A waste treatment apparatus for the production of an aluminium alloy composite

Abstract

The application relates to the technical field of metal waste treatment, in particular to a waste treatment device for preparing aluminum alloy composite materials. The technical scheme comprises a middle pipeline fixedly installed on a horizontal part of a flue gas pipeline, a spiral flow guide vane fixedly installed in the middle pipeline, and a conical filter plate fixedly installed in the middle pipeline and located at the tail end of the spiral flow guide vane. The generated flue gas of the incinerated aluminum alloy waste is guided by the middle pipeline and the spiral flow guide vane to form spiral flow, large-particle aluminum ash is thrown to the middle pipeline by centrifugal force, direct impact of the large-particle aluminum ash on the conical filter plate is avoided, the conical filter plate is blocked, meanwhile, middle-particle aluminum ash is intercepted on the surface of filter holes, the aluminum ash particles are subjected to the action of airflow drag force through high-speed sweeping of a cyclone, airflow shear force continuously washes the fine aluminum ash accumulated on the surface of the filter screen, the durability of the conical filter plate is improved, the loss is reduced, and the influence of flue gas treatment is avoided.

Description

Technical Field

[0001] This invention relates to the field of metal waste treatment technology, and in particular to a waste treatment device for the preparation of aluminum alloy composite materials. Background Technology

[0002] During the entire production process of aluminum alloy composite materials, defective products such as scrap plates, bulges, and color differences may occur. Waste will be continuously generated during the production process. Directly discarding composite waste is equivalent to losing valuable metals. If the waste is piled up and landfilled at will, aluminum shavings will be oxidized and lost when exposed to rainwater, and oil stains will seep into the soil and groundwater. Plastics and coating organic matter will degrade over a long period of time, producing toxic pollutants.

[0003] Patent document CN214346935U discloses a waste treatment device for aluminum alloy processing, comprising a support plate, a heating barrel fixedly disposed on one side of the upper surface of the support plate, and two purification barrels symmetrically fixedly disposed on the upper surface of the support plate away from the heating barrel. A rectangular plate is fixedly connected between the opposing sides of the two purification barrels. A heating chamber is opened inside the heating barrel, and an incineration barrel is disposed inside the heating chamber. A blower is fixedly installed on the upper surface of the rectangular plate. An insulated pipe is connected to the outer edge of the blower facing the heating barrel, passing through the heating barrel and extending into the incineration barrel. Both sides of the outer edge of the blower are connected to connecting pipes extending into the purification barrels. This waste treatment device for aluminum alloy processing has a reasonable structure, which facilitates the purification of irritating gases generated during the melting of aluminum alloy waste, avoids direct emission of polluting air, and facilitates the crushing of aluminum alloy waste, thereby improving melting efficiency.

[0004] However, the flue gas from aluminum alloy waste processing contains aluminum dust, tar, and carbon black. After the high-temperature flue gas enters the low-temperature casing and impeller of the blower, it is cooled down. The tar condenses into a viscous oil film, which adheres to the inner wall of the impeller and volute. Aluminum ash and carbon black adhere to the oil film and accumulate layer by layer, hardening into coke blocks, which seriously affects the treatment of flue gas generated from aluminum alloy waste recycling. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a waste treatment device for the preparation of aluminum alloy composite materials.

[0006] The technical solution of this invention: A waste treatment device for the preparation of aluminum alloy composite materials, comprising an incinerator, wherein a flue gas duct is fixedly installed on the top of the incinerator, and a spray tower for spraying to reduce fine dust is fixedly connected to the tail end of the flue gas duct, and further comprising: A central interception unit for intercepting large aluminum powder particles includes a central pipe fixedly installed in the horizontal section of a flue gas duct. A spiral guide vane is fixedly installed inside the central pipe. A conical filter plate is fixedly installed inside the central pipe at the tail end of the spiral guide vane. The conical filter plate has a conical structure and filter holes. The inclination angle of the cross section of the spiral guide vane is the same as the inclination angle of the cross section of the conical filter plate. A spiral flow of gas is formed at the spiral guide vane, and the gas flow direction is tangential to the conical filter plate. An ash discharge pipe for discharging aluminum powder is fixedly installed below the central pipe. The ash discharge pipe is equipped with a gravity-sealed, heat-insulated discharge section inside, and both ends of the centrally located pipe are equipped with backflow prevention sections. Optionally, one end of the conical filter plate is fixedly connected to the spiral guide vane, the spiral guide vane has a built-in heat-conducting pipe, the other end of the spiral guide vane is fixedly installed with a dead angle expansion plate between it and the central pipe, and the ash discharge pipe is located near the tail end of the conical filter plate.

[0007] Optionally, an interceptor plate is fixedly installed inside the central pipe and on the side of the dead angle expansion plate. The top of the interceptor plate is fixedly connected to the conical filter plate. The spiral-flowing gas first passes through the ash discharge pipe and then flows to the interceptor plate.

[0008] Optionally, the heat-insulating discharge section includes a heat-insulating cover plate that seals the ash discharge pipe. The end of the heat-insulating cover plate is rotatably connected to the ash discharge pipe via a rotating shaft. An extension rod is fixedly installed at the end of the heat-insulating cover plate, and a counterweight is fixedly installed at the end of the extension rod.

[0009] Optionally, the ash discharge pipe is provided with a high-temperature resistant clip inside, and the insulation cover is provided with a clip hole for engaging with the high-temperature resistant clip.

[0010] Optionally, when the card hole is engaged with the high-temperature resistant clip, the insulation cover is in a horizontal state, and the insulation cover is located in the ash discharge pipe near the middle.

[0011] Optionally, a support platform is fixedly installed on the outer wall of the ash discharge pipe, and a contact switch is fixedly installed on the top of the support platform. When the extension rod is in a horizontal state, the bottom of the extension rod is in contact with the contact switch.

[0012] Optionally, the backflow clearing section includes a support frame fixedly installed at the end of the conical filter plate. A conical nozzle is rotatably connected to the side of the support frame and located inside the conical filter plate. A row of eccentric spray holes is opened on the conical nozzle, and the orientation of the eccentric spray holes is tangent to the cross section of the conical nozzle.

[0013] Optionally, the dead zone expansion plate has an internal jet pipe, one end of which is connected to a conical nozzle, and the other end of which is connected to a pulse jet canister.

[0014] Optionally, the tail end of the centrally located pipe is fixedly connected to the pulse jet canister, the front end of the centrally located pipe is fixedly connected to the pneumatic butterfly valve, and the contact switch is electrically connected to the pulse jet canister and the pneumatic butterfly valve.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. This invention guides the flue gas generated from the incineration of aluminum alloy waste into a spiral flow by using a centrally located pipe and spiral guide vanes. The spiral guide vanes have the same inclination angle as the conical filter plate, making the spiral airflow direction tangential to the conical filter plate. Large aluminum ash particles are thrown to the centrally located pipe by centrifugal force, preventing them from directly impacting and damaging the conical filter plate and clogging it. At the same time, medium-sized aluminum ash particles are intercepted on the surface of the filter holes. After being swept by the high-speed cyclone, the aluminum ash particles are dragged by the airflow, and the airflow shear force continuously washes away the fine aluminum ash accumulated on the filter screen surface, improving the durability of the conical filter plate, reducing wear, and avoiding affecting the flue gas generated from the recycling of aluminum alloy waste.

[0016] 2. This invention uses a locking hole and a high-temperature resistant clip to apply supporting force to the insulation cover, lever force of the counterweight, and the weight of the insulation cover and aluminum ash to achieve balance. When the weight of the aluminum ash is greater than the weight of the counterweight, the insulation cover rotates downward to open the ash discharge pipe, allowing the aluminum ash to be discharged quickly. The pipe can only be opened when a large amount of aluminum ash has accumulated, avoiding frequent opening of the ash discharge pipe. When the locking hole and the high-temperature resistant clip separate, only the lever force of the counterweight and the weight of the insulation cover and aluminum ash remain. The sudden loss of force will cause the insulation cover to quickly flip over to discharge the aluminum ash and reset under the action of the counterweight, thereby achieving rapid discharge of aluminum ash and rapid sealing of the insulation cover, preventing heat loss from the ash discharge pipe.

[0017] 3. This invention uses an eccentric nozzle positioned tangentially to spray air, utilizing the reaction force of the gas to rotate the conical nozzle, thereby increasing the spray area. Compared to multi-angle nozzles, the sprayed gas pressure is greater, improving the effect of reverse airflow in cleaning the filter holes. At the same time, the pneumatic butterfly valve reduces the forward airflow, minimizing the impact of the forward airflow on the reverse airflow cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the incinerator structure; Figure 3 This is a schematic diagram of a centrally located pipe structure. Figure 4 This is a cross-sectional view of a centrally located pipe structure. Figure 5 for Figure 4 Enlarged schematic diagram of the counterweight structure in part A; Figure 6 This is a schematic diagram of the main sectional view of the ash discharge pipe structure; Figure 7 This is a schematic diagram of a conical nozzle structure; Figure 8 This is a schematic diagram of the spray tower structure.

[0019] Reference numerals: 1. Incinerator; 2. Flue gas duct; 3. Spray tower; 4. Central interception section; 41. Central duct; 42. Spiral guide vane; 43. Heat pipe; 44. Conical filter plate; 45. Filter hole; 46. Dead angle expansion plate; 47. Interception plate; 48. Ash discharge pipe; 5. Insulated discharge section; 51. Insulated cover plate; 52. Extension rod; 53. Counterweight; 54. Clip hole; 55. High temperature resistant clip; 56. Support platform; 57. Contact switch; 6. Backflow unblocking section; 61. Conical nozzle; 62. Eccentric nozzle; 63. Support frame; 64. Jet duct; 65. Pulse jet canister; 66. Pneumatic butterfly valve. Detailed Implementation

[0020] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0022] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] This invention proposes a waste treatment device for the preparation of aluminum alloy composite materials, such as... Figure 1 As shown, the system includes an incinerator 1, with a flue gas duct 2 fixedly installed on the top of the incinerator 1. The tail end of the flue gas duct 2 is fixedly connected to a spray tower 3 for spraying and reducing fine dust. The incinerator 1 is used to incinerate metal waste, thereby processing aluminum alloy composite material waste, recycling and reusing valuable parts, and using the spray tower 3 to spray and reduce dust in the exhaust gas.

[0026] like Figures 2 to 6 As shown, a central interception section 4 is provided on the flue gas duct 2. The central interception section 4 includes a central pipe 41 fixedly installed on the horizontal part of the flue gas duct 2. A spiral guide vane 42 is fixedly installed inside the central pipe 41. A conical filter plate 44 is fixedly installed inside the central pipe 41 and at the tail end of the spiral guide vane 42. The conical filter plate 44 adopts a conical structure and has filter holes 45.

[0027] In one implementation, the exhaust gas generated from aluminum alloy waste treatment forms a spiral gas flow through the central pipe 41 and the spiral guide plate 42. Since the gas flow direction is tangent to the conical filter plate 44, the gas spiral passes through the conical filter plate 44. The centrifugal force generated by the spiral flow throws large aluminum ash particles toward the inner wall of the central pipe 41, preventing them from adhering to the filter screen surface. This significantly reduces the filter screen clogging load, and the high temperature will not cause oil stains to adhere to the conical filter plate 44.

[0028] The gas is discharged through the conical filter plate 44. At the same time, the conical filter plate 44 uses the filter holes 45 to intercept large aluminum ash particles. The inclination angle of the cross section of the spiral guide plate 42 is the same as the inclination angle of the cross section of the conical filter plate 44, so that the spiral airflow is tangential to the cross section of the conical filter plate 44. The airflow flows spirally along the conical filter plate 44 and does not impact the conical filter plate 44 perpendicularly. Vertical air intake would directly press the particles into the filter holes and cause blockage. The airflow makes a swirling circular motion. The tangential spiral airflow continuously sweeps along the filter screen surface at high speed. The aluminum ash particles are dragged by the airflow. The airflow shear force continuously washes away the fine aluminum ash accumulated on the filter screen surface. The tangential spiral airflow allows the particles to pass parallel across the conical filter plate 44. The impact, puncture and friction loss are greatly reduced, and heavy particles are directly thrown away without contacting the conical filter plate 44.

[0029] It is worth noting that a discharge pipe 48 for discharging aluminum powder is fixedly installed below the central pipe 41. One end of the conical filter plate 44 is fixedly connected to the spiral guide plate 42. The spiral guide plate 42 has a built-in heat pipe 43. A dead angle expansion plate 46 is fixedly installed between the other end of the spiral guide plate 42 and the central pipe 41. The discharge pipe 48 is located near the tail end of the conical filter plate 44.

[0030] An interceptor plate 47 is fixedly installed inside the central duct 41 and on the side of the dead-angle expansion plate 46. The top of the interceptor plate 47 is fixedly connected to the conical filter plate 44. The spiral airflow first passes through the ash discharge pipe 48 and then flows to the interceptor plate 47. Finally, the aluminum ash particles are sent to the ash discharge pipe 48 by the spiral airflow and are intercepted by the interceptor plate 47, sending the aluminum ash particles into the ash discharge pipe 48. The central duct 41 is relatively long, and the ash discharge pipe 48 is located far from the incinerator 1. The bottom of the ash discharge pipe 48 is connected to an aluminum ash recovery box, which is in a closed state and close to the incinerator.

[0031] This invention guides the flue gas generated from the incineration of aluminum alloy waste into a spiral flow through a central pipe 41 and a spiral guide vane 42. The spiral guide vane 42 has the same inclination angle as the conical filter plate 44, ensuring the spiral airflow direction is tangential to the conical filter plate 44. Large aluminum ash particles are thrown to the central pipe 41 by centrifugal force, preventing them from directly impacting and damaging the conical filter plate 44, and avoiding blockage. Simultaneously, medium-sized aluminum ash particles are intercepted on the surface of the filter holes 45. Through high-speed cyclone sweeping, the aluminum ash particles are dragged by the airflow, and the airflow shear force continuously washes away the fine aluminum ash accumulated on the filter screen surface, improving the durability of the conical filter plate 44 and reducing wear.

[0032] As one implementation method, such as Figures 4 to 8 As shown, the ash discharge pipe 48 is provided with a gravity-sealed heat-insulating discharge section 5. The heat-insulating discharge section 5 includes a heat-insulating cover plate 51 that seals the ash discharge pipe 48. The end of the heat-insulating cover plate 51 is rotatably connected to the ash discharge pipe 48 through a rotating shaft. An extension rod 52 is fixedly installed at the end of the heat-insulating cover plate 51, and a counterweight block 53 is fixedly installed at the end of the extension rod 52.

[0033] The insulation cover plate 51 is used to seal the ash discharge pipe 48 to prevent heat loss. When aluminum ash accumulates on the insulation cover plate 51 at the ash discharge pipe 48, if the weight of the aluminum ash is greater than the weight of the counterweight block 53, the insulation cover plate 51 will rotate downward to open the ash discharge pipe 48 and quickly discharge the aluminum ash. The cover plate 51 can only be opened when a large amount of aluminum ash has accumulated to avoid frequent opening of the ash discharge pipe 48.

[0034] The ash discharge pipe 48 has a high-temperature resistant clip 55 inside, and the insulation cover plate 51 has a clip hole 54 that engages with the high-temperature resistant clip 55. When the clip hole 54 engages with the high-temperature resistant clip 55, the insulation cover plate 51 is in a horizontal state and is located in the middle of the ash discharge pipe 48.

[0035] The insulation cover 51 is supported by the locking holes 54 and high-temperature resistant clips 55, preventing it from opening slowly and tilting under the weight of the aluminum ash, thus ensuring rapid discharge of the aluminum ash. The original support force applied to the insulation cover 51 by the locking holes 54 and high-temperature resistant clips 55, the leverage force of the counterweight 53, and the weight of the insulation cover 51 and the aluminum ash are balanced.

[0036] When the clip 54 and the high-temperature resistant clip 55 separate, only the leverage force of the counterweight 53 and the weight of the insulation cover 51 and the aluminum ash remain. The sudden loss of force will cause the insulation cover 51 to quickly flip over and discharge the aluminum ash.

[0037] A support platform 56 is fixedly installed on the outer wall of the ash discharge pipe 48. A contact switch 57 is fixedly installed on the top of the support platform 56. When the extension rod 52 is in a horizontal state, the bottom of the extension rod 52 contacts the contact switch 57. The support platform 56 and the contact switch 57 limit the extension rod 52.

[0038] This invention uses the locking hole 54 and the high-temperature resistant clip 55 to apply a supporting force to the insulation cover 51, the leverage force of the counterweight 53, and the weight of the insulation cover 51 and the aluminum ash to achieve a balance. When the weight of the aluminum ash is greater than the weight of the counterweight 53, the insulation cover 51 rotates downward to open the ash discharge pipe 48, allowing the aluminum ash to be discharged quickly. The pipe can only be opened when a large amount of aluminum ash has accumulated, avoiding frequent opening of the ash discharge pipe 48. When the locking hole 54 and the high-temperature resistant clip 55 separate, only the leverage force of the counterweight 53 and the weight of the insulation cover 51 and the aluminum ash remain. The sudden loss of force will cause the insulation cover 51 to quickly flip over to discharge the aluminum ash and reset under the action of the counterweight 53, thereby achieving rapid discharge of aluminum ash and rapid sealing of the insulation cover 51, preventing heat loss from the ash discharge pipe 48.

[0039] As one implementation method, such as Figures 6 to 8 As shown, both ends of the central pipe 41 are provided with backflow clearing parts 6. The backflow clearing parts 6 include a support frame 63 fixedly installed at the end of the conical filter plate 44. A conical nozzle 61 is rotatably connected to the side of the support frame 63 and located inside the conical filter plate 44.

[0040] The dead zone expansion plate 46 has an internal jet pipe 64. One end of the jet pipe 64 is connected to the conical nozzle 61, and the other end of the jet pipe 64 is connected to the pulse jet canister 65. The rear end of the central pipe 41 is fixedly connected to the pneumatic butterfly valve 66.

[0041] The pulse jet canister 65 reduces the airflow velocity entering from the front end of the central duct 41 and generates a pulsed airflow. The pulsed airflow passes through the jet duct 64 and enters the conical nozzle 61. The contact switch 57 is electrically connected to the pulse jet canister 65 and the pneumatic butterfly valve 66. When the insulation cover 51 is opened, the insulation cover 51 drives the extension rod 52 to rotate, causing the extension rod 52 to separate from the contact switch 57. After the contact switch 57 is no longer under force, the pneumatic butterfly valve 66 reduces the gas flow, and the pulse jet canister 65 sprays gas.

[0042] A row of eccentric nozzles 62 is provided on the conical nozzle 61. The orientation of the eccentric nozzles 62 is tangent to the cross section of the conical nozzle 61. Since the eccentric nozzles 62 are tangent to the conical nozzle 61, air is ejected at the eccentric nozzles 62. Under the reaction force of the ejected gas, the conical nozzle 61 rotates, increasing the effective area of ​​the air jet. The ejected reverse airflow sprays onto the filter hole 45, thereby blowing the particles stuck in the filter hole 45 to the inner wall of the central pipe 41.

[0043] This invention uses an eccentric nozzle 62 positioned tangentially to spray air, utilizing the reaction force of the gas to rotate the conical nozzle 61, thereby increasing the spray area. Compared to multi-angle nozzles, the sprayed gas has a higher pressure, improving the effect of the reverse airflow in cleaning the filter 45. At the same time, the pneumatic butterfly valve 66 reduces the forward airflow, minimizing its impact on the reverse airflow cleaning process.

[0044] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A waste treatment device for the preparation of aluminum alloy composite materials, comprising an incinerator (1), wherein a flue gas duct (2) is fixedly installed on the top of the incinerator (1), and a spray tower (3) for spraying to reduce fine dust is fixedly connected to the tail end of the flue gas duct (2), characterized in that, Also includes: The central interception unit (4) for intercepting large aluminum powder particles includes a central pipe (41) fixedly installed in the horizontal part of the flue gas pipe (2). A spiral guide vane (42) is fixedly installed inside the central pipe (41). A conical filter plate (44) is fixedly installed inside the central pipe (41) and at the tail end of the spiral guide vane (42). The conical filter plate (44) adopts a conical structure and has filter holes (45) on it. The inclination angle of the cross section of the spiral guide vane (42) is the same as the inclination angle of the cross section of the conical filter plate (44). A spiral flow of gas is formed at the spiral guide vane (42). The gas flow direction is tangent to the conical filter plate (44). A discharge pipe (48) for discharging aluminum powder is fixedly installed below the central pipe (41). The ash discharge pipe (48) is provided with a gravity-sealed heat-insulating discharge section (5), and both ends of the central pipe (41) are provided with backflow drainage sections (6).

2. The waste treatment device for the preparation of aluminum alloy composite materials according to claim 1, characterized in that, One end of the conical filter plate (44) is fixedly connected to the spiral guide plate (42), the spiral guide plate (42) has a built-in heat pipe (43), the other end of the spiral guide plate (42) is fixedly installed with a dead angle expansion plate (46) between it and the central pipe (41), and the ash discharge pipe (48) is located near the tail end of the conical filter plate (44).

3. The waste treatment device for the preparation of aluminum alloy composite materials according to claim 2, characterized in that, An interceptor plate (47) is fixedly installed inside the central pipe (41) and on the side of the dead angle expansion plate (46). The top of the interceptor plate (47) is fixedly connected to the conical filter plate (44). The spiral flow of gas first passes through the ash discharge pipe (48) and then flows to the interceptor plate (47).

4. The waste treatment device for the preparation of aluminum alloy composite materials according to claim 3, characterized in that, The heat-insulating discharge section (5) includes a heat-insulating cover plate (51) that closes the ash discharge pipe (48). The end of the heat-insulating cover plate (51) is rotatably connected to the ash discharge pipe (48) through a rotating shaft. An extension rod (52) is fixedly installed at the end of the heat-insulating cover plate (51), and a counterweight (53) is fixedly installed at the end of the extension rod (52).

5. The waste treatment device for the preparation of aluminum alloy composite materials according to claim 4, characterized in that, The ash discharge pipe (48) has a high-temperature resistant clip (55) inside, and the heat insulation cover plate (51) has a clip hole (54) for engaging with the high-temperature resistant clip (55).

6. The waste treatment device for the preparation of aluminum alloy composite materials according to claim 5, characterized in that, When the card hole (54) is engaged with the high temperature resistant clip (55), the heat insulation cover plate (51) is in a horizontal state, and the heat insulation cover plate (51) is located in the middle of the ash discharge pipe (48).

7. The waste treatment device for the preparation of aluminum alloy composite materials according to claim 6, characterized in that, A support platform (56) is fixedly installed on the outer wall of the ash discharge pipe (48), and a contact switch (57) is fixedly installed on the top of the support platform (56). When the extension rod (52) is in a horizontal state, the bottom of the extension rod (52) is in contact with the contact switch (57).

8. The waste treatment device for the preparation of aluminum alloy composite materials according to claim 7, characterized in that, The backflow clearing section (6) includes a support frame (63) fixedly installed at the end of the conical filter plate (44). A conical nozzle (61) is rotatably connected to the side of the support frame (63) and inside the conical filter plate (44). A row of eccentric nozzles (62) is opened on the conical nozzle (61). The orientation of the eccentric nozzles (62) is tangent to the cross section of the conical nozzle (61).

9. A waste treatment device for the preparation of aluminum alloy composite materials according to claim 8, characterized in that, The dead angle expansion plate (46) has an air jet pipe (64) inside. One end of the air jet pipe (64) is connected to the conical nozzle (61), and the other end of the air jet pipe (64) is connected to the pulse jet canister (65).

10. A waste treatment device for the preparation of aluminum alloy composite materials according to claim 9, characterized in that, The tail end of the central pipe (41) is fixedly connected to the pulse jet canister (65), the front end of the central pipe (41) is fixedly connected to the pneumatic butterfly valve (66), and the contact switch (57) is electrically connected to the pulse jet canister (65) and the pneumatic butterfly valve (66).

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