KR19990060806A - Gear pump - Google Patents

Gear pump Download PDF

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Publication number
KR19990060806A
KR19990060806A KR1019970081050A KR19970081050A KR19990060806A KR 19990060806 A KR19990060806 A KR 19990060806A KR 1019970081050 A KR1019970081050 A KR 1019970081050A KR 19970081050 A KR19970081050 A KR 19970081050A KR 19990060806 A KR19990060806 A KR 19990060806A
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KR
South Korea
Prior art keywords
gear
fluid
inner gear
rotating shaft
gear pump
Prior art date
Application number
KR1019970081050A
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Korean (ko)
Other versions
KR100286713B1 (en
Inventor
성시풍
Original Assignee
구자홍
엘지전자 주식회사
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.)
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Application filed by 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019970081050A priority Critical patent/KR100286713B1/en
Publication of KR19990060806A publication Critical patent/KR19990060806A/en
Application granted granted Critical
Publication of KR100286713B1 publication Critical patent/KR100286713B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • F04C11/003—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle having complementary function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

본 발명은 기어 펌프에 관한 것으로서, 특히 압력유체의 출구 위치를 변경하여 회전축 양단에서의 힘의 평형을 유지할 수 있도록 한 것이다.The present invention relates to a gear pump, in particular to change the outlet position of the pressure fluid to maintain the balance of the force on both ends of the rotation axis.

이와같은 목적을 달성하기 위하여 본 발명은 회전축의 외주연부에 삽착된 내측기어와, 상기 내측기어가 내장된 상태에서 내측기어에 의하여 회전되면서 유체를 압축송액하는 기어 펌프에 있어서,In order to achieve the above object, the present invention provides an inner gear inserted into the outer circumference of the rotating shaft, and a gear pump for compressing and feeding the fluid while being rotated by the inner gear while the inner gear is embedded,

상기 회전축에 축방향으로 홀를 뚫어 유체 출구를 형성하였다.Holes were axially drilled in the rotation shaft to form fluid outlets.

Description

기어 펌프Gear pump

본 발명은 기어 펌프에 관한 것으로서, 특히 압력유체의 출구 위치를 변경하여 회전축 양단에서의 힘의 평형을 유지할 수 있도록 한 것이다.The present invention relates to a gear pump, in particular to change the outlet position of the pressure fluid to maintain the balance of the force on both ends of the rotation axis.

종래의 기어 펌프는 도 1과 도 2에 도시한 바와같이 중앙부에 별(star)모양의 홀(1)이 형성된 외측기어(2)의 상기 홀(1)에 내장된 십자형의 내측기어(3)가 모터(미도시)의 회전축(4) 외주연부에 삽착된 상태에서 상기 내측기어(3)가 회전축(4)과 함께 회전하면, 동시에 상기 내측기어(3)에 의하여 외측기어(2)가 회전된다.Conventional gear pumps have a cross-shaped inner gear (3) embedded in the hole (1) of the outer gear (2) formed with a star-shaped hole (1) in the center as shown in Figures 1 and 2 When the inner gear 3 rotates together with the rotation shaft 4 in a state where the inner gear 3 is inserted into the outer periphery of the rotation shaft 4 of the motor (not shown), the outer gear 2 is rotated by the inner gear 3 at the same time. do.

이때 상기 내측기어(3)와 외측기어(2) 사이의 공간(1)은 계속되는 회전으로 각부위에서 수시로 체적이 가변된다.At this time, the space 1 between the inner gear 3 and the outer gear 2 is frequently changed in volume at each part by continuous rotation.

따라서 상기 내측기어(3)와 외측기어(2) 사이의 공간으로 유입된 유체(5)는 내측기어(3)와 외측기어(2)의 회전운동에 의하여 고압으로 압축된다.Therefore, the fluid 5 introduced into the space between the inner gear 3 and the outer gear 2 is compressed to a high pressure by the rotational movement of the inner gear 3 and the outer gear 2.

상기 내측 기어(3)와 외측기어(2)를 사용하여 유체(5)를 고압으로 압축 송액하는 펌프를 기어 펌프라 하며 그 구조는 회전축(4)의 외주연부에 삽착된 내측기어(3) 및 외측 기어(2)가 내장된 1단 기어부(7) 및 2단 기어부(9)가 상부면 중앙에 각각 형성된 1단 몸체(6) 및 2단 몸체(8)와, 상기 회전축(4)의 상단 및 그 상단을 회전지지하는 상단 베어링(미도시)이 삽착된 안착홈(11)이 형성된 커버(10)로 구성되었으며, 또한 상기 1단 몸체(6)에는 1단 기어부(7)의 좌측 하단부로 유체(5)가 유입되도록 좌측면에 입구(12)가 형성되었으며, 상기 1단 기어부(7)에서 압축된 유체(5)가 2단 기어부(9)로 유입되도록 2단 몸체(8)의 우측 하단부에 유통홀(13)이 형성되었으며, 상기 2단 기어부(9)에서 압축된 유체(5)가 좌측 상단에서 외부로 송액되도록 커버(10)의 상부면 좌측에 출구(14)가 형성되었다.A pump that compresses and delivers the fluid 5 at high pressure by using the inner gear 3 and the outer gear 2 is called a gear pump, and its structure is an inner gear 3 inserted into an outer circumference of the rotating shaft 4 and A first-stage body 6 and a second-stage body 8 each having a first gear 7 and a second gear 9 having a built-in outer gear 2 in the center of the upper surface; and the rotary shaft 4 It consists of a cover 10 is formed with a seating groove 11 is inserted into the top of the top and the top bearing (not shown) for supporting the top of the top, and the first stage body 6 of the first stage gear portion 7 An inlet 12 is formed on the left side to allow the fluid 5 to flow into the lower left portion, and the second stage body so that the fluid 5 compressed in the first gear 7 flows into the second gear 9. A distribution hole 13 is formed at the lower right side of the 8, and the outlet 5 is formed at the left side of the upper surface of the upper surface of the cover 10 so that the fluid 5 compressed in the second gear part 9 is fed from the upper left side to the outside. 14) Castle was.

따라서 이와같이 형성된 기어 펌프는 모터(미도시)에 전원을 인가하여 회전축(4)을 작동하면 상기 회전축(4)을 따라 내측 기어(3)가 회전하며 아울러서 상기 내측기어(3)에 의하여 외측기어(2)가 회전된다.Therefore, the gear pump formed as described above, when the rotary shaft 4 is operated by applying power to a motor (not shown), the inner gear 3 rotates along the rotary shaft 4 and the outer gear (3) by the inner gear 3. 2) is rotated.

그러므로서 입구(12)를 통하여 유체(5)가 1단 기어부(7)로 유입되어 고압으로 압축된 후, 유통홀(13)을 따라 2단 기어부(9)로 유입되어 재차 고압으로 압축된 후 출구(14)를 통하여 송액되었다.Therefore, the fluid 5 enters the first gear part 7 through the inlet 12 and is compressed at high pressure, and then flows into the second gear part 9 along the distribution hole 13 and is compressed again at high pressure. And then delivered through the outlet 14.

그러나 상기 2단 기어부(9)의 고압유체 중 일부는 안착홈(11)으로 유입되어 이중화살표 방향과 같이 축방향으로 회전축(4)에 압력을 작용하며, 그로 인하여 상기 회전축(4)의 하단에 장착된 하측 베어링부(미도시)에 집중적으로 전달되어 상기 하측 베어링부가 파손되는 문제점이 있었다.However, some of the high-pressure fluid of the second gear unit 9 flows into the seating groove 11 to exert pressure on the rotating shaft 4 in the axial direction as in the double arrow direction, thereby lowering the lower end of the rotating shaft 4. There was a problem in that the lower bearing portion is delivered to the lower bearing portion (not shown) mounted on the crush.

따라서 본 발명은 이와같은 문제점을 감안하여 회전축에 축방향으로 구멍을 뚫어 고압유체의 유로를 형성함으로써, 상기 회전축의 축방향으로 작동유체의 압력이 작용되는 것을 방지할 수 있도록 한 것이다.Therefore, in view of the above problems, the present invention is intended to prevent the pressure of the working fluid from being acted in the axial direction of the rotating shaft by forming a passage of the high pressure fluid by drilling a hole in the axial direction in the rotating shaft.

도 1은 종래 기어 펌프의 유체 압축용 기어의 작동 및 구조.1 is a view illustrating the operation and structure of a gear for fluid compression of a conventional gear pump.

도 2는 종래 기어 펌프의 단면도.2 is a cross-sectional view of a conventional gear pump.

도 3은 본 발명을 나타낸 단면도.3 is a cross-sectional view showing the present invention.

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

101 : 회전축 102 : 홀101: rotation axis 102: hole

103 : 1단 몸체 104 : 1단 기어부103: first gear 104: first gear

105 : 입구 106 : 유통홀105: entrance 106: distribution hall

107 : 2단 몸체 108 : 2단 기어부107: two-stage body 108: two-stage gear

109 : 안착홈109: settling groove

본 발명은 도 3에 도시한 바와같이 회전축(101)에 의하여 회전하는 내측기어(미도시) 및 상기 내측기어에 의하여 회전하는 외측기어(미도시)에 의하여 유체를 압축송액하는 기어 펌프에 있어서,The present invention is a gear pump for compressing and feeding a fluid by an inner gear (not shown) rotated by the rotating shaft 101 and an outer gear (not shown) rotated by the inner gear as shown in FIG.

상기 회전축(101)에 축방향으로 홀(102)를 뚫어 유체 출구를 형성하였다.The hole 102 was drilled in the axial direction on the rotating shaft 101 to form a fluid outlet.

이와같이 구성된 본 발명은 모터에 전원을 인가하여 회전축(101)을 작동하면 상기 회전축(101)에 의하여 내측기어가 회전하며 아울러서 외측기어가 내측기어에 의하여 회전되므로서, 입구(105)를 통하여 1단몸체(103)로 유입된 유체가 1단 기어부(104)에서 압축된 후, 유통홀(106)을 통하여 2단몸체(107)로 유입되어 2단 기어부(108)에서 재차 압축된 후, 안착홈(109)으로 유입되어 홀(102)을 통하여 기어 펌프의 외부로 송액된다.In the present invention configured as described above, when the rotary shaft 101 is operated by applying power to the motor, the inner gear is rotated by the rotating shaft 101 and the outer gear is rotated by the inner gear. After the fluid introduced into the body 103 is compressed in the first gear unit 104, the fluid flows into the second body 107 through the distribution hole 106, and is compressed again by the second gear unit 108. It flows into the seating groove 109 and is fed to the outside of the gear pump through the hole 102.

따라서 회전축(101)의 양 끝단의 압력차는 홀(102)을 통과하는 유체의 압력손실분 만큼만 발생하며, 그러한 압력차는 상기 회전축(101)의 양단을 회전지지하는 베어링(미도시)의 지지력에 비하여 매우 적기 때문에 회전축(101)의 양단에서 이중 화살표로 도시한 바와같이 평형을 유지할 수 있게된다.Therefore, the pressure difference between both ends of the rotating shaft 101 is generated only by the pressure loss of the fluid passing through the hole 102, and the pressure difference is much higher than the bearing force of a bearing (not shown) which supports both ends of the rotating shaft 101 in rotation. Since it is small, it is possible to maintain the equilibrium as shown by the double arrows at both ends of the rotating shaft 101.

이상에서 살펴본 바와같이 본 발명은 압력유체의 출구의 위치를 변경하여 상기 압력유체의 압력으로 베어링부의 밀림과 파손을 방지하여 기어 펌프의 안전성 및 신뢰성을 향상할 수 있는 효과가 있다.As described above, the present invention has the effect of improving the safety and reliability of the gear pump by changing the position of the outlet of the pressure fluid to prevent the bearing portion from being pushed and broken by the pressure of the pressure fluid.

Claims (1)

회전축의 외주연부에 삽착된 내측기어와, 상기 내측기어가 내장된 상태에서 내측기어에 의하여 회전되면서 유체를 압축송액하는 기어 펌프에 있어서,An inner gear inserted into an outer circumferential edge of a rotating shaft and a gear pump rotating fluid by an inner gear in a state in which the inner gear is built-in 상기 회전축에 축방향으로 홀를 뚫어 유체 출구를 형성한 것을 특징으로 하는 기어 펌프.Gear hole characterized in that the fluid outlet is formed by drilling a hole in the axis of rotation.
KR1019970081050A 1997-12-31 1997-12-31 Gear pump KR100286713B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019970081050A KR100286713B1 (en) 1997-12-31 1997-12-31 Gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019970081050A KR100286713B1 (en) 1997-12-31 1997-12-31 Gear pump

Publications (2)

Publication Number Publication Date
KR19990060806A true KR19990060806A (en) 1999-07-26
KR100286713B1 KR100286713B1 (en) 2001-04-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101867382B1 (en) * 2017-01-20 2018-06-15 계명대학교 산학협력단 Gerotor pump having dual shaft drive structure in which two pairs of rotors are rotated in the same direction
WO2018135737A1 (en) * 2017-01-20 2018-07-26 계명대학교 산학협력단 Gerotor pump having housing-integrated separation plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101869874B1 (en) * 2017-01-20 2018-06-21 계명대학교 산학협력단 Gerotor pump having dual shaft drive structure and gerotor pump in which the two pairs of rotors rotate in opposite directions to each other

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101867382B1 (en) * 2017-01-20 2018-06-15 계명대학교 산학협력단 Gerotor pump having dual shaft drive structure in which two pairs of rotors are rotated in the same direction
WO2018135737A1 (en) * 2017-01-20 2018-07-26 계명대학교 산학협력단 Gerotor pump having housing-integrated separation plate

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