Pyrolysis gasifier with uniform mixing, slag dropping or slag discharge

Abstract

The present invention provides a pyrolysis gasification furnace with uniform material mixing, slag dropping or slag discharge, comprising a fixed plate, a slag plate, at least two driving mechanisms, at least two transmission mechanisms, at least two driving shafts and at least one rotating wheel. All driving shafts are coaxially connected together through tapered bearings in a manner that one driving shaft is nested in the outer circumference of another driving shaft and have a total of three installation positions. The transmission mechanisms are respectively connected to the driving shafts one by one to drive different driving shafts to rotate differentially, and the driving shafts respectively drive the corresponding rotating wheels to rotate. After entering the pyrolysis gasification furnace, the material falls into the fixed plate for pyrolysis and forms slag that falls into the slag plate. The rotating wheel at the first installation position rotates to mix the material before it falls into the fixed plate; the rotating wheel at the second installation position drives the slag on the fixed plate to fall to the slag plate; the rotating wheel at the third installation position rotates to sweep the slag on the slag plate to the slag outlet, thereby realizing slag discharge.

Description

Technical Field

[0001] The invention relates to the field of solid waste treatment, and in particular to a pyrolysis gasification furnace capable of uniformly mixing materials, dropping slag and discharging slag. Background Art

[0002] At present, most of the pyrolysis gasifiers on the market use split devices to achieve mixing, slag dropping and slag discharge respectively. The main defects of the pyrolysis gasifier with this structure are: first, the split structure that can meet the multiple functions of mixing, slag dropping and slag discharge of the pyrolysis gasifier requires a larger foundation. Therefore, the bottom of the general pyrolysis gasifier needs to be dug into the ground or a high foundation pedestal needs to be built, which occupies a large area and has a high investment cost; second, the general pyrolysis gasifier uses a simple slag discharge mechanism to achieve slag discharge, and no slag dropping mechanism is set. When the fixed garbage composition is relatively complex and the slag particle size is large, it is easy to cause slag accumulation and cause blockage of the furnace plate. Summary of the invention

[0003] The purpose of the present invention is to provide a pyrolysis gasifier with uniform material mixing, slag dropping or slag discharging, so as to solve the problems that the existing pyrolysis gasifier adopts a separate structure for material mixing, slag dropping and slag discharging, occupies a large area, has a high investment cost, and has a simple slag dropping and slag discharging mechanism that easily causes furnace plate blockage.

[0004] In order to solve the above problems, the present invention provides a pyrolysis gasification furnace with uniform material mixing, slag dropping or slag discharge, comprising a fixed plate, a slag plate, at least two driving mechanisms, at least two transmission mechanisms, at least two driving shafts and at least one rotating wheel. All driving mechanisms are connected to and drive the transmission mechanisms in a one-to-one correspondence. All driving shafts are coaxially connected together through tapered bearings in a manner that one driving shaft is nested in the outer circumference of another driving shaft and have a total of three installation positions. All transmission mechanisms are connected to the driving shafts in a one-to-one correspondence to drive different driving shafts to rotate differentially. When there are multiple rotating wheels, each rotating wheel is installed on one of the driving shafts, and all the rotating wheels are distributed in multiple installation positions; the driving shafts drive the corresponding rotating wheels to rotate respectively. The fixed plate is used to carry the material to be pyrolyzed. The slag plate is used to carry the slag formed after the material is pyrolyzed, and the slag plate is provided with a slag outlet. After the loaded material enters the pyrolysis gasification furnace, it falls into the fixed plate for pyrolysis, and the material is pyrolyzed to form slag and falls to the slag plate, and the slag is discharged through the slag outlet. The rotating wheel located at the first installation position rotates to mix the material before it falls into the fixed plate; the rotating wheel located at the second installation position drives the slag on the fixed plate to fall to the slag plate; the rotating wheel located at the third installation position rotates to sweep the slag on the slag plate to the slag outlet, thereby realizing slag discharge.

[0005] According to one embodiment of the present invention, when the number of driving mechanisms, transmission mechanisms and driving shafts is three, the three driving shafts correspond to three installation positions respectively, the number of rotating wheels is at least three, each driving shaft is installed with at least one rotating wheel, and the three driving shafts rotate differentially to drive the corresponding rotating wheels to mix materials, drop slag and discharge slag respectively.

[0006] According to one embodiment of the present invention, the number of rotating wheels is at least four, wherein two rotating wheels are installed at intervals on the same driving shaft for mixing materials, and the other two driving shafts are each installed with at least one rotating wheel for respectively performing slag dropping and slag discharging.

[0007] According to an embodiment of the present invention, there are multiple rotating wheels for slag discharge and the rotating wheels are arranged at intervals.

[0008] According to one embodiment of the present invention, the number of driving mechanisms, transmission mechanisms and driving shafts are all two, one driving shaft has two installation positions, and at least two rotating wheels are installed on the same driving shaft and are respectively located at the two installation positions of the driving shaft.

[0009] According to an embodiment of the present invention, the rotating wheels for mixing materials and dropping slag are both installed on the same driving shaft.

[0010] According to an embodiment of the present invention, the rotating wheels for mixing materials and discharging slag are both installed on the same driving shaft.

[0011] According to an embodiment of the present invention, the rotating wheels for slag dropping and slag discharging are both installed on the same driving shaft.

[0012] According to an embodiment of the present invention, the transmission mechanism is a transmission sprocket pair or a gear pair.

[0013] According to an embodiment of the present invention, the cracking gasifier further comprises a plurality of supports, and all the driving mechanisms are fixed to the supports in a one-to-one correspondence.

[0014] Compared with the prior art, this technical solution has the following advantages:

[0015] The present invention sets at least two drive shafts to be coaxially nested and connected together through tapered bearings, and correspondingly sets at least two drive mechanisms and at least two transmission mechanisms to drive the drive shafts respectively, so that the coaxially connected multiple drive shafts can rotate differentially, thereby driving multiple different rotating wheels to rotate at different speeds according to needs. After all the drive shafts are connected as one, there are a total of three installation positions, which correspond to three different functions. If the rotating wheel is installed at the first installation position, the rotating wheel rotates with the corresponding drive shaft and can mix the materials loaded into the cracking gasifier. If the rotating wheel is installed at the second installation position, the rotating wheel rotates with the corresponding drive shaft and can drive the slag on the fixed plate to fall to the slag plate. If the rotating wheel is installed at the third position, the rotating wheel rotates with the corresponding drive shaft and can sweep the slag to the slag outlet to achieve slag discharge. In actual applications, users can coaxially nest and connect two, three or even more drive shafts according to needs, and install one or more rotating wheels accordingly. Each installation position can be installed with one or more rotating wheels, and some installation positions may not be installed with rotating wheels. In addition, when there are two drive shafts, any two of the three installation positions are located on the same drive shaft, and the speeds of the rotating wheels installed on the same drive shaft are the same. In this way, the speeds of the rotating wheels at different installation positions to achieve different functions can be flexibly controlled through the corresponding driving mechanism according to actual needs, making it easier to achieve uniform mixing, uniform slag dropping, and uniform slag discharge, effectively avoiding slag accumulation and blockage of the furnace plate.

[0016] Secondly, the present invention can compactly install multiple rotating wheels for mixing materials, dropping slag and discharging slag on a coaxially connected driving shaft, thereby saving a large amount of structural space at the bottom of the furnace, realizing multiple functions in a compact and narrow space, and the bottom of the pyrolysis gasification furnace does not need to be dug into the ground or built with a high reinforced concrete foundation.

[0017] Third, the multiple drive shafts of the present invention are coaxially nested and connected through tapered bearings to achieve differential rotation, which is equivalent to achieving differential rotation of multiple sets of rotating mechanisms through only one shaft, with a simple structure and high cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the pyrolysis gasification furnace for uniform material mixing, slag dropping or slag discharging provided by the present invention;

[0019] Figure 2 yes Figure 1 A partial enlarged view of the H position in the middle to show the nested connection of the three drive shafts. DETAILED DESCRIPTION

[0020] The following description is only used to disclose the present invention so that those skilled in the art can implement the present invention. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the present invention.

[0021] like Figure 1 As shown, the present invention provides a pyrolysis gasification furnace with uniform material mixing, slag dropping or slag discharge. The pyrolysis gasification furnace is used for the treatment of solid wastes, which can not only achieve uniform material mixing, uniform slag dropping and uniform slag discharge, but also save furnace bottom space. The furnace bottom does not need to be dug deep underground or built with a large foundation pedestal, which is more economical and efficient. Specifically, the pyrolysis gasification furnace includes a fixed plate 10, a slag plate 20, at least two driving mechanisms 30, at least two transmission mechanisms 40, at least two driving shafts 50, and at least one rotating wheel 60.

[0022] The fixed plate 10 is located in the pyrolysis gasification furnace and is used to carry the materials to be pyrolyzed, mainly various solid wastes. After the materials are loaded into the pyrolysis gasification furnace, they will fall onto the fixed plate 10 and undergo pyrolysis reaction under certain conditions.

[0023] The slag pan 20 is located in the pyrolysis gasification furnace and at the bottom of the fixed plate 10. The slag pan 20 is used to carry the slag formed after the material is pyrolyzed. A slag outlet is provided at the bottom of the slag pan 20. Slag is formed after the material is pyrolyzed and falls into the slag pan 20, and the slag is discharged through the slag outlet of the slag pan 20.

[0024] The driving mechanism 30 is located at the bottom of the pyrolysis gasification furnace and is used to drive the transmission mechanism 40. Optionally, the driving mechanism 30 is a motor. Optionally, in this embodiment, the number of the driving mechanisms 30 is three; in other embodiments, according to actual needs, the number of the driving mechanisms 30 is other values, such as two or four.

[0025] The pyrolysis gasification furnace further includes a plurality of supports 70, and the number of the supports 70 is consistent with the number of the driving mechanisms 30. All the driving mechanisms 30 are fixed to the supports 70 one by one. For example, in this embodiment, the number of the driving mechanisms 30 is three, and the number of the supports 70 is also three, and each driving mechanism 30 is installed on one of the supports 70.

[0026] The number of transmission mechanisms 40 is consistent with the number of driving mechanisms 30, and all driving mechanisms 30 are connected to and drive the transmission mechanisms 40 in a one-to-one correspondence. Optionally, in this embodiment, the transmission mechanism 40 is a transmission sprocket pair, and the number of transmission mechanisms 40 is also three, and each transmission mechanism 40 is connected to one of the driving mechanisms 30 in a one-to-one correspondence. In other embodiments, according to the different number of driving mechanisms 30, the number of transmission mechanisms 40 is different accordingly, for example, the number of transmission mechanisms 40 is two or four; the transmission mechanism 40 can also be other transmission mechanisms such as gear pairs.

[0027] The number of drive shafts 50 is consistent with the number of transmission mechanisms 40. It can be understood that the number of drive shafts 50 is also consistent with the number of drive mechanisms 30. All drive shafts 50 are coaxially connected together through tapered bearings in a manner that one drive shaft 50 is nested in the outer circumference of another drive shaft 50. After all drive shafts 50 are coaxially nested and connected together, it is equivalent to forming a whole shaft and standing upright in the center of the cracking gasifier. After all drive shafts 50 are formed into one body, there are a total of three installation positions, and the three installation positions are arranged in sequence from high to low in the cracking gasifier; that is, the first installation position is close to the charging inlet at the top of the cracking gasifier, and the third installation position is close to the bottom of the cracking gasifier. All transmission mechanisms 40 are connected to the drive shafts 50 one by one to drive different drive shafts 50 to rotate at differential speeds.

[0028] like Figure 1 As shown, in this embodiment, the number of drive shafts 50 is three, wherein the first drive shaft 50 is connected to the second drive shaft 50 through a tapered bearing, and the second drive shaft 50 is sleeved on the outer periphery of the first drive shaft 50, so that the first drive shaft 50 and the second drive shaft 50 can achieve differential rotation on the basis of being coaxial. Similarly, the second drive shaft 50 is connected to the third drive shaft 50 through a tapered bearing, and the third drive shaft 50 is nested on the outer periphery of the second drive shaft 50, so that the second drive shaft 50 and the third drive shaft 50 can achieve differential rotation on the basis of being coaxial. It can be understood that the rotation speeds of any two of the first drive shaft 50, the second drive shaft 50 and the third drive shaft 50 can be different. The three drive shafts 50 correspond to the three installation positions one by one, that is, each drive shaft 50 has one installation position. Each drive shaft 50 is connected to one of the transmission mechanisms 40 in a one-to-one correspondence, and each transmission mechanism 40 is connected to one of the drive mechanisms 30, so that the rotational speed of each drive shaft 50 is controlled by a corresponding transmission mechanism 40 and drive mechanism 30, that is, the rotational speeds of the three drive shafts 50 are controlled separately, and the three drive shafts 50 can achieve differential rotation.

[0029] In other embodiments, as required, the number of the drive shafts 50 is other values, such as two or four, and all the drive shafts 50 can be coaxially nested and connected in the above manner. When the number of the drive shafts 50 is two, one of the drive shafts 50 can have two installation positions, that is, two of the three installation positions are located on the same drive shaft 50.

[0030] The rotating wheel 60 is mounted on the driving shaft 50 and rotates with the driving shaft 50. When the number of the rotating wheel 60 is one, the rotating wheel 50 is installed on one of the driving shafts 50 according to actual needs and is only located at any one of the three installation positions. When the number of the rotating wheels 60 is multiple, each rotating wheel 60 is installed on one of the driving shafts 50, and all the rotating wheels 60 are distributed at one or more installation positions; that is, the rotating wheel 60 can be installed at only one or two installation positions, or the rotating wheels 60 can be installed at all three installation positions. The driving shafts 50 drive the corresponding rotating wheels 60 to rotate respectively, that is, when any driving shaft 50 rotates, the corresponding rotating wheel 60 will be driven to rotate. Since different driving shafts 50 rotate at differential speeds, the speeds of the rotating wheels 60 installed on different driving shafts 50 are different.

[0031] The rotating wheel 60 at the first installation position rotates with the first drive shaft 50 and mixes the material falling into the fixed plate 10. The rotating wheel 60 at the second installation position rotates with the second drive shaft 50 and drives the slag on the fixed plate 10 to fall to the slag plate 20. The rotating wheel 60 at the third installation position rotates with the third drive shaft 50 to sweep the slag on the slag plate 20 to the slag outlet of the slag plate 20, thereby achieving slag discharge.

[0032] For example, the number of rotating wheels 60 is at least three, and each driving shaft 50 is installed with at least one rotating wheel 60. The three driving shafts 50 rotate differentially to drive the corresponding rotating wheels 60 to mix materials, drop slag and discharge slag. Taking three rotating wheels 60 as an example, the three rotating wheels 60 are installed on the three driving shafts 50 one by one, so that each driving shaft 50 has an installation position and is installed with a rotating wheel 60. The rotation speeds of the three rotating wheels 60 can be different from each other. The first installation position is close to the material loading inlet at the top of the pyrolysis gasification furnace. Therefore, after the material enters the pyrolysis gasification furnace, it is first stirred by the rotating wheel 60 located at the first installation position and then falls into the fixed plate 10. After the material is cracked on the fixed plate 10, it drops slag to the slag plate 20 driven by the rotating wheel 60 located at the second installation position. When the rotating wheel 60 located at the third position rotates, it can sweep the slag in the slag plate 20 to the slag outlet to achieve slag discharge.

[0033] like Figure 1As shown, in this embodiment, the number of rotating wheels 60 is at least four, wherein two rotating wheels 60 are respectively installed at intervals on the same driving shaft 50 for mixing materials, that is, two rotating wheels 60 are installed at intervals on the first installation position of the first driving shaft 50. The other two driving shafts 50 are each installed with at least one rotating wheel for slag dropping and slag discharging, respectively. Before starting the cracking reaction, the material is loaded from the top of the cracking gasifier, and the two rotating wheels 60 and the fixed plate 10 located at the first installation position in the cracking gasifier serve as the main bearing structure of the material. During the cracking process, the material gradually falls into the fixed plate 10 while being evenly mixed as the two rotating wheels 60 located at the first installation position rotate. Relatively speaking, the material at the top is gradually iterated downward after the material at the bottom is cracked.

[0034] Optionally, there are multiple rotating wheels 60 for slag discharge and they are arranged at intervals, so that the multiple rotating wheels 60 can respectively sweep the slag at different positions in the slag pan 20 to the slag discharge port.

[0035] For another example, in another embodiment, the number of the driving mechanism 30, the transmission mechanism 40 and the driving shaft 50 are all two, and one of the driving shafts 50 has two installation positions, and at least two rotating wheels 60 are installed on the same driving shaft 50 and are respectively located at the two installation positions of the driving shaft 50, so that the rotating wheels 60 respectively located at the two installation positions to achieve two different functions are installed on the same driving shaft 50 and have the same rotation speed. For example, taking three rotating wheels 60 as an example, the rotating wheel 60 located at the first installation position for mixing materials and the rotating wheel 60 located at the second installation position for slag dropping are both installed on one of the driving shafts 50, and the remaining rotating wheel 60 located at the third installation position is installed on another driving shaft 50. Of course, in other examples, the rotating wheels 60 used for mixing materials and discharging slag can also be installed on the same driving shaft 50, or the rotating wheels 60 used for slag dropping and discharging slag can be installed on the same driving shaft 50.

[0036] In addition, in some other embodiments, the rotating wheel 60 may be installed at only one of the installation positions. For example, in a whole body composed of two or three drive shafts 50 coaxially connected together, only one or more rotating wheels 60 are installed at the first installation position for mixing materials, while the rotating wheel 60 located at the second installation position for slag dropping and the rotating wheel 60 located at the third installation position for slag discharge are omitted. The three installation positions correspond to three functions respectively, and the rotating wheel 60 may be installed at only one installation position to achieve only one of the functions; or the rotating wheels 60 may be installed at multiple installation positions to achieve a combination of corresponding multiple functions. In short, as long as the inventive concept of realizing differential rotation by coaxially connecting two, three or more drive shafts 50 together to drive the corresponding rotating wheels 60 to rotate to correspondingly achieve material mixing, slag dropping or slag discharge is used, it belongs to the scope of the present invention.

[0037] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed and modified in any way without departing from the principles.

Claims

1. A pyrolysis gasification furnace with uniform material mixing, slag dropping or slag discharging, characterized in that: include: at least two drive mechanisms; At least two transmission mechanisms, all of the driving mechanisms are connected to and drive the transmission mechanisms in a one-to-one correspondence; At least two drive shafts, all of which are coaxially connected together through tapered bearings in a manner that one of the drive shafts is nested in the outer circumference of another drive shaft and have a total of three installation positions, and all of the transmission mechanisms are connected to the drive shafts one by one to drive the different drive shafts to rotate at differential speeds; At least one rotating wheel. When there are multiple rotating wheels, each rotating wheel is installed on one of the driving shafts, and all the rotating wheels are distributed at multiple installation positions; the driving shafts respectively drive the corresponding rotating wheels to rotate; A fixed plate for carrying the material to be cracked; A slag pan is used to carry the slag formed after the material is cracked, and the slag pan is provided with a slag outlet; after the loaded material enters the cracking gasifier, it falls into the fixed pan for cracking, and after the material is cracked, slag is formed and falls into the slag pan, and the slag is discharged through the slag outlet; The rotating wheel at the first installation position rotates to mix the material before it falls into the fixed disk; the rotating wheel at the second installation position drives the slag on the fixed disk to fall to the slag disk; the rotating wheel at the third installation position rotates to sweep the slag on the slag disk to the slag outlet, thereby realizing slag discharge; When the number of the driving mechanism, the transmission mechanism, and the driving shaft are all three, the three driving shafts correspond to three installation positions respectively, the number of the rotating wheels is at least three, each driving shaft is installed with at least one rotating wheel, and the three driving shafts rotate differentially to drive the corresponding rotating wheels to mix materials, drop slag, and discharge slag respectively.

2. The cracking gasifier according to claim 1, characterized in that: The number of the rotating wheels is at least four, two of which are installed on the same driving shaft at intervals to mix the materials, and the other two driving shafts are each installed with at least one rotating wheel to respectively and correspondingly perform slag dropping and slag discharging.

3. The cracking gasifier according to claim 2, characterized in that: The number of the rotating wheels for slag discharge is multiple and they are arranged at intervals.

4. The cracking gasifier according to claim 1, characterized in that: The number of the driving mechanism, the transmission mechanism, and the driving shaft are all two, one of the driving shafts has two installation positions, and at least two rotating wheels are installed on the same driving shaft and are respectively located at the two installation positions of the driving shaft.

5. The cracking gasifier according to claim 4, characterized in that: The rotating wheels used for mixing materials and dropping slag are all installed on the same driving shaft.

6. The pyrolysis gasifier according to claim 4, characterized in that: The rotating wheels used for mixing materials and discharging slag are all installed on the same driving shaft.

7. The cracking gasifier according to claim 4, characterized in that: The rotating wheels used for slag dropping and slag discharging are all installed on the same driving shaft.

8. The pyrolysis gasifier according to any one of claims 1 to 7, characterized in that: The transmission mechanism is a transmission sprocket pair or a gear pair.

9. The pyrolysis gasifier according to any one of claims 1 to 7, characterized in that: The cracking gasification furnace further comprises a plurality of supports, and all the driving mechanisms are fixed to the supports in a one-to-one correspondence.

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