JPS58168919A - Weighing apparatus of powdered body - Google Patents
Weighing apparatus of powdered bodyInfo
- Publication number
- JPS58168919A JPS58168919A JP5105182A JP5105182A JPS58168919A JP S58168919 A JPS58168919 A JP S58168919A JP 5105182 A JP5105182 A JP 5105182A JP 5105182 A JP5105182 A JP 5105182A JP S58168919 A JPS58168919 A JP S58168919A
- Authority
- JP
- Japan
- Prior art keywords
- hopper
- powder
- service
- weighing
- pipe
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
- G01G13/022—Material feeding devices
- G01G13/028—Material feeding devices by pneumatic carrying means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、微粉炭、セメント、水処理剤彦どの粉体を
気送するためなどに用いる粉体計量装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder measuring device used for pneumatically conveying powder such as pulverized coal, cement, water treatment agent, etc.
従来、前記のような粉体計量装置は、圧力タンク内圧粉
体を入れ、気体で加圧して気送するものが知られている
が、粉体の供給量の制御は、流動化した粉体が流出する
のにまかせたシ、流出量の大小によシ背圧が変動するの
を検出して圧力気体の圧力や流出量を制御するものであ
った。しかし、このような従来の粉体計量装置では、粉
体供給量の高精度で安定した制御は不可能であった。す
なわち、既に変動してしまった背圧は粉体の流れを脈動
させ、圧縮性のある気体の圧力変動を検出して制御する
ことは、応答性が悪く、また精度も悪いという問題があ
った。Conventionally, it is known that the powder measuring device described above is one in which compressed powder is placed in a pressure tank, pressurized with gas, and then pneumatically delivered. The system controlled the pressure and flow rate of the pressurized gas by detecting fluctuations in back pressure depending on the size of the flow rate. However, with such conventional powder measuring devices, highly accurate and stable control of the amount of powder supplied is not possible. In other words, the back pressure that has already fluctuated causes the flow of powder to pulsate, and detecting and controlling the pressure fluctuations of compressible gas has a problem of poor responsiveness and poor accuracy. .
この発明は、計量ホッパーおよびこれの下部に結合した
粉体供給装置の圧力気体をほぼ均等な圧力に保持しつつ
計量ホッパー内の粉体を前記粉体供給装置によって連通
気送し、とくにサービスホッパーから計量ホッパーへの
粉体の補給をこれらの内部圧力を均等にして行わせるこ
とにより、前述した問題を解決して、精度のよい粉末の
連続定量供給を可能とした粉末計量装置を提供すること
を目的としている。This invention provides continuous flow of powder in the weighing hopper by the powder feeding device while maintaining the pressure gas in the weighing hopper and the powder feeding device connected to the lower part of the weighing hopper at a substantially uniform pressure. To provide a powder measuring device which solves the above-mentioned problem by replenishing powder from a measuring hopper to a measuring hopper by making these internal pressures equal, and enables continuous quantitative supply of powder with high accuracy. It is an object.
以下、どの発明の一実施例につき図面を参照−して説明
する。Hereinafter, one embodiment of each invention will be described with reference to the drawings.
図において、１はサービスホッパーであり、このホッパ
ー１の上端部に設けた粉体供給口２はフレキシブルパイ
プ３の上、下に開閉弁４，５をそれぞれ設けた継手６で
送入手段である貯蔵ホッパー７と接続されている。この
貯蔵ホッパー７は図示しない装置枠に固定されている。In the figure, 1 is a service hopper, and a powder supply port 2 provided at the upper end of this hopper 1 is a feeding means through a joint 6 with on-off valves 4 and 5 provided above and below a flexible pipe 3, respectively. It is connected to a storage hopper 7. This storage hopper 7 is fixed to a device frame (not shown).
前記サービスホッパー１の下端部に設けた粉体排出口８
は、サービスホッパー１の下方に配置された計量ホッパ
ー９の上端部に設けた粉体導入口１０と継手１１を介し
て接続されている。この継手１１はフレキシブルパイプ
１２の上、下に開閉弁１３．１４がそれぞれ設けられた
ものである。前記計量ホッパー９の下部には粉体気送用
のロータリ一式定量粉体供給装置１５が一体に結合され
、この粉体供給装置１５の下端部には粉体送出口１６が
設けられている。この粉体送出口１６はフレキシブルパ
イプ１７を適所にもつ粉体送出パイプ１８によって粉体
供給装置１５の下方に設置したエゼクタ一方式の気送用
混合器１９に接続され、この混合器１９の吐出側には粉
体気送パイプ２０が連通されている。また、サービスホ
ッパー１およヒ計量ホッパー９は図示しない装置枠に固
定されたロードセルのような秤量装置２１および２２に
それぞれ支持されている。Powder discharge port 8 provided at the lower end of the service hopper 1
is connected via a joint 11 to a powder inlet 10 provided at the upper end of a weighing hopper 9 disposed below the service hopper 1. This joint 11 has on-off valves 13 and 14 provided above and below a flexible pipe 12, respectively. A rotary quantitative powder supply device 15 for pneumatic powder feeding is integrally connected to the lower part of the weighing hopper 9, and a powder delivery port 16 is provided at the lower end of the powder supply device 15. This powder delivery port 16 is connected to an ejector-type pneumatic mixer 19 installed below the powder supply device 15 by a powder delivery pipe 18 having a flexible pipe 17 in place, A powder pneumatic pipe 20 is connected to the side. Further, the service hopper 1 and the weighing hopper 9 are respectively supported by weighing devices 21 and 22, such as load cells, which are fixed to a device frame (not shown).
前記サービスホッパー１．計量ホッパー９および粉体供
給装置１５の圧力気体入口２３．２４および２５がそれ
ぞれ開閉弁２６．２７．２８を有する。送気パイプ２９
，３０．３１の先端開口で形成され、これらの送気パイ
プ２９ 、３０ 、３１は開閉弁２６，２７．２８と前
記両ホッパー１゜９、粉体供給装置１５の間にフレキシ
ブルパイプ３２．３３．３４が設けられ、前記送気パイ
プ２９゜３０．３１は前記混合器１９への送気パイプ３
５ 。Said service hopper1. The pressure gas inlets 23.24 and 25 of the metering hopper 9 and the powder supply device 15 each have a shut-off valve 26.27.28. Air supply pipe 29
, 30, 31, and these air supply pipes 29, 30, 31 are connected to flexible pipes 32, 33 between the on-off valves 26, 27, 28, the hoppers 1°9, and the powder supply device 15. .34 is provided, and the air supply pipe 29°30.31 is the air supply pipe 3 to the mixer 19.
5.
と共に図示しない同一のプロワのような圧力気体源と連
通されている。ま＋、ｇｔ盪ホッパー９の上部に設は九
圧力気体出口３６には開閉弁３７ 、３８を有する圧抜
パイプ３９が連通され、このパイプ３９の先端は大気に
開放されている。圧抜パイプ３９の開閉弁３７．３８間
が連通パイプ４ｏでサービスホッパ−１，の上端部に連
通されている。前記両ホッパー１．９間に設けた継手１
１の開閉弁１３．１４間のフレキシブルパイプ１２以外
の部分には開閉弁４２をもつパージパイプ４１の一端が
連通され、このパイプ３８の他端が大気に開口されてい
る。and a source of pressurized gas, such as an identical blower (not shown). Additionally, a pressure relief pipe 39 having on-off valves 37 and 38 is connected to a pressure gas outlet 36 provided at the upper part of the hopper 9, and the tip of this pipe 39 is open to the atmosphere. The opening/closing valves 37 and 38 of the pressure relief pipe 39 are communicated with the upper end of the service hopper 1 through a communication pipe 4o. Joint 1 provided between both hoppers 1.9
One end of a purge pipe 41 having an on-off valve 42 is communicated with a portion other than the flexible pipe 12 between the on-off valves 13 and 14, and the other end of this pipe 38 is opened to the atmosphere.
次に％前述のように構成された粉体計量装置の動作につ
いて説明する。Next, the operation of the powder measuring device constructed as described above will be explained.
計量ホッパー９に上限まで粉体が投入されている状態で
、粉体供給装置１５を駆動させると、圧力気体源から所
要圧力に調整されている空気のような気体が送気パイプ
２９，３０，３５から計量ホッパー９．粉体供給装置１
５（および気送用混合器１９に供給される。これによっ
て、計量ホッパー９内の粉体は重力と圧力気体との作用
で粉体供給装置１５のロータの回転によシ、所定量ずつ
切出されて粉体送出パイプ１８を通り、気送用混合器１
９に送られ、これにも圧力気体が送られているため、こ
の気体と混合して粉体気送パイプ２゜で所要の機器、装
置へ供給される。この場合に、サービスホッパー１内の
圧力が計量ポツパー９内の圧力よシ低い状態では圧抜パ
イプ３９の開閉弁３７、両ホッパー１．９間の継手１１
の開閉弁１３゜１４、サービスホッパー１の送気パイプ
２９の開閉弁２６は閉じておシ、計量ホッパー９．粉体
供給装置１５．気送用混合器１９内の圧力が低下するこ
とを防止する。When the powder supply device 15 is driven while the powder is charged to the upper limit in the metering hopper 9, gas such as air whose pressure has been adjusted to a required level is supplied from the pressure gas source to the air supply pipes 29, 30, 35 to weighing hopper9. Powder supply device 1
5 (and supplied to the pneumatic mixer 19. As a result, the powder in the weighing hopper 9 is cut into predetermined amounts by the rotation of the rotor of the powder supply device 15 due to the action of gravity and pressure gas. The powder is discharged, passes through the powder delivery pipe 18, and enters the pneumatic mixer 1.
9, and since pressurized gas is also sent to this, the powder is mixed with this gas and supplied to the required equipment and devices through the powder pneumatic pipe 2°. In this case, if the pressure inside the service hopper 1 is lower than the pressure inside the metering popper 9, the on-off valve 37 of the pressure relief pipe 39, the joint 11 between the two hoppers 1.
The on-off valves 13 and 14 of the service hopper 1, the on-off valve 26 of the air supply pipe 29 of the service hopper 1, are closed, and the weighing hopper 9. Powder supply device 15. This prevents the pressure inside the pneumatic mixer 19 from decreasing.
そして、サービスホッパー１内は空になっているので、
計量ホッパー９内の粉体が少し減少した時点で貯蔵ホッ
パー７からサービスホッパー１内に粉体を入れる。すな
わち、開閉弁３７，１３゜１４．２６は閉じたままで、
開閉弁３８．サービスホッパ １と貯蔵ホッパー７との
間の継手６の開閉弁４，５を開き、貯蔵ホッパー７から
重力によって粉体をサービスホッパー１内圧落下させる
〇なお、この場合に、サービスホッパー１内に落下する
粉体と置換してこのホッパー１内の気体を連通パイプ４
０．圧抜パイプ３９の開閉弁３８より大気側部分を経て
大気へ放出する。このサービスホッパー１への粉体の送
入は計量ホッパー９内の粉体が下限まで達しないうちに
完了し、サービスホッパー１内の粉体が上限に達する。And since the inside of service hopper 1 is empty,
When the powder in the weighing hopper 9 decreases a little, the powder is put into the service hopper 1 from the storage hopper 7. That is, the on-off valves 37, 13° 14.26 remain closed,
Open/close valve 38. The on-off valves 4 and 5 of the joint 6 between the service hopper 1 and the storage hopper 7 are opened, and the internal pressure of the service hopper 1 causes the powder to fall from the storage hopper 7 by gravity. In this case, the powder falls into the service hopper 1. The gas in the hopper 1 is replaced with the powder to be transferred to the communication pipe 4.
0. It is discharged into the atmosphere from the on-off valve 38 of the pressure relief pipe 39 through the atmosphere side portion. The feeding of the powder to the service hopper 1 is completed before the powder in the weighing hopper 9 reaches the lower limit, and the powder in the service hopper 1 reaches the upper limit.
サービスホッパー１内の粉体が上限に達すると、これを
図示しないレベル計などで検出して、開閉弁３８，４．
５′ｆｔ閉じ、開閉弁２６を開く。これによって、送気
パイプ２９からサービスホッパー１内に圧力気体が導入
される。なお、この場合に開閉弁３７．１３．１４は閉
じたままである。サービスホッパー１内の圧力が計量ホ
ッパー９内の圧力と均等になるまで高くなると、これを
サービス＊ ツバ−１ｓ 計１ホッパー９の秤量装置２
１゜２２で検出して開閉弁２６を閉じ、この状態を計量
ホッパー９内の粉体が下限に達するまで維持する。When the powder in the service hopper 1 reaches its upper limit, this is detected by a level meter (not shown), and the on-off valves 38, 4.
5'ft and open the on-off valve 26. As a result, pressurized gas is introduced into the service hopper 1 from the air supply pipe 29. Note that in this case, the on-off valves 37.13.14 remain closed. When the pressure in the service hopper 1 increases until it becomes equal to the pressure in the weighing hopper 9, it is serviced.
1°22, the on-off valve 26 is closed, and this state is maintained until the powder in the weighing hopper 9 reaches the lower limit.
計量ホッパー９から気送用混合器１９への粉体の供給は
、前述したサービスホッパー１への粉体９との均圧動作
中も続けられる。計量ホッパー９内の粉体が下限に達す
ると、これを適宜の手段で検出して開閉弁３７，１３．
１４を開く。これによってサービスホッパー１から粉体
が重力で計量ホッパー９に短時間内に補給される。この
場合に、計量ホッパー９に補給される粉体と置換してこ
のホッパー９内の空気が圧抜パイプ３９の一部と連通パ
イプ４０を経てサービスホッパー１へ導かれるので、両
ホッパー１．９内の圧力は均等に僚友れる。サービスホ
ッパー１内の粉体の全部が計量ホッパー９に補給されて
このホッパー９内の粉体が上限に達すると、これを検出
して開閉弁３７゜１３．１４を閉じ、以下前述した動作
を繰返す。The supply of powder from the metering hopper 9 to the pneumatic mixer 19 continues even during the pressure equalization operation with the powder 9 to the service hopper 1 described above. When the powder in the weighing hopper 9 reaches the lower limit, this is detected by appropriate means and the on-off valves 37, 13 .
Open 14. As a result, powder is replenished from the service hopper 1 to the weighing hopper 9 by gravity within a short time. In this case, the air in this hopper 9 is replaced with the powder supplied to the weighing hopper 9 and is led to the service hopper 1 via a part of the pressure relief pipe 39 and the communication pipe 40, so that both hoppers 1.9 The pressure within is evenly distributed. When all of the powder in the service hopper 1 is replenished into the weighing hopper 9 and the powder in this hopper 9 reaches its upper limit, this is detected and the on-off valve 37°13. Repeat.
そして、サービスホッパー１から計量ホッパー９へ粉体
を補給して、これらのホッパー１，９間の継手１１の粉
体切出し用の開閉弁１３および排出用の開閉弁１４を閉
じた後、これを検出して開 １閉弁１３，１４間
に開口するパージパイプ４１の開閉弁４２を開き、フレ
キシブルパイプ１２内など継手１１の開閉弁１３．１４
間に残留する圧力気体をパージパイプ４１から大気に放
出する。また、パージパイプ４１の開閉弁４２は継手１
１の開閉弁１３．１４が次に開く前に閉じ、両ホッパー
１，９の圧力降下がないようにする。このようにするこ
とにより、パージパイプ４１および開閉弁４２がないと
、継手１１内の開閉弁１３．１４間に圧力気体が残留し
、計量ホッパー９の見掛は上の重量が増加して秤量誤差
が大きくなることを解消し、正確な秤量を行えるように
している。前記秤量誤差は、フレキシブルパイプ１２内
の圧力残留が１００■Ａｇ１このパイプ１２の内径が５
００φの時に約２０輪になり、計量ホッパー９の重量が
秤量装置２２に２０神程度多く指示されることになるが
、この実施例のようにすることにより誤差がなくなる。Then, after replenishing the powder from the service hopper 1 to the weighing hopper 9 and closing the on-off valve 13 for cutting out the powder and the on-off valve 14 for discharging the powder in the joint 11 between these hoppers 1 and 9, Detect and open 1 Open the on-off valve 42 of the purge pipe 41 that opens between the closed valves 13 and 14, and open the on-off valves 13 and 14 of the joint 11 in the flexible pipe 12, etc.
The remaining pressure gas is discharged from the purge pipe 41 to the atmosphere. Also, the on-off valve 42 of the purge pipe 41 is connected to the joint 1.
The on-off valve 13,14 of 1 closes before the next opening, so that there is no pressure drop in both hoppers 1,9. By doing this, if the purge pipe 41 and the on-off valve 42 are not present, pressure gas will remain between the on-off valves 13 and 14 in the joint 11, and the apparent weight of the weighing hopper 9 will increase, causing the weighing This eliminates large errors and enables accurate weighing. The above-mentioned weighing error is based on the fact that the residual pressure inside the flexible pipe 12 is 100 ■Ag1 and the inner diameter of this pipe 12 is 5
When the diameter is 00φ, there will be approximately 20 wheels, and the weight of the weighing hopper 9 will be indicated to the weighing device 22 by about 20 wheels, but this embodiment eliminates the error.
なお、パージパイプ４１はフィルター、集塵機を介して
大気に開放することが好ましい・
また、前述した動作は、制御盤に検出信号を送り、この
制御盤からの指令により電気的手段、あるいはこれと圧
縮空気などを用いて自動制御で行う。さらに、この実施
例において、計量ホッパーに粉体の異常下限を検出して
全装置を停止させる手段を設けたシ、計量ホッパーの秤
量装置で、計量ホッパー内の圧力に応じ、粉体供給装置
の電動機の回転数を制御し、粉体供給量を適切にするこ
とが好ましい。In addition, it is preferable that the purge pipe 41 be opened to the atmosphere via a filter or a dust collector. Also, the above-mentioned operation sends a detection signal to the control panel, and in response to a command from the control panel, the purge pipe 41 is operated by electrical means or by using compressor. This is done automatically using air, etc. Furthermore, in this embodiment, the weighing hopper is equipped with a means for detecting the abnormal lower limit of the powder and stopping the entire device. It is preferable to control the rotational speed of the electric motor to appropriately supply the powder.
以上説明したように、この発明の粉体計量装置は、サー
ビスホッパーとこのホッパー上に設けた粉体送入手段を
フレキシブルパイプおよび開閉弁を介して接続させ、前
記サービスホッパーとこのホッパーの下に設けた計量ホ
ッパーとをフレキシブルパイプの上、下に開閉弁をそれ
ぞれ設けた継手で接続させ、前記計量ホッパーの下部に
粉体気送用の定量粉体供給装置を設け、前記サービスホ
ッパーおよび計量ホッパーに設けた圧力気体の出。As explained above, the powder measuring device of the present invention connects the service hopper and the powder feeding means provided on this hopper via a flexible pipe and an on-off valve, and connects the service hopper and the powder feeding means provided on this hopper to The service hopper and the weighing hopper are connected to the provided weighing hopper with joints each having an on-off valve at the top and bottom of the flexible pipe. Pressure gas outlet provided at
入口を、７レキシプルパイプおよび開閉弁を介して、圧
力気体と大気とに連通させ、さらに両ホッパーを連通さ
せると共にサービスホッパーおよび計量ホッパーをそれ
ぞれの秤量装置に支持させたものである。したがって、
この発明によれば、サービスホッパーから計量ホッパー
への粉体補給中を含めて計量ホッパー、粉体供給装置内
の圧力気体を等しい圧力に維持することができ、背圧の
変化や脈動が生ずることがないので、高精度で安定した
粉体の前記供給装置からの連続供給および気送ができる
という効果が得られる。The inlet is connected to pressurized gas and the atmosphere through a 7-lexiple pipe and an on-off valve, and both hoppers are communicated with each other, and the service hopper and weighing hopper are supported by their respective weighing devices. therefore,
According to this invention, it is possible to maintain the pressure gas in the weighing hopper and the powder supply device at the same pressure, including during powder replenishment from the service hopper to the weighing hopper, and it is possible to prevent back pressure changes and pulsations from occurring. Since there is no such problem, it is possible to achieve the effect that highly accurate and stable powder can be continuously supplied and pneumatically fed from the supply device.
図はこの発明の一笑施例を示す構成説明、図である。
１・・・サービスホッパー、３・・・フレキシブルパイ
プ、４．５・・・開閉弁、６・・・継手、７・・・貯蔵
ホッパー、（粉体送入手段）、９・・・計量ホッパー、
１１・・・継手、１２・・・フレキシブルパイプ、１３
．１４・・・開閉弁、１５・・・粉体供給装置％２１．
２２・・・秤量装置、２３，２４．２５・・・圧力気体
入口％２６゜２７．２８・・・開閉弁、２９，３０．３
１・・・送気パイプ、３２，３３．３４・・・フレキシ
ブルパイプ、３６・・・圧力気体出口、３７．３８・・
・開閉弁、３９・・・圧抜パイプ、４０・・・連通パイ
プ、４１・・・パージバイブ、４２・・・開閉弁。The figure is a diagram illustrating the configuration of a simple embodiment of the present invention. 1... Service hopper, 3... Flexible pipe, 4.5... Open/close valve, 6... Fitting, 7... Storage hopper, (powder feeding means), 9... Measuring hopper ,
11... Fitting, 12... Flexible pipe, 13
．． 14...Opening/closing valve, 15...Powder supply device%21.
22... Weighing device, 23, 24.25... Pressure gas inlet % 26° 27.28... Opening/closing valve, 29, 30.3
1... Air supply pipe, 32, 33. 34... Flexible pipe, 36... Pressure gas outlet, 37.38...
- Opening/closing valve, 39... Pressure relief pipe, 40... Communication pipe, 41... Purge vibe, 42... Opening/closing valve.
Claims (2)
体送入手段をフレキシブルパイプおよび開閉弁を介して
接続させ、前記サービスホッパーとこノホッパーの下に
設けた計量ホッパーとをフレキシブルパイプの上、下に
開閉弁をそれぞれ設けた継手で接続させ、前記サービス
ホッパーおよび計量ホッパーに設けた圧力気体の出、入
口をフレキシブルパイプおよび開閉弁を介して圧力気体
源と大気とに連通させ、さらに両ホッパーを連通させた
ことを特徴とする粉体計量装置。(1) A service hopper and a powder feeding means provided above the hopper are connected via a flexible pipe and an on-off valve, and the service hopper and the weighing hopper provided below the hopper are connected above and below the flexible pipe. The service hopper and the weighing hopper are connected by joints each having an on-off valve, and the pressure gas outlet and inlet provided in the service hopper and the weighing hopper are communicated with the pressure gas source and the atmosphere via a flexible pipe and the on-off valve. A powder measuring device characterized by communicating with each other.
続し、このパージパイプの他端を開閉弁を介して大気に
開放したことを特徴とする特許請求の範囲第１項記載の
粉体計量装置。(2) The powder according to claim 1, characterized in that one end of the purge pipe is connected to the part between the on-off valves of the joint, and the other end of the purge pipe is opened to the atmosphere via the on-off valve. Body weighing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5105182A JPS58168919A (en) | 1982-03-31 | 1982-03-31 | Weighing apparatus of powdered body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5105182A JPS58168919A (en) | 1982-03-31 | 1982-03-31 | Weighing apparatus of powdered body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58168919A true JPS58168919A (en) | 1983-10-05 |
| JPH0151932B2 JPH0151932B2 (en) | 1989-11-07 |
Family
ID=12875996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5105182A Granted JPS58168919A (en) | 1982-03-31 | 1982-03-31 | Weighing apparatus of powdered body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58168919A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2609548A1 (en) * | 1987-01-09 | 1988-07-15 | Perquis Vincent | Device for metering, by weighing, products contained in double-opening containers |
| FR2631443A1 (en) * | 1988-05-16 | 1989-11-17 | Hasler Freres Int Sa | Silo-stored powder dosage - using intermediary conduit-connected enclosures to equalise pressure between silo level and extraction point |
| WO2004017031A1 (en) * | 2002-08-06 | 2004-02-26 | Vitro Global, S.A. | Method and apparatus for feeding a pulverized material |
| JP2010540397A (en) * | 2007-10-04 | 2010-12-24 | ヴィトロ グローバル エス．エイ． | Powder material supply method and apparatus |
| JP2011079936A (en) * | 2009-10-06 | 2011-04-21 | Mitsubishi Chemicals Corp | Method for producing polycarbonate resin |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5773112B2 (en) * | 2010-07-23 | 2015-09-02 | 日本電気硝子株式会社 | Raw material powder blender |
-
1982
- 1982-03-31 JP JP5105182A patent/JPS58168919A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2609548A1 (en) * | 1987-01-09 | 1988-07-15 | Perquis Vincent | Device for metering, by weighing, products contained in double-opening containers |
| FR2631443A1 (en) * | 1988-05-16 | 1989-11-17 | Hasler Freres Int Sa | Silo-stored powder dosage - using intermediary conduit-connected enclosures to equalise pressure between silo level and extraction point |
| WO2004017031A1 (en) * | 2002-08-06 | 2004-02-26 | Vitro Global, S.A. | Method and apparatus for feeding a pulverized material |
| JP2006501121A (en) * | 2002-08-06 | 2006-01-12 | ヴィトロ グローバル エス．エイ． | Powder material supply method and apparatus |
| CN100354613C (en) * | 2002-08-06 | 2007-12-12 | 维特罗环球有限公司 | Method and apparatus for feeding a pulverized material |
| JP2010540397A (en) * | 2007-10-04 | 2010-12-24 | ヴィトロ グローバル エス．エイ． | Powder material supply method and apparatus |
| JP2011079936A (en) * | 2009-10-06 | 2011-04-21 | Mitsubishi Chemicals Corp | Method for producing polycarbonate resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0151932B2 (en) | 1989-11-07 |
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