WO2003100321A1 - Dispositif d'alimentation mecanique amovible - Google Patents

Dispositif d'alimentation mecanique amovible Download PDF

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Publication number
WO2003100321A1
WO2003100321A1 PCT/JP2003/001573 JP0301573W WO03100321A1 WO 2003100321 A1 WO2003100321 A1 WO 2003100321A1 JP 0301573 W JP0301573 W JP 0301573W WO 03100321 A1 WO03100321 A1 WO 03100321A1
Authority
WO
WIPO (PCT)
Prior art keywords
movable
fixed
air passage
grid plate
plate
Prior art date
Application number
PCT/JP2003/001573
Other languages
English (en)
Japanese (ja)
Inventor
Masaru Nakamura
Kenichi Kamiya
Hiroshi Shimodaira
Asaaki Nishioka
Original Assignee
Denki Kagaku Kogyo Kabushiki Kaisha
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 Denki Kagaku Kogyo Kabushiki Kaisha filed Critical Denki Kagaku Kogyo Kabushiki Kaisha
Priority to AU2003211998A priority Critical patent/AU2003211998A1/en
Priority to KR10-2004-7004212A priority patent/KR100531994B1/ko
Publication of WO2003100321A1 publication Critical patent/WO2003100321A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H7/00—Inclined or stepped grates
    • F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
    • F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H1/00—Grates with solid bars
    • F23H1/02—Grates with solid bars having provision for air supply or air preheating, e.g. air-supply or blast fittings which form a part of the grate structure or serve as supports

Definitions

  • the present invention relates to a movable fire grate used for a clinker cooling cooler in a cement burning facility or an incinerator in a garbage incineration facility, for example.
  • a movable grate used for a clinker cooling cooler a movable grate plate and a fixed grid plate each having an air passage penetrating between upper and lower surfaces, and a fixed grid plate having a front portion adjacent to the front thereof.
  • the workpiece can be pressed forward by reciprocating the movable grid plate back and forth so that it can be pressed forward and the air supplied from below is ventilated.
  • a movable grate capable of being cooled by contacting an object to be processed through a path, wherein the ventilation path is penetrated only at the front of the lattice plate at a right angle to the upper surface of the lattice plate.
  • Japanese Patent Laid-Open Publication No. Hei 9-188582 Japanese Patent Laid-Open Publication No. Hei 9-188582.
  • each grate plate is a fixed grate with all grate plates fixed, and each grate plate is box-shaped with air supplied inside, and the top plate is inclined with respect to the top surface. It is also known that a ventilation path is formed by performing the process (Japanese Patent Publication No. 6-33551).
  • a structure in which the ventilation path is penetrated at an angle to the upper surface of the lattice plate has an advantage that the Coanda effect in which air is blown out along the upper surface of the lattice plate is easily obtained. Due to the Coanda effect, when air is blown out from the ventilation path along the upper surface of the grid plate, not only the above-mentioned blow-through does not easily occur, but also the grid plate is easily cooled, and the protection effect by cooling the grid plate is enhanced. Further, it is possible to suppress the object to be dropped from the ventilation path.
  • the ventilation path in the conventional movable grate is formed only in the front part of the grid plate, it does not come into contact with air while the object remains at the rear part of the grid plate. There is a problem of poor cooling efficiency.
  • the grid plate without an air passage there is no cooling protection effect of the grid plate due to the passage of air through the air passage, and there is a problem that the grid plate is easily overheated and easily damaged.
  • the inclined ventilation path 2 has a large opening on the upper surface, and the lump 3 of the object to be fitted is fitted therein.
  • the mass 3 of the object to be processed is sandwiched in the gap between the fixed grid plate 1 b adjacent to the rear (front), causing meshing, and the two grid plates la and 1 b are easily damaged. There is.
  • the inclined ventilation passages are formed at both the front and rear of the grid plate without worrying about the interlock, thereby preventing blow-through and improving the overall cooling protection effect.
  • the fixed grate does not have the function of transporting the processed object by moving the grid plate, there is a problem that when a large lump is supplied, it is seized and the transfer of the processed object is easily hindered.
  • a movable grate that is excellent in the function of transporting an object to be treated is often used, and there is a problem that it requires a large amount of cost to convert it into the fixed grate.
  • the present invention has been made in view of the above-described problems, and has a function of transporting an object to be processed, and furthermore, a movable grate that is widely used by a blow-through of supply air and pinching of a lump of the object to be processed.
  • a movable grate that is widely used by a blow-through of supply air and pinching of a lump of the object to be processed.
  • the movable grate of the present invention further includes a ventilation path formed through the upper and lower surfaces of the movable lattice plate and the fixed lattice plate, a rear ventilation path provided at a rear portion of the movable and fixed lattice plates,
  • the movable and fixed grids are suppressed while suppressing the supply air blow-through and the interlocking of the lump of the object to be processed between the movable grid plate and the fixed grid plate by having the above-mentioned features.
  • the contact between the workpiece and the supply air at the rear of the plate can be made possible, and the cooling protection effect of the movable and fixed grid plate rear by the supply air can be enhanced. It can be.
  • FIG. 1 is a perspective view showing a schematic configuration of a movable grate according to the present invention.
  • FIG. 2 is a partially sectional perspective view showing an example of a movable and fixed grid plate used in the movable grate of FIG.
  • FIG. 3 is an explanatory diagram of the operation of the present invention.
  • FIG. 4 is another explanatory view of the operation of the present invention.
  • FIG. 5 is a schematic diagram showing an example of a cooling power cooler provided with a movable grate according to the present invention.
  • FIG. 6 is an explanatory diagram of the problem of the present invention.
  • the movable and fixed grid plates 1a and 1b are plate-like bodies each having an air passage 2 penetrating between upper and lower surfaces, and are arranged in the front-rear direction.
  • the movable lattice plate la is attached to the movable frame 4 located below, and is reciprocally movable with the movable frame 4 in the front-rear direction.
  • the fixed grid plate lb is attached to, for example, the side wall of a clinker cooler or the side wall of an incinerator, and is fixed at a fixed position.
  • the movable lattice plate 1a and the fixed lattice plate 1b are provided alternately in the front-to-rear direction with their front portions superimposed on the rear portion of the fixed lattice plate 1b or the movable lattice plate 1a adjacent to the front.
  • the movable and fixed grid plates l a, lb are each slightly inclined backward, and are arranged such that the lines connecting the front ends of the movable and fixed grid plates l a, 1 b are substantially straight.
  • the movable frame 4 is a frame-shaped structure having wheels 6 supported on guide rails 5, and reciprocates back and forth while rolling the wheels 6 along the guide rails 5. Has become.
  • This guide The movable frame 4 has an inclination corresponding to the inclination of the movable and fixed lattice plates 1a and lb.
  • the movable lattice When the movable frame 4 reciprocates in a slightly diagonal front-back direction along the inclination of the guide rail 5, the movable lattice The plate la reciprocates in the front-back direction slightly obliquely within a range that can partially overlap the fixed grid plate 1b.
  • the reciprocating movement of the movable frame 4 can be performed by, for example, a crank mechanism or a hydraulic cylinder mechanism.
  • the movable and fixed lattice plates la and lb are for placing and sequentially transporting the objects to be processed.
  • the movable lattice plate 1a When the movable lattice plate 1a is reciprocated forward and backward as described above, the movable lattice plates During forward movement of 1a, the front end of the movable grid presses the workpiece forward, whereby the workpiece can be transported. Further, when the movable lattice plate 1a is retracted, the front end of the fixed lattice plate 1b locks the object to be processed, and it is possible to prevent the object from being retracted together with the movable lattice plate 1a.
  • the ventilation path 2 formed in the fixed lattice plate 1 b includes a rear ventilation path 2 a formed in a rear part, and a front ventilation path 2 b formed in a front part. It is composed of
  • the rear ventilation passage 2a in this example is a vertical slit penetrating at right angles to the upper surface between the upper and lower surfaces of the movable or fixed lattice plates 1a and 1b where the rear ventilation passage 2a is formed.
  • the lower end of the front ventilation path 2b in this example is formed at right angles to the upper surfaces of the movable or fixed grid plates la and 1b on which the front ventilation path 2b is formed.
  • the upper end side is a rectangular slit (bent slit) which is formed to be inclined forward with respect to the upper surface of the movable or fixed grid plate 1a, 1b in which the front ventilation path 2b is formed.
  • the rear air passage 2a and the front air passage 2b in the present invention are It can be a hole instead of a hole.However, it is easy for air to uniformly contact the workpiece on the movable grid plate la and the fixed grid plate 1b in the width direction.
  • the slit is a horizontally long slit formed in a direction perpendicular to the plane.
  • the rear ventilation path 2a in the present invention may be bent or inclined at the lower end side as long as at least the upper end side is formed at a right angle to the upper surface, but since it is easy to form and the air resistance is reduced, It is preferable that the whole is formed at right angles to the upper surface.
  • the front vent 2b can be formed diagonally as a whole, but as the inclination increases, the number of front vents 2b that can be formed decreases, so in order to reduce this, Preferably, only the upper end is inclined, and the lower end is formed at right angles to the upper surface.
  • the rear ventilation path 2a and the front ventilation path 2b can have the same slit width or hole diameter over the entire length, but the upper end slit is designed to make it easier to drop and discharge when the workpiece enters. It is preferable that the slit width or the hole diameter on the lower end side be larger than the width or the hole diameter.
  • the rear ventilation channel 2a and the front ventilation channel 2b are as described above, as shown in Fig. 3, the rear ventilation channel 2a and the front ventilation channel have a slit width or hole diameter that facilitates obtaining the required airflow.
  • road 2 when expressed by a and b, respectively, can be smaller fence from the upper surface opening width W 2 of the upper opening width of the rear vent passage 2 a front air passage 2 b. Therefore, for example, even if the lump 3 of the object to be processed is put on the upper opening of the rear ventilation passage 2a of the movable lattice la (fixed lattice portion 1b), it fits in the small opening of the rear ventilation passage 2a.
  • a rear ventilation passage 2a is formed at the rear of the movable lattice portion 1a and the fixed lattice portion 1b, and the air blown out from the rear ventilation passage 2a can be brought into contact with the workpiece. Processing efficiency is improved.
  • the rear can be cooled by the air passing through the rear vent passage 2 a, the way c can prevent the back of overheating, the rear vent passage 2 a is at a right angle at least upper side with respect to the upper surface formed
  • the air passing there rises directly and is easily blown.
  • the rear part of the movable lattice plate 1a and the fixed lattice plate 1b is covered with the front part of the fixed lattice plate 1b or the movable lattice plate 1a adjacent to the rear as the movable lattice plate 1a reciprocates.
  • blow-through is substantially unlikely to occur, and even if a blow-through occurs, its influence can be minimized.
  • the rear ventilation path 2a is movable with the reciprocating movement of the movable grid plate 1a even at the rear of the movable and fixed grid plates 1a and lb. It is preferable to provide it only in the region where the grid plate 1a and the fixed grid plate 1b overlap.
  • At least the upper end side of the front ventilation path 2b is inclined forward with respect to the upper surface, so that air can be blown out along the upper surface by the Coanda effect, and the air is efficiently treated while suppressing blow-through. Air can be brought into contact with the physical material, and the front part can be cooled to prevent overheating.
  • the front ventilation passage 2b is designed to easily obtain the Coanda effect without being greatly restricted by the number of formed passages.
  • At least the inclination angle S (see FIG. 3) with respect to the upper surface on the upper end side should be 15 to 60 degrees. Preferably, it is 20 to 30 degrees.
  • at least the upper end side of the front ventilation path 2b is inclined forward with respect to the upper surface, and the air blows forward, so that the workpiece can be transported by the flow of the air.
  • the rear air passage 2a in the present invention is, for example, as shown in FIG.
  • the rear part of the movable lattice plate 1a (fixed lattice plate 1b) overlaps most of the front part of the fixed lattice plate lb (movable lattice plate la) and is fixed. It also serves to supply air to the front ventilation passage 2b formed in front of the grid lb (movable grid 1a).
  • the edges 7 are respectively projected downward at least at the front ends of the lower surfaces of the movable lattice plate 1a and the fixed lattice plate 1b, and the lower surface of the fixed lattice plate lb (movable lattice plate la) and the movable lattice plate It is preferable to ensure a gap between the upper surface of la (fixed grid plate lb) and the space that facilitates the flow of air.
  • the edge 7 may be provided on the lower surface periphery of the movable grid plate 1a and the fixed grid plate 1b.
  • the thickness of the movable grid plate 1a and the fixed grid plate 1b is not particularly limited as long as the required strength can be obtained even if the rear ventilation path 2 and the front ventilation path 2a are formed.
  • the thickness is generally preferably 10 mm or more, particularly preferably about 15 to 70 mm.
  • reference numeral A denotes a movable grate according to the present invention. On this movable grate A, a high-temperature burner 9 fired from a kiln 8 is discharged.
  • the lower part of the movable grate A is partitioned into a plurality of air chambers 10 arranged in series along the conveying direction of the cleaning force 9, and each air chamber 10 has an air supply port 1 opened to the side.
  • the air is sent from the fan 11 via the pump 2.
  • the movable grate of the present invention includes a rear ventilation path having at least an upper end formed in a direction perpendicular to the upper surface at a rear portion of the movable and fixed lattice plates, and the rear ventilation path has at least an upper end. Since the width of the upper surface opening can be made smaller than that of the front air passage formed so that the side is inclined forward with respect to the upper surface, a large lump of the workpiece does not fit into the upper surface opening. Therefore, a large lump of the workpiece is fitted into the opening on the upper surface, and when the movable grid plate is retracted (forward), the workpiece is inserted into a gap between the movable grid plate and the fixed grid plate adjacent to the rear (front). It is possible to prevent the two grid plates from being damaged due to the interlocking of the lumps, which results in less trouble.
  • the movable grate of the present invention has not only the front ventilation path but also the rear ventilation path, the air flowing through the rear ventilation path can protect the rear part from cooling.
  • the rear portions of the movable grid plate and the fixed grid plate are covered with the front portion of the fixed grid plate or the movable grid plate adjacent to the rear with the reciprocating movement of the movable grid plate, and are covered on the movable grid plate. Since the movement of the processed material is surely performed, blow-through is substantially unlikely to occur, and even if a blow-by occurs, its influence can be minimized. Therefore, it is possible to effectively prevent a decrease in the temperature of the recycle air when used in, for example, a clean cooling cooler, thereby achieving high cooling efficiency and maintaining a high temperature of the recycle air.
  • the movable grate of the present invention has a front portion having at least an upper end side inclined forward with respect to the upper surface at a front portion of a movable and fixed grid plate on which an object to be processed is always placed. Because it has a ventilation path, Coanda It is possible to prevent blow-through due to the effect and to achieve good cooling protection of the front part.
  • the movable grate according to the present invention is not only unlike a normal movable grate, but is not only unlikely to have large lumps like a fixed grate, but also has a basic structure similar to that of a commonly used movable grate. Therefore, the existing movable grate can be easily and inexpensively converted into the movable grate of the present invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)

Abstract

L'invention concerne un passage de ventilation conçu pour pénétrer entre les surfaces supérieure et inférieure d'un grillage mobile et d'un grillage fixe. Le passage de ventilation est constitué d'un passage de ventilation arrière disposé à l'arrière des grillages mobile et fixe et d'un passage de ventilation avant disposé à l'avant des grillages mobile et fixe. Au moins la partie latérale de bout supérieure du passage de ventilation arrière est formée dans le sens perpendiculaire à la surface supérieure, et au moins la partie latérale de bout inférieure du passage de ventilation avant est formée de façon à s'incliner vers l'avant par rapport à la surface supérieure. De l'air frais peut ainsi aller au contact d'une matière en traitement située à l'arrière des grillages mobile et fixe sans s'écouler en travers, ce qui empêche la matière en traitement d'être prise par les grillages mobile et fixe et améliore l'effet de refroidissement et de protection de l'air frais à l'arrière des grillages mobile et fixe.
PCT/JP2003/001573 2002-05-27 2003-02-14 Dispositif d'alimentation mecanique amovible WO2003100321A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003211998A AU2003211998A1 (en) 2002-05-27 2003-02-14 Movable stoker
KR10-2004-7004212A KR100531994B1 (ko) 2002-05-27 2003-02-14 가동 화격자

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002151950A JP3404490B1 (ja) 2002-05-27 2002-05-27 可動火格子
JP2002-151950 2002-05-27

Publications (1)

Publication Number Publication Date
WO2003100321A1 true WO2003100321A1 (fr) 2003-12-04

Family

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PCT/JP2003/001573 WO2003100321A1 (fr) 2002-05-27 2003-02-14 Dispositif d'alimentation mecanique amovible

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Country Link
JP (1) JP3404490B1 (fr)
KR (1) KR100531994B1 (fr)
AU (1) AU2003211998A1 (fr)
WO (1) WO2003100321A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100926224B1 (ko) * 2008-11-17 2009-11-09 코오롱환경서비스주식회사 폐기물을 사행전단시키는 이형단면 구조의 화격자
JP7015205B2 (ja) * 2018-04-25 2022-02-02 日立造船株式会社 火格子構造体およびストーカ式焼却炉

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600380A (en) * 1983-09-08 1986-07-15 Wedel Karl Von Grate plates retaining solids and improving gas distribution to be used in grates for the heat treatment of solid material
US4870913A (en) * 1987-10-08 1989-10-03 Klockner-Humboldt Deutz Aktiengesellschaft Grate cooler for cooling hot bulk material
JPH0222155A (ja) * 1988-07-07 1990-01-25 Kurimoto Ltd グレートプレート
JPH09188552A (ja) * 1996-01-12 1997-07-22 Babcock Hitachi Kk クリンカクーラの格子板
US5766001A (en) * 1995-01-20 1998-06-16 Bentsen; Bo Grate element for a grate surface, e.g. in a clinker cooler
US6266883B1 (en) * 1996-06-05 2001-07-31 Krupp Polysius Ag Method of making a grate plate
US6290493B1 (en) * 1998-02-24 2001-09-18 Magotteaux International Grate plate for cooler

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600380A (en) * 1983-09-08 1986-07-15 Wedel Karl Von Grate plates retaining solids and improving gas distribution to be used in grates for the heat treatment of solid material
US4870913A (en) * 1987-10-08 1989-10-03 Klockner-Humboldt Deutz Aktiengesellschaft Grate cooler for cooling hot bulk material
JPH0222155A (ja) * 1988-07-07 1990-01-25 Kurimoto Ltd グレートプレート
US5766001A (en) * 1995-01-20 1998-06-16 Bentsen; Bo Grate element for a grate surface, e.g. in a clinker cooler
JPH09188552A (ja) * 1996-01-12 1997-07-22 Babcock Hitachi Kk クリンカクーラの格子板
US6266883B1 (en) * 1996-06-05 2001-07-31 Krupp Polysius Ag Method of making a grate plate
US6290493B1 (en) * 1998-02-24 2001-09-18 Magotteaux International Grate plate for cooler

Also Published As

Publication number Publication date
JP3404490B1 (ja) 2003-05-06
JP2005180710A (ja) 2005-07-07
KR20040053135A (ko) 2004-06-23
KR100531994B1 (ko) 2005-12-01
AU2003211998A1 (en) 2003-12-12

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