A waste incineration fly ash leaching desalination treatment method and device

Abstract

The application belongs to the technical field of garbage disposal, and particularly relates to a garbage incineration fly ash leaching desalination treatment method and device, which comprises a leaching desalination pool, the top surface of the leaching desalination pool is provided with an electric guide rail, the electric guide rail is slidably connected with a moving block, a hollow groove is formed in the moving block, the top surface of the moving block is provided with a feeding pipe which is in communication with the hollow groove, the feeding pipe is used for injecting fly ash into the hollow groove, and the bottom surface of the moving block is provided with a group of discharge pipes which are in communication with the hollow groove; the position of the moving pipe is adjusted according to the water level in the leaching desalination pool, the connecting groove on the moving pipe is immersed in water, the fly ash is injected into the feeding pipe through a feeder, the fly ash enters the hollow groove at this time, and then is directly discharged into water through the connecting groove, so that the fly ash particles are prevented from floating due to air disturbance.

Description

Technical Field

[0001] This invention belongs to the field of waste treatment technology, specifically a method and apparatus for leaching and desalination of fly ash from waste incineration. Background Technology

[0002] Waste incineration is an important way to reduce and recycle municipal solid waste. However, during the incineration process, the flue gas purification system captures a large amount of fine particulate matter, namely fly ash. Because it is rich in heavy metals (such as lead and cadmium) and trace amounts of persistent organic pollutants such as dioxins, it is generally classified as hazardous waste. If not properly disposed of, these toxic and harmful substances can easily leach and migrate into the environment, causing serious secondary pollution to soil and groundwater. Therefore, fly ash must undergo specialized treatment such as stabilization / solidification before final landfilling or resource utilization to effectively control its environmental risks.

[0003] In current mainstream fly ash treatment processes, collected fly ash is injected into a washing tank. Through sedimentation, soluble salts and some leached pollutants in the fly ash are transferred to the water, forming a leachate. Insoluble solid particles, under hydraulic action, settle to the bottom of the tank, forming sediment. Subsequently, the leachate and sediment are effectively separated. The pollutant-rich leachate undergoes specialized purification, while the sediment requires further stabilization / solidification and other advanced treatments to achieve the goal of rendering the fly ash harmless.

[0004] In current wet fly ash treatment processes, the water washing tanks used to receive fly ash are usually open. When dry, lightweight fly ash is directly poured into the tank, the fly ash particles are easily dispersed again due to mechanical drop and air disturbance within the tank. This unorganized dispersion not only causes direct material loss, but more seriously, these dispersed fly ash particles carry heavy metals, which can cause secondary pollution to the operating area and the surrounding environment. Therefore, this invention provides a method and apparatus for leaching and desalinating fly ash from waste incineration. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a waste incineration fly ash leaching and desalination treatment device, including a leaching and desalination tank. An electric guide rail is provided on the top surface of the leaching and desalination tank, and a moving block is slidably connected to the electric guide rail. A hollow groove is opened inside the moving block, and a feed pipe communicating with the hollow groove is provided on the top surface of the moving block. The feed pipe is used to inject fly ash into the hollow groove. A set of discharge pipes communicating with the hollow groove is provided on the bottom surface of the moving block. A moving pipe is provided inside the discharge pipe. A through hole is opened at the top end of the moving pipe, and a connecting groove is opened on the side wall of the moving pipe. A moving component for controlling the movement of the moving pipe is provided on the moving block.

[0007] Preferably, the moving component includes a hydraulic rod fixed to the bottom surface of the moving block, a connecting plate movably connected to the surface of the moving tube, a steel cable fixedly connected to the top surface of the connecting plate, and the end of the steel cable away from the connecting plate being fixedly connected to the output end of the hydraulic rod.

[0008] Preferably, a hollow block is fixedly connected to the outer wall of the moving tube, the connecting groove communicates with the hollow block, multiple sets of discharge holes are opened on the bottom surface of the hollow block, and a set of first drive blades is fixedly connected to the outer wall of the moving tube.

[0009] Preferably, a support rod is fixedly connected to the inner wall of the discharge pipe, and a sealing disc is fixedly connected to one end of the support rod near the moving pipe. The sealing disc is used to seal the through hole. A water inlet pipe communicating with the hollow groove is fixedly connected to the top of the moving block, and a one-way water inlet valve is provided in the water inlet pipe.

[0010] Preferably, the movable block has a cavity, and the side wall of the movable block is provided with a liquid inlet pipe communicating with the cavity. A liquid inlet check valve is provided in the liquid inlet pipe. A push plate is slidably connected in a sealed manner in the cavity. A spring is fixedly connected between the top surface of the push plate and the inner wall of the cavity. A liquid outlet pipe communicating with the hollow groove is provided in the cavity. A pressure valve is provided in the liquid outlet pipe. A control component for controlling the movement of the push plate is provided in the hollow groove.

[0011] Preferably, the control component includes a guide groove formed in a hollow groove, a float plate slidably connected to the inner wall of the guide groove, a hollow elastic block fixedly connected to the top surface of the inner wall of the hollow groove, and a connecting pipe communicating between the elastic block and the cavity.

[0012] Preferably, a ring is rotatably connected to the inner wall of the discharge pipe, a set of second drive blades is fixedly connected to the inner wall of the ring, a fixing rod is fixedly connected to the top surface of the ring, a set of connecting lines is fixedly connected to the outer wall of the fixing rod, and a ball is fixedly connected to the end of the connecting line away from the fixing rod.

[0013] A method for leaching and desalinizing fly ash from waste incineration, the method employing the aforementioned waste incineration fly ash leaching and desalinizing treatment device, the method comprising the following steps:

[0014] S1: By injecting water into the leaching desalination tank, the ratio of water to fly ash is 2:1 to 4:1. Adjust the position of the moving pipe according to the water level in the leaching desalination tank so that the hollow block is in the water.

[0015] S2: Connect a flexible hose to the feed pipe. Connect the feed end of the hose to the feeder. The feeder injects fly ash into the hollow trough through airflow and finally discharges it into the water through the discharge hole.

[0016] S3: When the fly ash is discharged into the water, the electric rail controls the moving block to move so that the fly ash is discharged and mixed with the water during the movement. After the fly ash is completely discharged into the water, mix for 10 to 30 minutes and let it stand to separate the leachate and sediment.

[0017] S4: The leachate is pumped away from above the leaching desalination tank, and then the residual liquid on the sediment is separated.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention adjusts the position of the moving pipe according to the water level in the leaching desalination tank, allowing the connecting groove on the moving pipe to enter the water. Fly ash is injected into the feed pipe by a feeder, whereby the fly ash enters the hollow trough and is then discharged into the water from the connecting groove. During the discharge process, the moving block is moved by the electric guide rail to allow the fly ash to be moved and discharged into the water, avoiding the fly ash particles from drifting due to air disturbance. After all the fly ash is injected into the water, the fly ash is allowed to separate in the water to obtain leachate and sediment.

[0020] 2. This invention moves the output end of the hydraulic rod upward, at which point the steel cable pulls down the connecting plate, causing the connecting plate to move all the moving tubes upward simultaneously. When the output end of the hydraulic rod moves downward, all the moving tubes move downward synchronously due to gravity, thus achieving the effect of synchronously adjusting the position of all the moving tubes. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the processing device in this invention;

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure after the leaching and desalination tank is removed;

[0024] Figure 3 This is a schematic diagram of the internal structure of the movable block in this invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the discharge pipe, the moving plate, and the hollow block in this invention;

[0026] Figure 5 This is a partial structural cross-sectional view of the discharge pipe in this invention;

[0027] Figure 6 This is a flowchart of the method in this invention.

[0028] In the diagram: 1. Leaching desalination tank; 2. Electrical guide rail; 3. Moving block; 4. Feed pipe; 5. Hollow trough; 6. Discharge pipe; 7. Moving pipe; 8. Connecting plate; 9. Hollow block; 10. Connecting groove; 11. Discharge hole; 12. First drive blade; 13. Hydraulic rod; 14. Steel cable; 15. Through hole; 16. Water inlet pipe; 17. Support rod; 18. Sealing plate; 19. Cavity; 20. Liquid inlet pipe; 21. Liquid outlet pipe; 22. Elastic block; 23. Connecting pipe; 24. Push plate; 25. Float plate; 26. Guide groove; 27. Ring; 28. Second drive blade; 29. ​​Fixed rod; 30. Connecting line; 31. Sphere. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1: As Figures 1 to 4 As shown in the embodiment of the present invention, a waste incineration fly ash treatment device includes a leaching desalination tank 1. An electric guide rail 2 is provided on the top surface of the leaching desalination tank 1, and a moving block 3 is slidably connected to the electric guide rail 2. A hollow groove 5 is formed inside the moving block 3, and a feed pipe 4 communicating with the hollow groove 5 is provided on the top surface of the moving block 3. The feed pipe 4 is used to inject fly ash into the hollow groove 5. A set of discharge pipes 6 communicating with the hollow groove 5 is provided on the bottom surface of the moving block 3. A moving pipe 7 is provided inside the discharge pipe 6. A through hole 15 is formed at the top end of the moving pipe 7, and a connecting groove 10 is formed on the side wall of the moving pipe 7. A moving component for controlling the movement of the moving pipe 7 is provided on the moving block 3.

[0031] This application injects water into the leaching desalination tank 1, with a water-to-fly ash ratio of 1:2 to 1:4. The position of the moving pipe 7 is adjusted according to the water level in the leaching desalination tank 1, allowing the moving component to control the connecting groove 10 on the moving pipe 7 to enter the water. A hose can be connected to the feed pipe 4, and the feed end of the hose can be connected to a feeder. The feeder injects fly ash into the feed pipe 4 through airflow. At this time, the fly ash will enter the hollow trough 5. After entering the hollow trough 5, the fly ash will enter the discharge pipe 6, and then pass through the moving pipe 7, and finally be discharged into the water from the connecting groove 10. During the discharge process, the electric guide rail 2 controls the moving block 3 to move so that the fly ash can be moved and discharged into the water. Through the above mechanism, the fly ash can be directly injected into the water, avoiding the fly ash particles from drifting due to air disturbance. After all the fly ash is injected into the water, wait for the fly ash to separate in the water to obtain leachate and sediment.

[0032] The moving component includes a hydraulic rod 13 fixed to the bottom surface of the moving block 3. A connecting plate 8 is movably connected to the surface of the moving tube 7. A steel cable 14 is fixedly connected to the top surface of the connecting plate 8. The end of the steel cable 14 away from the connecting plate 8 is fixedly connected to the output end of the hydraulic rod 13. By moving the output end of the hydraulic rod 13 upward, the steel cable 14 will pull the connecting plate 8 downward, causing the connecting plate 8 to drive all the moving tubes 7 to move upward simultaneously. When the output end of the hydraulic rod 13 moves downward, all the moving tubes 7 will move downward synchronously due to gravity, so as to achieve the effect of synchronously adjusting the position of all the moving tubes 7.

[0033] A hollow block 9 is fixedly connected to the outer wall of the moving tube 7. The connecting groove 10 communicates with the hollow block 9. Multiple sets of discharge holes 11 are opened on the bottom surface of the hollow block 9. A set of first drive blades 12 are fixedly connected to the outer wall of the moving tube 7.

[0034] When fly ash is discharged from the connecting trough 10, it enters the hollow block 9 and is then evenly discharged from the discharge hole 11, so that the fly ash can be discharged into the water more evenly, improving the subsequent sedimentation efficiency. During the discharge process, the hollow block 9 is kept in the water. At this time, the hydraulic rod 13 can control the moving plate to move up and down. During the movement, the hollow block 9 is always kept in the water. During the movement, the first drive blade 12 will rotate with the thrust of the water flow, thereby rotating the moving pipe 7, which in turn rotates the hollow block 9, thereby increasing the range of fly ash discharge in the water. At the same time, it can also agitate and mix the water and fly ash to further improve the subsequent sedimentation efficiency.

[0035] A support rod 17 is fixedly connected to the inner wall of the discharge pipe 6. A sealing disc 18 is fixedly connected to one end of the support rod 17 near the moving pipe 7. The sealing disc 18 is used to seal the through hole 15. A water inlet pipe 16 communicating with the hollow trough 5 is fixedly connected to the top of the moving block 3. A one-way valve for water inlet is installed in the water inlet pipe 16. Since fly ash is likely to remain in the hollow trough 5 when it passes through it, the moving pipe 7 can be controlled to move upward by the hydraulic rod 13 until the sealing disc 18 seals the through hole 15. At this time, water can be injected into the hollow trough 5 from the water inlet pipe 16. After the hollow trough 5 is full of water, the moving pipe 7 is controlled to move downward. At this time, the water in the hollow trough 5 will pass through the discharge pipe 6, the through hole 15, the moving pipe 7 and the connecting groove 10, and finally be discharged into the leaching desalination tank 1.

[0036] The movable block 3 has a cavity 19 inside. The side wall of the movable block 3 is provided with a liquid inlet pipe 20 communicating with the cavity 19. A liquid inlet check valve is provided in the liquid inlet pipe 20. A push plate 24 is slidably connected in a sealed manner in the cavity 19. A spring is fixedly connected between the top surface of the push plate 24 and the inner wall of the cavity 19. A liquid outlet pipe 21 communicating with the hollow groove 5 is provided in the cavity 19. A pressure valve is provided in the liquid outlet pipe 21. A control component for controlling the movement of the push plate 24 is provided in the hollow groove 5.

[0037] The agent can be injected into the cavity 19 by means of the inlet pipe 20. During the injection process, the agent will push the pusher plate 24 to move upward. After the fly ash is completely injected into the water, the hollow tank 5 will be cleaned by water injection. During this process, the pusher plate 24 can be controlled to move downward by means of the control component. At this time, the pusher plate 24 will push the agent in the hollow block 9 to be discharged from the outlet pipe 21 into the water in the hollow tank 5, so that the agent and water are mixed. Then, the agent is discharged into the leaching desalination tank along with the water. At this time, the agent can accelerate the precipitation of heavy metals.

[0038] The control component includes a guide groove 26 formed in a hollow groove 5. A float plate 25 is slidably connected to the inner wall of the guide groove 26. A hollow elastic block 22 is fixedly connected to the top surface of the inner wall of the hollow groove 5. A connecting pipe 23 connects the elastic block 22 and the cavity 19. When water is injected into the hollow groove 5, the water level will rise. At this time, the float plate 25 will rise with the water level until it pushes the elastic block 22. When the elastic block 22 is pushed, the gas inside it will enter the cavity 19 through the connecting pipe 23. At this time, the gas will push the push plate 24, thereby allowing the push plate 24 to push the agent out of the outlet pipe 21 into the water.

[0039] Example 2: Figure 5As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the inner wall of the discharge pipe 6 is rotatably connected to a ring 27, the inner wall of the ring 27 is fixedly connected to a set of second drive blades 28, the top surface of the ring 27 is fixedly connected to a fixing rod 29, the outer wall of the fixing rod 29 is fixedly connected to a set of connecting lines 30, and the end of the connecting line 30 away from the fixing rod 29 is fixedly connected to a ball 31; when the water in this application is discharged from the hollow trough 5, the water flow will pass through the discharge pipe 6, and at this time the water flow will drive the second drive blades 28 to rotate, thereby causing the ring 27 to rotate, and the ball 31 will also rotate, thereby stirring the mixture of water and medicine to improve the mixing effect of medicine and water, thereby improving the subsequent heavy metal fixation effect.

[0040] like Figure 6 As shown, a method for treating fly ash from waste incineration, using the aforementioned fly ash treatment device, includes the following steps:

[0041] S1: By injecting water into the leaching desalination tank 1, the ratio of water to fly ash is 1:2 to 1:4. Adjust the position of the moving pipe 7 according to the water level in the leaching desalination tank 1 so that the hollow block 9 is in the water.

[0042] S2: Connect a hose to the feed pipe 4. Connect the feed end of the hose to the feeder. The feeder injects fly ash into the hollow trough 5 through airflow and finally discharges it into the water through the discharge hole 11.

[0043] S3: When the fly ash is discharged into the water, the electric rail controls the moving block to move so that the fly ash is discharged and mixed with the water during the movement. After the fly ash is completely discharged into the water, mix for 10 to 30 minutes and let it stand to separate the leachate and sediment.

[0044] S4: The leachate is pumped away from above the leaching desalination tank, and then the residual liquid on the sediment is separated.

[0045] Working principle: Water is injected into the leaching and desalination tank 1, with a water-to-fly ash ratio of 1:2 to 1:4. The position of the moving pipe 7 is adjusted according to the water level in the leaching and desalination tank 1, allowing the moving component to control the connecting groove 10 on the moving pipe 7 to enter the water. A hose can be connected to the feed pipe 4, and the feed end of the hose can be connected to a feeder. The feeder injects fly ash into the feed pipe 4 through airflow. The fly ash then enters the hollow trough 5, and after entering the hollow trough 5, it enters the discharge pipe 6, then passes through the moving pipe 7, and finally is discharged into the water through the connecting groove 10. During the discharge process, the electric guide rail 2 controls the moving block 3 to move, allowing the fly ash to be moved and discharged into the water. Through the above mechanism, fly ash can be directly injected into the water, avoiding fly ash particles from drifting due to air disturbance. After all the fly ash is injected into the water, wait for the fly ash to separate in the water to obtain leachate and sediment. By moving the output end of the hydraulic rod 13 upward, at this time... The steel cable 14 pulls down the connecting plate 8, causing the connecting plate 8 to move all the moving pipes 7 upwards simultaneously. When the output end of the hydraulic rod 13 moves downwards, all the moving pipes 7 will move downwards synchronously due to gravity, so as to achieve the effect of synchronous adjustment of the position of all the moving pipes 7. When the fly ash is discharged from the connecting groove 10, it will enter the hollow block 9 and then be evenly discharged from the discharge hole 11, so that the fly ash can be discharged into the water more evenly, improving the subsequent sedimentation efficiency. During the discharge process, the hollow block 9 is in the water. At this time, the hydraulic rod 13 can control the moving plate to move up and down. During the movement, the hollow block 9 is always in the water. During the movement, the first drive blade 12 will rotate with the thrust of the water flow, thereby rotating the moving pipes 7 and the hollow block 9, thereby increasing the range of fly ash discharge in the water. At the same time, it can also stir and mix the water and fly ash to further improve the subsequent sedimentation efficiency.

[0046] Since fly ash is likely to remain in the hollow trough 5 when it passes through it, the moving pipe 7 can be moved upward by the hydraulic rod 13 until the sealing plate 18 seals the through hole 15. Then water can be injected into the hollow trough 5 through the water inlet pipe 16. After the hollow trough 5 is full of water, the moving pipe 7 can be moved downward. The water in the hollow trough 5 will then pass through the discharge pipe 6, through hole 15, moving pipe 7 and connecting trough 10, and finally be discharged into the leaching desalination tank 1.

[0047] Liquid reagents can be injected into the cavity 19 via the inlet pipe 20. During the injection process, the reagents will push the pusher plate 24 upward. After the fly ash is completely injected into the water, the hollow tank 5 will be cleaned with water. During this process, the pusher plate 24 can be controlled to move downward with the control component. At this time, the pusher plate 24 will push the reagents in the hollow block 9 to be discharged from the outlet pipe 21 into the water in the hollow tank 5, so that the reagents and water can be mixed and then discharged into the sediment along with the water. At this time, the reagents can accelerate the precipitation of heavy metals. When water is injected into the hollow tank 5, the water level will rise. At this time, the float plate 25 will rise with the water level until it pushes the elastic block 22. When the elastic block 22 is pushed, the gas inside it will enter the cavity 19 through the connecting pipe 23. At this time, the gas will push the pusher plate 24, thereby pushing the reagents from the outlet pipe 21 into the water.

[0048] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0049] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste incineration fly ash leaching desalination treatment device, comprising a leaching desalination tank (1), wherein an electric rail (2) is provided on the top surface of the leaching desalination tank (1), and a moving block (3) is slidably connected on the electric rail (2). Its features are: The movable block (3) has a hollow groove (5) inside, and the top surface of the movable block (3) is provided with a feed pipe (4) that communicates with the hollow groove (5). The feed pipe (4) is used to inject fly ash into the hollow groove (5). The bottom surface of the moving block (3) is provided with a set of discharge pipes (6) that communicate with the hollow groove (5). The discharge pipe (6) is provided with a moving pipe (7). The top end of the moving pipe (7) is provided with a through hole (15). The side wall of the moving pipe (7) is provided with a connecting groove (10). The moving block (3) is provided with a moving component for controlling the moving pipe (7) to move. The moving component includes a hydraulic rod (13) fixed to the bottom surface of the moving block (3), a connecting plate (8) movably connected to the surface of the moving tube (7), a steel cable (14) fixedly connected to the top surface of the connecting plate (8), and the end of the steel cable (14) away from the connecting plate (8) fixedly connected to the output end of the hydraulic rod (13). A hollow block (9) is fixedly connected to the outer wall of the moving tube (7), the connecting groove (10) is connected to the hollow block (9), the bottom surface of the hollow block (9) has multiple sets of discharge holes (11), and a set of first drive blades (12) is fixedly connected to the outer wall of the moving tube (7).

2. The waste incineration fly ash leaching and desalination treatment device according to claim 1, characterized in that: A support rod (17) is fixedly connected to the inner wall of the discharge pipe (6). A sealing disc (18) is fixedly connected to one end of the support rod (17) near the moving pipe (7). The sealing disc (18) is used to seal the through hole (15). A water inlet pipe (16) communicating with the hollow groove (5) is fixedly connected to the top of the moving block (3). A one-way valve for water inlet is provided in the water inlet pipe (16).

3. The waste incineration fly ash leaching desalination treatment device according to claim 2, characterized in that: The movable block (3) has a cavity (19) inside. The side wall of the movable block (3) is provided with an inlet pipe (20) that communicates with the cavity (19). The inlet pipe (20) is provided with an inlet one-way valve. The cavity (19) is sealed and slidably connected with a push plate (24). The top surface of the push plate (24) is fixedly connected to the inner wall of the cavity (19) with a spring. The cavity (19) is provided with an outlet pipe (21) that communicates with the hollow groove (5). The outlet pipe (21) is provided with a pressure valve. The hollow groove (5) is provided with a control component that controls the movement of the push plate (24).

4. The waste incineration fly ash leaching and desalination treatment device according to claim 3, characterized in that: The control component includes a guide groove (26) opened in the hollow groove (5), a float plate (25) is slidably connected to the inner wall of the guide groove (26), a hollow elastic block (22) is fixedly connected to the top surface of the inner wall of the hollow groove (5), and a connecting pipe (23) is connected between the elastic block (22) and the cavity (19).

5. The waste incineration fly ash leaching and desalination treatment device according to claim 4, characterized in that: The inner wall of the discharge pipe (6) is rotatably connected to a ring (27), the inner wall of the ring (27) is fixedly connected to a set of second drive blades (28), the top surface of the ring (27) is fixedly connected to a fixing rod (29), the outer wall of the fixing rod (29) is fixedly connected to a set of connecting lines (30), and the end of the connecting line (30) away from the fixing rod (29) is fixedly connected to a ball (31).

6. A method for leaching and desalinizing fly ash from waste incineration, the method employing the waste incineration fly ash leaching and desalinizing treatment device according to any one of claims 1-5, characterized in that: The method includes the following steps: S1: By injecting water into the leaching desalination tank (1), the ratio of water to fly ash is 2:1 to 4:

1. Adjust the position of the moving pipe (7) according to the water level in the leaching desalination tank (1) so that the hollow block (9) is in the water. S2: Connect a hose to the feed pipe (4), and connect the feed end of the hose to the feeder. The feeder injects fly ash into the hollow trough (5) through airflow, and finally discharges it into the water through the discharge hole (11). S3: When the fly ash is discharged into the water, the electric rail (2) controls the moving block (3) to move so that the fly ash is discharged and mixed with the water during the movement. After the fly ash is completely discharged into the water, mix for 10~30 minutes and let it stand to separate the leachate and sediment. S4: The leachate is pumped away from above the leaching desalination tank (1), and then the residual liquid on the sediment is separated.

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