KR100817280B1 - Door opening and closing device of heating furnace - Google Patents

Door opening and closing device of heating furnace Download PDF

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Publication number
KR100817280B1
KR100817280B1 KR1020010066381A KR20010066381A KR100817280B1 KR 100817280 B1 KR100817280 B1 KR 100817280B1 KR 1020010066381 A KR1020010066381 A KR 1020010066381A KR 20010066381 A KR20010066381 A KR 20010066381A KR 100817280 B1 KR100817280 B1 KR 100817280B1
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South Korea
Prior art keywords
door
heating furnace
charging
auxiliary
main door
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KR1020010066381A
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Korean (ko)
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KR20030034698A (en
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최병학
김도승
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주식회사 포스코
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids, removable covers
    • F27D1/1858—Doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals
    • F27D2099/0078—Means to minimize the leakage of the furnace atmosphere during charging or discharging

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

본 발명은 제철소의 압연공정중 슬라브를 압연하기 전에 적정온도로 가열시키는 가열로의 도어 개폐장치에 관한 것이다.

본 발명은 가열로의 장입구 혹은 추출구측 바닥면인 받침대에 수직입설된 한쌍의 가이더와; 상기 가이더를 따라 전동수단에 의해 승하강가능하게 설치되고, 그 일면에는 사선방향으로 작동홈이 형성된 안내브라켓이 다수 돌출형성된 보조도어와; 상기 작동홈에 이를 따라 활주가능하게 끼움되는 작동환을 갖고 상기 보조도어와 연동되면서 상기 장입구 혹은 추출구를 개폐가능하게 설치된 메인도어를 포함하여 구성된다.

본 발명에 따르면, 가열로의 장입구 혹은 추출구의 밀폐력이 향상되어 열의 누출을 막아 현저한 에너지절감 효과는 물론 열과 직접 접촉되는 메인도어에는 내화물이 충전되어 있으므로 열에 의한 변형이 거의 없으며, 장입구 혹은 추출구 모두에 동일한 구조물을 설치할 수 있어 유지보수가 용이한 장점이 있다.

Figure R1020010066381

The present invention relates to a door opening and closing apparatus of a heating furnace for heating to an appropriate temperature before rolling the slab during the rolling process of steel mills.

The present invention comprises a pair of guiders vertically placed in the pedestal which is the bottom of the charging or extraction port side of the heating furnace; An auxiliary door provided to be movable up and down by the transmission means along the guider, and having one side of the guide bracket protruding with a plurality of guide grooves formed in an oblique direction; The operating groove is configured to include a main door installed to be slidably fitted along the operating groove and interlocked with the auxiliary door to open and close the charging or extracting opening.

According to the present invention, the sealing force of the charging inlet or the extraction port of the heating furnace is improved to prevent leakage of heat, thereby remarkably reducing energy, and refractory is filled in the main door which is in direct contact with the heat, so that there is almost no deformation due to heat. The same structure can be installed in all the spheres, so there is an easy maintenance.

Figure R1020010066381

Description

가열로의 도어 개폐장치{DOOR OPENING AND CLOSING DEVICE OF HEATING FURNACE}DOOR OPENING AND CLOSING DEVICE OF HEATING FURNACE}

도 1 및 도 2는 종래 기술에 따른 가열로의 도어 개폐장치를 보인 예시도,1 and 2 is an exemplary view showing a door opening and closing device of a heating furnace according to the prior art,

도 3은 본 발명 장치의 설치상태 사시도,Figure 3 is a perspective view of the installation state of the device of the present invention,

도 4는 본 발명 장치의 도어를 보인 일부 사시도,4 is a partial perspective view showing the door of the device of the present invention;

도 5 및 도 6은 본 발명 장치의 작동상태도.5 and 6 is an operating state of the device of the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 가열로 20 : 전동수단10: heating furnace 20: power transmission means

22 : 체인 30 : 메인도어22: chain 30: main door

32 : 작동환 37 : 내화물32: operating ring 37: refractory

38 : 수평안내롤러 39 : 롤러가이드홈38: horizontal guide roller 39: roller guide groove

40 : 보조도어 41 : 가이더40: auxiliary door 41: guider

43 : 안내브라켓 47 : 보조실린더43: guide bracket 47: auxiliary cylinder

48 : 작동홈48: working groove

본 발명은 제철소의 압연공정중 슬라브를 압연하기 전에 적정온도로 가열시키는 가열로의 도어 개폐장치에 관한 것이다.The present invention relates to a door opening and closing apparatus of a heating furnace for heating to an appropriate temperature before rolling the slab during the rolling process of steel mills.

통상, 가열로는 고열로 유지되어야 하므로 슬라브가 장입되고 추출되는 부위에는 도어 수단을 이용하여 적절히 밀폐하게 된다.In general, the heating furnace should be maintained at a high temperature, so that the slab is charged and extracted, and is properly sealed using a door means.

즉, 도 1의 (A),(B)에 도시된 바와 같이, 가열로(1)의 장입구 상부에 전동수단(2)을 설치하여 도어(3)를 승하강시켜 가열로(1)의 장입구를 개폐함으로써 푸셔(4)에 의해 슬라브(S)가 가열로(1) 내부로 안내 장입된 후의 열 누출을 막게 된다.That is, as shown in (A), (B) of Figure 1, by installing the transmission means 2 in the upper part of the charging opening of the heating furnace 1 by raising and lowering the door (3) of the heating furnace (1) By opening and closing the charging opening, the heat leakage after the slab S is guided and charged into the heating furnace 1 by the pusher 4 is prevented.

그러나, 가열로(1)는 내부의 고온으로 인하여 전체가 내화벽돌로 축조되어 있고 또한 장입구나 추출구를 밀폐하는 도어의 가열로(1)측 면에는 내화물이 충전되어야 하므로 일반적인 기계 가공된 부품과 같이 정밀하지 못하므로 이 부위에서 주된 열 방출(누설)이 일어나게 된다.However, since the furnace 1 is entirely constructed of refractory bricks due to the high temperature inside, refractory is to be filled in the side of the furnace 1 of the door that seals the charging rod or the extraction port. It is not as precise as it is, and the main heat release (leakage) occurs in this area.

특히, 도어(3)는 전동수단(2)에 의해 와이어로프나 체인과 같은 줄걸이 작업을 통해 개폐되는 구조이므로 어느 정도 흔들림을 갖게 되고 이로 인해 가열로(1)의 장입구나 추출구를 완벽하게 밀폐할 수 없으며 이를 해소하기 위해 도어(3)를 최대한 밀착시키게 되면 도어(3) 내부의 내화물이나 가열로(1)의 내화벽돌이 서로 부딪혀 파손됨으로써 열 누출을 더욱 가속시키는 문제점을 유발하게 된다.In particular, the door (3) is a structure that is opened and closed by a wire rope, such as a wire rope or chain by the transmission means (2) has a certain amount of shaking, which makes the filling or extraction port of the heating furnace (1) perfectly If the door 3 is in close contact with each other in order to solve the problem, the refractory bricks of the door 3 and the refractory bricks of the heating furnace 1 collide with each other, thereby causing a problem of further accelerating heat leakage.

이러한 단점을 해결하기 위한 많은 노력들이 경주되어 도 2의 (C),(D)에 도시된 바와 같은 다수의 분리판(5a,5b)을 링크(6)로 연결하여 도어(3')를 구성한 구조가 공개된 바 있으나, 이는 상대적으로 열이 높지 않은 장입구 측에서는 큰 무리 없이 사용될 수 있음에 반해 1300℃ 이상이 유지되므로 열관리가 특히 긴밀히 요구되는 추출구 측에서는 전혀 사용할 수 없는 구조(슬라브(S)가 추출도는 구조이므로 도어가 장입시와 는 반대를 유지하게 되어 오히려 열 누출을 가속시키게 됨)이므로 그 효용성이 현저히 떨어지는 단점이 있었다.Many efforts have been made to solve these disadvantages, and the plurality of separation plates 5a and 5b as shown in FIGS. 2C and 2D are connected by the link 6 to form the door 3 '. Although the structure has been disclosed, it can be used on the side of the charging inlet which is not relatively high, but it can be used without great effort, so the structure can not be used at all on the extracting side where the thermal management is particularly required (slab (S)). Because the extraction degree is a structure, the door maintains the opposite direction of charging, and thus accelerates the heat leakage.

본 발명은 상술한 바와 같은 종래 기술이 갖는 제반 문제점을 감안하여 이를 해결하고자 창출된 것으로, 가열로의 장입구는 물론 추출구 모두에 도어 및 가열로의 파손없이 도어를 최대 밀착시킬 수 있도록 하여 열 누출을 극소화시킨 가열로의 도어 개폐장치를 제공함에 그 목적이 있다.The present invention was created in view of the above-described problems of the prior art as described above, and heats the door so that the door can be brought into close contact with each other without damaging the door and the heating furnace. It is an object of the present invention to provide a door opening and closing device of a furnace that minimizes leakage.

본 발명의 상기한 목적은 가열로의 장입구 혹은 추출구측 바닥면인 받침대에 수직입설된 한쌍의 가이더와; 상기 가이더를 따라 전동수단에 의해 승하강가능하게 설치되고, 그 일면에는 사선방향으로 작동홈이 형성된 안내브라켓이 다수 돌출형성된 보조도어와; 상기 작동홈에 이를 따라 활주가능하게 끼움되는 작동환을 갖고 상기 보조도어와 연동되면서 상기 장입구 혹은 추출구를 개폐가능하게 설치된 메인도어를 포함하여 구성되는 것을 특징으로 하는 가열로의 도어 개폐장치를 제공함에 의해 달성된다.The above object of the present invention is a pair of guiders vertically placed on the pedestal which is the bottom surface of the charging or extraction port side of the heating furnace; An auxiliary door provided to be movable up and down by the transmission means along the guider, and having one side of the guide bracket protruding with a plurality of guide grooves formed in an oblique direction; The door opening and closing device of the heating furnace characterized in that it comprises a main door installed to be slidably fitted in accordance with the operation groove and interlocked with the auxiliary door to open and close the charging or extraction port. By providing.

이하에서는, 첨부도면을 참고하여 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 도어 개폐장치의 사시도이고, 도 4는 본 발명에 따른 도어 개폐장치의 도어 구조를 보인 요부 사시도이다. 3 is a perspective view of a door opening and closing device according to the present invention, Figure 4 is a perspective view showing the main part of the door structure of the door opening and closing device according to the present invention.                     

도 3 및 도 4에 따르면, 본 발명 도어 개폐장치는 가열로(10)의 장입구 및 추출구 모두에 서로 대칭되게 구성된다.According to FIG. 3 and FIG. 4, the door opening and closing device of the present invention is configured to be symmetrical with each other at both the charging opening and the extraction opening of the heating furnace 10.

가열로(10)의 장입구 측을 기준으로 그 구성에 대해 설명하면 다음과 같다.The configuration thereof will be described with reference to the charging side of the heating furnace 10 as follows.

먼저, 가열로(10)의 장입구측 상부에는 기존과 같은 전동수단(20)이 설치된다.First, the same transmission means 20 as the existing is installed on the charging side of the heating furnace 10.

상기 전동수단(20)은 구동모터와 같은 것으로 드럼(21)을 구동시켜 드럼(21)과 연결된 스프라켓(23)을 회전시켜 체인(22)을 권취, 권해함으로써 도어(D)를 승하강시킬 수 있는 구조를 이룬다.The transmission means 20 is the same as the driving motor to drive the drum 21 to rotate the sprocket 23 connected to the drum 21 to wind up and recommend the chain 22 to raise and lower the door (D). Form a structure.

도어(D)는 메인도어(30)와 보조도어(40)로 구분된다.The door D is divided into a main door 30 and an auxiliary door 40.

메인도어(30)는 도 4의 (E)에 도시된 바와 같이, 내부에 내화물(37)이 충전되고, 외측면에는 다수의 브라켓(31)이 돌설되며, 상기 브라켓(31)에는 롤러샤프트(34)에 의해 지지되면서 부시(33)가 개재된 작동환(32)이 회전가능하게 삽설된 구조를 이룬다.As shown in (E) of FIG. 4, the main door 30 is filled with a refractory 37 therein, and a plurality of brackets 31 are protruded from the outer surface thereof, and a roller shaft is provided on the bracket 31. While being supported by 34, the operating ring 32 with the bush 33 interposed therebetween forms a rotatably inserted structure.

상기 내화물(37)은 와이스터드(Y-STUD)와 캐스터블이 복합 충전된 구조를 가짐이 바람직하다.The refractory 37 preferably has a structure in which a Y-STUD and a castable are compositely filled.

상기 메인도어(30)의 하단면 양측에는 수평안내롤러(38)가 설치되어 중량물인 상기 메인도어(30)의 이동성을 용이하게 하여 준다.Horizontal guide rollers 38 are provided at both sides of the lower surface of the main door 30 to facilitate mobility of the main door 30 which is a heavy object.

아울러, 상기 브라켓(31)의 양측에는 한쌍의 연결링크(35)가 고정된다.In addition, a pair of connecting links 35 are fixed to both sides of the bracket 31.

보조도어(40)는 도 4의 (F)에 도시된 바와 같이, 상기 메인도어(30)와 대응되는 크기를 갖고 그 길이 일부에는 하중을 줄이기 위한 관통공(49)이 형성되며, 상단면에는 상술한 체인(22)이 걸림될 수 있는 체인고리(44)가 형성된다.As shown in (F) of FIG. 4, the auxiliary door 40 has a size corresponding to that of the main door 30, and a part of the length of the auxiliary door 40 is formed with a through hole 49 for reducing a load. The chain ring 44 to which the above-described chain 22 can be formed is formed.

상기 관통공(49)과 인접한 위치인 상기 메인도어(30)의 브라켓(31)과 대응되는 부위에는 사각형상의 안내브라켓(43)이 다수 돌출되며, 상기 안내브라켓(43)에는 사선방향으로 작동홈(48)이 형성된다.A plurality of rectangular guide brackets 43 protrude from portions corresponding to the brackets 31 of the main door 30, which are adjacent to the through holes 49, and the guide brackets 43 operate in an oblique direction. 48 is formed.

안내브라켓(43) 양측에는 상기 메인도어(30)에 고정된 연결링크(35)와 대응되게 또다른 연결링크(45)가 고정되며, 상기 연결링크(35,45)에는 보조실린더(46)가 설치된다.On both sides of the guide bracket 43, another connection link 45 is fixed to correspond to the connection link 35 fixed to the main door 30, and the auxiliary cylinder 46 is connected to the connection links 35 and 45. Is installed.

상기 보조실린더(46)는 그 후단이 상기 연결링크(45)에 회전가능하게 핀 고정되고 그 실린더로드(47)는 메인도어(30)의 연결링크(35)에 고정되어 상기 보조도어(40)에 지지된 채 필요시 상기 메인도어(30)을 더욱 전방으로 가압할 수 있도록 구성된다.The auxiliary cylinder 46 is the rear end of the pin is rotatably fixed to the connecting link 45 and the cylinder rod 47 is fixed to the connecting link 35 of the main door 30 to the auxiliary door 40 It is configured to press the main door 30 further forward if necessary while being supported at.

또한, 상기 보조도어(40)의 양측면에는 다수의 수직안내롤러(42)가 설치되는 바, 상기 수직안내롤러(42)는 가이더(41)에 내장되고 이 가이더(41)를 따라 상하방향으로 안내이동될 수 있다.In addition, a plurality of vertical guide rollers 42 are installed on both side surfaces of the auxiliary door 40, and the vertical guide rollers 42 are embedded in the guider 41 and guided vertically along the guider 41. Can be moved.

가이더(41)는 도 3의 예시와 같이, 상기 보조도어(40)의 양단과 결합가능한 형태로 슬라브(S)가 장입되는 장입구의 하단에 배설된 받침대(14)의 상면에 서로 거리를 두고 입설되는 구조를 갖는다.As shown in FIG. 3, the guider 41 may be spaced apart from each other on the upper surface of the pedestal 14 disposed at the lower end of the charging slot into which the slab S is charged in a form that can be coupled to both ends of the auxiliary door 40. It has a structure of standing up.

상기 받침대(14)의 길이 일부에는 길이방향과 직교되는 장입구측을 향해 한쌍의 롤러가이드홈(39)이 요입형성되는 바, 상기 롤러가이드홈(39)은 상술한 메인도어(30)의 하단에 설치된 수평안내롤러(38)가 대응설치되어 이동가능하게 안내하 는 부위이다.A pair of roller guide grooves 39 are formed in the length portion of the pedestal 14 toward the charging hole side perpendicular to the longitudinal direction, and the roller guide grooves 39 are formed at the lower end of the main door 30 as described above. Horizontal guide rollers 38 are installed on the corresponding portion is installed to guide the movement.

도 5 및 도 6은 가열로(10)의 추출구에 설치된 본 발명의 장치를 보인 단면도로서 장입구에도 동일한 구조로 설치된다.5 and 6 are cross-sectional views showing the apparatus of the present invention installed in the extraction port of the heating furnace 10, and is installed in the charging port in the same structure.

장입구 혹은 추출구의 외테두리에는 내화벽돌(11) 속에 'ㄷ'형상의 강재로된 지지부재(12)가 내장되고, 상기 지지부재(12)에는 내화성을 갖는 울(WOOL)(13)이 충전된다.In the outer edge of the charging or extraction port, a support member 12 made of 'c' shaped steel is embedded in the firebrick 11, and the support member 12 is filled with a fire (WOOL) 13 having fire resistance. do.

따라서, 상기 도어(D)중 메인도어(30)의 전면 외테두리는 상기 울(13)과 접촉가능한 상태에 놓이게 되고 그 밀착력이 더욱 향상될 수 있다.Accordingly, the front edge of the main door 30 of the door D may be in contact with the wool 13, and the adhesion thereof may be further improved.

이러한 구성으로 이루어진 본 발명의 작동관계를 설명하면 다음과 같다.Referring to the operating relationship of the present invention made of such a configuration as follows.

도 3을 참고하여 장입구측을 중심으로 먼저 설명하기로 한다.Referring to Figure 3 will be described first with respect to the charging side.

롤러테이블(70)을 타고 슬라브(S)가 도착하면 푸셔(80)가 상기 슬라브(S)를 가열로(10) 쪽으로 밀게 된다.When the slab S arrives on the roller table 70, the pusher 80 pushes the slab S toward the heating furnace 10.

슬라브(S)는 장입레일(50) 위를 미끄러져 가열로(10)의 장입구 내측에 마련된 워킹빔(미도시)에 안착되게 된다.The slab S slides on the charging rail 50 to be seated on a working beam (not shown) provided inside the charging opening of the heating furnace 10.

이때에는, 도어(D)가 상승된 상태에 있으며, 슬라브(S)의 장입과 동시에 도어(D)가 하강하게 된다.At this time, the door D is in an elevated state, and the door D is lowered at the same time as the slab S is charged.

여기에서, 도어(D)의 하강 동작은 장입구와 추출구 모두 동일하므로 도 5, 6을 중심으로 설명하기로 한다.Here, since the lowering operation of the door (D) is the same in both the charging port and the extraction port will be described with reference to Figs.

도어(D)가 하강되기전의 상태는 메인도어(30)의 자중에 의해 쳐진 상태, 즉 작동환(32)이 보조도어(40)의 안내브라켓(43)에 형성된 작동홈(48)의 사선방향 하 단측에 위치된 상태에 있게 된다.The state before the door D is lowered is the state struck by the weight of the main door 30, that is, the diagonal direction of the operation groove 48 in which the operation ring 32 is formed in the guide bracket 43 of the auxiliary door 40. It is in the state located on the lower side.

따라서, 메인도어(30)의 하단이 보조도어(40)의 하단보다 더 낮게 위치된 상태이다.Therefore, the lower end of the main door 30 is positioned lower than the lower end of the auxiliary door 40.

이어, 전동수단(20)에 의해 체인(22)이 권해되게 되면 도어(D)가 하강을 시작하게 되고, 보조도어(40)의 수직안내롤러(42)는 가이더(41)를 따라 수직하강하게 된다.Subsequently, when the chain 22 is recommended by the transmission means 20, the door D starts to descend, and the vertical guide roller 42 of the auxiliary door 40 vertically descends along the guider 41. do.

하강중 메인도어(30)이 하단, 즉 수평안내롤러(38)가 먼저 받침대(14)의 롤러가이드홈(39)에 안착되면서 하강동작을 멈추게 되고, 상기 작동홈(48)의 유격만큼 보조도어(40)는 더 하강하게 된다.As the main door 30 is lowered, that is, the horizontal guide roller 38 is first seated in the roller guide groove 39 of the pedestal 14, the lowering operation is stopped, and the auxiliary door is spaced as much as the play of the operation groove 48. 40 is further lowered.

보조도어(40)가 하강되어 받침대(14)의 상면에 닿는 과정에서 보조도어(40)와 메인도어(30)의 하단간 단차만큼 메인도어(30)가 밀리게 되는 바, 이때 상기 메인도어(30)의 작동환(32)은 상기 작동홈(48)을 따라 사선방향으로 밀려 올라가면서 장입구 혹은 추출구 측으로 더욱 밀착이동되게 되고 상기 보조도어(40)가 받침대(14)에 접촉되는 순간 최대 전진 밀착되어 장입구 혹은 추출구를 밀폐하게 된다.When the auxiliary door 40 is lowered to reach the upper surface of the pedestal 14, the main door 30 is pushed back by the step between the auxiliary door 40 and the lower end of the main door 30. At this time, the main door ( The operating ring 32 of 30) is pushed upward in the diagonal direction along the operating groove 48 to move more closely toward the charging hole or the extraction port side and at the moment the auxiliary door 40 contacts the pedestal 14, Closely adhering to seal the charging or extraction port.

이때, 상기 메인도어(30)의 전면 외테두리는 상기 울(13)에 정확하게 가압접촉되면서 밀착되게 된다.At this time, the front edge of the main door 30 is in close contact with the wool 13 while being in precise pressure contact.

도어(D)의 개방시에는 상술한 바와 정반대 동작됨으로써 개방이 가능하다.At the time of opening the door D, the door D can be opened by being operated in the opposite manner to the above.

아울러, 이와 같이 도어(D)의 자중에 의해 긴밀히 밀폐될 때에 설비의 노후화나 혹은 작동환(32)의 불량작동을 대비하여 상술한 보조실린더(47)가 설치되어 있다.In addition, the auxiliary cylinder 47 described above is provided in preparation for deterioration of the equipment or poor operation of the operating ring 32 when the door D is tightly sealed by the weight of the door D.

상기 보조실린더(47)는 도어(D)가 폐쇄된 후 정해진 압력에 이를때까지 다시한번 메인도어(30)를 밀어주는 방식으로 설치될 수도 있으며 혹은 설비의 노후화나 이상현상에 의해 상기 메인도어(30)의 밀폐력이 현저히 떨어짐을 감지한 후 수동조작에 의해 작동시킬 수도 있다.The auxiliary cylinder 47 may be installed in such a way as to push the main door 30 again until the predetermined pressure is reached after the door D is closed, or the main door ( It may be operated by manual operation after detecting the drop of sealing force of 30).

이상에서 상세히 설명한 바와 같이, 본 발명은 다음과 같은 효과를 제공한다.As described in detail above, the present invention provides the following effects.

첫째, 가열로의 장입구 혹은 추출구의 밀폐력이 향상되어 열의 누출을 막아 현저한 에너지절감 효과를 제공한다.First, the sealing force of the charging or charging port of the furnace is improved to prevent heat leakage and provide a significant energy saving effect.

둘째, 열과 직접 접촉되는 메인도어에는 내화물이 충전되어 있으므로 열에 의한 변형이 거의 없다.Second, since the refractory is filled in the main door that is in direct contact with heat, there is almost no deformation due to heat.

세째, 장입구 혹은 추출구 모두에 동일한 구조물을 설치할 수 있어 유지보수가 용이하다.Third, the same structure can be installed in both the charging port or the extraction port is easy to maintain.

Claims (5)

삭제delete 삭제delete 가열로(10)의 장입구 혹은 추출구측 바닥면인 받침대(14)에 수직입설된 한쌍의 가이더(41)와; 상기 가이더(41)를 따라 전동수단(20)에 의해 승하강가능하게 설치되고, 그 일면에는 사선방향으로 작동홈(48)이 형성된 안내브라켓(43)이 다수 돌출형성된 보조도어(40)와; 상기 작동홈(48)에 이를 따라 활주가능하게 끼움되는 작동환(32)을 갖고 상기 보조도어(40)와 연동되면서 상기 장입구 혹은 추출구를 개폐가능하게 설치된 메인도어(30)를 포함하는 가열로의 도어 개폐장치에 있어서;A pair of guiders 41 vertically inserted into a pedestal 14 which is a charging or extraction outlet side bottom surface of the heating furnace 10; An auxiliary door 40 having a plurality of guide brackets 43 protrudingly formed by the transmission means 20 along the guider 41, the guide brackets 43 having an operation groove 48 formed in an oblique direction on one surface thereof; Heated including the main door 30 having an operating ring 32 slidably fitted in the operating groove 48 and interlocked with the auxiliary door 40 so as to open and close the charging hole or the extraction port. In the door opening of the furnace; 상기 메인도어(30)는 그 내부에 와이스터드와 캐스터블이 복합된 내화물이 충전된 것을 특징으로 하는 가열로의 도어 개폐장치.The main door 30 is a door opening and closing device of the heating furnace, characterized in that the refractory is a combination of the wisterd and castable inside. 제3항에 있어서, 상기 메인도어(30)는 그 전방 외테두리가 장입구 혹은 추출구의 외테두리에 삽설된 울(13)과 가압접촉되어 밀폐되는 것을 특징으로 하는 가열로의 도어 개폐장치.4. The door opening and closing device of a heating furnace according to claim 3, wherein the main door (30) is hermetically contacted with a wool (13) inserted in an outer edge of a charging hole or an extracting hole. 제3항에 있어서, 상기 메인도어(30)와 보조도어(40) 사이에는 보조도어(40)측에서 메인도어(30)측으로 가압가능한 보조실린더(37)가 부설된 것을 특징으로 하는 가열로의 도어 개폐장치.The heating furnace of claim 3, wherein an auxiliary cylinder (37) pressurized from the auxiliary door (40) side to the main door (30) is provided between the main door (30) and the auxiliary door (40). Door opener.
KR1020010066381A 2001-10-26 2001-10-26 Door opening and closing device of heating furnace KR100817280B1 (en)

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KR101316730B1 (en) * 2012-03-16 2013-10-10 주식회사 포스코 Door apparatus for heating furnace
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CN107642996A (en) * 2017-10-31 2018-01-30 苏州久亿通热工技术有限公司 Furnace door sealing device, oven door sealing system and sintering furnace
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CN102445082B (en) * 2010-10-14 2013-08-21 佛山市通润热能科技有限公司 Connection structure of furnace door opening and closing system and aluminum rod
KR101377232B1 (en) 2012-06-25 2014-03-20 (주)포스코 Device of protection against heat for leveller door

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