WO2016075993A1 - 流動体搬送装置 - Google Patents
流動体搬送装置 Download PDFInfo
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- WO2016075993A1 WO2016075993A1 PCT/JP2015/074716 JP2015074716W WO2016075993A1 WO 2016075993 A1 WO2016075993 A1 WO 2016075993A1 JP 2015074716 W JP2015074716 W JP 2015074716W WO 2016075993 A1 WO2016075993 A1 WO 2016075993A1
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- Prior art keywords
- rotor
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Classifications
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- 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
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- 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
-
- 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
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
-
- 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
- F04C2/1073—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 where one member is stationary while the other member rotates and orbits
- F04C2/1075—Construction of the stationary member
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- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
Definitions
- the present invention relates to a fluid transfer device.
- a fluid transfer device As a fluid transfer device, it is formed into a cylindrical, screw-shaped through hole in the form of an external thread, and is inserted into the through hole of the stator to transfer between the inner circumferential surface and the stator. And a rotor for moving the transfer space from the suction port side to the discharge port side by forming a space and rotating, the through hole of the stator has an interference which is elastically deformed by being pressed by the rotor, DESCRIPTION OF RELATED ART
- the uniaxial eccentric screw pump which made the interference on the exit side smaller than the interference on the suction port side is known (for example, refer patent document 1).
- the fluid is a highly volatile liquid or a liquid with a large amount of dissolved gas
- the following problems may occur. That is, when the transport space is larger on the downstream side in the transport direction than on the upstream side in the transport direction due to manufacturing tolerance or the like, bubbles may be generated from the fluid due to negative pressure. Specifically, the highly volatile liquid is vaporized, and the liquid having a large amount of dissolved gas can not be completely dissolved to generate bubbles. Then, once air bubbles are generated from the fluid, when the fluid is used for coating and coating, for example, the air bubbles become defects.
- Patent No. 5388187 gazette
- An object of the present invention is to securely prevent generation of air bubbles from a fluid when the fluid is transported by a transport space formed by a stator and a rotor.
- a cylindrical stator having a female screw-shaped through hole formed at a predetermined pitch in the flow direction from the suction port to the discharge port; It is formed in an external thread shape, and is inserted into the through hole of the stator to form a transfer space with the inner peripheral surface, and by rotating it flows in the transfer space while being inscribed in the inner peripheral surface.
- a rotor for moving the body from the suction port side to the discharge port side; Equipped with A fluid transfer device is provided, characterized in that the volume of the transfer space is reduced in the flow direction.
- the volume of the transfer space may be reduced by reducing the pitch of the internal thread of the through hole of the stator and the external thread of the rotor.
- the volume of the transfer space may be reduced by reducing the cross-sectional area of the through hole of the stator.
- the volume of the transfer space may be reduced by increasing the rotor diameter of the rotor.
- the volume of the transfer space may be reduced by reducing the amount of eccentricity of the rotor.
- the reduction rate of the pitch of the female screw shape and the male screw shape of the rotor in the through hole of the stator, the reduction rate of the cross sectional area of the through hole of the stator, the increase rate of the rotor diameter of the rotor, or the eccentricity of the rotor is preferably equal to or more than the manufacturing tolerance.
- the present invention since the volume of the transfer space is reduced in the flow direction of the fluid, it is possible to reliably prevent generation of air bubbles from the fluid due to negative pressure in the flow space. Can.
- FIG. 1 is a fragmentary schematic sectional view of the uniaxial eccentric screw pump which concerns on 3rd Embodiment, (b) is sectional drawing in the each part.
- A) is a fragmentary schematic sectional view of the uniaxial eccentric screw pump which concerns on 4th Embodiment, (b) is sectional drawing in the each part.
- FIG. 1 shows a uniaxial eccentric screw pump according to the present embodiment.
- the uniaxial eccentric screw pump includes a driving device (not shown) provided on one end side of the casing 1, a stator 2 provided on the other end side, a rotor 3 and an end stud 4.
- the casing 1 is a cylindrical metal material, and the coupling rod 5 is accommodated therein. One end of the coupling rod 5 is connected to the coupling 6 so that power from the driving machine is transmitted. Further, a connection pipe 7 is connected to an outer peripheral surface at one end side of the casing 1 so that a fluid can be supplied from a tank or the like not shown.
- the stator 2 is composed of an outer cylinder 8 and a stator main body 9 disposed in close contact with the inner surface thereof.
- the outer cylinder 8 has a cylindrical shape made of a metal material.
- the stator main body 9 is cylindrical (for example, cylindrical), an elastic material (for example, silicone rubber; fluororubber for silicone oil-containing cosmetics, etc.) selected appropriately according to the material to be transported. ).
- the central hole 10 of the stator 2 has n inner circumferential surfaces and is formed into a single-step or multi-step female screw shape.
- the rotor 3 is a single-step or multi-step male screw in the form of n-1 bars of a shaft made of a metal material.
- the rotor 3 is disposed in the central hole 10 of the stator 2 to form a conveyance space 11 connected in the longitudinal direction.
- One end of the rotor 3 is connected to the coupling rod 5 on the casing side, and rotates inside the stator 2 and revolves along the inner circumferential surface of the stator 2 by a driving force from a driving machine (not shown). That is, by eccentrically rotating the rotor 3 in the central hole 10 of the stator 2, the material in the transport space 11 can be transported in the longitudinal direction.
- the external shape of the center hole 10 of the stator main body 9 and the rotor 3 is configured as follows.
- the pitch of the internal thread of the through hole of the stator 2 and the pitch of the external thread of the rotor 3 become smaller toward the fluid transport direction (left side in the figure).
- the pitch dimension is changed from P1 to P5 (P1>P2>P3>P4> P5).
- FIG. 2B is a projection view in which the second sub-carrier space 13, the third sub-carrier space 14 and the fourth sub-carrier space 15 are superimposed on the first sub-carrier space 12 shown in FIG. 2 (a). Indicates As apparent from this figure, the proportion of the volume occupied by the transport space 11 gradually decreases as the pitch decreases in the transport direction.
- the flow passage cross-sectional area of the transfer space 11 formed by the stator 2 and the rotor 3 gradually decreases in the direction of transfer of the fluid (left side in the figure).
- the flow passage cross-sectional area, ie, the volume, of the transfer space 11 is reduced by gradually reducing the sizes of both the center hole 10 and the rotor 3 of the stator 2. I am trying to do it. That is, as shown in the projection view in each cross section of FIG. 3 (f), the first region 16 in FIG. 3 (e) and FIG. 3 (d), and the second in FIG. 3 (d) and FIG. In the region 17, FIG. 3C and FIG.
- the cross-sectional area of the portion corresponding to the third region 18 is small.
- the rotor 3 is made into the same position for convenience, it differs depending on the cross section in fact.
- the size (rotor diameter) of the rotor 3 is made to gradually increase in the direction of transport of the fluid (left side in the drawing).
- the shape of the central hole 10 of the stator 2 is also changed, but the cross-sectional area of the central hole itself at each position in the transport direction is the same.
- the central hole 10 has a large diameter according to the rotor diameter, it becomes short in the longitudinal direction (vertical direction in FIG. 4B), and the cross-sectional area occupied by the transport space 11 as a whole decreases. That is, the volume of the transfer space 11 gradually decreases in the transfer direction.
- the size of the rotor 3 may simply be increased without changing the shape of the stator 3.
- the configuration shown in FIG. 4 can be said to be a modification of the one that reduces the cross-sectional area of the flow path in the transport direction.
- the rotors 3 are at the same position, but in fact they differ depending on the cross section.
- the amount of eccentricity of the rotor 3 is made smaller as it goes in the fluid transport direction (left side in the figure). That is, the rotational center of the rotor 3 gradually approaches the center line of the central hole 10 of the stator 2 as it goes in the transport direction.
- the dimension of the central hole 10 in the longitudinal direction gradually decreases, and the ratio of the cross-sectional area occupied by the transfer space 11 decreases. That is, the volume of the transfer space 11 gradually decreases in the transfer direction.
- the volume of the transfer space 11 is gradually reduced toward the downstream side in the transfer direction. Therefore, the fluid is always transported under pressure. For this reason, it can be reliably prevented that the transfer space 11 is under negative pressure and air bubbles are generated in the fluid. Since no bubbles are generated in the fluid conveyed in this manner, when using the fluid for coating or coating, the bubbles appear on the coated surface or the coated surface, and the appearance is deteriorated. And there is no risk of quality deterioration.
- this invention is not limited to the structure described in the said embodiment, A various change is possible.
- the configurations shown in FIG. 2 to FIG. 5 are adopted, but these may be used in combination as appropriate.
- the rate of reducing the volume of the transfer space 11 in the transfer direction is not particularly mentioned, it is configured to surely reduce the volume even in consideration of manufacturing tolerances of components. Is preferred.
- the reduction rate of the amount of eccentricity of the rotor 2 may be equal to or greater than the manufacturing tolerance.
- the said embodiment demonstrated the structure for conveying without making a bubble generate
- it can also be comprised as follows. That is, the rotor 3 is rotated in the reverse direction, and the fluid transport direction is the direction from the left to the right in FIG. 1 (opposite to the transport direction in the above embodiment). As a result, the transfer space 11 expands as it goes in the transfer direction, and is always in a negative pressure state. Therefore, the gas dissolved in the fluid can be discharged as a bubble, and can function as a degassing device.
- the present invention can be used as an apparatus capable of conveying a fluid under pressure or conveying it under reduced pressure.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
筒状で、吸込口から吐出口に向かう流動方向に所定ピッチで形成された雌ねじ形状の貫通孔を有するステータと、
雄ねじ形状に形成され、前記ステータの貫通孔内に挿通されることにより、その内周面との間に搬送空間を形成し、回転することにより前記内周面に内接しながら前記搬送空間で流動体を吸込口側から吐出口側へと移動させるロータと、
を備え、
前記搬送空間の容積を、前記流動方向に向かって減少させることを特徴とする流動体搬送装置を提供する。
外筒8は、金属製材料を筒状としたものである。
ステータ本体9は、適宜搬送する材料に応じて選択されるゴム、樹脂等の弾性材料(例えば、シリコンゴム。シリコンオイルを含有する化粧品等に対してはフッ素ゴム)を筒状(例えば、円筒状)に形成したものである。ステータ2の中心孔10は、その内周面がn条で単段あるいは多段の雌ねじ形状とされている。
図2では、流動物の搬送方向(図中、左側)に向かうに従ってステータ2の貫通孔の雌ねじ形状、及び、ロータ3の雄ねじ形状のピッチが小さくなるようにしている。ここでは、ピッチ寸法をP1からP5まで変化させている(P1>P2>P3>P4>P5)。図2(b)に、図2(a)に図示される第1サブ搬送空間12に、第2サブ搬送空間13、第3サブ搬送空間14及び第4サブ搬送空間15を重ね合わせた投影図を示す。この図から明らかなように、搬送方向に向かうに従ってピッチが小さくなった分、搬送空間11が占める容積の割合が徐々に小さくなる。
タンク等から流動物を吐出させる場合、図示しない駆動機を駆動し、カップリング6及びカップリングロッド5を介してロータ3を回転させる。これにより、ステータ2の内周面とロータ3の外周面とによって形成される搬送空間11がこれらの長手方向へと移動する。これにより、タンクから吐出された流動物が搬送空間11に吸い込まれ、エンドスタッド4へと搬送される。そして、エンドスタッド4に至った流動物はさらに他の場所へと搬送される。
例えば、前記実施形態では、搬送方向に向かって搬送空間11の容積を徐々に減少させるために、図2から図5に記載の構成を採用するようにしたが、これらは適宜組み合わせて使用することができる。例えば、搬送方向に向かってロータ3及びステータ2のピッチを小さくすると共に、流路断面積を小さくするように構成することも可能である。
2…ステータ
3…ロータ
4…エンドスタッド
5…カップリングロッド
6…カップリング
7…接続管
8…外筒
9…ステータ本体
10…中心孔(貫通孔)
11…搬送空間
12…第1サブ搬送空間
13…第2サブ搬送空間
14…第3サブ搬送空間
15…第4サブ搬送空間
16…第1領域
17…第2領域
18…第3領域
Claims (6)
- 筒状で、吸込口から吐出口に向かう流動方向に所定ピッチで形成された雌ねじ形状の貫通孔を有するステータと、
雄ねじ形状に形成され、前記ステータの貫通孔内に挿通されることにより、その内周面との間に搬送空間を形成し、回転することにより前記内周面に内接しながら前記搬送空間で流動体を吸込口側から吐出口側へと移動させるロータと、
を備え、
前記搬送空間の容積を、前記流動方向に向かって減少させることを特徴とする流動体搬送装置。 - 前記搬送空間の容積を、前記ステータの貫通孔の雌ねじ形状、及び、前記ロータの雄ねじ形状のピッチを小さくすることにより減少させることを特徴とする請求項1に記載の流動体搬送装置。
- 前記搬送空間の容積を、前記ステータの貫通孔の断面積を小さくすることにより減少させることを特徴とする請求項1又は2に記載の流動体搬送装置。
- 前記搬送空間の容積を、前記ロータのロータ径を大きくすることにより減少させることを特徴とする請求項1から3のいずれか1項に記載の流動体搬送装置。
- 前記搬送空間の容積を、前記ロータの偏心量を小さくすることにより減少させることを特徴とする請求項1から4のいずれか1項に記載の流動体搬送装置。
- 前記ステータの貫通孔に於ける雌ねじ形状及び前記ロータの雄ネジ形状のピッチの減少割合、前記ステータの貫通孔の断面積の減少割合、前記ロータのロータ径の増加割合、又は、前記ロータの偏心量の減少割合は、製造公差以上としたことを特徴とする請求項2から5のいずれか1項に記載の流動体搬送装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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KR1020177012573A KR101762104B1 (ko) | 2014-11-14 | 2015-08-31 | 유동체 반송 장치 |
CN201580061694.2A CN107002667B (zh) | 2014-11-14 | 2015-08-31 | 流体输送装置 |
DE112015005160.0T DE112015005160T5 (de) | 2014-11-14 | 2015-08-31 | Fluidfördervorrichtung |
US15/525,494 US10364813B2 (en) | 2014-11-14 | 2015-08-31 | Liquid transport device with decreasing pitches |
US15/947,781 US10233921B2 (en) | 2014-11-14 | 2018-04-07 | Axis eccentric screw pump with decreasing sectional area of stator with a constant diameter rotor |
US15/947,783 US10233922B2 (en) | 2014-11-14 | 2018-04-07 | Axis eccentric screw pump with an increasing diameter rotor with a constant sectional area stator |
US15/947,785 US10227978B2 (en) | 2014-11-14 | 2018-04-07 | Liquid transport device with decreasing eccentricity of the rotor |
Applications Claiming Priority (2)
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JP2014-231992 | 2014-11-14 | ||
JP2014231992A JP5802914B1 (ja) | 2014-11-14 | 2014-11-14 | 流動体搬送装置 |
Related Child Applications (4)
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US15/525,494 A-371-Of-International US10364813B2 (en) | 2014-11-14 | 2015-08-31 | Liquid transport device with decreasing pitches |
US15/947,783 Division US10233922B2 (en) | 2014-11-14 | 2018-04-07 | Axis eccentric screw pump with an increasing diameter rotor with a constant sectional area stator |
US15/947,785 Division US10227978B2 (en) | 2014-11-14 | 2018-04-07 | Liquid transport device with decreasing eccentricity of the rotor |
US15/947,781 Division US10233921B2 (en) | 2014-11-14 | 2018-04-07 | Axis eccentric screw pump with decreasing sectional area of stator with a constant diameter rotor |
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WO2016075993A1 true WO2016075993A1 (ja) | 2016-05-19 |
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JP (1) | JP5802914B1 (ja) |
KR (1) | KR101762104B1 (ja) |
CN (4) | CN109281830B (ja) |
DE (1) | DE112015005160T5 (ja) |
MY (1) | MY180686A (ja) |
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US10626866B2 (en) * | 2014-12-23 | 2020-04-21 | Schlumberger Technology Corporation | Method to improve downhole motor durability |
KR101769067B1 (ko) * | 2016-05-24 | 2017-08-17 | 반석정밀공업주식회사 | 액상 물질 토출 장치 |
KR101968193B1 (ko) * | 2017-03-24 | 2019-08-13 | 반석정밀공업주식회사 | 액상 물질 토출 장치 |
DE202018104142U1 (de) | 2018-07-18 | 2019-10-22 | Vogelsang Gmbh & Co. Kg | Rotor für eine Exzenterschneckenpumpe |
WO2020232231A1 (en) * | 2019-05-14 | 2020-11-19 | Schlumberger Technology Corporation | Mud motor or progressive cavity pump with varying pitch and taper |
CN110206726A (zh) * | 2019-05-23 | 2019-09-06 | 南京彩云机械电子制造集团有限公司 | 螺杆泵 |
CN110884046A (zh) * | 2019-11-22 | 2020-03-17 | 广州市德创硅橡胶机械有限公司 | 一种供料系统及供料方法 |
WO2022158492A1 (ja) * | 2021-01-19 | 2022-07-28 | 武蔵エンジニアリング株式会社 | 流体移送装置および同装置を備える塗布装置、並びに、塗布方法 |
CN114453208A (zh) * | 2022-04-11 | 2022-05-10 | 江苏高凯精密流体技术股份有限公司 | 一种防气泡产生的送料装置 |
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- 2015-08-31 MY MYPI2017000714A patent/MY180686A/en unknown
- 2015-08-31 DE DE112015005160.0T patent/DE112015005160T5/de active Pending
- 2015-08-31 US US15/525,494 patent/US10364813B2/en active Active
- 2015-09-16 TW TW104130596A patent/TWI649497B/zh active
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2018
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Also Published As
Publication number | Publication date |
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US20170314551A1 (en) | 2017-11-02 |
CN109281830A (zh) | 2019-01-29 |
US10233921B2 (en) | 2019-03-19 |
JP5802914B1 (ja) | 2015-11-04 |
CN109098964A (zh) | 2018-12-28 |
US20180223838A1 (en) | 2018-08-09 |
KR20170058438A (ko) | 2017-05-26 |
US10227978B2 (en) | 2019-03-12 |
CN109098964B (zh) | 2020-04-14 |
CN109268257A (zh) | 2019-01-25 |
JP2016094907A (ja) | 2016-05-26 |
DE112015005160T5 (de) | 2017-09-14 |
CN107002667B (zh) | 2019-05-17 |
US20180223837A1 (en) | 2018-08-09 |
CN109268257B (zh) | 2020-02-21 |
TWI649497B (zh) | 2019-02-01 |
CN109281830B (zh) | 2020-10-30 |
KR101762104B1 (ko) | 2017-07-26 |
CN107002667A (zh) | 2017-08-01 |
US10233922B2 (en) | 2019-03-19 |
US10364813B2 (en) | 2019-07-30 |
MY180686A (en) | 2020-12-07 |
TW201629351A (zh) | 2016-08-16 |
US20180223836A1 (en) | 2018-08-09 |
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