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KR100262365B1 - Double oil seal structure - Google Patents

Double oil seal structure Download PDF

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Publication number
KR100262365B1
KR100262365B1 KR1019970053830A KR19970053830A KR100262365B1 KR 100262365 B1 KR100262365 B1 KR 100262365B1 KR 1019970053830 A KR1019970053830 A KR 1019970053830A KR 19970053830 A KR19970053830 A KR 19970053830A KR 100262365 B1 KR100262365 B1 KR 100262365B1
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South Korea
Prior art keywords
oil
oil seal
casing
rotating shaft
seal
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KR1019970053830A
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Korean (ko)
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KR19990032715A (en
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송성배
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구자홍
엘지전자주식회사
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    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • F16C33/741—Sealings of sliding-contact bearings by means of a fluid
    • F16C33/743—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

본 발명은 특수 목적용 펌프(예: 화학용, 고압 저유량의 펌프) 등의 유체기계 축봉장치에 적용되는 이중 오일씰 구조에 관한 것이다.The present invention relates to a double oil seal structure applied to a fluid mechanical shaft device such as a special purpose pump (for example, a chemical, a high pressure low flow pump).

이같은 본 발명에 의하면, 회전축(1)이 케이싱(2)을 관통하고, 상기 케이싱(2) 내부에 원통형의 씰박스(3)가 설치되는 유체기계에 있어서,According to the present invention, in the fluid machine in which the rotating shaft 1 penetrates the casing 2 and the cylindrical seal box 3 is installed inside the casing 2,

상기 회전축(1)에 고무제품과 같은 연성재료로서 스프링(5)이 포함되는 제 1 및 제 2 오일씰(10a)(10b)을 서로 마주보도록 설치하고,The first and second oil seals 10a and 10b including the spring 5 as a soft material such as a rubber product are installed on the rotary shaft 1 so as to face each other.

상기 제 1 및 제 2 오일씰(10a)(10b) 사이에 공간(A)(B)을 형성하여 윤활작용하는 오일이나 그리스가 충진될수 있도록 스페이서(20)를 위치시킨 것을 특징으로 하여 회전축의 밀봉성을 향상시키면서 충진된 오일의 윤활작용으로 회전축의 회전을 원활히 하고 동력소모를 최소화하는 한편, 유막이 밀폐의 효과도 가져줄수 있도록 한개의 오일씰이 파손되었을 경우 또 다른 오일씰로서 안전장치 역활을 수행하도록 하여 제품의 신뢰성 및 수명을 오래 지속시키는데 있는 것이다.Spacer (A) (B) is formed between the first and second oil seals (10a, 10b), the spacer 20 is positioned to be filled with lubricating oil or grease, characterized in that the sealing property of the rotating shaft By lubricating the filled oil while improving oil pressure, the rotation of the rotating shaft can be smoothed and the power consumption can be minimized. In addition, if one oil seal is broken, the oil seal can act as a safety device as another oil seal. It is to ensure the long life and reliability of the product.

Description

이중 오일씰 구조Double oil seal structure

본 발명은 특수 목적용 펌프(예: 화학용, 고압 저유량의 펌프) 등의 유체기계 축봉장치에 적용되는 오일씰 구조에 관한 것으로서, 특히 축봉장치의 회전축에 두개의 오일씰을 서로 마주보도록 한 후 그 사이에 스페이서를 위치시키고 생성되는 공간에 오일이나 그리스를 충진하여 회전축의 밀봉성을 향상시키고자 하는 이중 오일씰 구조에 관한 것이다.The present invention relates to an oil seal structure applied to a fluid mechanical shaft device, such as a pump for a special purpose (for example, chemical, high pressure low flow pump), in particular two oil seals facing each other on the rotating shaft of the shaft device The present invention relates to a double oil seal structure in which a spacer is disposed between and filled with oil or grease in a space to improve sealing property of a rotating shaft.

종래 오일씰 구조는 도 1에 도시된 바와같이, 회전축(1)이 케이싱(2)을 관통하는 유체기계에 있어서,In the conventional oil seal structure, as shown in Figure 1, in the fluid machine in which the rotating shaft 1 passes through the casing 2,

상기 회전축(1)의 주위에 위치시키면서 케이싱(2) 내부에 원통형의 씰박스(3)를 설치하고, 상기 씰박스(3) 안에 고무제품과 같은 연성재료로서 한개의 오일씰(4)을 설치하였다.A cylindrical seal box 3 was installed inside the casing 2 while being positioned around the rotating shaft 1, and one oil seal 4 was installed in the seal box 3 as a soft material such as a rubber product. .

이때, 상기 오일씰(4)의 외부면이 씰박스(3)에 밀착되고, 회전축(1)은 상기 오일씰(4)에 위치한 스프링(5)에 의해 상기 오일씰(4)의 내부와 밀착되므로서, 상기 케이싱(2) 내부의 유체가 외부로 새거나 혹은 상기 케이싱(2) 내에 유입되는 것을 방지하였다.At this time, the outer surface of the oil seal 4 is in close contact with the seal box 3, the rotating shaft 1 is in close contact with the inside of the oil seal 4 by the spring (5) located in the oil seal (4), The fluid inside the casing 2 is prevented from leaking out or flowing into the casing 2.

즉, 상기 케이싱(2)과 상대운동을 하는 회전축(1)의 주위에 있어서, 유체의 유통량을 제한하도록 한 것이다.In other words, the flow rate of the fluid is limited around the rotating shaft 1 which is in relative motion with the casing 2.

그러나, 종래의 오일씰 구조에 있어, 회전축(1)이 오일씰(4)에 있는 스프링(5)에 의해 오일씰(4) 내부에 밀착되어 누설을 방지하는 구조로 되어 있고, 상기 오일씰(4)의 재료가 보통 고무제품과 같은 연성재료로 되어 있어 시간이 지남에 따라 회전하는 회전축(1)과 오일씰(4) 내부 사이에 마찰에 의한 열 발생과 마모로 인하여 내부 압력에 견디지 못하고 유체가 누설되므로서, 유체기계 전체의 신뢰성과 성능저하를 초래하게 되는 문제점이 있었다.However, in the conventional oil seal structure, the rotating shaft 1 is in close contact with the inside of the oil seal 4 by the spring 5 in the oil seal 4 to prevent leakage, and the material of the oil seal 4 Is made of a soft material such as a rubber product, and due to heat generation and abrasion caused by friction between the rotating shaft (1) and the oil seal (4) rotating over time, the fluid does not withstand internal pressure and leaks, There is a problem that causes the reliability and performance of the entire fluid machine.

따라서, 본 발명은 이와같은 문제점을 해결하기 위해 안출된 것으로서 이의 목적은, 축봉장치의 회전축에 두개의 오일씰을 서로 마주보도록 하고 그 사이에 스페이서를 위치시킨 후 생성되는 공간에 오일이나 그리스를 충진하도록 하므로서, 회전축의 밀봉성을 향상시키면서 충진된 오일의 윤활작용으로 회전축의 회전을 원활히 하여 동력소모를 최소화하고자 하는데 있는 것이다.Therefore, the present invention has been made to solve the above problems, the object of the two oil seals to face each other on the axis of rotation of the shaft device and to place the spacer therebetween to fill the oil or grease in the resulting space Thus, while improving the sealability of the rotating shaft is to minimize the power consumption by smoothly rotating the rotating shaft by the lubrication action of the oil filled.

다른 목적으로는, 유막이 밀폐의 효과도 가져줄수 있도록 한개의 오일씰이 파손되었을 경우 또 다른 오일씰로서 안전장치 역활을 수행하도록 하여 제품의 신뢰성 및 수명을 오래 지속시키고자 하는데 있는 것이다.Another purpose is to maintain the reliability and long life of the product by acting as a safety device as another oil seal if one oil seal is broken so that the oil film can also have the effect of sealing.

도 1은 종래 오일씰 구조를 보인 단면도.1 is a cross-sectional view showing a conventional oil seal structure.

도 2는 본 발명 이중 오일씰 구조를 보인 단면도.Figure 2 is a cross-sectional view showing a double oil seal structure of the present invention.

도 3은 본 발명 이중 오일씰 구조의 부분 분해 단면도.Figure 3 is a partial exploded cross-sectional view of the present double oil seal structure.

도 4는 본 발명 이중 오일씰 구조의 다른 실시예.Figure 4 is another embodiment of the present invention double oil seal structure.

상기 목적 달성을 위한 본 발명 이중 오일씰 구조는 첨부된 도 2 및 도 3에 도시된 바와같이,Double oil seal structure of the present invention for achieving the above object is shown in Figures 2 and 3 attached,

회전축(1)이 케이싱(2)을 관통하고, 상기 케이싱(2) 내부에 원통형의 씰박스(3)가 설치되는 유체기계에 있어서,In a fluid machine in which a rotating shaft (1) penetrates through a casing (2), and a cylindrical seal box (3) is installed inside the casing (2),

상기 회전축(1)에 고무제품과 같은 연성재료로서 스프링(5)이 포함되는 제 1 및 제 2 오일씰(10a)(10b)을 서로 마주보도록 설치하고,The first and second oil seals 10a and 10b including the spring 5 as a soft material such as a rubber product are installed on the rotary shaft 1 so as to face each other.

상기 제 1 및 제 2 오일씰(10a)(10b) 사이에 공간(A)(B)을 형성하여 윤활작용하는 오일이나 그리스가 충진될수 있도록 스페이서(20)를 위치시킨 것을 특징으로 하는 것이다.Spacer (A) (B) is formed between the first and second oil seals (10a) (10b) characterized in that the spacer 20 is positioned to be filled with lubricating oil or grease.

이와같이 구성된 본 발명 이중 오일씰 구조의 동작에 대하여 설명하면 다음과 같다.Referring to the operation of the double oil seal structure of the present invention configured as described above are as follows.

먼저, 회전축(1)에 고무제품과 같은 연성재료로서 스프링(5)이 포함되는 제 1 및 제 2 오일씰(10a)(10b)을 서로 마주보도록 설치하면, 스프링(5)에 의해 회전축(1)이 상기 제 1 및 제 2 오일씰(10a)(10b)의 내부면과 밀착하게 된다.First, when the first and second oil seals 10a and 10b including the spring 5 as the flexible material such as a rubber product are installed on the rotating shaft 1 so as to face each other, the rotating shaft 1 is provided by the spring 5. The inner surface of the first and second oil seals 10a and 10b is in close contact with each other.

이후, 상기 제 1 및 제 2 오일씰(10a)(10b) 사이에 스페이서(20)를 위치시키면, 상기 스페이서(20)에 의해 제 1 및 제 2 오일씰(10a)(10b)에는 공간(A)(B)이 형성된다.Subsequently, when the spacer 20 is positioned between the first and second oil seals 10a and 10b, the space 20 may be formed in the first and second oil seals 10a and 10b by the spacer 20. B) is formed.

이때, 상기 공간(A)(B)에 오일(예: 화학용 펌프에서는 내화학용 오일 등)이나 그리스를 충진시킨 후, 제 1 및 제 2 오일씰(10a)(10b)을 케이싱(2)의 씰박스(3)에 장착시키면, 상기 씰박스(3)는 제 1 및 제 2 오일씰(10a)(10b)의 외부면과 밀착하게 되는 것이다.At this time, after filling the space (A) (B) with oil (for example, chemical oil in the chemical pump, etc.) or grease, the first and second oil seal (10a) (10b) is sealed in the casing (2) When attached to the box 3, the seal box 3 is in close contact with the outer surface of the first and second oil seal (10a) (10b).

따라서, 유체기계의 회전축(1)이 회전을 하는 경우, 상기 스페이서(20)에 의해 제 1 및 제 2 오일씰(10a)(10b)에 형성되는 공간(A)(B)에 충진된 오일이나 그리스가 엷은 유막을 형성하면서 윤활작용을 하게 되므로서, 상기 회전축(1)의 회전이 원활하게 수행될수 있도록 하는 한편, 상기 케이싱(2) 내부의 유체 유통량을 제어하여 유체의 누설이나 혹은 상기 케이싱(2) 내로 유입되는 것을 보다 효율적으로 방지시키게 되는 것이다.Therefore, when the rotating shaft 1 of the fluid machine rotates, oil or grease filled in the spaces A and B formed in the first and second oil seals 10a and 10b by the spacer 20. Since the lubricating action is performed while forming a thin oil film, the rotation of the rotating shaft 1 can be smoothly performed, while the flow rate of the fluid inside the casing 2 is controlled to prevent fluid leakage or the casing 2. Will be more effectively prevented from entering.

한편, 도 4는 상기 설명된 본 발명 이중 오일씰 구조의 다른 실시예를 보인 것으로서,On the other hand, Figure 4 as showing another embodiment of the present invention the double oil seal structure described above,

스페이서(20)가 없는 상태에서 제 1 및 제 2 오일씰(10a)(10b)을 회전축(1)에 설치하되, 오일이나 그리스가 충진되는 하나의 공간(A)만이 형성되도록 상기 제 1 및 제 2 오일씰(10a)(10b)을 같은 방향으로 적층하여 설치시킨 것으로, 본 발명 도 2에서와 동일부분에 대하여는 동일부호로 표시하여 그 중복되는 설명을 생략하였다.The first and second oil seals 10a and 10b are installed on the rotating shaft 1 in the absence of the spacer 20, but the first and second oil seals are formed such that only one space A filled with oil or grease is formed. The oil seals 10a and 10b are stacked and installed in the same direction, and the same parts as in FIG. 2 of the present invention are denoted by the same reference numerals, and description thereof will not be repeated.

이상에서 설명한 바와같이 본 발명은 축봉장치의 회전축에 두개의 오일씰을 서로 마주보도록 하고 그 사이에 스페이서를 위치시킨 후 생성되는 공간에 오일이나 그리스를 충진하도록 하므로서, 회전축의 밀봉성을 향상시키면서 충진된 오일의 윤활작용으로 회전축의 회전을 원활히 하여 동력소모를 최소화하는 한편, 유막이 밀폐의 효과도 가져줄수 있도록 한개의 오일씰이 파손되었을 경우 또 다른 오일씰로서 안전장치 역활을 수행하도록 하여 제품의 신뢰성 및 수명을 오래 지속시키는 효과가 있는 것이다.As described above, the present invention allows the two oil seals to face each other on the rotary shaft of the shaft device and fills the oil or grease in the space created after placing the spacer therebetween, thereby improving the sealing property of the rotary shaft. Lubrication of the rotating shaft facilitates the rotation of the rotating shaft, minimizing power consumption, and if one oil seal is broken so that the oil film can also be sealed, it acts as a safety device as another oil seal. The effect is long lasting.

Claims (2)

케이싱(2)이 관통되어 회전하는 회전축(1)과, 내무에 오일씰이 체결되도록 원통형의 씰박스가 형성된 케이싱(2)으로 이루어진 유체기계에 있어서, 회전측(1)에 관통된 케이싱(2)의 내부 씰박스(3)에 서로 마주보도록 체결되어 유체의 유입 및 누설을 방지하기 의한 오일씰(10a)(10b) 과, 상기 서로 마주보도록 설치된 오일씰(10a)(10b)) 사이에 위치하여 오일씰(10a)(10b)사이에 공간을 형상시키기 위한 스페이서(20)와,In a fluid machine consisting of a rotating shaft (1) through which the casing (2) rotates and a casing (2) formed with a cylindrical seal box to fasten the oil seal to the inner abutment, the casing (2) penetrating through the rotating side (1) The oil seal (10a) (10b) and the oil seal (10a, 10b) installed to face each other are fastened so as to face each other to the inner seal box (3) of the oil seal ( A spacer 20 for forming a space between 10a and 10b, 상기 케이싱(2)이 회전축(1)에서 원활하게 회전되도록 오일 또는 그리스가 충진되도록 스페이서(20)에 의해 오일씰(10a)(10b)사이에 공간( A)(B)이 형성된 것을 특징으로 하는 이중 오일씰구조.Space (A) (B) is formed between the oil seal (10a) (10b) by the spacer 20 so that the oil or grease is filled so that the casing (2) rotates smoothly on the rotating shaft (1) Oil seal structure. 케이싱(2)이 관통되어 회전하는 회전축(1)과, 내무에 오일씰이 체결되도록 원통형의 씰박스가 형성된 케이싱(2)으로 이루어진 유체기계에 있어서, 회전측(1)에 관통된 케이싱(2)의 내부 씰박스(3)에 서로 동일방향으로 적층되게 체결하여 유체의 유입 및 누설을 방지하기 위한 오일씰(10a)(10b) 과, 상기 케이싱(2)이 회전축(1)에서 원활하게 회전되도록 오일 또는 그리스가 충진되도록 동일방향으로 적층된 오일씰(10a)(10b))에 하나의 공간(A)이 형성된 것을 특징으로 하는 이중 오일씰 구조.In a fluid machine consisting of a rotating shaft (1) through which the casing (2) rotates and a casing (2) formed with a cylindrical seal box to fasten the oil seal to the inner abutment, the casing (2) penetrating through the rotating side (1) Oil seals 10a and 10b for fastening and stacking the same in the same direction to the inner seal box 3 of the fluid to prevent the inflow and leakage of the fluid, so that the casing 2 rotates smoothly on the rotating shaft 1 Or double oil seal structure, characterized in that one space (A) is formed in the oil seal (10a) (10b) laminated in the same direction so that the grease is filled. 상기 케이싱(2)이 회전축(1)에서 원활하게 회전되도록 오일 또는 그리스가 충진되도록 스페이서(20)에 의해 오일씰(10a)(10b)사이에 공간( A)(B)이 형성된 것을 특징으로 하는 이중 오일씰구조.Space (A) (B) is formed between the oil seal (10a) (10b) by the spacer 20 so that the oil or grease is filled so that the casing (2) rotates smoothly on the rotating shaft (1) Oil seal structure.
KR1019970053830A 1997-10-20 1997-10-20 Double oil seal structure Expired - Fee Related KR100262365B1 (en)

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KR100262365B1 true KR100262365B1 (en) 2000-08-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220325756A1 (en) * 2019-10-08 2022-10-13 Nidec Gpm Gmbh Steam leakage compact bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220325756A1 (en) * 2019-10-08 2022-10-13 Nidec Gpm Gmbh Steam leakage compact bearing
US11746827B2 (en) * 2019-10-08 2023-09-05 Nidec Gpm Gmbh Steam leakage compact bearing

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