JPS6144780B2 - - Google Patents
Info
- Publication number
- JPS6144780B2 JPS6144780B2 JP1321683A JP1321683A JPS6144780B2 JP S6144780 B2 JPS6144780 B2 JP S6144780B2 JP 1321683 A JP1321683 A JP 1321683A JP 1321683 A JP1321683 A JP 1321683A JP S6144780 B2 JPS6144780 B2 JP S6144780B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- scraper
- granular material
- resistance value
- supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000843 powder Substances 0.000 claims description 25
- 239000008187 granular material Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
- B65G65/4809—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis
- B65G65/4818—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and having the form of rotating tables or pans
- B65G65/4827—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially vertical axis and having the form of rotating tables or pans with particular surface features, e.g. ribs, roughening
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Flow Control (AREA)
Description
【発明の詳細な説明】
本発明は粉粒体の定量供給するための自動制御
方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic control method for quantitatively supplying powder or granular material.
従来の粉粒体定量供給方法は定量供給された粉
粒体をその排出シユート部において傾斜板によつ
て受圧させて、その受圧計測値に応じて電動モー
タを制御して供給量を増減させて定量供給させる
ものがあつた。これでは粉粒体の衝突時の衝撃も
加わるため、計測値が振動を引起し、適確な瞬間
供給量が計測できず、又、タイムラグを生じて応
答性が悪くなり正確な定量供給ができなかつた。
これとは別に定量供給される貯室全体の重量の変
化をロードセルで計測し、これを一定重量にする
様に制御することによつて定量供給する方法もあ
るが、これでは平均的な重量値しか計測できず瞬
間重量が計測しにくく且つ前例同様にタイムラグ
を生じて応答性が悪く正確な定量供給が達成でき
なかつた。本発明はかかる問題点を解消した新し
い構想の粉粒体定量供給制御方法を提供せんとす
るものである。 The conventional method for quantitatively supplying powder and granular materials involves receiving pressure on the supplied powder and granules by an inclined plate at the discharge chute, and controlling an electric motor to increase or decrease the supply amount according to the measured value of the received pressure. There was something to be supplied in quantity. In this case, the shock caused by the collision of the powder and granules is also applied, which causes vibration in the measured value, making it impossible to accurately measure the instantaneous supply amount.Also, a time lag occurs, resulting in poor response and an inability to accurately supply a fixed amount. Nakatsuta.
Another method is to use a load cell to measure changes in the weight of the entire storage chamber, which is then controlled to maintain a constant weight. However, it was difficult to measure the instantaneous weight, and as in the previous example, a time lag occurred, resulting in poor responsiveness and failure to achieve accurate quantitative supply. The present invention aims to provide a new method for controlling the quantitative supply of powder and granular material that solves these problems.
この発明は、粉粒体を収容した貯室１の底部に
環状溝２をもつ回転供給盤３を一部が貯室１の室
外に露出する状態に設け、同環状溝内に収容され
た粉粒体を室外の排出部４に配したスクレーパ５
によつて掻き出して粉粒体を定量供給する粉粒体
の定量供給方法に於いて、スクレーパ５に作用す
る抵抗を計測して、同抵抗値を該粉粒体の供給量
に応じた設定抵抗値となる様に回転供給盤３の回
転数（回転速度）を自動制御することを特徴とす
る粉粒体定量供給制御方法に係るものである。尚
図中６は排出シユート、７は撹拌羽根、８は同撹
拌羽根の駆動モータ、９は回転供給盤３の駆動モ
ータ、１０はスクレーパ５に作用する抵抗力又は
モーメントを感知するロードセル、１１は粉粒体
の種類、供給量に応じたスクレーパに作用する設
定抵抗値（設定荷重、設定モーメント値）を予め
実験して、あるいは計算して記憶させた設定抵抗
値記憶回路、１２はロードセル１０によつて感知
されたスクレーパ５に作用する抵抗値と設定抵抗
値記憶回路の設定抵抗値とを比較する比較回路、
１３は同比較回路によつて比較された差分に応じ
て計測抵抗値が設定抵抗値となる様に回転供給盤
３の駆動モータ９の回転数Ｎを制御する制御回
路、１４は設定抵抗値記憶回路１１の設定抵抗値
調整操作盤であつて、これによつて供給する供給
量の設定及び粉粒体の種類等に応じた調整入力を
行う。又１５はスクレーパ取付枢支軸、１６はロ
ードセル１０の取付フレームである。 This invention provides a rotary supply plate 3 having an annular groove 2 at the bottom of a storage chamber 1 containing powder and granules, with a part exposed to the outside of the storage chamber 1, and the powder stored in the annular groove. A scraper 5 disposing the granules in the outdoor discharge section 4
In the method of quantitatively supplying powder and granules by scraping and supplying a fixed amount of powder, the resistance acting on the scraper 5 is measured, and the resistance value is set as a set resistance according to the amount of powder and granules supplied. This relates to a method for controlling the quantitative supply of powder or granular material, which is characterized in that the number of rotations (rotational speed) of the rotary supply plate 3 is automatically controlled so as to achieve the desired value. In the figure, 6 is a discharge chute, 7 is a stirring blade, 8 is a drive motor for the stirring blade, 9 is a drive motor for the rotary supply plate 3, 10 is a load cell that senses the resistance force or moment acting on the scraper 5, and 11 is a load cell that senses the resistance force or moment acting on the scraper 5. A set resistance value memory circuit 12 stores a set resistance value (set load, set moment value) acting on the scraper according to the type of powder and the supply amount by experimenting or calculating in advance; a comparison circuit that compares the resistance value acting on the scraper 5 thus sensed and the set resistance value of the set resistance value storage circuit;
13 is a control circuit for controlling the rotation speed N of the drive motor 9 of the rotary supply board 3 so that the measured resistance value becomes the set resistance value according to the difference compared by the comparison circuit; 14 is a set resistance value memory This is an operation panel for adjusting the set resistance value of the circuit 11, and is used to set the supply amount and input adjustment according to the type of powder or granular material, etc. Further, 15 is a scraper mounting pivot shaft, and 16 is a mounting frame for the load cell 10.
この発明では貯室１内の粉粒体は回転供給盤の
環状溝２内に収容され、同回転供給盤の回転とと
もに回転して室外の排出部４に移送され、スクレ
ーパ５によつて掻き出され、排出部５の排出シユ
ート６に排出されるが、その単位時間当りの排出
量（供給量）Ｍは溝の断面積Ｓと回転数Ｎと粉粒
体の粉体密度ρ等の主要要素で決定される。一
方、スクレーパ５が粉粒体より受ける抵抗（押圧
力、モーメント）等は、その切り込み姿勢が一定
ならば粉体密度ρと粉体物質の固有比重γと回転
数Ｎとの関数であり、得に回転数Ｎの２又は３乗
に比例する。従つて計測抵抗値Ｒは同一粉粒体で
あれば回転数Ｎ（回転速度単位RPM）の関数と
なり、従つてスクレーパ５に作用する抵抗値が同
一であれば同一の排出量（供給量）Ｍ即ち定量の
供給量を維持できるものである。図面で示す実施
例ではスクレーパ５のロードセル１０によつて感
知されたスクレーパ５に作用する抵抗Ｒ（押圧又
はモーメント）を検出して比較回路１２に入力す
れば同比較回路１２において設定抵抗値記憶回路
１１からの設定抵抗値R0とを比較し、その差分
を出力して制御回路１３に入力して回転供給盤３
の回転数Ｎを変えてスクレーパ５に作用する抵抗
ＲをR0に収束する様に制御するものである。 In this invention, the powder in the storage chamber 1 is stored in the annular groove 2 of the rotary supply plate, rotates with the rotation of the rotary supply plate, is transferred to the outdoor discharge part 4, and is scraped out by the scraper 5. The discharge amount (supply amount) per unit time M depends on the main factors such as the cross-sectional area S of the groove, the rotation speed N, and the powder density ρ of the granular material. determined by On the other hand, the resistance (pushing force, moment) etc. that the scraper 5 receives from the powder is a function of the powder density ρ, the specific gravity γ of the powder, and the rotation speed N if the cutting posture is constant. is proportional to the second or third power of the rotation speed N. Therefore, the measured resistance value R is a function of the rotation speed N (rotation speed unit RPM) if the powder and granules are the same, and therefore, if the resistance value acting on the scraper 5 is the same, the discharge amount (supply amount) M is the same. In other words, it is possible to maintain a fixed amount of supply. In the embodiment shown in the drawings, if the resistance R (pressure or moment) acting on the scraper 5 sensed by the load cell 10 of the scraper 5 is detected and inputted to the comparison circuit 12, the comparison circuit 12 stores the set resistance value. The set resistance value R0 from 11 is compared, and the difference is outputted and inputted to the control circuit 13.
The rotational speed N of the scraper 5 is changed to control the resistance R acting on the scraper 5 so that it converges to R0 .
以上の様に本発明によればスクレーパ５の抵抗
値を感知するもので時間的に正確な検出が可能で
しかも回転供給盤の回転数以外の他の変動要素の
入る余地が少く正確な供給量の確定が行え、しか
もスクレーパ５での排出する瞬間での計測である
ので回転供給盤との回転数制御との間のタイムラ
グ（遅れ）がなく一定供給量への収束が迅速にな
され、追従性に優れたより高精度の定量供給を可
能とするものである。 As described above, according to the present invention, since the resistance value of the scraper 5 is sensed, accurate detection is possible in terms of time, and there is little room for other fluctuation factors other than the rotation speed of the rotary supply plate to enter, resulting in an accurate supply amount. Moreover, since the measurement is performed at the moment of discharge by the scraper 5, there is no time lag (delay) between the rotation speed control of the rotary supply board and the supply amount can be quickly converged to a constant supply amount, which improves followability. This enables highly accurate quantitative supply with excellent performance.
第１図は本発明粉粒体定量供給制御方法を示す
説明図、第２図は同要部を示す説明図、第３図は
同発明の実施例を示す回路図である。
１：貯室、２：環状溝、３：回転供給盤、４：
排出部、５：スクレーパ。
FIG. 1 is an explanatory diagram showing the method for controlling the quantitative supply of powder or granular material according to the present invention, FIG. 2 is an explanatory diagram showing the main parts thereof, and FIG. 3 is a circuit diagram showing an embodiment of the same invention. 1: Storage chamber, 2: Annular groove, 3: Rotating supply board, 4:
Discharge part, 5: Scraper.
Claims (1)
もつ回転供給盤３を一部が貯室１の室外に露出す
る状態に設け、同環状溝内に収容された粉粒体を
室外の排出部４に配したスクレーパ５によつて掻
き出して粉粒体を定量供給する粉粒体の定量供給
方法に於いて、スクレーパ５に作用する抵抗を計
測して、同抵抗値を該粉粒体の供給量量に応じた
設定抵抗値となる様に回転供給盤３の回転数を自
動制御することを特徴とする粉粒体定量供給制御
方法。1. A rotary supply plate 3 having an annular groove 2 is provided at the bottom of the storage chamber 1 containing powder and granular material, with a part exposed to the outside of the storage chamber 1, and the powder and granular material stored in the annular groove is provided. In a method for quantitatively supplying powder and granules by scraping them out with a scraper 5 placed in an outdoor discharge section 4, the resistance acting on the scraper 5 is measured, and the resistance value is calculated as the value of the powder. A method for controlling the quantitative supply of powder or granular material, characterized in that the number of revolutions of a rotary supply plate 3 is automatically controlled so that a set resistance value corresponds to the amount of granular material supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321683A JPS59138532A (en) | 1983-01-28 | 1983-01-28 | Granular powder quantitative supply control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1321683A JPS59138532A (en) | 1983-01-28 | 1983-01-28 | Granular powder quantitative supply control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59138532A JPS59138532A (en) | 1984-08-09 |
| JPS6144780B2 true JPS6144780B2 (en) | 1986-10-04 |
Family
ID=11826959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1321683A Granted JPS59138532A (en) | 1983-01-28 | 1983-01-28 | Granular powder quantitative supply control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59138532A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4039885B2 (en) * | 2002-05-17 | 2008-01-30 | 株式会社ヨシカワ | Powder and particle feeder |
| HK1077154A2 (en) | 2003-12-30 | 2006-02-03 | Vasogen Ireland Ltd | Valve assembly |
| US7803139B2 (en) | 2005-07-06 | 2010-09-28 | Icu Medical, Inc. | Medical connector with closeable male luer |
| JP5856037B2 (en) * | 2012-10-25 | 2016-02-09 | 株式会社ヨシカワ | Metering feeder |
| JP2021189123A (en) * | 2020-06-04 | 2021-12-13 | グローバルマテリアルズエンジニアリング株式会社 | Fixed-weight feeding device |
-
1983
- 1983-01-28 JP JP1321683A patent/JPS59138532A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59138532A (en) | 1984-08-09 |
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