WO2002004815A1 - Pompe a auto-amorçage - Google Patents

Pompe a auto-amorçage Download PDF

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Publication number
WO2002004815A1
WO2002004815A1 PCT/JP2001/005861 JP0105861W WO0204815A1 WO 2002004815 A1 WO2002004815 A1 WO 2002004815A1 JP 0105861 W JP0105861 W JP 0105861W WO 0204815 A1 WO0204815 A1 WO 0204815A1
Authority
WO
WIPO (PCT)
Prior art keywords
self
vortex
water
priming
casing
Prior art date
Application number
PCT/JP2001/005861
Other languages
English (en)
Japanese (ja)
Inventor
Yoshiaki Kanbara
Original Assignee
Honda Kiko Co., 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 Honda Kiko Co., Ltd. filed Critical Honda Kiko Co., Ltd.
Publication of WO2002004815A1 publication Critical patent/WO2002004815A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/02—Self-priming pumps

Definitions

  • the present invention relates to a self-priming pump used for pumping water.
  • a large vortex chamber and a small vortex chamber are formed around the impeller, and the upper end of the main pipe extending from the large vortex chamber and the sub-channel extending from the small vortex chamber are formed.
  • a vortex-forming space is formed in the main pipeline to generate a vortex in the main pipeline by discharging the vortex in the main pipeline to perform water-water separation. The vortex disappears in the main pipeline below the vortex-forming space. It has a structure in which mushroom-shaped lumps are provided as a means for causing it to move.
  • the latter self-priming pump has a structure in which a bag-shaped liquid stagnation chamber is provided in the middle of a trap communicating with the suction port of the casing.
  • a bag-shaped liquid stagnation chamber is provided in the middle of a trap communicating with the suction port of the casing.
  • water and water are separated by centrifugal separation by generating a vortex in the vortex formation space. I'm swelling.
  • the self-priming liquid merges from the small vortex chamber into the main pipe via the sub-pipe, returns from the main pipe to the large vortex chamber, and flows into the sub-pipe from the small vortex chamber.
  • a vortex develops in a tornado following this circulating flow due to the flow. If the vortex develops to extend downward in this way, the bubbles will return to the large vortex chamber again and impede the self-priming action, so it is necessary to prevent this.
  • the mushroom-like mass can prevent the development of the vortex, but the water is pumped.
  • the mushroom-like mass obstructs the flow of water, and the cross-sectional area of the portion where the mushroom-like mass is provided and the portion past the mushroom-like mass (the swirl-forming space) change sharply and greatly. Therefore, there was a problem that the water flow was disturbed and the pumping performance became unstable.
  • the air from the suction pipe is expelled while circulating the self-priming liquid in the casing, so that the self-priming liquid must be always stored in the casing.
  • the trap since the trap has a straight tubular shape, a siphon effect is likely to occur, and the siphon effect causes water (liquid) to flow back into the suction pipe from inside the casing, preventing self-priming liquid from being collected. To prevent this, a large difference between the high and low levels, in which the trap inlet is higher than the trap outlet, is provided. Need to be specified. As a result, there is a problem that the pumping load becomes large, the self-priming time is long, and the pump capacity must be increased.
  • the present invention has been made in order to solve the above-mentioned conventional problems, and therefore, it is possible to prevent the development of a vortex during the self-priming operation and to ensure a smooth flow of the water flow during the pumping operation.
  • the first task is to provide a self-priming pump as described above.
  • the suction side structure should be compact and the pumping load should be small to reduce the self-priming time without increasing the pumping capacity.Also, the self-priming liquid should remain in the casing when the pump stops. The second issue is to provide a self-priming pump that can perform the above-mentioned steps. Disclosure of the invention
  • a large spiral chamber and a small spiral chamber are formed around the impeller, a water outlet is formed at the upper end of the main pipe extending from the large spiral chamber, and a water outlet is formed at the upper end of the sub-pipe extending from the small spiral chamber.
  • the vortex disappears in the main conduit below the vortex formation space
  • the plate member is provided so as to extend in the direction in which the main pipeline extends.
  • This self-priming pump is characterized in that a plate member is provided below the vortex forming space as a means for eliminating the vortex during the self-priming operation.
  • the plate member is provided below the vortex flow forming space, if the vortex generated in the vortex flow forming space extends downward, the vortex will be blocked by the surface of the plate member, and thus will extend downward. Eddy current can be extinguished.
  • the plate member is provided to extend in the direction of extension of the main pipeline, the provision of the plate member does not hinder the flow of water during the pumping operation, and the portion where the plate member is provided. In the area past the plate member (the vortex flow forming space), only the cross-sectional area of the plate member changes in thickness, so that the water flow is not disturbed and the pumping performance becomes unstable. None.
  • a self-priming water reservoir is provided between the suction port of the casing and the suction pipe, and the water reservoir swells in the left-right direction and has a stagnant portion formed to have a cross-sectional area larger than the opening area of the suction port;
  • a water storage outlet that opens laterally at the bottom end of the stagnant portion and communicates almost horizontally with the suction port, and a water inlet that opens laterally at the upper end of the stagnant portion and communicates with the suction pipe, The lower level of the water inlet was formed higher than the upper level of the water outlet.
  • the stagnant part of the water reservoir expands in the left-right direction.
  • the self-priming liquid can be stored only in the retaining portion, and the self-priming liquid can be reliably retained in the casing when the pump is stopped.
  • FIG. 1 is an axial sectional view showing a main part of a self-priming pump according to one embodiment of the present invention.
  • FIG. 2 is a side sectional view showing a casing of the self-priming pump.
  • FIG. 3 is a sectional view taken along line AA of FIG.
  • FIG. 4 is a sectional view taken along line BB of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is an axial sectional view showing a main part of a self-priming pump according to one embodiment of the present invention
  • FIG. 2 is a side sectional view showing a casing of the self-priming pump
  • FIG. A sectional view and FIG. 4 is a BB sectional view of FIG.
  • reference numeral 1 denotes a casing, which accommodates an impeller 2 therein.
  • a large spiral chamber 10 and a small spiral chamber 11 are formed around the impeller 2.
  • a main conduit extending from the large spiral chamber 10 A water discharge port 13 is formed at the upper end of a small spiral chamber 11 so that the upper end of a sub-pipe 14 extending from a small spiral chamber communicates with the main pipe 12 in a spiral form from the tangential direction along the wall surface. Is formed.
  • the self-priming water collected in the casing 1 at the time of the self-priming operation is discharged together with air from the small volute chamber 11 to the main line 12 through the sub-line 14 so that the main line 12 is discharged.
  • a vortex forming space 15 for generating a vortex to separate water and water is formed, and a plate member 16 for eliminating the vortex is provided below the vortex forming space 15 as shown in FIG. It is provided to extend in the direction of extension.
  • a suction port 17 is formed in the center of one side surface of the casing 1, and a self-priming water reservoir 4 is provided between the suction port 17 and the suction pipe 3.
  • the water reservoir 4 swells in the left-right direction and has a stagnation portion 40 formed to have a larger cross-sectional area than the opening area of the suction port 17, and has a laterally extending bottom end portion of the stagnation portion 40.
  • a water storage outlet 41 that opens to the outside and communicates with the suction port 17 almost horizontally, and a water storage inlet 42 that opens horizontally at the upper end of the retaining section 40 and communicates with the suction pipe 3.
  • the lower end level L1 of the water storage inlet 42 above the upper end level L2 of the water storage outlet 41, water is collected up to the lower end level L1 of the water storage inlet 42, and the casing 1
  • the inside is filled with self-priming water.
  • An impeller shaft 20 is pivotally supported at the center of the other side surface of the casing 1, and the impeller shaft 20 is connected to a drive motor (not shown).
  • the self-priming liquid merges from the small vortex chamber 11 through the sub-line 14 to the main line 12, and from the main line 12, the large vortex chamber 1 A circulating flow is returned, returning to 0 and flowing again from the small spiral chamber 11 to the sub-pipe 14. At this time, a vortex is generated in the vortex flow forming space 15, and water-water separation is performed by the centrifugal separation effect of the vortex.
  • the plate member 16 is provided below the vortex formation space 15, so that the vortex is generated by the plate member 16. In this way, the eddy current extending downward can be eliminated. Further, since the plate member 16 is provided to extend in the direction in which the main pipeline 12 extends, the provision of the plate member 16 does not hinder the water flow during the pumping operation. In the portion where the member 16 is provided and the portion past the plate member 16 (the vortex flow forming space 15), since the cross-sectional area only changes by the plate thickness of the plate member 16, the turbulence in the water flow is reduced. The pumping performance has never been unstable.
  • the self-priming pump as described above, when the self-priming operation is performed, the air from the suction pipe 3 is expelled while circulating the self-priming liquid in the casing 1, so that the self-priming pump is always provided in the casing 1. It is necessary to store the liquid absorption.
  • the stagnant portion 40 of the water reservoir 4 is formed by swelling in the left and right direction. Since the stagnant portion 40 alone can store the necessary self-priming liquid, The self-priming liquid can be reliably retained in the casing 1 when the pump is stopped. In addition, since the necessary self-priming liquid can be stored only in the retaining section 40, the total length does not need to be increased, and the outflow port (water storage port 41) and the inflow port (water storage port 42) are not required. Since there is no need to set a large level difference between the two, the size of the suction side structure can be reduced, and the pumping load can be reduced.
  • the water reservoir 4 may be formed integrally with the casing 1. Industrial applicability
  • the vortex flow can be prevented from developing during the self-priming operation, and the water flow can be smooth during the pumping operation. The effect that the flow can be secured is obtained.
  • the suction-side structure can be made compact, and the self-priming time can be shortened without increasing the pump capacity. Further, an effect is obtained that the self-priming liquid can be reliably retained in the casing when the pump is stopped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une pompe à auto-amorçage pouvant empêcher un flux tourbillonnant de se développer pendant l'auto-amorçage et assurer un écoulement sans à-coups du courant pendant le pompage. Dans la conduite principale est formé un espace (15) de formation de flux tourbillonnant, qui permet à l'eau d'auto-amorçage accumulée dans un carter (1) d'être déchargée avec l'air, à partir d'un petit carter en volute (11) pour aller à une conduite principale (12), en passant par une conduite auxiliaire (14), pendant l'auto-amorçage, pour produire un flux tourbillonnant dans la conduite principale, et ainsi provoquer la séparation de l'eau. Une plaque (16) servant à éliminer le flux tourbillonnant est montée dans la conduite principale, sous l'espace de formation de flux tourbillonnant, et s'étend dans le sens de ladite conduite principale.
PCT/JP2001/005861 2000-07-06 2001-07-05 Pompe a auto-amorçage WO2002004815A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000205365A JP2002021761A (ja) 2000-07-06 2000-07-06 自吸式ポンプ
JP2000-205365 2000-07-06

Publications (1)

Publication Number Publication Date
WO2002004815A1 true WO2002004815A1 (fr) 2002-01-17

Family

ID=18702466

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/005861 WO2002004815A1 (fr) 2000-07-06 2001-07-05 Pompe a auto-amorçage

Country Status (3)

Country Link
US (1) US20030165380A1 (fr)
JP (1) JP2002021761A (fr)
WO (1) WO2002004815A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4562088B2 (ja) * 2005-08-15 2010-10-13 株式会社電業社機械製作所 自吸式ポンプ
JP4819621B2 (ja) * 2006-08-30 2011-11-24 西垣ポンプ製造株式会社 非容積形ポンプ
JP4819620B2 (ja) * 2006-08-30 2011-11-24 西垣ポンプ製造株式会社 自吸式ポンプ
JP5318501B2 (ja) * 2008-08-29 2013-10-16 株式会社荏原製作所 自吸ポンプおよびケーシング組立体の形成方法
WO2011017708A1 (fr) * 2009-08-07 2011-02-10 Sta-Rite Industries, Llc Système d'orifices pour le fonctionnement à sec
KR101414985B1 (ko) 2013-10-14 2014-07-04 (주)옥원산업 염색기의 메인펌프
CN108223387B (zh) * 2018-01-23 2020-09-04 宁波沃力科技有限公司 一种低噪音旋涡泵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB836945A (en) * 1957-12-16 1960-06-09 Worthington Corp Self-priming centrifugal pump
JPS6371490U (fr) * 1986-10-28 1988-05-13
JPS6480795A (en) * 1987-09-21 1989-03-27 Ogihara Seisakusho Kk Self-priming pump
JPH0626487A (ja) * 1992-07-07 1994-02-01 Terada Pump Seisakusho:Kk 自吸式うず巻ポンプ
JPH06280778A (ja) * 1993-03-30 1994-10-04 Yokota Giken:Kk 自吸式遠心ポンプ装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125030A (en) * 1964-03-17 Selfpriming centrifugal pump
US3163120A (en) * 1962-05-18 1964-12-29 Cascade Mfg Company Self-priming axial-flow pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB836945A (en) * 1957-12-16 1960-06-09 Worthington Corp Self-priming centrifugal pump
JPS6371490U (fr) * 1986-10-28 1988-05-13
JPS6480795A (en) * 1987-09-21 1989-03-27 Ogihara Seisakusho Kk Self-priming pump
JPH0626487A (ja) * 1992-07-07 1994-02-01 Terada Pump Seisakusho:Kk 自吸式うず巻ポンプ
JPH06280778A (ja) * 1993-03-30 1994-10-04 Yokota Giken:Kk 自吸式遠心ポンプ装置

Also Published As

Publication number Publication date
US20030165380A1 (en) 2003-09-04
JP2002021761A (ja) 2002-01-23

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