KR101405433B1 - Double Suction Water Pump - Google Patents

Double Suction Water Pump Download PDF

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Publication number
KR101405433B1
KR101405433B1 KR1020140009116A KR20140009116A KR101405433B1 KR 101405433 B1 KR101405433 B1 KR 101405433B1 KR 1020140009116 A KR1020140009116 A KR 1020140009116A KR 20140009116 A KR20140009116 A KR 20140009116A KR 101405433 B1 KR101405433 B1 KR 101405433B1
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KR
South Korea
Prior art keywords
fluid
flow path
suction
casing
impeller
Prior art date
Application number
KR1020140009116A
Other languages
Korean (ko)
Inventor
오재경
오성현
Original Assignee
(주)지천펌프공업
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Filing date
Publication date
Application filed by (주)지천펌프공업 filed Critical (주)지천펌프공업
Priority to KR1020140009116A priority Critical patent/KR101405433B1/en
Application granted granted Critical
Publication of KR101405433B1 publication Critical patent/KR101405433B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a double-suction water pump capable of increasing the efficiency of a pump by discharging fluid through upper and lower portions of an impeller, A casing having a first inlet portion through which the fluid is sucked and a second inlet portion through which the fluid is sucked into the other portion and a discharge portion through which the sucked fluid is discharged and an impeller provided inside the casing for sucking and discharging the fluid, And an impeller housing having a first flow path and a second flow path for guiding the fluid introduced into the first inflow section and the second inflow section to the discharge section, respectively.
According to the double suction in-water submersible pump of the present invention, the fluid is introduced into the upper and lower portions of the impeller constituting the submersible pump and then discharged to the discharge portion through the respective flow passages, so that the inflow fluid is discharged at a high speed without collision with each other, Can be increased.

Description

Double Suction Water Pump < RTI ID = 0.0 >

More particularly, the present invention relates to a double suction pump, and more particularly, to a dual suction pump, in which a fluid is introduced into an upper portion and a lower portion of an impeller and then discharged through a respective flow passage, Gt; pump < / RTI >

Generally, a pump is a device for sucking and discharging a fluid by using a centrifugal force generated by rotation of an impeller installed in a casing and rotating the impeller, and is widely used for water supply or drainage.

These pumps are distinguished by a single suction pump and a dual suction pump, along the face of the impeller sucking the fluid.

The single suction pump is a pump that sucks fluid only from one side of the impeller and is used for a relatively small installation because the amount of fluid suction is small. The double suction pump is a pump for sucking fluid from both sides of the impeller, It can be sucked in fluids and used in large-scale facilities.

Particularly, since the double suction pump is widely used in a large facility having a large suction amount for sucking fluid, the impeller is rotated at a high speed and a large force to generate a large amount of frictional heat in the rotary shaft. Therefore, .

However, the conventional double suction pump has a problem in that the flow of fluid is reduced due to the pressure being canceled due to the collision of the fluids flowing from both sides, thereby reducing the discharge efficiency of the pump.

Korean Patent Laid-Open Publication No. 10-2013-0138505

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide an impeller for an underwater pump which is capable of discharging a fluid into an upper portion and a lower portion of an impeller, So that the efficiency of the pump can be increased.

According to an aspect of the present invention, there is provided a double-suction submersible pump comprising: a casing having a first inlet portion through which fluid is sucked into one side and a second inlet portion through which fluid is sucked into the other side; And an impeller housing provided inside the casing and having an impeller for sucking and discharging the fluid and having a first flow path and a second flow path for guiding the fluid introduced into the first inflow portion and the second inflow portion to the discharge portion, .

The casing is provided with a guide bracket extending in the longitudinal direction at an upper portion thereof, and a first inlet portion is formed through the guide bracket in the width direction, A lower portion of the casing is provided with a stand supported on the ground, and a second inlet portion may be formed through the stand in a width direction.

A suction cone tapered downward may be provided on the inner side of the guide bracket.

A guide groove recessed inward in the width direction may be formed on the tapered inclined surface of the suction cone.

A gap may be formed between the end of the first flow path and the end of the second flow path.

A plate-shaped separator plate protruding toward the impeller housing may be formed on an inner side in the width direction of the casing.

The end of the separator plate may extend between the end of the first flow path of the impeller housing and the end of the second flow path.

The separation plate and the discharge unit may be provided so as to face each other.

An oil seal or an O-ring may be provided between the inside of the casing and the upper and lower surfaces of the impeller housing.

As described above, according to the double suction in-water submersible pump of the present invention, the fluid is introduced into the upper and lower portions of the impeller constituting the underwater pump and then discharged to the discharge portion through the respective flow passages, So that the efficiency of the pump can be increased.

1 is a cross-sectional view showing a double-suction water pump according to an embodiment of the present invention,
FIG. 2 is an exemplary view showing a flow of fluid in a double-suction water pump according to an embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the present invention.

In FIG. 1, the horizontal direction will be referred to as 'width direction' and the vertical direction as 'length direction'.

FIG. 1 is a cross-sectional view illustrating a double-suction water pump according to one embodiment of the present invention, and FIG. 2 is an exemplary view showing a flow of fluid in a double-suction water pump according to an embodiment of the present invention.

1, a double suction pump according to an embodiment of the present invention includes a driving unit 100, a bearing housing 200, a guide bracket 300, a casing 500, an impeller housing 600, (700).

The casing 500 is stacked on the stand 700 and the lower part is fastened to the stand 700.

A guide bracket 300 is stacked and fastened to the upper part of the casing 500. A bearing housing 200 is stacked and fastened to the upper portion of the guide bracket 300. A driving part 100 Are laminated and fastened.

The driving unit 100 includes a stator 130, a rotor 150 rotated by the action of the stator 130, a motor shaft 170 provided in the rotor 150, and a motor frame 110 .

The stator 130 and the rotor 150 are disposed inside the motor frame 110.

The motor frame 110 may be formed in a hollow cylindrical shape as a whole, and upper and lower portions may be formed thicker than the central portion.

The lower portion of the motor frame 110 is fastened to the bearing housing 200 with fastening bolts.

An upper bearing B1 for supporting the upper end of the motor shaft 170 is installed on the upper surface of the motor frame 110.

In addition, a power cable P for supplying power to the driving unit 100 is installed on the upper side of the motor frame 110.

The bearing housing 200 is provided with a lower bearing B2 for supporting the motor shaft 170 of the driving unit 100. [

A lower bearing cover 210, which prevents the lower bearing B2 from being detached, is fastened between the driving part 100 and the bearing housing 200 with fastening bolts.

And a roller bearing B3 for supporting the motor shaft 170 of the driving unit 100 is installed below the lower bearing B2.

A roller bearing cover (230) for preventing the roller bearing (B3) from being detached is fastened between the guide bracket (300) and the bearing housing (200) by fastening bolts.

The guide bracket 300 extends downward in the longitudinal direction and has a first inlet 350 through which the fluid flows.

The first inlet 350 may be formed in plural in the circumferential direction.

A suction cone 400 tapered downward is provided on the inside of the guide bracket 300.

The suction cone 400 is closely attached to the inner upper end of the guide bracket 300 while allowing the motor shaft 170, which is inserted through the guide bracket 300 in the longitudinal direction, to pass therethrough.

A mechanical seal 450 is provided between the suction cone 400 and the motor shaft 170.

On the tapered inclined surface of the suction cone 400, a guide groove 410 recessed inward in the width direction is formed.

The casing 500 includes an impeller housing 600 enclosing an impeller (not shown) and a discharge unit 800 protruding outward in the width direction from the impeller housing 600.

A connection pipe such as an elbow pipe for guiding the fluid passing through the casing 500 to the outside is connected to the discharge part 800.

A space portion provided with a plate-shaped separator plate 550 is formed on the other side in the width direction of the casing 500.

The separator plate 550 protrudes from the widthwise inner side of the casing 500 toward the impeller housing 600.

The end of the separator plate 550 extends between the end of the first flow path 610 and the end of the second flow path 650 of the impeller housing 600 described later.

The separator plate 550 and the discharge unit 800 are provided at positions facing each other.

Shaft through holes are formed in the bearing housing 200, the guide bracket 300, the suction cone 400, the casing 500, and the impeller housing 600 so that the motor shaft 170 passes through the shaft in the longitudinal direction.

The lower end of the motor shaft 170 is coupled to the lower end of the casing 500 through the impeller cap 690.

The stand 700 is provided at a lower portion of the casing 500 and is supported on the ground. The stand 700 is penetrated in the width direction to form the second inlet portion 750.

The second inlet 750 may be formed in a plurality of circumferential directions.

The impeller housing 600 is provided with a first flow path 610 for guiding the fluid introduced into the first inflow part 350 to the discharge part 800 and a fluid introduced into the second inflow part 750 And a second flow path 650 for guiding the fluid to the discharge part 800 are formed.

The first flow path 610 extends radially from the top to the bottom and the second flow path 650 extends radially from the bottom to the top.

The first flow path 610 and the second flow path 650 may be provided symmetrically with respect to each other.

A gap 630 is formed between the end of the first flow path 610 and the end of the second flow path 650.

An oil seal or an O-ring is provided at an upper portion of the impeller housing 600 closely fitted to the inner upper portion of the casing 500 and at a lower portion of the impeller housing 600 closely attached to the inner lower portion of the casing 500.

The double-suction submerged pump according to the present invention constructed as described above operates as follows.

When the power is applied to the driving unit 100, the rotor 150 is rotated together with the motor shaft 170 by the action of the stator 130, and the motor shaft 170 is installed in the impeller housing 600 Thereby rotating the impeller.

2, the water flows into the impeller housing 600 of the casing 500 through the first inlet 350 and then flows into the impeller housing 600 through the second inlet 750 And is sucked into the impeller housing 600 of the casing 500.

When the water flows into the first inlet portion 350, the resistance of the water colliding with the suction cone 400 is reduced by the guide groove 410 formed in the suction cone 400, have.

The water drawn into the impeller housing 600 is discharged by the impeller to the discharge unit 800. At this time, the water introduced into the first inlet unit 350 flows into the first passage 610 of the impeller housing 600 And the water introduced into the second inlet portion 750 is discharged to the outlet portion 800 through the second flow path 650 of the impeller housing 600.

At this time, the water introduced through the first flow path 610 and the water introduced through the second flow path 650 can be gathered in the space part formed at the other side of the impeller housing 600. By the separation plate 550, The water introduced through the first flow path 610 and the water introduced through the second flow path 650 can maintain the respective flow paths even if they are gathered at the space portion formed at the other side of the impeller housing 600.

The water introduced through the first inlet portion 350 is discharged to the discharge portion 800 through the first flow path 610 and the water introduced through the second inlet portion 750 flows into the second The water introduced into the first inflow portion 350 and the water introduced into the second inflow portion 750 are discharged without being combined with each other, Or the loss of pressure is prevented, resulting in an increase in pump efficiency.

Similarly, even if water is collected through the first flow path 610 and the second flow path 650 to the space portion formed at the other side of the impeller housing 600, the flow path is maintained by the separation plate 550 without being combined with each other, .

In addition, as the impeller rotates, the pressure of the underwater pump is increased to reduce the pump efficiency. The pump pressure loss is blocked by the oil seal or O-ring provided between the impeller housing 600 and the casing 500 The reduction of the efficiency of the pump can be minimized.

The water discharged to the discharge portion 800 through the impeller housing 600 is discharged to the outside through a connection pipe connected to the discharge portion 800.

As described above, according to the double suction in-water submersible pump of the present invention, the fluid is introduced into the upper and lower portions of the impeller constituting the underwater pump and then discharged to the discharge portion through the respective flow passages, So that the efficiency of the pump can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It will be readily apparent that various substitutions, modifications, and alterations can be made herein.

350: first inlet part 500: casing
600: impeller housing 610: first flow path
650: second flow path 750: second inflow part
800:

Claims (9)

A casing 500 having a first inlet 350 through which a fluid is sucked to one side, a second inlet 750 through which fluid is sucked to the other side, and a discharge unit 800 through which the sucked fluid is discharged; And
The fluid introduced into the first inlet portion 350 and the second inlet portion 750 is guided to the outlet portion 800 by a guide (not shown) And an impeller housing 600 having a first flow path 610 and a second flow path 650 formed thereon,
The casing 500 is provided at its upper portion with a guide bracket 300 extending in the longitudinal direction and a first inlet 350 is formed through the guide bracket 300 in the width direction. Wherein the stand (700) is supported at the bottom of the casing (500) and the second inlet (750) is formed through the stand (700) in the width direction. delete The dual suction pump according to claim 1, wherein the guide bracket (300) is provided at its inner side with a suction cone (400) tapered downward. [4] The dual-suction underwater pump according to claim 3, wherein a guide groove (410) is formed in the tapered inclined surface of the suction cone (400). The double-suction underwater pump according to claim 1, wherein a gap (630) is formed between an end of the first flow path (610) and an end of the second flow path (650). The double suction in-water submersible pump according to claim 1, wherein a plate-like separator plate (550) protruding toward the impeller housing (600) is formed inside the casing (500) in the width direction. The impeller according to claim 6, wherein an end of the separator plate (550) extends between an end of the first flow path (610) of the impeller housing (600) and an end of the second flow path (650) Pump. The dual-suction underwater pump according to claim 6, wherein the separation plate (550) and the discharge portion (800) are provided so as to face each other. The double-suction water pump according to claim 1, wherein an oil seal or an O-ring is provided between the inside of the casing (500) and the upper and lower surfaces of the impeller housing (600).
KR1020140009116A 2014-01-24 2014-01-24 Double Suction Water Pump KR101405433B1 (en)

Priority Applications (1)

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KR1020140009116A KR101405433B1 (en) 2014-01-24 2014-01-24 Double Suction Water Pump

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101898504B1 (en) * 2018-01-25 2018-09-13 이남 Spurt pump having double suction type impeller
CN110486292A (en) * 2019-08-07 2019-11-22 林军永 A kind of double-suction type immersible pump
KR102077627B1 (en) * 2019-04-26 2020-02-14 엔에스하이드로(주) High head submersible pump
WO2022116597A1 (en) * 2020-12-03 2022-06-09 大福泵业有限公司 Axial double-suction submersible electric pump
KR102574065B1 (en) * 2023-01-26 2023-09-05 (유)한성산기 Vibration reduction pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002332983A (en) 2001-05-11 2002-11-22 Kubota Corp Pull-out type vertical shaft double-suction volute pump
JP2007051551A (en) 2005-08-15 2007-03-01 Hitachi Plant Technologies Ltd Double suction volute pump
JP2011140917A (en) 2010-01-08 2011-07-21 Torishima Pump Mfg Co Ltd Double suction pump
KR20120102602A (en) * 2009-09-28 2012-09-18 가부시키가이샤 에바라 세이사꾸쇼 Anti-vortex device and double-suction vertical pump provided with the anti-vortex device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002332983A (en) 2001-05-11 2002-11-22 Kubota Corp Pull-out type vertical shaft double-suction volute pump
JP2007051551A (en) 2005-08-15 2007-03-01 Hitachi Plant Technologies Ltd Double suction volute pump
KR20120102602A (en) * 2009-09-28 2012-09-18 가부시키가이샤 에바라 세이사꾸쇼 Anti-vortex device and double-suction vertical pump provided with the anti-vortex device
JP2011140917A (en) 2010-01-08 2011-07-21 Torishima Pump Mfg Co Ltd Double suction pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101898504B1 (en) * 2018-01-25 2018-09-13 이남 Spurt pump having double suction type impeller
KR102077627B1 (en) * 2019-04-26 2020-02-14 엔에스하이드로(주) High head submersible pump
CN110486292A (en) * 2019-08-07 2019-11-22 林军永 A kind of double-suction type immersible pump
WO2022116597A1 (en) * 2020-12-03 2022-06-09 大福泵业有限公司 Axial double-suction submersible electric pump
KR102574065B1 (en) * 2023-01-26 2023-09-05 (유)한성산기 Vibration reduction pump
KR102627725B1 (en) * 2023-01-26 2024-01-23 (유)한성산기 Vibration reduction pump

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