KR101461619B1 - Centrifugal pump havihg a wearing to adjust a gap - Google Patents

Centrifugal pump havihg a wearing to adjust a gap Download PDF

Info

Publication number
KR101461619B1
KR101461619B1 KR1020140103726A KR20140103726A KR101461619B1 KR 101461619 B1 KR101461619 B1 KR 101461619B1 KR 1020140103726 A KR1020140103726 A KR 1020140103726A KR 20140103726 A KR20140103726 A KR 20140103726A KR 101461619 B1 KR101461619 B1 KR 101461619B1
Authority
KR
South Korea
Prior art keywords
wear ring
gap
impeller
casing
centrifugal pump
Prior art date
Application number
KR1020140103726A
Other languages
Korean (ko)
Inventor
안상구
Original Assignee
안상구
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 안상구 filed Critical 안상구
Priority to KR1020140103726A priority Critical patent/KR101461619B1/en
Application granted granted Critical
Publication of KR101461619B1 publication Critical patent/KR101461619B1/en

Links

Images

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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal 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
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • 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
    • F05D2240/00—Components
    • F05D2240/55—Seals
    • 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
    • Y10S277/00—Seal for a joint or juncture
    • 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

Landscapes

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

Abstract

The present invention relates to a centrifugal pump having an impeller rotatable inside a casing, wherein a fluid located in a high-pressure region of the discharge port side of the casing is prevented from flowing back to a low-pressure region on the suction port side, Wearing; An inclined wear ring facing surface formed on an inner surface of the casing facing the wear ring of the inclined outer surface; A sloped gap forming an inclined flow path between the wear ring of the inclined outer surface and the inclined wear ring facing surface; And fixing means for fixing the wearer on the inclined outer surface so as to be movable from side to side on the impeller to adjust the size of the inclined gap so that the wear ring of the inclined outer surface and the inclined wear ring facing surface are worn out, There is provided a centrifugal pump having a gap adjusting wear ring configured to improve the pumping performance by adjusting the position of the wear ring on the inclined outer surface on the impeller by increasing the inclined gap to reduce the inclined gap.
According to the centrifugal pump of the present invention, after a certain period of wear, wear occurs between the wear ring and the wear ring facing surface to increase the gap, and when the pumping efficiency becomes low, the size of the sloped gap To achieve the same high pumping efficiency as the new pump.

Description

TECHNICAL FIELD [0001] The present invention relates to a centrifugal pump having a gap adjusting wear ring,

The present invention relates to a centrifugal pump having a built-in impeller, and more particularly, to a centrifugal pump that includes a wear ring for preventing the fluid in the high pressure region at the outlet side of the centrifugal pump from flowing back to the inlet low pressure region, , When the wear ring is worn out after a certain period of use, the gap between the wear ring and the wear ring facing surface becomes larger and the pumping efficiency becomes lower, the wear ring is moved to the right and left to narrow the gap between the wear ring surfaces. And more particularly, to a centrifugal pump having an improved gap adjustment wear ring to be obtained.

Generally, the centrifugal pump has a structure as shown in Fig.

1 is a half sectional view showing the structure of a conventional centrifugal pump 1; Such a conventional centrifugal pump 1 has an impeller 20 which rotates inside the casing 10.

Such a centrifugal pump 1 causes rotational motion of the fluid by the impeller 20 rotating at a high speed in the closed casing 10 and causes the fluid to flow outward from the central portion of the impeller 20 by the centrifugal force generated at this time The pump is pumped by increasing the pressure of the fluid while flowing.

Such a centrifugal pump has a suction port 12 and a discharge port 14 formed in a casing 10 so that the fluid enters the center portion of the impeller 20 through the suction port 12 and flows through the impeller 20 while passing through the impeller 20, And receives lift and kinetic energy.

This kinetic energy is converted into pressure energy through the impeller 20, and the pressure on the side of the discharge port 14 is greatly increased.

The impeller 20 has an inlet end having a large diameter and an outlet end having a small diameter, and is rotatably assembled inside the casing 10.

In the operation of the centrifugal pump 1, when power is applied to a motor (not shown), the impeller 20 in the casing 10 rotates through the shaft 30 and fluid pressure is generated by the centrifugal force, The fluid moves from the suction port 12 of the pump 10 to the discharge port 14 side and is ejected.

At this time, the pressure at the inlet end of the impeller 20 and the pressure at the outlet end of the impeller 20 show a large difference. That is, a low-pressure region P1 is formed on the side of the suction port 12, a high-pressure region P2 is formed on the side of the discharge port 14 of the casing 10, and a high-pressure region P2 is formed on the side of the discharge port 14 The fluid flows back through the gap t between the casing 10 and the impeller 20 into the low pressure region P1 on the suction port 12 side (see arrows in Fig. 1).

Therefore, a wear ring 40 is attached to the periphery of the impeller 20, which is a rotating body, in order to prevent the back flow phenomenon.

The wear ring 40 is generally made of stainless steel or bronze for preventing rusting and durability. The wear ring 40 is mounted in the form of a ring around the impeller 20, And a gap (t) is formed between itself and the surface (50).

This conventional wear ring 40 is configured such that when the impeller 20 of the centrifugal pump is in the close type, most of the impeller 20 is in the rotation center axis direction X of the impeller 20, for example, With the wearer facing surface 50 horizontally, and forms a clearance t of the horizontal flow path therebetween as shown in FIG.

However, if the gap t is used for a long time, the wear ring 40 and the wear ring facing surface 50 are damaged due to wear and corrosion caused by foreign substances contained in the fluid, as shown in FIG. 2B, Since the gap t increases, the amount of back flow of the fluid increases greatly, resulting in a decrease in the pump discharge amount. As a result, the performance of the pump drops greatly, and eventually the wear ring 40 of the impeller 20 must be replaced.

As a conventional technique for solving such conventional problems, Korean Patent Laid-Open Publication No. 1998-017629 entitled " Wear Ring Structure of Centrifugal Pump "has been proposed.

In the conventional centrifugal pump including a casing containing at least an impeller, an elastic gas tight material is provided between the impeller and the casing cover. The gas tight material is elastic rubber having an elastic force, And a flat surface portion formed at the left and right ends of the respective impellers in a seating portion formed on the casing cover.

Since the airtightness material of the elastic rubber material having elasticity is provided, the conventional technique can minimize the leakage loss by forming a multi-stage sealing structure, thereby improving the efficiency of the centrifugal pump and improving the reliability of operation of the centrifugal pump .

However, since such a conventional technique requires the provision of a sealing material of a separate elastic rubber material, the number of parts is increased, which makes it difficult to manufacture. Such a sealing material is made of an elastic rubber material, The backflow of the fluid can not be suppressed, and the pumping efficiency is still lowered.

In addition, the conventional centrifugal pump having such a deteriorated performance has a problem that performance improvement can not be fundamentally achieved unless the damaged wearer and the hermetic material are replaced.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a centrifugal pump which, after a certain period of use, wears between wear ring and wear ring facing surfaces, The gap between the wear ring facing surfaces can be easily adjusted by moving and fixing the wear ring mounting position on the impeller left and right so that the old pumping pump with poor pumping performance can be easily repaired on site to achieve the same high pumping efficiency as the new pump And to provide a centrifugal pump having improved gap adjustment wear ring.

According to an aspect of the present invention, there is provided a centrifugal pump including an impeller rotating inside a casing,

A wedge of an inclined outer surface mounted on the impeller to prevent the fluid located in the high pressure area on the discharge port side of the casing from flowing back to the low pressure area on the suction port side;

An inclined wear ring facing surface formed on an inner surface of the casing facing the wear ring of the inclined outer surface;

A sloped gap forming an inclined flow path between the wear ring of the inclined outer surface and the inclined wear ring facing surface; And

And fixing means for fixing the wearer on the inclined outer surface so as to be movable from side to side on the impeller to adjust the size of the inclined gap so that the wear ring of the inclined outer surface and the inclined wear ring facing surface are worn out, There is provided a centrifugal pump having a gap adjusting wear ring configured to improve the pumping performance by adjusting the position of the wear ring on the inclined outer surface on the impeller to reduce the inclined gap.

Preferably, the fixing means includes a fixing bolt penetrating the wear ring of the inclined outer surface to fix the worn ring on the impeller, and an elongated hole on the impeller through which the end of the fixing bolt is inserted and fixed, The hole provides a centrifugal pump having a gap-regulating wear ring elongated in the direction in which the wear ring of the inclined outer face is brought close to or away from the inclined wear ring facing surface.

Further, in the present invention, it is preferable that the inclined wear facing surface forms a concave groove in a region facing the wear ring of the inclined outer surface, and the concave groove is provided with an inclined inner surface corresponding to the wearer of the inclined outer surface A second aspect of the present invention provides a centrifugal pump having a wear ring for gap adjustment, which further includes a second wearer movably mounted via second fastening means.

Preferably, the second fixing means includes a second fixing bolt passing through the second wearer of the inclined inner surface and fixing the second wearer to the casing, and a second fixing bolt formed on the casing in which the end of the second fixing bolt is inserted and fixed Wherein the second elongated hole is formed along the slope of the inclined gap so that when the second fixing bolt is positioned in the second elongated hole, There is provided a centrifugal pump having a gap adjusting wear ring configured to move in a direction approaching or departing from a wear ring of a photograph outer surface.

Further, the present invention preferably provides a centrifugal pump having a gap adjusting wear ring that forms an inclined angle such that the inclined gap is increased from a low pressure area on the suction port side of the casing toward a high pressure area on the discharge port side.

According to the present invention, there is provided a method of manufacturing an internal combustion engine, comprising: a wear ring of an inclined outer surface mounted on the impeller through a fixing means on the inner side of the casing; an inclined wear ring facing surface formed on the inner surface of the casing facing the wear ring of the inclined outer surface; And fixing means for fixing the wear ring of the impeller to the impeller so as to be movable from side to side so as to adjust the size of the inclined clearance.

Therefore, according to the centrifugal pump of the present invention, after a certain period of wear, wear occurs between the wear ring and the wear ring facing surface to increase the gap, and when the pumping efficiency lowers, the size of the sloped gap To obtain an improved effect of achieving the same high pumping efficiency as a new pump.

FIG. 1 is a half sectional view showing a centrifugal pump according to a conventional technique.
2A is a cross-sectional explanatory view showing a clearance of a horizontal flow path formed between a wear ring and a wear ring facing surface in a centrifugal pump according to a conventional technique.
FIG. 2B is a cross-sectional view showing a state in which a gap is widened due to abrasion occurring between a wear ring and a wear ring facing surface in a centrifugal pump according to a conventional technique.
FIG. 3 is a half sectional view showing the centrifugal pump according to the present invention in an incision.
4 is an explanatory enlarged sectional view showing a structure in which, in the centrifugal pump according to the present invention, an inclined gap is formed between a wear ring of a sloping outer surface and an inclined wear ring facing surface.
FIG. 5A is a cross-sectional explanatory view showing a state in which a wear in the inclined outer surface of the centrifugal pump according to the present invention is worn between the wear ring and the inclined wear ring facing surface to increase the inclined gap.
FIG. 5B is a cross-sectional explanatory view showing a state in which a wedge of an inclined outer surface of the centrifugal pump according to the present invention is shifted and the inclined gap is largely reduced.
FIG. 6 is a cross-sectional view illustrating a configuration in which a wedge of an inclined outer surface and a second wearer of an inclined inner surface are arranged side by side in a deformation structure of a centrifugal pump according to the present invention, so that the size of an inclined gap can be controlled small .
FIG. 7 is a perspective view of a centrifugal pump according to a modification of the centrifugal pump according to the present invention. FIG. 7 is a perspective view of a centrifugal pump according to another embodiment of the present invention. Fig.

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

The centrifugal pump 100 of the present invention includes an impeller 120 that rotates inside a casing 110, as shown generally in FIG.

The impeller 120 is equipped with a wear ring, which is different from the conventional horizontal structure, and has a slant outer surface structure.

That is, the wearer 140 of the inclined outer surface prevents the fluid located in the high-pressure region P2 on the discharge port 14 side of the casing 110 from flowing back to the low-pressure region P1 on the suction port 12 side To the impeller 120 through the fixing means 160, which will be described later.

4, the centrifugal pump 100 of the present invention includes an inclined wear facing surface 150 (see FIG. 4) formed on the inner surface of the casing 110, facing the wear ring 140 of the inclined outer surface, ). The inclined wear ring facing surface 150 may be formed by inclining the inner surface of the casing 110.

Therefore, a sloped gap t1 is formed between the wear ring 140 of the inclined outer surface and the inclined wear ring facing surface 150 to form an inclined flow path.

In other words, the inclined outer wearer 140 and the inclined wearer facing surface 150 of the present invention are configured differently from the conventional horizontal wear ring 40 and the horizontal wet wear facing surface 50, The inclined gap t1 which is formed on the side of the discharge port 14 from the low pressure region P1 on the suction port 12 side of the casing 110 with respect to the rotation center axis direction X of the impeller 120 P2 at an angle of?

The centrifugal pump 100 of the present invention includes fixing means 160 for adjusting the size of the inclined clearance t1 by fixing the wear ring 140 of the inclined outer surface on the impeller 120 so as to be movable laterally ).

The fixing unit 160 includes a fixing bolt 162 for fixing the outer circumferential surface of the inclined outer surface of the fixing bolt 162 to the impeller 120 through the wear ring 140, And an elongated hole (164) on the base (120).

Such an elongated hole 164 is formed in the direction in which the wear ring 140 of the inclined outer face is made to approach or away from the inclined wear ring facing face 150. For example, 120 in the direction of the axis of rotation center.

Such a fixing means 160 allows a user to detach the wearer 140 on the inclined outer surface of the impeller 120 by rotating the fixing bolt 162.

That is, if the fixing bolt 162 is dismantled, the wear ring 140 of the inclined outer surface can be disassembled from the impeller 120. When the fixing bolt 162 is tightened again, the wear ring 140 of the inclined outer surface is guided to the impeller 120 So that it can be restored in the long hole 164.

5A, when the wear ring 140 and the sloping wear ring facing surface 150 are worn out as shown in FIG. 5A, when the centrifugal pump 100 having the above- And the inclined gap t1 becomes larger.

When the inclined gap t1 becomes large, a large amount of fluid flows backward through the inclined clearance t1, resulting in a decrease in the pump discharge amount, and consequently, the pump performance is greatly deteriorated.

In this case, the user dismantles the casing 110 of the centrifugal pump 100 and adjusts the position of the wear ring 140 on the inclined outer surface of the impeller 120.

At this time, the fixing bolt 162 of the fixing means 160 is disassembled to disassemble the wearer 140 of the inclined outer surface from the impeller 120, and the wearer 140 of the inclined outer surface, as shown in FIG. 5B, Is moved in the long hole 164 in the direction adjacent to the inclined wear facing surface 150 and then is fixed in the long hole 164 by tightening the fixing bolt 162 again so that the inclination of the inclined gap t1 Small size can be adjusted.

At this time, the moving distance of the wear ring 140 on the inclined outer surface varies depending on the degree of abrasion of the centrifugal pump. For example, about 0.5 to 2 mm is sufficient.

If the size of the inclined clearance t1 is reduced, it is possible to adjust the size of the inclined gap t1 by the user or the operator in the field without repairing the wearing, .

Although the present invention has been described with respect to the structure for reducing the size of the inclined clearance t1 by adjusting the position of the wear ring 140 on the outer surface inclined on the impeller 120 as described above, Lt; / RTI >

That is, as shown in FIG. 6, the inclined grooves 152 are formed in a region of the inclined wear facing surface 150 facing the wear ring 140 of the inclined outer surface, 152 may have a structure in which a second wearer 170 of an inclined inner surface corresponding to the wearer 140 of the inclined outer surface is movably mounted through a second fixing means 180. [

That is, instead of moving the wear ring 140 of the inclined outer surface, the second wear ring 170 of the inclined inner surface may be moved close to the wear ring 140 of the inclined outer surface to increase the size of the inclined gap t1 Small adjustable.

In this modified structure, the second fixing means 180 includes a second fixing bolt 182 passing through the second wear ring 170 of the inclined inner surface to fix the casing to the casing 110, And a second elongated hole 184 on the casing 110 into which the end of the bolt 182 is inserted and fixed.

In this modified structure, the second elongated hole 184 is formed along the inclination angle? Direction of the inclined gap t1.

The second fixing bolt 182 can be positioned along the inclination angle? Direction of the inclined gap t1 in the second elongated hole 184, The wear ring 170 can be positioned to be close to the wear ring 140 of the inclined outer surface.

The positioning of the second wear ring 170 on the inclined inner face through the second fastening means 180 so as to be close to the wear ring 140 on the inclined outer face may be performed by the fixing means described previously with reference to FIG. Since the position adjustment function of the position adjusting unit 160 may be the same as the position adjusting function of the position adjusting unit 160, detailed description thereof will be omitted.

It will be appreciated that in such a modified configuration, the wear ring 140 of the inclined outer surface can be replaced by obliquely machining the outer surface of the impeller 120 instead of a separate component.

In addition to the positioning of the second wear ring 170 on the inclined inner surface through the second securing means 180 it is also possible to move the wear ring 140 on the inclined outer surface through the securing means 160 simultaneously .

7, the centrifugal pump 100 of the present invention further includes a rectangular thread 190 formed on the inclined outer surface of the wear ring 140 to rotate simultaneously with the rotation of the impeller 120, .

 The rectangular thread 190 is disposed in the opposite direction to the fluid flowing back to the inclined gap t1 during rotation of the impeller 120, that is, from the low pressure region P1 of the suction port 12 to the discharge port Pressure region P2 of the discharge port 14 so that the fluid flows from the low-pressure region P1 of the suction port 12 to the high-pressure region P2 of the discharge port 14 within the inclined gap t1 It is possible.

According to the present invention, according to the present invention, when the gap t1 becomes large and the pumping efficiency becomes low due to abrasion between the wear ring and the wear ring facing surfaces after a certain period of use, it is possible to obtain an improved effect that the same high pumping efficiency as the new pump can be obtained by adjusting and repairing the size of the t1.

Although the present invention has been described in detail with reference to specific embodiments thereof with reference to the accompanying drawings, the present invention is not limited to such specific structures. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the following claims. For example, the angle [theta] of the inclined gap t1 may be formed in various ranges. In addition, the number and positions of the fixing bolts 162, the second fixing bolts 182, and the like may be different depending on the performance, specification, and size of the centrifugal pump 100. In addition, the fastening means 160 and the second fastening means 180 may be of other movable fastening structures other than bolts 162, 182. However, it is intended that the present invention covers all such modifications and variations as fall within the true scope of the invention.

1: Conventional centrifugal pump 10, 110: Casing
12: inlet 14: outlet
20,120: impeller 30: shaft
40: Wear ring 50: Wear ring facing face
100: Centrifugal pump of the present invention 140: Wear ring of inclined outer surface
150: inclined wear ring facing surface 152: concave groove
160: fixing means 162: fixing bolt
164: elongated hole 170: inclined inner second wear ring
180: second fixing means 182: second fixing bolt
184: second long hole 190: rectangular thread
P1: Low pressure area P2: High pressure area
t: clearance t1: inclined clearance
θ: Angle X: Rotational center axis direction of the impeller

Claims (5)

In a centrifugal pump incorporating an impeller rotating inside a casing,
A wedge of an inclined outer surface mounted on the impeller to prevent the fluid located in the high pressure area on the discharge port side of the casing from flowing back to the low pressure area on the suction port side;
An inclined wear ring facing surface formed on an inner surface of the casing facing the wear ring of the inclined outer surface;
A sloped gap forming an inclined flow path between the wear ring of the inclined outer surface and the inclined wear ring facing surface; And
And fixing means for fixing the wearer on the inclined outer surface so as to be movable from side to side on the impeller to adjust the size of the inclined gap so that the wear ring of the inclined outer surface and the inclined wear ring facing surface are worn out, Wherein the pumping performance is improved by reducing the inclined clearance by adjusting the position of the wear ring on the inclined outer surface on the impeller when the image gap is enlarged. The apparatus according to claim 1, wherein the fixing means includes a fixing bolt passing through a wear ring of the inclined outer surface and fixing the impeller on the impeller, and an elongated hole on an impeller through which an end of the fixing bolt is inserted and fixed, Wherein the wear ring of the inclined outer surface is elongated in a direction that is closer or further away from the inclined wear ring facing surface. 2. The method according to claim 1, wherein the inclined wear ring facing surface forms a concave groove in a region facing the wear ring of the inclined outer surface, and the concave groove is provided with a second wear ring having an inclined inner surface corresponding to the wear ring of the inclined outer surface, Wherein the first and second fixing members are movably mounted through a second fixing unit. The apparatus according to claim 3, wherein the second fixing means comprises: a second fixing bolt passing through the second wearer of the inclined inner surface to fix the casing to the casing; and a second fixing bolt Wherein the second elongated hole is formed along the slope of the inclined gap such that when the second securing bolt is positioned within the second elongated hole, And the wiper is moved in a direction approaching or moving away from the wear ring of the centrifugal pump. The centrifugal pump according to claim 1, wherein the inclined gap forms an inclined angle so that the inclined gap becomes higher toward the high-pressure region on the side of the discharge port from the low-pressure region on the suction port side of the casing.
KR1020140103726A 2014-08-11 2014-08-11 Centrifugal pump havihg a wearing to adjust a gap KR101461619B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140103726A KR101461619B1 (en) 2014-08-11 2014-08-11 Centrifugal pump havihg a wearing to adjust a gap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140103726A KR101461619B1 (en) 2014-08-11 2014-08-11 Centrifugal pump havihg a wearing to adjust a gap

Publications (1)

Publication Number Publication Date
KR101461619B1 true KR101461619B1 (en) 2014-11-19

Family

ID=52290600

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140103726A KR101461619B1 (en) 2014-08-11 2014-08-11 Centrifugal pump havihg a wearing to adjust a gap

Country Status (1)

Country Link
KR (1) KR101461619B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101830114B1 (en) * 2016-02-29 2018-02-21 에스엠코리아 주식회사 Submerged motor pump having variable type insertring
KR20190008338A (en) * 2016-05-17 2019-01-23 자일럼 아이피 매니지먼트 에스.에이 알.엘. Pump and impeller assembly for pumping liquid
KR102447540B1 (en) 2021-10-26 2022-09-23 김준호 Pump re-manufacturing vibration reduction device
KR20230036661A (en) * 2021-09-08 2023-03-15 (주)대주기계 A Centrifugal Compressor Impeller with Backside Cavity

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680899U (en) * 1993-04-22 1994-11-15 株式会社クボタ Pump liner
KR100807944B1 (en) * 2003-07-07 2008-02-28 가부시키가이샤 미죠타 Pump
KR101130708B1 (en) * 2011-09-01 2012-04-02 윤상근 A wearing control type submerged motor pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680899U (en) * 1993-04-22 1994-11-15 株式会社クボタ Pump liner
KR100807944B1 (en) * 2003-07-07 2008-02-28 가부시키가이샤 미죠타 Pump
KR101130708B1 (en) * 2011-09-01 2012-04-02 윤상근 A wearing control type submerged motor pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101830114B1 (en) * 2016-02-29 2018-02-21 에스엠코리아 주식회사 Submerged motor pump having variable type insertring
KR20190008338A (en) * 2016-05-17 2019-01-23 자일럼 아이피 매니지먼트 에스.에이 알.엘. Pump and impeller assembly for pumping liquid
KR102345930B1 (en) 2016-05-17 2021-12-31 자일럼 아이피 매니지먼트 에스.에이 알.엘. Pump and impeller assemblies for pumping liquids
KR20230036661A (en) * 2021-09-08 2023-03-15 (주)대주기계 A Centrifugal Compressor Impeller with Backside Cavity
KR102596031B1 (en) 2021-09-08 2023-10-31 (주)대주기계 A Centrifugal Compressor Impeller with Backside Cavity
KR102447540B1 (en) 2021-10-26 2022-09-23 김준호 Pump re-manufacturing vibration reduction device

Similar Documents

Publication Publication Date Title
KR101461619B1 (en) Centrifugal pump havihg a wearing to adjust a gap
US4913619A (en) Centrifugal pump having resistant components
US9086075B2 (en) Impeller assembly and method
US20170343010A1 (en) Seal for a centrifugal pump
KR20160103440A (en) An Apparatus for Adjusting Wear Ring Gap of Centrifugal Pump
US20070280823A1 (en) Seal device for a fluid machine
KR101461621B1 (en) Centrifugal pump havihg a wearing with an inclined thread
KR101902326B1 (en) Casing Wear-Ring for Centrifugal Volute Pump
KR20060132678A (en) Casing for a centrifugal pump
US11085444B2 (en) Scroll-type fluid machine
CN107269545A (en) Pump machine
KR101677072B1 (en) Casing ring having wear ring, and double suction type centrifugal pump including this same
US11402022B2 (en) Mechanical seal having auxiliary lubricating device
KR20110112367A (en) Liquid ring pump with liner
KR102104416B1 (en) Centrifugal compressor
CN109798232A (en) Oblique tray type plunger pump motor
WO2003078843A1 (en) Vane pump
KR102087831B1 (en) Sleeve structure of pump
US20220120288A1 (en) Inverted Annular Side Gap Arrangement For A Centrifugal Pump
KR101823017B1 (en) Centrifugal pump with reduced leakage loss between casing and impeller
US7189054B2 (en) Self-compensating clearance seal for centrifugal pumps
KR20170010617A (en) A Centrifugal Pump
KR102426025B1 (en) Apparatus for sealing casing of double suction pump
KR101662553B1 (en) Vane pump
JP2022060818A (en) Spindle water sealing device of hydraulic machine and hydraulic machine

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20181120

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20191031

Year of fee payment: 6