Fly ash recycling stirring pulping device

Abstract

The utility model discloses a fly ash recycling stirring slurrying device which comprises a tank body, a sealing cover is fixed at the top of the tank body through bolts, a fly ash storage barrel is arranged at the top of the sealing cover, a plurality of material guide pipes are fixed and communicated with the bottom of the fly ash storage barrel, the material guide pipes penetrate through the sealing cover and are fixed with the sealing cover, and the material guide pipes are communicated with the tank body. When fly ash is screened on the bucket-shaped sieve, small-particle fly ash is filtered by the bucket-shaped sieve and then thrown into water in the tank body, the fly ash falls into the water in the form of dispersed powder or fine powder flow, and the powder does not act collectively any more, but takes a single particle or a very tiny particle cluster as a unit. When the fly ash is mixed with water, the fly ash almost falls off or is scattered into the water, so that the production of false aggregates is avoided, the fly ash can be more fully mixed with the water, and the stirring time is shortened and the pulping efficiency is improved due to the fact that no false aggregates exist.

Description

Technical Field

[0001] This utility model relates to the technical field of fly ash resource utilization equipment, and in particular to a fly ash resource utilization stirring and pulping device. Background Technology

[0002] In the field of hazardous waste resource utilization, especially in the safe disposal and resource utilization of municipal solid waste incineration fly ash (hereinafter referred to as "fly ash"), processes such as "water washing + stabilization / solidification" or "slurry preparation as building material raw material" are often adopted. The core pre-process of these processes requires that the powdered fly ash be fully and evenly mixed with a certain proportion of water or other liquid agents in a mixing device to form a homogeneous slurry.

[0003] Currently, the conventional operating procedure for fly ash slurry mixing equipment is as follows: first, metered water is injected into the tank, and then, while the mixing system is running, fly ash powder is continuously or in batches poured into the tank. However, in actual production, it has been found that due to the extremely fine size, low density, high surface energy, and certain hydrophobicity of fly ash particles, when directly poured, the fly ash is thrown onto the water surface as a relatively dense "powder agglomerate" or "powder flow." This agglomerate is like a "stone," and upon entering the water, its exterior is encased and sealed by the water, preventing the internal air and dry powder from escaping. This causes the fly ash powder to not immediately be wetted and dispersed by the water, but rather to quickly trap some air at the water surface, forming a unique "pseudo-agglomerate." This "pseudo-agglomerate" appears externally... Surrounded by water, the fly ash remains dry powder inside, easily forming many small, stubborn structures of "liquid enveloping gas, gas enveloping powder." Due to the presence of these "pseudo-agglomerates," the mixing time required to achieve uniform slurry is prolonged, significantly reducing production efficiency. Furthermore, the presence of incompletely wetted dry powder cores in the mixed slurry leads to poor slurry uniformity and stability. Additionally, some fly ash may clump when stored or generated over a long period. If poured directly onto the liquid surface, subsequent stirring with the mixing paddle alone is insufficient to fully mix it with the liquid. Utility Model Content

[0004] In order to overcome the problem that existing fly ash falling into water will cause "pseudo-agglomerates", which not only prolongs the mixing time required to achieve uniform slurry and reduces production efficiency, but also results in the presence of dry powder cores that are not fully wetted in the mixed slurry for a long time, leading to poor slurry uniformity and instability, this utility model proposes a fly ash resource-based stirring and slurry making device that can effectively avoid the formation of "pseudo-agglomerates".

[0005] To achieve the above objectives, this utility model provides a fly ash resource utilization mixing and pulping device:

[0006] It includes a tank body, the top of which is fixed with a sealing cap by bolts. A fly ash collection cylinder is provided on the top of the sealing cap. Multiple guide pipes are fixed and connected to the bottom of the fly ash collection cylinder, and the guide pipes pass through the sealing cap and are fixed to the sealing cap, and are connected to the tank body. A dual-shaft motor is installed on the sealing cap. A first rotating rod and a second rotating rod are respectively fixed to the two output ends of the dual-shaft motor. The second rotating rod passes through the sealing cap and is rotatably connected to the sealing cap. Multiple stirring paddles are fixed to the outside of the second rotating rod extending into the tank body. Multiple L-shaped rods are fixed to one end of the first rotating rod extending into the fly ash collection cylinder. A baffle is fixed to the end of the L-shaped rod away from the first rotating rod. The baffle can block the guide pipes. An annular screen is fixed to the top of the second rotating rod. A bucket-shaped screen is fixed to the outside of the annular screen.

[0007] Preferably, the plurality of the guide tubes are arranged in a ring array, the spacing between two adjacent guide tubes is twice the length of the baffle, and the width of the baffle is greater than the diameter of the guide tube.

[0008] Preferably, the hopper-shaped screen is located below the sealing cover, and the vertical cross-sectional diameter of the hopper-shaped screen gradually decreases from top to bottom.

[0009] Preferably, the bottom of the sealing cover is fixed with multiple connecting plates, the bottom of the connecting plates is fixed with a U-shaped plate, and a rolling roller is rotatably connected inside the U-shaped plate.

[0010] Preferably, a conical disc is fixed to the inner wall of the bottom of the fly ash collection cylinder, and the first rotating rod passes through the fly ash collection cylinder and the conical disc and rotates within the fly ash collection cylinder and the conical disc. The vertical cross-sectional diameter of the conical disc gradually increases from top to bottom.

[0011] Preferably, the top of the tank is fixed and connected to a water inlet pipe, the bottom of the tank is fixed and connected to a slurry discharge pipe, and the top of the fly ash collection cylinder is fixed and connected to a feed pipe.

[0012] Preferably, a limiting sleeve is provided at the bottom of the tank, the second rotating rod passes through the limiting sleeve and rotates inside the limiting sleeve, and multiple brackets are fixed on the outside of the limiting sleeve, with the end of the bracket away from the limiting sleeve fixed to the tank.

[0013] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0014] 1) After fly ash is sieved on a bucket screen, smaller fly ash particles are filtered through the bucket screen and then sprinkled into the water in the tank. This method causes the fly ash to fall into the water as dispersed powder or fine powder. These powders no longer move collectively, but rather as individual particles or very small particle clusters, almost "falling" or "sprinkling" into the water, thus avoiding the production of "pseudo-agglomerates". This allows the fly ash to mix more thoroughly with the water. Since there are no "pseudo-agglomerates", the stirring time is also reduced, improving the efficiency of pulping.

[0015] 2) Some agglomerated and clump-like fly ash will roll from the bucket screen to the annular screen. When the second rotating rod rotates, it drives the bucket screen and the annular screen to rotate. At this time, the crushing roller will crush the agglomerated and clump-like fly ash on the annular screen, so that the agglomerated and clump-like fly ash is broken into small particles of fly ash. Then, the small particles of fly ash will fall from the annular screen into the water in the tank. This process can further process the agglomerated and clump-like fly ash and prevent the agglomerated and clump-like fly ash from falling directly into the water. After the agglomerated and clump-like fly ash is crushed, the fly ash is more easily dissolved in the water. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a fly ash resource utilization mixing and pulping device provided by this utility model;

[0017] Figure 2 A cross-sectional structural diagram of a fly ash resource utilization mixing and pulping device provided by this utility model;

[0018] Figure 3 Provided by this utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0019] Attached diagram descriptions: 1. Tank body; 2. Sealing cover; 3. Fly ash collection cylinder; 4. Feed guide pipe; 5. Dual-shaft motor; 6. First rotating rod; 7. Second rotating rod; 8. Agitator; 9. L-shaped rod; 10. Baffle; 11. Bucket screen; 12. Ring screen; 13. Connecting plate; 14. U-shaped plate; 15. Compactor roller; 16. Water inlet pipe; 17. Slurry discharge pipe; 18. Limiting sleeve; 19. Support; 20. Conical disc; 21. Feed pipe. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] Reference Figure 1-3 :

[0022] In one embodiment of this utility model, a fly ash resource utilization mixing and slurry preparation device is provided, including a tank body 1. A sealing cover 2 is bolted to the top of the tank body 1. A fly ash collection cylinder 3 is provided on the top of the sealing cover 2. A water inlet pipe 16 is fixed and connected to the top of the tank body 1. A slurry discharge pipe 17 is fixed and connected to the bottom of the tank body 1. A feed pipe 21 is fixed and connected to the top of the fly ash collection cylinder 3. Multiple guide pipes 4 are fixed and connected to the bottom of the fly ash collection cylinder 3. The guide pipes 4 pass through the sealing cover 2 and are fixed to the sealing cover 2. The guide pipes 4 are connected to the tank body 1. A dual-shaft motor 5 is installed on the sealing cover 2. A first rotating rod 6 and a second rotating rod 7 are fixed to the two output ends of the dual-shaft motor 5, respectively. The second rotating rod 7 passes through the sealing cover 2. The second rotating rod 7 extends to the outside of the tank body 1 and is fixed with multiple stirring paddles 8. The first rotating rod 6 extends to the fly ash collection cylinder 3 and is fixed with multiple L-shaped rods 9. The end of the L-shaped rod 9 away from the first rotating rod 6 is fixed with a baffle 10. The baffle 10 can block the guide pipe 4. The multiple guide pipes 4 are arranged in a ring array. The distance between two adjacent guide pipes 4 is twice the length of the baffle 10. The width of the baffle 10 is greater than the diameter of the guide pipe 4. A limiting sleeve 18 is provided at the bottom of the tank body 1. The second rotating rod 7 passes through the limiting sleeve 18 and rotates inside the limiting sleeve 18. Multiple brackets 19 are fixed to the outside of the limiting sleeve 18. The end of the bracket 19 away from the limiting sleeve 18 is fixed to the tank body 1.

[0023] Specifically, a ring screen 12 is fixed to the top of the second rotating rod 7, and a bucket-shaped screen 11 is fixed to the outside of the ring screen 12. The bucket-shaped screen 11 is located below the sealing cover 2. The vertical cross-sectional diameter of the bucket-shaped screen 11 gradually decreases from top to bottom. Multiple connecting plates 13 are fixed to the bottom of the sealing cover 2. A U-shaped plate 14 is fixed to the bottom of the connecting plate 13. A rolling roller 15 is rotatably connected inside the U-shaped plate 14. A conical disc 20 is fixed to the inner wall of the bottom of the fly ash collection cylinder 3. The first rotating rod 6 passes through the fly ash collection cylinder 3 and the conical disc 20 and rotates inside the fly ash collection cylinder 3 and the conical disc 20. The vertical cross-sectional diameter of the conical disc 20 gradually increases from top to bottom.

[0024] In use, the feed pipe 21 is connected to the external fly ash conveying pipe, allowing the fly ash to be conveyed into the fly ash collection cylinder 3. The water inlet pipe 16 is connected to the external water pipe, allowing water to be conveyed into the tank 1. Then, the dual-shaft motor 5 is started to drive the first rotating rod 6 and the second rotating rod 7 to rotate. When the first rotating rod 6 rotates, it drives the L-shaped rod 9 and the baffle 10 to rotate. When the baffle 10 rotates to the point where it no longer seals the feed pipe 4, the fly ash will fall from the feed pipe 4 into the bucket screen 11. Meanwhile, when the second rotating rod 7 rotates, it drives the bucket screen 11 to rotate, meaning the fly ash will be screened on the bucket screen 11, and smaller particles will be separated. After being filtered through the bucket screen 11, the fly ash is sprinkled into the water in the tank 1. When the second rotating rod 7 rotates, it drives the stirring paddle 8 to rotate, thereby promoting the mixing of fly ash and water for pulping. This method allows the fly ash to fall into the water as dispersed powder or fine powder. These powders no longer move collectively, but rather as individual particles or very small particle clusters, almost "falling" or "sprinkling" into the water, thus avoiding the production of "pseudo-agglomerates". This allows the fly ash to mix more thoroughly with the water. Since there are no "pseudo-agglomerates", the stirring time is also reduced, improving the efficiency of pulping.

[0025] Furthermore, when the baffle 10 rotates above the guide pipe 4, it seals the guide pipe 4, preventing fly ash from falling onto the hopper screen 11. The fly ash falls intermittently and systematically into the hopper screen 11, avoiding a single accumulation. After screening on the hopper screen 11, some agglomerated or clump-like fly ash will roll onto the annular screen 12, while the second... When the rotating rod 7 rotates, it drives the bucket screen 11 and the annular screen 12 to rotate. At this time, the crushing roller 15 crushes the clumps and lumps of fly ash on the annular screen 12, breaking the clumps and lumps of fly ash into small particles of fly ash. Then, the small particles of fly ash fall from the annular screen 12 into the water in the tank 1. This process can further process the clumps and lumps of fly ash, preventing the clumps and lumps of fly ash from falling directly into the water. After the clumps and lumps of fly ash are crushed, the fly ash is more easily dissolved in the water.

Claims

1. A fly ash resourceful stirring slurry preparation device comprising a tank body (1), characterized in that, The top of the tank (1) is fixed with a sealing cover (2) by bolts. A fly ash collection cylinder (3) is provided on the top of the sealing cover (2). The bottom of the fly ash collection cylinder (3) is fixed and connected to multiple guide pipes (4). The guide pipes (4) pass through the sealing cover (2) and are fixed to the sealing cover (2). The guide pipes (4) are connected to the tank (1). A dual-axis motor (5) is installed on the sealing cover (2). The two output ends of the dual-axis motor (5) are respectively fixed with a first rotating rod (6) and a second rotating rod (7). The second rotating rod (7) passes through the sealing cover (2). The second rotating rod (7) extends into the outer side of the tank (1) and is fixed with multiple stirring paddles (8). The first rotating rod (6) extends into the fly ash collection cylinder (3) and is fixed with multiple L-shaped rods (9). The L-shaped rod (9) is fixed with a baffle (10) at the end away from the first rotating rod (6). The baffle (10) can block the guide pipe (4). The top of the second rotating rod (7) is fixed with an annular screen (12). The outer side of the annular screen (12) is fixed with a bucket-shaped screen (11).

2. The fly ash resourceful stirring pulping device according to claim 1, characterized in that, The multiple guide tubes (4) are arranged in a ring array, and the distance between two adjacent guide tubes (4) is twice the length of the baffle (10). The width of the baffle (10) is greater than the diameter of the guide tube (4).

3. The fly ash resourceful agitated slurry preparation device according to claim 1, characterized in that, The bucket-shaped screen (11) is located below the sealing cover (2), and the vertical cross-sectional diameter of the bucket-shaped screen (11) gradually decreases from top to bottom.

4. The fly ash resourceful agitated slurry preparation device according to claim 1, characterized in that, The sealing cover (2) has multiple connecting plates (13) fixed at the bottom, and a U-shaped plate (14) is fixed at the bottom of the connecting plate (13). A rolling roller (15) is rotatably connected inside the U-shaped plate (14).

5. The fly ash resourceful agitated slurry preparation device according to claim 1, characterized in that, The fly ash collection cylinder (3) has a conical disk (20) fixed on its bottom inner wall. The first rotating rod (6) passes through the fly ash collection cylinder (3) and the conical disk (20) and rotates inside the fly ash collection cylinder (3) and the conical disk (20). The vertical cross-sectional diameter of the conical disk (20) gradually increases from top to bottom.

6. The fly ash resourceful agitated pulping apparatus of claim 1, wherein, The tank (1) is fixed to the top and connected to a water inlet pipe (16), the tank (1) is fixed to the bottom and connected to a slurry discharge pipe (17), and the fly ash collection cylinder (3) is fixed to the top and connected to a feed pipe (21).

7. The fly ash resourceful agitated slurry preparation device according to claim 1, characterized in that, The bottom of the tank (1) is provided with a limiting sleeve (18), the second rotating rod (7) passes through the limiting sleeve (18) and rotates inside the limiting sleeve (18), and multiple brackets (19) are fixed on the outside of the limiting sleeve (18). The end of the bracket (19) away from the limiting sleeve (18) is fixed to the tank (1).

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