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KR20080056858A - Submersible pump - Google Patents

Submersible pump Download PDF

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Publication number
KR20080056858A
KR20080056858A KR1020060129921A KR20060129921A KR20080056858A KR 20080056858 A KR20080056858 A KR 20080056858A KR 1020060129921 A KR1020060129921 A KR 1020060129921A KR 20060129921 A KR20060129921 A KR 20060129921A KR 20080056858 A KR20080056858 A KR 20080056858A
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KR
South Korea
Prior art keywords
impeller
housing
foreign matter
fluid
sludge
Prior art date
Application number
KR1020060129921A
Other languages
Korean (ko)
Inventor
박진채
Original Assignee
박진채
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Publication date
Application filed by 박진채 filed Critical 박진채
Priority to KR1020060129921A priority Critical patent/KR20080056858A/en
Publication of KR20080056858A publication Critical patent/KR20080056858A/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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2288—Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • 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

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

Abstract

본 발명은 물이나 일반 유체는 물론 돈분이나 산업용 슬러지 등 점성이 높고 각종 이물질 등이 함유된 유체의 이송에 적합한 수중펌프에 관한 것이다. The present invention relates to a submersible pump suitable for the transport of a fluid containing a high viscosity and various foreign substances such as pig powder and industrial sludge as well as water or general fluid.

이를 위하여, 본 발명은 지지체에 의해 바닥면으로부터 이격 설치되되 그 저면 중심에 흡입구가 마련되고 일측방에 배출구가 마련된 중공의 하우징과, 하우징 내측에 외부 동력모터에 의해 회전가능하게 장착되고 유체나 슬러지를 용이하게 흡입할 수 있도록 흡입구 외측으로 나선부가 돌출된 임펠러와, 임펠러에 의해 유체나 슬러지 흡입시 이물질을 분쇄할 수 있도록 흡입구 외주면 상에 일정 간격으로 절개된 커팅홈이 형성된다. To this end, the present invention is a hollow housing which is installed spaced apart from the bottom by a support but the inlet is provided in the center of the bottom and the outlet is provided on one side, rotatably mounted by an external power motor inside the housing and fluid or sludge An impeller with a spiral portion protruding outwardly of the suction port to easily suck the suction hole, and cutting grooves cut at regular intervals are formed on the outer circumference of the suction port so that foreign matter can be crushed when the fluid or sludge is sucked by the impeller.

또한, 하우징은 임펠러의 선단 나선부와 커팅홈 간의 작용에 의해 분쇄된 이물질을 그 내측에서 재차 분쇄할 수 있도록 임펠라의 날개에 대응하여 그 후방 내측면에 돌출부가 더 형성된다. In addition, the housing is further provided with a protrusion on the rear inner surface corresponding to the wing of the impeller so that the foreign matter pulverized by the action between the tip spiral portion of the impeller and the cutting groove can be crushed again from the inside thereof.

상기의 기술적 구성에 따르면, 임펠러 선단의 나선부가 흡입구 외측으로 돌출됨으로써 물이나 일반 유체는 물론 돈분이나 산업용 슬러지 등 점성을 갖더라도 하우징 내측으로 용이하게 흡입할 수 있고, 흡입시 임펠러 선단 나선부와 흡입구 외주면 상에 일정 간격으로 형성된 커팅홈 간의 상호 작용에 의해 이물질을 1차 분쇄한 뒤 하우징 내측에서 임펠러 날개와 임펠러 후방 내측면상의 돌출부 간의 상호 작용에 의해 이물질을 재차 분쇄함으로써 배출구를 통하여 원활하게 이송 및 배출할 수 있고 이물질에 의해 펌프가 막히는 현상을 현저히 개선할 수 있다. According to the above technical configuration, the spiral portion of the impeller tip protrudes outside the suction port, so that even if it has viscosity such as water or general fluid, as well as money powder or industrial sludge, it can be easily sucked into the housing. Firstly crush the foreign matter by the interaction between the cutting grooves formed at regular intervals on the outer circumferential surface, and then smoothly transported through the outlet by crushing the foreign matter again by the interaction between the impeller blades and the protrusion on the rear inner surface of the impeller inside the housing. It can drain and significantly improve the clogging of the pump by foreign matter.

Description

수중펌프{UNDERWATER PUMP}Submersible Pumps {UNDERWATER PUMP}

도 1은 본 발명에 따른 수중펌프의 사시도, 1 is a perspective view of an underwater pump according to the present invention,

도 2는 본 발명에 따른 수중펌프의 분해 사시도, 2 is an exploded perspective view of the submersible pump according to the present invention,

도 3은 본 발명에 따른 수중펌프의 요부 상세도, 3 is a detailed view of the main part of the submersible pump according to the present invention,

도 4는 본 발명에 따른 수중펌프의 하우징 단면도이다. 4 is a cross-sectional view of the housing of the submersible pump according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10: 지지체10: support

20: 흡입구20: inlet

30: 배출구30: outlet

40: 하우징40: housing

50: 동력모터50: power motor

60: 임펠러60: impeller

70: 커팅홈70: cutting groove

본 발명은 수중펌프에 관한 것으로, 더욱 상세하게는 물이나 일반 유체는 물론 돈분이나 산업용 슬러지 등 점성이 높고 각종 이물질 등이 함유된 유체의 이송에 적합한 수중펌프에 관한 것이다. The present invention relates to a submersible pump, and more particularly, to a submersible pump suitable for transporting a fluid containing a high viscosity and various foreign substances such as pig powder and industrial sludge, as well as water and general fluid.

일반적으로, 축분 및 산업용 슬러지, 환경폐수 등 각종 이물질이 다량으로 포함된 유체를 이송시키기 위해 사용되는 원심펌프는 축분 및 슬러지의 특성상 점성이 높고 유체 내부에 섬유질이나 기타 각종 이물질을 다량으로 함유하고 있어 높은 점성으로 펌핑효율이 떨어지게 되었을 뿐만 아니라, 이물질의 끼임 현상에 의해 펌프 내부의 빈번한 고장과 작동이 원활하게 이루어지지 않게 되는 현상이 발생하는 등 사용상 많은 제약이 따랐다. In general, centrifugal pumps used to transfer fluids containing a large amount of various foreign substances such as shaft powder, industrial sludge and environmental wastewater have high viscosity due to the characteristics of the shaft powder and sludge and contain a large amount of fiber or other foreign substances in the fluid. Not only was the pumping efficiency deteriorated due to the high viscosity, but there were many restrictions in use, such as frequent failure of the inside of the pump and the phenomenon that the operation was not performed smoothly due to the jamming of foreign substances.

본 발명은 상기와 같은 종래 문제점을 해결하기 위하여 안출된 것으로, 그 목적은 물이나 일반 유체는 물론이고 산업용 슬러지 등 점성이 높은 물질을 용이하게 흡입할 수 있도록 나선형 임펠러가 마련되고, 함유된 이물질을 제1차, 제2차 분쇄함으로써 막힘없이 용이하게 이송할 수 있도록 한 수중펌프를 제공하는 데 있다. The present invention has been made to solve the above-mentioned conventional problems, the object of which is to provide a spiral impeller to easily inhale high viscosity materials, such as industrial sludge, as well as water or general fluid, foreign matter contained An object of the present invention is to provide an underwater pump which can be easily transported without clogging by the first and second grinding.

본 발명은 전술한 기술적 과제를 달성하기 위하여, 지지체에 의해 바닥면으로부터 이격 설치되되 그 저면 중심에 흡입구가 마련되고 일측방에 배출구가 마련된 중공의 하우징과, 하우징 내측에 외부 동력모터에 의해 회전가능하게 장착되고 유체나 슬러지를 용이하게 흡입할 수 있도록 흡입구 외측으로 나선부가 돌출된 임펠러와, 임펠러에 의해 유체나 슬러지 흡입시 이물질을 분쇄할 수 있도록 흡입구 외주면 상에 일정 간격으로 절개된 커팅홈이 형성된 것을 특징으로 한다. In order to achieve the above technical problem, the present invention provides a hollow housing which is spaced apart from the bottom surface by a support but provided with an inlet at a center of the bottom thereof, and an outlet is provided at one side, and is rotatable by an external power motor inside the housing. And an impeller with a spiral protruding outwardly of the suction port to easily suck the fluid or sludge, and cutting grooves cut at regular intervals on the outer circumference of the suction port so that foreign matter can be crushed when the fluid or sludge is sucked by the impeller. It is characterized by.

또한, 커팅홈은 임펠러의 회전으로 이물질이 부딪칠 시 용이하게 커팅할 수 있도록 회전방향 측의 절개면에 커팅날이 더 형성된 것을 특징으로 한다. In addition, the cutting groove is characterized in that the cutting blade is further formed on the cutting surface side of the rotation direction so that it can be easily cut when the foreign matter hit by the rotation of the impeller.

그리고 하우징은 임펠러의 선단 나선부와 커팅홈 간의 작용에 의해 분쇄된 이물질을 그 내측에서 재차 분쇄할 수 있도록 임펠라의 날개에 대응하여 그 후방 내측면에 돌출부가 더 형성된 것을 특징으로 한다. And the housing is characterized in that the protrusion is further formed on the inner back surface of the impeller corresponding to the wing of the impeller so as to crush the foreign matter crushed again by the action between the front end of the impeller and the cutting groove.

이하, 첨부도면을 참조하여 본 발명에 따른 수중펌프의 바람직한 실시 예를 상세히 설명한다. Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the water pump according to the present invention.

먼저, 도 1 및 2에 도시한 바와 같이 본 발명에 따른 수중펌프는 지지체(10)에 의해 바닥면으로부터 이격 설치되되 그 저면 중심에 흡입구(20)가 마련되고 일측방에 배출구(30)가 마련된 중공의 하우징(40)과, 하우징(40) 내측에 외부 동력모터(50)에 의해 회전가능하게 장착되고 유체나 슬러지를 용이하게 흡입할 수 있도록 흡입구(20) 외측으로 나선부(61)가 돌출된 임펠러(60)와, 임펠러(60)에 의해 유체나 슬러지 흡입시 이물질을 분쇄할 수 있도록 흡입구(20) 외주면 상에 일정 간격으로 절개된 커팅홈(70)이 형성된다. First, as shown in FIGS. 1 and 2, the submersible pump according to the present invention is installed to be spaced apart from the bottom by the support 10, and the inlet 20 is provided at the center of the bottom thereof, and the outlet 30 is provided at one side. The spiral housing 61 is rotatably mounted by the external power motor 50 in the housing 40 and the housing 40, and the spiral portion 61 protrudes out of the inlet 20 so that the fluid or sludge can be easily sucked. The cut impeller 60 and the cutting groove 70 cut at regular intervals are formed on the outer circumferential surface of the inlet 20 so as to crush the foreign matter when the fluid or sludge is sucked by the impeller 60.

상기와 같이 구성된 수중펌프는 물이나 일반 유체는 물론 돈분이나 산업용 슬러지를 동력에 의해 외부로 이송하기 위한 것으로, 하수종말처리장, 분뇨 수집조, 정화조 등 수중에 설치된다. The submersible pump configured as described above is used for transporting money or industrial sludge as well as water or general fluid to the outside by means of power, and is installed in water, such as a sewage treatment plant, a manure collection tank, and a septic tank.

상기의 기술적 구성에 따르면, 동력모터(50)에 전원을 인가하면 이와 연동하여 임펠러(60)가 회전하게 되는데, 임펠러(60)의 회전으로 하우징(40) 내측의 유체가 배출구(30)를 통해 외부로 배출됨으로써 하우징(40) 내의 압력이 낮아져 흡입구(20)를 통해 하수종말처리장이나 분뇨 수집조, 정화조 내의 유체를 흡입하게 된다. According to the above technical configuration, when the power is applied to the power motor 50, the impeller 60 is rotated in conjunction with this, the fluid inside the housing 40 by the rotation of the impeller 60 through the outlet 30 By being discharged to the outside, the pressure in the housing 40 is lowered to suck the fluid in the sewage treatment plant, the manure collection tank, or the septic tank through the suction port 20.

이때, 흡입구(20) 외측으로 돌출된 임펠러(60) 선단의 나선부(61)가 임펠러(60)의 회전으로 발생한 흡입력과 함께 슬러지 등을 퍼 올림으로써 물이나 일반 유체는 물론 돈분이나 산업용 슬러지 등을 용이하게 흡입할 수 있게 된다. At this time, the spiral portion 61 of the tip of the impeller 60 protruding to the outside of the suction port 20 spreads the sludge together with the suction force generated by the rotation of the impeller 60, such as water, general fluid, money, industrial sludge, etc. It can be easily inhaled.

한편, 돈분이나 산업용 슬러지에는 뼈, 나뭇가지, 로프, 섬유질 등의 각종 이물질들이 함유되어 있는데, 임펠러(60) 선단의 나선부(61)에 의해 하우징(40) 내측으로 흡입·이송시 이들 이물질들이 흡입구(20) 외주면 상에 일정 간격으로 절개된 커팅홈(70)에 부딪쳐 분쇄되게 된다. On the other hand, money powder or industrial sludge contains various foreign substances such as bones, twigs, ropes, fibers, etc., when the foreign substances are sucked and transported into the housing 40 by the spiral portion 61 of the tip of the impeller 60. The inlet 20 is crushed by hitting the cutting groove 70 cut at regular intervals on the outer peripheral surface.

즉, 도 3에 도시한 바와 같이, 커팅홈(70)은 임펠러(60) 선단 나선부(61)의 회전으로 흡입·이송 중이던 이물질이 부딪칠 시 용이하게 커팅 할 수 있도록 회전방향 측의 절개면에 경사지게 가공된 커팅날(71)이 형성된다. That is, as shown in Figure 3, the cutting groove 70 is a cutting surface on the side of the rotation direction so that it can be easily cut when the foreign matter that is being sucked and transported by the rotation of the impeller 60 front end spiral 61 The cutting blade 71 which is processed to be inclined is formed.

다음, 도 4는 하우징의 단면도로서, 동 도면에 도시한 바와 같이 하우징(40)은 임펠러(60)의 선단 나선부(61)와 커팅홈(70) 간의 작용에 의해 분쇄된 이물질을 그 내측에서 재차 분쇄할 수 있도록 임펠러(60)의 날개(62)에 대응하여 그 후방 내측면에 돌출부(41)가 더 형성된다. Next, Figure 4 is a cross-sectional view of the housing, the housing 40, as shown in the figure, the foreign matter crushed by the action between the tip spiral portion 61 and the cutting groove 70 of the impeller 60 from the inside thereof The protrusion 41 is further formed on the rear inner side of the impeller 60 so as to be crushed again.

이에 따라, 임펠러(60) 선단 나선부(61)와 커팅홈(70) 간의 작용에 의해 1차 분쇄된 이물질이 임펠러(60)를 따라 하우징(40) 내를 회전하게 되는데, 이때 임펠러 날개(62)가 하우징(40) 후방 내측의 돌출부(41)와 교차할 시 그 사이에 끼어 재차 분쇄되게 된다. Accordingly, the foreign matter firstly crushed by the action between the tip spiral portion 61 and the cutting groove 70 of the impeller 60 rotates in the housing 40 along the impeller 60, at which time the impeller blade 62 ) Is interposed between the protrusions 41 at the rear inner side of the housing 40 to be crushed again.

그 결과, 유체에 함유된 이물질들이 흡입구(20) 측으로 유입시 1차 분쇄되고, 하우징(40) 내에서 임펠러 날개(62)와 돌출부(41)에 의해 2차 분쇄됨으로써 배출구(30)를 통해 원활하게 배출될 뿐만 아니라 이물질에 의해 펌프가 막히는 현상을 현저히 개선할 수 있게 된다. As a result, foreign matter contained in the fluid is first crushed when introduced into the inlet 20, and secondly pulverized by the impeller blade 62 and the protrusion 41 in the housing 40, thereby smoothly flowing through the outlet 30. Not only is it discharged, but it is possible to significantly improve the clogging of the pump by foreign matter.

이상에서 상세히 설명한 바와 같이, 본 발명에 따르면 임펠러 선단의 나선부가 흡입구 외측으로 돌출됨으로써 물이나 일반 유체는 물론 돈분이나 산업용 슬러지 등 점성을 갖더라도 하우징 내측으로 용이하게 흡입할 수 있고, 흡입시 임펠러 선단 나선부와 흡입구 외주면 상에 일정 간격으로 형성된 커팅홈 간의 상호 작용에 의해 이물질을 1차 분쇄한 뒤 하우징 내측에서 임펠러 날개와 임펠러 후방 내측면상의 돌출부 간의 상호 작용에 의해 이물질을 재차 분쇄함으로써 배출구를 통하여 원활하게 배출할 수 있을 뿐만 아니라 이물질에 의해 펌프가 막히는 현상을 현저히 개선할 수 있게 된다. As described in detail above, according to the present invention, the spiral portion of the impeller tip is protruded to the outside of the suction port, so that even if it has viscosity such as water or general fluid, as well as money powder or industrial sludge, it can be easily sucked into the housing. Firstly crush the foreign matter by the interaction between the spiral part and the cutting groove formed at regular intervals on the outer circumference of the suction port, and then again by crushing the foreign matter by the interaction between the impeller blades and the protrusion on the rear inner surface of the impeller inside the housing. Not only can it be discharged smoothly, but it can also significantly improve the clogging of the pump by foreign substances.

Claims (3)

지지체에 의해 바닥면으로부터 이격 설치되되 그 저면 중심에 흡입구가 마련되고 일측방에 배출구가 마련된 중공의 하우징과,A hollow housing which is spaced apart from the bottom by a support and provided with an inlet at a center of the bottom thereof and an outlet at one side thereof; 상기 하우징 내측에 외부 동력모터에 의해 회전가능하게 장착되고 유체나 슬러지를 용이하게 흡입할 수 있도록 상기 흡입구 외측으로 나선부가 돌출된 임펠러와, An impeller rotatably mounted inside the housing by an external power motor and having a spiral portion protruding outward from the suction port so as to easily suck fluid or sludge; 상기 임펠러에 의해 유체나 슬러지 흡입시 이물질을 분쇄할 수 있도록 상기 흡입구 외주면 상에 일정 간격으로 절개된 커팅홈이 형성된 것을 특징으로 하는 수중펌프. Submersible pump characterized in that the cutting grooves are cut at regular intervals formed on the outer peripheral surface of the suction port so as to crush the foreign matter when the fluid or sludge suction by the impeller. 제 1항에 있어서,The method of claim 1, 상기 커팅홈은 상기 임펠러의 회전으로 이물질이 부딪칠 시 용이하게 커팅할 수 있도록 회전방향 측의 절개면에 커팅날이 더 형성된 것을 특징으로 하는 수중펌프. The cutting groove is an underwater pump, characterized in that the cutting blade is further formed on the cutting surface side of the rotation direction so that when the foreign matter hit by the rotation of the impeller. 제 1항에 있어서, The method of claim 1, 상기 하우징은 상기 임펠러의 선단 나선부와 상기 커팅홈 간의 작용에 의해 분쇄된 이물질을 그 내측에서 재차 분쇄할 수 있도록 상기 임펠라의 날개에 대응하여 그 후방 내측면에 돌출부가 더 형성된 것을 특징으로 하는 수중펌프. The housing may further include a protrusion formed on a rear inner surface of the housing so as to correspond to the wing of the impeller so that the foreign matter pulverized by the action between the tip spiral portion of the impeller and the cutting groove may be crushed again from the inside thereof. Pump.
KR1020060129921A 2006-12-19 2006-12-19 Submersible pump KR20080056858A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102163030B1 (en) * 2019-12-19 2020-10-07 유상석 centrifugalscrewimpeller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102163030B1 (en) * 2019-12-19 2020-10-07 유상석 centrifugalscrewimpeller

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