Premixing muck pulping equipment

Abstract

The invention discloses premixed muck slurrying equipment, and belongs to the technical field of engineering slurrying, and the premixed muck slurrying equipment comprises a feeding structure, the feeding structure comprises a conveying belt for obliquely conveying materials upwards, and further comprises a muck discharging structure and an ingredient discharging structure which are located at the front section of the conveying belt; a material inlet of the material crushing structure is located below the rear end of the conveying belt; discharging and adding of the ingredients are conducted on the conveying belt, premixing of the muck and the ingredients can be achieved, bentonite can be puffed in advance, the materials are premixed and subjected to a preliminary reaction when entering the stirrer, the stirring structure is used for stirring the materials, the stirring structure is used for stirring the materials, the stirring structure is used for stirring the materials, and the stirring structure is used for stirring the materials. Therefore, the stirring time in the material stirring structure is shortened, the overall pulping efficiency is improved, and the problems of large occupied area and low stirring efficiency of muck pulping equipment in the muck regeneration treatment process with the aim of environmental protection in the prior art are solved.

Description

Technical Field

[0001] This invention relates to the field of engineering pulping technology, and in particular to a premixed slag pulping equipment. Background Technology

[0002] In tunnel boring machine (TBM) construction, backfilling is required using grout. Currently, to achieve environmental protection, waste disposal, and solid waste recycling, grout is typically made from waste soil. This not only saves on waste soil disposal costs but also reduces the cost of raw materials and transportation for the grout, and is more environmentally friendly. However, traditional waste soil grouting equipment requires a large area, has low mixing efficiency, and requires a long mixing time.

[0003] For example, the "Construction Equipment for Forming Liquid Solidified Soil from Waste Slurry and Slag" disclosed in Chinese patent literature, with publication number CN115897547A, includes a vibrating screen, a mixer, and a feeder. The vibrating screen is placed in a separation chamber, and a bottom chamber is formed between the bottom of the separation chamber and the vibrating screen. The vibrating screen vibrates and separates the waste slurry and slag into large and small particles. The small particles mix with water in the bottom chamber to form slurry and slag. The slurry and slag in the bottom chamber are discharged into a slurry tank. The slurry and slag in the slurry tank are discharged into the mixer through a slurry pipe. The feeder adds a solidifying agent to the mixer, and the mixer mixes the slurry and slag with the solidifying agent to form liquid solidified soil. The drawback of this patent is that its equipment occupies a large area, and the mixing efficiency is low because multiple materials are mixed and stirred simultaneously in one mixer. Summary of the Invention

[0004] In order to overcome the problems of large footprint and low mixing efficiency of existing slag pulping equipment in the process of slag recycling for environmental protection purposes, a premixed slag pulping equipment is provided, which can reduce its footprint and improve mixing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This invention discloses a premixed slag slurry preparation device, comprising: a feeding structure, the feeding structure including a conveyor belt for conveying materials at an upward inclination, and a slag discharge structure and a batching discharge structure located at the front end of the conveyor belt; a crushing structure, the inlet of the crushing structure being located below the rear end of the conveyor belt; and a mixing structure, the inlet of the mixing structure being connected to the outlet of the crushing structure.

[0006] In existing technologies, curing agents, bentonite, and other ingredients are typically added to the agitator during the mixing process. Therefore, the agitator must not only ensure uniform mixing but also effectively blend the materials. Furthermore, the time required for the curing agent and the slag to fully react and for the bentonite to become wet and expanded results in a lengthy mixing process and low efficiency. This application addresses this by adding the ingredients at the discharge point on a conveyor belt. This allows for pre-mixing of the slag and other ingredients and pre-expansion of the bentonite, ensuring that the materials are pre-mixed and undergo preliminary reaction before entering the agitator. This reduces the mixing time within the material mixing structure and improves the overall pulping efficiency.

[0007] Preferably, the crushing structure includes a crushing bin, which includes a shearing crushing zone and a homogenizing crushing zone. The material enters the mixing structure after passing through the shearing crushing zone and the homogenizing crushing zone sequentially from the feeding structure.

[0008] Preferably, the shearing and shredding zone includes a stator and a rotor, with a shearing cavity formed in the gap between the stator and the rotor. The stator includes several toothed members fixed to the inner wall of the shredding bin, and the rotor includes a vertically arranged first shaft with several hooks on it. The ends of the hooks are provided with curved hook teeth.

[0009] Preferably, the upper end of the rotor is provided with a tapered material distribution surface.

[0010] Preferably, the homogenization crushing zone is provided with a second vertical shaft, and the second vertical shaft is provided with a plurality of turbine-type blades.

[0011] Preferably, a material feeding structure is provided between the rear end of the conveyor belt and the feed inlet of the crushing bin.

[0012] Preferably, the mixing structure includes a first mixing zone and a second mixing zone, and the material is discharged after passing through the first mixing zone and the second mixing zone sequentially from the crushing structure.

[0013] Preferably, the first stirring zone includes a first stirring blade, and the angle between the first stirring blade and the radial direction of the stirring shaft is 30°-50°.

[0014] Preferably, the second stirring zone includes a second stirring blade, the second stirring blade having an inclination angle of 15°-25° with respect to the radial direction of the stirring shaft, and the outer end of the second stirring blade having a scraping section.

[0015] Preferably, the material discharging structure includes a bentonite discharging structure and a curing agent discharging structure, and also includes a humidifying nozzle located behind the bentonite discharging structure.

[0016] Therefore, the present invention has the following beneficial effects: (1) premixing the slag and ingredients on the conveyor belt reduces the mixing time in the mixing structure and improves the overall efficiency; (2) since premixing is carried out on the conveyor belt, the mixing structure in this application can be smaller while having the same mixing effect, thereby saving space; (3) by improving the crushing bin, it can crush the wet and agglomerated premix. Attached Figure Description

[0017] Figure 1 This is a front view of the overall structure of the present invention.

[0018] Figure 2 This is a top view of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of a shearing and scraping zone according to Embodiment 1 of the present invention.

[0020] Figure 4 This is a top view schematic diagram of the rotor in the shearing and crushing zone of the present invention.

[0021] Figure 5 This is a top view schematic diagram of a turbine-type blade in the homogenization crushing zone of the present invention.

[0022] Figure 6 This is a schematic diagram of one type of stirring structure of the present invention.

[0023] Figure 7 A schematic diagram of a shearing and crushing zone in Embodiment 2 of the present invention.

[0024] In the diagram: 1. Feeding structure; 2. Crushing structure; 3. Mixing structure; 4. Discharge bin; 5. Conveyor belt; 6. Slag discharge structure; 7. Batching and discharge structure; 8. Crushing bin; 9. Shearing crushing zone; 10. Homogenizing crushing zone; 11. Toothed component; 12. First vertical shaft; 13. Hook cutter; 14. Hook tooth; 15. Fixed tooth ring; 16. Sleeve; 17. Conical material distribution surface; 18. Second vertical shaft; 19. Turbine blade; 20. First mixing zone; 21. Second mixing zone; 22. Mixing shaft; 23. First mixing blade; 24. Material feeding structure; 25. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0026] Example 1, as Figure 1-6 As shown, a premixed slag slurry preparation device is used to recycle and process the slag generated during the operation of a tunnel boring machine into slurry for engineering use, including a feeding structure 1, a crushing structure 2, a mixing structure 3, and a discharge bin 4.

[0027] The feeding structure 1 includes an inclined upward conveyor belt 5 for transporting materials, and also includes a slag discharge structure 6 and a batching discharge structure 7 located at the front end of the conveyor belt 5. The feeding structure 1 is used to transport slag above the crushing structure 2 for feeding. The conveyor belt 5 is inclined upward. The slag discharge structure 6 is located at the front end of the conveyor belt 5, and the front end of the conveyor belt 5 is below the discharge port of the slag discharge structure 6. After leaving the discharge port, the slag in the slag discharge structure 6 falls directly onto the conveyor belt 5 under the action of gravity. The lower end of the discharge port of the slag discharge structure 6 is no more than 10cm away from the conveyor belt 5 to avoid the slag generating excessive gravitational potential energy and causing it to slide directly downward.

[0028] The conveyor belt 5 is mounted on an idler structure and driven by a motor at one end. The idler structure comprises several idler groups, each consisting of three idlers: a bottom idler and two side idlers located on either side of the bottom idler. The side idlers are inclined relative to the bottom idler, creating a notch in the middle of the conveyor belt 5 to prevent material from falling from either side. Falling material not only wastes raw materials but also poses a safety hazard, potentially injuring personnel below. Simultaneously, the conveyor belt 5 is equipped with several crossbars spaced apart along the conveying direction, with the crossbars extending in the width direction of the conveyor belt 5. These crossbars prevent material on the conveyor belt 5 from slipping backwards towards the slag discharge structure 6 under gravity.

[0029] The batching and discharging structure 7 includes a bentonite discharging structure and a curing agent discharging structure. In this embodiment, the main ingredients are bentonite and a curing agent. In other possible embodiments, due to different slurry formulations, the types and quantities of ingredients may also differ, requiring corresponding discharging structures of different types and quantities. The batching and discharging structure 7 also includes a water tank and a humidification nozzle located behind the bentonite discharging structure. In this embodiment, the bentonite in the batching needs to be swelled by adding water. The hoppers for different ingredients in the batching and discharging structure 7 are all located on both sides of the conveyor belt 5 and are arranged as closely as possible to the slag discharge structure 6, thereby allowing sufficient pre-mixing and pre-reaction time for the ingredients and slag.

[0030] The crushing structure 2 includes a crushing bin 8, with its inlet located at the upper end and below the rear end of the conveyor belt 5. The crushing bin 8 comprises two sub-bins: a shearing crushing zone 9 and a homogenizing crushing zone 10. Material enters the mixing structure 3 after passing through the shearing crushing zone 9 and the homogenizing crushing zone 10 sequentially from the feeding structure 1. The shearing crushing zone 9 primarily performs low-speed shearing and crushing of larger pieces in the mixture of slag and ingredients. The homogenizing crushing zone 10 primarily performs high-speed shearing and crushing of smaller pieces that have undergone preliminary shearing, thereby improving uniformity.

[0031] The shearing and shredding zone 9 is equipped with a stator and a rotor, and a shearing cavity is formed in the gap between the stator and the rotor. The stator includes several toothed components 11 fixed to the inner wall of the shredding bin 8. The rotor includes a vertically arranged first shaft 12, on which several hooks 13 are provided. The ends of the hooks 13 are provided with hook teeth 14 facing the rotor tangentially. The shearing and shredding zone 9 is generally cylindrical, and several toothed components 11 are provided on its inner wall. The toothed components 11 can be designed as comb-shaped or sieve-shaped. The toothed components 11 are made of cemented carbide. Furthermore, for cost reduction, cemented carbide can be inlaid only at the tooth tips of the toothed components 11. In the axial direction of the shearing and shredding zone 9, multiple layers of fixed toothed rings 15 are provided. The fixed toothed rings 15 are fixedly installed on the inner wall of the shredding bin 8, and the toothed components 11 are fixedly arranged on the inner side of the fixed toothed rings 15. The teeth of the toothed members 11 on the adjacent two-layer stator rings 15 are staggered to prevent large pieces of material from falling through the gaps. Only after being sheared into smaller pieces can the material fall. Furthermore, the gap between the stator and rotor gradually decreases from top to bottom, which also allows the material to be gradually sheared into smaller pieces during its fall, preventing excessive force on the upper toothed members 11 and thus preventing damage. The first vertical shaft 12 is driven to rotate by the first crushing motor. A sleeve 16 is installed on the first vertical shaft 12. The upper ends of the rotor and the sleeve 16 are provided with a conical material distribution surface 17. The sleeve 16 is used to reduce the space for crushing, allowing the mixture falling into the shearing and crushing zone 9 to approach the toothed members 11. The conical material distribution surface 17 is used to guide the material to the outside of the sleeve 16. The hook blade 13 and hook teeth 14 are used to hook the mixture falling into the shearing and crushing zone 9 and tear and shear it with the toothed members 11, thereby achieving the crushing of the mixture. The reason for choosing a shear-type crushing structure instead of a conventional hammer crushing structure is that, in this application, the slag and ingredients are pre-mixed and pre-reacted, and the mixture is prone to becoming damp and clumping. The crushing effect of using a crushing structure is not good. By using the stator and rotor structure in this application for crushing, the crushing effect is significantly improved.

[0032] The homogenizing and crushing zone 10 is equipped with a second vertical shaft 18, which has several turbine-type blades 19. The second vertical shaft 18 is driven to rotate by a second crushing motor. The material after passing through the shearing and crushing zone 9 falls into the homogenizing and crushing zone 10, where it undergoes further shearing, impact, dispersing, and mixing, which can further break the material into smaller pieces and improve its uniformity.

[0033] The stirring structure 3 includes a first stirring zone 20 and a second stirring zone 21. Material is discharged from the crushing structure 2 after passing through the first stirring zone 20 and the second stirring zone 21 sequentially. The stirring structure 3 includes two stirring shafts 22, which are arranged in parallel, and both the first stirring zone 20 and the second stirring zone 21 utilize both stirring shafts 22 simultaneously for stirring. The first stirring zone 20 and the second stirring zone 21 are distinguished by the different stirring blades on the stirring shafts 22. The first stirring zone 20 includes a first stirring blade 23, with an angle of 30°-50° between the first stirring blade 23 and the radial direction of the stirring shaft 22. The second stirring zone 21 contains a second stirring blade 24, with an angle of 15°-25° between the second stirring blade 24 and the radial direction of the stirring shaft 22. Further, in this embodiment, the angle between the first stirring blade 23 and the radial direction of the stirring shaft 22 is 40°, and the angle between the second stirring blade 24 and the radial direction of the stirring shaft 22 is 20°. The first stirring blade 23 has a larger inclination angle, which exerts a greater force on the material in the axial direction of the stirring shaft 22. It is mainly used to improve the uniformity of the mixing of the front and rear materials. The second stirring blade 24 has a smaller inclination angle, which mainly generates a tangential force on the material. It is mainly used to turn the material, so that the ingredients and slag particles can fully penetrate and react. At the same time, it avoids the introduction of too many air bubbles and ensures the consistency of the product slurry.

[0034] During the pulping process using the equipment of this application, the slag falls from the slag discharge structure 6 to the front end of the conveyor belt 5, and is then transported upwards at an incline. During the transport of the slag, it is prevented from sliding down due to gravity by the action of the crossbars. The slag passes sequentially through the bentonite discharge structure, the humidification nozzle, and the curing agent discharge structure. The bentonite and curing agent also fall onto the conveyor belt 5 to premix and pre-react with the slag. When the mixture of slag and ingredients moves upwards to the rear end of the conveyor belt 5, it falls from the rear end of the conveyor belt 5 into the crushing bin 8. The mixture first enters the shearing crushing zone 9 and falls onto the conical distribution surface 17. The mixture slides outwards from the conical distribution surface 17 and falls onto the side of the sleeve 16, that is, between the rotor and the stator. Under the action of the hook blade 13 and the hook teeth 14, the material is hooked and rotates with the first vertical shaft 12. During the rotation, the material is torn and sheared into small pieces by the toothed parts 11, and then falls into the homogenizing crushing zone 10. The material falling into the homogenization crushing zone 10 is further sheared by the turbine blades 19 and falls into the mixing structure 3.

[0035] The material falling into the mixing structure 3 first enters the first mixing zone 20. In the first mixing zone 20, the material moves rapidly axially and undergoes a certain degree of axial mixing. Then it enters the second mixing zone 21. In the second mixing zone 21, the material is continuously turned over, and the ingredients and slag particles fully penetrate and react to ensure the consistency of the product slurry. The material passing through the mixing structure 3 finally falls into the discharge bin 4 for discharge.

[0036] Example 2, as Figure 7 As shown, a premixed slag slurry preparation device is used to recycle and process the slag generated during the operation of a tunnel boring machine into slurry for engineering use, including a feeding structure 1, a crushing structure 2, a mixing structure 3, and a discharge bin 4.

[0037] The feeding structure 1 includes an inclined upward conveyor belt 5 for transporting materials, and also includes a slag discharge structure 6 and a batching discharge structure 7 located at the front end of the conveyor belt 5. The feeding structure 1 is used to transport slag above the crushing structure 2 for feeding. The conveyor belt 5 is inclined upward. The slag discharge structure 6 is located at the front end of the conveyor belt 5, and the front end of the conveyor belt 5 is below the discharge port of the slag discharge structure 6. After leaving the discharge port, the slag in the slag discharge structure 6 falls directly onto the conveyor belt 5 under the action of gravity. The lower end of the discharge port of the slag discharge structure 6 is no more than 10cm away from the conveyor belt 5 to avoid the slag generating excessive gravitational potential energy and causing it to slide directly downward.

[0038] The conveyor belt 5 is mounted on an idler structure and driven by a motor at one end. The idler structure comprises several idler groups, each consisting of three idlers: a bottom idler and two side idlers located on either side of the bottom idler. The side idlers are inclined relative to the bottom idler, creating a notch in the middle of the conveyor belt 5 to prevent material from falling from either side. Falling material not only wastes raw materials but also poses a safety hazard, potentially injuring personnel below. Simultaneously, the conveyor belt 5 is equipped with several crossbars spaced apart along the conveying direction, with the crossbars extending in the width direction of the conveyor belt 5. These crossbars prevent material on the conveyor belt 5 from slipping backwards towards the slag discharge structure 6 under gravity.

[0039] The batching and discharging structure 7 includes a bentonite discharging structure and a curing agent discharging structure. In this embodiment, the main ingredients are bentonite and a curing agent. In other possible embodiments, due to different slurry formulations, the types and quantities of ingredients may also differ, requiring corresponding discharging structures of different types and quantities. The batching and discharging structure 7 also includes a water tank and a humidification nozzle located behind the bentonite discharging structure. In this embodiment, the bentonite in the batching needs to be swelled by adding water. The hoppers for different ingredients in the batching and discharging structure 7 are all located on both sides of the conveyor belt 5 and are arranged as closely as possible to the slag discharge structure 6, thereby allowing sufficient pre-mixing and pre-reaction time for the ingredients and slag.

[0040] The crushing structure 2 includes a crushing bin 8, with its inlet located at the upper end and below the rear end of the conveyor belt 5. The crushing bin 8 comprises two sub-bins: a shearing crushing zone 9 and a homogenizing crushing zone 10. Material enters the mixing structure 3 after passing through the shearing crushing zone 9 and the homogenizing crushing zone 10 sequentially from the feeding structure 1. The shearing crushing zone 9 primarily performs low-speed shearing and crushing of larger pieces in the mixture of slag and ingredients. The homogenizing crushing zone 10 primarily performs high-speed shearing and crushing of smaller pieces that have undergone preliminary shearing, thereby improving uniformity. In this embodiment, unlike in embodiment one, a material-pushing structure 25 is provided between the rear end of the conveyor belt 5 and the feed inlet of the crushing bin 8. The material-pushing structure 25 includes a material-pushing drive motor and a material-pushing shaft. The material-pushing shaft is provided with several material-pushing rods. When the material falls to the material-pushing structure 25, it will be pushed out in different directions by the material-pushing rods, thereby improving the uniformity of material distribution at different positions in the circumferential direction in the shearing crushing zone 9.

[0041] The shearing and shredding zone 9 is equipped with a stator and a rotor, and a shearing cavity is formed in the gap between the stator and the rotor. The stator includes several toothed components 11 fixed to the inner wall of the shredding bin 8. The rotor includes a vertically arranged first shaft 12, on which several hooks 13 are provided. The ends of the hooks 13 are provided with hook teeth 14 facing the rotor tangentially. The shearing and shredding zone 9 is generally cylindrical, and several toothed components 11 are provided on its inner wall. The toothed components 11 can be designed as comb-shaped or sieve-shaped. The toothed components 11 are made of cemented carbide. Furthermore, for cost reduction, cemented carbide can be inlaid only at the tooth tips of the toothed components 11. In the axial direction of the shearing and shredding zone 9, multiple layers of fixed toothed rings 15 are provided. The fixed toothed rings 15 are fixedly installed on the inner wall of the shredding bin 8, and the toothed components 11 are fixedly arranged on the inner side of the fixed toothed rings 15. The teeth of the toothed members 11 on the adjacent two-layer stator rings 15 are staggered to prevent large pieces of material from falling through the gaps. Only after being sheared into smaller pieces can the material fall. Furthermore, the gap between the stator and rotor gradually decreases from top to bottom, which also allows the material to be gradually sheared into smaller pieces during its fall, preventing excessive force on the upper toothed members 11 and thus preventing damage. The first vertical shaft 12 is driven to rotate by the first crushing motor. A sleeve 16 is installed on the first vertical shaft 12. The upper ends of the rotor and the sleeve 16 are provided with a conical material distribution surface 17. The sleeve 16 is used to reduce the space for crushing, allowing the mixture falling into the shearing and crushing zone 9 to approach the toothed members 11. The conical material distribution surface 17 is used to guide the material to the outside of the sleeve 16. The hook blade 13 and hook teeth 14 are used to hook the mixture falling into the shearing and crushing zone 9 and tear and shear it with the toothed members 11, thereby achieving the crushing of the mixture. The reason for choosing a shear-type crushing structure instead of a conventional hammer crushing structure is that, in this application, the slag and ingredients are pre-mixed and pre-reacted, and the mixture is prone to becoming damp and clumping. The crushing effect of using a crushing structure is not good. By using the stator and rotor structure in this application for crushing, the crushing effect is significantly improved.

[0042] The homogenizing and crushing zone 10 is equipped with a second vertical shaft 18, which has several turbine-type blades 19. The second vertical shaft 18 is driven to rotate by a second crushing motor. The material after passing through the shearing and crushing zone 9 falls into the homogenizing and crushing zone 10, where it undergoes further shearing, impact, dispersing, and mixing, which can further break the material into smaller pieces and improve its uniformity.

[0043] The stirring structure 3 includes a first stirring zone 20 and a second stirring zone 21. Material is discharged from the crushing structure 2 after passing through the first stirring zone 20 and the second stirring zone 21 sequentially. The stirring structure 3 includes two stirring shafts 22, which are arranged in parallel, and both the first stirring zone 20 and the second stirring zone 21 utilize both stirring shafts 22 simultaneously for stirring. The first stirring zone 20 and the second stirring zone 21 are distinguished by the different stirring blades on the stirring shafts 22. The first stirring zone 20 includes a first stirring blade 23, with an angle of 30°-50° between the first stirring blade 23 and the radial direction of the stirring shaft 22. The second stirring zone 21 contains a second stirring blade 24, with an angle of 15°-25° between the second stirring blade 24 and the radial direction of the stirring shaft 22. Further, in this embodiment, the angle between the first stirring blade 23 and the radial direction of the stirring shaft 22 is 40°, and the angle between the second stirring blade 24 and the radial direction of the stirring shaft 22 is 20°. The first stirring blade 23 has a larger inclination angle, which exerts a greater force on the material in the axial direction of the stirring shaft 22. It is mainly used to improve the uniformity of the mixing of the front and rear materials. The second stirring blade 24 has a smaller inclination angle, which mainly generates a tangential force on the material. It is mainly used to turn the material, so that the ingredients and slag particles can fully penetrate and react. At the same time, it avoids the introduction of too many air bubbles and ensures the consistency of the product slurry.

[0044] During the pulping process using the equipment of this application, the slag falls from the slag discharge structure 6 to the front end of the conveyor belt 5, and is then transported upwards at an incline. During the transport of the slag, it is prevented from sliding down due to gravity by the crossbars. The slag sequentially passes through the bentonite discharge structure, the humidification nozzle, and the curing agent discharge structure. The bentonite and curing agent also fall onto the conveyor belt 5 to premix and pre-react with the slag. When the mixture of slag and ingredients moves upwards to the rear end of the conveyor belt 5, it falls from the rear end of the conveyor belt 5 into the crushing bin 8. Before falling into the crushing bin 8, the mixture passes through the feeding structure 25 and is ejected by the feeding structure 25 in different directions. The mixture first enters the shearing and crushing zone 9 and falls onto the conical distribution surface 17. The mixture slides outwards from the conical distribution surface 17 and lands on the side of the sleeve 16, between the rotor and stator. Under the action of the hook blades 13 and hook teeth 14, the material is hooked and rotates with the first vertical shaft 12. During rotation, the material is torn and sheared into small pieces by the toothed parts 11, and then falls into the homogenizing and crushing zone 10. The material falling into the homogenizing and crushing zone 10 is further sheared by the turbine-type blades 19 and falls into the stirring structure 3.

[0045] The material falling into the mixing structure 3 first enters the first mixing zone 20. In the first mixing zone 20, the material moves rapidly axially and undergoes a certain degree of axial mixing. Then it enters the second mixing zone 21. In the second mixing zone 21, the material is continuously turned over, and the ingredients and slag particles fully penetrate and react to ensure the consistency of the product slurry. The material passing through the mixing structure 3 finally falls into the discharge bin 4 for discharge.

Claims

1. A premixed slag pulping device, characterized in that, include: The feeding structure includes an inclined conveyor belt for transporting materials upwards, and also includes a slag discharge structure and a batching discharge structure located at the front end of the conveyor belt. The material crushing structure has its inlet located below the rear end of the conveyor belt; The stirring structure has its inlet connected to the outlet of the crushing structure.

2. The premixed slag pulping equipment according to claim 1, characterized in that, The material crushing structure includes a crushing bin, which includes a shearing crushing zone and a homogenizing crushing zone. The material enters the mixing structure after passing through the shearing crushing zone and the homogenizing crushing zone in sequence from the feeding structure.

3. The premixed slag pulping equipment according to claim 2, characterized in that, The shearing and shredding zone is provided with a stator and a rotor, and a shearing cavity is formed in the gap between the stator and the rotor. The stator includes a number of toothed parts fixed on the inner wall of the shredding bin. The rotor includes a first vertical shaft arranged vertically, and a number of hooks are provided on the first vertical shaft. The ends of the hooks are provided with curved hook teeth.

4. The premixed slag pulping equipment according to claim 3, characterized in that, The upper end of the rotor is provided with a conical material distribution surface.

5. The premixed slag pulping equipment according to claim 2, characterized in that, The homogenization crushing zone is equipped with a second vertical shaft, on which are a number of turbine-type blades.

6. The premixed slag pulping equipment according to claim 2, characterized in that, A material feeding structure is provided between the rear end of the conveyor belt and the feed inlet of the crushing bin.

7. The premixed slag pulping equipment according to claim 1, characterized in that, The mixing structure includes a first mixing zone and a second mixing zone. The material is discharged after passing through the first mixing zone and the second mixing zone sequentially from the crushing structure.

8. The premixed slag pulping equipment according to claim 7, characterized in that, The first stirring zone is provided with a first stirring blade, and the inclination angle between the first stirring blade and the radial direction of the stirring shaft is 30°-50°.

9. A premixed slag pulping device according to claim 7, characterized in that, The second stirring zone is provided with a second stirring blade, and the inclination angle between the second stirring blade and the radial direction of the stirring shaft is 15°-25°.

10. A premixed slag pulping device according to any one of claims 1-9, characterized in that, The material discharging structure includes a bentonite discharging structure and a curing agent discharging structure, and also includes a humidifying nozzle located behind the bentonite discharging structure.

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