JPH0719770Y2 - Dryer for synthetic resin molding materials - Google Patents

Dryer for synthetic resin molding materials

Info

Publication number
JPH0719770Y2
JPH0719770Y2 JP1988114843U JP11484388U JPH0719770Y2 JP H0719770 Y2 JPH0719770 Y2 JP H0719770Y2 JP 1988114843 U JP1988114843 U JP 1988114843U JP 11484388 U JP11484388 U JP 11484388U JP H0719770 Y2 JPH0719770 Y2 JP H0719770Y2
Authority
JP
Japan
Prior art keywords
hopper
air
pressure
drying
drying hopper
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 - Lifetime
Application number
JP1988114843U
Other languages
Japanese (ja)
Other versions
JPH0234212U (en
Inventor
修 峯林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawata Manufacturing Co Ltd
Original Assignee
Kawata Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawata Manufacturing Co Ltd filed Critical Kawata Manufacturing Co Ltd
Priority to JP1988114843U priority Critical patent/JPH0719770Y2/en
Publication of JPH0234212U publication Critical patent/JPH0234212U/ja
Application granted granted Critical
Publication of JPH0719770Y2 publication Critical patent/JPH0719770Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Drying Of Solid Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は、合成樹脂成形材料の乾燥装置、詳しくは、乾
燥ホッパと、成形機への供給ホッパと、材料タンクから
前記乾燥ホッパへの第1空気輸送系と、前記乾燥ホッパ
から前記供給ホッパへの第2空気輸送系とを備えた合成
樹脂成形材料の乾燥装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a dryer for a synthetic resin molding material, more specifically, a drying hopper, a feeding hopper to a molding machine, and a material tank to the drying hopper. The present invention relates to an apparatus for drying a synthetic resin molding material, which is provided with one pneumatic transportation system and a second pneumatic transportation system from the drying hopper to the supply hopper.

(従来の技術) 一般に、合成樹脂材料を乾燥して成形機に輸送する場
合、乾燥ホッパ及び成形機への供給ホッパには、空気と
輸送材料とを分離する分離機能を備えたローダタンクを
設け、このローダタンクに、吐出側を大気に開放したブ
ロワの吸引側を接続してこのブロワの吸引によって合成
樹脂成形材料を貯蔵する材料タンクから未乾燥材料を前
記乾燥ホッパへ、また乾燥した材料を前記乾燥タンクか
ら供給ホッパへ吸引輸送している。
(Prior Art) In general, when a synthetic resin material is dried and transported to a molding machine, a loader tank having a separation function for separating air and transportation material is provided in a drying hopper and a supply hopper to the molding machine. , The loader tank is connected to the suction side of a blower whose discharge side is open to the atmosphere, and the dry tank is filled with undried material from the material tank that stores the synthetic resin molding material by suction of the blower. The drying tank is suction-transported to the supply hopper.

そして、前記乾燥ホッパの下部排出口には、バッチゲー
ト弁を、又前記各ローダタンクの下部排出口には、ロー
ダ排出弁を設けて、前記バッチゲート弁の開閉で乾燥し
た材料を前記乾燥ホッパから排出し、又前記ローダ排出
弁の開閉で前記ローダタンクから材料を前記乾燥ホッパ
及び、前記供給ホッパへ排出して、前記材料タンクの材
料を乾燥して前記成形機に供給するようにしている。
A batch gate valve is provided at the lower discharge port of the drying hopper, and a loader discharge valve is provided at the lower discharge port of each of the loader tanks. The material dried by opening and closing the batch gate valve is provided in the drying hopper. The loader discharge valve is opened and closed to discharge the material from the loader tank to the drying hopper and the supply hopper so that the material in the material tank is dried and supplied to the molding machine. .

(考案が解決しようとする課題) ところが、このように吐出側を大気に開放したブロワの
吸引により材料を輸送し、又前記バッチゲート弁及びロ
ーダ排出弁等の材料に直接接触して、材料の流れを遮断
する開閉弁を用いて材料の流れを止めるようにしている
から吸引輸送中に大気よりゴミ等の異物が混入したり、
又、前記開閉弁の摩耗による微粉末が混入したり、前記
開閉弁の開閉時、該弁に材料が挟まれて粉砕され、材料
の平均粒度より小さい粒度の材料が発生することがあ
る。
(Problems to be solved by the invention) However, the material is transported by suction of the blower whose discharge side is open to the atmosphere as described above, and the material is directly contacted with the material such as the batch gate valve and the loader discharge valve, and Since the on-off valve that shuts off the flow is used to stop the flow of material, foreign matter such as dust may enter from the atmosphere during suction transportation.
Further, fine powder may be mixed due to wear of the on-off valve, or when the on-off valve is opened and closed, the material is sandwiched by the valve and crushed, so that a material having a particle size smaller than the average particle size of the material is generated.

従って、このような異物の混入及び平均粒度より小さな
粒度の発生が生ずる乾燥装置においては、これら異物の
混入を極端に嫌う、例えば光ディスクの基盤等を成形す
る合成樹脂成形材料には適用できない問題があった。
Therefore, in a drying device in which such foreign matters are mixed and a particle size smaller than the average particle size occurs, there is a problem that these foreign particles are extremely disliked and cannot be applied to, for example, a synthetic resin molding material for molding the base of an optical disk. there were.

本考案は、従来の技術の有するこのような問題に鑑みて
考案されたものであり、その目的とするところは、異物
の混入及び平均粒度より小さい粒度の発生を招くことな
く、合成樹脂成形材料を乾燥して成形機に供給できる合
成樹脂成形材料の乾燥装置を提供しようとするものであ
る。
The present invention has been devised in view of the above problems of the prior art, and an object thereof is to prevent the mixing of foreign matters and the generation of a particle size smaller than the average particle size, and a synthetic resin molding material. An object of the present invention is to provide a drying device for a synthetic resin molding material, which can dry the resin and supply it to a molding machine.

(課題を解決するための手段) 上記目的を達成するために、本考案における合成樹脂成
形材料の乾燥装置は、乾燥ホッパ(1)と成形機への供
給ホッパ(2)と、材料タンク(3)から前記乾燥ホッ
パ(1)への第1空気輸送系(A)と、前記乾燥ホッパ
(1)から前記供給ホッパ(2)への第2空気輸送系
(B)とを備えた乾燥装置であって、送風管(5A1)と
戻り管(5A2)とをもち、前記乾燥ホッパ(1)に脱湿
空気を供給する脱湿空気供給装置(5A)を設けて、前記
送風管(5A1)と戻り管(5A2)とを前記乾燥ホッパ
(1)に接続し、前記乾燥ホッパ(1)との間に脱湿空
気が循環する閉回路を成形する一方、前記第1及び第2
空気輸送系(A)(B)を閉回路として、前記第1空気
輸送系(A)の閉回路に、前記材料タンク(3)の材料
出口管(31)を接続すると共に、この接続部位に対し材
料流れの一側に第1圧送用ブロワ(2A1)を、他側に圧
送材料の第1分離器(1A)を介装し、この第1分離器
(1A)の出口管(1A1)を前記乾燥ホッパ(1)に接続
する一方、前記第2空気輸送系(B)の閉回路に、前記
乾燥ホッパ(1)の材料出口管(11)を接続すると共
に、この接続部位に対し材料流れの一側に第2圧送用ブ
ロワ(2B1)を、他側に圧送材料の第2分離器(1B)を
介装し、この第2分離器(1B)の出口管(1B1)を前記
供給用ホッパ(2)に接続したものである。
(Means for Solving the Problems) In order to achieve the above object, a drying device for a synthetic resin molding material according to the present invention comprises a drying hopper (1), a feeding hopper (2) for a molding machine, and a material tank (3). ) From the dry hopper (1) to the drying hopper (1) and a second air transport system (B) from the drying hopper (1) to the supply hopper (2). There is a dehumidifying air supply device (5A) which has a blower pipe (5A1) and a return pipe (5A2) and supplies dehumidified air to the drying hopper (1), and the blower pipe (5A1) A return pipe (5A2) is connected to the drying hopper (1) to form a closed circuit in which dehumidified air circulates between the drying hopper (1) and the first and second
The air transport system (A) (B) is a closed circuit, the material outlet pipe (31) of the material tank (3) is connected to the closed circuit of the first air transport system (A), and at this connection site. On the other hand, the first blower (2A1) for pressure feed is provided on one side of the material flow, and the first separator (1A) for the pressure feed material is provided on the other side, and the outlet pipe (1A1) of this first separator (1A) is provided. While being connected to the drying hopper (1), the material outlet pipe (11) of the drying hopper (1) is connected to the closed circuit of the second air transportation system (B), and the material flow is connected to this connection portion. The second blower (2B1) for pressure feeding is provided on one side, and the second separator (1B) for the pressure feeding material is provided on the other side, and the outlet pipe (1B1) of the second separator (1B) is used for the supply. It is connected to the hopper (2).

(作用) 前記脱湿空気供給装置(5A)と乾燥ホッパ(1)との間
において脱湿空気を閉回路を介し循環させて乾燥を行い
ながら、第1圧送用ブロワ(2A1)及び第2圧送用ブロ
ワ(2B1)により未乾燥の合成樹脂成形材料を材料タン
ク(3)から乾燥ホッパ(1)へ、また乾燥された合成
樹脂成形材料を乾燥ホッパ(1)から供給ホッパ(2)
へ圧送するから、これら合成樹脂成形材料を圧送する第
1及び第2空気輸送系(A)(B)は、外気より高圧に
なっているので、外部からのゴミ等の異物(コンタミネ
ーション)が侵入することはないし、しかも、圧送され
る材料の流れに直接接触する開閉弁を設けていないか
ら、開閉弁の摩耗による微粉末が装入する虞れがない
し、その上開閉弁の開閉時に材料が弁に挟まって砕かれ
材料の平均粒度より小さい粒度の発生を招くことがな
い。
(Function) While the dehumidified air is circulated through the closed circuit between the dehumidified air supply device (5A) and the drying hopper (1) for drying, the first pressure blower (2A1) and the second pressure feeding device Blower (2B1) for supplying undried synthetic resin molding material from material tank (3) to drying hopper (1), and supplying dried synthetic resin molding material from drying hopper (1) hopper (2)
Since the first and second pneumatic transportation systems (A) and (B) that pump these synthetic resin molding materials under pressure are higher than the outside air, foreign matter such as dust from the outside (contamination) is generated. It does not enter, and since there is no on-off valve that comes into direct contact with the flow of the material to be pumped, there is no fear that fine powder will be charged due to wear of the on-off valve. Will not be crushed by being sandwiched between valves and will not generate a particle size smaller than the average particle size of the material.

(実施例) 図面に示した合成樹脂成形材料の乾燥装置は、脱湿用空
気により材料を乾燥する乾燥ホッパ(1)と、成形機
(図示せず)へ乾燥した材料を供給する供給ホッパ
(2)と、材料を貯蔵する材料タンク(3)及び、この
材料タンク(3)から該材料を空気を利用して前記乾燥
ホッパ(1)へ輸送する第1空気輸送系(A)と、前記
乾燥ホッパ(1)から乾燥した材料を空気を利用して前
記供給ホッパ(2)へ輸送する第2空気輸送系(B)と
を備えている。
(Example) A synthetic resin molding material drying apparatus shown in the drawings includes a drying hopper (1) for drying a material with dehumidifying air and a supply hopper (for supplying a dried material to a molding machine (not shown)). 2), a material tank (3) for storing the material, a first air transport system (A) for transporting the material from the material tank (3) to the drying hopper (1) by using air, and A second air transportation system (B) for transporting the dried material from the drying hopper (1) to the supply hopper (2) by using air.

しかして、前記乾燥ホッパ(1)は密閉状として、該ホ
ッパ(1)の上部には、サイクロン形式の第1分離器
(1A)を配設するのであり、該分離器(1A)の下部に設
ける出口管(1A1)を前記乾燥ホッパ(1)の上壁に接
続している。そして、前記第1分離器(1A)の側壁に、
空気を圧送する第1圧送用ブロワ(2A1)を備えた第1
圧送装置(2A)の吐出側を第1圧送管(3A)を介して接
続すると共に、前記第1分離器(1A)の上壁に、前記第
1圧送装置(2A)の吸込側を第1戻り管(4A)を介して
接続し、又、前記材料タンク(3)の材料出口管(31)
を前記第1圧送管(3A)の途中に接続しており、前記第
1圧送装置(2A)から吐出する圧送空気により、前記材
料タンク(3)から材料を前記第1分離器(1A)を介し
て前記乾燥ホッパ(1)に圧送するのであって、前記第
1圧送装置(2A)と、第1圧送管(3A)及び第1戻り管
(4A)とにより前記第1空気輸送系(A)を形成してい
る。従って、前記第1圧送装置(2A)から吐出する圧送
空気は、該第1圧送装置(2A)の吐出側から前記第1圧
送管(3A)へ前記第1分離器(1A)及び前記第1戻り管
(4A)を介して前記第1圧送装置(2A)の吸入側へ循環
するのであって、前記第1空気輸送系(A)は閉回路を
構成するのである。
Therefore, the drying hopper (1) is hermetically sealed, and the cyclone type first separator (1A) is arranged on the upper part of the hopper (1), and the lower part of the separator (1A) is arranged. The provided outlet pipe (1A1) is connected to the upper wall of the drying hopper (1). Then, on the side wall of the first separator (1A),
First equipped with a first blower (2A1) for sending air under pressure
The discharge side of the pressure feeding device (2A) is connected via a first pressure feeding pipe (3A), and the suction side of the first pressure feeding device (2A) is first connected to the upper wall of the first separator (1A). The material outlet pipe (31) of the material tank (3) connected through the return pipe (4A)
Is connected in the middle of the first pressure feeding pipe (3A), and the material is fed from the material tank (3) to the first separator (1A) by the pressure feeding air discharged from the first pressure feeding device (2A). The pressure is fed to the drying hopper (1) through the first air feeding system (A) by the first pressure feeding device (2A), the first pressure feeding pipe (3A) and the first return pipe (4A). ) Is formed. Therefore, the compressed air discharged from the first pressure feeding device (2A) is transferred from the discharge side of the first pressure feeding device (2A) to the first pressure feeding pipe (3A) by the first separator (1A) and the first It circulates to the suction side of the first pressure feeding device (2A) through the return pipe (4A), and the first air transportation system (A) constitutes a closed circuit.

一方、前記供給ホッパ(2)も又、前記乾燥ホッパ
(1)と同じように密閉状にして、前記供給ホッパ
(2)の上部にも、サイクロン形式の第2分離器(1B)
を配設して、該分離器(1B)の下部に設ける出口管(1B
1)を前記供給ホッパ(2)の上壁に接続している。そ
して、前記第1空気輸送系(A)と同じように、前記第
2分離器(1B)の側壁と上壁とに、空気を吐出する第2
圧送用ブロワ(2B1)を備えた第2圧送装置(2B)の吐
出側を第2圧送管(3B)を介して、又吸入側を第2戻り
管(4B)を介してそれぞれ接続しており、又、前記乾燥
ホッパ(1)の材料出口管(11)を前記第2圧送管(3
B)の途中に接続して、前記乾燥ホッパ(1)から乾燥
した材料を前記第2分離器(1B)を介して前記供給ホッ
パ(2)に、前記第2圧送装置(2B)から吐出する空気
により圧送するのであって、前記第2圧送装置(2B)と
第2圧送管(3B)及び第2戻り管(4B)とにより前記第
2空気輸送系(B)を形成している。従って、前記第2
圧送装置(2B)から吐出する圧送空気は、該圧送装置
(2B)の吐出側から前記第2圧送管(3B)、前記第2分
離器(1B)及び前記第2戻り管(4B)を介して前記第2
圧送装置(2B)の吸入側へ循環するのであって、前記第
2空気輸送系(B)も閉回路を構成している。
On the other hand, the supply hopper (2) is also hermetically sealed in the same manner as the drying hopper (1), and the cyclone type second separator (1B) is also provided above the supply hopper (2).
And an outlet pipe (1B) provided below the separator (1B).
1) is connected to the upper wall of the supply hopper (2). Then, as in the first air transportation system (A), a second air discharging device is provided on the side wall and the upper wall of the second separator (1B).
The discharge side of the second pressure feeding device (2B) equipped with the pressure blower (2B1) is connected via the second pressure feeding pipe (3B), and the suction side is connected via the second return pipe (4B). The material outlet pipe (11) of the drying hopper (1) is connected to the second pressure feed pipe (3).
Connected in the middle of B), the dried material from the drying hopper (1) is discharged from the second pressure feeding device (2B) to the supply hopper (2) through the second separator (1B). The air is pressure fed, and the second pressure feeding device (2B), the second pressure feeding pipe (3B) and the second return pipe (4B) form the second air transportation system (B). Therefore, the second
The pressure-fed air discharged from the pressure-feeding device (2B) passes through the second pressure-feeding pipe (3B), the second separator (1B) and the second return pipe (4B) from the discharge side of the pressure-feeding device (2B). The second
It circulates to the suction side of the pressure feeding device (2B), and the second air transportation system (B) also constitutes a closed circuit.

所で、図面に示した実施例では、前記第1圧送装置(2
A)に前記第1圧送用ブロワ(2A1)と直列に流量制御弁
(2A2)を設けると共に、2つのラインフィルタ(2A3)
(2A3)を設けており、又、前記第1戻り管(4A)に
は、閉動作することによって前記第1空気輸送系(A)
における圧送空気の循環を遮断する第1モータバルブ
(4A1)を介装して、前記第1空気輸送系(A)の材料
圧送を行ったり、止めたりできるようにしている。更に
前記第1圧送管(3A)には、該圧送管(3A)と材料タン
ク(3)の材料出口管(31)との接続部位をバイパスす
るバイパス管(3A1)を設けており、該バイパス管(3A
1)に介装するバルブ(V)によって、前記材料タンク
(3)からの材料圧送量をコントロールできるようにし
ている。
In the embodiment shown in the drawings, the first pressure feeding device (2
A) is equipped with a flow control valve (2A2) in series with the first pressure blower (2A1) and two line filters (2A3)
(2A3) is provided, and the first return pipe (4A) is closed to cause the first air transportation system (A) to move.
The first motor valve (4A1) for interrupting the circulation of the compressed air in (1) is interposed to enable or stop the material pressure supply of the first air transportation system (A). Further, the first pressure feeding pipe (3A) is provided with a bypass pipe (3A1) for bypassing a connection portion between the pressure feeding pipe (3A) and the material outlet pipe (31) of the material tank (3). Pipe (3A
A valve (V) provided in 1) controls the amount of material pumped from the material tank (3).

一方、前記第2圧送装置(2B)にも、前記第2圧送用ブ
ロワ(2B1)の吸入側には、流量制御弁(2B2)を設ける
と共に、冷却器(2B4)及び並列に配置され、かつ、一
次側と二次側にバルブ(V)を設けた2つのラインフィ
ルタ(2B3)(2B3)を介装している。又、前記第2戻り
管(4B)には、閉動作することによって前記第2空気輸
送系(B)における圧送空気の循環を遮断する第2モー
タバルブ(4B1)を介装して、前記第2空気輸送系
(B)の材料圧送を行ったり、止めたりできるようにし
ている。更に、前記第2圧送管(3B)には、該圧送管
(3B)と前記乾燥ホッパ(1)の材料出口管(11)との
接続部位をバイパスする2つのバイパス管(3B1)(3B
2)を設けて、一方のバイパス管(3B2)に設けるバルブ
(MV)により前記乾燥ホッパ(1)からの材料圧送を止
め、又他方のバイパス管(3B1)に設けるバルブ(V)
により材料圧送量をコントロールできるようにしてい
る。
On the other hand, the second pressure feeding device (2B) is also provided with a flow rate control valve (2B2) on the suction side of the second pressure feeding blower (2B1), and is arranged in parallel with the cooler (2B4), and Two line filters (2B3) (2B3) provided with valves (V) on the primary side and the secondary side are interposed. Further, the second return pipe (4B) is provided with a second motor valve (4B1) for closing the circulation of the compressed air in the second air transportation system (B) by closing the second return pipe (4B1). 2 The material of the pneumatic transportation system (B) can be pumped or stopped. Further, in the second pressure feed pipe (3B), there are two bypass pipes (3B1) (3B) that bypass the connection portion between the pressure feed pipe (3B) and the material outlet pipe (11) of the drying hopper (1).
2) is provided so that the pressure feed of the material from the drying hopper (1) is stopped by the valve (MV) provided on one bypass pipe (3B2), and the valve (V) provided on the other bypass pipe (3B1).
The material feed amount can be controlled by.

又、前記乾燥ホッパ(1)の内部下方位置には吹出口
(12)を設けて、該吹出口(12)に、乾燥ヒータ(5A
4)を介装した後記する脱湿空気供給装置(5A)の送風
管(5A1)を接続すると共に、逆止弁(5A3)を介装した
前記供給装置(5A)の戻り管(5A2)を乾燥ホッパ
(1)の上壁に接続し、前記乾燥ホッパ(1)との間に
脱湿空気が循環する閉回路を形成して、前記第1空気輸
送系(A)により前記乾燥ホッパ(1)に圧送した材料
を前記脱湿空気供給装置(5A)からの脱湿空気によって
乾燥するようにしている。
A blowout port (12) is provided at a position below the inside of the drying hopper (1), and a drying heater (5A) is provided at the blowout port (12).
4) The blower pipe (5A1) of the dehumidified air supply device (5A), which will be described later, is connected, and the return pipe (5A2) of the supply device (5A) that is provided with the check valve (5A3) is connected. It is connected to the upper wall of the drying hopper (1) and forms a closed circuit with the drying hopper (1) in which dehumidified air circulates, and the drying hopper (1) is operated by the first air transport system (A). The material pressure-fed to () is dried by the dehumidified air from the dehumidified air supply device (5A).

前記脱湿空気供給装置(5A)は吸着筒(5A5)及び吐出
側と吸入側とに流量制御バルブ(5A6)(5A7)を備えた
乾燥ラインブロワ(5A8)とをもち、該ブロワ(5A8)に
より前記吸着筒(5A5)を通過して、前記吹出口(12)
から吹出す脱湿用空気をコントロールパネル(CP−1)
により制御するようにしている。
The dehumidified air supply device (5A) has an adsorption cylinder (5A5) and a drying line blower (5A8) equipped with flow rate control valves (5A6) (5A7) on the discharge side and the suction side, and the blower (5A8) Passing through the adsorption cylinder (5A5) by the
Dehumidifying air blown from the control panel (CP-1)
It is controlled by.

又、前記乾燥ホッパ(1)より小容量で、密閉状とした
前記供給ホッパ(2)の内部下方位置には、吹出口(2
2)を設けて、該吹出口(22)に、ラインブロワ(5B4)
及びヒータ(5B5)を備え、かつ、コントロールパネル
(CP−2)により温風を制御する温風供給装置(5B)の
送風管(5B1)を接続すると共に、逆止弁(5B3)を介装
した前記温風供給装置(5B)の戻り管(5B2)を前記供
給ホッパ(2)の上壁に接続して、前記第2空気輸送系
(B)により前記供給ホッパ(2)に圧送した乾燥して
いる材料を、前記温風供給装置(5B)から送られる温風
により保温できるようにしている。
Further, a blower outlet (2) is provided at a lower position inside the supply hopper (2) which has a smaller capacity than the drying hopper (1) and is hermetically sealed.
2) is provided, and the line blower (5B4) is installed at the outlet (22).
And a heater (5B5), and connected to the blower pipe (5B1) of the warm air supply device (5B) that controls the warm air by the control panel (CP-2), and also the check valve (5B3) The return pipe (5B2) of the warm air supply device (5B) is connected to the upper wall of the supply hopper (2), and is dried by pressure feeding to the supply hopper (2) by the second air transport system (B). The heated material can be kept warm by the warm air sent from the warm air supply device (5B).

以上のように構成する乾燥装置においては、まず前記第
1モータバルブ(4A1)を開放すると共に、前記流量制
御弁(2A2)により第1圧送装置(2A)からの圧送空気
の圧力を調節して、前記第1分離器(1A)内の圧力を、
前記乾燥ホッパ(2)内の脱湿用空気の圧力にバランス
させ、材料タンク(3)に貯蔵する未乾燥の材料を、前
記圧送空気によって前記第1分離器(1A)へ圧送し、該
第1分離器(1A)内で圧送空気と材料とを分離して、圧
送空気を前記第1圧送装置(2A)に戻す一方、前記出口
管(1A1)から材料を乾燥ホッパ(1)へ滞留させる。
このようにして乾燥ホッパ(1)に滞留する材料を、脱
湿空気供給装置(5A)から吹出口(12)を経て前記乾燥
ホッパ(1)内に吹出し、戻り管(5A2)を経て前記供
給装置(5A)へ循環する脱湿用空気によって乾燥させる
のである。
In the drying device configured as described above, first, the first motor valve (4A1) is opened, and the pressure of the compressed air from the first pressure feeding device (2A) is adjusted by the flow rate control valve (2A2). , The pressure in the first separator (1A),
The pressure of the dehumidifying air in the drying hopper (2) is balanced and the undried material stored in the material tank (3) is pressure-fed to the first separator (1A) by the pressure-fed air, (1) Separate the compressed air and the material in the separator (1A), and return the compressed air to the first pumping device (2A), while retaining the material from the outlet pipe (1A1) in the drying hopper (1). .
In this way, the material staying in the drying hopper (1) is blown into the drying hopper (1) from the dehumidifying air supply device (5A) through the air outlet (12), and is supplied through the return pipe (5A2). It is dried by the dehumidifying air circulating to the device (5A).

更に、前記第2図モータバルブ(4B1)を開放すると共
に、前記流量制御弁(2B2)により前記第2圧送装置(2
B)からの圧送空気の圧力を調節して、前記第2分離器
(1B)内の圧力を前記供給ホッパ(2)内の温風の圧力
にバランスさせ、前記乾燥ホッパ(1)で乾燥した材料
を、該ホッパ(1)の材料出口管(11)から前記圧送空
気によって前記第2分離器(1B)へ圧送し、該第2分離
器(1B)内で圧送空気と材料を分離して、圧送空気を前
記第2圧送装置(2B)に戻す一方、前記出口管(1B1)
から材料を供給ホッパ(2)へ滞留させる。そして、供
給ホッパ(2)に滞留する乾燥した材料を、温風供給装
置(5B)から吹出口(22)を経て前記供給ホッパ(2)
内に吹出す温風により保温して、前記成形機への供給に
備えるのである。
Further, the motor valve (4B1) shown in FIG. 2 is opened, and the second pressure feeding device (2
The pressure of the compressed air from B) is adjusted so that the pressure in the second separator (1B) is balanced with the pressure of warm air in the supply hopper (2), and drying is performed in the drying hopper (1). The material is pressure-fed from the material outlet pipe (11) of the hopper (1) to the second separator (1B) by the pressure-fed air, and the pressure-fed air and the material are separated in the second separator (1B). While returning the compressed air to the second pressure feeding device (2B), the outlet pipe (1B1)
The material is accumulated in the supply hopper (2). Then, the dried material staying in the supply hopper (2) is fed from the warm air supply device (5B) through the air outlet (22) to the supply hopper (2).
It is kept warm by the hot air blown into it and prepared for supply to the molding machine.

従って、合成樹脂成形材料を圧送する前記第1及び第2
圧送管(3A)(3B)は前記材料の圧送中は外気より高圧
になっているから、外気から圧送材料にゴミ等の異物が
混入することはない。又、第1及び第2モータバルブ
(4A1)(4B1)の作動によって第1及び第2空気輸送系
(A)(B)における圧送空気の循環を遮断することに
よって、圧送材料の流れを材料に直接接触する開閉弁を
用いることなく遮断することができるから、前記開閉弁
の摩耗による微粉末が圧送材料に直接混入することはな
いし、その上、従来例の如く、バッチゲート弁及びロー
ダ排出弁を設けていないから、これら開閉弁の開閉時に
材料が弁に挟って砕かれることがなく、材料の平均粒度
より小さい粒度の発生を招くことがない。
Therefore, the first and second pressure-feeding synthetic resin molding materials
Since the pressure feeding pipes (3A) and (3B) are at a higher pressure than the outside air during the pressure feeding of the material, foreign matters such as dust are not mixed into the pressure feeding material from the outside air. In addition, the flow of the pressure-feeding material is changed to the material by interrupting the circulation of the pressure-feeding air in the first and second air transportation systems (A) and (B) by operating the first and second motor valves (4A1) and (4B1). Since it can be shut off without using an on-off valve that is in direct contact, the fine powder due to wear of the on-off valve does not directly mix with the pressure-feeding material, and moreover, as in the conventional example, the batch gate valve and the loader discharge valve are not used. Since the valve is not provided, the material is not sandwiched between the valves when the opening / closing valve is opened / closed and is not crushed, and the particle size smaller than the average particle size of the material is not caused.

尚、前記送風管(5A1)に分岐管(5A9)を設けて、前記
第2圧送管(3B)へ脱湿空気を供給できるようにしてお
くと、前記第2圧送管(3B)における圧送途中の乾燥し
た材料が吸湿するのを避けることができるので好都合で
ある。
If a branch pipe (5A9) is provided on the blower pipe (5A1) so that dehumidified air can be supplied to the second pressure feed pipe (3B), the second pressure feed pipe (3B) will be in the middle of pressure feeding. This is advantageous since it is possible to avoid moisture absorption of the dried material.

又、本実施例では、合成樹脂成形材料の乾燥装置につい
て説明したが、空気輸送可能で、かつ、平均した粒度を
もつ合成樹脂成形材料以外の他の粒状材料の乾燥装置に
本考案を適用することも可能である。
Further, although the drying apparatus for the synthetic resin molding material has been described in the present embodiment, the present invention is applied to a drying apparatus for the granular material other than the synthetic resin molding material which is pneumatically transportable and has an average particle size. It is also possible.

(考案の効果) 以上の如く、本考案によれば、乾燥ホッパ(1)に脱湿
空気を供給する脱湿空気供給装置(5A)を、第1及び第
2空気輸送系(A)(B)とは別に設け、該脱湿空気供
給装置(5A)を前記乾燥ホッパ(1)に送風管(5A1)
と戻り管(5A2)とを介し接続して、乾燥ホッパ(1)
との間に脱湿空気が循環する閉回路を形成した上で、前
記第1及び第2空気輸送系(A)(B)を閉回路とし、
かつ、これら第1及び第2空気輸送系(A)(B)にお
いて、前記第1及び第2圧送用ブロワ(2A1)(2B1)か
らの圧送空気により合成樹脂成形材料を材料タンク
(3)から乾燥ホッパ(1)へ、又、該乾燥ホッパ
(1)から成形機への供給ホッパ(2)へそれぞれ圧送
するようにしたから、材料タンク(3)から供給ホッパ
(2)への圧送途中において、外気から圧送中の材料に
異物が混入することはないし、また、前記第1及び第2
圧送用ブロワ(2A1)(2B1)からの圧送空気により材料
を圧送する構成であるから、乾燥ホッパ(1)に接続す
る第1分離器(1A)及び供給ホッパ(2)に接続する第
2分離器(1B)には乾燥ホッパ及び供給ホッパ内の空気
の吸引を阻止するためのローダ排出弁を設ける必要がな
いことと、材料の圧送と、乾燥ホッパ(1)内への脱湿
空気の供給とを独立して行うことができて、乾燥ホッパ
(1)の下部にはバッチゲート弁を設ける必要がないこ
とから、前記各開閉弁の摩耗による微粉末が混入するこ
とはないし、その上、前記開閉弁の開閉時、該弁に挟ま
って材料が砕かれることがないから、圧送材料の平均粒
度より小さい粒度の発生を招くことがないのである。
(Effect of the Invention) As described above, according to the present invention, the dehumidified air supply device (5A) for supplying the dehumidified air to the drying hopper (1) is provided with the first and second air transportation systems (A) (B). ), And the dehumidified air supply device (5A) is provided to the drying hopper (1) with a blower pipe (5A1).
And the return pipe (5A2) to connect the drying hopper (1)
A closed circuit in which dehumidified air circulates, and the first and second air transportation systems (A) and (B) are closed circuits,
Moreover, in the first and second pneumatic transportation systems (A) and (B), the synthetic resin molding material is supplied from the material tank (3) by the pressure-fed air from the first and second pressure-fed blowers (2A1) and (2B1). Since the pressure is fed to the drying hopper (1) and to the feeding hopper (2) from the drying hopper (1) to the molding machine, during the pressure feeding from the material tank (3) to the feeding hopper (2). No foreign matter is mixed into the material being pumped from the outside air, and the first and second
Since the material is pressure-fed by the pressure-fed air from the pressure-fed blowers (2A1) (2B1), the first separator (1A) connected to the drying hopper (1) and the second separation connected to the supply hopper (2). The device (1B) does not need to be provided with a loader discharge valve for blocking the suction of air in the drying hopper and the supply hopper, the material is fed under pressure, and the dehumidified air is supplied into the drying hopper (1). Since it is not necessary to provide a batch gate valve in the lower part of the drying hopper (1), fine powder due to wear of each of the on-off valves is not mixed, and in addition, When the opening / closing valve is opened / closed, the material is not crushed by being sandwiched by the valve, so that the particle size smaller than the average particle size of the pressure-feed material is not generated.

従って、異物の混入や、平均粒度より小さい粒度の材料
の混入を極端に嫌う、例えば光ディスクの基盤等を成形
する合成樹脂成形材料であっても、異物の混入及び平均
粒度より小さい粒度の発生を招くことなく該材料を乾燥
して成形機に供給することができるのである。
Therefore, it is extremely reluctant to mix in foreign matter or material with a particle size smaller than the average particle size.For example, even in the case of a synthetic resin molding material for molding the base of an optical disc, the foreign material is mixed in and the particle size smaller than the average particle size is not generated. The material can be dried and fed to the molding machine without inviting.

【図面の簡単な説明】[Brief description of drawings]

図面は、本考案乾燥装置のフローシートである。 (1)……乾燥ホッパ (2)……供給ホッパ (3)……材料タンク (A)……第1空気輸送系 (B)……第2空気輸送系 (1A)……第1分離器 (1B)……第2分離器 (2A1)……第1圧送用ブロワ (2B1)……第2圧送用ブロワ The drawing is a flow sheet of the drying device of the present invention. (1) …… Drying hopper (2) …… Supply hopper (3) …… Material tank (A) …… First air transportation system (B) …… Second air transportation system (1A) …… First separator (1B) …… Second separator (2A1) …… First pressure blower (2B1) …… Second pressure blower

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】乾燥ホッパ(1)と成形機への供給ホッパ
(2)と、材料タンク(3)から前記乾燥ホッパ(1)
への第1空気輸送系(A)と、前記乾燥ホッパ(1)か
ら前記供給ホッパ(2)への第2空気輸送系(B)とを
備えた乾燥装置であって、送風管(5A1)と戻り管(5A
2)とをもち、前記乾燥ホッパ(1)に脱湿空気を供給
する脱湿空気供給装置(5A)を設けて、前記送風管(5A
1)と戻り管(5A2)とを前記乾燥ホッパ(1)に接続
し、前記乾燥ホッパ(1)との間に脱湿用空気が循環す
る閉回路を形成する一方、前記第1及び第2空気輸送系
(A)(B)を閉回路として、前記第1空気輸送系
(A)の閉回路に、前記材料タンク(3)の材料出口管
(31)を接続すると共に、この接続部位に対し材料流れ
の一側に第1圧送用ブロワ(2A1)を、他側に圧送材料
の第1分離器(1A)を介装し、この第1分離器(1A)の
出口管(1A1)を前記乾燥ホッパ(1)に接続する一
方、前記第2空気輸送系(B)の閉回路に、前記乾燥ホ
ッパ(1)の材料出口管(11)を接続すると共に、この
接続部位に対し材料流れの一側に第2圧送用ブロワ(2B
1)を、他側に圧送材料の第2分離器(1B)を介装し、
この第2分離器(1B)の出口管(1B1)を前記供給用ホ
ッパ(2)に接続したことを特徴とする合成樹脂成形材
料の乾燥装置。
1. A drying hopper (1), a feeding hopper (2) for a molding machine, and a drying hopper (1) from a material tank (3).
A blower pipe (5A1) comprising a first air transport system (A) to the supply hopper (2) and a second air transport system (B) from the drying hopper (1) to the supply hopper (2). And return pipe (5A
2) and a dehumidified air supply device (5A) for supplying dehumidified air to the drying hopper (1), and the blower pipe (5A).
1) and a return pipe (5A2) are connected to the drying hopper (1) to form a closed circuit for circulating dehumidifying air between the drying hopper (1) and the first and second The air transport system (A) (B) is a closed circuit, the material outlet pipe (31) of the material tank (3) is connected to the closed circuit of the first air transport system (A), and at this connection site. On the other hand, the first blower (2A1) for pressure feed is provided on one side of the material flow, and the first separator (1A) for the pressure feed material is provided on the other side, and the outlet pipe (1A1) of this first separator (1A) is provided. While being connected to the drying hopper (1), the material outlet pipe (11) of the drying hopper (1) is connected to the closed circuit of the second air transportation system (B), and the material flow is connected to this connection portion. 2nd pressure blower (2B
1), the second separator (1B) for pumping material is provided on the other side,
An outlet pipe (1B1) of the second separator (1B) is connected to the supply hopper (2), which is a dryer for a synthetic resin molding material.
JP1988114843U 1988-08-30 1988-08-30 Dryer for synthetic resin molding materials Expired - Lifetime JPH0719770Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988114843U JPH0719770Y2 (en) 1988-08-30 1988-08-30 Dryer for synthetic resin molding materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988114843U JPH0719770Y2 (en) 1988-08-30 1988-08-30 Dryer for synthetic resin molding materials

Publications (2)

Publication Number Publication Date
JPH0234212U JPH0234212U (en) 1990-03-05
JPH0719770Y2 true JPH0719770Y2 (en) 1995-05-10

Family

ID=31355959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988114843U Expired - Lifetime JPH0719770Y2 (en) 1988-08-30 1988-08-30 Dryer for synthetic resin molding materials

Country Status (1)

Country Link
JP (1) JPH0719770Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4132469B2 (en) * 1999-09-17 2008-08-13 株式会社カワタ Vacuum dryer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425070A (en) * 1977-07-26 1979-02-24 Mitsubishi Heavy Ind Ltd Device for recognizing stock bulk distribution in hold
JPS602101U (en) * 1983-06-17 1985-01-09 川崎重工業株式会社 Water cooling wall in fluidized bed of fluidized bed boiler
JPS60138194U (en) * 1984-02-25 1985-09-12 カラ−トロニツク株式会社 Dry hopper for drying synthetic resin
JPS60250914A (en) * 1984-05-29 1985-12-11 Matsuji Nakagome Plastic molding machine

Also Published As

Publication number Publication date
JPH0234212U (en) 1990-03-05

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