Pressureless rail ring type coal gangue decarbonization machine

Abstract

The present invention discloses a pressureless rail-ring type gangue decarbonizer, comprising a frame, a furnace cover, an operating system, and a ventilation system. The operating system includes a trolley plate, multiple trolley frames, a pressureless rail unloading mechanism, multiple intelligent hydraulic blocking wheels, and a flexible power mechanism. The flexible power mechanism drives the trolley plate to rotate, and the rotation of the trolley plate drives the burning gangue material into seven fan-shaped sections for decarbonization. The pressureless rail-ring type gangue decarbonizer of the present invention has a ring structure and strong overall stability. The ring structure design of the decarbonizer can save more steel structure and equipment materials, reducing investment costs by at least 10%. The positive pressure sliding seal connection between the trolley baffle and the furnace cover of the present invention has good sealing performance, preventing the gangue clinker from bursting and pulverizing. Hot air can be freely adjusted to adapt to various air distribution processes and meet the process requirements of energy conservation and environmental protection.

Description

Technical Field

[0001] The present invention relates to the production of coal gangue ceramsite, and more particularly to a pressureless rail ring type coal gangue decarbonization machine. Background Art

[0002] Gangue is a solid waste generated during coal mining and washing. It is a dark gray rock that is harder than coal and has a low carbon content. Gangue production accounts for approximately 18% of total coal production, and my country is the world's largest producer of gangue. Annually, 650 million tons of gangue are generated, and my country's current stockpile of gangue reaches 10 billion tons, covering an area of ​​20,000 mu (approximately 16,000 acres). While this occupies significant land, the sulfide emissions from the gangue have detrimental effects on soil, water resources, the ecological environment, and public health. Therefore, transforming gangue into valuable resources is crucial.

[0003] The chemical composition and physicochemical properties of coal gangue are similar to those of clay. After decarbonization, gangue can be used as lightweight aggregate for cement, a stone replacement in concrete, and porous gravel for water conservation in deserts. Cement and construction industries have a high demand for lightweight aggregate for cement, consuming significant quantities of gangue. However, these two sectors place high demands on lightweight aggregate. Residual carbon and sulfur in gangue negatively impact the strength, density, and water absorption of lightweight aggregate, necessitating decarbonization to achieve the desired physical and chemical properties. Gangue requires complex processing to meet these requirements, but its low profit margins result in a lack of market momentum. Therefore, reducing costs and increasing production are key to boosting the market momentum of gangue products and addressing environmental concerns. In addition to cost reduction through process measures, equipment investment is also particularly important.

[0004] In my country, decarbonization equipment for gangue includes sintering machines, rotary kilns, and belt roasters. Sintering machines and rotary kilns have poor sealing properties. During the sintering process, gas is generated within the lightweight aggregate, increasing internal stress, leading to cracking and pulverization, resulting in a low yield. This results in poor product quality and uniformity, making large-scale production impossible. Belt roasters can achieve large-scale production and guarantee product quality, but they are linear devices with significant investment costs, large floor space, and long feed and discharge distances, which increases operating costs. Furthermore, the trolley utilization rate is low, reaching only 40% of the total number of trolleys, resulting in significant heat losses and virtually no economic benefits. Summary of the Invention

[0005] The present invention provides a pressureless rail-ring type coal gangue decarbonization machine. The ring structure design reduces equipment cost and floor space, and has good sealing performance. The coal gangue can be decarbonized and processed into cement lightweight aggregate, a substitute for stone in concrete, and porous gravel for conserving moisture in the desert.

[0006] In order to achieve these objects and other advantages of the present invention, a pressureless rail ring type coal gangue decarbonization machine is provided, comprising:

[0007] frame;

[0008] a furnace cover fixed to the frame, the furnace cover forming a ring-like structure with ends disconnected, the furnace cover being divided into seven sector-shaped sections by refractory brick partition walls, the seven sector-shaped sections being drying section 1, drying section 2, preheating section, roasting section, cooling section 1, cooling section 2, and cooling section 3, the drying section 1 being adjacent to a feeding area, the cooling section 3 being adjacent to a discharging area, the feeding area being provided with an ignition burner, and supplementary heat burners being provided on the sides of the sector-shaped sections corresponding to the preheating section and roasting section;

[0009] An operating system is provided below the furnace cover and comprises:

[0010] A trolley plate, which is annular and evenly divided into a plurality of sector-shaped hollow structures of equal size. Annular trolley baffles are respectively provided on both sides of the inner and outer rings of the upper plane of the trolley plate. The top of the trolley baffle is slidably and sealedly connected to the bottom of the furnace cover.

[0011] Multiple trolley frames, one trolley frame is arranged in a fan-shaped hollow structure, one trolley frame is provided with a grate module, and the trolley baffle and the grate module form an annular groove for placing materials;

[0012] The railless unloading mechanism includes a turning shaft and a turning control component. The upstream sector edge of a trolley frame is hinged to the sector hollow structure via a turning shaft. The downstream sector edge of a trolley frame is provided with a turning control component. The turning control component drives the downstream sector edge to descend, causing the trolley frame to lose balance.

[0013] A plurality of intelligent hydraulic blocking wheels are evenly arranged on the inner ring of the trolley plate, the intelligent hydraulic blocking wheels abut against the wheel rim of the trolley plate and apply a thrust to the trolley plate toward the outer ring;

[0014] A flexible power mechanism is arranged on the frame, and the flexible power mechanism drives the trolley plate to perform circular motion on the frame.

[0015] Preferably, the pressureless rail ring type coal gangue decarbonization machine also includes a ventilation system, which includes multiple bellows groups and multiple hot air pipes. A bellows group is correspondingly arranged below a fan-shaped section, and a bellows group is arranged below the ignition burner. A bellows group includes at least one bellows. The seven fan-shaped sections and multiple bellows groups are all connected to external fans. A fan-shaped section is provided with at least one first pipe interface, and a bellows group is provided with at least one second pipe interface. According to process requirements, the first pipe interface and the second pipe interface, and different first pipe interfaces are connected with a hot air pipe. A heat exchanger and a third pipe interface are provided on the hot air pipe. The third pipe interface is connected to an external conveying pipe, and a double-layer ash unloading valve is provided below the bellows.

[0016] Preferably, the frame is provided with multiple layers of annular platforms along its vertical direction, and the multiple layers of annular platforms are used to arrange the furnace cover, the operation system, the laying device of the feeding area and the unloading device of the unloading area.

[0017] Preferably, the flipping control component includes multiple pairs of trolley wheels and two trolley rails, a pair of trolley wheels are symmetrically arranged on both sides of the downstream fan-shaped edge of a trolley frame, two trolley rails are arranged at the lower part of the multiple pairs of trolley wheels, the two trolley rails are fixed on an annular platform, and the parts of the two trolley rails located in the unloading area are provided with downward recessed parts, the trolley wheels descend in the recessed parts along with the two trolley rails, and the trolley frame loses balance and flips around the flipping axis.

[0018] Preferably, the intelligent hydraulic stop wheel is arranged on the inner ring of the trolley plate and is fixed to the frame. The intelligent hydraulic stop wheel includes a hydraulic cylinder, a stop wheel, a pressure sensor and a displacement sensor. The stop wheel is tangent to the rim of the trolley plate, and the stop wheel applies an outward thrust to the trolley plate.

[0019] Preferably, the flexible power mechanism includes a motor, a reducer and a pin-tooth flexible transmission assembly, the pin-tooth flexible transmission assembly includes a flexible transmission frame, a gear and a transmission pin, the flexible transmission frame is hinged to the frame, the motor, the reducer and the gear are all fixed to the flexible transmission frame, the output shaft of the motor is connected to the gear shaft of the gear, a ring-shaped vertical plate is provided on the rim of the trolley disc, two upper and lower ring plates are provided on the vertical plate, and a plurality of transmission pins are evenly provided between the two ring plates, the gear is engaged with the transmission pin, and the gear moves the transmission pin under the drive of the motor to drive the trolley disc to make a circular motion, a pair of fixed-distance wheels are provided on the top plate and the bottom plate of the flexible transmission frame, and the pair of fixed-distance wheels are tangent to the inside and outside of the vertical plate respectively.

[0020] Preferably, multiple bellows groups are arranged at the lower part of the trolley plate and are slidingly sealed with the lower bottom surface of the trolley plate, a concentric ring spring sliding plate sealing structure is arranged between the top surface of the multiple bellows groups and the lower bottom surface of the trolley plate, and a positive pressure sealing structure is arranged on the outer side of the concentric ring spring sliding plate sealing structure.

[0021] Preferably, a rod dropping positive pressure floating sealing structure is provided between the trolley baffle and the furnace hood.

[0022] Preferably, the feeding area is provided with a feeding combination system, and the feeding combination system includes a base material laying device, a reciprocating distributor, a wide belt conveyor, a roller distributor, a bulk material belt conveyor and an emergency feeding device arranged in sequence, the top of the base material laying device is a material bin, the bottom of the base material laying device is a fan-shaped regulating valve, and a plurality of ignition burners are provided, and the plurality of ignition burners are arranged downstream of the bulk material belt conveyor and below the roller distributor.

[0023] Preferably, the unloading area is provided with a dust removal hood, a unloading ore chute and a unloading area curve, the dust removal hood is provided above the trolley plate, the unloading ore chute is provided below the dust removal hood, and the unloading ore chute is provided with a unloading area curve.

[0024] The present invention has at least the following beneficial effects:

[0025] First, the pressureless rail ring type coal gangue decarbonizer of the present invention is a ring structure, and the frame is a ring-shaped main body support frame, which is connected end to end and has zero horizontal force, so it has strong horizontal bearing capacity and strong overall stability; the ring structure design of the decarbonizer can save more steel structures and equipment materials, and the total weight of the decarbonizer is 2 / 3 of the linear equipment with the same output; the investment cost is reduced by at least 10%; the length of the pressureless rail ring type coal gangue decarbonizer is 1 / 3 of the linear equipment; the number of trolley frames is 1 / 2 of the number of trolley frames on the linear equipment, and it is incomparable to the linear equipment in terms of cost and floor space. The trolley baffle and the furnace hood of the present invention are connected by a positive pressure sliding seal with good sealing, and the coal gangue clinker will not burst and pulverize.

[0026] Second, the flexible power mechanism and trolley disc of the present invention adopt a pin-tooth flexible transmission form, and the flexible transmission frame is hinged on the frame. During transmission, the entire flexible power mechanism floats with the trolley disc, realizing the fixed center distance transmission of the gears and the trolley disc, which is achieved through a mechanical structure. The two pairs of fixed-distance wheels have a limiting effect on the trolley disc. The entire annular device will not cause the gears and transmission pins to separate due to the eccentricity of the trolley disc. It can adapt to the thermal expansion and deformation of the trolley disc and the trolley frame, and ensure the smoothness of the transmission. The traditional annular device adjusts the center distance between the gear and the trolley disc through a hydraulic support positioning structure. The pin-tooth flexible transmission assembly of the present invention replaces the traditional hydraulic support positioning structure, which can save at least 100,000 yuan in hydraulic equipment costs.

[0027] Third, a refractory material layer is arranged on the inner side of the trolley baffle of the present invention. Compared with the heat-resistant steel structure on the inner side of the trolley baffle, the refractory material layer saves material costs and also saves the edge material paving device; since the trolley baffle does not flip over with the trolley frame during unloading, the trolley baffle moves in a circle with the trolley plate and the operation is relatively stable, the refractory material layer can be firmly fixed on the trolley baffle and is not easily damaged; at the same time, since the refractory material layer can be firmly fixed on the trolley baffle, the trolley baffle can be built very high to increase the height of the material layer, further improve the spatial structure of the equipment, and reduce the equipment's footprint.

[0028] Fourth, a concentric ring spring sliding plate sealing structure is arranged between the top surface of the multiple bellows groups and the lower bottom surface of the trolley plate, and a positive pressure sealing structure is arranged on the outside of the concentric ring spring sliding plate sealing structure. The concentric ring spring sliding plate sealing structure and the positive pressure sealing structure form a double sealing structure. Because the coal gangue decarbonization process requires that the fan pressure is greater than the pressure of the normal roasting process, the single-layer concentric ring spring sliding plate sealing structure cannot meet the need of small air leakage rate. The double sealing structure can minimize the air leakage rate.

[0029] Fifth, the trolley disc does not have a fixed rotation axis, so an intelligent hydraulic stop wheel is set on the inner ring of the trolley disc to ensure that the trolley disc rotates around the same center to prevent it from deviation; the intelligent hydraulic stop wheel is equipped with a pressure sensor and a displacement sensor. The hydraulic cylinder can adjust the thrust of the stop wheel on the trolley disc at any time according to the induction of the pressure sensor and the displacement sensor to ensure the centered rotation of the trolley disc.

[0030] The sixth and seventh process sections, the wind box group and the hot air ducts can freely adjust the hot air to adapt to various air distribution processes and meet the requirements of energy conservation and environmental protection. It also realizes the recycling and reuse of combustion heat.

[0031] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a top view of the pressureless rail ring type coal gangue decarbonization machine of the present invention;

[0033] Figure 2 A cross-sectional view of the frame, furnace cover, and operating system of the present invention;

[0034] Figure 3 is an enlarged view of the operating system of the present invention;

[0035] Figure 4 This is a cross-sectional view of the pressureless rail ring type coal gangue decarbonization machine of the present invention;

[0036] Figure 5 This is a structural diagram of the furnace cover, feeding area, unloading area, and ventilation system of the present invention;

[0037] Figure 6 This is an enlarged view of the rail-free unloading mechanism of part A of the present invention;

[0038] Figure 7 This is a schematic diagram of the pressure-free rail unloading mechanism of the present invention;

[0039] Figure 8 This is an enlarged view of the flexible power mechanism of part B of the present invention;

[0040] Figure 9 This is an enlarged view of the spacing wheel of part B of the present invention;

[0041] Figure 10 This is an enlarged view of the concentric ring spring sliding plate sealing structure of part C of the present invention;

[0042] Figure 11 This is an enlarged view of the positive pressure sealing structure of part C of the present invention;

[0043] Figure 12 This is an enlarged view of the D-section drop rod positive pressure floating seal structure described in the present invention.

[0044] Reference numerals:

[0045] Rack-100; annular platform-110; first-layer annular platform-111; second-layer annular platform-112;

[0046] Furnace cover - 200; drying section 1 - 210; drying section 2 - 220; preheating section - 230; roasting section - 240; cooling section 1 - 250; cooling section 2 - 260; cooling section 3 - 270; supplementary heat burner - 280; refractory brick partition - 290;

[0047] Operating system 300; trolley plate 310; trolley stop 311; rib 3111; shaft hole 312; trolley frame 320; grate module 321; railless unloading mechanism 330; tilting shaft 331; tilting control component 332; trolley wheel 3321; two trolley tracks 3322; recess 33221; wheel axle 3323; fixing seat 3324; intelligent Hydraulic brake wheel 340; flexible power mechanism 350; motor 351; reducer 352; pin-tooth flexible transmission assembly 353; flexible transmission frame 3531; gear 3532; transmission pin 3533; vertical plate 354; ring plate 355; spacer wheel 356; a pair of spacer wheels 3561 are provided on the top plate of the flexible transmission frame; a pair of spacer wheels 3562 are provided on the bottom surface of the flexible transmission frame;

[0048] Ventilation system-400; bellows assembly-410; double-layer ash discharge valve-411; hot air duct-420;

[0049] Feeding area - 500; base material laying device - 510; fan-shaped regulating valve - 511; reciprocating distributor - 520; wide belt conveyor - 530; roller distributor - 540; bulk material belt conveyor - 550; emergency feeding device - 560; ignition burner - 570;

[0050] Unloading area - 600; dust removal hood - 610; unloading chute - 620; unloading area bend - 630; dust removal duct - 640; maintenance area - 650;

[0051] Concentric ring spring slide seal structure 700; first spring 710; first steel plate 720; second steel plate 730; multiple bellows groups located on the side wall of the inner ring 740;

[0052] Positive pressure sealing structure-800; steel plate sealing piece-810; head end of steel plate sealing piece-811; tail end of steel plate sealing piece-812;

[0053] Drop rod positive pressure floating sealing structure-900; sealing steel plate-910; two drop rod floating steel plates-920; second spring-921; cavity-930. DETAILED DESCRIPTION

[0054] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0055] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0056] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0057] like Figure 1 、 2 As shown in , 3, and 5, the present invention provides a pressureless rail ring type coal gangue decarbonization machine, comprising:

[0058] Rack 100;

[0059] A furnace cover 200 is fixed to the frame 100. The furnace cover 200 forms a ring-like structure with the ends disconnected. The furnace cover 200 is divided into seven sector-shaped sections by a refractory brick partition wall 290. The seven sector-shaped sections are, in order, a drying section 1 210, a drying section 220, a preheating section 230, a roasting section 240, a cooling section 1 250, a cooling section 260, and a cooling section 3 270. The drying section 1 210 is adjacent to a feeding area 500, and the cooling section 3 270 is adjacent to a discharge area 600. The feeding area 500 is provided with an ignition burner 570. Supplementary heat burners 280 are provided on the sides of the sector-shaped sections corresponding to the preheating section 230 and the roasting section 240.

[0060] The operating system 300 is arranged below the furnace cover 200 and includes:

[0061] A trolley plate 310, which is annular and evenly divided into a plurality of sector-shaped hollow structures of equal size. Annular trolley baffles 311 are respectively provided on both sides of the inner and outer rings of the upper plane of the trolley plate 310. The top of the trolley baffles 311 is positively pressure-slidingly sealedly connected to the bottom of the furnace cover 200;

[0062] Multiple trolley frames 320, each trolley frame 320 is arranged in a fan-shaped hollow structure, a grate module 321 is provided on each trolley frame 320, and the trolley baffle 311 and the grate module 321 form an annular groove for placing materials;

[0063] The non-pressure rail unloading mechanism 330 includes a turning shaft 331 and a turning control component 332. The upstream sector edge on a bogie frame 320 is hinged to a sector hollow structure through a turning shaft 331, and a turning control component 332 is arranged on the downstream sector edge of a bogie frame 320. The turning control component 332 drives the downstream sector edge to descend, causing the bogie frame 320 to lose balance.

[0064] A plurality of intelligent hydraulic retaining wheels 340 are evenly arranged on the inner ring of the bogie disc 310. The intelligent hydraulic retaining wheels 340 abut against the rim of the bogie disc 310 and apply a thrust force towards the outer ring direction to the bogie disc 310.

[0065] The flexible power mechanism 350 is arranged on the frame 100, and the flexible power mechanism 350 drives the bogie disc 310 to perform a circular motion on the frame 100.

[0066] In the above technical solution, the frame 100 is a circular main body support frame, bearing the entire weight of the non-pressure rail ring-type coal gangue decarbonization machine. The furnace hood 200 is fixed on the frame 100. The furnace hood 200 is a quasi-circular structure with the head and tail disconnected. The cross-section of the furnace hood 200 is in the shape of "冂". The furnace hood 200 is separated into seven sector sections by a refractory brick partition wall 290. The seven sector sections are, in sequence, drying section 1 210, drying section 2 220, preheating section 230, roasting section 240, cooling section 1 250, cooling section 2 260, and cooling section 3 270. The part corresponding to the disconnected part between drying section 1 210 and cooling section 3 270 on the frame 100 is provided with a feeding area 500 and a discharging area 600. Drying section 1 210 is adjacent to the feeding area 500, that is, the feeding area 500 is arranged upstream of drying section 1 210. Cooling section 3 270 is adjacent to the discharging area 600, that is, the discharging area 600 is arranged downstream of cooling section 3 270. The feeding area 500 is provided with an ignition burner 570 for igniting the coal gangue material. Supplementary heating burners 280 are arranged on the sides of the sector sections corresponding to the preheating section 230 and the roasting section 240. Since roasting coal gangue is an exothermic reaction, the supplementary heating burners 280 are used to supplement the dissipated heat.

[0067] The operating system 300 is a circular structure arranged below the furnace hood 200. The operating system 300 includes a bogie disc 310, a plurality of bogie frames 320, a non-pressure rail unloading mechanism 330, a plurality of intelligent hydraulic retaining wheels 340, and a flexible power mechanism 350. The flexible power mechanism 350 drives the bogie disc 310 to rotate. The bogie disc 310 is provided with bogie frames 320, and the bogie disc 310 drives the bogie frames 320 to rotate around the center of the bogie disc 310 itself.

[0068] The connection between the trolley plate 310 and the trolley frame 320 is as follows: the trolley plate 310 is an annular frame structure with a certain thickness. The trolley plate 310 is evenly divided into multiple fan-shaped hollow structures of equal size. A trolley frame 320 is placed in each fan-shaped hollow structure. The trolley frame 320 is a fan-shaped frame. The fan-shaped grate module 321 is installed on the upper surface of the trolley frame 320 and in the middle area of ​​the fan-shaped frame. Each grate module 321 is independently installed on each trolley frame 320. The grate module 321 is used to carry coal gangue materials, and the gaps in the grate module 321 allow ventilation. Annular trolley baffles 311 are respectively set on both sides of the inner and outer rings of the upper surface of the trolley plate 310. The grate module 321 and the two trolley baffles 311 form an annular groove for accommodating coal gangue materials. The annular groove allows the coal gangue materials to be accumulated to a certain thickness. The furnace hood 200 is buckled onto the trolley baffle 311. A positive pressure sealing structure is provided between the upper plane of the outer rib 3111 of the trolley baffle 311 and the furnace hood 200 to prevent the hot air inside the furnace hood 200 from escaping. Because the specific gravity of coal gangue is relatively light, the trolley baffle 311 is set at a certain height. Because coal gangue will spontaneously combust during the decarbonization process, a refractory material layer is provided on the inside of the trolley baffle 311 to protect the trolley baffle 311. The refractory material layer is composed of an insulation board, a lightweight material, and a heavy material from the outside to the inside. The insulation board is a thin and light insulating material, such as ceramic fiber. The lightweight material is a lightweight cooling material, such as a refractory brick with a low aluminum oxide content. The heavy material is a cooling and wear-resistant material, such as a refractory brick with a high aluminum oxide content. The trolley plate 310 rotates, and the trolley plate 310 drives the trolley frame 320, the grate module 321 and the coal gangue material to rotate, so that the coal gangue material passes through seven fan-shaped sections in sequence.

[0069] The trolley frame 320 can be flipped so that the gangue material on the grate module 321 can be unloaded in the unloading area 600. The flipping action of the trolley frame 320 is achieved by the pressureless unloading mechanism 330. The pressureless unloading mechanism 330 includes a flip shaft 331 and a flip control component 332. The upstream fan-shaped edge of one trolley frame 320 is hinged to the fan-shaped hollow structure via the flip shaft 331, and the downstream fan-shaped edge of one trolley frame 320 is provided with a flip control component 332. When the trolley plate 310 rotates to the unloading area 600, the flip control component 332 controls the downstream fan-shaped edge of the trolley frame 320 to descend, causing the trolley frame 320 to lose balance. Due to the effects of gravity and eccentricity, the trolley frame 320, the grate module 321, and the gangue material flip around the flip shaft 331, and the gangue material slides off the grate module 321. The flexible power mechanism 350 is mounted on the frame 100 and drives the trolley plate 310 to perform circular motion on the frame 100. Because the trolley plate 310 does not have a fixed rotation axis, it will float horizontally during rotation. The intelligent hydraulic stopper 340 applies a thrust toward the outer ring of the trolley plate 310, ensuring that the trolley plate 310 rotates around the same center and preventing it from deviating.

[0070] The beneficial effects of the ring-shaped main structure design of the present invention are as follows: since the pressureless rail ring type coal gangue decarbonization machine of the present invention is a ring structure, the frame 100 is a ring-shaped main support frame, which is connected end to end and has zero horizontal force, so the horizontal bearing capacity is strong and the overall stability is strong; the ring structure design of the decarbonization machine can save more steel structures and equipment materials, and the total weight of the decarbonization machine is 2 / 3 of the linear equipment with the same output; the investment cost is reduced by at least 10%; the length of the pressureless rail ring type coal gangue decarbonization machine is 1 / 3 of the linear equipment; the number of trolley frames 320 is 1 / 2 of the number of trolley frames 320 on the linear equipment, and both the cost and the floor space are incomparable to the linear equipment.

[0071] The beneficial effects of setting a refractory material layer on the inner side of the trolley baffle 311 are as follows: a steel structure is set on the inner side of the traditional trolley baffle 311. In order to protect the steel structure, a paving device is set between the gangue material and the steel structure. A layer of clinker is laid in the paving device, and the clinker separates the inner steel structure from the burning gangue material. A refractory material layer is set on the inner side of the trolley baffle 311. Compared with steel materials, the refractory material layer saves material costs and saves the paving device. Since the trolley baffle 311 does not flip with the trolley frame 320 during unloading, the trolley baffle 311 moves in a circle with the trolley plate 310, and the operation is relatively stable, so the refractory material layer can be firmly fixed on the trolley baffle 311 and is not easily damaged. At the same time, since the refractory material layer can be firmly fixed on the trolley baffle 311, the trolley baffle 311 can be built very high to increase the height of the material layer, further saving the floor space of the equipment.

[0072] The working principle of the pressureless rail ring type coal gangue decarbonizer: the laying device of the feeding area 500 lays the coal gangue material on the grate module 321, the coal gangue material is ignited and burned by the ignition burner 570, and the flexible power mechanism 350 drives the trolley plate 310 to rotate. Since the furnace cover 200 is fixed on the frame 100, the rotation of the trolley plate 310 drives the burning coal gangue material to enter the drying stage 210, the drying stage 220, the preheating stage 230, the roasting stage 240, the cooling stage 250, the cooling stage 260, and the cooling stage 3 270 in sequence. During the burning section 240, the supplementary heat burners 280 arranged in the preheating section 230 and the roasting section 240 supplement the heat to the burning coal gangue materials. When the coal gangue materials are transferred out of the cooling section 3 270 and enter the unloading area 600, the flip control component 332 controls the fan-shaped edge located downstream on the console frame 320 to descend, and the trolley frame 320 loses balance. Due to the effects of gravity and eccentricity, the trolley frame 320, the grate module 321 and the coal gangue materials flip around the flip axis 331, and the coal gangue materials slide from the grate module 321 and enter the clinker receiving device through the unloading port of the unloading area 600.

[0073] In another technical solution, Figure 5As shown, it also includes a ventilation system 400, which includes multiple bellows groups 410 and multiple hot air ducts 420. A bellows group 410 is correspondingly arranged below a fan-shaped section, and a bellows group 410 is arranged below the ignition burner 570. A bellows group 410 includes at least one bellows. The seven fan-shaped sections and multiple bellows groups 410 are all externally connected to fans. A fan-shaped section is provided with at least one first pipe interface, and a bellows group 410 is provided with at least one second pipe interface. According to process requirements, the first pipe interface and the second pipe interface, and different first pipe interfaces are connected by a hot air duct 420. A heat exchanger and a third pipe interface are provided on the hot air duct 420. The third pipe interface is connected to the external conveying pipe, and a double-layer ash unloading valve 411 is provided below the bellows.

[0074] The arrangement of the plurality of bellows groups 410 is as follows: a bellows group 410 is arranged at the lower part of the trolley disc 310 corresponding to each sector, a bellows group 410 is arranged at the lower part of the trolley disc 310 corresponding to the ignition burner 570, and the plurality of bellows groups 410 are sequentially connected to form a ring-like structure, each bellows group 410 is fixed to the frame 100, and a sliding sealing structure is arranged between the top of each bellows group 410 and the bottom of the trolley disc 310, so that when the trolley disc 310 rotates, the trolley disc 310 and the bellows group 410 are sealed to prevent air leakage from the bellows group 410. The plurality of bellows groups 410 are all externally connected to a fan so that each bellows group 410 can blow hot air or cold air from bottom to top into its corresponding sector, and the bellows group 410 can also draw out the air in its corresponding sector. The seven fan-shaped sections are all connected to external fans so that each fan-shaped section can blow hot air or cold air from top to bottom to the corresponding coal gangue material.

[0075] The purpose of the hot air duct 420 is to provide at least one first duct interface for each sector, and at least one second duct interface for each bellows assembly 410. The first and second duct interfaces are connected by the hot air duct 420, and different first duct interfaces are connected by the hot air duct 420. The hot air duct 420 is also provided with a heat exchanger and a third duct interface. Excess heat within the sector is drawn out through the hot air duct 420, where the heat exchanger heats or cools the hot air before transporting it to another sector or bellows assembly 410. The degree to which the heat exchanger heats or cools the hot air depends on the process requirements of the receiving sector or bellows assembly 410. The hot air duct 420 can also transport the hot air to an external transport pipeline via the third duct interface, using the excess heat generated by combustion to generate electricity. For example, when the heat in the drying section 210 is high and the heat in the preheating section 230 is low, the hot air in the drying section 210 can be drawn out through the hot air duct 420. Depending on the process requirements of the preheating section 230, the heat exchanger heats or cools the hot air before transporting the treated hot air to the preheating section 230. The hot air duct 420 can also transport the hot air in the drying section 210 to an external transport duct for waste heat power generation. For example, when the heat in the drying section 210 is high and the heat in the bellows group 410 corresponding to the preheating section 230 is low, the hot air in the drying section 210 can be drawn out through the hot air duct 420 and transported to the bellows group 410 corresponding to the preheating section 230. The heating or cooling of the hot air by the heat exchanger is determined by the process requirements of the bellows group 410 corresponding to the preheating section 230. The provision of the hot air duct 420 enables heat recycling and reuse. The coal gangue materials in the seven fan-shaped sections are blown from bottom to top, from top to bottom, hot or cold, and the setting of the hot air ducts 420 between the seven fan-shaped sections and the seven fan-shaped sections, and the setting of the hot air ducts 420 between the seven fan-shaped sections and the seven fan-shaped sections corresponding to the seven fan-shaped sections are all determined by the production process. A small amount of cross-flow will be generated between different wind box groups 410, which has no effect on the process. Since there is enough space under the bellows, the bellows can be made into a right pyramid structure. Compared with the traditional bellows with a skewed cone structure, it can avoid the problem of uneven heat distribution on the material surface caused by the skewed cone structure. A double-layer ash discharge valve 411 is provided under each bellows to collect dust and lock the wind.

[0076] In another technical solution, Figure 4As shown, the frame 100 is vertically provided with multiple layers of annular platforms 110. The multiple layers of annular platforms 110 are used to house the furnace cover 200, the operating system 300, the material laying device of the feeding area 500, and the unloading device of the unloading area 600. The frame 100 can be provided with multiple layers of annular platforms 110 according to the needs of operation and maintenance. For example, the operating system 300 is arranged on the first layer of annular platforms 111 from bottom to top, and the material laying device of the feeding area 500, the unloading device of the unloading area 600, and the furnace cover 200 are arranged on the second layer of annular platforms 112 from bottom to top.

[0077] In another technical solution, Figure 3 、 6 As shown in Figure 7, the flip control component 332 includes multiple pairs of trolley wheels 3321 and two trolley rails 3322. A pair of trolley wheels 3321 are symmetrically arranged on both sides of the downstream fan-shaped edge of a trolley frame 320. Two trolley rails 3322 are arranged at the lower part of the multiple pairs of trolley wheels 3321. The two trolley rails 3322 are fixed on an annular platform 110. The two trolley rails 3322 are located in the unloading area 600. A downward recessed portion 33221 is provided. The trolley wheels 3321 descend in the recessed portion 33221 along with the two trolley rails 3322, and the trolley frame 320 loses balance and flips around the flip axis 331.

[0078] The railless unloading mechanism 330 controls the flipping of the trolley frame 320, causing the trolley frame 320 to flip and unload in the unloading area 600. The connection between the railless unloading mechanism 330 and the trolley frame 320 is as follows: the railless unloading mechanism 330 includes a flip shaft 331 and a flip control component 332. The flip control component 332 includes multiple pairs of trolley wheels 3321 and two trolley rails 3322. Each trolley frame 320 is provided with one flip shaft 331 and one pair of trolley wheels 3321. A trolley frame 320 is set in a fan-shaped hollow structure, a flip shaft 331 is set on the upstream fan-shaped edge of the trolley frame 320, and a flip shaft 331 is inserted into the shaft hole 312 of the trolley plate 310. A wheel shaft 3323 is set on the downstream fan-shaped edge of the trolley frame 320. A pair of trolley wheels 3321 are set at both ends of the wheel shaft 3323. Multiple pairs of trolley wheels 3321 form a ring. Two trolley tracks 3322 are set at the lower part of the multiple pairs of trolley wheels 3321. The two trolley tracks 3322 are fixed on the first layer of the annular platform 111 from bottom to top through a fixing seat 3324. The two trolley tracks 3322 are both annular Tracks, multiple pairs of trolley wheels 3321 run on two trolley tracks 3322, and the two trolley tracks 3322 are located in the unloading area 600. Two downward, symmetrical recessed portions 33221 are set. When a pair of trolley wheels 3321 runs to the two recessed portions 33221, a pair of trolley wheels 3321 descends along with the two trolley tracks 3322, and the trolley frame 320 loses balance. Due to the effects of gravity and eccentricity, the trolley frame 320, the grate module 321 and the coal gangue material flip around the flip axis 331, and the coal gangue material on the trolley frame 320 slides down and enters the clinker receiving device from the unloading port of the unloading area 600.

[0079] In another technical solution, Figure 2As shown, the intelligent hydraulic stop wheel 340 is arranged on the inner ring of the trolley disc 310 and is fixedly connected to the frame 100. The intelligent hydraulic stop wheel 340 includes a hydraulic cylinder, a stop wheel, a pressure sensor and a displacement sensor. The stop wheel is tangent to the rim of the trolley disc 310, and the stop wheel applies an outward thrust to the trolley disc 310. Since the trolley disc 310 does not have a fixed rotation axis, multiple intelligent hydraulic stop wheels 340 are set on the inner ring of the trolley disc 310. The intelligent hydraulic stop wheel 340 ensures that the trolley disc 310 rotates around the same center to prevent the trolley disc 310 from deviating. An intelligent hydraulic stop wheel 340 includes a hydraulic cylinder, a stop wheel, a pressure sensor and a displacement sensor. The intelligent hydraulic stop wheel 340 is fixedly connected to the frame 100 through the hydraulic cylinder. The stop wheel is tangent to the rim of the trolley disc 310. The hydraulic cylinder can adjust the thrust of the stop wheel on the trolley disc 310 according to the sensing of the pressure sensor and the displacement sensor to ensure that the trolley disc 310 rotates in a centered manner. Compared with the traditional hydraulic stop wheel 340 , the intelligent hydraulic stop wheel 340 of the present invention is additionally provided with a pressure sensor and a displacement sensor, so as to realize automatic centering of the trolley plate 310 , save manpower, and improve the operation stability of the trolley plate 310 .

[0080] In another technical solution, Figure 3 、 8 As shown in Figure 9, the flexible power mechanism 350 includes a motor 351, a reducer 352 and a pin-tooth flexible transmission assembly 353. The pin-tooth flexible transmission assembly 353 includes a flexible transmission frame 3531, a gear 3532 and a transmission pin 3533. The flexible transmission frame 3531 is hinged to the frame 100. The motor 351, the reducer 352 and the gear 3532 are all fixed to the flexible transmission frame 3531. The output shaft of the motor 351 is connected to the gear shaft of the gear 3532. The wheel of the trolley disc 310 A ring-shaped vertical plate 354 is set on the edge, and two upper and lower ring plates 355 are set on the vertical plate 354. A plurality of transmission pins 3533 are evenly arranged between the two ring plates 355. The gear 3532 is engaged with the transmission pin 3533. The gear 3532 moves the transmission pin 3533 under the drive of the motor 351 to drive the trolley plate 310 to move in a ring. A pair of fixed-distance wheels 356 are set on the top plate and the bottom plate of the flexible transmission frame 3531, and the pair of fixed-distance wheels 356 are tangent to the inside and outside of the vertical plate 354 respectively.

[0081] The vertical plate 354 is an annular structure and is arranged on the rim of the trolley plate 310. Two upper and lower ring plates 355 are arranged on the vertical plate 354. Multiple transmission pins 3533 are evenly arranged between the two ring plates 355. The gears 3532 and the transmission pins 3533 are engaged. The motor 351 drives the gears 3532 to rotate, and the gears 3532 move the transmission pins 3533, thereby driving the trolley plate 310 to move in an annular motion. The flexible transmission frame 3531 is hinged to the frame 100. During transmission, the entire flexible power mechanism 350 floats with the trolley plate 310, realizing the fixed center distance transmission between the gears 3532 and the trolley plate 310. This is achieved through a mechanical structure. A pair of spacer wheels 3561 is mounted on the top plate of the flexible transmission frame 3531, and a pair of spacer wheels 3562 is mounted on the bottom surface of the flexible transmission frame 3531. The top and bottom of the vertical plate 354 extend between the two pairs of spacer wheels 356. The two pairs of spacer wheels 356 are tangential to the inner and outer edges of the vertical plate 354, respectively. Thus, the two pairs of spacer wheels 356 restrain the trolley plate 310. The two pairs of spacer wheels 356 ensure that the entire ring-shaped machine will not separate due to eccentricity of the trolley plate 310, and can accommodate thermal expansion and deformation of the trolley plate 310 and trolley frame 320, ensuring smooth transmission. Conventional ring-shaped machines use hydraulic support and positioning structures to ensure that the center distance does not deviate. The pin-tooth flexible transmission assembly 353 of the present invention replaces this traditional hydraulic support and positioning structure, saving at least 100,000 yuan in hydraulic equipment costs.

[0082] In another technical solution, Figure 2 、 10 As shown in Figures 11, multiple bellows groups 410 are arranged at the lower part of the trolley plate 310 and are slidingly sealed with the lower bottom surface of the trolley plate 310. A concentric ring spring sliding plate sealing structure 700 is arranged between the top surface of the multiple bellows groups 410 and the lower bottom surface of the trolley plate 310, and a positive pressure sealing structure 800 is arranged on the outer side of the concentric ring spring sliding plate sealing structure 700.

[0083] A plurality of bellows groups 410 are located between the top surface of the side wall 740 of the inner ring and the lower bottom surface of the trolley plate 310, and a group of concentric ring spring sliding plate sealing structures 700 are set. A plurality of bellows groups 410 are located between the top surface of the side wall of the outer ring and the lower bottom surface of the trolley plate 310, and a group of concentric ring spring sliding plate sealing structures 700 are set. A concentric ring spring slide seal structure 700 includes a first spring 710, a first steel plate 720, and a second steel plate 730. Each of the first spring 710, the first steel plate 720, and the second steel plate 730 is annular. The top of the first spring 710 is fixed to the bottom surface of the trolley plate 310, the bottom of the first spring 710 is fixed to the first steel plate 720, and the second steel plate 730 is fixed to the top of the bellows. The first spring 710 and the first steel plate 720 rotate with the trolley plate 310. The elastic force generated by the first spring 710 compresses the first and second steel plates 720, 730, forming a sliding seal between the first and second steel plates 720, 730. Positive pressure seal structures 800 are provided on the outer sides of the two concentric ring spring slide seal structures 700. The positive pressure sealing structure 800 includes a bent steel plate sealing piece 810. The leading end 811 of the steel plate sealing piece 810 is in contact with and fixed to the outer wall of the bellows, and the trailing end 812 of the steel plate sealing piece 810 is in contact with the bottom surface of the trolley plate 310. When the bellows is performing negative pressure suction, the interior of the bellows is at negative pressure, while the exterior of the steel plate sealing piece 810 is at positive pressure. The leading end 811 of the steel plate sealing piece 810 is tightly pressed against the outer wall of the bellows, and the trailing end is tightly pressed against the bottom surface of the trolley plate 310. Because the gangue decarbonization process requires a higher fan pressure than the normal roasting process, the single-layer concentric ring spring sliding plate sealing structure 700 cannot meet the requirements for a low air leakage rate. A double sealing structure can minimize the air leakage rate.

[0084] In another technical solution, Figure 2 、 12 As shown, a rod dropping positive pressure floating sealing structure 900 is provided between the trolley baffle 311 and the furnace cover 200 . The rod-dropping positive pressure floating sealing structure 900 includes a sealing steel plate 910 and two rod-dropping floating steel plates 920. The top of the sealing steel plate 910 is fitted and fixed to the frame 100. The interior of the sealing steel plate 910 contains a cavity 930. Two rod-dropping floating steel plates 920 are arranged in the cavity 930. The bottoms of the two rod-dropping floating steel plates 920 fall on the upper plane of the ribs 3111 on the side of the trolley baffle 311. A second spring 921 is arranged between the two rod-dropping floating steel plates 920. Under the elastic force of the second spring 921, the two rod-dropping floating steel plates 920 are respectively pressed against the sealing steel plate 910 and the trolley baffle 311. The two rod-dropping floating steel plates 920 can float up and down in the cavity 930. During the floating process, they maintain a pressed state with the sealing steel plate 910 and the trolley baffle 311 to prevent hot air from overflowing from the furnace hood 200.

[0085] In another technical solution, Figure 1 、 5 As shown, the feeding area 500 is provided with a feeding combination system, and the feeding combination system includes a base material laying device 510, a reciprocating distributor 520, a wide belt conveyor 530, a roller distributor 540, a bulk material belt conveyor 550 and an emergency feeding device 560 which are arranged in sequence. The top of the base material laying device 510 is a material bin, and the bottom of the base material laying device 510 is a fan-shaped regulating valve 511. A plurality of ignition burners 570 are provided, and the plurality of ignition burners 570 are arranged downstream of the bulk material belt conveyor 550 and below the roller distributor 540.

[0086] The base material laying device 510 has a hopper above and a fan-shaped regulating valve 511 below, which automatically adjusts the thickness of the base material according to process requirements. The base material is decarbonized coal gangue, also known as clinker. Undecarbonized coal gangue is called raw meal. A layer of base material is first laid on the grate module 321, and then the raw meal is laid on top of the base material to prevent the raw meal from burning too hot and damaging the grate module 321 and the trolley frame 320. If the raw meal laying equipment malfunctions and you don't want to stop the machine, you can open the fan-shaped regulating valve 511 to its maximum and lay a certain thickness of clinker on the grate module 321 to replace the raw meal. This prevents damage to the grate module 321 and the trolley frame 320 due to a lack of material or too little material on the grate module 321. Downstream of the base material laying device 510, a reciprocating distributor 520, a wide belt conveyor 530, and a roller distributor 540 are sequentially arranged. The wide belt conveyor 530 is arranged below the reciprocating distributor 520. The reciprocating distributor 520 evenly arranges the raw material on the wide belt conveyor 530. The wide belt conveyor 530 sends the raw material to the roller distributor 540. The roller distributor 540 plays the role of flattening the raw material, and the raw material is flattened and rolls onto the base material of the grate module 321; the roller distributor 540 also has the function of separating powder. A bulk material belt conveyor 550 is arranged below the roller distributor 540. The powder sieved by the roller distributor 540 falls on the bulk material belt conveyor 550. The bulk material belt conveyor 550 is connected to the raw material area through a belt, and the bulk material belt conveyor 550 returns the powder to the raw material area. A row of vertically downward-facing ignition burners 570 is located below the roller distributor 540 and behind the bulk material conveyor 550. An emergency feeder 560 is located between the feed opening of the roller distributor 540 and the first drying stage 210. The emergency feeder 560 contains clinker to fill the space left on the trolley 320 of the feeding area 500 when the raw material supply is interrupted.

[0087] In another technical solution, Figure 1 、 5 As shown, the unloading area 600 is provided with a dust removal cover 610, a unloading ore chute 620 and an unloading area curve 630. The dust removal cover 610 is provided above the trolley plate 310, and the unloading ore chute 620 is provided below the dust removal cover 610. The unloading ore chute 620 is provided with a unloading area curve 630.

[0088] Downstream of the third cooling section 270 is the unloading area 600, which is provided with a dust removal hood 610, a unloading ore chute 620 and a unloading area bend 630. The dust removal hood 610 is arranged above the trolley plate 310, and a rod dropping positive pressure floating sealing structure 900 is arranged between the dust removal hood 610 and the trolley plate 310. A dust removal duct 640 is provided on the dust removal hood 610, and the dust removal duct 640 discharges the smoke and dust from the unloading area 600. Below the dust removal hood 610 is the unloading ore chute 620, and the unloading area bend 630 is arranged on the unloading ore chute 620. A valve is provided in the unloading ore chute 620, and the lower part of the unloading ore chute 620 is a finished product belt for receiving clinker. During unloading, when a pair of trolley wheels 3321 run to the two recessed parts 33221 of the two trolley tracks 3322, the pair of trolley wheels 3321 descend along with the track, and the trolley frame 320 loses balance. Due to the effects of gravity and eccentricity, the trolley frame 320, the grate module 321 and the gangue material, the trolley frame 320 flips around the flip axis 331, and the gangue material on the trolley frame 320 slides to the unloading chute 620. The bend 630 in the unloading area plays a certain blocking role on the sliding gangue material, preventing the material from scattering everywhere during unloading. At this time, the material is in a completely red-hot state, also called "red material". The valve controls the discharge amount of the material in the unloading chute 620, maintains the material surface height in the unloading chute 620, and prevents the "red material" from overheating and damaging the finished product belt that receives the clinker. A maintenance area 650 is set downstream of the unloading area 600. The maintenance area 650 is provided with an exit for replacing the grate module 321. Each grate module 321 is independently placed on the trolley frame 320 and can be taken out from the maintenance area 650 at any time. Replacement is very convenient and does not affect the normal production of the equipment.

[0089] The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applications, modifications, and variations of the present invention will be readily apparent to those skilled in the art.

[0090] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. The pressureless rail ring type coal gangue decarbonization machine is characterized by: include: frame; a furnace cover fixed to the frame, the furnace cover forming a ring-like structure with ends disconnected, the furnace cover being divided into seven sector-shaped sections by refractory brick partition walls, the seven sector-shaped sections being drying section 1, drying section 2, preheating section, roasting section, cooling section 1, cooling section 2, and cooling section 3, the drying section 1 being adjacent to a feeding area, the cooling section 3 being adjacent to a discharging area, the feeding area being provided with an ignition burner, and supplementary heat burners being provided on the sides of the sector-shaped sections corresponding to the preheating section and roasting section; An operating system is provided below the furnace cover and comprises: A trolley plate, which is annular and evenly divided into a plurality of sector-shaped hollow structures of equal size. Annular trolley baffles are respectively provided on both sides of the inner and outer rings of the upper plane of the trolley plate. The top of the trolley baffle is positively pressure-slidingly sealedly connected to the bottom of the furnace cover; Multiple trolley frames, one trolley frame is arranged in a fan-shaped hollow structure, one trolley frame is provided with a grate module, and the trolley baffle and the grate module form an annular groove for placing materials; The railless unloading mechanism includes a turning shaft and a turning control component. The upstream sector edge of a trolley frame is hinged to the sector hollow structure via a turning shaft. The downstream sector edge of a trolley frame is provided with a turning control component. The turning control component drives the downstream sector edge to descend, causing the trolley frame to lose balance. A plurality of intelligent hydraulic blocking wheels are evenly arranged on the inner ring of the trolley plate, the intelligent hydraulic blocking wheels abut against the wheel rim of the trolley plate and apply a thrust to the trolley plate toward the outer ring; A flexible power mechanism is provided on the frame, and drives the trolley plate to perform circular motion on the frame; The flip control component includes multiple pairs of trolley wheels and two trolley rails. A pair of trolley wheels are symmetrically arranged on both sides of the downstream fan-shaped edge of a trolley frame. Two trolley rails are arranged at the lower part of the multiple pairs of trolley wheels. The two trolley rails are fixed on an annular platform. The parts of the two trolley rails located in the unloading area are provided with downward recessed parts. The trolley wheels fall in the recessed parts along with the two trolley rails, and the trolley frame loses balance and flips around the flip axis. The flexible power mechanism includes a motor, a reducer and a pin-tooth flexible transmission assembly, and the pin-tooth flexible transmission assembly includes a flexible transmission frame, a gear and a transmission pin. The flexible transmission frame is hinged to the frame, and the motor, reducer and gear are all fixed to the flexible transmission frame. The output shaft of the motor is connected to the gear shaft of the gear. A ring-shaped vertical plate is provided on the rim of the trolley disc, and two upper and lower ring plates are provided on the vertical plate. A plurality of transmission pins are evenly provided between the two ring plates. The gear is engaged with the transmission pin, and the gear moves the transmission pin under the drive of the motor to drive the trolley disc to perform circular motion. A pair of fixed-distance wheels are provided on the top plate and the bottom plate of the flexible transmission frame, and the pair of fixed-distance wheels are tangent to the inside and outside of the vertical plate respectively.

2. The pressureless rail ring type coal gangue decarbonization machine according to claim 1 is characterized in that: It also includes a ventilation system, which includes multiple bellows groups and multiple hot air ducts. A bellows group is correspondingly arranged below a fan-shaped section, and a bellows group is arranged below the ignition burner. A bellows group includes at least one bellows. The seven fan-shaped sections and multiple bellows groups are all connected to external fans. A fan-shaped section is provided with at least one first pipe interface, and a bellows group is provided with at least one second pipe interface. According to process requirements, the first pipe interface and the second pipe interface, and different first pipe interfaces are connected by hot air pipes. A heat exchanger and a third pipe interface are provided on the hot air pipe. The third pipe interface is connected to the external conveying pipe, and a double-layer ash unloading valve is provided under the bellows.

3. The pressureless rail ring type coal gangue decarbonization machine according to claim 2, characterized in that: The frame is provided with multi-layer annular platforms along its vertical direction, and the multi-layer annular platforms are used for arranging the furnace cover, the operation system, the laying device of the feeding area and the unloading device of the unloading area.

4. The pressureless rail ring type coal gangue decarbonization machine according to claim 1, characterized in that: The intelligent hydraulic blocking wheel is arranged on the inner ring of the trolley plate and is fixed to the frame. The intelligent hydraulic blocking wheel includes a hydraulic cylinder, a blocking wheel, a pressure sensor and a displacement sensor. The blocking wheel is tangent to the rim of the trolley plate, and the blocking wheel applies an outward thrust to the trolley plate.

5. The pressureless rail ring type coal gangue decarbonization machine according to claim 2, characterized in that: Multiple bellows groups are arranged at the lower part of the trolley plate and are slidingly sealed with the lower bottom surface of the trolley plate. A concentric ring spring sliding plate sealing structure is arranged between the top surface of the multiple bellows groups and the lower bottom surface of the trolley plate, and a positive pressure sealing structure is arranged on the outer side of the concentric ring spring sliding plate sealing structure.

6. The pressureless rail ring type coal gangue decarbonization machine according to claim 1, characterized in that: A rod dropping positive pressure floating sealing structure is provided between the trolley baffle and the furnace cover.

7. The pressureless rail ring type gangue decarbonization machine according to claim 1, characterized in that: The feeding area is provided with a feeding combination system, and the feeding combination system includes a base material laying device, a reciprocating distributor, a wide belt conveyor, a roller distributor, a bulk material belt conveyor and an emergency feeding device arranged in sequence. The top of the base material laying device is a material bin, and the bottom of the base material laying device is a fan-shaped regulating valve. There are multiple ignition burners, and the multiple ignition burners are arranged downstream of the bulk material belt conveyor and below the roller distributor.

8. The pressureless rail ring type gangue decarbonization machine according to claim 7, characterized in that: The unloading area is provided with a dust removal hood, a unloading ore chute and a unloading area bend. The dust removal hood is provided above the trolley plate, the unloading ore chute is provided below the dust removal hood, and the unloading ore chute is provided with a unloading area bend.

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