JP5130347B2

JP5130347B2 - Powder processing equipment

Info

Publication number: JP5130347B2
Application number: JP2010280020A
Authority: JP
Inventors: 裕治唐木
Original assignee: HARMO KK
Current assignee: HARMO KK
Priority date: 2010-12-16
Filing date: 2010-12-16
Publication date: 2013-01-30
Anticipated expiration: 2030-12-16
Also published as: CN102553825A; CN102553825B; JP2012125710A

Description

本発明は、粒体と粉体とが含まれる粒状材料から粉体を除去したり、粒体と粉体とが含まれる粒状材料を混合するための粉粒体処理装置に関する。 The present invention relates to a powder processing apparatus for removing powder from a granular material containing particles and powder, or mixing a granular material containing particles and powder.

従来、樹脂粉やゴミ等の粉体と樹脂ペレット等の粒体とが含まれる粒状材料から粉体を除去するための分離装置が知られている（たとえば、特許文献１参照）。特許文献１に記載の分離装置は、上端が閉鎖された円筒部と、円筒部の下端に繋がるように形成される円錐部と、円錐部の下端に繋がるように形成される第２の円筒部とを備えている。また、この分離装置は、円筒部の接線方向と平行に円筒部の下端側に接続された導入管と、円筒部の接線方向と平行に円筒部の上端側に接続された排気管と、排気管に接続された排気用送風機とを備えている。円錐部と第２の円筒部との境界には、スリットが形成され、このスリットは、２次空気吹込室に囲まれている。また、２次空気吹込室には、２次空気用送風機が接続されている。 2. Description of the Related Art Conventionally, a separation device for removing powder from a granular material containing powder such as resin powder and dust and particles such as resin pellets is known (see, for example, Patent Document 1). The separation device described in Patent Document 1 includes a cylindrical portion whose upper end is closed, a conical portion formed so as to be connected to the lower end of the cylindrical portion, and a second cylindrical portion formed so as to be connected to the lower end of the conical portion. And. The separation device also includes an introduction pipe connected to the lower end side of the cylindrical part parallel to the tangential direction of the cylindrical part, an exhaust pipe connected to the upper end side of the cylindrical part parallel to the tangential direction of the cylindrical part, And an exhaust fan connected to the pipe. A slit is formed at the boundary between the conical portion and the second cylindrical portion, and this slit is surrounded by the secondary air blowing chamber. A secondary air blower is connected to the secondary air blowing chamber.

特許文献１に記載の分離装置では、排気用送風機に吸引される空気によって、円筒部内に螺旋状の上昇気流（螺旋状上昇気流）が発生し、２次空気用送風機から排出される圧縮空気によって、円筒部および円錐部の中心部に上昇気流（中心部上昇気流）が発生する。また、この分離装置では、排気用送風機の吸引力によって、粒状材料が導入管から円筒部内に供給される。導入管から円筒部内に粒状材料が供給されると、粒状材料は、その自重で落下する。一方、粒状材料中の粉体の一部は、螺旋状上昇気流によって、円筒部の上端側まで運ばれて、排気管から空気とともに排出される。また、自重で落下する粒状材料のうち、比較的軽いものは、中心部上昇気流によって吹き上げられるため、落下する粒状材料内に残存する粉体の一部は、螺旋状上昇気流および中心部上昇気流によって、円筒部の上端側まで運ばれて、排気管から空気とともに排出される。 In the separation apparatus described in Patent Document 1, a spiral updraft (spiral updraft) is generated in the cylindrical portion by the air sucked into the exhaust blower, and the compressed air discharged from the secondary air blower Ascending air current (central ascending air current) is generated at the center of the cylindrical portion and the conical portion. Further, in this separation device, the granular material is supplied from the introduction pipe into the cylindrical portion by the suction force of the exhaust fan. When the granular material is supplied from the introduction pipe into the cylindrical portion, the granular material falls by its own weight. On the other hand, a part of the powder in the granular material is carried to the upper end side of the cylindrical portion by the spiral updraft and discharged together with air from the exhaust pipe. Further, among the granular materials that fall under their own weight, relatively light ones are blown up by the center ascending air current, so that some of the powder remaining in the falling granular material is part of the spiral ascending air current and the center ascending air current. Is carried to the upper end side of the cylindrical portion, and is discharged from the exhaust pipe together with air.

特許第３７４８５５７号公報Japanese Patent No. 3748557

特許文献１に記載の分離装置では、２次空気用送風機から排出される圧縮空気によって中心部上昇気流が発生するため、中心部上昇気流の流速が速くなりやすい。そのため、この分離装置では、自重で落下する粒状材料が中心部上昇気流によって吹き上げられやすい。すなわち、この分離装置では、中心部上昇気流によって繰り返し吹き上げられる粒状材料が多くなる。したがって、この分離装置では、自重で落下する粒状材料内に残存する粉体が粒体から完全に分離されて除去されやすくなり、その結果、この分離装置を用いて、粒体と粉体とが含まれる粒状材料を混合（撹拌）することが困難である。 In the separation apparatus described in Patent Document 1, since the center ascending airflow is generated by the compressed air discharged from the secondary air blower, the flow rate of the center ascending airflow tends to be high. Therefore, in this separation apparatus, the granular material falling by its own weight is likely to be blown up by the center ascending current. That is, in this separation apparatus, the granular material repeatedly blown up by the center-part rising airflow increases. Therefore, in this separation device, the powder remaining in the granular material falling by its own weight is easily separated from the particles and easily removed, and as a result, using this separation device, the particles and the powder are separated. It is difficult to mix (stir) the granular material contained.

また、特許文献１に記載の分離装置では、自重で落下する粒状材料が、中心部上昇気流によって吹き上げられやすいため、円筒部の高さを高くしないと、粉体と分離されて第２の円筒部の下側へ排出されるべき重さ（大きさ）の粒体も、螺旋状上昇気流および中心部上昇気流によって、円筒部の上端側まで運ばれて排気管から空気とともに排出されてしまう。 Further, in the separation apparatus described in Patent Document 1, since the granular material that falls by its own weight is easily blown up by the air flow rising in the center portion, the second cylinder is separated from the powder unless the height of the cylindrical portion is increased. Granules having a weight (size) to be discharged to the lower side of the part are also carried to the upper end side of the cylindrical part by the spiral updraft and the central part updraft and are discharged together with air from the exhaust pipe.

そこで、本発明の課題は、粒体と粉体とが含まれる粒状材料から粉体を除去すること、および、粒状材料を混合することが可能な粉粒体処理装置を提供することにある。また、本発明の課題は、ホッパーの高さが比較的低くてもホッパーの下側へ排出されるべき重さ（大きさ）の粒体がホッパーの上端側から排出されるのを防止することが可能な粉粒体処理装置を提供することにある。 Then, the subject of this invention is providing the granular material processing apparatus which can remove a powder from the granular material containing a granular material and powder, and can mix a granular material. Another object of the present invention is to prevent particles having a weight (size) to be discharged to the lower side of the hopper from being discharged from the upper end side of the hopper even if the height of the hopper is relatively low. It is in providing the granular material processing apparatus which can be.

上記の課題を解決するため、本発明の粉粒体処理装置は、円筒状に形成される円筒部と円筒部の上端を塞ぐための天板とを有するホッパーと、上下方向における円筒部の中間位置に円筒部の接線方向と略平行に接続され、粒体と粉体とが含まれる粒状材料がホッパー内へ供給される供給管と、円筒部の上端側または天板に接続され、ホッパー内の空気が排出される排気管と、ホッパー内の空気を吸引するために排気管に接続される吸引手段と、ホッパーの下側に配置され、ホッパーの下端側からホッパー内へ供給される外気が吸入される第１吸入管と、供給管から供給される前の粒状材料が貯留される材料貯留部と、供給管と材料貯留部との間に配置され、供給管からホッパー内へ供給される外気が吸入される第２吸入管と、を備え、材料貯留部からホッパー内へ粒状材料が供給された後に、吸引手段の吸引力で第１吸入管および第２吸入管から、または、第１吸入管からホッパー内へ外気が供給される外気供給状態に切り替わることを特徴とする。 In order to solve the above-described problems, a powder particle processing apparatus according to the present invention includes a hopper having a cylindrical portion formed in a cylindrical shape and a top plate for closing the upper end of the cylindrical portion, and an intermediate portion of the cylindrical portion in the vertical direction. Connected to the position of the cylindrical portion at a position substantially parallel to the tangential direction of the cylindrical portion, the granular material containing the particles and powder is supplied into the hopper, and connected to the upper end side of the cylindrical portion or the top plate. The exhaust pipe from which the air in the hopper is discharged, the suction means connected to the exhaust pipe for sucking the air in the hopper, and the outside air that is disposed below the hopper and is supplied into the hopper from the lower end side of the hopper The first suction pipe to be sucked in, the material storage part in which the granular material before being supplied from the supply pipe is stored, and the supply pipe and the material storage part are arranged and supplied from the supply pipe into the hopper. includes a second suction pipe outside air is sucked, the material savings After the particulate material is supplied from the section into the hopper, the state is switched to the outside air supply state in which outside air is supplied from the first suction pipe and the second suction pipe or from the first suction pipe into the hopper by the suction force of the suction means. It is characterized by that.

本発明の粉粒体処理装置では、材料貯留部からホッパー内へ粒状材料が供給された後に、吸引手段の吸引力で第１吸入管および第２吸入管から、または、第１吸入管からホッパー内へ外気が供給される外気供給状態に切り替わる。そのため、材料貯留部からホッパー内へ粒状材料が供給された後に、第１吸入管および第２吸入管からホッパー内に外気を供給すれば（すなわち、ホッパーの下端側からホッパー内に外気を供給するとともに、供給管から円筒部の接線方向に外気を供給すれば）、第１吸入管から供給される外気でホッパーの中心部に生じる上昇気流（中心部上昇気流）と、円筒部に生じる螺旋状の上昇気流（螺旋状上昇気流）とによって、粒状材料に含まれる粉体を分離して、円筒部の上端側に接続される排気管から粉体を除去することが可能になる。 In the granular material processing apparatus according to the present invention , after the granular material is supplied from the material reservoir into the hopper, the suction force of the suction means causes the suction from the first suction pipe and the second suction pipe, or from the first suction pipe to the hopper. It switches to the outside air supply state in which outside air is supplied inside. For this reason, after the granular material is supplied from the material storage portion into the hopper, if outside air is supplied into the hopper from the first suction pipe and the second suction pipe (that is, outside air is supplied into the hopper from the lower end side of the hopper). In addition, if the outside air is supplied from the supply pipe in the tangential direction of the cylindrical portion), the ascending air current (center ascending air current) generated in the center of the hopper by the outside air supplied from the first suction pipe and the spiral shape generated in the cylindrical portion It is possible to separate the powder contained in the particulate material and remove the powder from the exhaust pipe connected to the upper end side of the cylindrical portion by the updraft (spiral updraft) .

また、本発明では、吸引手段の吸引力で第１吸入管から供給される外気によって、中心部上昇気流を発生させることが可能であるため、圧縮空気によって、中心部上昇気流を発生させる場合と比較して、中心部上昇気流の流速を遅くすることが可能になる。したがって、本発明では、自重で落下する粒状材料が中心部上昇気流によって繰り返しで吹き上げられるのを抑制することが可能になり、その結果、自重で落下する粒状材料内に残存する粉体が粒体から完全に分離されて除去されるのを抑制することが可能になる。したがって、本発明では、材料貯留部からホッパー内へ粒状材料が供給された後に、第１吸入管から、または、第１吸入管および第２吸入管からホッパー内に外気を供給することで、中心部上昇気流を発生させれば、粒状材料を混合することが可能になる。 Further, in the present invention, since the center ascending air current can be generated by the outside air supplied from the first suction pipe by the suction force of the suction means, the center ascending air current is generated by the compressed air. In comparison, it becomes possible to slow down the flow rate of the center ascending air current. Therefore, in the present invention, it is possible to suppress the granular material falling under its own weight from being repeatedly blown up by the ascending airflow at the center, and as a result, the powder remaining in the granular material falling under its own weight is granulated. It is possible to suppress the separation and removal completely from the substrate. Therefore, in the present invention, after the granular material is supplied from the material storage portion into the hopper , the outside air is supplied into the hopper from the first suction pipe or from the first suction pipe and the second suction pipe. If a part updraft is generated, it becomes possible to mix granular materials.

さらに、本発明では、中心部上昇気流の流速を遅くすることが可能になるため、自重で落下する粒状材料の中心部上昇気流による吹き上げ高さを抑制することが可能になる。したがって、本発明では、ホッパーの高さが比較的低くても、ホッパーの下側へ排出したい重さ（大きさ）の粒体が螺旋状上昇気流等によって円筒部の上端側に接続される排気管から排出されるのを防止することが可能になる。 Furthermore, in the present invention, since the flow rate of the center updraft can be slowed, it is possible to suppress the blowing height of the granular material falling by its own weight due to the center upflow. Therefore, according to the present invention, even if the height of the hopper is relatively low, the granular material having a weight (size) to be discharged to the lower side of the hopper is connected to the upper end side of the cylindrical portion by a spiral updraft or the like. It is possible to prevent discharge from the pipe.

また、本発明では、１台の吸引手段によって、中心部上昇気流と螺旋状上昇気流とを発生させることが可能になるため、粉粒体処理装置の構成を簡素化することが可能になる。 Moreover, in this invention, since it becomes possible to generate | occur | produce a center part updraft and a spiral updraft by one suction means, it becomes possible to simplify the structure of a granular material processing apparatus.

本発明において、粉粒体処理装置は、供給管と材料貯留部との間に配置され、供給管が接続される排出口と材料貯留部が接続される材料吸入口と第２吸入管が接続される外気吸入口とを有する切替弁を備え、切替弁は、外気吸入口を閉鎖するとともに排出口と材料吸入口とを連通させて材料供給状態にする材料供給ポジションと、材料吸入口を閉鎖するとともに排出口と外気吸入口とを連通させて外気供給状態にする外気供給ポジションとに切替可能となっていることが好ましい。このように構成すると、材料供給ポジションから外気供給ポジションへ切替弁を切り替えれば、第２吸入管から吸入される外気によって、切替弁とホッパーとの間にある粒状材料をホッパー内へ供給することが可能になる。すなわち、このように構成すると、切替弁を切り替えることで、切替弁が材料供給ポジションにあるときに材料吸入口を通過した粒状材料の全てをホッパー内へ供給することが可能になる。したがって、切替弁の制御によって、ホッパー内へ供給される粒状材料の量を精度良く制御することが可能になる。また、このように構成すると、材料供給ポジションから外気供給ポジションへ切替弁を切り替えれば、ホッパー内へ粒状材料が供給された後も第２吸入管から外気をホッパー内へ供給して螺旋状上昇気流を発生させることが可能になるため、粉粒体処理装置の制御を簡素化することが可能になる。さらに、このように構成すると、材料貯留部を開閉する開閉弁と第２吸入管を開閉する開閉弁とが別個に設けられている場合と比較して、粉粒体処理装置の構成を簡素化することが可能になる。 In the present invention, the powder processing apparatus is disposed between the supply pipe and the material storage unit, and the discharge port to which the supply pipe is connected, the material suction port to which the material storage unit is connected, and the second suction pipe are connected. The switching valve has a material supply position that closes the outside air suction port and connects the discharge port and the material suction port to a material supply state, and closes the material suction port. In addition, it is preferable to be able to switch to an outside air supply position in which the discharge port and the outside air suction port are communicated with each other so as to be in the outside air supply state. With this configuration, when the switching valve is switched from the material supply position to the outside air supply position, the particulate material existing between the switching valve and the hopper can be supplied into the hopper by the outside air sucked from the second suction pipe. It becomes possible. That is, with this configuration, by switching the switching valve, it is possible to supply all of the granular material that has passed through the material suction port when the switching valve is in the material supply position into the hopper. Therefore, the amount of the granular material supplied into the hopper can be accurately controlled by controlling the switching valve. Further, with this configuration, when the switching valve is switched from the material supply position to the outside air supply position, the outside air is supplied from the second suction pipe into the hopper even after the particulate material is supplied into the hopper, and the spiral updraft is supplied. Therefore, it is possible to simplify the control of the granular material processing apparatus. Further, with this configuration, the configuration of the powder processing apparatus is simplified as compared with the case where the on-off valve that opens and closes the material reservoir and the on-off valve that opens and closes the second suction pipe are provided separately. It becomes possible to do.

本発明において、粉粒体処理装置は、第１吸入管を開閉する開閉弁を備え、切替弁が材料供給ポジションにあるときに、開閉弁が第１吸入管を閉鎖して、吸引手段の吸引力で材料貯留部からホッパー内へ粒状材料が供給され、切替弁が外気供給ポジションにあるときに、開閉弁が第１吸入管を開放して、吸引手段の吸引力で第１吸入管および第２吸入管からホッパー内へ外気が供給されることが好ましい。このように構成すると、螺旋状上昇気流に加えて、中心部上昇気流がホッパー内に発生するため、自重で落下する粒状材料が中心部上昇気流によって吹き上げられる。したがって、粒状材料から粉体を除去したい場合には、粒状材料内に残存する粉体を粒体から効果的に分離して、排気管から排出することが可能になる。 In the present invention, the granular material processing apparatus includes an opening / closing valve that opens and closes the first suction pipe, and when the switching valve is in the material supply position, the opening / closing valve closes the first suction pipe and sucks the suction means. When the granular material is supplied from the material reservoir to the hopper by force and the switching valve is in the outside air supply position, the on-off valve opens the first suction pipe and the first suction pipe and the first suction pipe by the suction force of the suction means. 2 It is preferable that outside air is supplied from the suction pipe into the hopper. If comprised in this way, in addition to a spiral updraft, since a center part updraft will generate | occur | produce in a hopper, the granular material which falls with dead weight will be blown up by center part updraft. Therefore, when it is desired to remove the powder from the granular material, the powder remaining in the granular material can be effectively separated from the granules and discharged from the exhaust pipe.

本発明において、粉粒体処理装置は、円筒部の内部の上端側であって、かつ、排気管よりも下側に配置される内部配置部材を備え、円筒部の内周面と内部配置部材の外周端との間に、粉体が通過可能な隙間が形成されていることが好ましい。このように構成すると、天板と内部配置部材との間の空間の容積を小さくして、この空間における吸引手段の吸引圧の低下を防止することが可能になる。また、円筒部の内周面と内部配置部材の外周面との隙間を小さくして、この隙間における吸引手段の吸引圧の低下を防止することが可能になる。したがって、排気管の内径に比べて円筒部の内径が大きくなっていても、天板と内部配置部材との間の空間、および、円筒部の内周面と内部配置部材の外周面との隙間における吸引手段の吸引圧の低下を防止することが可能になる。その結果、ホッパー内の空気を吸引する吸引手段の吸引力が比較的小さくても、螺旋状上昇気流等によって円筒部の上端側まで運ばれてきた粉体を排気管から適切に排出することが可能になる。 In the present invention, the granular material processing apparatus includes an internal arrangement member disposed on the upper end side inside the cylindrical portion and below the exhaust pipe, and the inner peripheral surface of the cylindrical portion and the internal arrangement member It is preferable that a gap through which the powder can pass is formed between the outer peripheral end of each of the two. If comprised in this way, it will become possible to make small the volume of the space between a top plate and an internal arrangement | positioning member, and to prevent the fall of the suction pressure of the suction means in this space. Further, it is possible to reduce the gap between the inner peripheral surface of the cylindrical portion and the outer peripheral surface of the internal arrangement member, and to prevent the suction pressure of the suction means in this gap from being lowered. Therefore, even if the inner diameter of the cylindrical portion is larger than the inner diameter of the exhaust pipe, the space between the top plate and the internal arrangement member and the gap between the inner peripheral surface of the cylindrical portion and the outer peripheral surface of the internal arrangement member It is possible to prevent a decrease in the suction pressure of the suction means. As a result, even if the suction force of the suction means for sucking the air in the hopper is relatively small, the powder carried to the upper end side of the cylindrical portion by the spiral updraft can be appropriately discharged from the exhaust pipe. It becomes possible.

また、このように構成すると、内部配置部材の位置を上下動させれば、天板と内部配置部材との間の空間の容積を変えることが可能になり、この空間の容積を変えることで、この空間での吸引圧を変えることが可能になる。したがって、この空間での吸引圧を変えることで、排気管から排出される粉体の重さ（大きさ）を変えることが可能になる。また、この空間の吸引圧を変えることで、排気管から粉体を排出させないことも可能になる。すなわち、このように構成すると、円筒部の形状を変えずに内部配置部材の位置を上下動させるといった比較的簡易な構成で、排気管から排出される粉体の重さ（大きさ）を変えること、および、排気管から粉体を排出させないようにすることが可能になる。 Further, if configured in this way, if the position of the internal arrangement member is moved up and down, the volume of the space between the top plate and the internal arrangement member can be changed, and by changing the volume of this space, The suction pressure in this space can be changed. Therefore, the weight (size) of the powder discharged from the exhaust pipe can be changed by changing the suction pressure in this space. Further, by changing the suction pressure in this space, it is possible to prevent the powder from being discharged from the exhaust pipe. That is, with this configuration, the weight (size) of the powder discharged from the exhaust pipe is changed with a relatively simple configuration in which the position of the internal arrangement member is moved up and down without changing the shape of the cylindrical portion. In addition, it is possible to prevent the powder from being discharged from the exhaust pipe.

なお、上述の特許文献１に記載の分離装置では、円筒部の接線方向と平行に円筒部の上端側に排気管が接続されているため、排気管を上下動させることで、排気管から排出される粉体の重さ（大きさ）を変えること、および、排気管から粉体を排出させないようにすることも可能である。しかしながら、この分離装置では、円筒部の側面に形成された開口に排気管が接続されているため、排気管を上下動させるためには、円筒部の側面に形成される開口の位置を変えなければならず、容易に、排気管を上下動させることはできない。すなわち、この分離装置では、排気管から排出される粉体の重さ（大きさ）を変えること、および、排気管から粉体を排出させないようにすることは、容易にはできない。 In the separation device described in Patent Document 1 described above, the exhaust pipe is connected to the upper end side of the cylindrical portion parallel to the tangential direction of the cylindrical portion. It is possible to change the weight (size) of the powder to be discharged and not to discharge the powder from the exhaust pipe. However, in this separation device, the exhaust pipe is connected to the opening formed on the side surface of the cylindrical portion. Therefore, in order to move the exhaust pipe up and down, the position of the opening formed on the side surface of the cylindrical portion must be changed. The exhaust pipe cannot be moved up and down easily. That is, with this separation device, it is not easy to change the weight (size) of the powder discharged from the exhaust pipe and to prevent the powder from being discharged from the exhaust pipe.

本発明において、内部配置部材は、略円板状に形成されるとともに、その中心が円筒部の中心と略一致するように配置され、内部配置部材の外径は、円筒部の内径よりも小さくなっており、円筒部の内周面と内部配置部材の外周端との間に、円環状の隙間が形成されていることが好ましい。このように構成すると、螺旋状上昇気流等によって円筒部の上端側まで運ばれてきた粉体を内部配置部材の外周側の全域で内部配置部材の上側へ吸引することが可能になる。したがって、円筒部の上端側まで運ばれてきた粉体を排気管から効果的に排出することが可能になる。 In the present invention, the internal arrangement member is formed in a substantially disc shape, and is arranged so that the center thereof substantially coincides with the center of the cylindrical portion. The outer diameter of the internal arrangement member is smaller than the inner diameter of the cylindrical portion. It is preferable that an annular gap is formed between the inner peripheral surface of the cylindrical portion and the outer peripheral end of the internal arrangement member. If comprised in this way, it will become possible to attract | suck the powder conveyed to the upper end side of the cylindrical part by the spiral updraft etc. to the upper side of an internal arrangement member in the whole area of the outer peripheral side of an internal arrangement member. Therefore, the powder that has been carried to the upper end side of the cylindrical portion can be effectively discharged from the exhaust pipe.

本発明において、粉粒体処理装置は、円形状に形成されるとともに、円筒部の内部の上端側であって、かつ、排気管よりも下側に配置される内部配置部材を備え、内部配置部材の外径は、円筒部の内径と略等しくなっており、内部配置部材の外周側部分には、粉体が通過可能な貫通孔が形成されていること、または、内部配置部材の外周端には、粉体が通過可能な切欠部が径方向内側に窪むように形成されていることが好ましい。このように構成すると、天板と内部配置部材との間の空間の容積を小さくすることが可能になり、この空間における吸引手段の吸引圧の低下を防止することが可能になる。また、貫通孔または切欠部における吸引手段の吸引圧の低下を防止することが可能になる。したがって、排気管の内径に比べて円筒部の内径が大きくなっていても、天板と内部配置部材との間の空間、および、貫通孔または切欠部における吸引手段の吸引圧の低下を防止することが可能になる。その結果、ホッパー内の空気を吸引する吸引手段の吸引力が比較的小さくても、螺旋状上昇気流等によって円筒部の上端側まで運ばれてきた粉体を排気管から適切に排出することが可能になる。 In the present invention, the granular material processing apparatus is formed in a circular shape and includes an internal arrangement member arranged on the upper end side inside the cylindrical portion and below the exhaust pipe, and the internal arrangement member The outer diameter of the member is substantially equal to the inner diameter of the cylindrical portion, and a through-hole through which powder can pass is formed in the outer peripheral side portion of the internal arrangement member, or the outer peripheral end of the internal arrangement member It is preferable that the cutout portion through which the powder can pass is formed so as to be recessed inward in the radial direction. If comprised in this way, it will become possible to make small the volume of the space between a top plate and an internal arrangement | positioning member, and it will become possible to prevent the fall of the suction pressure of the suction means in this space. In addition, it is possible to prevent a reduction in the suction pressure of the suction means in the through hole or notch. Therefore, even if the inner diameter of the cylindrical portion is larger than the inner diameter of the exhaust pipe, a reduction in the suction pressure of the suction means in the space between the top plate and the internal arrangement member and the through hole or notch is prevented. It becomes possible. As a result, even if the suction force of the suction means for sucking the air in the hopper is relatively small, the powder carried to the upper end side of the cylindrical portion by the spiral updraft can be appropriately discharged from the exhaust pipe. It becomes possible.

本発明において、排気管は、円筒部の天板の中心に接続されていることが好ましい。このように構成すると、排気管が円筒部の上端側の側面に接続されている場合や天板の外周側部分に接続されている場合と比較して、円筒部および天板の構造を比較的簡素化することが可能になる。 In the present invention, the exhaust pipe is preferably connected to the center of the top plate of the cylindrical portion. With this configuration, the structure of the cylindrical portion and the top plate is relatively less than when the exhaust pipe is connected to the side surface on the upper end side of the cylindrical portion and the case where the exhaust pipe is connected to the outer peripheral side portion of the top plate. It becomes possible to simplify.

以上のように、本発明の粉粒体処理装置では、粒体と粉体とが含まれる粒状材料から粉体を除去すること、および、粒状材料を混合することが可能になる。また、本発明の粉粒体処理装置では、ホッパーの高さが比較的低くてもホッパーの下側へ排出されるべき重さ（大きさ）の粒体がホッパーの上端側から排出されるのを防止することが可能になる。 As mentioned above, in the granular material processing apparatus of this invention, it becomes possible to remove powder from the granular material containing a granular material and powder, and to mix a granular material. Moreover, in the granular material processing apparatus of the present invention, even if the hopper is relatively low in height, particles having a weight (size) to be discharged to the lower side of the hopper are discharged from the upper end side of the hopper. Can be prevented.

本発明の実施の形態にかかる粉粒体処理装置の概略構成を示す概略図である。It is the schematic which shows schematic structure of the granular material processing apparatus concerning embodiment of this invention. 図１に示すホッパーおよびその周辺部分の斜視図である。It is a perspective view of the hopper shown in FIG. 1, and its peripheral part. 本発明の他の実施の形態にかかる内部配置部材の平面図である。It is a top view of the internal arrangement member concerning other embodiments of the present invention.

以下、図面を参照しながら、本発明の実施の形態を説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（粉粒体処理装置の構成）
図１は、本発明の実施の形態にかかる粉粒体処理装置１の概略構成を示す概略図である。図２は、図１に示すホッパー２およびその周辺部分の斜視図である。 (Configuration of powder processing equipment)
FIG. 1 is a schematic diagram showing a schematic configuration of a granular material processing apparatus 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the hopper 2 shown in FIG. 1 and its peripheral portion.

本形態の粉粒体処理装置１は、樹脂粉等の粉体と樹脂ペレット等の粒体とが含まれる粒状材料から粉体を除去したり、樹脂粉等の粉体と樹脂ペレット等の粒体とが含まれる粒状材料を混合するための装置である。この粉粒体処理装置１は、内部へ粒状材料が供給される中空状のホッパー２と、ホッパー２へ供給される前の粒状材料が貯留される材料貯留部としての材料タンク３と、ホッパー２内の空気を吸引する吸引手段としての吸引ポンプ４とを備えている。 The granular material processing apparatus 1 according to the present embodiment removes powder from a granular material containing powder such as resin powder and granular material such as resin pellets, or powder such as resin powder and particles such as resin pellets. It is an apparatus for mixing particulate material containing the body. This granular material processing apparatus 1 includes a hollow hopper 2 into which a granular material is supplied, a material tank 3 as a material storage unit in which the granular material before being supplied to the hopper 2 is stored, and a hopper 2. And a suction pump 4 as suction means for sucking the air inside.

ホッパー２は、円筒状に形成される円筒部２ａと、円錐筒状に形成される円錐部２ｂとを備えており、円筒部２ａの下端に円錐部２ｂが繋がっている。また、ホッパー２は、円筒部２ａの上端を塞ぐための天板としての上面蓋部２ｃを備えている。上面蓋部２ｃは、略円板状に形成されており、円筒部２ａの上端に着脱可能に取り付けられている。 The hopper 2 includes a cylindrical portion 2a formed in a cylindrical shape and a conical portion 2b formed in a conical cylindrical shape, and the conical portion 2b is connected to the lower end of the cylindrical portion 2a. Moreover, the hopper 2 is provided with the upper surface cover part 2c as a top plate for plugging up the upper end of the cylindrical part 2a. The upper surface lid portion 2c is formed in a substantially disc shape and is detachably attached to the upper end of the cylindrical portion 2a.

上下方向における円筒部２ａの中間位置には、供給管６が接続されており、供給管６からホッパー２内へ粒状材料が供給される。供給管６は、円筒部２ａの接線方向と略平行に円筒部２ａに接続されている。上面蓋部２ｃの中心には、排気管７が接続されており、排気管７からホッパー２内の空気が排出される。円錐部２ｂの下端には、粒状材料が排出される排出口２ｄが形成されている。 A supply pipe 6 is connected to an intermediate position of the cylindrical portion 2 a in the vertical direction, and the granular material is supplied from the supply pipe 6 into the hopper 2. The supply pipe 6 is connected to the cylindrical portion 2a substantially parallel to the tangential direction of the cylindrical portion 2a. An exhaust pipe 7 is connected to the center of the upper surface lid 2c, and air in the hopper 2 is discharged from the exhaust pipe 7. A discharge port 2d through which the granular material is discharged is formed at the lower end of the conical portion 2b.

円筒部２ａの内部の上端側には、内部配置部材８が配置されている。内部配置部材８は、円板状に形成されており、上面蓋部２ｃの下面に固定されている。具体的には、内部配置部材８は、上面蓋部２ｃの下面と内部配置部材８の上面との間に空間が形成されるように、スペーサを介して上面蓋部２ｃの下面に固定されている。スペーサは、たとえば、内部配置部材８に固定されており、スペーサ付きの内部配置部材８がネジ等によって上面蓋部２ｃに取り付けられている。 An internal arrangement member 8 is arranged on the upper end side inside the cylindrical portion 2a. The internal arrangement member 8 is formed in a disc shape and is fixed to the lower surface of the upper surface lid portion 2c. Specifically, the internal arrangement member 8 is fixed to the lower surface of the upper surface lid portion 2c via a spacer so that a space is formed between the lower surface of the upper surface lid portion 2c and the upper surface of the internal arrangement member 8. Yes. The spacer is fixed to, for example, the internal arrangement member 8, and the internal arrangement member 8 with the spacer is attached to the upper surface lid 2c with screws or the like.

また、内部配置部材８は、円筒部２ａの中心と内部配置部材８の中心とが略一致するように、上面蓋部２ｃに固定されている。内部配置部材８の外径は、円筒部２ａの内径よりも小さくなっており、円筒部２ａの内周面と内部配置部材８の外周端との間には、粒状材料から除去したい大きさの粉体が通過可能な隙間Ｓが形成されている。すなわち、円筒部２ａの内周面と内部配置部材８の外周端との間には、径方向の幅が略一定な円環状の隙間Ｓが形成されている。 Further, the internal arrangement member 8 is fixed to the upper surface lid portion 2c so that the center of the cylindrical portion 2a and the center of the internal arrangement member 8 substantially coincide. The outer diameter of the internal arrangement member 8 is smaller than the inner diameter of the cylindrical portion 2a. Between the inner peripheral surface of the cylindrical portion 2a and the outer peripheral end of the internal arrangement member 8, there is a size that is desired to be removed from the granular material. A gap S through which the powder can pass is formed. That is, an annular gap S having a substantially constant radial width is formed between the inner peripheral surface of the cylindrical portion 2 a and the outer peripheral end of the internal arrangement member 8.

ホッパー２の下端には、排出口２ｄから排出される粒状材料が一時的に溜まる筒状の材料排出部９が接続されている。材料排出部９の下端は、成型機等の被供給部１０に接続されている。材料排出部９の下端側には、図示を省略するシャッターが配置されており、シャッターが閉じているときには、材料排出部９に粒状材料が一時的に貯留され、シャッターが開くと、材料排出部９から被供給部１０に粒状材料が供給される。すなわち、ホッパー２から排出される粒状材料は、材料排出部９を通過して被供給部１０に供給される。材料排出部９の上端側は、ガラス管９ａとなっている。ガラス管９ａの外側には、材料排出部９内の粒状材料の量を検出するためのセンサ１１が配置されている。 Connected to the lower end of the hopper 2 is a cylindrical material discharge portion 9 in which the particulate material discharged from the discharge port 2d is temporarily accumulated. The lower end of the material discharge part 9 is connected to the supplied part 10 such as a molding machine. A shutter (not shown) is disposed on the lower end side of the material discharge unit 9. When the shutter is closed, the granular material is temporarily stored in the material discharge unit 9, and when the shutter is opened, the material discharge unit The granular material is supplied from 9 to the supplied part 10. That is, the particulate material discharged from the hopper 2 passes through the material discharge unit 9 and is supplied to the supply target unit 10. The upper end side of the material discharge part 9 is a glass tube 9a. A sensor 11 for detecting the amount of granular material in the material discharge unit 9 is disposed outside the glass tube 9a.

材料排出部９の側面には、排出口２ｄからホッパー２内へ供給される外気が吸入される第１吸入管１２の一端が接続されている。第１吸入管１２の一端は、材料排出部９の側面の、センサ１１よりも下側でかつシャッターよりも上側に接続されている。第１吸入管１２の他端には、エアフィルタ１３が取り付けられている。第１吸入管１２の途中には、第１吸入管１２を開閉する開閉弁１４が配置されている。開閉弁１４は、電動弁あるいはエア作動弁等のアクチュエータによって作動する自動弁である。また、第１吸入管１２の途中には、排出口２ｄからホッパー２内へ供給される外気の量を調整するための調整弁（図示省略）が配置されている。この調整弁は、たとえば、開度の調整が可能な手動弁である。 One end of a first suction pipe 12 through which the outside air supplied from the discharge port 2d into the hopper 2 is sucked is connected to the side surface of the material discharge unit 9. One end of the first suction pipe 12 is connected to the side of the material discharge unit 9 below the sensor 11 and above the shutter. An air filter 13 is attached to the other end of the first suction pipe 12. An opening / closing valve 14 for opening and closing the first suction pipe 12 is disposed in the middle of the first suction pipe 12. The on-off valve 14 is an automatic valve that is operated by an actuator such as an electric valve or an air operated valve. An adjustment valve (not shown) for adjusting the amount of outside air supplied from the discharge port 2d into the hopper 2 is disposed in the middle of the first suction pipe 12. This adjustment valve is, for example, a manual valve capable of adjusting the opening degree.

ホッパー２と材料タンク３との間には、切替弁１６が配置されている。切替弁１６は、電動弁あるいはエア作動弁等のアクチュエータによって作動する自動弁である。また、切替弁１６は、排出口１６ａと、材料吸入口１６ｂと、外気吸入口１６ｃとを有する三方弁である。排出口１６ａには、所定の配管を介して供給管６が接続され、材料吸入口１６ｂには、所定の配管を介して材料タンク３が接続されている。また、外気吸入口１６ｃには、供給管６からホッパー２内へ供給される外気が吸入される第２吸入管１７の一端が接続されている。第２吸入管１７の他端には、エアフィルタ１８が取り付けられている。 A switching valve 16 is arranged between the hopper 2 and the material tank 3. The switching valve 16 is an automatic valve that is operated by an actuator such as an electric valve or an air operated valve. The switching valve 16 is a three-way valve having a discharge port 16a, a material suction port 16b, and an outside air suction port 16c. A supply pipe 6 is connected to the discharge port 16a via a predetermined pipe, and a material tank 3 is connected to the material suction port 16b via a predetermined pipe. Further, one end of a second suction pipe 17 through which the outside air supplied from the supply pipe 6 into the hopper 2 is sucked is connected to the outside air suction port 16c. An air filter 18 is attached to the other end of the second suction pipe 17.

切替弁１６は、外気吸入口１６ｃを閉鎖するとともに排出口１６ａと材料吸入口１６ｂとを連通させる材料供給ポジションと、材料吸入口１６ｂを閉鎖するとともに排出口１６ａと外気吸入口１６ｃとを連通させる外気供給ポジションとに切替可能となっている。 The switching valve 16 closes the outside air suction port 16c and communicates the discharge port 16a and the material suction port 16b, and closes the material suction port 16b and communicates the discharge port 16a and the outside air suction port 16c. Switching to the outside air supply position is possible.

ホッパー２と吸引ポンプ４との間には、排気管７から排出された粉体等の塵埃を除去するための集塵機２０が配置されている。 A dust collector 20 for removing dust such as powder discharged from the exhaust pipe 7 is disposed between the hopper 2 and the suction pump 4.

（粉粒体処理装置の動作）
以上のように構成された粉粒体処理装置１では、以下のように、粒状材料からの粉体の除去、および、粒状材料の混合が行われる。まず、材料排出部９の下端側に配置されるシャッターが材料排出部９の下端側を閉鎖し、開閉弁１４が第１吸入管１２を閉鎖し、かつ、切替弁１６が材料供給ポジションとなっている状態で、吸引ポンプ４が起動する。吸引ポンプ４が起動すると、吸引ポンプ４の吸引力によって、材料タンク３からホッパー２内へ粒状材料が供給される。上述のように、供給管６は、円筒部２ａの接線方向と略平行に円筒部２ａに接続されているため、吸引ポンプ４の吸引力によって、ホッパー２の内部には、螺旋状の上昇気流（螺旋状上昇気流）Ｆ１が発生する。 (Operation of powder processing equipment)
In the granular material processing apparatus 1 configured as described above, the removal of the powder from the granular material and the mixing of the granular material are performed as follows. First, a shutter disposed on the lower end side of the material discharge unit 9 closes the lower end side of the material discharge unit 9, the on-off valve 14 closes the first suction pipe 12, and the switching valve 16 is in the material supply position. In this state, the suction pump 4 is activated. When the suction pump 4 is activated, the particulate material is supplied from the material tank 3 into the hopper 2 by the suction force of the suction pump 4. As described above, since the supply pipe 6 is connected to the cylindrical portion 2a substantially parallel to the tangential direction of the cylindrical portion 2a, a spiral updraft is generated inside the hopper 2 by the suction force of the suction pump 4. (Spiral updraft) F1 is generated.

吸引ポンプ４の起動後、所定時間が経過すると、材料供給ポジションから外気供給ポジションに切替弁１６が切り替わる。また、このタイミングで開閉弁１４が第１吸入管１２を開放する。本形態では、外気供給ポジションに切替弁１６が切り替わり、かつ、開閉弁１４が第１吸入管１２を開放すると、吸引ポンプ４の吸引力によって、第１吸入管１２および第２吸入管１７から外気が吸入されるように、第１吸入管１２の外気の吸入量と第２吸入管１７の外気の吸入量が設定されている。そのため、外気供給ポジションに切替弁１６が切り替わり、かつ、開閉弁１４が第１吸入管１２を開放すると、第１吸入管１２および第２吸入管１７から外気が吸入される。このように、本形態では、吸引ポンプ４の吸引力でホッパー２内へ粒状材料が供給される材料供給状態と、吸引ポンプ４の吸引力で第１吸入管１２および第２吸入管１７から外気が吸入される外気吸入状態とに切替可能となっている。 When a predetermined time elapses after the suction pump 4 is activated, the switching valve 16 is switched from the material supply position to the outside air supply position. At this timing, the on-off valve 14 opens the first suction pipe 12. In this embodiment, when the switching valve 16 is switched to the outside air supply position and the on-off valve 14 opens the first suction pipe 12, the outside air is discharged from the first suction pipe 12 and the second suction pipe 17 by the suction force of the suction pump 4. The intake amount of the outside air through the first suction pipe 12 and the intake amount of the outside air through the second suction pipe 17 are set so that the air is sucked. Therefore, when the switching valve 16 is switched to the outside air supply position and the opening / closing valve 14 opens the first suction pipe 12, the outside air is sucked from the first suction pipe 12 and the second suction pipe 17. As described above, in this embodiment, the material supply state in which the particulate material is supplied into the hopper 2 by the suction force of the suction pump 4 and the outside air from the first suction pipe 12 and the second suction pipe 17 by the suction force of the suction pump 4. It is possible to switch to an outside air inhalation state where the air is inhaled.

第２吸入管１７から外気が吸入されると、切替弁１６の切替時にホッパー２と切替弁１６との間に残っている粒状材料は、第２吸入管１７から吸入される外気によって、ホッパー２内へ供給される。また、吸引ポンプ４の吸引力で第２吸入管１７から吸入される外気によって、ホッパー２の内部には、引き続き、螺旋状上昇気流Ｆ１が発生する。また、吸引ポンプ４の吸引力で第１吸入管１２から吸入される外気によって、材料排出部９の第１吸入管１２よりも上側の部分と、ホッパー２の中心部に上昇気流（中心部上昇気流）Ｆ２が発生する。 When the outside air is sucked from the second suction pipe 17, the particulate material remaining between the hopper 2 and the switching valve 16 when the switching valve 16 is switched is transferred to the hopper 2 by the outside air sucked from the second suction pipe 17. Supplied in. Further, the spiral updraft F <b> 1 is continuously generated inside the hopper 2 by the outside air sucked from the second suction pipe 17 by the suction force of the suction pump 4. Also, the outside air sucked from the first suction pipe 12 by the suction force of the suction pump 4 causes a rising air current (upward of the center part) to a portion above the first suction pipe 12 of the material discharge portion 9 and the central portion of the hopper 2. Airflow) F2 is generated.

ホッパー２内へ供給された粒状材料は、その自重で落下する。一方、粒状材料中の粉体の一部は、螺旋状上昇気流Ｆ１によって、ホッパー２の上端側まで運ばれ、円筒部２ａの内周面と内部配置部材８の外周端との間の隙間Ｓを通過して、排気管７から空気とともに排出される。また、自重で落下する粒状材料は、中心部上昇気流Ｆ２によって吹き上げられる。そのため、吹き上げられた粒状材料内に残存する粉体の一部は、螺旋状上昇気流Ｆ１によって、ホッパー２の上端側まで運ばれ、隙間Ｓを介して、排気管７から空気とともに排出される。また、自重で落下する粒状材料が中心部上昇気流Ｆ２によって吹き上げられるため、落下する粒状材料は混合される。 The granular material supplied into the hopper 2 falls by its own weight. On the other hand, a part of the powder in the granular material is carried to the upper end side of the hopper 2 by the spiral updraft F1, and the clearance S between the inner peripheral surface of the cylindrical portion 2a and the outer peripheral end of the internal arrangement member 8 is obtained. And is discharged from the exhaust pipe 7 together with air. Moreover, the granular material falling by its own weight is blown up by the center ascending airflow F2. Therefore, a part of the powder remaining in the blown-up granular material is carried to the upper end side of the hopper 2 by the spiral ascending airflow F1 and is discharged together with the air from the exhaust pipe 7 through the gap S. Moreover, since the granular material that falls by its own weight is blown up by the center ascending current F2, the falling granular material is mixed.

なお、本形態では、ホッパー２の下端から被供給部１０へ供給したい重さ（大きさ）の粒体が排気管７から排出されないように、かつ、粒状材料から除去したい重さ（大きさ）の粉体が排気管７から排出されるように、上下方向における供給管６と内部配置部材８との距離が設定されている。 In this embodiment, the weight (size) desired to be removed from the granular material so that the particles (weight) desired to be supplied from the lower end of the hopper 2 to the supplied part 10 are not discharged from the exhaust pipe 7. The distance between the supply pipe 6 and the internal arrangement member 8 in the vertical direction is set so that the powder is discharged from the exhaust pipe 7.

外気供給ポジションに切替弁１６を切り替えた後、所定時間が経過すると、吸引ポンプ４が停止して、粒状材料は、材料排出部９の中に溜まる。材料排出部９の中に溜まった粒状材料は、シャッターの開閉動作で被供給部１０へ供給される。また、センサ１１によって、材料排出部９内の粒状材料の量が少なくなったことが検出されると、上述のように、吸引ポンプ４が起動し、ホッパー２内へ粒状材料が供給されて、粒状材料からの粉体の除去、および、粒状材料の混合が行われる。 When a predetermined time has elapsed after switching the switching valve 16 to the outside air supply position, the suction pump 4 stops and the particulate material accumulates in the material discharge unit 9. The granular material accumulated in the material discharge unit 9 is supplied to the supply target unit 10 by the opening / closing operation of the shutter. Further, when the sensor 11 detects that the amount of the granular material in the material discharge portion 9 has decreased, the suction pump 4 is activated as described above, and the granular material is supplied into the hopper 2. Removal of the powder from the granular material and mixing of the granular material are performed.

（本形態の主な効果）
以上説明したように、本形態では、吸引ポンプ４の吸引力で第２吸入管１７から吸入される外気によって、ホッパー２内に螺旋状上昇気流Ｆ１が発生し、吸引ポンプ４の吸引力で第１吸入管１２から吸入される外気によって、ホッパー２内に中心部上昇気流Ｆ２が発生する。そのため、螺旋状上昇気流Ｆ１と中心部上昇気流Ｆ２とによって、粒状材料に含まれる粉体の一部を分離して、排気管７から粉体を排出することが可能になる。 (Main effects of this form)
As described above, in this embodiment, the spiral updraft F1 is generated in the hopper 2 by the outside air sucked from the second suction pipe 17 by the suction force of the suction pump 4, and the first suction force of the suction pump 4 1 Ascending air F2 is generated in the hopper 2 by outside air sucked from the suction pipe 12. Therefore, part of the powder contained in the granular material can be separated by the spiral updraft F1 and the center updraft F2, and the powder can be discharged from the exhaust pipe 7.

本形態では、吸引ポンプ４の吸引力で第１吸入管１２から供給される外気によって、中心部上昇気流Ｆ２を発生させているため、圧縮空気によって、中心部上昇気流Ｆ２を発生させる場合と比較して、中心部上昇気流Ｆ２の流速を遅くすることが可能になる。したがって、本形態では、自重で落下する粒状材料が中心部上昇気流Ｆ２によって繰り返しで吹き上げられるのを抑制することが可能になり、その結果、自重で落下する粒状材料内に残存する粉体が粒体から完全に分離されるのを抑制することが可能になる。したがって、本形態では、中心部上昇気流Ｆ２によって、粒状材料を混合することが可能になる。 In this embodiment, since the center ascending air flow F2 is generated by the outside air supplied from the first suction pipe 12 by the suction force of the suction pump 4, it is compared with the case where the center ascending air flow F2 is generated by the compressed air. Thus, the flow rate of the center ascending airflow F2 can be reduced. Therefore, in this embodiment, it becomes possible to suppress the granular material falling under its own weight from being repeatedly blown up by the center ascending air flow F2, and as a result, the powder remaining in the granular material falling under its own weight is granulated. It becomes possible to suppress complete separation from the body. Therefore, in this embodiment, the granular material can be mixed by the center ascending airflow F2.

また、本形態では、中心部上昇気流Ｆ２の流速を遅くすることが可能になるため、自重で落下する粒状材料の中心部上昇気流Ｆ２による吹き上げ高さを抑制することが可能になる。したがって、本形態では、ホッパー２の高さが比較的低くても、被供給部１０へ供給したい重さ（大きさ）の粒体が排気管７から排出されるのを防止することが可能になる。また、本形態では、１台の吸引ポンプ４によって、螺旋状上昇気流Ｆ１と中心部上昇気流Ｆ２とを発生させることができるため、粉粒体処理装置１の構成を簡素化することが可能になる。 Moreover, in this form, since it becomes possible to slow down the flow velocity of center part ascending airflow F2, it becomes possible to suppress the blowing-up height by the center part ascending airflow F2 of the granular material which falls with dead weight. Therefore, in this embodiment, even when the height of the hopper 2 is relatively low, it is possible to prevent particles having a weight (size) to be supplied to the supplied portion 10 from being discharged from the exhaust pipe 7. Become. Further, in this embodiment, since the spiral updraft F1 and the center updraft F2 can be generated by a single suction pump 4, the configuration of the powder processing apparatus 1 can be simplified. Become.

本形態では、上述のように、吸引ポンプ４の起動後、所定時間が経過すると、外気供給ポジションに切替弁１６が切り替わり、ホッパー２と切替弁１６との間に残っている粒状材料は、第２吸入管１７から吸入される外気によって、ホッパー２内へ供給される。すなわち、本形態では、切替弁１６を切り替えることで、切替弁１６が材料供給ポジションにあるときに材料吸入口１６ｂを通過した粒状材料の全てをホッパー２内へ供給することが可能になる。そのため、本形態では、切替弁１６の制御によって、ホッパー２内へ供給される粒状材料の量を精度良く制御することが可能になる。 In this embodiment, as described above, when a predetermined time has elapsed after the suction pump 4 is started, the switching valve 16 is switched to the outside air supply position, and the granular material remaining between the hopper 2 and the switching valve 16 2 It is supplied into the hopper 2 by the outside air sucked from the suction pipe 17. That is, in this embodiment, by switching the switching valve 16, it is possible to supply all of the particulate material that has passed through the material suction port 16b into the hopper 2 when the switching valve 16 is in the material supply position. Therefore, in this embodiment, the amount of the granular material supplied into the hopper 2 can be accurately controlled by controlling the switching valve 16.

また、本形態では、材料供給ポジションから外気供給ポジションへ切替弁１６を切り替えれば、ホッパー２内へ粒状材料が供給された後も螺旋状上昇気流Ｆ１を発生させることができるため、粉粒体処理装置１の制御を簡素化することが可能になる。また、本形態では、材料タンク３を開閉する開閉弁と第２吸入管１７を開閉する開閉弁とが別個に設けられている場合と比較して、粉粒体処理装置１の構成を簡素化することが可能になる。 Further, in this embodiment, if the switching valve 16 is switched from the material supply position to the outside air supply position, the spiral updraft F1 can be generated even after the granular material is supplied into the hopper 2, so that the granular material processing Control of the device 1 can be simplified. Further, in this embodiment, the configuration of the granular material processing apparatus 1 is simplified as compared with the case where the on-off valve for opening and closing the material tank 3 and the on-off valve for opening and closing the second suction pipe 17 are provided separately. It becomes possible to do.

本形態では、円筒部２ａの内部の上端側に、内部配置部材８が配置されている。そのため、上面蓋部２ｃと内部配置部材８との間の空間の容積を小さくして、この空間における吸引ポンプ４の吸引圧の低下を防止することが可能になる。また、本形態では、円筒部２ａの内周面と内部配置部材８の外周端との間に隙間Ｓが形成されているため、隙間Ｓを小さくして、隙間Ｓにおける吸引ポンプ４の吸引圧の低下を防止することが可能になる。したがって、排気管７の内径に比べて円筒部２ａの内径が大きくなっていても、上面蓋部２ｃと内部配置部材８との間の空間、および、隙間Ｓにおける吸引ポンプ４の吸引圧の低下を防止することが可能になる。その結果、本形態では、吸引ポンプ４の吸引力が比較的小さくても、螺旋状上昇気流Ｆ１によってホッパー２の上端側まで運ばれてきた粉体を排気管７から適切に排出することが可能になる。 In this embodiment, the internal arrangement member 8 is arranged on the upper end side inside the cylindrical portion 2a. Therefore, it is possible to reduce the volume of the space between the upper surface lid 2c and the internal arrangement member 8, and to prevent the suction pressure of the suction pump 4 in this space from decreasing. In the present embodiment, since the gap S is formed between the inner peripheral surface of the cylindrical portion 2a and the outer peripheral end of the internal arrangement member 8, the gap S is reduced and the suction pressure of the suction pump 4 in the gap S is reduced. Can be prevented. Therefore, even if the inner diameter of the cylindrical portion 2a is larger than the inner diameter of the exhaust pipe 7, the suction pressure of the suction pump 4 in the space between the upper surface lid portion 2c and the internal arrangement member 8 and the gap S is reduced. Can be prevented. As a result, in this embodiment, even if the suction force of the suction pump 4 is relatively small, the powder that has been carried to the upper end side of the hopper 2 by the spiral updraft F1 can be appropriately discharged from the exhaust pipe 7. become.

本形態では、円筒部２ａの中心と内部配置部材８の中心とが略一致するように、内部配置部材８が配置されており、円筒部２ａの内周面と内部配置部材８の外周端との間には、円環状の隙間Ｓが形成されている。そのため、螺旋状上昇気流Ｆ１によってホッパー２の上端側まで運ばれてきた粉体を内部配置部材８の外周側の全域で内部配置部材８の上側へ吸引することが可能になる。したがって、ホッパー２の上端側まで運ばれてきた粉体を排気管７から効果的に排出することが可能になる。 In this embodiment, the internal arrangement member 8 is arranged so that the center of the cylindrical portion 2a and the center of the internal arrangement member 8 are substantially coincident with each other, and the inner peripheral surface of the cylindrical portion 2a and the outer peripheral end of the internal arrangement member 8 are An annular gap S is formed between them. Therefore, the powder conveyed to the upper end side of the hopper 2 by the spiral updraft F <b> 1 can be sucked up to the upper side of the internal arrangement member 8 over the entire outer peripheral side of the internal arrangement member 8. Therefore, the powder conveyed to the upper end side of the hopper 2 can be effectively discharged from the exhaust pipe 7.

なお、本形態では、内部配置部材８の位置を上下動させれば、上面蓋部２ｃと内部配置部材８との間の空間の容積を変えることが可能になり、この空間の容積を変えることで、この空間での吸引圧を変えることが可能になる。また、この空間での吸引圧を変えることで、排気管７から排出される粉体の重さ（大きさ）を変えることが可能になり、かつ、排気管から粉体を排出させないことも可能になる。すなわち、本形態では、円筒部２ａの形状を変えずに内部配置部材８の位置を上下動させるといった比較的簡易な構成で、排気管７から排出される粉体の重さ（大きさ）を変えること、および、排気管７から粉体を排出させないようにすることが可能になる。たとえば、内部配置部材８の位置を下側へ移動させれば、上面蓋部２ｃと内部配置部材８との間の空間の容積が広くなり、この空間での吸引圧が低くなるため、排気管７から排出可能な粉体の重さは軽くなる。なお、本形態では、内部配置部材８に固定されるスペーサの長さを変えるといった簡易な構成で、内部配置部材８の位置を上下動させることが可能である。また、本形態では、第１吸入管１２の途中にホッパー２内へ供給される外気の量を調整するための調整弁が配置されているため、この調整弁によって、第１吸入管１２からホッパー２内へ供給される外気の量を調整することで、排気管７から排出される粉体の重さ（大きさ）を変えることも可能である。 In this embodiment, if the position of the internal arrangement member 8 is moved up and down, the volume of the space between the upper surface lid 2c and the internal arrangement member 8 can be changed, and the volume of this space can be changed. Thus, the suction pressure in this space can be changed. In addition, by changing the suction pressure in this space, it is possible to change the weight (size) of the powder discharged from the exhaust pipe 7 and not to discharge the powder from the exhaust pipe. become. That is, in this embodiment, the weight (size) of the powder discharged from the exhaust pipe 7 is set with a relatively simple configuration in which the position of the internal arrangement member 8 is moved up and down without changing the shape of the cylindrical portion 2a. It becomes possible to prevent the powder from being discharged from the exhaust pipe 7. For example, if the position of the internal arrangement member 8 is moved downward, the volume of the space between the upper surface lid 2c and the internal arrangement member 8 increases, and the suction pressure in this space decreases, so the exhaust pipe The weight of the powder that can be discharged from 7 is reduced. In this embodiment, the position of the internal arrangement member 8 can be moved up and down with a simple configuration in which the length of the spacer fixed to the internal arrangement member 8 is changed. Further, in this embodiment, an adjustment valve for adjusting the amount of outside air supplied into the hopper 2 is arranged in the middle of the first suction pipe 12, so that the adjustment valve controls the hopper from the first suction pipe 12. It is also possible to change the weight (size) of the powder discharged from the exhaust pipe 7 by adjusting the amount of outside air supplied to the inside 2.

（他の実施の形態）
上述した形態では、円筒部２ａの内部の上端側に内部配置部材８が配置されているが、内部配置部材８に代えて、たとえば、図３（Ａ）に示す内部配置部材３８が配置されても良い。内部配置部材３８は、円板状に形成されており、その外径は、円筒部２ａの内径と略等しくなっている。また、内部配置部材３８の外周側部分には、粒状材料から除去したい大きさの粉体が通過可能な貫通孔３８ａが形成されている。また、内部配置部材８に代えて、図３（Ｂ）に示す内部配置部材４８が配置されても良い。内部配置部材４８は、円板状に形成されており、その外径は、円筒部２ａの内径と略等しくなっている。また、内部配置部材４８の外周側部分には、粒状材料から除去したい大きさの粉体が通過可能な切欠部４８ａが径方向内側に窪むように形成されている。内部配置部材８に代えて、内部配置部材３８、４８が円筒部２ａの内部の上端側に配置される場合であっても、円筒部２ａの内部の上端側に内部配置部材８が配置される場合と同様の効果を得ることができる。 (Other embodiments)
In the embodiment described above, the internal arrangement member 8 is arranged on the upper end side inside the cylindrical portion 2a. However, instead of the internal arrangement member 8, for example, an internal arrangement member 38 shown in FIG. Also good. The internal arrangement member 38 is formed in a disk shape, and its outer diameter is substantially equal to the inner diameter of the cylindrical portion 2a. In addition, a through-hole 38a through which powder having a size desired to be removed from the granular material can pass is formed in the outer peripheral side portion of the internal arrangement member 38. Moreover, it replaces with the internal arrangement | positioning member 8, and the internal arrangement | positioning member 48 shown to FIG. 3 (B) may be arrange | positioned. The internal arrangement member 48 is formed in a disk shape, and its outer diameter is substantially equal to the inner diameter of the cylindrical portion 2a. In addition, a cutout portion 48a through which powder having a size desired to be removed from the granular material can pass is formed on the outer peripheral side portion of the internal arrangement member 48 so as to be recessed inward in the radial direction. In place of the internal arrangement member 8, even when the internal arrangement members 38 and 48 are arranged on the upper end side inside the cylindrical portion 2a, the internal arrangement member 8 is arranged on the upper end side inside the cylindrical portion 2a. The same effect as the case can be obtained.

上述した形態では、排気管７は、上面蓋部２ｃの中心に接続されているが、上面蓋部２ｃの外周端側に接続されても良い。また、排気管７は、円筒部２ａの上端側の側面に接続されても良い。これらの場合には、円筒部２ａの上端側において、円筒部２ａの外周側部分の吸引圧を高めることが可能になるため、円筒部２ａの内部の上端側に内部配置部材８を配置しなくても、螺旋状上昇気流Ｆ１によってホッパー２の上端側まで運ばれてきた粉体を排気管７から排出することが可能になる。 In the embodiment described above, the exhaust pipe 7 is connected to the center of the upper surface lid 2c, but may be connected to the outer peripheral end of the upper surface lid 2c. Further, the exhaust pipe 7 may be connected to the side surface on the upper end side of the cylindrical portion 2a. In these cases, the suction pressure at the outer peripheral side portion of the cylindrical portion 2a can be increased on the upper end side of the cylindrical portion 2a. Therefore, the internal arrangement member 8 is not arranged on the upper end side inside the cylindrical portion 2a. However, the powder that has been conveyed to the upper end side of the hopper 2 by the spiral updraft F <b> 1 can be discharged from the exhaust pipe 7.

上述した形態では、内部配置部材８は、円板状に形成されているが、内部配置部材８は、四角板状または六角板状等の多角板状に形成されても良いし、楕円板状に形成されても良い。また、上述した形態では、円筒部２ａの中心と内部配置部材８の中心とが略一致するように、内部配置部材８が配置されており、円筒部２ａの内周面と内部配置部材８の外周端との間には、径方向の幅が略一定な円環状の隙間Ｓが形成されているが、円筒部２ａの中心と内部配置部材８の中心とがずれるように、内部配置部材８が配置されても良い。この場合には、円筒部２ａの内周面と内部配置部材８の外周端とが接触しないように、内部配置部材８が配置されても良いし、円筒部２ａの内周面と内部配置部材８の外周端とが接触するように、内部配置部材８が配置されても良い。 In the embodiment described above, the internal arrangement member 8 is formed in a disk shape, but the internal arrangement member 8 may be formed in a polygonal plate shape such as a square plate shape or a hexagonal plate shape, or an elliptical plate shape. May be formed. Moreover, with the form mentioned above, the internal arrangement | positioning member 8 is arrange | positioned so that the center of the cylindrical part 2a and the center of the internal arrangement | positioning member 8 may correspond substantially, the inner peripheral surface of the cylindrical part 2a, and the internal arrangement | positioning member 8 of An annular gap S having a substantially constant radial width is formed between the outer peripheral end and the inner arrangement member 8 so that the center of the cylindrical portion 2a and the center of the inner arrangement member 8 are shifted. May be arranged. In this case, the internal arrangement member 8 may be arranged so that the inner circumference surface of the cylindrical portion 2a does not contact the outer circumference end of the internal arrangement member 8, or the inner circumference surface of the cylindrical portion 2a and the internal arrangement member The internal arrangement member 8 may be arranged so that the outer peripheral end of the 8 comes into contact.

上述した形態では、材料供給ポジションから外気供給ポジションへ切替弁１６が切り替わるタイミングで開閉弁１４が第１吸入管１２を開放しているが、材料供給ポジションから外気供給ポジションへ切替弁１６が切り替わった後、所定時間経過後に、開閉弁１４が第１吸入管１２を開放しても良い。また、粒状材料を混合する必要がなく、かつ、中心部上昇気流Ｆ２を発生させなくても除去したい重さ（大きさ）の粉体を排気管７から排出できる場合には、吸引ポンプ４が駆動しているときに、常時、開閉弁１４を閉鎖していても良い。 In the embodiment described above, the opening / closing valve 14 opens the first suction pipe 12 at the timing when the switching valve 16 switches from the material supply position to the outside air supply position, but the switching valve 16 switches from the material supply position to the outside air supply position. Thereafter, the on-off valve 14 may open the first suction pipe 12 after a predetermined time has elapsed. In addition, when it is not necessary to mix the particulate material and powder having a weight (size) to be removed can be discharged from the exhaust pipe 7 without generating the center ascending airflow F2, the suction pump 4 The open / close valve 14 may be closed at all times during driving.

上述した形態では、ホッパー２と材料タンク３との間に、材料供給ポジションと外気供給ポジションとに切替可能な切替弁１６が配置されているが、ホッパー２と材料タンク３との間に、材料タンク３を開閉する開閉弁と第２吸入管１７を開閉する開閉弁とが別個に配置されても良い。この場合には、たとえば、材料タンク３を閉鎖するタイミングで、第２吸入管１７を開放すれば良い。また、この場合には、ホッパー２内に粒状材料を供給した後の、所定時間経過後に、第２吸入管１７を閉鎖して、第１吸入管１２のみから外気をホッパー２内へ供給しても良い。また、粉粒体処理装置１で粒状材料の混合のみを行う場合には、吸引ポンプ４が駆動しているときに、常時、第２吸入管１７を閉鎖していても良い。 In the above-described embodiment, the switching valve 16 that can be switched between the material supply position and the outside air supply position is disposed between the hopper 2 and the material tank 3, but the material is disposed between the hopper 2 and the material tank 3. The on-off valve that opens and closes the tank 3 and the on-off valve that opens and closes the second suction pipe 17 may be disposed separately. In this case, for example, the second suction pipe 17 may be opened at the timing when the material tank 3 is closed. In this case, the second suction pipe 17 is closed after a predetermined time has elapsed after the particulate material is supplied into the hopper 2, and the outside air is supplied into the hopper 2 only from the first suction pipe 12. Also good. In addition, when only the mixing of the particulate material is performed in the granular material processing apparatus 1, the second suction pipe 17 may be always closed when the suction pump 4 is driven.

また、粉粒体処理装置１で粒状材料の混合のみを行う場合には、たとえば、上下方向における供給管６と内部配置部材８との距離を長くしても良いし、円筒部２ａの内部に内部配置部材８を配置しなくても良い。あるいは、粉粒体処理装置１で粒状材料の混合のみを行う場合には、内部配置部材８に代えてパンチングメタルを配置しても良い。 Moreover, when mixing only a granular material with the granular material processing apparatus 1, you may lengthen the distance of the supply pipe | tube 6 and the internal arrangement | positioning member 8 in an up-down direction, for example, inside the cylindrical part 2a. The internal arrangement member 8 may not be arranged. Alternatively, when the granular material processing apparatus 1 performs only mixing of the granular material, a punching metal may be arranged instead of the internal arrangement member 8.

１粉粒体処理装置
２ホッパー
２ａ円筒部
２ｃ上面蓋部（天板）
３材料タンク（材料貯留部）
４吸引ポンプ（吸引手段）
６供給管
７排気管
８、３８、４８内部配置部材
１２第１吸入管
１４開閉弁
１６切替弁
１６ａ排出口
１６ｂ材料吸入口
１６ｃ外気吸入口
１７第２吸入管
３８ａ貫通孔
４８ａ切欠部
Ｓ隙間 DESCRIPTION OF SYMBOLS 1 Powder processing apparatus 2 Hopper 2a Cylindrical part 2c Upper surface cover part (top plate)
3 Material tank (material storage part)
4 Suction pump (suction means)
6 Supply pipe 7 Exhaust pipe 8, 38, 48 Internally arranged member 12 First suction pipe 14 On-off valve 16 Switching valve 16a Discharge port 16b Material suction port 16c Outside air suction port 17 Second suction tube 38a Through hole 48a Notch S Clearance

Claims

A hopper having a cylindrical portion formed in a cylindrical shape and a top plate for closing the upper end of the cylindrical portion;
A supply pipe connected to an intermediate position of the cylindrical portion in the vertical direction substantially parallel to a tangential direction of the cylindrical portion, and a granular material containing particles and powder is supplied into the hopper;
An exhaust pipe connected to the upper end side of the cylindrical portion or the top plate and exhausting air in the hopper;
Suction means connected to the exhaust pipe for sucking air in the hopper;
A first suction pipe disposed under the hopper and into which outside air supplied from the lower end side of the hopper into the hopper is sucked;
A material reservoir for storing the granular material before being supplied from the supply pipe;
A second suction pipe that is disposed between the supply pipe and the material storage section and sucks outside air supplied from the supply pipe into the hopper,
After the granular material is supplied from the material reservoir to the hopper, the suction means draws the first suction pipe and the second suction pipe or the first suction pipe into the hopper. Switching to an outside air supply state in which outside air is supplied.

An exhaust port disposed between the supply pipe and the material reservoir, to which the supply pipe is connected, a material inlet to which the material reservoir is connected, and an outside air inlet to which the second suction pipe is connected; A switching valve having
The switching valve closes the outside air suction port and communicates the discharge port and the material suction port to bring the material into a supply state, closes the material suction port and closes the discharge port and the material 2. The granular material processing apparatus according to claim 1, wherein the apparatus can be switched to an outside air supply position that communicates with an outside air suction port to enter the outside air supply state.

An on-off valve for opening and closing the first suction pipe;
When the switching valve is in the material supply position, the on-off valve closes the first suction pipe, and the granular material is supplied from the material reservoir into the hopper by the suction force of the suction means,
When the switching valve is in the outside air supply position, the on-off valve opens the first suction pipe, and the suction force of the suction means causes the first suction pipe and the second suction pipe to enter the hopper. 3. The granular material processing apparatus according to claim 2, wherein outside air is supplied.

An internal arrangement member disposed on an upper end side inside the cylindrical portion and below the exhaust pipe;
The powder according to any one of claims 1 to 3, wherein a gap through which the powder can pass is formed between an inner peripheral surface of the cylindrical portion and an outer peripheral end of the internal arrangement member. Granule processing equipment.

The internal arrangement member is formed in a substantially disc shape, and is arranged so that the center thereof substantially coincides with the center of the cylindrical portion,
The outer diameter of the internal arrangement member is smaller than the inner diameter of the cylindrical portion, and the annular gap is formed between the inner peripheral surface of the cylindrical portion and the outer peripheral end of the internal arrangement member. The granular material processing apparatus of Claim 4 characterized by the above-mentioned.

An internal arrangement member that is formed in a circular shape and that is disposed on the upper end side inside the cylindrical portion and below the exhaust pipe;
The outer diameter of the internal arrangement member is substantially equal to the inner diameter of the cylindrical portion,
A through hole through which the powder can pass is formed in the outer peripheral side portion of the internal arrangement member, or a notch part through which the powder can pass is formed at the outer peripheral end of the internal arrangement member. It forms so that it may become depressed inside a direction, The granular material processing apparatus in any one of Claim 1 to 3 characterized by the above-mentioned.

The said exhaust pipe is connected to the center of the said top plate, The granular material processing apparatus in any one of Claim 1 to 6 characterized by the above-mentioned.