height direction of the powder storage box 2 (upper and lower in FIG. 6) The components are arranged so that the following relational expression (1) is established in the portion at the highest position of the end face 20c in the direction).

  l = h / tan θ (1)

  Here, θ is the angle of repose of the powder, l is the shortest distance from the end surface 20c of the rotating roller 20 to the inner surface 2c of the short side wall 2a1, h is the height of the powder, and t is short. The thickness dimension of the side wall part 2a1 is shown.

  When the rotating roller 20 is rotated, a pressing force from the rotating roller 20 is applied to the powder extending in a region between the both end surfaces 20c of the rotating roller 20 and the inner surface 2c of the short side wall 2a1. However, by configuring so that the above relational expression (1) is established, the amount of powder from the openings 33 located on both ends in the longitudinal direction of the discharge region 35 (37) of the powder storage box 2 is determined by the powder storage box 2. It is possible to equal the amount of powder from the opening 33 located on the central side in the longitudinal direction of the discharge area 35 (37) (part away from the inner surface 2c). Furthermore, the powder on the side of the short side wall 2a1 in the powder storage box 2 is pressed, and the powder can be prevented from agglomerating or solidifying.

  In the present embodiment, the dimension from the uppermost portion 20d of the rotating roller 20 to the upper edge of the powder storage box 2 and the height h of the powder coincide. However, the present invention is not limited to the configuration of the present embodiment, and it goes without saying that the dimension from the uppermost portion 20d of the rotating roller 20 to the upper edge portion of the powder storage box 2 can be appropriately changed as long as the above formula (1) is satisfied. Yes.

  Below, the Example which applied the powder sieving apparatus 1 which concerns on embodiment to the manufacturing process of bread is described, referring FIG. FIG. 7A is a side view schematically showing a part of the bread production line, and FIG. 7B is a front view schematically showing a part of the bread production line. In the bread manufacturing process from dividing the bread dough into predetermined dimensions to forming it into a predetermined shape, it is necessary to prevent the bread dough from adhering to an apparatus for processing the bread dough and to shake hand flour on the bread dough. The production line of the present embodiment uses the powder sieving device 1 to shake hand flour. This production line is configured to extend flat spherical dough 101 and form it into flat dough 103.

  A first belt conveyor (endless belt) 109 serving as a conveying means extends in the front and back direction of the paper surface of FIG. Both ends of the first belt conveyor 109 are supported by a drive roller 108 and a driven roller (not shown), respectively, and a pair of flat spherical dough 101 is rotated in the direction of arrow 123 in FIG. It is conveyed between the forming rollers 105 and 107 (in the direction of arrow 121 in FIG. 7B). The flat bread dough 103 formed by the pair of forming rollers 105 and 107 is guided by the guide members 115 and 117 so that the flat surface on the desired side is in contact with the second belt conveyor 111, and the second belt conveyor Falls on 111. Both ends of the second belt conveyor (endless belt) 111 are supported by a driving roller 113 and a driven roller (not shown), and convey the flat bread dough 103 to the next step (in the direction of arrow 125). In addition, since the tip portions of the guide members 115 and 117 are in contact with the outer peripheral surfaces of the forming rollers 105 and 107, even if the flat bread dough 103 is attached to either of the forming rollers 105 and 107, the forming is performed. The bread dough 103 is peeled off from the rollers 105 and 107 and reliably falls onto the bell conveyor 113.

  The powder sieving apparatus 1 disposed above the forming rollers 105 and 107 is used to spray hand flour on the surfaces of the forming rollers 105 and 107 for flattening the bread dough 101. As the rotating roller (see reference numeral 20 in FIGS. 1 and 2) rotates, the hand powder discharged from the first discharge region 35 is discharged to the forming roller 105 and from the second discharge region 37. The hand powder (indicated by broken lines in FIG. 7) is sprayed on the forming roller 107, respectively. In this embodiment, in FIG. 7A, more hand flour is applied to the right forming roller 105 than the left forming roller 107, and the lower surface of the formed flat bread dough 103, that is, the second bell conveyor 113. It is the structure which provides many hand powders to the surface which is contacting.

  As described in relation to the embodiment, the amount of powder discharged from the first and second discharge regions 35 and 37 is appropriately changed in the offset amount from the virtual plane Y of the axis O of the rotating shaft 3. Adjust by. In addition, as described in relation to the embodiment, when the amount of powder discharged from the first and second discharge regions 35 and 37 is the same, from the virtual plane Y of the axis O of the rotation shaft 3. Is appropriately set.

  By applying the powder sieving apparatus 1 to the bread production line as in the above embodiment, a predetermined amount of powder can be quantitatively discharged to both the forming rollers 105 and 107. It is possible to exhibit a given extensibility of bread dough without adhering. A predetermined amount of powder can be applied to both sides of the flat bread dough 103 via the forming rollers 105 and 107. Accordingly, it is possible to prevent the dough from adhering to each other during the conveyance of the dough or the dough from adhering to a conveying means such as a belt conveyor.

  In this embodiment, a single bread dough 101 is processed, but a plurality of bread dough 101 may be supplied along the longitudinal direction of the rotating roller 20. In this case, since the powder can be discharged uniformly in the longitudinal direction of the rotary roller 20, it is possible to increase the manufacturing efficiency of the bread.

  In the embodiments and examples, the powder sieving apparatus for spraying strong powder used in the bread making process is used. However, the powder sieving apparatus according to the present invention discharges powders used for various foods such as buckwheat flour and tortillas. It can be applied to means for

Moreover, although the powder sieving apparatus which concerns on this embodiment and an Example was set as the structure which provides the 1st and 2nd discharge area | region, the powder sieving apparatus of this invention is a structure provided with a single or 3 or more discharge area | regions. It is also good. Furthermore, although the powder container 2 and the plate member 39 are separated, they may be integrated.
In the present embodiment and example, an eccentric mechanism that changes the position of the axis of the rotating shaft is used as the discharge amount adjusting means. However, the position of the axis of the rotating shaft is fixed, and the first discharge region 35 and You may use the mechanism which can adjust the 2nd discharge area | region 37 with respect to the outer peripheral surface of a rotating roller.

DESCRIPTION OF SYMBOLS 1 Powder sieving apparatus 2 Powder storage box 2a Side wall part 2a1 Short side wall part 2a2 Long side wall part 2b Bottom wall part 2c Inner surface 3 Rotating shaft 20 Rotating roller 20a Groove 31 Bottom part opening part 33 Opening 34 Screw 35 1st discharge area 37 1st 2 discharge area 39 plate member 39a base 39b inclined portion 39c inner surface 101 flat spherical dough 103 flat bread dough 105, 107 forming roller 109 first belt conveyor 111 second belt conveyor 108, 113 driving rollers 151, 167 supported Rails 153, 169 Bearing members 155, 165 Screw members 159, 163 Bevel assembly 161 Connection shaft 171 Drive motor 173, 175 Screw support

Claims (8)

A powder container box having a first discharge area and a second discharge area for discharging powder, and storing the powder;
A rotary roller provided with a groove on the outer peripheral surface for supplying the powder to the first discharge area or the second discharge area and capable of rotating without contact with the first discharge area and the second discharge area When,
A discharge amount adjusting means capable of adjusting the amount of powder discharged from the first discharge region and the amount of powder discharged from the second discharge region;
By the discharge amount adjusting means, a first minimum gap dimension between the outer peripheral surface of the rotating roller and the first discharge region, and a first dimension between the outer peripheral surface of the rotating roller and the second discharge region. 2 minimum gap dimensions are defined,
The powder sieving apparatus, wherein the discharge amount adjusting means is an eccentric mechanism that can eccentrically rotate the rotating roller so that the first minimum gap dimension and the second minimum gap dimension are different.   2. The powder sieving apparatus according to claim 1, wherein the eccentric mechanism decenters the rotating roller in a direction orthogonal to a virtual vertical plane extending at an equal distance from both wall surfaces of the powder storage box. .   The powder sieving apparatus according to claim 1 or 2, wherein the eccentric mechanism adjusts a position of an axis of a rotation shaft of the rotating roller with respect to the powder storage box.   The first discharge area and the second discharge area are arranged so as to face each other with respect to a virtual vertical plane extending equidistantly from both wall surfaces of the powder storage box. The powder sieving apparatus according to any one of 1 to 3.   The space defined by the outer peripheral surface of the rotating roller and the inner surface of the powder storage box gradually decreases downward in the vertical direction so that the maximum pressure is applied to the powder in the first discharge region or the second discharge region. The powder sieving device according to any one of claims 1 to 4.   The powder sieving apparatus according to any one of claims 1 to 5, wherein the first minimum gap dimension is different from the second minimum gap dimension.   The powder sieving apparatus according to any one of claims 1 to 6, wherein a clearance angle of the groove of the rotating roller is 40 to 50 degrees.   The first minimum gap dimension located on the upstream side in the rotation direction of the rotating roller is longer than the second minimum gap dimension located on the downstream side. The powder sieving device as described.

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