JP2004018013A - Powder feeding equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide powder feeding equipment which prevents a powder from being solidified by the consolidation of the powder, can feed a necessary amount of powder when needed, and can handle the powder without touch of an operator. <P>SOLUTION: The powder feeding equipment includes a plurality of containers (6) having an outlet (4) which can be opened/closed, a tank (8) coupled with the container (6) via the outlet (4) for receiving the powder, and a volumetric feeder machine (10) for measuring a predetermined quantity of the powder in the tank (8) and feeding to a destination. A necessary number of the containers (6) are sequentially coupled with the tank (8) depending on the quantity of the powder to be fed to the destination. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a powder supply device, more specifically, prevents solidification of powder in a storage tank, and also enables a required amount of powder to be supplied when necessary, and furthermore, the powder is exposed to an operator or the like. The present invention relates to a powder supply facility in which no powder is supplied.
[0002]
[Prior art]
As a powder supply facility for storing powders such as chemicals, medicines, and foodstuffs in a storage tank and measuring and supplying a predetermined amount to a supply destination, for example, a fixed amount provided with a rotary table having a measuring means in the storage tank Feeding devices are known.
[0003]
In a typical example of this quantitative supply device, a rotary table is provided at a bottom portion in a storage tank, having a plurality of measuring chambers as measuring means in a circumferential direction of an outer periphery. By rotating the rotary table, the powder in the storage tank is sequentially introduced into the measuring chamber and sequentially discharged to the discharge port connected to the supply destination. Therefore, by defining the volume of the measuring chamber and the number of rotations of the rotary table, a predetermined amount of powder is measured and fed.
[0004]
[Problems to be solved by the invention]
However, the conventional powder quantitative supply device of the above-described embodiment has the following problems to be solved.
[0005]
(1) Supply of necessary quantity when needed:
A relatively large amount of powder is stored in the storage tank so as to correspond to the required amount of the supply destination. Therefore, for example, when the supply of the powder is irregular, the powder is liable to be gradually compacted and solidified by its weight in the storage tank. In order to prevent this, a stirring blade which rotates together with the rotary table is provided in the storage tank. However, depending on the degree of solidification of the powder, the rotary table and the stirring blade do not move even if they are moved, or even if they are forcibly moved, the powder does not fall on the rotary table and becomes a bridge state, and the rotary table runs idle. There is a problem that it is difficult to supply a required amount of powder when needed, for example, powder cannot be supplied only by itself.
[0006]
(2) Powders such as disinfectants:
Usually, the powder is filled by opening the bag enclosed in the storage tank, but when handling powder such as a disinfectant, it is necessary to prevent the powder and its gas from touching the workers etc. .
[0007]
The present invention has been made in view of the above-mentioned facts, and a technical problem of the present invention is to prevent solidification due to compaction of powder so that a required amount of powder can be supplied when necessary, and to supply powder to an operator or the like. An object of the present invention is to provide a powder supply facility which can be handled without touching the powder.
[0008]
[Means for Solving the Problems]
According to the present invention, as a powder supply facility for solving the above technical problem, a plurality of containers each containing a powder and having an openable and closable outlet, and connecting the outlets to the powder in the container. A storage tank for receiving the body, and a constant-rate feeder that measures a predetermined amount of powder in the storage tank and discharges the powder to a supply destination, and a required number of containers are provided in the storage tank according to the supply amount of the powder to the supply destination. The powder supply equipment is sequentially connected to the powder supply equipment.
[0009]
In the present invention, the powder is stored in a plurality of containers separately, the containers are sequentially connected to the storage tanks according to the amount required for supply, and the powder is filled, and this is supplied to the supply destination by the quantitative supply machine. Supply a predetermined amount. Then, the amount of powder in the container and the storage tank is reduced, solidification due to compaction is prevented, and a required amount of powder can be supplied when required. Further, by connecting the container to the storage tank and filling the storage tank with the powder, the powder is prevented from touching an operator or the like.
[0010]
In a preferred embodiment, the container has a container body provided with a discharge port at a lower end, a valve body provided at the discharge port and always closing the discharge port, and one end connected to the valve body and the inside of the container body. A shaft member extending upward and having the other end protruding outward, gripping the protruding end and opening and closing the valve body. The container may be formed by a flexible bag having an outlet at the lower end.
[0011]
In a preferred embodiment, the reservoir and the metering device also include a plurality of injection ports for injecting compressed air into the storage tank, and each of the injection ports is supplied with compressed air via a check valve. Further, the storage tank and the metering device are provided with powder stirring means, and the stirring means are provided with a plurality of injection ports for injecting compressed air, and compressed air is supplied to each of the injection ports via a check valve. Is done.
[0012]
Further, in a preferred embodiment, a flexible pipe member is connected to the powder supply port of the metering device. Further, the powder discharged from the metering device is dissolved in water via a dissolving means and sent to a transport pipe leading to a supply destination.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the powder supply equipment configured according to the present invention will be described in more detail with reference to the accompanying drawings illustrating preferred embodiments.
[0014]
Referring to FIG. 1, the powder supply equipment includes a plurality of containers 6 (one shown) each having a freely openable and closable outlet 4 for accommodating powder, and a container 6 having an outlet. The storage tank 8 is connected via the storage tank 4 (as shown in FIG. 1) to receive the powder, and a fixed-rate feeder 10 that measures a predetermined amount of the powder in the storage tank 8 and discharges the powder to a destination. The storage tank 8 is mounted on a support frame 12, and the metering device 10 is mounted on the lower surface of the storage tank 8. A required number of the plurality of containers 6 are sequentially connected to the storage tank 8 according to the amount of powder supplied to the supply destination.
[0015]
The container 6 will be described with reference to FIG. The container 6 includes a container body 14 having a discharge port 4 formed at a lower end, a cone 16 which is a valve body provided in the discharge port 4 and always closing the discharge port 4, and one end connected to the cone 16. And a cone rod 18 which is a shaft member extending upward in the inside 14 and having the other end protruding outward. The discharge port 4 is opened and closed by operating the cone 16 while gripping the protruding end of the cone rod 18. The cone rod 18 is urged by the urging means 20 having a spring disposed in the container body 14 so that the cone 16 closes the outlet 4.
[0016]
The container body 14 includes a cylindrical vertical body 14a, a top lid 14c having a powder inlet 14b, a funnel-shaped bottom 14d having a cone 16 in contact with the outlet 4, and a bottom 14d. A cylindrical guide portion 14e is formed at the distal end portion and is connected to the storage tank 8 so as to be freely inserted and removed. A frame 14f for storing, moving, placing on the storage tank 8, and the like is provided on a lower outer periphery of the main body 14a.
[0017]
The cone 16 has a hollow conical shape, and a cone seal 17 serving as a sealing material that is in contact with the discharge port 4 is attached to the outer peripheral edge of the bottom surface, and the top is connected to a cone rod 18.
[0018]
The cone rod 18 is slidably guided up and down by a shaft guide 14g attached to the upper lid portion 14c. The biasing means 20 includes a compression coil spring 21 between the shaft guide 14 g and the pin 19 of the cone rod 18. The cone rod 18 is passed through the compression coil spring 21. The protruding upper end of the cone rod 18 is provided with a disk-shaped flange portion 22 which is releasably gripped by valve opening / closing means (the valve opening / closing means will be described later).
[0019]
The storage tank 8 will be described with reference to FIGS. The storage tank 8 is formed in a cylindrical container shape, and includes a bottom plate 8a provided with a discharge port 24, a ceiling plate 8b provided with a hollow connecting tube 26, and a cylindrical container body 8c. Further, on the bottom plate 8a, there is provided a stirring blade 30 which has a drive shaft 28 penetrating the bottom plate 8a and is a powder stirring means which is rotated in a predetermined direction R about an axis 9 extending in the vertical direction.
[0020]
The container body 8c is provided with injection nozzles 32, which are injection openings for compressed air, which are opened at eight locations in the circumferential direction of the peripheral edge at equal intervals in the vicinity of the stirring blade 30. The bottom plate 8a is provided with injection nozzles 32 that open toward the stirring blade 30 at four locations around the axis 9 at equal intervals. Each of the injection nozzles 32 is supplied with dry compressed air from a compressed air source 62 via a check valve 64. The compressed air is supplied with its injection amount, injection interval and the like controlled freely.
[0021]
The check valve 64 may be a known one. For example, a poppet valve in which a valve body moves perpendicularly to a valve seat, or a swing catch valve in which a valve plate swings open and close about a hinge with respect to the valve seat, may be used. Can be. Then, in order to reliably prevent the powder from flowing back in the direction of the compressed air source, the valve body or the valve plate is pressed by a spring 65 or the like, which is a well-known means, and the valve is opened only when compressed air is flowed. It is good to
[0022]
The upper end open end of the connecting cylinder 26 has an inner diameter sized to allow the guide portion 14e of the discharge port 4 of the container 6 to be freely inserted via a seal member (not shown). A lid member that closes its opening, a butterfly valve that can be opened and closed, and the like are attached to the connection cylinder 26 (all are not shown). In addition, the ceiling plate 8b is provided with a dust collection port 8d connected to a dust collection facility. Four brackets 8e for mounting the storage tank 8 on the support frame 12 (FIG. 1) are provided on the outer peripheral portion of the container body 8c.
[0023]
The stirring blade 30 includes a pair of radiating blades 31 extending radially in opposite directions around the axis 9 to the inner peripheral portion of the container body 8c. Each of the radiating wings 31 has an upwardly projecting hollow triangular cross section communicating therewith, and a radial end portion is bent toward the rotation direction R and protrudes upward. Pressurized air is supplied to the radiating wing 31 from the compressed air source 62 through the above-described check valve 64 through the drive shaft 28 into the hollow portion of the radiating wing 31. Has a plurality of injection ports 33 formed therein.
[0024]
The quantitative supply device 10 will be described with reference to FIGS. The metering device 10 includes a cylindrical container body 34, a drive shaft 38 disposed on the bottom plate 36 of the container body 34, and having a drive shaft 38 penetrating the bottom plate 36, and having a predetermined rotation direction RR about the axis 11 extending in the vertical direction. And a stirring blade 42 as stirring means integrally provided on the rotating table 40. The fixed-quantity supply device 10 includes a drive source 44 that drives the drive shaft 38 to rotate.
[0025]
The container body 34 has a cylindrical shape having an inner diameter substantially the same size as the discharge port 24 of the storage tank 8, a supply port 46 is formed in the bottom plate 36, and an upper end of the cylinder has a mounting flange 47. And is attached to the outlet 24 of the bottom plate 8a of the storage tank 8.
[0026]
The turntable 40 includes a plurality of measuring chambers 40a, each of which is open at the top and bottom and in the radially outward direction, as measuring means, in the outer circumferential direction. The outer and lower openings of the measuring chamber 40a are substantially closed by the peripheral wall of the container body 34 and the bottom plate 36. When the rotary table 40 is rotated in a predetermined direction RR, the powder in the container body 34 is sequentially introduced into the measuring chamber 40a from the upper opening, and the upper opening is also closed at the part of the cutting plate 40b, and the powder is weighed. It is confined in the chamber 40a. At the center of the cutting plate 40b in the rotation direction RR, the lower opening is opened to the supply port 46, and the powder in the measuring chamber 40a is discharged. Therefore, by defining the volume of the measuring chamber 40 a and the number of rotations of the turntable 40, a predetermined amount of powder is measured and discharged to the supply port 46.
[0027]
The cylindrical container body 34 is provided with an injection nozzle 48 that is an injection port for compressed air that opens at three locations on the periphery and at the lower part near the stirring blade 42. Similar to the injection nozzle 32 provided in the storage tank 8 described above, the dry compressed air from the compressed air source 62 is supplied to the injection nozzle 48 via the check valve 64 while controlling the injection amount, the injection interval, and the like. .
[0028]
The stirring blade 42 includes a pair of radial blades 43, 43 extending radially in opposite directions around the axis 11 to the inner peripheral portion of the container body 34. Each of the radiating wings 43 has a hollow triangular cross-section that communicates upward and protrudes upward, and a tip end in the radial direction projects upward. Pressurized air is supplied to the radiating wing 43 from the compressed air source 62 through the above-described check valve 64 through the drive shaft 38 into the hollow portion thereof, and the radiating wing 43 has a surface on the ridge line at the upper end of the triangular cross section and on the rotation direction RR side. Has a plurality of injection ports 50 formed therein.
[0029]
Referring to FIG. 1 and FIG. 7 which is a detailed view thereof, a flexible pipe member, for example, a chute 70 formed of a synthetic resin such as soft vinyl chloride is connected to the supply port 46 of the metering device 10. Have been. The other end and lower end of the chute 70 are connected via a feeder outlet valve 72 to a dissolving cone 52 which is a dissolving means for dissolving the discharged powder in water. Dissolved water from the dissolving cone 52 flows to the ejector 54a of the transport pipe 54 to which the flowing water is pumped, is sucked by the suction action of the ejector 54a, and is sent to the target place by the transport pipe 54.
[0030]
In the dissolving cone 52, the water of the water supply source 53 is discharged from a plurality of nozzles 52b on the periphery of the upper end portion of the funnel-shaped main body 52a that expands upward, and the discharged water spirals along the inner surface of the funnel-shaped main body 52a. And she is swept down. The powder is dissolved by feeding the powder that has passed through the chute 70 into this flow. The melting cone 52 is provided with an overflow port 52c.
[0031]
With reference to FIG. 8, an example of an installation form of the powder supply equipment configured as described above will be described. Next to the powder storage tank 8 and the fixed-quantity feeder 10, there are a plurality of containers 6 containing powder at intervals, and a plurality of rows in a three-stage shelf 56 in a direction perpendicular to the plane of FIG. Is stored. A stacker crane 58 is provided between the storage tank 8 and the fixed-quantity feeder 10 and the shelf 56, and the container 6 on the shelf 56 is appropriately taken in and out as needed by the stacker crane 58. The guide portion 14 e of the discharge port 4 is inserted into the connecting cylinder 26 and is placed on the upper surface 8.
[0032]
Above the mounted container 6, a valve opening / closing means 60 is provided. The valve opening / closing means 60 is provided with a pneumatic cylinder which is opened and closed by a pneumatic cylinder in a horizontal direction and detachably holds the flange 22 of the cone rod 18 of the container 6 and moves the cone rod 18 in the vertical direction. The cone 16 serving as a valve is opened and closed.
[0033]
With reference to FIG. 9, an embodiment using a flexible container 80, which is another embodiment of a container for storing powder, will be described. The flexible container bag 80 is a well-known flexible bag formed of a flexible bag and used to store powder and the like. The flexible container bag 80 has a discharge port 80a that is tied openably and closably with a tape, a rope, or the like at the lower part of the bag, and a hanging rope 80b at the upper part. The flexible container bag 80 in which the powder is stored is suspended and moved by the hanging fitting 82 using the electric chain block 84 at the storage location, and is positioned on the storage tank 8 by inserting the discharge port 80a into the connecting cylinder 26. Then, the discharge port 80a is opened by unwrapping the tape, rope, or the like that closes the discharge port 80a, and the powder is filled in the storage tank 8.
[0034]
The operation of the powder supply equipment as described above will be described.
[0035]
(1) Supply the required amount of powder when needed:
The powder is divided and stored in a plurality of containers, container 6 or flexible container bag 80, and the containers are sequentially connected to storage tank 8 according to the required amount of the supply destination, and the powder is filled in storage tank 8. Since the supplied powder is metered in a predetermined amount by the quantitative supply device 10 and supplied to the supply destination, the amount of powder contained in the container and the storage tank can be reduced, and solidification of the powder due to compaction can be prevented. In addition, the stirrer 30 is provided in the storage tank 8 and the stirrer 42 is provided in the quantitative supply device 10, and the compressed air is periodically injected into the storage tank 8 and / or the quantitative supply device 10 from the peripheral wall, the stirring means, or the like. Further, solidification of the powder can be further prevented. Therefore, a required amount of powder can be supplied when needed.
[0036]
(2) Powder does not come in contact with workers:
Since the container 6 or the flexible container bag 80, which is a container for storing the powder, is placed on the storage tank 8 with its discharge port connected via the connection tube 26, and the powder is filled into the storage tank 8, the powder is stored in the storage tank 8. It is not necessary to open the enclosed bag and fill the storage tank 8 with the powder, so that the powder is prevented from touching an operator or the like.
[0037]
(3) Check valve:
Since compressed air is injected into the storage tank 8 and the fixed-rate supply device 10 through the check valve 64, the inside of the storage tank 8 and the fixed-rate supply device 10 can be maintained in a pressurized state. Can be discharged more smoothly.
[0038]
(4) Flexible tubing connected to metering machine:
Since the chute 70 of the pipe member connected to the powder supply port 46 of the metering device 10 is formed of a synthetic resin such as flexible vinyl chloride, the pressurized rotation table 40 of the metering device 10 is measured. When the chamber 40a intermittently communicates with the powder supply port 46 by the rotation of the turntable 40, the powder under pressure is intermittently discharged to the chute 70, and the chute 70 expands and contracts by its action. Therefore, the powder is prevented from being clogged in the chute 70. It is not necessary to give an external impact to prevent blockage that occurs when a steel pipe or the like is used as the chute. If the chute 70 is made transparent, the state of the powder therein can be easily checked.
[0039]
(5) Dissolution means:
Furthermore, since the powder measured and discharged by the fixed-quantity feeder 10 is made to be dissolved water and transported through the dissolving cone 52 serving as a dissolving means, the powder is simply put into the transport pipe to which the flowing water is pressure-fed. It can be sent efficiently and effectively compared to sending to the destination.
[0040]
As described above, the present invention has been described in detail based on the embodiments. However, the present invention is not limited to the above-described embodiments. For example, as described below, various modifications or corrections can be made within the scope of the present invention. Can be done.
[0041]
(1) Installation position of fixed-quantity feeding machine:
In the present embodiment, the fixed-quantity feeder 10 is mounted outside the storage tank 8, but the fixed-quantity feeder 10 is disposed in the storage tank 8 so as to be driven, for example, on the same axis 9 as the stirring means 30. You may.
[0042]
(2) Check valve installation position:
In the present embodiment, the compressed air from the compressed air source 62 is supplied to the storage tank 8 and the plurality of injection nozzles 32, 48, the injection ports 33, 50, and the like of the fixed-quantity supply device 10 via a common check valve 64. However, depending on the size and shape of the storage tank 8, the fixed amount feeder 10, the stirring blade 30, the stirring blade 42, the type of powder to be handled, the supply interval of the compressed air, etc. A check valve may be provided at each of the injection nozzle and / or the injection port to prevent the powder from clogging.
[0043]
【The invention's effect】
According to the powder supply equipment configured according to the present invention, it is possible to prevent solidification due to compaction of the powder, to supply a required amount of powder when necessary, and to supply powder without touching an operator. A powder supply facility is provided that can be handled.
[Brief description of the drawings]
FIG. 1 is a side view showing a main part of a powder supply facility configured according to the present invention.
FIG. 2 is an enlarged side view showing a cross section of the container of FIG.
FIG. 3 is an enlarged side view showing a cross section of a part of the storage tank shown in FIG. 1;
FIG. 4 is a sectional view as seen in the direction of arrows AA in FIG. 3;
FIG. 5 is an enlarged side view showing a cross section of a part of the fixed quantity feeder shown in FIG. 1;
FIG. 6 is a sectional view as seen in the direction of arrows BB in FIG. 5;
FIG. 7 is an enlarged detailed view of a portion connected from the metering device of FIG. 1 to a transport line.
FIG. 8 is a diagram showing an example of an installation form of a powder supply facility configured according to the present invention in a case where a container is used as a container.
FIG. 9 is a view corresponding to FIG. 1, showing a case where a flexible container which is a flexible bag is used as a container.
[Explanation of symbols]
4: Discharge port 6: Container (container)
8: Storage tank 10: Fixed amount feeder 14: Container body 16: Cone (valve)
18: Cone rod (shaft member)
32: injection port 33: injection port 48: injection port 50: injection port 52: dissolving cone (dissolving means)
64: check valve 70: chute (pipe member)
80: Flexible container bag (container)

Claims (7)

A plurality of containers, each having a discharge port that can be opened and closed, containing the powder, a storage tank that connects the discharge ports to receive the powder in the container, and measures a predetermined amount of the powder in the storage tank. Equipped with a fixed-rate feeder that discharges to the destination,
A powder supply facility, wherein a required number of containers are sequentially connected to the storage tank in accordance with the amount of powder supplied to a supply destination. The container includes a container body provided with a discharge port at a lower end, a valve body provided at the discharge port and always closing the discharge port, and one end connected to the valve body and extending upward in the container body to form the other end. The powder supply equipment according to claim 1, further comprising: a shaft member that protrudes outward, and that grips the protruding end to open and close the valve body. The powder supply facility according to claim 1, wherein the container is formed of a flexible bag having a discharge port at a lower end. 4. The storage tank and the metering device according to claim 1, further comprising a plurality of injection ports for injecting compressed air into the storage tank, and each of the injection ports is supplied with compressed air through a check valve. A powder supply facility as described in Crab. The storage tank and the metering device are provided with a powder stirring means, and the stirring means is provided with a plurality of injection ports for injecting compressed air, and each of the injection ports is supplied with compressed air through a check valve. The powder supply equipment according to any one of claims 1 to 4. The powder supply equipment according to any one of claims 1 to 5, wherein a flexible pipe member is connected to the powder supply port of the fixed quantity supply device. The powder supply equipment according to any one of claims 1 to 6, wherein the powder discharged from the quantitative supply device is dissolved in water via a dissolving means, and is sent to a transport pipe connected to a supply destination.

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