JPS5875218A - Method of distributing quantity of bulk material air-blown through supply tube - Google Patents
Method of distributing quantity of bulk material air-blown through supply tubeInfo
- Publication number
- JPS5875218A JPS5875218A JP57149036A JP14903682A JPS5875218A JP S5875218 A JPS5875218 A JP S5875218A JP 57149036 A JP57149036 A JP 57149036A JP 14903682 A JP14903682 A JP 14903682A JP S5875218 A JPS5875218 A JP S5875218A
- Authority
- JP
- Japan
- Prior art keywords
- differential pressure
- bulk material
- pressure
- instantaneous value
- target value
- 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.)
- Pending
Links
- 239000013590 bulk material Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 13
- 239000012159 carrier gas Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
- B05B7/1413—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising a container fixed to the discharge device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
- B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0605—Control of flow characterised by the use of electric means specially adapted for solid materials
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、所定の管区分間の差圧の測定、同瞬間値の差
圧−目標値との比較及び補正量とし送ガスによって供給
管中を風送されるばら材料を配量する方法に関する・
本発明方法は下記の認識に基く。搬送ガスの流量、又従
って搬送ガスの流速が一定の場合には、供給管内の二点
間の圧力損失は−ある一定のばら材料において−、搬送
ガス流中へのばら材料の供給量（μ）にのみ依存する・
従ってばら材料の配量、すなわち単位時間当りの所定の
ばら材料送り量の保持、換言すれば一定の供給量（μ）
の保持のためには、差圧目標値と、測定された差圧瞬間
値との間の差をばら材料吐出４ｆｉｍ、Ｎｌｆロータリ
ーベーンスルースノ回転速度の補正値として使用し、そ
れによって、所定のばら材料送り量を一定に保持する制
御ループを得ることが出来る。単位時間当りの搬送ガス
量を一定に保持することは、制御ループの正しい機能に
とって必要な二つの前提条件の中の一つである・そして
それは搬送ガスを、一定圧力に保持されているサージタ
ンクからラノ々ル管を経て供給管中に供給する方法で行
われる・それというのも公知の様にう・ぐル管において
は、搬送ガス流は同前に入る前のガスの圧力に直接依存
するからである・制御ループの正しい機能にとっての第
二の前提条件は、供給管末端部における背圧が一定であ
ることであるＯ
同前提条件は大抵の場合にみたされる・それというのも
背圧は大気圧であるからである・しかし同前提条件がみ
たされない場合もある・例えば粉炭を一定の型の炉又は
石炭液化又は気化用の反応釜に風送供給する場合で、背
圧が高いばかりでなく、特に変動もする。その場合ｉｌ
１位時間当りのばら材料の吐出量を所定の１′１標値に
保持しなければならないが、冒頭に述べた方法でそれは
達成されない。それというのも背圧の変動によって、搬
送ガスの密度、従って容量が相当して変動するからであ
る。しかし管断面積が同じ場合、ガス容量が減少ずろど
、搬送ガス流の速度も減少する。ガス流速の減少によっ
て、所定の管区分間で−その他は同じ条件の場合−圧力
損失が小さくなる。それといつのも測定される差圧はガ
ス流速の函数であるからでル、ろ。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the measurement of the differential pressure between predetermined pipe sections, the comparison of the differential pressure of the same instantaneous value with the target value, and the measurement of the bulk material blown through the supply pipe by the gas supply as a correction amount. The method of the present invention is based on the following recognition. If the flow rate of the carrier gas, and therefore the velocity of the carrier gas, is constant, the pressure drop between two points in the feed pipe - for a given bulk material - is equal to the amount of bulk material fed into the carrier gas stream (μ ) depends only on
Therefore, the metering of bulk material, i.e. maintaining a predetermined feed rate of bulk material per unit time, in other words, a constant feed rate (μ)
In order to maintain the differential pressure, the difference between the differential pressure target value and the measured differential pressure instantaneous value is used as a correction value for the bulk material discharge 4fim, Nlf rotary vane thrusnow rotation speed, thereby ensuring that the predetermined A control loop can be obtained that keeps the bulk material feed rate constant. Maintaining a constant flow of carrier gas per unit time is one of the two prerequisites necessary for the correct functioning of the control loop; This is done by feeding the gas into the supply pipe via the Lanolle pipe.As is well known, in the Uguru pipe, the carrier gas flow is directly dependent on the pressure of the gas before it enters the pipe. The second prerequisite for the correct functioning of the control loop is that the back pressure at the end of the supply tube is constant. This precondition is met in most cases because This is because the back pressure is atmospheric pressure. However, there are cases in which the same precondition is not met. Not only is it expensive, but it is also particularly variable. In that case il
The quantity of bulk material discharged per hour must be maintained at a predetermined 1'1 target value, which is not achieved with the method described at the outset. This is because variations in the backpressure lead to corresponding variations in the density and therefore the volume of the carrier gas. However, for the same tube cross-sectional area, not only the gas capacity decreases, but the velocity of the carrier gas flow also decreases. The reduction in gas flow rate results in a lower pressure drop between a given tube section - other things being equal. Also, the differential pressure measured is always a function of the gas flow rate.
しかし装置が差圧の減少を材料供給１７１：の減少どし
で誤って伝え、補整のためにばら材料の吐出量の上昇が
行われ、それによって却位時間当りのばら材料の供給量
を一定に保持する所期の目的が達成されなくなる。However, the equipment misrepresents the decrease in differential pressure as a decrease in the material feed 171:, and to compensate, the bulk material output rate is increased, thereby keeping the bulk material feed rate per discharge time constant. The intended purpose of maintaining the system will no longer be achieved.
従って本発明の課題は、変動する背圧に対して供給を行
う場合にも、冒頭に述べた方法を適 ：（。Therefore, the object of the present invention is to apply the method described at the beginning even when supplying to fluctuating back pressures.
用可能にすることである。It is to make it possible to use it.
この課題は本発明により、供給管の末端部における背圧
に比例する圧力（Ｐ２）を測定し、それを瞬間値として
背圧−目標値（Ｐ）と比較し、同比較結果を補正量とし
て制御ループに供給する方法で解決される。This problem is solved by the present invention, which measures the pressure (P2) proportional to the back pressure at the end of the supply pipe, compares it as an instantaneous value with back pressure - target value (P), and uses the comparison result as a correction amount. The solution is to feed the control loop.
本発明のある有利な実施形式においては、補正量を差圧
−瞬間値の補正のために使用する。In one advantageous embodiment of the invention, a correction variable is used for correcting the instantaneous value of the differential pressure.
別の有利な実施形式においては、補正量を差圧−瞬間値
測定のために、側圧力（ｐ、、Ｐｌりの中の一方を補正
するために使用する。更に別の有利な実施形式において
は、材料の所望の供給量（μ）を第二補正量として、差
圧−目標値にも、又差圧−瞬間値にも結合する。In a further advantageous embodiment, the correction quantity is used for correcting one of the side pressures (p, Pl) for the differential pressure instantaneous value measurement. is coupled to the desired feed rate (μ) of material as a second correction variable both to the differential pressure-setpoint value and also to the differential pressure-instantaneous value.
本発明方法は、背圧と所与の管区分間で測定した差圧と
の間の間係は、供給量μを・Ｑラメータとするカーブ群
の形で表わすことが出来るという認識に基（。通常の場
合には、全（一定の供給量が定められ、それを保持すべ
きであるから、それらのカーブ群から、該当する供給量
に相当するカーブを選ぶことが出来ろ。更に通常は背圧
の目標値も既知である。選択したカーブの一点がその背
圧に相当ずろ。いずれのカーブも勾配変化は比較的小さ
いから、決定した点におけるカーブの勾配を、背圧−目
標値と背圧−瞬間値との間の差から補正量を求めるため
の比例定数として使用することが出来ろ。The method of the invention is based on the recognition that the relationship between the back pressure and the differential pressure measured between a given pipe section can be expressed in the form of a family of curves with the supply quantity μ in the Q parameter. In normal cases, a constant supply amount is determined and should be maintained, so a curve corresponding to the relevant supply amount can be selected from a group of curves. The target value of the pressure is also known. One point on the selected curve is offset by the amount of back pressure. Since the change in slope of each curve is relatively small, the slope of the curve at the determined point is calculated by calculating the difference between back pressure - target value and back pressure. It can be used as a proportionality constant to determine the correction amount from the difference between the pressure and the instantaneous value.
本発明方法を以下に図面を参照して詳述する。The method of the present invention will be explained in detail below with reference to the drawings.
第１図中、サイロ２から吐出されろ、粉炭が風送供給管
３を通り、バーナー１に供給されろ。In FIG. 1, powdered coal is discharged from a silo 2, passes through a blower supply pipe 3, and is supplied to a burner 1.
そのために送風機生から供給管δ中に、上記したやり方
で、搬送ガス流が送られろ。その流速は少なくとも供給
管の最初の部分では一定である。粉炭はサイロ２から自
体公知の方法で、モーター６によって駆動されろロータ
リーベーンスルース５を経て供給管δ中に吐出されろ。For this purpose, a carrier gas stream is sent from the blower raw into the supply pipe δ in the manner described above. The flow rate is constant at least in the first part of the supply tube. The pulverized coal is discharged from the silo 2 in a manner known per se via a rotary vane sluice 5 driven by a motor 6 into a feed pipe δ.
単位時間当りにバーナーに供給されるばら拐料の量を所
定の一定量に保持するために、供給管の位置３ａにおい
て圧力Ｐ１を、又位置３ ｂにおいて圧力Ｐ２を測定す
る。その場合圧力Ｐ２は、供給管の末端部においてバー
ナー］中に存在する背圧Ｐに比例して変動する。そのた
め圧力Ｐ２はスイッチ装置７において、背圧Ｐの変動分
を補正した圧力Ｐ（に修正される。それを行わない場合
には、変動する背圧によって、実際には存在しない供給
量の変動があたかもあるかの様に誤られるからである。In order to maintain the amount of bulk material supplied to the burner per unit time at a predetermined constant amount, pressure P1 is measured at position 3a of the supply pipe and pressure P2 at position 3b. The pressure P2 then varies in proportion to the back pressure P existing in the burner at the end of the feed pipe. Therefore, the pressure P2 is corrected in the switch device 7 to the pressure P (which is corrected for the fluctuation in the back pressure P. If this is not done, the fluctuating back pressure will cause fluctuations in the supply amount that do not actually exist. This is because it is mistaken as if it were.
同補正は式： ％式％（） により行われろ。The correction is done by the formula: %formula%() It should be done by.
そのためにスイッチ装置７には、一方では背圧Ｐの目標
値が、又他方では供給量μの目標値が、それぞれ相当す
る目標値調整装置８及び９かも供給される。For this purpose, the switching device 7 is also supplied with corresponding setpoint value adjusting devices 8 and 9, on the one hand, a setpoint value for the backpressure P, and, on the other hand, a setpoint value for the supply quantity μ, respectively.
圧力Ｐ８及びＰ≦から、減算装置１０中で補正差圧△ｐ
′が形成され、それが瞬間値として比較器１１に供給さ
れろ。比較器１１は目標値調整装置１２から目標値△ｐ
を得、他方目標値調整装置１２は目標値調整装置９から
目標値μを得る。それというのも差圧△ｐの目標値は、
第２図に示されて（・ろ様に、背圧Ｐにのみならず、供
給量μにも依存するからである。比較器１１はその出力
側で補正量ｎを供給ずろ。同補正量が、ロータリーベー
ンスルース５を駆動スるモータ−６０回転速度を調整し
て、供給量の偏差を小さくずろ。From the pressures P8 and P≦, the corrected differential pressure △p is calculated in the subtraction device 10.
' is formed and fed to the comparator 11 as an instantaneous value. The comparator 11 receives the target value Δp from the target value adjustment device 12.
On the other hand, the target value adjustment device 12 obtains the target value μ from the target value adjustment device 9. This is because the target value of differential pressure △p is
This is because it depends not only on the back pressure P but also on the supply amount μ, as shown in FIG. However, the rotational speed of the motor 60 that drives the rotary vane sluice 5 is adjusted to reduce the deviation in the supply amount.
上記の方法は簡単化した形式でも行うことが出来る。す
なわち、装置に適用されろ供給量μの範囲が過度に大き
くない場合には、「１標値調整装置９を省略することが
出来る。その場合は、その都度の供給量は差圧△ｐ用の
目標値調整装置１２のみを経て与えられる。そ１〜てＰ
２のＰ≦への補正のためには、上記の方程式においてフ
ァクターｆ（μ）が定数と見なされろ。The above method can also be performed in a simplified form. That is, if the range of the supply amount μ applied to the device is not excessively large, the standard value adjustment device 9 can be omitted. It is given only through the target value adjustment device 12.
For the correction of P≦2, consider the factor f(μ) as a constant in the above equation.
最も簡単な場合、特に背圧Ｐが比較的狭い限界内でのみ
変動する場合には、ファクターｆ（Ｐ）も定数と見なし
得るから、上記の方程式は次の様に簡単化される：
Ｐ≦−Ｐ２・Ｋ
〔式中二には、Ｋ、（μ）・に２（Ｐ）である〕原則的
には、差圧Ｐ、 −Ｐ２−△１）の補正によるか、又は
補正量ｎのｎ′への直接補正によって、同じ結果の達成
、すなわち背圧Ｐの変動に無関係に配量な一定に保持す
ることも可能であるが、それによってより多くの量（例
えばｐ、）を嗣酌し、場合により共に補正しなければな
らないという別の問題が起る。In the simplest case, especially when the backpressure P varies only within relatively narrow limits, the factor f(P) can also be considered a constant, so the above equation is simplified to: P≦ -P2・K [The second in the formula is K, and (μ)・2(P)] In principle, it can be done by correcting the differential pressure P, -P2-△1) or by adjusting the correction amount n. It is also possible to achieve the same result by a direct correction to n', i.e. to keep it constant regardless of the fluctuations of the backpressure P, but thereby allowing for a larger quantity (e.g. p,). However, another problem arises in that both must be corrected in some cases.
第２図には、一定に保持した種々の供給量μにおけろ、
差圧へｐ＝ｐ、 ｐ２ と背圧Ｐの絶対値との関係が
示されている。所定の目標値からのＰの変動があまり太
き（ない場合、又装置に適用されるμの値の範囲があま
り広くない場合には、上記の補正の簡単化−それによれ
ば△ｐ二Ｐ −Ｋである−が許容されることが認められ
ろ。In Fig. 2, at various supply amounts μ held constant,
The relationship between the differential pressure p=p, p2 and the absolute value of the back pressure P is shown. If the variation of P from a predetermined target value is not too large, and if the range of values of μ applied to the device is not very wide, the above correction can be simplified - according to which △p2P It is recognized that -K is - is permissible.
第１図は本発明方法を実施するための装置の一実施形式
の略示図、第２図は差圧△ｐの背圧Ｐへの依存性を示す
図である。
１ バー−Ｊ−−１２・サイロ、３・・風送供給管、３
ａ 、 ３１） 圧力測定位置、４・・送風機、５
・・・ロータリーベーンスルース、６・モーター、７・
・・スイッチ装置、８，９．１２・・・目標値調整装置
、１］−・・・比較器
手 続・、・グ補 正 書（自発）
特許庁長官殿
１、事件の表示
昭和５７年特許願第 １４９０３６ 号２、発明の名
称
供給管中を風送されるばら材料の配量法３、補正をする
者
事件との関係 特許出願人
４、復代理人
図面FIG. 1 is a schematic diagram of one embodiment of an apparatus for carrying out the method of the invention, and FIG. 2 is a diagram showing the dependence of differential pressure Δp on back pressure P. 1 Bar-J--12, silo, 3... air supply pipe, 3
a, 31) Pressure measurement position, 4...Blower, 5
・・・Rotary vane sluice, 6・motor, 7・
...Switch device, 8,9.12...Target value adjustment device, 1] -...Comparator procedure...Gu amendment (spontaneous) Mr. Commissioner of the Patent Office 1, Indication of the incident 1982 Patent Application No. 149036 2, Name of the invention Method for dispensing bulk material air blown through a supply pipe 3, Relationship with the case of the person making the amendment Patent applicant 4, Sub-agent drawings
Claims (1)
標値との比較及び補正量としての同比較結果によるげら
材料吐出量の制御ループ内での調節により、単位時間当
シ一定量の搬送ガスによって供給管中を風送されるばら
材料を配量するに当り、供給管の末端部における背圧に
比例する圧力（Ｐ２）を測定し、それを瞬間値として背
圧−目標値（Ｐ）と比較し、同比較結果を補正量として
制御ループに供給することを特徴とする。供給管中を風
送されるばら材料の配量法。 ２、補正量を差圧−瞬間値の補正のために使用する。特
許請求の範囲第１項記載の方法・３ 補正量を差圧−瞬
間値測定のために、両正力（Ｐ、、Ｐ２）の一方を補正
するために使用する。特許請求の範囲第１項又は第２項
記載の方法。 ４、ばら材料の所望の供給量（μ）を第二補正量として
、差圧−目標値並びに差圧−瞬間値に結合する特許請求
の範囲第１項〜第３項のいずれか１項に記載の方法・[Claims] 1. Measurement of the differential pressure between predetermined pipe sections, comparison of the instantaneous value of the differential pressure with a target value, and adjustment of the eel material discharge rate within the control loop based on the comparison result as a correction amount. When dispensing bulk material to be blown through a supply pipe by a constant amount of carrier gas per unit time, the pressure (P2) proportional to the back pressure at the end of the supply pipe is measured and It is characterized in that it is compared with a back pressure-target value (P) as an instantaneous value, and the comparison result is supplied to a control loop as a correction amount. A method of dosing bulk material that is air blown through a supply pipe. 2. Use the correction amount to correct the differential pressure-instantaneous value. Method 3 according to claim 1: The correction amount is used to correct one of the two positive forces (P, , P2) for differential pressure-instantaneous value measurement. A method according to claim 1 or 2. 4. According to any one of claims 1 to 3, in which the desired supply amount (μ) of the bulk material is used as the second correction amount and is combined with the differential pressure-target value and the differential pressure-instantaneous value. How to describe/
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3134180A DE3134180C2 (en) | 1981-08-28 | 1981-08-28 | Method for dosing pneumatically transported bulk material |
| DE31341802 | 1981-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5875218A true JPS5875218A (en) | 1983-05-06 |
Family
ID=6140398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57149036A Pending JPS5875218A (en) | 1981-08-28 | 1982-08-27 | Method of distributing quantity of bulk material air-blown through supply tube |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5875218A (en) |
| BE (1) | BE894223A (en) |
| DE (1) | DE3134180C2 (en) |
| FR (1) | FR2511986A1 (en) |
| GB (1) | GB2106668B (en) |
| IT (1) | IT1152363B (en) |
| LU (1) | LU84353A1 (en) |
| NL (1) | NL8203106A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59124624A (en) * | 1982-12-27 | 1984-07-18 | Kawasaki Steel Corp | Method for distribution and transport of pulverized/ granular material |
| JPS61155124A (en) * | 1984-12-28 | 1986-07-14 | Kawasaki Steel Corp | Powdery granule quantitative transport controlling method |
| GB8528508D0 (en) * | 1985-11-20 | 1985-12-24 | Macawber Ltd Simon | Material conveying apparatus |
| DE3919744A1 (en) * | 1989-06-16 | 1990-12-20 | Rieter Ag Maschf | Carrier air control |
| US5143485A (en) * | 1989-06-16 | 1992-09-01 | Maschinenfabrik Rieter Ag | Transport air control |
| DE4325044C2 (en) * | 1993-07-26 | 2002-07-18 | Itw Gema Ag | Powder conveying device, in particular for coating powder |
| US5752788A (en) * | 1994-11-30 | 1998-05-19 | Nordson Corporation | System and method of pumping a constant volume of powder |
| DE19516627A1 (en) * | 1995-05-05 | 1996-11-07 | Ranco Inc | Method and device for controlling a process |
| DE19542787A1 (en) * | 1995-11-16 | 1997-05-22 | Wacker Chemie Gmbh | Self-regulating fluidised transport system |
| DE19900655C1 (en) * | 1999-01-11 | 2000-10-12 | Kurt Wolf Velco Ges Fuer Foerd | Bulk material transport equipment, especially for bulk material injection in metallurgical plants, has a flow and pressure monitoring system for regulating a deposit, blockage and coarse particle flushing gas system |
| DE10064655B4 (en) * | 2000-12-22 | 2012-01-26 | TRüTZSCHLER GMBH & CO. KG | Device for controlling the at least one card to be supplied amount of fiber flock |
| US7524146B2 (en) | 2006-11-30 | 2009-04-28 | William Jeffrey Peet | Pneumatic uneven flow factoring for particulate matter distribution system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5178362A (en) * | 1973-07-02 | 1976-07-07 | Pechiney Aluminium | |
| JPS5514409A (en) * | 1978-07-14 | 1980-01-31 | Babcock Hitachi Kk | Vent air processing system |
| JPS5653307A (en) * | 1979-10-02 | 1981-05-12 | Ube Ind Ltd | Combustion method for upright firing furnace and burner to execute the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB556864A (en) * | 1941-04-22 | 1943-10-26 | Bailey Meters Controls Ltd | Improvements in or relating to the control of apparatus for supplying pulverised gas-entrained solid material |
| LU82036A1 (en) * | 1979-12-27 | 1980-04-23 | Wurth Anciens Ets Paul | METHOD AND INSTALLATION FOR INJECTING QUANTITIES OF POWDERED MATERIALS BY PNEUMATIC ROUTE INTO A VARIABLE PRESSURE ENCLOSURE AND APPLICATION TO A TANK OVEN |
-
1981
- 1981-08-28 DE DE3134180A patent/DE3134180C2/en not_active Expired
-
1982
- 1982-08-05 NL NL8203106A patent/NL8203106A/en not_active Application Discontinuation
- 1982-08-12 IT IT22826/82A patent/IT1152363B/en active
- 1982-08-18 FR FR8214256A patent/FR2511986A1/en not_active Withdrawn
- 1982-08-24 GB GB08224234A patent/GB2106668B/en not_active Expired
- 1982-08-25 LU LU84353A patent/LU84353A1/en unknown
- 1982-08-27 JP JP57149036A patent/JPS5875218A/en active Pending
- 1982-08-27 BE BE0/208892A patent/BE894223A/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5178362A (en) * | 1973-07-02 | 1976-07-07 | Pechiney Aluminium | |
| JPS5514409A (en) * | 1978-07-14 | 1980-01-31 | Babcock Hitachi Kk | Vent air processing system |
| JPS5653307A (en) * | 1979-10-02 | 1981-05-12 | Ube Ind Ltd | Combustion method for upright firing furnace and burner to execute the same |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1152363B (en) | 1986-12-31 |
| DE3134180C2 (en) | 1983-11-24 |
| DE3134180A1 (en) | 1983-03-17 |
| IT8222826A0 (en) | 1982-08-12 |
| NL8203106A (en) | 1983-03-16 |
| GB2106668A (en) | 1983-04-13 |
| GB2106668B (en) | 1985-04-03 |
| FR2511986A1 (en) | 1983-03-04 |
| LU84353A1 (en) | 1983-02-28 |
| BE894223A (en) | 1982-12-16 |
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