JP6425909B2 - Shunting device, shunting method and program - Google Patents

Description

  The present invention relates to a flow dividing device, a flow dividing method and a program, and more particularly to a flow dividing device suitable for dividing powder flow, a flow dividing method and a program.

  Powders are used in a wide range of fields such as medicines such as drinking medicines, foods such as wheat flour and buckwheat flour, painting, sintering of metals, battery production, printing and the like.

  Conventionally, in an air-flow conveying method of powder and granular material in which powder and granular materials are distributed and conveyed to a plurality of conveyance paths by a distributor provided in the middle of the conveyance path, resistance to flow is resisted in the conveyance path on the downstream side of the distributor. There is also a system in which a gas is blown to adjust the flow rate balance of powder particles flowing in each transport path (see, for example, Patent Document 1).

Japanese Patent Laid-Open Publication No. 2001-29848

  However, in the distributor described in Patent Document 1, although the flow balance can be adjusted, the flow can not be diverted to such an extent that the flow is switched. In addition, although it is conceivable to provide a valve of a method of mechanically opening and closing the transport path through which the powder is transported in the transport path, the valve may be clogged with the powder and it may become impossible to transport.

  The present invention has been made in view of such a situation, and makes it possible to more reliably divert powder while reducing clogging more easily.

In the flow dividing apparatus according to one aspect of the present invention, the hollow cylindrical first transfer path in which the carrier medium, which is a gas, flows as an air stream, and the powder flows by the carrier medium , and the carrier medium flows as an air stream. A hollow cylindrical second transport path through which powder flows , and the second transport path branched from the first transport path at any angle of 15 degrees to 165 degrees with respect to the first transport path The transport path forming unit in which the transport path is formed and the outlet of the first transport path are provided, and when the transport medium and the powder are carried out from the outlet of the first transport path, the first transport path A negative pressure is generated in the carrier medium at the outlet side, and the carrier medium and the powder flow from the position where the first carrier path and the second carrier path are branched to the outlet side of the first carrier path. First transport means for transporting, provided at the outlet of the second transport path, second transport path When unloading the transport medium and the powder from the outlet, by causing a negative pressure in the carrier medium at the outlet side of the second transport path, the transport medium and the powder, the first conveying path and the second conveying The second transport means is provided to flow from the position where the path branches off to the outlet side of the second transport path to transport, and the first transport means and the second transport means transport exclusively in time. Transport the medium and the powder.

  The second transport path formed in the transport path forming unit can be branched from the first transport path at any angle of 30 degrees to 60 degrees with respect to the first transport path.

The first transport means and the second transport means are provided with holes or slits for spouting the gas , respectively, on the hollow cylindrical wall through which the transport medium and the powder are transported, and the transport medium and the powder are transported The axis of the direction and the axis of the direction in which the gas is ejected from the hole or the slit may be at an acute angle .

  In the first transport means, negative pressure is generated when the transport medium and the powder are unloaded from the outlet of the first transport path when the transport medium and the powder are not unloaded from the outlet of the first transport path. The negative pressure of a small absolute value is generated compared to the absolute value of the second transport path, and when the transport medium and the powder are not carried out from the outlet of the second transport path, A negative pressure with a smaller absolute value can be generated compared to the absolute value of the negative pressure generated when the carrier medium and the powder are discharged from the outlet.

One aspect methods of diversion of the present invention, the carrier medium is a gas is flowed as a stream, the first transport path powder hollow cylindrical flows, and the transport medium is flowed as a stream by the transport medium, the transport medium A hollow cylindrical second transport path through which powder flows , and the second transport path branched from the first transport path at any angle of 15 degrees to 165 degrees with respect to the first transport path A transport path forming unit in which the transport path is formed; a first transport means provided at the outlet of the first transport path for transporting the transport medium and the powder from the outlet of the first transport path ; A diverting method of a diverting apparatus comprising: second transport means provided at the outlet of the second transport path and transporting the transport medium and the powder from the outlet of the second transport path , the transport medium and the powder From the position where the first transport route and the second transport route are branched, When transported by flowing the outlet side of the path, the first conveying means, along with causing the negative pressure in the carrier medium at the outlet side of the first conveying path, the negative pressure in the transport medium of the second transport means When the transport medium and powder are transported from the position where the first transport path and the second transport path are branched to the outlet side of the second transport path, the second transport is suppressed. The means includes the steps of generating a negative pressure on the carrier medium at the outlet side of the second carrier path and suppressing the generation of a negative pressure on the carrier medium by the first carrier means.

In the program according to one aspect of the present invention, the hollow cylindrical first transport path in which the carrier medium, which is a gas, flows as an air stream, and the powder is made to flow by the carrier medium , and the carrier medium flows as an air stream. A hollow cylindrical second transport path through which powder flows , and the second transport path branched from the first transport path at any angle of 15 degrees to 165 degrees with respect to the first transport path. A transport route forming unit in which the transport route is formed; first transport means provided at an outlet of the first transport route for transporting the transport medium and the powder from the outlet of the first transport route; A carrier for controlling the diverting device provided at the outlet of the transport path, and the second transport means for transporting the transport medium and the powder from the outlet of the second transport path ; From the position where the first transport route and the second transport route are branched, When transported by flowing the outlet side of the first transport path, the first conveying means, along with causing the negative pressure in the carrier medium at the outlet side of the first conveyance path, to the carrier medium by the second transfer means When the negative pressure is suppressed and the transport medium and the powder are transported from the position where the first transport path and the second transport path are branched to the outlet side of the second transport path, (2) causing the negative pressure to be generated in the carrier medium at the outlet side of the second carrier path and performing the process including the step of suppressing the generation of the negative pressure on the carrier medium by the first carrier unit.

In one aspect of the present invention, a hollow cylindrical first transport path through which a carrier medium , which is a gas, is flowed as a gas flow to the transport path forming unit, and powder is made to flow by the carrier medium, and the carrier medium flows as a gas stream. A hollow cylindrical second transport path through which powder is flowed by the transport medium, and branching from the first transport path at any angle of 15 degrees to 165 degrees with respect to the first transport path When the carrier medium and the powder are carried out from the outlet of the first transport path by the first transport means provided at the outlet of the first transport path, the second transport path is formed. A negative pressure is generated on the carrier medium at the outlet side of the carrier path 1 to cause the carrier medium and the powder to branch from the position where the first carrier path and the second carrier path are branched from the first carrier path. is conveyed by passing the outlet side, a second that is provided at the outlet of the second transfer path The feed means, when unloaded the transport medium and the powder from the outlet of the second transfer path, and causing a negative pressure in the carrier medium at the outlet side of the second transport path, and a carrier medium and the powder, From the position where the first transport path and the second transport path are branched, it is transported to the outlet side of the second transport path and transported, and temporally exclusive in the first transport means and the second transport means The transport medium and the powder are transported to the

  As described above, according to one aspect of the present invention, powder can be diverted.

  In addition, according to one aspect of the present invention, powder can be more reliably diverted more easily and with less clogging.

FIG. 1 is a block diagram showing an entire configuration of a processing system 1; FIG. 2 is a diagram showing an outline of the configuration of a flow dividing device 13; FIG. 7 is a view showing a cross section of the flow dividing device 13; FIG. 2 is a block diagram showing the configuration of a control device 14; It is a timing chart which shows change of pressure of operation air _Ad1 and operation air _Ad2 . It is a figure which shows the discharge amount of the powder from the ejector 52 side, and the discharge amount of the powder from the ejector 53 side. It is a flow chart explaining processing of control of division.

  The embodiment of the present invention will be described below. The correspondence between the constituent requirements of the present invention and the embodiment described in the detailed description of the invention is as follows. This description is to confirm that the embodiments supporting the present invention are described in the detailed description of the invention. Therefore, although described in the detailed description of the invention, even if there is an embodiment which is not described herein as an embodiment corresponding to the constituent requirements of the present invention, the fact is that It does not mean that the embodiment does not correspond to the constituent requirements. Conversely, even if the embodiments are described herein as corresponding to configuration requirements, that means that the embodiments do not correspond to configuration requirements other than the configuration requirements. It is not something to do.

In the flow dividing apparatus according to one aspect of the present invention, first, a hollow cylindrical first transfer path (for example, the transfer path shown in FIG. 3) in which a carrier medium which is a gas flows as an air flow and powder flows by the carrier medium . 71) and a hollow cylindrical second transport path in which the transport medium is caused to flow as a gas flow and the powder is caused to flow by the transport medium , and any of 15 degrees to 165 degrees with respect to the first transport path. A transport path forming unit (for example, the branch block 51 in FIG. 2) in which a second transport path (for example, the transport path 72 in FIG. 3) branched from the first transport path at an angle is formed; When carrying out the carrier medium and the powder from the outlet of the first carrier path, negative pressure is generated in the carrier medium at the outlet side of the first carrier path, and The powder is separated from the position where the first transport path and the second transport path are branched, A first conveying means for conveying flowing to the outlet side of the first transport path (e.g., the ejector 52 of FIG. 2), provided at the outlet of the second conveying path, a conveying medium from the outlet of the second transport path When the powder is carried out, a negative pressure is generated in the carrier medium at the outlet side of the second carrier path, and the carrier medium and the powder are branched into the first carrier path and the second carrier path. And second transport means (for example, the ejector 53 in FIG. 2) which transports from the position to the outlet side of the second transport path and transports the first transport means and the second transport means in time Transport the transport medium and the powder exclusively.

Second, the flow dividing device according to one aspect of the present invention is a hole (for example, the air ejection port 84 or the air ejection port 94 in FIG. 3) which ejects a gas to the first transportation means and the second transportation means, respectively. Alternatively, a slit may be provided on the hollow cylindrical wall through which the transport medium and powder are transported, and the axis of the transport medium and powder in the transport direction and the axis in the direction in which gas is ejected from the holes or slits form an acute angle. Can be

In the flow dividing method according to one aspect of the present invention, a hollow cylindrical first transfer path (for example, the transfer path 71 in FIG. 3) in which a carrier medium which is a gas flows as an air flow and powder flows by the carrier medium ; A hollow cylindrical second transport path in which the transport medium flows as a gas flow and powder is caused to flow by the transport medium , and the first transport path is formed at a first angle from 15 degrees to 165 degrees relative to the first transport path. A transport route forming unit (for example, the branch block 51 in FIG. 2) in which a second transport route (for example, the transport route 72 in FIG. 3) branched from the transport route provided at the outlet, a first transport means for transporting the transport medium and the powder from the outlet of the first transport path (e.g., the ejector 52 of FIG. 2) and, provided at the outlet of the second conveying path, first second for transporting the transport medium and the powder from the outlet of the second transport path Feeding means (e.g., ejector 53 of FIG. 2) a diversion method diverter and a, a transport medium and the powder, from the position where the first transport path and the second conveying path branches, first The first transport means causes the transport medium to generate a negative pressure at the outlet side of the first transport path when flowing to the outlet side of the transport path of 1 and causes the second transport means to transport the medium. The generation of negative pressure is suppressed (for example, the procedure of step S12 and step S13 of FIG. 7), and the second position from the position where the first conveyance path and the second conveyance path are branched when transported by flowing the outlet side of the conveying path of the second transport device, together with causing negative pressure in the carrier medium at the outlet side of the second conveying path, the negative to the conveying medium by the first conveying means Suppress the generation of pressure (for example, step S14 of FIG. 7 and Including the procedure) step of step S15.

One aspect of the program of the present invention, the carrier medium is a gas is flowed as a stream, the first transport path the powder by the transport medium is a hollow cylindrical flows (e.g., the conveyance path 71 in FIG. 3), and the transport A hollow cylindrical second transport path in which the medium is caused to flow as a gas flow and the powder is transported by the transport medium , and the first transport path is formed at an angle of 15 degrees to 165 degrees relative to the first transport path. A transport route forming unit (for example, branch block 51 in FIG. 2) in which a second transport route (for example, transport route 72 in FIG. 3) branched from the transport route is formed, and an outlet of the first transport route provided, first transport means for transporting the transport medium and the powder from the outlet of the first transport path (e.g., the ejector 52 of FIG. 2) and, provided at the outlet of the second transport path, the second second for the conveyance of the conveying medium and the powder from the outlet of the conveying path Conveying means (e.g., ejector 53 of FIG. 2) to a computer that controls the flow splitter and a, a transport medium and the powder, from the position where the first transport path and the second conveying path branches, first when transported by flowing the outlet side of the conveying path of the first conveying means, along with causing the negative pressure in the carrier medium at the outlet side of the first conveying path, the negative to the conveying medium by the second transfer means The generation of pressure is suppressed (for example, the procedure of step S12 and step S13 of FIG. 7), and the transport medium and the powder are separated from the second transport path from the position where the first transport path and the second transport path are branched. The second transport means causes the transport medium to generate a negative pressure at the outlet side of the second transport path when flowing toward the outlet side of the transport path, and the negative pressure to the transport medium by the first transport means (For example, step S1 in FIG. 7). And procedures in step S15) to perform processing including steps.

  Hereinafter, with reference to FIGS. 1 to 7, a processing system 1 according to an embodiment of the present invention will be described.

FIG. 1 is a block diagram showing the entire configuration of a processing system 1. The processing system 1 divides and processes powdery solid, that is, powder that is an aggregate of powder or particles (particles). For example, powder is used for pharmaceuticals such as drinks, food such as wheat flour and buckwheat powder, powder paint used for painting, powder of metal such as tungsten used for sintering, powder used for manufacturing battery negative electrode, and printing Pigments used in the manufacture of inks, toners used in copying machines, cement, magnetic fluid, magnetic powder and the like. The particle size (particle size) of the particles forming the powder to which the processing system 1 is diverted is 10 ⁻² m to 10 ⁻⁹ m.

  The processing system 1 includes a supply tank 11, a fixed amount feeder 12, a diverting device 13, a controller 14, a processing device 15, and a recovery tank 16. The supply tank 11 stores powder for processing in the processing device 15. When the flowing air is supplied, the powder stored in the supply tank 11 is agitated, and the powder is supplied from the supply tank 11 to the quantitative supply device 12 through the pipe.

Dispensing device 12 includes, for example, a feeder and ejector screw, together with the conveying air A _C supplied from the control unit 14, the amount of the powder in accordance with the supply amount indicating signal supplied from the control unit 14 , Supply the flow dividing device 13 through piping.

Or diverter 13, depending on the operating air A _d1 and operating air A _d2 supplied from the control unit 14, the powder supplied together with the conveying air A _C from the dispensing device 12, flows into the processing device 15 via a pipe Or flow into the recovery tank 16 through piping. The processing device 15 processes the powder supplied from the flow dividing device 13. For example, the processing apparatus 15 fills a capsule made of a cylindrical gelatin body and a cap, which is a pharmaceutical product such as a drug for drinking, and closes the capsule. For example, the processing device 15 manufactures bread dough by kneading powder, which is wheat flour, with water.

Although an embodiment using air as the carrier air A _C , the working air _Ad1 and the working air _Ad2 will be described below, the invention is not limited to air, but may be an inert gas such as nitrogen or argon or various chemicals. A gas such as an active gas can also be used.

FIG. 2 is a diagram showing an outline of the configuration of the flow dividing device 13. The flow dividing device 13 includes a branch block 51, an ejector 52, and an ejector 53. The branch block 51 is formed of a resin such as polyethylene, a ceramic, or a metal such as stainless steel. Inside the branch block 51, a hollow cylindrical transport path for transporting the transport air _AC and the powder is formed. The transport path formed inside the branch block 51 extends to the ejector 52 side and branches to the ejector 53 side.

The ejector 52 is formed of resin such as polyethylene, ceramics, or metal such as stainless steel. Ejector 52, when operating air A _d1 supplied from the control unit 14 is the operation pressure P _d, together cause a negative pressure in the inlet side, by causing a positive pressure to the outlet side, the transport air A _C and Transport the powder. Operating pressure P _d is the same pressure or the pressure of the transport air A _C, or at a higher pressure than the pressure of the transport air A _C. That is, the ejector 52, the operating pressure P _d at a working air A _d1, of the transport path of the branch block 51, along with causing negative pressure in the conveying air A _C of the conveying path extending ejector 52 side, the processing apparatus 15 by causing the positive pressure conveying air a _C of the piping leading to, for conveying the conveying air a _C and powder in the transport path of decision block 51 toward the processing device 15.

Ejector 52, when operating air A _d1 supplied from the control unit 14 is a sealing pressure P _s, the absolute value of the negative pressure generating when unloading the transport air A _C and the powder from the outlet of the conveying path A relatively small negative pressure is generated in comparison to prevent backflow of the carrier air _AC and the powder. The seal pressure P _s is a pressure lower than the operating pressure P _{d and} higher than atmospheric pressure. _Assuming that the working air _Ad is the seal pressure P _s , a negative pressure with a smaller absolute value than the absolute value of the negative pressure generated when the carrier air _AC and the powder are carried out from the outlet of the carrier path is generated. , the outlet side, the positive pressure of the absolute value smaller absolute value as compared with the positive pressure generating when transporting the transport air a _C and powder occurs, suction of powder from the pipe leading to the processing unit 15 Can be prevented.

The ejector 53 is formed of a resin such as polyethylene, a ceramic, or a metal such as stainless steel. Ejector 53, when operating air A _d2 supplied from the control unit 14 is the operation pressure P _d, together cause a negative pressure in the inlet side, by causing a positive pressure to the outlet side, the transport air A _C and Transport the powder. That is, the ejector 53, the operating pressure P _d at a working air A _d2, of the transport path of the branch block 51, along with causing negative pressure in the conveying air A _C of the transport path branches into ejector 53 side, by causing the positive pressure conveying air a _C of the piping leading to the recovery tank 16 and conveys the transport air a _C and powder in the transport path of decision block 51 towards the recovery tank 16.

When the working air _Ad2 supplied from the control device 14 has the seal pressure P _s , the ejector 53 sets the absolute value of the negative pressure to be generated when the carrier air _AC and the powder are carried out from the outlet of the carrier path. A relatively small negative pressure is generated in comparison to prevent backflow of the carrier air _AC and the powder. When the working air A _d2 and sealing pressure P _s, caused negative pressure smaller absolute value compared to the absolute value of the negative pressure generating when unloading the transport air A _C and the powder from the outlet of the conveying path , the outlet side, the positive pressure smaller absolute value compared to the absolute value of the positive pressure generating when transporting the transport air a _C and powder occurs, suction of powder from the pipe leading to the recovery tank 16 Can be prevented.

  Next, detailed structures of the branch block 51, the ejector 52, and the ejector 53 will be described.

FIG. 3 is a view showing a cross section of the flow dividing device 13. Inside the branch block 51, a transport path 71 and a transport path 72 for transporting the transport air _AC and the powder are formed. The transport path 71 is formed as a cavity that leads from the inlet shown on the left side in FIG. 3 to the outlet shown on the right side in FIG. For example, the transport path 71 can be shaped so as to linearly extend in the transport direction from the inlet to the outlet. Moreover, the cross-sectional shape of the conveyance path 71 can be made into a fixed circle from an inlet to an outlet.

  The transport path 72 is formed as a cavity which branches from the transport path 71 and is connected to the outlet shown on the lower side in FIG. 3 which is an outlet different from the outlet of the transport path 71. For example, the transport path 72 can be shaped so as to linearly extend in the transport direction from the position branched from the transport path 71 to the outlet. Further, the cross-sectional shape of the transport path 72 can be a constant circle from the position branched from the transport path 71 to the outlet. The cross section of the transport path 72 can be made equal in shape to the cross section of the transport path 71.

  More specifically, an axis passing through the center of the circular cross section of the transport path 72, which is an axis indicating the transport direction of the transport path 72, is an axis showing the transport direction of the transport path 71. One end of the transfer path 72 is connected to the middle of the transfer path 71 so as to intersect the passing axis.

Thus, the transport path 71 and the transport path 72 are formed in a shape that does not impede the flow of the transport air _AC and the powder. The transport path 71 and the transport path 72 are not provided with a mechanism that regulates the flow, such as a valve that opens and closes.

The angle θ between the axis indicating the conveyance direction of the conveyance path 71 and the axis indicating the conveyance direction of the conveyance path 72 at any position where the conveyance path 72 branches from the conveyance path 71 is 15 degrees to 165 degrees. Can. According to the experiment, if the transport path 72 is branched from the transport path 71 within the range of 15 degrees to 165 degrees, the transport air _AC and the powder can be divided, and the processing device 15 or the recovery tank 16 it can safely transport air a _C and powder either one was confirmed.

More preferably, the angle θ formed by the transport path 71 and the transport path 72 at a position where the transport path 72 branches from the transport path 71 can be any of 30 degrees to 60 degrees. As a result of the experiment, it was confirmed that when the transport path 72 is branched from the transport path 71 within the range of 30 degrees to 60 degrees, the reproducibility can be increased, and the diverted flow can be more reliably and stably. Therefore, in this case, more reliably, more stable, so it can safely transport air A _C and powder in one of the processing device 15 or the recovery tank 16.

  That is, the transport path 72 branches from the transport path 71 at any angle of 15 degrees to 165 degrees with respect to the transport path 71. More preferably, the transport path 72 is branched from the transport path 71 at any angle of 30 degrees to 60 degrees with respect to the transport path 71.

From the inlet of the conveyance path 71, the conveyance air _AC and the powder supplied from the fixed amount supply device 12 are taken in. The transport air _AC and the powder taken in from the inlet of the transport path 71 are carried out from the outlet of the transport path 71 or carried out from the outlet of the transport path 72.

  Thus, the transport path 71 is hollow and formed in a tubular shape. The conveyance path 72 is hollow and branched from the conveyance path 71, and is formed in a cylindrical shape. The transport path 71 and the transport path 72 are formed so as to be closed and airtight except for the inlet and the outlet, respectively.

  The outlet of the transport path 71 is connected to the inlet side of the ejector 52 so as to maintain airtightness. Further, the outlet of the transport path 72 is connected to the inlet side of the ejector 53 so as to maintain airtightness.

The ejector 52 includes a conveyance path 81, an operation air introduction unit 82, an operation air distribution unit 83, an air jet port 84, and a throttle unit 85. The transport path 81 is formed inside the ejector 52 main body. The transport path 81 is a hollow (in the form of a hollow cylinder) coaxially extending with the axis of the transport path 71 in the transport direction. For example, the transport path 81 is formed as a cavity extending linearly from the outlet of the transport path 71. The cross-sectional shape of the inlet of the transport path 81 is formed to be the same as the cross-sectional shape of the outlet of the transport path 71. In this way, it is possible to prevent adhesion of turbulence and powder flow conveying air A _C.

A pipe for introducing the working air _Ad1 is connected to the working air introducing unit 82, and the working air _Ad1 is supplied. Working air A _d1 supplied to the working air inlet section 82 is sent to the operating air distributor 83. The working air distribution unit 83 is a hollow formed separately from the transport path 81, and is formed in an annular shape that makes a round around the outside of the transport path 81 around a point on the axis in the transport direction of the transport path 81. Hollow.

From working air distribution unit 83, in a direction perpendicular or acute angle to the conveying air A _C and powder transport direction of the axis of the conveying path 81 (transport path 71), a tube for passing the working air A _d1 is formed Then, the pipe for passing the working air _Ad1 opens on the wall surface of the transfer path 81 as the air jet port 84. A plurality of tubes for passing the working air _Ad1 are formed at equal intervals, and the plurality of air jet ports 84 respectively open on the wall surface of the transport path 81 at equal intervals. More specifically, the air spouting port 84 is provided on the circumference of a circle orthogonal to the axis about a point on the axis in the transport direction of the transport path 81.

  A throttling portion 85 is provided in the middle of the transport path 81. In the squeezing portion 85, the transport path 81 is squeezed. That is, the cross-sectional area of the transport path 81 gradually decreases to the narrowed portion 85 as it proceeds from the inlet, and gradually increases as it proceeds from the narrowed portion 85 to the outlet. The air jet port 84 is disposed in the vicinity of the throttle portion 85 and at a position closer to the outlet of the transport path 81.

At the operating pressure P _d , the air jet port 84 provided at a position beyond the throttling portion 85 as viewed from the inlet side makes a direction perpendicular or acute to the axis of the transport air A _C and powder transport direction. When a working air a _d1 is ejected as a transport air a _C, the throttle portion 85 is narrowed, negative pressure in the conveying air a _C at a flow rate of conveying air a _C and powder is increased, the inlet side of the ejector 52 It occurs, so that the negative pressure in the conveying air a _C on the outlet side of the conveying path 71 occurs. In this case, the transport air A _C on the outlet side of the ejector 52, the positive pressure required for conveying the powder occurs.

Further, when the operating air A _d1 is sealing pressure P _s is ejected as a transport air A _C from the air ejection port 84, the conveying air A _C on the outlet side of the ejector 52, the positive pressure required to prevent backflow Will occur.

The ejector 53 includes a conveyance path 91, an operation air introduction unit 92, an operation air distribution unit 93, an air jet port 94, and a throttle unit 95. The transport path 91 is formed inside the ejector 53 main body. The transport path 91 is a hollow (a hollow cylindrical shape) extending in the same direction as the axis of the transport path 72 in the transport direction. For example, the transport path 91 is formed as a cavity extending linearly from the outlet of the transport path 72. The cross-sectional shape of the inlet of the transport path 91 is formed to be the same as the cross-sectional shape of the outlet of the transport path 72. In this way, it is possible to prevent adhesion of turbulence and powder flow conveying air A _C.

A pipe for introducing the working air _Ad2 is connected to the working air introducing unit 92, and the working air _Ad2 is supplied. Working air A _d2 supplied to the working air inlet section 92 is sent to the operating air distributor 93. The working air distribution unit 93 is a hollow formed separately from the transport path 91, and is formed in an annular shape that makes a round around the outside of the transport path 91 around a point on the axis in the transport direction of the transport path 91. Hollow.

From working air distributing unit 93, in a direction perpendicular or acute angle to the conveying air A _C and powder transport direction of the axis of the conveying path 91 (transport path 72), a tube for passing the working air A _d2 is formed Then, the pipe for passing the working air _Ad2 opens on the wall surface of the transfer path 91 as an air jet port 94. A plurality of tubes for passing the working air _Ad2 are formed at equal intervals, and the plurality of air jet ports 94 respectively open at equal intervals on the wall surface of the transport path 91. More specifically, the air jets 94 are provided on the circumference of a circle orthogonal to the axis of the conveyance path 91 on the axis in the conveyance direction.

  A throttling portion 95 is provided in the middle of the transport path 91. In the squeezing portion 95, the transport path 91 is narrowed. That is, the cross-sectional area of the transport path 91 gradually decreases to the throttling portion 95 as it proceeds from the inlet, and gradually increases as it proceeds from the throttling portion 95 to the outlet. The air jet port 94 is disposed in the vicinity of the throttling portion 95 and at a position closer to the outlet of the transport path 91.

At an operating pressure P _d , the air jet port 94 is provided at a position beyond the throttle portion 95 as viewed from the inlet side, in a direction that forms a right angle or an acute angle with the transfer air A _C and the axis in the powder transfer direction. When a working air a _d2 is ejected as a transport air a _C, the throttle portion 95 is narrowed, raised flow velocity of the transport air a _C and powder, the negative pressure in the conveying air a _C at the inlet side of the ejector 53 It occurs, so that the negative pressure in the conveying air a _C on the outlet side of the conveying path 72 occurs. In this case, the transport air A _C on the outlet side of the ejector 53, the positive pressure required for conveying the powder occurs.

Further, when the operating air A _d2 is sealing pressure P _s is ejected as a transport air A _C from the air ejection port 94, the conveying air A _C on the outlet side of the ejector 53, the positive pressure required to prevent backflow Will occur.

Thus, the branch block 51, a hollow cylindrical conveying path 71 and conveyance path 72 to which the particles are transported is formed together with the conveying air A _C. The conveyance path 72 branches from the conveyance path 71 at an angle of 15 degrees to 165 degrees with respect to the conveyance path 71.

The ejector 52 is provided at the outlet of the transport path 71 and transports the transport air _AC and the powder from the transport path 71 in the same direction as the axis of the transport path 71 in the transport direction. Ejector 52, when unloading the transport air A _C and the powder from the outlet of the conveying path 71, causing a negative pressure in the conveying air A _C on the outlet side of the conveying path 71.

The ejector 53 is provided at the outlet of the transport path 72, and transports the transport air _AC and the powder from the transport path 72 coaxially with the axis of the transport path 72 in the transport direction. Ejector 53, when unloading the transport air A _C and the powder from the outlet of the conveying path 72, causing a negative pressure in the conveying air A _C on the outlet side of the conveying path 72.

  Next, the configuration of the control device 14 will be described. FIG. 4 is a block diagram showing the configuration of the control device 14. The control device 14 includes a computer 101 and an electro-pneumatic conversion unit 102.

  The computer 101 is a computer as a dedicated control device such as a so-called sequencer (programmable logic controller), a factory computer, or a general-purpose personal computer, etc., and executes the control program. Control.

The electro-pneumatic conversion unit 102 includes an air valve whose opening degree is controlled by an electric signal. The electro-pneumatic conversion unit 102, shunts the air supplied from the external transport air A _C, the operating air A _d1 or working air A _d2. The electro-pneumatic conversion unit 102, in response to an electrical signal supplied from the computer 101, changing such as pressure and flow rate of the transport air A _C, operating air A _d1 and working air A _d2.

  The computer 101 includes a central processing unit (CPU) 121, a read only memory (ROM) 122, a random access memory (RAM) 123, a bus 124, an input / output interface 125, an input unit 126, an output unit 127, a storage unit 128, and a communication unit. 129 and the drive 130.

  In the computer 101, the CPU 121, the ROM 122, and the RAM 123 are mutually connected by a bus 124.

  Further, an input / output interface 125 is connected to the bus 124. The input / output interface 125 acquires a signal indicating an instruction button, a switch, a dial, or a state of the processing device 15 (for example, a mode such as preparation, cleaning or processing, or a status such as stop, awaiting, or in process). An input unit 126 comprising an input board or the like, a display, a speaker, an output section 127 comprising an output board or the like for outputting binary or variable voltage / current, a storage section 128 comprising a hard disk or nonvolatile memory, etc. A communication unit 129 composed of a communication interface and the like, and a drive 130 for driving a removable medium 131 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory are connected.

More specifically, the output unit 127, electric emptied conversion unit 102, and supplies an electric signal for controlling the pressure and flow of the transport air A _C, operating air A _d1 and working air A _d2.

  In the computer 101 configured as described above, for example, the CPU 121 loads the control program stored in the storage unit 128 into the RAM 123 via the input / output interface 125 and the bus 124 and executes the control program as follows. A series of processes described below are performed.

  The control program executed by the computer 101 (CPU 121) is, for example, a magnetic disk (including a flexible disk), an optical disk (CD-ROM (Compact Disc-Read Only Memory), DVD (Digital Versatile Disc), etc.), magneto-optical disk, Alternatively, it may be recorded on removable media 131 which is a package media comprising semiconductor memory or the like, or may be provided via a wired or wireless transmission medium such as a local area network, the Internet or digital satellite broadcasting.

  The control program can be installed on the computer 101 by storing the removable medium 131 in the storage unit 128 via the input / output interface 125 by mounting the removable medium 131 on the drive 130. The control program can be installed in the computer 101 by being received by the communication unit 129 via a wired or wireless transmission medium and stored in the storage unit 128. In addition, the control program can be installed in the computer 101 in advance by storing the control program in the ROM 122 or the storage unit 128 in advance.

Next, control of the pressure of the working air _Ad1 and the working air _Ad2 will be described. Figure 5 is a timing chart showing changes in pressure in the working air A _d1 and operating air A _d2 is supplied to the diverter device 13 from the control device 14. In FIG. 5, the horizontal axis indicates the time direction, and the vertical axis indicates the pressure.

Until time t _1, since the pre-processing unit 15 for processing the is powder in the preparation mode, operating air A _d1 is a sealing pressure P _s, working air A _d2 is the operating pressure P _d. At this time, the transport air A _C and powder was fed into the separation device 13 from the dispensing device 12, the negative pressure of the transport air A _C generated at the outlet side of the conveying path 72, a conveyance path 72 branching block 51 It flows to the outlet side and flows to the recovery tank 16 through piping. Since the transport air _AC and the powder do not flow to the outlet side of the transport path 71 of the branch block 51, they are not supplied to the processing device 15. Also, working air A _d1 is because there is a sealing pressure P _s, the powder or dust from the piping to the processing device 15 does not flow back.

In the time from time t ₁ to time t _2, the so processing the powder at the processing device 15 becomes machining mode, operating air A _d1 is the operating pressure P _d, working air A _d2, the sealing pressure P _s . At this time, the transport air A _C and powder was fed into the separation device 13 from the dispensing device 12, the negative pressure of the transport air A _C generated at the outlet side of the conveying path 71, a conveyance path 71 branching block 51 It flows to the outlet side and flows to the processing device 15 through piping. Since the transfer air _AC and the powder do not flow to the outlet side of the transfer path 72 of the branch block 51, they do not flow to the recovery tank 16. Also, working air A _d2 is because there is a sealing pressure P _s, the powder from the pipe to a collection tank 16 will not flow back.

At time from time t ₂ to time t _3, since the processing device 15 becomes the cleaning mode to stop processing of the powder, working air A _d1 is a sealing pressure P _s, working air A _d2, the operation The pressure is P _d . At this time, the carrier air _AC and the powder flow through the piping to the recovery tank 16 and do not flow to the processing device 15.

Furthermore, in the time from time t ₃ to time t _4, since processing the powder at the processing device 15 becomes again working mode, working air A _d1 is the operating pressure P _d, working air A _d2 is The seal pressure is P _s . At this time, the carrier air _AC and the powder flow through the piping to the processing device 15 and do not flow to the recovery tank 16.

At time t ₄ after the completion of the processing of the powder in the processing device 15, operating air A _d1 is a sealing pressure P _s, working air A _d2 Because are operating pressure P _d, conveying air A _C The powder and the powder flow through the piping to the recovery tank 16 and not to the processing device 15.

In this manner, the control device 14 controls the ejectors 52 and 53 so that the ejector 52 and the ejector 53 exclusively and temporarily convey the carrier air _AC and the powder.

Here, the discharge amount (flow rate) of the powder from the ejector 52 side measured by experiment and the discharge amount (flow rate) of the powder from the ejector 53 side will be described. FIG. 6 is a diagram showing the discharge amount (flow rate) of powder from the ejector 52 side and the discharge amount (flow rate) of powder from the ejector 53 side. In FIG. 6 (A), the working air A _d1 and operating pressure P _d, the working air A _d2 discharge amount of powder from the ejector 52 side of the case of the sealing pressure P _s (flow rate) and the ejector 53 side The discharge amount (flow rate) of powder is shown. The working air A _d1 and operating pressure P _d, if the working air A _d2 was sealed pressure P _s, out of the powder fed into the separation device 13 from the dispensing device 12, 100.00% (by weight) of the ejector It is discharged from the 52 side (flow), and 0.00% (weight) is discharged (flowing) from the ejector 53 side.

In FIG. 6 (B), the operating air A _d1 and sealing pressure P _s, from the discharge amount (flow rate) and the ejector 53 side of the powder from the ejector 52 side of the case where the working air A _d2 and operating pressure P _d The discharge amount (flow rate) of powder is shown. The working air A _d1 and sealing pressure P _s, when the working air A _d2 and operating pressure P _d, of the powder fed into the separation device 13 from the dispensing device 12, 3.40% (by weight) of the ejector It is discharged from the 52 side (flow), and 96.60% (weight) is discharged (flowing) from the ejector 53 side.

  Thus, powder can be diverted more easily and more reliably.

  In addition, since the branch block 51, the ejector 52, and the ejector 53 do not have a configuration for closing the transport path, clogging can be further reduced.

Next, control of the diversion in the processing system 1 will be described. FIG. 7 is a flowchart for explaining the process of control of division control performed by the computer 101 that executes the control program. In step S11, the computer 101 determines whether or not the powder is to be unloaded to the processing device 15 from the current time and a sequence of predetermined times or the state of the processing device 15. In step S11, if it is determined that carries out the powder into the processing apparatus 15, the procedure proceeds to step S12, the computer 101 causes the output unit 127 to output the electrical signal to the working air A _d1 to operating pressure P _d . The electro-pneumatic conversion unit 102 in accordance with an instruction by the electric signal from the output unit 127, the working air A _d1 to operating pressure P _d. Ejector 52, the working air A _d1 operating pressure P _d, causing a negative pressure in the conveying air A _C on the outlet side of the conveying path 71.

After step S12, the procedure proceeds to step S13, the computer 101 causes the output unit 127 to output the electrical signal to the working air A _d2 in sealing pressure P _s. The electro-pneumatic conversion unit 102 in accordance with an instruction by the electric signal from the output unit 127, the working air A _d2 in sealing pressure P _s. Ejector 53, the working air A _d2 of sealing pressure P _s, causes a negative pressure in the conveying air A _C on the outlet side of the conveying path 72. Ejector 53 by operating air A _d2 of sealing pressure P _s is, the absolute value of the negative pressure producing the conveying air A _C on the outlet side of the conveying path 72, the operating pressure P _d the negative pressure generating by operating air A _d2 of Less than absolute value. In other words, the ejector 53 generates a degree of negative pressure necessary to prevent backflow and does not generate a degree of negative pressure necessary for conveyance. By supplying the working air A _d2 of sealing pressure P _s, the occurrence of negative pressure in the transport air A _C by ejector 53 can also be said to be inhibited.

That is, in steps S12 and S13, the computer 101, the ejector 52, with causing negative pressure in the conveying air A _C on the outlet side of the conveying path 71, the generation of negative pressure in the transport air A _C by ejector 53 Then, the carrier air _AC and the powder are carried out from the outlet of the carrier path 71.

  Thereby, the powder supplied from the fixed amount supply device 12 is carried out to the processing device 15.

On the other hand, in step S11, if the powder is determined not to carry-out the processing apparatus 15, the procedure proceeds to step S14, the computer 101 causes the output unit 127, an electric signal for the working air A _d1 to sealing pressure P _s Output The electro-pneumatic conversion unit 102 in accordance with an instruction by the electric signal from the output unit 127, the working air A _d1 to sealing pressure P _s. Ejector 52, the working air A _d1 of sealing pressure P _s, causes a negative pressure in the conveying air A _C on the outlet side of the conveying path 71. Ejector 52 by sealing pressure P _s working air A _d1 of the absolute value of the negative pressure producing the conveying air A _C on the outlet side of the conveying path 71, the operating pressure P _d the negative pressure brought about by operating air A _d1 of Less than absolute value. In other words, the ejector 52 generates a degree of negative pressure necessary to prevent backflow and does not generate a degree of negative pressure necessary for conveyance. By supplying the working air A _d1 of sealing pressure P _s, the occurrence of negative pressure in the transport air A _C by ejector 52 can also be said to be inhibited.

After step S14, the procedure proceeds to step S15, the computer 101 causes the output unit 127 to output the electrical signal to the working air A _d2 to operating pressure P _d. The electro-pneumatic conversion unit 102 in accordance with an instruction by the electric signal from the output unit 127, the working air A _d2 to operating pressure P _d. Ejector 53, the working air A _d2 operating pressure P _d, causing a negative pressure in the conveying air A _C on the outlet side of the conveying path 72.

That is, in steps S14 and S15, the computer 101, the ejector 53, with causing negative pressure in the conveying air A _C on the outlet side of the conveying path 72, the generation of negative pressure in the transport air A _C by ejector 52 Then, the carrier air _AC and the powder are carried out from the outlet of the carrier path 72.

  Thereby, the powder supplied from the fixed amount supply device 12 is carried out to the recovery tank 16.

  After step S13 and after step S15, the procedure returns to step S11, and the above-described process is repeated.

  When the end of the diversion process is requested from the outside due to completion of powder processing or the like, the diversion control process is stopped by an interrupt.

  The series of processes described above can be performed by software or hardware.

  Note that the control program executed by the computer 101 may be a program that performs processing in chronological order according to the order described in this specification, or may be necessary in parallel or when a call is performed. It may be a program that is processed at timing.

  Thus, powder can be more reliably diverted more easily and with less clogging.

Although ejector 52 has been described as conveyed in the conveying air A _C and powder processing device 15, ejector 53 may be transported to the processing device 15 a conveying air A _C and powder. The powder that has not been processed and has been transported from the ejector 53 may be returned to the supply tank 11.

Further, the ejector 52 and the ejector 53, respectively, in place of the air ejection port 84 or the air ejection port 94 for ejecting the working air A _d1 or working air A _d2 is conveyed medium, operating air A _d1 or working air A _d2 You may make it provide the slit which spouts.

  The branch block 51, the ejector 52, and the ejector 53 may be integrally formed.

  The transport path 71 and the transport path 72 are not limited to linear but may be curved and curved.

  The cross section of the transport path 71 and the cross section of the transport path 72 can be rectangular or polygonal without being limited to a circle. Although the cross-sectional shape of the conveyance path 72 has been described as being the same as the cross-sectional shape of the conveyance path 71, it may be different. The area of the cross section of the transport path 72 may be the same as or different from the area of the cross section of the transport path 71.

As described above, the branch block 51, a hollow cylindrical conveying path hollow cylindrical conveying path 71 to which the particles are conveyed together with the conveying air A _C, and a transport air A _C and the powder is transported 72 That is, the conveyance path 72 branched from the conveyance path 71 at an angle of 15 degrees to 165 degrees with respect to the conveyance path 71 is formed.

Ejector 52 is provided at the outlet of the conveying path 71, when unloading the transport air A _C and the powder from the outlet of the transport path 71, and causing a negative pressure in the conveying air A _C on the outlet side of the conveying path 71 The conveyance air _AC and the powder are conveyed from the conveyance path 71 coaxially with the axis in the conveyance direction of the conveyance path 71.

Ejector 53 is provided at the outlet of the conveying path 72, when unloading the transport air A _C and the powder from the outlet of the transport path 72, and causing a negative pressure in the conveying air A _C on the outlet side of the conveying path 72 Conveyance air _AC and powder are conveyed from the conveyance path 72 coaxially with the axis of the conveyance direction of the conveyance path 72.

The ejectors 52 and 53 convey the carrier air _AC and the powder exclusively in time.

  In this way, it is not necessary to provide a mechanism for mechanically opening and closing the transport path through which the powder is transported, so it is possible to more easily divert the powder while reducing clogging more easily.

  The conveyance path 72 formed in the branch block 51 can be branched from the conveyance path 71 at any angle of 30 degrees to 60 degrees with respect to the conveyance path 71. In this case, the powder can be diverted more reliably and more stably.

The ejector 52 and the ejector 53, respectively, the air ejection port 84 or the air ejecting port 94 or slit for ejecting the working air A _d1 or working air A _d2 is the conveyance medium, the conveying air A _C and the powder is transported pass provided in a hollow cylindrical wall, ejecting conveying air a _C and working air a in the conveying direction of the powder shaft and from the air ejecting port 84 or the air ejecting port 94 or slit is conveyed medium _d1 or working air a _d2 It can be perpendicular or at an acute angle with the axis of direction. Since ejects working air A _d1 or working air A _d2 is conveyed medium from the air jet port 84 or the air ejecting port 94 or slit, without interrupting the powder to be transported, more reliably prevent clogging due to powder can do.

The cross-sectional shape of the transport path 72 can be the same as the cross-sectional shape of the transport path 71. Even when repeated diversion of the powder, it is possible to further reduce the turbulence of the transport air A _C in the conveyance path 72 and conveyance path 71, it is possible to prevent clogging due to powder more securely.

The absolute value of the negative pressure generated when carrying out the carrier air _AC and the powder from the outlet of the carrier route 71 when the carrier air _AC and the powder are not carried out from the outlet of the carrier route 71 in the ejector 52 causing negative pressure smaller absolute value as compared with, the ejector 53, when not unloading and the transport air a _C and the powder from the outlet of the transport path 72, transport air a _C and flour from the exit of the conveying path 72 It is possible to generate a negative pressure of a small absolute value as compared to the absolute value of the negative pressure generated when carrying out with the body. By doing so, backflow of powder can be prevented.

Thus, the branch block 51, met hollow cylindrical conveying path 72 in which the hollow cylindrical conveying path 71, and a transport air A _C and the powder is transported to the powder is transported together with the conveying air A _C Forming the transport path 72 branched from the transport path 71 at an angle of 15 degrees to 165 degrees with respect to the transport path 71, and the ejector 52 is provided at the outlet of the transport path 71; when unloaded from the outlet and conveying air a _C and the powder transport path 71 by causing a negative pressure in the conveying air a _C on the outlet side of the transport path 71 in the axial direction coaxial to the conveying direction of the conveying path 71 When the carrier air _AC and the powder are carried from the side, the ejector 53 is provided at the outlet of the carrier path 72, and the carrier air _AC and the powder are carried out from the outlet of the carrier path 72, the outlet of the carrier path 72 and causing a negative pressure in the conveying air a _C on the side, the transport path 7 In the conveying direction of the conveying shaft and a conveying air A _C and the powder coaxially from the conveying path 72, ejector 52 and ejector 53, so as to convey temporally and exclusively conveyed air A _C and the powder In this case, the powder can be diverted more reliably and more easily while reducing clogging.

  Further, the embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 processing system, 11 supply tank, 12 fixed amount supply apparatus, 13 dividing flow apparatus, 14 control apparatus, 15 processing apparatus, 16 collection tank, 51 branch block, 52 and 53 ejector, 71 and 72 conveyance path, 81 conveyance path, 82 operation Air inlet, 83 operating air distributor, 84 air outlet, 85 throttle, 91 transport path, 92 operating air inlet, 93 operating air distributor, 94 air outlet, 95 throttle, 101 computer, 102 electro air Converter, 121 CPU, 122 ROM, 123 RAM, 128 storage, 131 removable media

Claims (6)

A carrier medium, which is a gas, flows as a gas flow, and a hollow cylindrical first carrier path through which the powder is made to flow by the carrier medium, and the carrier medium flows as a gas , and the powder is made to flow by the carrier medium. A hollow cylindrical second transport path, wherein the second transport path is branched from the first transport path at an angle of any of 15 degrees to 165 degrees with respect to the first transport path; A transport route forming unit being formed;
When the transport medium and the powder are carried out from the outlet of the first transport path provided at the outlet of the first transport path, a negative pressure is applied to the transport medium at the outlet side of the first transport path. To transport the transport medium and the powder from the position where the first transport path and the second transport path are branched to the outlet side of the first transport path . 1 transport means,
When the transport medium and the powder are carried out from the outlet of the second transport path provided at the outlet of the second transport path, a negative pressure is applied to the transport medium at the outlet side of the second transport path. To transport the transport medium and the powder from the position where the first transport path and the second transport path are branched to the outlet side of the second transport path . And 2 transport means,
The flow dividing device according to claim 1, wherein the first transport unit and the second transport unit transport the transport medium and the powder exclusively in time. In the flow dividing device according to claim 1,
The second transport path formed in the transport path forming unit is branched from the first transport path at any angle of 30 degrees to 60 degrees with respect to the first transport path. apparatus. In the flow dividing device according to claim 1,
Each of the first transport means and the second transport means
Holes or slits for injecting a gas are provided on the hollow cylindrical wall through which the carrier and the powder are conveyed.
A flow dividing device in which an axis in a conveying direction of the conveying medium and the powder and an axis in a direction in which the gas is ejected from the hole or the slit form an acute angle . In the flow dividing device according to claim 1,
The first transport means unloads the transport medium and the powder from the outlet of the first transport path when the transport medium and the powder are not transported out of the outlet of the first transport path. Create a negative pressure with a smaller absolute value than the absolute value of the negative pressure created when
The second transport means unloads the transport medium and the powder from the outlet of the second transport path when the transport medium and the powder are not transported out of the outlet of the second transport path. A diversion device that produces a negative pressure that has a smaller absolute value than the absolute value of the negative pressure that is generated. A carrier medium, which is a gas, flows as a gas flow, and a hollow cylindrical first carrier path through which the powder is made to flow by the carrier medium, and the carrier medium flows as a gas , and the powder is made to flow by the carrier medium. A hollow cylindrical second transport path, wherein the second transport path is branched from the first transport path at an angle of any of 15 degrees to 165 degrees with respect to the first transport path; A transport path forming unit being formed, a first transport means provided at the outlet of the first transport path, and transporting the transport medium and the powder from the outlet of the first transport path ; A diverting method of a diverting apparatus, comprising: second transport means provided at an outlet of a second transport path for transporting the transport medium and the powder from an outlet of the second transport path ;
When the transport medium and the powder are transported from the position where the first transport path and the second transport path are branched to the outlet side of the first transport path, the first In the conveyance means, a negative pressure is generated in the conveyance medium on the outlet side of the first conveyance path, and the generation of a negative pressure on the conveyance medium by the second conveyance means is suppressed.
When the carrier medium and the powder are transported from the position where the first transport path and the second transport path are branched to the outlet side of the second transport path, the second A flow dividing method comprising the steps of causing a negative pressure to be generated in the conveyance medium on the outlet side of the second conveyance path, and suppressing the generation of negative pressure on the conveyance medium by the first conveyance means in the conveyance means. A carrier medium, which is a gas, flows as a gas flow, and a hollow cylindrical first carrier path through which the powder is made to flow by the carrier medium, and the carrier medium flows as a gas , and the powder is made to flow by the carrier medium. A hollow cylindrical second transport path, wherein the second transport path is branched from the first transport path at an angle of any of 15 degrees to 165 degrees with respect to the first transport path; A transport path forming unit being formed, a first transport means provided at the outlet of the first transport path, and transporting the transport medium and the powder from the outlet of the first transport path ; A computer for controlling a flow dividing device provided at an outlet of a second transport path, the second transport means transporting the transport medium and the powder from the outlet of the second transport path ,
When the transport medium and the powder are transported from the position where the first transport path and the second transport path are branched to the outlet side of the first transport path, the first In the conveyance means, a negative pressure is generated in the conveyance medium on the outlet side of the first conveyance path, and the generation of a negative pressure on the conveyance medium by the second conveyance means is suppressed.
When the carrier medium and the powder are transported from the position where the first transport path and the second transport path are branched to the outlet side of the second transport path, the second A process including a step of causing the transport means to generate a negative pressure in the transport medium at the outlet side of the second transport path and suppressing the generation of a negative pressure on the transport medium by the first transport means Programs that

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