KR101487435B1 - A clearance with rhe pump - Google Patents

A clearance with rhe pump Download PDF

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Publication number
KR101487435B1
KR101487435B1 KR20140079560A KR20140079560A KR101487435B1 KR 101487435 B1 KR101487435 B1 KR 101487435B1 KR 20140079560 A KR20140079560 A KR 20140079560A KR 20140079560 A KR20140079560 A KR 20140079560A KR 101487435 B1 KR101487435 B1 KR 101487435B1
Authority
KR
South Korea
Prior art keywords
pump
gap
impeller housing
impeller
bolt
Prior art date
Application number
KR20140079560A
Other languages
Korean (ko)
Inventor
신현욱
Original Assignee
한국그런포스펌프(주)
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 한국그런포스펌프(주) filed Critical 한국그런포스펌프(주)
Priority to KR20140079560A priority Critical patent/KR101487435B1/en
Application granted granted Critical
Publication of KR101487435B1 publication Critical patent/KR101487435B1/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
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0033—By-passing by increasing clearance between impeller and its casing
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • 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
    • F05D2260/60—Fluid transfer
    • 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

Abstract

The present invention provides a pump comprising: a pump body provided with a motor for driving the pump; An impeller housing surrounding an impeller rotatable by driving the motor and having an inlet and an outlet through which fluid is introduced and discharged; And a gap adjusting unit formed integrally with the impeller housing and slidably moving toward the pump body when a gap is formed between the impeller housing and the impeller housing to adjust the gap; A pump is disclosed.

Description

[0001] The present invention relates to a pump including a clearance adjusting unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pump including a clearance adjusting part, and more particularly to a pump including a clearance adjusting part with improved pumping efficiency.

A pump is a device used to move liquids or slurries and is a device that moves liquid from low pressure to higher pressure

. In the case of a pump using electricity as a power source, the pump includes a motor for generating a driving force by using electricity, an impeller for directly moving liquid while rotating by a driving force of the motor, and an impeller housing for enclosing the impeller.

Further, the pump is adjacent to the impeller and further includes an inlet through which the fluid flows into the pump and an outlet through which the introduced fluid is discharged. However, in the course of the movement of the fluid introduced into the inlet, a gap is formed between the impeller and the impeller housing. That is, the surface of the impeller is worn by the strong pumping force of the pump, and a gap is generated between the impeller housing and the bottom of the impeller.

The clearance thus generated is a space in which the fluid can not be discharged to the discharge port and remains. Accordingly, although the pump is sufficiently pumped, the fluid can not be completely discharged due to the gap, and thus the pumping efficiency of the pump is lowered.

Also, friction between the fluid and the surface of the impeller continues during use of the pump. Therefore, since the size of the gap increases during use of the pump, the life of the pump is reduced.

SUMMARY OF THE INVENTION An embodiment of the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a pump including a clearance adjusting part capable of improving pump pumping reliability.

In order to solve the above problems, an embodiment of the present invention provides a pump comprising: a pump body having a motor for driving the pump; An impeller housing surrounding an impeller rotatable by driving the motor and having an inlet and an outlet through which fluid is introduced and discharged; And a gap adjusting unit formed integrally with the impeller housing and slidably moving toward the pump body when a gap is formed between the impeller housing and the impeller housing to adjust the gap; And a clearance adjusting portion including a clearance adjusting portion.

The clearance adjusting unit is exposed to the outside of the pump body, and at least one bolt is mounted to adjust the clearance.

In this case, the pump body further includes a mounting portion for mounting the bolt facing the gap adjusting portion.

Meanwhile, when a gap is formed between the impeller housing and the impeller housing to prevent leakage of the fluid introduced into the impeller housing, the seal unit slides along with the gap adjustment unit .

At this time, the sealing portion further includes a coupling portion to which the bolt is mounted, the coupling portion being engaged with the mounting portion.

And a measurement unit electrically connected to the pump body and measuring whether the gap is generated according to a predetermined set value.

According to another aspect of the present invention, there is provided a pump including a gap adjusting unit, the pump including: a pump body having a motor for driving the pump; An impeller housing surrounding an impeller rotatable by driving the motor and having an inlet and an outlet through which fluid is introduced and discharged; And a slider which is engaged with the impeller housing adjacent to the inlet port and is slidable in the impeller housing toward the pump body. When a gap is generated between the impeller housing and the impeller housing, And adjusting wear.

The wear ring further includes a protrusion protruding from an outer wall of the wear ring, and at least one bolt is mounted on the protrusion to adjust the gap.

In this case, the impeller housing further includes a bolt mounting portion to which the bolt is mounted, the bolt mounting portion being engaged with the protruding portion.

The pump further includes a sealing part mounted between the impeller housing and the end of the wear ring adjacent to the pump body, for preventing leakage of the fluid introduced into the impeller housing.

The apparatus further includes a measurement unit electrically connected to the pump body and measuring whether the gap is formed according to a predetermined set value.

As described above, according to the present invention, various effects including the following can be expected. However, the present invention does not necessarily achieve the following effects.

The pump including the gap adjusting portion of the embodiment of the present invention reduces the gap generated between the worn impeller and the impeller housing by friction between the surface of the impeller provided in the pump and the fluid introduced by driving the pump, It is possible to prevent the formation of a space in which the inflow fluid remains, thereby preventing the fluid from remaining in the pump and preventing the pumping efficiency of the pump from being lowered.

In addition, while the pump is being used, there is an effect that the pumping efficiency of the pump can be kept constant until the lifetime of the pump is restored by restoring the gap generated between the impeller and the impeller housing of the pump.

1 is a perspective view showing a pump of an embodiment of the present invention,
Fig. 2 is a cross-sectional view taken along the line II-II in Fig. 1,
FIG. 3 is a view showing an operation example of the pump of FIG. 1,
4 is data according to the pumping efficiency of the pump of the embodiment of the present invention,
5 is a perspective view showing a pump of another embodiment of the present invention,
Fig. 6 is a view showing an operation example of the pump of Fig. 5;

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a pump of an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, FIG. 3 is a view showing an operation example of the pump of FIG. 1, Of the pump according to the embodiment of the present invention.

As shown in these drawings, the pump 10 of the embodiment of the present invention includes a pump main body 100 provided with a motor 140 for driving the pump 10, An impeller housing 200 in which an inlet 220 and an outlet 240 are formed to enclose the impeller 260 and the inlet and the outlet are formed and the impeller 260 are integrally formed with the impeller housing 200 and the impeller 260 and the impeller housing 200 And a gap adjustment unit 300 that slides in the direction of the pump body to adjust the gap G when a gap is generated between the pump body and the pump body.

The pump main body 100 is connected to a plurality of power sources for driving the pump 10, and the power source is connected to the motor 140 to provide a driving force to the motor 140. A rotating shaft 120 coupled to the impeller 260 is mounted at the center of the motor 140 so that the rotating shaft 120 is rotated by driving the motor 140 so that the fluid flows out to the pump 10 .

The impeller housing 200 may be integrally formed with the pump body 100, and a pipe 290 is mounted to allow the fluid discharged from the discharge port 240 to move.

A gap G may be formed between the impeller housing 200 and the impeller 260 during the flow of the fluid. This is because the fluid flowing into the pump 10 collides with the lower portion of the impeller 260 and the lower portion of the impeller 260 is worn. When the clearance G is generated between the impeller housing 200 and the impeller 260 as described above, the fluid remains in the clearance G and the pumping efficiency of the pump 10 is lowered. In order to compensate for this, a gap adjustment unit 300 is provided in the pump 10 to adjust the clearance G.

The gap adjustment part 300 may be integrally formed with the impeller housing 200 and may extend from the upper end of the impeller housing 200 toward the pump body 100, for example. In particular, the clearance adjusting part 300 may be provided outside the pump body 100. The clearance adjusting part 300 is formed to be exposed to the outside of the pump body 100 in order to easily control the clearance G between the impeller 260 and the impeller housing 200 to be described later.

The gap adjustment part 300 can slide due to the occurrence of the gap G. Illustratively, the gap adjusting part 300 is slidable up and down, and when the gap G is generated between the impeller housing 200 and the impeller 260, the gap adjusting part 300 is slid upward The gap G can be restored.

The clearance adjusting part 300 can adjust the clearance G generated by mounting at least one bolt 320. 3, before the gap G is generated between the impeller housing 200 and the impeller 260 (see FIG. 3A), the bolt 320 is inserted into the gap adjusting portion 200, (300).

3 (b)). When the gap (G) is generated between the impeller housing 200 and the impeller 260 by driving the pump 10, the bolt 320 is tightened to the gap adjusting part 300 (Fig. 3 (a)) before the clearance G is generated (Fig. 3 (c)).

The pump body 100 further includes a mounting portion 160 on which the bolt 320 is mounted to face the gap adjusting portion 300. The mounting portion 160 sets a maximum restoration value capable of restoring the gap G generated in the pump 10.

2 and 3, before the gap G is generated between the impeller 260 and the impeller housing 200 (FIG. 3 (a)), the gap between the mounting portion 160 and the gap- (S) is formed between the first and second substrates (300). 3 (b)), the clearance S is slid and the clearance G is restored (see FIG. 3 (b)) when the clearance G is generated between the impeller 260 and the impeller housing 200 Space. The interval S is set in advance, and the width of the interval S set in accordance with the specification of the pump 10 can be changed.

The pump 10 is interposed between the pump main body 100 and the impeller housing 200 to prevent the fluid flowing into the impeller housing 200 from leaking and to prevent leakage of the fluid between the impeller housing 200 and the impeller 260. [ And further includes a sealing part 180 slidable together with the gap adjusting part 300 when the gap G is generated.

The sealing portion 180 further includes a coupling portion 182 to be engaged with the mounting portion 160 of the pump body 100 and to which the bolt 320 is mounted. As the sealing part 180 slides together with the gap adjusting part 300 and the coupling part 182 is interposed between the mounting part 160 of the pump body 100 and the gap adjusting part 300, It is possible to maintain the sealing between the pump main body 100 and the impeller housing 200 by sliding the gap adjusting part 300 and to prevent the fluid from leaking between the mounting part 160 and the gap adjusting part 300 do.

The present invention further includes a measuring unit (not shown) electrically connected to the pump main body 100 and measuring whether the gap G is generated according to a predetermined set value.

In the measuring section, for example, the measuring section may show the surface area of the impeller 260. At this time, the operator judges that the clearance G is generated according to the change of the surface area of the impeller 260 shown in the measuring part, and tightens the bolt 320 to restore the clearance G.

Thus, the gap G formed between the impeller 260 of the pump 10 and the impeller housing 200 can be restored and the pumping efficiency of the pump 10 can be maintained constant. That is, referring to FIG. 4, it can be seen that the pumping efficiency of the conventional pump is continuously lowered over time (data B). On the other hand, the pump 10 of the present embodiment recovers the gap 280 generated between the impeller 260 and the inlet 220, thereby increasing the pumping efficiency of the pump 10 again (data A) Is improved.

FIG. 5 is a perspective view illustrating a pump of another embodiment of the present invention, and FIG. 6 is a view illustrating an operation example of the pump of FIG.

Before describing the drawings, it is assumed that the same reference numerals as those shown in FIGS. 1 to 4 denote the same components, and a detailed description thereof will be omitted.

In addition, the pump 10A according to another embodiment of the present invention may be mounted externally and includes a mounting portion 1300 for this purpose.

A pump 10A according to another embodiment of the present invention includes a pump body 1100 provided with a motor (not shown) for driving the pump 10A, an impeller 1260 rotatable by driving the motor, An impeller housing 1200 having an inlet 1220 and an outlet 1240 through which fluids are introduced and discharged and an impeller housing 1200 adjacent to the inlet 1220. In the impeller housing 1200, When the gap G is generated between the impeller 1260 and the impeller housing 1200 by sliding in the direction of the main body 1100 and sliding in the direction of the pump main body 1100 to adjust the gap G, 1400).

The wear ring 1400 is formed to enclose the impeller 1260 and is provided with at least one bolt 1420 for mounting the impeller 1260 in order to adjust the clearance G generated between the impeller housing 1200 and the impeller 1260. [ (1440).

The impeller housing 1200 corresponds to the protrusion 1440 and a bolt mounting portion 1280 is formed to mount the bolt 1420. The bolt mounting part 1280 is formed to protrude from the outer side of the impeller housing 1200 and is spaced apart from the protruding part 1440 by a predetermined distance S before a gap G is generated between the impeller housing 1200 and the impeller 1260. [ (FIG. 6 (a)).

6 (b)), the bolts 1420 mounted on the protrusions 1440 are tightened so that the protrusions 1440 and the bolt mounting portions 1440 are fixed to the impeller 1260. In this case, when the gap G is generated between the impeller housing 1200 and the impeller 1260, (1280). In this process, the wear ring 1400 is slid toward the pump body 1100 and the gap G is narrowed to restore the gap G (FIG. 6C).

The pipe 1600 into which the fluid flows further includes a joint portion 1620 which is in contact with the lower end of the impeller housing 1200. At this time, the joint portion 1620 can fix the mounting portion 1300 which can mount the pump 10A together with the lower end of the impeller housing 1200. [

The pump 10A of the present invention is mounted between the end of the wear ring 1400 adjacent to the pump body 1100 and the impeller housing 1200 and is provided with a sealing ring for preventing the fluid flowing into the impeller housing 1200 from leaking 1800 < / RTI >

The pump 10A further includes a measurement unit (not shown) electrically connected to the pump body 1100 and measuring whether a gap G is generated according to a predetermined set value. The measuring portion may illustrate the surface area of the impeller 1260, for example. At this time, the operator determines that the gap G is generated according to the change of the surface area of the impeller 1260 shown in the measurement part, and tightens the bolt 1420 to restore the gap G.

When a clearance is provided between the impeller and the fluid inlet, as described above, when a clearance is formed between the impeller and the inflow port through which the fluid flows, the clearance can be restored by using the clearance adjuster, thereby maintaining the pumping efficiency of the pump and improving the reliability of the pump.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

10, 10A: pump 100, 1100: pump body
160: mounting part 180, 1800: sealing part
182: Coupling 220, 1220: Inlet
200, 1200: impeller housing 240, 1240: outlet
260, 1260: Impeller 300: Clearance adjustment part
320, 1420: Bolt 1400: Wear ring
1440: projection part 1280: bolt mounting part

Claims (11)

A pump main body in which a motor for driving the pump is installed;
An impeller housing surrounding an impeller rotatable by driving the motor and having an inlet and an outlet through which fluid is introduced and discharged; And
A gap adjusting unit for adjusting the gap by sliding the impeller housing toward the pump body when a gap is formed between the impeller and the impeller housing; / RTI >
The gap adjustment unit
At least one bolt is installed to adjust the gap,
And a sealing part interposed between the pump body and the impeller housing to prevent leakage of fluid introduced into the impeller housing and to slide with the gap adjusting part when a gap is generated between the impeller housing and the impeller housing And a gap adjustment unit that adjusts a gap between the pump and the pump. delete The method according to claim 1,
The pump main body,
Further comprising a mounting portion for mounting the bolt facing the gap adjusting portion. delete The method of claim 3,
The sealing portion
Further comprising: a coupling portion that engages with the mounting portion and into which the bolt is mounted. The method according to claim 1,
Further comprising a measurement unit electrically connected to the pump body and measuring whether the gap is generated according to a predetermined set value. A pump main body in which a motor for driving the pump is installed;
An impeller housing surrounding an impeller rotatable by driving the motor and having an inlet and an outlet through which fluid is introduced and discharged; And
The impeller housing being slidable in a direction toward the pump body in the impeller housing, and when a gap is formed between the impeller housing and the impeller housing, the housing slides in the direction of the pump body to adjust the gap Wearing;
And a gap adjustment unit (20) for adjusting the gap between the pump and the pump. The method of claim 7,
Preferably,
Further comprising a protrusion protruding from an outer wall of the wear ring,
And at least one bolt is mounted on the protrusion to adjust the clearance. The method of claim 8,
Wherein the impeller housing comprises:
Further comprising a bolt mounting part for engaging with the protruding part and on which the bolt is mounted. The method according to any one of claims 7 to 9,
Further comprising a sealing part mounted between the end of the wear ring adjacent to the pump body and the impeller housing to prevent leakage of the fluid flowing into the impeller housing. The method of claim 10,
Further comprising a measurement unit electrically connected to the pump body and measuring whether the gap is generated according to a predetermined set value.
KR20140079560A 2014-06-27 2014-06-27 A clearance with rhe pump KR101487435B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR20140079560A KR101487435B1 (en) 2014-06-27 2014-06-27 A clearance with rhe pump

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KR101487435B1 true KR101487435B1 (en) 2015-01-29

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090126368A (en) * 2008-06-04 2009-12-09 주식회사 포미니 시스템 Metal pump for continuous galvanizing line
JP2010210056A (en) 2009-03-12 2010-09-24 Ebara Corp Loose short pipe type pipe connector, and pump mechanism
KR101130708B1 (en) 2011-09-01 2012-04-02 윤상근 A wearing control type submerged motor pump
KR101397629B1 (en) 2013-12-18 2014-05-22 (주)오비스 Adjusting apparatus of the gap in underwater pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090126368A (en) * 2008-06-04 2009-12-09 주식회사 포미니 시스템 Metal pump for continuous galvanizing line
JP2010210056A (en) 2009-03-12 2010-09-24 Ebara Corp Loose short pipe type pipe connector, and pump mechanism
KR101130708B1 (en) 2011-09-01 2012-04-02 윤상근 A wearing control type submerged motor pump
KR101397629B1 (en) 2013-12-18 2014-05-22 (주)오비스 Adjusting apparatus of the gap in underwater pump

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