JP5883184B1 - Feeder device - Google Patents

Abstract

A feeder device having a simple structure and operation and easy maintenance is provided. A feeder device for supplying a granular material, comprising: a valve body that is rotationally driven; a valve chamber; and a first port and a second port that communicate with the valve chamber. And a valve main body, the valve body including a supply passage through which powder particles pass, and the supply passage by rotating the valve body. Is connected to the first port or the second port. [Selection] Figure 5

Description

  The present invention relates to a feeder device that supplies a granular material.

  Conventionally, as shown in Patent Documents 1 to 3, an impeller type, a gear type, and a screw type have been proposed as feeders for granular materials.

JP-A-7-277524 Japanese Patent Laid-Open No. 7-315583 Japanese Unexamined Patent Publication No. 7-330166

  Here, the feeder devices as shown in Patent Documents 1 to 3 have a problem that the structure is complicated, the number of parts is large, and as a result, maintenance is troublesome. In addition, as a simple structure of the feeder device, a combination of two two-way valves as shown in FIG. 11 can be considered. In (4), four steps (a) to (d) are required, and the installation space is also increased. In addition, in FIG. 11, the code | symbol C described in the right side of a two-way valve has shown the closed state of the two-way valve, and the code | symbol O has shown the open state of the two-way valve.

  Therefore, an object of the present invention is to provide a feeder device that has a simple structure and operation and is easy to maintain.

The present invention
A feeder device for supplying powder particles,
A rotationally driven valve body;
A valve body, a first port and a second port communicating with the valve chamber, and a valve body that rotatably houses the valve body in the valve chamber,
The valve body includes a supply passage through which the granular material passes,
When the valve body rotates, the supply passage is connected to the first port or the second port.

  With a simple structure and operation of supplying the granular material from the first port to the second port via the supply passage, or supplying the granular material from the second port to the first port via the supply passage, the quantity is determined. A feeder device can be provided. Moreover, since the feeder apparatus has a simple structure, maintenance can be easily performed.

The present invention preferably further comprises the following configuration.
(1) The supply passage has a bent portion;
The first port and the second port are provided at positions facing the valve chamber.
(2) The feeder device is formed by a three-way valve,
The three-way valve includes the first port and the second port facing each other, and a third port provided in a direction orthogonal to the first port and the second port,
The third port is closed.
(3) The feeder device is formed by a three-way valve,
The three-way valve includes the first port and the second port facing each other, and a third port provided in a direction orthogonal to the first port and the second port,
A flushing device is connected to the third port.
(4) The rotational speed of the valve body while the supply passage is in communication with the first port or the second port is determined while the supply passage is not in communication with the first port or the second port. The rotational speed of the valve body is slow.
(5) The first port is a supply port that supplies the granular material to the supply passage,
The second port serves as a discharge port for discharging powder particles from the supply passage,
While the supply passage is in communication with the first port, the supply passage is filled with powder particles.
(6) The first port is a supply port that supplies the granular material to the supply passage,
The second port serves as a discharge port for discharging powder particles from the supply passage,
While the supply passage is in communication with the second port, all the powder particles in the supply passage are discharged.

  According to the configuration (1), the seal portion between the valve body and the valve chamber can be enlarged by bending the supply passage and causing the first port and the second port to face the valve chamber. As a result, it is possible to suppress leakage of the granular material and keep the supply amount constant.

  According to the said structure (2), a feeder apparatus can be formed using a three-way valve.

  According to the configuration (3), the powder particles in the supply passage can be supplied without fail by flushing from the flushing device.

  According to the configuration (4), supply of the granular material from the first port to the supply passage and supply of the granular material from the supply passage to the second port, or of the granular material from the second port to the supply passage. In the supply of the granular material from the supply and supply passage to the first port, the clogging of the granular material and the residual of the granular material can be suppressed, and the flow of the granular material can be made smooth.

  According to the said structure (5), a granular material can be reliably filled with the whole in a supply channel | path.

  According to said structure (6), the whole granular material in a supply channel can be reliably discharged | emitted from a supply channel.

  In short, according to the present invention, it is possible to provide a feeder device that has a simple structure and operation and is easy to maintain.

It is a schematic block diagram of the granular material supply system containing the feeder apparatus which concerns on embodiment of this invention. It is the schematic of a feeder apparatus. It is the schematic of the feeder apparatus following the state of FIG. 2 which shows the action | operation of a feeder apparatus. It is the schematic of the feeder apparatus following the state of FIG. 3 which shows the action | operation of a feeder apparatus. It is the schematic of the feeder apparatus following the state of FIG. 4 which shows the action | operation of a feeder apparatus. It is the schematic of the feeder apparatus following the state of FIG. 5 which shows the action | operation of a feeder apparatus. It is the schematic of a feeder apparatus with which the flushing apparatus is connected to the 3rd port. It is the schematic at the time of the granular material supply of the feeder apparatus whose angle of the bending part of a supply passage is 180 degree | times. It is the schematic at the time of the granular material discharge | emission of the feeder apparatus whose angle of the bending part of a supply channel | path is 180 degree | times. It is the schematic of the feeder apparatus which has two supply paths. It is the schematic explaining the operation | movement procedure of the feeder apparatus which combined two two-way valves.

  FIG. 1 is a schematic configuration diagram of a granular material supply system 10 including a feeder device 1 according to an embodiment of the present invention. As shown in FIG. 1, the powder supply system 10 includes a hopper 11 to which powder is supplied, a storage tank 12 in which powder is stored, and a feeder device 1 that supplies a certain amount of powder. And a first valve 13 for adjusting the supply of the granular material from the hopper 11 to the storage tank 12 and a second valve 14 for adjusting the supply of the granular material from the storage tank 12 to the feeder device 1. The storage tank 12 is provided with a vacuum exhaust pipe 15 and a purge pipe 19 so as to enable vacuum exhaust and purge with a purge gas (for example, nitrogen gas). The storage tank 12 is provided with a pressure sensor 16 for pressure detection. In addition, a level sensor 18 that detects the amount of powder is provided between the second valve 14 and the feeder device 1 in the powder supply line 17 from the hopper 11 to the powder supply destination. Yes. The granular material is supplied from the hopper 11 to the storage tank 12 through the first valve 13, stored in the storage tank 12, and then supplied to the feeder device 1 through the second valve 14, and then the feeder device 1. A fixed amount is supplied to the supply destination. The evacuation pipe 15 and the purge pipe 19 are provided with on / off valves (not shown), and the on / off valves are opened and closed by signals from the pressure sensor 16 and the level sensor 18.

FIG. 2 is a schematic diagram of the feeder device 1. As shown in FIG. 2, the feeder device 1 is
The valve body 2 is formed by a three-way valve and is driven to rotate, has a valve chamber 30, and a first port 31 and a second port 32 that communicate with the valve chamber 30. And a valve body 3 that is rotatably housed therein. The first port 31 is provided in the feeder device 1 on the upstream side of the powder supply line 17, and the second port 32 is a position facing the first port 31 with respect to the valve chamber 30, and is the feeder. In the apparatus 1, the apparatus is provided on the downstream side of the powder body supply line 17. As described above, since the feeder device 1 is formed by a three-way valve, the third port 33 provided in a direction orthogonal to the first port 31 and the second port 32 is closed by the plug 4 or the like. ing.

  The valve body 2 includes a supply passage 21 through which powder particles pass. The supply passage 21 has one bent portion 21a, and has an L shape with an angle D1 of the bent portion 21a being approximately 90 degrees. The supply passage 21 is connected to the first port 31 or the second port 32 when the valve body 2 rotates in the valve chamber 30. The outer peripheral portions 2 a and 2 b of the valve body 2 excluding the supply passage 21 form a seal with the valve chamber 30.

  The granular material supply system 10 is configured to operate as follows.

  Before the operation, all of the first valve 13, the second valve 14, and the feeder device 1 are closed.

  First, powder is manually supplied to the hopper 11.

  Next, the first valve 13 is opened, and the granular material stored in the hopper 11 is transferred to the storage tank 12.

  Then, the first valve 13 is closed, and the storage tank 12 is evacuated using the evacuation pipe 15. Thereafter, the purge pipe 19 is used to perform nitrogen purge with nitrogen gas. The pressure of the nitrogen gas is equal to or lower than the atmospheric pressure and is detected by the pressure sensor 16, but this pressure can be set arbitrarily.

  By opening the 2nd valve | bulb 14 and opening the feeder apparatus 1 after that (the valve body 2 is rotated), a fixed amount of granular material is supplied to a supply destination.

  The granular material in the storage tank 12 is decreasing, and the level sensor 18 detects that the granular material is reduced in the granular material supply line 17 and instructs the hopper 11 to replenish the granular material. Put out.

  The second valve 14 is closed, the purge tank 19 is used to purge with nitrogen gas, and the storage tank 12 is brought to atmospheric pressure while being detected by the pressure sensor 16. Thereafter, the first valve 13 is opened again, and the granular material stored in the hopper 11 is transferred to the storage tank 12. When gas such as selenium (Se) is present at the supply destination, the gas enters the supply passage 21 in exchange for the granular material, and flows back in order from the storage tank 12 to the hopper 11 (outside air). Therefore, it is preferable to evacuate the storage tank 12 once using the evacuation pipe 15 before returning the storage tank 12 to atmospheric pressure.

  Next, the operation of the feeder device 1, specifically, the rotation of the valve body 2 will be described below with reference to FIGS.

  As shown in FIG. 2, the granular material supplied from the first port 31 flows into the supply passage 21. Here, since the third port 33 is closed, the granular material is accumulated in the supply passage 21. Since the supply passage 21 is L-shaped, there may be a portion S having an angle of repose θ that is not filled with the granular material. The repose angle θ is the maximum angle of the slope that maintains stability without spontaneous collapse when the powder particles are stacked in the supply passage 21 of FIG.

  However, as shown in FIG. 3, when the valve body 2 starts to rotate in the R direction in the valve chamber 30, the part S is also filled with the powder, and the entire supply passage 21 is filled with the powder. The body is filled. Here, the supply passage 21 is not in communication with the first port 31 and the second port 32 while the supply passage 21 is in communication with the first port 31 so that the portion S is easily filled with the granular material. The rotational speed of the valve body 2 is slowed compared to that in between. In particular, since the granular material is filled in the portion S before the angle D2 formed by the horizontal plane H and the first side 211 on the short side of the supply passage 21 reaches the repose angle θ, the angle D2 becomes the repose angle θ. The rotational speed of the valve body 2 is slowed down so that the granular material is supplied from the first port 31 to the supply passage 21. Note that the rotation of the valve body 2 may be stopped at a constant angle equal to or less than the angle of repose θ, and the supply passage 21 may be filled with powder particles.

  Further, for example, the inner diameter d1 of the first port 31 and the inner diameter d2 of the supply passage 21 are set so that the supply of the granular material from the first port 31 does not stop before the angle D2 becomes larger than the repose angle θ. The dimension is such that the first port 31 and the supply passage 21 communicate with each other until the valve body 2 rotates and the angle D2 becomes larger than the repose angle θ.

  As shown in FIG. 4, when the supply passage 21 does not communicate with the first port 31, the rotational speed of the valve body 2 is increased. Then, as shown in FIG. 5, when the supply passage 21 communicates with the second port 32, the granular material in the supply passage 21 starts to be supplied to the supply destination through the second port 32. Here, while the supply passage 21 is in communication with the second port 32, the supply passage 21 is connected to the first port 31 and the second port 32 so that all the powder particles in the supply passage 21 pass through the second port 32. The rotational speed of the valve body 2 is made slower than when the port 32 is not in communication. In particular, the angle D3 formed between the second short surface 212 of the supply passage 21 and the horizontal plane H is reduced until the amount of powder particles in the supply passage 21 is less than half of the total amount filled in the supply passage 21. The valve body 2 is rotated at a speed that does not become the repose angle θ or less. Note that the rotation of the valve body 2 may be stopped at a constant angle equal to or greater than the angle of repose θ, so that the entire amount of powder particles in the supply passage 21 may pass through the second port 32. Then, when the amount of the granular material in the supply passage 21 becomes less than half of the total amount filled in the supply passage 21, the rotation speed of the valve body 2 is increased, and as shown in FIG. Is completely in communication with the second port 32, the rotation of the valve body 2 is stopped.

  Further, in order to prevent the angle D3 from becoming smaller than the angle of repose θ before the remaining amount of the granular material in the supply passage 21 becomes equal to or less than the bent portion 21a with respect to the horizontal plane H, for example, The inner diameter d3 and the inner diameter d4 of the supply passage 21 are the first until the valve body 2 rotates and the angle D3 becomes smaller than the repose angle θ and until the upper surface of the granular material becomes the bent portion 21a or less in the horizontal plane H. The dimensions are such that the 2-port 32 and the supply passage 21 are in communication. Moreover, the rotational speed of the valve body 2 is adjusted so that it may become above.

  When all the powder particles in the supply passage 21 are supplied, the valve body 2 is rotated in the direction opposite to the R direction in the valve chamber 30 so that the supply passage 21 is completely communicated with the first port. At the time (state of FIG. 2), the rotation of the valve body 2 is stopped.

  According to the feeder device 1 configured as described above, the following effects can be exhibited.

(1) It is possible to provide the feeder device 1 capable of measuring a fixed amount with a simple structure and operation of supplying the granular material from the first port 31 to the second port 32 through the supply passage 21. In addition, since the feeder device 1 has a simple structure, maintenance can be easily performed.

(2) The supply passage 21 has an L-shaped bent portion 21 a, and the first port 31 and the second port 32 are provided at positions facing the valve chamber 30. Therefore, since the outer peripheral portions 2a and 2b of the valve body 2 excluding the supply passage 21 form a seal with the valve chamber 30, a seal portion (outer peripheral portion) between the valve body 2 and the valve chamber 30 is formed. 2a, 2b) can be taken large, and as a result, leakage of the granular material can be suppressed and the supply amount can be kept constant.

(3) The feeder device 1 includes a first port 31 and a second port 32 facing each other, and a third port 33 provided in a direction orthogonal to the first port 31 and the second port 32. Since the three-port 33 is formed of a closed three-way valve, the feeder device 1 can be formed using the three-way valve.

(4) The rotational speed of the valve body 2 while the supply passage 21 is in communication with the first port 31 or the second port 32 is determined while the supply passage 21 is not in communication with the first port 31 or the second port 32. Since the rotation speed of the valve body 2 is slow, the supply of the granular material from the first port 31 to the supply passage 21 and the supply of the granular material from the supply passage 21 to the second port 32 are performed. Therefore, the clogging of the granular material and the residual of the granular material can be suppressed, and the flow of the granular material can be made smooth.

(5) The valve body so that the granular material is supplied from the first port 31 to the supply passage 21 until the angle D2 formed by the horizontal plane H and the first side 211 of the short side of the supply passage 21 reaches the repose angle θ. By slowing down the rotation speed of 2, the portion S of the supply passage 21 can be filled with the granular material. Further, by stopping the rotation of the valve body 2 at a constant angle equal to or less than the angle of repose θ, the supply passage 21 can be filled with powder particles.

(6) The angle D3 formed by the second short surface 212 of the supply passage 21 and the horizontal plane H until the amount of the granular material in the supply passage 21 becomes equal to or less than half of the total amount filled in the supply passage 21. By rotating the valve body 2 at such a speed that the angle of repose does not become the repose angle θ or less, the granular material in the supply passage 21 is moved to the second port so that the granular material does not remain on the second short side surface 212. 32.

(7) The angle D3 formed between the short-side second surface 212 of the supply passage 21 and the horizontal plane H is a constant angle equal to or greater than θ, and the rotation of the valve body 2 is stopped, whereby powder on the short-side second surface 212 It is possible to prevent the particles from remaining.

(8) Since the supply of powder from the first port 31 does not stop before the angle D2 becomes larger than the angle of repose θ, the powder in the entire supply passage 21 It can be surely filled.

(9) Before the remaining amount of the granular material in the supply passage 21 becomes equal to or less than the bent portion 21a with respect to the horizontal plane H, the angle D3 does not become smaller than the repose angle θ. The total amount of powder particles in the passage 21 can be reliably discharged from the supply passage 21.

(Another embodiment)
In the above embodiment, the third port 33 is closed, but a flushing device may be connected to the third port 33.

  FIG. 7 is a schematic diagram of the feeder device 1 in which the flushing device 34 is connected to the third port 33. As shown in FIG. 7, the inside of the supply passage 21 can be flushed by the flushing device 34 connected to the third port 33.

  As shown in FIG. 7, when the valve body 2 rotates and the supply passage 21 completely communicates with the second port 32, the third port 33 also communicates completely. Here, when the inside of the supply passage 21 is flushed by the flushing device 34 connected to the third port 33, all the granular materials in the supply passage 21 can be supplied to the supply destination. For example, the flushing valve 34b is opened and flushing is performed with a gas such as nitrogen supplied from the flushing gas supply source 34a. When the flushing device 34 is connected to the third port, the amount of powder in the supply passage 21 is less than half of the total amount charged in the supply passage 21 until the supply passage 21 The valve body 2 is rotated at such a speed that the angle D3 formed between the short side second surface 212 and the horizontal plane H does not become the repose angle θ or less, or the short side second surface 212 of the supply passage 21 and the horizontal plane H It is not necessary to stop the rotation of the valve body 2 at an angle D3 formed by

  According to the above-described configuration, the powder particles in the supply passage 21 can be supplied without fail by flushing from the flushing device 34.

  In the above embodiment, the granular material is supplied from the first port 31 to the second port 32 through the supply passage 21, but the first port 31 and the second port 32 are turned upside down, Supply the granular material from the second port 32 to the first port 31 via the supply passage 21 so as to supply and discharge the granular material from the lower side to the upper side, not by the natural fall from the top to the bottom. You may come to do. In addition, the first port 31 and the second port 32 are provided at positions facing the valve chamber 30, but if the first port 31 is higher than the second port 32, the first port 31 is provided. And the second port 32 do not have to face each other. Further, it is preferable that the first port 31 is located at the highest position of the valve chamber 30 and the second port 32 is located at the lowest position of the valve chamber.

  According to the above embodiment, the angle D1 of the bent portion 21a of the supply passage 21 is approximately 90 degrees, but is not limited to 90 degrees, and may be smaller or larger than 90 degrees, but preferably 90 degrees or more. It is 180 degrees or less. For example, FIG. 8 and FIG. 9 show a feeder device in the case where the angle D1 is 180 degrees, FIG. 8 shows the state of supplying the granular material to the supply passage, and FIG. 9 shows the state of the granular material from the supply passage. The time of discharge is shown. By setting the angle D1 to an angle in the above range, the flow of the granular material in the supply passage 21 can be made smooth. Moreover, according to the said embodiment, although the supply channel | path 21 is one, there may be multiple. FIG. 10 is a schematic view of a feeder apparatus having two supply passages. According to the feeder device shown in FIG. 10, at the same time when the powder body is filled in one supply passage, the powder body filled in the other supply passage can be supplied, By rotation, it becomes possible to supply the granular material twice. As a result, the supply speed of the powder particles can be doubled, and the life of the feeder device can be extended.

  Various modifications and changes may be made to the above embodiments without departing from the spirit and scope of the invention as set forth in the claims.

  In the present invention, a feeder device having a simple structure and operation and easy to maintain can be provided, and thus the industrial utility value is great.

DESCRIPTION OF SYMBOLS 1 Feeder apparatus 2 Valve body 2a Outer peripheral part 2b Outer peripheral part 21 Supply passage 21a Bending part 3 Valve main body 30 Valve chamber 31 1st port 32 2nd port 33 3rd port 34 Flushing apparatus 34a Flushing gas source 34b Flushing valve 4 Plug 10 Powder Granule supply system 11 Hopper 12 Storage tank 13 First valve 14 Second valve 15 Vacuum exhaust pipe 16 Pressure sensor 17 Granule supply line 18 Level sensor 19 Purge piping

Claims (5)

A feeder device for supplying powder particles,
A rotationally driven valve body;
A valve body, a first port and a second port communicating with the valve chamber, and a valve body that rotatably houses the valve body in the valve chamber,
The valve body includes a supply passage through which the granular material passes,
When the valve body rotates, the supply passage is connected to the first port or the second port,
The first port is a supply port that supplies the granular material to the supply passage,
The second port serves as a discharge port for discharging powder particles from the supply passage,
The supply passage has an L shape with one bent portion, and the angle of the bent portion is approximately 90 degrees,
The supply passage has a short side first surface extending in a direction orthogonal to the first port and a short side second surface extending in the first port direction in a state of being completely connected to the first port. And,
The inner diameter of the first port and the inner diameter of the supply passage are such that the valve body rotates and the angle formed between the first surface on the short side of the supply passage and the horizontal plane is larger than the repose angle of the granular material. Until, the first port and the supply passage are configured to communicate with each other,
The inner diameter of the second port and the inner diameter of the supply passage are such that the angle between the second side on the short side of the supply passage and the horizontal plane is smaller than the angle of repose of the granular material when the valve body rotates. And the feeder device is configured such that the second port and the supply passage communicate with each other until the upper surface of the granular material is below the bent portion in a horizontal plane. . A feeder device for supplying powder particles,
A rotationally driven valve body;
A valve body, a first port and a second port communicating with the valve chamber, and a valve body that rotatably houses the valve body in the valve chamber,
The valve body includes a supply passage through which the granular material passes,
When the valve body rotates, the supply passage is connected to the first port or the second port,
The first port is a supply port that supplies the granular material to the supply passage,
The second port serves as a discharge port for discharging powder particles from the supply passage,
The supply passage has an L shape with one bent portion, and the angle of the bent portion is approximately 90 degrees,
The supply passage has a short side first surface extending in a direction orthogonal to the first port and a short side second surface extending in the first port direction in a state of being completely connected to the first port. And,
The inner diameter of the first port and the inner diameter of the supply passage are such that the valve body rotates and the angle formed between the first surface on the short side of the supply passage and the horizontal plane is larger than the repose angle of the granular material. Until, the first port and the supply passage are configured to communicate with each other,
The rotational speed of the valve body is such that the supply passage communicates with the first port or the second port until the angle formed between the first surface on the short side of the supply passage and the horizontal surface becomes the repose angle of the granular material. A feeder device characterized by being slow with respect to the rotational speed of the valve body while it is not . A feeder device for supplying powder particles,
A rotationally driven valve body;
A valve body, a first port and a second port communicating with the valve chamber, and a valve body that rotatably houses the valve body in the valve chamber,
The valve body includes a supply passage through which the granular material passes,
When the valve body rotates, the supply passage is connected to the first port or the second port,
The first port is a supply port that supplies the granular material to the supply passage,
The second port serves as a discharge port for discharging powder particles from the supply passage,
The supply passage has an L shape with one bent portion, and the angle of the bent portion is approximately 90 degrees,
The supply passage has a short side first surface extending in a direction orthogonal to the first port and a short side second surface extending in the first port direction in a state of being completely connected to the first port. And,
The inner diameter of the first port and the inner diameter of the supply passage are such that the valve body rotates and the angle formed between the first surface on the short side of the supply passage and the horizontal plane is larger than the repose angle of the granular material. Until, the first port and the supply passage are configured to communicate with each other,
The angle formed by the second side of the short side of the supply passage and the horizontal plane is the repose of the granular material until the amount of the granular material in the supply passage is less than half of the total amount filled in the supply passage. The feeder device is configured to rotate the valve body at a speed that does not become less than an angle . A feeder device for supplying powder particles,
A rotationally driven valve body;
A valve body, a first port and a second port communicating with the valve chamber, and a valve body that rotatably houses the valve body in the valve chamber,
The valve body includes a supply passage through which the granular material passes,
When the valve body rotates, the supply passage is connected to the first port or the second port,
The first port is a supply port that supplies the granular material to the supply passage,
The second port serves as a discharge port for discharging powder particles from the supply passage,
The supply passage has an L shape with one bent portion, and the angle of the bent portion is approximately 90 degrees,
The supply passage has a short side first surface extending in a direction orthogonal to the first port and a short side second surface extending in the first port direction in a state of being completely connected to the first port. And,
The inner diameter of the first port and the inner diameter of the supply passage are such that the valve body rotates and the angle formed between the first surface on the short side of the supply passage and the horizontal plane is larger than the repose angle of the granular material. Until, the first port and the supply passage are configured to communicate with each other,
The angle formed between the first surface on the short side of the supply passage and the horizontal plane is a constant angle equal to or smaller than the repose angle of the granular material, the rotation of the valve body is stopped, and the granular material is filled into the supply passage. A feeder device characterized in that the feeder device is configured to be configured. A feeder device for supplying powder particles,
A rotationally driven valve body;
A valve body, a first port and a second port communicating with the valve chamber, and a valve body that rotatably houses the valve body in the valve chamber,
The valve body includes a supply passage through which the granular material passes,
When the valve body rotates, the supply passage is connected to the first port or the second port,
The first port is a supply port that supplies the granular material to the supply passage,
The second port serves as a discharge port for discharging powder particles from the supply passage,
The supply passage has an L shape with one bent portion, and the angle of the bent portion is approximately 90 degrees,
The supply passage has a short side first surface extending in a direction orthogonal to the first port and a short side second surface extending in the first port direction in a state of being completely connected to the first port. And,
The inner diameter of the first port and the inner diameter of the supply passage are such that the valve body rotates and the angle formed between the first surface on the short side of the supply passage and the horizontal plane is larger than the repose angle of the granular material. Until, the first port and the supply passage are configured to communicate with each other,
The angle formed by the second surface on the short side of the supply passage and the horizontal plane is a constant angle equal to or greater than the repose angle of the granular material, and the rotation of the valve body is stopped, so that all the granular material in the supply passage is discharged A feeder device, characterized in that the feeder device is adapted .

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