JP2009208823A - Powder and granular material discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder and granular material discharging device capable of smoothly discharging a powder and granular material from a bag even if the powder and granular material stored in the bag such as a flexible container bag is caked. <P>SOLUTION: The powder and granular material discharging device is equipped with a device body 10 for suspending a bag 3 which stores the powder and granular material therein and has a discharging port of the powder and granular material, and a discharge promoting device 30 for promoting the discharge of the powder and granular material from the bag. The discharge promoting device is equipped with a bottom plate 35 which is located below the bag to move the powder and granular material in the bag upwardly and sidewise from its center side, and a working means 40 for working the bottom plate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a granular material discharging apparatus used for discharging granular materials contained in a bag such as a flexible container bag.

  Conventionally, when a granular material is transported from a specific place to another place, a flexible container bag is often used from the viewpoint of easy storage. This flexible container bag is formed into a bag shape from a flexible material / cloth, and a cylindrical discharge port portion is formed on the bottom surface.

  This flexible container bag is formed by filling the granular material from above with the discharge port portion closed by a string or the like, and by opening the bag by releasing the closed state of the discharge port portion by this string or the like. The granular material stored in the flexible container bag can be discharged.

  When the granular material stored in the flexible container bag is agglomerated (consolidated) due to moisture, even if the discharge port part is opened as described above, all the granular material falls. Not discharged. For example, when the granular material stored in the flexible container bag is salt, sugar or the like, the whole or a part thereof may be consolidated and become a lump larger than the diameter of the discharge port. . When solidified in this way, an operator must pulverize the granular material that has been stimulated and solidified by hitting it from the outside of the flexible container bag to be finer than the diameter of the discharge port.

  Then, the granular material discharge apparatus which discharges a granular material from a flexible container bag is proposed (for example, refer patent document 1). Such a granular material discharging device includes an apparatus main body for suspending a flexible container bag in which the granular material is housed and a discharge port portion for the granular material is formed, and discharging the granular material from the flexible container bag. And an emission promotion device for promoting the above.

In the discharge promoting device, cylinders are arranged on both sides of the flexible container bag, and a plate-like member is provided at the tip of the rod of the cylinder. Then, by reciprocating the cylinder, the side surface of the flexible container bag is repeatedly hit with a plate-like member to promote the discharge of the powder particles inside the flexible container bag.
JP 2000-296818 A

  However, since the conventional discharge promoting device disclosed in Patent Document 1 is configured to repeatedly strike the side surface of the flexible container bag with plate-like members from both sides of the flexible container bag, the granular material is instead placed in the center of the flexible container bag. There is a drawback that it is pressed and hardened. As a result, there is a problem that a bridge is generated in the vicinity of the discharge port and the powder particles cannot be discharged smoothly.

  The present invention has been proposed in order to solve the problems of the above-described conventional apparatus, and even when the granular material stored in a bag such as a flexible container bag is consolidated. An object of the present invention is to provide a granular material discharging apparatus that can smoothly discharge granular material from a bag.

  The present invention has been made in order to solve the above-mentioned problems. The main body of the apparatus for suspending a bag in which a granular material is housed and a discharge port for the granular material is formed, and the powder from the bag. In the powder discharge device including the discharge promotion device for promoting the discharge of the particles, the discharge promotion device is located below the bag and the powder particles in the bag are located above and laterally from the center side. A bottom plate that operates to move the bottom plate, and an operating means that operates the bottom plate.

  In the present invention, when the operating means operates the bottom plate, the bottom plate lifts the bottom of the bag upward so as to move the granular material in the bag from the center side to the side. Further, the bottom plate repeats the operation of returning to the original position. By the operation of the bottom plate, even if the powder is solidified, the portion can be crushed or unraveled to prevent bridging and stabilize the powder from the bag. Can be easily discharged.

  A plurality of the bottom plates of the granular material discharging apparatus of the present invention are provided, and each bottom plate is provided so as to be rotatable in the vertical direction around a support shaft.

  In such a granular material discharging apparatus, by providing a plurality of bottom plates, the pushed-up area of the bag bottom can be increased.

  The free end of the bottom plate of the powder body discharging apparatus on the center side of the apparatus main body is to be changed to a lowered position below the support shaft and an elevated position above the support shaft.

  In such a granular material discharging apparatus, the free end of the bottom plate moves up and down between a lowered position below the support shaft and an elevated position above the support shaft, so that the operating stroke of the bottom plate can be increased. As a result, the powder particles consolidated more effectively can be crushed or unraveled. As a result, the powder particles can be stably discharged from the bag more easily.

The operating means of the granular material discharging apparatus of the present invention comprises an annular contraction portion having an opening portion penetrating in the vertical direction and extending or contracting in the vertical direction by expansion or contraction by compressed air. A powder body discharge port portion is inserted through the opening, and the bottom plate is operated by an up and down operation of the annular contraction portion.

  Since this granular material discharge | emission apparatus operates a some bottom plate by an annular contraction part, the pushing-up area which acts on a bottom plate becomes large, and can operate a some bottom plate with strong force.

  In the granular material discharging apparatus according to the present invention, the suspending height position of the bag is provided to be adjustable.

  That is, such a granular material discharge device is such that the bag becomes thinner as the granular material decreases and becomes longer in the vertical direction, but the bottom plate can be adjusted by adjusting the hanging height of the bag to a predetermined height. As a result, it is possible to stably act on the bottom of the bag, so that stable discharge is possible.

  According to the present invention, even if the granular material is consolidated by the operation of the bottom plate, the portion can be crushed or unraveled. Difficult powders can be discharged smoothly and reliably.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1-10 shows one Embodiment of the granular material discharge | emission apparatus which concerns on this invention. As shown in FIGS. 1 to 3, the granular material discharge device 1 includes a device main body 10 that suspends a flexible container bag (hereinafter referred to as a bag) 3 as a bag in which salt as a granular material is expropriated. I have.

  The apparatus body 10 includes a gantry 11 and a top member 20, and the gantry 11 includes four columns (front columns 14a and 14a and rear columns 14b and 14b) and upper and lower columns connected between the front and rear columns 14a and 14b. Both side connecting members 15a and 15b, and upper and lower rear connecting members 16a and 16b installed between the rear columns 14b and 14b.

  An elevating cylinder 17 is fixed upward at the upper ends of the front and rear columns 14a and 14b, and the top member 20 is connected to the gantry 11 through the rod 17a of the elevating cylinder 17 so as to be movable up and down. On the lower surface of the top member 20, a hanger portion 21 for detachably locking the upper portion of the bag 3 is provided.

  A floor plate 25 having a central opening is horizontally installed on the lower connecting members 15a and 16a, and a discharge promoting device 30 is attached to the upper surface of the floor plate 25. As shown in FIGS. 4 and 5, the discharge promoting device 30 operates in a vertical direction with respect to the base frame 32 fixed to the floor plate 25 via a plurality of legs 31 made of rubber or the like. There is provided a bottom plate 35 that can be freely (rotated), and an operating means 40 that rotates the bottom plate 35 up and down.

  The base frame 32 includes an upper base frame 32a and a lower base frame 32b that are rectangular frames in plan view.

  The bottom plate 35 includes a plurality of (for example, four in the present embodiment) plate members arranged as a set, and each bottom plate 35 of the apparatus main body 10 is arranged so that both side edges 35a and 35a thereof are close to each other. It inclines so that the width becomes narrower toward the center. Further, the front edge 35b of each bottom plate 35 is formed in an arc shape, and the discharge port 3a protruding below the bag 3 is inserted into the center of the apparatus body 10 by the front edge 35b of the bottom plate 35. An opening 36 is formed.

  A plurality of stays 37 protrude downward from the lower surface of the outer portion of each bottom plate 35 at intervals, and these stays 37 are horizontally attached to an attachment portion 33 erected on the upper surface of the upper base frame 32a. Are connected via a support shaft 34. Therefore, each bottom plate 35 is rotatable up and down about the support shaft 34 so that the tip end side (the center side of the apparatus main body 10) which is the free end side thereof moves up and down.

  Moreover, each bottom plate 35 is comprised so that it may act | operate simultaneously by the air lifter 40 as an operation means. The air lifter 40 includes a bellows-like annular contraction portion 41 that can be expanded or contracted by air pressure, an upper member 43 provided at the upper end of the annular contraction portion 41, and an expansion or contraction operation of the annular contraction portion 41. And a plurality of connecting members 44 composed of vertically moving rods.

  The annular contraction part 41 is formed in an annular shape having an opening 41a penetrating in the vertical direction while a soft member having elasticity such as rubber that can expand or contract is formed in a bellows shape. An air intake / exhaust means (not shown) is connected to the annular contraction portion 41, and air is press-fitted or exhausted into the annular contraction portion 41 from this means, and the annular contraction portion 41 is caused by the air pressure. It can be expanded or contracted.

  An annular contraction portion support plate 45 is interposed between the upper base frame 32a and the lower base frame 32b, and the lower surface of the annular contraction portion 41 is fixed to the annular contraction portion support plate 45 with bolts 46.

  The upper member 43 provided at the upper end of the annular contracting portion 41 is formed of a circular annular plate material, and a guide roller 47 made of a rubber material is rotatably supported on the upper surface thereof via a roller receiving member 48. Has been. This guide roller 47 is provided with respect to each bottom plate 35, is in rolling contact with the bottom plate 35 from below, and supports the center side (free end side) of the support shaft 34 from below. When the annular contracting portion 41 contracts, the guide roller 47 is positioned below the support shaft 34, and the bottom plate 35 is configured to maintain a lowered position where the free end side is inclined downward.

  Further, when the annular contraction portion 41 extends upward, as shown in FIG. 2, the guide roller 47 is positioned above the support shaft 34, and the bottom plate 35 is repositioned to a rising position where the center side is inclined upward. Is configured to do. The guide roller 47 guides the bottom plate 35 while rolling the bottom plate lower surface when the bottom plate 35 rotates.

  The upper end of the connecting member 44 is connected to the outer peripheral portion of the upper member 43 at equal intervals in the circumferential direction. A rod 49 b of the cylinder 49 is connected to the lower end of each connecting member 44.

  A chucking device 60 is fixed to the cylinder body 49a. That is, as shown in FIGS. 4, 6 and 7, the chucking device 60 is inserted and held in the support 64 attached to the cylinder body 49a that moves up and down and the holding portion 64a provided in the center portion of the support 64. A cylindrical discharge portion 61, and a clamp portion 63 that moves up and down with respect to the cylindrical discharge portion 61 by an elevating cylinder 62 so as to sandwich and fix the discharge port portion 3a of the bag 3 to the cylindrical discharge portion 61. Prepare.

  The elevating cylinder 62 is vertically attached to a support 64 that holds the cylindrical discharge portion 61, and a bracket 69 is attached to the elevating cylinder 62 so as to be movable up and down. The clamp part 63 is supported horizontally by the bracket 69, and the clamp part 63 is configured to be movable up and down in a horizontal state.

  The clamp portion 63 includes an annular main body 65 having a U-shaped cross section whose inner peripheral surface is open, an annular tube 66 accommodated in the annular main body 65, and an annular rubber packing 67 disposed on the upper surface of the annular main body 65. And an annular rubber packing presser plate 68 disposed on the upper surface of the rubber packing 67. The rubber packing presser plate 68 fastens and fixes the rubber packing 67 to the upper surface of the annular main body 65 from above via bolts 70.

  The inner diameter D1 of the rubber packing 67 is set smaller than the inner diameter D2 of the cylindrical discharge portion 61 as shown in FIG. Further, the inner diameter D3 of the annular main body 65 is set larger than the outer diameter of the cylindrical discharge portion 61 so that the annular main body 65 can be externally fitted to the upper portion of the cylindrical discharge portion 61 from above.

  Therefore, the inner peripheral portion 67 a of the rubber packing 67 protrudes toward the center side over the entire circumference of the cylindrical discharge portion 61 from the inner peripheral surface of the cylindrical discharge portion 61. Thus, since the inner peripheral portion 67a of the rubber packing 67 protrudes toward the center side from the inner peripheral surface of the cylindrical discharge portion 61, the annular main body 65 is fitted into the cylindrical discharge portion 61 as shown in FIG. When combined, the discharge port portion 3a can be bent firmly toward the center side of the inner peripheral surface of the cylindrical discharge portion 61 and firmly held.

  Moreover, as shown in FIG. 1, the sensor 50 for setting the raising position of the bottom plate 35 is provided in the mount frame 11 side (for example, the rear connection member 16a). The sensor 50 detects a detected part 51 provided on a member that moves up and down together with the bottom plate 35 (for example, the support 64 side). Based on the detection signal of the sensor 50, the rising position of the bottom plate 35 can be set. Note that the vertical position of the sensor 50 can be changed, and the operating stroke of the bottom plate 35 can be adjusted by changing the vertical position of the sensor 50.

  A vibration device 70 that vibrates the bottom of the bag is attached to the base frame 32 together with the discharge promoting device 30.

  The granular material discharge apparatus 1 concerning this Embodiment consists of the above structure, and demonstrates operation | movement of this apparatus 1 next.

  First, the upper part of the bag 3 in which powder particles such as salt are accommodated is suspended and set on the hanger part 21 provided on the upper part of the apparatus main body 10. At this time, the height of the bag 3 is adjusted to such an extent that the lower part of the bag 3 is brought into contact with or placed on the bottom plate 35 in the lowered position (the degree that the weight of the granular material acts on the bottom plate 35). Further, the midway part of the discharge port part 3a is closed by a closing tool 3b such as a string or a belt.

  Further, the discharge port 3 a provided at the lower part of the bag 3 is chucked by the chucking device 60. Specifically, the discharge port portion 3 a is inserted into the opening 36 of the bottom plate 35, the opening portion 41 a of the annular contraction portion 41, and the clamp portion 63, and the lower portion of the mouth portion 3 a is covered with the cylindrical discharge portion 61. At this time, the cylinder main body 49a and the chucking device 60 are raised, and the clamp part 63 is also in the standby position raised with respect to the cylindrical discharge part 61 (see FIGS. 1 and 9).

  Further, when the elevating cylinder 62 is operated, the clamp part 63 at the standby position is lowered. The inner peripheral part 67a of the rubber packing 67 of the clamp part 63 is pressed and clamped on the upper surface of the cylindrical discharge part 61 so that the discharge port part 3a is folded from the outside to the inside. In addition, when compressed air is supplied to the tube 66, the tube 66 expands in the inner diameter direction, so that the discharge port portion 3 a is pressed against the outer peripheral surface of the cylindrical discharge portion 61 and is sandwiched between the cylindrical discharge portions 61. (See FIG. 10). Thereby, chucking is completed, and the discharge port portion 3a and the cylindrical discharge portion 61 are connected.

  When the chucking is completed, the chucking device 60 is lowered to a predetermined height by releasing the closing body 3b such as the outlet string and extending the rod 49b of the cylinder 49 (see FIG. 8A). Thus, the slack of the discharge port portion 3a can be prevented by lowering the chucking device 60 to a predetermined height.

  Next, the particulate discharge operation is started. Specifically, when air is press-fitted into the annular contracting portion 41 of the air lifter 40 and the air lifter 40 is lifted, the bottom plates 35 rotate simultaneously around the support shaft 34 with the free end side above the support shaft 34. Move. By rotating the bottom plate 35 upward, the granular material at the center of the bottom of the bag 3 is lifted and moved from below toward the outer peripheral direction (see FIGS. 2 and 8B).

  Further, when the air in the annular contraction part 41 is discharged, the bottom plate 35 is rotated downward due to the weight of the bottom plate 35 and the granular material (see FIG. 3). The powder particles easily flow into the central cylindrical discharge portion 61 along the bottom plate 35 that returns and slopes downward. Thus, by the vertical movement of the bottom plate 35, the solidified granular material can be effectively crushed or broken in the bag 3 and activated, and the granular material can be discharged smoothly. it can. The chucking device 60 also moves up and down in conjunction with the vertical movement of the bottom plate 35.

  Further, as shown in FIG. 10, the discharge port portion 3a is folded by the rubber packing 67 closer to the center side of the cylindrical discharge portion 61 than the inner peripheral surface of the cylindrical discharge portion 61. It does not enter between the exit part 3a and the cylindrical discharge part 61.

  Further, since the discharge port portion 3a is covered with the cylindrical discharge portion 61 and connected to the cylindrical discharge portion 61 via the rubber packing 67 and the tube 66, the discharge port portion 3a, the cylindrical discharge portion 61, In this case, the powder particles passing through the cylindrical discharge portion 61 from the discharge port portion 3a are not dusted and inadvertently scattered.

  Moreover, since the discharge port portion 3a is configured to cover the cylindrical discharge portion 61 and to be connected to the cylindrical discharge portion 61 via the rubber packing 67 and the tube 66, the diameter of the cylindrical discharge portion 61 is different. Even in this case, as described above, the rubber packing 67 prevents the powder particles from entering between the discharge port portion 3a and the cylindrical discharge portion 61, and the cylindrical discharge due to the elastic force in the diameter direction of the tube 66. The difference in the diameter of the part 61 can be absorbed and reliably chucked.

  The operating speed and stroke of the bottom plate 35 can be set as appropriate according to the material of the powder and the solidified state. The operation mode according to the state of the powder and granular material can be set, and the bottom plate can be moved up and down at a fixed position to break up or break up the powder particle and discharge it. The operation mode is, for example, operating in the long stroke mode of the bottom plate 35, and the bottom plate 35 is slowly moved up and down. In this long stroke mode operation, the bottom plate 35 is rotated at the normal speed according to the material of the granular material, the solidified state, and the like, with the position of the ascending position and the descending position of the bottom plate 35 set by the sensor 50. It is a driving to move.

  Further, a circulation mode in which a long stroke operation and a short stroke jogging operation are combined is also possible. That is, the short stroke jogging operation is an operation in which the bottom plate 35 is rotated at a speed shorter than the long stroke between the rising position and the lowering position of the bottom plate 35 set by the sensor 50 and faster than the long stroke. It is.

  Such a circulation mode that combines a long stroke operation and a short stroke jogging operation, for example, performs a plurality of long stroke operations, then performs a short stroke jogging operation, and then performs a long stroke from the raised position of the bottom plate 35. The bottom plate 35 is slowly lowered at a speed slower than the operation. By slowly lowering the bottom plate 35 in this way, it is possible to smoothly discharge the powder that has been crushed or unraveled by the rotation of the bottom plate 35.

  Moreover, since air is press-fitted into the annular contraction portion 41 of the air lifter 40 and the air lifter 40 is lifted, a strong rising pressure of the air lifter 40 is obtained, and the bottom is resisted against the weight of the granular material. The plate 35 can be reliably raised.

  Although the internal volume decreases with the discharge of the powder, the bag 3 becomes thinner with the decrease of the powder and becomes longer in the vertical direction. Accordingly, the cylinder 17 at the upper end of the gantry 11 is operated so that the bottom of the bag 3 can be constantly pushed up, and the top member 20 is adjusted upward by the length of the bag 3. As a result, since the optimum weight of the bag 3 acts on the bottom plate 35, stable discharge becomes possible.

  When the discharge of the powder is completed, the opposite process is performed. That is, the bottom plate 35 is lowered and the chucking device 60 is raised. Further, the air in the tube 66 is discharged, the clamp part 63 is raised, and the chucking of the discharge port part 3a is released. Thus, when the discharge part 3a is lifted and the discharge port part 3a is removed from the cylindrical discharge part 61 after the discharge operation is finished, the granular material is interposed between the discharge port part 3a and the cylindrical discharge part 61. Since it does not remain, such a granular material is not scattered as dust, contaminates the floor surface, and does not deteriorate the working environment.

  The present invention is not limited to the embodiment described above. For example, as shown in FIG. 11 and FIG. 12, the bottom plate 35 has a plurality of push-up portions 35c provided in a radial shape (umbrella shape). A plurality of inclined placement plates 75 on which the lower portion of the bag 3 is placed are provided on the gantry 11 side. The push-up portion 35 c of the bottom plate 35 is moved up and down by the air lifter 40 with respect to the inclined mounting plate 75 through a notch 76 formed in the inclined mounting plate 75.

  FIG. 11A shows a state where the bottom plate 35 is in the lowered position. FIG. 5B shows a state where the bottom plate 35 is raised. Even in such a case, the lower plate 35 is once lifted by the rising bottom plate 35, and the bottom plate 35 is lowered to guide the powder particles with the inclined mounting plate 75 and connected to the discharge port 3a. It is possible to discharge smoothly from the shape discharge portion 61.

  The operation of the bottom plate 35 is not limited to the case where the plate-like bottom plate 35 is rotated in the vertical direction as described above, or the umbrella-shaped bottom plate 35 is raised and lowered. By lifting the central part of the bag from the lower side of the bag from the side so as to eliminate the consolidated state of the granular material, the granular material in the bag can be The operation is performed so that force is applied in a direction of moving from side to side (for example, upward and radial).

It is a whole front view of the granular material discharge apparatus which shows one embodiment of this invention. It is the whole front view of the state which operated the bottom plate of the granular material discharge device upwards. It is the whole front view of the state which operated the bottom plate of the granular material discharge device below. It is a cross-sectional front view which shows the principal part of the same granular material discharge apparatus. It is a top view including the partial cross section which shows the principal part of the granular material discharge apparatus. It is a front view containing the partial cross section which shows the chucking apparatus of the same granular material discharge | emission apparatus. It is a top view which shows the chucking apparatus of the same granular material discharge | emission apparatus. The operation | movement of the bottom plate of the same granular material discharge | emission apparatus is shown, (a) is a schematic sectional drawing which shows the descent position of a bottom plate, (b) is a schematic sectional drawing which shows the raising position of a bottom plate. It is sectional drawing of the state which showed the principal part of the chucking apparatus of the same granular material discharge | emission apparatus, and the clamp part raised. It is sectional drawing of the state which showed the principal part of the chucking apparatus of the same granular material discharge | emission apparatus, and the clamp part fell. FIG. 5 shows another embodiment of the present invention, in which (a) is a schematic cross-sectional view showing the lowered position of the bottom plate, and (b) is a schematic cross-sectional view showing the raised position of the bottom plate. It is a top view of the bottom plate and the inclined mounting plate.

Explanation of symbols

1 Pulverizer 3 Flexible container bag (bag)
3a Discharge port 10 Device body 11 Base 20 Top member 30 Discharge promotion device 35 Bottom plate 40 Air lifter (actuating means)
41 annular contraction part 43 upper member 44 connection member 60 chucking device 61 cylindrical discharge part 62 lifting cylinder 63 clamp part

Claims (5)

Powder comprising an apparatus main body for suspending a bag in which the powder is stored and a discharge port for the powder is formed, and a discharge promoting device for promoting discharge of the powder from the bag In body discharge device,
The discharge promoting device includes a bottom plate that operates to move the powder particles in the bag from the lower side to the upper side and from the center side to the side, and an operating means that operates the bottom plate. A device for discharging particulate matter from a bag characterized by   2. The granular material discharging apparatus according to claim 1, wherein a plurality of the bottom plates are provided, and each bottom plate is provided so as to be rotatable in the vertical direction around a support shaft. Powder discharging device.   The granular material discharging apparatus according to claim 2, wherein the free end of the bottom plate on the center side of the apparatus main body is located at a lowered position below the support shaft and an elevated position above the support shaft. The granular material discharging apparatus characterized by changing.   The granular material discharging apparatus according to any one of claims 1 to 3, wherein the operating means has an opening that penetrates in a vertical direction and expands and contracts in a vertical direction by expansion or contraction by exhaust air. A granular material discharging apparatus comprising an annular contraction portion, wherein the discharge port portion is inserted into an opening portion of the annular contraction portion, and the bottom plate is operated by an expansion / contraction operation in the vertical direction of the annular contraction portion.   The granular material discharging apparatus according to claim 1, wherein the hanging height position of the bag is adjustable.

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