KR960016041B1 - Fluid circulating equipment of canned pump - Google Patents

Fluid circulating equipment of canned pump Download PDF

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Publication number
KR960016041B1
KR960016041B1 KR1019940014037A KR19940014037A KR960016041B1 KR 960016041 B1 KR960016041 B1 KR 960016041B1 KR 1019940014037 A KR1019940014037 A KR 1019940014037A KR 19940014037 A KR19940014037 A KR 19940014037A KR 960016041 B1 KR960016041 B1 KR 960016041B1
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South Korea
Prior art keywords
fluid
shaft
circulation hole
impeller
circulation
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KR1019940014037A
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Korean (ko)
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KR960001495A (en
Inventor
최석창
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엘지전자 주식회사
구자홍
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Priority to KR1019940014037A priority Critical patent/KR960016041B1/en
Publication of KR960001495A publication Critical patent/KR960001495A/en
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Publication of KR960016041B1 publication Critical patent/KR960016041B1/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606Canned motor pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708Suction grids; Strainers; Dust separation; Cleaning specially for liquid 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 apparatus is designed to provide active fluid circulation for reducing noise generated from dried state operation. The apparatus includes : an inner circulation hole of maximum size for preventing a check ball from removal; an impeller bushing connected to a shaft; and a guide circulation hole connected to the impeller bushing.

Description

캔드 전동기 펌프의 유체순환장치Fluid Circulation System of Cand Motor Pump

제1도는 종래 캔드 전동기 펌프의 단면도.1 is a cross-sectional view of a conventional canned electric motor pump.

제2도는 본 발명 캔드 전동기 펌프의 단면도.2 is a cross-sectional view of the present invention can electric motor pump.

제3도는 본 발명 임펠러부싱의 사시도.3 is a perspective view of the impeller bushing of the present invention.

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

101 : 흡입측102 : 토출측101: suction side 102: discharge side

103 : 임펠러104 : 부하측 베어링103 impeller 104 load-side bearing

105 : 샤프트107 : 캔105: shaft 107: can

108 : 로터아셈110 : 임펠러부싱108: rotor assembly 110: impeller bushing

111 : 내부순환홀112 : 가이드순환홀111: internal circulation hole 112: guide circulation hole

113 : 체크볼14 : 순환유체113: check ball 14: circulating fluid

본 발명은 캔드 전동기 펌프의 유체순환장치에 관한 것으로 특히 유체순환을 원활히 하여 소음을 저감시키고 이물질 유입을 감소시켜 구속현상을 감소시킬 수 있도록 한 것이다.The present invention relates to a fluid circulation device of a canned electric motor pump, in particular, to facilitate the fluid circulation to reduce noise and reduce the inflow of foreign matters to reduce the confinement phenomenon.

종래 캔드 전동기 펌프는 제1도와 같이 흡입축(1)을 통해 유입되는 유체(11)를 순환시키는 임펠러(3)와, 상기 임펠러(3) 중앙에 삽입되는 순환홀(9')이 형성된 부싱(9)과, 상기 부싱(9)에 연결되어 체크볼(13)이 내장된 샤프트(5)와, 상기 샤프트(5)의 일측을 감싸고 있는 부하측 베어링(4)과, 상기 샤프트(5)의 타단에 형성된 반부하측 베어링(6)을 구비하였다.Conventional canned electric motor pump has a bushing having an impeller 3 for circulating the fluid 11 introduced through the suction shaft 1 and a circulation hole 9 'inserted into the center of the impeller 3 as shown in FIG. 9), a shaft (5) connected to the bushing (9), a check ball (13) embedded therein, a load side bearing (4) surrounding one side of the shaft (5), and the other end of the shaft (5). It was provided with the half load side bearing 6 formed in the.

도면중 미설명부호 7은 캔이고, 8은 로터아셈이며 2는 토출측이다.In the figure, reference numeral 7 is a can, 8 is a rotor assembly, and 2 is a discharge side.

이와 같이 구성된 상태에서 제1도와 같이 흡입축(1)에서 유입된 유체의 대부분은 토출측(2)으로 유출되나, 일부 유체(이물질 포함)는 부하측 베어링(4)과 샤프트(5) 사이로 흘러 로터아셈(8)과 캔(7) 사이로 들어가게 된다.In this configuration, most of the fluid flowing from the suction shaft 1 flows to the discharge side 2 as shown in FIG. 1, but some fluid (including foreign matter) flows between the load side bearing 4 and the shaft 5 and the rotor assembly. It enters between (8) and can (7).

이렇게 로터아셈(8)과 캔(7) 사이로 들어간 유체(11)는 압력차이로 인하여 반부하측 베어링(6)과 샤프트(5) 사이로 흘러서 샤프트 중공으로, 그리고 임펠러부싱(9)의 순환홀(9')을 통과하는 순환을 하나의 사이클로 하여 토출측(2)으로 유출된다.The fluid 11 thus entered between the rotor assembling 8 and the can 7 flows between the half-load bearing 6 and the shaft 5 due to the pressure difference, into the shaft hollow, and the circulation hole 9 of the impeller bushing 9. The circulation passing through ') flows out to the discharge side 2 as one cycle.

이때 임펠러부싱(9)의 순환홀(9')은 로터아셈(8)과 캔(7) 사이에 있는 유체 및 증기의 순환을 용이하게 하는 작용을 한다.At this time, the circulation hole 9 'of the impeller bushing 9 serves to facilitate the circulation of the fluid and the steam between the rotor assembling 8 and the can 7.

그런데 로터아셈(8)과 캔(7)의 사이에 있는 유체 및 증기의 순환을 용이하게 하도록 임펠러부싱(9)에 순환홀(9')을 형성시켰으나 구멍위치가 중앙에서 벗어나 있어서 유체손실이 많이 발생하였으며, 체크볼(13)이 빠지지 않도록 하기 위해서는 크기도 체크볼(13)의 크기보다 작게 형성시켜야만 하였기 때문에 유체 및 증기의 순환이 원활하지 못하였다.However, the circulation hole 9 'is formed in the impeller bushing 9 to facilitate the circulation of the fluid and the steam between the rotor assembling 8 and the can 7, but the hole position is out of the center so that the fluid loss is large. In order to prevent the check ball 13 from falling out, the size of the check ball 13 had to be smaller than that of the check ball 13, so that the circulation of fluid and vapor was not smooth.

또한 순환유체(11)는 다량의 이물질이 포함되어 있는 상태로, 이는 부하측 베어링(4)과 샤프트(5) 사이로 흘러 유입되는 경로 이외에는 달리 순환경로가 없어서 순환유체(11)는 로터아셈(8)과 캔 내부에 침적되어 구속현상을 발생시키는 문제점이 있었다.In addition, the circulating fluid 11 is a state in which a large amount of foreign matter is contained, which has no circulation path other than the flow path flowing between the load-side bearing 4 and the shaft 5 so that the circulating fluid 11 is the rotor assembling 8. There was a problem in that it is deposited inside the can and causing the phenomenon of restraint.

본 발명은 이러한 점을 감안하여 발명한 것으로 임펠러부싱의 중앙에 형성되어 체크볼이 빠지는 것을 방지하는 최대 크기의 내부순환홀과 가이드순환홀을 구비함으로써, 캔 내부에 있는 유체 및 증기의 순환을 원활히 하여 베어링과 샤프트 사이의 유막형성을 촉진하고 건조운전으로 발생하는 마찰 소음을 저감시키는데 목적이 있다.The present invention has been invented in view of such a point, and is provided in the center of the impeller bushing to have the maximum size of the inner circulation hole and the guide circulation hole to prevent the check ball from falling out, thereby smoothly circulating the fluid and vapor in the can. The purpose is to promote the oil film formation between the bearing and the shaft and to reduce the friction noise generated by the drying operation.

본 발명을 제2도와 제3도에 의해 설명한다.The present invention will be explained with reference to FIGS. 2 and 3.

흡입측(101)으로 유입되는 유체(114)를 순환시키는 임펠러(103)에 있어서, 샤프트(105)와 연결되는 임펠러부싱(110)의 중앙에 형성되어 체크볼(113)이 빠지는 것을 방지하는 최대크기의 내부순환홀(111)과, 상기 내부순환홀(111)과 같이 이물질이 포함된 유체 및 증기를 유출시키는 임펠러부싱(110)에 형성된 가이드순환홀(112)을 구비하였다.In the impeller 103 for circulating the fluid 114 flowing into the suction side 101, the maximum is formed in the center of the impeller bushing 110 connected to the shaft 105 to prevent the check ball 113 from falling out The inner circulation hole 111 of the size and the guide circulation hole 112 formed in the impeller bushing 110 for flowing out the fluid and vapor containing foreign substances, such as the inner circulation hole 111.

그리고 상기 임펠러부싱(110)은 샤프트(105)에 압입되는 내경부위를 육각형상으로 구비하였다.In addition, the impeller bushing 110 has an inner diameter portion that is pressed into the shaft 105 in a hexagonal shape.

그리고 상기 내부순환홀(111)은 타원형상으로 구비하였다.The inner circulation hole 111 is provided in an elliptical shape.

도면중 미설명부호 102는 토출측이고 104는 부하측 베어링, 107은 캔이며, 108은 로터아셈을 나타낸다.In the figure, reference numeral 102 denotes a discharge side, 104 a load side bearing, 107 a can, and 108 denotes a rotor assembly.

이와 같이 구성된 본 발명은 제2도와 같이 흡입측(101)에서 유입된 유체의 대부분은 토출측으로 유출되나 이물질이 포함된 일부유체는 순환유체(114)로 되어 베어링(104)과 샤프트(105) 사이로 유입되어 종래와 같이 압력차에 의해 순환되어 타원형의 내부순환홀(111)을 통하여 순환하여 토출측(102)으로 유출된다.According to the present invention configured as described above, most of the fluid introduced from the suction side 101 is discharged to the discharge side as shown in FIG. 2, but some of the fluid containing the foreign matter becomes a circulating fluid 114 between the bearing 104 and the shaft 105. Inflow is circulated by the pressure difference as in the prior art and circulated through the elliptical inner circulation hole 111 and flows out to the discharge side 102.

이때 순환유체(114)에는 배관 등에서 발생한 이물질이 다량 혼입되어 있는 상태로, 이러한 이물질이 베어링(104)과 샤프트(105) 사이로 유입될 경우 로터아셈(108) 외부나 캔(107) 내부에 침적되는데 임펠러부싱(110)에 내부순환홀(111) 이외에도 원형의 샤프트(105)와 육각형상의 임펠러부싱(110) 사이로 유체를 토출측(102)으로 유출시키는 가이드순환홀(112)이 형성되어서 침적현상을 현저히 감소시킬 수 있는 것이다.At this time, a large amount of foreign substances generated in the piping or the like is mixed in the circulating fluid 114, and when such foreign substances flow between the bearing 104 and the shaft 105, they are deposited outside the rotor assembly 108 or inside the can 107. In addition to the inner circulation hole 111 in the impeller bushing 110, a guide circulation hole 112 is formed between the circular shaft 105 and the hexagonal impeller bushing 110 to discharge the fluid to the discharge side 102, thereby significantly reducing the deposition phenomenon. It can be reduced.

또한 토출측(102)으로 유출되는 면적을 증대시켜서 증기 및 유체의 순환이 됨으로 소음 저감의 효과도 유도할 수 있다.In addition, by increasing the area flowing out to the discharge side 102 to be the circulation of the vapor and fluid can also induce the effect of noise reduction.

이와 같은 본 발명은 부하측 베어링과 샤프트 사이로 이물질이 쉽게 들어가지 않아 침적현상을 감소시키며 캔 내부에 있는 유체 및 증기의 순환을 원활히 하여 건조운전으로 발생하는 마찰소음을 감소시킬 수 있는 발명이다.As described above, the present invention is an invention in which foreign matter does not easily enter between the load-side bearing and the shaft to reduce deposition, and smoothly circulates the fluid and steam in the can to reduce friction noise generated by a drying operation.

Claims (3)

샤프트와 연결되는 임펠러부싱의 중앙에 형성되어 체크볼이 빠지는 것을 방지하는 최대 크기의 내부순환홀과, 상기 내부순환홀과 같이 이물질이 포함된 유체 및 증기를 유출시키는 임펠러부싱에 형성된 가이드순환홀을 구비한 것을 특징으로 하는 캔드 전동기 펌프의 유체순환장치.The inner circulation hole of the maximum size is formed in the center of the impeller bushing connected to the shaft to prevent the check ball from falling out, and the guide circulation hole formed in the impeller bushing for outflowing the fluid and vapor containing foreign substances such as the inner circulation hole. A fluid circulation device of a canned electric motor pump, characterized in that provided. 제1항에 있어서, 임펠러부싱은 샤프트에 압입되는 내경부위를 다각형상으로 구비한 것을 특징으로 하는 캔드 전동기 펌프의 유체순환장치.The fluid circulation device of a canned electric motor pump according to claim 1, wherein the impeller bushing has an inner diameter portion pressed into the shaft in a polygonal shape. 제1항에 있어서, 내부순환홀을 타원형상으로 구비한 것을 특징으로 하는 캔드 전동기 펌프의 유체순환장치.The fluid circulation device of a canned electric motor pump according to claim 1, wherein the inner circulation hole has an elliptical shape.
KR1019940014037A 1994-06-21 1994-06-21 Fluid circulating equipment of canned pump KR960016041B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940014037A KR960016041B1 (en) 1994-06-21 1994-06-21 Fluid circulating equipment of canned pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940014037A KR960016041B1 (en) 1994-06-21 1994-06-21 Fluid circulating equipment of canned pump

Publications (2)

Publication Number Publication Date
KR960001495A KR960001495A (en) 1996-01-25
KR960016041B1 true KR960016041B1 (en) 1996-11-25

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KR1019940014037A KR960016041B1 (en) 1994-06-21 1994-06-21 Fluid circulating equipment of canned pump

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