Stabilization treatment device for household garbage incineration fly ash

Abstract

The utility model discloses life garbage incineration fly ash stabilization treatment device relates to environmental protection technical field, including jar body and apron, the top of apron is provided with servo motor, the drive end of servo motor is connected with connecting rod, in the utility model, when the stabilization treatment of life garbage incineration fly ash is carried out, after fly ash is put into jar body from fly ash inlet, and stabilizer is put into jar body from stabilizer adding port, start servo motor and drive connecting rod rotation. The mixing of the stirring part of the radiation distribution on the connecting rod is preliminary to the upper material, the first stirring vane of parabolic type stirs the material of jar wall to the center, and the second stirring vane of undulating shape enhances the mixing uniformity of the middle part, and the spiral stirring vane of narrow top and wide bottom transports the lower material upward, realizes up and down circulation, and the U -shaped stirring rod of opening upward stirs the bottom material and prevents accumulation. Each component is all -round stirred from different positions with different structures, makes fly ash and stabilizer mix evenly, and improves fly ash stabilization treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically to a device for stabilizing fly ash from municipal solid waste incineration. Background Technology

[0002] Fly ash from municipal solid waste incineration is a fine particulate matter generated during the high-temperature combustion of municipal solid waste in an incinerator (usually above 850°C) and collected by dust removal equipment (such as bag filters and electrostatic precipitators). It is classified as hazardous waste. Its particle size is small (mostly micrometers), its specific surface area is large, its composition is complex, and it contains harmful substances—not only is it enriched with heavy metals such as lead, cadmium, and mercury, but it may also contain persistent organic pollutants such as dioxins and furans. If directly discharged or disposed of, it can easily migrate and spread through soil, water bodies, and the atmosphere, posing potential harm to the ecological environment and human health. Therefore, it must undergo stabilization and harmless treatment before final landfilling or resource utilization, making it one of the key pollutants that need to be controlled in the municipal solid waste incineration process.

[0003] In the stabilization treatment of fly ash from municipal solid waste incineration, the uniformity of mixing between fly ash and stabilizer directly affects the stabilization effect. Existing treatment devices often have simplistic mixing structures, consisting of a single mixing component or a simple combination, making it difficult to achieve comprehensive and uniform mixing of fly ash and stabilizer in different areas of the tank. This often results in uneven mixing of fly ash and stabilizer, either with localized excess stabilizer or with insufficient stabilization of harmful substances in the fly ash. Consequently, the quality of fly ash stabilization treatment is affected, failing to meet environmental protection requirements and negatively impacting the harmless disposal of municipal solid waste incineration fly ash. Summary of the Invention

[0004] The purpose of this invention is to provide a device for stabilizing fly ash from municipal solid waste incineration, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides a device for stabilizing fly ash from municipal solid waste incineration, comprising a tank and a cover plate. A servo motor is installed on the top of the cover plate, and a connecting rod is connected to the drive end of the servo motor. An agitator is installed on the outer wall of the connecting rod. The agitator consists of multiple cylindrical rods arranged in a crisscross pattern, with the central axis connecting rod as the intersection point, and evenly distributed radially. A first agitator blade, a second agitator blade, a spiral agitator blade, and a U-shaped agitator rod are sequentially and fixedly installed on the outer wall of the connecting rod. The first agitator blade extends parabolically towards the inner wall of the tank. The second agitator blade is wavy in shape, and the other end of the second agitator blade is fixedly connected to the bottom of the first agitator blade. The spiral agitator blade is a spiral shape that is narrower at the top and wider at the bottom. The U-shaped agitator rod is a U-shaped shape with the opening facing upwards.

[0006] Furthermore, a fly ash inlet and a stabilizer addition inlet are fixedly installed on the top of the cover plate, and both the fly ash inlet and the stabilizer addition inlet are threaded with sealing caps.

[0007] Furthermore, the bottom of the tank has a hemispherical structure that bulges downwards, and a cylindrical discharge pipe is connected to the center of the bottom. A control valve is installed on the discharge pipe.

[0008] Furthermore, the cover plate is disposed on the top of the tank body, and mounting blocks are fixedly installed on both the tank body and the cover plate, with fixing bolts threadedly connected to the top of the mounting blocks.

[0009] Furthermore, a rubber layer is integrally formed at the position where the cover plate abuts against the tank body.

[0010] Furthermore, a protective cover is installed on the top of the cover plate, and the protective cover is fitted over the outside of the servo motor.

[0011] Furthermore, the cross-section of the U-shaped stirring rod is set to be circular.

[0012] Furthermore, the stirring components, the first stirring blade, the second stirring blade, the spiral stirring blade, and the U-shaped stirring rod are all made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, when stabilizing fly ash from municipal solid waste incineration, the fly ash is added to the tank through the fly ash inlet and the stabilizer through the stabilizer addition inlet. Then, a servo motor is activated to rotate the connecting rod. Radially distributed stirring components on the connecting rod initially mix the upper material; parabolic first stirring blades agitate the material on the tank wall towards the center, while wavy second stirring blades enhance the uniformity of mixing in the middle; a spiral stirring blade, narrow at the top and wide at the bottom, conveys the lower material upwards, achieving vertical circulation; and an upward-opening U-shaped stirring rod stirs the material at the bottom to prevent accumulation. All components, from different positions and with different structures, agitate from all directions, ensuring uniform mixing of the fly ash and stabilizer, thus improving the fly ash stabilization treatment effect.

[0014] 2. In this utility model, the hemispherical structure at the bottom of the tank and its downward protrusion allow the processed material to naturally converge towards the discharge pipe at the center of the bottom under the action of gravity, avoiding material residue at the bottom of the tank. The control valve on the discharge pipe can flexibly control the discharge time and discharge volume of the material, making it convenient to carry out the discharge operation according to actual needs. This ensures the full discharge of the material and improves the convenience and controllability of the discharge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the connection structure between the servo motor and the connecting rod in this utility model; Figure 4 for Figure 2 Enlarged view of the structure at point A in the middle.

[0016] In the diagram: 1. Tank body; 2. Servo motor; 3. Connecting rod; 4. Agitator; 5. First agitator blade; 6. Second agitator blade; 7. Spiral agitator blade; 8. U-shaped agitator rod; 9. Fly ash inlet; 10. Stabilizer inlet; 11. Protective cover; 12. Discharge pipe; 13. Cover plate; 14. Mounting block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 This utility model provides a technical solution: See Figures 1-4 As shown, the municipal solid waste incineration fly ash stabilization treatment device includes a tank 1 and a cover plate 13. A servo motor 2 is installed on the top of the cover plate 13. The drive end of the servo motor 2 is connected to a connecting rod 3. An agitator 4 is installed on the outer wall of the connecting rod 3. The agitator 4 consists of multiple cylindrical rods arranged in a crisscross pattern, with the central axis connecting rod 3 as the intersection point, and is evenly distributed radially. The outer wall of the connecting rod 3 is sequentially and fixedly equipped with a first agitator blade 5, a second agitator blade 6, a spiral agitator blade 7, and a U-shaped agitator rod 8. The first agitator blade 5 extends parabolically toward the inner wall of the tank 1. The second agitator blade 6 is wavy in shape. The other end of the second agitator blade 6 is fixedly connected to the bottom of the first agitator blade 5. The spiral agitator blade 7 is spiral-shaped with a narrow top and a wide bottom. The U-shaped agitator rod 8 is U-shaped with the opening facing upwards.

[0019] When stabilizing fly ash from municipal solid waste incineration, the fly ash is first fed into tank 1 through fly ash inlet 9, and the stabilizer is added through stabilizer addition inlet 10. Then, servo motor 2 is started. The drive end of servo motor 2 drives connecting rod 3 to rotate, and the stirring element 4 on connecting rod 3 rotates with it. Since the stirring element 4 consists of multiple cylindrical rods evenly distributed radially around connecting rod 3, it can initially mix the fly ash and stabilizer in the upper part of tank 1 when rotating. At the same time, the first stirring blade 5 on connecting rod 3 extends parabolically towards the inner wall of tank 1, and can stir the material near the tank wall towards the center when rotating; the second stirring blade 6 is wavy and connected to the bottom of the first stirring blade 5, and can stir the material in the middle and enhance the uniformity of mixing when rotating; the spiral stirring blade 7 is spiral-shaped with a narrow top and a wide bottom, and can transport the material in the lower part of tank 1 upward when rotating, realizing the circulation of materials between the upper and lower parts; the U-shaped stirring rod 8 is U-shaped with an upward opening, and can stir the material at the bottom of tank 1 when rotating, preventing the material from accumulating at the bottom.

[0020] The mixing components 4, the first mixing blade 5, the second mixing blade 6, the spiral mixing blade 7, and the U-shaped mixing rod 8 mix the material from different positions and with different structural forms. This can cover the fly ash and stabilizer in the tank 1 in all directions, making the two mix more evenly, thereby improving the effect of fly ash stabilization treatment and ensuring that the harmful substances in the fly ash are fully stabilized.

[0021] See Figure 1-2 The top of the cover plate 13 is fixedly installed with a fly ash inlet 9 and a stabilizer addition port 10, and both the fly ash inlet 9 and the stabilizer addition port 10 are threaded with sealing caps.

[0022] The fly ash inlet 9 and stabilizer addition inlet 10 on the top of the cover plate 13 can be used to add fly ash and stabilizer respectively, so as to achieve orderly addition of materials and meet the material feeding requirements of the processing process. The threaded sealing caps on both can seal the inlet and the addition inlet after adding materials, preventing the materials in the tank 1 from spilling out during the mixing process, while avoiding external dust and impurities from entering the tank 1 and affecting the effect of fly ash stabilization treatment, ensuring the cleanliness of the processing process and the purity of the material mixture.

[0023] See Figure 1-2 The bottom of the tank 1 is hemispherical and convex downwards. A cylindrical discharge pipe 12 is connected to the center of the bottom, and a control valve is installed on the discharge pipe 12.

[0024] The hemispherical structure at the bottom of the tank 1, which bulges downward, allows the processed material to naturally converge towards the discharge pipe 12 at the bottom center under the action of gravity, preventing material residue at the bottom of the tank 1. The control valve on the discharge pipe 12 can flexibly control the discharge time and amount of material, making it convenient to carry out the discharge operation according to actual needs. This ensures that the material is fully discharged and improves the convenience and controllability of the discharge.

[0025] See Figure 4 The cover plate 13 is set on the top of the tank body 1. Mounting blocks 14 are fixedly installed on both the tank body 1 and the cover plate 13. The top of the mounting blocks 14 is threaded with fixing bolts.

[0026] The cover plate 13 is connected to the tank body 1 by the mounting block 14 and fixing bolts, which makes it easy to remove or install the cover plate 13 from the tank body 1, facilitates the inspection, maintenance or replacement of the stirring components inside the tank body 1, and also ensures the stability of the connection between the cover plate 13 and the tank body 1, so that it will not loosen when stirring and processing materials, and ensures the stability of the device operation.

[0027] See Figure 1-2 The cover plate 13 has a rubber layer integrally formed at the position where it abuts against the tank body 1.

[0028] The rubber layer at the contact point between the cover plate 13 and the tank body 1 can enhance the sealing between the two, prevent the material in the tank body 1 from leaking out from the gaps during the mixing process, and at the same time reduce the entry of outside air or impurities into the tank body 1, ensuring a clean environment for fly ash stabilization treatment and improving the treatment effect.

[0029] See Figure 2 A protective cover 11 is installed on the top of the cover plate 13, and the protective cover 11 is fitted over the outside of the servo motor 2.

[0030] The protective cover 11 is installed on the outside of the servo motor 2, which can block external dust, debris or water droplets from contacting the servo motor 2, preventing these substances from affecting the normal operation of the motor. At the same time, it can prevent personnel from accidentally touching the working servo motor 2 and causing safety hazards, providing protection for the servo motor 2 while ensuring the safety of the operating environment.

[0031] See Figure 3 The cross-section of the U-shaped stirring rod 8 is set to be circular.

[0032] The U-shaped stirring rod 8 has a circular cross-section, which reduces the frictional resistance between the stirring rod and the material, making the stirring process smoother. At the same time, the circular surface is less likely to adhere to fly ash and stabilizers, making subsequent cleaning easier. It also reduces the wear of the U-shaped stirring rod 8 by the material, extending its service life.

[0033] See Figure 2The stirring components 4, the first stirring blade 5, the second stirring blade 6, the spiral stirring blade 7, and the U-shaped stirring rod 8 are all made of stainless steel.

[0034] The mixing components 4, 5, 6, 7, and 8 are made of stainless steel, which can resist corrosion from fly ash and stabilizers, preventing parts from rusting and being damaged. At the same time, stainless steel has high strength, can withstand the impact of materials during the mixing process, is not easily deformed, and is easy to clean, thus extending the service life of these mixing components and ensuring the long-term stable operation of the device.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for stabilizing fly ash from municipal solid waste incineration, comprising a tank (1) and a cover plate (13), characterized in that: A servo motor (2) is provided on the top of the cover plate (13). The drive end of the servo motor (2) is connected to a connecting rod (3). A stirring component (4) is installed on the outer wall of the connecting rod (3). The stirring component (4) is arranged in a cross pattern of multiple cylindrical rods, which are evenly distributed radially with the central axis connecting rod (3) as the intersection point. The outer wall of the connecting rod (3) is sequentially equipped with a first stirring blade (5), a second stirring blade (6), a spiral stirring blade (7), and a U-shaped stirring rod (8). The first stirring blade (5) extends parabolically toward the inner wall of the tank (1). The second stirring blade (6) is wavy. The other end of the second stirring blade (6) is fixedly connected to the bottom of the first stirring blade (5). The spiral stirring blade (7) is a spiral shape that is narrow at the top and wide at the bottom. The U-shaped stirring rod (8) is a U-shaped shape with the opening facing upward.

2. The municipal solid waste incineration fly ash stabilization treatment device as described in claim 1, characterized in that: The top of the cover plate (13) is fixedly installed with a fly ash inlet (9) and a stabilizer addition port (10), and both the fly ash inlet (9) and the stabilizer addition port (10) are threaded with sealing caps.

3. The municipal solid waste incineration fly ash stabilization treatment device as described in claim 2, characterized in that: The bottom of the tank (1) is hemispherical and protrudes downwards. A cylindrical discharge pipe (12) is connected to the center of the bottom. A control valve is installed on the discharge pipe (12).

4. The municipal solid waste incineration fly ash stabilization treatment device as described in claim 3, characterized in that: The cover plate (13) is set on the top of the tank body (1), and mounting blocks (14) are fixedly installed on both the tank body (1) and the cover plate (13). The top of the mounting block (14) is threaded with a fixing bolt.

5. The municipal solid waste incineration fly ash stabilization treatment device as described in claim 4, characterized in that: The cover plate (13) is integrally formed with a rubber layer at the position where it abuts against the tank body (1).

6. The municipal solid waste incineration fly ash stabilization treatment device as described in claim 5, characterized in that: A protective cover (11) is installed on the top of the cover plate (13), and the protective cover (11) is fitted over the outside of the servo motor (2).

7. The municipal solid waste incineration fly ash stabilization treatment device as described in claim 6, characterized in that: The cross-section of the U-shaped stirring rod (8) is set to be circular.

8. The municipal solid waste incineration fly ash stabilization treatment device as described in claim 7, characterized in that: The stirring components (4), the first stirring blade (5), the second stirring blade (6), the spiral stirring blade (7), and the U-shaped stirring rod (8) are all made of stainless steel.

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