JPH08281495A - Fine powder briquetting machine - Google Patents

Fine powder briquetting machine

Info

Publication number
JPH08281495A
JPH08281495A JP10806195A JP10806195A JPH08281495A JP H08281495 A JPH08281495 A JP H08281495A JP 10806195 A JP10806195 A JP 10806195A JP 10806195 A JP10806195 A JP 10806195A JP H08281495 A JPH08281495 A JP H08281495A
Authority
JP
Japan
Prior art keywords
hopper
fine powder
space
raw material
screw feeder
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.)
Pending
Application number
JP10806195A
Other languages
Japanese (ja)
Inventor
Tatsuo Watanabe
達夫 渡辺
Nagato Unosaki
永人 鵜崎
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.)
Sintokogio Ltd
Original Assignee
Sintokogio 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 Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP10806195A priority Critical patent/JPH08281495A/en
Publication of JPH08281495A publication Critical patent/JPH08281495A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30Feeding material to presses
    • B30B15/302Feeding material in particulate or plastic state to moulding presses
    • B30B15/308Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses

Abstract

PURPOSE: To provide a practical device which prevents the production from reducing remarkably and which improves the yield of the article in a production of a briquette from a fine powder with small bulk density as the raw material. CONSTITUTION: An upper end opening of a hopper 2 connected to a base end upper part of a screw feeder 1 can be hermetically sealed the inside space of the hopper 2 can be intercepted airtightly into an upper space 25 and a lower space 26 with a slide gate 22, the upper space 25 is allowed to communicate with a vacuum absorbing means 15 as well as with the atmosphere.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、粉体原料を一対の加圧
ローラ間で粒状体(ブリケット)に圧縮成形するいわゆ
るブリケットマシンに関し、特に嵩密度が小さい微粉を
ブリケット化するのに好適な装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called briquette machine for compressing and molding a powder raw material into a granular material (briquette) between a pair of pressure rollers, and is particularly suitable for briquetting fine powder having a low bulk density. Regarding the device.

【0002】[0002]

【従来の技術】一般に硫酸ナトリウム(Na2SO4)、軽焼
マグネシヤ(MgO)等の微粉をブリケットマシンによって
ブリケット化しようとすると、微粉中に多量の空気が含
まれているため加圧ローラへの噛み込みが悪く、生産量
が極端に少なくなると共に、適度な造粒強度が得られず
崩壊するものが多くなり、製品の歩留まりが悪いという
問題がある。従来、このような問題を解決するため、例
えば特開昭64−44300号公報に示されているよう
な微粉造粒装置が提案されている。この装置は、先端部
がテーパトラフに形成されていると共に中間胴部が通気
性を有する円筒トラフに形成されたスクリューフィーダ
と、該スクリューフィーダの先端部に接続して設けられ
た一対の加圧ローラとから成り、上記円筒トラフの外側
に真空ポンプに連通接続した環状室を設けた構成になっ
ている。そして空気を多く含んだ微粉をスクリューフィ
ーダを介して加圧ローラに供給する際、該フィーダの中
間胴部で真空ポンプにより微粉中の空気を吸引除去する
ようにしている。
2. Description of the Related Art Generally, when a briquette machine is used to briquette fine powder such as sodium sulfate (Na 2 SO 4 ) and light burned magnesia (MgO), a large amount of air is contained in the fine powder, so that it is transferred to a pressure roller. However, there is a problem in that the production amount is extremely small, the appropriate granulation strength cannot be obtained, and a large number of products are disintegrated, resulting in poor product yield. Conventionally, in order to solve such a problem, for example, a fine powder granulating apparatus as disclosed in JP-A-64-44300 has been proposed. This device includes a screw feeder having a tapered trough at the tip and a breathable cylindrical trough at the middle body, and a pair of pressure rollers provided connected to the tip of the screw feeder. And an annular chamber communicating with a vacuum pump is provided outside the cylindrical trough. When the fine powder containing a large amount of air is supplied to the pressure roller via the screw feeder, the air in the fine powder is sucked and removed by the vacuum pump in the intermediate barrel portion of the feeder.

【0003】[0003]

【発明が解決しようとする問題点】しかし上記装置は、
微粉により中間胴部の通気孔が目詰りを起すため、実用
に適さないという問題がある。本発明はこのような事情
に鑑みてなされたものであり、内部に多量の空気を含ん
でいる微粉からブリケットを生産するに当り、生産量の
極端な減少を防ぎ、かつ製品の歩留まりを向上させるこ
とができる実用的なブリケットマシンを提供することを
目的としている。
However, the above-mentioned device has the following problems.
Since the fine powder causes clogging of the vent holes of the intermediate body portion, there is a problem that it is not suitable for practical use. The present invention has been made in view of such circumstances, and in producing a briquette from fine powder containing a large amount of air inside, it prevents an extreme decrease in the production amount and improves the yield of products. The purpose is to provide a practical briquette machine that can.

【0004】[0004]

【問題点を解決するための手段】本発明は上記の目的を
達成するため、原料微粉を加圧ローラによりブリケット
化する前に脱気および予備圧縮することを要旨としてい
る。すなわち本発明は、先端部をテーパトラフに形成す
ると共に基端上部にホッパを連結したスクリューフィー
ダと、該スクリューフィーダの先端部に接続して設けら
れた一対の加圧ローラとから成るでブリケットマシンで
あって、上記ホッパの上端開口が密閉可能にされてお
り、上記ホッパの内空がスライドゲートによって上部空
間と底部空間とに気密に遮断可能にされており、上記ホ
ッパの上部空間が真空吸引手段と連通接続していると共
に大気と連通可能にされていることを特徴としている。
SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the gist of the present invention is to deaerate and pre-compress raw material fine powder before briquetting it with a pressure roller. That is, the present invention comprises a screw feeder having a tapered trough at the tip and a hopper connected to the upper end of the base, and a pair of pressure rollers connected to the tip of the screw feeder. The upper opening of the hopper can be hermetically closed, and the inner space of the hopper can be hermetically shut off from the upper space and the lower space by a slide gate, and the upper space of the hopper is vacuum suction means. It is characterized by being connected to and communicating with the atmosphere.

【0005】[0005]

【構成】以下、本発明を実施例に基づいて詳細に説明す
る。図1は本発明に係るブリケットマシンの縦断正面図
である。図において、1はスクリューフィーダであり、
該スクリューフィーダ1の基端上部にはホッパ2が連結
され、またその先端部はテーパトラフ3に形成されてい
る。該テーパトラフ3に接続して、上下に対を成すと共
に回転表面に互いに対応するポケット(図示せず)を形
成した加圧ローラ4,4が配設されている。該ローラ
4,4は互いに加圧し、かつ互いに矢印A方向へ回転す
るようにされており、ホッパ2を介してスクリューフィ
ーダ1へ投入され、スクリュー5によって移送され、テ
ーパトラフ3を介して供給される原料微粉をブリケット
化するようにされている。
DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below based on examples. FIG. 1 is a vertical sectional front view of a briquette machine according to the present invention. In the figure, 1 is a screw feeder,
A hopper 2 is connected to an upper portion of the base end of the screw feeder 1, and a tip end portion thereof is formed into a taper trough 3. Connected to the taper trough 3, there are disposed pressure rollers 4 and 4 which are vertically paired and have pockets (not shown) corresponding to each other formed on the rotating surface. The rollers 4 and 4 are configured to press each other and to rotate in the direction of arrow A, and are fed into the screw feeder 1 through the hopper 2, transported by the screw 5, and supplied through the taper trough 3. The raw material fine powder is made into a briquette.

【0006】上記ホッパ2の上端開口は、中央に原料投
入口6を備えた蓋部材7によって閉鎖されており、原料
投入口6の下方にはダンパ8がリンク機構9の先端部に
ピン連結されて配設されている。該リンク機構9の基端
部は、ホッパ2の側壁に取付けられた支持台10上に設
置されたシリンダ11のピストンロッド12先端部にピ
ン連結されており、該ピストンロッド12が伸長する
と、リンク機構9がB点を支点として反時計方向に回動
し、ダンパ8が原料投入口6を気密に閉鎖するようにさ
れている。上記ホッパ2の上部側壁には排気口13が設
けられている。該排気口13は管路14を介して真空ポ
ンプ、排気ブロア等の真空吸引手段15と連通接続して
おり、管路14の途中には圧力計16と排気バルブ17
が設けられている。上記蓋部材7の外寄り位置には給気
口18が設けられている。該給気口18は管路19を介
して大気に開放可能にされており、該管路19の途中に
は給気バルブ21が設けられている。22は上記ホッパ
2の下部側壁外方から内部へ水平挿入可能にされたスラ
イドゲートであり、該スライドゲート22の外縁部はシ
リンダ23のピストンロッド24先端部に連結されてい
いる。そして該ピストンロッド24が伸長すると、スラ
イドゲート22が上記ホッパ2の内空を上部空間25と
底部空間26とに気密に遮断するようにされている。
The upper end opening of the hopper 2 is closed by a lid member 7 having a raw material input port 6 in the center, and a damper 8 is pin-connected to the tip of a link mechanism 9 below the raw material input port 6. Are arranged. A base end portion of the link mechanism 9 is pin-connected to a tip end portion of a piston rod 12 of a cylinder 11 installed on a support base 10 attached to a side wall of the hopper 2, and when the piston rod 12 extends, a link is formed. The mechanism 9 rotates counterclockwise around the point B as a fulcrum, and the damper 8 closes the raw material inlet 6 airtightly. An exhaust port 13 is provided on the upper side wall of the hopper 2. The exhaust port 13 is connected to a vacuum suction means 15 such as a vacuum pump or an exhaust blower via a pipe line 14, and a pressure gauge 16 and an exhaust valve 17 are provided in the middle of the pipe line 14.
Is provided. An air supply port 18 is provided at a position on the outer side of the lid member 7. The air supply port 18 is openable to the atmosphere via a pipe line 19, and an air supply valve 21 is provided in the middle of the pipe line 19. Reference numeral 22 denotes a slide gate that can be horizontally inserted from the outside of the lower side wall of the hopper 2 into the inside thereof, and the outer edge portion of the slide gate 22 is connected to the tip end portion of the piston rod 24 of the cylinder 23. When the piston rod 24 extends, the slide gate 22 hermetically blocks the inner space of the hopper 2 into the upper space 25 and the bottom space 26.

【0007】[0007]

【作用】上記のように構成された微粉用ブリケットマシ
ンにおいて、スクリューフィーダ1のスクリュー5を矢
印C方向に回転駆動させた状態で、スライドゲート22
によりホッパ2の内空を上部空間25と底部空間26と
に気密に遮断した上、原料投入口6より原料微粉をホッ
パ2内へDレベルに達するまで投入する。次にダンパ8
により原料投入口6を密閉すると共に、真空吸引手段1
5を作動させてホッパ2の上部空間25内の空気を吸引
する。これにより、原料微粉中に含まれている空気も吸
引除去される。ホッパ2の上部空間25内が所定値まで
減圧されると、排気バルブ17を閉じ、給気バルブ21
を開いて給気口18を大気に開放する。これにより、大
気がホッパ2の上部空間25内へ急速に流入して原料微
粉をEレベルまで圧縮する。しかる後、スライドゲート
22を開いて、脱気・圧縮された微粉をホッパ2底部へ
落下させると、該微粉はスクリュー5に案内されてスク
リューフィーダ1の先端方向へ移送される。以上の諸工
程を数回繰返すことによりスクリューフィーダ1内を原
料微粉で充満させた後、加圧ローラ4,4を回転駆動さ
せてスクリューフィーダ1から供給される該微粉をブリ
ケットに圧縮成形する。
In the briquette machine for fine powder constructed as described above, the slide gate 22 is rotated with the screw 5 of the screw feeder 1 being driven to rotate in the direction of arrow C.
Thus, the inner space of the hopper 2 is airtightly closed to the upper space 25 and the bottom space 26, and the raw material fine powder is fed into the hopper 2 through the raw material feeding port 6 until the D level is reached. Next, damper 8
The raw material inlet 6 is closed by the vacuum suction means 1
5 is operated to suck the air in the upper space 25 of the hopper 2. As a result, the air contained in the raw material fine powder is also removed by suction. When the pressure in the upper space 25 of the hopper 2 is reduced to a predetermined value, the exhaust valve 17 is closed and the air supply valve 21 is closed.
To open the air supply port 18 to the atmosphere. As a result, the atmosphere rapidly flows into the upper space 25 of the hopper 2 and compresses the raw material fine powder to the E level. Then, when the slide gate 22 is opened and the deaerated / compressed fine powder is dropped to the bottom of the hopper 2, the fine powder is guided by the screw 5 and transferred toward the tip of the screw feeder 1. After the above steps are repeated several times to fill the inside of the screw feeder 1 with the raw material fine powder, the pressure rollers 4 and 4 are rotationally driven to compression-mold the fine powder supplied from the screw feeder 1 into a briquette.

【0008】[0008]

【実験例】[Experimental example]

・使用ブリケツトマシンの仕様 加圧ローラの直径×幅:715mm×225mm 加圧ローラの加圧力:270トン 加圧ローラの回転数:15.4〜20.0rpm 加圧ローラのモータ:55kw×4p スクリューのモータ:7.5kw×4p ホッパの容積:570リットル(直径700mm×高さ約1500mm) 排気バルブ、給気バルブの各口径:100mm ・原料微粉:軽焼マグネシヤ(MgO) 粒度:1190μm以上(3.4%)、1190〜105μm(90.5%)、105
μmmm以下(6.1%) 嵩密度:0.8g/cm3 真比重:3.58 原料水分:0.1%以下 ・実験方法および結果 原料(投入量7,667kg/hr.)をホッパ2の上部空間25内
へ投入後、-700mmHgまで減圧した。その後排気バルブ1
7を閉じ、給気バルブ21を開き、0.4sec.で大気圧と
なるように大気を導入して原料を脱気・圧縮した。その
後、該原料を加圧ローラ4,4に供給した。このように
して得た物を10mm目の篩にかけ、篩上に残ったものを製
品とした。その結果、3,080Kg/Hr.(歩留まり40%)の製品
を得た。
・ Specifications of used briquetting machine Diameter of pressure roller x width: 715 mm x 225 mm Pressure of pressure roller: 270 tons Rotation speed of pressure roller: 15.4 to 20.0 rpm Pressure roller motor: 55 kw x 4 p Screw motor: 7.5kw x 4p Hopper volume: 570 liters (diameter 700 mm x height about 1500 mm) Exhaust valve and air supply valve diameters: 100 mm-Fine raw material powder: Light burned magnesium (MgO) Particle size: 1190 μm or more (3.4%), 1190 ~ 105 μm (90.5%), 105
μmmm or less (6.1%) Bulk density: 0.8g / cm 3 True specific gravity: 3.58 Raw material water content: 0.1% or less ・ Experimental method and results After feeding the raw material (input amount 7,667kg / hr.) into the upper space 25 of the hopper 2. The pressure was reduced to -700 mmHg. Then exhaust valve 1
7 was closed, the air supply valve 21 was opened, and the atmosphere was introduced so as to reach the atmospheric pressure in 0.4 sec. To degas and compress the raw material. Then, the raw material was supplied to the pressure rollers 4 and 4. The product thus obtained was passed through a 10 mm sieve and the product remaining on the sieve was used as a product. As a result, a product of 3,080 Kg / Hr. (Yield 40%) was obtained.

【0009】[0009]

【比較例】実験例と同じ装置を使用し(但し、減圧、大
気の導入はせず)、同じ原料(但し投入量5,769Kg/Hr.)を
ブリケット化した。このようにして得た物を10mm目の篩
にかけ、篩上に残ったものを製品とした。その結果、1,
500Kg/Hr.(歩留まり26%)の製品を得た。
[Comparative Example] The same apparatus as in the experimental example was used (however, depressurization and atmospheric air were not introduced), and the same raw material (however, the input amount was 5,769 Kg / Hr.) Was briquetted. The product thus obtained was passed through a 10 mm sieve and the product remaining on the sieve was used as a product. As a result, 1,
A product of 500 Kg / Hr. (Yield 26%) was obtained.

【0011】[0011]

【発明の効果】上記の説明から明らかなように、本発明
は嵩密度が小さい微粉をブリケット化するにあたって、
あらかじめこれらを脱気、圧縮するため、ブリケッティ
ング時の加圧ローラへの噛み込みが十分になされる。従
って時間当りの生産量が極端に減少することがないと共
に、製品の歩留まりが向上する。また本発明装置は微粉
の脱気の際、目詰りを起す恐れのない構成になってお
り、実用に適する。
As is apparent from the above description, the present invention provides briquette of fine powder having a low bulk density.
Since these are deaerated and compressed in advance, they are sufficiently bitten into the pressure roller during briquetting. Therefore, the production amount per hour is not extremely reduced, and the product yield is improved. Further, the device of the present invention is suitable for practical use because it has a structure that does not cause clogging during deaeration of fine powder.

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

【図1】図1は本発明に係るブリケットマシンの縦断正
面図である。
FIG. 1 is a vertical sectional front view of a briquette machine according to the present invention.

【符号の説明】[Explanation of symbols]

1 スクリューフィーダ 2 ホッパ 3 テーパトラフ 4,4 加圧ローラ 15 真空吸引手段 22 スライドゲート 25 上部空間 26 下部空間 1 Screw Feeder 2 Hopper 3 Tapered Trough 4, 4 Pressure Roller 15 Vacuum Suction Means 22 Slide Gate 25 Upper Space 26 Lower Space

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 先端部をテーパトラフ3に形成すると共
に基端上部にホッパ2を連結したスクリューフィーダ1
と、該スクリューフィーダ1の先端部に接続して設けら
れた一対の加圧ローラ4,4とから成るブリケットマシ
ンであって、 上記ホッパ2の上端開口が密閉可能にされており、 上記ホッパ2の内空がスライドゲート22によって上部
空間25と底部空間26とに気密に遮断可能にされてお
り、 上記ホッパ2の上部空間25が真空吸引手段15と連通
接続していると共に大気と連通可能にされていることを
特徴とする微粉用ブリケットマシン。
1. A screw feeder 1 having a taper trough 3 formed at its front end and a hopper 2 connected to an upper portion of a base end thereof.
And a pair of pressure rollers 4 and 4 connected to the tip of the screw feeder 1, the upper end opening of the hopper 2 being capable of being sealed, and the hopper 2 The inner space of the hopper 2 can be airtightly shut off from the upper space 25 and the bottom space 26 by the slide gate 22, and the upper space 25 of the hopper 2 is connected to the vacuum suction means 15 and to the atmosphere. A briquette machine for fine powder characterized by being
JP10806195A 1995-04-07 1995-04-07 Fine powder briquetting machine Pending JPH08281495A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10806195A JPH08281495A (en) 1995-04-07 1995-04-07 Fine powder briquetting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10806195A JPH08281495A (en) 1995-04-07 1995-04-07 Fine powder briquetting machine

Publications (1)

Publication Number Publication Date
JPH08281495A true JPH08281495A (en) 1996-10-29

Family

ID=14474915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10806195A Pending JPH08281495A (en) 1995-04-07 1995-04-07 Fine powder briquetting machine

Country Status (1)

Country Link
JP (1) JPH08281495A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011088032A (en) * 2009-10-20 2011-05-06 Furukawa Industrial Machinery Systems Co Ltd Apparatus for granulating powder
WO2011067063A1 (en) * 2009-12-01 2011-06-09 Alexanderwerk Ag Device and method for compacting small amounts of powder material
CN102689453A (en) * 2012-06-14 2012-09-26 徐州万国生物能源科技有限公司 Biomass briquetting set device
CN104190322A (en) * 2014-08-29 2014-12-10 无锡市华牧机械有限公司 Air suction power-assisted granulator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011088032A (en) * 2009-10-20 2011-05-06 Furukawa Industrial Machinery Systems Co Ltd Apparatus for granulating powder
WO2011067063A1 (en) * 2009-12-01 2011-06-09 Alexanderwerk Ag Device and method for compacting small amounts of powder material
CN102689453A (en) * 2012-06-14 2012-09-26 徐州万国生物能源科技有限公司 Biomass briquetting set device
CN104190322A (en) * 2014-08-29 2014-12-10 无锡市华牧机械有限公司 Air suction power-assisted granulator

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