KR20030077226A - Spiral and axial heat flow type dryer - Google Patents

Spiral and axial heat flow type dryer Download PDF

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Publication number
KR20030077226A
KR20030077226A KR1020020016197A KR20020016197A KR20030077226A KR 20030077226 A KR20030077226 A KR 20030077226A KR 1020020016197 A KR1020020016197 A KR 1020020016197A KR 20020016197 A KR20020016197 A KR 20020016197A KR 20030077226 A KR20030077226 A KR 20030077226A
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South Korea
Prior art keywords
hot air
dryer
sludge
hollow shaft
spiral axial
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KR1020020016197A
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Korean (ko)
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KR100436985B1 (en
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김기태
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김기태
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Priority to KR10-2002-0016197A priority Critical patent/KR100436985B1/en
Publication of KR20030077226A publication Critical patent/KR20030077226A/en
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Publication of KR100436985B1 publication Critical patent/KR100436985B1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/30Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors
    • F26B17/32Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors the movement being in a horizontal or slightly inclined plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005Treatment of dryer exhaust gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00Drying solid materials or objects by processes involving the application of heat
    • F26B3/02Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18Sludges, e.g. sewage, waste, industrial processes, cooling towers

Abstract

PURPOSE: A spiral axial-flow type hot air dryer is provided to improve thermal efficiency, and to dry a lot of sludge by recovering residual hot air discharged from a hollow shaft and supplying the hot air again. CONSTITUTION: A dryer body(10) includes a sludge injection port(11) and a sludge discharge port for discharging dried sludge. Hollow shafts(20) are installed at the dryer body, and have a screw blade(21), and a through hole(22). Bearings support both sides of the hollow shafts. A distributor(31) distributes hot air to the hollow shafts. A cover(50) is installed at the upper part of the dryer body, and has an exhaust unit(51) for exhausting hot air and steam. A driving unit rotates the hollow shafts.

Description

나선 축류식 열풍 건조기{Spiral and axial heat flow type dryer}Spiral and axial heat flow type dryer}
본 발명은, 하·폐수 슬러지나 축산 분뇨 또는 음식 쓰레기 등과 같이 수분을 많이 함유하고 있는 슬러지(sludge)상의 건조대상물을 효율적으로 건조시키기 위한 나선 축류식 열풍 건조기에 관한 것이며, 자세하게는 스크류 블레이드가 외면에 설치되는 중공(中空)의 샤프트 내부로 버너에서 발생되는 고온의 열풍을 직접 공급함으로써 샤프트 외부면 및 스크류 블레이드와 접촉하는 슬러지를 가열하여 건조시키는 한편, 중공 샤프트의 표면에 다수의 통공을 형성하여 통공을 통하여 배출되는 열풍으로 슬러지의 건조효율을 높이고, 또한 중공 샤프트 끝 부분에서 배출되는 잔여 열풍을 회수하여 이를 건조기 본체에 공급함으로써 재차 슬러지를 건조하는 것을 특징으로 하는 나선 축류식 열풍 건조기에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spiral axial flow type hot air dryer for efficiently drying a sludge-like drying object containing a lot of water, such as sewage / wastewater sludge, livestock manure, or food waste. By supplying high temperature hot air generated by the burner directly into the hollow shaft installed in the shaft, the sludge in contact with the shaft outer surface and the screw blade is heated and dried, and a plurality of holes are formed in the hollow shaft surface. It relates to a spiral axial hot air dryer characterized by increasing the drying efficiency of the sludge with hot air discharged through the through hole, and further drying the sludge by collecting the remaining hot air discharged from the hollow shaft end and supplying it to the dryer body. .
일반적으로 하·폐수 슬러지나 축산분뇨, 음식물 쓰레기 등과 같은 유기성 오염물질은 수분함량이 많기 때문에 이송이나 보관이 어렵고, 매립 시 침출수의 발생이 많아 환경을 오염시키게 되므로 건조를 통하여 함수율을 낮추어 처리하는 것이 필수적이다.In general, organic contaminants such as sewage and wastewater sludge, livestock manure, and food waste are difficult to transport or store because they have a lot of water, and leachate is generated during landfill, which pollutes the environment. It is essential.
이러한 슬러지상의 오염물질을 처리하는 방안으로 크게 미생물을 이용하는 미생물학적 방법과, 열을 이용하여 슬러지를 건조시키는 물리적 방법이 있는데, 본 발명은 후자의 방법에 속하는 것이다.As a method for treating contaminants on sludge, there are microbiological methods using microorganisms and physical methods of drying sludge using heat, and the present invention belongs to the latter method.
이러한 열을 이용하여 슬러지를 물리적으로 건조시키는 방법으로는, 대한민국 등록특허공보 등록번호 제0120836호 개시된 바와 같이, 슬러지가 투입되는 본체 내부에 스크류를 설치하여 슬러지를 교반 및 이송시키는 한편, 본체 외부에서 본체 내부로 열풍을 공급하여 슬러지를 건조시키는 방법이 일반적인 기술로 채택되고 있으나, 이 기술은 슬러지와 열풍과의 열 교환이 작아 건조효율이 떨어지고 단시간에 충분한 건조가 이루어지지 못하는 문제점이 있으며, 이외에도 대한민국 공개특허공보 공개번호 특2001-0027512호와 같이 스크류의 축 내부에 오일을 충진하고 이를 전기 에너지로 가열하여 고온의 오일에서 발생하는 열로 슬러지를 건조시키는 기술과, 대한민국 등록실용신안공보 등록번호 제20-0204595호와 같이 로울러의 중공축에 고온의 스팀을 공급하여 그 열로 슬러지를 가열하여 건조시키는 기술이 알려져 있으나, 축 내부의 오일 또는 스팀의 열만으로 슬러지를 건조시키는 기술은, 본 발명과 같이 중공 샤프트에서 형성된 통공을 통하여 열풍을 직접 슬러지에 공급하여 슬러지를 건조시키는 것을 구성한 기술에 비하여 열 효율이 현저히 낮을 뿐만 아니라, 위 종래 기술들에서 본 발명과 같은 통공을 형성할 경우 오일이 누설되어 작동이 될 수 없거나, 스팀이 슬러지에 공급됨으로써 건조가 아니라 오히려 슬러지를 가습하게 되므로 통공을 형성할 수도 없는 기술인 점에서 본 발명과 근본적인 차이가 있다.As a method of physically drying the sludge using this heat, as disclosed in the Republic of Korea Patent Publication No. 0120836, by installing a screw inside the main body into which the sludge is injected, while stirring and transporting the sludge, while outside the main body The method of drying the sludge by supplying the hot air into the main body is adopted as a general technique, but this technology has a problem of low drying efficiency due to low heat exchange between the sludge and the hot wind and insufficient drying in a short time. As disclosed in Korean Laid-Open Patent Publication No. 2001-0027512, the oil is filled in the shaft of the screw and heated with electrical energy to dry the sludge with heat generated from high temperature oil, and the Republic of Korea Utility Model Publication No. 20 Hot steam, such as -0204595, is applied to the hollow shaft of the roller. It is known to dry the sludge by heating the sludge by heat, but the technique of drying the sludge only by the heat of oil or steam inside the shaft, by supplying hot air directly to the sludge through the through-hole formed in the hollow shaft as in the present invention Not only is the thermal efficiency significantly lower than that of the drying technique, but in the above-mentioned prior arts, when the through-holes are formed as in the present invention, the oil may not be leaked and operated, or the steam is supplied to the sludge, rather than the drying sludge. There is a fundamental difference from the present invention in that it is a technology that can not be formed through the humidification.
이상 살펴본 바와 같이 종래의 기술들은 투입되는 에너지가 슬러지의 건조에 효율적으로 사용되지 못하고 손실되는 부분이 많아 에너지 효율이 떨어질 뿐만 아니라, 건조속도가 느리기 때문에 동일량의 슬러지를 처리하기 위해서는 본 발명의건조기 보다 설비가 대형화되어야 하는 문제점이 있었다.As described above, the conventional technologies are not used efficiently for drying the sludge, and there are many parts that are lost, so that the energy efficiency is lowered, and the drying speed is low, so that the dryer of the present invention is treated to the same amount of sludge. There was a problem that the facilities must be larger.
본 발명은, 상기와 같은 종래 기술의 문제점을 해결하기 위하여, 중공 샤프트 내부로 버너에서 발생되는 고온의 열풍을 공급하여, 중공 샤프트의 외부면 및 스크류 블레이드와 접촉하는 슬러지를 가열하여 건조하는 한편, 중공 샤프트에 다수의 통공을 형성하여 통공을 통하여 배출되는 열풍이 슬러지에 직접 접촉되게 함으로써 건조를 촉진하고, 또한 중공 샤프트 끝 부분에서 배출되는 잔여 열풍을 회수하여 이를 건조기 본체에 다시 공급하여 재차 슬러지를 건조시킴으로써 에너지 효율을 향상시키고, 그로 인하여 소형의 설비로도 다량의 슬러지를 건조할 수 있도록 하는 나선 축류식 열풍 건조기를 제공하는 것이다.The present invention, in order to solve the problems of the prior art as described above, by supplying a high temperature hot air generated in the burner into the hollow shaft, while heating and drying the sludge in contact with the outer surface of the hollow shaft and the screw blade, Forming a plurality of through holes in the hollow shaft to facilitate the drying by the hot air discharged through the direct contact with the sludge, and also to recover the remaining hot air discharged from the end of the hollow shaft and to supply it to the dryer body again to the sludge again It is to provide a spiral axial flow type hot air dryer that improves energy efficiency by drying, thereby allowing a large amount of sludge to be dried even in a small installation.
도 1은 본 발명에 따른 나선 축류식 열풍 건조기의 전체 구성을 나타내는 사시도.1 is a perspective view showing the overall configuration of a spiral axial flow hot air dryer according to the present invention.
도 2는 본발명에 따른 나선 축류식 열풍 건조기에서 덮개를 떼어난 상태의 평면도.Figure 2 is a plan view of the cover removed state in the spiral axial hot air dryer according to the present invention.
도 3은 중공 샤프트 부분의 확대도.3 is an enlarged view of a hollow shaft portion;
도 4는 중공 샤프트를 회전시키는 구동장치를 나타내는 측면도.Figure 4 is a side view showing a drive for rotating the hollow shaft.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 건조기 몸체 11 : 슬러지 투입구10: dryer body 11: sludge inlet
12 : 슬러지 배출구 13 : 열풍 분사공12: sludge discharge port 13: hot air jet hole
20 : 중공 샤프트 21 : 스크류 블레이드20: hollow shaft 21: screw blade
22 : 통공 23 : 막힘 방지판22: through hole 23: blocking plate
24 : 잔여 열풍 공급관 30 : 버너24: residual hot air supply pipe 30: burner
31 : 분배기 40 : 모터31: distributor 40: motor
41 : 감속기 42 : 체인41: reducer 42: chain
43 : 구동기어 44 : 종동기어43: drive gear 44: driven gear
45 : 베어링 50 : 덮개45: bearing 50: cover
51 : 배기구 52 : 배기팬51 exhaust port 52 exhaust fan
상기의 목적을 달성하기 위한 본 발명에 따른 나선 축류식 열풍 건조기는, 내부에 중공 샤프트를 설치하고, 상부 일측(후술하는 버너 측)에 슬러지를 투입하는 슬러지 투입구를 형성하며, 슬러지 투입구가 설치되는 반대쪽 하부에는 건조된 슬러지를 배출하는 슬러지 배출구를 형성하고, 측면에는 중공 샤프트 끝 부분에서 배출되는 잔여 열풍을 회수하여 이를 다시 내부로 공급하는 잔여 열풍 분사공이 형성된 건조기 몸체와 ; 열풍을 발생시키는 버너 및 이를 중공 샤프트에 분배하는 분배기와 ; 리브린스 패킹과 같은 공지의 수단에 의하여 분배기의 열풍이 누설되지 않도록 하면서 분배기에 회전 가능하도록 설치되고, 상하·좌우 방향의 요동이 방지되도록 4점지지 베어링에 의하여 지지되며, 그 외면에 길이 방향으로 연속되게슬러지를 이송 및 교반시키고 슬러지와의 전열면적을 넓게 하는 스크류 블레이드가 설치되며, 내부를 흐르는 열풍이 슬러지에 직접 분사되도록 표면에 다수의 통공이 형성되고, 상기 통공이 슬러지에 의하여 막히지 않도록 막힘 방지판을 형성한 중공 샤프트와 ; 모터와 감속기 그리고 기어와 체인으로 되는 중공 샤프트를 회전시키는 구동장치와 ; 중공 샤프트의 열풍 배출구 쪽에 연결되어 잔여 열풍을 건조기 몸체에 재차 공급하는 잔여가스 공급관과 ; 건조기 몸체의 상부에 착탈 가능하게 설치되고, 그 상부에는 슬러지에서 증발된 증기와 열교환을 끝낸 열풍을 배출하는 배기구나 배기팬 등이 형성된 덮개로 구성됨을 특징으로 한다.The spiral axial flow type hot air dryer according to the present invention for achieving the above object, the hollow shaft is installed inside, to form a sludge inlet for injecting sludge into the upper one side (burner side described later), the sludge inlet is installed A dryer body having a sludge discharge port for discharging the dried sludge on the opposite lower side, and a residual hot wind spray hole for recovering the remaining hot air discharged from the hollow shaft end and supplying it back to the inside; A burner for generating hot air and a distributor for distributing it to the hollow shaft; It is installed so as to be rotatable to the dispenser while preventing the hot air of the dispenser from leaking by a known means such as rerinsing packing, and is supported by a four-point support bearing to prevent rocking in the up, down, left and right directions, and in the longitudinal direction on the outer surface thereof. Screw blades are installed to continuously transport and stir the sludge and widen the heat transfer area with the sludge, and a plurality of holes are formed on the surface so that the hot air flowing therein is directly injected into the sludge, and the holes are blocked from being blocked by the sludge. A hollow shaft having a prevention plate; A drive device for rotating the motor, the reducer, and the hollow shaft consisting of a gear and a chain; A residual gas supply pipe connected to the hot air outlet of the hollow shaft to supply the remaining hot air to the dryer body again; Removably installed on the upper part of the dryer body, the upper portion is characterized by consisting of a cover formed with an exhaust or exhaust fan for discharging steam evaporated from the sludge and the hot air after heat exchange.
이하, 첨부된 도면을 참조하여 본 발명에 따른 나선 축류식 열풍 건조기의 바람직한 실시형태를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the spiral axial flow hot air dryer according to the present invention.
먼저 도 1과 도 2는 각각 본 발명에 따른 나선 축류식 열풍 건조기의 전체 구성을 나타내는 사시도와 본 발명의 건조기를 위에서 내려다 본 평면도이다. 도면에 나타난 바와 같이 건조기 몸체(10)의 내부에는 중공 샤프트(20)를 설치하고, 건조기 몸체(10)의 상부 일측에는 슬러지를 투입하는 슬러지 투입구(11)를 형성하며, 슬러지 투입구(11)가 설치되는 반대쪽 하부에는 건조된 슬러지를 배출하는 슬러지 배출구(12)를 형성하고, 건조기 몸체(10)의 측면에는 중공 샤프트(20)의 끝 부분에서 배출되는 잔여 열풍을 회수하여 이를 다시 건조기 몸체(10) 내부로 공급하는 열풍 분사공(13)을 형성한다.1 and 2 are respectively a perspective view showing the overall configuration of a spiral axial flow hot air dryer according to the present invention and a top view of the dryer of the present invention from above. As shown in the figure, a hollow shaft 20 is installed inside the dryer body 10, and an upper side of the dryer body 10 forms a sludge inlet 11 for injecting sludge, and the sludge inlet 11 is provided. Sludge discharge port 12 for discharging the dried sludge is formed on the lower side opposite to the installation, and the remaining hot air discharged from the end of the hollow shaft 20 is recovered on the side of the dryer body 10 and again the dryer body 10 ) To form a hot air injection hole 13 to be supplied to the inside.
그리고 버너(30)에서 발생되는 열풍은 분배기(31)에서 중공 샤프트(20)로 분배되어 공급되며, 이때 회전하지 않는 공정체인 분배기(31)와 회전하는 중공 샤프트(20)는 리브린스 패킹(미도시)과 같은 공지의 수단에 의하여 분배기(31) 내부의 열풍이 외기로 누설되지 않으면서도, 중공 샤프트(20)는 회전이 가능하도록 구성된다.The hot air generated by the burner 30 is distributed to the hollow shaft 20 from the distributor 31, and the distributor 31, which is a non-rotating process body, and the rotating hollow shaft 20 are re-rinsed packing (not shown). The hollow shaft 20 is configured to be rotatable without hot air inside the distributor 31 leaking to the outside air by a known means such as H).
또한 중공 샤프트(20)는 회전하면서 상하·좌우 방향으로 요동이 방지되도록 베어링(45)에 의하여 지지되며, 상기 베어링은 4점지지 베어링을 사용하는 것이 바람직하다.In addition, the hollow shaft 20 is supported by the bearing 45 so as to prevent the swing in the vertical, left and right directions while rotating, the bearing is preferably used four-point bearing.
도 3은 중공 샤프트(20) 부분의 확대 도면이며, 중공 샤프트(20)의 외면에는 길이 방향으로 연속되게 슬러지를 이송 및 교반시키고, 슬러지와의 전열 면적을 넓게 하는 스크류 블레이드(21)가 설치되고, 또 중공 샤프트(20)의 내부와 외부를 관통하는 다수개의 통공(22)을 형성하여 중공 샤프트(20)의 내부를 흐르는 고온의 열풍이 중공 샤프트(20)의 외부에 존재하는 슬러지에 직접 분사되어 슬러지의 건조를 촉진하며, 상기 통공(22)이 슬러지에 의하여 막히지 않도록 중공 샤프트(20)의 표면에 막힘 방지판(23)을 형성하되, 상기 막힘 방지판(23)의 형상은 중공 샤프트(20)의 회전방향을 기준으로 앞쪽은 막히도록 하여 회전에 의하여 슬러지가 통공(22)을 막는 것을 방지하는 한편, 회전 방향의 뒤쪽 부분은 열려있어 열풍이 슬러지에 지속적으로 공급되도록 한다.3 is an enlarged view of the hollow shaft 20, a screw blade 21 is installed on the outer surface of the hollow shaft 20 to transfer and stir the sludge continuously in the longitudinal direction and to widen the heat transfer area with the sludge. In addition, a plurality of through holes 22 penetrating the inside and outside of the hollow shaft 20 to form a high temperature hot air flowing through the inside of the hollow shaft 20 is directly injected to the sludge existing outside the hollow shaft 20 To facilitate drying of the sludge, and to form the blockage preventing plate 23 on the surface of the hollow shaft 20 so that the through hole 22 is not blocked by the sludge, the shape of the blockage preventing plate 23 is hollow shaft ( The front side is blocked based on the rotation direction of 20) to prevent the sludge from blocking the through hole 22 by the rotation, while the rear part of the rotation direction is open to continuously supply hot air to the sludge.
도 4는 중공 샤프트(20)를 회전시키는 구동장치를 도시한 것이며, 본 발명의 구동장치는 모터(40)와 모터(40)의 회전을 감속시키는 감속기(41), 그리고 회전력을 전달하는 체인(42) 및 구동기어(43)와 종동기어(44)로 이루어지는 통상의 구동장치이며, 건조기 몸체(10)에 설치되는 중공 샤프트(20)가 1개일 경우에는 체인을통해서 전달되는 동력이 바로 중공 샤프트(20)에 전달되므로 상기의 구동기어(43)나 종동기어(44)는 필요 없게 되고, 도1 및 도2에 예시된 바와 같이 2개의 중공 샤프트(20)가 설치될 경우에는 구동기어(43)와 종동기어(44)가 서로 맞물리게 회전하도록 함으로써 상기 2개의 중공 샤프트(20)는 그 회전 방향이 서로 반대가 되도록 하는 것이 이송과 교반 및 건조에 효율적이다.4 shows a driving device for rotating the hollow shaft 20, the driving device of the present invention is a reduction gear 41 for reducing the rotation of the motor 40 and the motor 40, and a chain for transmitting rotational force ( 42) and a drive device 43 and a drive gear 43 and a conventional drive device 44. When there is only one hollow shaft 20 installed in the dryer body 10, the power transmitted through the chain is the hollow shaft. Since the driving gear 43 or the driven gear 44 is not required because it is transmitted to the 20, the driving gear 43 when two hollow shafts 20 are installed as illustrated in FIGS. 1 and 2. ) And the driven gear 44 rotate to mesh with each other so that the two hollow shafts 20 are rotated in opposite directions, which is efficient for conveying, stirring, and drying.
본 발명의 나선 축류식 열풍 건조기의 열 효율을 높이는 방안으로, 중공 샤프트(20)의 끝 부분인 열풍 배출구 쪽에 잔여 열풍 공급관(24)을 연결하여, 잔여 열풍이 열풍 분사공(13)을 통하여 건조기 몸체(10)의 내부로 다시 공급되도록 함으로써 슬러지의 건조를 촉진하는 기술이 채택될 수 있다.In order to improve the thermal efficiency of the spiral axial flow type hot air dryer of the present invention, the remaining hot air supply pipe 24 is connected to the hot air outlet side, which is an end portion of the hollow shaft 20, and the remaining hot air is blown through the hot air injection hole 13. Techniques for promoting the drying of the sludge by allowing it to be fed back into the body 10 can be adopted.
그리고 도1에서 나타난 바와 같이, 건조기 몸체(10)의 상부에는 건조기 몸체(10)의 상부를 착탈 가능하게 덮을 수 있는 덮개(50)를 설치하며, 상기 덮개(50)에는 슬러지에서 증발된 증기와 열 교환을 완료한 낮은 온도의 열풍을 배출하는 배기구(51) 또는 배기팬(52)을 형성한다.And, as shown in Figure 1, the top of the dryer body 10 is provided with a cover 50 that can be detachably covered the top of the dryer body 10, the cover 50 and the vapor evaporated from the sludge The exhaust port 51 or the exhaust fan 52 which discharges the low temperature hot air which completed heat exchange is formed.
이상 설명한 나선 축류식 열풍 건조기는 1단의 건조기이며, 슬러지의 함수율을 보다 낮출 필요가 있을 경우에는 본 발명의 나선 축류식 열풍 건조기를 수직 또는 수평방향으로 다단으로 연결하여 설치함으로써, 슬러지 배출구(12)에서 배출되는 1차 건조된 피건조물을 재차 건조시키는 다단의 건조기로 구성할 수 있다.The spiral axial flow hot air dryer described above is a one-stage dryer, and when it is necessary to lower the water content of the sludge, the sludge axial flow hot air dryer of the present invention is installed by connecting the spiral axial flow hot air dryer in multiple stages in the vertical or horizontal direction, thereby providing a sludge outlet (12). It may be composed of a multi-stage dryer for drying the first dried goods to be discharged from the) again.
본 발명에 의한 나선 축류식 열풍 건조기는, 슬러지 투입구(11)를 통하여 투입된 슬러지가, 중공 샤프트(20)와 중공 샤프트(20)의 표면에 형성되는 스크류 블레이드(21) 및 막힘 방지판(23)과 접촉하여 열을 전달받아 1차 건조되고, 중공 샤프트(20)에 형성된 통공(22)을 통하여 배출되는 열풍에 의하여 2차 건조되며, 중공 샤프트(20)의 열풍 배출구 쪽에 잔여 열풍 공급관(24)을 설치하여 잔여 열풍이 건조기 몸체(10)에 형성된 열풍 분사공(13)을 통하여 건조기 몸체(10) 내부로 공급되어 다시 건조됨으로써, 투입 열량에 대한 슬러지의 수분 제거에 사용된 열량의 비율이 75~80%를 나타낼 수 있으며, 이는 종래의 슬러지 건조장치에 비하여 열효율이 10%이상 향상된 수치이다. 따라서 본 발명에 의한 나선 축류식 열풍 건조기는 에너지 소모가 작고 설치 공간이 작으면서도 다량의 슬러지를 건조할 수 있는 작용효과를 가지게 된다.In the spiral axial flow type hot air dryer according to the present invention, the sludge introduced through the sludge inlet 11 is formed on the surface of the hollow shaft 20 and the hollow shaft 20, the screw blade 21 and the blockage preventing plate 23. It is first dried by receiving heat, and is secondly dried by hot air discharged through the through-hole 22 formed in the hollow shaft 20, and the remaining hot air supply pipe 24 is disposed on the hot air outlet side of the hollow shaft 20. The remaining hot air is supplied to the inside of the dryer body 10 through the hot air jetting hole 13 formed in the dryer body 10 and dried again, so that the ratio of the amount of heat used to remove water in the sludge to the amount of heat input is 75%. It can represent ~ 80%, which is a value of 10% or more improved thermal efficiency compared to the conventional sludge drying apparatus. Therefore, the spiral axial flow type hot air dryer according to the present invention has an effect of drying a large amount of sludge while having low energy consumption and a small installation space.
이하 본 발명이 보호받고자 하는 기술적 범위는 특허청구범위에서 특정될 것이지만, 본 발명의 상세한 설명에서 언급된 구성에서 단순히 설계를 변경한 구성은 본 발명의 기술적 범위에 속함은 물론이다.Hereinafter, the technical scope of the present invention to be protected will be specified in the claims, but the configuration simply changed in the configuration mentioned in the detailed description of the present invention belongs to the technical scope of the present invention.

Claims (4)

  1. 슬러지가 투입되는 슬러지 투입구(11)와, 건조된 슬러지가 배출되는 슬러지 배출구(12)가 형성되는 건조기 몸체(10)와,A sludge inlet 11 into which sludge is introduced, a dryer body 10 in which a sludge outlet 12 from which dried sludge is discharged is formed,
    상기 건조기 몸체(10)에 설치되며, 표면에 스크류 블레이드(21)와 막힘 방지판(23)이 형성되고, 내부와 외부를 관통하는 통공(22)이 형성되며, 양측이 베어링(45)으로 지지되는 중공 샤프트(20)와,It is installed in the dryer body 10, the screw blade 21 and the blockage preventing plate 23 is formed on the surface, the through-hole 22 penetrating the inside and the outside is formed, both sides are supported by the bearing 45 Hollow shaft 20,
    버너(30)와, 버너(30)에서 발생되는 열풍을 상기 중공 샤프트(20)로 분배하는 분배기(31)와,A burner (30), a distributor (31) for distributing hot air generated in the burner (30) to the hollow shaft (20),
    상기 건조기 몸체(10)의 상부에 설치되며, 열교환을 끝낸 열풍과 슬러지에서 증발된 증기를 외부로 배출하는 배기수단이 형성된 덮개(50)와,A cover 50 installed at an upper portion of the dryer body 10 and having exhaust means for discharging steam evaporated from the sludge and hot air after heat exchange to the outside;
    상기 중공 샤프트(20)를 회전시키는 구동장치를 포함하여서 되는 나선 축류식 열풍 건조기.Spiral axial hot air dryer comprising a drive device for rotating the hollow shaft (20).
  2. 제1항에 있어서, 건조기 몸체(10)에는 열풍 분사공(13)을 형성하고, 중공 샤프트(20)의 열풍 배출구 측에는 잔여 열풍 공급관(24)을 형성하여, 중공 샤프트(20)의 열풍 배출구에서 배출되는 잔여 열풍이 열풍 공급관(24)과 열풍 분사공(13)을 통하여 건조기 몸체(10)에 공급되도록 한 나선 축류식 열풍 건조기.The method of claim 1, wherein the dryer body 10 is formed with a hot air jet hole 13, the hot air outlet side of the hollow shaft 20 to form a residual hot air supply pipe 24, the hot air outlet of the hollow shaft 20 Spiral axial flow type hot air dryer which allows the remaining hot air discharged to be supplied to the dryer body (10) through the hot air supply pipe (24) and the hot air injection hole (13).
  3. 제1항 또는 제2항에 있어서, 건조기 몸체(10)의 내부에 설치되는 중공 샤프트(20)를 2개로 형성하고, 상기 2개의 중공 샤프트(20)의 회전 방향이 서로 반대가 되도록 한 나선 축류식 열풍 건조기.The spiral axial flow according to claim 1 or 2, wherein two hollow shafts (20) are provided in the dryer body (10), and the rotational directions of the two hollow shafts (20) are opposite to each other. Hot air dryer.
  4. 제1항 내지 제3항중 어느 한 항에 있어서, 나선 축류식 열풍 건조기를 2개 이상 연결하여서 되는 다단의 나선 축류식 열풍 건조기.The multi-stage spiral axial flow hot air dryer according to any one of claims 1 to 3, wherein two or more spiral axial flow hot air dryers are connected.
KR10-2002-0016197A 2002-03-25 2002-03-25 Spiral and axial heat flow type dryer KR100436985B1 (en)

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TW091123019A TWI254786B (en) 2002-03-25 2002-10-04 Spiral-flow type hot blast dryer
CNB021494029A CN1214228C (en) 2002-03-25 2002-11-13 Cyclone hot air drier
JP2002343898A JP3665782B2 (en) 2002-03-25 2002-11-27 Spiral axial flow hot air dryer

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