JPS6338694A - Positive extrusion system cavity propulsion type rotary pump - Google Patents
Positive extrusion system cavity propulsion type rotary pumpInfo
- Publication number
- JPS6338694A JPS6338694A JP62142425A JP14242587A JPS6338694A JP S6338694 A JPS6338694 A JP S6338694A JP 62142425 A JP62142425 A JP 62142425A JP 14242587 A JP14242587 A JP 14242587A JP S6338694 A JPS6338694 A JP S6338694A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- drive shaft
- pump
- stator
- metal alloy
- 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
Links
- 238000001125 extrusion Methods 0.000 title description 3
- 239000000463 material Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 229910001152 Bi alloy Inorganic materials 0.000 claims description 2
- 238000013021 overheating Methods 0.000 description 5
- 239000002360 explosive Substances 0.000 description 3
- 241000405961 Scomberomorus regalis Species 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 240000008168 Ficus benjamina Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、剛体の金属性つる巻回転子軸が固定の固定
子の中で回転する、積極押出し式空洞前進形回転ポンプ
に関する。エラストマのような弾性材料で構成さｎ ｆ
Ｃ固定子は、これ全貫通する軸線方向長手向きの空洞を
有し、この空洞は、つる巻溝を形成する。１１定子究洞
の宇金回転するときに、回転子は、固定子と接触して、
軸線方向に勤〈−運の空洞全形成し、かくして、押出し
式ポンプが形成される。かかるポンプは良く知られ、以
下において、単に仝洞前進形ポンプまたはＰＣポンプと
称せられる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a positively ejected, hollow advancing rotary pump in which a rigid metallic helical rotor shaft rotates within a fixed stator. Constructed of elastic material such as elastomer n f
The C stator has an axially longitudinal cavity extending all the way through it, the cavity forming a helical groove. 11 When the rotor rotates, the rotor comes into contact with the stator,
The working cavity is completely formed in the axial direction, thus forming a push-out pump. Such pumps are well known and are hereinafter simply referred to as tunnel advancement pumps or PC pumps.
ＰＣポンプは、高粘性のスラリまたは乳濁液をポンプ送
シすることが必要な工業で、一般に使用される。材料の
流量は回転速度に比例するから、ＰＣポンプは特に、ｆ
ｉｆ密なふの材料送出を伴なう用途に、例えば連続的に
包装容器に材料を詰める作業に、十分に適する。PC pumps are commonly used in industries where it is necessary to pump highly viscous slurries or emulsions. Since the flow rate of material is proportional to the rotational speed, PC pumps especially have f
It is well suited for applications involving dense material delivery, for example for continuous filling of packaging containers.
ＰＣポンプの固定子は一般にエジストマで形成され、ま
た回転子は、固定子と密に接触して作動しなければなら
ないから、固定子の保全を維持すべきときには、ポンプ
を乾いた状態で運転しないことが肝要である。ポンプ送
シされる流体が通過しない乾いた運転によって、過熱が
生じ、これは、認知され補正されない場合には、固定子
の破損を招く、同様に、ＰＣポンプの前方の出口バルブ
またはラインに、何らかの閉塞が生じた場合には、回転
子の滑シ運転および固定子の中での過熱が生じ、おそら
くは、固定子およびポンプ送シされる製品の双方に、損
害が起る。可燃性または爆発性の材料のポンプ送シにお
ける↓うな成る工業では、かかる過熱は、明らかな理由
で確実に回避されなければならない。Because the stator of a PC pump is generally made of an elastomer and the rotor must operate in close contact with the stator, the pump should not be operated dry when stator integrity is to be maintained. That is essential. Dry operation with no pumped fluid passing through will result in overheating which, if not recognized and corrected, will lead to stator failure; If any blockage occurs, slippage of the rotor and overheating in the stator will occur, with possible damage to both the stator and the product being pumped. In the industry where flammable or explosive materials are pumped, such overheating must be reliably avoided for obvious reasons.
従来において、回転ポンプの作動条件を感知するだめの
多くの提案が開示されている。In the past, many proposals for sensing the operating conditions of rotary pumps have been disclosed.
米国特許第一、ｓ ／ ２．７ ｂ Ｓ最明組ぞには、
低いまたは高い出口圧力を感知できる外Ｓ取付けの圧力
スイッチの使用が記載されている。このスイッチは、ポ
ンプの駆動モータに供給される電力を制御する。U.S. Patent No. 1, s/2.7b S Saimei Group,
The use of external S-mounted pressure switches capable of sensing low or high outlet pressures has been described. This switch controls the power supplied to the pump's drive motor.
米国特許第３．／／八へ０１１号最明曹に記載のもので
は、過熱の場合に回転子の運動を押さえるに適した、熱
および摩擦で膨張できる制動リングが使用される。U.S. Patent No. 3. //8he No. 011 Saimeiso uses a thermally and frictionally expandable damping ring suitable for damping the motion of the rotor in case of overheating.
米国特許第３．θＯｇ、弘コロ号明約省には最明波的失
敗または目詰シの場合にポンプ送少要素全ポンプ駆動部
から切離す、こわれ易い機械的継手の使用が開示される
。U.S. Patent No. 3. The θOg, Hirokoro issue discloses the use of a frangible mechanical coupling that disconnects the pump delivery element from the entire pump drive in the event of failure or clogging.
米国特許第一、７７ｇ、３ ／ ３号明細書によれば、
外部に取付けられた電力切換用サーモスタットが使用さ
れる。According to U.S. Pat. No. 1, 77g, No. 3/3:
An externally mounted power switching thermostat is used.
米国特許第７．ダコ６．２０６号明細書によれば、ポン
プの外方ケーシングに取付けられた可融性の結合部材が
使用され、この結合部材が電気スイッチ全制御する。U.S. Patent No. 7. According to Dako 6.206, a fusible coupling member is used which is attached to the outer casing of the pump and which controls the entire electrical switch.
米国特許第り、Ｓ ＯＯ，コロｇ号明細書には、駆動軸
を回転状態に維持する可融性の締付ピン解放機構の使用
が開示される。U.S. Pat. No. 1, SOO, Co., Ltd. discloses the use of a fusible clamp pin release mechanism to maintain the drive shaft in rotation.
上述した明細書によるすべての構想は、賞賛に値するも
のであるが、ＰＣポンプの中に発生した危険な温度を感
知でき、迅速な救済作用を達成できる、簡単でフールプ
ルーフな経済的な手段を必要とする。Although all the initiatives in the above-mentioned specification are commendable, there is a need for a simple, fool-proof and economical means of sensing dangerous temperatures occurring in a PC pump and achieving rapid remedial action. I need.
この発明は、固定子空洞の中に、熱で作動される解除可
能か駆動機構を有する、積極押出し式空洞前進形回転ポ
ンプ（ｐｃポンプ）を提供する。The present invention provides a positive thrust cavity forward rotary pump (PC pump) having a thermally actuated releasable drive mechanism within the stator cavity.
特にこの発明は、結合された可融性の連結によって、回
転子が駆動軸に取付けられる、ＰＣポンプが提供される
。In particular, the present invention provides a PC pump in which the rotor is attached to the drive shaft by a bonded fusible connection.
この発明によれば、積極押出し式空洞前進形回転ポンプ
が、固定子、前記固定子の中の回転子、前記固定子に設
けられた入口と出口、およびｎｉｌ記回転回転子結され
た駆動軸、全１１し、これにおいて、前記回転子に対す
る前記駆動軸のｉｉＪ記連結が、前記駆動軸と前記回転
子の開の機械的結合を構成する量の、熱で融解できる金
の冷却の、熱に感じ易い解除可能な結合からな’）、ｒ
ｉ”記金の冷却が、ポンプ空洞の中に熱が発生した際に
、ＬＪｉＪ記機株的結合を遮断するために融解できる。According to the present invention, a positive extrusion type cavity forward rotary pump comprises a stator, a rotor in the stator, an inlet and an outlet provided in the stator, and a drive shaft connected to the rotating rotor. , all 11, wherein the coupling of the drive shaft to the rotor comprises cooling an amount of thermally meltable gold such that the connection of the drive shaft to the rotor constitutes an open mechanical connection of the drive shaft and the rotor. This is because of the releasable bond that is easy to feel.'), r
The cooling metal can melt when heat is generated in the pump cavity to interrupt the LJiJ metal bond.
この構成によれば、回転子は、固定子の中で過剰の摩擦
または乾き運転状態によって加熱されたときに、その内
核に及び熱で融解できる金属結合に熱を伝達し、この結
合が軟化し、回転子が駆動軸から機械的に遮断される。According to this configuration, when the rotor is heated in the stator due to excessive friction or dry operating conditions, it transfers heat to its inner core and to the thermally meltable metal bonds, which soften. , the rotor is mechanically isolated from the drive shaft.
以下、図面を参照しながら、この発明の＄施例について
説明する。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
図面において、Ｐ１様の部分は巨１−の符号で示される
。図示される普通の積極押出し大空洞前進形ポンプ組立
体／ば、入口室＝、駆動軸支持ノ・ウジング３および固
定子ダからなる。金属のつる巻回転子Ｓは、固定子ダの
中に配置される。組会わせ駆動軸６は、回転子Ｓに連結
される。＆動軸６ムは、軸受７によって支持される。、
駆動軸乙には、歯車自在継手ＫＡおよびｇＢが設けられ
る。、駆動軸６Ａのまわりには、シール９が設けられる
。ポンプ送シすべき製品は、開口ＩＯを通して入口室−
の中に導入され、ポンプによって、出口１／を通って送
出される。駆動軸６Ａと６Ｂおよびこれに連結された回
転子Ｓは、電動モータまたは液圧モータ（図示なし）に
よって、組立体の中で回転する。In the drawings, the P1-like portion is indicated by a giant 1- symbol. The conventional positive extrusion large cavity advancing pump assembly shown consists of an inlet chamber, a drive shaft support housing 3, and a stator body. A metal helical rotor S is placed within the stator. The combination drive shaft 6 is connected to the rotor S. & The moving shaft 6 is supported by a bearing 7. ,
Drive shaft B is provided with gear universal joints KA and gB. , a seal 9 is provided around the drive shaft 6A. The product to be pumped enters the inlet chamber through the opening IO.
and is pumped out through outlet 1/ by means of a pump. The drive shafts 6A and 6B and the rotor S coupled thereto are rotated within the assembly by electric or hydraulic motors (not shown).
特に、第２図を参照すｊば、回転子Ｓは、長手Ｘ直装置
の円筒開孔ｌ−をその中に有する。駆動軸の延長部１３
は、円筒開孔ｌコの中の中央に嵌められる。駆動軸延長
部／３と同局Ｒ孔／コの壁との間の＠線方向間隙の中に
は、可融性の金属結合材料ｌ弘が存し、これによって、
駆動軸延長部１３は、円筒開孔ｌ−の壁に機械的に結合
される。可融性の金属結合材料ｌダは、高い燈経的また
は物理的な強度を有するけれども極めて低い融解温度を
有するとして知られているような、金桟合金から選ばす
る。米国ペンシルバニア州ベレホントのセロ金属製作所
から入手できるセロ（ａｖＲＲｏ 、商標）合金のよう
なビスマス合金は、特にすぐれている。かかる合金は、
速強な齢囲の融解温度および物理的強度で利用でき、ざ
らに鋳造特性を有する。In particular, referring to FIG. 2, the rotor S has a cylindrical aperture l- of the longitudinal X-direction device therein. Drive shaft extension 13
is fitted into the center of the cylindrical hole. In the linear gap between the drive shaft extension/3 and the wall of the R hole/co, there is a fusible metallic bonding material, whereby
The drive shaft extension 13 is mechanically coupled to the wall of the cylindrical aperture l-. The fusible metal bonding material is selected from metal alloys, such as those known to have high mechanical or physical strength but extremely low melting temperatures. Bismuth alloys, such as Cero (avRRo™) alloy, available from Cero Metal Fabrication, Berrehont, Pennsylvania, USA, are particularly superior. Such an alloy is
It is available in a fast aging range of melting temperature and physical strength, and has rough casting properties.
円筒開孔ｌコの中の中央に、量販を良いて延長部１３を
配置し、延長部１３と円筒１５ｉｊ孔／コの壁の間の軸
線方向間隙の中に、融解した金属結合材料ｌダを導入す
ることによって、駆動軸延長部１３は、簡単に回転子５
に結合できる。凝固ののちに、強力な機械的結合が達成
される。ポンプの作動の際に、固定子弘の中で高温が発
生した毬合には、熱は、回転子Ｓによって吸収され、可
融性の金属結合部／４ｔに伝達され６．十分な熱が回転
子５の中核に伝達されると、金属ｌ弘は軟化し、軸延長
部／３と回転子５の間の＠械的連結が破れ、かくしてポ
ンプの作用が停止する。A mass-produced extension 13 is placed in the center of the cylindrical aperture, and a molten metal bonding material is inserted into the axial gap between the extension 13 and the wall of the cylindrical hole 15. By introducing the drive shaft extension 13, the rotor 5 can be easily
Can be combined with After solidification, a strong mechanical bond is achieved. In the event that a high temperature is generated in the stator during operation of the pump, the heat is absorbed by the rotor S and transferred to the fusible metal joint 6. When enough heat is transferred to the core of the rotor 5, the metal core softens and the mechanical connection between the shaft extension /3 and the rotor 5 breaks, thus stopping the action of the pump.
熱を起す条件が解消したのちに、代りの回転子と軸延長
部の組会わせが、駆動軸乙に取付けでき、ポンプが再び
組立てでき、ポンプ送シ作動が再開できる。成る場合に
は、ポンプ組立体を冷却するだけで十分であシ、このよ
うにすると、ポンプを分解する必要なしに、金属結合材
料が再凝固できる。After the heating condition has subsided, a replacement rotor and shaft extension combination can be attached to the drive shaft, the pump can be reassembled, and pumping operation can be resumed. In this case, it is sufficient to simply cool the pump assembly so that the metallurgical bonding material can resolidify without the need to disassemble the pump.
第３図は、第一図の代シの実施例を示す。これにおいて
軸延長部１３は、つる巻溝１５をその表面に有する。き
らに、軸延長部１３は、その各端において、プラスチッ
クのブシュ／／、によって位置決めされ支持される。第
３図に示される構成は、爆発物その他の熱１’ｉ：感じ
易い材料をポンプ送シする作動に使用するに、特に適す
る。過熱の場合に、融解した可融性材料／弘は、’；４
ｈ付き軸延長部／Ｊの回転によって、円筒開孔ｌ；から
入ロ宛二〇千に、らせん式で送られる１回転する軸（軸
延長部）１３と円筒開孔／コの壁との間の金属対金属接
触は、支持ブシュ／６によって防止される。シールｌり
は、ブシュ／ＡＡのまわシへの爆発物または熱ｔこ感じ
易い材料の侵入を阻止するために、このブシュの近くに
設けられる。FIG. 3 shows a substitute embodiment of FIG. 1. In this, the shaft extension 13 has a helical groove 15 on its surface. In addition, the shaft extension 13 is positioned and supported at each end thereof by a plastic bushing. The configuration shown in FIG. 3 is particularly suitable for use in operations pumping explosives and other heat-sensitive materials. In case of overheating, the melted fusible material/hiro is ';4
By the rotation of the shaft extension with h, the shaft (shaft extension) 13, which rotates once and is sent in a helical manner from the cylindrical hole l; Metal-to-metal contact between them is prevented by the support bushing/6. A seal is provided near the bushing/AA to prevent the ingress of explosives or heat-sensitive materials into the bushing.
！／図は、典型的なＰＣポンプの長手断面図である。第
２図は、回転子と小効囮ｊの１出の可融性結合の望まし
い実施例の詳ｌ￥＋ｌｌを示す、拡大断面図である。第
３図は、可融性結合の別の実施例の拡大断面図である。
図面において、ｌはポンプ組立体、−は入口室、ダは固
定子、Ｓは回転子、ＡＩ”１．駆動軸、ｌｌは出口、／
−は円筒開°孔、１４ｔは金の冷却を示す。! / is a longitudinal cross-sectional view of a typical PC pump. FIG. 2 is an enlarged cross-sectional view showing details of a preferred embodiment of a single fusible connection of the rotor and the small effect decoy j. FIG. 3 is an enlarged cross-sectional view of another embodiment of a fusible bond. In the drawings, l is the pump assembly, - is the inlet chamber, da is the stator, S is the rotor, AI"1. drive shaft, ll is the outlet, /
- indicates a cylindrical opening, and 14t indicates cooling of gold.
Claims (1)
けられた入口と出口、および前記回転子に連結された駆
動軸、を有する積極押出し式空洞前進形回転ポンプにお
いて、前記回転子に対する前記駆動軸の前記連結が、前
記駆動軸と前記回転子の間の機械的結合を達成する量の
、熱で融解できる金属合金の、熱に感じ易い解除可能な
結合からなり、前記金属合金が、ポンプ空洞の中に熱が
発生した際に、前記機械的結合を遮断するために融解で
きること、を特徴とするポンプ。 ２、前記機械的結合が、前記回転子の中の長手方向の円
筒開孔と、これの中に可融性金属結合関係で配置された
、前記駆動軸の先端部とからなる、特許請求の範囲第１
項に記載のポンプ。 ３、前記駆動軸先端部が、その表面に刻設されたつる巻
溝を有する、特許請求の範囲第２項に記載のポンプ。 ４、前記駆動軸先端部がさらに、プラスチックのブシユ
によつて前記円筒開孔の中で位置決めされる、特許請求
の範囲第２項または第３項に記載のポンプ。 ５、熱で融解できる金属合金がビスマス合金である、特
許請求の範囲第１項から第４項のいずれか１項に記載の
ポンプ。 ６、機械的結合が金属合金の融解によつて遮断されたの
ちに、機械的結合が、前記金属合金の冷却および再凝固
によつて、再達成できるように、前記の解除可能な結合
が構成される、特許請求の範囲第１項から第５項のいず
れか１項に記載のポンプ。[Claims] 1. A positively extruded cavity advancing type having a stator, a rotor in the stator, an inlet and an outlet provided in the stator, and a drive shaft connected to the rotor. In a rotary pump, the connection of the drive shaft to the rotor is made of a heat-sensitive releasable material of a heat-meltable metal alloy in an amount to achieve a mechanical connection between the drive shaft and the rotor. A pump comprising a bond, characterized in that said metal alloy is capable of melting in order to break said mechanical bond when heat is generated within the pump cavity. 2. The mechanical coupling comprises a longitudinal cylindrical aperture in the rotor and a distal end of the drive shaft disposed therein in fusible metal coupling relationship. Range 1
Pumps listed in section. 3. The pump according to claim 2, wherein the drive shaft tip has a helical groove carved on its surface. 4. A pump according to claim 2 or 3, wherein the drive shaft tip is further positioned within the cylindrical aperture by a plastic bushing. 5. The pump according to any one of claims 1 to 4, wherein the heat-meltable metal alloy is a bismuth alloy. 6. The releasable bond is configured such that after the mechanical bond has been broken by melting the metal alloy, the mechanical bond can be re-established by cooling and resolidifying the metal alloy. A pump according to any one of claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA514904 | 1986-07-29 | ||
| CA514904 | 1986-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6338694A true JPS6338694A (en) | 1988-02-19 |
Family
ID=4133651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62142425A Pending JPS6338694A (en) | 1986-07-29 | 1987-06-09 | Positive extrusion system cavity propulsion type rotary pump |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0255336A3 (en) |
| JP (1) | JPS6338694A (en) |
| AU (1) | AU7344087A (en) |
| BR (1) | BR8703824A (en) |
| GB (1) | GB2193292B (en) |
| NO (1) | NO873153L (en) |
| NZ (1) | NZ220313A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107743548A (en) * | 2015-06-12 | 2018-02-27 | 耐驰泵及系统有限公司 | Pump case for eccentrie helical totorpump and the eccentrie helical totorpump equipped with the pump case |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4134853C1 (en) * | 1991-05-22 | 1992-11-12 | Netzsch-Mohnopumpen Gmbh, 8264 Waldkraiburg, De | |
| US5603608A (en) * | 1995-04-19 | 1997-02-18 | Ici Canada, Inc. | Methods and apparatus for monitoring progressive cavity pumps |
| US5779460A (en) * | 1996-06-07 | 1998-07-14 | Ici Canada Inc. | Progressive cavity pump with tamper-proof safety |
| US6220838B1 (en) | 1999-11-03 | 2001-04-24 | Dyno Nobel Inc. | Progressive cavity pump with meltable stator |
| CA2389689A1 (en) * | 1999-11-03 | 2001-05-10 | Stephen Thomson | Pumps |
| US6361271B1 (en) * | 1999-11-19 | 2002-03-26 | Capstone Turbine Corporation | Crossing spiral compressor/pump |
| NO327505B1 (en) | 2007-09-11 | 2009-07-27 | Agr Subsea As | Eccentric screw pump adapted for pumping of compressible fluids |
| NO327503B1 (en) | 2007-09-20 | 2009-07-27 | Agr Subsea As | Eccentric screw pump with multiple pump sections |
| NO329714B1 (en) * | 2008-08-21 | 2010-12-06 | Agr Subsea As | External rotor in eccentric screw pump with an inner and an outer rotor |
| NO329713B1 (en) | 2008-08-21 | 2010-12-06 | Agr Subsea As | Eccentric screw pump with an inner and an outer rotor |
| WO2017154023A1 (en) * | 2016-03-07 | 2017-09-14 | Sona Pumps | Motor with positive displacement helical pump inside motor shaft |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2539534A (en) * | 1949-11-23 | 1951-01-30 | Phillips Petroleum Co | Safety coupling device |
| US2873006A (en) * | 1957-09-11 | 1959-02-10 | Phillips Roy | Brake adjustment mechanism |
| US3193068A (en) * | 1962-04-24 | 1965-07-06 | Ingersoll Rand Co | Temperature-responsive coupling means |
| DE1816462A1 (en) * | 1968-12-21 | 1970-07-02 | Netzsch Maschinenfabrik | Rotor for screw type pumps with ceramic - coating or sleeve |
-
1987
- 1987-05-14 NZ NZ220313A patent/NZ220313A/en unknown
- 1987-05-18 GB GB8711687A patent/GB2193292B/en not_active Expired - Lifetime
- 1987-05-27 AU AU73440/87A patent/AU7344087A/en not_active Abandoned
- 1987-06-09 JP JP62142425A patent/JPS6338694A/en active Pending
- 1987-07-22 BR BR8703824A patent/BR8703824A/en unknown
- 1987-07-28 EP EP87306650A patent/EP0255336A3/en not_active Withdrawn
- 1987-07-28 NO NO873153A patent/NO873153L/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107743548A (en) * | 2015-06-12 | 2018-02-27 | 耐驰泵及系统有限公司 | Pump case for eccentrie helical totorpump and the eccentrie helical totorpump equipped with the pump case |
| CN107743548B (en) * | 2015-06-12 | 2019-05-17 | 耐驰泵及系统有限公司 | Pump case for eccentrie helical totorpump and the eccentrie helical totorpump equipped with the pump case |
Also Published As
| Publication number | Publication date |
|---|---|
| NZ220313A (en) | 1988-06-30 |
| NO873153D0 (en) | 1987-07-28 |
| GB2193292A (en) | 1988-02-03 |
| GB2193292B (en) | 1990-04-18 |
| AU7344087A (en) | 1988-02-04 |
| GB8711687D0 (en) | 1987-06-24 |
| EP0255336A3 (en) | 1988-05-04 |
| NO873153L (en) | 1988-02-01 |
| BR8703824A (en) | 1988-03-29 |
| EP0255336A2 (en) | 1988-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6338694A (en) | Positive extrusion system cavity propulsion type rotary pump | |
| TW360752B (en) | Rotor assembly and progressive cavity pump | |
| EP1120569B1 (en) | Magnet pump | |
| US4086991A (en) | Thermally actuated disconnect coupling | |
| US4471963A (en) | Sealing member for rotating shaft and method of sealing therewith | |
| TW538199B (en) | Two-shafts vacuum-pump and production method of a unit for said two-shafts vacuum pump | |
| US3889789A (en) | Thermal fuse mechanical disconnect | |
| US2283348A (en) | Pump | |
| JPH0515365B2 (en) | ||
| US3923290A (en) | Shear control for extruder apparatus | |
| RU2256828C2 (en) | Clutch for transmitting limited torque | |
| JPH10325399A (en) | Machine having heat insulation device | |
| JP2840190B2 (en) | Magnet driven pump | |
| JP2001090537A (en) | Water pump | |
| AU747571B2 (en) | Progressive cavity pump with meltable stator | |
| JP3164723B2 (en) | Metal injection machine sealing device | |
| TW482876B (en) | Pumps | |
| JPS6098838A (en) | Motor | |
| JPH07109253B2 (en) | Shaft seal device | |
| RU1431434C (en) | Keyless joint | |
| CN115199582A (en) | Rotary machine | |
| JPH0213618B2 (en) | ||
| SU1620714A1 (en) | Sliding-contact bearing | |
| MXPA98010237A (en) | Cavity pump progress | |
| SU1291755A1 (en) | Safety hydraulic clutch |