Device for treating fly ash from incineration of municipal solid waste

Abstract

The present application relates to the technical field of environmental protection, in particular to a device for treating fly ash from incineration of municipal solid waste. The device comprises: an ash discharge unit, which comprises an air intake pipe, an air output pipe, an intersection pipe arranged between the air intake pipe and the air output pipe, and an ash accumulation cavity arranged at the bottom of the intersection pipe; and an ash removal unit, which comprises a driving assembly arranged on the outer side of the intersection pipe, a mounting assembly arranged inside the intersection pipe and connected to the driving assembly, and a filter assembly arranged on the mounting assembly. In the device for treating fly ash from incineration of municipal solid waste, by means of the filter assembly rotating in the intersection pipe, fly ash is filtered after entering the intersection pipe and being discharged from the air output pipe; and when the filter assembly passes through the air intake pipe and the intersection pipe, the fly ash passes through the filter assembly in a reverse direction, so as to achieve a cleaning effect, thereby prolonging the service life of the filter assembly.

Description

A domestic waste incineration fly ash treatment device

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202410615484.4, filed on May 17, 2024, and entitled "A domestic waste incineration fly ash treatment device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of environmental protection, in particular to a domestic waste incineration fly ash treatment device. BACKGROUND

[0004] Domestic waste incineration fly ash refers to the bottom ash collected by the flue gas purification system and the bottom ash settled at the bottom of the flue and chimney during the incineration of domestic waste. The incineration fly ash contains harmful substances and cannot be directly discharged or mixed with other hazardous waste.

[0005] The existing fly ash is first subjected to preliminary filtration when discharged, and the large particle fly ash is filtered, and then the remaining fly ash is subjected to subsequent desalination treatment. The large particle fly ash consumes the filter screen during filtration, and the filter screen needs to be frequently disassembled and cleaned, which is not conducive to efficient fly ash treatment. Therefore, the present application provides a domestic waste incineration fly ash treatment device.

[0006] SUMMARY

[0007] In view of the above problems of the existing domestic waste incineration fly ash treatment device, the present application is proposed.

[0008] Therefore, the purpose of the present application is to provide a domestic waste incineration fly ash treatment device, which aims to: improve the filtration service time of the filter screen.

[0009] To solve the above technical problems, the present application provides the following technical solution: a domestic waste incineration fly ash treatment device, comprising,

[0010] An ash discharge unit, the ash discharge unit comprising an air inlet pipe and an air outlet pipe, an intersection pipe arranged between the air inlet pipe and the air outlet pipe, and an ash accumulation cavity arranged at the bottom of the intersection pipe; and

[0011] An ash removal unit, the ash removal unit comprising a driving assembly arranged outside the intersection pipe, a mounting assembly arranged inside the intersection pipe and connected with the driving assembly, and a filter assembly arranged on the mounting assembly.

[0012] As an optional solution of the household garbage incineration fly ash treatment device, the driving assembly comprises a driving shaft rotatably arranged in the intersection pipe, a support plate arranged on the intersection pipe, and a driving motor arranged on the support plate and connected with the driving shaft.

[0013] As an optional solution of the household garbage incineration fly ash treatment device, the installation assembly comprises an installation shaft rotatably arranged in the intersection pipe and connected with the driving assembly, four support pipes arranged on the installation shaft, and a connecting column elastically arranged in the support pipe.

[0014] The filter assembly is connected with the connecting column.

[0015] As an optional solution of the household garbage incineration fly ash treatment device, the filter assembly is provided with four and connected with four connecting columns respectively.

[0016] The filter assembly comprises a mounting bracket arranged at the end of the connecting column, an arc-shaped mounting frame arranged outside the mounting bracket, and a filter screen arranged on the mounting frame.

[0017] There is a gap between every two adjacent mounting frames.

[0018] The filter screen rotates through the communication between the air inlet pipe and the intersection pipe and the communication between the air outlet pipe and the intersection pipe.

[0019] As an optional solution of the household garbage incineration fly ash treatment device, the ash removal unit further comprises a sliding assembly arranged on the filter assembly.

[0020] The ash removal unit is provided with a limiting assembly, and the limiting assembly cooperates with the sliding assembly.

[0021] The limiting assembly comprises a sliding groove arranged at both ends of the intersection pipe, an arc-shaped frame arranged in the intersection pipe and connected with the sliding groove, protrusions arranged at equal intervals in the arc-shaped frame, and an extrusion plate arranged in the sliding groove and located on one side of the air inlet pipe.

[0022] As an optional solution of the household garbage incineration fly ash treatment device, the sliding assembly comprises a limiting block arranged at the bottom of the mounting frame, and the limiting block is inserted into the sliding groove.

[0023] The limiting block cooperates with the extrusion plate and the protrusions, and the contact surface is an inclined surface.

[0024] As an optional solution of the household garbage incineration fly ash treatment device, the ash removal unit further comprises a compensation assembly, the compensation assembly comprises a containing groove arranged at the end of the mounting frame, a sealing plate slidingly arranged in the containing groove, a connecting pipe arranged in the mounting frame and communicating with the containing groove, a piston one slidingly arranged in the connecting pipe, and a connecting rope arranged between the piston one and the sealing plate.

[0025] The sealing plate is matched with the adjacent mounting frame.

[0026] The connecting pipe and the sliding assembly are provided with two, and the two ends of the connecting pipe are respectively connected with the two sliding assemblies.

[0027] As an optional solution of the household garbage incineration fly ash treatment device, the sliding assembly comprises a mounting pipe arranged on the mounting frame, a piston column elastically arranged in the mounting pipe, and a limiting block arranged at the bottom of the piston column; the limiting block is matched with the extrusion plate and the protruding block, and the contact surface is an inclined surface.

[0028] The expansion groove is arranged in the sliding groove close to the side of the air outlet pipe.

[0029] One end of the arc-shaped frame is connected with the expansion groove.

[0030] One end of the connecting pipe communicates with the top end of the mounting pipe.

[0031] As an optional solution of the household garbage incineration fly ash treatment device, the top area of the limiting block is greater than the bottom area of the piston column, and the limiting block is matched with the mounting frame.

[0032] As an optional solution of the household garbage incineration fly ash treatment device, the inner diameter of the mounting pipe is greater than the inner diameter of the connecting pipe.

[0033] The beneficial effects of the present application are that the filtering assembly rotates in the intersection pipe, the fly ash entering the intersection pipe and being discharged from the air outlet pipe is filtered, and the filtering assembly is reversely passed through by the fly ash when passing through the air inlet pipe and the intersection pipe, thereby achieving a cleaning effect and increasing the service life of the filtering assembly. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Fig. 1 is a schematic diagram of the overall structure of the household garbage incineration fly ash treatment device of the present application.

[0036] Fig. 2 is an enlarged view of area A in Fig. 1.

[0037] Fig. 3 is a schematic diagram of the internal structure of the intersection pipe of the household garbage incineration fly ash treatment device of the present application.

[0038] Fig. 4 is a schematic diagram of the filter assembly structure of the household garbage incineration fly ash treatment device of the present application.

[0039] Fig. 5 is a schematic diagram of the limiting assembly structure of the household garbage incineration fly ash treatment device of the present application.

[0040] Fig. 6 is a schematic diagram of the compensation component structure of the household garbage incineration fly ash treatment device of the present application.

[0041] Fig. 7 is a schematic diagram of the sliding assembly structure of the household garbage incineration fly ash treatment device of the present application. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0043] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0044] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0045] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0046] Embodiment 1

[0047] Referring to Figs. 1 and 2, a household garbage incineration fly ash treatment device is provided in the first embodiment of the present application, which comprises an ash discharging unit 100 and an ash removing unit 200.

[0048] The ash discharging unit 100 comprises an air inlet pipe 101 and an air outlet pipe 102, an intersection pipe 103 arranged between the air inlet pipe 101 and the air outlet pipe 102, and an ash storage cavity 104 arranged at the bottom of the intersection pipe 103.

[0049] The ash discharging unit 200 comprises a driving assembly 201 arranged outside the intersection pipe 103, a mounting assembly 202 arranged inside the intersection pipe 103 and connected with the driving assembly 201, and a filter assembly 203 arranged on the mounting assembly 202.

[0050] The driving assembly 201 comprises a driving shaft 201a rotatably arranged in the intersection pipe 103, a support plate 201b arranged on the intersection pipe 103, and a driving motor 201c arranged on the support plate 201b and connected with the driving shaft 201a. The mounting assembly 202 is made of a cross-shaped frame arranged at the end of the driving shaft 201a. The filter assembly 203 is made of filter plates arranged at the end of the cross-shaped frame, and there are intervals between the filter plates.

[0051] In use, the mounting assembly 202 and the filter assembly 203 are driven to rotate in the intersection pipe 103 by the driving motor 201c. When the filter assembly 203 rotates through the communication part of the air inlet pipe 101 and the air outlet pipe 102 with the intersection pipe 103, the fly ash entering from the air inlet pipe 101 and passing through is filtered, and the filtered fly ash can fall off with the rotation of the filter assembly 203 and finally fall into the ash storage cavity 104 for storage. When the filter assembly 203 passes through the communication part of the air inlet pipe 101 and the air outlet pipe 102 with the intersection pipe 103, the fly ash reversely passes through the filter assembly 203, which reversely cleans the filter assembly 203 and increases the service life of the filter assembly 203.

[0052] Embodiment 2

[0053] Referring to FIGS. 2-5, the second embodiment of the present application is different from the first embodiment in that the mounting assembly 202 comprises a mounting shaft 202a rotatably arranged inside the intersection pipe 103 and connected with the driving assembly 201, four support pipes 202b arranged on the mounting shaft 202a, and a connecting column 202c elastically arranged in the support pipe 202b and connected with the inside of the support pipe 202b through a spring. The filter assembly 203 is connected with the connecting column 202c, and the mounting shaft 202a is fixed with the driving shaft 201a.

[0054] The filter assembly 203 is provided with four, and is connected with four connecting columns 202c respectively; the filter assembly 203 includes a mounting frame 203a provided at the end of the connecting column 202c, an installation frame 203b provided outside the mounting frame 203a in an arc shape, and a filter screen 203c provided on the installation frame 203b; there is a gap between every two adjacent installation frames 203b;

[0055] The filter screen 203c rotates through the communication between the air inlet pipe 101 and the intersection pipe 103 and the communication between the air outlet pipe 102 and the intersection pipe 103, and drives the driving shaft 201a and the mounting shaft 202a to rotate through the driving motor 201c, so as to drive the four installation frames 203b to rotate; when the installation frame 203b passes through the communication between the air inlet pipe 101 and the intersection pipe 103 and the communication between the air outlet pipe 102 and the intersection pipe 103, the filter screen 203c will filter the fly ash entering from the air inlet pipe 101 and passing through.

[0056] Optionally, the ash removal unit 200 further includes a sliding assembly 204 provided on the filter assembly 203; the ash removal unit 100 is provided with a limiting assembly 205, and the limiting assembly 205 cooperates with the sliding assembly 204.

[0057] The limiting assembly 205 includes a sliding groove 205a provided at both ends of the intersection pipe 103, an arc-shaped frame 205b provided in the intersection pipe 103 and connected with the sliding groove 205a, protrusions 205c arranged at equal intervals in the arc-shaped frame 205b, and an extrusion plate 205d provided in the sliding groove 205a and located on one side of the air inlet pipe 101.

[0058] The sliding assembly 204 includes a limiting block 204a provided at the bottom of the installation frame 203b, and the limiting block 204a is inserted into the sliding groove 205a; the limiting block 204a cooperates with the extrusion plate 205d and the protrusions 205c, and the contact surface is an inclined surface.

[0059] As shown in Figure 5, the position one m is set at the communication between the air inlet pipe 101 and the intersection pipe 103, the position two n is set at the top of the intersection pipe 103, the position three h is set at the communication between the air outlet pipe 102 and the intersection pipe 103, and the position four k is set at the communication between the intersection pipe 103 and the dust cavity 104. The installation frame 203b starts to work when it is at the four positions. The limiting block 204a on the installation frame 203b at the position one m abuts against the extrusion plate 205d. At this time, the installation frame 203b compresses the spring one, and the installation frame 203b separates from the inner wall of the intersection pipe 103 at the communication between the air inlet pipe 101 and the intersection pipe 103. At this time, the fly ash enters the intersection pipe 103 from the interval between the installation frame 203b and the air inlet pipe 101, and is discharged from the air outlet pipe 102 after passing through the filter screen 203c at the position three h. The installation frame 203b at the position one m abuts against the inner wall of the intersection pipe 103 again after the rotation of the installation shaft 202a. When it reaches the position three h from the position two n, a small amount of fly ash is discharged from the interval between the two installation frames 203b. Most of the fly ash is filtered and falls from the filter screen 203c and finally falls from the interval between the two installation frames 203b into the dust cavity. The limiting block 204a is located in the middle of the installation frame 203b. When the installation frame 203b is completely coincident with the position one m, the limiting block 204a contacts the extrusion plate 205d, and the installation frame 203b separates from the inner wall of the intersection pipe 103. When the installation frame 203b just enters the position one m, the fly ash enters the intersection pipe 103 from the interval between the two installation frames 203b and the interval between the installation frame 203b and the inner wall of the intersection pipe 103. When the installation frame 203b is completely coincident with the position one m, the installation frame 203b completely covers the communication between the air inlet pipe 101 and the intersection pipe 103.

[0060] Optionally, when the installation frame 203b reaches the position four k, the limiting block 204a abuts against the protrusion 205c, which extrudes the installation frame 203b to separate from the inner wall of the intersection pipe 103 and compresses the spring one. After the limiting block 204a passes through the protrusion 205c, the installation frame 203b contacts the inner wall of the intersection pipe 103 under the elastic force of the spring one and collides, thereby shaking the fly ash in the filter screen 203c to achieve the effect of dust removal. The protrusion 205c has a plurality of protrusions. When the installation frame 203b passes through the position four k, it will vibrate several times. When the installation frame 203b is completely coincident with the position four k, the limiting block 204a contacts the first protrusion 205c. When the installation frame 203b is not completely separated from the position three h, the installation frame 203b does not contact the protrusion 205c and vibrate.

[0061] The remaining structure is the same as that of Example 1.

[0062] The use process is: with the working of the driving motor 201c, the installation frame 203b rotates in the intersection pipe 103 with the rotation of the driving shaft 201a and the installation shaft 202a, and the installation frame 203b drives the filter plate to pass through the position one m, the position two n, the position three h and the position four k in turn, and the plurality of installation frames 203b can be distributed in the four positions, and when the installation frame 203b passes through the position one m, the fly ash entering is not affected, and when the installation frame 203b enters the position four k, the cleaning of the fly ash can be carried out, and the service life of the filter screen 203c is increased.

[0063] Embodiment 3

[0064] Referring to FIGS. 6 and 7, the third embodiment of the present application is different from the second embodiment in that the ash removal unit 200 further comprises a compensation assembly 206, the compensation assembly 206 comprising a containing groove 206a arranged at the end of the installation frame 203b, a sealing plate 206b slidingly arranged in the containing groove 206a, a connecting pipe 206c arranged in the installation frame 203b and communicating with the containing groove 206a, a piston one 206d slidingly arranged in the cylinder of the connecting pipe 206c, and a connecting rope 206e arranged between the piston one 206d and the sealing plate 206b.

[0065] The sealing plate 206b cooperates with the adjacent installation frame 203b; the connecting pipe 206c and the sliding assembly 204 are provided with two, and the two ends of the two connecting pipes 206c are respectively connected with the two sliding assemblies 204.

[0066] The sliding assembly 204 comprises an installation pipe 204b arranged on the installation frame 203b, a piston column 204c elastically arranged in the installation pipe 204b, a spring two connecting between the piston column 204c and the installation pipe 204b, and a limiting block 204a arranged at the bottom of the piston column 204c; the limiting block 204a cooperates with the extrusion plate 205d and the protrusion 205c, and the contact surface is an inclined surface; the expansion groove 205e is arranged in the sliding groove 205a close to the air outlet pipe 102 side; the arc-shaped frame 205b is connected with the expansion groove 205e at one end.

[0067] Optionally, the top area of the limiting block 204a is greater than the bottom area of the piston column 204c, and the limiting block 204a cooperates with the installation frame 203b, when the limiting block 204a is extruded and moved, it will be limited by the installation frame 203b when it moves to the installation frame 203b, avoiding damage to the extrusion of the spring two.

[0068] When the limiting block 204a enters the expansion groove 205e, it will pop out under the elastic force of spring two, and at the same time it will suck the connecting pipe 206c, so that the piston one 206d moves, and the connecting rope 206e is pulled to shrink in the accommodating groove 206a. When the limiting block 204a leaves the expansion groove 205e, the limiting block 204a is pressed against the mounting frame 203b, and at the same time the piston column 204c injects air in the connecting pipe 206c, and pushes the piston one 206d to move, so that the connecting rope 206e is relaxed. The sealing plate 206b is made of metal, and under the action of gravity, it will extend out of the accommodating groove 206a or continue to shrink in the accommodating groove 206a. When it extends out of the accommodating groove 206a, it will pull the connecting rope 206e straight.

[0069] One end of the connecting pipe 206c communicates with the top end of the mounting pipe 204b, and the inner diameter of the mounting pipe 204b is larger than that of the connecting pipe 206c. The piston column 204c moves a small distance in the mounting pipe 204b, which can drive the piston one 206d to move a long distance.

[0070] As shown in Figure 7, the position one m is set at the communication between the air inlet pipe 101 and the intersection pipe 103, the position two n is set at the top of the intersection pipe 103, the position three h is set at the communication between the air outlet pipe 102 and the intersection pipe 103, and the position four k is set at the communication between the intersection pipe 103 and the soot chamber 104. Among them, the four mounting frames 203b start to work when they are respectively at the four positions. The limiting block 204a on the mounting frame 203b at the position one m abuts against the pressing plate 205d, at this time the mounting frame 203b compresses the spring one, and the mounting frame 203b separates from the inner wall of the intersection pipe 103 at the communication between the air inlet pipe 101 and the intersection pipe 103. At this time, the fly ash enters the intersection pipe 103 from the gap between the mounting frame 203b and the air inlet pipe 101, and then passes through the filter screen 203c at the position three h and is discharged from the air outlet pipe 102;

[0071] When the installation frame 203b at position one m is separated from the extrusion plate 205d after rotating with the installation shaft 202a, it will be attached to the inner wall of the intersection pipe 103 again and enter position two n. When the installation frame 203b reaches position two n and enters position three h, the sealing plate 206b in the installation frame 203b at this time will extend under the action of gravity and contact the previous installation frame 203b, eliminating the gap between them. When it just enters position three h, no fly ash will be discharged from the gap. When the installation frame 203b enters position three h completely, the limiting block 204a enters the expansion slot 205e, the sealing plate 206b retracts into the containing slot 206a, the gap between the installation frame 203b and the previous installation frame 203b is opened, and the filtered fly ash in the installation frame 203b can pass through the gap and enter the dust accumulation cavity 104. When the installation frame 203b enters position three h completely, the installation frame 203b completely covers the connection between the intersection pipe 103 and the air outlet pipe 102.

[0072] When the installation frame 203b enters position four k completely, the limiting block 204a contacts the arc-shaped frame 205b, the limiting block 204a is extruded, the connecting rope 206e is relaxed at this time, and the sealing plate 206b at this time retracts into the containing slot 206a under the action of gravity. When the installation frame 203b just enters position one m, fly ash will enter the intersection pipe 103 from the gap between the two installation frames 203b and the gap between the previous installation frame 203b and the inner wall of the intersection pipe 103. When the installation frame 203b passes through position four k, the limiting block 204a abuts against the protruding block 205c, which extrudes the installation frame 203b and the inner wall of the intersection pipe 103, and simultaneously compresses the spring one. After the limiting block 204a passes through the protruding block 205c, the installation frame 203b is quickly extruded to contact the inner wall of the intersection pipe 103 under the elastic force of the spring one and collides, thereby shaking off the fly ash in the filter screen 203c and achieving the effect of dust removal.

[0073] The remaining structure is the same as that of embodiment 2.

[0074] The use process is as follows: with the operation of the driving motor 201c, the installation frame 203b rotates in the intersection pipe 103 with the rotation of the driving shaft 201a and the installation shaft 202a, and the installation frame 203b drives the filter plate to pass through position one m, position two n, position three h and position four k in turn. A plurality of installation frames 203b can be distributed in the four positions. When the installation frame 203b passes through position one m, it does not affect the entry of fly ash. When the installation frame 203b enters position four k, it can clean the fly ash, increase the service life of the filter screen 203c, and the sealing plate 206b can extend to eliminate the gap between the two installation frames 203b when the installation frame 203b just enters position three h, and retract when the installation frame 203b enters position three h completely, without affecting the discharge of fly ash.

[0075] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not to limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, and all the modifications and equivalent replacements should be included in the scope of the claims of the present application.

Claims

1. A waste incineration fly ash treatment device, characterized by: The utility model relates to a dust discharging unit (100) and dust removing unit (200) for dust discharging unit (100), dust removing unit (200) is arranged on the dust discharging unit (100) and is connected with the dust discharging unit (100), and the dust discharging unit (100) and dust removing unit (200) are connected to form a dust discharging and removing unit. The dust discharging unit (100) comprises an air inlet pipe (101) and an air outlet pipe (102), an intersection pipe (103) arranged between the air inlet pipe (101) and the air outlet pipe (102), and a dust accumulation cavity (104) arranged at the bottom of the intersection pipe (103); and The dust removing unit (200) comprises a driving assembly (201) arranged outside the intersection pipe (103), a mounting assembly (202) arranged inside the intersection pipe (103) and connected with the driving assembly (201), and a filter assembly (203) arranged on the mounting assembly (202).

2. The household waste incineration fly ash treatment device according to claim 1, characterized in that: The driving assembly (201) comprises a driving shaft (201a) rotatably arranged in the intersection pipe (103), a support plate (201b) arranged on the intersection pipe (103), and a driving motor (201c) arranged on the support plate (201b) and connected with the driving shaft (201a).

3. The waste incineration fly ash treatment device according to claim 1 or 2, characterized in that: The mounting assembly (202) comprises a mounting shaft (202a) rotatably arranged inside the intersection pipe (103) and connected with the driving assembly (201), four support pipes (202b) arranged on the mounting shaft (202a), and a connecting column (202c) elastically arranged in the support pipe (202b); The filter assembly (203) is connected with the connecting column (202c).

4. The household waste incineration fly ash treatment device according to claim 3, characterized in that: There are four filter assemblies (203), and each filter assembly (203) is connected with a connecting column (202c). The filter assembly (203) comprises a mounting frame (203a) arranged at the end of the connecting column (202c), an arc-shaped mounting frame (203b) arranged outside the mounting frame (203a), and a filter screen (203c) arranged on the mounting frame (203b). There is a gap between every two adjacent mounting frames (203b). The filter screen (203c) rotatably passes through the communication part of the air inlet pipe (101) and the intersection pipe (103) and the communication part of the air outlet pipe (102) and the intersection pipe (103).

5. The household waste incineration fly ash treatment device according to claim 4, characterized in that: The dust removing unit (200) further comprises a sliding assembly (204) arranged on the filter assembly (203). The dust discharging unit (100) is provided with a limiting assembly (205), and the limiting assembly (205) cooperates with the sliding assembly (204). The limiting assembly (205) comprises a sliding groove (205a) arranged at both ends of the intersection pipe (103), an arc-shaped frame (205b) arranged in the intersection pipe (103) and connected with the sliding groove (205a), a protrusion (205c) arranged at equal intervals in the arc-shaped frame (205b), and a pressing plate (205d) arranged in the sliding groove (205a) and located on one side of the air inlet pipe (101). The sliding assembly (204) comprises a limiting block (204a) arranged at the bottom of the mounting frame (203b), and the limiting block (204a) is inserted into the sliding groove (205a). 6.The household garbage incineration fly ash treatment device according to claim 5, characterized in that: ​ The limiting block (204a) is matched with the extrusion plate (205d) and the protruding block (205c), and the contact surface is an inclined surface.

7. The household waste incineration fly ash treatment device according to claim 5, characterized in that: The ash removal unit (200) further comprises a compensation assembly (206), the compensation assembly (206) comprising a containing groove (206a) arranged at the end of the mounting frame (203b), a sealing plate (206b) slidingly arranged in the containing groove (206a), a connecting pipe (206c) arranged in the mounting frame (203b) and communicating with the containing groove (206a), a piston one (206d) slidingly arranged in the cylinder of the connecting pipe (206c), and a connecting rope (206e) arranged between the piston one (206d) and the sealing plate (206b); The sealing plate (206b) is matched with the adjacent mounting frame (203b); The connecting pipe (206c) and the sliding assembly (204) are provided with two, and the ends of the two connecting pipes (206c) are respectively connected with the two sliding assemblies (204). 8.The household garbage incineration fly ash treatment device according to claim 7, characterized in that: The sliding assembly (204) comprises a mounting pipe (204b) arranged on the mounting frame (203b), a piston column (204c) elastically arranged in the mounting pipe (204b), and a limiting block (204a) arranged at the bottom of the piston column (204c); the limiting block (204a) is matched with the extrusion plate (205d) and the protruding block (205c), and the contact surface is an inclined surface; The expansion groove (205e) is arranged in the chute (205a) near one side of the air outlet pipe (102); One end of the arc-shaped frame (205b) is connected with the expansion groove (205e); One end of the connecting pipe (206c) communicates with the top end of the mounting pipe (204b). 9.The household garbage incineration fly ash treatment device according to claim 8, characterized in that: The top area of the limiting block (204a) is greater than the bottom area of the piston column (204c), and the limiting block (204a) is matched with the mounting frame (203b). 10.The household garbage incineration fly ash treatment device according to claim 9, characterized in that: The inner diameter of the mounting pipe (204b) is greater than the inner diameter of the connecting pipe (206c).

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