JPH0151932B2 - - Google Patents
Info
- Publication number
- JPH0151932B2 JPH0151932B2 JP57051051A JP5105182A JPH0151932B2 JP H0151932 B2 JPH0151932 B2 JP H0151932B2 JP 57051051 A JP57051051 A JP 57051051A JP 5105182 A JP5105182 A JP 5105182A JP H0151932 B2 JPH0151932 B2 JP H0151932B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- hopper
- pipe
- weighing
- service
- 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 94
- 238000005303 weighing Methods 0.000 claims description 67
- 238000010926 purge Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 101150093826 par1 gene Proteins 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は粉体計量装置に関し、更に詳細には微
粉炭、セメント、水処理剤など種々の粉体を定量
づつ連続して所要個所へ気送する粉体計量装置に
関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a powder measuring device, and more specifically, to a device for measuring powder, and more specifically, a device for measuring powder such as pulverized coal, cement, water treatment agents, etc. The present invention relates to a powder measuring device for conveying powder.
（従来の技術）
従来、この種の粉体計量装置としては、計量ホ
ツパー内の粉体を定量づつ気送混合器へ導入し、
ここで加圧気体と混合して所要個所へ送気するも
のが知られている。このような従来の粉体計量装
置は、計量ホツパーから気送混合器への粉体の送
り出し量を正確にするため、計量ホツパー全体の
重量を秤量装置で常に若しくは断続的に計測し、
時間当りの重量減少分に基づいて粉体の送り出し
量を制御するように構成されていた。この粉体計
量装置における計量ホツパーは粉体の送出のため
圧力気体が導入されて加圧されている。(Prior art) Conventionally, this type of powder weighing device introduces powder in a weighing hopper into a pneumatic mixer in fixed amounts,
There is a known method that mixes pressurized gas and sends the mixture to the required location. Such conventional powder weighing devices constantly or intermittently measure the weight of the entire weighing hopper with a weighing device in order to accurately send the amount of powder from the weighing hopper to the pneumatic mixer.
It was configured to control the amount of powder delivered based on the amount of weight reduction per hour. The measuring hopper in this powder measuring device is pressurized by introducing pressurized gas in order to send out the powder.
（発明が解決しようとする課題）
しかしながら、このような従来の粉体計量装置
では、粉体の気送中に計量ホツパーへ粉体を補給
することが困難であるという問題があつた。すな
わち、計量ホツパーへ粉体を補給する際には計量
ホツパー内の圧力の低下を避けなければならず、
そのために補給用のホツパーを設けてこれを計量
ホツパーと同圧にして粉体を補給しようとすると
補給後のバルブの閉鎖によつて計量ホツパーに対
する秤量誤差が出て正確な粉体送り出し制御がで
きないという問題があつた。(Problems to be Solved by the Invention) However, in such a conventional powder measuring device, there is a problem in that it is difficult to replenish powder to a weighing hopper while the powder is being pneumatically fed. In other words, when replenishing powder to the weighing hopper, it is necessary to avoid a drop in the pressure inside the weighing hopper.
For this reason, if a replenishment hopper is installed and the pressure is the same as that of the weighing hopper to replenish the powder, the closing of the valve after replenishment will cause a weighing error with respect to the weighing hopper, making it impossible to accurately control powder delivery. There was a problem.
本発明の目的は、かかる従来の問題点を解決す
るためになされたもので、計量ホツパーへ粉体を
補給する際計量ホツパー内の圧力降下を招くこと
なく且つ計量ホツパーに対する秤量誤差の生じな
い粉体計量装置を提供することにある。 The purpose of the present invention was to solve such conventional problems, and the purpose of the present invention is to provide powder that does not cause a pressure drop in the weighing hopper when replenishing the powder to the weighing hopper, and that does not cause an error in weighing the powder to the weighing hopper. An object of the present invention is to provide a body measurement device.
（課題を解決するための手段）
本発明の粉体計量装置は、全体重量を計測可能
に各管と接続され且つ支持された計量ホツパー
と、該計量ホツパーから所定個所に粉体を気送す
る粉体供給装置と、前記計量ホツパーの上方に配
置されたサービスホツパーと、該サービスホツパ
ーおよび前記計量ホツパーにそれぞれ加圧気体を
導入する手段と、前記サービスホツパーと前記計
量ホツパーとを接続する粉体補給管に設けられフ
レキシブルパイプおよび該パイプの両側に設けら
れた開閉弁を備える継手と、前記サービスホツパ
ーと前記計量ホツパーとを連通する均圧管と、前
記開閉弁間の前記粉体補給管に接続され該両開閉
弁の間に残留する加圧気体を大気に放出するパー
ジパイプとを含んで構成されている。(Means for Solving the Problems) The powder weighing device of the present invention includes a weighing hopper that is connected to and supported by each pipe so that the overall weight can be measured, and that pneumatically transports powder from the weighing hopper to a predetermined location. A powder supply device, a service hopper disposed above the weighing hopper, means for introducing pressurized gas into the service hopper and the weighing hopper, and connecting the service hopper and the weighing hopper. a flexible pipe provided on a powder replenishment pipe and a joint comprising an on-off valve provided on both sides of the pipe; a pressure equalization pipe communicating the service hopper and the weighing hopper; and the powder between the on-off valves. The purge pipe is connected to the supply pipe and discharges the pressurized gas remaining between the two on-off valves to the atmosphere.
（作用）
本発明の粉体計量装置によると、計量ホツパー
から粉体供給装置によつて粉体を気送中に、サー
ビスホツパー内に加圧気体を導入して該サービス
ホツパーと計量ホツパーとの内部圧力をほぼ均等
にし、その後、サービスホツパーと計量ホツパー
とを接続する粉体補給管に設けられた継手の開閉
弁をあけてサービスホツパー内の粉体を計量ホツ
パーに補給する。計量ホツパー内の空気は該計量
ホツパーに補給される粉体と置換すべく均圧管を
通つてサービスホツパーへ導入され、両ホツパー
内の圧力は均等に保たれる。そして、計量ホツパ
ーから粉体計量装置によつて粉体が気送される
際、刻々と変化（減少）する該計量ホツパーの重
量を秤量装置で誤差なく計測して供給量を制御す
るため、粉体補給管を開閉弁間でパージパイプに
より大気に開放し、開閉弁間に残留する加圧気体
を大気に放出する。(Function) According to the powder measuring device of the present invention, pressurized gas is introduced into the service hopper while the powder is being pneumatically fed from the weighing hopper by the powder feeding device. After that, the on-off valve of the joint provided on the powder supply pipe connecting the service hopper and the weighing hopper is opened to supply the powder in the service hopper to the weighing hopper. The air in the metering hopper is introduced into the service hopper through a pressure equalization pipe to replace the powder supplied to the metering hopper, and the pressure in both hoppers is maintained equal. When the powder is pneumatically conveyed from the weighing hopper by the powder measuring device, the weight of the weighing hopper, which changes (decreases) every moment, is measured by the weighing device without error to control the powder supply amount. The body supply pipe is opened to the atmosphere by a purge pipe between the on-off valves, and the pressurized gas remaining between the on-off valves is released to the atmosphere.
（実施例）
以下、本発明の粉体計量装置を添付図面に示さ
れた実施例について更に詳細に説明する。(Example) Hereinafter, the powder measuring device of the present invention will be described in more detail with reference to the embodiment shown in the accompanying drawings.
図には本発明の一実施例に係る粉体計量装置が
示されている。当該図において、１はサービスホ
ツパーであり、このサービスホツパー１の上端部
に形成された粉体供給口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
で貯蔵ホツパー７と接続されている。この貯蔵ホ
ツパー７は本粉体計量装置の枠体（図示せず）に
固定されている。 The figure shows a powder measuring device according to an embodiment of the present invention. In the figure, 1 is a service hopper, and a powder supply port 2 formed at the upper end of this service hopper 1 is connected to a joint 6 with on-off valves 4 and 5 provided at the top and bottom of a flexible pipe 3, respectively.
and is connected to the storage hopper 7. This storage hopper 7 is fixed to a frame (not shown) of the powder metering device.
サービスホツパー１の下端部に形成された粉体
排出口８は、サービスホツパー１の下方に配置さ
れた計量ホツパー９の上端部に形成された粉体導
入口１０に継手１１を備えた粉体補給管により接
続されている。この継手１１は２つの開閉弁１
３，１４とその間に設けられたフレキシブルパイ
プ１２とから構成されている。 A powder outlet 8 formed at the lower end of the service hopper 1 is connected to a powder inlet 10 formed at the upper end of the weighing hopper 9 disposed below the service hopper 1 with a fitting 11. Connected by body supply tubes. This joint 11 is used for two on-off valves 1
3 and 14 and a flexible pipe 12 provided between them.
計量ホツパー９の下部には粉体気送用のロータ
リー式粉体供給装置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
形成されている。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
によつて粉体供給装置１５の下方に設置したエゼ
クター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、サービスホツパー１および
計量ホツパー９は、本装置の枠体に設けられたロ
ードセルのような秤量装置２１および２２によつ
てそれぞれの全体重量を計測可能に支持されてい
る。 A rotary powder supply device 15 for pneumatically feeding powder is integrally connected to the lower part of the weighing hopper 9, and a powder delivery port 16 is formed at the lower end of the powder supply device 15. This powder delivery port 16 has a powder delivery pipe 18 with a flexible pipe 17 in place.
is connected to an ejector-type pneumatic mixer 19 installed below the powder supply device 15, and a powder pneumatic pipe 20 is connected to the discharge side of the mixer 19. Further, the service hopper 1 and the weighing hopper 9 are supported by weighing devices 21 and 22, such as load cells, provided in the frame of the apparatus so that their respective overall weights can be measured.
サービスホツパー１、計量ホツパー９および粉
体供給装置１５における加圧気体入口２３，２４
および２５はそれぞれ開閉弁２６，２７，２８を
有する気送パイプ２９，３０，３１の先端開口で
形成され、これらの気送パイプ２９，３０，３１
には開閉弁２６，２７，２８と各ホツパー１，９
および粉体供給装置１５との間にフレキシブルパ
イプ３２，３３，３４が設けられ、且つ気送パイ
プ２９，３０，３１は混合器１９への気送パイプ
３５と共に同一のブロワのような圧力気体源（図
示せず）と連通されている。また、計量ホツパー
９の上部に形成された加圧気体出口３６にはフレ
キシブルパイプ４３および開閉弁３７を有する均
圧管３９が連通され、この均圧管３９は更に均圧
管４０を介してサービスホツパー１の上端部でそ
の内部に連通している。２つの均圧管３９，４０
の接続部には圧抜パイプが接続され、その先端は
開閉弁３８を介して大気に開放されている。更
に、継手１１の開閉弁１３，１４間には開閉弁４
２を備えるパージパイプ４１の一端が連通され、
このパイプ４１の他端が大気に開口されている。 Pressurized gas inlets 23, 24 in the service hopper 1, metering hopper 9 and powder supply device 15
and 25 are formed by the tip openings of pneumatic pipes 29, 30, 31 having on-off valves 26, 27, 28, respectively, and these pneumatic pipes 29, 30, 31
There are on-off valves 26, 27, 28 and each hopper 1, 9.
Flexible pipes 32, 33, 34 are provided between the pump and the powder supply device 15, and the pneumatic pipes 29, 30, 31 and the pneumatic pipe 35 to the mixer 19 are connected to the same pressure gas source such as a blower. (not shown). Further, a pressure equalizing pipe 39 having a flexible pipe 43 and an on-off valve 37 is communicated with the pressurized gas outlet 36 formed at the upper part of the weighing hopper 9, and this pressure equalizing pipe 39 is further connected to the service hopper 1 through a pressure equalizing pipe 40. It communicates with the interior at its upper end. Two pressure equalizing pipes 39, 40
A depressurizing pipe is connected to the connecting portion of the depressurizing pipe, and its tip is opened to the atmosphere via an on-off valve 38. Further, an on-off valve 4 is provided between the on-off valves 13 and 14 of the joint 11.
One end of a purge pipe 41 comprising 2 is connected to the
The other end of this pipe 41 is opened to the atmosphere.
次に、前述のように構成された実施例の粉体計
量装置における動作について説明する。 Next, the operation of the powder measuring device of the embodiment configured as described above will be explained.
計量ホツパー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
うな気体が気送パイプ３０，３１，３５から計量
ホツパー９，粉体供給装置１５および気送用混合
器１９に供給される。これによつて、計量ホツパ
ー９内の粉体は重力と加圧気体との作用で粉体供
給装置１５のロータの回転により、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１９に送られ、これにも加圧気体が送られてい
るため、この粉体と混合して粉体気送パイプ２０
で所要の機器、装置へ供給される。この場合、均
圧管３９の開閉弁３７、両ホツパー１，９間の継
手１１の開閉弁１３，１４、サービスホツパー１
の気送パイプ２９の開閉弁２６は閉鎖され、計量
ホツパー９、粉体供給装置１５、気送用混合器１
９内の圧力が低下することを防止する。 When the powder supply device 15 is driven with the powder being charged up to the upper limit in the metering hopper 9, gas such as air whose pressure has been adjusted to the required pressure is supplied from the pressure gas source to the pneumatic pipes 30, 31, 35 to the metering hopper 9, powder supply device 15 and pneumatic mixer 19. As a result, the powder in the weighing hopper 9 is cut out in predetermined amounts by the rotation of the rotor of the powder supply device 15 under the action of gravity and pressurized gas, passes through the powder delivery pipe 18, and is pneumatically delivered. Since pressurized gas is also sent to this mixer 19, it is mixed with this powder and sent to the powder pneumatic pipe 20.
is supplied to the required equipment and equipment. In this case, the on-off valve 37 of the pressure equalizing pipe 39, the on-off valves 13 and 14 of the joint 11 between both hoppers 1 and 9, and the service hopper 1
The on-off valve 26 of the pneumatic pipe 29 is closed, and the measuring hopper 9, the powder supply device 15, and the pneumatic mixer 1 are closed.
9 is prevented from decreasing in pressure.
そして、サービスホツパー１内が空になつてい
る場合は、貯蔵ホツパー７からサービスホツパー
１内に粉体を入れる。すなわち、開閉弁３７，１
３，１４，２６は閉じたままで、開閉弁３８、サ
ービスホツパー１と貯蔵ホツパー７との間の継手
６の開閉弁４，５を開き、貯蔵ホツパー７から重
力によつて粉体をサービスホツパー１内に落下さ
せる。なお、この場合に、サービスホツパー１内
に落下する粉体と置換してホツパー１内の気体を
均圧管４０を利用して圧抜パイプ３９の開閉弁３
８を経て大気へ放出する。このサービスホツパー
１への粉体の送入は計量ホツパー９内の粉体が下
限まで達しないうちに完了し、サービスホツパー
１内の粉体が上限に達する。 If the service hopper 1 is empty, powder is poured into the service hopper 1 from the storage hopper 7. That is, the on-off valve 37,1
3, 14, and 26 remain closed, the on-off valve 38 and 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 powder is removed from the storage hopper 7 by gravity. Make it fall within par 1. In this case, the powder falling into the service hopper 1 is replaced with the gas in the hopper 1 by using the pressure equalization pipe 40 and the on-off valve 3 of the pressure relief pipe 39.
8 and then released into the atmosphere. 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.
サービスホツパー１内の粉体が上限に達する
と、これを秤量装置２１や図示しないレベル計な
どで検出して、開閉弁３８，４，５を閉じ、開閉
弁２６を開く。これによつて、気送パイプ２９か
らサービスホツパー１内に加圧気体が導入され
る。なお、この場合に開閉弁３７，１３，１４は
閉じたままである。サービスホツパー１内の圧力
が計量ホツパー９内の圧力と均等になるまで高く
なると、これを圧力計（図示せず）で検出して開
閉弁２６を閉じ、この状態を計量ホツパー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 the weighing device 21 or a level meter (not shown), the on-off valves 38, 4, 5 are closed, and the on-off valve 26 is opened. As a result, pressurized gas is introduced into the service hopper 1 from the pneumatic pipe 29. In this case, the on-off valves 37, 13, and 14 remain closed. When the pressure in the service hopper 1 becomes equal to the pressure in the weighing hopper 9, this is detected by a pressure gauge (not shown) and the on-off valve 26 is closed. Maintain until your body reaches the lower limit.
計量ホツパー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ツパー１への粉体
の送入およびサービスホツパー１と計量ホツパー
９との均圧動作中も続けられる。計量ホツパー９
内の粉体が下限に達すると、開閉弁３７，１３，
１４を開く。これによつてサービスホツパー１か
ら粉体が重力で計量ホツパー９に短時間内に補給
される。この場合に、計量ホツパー９に補給され
る粉体と置換してこのホツパー９内の空気が均圧
管３９，４０を経てサービスホツパー１へ導かれ
るので、両ホツパー１，９の圧力は均等に保たれ
る。サービスホツパー１内の粉体の全部が計量ホ
ツパー９に補給されてこのホツパー９内の粉体が
上限に達すると、これを検出して開閉弁３７，１
３，１４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 during the above-described feeding of the powder to the service hopper 1 and the pressure equalization operation between the service hopper 1 and the metering hopper 9. Weighing hopper 9
When the powder inside reaches the lower limit, 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 the pressure equalization pipes 39 and 40, so the pressure in both hoppers 1 and 9 is equalized. It is maintained. When all of the powder in the service hopper 1 is replenished to the weighing hopper 9 and the powder in this hopper 9 reaches its upper limit, this is detected and the on/off valves 37, 1
3 and 14, and repeat the operations described above.
そして、サービスホツパー１から計量ホツパー
９へ粉体を補給して、これらのホツパー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
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間に残留する加圧
気体をパージパイプ４１から大気に放出する。パ
ージパイプ４１の開閉弁４２は継手１１の開閉弁
１３，１４が次に開く前に閉じ、両ホツパー１，
９の圧力降下を生じさせないようにする。このよ
うに、継手１１の開閉弁１３，１４間における粉
体補給管を大気に開放し、残留する加圧気体を放
出することで、秤量装置２２による計量ホツパー
９の秤量誤差を解消することができる。すなわ
ち、開閉弁１３，１４間に加圧気体が残留する
と、その圧力によつてフレキシブルパイプ１２に
対して下方へ押し付ける力が発生し、そのため計
量ホツパー９の見掛け上の重量が増加する。例え
ば、開閉弁１３，１４間に100mmAgの圧力が残留
したとする。この時フレキシブルパイプ１２の内
径が500φであるとすると約20Kgの力が計量ホツ
パー９全体を下方へ押し返えすように働く。従つ
て、秤量装置２２は約20Kg程度実際より多く指示
することになり、これが秤量誤差となる。 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 joint 11 between these hoppers 1 and 9, this is detected, the on-off valve 42 of the purge pipe 41 that opens between the on-off valves 13 and 14 is opened, and the pressurized gas remaining between the on-off valves 13 and 14 of the joint 11 such as in the flexible pipe 12 is released from the purge pipe 41 to the atmosphere. discharge. The on-off valve 42 of the purge pipe 41 closes before the on-off valves 13, 14 of the joint 11 open next, and both hoppers 1,
9 pressure drop should not occur. In this way, by opening the powder supply pipe between the on-off valves 13 and 14 of the joint 11 to the atmosphere and releasing the remaining pressurized gas, it is possible to eliminate the weighing error of the weighing hopper 9 caused by the weighing device 22. can. That is, when pressurized gas remains between the on-off valves 13 and 14, the pressure generates a downward pressing force against the flexible pipe 12, which increases the apparent weight of the weighing hopper 9. For example, assume that a pressure of 100 mmAg remains between the on-off valves 13 and 14. At this time, assuming that the inner diameter of the flexible pipe 12 is 500φ, a force of approximately 20 kg acts to push the entire weighing hopper 9 downward. Therefore, the weighing device 22 will indicate about 20 kg more than the actual weight, which will result in a weighing error.
秤量装置２２は、計量ホツパー９から粉体供給
装置１５によつて粉体が送気される際に、刻々と
変化（減少）する計量ホツパー９の重量を計測
し、時間当たりの重量減少分に基づいて粉体供給
装置１５の作動を制御する。従つて、上述したよ
うな秤量誤差が解消され、正確な秤量が行なえる
と、粉体の定量輸送における精度が著しく向上す
る。 The weighing device 22 measures the weight of the weighing hopper 9 that changes (decreases) every moment when the powder is fed from the weighing hopper 9 by the powder supply device 15, and calculates the amount of weight reduction per hour. Based on this, the operation of the powder supply device 15 is controlled. Therefore, if the above-mentioned weighing errors can be eliminated and accurate weighing can be performed, the precision in quantitative transportation of powder will be significantly improved.
なお、パージパイプ４１はフイルター又は集塵
機など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冷により電気的手段、或
いはこれと圧縮空気などを用いて自動制御で行な
うことができる。更に、この実施例において、計
量ホツ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りすることも好ましい。 Note that the purge pipe 41 is preferably opened to the atmosphere via a filter or a dust collector.
Further, the above-mentioned operation can be performed automatically by sending a detection signal to a control panel and using electric means by finger cooling from the control panel, or by using this and compressed air. Furthermore, in this embodiment, it is also preferable that the weighing hopper is provided with means for detecting the abnormal lower limit of the powder and stopping the entire apparatus.
（発明の効果）
以上説明したように、本発明の粉体計量装置に
よれば、全体重量を秤量可能に支持された計量ホ
ツパーへの該計量ホツパーと同圧に保たれたサー
ビスホツパーからの粉体の補給が、粉体補給管に
残留する加圧気体を補給後に大気に放出するパー
ジパイプの設置により、両ホツパーの圧力を同一
にした状態で且つ計量ホツパーの秤量装置による
秤量誤差を生ずることなく良好に行なうことがで
き、その結果、粉体の安定した連続供給および移
送を行なうことができる。(Effects of the Invention) As explained above, according to the powder weighing device of the present invention, a service hopper maintained at the same pressure as the weighing hopper is fed to a weighing hopper supported so that the entire weight can be measured. Due to the installation of a purge pipe that releases the pressurized gas remaining in the powder supply pipe to the atmosphere after replenishing the powder, the pressure in both hoppers is kept the same and an error in weighing due to the weighing device of the weighing hopper occurs. As a result, stable and continuous supply and transfer of powder can be performed.
図は本発明の一実施例に係る粉体計量装置を示
す構成説明図である。
１……サービスホツパー、９……計量ホツパ
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、２６，２７，２８……開閉弁、２９，３０，
３１，３５……送気パイプ、３９，４０……均圧
管、４１……パージパイプ。
The figure is a configuration explanatory diagram showing a powder measuring device according to an embodiment of the present invention. 1... Service hopper, 9... Measuring hopper, 11... Fitting, 12... Flexible pipe, 13, 14... On-off valve, 15... Powder supply device, 26, 27, 28... On-off valve, 29, 30,
31, 35... Air supply pipe, 39, 40... Pressure equalization pipe, 41... Purge pipe.
Claims (1)
持された計量ホツパー９と、該計量ホツパー９か
ら所定個所に粉体を気送する粉体供給装置１５
と、前記計量ホツパー９の上方に配置されたサー
ビスホツパー１と、該サービスホツパー１および
前記計量ホツパー９にそれぞれ加圧気体を導入す
る手段２６，２９，２７，３０と、前記サービス
ホツパー１と前記計量ホツパー９とを接続する粉
体補給管に設けられフレキシブルパイプ１２およ
び該パイプ１２の両側に設けられた開閉弁１３，
１４を備える継手１１と、前記サービスホツパー
１と前記計量ホツパー９とを連通する均圧管３
９，４０と、前記開閉弁１３，１４間の前記粉体
補給管に接続され該両開閉弁１３，１４の間に残
留する加圧気体を大気に放出するパージパイプ４
１とを含んでなる粉体計量装置。1 A weighing hopper 9 that is connected to and supported by each pipe so that the overall weight can be measured, and a powder supply device 15 that pneumatically conveys powder from the weighing hopper 9 to a predetermined location.
a service hopper 1 disposed above the weighing hopper 9; means 26, 29, 27, 30 for introducing pressurized gas into the service hopper 1 and the weighing hopper 9, respectively; 1 and the measuring hopper 9, a flexible pipe 12 is provided in the powder supply pipe, and an on-off valve 13 is provided on both sides of the pipe 12.
14, and a pressure equalizing pipe 3 that communicates the service hopper 1 and the weighing hopper 9.
9, 40, and a purge pipe 4 that is connected to the powder supply pipe between the on-off valves 13, 14 and discharges pressurized gas remaining between the on-off valves 13, 14 to the atmosphere.
1. A powder measuring device comprising:
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 JPS58168919A (en) | 1983-10-05 |
| JPH0151932B2 true 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012025627A (en) * | 2010-07-23 | 2012-02-09 | Nippon Electric Glass Co Ltd | Raw material powder mixing device |
Families Citing this family (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 |
| US6722294B2 (en) * | 2002-08-06 | 2004-04-20 | Vitro Global, S.A. | Method and apparatus for feeding a pulverized material |
| WO2009044224A1 (en) * | 2007-10-04 | 2009-04-09 | Vitro Global, S.A. | Method and apparatus for feeding a pulverized material |
| JP5273006B2 (en) * | 2009-10-06 | 2013-08-28 | 三菱化学株式会社 | Method for producing polycarbonate resin |
-
1982
- 1982-03-31 JP JP5105182A patent/JPS58168919A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012025627A (en) * | 2010-07-23 | 2012-02-09 | Nippon Electric Glass Co Ltd | Raw material powder mixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58168919A (en) | 1983-10-05 |
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