WO2015022852A1 - 消泡装置 - Google Patents
消泡装置 Download PDFInfo
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- WO2015022852A1 WO2015022852A1 PCT/JP2014/069727 JP2014069727W WO2015022852A1 WO 2015022852 A1 WO2015022852 A1 WO 2015022852A1 JP 2014069727 W JP2014069727 W JP 2014069727W WO 2015022852 A1 WO2015022852 A1 WO 2015022852A1
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- WIPO (PCT)
- Prior art keywords
- tank
- pressure
- defoaming
- bearing
- chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
Definitions
- the present invention relates to a defoaming apparatus, and more particularly, to a defoaming apparatus having a tank in which a foamable liquid is stored and a defoaming unit that defoams the liquid in the tank.
- Patent Document 1 When a sealed type is installed, a seal structure using a stirrer or a mechanical seal as described in Patent Document 1 is known.
- the stirrer described in Patent Document 1 has a configuration in which the motor chamber and the bearing casing are connected by piping in order to control the pressure between the motor chamber in which the motor is disposed and the bearing casing to equal pressure. It has become.
- a mechanical seal used in a sealed type uses a coolant such as water or oil in order to maintain performance.
- a coolant such as water or oil in order to maintain performance.
- the mechanical seal since the mechanical seal is not completely sealed, the coolant leaks into the tank and causes impurities to be mixed into the liquid. Dry mechanical seals are also known.
- peripheral speed, pressure, and temperature When the pressure in the tank to be installed fluctuates due to batch operation or the like, if a foamable substance is present in the tank, the solid component may cause damage to the mechanical seal.
- the present invention has a defoaming section that defoams liquid by rotating in a tank in which foamable liquid is stored, and suppresses the breath-joining phenomenon that occurs when the pressure in the tank fluctuates.
- An object of the present invention is to provide a defoaming device that can be used.
- the defoaming device forms a tank in which foamable liquid is stored, a bearing chamber partitioned from the inside of the tank via a seal portion, and a bearing in the bearing chamber.
- a bearing casing provided with a device, a defoaming portion that is rotatably supported by the bearing device and is inserted into the tank via the seal portion and rotates to defoam the liquid.
- a drive unit that is disposed outside the bearing casing and rotationally drives the defoaming unit via a magnetic coupling, and adjusts the pressure so that the difference between the pressure in the bearing chamber and the pressure in the tank is reduced. And a pressure adjusting unit to perform.
- the pressure adjusting unit balances the pressure in the bearing chamber and the pressure in the tank, it is possible to suppress the breathing phenomenon that occurs when the pressure in the tank fluctuates.
- the pressure adjusting unit may be a tubular communication pipe that connects the tank and the bearing chamber.
- the pressure in the bearing chamber and the pressure in the tank can be balanced through the communication pipe.
- the defoaming device may have a purge gas supply device capable of supplying a purge gas into the bearing chamber via the communication pipe.
- the purge gas is injected to keep the pressure in the bearing chamber at a positive pressure, and when the pressure in the tank becomes negative, the bubble that rapidly increases Intrusion into the bearing chamber can be suppressed.
- the communication pipe may be provided with an isolator having a cylinder and a piston that partitions the cylinder into a first chamber and a second chamber.
- the seal portion may be configured by an oil seal.
- the breathing that occurs when the pressure in the tank fluctuates the breathing that occurs when the pressure in the tank fluctuates.
- the phenomenon can be suppressed.
- the defoaming apparatus of this embodiment has a defoaming part that defoams the foamable liquid stored in the tank, and defoams the liquid in a sealed state in batch operation.
- the defoaming device 1 includes a tank 2 in which a foamable liquid W is stored, and a defoaming unit 3 that is inserted into the tank 2 to defoam the liquid W. Yes.
- the defoaming part 3 has a defoaming blade 4 and a shaft part 5.
- the shaft portion 5 is rotatably supported by a bearing device 8 provided in the bearing chamber 7.
- the bearing chamber 7 is an internal space of the bearing casing 6 provided in the upper part of the tank 2.
- the tank 2 and the bearing casing 6 are hermetically connected.
- the tank 2 and the bearing casing 6 form a sealed space.
- the tank 2 is formed of a material suitable for storing the foamable liquid W.
- the tank 2 has sufficient strength to install the motor 11 and the defoaming unit 3 in the upper part of the tank 2.
- the bearing casing 6 is a cylindrical portion extending above the tank 2. A lower portion of the bearing casing 6 is connected to the tank 2 via a seal portion 12. The inside of the tank 2 and the bearing chamber 7 in the bearing casing 6 are partitioned by a seal portion 12. The upper part of the bearing casing 6 is connected to the motor 11 via a partition wall 17. That is, the bearing casing 6 and the motor 11 form another space by the partition wall 17.
- the output shaft 13 that drives the defoaming section 3 is installed so as to face downward.
- a disk-shaped (disk type) first permanent magnet 14 is connected to the output shaft 13 via a coupling (not shown) or the like.
- the first permanent magnet 14 is disposed so as to form a predetermined interval with the partition wall 17.
- the second permanent magnet 15 having the same shape as the first permanent magnet 14 is disposed inside the bearing chamber 7 and below the partition wall 17.
- the 2nd permanent magnet 15 and the partition 17 are arrange
- the upper end of the shaft part 5 of the defoaming part 3 is connected to the lower surface of the second permanent magnet 15.
- the partition wall 17 is such that the function of the magnetic coupling 16 is not impaired by the first permanent magnet 14 and the second permanent magnet 15 even when the pressure difference between the space of the motor 11 and the bearing chamber 7 becomes large. Has strength.
- the first permanent magnet 14 and the second permanent magnet 15 have a magnetic force capable of transmitting the magnetic force via the partition wall 17.
- neodymium can be adopted as the permanent magnet.
- the shaft portion 5 of the defoaming portion 3 is a shaft-like member that is rotated by the driving force of the motor 11.
- the shaft portion 5 is rotatably supported in the bearing chamber 7 by two bearing devices 8 (radial bearings) arranged at intervals in the vertical direction.
- the bearing device 8 is fixed to the bearing casing 6 by a support member (not shown).
- the upper end of the shaft portion 5 is connected to the second permanent magnet 15.
- the shaft portion 5 extends through the seal portion 12 to the inside of the tank 2.
- a defoaming blade 4 is provided at the lower end of the shaft portion 5.
- Two defoaming blades 4 are attached to the outer peripheral surface of the shaft portion 5.
- the defoaming blade 4 is formed with a flow path having a bubble intake port that takes in bubbles on the liquid W and a bubble discharge port that discharges bubbles.
- the defoaming blade 4 is configured to compress and defoam the foam by gradually narrowing the flow path having the foam intake port and the foam discharge port.
- the seal part 12 has a disc shape, and the shaft part 5 penetrates the center part. That is, the seal portion 12 is a seal device for the shaft portion 5 that transmits the driving force of the motor 11 to the defoaming blade 4.
- the seal portion 12 partitions the bearing casing 6 and the tank 2 that are sealed spaces.
- the seal portion 12 includes a bracket 19 whose outer peripheral surface is connected to the inner peripheral surface of the bearing casing 6, and an O-ring and oil seal 20 that seals between the inner peripheral surface of the bracket 19 and the shaft portion 5. .
- the O-ring and the oil seal 20 are made of fluoro rubber.
- the O-ring and the oil seal 20 are fitted into a groove formed on the inner peripheral surface of the bracket 19 in a ring shape, for example.
- a disc-shaped labyrinth seal 21 is attached on the shaft portion 5 and above the seal portion 12 so as to form a predetermined distance from the bracket 19.
- the tank 2 and the bearing chamber 7 are connected by a tubular communication pipe 23 that functions as a pressure adjusting unit that adjusts the pressure so that the difference between the pressure in the bearing chamber 7 and the pressure in the tank 2 is reduced.
- a tubular communication pipe 23 that functions as a pressure adjusting unit that adjusts the pressure so that the difference between the pressure in the bearing chamber 7 and the pressure in the tank 2 is reduced.
- one end of the communication pipe 23 opens into the tank 2, and the other end of the communication pipe 23 opens inside the bearing chamber 7 between the labyrinth seal 21 and the seal portion 12. is doing.
- an isolator 24 is provided on the communication pipe 23.
- the isolator 24 is a so-called free piston type isolator having a cylinder 25 and a piston 26 that is airtightly partitioned and has a piston 26 that is movable in the longitudinal direction of the cylinder 25.
- An inert gas is preferably sealed in the cylinder 25 of the isolator 24.
- the cylinder 25 of the isolator 24 is partitioned into a first chamber 27 and a second chamber 28 by a piston 26.
- the first chamber 27 communicates with the tank 2 side
- the second chamber 28 communicates with the bearing chamber 7 side.
- the isolator 24 separates the communication pipe 23 communicating with the tank 2 and the communication pipe 23 communicating with the bearing chamber 7 while transmitting pressure.
- An isolator pressure gauge 29 for measuring the pressure in the isolator 24 is provided on the communication pipe 23. Further, a purge gas supply device 30 capable of introducing a purge gas into the communication pipe 23 is connected on the communication pipe 23 between the isolator 24 and the bearing chamber 7.
- a purge gas for example, an inert gas such as N 2 or CO 2 is suitable. The purge gas is supplied into the bearing chamber 7 through the communication pipe 23 by operating the purge gas valve 31.
- the bearing casing 6 is provided with a first pipe 33 that communicates the inside of the bearing chamber 7 with the outside.
- a first opening valve 34 is provided in the first pipe 33, and the gas in the bearing chamber 7 can be released by operating the first opening valve 34.
- the first piping 33 is provided with a bearing chamber pressure gauge 35 for measuring the pressure in the bearing chamber 7.
- the tank 2 is provided with a second pipe 36 that communicates the inside of the tank 2 with the outside.
- a second open valve 37 is provided in the second pipe 36.
- the tank 2 can open the gas in the tank 2 by operating the second opening valve 37.
- the second pipe 36 is provided with a tank pressure gauge 38 for measuring the pressure in the tank 2.
- the defoaming device 1 receives the measured values of the isolator pressure gauge 29, the bearing chamber pressure gauge 35, and the tank pressure gauge 38, the purge gas valve 31, the first opening valve 34, and the second opening.
- a control device (not shown) capable of controlling the opening degree of the valve 37 is provided.
- the control device has a function of adjusting the pressure in the tank 2 and the pressure in the bearing chamber 7 based on the measurement value of each pressure gauge. For example, the pressure in the tank 2 and the pressure in the bearing chamber 7 cannot be balanced only by the action of the communication pipe 23 and the isolator 24, and when the pressure in the tank 2 becomes negative, the control device The purge gas is introduced into the bearing chamber 7 by operating the valve 31. In addition, when the pressure in the bearing chamber 7 or the pressure in the tank 2 increases, the control device operates the first opening valve 34 and the second opening valve 37 to release the gas in a timely manner.
- action of the defoaming apparatus 1 of this embodiment is demonstrated. Since the first permanent magnet 14 and the second permanent magnet 15 constitute a magnetic coupling 16, the defoaming unit 3 is rotated by driving the motor 11. The bubbles on the liquid W are defoamed by the rotation of the defoaming unit 3. Defoaming is performed by batch operation. That is, defoaming is performed while the liquid W stored in the tank 2 is kept sealed.
- the pressure in the tank 2 when the difference between the pressure in the tank 2 and the pressure in the bearing chamber 7 increases, the pressure is adjusted via the communication pipe 23. That is, when the pressure in the tank 2 becomes larger than the pressure in the bearing chamber 7, the gas in the tank 2 moves into the bearing chamber 7 through the communication pipe 23. Due to the movement of the gas in the tank 2, the difference between the pressure in the tank 2 and the pressure in the bearing chamber 7 is reduced, and pressure adjustment is performed. On the other hand, when the pressure in the bearing chamber 7 becomes larger than the pressure in the tank 2, the gas in the bearing chamber 7 moves into the tank 2 through the communication pipe 23, and the pressure in the tank 2 and the pressure in the bearing chamber 7 are increased. The pressure is balanced.
- the communication pipe 23 functioning as a pressure adjusting unit balances the pressure in the bearing chamber 7 and the pressure in the tank 2, and therefore occurs when the pressure in the tank 2 fluctuates.
- the breathing phenomenon can be suppressed. That is, the possibility of sucking bubbles accumulated around the defoaming blade 4 due to the breathing phenomenon can be eliminated. Further, it is possible to eliminate the possibility of sucking mist generated by defoaming due to the breathing phenomenon.
- corrosive gas and dust coexist in the tank 2 in addition to the foaming substance, corrosive gas may be sucked in if there is a breathing phenomenon of the bearing casing 6 during pressure fluctuation during batch operation. According to the above-described embodiment, the breathing phenomenon is suppressed, so that the inhalation of corrosive gas / dust can be prevented.
- the seal portion 12 is constituted by an O-ring and an oil seal 20.
- a mechanical seal there is no possibility that lubricating oil / cooling water used as a coolant or abrasion powder of the mechanical seal is mixed into the tank 2.
- the cost is high, such as periodic replacement or a coolant, but this is not necessary and the cost can be reduced.
- purge gas when the pressure in the tank 2 becomes negative pressure, the intrusion of bubbles into the bearing chamber 7 that increases when the pressure in the tank 2 becomes negative pressure is suppressed. Can do.
- the isolator 24 is provided in the communication pipe 23, mixing of gas components such as odor in the tank 2 and solid components such as dust can be prevented.
- the isolator 24 is provided to prevent gas components such as odor in the tank 2 from being mixed.
- a filter such as a mist separator may be provided. .
- the pressure adjusting unit balances the pressure in the bearing chamber and the pressure in the tank, so that the breathing phenomenon that occurs when the pressure in the tank fluctuates can be suppressed.
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
Description
本願は、2013年8月13日に出願された特願2013-168109号について優先権を主張し、その内容をここに援用する。
特許文献1に記載されている撹拌機は、モータが配置されるモータ室と軸受ケーシングとの間の圧力を均圧に制御するために、モータ室と軸受ケーシングとを配管にて接続した構成となっている。
乾式のメカニカルシールも知られている。しかしながら、周速・圧力・温度など、使用環境に制限がある。
バッチ運転などにより、設置するタンク内の圧力が変動する場合、タンク内に発泡性物質が存在すると、固形成分がメカニカルシールの破損原因となる場合がある。
本実施形態の消泡装置は、タンク内に貯留された発泡性の液体の消泡を行う消泡部を有するものであり、バッチ運転での密封状態の液体の消泡を行うものである。
図1に示すように、消泡装置1は、発泡性の液体Wが貯留されたタンク2と、タンク2内に挿入されて液体Wの消泡を行う消泡部3と、を有している。
消泡部3は、消泡羽根4と軸部5とを有している。軸部5は、軸受室7に設けられた軸受装置8によって回転可能に支持されている。軸受室7は、タンク2の上部に設けられた軸受ケーシング6の内部空間である。
タンク2と軸受ケーシング6とは気密に接続されている。タンク2と軸受ケーシング6は、密閉空間を形成している。
タンク2は、発泡性の液体Wを貯留するのに適した材質によって形成されている。タンク2は、タンク2の上部にモータ11や消泡部3を設置するのに十分な強度を有している。
軸受ケーシング6の上部は、隔壁17を介してモータ11と接続されている。即ち、軸受ケーシング6とモータ11とは、隔壁17によって別の空間を形成している。
消泡羽根4は、軸部5の外周面に二つ取り付けられている。消泡羽根4には、液体W上の泡を取り込む泡取込口と、泡を排出する泡排出口を有する流路が形成されている。消泡羽根4は、泡取込口と泡排出口を有する流路を漸次狭くすることによって、泡を圧縮して消泡する構成となっている。
また、軸部5上であってシール部12の上方には、ブラケット19と所定の間隔を形成するように、円板形状のラビリンスシール21が取り付けられている。
また、連通管23上であって、アイソレータ24と軸受室7との間には、パージガスを連通管23に導入することができるパージガス供給装置30が接続されている。パージガスとしては、例えば、N2、CO2などの不活性ガスが好適である。パージガスは、パージガスバルブ31を操作することによって連通管23を介して軸受室7内に供給される。
制御装置は、各圧力計の測定値に基づき、タンク2内の圧力、軸受室7内の圧力を調整する機能を有している。例えば、連通管23及びアイソレータ24の作用のみではタンク2内の圧力と軸受室7内の圧力の均衡が図れず、タンク2内の圧力が負圧となった場合には、制御装置は、パージガスバルブ31を操作して軸受室7内にパージガスを導入する。
また、制御装置は、軸受室7内の圧力又はタンク2内の圧力が上昇した場合、適時第一開放バルブ34や第二開放バルブ37を操作して気体を開放する。
第一永久磁石14と第二永久磁石15とが磁気カップリング16を構成していることによって、モータ11の駆動により、消泡部3が回転する。消泡部3の回転により液体W上の泡の消泡が行われる。
消泡はバッチ運転によって行われる。即ち、タンク2内に貯留された液体Wが密封状態を保ったまま消泡が行われる。
軸受室7の圧力、又はタンク2内の圧力が上昇した場合、第一開放バルブ34、第二開放バルブ37が開放されて、圧力の低下が図られる。
即ち、息継ぎ現象によって消泡羽根4周囲に堆積した泡を吸い込む可能性を排除することができる。また、息継ぎ現象によって消泡により発生したミストを吸い込む可能性を排除することができる。
また、メカニカルシールを使用した場合、定期的な交換や冷却材が必要となるなどコストが高額となるが、これが不要となりコストの低減を図ることができる。
また、タンク2内の圧力が負圧となった場合にパージガスを噴射することによって、タンク2内の圧力が負圧となった場合に増加する泡の軸受室7内への侵入を抑制することができる。
例えば、上記実施形態では、タンク2内の臭気などのガス成分の混入を防止するためにアイソレータ24を設ける構成としたが、これに限ることはなく、ミストセパレータなどのフィルターを設ける構成としてもよい。
2 タンク
3 消泡部
4 消泡羽根
5 軸部
6 軸受ケーシング
7 軸受室
8 軸受装置
11 モータ(駆動部)
12 シール部
14 第一永久磁石
15 第二永久磁石
16 磁気カップリング
17 隔壁
19 ブラケット
20 Oリング及びオイルシール
21 ラビリンスシール
23 連通管(圧力調整部)
24 アイソレータ
25 シリンダー
26 ピストン
27 第一室
28 第二室
29 アイソレータ用圧力計
30 パージガス供給装置
31 パージガスバルブ
33 第一配管
34 第一開放バルブ
35 軸受室用圧力計
36 第二配管
37 第二開放バルブ
38 タンク用圧力計
W 液体
Claims (5)
- 発泡性の液体が貯留されたタンクと、
前記タンク内とシール部を介して区画される軸受室を形成し、前記軸受室内に軸受装置が設けられた軸受ケーシングと、
前記軸受装置によって回転可能に支持されるとともに前記シール部を介して前記タンク内に挿入されて、回転することで前記液体の消泡を行う消泡部と、
前記軸受ケーシングの外部に配置されて、磁気カップリングを介して前記消泡部を回転駆動させる駆動部と、
前記軸受室内の圧力と前記タンク内の圧力との差分が小さくなるように圧力調整を行う圧力調整部と、を備える消泡装置。 - 前記圧力調整部は、前記タンクと前記軸受室とを接続する管状の連通管である請求項1に記載の消泡装置。
- 前記連通管を介して、前記軸受室内にパージガスを供給可能なパージガス供給装置を有する請求項2に記載の消泡装置。
- 前記連通管には、シリンダーと、前記シリンダーを第一室と第二室とに仕切るピストンとを有するアイソレータが設けられている請求項2又は請求項3に記載の消泡装置。
- 前記シール部がOリング及びオイルシールによって構成されている請求項1から請求項4のいずれか一項に記載の消泡装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480040993.3A CN105392540B (zh) | 2013-08-13 | 2014-07-25 | 消泡装置 |
KR1020167002126A KR101747053B1 (ko) | 2013-08-13 | 2014-07-25 | 소포 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2013168109A JP6148931B2 (ja) | 2013-08-13 | 2013-08-13 | 消泡装置 |
JP2013-168109 | 2013-08-13 |
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WO2015022852A1 true WO2015022852A1 (ja) | 2015-02-19 |
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PCT/JP2014/069727 WO2015022852A1 (ja) | 2013-08-13 | 2014-07-25 | 消泡装置 |
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JP (1) | JP6148931B2 (ja) |
KR (1) | KR101747053B1 (ja) |
CN (1) | CN105392540B (ja) |
WO (1) | WO2015022852A1 (ja) |
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CN106281978A (zh) * | 2016-08-08 | 2017-01-04 | 上海国强生化工程装备有限公司 | 一种组合式消泡桨及使用组合式消泡桨的微型生物反应器 |
CN106281978B (zh) * | 2016-08-08 | 2019-04-09 | 上海国强生化工程装备有限公司 | 一种组合式消泡桨及使用组合式消泡桨的微型生物反应器 |
EP3970498A1 (de) * | 2020-09-21 | 2022-03-23 | DIOSNA Dierks & Söhne GmbH | Knetmaschine für nahrungsmittelteige mit abdichtung der knetwerkzeuge |
WO2022058477A1 (de) * | 2020-09-21 | 2022-03-24 | DIOSNA Dierks & Söhne GmbH | Knetmaschine für nahrungsmittelteige mit abdichtung der knetwerkzeuge |
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CN105392540B (zh) | 2018-10-09 |
JP6148931B2 (ja) | 2017-06-14 |
CN105392540A (zh) | 2016-03-09 |
KR101747053B1 (ko) | 2017-06-14 |
KR20160022926A (ko) | 2016-03-02 |
JP2015036134A (ja) | 2015-02-23 |
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