A circulating fluidized bed refuse incineration boiler

Abstract

The application discloses a circulating fluidized bed garbage incineration boiler, which comprises an incineration furnace body, a circulating flow device and a sieve plate, the circulating flow device comprises a mounting seat, a first lifting cylinder, a second lifting cylinder and a motor, the motor is provided with a vertically downward output shaft, the output shaft is fixedly connected with a lifting blade, the upper portion of the second lifting cylinder is fixedly connected with a combustion seat, and the sieve plate is provided with a sieve screen, the application has the beneficial effects that the motor drives the lifting blade to rotate, so that the garbage is transported from bottom to top, the garbage is combusted on the combustion seat, the garbage which is not fully combusted slides down from the combustion seat, so that the garbage is in the circulating flow in the incineration, the garbage can be fully combusted, the garbage in combustion falls on the sieve plate, and the sieve plate is vibrated and screened through the sieve screen, so that the ash generated in combustion is vibrated and fallen, the blocking ring can realize intermittent feeding, the ash cleaning in combustion and the addition of new material are simultaneously realized, and the incineration work can be continuously carried out.

Description

Technical Field

[0001] This invention relates to the field of waste incineration technology, specifically to a circulating fluidized bed waste incineration boiler. Background Technology

[0002] With the acceleration of urbanization, cities are generating more and more waste, making urban waste management increasingly important. Traditional landfilling methods deplete land resources, while waste incineration is currently the best way to reduce, render harmless, and recycle waste.

[0003] Waste incineration is generally carried out in boilers, but traditional boilers have the following disadvantages when incinerating waste:

[0004] 1. Firstly, burning garbage in a boiler will result in incomplete combustion, which will produce more toxic gases such as carbon monoxide and will also prevent the energy in the garbage from being fully utilized.

[0005] 2. During waste incineration, manual feeding and removal of ash are required, making the operation relatively complicated. Summary of the Invention

[0006] To address the above problems, the present invention provides a circulating fluidized bed waste incineration boiler.

[0007] This invention is achieved through the following technical solution:

[0008] A circulating fluidized bed waste incineration boiler, comprising:

[0009] The incinerator body has a bowl-shaped ash hopper fixed to its bottom, an ash discharge pipe fixed to its bottom, and a feeding pipe fixed to the left side of the top plate of the incinerator body.

[0010] A circulating flow device includes a mounting base, a first lifting cylinder, a second lifting cylinder, and a motor. The mounting base is fixed to the lower part of the inner cavity of the incinerator body by evenly arranged circumferential support rods. The first lifting cylinder is fixed to the center of the upper surface of the mounting base. A connecting rod is evenly fixed to the top of the first lifting cylinder. The second lifting cylinder is fixed to the top of the connecting rod. An annular combustion seat is fixed to the upper part of the outer wall of the second lifting cylinder. A machine cover is fixed to the top plate of the incinerator body. The motor is fixed inside the machine cover. The motor has a vertically downward output shaft. The output shaft is rotatably connected to the top plate of the incinerator body. The axis of the output shaft coincides with the axis of the first lifting cylinder. Spiral lifting blades are fixed to the output shaft.

[0011] The screen plate is annular, and a sleeve is fixedly connected to the lower surface of the screen plate. The sleeve is fitted outside the first lifting cylinder. The outer ring of the screen is slidably and sealed in the incinerator body. Screen mesh is uniformly fixed to the circumference of the screen plate.

[0012] Furthermore, the upper surface of the combustion seat is inclined downward in the direction away from the second lifting cylinder, and the upper surface of the sieve plate is inclined downward in the direction pointing towards the center of the incinerator body.

[0013] Furthermore, a storage cylinder is fixedly connected to the top of the feeding pipe, and an end cap is provided on the top of the storage cylinder. A bearing sleeve is fixedly connected to the lower surface of the incinerator body. A sealing ring is rotatably connected inside the bearing sleeve. A through groove corresponding to the feeding pipe is opened on the sealing ring. A toothed ring is fixedly connected to the inner ring of the sealing ring. A gear is fixedly connected to the output shaft. The gear and the toothed ring mesh with each other.

[0014] Furthermore, the sleeve is slidably connected to the first lifting cylinder, a connecting seat is fixedly connected to the lower surface of the screen plate, a connecting ring is fixedly connected to the inner wall of the incinerator below the connecting seat, a telescopic rod is uniformly fixedly connected to the connecting ring and the connecting seat, a guide rod is uniformly fixedly connected to the upper surface of the mounting seat, and a rod groove adapted to the guide rod is opened on the lower surface of the sleeve.

[0015] Furthermore, the output shaft is rotatably connected to the mounting base, a driving bevel gear is fixedly connected to the bottom of the output shaft, a transmission chamber is fixedly connected to the lower surface of the mounting base, a crankshaft is symmetrically rotatably connected between the transmission chamber and the side plate of the incinerator body, a driven bevel gear is fixedly connected to one end of the crankshaft, the driven bevel gear meshes with the driving bevel gear, a pin is fixedly connected to the lower surface of the screen plate, and a connecting rod is hinged between the pin and the crossbar of the crankshaft.

[0016] Furthermore, it also includes a heat collection device, which includes a delivery pipe, a hot water tank, and heating pipes; the combustion seat has an internal cavity, and the incinerator body is fitted with an annular transfer pipe. One end of the delivery pipe is fixedly connected to the inner ring of the transfer pipe, and the other end of the delivery pipe is connected to the cavity. The hot water tank is located outside the incinerator body, and a circulating water pump is fixedly connected to the outer wall of the hot water tank. The inlet of the circulating water pump is connected to the hot water tank, and the outlet of the circulating water pump is connected to the transfer pipe through an outlet pipe. An annular chamber is fixedly connected to the second lifting cylinder below the combustion seat. The annular chamber is connected to the hot water tank through a return pipe, and the heating pipes are evenly arranged circumferentially between the annular chamber and the combustion seat.

[0017] Furthermore, the heating tube is a serpentine coil.

[0018] Furthermore, the bottom of the ash discharge pipe is threaded with a cover.

[0019] The beneficial effects of this invention are as follows: This invention uses a motor to drive the lifting blades to rotate, thereby conveying the waste from bottom to top. The waste is burned on the combustion seat, and the waste that is not fully burned slides down the combustion seat, thus keeping the waste in a circulating flow during incineration, allowing the waste to burn completely. The burning waste falls onto the screen plate and is screened by vibration, thereby shaking off the ash produced by combustion. The sealing ring can achieve intermittent feeding, thereby simultaneously cleaning up the ash from combustion and adding new material, allowing the incineration work to continue. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 : A schematic diagram of the structure of a circulating fluidized bed waste incineration boiler according to the present invention;

[0022] Figure 2 : A schematic diagram of the piping arrangement of the heat collection device described in this invention;

[0023] Figure 3 : A schematic diagram of the structure of the sieve plate described in this invention;

[0024] Figure 4 : A schematic diagram of the sealing ring described in this invention;

[0025] Figure 5 : Figure 1 A magnified view of a portion at point A shown;

[0026] Figure 6 : Figure 1 A magnified view of a portion at point B shown.

[0027] The attached figures are labeled as follows:

[0028] 1-Incinerator body, 11-Ash hopper, 12-Ash discharge pipe, 13-Cover, 14-Feeding pipe, 21-Mounting base, 22-First lifting cylinder, 23-Second lifting cylinder, 24-Motor, 25-Support rod, 26-Connecting rod, 27-Combustion seat, 28-Hood, 29-Output shaft, 210-Lifting blade, 3-Screen plate, 31-Sleeve, 32-Screen mesh, 41-Storage cylinder, 42-End cap, 43-Bearing sleeve, 44-Sealing ring, 45-Through groove 46-Gear ring, 47-Gear, 51-Connecting seat, 52-Connecting ring, 53-Telescopic rod, 54-Guide rod, 55-Rod groove, 56-Driving bevel gear, 57-Transmission chamber, 58-Crankshaft, 59-Driven bevel gear, 510-Pin, 510-Connecting rod, 61-Delivery pipe, 62-Hot water tank, 63-Heating pipe, 64-Cavity, 65-Transfer pipe, 66-Circulating water pump, 67-Outlet pipe, 68-Annular chamber, 69-Return pipe. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figure 1-6 As shown, the present invention has the following embodiments.

[0031] Example 1

[0032] A circulating fluidized bed waste incineration boiler, comprising:

[0033] The incinerator body 1 has a bowl-shaped ash hopper 11 fixedly connected to the bottom of the incinerator body 1, an ash discharge pipe 12 fixedly connected to the bottom of the ash hopper 11, a cover 13 threadedly connected to the bottom of the ash discharge pipe 12, and a feeding pipe 14 fixedly connected to the left side of the top plate of the incinerator body 1.

[0034] The circulating flow device includes a mounting base 21, a first lifting cylinder 22, a second lifting cylinder 23, and a motor 24. The mounting base 21 is fixed to the lower part of the inner cavity of the incinerator body 1 by evenly arranged circumferential support rods 25. The first lifting cylinder 22 is fixed to the center of the upper surface of the mounting base 21. A connecting rod 26 is evenly fixed to the top of the first lifting cylinder 22. The second lifting cylinder 23 is fixed to the top of the connecting rod 26. An annular combustion seat 27 is fixed to the upper part of the outer wall of the second lifting cylinder 23. A cover 28 is fixed to the top plate of the incinerator body 1. The motor 24 is fixed inside the cover 28. The motor 24 is provided with a vertically downward output shaft 29. The output shaft 29 is rotatably connected to the top plate of the incinerator body 1. The axis of the output shaft 29 coincides with the axis of the first lifting cylinder 22. A spiral-shaped lifting blade 210 is fixed to the output shaft 29.

[0035] The screen plate 3 is annular, and a sleeve 31 is fixedly connected to the lower surface of the screen plate 3. The sleeve 31 is fitted outside the first lifting cylinder 22. The outer ring of the screen is sealed and slidably connected in the incinerator body 1. Screen mesh 32 is uniformly fixedly connected to the circumference of the screen plate 3.

[0036] Preferably, the upper surface of the combustion seat 27 is inclined downward in the direction away from the second lifting cylinder 23, and the upper surface of the sieve plate 3 is inclined downward in the direction pointing towards the center of the incinerator body 1.

[0037] In this embodiment:

[0038] like Figure 1 As shown, the waste enters the incinerator body 1 through the feeding pipe 14. When the motor 24 is working, it drives the output shaft 29 and the lifting blades 210 to rotate. The lifting blades 210 can transport the waste from bottom to top. The waste discharged from the bottom of the second lifting cylinder 23 is burned on the combustion seat 27. After burning, the waste slides down on the combustion seat 27 and falls through the screen plate 3 into the first lifting cylinder 22. Under the action of the lifting blades 210, it continues to be transported, thus realizing the circulation of waste and making the combustion of waste more complete.

[0039] When the incinerated waste slides down the screen plate 3, the ash produced by incineration enters the ash hopper 11 through the support rod 25 due to the screen 32. The cover 13 can be opened periodically to process the ash in the ash hopper 11.

[0040] Example 2

[0041] A storage cylinder 41 is fixedly connected to the top of the feeding pipe 14. An end cap 42 is provided on the top of the storage cylinder 41. A bearing sleeve 43 is fixedly connected to the lower surface of the incinerator body 1. A sealing ring 44 is rotatably connected inside the bearing sleeve 43. A through groove 45 corresponding to the feeding pipe 14 is opened on the sealing ring 44. A toothed ring 46 is fixedly connected to the inner ring of the sealing ring 44. A gear 47 is fixedly connected to the output shaft 29. The gear 47 and the toothed ring 46 mesh with each other.

[0042] In this embodiment:

[0043] When the output shaft 29 rotates, it drives the gear 47 to rotate. The gear 47 drives the gear ring 46 that meshes with it to rotate, thereby rotating the sealing ring 44. When the sealing ring 44 rotates, when the through groove 45 is aligned with the feeding pipe 14, the new material in the storage cylinder 41 falls into the incinerator body 1, thus realizing the intermittent feeding of waste. Combined with the cleaning of ash, the waste incineration can be carried out continuously without interruption.

[0044] Example 3

[0045] The sleeve 31 is slidably connected to the first lifting cylinder 22. A connecting seat 51 is fixedly connected to the lower surface of the screen plate 3. A connecting ring 52 is fixedly connected to the inner wall of the incinerator body 1 below the connecting seat 51. A telescopic rod 53 is uniformly fixedly connected to the connecting ring 52 and the connecting seat 51. A guide rod 54 is uniformly fixedly connected to the upper surface of the mounting base 21. A rod groove 55 adapted to the guide rod 54 is opened on the lower surface of the sleeve 31.

[0046] Preferably, the output shaft 29 is rotatably connected to the mounting base 21, the bottom of the output shaft 29 is fixedly connected to the driving bevel gear 56, the lower surface of the mounting base 21 is fixedly connected to the transmission chamber 57, the transmission chamber 57 and the side plate of the incinerator body 1 are symmetrically rotatably connected to the crankshaft 58, one end of the crankshaft 58 is fixedly connected to the driven bevel gear 59, the driven bevel gear 59 meshes with the driving bevel gear 56, the lower surface of the screen plate 3 is fixedly connected to the pin 510, and the pin 510 and the crossbar of the crankshaft 58 are hinged to the connecting rod 511.

[0047] In this embodiment:

[0048] When the output shaft 29 rotates, it also drives the active bevel gear 56 to rotate. The active bevel gear 56 drives the driven bevel gear 59 that meshes with it to rotate, thereby rotating the crankshaft 58. The crankshaft 58 causes the screen plate 3 to vibrate up and down through the connecting rod 511, thus achieving a better ash screening effect.

[0049] Example 4

[0050] It also includes a heat collection device, which includes a delivery pipe 61, a hot water tank 62, and a heating pipe 63. The combustion seat 27 has a cavity 64 inside, and an annular transfer pipe 65 is sleeved on the outside of the incinerator body 1. One end of the delivery pipe 61 is fixedly connected to the inner ring of the transfer pipe 65, and the other end of the delivery pipe 61 is connected to the cavity 64. The hot water tank 62 is located outside the incinerator body 1. A circulating water pump 66 is fixedly connected to the outer wall of the hot water tank 62. The inlet of the circulating water pump 66 is connected to the hot water tank 62, and the outlet of the circulating water pump 66 is connected to the transfer pipe 65 through the outlet pipe 67. An annular chamber 68 is fixedly connected to the second lifting cylinder 23 below the combustion seat 27. The annular chamber 68 is connected to the hot water tank 62 through the return pipe 69. The heating pipe 63 is evenly arranged circumferentially between the annular chamber 68 and the combustion seat 27.

[0051] Preferably, the heating element 63 is a serpentine coil.

[0052] In this embodiment:

[0053] The circulating water pump 66 draws water from the hot water tank 62 and sequentially enters the cavity 64 through the outlet pipe 67, the transfer pipe 65 and the delivery pipe 61. The water in the cavity 64 enters the annular chamber 68 through the heating pipe 63 and then enters the hot water tank 62 through the return pipe 69.

[0054] Water is heated as it flows through the incinerator body 1, and hot water is stored in a hot water tank 62. External water-using equipment draws water from the hot water tank 62 for use.

[0055] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A circulating fluidized bed waste incineration boiler, characterized in that, include: The incinerator body has a bowl-shaped ash hopper fixed to its bottom, an ash discharge pipe fixed to its bottom, and a feeding pipe fixed to the left side of the top plate of the incinerator body. A circulating flow device includes a mounting base, a first lifting cylinder, a second lifting cylinder, and a motor. The mounting base is fixed to the lower part of the inner cavity of the incinerator body by evenly arranged circumferential support rods. The first lifting cylinder is fixed to the center of the upper surface of the mounting base. A connecting rod is evenly fixed to the top of the first lifting cylinder. The second lifting cylinder is fixed to the top of the connecting rod. An annular combustion seat is fixed to the upper part of the outer wall of the second lifting cylinder. A machine cover is fixed to the top plate of the incinerator body. The motor is fixed inside the machine cover. The motor has a vertically downward output shaft. The output shaft is rotatably connected to the top plate of the incinerator body. The axis of the output shaft coincides with the axis of the first lifting cylinder. Spiral lifting blades are fixed to the output shaft. The screen plate is annular, and a sleeve is fixedly connected to the lower surface of the screen plate. The sleeve is fitted outside the first lifting cylinder. The outer ring of the screen is slidably and sealed in the incinerator body. Screen mesh is uniformly fixed to the circumference of the screen plate. The upper surface of the combustion chamber is inclined downward in the direction away from the second lifting cylinder; The upper surface of the sieve plate is inclined downward in the direction pointing towards the center of the incinerator body; A heat collection device includes a delivery pipe, a hot water tank, and heating pipes. The combustion chamber has an internal cavity, and an annular transfer pipe is fitted around the outside of the incinerator body. One end of the delivery pipe is fixedly connected to the inner ring of the transfer pipe, and the other end of the delivery pipe communicates with the cavity. The hot water tank is located outside the incinerator body, and a circulating water pump is fixedly connected to its outer wall. The inlet of the circulating water pump is connected to the hot water tank, and the outlet of the circulating water pump is connected to the transfer pipe via an outlet pipe. An annular chamber is fixedly connected to a second lifting cylinder below the combustion chamber, and the annular chamber is connected to the hot water tank via a return pipe. The heating pipes are evenly distributed circumferentially between the annular chamber and the combustion chamber.

2. A circulating fluidized bed waste incineration boiler according to claim 1, characterized in that, A storage cylinder is fixedly connected to the top of the feeding pipe, and a bearing sleeve is fixedly connected to the lower surface of the incinerator body. A sealing ring is rotatably connected inside the bearing sleeve. A through groove corresponding to the feeding pipe is opened on the sealing ring. A toothed ring is fixedly connected to the inner ring of the sealing ring. A gear is fixedly connected to the output shaft. The gear and the toothed ring mesh with each other.

3. A circulating fluidized bed waste incineration boiler according to claim 2, characterized in that, The storage cylinder is equipped with an end cap at the top.

4. A circulating fluidized bed waste incineration boiler according to claim 1, characterized in that, The sleeve is slidably connected to the first lifting cylinder. A connecting seat is fixedly connected to the lower surface of the screen plate. A connecting ring is fixedly connected to the inner wall of the incinerator below the connecting seat. A telescopic rod is uniformly fixedly connected to the connecting ring and the connecting seat around the circumference. A guide rod is uniformly fixedly connected to the upper surface of the mounting seat around the circumference. A rod groove adapted to the guide rod is opened on the lower surface of the sleeve.

5. A circulating fluidized bed waste incineration boiler according to claim 4, characterized in that, The output shaft is rotatably connected to the mounting base. A driving bevel gear is fixedly connected to the bottom of the output shaft. A transmission chamber is fixedly connected to the lower surface of the mounting base. A crankshaft is symmetrically rotatably connected between the transmission chamber and the side plate of the incinerator body. A driven bevel gear is fixedly connected to one end of the crankshaft. The driven bevel gear meshes with the driving bevel gear. A pin is fixedly connected to the lower surface of the screen plate. A connecting rod is hinged between the pin and the crossbar of the crankshaft.

6. A circulating fluidized bed waste incineration boiler according to claim 1, characterized in that, The heating element is a serpentine coil.

7. A circulating fluidized bed waste incineration boiler according to claim 1, characterized in that, The bottom of the ash discharge pipe is threaded with a cover.

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