Multifunctional continuous activation modification machine for high specific surface area calcium hydroxide processing

Abstract

The application discloses a multifunctional continuous activation modification machine for processing high-specific-surface-area calcium hydroxide, relates to the technical field of calcium hydroxide powder processing equipment, and comprises a raw material pretreatment unit, a multistage continuous activation modification unit and a collection and conveying unit. The raw material pretreatment unit realizes raw material depolymerization screening, temperature and humidity control and stable conveying through vibration depolymerization, screw conveying and hot air cooperation. The multistage continuous activation modification unit adopts three-stage cylinder bodies in a triangular shape. The first-stage activation cylinder strengthens the mechanical activation effect through a reverse operation structure. The second-stage modification cylinder realizes uniform dispersant coating through atomization and stirring. The third-stage sorting cylinder completes accurate grading through multi-specification screens. The collection and conveying unit realizes efficient collection of finished products without agglomeration through negative pressure, buffer and positive pressure conveying structures. The application realizes full-process continuous operation, effectively increases the specific surface area of the powder, improves the modification consistency and the finished product qualification rate, and is suitable for large-scale production of high-specific-surface-area calcium hydroxide.

Description

Technical Field

[0001] This invention relates to the technical field of calcium hydroxide powder processing equipment, specifically to a multi-functional continuous activation and modification machine for processing high specific surface area calcium hydroxide. Background Technology

[0002] Calcium hydroxide powder, as an important inorganic chemical raw material, is widely used in environmental protection, building materials, pharmaceuticals, and chemical industries. With the technological upgrading of downstream industries, the market has increasingly stringent requirements for the performance of calcium hydroxide powder, especially calcium hydroxide powder with high specific surface area and high activity, which has shown significant advantages in flue gas desulfurization, wastewater treatment, and rubber reinforcement due to its stronger adsorption and reactivity.

[0003] Currently, the activation modification of calcium hydroxide powder is mainly achieved through a combination of mechanical activation and chemical coating. This involves using mechanical force to distort the powder's crystal lattice and generate oxygen vacancies to increase the specific surface area, followed by coating with a dispersant to improve the powder's dispersibility and stability. However, existing processing equipment and processes have many shortcomings in practical applications. 1. In the raw material pretreatment stage, most equipment only has a single conveying or screening function and lacks an integrated deagglomeration, drying, and temperature control system. Large-diameter agglomerates in the raw materials cannot be effectively broken up, the free water content is too high, and the powder temperature fluctuates greatly. After entering the subsequent activation process, agglomeration is likely to occur, hindering the full interaction between mechanical force and powder particles.

[0004] 2. In the mechanical activation stage, the activation structure design of traditional equipment is unreasonable. It often adopts unidirectional stirring or low-speed impact mode, resulting in a single movement trajectory of powder particles, low frequency of collision and friction between particles, limited degree of lattice distortion, insufficient introduction of oxygen vacancies, and difficulty in significantly increasing the specific surface area of ​​powder. At the same time, the equipment lacks eddy current disturbance structure, making it difficult to completely break up soft agglomerates of powder, resulting in low activation energy transfer efficiency and affecting the effect of subsequent coating and modification.

[0005] 3. In the coating and modification process, the addition of dispersants is mostly done manually and in a rough manner, which cannot achieve precise quantitative delivery. In addition, the atomization effect of the dispersant is poor and the mixing with the powder is uneven. Powder tends to stick to the inner wall of the modification cylinder, making cleaning difficult. This not only wastes materials but also causes large differences in coating thickness between different batches of products, making it difficult to guarantee quality consistency.

[0006] 4. In the sorting process, the screening screens of existing screening equipment are mostly of fixed specifications, which cannot quickly switch the screening precision according to production needs, resulting in poor sorting flexibility. At the same time, the powder is prone to re-agglomeration due to the rise in humidity during the transfer process, resulting in low screening efficiency, serious loss of qualified powder, and low raw material utilization rate and finished product qualification rate.

[0007] 5. In terms of equipment layout, traditional multi-stage activation and modification equipment adopts a decentralized layout, with each unit such as primary activation, secondary modification, and tertiary sorting being independent and requiring long-distance conveyor belts for connection. This not only increases material transfer time and reduces process continuity but also occupies a significant amount of factory space, resulting in high infrastructure costs and making it unsuitable for the production needs of small and medium-sized enterprises.

[0008] 6. In the finished product collection and conveying stage, most equipment adopts gravity discharge method. The high-speed impact of powder on the inner wall of the collection box is prone to splashing and secondary agglomeration, which affects the quality of the finished product. Moreover, the discharge link lacks stable power drive, which is prone to material blockage, leading to production interruption and low collection efficiency.

[0009] In addition, the existing production lines operate independently, and key parameters such as temperature, humidity, and rotation speed cannot be coordinated and controlled. Frequent manual intervention and adjustments are required, resulting in long production processes, low efficiency, and difficulty in adapting to the processing needs of calcium hydroxide powders with different specifications and high specific surface areas. The low level of intelligence and automation has hindered the technological upgrading of the calcium hydroxide powder processing industry.

[0010] Therefore, developing an integrated, continuous, and intelligent activation and modification equipment for high specific surface area calcium hydroxide processing, realizing a fully integrated operation of raw material pretreatment, mechanical activation, coating modification, precise sorting, and finished product collection, and solving the problems of poor activation effect, low product consistency, large footprint, and low efficiency of existing equipment, has become an urgent need for the current development of the industry. Summary of the Invention

[0011] To address the shortcomings of existing technologies, this invention provides a multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide. This machine solves the problems of discrete processes, insufficient raw material pretreatment, poor activation and modification effect, inflexible sorting, large equipment footprint, easy agglomeration of finished products, and low intelligence in traditional calcium hydroxide activation and modification equipment, which affect production efficiency and product quality.

[0012] To achieve the above objectives, the present invention provides the following technical solution: A multi-functional continuous activation and modification machine for processing high specific surface area calcium hydroxide includes a raw material pretreatment unit, a multi-stage continuous activation and modification unit, and a collection and conveying unit.

[0013] As an optimized solution, the multi-stage continuous activation and modification unit includes a main support base. Two horizontally symmetrical first positioning plates and second positioning plates are fixed on the upper surface of the main support base. A first-stage activation cylinder, a second-stage modification cylinder, and a third-stage sorting cylinder are fixedly installed between the first positioning plate and the second positioning plate. The first-stage activation cylinder, the second-stage modification cylinder, and the third-stage sorting cylinder are all horizontally extending cylindrical cylinders and are distributed in a triangular shape.

[0014] As an optimized solution, an inclined material transfer pipe is fixed between the primary activation cylinder and the secondary modification cylinder, and a horizontal material transfer pipe is fixed between the secondary modification cylinder and the tertiary sorting cylinder.

[0015] As an optimized solution, a spiral guide plate is fixed on the inner peripheral wall of the primary activation cylinder near the first positioning plate. A main shaft is rotatably installed inside the primary activation cylinder. Several centrally symmetrical high-speed impact blades are fixed on the outer peripheral wall of the main shaft near its end. The several high-speed impact blades are located inside the spiral guide plate.

[0016] As an optimized solution, a honeycomb-shaped inner core is also fixed on the inner peripheral wall of the middle section of the primary activation cylinder.

[0017] As an optimized solution, a laterally extending dispersant feed pipe is fixed inside the secondary modification cylinder. Several atomizing nozzles are provided on the dispersant feed pipe along the circumferential and axial directions. Three centrally symmetrical stirring and turning plates are rotatably provided on the outer side of the dispersant feed pipe.

[0018] As an optimized solution, a grading drum is rotatably installed inside the three-stage sorting drum. The grading drum is located near the side of the horizontal material transfer pipe. Three centrally symmetrical sorting inlets are opened on the outer peripheral wall of the grading drum. An arc-shaped screening screen plate is fixed inside the sorting inlet. The mesh size of the three screening screen plates decreases sequentially.

[0019] As an optimized solution, the raw material pretreatment unit includes a pretreatment support frame, the lower end of which is grounded on all four sides, and the upper end of which is fixed with a pretreatment mounting plate, which is a horizontally arranged square frame plate.

[0020] As an optimized solution, a receiving hopper is fixed in the middle of the pretreatment mounting plate, and a pretreatment conveying pipe connected to the lower end of the receiving hopper is fixed thereto.

[0021] As an optimized solution, the pretreatment conveying pipe is a horizontally extending, one-end closed round pipe. A spiral conveying auger is provided inside the pretreatment conveying pipe. A conveying drive motor is fixed on the closed end face of the pretreatment conveying pipe. The end of the output shaft of the conveying drive motor passes through the side wall of the pretreatment conveying pipe and is fixedly connected to the end of the spiral conveying auger.

[0022] As an optimized solution, four centrally symmetrical spring support seats are fixed at the four corners of the upper surface of the pretreatment mounting plate. A horizontal vibration support plate is fixed at the upper end of the four spring support seats. The vibration support plate is a horizontally set square frame plate. A vibration depolymerization hopper is fixed in the middle of the vibration support plate. The lower end of the vibration depolymerization hopper extends into the receiving hopper.

[0023] As an optimized solution, two miniature vibrating motors are fixed at both ends of the lower part of the vibrating depolymerization hopper, and a horizontal vibrating screen is fixed on the circumferential inner wall of the vibrating depolymerization hopper near the lower end.

[0024] As an optimized solution, a primary hot air conveying fan is fixed at the upper end of the pretreatment conveying pipe near the opening, and the primary hot air conveying fan is positioned directly opposite the spiral conveying auger.

[0025] As an optimized solution, the main support base is a horizontally arranged square base, and a central base plate is provided below the main support base. The central base plate is a horizontally grounded square plate, and four T-shaped support bases are fixed on the upper surface of the central base plate in pairs. The upper ends of the four T-shaped support bases are fixed to the lower surface of the main support base.

[0026] As an optimized solution, both the first positioning plate and the second positioning plate are triangular plates.

[0027] As an optimized solution, the secondary modification cylinder and the tertiary sorting cylinder are arranged longitudinally symmetrically and close to the upper surface of the main support, and the primary activation cylinder is located above the middle of the secondary modification cylinder and the tertiary sorting cylinder.

[0028] As an optimized solution, the open end of the pretreatment conveying pipe is fixed on the transverse outer wall of the first positioning plate and is positioned directly opposite the primary activation cylinder. The first positioning plate has a feed inlet that connects the pretreatment conveying pipe and the primary activation cylinder.

[0029] As an optimized solution, the inclined material transfer pipe is located near the second positioning plate, and a secondary hot air conveying fan is fixed on the inclined material transfer pipe. The horizontal material transfer pipe is located near the first positioning plate, and a tertiary hot air conveying fan is fixed on the horizontal material transfer pipe.

[0030] As an optimized solution, a horizontal motor support plate is fixed on the second positioning plate, and a first rotating motor is fixed on the motor support plate. The end of the output shaft of the first rotating motor passes through the second positioning plate and is fixed to the end of the main rotating shaft.

[0031] As an optimized solution, a second rotating motor is fixed to one side of the upper surface of the main support base. The output shaft of the second rotating motor passes through the side wall of the first positioning plate, extends into the secondary modification cylinder, and is fixedly connected to a side turntable. The ends of the three stirring and turning plates are fixed to the side end face of the side turntable, and the back of the stirring and turning plates is set close to the inner peripheral wall of the secondary modification cylinder.

[0032] As an optimized solution, the grading drum is a cylindrical tube with a single-sided opening and a laterally extending shape. A third rotating motor is also fixed on one side of the upper surface of the main support base. The third rotating motor is arranged longitudinally symmetrically with the second rotating motor. The end of the output shaft of the third rotating motor passes through the first positioning plate and is fixed to the closed end face of the grading drum.

[0033] As an optimized solution, an integrated box is fixed to the other side of the upper surface of the main support base. The integrated box is located on the opposite side of the second rotating motor. A compressed air pump is fixed to the upper surface of the integrated box. An air storage tank connected to the compressed air pump is fixed to the outer wall of the integrated box. A three-way feeding pipe connected to the air storage tank is fixed inside the integrated box. The end of the dispersant feed pipe is fixed to the second positioning plate and connected to the three-way feeding pipe.

[0034] As an optimized solution, the longitudinal portion of the three-way feeding pipe passes through the integrated box and extends to its outer side, and the three-way feeding pipe is equipped with a feeding valve.

[0035] As an optimized solution, the collection and conveying unit includes a conveying and discharging pipe, one end of which is fixed to the transverse outer wall of the second positioning plate. The conveying and discharging pipe is positioned directly opposite the three-stage sorting cylinder. The second positioning plate has a discharge port that connects the conveying and discharging pipe and the three-stage sorting cylinder.

[0036] As an optimized solution, a negative pressure air collection pump is provided in the middle section of the conveying and discharging pipe.

[0037] As an optimized solution, the collection and conveying unit further includes a collection box, which is a square box with an open bottom and a tapering shape, and the end of the conveying outlet pipe is fixedly connected to the collection box.

[0038] As an optimized solution, a stepper motor is fixed on the transverse outer wall of the collection box, and the end of the output shaft of the stepper motor passes through the side wall of the collection box and is fixed with a buffer diverting wheel, which is positioned directly opposite the conveying discharge pipe.

[0039] As an optimized solution, a longitudinal conveying square tube is fixed to the lower end of the collection box, and a finished product conveying air pump is fixed to the closed end face of the longitudinal conveying square tube.

[0040] Compared with the prior art, the beneficial effects of the present invention are: 1. Raw material pretreatment achieves synergistic effects of homogenization, temperature and humidity control, and stable transportation. The vibrating deagglomeration hopper, equipped with a micro-vibrating motor and a vibrating screen, can perform high-frequency vibrating screening of calcium hydroxide powder raw materials, efficiently intercepting large-diameter agglomerates and achieving preliminary deagglomeration and homogenization of the raw materials. The spiral conveyor auger in the pretreatment conveying pipe, combined with a primary hot air conveying fan, stably pushes the powder while ensuring full contact between the hot air and the powder. This not only quickly removes free water from the raw materials and reduces the moisture content to avoid agglomeration during subsequent activation and modification, but also precisely controls the powder temperature, providing suitable initial temperature conditions for subsequent multi-stage activation and modification. At the same time, the wind field formed by the hot air can assist in powder conveying, improving the stability and continuity of material flow.

[0041] 2. Primary mechanical activation significantly increases the specific surface area of ​​the powder and breaks down soft agglomerates. The primary activation cylinder employs a design where a spiral guide plate and a high-speed impact impeller rotate in opposite directions. This allows the powder to form a spiral trajectory under the guidance of the spiral guide plate, while simultaneously being subjected to strong impact and shearing action from the high-speed impact impeller. This causes the powder particle lattice to distort, introducing a large number of oxygen vacancies and significantly increasing the specific surface area of ​​the particles. The vortex disturbance field constructed by the honeycomb inner core can change the trajectory of the powder particles, causing high-frequency collisions and friction between particles. This further breaks down soft agglomerates of the powder, enhances the transfer efficiency of mechanical activation energy, and improves the degree of powder activation, laying a good foundation for subsequent modification treatment.

[0042] 3. Secondary coating modification achieves uniform coating of dispersant and improves modification consistency. The secondary hot air conveyor blower introduces hot air into the inclined material transfer pipe, which can maintain the temperature stability of the powder during the transfer process, avoid temperature fluctuations affecting the modification effect, and at the same time assist the material to enter the secondary modification cylinder smoothly. The coordinated operation of the compressed air pump, air tank and three-way feeding pipe can realize the quantitative delivery of the modified dispersant. After the dispersant is atomized by the atomizing nozzle, it is evenly sprayed into the secondary modification cylinder in the form of tiny droplets. The side turntable drives the stirring and turning plate to rotate closely against the cylinder wall, which can not only fully stir the powder, so that the powder and atomized dispersant are evenly mixed and collided, but also scrape the powder adhering to the cylinder wall to avoid material residue, and ensure that the dispersant forms a uniform and dense coating layer on the surface of the powder particles, thereby improving the modification quality and consistency of the powder.

[0043] 4. Three-stage precision sorting improves the finished product qualification rate and raw material utilization rate. The three-stage hot air conveyor blower introduces hot air into the horizontal material transfer pipe, which can maintain the dryness and looseness of the powder during the transfer process, effectively preventing the powder from re-agglomerating and ensuring the smooth progress of the sorting operation. The grading drum, in conjunction with three arc-shaped screening screens with different mesh sizes, can quickly switch the screening screens according to actual production needs through periodic 120° rotation, achieving precise grading and screening of the modified powder. This allows powders that meet the particle size requirements to smoothly enter the subsequent collection unit, improving the utilization rate of raw materials and the qualification rate of finished products.

[0044] 5. The centralized and circuitous arrangement of multi-stage cylinders improves process continuity and reduces equipment footprint. The primary activation cylinder, secondary modification cylinder, and tertiary sorting cylinder are arranged in a triangular pattern between the first and second positioning plates of the main support base. The powder flows in a meandering manner through the inclined material transfer pipe and the horizontal material transfer pipe, eliminating the need for additional long-distance conveying devices. This significantly shortens the material transfer path and improves the continuity and compactness of the multi-stage activation and modification process. Compared with the traditional decentralized equipment structure, this centralized layout can effectively reduce the overall space occupied by the equipment, reduce the investment cost of plant infrastructure, and is more suitable for the production deployment needs of small and medium-sized processing sites.

[0045] 6. Finished product collection and conveying prevents powder splashing and agglomeration and ensures continuous and stable output. The negative pressure collection air pump creates a negative pressure airflow in the conveying and discharging pipe, which can quickly draw the sorted qualified powder into the conveying and discharging pipe, improving the efficiency of material collection. The buffer diversion wheel rotates slowly under the drive of a stepper motor. After the high-speed powder impacts the wheel, its kinetic energy is greatly reduced, avoiding direct impact on the inner wall of the collection box and preventing powder splashing and secondary agglomeration, thus achieving stable powder discharge. The finished product conveying air pump creates a positive pressure airflow in the longitudinal conveying square tube, which can efficiently transport the finished powder in the collection box to the designated storage equipment. The entire collection and conveying process is continuous and stable, ensuring that the quality of the finished powder is not damaged.

[0046] 7. Integrated continuous operation improves production efficiency and intelligence level. The integrated design of the raw material pretreatment unit, multi-stage continuous activation and modification unit, and collection and conveying unit enables continuous operation of the entire process of calcium hydroxide powder production, from raw material pretreatment, mechanical activation, coating modification, precise sorting to finished product collection. This significantly shortens the production process and improves production efficiency. The units work together through a hot air conveying system, enabling precise control of temperature and humidity. The parameters of each process can be flexibly adjusted according to production needs, adapting to the processing requirements of different specifications of high specific surface area calcium hydroxide powder. This reduces the intensity of manual operation and improves the level of intelligence and automation in the production process. Attached Figure Description

[0047] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0048] Figure 1 This is a schematic diagram of the overall external structure of the present invention in the main viewing direction; Figure 2 This is a schematic diagram of the overall external structure of the present invention from a top-down perspective; Figure 3 This is a schematic diagram of the overall external structure of the present invention from the left-side view direction; Figure 4 This is a schematic diagram of the overall external structure of the present invention from the right-side view direction; Figure 5 This is an isometric schematic diagram of the three-dimensional structure of the present invention; Figure 6 For the present invention along Figure 2 A schematic diagram of the internal structure cut along line AA in the middle; Figure 7 For the present invention along Figure 2 A schematic diagram of the internal structure cut along the middle BB line; Figure 8 For the present invention along Figure 2 A schematic diagram of the internal structure cut along the CC line; Figure 9 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the DD line in the middle; Figure 10 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the EE line; Figure 11 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the FF line; Figure 12 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the GG line in the middle; Figure 13 For the present invention along Figure 1 A schematic diagram of the internal structure cut along the HH line in the middle; Figure 14 For the present invention along Figure 3 A three-dimensional half-section diagram cut along the middle II line; Figure 15 For the present invention along Figure 4 A three-dimensional half-section diagram cut along the JJ line.

[0049] In the diagram: 1-Pretreatment support frame, 2-Pretreatment mounting plate, 3-Receiving hopper, 4-Pretreatment conveying pipe, 5-Screw conveyor, 6-Conveyor drive motor, 7-Spring support seat, 8-Vibration support plate, 9-Vibration deagglomeration hopper, 10-Miniature vibration motor, 11-Vibrating screen, 12-First-stage hot air conveyor fan, 13-Central base plate, 14-T-type support seat, 15-Main support seat, 16-First positioning plate, 17-Second positioning plate, 18-First-stage activation cylinder, 19-Second-stage modification cylinder, 20-Third-stage sorting cylinder, 21-Feeding connector, 22-Inclined material transfer pipe, 23-Second-stage hot air conveyor fan, 24-Horizontal material transfer pipe, 25-Third-stage hot air conveyor fan, 26-Motor support plate, 2 7-First rotating motor, 28-Main shaft, 29-Spiral guide plate, 30-High-speed impact blade, 31-Honeycomb inner core, 32-Second rotating motor, 33-Side turntable, 34-Stirring and turning plate, 35-Integrated box, 36-Compressed air pump, 37-Air storage tank, 38-Three-way feeding pipe, 39-Feed valve, 40-Dispersant feed pipe, 41-Atomizing nozzle, 42-Third rotating motor, 43-Grading drum, 44-Sorting feed inlet, 45-Screening screen, 46-Conveying discharge pipe, 47-Discharge connection port, 48-Negative pressure collecting air pump, 49-Collection box, 50-Stepper motor, 51-Buffer diverting wheel, 52-Longitudinal conveying square tube, 53-Finished product conveying air pump, 54-Glass window. Detailed Implementation

[0050] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0051] like Figures 1 to 15 As shown, the multi-functional continuous activation and modification machine for processing high specific surface area calcium hydroxide includes a raw material pretreatment unit, a multi-stage continuous activation and modification unit, and a collection and conveying unit.

[0052] The raw material pretreatment unit includes a pretreatment support frame 1, with the lower end of the pretreatment support frame 1 grounded at four feet, and a pretreatment mounting plate 2 fixed at the upper end of the pretreatment support frame 1. The pretreatment mounting plate 2 is a horizontally arranged square frame plate.

[0053] A receiving hopper 3 is fixed in the middle of the pretreatment mounting plate 2, and a pretreatment conveying pipe 4 connected to the lower end of the receiving hopper 3 is fixed thereto.

[0054] The pretreatment conveying pipe 4 is a horizontally extending, round-mouthed pipe with one end closed. A spiral conveying auger 5 is installed inside the pretreatment conveying pipe 4. A conveying drive motor 6 is fixed on the closed end face of the pretreatment conveying pipe 4. The end of the output shaft of the conveying drive motor 6 passes through the side wall of the pretreatment conveying pipe 4 and is fixedly connected to the end of the spiral conveying auger 5.

[0055] Four centrally symmetrical spring support seats 7 are fixed at the four corners of the upper surface of the pretreatment mounting plate 2. A horizontal vibration support plate 8 is fixed at the upper end of the four spring support seats 7. The vibration support plate 8 is a horizontally set square frame plate. A vibration depolymerization hopper 9 is fixed in the middle of the vibration support plate 8. The lower end of the vibration depolymerization hopper 9 extends into the receiving hopper 3.

[0056] Two miniature vibrating motors 10 are fixed at both ends of the lower part of the vibrating deagglomeration hopper 9, and a horizontal vibrating screen 11 is fixed on the circumferential inner wall of the vibrating deagglomeration hopper 9 near the lower end.

[0057] A primary hot air conveying fan 12 is fixed at the upper end of the pretreatment conveying pipe 4 near the opening. The primary hot air conveying fan 12 is positioned directly opposite the spiral conveying auger 5. The primary hot air conveying fan 12 can remove free water from the raw materials during the pretreatment process and realize subsequent temperature control and air conveying of the raw materials.

[0058] The multi-stage continuous activation modification unit includes a central base plate 13, which is a horizontally grounded square plate. Four T-shaped support seats 14 are fixed on the upper surface of the central base plate 13, and a main support seat 15 is fixed on the upper surface of the four T-shaped support seats 14. The main support seat 15 is a horizontally arranged square seat.

[0059] Two horizontally symmetrical first positioning plates 16 and second positioning plates 17 are fixed on the upper surface of the main support base 15. Both the first positioning plate 16 and the second positioning plate 17 are triangular plates.

[0060] A primary activation cylinder 18, a secondary modification cylinder 19, and a tertiary sorting cylinder 20 are fixedly installed between the first positioning plate 16 and the second positioning plate 17. The primary activation cylinder 18, the secondary modification cylinder 19, and the tertiary sorting cylinder 20 are all horizontally extending cylindrical cylinders and are distributed in a triangular shape. The secondary modification cylinder 19 and the tertiary sorting cylinder 20 are longitudinally symmetrical and are located close to the upper surface of the main support base 15. The primary activation cylinder 18 is located above the middle of the secondary modification cylinder 19 and the tertiary sorting cylinder 20.

[0061] The open end of the pretreatment conveying pipe 4 is fixed on the transverse outer wall of the first positioning plate 16 and is positioned directly opposite the first-stage activation cylinder 18. The first positioning plate 16 has a feed inlet 21 that connects the pretreatment conveying pipe 4 and the first-stage activation cylinder 18.

[0062] The primary activation cylinder 18 and the secondary modification cylinder 19 are connected by an inclined material transfer pipe 22. The inclined material transfer pipe 22 is located on the side near the second positioning plate 17, and a secondary hot air conveying fan 23 is fixed on the inclined material transfer pipe 22.

[0063] The secondary modification cylinder 19 and the tertiary sorting cylinder 20 are connected by a horizontal material transfer pipe 24. The horizontal material transfer pipe 24 is located on the side close to the first positioning plate 16, and a tertiary hot air conveying fan 25 is fixed on the horizontal material transfer pipe 24.

[0064] A horizontal motor support plate 26 is fixed on the second positioning plate 17. A first rotating motor 27 is fixed on the motor support plate 26. The output shaft end of the first rotating motor 27 passes through the second positioning plate 17 and is fixed with a main rotating shaft 28. The main rotating shaft 28 is located inside the first-stage activation cylinder 18 and extends laterally.

[0065] A spiral guide plate 29 is fixed on the inner peripheral wall of the primary activation cylinder 18 near the feed inlet 21. Several centrally symmetrical high-speed impact blades 30 are fixed on the outer peripheral wall of the main shaft 28 near the end. The high-speed impact blades 30 are located inside the spiral guide plate 29. The main shaft 28 and the high-speed impact blades 30 are driven by the first rotating motor 27 to rotate in the opposite direction to the spiral flow of the spiral guide plate 29. This can perform high-speed impact shearing on the material, activate the crystal lattice with mechanical force, introduce oxygen vacancies, and increase the specific surface area.

[0066] A honeycomb-shaped inner core 31 is also fixed on the inner peripheral wall of the primary activation cylinder 18. The honeycomb-shaped inner core 31 is located between the high-speed impact blade 30 and the inclined material transfer pipe 22. The honeycomb-shaped inner core 31 can break up the soft agglomeration of powder by constructing a vortex disturbance field and enhance the mechanical activation energy transfer by constraining the movement trajectory of particles.

[0067] A second rotating motor 32 is fixed on one side of the upper surface of the main support base 15. The output shaft of the second rotating motor 32 passes through the side wall of the first positioning plate 16, extends into the secondary modification cylinder 19, and is fixedly connected to a side turntable 33. Three centrally symmetrical stirring and turning plates 34 are fixed on the side end face of the side turntable 33. The back of the stirring and turning plates 34 is set close to the inner peripheral wall of the secondary modification cylinder 19.

[0068] An integrated box 35 is fixed on the other side of the upper surface of the main support base 15. The integrated box 35 is located on the opposite side of the second rotating motor 32. A compressed air pump 36 is fixed on the upper surface of the integrated box 35. An air storage tank 37 connected to the compressed air pump 36 is fixed on the outer wall of the integrated box 35. A three-way feeding pipe 38 connected to the air storage tank 37 is fixed inside the integrated box 35. The longitudinal part of the three-way feeding pipe 38 passes through the integrated box 35 and extends to its outer side. A feed valve 39 is provided on the three-way feeding pipe 38.

[0069] The second positioning plate 17 is fixed with a dispersant feed pipe 40 that is connected to the three-way feed pipe 38. The dispersant feed pipe 40 is located inside the secondary modification cylinder 19 and extends laterally. Several atomizing nozzles 41 are provided on the dispersant feed pipe 40 along the circumferential and axial directions.

[0070] A third rotating motor 42 is also fixed on one side of the upper surface of the main support base 15. The third rotating motor 42 and the second rotating motor 32 are arranged longitudinally symmetrically. The output shaft end of the third rotating motor 42 passes through the first positioning plate 16 and is fixed with a grading rotating cylinder 43. The grading rotating cylinder 43 is a cylindrical tube with a single-sided opening and a lateral extension.

[0071] The outer peripheral wall of the grading drum 43 has three centrally symmetrical sorting inlets 44, and each sorting inlet 44 has an arc-shaped screening screen plate 45 fixed inside. The mesh size of the three screening screen plates 45 decreases sequentially.

[0072] The collection and conveying unit includes a conveying and discharging pipe 46. One end of the conveying and discharging pipe 46 is fixed on the transverse outer wall of the second positioning plate 17. The conveying and discharging pipe 46 is positioned directly opposite the three-stage sorting cylinder 20. The second positioning plate 17 has a discharge port 47 that connects the conveying and discharging pipe 46 and the three-stage sorting cylinder 20.

[0073] A negative pressure air collection pump 48 is installed in the middle section of the conveying and discharge pipe 46.

[0074] The collection and conveying unit also includes a collection box 49, which is a square box with an open bottom and a tapering shape. The end of the conveying discharge pipe 46 is fixedly connected to the collection box 49.

[0075] A stepper motor 50 is fixed on the transverse outer wall of the collection box 49. The output shaft of the stepper motor 50 passes through the side wall of the collection box 49 and is fixed with a buffer diversion wheel 51. The buffer diversion wheel 51 is set directly opposite the conveying discharge pipe 46.

[0076] A longitudinal conveying square tube 52 is fixed to the lower end of the collection box 49, and a finished product conveying air pump 53 is fixed to the closed end face of the longitudinal conveying square tube 52.

[0077] Glass windows 54 are provided on the primary activation cylinder 18, the secondary modification cylinder 19 and the tertiary sorting cylinder 20 respectively.

[0078] When using this invention: First, the raw material is pre-treated: the calcium hydroxide powder to be processed is fed into the top of the vibrating deagglomeration hopper 9, and the two micro vibration motors 10 are started. The vibrating deagglomeration hopper 9 then generates high-frequency vibration. The powder moves downward under the action of vibration and passes through the vibrating screen 11. The screen can intercept large undispersed agglomerates in the powder, and achieve preliminary deagglomeration and screening. The powder that meets the particle size requirements passes through the screen and falls into the receiving hopper 3 below. The powder in the receiving hopper 3 enters the horizontally arranged pretreatment conveying pipe 4. The conveying drive motor 6 drives the screw conveyor 5 to rotate, pushing the powder to move axially along the pretreatment conveying pipe 4. At the same time, the primary hot air conveying fan 12 starts and introduces hot air into the pretreatment conveying pipe 4. The hot air comes into full contact with the powder pushed by the screw conveyor 5, which on the one hand quickly removes free water in the powder and reduces the moisture content of the raw material, and on the other hand achieves temperature control of the powder to avoid the modification effect being affected by excessively high or low temperatures during the subsequent activation process. At the same time, the wind field formed by the hot air can assist in the powder conveying and ensure that the material enters the subsequent unit stably.

[0079] Then, multi-stage continuous activation and modification are carried out: the pretreated calcium hydroxide powder enters the first-stage activation cylinder 18 through the feed inlet 21. The first rotating motor 27 drives the main rotating shaft 28 and the high-speed impact blade 30 to rotate at high speed, ensuring that the rotation direction is opposite to the flow direction of the spiral guide plate 29 on the inner wall of the first-stage activation cylinder 18. Under the guidance of the spiral guide plate 29, the powder moves in a spiral trajectory and is simultaneously subjected to strong impact and shearing by the high-speed impact blade 30. The crystal lattice of the powder particles is distorted, the number of lattice defects increases, oxygen vacancies are introduced, and the specific surface area of ​​the particles is initially increased. Subsequently, the powder moves to the honeycomb inner core 31 region. The vortex disturbance field constructed by the honeycomb inner core 31 changes the trajectory of the powder particles. High-frequency collisions and friction occur between the particles, further breaking up the soft agglomeration of the powder, strengthening the mechanical activation energy transfer, and completing the first stage of mechanical activation of the powder. After primary activation, the powder enters the secondary modification cylinder 19 through the inclined material transfer pipe 22. The secondary hot air conveying fan 23 introduces hot air into the transfer pipe to maintain the temperature stability of the powder and assist in material conveying. At the same time, the compressed air pump 36 starts and introduces compressed air into the air storage tank 37. The compressed air then quantitatively delivers the modified dispersant added through the three-way feeding pipe 38 to the dispersant feed pipe 40. The dispersant is atomized by the atomizing nozzles 41 arranged circumferentially and axially in the feed pipe and then evenly sprayed into the secondary modification cylinder 19. The second rotating motor 32 drives the side turntable 33 and the stirring and turning plate 34 to rotate. The stirring and turning plate 34 scrapes against the inner wall of the secondary modification cylinder 19, causing the powder and atomizing dispersant in the cylinder to mix and collide fully. The dispersant forms a uniform coating layer on the surface of the powder particles, thus completing the modification treatment of the powder. The modified powder enters the three-stage sorting cylinder 20 through the horizontal material transfer pipe 24. The three-stage hot air conveying fan 25 introduces hot air into the horizontal material transfer pipe 24 to maintain the dryness and looseness of the powder during the transfer process, prevent the powder from agglomerating again, and assist in material conveying. The third rotating motor 42 drives the grading drum 43 to rotate 120° periodically. According to the actual sorting requirements, the sieve plates 45 with different mesh sizes are aligned with the opening of the horizontal transfer tube. The powder that meets the requirements passes through the sieve plates 45 and enters the grading drum 43, and then enters the subsequent collection unit.

[0080] Finally, the finished product is collected and transported: the negative pressure collection air pump 48 is started to form a negative pressure airflow in the conveying and discharge pipe 46. The qualified calcium hydroxide powder after sorting enters the conveying and discharge pipe 46 through the discharge port 47. Under negative pressure, the powder moves rapidly toward the collection box 49. After entering the collection box 49, the buffer diversion wheel 51 facing the conveying discharge pipe 46 rotates slowly under the drive of the stepper motor 50. The high-speed powder impacts the buffer diversion wheel 51, reducing its kinetic energy and preventing direct impact on the inner wall of the collection box 49, which would cause powder splashing and agglomeration, thus achieving stable powder discharge. The finished powder in the collection box 49 falls into the longitudinal conveying square tube 52. The finished product conveying air pump 53 is started, and a positive pressure airflow is formed in the longitudinal conveying square tube 52 to transport the finished powder to the designated storage equipment, thus completing the entire continuous activation and modification process of high specific surface area calcium hydroxide.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, 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 or all of the technical features. Such 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 the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A multi-functional continuous activation and modification machine for processing high specific surface area calcium hydroxide, characterized in that: It includes a raw material pretreatment unit, a multi-stage continuous activation and modification unit, and a collection and conveying unit; The multi-stage continuous activation and modification unit includes a main support base. Two horizontally symmetrical first positioning plates and second positioning plates are fixed on the upper surface of the main support base. A first-stage activation cylinder, a second-stage modification cylinder, and a third-stage sorting cylinder are fixedly installed between the first positioning plate and the second positioning plate. The first-stage activation cylinder, the second-stage modification cylinder, and the third-stage sorting cylinder are all horizontally extending cylindrical cylinders and are distributed in a triangular shape. An inclined material transfer pipe is fixed between the primary activation cylinder and the secondary modification cylinder, and a horizontal material transfer pipe is fixed between the secondary modification cylinder and the tertiary sorting cylinder. A spiral guide plate is fixed on the inner peripheral wall of the primary activation cylinder near the first positioning plate. A main shaft is rotatably installed inside the primary activation cylinder. Several centrally symmetrical high-speed impact blades are fixed on the outer peripheral wall of the main shaft near the end. Several high-speed impact blades are located inside the spiral guide plate. A honeycomb-shaped inner core is also fixed on the inner circumferential wall of the middle section of the primary activation cylinder; The secondary modification cylinder is fixed with a laterally extending dispersant feed pipe. Several atomizing nozzles are provided on the dispersant feed pipe along the circumferential and axial directions. Three centrally symmetrical stirring and turning plates are rotatably provided on the outside of the dispersant feed pipe. The three-stage sorting cylinder is equipped with a grading drum that rotates inside. The grading drum is located near the side of the horizontal material transfer pipe. Three centrally symmetrical sorting inlets are opened on the outer peripheral wall of the grading drum. An arc-shaped screening screen plate is fixed inside the sorting inlet. The mesh size of the three screening screen plates decreases sequentially.

2. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 1, characterized in that: The raw material pretreatment unit includes a pretreatment support frame, the lower end of which is grounded on all four sides, and the upper end of which is fixed with a pretreatment mounting plate, which is a horizontally arranged square frame plate. A receiving hopper is fixed in the middle of the pretreatment mounting plate, and a pretreatment conveying pipe connected to the lower end of the receiving hopper is fixed thereto. The pretreatment conveying pipe is a horizontally extending, round-mouthed pipe with one end closed. A spiral conveying auger is installed inside the pretreatment conveying pipe. A conveying drive motor is fixed on the closed end face of the pretreatment conveying pipe. The end of the output shaft of the conveying drive motor passes through the side wall of the pretreatment conveying pipe and is fixedly connected to the end of the spiral conveying auger.

3. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 2, characterized in that: The upper surface of the pretreatment mounting plate is fixed with four centrally symmetrical spring support seats at the four corners. A horizontal vibration support plate is fixed at the upper end of the four spring support seats. The vibration support plate is a horizontally set square frame plate. A vibration depolymerization hopper is fixed in the middle of the vibration support plate. The lower end of the vibration depolymerization hopper extends into the receiving hopper. Two miniature vibrating motors are fixed at both ends of the lower part of the vibrating depolymerization hopper, and a horizontal vibrating screen is fixed on the circumferential inner wall of the vibrating depolymerization hopper near the lower end. A primary hot air conveying fan is fixed at the upper end of the pretreatment conveying pipe near the opening, and the primary hot air conveying fan is positioned directly opposite the spiral conveying auger.

4. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 1, characterized in that: The main support base is a horizontally arranged square base. A central base plate is provided below the main support base. The central base plate is a horizontally grounded square plate. Four T-shaped support bases are fixed on the upper surface of the central base plate in pairs. The upper ends of the four T-shaped support bases are fixed to the lower surface of the main support base. Both the first positioning plate and the second positioning plate are triangular plates; The secondary modification cylinder and the tertiary sorting cylinder are arranged longitudinally symmetrically and close to the upper surface of the main support base, and the primary activation cylinder is located above the middle of the secondary modification cylinder and the tertiary sorting cylinder.

5. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 2, characterized in that: The open end of the pretreatment conveying pipe is fixed on the transverse outer wall of the first positioning plate and is positioned directly opposite the primary activation cylinder. The first positioning plate has a feed inlet that connects the pretreatment conveying pipe and the primary activation cylinder. The inclined material transfer pipe is located near the second positioning plate, and a secondary hot air conveying fan is fixed on the inclined material transfer pipe. The horizontal material transfer pipe is located near the first positioning plate, and a tertiary hot air conveying fan is fixed on the horizontal material transfer pipe.

6. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 1, characterized in that: A horizontal motor support plate is fixed on the second positioning plate, and a first rotating motor is fixed on the motor support plate. The end of the output shaft of the first rotating motor passes through the second positioning plate and is fixed to the end of the main rotating shaft. A second rotating motor is fixed to one side of the upper surface of the main support base. The output shaft of the second rotating motor passes through the side wall of the first positioning plate, extends into the secondary modification cylinder, and is fixedly connected to a side turntable. The ends of the three stirring and turning plates are fixed to the side end face of the side turntable. The back of the stirring and turning plates is set close to the inner peripheral wall of the secondary modification cylinder. The grading drum is a cylindrical tube with a single-sided opening and a laterally extending shape. A third rotating motor is also fixed on one side of the upper surface of the main support base. The third rotating motor is arranged symmetrically with the second rotating motor in the longitudinal direction. The end of the output shaft of the third rotating motor passes through the first positioning plate and is fixed to the closed end face of the grading drum.

7. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 6, characterized in that: An integrated box is fixed to the other side of the upper surface of the main support base. The integrated box is located on the opposite side of the second rotating motor. A compressed air pump is fixed to the upper surface of the integrated box. An air storage tank connected to the compressed air pump is fixed to the outer wall of the integrated box. A three-way feeding pipe connected to the air storage tank is fixed inside the integrated box. The end of the dispersant feed pipe is fixed to the second positioning plate and connected to the three-way feeding pipe. The longitudinal portion of the three-way feeding pipe passes through the integrated box and extends to its outer side, and the three-way feeding pipe is equipped with a feeding valve.

8. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 1, characterized in that: The collection and conveying unit includes a conveying and discharging pipe. One end of the conveying and discharging pipe is fixed on the transverse outer wall of the second positioning plate. The conveying and discharging pipe is positioned directly opposite the three-stage sorting cylinder. The second positioning plate has a discharge port that connects the conveying and discharging pipe and the three-stage sorting cylinder. The middle section of the conveying and discharging pipe is equipped with a negative pressure collecting air pump.

9. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 8, characterized in that: The collection and conveying unit also includes a collection box, which is a square box with an open bottom and a tapering shape. The end of the conveying outlet pipe is fixedly connected to the collection box. A stepper motor is fixed on the transverse outer wall of the collection box. The end of the output shaft of the stepper motor passes through the side wall of the collection box and is fixed with a buffer diverting wheel. The buffer diverting wheel is positioned directly opposite the conveying discharge pipe.

10. The multifunctional continuous activation and modification machine for processing high specific surface area calcium hydroxide according to claim 9, characterized in that: The lower end of the collection box is fixed with a longitudinal conveying square tube, and the closed end face of the longitudinal conveying square tube is fixed with a finished product conveying air pump.

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