Construction waste synergetic fly ash preparation equipment

Abstract

The invention relates to the technical field of crushers, in particular to construction waste synergistic fly ash preparation equipment which comprises a rack, a crushing assembly and a driving assembly, and the crushing assembly and the driving assembly are fixedly mounted on the rack; the crushing assembly comprises a crushing box, a movable jaw piece and at least one crushing roller arranged in the crushing box, the movable jaw piece is arranged in the crushing box in a swinging mode and connected with the driving assembly, and the driving assembly is used for driving the movable jaw piece to be close to or away from the crushing roller to cooperatively crush materials; the driving assembly is configured to synchronously promote coal ash contained in the powder cavity to be released into the crushing box through the powder spraying holes in the process that the swinging jaw plate is driven to swing towards the crushing roller so as to execute crushing operation. The problem that powder cannot be mixed into a crusher due to powder agglomeration and blockage of a traditional external fly ash adding system is solved.

Description

Technical Field

[0001] This invention relates to the field of crusher technology, specifically to a fly ash preparation device for co-processing construction waste. Background Technology

[0002] In the resource utilization of construction solid waste, especially in the process of preparing recycled aggregates from waste concrete, the crusher, as the core crushing equipment, has long been limited to the simple mechanical reduction of material size. Traditional crushers rely on the reciprocating oscillation of the moving jaw relative to the fixed jaw to crush concrete blocks through forces such as compression and bending, resulting in relatively singular design goals and functional outputs. However, with the continuous improvement of the performance requirements of recycled building materials, in order to improve the microstructure of recycled aggregates, enhance their activity, and improve the durability of the final product, the simultaneous and uniform incorporation of auxiliary cementitious materials such as fly ash and sodium sulfide during the crushing stage has become an effective technical direction. However, the existing technical path to achieve this goal faces significant challenges: ultrafine powders such as fly ash, due to their large specific surface area and high surface energy, are extremely susceptible to moisture and generate strong intermolecular adsorption, leading to severe agglomeration, clumping, and even blockage during storage, transportation, and spraying. Current common solutions often employ independent powder storage silos, closed conveying pipelines, and dedicated pneumatic injection devices to feed fly ash into the crusher to combine with concrete aggregates. This external addition system not only makes the entire production line layout cumbersome, requires a large area, and incurs high investment and operating costs, but its static powder injection unit also struggles to completely overcome the problem of fly ash agglomeration. Even with the addition of mechanical arch breakers or fluidizers, there are often drawbacks such as high energy consumption, frequent maintenance, and difficulty in controlling the uniformity of mixing.

[0003] Therefore, in view of this, the inventors propose a fly ash preparation device for co-processing construction waste to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a fly ash preparation device for co-processing construction waste, so as to solve the problem that traditional external fly ash addition systems cannot be mixed into the crusher due to powder agglomeration and blockage.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A fly ash preparation device for co-processing construction waste includes a frame, a crushing component, and a drive component, wherein the crushing component and the drive component are fixedly mounted on the frame. The crushing assembly includes a crushing box, a movable jaw, and at least one crushing roller disposed within the crushing box. The movable jaw is oscillatingly disposed within the crushing box and connected to the driving assembly. The driving assembly is used to drive the movable jaw closer to or further away from the crushing roller to cooperate in crushing the material. The movable jaw component includes a swing jaw plate and a cover. The swing jaw plate defines a powder cavity for containing fly ash. At least one powder injection hole communicating with the powder cavity is provided on the working surface of the swing jaw plate. The drive assembly is configured to simultaneously cause fly ash contained in the powder chamber to be released into the crushing box through the powder injection hole during the process of driving the swing jaw plate to swing toward the crushing roller to perform the crushing operation.

[0006] Furthermore, the drive assembly includes a drive component, a conversion component, and a pusher component. The conversion component is mounted on the frame, the drive component is connected to the conversion component, the conversion component is connected to the pusher component, and the pusher component is connected to the moving jaw component.

[0007] Furthermore, the conversion component includes two fixed cylinders and a pneumatic component disposed between the two fixed cylinders, with the two fixed cylinders fixedly mounted on the frame; Both of the fixed cylinders are equipped with rotating shafts that rotate rotatably, and the ends of the two rotating shafts that are far apart from each other are respectively connected to a first pulley and a second pulley; The pneumatic component includes a base plate frame and two gear rings fixedly mounted on the base plate frame. Each gear ring is fixedly connected to a corresponding fixed cylinder. A gear is provided inside each gear ring. An eccentric rod is connected between the two gears. Two connecting rods are connected to both ends of the eccentric rod. The two connecting rods are respectively connected to the two rotating shafts. A hinge rod is sleeved in the middle of the eccentric rod. A sleeve is fixedly installed at the bottom of the seat plate frame, and a piston column is slidably connected inside the sleeve. A push rod is fixedly installed on the piston column, and both ends of the push rod completely penetrate the piston column. The bottom end of the hinge rod is hinged to the top end of the push rod.

[0008] Furthermore, the pushing component includes a pushing seat and a movable rod. The bottom of the pushing rod passes through the sleeve and is fixedly connected to the pushing seat. One end of the movable rod is hinged to the pushing seat, and the other end of the movable rod is hinged to the swing jaw plate. A pull rod is hinged to the bottom of the swing jaw plate. The pull rod is slidably mounted on the frame. A spring is sleeved on the pull rod. The spring, through the pull rod, tends to drive the swing jaw plate away from the crushing roller.

[0009] Furthermore, the piston rod divides the sleeve into a first chamber and a second chamber. The first chamber is connected to a first inlet pipe and a first outlet pipe. A first one-way valve is provided at the first inlet pipe, and a second one-way valve is provided at the first outlet pipe. The second chamber is connected to a first inlet pipe and a first outlet pipe. A third check valve is installed at the first inlet pipe, and a fourth check valve is installed at the first outlet pipe.

[0010] Furthermore, the bottom of the swing jaw plate is provided with a powder outlet chamber, which is located between the powder chamber and the powder spraying hole, and the powder outlet chamber is connected to the first air outlet pipe; A valve diaphragm is provided between the powder chamber and the powder outlet chamber.

[0011] Furthermore, the bottom of the swing jaw plate is provided with a liquid outlet chamber, which is connected to the first liquid outlet pipe, and the swing jaw plate is provided with a liquid outlet nozzle that is connected to the liquid outlet chamber.

[0012] Furthermore, the driving component includes a motor, the output shaft of which is connected to a drive pulley, and a first belt is tensioned between the drive pulley and the first pulley; A driven pulley is coaxially fixedly connected to the crushing roller, and a second belt is tensioned between the driven pulley and the second pulley.

[0013] Furthermore, a groove is formed on the crushing roller, and a plurality of crushing hammers are hinged in the groove.

[0014] Furthermore, the oscillating jaw plate has teeth formed on the side near the crushing roller.

[0015] The beneficial effects of this invention: This invention integrates the fly ash storage chamber directly into the interior of the swing jaw plate and utilizes the same power source driving the swing jaw plate to synchronously generate a powder injection airflow. This establishes a time-locked mechanism for the crushing action, powder injection power, and coating timing. When the swing jaw plate compresses the material to generate maximum crushing force, a high-pressure powder injection airflow is simultaneously formed, allowing the fly ash to be directly injected into the core crushing zone from the powder injection holes on the working surface of the swing jaw plate, making immediate contact with the fresh aggregate cross-sections generated by pyrolysis. At this moment, the surface of the newly formed aggregate has the highest surface energy and chemical activity. Driven by the airflow, the fly ash particles instantly coat these active cross-sections, achieving firm adhesion not only through physical adsorption but also immediately initiating a hydration reaction to complete in-situ activation, forming a uniformly distributed modified layer at the microscale. This synergistic mode of fracture-coating and crushing-modification completely solves the problem of uneven mixing caused by asynchronous crushing and powder injection and excessively long conveying paths in traditional external additive systems, significantly improving the utilization rate of fly ash.

[0016] This invention eliminates the separate powder storage bins, conveying pipelines, and injection devices found in traditional systems. It integrates the powder chamber, powder injection channel, gas-liquid supply system, and crushing components into a single unit, significantly reducing the equipment footprint and initial investment costs. Simultaneously, by utilizing the inherent mechanical vibrations generated by the reciprocating oscillation of the swing jaw plate and the rotating impact of the crushing rollers during operation, the fly ash within the powder chamber is constantly under forced micro-vibration. This high-frequency vibration disrupts the van der Waals forces and electrostatic adsorption between powder particles, preventing agglomeration and arched blockage at the source. This replaces traditional mechanical arch-breaking or fluidization devices that require additional energy, effectively reducing operating energy consumption. Furthermore, a single motor drive achieves synchronous linkage between the swing jaw plate oscillation, crushing roller rotation, and gas-liquid injection, ensuring a synergistic match between crushing efficiency and modification effect.

[0017] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application can be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the fly ash preparation equipment for co-processing construction waste according to the present invention, taken from the first direction. Figure 2 This is a schematic diagram of the overall structure of the fly ash preparation equipment for co-processing construction waste according to the present invention from a second direction; Figure 3 This is a schematic diagram of the overall structure of the fly ash preparation equipment for co-processing construction waste according to the present invention from the third direction; Figure 4 This is a cross-sectional schematic diagram of the fly ash preparation equipment for co-processing construction waste according to the present invention; Figure 5 In the fly ash preparation equipment for co-processing construction waste of the present invention Figure 4 Schematic diagram of part A; Figure 6 This is a schematic diagram of the pneumatic components in the fly ash preparation equipment for co-processing construction waste according to the present invention; Figure 7 This is a schematic diagram of the crushing roller in the fly ash preparation equipment for co-processing construction waste according to the present invention; Figure 8 In the fly ash preparation equipment for co-processing construction waste of the present invention Figure 2 A schematic diagram of part B of the structure.

[0019] The components include: frame 1, crushing assembly 2, crushing box 21, moving jaw 22, swing jaw plate 221, cover 222, powder chamber 223, powder injection hole 224, crushing roller 23, drive assembly 3, drive component 31, conversion component 32, fixed cylinder 321, pneumatic component 322, seat plate frame 3221, gear ring 3222, gear 3223, eccentric rod 3224, connecting rod 3225, hinge rod 3226, sleeve 3227, and piston. Column 3228, push rod 3229, rotating shaft 323, first pulley 324, second pulley 325, pusher 33, push seat 331, movable rod 332, pull rod 333, spring 334, first chamber 41, second chamber 42, first air inlet pipe 43, first air outlet pipe 44, first liquid inlet pipe 45, first liquid outlet pipe 46, powder outlet chamber 47, liquid outlet chamber 48, liquid outlet nozzle 49, motor 5, driven pulley 6, breaker hammer 7. Detailed Implementation

[0020] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and are not intended to limit the scope of protection of the present invention.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0022] This embodiment proposes a fly ash preparation device that utilizes construction waste, such as... Figures 1 to 8As shown, the device includes a frame 1, a crushing assembly 2, and a drive assembly 3. The crushing assembly 2 and the drive assembly 3 are fixedly mounted on the frame 1. The crushing assembly 2 includes a crushing box 21, a movable jaw 22, and at least one crushing roller 23 disposed within the crushing box 21. In this embodiment, it is preferable that there is one crushing roller 23. The movable jaw 22 is oscillatingly disposed within the crushing box 21 and connected to the drive assembly 3. The drive assembly 3 is used to drive the movable jaw 22 to move closer to or away from the crushing roller 23 to cooperate in crushing materials. The movable jaw 22 includes a swing jaw plate 221 and a cover 222. The top of the swing jaw plate 221 is rotatably mounted on the crushing box 21. The cover 222 is closably mounted on the swing jaw plate 221. The swing jaw plate 221 defines a powder cavity 223 for containing fly ash. When the cover 222 is opened, fly ash can be filled into the powder cavity 223. The working surface of the swing jaw plate 221 (i.e. the right side of the swing jaw plate 221) is provided with at least one powder injection hole 224 that communicates with the powder cavity 223. The drive assembly 3 is configured to simultaneously cause the fly ash contained in the powder cavity 223 to be released into the crushing box 21 through the powder injection hole 224 during the process of driving the swing jaw plate 221 to swing toward the crushing roller 23 to perform the crushing operation.

[0023] In this embodiment, after the drive assembly 3 is started, it drives the swing jaw plate 221 to swing periodically toward the crushing roller 23 (i.e., Figure 4 The swing jaw plate 221 swings left and right, thereby squeezing and crushing the construction waste (such as waste concrete blocks without steel bars) put into the crushing box 21. At the same time, the drive component 3 will also generate an airflow during the physical action of driving the swing jaw plate 221 to perform the crushing stroke. The airflow acts on the powder chamber 223 inside the swing jaw plate 221. The fly ash pre-stored in the powder chamber 223 is forced to be sprayed out from the powder injection hole 224 opened on the working surface under the drive of the airflow. Since the powder injection hole 224 is directly facing the dynamic crushing area in the crushing box 21, the sprayed fly ash can fully contact, collide and mix with the surface of the crushed aggregate that is being crushed and splashed at the first time. Thus, the fly ash is accurately and synchronously added and coated on the surface of the aggregate during the crushing operation, and the integrated collaborative operation of crushing and active material modification is completed.

[0024] It should be noted that in traditional external addition systems, fly ash needs to be transported from a separate silo through long pipelines, which is prone to agglomeration due to moisture and static electricity, and blockage at bends and valves. In this application, the powder chamber 223 is directly integrated inside the swing jaw plate 221. The physical distance between the fly ash storage point (powder chamber 223) and the release point (powder injection hole 224) is extremely short, and the conveying path is simplified to a closed chamber and short channel inside the swing jaw plate 221, resulting in a more compact structure. Moreover, the crushing and powder injection actions of traditional external systems are managed by two independent drive and control units, making it difficult to achieve true "synchronization," resulting in a time difference and easily leading to uneven mixing. In this invention, the release power of fly ash directly originates from the same set of drive components 3 that drive the swing jaw plate 221, which means that the timing is synchronized: as soon as the swing jaw plate 221 begins to crush the material, the powder injection action will inevitably start synchronously. The moment when the crushing force of the swing jaw plate 221 is the greatest and the newly generated surface area is the moment when fly ash is injected. The powder injection hole 224 is located on the working surface of the swing jaw plate 221 that directly participates in the crushing. The fly ash is directly injected into the core crushing and crushing zone and combines with the fresh aggregate cross-section that has just been cracked and has high surface activity in the first instant, realizing "instant coating" at the microscale. From the microscopic mechanism, the newly generated aggregate at this time With the highest surface energy and chemical activity, fly ash particles, driven by high-pressure airflow, instantly coat these fresh cross-sections with maximum spray volume. This not only allows them to adhere more firmly to concrete aggregates through physical adsorption, facilitating subsequent hydration reactions and achieving in-situ activation of recycled aggregates, but also ensures, from a macroscopic process perspective, that limited functional materials are preferentially and precisely applied to the surfaces of newly formed aggregates that most require modification. This avoids wasting fly ash on broken old surfaces or equipment inner walls, improving mixing uniformity and aggregate modification effects while maximizing the utilization rate of functional materials. This efficiency advantage cannot be achieved by any asynchronous or location-separated addition method.

[0025] In a preferred embodiment, the drive assembly 3 includes a drive member 31, a conversion member 32, and a pusher member 33. The conversion member 32 is mounted on the frame 1. The drive member 31 is connected to the conversion member 32, the conversion member 32 is connected to the pusher member 33, and the pusher member 33 is connected to the moving jaw member 22. The conversion component 32 includes two fixed cylinders 321 fixed on the frame 1 and a pneumatic component 322 disposed between the two fixed cylinders 321. A rotating shaft 323 is rotatably disposed inside each of the two fixed cylinders 321. The ends of the two rotating shafts 323 that are far apart from each other are respectively connected to a first pulley 324 and a second pulley 325. The pneumatic component 322 includes a base plate frame 3221 and two gear rings 3222 fixedly mounted on the base plate frame 3221. Each gear ring 3222 is fixedly connected to the corresponding fixed cylinder 321. A gear 3223 is disposed inside each gear ring 3222. An eccentric rod 3224 is rotatably connected between the two gears 3223. Two connecting rods 3225 are connected to both ends of the eccentric rod 3224. The two connecting rods 3225 are respectively connected to the two rotating shafts 323. A hinge rod 3226 is sleeved in the middle of the eccentric rod 3224. In one possible embodiment, the design may also be carried out without using gears 3223. A sleeve 3227 is fixedly installed at the bottom of the seat plate frame 3221. A piston column 3228 is slidably connected inside the sleeve 3227. A push rod 3229 is fixedly installed on the piston column 3228. Both ends of the push rod 3229 completely penetrate the piston column 3228. The bottom end of the hinge rod 3226 is hinged to the top end of the push rod 3229.

[0026] In this embodiment, the drive component 31 drives the first pulley 324 to rotate via belt transmission, thereby causing the rotating shaft 323 inside the fixed cylinder 321 to rotate. This rotation is transmitted to the eccentric rod 3224 via the connecting rod 3225, causing it to perform eccentric circular motion around the center of the rotating shaft 323. The hinge rod 3226 in the middle of the eccentric rod 3224 swings up and down with the eccentric motion, and pulls the push rod 3229 and piston rod 3228 hinged to it to perform reciprocating linear motion within the sleeve 3227. The reciprocating motion of the piston rod 3228 causes it to... A chamber with varying volume is formed within the sleeve 3227. Simultaneously, the reciprocating linear motion of the bottom of the push rod 3229 is converted into the periodic oscillation of the swing jaw plate 221 toward or away from the crushing roller 23 through the transmission of the push seat 331 and the movable rod 332, thereby performing the crushing operation on the material. Throughout the process, the crushing oscillation and the piston movement that generates the blowing power are strictly synchronized and of the same origin, both achieved by the same set of precisely designed rotary drive conversion components 32, ensuring the matching of mechanical crushing and fly ash addition in terms of time and intensity. This ensures that the stroke of the swing jaw plate 221 in each crushing operation corresponds perfectly to the stroke of the piston compression that generates the blowing power, so that the fly ash injection pulse coincides with the moment of the formation of the new fracture surface of the aggregate, achieving "fracture as coating" at the microscopic scale; moreover, no additional power source is required, resulting in a compact structure.

[0027] The pusher 33 includes a pusher seat 331 and a movable rod 332. The bottom of the push rod 3229 is fixedly connected to the pusher seat 331 through the sleeve 3227. The left end of the movable rod 332 is hinged to the pusher seat 331, and the right end of the movable rod 332 is hinged to the swing jaw plate 221. A pull rod 333 is hinged to the bottom of the swing jaw plate 221. The pull rod 333 is slidably mounted on the frame 1. A spring 334 is sleeved on the pull rod 333. The spring 334 has a tendency to drive the swing jaw plate 221 away from the crushing roller 23 through the pull rod 333. When push rod 3229 moves upward under piston drive, it drives push seat 331, which is fixedly connected to the bottom, to rise together. Push seat 331 converts the upward thrust into a horizontal thrust towards crushing roller 23 through movable rod 332 hinged to it, driving swing jaw plate 221 to swing to the right around its upper hinge point towards crushing roller 23 to perform crushing operation; at the same time, pull rod 333 at the bottom of swing jaw plate 221 is pulled and slides in the slide of frame 1, so the spring 334 sleeved on pull rod 333 is compressed and stores energy; when the crushing stroke ends, push rod 3229 moves upward. When the 229 jaw plate 221 begins to move downward under the drive assembly 3, the push seat 331 descends accordingly. At this time, the compressed spring 334 releases its stored elastic energy, applying a pull force away from the crushing roller 23 to the bottom of the swing jaw plate 221 through the pull rod 333. This assists and ensures that the swing jaw plate 221 quickly and reliably resets and retracts, thus preparing space for the next feeding and crushing stroke. The reset action of the spring 334, combined with the reverse movement of the drive assembly 3, not only ensures the stability and response speed of the reciprocating motion of the swing jaw plate 221, but more importantly, the swing... The jaw plate 221 retracts rapidly under the action of the spring 334; during operation, the reciprocating swing of the swing jaw plate 221, the rotating impact of the breaker hammer 7, and the transmission of various components will cause the entire equipment to generate continuous, high-frequency mechanical vibration; this vibration is transmitted through the frame 1 to the swing jaw plate 221 body integrated with the powder chamber 223, so that the fly ash inside is always in a forced micro-vibration state, effectively destroying the stable agglomeration structure formed between powder particles by van der Waals forces, electrostatic adsorption, and capillary action, thereby preventing the formation of arched stress bridges at the source; at the same time, the vibration energy continues to act The valve diaphragm and powder flow path between the powder chamber 223 and the powder outlet chamber 47 dynamically loosen and unblock any initial agglomeration that may occur. This is equivalent to having a built-in "mechanical arch breaker" that operates around the clock without additional energy consumption. This method of using the equipment's native working vibration to activate the powder and prevent blockage not only completely eliminates the complexity and failure rate of traditional static silos that rely on external arch-breaking devices, but also ensures that fly ash can maintain a uniform, stable, and controllable flow state under harsh working conditions, thus guaranteeing the continuity and reliability of the synchronous addition process.

[0028] In a preferred embodiment, the piston rod 3228 divides the sleeve 3227 into a first chamber 41 and a second chamber 42. The first chamber 41 is connected to a first air inlet pipe 43 and a first air outlet pipe 44. A first one-way valve is provided at the first air inlet pipe 43 and a second one-way valve is provided at the first air outlet pipe 44. The second chamber 42 is connected to a first liquid inlet pipe 45 and a first liquid outlet pipe 46. A third one-way valve is provided at the first liquid inlet pipe 45 and a fourth one-way valve is provided at the first liquid outlet pipe 46.

[0029] The bottom of the swing jaw plate 221 is provided with a powder outlet chamber 47, which is located between the powder chamber 223 and the powder spraying hole 224. The powder outlet chamber 47 is connected to the first air outlet pipe 44. A valve diaphragm (not shown) is provided between the powder chamber 223 and the powder outlet chamber 47. The bottom of the swing jaw plate 221 is provided with a liquid outlet chamber 48, which is connected to the first liquid outlet pipe 46. A liquid outlet nozzle 49 connected to the liquid outlet chamber 48 is provided on the swing jaw plate 221.

[0030] When the drive assembly 3 is working, the reciprocating motion of the piston rod 3228 within the sleeve 3227 synchronously regulates the supply of gas and liquid media. When the piston rod 3228 moves upward toward the first chamber 41, the volume of the first chamber 41 decreases, the internal gas is compressed, and the pressure increases, causing the second one-way valve to open. This forms a high-pressure pulse airflow that is injected into the powder outlet chamber 47 at the bottom of the swing jaw plate 221 through the first outlet pipe 44. This airflow forcefully compresses the valve diaphragm to close the connection between the powder chamber 223 and the powder outlet chamber 47, preventing backflow of fly ash from the powder outlet chamber 47. On the other hand, it drives the fly ash pre-stored in the powder outlet chamber 47 to be ejected at high speed from the spray nozzle 224. Simultaneously, the upward movement of the piston rod 3228 increases the volume of the second chamber 42, creating a negative pressure. Under the action of the pressure difference, the third one-way valve opens. External liquid additives (such as sodium sulfate solution) are drawn into the second chamber 42 for storage through the first inlet pipe 45. Then, when the piston column 3228 moves downward in the opposite direction, the volume of the first chamber 41 increases, generating negative pressure. Air is drawn in through the first air inlet pipe 43 to prepare for the next cycle, while the volume of the second chamber 42 decreases, and the liquid stored inside is pressurized. The pressure causes the fourth one-way valve to open, and the high-pressure liquid is pumped to the outlet chamber 48 through the first outlet pipe 46, and finally atomized and sprayed out from the outlet nozzle 49. In the whole process, the piston column 3228 completes the two stages of powder spraying-liquid suction and air suction-liquid spraying in one complete reciprocating stroke, realizing the time-coordinated addition of fly ash dry powder and liquid additives based on the same power source. Moreover, the spraying power comes from the mechanical energy of the equipment itself and does not require external power.

[0031] It should be noted that after concrete is broken, its newly formed cross-section exposes a large number of unhydrated cement particles, hydration products (such as calcium hydroxide), and active silica-alumina components. At this time, the sodium sulfate solution sprayed simultaneously can immediately react chemically with these exposed active substances and the sprayed fly ash. On the one hand, it rapidly activates the pozzolanic activity of the fly ash, enabling it to generate hydrated calcium silicate gel with cementitious properties more efficiently. On the other hand, it reacts with cement hydration products to generate ettringite. The co-deposition and interweaving of these two reaction products can form a dense and high-strength composite modified shell layer on the surface of recycled aggregate and inside microcracks. This not only significantly improves the mechanical strength and density of the recycled aggregate itself and reduces its water absorption rate, but more importantly, it fundamentally strengthens the interfacial transition zone between the recycled aggregate and the subsequent fresh cement paste, thereby greatly improving the durability, impermeability, and long-term performance stability of the final recycled concrete product.

[0032] In a preferred embodiment, the drive unit 31 includes a motor 5, the output shaft of the motor 5 is connected to a drive pulley, and a first belt is tensioned between the drive pulley and the first pulley 324; a driven pulley 6 is coaxially fixedly connected to the crushing roller 23, and a second belt is tensioned between the driven pulley 6 and the second pulley 325.

[0033] After the motor 5 starts, the output shaft of the motor 5 drives the drive pulley to rotate, and transmits power to the first pulley 324 through the first belt, thereby driving the corresponding rotating shaft 323 in the conversion component 32 to rotate. This is the starting point of the power transmission of the entire system. The rotation of the rotating shaft 323 is converted into the reciprocating linear motion of the piston rod 3228 to generate jetting power through internal mechanisms such as the connecting rod 3225 and the eccentric rod 3224. On the other hand, it drives the swing jaw plate 221 to reciprocate through the pusher 33. At the same time, the second pulley 325, which is coaxial with the rotating shaft 323 (or through another rotating shaft 323 in the fixed cylinder 321), also rotates synchronously and transmits power to the crushing roller through the second belt. The driven pulley 6 on 23 drives the crushing roller 23 to rotate continuously in one direction. Finally, the single rotational power output by the motor 5 is synchronously divided into two key actions through this integrated belt drive system: one is the intermittent crushing power that drives the swing jaw plate 221 to swing back and forth, and the other is the continuous crushing and conveying power that drives the crushing roller 23 to rotate continuously. This allows the swing jaw plate 221 and the crushing roller 23 to work together to crush materials efficiently. All these mechanical movements (swinging of the swing jaw plate 221, piston movement, and rotation of the crushing roller 23) strictly maintain a synchronous and fixed phase relationship, ensuring the coordination and reliable linkage of the composite processes such as crushing, powder spraying, and liquid spraying under high-speed operation. The complex process that traditionally requires multiple independent drive sources is integrated into a single power system with synchronous and phase-locked operation. This not only greatly simplifies the structure but also ensures the correlation between the crushing action, the powder injection pulse, and the roller rotation. At the moment when the swing jaw plate 221 squeezes the material with maximum force and the new surface area bursts, it compresses and forms a high-pressure airflow, which accurately sprays the fly ash onto the crushing focus. At the same time, the rotating crusher 7 further disperses the material to expand the mixing interface, transforming the modification effect from probabilistic mixing into deterministic coating and improving the process effect.

[0034] In a preferred embodiment, a groove is formed on the crushing roller 23, and a plurality of crushing hammers 7 are hinged in the groove. Teeth are formed on the side of the swing jaw plate 221 near the crushing roller 23. When the swing jaw plate 221 swings toward the continuously rotating crushing roller 23 under the drive of the drive assembly 3, the hard teeth on the working surface of the swing jaw plate 221 first split and crush the concrete block entering the crushing box 21, producing large initial cracks and fragments. At the same time, the crushing hammer 7 on the rotating crushing roller 23 is thrown out radially under the action of centrifugal force. The hinged design allows it to buffer and swing back when it hits hard materials. It uses the high-energy impact and hammering action to perform secondary crushing of the material initially crushed by the swing jaw plate 221. The hinged structure of the crushing hammer 7 in the groove allows it to retract when passing through the narrow gap near the swing jaw plate 221 or encountering uncrushable objects, providing a certain overload protection capability. The combination of the fixed jaw extrusion of the teeth and the moving roller impact of the crushing hammer 7 can efficiently process concrete blocks with complex composition and uneven strength. The multi-directional intense collision and material tumbling generated create an excellent dispersion and hybrid dynamic environment for the synchronously injected fly ash and liquid additives, realizing the improvement of crushing efficiency and material modification effect.

[0035] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A fly ash preparation device for co-processing construction waste, characterized in that... ,include: The machine includes a frame (1), a crushing assembly (2), and a drive assembly (3), wherein the crushing assembly (2) and the drive assembly (3) are fixedly mounted on the frame (1); The crushing assembly (2) includes a crushing box (21), a movable jaw (22), and at least one crushing roller (23) disposed within the crushing box (21). The movable jaw (22) is oscillatingly disposed within the crushing box (21) and connected to the driving assembly (3). The driving assembly (3) is used to drive the movable jaw (22) to move closer to or away from the crushing roller (23) to cooperate in crushing materials. The movable jaw (22) includes a swing jaw plate (221) and a cover (222). The swing jaw plate (221) defines a powder cavity (223) for containing fly ash. At least one powder injection hole (224) communicating with the powder cavity (223) is provided on the working surface of the swing jaw plate (221). The drive assembly (3) is configured to simultaneously cause the fly ash contained in the powder chamber (223) to be released into the crushing box (21) through the powder injection hole (224) during the process of driving the swing jaw plate (221) to swing toward the crushing roller (23) to perform the crushing operation.

2. The fly ash preparation equipment for co-processing construction waste according to claim 1, characterized in that... The drive assembly (3) includes a drive member (31), a conversion member (32) and a pusher member (33). The conversion member (32) is mounted on the frame (1). The drive member (31) is connected to the conversion member (32). The conversion member (32) is connected to the pusher member (33). The pusher member (33) is connected to the moving jaw member (22).

3. The fly ash preparation equipment for co-processing construction waste according to claim 2, characterized in that... The conversion component (32) includes two fixed cylinders (321) and a pneumatic component (322) disposed between the two fixed cylinders (321), and the two fixed cylinders (321) are fixedly mounted on the frame (1); Both of the fixed cylinders (321) are rotatably equipped with a rotating shaft (323), and the ends of the two rotating shafts (323) that are far apart from each other are respectively connected to a first pulley (324) and a second pulley (325); The pneumatic component (322) includes a base plate frame (3221) and two gear rings (3222) fixedly mounted on the base plate frame (3221). Each gear ring (3222) is fixedly connected to a corresponding fixed cylinder (321). Each gear ring (3222) is provided with a gear (3223). An eccentric rod (3224) is connected between the two gears (3223). Two connecting rods (3225) are connected to both ends of the eccentric rod (3224). The two connecting rods (3225) are respectively connected to the two rotating shafts (323). A hinge rod (3226) is sleeved in the middle of the eccentric rod (3224). A sleeve (3227) is fixedly installed at the bottom of the seat frame (3221). A piston column (3228) is slidably connected inside the sleeve (3227). A push rod (3229) is fixedly installed on the piston column (3228). Both ends of the push rod (3229) completely penetrate the piston column (3228). The bottom end of the hinge rod (3226) is hinged to the top end of the push rod (3229).

4. The fly ash preparation equipment for co-processing construction waste according to claim 3, characterized in that... The pusher (33) includes a push seat (331) and a movable rod (332). The bottom of the push rod (3229) passes through the sleeve (3227) and is fixedly connected to the push seat (331). One end of the movable rod (332) is hinged to the push seat (331), and the other end of the movable rod (332) is hinged to the swing jaw plate (221). A pull rod (333) is hinged to the bottom of the swing jaw plate (221). The pull rod (333) is slidably mounted on the frame (1). A spring (334) is sleeved on the pull rod (333). The spring (334) has a tendency to drive the swing jaw plate (221) away from the crushing roller (23) through the pull rod (333).

5. The fly ash preparation equipment for co-processing construction waste according to claim 4, characterized in that... The piston rod (3228) divides the sleeve (3227) into a first chamber (41) and a second chamber (42). The first chamber (41) is connected to a first air inlet pipe (43) and a first air outlet pipe (44). A first one-way valve is provided at the first air inlet pipe (43), and a second one-way valve is provided at the first air outlet pipe (44). The second chamber (42) is connected to a first inlet pipe (45) and a first outlet pipe (46). A third check valve is provided at the first inlet pipe (45), and a fourth check valve is provided at the first outlet pipe (46).

6. The fly ash preparation equipment for co-processing construction waste according to claim 5, characterized in that... The bottom of the swing jaw plate (221) is provided with a powder outlet cavity (47), which is located between the powder cavity (223) and the powder spraying hole (224). The powder outlet cavity (47) is connected to the first air outlet pipe (44). A valve diaphragm is provided between the powder chamber (223) and the powder outlet chamber (47).

7. The fly ash preparation equipment for co-processing construction waste according to claim 6, characterized in that... The bottom of the swing jaw plate (221) is provided with a liquid outlet chamber (48), which is connected to the first liquid outlet pipe (46). The swing jaw plate (221) is provided with a liquid outlet nozzle (49) that is connected to the liquid outlet chamber (48).

8. The fly ash preparation equipment for co-processing construction waste according to claim 7, characterized in that... The driving component (31) includes a motor (5), the output shaft of which is connected to a drive pulley, and a first belt is tensioned between the drive pulley and the first pulley (324). A driven pulley (6) is coaxially fixedly connected to the crushing roller (23), and a second belt is tensioned between the driven pulley (6) and the second pulley (325).

9. The fly ash preparation equipment for co-processing construction waste according to claim 8, characterized in that... The crushing roller (23) has a groove formed therein, and several crushing hammers (7) are hinged in the groove.

10. The fly ash preparation equipment for co-processing construction waste according to claim 4, characterized in that... The oscillating jaw plate (221) has teeth formed on the side near the crushing roller (23).

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