Efficient fly ash pulping water washing device

Abstract

The utility model discloses a fly ash efficient pulping water washing device relates to fly ash processing technical field, this fly ash efficient pulping water washing device, including pulping jar, the top outer wall of pulping jar is provided with the box cover, the top outer wall fixedly connected with motor of box cover, the inner wall rotationally connected with rotating rod of box cover, the output shaft of motor is fixedly connected with the top of rotating rod, both sides outer walls of rotating rod all are fixedly connected with horizontal stirring subassembly, one side of horizontal stirring subassembly is provided with scraper no.

Description

Technical Field

[0001] This utility model relates to the field of fly ash treatment technology, and in particular to a high-efficiency fly ash pulping and washing device. Background Technology

[0002] In the process of waste incineration, fly ash, as a collector in flue gas purification systems and as bottom ash settling at the bottom of flues and chimneys, generates a significant amount. Because fly ash is rich in high concentrations of chlorides, heavy metals, and dioxins, it is explicitly classified as hazardous waste and is toxic. Direct discharge without strict treatment will pose a serious threat to the environment and human health. Therefore, implementing strict and effective treatment methods before landfilling or resource utilization of fly ash is essential. Water washing technology, as a relatively efficient method for removing large amounts of chloride ions from fly ash, plays a crucial pre-treatment role in the subsequent resource utilization process.

[0003] When using existing fly ash pulping and washing equipment, fly ash tends to clump and the particles cannot be effectively refined, resulting in uneven mixing of fly ash and liquid during subsequent pulping and washing processes. This affects the leaching efficiency of soluble substances such as chloride ions, thereby reducing the overall treatment effect. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency fly ash pulping and washing device, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency fly ash pulping and washing device, comprising a pulping tank, a lid provided on the top outer wall of the pulping tank, a motor fixedly connected to the top outer wall of the lid, a rotating rod rotatably connected to the inner wall of the lid, the output shaft of the motor fixedly connected to the top end of the rotating rod, transverse stirring components fixedly connected to both outer walls of the rotating rod, a scraper first provided on one side of the transverse stirring component, a stirring paddle fixedly connected to the outer wall of the rotating rod, a connecting rod fixedly connected to the outer wall near the bottom end of the rotating rod, a scraper second fixedly connected to one end of the connecting rod, and the outer walls of the scraper first and scraper second abutting against the inner wall of the pulping tank;

[0006] The inner wall of the box cover is provided with a feed pipe and a liquid inlet pipe. A premixing box is fixedly connected to the inner side wall of the pulping tank near the top. The outer wall of the premixing box is evenly provided with mesh holes. A scraper is fixedly connected to the outer wall of the rotating rod. The scraper is distributed in a circumferential array on the outside of the rotating rod. The bottom of the scraper abuts against the bottom of the inner wall of the premixing box.

[0007] The inner wall of the premixing box is fixedly connected to an annular pipe, and a nozzle is provided on the outer wall of the annular pipe, with the nozzle tilted downwards.

[0008] Preferably, the pulping tank includes an integrally connected cylindrical tank and a conical tank, with the cylindrical tank located at the upper part and the conical tank located at the lower part and communicating with the bottom end of the cylindrical tank; a slag discharge port is provided at the center of the bottom of the conical tank, and a liquid discharge port is provided on the side wall of the conical tank, with the liquid discharge port located above the slag discharge port; a first valve for controlling the discharge of liquid is provided at the liquid discharge port, and a second valve for controlling the discharge of slag is provided at the slag discharge port.

[0009] Preferably, the transverse stirring assembly includes a transverse rod fixed to the rotating rod, the end of the transverse rod away from the rotating rod being fixed to a scraper, and the outer wall of the transverse rod being provided with a plurality of auxiliary stirring blades at intervals.

[0010] Preferably, the scraper includes a mounting plate fixed to the rotating rod, and elastic bristles are fixed to the bottom of the mounting plate, the elastic bristles being in close contact with the bottom of the inner wall of the premixing box.

[0011] Preferably, the inner wall of the conical tank is a smooth curved surface, the shape of the second scraper is adapted to the shape of the inner wall of the conical tank, and the edge of the second scraper is in contact with the inner wall of the conical tank.

[0012] Preferably, the nozzles are evenly distributed along the circumference of the annular tube, and the tilt angle of the nozzles is 30°-60°.

[0013] Compared with related technologies, the fly ash high-efficiency pulping and washing device provided by this utility model has the following beneficial effects:

[0014] 1. This utility model provides a high-efficiency fly ash pulping and washing device. In the premixing stage, fly ash and washing liquid enter the premixing tank through the feed pipe and liquid inlet pipe. The direct rinsing of fly ash by the liquid combined with the stirring of the scraper effectively disperses the clumps and refines the particles. By enhancing the premixing effect, it lays the foundation for the efficient operation of the subsequent pulping and washing process, and significantly improves the overall processing efficiency of the device.

[0015] 2. This utility model provides a high-efficiency fly ash pulping and washing device. After entering the pulping tank, the material is stirred by the horizontal stirring component and stirring paddle under the drive of the rotating rod, so that the fly ash and liquid are fully mixed to form a slurry, which can efficiently dissolve soluble substances such as chloride ions. Scraper 1 and scraper 2 are respectively attached to the cylindrical and conical inner walls of the pulping tank and rotate to continuously scrape off the slurry adhering to the tank wall, avoid material residue, and further improve the washing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 For the present utility model Figure 2 Schematic diagram of the cross-section structure;

[0019] Figure 4 This is a schematic diagram of the internal structure of the pulping tank of this utility model;

[0020] Figure 5 This is a schematic diagram of the premixing box structure of this utility model.

[0021] In the diagram: 1. Pulping tank; 101. Cylindrical tank; 102. Conical tank; 2. Tank cover; 3. Drain outlet; 4. Slag outlet; 5. Feed pipe; 6. Rotating rod; 7. Motor; 8. Horizontal stirring assembly; 9. Scraper 1; 10. Stirring paddle; 11. Scraper 2; 12. Inlet pipe; 13. Premixing tank; 14. Scraper brush; 15. Annular pipe; 16. Nozzle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example:

[0024] Please see Figures 1-5 This utility model provides a technical solution: a high-efficiency fly ash pulping and washing device, comprising a pulping tank 1, a box cover 2 provided on the top outer wall of the pulping tank 1, a motor 7 fixedly connected to the top outer wall of the box cover 2, a rotating rod 6 rotatably connected to the inner wall of the box cover 2, the output shaft of the motor 7 fixedly connected to the top end of the rotating rod 6, transverse stirring components 8 fixedly connected to both outer walls of the rotating rod 6, a scraper 9 provided on one side of the transverse stirring component 8, a stirring paddle 10 fixedly connected to the outer wall of the rotating rod 6, a connecting rod fixedly connected to the outer wall near the bottom end of the rotating rod 6, a scraper 11 fixedly connected to one end of the connecting rod, and the outer walls of the scraper 9 and the scraper 11 abutting against the inner wall of the pulping tank 1;

[0025] The inner wall of the box cover 2 is provided with a feed pipe 5 and a liquid inlet pipe 12. The inner wall of the pulping tank 1 near the top is fixedly connected to a premixing box 13. The outer wall of the premixing box 13 is evenly provided with mesh holes. The outer wall of the rotating rod 6 is fixedly connected to a scraper 14. The scraper 14 is distributed in a circumferential array on the outside of the rotating rod 6. The bottom of the scraper 14 abuts against the bottom of the inner wall of the premixing box 13.

[0026] An annular pipe 15 is fixedly connected to the inner wall of the premixing box 13, and a nozzle 16 is provided on the outer wall of the annular pipe 15. The nozzle 16 is inclined downward.

[0027] In this embodiment, fly ash enters the premixing tank 13 through the feed pipe 5. The premixing tank 13 receives the fly ash and it falls through the mesh on the outside of the premixing tank 13. Liquid enters the premixing tank 13 through the liquid inlet pipe 12. The liquid directly acts on the fly ash and washes it downward. The slurry falls through the mesh on the premixing tank 13. The motor 7 is started, and the motor 7 drives the rotating rod 6 to rotate, which drives the circumferentially distributed scrapers 14 to rotate at the bottom of the premixing tank 13. The scrapers 14 initially mix the fly ash and washing liquid, break up the clumps of fly ash and make its particles finer. Finally, the fully moistened fly ash mixture falls into the pulping tank 1 through the bottom mesh.

[0028] The ring pipe 15 is connected to the municipal water source. The nozzles 16 on the outer wall of the ring pipe 15 are set downwards to spray water onto the bottom of the premixing tank 13. The water sprayed from the nozzles 16 simultaneously washes the mesh at the bottom of the premixing tank 13, which can effectively prevent the mesh from being blocked.

[0029] The premixed material entering the pulping tank 1 is stirred by the horizontal stirring component 8 and the stirring paddle 10 under the drive of the rotating rod 6: the horizontal stirring component 8 disperses the material in the horizontal direction, and the stirring paddle 10 enhances the longitudinal convection, so that the fly ash and liquid are fully mixed to form a slurry, thereby achieving efficient dissolution of soluble substances such as chloride ions.

[0030] The pulping tank 1 includes an integrally connected cylindrical tank 101 and a conical tank 102. The cylindrical tank 101 is located at the upper part, and the conical tank 102 is located at the lower part and is connected to the bottom end of the cylindrical tank 101. A slag discharge port 4 is provided at the center of the bottom of the conical tank 102, and a liquid discharge port 3 is provided on the side wall of the conical tank 102. The liquid discharge port 3 is located above the slag discharge port 4. A first valve for controlling the discharge of liquid is provided at the liquid discharge port 3, and a second valve for controlling the discharge of slag is provided at the slag discharge port 4.

[0031] In this embodiment, after the washing is completed, the waste liquid containing chloride ions is discharged through the drain port 3 on one side of the conical tank 102 and can be recycled after treatment; the remaining solid residue is discharged through the bottom slag discharge port 4 under the guidance of the conical tank 102, thus achieving solid-liquid separation.

[0032] The transverse stirring assembly 8 includes a transverse rod fixed to the rotating rod 6. The end of the transverse rod away from the rotating rod 6 is fixed to the scraper 9. The outer wall of the transverse rod is provided with multiple auxiliary stirring blades at intervals.

[0033] In this embodiment, the premixed material entering the pulping tank 1 is stirred by the horizontal stirring assembly 8 and the stirring paddle 10 under the drive of the rotating rod 6: the horizontal stirring assembly 8 disperses the material in the horizontal direction.

[0034] The scraper 14 includes a mounting plate fixed to the rotating rod 6. The bottom of the mounting plate is fixed with elastic bristles, which are in close contact with the bottom of the inner wall of the premixing box 13.

[0035] In this embodiment, the motor 7 drives the rotating rod 6 to rotate, which in turn drives the circumferentially distributed scraper 14 to rotate at the bottom of the premixing tank 13. The scraper 14 initially mixes the fly ash and washing liquid, breaks up the clumps of fly ash and refines its particles, and finally allows the fully moistened fly ash mixture to fall into the pulping tank 1 through the bottom mesh.

[0036] The inner wall of the conical tank 102 is a smooth curved surface, the shape of the scraper 2 11 is adapted to the shape of the inner wall of the conical tank 102, and the edge of the scraper 2 11 is in contact with the inner wall of the conical tank 102.

[0037] In this embodiment, scraper 19 rotates along with the transverse stirring assembly 8, adhering to the cylindrical inner wall of the slurry tank, and scraper 211 rotates along with the connecting rod at the bottom of the rotating rod 6, adhering to the conical inner wall, continuously scraping off the slurry adhering to the tank wall, thus avoiding material residue that could affect the washing efficiency.

[0038] The nozzles 16 are evenly distributed along the circumference of the annular tube 15, and the tilt angle of the nozzles 16 is 30°-60°.

[0039] In this embodiment, the annular pipe 15 is connected to a municipal water source, and the nozzles 16 on the outer wall of the annular pipe 15 are inclined downwards to spray water onto the bottom of the premixing tank 13. The water sprayed from the nozzles 16 simultaneously washes the mesh at the bottom of the premixing tank 13, which can effectively prevent the mesh from becoming clogged.

[0040] Working principle: Premixing stage: Fly ash enters the premixing tank 13 through the feed pipe 5. The premixing tank 13 receives the fly ash and it falls through the mesh on the outside of the premixing tank 13. Liquid enters the premixing tank 13 through the liquid inlet pipe 12. The liquid directly acts on the fly ash and washes it downward. The slurry falls through the mesh on the premixing tank 13. The motor 7 is started, and the motor 7 drives the rotating rod 6 to rotate, which drives the circumferentially distributed scrapers 14 to rotate at the bottom of the premixing tank 13. The scrapers 14 initially mix the fly ash and washing liquid, break up the clumps of fly ash and make its particles finer. Finally, the fully moistened fly ash mixture falls into the pulping tank 1 through the bottom mesh.

[0041] The ring pipe 15 is connected to the municipal water source. The nozzles 16 on the outer wall of the ring pipe 15 are set downwards to spray water onto the bottom of the premixing tank 13. The water sprayed from the nozzles 16 simultaneously washes the mesh at the bottom of the premixing tank 13, which can effectively prevent the mesh from being blocked.

[0042] The premixed material entering the pulping tank 1 is stirred by the transverse stirring assembly 8 and the stirring paddle 10 under the drive of the rotating rod 6. The transverse stirring assembly 8 disperses the material horizontally, while the stirring paddle 10 enhances longitudinal convection, ensuring that fly ash and liquid are fully mixed to form a slurry, achieving efficient dissolution of soluble substances such as chloride ions. Simultaneously, scraper 1 9 rotates along with the transverse stirring assembly 8, adhering to the cylindrical inner wall of the pulping tank, while scraper 2 11 rotates along with the connecting rod at the bottom of the rotating rod 6, adhering to the conical inner wall, continuously scraping off the slurry adhering to the tank wall to prevent material residue from affecting the washing efficiency.

[0043] After washing, the waste liquid containing chloride ions is discharged through the drain port 3 on one side of the conical tank 102 and can be recycled after treatment; the remaining solid residue is discharged through the bottom slag discharge port 4 under the guidance of the conical tank 102, thus achieving solid-liquid separation.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency fly ash pulping and washing device, comprising a pulping tank (1), characterized in that: The top outer wall of the pulping tank (1) is provided with a box cover (2), the top outer wall of the box cover (2) is fixedly connected with a motor (7), the inner wall of the box cover (2) is rotatably connected with a rotating rod (6), the output shaft of the motor (7) is fixedly connected to the top end of the rotating rod (6), the outer walls on both sides of the rotating rod (6) are fixedly connected with a transverse stirring assembly (8), a scraper (9) is provided on one side of the transverse stirring assembly (8), a stirring paddle (10) is fixedly connected to the outer wall of the rotating rod (6), a connecting rod is fixedly connected to the outer wall near the bottom of the rotating rod (6), a scraper (11) is fixedly connected to one end of the connecting rod, and the outer walls of the scraper (9) and scraper (11) abut against the inner wall of the pulping tank (1). The inner wall of the box cover (2) is provided with a feed pipe (5) and a liquid inlet pipe (12). The inner wall of the pulping tank (1) near the top is fixedly connected to a premixing box (13). The outer wall of the premixing box (13) is evenly provided with mesh holes. The outer wall of the rotating rod (6) is fixedly connected to a scraper (14). The scraper (14) is distributed in a circumferential array on the outside of the rotating rod (6). The bottom of the scraper (14) abuts against the bottom of the inner wall of the premixing box (13). The inner wall of the premixing box (13) is fixedly connected to an annular pipe (15), and the outer wall of the annular pipe (15) is provided with a nozzle (16), which is inclined downward.

2. The fly ash high-efficiency pulping and washing device according to claim 1, characterized in that: The pulping tank (1) includes an integrally connected cylindrical tank body (101) and a conical tank body (102). The cylindrical tank body (101) is located at the upper part, and the conical tank body (102) is located at the lower part and is connected to the bottom end of the cylindrical tank body (101). A slag discharge port (4) is provided at the center of the bottom of the conical tank body (102), and a liquid discharge port (3) is provided on the side wall of the conical tank body (102). The liquid discharge port (3) is located above the slag discharge port (4). A first valve for controlling the discharge of liquid is provided at the liquid discharge port (3), and a second valve for controlling the discharge of slag is provided at the slag discharge port (4).

3. The fly ash high-efficiency pulping and washing device according to claim 1, characterized in that: The transverse stirring assembly (8) includes a transverse rod fixed to the rotating rod (6), one end of the transverse rod away from the rotating rod (6) is fixed to the scraper (9), and the outer wall of the transverse rod is provided with a plurality of auxiliary stirring blades at intervals.

4. The fly ash high-efficiency pulping and washing device according to claim 1, characterized in that: The scraper (14) includes a mounting plate fixed to the rotating rod (6), and elastic bristles are fixed to the bottom of the mounting plate. The elastic bristles are in close contact with the bottom of the inner wall of the premixing box (13).

5. The fly ash high-efficiency pulping and washing device according to claim 2, characterized in that: The inner wall of the conical tank (102) is a smooth curved surface. The shape of the scraper (11) is adapted to the shape of the inner wall of the conical tank (102), and the edge of the scraper (11) is in contact with the inner wall of the conical tank (102).

6. The fly ash high-efficiency pulping and washing device according to claim 1, characterized in that: The nozzles (16) are evenly distributed around the annular tube (15), and the tilt angle of the nozzles (16) is 30°-60°.

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