Incinerator for solid waste

Abstract

The invention relates to the technical field of solid waste treatment, and discloses a solid waste incinerator which comprises an incinerator body and a fire grate arranged in the incinerator body, the fire grate comprises a plurality of arc-shaped plates hinged or rotationally connected relative to the incinerator body, the concave faces of the arc-shaped plates are used for bearing solid waste, and the arc-shaped plates are arranged in parallel in the axial direction of the arc-shaped plates; the heights of the arc-shaped plates are sequentially decreased in the axial direction, a first transmission wheel abutting against the arc-shaped plates is arranged on one side of each arc-shaped plate, each first transmission wheel is eccentrically connected to a first transmission shaft, and the first transmission shafts extend in the arrangement direction of the arc-shaped plates. And the distance d from the axis of the first transmission shaft to each arc-shaped plate is gradually increased and then gradually decreased in the arrangement direction of the arc-shaped plates to form circulation. According to the incinerator, solid waste can be turned over through angular displacement operation of the arc-shaped plate, the contact area of the solid waste and air is guaranteed, the displacement path of the solid waste is a swing curve, the combustion time of the solid waste can be remarkably prolonged, and then combustion is sufficient.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste incineration treatment equipment, and particularly to an incinerator for solid waste. Background Art

[0002] A solid waste incinerator is a device for efficiently treating garbage. By pyrolyzing organic matter at high temperatures, it can effectively reduce the volume of solid waste and recover energy. As the core equipment for solid waste incineration treatment, the structural design of the grate furnace is directly related to the combustion efficiency and operation stability. Traditional grate furnaces are mainly divided into two categories: fixed grates and movable grates according to their structural characteristics, and there are significant differences between them in application scenarios and process performance.

[0003] For small and medium-sized solid waste treatment scenarios, fixed grate furnaces are widely used because of their simple structure and low manufacturing cost. Its typical structure is that the fixedly installed grate plates are arranged horizontally or in a stepped manner to form a continuous combustion surface, and combustion support is achieved through bottom air supply; However, the following technical defects exist in actual operation: The static grate is difficult to effectively break the dense layer formed by the accumulation of solid waste, resulting in insufficient internal combustion. This is mainly due to the insufficient contact between the pyrolysis gas and residual carbon with the air supplied at the bottom, leading to incomplete combustion. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide an incinerator for solid waste.

[0005] The incinerator for solid waste according to the present invention includes a furnace body and a grate placed inside the furnace body. The grate includes a number of arc-shaped plates that are hinged or rotatably connected relative to the furnace body, so that each arc-shaped plate can swing to generate an angular displacement. The concave surface of the arc-shaped plate is used to receive solid waste. The number of arc-shaped plates are arranged side by side along their axial direction to form a semi-circular cylindrical groove, so that the solid waste can be burned in the cylindrical groove. The number of arc-shaped plates are arranged such that their axial heights decrease in sequence, so that the semi-circular cylindrical groove is inclined, facilitating the transfer of waste; The purpose of such a setting is as follows: Different from the static grate in the traditional structure, the grate in the incinerator is designed as a movable grate. By using the angular displacement operation of the arc-shaped plate, the solid waste can be turned over, ensuring the contact area between the solid waste and air. And because the arc-shaped plate is arranged in a slope, during the turning process, the solid waste also moves axially under the combined action of gravity and turning, realizing the transfer operation of the solid waste.

[0006] Specifically, a first transmission wheel abutted against the arc-shaped plate is arranged on one side of each arc-shaped plate. Each first transmission wheel is eccentrically connected to the first transmission shaft. The first transmission shaft extends along the arrangement direction of the arc-shaped plates. The distance d from the axis of the first transmission shaft to each arc-shaped plate increases first and then decreases in sequence along the arrangement direction of the arc-shaped plates and forms a cycle. The purpose of such a setting is as follows: Since the first transmission wheel is eccentrically arranged and the distance d is cyclically arranged, when the grate is in a stationary state, the inclination angles of the arc-shaped plates increase first and then decrease in sequence along the arrangement direction of the arc-shaped plates and form a cycle. When the grate is operating, the first transmission shaft drives each first transmission wheel to rotate, causing each arc-shaped plate to swing. Due to the different initial inclination angles, the swinging operation of a certain arc-shaped plate will have a lagging or leading effect compared with the adjacent arc-shaped plate. Therefore, during the transportation of solid waste, its displacement path is a swinging curve, which can significantly increase its combustion time and further ensure full combustion. In addition, the arc-shaped plates can significantly turn over the materials, enabling the materials to come into full contact with the intake air. Correspondingly, the arc-shaped plates are also restricted by their shapes and are not conducive to the spreading and flattening of the materials. Therefore, they are only suitable for small-scale grate furnaces.

[0007] In some examples of the present invention, a second transmission wheel abutted against the arc-shaped plate is arranged on the other side of each arc-shaped plate. Each second transmission wheel is eccentrically connected to the second transmission shaft. The second transmission shaft also extends along the arrangement direction of the arc-shaped plates. The distance d' from the axis of the second transmission shaft to each arc-shaped plate decreases first and then increases in sequence along the arrangement direction of the arc-shaped plates and forms a cycle. The purpose of such a setting is as follows: It forms supports at both ends of the arc-shaped plate to prevent the unstable movement of the arc-shaped plate. Specifically, when the diameters of the first transmission wheel and the second transmission wheel are denoted as D, setting d + d' = D is a preferred solution. In this way, the swinging amplitude of the arc-shaped plate can be maintained. When the first transmission wheel drives the arc-shaped plate to swing, the second transmission wheel can adapt to the swinging amplitude of the arc-shaped plate, thereby assisting the swinging operation.

[0008] In some examples of the present invention, a first shaft hole is eccentrically formed on the first transmission wheel. The inner wall of the first shaft hole forms first teeth. The first transmission shaft is a gear shaft. The first transmission shaft sequentially penetrates through all the first transmission wheels. The first teeth on adjacent first transmission wheels are meshed with the first transmission shaft step by step. A second shaft hole is eccentrically formed on the second transmission wheel. The inner wall of the second shaft hole forms second teeth. The second transmission shaft is a gear shaft. The second transmission shaft sequentially penetrates through all the second transmission wheels. The second teeth on adjacent second transmission wheels are meshed with the second transmission shaft step by step.

[0009] The purpose of such a setting is as follows: The inclination angles between adjacent arc-shaped plates are controlled by the teeth, so that the difference between the inclination angles is constant, thereby making the displacement speed and swinging amplitude of the solid waste relatively consistent.

[0010] In some examples of the present invention, first and second extension arms are respectively formed on both sides of the arc-shaped plate. A first limiting position is provided between the first extension arm and the first transmission wheel through a first groove formed on both of them and a first protrusion fittingly placed in the first groove; a second limiting position is provided between the second extension arm and the second transmission wheel through a second groove formed on both of them and a second protrusion fittingly placed in the second groove.

[0011] The purpose of such a setting is: through the limiting operation of the groove and the protrusion, it is ensured that the arc-shaped plate always swings following the first transmission wheel and the second transmission wheel, avoiding the arc-shaped plate from detaching from the transmission wheel.

[0012] In some examples of the present invention, all the arc-shaped plates are connected through through holes opened in the middle of the arc-shaped plates and a shaft body passing through the through holes, enabling each arc-shaped plate to have an angular displacement along the shaft body.

[0013] In some examples of the present invention, the shaft body, the first transmission shaft, and the second transmission shaft are arranged in parallel with each other and are connected by a support frame.

[0014] The purpose of such a setting is: the three shaft parts are connected by the support frame, and then other components are connected by the three shaft parts, forming a stable overall structure of the grate.

[0015] In some examples of the present invention, both ends of the first transmission shaft and the second transmission shaft extend outside the furnace body and are connected to the bearing seats through bearings.

[0016] In some examples of the present invention, the shaft body, the first transmission shaft, and the second transmission shaft are respectively coaxially arranged with their corresponding bearings, and an included angle is formed between the axis of the bearing and the axis of the bearing seat.

[0017] The purpose of such a setting is: since the shaft body, the first transmission shaft, and the second transmission shaft are all arranged following the arc-shaped plate and are in an inclined state, in order to enable the bearings to stably assist the rotation of the three shaft parts, the bearings are set to be coaxial with the three shaft parts respectively, and the bearing seats need to be set to be relatively fixed on the horizontal plane. Therefore, an included angle is formed between the axis of the bearing and the axis of the bearing seat. In some examples of the present invention, the bearing seat includes a base and a top cover. A cylindrical groove seat for placing the bearing is formed between the base and the top cover, and the cylindrical groove seat is coaxial with the bearing.

[0018] In some examples of the present invention, a solid waste baffle is provided on the side of the grate with a higher height, and a slag discharge plate is provided on the side with a lower height.

[0019] The purpose of such a setting is: the side of the grate with a higher height corresponds to the feed hopper of the furnace body to receive solid waste. The solid waste baffle is used to prevent the solid waste from detaching from the grate, and the slag discharge plate is used to assist the slag after combustion to be transported away from the grate.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Top view of the incinerator for solid waste in the embodiment of the present invention; Figure 2 In the embodiment of the present invention, the attachment Figure 1 Cross-sectional view taken along line A-A; Figure 3 Top view of the grate in the embodiment of the present invention; Figure 4 Left view of the grate in the embodiment of the present invention; Figure 5 Right view of the grate in the embodiment of the present invention; Figure 6 In the embodiment of the present invention, the attachment Figure 3 Cross-sectional view taken along line B-B; Figure 7 Top view of the bearing and bearing housing in the embodiment of the present invention; Figure 8 In the embodiment of the present invention, the attachment Figure 7 Cross-sectional view taken along line C-C; Figure 9 In the embodiment of the present invention, the attachment Figure 3 Cross-sectional view taken along line D-D.

[0023] Description of the reference numerals in the drawings: Furnace body 1; Grate 2; Arc-shaped plate 21, first extension arm 211, second extension arm 212, first protrusion 213, second protrusion 214, through hole 215, air passage hole 216; First driving wheel 22, first shaft hole 221, first tooth 222, first groove 223; First transmission shaft 23; Second driving wheel 24, second shaft hole 241, second tooth 242, second groove 243; Second transmission shaft 25; Shaft body 26; Support frame 27; Bearing seat 28, base 281, top cover 282, cylindrical groove seat 283; Bearing 29; Solid waste baffle 3; Slag discharge plate 4; Feeding hopper 5. Specific implementation mode

[0024] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0028] The following referenceFigures 1 to 9 The following describes an incinerator for solid waste provided by an embodiment of the present invention.

[0029] Please refer to the attached Figure 1 ~attached Figure 2 The attached Figure 1 is a top view of the incinerator for solid waste, and the attached Figure 2 is the attached Figure 1 A cross-sectional view taken along A-A. The incinerator includes a furnace body 1 and a grate 2 disposed inside the furnace body 1. The grate 2 is used to receive solid waste, enabling the solid waste to perform a combustion operation on the grate and transporting the solid waste by the grate to transfer the solid waste to different combustion areas until it is burned out and discharged.

[0030] Please refer to the attached Figure 3 ~attached Figure 5 The attached Figure 3 is a top view of the grate, and the attached Figure 4 is a left view of the grate, and the attached Figure 5 is a right view of the grate. The grate 2 includes a number of arc-shaped plates 21 that are hinged or rotatably connected to the furnace body 1, enabling each arc-shaped plate 21 to swing at the lowest point of the arc-shaped plate to generate an angular displacement. Among them, a number of arc-shaped plates 21 are arranged side by side along their axial directions to form a concave, semi-circular cylindrical groove, and this concave cylindrical groove is used to receive solid waste, enabling the solid waste to perform combustion within the cylindrical groove. Continuing to refer to the attached Figure 4 ~attached Figure 5 A number of arc-shaped plates 21 are arranged such that their axial heights decrease successively, making the semi-circular cylindrical groove inclined to facilitate the transfer of waste. In this embodiment, that is, the arc-shaped plates 21 are arranged from left to right, and the heights of the arc-shaped plates 21 decrease successively from left to right. Thus, the solid waste is placed into the grate from the left and transfers to the right under the swinging operation of the arc-shaped plates 21 and the gravity of the solid waste itself, and a combustion operation is performed during the transfer process.

[0031] Please refer to the attached Figure 6 which is the attached Figure 3 A cross-sectional view taken along B-B. One side of each arc-shaped plate 21 is provided with a first transmission wheel 22 that abuts against the arc-shaped plate 21. Each first transmission wheel 22 is eccentrically connected to a first transmission shaft 23. The first transmission shaft 23 extends along the arrangement direction of the arc-shaped plates 21. That is, in this embodiment, the first transmission shaft 23 is also inclined from left to right and is parallel to the inclination direction of the arc-shaped plates 21. The distance d from the axis of the first transmission shaft 23 to each arc-shaped plate 21 increases successively and then decreases and forms a cycle along the arrangement direction of the arc-shaped plates 21. That is, the orientation between each first transmission wheel 22 and the corresponding arc-shaped plate 21 is inconsistent, so the distance d is inconsistent, causing all the arc-shaped plates 21 to form a Figure 5 wave shape as shown inFigure 4 the curve Q in Thus, when the grate 2 operates, the first transmission shaft 23 is driven by a power source such as a motor. The first transmission shaft 23 drives each first transmission wheel 22 to rotate, causing each arc-shaped plate 21 to swing, achieving sufficient stirring of the solid waste and enabling sufficient combustion. Moreover, due to the different initial inclination angles, the swinging operation of a certain arc-shaped plate 21 will have a lagging or leading effect compared to its adjacent arc-shaped plate 21. During the transportation of the solid waste, its displacement path is the curve Q, which can significantly increase its combustion time and further ensure sufficient combustion.

[0032] Please continue to refer to the attached Figure 3 and the attached Figure 6 , and each arc-shaped plate 21 is provided with an air passing hole 216 for the passage of air volume.

[0033] Please continue to refer to the attached Figure 6 , on the other side of each arc-shaped plate 21, there is a second transmission wheel 24 in contact with the arc-shaped plate 21. Each second transmission wheel 24 is eccentrically connected to the second transmission shaft 25. The second transmission shaft 25 also extends along the arrangement direction of the arc-shaped plates 21. That is, in this embodiment, the second transmission shaft 25 is also inclined from left to right and is parallel to the inclination direction of the arc-shaped plates 21. The distance d′ from the axis of the second transmission shaft 25 to each arc-shaped plate 21 decreases first and then increases in sequence along the arrangement direction of the arc-shaped plates 21 and forms a cycle. That is, when the distance d at one end of the arc-shaped plate 21 is at the maximum distance, the distance d′ is just at the minimum distance. Thus, in this embodiment, when the diameters of the first transmission wheel 22 and the second transmission wheel 24 are denoted as D, d + d′ = D; The purpose of this is to support both ends of the arc-shaped plate 21 and prevent the unstable movement of the arc-shaped plate 21. When the grate 2 operates, the second transmission shaft 25 is also driven by a power source such as a motor.

[0034] Please continue to refer to the attached Figure 6 , an eccentric first shaft hole 221 is provided on the first transmission wheel 22, and the inner wall of the first shaft hole 221 forms first teeth 222. The first transmission shaft 23 is a gear shaft. The first transmission shaft 23 sequentially passes through all the first transmission wheels 22, and the first teeth 222 on the adjacent first transmission wheels 22 are meshed with the first transmission shaft 23 step by step; The step-by-step meshing here means that: as Figure 6 in, a certain tooth v of the first transmission wheel 22 corresponding to the current arc-shaped plate 21 is meshed with the first transmission shaft 23. Then, for the arc-shaped plates 21 adjacent to the current arc-shaped plate 21 on the left and right, the teeth v′ and v″ corresponding to the tooth v for them are such that the tooth v′ and the tooth v″ rotate by an angular displacement β and β′ of one tooth to the two sides relative to the tooth v and then are meshed with the first transmission shaft 23.

[0035] Please continue to refer to the attachedFigure 6 On the second driving wheel 24, an eccentric second shaft hole 241 is formed, and second teeth 242 are formed on the inner wall of the second shaft hole 241. The second transmission shaft 25 is a gear shaft, and the second transmission shaft 25 sequentially penetrates through all the second driving wheels 24. The second teeth 242 on adjacent second driving wheels 24 are meshed step by step with the second driving wheels 24; Similarly, the step-by-step meshing here is the same as the meshing situation between several first driving wheels 22 and the first transmission shaft 23.

[0036] Please continue to refer to the appendix Figure 6 On both sides of the arc-shaped plate 21, a first extension arm 211 and a second extension arm 212 are respectively formed. The first extension arm 211 and the first driving wheel 22 are limited by a first groove 223 formed on both of them and a first protrusion 213 fitted into the first groove 223; the second extension arm 212 and the second driving wheel 24 are limited by a second groove 243 formed on both of them and a second protrusion 214 fitted into the second groove 243; Specifically, in this embodiment, the first protrusion 213 is formed at the lower end of the first extension arm 211, the first groove 223 is an annular groove, which is formed on the edge side of the first driving wheel 22. When the first driving wheel 22 rotates, the first groove 223 limits the first protrusion 213; the second protrusion 214 is formed at the lower end of the second extension arm 212, and the second groove 243 is also an annular groove, which is formed on the edge side of the second driving wheel 24. When the second driving wheel 24 rotates, the second groove 243 limits the second protrusion 214.

[0037] Please continue to refer to the appendix Figure 6 All the arc-shaped plates 21 are connected by a through hole 215 formed in the middle of the arc-shaped plate 21 and a shaft body 26 passing through the through hole 215, so that each arc-shaped plate 21 can have an angular displacement along the shaft body 26.

[0038] Please continue to refer to the appendix Figure 4 ~Appendix Figure 5 The shaft body 26, the first transmission shaft 23, and the second transmission shaft 25 are arranged in parallel with each other and are connected by a support frame 27. There are two support frames 27, which are respectively located on both sides of the grate 2. In order to adapt to the structure of the left side of the grate 2 being higher and the right side being lower, the left support frame 27 is as Figure 4 shown to be higher, and the right support frame 27 is as Figure 5 shown to be lower.

[0039] Please continue to refer to the appendix Figure 1 Both ends of the first transmission shaft 23 and the second transmission shaft 25 extend outside the furnace body 1 and are connected to the bearing seat 28 through bearings 29.

[0040] Please continue to refer to the appendix Figure 7 ~Appendix Figure 8 AppendixFigure 7 is a top view of the bearing and the bearing housing, attached Figure 8 is attached Figure 7 is a cross-sectional view taken along C-C. The shaft body 26, the first transmission shaft 23, and the second transmission shaft 25 are coaxially arranged with their respective corresponding bearings 29. An included angle a is formed between the axis L of the bearing 29 and the axis L' of the bearing housing 28, that is, the bearing 29 is coaxial with the three shaft members and not coaxial with the bearing housing 28. This is to adapt to the three inclined shaft members; After the first transmission shaft 23 and the second transmission shaft 25 extend outside the furnace body 1, through the transmission of the universal shaft, they are then driven by a motor to perform rotational operations.

[0041] Please refer to the attached Figure 9 which is attached Figure 3 is a cross-sectional view taken along D-D. The bearing housing 28 includes a base 281 and a top cover 282. A cylindrical groove seat 283 for placing the bearing 29 is formed between the base 281 and the top cover 282, and the cylindrical groove seat 283 is coaxially arranged with the bearing 29.

[0042] Please refer to the attached Figure 3 In the figure, a solid waste baffle 3 is provided on the side with a higher height of the grate 2. The side with a higher height of the grate 2 corresponds to the feed hopper 5 of the furnace body 1. The solid waste baffle 3 is used to block the material to prevent the solid waste from falling off the grate 2. A slag discharge plate 4 is provided on the side with a lower height. The slag discharge plate 4 is used to assist the slag after combustion to be transported away from the grate 2.

[0043] Other components of the incinerator for solid waste according to the embodiments of the present invention, such as the feed hopper, etc., and the operations are known to those of ordinary skill in the art and will not be described in detail here.

[0044] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A solid waste incinerator, comprising a furnace body and a grate disposed in the furnace body, characterized in that: The grate includes a plurality of arcuate plates hinged or rotatably connected relative to the furnace body, the concave surface of the arcuate plates is used to receive solid waste, the plurality of arcuate plates are arranged in parallel along the axial direction thereof, and the plurality of arcuate plates are arranged to decrease in height along the axial direction thereof, a first transmission wheel abutting against the arcuate plate is arranged on one side of each of the arcuate plates, each of the first transmission wheels is eccentrically connected to a first transmission shaft, the first transmission shaft extends along the arrangement direction of the arcuate plates, and a distance d from the axis of the first transmission shaft to each of the arcuate plates increases and decreases in sequence along the arrangement direction of the arcuate plates to form a cycle.

2. The solid waste incinerator according to claim 1, characterized in that: A second transmission wheel abutting against the arc plate is provided on the other side of each of the arc plates, and each of the second transmission wheels is eccentrically connected to a second transmission shaft, which also extends along the arrangement direction of the arc plates. The distance d′ from the axis of the second transmission shaft to each of the arc plates decreases and then increases in sequence along the arrangement direction of the arc plates to form a cycle.

3. The solid waste incinerator according to claim 2, characterized in that: A first shaft hole is eccentrically opened on the first transmission wheel, and first teeth are formed on the inner wall of the first shaft hole. The first transmission shaft is a gear shaft, and the first transmission shaft passes through all the first transmission wheels in sequence, and the first teeth on adjacent first transmission wheels are meshed with the first transmission shaft step by step; A second shaft hole is eccentrically opened on the second transmission wheel, and second teeth are formed on the inner wall of the second shaft hole. The second transmission shaft is a gear shaft, and the second transmission shaft passes through all the second transmission wheels in sequence. The second teeth on adjacent second transmission wheels are meshed with the second transmission shafts step by step.

4. The solid waste incinerator according to claim 2 or 3, characterized in that: A first extension arm and a second extension arm are respectively formed on both sides of the arc plate, and the first extension arm and the first transmission wheel are limited by a first groove body formed on both and a first protrusion inserted into the first groove body; the second extension arm and the second transmission wheel are limited by a second groove body formed on both and a second protrusion inserted into the second groove body.

5. The solid waste incinerator according to claim 2 or 3, characterized in that: All the arc-shaped plates are connected via a through hole opened in the middle of the arc-shaped plate and a shaft body penetrating the through hole, so that each of the arc-shaped plates can undergo angular displacement along the shaft body.

6. The solid waste incinerator according to claim 5, characterized in that: The shaft body, the first transmission shaft and the second transmission shaft are arranged in parallel and connected by a support frame.

7. The solid waste incinerator according to claim 2 or 3, characterized in that: Both ends of the first transmission shaft and the second transmission shaft extend out of the furnace body and are connected to the bearing seat via bearings.

8. The solid waste incinerator according to claim 7, characterized in that: The shaft body, the first transmission shaft, and the second transmission shaft are respectively coaxially arranged with the corresponding bearings, and an angle is formed between the axis of the bearing and the axis of the bearing seat.

9. The solid waste incinerator according to claim 8, characterized in that: The bearing seat comprises a base and a top cover, wherein a cylindrical groove seat for the bearing to be placed is formed between the base and the top cover, and the cylindrical groove seat is coaxial with the bearing.

10. The solid waste incinerator according to any one of claims 1 to 3, characterized in that: A solid waste baffle is arranged on the side of the grate with a higher height, and a slag discharge plate is arranged on the side of the grate with a lower height.

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