JP2024006735A - Powder supply addition device and powder supply addition method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder supply addition device which hardly causes breakage or block on a supply member such as a hose, when powder is supplied to an added object after transferring the powder from a container storing the powder to an addition device, prevents efficiently scattering of powder in supplying and adding the powder, and achieves free selection of an installation place of the device.

SOLUTION: A powder supply addition device comprises: a container storing powder; an addition device for adding the powder to an added object; and a powder supply member for connecting the container and the addition device. Suction means is connected to the powder supply member, and the powder is supplied to the addition device through the powder supply member after sucked from the container by the suction means. The addition device has powder addition means which can add the powder to the added object continuously and without pressure.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a powder supply/addition device and a powder supply/addition method using the powder supply/addition device.

When adding powdered products to the additive equipment (belt conveyor, hopper, etc.) that is being transported, conventionally the product is transferred using a pump (Mono pump), pneumatic transport, bucket conveyor, disc conveyor, etc.
However, with methods of transporting powder using pumps or air pressure, the high-velocity powder during powder transport can cause wear on the inner surface of the hose (in severe cases, the hose may be damaged), and the powder can be scattered from the damaged part of the hose. This can sometimes make it difficult to add the appropriate powder product to the addition equipment. Furthermore, since bucket conveyors are large devices, it is often difficult to secure installation space, and disk conveyors have the problem of not being suitable for transporting powder to high locations.

To address this problem, for example, Patent Document 1 discloses a technique for preventing the scattering of the additive powder by supplying a fixed amount of the additive powder through a screw feeder penetrated into the base material powder.
However, in the method described in Patent Document 1, the base material powder is added intermittently and cannot be added continuously, and a means for transporting the base material powder from the intermediate storage section to the hopper is not disclosed. do not have.
Further, for example, Patent Document 2 discloses that there are two methods for airflow transport of powder to a high place (or a remote place): one using pressure feeding and the other using vacuum suction.
However, the technique disclosed in Patent Document 2 does not specifically disclose means for adding powder to a belt conveyor, hopper, etc., and does not specifically disclose the effect of transporting powder by vacuum suction. Nothing has been disclosed.

Further, for example, a method of transporting a powder product using a Mono pump, a method of transporting a powder product using a conveyor, etc. have been studied in the past.
However, with the method of using a Mono pump, the powder product cannot be transferred to a high position, so there are many restrictions on where the addition device can be installed. There was also the problem that it remained and was likely to cause blockage.
Furthermore, in the method of using a conveyor, it is difficult to transport the powder product to a high position, and the equipment becomes large, which increases the number of restrictions on where the addition device can be installed.

Japanese Patent Application Publication No. 09-253475 Japanese Unexamined Patent Publication No. 54-27185

Therefore, the present invention aims to prevent damage or blockage of supply members such as hoses when the powder is transported from a storage container etc. to an addition device and supplied to the additive, and to prevent the powder from being damaged or clogged during supply and addition. It is an object of the present invention to provide a powder supply/addition device which can effectively prevent powder scattering and which allows freedom in selecting the installation location of the device, and a powder supply/addition method using the powder supply/addition device. do.

As a result of extensive research in order to solve the above problems, the present inventors have discovered that a suction means is used to supply the powder from the container that stores the powder to the addition device that supplies the powder to the object to be supplied. By adding powder continuously and without pressure from the addition device to the object to be supplied, it is possible to prevent damage to supply members such as hoses, and to effectively prevent powder scattering during supply and addition. Furthermore, the inventors discovered that the installation location of the device can be freely selected, leading to the completion of the present invention.

(1) The present invention provides a powder storage system that includes a container for storing powder, an addition device for adding the powder to an object to be added, and a powder transportation member that connects the container and the addition device. A supply and addition device, wherein a suction means is connected to the powder transport member, and the powder is sucked from the container by the suction means and supplied to the addition device through the powder transport member. , the above-mentioned addition device is a powder supply/addition device characterized in that it is equipped with a powder addition means that can continuously and pressurelessly add the above-mentioned powder to the above-mentioned object to be added.
(2) Further, the present invention preferably provides the powder supply device according to (1), which further includes a control section that controls the addition rate of the powder supply means according to the supply amount of the powder.
(3) Moreover, it is preferable that the said addition apparatus is a powder supply apparatus as described in (1) or (2) arrange|positioned above the said supply target object.
(4) The present invention also provides a powder supply/addition method using the powder supply/addition device according to any one of (1) to (3).
The present invention will be explained in detail below.

FIG. 1 is a schematic diagram showing an example of a powder supply/addition device according to the present invention.
As shown in FIG. 1, a powder supply/addition device 10 of the present invention includes a container 1 for storing powder 6, an addition device 3 for adding powder 6 to an addition target 5, and a container 1. and a powder transport member 2 that connects the and the addition device 3.

In the powder supply/addition device 10 according to the present invention, a suction means 4 is connected to the powder transport member 2, and the powder 6 is sucked from the container 1 by the suction means 4 and passed through the powder transport member 2. It is supplied to the addition device 3.
Since the powder 6 is supplied from the container 1 to the addition device 3 by suction, the fine powder is less likely to fly and adversely affect peripheral equipment.

The suction means 4 is not particularly limited, and includes, for example, a vacuum pump, a vacuum conveyance device, a suction type pneumatic conveyance device, a vacuum conveyor, a suction conveyance system, and the like.
Further, the conditions for suctioning the powder 6 by the suction means 4 are appropriately determined by taking into consideration the type of the powder 6, the distance between the container 1 and the addition device 3, the material and durability of the powder transport member 2, etc. .

The container 1 can be a conventionally known container such as a container that can store the powder 6 therein, but it can suppress the scattering of the powder 6 stored inside when it is discharged, and can also be used as a powder transportation member 2 to be described later. It is preferable to include a member that can be connected.
For example, as shown in FIG. 1, the container 1 has a funnel-shaped bottom, and a discharge port for the powder 6 is provided at the apex of the funnel-shaped bottom. An example is a structure in which parts are connected. Since the bottom of the container 1 is funnel-shaped, the powder 6 supplied into the container 1 is discharged from the outlet under its own weight, so scattering of the powder 6 inside the container 1 can be suppressed, and the powder can be collected without waste. 6 can be discharged from the container 1. Furthermore, by connecting a mounting jig to the discharge port, connection to the powder transport member 2 becomes easy.

The powder transport member 2 is a member for connecting the container 1 and the addition device 3 and supplying the powder 6 from the container 1 to the addition device 3. Such a powder transport member 2 is not particularly limited as long as it is a member that can circulate the powder 6 inside, but examples include rigid pipes used for piping, flexible hoses, etc. It will be done.

The above-mentioned pipes include those made of rigid materials, such as pipes made of known materials such as copper pipes, stainless steel pipes, and synthetic resin pipes.
Further, the hose may be made of any material having flexibility, such as rubber, thermoplastic elastomer, thermoplastic resin, etc.
Such a powder transport member 2 is appropriately determined in consideration of the type of powder flowing therein, the load applied when the powder passes, and the like.
Among these, the hose having the above-mentioned flexibility is preferable. Since the powder transport member 2 has flexibility, even if there is an obstacle between the container 1 and the addition device 3, the powder transport member 2 can be arranged to avoid the obstacle. Therefore, the powder supply/addition device 10 according to the present invention can be easily installed in an existing factory. Further, by having flexibility, it can be made less susceptible to damage by powder flowing inside.

As the flexible powder transport member 2, for example, a hose made of rubber, thermoplastic elastomer, thermoplastic resin, etc. is suitably used.
In the present invention, the length of the hose may be appropriately determined depending on the layout of the factory in which the powder supply/addition device according to the present invention is installed, but the length of the hose may be, for example, 5 m or more. It is preferable. When the length of the hose is 5 m or more, for example, it becomes easy to arrange the addition device 3 above the addition target 5 while the container 1 is installed on the ground. Note that the length of the hose may be less than 5 m depending on the site where the supply/addition device according to the present invention is actually installed.

The addition device 3 is a device for adding the powder 6 supplied from the container 1 through the powder transport member 2 to the addition target 5, and adds the powder 6 to the addition target 5 continuously and without pressure. Equipped with means for adding powder.
The powder addition means is not particularly limited as long as it can continuously and pressurelessly add the powder 6 to the addition target 5, but examples include a screw feeder, a belt conveyor, a circle feeder (registered trademark), and a disc conveyor. etc. Among these, a screw feeder is preferred because it can more effectively suppress scattering of the powder 6.
Note that "continuously and without pressure" is a condition in which the added powder 6 is added continuously without pulsation or scattering to an extent that does not cause problems, and is not specifically limited, but for example, When the powder adding means is a screw feeder, the rotation speed is preferably about 10 to 100 rpm, but is not limited thereto.

Further, although not shown, it is preferable that the powder supply/addition device 10 according to the present invention includes a control section that controls the addition speed of the powder supply means according to the flow rate of the addition target material 5. For example, when the powder supply means is a screw feeder, the amount of powder 6 to be added can be adjusted by controlling the rotation speed of the screw of the screw feeder according to the flow rate of the substance to be added 5 by the control section. This makes it possible to continuously add the powder 6.

It is preferable that the addition device 3 equipped with the powder supply means is placed above the object 5 to be added. When installing the powder supply/addition device 10 according to the present invention in an existing factory, it is often difficult to secure the installation space. It is easier to secure the powder 6, and the powder 6 can be added to the addition target 5 by utilizing the natural fall of the powder 6 that is added continuously and without pressure, so scattering of the powder 6 can be suppressed more effectively. can.

In the powder supply/addition device 10 according to the present invention, the powder 6 is not particularly limited, but for example, a powder having a particle size of about 1 to 1000 μm is suitably used. Examples include polymer powders such as flocculants, water-absorbing resins, and dispersants, and inorganic powders such as calcium carbonate powder, calcium oxide powder, and magnesium oxide powder. In addition, the particle diameter of the powder 6 has a more preferable lower limit of 100 μm, and a more preferable upper limit of 500 μm.
Further, examples of the additive object 5 to which the powder 6 is added include powders such as coal, coke, iron ore, and biomass fuel, and arbitrary materials such as industrial products such as foods, machinery, and plastic products. It will be done.

Such an addition target 5 is placed and moved on a moving device 7 such as a belt conveyor, and when it comes below the addition device 3, the powder 6 is added thereto.
As shown in FIG. 1, when the addition target 5 is a powder and is widely placed on the moving device 7, or when the addition target 5 is a large industrial product, the powder 6 In order to uniformly add to the addition object 5, the addition device 3 may be arranged so as to move in the width direction of the addition object 5, or a plurality of addition devices 3 may be arranged in the width direction of the addition object 5. May be placed.

Since the powder supply/addition device 10 according to the present invention has the above-described configuration, it can prevent damage to supply members such as hoses, effectively prevent powder scattering during supply and addition, and furthermore, can prevent the powder from scattering during supply and addition. The installation location can be freely selected.
A powder supply/addition method using the powder supply/addition device according to the present invention is also one of the present inventions.

Since the powder supply/addition method of the present invention uses the powder supply/addition device described above, it is possible to suppress scattering of the powder during transfer and damage to members such as hoses, and the addition device is placed above the object to be added. Since it is easy to arrange, it can also be suitably applied to existing factories.
On the other hand, if the powder is transferred from the container to the addition device using air pressure, the powder is transferred under pressure, making it impossible to prevent the powder from scattering around the device. Because a large amount of pressure is applied to the hoses and other members that connect the equipment, there is a risk that the hoses will come off or break.
Furthermore, if the powder is transferred from the container to the addition device using a mono pump, it is difficult to transfer the powder to a high position, and the addition device cannot be installed above the object to be added. In addition, there is a risk that powder may remain in the hose when the Mono pump is stopped, causing blockage.

According to the powder supply/addition device of the present invention, damage to supply members such as hoses can be prevented, powder scattering can be effectively prevented during supply and addition, and the installation location of the device can be freely selected. be able to.

FIG. 1 is a schematic diagram showing an example of a powder supply/addition device according to the present invention.

1 Container 2 Powder transportation member 3 Addition device 4 Suction means 5 Addition target 6 Powder 7 Transfer device 10 Powder supply and addition device

Claims (4)

A powder supply/addition device comprising a container for storing powder, an addition device for adding the powder to an object to be added, and a powder transportation member connecting the container and the addition device. ,
A suction means is connected to the powder transport member,
The powder is sucked from the container by the suction means and supplied to the addition device through the powder transport member,
A powder supply/addition device characterized in that the addition device includes a powder addition means that can continuously and pressurelessly add the powder to the object to be added. The powder supply/addition device according to claim 1, further comprising a control section that controls the addition speed of the powder supply means according to the supply amount of the powder. The powder supply/addition device according to claim 1 or 2, wherein the addition device is arranged above the object to be added. A method for supplying and adding powder using the powder supply and addition apparatus according to claim 1 or 2.

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