CN117869899A - Grate furnace system for garbage incineration - Google Patents

Abstract

The invention discloses a grate furnace system for garbage incineration, which comprises a feed hopper and a pusher, wherein the pusher is positioned at a discharge hole of the feed hopper, and the grate furnace system further comprises: the first grate set is arranged adjacent to the pusher and is positioned below the pusher; the second fire grate set is arranged adjacent to the first fire grate set and is positioned below the first fire grate set; the third fire grate set is arranged adjacent to the second fire grate set and is positioned below the second fire grate set; wherein, first fire grate group, second fire grate group, third fire grate group and furnace wall enclose synthetic combustion space, and the one end and the discharge gate intercommunication of combustion space, the one end and the slag dropping pipe intercommunication of discharge gate are kept away from to the combustion space, and the one end and the slag extractor connection of slag dropping pipe kept away from the combustion space. Through the height fall among the pusher, the first fire grate set, the second fire grate set and the third fire grate set, the garbage to be combusted can be ensured to roll and scatter in the combustion space, and the combustion efficiency of the garbage to be combusted is effectively improved.

Description

Grate furnace system for garbage incineration

Technical Field

The invention relates to the technical field of garbage disposal, in particular to a grate furnace system for garbage incineration.

Background

The grate furnace system is core key equipment of a garbage incineration power generation project, household garbage is generally put into a feed hopper through a garbage grab bucket, is conveyed to a grate by a pushing equipment, and after full combustion, flue gas enters a waste heat boiler, and slag is conveyed to a slag pit by a slag extractor. However, the existing domestic grate furnace system has the problems of unstable combustion, inconvenient operation and maintenance and the like, and affects the garbage incineration efficiency, thereby affecting the efficiency of the power generation project.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

In view of the above, the grate furnace system for garbage incineration provided by the invention can ensure that garbage to be combusted rolls and falls in a combustion space through the height fall among the pusher, the first grate set, the second grate set and the third grate set, effectively improves the combustion efficiency of the garbage to be combusted, and further ensures the overall efficiency of large-scale projects.

Specifically, the method comprises the following technical scheme:

the invention provides a grate furnace system for garbage incineration, which comprises a feed hopper and a pusher, wherein the pusher is positioned at a discharge port of the feed hopper, and the grate furnace system further comprises:

the first fire grate set is arranged adjacent to the pusher, and is positioned below the pusher;

the second fire grate set is arranged adjacent to the first fire grate set and is positioned below the first fire grate set;

the third fire grate set is arranged adjacent to the second fire grate set and is positioned below the second fire grate set;

the first fire grate group, the second fire grate group, the third fire grate group and the hearth wall enclose to form a combustion space, one end of the combustion space is communicated with the discharge hole, one end of the combustion space, which is far away from the discharge hole, is communicated with a slag dropping pipe, and one end of the slag dropping pipe, which is far away from the combustion space, is connected with a slag extractor.

Further, the feeder hopper is including oblique fill, expansion joint, the chute that connects gradually, oblique fill includes inclination section and changeover portion, the changeover portion with the chute passes through expansion joint connects.

Further, the feeding hopper further comprises a bridging breaking module which is arranged on the transition section of the inclined hopper, the bridging breaking module comprises a telescopic piece, the extending end of the telescopic piece is positioned in the transition section, an agitating plate is hinged to the extending end of the telescopic piece, and the agitating plate is hinged to the inner wall of the transition section.

Further, the feed hopper further comprises: the support frame is arranged at one end of the chute, which is far away from the telescopic joint, and is provided with a header protection module which is fixedly connected with the hearth wall.

Further, the pusher includes:

the support base is obliquely arranged on the feeding platform;

the first driving oil cylinder is arranged at one end of the supporting base, which is away from the feeding platform, and a pushing trolley is arranged at the extending end of the driving oil cylinder;

the support base is provided with a track, the track is located at one end, far away from the driving oil cylinder, of the support base, and the pushing trolley is used for moving on the track.

Further, the pusher further comprises:

the sealing cover shell is fixedly arranged on the supporting base, a sliding seal is arranged on the sealing cover shell, the extending end of the first driving oil cylinder penetrates through the sliding seal and is hinged with the pushing trolley, and a manhole is arranged on one side, facing the first driving oil cylinder, of the sealing cover shell.

Further, the first fire grate set includes a fire grate body, the second fire grate set includes three fire grate bodies, the third fire grate set includes two fire grate bodies, the fire grate bodies include:

the support frame is provided with a moving plate on the inner wall, a plurality of fixed plates are arranged on the moving plate, and one ends of the fixed plates, far away from the moving plate, are connected with a moving connecting rod;

the fixed end of the second driving oil cylinder is fixedly connected with the supporting frame, the extending end of the second driving oil cylinder is positioned in the supporting frame, and the extending end of the second driving oil cylinder is hinged with the moving plate;

the fixed connecting rod is fixedly arranged in the supporting frame, the fixed connecting rod is parallel to the axis of the movable connecting rod, the fixed connecting rod is arranged at intervals with the movable connecting rod, fire grate pieces are fixedly arranged on the fixed connecting rod and the movable connecting rod, and two adjacent fire grate pieces are connected in a lap joint mode.

Further, the grate body further comprises a sliding assembly, the sliding assembly comprises a first supporting plate and a pair of second supporting plates arranged on the first supporting plate, the first supporting plate is fixedly connected with the inner wall of the supporting frame, a pair of rollers are arranged in the second supporting plates and used for supporting the moving plate, and the axes of the rollers are perpendicular to the moving direction of the moving plate.

Further, the fire grate body further comprises a limit adjusting plate fixedly connected with the inner wall of the supporting frame, the limit adjusting plate is located below the fixing plate, a limit groove is formed in the limit adjusting plate, the fixing plate is located in the limit groove, and the moving plate is located between the limit adjusting plate and the inner wall of the supporting frame.

Further, the fire grate segment comprises:

a sheet body;

the connecting groove is arranged at one end of the sheet body and is used for being connected with the movable connecting rod or the fixed connecting rod;

and the supporting legs are arranged at one end of the sheet body, which is far away from the connecting groove, and are overlapped with the adjacent fire grate sheets.

The grate furnace system for the garbage incineration provided by the embodiment of the invention comprises a feed hopper and a pusher, wherein the pusher, the first grate set, the second grate set and the third grate set are sequentially connected, the first grate set is positioned below the pusher, the second grate set is positioned below the first grate set, the third grate set is positioned below the second grate set, the pusher pushes garbage falling from the feed hopper onto the first grate set for drying, the garbage dried by the first grate set enters the second grate set for burning, and the burned garbage enters the third grate set for burning out, so that the burning efficiency of the garbage is improved.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a grate system for refuse incineration according to one embodiment of the present invention;

FIG. 2 is a schematic view of a feed hopper according to one embodiment of the invention;

FIG. 3 is a schematic view of a pusher according to one embodiment of the present invention;

FIG. 4 is a schematic view of a sloping grate body according to one embodiment of the present invention;

FIG. 5 is a schematic view of a horizontal grate body with ash hoppers removed according to one embodiment of the invention;

fig. 6 is a schematic view of a fire grate segment according to an embodiment of the present invention.

The correspondence between the reference numerals and the component names in fig. 1 to 6 is:

100 feed hoppers, 110 inclined hoppers, 111 inclined sections, 112 transition sections, 120 bridge cracking modules, 121 telescopic members, 122 stirring plates, 130 telescopic joints, 140 trays, 150 supporting frames, 160 header protection modules, 200 ejectors, 210 supporting bases, 211 supporting rods, 212 drop connecting rods, 220 first driving cylinders, 230 travel switches, 240 sliding seals, 250 sealing covers, 260 pushing trolleys, 261 stepped surfaces, 270 tracks, 300 grate bodies, 310 supporting frames, 311 combustion supporting tuyeres, 312 inspection manholes, 313 ash falling hoppers, 314 flap valves, 320 second driving cylinders, 330 moving plates, 340 fixing plates, 350 moving connecting rods, 360 fixing connecting rods, 370 sliding assemblies, 371 first supporting plates, 372 second supporting plates, 373 rollers, 374 rib plates, 380 limiting adjusting plates, 390 grate sheets, 391 sheet bodies, 392 connecting grooves, 393 supporting legs, 400 hearth walls, 410 front arches, 420 rear arches, 500 slag falling pipes, 600 slag tapping machines, 700 conveyors and 800 smoke outlets.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Before describing embodiments of the present invention in further detail, the terms of orientation, such as "upper", "lower", "side", used in the examples of the present invention are not intended to limit the scope of the present invention.

In order to make the technical scheme and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of a grate system for waste incineration according to one embodiment of the present invention.

As shown in fig. 1, the present invention provides a fire grate system for garbage incineration, comprising a feed hopper 100 and a pusher 200, the pusher 200 being located at a discharge port of the feed hopper 100, the fire grate system further comprising:

a first grate set disposed adjacent to the pusher 200, the first grate set being positioned below the pusher 200;

the second fire grate set is arranged adjacent to the first fire grate set and is positioned below the first fire grate set;

the third fire grate set is arranged adjacent to the second fire grate set and is positioned below the second fire grate set;

wherein, the first fire grate group, the second fire grate group, the third fire grate group and the furnace chamber wall 400 enclose into a combustion space, one end of the combustion space is communicated with the discharge hole, one end of the combustion space far away from the discharge hole is communicated with the slag dropping pipe 500, and one end of the slag dropping pipe 500 far away from the combustion space is connected with the slag extractor 600.

The grate furnace system comprises a feed hopper 100 and a pusher 200, wherein the pusher 200, a first grate group, a second grate group and a third grate group are sequentially connected, the first grate group is positioned below the pusher 200, the second grate group is positioned below the first grate group, the third grate group is positioned below the second grate group, the pusher 200 pushes garbage falling from the feed hopper 100 onto the first grate group to dry, the garbage dried by the first grate group enters the second grate group to burn, the burned garbage enters the third grate group to burn out, and the combustion efficiency of the garbage is improved.

Specifically, a corresponding number of ejectors 200 are generally selected according to the amount of the waste to be incinerated, two ejectors 200 are selected to be arranged side by side and simultaneously extend or retract to push the waste at the outlet of the feeding hopper 100, push the waste onto the first grate set, dry the waste, or select one, two or more ejectors 200 according to the width in the furnace, so that the ejectors 200 can be matched with the width of the furnace, ensure that the waste falling from the feeding hopper 100 can be pushed onto a grate set below the furnace, push the waste onto the second grate set by the movement of the grate sheets 390 on the first grate set, burn the waste, push the waste onto the third grate set by the movement of the grate sheets 390 on the second grate set, burn the waste, finally push the burned waste into the slag dropping pipe 500 by the movement of the grate sheets 390 on the third grate set, drop the slag dropping pipe 500 on the slag dropping machine 600, drag the burned waste out of the furnace, pile up the slag, and ensure the continuous operation of the slag discharging system.

It should be noted that the first fire grate group mainly plays a role in drying garbage, namely, the moisture in the garbage is reduced, the subsequent ignition is facilitated, and the garbage belongs to a drying section; the second fire grate group mainly burns garbage and belongs to a combustion section; the third fire grate group is mainly used for burning out garbage, belongs to a burning-out section, effectively reduces the whole volume of the garbage, is beneficial to prolonging the life cycle of a landfill, and effectively solves the problem of building the floor area of the landfill.

Still further, the height of the slag dropping pipe 500 is usually compressed to about 100cm, so that the accumulation of ash can be avoided while the height of a factory building is effectively controlled, the ash can be timely conveyed out, and the working reliability of a grate furnace system is ensured. In order to effectively reduce the overall height of the plant, a portion of the tapping machine 600 may be disposed below, which will not be described herein.

In a possible implementation manner, the first grate set and the second grate set are obliquely arranged, so that on one hand, garbage can enter the next grate set, on the other hand, along with the reciprocating pushing of the grate 390, the rolling and scattering of the garbage are facilitated, the drying efficiency and the combustion efficiency of the garbage are improved, the third grate set adopts a horizontal arrangement mode, on the other hand, the garbage in the burning section basically becomes ash, the diameter of the garbage is smaller relative to that of the garbage in the previous working procedure, and the leakage of the ash can be reduced by adopting a horizontal arrangement mode, so that the reliability of a grate furnace system is improved.

Still further, the height difference among the pusher 200, the first grate set, the second grate set and the third grate set is generally within one meter, so that the overall height of the grate system can be controlled, the height difference can be selected from 80cm to 100cm, the height of a factory building can be controlled, meanwhile, effective rolling and scattering of garbage can be ensured, and the combustion efficiency is improved.

In a possible real-time manner, the furnace wall 400 comprises a front arch 410, a rear arch 420 and side walls, wherein one end of the front arch 410 is connected with the blanking hopper, the rear end of the front arch 410 is connected with the smoke outlet 800, one end of the rear arch 420 is connected with the smoke outlet 800, the other end of the rear arch 420 is connected with the slag dropping pipe 500, the smoke outlet 800 is limited above the second fire grate set, namely above the combustion section through the lengths of the front arch 410 and the rear arch 420, and the combustion temperature is the highest, so that the combustion is facilitated. The garbage capacity of the grate system can be increased according to the width between the two side walls, and the number of ejectors 200 and the width of the grate body 300 matched with the width are required.

Further, as shown in fig. 1, the angles of the front arch 410 and the rear arch 420 are shown in a, a is the front arch 410 angle, b is the rear arch 420 angle, and when the front arch 410 angle is larger and the rear arch 420 angle is smaller, the area and the height of the hearth can be increased, so that the reasonable front arch 410 angle and rear arch 420 angle are selected according to the garbage disposal amount, the high rationality is ensured, and the garbage combustion efficiency is further improved.

It should be noted that, the hearth is made of refractory bricks, the refractory bricks have good high temperature resistance, can work for a long time at a temperature above 1000 ℃, improve the service life of the hearth wall 400, and also have good abrasion resistance, and because the refractory bricks have high hardness and high density, the surfaces of the refractory bricks are not easy to wear, so that the surface smoothness and the mechanical strength can be kept for a long time at high temperature, the service life of the hearth wall 400 is further improved, and finally the refractory bricks have good heat insulation performance, so that the refractory bricks have excellent heat preservation performance in a high-temperature environment, avoid heat loss in the hearth, and improve the combustion efficiency.

FIG. 2 is a schematic view of a feed hopper according to one embodiment of the invention.

In one possible embodiment, as shown in fig. 2, the feed hopper 100 includes a sloped hopper 110, a telescopic joint 130, and a chute 140 connected in sequence, where the sloped hopper 110 includes a sloped section 111 and a transition section 112, and the transition section 112 is connected to the chute 140 by the telescopic joint 130.

The garbage passes through the feeding hopper 100, then falls to the position of the pusher 200 after passing through the inclined hopper 110, the telescopic joint 130 and the chute 140 in sequence, pushes the garbage onto the first fire grate group through the pusher 200, and the inclined hopper 110 is arranged to be an inclined section 111 and a transition section 112, so that the garbage can smoothly fall to the position of the pusher 200 under the action of self gravity on one hand, and the inclined section 111 can ensure that the garbage gradually falls to avoid blocking caused by direct falling.

It should be noted that, two pipelines (the transition section 112 and the chute 140) are connected through the expansion joint 130, a certain amount of heat is generated when garbage is burned in the hearth, the expansion joint 130 is arranged to absorb the thermal expansion amount, the compensation effect is achieved on the adjacent pipelines, and the service life of the pipelines can be prolonged.

In a possible embodiment, the feeding hopper 100 further includes a bridge breaking module 120 disposed on the transition section 112 of the inclined hopper 110, the bridge breaking module 120 includes a telescopic member 121, an extending end of the telescopic member 121 is located in the transition section 112, an agitating plate 122 is hinged on the extending end of the telescopic member 121, and the agitating plate 122 is further hinged with an inner wall of the transition section 112.

When too much garbage enters the inclined hopper 110, the garbage is easy to accumulate in the transition section 112 to cause blockage, the telescopic piece 121 stretches out to drive the stirring plate 122 to swing back and forth in the transition section 112 to stir the accumulated garbage, the position and angle of part of garbage are changed, smooth falling of the garbage is facilitated, that is, when the garbage is accumulated, the stirring plate 122 is positioned on one side inner wall close to the transition section 112, when the garbage is blocked, the telescopic piece 121 stretches out to drive the bottom end of the stirring plate 122 to move towards one end far away from the telescopic piece 121, the accumulated garbage is stirred, and the smoothness of garbage blanking is guaranteed.

The telescopic member 121 may be an electric telescopic rod or a hydraulic telescopic rod.

In one possible embodiment, the feed hopper 100 further comprises: the support frame 150 is arranged at one end of the chute 140 far away from the expansion joint 130, the support frame 150 is provided with a header protection module 160, and the header protection module 160 is fixedly connected with the hearth wall 400.

Through the setting of the support frame 150, there is a connection effect to the header protection module 160 and the chute 140, on one hand, the stroke of the garbage blanking is lengthened, the capacity of the garbage that can fall is improved, on the other hand, the reliability of the connection between the feed hopper 100 and the furnace chamber wall 400 can be guaranteed, and generally, the header protection module 160 is fixedly connected with one end of the front arch 410, which is far away from the smoke outlet 800.

Fig. 3 is a schematic view of a pusher according to an embodiment of the present invention.

In one possible embodiment, as shown in fig. 3, the pusher 200 includes:

the supporting base 210 is obliquely arranged on the feeding platform;

the first driving oil cylinder 220 is arranged at one end of the supporting base 210, which is away from the feeding platform, and a pushing trolley 260 is arranged at the extending end of the driving oil cylinder;

the support base 210 is provided with a rail 270, the rail 270 is located at one end of the support base 210 far away from the driving oil cylinder, and the pushing trolley 260 is used for moving on the rail 270.

The garbage falling from the feeding hopper 100 can be pushed onto the first fire grate set through the arrangement of the pusher 200, the pushing trolley 260 is driven to move on the supporting base 210 through the first driving oil cylinder 220, so that the garbage is pushed onto the first fire grate set, the supporting base 210 can be guaranteed to be obliquely arranged through the arrangement of the supporting rods 211 with different heights, one end, far away from the first driving oil cylinder 220, of the supporting base 210 is provided with the drop connecting rod 212, the drop connecting rod 212 is connected with the first fire grate set, and the height difference of the pusher 200 and the first fire grate assembly is guaranteed.

It should be noted that, the track 270 is disposed at one end of the support base 210 far away from the driving oil cylinder, and the pushing trolley 260 is located on the track 270, so that the reciprocating movement of the pushing trolley 260 can be ensured to be smooth, and the working stability and the working efficiency of the pusher 200 can be ensured.

In a feasible real-time mode, one side of the pushing trolley 260 deviating from the first driving oil cylinder 220 is a step surface 261, and due to the inclined arrangement of the pusher 200, the side surface of the pushing trolley 260 pushing garbage is the step surface 261, so that on one hand, garbage can be pushed down better, the efficiency and reliability of pushing garbage are improved, on the other hand, garbage can be pushed onto the first grate group in a layered manner, the dispersibility of the garbage is guaranteed, the uniformity of the distribution of the garbage on the first grate group can be guaranteed, and the drying efficiency of the garbage is improved.

It should be noted that, the telescopic end of the first driving oil cylinder 220 is provided with a travel switch 230, and the travel of the first driving oil cylinder 220 is limited by the setting of the travel switch 230, so that the travel track of the pushing trolley 260 can be always on the track 270, and the derailment of the pushing trolley 260 is avoided, so that the normal operation of the pusher 200 is affected. When the travel switch 230 touches the sliding seal 240, the first driving cylinder 220 stops extending, and the pushing trolley 260 reaches the pushing limit position.

In one possible embodiment, the pusher 200 further comprises:

the sealing cover shell 250 is fixedly arranged on the supporting base 210, the sliding seal 240 is arranged on the sealing cover shell 250, the extending end of the first driving oil cylinder 220 passes through the sliding seal 240 and is hinged with the pushing trolley 260, and a manhole is arranged on one side of the sealing cover shell 250 facing the first driving oil cylinder 220.

Wherein, through setting up sliding seal 240 in the sealed housing 250, the extension end of first actuating cylinder 220 passes sliding seal 240 and pushes away material dolly 260 articulated, can avoid bringing rubbish and dust out and get into in the cylinder body of first actuating cylinder 220, influences first actuating cylinder 220's life.

Still further, an access hole is provided on a side of the sealing cover 250 facing the cylinder body of the first driving cylinder 220, and the sliding seal 240 may be inspected through the access hole, or the rail 270 on the support base 210 and the pushing trolley 260 may be maintained and inspected, which is more convenient.

FIG. 4 is a schematic view of a sloping grate body according to one embodiment of the present invention; fig. 5 is a schematic view of a horizontal grate body with a drop hopper removed in accordance with an embodiment of the present invention.

In one possible embodiment, as shown in fig. 4 and 5, the first fire grate set includes one fire grate body 300, the second fire grate set includes three fire grate bodies 300, the third fire grate set includes two fire grate bodies 300, the fire grate bodies 300 include:

the support frame 310, the inner wall of the support frame 310 is provided with a movable plate 330, the movable plate 330 is provided with a plurality of fixed plates 340, and one end of the plurality of fixed plates 340 far away from the movable plate 330 is connected with a movable connecting rod 350;

the second driving oil cylinder 320, the fixed end of the second driving oil cylinder 320 is fixedly connected with the supporting frame 310, the extending end of the second driving oil cylinder 320 is positioned in the supporting frame 310, and the extending end of the second driving oil cylinder 320 is hinged with the moving plate 330;

the fixed connecting rod 360 is fixedly arranged in the supporting frame 310, the fixed connecting rod 360 is parallel to the axis of the movable connecting rod 350, the fixed connecting rod 360 and the movable connecting rod 350 are arranged at intervals, the fixed connecting rod 360 and the movable connecting rod 350 are fixedly provided with fire grate segments 390, and two adjacent fire grate segments 390 are in lap joint.

The length of the drying section, the combustion section and the burning-out section is set according to the requirement, in this embodiment, the drying of the garbage can be realized through one fire grate body 300, so that the garbage meets the combustion requirement, the combustion section is an important link for garbage disposal, therefore, three fire grate bodies 300 are set as the combustion section, and two fire grate bodies 300 are set in the burning-out section, thereby realizing the reduction of the garbage volume and facilitating the subsequent garbage disposal. Different numbers of grate bodies 300 can also be provided in the drying section, the combustion section, and the ember section, depending on customer requirements.

It should be noted that, the fire grate of the longer burning section and the burning-out section is subjected to modularized treatment, that is, each fire grate body 300 is provided with an inspection manhole 312 and a combustion air inlet, each inspection manhole 312 only overhauls and maintains the fire grate within a certain length range, so that the convenience and efficiency of overhauling and maintaining are improved; each combustion-supporting air port 311 only supplies air to the fire grate within a certain length range, so that the uniformity of the air supply is improved, and the drying efficiency, the combustion efficiency and the burnout efficiency of the garbage are improved.

Specifically, the moving plate 330 is driven to move by the expansion and contraction of the second driving cylinder, the moving plate 330 drives the plurality of fixing plates 340 thereon to move, the moving of the fixing plates 340 drives the moving connecting rod 350 and the fire grate 390 on the moving connecting rod 350 to move together in sequence, at this time, the fixing connecting rod 360 and the fire grate 390 thereon are fixedly connected with the supporting frame 310, meanwhile, the fixing connecting rod 360 and the moving connecting rod 350 are arranged at intervals, and then the fire grate 390 on the moving connecting rod 350 can reciprocate on the fire grate 390 on the fixing connecting rod 360 under the driving of the second driving cylinder 320, so as to realize the pushing of the garbage on the fire grate body and enter the subsequent procedures. The reciprocating grate body 300 is thus constructed in a simple and convenient manner.

In a possible implementation manner, a blanking hopper is arranged below the supporting frame 310, a combustion-supporting tuyere 311 and a maintenance manhole 312 are arranged on the blanking hopper, a flap valve 314 is arranged at one end of the blanking hopper away from the supporting frame 310, a conveyor 700 is connected to one side of the flap valve 314 away from the blanking hopper, and part of garbage can not directly fall from a gap of the fire grate 390 due to the moving mode of the fire grate 390, so that the ash falling hopper 313 is arranged, the leaked garbage sequentially passes through the flap valve 314 of the ash falling hopper 313 and then enters the conveyor 700, the conveying end is communicated with the slag falling pipe 500, and the leaked garbage falls onto the slag extractor 600 through the slag falling pipe 500 to carry out subsequent burying treatment of the garbage.

Wherein, the setting of upset board can avoid rubbish to directly fall on conveyer 700 from higher, influences the normal operating of conveyer 700, and the upset board can also improve the discharge efficiency of rubbish.

It should be noted that, be equipped with the protection casing on the second driving cylinder 320 that is located the support frame 310 inside, avoid the rubbish that drops from grate 390 clearance to pollute second driving cylinder 320, simultaneously can also set up air-cooled module on the protection, cool off second driving cylinder 320, guarantee the stability of second driving cylinder 320 work on the one hand, and then improve the stability of grate body 300 work, on the other hand can also prolong the maintenance interval time of second driving cylinder 320, improve the life of second driving cylinder 320, and then improve grate body 300 operational reliability and operating duration.

In a possible embodiment, the grate body 300 further includes a sliding assembly 370, the sliding assembly 370 includes a first support plate 371 and a pair of second support plates 372 disposed on the first support plate 371, the first support plate 371 is fixedly connected to an inner wall of the support frame 310, rollers 373 are disposed in the pair of second support plates 372, the rollers 373 are used for supporting the moving plate 330, and an axis of the rollers 373 is perpendicular to a moving direction of the moving plate 330.

The pulleys on the sliding components 370 are in contact with the moving plate 330, two sliding components 370 are generally arranged and are respectively located at two ends of the moving plate 330, the second driving oil cylinder 320 is hinged to the middle section of the moving plate 330, on one hand, the second driving oil cylinder can have a supporting effect on the moving plate 330 to ensure the moving stability of the moving plate 330, on the other hand, the mechanical load of the movement of the fire grate body 300 can be reduced, the rollers 373 and the moving plate 330 form rolling friction, heat and abrasion generated on the moving plate 330 can be reduced, the service life of the moving plate 330 is prolonged, meanwhile, noise generated by the rolling friction is small, and noise pollution of the working environment of workers is reduced.

It should be noted that, the first connecting plate is connected with the inner wall of the supporting frame 310 through the rib plate 374, so that the stability of the first connecting plate can be improved, and further, the effective contact between the roller 373 and the moving plate 330 can be ensured, and the working stability of the grate body 300 is ensured.

In a possible embodiment, the grate body 300 further includes a limit adjusting plate 380 fixedly connected to the inner wall of the supporting frame 310, the limit adjusting plate 380 is located below one fixing plate 340, a limit groove is formed in the limit adjusting plate 380, the fixing plate 340 is located in the limit groove, and the moving plate 330 is located between the limit adjusting plate 380 and the inner wall of the supporting frame 310.

Wherein, inclination of spacing regulating plate 380 is unanimous with the inclination of grate body 300, is equipped with the spacing groove on the one side of spacing regulating plate 380 orientation fixed plate 340, and a fixed plate 340 setting of middle part is in this spacing inslot generally, and the both ends of spacing regulating plate 380 can not interfere with other fixed plates 340, and such setting can have certain supporting role to fixed plate 340, plays the effect of stable fixed connection pole 360 and movable connection pole 350 work.

It should be noted that, the second driving oil cylinders 320, the moving plate 330, the fixed plate 340, the sliding component 370 and the limiting adjusting plate 380 are disposed on two sides of the inner wall of the supporting frame 310, so that stability of supporting the moving connecting rod 350 and the fixed connecting rod 360 can be improved, stability of operation of the fire grate 390 is ensured, gaps between the fire grate 390 are reduced as much as possible, and stability and reliability of combustion are ensured. It will be appreciated that when the amount of waste to be treated by the grate system is large, the corresponding grate bodies 300 may be added in the width direction of the drying section, the combustion section and the burnout section of the grate system, that is, for example, in the drying section, 2, 3 or more grate bodies 300 may be arranged side by side in the width direction of the drying section, so as to increase the amount of waste to be treated by the grate system, and the distance between the two sidewalls of the furnace may be determined according to the width of the grate set.

Fig. 6 is a schematic view of a grate segment 390 according to one embodiment of the invention.

In one possible embodiment, as shown in FIG. 6, the grate segment comprises:

a sheet body 391;

the connecting groove 392 is arranged at one end of the sheet body 391, and the connecting groove 392 is used for connecting with the movable connecting rod 350 or the fixed connecting rod 360;

the supporting legs 393 are disposed at one end of the sheet body 391 away from the connecting groove 392, and the supporting legs 393 overlap with the adjacent fire grate sheets 390.

After the connecting groove 392 is clamped with the fixed connecting rod 360 or the movable connecting rod 350, the supporting legs 393 of the fire grate sheets 390 are lapped on one surface of the downstream sheet body 391 away from the connecting groove 392, so that on one hand, the gap between two adjacent rows of fire grate sheets 390 can be reduced, and the air of the combustion-supporting air port 311 is prevented from entering the upper part of the fire grate sheets 390 from the gap between the fire grate sheets 390 and cannot participate in combustion, thereby influencing the combustion efficiency of garbage; on the other hand, the installation difficulty of the fire grate 390 is reduced, and the installation efficiency of the fire grate 390 is improved.

In the present disclosure, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. The specification and examples are to be regarded in an illustrative manner only.

The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.

Claims (10)

1. A fire grate system for msw incineration, includes feeder hopper and pusher, the pusher is located the discharge gate department of feeder hopper, its characterized in that, fire grate system still includes:

the first fire grate set is arranged adjacent to the pusher, and is positioned below the pusher;

the second fire grate set is arranged adjacent to the first fire grate set and is positioned below the first fire grate set;

the third fire grate set is arranged adjacent to the second fire grate set and is positioned below the second fire grate set;

the first fire grate group, the second fire grate group, the third fire grate group and the hearth wall enclose to form a combustion space, one end of the combustion space is communicated with the discharge hole, one end of the combustion space, which is far away from the discharge hole, is communicated with a slag dropping pipe, and one end of the slag dropping pipe, which is far away from the combustion space, is connected with a slag extractor.

2. The grate furnace system for refuse incineration according to claim 1, wherein the feed hopper comprises an inclined hopper, an expansion joint and a chute which are connected in sequence, the inclined hopper comprises an inclined section and a transition section, and the transition section is connected with the chute through the expansion joint.

3. The grate furnace system for waste incineration according to claim 2, wherein the feed hopper further comprises a bridge breaking module arranged on the transition section of the inclined hopper, the bridge breaking module comprises a telescopic piece, the extending end of the telescopic piece is positioned in the transition section, the extending end of the telescopic piece is hinged with a stirring plate, and the stirring plate is hinged with the inner wall of the transition section.

4. The fire grate system for refuse incineration according to claim 2, characterised in that the feed hopper further comprises: the support frame is arranged at one end of the chute, which is far away from the telescopic joint, and is provided with a header protection module which is fixedly connected with the hearth wall.

5. The fire grate system for refuse incineration according to claim 1, characterised in that the pusher comprises:

the support base is obliquely arranged on the feeding platform;

the first driving oil cylinder is arranged at one end of the supporting base, which is away from the feeding platform, and a pushing trolley is arranged at the extending end of the driving oil cylinder;

the support base is provided with a track, the track is located at one end, far away from the driving oil cylinder, of the support base, and the pushing trolley is used for moving on the track.

6. The fire grate system for refuse incineration according to claim 5, characterised in that the pusher further comprises:

the sealing cover shell is fixedly arranged on the supporting base, a sliding seal is arranged on the sealing cover shell, the extending end of the first driving oil cylinder penetrates through the sliding seal and is hinged with the pushing trolley, and a manhole is arranged on one side, facing the first driving oil cylinder, of the sealing cover shell.

7. The fire grate system for refuse incineration according to claim 1, wherein the first fire grate set comprises one fire grate body, the second fire grate set comprises three fire grate bodies, the third fire grate set comprises two fire grate bodies, the fire grate bodies comprising:

the support frame is provided with a moving plate on the inner wall, a plurality of fixed plates are arranged on the moving plate, and one ends of the fixed plates, far away from the moving plate, are connected with a moving connecting rod;

the fixed end of the second driving oil cylinder is fixedly connected with the supporting frame, the extending end of the second driving oil cylinder is positioned in the supporting frame, and the extending end of the second driving oil cylinder is hinged with the moving plate;

the fixed connecting rod is fixedly arranged in the supporting frame, the fixed connecting rod is parallel to the axis of the movable connecting rod, the fixed connecting rod is arranged at intervals with the movable connecting rod, fire grate pieces are fixedly arranged on the fixed connecting rod and the movable connecting rod, and two adjacent fire grate pieces are connected in a lap joint mode.

8. The fire grate system for refuse incineration according to claim 7, wherein the fire grate body further comprises a sliding assembly, the sliding assembly comprises a first support plate and a pair of second support plates arranged on the first support plate, the first support plate is fixedly connected with the inner wall of the support frame, a pair of rollers are arranged in the second support plates, the rollers are used for supporting the moving plate, and the axis of the rollers is perpendicular to the moving direction of the moving plate.

9. The fire grate system for incinerating waste of claim 7, wherein the fire grate body further comprises a limit adjusting plate fixedly connected with the inner wall of the supporting frame, wherein the limit adjusting plate is positioned below one of the fixing plates, a limit groove is formed in the limit adjusting plate, the fixing plate is positioned in the limit groove, and the moving plate is positioned between the limit adjusting plate and the inner wall of the supporting frame.

10. The fire grate system for refuse incineration according to claim 7, wherein the fire grate segment comprises:

a sheet body;

the connecting groove is arranged at one end of the sheet body and is used for being connected with the movable connecting rod or the fixed connecting rod;

and the supporting legs are arranged at one end of the sheet body, which is far away from the connecting groove, and are overlapped with the adjacent fire grate sheets.