JP2009297623A - Powder discharge unit, powder discharger, powder discharge method, and powder ejector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder discharge unit, a powder discharger, a powder discharge method, and a powder ejector which can easily perform stable discharge of a powder regardless of device posture. <P>SOLUTION: The powder discharge unit includes an accommodation chamber 32 which can accommodate a powder and a gas for discharge, a discharge port 37 which can discharge a powder and a gas for discharge in the accommodation chamber 32, a movable piece 45 which is larger than the opening of the discharge port 37 in the accommodation chamber 32 and vibratably disposed in the vicinity of the discharge port 37, a first gas supply port 41 which can supply a gas for discharge to the discharge port 37 side with respect to the movable piece 45 in the accommodation chamber 32, and a second gas supply port 42 which can supply the gas for discharge to the opposite side of the discharge port 37 with respect to the movable piece 45 in the accommodation chamber 32. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a powder discharge unit for discharging powder, a powder discharge apparatus including the powder discharge unit, a powder discharge method using the powder discharge unit, and a powder discharge unit. The present invention relates to a powder ejection device.

  Conventionally, a large number of apparatuses including a unit for supplying powder are known. For example, powder is stored in a hopper, etc., lowered by gravity and discharged from the lower discharge port, powder is discharged from the hopper, etc., ejected toward the processing target, and collided with the processing surface And equipment for blasting and spraying.

  In recent years, relatively small devices have been studied in various fields. For example, in dental applications, hydroxyapatite (HA), white alumina (WA), silicon carbide (SiC), titanium carbide (TiC), silver An apparatus for processing a target using fine particles such as (Ag) is known. Powder jet deposition (PJD) processing, in which fine particles are mixed with a pressurized fluid, sprayed onto the target, and repeatedly adhered to the surface of the target, or fine particles are mixed with the pressurized fluid, sprayed onto the target, and fine processing By repeating the above, there are devices that use the target surface for abrasive jet machining (AJM) processing and the like.

  As a proposal suitable for a small apparatus, for example, Patent Document 1 below is known. FIG. 3 shows a conceptual diagram of this apparatus. This apparatus includes a discharge gas supply unit 71, a supply pipe 73 through which discharge gas from the discharge gas supply unit 71 flows, and a downstream nozzle inner pipe 75, and the supply pipe 73 and the nozzle inner pipe 75. A powder suction chamber 79 that communicates with each other through an opening 77, a powder storage chamber 81 that is continuous with the powder suction chamber 79, a mixing chamber 83 in which the tip of the nozzle inner tube 75 opens, and a jet into the mixing chamber 83 A gas supply section 85 for supplying gas for supply and an outlet 87 for discharging powder from the mixing chamber 83 are provided.

  In this apparatus, when the discharge gas is supplied from the discharge gas supply unit 71, the discharge gas flows through the supply pipe 73 and the nozzle inner pipe 75. At this time, a negative pressure is generated in the powder suction chamber 79 due to the ejector effect. Due to this negative pressure, the powder descending due to gravity from the powder storage chamber 81 is sucked from the opening 77 and supplied to the nozzle inner tube 75 and discharged into the mixing chamber 83 together with the discharge gas. The mixing chamber 83 is supplied with an ejection gas, and the powder discharged into the mixing chamber 83 is accelerated by the ejection gas and ejected from the ejection port 87.

In such an apparatus, since the powder is sucked by negative pressure and discharged into the mixing chamber 83, the amount of powder discharged can be adjusted by adjusting the discharge gas, and the powder is accelerated by the gas used for discharge. Therefore, the powder ejection speed and the like can be adjusted by adjusting the ejection gas.
JP 2006-224205 A

  However, in devices that use gravity to discharge powder or to eject the discharged powder, powder-specific phenomena such as rat holes and arching bridges are likely to occur. Aggregation occurs due to friction between bodies and the effect of static electricity. Even if the powder is sucked and discharged by a negative pressure, these phenomena cannot be solved sufficiently. For this reason, it has been difficult to stably discharge the powder with the conventional discharge device or the ejection device. Moreover, since the powder is discharged using gravity, when the posture of the apparatus is tilted or reversed, the powder cannot be lowered and used.

  Therefore, in the present invention, it is an object to provide a powder discharge unit, a powder discharge device, or a discharge method that can easily discharge powder stably regardless of the posture of the device, regardless of the posture of the device. Another object of the present invention is to provide a powder ejection device that can easily eject powder stably.

  The powder discharge unit of the present invention that solves the above problems includes a storage chamber capable of storing powder and a discharge gas, a discharge port capable of discharging the powder and the discharge gas in the storage chamber, A movable piece larger than the opening of the discharge port is disposed in the vicinity of the discharge port in the storage chamber, and the discharge gas can be supplied to the discharge port side with respect to the movable piece in the storage chamber. A first gas supply port and a second gas supply port capable of supplying the discharge gas to the movable piece in the housing chamber on the opposite side of the discharge port are provided.

  The powder discharge method of the present invention is a method of discharging the powder by the powder discharge unit according to any one of claims 1 to 6, wherein the discharge gas is the first and second gases. While supplying intermittently from the supply port into the storage chamber, the powder and the discharge gas are discharged from the discharge port while vibrating the movable piece by the discharge gas.

  A powder ejection device according to the present invention is a powder ejection device including the powder ejection device according to any one of claims 7 to 9, wherein the ejection port ejects the powder and the ejection gas. A mixing chamber that can be opened, an ejection gas supply unit that can supply an ejection gas into the mixing chamber, and an ejection port that can eject the powder in the mixing chamber together with the ejection gas and the ejection gas It is characterized by comprising.

  According to the powder discharge unit of the present invention, if the discharge gas is supplied from the first and second gas supply ports to the storage chamber, the powder can be discharged from the discharge port together with the discharge gas. At that time, the first gas supply port capable of supplying the discharge gas to the discharge port side with respect to the movable piece in the accommodation chamber is provided, and the discharge gas can be supplied to the movable piece on the side opposite to the discharge port. Since the second gas supply port is provided, the discharge gas flows in a turbulent state in the storage chamber by supplying the discharge gas from both the discharge port side and the opposite side of the storage chamber. These powders can be fluidized by stirring and dispersing with a discharge gas. In addition, since the movable piece is arranged in the vicinity of the discharge port so as to vibrate, the flow of the discharge gas in the storage chamber can be more disturbed by the vibration piece and can be agitated by vibration.

  Therefore, it is possible to discharge regardless of the posture of the powder discharge unit, there is no phenomenon peculiar to powder such as rat holes and arching bridges, and aggregation of fine particles etc. can be sufficiently prevented and stable powder The body can be discharged.

  According to the powder discharge method of the present invention, the discharge gas is intermittently supplied from the first and second gas supply ports into the storage chamber, and the movable piece is vibrated by the discharge gas while the powder and Since the discharge gas is discharged from the discharge port, the powder can be stably and quantitatively discharged by supplying the discharge gas. In addition, since it is not necessary to provide a complicated mechanical configuration, the configuration of the powder discharge unit can be simplified.

  According to the powder ejection device of the present invention, the powder ejection unit as described above is incorporated, and the ejection chamber is provided with the ejection chamber, and the ejection gas supply section capable of supplying the ejection gas into the mixing chamber And a spout capable of ejecting the powder in the mixing chamber together with the ejection gas and the ejection gas, by adjusting the ejection gas separately from the ejection gas, Apart from that, it is possible to adjust the spraying speed of the powder, and it is easy to use.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  The ejection device 10 of this embodiment is of a size that can be easily operated by being supported by one hand of a user, has a vertically long shape similar to a pen, and includes a vertically long device body 11 and a device body 11. And a lid 12 detachably attached to the rear end. The apparatus main body 11 includes a powder discharge unit 20, a mixing chamber 13 in which powder is discharged from the discharge unit 20, an ejection gas flow path 15 for supplying an ejection gas to the mixing chamber 13, and a tip It is provided with an ejection port 14 that is open to the part and can eject the powder in the mixing chamber 13 together with the ejection gas. The lid body 12 includes introduction parts 16 and 17 for supplying the discharge gas to the discharge unit 20 and an introduction part 18 for supplying the ejection gas to the ejection gas flow path 15.

  The discharge unit 20 includes a main body portion 21 formed in the apparatus main body 11 and a cartridge portion 30 configured to be detachable from the main body portion 21. The main body portion 21 is provided with a housing arrangement portion 22 that opens to the rear end of the apparatus main body 11 and can accommodate the cartridge portion 30. An end support portion 23 that is in contact with and supported is provided. The housing / arrangement unit 22 inserts the cartridge unit 30 so that the front end is brought into contact with the end support 23 and the rear end is supported by the lid 12 so that the cartridge unit 30 is fixed at a predetermined position. It is configured to be arranged.

  The cartridge portion 30 includes a substantially cylindrical tubular portion 31, a porous body 35 that covers the end portion on the distal end side of the tubular portion 31, and an openable / closable end that covers an end portion on the rear end side of the tubular portion 31. The wall 33 is provided with a housing wall 32 in which powder and discharge gas can be housed.

  The porous body 35 has a large number of fine through passages, and serves as a first gas supply port 41 through which the discharge gas can be supplied into the storage chamber 32 by the entire porous body 35. In the approximate center of the porous body 35, there is provided a discharge port 37 having a circular cross section capable of discharging the powder in the storage chamber 32 and the discharge gas. Here, the discharge port 37 is surrounded by the first gas supply port 41.

  On the other hand, the end wall 33 is provided with a columnar portion 39 projecting into the storage chamber 32, and a discharge gas can be supplied into the storage chamber 32 in the vicinity of the end wall 33 of the columnar portion 39. Two gas supply ports 42 are provided.

  In the vicinity of the discharge port 37 in the storage chamber 32 of the cartridge part 30, a movable region 43 is partitioned by the tip of the columnar part 39 and the porous body 35, and the movable piece 45 is movable in the movable region 43. Contained. Here, the movable piece 45 is configured to be able to vibrate by the discharge gas supplied into the storage chamber 32.

  The shape of the movable piece 45 is arbitrary, and a sphere, a legislative body, a regular polyhedron, a plate-like body, a columnar body, and the like can be adopted as appropriate. Here, the movable piece 45 is a sphere. The size of the movable piece 45 is set so that the distance between the movable piece 45 and the inner peripheral surface of the storage chamber 32 is within a range that is larger than the opening of the discharge port.

  In the state where the movable piece 45 is disposed in the movable region 43, the first gas supply port 41 of the porous body 35 is disposed on the discharge port 37 side with respect to the movable piece 45, and the second gas supply port 42. Is disposed on the opposite side of the discharge port 37 with respect to the movable piece 45.

  Further, the ejection device 10 can supply a pressurized gas from a pressurized gas supply source (not shown) by the supply control units 51 and 52 and supply the gas to the introduction units 16 and 17 as a discharge gas. In addition to the portions 55 and 56, there is provided an ejection gas supply portion 57 that can control the pressurized gas from the pressurized gas supply source by the supply controller 53 and supply the pressurized gas to the introduction portion 18 as the ejection gas. . Here, the pressurized gas supply sources of the gas supply units 55, 56, and 57 may be different from each other, or part or all of them may be the same.

  The supply control units 51, 52, and 53 can be configured to be able to control the pressure, flow rate, time, supply period, and the like of the discharge gas or the ejection gas. In this embodiment, the supply control units 51 and 52 are the discharge gas. The discharge gas supply period can be controlled independently of each other. Here, intermittent supply means that the supply amount, pressure, etc., into the storage chamber 32 increase or decrease over time, and does not necessarily have to be zero when decreasing. On the other hand, the supply control unit 53 is configured to continuously supply the ejection gas.

  Next, the usage method of such an ejection apparatus 10 is demonstrated.

  First, the end wall 33 of the cartridge unit 30 is opened, powder is stored in the storage chamber 32, and the cartridge unit 30 is prepared by being closed by the end wall 33. The powder can be appropriately selected according to the purpose of processing. For example, if blasting is performed, abrasive grains or the like may be used, and if spraying is performed, powder that can adhere to the surface to be processed may be used. If the ejection device 10 is used as a dental medical instrument, it may be HA, WA, SiC, TiC, Ag, or the like, for example, fine particles having an average particle diameter of about 1 to 3 μm.

  Preferably, a plurality of cartridge parts 30 are prepared. This is because when the remaining amount of powder decreases during processing, the processing can be continued by replacing the cartridge part 30. In the case of performing different processing, a cartridge unit 30 having different powder to be stored is prepared. Further, the amount of powder contained in each cartridge unit 30 is preferably an amount that can be used up in one processing. For example, in the case of powder having high hygroscopicity such as HA, powder remaining after processing absorbs moisture and is difficult to be discharged.

  Next, the single cartridge part 30 is inserted into the housing arrangement part 22 of the apparatus main body 11, and the front end part of the cartridge part 30 on the discharge port 37 side is in contact with the end support part 23, and the apparatus main body 11 A lid 12 is attached to the body. Thereby, the cartridge part 30 is fixed to a predetermined position of the main body part 21 of the discharge unit 20.

  In this state, the discharge port 37 is in airtight communication with the discharge port extension pipe 25 of the end support portion 23, and the first gas supply port 41 formed by the porous body 35 is airtight to the discharge gas channel 27. Communicated with Further, the discharge gas flow path 27 of the main body portion 21 of the discharge unit 20 is in airtight communication with the flow path 16 a of the introduction section 16, and the second gas supply port 42 of the end wall 33 is connected to the flow path 17 a of the introduction section 17. The ejection gas flow path 15 of the apparatus main body 11 is airtightly communicated with the flow path 18a.

  Furthermore, the discharge gas supply sections 55 and 56 are connected to the discharge gas introduction sections 16 and 17, and the ejection gas supply section 57 is connected to the ejection gas introduction section 18. Thereby, the preparation for processing is completed.

  To start processing, the user operates an operation switch or the like (not shown), for example, with the apparatus main body 11 held and the ejection port 14 facing the surface to be processed. As a result, as shown in FIG. 2, the discharge gases A <b> 1 and A <b> 2 and the ejection gas A <b> 3 are supplied from the discharge gas supply sections 55 and 56 and the ejection gas supply section 57 to the introduction sections 16, 17 and 18. . As the pressurized gas of the discharge gases A1 and A2 and the ejection gas A3, for example, an inert gas such as air, nitrogen, or argon can be used as appropriate.

  When the processing is started, the supply control unit 51 supplies the discharge gas A1 to the introduction unit 16, and the discharge port 37 side from the first gas supply port 41 of the porous body 35 to the movable piece 45 in the storage chamber 32. The discharge gas A1 is supplied to Thereby, the powder existing in the vicinity of the discharge port 37 is separated from the discharge port 37.

  Furthermore, the supply periods are independently controlled by the supply control units 51 and 52, and the discharge gases A 1 and A 2 are intermittently supplied to the first gas supply port 41 and the second gas supply port 42 of the porous body 35. Supply. At this time, the supply period of the first gas supply port 41 may be shifted from the supply period of the second gas supply port 42.

  In the storage chamber 32, the discharge gas A <b> 1 heading from the discharge port 37 side to the end wall 33 side with respect to the movable piece 45, and the end wall 33 side opposite to the discharge port 37 with respect to the movable piece 45. Discharge gas A2 toward the discharge port 37 is intermittently supplied. These discharge gases A1 and A2 flow in the housing chamber 32 in a remarkable turbulent state.

  Due to the turbulent flow of the discharge gases A1 and A2, the powder in the storage chamber 32 is fluidized by being stirred and dispersed by the discharge gas. At the same time, the movable piece 45 is vibrated by the discharge gases A1 and A2. Since the movable piece 45 is disposed in the movable region 43, it always vibrates in the vicinity of the discharge port 37. At this time, the vibration period in the direction along the ejection direction of the movable piece 45 is not particularly limited, but may be 0.5 seconds or less, for example.

  Then, the powder in the storage chamber 32 flows together with the discharge gases A 1 and A 2 and is discharged from the discharge port 37. At this time, the flow is disturbed and further stirred by the vibration of the movable piece 45 in the vicinity of the discharge port 37, and the powder and the discharge gases A 1 and A 2 are discharged from the discharge port 37.

  In addition, since the movable piece 45 is disposed in the vicinity of the discharge port 37, the discharge gas in the storage chamber 32 does not flow into the discharge port 37 in a linear flow, and the powder is unevenly present. However, a large amount of powder is not temporarily discharged from the discharge port 37.

  Simultaneously with the discharge of the powder and the discharge gases A1 and A2 from the discharge port 37, the supply control unit 53 continuously supplies the discharge gas A3 to the discharge gas flow path 15 of the discharge device 10. This ejection gas A3 is supplied to the mixing chamber 13. Powder and discharge gases A1 and A2 are discharged from the discharge port 37 into the mixing chamber 13, and these powder and discharge gases A1 and A2 are ejected from the ejection port 14 together with the ejection gas A3. Here, the powder discharged from the discharge port 37 can be accelerated and ejected by the ejection gas.

  And since the jet nozzle 14 is arranged opposite to the surface to be processed, the powder ejected from the jet nozzle 14 collides with the surface to be processed, thereby realizing a desired processing.

  In this processing, the amount, concentration, speed, and the like of the powder discharged from the jet port 14 are adjusted according to the processing. The amount of powder ejected is, for example, the supply amount and supply period of the discharge gases A1 and A2 from the first gas supply port 41 and the second gas supply port 42 of the porous chamber body 35, and the inside of the storage chamber 32. Adjustment is possible by the distance between the peripheral surface and the movable piece 45, the vibration of the movable piece 45, and the like. The concentration of the powder, the ejection speed, and the like can be adjusted by the supply amount of the ejection gas. By increasing the ejection speed, the powder accumulated on the surface to be processed during processing may be cleaned by wind pressure. As a result, the surface to be processed can always be exposed, and the processing efficiency can be improved.

  When the remaining amount of the powder in the storage portion 32 of the cartridge portion 30 is reduced during processing, the lid 12 of the structural base 11 is opened, the used cartridge portion 30 is extracted from the storage placement portion 22, and the powder If another cartridge part 30 in which is stored is inserted into the storage arrangement part 22 and the lid 12 is closed, the processing can be resumed.

  When another processing is performed using the same ejection device 10 after the processing of the surface to be processed is completed, the cartridge portion 30 mounted so far is extracted from the storage arrangement portion 22, and different powders are stored. It is possible to mount the other cartridge unit 30 and adjust the various supply conditions of the discharge gas A1, A2 and the ejection gas A3 by the supply control units 51, 52, 53 as necessary. Is possible. For example, when using as a dental medical instrument, it is also possible to perform PJD processing using the same ejection device 10 after performing AJM processing.

  After all the processing is completed, the cartridge unit 30 and the ejection device 10 can be cleaned and sterilized. In that case, since each part is operated and ejected by the pressurized gas, there is no complicated shape part due to the mechanical structure, and cleaning and sterilization can be easily performed.

  According to the discharge unit 20 as used in the ejection device 10 described above, the movable piece 45 is provided with the first gas supply port 41 that can supply the discharge gas to the discharge port 37 side with respect to the movable piece 45. On the other hand, since the second gas supply port 42 capable of supplying the discharge gas is provided on the opposite side to the discharge port 37, the discharge gas is supplied from both the discharge port 37 side and the opposite side of the storage chamber 32. Thus, the discharge gas flows in a turbulent state in the storage chamber 32, and the powder in the storage chamber 32 can be fluidized by stirring and dispersing with the discharge gas. Moreover, since the movable piece 45 is arranged in the vicinity of the discharge port 37 so as to vibrate, the flow of the discharge gas in the storage chamber 32 can be disturbed by the vibration piece 45 and can be agitated by vibration.

  Therefore, by discharging the powder from the discharge port 37 with the internal pressure of the discharge gas in the storage chamber 32, it is possible to discharge regardless of the posture of the discharge unit 20, and the discharge unit 20 is tilted or inverted. Can be used. Furthermore, since it is not lowered due to gravity, no powder-specific phenomena such as rat holes and arching bridges occur, and because the inside of the storage chamber 32 is agitated and discharged by the discharge gas, agglomeration of fine particles, etc. Can be sufficiently prevented. Therefore, it is possible to stably discharge the powder regardless of the posture of the discharge unit 20.

  In addition, since the powder is discharged from the discharge port 37 in a state of being sufficiently stirred and dispersed in the discharge gas in the storage chamber 32, the change in the discharge amount with time is small and substantially constant during the discharge period. The amount of powder can be discharged, and quantitative powder discharge is possible.

  Here, since the movable area 43 of the movable piece 45 is provided in the accommodation chamber 32 and the movable piece 45 is movably accommodated in the movable area 43, the first and second gas supply ports 41, When the discharge gas is supplied from 42, the movable piece 45 can freely move and vibrate in the vicinity of the discharge port 37 due to the discharge gas, and the powder discharged from the discharge port 37 by the vibration becomes more uniform. And can be dispersed in the discharge gas.

  Further, since the storage chamber 32 has a cylindrical shape, the discharge port 37 is provided on the end surface on one end side, and the first gas supply port 41 is provided on the end surface. The flow of the discharge gas is opposite to the flow of the powder flowing out from the discharge port 37 and the discharge gas. Therefore, the flow of the powder and the discharge gas can be efficiently disrupted to increase the stirring action, and the powder can be easily dispersed by the discharge gas.

  In particular, since the discharge port 37 is surrounded by the first gas supply port 41, the flow of the powder and the discharge gas toward the discharge port 37 in the storage chamber 32 is not easily biased, and more uniform stirring can be performed. it can.

  In addition, since the first gas supply port 41 is formed of the porous body 35, the discharge gas can be supplied from the entire periphery of the discharge port 37, and stirring can be performed particularly efficiently. .

  Further, since the discharge unit 20 includes a cartridge portion 30 and a main body portion 21 that can be attached to and detached from the cartridge portion 30 at a predetermined position, when the remaining amount of powder in the storage chamber 32 decreases, the cartridge portion By simply exchanging 30, new powder can be supplied, which is easy to use.

  In addition, since the discharge gas supply units 55 and 56 include supply control units 51 and 52 that can intermittently supply the discharge gas to the first and second gas supply ports 41 and 42, respectively. The discharge gas can be intermittently supplied into the storage chamber 32 from the second gas supply ports 41 and 42, and the powder can be easily dispersed in the discharge gas.

  In particular, the supply control units 51 and 52 can independently control the supply period of the discharge gas to the first gas supply port 41 and the supply period of the discharge gas to the second gas supply port 42. Therefore, it is easy to adjust each supply period to an optimum one, and it is easier to disperse the powder in the discharge gas.

  Further, according to the above powder discharge method, the discharge gas is intermittently supplied into the storage chamber 32 from the first and second gas supply ports 41 and 42, and the movable piece 45 is moved by the discharge gas. Since the powder and the discharge gas are discharged from the discharge port 37 while being vibrated, the powder can be stably and quantitatively discharged by supplying the discharge gas, and a mechanically complicated structure is provided. Since it is not necessary to provide, the structure of the discharge unit 20 can be simplified. Therefore, the apparatus can be easily formed in a light weight, and a complicated structure or shape is not formed in a path through which the powder or the discharge gas flows, and cleaning and sterilization are easily performed.

  In such an ejection device 10, the ejection unit 20 as described above is incorporated, the ejection chamber 37 is opened, and the ejection gas that can supply the ejection gas into the mixing chamber 13. Since the supply unit 57 and the spout 14 capable of ejecting the powder in the mixing chamber 13 together with the ejection gas and the ejection gas are provided, the powder can be adjusted by adjusting the ejection gas separately from the ejection gas. Apart from the body discharge amount, etc., it is possible to adjust the ejection speed of the powder, etc., which is easy to use.

  In particular, since the ejection gas supply unit 57 is configured to be able to continuously supply the ejection gas to the mixing chamber 13, the ejection gas can be easily controlled, and the structure of the ejection device 10 can be easily simplified.

  The above embodiment can be appropriately changed within the scope of the present invention. For example, in the above description, the powder ejection unit provided in the powder ejection device has been described, but is not particularly limited. That is, it can be used as an apparatus for supplying powder without providing the apparatus main body 11 indicated by a broken line in FIG. Moreover, it is also possible to provide in the powder supply part in various powder apparatuses other than a powder discharge unit.

  Moreover, although the example of the apparatus used as a small medical instrument similar to writing instruments, such as pens, was demonstrated as the ejection apparatus 10 above, the magnitude | size and application of the ejection apparatus 10 are not limited at all, It can be applied to devices of various sizes in the field. For example, it may be a blasting device, a spraying device, or the like that is installed and operated at a predetermined position, and the present invention can be applied as long as it is a device that ejects various powders by gas.

  Further, in the above description, an example in which the movable piece 45 is freely movable in the movable region 43 has been described. However, the movable piece 45 may be supported by the cylindrical portion 31 or the like of the cartridge portion 30 so as to be able to swing or vibrate. . In that case, the movable region 43 may not be provided, and the cartridge portion 30 may be configured without providing the columnar portion 39 in the storage chamber 32.

  In addition, the movable piece 45 is configured to vibrate by the discharge gas supplied from the porous body 35 and the second gas supply port. However, the movable piece 45 is not particularly limited. You may vibrate by controlling it automatically.

  Furthermore, in the above description, the first gas supply port 41 is configured by the porous body 35. However, the first gas supply port 41 can be adjusted by configuring the porous body 35 to be exchangeable with a different mesh. It may be. Further, instead of the porous body 35, the first gas supply port can be configured by providing one or a plurality of through holes on the end face on one end side of the storage chamber 32. Furthermore, the first gas supply port can be provided on the side surface of the storage chamber 32 on the discharge port 37 side.

It is a schematic sectional drawing of the powder injection apparatus of embodiment of this invention. It is a figure explaining operation | movement of the powder injection apparatus of embodiment of this invention. It is a figure which shows the concept of the conventional powder ejection apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Jet apparatus 11 Structure base 13 Mixing chamber 14 Jet outlet 20 Discharge unit 21 Main body part 22 Housing arrangement part 30 Cartridge part 32 Storage chamber 35 Porous body 37 Discharge port 41 1st gas supply port 42 2nd gas supply port 43 Movable region 45 Movable piece 51, 52, 53 Supply control unit 55, 56 Gas supply unit for ejection 57 Gas supply unit for ejection

Claims (12)

A storage chamber capable of storing powder and discharge gas;
A discharge port capable of discharging the powder and the discharge gas in the storage chamber;
A movable piece that is arranged to be vibrated in the vicinity of the discharge port in the storage chamber and is larger than the opening of the discharge port;
A first gas supply port capable of supplying the discharge gas to the discharge port side with respect to the movable piece in the storage chamber;
A powder discharge unit comprising: a second gas supply port capable of supplying the discharge gas on the opposite side of the movable piece in the storage chamber from the discharge port.   The powder discharge unit according to claim 1, wherein the storage chamber includes a movable region of the movable piece, and the movable piece is movably accommodated in the movable region.   The storage chamber is formed in a cylindrical shape, the discharge port and the first gas supply port are provided on an end surface on one end side of the storage chamber, and the second gas supply port is on the other end side of the storage chamber. The powder discharge unit according to claim 1, wherein the powder discharge unit is provided.   The powder discharge unit according to claim 3, wherein the discharge port is surrounded by the first gas supply port.   The powder discharge unit according to claim 4, wherein the first gas supply port is formed of a porous body.   A cartridge unit integrally including the storage chamber, the discharge port, the first gas supply port, and the second gas supply port; and a main body unit capable of detaching the cartridge unit at a predetermined position. The powder discharge unit according to claim 1, wherein the powder discharge unit is a powder discharge unit.   A powder discharge unit according to any one of claims 1 to 6, and a discharge gas supply unit capable of supplying the discharge gas to the first and second gas supply ports, respectively. Powder discharge device.   The powder according to claim 7, wherein the discharge gas supply unit includes a supply control unit capable of intermittently supplying the discharge gas to the first and second gas supply ports. Discharge device.   The supply control unit is configured to be able to independently control a supply period of the discharge gas to the first gas supply port and a supply period of the discharge gas to the second gas supply port. The powder discharge apparatus according to claim 8, wherein A method of discharging the powder by the powder discharge unit according to any one of claims 1 to 6,
The discharge gas is intermittently supplied from the first and second gas supply ports into the housing chamber, and the movable piece is vibrated by the discharge gas while the powder and the discharge gas are supplied to the storage chamber. A powder discharge method comprising discharging from a discharge port. A powder ejection device comprising the powder ejection device according to any one of claims 7 to 9,
A mixing chamber in which the discharge port is opened to discharge the powder and the discharge gas;
An ejection gas supply unit capable of supplying an ejection gas into the mixing chamber;
A powder jetting apparatus comprising: a jetting outlet capable of jetting the powder in the mixing chamber together with the ejection gas and the jetting gas.   The powder ejection device according to claim 11, wherein the ejection gas supply unit is configured to be able to continuously supply the ejection gas to the mixing chamber.

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