A fly ash slurry preparation system

Abstract

This utility model provides a fly ash pulping system, including a pulp inlet, a vibrating screen, a vibrator, a fine crusher, a transmission module, and a mixing module. The fly ash pulping system provided by this utility model uses a vibrating screen to screen out large and small particles, and crushes the large particles before mixing them with the small particles. This ensures material recycling while guaranteeing thorough mixing and improving pulping efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gangue / fly ash / tailings backfilling technology, especially in the application of slurry backfilling process, specifically a fly ash slurry preparation system. Background Technology

[0002] With the continuous mining of coal, the demand for gangue backfilling in my country is increasing year by year. Currently, gangue treatment faces problems such as large land occupation for infrastructure, poor equipment stability, slurry segregation, pipe blockage, dust pollution, and high operating costs. With the increase in social electricity consumption and the rise in thermal power generation, fly ash production continues to increase, but consumption capacity is limited, and a large amount of fly ash is currently disposed of through landfill and stockpiling. Currently, fly ash slurry preparation systems have a relatively simple structure and poor slurry preparation effect. Utility Model Content

[0003] This utility model provides a fly ash pulping system, which aims to solve the problem of poor pulping effect in existing fly ash pulping systems.

[0004] This utility model provides a fly ash slurry preparation system, including: a slurry inlet, a vibrating screen, a vibrator, a fine crusher, a transmission module, and a mixing module. The slurry inlet is connected to the inlet of the vibrating screen to input fly ash into the vibrating screen. The vibrating screen includes a vibrating screen support, which is disposed inside the vibrating screen. Both ends of the vibrating screen support are respectively connected to the top and bottom of the vibrating screen. The vibrator is disposed on the top side of the vibrating screen away from the bottom of the vibrating screen, and the vibrator is electrically connected to the vibrating screen support. The vibrating screen is used to screen large and small particles in the fly ash. The transmission module is used to transport the small particles to the mixing module. The transmission module is used to transport the large particles to the fine crusher. The fine crusher is used to crush the large particles and transport the crushed powder to the mixing module. The mixing module is used to mix the crushed large particles and the small particles.

[0005] In some possible embodiments, the vibrating screen support includes an upper vibrating screen support and a lower vibrating screen support. Both the upper and lower vibrating screen supports are disposed inside the vibrating screen. The upper vibrating screen support is fixed to the top of the vibrating screen, and the lower vibrating screen support is fixed to the bottom of the vibrating screen. The upper and lower vibrating screen supports are arranged opposite to each other. The fly ash slurry preparation system also includes a vibration transmitter, and the upper support and the lower support of the vibrating screen are connected through the vibration transmitter.

[0006] In some possible embodiments, the mixing module includes an intelligent mixing tank, which includes a mixing tank body, a mixing tank motor, a triangular mixing shaft, and a discharge blade scraper. The mixing tank motor is disposed on the upper surface of the mixing tank body, and the triangular mixing shaft is disposed inside the mixing tank body and electrically connected to the mixing tank motor. The triangular mixing shaft includes a first mixing shaft arranged parallel to the horizontal plane. The discharge blade scraper is disposed on the side of the first mixing shaft away from the mixing tank motor and connected to the first mixing shaft. The discharge blade scraper is inclined relative to the first mixing shaft.

[0007] In some possible embodiments, the intelligent mixing tank further includes mixing and stirring blades, and the triangular stirring shaft further includes a second stirring shaft and a third stirring shaft that are inclined to the horizontal plane. The mixing and stirring blades are connected to the second stirring shaft and / or the third stirring shaft and are arranged parallel to the horizontal plane.

[0008] In some possible embodiments, the intelligent mixing tank further includes an inclined vibrating plate, which is inclinedly disposed at the bottom of the intelligent mixing tank, with the inclined surface of the inclined vibrating plate facing the slurry discharge port.

[0009] In some possible embodiments, the intelligent mixing tank further includes a feeder positioned above the inclined vibrating plate.

[0010] In some possible embodiments, the fly ash slurry preparation system further includes a discharge chamber, a discharge pump, a discharge pump motor, a high-pressure impact module, and a cyclone separator. The discharge chamber is connected to the main body of the mixing tank to discharge the fly ash slurry in the intelligent mixing tank to the discharge chamber. The discharge pump is located at the position where the discharge chamber is connected to the main body of the mixing tank. The discharge pump motor is located on the upper surface of the discharge chamber and is electrically connected to the discharge pump. The discharge pump can discharge the fly ash slurry in the discharge chamber under the drive of the discharge pump motor. The high-pressure impact module is located below the discharge pump. The high-pressure impact module can impact the residual slurry in the discharge chamber and the intelligent mixing tank. The cyclone blade machine is located inside the discharge chamber and fixed on the bottom of the discharge chamber. The slurry outlet is connected to the discharge pump to discharge the slurry from the discharge chamber.

[0011] In some possible embodiments, the transmission module includes a slurry inlet, a slag discharge belt, a slurry chute, and a conveyor belt. The slurry inlet is connected to the vibrating screen, and the slag discharge belt is located below the slurry inlet and connected to the fine crusher. The slurry inlet is used to discharge large particles onto the slag discharge belt, which is used to transport the large particles to the fine crusher. The slurry chute is connected to the mixing module and the vibrating screen, and is used to transport small particles into the intelligent mixing tank. The conveyor belt is connected to the fine crusher and the intelligent mixing tank. The conveyor belt is used to transport the powder obtained by crushing large particles to the intelligent mixing tank.

[0012] In some possible embodiments, the fly ash slurry preparation system further includes an auxiliary slurry inlet pipeline connected to the intelligent mixing tank, the auxiliary slurry inlet pipeline being used to deliver water to the intelligent mixing tank; The fly ash slurry preparation system also includes an acoustic liquid level detector, which can detect the liquid level in the intelligent mixing tank.

[0013] In some possible embodiments, the fine crusher is a double-toothed roller fine crusher or a smooth roller fine crusher.

[0014] This utility model provides a fly ash slurry preparation system, including a slurry inlet, a vibrating screen, a vibrator, a fine crusher, a transmission module, and a mixing module. The slurry inlet is connected to the inlet of the vibrating screen to input fly ash into the vibrating screen. The vibrating screen includes a vibrating screen support, which is installed inside the vibrating screen, and its two ends are respectively connected to the top and bottom of the vibrating screen. The vibrator is installed on the top side of the vibrating screen away from the bottom, and is electrically connected to the vibrating screen support. The vibrating screen is used to screen large and small particles in fly ash. The transmission module is used to transport small particles to the mixing module. The transmission module is used to transport large particles to the fine crusher. The fine crusher is used to crush the large particles and transport the crushed powder to the mixing module. The mixing module is used to mix the crushed large and small particles. The fly ash pulping system provided by this utility model uses a vibrating screen to screen out large and small particles, and then crushes the large particles before mixing them with the small particles. This ensures the recycling of materials while ensuring thorough mixing and improving the pulping effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an embodiment of the fly ash pulping system provided by this utility model; Figure 2 This is a top view of an embodiment of the fly ash pulping system provided by this utility model.

[0017] 1. Front-end feeding device; 2. Slurry inlet; 3. Vibrating screen; 4. Vibrator; 5. Vibration transducer; 6. Slurry inlet; 7. Slag discharge belt; 8. Fine crusher; 9. Auxiliary slurry inlet pipeline; 10. Slurry chute; 11. Intelligent mixing tank; 12. Sprayer; 13. Inclined vibrating plate; 14. Acoustic level detector; 15. Discharge blade scraper; 16. Mixing tank motor; 17. Triangular mixing shaft; 18. Mixing blades; 19. Discharge pump motor; 20. Swirl blade machine; 21. High-pressure impact module; 22. Discharge pump; 23. Slurry discharge outlet; 24. Feeding belt. Detailed Implementation

[0018] 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. 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 scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should be noted that, 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0023] Figure 1 This is a schematic diagram of an embodiment of the fly ash pulping system provided by this utility model. Figure 2 This is a top view of an embodiment of the fly ash pulping system provided by this utility model; the fly ash pulping system provided by this utility model will be described in detail below with reference to the accompanying drawings: The fly ash slurry system provided by this utility model mainly includes two parts: screening and mixing. Specifically, it includes a front-end feeding device 1, which is a fly ash inlet device that transports fly ash into the fly ash slurry system. It also includes a slurry inlet 2, which is connected to the front-end feeding device 1 and is used to transport the fly ash from the front-end feeding device to the fly ash slurry system via the inlet. After the fly ash enters the slurry system, it first needs to be screened to remove larger particles; therefore, the fly ash slurry system also includes a vibrating screen 3, whose outlet is connected to the inlet of the vibrating screen 3 to transport the fly ash to the vibrating screen 3 for screening.

[0024] Please refer to Figure 1 The vibrating screen 3 of this utility model also includes a vibrating screen support, which is installed inside the vibrating screen and its two ends are connected to the top and bottom of the vibrating screen, respectively. The vibrator 4 is installed on the top side of the vibrating screen 3, away from the bottom; that is, the vibrator is installed outside the vibrating screen 3 and on its upper surface. The vibrator 4 can generate vibration to drive the vibrating screen to vibrate, thereby screening the fly ash inside the vibrating screen to separate large and small particles in the fly ash. Figure 1In the illustrated embodiment, the vibrating screen support may further include an upper support and a lower support, both of which are located inside the vibrating screen 3. The upper support is fixed to the top of the vibrating screen, and the lower support is fixed to the bottom, with the upper and lower supports positioned opposite each other. The fly ash slurry preparation system also includes a vibration transducer 5, connecting the upper and lower supports. The vibration transducer transmits the vibration frequency generated by the vibrator 4 to the screen surface of the vibrating screen 3, achieving high-speed and stable transmission. High-frequency vibration is used for screening, improving screening efficiency and results.

[0025] In this invention, the fly ash slurry preparation system also includes a slurry inlet 6, a slag discharge belt 7, a fine crusher 8, and a slurry chute 10. These functional modules constitute the transmission module of this invention. The transmission module is mainly used to transport the screened and crushed fly ash particles. The fly ash slurry preparation system also includes a stirring module, which is mainly used to stir the crushed large and small particles to prepare fly ash slurry, thus realizing the slurry preparation process. The fly ash is screened by the vibrating screen 3 to obtain large particles and small particles. The slurry inlet 6 is connected to the vibrating screen 3. The large particles are discharged from the vibrating screen 3 through the slurry inlet 6 and conveyed to the slag discharge belt 7, which is connected to the slurry inlet 6. Because the particles transported on the slag discharge belt 7 are large, they need to be further crushed to reduce their size, allowing the material to be recycled and reducing waste generation. Therefore, the slag discharge belt 7 is connected to the fine crusher 8. The slag discharge belt 7 transports large particles to the fine crusher 8 for crushing, and the resulting small particle powder is then transported to the mixing module via the feeding belt 24. The feeding belt 24 is connected to both the fine crusher 8 and the mixing module, and is mainly used to transport the powder crushed by the fine crusher 8 to the mixing module. In this invention, the large particles screened out are crushed and then added to the mixing module for mixing, which can improve the utilization rate of materials and avoid material waste. In some embodiments, any fine crusher that can crush materials to a certain particle size can be selected. Specifically, the fine crusher 8 can be a double-toothed roller fine crusher or a smooth roller fine crusher. For smaller particles, secondary crushing is not required, so the small particles can be transported to the mixing module through the slurry chute 10. The screened small particles and the powder obtained by the fine crusher 8 are mixed in the mixing module, and after thorough mixing, they are discharged through the slurry discharge outlet 23 on the intelligent mixing tank.

[0026] The mixing module provided by this utility model mainly includes an intelligent mixing tank 11, which in turn includes a mixing tank body, a mixing tank motor 16, a triangular mixing shaft 17, and a discharge blade scraper 15. The mixing tank body provides a mixing space for crushed materials and small particles; that is, both crushed materials and small particles are transported to the mixing tank body for mixing. The mixing tank motor 16 is located on the upper surface of the mixing tank body, and the triangular mixing shaft 17 is located inside the mixing tank body and electrically connected to the mixing tank motor 16. When the mixing tank motor 16 operates, it drives the triangular mixing shaft 17 to rotate, thereby mixing the materials in the mixing tank. Because the triangular structure is relatively stable and has strong resistance to deformation, the material in the mixing tank is not easily twisted or deformed even when subjected to significant resistance during the preparation of the slurry. Figure 1 In the illustrated embodiment, the triangular stirring shaft 17 includes a first stirring shaft parallel to the horizontal plane. A discharge blade scraper 15 is disposed on the side of the first stirring shaft away from the stirring tank motor 16 and connected to the first stirring shaft. The discharge blade scraper 15 is inclined relative to the first stirring shaft. By additionally providing the discharge blade scraper 15 and tilting it, the stirring effect can be improved together with the triangular stirring shaft 17, ensuring thorough mixing of the materials. Please continue to refer to... Figure 1 The triangular stirring shaft 17 also includes a second stirring shaft and a third stirring shaft inclined to the horizontal plane, forming a stable triangular structure. The intelligent stirring tank 11 also includes mixing and stirring blades 18, which are connected to the second and / or third stirring shafts and are parallel to the horizontal plane. In this invention, the mixing and stirring blades 18 can be in one or more sets. When there is one set of mixing and stirring blades 18, they can be connected to either the second or third stirring shaft; when there are multiple sets, they can be connected to the second and third stirring shafts respectively.

[0027] The intelligent mixing tank provided by this utility model also includes a sprayer 12 and an inclined vibrating material plate 13. The sprayer 12 is positioned above the inclined vibrating material plate 13, and can lift the material accumulated at the bottom of the intelligent mixing tank 11, facilitating mixing. The inclined vibrating material plate 13 is also positioned at the bottom of the intelligent mixing tank 11, with its inclined surface facing the slurry discharge outlet 23. The inclined vibrating material plate 13 helps push the mixed slurry to the slurry discharge outlet 23. After the material is lifted by the sprayer 12, the inclined surface of the inclined vibrating material plate can push the lifted material to the slurry discharge outlet 23.

[0028] The fly ash slurry preparation system provided by this utility model also includes a discharge chamber, a discharge pump 22, a discharge pump motor 19, a high-pressure impact module 21, and a cyclone separator 20. The bottom of the discharge chamber is connected to the bottom of the mixing tank body to discharge the fly ash slurry mixed in the intelligent mixing tank 11 into the discharge chamber, and the discharge pump 22 is located at the position where the discharge chamber is connected to the mixing tank body. The inclined vibrating plate 13 pushes the mixed slurry to the slurry discharge outlet 23, which actually pushes the mixed slurry from the bottom of the mixing tank body to the area where the discharge pump 22 is located. The discharge pump motor 19 is located on the upper surface of the discharge chamber and is electrically connected to the discharge pump 22. Driven by the discharge pump motor 19, the discharge pump can discharge the fly ash slurry in the discharge chamber from the slurry discharge outlet.

[0029] A high-pressure impact module 21 is located below the discharge pump 22. This module impacts residual slurry in the discharge chamber and intelligent mixing tank 11, ensuring all slurry is discharged and reducing residue in these areas. A vortex vane motor 20 is located inside the discharge chamber and fixed to its bottom. Similar to a sprayer, the vortex vane motor 20 lifts the slurry for discharge by the discharge pump. The slurry discharge outlet 23 is connected to the discharge pump 22 to discharge the slurry through the outlet.

[0030] It should be noted that the fly ash slurry preparation system provided by this utility model also includes an auxiliary slurry inlet pipe 9, which is connected to the intelligent mixing tank 11 to deliver water to the intelligent mixing tank 11. Water is then mixed with the material in the mixing tank to prepare fly ash slurry. The fly ash slurry preparation system also includes an acoustic level detector 14, which can monitor the liquid level in the intelligent mixing tank 11 in real time. The liquid level can be controlled in real time using a programmable logic controller (PLC), such as adjusting the conveyor belt speed of the powder or the water flow rate in the auxiliary slurry inlet pipe 9.

[0031] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0032] The above provides a detailed description of a fly ash slurry preparation system provided by the embodiments of this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this utility model. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fly ash slurry preparation system, characterized in that, include: The system includes a slurry inlet, a vibrating screen, a vibrator, a fine crusher, a transmission module, and a mixing module. The slurry inlet is connected to the inlet of the vibrating screen to input fly ash into the vibrating screen. The vibrating screen includes a vibrating screen support, which is located inside the vibrating screen. Both ends of the vibrating screen support are connected to the top and bottom of the vibrating screen, respectively. The vibrator is located on the top side of the vibrating screen away from the bottom of the vibrating screen and is electrically connected to the vibrating screen support. The vibrating screen is used to screen large and small particles in the fly ash. The transmission module is used to transport the small particles to the mixing module. The transmission module is used to transport the large particles to the fine crusher. The fine crusher is used to crush the large particles and transport the crushed powder to the mixing module. The mixing module is used to mix the crushed large particles and the small particles.

2. The fly ash slurry preparation system according to claim 1, characterized in that, The vibrating screen support includes an upper support and a lower support. Both the upper and lower supports are located inside the vibrating screen. The upper support is fixed to the top of the vibrating screen, and the lower support is fixed to the bottom of the vibrating screen. The upper and lower supports are arranged opposite to each other. The fly ash slurry preparation system also includes a vibration transmitter, and the upper support and the lower support of the vibrating screen are connected through the vibration transmitter.

3. The fly ash slurry preparation system according to claim 1, characterized in that, The mixing module includes an intelligent mixing tank, which comprises a mixing tank body, a mixing tank motor, a triangular mixing shaft, and a discharge blade scraper. The mixing tank motor is disposed on the upper surface of the mixing tank body, and the triangular mixing shaft is disposed inside the mixing tank body and electrically connected to the mixing tank motor. The triangular mixing shaft includes a first mixing shaft arranged parallel to the horizontal plane. The discharge blade scraper is disposed on the side of the first mixing shaft away from the mixing tank motor and connected to the first mixing shaft. The discharge blade scraper is inclined relative to the first mixing shaft.

4. The fly ash slurry preparation system according to claim 3, characterized in that, The intelligent mixing tank also includes mixing and stirring blades, and the triangular stirring shaft also includes a second stirring shaft and a third stirring shaft that are inclined to the horizontal plane. The mixing and stirring blades are connected to the second stirring shaft and / or the third stirring shaft and are arranged parallel to the horizontal plane.

5. The fly ash slurry preparation system according to claim 3, characterized in that, The intelligent mixing tank also includes an inclined vibrating plate. A slurry discharge port is provided above the intelligent mixing tank. The inclined vibrating plate is inclinedly arranged at the bottom of the intelligent mixing tank, and the inclined surface of the inclined vibrating plate faces the slurry discharge port.

6. The fly ash slurry preparation system according to claim 5, characterized in that, The intelligent mixing tank also includes a sprayer, which is positioned above the inclined vibrating material plate.

7. The fly ash slurry preparation system according to claim 5, characterized in that, The fly ash slurry preparation system also includes a discharge chamber, a discharge pump, a discharge pump motor, a high-pressure impact module, and a cyclone blade machine. The discharge chamber is connected to the main body of the mixing tank to discharge the fly ash slurry in the intelligent mixing tank to the discharge chamber. The discharge pump is located at the position where the discharge chamber is connected to the main body of the mixing tank. The discharge pump motor is located on the upper surface of the discharge chamber and is electrically connected to the discharge pump. The discharge pump motor is used to drive the discharge pump to discharge the fly ash slurry in the discharge chamber. The high-pressure impact module is located below the discharge pump. The high-pressure impact module can impact the residual slurry in the discharge chamber and the intelligent mixing tank. The cyclone vane is located inside the discharge chamber and fixed to the bottom of the discharge chamber. The slurry outlet is connected to the discharge pump to discharge the slurry from the discharge chamber.

8. The fly ash slurry preparation system according to claim 3, characterized in that, The transmission module includes a slurry inlet, a slag discharge belt, a slurry chute, and a conveyor belt. The slurry inlet is connected to the vibrating screen, and the slag discharge belt is located below the slurry inlet and connected to the fine crusher. The slurry inlet is used to discharge large particles onto the slag discharge belt, which is used to transport the large particles to the fine crusher. The slurry chute is connected to the mixing module and the vibrating screen, and is used to transport small particles into the intelligent mixing tank. The conveyor belt is connected to the fine crusher and the intelligent mixing tank. The conveyor belt is used to transport the powder obtained by crushing large particles to the intelligent mixing tank.

9. The fly ash slurry preparation system according to claim 3, characterized in that, The fly ash slurry preparation system also includes an auxiliary slurry inlet pipeline, which is connected to the intelligent mixing tank and is used to deliver water to the intelligent mixing tank. The fly ash slurry preparation system also includes an acoustic liquid level detector, which can detect the liquid level in the intelligent mixing tank.

10. The fly ash slurry preparation system according to claim 1, characterized in that, The fine crusher is a double-toothed roller fine crusher or a smooth roller fine crusher.

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