JPH10218366A - Storage device for pneumatically transported powder and granular substance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve working efficiency by shortening a time from a gas suction device stoppage to the complete opening of an on-off valve to discharge a powder or granular substance. SOLUTION: When a gas suction device is stropped, a discharge port on-off valve is closed in linkage with the stop thereof, suction of gas in a storage tank 1 from the inside of the storage tank 1 due to an inertia action of the gas suction device is prevented. thereafter, through an action of a holder 53 (through lowering of a cam surface of a cam plate 54 by a rod 56 according to the force of a spring 57), a given gap 43 is forcibly provided between an on-off valve body 37 and the peripheral edge of a powder or granular substance discharge port 26. Thereby, the atmospheric air is introduced into the storage tank 1 and the inside of the storage tank 1 returns to an atmospheric pressure in a short time. Accordingly, the weight of the stored powder or granular substance overcomes the force of a balance weight 40, the on-off valve 37 is opened to a position of a one-dotted chain line and powder or granular substance is discharged through a powder or granular substance discharge part 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for storing powders and granules transported by gas (for example, powders and granules such as synthetic resin raw materials).

[0002]

2. Description of the Related Art Hitherto, the following types of storage devices have been known. That is, a storage tank, a gas suction device connected to a gas suction port provided at a required portion of the tank body of the storage tank, and a powder material supply port at an upper portion of the tank body of the storage tank, At the lower part, there is provided a powder / granule discharge port which can be opened and closed by an on-off valve body, and the gas suction port is provided in the tank main body. The passage is defined as a powder supply port and a powder discharge port by a permissible perforated plate, and the powder discharge port is directed obliquely downward (a virtual inclined surface including the powder discharge port and a powder discharge port). The angle formed by the vertical surface lowered from the upper end of the outlet is less than 90 degrees), and an opening / closing valve for opening and closing the particulate discharge port is provided at the free end of the swing arm, The rocking arm is provided on the tank body so as to be rockable up and down. A balance weight is provided so as to be located on the opposite side to the on-off valve body, and in a state where the balance between the balance weight and the on-off valve body is balanced, between the on-off valve body and the peripheral edge of the granular material discharge port. An arrangement in which a predetermined gap is formed is known.

[0003]

The operation of the prior art will be described below. A powder / particle storage source (having a gas inlet) in which the powder is stored is connected to the powder supply port. After such preparation, the following operation is performed by operating the gas suction device. In other words, before the gas suction device is operated, the state in which the particulate discharge port is not completely closed by the action of the balance weight, that is, a standby state is provided with a predetermined gap between the powder discharge port and the particulate discharge port. When the gas suction device is operated, the inside of the storage tank has a negative pressure due to the operation of the gas suction device, so that the opening / closing valve body is sucked toward the granular material discharge port side, thereby completely closing the granular material discharge port. At this time, the powder particles adhering to the periphery of the powder discharge port and the portion of the opening / closing valve body opposed thereto are soared upward by the flow of air flowing into the storage tank through the gap therebetween, so that the opening / closing valve The body will close without biting of the granular material. After that, since the inside of the storage tank becomes further negative pressure, the granular material flows into the storage tank together with the gas from the granular material supply port,
The gas exits through the gas suction port, and the granular material is stored in the storage tank. Then, when a predetermined amount of the granular material accumulates, the gas suction device is stopped. As a result, the self-weight of the stored granules overcomes the force of the balance weight due to the fact that the pressure in the storage tank is no longer negative, so that the on-off valve body opens, and the granules are discharged from the granule discharge port. Is more exhausted. When the granular material is completely discharged from the storage tank, the opening / closing valve body returns to the above-described state in which the granular material discharge port is substantially closed (the state in which the granular material discharge port is not completely closed) by the function of the balance weight.

[0004]

Disadvantages of the prior art The conventional storage apparatus has the following disadvantages. That is, the gas suction device is stopped when a predetermined amount of the granular material accumulates, and then completely stopped after the gas suction device operates for a predetermined time by inertia, and then the air naturally flows into the storage tank and the storage tank is stopped. Wait for the inside to return to atmospheric pressure naturally, and as a result, open and close the valve body automatically by the own weight of the stored granules, and discharge the granules from the granule discharge port. For this reason, the time from when the gas suction device is stopped to when the on-off valve body is completely opened and the powder and granules are discharged becomes considerably long, and the operating efficiency is poor.

[0005]

The present invention employs the following means to solve the above-mentioned drawbacks. The invention according to claim 1 is connected to a storage tank, a gas suction device in which a suction port is connected to a gas suction port provided in a required portion of a tank body of the storage tank, and a discharge port of the gas suction device. A discharge port opening / closing valve, wherein the discharge port opening / closing valve is configured to open the discharge port while the gas suction device is operating, and to close the discharge port in conjunction with stopping of the gas suction device. A powder supply port is provided at an upper portion of a tank body of the storage tank, and a powder discharge port is provided at a lower portion of the tank body so as to be openable and closable by an on-off valve body, and the gas suction port is provided in the tank body. The perforated plate, which is provided and does not allow the passage of the granular material of the set size and permits the passage of the gas, is defined as the granular material supply port and the granular material discharge port.

[0006]

The first aspect of the present invention has the following functions. When the gas suction device stops, the discharge port opening / closing valve closes in conjunction with it, preventing the gas in the storage tank from being sucked from the storage tank by the inertial operation of the gas suction device, so that the inside of the storage tank can be quickly operated. It is possible to return to the atmospheric pressure, and as a result, it is possible to shorten the time from when the gas suction device is stopped to when the opening / closing valve body is completely opened and the particulates are discharged, thereby improving the operation efficiency. . In addition, when the discharge port opening / closing valve is closed, the flow of the gas flowing backward in the storage tank is instantaneously generated, so that the powder flowing from the porous plate can be removed by the gas flowing backward.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, three embodiments of the present invention will be described with reference to the drawings. In these descriptions, the same members are denoted by the same reference numerals.

[First Embodiment of the Invention] (Refer to FIGS. 1 to 4) In a storage tank 1 described later in detail, a guide cylinder 8 is connected to a powder material inlet 51 of a top wall 50 of a hopper dryer 49. And is attached to the top wall 50 of the hopper dryer 49. The tank body 3 of the storage tank 1 includes an upper member 5,
A known number of connecting tools (not shown) are provided below the upper member 5.
A cylindrical body 6 connected and detachably connected by
It has a downwardly tapered cylindrical lower member 7 connected to the lower end of the body 6 and a downwardly projecting guide cylinder 8 connected to the upper part of the lower member 7.

The upper member 5 includes a top wall 12 and the top wall 1.
And a cylindrical peripheral wall 13 provided in a hanging shape on the peripheral edge of the second. An opening 15 is formed in the top wall 12, and a powder supply pipe 16 is connected to the opening 15 from above the top wall 12, and a supply cylinder 17 projects downward from below the top wall 12. It is connected. The lower part of the supply cylinder 17 is formed as a tapered cylindrical expansion part 17a that expands downward with an expansion angle α, and the lower end of the expansion part 17a forms a powder material supply port 18. The mouth 18 is located below the lower edge of the peripheral wall 13 of the upper member 5.

[0010] A tapered cylindrical perforated plate 20 extending downward, which allows the passage of gas without permitting the passage of powder having a predetermined size and surrounds the supply cylinder 17, surrounds the lower peripheral edge of the peripheral wall 13 ( It is provided in the tank main body 3 so as to abut (close) the upper peripheral edge of the supply cylinder 17 or the top wall 12. The divergence angle β of the perforated plate 20 is set to be larger than the divergence angle α of the expanding portion 17a. A gas suction port 22 is formed on the peripheral wall 13 of the upper member 5 so as to be located above the granular material supply port 18, and an exhaust pipe 23 is connected to the gas suction port 22.

A lower end of the lower member 7 is formed as a powder outlet 26 which is directed downward (including substantially directly below). An opening 28 is formed in a required portion of the guide tube 8, and a pair of brackets 29 are provided on the lower member 7 so as to fit in the opening 28 at a predetermined interval in the direction of the paper surface of FIG. 2. A swing arm 31 is provided at 29 via a pivot 30 so as to be vertically swingable.
2, a boss-shaped support cylinder 32 having a vertical or substantially vertical axis in the state of the solid line in FIG. 2 is provided. The support cylinder 32 has a shaft 33 having a stopper 34 at the lower end thereof.
An opening / closing valve body 37 which is vertically movable and slightly inclined in an arbitrary direction with respect to the support cylinder 32 and which is upwardly convexly curved is attached to the upper end of the shaft 33. An elastic ring 35 made of rubber or the like is fitted on the upper part of the shaft 33 so that the shaft 33 can be vertically moved with respect to the support cylinder 32. With such a configuration, the on-off valve body 37
Is slightly movable up and down at a position where the powder material outlet 26 is closed or almost closed. Further, when the on-off valve body 37 comes into contact with the peripheral edge of the granular material discharge port 26, the direction thereof can be changed within a predetermined range so as to seal the granular material discharge port 26 in accordance with the force received from the peripheral edge. . It goes without saying that the on-off valve body 37 may be fixed to the swing arm 31.

A screw shaft 39 is provided on the opposite side of the swing arm 31 with respect to the pivot 30. A balance weight 40 is screwed onto the screw shaft 39 so that the position of the balance arm 40 can be adjusted. A lock nut 41 screwed onto the screw shaft 39 can be fixed at a predetermined position. That is, by adjusting the position of the balance weight 40, the predetermined gap 43 is provided between the on-off valve body 37 and the peripheral edge of the granular material discharge port 26 in a state where the balance between the balance weight 40 and the on-off valve body 37 is balanced. Is formed. That is, in a state where no negative pressure is applied to the storage tank 1, a state shown by a solid line in FIG. 2, that is, a state in which a predetermined gap 43 is formed between the opening / closing valve body 37 and the periphery of the granular material discharge port 26. It has been made like that. And in this state,
The width of the gap 43 is made equal or almost equal over the entire circumference of the on-off valve body 37. Then, the on-off valve body 37 is raised from the state of the solid line in FIG. 2 as shown by the arrow L by setting the inside of the storage tank 1 to a negative pressure, so that the granular material discharge port 26 is completely closed. It has been done. The swing arm 31 is moved counterclockwise from the state shown by the solid line in FIG.
When it swings 0 degrees, that is, when the on-off valve body 37 is
6 is completely retracted from immediately below the lower member 7.
The swing arm 31 is provided with a stopper 44 which abuts on the swing arm 31. A detector 46 for detecting the balance weight 40 when the swing arm 31 swings 90 degrees counterclockwise from the state shown by the solid line in FIG. 2 uses the balance weight 40 provided on the lower member 7 and the like. It is provided on a surrounding cover 47.

The balance weight 40 and the on-off valve body 37
In a state where the balance is balanced, that is, in a state in which a predetermined gap 43 is formed between the on-off valve body 37 and the peripheral edge of the granular material discharge port 26, this state is maintained.
3 is provided across the swing arm 31 and the tank body 3 (specifically, the bracket 29). The retainer 53 includes:
Although the swing arm 31 resists swinging in the direction in which the on-off valve body 37 is closed, the swing arm 31 is allowed to swing in the direction in which the on-off valve body 37 is opened. Here, "resisting the swing arm 31 from swinging in the direction to close the opening and closing valve body 37" means that the swing arm 31 is completely prevented from swinging in the direction to close the opening and closing valve body 37. However, if the force acting on the on-off valve body 37 in the direction to close the on-off valve body 37 is within a set value, it means that the force is overcome and the on-off valve body 37 is not completely closed. Further, as described above, the opening / closing valve body 37 itself is slightly moved up and down even if the swing arm 31 does not swing in the direction to close the opening / closing valve body 37. Even when the on-off valve body 37 is positioned at the uppermost position with respect to the swing arm 31 in a state in which the balance with the body 37 is balanced, the on-off valve body 37 does not abut on the peripheral edge of the granular material discharge port 26. Has been made.

The retainer 53 is provided with a cam plate 5 provided on one bracket 29 provided on the lower member 7 of the tank body 3.
4 and a pair of support plates 55 provided on the swing arm 31 that abut against the cam surface 54a of the cam plate 54.
and a spring 57 for pushing the rod 56 in a direction toward the cam surface 54a of the cam plate 54. In the state shown in FIG. 2, the spring 57 has a free length and does not receive a compressive force.
The rod 56 is provided with a stopper 58 that comes into contact with the support plate 55 so that the rod 56 does not come out to the cam plate 54 side. Note that both ends of the spring 57 are configured to abut against a spring plate 59 provided on the rod 56 and a support plate 55 with which the stopper 58 contacts.

When the swing arm 31 swings in a direction to close the on-off valve body 37 (clockwise in FIG. 3), the rod 5
6 is configured to climb a cam surface 54a of the cam plate 54 (a cam surface 54a inclined downward toward the lower side) against the force of a spring 57. When the body 37 is swung in the opening direction (counterclockwise in FIG. 3), the cam 37 is separated from the cam surface 54a of the cam plate 54.

As shown in FIG. 1, a suction port 62 of a gas suction device 61 is connected to an exhaust pipe 23 connected to the gas suction port 22.
The outlet 66 of the gas suction device 61 is connected to an inlet 66 of a discharge port opening / closing valve 65. The discharge port opening / closing valve 65 is connected to the discharge port 62 while the gas suction device 61 is operating.
Is opened (communicated with the inlet 66 and the outlet 67 opened to the atmosphere), and the discharge port 62 is closed in conjunction with the stop of the gas suction device 61 (the outlet 67 is closed by the valve body 68). To).

The hopper dryer 49 has a drying gas circulation device 74 including a blower 71, a gas dryer 72 and the like.
Is connected.

The upper member 5 is provided with a required number of cleaning gas jetting nozzles (not shown) for removing powder particles attached to the downward surface of the perforated plate 20. By spraying the cleaning gas onto the perforated plate 20 from above from the cleaning gas jet nozzle, the powder particles attached to the downward surface of the perforated plate 20 can be removed.

[0019]

Next, the operation of the first embodiment of the present invention will be described. The powder supply pipe 16 is connected to a powder storage source (not shown) having a gas inlet, in which the powder is stored. After such preparation, if the gas suction device 61 is operated, the following operation is performed. That is,
Before the gas suction device 61 operates, the balance weight 4
The opening / closing valve body 37 in a state in which the granular material discharge port 26 is not completely closed by the action of 0, that is, a state in which a predetermined gap 43 is provided between the open / close valve body 37 and the granular material discharge port 26, When the gas suction device 61 is operated, the inside of the storage tank 1 becomes negative pressure.
As shown by the arrow L in FIG. 2 with the swing of the drum 31, it moves upward to completely close the granular material discharge port 26. At this time, the powder / particle discharge port 26 is directed right below, and the entire periphery of the powder / particle discharge port 26 is almost the same distance as the gas suction port 22. The powder particles adhering to the valve element 37 are soared upward at the same or almost the same speed by the air flow of the same or almost the same speed flowing into the storage tank 1 through the gap 43 between them. The on-off valve body 37 is completely closed without biting of the granular material. With the operation, the rod 56 climbs the cam surface 54a of the cam plate 54 against the force of the spring 57. Thereafter, since the inside of the storage tank 1 further becomes a negative pressure, the powder and the granular material flow into the storage tank 1 together with the gas from the powder and granular material supply port 18, the gas exits from the gas suction port 22, and the powder and the granular material It is stored in the storage tank 1. Then, when a predetermined amount of the granular material accumulates, the gas suction device 61 is stopped. When the gas suction device 61 stops, the discharge port opening / closing valve 6 operates in conjunction therewith.
5 is closed, and the gas in the storage tank 1 is prevented from being sucked from the storage tank 1 by the inertial operation of the gas suction device 61. Thereafter, the predetermined gap 43 is forcibly formed between the opening / closing valve body 37 and the periphery of the granular material discharge port 26 by the action of the retainer 53 (by the rod 56 descending the cam surface 54a according to the force of the spring 57). Therefore, the atmosphere is introduced into the storage tank 1, and the inside of the storage tank 1 is returned to the atmospheric pressure in a short time. Along with this, the own weight of the stored granules overcomes the force of the balance weight 40, the opening / closing valve body 37 opens to the position indicated by the dashed line in FIG.
Exhausted from 6. When the granular material is completely discharged from the storage tank 1, the opening / closing valve body 37 returns to a state in which the granular material discharge port 26 is substantially closed (a state in which the granular material discharge port 26 is not completely closed) by the action of the balance weight 40. . In this state, even if the gas suction device 61 does not operate and the force for pushing the open / close valve body 37 upward acts on the open / close valve body 37, if the force is within the set value, the spring 57 Overcomes the force and does not completely close the on-off valve body 37. When the above-mentioned force (the force for pushing the opening / closing valve body 37 upward on the opening / closing valve body 37) is no longer applied, the opening / closing valve body 37 is moved between the opening / closing valve body 37 and the periphery of the granular material discharge port 26 by the action of the cam surface 54a. The state returns to the state where the predetermined gap 43 is left.

[Second Embodiment of the Invention] (See FIG. 5) A suction port 62 of a gas suction device 61 is connected to a gas suction port 22 of the storage tank 1 via an exhaust pipe 23. , A suction opening / closing valve 78 is interposed. The inlet 79 of the suction port opening / closing valve 78 is connected to the gas suction port 22 via the exhaust pipe 23, and the outlet 80 is connected to the suction port 62 of the gas suction device 61 via the exhaust pipe 23. When the gas suction device 61 is in operation, the suction port opening / closing valve 78
2 and the gas suction port 22 of the storage tank 1 are communicated with each other.
The first suction port 62 and the gas suction port 22 of the storage tank 1 are shut off. The operation of the second embodiment of the present invention is the same as that of the first embodiment of the present invention, and a description thereof will not be repeated.

[Third Embodiment of the Invention] (See FIG. 6) An air inlet 83 is formed in the exhaust pipe 23, and the air inlet 83 can be opened and closed by an on-off valve 84. Is the air inlet 8 while the gas suction device 61 is operating.
3 is closed, and the air inlet 83 is opened in conjunction with the stop of the gas suction device 61. With such a configuration, the air inlet 83 is opened in conjunction with the stop of the gas suction device 61, and a large amount of air is introduced from the air inlet 83. Since the gas in the tank 1 is prevented from being sucked and the atmosphere flows into the storage tank 1, the inside of the storage tank 1 can be returned to the atmospheric pressure in a short time, and as a result, the gas suction device 61 Is stopped, the time from when the on-off valve body 37 is completely opened to when the granular material is discharged can be shortened, and the operation efficiency can be improved. In addition,
Atmosphere inlet 83 that can be opened and closed by an on-off valve 84
Are the powder supply pipe 16 and the upper member 5 of the tank body 3 of the storage tank 1.
(The top wall 12 or the peripheral wall 13) or at least one of the exhaust pipes 23.

[0022]

[Modifications and the like] Modifications and the like will be described below. (1) The powders and granules include powders, granules, minute flakes, short fiber pieces and the like. (2) The perforated plate 20 may be any material as long as it does not allow the passage of the powder and granules of the set size, but allows the passage of the gas. That is, the perforated plate 20 includes a filter and a net. Further, the shape of the perforated plate 20 is not limited to a tapered tubular shape expanding downward, and may be a tubular shape having a protruding flange at the lower end. (3) The expanding portion 17a of the supply cylinder 17 may not be provided. Further, the supply cylinder 17 including the expanding portion 17a may be configured by a perforated plate. (4) The on-off valve body 37 may be a simple flat plate or a cone. (5) The opening and closing of the on-off valve body 37 may be performed not by the balance weight 40 but by an operating device such as a fluid pressure cylinder. Also in this case, when the gas suction device 61 stops, the discharge port opening / closing valve 65 closes in conjunction therewith, thereby preventing the gas in the storage tank 1 from being sucked from the storage tank 1 by the inertial operation of the gas suction device 61. Therefore, the inside of the storage tank 1 can be returned to the atmospheric pressure in a short time, and the operation of opening the on-off valve body 37 by an operating device such as a fluid pressure cylinder can be performed quickly and easily. (6) The retainer 53 is brought into contact with the cam plate 54 provided on the swing arm 31 and the cam surface 54a of the cam plate 54.
A rod 56 is provided on the tank body 3 (bracket 29) so as to be able to advance and retreat with respect to the cam surface 54a, and a spring 57 for pushing the rod 56 in a direction toward the cam surface 54a of the cam plate 54 is provided. When the moving arm 31 swings in the direction to close the on-off valve body 37, the cam surface 54a of the cam plate 54 pushes the rod 56 against the force of the spring 57, and the cam plate 54 opens and closes. When the valve body 37 is swung in the opening direction, it may be detached from the rod 56. In this case, the cam plate 54 is turned upside down and left and right from the state shown in FIG. (7) The retainer 53 may not be provided. (8) The structures of the discharge port opening / closing valve 65 and the suction port opening / closing valve 78 are arbitrary. (9) The storage location of the storage device of the present invention is arbitrary.

[0023]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the first aspect of the invention, when the gas suction device stops, the discharge port opening / closing valve closes in conjunction therewith, thereby preventing the gas in the storage tank from being sucked from the storage tank by the inertial operation of the gas suction device. Therefore, the inside of the storage tank can be returned to the atmospheric pressure in a short time, and as a result, the time from when the gas suction device is stopped to when the on-off valve is completely opened and the powder is discharged is shortened. As a result, the operation efficiency can be increased. In addition, when the discharge port opening / closing valve is closed, the flow of the gas flowing backward in the storage tank is instantaneously generated, so that the powder flowing from the porous plate can be removed by the gas flowing backward. According to the invention of claim 2, when the gas suction device stops, the suction port opening / closing valve closes in conjunction therewith, thereby preventing the gas in the storage tank from being sucked from the storage tank by the inertial operation of the gas suction device. Therefore, the inside of the storage tank can be returned to the atmospheric pressure in a short time, and as a result, the time from when the gas suction device is stopped to when the on-off valve is completely opened and the powder is discharged is shortened. As a result, the operation efficiency can be increased. According to the third aspect of the present invention, the air inlet is opened in conjunction with the stop of the gas suction device, and a large amount of air is introduced from the air inlet. Since the gas inside is prevented from being sucked and the air flows into the storage tank, the inside of the storage tank can be returned to the atmospheric pressure in a short time, and as a result, after stopping the gas suction device, The operation time can be improved by shortening the time from when the on-off valve body is completely opened to when the granular material is discharged.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a storage tank part of FIG.

FIG. 3 is an enlarged view of a portion A in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a system diagram showing a second embodiment of the present invention.

FIG. 6 is a system diagram showing a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage layer 3 Tank main body 18 Granular material supply port 20 Perforated plate 22 Gas suction port 26 Powder and granular material discharge port 61 Gas suction device 63 Discharge port 65 Discharge port open / close valve 78 Suction port open / close valve 83 Atmospheric inlet port 84 Open / close valve

Continuation of front page (72) Inventor Junji Taniguchi 2-51-13 Ikebukuro, Toshima-ku, Tokyo Sakuma Building Inside the Tokyo Branch of Matsui Seisakusho Co., Ltd. (72) Inventor Osamu Matsui 6-5-26 Tanimachi, Chuo-ku, Osaka-shi, Osaka No. Matsui Manufacturing Co., Ltd.

Claims (3)

[Claims] 1. A storage tank, a gas suction device having a suction port connected to a gas suction port provided at a required portion of a tank body of the storage tank, and a discharge port connected to a discharge port of the gas suction device. An opening / closing valve, wherein the discharge port opening / closing valve is configured to open the discharge port while the gas suction device is operating, and to close the discharge port in conjunction with stopping of the gas suction device, A powder material supply port is provided at an upper portion of the tank body of the storage tank, and a powder material outlet port that can be opened and closed by an on-off valve body is provided at a lower portion of the tank body, and the gas suction port is provided in the tank body. Was
Storage of powder and granules transported by gas defined by a perforated plate, which is defined as a powder and granule supply port and a powder and particle discharge port, does not permit the passage of powder of the specified size and does not permit the passage of gas apparatus. 2. A storage tank, a gas suction device in which a suction port is connected to a gas suction port provided in a required portion of a tank main body of the storage tank, and a suction port of the gas suction device and gas suction of the storage tank. Having a suction port opening / closing valve provided in the middle of the mouth,
The suction port opening / closing valve communicates the suction port of the gas suction device with the gas suction port of the storage tank while the gas suction device is operating, and interlocks with the suction port of the gas suction device in conjunction with the stop of the gas suction device. The gas suction port of the tank is shut off, a powder supply port is provided at an upper part of the tank body of the storage tank, and a powder discharge port is provided at the lower part of the tank body which can be opened and closed by an on-off valve body. The gas suction port is provided in the tank main body, and is provided with a granular material supply port and a granular material discharge port by a perforated plate that does not allow the passage of powder of a set size and allows the passage of gas. A storage device for granular material transported by gas that is defined as an outlet. 3. A storage tank, a gas suction device having a suction port connected to a gas suction port provided at a required portion of the tank body of the storage tank via an exhaust pipe, and an upper portion of the tank body of the storage tank. A powder / particle supply pipe connected to the provided powder / particle supply port, and a powder / particle discharge port, which can be opened and closed by an on-off valve, is provided at a lower portion of the tank body of the storage tank. A gas supply port and a particle discharge port provided by a perforated plate, wherein the gas suction port is provided in the tank main body and does not allow passage of powder of a set size and permits passage of gas. In the storage device of the granular material transported by the gas, the air supply port is formed in at least one of the granular material supply pipe, the upper part of the tank body of the storage tank, or the exhaust pipe. The air inlet is openable and closable by an on-off valve. A storage device for storing particulates transported by a gas that has an air inlet closed and opens the air inlet in conjunction with a stop of a gas suction device.