JP6970398B1 - Granule supply device and granular material supply method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a granular material supply device and a granular material supply method capable of suppressing damage to a sieve net and effectively carrying out granulation. SOLUTION: This is a granule supply device 10 for supplying granules to a sieve device 5 that separates granules by a sieve net 7, and is a container 2a capable of accommodating the granules and a liquid, and a liquid in the container 2a. The liquid supply unit 15 is provided with a liquid supply unit 15 and a supply unit 11 provided in a granular material supply port 6a formed above the sieving net 7 and at a position facing the sieving net 7 in the sieving device 5. The unit 11 has a flow path 11h that communicates between the lower end and the upper end connected to the granular material supply port 6a of the sieving device 5, and the container 2a has an upper end opening 11a of the flow path 11h of the supply unit 11. It is formed in a size that can be inserted from, and a discharge port f for discharging a granular material together with a fluid is formed on the upper surface or the side surface. [Selection diagram] Fig. 1

Description

The present invention relates to a granular material supply device and a granular material supply method. More specifically, the present invention relates to a granular material supply device and a granular material supply method for supplying granular materials to a vibrating sieve device that separates granular materials having different particle sizes.

Machine parts such as oil-impregnated bearings are manufactured by impregnating a sintered metal obtained by sintering powder with lubricating oil. As a method for producing a metal powder used for such a sintered metal, a method for producing a metal powder using an atomizing device is used. For example, in the production of a metal powder using a water atomizing device, a metal material is melted and supplied to the water atomizing device. In the water atomizing device, high-pressure water is jetted and collided with a liquid consisting only of a metal in which a metal material is melted. Then, fine metal powder (atomize powder) is produced, and the produced metal powder is collected in a collection pot together with water.

Since the metal powders produced by the water atomizing device do not have the same particle size, granules having a small particle size (about several μm) and granules having a large particle size (about several mm) are mixed. When such metal powder is used for machine parts such as oil-impregnated bearings, it is necessary to supply metal powder having a certain particle size in order to improve the formability and workability of the machine parts. Therefore, the metal powder collected in the collection pot together with water is supplied to a vibrating sieve or the like and is separated according to the particle size.

As the vibrating sieve device used for sizing, for example, those described in Patent Documents 1, 2 and the like are used. This vibrating sieve device includes a sieve main body and a sieve net installed inside the sieve main body. The sieve main body is provided with a raw material supply port at the upper part of the sieve net, and granules are separated at the lower part of the sieve net. A material discharge port is provided. Further, a vibration applying means for vibrating the sieve main body is provided, and by operating the vibration applying means, the sieve net can be vibrated together with the sieve main body.

If the metal powder collected in the recovery pot is supplied to this vibrating sieve device from the raw material supply port, the metal powder having a particle size that passes through the sieve net is discharged from the sizing material discharge port and has a particle size that cannot pass through the sieve net. The metal powder is left on the sieve mesh. Therefore, the metal powder having a uniform particle size produced by the water atomizing device can be separated by the vibrating sieve device.

As the vibrating sieve device used for sizing, for example, those described in Patent Documents 1, 2 and the like are used. This vibrating sieve device includes a sieve main body and a sieve net installed inside the sieve main body. The sieve main body is provided with a raw material supply port at the upper part of the sieve net, and granules are separated at the lower part of the sieve net. A material discharge port is provided. Further, a vibration applying means for vibrating the sieve main body is provided, and by operating the vibration applying means, the sieve net can be vibrated together with the sieve main body.

If the metal powder collected in the recovery pot is supplied to this vibrating sieve device from the raw material supply port, the metal powder having a particle size that passes through the sieve net is discharged from the sizing material discharge port and has a particle size that cannot pass through the sieve net. The metal powder is left on the sieve mesh. Therefore, the metal powder having a uniform particle size produced by the water atomizing device can be separated by the vibrating sieve device.

Jikkai Sho 52-137371 Japanese Patent No. 2731515

The metal powder supplied from the raw material supply port of the vibrating sieve device falls on the sieving net, but usually, the raw material supply port is arranged so that the metal powder falls near the center of the sieving net. Then, the metal powder accumulates near the center of the sieve net, and the efficiency of granulation deteriorates.

Further, since the metal powder falls near the center of the sieve net, the vicinity of the center of the sieve net is easily damaged by the impact or wear caused by the fall of the metal powder. On the other hand, the peripheral part of the sieve net is not so damaged because the metal powder only moves from the vicinity of the center due to the vibration. Then, even if the peripheral part of the sieve net can be used, it must be replaced due to damage near the center, so that the entire sieve net cannot be effectively used.

In view of the above circumstances, it is an object of the present invention to provide a granular material supply device and a granular material supply method capable of suppressing damage to the sieve net and effectively carrying out granulation.

<Granular material supply device>
The granular material supply device of the first invention is a granular material supply device that supplies the granular material to the sieve device that separates the granular material by a sieve net, and is a container capable of containing the granular material and a liquid, and the container. to a liquid supply portion for supplying liquid is provided with a supply portion disposed above and sieve network and the facing formed granulate feed opening at the position of the sieve screen in the sieve device, the supply unit Is formed so as to communicate between the lower end and the upper end, allow a liquid containing granules to flow along the inner surface, and be connected to the granular material supply port so that the liquid scatters around when the liquid separates from the inner surface. has a flow path having a discharge opening with said container, can be inserted into the upper end opening of the channel of the supply unit is formed in a size that can not pass through the discharge opening, the upper end, granules An opening having a size to overflow the liquid is formed as a discharge port, or when a high-pressure liquid is supplied from the liquid supply unit to the side surface, the liquid can be ejected together with the granules. It is characterized in that a plurality of outlets are formed.
In the first invention, the flow path of the supply portion of the granular material supply device of the second invention has a discharge opening connected to the granular material supply port at the lower end, and an opening area larger than the discharge opening at the upper end. Has a large supply opening, and the container is formed in a size that can be inserted into the flow path of the supply unit from the supply opening but cannot pass through the discharge opening.
In the second invention, the granular material supply device of the third invention includes a funnel-shaped portion formed so that the cross-sectional area of the flow path increases from the discharge opening to the supply opening. It is characterized by being.
The granular material supply device of the fourth invention is a granular material supply device that supplies the granular material to the sieve device that separates the granular material by a sieve net, and is a container capable of accommodating the granular material and the liquid, and the container. It is provided with a liquid supply unit for supplying a liquid to the sieving device and a supply unit provided in a granular material supply port formed above the sieving net and at a position facing the sieving net in the sieving device. Has a flow path that communicates between the lower end and the upper end and has a discharge opening connected to the granular material supply port, and the container is large enough to be inserted into the upper end opening of the flow path of the supply portion. An opening is formed at the upper end of the container, which allows the overflowing liquid to overflow together with the granules and flows downward through the side surface of the container, or is formed on the side surface. When a high-pressure liquid is supplied from the liquid supply unit, a plurality of discharge ports having a size capable of ejecting the liquid together with the granules are formed.
In the first, second, third or fourth invention , the granular material supply device of the fifth invention is the one in which the granular body is formed by the water atomizing device, and the container is located below the water atomizing device. It is arranged so as to collect the granules formed by the water atomizing device, and is characterized in that the discharge port is formed at the upper end of the container.
<Grade supply method>
The method for supplying a granular material according to a sixth invention is a granular material supply device that supplies the granular material to a sieving device that separates the granular material by a sieving net, and is above the sieving net in the sieving device and with the sieving net. The discharge opening is communicated with the granular material supply port formed at the opposite position, the liquid containing the granular material flows along the inner surface, and the liquid is formed to scatter to the surroundings when the liquid separates from the inner surface. A container having a flow path having a discharge opening, which is formed in a size that can be inserted into the flow path at the upper end of the flow path of the supply unit but cannot pass through the discharge opening, and is granular at the upper end. A container containing a granular material having an opening having a size that allows the liquid to overflow together with the body as a discharge port, or when a high-pressure liquid is supplied from the liquid supply unit to the side surface, the liquid is ejected together with the granular material. A container containing a granular material having a plurality of discharge ports having a size capable of being formed is arranged, a liquid is supplied to the container, and the granular material together with the liquid is supplied from the discharge port formed on the side surface or the upper end of the container. It is characterized by discharging.
Granulate supply method of the seventh invention, in the sixth invention, the flow path, the supply has a discharge opening which is connected with the particulate material feeding port at the lower end, the opening area than the discharge opening in the upper end larger The container has an opening, and is characterized in that the container is formed in a size that can be inserted from the supply opening into the flow path of the supply portion and cannot pass through the discharge opening.
In the seventh invention , the granular material supply method of the eighth invention includes a funnel-shaped portion formed so that the cross-sectional area of the flow path increases from the discharge opening to the supply opening. It is characterized by being.
The method for supplying a granular material according to a ninth invention is a granular material supply device that supplies the granular material to a sieve device that separates the granular material by a sieve net, and is above the sieve net in the sieve net and with the sieve net. It has a flow path having a discharge opening communicated with a granular material supply port formed at an opposite position, and the liquid overflows with the granular material in the flow path, and the overflowing liquid flows downward along the side surface. A container containing granules having an outlet formed at the upper end, or a plurality of outlets having a size capable of ejecting the liquid together with the granules when a high-pressure liquid is supplied from the liquid supply unit to the side surface. It is characterized in that a container containing the granules in which the particles are formed is arranged, a liquid is supplied to the container, and the granules are discharged together with the liquid from a discharge port formed on the side surface or the upper end of the container.
It is characterized by that.
In the sixth, seventh, eighth or ninth aspect of the invention , the granular material supply method of the tenth invention is such that the granular material is formed by a water atomizing device, and the container is placed below the water atomizing device. It is arranged so as to collect the granules formed by the water atomizing device, and is characterized in that the discharge port is formed at the upper end of the container.

<Granular material supply device>
According to the first invention, if the granular material is stirred in the container by the liquid supplied from the liquid supply unit and then the granular material is discharged from the discharge port of the container together with the liquid, the granular material is discharged from the granular material supply port together with the liquid. It can be supplied to the sieving net of the sieving device. Moreover, since the liquid containing the granules discharged from the discharge port formed on the side surface or the upper end of the container flows along the inner surface of the flow path and is discharged into the sieving device from the discharge opening, it can be used in a wide area of the sieving net. Granules can be supplied. Then, since it is possible to prevent only the damage of a specific part of the sieve net from progressing, the life of the sieve net can be extended. In addition, the efficiency of separating the granules can be improved as compared with the case where the granules are solidified to some extent and supplied onto the sieve net.
According to the second and third inventions, the fluid and the granules discharged from the side surface or the upper end of the container flow through the inner surface of the flow path and flow into the sieving device. Since the fluid falls so as to scatter when the liquid separates from the lower end of the flow path, the granules can be supplied to a wide area of the sieve net.
According to the fourth invention, if the granular material is stirred in the container by the liquid supplied from the liquid supply unit and then the granular material is discharged from the discharge port of the container together with the liquid, the granular material is discharged from the granular material supply port together with the liquid. It can be supplied to the sieving net of the sieving device. Moreover, the granules are discharged together with the liquid from the discharge port formed on the side surface of the container, and the granules are supplied into the sieving device together with the liquid, or the liquid containing the granules overflowed from the discharge port at the upper end of the container. Since the liquid is fed along the side surface of the container and supplied into the sieving device from the lower end of the container, the granules can be supplied to a wide area of the sieving net. Then, since it is possible to prevent only the damage of a specific part of the sieve net from progressing, the life of the sieve net can be extended. In addition, the efficiency of separating the granules can be improved as compared with the case where the granules are solidified to some extent and supplied onto the sieve net.
According to the fifth invention , the granules formed by the water atomizing device can be easily separated.
<Grade supply method>
According to the sixth invention , if the granular material is stirred in the container by the liquid supplied from the liquid supply unit and then the granular material is discharged from the discharge port of the container together with the liquid, the granular material is discharged from the granular material supply port together with the liquid. It can be supplied to the sieving net of the sieving device. Moreover, since the liquid containing the granules discharged from the discharge port formed on the side surface or the upper end of the container flows along the inner surface of the flow path and is discharged into the sieving device from the discharge opening, it can be used in a wide area of the sieving net. Granules can be supplied. Then, since it is possible to prevent only the damage of a specific part of the sieve net from progressing, the life of the sieve net can be extended. In addition, the efficiency of separating the granules can be improved as compared with the case where the granules are solidified to some extent and supplied onto the sieve net.
According to the seventh and eighth inventions , the fluid and the granules discharged from the side surface or the upper end of the container flow through the inner surface of the flow path and flow into the sieving device. Since the fluid falls so as to scatter when the liquid separates from the lower end of the flow path, the granules can be supplied to a wide area of the sieve net.
According to the ninth invention, if the granular material is stirred in the container by the liquid supplied from the liquid supply unit and then the granular material is discharged from the discharge port of the container together with the liquid, the granular material is discharged from the granular material supply port together with the liquid. It can be supplied to the sieving net of the sieving device. Moreover, the granules are discharged together with the liquid from the discharge port formed on the side surface of the container, and the granules are supplied into the sieving device together with the liquid, or the liquid containing the granules overflowed from the discharge port at the upper end of the container. Since the liquid is fed along the side surface of the container and supplied into the sieving device from the lower end of the container, the granules can be supplied to a wide area of the sieving net. Then, since it is possible to prevent only the damage of a specific part of the sieve net from progressing, the life of the sieve net can be extended. In addition, the efficiency of separating the granules can be improved as compared with the case where the granules are solidified to some extent and supplied onto the sieve net.
According to the tenth invention , the granules formed by the water atomizing device can be easily separated.

It is a schematic explanatory drawing of the equipment 1 which adopted the granular material supply device 10 of this embodiment. It is explanatory drawing of the state in which the slurry S is supplied to the supply part 11 by the container 2a. It is explanatory drawing of the state which the slurry S is supplied to the supply part 11 by a container 20. It is the schematic explanatory drawing of the equipment 1 which adopted the granular material supply device 10 of another embodiment.

The granular material supply device of the present embodiment is a device that supplies the granular material to the sieve net of the sieve net, and is characterized in that damage to the sieve net can be suppressed.

The granules supplied to the sieving device by the granule supply device of the present embodiment are not particularly limited. For example, metal powders such as alloys such as copper and tin produced by the water atomizing method, powders made of materials such as ceramics and resins, and the like can be mentioned.
Further, the particle size of the granular material is not particularly limited. For example, those having a particle size of about several tens of μm to several hundreds of μm can be mentioned.

The equipment to which the granular material supply device of the present embodiment is adopted is not particularly limited. For example, in equipment such as a hopper or the like in which granules such as metal powder are stored, the granules can be used as a device for supplying the granules to a sieving device for separating the granules.

Hereinafter, a case where the metal powder produced by the water atomizing method is supplied to the sieving apparatus as a slurry mixed with water will be described as a representative.

<Equipment 1 provided with the granular material supply device 10>
Hereinafter, the equipment 1 provided with the granular material supply device 10 of the present embodiment will be described.

<Water atomizing device 2>
In FIG. 1, reference numeral 2 indicates a water atomizing device in equipment 1. The water atomizing device 2 produces fine metal powder by injecting and colliding high-pressure water with the molten metal. The metal powder m generated by the water atomizing device 2 is dropped into a container 2a installed below the water atomizing device 2 and collected. The container 2a is removable from the main body of the water atomizing device 2, and when removed, it has a shape of a bottomed cylindrical container having an opening at the upper end. When the container 2a is removed from the main body of the water atomizing device 2, the container 2a can be transported by a method such as suspending the collected metal powder m while accommodating the collected metal powder m in the container 2a (see arrow A in FIG. 1). ).
The container 2a corresponds to the container of the granular material supply device 10 in the claims.

<Vibration sieve device 5>
The equipment 1 includes a vibrating sieve device 5 that separates the metal powder m produced by the water atomizing device 2. The vibrating sieve device 5 includes a main body portion 6 having a hollow space 6h. The main body 6 has a hollow space 6h, and a sieve net 7 is provided in the hollow space 6h so as to vertically divide the hollow space 6h (see FIGS. 2 and 3). .. The main body 6 is provided with a granular material supply port 6a that communicates between the hollow space 6h and the outside so as to be located above the central portion of the sieve net 7. Further, on the side surface of the main body 6 above the sieve net 7, a first discharge port 6c for discharging the metal powder m on the sieve net 7 to the outside is provided. On the other hand, at the lower end of the main body 6, that is, the portion of the main body 6 below the sieve net 7, a second discharge port 6b for discharging the metal powder m and water that have passed through the sieve net 7 to the outside is provided. It is provided. Although not shown, the vibrating sieve device 5 includes a vibration generating portion that applies vibration to the main body portion 6.

<Granular material supply device 10>
As shown in FIG. 1, the equipment 1 is provided with a granular material supply device 10 that supplies the metal powder m recovered in the container 2a to the vibrating sieve device 5. The granular material supply device 10 includes a container 2a, a supply unit 11, and a liquid supply unit 15.

<Supply unit 11>
As shown in FIGS. 2 and 3, the granular material supply port 6a of the vibrating sieve device 5 is provided with a supply unit 11 of the granular material supply device 10 of the present embodiment. The supply unit 11 is provided with a flow path 11h that communicates between the upper end supply opening 11a and the lower end and the discharge opening 11b, and the discharge opening 11b is connected to the granular material supply port 6a of the vibrating sieve device 5. Has been done.

The supply portion 11 has a funnel-shaped portion 12 formed so that the cross section of the flow path 11h becomes wider toward the upper end, and a connecting portion located between the lower end of the funnel-shaped portion 12 and the discharge opening 11b. 13 and. The connecting portion 13 does not necessarily have to be provided, and the flow path 11h may be formed so that the cross section is continuously widened from the discharge opening 11b to the supply opening 11a. That is, the entire supply unit 11 may be a funnel-shaped portion 12.

The flow path 11h of the supply unit 11 is formed so that the opening cross section of the supply opening 11a is large enough to allow the container 2a to be inserted, and the opening cross section of the discharge opening 11b is large enough to prevent the container 2a from passing through. In other words, the container 2a can be inserted from the supply opening 11a to the flow path 11h of the funnel-shaped portion 12, but cannot pass through the discharge opening 11b, that is, a size that cannot be inserted into the flow path 11h of the connecting portion 13. It is formed. For example, it is assumed that the cross section of the flow path 11h of the supply unit 11 is circular and the container 2a is cylindrical. Then, the diameter of the bottom surface of the container 2a is formed to be smaller than the diameter of the supply opening 11a and larger than the diameter of the discharge opening 11b (the diameter of the flow path 11h of the connecting portion 13). That is, the supply opening 11a is formed so that the opening area is larger than the area of the bottom surface of the container 2a, and the discharge opening 11b is formed so that the opening area is smaller than the area of the bottom surface of the container 2a.

<Liquid supply unit 15>
The liquid supply unit 15 supplies water to the container 2a. Specifically, water is supplied into the container 2a with the container 2a inserted into the flow path 11h of the supply unit 11. The liquid supply unit 15 includes a fluid supply device 16 capable of discharging water at a certain flow velocity, and a pipe 15p for supplying the water discharged by the fluid supply device 16 to the container 2a (see FIG. 1). When one end of the pipe 15p of the liquid supply unit 15 is put into the container 2a and water is supplied from the fluid supply device 16 into the container 2a, the metal powder m of the container 2a is stirred and the metal powder m and the water are mixed. The slurry S can be formed in the container 2a. Moreover, if water is continuously supplied, the slurry S can be overflowed from the opening at the upper end of the container 2a (hereinafter referred to as the discharge port 2f), and the slurry S can be discharged from the container 2a (FIG. 2B). reference). In other words, the slurry S can be supplied to the flow path 11h of the supply unit 11.

<Recovery of metal powder m in equipment 1>
Since the equipment 1 has the above-mentioned configuration, the metal powder m in the container 2a manufactured by the water atomizing device 2 can be separated and recovered by performing the following.

First, if the molten metal of the water atomizing device 2 is supplied to form the metal powder m, the metal powder m and the water are accumulated in the container 2a. Then, when a certain amount or more of the metal powder m is accumulated in the container 2a, the operation of the water atomizing device 2 is stopped. Then, the water accumulated in the container 2a is drained so that only the metal powder m is stored in the container 2a.

When only the metal powder m is stored in the container 2a, the container 2a is removed from the main body of the water atomizing device 2 and moved to the position of the vibrating sieve device 5 by a method such as hanging. Then, the container 2a is inserted into the flow path 11h of the funnel-shaped portion 12 through the supply opening 11a of the supply portion 11 connected to the granular material supply port 6a of the vibrating sieve device 5. Then, the container 2a is held at a position where the container 2a does not come into contact with the inner surface of the flow path 11h of the funnel-shaped portion 12 (see FIG. 2B).
The container 2a does not necessarily have to be inserted into the flow path 11h of the funnel-shaped portion 12, and the container 2a may be arranged above the flow path 11h of the funnel-shaped portion 12 (see FIG. 2A). ..

After that, one end of the pipe 15p is arranged in the container 2a, and water is supplied into the container 2a from the fluid supply device 16. Then, the metal powder m in the container 2a is agitated by the supplied water, and a slurry S in which the metal powder m and the water are mixed is formed in the container 2a. At this time, as the water supplied to the container 2a, the water used in the water atomizing device 2 (supernatant water) may be used, or industrial water may be used.

If water is further supplied from the fluid supply device 16 into the container 2a from the state in which the slurry S is formed in the container 2a, the slurry S in the container 2a eventually overflows from the discharge port 2f of the container 2a and becomes the container 2a. It flows downward along the side surface and falls downward from the lower end of the container 2a. Then, since the container 2a is inserted into the flow path 11h of the supply section 11, the slurry S is supplied into the flow path 11h of the funnel-shaped portion 12 of the supply section 11 (FIG. 2B). ..

Here, the flow path 11h of the funnel-shaped portion 12 is formed so that the cross section becomes wider toward the upper side. In other words, the flow path 11h of the funnel-shaped portion 12 is formed so that the cross section becomes narrower as it approaches the connecting portion 13. Moreover, at the connecting portion between the flow path 11h of the funnel-shaped portion 12 and the flow path 11h of the connecting portion 13, the cross-sectional area of the flow path 11h is the same as that of the discharge opening 11b. Since the opening area of the discharge opening 11b is smaller than the area of the bottom surface of the container 2a, the slurry S supplied from the container 2a into the flow path 11h of the funnel-shaped portion 12 is placed on the inner surface of the flow path 11h of the funnel-shaped portion 12. It will fall and flow downward along its inner surface (FIG. 2B).

Then, the slurry S that has flowed downward along the inner surface of the flow path 11h of the funnel-shaped portion 12 flows into the connecting portion 13 and further flows downward along the inner surface of the flow path 11h of the connecting portion 13. Eventually, when the slurry S reaches the granular material supply port 6a of the main body 6 of the vibrating sieve device 5, the slurry S separates from the inner surface of the flow path 11h of the connecting portion 13 and falls into the sieve net 7. When the slurry S is separated from the inner surface of the flow path 11h of the connecting portion 13, the slurry S is scattered around to some extent, so that the slurry S falls into a relatively wide region of the sieve net 7. Therefore, the metal powder m contained in the slurry S is also supplied to a relatively wide area of the sieve mesh 7 (FIG. 2B).

Then, among the metal powders m contained in the slurry S, the metal powder m larger than the mesh size of the sieve mesh 7 remains on the sieve mesh 7, and the metal powder m smaller than the mesh size of the sieve mesh 7 remains together with the water mesh. It passes through 7 and is discharged to the outside from the second discharge port 6b.

Further, if the vibration generating portion applies vibration to the main body portion 6 of the vibration sieving device 5, the metal powder m on the sieving net 7 can be moved along the sieving net 7, so that the metal powder on the sieving net 7 can be moved. m can be discharged to the outside from the first discharge port 6c.

As described above, according to the granular material supply device 10 of the present embodiment, the metal powder m in the slurry S supplied from the granular material supply port 6a of the main body 6 is not limited to the region below the supply unit 11. , Can be dropped over a wide range of the sieve net 7. Then, since it is possible to prevent only the damage in the central portion of the sieve net 7 from progressing, the life of the sieve net 7 can be extended.

Moreover, the metal powder m in the slurry S can be supplied onto the sieve mesh 7 so as to be evenly distributed to some extent. Then, as compared with the case where the metal powder m is solidified to some extent and deposited on the sieve net 7, the metal powder m that passes through the mesh of the sieve net 7 among the metal powder m is quickly passed through the sieve net 7. be able to. Therefore, the efficiency of separating the metal powder m can be improved.

<About supply unit 11>
In the above example, the case where the cross section of the flow path 11h of the supply unit 11 is formed so as to become wider toward the upper end has been described. However, in the flow path 11h of the supply unit 11, if the opening area of the supply opening 11a is wider than the opening area of the discharge opening 11b and the discharge opening 11b is formed to a size that the container 2a cannot pass through. The same effect as the above example can be obtained. That is, as shown in FIG. 3A, the supply section 11 has the same cross-sectional area as the supply opening 11a (large diameter portion 11A) and the flow path 11h has the same cross-sectional area as the discharge opening 11b. It may have a portion and (small diameter portion 11B). Even in this case, the slurry S discharged from the container 2 is supplied to the large-diameter portion 11A, then flows along the inner surface of the small-diameter portion 11B, and flows into the main body portion 6 of the vibrating sieve device 5. Therefore, also in this case, the metal powder m can be supplied to a wide area of the sieve net 7 as in the case where the cross section of the flow path 11h of the supply unit 11 is formed so as to become wider toward the upper end. ..

Further, as shown in FIG. 4A, a portion (funnel-shaped portion 6d) whose cross section becomes wider toward the upper side may be provided at the upper end portion of the main body portion 6 of the vibrating sieve device 5. In this case, the funnel-shaped portion 6d can function as the supply portion 11 of the granular material supply device 10. That is, the funnel-shaped portion 6d can be used as the supply portion 11 of the granular material supply device 10.

<About container 2a>
In the above example, the upper end opening of the container 2a provided in the water atomizing device 2 is used as the discharge port 2f (see FIG. 2B), and the slurry S overflowing from the discharge port 2f is supplied to the flow path 11h of the supply unit 11. Explained.
As another example, a lid may be provided in the upper opening of the container 2a, a through hole may be provided in the lid, and the through hole may be used as a discharge port.

Further, the container may be a container provided separately from the container 2a provided in the water atomizing device 2.

For example, as shown in FIG. 3B, a container 20 having a discharge port 20f on the side surface is prepared, and the metal powder m is transferred from the container 2a to this container 20. Then, if the container 20 is arranged in the flow path 11h of the supply unit 11 and water is supplied into the container 20 from the liquid supply unit 15, the metal powder m in the container 20 can be agitated to form the slurry S. Since the slurry S can be discharged from the discharge port 20f provided on the side surface of the container 20, the slurry S can be supplied to the vibrating sieve device 5 as in the case of using the container 2a, and the metal powder can be spread over a wide area of the sieve net 7. m can be supplied. When the discharge port 20f is provided on the side surface, the slurry S can be ejected from the discharge port 20f by supplying water from the liquid supply unit 15 at a high pressure. Then, since the slurry S can be scattered to a position away from the container 20, the area where the metal powder m can be supplied can be made wider (FIG. 3 (B)).

Even when a container 20 different from the container 2a is used, the slurry S is discharged from the upper end opening of the container 20 or the discharge port formed in the lid provided on the container 20 without providing the discharge port 20f on the side surface. You may do so.

Further, a side discharge port for discharging the slurry S may be provided on the side surface of the container 2a provided in the water atomizing device 2. In this case, the slurry S may be discharged from the side discharge port together with the upper opening of the container 2a and the discharge port of the lid. In this case, it is necessary to provide the container 2a with a mechanism that can open and close the side discharge port so that the side discharge port is closed while the metal powder m is being collected from the water atomizing device 2.

Furthermore, although Keru set the lid on the upper opening of the container 2a, without providing an outlet for the lid may be only from side discharge port formed in a side of the container 2a to discharge the slurry S.

Further, a container 25 having a structure as shown in FIG. 4B may be prepared, and the metal powder m may be transferred from the container 2a into the container body 26 of the container 25. The container 25 has a container body 26 having an open upper end and a conical cover 27 at the upper portion of the container body 26 whose cross-sectional area increases downward. In the container 25, a gap 25s is provided between the upper end of the container body 26 and the inner surface 27a of the cover 27 so that the slurry S can flow out. The cover 27 is provided with a hole 27h penetrating the cover 27 so that the pipe 15p of the liquid supply unit 15 is connected to the hole 27h. In the case of the container 25 having such a structure, if water is supplied to the container body 26 from the pipe 15p of the liquid supply unit 15 through the hole 27h of the cover 27, the slurry S can be overflowed from the gap 25s. Moreover, even if the flow velocity of the water supplied from the pipe 15p of the liquid supply unit 15 is high, the cover 27 can prevent the slurry S from scattering to the surroundings. That is, it is possible to prevent the slurry S from scattering to the surroundings while enhancing the effect of stirring the inside of the container body 26 by supplying water having a high flow velocity into the container body 26.

A cover having the same structure as the cover 27 may be provided at the tip of the pipe 15p of the liquid supply unit 15. In this case, the cover 27 of the pipe 15p is arranged so as to cover the upper end of the container 2a, and a gap is formed between the upper end of the container 2a and the inner surface of the cover (see FIG. 4B). .. Then, even when the container 2a is used as it is, the same effect as when the above-mentioned container 25 is used can be obtained.

The granular material supply device of the present invention is suitable as a device for supplying metal powder such as copper and tin to a vibrating sieve device and the like.

1 Equipment 2 Water atomizing device 2a Container 2f Discharge port 5 Sieve net 6 Main body 6a Raw material supply port 6b Second discharge port 6c First discharge port 6h Hollow space 7 Sieve net 10 Granule supply device 11 Supply section 11h Channel 11a Supply opening 11b Discharge opening 15 Fluid supply unit 20 Container 20f Discharge port m Metal powder

Claims (10)

It is a granule supply device that supplies granules to a sieve device that separates granules by a sieve net.
A container that can hold granules and liquids,
A liquid supply unit that supplies liquid to the container,
It is provided with a supply unit provided in a granular material supply port formed above the sieve net in the sieve device and at a position facing the sieve net.
The supply unit
A discharge formed so as to communicate between the lower end and the upper end, allow a liquid containing a granular material to flow along the inner surface, and be connected to the granular material supply port so that the liquid scatters around when the liquid separates from the inner surface. It has a flow path with an opening and
The container is
Can be inserted into the upper end opening of the channel of the supply unit is formed in a size that can not pass through the discharge opening,
An opening having a size that allows the liquid to overflow together with the granules is formed at the upper end as an outlet.
or,
When a high-pressure liquid is supplied from the liquid supply unit, a plurality of discharge ports having a size capable of ejecting the liquid together with the granules are formed on the side surface of the granule supply. Device. The flow path of the supply section is
It has a discharge opening connected to the granular material supply port at the lower end.
It has a supply opening at the upper end, which has a larger opening area than the discharge opening.
The container is
The granular material supply device according to claim 1, wherein the granular material supply device is formed in a size that can be inserted into the flow path of the supply unit from the supply opening but cannot pass through the discharge opening. The supply unit
The granular material supply device according to claim 2, further comprising a funnel-shaped portion formed so that the cross-sectional area of the flow path increases from the discharge opening toward the supply opening. It is a granule supply device that supplies granules to a sieve device that separates granules by a sieve net.
A container that can hold granules and liquids,
A liquid supply unit that supplies liquid to the container,
It is provided with a supply unit provided in a granular material supply port formed above the sieve net in the sieve device and at a position facing the sieve net.
The supply unit
It has a flow path that communicates between the lower end and the upper end and has a discharge opening connected to the granular material supply port.
The container is
It is formed in a size that can be inserted into the upper end opening of the flow path of the supply section.
An opening is formed at the upper end as a discharge port, which allows the overflowing liquid to overflow together with the granules and allows the overflowing liquid to flow downward along the side surface of the container.
or,
When a high-pressure liquid is supplied from the liquid supply unit, a plurality of discharge ports having a size capable of ejecting the liquid together with the granules are formed on the side surface.
A granular material supply device characterized by that. The granules were formed by a water atomizing device.
The container
It is arranged below the water atomizing device and is arranged so as to collect the granules formed by the water atomizing device.
The granular material supply device according to claim 1, 2, 3 or 4 , wherein the discharge port is formed at the upper end of the container. It is a granule supply device that supplies granules to a sieve device that separates granules by a sieve net.
A discharge opening is communicated with a granular material supply port formed above the sieving net and at a position facing the sieving net in the sieving device , a liquid containing the granular material is flowed along the inner surface, and the liquid is separated from the inner surface. It has a flow path having the discharge opening formed so that the liquid is scattered around.
The flow path is a container formed in a size that can be inserted into the upper end opening of the flow path of the supply unit but cannot pass through the discharge opening, and has an opening at the upper end having a size that allows the liquid to overflow together with the granules. A container containing the granules formed as a discharge port, or a plurality of discharge ports having a size capable of ejecting the liquid together with the granules when a high-pressure liquid is supplied from the liquid supply unit are formed on the side surface thereof. the container containing the granules are being arranged,
A method for supplying a granular material, which comprises supplying a liquid to the container and discharging the granular material together with the liquid from a discharge port formed on the side surface or the upper end of the container. The flow path is
It has a discharge opening connected to the granular material supply port at the lower end.
It has a supply opening at the upper end, which has a larger opening area than the discharge opening.
The container is
The granular material supply method according to claim 6, wherein the granular material supply method is formed in a size that can be inserted into the flow path of the supply unit from the supply opening and cannot pass through the discharge opening. The supply unit
The granular material supply method according to claim 7, further comprising a funnel-shaped portion formed so that the cross-sectional area of the flow path increases from the discharge opening toward the supply opening. It is a granule supply device that supplies granules to a sieve device that separates granules by a sieve net.
It has a flow path having a discharge opening communicated with a granular material supply port formed above the sieving net in the sieving device and at a position facing the sieving net.
A container containing a granular material having a discharge port formed at the upper end of the flow path, which overflows the liquid together with the granular material and causes the overflowing liquid to flow downward along the side surface, or a high pressure from the liquid supply unit on the side surface. When the liquid is supplied, a container containing the granules having multiple outlets having a size capable of ejecting the liquid together with the granules is arranged.
A liquid is supplied to the container, and the granules are discharged together with the liquid from a discharge port formed on the side surface or the upper end of the container.
A granular material supply method characterized by that. The granules were formed by a water atomizing device.
The container
It is arranged below the water atomizing device and is arranged so as to collect the granules formed by the water atomizing device.
The granular material supply method according to claim 6, 7, 8 or 9 , wherein the discharge port is formed at the upper end of the container.

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