JPH09155222A - Control method and device for air flow type crusher with built-in classifier - Google Patents
Control method and device for air flow type crusher with built-in classifierInfo
- Publication number
- JPH09155222A JPH09155222A JP32051295A JP32051295A JPH09155222A JP H09155222 A JPH09155222 A JP H09155222A JP 32051295 A JP32051295 A JP 32051295A JP 32051295 A JP32051295 A JP 32051295A JP H09155222 A JPH09155222 A JP H09155222A
- Authority
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- Prior art keywords
- crushing chamber
- classifier
- crushing
- pressure
- air flow
- Prior art date
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Abstract
(57)【要約】
【課題】 粉砕された製品の品質を上げる。
【解決手段】 粉砕室１１の側壁に第１圧力測定器１８
が取り付けられ、その測定結果に基づいて排気量調節弁
３０の弁開度が調節される。ここでは、粉砕室１１内の
静圧が「０」になるように制御される。これによって、
粉砕室１１内の原料１６が粉砕ノズル１２から噴出され
る圧縮空気以外の影響を受けなくなり、設定した条件で
原料１６が粉砕される。したがって、粉砕条件を適切に
設定して分級精度を上げ、製品の品質を向上させること
が可能になる。
(57) [Abstract] [PROBLEMS] To improve the quality of crushed products. A first pressure measuring device (18) is provided on a side wall of a crushing chamber (11).
Is attached, and the valve opening degree of the displacement control valve 30 is adjusted based on the measurement result. Here, the static pressure in the crushing chamber 11 is controlled to be "0". by this,
The raw material 16 in the crushing chamber 11 is not affected by anything other than the compressed air jetted from the crushing nozzle 12, and the raw material 16 is crushed under the set conditions. Therefore, it becomes possible to appropriately set the crushing conditions to improve the classification accuracy and improve the quality of the product.
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、分級機を内蔵した
気流式粉砕機の制御方法及び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control method and apparatus for an air flow type crusher having a classifier.
【０００２】[0002]
【従来の技術】圧縮空気の膨張力を利用して粉体原料を
粉砕する気流式粉砕機がある。この気流式粉砕機には、
粉砕された粉体を高速回転する分級ロータによって分級
する分級機を内蔵したものがある。この分級機は、分級
ロータの回転数を変えることによって粉砕された粉体
（以下、完砕物という）の粒径を選択することができ、
回転数が多いほど分級粒径を細かくすることができる。
分級機を通らなかった粗粒は、自重で粉砕室に戻り再度
粉砕される。このことから、従来の分級機を内蔵した気
流式粉砕機では、分級機の回転数を制御することによっ
て、完砕物の粒度制御が行われていた。2. Description of the Related Art There is an air flow type crusher for crushing a powder raw material by utilizing the expansion force of compressed air. In this airflow type crusher,
There is a built-in classifier that classifies the pulverized powder with a classifying rotor that rotates at high speed. This classifier can select the particle size of the pulverized powder (hereinafter referred to as the complete crushed product) by changing the rotation speed of the classification rotor,
The larger the number of rotations, the finer the classification particle size can be.
The coarse particles that have not passed through the classifier are returned to the crushing chamber by their own weight and are crushed again. For this reason, in the conventional air flow type pulverizer having a built-in classifier, the particle size of the completely crushed product is controlled by controlling the rotation speed of the classifier.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
分級機を内蔵した気流式粉砕機においては、分級機によ
って分級された完砕物の粒度にばらつきがあり、製品の
品質が悪くなるという問題があった。そこで、本発明
は、完砕物の分級精度を上げて品質を向上させることが
可能な分級機を内蔵した気流式粉砕機の制御方法及び装
置を提供することを目的とする。However, in the conventional air flow type crusher having a built-in classifier, there is a problem that the particle size of the completely crushed product classified by the classifier varies and the quality of the product deteriorates. It was Therefore, an object of the present invention is to provide a control method and an apparatus for an air flow type crusher having a built-in classifier capable of increasing the classification accuracy of a completely crushed product and improving the quality.
【０００４】[0004]
【課題を解決するための手段】本発明の上記目的は、分
級機を内蔵する気流式粉砕機の制御方法において、粉砕
室の内部圧力を測定し、前記内部圧力に基づいて前記粉
砕室の排気条件を制御することを特徴とする分級機を内
蔵した気流式粉砕機の制御によって達成するとができ
る。The above object of the present invention is to measure the internal pressure of a crushing chamber in a method for controlling an air flow type crusher having a classifier, and to exhaust the crushing chamber based on the internal pressure. This can be achieved by controlling an air flow type pulverizer having a classifier which is characterized by controlling conditions.
【０００５】粉砕室の排気条件を変えることによって、
粉砕室の内部圧力が変わり、粉砕室内の原料に対する粉
砕用の圧縮空気の作用が変わる。本発明の上記目的は、
分級機を内蔵する気流式粉砕機の制御装置において、粉
砕室の壁面に内部圧力を測定する静圧検出手段を取り付
けたことを特徴とする分級機を内蔵した気流式粉砕機の
制御装置によっても達成することができる。By changing the exhaust conditions of the grinding chamber,
The internal pressure of the grinding chamber changes, and the action of the compressed air for grinding on the raw materials in the grinding chamber changes. The above object of the present invention is to
In the control device of the air flow type crusher with a built-in classifier, the control device of the air flow type crusher with a built-in classifier is characterized in that static pressure detection means for measuring the internal pressure is attached to the wall surface of the crushing chamber. Can be achieved.
【０００６】粉砕室の壁面に静圧検出手段を取り付ける
ことによって、粉砕室内の圧力を直接測定することがで
きる。本発明の上記目的は、前記静圧検出手段の検出結
果が「０」になるように前記粉砕室の排気条件を設定す
ることを特徴とする請求項１記載の分級機を内蔵した気
流式粉砕機の制御方法によって達成することができる。By mounting the static pressure detecting means on the wall surface of the crushing chamber, the pressure in the crushing chamber can be directly measured. The above object of the present invention is to set an exhaust condition of the crushing chamber so that a detection result of the static pressure detecting means becomes "0", and an air flow type crusher having a classifier built therein. It can be achieved by the control method of the machine.
【０００７】粉砕室の内部圧力を「０」にすることによ
って、圧縮空気による原料の粉砕作用を安定して行うこ
とができる。また、本発明の上記目的は、分級機を内蔵
する気流式粉砕機の制御装置において、粉砕室の出口配
管系に内部圧力を測定する静圧検出手段を取り付けたこ
とを特徴とする分級機を内蔵した気流式粉砕機の制御装
置によって達成することができる。By setting the internal pressure of the crushing chamber to "0", the crushing action of the raw material by the compressed air can be stably performed. Further, the above object of the present invention is, in a control device for an air flow type crusher having a built-in classifier, a classifier characterized by having a static pressure detecting means for measuring an internal pressure attached to an outlet piping system of a crushing chamber. This can be achieved by a built-in airflow crusher controller.
【０００８】粉砕室の出口配管系の圧力に、粉砕室から
圧力測定点までの圧力損失を加えることによって、粉砕
室の圧力を算出することができる。The pressure in the crushing chamber can be calculated by adding the pressure loss from the crushing chamber to the pressure measuring point to the pressure in the outlet piping system of the crushing chamber.
【０００９】[0009]
【発明の実施の形態】以下、本発明に係わる分級機を内
蔵した気流式粉砕機の制御方法及び装置の実施形態につ
いて、図面を参照して詳細に説明する。図１は本発明を
適用した粉砕装置の構成図、図２は気流式分級機の構成
図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a control method and apparatus for an air flow type crusher incorporating a classifier according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram of a crushing device to which the present invention is applied, and FIG. 2 is a block diagram of an airflow classifier.
【００１０】図１に示すように、この粉砕装置１は、気
流式粉砕機１０の粉砕室１１に圧縮空気を噴出する粉砕
ノズル１２、１２が設けられている。粉砕室１１には、
原料供給ホッパ１３、原料供給装置１４及び配管１５を
介して例えばトナーなどの原料１６が供給される。ま
た、粉砕室１１の側壁には、取り付け座１７が設けら
れ、この取り付け座１７に静圧検出手段である第１圧力
測定器１８が取り付けられている。この第１圧力測定器
１８で、粉砕室１１内の静圧を直接検出することができ
る。第１圧力測定器１８の検出信号は、制御部１９に供
給される。As shown in FIG. 1, the crushing apparatus 1 is provided with crushing nozzles 12, 12 for ejecting compressed air into a crushing chamber 11 of an air flow type crusher 10. In the grinding chamber 11,
A raw material 16 such as toner is supplied through a raw material supply hopper 13, a raw material supply device 14, and a pipe 15. A mounting seat 17 is provided on the side wall of the crushing chamber 11, and a first pressure measuring device 18, which is a static pressure detecting means, is mounted on the mounting seat 17. With this first pressure measuring device 18, the static pressure in the crushing chamber 11 can be directly detected. The detection signal of the first pressure measuring device 18 is supplied to the control unit 19.
【００１１】粉砕室１１の出口２１には出口配管２２が
接続され、出口配管２２の途中の上面側に取り付け座２
３が設けられて、取り付け座２３に静圧検出手段である
第２圧力測定器２４が取り付けられている。第２圧力測
定器２４の検出信号は、制御部１９に送られる。出口配
管２２を通過した完砕物２７は製品捕集装置２５で捕集
され、排出口２６からこの完砕物２７が排出される。製
品捕集装置２５の上部側には排気配管２８の一端が接続
され、排気配管２８の他端は排気装置２９に接続されて
いる。また、排気配管２８の途中には、排気量調節弁３
０と排気量検出器３１が設けられている。An outlet pipe 22 is connected to the outlet 21 of the crushing chamber 11, and a mounting seat 2 is provided on the upper surface side in the middle of the outlet pipe 22.
3 is provided, and the second pressure measuring device 24, which is a static pressure detecting means, is attached to the attachment seat 23. The detection signal of the second pressure measuring device 24 is sent to the control unit 19. The completed crushed product 27 that has passed through the outlet pipe 22 is collected by the product collecting device 25, and the completed crushed product 27 is discharged from the discharge port 26. One end of the exhaust pipe 28 is connected to the upper side of the product collecting device 25, and the other end of the exhaust pipe 28 is connected to the exhaust device 29. Further, in the middle of the exhaust pipe 28, the exhaust amount control valve 3
0 and a displacement detector 31 are provided.
【００１２】図２は、気流式粉砕機１０の詳細図であ
る。気流式粉砕機１０の粉砕室１１の側壁に設けられた
取り付け座１７には、濾過部４０、配管４１及び止め弁
４２を介して第１圧力測定器１８が取り付けられてい
る。配管４１には、洗浄弁４３を介して洗浄用の圧縮空
気４４が供給される。粉砕室１１の上部には、分級機４
６が内蔵されている。この分級機４６は、分級ロータ４
７によって分級する粉体の粒径を選別するもので、分級
ロータ４７の回転数が多いほど分級される粉体の粒径が
細かくなる。分級ロータ４７で分級された完砕物２７
は、出口２１から排出される。分級ロータ４７の軸受け
及び分級ロータ４７と粉砕室１１との間の隙間には、圧
縮空気４８，４９が供給される。FIG. 2 is a detailed view of the airflow type crusher 10. A first pressure measuring device 18 is attached to a mounting seat 17 provided on the side wall of the crushing chamber 11 of the airflow crusher 10 via a filtering unit 40, a pipe 41 and a stop valve 42. Compressed air 44 for cleaning is supplied to the pipe 41 via a cleaning valve 43. At the top of the crushing chamber 11, a classifier 4
6 is built in. This classifier 46 is used for the classification rotor 4
The particle size of the powder to be classified is selected according to 7. The larger the number of revolutions of the classification rotor 47, the finer the particle size of the powder to be classified. Completely crushed material 27 classified by classification rotor 47
Is discharged from the outlet 21. Compressed air 48, 49 is supplied to the bearing of the classification rotor 47 and the gap between the classification rotor 47 and the crushing chamber 11.
【００１３】次に、この粉砕装置１の作用を説明する。
図１に示すように、粉砕しようとする例えばトナーなど
の原料１６は、原料供給ホッパ１３、原料供給装置１４
及び配管１５を介して気流式粉砕機１０の粉砕室１１内
に供給される。粉砕室１１内の原料１６は、図２に示す
ように粉砕ノズル１２から噴出される圧縮空気５０，５
０によって粉砕され、粉砕産物５１が生成される。Next, the operation of the crushing device 1 will be described.
As shown in FIG. 1, the raw material 16 such as toner to be crushed is supplied to the raw material supply hopper 13 and the raw material supply device 14.
And is supplied into the crushing chamber 11 of the airflow crusher 10 via the pipe 15. The raw material 16 in the crushing chamber 11 is compressed air 50, 5 jetted from the crushing nozzle 12 as shown in FIG.
It is ground by 0, and the ground product 51 is produced.
【００１４】一方、図１に示すように粉砕室１１内の空
気は、製品捕集装置２５を介して排気装置２９によって
吸引されている。そして、粉砕室１１内で生成された粉
砕産物５１は、分級機４６の分級ロータ４７で分級さ
れ、分級された完砕物２７が出口２１及び出口配管２２
を経て製品捕集装置２５で捕集される。この粉砕処理中
に、粉砕室１１内の静圧が第１圧力測定器１８によって
測定され、その検出信号が制御部１９に供給される。そ
して、この検出信号、すなわち、粉砕室１１内の静圧に
応じて、排気量調節弁３０の弁開度が制御部１９によっ
て制御される。本例では、次に説明する理由によって、
粉砕室１１内の静圧が「０」、になるように排気量調節
弁３０の弁開度が制御される。On the other hand, as shown in FIG. 1, the air in the crushing chamber 11 is sucked by the exhaust device 29 through the product collecting device 25. Then, the crushed product 51 generated in the crushing chamber 11 is classified by the classifying rotor 47 of the classifier 46, and the classified complete crushed product 27 is the outlet 21 and the outlet pipe 22.
Then, the product is collected by the product collecting device 25. During the crushing process, the static pressure in the crushing chamber 11 is measured by the first pressure measuring device 18, and the detection signal thereof is supplied to the control unit 19. Then, the valve opening degree of the exhaust amount control valve 30 is controlled by the control unit 19 according to this detection signal, that is, the static pressure in the crushing chamber 11. In this example, for the reasons explained below,
The valve opening degree of the exhaust amount control valve 30 is controlled so that the static pressure in the crushing chamber 11 becomes "0".
【００１５】すなわち、粉砕室１１内の静圧が負圧とな
る条件は、粉砕室１１内に供給される総空気量、つま
り、粉砕ノズル１２から噴出される圧縮空気５０と、分
級機４６に供給される圧縮空気４８，４９との合計量
（総空気量）より、排気量の方が多い場合であり、この
場合には、粉砕室１１内の空気及び粉体が強制的に吸い
出されることになる。したがって、分級しようとする粒
子より大きな粒子の粉体も吸い出されてしまい、完砕物
の粒度が粗くなってしまう。That is, the condition that the static pressure in the crushing chamber 11 is a negative pressure is that the total amount of air supplied into the crushing chamber 11, that is, the compressed air 50 jetted from the crushing nozzle 12 and the classifier 46. This is the case where the exhaust amount is larger than the total amount (total air amount) of the supplied compressed air 48, 49. In this case, the air and powder in the crushing chamber 11 are forcibly sucked out. It will be. Therefore, the powder of particles larger than the particles to be classified is also sucked out, and the particle size of the completed crushed product becomes coarse.
【００１６】これとは反対に、粉砕室１１内の静圧が正
圧になる条件は、粉砕室１１内に供給される総空気量よ
り、排気量の方が少ない場合であり、この場合には、粉
砕室１１内の空気及び粉体が強制的に押し出されること
になる。したがって、これまた分級しようとする完砕物
２７より大きな粒径の粉体が排出されてしまう。これに
対して、粉砕室１１内の静圧が「０」の場合には、粉砕
室１１内の空気及び粉体が強制的に分級ロータ４７側に
吸引されることも、また、押し出されることがない。ま
た、粉砕ノズル１２から噴出される圧縮空気に外部の圧
力が影響されることがないので、粉砕ノズル１２から噴
出された圧縮空気５０が自然の状態で原料１６に作用す
る。したがって、この圧縮空気５０の噴出条件を適切に
設定することによって、粉砕室１１内に供給された原料
１６を効率よく粉砕することができる。On the contrary, the condition that the static pressure in the crushing chamber 11 becomes a positive pressure is that the exhaust amount is smaller than the total air amount supplied into the crushing chamber 11, and in this case, Means that the air and powder in the crushing chamber 11 are forced out. Therefore, powder having a particle size larger than that of the completely crushed product 27 to be classified is discharged. On the other hand, when the static pressure in the crushing chamber 11 is “0”, the air and the powder in the crushing chamber 11 are forcibly sucked toward the classification rotor 47 side and also pushed out. There is no. In addition, since the external pressure is not affected by the compressed air ejected from the crushing nozzle 12, the compressed air 50 ejected from the crushing nozzle 12 acts on the raw material 16 in a natural state. Therefore, by appropriately setting the ejection condition of the compressed air 50, the raw material 16 supplied into the crushing chamber 11 can be efficiently crushed.
【００１７】更に、粉砕室１１内の静圧が「０」の場合
は、分級ロータ４７による分級作用が最も自然に働くの
で、分級ロータ４７の回転数を制御することによって、
分級精度を上げることができ、完砕物２７の品質を向上
させることができる。この粉砕装置１では、粉砕処理を
長時間続けると濾過部４０（図２）に粉体が付着して圧
力損失が増大し、第１圧力測定器１８の測定結果に誤差
が発生するので、濾過部４０に対して洗浄弁４３から定
期的に圧縮空気４４を供給し濾過部４０を洗浄すること
によって、粉砕室１１内の静圧を正確に測定することが
可能になる。Further, when the static pressure in the crushing chamber 11 is "0", the classification action by the classification rotor 47 works most naturally, so by controlling the rotation speed of the classification rotor 47,
The classification accuracy can be improved, and the quality of the crushed material 27 can be improved. In this crushing apparatus 1, if the crushing process is continued for a long time, the powder adheres to the filtering unit 40 (FIG. 2) to increase the pressure loss, and an error occurs in the measurement result of the first pressure measuring device 18, so that the filtration is performed. By periodically supplying the compressed air 44 to the portion 40 from the washing valve 43 to wash the filtering portion 40, the static pressure in the crushing chamber 11 can be accurately measured.
【００１８】また、この粉砕装置１では、分級機４６の
軸受けに圧縮空気４８が供給されるので、粉体が軸受け
に侵入するのを防止することができる。また、分級ロー
タ４７と粉砕室１１の間の隙間に圧縮空気４９が供給さ
れるので、粉砕室１１内の粗粉が排気配管２８側に流れ
出すのを防止できる。尚、この粉砕装置１では、上述の
ように粉砕室１１内の静圧を直接的に第１圧力測定器１
８で測定し、この測定結果に基づいて排気量調節弁３０
を調節する他に、出口配管２２に取り付けられた第２圧
力測定器２４の測定結果に基づいて排気量調節弁３０を
制御し、粉砕室１１内の静圧を「０」にすることもでき
る。Further, in the crushing apparatus 1, since the compressed air 48 is supplied to the bearing of the classifier 46, it is possible to prevent the powder from entering the bearing. Further, since the compressed air 49 is supplied to the gap between the classification rotor 47 and the crushing chamber 11, it is possible to prevent the coarse powder in the crushing chamber 11 from flowing out to the exhaust pipe 28 side. In the crushing device 1, the static pressure in the crushing chamber 11 is directly measured by the first pressure measuring device 1 as described above.
8 and the displacement control valve 30 based on this measurement result.
In addition to adjusting, the exhaust pressure control valve 30 may be controlled based on the measurement result of the second pressure measuring device 24 attached to the outlet pipe 22 to set the static pressure in the crushing chamber 11 to "0". .
【００１９】すなわち、第２圧力測定器２４が取り付け
られた出口配管２２の静圧は、粉砕室１１内の静圧と、
分級機４６の分級ロータ４７及び分級ロータ４７から第
２圧力測定器２４までの配管２８の圧力損失とを加算し
たものであるから、粉砕室１１内の静圧を「０」にする
ためには、出口配管２２の静圧が上述の圧力損失分だけ
負圧になるように、排気量調節弁３０を制御すればよい
のである。第２圧力測定器２４は、出口配管２２の途中
に取り付けられるので、粉砕室１１内の静圧を直接測定
する場合に比べて、容易に取り付けることができるし、
濾過部４０や洗浄弁４３を必要としないので簡単であ
る。That is, the static pressure of the outlet pipe 22 to which the second pressure measuring device 24 is attached is equal to the static pressure in the crushing chamber 11.
Since it is obtained by adding the pressure loss of the classifying rotor 47 of the classifier 46 and the pipe 28 from the classifying rotor 47 to the second pressure measuring device 24, in order to make the static pressure in the crushing chamber 11 "0". The exhaust amount control valve 30 may be controlled so that the static pressure of the outlet pipe 22 becomes a negative pressure by the above-mentioned pressure loss. Since the second pressure measuring device 24 is attached in the middle of the outlet pipe 22, it can be easily attached compared to the case where the static pressure in the crushing chamber 11 is directly measured.
It is simple because it does not require the filtering unit 40 or the washing valve 43.
【００２０】[0020]
【実施例】以下のような粉砕装置１を用いて粉砕実験し
た結果を次に説明する。 粉砕室１１の内容積：２４リットル 粉砕ノズル１２：直径４ｍｍ×３本、圧縮空気圧力６kg
ｆ／ｃｍ2Ｇ、風量２．９Ｎｍ3／ｍｉｎ 圧縮空気４８：圧力０．５kgｆ／ｃｍ2Ｇ、風量０．４
Ｎｍ3／ｍｉｎ 圧縮空気４９：圧力０．２５kgｆ／ｃｍ2Ｇ、風量1．６
Ｎｍ3／ｍｉｎ 総使用風量：４．９Ｎｍ3／ｍｉｎ 分級機４６：分級ロータ４７の直径１００ｍｍ、最高回
転数１０８００ｒｐｍ（周速５６．５ｍ／ｓ）、モータ
３．７ｋｗ 原料供給ホッパ１３：容積２０リットル 原料供給装置１４：ロータリフィーダ８０Ａ×０．４Ｋ
Ｗ 製品捕集装置２５：サイクロン 内径２４９ｍｍ×長さ
８１１ｍｍ 排気装置２９：１５ｋｗ×４Ｐ、１５ｍ3／ｍｉｎ、−
２０００ｍｍＡｑ 原料１６：スチレンアクリル共重合樹脂８５％とカーボ
ン１５％とを混合加熱混練後、カッターミルで粉砕した
トナーフレークを、ターボミルで平均粒径１１．８μｍ
に予備粉砕したトナーパウダを使用 以上の条件で分級ロータ４７の周速を変えたときの完砕
物２７の平均粒径を表１に示す。表１から分かるよう
に、分級ロータ４７の周速が速くなるほど完砕物２７の
平均粒径が小さくなる。EXAMPLES The results of a crushing experiment using the crushing device 1 as described below will be described below. Internal volume of crushing chamber 11: 24 liters, crushing nozzle 12: diameter 4 mm x 3, compressed air pressure 6 kg
f / cm 2 G, flow rate 2.9 nm 3 / min compressed air 48: Pressure 0.5kgf / cm 2 G, flow rate 0.4
Nm 3 / min Compressed air 49: Pressure 0.25 kgf / cm 2 G, air volume 1.6
Nm 3 / min total used air volume: 4.9 nm 3 / min classifier 46: Diameter 100mm of the classifying rotor 47, the maximum rotational speed 10800Rpm (peripheral speed 56.5m / s), the motor 3.7kw material supply hopper 13: Volume 20 Liter raw material supply device 14: rotary feeder 80A × 0.4K
W product collection device 25: cyclone inner diameter 249 mm x length 811 mm exhaust device 29: 15 kw x 4 P, 15 m 3 / min,-
2000 mmAq Raw material 16: Styrene-acrylic copolymer resin 85% and carbon 15% are mixed and heated and kneaded, and toner flakes crushed by a cutter mill are then averaged by a turbo mill to have an average particle size of 11.8 μm.
Table 1 shows the average particle size of the completely crushed product 27 when the peripheral speed of the classification rotor 47 was changed under the above conditions. As can be seen from Table 1, the higher the peripheral speed of the classification rotor 47, the smaller the average particle size of the crushed material 27.
【００２１】[0021]
【表１】 [Table 1]
【００２２】次に、上述の粉砕装置１を用いて行った粉
砕実験の結果について説明する。ここでは、粉砕ノズル
１２から噴出される圧縮空気５０の圧力を６ｋｇ／ｃｍ
2、分級ロータ４７の回転数を１００００ｒｐｍとし、
原料１６であるトナーパウダを５ｋｇ／ｈで粉砕室１１
に供給した。そして、粉砕室１１内の静圧を＋３００ｍ
ｍＡｑ、＋１５０ｍｍＡｑ、０ｍＡｑ、−１５０ｍＡ
ｑ、−３００ｍＡｑの５種類に変え、各圧力において運
転開始から２０分以降で３０分以内に完砕物２７の一部
を採取した。完砕物２７の粒度及び１０μｍ残分の測定
は、コールタールエレクトロニクス社製のコールタール
カウンタマルチサイザIIを用いた。測定結果を表２に示
す。Next, the results of a crushing experiment conducted using the above crusher 1 will be described. Here, the pressure of the compressed air 50 ejected from the crushing nozzle 12 is 6 kg / cm.
2 , the rotation speed of the classification rotor 47 is 10,000 rpm,
Toner powder, which is the raw material 16, is crushed in the crushing chamber 11 at 5 kg / h.
Supplied. And the static pressure in the crushing chamber 11 is +300 m
mAq, +150 mmAq, 0 mAq, -150 mA
q and -300 mAq were changed to 5 types, and at each pressure, a part of the complete crushed product 27 was collected within 20 minutes after the start of operation and within 30 minutes. The particle size and the 10 μm residue of the crushed product 27 were measured using a coal tar counter multisizer II manufactured by Coal Tar Electronics. Table 2 shows the measurement results.
【００２３】[0023]
【表２】 [Table 2]
【００２４】表２から、粉砕室１１内の静圧が「０」の
場合、完砕物２７の粒径が最も小さくなり、しかも１０
μｍ残分が最も少なくなることが分かる。言い換えれ
ば、粉砕室１１内の静圧が「０」から離れるほど、完砕
物２７中に粗い粒子が混入して、製品の品質が悪くな
る。また、粉砕室１１内の圧力を上げ過ぎると、原料供
給口から粉体が逆流してしまうことがあるので、注意が
必要である。From Table 2, when the static pressure in the crushing chamber 11 is "0", the particle size of the completely crushed product 27 becomes the smallest, and 10
It can be seen that the μm residue is the smallest. In other words, the farther the static pressure in the crushing chamber 11 is from "0", the coarser particles are mixed into the completely crushed product 27, and the quality of the product deteriorates. In addition, if the pressure in the crushing chamber 11 is raised too much, the powder may flow back from the raw material supply port, so be careful.
【００２５】上述の実験とは別に、出口配管２２の途中
の静圧を第２圧力測定器２４で測定して上述と同様な粉
砕実験を行った結果、問題がないことを確認した。第２
圧力測定器２４による場合は、測定部に粉体が付着する
ようなことがないので、洗浄作業などが不要になり、粉
砕処理を連続的に行うことが可能になる。但し、この場
合には、表３に示すように分級ロータ４７の回転数に応
じた圧力損失が発生するので、この圧力損失分を見込ん
で排気量調節弁３０の弁開度を制御する必要がある。Separately from the above experiment, the static pressure in the middle of the outlet pipe 22 was measured by the second pressure measuring device 24 and the same crushing experiment as the above was conducted. As a result, it was confirmed that there was no problem. Second
In the case of using the pressure measuring device 24, since powder does not adhere to the measuring portion, cleaning work etc. is not necessary, and the crushing process can be continuously performed. However, in this case, as shown in Table 3, pressure loss occurs according to the number of rotations of the classification rotor 47, and therefore it is necessary to control the valve opening degree of the exhaust amount control valve 30 in consideration of this pressure loss. is there.
【００２６】[0026]
【表３】 [Table 3]
【００２７】以上のように、この粉砕装置１では、粉砕
室１１の側壁に取り付けた第１圧力測定器１８、又は粉
砕室１１の出口配管２２に取り付けた第２圧力測定器２
４の検出結果に基づいて排気量調節弁側３０の弁開度を
調節し、粉砕室１１内の静圧が「０」になるように制御
するので、粉砕ノズル１２、１２から噴出される圧縮空
気５０、５０に外部の圧力が作用しなくなり、原料１６
の粉砕が効率よく行われるようになる。また、分級ロー
タ４７の分級作用が正常になり、これによって、完砕物
２７の分級精度が向上し、製品の品質を上げることがで
きる。As described above, in the crushing device 1, the first pressure measuring device 18 attached to the side wall of the crushing chamber 11 or the second pressure measuring device 2 attached to the outlet pipe 22 of the crushing chamber 11 is used.
Since the valve opening degree of the exhaust amount control valve side 30 is adjusted based on the detection result of No. 4 and the static pressure in the crushing chamber 11 is controlled to be "0", the compression sprayed from the crushing nozzles 12, 12 is compressed. External pressure does not act on the air 50, 50, and the raw material 16
The pulverization will be performed efficiently. Further, the classification action of the classification rotor 47 becomes normal, which improves the classification accuracy of the completely crushed material 27 and improves the quality of the product.
【００２８】[0028]
【発明の効果】以上述べたように、本発明は、分級機を
内蔵する気流式粉砕機の制御方法において、粉砕室の内
部圧力を測定し、前記内部圧力に基づいて前記粉砕室の
排気条件を制御するので、粉砕室の排気条件を変えるこ
とにより、粉砕室の内部圧力を変えて、粉砕室内の原料
に対する粉砕用の圧縮空気の作用を変えることができ、
これによって、粉砕効率が最も高い条件を選択すること
が可能になる。As described above, according to the present invention, in the method for controlling an air flow type crusher having a classifier, the internal pressure of the crushing chamber is measured, and the exhaust condition of the crushing chamber is measured based on the internal pressure. By controlling the exhaust conditions of the crushing chamber, it is possible to change the internal pressure of the crushing chamber and change the action of the compressed air for crushing on the raw material in the crushing chamber.
This makes it possible to select the condition with the highest grinding efficiency.
【００２９】また、本発明は、分級機を内蔵する気流式
粉砕機の制御装置において、粉砕室の壁面に内部圧力を
測定する静圧検出手段を取り付けたので、粉砕室内の圧
力を直接測定することができる。又、本発明は、前記静
圧検出手段の検出結果が「０」になるように前記粉砕室
の排気条件を設定することによって、圧縮空気による原
料の粉砕作用を安定して行うことができる。Further, according to the present invention, in the control device of the air flow type pulverizer having the built-in classifier, since the static pressure detecting means for measuring the internal pressure is attached to the wall surface of the pulverizing chamber, the pressure in the pulverizing chamber is directly measured. be able to. Further, according to the present invention, the crushing action of the raw material by the compressed air can be stably carried out by setting the exhaust condition of the crushing chamber so that the detection result of the static pressure detecting means becomes "0".
【００３０】更に、本発明は、分級機を内蔵する気流式
粉砕機の制御装置において、粉砕室の出口配管系に静圧
検出手段を取り付けたので、粉砕室の出口配管系の圧力
を測定し、この圧力に粉砕室から圧力測定点までの圧力
損失を加えることによって、粉砕室の圧力を算出するこ
とができ、粉砕室の圧力を「０」にすることは、出口配
管系の圧尾力を、粉砕室から圧力測定点までの圧力損失
分だけ負にすることを意味するので、制御はよりやり易
くなる。Further, according to the present invention, in the controller for the air flow type crusher having the built-in classifier, since the static pressure detecting means is attached to the outlet pipe system of the crushing chamber, the pressure of the outlet pipe system of the crushing chamber is measured. , The pressure in the crushing chamber can be calculated by adding the pressure loss from the crushing chamber to the pressure measurement point to this pressure, and setting the pressure in the crushing chamber to "0" means the tail force of the outlet piping system. Means to be negative by the amount of pressure loss from the crushing chamber to the pressure measurement point, so that control becomes easier.
【図１】本発明に係わる分級機を内蔵した気流式粉砕機
の制御装置を適用した粉砕装置の構成図である。FIG. 1 is a configuration diagram of a crushing device to which a control device of an air flow type crusher including a classifier according to the present invention is applied.
【図２】本発明に係わる気流式粉砕機の構成図である。FIG. 2 is a configuration diagram of an airflow type crusher according to the present invention.
１ 粉砕装置 １０ 気流式粉砕機 １１ 粉砕室 １８ 第１圧力測定器 １９ 制御部 ２２ 出口配管 ２４ 第２圧力測定器 ３０ 排気量調節弁 ３１ 排気量検出器 ４６ 分級機 ４７ 分級ロータ DESCRIPTION OF SYMBOLS 1 Crushing device 10 Airflow type crusher 11 Crushing chamber 18 1st pressure measuring instrument 19 Control part 22 Outlet piping 24 2nd pressure measuring instrument 30 Exhaust amount control valve 31 Exhaust amount detector 46 Classifier 47 Classification rotor
Claims (4)
法において、 粉砕室の内部圧力を測定し、 前記内部圧力に基づいて前記粉砕室の排気条件を制御す
ることを特徴とする分級機を内蔵した気流式粉砕機の制
御方法。1. A method for controlling an air flow type crusher having a built-in classifier, wherein an internal pressure of the crushing chamber is measured, and an exhaust condition of the crushing chamber is controlled based on the internal pressure. Control method of air flow type crusher with built-in.
なるように前記粉砕室の排気条件を設定することを特徴
とする請求項１記載の分級機を内蔵した気流式粉砕機の
制御方法。2. An air flow type crusher with a built-in classifier according to claim 1, wherein the exhaust condition of the crushing chamber is set so that the detection result of the static pressure detecting means becomes "0". Control method.
置において、 粉砕室の壁面に内部圧力を測定する静圧検出手段を取り
付けたことを特徴とする分級機を内蔵した気流式粉砕機
の制御装置。3. An air flow type crusher having a built-in classifier, wherein a static pressure detecting means for measuring an internal pressure is attached to a wall surface of the crushing chamber in a control device of the air flow type crusher having a built-in classifier. Control device.
置において、 粉砕室の出口配管系に内部圧力を測定する静圧検出手段
を取り付けたことを特徴とする分級機を内蔵した気流式
粉砕機の制御装置。4. An air flow type air conditioner having a built-in classifier, characterized in that a static pressure detecting means for measuring an internal pressure is attached to an outlet pipe system of the grinding chamber in a control device of an air flow type crusher having a built-in classifier. Crusher control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32051295A JPH09155222A (en) | 1995-12-08 | 1995-12-08 | Control method and device for air flow type crusher with built-in classifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32051295A JPH09155222A (en) | 1995-12-08 | 1995-12-08 | Control method and device for air flow type crusher with built-in classifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09155222A true JPH09155222A (en) | 1997-06-17 |
Family
ID=18122281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32051295A Pending JPH09155222A (en) | 1995-12-08 | 1995-12-08 | Control method and device for air flow type crusher with built-in classifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09155222A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001149809A (en) * | 1999-11-29 | 2001-06-05 | Bridgestone Corp | High-pressure air-flow crusher |
| JP2002126560A (en) * | 2000-10-19 | 2002-05-08 | Mitsui Mining Co Ltd | Grinding method |
| JP2016036764A (en) * | 2014-08-07 | 2016-03-22 | ミナミ産業株式会社 | Pneumatic pulverization device and low temperature pulverization method using the same |
| JP2017127824A (en) * | 2016-01-21 | 2017-07-27 | 堺化学工業株式会社 | Powder grinding method and powder grinding apparatus |
| CN115870063A (en) * | 2022-11-11 | 2023-03-31 | 北京协同创新食品科技有限公司 | Semi-dry rice noodle production system and method |
| CN119425912A (en) * | 2024-11-25 | 2025-02-14 | 安徽芝神堂药业有限公司 | A wall-breaking device and a method for preparing energy-saving ganoderma lucidum spore powder |
-
1995
- 1995-12-08 JP JP32051295A patent/JPH09155222A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001149809A (en) * | 1999-11-29 | 2001-06-05 | Bridgestone Corp | High-pressure air-flow crusher |
| JP2002126560A (en) * | 2000-10-19 | 2002-05-08 | Mitsui Mining Co Ltd | Grinding method |
| JP2016036764A (en) * | 2014-08-07 | 2016-03-22 | ミナミ産業株式会社 | Pneumatic pulverization device and low temperature pulverization method using the same |
| JP2017127824A (en) * | 2016-01-21 | 2017-07-27 | 堺化学工業株式会社 | Powder grinding method and powder grinding apparatus |
| WO2017126470A1 (en) * | 2016-01-21 | 2017-07-27 | 堺化学工業株式会社 | Powder grinding method and powder grinding machine |
| EP3406343A4 (en) * | 2016-01-21 | 2019-10-23 | Sakai Chemical Industry Co., Ltd. | PROCESS AND POWDER MILLING MACHINE |
| TWI702086B (en) * | 2016-01-21 | 2020-08-21 | 日商堺化學工業股份有限公司 | Powder crushing method and powder crushing device |
| US11045815B2 (en) | 2016-01-21 | 2021-06-29 | Sakai Chemical Industry Co., Ltd. | Powder grinding method and powder grinding machine |
| CN115870063A (en) * | 2022-11-11 | 2023-03-31 | 北京协同创新食品科技有限公司 | Semi-dry rice noodle production system and method |
| CN119425912A (en) * | 2024-11-25 | 2025-02-14 | 安徽芝神堂药业有限公司 | A wall-breaking device and a method for preparing energy-saving ganoderma lucidum spore powder |
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