JP5774553B2 - Discharge flow rate adjustment device in powder and particle feeder - Google Patents

Description

  The present invention relates to a discharge flow rate adjusting device for realizing high-precision quantitative supply with less pulsation by adjusting the flow rate of powder discharged from a discharge port in a powder supply unit.

  Conventionally, an outer cylinder is erected on the bottom plate, the inner cylinder is supported above the bottom plate through a powder particle discharge gap, a through hole is provided in the center of the bottom plate, and an upright rotating shaft that penetrates the through hole is provided. A boss is fitted, a cap is provided on the top of the boss, a central rotary blade is provided on the bottom plate through the boss, and an outer peripheral rotary blade is provided from the cylindrical outer edge of the central rotary blade toward the inner circumferential direction. A rotating body is formed, an annular passage between the inner and outer cylinders is formed by bringing the cylindrical outer edge of the rotating body close to the inner periphery of the outer cylinder, and is diffused into the annular passage from the granular material discharge gap. A powder supply device has been proposed that quantitatively discharges a granular material from a granular material discharge port formed in the annular passage by the rotation of the central rotary blade and the outer peripheral rotary blade (Patent Document 1). , 2).

  In the granular material supply apparatus having such a configuration, the amount of the granular material carried by the central rotary blade is different from the amount of the granular material carried by the outer peripheral rotary blade, so that the blade is discharged from the granular material discharge port by each blade. However, in order to improve the accuracy of quantitative supply, it is necessary to suppress such pulsation as much as possible.

  Therefore, in the apparatus of Patent Document 1, the granular material discharge port has a substantially triangular shape in which the upstream side in the granular material conveyance direction is narrow and the downstream side is wide, and the central rotary blade passes through the granular material discharge port. In doing so, the granular material was gradually discharged from the outlet according to the shape of the outlet, thereby suppressing pulsation.

  In the apparatus of Patent Document 2, a plurality of guide rods are fixed in the powder particle discharge port from the upstream side to the downstream side in the conveyance direction of the powder particle via a gap, and the powder drops from the discharge port. The pulsation of the granular material was suppressed by dispersing the granular material with the guide rod.

Utility model registration No. 2568183 JP 2009-263090 A

  By the way, in the above-mentioned conventional granular material supply device, large pulsation of the granular material can be suppressed to a considerable extent, but in order to answer the quantitative supply accuracy with a very short sampling time required in recent years, further pulsation of Sufficient suppression is required.

  In addition, since the state of pulsation varies depending on the type and properties of the supplied granular material, it is required to effectively suppress the pulsation corresponding to various types of granular material.

  The present invention has been made in view of the above-described conventional problems, and in a granular material supply machine, the granular material that can smooth the pulsation of the granular material to be supplied and realize high-precision quantitative supply. An object of the present invention is to provide a discharge flow rate adjusting device in a feeder.

  In addition, the present invention can sufficiently suppress the pulsation of the granular material supplied from the granular material discharge port, and the discharge flow rate in the granular material supply machine that can increase the quantitative supply accuracy even with a short sampling time. An object is to provide an adjusting device.

In order to achieve the above object, the present invention
First, an outer cylinder is erected on the bottom plate to form a powder supply case, and the inner cylinder is concentrically supported above the bottom plate via a powder discharge gap, and an upright rotating shaft is provided at the center of the bottom plate. A plurality of central rotary vanes positioned on the bottom plate are provided on the upright rotating shaft to form a rotating body, and a cylindrical outer edge of the rotating body is arranged in an annular shape between the inner and outer cylinders close to the inner periphery of the outer cylinder. A passage is formed, a plurality of outer peripheral rotating blades in the annular passage direction are provided on the cylindrical outer edge, and the granular material diffused into the annular passage from the granular material discharge gap at a predetermined angle of repose is disposed on the central rotating blade and In the discharge flow rate adjusting device in the powder supply unit for transferring the powder particles from the powder discharge port provided in the ring passage by transferring along the circular passage by the rotation of the outer peripheral rotary blade, A machine frame is provided under the granule outlet, and the machine frame is connected to the start edge of the powder outlet. A plurality of flow rate adjustment rods heading toward the end edge are pivotally supported at a predetermined interval in the width direction of the annular passage, and the adjacent flow rate adjustment rods can be driven to rotate in opposite directions by the driving means. Each of the flow rate adjusting rods has a fixed range from the start edge to the end edge of the granular material outlet and is composed of square bars, and the other range is composed of round bars, and between the square bars. The distance between the rods is constituted by a discharge flow rate adjusting device in the granular material supply machine that is configured to be narrower than the distance between the rods between the round bars.

  The machine frame can be constituted by, for example, an upstream machine frame (12), a downstream machine frame (12 '), and an upright machine frame (29, 29'). The granular material is transported in the direction of the granular material discharge port while forming a mountain-shaped heap on the central rotating blade and the outer peripheral rotating blade, and is discharged from the granular material discharging port. At this time, after the powder particles transferred by the central rotary blade and the outer peripheral rotary blade are once received by the square rod having a small distance between the rods of the upper flow rate adjusting rod, the powder particles are gradually lowered by the rotation of the flow rate adjusting rod. Therefore, it is possible to smooth the pulsation of the powder and to supply the powder with high accuracy. In addition, even if the flow rate of the granular material supplied to the granular material discharge port is increased for some reason, the increased granular material can flow out downward between the round bars having a large distance between the rods. No blockage of the powder or granule occurs.

  Second, a plurality of lower flow rate adjustment rods having the same configuration as the flow rate adjustment rods are pivotally supported in parallel with the flow rate adjustment rods at lower positions of the flow rate adjustment rods in the machine frame. The flow rate adjusting rod is pivotally supported with a half-pitch offset from each of the upper flow rate adjusting rods so as to be positioned between the adjacent upper flow rate adjusting rods. It is comprised by the discharge | emission flow volume adjustment apparatus in the said granular material supply machine of the said 1st thing comprised so that an adjacent flow volume adjustment rod could be rotationally driven in the mutually opposite direction.

  If comprised in this way, the granular material which flowed down between the upper flow regulating rods can be once received by the square bar of the lower flow regulating rod, and then flowed downward by the rotation of the lower flow regulating rod. So, even if it is a relatively large amount of granular material, once it is retained on each flow rate adjusting rod, the granular material can flow out smoothly and gradually downward, and the discharged granular material The pulsation can be effectively smoothed.

  Thirdly, in the powder and particle feeder according to the first or second aspect, each of the flow rate adjusting rods adjacent to the left and right is supported in a state in which the square bars change the angle by 45 degrees. Consists of a discharge flow control device.

  If comprised in this way, while receiving a granular material with the square bar in which a plane is located in the upper part and allowing the granular material to flow out downward with the square bar in which the corner part is located in the upper part, the granular material is blocked. Without causing a state, it is possible to smoothly flow the powder particles downward.

  Fourth, the flow rate adjusting rod has the square bar formed in a range of 3/5 from the starting end edge of the granular material discharge port, and the remaining 2/5 of the range is the round bar. It is comprised by the discharge flow volume adjustment apparatus in the granular material supply machine in any one of -3.

  If the discharge flow rate is normal, the pulsation should be leveled while flowing down the powder without any trouble because it falls into the area where there is a square bar near the starting edge of the powder discharge port. Can do. For example, if the flow rate of the granular material increases rapidly, for example, the increased granular material falls to the area where there is a round bar far from the starting edge of the granular material discharge port. By letting it flow down from between the round bars having a large distance between the rods, it is possible to prevent clogging of the powder particles.

  Fifth, the driving means is constituted by an electric motor and an inverter capable of variably controlling the rotational speed of the electric motor, and the rotational speeds of the flow rate adjusting rods are adjustable by the inverter. It is comprised by the discharge flow volume adjustment apparatus in the granular material supply machine in any one of.

  If comprised in this way, a flow volume adjustment rod can be rotationally driven by the optimal rotation speed according to the particle size, property, shape, etc. of a granular material.

  Sixth, a pair of blades are provided with an angular difference of 180 degrees on the outer periphery of the round bar of each of the upper flow rate adjusting rods, and the angle of the adjacent flow rate adjusting rod blades changes by 90 degrees. It is comprised by the discharge | emission flow volume adjustment apparatus in the granular material supply machine as described in the said 2nd.

  When configured in this way, even a piece of granular material such as paper, film, etc., can be forced to flow downward by the rotation of the blade, resulting in blockage of the granular material. Absent.

  Seventh, the upper and lower flow rate adjusting rods are connected to each other by a gear at each end, and the upper and lower flow rates are driven by driving any one of the flow rate adjusting rods by the driving means. It is comprised by the discharge flow volume adjusting device in the said granular material supply machine of the said 2nd or 6 which is comprised so that an adjustment rod can be rotationally driven.

  The gear can be constituted by a spur gear (21, 22, 23, 24, etc.), for example. If comprised in this way, each flow volume adjustment rod can be rotationally driven efficiently.

  Eighth, in the granular material feeder according to any one of the first to seventh aspects, the width of the granular material discharge port is formed so as to gradually increase from the starting edge side to the terminal edge side. Consists of a discharge flow control device.

  Such a granular material discharge port can be constituted by, for example, a substantially triangular granular material discharge port (8) (see FIG. 3C).

  Since the present invention is configured as described above, the powder particles transferred by the central rotary blade or the like are once received by the rectangular rod having a small distance between the rods of the upper flow rate adjusting rod, and then the flow rate adjusting rod is rotated. Therefore, it is possible to gradually drop and supply the powder downward, so that it is possible to smooth the pulsation of the powder and to supply the powder with high accuracy. Thereby, it is possible to realize a highly accurate quantitative supply with a short sampling time.

  In addition, even if the flow rate of the granular material supplied to the granular material discharge port is increased for some reason, the increased granular material can flow out downward between the round bars having a large distance between the rods. Therefore, the blockage of the granular material can be effectively prevented.

  In addition, since the powder particles are received by the rotating upper and lower flow rate adjusting rods, and the rotation of each rod allows the particles to be gradually dispersed downward and flowed out, the particles are relatively large in quantity. However, once the particles are retained on the flow rate adjusting rods, the particles can be smoothly and gradually discharged downward, and the pulsation of the discharged particles can be effectively smoothed.

  Further, by changing the rotational speed of the flow rate adjusting rod, it is possible to suppress pulsation in an optimum state according to the particle size, properties, shape, etc. of the granular material, thereby realizing high-precision quantitative supply.

  In addition, the blade of the round bar can be forced to flow downward even by the blade rotation even if it is a piece of granular material such as paper, film, etc., effectively preventing clogging of raw materials Can do.

It is side surface sectional drawing of the discharge flow volume adjusting device in the granular material supply machine which concerns on this invention. It is a partial cross section top view of the granular material supply machine using an adjustment apparatus same as the above. (A) is a plan view of a granular material supply machine using the same adjustment device as above, (b) is a plan view in the vicinity of a granular material discharge port of the same supply machine, (c) is a granular material discharge port of the same supply machine. It is a top view of the vicinity. (A) is a top view of the discharge flow regulator in the same apparatus, (b) is a side sectional view of the same discharge flow regulator. It is a side view of the discharge flow rate adjuster in the adjustment apparatus same as the above. It is the XX sectional view taken on the line of Fig.4 (a). It is a perspective view of the flow volume adjustment rod of the discharge flow volume adjuster in an adjustment apparatus same as the above. It is a disassembled perspective view of the flow volume adjustment rod of the discharge flow volume adjuster in an adjustment apparatus same as the above. The top view which expanded and showed the rotation state of the center rotary blade and the outer periphery rotary blade in the adjustment apparatus same as the above, (b) is a side view of (a), and is transferred by the center rotary blade and the outer periphery rotary blade. The state of the pulsation of the granular material and the state of the granular material in which the pulsation is suppressed after passing through the discharge flow controller are shown. It is a top view of the discharge flow volume adjusting machine vicinity of a granular material discharge port, (a) shows a substantially rectangular granular material discharge port, (b) shows a substantially triangular-shaped granular material discharge port.

  Hereinafter, the discharge flow rate adjusting device in the granular material supply machine according to the present invention will be described in detail.

  First, the granular material supply machine to which the discharge flow rate adjuster 11 of the present invention is applied will be described.

  The outer cylinder 2 is erected on the bottom plate 3 to form a powder supply case, the inner cylinder 1 is supported concentrically above the bottom plate 3 via a powder discharge gap t1, and is rotated upright on the center of the bottom plate 3 A shaft 10 is provided, and four central rotary blades (spokes) 5 located on the bottom plate 3 are provided on the rotary shaft 10 to form a rotating body, and a rotary ring provided at the tip of each central rotary blade 5 ( An annular passage 4 between the inner and outer cylinders is formed by bringing a cylindrical outer edge) 35 close to the inner periphery of the outer cylinder 2, and 12 outer peripheral rotating blades (material transfer scraper) 6 in the annular passage direction are formed in the rotating ring 35. Is provided in the annular passage 4, and a powder discharge port 8 is opened in the bottom plate 3 of the annular passage 4, and the powder diffused into the annular passage 4 from the powder discharge gap t1 at a predetermined repose angle α. The granular material is produced by rotating the central rotary blade 5 and the outer peripheral rotary blade 6 in the direction of arrow A. Constituting the granular material feeder to transfer to the outlet 8 (see FIG. 1, FIG. 2).

  The “upstream side” and the “downstream side” are determined with reference to the direction of arrow A, which is the direction in which the granular material is transferred. In FIG. 1, 33 is an electric motor, and 34 is a speed reducer. The motor 33 rotates the central rotary blade 5 and the outer peripheral rotary blade 6 in the direction of arrow A. Reference numeral 32 denotes a flow rate adjusting ring.

  The granular material discharge port 8 of such a granular material supply machine has a starting edge 8 ′ and a terminal edge 8 ″ parallel to each other as shown in FIGS. The inner cylinder 1 and 2 passing through the center are parallel to the diameter line D of the cylinder 1 and the width of the discharge port 8 is substantially the same as the width t2 of the annular passage 4, but as shown in FIGS. An inner cylinder side arc-shaped flange 8a is formed on one side, which is slightly smaller than the width t2.The outer cylinder side is also formed by an outer cylinder-side arc-shaped flange 8b along the outer cylinder 2, and has a substantially rectangular shape as a whole. An opening is used (see FIG. 3A).

  The shape of the particulate discharge port 8 is such that the start edge 8 ′ and the end edge 8 ″ have a substantially rectangular shape with substantially the same length, but as shown in FIG. 3 (c), the start edge 8 ′. It is good also as the substantially triangular-shaped opening part 8 which provided the inclined edge 8c toward the downstream from the upstream to the side.

  The granular material outlet 8 of FIG. 3C is parallel to the diameter line D of the inner and outer cylinders 1 and 2 passing through the center of the outlet 8 with the start edge 8 ′ and the end edge 8 ″ being parallel opposite edges. The inclined edge 8c is provided from the upstream side to the downstream side from the inner cylinder side end portion of the starting end edge 8 ′ toward the intermediate position 8a ′ of the inner cylinder side arcuate flange 8a, and the overall shape is substantially triangular. That is, the granular material outlet 8 is configured so that the area of the outlet 8 gradually increases from small to large from the upstream side to the downstream side in the conveying direction of the granular material. It comprises, and it is comprised so that a granular material may flow out little by little from the granular material discharge port 8 of an upstream with a small area, and the pulsation of the flowing granular material can be suppressed.

  In any shape of the granular material discharge port 8, a rectangular cylindrical guide tube 9 is formed downward from the bottom plate 3 on the lower periphery of the discharge port 8. A discharge flow rate adjuster 11 is connected to the lower end of the (see FIG. 1).

  As shown in FIGS. 4 and 5, the discharge flow rate adjuster 11 includes an upstream plate-like machine frame 12 and a downstream plate provided in parallel and opposite to the upstream side and the downstream side of the granular material. The flow rate adjusting rods 13 and 15 at the upper stage and the five at the lower stage are rotatably supported by the two end portions 13a, 13a ′, 15a and 15a ′ between the two machine casings 12 ′. As shown in FIG. 9 (b), the particulates transported by the central rotary blade 5 and the outer peripheral rotary blade 6 and flowing out from the discharge port 8 once fall and stay on the flow rate adjusting rods 13 and 15. The pulsation of the granular material is effectively eliminated by gradually dispersing and flowing to the lower side of the flow rate adjusting rods 13 and 15 by the rotation of the flow rate adjusting rods 13 and 15. is there.

  The granular material flow rate adjuster 11 is configured as shown in FIGS. 4 and 5. In the following description, the left and right directions of the discharge port 8 from the downstream side to the upstream side will be described as the left-right direction with reference to the conveyance direction (arrow A direction) of the granular material.

  As shown in FIGS. 4 (a) and 4 (b), six flow rate adjusting rods 13A to 13F heading from the upstream side to the downstream side are arranged in the left-right direction (annular) at the upper position between the two machine casings 12 and 12 'facing each other. They are provided in parallel at a constant interval (predetermined interval) in the width direction of the passage 4 and at the same height. These flow rate adjusting rods 13 are rotatably supported on the machine casings 12 and 12 'by both end portions 13a and 13a'. Both end portions 13a and 13a ′ of these flow rate adjusting rods 13 protrude to the outside of the both machine casings 12 and 12 ′, and can be rotated by bearings 14 provided on the both machine casings 12 and 12 ′. Is pivotally supported. In addition, about the said flow volume adjustment rod 13, the code | symbols 13A-13F are used when showing individually, and the code | symbol 13 is used when showing the rod which does not specify the whole rod or a position (it is the same also about the flow rate adjustment rod 15 of the lower stage). .

  Further, from the upstream side, the lower flow rate adjusting rods 13A to 13F between the two machine casings 12 and 12 'are positioned in the middle of the upper flow rate adjusting rods 13 and 13 adjacent to each other in the left-right direction. Five flow rate adjustment rods 15A to 15E heading downstream are provided in parallel to the upper rod 13 in a state where they are arranged in parallel at a constant interval in the left-right direction and at the same height (FIG. 7). reference).

  Each of the lower flow rate adjusting rods 15A to 15E is shifted in the left-right direction in a state shifted by a half pitch from the upper flow rate adjusting rod 13 so that each rod is positioned between the upper rods 13A to 13F. Are provided at regular intervals. That is, as shown in FIG. 6, for example, the lower flow rate adjusting rod 15A is an intermediate position between the upper flow rate adjusting rods 13A and 13B, the lower rod 15B is an intermediate position between the upper rods 13B and 13C, and the lower rod 15C is It is provided so as to be at an intermediate position between the upper rods 13C and 13D (the same applies to the other rods 15).

  The lower flow rate adjusting rods 15 are pivotally supported by the machine casings 12 and 12 ′ with their respective ends 15 a and 15 a ′. Both end portions 15a and 15a ′ of these flow rate adjusting rods 15 protrude outside the machine casings 12 and 12 ′, and can be rotated by bearings 16 provided on the machine casings 12 and 12 ′. It is pivotally supported.

  Of the upper flow rate adjusting rod 13, the end of the leftmost flow rate adjusting rod 13 </ b> A is extended upstream, and a driving pulley 20 is connected to the end of the flow rate adjusting rod 13 </ b> A. The

  Spur gears 21 for lateral connection are respectively connected to the end portions 13a of the upper end flow rate adjusting rods 13A to 13F. The flow rate adjusting rods 13A to 13F are meshed with each other by the spur gear 21. (See FIG. 5). Therefore, by driving the flow rate adjusting rod 13A connected to the drive pulley 20 in the direction of arrow a, the flow rate adjusting rods 13A to 13F can be driven to rotate in opposite directions as shown in FIGS. It is configured as follows.

  Of the upper flow rate adjusting rods 13A to 13F, the end portion 13a of the third flow rate adjusting rod 13C from the left end is extended upstream, and a spur gear 22 for vertical connection is fixed to the extended end portion. Yes.

  Spur gears 23 for lateral connection are respectively connected to the end portions 15a of the lower flow rate adjusting rods 15A to 15E. The flow rate adjusting rods 15A to 15E are meshed with each other by the spur gear 23. ing.

  Further, as shown in FIG. 4 (b), the end of the third flow rate adjusting rod 15C from the left end of the lower flow rate adjusting rod 15 is extended to the upstream side and is connected to the extended end portion in the vertical direction. A spur gear 24 is connected, and the spur gear 24 meshes with the spur gear 22 for upper and lower connection.

  Accordingly, the spur gear 24 for vertical connection rotates in the direction of the arrow b in FIG. 6 (the direction opposite to the arrow a) by the rotation of the spur gear 22 in the direction of the arrow a. 15E is configured to be rotationally driven in the direction of the arrow shown in FIG. 5 by the spur gear 23 for lateral connection, that is, in the opposite directions (see FIGS. 5 and 6).

  A motor support machine frame 36 is fixed to the outside of the machine frame 12, and an electric motor (drive means, for example, a geared motor) 17 for driving a rod is fixed to the machine frame 36. A driving pulley 19 is connected to the output shaft of the electric motor 17 via a speed reducer 18. A driving timing belt 37 is provided between the driving pulley 20 and the driving pulley 19 of the upper flow rate adjusting rod 13 </ b> A. Is stretched. Therefore, by driving the electric motor 17 and driving the upper flow rate adjusting rod 13A, all the upper and lower flow rate adjusting rods 13 and 15 can be simultaneously rotated in the direction of the arrow shown in FIG. Yes.

  Moreover, it can comprise so that the rotation speed of the said flow volume adjustment rods 13 and 15 can be adjusted according to the property of the granular material to supply by controlling the rotation speed of the said electric motor 17 with an inverter.

  As shown in FIG. 7, the upper flow rate adjusting rod 13 is composed of a round bar 25 as a whole, but within the full length of the round bar 25, a range of about 3/5 from the upstream side to the downstream side (above On the outer periphery of the round bar 25, a rectangular parallelepiped square bar 26 having a square cross section is coated on the outer periphery of the round bar 25. ing.

  Further, in the range of about 2/5 (other range) of the round bar 25 on the downstream side where the square bar 26 is not covered, the angular positions of the round bar 25 on the outer circumference direction are 180 ° C. with respect to each other. In addition, a pair of blades 28, 28 extending in the radial direction of the round bar 25 are provided in the axial direction of the round bar 25.

  The blades 28 are continuously provided from the downstream end position of the square bar 26 to the position in the round bar 25 near the inside of the machine casing 12 ′.

The flow rate adjusting rod 13 is fixed so that the plate surfaces of the blades 28 and 28 are parallel to the plane (side surface) of the square bar 26 (flow rate adjusting rods 13B, 13D, and 13F) and the blade 28. , 28 are fixed (rods 13A, 13C, 13E) so as to be positioned along diagonal lines in the cross section of the square bar 26.
The flow rate adjusting rods 13 </ b> A to 13 </ b> F are arranged such that the two types of rods 13 are alternately arranged on the left and right sides, and the angle of the square bar 26 is alternately shifted by 45 degrees for each of the left and right rods 13.

  Therefore, as shown in FIG. 7, the square bar 26 has flow rate adjusting rods 13B, 13D, and 13F in which the plane of the square bar 26 is located on the upper surface side, and a corner portion of the square bar 26 on the upper surface side. The flow rate adjusting rods 13A, 13C, and 13E are alternately positioned, and the blades 28 and 28 are also shifted by 90 degrees from each other on the left and right sides. The flow rate adjusting rods 13B, 13D, and 13F that are positioned, and the flow rate adjusting rods 13A, 13C, and 13E in which the blades 28 are positioned vertically are arranged alternately. The blades 28 of the adjacent flow rate adjusting rods 13 are pivotally supported so that their angles change by 90 degrees.

  These upper flow rate adjusting rods 13 are rotationally driven in the direction of the arrow shown in FIG. 6 while maintaining the above positional relationship.

  As shown in FIG. 8, the lower flow rate adjusting rod 15 is composed of a round bar 25 as in the upper flow rate adjusting rod 13, and the entire length of the round bar 25 extends from the upstream side to the downstream side. In the range of about 3/5 heading (a certain range from the start edge 8 ′ to the end edge 8 ″ of the granular material discharge port 8), a rectangular parallelepiped shape having a square cross section on the outer periphery of the round bar 25, The upper rod 13 has a structure in which a rectangular bar 26 having the same shape as the rectangular bar 26 is covered.

  However, the blades 28 and 28 of the upper rod 13 are present in the portion of the round bar 25 in the range of about 2/5 (other ranges) where the square rod 16 on the downstream side of the lower rod 15 does not exist. The part is composed only of the round bar 25. In this embodiment, the lower round bar 25 is not provided with the blades 28, 28, but the lower round bar 25 may be provided with the same blades 28, 28 as the upper stage.

  As shown in FIG. 8, the lower flow rate adjusting rod 15 is disposed by shifting the angle of the square bar 26 by 45 degrees for each of the left and right rods 15. Therefore, as shown in FIG. 8, the square bar 26 has a rod (flow rate adjusting rods 15B and 15D) on which the plane of the square bar 26 is located on the upper surface side, and a corner portion of the square bar 26 on the upper surface side. Rods (flow rate adjusting rods 15A, 15C, 15E) are arranged alternately.

  These lower flow rate adjusting rods 15 are rotationally driven in the direction of the arrow shown in FIG. 6 while maintaining the above positional relationship.

  Since the granular material falling from the granular material discharge port 8 usually falls in the range of 3/5 in the downstream direction from the starting edge 8 'of the discharge port 8, the horizontal direction between the square bars 26, 26 ( The distance t3 (distance between the rods) (refer to FIG. 6) in the left-right direction is set to be relatively narrow, for example, about 15 mm, and is configured so that the powder particles can once stay on the square bar 26. The distance t3 is common to both the upper rod 13 and the lower rod 15.

  Moreover, when the granular material which falls from the said discharge port 8 increases rapidly, the said granular material is not only the range of the said square bar 26 (the range of 3/5 from the starting edge 8 ') but the said round bar. 25 is also fallen and supplied to the range where 2 exists (the range of 2/5 on the downstream side beyond the range of 3/5 from the start end 8 ′). In order not to block the body, the distance t4 (inter-rod distance) in the left-right direction between the round bars 25 is set to be relatively wide, for example, 40 mm, so that the granular material can be easily passed. Thus, the inter-rod distance t3 between the square bars 26 is configured to be narrower than the inter-rod distance t4 between the round bars 25. The distance t4 is common to both the upper rod 13 and the lower rod 15.

  Further, a piece of film, paper, or the like as a granular material is likely to be blocked, so that it is forced to flow downward by the rotation of the blades 28, 28 provided on the round bar 25.

  The amount of powder passing through the discharge flow rate adjuster 11 can be adjusted by changing the rotational speed of the upper and lower flow rate adjusting rods 13 and 15.

  The distance t5 between the upper and lower rods 13 and 15 is, for example, about 15 mm in the portion between the square bars 26, and the width of the single blade 28 is, for example, about 12 mm.

  In addition, the left and right upright machine frames 29 and 29 'that are parallel to each other are provided on the left and right sides of the discharge flow rate adjusting machine 11 that are orthogonal to the machine frames 12 and 12' (see FIGS. 4 and 4). 6), a machine casing 30 of a rectangular cylindrical discharge flow rate adjuster is formed by the machine casings 12 and 12 'on the upstream and downstream sides and the left and right machine casings 29 and 29'. And the upper end flange 31 connectable with the flange 9 'of the lower end of the guide cylinder 9 of the said discharge port 8 is provided in the upper-end part periphery of these square cylinder-shaped machine frames 30, The said cylindrical cylinder-shaped said machine frame A lower end flange 31 ′ is provided on the periphery of the lower end portion of 30 (see FIG. 1).

  As shown in FIG. 1, the discharge flow rate adjuster 11 configured as described above connects the upper end flange 31 with a bolt B to the flange 9 ′ of the guide tube 9 of the granular material discharge port 8. It fixes to the said guide cylinder 9 (refer FIG. 1, FIG.9 (b)). At this time, the flow rate adjusting rods 13 and 15 are arranged so as to be in a direction orthogonal to the diameter line D of the inner and outer cylinders 1 and 2 (see FIGS. 10A and 10B). Further, as shown in FIG. 10, the relationship between the flow rate adjusting rods 13 and 15 and the opening of the granular material discharge port 8 is about 3/5 from the start edge 8 ′ of the discharge port 8. The square bar 26 is located, and the round bar 25 and the blades 28 and 28 are located in a range of about 2/5 from the position of about 3/5 from the start edge 8 ′ to the end edge 8 ″. That is, each of the flow rate adjusting rods 13 and 15 is configured by a square bar 26 in a certain range from the start edge 8 ′ to the end edge 8 ″ of the granular material discharge port 8. The other range is constituted by a round bar 25.

  Since the present invention is configured as described above, the operation of the present invention will be described next.

  First, the electric motor 17 is driven to drive the driving pulley 20 via the timing belt 37, whereby the flow rate adjusting rod 13A is rotated in the direction of arrow a. Then, by the rotation of the driving pulley 20, the upper spur gears 21, the vertical spur gears 22 and 24, and the lower spur gears 23, the upper and lower flow rate adjusting rods 13 and 15 are The direction of the arrow shown in FIG. 6, that is, the adjacent flow rate adjusting rods 13 and 15 rotate in opposite directions. When the granular material is introduced into the inner cylinder 1, the granular material flows out from the inner cylinder 1 into the annular passage 4 at an angle of repose α (see FIG. 1).

  Thereafter, by driving the electric motor 33 and rotating the upright rotating shaft 10 in the direction of arrow A, the central rotary blade 5 and the outer peripheral rotary blade 6 rotate in the direction of arrow A. Is sent through the annular passage 4 in the direction of the arrow A by the central rotary blade 5 and the outer peripheral rotary blade 6, and is dropped and supplied downward from the particulate discharge port 8.

  9A and 9B show the relationship between the movement of the rotary blades 5 and 6 at this time and the granular material carried by the rotary blades 5 and 6. FIG. 9 (a) is a plan view showing the inner and outer cylinders in a circular shape in plan view of the powder and particle feeder in FIG. 2 for linear convenience, and FIG. 9 (b) It is a side view of the same figure (a), and in the figure, mountain shaped upper part f1, f2 shows the granular material conveyed by the center rotary blade 5 and the outer periphery rotary blade 6, respectively, and mountain shaped upper part f1 ', f2 'Shows the discharge state of the granular material f after the pulsation is suppressed after passing through the discharge flow rate adjusting device 11 of the present invention, so as to correspond to the mountain tops f1, f2 before discharge. It is described in.

  The rotation of the electric motor 33 causes the central rotary blade 5 and the outer peripheral rotary blade 6 to move at a constant speed in the direction of arrow A in FIG. As shown in FIG. 9B, the granular material f in the annular passage 4 is conveyed in the direction of the arrow A by the central rotary blade 5 and the outer peripheral rotary blade 6. At this time, the granular material f It becomes the state mounted on the blade | wing (spoke) of the center rotary blade 5, and the blade | wing of the said outer periphery rotary blade 6, The granular material f mounted on each said blade | wing 5 and 6 is the said. It is transferred in the direction of arrow A together with the blades 5 and 6.

  The central rotary blade 5 is positioned from the upright rotating shaft 10 at the center of the inner and outer cylinders 1 and 2 to a position near the outer cylinder 2, and the radial length of the blade (spoke) is long, and the width of the blade is also large. Since it is wide, as shown in FIG. 9 (b), it has a conveying ability of more granular material f than the outer peripheral rotating blade 6, and more granular material f is placed on the blade. The Therefore, on the central rotary blade 5, a larger number of powder bodies f are placed than on the outer peripheral rotary blade 6, and a mountain-shaped upper portion f <b> 1 bulging upward is formed in the arrow A direction. It will be transferred.

  On the other hand, the outer peripheral rotating blade 6 is provided from the outer peripheral rotating ring 35 toward the annular passage 4, and has a short length and a narrower blade width than the central rotating blade 5. As shown in FIG. 9 (b), fewer powder particles f are placed as compared with the central rotary blade 5. Therefore, less granular material f is placed on the outer peripheral rotary blade 6 than on the central rotary blade 5, and the granular material rises to some extent on the outer peripheral rotary blade 5. The powder is transferred in the direction of arrow A in a state in which the mountain-shaped heap f2 at a position lower than the mountain-shaped heap f1 is formed.

  Thus, as shown in FIG.9 (b), the granular material f conveyed by the said rotary blades 5 and 6 is the said large mountain-shaped peak upper part f1 on the said center rotary blade 5, and three subsequent sheets. In the state in which the three small crests f2, f2, and f2 are formed on the outer peripheral rotating blade 6, they are sequentially conveyed in the direction of arrow A, and the central rotating blade 5 is moved over the granular material discharge port 8. Alternatively, every time the outer peripheral rotating blade 6 passes, the granular material f forming the mountain-shaped heap top f1, f2, f2, f2 is dropped and supplied from the discharge port 8 downward.

  Accordingly, if the discharge flow rate adjuster 11 according to the present invention is not present, the granular material f forming the mountain-shaped heap tops f1 and f2 shown in FIG. 9B falls downward from the discharge port 8. The difference in the amount of supply of the above-mentioned peak portions f1 and f2 of the granular material is reflected in the discharged amount of the granular material f that is dropped and supplied from the discharge port 8 as it is, so that a large pulsation occurs. .

  However, such pulsation can be effectively suppressed by the discharge flow rate adjuster 11 according to the present invention as will be described below.

  First, when the central rotary blade 5 passes through the granular material discharge port 5, the granular material f constituting the large mountain-shaped upper portion f <b> 1 conveyed by the central rotary blade 8 is downward from the discharge port 8. Although supplied in a drop, the granular material f is supplied in a dropped manner on the six rotating flow rate adjusting rods 13A to 13F in the upper stage of the discharge flow rate adjuster 11 (FIG. 9B). "Refer to Fig. 10 (a) and (b) granular material f").

  Since the upper flow rate adjusting rod 13 has a square rod 26 with a narrow gap between the left and right rods in the range of about 3/5 downstream from the starting end 8 ′ of the granular material discharge port 8, The granular material f falls mainly on the rectangular rod 26 (in the range of about 3/5 downstream from the starting end 8 ′) of the upper flow rate adjusting rods 13A to 13F, and the granular material f Many can be temporarily retained on the square bar 26 of the rod 13.

  Further, the lower flow rate adjusting rod 15 is also provided with a square bar 26 having a narrow left and right rod spacing in the range of about 3/5 downstream from the start end 8 ′ of the discharge port 8, and the lower flow rate adjusting rod 15. Since the flow rate adjusting rod 15 is positioned between the upper flow rate adjusting rods 13 and 13, the granular material f that has passed between the upper flow rate adjusting rods 13 and 13 is rotated at the lower flow rate adjusting rod. It is received by the 15 square bars 26 and can be temporarily retained on the square bars 26 of the lower rod 15.

  Since the flow rate adjusting rods 13 and 15 are rotating in opposite directions as described above, the granular material that has fallen and stayed on the upper and lower square bars 26 is retained by the upper and lower rods 13. , 15, i.e., the rotation of each of the square bars 26, is continuously and continuously supplied downward.

  As described above, the granular material f of the large mountain-shaped upper portion f1 carried by the central rotary blade 5 is not discharged downward at a stretch, and the flow rate adjusting rods 13 and 15 in the upper and lower stages are not discharged. After being retained by the square bar 26, the rods 13 and 15 (square bar 26) can be gradually dispersed downward and continuously discharged. In addition, the powder particles can be received by the square bar 26 having a flat surface (horizontal plane) at the top and the powder particles can be flowed downward by the square bar 26 having a corner portion positioned at the top. It is possible to smoothly and gradually make the powder particles flow downward without causing a closed state.

  After the central rotary blade 5 has passed through the discharge port 8, the three outer peripheral rotary blades 6 successively pass through the discharge port 8.

  When the outer peripheral rotary blade 6 passes through the discharge port 8, the granular material f constituting the small pile-shaped upper portion f <b> 2 that has been conveyed is dropped and supplied from the discharge port 8, but the granular material f Falls on the square bar 26 in the range of about 3/5 upstream of the upper flow rate adjusting rods 13A to 13F, and most of the granular material f is the square bar of the rod 13. In addition to staying on the upper flow rate adjusting rod 13, the granular material f dropped between the upper flow rate adjusting rods 13 and 13 is also temporarily retained by the square bar 26 of the lower flow rate adjusting rod 15. Similarly, as the flow rate adjusting rods 13 and 15 rotate, the granular material f retained on the upper and lower square bars 26 is continuously dropped and supplied continuously downward.

  As described above, after the granular material f of the small pile-shaped upper portion f2 carried by the outer peripheral rotating blade 6 is once retained by the square bars 26 of the upper and lower flow rate adjusting rods 13 and 15, the rods f 13 and 15 (square bar 26) can be gradually dispersed and continuously discharged downward by rotation.

  Therefore, the discharge flow rate adjuster 11 of the present invention has a large amount of granular material f by the large mountain-shaped upper portion f1 when the central rotary blade 5 passes, and thereafter, the three outer peripheral rotary blades 5 A relatively small amount of the granular material f by the small mountain-shaped upper portions f2, f2, and f2 due to passage is temporarily retained by the square bars 26 of the upper and lower flow rate adjusting rods 13 and 15, respectively, and the next center. By the timing immediately before the rotary blade 5 passes, the staying granular material f is gradually dispersed by the rotation of the flow rate adjusting rods 13 and 15 (square bars 26) in the upper and lower stages and supplied to fall downward. It is something that goes.

  By such an action, immediately before the next central rotary blade 5 passes through the mountain-shaped heap top f1, f2, f2, f2 of the granular material f by the central rotary blade 5 and the three outer peripheral rotary blades 6 following it. Until the timing, by gradually discharging downward from the discharge flow rate adjuster 11, the falling supply amount of the granular material f is smoothed, and as shown in FIG. It can be set as the mountain-shaped peak upper part f1 ', f2', f2 ', f2'.

  That is, the granular material that has passed through the flow rate adjusting rods 13 and 15 of the discharge flow rate adjusting device 11 from the granular material discharge port 8 is the same as the mountain-shaped heaped upper portions f1, f2, f2, and f2 in FIG. 9B. As indicated by the timing, the large raised peak f1 having a large height becomes a smooth peaked f1 ′ having a low height, and the three raised peaks f2, f2 following the raised peak f1. , F2 are also flattened up and down between the mountain-shaped heaps f2 and f2, and become mountain-shaped heaps f2 ′, f2 ′, and f2 ′ with less pulsation as a whole. As a result, the mountain-shaped heaps f1 ′ and the subsequent peaks The whole of the three mountain-shaped heaps f2 ′, f2 ′, and f2 ′ can be discharged as a substantially flat granular material with very little pulsation.

  As described above, the discharge flow rate adjuster 11 according to the present invention gradually removes the granular material from the timing when the central rotary blade 5 passes the discharge port 8 to the timing when the next central rotary blade 5 passes. By discharging, it is possible to smooth the drop supply amount of the powder and suppress pulsation. Thereby, as shown in the mountain-shaped heap tops f1 ', f2', f2 ', f2' in FIG. 9B, it is possible to realize a quantitative supply of the granular material with very little pulsation.

  In addition, if the flow rate of the powder supplied to the powder discharge port 8 suddenly increases for some reason due to the supply state of the powder or the like, the powder f is transferred to the discharge port 8. The portion of the round bar 25 where the blades 28, 28 of the upper flow rate adjusting rod 13 are present (about 3/3 from the starting end 8 'of the discharge port 8) exceeds the range of about 3/5 from the starting end 8'. (The range of the round bar 25 that is about 2/5 of the rod exceeding the range of 5) is also dropped. At this time, the granular material dropped and supplied to the range of the round bar 25 is defined as a granular material f0 (see FIGS. 9B and 10A and 10B).

  At this time, by the rotation of the blades 28 and 28 due to the rotation of the round bar 25 of the upper flow rate adjusting rod 13, the granular material f0 that has dropped onto the portion is quickly moved downward, and the lower flow rate adjusting rod 15 Passing between the round bars 25, 25, it is possible to quickly drop and supply downward.

  Thus, even if the flow rate of the granular material f increases, the granular material f is not blocked on the flow rate adjusting rods 13 and 15, and the blade 28 of the round bar 25 of the flow rate adjusting rod 13. , 28 can be quickly sent downward. Moreover, since the part of the said round bar 25 of the said flow control rods 13 and 15 has widened the space | interval between the adjacent round bars 25, even in such an emergency, a granular material is the flow control rods 13, There is an effect that it is easy to allow the granular material f to pass downward in the portion of the round bar 25 without stopping on the top 15 and blocking.

  When the conveyed granular material is in the form of a piece such as a film or paper, it can be forced to move downward by the rotation of the blades 28, 28 of the round bar 25, so Even if a large amount of the granular material is discharged and falls into the range of the round bar 25, the granular material can be smoothly delivered downward, and the occurrence of blockage of the granular material can be prevented. In addition, there is also an effect that such piece-like raw material (powder particles) can be smoothly dropped and supplied downward while being effectively solved by the lower round bar 25.

  As shown in FIG. 10, the shape of the granular material discharge port 8 may be the substantially rectangular discharge port 8 of FIG. 10A, or the shape provided with the inclined edge 8 c of FIG. It may be a triangular discharge port 8. In the case of the triangular outlet 8 shown in FIG. 10 (b), the granular material f is dispersed downward little by little from the narrow opening on the upstream side and continuously supplied onto the flow rate adjusting rods 13 and 15. Therefore, the pulsation between the central rotary blade 5 and the outer peripheral rotary blade 6 can be more effectively suppressed. Thereby, the granular material that has passed through the discharge flow rate adjuster 11 can realize a quantitative supply with less pulsation.

  When the discharge flow rate adjuster 11 of the present invention is used using the triangular powder outlet 8 (see FIG. 10 (b)), for example, in a quantitative supply of 50 g with a sampling time of 10 seconds, an error of ± 7 % To ± 13% could be realized.

  In the above embodiment, the case where powder and powder (for example, pellets, chips, etc.) are dropped and supplied has been described. However, the powder can be applied in various shapes and is in the form of a piece (film, paper, etc.). The raw materials such as can also be used. That is, the “powder body” in the present invention is a concept including a piece-like material.

  In addition, the shape of the flow rate adjusting rods 13 and 15 may be changed as appropriate depending on the powder, granule (pellet, chip, etc.), or piece (film, paper, etc.). For example, various rod shapes are conceivable, such as making the square rod portion 26 into a screw shape.

  It is also conceivable to change the size of the square bars 26 or to change the distance between the rods (the distance between the left and right sides, the distance between the top and bottom) depending on the properties of the raw material of the granular material. It can also be constituted only by the attached round bar 25.

  In addition, since the granular material with strong adhesion may adhere to the flow rate adjusting rods 13 and 15 and may be blocked, the surface of the flow rate adjusting rods 13 and 15 is coated with a fluororesin to take measures to prevent adhesion. It can be carried out.

  Since the present invention is configured as described above, the granular material transferred by the central rotary blade 5 is once received by the rectangular rod 26 having a small distance between the rods of the upper flow rate adjusting rod, and then the flow rate adjusting rod By rotating, the powder can be gradually dispersed downward and supplied, so that the pulsation of the powder can be smoothed and the powder can be supplied with high accuracy. Thereby, it is possible to realize a highly accurate quantitative supply with a short sampling time.

  Further, even if the flow rate of the granular material supplied to the granular material discharge port 8 is increased for some reason, the increased granular material can flow downward through the round rods 25 having a large distance between the rods. Therefore, it is possible to effectively prevent clogging of the granular material.

  In addition, since the powder particles can be received by the rotating upper and lower flow rate adjusting rods 13 and 15 and the powder particles can be gradually discharged downward by the rotation of each rod, the powder particles have a relatively large amount. However, once the particles are retained on the flow rate adjusting rods, the particles can be smoothly and gradually discharged downward, and the pulsation of the discharged particles can be effectively smoothed.

  Further, even if the blade 28 of the round bar 25 is a piece of granular material such as paper or film, it can be forced to flow downward by the rotation of the blade 28. Even if it is a granule, obstruction | occlusion of a raw material can be prevented effectively.

  Further, by changing the rotational speed of the flow rate adjusting rod, it is possible to suppress pulsation in an optimum state according to the particle size, properties, shape, etc. of the granular material, thereby realizing high-precision quantitative supply. Further, depending on the properties of the powder and granular material, the flow rate adjusting rod may have a single-stage configuration only in the upper stage, or the blade of the upper stage flow rate adjusting rod may be eliminated so that only the round bar is present. Various embodiments are conceivable.

  In FIG. 1, C is the rotation center axis of the upright rotating shaft 10, E in FIG. 6 is the center line in the left-right direction of the discharge flow rate adjuster 11, and the lower flow rate adjusting rod 15c is located.

  The discharge flow rate adjusting device in the granular material supply machine according to the present invention is capable of suppressing pulsation in various granular materials by changing the number of rotations of the flow rate adjusting rod in accordance with the properties of various granular materials. High quantitative supply can be realized.

DESCRIPTION OF SYMBOLS 1 Inner cylinder 2 Outer cylinder 3 Bottom plate 4 Annular passage 5 Center rotary blade 6 Outer peripheral rotary blade 8 Granule discharge port 8 'Start edge 8 "End edge 10 Upright rotary shaft 12, 12' Machine frame 13 Upper flow rate adjustment rod 13a , 13a ′ end portions 13A to 13F Upper flow rate adjusting rod 15 Lower flow rate adjusting rod 15a, 15a ′ end portions 15A to 15E Lower flow rate adjusting rod 17 Motors 21, 22, 23, 24 Spur gear 25 Round bar 26 Square bar 28 Blade 29, 29 'Upright machine frame 35 Cylindrical outer edge t1 Granule discharge gap α Repose angle

Claims (8)

An outer cylinder is erected on the bottom plate to form a powder supply case, and the inner cylinder is concentrically supported above the bottom plate via a powder discharge gap, and an upright rotating shaft is provided at the center of the bottom plate. A rotating body is formed by providing a plurality of central rotating blades located on the bottom plate on the rotating shaft, and an annular passage between the inner and outer cylinders is formed by bringing the cylindrical outer edge of the rotating body close to the inner periphery of the outer cylinder. A plurality of outer peripheral rotating blades in the annular passage direction are provided at the cylindrical outer edge, and the granular material diffused into the annular passage at a predetermined angle of repose from the granular material discharge gap is transferred to the central rotating blade and the outer peripheral rotating blade. In the discharge flow rate adjusting device in the powder and particle feeder, which is transferred along the annular passage by the rotation of the powder and discharges the powder and particles from the powder outlet provided in the annular passage.
A machine frame is provided on the lower side of the granule outlet,
A plurality of flow rate adjustment rods heading from the starting edge to the terminal edge of the granular material discharge port on the machine frame are pivotally supported at a predetermined interval in the width direction of the annular passage,
It is configured so that each of the flow rate adjusting rods adjacent to each other can be driven to rotate in opposite directions by the driving means,
Each of the flow rate adjusting rods is configured by a square bar in a certain range from the start end edge to the end edge of the granular material discharge port, and the other range is configured by a round bar.
And the discharge flow rate adjusting device in the granular material supply machine which is comprised by the distance between the rods between the said square bars narrower than the distance between the rods between the said round bars. A plurality of lower flow rate adjustment rods having the same configuration as the flow rate adjustment rods are pivotally supported in parallel with the flow rate adjustment rods at the lower position of the flow rate adjustment rods in the machine frame,
These lower flow rate adjusting rods are pivotally supported with a half-pitch offset from the upper flow rate adjusting rods so that they are located between the upper adjacent flow rate adjusting rods.
2. The discharge flow rate adjusting device in the granular material feeder according to claim 1, wherein the driving unit is configured so that the adjacent flow rate adjusting rods in the lower stage can be rotationally driven in opposite directions.   3. The discharge flow rate adjusting device in the granular material feeder according to claim 1, wherein each of the flow rate adjusting rods adjacent to the left and right is supported in a state in which the square bars change the angle by 45 degrees. .   The flow rate adjusting rod has the square bar formed in a range of 3/5 from the starting edge of the granular material discharge port, and the remaining 2/5 range is the round bar. The discharge flow volume adjustment apparatus in the granular material supply machine of crab.   5. The drive means is constituted by an electric motor and an inverter that variably controls the rotational speed of the electric motor, and the rotational speed of each flow rate adjusting rod is configured to be adjustable by the inverter. 6. Discharge flow rate adjustment device in the powder and particle feeder. A pair of blades are provided with an angular difference of 180 degrees on the outer periphery of the round bar of each flow rate adjusting rod in the upper stage,
The discharge flow rate adjusting device in the powder and particle feeder according to claim 2, wherein the blades of the adjacent flow rate adjusting rods change in angle by 90 degrees.   The upper and lower flow rate adjusting rods are connected to each other by a gear at each end, and the upper and lower flow rate adjusting rods are rotated by driving any one of the flow rate adjusting rods by the driving means. The discharge flow rate adjusting device in the granular material supply apparatus according to claim 2 or 6, wherein the apparatus is configured to be driven.   The discharge flow rate adjusting device in the granular material feeder according to any one of claims 1 to 7, wherein a width of the granular material discharge port is formed so as to be gradually widened from the starting edge side to the terminal edge side. .

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