A stepped precombustion structure

Abstract

The application discloses a stepped pre-combustion structure and relates to the technical field of hazardous waste treatment equipment, which comprises a machine body, stepped platforms, a tertiary air pipe, a pushing device and an auxiliary device. The auxiliary device is arranged in a combustion chamber below a feeding pipe. The auxiliary device comprises a cover body and a plurality of intercepting components. The cover body has a cavity inside. The cavity forms an inlet and an outlet on the cover body. The cavity is communicated with the feeding pipe through the inlet, and the outlet faces the first platform. The intercepting components are arranged in the cavity. The intercepting components can intercept hazardous waste, and the intercepting components form a plurality of accommodation spaces for the hazardous waste to pass through in the cavity. The application can reduce the influence of hazardous waste feeding on hazardous waste combustion, make the hazardous waste combustion more sufficient, and improve the environmental protection efficiency.

Description

Technical Field

[0001] This application relates to the technical field of hazardous waste treatment equipment, and in particular to a stepped pre-combustion structure. Background Technology

[0002] Hazardous waste treatment refers to the process of rendering hazardous waste harmless, reducing its volume, and recovering its resources. It generally includes methods such as physical treatment, chemical treatment, biological treatment, thermal treatment, and secure landfill. Regardless of the method used, relevant laws, regulations, and standards must be followed to ensure the safety and effectiveness of hazardous waste treatment. Simultaneously, it is necessary to strengthen source control and classification management of hazardous waste to reduce its generation and environmental impact.

[0003] Existing common hazardous waste treatment methods, such as cement kiln hazardous waste treatment and municipal solid waste treatment, all utilize stepped pre-combustion structures (i.e., stepped pre-combustion furnaces). Stepped pre-combustion furnaces offer advantages such as complete combustion, high thermal efficiency, good environmental performance, wide applicability, simple operation, compact structure, and high reliability. They can centrally treat cement kiln hazardous waste and municipal solid waste, and can fully utilize the calorific value of solid fossil fuels in hazardous waste (or the calorific value of biomass fuels in municipal solid waste), achieving harmless, resource-based, and reduced-volume disposal of solid and hazardous waste.

[0004] However, the combustion efficiency of hazardous waste is related to its contact with hot air. Uniform contact between hazardous waste and hot air is essential for more complete combustion, thus improving the effectiveness of hazardous waste heat treatment and enhancing environmental efficiency. In existing stepped pre-combustion structures, new hazardous waste is continuously fed in while existing waste is burning. When the amount of hazardous waste fed in is large, the newly added waste falling on top of the burning waste will affect its normal combustion, and the waste is prone to accumulation, reducing its contact with hot air and consequently affecting the completeness of combustion.

[0005] Therefore, it is urgent to optimize and improve the existing stepped pre-combustion structure. Summary of the Invention

[0006] This application provides a stepped pre-combustion structure that can reduce the impact of hazardous waste feed on hazardous waste combustion and enable more complete combustion of hazardous waste, thereby improving environmental protection efficiency.

[0007] This application provides a stepped pre-combustion structure, which adopts the following technical solution:

[0008] A stepped pre-combustion structure includes a body, a stepped platform, a tertiary air duct, a material pushing device, and auxiliary devices;

[0009] The machine body has a combustion chamber inside, and the stepped platform is set on the machine body and located in the combustion chamber; the tertiary air duct is set on one side of the machine body, and the tertiary air duct is connected to an air inlet pipe that communicates with the bottom of the combustion chamber; the top of the machine body is connected to an air outlet pipe and several feed pipes, and both the air outlet pipe and the feed pipes communicate with the combustion chamber; the bottom of the machine body has a discharge port, which communicates with the combustion chamber and is located on one side of the stepped platform;

[0010] The stepped platform includes a first platform and several second platforms. The first platform is located below several feed pipes, and the several second platforms are all located on the side of the first platform near the discharge port, and the several second platforms form a stepped structure.

[0011] The pushing device includes a first air cannon and a plurality of second air cannons. The first air cannon corresponds to the first platform and can blow the hazardous waste on the first platform onto a plurality of second platforms. The plurality of second air cannons correspond one-to-one with a plurality of second platforms and can blow the hazardous waste on the corresponding second platform onto other second platforms below.

[0012] The auxiliary device is disposed in the combustion chamber and located below the feed pipe. The auxiliary device includes a cover and several interception components. The cover has a cavity inside, and the cavity forms an inlet and an outlet on the cover. The cavity communicates with several feed pipes through the inlet, and the outlet faces the first platform.

[0013] Several interception components are disposed in the cavity, and the interception components are capable of intercepting hazardous waste, and the interception components form several clearance spaces in the cavity for hazardous waste to pass through.

[0014] By adopting the above technical solution, when new hazardous waste is fed in, several interception components will intercept it, reducing its falling speed and thus minimizing the impact of new hazardous waste falling onto the burning hazardous waste, which would hinder its continued combustion. Furthermore, the tertiary air flowing from bottom to top through the combustion chamber allows the hazardous waste to tumble as it moves down the stepped platforms, ensuring more thorough contact between the waste and hot air, resulting in more complete combustion. Additionally, as the hazardous waste passes through the cavity, the tertiary air enters, causing lighter (relatively smaller) hazardous waste to fall at a slower speed while heavier (relatively larger) hazardous waste falls at a faster speed. This ensures that the heavier hazardous waste primarily falls onto the first platform, while the lighter hazardous waste stacks on top of the heavier waste on the first platform or falls onto several second platforms. This allows different types of hazardous waste to burn at appropriate locations on the stepped platforms, improving combustion efficiency and thus enhancing environmental performance.

[0015] Optionally, the interception component includes a plurality of interceptors spaced apart, and the space between adjacent interceptors on the same interception component is the clearance space.

[0016] By adopting the above technical solution, during the process of hazardous waste passing through the cavity, the hazardous waste in contact with the interceptor is intercepted, and its falling speed is slowed down before it passes through the clearance space on one side of the interceptor. This reduces the degree to which the hazardous waste feeding is affected, thereby reducing the probability of the hazardous waste clogging in the cavity after being intercepted by the interceptor. At the same time, if there is any adhered hazardous waste in the feeding, the impact after it comes into contact with the interceptor can help separate it, making it easier for it to burn more completely in the future.

[0017] Optionally, the clearance space on the interceptor component closer to the first platform is greater than the clearance space on the interceptor component farther from the first platform.

[0018] By adopting the above technical solution, the size of the clearance space on several interception components gradually decreases with the direction of hazardous waste feeding, which can gradually enhance the interception effect of the interception components on hazardous waste, thereby gradually reducing the speed at which hazardous waste falls. This can not only improve the effect of the interception components in slowing down the falling speed of hazardous waste, but also further reduce the probability of the interception components affecting the feeding of hazardous waste and causing blockage.

[0019] Optionally, the clearance space near the air outlet duct is smaller than the clearance space on the same interceptor assembly away from the air outlet duct.

[0020] By adopting the above technical solution, hazardous waste intercepted by the interceptor has a higher probability of passing through the clearance space on the side away from the outlet duct after being intercepted. This allows the hazardous waste (mainly heavier hazardous waste) falling onto the first platform to form a slope in the same direction as the stepped platform. This facilitates the subsequent hazardous waste (mainly lighter hazardous waste) to fall onto several second platforms along the slope, thereby enabling different types of hazardous waste to be burned at appropriate locations on the stepped platforms, thus improving the combustion effect of the hazardous waste.

[0021] Optionally, the interception component (52) further includes an active frame (521), which is movably connected to the cover (51) and surrounds a plurality of the interception elements (522).

[0022] The auxiliary device also includes a drive assembly disposed on the body, and the drive assembly is capable of driving the movable frame to reciprocate relative to the cover.

[0023] By adopting the above technical solution, during the process of hazardous waste being fed through the cavity, the driving component drives the movable frame to reciprocate, which can change the position of several intercepting components and several clearance spaces in the cavity, thereby further improving the interception effect of the intercepting components, and thus improving the effect of reducing the impact of new hazardous waste entering the combustion of hazardous waste; at the same time, it can accelerate the feeding of hazardous waste stuck on the intercepting components, thereby reducing the probability of hazardous waste forming blockages in the cavity; and it can further help separate the adhering hazardous waste, thereby contributing to more complete combustion of the hazardous waste in the later stage.

[0024] Optionally, the drive assembly includes a housing, an air blowing pipe, several impellers, and several cams;

[0025] The housing is disposed in the combustion chamber and located on the side of the cover opposite to the air outlet pipe. The housing has a channel inside, and one end of the movable frame passes through the housing and is located in the channel.

[0026] One end of the air blowing pipe is connected to the channel, and the other end of the air blowing pipe is connected to the first air cannon. The air blowing pipe and the first air cannon are supplied with air from the same air source.

[0027] The impeller is located in the channel, and several impellers are rotatably connected to several movable frames respectively. After the air blowing pipe blows air, several impellers can rotate with the airflow.

[0028] The cams are connected to the impellers respectively. The housing has a plurality of movable slots for the cams to move. The cams rotate with the impellers. When the cams rotate, they abut against the wall of the movable slots and can drive the movable frame to reciprocate relative to the cover.

[0029] By adopting the above technical solution, the air blowing pipe blows air into the channel to form an airflow, which drives the impeller to rotate. The cam rotates with the impeller. During the rotation of the cam, it is restricted by the movable groove, which drives the movable frame to reciprocate. This makes the process of the movable frame reciprocating more convenient, and at the same time, it makes the movement of different movable frames more random. The different movement states of different movable frames can further facilitate the loosening and falling of the blocked hazardous waste.

[0030] Optionally, the first air cannon operates periodically, and the air blowing pipe stops blowing air when the first air cannon is operating, and the air blowing pipe blows air when the first air cannon stops operating.

[0031] By adopting the above technical solution, when there is too much hazardous waste on the first platform, the first air cannon needs to work to disperse it, so that some of the hazardous waste falls to the second platform for combustion, thereby improving the overall combustion efficiency. At this time, the air blowing pipe stops blowing air, which can slow down the speed at which new hazardous waste falls, helping the first air cannon to reduce the amount of hazardous waste on the first platform. When the first air cannon stops working, it means that the amount of hazardous waste on the first platform is still within the range of complete combustion. At this time, the air blowing pipe accelerates the falling of new hazardous waste, which can accelerate the combustion efficiency of the hazardous waste, thereby improving the overall combustion efficiency.

[0032] Optionally, the top of the machine body has two feed pipes connected to it, one feed pipe for solid hazardous waste and the other feed pipe for liquid hazardous waste.

[0033] By adopting the above technical solution, solid hazardous waste and liquid hazardous waste are fed into the cavity at the same time. After the solid hazardous waste and liquid hazardous waste are mixed, the friction between the solid hazardous waste and the interceptor and the cover can be reduced, thereby further reducing the probability of hazardous waste getting stuck or blocked in the cavity.

[0034] Optionally, it also includes a baffle, which is disposed at the bottom of the combustion chamber and located between the air inlet pipe and the discharge port.

[0035] By adopting the above technical solution, the baffle can effectively reduce the amount of hazardous waste entering the air inlet pipe from the combustion chamber, thereby reducing the probability that the normal operation of the tertiary air duct will be affected by the entry of hazardous waste into the air inlet pipe.

[0036] Optionally, the top of the baffle has a guide portion for guiding airflow, and the inner wall of the combustion chamber above the baffle has a guide surface. The inclination direction of the guide surface is the same as the inclination direction of the stepped platform and the inclination angle is equal. The guide portion can guide the airflow to flow along the guide surface.

[0037] By adopting the above technical solution, after the tertiary air enters the combustion chamber through the air inlet pipe, it will flow upward by brushing over the stepped platform under the guidance of the guide section and guide surface, so that the hazardous waste on the stepped platform can come into more complete contact with the hot air, thereby enabling more complete combustion and further improving the combustion effect of hazardous waste.

[0038] In summary, this application includes at least one of the following beneficial effects:

[0039] 1. It can slow down the feeding speed of hazardous waste with minimal impact on the normal feeding of hazardous waste, thereby reducing the impact of the feeding process on the normal combustion of hazardous waste and enabling the hazardous waste to burn more completely.

[0040] 2. It can reduce the probability of hazardous waste getting stuck or blocked in the cavity, which would affect the feeding of hazardous waste. At the same time, it can help separate the adhering hazardous waste, which will help it to burn completely on the stepped platform later.

[0041] 3. It enables hazardous wastes of different weights and sizes to be burned at appropriate locations on the stepped platform, improving the combustion efficiency of hazardous waste and thus enhancing environmental protection efficiency;

[0042] 4. It enables more uniform and sufficient contact between hazardous waste burning on the stepped platform and tertiary air, thereby further improving the combustion efficiency of hazardous waste and making it burn more completely. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a stepped pre-combustion structure according to an embodiment of this application;

[0044] Figure 2 This is a schematic diagram of the internal structure of a stepped pre-combustion structure according to an embodiment of this application;

[0045] Figure 3 This is a cross-sectional view of a stepped pre-combustion structure according to an embodiment of this application;

[0046] Figure 4 This is a cross-sectional view of the auxiliary device in an embodiment of this application.

[0047] Explanation of reference numerals in the attached drawings: 1. Body; 11. Combustion chamber; 111. Guide surface; 12. Feed pipe; 13. Air inlet pipe; 14. Air outlet pipe; 15. Discharge port; 16. Window; 2. Stepped platform; 21. First platform; 22. Second platform; 3. Tertiary air pipe; 4. Pushing device; 41. First air cannon; 42. Second air cannon; 5. Auxiliary device; 51. Cover; 511. Cavity; 5111. Inlet; 5112. Outlet; 512. Clearance space; 52. Interception component; 521. Movable frame; 522. Interception piece; 53. Drive component; 531. Shell; 5311. Channel; 5312. Movable groove; 532. Impeller; 533. Cam; 534. Air blowing pipe; 6. Material stop; 61. Guide part; 7. Cover. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0049] This application discloses a stepped pre-combustion structure for the combustion treatment of hazardous waste, capable of simultaneously treating both solid and liquid hazardous waste. In this embodiment, the liquid hazardous waste also includes highly fluid hazardous waste.

[0050] Reference Figure 1 and Figure 2The stepped pre-combustion structure includes a body 1, a stepped platform 2, a tertiary air duct 3, a feeding device 4, and an auxiliary device 5. The body 1 provides space for hazardous waste combustion, reducing its impact on the external environment. The stepped platform 2 receives the hazardous waste, allowing it to burn completely. The tertiary air duct 3 blows in tertiary air, allowing the hazardous waste to contact and burn with the tertiary air (hot air). The feeding device 4 moves the hazardous waste on the stepped platform 2 downwards along the steps, making its distribution more even and thus ensuring more complete combustion. The auxiliary device 5 assists in feeding the hazardous waste, ensuring it falls onto the stepped platform 2 at a more suitable position, further enhancing combustion.

[0051] The main body 1 has a rectangular parallelepiped structure, and its interior contains a combustion chamber 11 that provides combustion space for hazardous waste. Several feed pipes 12 are connected to the top of the main body 1, and these feed pipes 12 communicate with the top of the combustion chamber 11. In this embodiment, it is preferable that the feed pipes 12 feed hazardous waste vertically downwards, and preferably, two feed pipes 12 are connected to the top of the main body, distributed along the width of the main body 1. One feed pipe 12 is used for feeding solid hazardous waste, and the other feed pipe 12 is used for feeding liquid hazardous waste.

[0052] The stepped platform 2 has a stepped structure and is fixedly installed in the combustion chamber 11. The bottom plane of the stepped platform 2 is in contact with the bottom wall of the combustion chamber 11, and one side plane of the stepped platform 2 is in contact with one side wall of the combustion chamber 11 along the length of the body 1.

[0053] The tertiary air duct 3 is fixedly installed on one side of the body 1. In this embodiment, the tertiary air duct 3 is preferably located below the body 1. An air inlet pipe 13 is connected to one side of the tertiary air duct 3 and is fixedly connected to the body 1 and communicates with the combustion chamber 11. Preferably, the air inlet pipe 13 blows tertiary air into the bottom of the combustion chamber 11 in a vertically upward direction. Preferably, the position where the combustion chamber 11 communicates with the air inlet pipe 13 is located on one side of the stepped surface of the stepped platform 2.

[0054] The top of the machine body 1 is also externally connected to an air outlet pipe 14 for the tertiary air to leave the combustion chamber 11, and the air outlet pipe 14 communicates with the top of the combustion chamber 11. In this embodiment, it is preferable that the air outlet pipe 14 causes the tertiary air to leave the combustion chamber 11 in a vertically upward direction, and it is also preferable that the air outlet pipe 14 is located on one side of the feed pipe 12.

[0055] The stepped platform 2 includes a first platform 21 and several second platforms 22. The first platform 21 is located at the top of the stepped platform 2 and below the two feed pipes 12. The several second platforms 22 are all located on the side of the stepped platform 2 closest to the air inlet pipe. The end of the first platform 21 closest to the air inlet pipe and the several second platforms 22 together form a stepped structure, and the end face area of ​​the top of the first platform 21 is larger than the end face area of ​​the top of the second platform 22. In this embodiment, the stepped platform 2 preferably includes three second platforms 22; in other embodiments, the stepped platform 2 may include more or fewer second platforms 22.

[0056] The feeding device 4 includes a first air cannon 41 and several second air cannons 42. The first air cannon 41 is used to disperse hazardous waste located on the top end face of the first platform 21. Each of the several second air cannons 42 corresponds to one of the several second platforms 22 and is used to disperse hazardous waste located on the top end face of the corresponding second platform 22. Therefore, the feeding device 4 includes a total of three second air cannons 42. In this embodiment, preferably, the top end face of the first platform 21 and the top end face of the second platform 22 are both horizontal planes, and preferably, both the first air cannon 41 and the second air cannons 42 disperse the hazardous waste along the length of the machine body 1 towards the air inlet pipe 13.

[0057] Furthermore, preferably, the first air cannon 41 is fixedly installed inside the body 1, and several second air cannons 42 are fixedly installed inside the stepped platform 2; and preferably, the first air cannon 41 and several second air cannons 42 are connected to the same air source device. In this embodiment, preferably, the first air cannon 41 and the second air cannon 42 are both pulse air cannons. Since pulse air cannons are common existing technology, the first air cannon 41 and the second air cannon 42 will not be described in detail here, and the first air cannon 41 and the second air cannon 42 are only briefly shown in the accompanying drawings; and preferably, the first air cannon 41 and the second air cannon 42 are both controlled by a program to disperse the hazardous waste on the stepped platform 2 in a periodic manner.

[0058] When the first air cannon 41 operates, it can disperse the hazardous waste located on the top end face of the first platform 21 and cause all hazardous waste, or the lighter hazardous waste, to fall onto the top end faces of the three second platforms 22. When the second air cannon 42 operates, it can disperse the hazardous waste located on the top end face of the corresponding second platform 22 and cause all hazardous waste, or the lighter hazardous waste, to fall onto the top end faces of the other second platforms 22 below. In this embodiment, preferably, the dispersion effect of the first air cannon 41 and the second air cannon 42 on the hazardous waste is adjustable (thus determining whether the first air cannon 41 and the second air cannon 42 disperse all the hazardous waste or disperse the lighter hazardous waste).

[0059] The bottom of the machine body 1 is also provided with a discharge port 15 for discharging the ash residue left after the complete combustion of hazardous waste. The discharge port 15 is located between the air inlet pipe 13 and the stepped platform 2. In actual application, the bottom of the machine body 1 will be connected to an external pipe at the discharge port 15, so that the ash residue can enter the discharge port 15 and move along the pipe for collection, facilitating subsequent harmless treatment. In this embodiment, since the above structure is common prior art in the field, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.

[0060] Hazardous waste on the stepped platform 2 falls to the bottom of the combustion chamber 11 under the action of the pushing device 4, and can eventually be discharged through the discharge port 15.

[0061] Furthermore, a baffle 6 is fixedly installed at the bottom of the combustion chamber 11 of the main body 1. The baffle 6 is installed vertically between the air inlet pipe 13 and the discharge port 15. The baffle 6 separates the space above the air inlet pipe 13 and the space above the discharge port 15 in the combustion chamber 11, thereby preventing hazardous waste from falling to the bottom of the combustion chamber 11 and entering the air inlet pipe 13.

[0062] Furthermore, the top of the baffle 6 also has a guide portion 61 for guiding the direction of the tertiary airflow in the combustion chamber 11. In this embodiment, the trajectory of the guide portion 61 is preferably an arc, and the arc trajectory extends in the direction close to the stepped platform 2.

[0063] At this time, the tertiary air entering the combustion chamber 11 through the air inlet pipe 13 can change direction along the baffle 6, so that the flow direction of the tertiary air after leaving the baffle 6 is the same as the tilt direction of the stepped platform 2, and can pass through one side of the stepped surface of the stepped platform 2, and fully contact the hazardous waste located on the stepped platform 2, so that the hazardous waste on the stepped platform 2 can be fully burned.

[0064] Furthermore, the body 1 has a guide surface 111 on the inner wall of the combustion chamber 11 for guiding the flow of tertiary air. The guide surface 111 is located above the baffle 6 and is opposite to the stepped surface of the stepped platform 2. The guide surface 111 is an inclined surface and the inclination angle of the guide surface 111 is equal to the inclination angle of the stepped platform 2.

[0065] In addition, the two ends of the guide surface 111 along the inclined direction have arc segments where they meet other inner walls of the combustion chamber 11, which facilitates the upward flow of tertiary air along the guide surface 111 after entering the combustion chamber 11 through the air inlet pipe 13, reducing the loss of tertiary air force during this process.

[0066] At this time, the tertiary air entering the combustion chamber 11 through the air inlet pipe 13 will continue to pass through one side of the stepped surface of the stepped platform 2 under the guidance of the guide section 61, further making full contact with the hazardous waste located on the stepped platform 2, and further enabling the hazardous waste on the stepped platform 2 to be fully combusted.

[0067] Several windows 16 communicating with the combustion chamber 11 are provided on one side of the machine body 1 in the width direction. The windows 16 can be used to observe the combustion of waste on the stepped platform 2, and also to observe the distribution of ash at the bottom of the combustion chamber 11. At the same time, they can also facilitate the entry of personnel for maintenance, material collection, cleaning, etc. In this embodiment, preferably, a total of five windows 16 are provided on the machine body 1. The five windows 16 are located on one side of the first platform 21, the three second platforms 22, and the discharge port 15, respectively. Among them, the window 16 that allows personnel to enter is located on the side of the discharge port 15.

[0068] Furthermore, preferably, each of the five windows 16 of the body 1 is equipped with a cover 7 that can control the opening and closing of the windows 16. In this embodiment, the cover 7 is preferably movably installed on the body 1 by means of a rotatable connection. Since the rotatable cover 7 is a common prior art, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.

[0069] Reference Figure 3 and Figure 4 The auxiliary device 5 includes a cover 51 and several interception components 52.

[0070] The hood 51 is fixedly installed on the top of the combustion chamber 11, below the two feed pipes 12, and above the first platform 21. The hood 51 is fixedly connected to the inner wall of the top of the combustion chamber 11. The interior of the hood 51 has a cavity 511. The cavity 511 forms an inlet 5111 at the top of the hood 51 for hazardous waste to enter, and an outlet 5112 at the bottom of the cavity 51 for hazardous waste to leave. There is a gap between the outlet 5112 and the first platform 21 for hazardous waste to accumulate on the first platform 21.

[0071] Several interception components 52 are installed in the cavity 511, and preferably the interception components 52 are evenly distributed along the vertical direction. In this embodiment, the auxiliary device 5 preferably includes four interception components 52. During the process of the hazardous waste being intercepted by the interception components 52 in the cavity 511, it can also come into contact with tertiary air (i.e., hot air), so that the hazardous waste can be dried.

[0072] The interception component 52 includes an active frame 521 and several interceptors 522.

[0073] The movable frame 521 has a rectangular frame structure. The movable frame 521 is installed in the cavity 511 in a horizontal position, and the movable frame 521 is movably connected to the cover 51 in a direction parallel to the length of the body 1.

[0074] The interceptor 522 has a circular rod-shaped structure. The interior of the movable frame 521 has space for installing several interceptors 522. The interceptors 522 are installed in the space in the middle of the movable frame 521 with their axes parallel to the width direction of the body 1. That is, both ends of the interceptor 522 are fixedly connected to the movable frame 521 in the axial direction. The movable frame 521 surrounds several interceptors 522.

[0075] Several interceptors 522 are distributed at intervals along the length of the body 1 on the movable frame 521. A clearance space 512 for hazardous waste to pass through is formed between adjacent interceptors 522 on the same movable frame 521, and a clearance space 512 is also formed between the interceptors 522 located at the edge of the movable frame 521 and the movable frame 521.

[0076] The interceptors 522 have a weaker interception effect on liquid hazardous waste. After entering the combustion chamber 11 through the feed pipe 12, the liquid hazardous waste will fall onto the first platform 21 through the cavity 511. The interceptors 522 have a stronger interception effect on solid hazardous waste. After entering the combustion chamber 11 through the feed pipe 12, the solid hazardous waste will collide with the interceptors 522 during its passage through the cavity 511 and pass through the clearance space 512 on one side of the interceptor 522. After this cycle, it will leave the cavity 511 and fall onto the first platform 21. This can slow down the feeding of hazardous waste and reduce the impact of the feeding of hazardous waste on the normal combustion of hazardous waste on the first platform 21.

[0077] Furthermore, it is preferable that the sizes of the plurality of clearance spaces 512 on the same interception component 52 are different, and it is also preferable that the sizes of the plurality of clearance spaces 512 on the same interception component 52 gradually increase along the length direction of the body 1 in the direction away from the air outlet duct 14.

[0078] This design ensures that after the hazardous waste enters the cavity 511, the heavier (and relatively larger) pieces will move away from the exhaust duct 14 as they fall, landing on the first platform 21 away from the second platform 22. The lighter (and relatively smaller) pieces will move towards the exhaust duct 14 as they fall, landing on the first platform 21 closer to the second platform 22. This facilitates the lighter hazardous waste falling directly onto the second platform 22, and also allows it to be blown onto the second platform 22 by the first air cannon 41.

[0079] Furthermore, after hazardous waste collides with the interceptor 522, it has a greater probability of passing through the larger clearance space 512 adjacent to the interceptor 522, thus allowing the hazardous waste to accumulate on the first platform 21 and form a slope with the same inclination as the stepped platform 2. At the same time, under the influence of the tertiary wind, the heavier hazardous waste will fall onto the first platform 21 faster than the lighter hazardous waste, thus facilitating the lighter hazardous waste to roll down the slope of the first platform 21 onto the second platform 22. This allows waste of different weights and sizes to be distributed more evenly and appropriately on the stepped platform 2, resulting in better overall combustion of the waste.

[0080] Furthermore, it is preferable that the four interception components 52 have different interception effects on hazardous waste, and the interception effect of the four interception components 52 on hazardous waste gradually increases along the movement direction of hazardous waste in cavity 511.

[0081] The minimum clearance space 512 on the interceptor component 52 near the feed pipe 12 is greater than the minimum clearance space 512 on the interceptor component 52 near the first platform 21, and the maximum clearance space 512 on the interceptor component 52 near the feed pipe 12 is greater than the maximum clearance space 512 on the interceptor component 52 near the first platform 21. In this embodiment, it is preferable that the number of interceptors 522 on the interceptor component 52 increases sequentially from top to bottom to achieve the above-mentioned effect.

[0082] Furthermore, the auxiliary device 5 includes a drive assembly 53 for driving the movement of a plurality of movable frames 521.

[0083] The drive assembly 53 includes a housing 531, several impellers 532, several cams 533, and an air blowing pipe 534.

[0084] The housing 531 is fixedly installed on the top of the combustion chamber 11 and is located on the side of the cover 51 away from the air outlet duct 14. One side of the housing 531 is fixedly connected to the inner wall of the combustion chamber 11 along the length direction of the body 1 away from the guide surface 111, and there is a gap between both sides of the housing 531 and the inner walls of both sides of the combustion chamber 11 along the width direction of the body 1.

[0085] The interior of the housing 531 has a channel 5311. The end of the movable frame 521 near the housing 531 passes through the housing 531 and is located in the channel 5311. The movable frame 521 will also move relative to the housing 531 during the movement of the cover 51.

[0086] Each impeller 532 corresponds to one of the interception components 52. In this embodiment, the drive component 53 preferably includes four impellers 532. The four impellers 532 are respectively installed at one end of the four movable frames 521 located in the channel 5311. The impellers 532 are rotatably connected to the movable frames 521, and the rotation axis of the impellers 532 is parallel to the width direction of the body 1.

[0087] A number of cams 533 correspond one-to-one with a number of impellers 532. Accordingly, in this embodiment, the drive assembly 53 preferably includes four cams 533. The four cams 533 are coaxially fixedly mounted on the four impellers 532, and the four cams 533 are located on the same side of the axis of the four impellers 532.

[0088] The housing 531 has several movable grooves 5312 on one inner wall of the channel 5311, which allow the cam 533 to move as the impeller 532 rotates, and the movable grooves 5312 communicate with the channel 5311. Preferably, the movable grooves 5312 are cuboid in shape, and the dimension of the movable grooves 5312 along the length of the body 1 is less than twice the maximum radius of the cam 533, and the dimension of the movable grooves 5312 along the height of the body 1 is greater than twice the maximum radius of the cam 533.

[0089] As the cam 533 moves with the impeller 532, the maximum protrusion of the cam 533 maintains a distance from the two side walls of the movable groove 5312 along the height direction of the body 1, and the maximum protrusion of the cam 533 repeatedly contacts the two side walls of the movable groove 5312 along the length direction of the body 1. While the cam 533 is moving, its maximum protrusion remains in contact with one side wall of the movable groove 5312 along the length direction of the body 1. The contact position between the cam 533 and this groove wall changes continuously. At this time, the movable frame 521 will reciprocate under the force between the cam 533 and the housing 531.

[0090] The air blowing pipe 534 is fixedly installed on the side of the machine body 1 near the housing 531. One end of the air blowing pipe 534 passes through the machine body 1 and the housing 531 and communicates with the channel 5311, and the air blowing pipe 534 communicates with the bottom of the channel 5311; the other end of the air blowing pipe 534 is connected to the corresponding air source device. In this embodiment, it is preferable that the air blowing pipe 534 and the pushing device 4 share the same air source device. Since the air source device used in conjunction with the pulse air cannon is prior art in the field, it will not be described in detail here, and its representation is omitted in the accompanying drawings.

[0091] The channel 5311 forms an opening at the top of the housing 531. There is a gap between the top of the housing 531 and the inner wall of the top of the combustion chamber 11. The blowing pipe 534 can continuously blow air into the channel 5311 to form an airflow. The gas flows vertically upward in the channel 5311. When the gas passes through the impeller 532, it can drive the impeller 532 to rotate relative to the movable frame 521. After the gas is blown out from the opening, it will contact the inner wall of the top of the combustion chamber 11 and change its flow direction to flow downward along both sides of the housing 531.

[0092] After the hazardous waste falls onto the first platform 21 through the cover 51, since the shell 531 is located above the end of the first platform 21 away from the second platform 22, less hazardous waste falls onto the first platform 21 near the air port of the first air cannon 41. Furthermore, the gas flowing out from the shell 531 can also be blown onto the first platform 21, reducing the probability of hazardous waste accumulating on the first platform 21 near the air port of the first air cannon 41. This reduces the probability of hazardous waste blocking the air port of the first air cannon 41, making it easier for the first air cannon 41 to blow the hazardous waste off the first platform 21.

[0093] Furthermore, it is preferable that the airflow in channel 5311 drives the four impellers 532 to rotate in the same direction. In other embodiments, a protective cover can be installed on the movable frame 521 to partially insulate the impellers 532, so that the impellers 532 are locally subjected to the force of the airflow to achieve the above effect, thereby improving the reliability of the above effect.

[0094] During the blowing process of the air blowing pipe 534, it can drive the four movable frames 521 to reciprocate, which can speed up the speed of hazardous waste passing through the cavity 511, reduce the probability of hazardous waste getting stuck or blocked in the cavity 511, and help separate the hazardous waste adhering in the cavity 511.

[0095] Furthermore, it is preferable that the air blowing pipe 534 and the first air cannon 41 work in coordination. The first air cannon 41 operates periodically under program control. During the operation of the first air cannon 41, the air blowing pipe 534 stops blowing air, at which time the speed of hazardous waste passing through the cavity 511 slows down, which can reduce the impact of new hazardous waste falling onto the first platform 21 during the process of the first air cannon 41 dispersing the hazardous waste on the first platform 21. When the first air cannon 41 finishes operating and enters a standby state, the air blowing pipe 534 starts blowing air into the channel 5311, driving the four movable frames 521 to move, accelerating the speed of hazardous waste passing through the cavity 511, and facilitating the hazardous waste to fall onto the stepped platform 2 and burn at a suitable position on the stepped platform 2. In this embodiment, since the above-mentioned functions are common existing technologies in program control, their principles will not be described in detail here.

[0096] The implementation principle of a stepped pre-combustion structure in this application is as follows:

[0097] The tertiary air continuously blows into the combustion chamber 11, contacting the hazardous waste and causing it to burn. After being fed into the cavity 511, the hazardous waste is intercepted by multiple interception components 52, slowing its descent onto the stepped platform 2. This reduces the impact of its descent on the normal combustion of the hazardous waste on the stepped platform 2, allowing for more complete combustion. Furthermore, the hazardous waste is positioned appropriately on the stepped platform 2 according to its mass and size. Larger hazardous waste (which is easier to burn) burns on the first platform 21, where the more spacious area and greater distance from the tertiary air inlet are more suitable for combustion. Smaller hazardous waste (which is more difficult to burn) burns on the second platform 22, where a suitable space and closer proximity to the tertiary air inlet are more suitable for combustion, thus ensuring complete combustion and improving the efficiency and effectiveness of the hazardous waste combustion.

[0098] The pushing device 4 blows off the excess hazardous waste and the ash produced after the hazardous waste is burned off the stepped platform 2, so that the excess hazardous waste falls to the next step and the ash is discharged through the discharge port 15.

[0099] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stepped pre-combustion structure, characterized in that, It includes the main body (1), the stepped platform (2), the tertiary air duct (3), the material pushing device (4), and the auxiliary device (5); The machine body (1) has a combustion chamber (11) inside, and the stepped platform (2) is set on the machine body (1) and located in the combustion chamber (11); the tertiary air duct (3) is set on one side of the machine body (1), and the tertiary air duct (3) is connected to an air inlet pipe (13) which communicates with the bottom of the combustion chamber (11); the top of the machine body (1) is connected to an air outlet pipe (14) and several feed pipes (12), and the air outlet pipe (14) and the feed pipes (12) are both connected to the combustion chamber (11); the bottom of the machine body (1) is provided with a discharge port (15), which communicates with the combustion chamber (11) and is located on one side of the stepped platform (2); the air outlet pipe (14) is located on the side of the feed pipe (12) close to the discharge port (15); The stepped platform (2) includes a first platform (21) and a plurality of second platforms (22). The first platform (21) is located below a plurality of feed pipes (12). The plurality of second platforms (22) are all located on the side of the first platform (21) near the discharge port (15), and the plurality of second platforms (22) form a stepped structure. The pushing device (4) includes a first air cannon (41) and a plurality of second air cannons (42). The first air cannon (41) corresponds to the first platform (21) and can blow the hazardous waste on the first platform (21) onto a plurality of second platforms (22). The plurality of second air cannons (42) correspond one-to-one with a plurality of second platforms (22) and can blow the hazardous waste on the corresponding second platform (22) onto other second platforms (22) below. The auxiliary device (5) is disposed in the combustion chamber (11) and located below the feed pipe (12). The auxiliary device (5) includes a cover (51) and a plurality of interception components (52). The cover (51) has a cavity (511) inside. The cavity (511) forms an inlet (5111) and an outlet (5112) on the cover (51). The cavity (511) communicates with the plurality of feed pipes (12) through the inlet (5111), and the outlet (5112) faces the first platform (21). Several interception components (52) are disposed in the cavity (511). The interception components (52) are capable of intercepting hazardous waste, and the interception components (52) form several clearance spaces (512) in the cavity (511) for hazardous waste to pass through. The interception component (52) includes a plurality of interceptors (522) spaced apart, and the space between adjacent interceptors (522) on the same interception component (52) is the clearance space (512). The clearance space (512) on the interceptor component (52) closer to the first platform (21) is greater than the clearance space (512) on the interceptor component (52) farther away from the first platform (21). The clearance space (512) near the air outlet duct (14) is smaller than the clearance space (512) on the same interceptor assembly (52) away from the air outlet duct (14).

2. The stepped pre-combustion structure according to claim 1, characterized in that, The interception component (52) further includes a movable frame (521), which is movably connected to the cover (51) and surrounds a plurality of the interception components (522). The auxiliary device (5) further includes a drive assembly (53), which is disposed on the body (1) and is capable of driving the movable frame (521) to reciprocate relative to the cover (51).

3. The stepped pre-combustion structure according to claim 2, characterized in that, The drive assembly (53) includes a housing (531), an air blowing pipe (534), a plurality of impellers (532), and a plurality of cams (533); The housing (531) is disposed in the combustion chamber (11) and located on the side of the cover (51) away from the air outlet pipe (14). The housing (531) has a channel (5311) inside, and one end of the movable frame (521) passes through the housing (531) and is located in the channel (5311). One end of the air blowing pipe (534) is connected to the channel (5311), and the other end of the air blowing pipe (534) is connected to the first air cannon (41). The air blowing pipe (534) and the first air cannon (41) are supplied with air from the same air source. The impeller (532) is located in the channel (5311), and several impellers (532) are rotatably connected to several movable frames (521). After the air blowing pipe (534) blows air, several impellers (532) can rotate with the air flow. A plurality of cams (533) are connected to a plurality of impellers (532) respectively. A plurality of movable grooves (5312) are provided on the housing (531) for the cams (533) to move. The cams (533) rotate with the impellers (532). When the cams (533) rotate, they abut against the groove wall of the movable grooves (5312) and can drive the movable frame (521) to reciprocate relative to the cover (51).

4. The stepped pre-combustion structure according to claim 3, characterized in that, The first air cannon (41) operates periodically. When the first air cannon (41) is operating, the air blowing pipe (534) stops blowing air, and when the first air cannon (41) stops operating, the air blowing pipe (534) blows air.

5. A stepped pre-combustion structure according to claim 2, characterized in that, The top of the machine body (1) has two feed pipes (12), one of which is used for solid hazardous waste and the other is used for liquid hazardous waste.

6. The stepped pre-combustion structure according to claim 1, characterized in that, It also includes a baffle (6), which is disposed at the bottom of the combustion chamber (11) and located between the air inlet pipe (13) and the discharge port (15).

7. A stepped pre-combustion structure according to claim 6, characterized in that, The top of the baffle (6) has a guide portion (61) for guiding airflow, and the combustion chamber (11) has a guide surface (111) on the inner wall above the baffle (6). The inclination direction of the guide surface (111) is the same as the inclination direction of the stepped platform (2) and the inclination angle is equal. The guide portion (61) can guide the airflow along the guide surface (111).

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