KR880002121Y1 - Mechamical seals having flowing backward fan - Google Patents

Mechamical seals having flowing backward fan Download PDF

Info

Publication number
KR880002121Y1
KR880002121Y1 KR2019850009620U KR850009620U KR880002121Y1 KR 880002121 Y1 KR880002121 Y1 KR 880002121Y1 KR 2019850009620 U KR2019850009620 U KR 2019850009620U KR 850009620 U KR850009620 U KR 850009620U KR 880002121 Y1 KR880002121 Y1 KR 880002121Y1
Authority
KR
South Korea
Prior art keywords
ring
mechamical
seals
fan
rings
Prior art date
Application number
KR2019850009620U
Other languages
Korean (ko)
Other versions
KR870002434U (en
Inventor
강국래
Original Assignee
강국래
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 강국래 filed Critical 강국래
Priority to KR2019850009620U priority Critical patent/KR880002121Y1/en
Publication of KR870002434U publication Critical patent/KR870002434U/en
Application granted granted Critical
Publication of KR880002121Y1 publication Critical patent/KR880002121Y1/en

Links

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • 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
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3208—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings
    • F16J15/3212—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings with metal springs
    • 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
    • F16J15/54—Other sealings for rotating shafts

Landscapes

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

Abstract

내용 없음.No content.

Description

누액 역류팬이 형성된 미캐니컬 시일Mechanical seal with leakage backflow fan

제1도 본 고안의 일부파절 사시도.1 is a partially broken perspective view of the present invention.

제2도 본 고안의 실시예를 보인 단면도.2 is a cross-sectional view showing an embodiment of the present invention.

제3도 본 고안 역류팬의 부분확대 시시도.3 is an enlarged exploded view of the present invention backflow fan.

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

1 : 시일보디(Seal-Body) 2, 2', 3, 7 : 오링홈1: Seal-Body 2, 2 ', 3, 7: O-ring groove

4, 4', 8 : 외부오링 5 : 내부오링4, 4 ', 8: External O-ring 5: Internal O-ring

6 : 유격공간부 11 : 임페라6: clearance space part 11: impera

12 : 역류팬 13 : 역류나선부12: counterflow fan 13: countercurrent spiral portion

14 : 환상 요홈부14: annular groove

본 고안은 각종 산업용 펌프의 축봉장치인 미캐니컬시일의 개량고안에 관한 것이다.The present invention relates to an improved design of a mechanical seal, which is a shaft device for various industrial pumps.

종래 사용된 미캐니컬시일은 시일보디 선단에 역류홀(또는 스파이럴기어)을 형성 하므로서 축을 통한 누설액을 회전원심력으로 역류시켜 누설압력을 감소하고 시일보디에 감합된 오링(O-ring)이 누설액을 차단하여 기밀상태를 유지하는 것이었으나, 이러한 종래의 시일은 슬러리(Slurry)가 역류홀이나 스파이럴기어의 이빨사이를 폐쇄할 경우에 누설되는 압력을 역류시키는 기능이 악화되어 효과가 감소되고 외부오링과 오링홈 사이에도 슬러리가 끼어 이들을 마모시키며 또한 양 흡입펌프일 경우 외부오링이 냉각수에 의하여 축소 되므로 펌프내에 진공상태가 유지되지 못하여 작동이 불가능한 등의 단점이 있었다.Conventionally used mechanical seals form a backflow hole (or spiral gear) at the tip of the seal body, so that the leakage fluid through the shaft is flowed back to the rotational centrifugal force to reduce the leakage pressure and the O-ring fitted to the seal body leaks. However, the conventional seal was used to maintain the airtight state by blocking the liquid. However, the effect of reducing the leakage pressure when the slurry closes between the backflow hole or the teeth of the spiral gear is deteriorated and the effect is reduced. Slurry was sandwiched between the O-ring and the O-ring groove to wear them, and in the case of both suction pumps, the external O-ring was reduced by the coolant, so there was a disadvantage in that the vacuum was not maintained in the pump and the operation was impossible.

본 고안은 이러한 단점을 시정하여 시일보디 선단부정면에 환상톱니형 역류임펠러를 형성하므로서 슬러리가 끼어들 수 없도록 하고 시일보디 외면에도 역류나선부와 환상효홈부를 형성하여 누설압력을 이중으로 감소시킬 수 있도록 하였으며 오링과 오링홈 사이에 유격공간을 형성하여 마모를 방지토록 하고 소형오링으로 시일의 기밀성이 높도록 구성한 것으로서 첨부도면에 따라 상세히 설명하면 다음과 같다.The present invention corrects these shortcomings to form an annular serrated countercurrent impeller on the seal tip end face so that the slurry cannot be interrupted and to form a countercurrent spiral and an annular effect groove on the outer seal body to reduce the leakage pressure. The clearance gap is formed between the O-ring and the O-ring groove to prevent abrasion and the airtightness of the seal is small by the small O-ring.

시일보디(1)에 환상오링홈(2)(3)을 요설하여 외부오링(4)과 내부오링(5)을 감합시켜 장착하고 셋트 스크류(9)를 나합하여 펌프의 회전축(10)에 고정시킨 공지의 시일(S)에 있어서 시일보디(1) 선단부 정면에 "제3도"에서와 같이 환상톱니형 역류팬(12)을 환설한 임펠러(11)를 형성하고 시일보디(1) 외주면에도 누액의 진입방향과 반대방향으로 형성된 역류나선부(13)를 나설하고 외부오링(4)(4') 사이에 환상요홉부(14)를 요설하였으며 오링홈(2)(2')의 직경을 외부오링(4)(4')보다 다소 크게 하여 외부오링(4)(4')과 오링홈(2)(2') 사이에 유격공간부(6)가 형성되도록 하되 최초 외부오링(8)은 타외부오링(4)(4')보다 구경(L)을 크게하여 스퍼핑박스(15)와의 밀착도를 높이고 직경(R)은 작게하여 마모율과 수축율이 낮도록 하여서 된 것이다.Annular o-ring grooves (2) and (3) are provided on the seal body (1) to fit the outer o-rings (4) and the inner o-rings (5), and the set screw (9) is screwed in to fix the rotary shaft (10) of the pump. In the known seal S, the impeller 11 which replaces the annular serrated counterflow fan 12 is formed in front of the tip of the seal body 1, and the outer peripheral surface of the seal body 1 is also formed. The reverse flow spiral part 13 formed in the direction opposite to the entry direction of the leaked liquid was formed, and the annular recessed part 14 was provided between the outer o-rings 4 and 4 ', and the diameter of the o-ring grooves 2, 2' was increased. Slightly larger than the outer o-rings (4) and (4 ') so that the clearance space (6) is formed between the outer o-rings (4) (4') and the o-ring grooves (2) (2 '), but the first outer o-ring (8) The larger the diameter (L) than the other outer ring (4) (4 ') to increase the degree of close contact with the spuffing box 15, the diameter (R) is to be a low wear rate and shrinkage rate.

미 설명부호 (16)은 스페어 오링이다.Reference numeral 16 is a spare O-ring.

이와 같이 구성된 본 고안은 펌프가 작동하면 역류팬(12)의 회전으로 누액이 진입하는 반대방향으로 역류가 발생되어 누설압력이 1차 감압되며 역류나선부(13)의 회전으로 다시 반대방향으로 역류되면서 2차 감압되고 최초 외부오링(8)과 다음 외부오링(4')을 넘어선 누액은 환상요홈부(14)에서 3차 감압되므로 극소의 압력으로 누설되는 누액은 그 뒷쪽에 감합된 외부오링(4)에 의하여 완벽하게 차단되는 것이다.When the pump is operated, the present invention configured as described above generates a reverse flow in the opposite direction in which the leakage fluid enters by the rotation of the backflow fan 12 so that the leakage pressure is firstly decompressed and the reverse flow is reversed again by the rotation of the reverse flow spiral part 13. As the secondary pressure is reduced and the liquid leakage beyond the first external o-ring (8) and the next external o-ring (4 ') is the third pressure reduced in the annular recess 14, the leakage leaked at the minimum pressure is fitted to the rear of the external o-ring ( It is completely blocked by 4).

따라서 본 고안은 역류팬(12)이 톱니형으로 되어있고 시일보디(1)의 선단 정면에 형성되어 있으므로 슬러리가 역류팬(12)에 끼워 역류효과를 감소시킬 우려가 없으며 시일보디(1) 외주면에서도 역류나선부(13)와 환상요홈부(14)에 의하여 이중으로 누설압력을 감압시켜 주므로서 완벽한 기밀상태를 유지할 수 있고 또 외부오링(4)(4')과 오링홍(2)(2') 사이에 유격 공간부(6)가 있으므로 슬러리가 이들 사이에 끼어 마모시킬 우려가 없으며 최초 외부오링(8)이 타외부오링(4)(4')보다 구경(L)이 크므로 스터핑박스(15)와의 밀착도가 높고 직경(R)이 작아 수축율이 낮으므로 종래와 같이 냉각수에 의한 외부오링의 수축으로 펌프내의 진공상태가 깨어지는 일이 없도록 하는 등의 효과가 있는 것이다.Therefore, in the present invention, since the backflow fan 12 is sawtooth-shaped and is formed at the front end of the seal body 1, there is no fear that the slurry is inserted into the backflow fan 12 to reduce the backflow effect and the outer surface of the seal body 1 is reduced. In addition, it is possible to maintain perfect airtightness by reducing the leakage pressure by double the reverse flow spiral portion 13 and the annular recess 14, and also the outer o-ring (4) (4 ') and O-ring hong (2) (2 There is no risk of slurry getting caught between them because there is a clearance space (6) between the ') and the stuffing box because the initial outer ring (8) is larger in diameter (L) than the other outer rings (4) and (4'). Since the adhesion to (15) is high and the diameter R is small and the shrinkage rate is low, there is an effect such that the vacuum in the pump is not broken by shrinkage of the external O-ring by the cooling water as in the prior art.

Claims (1)

내외부오링(4)(5)이 감합된 통상의 시일보디(1) 선단 정면에 "제3도"에서와 같은 환상톱니형 역류팬(12)을 환설하고 시일보디(1) 외주면에도 역류나선부(13)와 환상요홈부(14)를 형성하며 외부오링(4)(4')(8)과 오링홈(2)(2')(7) 사이에 유격 공간부(6)를 형성하고 최초 외부오링(8)은 타외부오링(4)(4')보다 구경(L)은 크게 직경(R)은 작게 하여서된 누액 역류팬이 형성된 미캐니컬시일.The annular serrated backflow fan 12 as shown in FIG. 3 is installed at the front of the conventional seal body 1, in which the inner and outer o-rings 4, 5 are fitted, and the reverse flow spiral part is also provided on the outer circumferential surface of the seal body 1. (13) and the annular groove (14) and the clearance gap (6) between the outer O-ring (4) (4 ') (8) and the O-ring groove (2) (2') (7) The outer o-ring 8 is a mechanical seal in which a leaky liquid backflow fan is formed so that the diameter L is larger than that of the other outer o-rings 4 and 4 '.
KR2019850009620U 1985-07-24 1985-07-24 Mechamical seals having flowing backward fan KR880002121Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850009620U KR880002121Y1 (en) 1985-07-24 1985-07-24 Mechamical seals having flowing backward fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850009620U KR880002121Y1 (en) 1985-07-24 1985-07-24 Mechamical seals having flowing backward fan

Publications (2)

Publication Number Publication Date
KR870002434U KR870002434U (en) 1987-03-17
KR880002121Y1 true KR880002121Y1 (en) 1988-06-16

Family

ID=19244271

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019850009620U KR880002121Y1 (en) 1985-07-24 1985-07-24 Mechamical seals having flowing backward fan

Country Status (1)

Country Link
KR (1) KR880002121Y1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100512520B1 (en) * 2002-01-22 2005-09-07 정성화 Mixer for Remicon or agricultural scraps protecting leakage fluid

Also Published As

Publication number Publication date
KR870002434U (en) 1987-03-17

Similar Documents

Publication Publication Date Title
US2670973A (en) Shaft seal
US4884945A (en) Dynamic seal arrangement for impeller pump
US3664760A (en) Centrifugal pump
US5827041A (en) Pump and seal arrangement to prevent leakage due to fluid boiling and cavitation
US2590759A (en) Rotary seal
JPH0211655Y2 (en)
JP2009185968A (en) Oil seal
FI80512B (en) ANORDINATION WITH ENTIRE GLOVING.
KR880002121Y1 (en) Mechamical seals having flowing backward fan
US4733873A (en) Mechanical seal
US2711136A (en) Seal
CN108708976A (en) Zero leakage non-contact mechanical seal structure
KR880003112A (en) Variable Capacity Gear Pump
KR910000174B1 (en) Shaft seal for a compressor
KR102329533B1 (en) Structure of check valve
JPS63131877A (en) Internal contact gear type rotary pump
JPS58122398A (en) Seal device of pump shaft
CN114439943B (en) Spiral seal structure and compressor
KR0181398B1 (en) Sealing unit of pump
US5249942A (en) Oil pump
JP2005009584A (en) Sealing device
KR830002042Y1 (en) Leakage Backflow Type Mechanical Seal
US11788542B2 (en) Tandem seal pump
JPS5910448Y2 (en) Shaft sealing device
KR19980013736U (en) Wear ring structure of centrifugal pump

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19990608

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee