JPS62202210A - Preheating control system for granular material - Google Patents
Preheating control system for granular materialInfo
- Publication number
- JPS62202210A JPS62202210A JP4342286A JP4342286A JPS62202210A JP S62202210 A JPS62202210 A JP S62202210A JP 4342286 A JP4342286 A JP 4342286A JP 4342286 A JP4342286 A JP 4342286A JP S62202210 A JPS62202210 A JP S62202210A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- controller
- hopper
- blower
- extruder
- 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
- 239000008187 granular material Substances 0.000 title abstract description 19
- 238000000034 method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 description 6
- 229920000426 Microplastic Polymers 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
- Control Of Temperature (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野]
本発明は粒状物体の予熱制御方式、詳しくは超高圧電線
ケーブル等の絶縁被覆体として用いられるプラスチック
スペレット笠の粒状物体を予め加熱しておく予熱制御方
式に関するものである。[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a preheating control method for granular objects, specifically, a method for preheating granular objects of plastic pellet caps used as insulation coverings for ultra-high voltage electric cables, etc. This relates to a preheating control method.
[従来の技術]
電線導体に絶縁被覆を施すには、被覆用絶縁体の押出機
に電線導体を引き通し、同押出機のホッパ内に被覆用絶
縁体であるプラスチックスベレット等の粒状物体を格納
し、これを予熱して押出機に供給して、電線導体を被覆
するようにしている。[Prior art] In order to apply an insulation coating to a wire conductor, the wire conductor is passed through an extruder for the insulation coating, and a granular object such as plastic svelette, which is the insulation coating, is placed in the hopper of the extruder. It is stored, preheated, and fed to an extruder to coat the wire conductor.
そして、この場合、粒状物体を一定温度に予熱しつつ押
出機に供給するのであるが、粒状物体の押出機に供給さ
れる状態の温度は、従来、上記ホッパ内に熱風を送る熱
風発生装置の出口の温度を測り、これによって制御して
いる。In this case, the granular material is preheated to a constant temperature before being supplied to the extruder. Conventionally, the temperature at which the granular material is supplied to the extruder is controlled by a hot air generator that sends hot air into the hopper. The temperature at the outlet is measured and controlled accordingly.
しかし、粒状物体の予熱温度は、上記押出機の速度の変
化(停止状態も含む)、即ち押出機への粒状物体の供給
皿の変化により大きく変る。However, the preheating temperature of the granular material varies greatly due to changes in the speed of the extruder (including when it is stopped), ie, changes in the feeding tray of the granular material to the extruder.
従って押出mの変化に伴い、ホッパへの熱量供給を調整
する必要があるが、これは従来、人為的に手動操作によ
り行なわれていた。Therefore, it is necessary to adjust the amount of heat supplied to the hopper as the extrusion m changes, but this has conventionally been done manually.
[発明が解決しようとする問題点]
しかし、従来のように熱量供給の適正な調節を人為的な
手段に頼るということは、その人の豊富な経験と感によ
る長年の熟練を必要とし、誰にでもできるというもので
はなく、特定な人でなくてはできないという欠点があっ
た。[Problems to be solved by the invention] However, relying on artificial means to appropriately adjust heat supply as in the past requires many years of skill based on a person's extensive experience and sensitivity. The drawback was that it was not something that anyone could do, and only a specific person could do it.
本発明の目的は、上記欠点を解消するために、ホッパ内
の粒状物体がホッパ内を通過する速度あるいは粒状物体
の量には無関係に、粒状物体の押出機に供給される状態
の温度を自動的に一定に保つことができる予熱制御方式
を提供するにある。In order to overcome the above-mentioned drawbacks, it is an object of the present invention to automatically control the temperature of the granular material fed to the extruder, regardless of the speed at which the granular material passes through the hopper or the amount of the granular material. The purpose of the present invention is to provide a preheating control method that can maintain a constant temperature.
[問題点を解決するための手段および作用]本発明では
、ホッパの排熱温度は粒状物体の押出供給量が多ければ
下がり、少なければ」二がるという傾向に着「1し、空
気加熱器とブロアとで構成され、ホッパ内の粒状物体を
予熱する熱風発生装置における出口温度を検出し、この
検出出力によって上記加熱器の温度を制御すると共に、
ホッパ内の粒状物体の押出機への供給量により変化する
ホッパの排熱温度を検出して、この検出出力により上記
ブロアの回転数を制御するようにしたものである。[Means and effects for solving the problem] In the present invention, the exhaust heat temperature of the hopper decreases as the extrusion supply amount of granular material increases, and decreases as the extrusion supply amount decreases. and a blower, detects the outlet temperature of the hot air generator that preheats the granular objects in the hopper, and controls the temperature of the heater based on the detected output, and
The exhaust heat temperature of the hopper, which changes depending on the amount of granular material in the hopper supplied to the extruder, is detected, and the rotation speed of the blower is controlled based on the detected output.
[実 施 例]
以下、本発明の予熱制御方式を適用した制御装置の一例
を図によって説明する。[Example] Hereinafter, an example of a control device to which the preheating control method of the present invention is applied will be explained with reference to the drawings.
ブロア1と空気加熱器(ヒータ)2とで構成された熱風
発生装置14は、そのブロア1により空気加熱器2に空
気を圧送し、そこで加熱された空気は熱風発生装置14
の出口からホッパ9内に送り込まれる。このホッパ9は
押出機10の4二位に配設されていて、上部の粒状物体
供給口13から供給されたプラスチックスペレット等の
粒状物体11を格納すると共に、上記送り込まれた熱風
により同粒状物体11を加熱して押出機10に供給する
役目をする。また、ホッパ9内に送り込まれた熱風は、
ホッパ9内に収納された粒状物体11により熱を奪われ
なから排熱出口12より外部へ出るようになっている。A hot air generator 14 configured with a blower 1 and an air heater (heater) 2 uses the blower 1 to forcefully send air to the air heater 2, and the air heated there is sent to the hot air generator 14.
is fed into the hopper 9 from the outlet. This hopper 9 is disposed at the 42nd position of the extruder 10, and stores the granular objects 11 such as plastic pellets supplied from the granular object supply port 13 at the upper part, and the hopper 9 is used to store the granular objects 11 such as plastic pellets supplied from the granular object supply port 13 at the upper part. It serves to heat the object 11 and feed it to the extruder 10. In addition, the hot air sent into the hopper 9 is
The heat is not removed by the granular objects 11 housed in the hopper 9, and then exits to the outside through the exhaust heat outlet 12.
上記熱風発生装置14はその出口温度を熱風温度検出器
3によって測定されるようになっており、その検出温度
は同検出器3から検出出力として温度調節器5に入力さ
れ、同調節器5の出力信号は電力調整制御器7に入力さ
れる。この制御器7は上記調節器5の設定温度に見合っ
た制御信号を出力し、空気加熱器2への供給電力を調整
する役目をする。The outlet temperature of the hot air generator 14 is measured by a hot air temperature detector 3, and the detected temperature is inputted as a detection output from the detector 3 to the temperature controller 5. The output signal is input to the power adjustment controller 7. This controller 7 outputs a control signal commensurate with the set temperature of the regulator 5, and serves to adjust the power supplied to the air heater 2.
一方、上記排熱出口12の温度も排熱温度検出器4によ
って測られるようになっており、その検出温度の出力は
温度調節器6に入力され、同調節器6の出力信号は回転
数制御装置8に入力される。On the other hand, the temperature of the exhaust heat outlet 12 is also measured by the exhaust heat temperature detector 4, and the output of the detected temperature is input to the temperature regulator 6, and the output signal of the regulator 6 is used to control the rotation speed. It is input into the device 8.
この制御装置8は上記調節器6に設定した温度に見合っ
た制御信号を出力してブロア1の回転数を制御する役目
をする。This control device 8 outputs a control signal commensurate with the temperature set to the regulator 6 to control the rotation speed of the blower 1.
このように構成された本発明では、熱風発生装置14の
出口温度が測られて空気加熱器2の加熱温度が制御され
るのに加えて、排熱出口12の温度が検出されてこれに
よってブロア1の送風量が制御される。上記排熱出口1
2の温度は粒状物体11の押出供給量が多ければ下がり
、少なければ上がるという傾向を示す。従って、これに
よってブロア1の送風量を制御すれば常に一定の適正温
度に粒状物体11の予熱温度を保持することができる。In the present invention configured in this way, in addition to measuring the outlet temperature of the hot air generator 14 and controlling the heating temperature of the air heater 2, the temperature of the exhaust heat outlet 12 is detected and the blower is controlled accordingly. The air flow rate of 1 is controlled. Above exhaust heat outlet 1
The temperature of No. 2 tends to decrease as the extrusion supply amount of the granular material 11 increases, and increases as the amount decreases. Therefore, by controlling the amount of air blown by the blower 1, the preheating temperature of the granular material 11 can always be maintained at a constant appropriate temperature.
なお、風量制御は最低風量があるので、それ以下の制御
信号が入力されても最低風量を出力するように設定され
ている。Note that since the air volume control has a minimum air volume, it is set to output the minimum air volume even if a control signal lower than that is input.
また、粒状物体の押出機への供給量を連続して検出する
のは困難な場合には、押出機のスクリュー(図示せず)
の回転数から供給量を%出して、これをブロアの回転数
を制御する信号■としてもよいし、更にホッパ内から廃
風されるときの廃熱温度により粒状物体の押出機への供
給量を知ることができるので、これを利用してもよい。In addition, if it is difficult to continuously detect the amount of granular material supplied to the extruder, the extruder screw (not shown) may be used.
The feed rate can be calculated as a percentage from the rotation speed of the blower, and this can be used as a signal to control the blower rotation speed.Furthermore, the feed rate of the granular material to the extruder can be determined by the waste heat temperature when the air is discharged from the hopper. Since you can know this, you can use this.
即ち廃熱温度が上昇すれば押出機への粒状物体の供給量
は小、下降すれば押出機への供給量は大という具合に間
接的に押出機への粒状物体の供給量を知ることができる
ので、この廃熱温度を検出してブロアの回転数制御を行
なってもよい。In other words, if the waste heat temperature increases, the amount of granular material supplied to the extruder will be small, and if it decreases, the amount of granular material supplied to the extruder will be large, and so it is possible to indirectly know the amount of granular material supplied to the extruder. Therefore, the rotation speed of the blower may be controlled by detecting this waste heat temperature.
[発明の効果コ
以]二述べたように、本発明によれば従来の欠点は兄事
に解消されると共に、次のような顕著な効果が発揮され
る。[Effects of the Invention] As mentioned above, according to the present invention, the drawbacks of the conventional technology can be overcome, and the following remarkable effects can be achieved.
(1)風量はフロア駆動モータの回転数制御で調整され
るため、例えば風量が産性になれば、その動力は1/2
3に低減し省エネとなる。(1) Since the air volume is adjusted by controlling the rotation speed of the floor drive motor, for example, if the air volume becomes productive, the power will be halved.
3, resulting in energy savings.
(2)既設装置に容易に適用できる。(2) Can be easily applied to existing equipment.
(3)粒状物体の品質を変えることなく連続運転させる
ことかできる。(3) Continuous operation can be performed without changing the quality of granular objects.
(4)最低風量以下での運転は最低風州でもって運転さ
れるような構成手段を採用しているので、空気加熱器の
空たき等の危険性はない。(4) Since the system adopts a configuration that allows operation at a minimum air flow rate or lower, there is no danger of the air heater running dry.
図は、本発明の予熱制御方式の一例を示す線図である。
1・・・・・・・・・ブロア
2・・・・・・・・空気加熱器
3.4・・・温麿検出器
9・・・・・・・・・ホッパ
10・・・・・・押出機
11・・・・・・粒状物体(プラスチックスペレット)
= 7−The figure is a diagram showing an example of the preheating control method of the present invention. 1...Blower 2...Air heater 3.4...Onmaro detector 9...Hopper 10...・Extruder 11... Granular objects (plastic pellets)
= 7-
Claims (1)
しつつ押出機へ供給する粒状物体の予熱制御方式におい
て、 空気加熱器とブロアとで構成されていて、上記ホッパへ
熱風を送りホッパ内の粒状物体を予熱する熱風発生装置
の出口温度を検出して、この検出出力によって上記加熱
器の温度を制御する手段と、上記ホッパ内の粒状物体の
押出機への供給量により変化するホッパの排熱温度を検
出して、この検出出力により上記ブロアの回転数を制御
する手段と、 を具備していることを特徴とする粒状物体の予熱制御方
式。[Claims] A preheating control method for supplying granular objects stored in a hopper of an extruder to a constant temperature while preheating the granular objects to an extruder, comprising an air heater and a blower, the hopper means for detecting the outlet temperature of a hot air generator that sends hot air to preheat the granular objects in the hopper, and controlling the temperature of the heater based on the detected output; and supplying the granular objects in the hopper to the extruder. A method for preheating a granular object, comprising: means for detecting a temperature of exhaust heat from a hopper that changes depending on the quantity of heat, and controlling the rotation speed of the blower based on the detected output.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61043422A JPH071466B2 (en) | 1986-02-28 | 1986-02-28 | Preheating control method for granular objects |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61043422A JPH071466B2 (en) | 1986-02-28 | 1986-02-28 | Preheating control method for granular objects |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62202210A true JPS62202210A (en) | 1987-09-05 |
JPH071466B2 JPH071466B2 (en) | 1995-01-11 |
Family
ID=12663262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61043422A Expired - Lifetime JPH071466B2 (en) | 1986-02-28 | 1986-02-28 | Preheating control method for granular objects |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH071466B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7177534B2 (en) * | 2003-09-17 | 2007-02-13 | Air System Components, L.P. | System and method for controlling heating and ventilating systems |
US20180116367A1 (en) * | 2015-06-04 | 2018-05-03 | Shiseido Company, Ltd. | Cosmetic case |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54648U (en) * | 1978-04-29 | 1979-01-05 | ||
JPS5890610U (en) * | 1981-12-14 | 1983-06-20 | 住友電気工業株式会社 | Insulator extruder head temperature control device |
JPS6029502A (en) * | 1983-07-26 | 1985-02-14 | 株式会社東芝 | Controller for temperature of hot water tank |
-
1986
- 1986-02-28 JP JP61043422A patent/JPH071466B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54648U (en) * | 1978-04-29 | 1979-01-05 | ||
JPS5890610U (en) * | 1981-12-14 | 1983-06-20 | 住友電気工業株式会社 | Insulator extruder head temperature control device |
JPS6029502A (en) * | 1983-07-26 | 1985-02-14 | 株式会社東芝 | Controller for temperature of hot water tank |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7177534B2 (en) * | 2003-09-17 | 2007-02-13 | Air System Components, L.P. | System and method for controlling heating and ventilating systems |
US20180116367A1 (en) * | 2015-06-04 | 2018-05-03 | Shiseido Company, Ltd. | Cosmetic case |
Also Published As
Publication number | Publication date |
---|---|
JPH071466B2 (en) | 1995-01-11 |
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