A coke breaking and ash cleaning device for domestic waste treatment equipment

Abstract

The present application discloses a coke breaking and ash cleaning device for domestic waste treatment equipment, which belongs to the technical field of waste pyrolysis. It includes a frame and a discharge hopper, the discharge hopper is installed in the frame; a grate shaft is rotatably connected in the frame and is located above the discharge hopper; a grate is installed on the outer wall of the grate shaft; a slag breaker is installed on the outer wall of the grate shaft and extends to the side of the grate away from the grate shaft; a grate drive assembly is used to drive the grate shaft to rotate. The slag breaker of the present application turns with the grate, and the slag breaker has a stirring effect on the garbage layer in the furnace, which is conducive to ventilation and oxygen supply, can effectively reduce the generation of coke slag, reduce the adhesion of coke slag to the grate, and thus reduce the torque on the grate shaft during the turning process, extend the service life of the grate shaft and the grate, and maintain good pyrolysis conditions in the furnace.

Description

Technical Field

[0001] The present application relates to the technical field of waste pyrolysis, and in particular to a coke breaking and ash cleaning device for domestic waste treatment equipment. Background Art

[0002] The grate is a component in a boiler or industrial furnace that piles solid fuel and makes it burn effectively. The entire grate mainly consists of two parts: the frame and the grate plate. The grate plates are usually made of cast iron. After assembly, the necessary ventilation gaps are maintained between the plates, and a separate ventilation chamber with adjustable air volume is often set under the grate so that air can enter the fuel layer through the gap for combustion. The ash after burning is discharged manually or mechanically.

[0003] With respect to the above-mentioned related technologies, the inventors found that: the composition of domestic waste is complex, and it is easy to form coke slag in the furnace during the pyrolysis process. If the ventilation is poor, it is easy to cause the coke slag to stick to the grate, causing the grate to be subjected to excessive force during the subsequent turning process, damaging the grate and the grate shaft, and affecting the operation of the equipment. Summary of the invention

[0004] In order to help improve the pyrolysis effect in the furnace, the present application provides a coke breaking and ash cleaning device for domestic waste treatment equipment.

[0005] The present application provides a coke breaking and ash cleaning device for domestic waste treatment equipment, which adopts the following technical solution:

[0006] A coke breaking and ash cleaning device for domestic waste treatment equipment, comprising:

[0007] a frame and a discharge hopper, wherein the discharge hopper is mounted within the frame;

[0008] A grate shaft, rotatably connected to the frame and located above the discharge hopper;

[0009] A grate, mounted on the outer wall of the grate shaft;

[0010] A slag breaker is mounted on the outer wall of the grate shaft and extends to a side of the grate away from the grate shaft;

[0011] The grate drive assembly is used to drive the grate shaft to rotate.

[0012] By adopting the above technical scheme, during the pyrolysis process, driven by the grate shaft, the grate flips back and forth at a certain angle, and the slag breaker flips with the grate. The slag breaker stirs the garbage layer in the furnace, which is beneficial to ventilation and oxygen supply, and can effectively reduce the generation of coke slag and reduce the adhesion of coke slag to the grate, thereby reducing the torque applied to the grate shaft during the flipping process, extending the service life of the grate shaft and the grate, and maintaining good pyrolysis conditions in the furnace.

[0013] Optionally, the slag breaker includes a first slag breaking rod and a second slag breaking rod, the first slag breaking rod is vertically connected to the outer wall of the grate shaft, and the second slag breaking rod is vertically connected to the end of the first slag breaking rod.

[0014] By adopting the above technical solution, the garbage layer can be fully stirred with a simple structure, which is beneficial to reducing installation costs while improving pyrolysis conditions. Such a setting is also convenient for subsequent maintenance by staff, reducing maintenance time, reducing maintenance costs, shortening equipment downtime, and ensuring production needs.

[0015] Optionally, an extending direction of the second slag breaking rod is consistent with an extending direction of the grate shaft.

[0016] By adopting the above technical solution, the length of the second slag breaking rod can be shortened to the greatest extent while maintaining the maximum turning volume, which can not only effectively reduce the cost of the device but also maintain the ventilation and oxygen supply effect on the garbage layer.

[0017] Optionally, a plurality of third slag breaking bars are connected to the end of the second slag breaking bar, and the plurality of third slag breaking bars are connected to the second slag breaking bar to form a ventilating cavity.

[0018] By adopting the above technical solution, the turning volume of the slag breaker can be further increased, the ventilation and oxygen supply effect of the garbage layer can be improved, and at the same time, the movement of the garbage layer can be promoted, thereby improving the discharge effect of the garbage after pyrolysis.

[0019] Optionally, the grate shaft, the first slag-breaking rod and the second slag-breaking rod are all hollow, and the grate shaft, the first slag-breaking rod and the second slag-breaking rod are connected in sequence.

[0020] By adopting the above technical solution, gas is supplied to the grate shaft, the first slag breaking rod and the second slag breaking rod, the contact area between oxygen and the inside of the garbage layer is increased, and the pyrolysis effect of the garbage is further improved. At the same time, the gas can also blow off the coke slag adhered to the grate, reduce the coke slag residue on the grate, make the rotation of the grate shaft smoother, reduce the maintenance frequency, and extend the service life of the equipment.

[0021] Optionally, a dust cleaning assembly is provided on the inner wall of the discharge hopper, and the dust cleaning assembly includes a ventilation duct and a duct control valve body. The ventilation duct is provided close to the inner wall of the discharge hopper, and an air outlet is provided on the outer wall of the ventilation duct. The duct control valve body is connected to the ventilation duct and is located on the outside of the discharge hopper.

[0022] By adopting the above technical solution, air is supplied into the ventilation duct, and the gas is ejected from the air outlet to flush the inner wall of the discharge hopper to remove the dust adhering to the inner wall of the discharge hopper, thereby avoiding the grate jamming caused by excessive dust accumulation under the grate during operation to the greatest extent, and ensuring the normal use of the grate and the grate shaft. In addition, the gas in the ventilation duct can also flow upward to further supply oxygen to the garbage layer, further improving the pyrolysis effect of the garbage.

[0023] Optionally, the ventilation duct includes a main ventilation pipe and a plurality of secondary ventilation pipes, the plurality of secondary ventilation pipes are connected to the main ventilation pipe, the plurality of secondary ventilation pipes are located in a discharge hopper, and the pipeline control valve body is arranged between the main ventilation pipe and the secondary ventilation pipes.

[0024] By adopting the above technical solution, the inner wall of the discharge hopper can be cleaned in different areas. When a certain area of ​​the discharge hopper needs to be sprayed, the corresponding pipeline control valve body can be opened and other pipeline control valve bodies can be closed to make the gas pressure sprayed from the ventilation secondary pipe in the area stronger, thereby improving the cleaning effect of the dust on the inner wall of the discharge hopper.

[0025] Optionally, an oxygen supply main is installed on the side wall of the discharging hopper, and the side wall of the oxygen supply main is connected to an oxygen supply branch pipe extending in a vertical direction, and the end of the oxygen supply branch pipe is connected to an oxygen supply head, and the oxygen supply head is located above the grate; a support sleeve is fixed in the frame, and the support sleeve is arranged between adjacent grate axes, and one end of the oxygen supply branch pipe passes through the support sleeve and extends to the top of the support sleeve.

[0026] By adopting the above technical scheme, oxygen is further supplied to the furnace through the oxygen supply main pipe and the oxygen supply branch pipe, so that the garbage can be fully burned; the support sleeve is used to reduce the gap between adjacent grate axes, ensuring that one end of the oxygen supply branch pipe can extend to the top of the grate without affecting the pyrolysis process, thereby reducing the garbage from falling directly into the discharge hopper from the gap between adjacent grate axes.

[0027] Optionally, the oxygen supply branch pipe includes a fixed oxygen supply branch pipe and a movable oxygen supply branch pipe, the fixed oxygen supply branch pipe is fixedly connected to the side wall of the oxygen supply main pipe, the movable oxygen supply branch pipe is rotatably connected to the fixed oxygen supply branch pipe, and a branch pipe driving assembly for driving the movable oxygen supply branch pipe to rotate is provided in the discharging hopper.

[0028] By adopting the above technical solution, the garbage layer is stirred synchronously during the oxygen supply process, which is more conducive to ventilation and oxygen supply, and further improves the pyrolysis efficiency and effect of the garbage.

[0029] Optionally, the height of the top side of the supporting sleeve is higher than the height of the top side of the grate.

[0030] By adopting the above technical solution, the accumulation of garbage on the top side of the support sleeve is reduced, so that most of the garbage can be located on the grate, ensuring that basically all the garbage can be pyrolyzed, further improving the pyrolysis effect.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. During the pyrolysis process, driven by the grate shaft, the grate flips back and forth at a certain angle, and the slag breaker flips with the grate. The slag breaker stirs the garbage layer in the furnace, which is beneficial to ventilation and oxygen supply, and can effectively reduce the generation of coke slag and the adhesion of coke slag to the grate, thereby reducing the torque on the grate shaft during the flipping process, extending the service life of the grate shaft and the grate, and maintaining good pyrolysis conditions in the furnace.

[0033] 2. The cleaning component flushes the inner wall of the discharge hopper to remove the dust adhering to the inner wall of the discharge hopper, thereby avoiding the grate from getting stuck due to excessive dust accumulation under the grate during operation to the greatest extent possible, and ensuring the normal use of the grate and the grate shaft.

[0034] 3. The oxygen supply main pipe and oxygen supply branch pipe can further supply oxygen on the one hand, and stir the garbage layer on the other hand, which is more conducive to ventilation and oxygen supply of the garbage layer, and further improves the pyrolysis efficiency and pyrolysis effect of the garbage. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0036] Figure 2 It is a top view of the overall structure of Example 1 of the present application.

[0037] Figure 3 is along Figure 2 Section view along line AA.

[0038] Figure 4 is along Figure 2 Cross-sectional view along line BB.

[0039] Figure 5 is along Figure 4 Sectional view along the CC line.

[0040] Figure 6 This is a cross-sectional schematic diagram of Example 2 of the present application, which mainly shows the slag breaker.

[0041] Figure 7 This is a cross-sectional schematic diagram of Example 3 of the present application, which mainly shows the slag breaker.

[0042] Figure 8 Embodiment 3 of the present application mainly shows a cross-sectional schematic diagram of another slag breaker.

[0043] Fig. 9 This is a cross-sectional schematic diagram of Example 4 of the present application, which mainly shows the slag breaker.

[0044] Description of reference numerals:

[0045] 10. Frame; 11. Discharge hopper; 12. Grate shaft; 13. Grate; 2. Slag breaker; 20. Fixed sleeve; 21. First slag breaking rod; 22. Second slag breaking rod; 23. Third slag breaking rod; 31. Oxygen supply main pipe; 32. Oxygen supply branch pipe; 321. Oxygen supply fixed branch pipe; 322. Oxygen supply movable branch pipe; 33. Oxygen supply head; 4. Branch pipe drive assembly; 5. Support sleeve; 6. Ash cleaning assembly; 61. Ventilation main pipe; 62. Ventilation secondary pipe; 63. Pipeline control valve body; 64. Air outlet; 7. Oxygen supply pipe. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-9 This application is described in further detail.

[0047] Example 1

[0048] The present application discloses a coke-breaking and ash-cleaning device for domestic waste treatment equipment. Figure 1 , including a frame 10 and a discharge hopper 11 installed in the frame 10, a grate shaft 12 is rotatably connected above the discharge hopper 11 in the frame 10, the grate shaft 12 extends in the horizontal direction, a plurality of grates 13 arranged at intervals are fixed to the outer wall of the same grate shaft 12, and a grate driving assembly for driving the grate shaft 12 to rotate is arranged on the outer side of the frame 10. The grate driving assembly can select a sprocket assembly, and the sprocket assembly is used to drive the grate shaft 12 to rotate. The sprocket assembly is a conventional technology and will not be shown in detail here.

[0049] Reference Figure 2 and Figure 3 A slag breaker 2 is provided between adjacent grates 13 of the same grate shaft 12, and the slag breaker 2 is connected to the grate shaft 12. The slag breaker 2 includes a fixed sleeve 20, a first slag breaking rod 21 and a second slag breaking rod 22. The fixed sleeve 20 is sleeved and fixed on the outer periphery of the grate shaft 12, the first slag breaking rod 21 is fixedly connected to the outer wall of the fixed sleeve 20 along the radial direction of the grate shaft 12, and the second slag breaking rod 22 is fixedly connected to the end of the first slag breaking rod 21, and the second slag breaking rod 22 is located above the grate 13. The first slag breaking rod 21 and the second slag breaking rod 22 flip with the grate shaft 12, which stirs the garbage layer in the furnace, is conducive to ventilation and oxygen supply, and maintains a good pyrolysis condition in the furnace.

[0050] Reference Figure 3At the same time, the extension direction of the second slag breaking rod 22 can intersect with the extension direction of the grate shaft 12. When the extension direction of the second slag breaking rod 22 is consistent with the extension direction of the grate shaft 12, the length of the second slag breaking rod 22 can be shortened to the greatest extent while maintaining a large turning volume, which can effectively reduce the cost of the device and maintain the ventilation and oxygen supply effect on the garbage layer.

[0051] Reference Figure 3 and Figure 4 In order to further improve the oxygen supply and ventilation effect, an oxygen supply main pipe 31 is installed on the side wall of the discharge hopper 11. The oxygen supply main pipe 31 passes through the side wall of the discharge hopper 11 and extends to the center of the discharge hopper 11 in the horizontal direction. The outer wall of the oxygen supply main pipe 31 is connected with an oxygen supply branch pipe 32. The oxygen supply branch pipe 32 is arranged near the center of the discharge hopper 11, and the oxygen supply branch pipe 32 extends to the top of the grate 13 in the vertical direction.

[0052] The oxygen supply branch pipe 32 includes a fixed oxygen supply branch pipe 321 and a movable oxygen supply branch pipe 322. The fixed oxygen supply branch pipe 321 is fixedly connected to the side wall of the oxygen supply main pipe 31. The movable oxygen supply branch pipe 322 is coaxially rotatably connected to the fixed oxygen supply branch pipe 321. A branch pipe driving assembly 4 for driving the movable oxygen supply branch pipe 322 to rotate is provided in the discharge hopper 11. The branch pipe driving assembly 4 can select a crank rocker mechanism to drive the movable oxygen supply branch pipe 322 to rotate back and forth. Figure 4 The structure shown in the figure is a rocker, and other structures are not shown in the figure.

[0053] Reference Figure 1 and Figure 4 A support sleeve 5 extending in the horizontal direction is fixed to the inner wall of the frame 10, and the extension direction of the support sleeve 5 is consistent with the extension direction of the grate shaft 12. One end of the oxygen supply movable branch pipe 322 passes through the support sleeve 5 and is rotatably connected to the side wall of the support sleeve 5. An oxygen supply head 33 is installed at the end of the oxygen supply movable branch pipe 322.

[0054] Reference Figure 3 Oxygen is introduced into the oxygen supply main pipe 31, and the branch pipe driving assembly 4 is used to drive the oxygen supply movable branch pipe 322 to rotate. The oxygen supply movable branch pipe 322 and the oxygen supply head 33 can supply oxygen to the garbage layer on the one hand, and stir the garbage layer on the other hand, thereby further improving the pyrolysis efficiency and pyrolysis effect of the garbage.

[0055] Reference Figure 4In this embodiment, two oxygen supply branches 32 are provided, and the two oxygen supply branches 32 are provided near the center of the discharge hopper 11. At this time, two support sleeves 5 are provided, and a grate shaft 12 and a corresponding grate 13 are provided between the two support sleeves 5, and the top side height of the support sleeve 5 is higher than the top side height of the grate 13. The garbage located on the top side of the support sleeve 5 can fall into the top side of the grate 13 after incineration, and the garbage can fall smoothly into the discharge hopper 11 when the grate 13 is turned over later.

[0056] Reference Figure 4 and Figure 5 A dust cleaning component 6 is also provided in the discharge hopper 11. The dust cleaning component 6 includes a ventilation duct and a duct control valve body 63. The ventilation duct includes a ventilation main pipe 61 and a ventilation secondary pipe 62. In this embodiment, a ventilation main pipe 61 connects two ventilation secondary pipes 62. The ventilation main pipe 61 is installed in the frame 10 and is located on the outside of the discharge hopper 11. The ventilation secondary pipe 62 is connected to the ventilation main pipe 61 and is arranged close to the inner wall of the discharge hopper 11. The duct control valve body 63 is arranged between the ventilation secondary pipe 62 and the ventilation main pipe 61.

[0057] Reference Figure 4 and Figure 5 The secondary ventilation pipe 62 extends along the circumference of the discharge hopper 11, and the extension direction of the secondary ventilation pipe 62 is basically consistent with the extension direction of the grate axis 12. The secondary ventilation pipe 62 located on the same side of the discharge hopper 11 is arranged in two sections, and the two sections of the secondary ventilation pipe 62 are symmetrically arranged with the center line perpendicular to the grate axis 12 as the center, and the side wall of the secondary ventilation pipe 62 is opened with a plurality of air outlet holes 64 arranged at intervals.

[0058] Compressed air is ejected through the air outlet 64 to flush the inner wall of the discharge hopper 11 to remove dust adhering to the inner wall of the discharge hopper 11, thereby minimizing the phenomenon of the grate 13 being stuck due to excessive dust accumulation under the grate 13 during operation, and ensuring the normal use of the grate 13 and the grate shaft 12.

[0059] Reference Figure 5 In addition, an oxygen supply pipe 7 is installed on the side wall of the discharge hopper 11, and one end of the oxygen supply pipe 7 extends into the discharge hopper 11, and the oxygen supply pipe 7 is used to supply oxygen to the furnace.

[0060] The implementation principle of the coke breaking and ash cleaning device of a domestic waste treatment equipment in an embodiment of the present application is as follows: the slag breaker 2 turns with the grate 13, and the slag breaker 2 stirs the garbage layer in the furnace, which is beneficial to ventilation and oxygen supply. At the same time, the oxygen supply active branch pipe 322 and the oxygen supply head 33 rotate and supply oxygen, which is beneficial to further ventilation and oxygen supply. The combination of the two can effectively reduce the generation of coke slag and reduce the adhesion of coke slag to the grate 13, thereby reducing the torque applied to the grate shaft 12 during the turning process, extending the service life of the grate shaft 12 and the grate 13, and maintaining good pyrolysis conditions in the furnace.

[0061] Example 2

[0062] Reference Figure 6 , the difference between this embodiment and embodiment 1 is that the slag breaking oxygen supply method of the slag breaker 2 is different. In this embodiment, the grate shaft 12, the first slag breaking rod 21 and the second slag breaking rod 22 are all hollow, the grate shaft 12 and the first slag breaking rod 21 are fixedly connected, and the grate shaft 12, the first slag breaking rod 21 and the second slag breaking rod 22 are connected in sequence. Oxygen is introduced into the grate shaft 12, and the oxygen is blown out from the end of the second slag breaking rod 22. The first slag breaking rod 21 and the second slag breaking rod 22 rotate with the grate shaft 12, on the one hand, the garbage layer is turned over and stirred, and on the other hand, oxygen is provided to further improve the pyrolysis efficiency and pyrolysis effect of the garbage.

[0063] Example 3

[0064] Reference Figure 7 and Figure 8 The difference between this embodiment and the first embodiment is that the structure of the slag breaker 2 is different. In this embodiment, the outer wall of the second slag breaking rod 22 near the end is fixedly connected to a plurality of third slag breaking rods 23. Figure 7 Two third slag breaking rods 23 are provided, and the two third slag breaking rods 23 are arranged far away from the first slag breaking rod 21. The ends of the two third slag breaking rods 23 are connected to each other. An air-permeable cavity is formed between the two third slag breaking rods 23 and the one second slag breaking rod 22. The third slag breaking rods 23 are utilized to increase the contact area with the garbage layer, thereby further improving the oxygen supply and ventilation effect.

[0065] In another embodiment, referring to Figure 8 , two third slag-breaking rods 23 are provided, and the ends of the two third slag-breaking rods 23 are fixedly connected to the outer wall of the first slag-breaking rod 21. Such a configuration can not only enhance the structural strength of the slag breaker 2, but also increase the contact area with the garbage and improve the oxygen supply and ventilation effect. In other embodiments, more than two third slag-breaking rods 23 can be provided, and the scheme of increasing the stirring area by using the third slag-breaking rods 23 belongs to the disclosure scope of the present application.

[0066] Example 4

[0067] Reference Fig. 9, the difference between this embodiment and embodiment 3 is that the oxygen supply method for slag breaking of the slag breaker 2 is different. In this embodiment, the grate shaft 12, the first slag breaking rod 21 and the second slag breaking rod 22 are all hollow, the grate shaft 12, the first slag breaking rod 21 and the second slag breaking rod 22 are connected in sequence, a plurality of third slag breaking rods 23 are fixedly connected to the outer wall of the second slag breaking rod 22 near the end, the end of the third slag breaking rod 23 is fixedly connected to the outer wall of the first slag breaking rod 21, the third slag breaking rod 23 is a solid, oxygen is blown out from the end of the second slag breaking rod 22, the third slag breaking rod 23 can play a role in reinforcing the slag breaker 2 and improving the stirring effect, and the first slag breaking rod 21 and the second slag breaking rod 22 play a role in ventilation and stirring.

[0068] The setting of this scheme not only improves the stirring effect of the garbage layer, but also effectively supplies oxygen to the inside of the garbage layer, further improving the thermal decomposition effect of the garbage.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coke breaking and ash cleaning device for domestic waste treatment equipment, Features ,include: A frame (10) and a discharge hopper (11), wherein the discharge hopper (11) is installed in the frame (10); A grate shaft (12) rotatably connected to the frame (10) and located above the discharge hopper (11); A grate (13) mounted on the outer wall of the grate shaft (12); A slag breaker (2) mounted on the outer wall of the grate shaft (12) and extending to a side of the grate (13) away from the grate shaft (12); A grate drive assembly, used to drive the grate shaft (12) to rotate; The slag breaker (2) comprises a first slag breaking rod (21) and a second slag breaking rod (22), wherein the first slag breaking rod (21) is vertically connected to the outer wall of the grate shaft (12), and the second slag breaking rod (22) is vertically connected to the end of the first slag breaking rod (21); An oxygen supply main pipe (31) is installed on the side wall of the discharge hopper (11), and an oxygen supply branch pipe (32) extending in a vertical direction is connected to the side wall of the oxygen supply main pipe (31), and an oxygen supply head (33) is connected to the end of the oxygen supply branch pipe (32), and the oxygen supply head (33) is located above the grate (13); a support sleeve (5) is fixed in the frame (10), and the support sleeve (5) is arranged between adjacent grate shafts (12), and one end of the oxygen supply branch pipe (32) passes through the support sleeve (5) and extends to the top of the support sleeve (5); The oxygen supply branch pipe (32) comprises a fixed oxygen supply branch pipe (321) and a movable oxygen supply branch pipe (322); the fixed oxygen supply branch pipe (321) is fixedly connected to the side wall of the oxygen supply main pipe (31); the movable oxygen supply branch pipe (322) is rotatably connected to the fixed oxygen supply branch pipe (321); and a branch pipe driving assembly (4) for driving the movable oxygen supply branch pipe (322) to rotate is provided in the discharge hopper (11).

2. A coke breaking and ash cleaning device for domestic waste treatment equipment according to claim 1, Features: The extension direction of the second slag breaking rod (22) is consistent with the extension direction of the grate shaft (12).

3. A coke breaking and ash cleaning device for domestic waste treatment equipment according to claim 1, Features: A plurality of third slag-breaking rods (23) are connected to the end of the second slag-breaking rod (22), and the plurality of third slag-breaking rods (23) are connected to the second slag-breaking rod (22) to form a ventilating cavity.

4. A coke breaking and ash cleaning device for domestic waste treatment equipment according to any one of claims 1 to 3, Features: The grate shaft (12), the first slag-breaking rod (21) and the second slag-breaking rod (22) are all hollow, and the grate shaft (12), the first slag-breaking rod (21) and the second slag-breaking rod (22) are connected in sequence.

5. A coke breaking and ash cleaning device for domestic waste treatment equipment according to claim 1, Features: The inner wall of the discharge hopper (11) is provided with a dust cleaning component (6), the dust cleaning component (6) comprising a ventilation duct and a duct control valve body (63), the ventilation duct is arranged close to the inner wall of the discharge hopper (11), an air outlet hole (64) is opened on the outer wall of the ventilation duct, and the duct control valve body (63) is connected to the ventilation duct and is located outside the discharge hopper (11).

6. A coke breaking and ash cleaning device for domestic waste treatment equipment according to claim 5, Features: The ventilation duct comprises a ventilation main pipe (61) and a plurality of ventilation secondary pipes (62), wherein the plurality of ventilation secondary pipes (62) are connected to the ventilation main pipe (61), the plurality of ventilation secondary pipes (62) are located in the discharge hopper (11), and the pipeline control valve body (63) is arranged between the ventilation main pipe (61) and the ventilation secondary pipes (62).

7. A coke breaking and ash cleaning device for domestic waste treatment equipment according to claim 1, Features: The height of the top side of the supporting sleeve (5) is higher than the height of the top side of the grate (13).

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