KR100779708B1 - Device for pulverized coal preventive sticking to feeder - Google Patents

Device for pulverized coal preventive sticking to feeder Download PDF

Info

Publication number
KR100779708B1
KR100779708B1 KR1020010045578A KR20010045578A KR100779708B1 KR 100779708 B1 KR100779708 B1 KR 100779708B1 KR 1020010045578 A KR1020010045578 A KR 1020010045578A KR 20010045578 A KR20010045578 A KR 20010045578A KR 100779708 B1 KR100779708 B1 KR 100779708B1
Authority
KR
South Korea
Prior art keywords
flow
shaft
fixed
pulverized coal
shafts
Prior art date
Application number
KR1020010045578A
Other languages
Korean (ko)
Other versions
KR20030010908A (en
Inventor
이종권
Original Assignee
주식회사 포스코
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 주식회사 포스코 filed Critical 주식회사 포스코
Priority to KR1020010045578A priority Critical patent/KR100779708B1/en
Publication of KR20030010908A publication Critical patent/KR20030010908A/en
Application granted granted Critical
Publication of KR100779708B1 publication Critical patent/KR100779708B1/en

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/08—Devices for emptying storage spaces as completely as possible
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B65G2201/042—Granular material

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

본 발명은 용광로의 대체 연료인 미분탄을 고착이나 막힘없이 일정량 절출할 수 있도록 개선된 절출피더의 미분탄 고착 방지장치에 관한 것으로, 미분탄을 일정량씩 절출하는 절출피더의 바닥면에 상호 교대로 배열된 제1,2유동바와; 상기 제1,2유동바의 각 일단을 회전가능하게 고정하도록 상기 절출피더의 배출측 양측면에 고정된 고정축과; 상기 고정축의 대향측 제1유동바들을 연결하는 제1유동축과; 상기 제1유동축과 인접하게 설치되어 상기 제2유동바들을 연결하는 제2유동축과; 상기 절출피더의 배출구 대향측 하방에 고정된 구동모터와; 상기 구동모터의 회전축에 서로 다른 위상을 갖고 고정된 제1,2편심축과; 상기 제1,2편심축과 제1,2유동축을 각각 연결하는 제1,2크랭크축을 포함하여 구성된다.The present invention relates to an apparatus for preventing pulverization of pulverized coal, which is improved to cut a predetermined amount of pulverized coal, which is an alternative fuel of a blast furnace, without being stuck or blocked, and which is alternately arranged on the bottom surface of the cutting feeder which cuts pulverized coal by a predetermined amount. First and second flow bars; A fixed shaft fixed to both sides of the discharge side of the cutting feeder so as to rotatably fix each end of the first and second flow bars; A first flow shaft connecting the first flow bars on the opposite side of the fixed shaft; A second flow shaft installed adjacent to the first flow shaft and connecting the second flow bars; A drive motor fixed below the outlet side of the cutting feeder; First and second eccentric shafts fixed to the rotation shafts of the driving motor with different phases; And first and second crank shafts connecting the first and second eccentric shafts and the first and second flow shafts, respectively.

본 발명에 따르면, 절출피더의 바닥면에 미분탄이 고착되지 않게 되어 원활한 미분탄 절출작업을 수행할 수 있고, 적절한 양의 미분탄 절출작업이 수행되므로 후속공정에서의 미분탄 재고 확보가 용이하고, 이에 따라 고로의 노황안정, 연료비를 절감시키는 효과를 제공한다.According to the present invention, fine powder is not stuck to the bottom surface of the cutting feeder, so that fine powder cutting operation can be performed smoothly, and an appropriate amount of fine powder cutting operation is carried out, thus making it easy to secure pulverized coal inventory in a subsequent process. Provides the effect of stabilizing aging and reducing fuel costs.

Description

절출피더의 미분탄 고착 방지장치{DEVICE FOR PULVERIZED COAL PREVENTIVE STICKING TO FEEDER}Pulverized coal preventing device of cutting feeder {DEVICE FOR PULVERIZED COAL PREVENTIVE STICKING TO FEEDER}

도 1은 종래 미분탄 절출피더를 보인 개략적인 종단면도,1 is a schematic longitudinal sectional view showing a conventional pulverized coal cutting feeder,

도 2는 본 발명 장치가 설치된 상태의 사시도,2 is a perspective view of a state in which the present invention device is installed,

도 3은 본 발명 장치의 요부 확대 사시도,3 is an enlarged perspective view of main parts of the present invention device;

도 4는 본 발명 장치의 작동상태 단면도.Figure 4 is a cross-sectional view of the 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

2 : 절출피더 16 : 고정축2: cutting feeder 16: fixed shaft

20,40 : 유동바 22,42 : 크랭크축20,40 flow bar 22,42 crankshaft

24,44 : 편심축 26,46 : 유동축24,44: eccentric shaft 26,46: flow shaft

50 : 구동모터 52 : 회전축50: drive motor 52: rotating shaft

60 : 간격유지링60: spacing ring

본 발명은 용광로의 대체 연료인 미분탄을 고착이나 막힘없이 일정량 절출할 수 있도록 개선된 절출피더의 미분탄 고착 방지장치에 관한 것이다. The present invention relates to an apparatus for preventing pulverized coal stuck in an improved feeder that is capable of cutting a predetermined amount of pulverized coal, which is an alternative fuel of a blast furnace, without being stuck or blocked.                         

통상, 서지호퍼(SURGE HOPPER)에 저장된 콜(COAL)은 진동을 가하는 수단(이하 '가진수단'이라 함)을 구비한 절출피더에 의해 일정량 절출되어 콜호퍼로 수송된 후 밀(MILL)에서 파쇄 건조되어 고로로 취입되게 된다.In general, the COAL stored in the SURGE HOPPER is cut out by a cutting feeder having a means for applying vibration (hereinafter referred to as 'acceleration means'), transported to the call hopper, and then crushed in a mill. It is dried and blown into the blast furnace.

그런데, 도 1의 도시와 같이, 절출피더(2)의 바닥면에는 항상 콜(C)이 적재되어 있고 서지호퍼(1)에 저장된 콜의 하중을 받고 있기 때문에 특히 다량의 미분과 수분이 함유된 콜(C)의 일부가 절출피더(2)의 바닥면에 고착되어 고착탄(5)을 형성함으로써 가진수단(3)과 탄성스프링(4)에 의해 절출피더(2)에 진동을 가하더라도 그 절출되는 양은 줄어들게 된다.However, as shown in FIG. 1, since the call C is always loaded on the bottom surface of the cutting feeder 2 and under the load of the call stored in the surge hopper 1, a large amount of fine powder and water are contained. A part of the call C is fixed to the bottom surface of the cutting feeder 2 to form a fixed coal 5 so as to vibrate the cutting feeder 2 by the excitation means 3 and the elastic spring 4. The amount of cut is reduced.

더구나, 이러한 수단을 장시간 사용하면 할수록 고착탄(5)의 누적량이 많아져 절출공간이 더욱더 축소되면서 심할경우에는 절출불량을 초래하게 된다.In addition, the longer the use of such means, the greater the cumulative amount of the fixed coal 5, the more the cutting space is further reduced, causing severe cut-outs.

특히, 절출불량이 초래되면 후속공정에서 재고량 부족으로 인해 설비의 휴지기간이 길어져 생산성이 현저히 저하되게 된다.In particular, if a poor cutting out results in a shortage of equipment due to lack of inventory in a subsequent process, productivity is significantly reduced.

본 발명은 상술한 바와 같은 종래 기술이 갖는 제반 문제점을 감안하여 이를 해결하고자 창출한 것으로, 절출피더의 바닥면에 고착되는 미분탄을 지속적으로 유동시켜 고착되지 못하도록 방해함으로써 미분탄의 원활한 절출작용을 유도할 수 있도록 한 절출피더의 미분탄 고착 방지장치를 제공함에 그 목적이 있다.The present invention has been made in view of the above-described problems of the prior art as described above, and induces a smooth cutting action of the pulverized coal by interfering with pulverizing the pulverized coal stuck to the bottom surface of the feed feeder to prevent it from being fixed. It is an object of the present invention to provide an apparatus for preventing pulverized coal coalescing of a cutting feeder.

본 발명의 상기한 목적은 미분탄을 일정량씩 절출하는 절출피더의 바닥면에 상호 교대로 배열된 제1,2유동바와; 상기 제1,2유동바의 각 일단을 회전가능하게 고정하도록 상기 절출피더의 배출측 양측면에 고정된 고정축과; 상기 고정축의 대향측 제1유동바들을 연결하는 제1유동축과; 상기 제1유동축과 인접하게 설치되어 상기 제2유동바들을 연결하는 제2유동축과; 상기 절출피더의 배출구 대향측 하방에 고정된 구동모터와; 상기 구동모터의 회전축에 서로 다른 위상을 갖고 고정된 제1,2편심축과; 상기 제1,2편심축과 제1,2유동축을 각각 연결하는 제1,2크랭크축을 포함하여 구성되는 것을 특징으로 하는 절출피더의 미분탄 고착 방지장치를 제공함에 의해 달성된다.The above object of the present invention is the first and second flow bars arranged alternately on the bottom surface of the cutting feeder for cutting off the pulverized coal by a predetermined amount; A fixed shaft fixed to both sides of the discharge side of the cutting feeder so as to rotatably fix each end of the first and second flow bars; A first flow shaft connecting the first flow bars on the opposite side of the fixed shaft; A second flow shaft installed adjacent to the first flow shaft and connecting the second flow bars; A drive motor fixed below the outlet side of the cutting feeder; First and second eccentric shafts fixed to the rotation shafts of the driving motor with different phases; The first and second eccentric shaft and the first and second flow shaft are achieved by providing an apparatus for preventing pulverized coal, characterized in that it comprises a first and second crank shaft, respectively.

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 2는 본 발명에 따른 미분탄 고착 방지장치의 설치상태를 보인 사시도이고, 도 3은 도 2의 요부 확대 사시도이다.Figure 2 is a perspective view showing an installation state of the coal dust preventing device according to the present invention, Figure 3 is an enlarged perspective view of the main portion of FIG.

도 2 내지 도 3에 따르면, 본 발명 장치는 서지호퍼(1)의 하방에 연통되게 배치된 절출피더(2)의 바닥면에 다수의 제1,2유동바(20,40)를 배설하여서 이루어진다.According to FIGS. 2 to 3, the apparatus of the present invention is formed by disposing a plurality of first and second flow bars 20 and 40 on the bottom surface of the cutting feeder 2 disposed in communication with the surge hopper 1. .

상기 제1유동바(20)는 홀수열을 이루도록 하고, 제2유동바(40)는 짝수열을 이루도록 하되 이들은 서로 미세한 유격을 두고 교번 유동가능하게 설치된다.The first flow bar 20 to form an odd row, the second flow bar 40 to form an even row, but they are installed so as to be alternately flow with a fine clearance to each other.

즉, 상기 제1,2유동바(20,40)는 절출피더(2)의 양측면에 고정된 고정축(16)상에 회전가능하게 고정되며, 제1,2유동바(20,40) 사이에는 간격유지링(60)이 개재되어 이들 사이를 미세하게 이격시키게 된다.That is, the first and second flow bars 20 and 40 are rotatably fixed on the fixed shaft 16 fixed to both sides of the cutting feeder 2, and between the first and second flow bars 20 and 40. The interval maintaining ring 60 is interposed to finely space between them.

상기 고정축(16)의 대향측 절출피더(2)의 하부공간에는 구동모터(50)가 설치되고, 상기 구동모터(50)의 회전축(52)은 베어링블럭(54)에 의해 회전가능하게 지 지되며, 또한 상기 회전축(52) 상에는 서로 다른 위상을 갖는 제1,2편심축(24,44)이 고정된다.A drive motor 50 is installed in the lower space of the opposite side cutting feeder 2 of the fixed shaft 16, and the rotation shaft 52 of the drive motor 50 is rotatably supported by the bearing block 54. First and second eccentric shafts 24 and 44 having different phases are fixed on the rotation shaft 52.

상기 제1,2편심축(24,44)은 대략 90°내지는 180°어긋나게 고정됨이 바람직하다.Preferably, the first and second eccentric shafts 24 and 44 are fixedly offset by approximately 90 degrees to 180 degrees.

홀수열을 이루는 상기 제1유동바(20)들은 상기 고정축(16)의 대향단들이 제1유동축(26)에 삽입되어 고정되는 바, 이를 위해 상기 제1유동바(20)의 고정축(16) 대향단 하면에는 연장편(28)이 돌출형성되고 상기 연장편(28)을 관통하여 제1유동축(26)이 연결된다.The first flow bars 20 forming an odd-numbered column are opposite ends of the fixed shaft 16 are inserted into and fixed to the first flow shaft 26. For this, the fixed shaft of the first flow bar 20 is fixed. (16) On the opposite end, an extension piece 28 protrudes and penetrates the extension piece 28 to connect the first flow shaft 26.

상기 제1유동축(26)에는 상기 제1편심축(24) 간을 연결하는 제1크랭크축(22)이 고정된다.A first crank shaft 22 connecting the first eccentric shaft 24 is fixed to the first flow shaft 26.

한편, 짝수열을 이루는 상기 제2유동바(40)들은 상기 고정축(16)의 대향단들이 제2유동축(46)에 삽입되어 고정되는 바, 이를 위해 상기 제2유동바(40)의 고정축(16) 대향단에는 그 단부에서 하방향으로 수직절곡된 연장편(48)이 형성되고 상기 연장편(48)을 관통하여 제2유동축(46)이 연결된다.On the other hand, the second flow bars 40 forming an even row are opposite ends of the fixed shaft 16 are inserted and fixed to the second flow shaft 46, for this purpose of the second flow bar 40 On the opposite end of the fixed shaft 16 is formed an extension piece 48 that is vertically bent downward at its end and penetrates the extension piece 48 to connect the second flow shaft 46.

상기 제2유동축(46)에는 상기 제2편심축(44) 간을 연결하는 제2크랭크축(42)이 고정된다.A second crankshaft 42 for connecting the second eccentric shaft 44 is fixed to the second flow shaft 46.

여기에서, 상기 제1,2크랭크축(22,42)간의 간섭을 배제하기 위해 상기 연장편(28,48)의 위치 및 형상을 달리하였다.Here, in order to exclude the interference between the first and second crankshafts 22 and 42, the positions and shapes of the extension pieces 28 and 48 were changed.

또한, 상기 제1,2유동바(20,40)는 미분탄 절출방향으로 하향경사지게 배치함이 바람직한 바, 예컨대 고정축(16) 부분이 낮고 제1,2크랭크축(22,42)이 연결된 부분이 높게 배설하여 준다.In addition, the first and second flow bars 20 and 40 are preferably disposed to be inclined downward in the pulverized coal cutting direction, for example, a portion of the fixed shaft 16 is low and the first and second crank shafts 22 and 42 are connected to each other. This will excrete highly.

아울러, 상기 제1,2유동축(26,46)에도 상기 고정축(16)에 개재된 간격유지링(60)이 동일한 방식으로 개재됨이 바람직하다.In addition, it is preferable that the gap retaining ring 60 interposed in the first and second flow shafts 26 and 46 be interposed in the same manner.

이러한 구성으로 이루어진 본 발명은 다음과 같이 작동된다.The present invention made up of such a configuration works as follows.

도 4를 참조하면, 서지호퍼(1)를 통해 절출피더(2)로 장입된 미분탄은 상기 절출피더(2)에 장착된 가진수단에 의해 일정량씩 절출되게 된다.Referring to FIG. 4, the pulverized coal charged into the cutting feeder 2 through the surge hopper 1 is cut out by a predetermined amount by the excitation means mounted to the cutting feeder 2.

이러한 과정에서 구동모터(50)는 상시 구동되어 있으므로 그 회전축(52) 상에 고정된 제1,2편심축(24,44)은 항상 일정주기를 두고 상하방향으로 교번 유동하게 된다.In this process, since the driving motor 50 is always driven, the first and second eccentric shafts 24 and 44 fixed on the rotation shaft 52 always alternately flow in the vertical direction at regular intervals.

따라서, 상기 제1,2편심축(24,44)에 연결된 제1,2크랭크축(22,42) 및 이들과 연결된 제1,2유동바(20,40)가 지속적으로 교번 유동하게 된다.Therefore, the first and second crank shafts 22 and 42 connected to the first and second eccentric shafts 24 and 44 and the first and second flow bars 20 and 40 connected thereto are continuously flowing alternately.

이와 같이 유동되는 상면으로 장입된 미분탄은 그 장입압이 크더라도 절출피더(2)의 바닥면에 고착되지 못하게 된다.The pulverized coal charged into the upper surface flowing in this way is prevented from sticking to the bottom surface of the cutting feeder 2 even if its charging pressure is large.

즉, 고착현상이 유발되더라도 상하방향으로 항상 교번 유동하고 있는 제1,2유동바(20,40)에 의해 그 고착상태가 해제되게 되므로 미분탄을 원활하게 절출시킬 수 있게 된다.That is, even if a sticking phenomenon is caused, the stuck state is released by the first and second flow bars 20 and 40 which are always alternately flowing in the vertical direction, thereby smoothly cutting off the pulverized coal.

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

첫째, 절출피더의 바닥면에 미분탄이 고착되지 않게 되어 원활한 미분탄 절 출작업을 수행할 수 있다.First, the pulverized coal is not adhered to the bottom surface of the feed feed so that smooth pulverized coal cutting can be performed.

둘째, 적절한 양의 미분탄 절출작업이 수행되므로 후속공정에서의 미분탄 재고 확보가 용이하고, 이에 따라 고로의 노황안정, 연료비를 절감시키는 효과를 제공한다.Second, since the appropriate amount of fine coal cutting operation is performed, it is easy to secure the pulverized coal inventory in the subsequent process, thereby providing the effect of blast furnace stabilization and fuel cost reduction.

Claims (3)

미분탄을 일정량씩 절출하는 절출피더(2)의 바닥면에 상호 교대로 배열된 제1,2유동바(20,40)와;First and second flow bars 20 and 40 alternately arranged on the bottom surface of the cutting feeder 2 for cutting the pulverized coal by a predetermined amount; 상기 제1,2유동바(20,40)의 각 일단을 회전가능하게 고정하도록 상기 절출피더(2)의 배출측 양측면에 고정된 고정축(16)과;A fixed shaft 16 fixed to both sides of the discharge side of the cutting feeder 2 so as to rotatably fix each end of the first and second flow bars 20 and 40; 상기 고정축(16)의 대향측 제1유동바(20)들을 연결하는 제1유동축(26)과;A first flow shaft 26 connecting the first flow bars 20 on opposite sides of the fixed shaft 16; 상기 제1유동축(26)과 인접하게 설치되어 상기 제2유동바(20)들을 연결하는 제2유동축(46)과;A second flow shaft 46 installed adjacent to the first flow shaft 26 and connecting the second flow bars 20; 상기 절출피더(2)의 배출구 대향측 하방에 고정된 구동모터(50)와;A driving motor 50 fixed below the discharge port opposite side of the cutting feeder 2; 상기 구동모터(50)의 회전축(52)에 서로 다른 위상을 갖고 고정된 제1,2편심축(24,44)과;First and second eccentric shafts 24 and 44 having different phases and fixed to rotation shafts 52 of the drive motor 50; 상기 제1,2편심축(24,44)과 제1,2유동축(26,46)을 각각 연결하는 제1,2크랭크축(22,42)을 포함하여 구성되는 것을 특징으로 하는 절출피더의 미분탄 고착 방지장치.And a first and second crank shafts 22 and 42 connecting the first and second eccentric shafts 24 and 44 and the first and second flow shafts 26 and 46, respectively. To prevent pulverization of coal dust. 제1항에 있어서, 상기 고정축(16) 및 제1,2유동축(26,46)에는 상기 제1,2유동바(20,40)의 간격을 유지시키는 간격유지링(60)이 개재되는 것을 특징으로 하는 절출피더의 미분탄 고착 방지장치.According to claim 1, The fixed shaft 16 and the first and second flow shafts (26, 46) are interposed between the gap retaining ring 60 for maintaining the interval between the first and second flow bars (20, 40) Pulverized coal sticking prevention device of the cutting feeder, characterized in that the. 제1항에 있어서, 상기 제1,2유동바(20,40)는 절출피더(2)의 배출측을 향해 하향경사지게 배설되는 것을 특징으로 하는 절출피더의 미분탄 고착 방지장치.The apparatus of claim 1, wherein the first and second flow bars (20,40) are disposed to be inclined downward toward the discharge side of the cutting feeder (2).
KR1020010045578A 2001-07-27 2001-07-27 Device for pulverized coal preventive sticking to feeder KR100779708B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020010045578A KR100779708B1 (en) 2001-07-27 2001-07-27 Device for pulverized coal preventive sticking to feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020010045578A KR100779708B1 (en) 2001-07-27 2001-07-27 Device for pulverized coal preventive sticking to feeder

Publications (2)

Publication Number Publication Date
KR20030010908A KR20030010908A (en) 2003-02-06
KR100779708B1 true KR100779708B1 (en) 2007-11-26

Family

ID=27717035

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020010045578A KR100779708B1 (en) 2001-07-27 2001-07-27 Device for pulverized coal preventive sticking to feeder

Country Status (1)

Country Link
KR (1) KR100779708B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990026850U (en) * 1997-12-20 1999-07-15 이구택 Coal sticking prevention device in chute
KR20000008422U (en) * 1998-10-21 2000-05-15 이구택 Extraction feeder cleaning device of powder storage hopper
KR200210290Y1 (en) * 2000-08-04 2001-01-15 포항종합제철주식회사 An apparatus for removing adhered coal on deflector plate in coal hopper
KR200302009Y1 (en) * 2002-10-07 2003-01-24 현 영 박 apparatus of scraping for the greem onion cutted by a cutting machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990026850U (en) * 1997-12-20 1999-07-15 이구택 Coal sticking prevention device in chute
KR20000008422U (en) * 1998-10-21 2000-05-15 이구택 Extraction feeder cleaning device of powder storage hopper
KR200210290Y1 (en) * 2000-08-04 2001-01-15 포항종합제철주식회사 An apparatus for removing adhered coal on deflector plate in coal hopper
KR200302009Y1 (en) * 2002-10-07 2003-01-24 현 영 박 apparatus of scraping for the greem onion cutted by a cutting machine

Also Published As

Publication number Publication date
KR20030010908A (en) 2003-02-06

Similar Documents

Publication Publication Date Title
US20090020637A1 (en) Multiple roll crusher
US9687853B2 (en) Conjugate anvil hammer mill
US20140203122A1 (en) Roller jaw crusher system and method
US3211388A (en) Crusher with reciprocating movement
RU2212938C2 (en) Jawbreaker
KR100779708B1 (en) Device for pulverized coal preventive sticking to feeder
CA1258792A (en) Ballast cleaning machine
CN107670779B (en) A kind of ball mill and crushing material system
CN209222209U (en) A kind of hydraulic compound kibbler roll
KR20060102986A (en) Rotary type chute device of conveyor utility
US1096307A (en) Multiple-compartment rock-crusher.
US4215825A (en) Crusher with impacting bars
US2885157A (en) Material crushing and sizing means cooperable with reciprocating conveyor
US1813836A (en) Hammer crusher
CN218902133U (en) Breaker with safety protection function
KR101463304B1 (en) Apparatus for separating coal
CN219615757U (en) Breaker is used in porous brick manufacturing
CN210943445U (en) Hopper belt protection device under constant feeder
CN220737860U (en) Self-rotating needle type caking powder crusher
CN216368405U (en) Stable operation device with double output shafts for tailing recycling machine
JP6075064B2 (en) Belt cleaner
CN210064565U (en) Conveying belt material distribution adjusting device capable of reducing dust
CA1122947A (en) Single-roll crusher with blow bars
KR20020053270A (en) A slit chute with removing device for material attached to slit bar
JP2566883B2 (en) Leakage prevention device in crushed stone / aggregate feeder

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20111110

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20121116

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee