JPS6124628B2 - - Google Patents
Info
- Publication number
- JPS6124628B2 JPS6124628B2 JP14205882A JP14205882A JPS6124628B2 JP S6124628 B2 JPS6124628 B2 JP S6124628B2 JP 14205882 A JP14205882 A JP 14205882A JP 14205882 A JP14205882 A JP 14205882A JP S6124628 B2 JPS6124628 B2 JP S6124628B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- drying
- conveyor
- raw material
- semi
- 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
- 239000002994 raw material Substances 0.000 claims description 29
- 238000001035 drying Methods 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000002421 finishing Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 22
- 239000002245 particle Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 10
- 239000000796 flavoring agent Substances 0.000 description 6
- 238000005469 granulation Methods 0.000 description 6
- 230000003179 granulation Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 235000019634 flavors Nutrition 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 235000013365 dairy product Nutrition 0.000 description 2
- 235000013402 health food Nutrition 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Description
【発明の詳細な説明】
本発明は、顆粒又は粉末の乾燥品、例えば香
料、健康食品、医薬品、乳製品等を作るためのペ
ースト状の原料を乾燥する連続真空乾燥方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous vacuum drying method for drying pasty raw materials for producing dried granules or powders, such as perfumes, health foods, pharmaceuticals, dairy products, etc.
かかる連続真空乾燥方法は既にいくつか知られ
ており、通常ベルトコンベヤを用いた方法では、
原料ペーストをそのベルトコンベヤ上にノズルか
ら加圧して供給し、ベルトコンベヤ上で、主に高
温蒸気を熱源として、最終乾燥水域（水分２％
下）まで一挙に真空加熱乾燥して不定形塊とし、
乾燥工程終了後、大気中において粉砕、さらに粒
度調整をして製品化する方法が一般に使用されて
いる。ノズルから押出されてベルトコンベヤ上に
載置された原料は比較的に幅の狭い断面半円形状
のものであり、複数本のものが並列状態で送られ
て乾燥される。原料は半円形状で乾燥されるの
で、厚みが不均一であり、したがつて乾燥斑が生
じたり、或いは乾燥のための加熱により局部的に
温度が上昇して品質をそこなうという欠点があつ
た。 Several such continuous vacuum drying methods are already known, and methods that usually use a belt conveyor,
The raw material paste is supplied onto the belt conveyor under pressure from a nozzle, and the final drying area (moisture 2%
Below), vacuum heat and dry it all at once to form an amorphous mass.
After the drying process is completed, a method is generally used in which the material is pulverized in the atmosphere, and the particle size is further adjusted to produce a product. The raw material extruded from the nozzle and placed on the belt conveyor has a relatively narrow semicircular cross section, and a plurality of raw materials are sent in parallel and dried. Because the raw materials are dried in a semicircular shape, the thickness is uneven, resulting in uneven drying, and the heating for drying causes localized temperature rises that impair quality. .
また原料は幅の狭い帯状体としてベルトコンベ
ヤ上に載置されるので、隣接する帯状体の間の空
間はデツドスペースになり、ベルトコンベヤを有
効利用できず、また最終乾燥水域までベルトコン
ベア上で、乾燥させるため、長いベルトコンベア
が必要となり、結果的には装置が大型化し、真空
設備も大きくなる。 In addition, since the raw material is placed on the belt conveyor as a narrow strip, the space between adjacent strips becomes a dead space, making it impossible to use the belt conveyor effectively. For drying, a long conveyor belt is required, resulting in a larger device and larger vacuum equipment.
一般にかかる原料の乾燥作業は、真空中におい
て、急激な温度、圧力の変化を与えず、最終製品
形体まで、全て一貫処理することが、品質的、衛
生的にも好ましい。しかしながら真空中で運転可
能な機器の製作、電気装置、動力の伝達シール方
法等が困難なことから実現されていなかつた。 In general, it is preferable in terms of quality and hygiene to dry the raw materials in a vacuum, without applying sudden changes in temperature or pressure, and to perform the entire drying process up to the final product form. However, this has not been realized due to difficulties in manufacturing equipment that can operate in a vacuum, electrical equipment, and power transmission sealing methods.
したがつて本発明の目的は、真空中でベルトコ
ンベア上の幅一杯に均一な厚みの乾燥に適した発
泡薄膜を、別途に実用新案登録出願している原料
供給スリツトを介して形成させ、遠赤外線の有効
利用により一次乾燥をし、この半乾燥品を粉砕し
て粒度調整し容積効果を高めた後、二次乾燥して
製品化することで、ベルトコンベアの有効利用が
できると共に、、装置全体は比較的に乾燥の早い
半乾燥品までの一次乾燥に必要な能力におおよそ
等しい装置の大きさまで縮少することができ、従
つて加熱、真空設備の容量が小さくてすみ、効率
よく省エネルギーであり、真空中での一貫製造に
より、人手をかけずに高品質、且つ衛生的な製品
を作ることができる連続真空乾燥方法を提供する
にある。 Therefore, the object of the present invention is to form a foamed thin film suitable for drying with a uniform thickness over the width of a belt conveyor in a vacuum through a raw material supply slit for which a separate utility model registration application has been filed. By performing primary drying by effective use of infrared rays, pulverizing this semi-dried product to adjust the particle size and increasing the volumetric effect, and then performing secondary drying to produce products, belt conveyors can be used effectively, and the equipment can be The overall size of the equipment can be reduced to approximately the same capacity as the capacity required for primary drying of semi-dry products that dry relatively quickly, and therefore the capacity of heating and vacuum equipment is small, making it efficient and energy-saving. The purpose of the present invention is to provide a continuous vacuum drying method capable of producing high-quality and hygienic products without manual labor through integrated production in vacuum.
本発明によれば、原料ペーストを真空中に設け
たベルトコンベヤの実質的に幅全体に渡つて均一
な厚みで流出させ、その際に真空の作用で発泡
し、均一な中間乾燥水域（水分８〜10％）までベ
ルトコンベヤ上で加熱して、また必要に応じて蒸
発潜熱に相当する熱量、もしくはそれより大きな
熱量を補給して乾燥し、その後、シユレツダーで
長手方向に栽断し、次いでクラツシヤにより粒度
調節し、その間真空による低温乾燥を行い、さら
に、真空撹拌槽で乾燥し、以て均一な粉状又は粒
状の製品を得ることができる。 According to the present invention, the raw material paste is flowed out with a uniform thickness over substantially the entire width of a belt conveyor installed in a vacuum, and at this time, the material paste is foamed by the action of the vacuum, and a uniform intermediate dry zone (moisture 8 ~10%) on a belt conveyor, and if necessary, supplement the amount of heat equivalent to the latent heat of vaporization, or a larger amount of heat for drying, then cut the material in the longitudinal direction with a shredder, and then crush it. The particle size can be adjusted by adjusting the particle size, during which low temperature drying is performed using a vacuum, and further drying is performed in a vacuum stirring tank, thereby making it possible to obtain a uniform powder or granular product.
本発明の実施に際して原料ペーストを流出させ
るには真空作用を利用し、網目すなわちグリツド
を備えた細長い隙間を通して行うのが好ましい。
このようにすることによつて真空により発泡した
均一な厚みを有する乾燥に適した発泡薄膜体を真
空中において得ることができる。この発泡薄膜体
はベルトコンベヤ上で水分８〜10％まで乾燥すれ
ばよいので、ベルトコンベヤは短くてすみ、装置
全体を小形化できる。従来のベルトコンベア上で
最終乾燥水域まで乾燥させるのに必要なコンベア
の長さに比較して、同程度の製造能力を有する本
発明を実施した場合のコンベアの長さは少くとも
1/5以下に縮少することができる。シユレツダー
で長手方向に栽断された発泡薄膜体は比較的長さ
が短い短冊状態となつてクラツシヤに落下し、こ
こで粒度が調節される。またこれらの工程および
撹拌槽においても真空中で処理されるので、その
間に乾燥され、水分２％以下の粒度調整された乾
燥製品が得られる。 In the practice of the present invention, the raw paste is preferably discharged by means of a vacuum through elongated gaps provided with a mesh or grid.
By doing so, it is possible to obtain a foamed thin film material which is foamed under vacuum and has a uniform thickness and is suitable for drying. Since this foamed thin film body only needs to be dried to a moisture content of 8 to 10% on a belt conveyor, the belt conveyor can be shortened and the entire apparatus can be made smaller. Compared to the length of the conveyor required to dry to the final drying zone on a conventional belt conveyor, the length of the conveyor when implementing the present invention with a similar manufacturing capacity is at least
It can be reduced to 1/5 or less. The foam thin film body cut in the longitudinal direction by the shredder becomes relatively short strips and falls into the crusher, where the particle size is adjusted. Furthermore, since these steps and the stirring tank are also processed in a vacuum, the product is dried during this time, and a dried product with a moisture content of 2% or less and whose particle size is adjusted is obtained.
次に図面を参照して本発明を実施する装置につ
いて説明する。 Next, an apparatus for implementing the present invention will be described with reference to the drawings.
図面において原料フイードタンク１には原料Ｓ
が供給されるようになつており、その供給作業は
ハツチ２をあけて手作業で入れるか、または図示
しない高粘度用ポンプで自動供給することができ
る。この原料Ｓは水分20〜40％程度のペースト状
のものであり、ベルトコンベヤ上に均一な発泡薄
膜体を形成させるに適する粘度は8000〜15000セ
ンチポアーズ程度である。この原料フイードタン
ク１は温度調節用の冷熱媒ジヤケツト３を備え、
温調タンク４内の液がポンプ５によつてライン６
を介して冷熱媒ジヤケツト３に供給され、そして
ライン７を介して温調タンク４に循環するように
なつており、温調タンク４内の液は冷凍機８と図
示しないヒーターとによつて温度調節される。そ
の温度は原料が適切な粘度（8000〜15000センチ
ポアズ）となるための温度例えば−30℃ないし60
℃に調節されている。 In the drawing, raw material feed tank 1 contains raw material S.
can be supplied manually by opening the hatch 2, or automatically by using a pump for high viscosity (not shown). This raw material S is in the form of a paste with a water content of about 20 to 40%, and has a viscosity of about 8,000 to 15,000 centipoise, which is suitable for forming a uniform foamed thin film on a belt conveyor. This raw material feed tank 1 is equipped with a cooling/heating medium jacket 3 for temperature adjustment,
The liquid in the temperature control tank 4 is transferred to the line 6 by the pump 5.
The liquid in the temperature regulating tank 4 is supplied to the cooling/heating medium jacket 3 via the line 7, and the liquid in the temperature regulating tank 4 is kept at a temperature by a refrigerator 8 and a heater (not shown). adjusted. The temperature is such that the raw material has an appropriate viscosity (8,000 to 15,000 centipoise), e.g. -30℃ to 60℃.
It is regulated to ℃.
原料フイードタンク１はその下部に出口１１を
備え、その出口１１に至る原料はモータ１０で作
動するゲートバルブ９で流量調節されるようにな
つている。この出口１１は造粒室１３を区画して
いるケーシング１２の中に設けられており、そし
てベルトコンベアの幅方向に細長いスリツト状に
開口している。したがつて出口１１から流出する
原料は薄膜状である。ケーシング１２には真空ポ
ンプ１５に連結されたライン１４が接続されてお
り、ケーシング１２中は真空になつている。本発
明の実施に際して真空ポンプ１５の真空値は通常
0.1ないし1.0torr程度が最も好ましく、運転可能
な真空値は10torr以下である。真空値が10torr程
度では処理能力が低下し、真空値15torrに於ては
出口１１から流出した原料はベルトコンベア上で
発泡薄膜を形成しない。 The raw material feed tank 1 has an outlet 11 at its lower part, and the flow rate of the raw material reaching the outlet 11 is regulated by a gate valve 9 operated by a motor 10. This outlet 11 is provided in a casing 12 that partitions a granulation chamber 13, and is opened in the shape of an elongated slit in the width direction of the belt conveyor. Therefore, the raw material flowing out from the outlet 11 is in the form of a thin film. A line 14 connected to a vacuum pump 15 is connected to the casing 12, and the inside of the casing 12 is evacuated. When implementing the present invention, the vacuum value of the vacuum pump 15 is usually
The most preferable value is about 0.1 to 1.0 torr, and the operable vacuum value is 10 torr or less. At a vacuum value of about 10 torr, the processing capacity decreases, and at a vacuum value of 15 torr, the raw material flowing out from the outlet 11 does not form a foamed thin film on the belt conveyor.
ケーシング１２内の造粒室１３にはベルトコン
ベヤ１６が設けられ、その一端は出口１１の所に
位置している。したがつて出口１１から流出した
原料は真空作用により発泡し、均一な厚みの発泡
薄膜体としてコンベヤ１６上に載置される。ここ
で使用されるコンベアは耐熱性、強度及び熱供給
の点から炭素又はガラス繊維を主材としたもの
で、厚みの薄い例えば0.2〜0.5mmのものが好まし
い。コンベヤ１６の上下には遠赤外線装置１７，
１８が設けられている。したがつてコンベヤ１６
上の原料は上下から加熱することも可能である。 A belt conveyor 16 is provided in the granulation chamber 13 within the casing 12 , one end of which is located at the outlet 11 . Therefore, the raw material flowing out from the outlet 11 is foamed by the vacuum action and placed on the conveyor 16 as a foamed thin film having a uniform thickness. The conveyor used here is preferably one whose main material is carbon or glass fiber from the viewpoint of heat resistance, strength, and heat supply, and is thin, for example, 0.2 to 0.5 mm. Far infrared devices 17 are installed above and below the conveyor 16,
18 are provided. Therefore conveyor 16
The raw materials above can also be heated from above and below.
真空中で物体を非接触で加熱乾燥する場合、熱
の空間伝導及び対流現象による熱の伝達効果はき
わめて小さく、0.1torr付近においては無に等し
いものであるが、熱輻射効果については大気中に
おけるその効果と同等もしくはそれ以上に熱伝達
に有効に作用し、厚みの薄いポーラスな物体、例
えば発泡薄膜体のような物体には熱輻射線は物体
の表面上に止まらず物体内部までにも作用する。
またてこの方法で加熱された物体は局部加熱を起
しにくい。 When heating and drying an object in a vacuum without contact, the heat transfer effect due to spatial conduction and convection phenomena is extremely small and is nil at around 0.1 torr, but the thermal radiation effect is similar to that in the atmosphere. It works equally or even more effectively on heat transfer, and for thin porous objects, such as foamed thin film objects, thermal radiation does not stop at the surface of the object, but also affects the inside of the object. do.
Also, objects heated by leverage are less likely to cause local heating.
したがつて真空中で水分10％以上の発泡薄膜体
を効率よく加熱乾燥する手段として熱輻射線を多
量に発する遠赤外線装置の使用が好ましい。また
遠赤外線装置の投射波長は2.7ミクロン程度の水
の吸収波長に合せたものが、最も効果的である。 Therefore, it is preferable to use a far-infrared device that emits a large amount of thermal radiation as a means for efficiently heating and drying a foam thin film having a water content of 10% or more in a vacuum. Furthermore, it is most effective to use a far-infrared device whose projection wavelength matches the absorption wavelength of water, which is about 2.7 microns.
本発明の実施に際して、コンベヤ１６上に形成
された発泡薄膜体は幅600mm、厚さ２〜６mmであ
り、この厚さはゲートバルブ９の開度とコンベヤ
１６の速度によつて調節される。そのときの温度
は真空のための水分の自己蒸発による潜熱で温度
が降下し、遠赤外線装置１７、プレートヒータ１
８によつて加熱されて−５℃ないし60℃になる。
例えば真空値が1torrから3.5torrになると、温度
は−５℃から零℃に上昇する。 In carrying out the present invention, the foam thin film formed on the conveyor 16 has a width of 600 mm and a thickness of 2 to 6 mm, and this thickness is adjusted by the opening degree of the gate valve 9 and the speed of the conveyor 16. At that time, the temperature drops due to latent heat due to self-evaporation of moisture due to the vacuum, and the far infrared device 17 and plate heater 1
8 to -5°C to 60°C.
For example, when the vacuum value goes from 1 torr to 3.5 torr, the temperature increases from -5°C to 0°C.
このようにしてコンベヤ１６上を送られた発泡薄
膜体はコンベヤ１６の他端２０の近くにくると水
分は８〜10％まで乾燥される。その間の所要時間
は１ないし２分が好ましい。When the foamed thin film body sent on the conveyor 16 in this manner comes near the other end 20 of the conveyor 16, the moisture content is dried to 8 to 10%. The time required for this is preferably 1 to 2 minutes.
コンベヤ１６の他端部２０に達した発泡薄膜体
の半乾燥品はドグナイフ２１でコンベヤ１６から
剥離され、そしてシユレツダ２２で長手方向に栽
断される。したがつて短冊状のものが形成される
が、半乾燥品のため、途中で折れて、長さは10〜
50mm程度のものとなる。シユレツダ２２で栽断さ
れる幅は５mm程度である。 The semi-dried foamed thin film product that has reached the other end 20 of the conveyor 16 is peeled off from the conveyor 16 by a dog knife 21 and shredded in the longitudinal direction by a shredder 22. As a result, strips are formed, but because they are semi-dry, they break midway and the length is 10~10 cm.
It will be about 50mm. The width cut by the shredder 22 is about 5 mm.
このようにシユレツダ２２で栽断された短冊状
の半乾燥品はホツパ２３に投入されて、ホツパ２
３の下部に設けたクラツシヤ２４に導かれる。ク
ラツシヤ２４によつて解砕された半乾燥品は粒度
選別用スクリーン２５を通つてケーシング１２の
下部に設けたスクリユーコンベヤ２６に落下す
る。このスクリユーコンベヤ２６に落下したもの
は一定粒度の半乾燥品であつて、その温度は−５
℃〜＋５℃である。 The strip-shaped semi-dried products chopped by the shredder 22 in this way are put into the hopper 23, and then
3 is guided to a crusher 24 provided at the bottom of The semi-dry product crushed by the crusher 24 passes through a particle size sorting screen 25 and falls onto a screw conveyor 26 provided at the bottom of the casing 12. The material falling onto this screw conveyor 26 is a semi-dried product with a constant particle size, and its temperature is -5
℃~+5℃.
一定粒度の半乾燥品はスクリユーコンベヤ２６
からライン２７を介して撹拌槽２８に送られる。
図面では撹拌槽２８は１台しか図示されていない
けれども、本発明の実施に際して撹拌槽２８は２
台設け、スクリユーコンベヤ２６で交互に切換輸
送するように構成すると、連続作業が可能とな
る。 Screw conveyor 26 is used for semi-dry products with a constant particle size.
From there, it is sent to a stirring tank 28 via a line 27.
Although only one stirring tank 28 is shown in the drawing, two stirring tanks 28 will be used when implementing the present invention.
If a stand is provided and the screw conveyor 26 is configured to alternately switch and transport, continuous work becomes possible.
この撹拌槽２８は二次乾燥を行うものであり、
圧力は10torr以下で、水分２％以下になるまで乾
燥する。その際必要に応じて10〜75℃で加熱作業
を行えるようになつている。撹拌槽２８はモータ
２９によつて２〜8rpmの低速回転で製品の形体
を損わないような速度で断続反転撹拌している。
そして撹拌槽２８にはライン３０を介して真空ポ
ンプ１５が接続され、撹拌槽２８内を所定の真空
値に維持しており、また撹拌槽２８に設けたジヤ
ケツト３１には温水タンク３２からの温水がポン
プ３３によつて送られるようになつている。この
温水は10℃ないし75℃に加温されている。 This stirring tank 28 performs secondary drying,
The pressure is 10 torr or less and the moisture content is 2% or less. At that time, heating work can be performed at 10 to 75 degrees Celsius if necessary. The stirring tank 28 is rotated by a motor 29 at a low speed of 2 to 8 rpm for intermittent inversion stirring at a speed that does not damage the shape of the product.
A vacuum pump 15 is connected to the stirring tank 28 via a line 30 to maintain the inside of the stirring tank 28 at a predetermined vacuum value, and a jacket 31 provided in the stirring tank 28 is supplied with hot water from a hot water tank 32. is supplied by a pump 33. This hot water is heated to between 10°C and 75°C.
撹拌槽２８において顆粒状の半乾燥品は約３時
間撹拌され水分２％程度の製品に乾燥された後、
ハツチ３４を開いて製品を取り出す。 The granular semi-dried product is stirred in the stirring tank 28 for about 3 hours and dried to a product with a moisture content of about 2%.
Open the hatch 34 and take out the product.
図中ベルトコンベア１６及びシユレツダー２２
は一体となつており、造粒室１３を区画している
前後の扉４１ａ，４１ｂを開いてケーシング１２
の両側面に設けられた図示しないガイドレールに
よつて造粒室１３より前後の扉４１ａ，４１ｂの
どちらのの方向へも約2/3程度引出すことがで
き、コンベヤ角度を約10度変化させることも可能
である。これは造粒室１３内及び原料フイードタ
ンク１の洗浄を完壁に行う為と、機器の清掃、調
整をたやすくする為である。またこのような機構
の採用もベルトコンベアの効率を上げ、短く小型
化できた結果により容易になる。 Belt conveyor 16 and shredder 22 in the figure
are integrated, and the front and rear doors 41a and 41b that partition the granulation chamber 13 are opened to open the casing 12.
By means of guide rails (not shown) provided on both sides of the granulation chamber 13, it can be pulled out by about 2/3 in either direction of the front or rear doors 41a, 41b, changing the conveyor angle by about 10 degrees. It is also possible. This is to completely clean the inside of the granulation chamber 13 and the raw material feed tank 1, and to facilitate cleaning and adjustment of the equipment. Also, adoption of such a mechanism becomes easier as the belt conveyor becomes more efficient and shorter and more compact.
V1，V2は造粒室１３および撹拌槽２８の真空
度を調節するためのバルブであり、４０はベルト
コンベヤ１６を扉４１ｂより引出し、原料フイー
ドタンクの出口１１の直下まで昇降できる洗浄受
皿で、原料フイードタンク１の内部洗浄排水を周
囲をよごさず外部に排出するための設備である。 V 1 and V 2 are valves for adjusting the degree of vacuum in the granulation chamber 13 and the stirring tank 28, and 40 is a cleaning tray that can be raised and lowered to just below the outlet 11 of the raw material feed tank by pulling out the belt conveyor 16 from the door 41b. , is a facility for discharging the internal cleaning wastewater of the raw material feed tank 1 to the outside without polluting the surrounding area.
以上の如く本発明によればペースト状の原料例
えば含水率20〜40％のものを真空中でコンベヤ上
に発泡薄膜状に流出させ、コンベヤ上で一次乾燥
を行い、シユレツダで長手方向に短冊状に栽断
し、その後クラツシヤで一定粒度に調整し、次い
で撹拌槽において、二次乾燥を行うので、水分２
％以下の同一粒状の製品を得ることができる。こ
れらの作業はすべて真空中で行われるので、乾燥
作業は比較的低温のもとに行うことができ、特に
熱分解されやすい物質についても品質を損うこと
がない。また、この発泡薄膜体は無数の気泡によ
り乾燥表面積が非常に大きくなつているため乾燥
しやすく、なお水分を比較的多く残した状態で栽
断処理するので、コンベア部分は短くて済み、粒
度調整された製品形体の半乾燥品は、比容積効果
を高めると同時に解砕によりさらに乾燥表面積は
大きくなり、二次乾燥をより一層容易にする。 As described above, according to the present invention, a paste-like raw material, for example, one with a moisture content of 20 to 40%, is flowed onto a conveyor in a vacuum in the form of a foamed thin film, primary dried on the conveyor, and shredded into strips in the longitudinal direction. After that, the particle size is adjusted to a constant size using a crusher, and then secondary drying is performed in a stirring tank, so that the moisture content is reduced to 2.
% or less of the same granular product can be obtained. Since all of these operations are carried out in a vacuum, the drying operations can be carried out at relatively low temperatures without compromising the quality of substances that are particularly susceptible to thermal decomposition. In addition, this foam thin film has a very large dry surface area due to countless air bubbles, so it dries easily, and since it is chopped with a relatively large amount of moisture remaining, the conveyor section can be short and the particle size can be adjusted. The semi-dried product in the form of a semi-dried product not only increases the specific volume effect but also increases the drying surface area by crushing, making secondary drying even easier.
結果的には装置全体の大きさは一次乾燥に必要
な設備能力におおよそ等しい程度まで、加熱、真
空設備は、小形化された設置面積の縮小と同時に
省エネルギーである。また原料から製品まで一貫
製造であることから、衛生的であり、食品、薬品
等の製造に適している。特に低温で処理するの
で、フレーバーをもつ物質に急激な温度、圧力の
変化を与えず、ペーパーと共にフレーバーが飛び
出すことがなく、また加熱により新たにクツキン
グフレーバーが生ずることもない。また水分が多
い乾燥初期に水分と共にフレーバーが飛ぶオフフ
レーバーが生じやすいが、本発明では一次および
二次に乾燥工程を分けて一次乾燥では一挙に乾燥
させず、まだ水分を比較的多く残した状態までの
乾燥を行うためオフフレーバーが生じない。 As a result, the size of the entire device is approximately equal to the equipment capacity required for primary drying, and the heating and vacuum equipment is miniaturized, reducing the installation area and saving energy. Furthermore, since it is an integrated manufacturing process from raw materials to finished products, it is hygienic and suitable for manufacturing foods, medicines, etc. In particular, since the process is carried out at a low temperature, the flavor-bearing substance is not subjected to sudden changes in temperature or pressure, the flavor does not come out together with the paper, and no new crunching flavor is generated due to heating. In addition, in the early stages of drying when there is a lot of moisture, off-flavors tend to occur, where the flavor evaporates along with the moisture.However, in this invention, the primary and secondary drying processes are separated, and the primary drying is not dried all at once, leaving a relatively large amount of moisture remaining. No off-flavors occur as the drying process is performed until
したがつて本発明は均一な顆粒又は粉末状の乾
燥品、例えば香料、健康食品、医薬品、粉末乳製
品等に極めて好適に実施できる。 Therefore, the present invention can be very suitably applied to uniform granular or powdered dried products such as fragrances, health foods, pharmaceuticals, powdered dairy products, and the like.
図面は本発明を実施する装置の説明図である。
１……原料フイードタンク、９……ゲートバル
ブ、１６……コンベヤ、１７，１８……遠赤外線
装置、２１……シユレツダ、２４……クラツシ
ヤ、２８……撹拌槽。
The drawing is an explanatory diagram of an apparatus for implementing the present invention. 1... Raw material feed tank, 9... Gate valve, 16... Conveyor, 17, 18... Far infrared device, 21... Shredder, 24... Crusher, 28... Stirring tank.
Claims (1)
ト状の原料を流出させ、その原料を加熱して乾燥
させて半乾燥品を作り、その半乾燥品を長手方向
に栽断して短冊状とし、その短冊状の半乾燥品を
クラツシヤで粉砕して顆粒又は粉末状とし、その
半乾燥品を撹拌槽において仕上げ乾燥して原料か
ら製品まで一貫製造することを特徴とする連続真
空乾燥方法。1 A paste-like raw material is flowed in a thin film onto a conveyor in a vacuum, the raw material is heated and dried to produce a semi-dry product, the semi-dry product is cut into strips in the longitudinal direction, and the A continuous vacuum drying method characterized by pulverizing a strip-shaped semi-dried product in a crusher to form granules or powder, and finishing and drying the semi-dry product in a stirring tank to produce an integrated product from raw materials to products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14205882A JPS5932775A (en) | 1982-08-18 | 1982-08-18 | Continuous vacuum drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14205882A JPS5932775A (en) | 1982-08-18 | 1982-08-18 | Continuous vacuum drying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5932775A JPS5932775A (en) | 1984-02-22 |
| JPS6124628B2 true JPS6124628B2 (en) | 1986-06-11 |
Family
ID=15306432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14205882A Granted JPS5932775A (en) | 1982-08-18 | 1982-08-18 | Continuous vacuum drying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5932775A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07104212B2 (en) * | 1990-07-27 | 1995-11-13 | 日本碍子株式会社 | Heating device and manufacturing method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0620481B2 (en) * | 1985-03-28 | 1994-03-23 | 株式会社日阪製作所 | Vacuum belt dryer |
| JPS61295913A (en) * | 1985-06-25 | 1986-12-26 | Okawara Mfg Co Ltd | Belt conveyor in belt-type vacuum drying machine |
-
1982
- 1982-08-18 JP JP14205882A patent/JPS5932775A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07104212B2 (en) * | 1990-07-27 | 1995-11-13 | 日本碍子株式会社 | Heating device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5932775A (en) | 1984-02-22 |
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