JPH02310216A - Highly sealable rotary feeder - Google Patents
Highly sealable rotary feederInfo
- Publication number
- JPH02310216A JPH02310216A JP13335189A JP13335189A JPH02310216A JP H02310216 A JPH02310216 A JP H02310216A JP 13335189 A JP13335189 A JP 13335189A JP 13335189 A JP13335189 A JP 13335189A JP H02310216 A JPH02310216 A JP H02310216A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- rotor
- sliding contact
- side plate
- annular groove
- 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
- 238000007789 sealing Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000008187 granular material Substances 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 241000257465 Echinoidea Species 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、粉粒体の低速高密度空気輸送装置に使用さ
れる高シール性ロータリーフィーダーに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a high-sealing rotary feeder used in a low-speed, high-density pneumatic transport device for powder and granular materials.
従来の技術
従来、粉粒体の空気輸送装置には各種形式のものがあり
、その中で低圧の圧送式空気輸送装置として、混入機に
ロータリーフィーダーを使用したものがある。2. Description of the Related Art Conventionally, there are various types of pneumatic transportation devices for powder and granular materials, and among these, there is a low-pressure pressure-feeding pneumatic transportation device that uses a rotary feeder as a mixing machine.
ロータリーフィーダーは、ケーシングと羽根車との間に
若干のすきま（通常０．１ｎｕｒ＋程度）が必要であり
、使用圧力は０．６ｋｉＪ以下とされていた。A rotary feeder requires a slight clearance (usually about 0.1 nur+) between the casing and the impeller, and the operating pressure is 0.6 kiJ or less.
したがって、空気輸送としては低圧用の混入機でおる。Therefore, for pneumatic transportation, a low-pressure mixing machine is used.
しかし、構造、作用が簡単で、しかも粉粒体輸送用混入
機として十分な条件を備えているため、最も多く使われ
ている。However, it is the most commonly used because it has a simple structure and operation, and has sufficient conditions as a mixing machine for transporting powder and granular materials.
そこで、本発明者は、より高圧空気を用いた粉粒体の空
気輸送を実現するため、ロータリーフィーダーの改良に
ついて種々検討した。その結果、ロータリーフィーダー
において、ローターの回転軸を偏心自在とすることによ
り、上開口または下開口付近のケーシング内周面に当接
可能とし、上下開口の圧力差によりローターが押し動か
され、ケーシング内周面に固接し空気の漏れを防止した
高シール性ロータリーフィーダーを開発し、このロータ
リーフィーダーを混入機とした圧送式空気輸送装置によ
り高圧空気の使用を可能としたく特開昭６３−１６０９
２６＠公報）。Therefore, the present inventor conducted various studies on improvements to the rotary feeder in order to realize pneumatic transportation of powder and granular materials using higher pressure air. As a result, in a rotary feeder, by making the rotation axis of the rotor eccentric, it can come into contact with the inner peripheral surface of the casing near the upper or lower opening, and the rotor is pushed and moved by the pressure difference between the upper and lower openings, and inside the casing. Developed a rotary feeder with high sealing properties that is tightly attached to the circumferential surface to prevent air leakage, and made it possible to use high-pressure air with a pressure-feeding air transport device using this rotary feeder as a mixing device. JP-A-63-1609
26@public bulletin).
しかし、上記高シール性ロータリーフィーダーを混入機
とした圧送式空気輸送装置により、赤鉄鉱などの摩耗性
のある粉粒体を空気輸送すると、第３図に示すローター
（１２）の側板（１３）とケーシング（１４）との摺接
面（１５）が摩耗し、ここから空気漏れが生じ高シール
性が維持できなくなる。そして、更に摩耗が進むと第４
図に示すように、正規の摺接面（１５）は消滅し、代り
に羽根（１６）の先端縁（１７）がケーシング（１４）
に接触するようになる。この羽根（通常１２枚羽根が使
用される）の接触は間欠的に行なわれるため、振動や騒
音が発生し、またケーシング内面を損傷するなど機械的
な問題を引き起こす。However, when abrasive powder such as hematite is pneumatically transported by a pressure-feeding pneumatic transport device using the above-mentioned high-sealing rotary feeder as a mixing machine, the side plate (13) of the rotor (12) shown in FIG. The sliding contact surface (15) between the housing and the casing (14) wears out, and air leaks from there, making it impossible to maintain high sealing performance. When the wear progresses further, the fourth
As shown in the figure, the normal sliding surface (15) disappears and the tip edge (17) of the vane (16) is replaced by the casing (14).
come into contact with. Since the blades (usually 12 blades are used) are intermittently in contact, vibration and noise are generated, and mechanical problems such as damage to the inner surface of the casing are caused.
発明が解決しようとする課題
上記のごとく、高シール性ロータリーフィーダーを混入
機とした空気輸送装置により摩耗性の粉粒体を空気輸送
すれば、ロータリーフィーダーのローター側板とケーシ
ングとの摺接面が摩耗し、空気漏れが起り高圧空気を用
いた空気輸送に支障を来たしていた。Problems to be Solved by the Invention As mentioned above, if abrasive powder is pneumatically transported using a pneumatic transporting device using a high-sealing rotary feeder as a mixing machine, the sliding surface between the rotor side plate of the rotary feeder and the casing will be Due to wear and tear, air leakage occurred, causing problems in pneumatic transportation using high-pressure air.
この発明は、かかるｌ習接面の摩耗を排除しローター側
板とケーシングとの摺接面の高シール性を維持し空気漏
れを防止したロータリーフィーダーに関する。The present invention relates to a rotary feeder that eliminates such abrasion of the contact surface, maintains high sealing performance of the sliding contact surface between the rotor side plate and the casing, and prevents air leakage.
課題を解決するための手段
上記目的を達成するため、この発明の高シール性ロータ
リーフィーダーは、上下開口の圧力差によりローターが
低圧側に押動しケーシング内周面との間（摺動面を形成
して回転する高シール性ロータリーフィーダーにおいて
、ローター側板とケーシングとの間に形成される摺接面
のローター側板摺接部分の中央に円環溝を設けて間接部
分を円周方向に２分割し、かつ円環溝とケーシング内空
間とを透孔を介して連通してなる。Means for Solving the Problems In order to achieve the above object, the high sealing rotary feeder of the present invention has a rotor that is pushed toward the low pressure side due to the pressure difference between the upper and lower openings, and the gap between the rotor and the inner circumferential surface of the casing (sliding surface) is In a high-sealing rotary feeder that forms and rotates, an annular groove is provided in the center of the sliding contact portion of the rotor side plate of the sliding contact surface formed between the rotor side plate and the casing, and the joint portion is divided into two in the circumferential direction. The annular groove and the casing inner space are communicated through a through hole.
作 用
上記のごとく、ローター側板摺接部分の中央に円環溝を
設け、かつこの円環溝にケーシング内空間より空気が流
通するように構成されているから、第２図に示すように
ローター側板（２−３）の１Δ接部（５）には円環溝（
５−３）を挟んで外側に軸受部（５−１）と内側にシー
ル部（５−２）が形成される。Function As mentioned above, an annular groove is provided in the center of the sliding contact portion of the rotor side plate, and the structure is such that air flows from the inner space of the casing to this annular groove. The side plate (2-3) has an annular groove (
A bearing part (5-1) is formed on the outer side and a seal part (5-2) is formed on the inner side of the bearing part (5-3).
そして、ローターポケットが上開口（１−１）に対向し
て大気開放となると、その際の圧力関係は、ケーシング
内空間圧力ａ＝円環溝圧力ｂ〉ローターポケット圧力Ｃ
となる。When the rotor pocket faces the upper opening (1-1) and is opened to the atmosphere, the pressure relationship at that time is as follows: casing internal space pressure a=annular groove pressure b>rotor pocket pressure C.
したがって、ローターポケットが大気開放されている間
は、シール部（５−２）のｌｘ接面を介して円環溝内の
空気がローターポケットへ流れ、いわゆる空気漏れが起
る。そのため、シール部（５−２）には摺動摩耗ととも
に気流摩耗が発生する。しかし、ケーシング内空間と円
環溝との圧力は等しいため、軸受部（５−１）には気流
摩耗は発生せず摺動摩耗だけが発生する。Therefore, while the rotor pocket is open to the atmosphere, air in the annular groove flows into the rotor pocket via the lx contact surface of the seal portion (5-2), causing so-called air leakage. Therefore, airflow abrasion occurs in the seal portion (5-2) as well as sliding abrasion. However, since the pressures in the casing inner space and the annular groove are equal, air flow wear does not occur in the bearing portion (5-1), but only sliding wear occurs.
上記気流摩耗と１習勅摩耗の進行速度を比較すると気流
摩耗の方が速い。したがって、シール部（５−２）が摩
耗しても軸受部（５−１）の摩耗が遅いため、長期にわ
たり軸受部（５−１）の摺動により正常運転を維持する
ことができる。そのため、摩耗性のある粉粒体でも高圧
空気を使って空気輸送することができる。Comparing the speed of progress between the above-mentioned airflow wear and 1-year wear, airflow wear is faster. Therefore, even if the seal part (5-2) wears out, the bearing part (5-1) wears slowly, so that normal operation can be maintained over a long period of time by sliding the bearing part (5-1). Therefore, even abrasive powder and granular materials can be pneumatically transported using high-pressure air.
実施例 この発明の実施例を第１図、第２図に基いて説明する。Example An embodiment of this invention will be explained based on FIGS. 1 and 2.
ケーシング（１）の片方のサイドカバー（３−１）に設
けた円筒コロ軸受（９）と軸受ユニット（１０）に軸支
してサイドカバー（３−１）を貫通した駆動軸（４）の
先端に設けたセンターピンと、他方のサイドカバー（３
−２）に貫設したボルト（１１）にてローター（２）を
回転自在に支持し、ローター（２）の左右ローター側板
（２−３） （２−３）の外周面に、ケーシング（１）
の内周面に当接する摺接部（５）を形成する。The drive shaft (4) is supported by a cylindrical roller bearing (9) provided on one side cover (3-1) of the casing (1) and a bearing unit (10) and passes through the side cover (3-1). The center pin provided at the tip and the other side cover (3
The rotor (2) is rotatably supported by bolts (11) penetrated through the rotor (2), and the casing (1) is attached to the outer peripheral surface of the left and right rotor side plates (2-3) (2-3) )
A sliding contact portion (5) that comes into contact with the inner circumferential surface of is formed.
そして、駆動軸（４）の先端面と、これに対向するロー
ター軸（２−１）の端面に、それぞれ円板状の固定フラ
ンジ（６−１）（６−３）を取着する。さらに、両側の
固定フランジ（６−１）（６−３）の間に、ウレタンゴ
ムなどの弾性体からなる中間フランジ（６−２）を介在
し、駆動軸（４）の固定フランジ（６−１）に複数のボ
ルトをもって接合する。Then, disk-shaped fixing flanges (6-1) and (6-3) are attached to the distal end surface of the drive shaft (4) and the end surface of the rotor shaft (2-1) facing thereto, respectively. Further, an intermediate flange (6-2) made of an elastic material such as urethane rubber is interposed between the fixed flanges (6-1) and (6-3) on both sides, and the fixed flange (6-2) of the drive shaft (4) 1) Connect with multiple bolts.
この中間フランジ（６−２）には、例えば８個のピン（
７８８）を等間隔で円周配設し、一つあきのピン（７）
は駆動軸（４）の固定フランジ（６−１）に設けたピン
孔にピン頭（７−１）を嵌合し、他方の一つおきのピン
（８）はローター軸（２−１）の固定フランジ（６−３
）に設けたピン孔にピン頭（８−１）を嵌合し、いずれ
のピン（７Ｘ８）もピン頭（７−１） （８−１）と反
対側のピン端部は、固定フランジ（６−１） （６−３
）に対し拘束されないように大径の孔に遊嵌するか、ま
たは中間フランジ（６−２）から突出しないようにする
。This intermediate flange (6-2) has, for example, eight pins (
788) are arranged at equal intervals around the circumference, with one pin (7)
The pin head (7-1) is fitted into the pin hole provided in the fixed flange (6-1) of the drive shaft (4), and the other every other pin (8) is inserted into the rotor shaft (2-1). Fixed flange (6-3
) Fit the pin head (8-1) into the pin hole provided in the pin hole (7 6-1) (6-3
), so as not to be constrained by the large diameter hole, or to prevent it from protruding from the intermediate flange (6-2).
ケーシング（１）の内周面に接触するローター側板（２
−３）の摺接部（５）は第２図に示すように構成する。The rotor side plate (2) contacts the inner peripheral surface of the casing (1).
-3) The sliding contact portion (5) is constructed as shown in FIG.
すなわち、ローター側板（２−３）の外周部を外側に突
出させ、その外周面中央に円周方向の円環溝（５−３）
を設け、複数の透孔（５−４）にて円環溝（５−３）を
ケーシング内空間に連通させる。このにうに（合接部（
５）を円環溝（５−３）で２分割して軸受部（５−１）
とシール部（５−２）を形成する。That is, the outer peripheral part of the rotor side plate (2-3) is made to protrude outward, and a circular groove (5-3) in the circumferential direction is formed in the center of the outer peripheral surface.
is provided, and the annular groove (5-3) is communicated with the casing inner space through a plurality of through holes (5-4). This sea urchin (joint part (
5) is divided into two by the annular groove (5-3) and the bearing part (5-1) is formed.
and a seal portion (5-2) is formed.
上記ロータリーフィーダーにおいて、図示しないロータ
ーにより駆動軸（４）を駆動すれば、ローター（２）は
固定フランジ（６−１） 、ピン（７］（８）を支持し
た中間フランジ（６−２）および固定フランジ（６−３
）を介して偏心回転をする。この偏心回転によりロータ
ー（２）は、高圧空気輸送系側に接続された下開口（１
−２）側の高圧空気に押し上げられて、原わ１供給系に
接続され大気圧の上開口（１−１）側のケーシング内周
面に当接し、摺接部（５）が形成される。In the rotary feeder described above, when the drive shaft (4) is driven by a rotor (not shown), the rotor (2) has a fixed flange (6-1), an intermediate flange (6-2) supporting the pins (7) and (8), and Fixed flange (6-3
) to perform eccentric rotation. This eccentric rotation causes the rotor (2) to rotate through the lower opening (1) connected to the high-pressure air transport system.
It is pushed up by the high pressure air on the -2) side, is connected to the raw material 1 supply system, and comes into contact with the inner peripheral surface of the casing on the atmospheric pressure upper opening (1-1) side, forming a sliding contact part (5). .
この摺接部（５）は上記のごとく軸受部（５−１）とシ
ール部（５−２）がらなり、ローターポケットが上開口
（ｉ−ｉ）に対向して大気開放されている間、シール部
（５−２）に摺動摩耗とともに気流摩耗が発生し、空気
漏れが生じても、軸受部（５−１）は摺動摩耗だけが起
り、シール部（５−２）に比べ摩耗速度か遅い。As mentioned above, this sliding contact part (5) consists of the bearing part (5-1) and the seal part (5-2), and while the rotor pocket faces the upper opening (ii) and is open to the atmosphere, Even if air flow wear occurs in the seal part (5-2) as well as sliding wear, and air leakage occurs, the bearing part (5-1) only suffers sliding wear and wear is lower than that of the seal part (5-2). speed or slow.
したがって、ローター（２）は長期にわたり高シール性
を維持して運転することができる。Therefore, the rotor (2) can be operated for a long period of time while maintaining high sealing performance.
なお、上記はピンを有する中間フランジを挟んで、両側
に固定フランジを対設した装置にてローターを偏心回転
させる構成のフィーダーに、この発明を適用した場合に
ついて説明したが、この構成に限ることなく、他の機構
によりローターを偏心回転させるフィーダーにも適用で
きる。In addition, although the above description describes a case in which the present invention is applied to a feeder configured to eccentrically rotate a rotor using a device in which fixed flanges are provided on both sides of an intermediate flange having a pin, the present invention is not limited to this configuration. It can also be applied to feeders whose rotors are rotated eccentrically by other mechanisms.
発明の効果
高シール性ロータリーフィーダーのローター側板摺接部
を軸受部とシール部から形成し、軸受部に気流摩耗が発
生しない構造とすることにより、ローター側板とケーシ
ング内周面との摺接部を長期にわたり高気密に保持して
運転することができる。また、摩耗性のある粉粒体の空
気輸送においても、その粉粒体による軸受部の摩耗が避
けられるため、この種の粉粒体空気輸送において優れた
効果を発揮できる。Effects of the Invention By forming the sliding contact portion of the rotor side plate of the rotary feeder with high sealability from the bearing portion and the seal portion, and creating a structure that prevents air flow wear from occurring on the bearing portion, the sliding contact portion between the rotor side plate and the inner circumferential surface of the casing is improved. can be operated in a highly airtight manner for a long period of time. Further, even in pneumatic transportation of abrasive powder and granular materials, wear of the bearing portion due to the powder and granular materials can be avoided, so that excellent effects can be exhibited in this type of pneumatic transportation of powder and granular materials.
第１図はこの発明の一実施例におけるロータリーフィー
ダーの縦断面図、第２図は同上のローター側板とケーシ
ング内周面との摺接部の詳細を示す拡大断面図、第３図
は従来のロータリーフィーダーのローター側板とケーシ
ング内周面との摺接部部分を示す説明図、第４図は第３
図において摺接部の摩耗状況を示す説明図である。
１・・・ケーシング
１−１・・・上開口 １−２・・・下開口
２・・・ローター
２−１・・・ローター軸 ２−２・・・羽根２−
３・・・ローター側板
３−１．３−２・・・サイドカバー
４・・・駆動軸
５・・・摺接部
５−１・・・軸受部 ５−２・・・シール部
５−３・・・円環溝 ５−４・・・透孔６−
１．６−３・・・固定フランジ ６−２・・・中間フラ
ンジ７．８・・・ピン
７−１．８−１・・・ピン頭
９・・・円筒コロ軸受 １０・・・軸受ユニッ
ト圧力ａ・・・ケーシング内空間圧力
圧力ｂ・・・円環溝圧力
圧力Ｃ・・・ローターポケット圧力
出願人 三興空気装置株式会社
代理人 弁理士 押田良久 、。
・ Ｉｉｊノ１
第１図
第２図
第３図
第４図FIG. 1 is a longitudinal cross-sectional view of a rotary feeder according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view showing details of the sliding contact between the rotor side plate and the inner circumferential surface of the casing, and FIG. An explanatory diagram showing the sliding contact portion between the rotor side plate of the rotary feeder and the inner circumferential surface of the casing.
It is an explanatory view showing the wear condition of a sliding contact part in a figure. 1...Casing 1-1...Upper opening 1-2...Lower opening 2...Rotor 2-1...Rotor shaft 2-2...Blade 2-
3...Rotor side plate 3-1.3-2...Side cover 4...Drive shaft 5...Sliding contact part 5-1...Bearing part 5-2...Seal part 5-3 ...Annular groove 5-4...Through hole 6-
1.6-3... Fixed flange 6-2... Intermediate flange 7.8... Pin 7-1.8-1... Pin head 9... Cylindrical roller bearing 10... Bearing unit Pressure a: Casing internal space pressure Pressure b: Annular groove pressure Pressure C: Rotor pocket pressure Applicant: Sanko Air Equipment Co., Ltd. Agent: Yoshihisa Oshida, patent attorney.・Iij No. 1 Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
ケーシング内周面との間に摺接面を形成して回転する高
シール性ロータリーフィーダーにおいて、ローター側板
とケーシングとの間に形成される摺接面のローター側板
摺接部分の中央に円環溝を設けて摺接部分を円周方向に
２分割し、かつ円環溝とケーシング内空間とを透孔を介
して連通したことを特徴とする高シール性ロータリーフ
ィーダー。1. In a high-sealing rotary feeder in which the rotor is pushed toward the low-pressure side due to the pressure difference between the upper and lower openings and rotates with a sliding surface formed between it and the inner peripheral surface of the casing, the rotor is formed between the rotor side plate and the casing. A feature is that an annular groove is provided in the center of the sliding contact portion of the rotor side plate of the sliding contact surface to divide the sliding contact portion into two in the circumferential direction, and the annular groove and the casing inner space are communicated through a through hole. High sealing rotary feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1133351A JPH0829839B2 (en) | 1989-05-25 | 1989-05-25 | High-sealing rotary feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1133351A JPH0829839B2 (en) | 1989-05-25 | 1989-05-25 | High-sealing rotary feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02310216A true JPH02310216A (en) | 1990-12-26 |
| JPH0829839B2 JPH0829839B2 (en) | 1996-03-27 |
Family
ID=15102693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1133351A Expired - Lifetime JPH0829839B2 (en) | 1989-05-25 | 1989-05-25 | High-sealing rotary feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0829839B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586819U (en) * | 1981-07-01 | 1983-01-17 | 帯広ホンダモ−タ−株式会社 | Soil spreader feeding mechanism |
| JPS61156767U (en) * | 1985-03-20 | 1986-09-29 |
-
1989
- 1989-05-25 JP JP1133351A patent/JPH0829839B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586819U (en) * | 1981-07-01 | 1983-01-17 | 帯広ホンダモ−タ−株式会社 | Soil spreader feeding mechanism |
| JPS61156767U (en) * | 1985-03-20 | 1986-09-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0829839B2 (en) | 1996-03-27 |
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