JPS6031438A - High accurate exhausting device for pulverized or granular objects - Google Patents
High accurate exhausting device for pulverized or granular objectsInfo
- Publication number
- JPS6031438A JPS6031438A JP13950883A JP13950883A JPS6031438A JP S6031438 A JPS6031438 A JP S6031438A JP 13950883 A JP13950883 A JP 13950883A JP 13950883 A JP13950883 A JP 13950883A JP S6031438 A JPS6031438 A JP S6031438A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- tank
- output
- amount
- load cell
- 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.)
- Granted
Links
- 239000000843 powder Substances 0.000 claims description 15
- 239000008187 granular material Substances 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 3
- 230000004580 weight loss Effects 0.000 claims description 2
- 239000013585 weight reducing agent Substances 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract 2
- 238000005259 measurement Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
- B65G53/18—Gas pressure systems operating with fluidisation of the materials through a porous wall
- B65G53/22—Gas pressure systems operating with fluidisation of the materials through a porous wall the systems comprising a reservoir, e.g. a bunker
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flow Control (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、粉粒体排出装置としての加圧タンクから粉
粒体を所定の定流量又は所望の排出量で排出する場合排
出の全工程に亘って、その排出量に応じた精度で排出量
を制御できる高精度排出装置を提供するものである。DETAILED DESCRIPTION OF THE INVENTION When discharging powder and granular materials from a pressurized tank as a powder discharge device at a predetermined constant flow rate or a desired discharge amount, the discharge amount can be controlled over the entire discharge process. The present invention provides a high-precision ejection device that can control the amount of ejection with precision according to the amount of waste.
加圧タンクから例えば高炉の羽目、転炉等に粉粒体を吹
込むに際して、ロードセルで加圧タンクの重量を計測し
、その加圧タンクの亜酸変化率によって、加圧タンクの
切出ノズルからの粉粒体の切出量を制御することは公知
である。しかしながら、従来のロードセルはそれ自体は
非常に高感度のものであるが、その計測レンジは設計時
に所定の一定レンジに定められているものであるから、
設定切出量又は粉体比重がそのフルスケールレンジに合
致している場合は比較的精度よく計測°・できるが、設
定切出量が小さい時は精度が悪くなるという問題があっ
た。例えば、ロードセルレンジが０〜４，０００ｋｇの
ロードセルから得られる検出値の最小単位が２０ｋｇで
ある場合、設定切出量が４ 、 ＯＯＯｋｇ／ｗｉｎで
あれば、精度は１０．５％であるが、この同じロードセ
ルレンジで設定切出量が４００ ｋｇ／＋ｔｉｎの切出
制御をする場合には、その精度が１５％となり切出量が
小さい程精度が低下する欠点があった。When injecting granular material from a pressurized tank into the siding of a blast furnace, converter, etc., the weight of the pressurized tank is measured using a load cell, and the cutting nozzle of the pressurized tank is determined based on the nitrous acid change rate of the pressurized tank. It is known to control the amount of powder or granules cut out from. However, although conventional load cells themselves have very high sensitivity, their measurement range is set at a predetermined constant range at the time of design.
When the set cutting amount or powder specific gravity matches the full scale range, measurement can be performed with relatively high accuracy, but when the set cutting amount is small, there is a problem in that the accuracy deteriorates. For example, if the minimum unit of the detected value obtained from a load cell with a load cell range of 0 to 4,000 kg is 20 kg, and the set cutting amount is 4,000 kg/win, the accuracy is 10.5%, but When performing cutting control with a set cutting amount of 400 kg/+tin using the same load cell range, the accuracy was 15%, which had the disadvantage that the smaller the cutting amount, the lower the accuracy.
本発明は上述した従来の欠点を解消し、ロードセルの高
感度特性を利用して粉粒体の切出精度を１没定切出量の
大小にかかわらず一定にできる、高精度の切出排出装置
を提供するものである。The present invention solves the above-mentioned conventional drawbacks, and utilizes the high sensitivity characteristics of the load cell to achieve high-precision cutting and ejection that can maintain the cutting accuracy of powder and granular material constant regardless of the size of the cutting amount per immersion. It provides equipment.
］−記ト」的を達成するため、本発明は、切出量設定値
の大小に対応させた複数の計測レンジを有するロードセ
ル変換器を、備え、これらを切換えて切出排出−清を制
御し、さらに、加圧タンクから粉粒体を切出す切出ノズ
ルを複数として、これらを合流させ又は口径の異なる複
数本のノズルで構成し、切出量に応じてこれらを単独又
は組み合せて粉粒体を切出すようにしたものである。] - In order to achieve the above objectives, the present invention includes a load cell converter having a plurality of measurement ranges corresponding to the magnitude of the cutting amount set value, and controls cutting discharge and purification by switching these. Furthermore, a plurality of cutting nozzles are used to cut out powder and granular material from a pressurized tank, and these are combined or configured with multiple nozzles with different diameters, and these are used singly or in combination depending on the cutting amount. It is designed to cut out granules.
本発明における加圧タンクは、連続排出又はバッチ排出
のい【ずれにも適用しうるものである。The pressurized tank in the present invention can be applied to either continuous discharge or batch discharge.
また、切出ノズルとは、ノズル先端部のみでなく輸送管
に接続する部分までを含んで総称される。Moreover, the cutting nozzle is a general term that includes not only the tip of the nozzle but also the part that connects to the transport pipe.
以下、本発明を図面に示す一実施例にもとづいて説明す
る。The present invention will be described below based on an embodiment shown in the drawings.
第１図は、本発明を連続式加圧タンクに適用した実施例
を示し、加圧タンク（１）は、これの上方に配設した補
給タンク（２）に弁（３）、補給タンク（２）の重量を
加圧タンク（１）に伝達しないベローズ管（４）及び弁
（５）を介して接続され、弁（３）（５）が開閉操作さ
れて補給タンク（２）から加圧タンク（１）内へ粉粒体
が補給され、加圧タンク（１）の切出ノズル（６）から
連続的に粉粒体が切出される。FIG. 1 shows an embodiment in which the present invention is applied to a continuous pressurized tank. 2) is connected via a bellows pipe (4) and a valve (5) that do not transmit the weight of the tank (1) to the pressurized tank (1), and the valves (3) and (5) are opened and closed to pressurize the supply tank (2). The granular material is replenished into the tank (1), and the granular material is continuously cut out from the cutting nozzle (6) of the pressurized tank (1).
加圧タンク（１）の底部には加圧気体供給管（７）から
圧力調節弁（８）を介して加圧ガスが供給されて流動床
（１ａ）上に粉粒体を流動化させている。Pressurized gas is supplied to the bottom of the pressurized tank (1) from a pressurized gas supply pipe (7) via a pressure control valve (8) to fluidize the powder onto the fluidized bed (1a). There is.
ブースタ管（８）は気体供給管（７）と輸送管（１０）
との間に配管され輸送管（１０）は排出弁（６′）を介
してνＪ出ノズル（６）に接続されている。粉粒体切出
量は、加圧タンク（１）の重量をロードセル（１１）で
５Ｆ測し、この重量減量変化率即ちｖＣ量の時間微分値
か一定になるように調節される。Booster pipe (8) is connected to gas supply pipe (7) and transport pipe (10)
The transport pipe (10) is connected to the νJ output nozzle (6) via a discharge valve (6'). The amount of powder material to be cut out is adjusted so that the weight of the pressurized tank (1) is measured at 5F using a load cell (11), and the weight loss change rate, that is, the time differential value of the vC amount is constant.
即ち、粉粒体切出量はタンク内圧力つまり加圧気体供給
圧力をパラメータとしてブスター流量と比例関係にある
からブスター流量調節計（１２）の設定値として重量微
分値調節計（１３）の出力を供給することによって定流
量制御が可能になる。In other words, since the amount of powder cut out is proportional to the booster flow rate using the tank internal pressure, that is, the pressurized gas supply pressure as a parameter, the set value of the booster flow rate controller (12) is used as the output of the weight differential value controller (13). Constant flow control becomes possible by supplying
実施例では、輸送管中の固気比を一定にするために混合
比率設定器（１４）を介して供給している。In the embodiment, the mixture is supplied via a mixing ratio setting device (14) in order to keep the solid-gas ratio in the transport pipe constant.
（＋５ａ）（１５ｂ）（１５ｃ）は夫々計測レンジを異
にする変換器でありこれらの、計測範囲及びその倍率は
自由に設計できる。（１６）はν」換スイッチであり、
重量微分値調節計（１３）の設定値に連動して自動的に
切換わるようにすることも可能である。（１７）は微分
器を含む重量信号処理装置である。(+5a), (15b), and (15c) are converters having different measurement ranges, and these measurement ranges and their magnifications can be freely designed. (16) is a ν” conversion switch,
It is also possible to automatically switch in conjunction with the set value of the weight differential value controller (13). (17) is a weight signal processing device including a differentiator.
本発明装置の精度を前記例に従って説明すればνｊ出ｉ
４００ ｋｇ／ｌｎのときには変換器を切換えて１０
倍のレンジにして最小単位を２ｋｇとすることによって
精度を１０．５％とすることができ、切出量の大小に関
係なく排出量の制御を高精度で行なうことができる。な
お、タンク内粉粒体残量が少量になったときにレンジを
切換えて同様の効果を発揮させることもできる。To explain the accuracy of the device of the present invention according to the above example, νj output i
At 400 kg/ln, switch the converter to 10
By using a double range and setting the minimum unit to 2 kg, the accuracy can be increased to 10.5%, and the discharge amount can be controlled with high precision regardless of the size of the cut amount. Note that the same effect can be achieved by switching the range when the amount of powder or granular material remaining in the tank becomes small.
なお、ロードセル（１１）は例えば３点支持の場合は３
個共最大荷重で強度を設計し、変換器（複数）は切出量
設定値の大小に対応させたレンジ（フルスケール）とし
て調整したものを使用する。In addition, the load cell (11) is, for example, 3 points in the case of 3-point support.
The strength is designed for each individual maximum load, and the converters (multiple) are adjusted to have a range (full scale) corresponding to the size of the cutting amount setting value.
第２図の装置はバッチ式排出輸送装置において、複数の
切出ノズルを使用するものであり、従ってプスター管（
９）も複数になって並列切出しがイｊなわれるものであ
る。この場合において、切出排出ノズル（８ａ） （Ｂ
ｂ）は同径又は異径、（例えば２５Φ、及び５０Φ）と
して設定切出量即ち送給量に応じてこれらを単独又は組
合わせて使用する”ことができると−共に各輸送管（６
０Φ）を第２図鎖線の如く合流させて特定の供給端に接
続することか可能である。ブスター開閉弁（２０ａ）
（２０ｂ）及び排出弁（６ａ’ ）（８ｂ’ ）は切換
信号発生器（２１）からの信号によって連動して操作さ
れると共にブスター流量制御信号も切換器（２２）によ
って切換えられて供給されるように構成されている。The device shown in Fig. 2 is a batch-type discharge and transportation device that uses a plurality of cutting nozzles.
9) also has a plurality of lines, and parallel cutting is no longer possible. In this case, the cutting discharge nozzle (8a) (B
b) have the same diameter or different diameters (for example, 25Φ and 50Φ) and can be used alone or in combination depending on the set cutting amount, that is, the feeding amount.
0Φ) can be merged as shown by the chain line in FIG. 2 and connected to a specific supply end. Booster on-off valve (20a)
(20b) and the discharge valves (6a' and 8b') are operated in conjunction with the signal from the switching signal generator (21), and the booster flow control signal is also switched and supplied by the switching device (22). It is configured as follows.
この装置によれば各切出ノズルを切出設定量に応じて最
大（切出ノズルの総和排出量）から最小（最小径ノズル
の排出量）まで適宜切換えて有効使用することにより一
定の輸送効率を維持することができ、前記ロードセルレ
ンジの切換えと相俟って切出排出量の広い範囲に亘って
高精度の切出排出制御ができるのである。According to this device, each cutting nozzle is effectively switched from the maximum (total discharge amount of the cutting nozzles) to the minimum (the discharge amount of the smallest diameter nozzle) according to the set cutting amount, thereby achieving a certain transportation efficiency. can be maintained, and together with the switching of the load cell range, highly accurate cutting discharge control can be performed over a wide range of cutting discharge amounts.
なお、本装置によって、宏量計量輸送する場合全量の９
０％迄は大量輸送として設定しくノズル及びレンジを）
残り１０％を少量輸送レンジに切換えることによって高
精度計量排出ができる。In addition, when using this device for weighing and transporting the total amount, 9.
(Up to 0%, set the nozzle and range as mass transportation)
The remaining 10% can be weighed and discharged with high precision by switching to the small volume transport range.
更に本発明装置は、見掛比重の異なる粉粒体を１ノ１出
又は輸送する場合にもロードセルの計測レンジをすＪ換
えるだけで高精度制御ができるのであり、例えば見掛比
重が２ 、 Ｏｔ／ｍ’の粉粒体においてはＯ〜２，０
００ｋｇの計測レンジを対応させ、見掛比重０ 、５
ｔ／ｍ″の粉粒体には０〜５００ｋｇの計測レンジを対
応させる等その作業に便利なように種々な使用態様が考
えられる。Furthermore, the device of the present invention can perform highly accurate control by simply changing the measurement range of the load cell when discharging or transporting powder or granules with different apparent specific gravities one by one. O~2,0 for powder and granular material of Ot/m'
00kg measurement range, apparent specific gravity 0, 5
t/m'' powder and granular material can be used in various ways to make it convenient for the work, such as making it compatible with a measurement range of 0 to 500 kg.
第１図及び第２図は本発明装置の夫々の実施例系統図で
ある。
（６）は切出排出ノズル
（１１）はロードセル
（１５）は検出変換器
（１３）は重量微分値調節計
手続補正書
昭和５８年９月 ７日
特許庁長官 若杉和夫殿
１．４バ件の表示
昭和５８年特許願第１３９５０８号
２、発明の名称
高精度粉粒体排出装置
３、補ＩＥをする者
事件との関係 特許出願人
住 所 東京都千代田区有楽町１丁目４番１号名 称
デンカエンジニアリング 株式会社代表者 宮 武昭
亘
４、代理人
５、補正命令の日付け （自効
６、補正により増加する発明の数 ナシ７、補ＩＦの対
象
明細書中の発明の詳細な説明の欄。
８、補正の内容
別紙記載の通り。
補正書
特願昭５８−１３８５（１８”−
（１）明細書第３項第２行末尾の「検出」以下８行目ま
での記載を削除し、次のように訂正する。
［抵抗電圧変換出力の最小単位が２０ｋｇである場合、
設定する切出量を４００ ｋｇ／ｆｆ１ｉｎと仮定する
と最小単位の重量変化を検出するのに要する時間は
２０ ｋｇ＋ ４００ ｋｇ／ｍ１ｎ＝ ３ ｓｅｃで
あるのに対し、切出量を４ Ｑ ｌａｇ／ｗｉｎと仮定
すると、前記検出時間は
２０ｋｇ÷４０ ｋｇ／ｍ１ｎ＝ ３０ ｓｅｃとなる
。
つまり、上記の例の場合、切出量が４０ ｋｇ／ｍ１ｎ
のときは４００ ｋｇ／ｆｌＩｉｎのときに比較して１
０倍の検出時間を要するのである。このため切出−１−
を等時間間隔で計測した場合、４０ ｋｇ／ｓｉｎのと
きは検出点数が少ないから、切出量を制御する場合にお
いては、その精度がｌ／１０に・低ドすることになる。
」
（２）仝第６項第３行中「にょって〜することができ」
゛を削除し、次の文を挿入する。
「によって重ψ変化の検出時間を１／１０に短縮するこ
とができ」
以 上1 and 2 are system diagrams of respective embodiments of the apparatus of the present invention. (6) is the cut-out discharge nozzle (11) is the load cell (15) is the detection converter (13) is the weight differential value controller Procedural amendment document September 7, 1981 Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1.4 cases Display of 1982 Patent Application No. 139508 2, Title of invention: High-precision granular material discharge device 3, Relationship to supplementary IE case Patent applicant address: 1-4-1 Yurakucho, Chiyoda-ku, Tokyo name
Denka Engineering Co., Ltd. Representative Takeaki Miya
Wataru 4, Agent 5, Date of amendment order (self-effectiveness 6, Number of inventions increased by amendment N/A 7, Column for detailed explanation of the invention in the subject specification of supplementary IF. 8, Details of amendment stated in attached sheet) As per the amendment. Japanese Patent Application No. 58-1385 (18") (1) The statement in the eighth line after "Detection" at the end of the second line of Paragraph 3 of the specification is deleted and corrected as follows. [ When the minimum unit of resistance voltage conversion output is 20 kg,
Assuming that the cutting amount to be set is 400 kg/ff1in, the time required to detect the minimum unit weight change is 20 kg + 400 kg/m1n = 3 sec, whereas if the cutting amount is set to 4 Q lag/win Assuming that, the detection time is 20 kg/40 kg/m1n=30 sec. In other words, in the case of the above example, the cutting amount is 40 kg/m1n
1 when compared to 400 kg/flIin.
This requires 0 times as much detection time. For this reason, cutting-1-
When measured at equal time intervals, the number of detection points is small at 40 kg/sin, so when controlling the cutting amount, the accuracy will be reduced to 1/10. ” (2) Clause 6, line 3, “can do something”
Delete ゛ and insert the following sentence. ``The detection time for heavy ψ changes can be reduced to 1/10.''
Claims (3)
気体圧力が一定に維持され、前記輸送管に供給されるプ
スター流量がタンクの重量減Ｍ微分値調節計出力に基い
て制御されてん粒体を所定の切出量で排出する加圧タン
クを有する粉粒体排出装置において、前記タンク重量を
検出するロードセルが測定し〉ジを異ならしめた複数の
変換器に接続され、所望する切出排出量に応じて前記変
換器出力を切換えて前記重量減量微分値調節計に供給す
ることを特徴とする高精度粉粒体排出装置。(1) A cutting nozzle connected to the transport pipe is provided, the tank pressurized gas pressure is maintained constant, and the flow rate of the puster supplied to the transport pipe is controlled based on the output of the weight reduction M differential value controller output of the tank. In a powder discharge device having a pressurized tank for discharging granules in a predetermined amount, a load cell for detecting the weight of the tank is connected to a plurality of transducers having different heights, and A high-precision powder discharge device characterized in that the output of the converter is switched according to the amount of cut-out discharge and the output is supplied to the weight loss differential value controller.
切出ノズルを所望する切出排出量に応じて屯独又は組合
せて使用する特許請求の範囲第１項記載の装置。(2) The apparatus according to claim 1, wherein there are a plurality of booster tubes and cutting nozzles, and each of the cutting nozzles is used individually or in combination depending on the desired cutting amount.
各ノズル管径を異ならしめ前記各切出ノズルを所望する
切出排出量に応して単独又は組合せて使用する特許請求
の範囲第１項記載の装置。(3) Claim 1, in which there are a plurality of booster pipes and νJ output nozzles, and each nozzle pipe diameter is made different, and each of the cutting nozzles is used alone or in combination depending on the desired cutting output amount. Apparatus described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13950883A JPS6031438A (en) | 1983-08-01 | 1983-08-01 | High accurate exhausting device for pulverized or granular objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13950883A JPS6031438A (en) | 1983-08-01 | 1983-08-01 | High accurate exhausting device for pulverized or granular objects |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6031438A true JPS6031438A (en) | 1985-02-18 |
| JPH0323454B2 JPH0323454B2 (en) | 1991-03-29 |
Family
ID=15246924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13950883A Granted JPS6031438A (en) | 1983-08-01 | 1983-08-01 | High accurate exhausting device for pulverized or granular objects |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6031438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265983A (en) * | 1992-06-02 | 1993-11-30 | The Babcock & Wilcox Company | Cascading pressure continuous blow bottle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5397997B2 (en) * | 2009-07-03 | 2014-01-22 | 新日鉄住金エンジニアリング株式会社 | How to distribute and supply pulverized coal |
| JP5397996B2 (en) * | 2009-07-03 | 2014-01-22 | 新日鉄住金エンジニアリング株式会社 | Pulverized coal distribution and supply equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5322768A (en) * | 1976-08-16 | 1978-03-02 | Kubota Ltd | Scaling circuit |
| JPS5874426A (en) * | 1981-10-26 | 1983-05-04 | Kawasaki Steel Corp | Regulating method of feed quantity in distributive transportation |
-
1983
- 1983-08-01 JP JP13950883A patent/JPS6031438A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5322768A (en) * | 1976-08-16 | 1978-03-02 | Kubota Ltd | Scaling circuit |
| JPS5874426A (en) * | 1981-10-26 | 1983-05-04 | Kawasaki Steel Corp | Regulating method of feed quantity in distributive transportation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265983A (en) * | 1992-06-02 | 1993-11-30 | The Babcock & Wilcox Company | Cascading pressure continuous blow bottle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0323454B2 (en) | 1991-03-29 |
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