Fly ash pulping equipment

Abstract

The utility model provides fly ash slurrying equipment, which belongs to the technical field of fly ash treatment and comprises a slurrying cylinder and a wall scraping component, a stirring component is arranged in the middle of the slurrying cylinder, the wall scraping component comprises a rotating ring arranged at the bottom of the stirring component, scrapers are arranged on two sides of the rotating ring, scrapers are arranged at one ends of the scrapers, and the scrapers are connected with the stirring component. The scrapers are attached to the inner wall of the pulping cylinder; according to the fly ash pulping device, the phenomena of bottom fly ash slurry deposition and caking in the fly ash pulping process can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of fly ash treatment technology, specifically to a fly ash pulping device. Background Technology

[0002] Fly ash slurry preparation technology is an environmentally friendly treatment process for industrial combustion residues (such as fly ash from waste incineration and coal-fired power plants). Its core involves mixing fly ash with a solidifying agent (such as cement or chelating agents) and water in a specific ratio to form a stable slurry, which is then solidified or landfilled. This technology aims to stabilize heavy metals and seal hazardous substances in fly ash, reducing environmental risks while minimizing the volume of solid waste. Due to its simple process and controllable cost, fly ash slurry preparation is widely used in waste incineration plants, coal-fired power plants, and other similar applications.

[0003] The "fly ash-cement-water" mixture is used for slurry preparation. After solidification, it can be directly used as roadbed material or safely landfilled, improving the resource utilization rate. Fly ash slurry preparation has significant advantages in waste stabilization and reduction. However, due to the small particle size and high density of fly ash particles, sedimentation is likely to occur during the slurry preparation and mixing process, resulting in the formation of a dense slab layer at the bottom of the reaction tank.

[0004] The hardened material requires manual cleaning or high-pressure water jet removal, leading to reduced processing efficiency and increased equipment maintenance costs. This deficiency has become a key bottleneck restricting the large-scale promotion of fly ash pulping technology. Utility Model Content

[0005] In view of this, the present invention provides a fly ash pulping device, which can reduce the deposition of fly ash slurry at the bottom and the phenomenon of caking into lumps during the fly ash pulping process.

[0006] To solve the above-mentioned technical problems, this utility model provides a fly ash pulping device, including a pulping cylinder and a wall scraping assembly. A stirring assembly is provided in the middle of the pulping cylinder. The wall scraping assembly includes a rotating ring fixedly connected to the bottom of the stirring assembly. Scrapers are fixedly connected to both sides of the rotating ring. The bottom of the scrapers is in contact with the bottom inner wall of the pulping cylinder. A scraper plate is fixedly connected to one end of each scraper plate. The scrapers are all arc-shaped, and the outer arc surface of the scrapers is in contact with the inner wall of the pulping cylinder. This can effectively reduce the deposition of viscous fly ash slurry at the bottom and the phenomenon of caking into lumps during the fly ash pulping process.

[0007] The scraper assembly includes a material removal plate fixedly connected to both sides of the scraper and the scraper blade. The thickness of the material removal plate on the side away from the scraper and the scraper blade is smaller than the thickness on the other side; that is, it can better adapt to the environment inside the pulping cylinder and improve the material removal efficiency.

[0008] Multiple arrayed slots are provided in the middle of the material removal plates on both sides of the scraper; this reduces the weight of the material removal plates and improves the material removal efficiency.

[0009] A connecting plate is fixedly connected between the scraper and the rotating ring, and multiple arrayed support rods are specified to connect the connecting plate and the scraper; that is, to improve the structural stability between the scraper and the rotating ring.

[0010] The mixing assembly includes a rotating column rotatably connected to the middle of the mixing cylinder. The bottom of the rotating column is fixedly connected to the middle of the rotating ring. The rotating column is hollow, which makes the rotating column lighter, thereby reducing energy consumption and improving rotation efficiency.

[0011] The top of the rotating column is higher than the top of the pulping cylinder. The top opening of the rotating column is connected to an external air source, and multiple aeration ports are opened in the middle of the rotating column; so that the gas is distributed inside the pulping cylinder.

[0012] Multiple arrayed mixing columns are fixedly connected to the middle of the rotating column; that is, to mix fly ash slurry and improve the mixing effect.

[0013] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0014] 1. The combined use of scraper blades and scraper plates can effectively reduce the deposition of viscous fly ash slurry at the bottom and the phenomenon of caking into lumps during the fly ash slurry preparation process.

[0015] 2. The design of the connecting plate and support rod can effectively distribute these forces and torques, ensuring that the scraper blade will not deform or be damaged due to uneven force during long-term operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a fly ash pulping device according to the present invention;

[0017] Figure 2 This is an enlarged structural schematic diagram of point A of this utility model;

[0018] Figure 3 This is a schematic diagram of the wall scraping assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the main structure of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100. Pulping cylinder;

[0022] 200. Scraper assembly; 201. Rotating ring; 202. Scraper blade; 203. Scraper plate; 204. Material removal plate; 205. Groove; 206. Connecting plate; 207. Support rod;

[0023] 300. Mixing assembly; 301. Rotating column; 302. Aeration port; 303. Mixing column; Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0025] like Figure 1-4 As shown: This embodiment provides a fly ash pulping device, including a pulping cylinder 100 and a wall scraping assembly 200. A stirring assembly 300 is provided in the middle of the pulping cylinder 100. The wall scraping assembly 200 includes a rotating ring 201 fixedly connected to the bottom of the stirring assembly 300. Scrapers 202 are fixedly connected to both sides of the rotating ring 201. The bottom of the scrapers 202 is in contact with the bottom inner wall of the pulping cylinder 100. A scraper 203 is fixedly connected to one end of each scraper 202. The scrapers 203 are all arc-shaped. The outer arc surface of the scrapers 203 is in contact with the inner wall of the pulping cylinder 100. The diameter of the outer arc surface of the scrapers 203 is the same as the diameter of the inner wall of the pulping cylinder 100.

[0026] During pulping, while the fly ash slurry is stirred and mixed by the stirring component 300, the rotating ring 201 at the bottom drives the scraper 202 to rotate on the inner wall of the bottom of the pulping cylinder 100. At the same time, the scraper 202 scrapes up the thicker fly ash slurry deposited on the inner wall of the bottom of the pulping cylinder 100. As stirring proceeds, the scraper 202 rotates continuously to avoid the deposition of fly ash slurry at the bottom, which would lead to uneven mixing and clumping. Meanwhile, the scraper 203 rotates synchronously to remove slurry from the bottom of the inner wall of the pulping cylinder 100. The cooperation between the scraper 202 and the scraper 203 can effectively reduce the deposition of thick fly ash slurry at the bottom and the clumping during the fly ash pulping process.

[0027] 204 Stainless Steel Removal Plate Figure 1 , 2 As shown in Figure 3,

[0028] The wall scraping assembly 200 includes a material removal plate 204 fixedly connected to both sides of the scraper 203 and both sides of the scraper blade 202. The thickness of the side of the material removal plate 204 away from the scraper 203 and the scraper blade 202 is less than the thickness of the other side.

[0029] During the rotation of scraper 202 and scraper 203, the scraper plate 204 is rotated synchronously. The scraper plate 204 has a different thickness. The thinner side of the scraper plate 204 can be inserted more effectively into the gap between the bottom deposited fly ash slurry and the pulping cylinder 100. As the scraper plate 204 rotates, its thicker side can be inserted smoothly into the gap between the fly ash slurry and the pulping cylinder 100, gradually raising the fly ash slurry and making it easier to remove.

[0030] 205 slot Figure 1 , 2 As shown in Figure 3,

[0031] Multiple arrayed slots 205 are provided in the middle of the material removal plates 204 on both sides of the scraper 202;

[0032] Because the scraper blade 202 at the bottom bears greater pressure and weight, multiple arrayed slots 205 are opened in the middle of the material removal plates 204 on both sides of the scraper blade 202. This effectively reduces the weight of the material removal plates 204 and lowers the load on the scraper blade 202 during rotation. At the same time, the slots 205 enable the material removal plates 204 to better break up the fly ash caked at the bottom of the pulping cylinder 100 during rotation, thereby improving material removal efficiency.

[0033] Connector plate 206 Figure 1 , 2 As shown in Figure 3,

[0034] A connecting plate 206 is fixedly connected between the scraper 203 and the rotating ring 201. Multiple arrayed support rods 207 are fixedly connected between the connecting plate 206 and the scraper 203. All support rods 207 are vertically arranged.

[0035] The top of the scraper 203 and the rotating ring 201 can be connected by the connecting plate 206, which improves the structural stability between the scraper 203 and the rotating ring 201. The design of the connecting plate 206 makes the scraper 203 rotate more smoothly, reducing failures caused by vibration or misalignment. During the pulping process, due to the viscosity and fluidity of the fly ash slurry, the scraper 203 needs to withstand significant forces and torques. The connection plate 206 and the support rod 207 effectively distribute these forces and torques, ensuring that the scraper 203 will not deform or be damaged due to uneven stress during long-term operation.

[0036] Rotating column 301 Figure 1 As shown,

[0037] The mixing assembly 300 includes a rotating column 301 rotatably connected to the middle of the pulping cylinder 100. The bottom of the rotating column 301 is fixedly connected to the middle of the rotating ring 201. The inner diameter of the rotating ring 201 is equal to the diameter of the rotating column 301. The rotating column 301 is hollow.

[0038] The rotation of the rotating column 301 can drive the rotating ring 201 to rotate synchronously. The hollow design of the rotating column 301 helps to reduce its weight, thereby reducing energy consumption and improving rotation efficiency.

[0039] Rotating column 301 Figure 1 As shown,

[0040] The top of the rotating column 301 is higher than the top of the pulping cylinder 100. The top opening of the rotating column 301 is connected to an external air source. Multiple aeration ports 302 arranged in an upper and lower array are opened in the middle of the rotating column 301.

[0041] Gas can be injected into the pulping cylinder 100 through an external air source. The aeration port 302 ensures that the gas is evenly distributed within the pulping cylinder 100, avoiding excessive concentration or insufficient gas in certain areas. The release of gas into the fly ash slurry can break up the flocculated structure of the slurry, reduce its viscosity, and make mixing easier and more efficient.

[0042] 303 stirring column Figure 1 As shown,

[0043] Multiple arrayed stirring columns 303 are fixedly connected to the middle of the rotating column 301, and the stirring columns 303 and aeration ports 302 are staggered vertically.

[0044] When the rotating column 301 rotates, the stirring column 303 rotates accordingly to stir and mix the fly ash slurry, promoting the flow of the fly ash slurry and preventing the slurry from settling at the bottom and side walls of the slurry preparation cylinder 100.

[0045] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A fly ash slurrying apparatus, characterized by: The application relates to a pulp making cylinder (100) and a wall scraping assembly (200), the middle part of the pulp making cylinder (100) is provided with a stirring assembly (300), the wall scraping assembly (200) comprises a rotating ring (201) arranged at the bottom of the stirring assembly (300), scraping blades (202) are arranged on the two sides of the rotating ring (201), scraping plates (203) are arranged at the ends of the scraping blades (202), and the scraping plates (203) are in close contact with the inner wall of the pulp making cylinder (100).

2. A fly ash slurrying apparatus as claimed in claim 1, wherein: The wall scraping assembly (200) comprises material removing plates (204) arranged on the two sides of the scraping plates (203) and the two sides of the scraping blades (202), and the thickness of one side of the material removing plates (204) is smaller than that of the other side.

3. A fly ash slurrying apparatus as claimed in claim 2, wherein: Multiple slots (205) are arranged in the middle part of the material removing plates (204) on the two sides of the scraping blades (202).

4. A fly ash slurrying apparatus as claimed in claim 1 wherein: Multiple connecting plates (206) are arranged between the scraping plates (203) and the rotating ring (201), and multiple supporting rods (207) are arranged between the connecting plates (206) and the scraping plates (203).

5. A fly ash slurrying apparatus as claimed in claim 1 wherein: The stirring assembly (300) comprises a rotating column (301) arranged in the middle part of the pulp making cylinder (100), and the rotating column (301) is hollow.

6. A fly ash slurrying apparatus as claimed in claim 5 wherein: The top part of the rotating column (301) is higher than the top part of the pulp making cylinder (100), and multiple arrayed aeration openings (302) are arranged in the middle part of the rotating column (301).

7. A fly ash slurrying apparatus as claimed in claim 5 wherein: Multiple stirring columns (303) are arranged in the middle part of the rotating column (301).

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