Large coating lump removing device

What claimed is:




1. An apparatus for removing least one large lump coating, which was discharged rotary kiln for burning cement clinker, dropped onto retained static grate cooler, static grate mobile grate, static grate mobile grate enclosed clinker cooler characterized by having plurality spaced pushing rods for pushing large lumps coating retained static grate, cooling means for cooling pushing rods, drive means for making pushing pulling operation plurality pushing rods into out clinker cooler.


2. The apparatus for removing least one large lump coating according claim 1, wherein drive means provided with guide means for guiding pushing pulling operation pushing rods.


3. The apparatus for removing large lumps coating according claim 1 or 2, further comprising monitoring means for monitoring what static grate protection shutter for covering lens section monitoring means predetermined time intervals.


4. An apparatus for removing least one large lump coating which was discharged rotary kiln for burning cement clinker, dropped onto retained static grate cooler, static grate mobile grate, characterized by having pushing rods for pushing least one large lump coating retained static grate drive means for making pushing pulling operation pushing rods; cooling means for cooling pushing rods; detecting means for detecting flow rate cooling means, control means which does not start pushing pulling operation pushing rods or suspends pushing pulling operation set back pushing rods according detected result by detecting means.


5. The apparatus for removing least one large lump coating according claim 4, wherein drive means provided with guide means for guiding pushing pulling operation pushing rods.


6. An apparatus for removing least one large lump coating which was discharged rotary kiln for burning cement clinker, dropped onto retained static grate cooler, static grate mobile grate, characterized by having pushing rods for pushing least one large lump coating retained static grate; drive means for making pushing pulling operation pushing rods; monitoring means for monitoring what static grate; protection shutter for covering lens section monitoring means predetermined time intervals.


7. The apparatus for removing least one large lump coating according claim 6, wherein drive means provided with guide means for guiding pushing pulling operation pushing rods static grate side mobile grate side.

TECHNICAL FIELD

The present invention relates apparatus for removing large lumps coating, which mounted static grate section cooling section (clinker cooler) cement clinker burning, more particularly apparatus for removing large lumps coating, which prevents large lump coating, which adhered inner wall rotary kiln (kiln) separated drop there, being retained static grate section.

BACKGROUND ART

It known well that cement includes limestone clay main materials it produced by grinding raw materials such limestone, clay iron oxide mill, mixing them appropriately, burning mixed materials kiln, quickly cooling by air within clinker cooler produce sintered particles called clinker, adding gypsum like clinker, pulverizing finish mill, removing powder having predetermined grain size by air separator.

FIG. 7 structure diagram showing one example conventional cement clinker burning system.

In cement clinker burning, raw material C 0 charged into preheated suspension preheater 10 having several heat exchangers 11 connected then taken into kiln 20 . For example, kiln 20 cylindrical furnace with overall length about 100 m disposed inclined position about 4% its interior heated about 1450° C. rotated.

Clinker C 1 discharged kiln 20 rotated drops onto grate plates static grate 31 clinker cooler 30 . The static grate 31 clinker cooler 30 inclined surface, clinker C 1 dropped it slides down along layer clinker static grate 31 carried downward along grate plates mobile grate 32 which reciprocates. The clinker C 1 quickly cooled by cooling air injected through holes or slits formed grate plates.

It not shown drawing but plurality high-pressure air injectors, which comprise air tank outside wall side nozzles connected air tank pierced through side wall clinker cooler 30 , are disposed side wall side static grate 31 clinker cooler 30 determined sequence periodically inject high-pressure air nozzles into clinker cooler 30 prevent clinker, coating like accumulating abnormally static grate 31 .

In aforesaid conventional cement clinker burning system, however, when coating adheres inside wall kiln 20 its adhesion grows, large lump coating separates sometimes drop into clinker cooler 30 . A position where large lump coating C 2 drops often far inside wall clinker cooler 30 , namely far nozzles high-pressure air injector. Therefore, there problem that large lump coating C 2 stays where it was dropped without sliding down mobile grate 32 even if high-pressure air injected. The same remedy also required because clinker accumulates become so large form large lump. Besides, large lump coating C 2 sometimes weight several tons, when it drops vicinity nozzles high-pressure air injector, its removal by high-pressure air difficult.

Therefore, high-pressure water conventionally injected into clinker cooler 30 by worker required break large lumps coating C 2 static grate 31 so remove them mobile grate 32 . For removal work by high-pressure water, worker opens manhole clinker cooler 30 holds nozzle high-pressure water hose eject high-pressure water large lumps coating C 2 retained static grate. Therefore, similar removal work large lumps coating C 2 by high-pressure air, there problem that removing efficiency considerably low when large lumps coating C 2 are far way nozzle.

In addition, it difficult automate work because large lumps coating C 2 are not uniform size shape. The removal work by high-pressure water manually performed, because radiant heat not normal but very severe cooler having high temperature 1000° C. or more, work environment extremely bad. Besides, fragments high temperature are scattered large lumps coating C 2 broken by high-pressure water, steam produced explosively because water injected high-temperature large lumps coating C 2 . Thus, danger suffering contusion burn high for worker. Besides, danger rupture pipe due damage or like high because high-pressure water pressure about several tens MPa. Thus, there are disadvantages that it necessary perform maintenance respective components such pipes regularly short cycle, maintenance management are costly.

Accordingly, present invention was achieved view aforesaid existing problems. And it object invention provide apparatus for removing large lumps coating, which remove large lumps coating retained static grate with reliability without manually working, automate removing work excels maintenance management.

DISCLOSURE OF THE INVENTION

In order achieve aforesaid object, apparatus for removing large lumps coating present invention apparatus for removing least one large lump coating, which moves large lump coating discharged kiln for burning cement clinker, dropped onto retained static grate cooler, static grate mobile grate removes static grate, characterized by having pushing rods for pushing large lumps coating retained static grate drive means for making pushing pulling operation pushing rods.

The apparatus for removing large lumps coating present invention drive means which provided with guide means for guiding pushing pulling operation pushing rods static grate side mobile grate side.

The apparatus for removing large lumps coating present invention provided with cooling means for cooling pushing rods.

The apparatus for removing large lumps coating present invention provided with detecting means for detecting flow rate cooling means, control means which does not start pushing pulling operation pushing rods or suspends pushing pulling operation set back pushing rods according detected result by detecting means.

The apparatus for removing large lumps coating present invention provided with monitoring means for monitoring what static grate protection shutter for protecting lens section monitoring means by operating predetermined time intervals.

By configuring described above, apparatus for removing large lumps coating makes drive means perform pushing pulling operation pushing rods, so that large lumps coating retained static grate are pushed by pushing rods when drive means activated. In other words, large lumps coating dropped kiln retained static grate pushed by leading ends pushing rods removed onto mobile grate.

The apparatus for removing large lumps coating pushing pulling operation pushing rods guided static grate side mobile grate side by guide means. Therefore, reliability pushing large lumps coating staying static grate by leading ends pushing rods high.

The apparatus for removing large lumps coating pushing rods cooled by cooling means, so that pushing rods, which protrude into clinker cooler exposed high-temperature atmosphere, delayed being degraded also maintain sufficient strength high-temperature atmosphere.

Besides, apparatus for removing large lumps coating controlled so that pushing pulling operation pushing rods not started or pushing pulling operation suspended set back pushing rods when cooling water flow rate lower than predetermined value. Therefore, pushing rods effectively prevented being deformed or degraded due boiling cooling water within pushing rods.

And, apparatus for removing large lumps coating monitors what static grate by monitoring means, so that what static grate always monitored, large lumps coating found early without fail. The lens monitoring means protected flying substances such clinker, coating like by protection shutter for covering lens predetermined time intervals. Thus, lens prevented being broken or contaminated, frequency maintenance for replacement, cleaning like lens decreased.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 structure diagram cement clinker burning equipment provided with apparatus for removing large lumps coating showing first embodiment present invention;

FIG. 2 plan view apparatus for removing large lumps coating FIG. 1;

FIG. 3 sectional view pushing rods shown FIG. 1 FIG. 2;

FIG. 4 graph showing relation between cooling water flow rates cooling water outlet temperatures;

FIG. 5 graph showing relation between pushing rod insertion duration cooling water outlet temperatures;

FIG. 6 structure diagram apparatus for removing large lumps coating showing second embodiment present invention;

FIG. 7 structure diagram showing example conventional cement clinker burning equipment.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments apparatus for removing large lumps coating present invention described with reference accompanying drawings.

FIGS. 1 3 show first embodiment present invention. FIG. 1 structure diagram cement clinker burning equipment using apparatus for removing large lumps coating present invention, FIG. 2 plan view apparatus for removing large lumps coating shown FIG. 1, FIG. 3 sectional view pushing rods shown FIG. 1 FIG. 2 .

This cement clinker burning system comprises suspension preheater 10 for heating raw materials, kiln 20 for burning clinker cooler 30 for cooling clinker C 1 , which are sequentially arranged same manner conventional one shown FIG. 7 .

Specifically, raw material C 0 fed into suspension preheater 10 , preheated predetermined temperature taken into kiln 20 . Then, clinker C 1 discharged kiln 20 rotates so drop onto static grate 31 clinker cooler 30 . The dropped clinker C 1 slides down toward mobile grate 32 downstream static grate 31 conveyed along grate plates during which clinker C 1 cooled quickly by air flow. For grate plates static grate 31 , for example, KIDS made by IKN, Mulden plates made by BMH or like may used. High-pressure air periodically injected into clinker cooler 30 by plurality high-pressure air injection devices (not shown).

The apparatus for removing large lumps coating present invention attached clinker cooler 30 comprises pushing rods 40 , support base 50 , guide rails 60 drive unit 70 . The clinker cooler 30 provided with door 33 wall upper part slope static grate 31 , seal material 34 disposed opening seen when door 33 opened, pushing rods 40 are pierced through seal material 34 so push large lumps coating C 2 retained static grate 31 . The door 33 opened closed by drive mechanism (not shown). A sequence determined so that door 33 which generally closed opened by operating switch for activating drive unit 70 .

The position where door 33 installed not particularly limited, but it preferable door 33 level so that pushing rods 40 are supported by layer clinker 1 C static grate 31 excessive force not applied pushing rods 40 .

A hopper may disposed below door 33 recover portions clinker C 1 leaked clinker cooler 30 when pushing rods 40 are started operate or seal material 34 deteriorated, damaged or like. The recovered clinker C 1 supplied conveyor which generally disposed below clinker cooler 30 , so that it recovered without additional establishment large scale equipment.

When clinker cooler 30 large width, apparatus for removing large lumps coating present invention may added plurality units clinker cooler 30 . For example, two apparatuses for removing large lumps coating may added width direction clinker cooler 30 pushing rods each apparatus operated independently, so that undesired insertion pushing rods 40 prevented their degradation damage delayed.

The pushing rods 40 are generally long rods having circular cross section their rear ends pivotably connected support base 50 . And, support base 50 movably engaged with guide rails 60 so that it moved by drive unit 70 . The pushing rods 40 may square, rhombus, oval or like cross section required. The circular cross section according embodiment provides minimum surface area, contribute decrease heat conducted pushing rods 40 even little amount, it easy produce.

The pushing rods 40 may disposed by only one but preferably arranged multiple numbers so that large lumps coating C 2 pushed regardless where they drop large lumps coating C 2 pushed without fail. In this embodiment, three pushing rods 40 are laterally arranged predetermined spacing shown FIG. 2 . This spacing arrangement preferably determined smaller than minimum size large lumps coating C 2 which might stay, namely spacing about 1 m or smaller view general size large lumps coating C 2 .

The pushing rods 40 may arranged required arranged same line. In addition, they may arranged up down double, vertexes equilateral triangle or like viewed front pushing rods 40 , so that area pushed increased lengthwise stably push out large lumps coating C 2 .

The guide rails 60 are disposed parallel with inclination static grate 31 . By disposing this way, pushing rods 40 reciprocally moved static grate 31 side with respect mobile grate 32 side so remove large lumps coating C 2 without fail. When there sufficient installation space, guide rails 60 may extended linearly, but it sometimes difficult sufficient space because there are kiln 20 its support above installation space. Therefore, guide rails this embodiment are extended rise then curved downward rear portions rails. Thus, small installation space below kiln 20 used effectively, pushing rods 40 longer than when guide rails 60 are linearly arranged disposed.

The installation place guide rails 60 not particularly limited but they may installed slantingly with respect extension line inclination static grate 31 . The large lump coating C 2 tends become large vertical direction with respect horizontal surface. Therefore, present apparatus disposed side static grate 31 push large lumps coating C 2 sideways so push them layer clinker C 1 static grate 31 , then large lumps fallen coating C 2 removed toward mobile grate 32 along flow clinker C 1 .

And, guide rails 60 are laterally arranged two predetermined spacing between them shown FIG. 2, support base 50 movably engaged with two rails. Rolling means such bearings tires are mounted between them reduce friction when moving.

The drive unit 70 comprises power section which accommodates drive wheel 71 drive motor 72 , interconnected wheel 73 , loop wire belts 74 . Specifically, interconnected wheel 73 main body are respectively disposed front rear ends guide rails 60 , wire belts 74 are put around interconnected wheel 73 drive wheel 71 . The drive wheel 71 rotated by drive motor 72 rotate wire belts 74 accordingly. The two wire belts 74 are put around side by side, drive wheel 71 interconnected wheel 73 are designed two parallel loop grooves. By disposing two wire belts 74 , even if one them broken when pushing rods 40 protrude into clinker cooler 30 , pushing rods 40 removed clinker cooler 30 . And, these wire belts 74 are connected support base 50 their way loop. Therefore, support base 50 moved wire belts 74 are rotated, pushing rods 40 are guided by guide rails 60 so make pushing operation.

The drive unit 70 not limited aforesaid wire belt mechanism may changed required gear mechanism, hydraulic mechanism, pneumatic mechanism or like.

The pushing rods 40 come into contact with large lumps coating C 2 , their pushing force depends drive force exerted by drive unit 70 . In order remove large lumps coating C 2 efficiently without fail, it preferable determine each component drive system so that pushing rods 40 pushing force 200N 100,000N. When pushing force less than 200N, even if large lumps coating C 2 are found before they become very large, large lumps coating C 2 may not pushed because drive force too small push them. When pushing force exceeds 100,000N, possibility causing problem becoming large apparatus, breaking respective components by abnormal situation, for example pushing rods 40 are stuck, becomes higher than possibility improvement removal large lumps coating C 2 . The atmosphere clinker cooler 30 high temperature 1000° C. or higher, so that when solid rod (e.g., SUS having diameter 90 mm) used for pushing rods 40 , they are heated red hot soft, possibly resulting being deformed so not perform pushing operation. As shown FIG. 3, pushing rod 40 double tubular structure which inner tube 42 concentrically disposed hollow outer tube 41 with its front rear ends closed protruded rear end form supply port 43 for cooling water. A discharge port 44 for cooling water formed outer tube 41 vicinity supply port 43 . The cooling water fed through supply pipe 45 connected supply port 43 discharged through discharge pipe 46 connected discharge port 44 . Namely, cooling water flows through inner tube 42 double tube, reaches leading end returns between outer tube 41 inner tube 42 discharged discharge port 44 . By configuring described above, cooling water having lower temperature supplied leading end which pushes large lumps coating.

The supply pipe 45 for cooling water connected each pushing rod 40 provided with flow rate adjuster 47 , which adjusts required correct unbalanced supply amount cooling water so make flow rate uniform. And, respective flow rate adjusters 47 their upstream sections collectively connected main water pipe 48 shown FIG. 3 . The main water pipe 48 main valve 49 which opened closed start stop water supply collectively. The respective supply pipes 45 respective discharge pipes 46 are made flexible pipe so follow reciprocating operation pushing rods 40 . Each pipe for water supply discharge systems made member having high pressure resistance heat resistance so durable against increases pressure temperature due probable boiling cooling water. In case use cold district, it preferable that respective pipes are made member which not deteriorated by low temperature. And it desired enable complete drain water supply discharge systems so prevent pipes being broken due freezing.

The cooling water determined appropriate flow rate so that pushing rods 40 cooled sufficiently without causing boiling pushing rods 40 . If cooling water boils, cooling efficiency considerably lowered, pushing rods 40 may softened, deformed degraded, inside pressure might abnormally increase break respective components. Therefore, it desired secure satisfactory flow rate, but flowing cooling water flow rate more than required does not provide cooling effect expected spite flow rate. Thus, there are lots waste it uneconomical. Therefore, it necessary determine cooling water appropriate flow rate.

Besides, consideration safety, flow rate cooling water preferably determined so that pushing rods 40 cooled sufficiently without causing boiling within them even if they are caught clinker cooler 30 . For example, FIG. 4 graph showing results obtained by measuring changes temperature water discharged pushing rods 40 with inlet temperature cooling water determined predetermined value. The pushing rods 40 used had outer diameter 90 mm, inside tube diameter 34 mm length 5 m, considering that inlet temperature cooling water was variable depending seasons, inlet temperature cooling water was determined 9° C., 20° C. 30° C. And, changes outlet temperature cooling water with respect flow rate cooling water were measured. Necessary minimum amounts water for keeping outlet temperature 75° C. or below view safety were determined FIG. 4 shown Table 1.

TABLE 1
Weather	Winter	Spring & Autumn	Summer
Cooling water inlet temp.	9	20	30
(° C.)
Minimum cooling water flow	0.8	1.1	1.5
rate × 10 −3 (m 3 /s)

In this embodiment, it sequentially determined that cooling water specified keep flow rate above values or higher, reciprocating operation not started if shortage flow rate detected by flow rate sensor (not shown) before starting reciprocating operation, if shortage flow rate detected after reciprocating operation started, reciprocating operation suspended, pushing rods 40 are retracted. When reciprocating operation suspended, reciprocating operation may restarted after pushing rods 40 are retracted even little, cooling water predetermined flow rate or its temperature lowers. To avoid collision with large lumps clinker C 2 , it desirable retract pushing rods 40 so leading ends pushing rods 40 removed clinker cooler 30 , it more desirable retract them initial position.

And, it may designed attach temperature sensor discharge port 44 for cooling water, if abnormal increase outlet temperature cooling water detected, flow rate increased, but if temperature cannot controlled, aforesaid sequence by flow rate sensor may started. Besides, it may determined decrease flow rate if cooling water being supplied excessively.

For reciprocating operation pushing rods 40 , it desirable operate them quickly by drive unit 70 prevent pushing rods 40 being deformed or broken by being hit by large lumps coating C 2 falling down kiln 20 , reciprocating operation pushing rods 40 generally determined complete about one minute or less.

Besides, operation pushing rods 40 high speed allows decrease duration when pushing rods 40 remain clinker cooler 30 high temperature avoid increase temperature cooling water. In this embodiment, flow rate cooling water determined so that it does not boil pushing rods 40 even if pushing rods 40 stay clinker cooler 30 , while safety improved additionally by decreasing insertion time pushing rods 40 clinker cooler 30 .

For example, FIG. 5 graph showing results obtained by measuring changes temperature water discharged pushing rods 40 with flow rate cooling water determined predetermined value. For measurement, pushing rods 40 used had outer diameter 80 mm, inner tube diameter 27 mm length 5 m outer diameter 50 mm, inner tube diameter 27 mm length 5 m. Changes temperature discharged water with respect duration when respective pushing rods 40 were inserted into clinker cooler 30 were measured. It apparent FIG. 5 that outlet water temperature becomes steady state about one minute when pushing rod having outer diameter 50 mm used about two minutes when pushing rod having outer diameter 80 mm used. It desirable complete reciprocating operation pushing rods 40 before outlet water temperature becomes steady state, it desirable complete reciprocating operation pushing rods 40 about one minute or less avoid cooling water increasing temperature.

A material for pushing rods 40 desired high heat resistance, more desirably SUS for example. Furthermore, surface pushing rod 40 made SUS or like may treated by metallizing highly heat-resistant material such zirconia. Metallizing preferably performed thickness about 1 mm or below. If metallized thickness greater than about 1 mm, formed film easily peeled when pushing rods are used under condition that heat load repeatedly applied. The improvement heat resistance by metallizing surface treatment was determined by measuring temperatures related flow rate cooling water by using sample. Specifically, sample was prepared by metallizing zirconia thickness 0.6 mm surface pushing rod 40 having outer diameter 50 mm, inside tube diameter 27 mm length 5 m. Changes temperature discharged water were measured. As shown FIG. 5, temperature drop apparent compared with non-metallized sample, effective heat-insulating effect obtained.

The pushing rods 40 may determined appropriate size considering size large lump coating C 2 removed easy handling apparatus, it desirable outer diameter about 50 300 mm length about 2 10 m.

The outside tube 41 pushing rods 40 are also desirable large thickness keep sufficient mechanical strength under high temperature suppress cooling water boiling. But, when they are thick more than necessary, cooling by cooling water does not reach surface pushing rods 40 , there possibility that surface pushing rods 40 deteriorated by heat clinker C 1 . From aforesaid viewpoint, outside tube 41 pushing rod 40 should thickness about 2 30 mm.

By configuring described above, apparatus for removing large lumps coating this embodiment pushes large lumps coating C 2 staying static grate 31 through opening with door 33 opened by activating drive unit 70 move support base 50 wire belts 74 rotate, performing pushing pulling operations support base 50 , namely pushing rods 40 , which are guided by guide rails 60 . In other words, large lumps coating C 2 having fallen kiln 20 retained static grate 31 pushed by leading ends pushing rods 40 so removed onto mobile grate 32 . A worker merely operates switch for activating drive unit 70 . Thus, it easy free danger involved removal according conventional manual work.

The pushing operation pushing rods 40 based structure that support base 50 guided by guide rails 60 restricted move static grate 31 side mobile grate 32 side by aforesaid guide. Therefore, reliability pushing large lumps coating C 2 retained static grate 31 by leading ends pushing rods 40 high.

As result, large lumps coating C 2 removed easily with reliability, cement produced with stability. Thus, its productivity improved.

Besides, cooling water flows predetermined flow rate supply pipes 45 into pushing rods 40 cool them, boiling cooling water pushing rods 40 due its shortage amount predicted by flow rate sensor. If necessary, outlet temperature cooling water measured by temperature sensor, pushing operation suspended, so that pushing rods 40 , which protrude into clinker cooler 30 exposed high-temperature atmosphere, maintained sufficient strength durability while its deterioration delayed. The pushing rods 40 are not always protruded into clinker cooler 30 . When switch for activating drive unit 7 operated, pushing rods 40 are fitted seal material 34 protrude after door 33 opened according sequence setting. Thus, it desirable prevent degradation breakage. Because pushing rods 40 are fitted seal material 34 protrude into clinker cooler 30 , no gap formed, high-temperature gas clinker C 1 prevented leaking.

FIG. 6 shows second embodiment present invention. It structure diagram cement clinker burning system using apparatus for removing large lumps coating present invention. Like reference numerals are used designate like or corresponding parts first embodiment, overlapping description omitted.

A CCD camera 80 , which structure usable high-temperature atmosphere, disposed position where static grate 3 clinker cooler 3 monitored. The CCD camera 80 protection shutter 81 for protecting its lens.

The protection shutter 81 does not normally cover lens so that image static grate 31 clinker cooler 30 taken by CCD camera 80 monitored through display monitor. But, clinker rises up within clinker cooler 30 because high-pressure air blast by high-pressure air injector (not shown) falling large lumps coating C 2 onto static grate 31 or like, flying substances might contaminate or break lens CCD camera 80 . Therefore, it designed this embodiment cover lens CCD camera 80 by protection shutter 81 when flying substances are produced so protect lens flying substances. Specifically, protection shutter 81 operated according sequence that it closed cover lens CCD camera 80 before high-pressure air injector operated opened reveal lens CCD camera 80 after lapse predetermined duration after high-pressure air injector operated. Thus, lens CCD camera 80 protected flying substances.

The protection shutter 81 may any shape far it fully cover lens CCD camera 80 flat plate circular, square or like. A material for protection shutter 81 desired highly heat resistant, for example, heat-resistant alloy, Incoloy 800H (Mitsubishi Materials Corporation), used. A drive mechanism for protection shutter 81 not limited particularly. For example, support shaft connected drive motor connected center edge protection shutter square flat plate, protection shutter opened closed by turning it by 90 degrees.

By configuring described above, CCD camera 80 monitors what static grate 31 , so that monitoring static grate 31 made with higher reliability than made by visual inspection. Besides, large lumps coating C 2 found without fail early. The protection shutter 81 which operates predetermined time intervals protect lens CCD camera 80 flying substances clinker, coating like. Thus, lens prevented being broken or contaminated, maintenance frequency for replacement, cleaning like lens decreased. Therefore, monitoring by worker facilitated, high-temperature dangerous work decreased. Thus, it advantageous excellent view maintenance management. As result, cement produced stably, its productivity improved further more.

A camera capable making heat image analysis may installed instead CCD camera 80 . The surface temperature large lumps coating lower than that layer clinker cooler, camera capable making heat image analysis catch low-temperature portions image. Therefore, sequence determined so that when there caused area having temperature lower than predetermined value, it recognized large lump coating pushing rods are automatically operated. Thus, pushing rods operated without depending monitoring by worker. In such case, temperature which pushing roads are operated may determined required depending where camera installed. In order prevent false recognition low-temperature portion caused by accident within cooler, it preferable set sequence that if low-temperature portion present for predetermined duration, e.g., five minutes or more, it recognized large lump coating.

INDUSTRIAL APPLICABILITY

As described above, apparatus for removing large lumps coating present invention provides following excellent effects.

(1) The apparatus for removing large lumps coating makes drive means perform pushing pulling operation pushing rods, so that large lumps coating retained static grate are pushed by pushing rods when drive means activated. In other words, large lumps coating dropped kiln retained static grate pushed by leading ends pushing rods removed onto mobile grate. To do so, worker merely required operate switch for activating drive means. It easy free danger that might caused by conventional work manually removing them.

(2) The apparatus for removing large lumps coating pushing pulling operation pushing rods guided restricted static grate side mobile grate side by guide means. Therefore, reliability pushing large lumps coating retained static grate by leading ends pushing rods high.

As result, large lumps coating removed easily with reliability, so that cement produced stably its productivity improved.

(3) The apparatus for removing large lumps coating pushing rods cooled by cooling means, so that pushing rods, which protrude into clinker cooler exposed high-temperature atmosphere, delayed being degraded maintain its durability. And, pushing rods also maintain sufficient strength high-temperature atmosphere.

(4) The apparatus for removing large lumps coating controlled so that pushing pulling operation pushing rods not started or pushing pulling operation suspended set back pushing rods when cooling water flow rate lower than predetermined value. Therefore, pushing rods effectively prevented being deformed or degraded due boiling cooling water within pushing rods. Thus, higher safety secured.

(5) The apparatus for removing large lumps coating monitors what static grate by monitoring means, so that what static grate always monitored, large lumps coating found without fail early. The lens monitoring means protected flying substances such clinker, coating like by protection shutter for covering lens predetermined time intervals. Thus, lens prevented being broken or contaminated, frequency maintenance for replacement, cleaning like lens decreased. Accordingly, it remarkable because monitoring by worker becomes easy, high-temperature dangerous work decreased, maintenance control made advantageously. As result, cement produced more stably, its productivity further improved.