Preparation device of fly ash-based geopolymer regenerated roadbed

Abstract

The invention relates to a preparation device for a fly ash-based polymer regenerated roadbed, and aims to solve the technical problem of low preparation efficiency of the current fly ash-based polymer regenerated roadbed. The preparation device comprises a base, an impact crusher is arranged at the top end of the base, a feeding box is arranged at the top end of the impact crusher, and fly ash raw materials are fed from the feeding box; the method comprises the following steps: crushing fly ash to a required particle size range, putting the fly ash into a screening mechanism through a connecting box, screening the crushed fly ash, removing oversized or undersized particles, ensuring the particle size uniformity of the fly ash, mixing and stirring the pretreated fly ash and an exciting agent through a mixing and stirring mechanism, and enabling the fly ash and the exciting agent to fully react to form a geopolymer. Finally, the geopolymer material is made into a regenerated roadbed material through the extrusion forming mechanism, the regenerated roadbed material is output through the belt conveyor, fly ash is converted into the high-performance geopolymer material, the preparation efficiency is greatly improved, and powerful support is provided for construction of a regenerated roadbed.

Description

Technical Field

[0001] The invention relates to the technical field of geopolymers, and in particular to a preparation device for a fly ash-based polymer regenerated roadbed. Background Art

[0002] With the expansion of urbanization, the amount of urban domestic waste has increased dramatically. Incineration has become the most common way of treatment, but the fly ash produced by incineration has become a problem that needs to be solved urgently. Waste incineration not only produces organic pollutants and toxic gases such as dioxins, carbides, nitrides and sulfides, but also produces solid residues such as combustion fly ash, slag, and waste heat boiler ash. Fly ash is tiny ash particles discharged during the combustion of fuel (mainly coal). Fly ash is a solid waste generated in certain industrial processes, usually containing a variety of chemical components. Geopolymer is a new type of inorganic gelling material that can convert various solid wastes into building materials with excellent performance through specific chemical reactions.

[0003] In recent years, the treatment and disposal of fly ash has tended to be resource-based. Geopolymers are used to treat fly ash. Through alkali excitation, geopolymers can generate a three-dimensional network of zeolite-like cage-like structures to solidify heavy metal ions in the structure. However, most cases are limited to studying the solidification effect of geopolymers on fly ash. Few cases explore fly ash as a raw material to prepare geopolymers and use them in regenerated roadbeds. For example, the Chinese invention patent with publication number CN116003009A discloses a fly ash-based polymer for roadbed improvement layer and its preparation method. However, the preparation method currently lacks an efficient preparation device to realize the preparation of fly ash-based polymer regenerated roadbed in the system, and cannot meet the large-scale demand in roadbed filling.

[0004] And because part of the fly ash is spherical, with smooth surface and small micropores, the other part collides with each other in the molten state and sticks together, becoming honeycomb-shaped composite particles with rough surface and more edges and corners. This makes the preparation method have low curing efficiency and poor curing effect, resulting in incomplete curing of fly ash, resulting in low production capacity of geopolymer used in roadbed, and unable to meet the large demand for roadbed filling. Therefore, how to design a preparation device for fly ash-based polymer regenerated roadbed for regenerated roadbed filling is particularly important; in view of this, we propose a preparation device for fly ash-based polymer regenerated roadbed. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, meet actual needs, and provide a preparation device for a fly ash-based polymer regenerated roadbed to solve the technical problem of low preparation efficiency of the current fly ash-based polymer regenerated roadbed.

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is: designing a preparation device for a fly ash-based polymer regenerated roadbed, including a base, a support column is provided on the base, an impact crusher is provided at the top of the support column, a feeding box is provided at the top of the impact crusher, a connecting box is provided at the bottom of the impact crusher, a screening mechanism is provided at one end of the base away from the support column, the input end of the screening mechanism is connected to the bottom of the connecting box, a mixing and stirring mechanism is provided at a position on the base relative to the bottom of the screening mechanism, a belt conveyor is provided on one side of the base, an extrusion molding mechanism is provided at the top of the belt conveyor, and the output end of the mixing and stirring mechanism is connected to the input end of the extrusion molding mechanism.

[0007] Preferably, the screening mechanism includes a screening shell, a feed port, a vibration motor, a discharge port, a screening assembly and a buffer base, the buffer base is arranged at one end of the base away from the support column, the screening shell is arranged at the top of the buffer base, the feed port is opened at the top of the screening shell, the feed port is connected to the output end of the connecting box, the vibration motor is arranged at the top of the screening shell, the discharge port is arranged on one side of the screening shell, and the screening assembly is arranged inside the screening shell.

[0008] Preferably, the buffer base includes a mounting plate, a first spring and a connecting frame, several of the mounting plates are arranged at one end of the base away from the support column, the first spring is connected to the top of the mounting plate, the connecting frame is connected to the top of the first spring, and the screening shell is arranged at the top of the connecting frame.

[0009] Preferably, the screening assembly includes a screen plate member, a driving member and a reducing member, the screen plate member is connected to the inside of the screening shell, one end of the driving member is connected to the inside of the screen plate member, and the other end of the driving member is connected to the screening shell, a plurality of reducing members are arranged inside the screen plate member, and the driving member is cooperatively connected to the reducing members.

[0010] Preferably, the screen plate component includes a screening top plate, a screening bottom plate and screening holes, the screening top plate is connected to the inside of the screening shell, the screening top plate and the discharge port are at the same horizontal height and are connected, the screening bottom plate is connected to the inside of the screening shell at a position relative to the bottom of the screening top plate, a number of the screening holes are linearly and evenly spaced on the screening top plate and the screening bottom plate, a number of the reducing members are arranged between the screening top plate and the screening bottom plate relative to the screening holes, and the driving member is arranged between the screening top plate and the screening bottom plate relative to the reducing member.

[0011] Preferably, the driving member includes a cylinder, a connecting rod, a slide barrel, a sliding rod and a tooth groove, the cylinder is connected to the side of the screening shell away from the discharge port, the connecting rod is connected to the output end of the cylinder, a plurality of slide barrels are symmetrically arranged at the end of the screening bottom plate, one end of the slide barrel is movably inserted into the slide barrel, the other end of the slide barrel is connected to the connecting rod, the tooth groove is opened on the slide rod, and the tooth groove is matched with the reducer.

[0012] Preferably, the diameter-changing member includes a bottom ring, ring teeth, a curved groove, a positioning rod, a rotating blade, a moving rod, micropores, a top ring and a positioning hole. The bottom ring is arranged on the screening bottom plate at a position relative to the screening hole. The ring teeth are opened on the outer wall of the bottom ring. The curved grooves are opened on the bottom ring in a circular shape with equal intervals. The positioning rods are opened on the bottom ring in a circular shape with equal intervals. The rotating blade is rotatably connected to the positioning rod. The moving rod is inserted on the rotating blade. The bottom end of the moving rod is movably inserted in the curved groove. A number of micropores are opened on the rotating blade. The top ring is connected to the top end of the moving rod. The positioning holes are opened on the top ring in a circular shape with equal intervals. The top end of the moving rod is inserted in the positioning hole.

[0013] Preferably, the extrusion molding mechanism includes a mounting frame, a lower hopper, a reduction motor, a gear set, a molding roller and an elastic sparse component. The mounting frame is connected to the top of the belt conveyor, the lower hopper is arranged at the top of the mounting frame, the input end of the lower hopper is connected to the output end of the mixing and stirring mechanism, the reduction motor is connected to the back of the mounting frame, the molding roller is arranged inside the mounting frame and connected to the output end of the reduction motor, the gear set is arranged on the front of the mounting frame and connected to the molding roller, and the elastic sparse component is arranged at a position on the top of the mounting frame opposite to the side of the lower hopper.

[0014] Preferably, the elastic dredging assembly includes a support plate, a penetration shaft, a second spring, a rack, a dredging bucket, a vertical plate, a limiting groove, a toothed wheel shaft, a missing gear and a limiting rod, the support plate is arranged on the end of the mounting frame away from the lower hopper, the penetration shaft is movably penetrated on the support plate, the second spring is sleeved on the penetration shaft, the rack is arranged on the penetration shaft, the dredging bucket is connected to the end of the penetration shaft away from the support plate, the vertical plate is symmetrically arranged on the mounting frame at a position relative to the top of the forming roller, the limiting groove is opened on the vertical plate, the toothed wheel shaft is penetrated on the mounting frame, the outer end of the toothed wheel shaft is meshedly connected to the gear set, the missing gear is sleeved on the toothed wheel shaft, the missing gear is meshedly connected to the bottom end of the rack, and the limiting rod is symmetrically arranged at the end of the dredging bucket and slidably inserted in the limiting groove.

[0015] A method for preparing a fly ash-based polymer regeneration roadbed preparation device comprises the following steps: S1, crushing operation; First, the fly ash raw materials to be processed are put into the feed box, and the impact crusher crushes the fly ash into the required particle size range, and then put it into the screening mechanism through the connecting box; S2, screening operation; S201. When it is necessary to screen fly ash particles with larger particle sizes, the cylinder stroke action is first used to drive the connecting rod to move, and the connecting rod drives several sliding rods to move on the slide cylinder. The tooth grooves on the sliding rod are engaged with the ring teeth to drive the bottom ring to rotate in one direction. The rotating blades are connected to the positioning rods. At this time, the moving rods connected to the rotating blades slide on the curved grooves, and the top ring and the positioning holes at the top are limited, so that several rotating blades are in an open state. Then, the vibrating motor drives the screening assembly to vibrate, which is used to pass fly ash particles with large particle sizes. S202, when it is necessary to screen the fly ash particles with smaller particle size, firstly, the cylinder return action is used to drive the connecting rod to move, and the connecting rod drives several sliding rods to move on the slide cylinder, and the tooth grooves on the sliding rod are engaged with the ring teeth to drive the bottom ring to rotate in another direction, and the rotating blades are connected to the positioning rod. At this time, the moving rod connected to the rotating blade slides on the curved groove, and the top ring and the positioning hole at the top are limited, so that several rotating blades are in a closed state, and then the screening assembly is driven to vibrate by the vibration motor, and the micropores on the rotating blades are used to pass the fly ash particles with small particle size; S203, when it is necessary to cut and separate the fly ash stuck in the molten state, firstly, the cylinder is used to reciprocate and return to drive the connecting rod to move, and the connecting rod drives a number of sliding rods to move on the slide cylinder, and the tooth grooves on the sliding rod are engaged with the ring teeth to drive the bottom ring to reciprocate, and the rotating blades are connected to the positioning rods, and the moving rods connected to the rotating blades slide on the curved grooves, and the top ring and the positioning holes at the top are limited, so that a number of rotating blades can quickly switch between the open and closed states, and then the vibrating motor drives the screening assembly to vibrate to achieve separation of the sticking fly ash; S3, mixing and stirring operation; The pretreated fly ash particles enter the mixing and stirring mechanism through the output end of the screening mechanism, and the activator is injected into the mixing and stirring mechanism. The pretreated fly ash and the activator are mixed and stirred by the mixing and stirring mechanism, so that the fly ash and the activator fully react to form a geopolymer; S4, forming operation; The geopolymer is introduced into the space between two forming rollers through the lower hopper, and the geopolymer material is formed into the shape required for the roadbed through the reduction motor and gear set; S5. Maintenance operation; When the local polymer is blocked or unevenly discharged during the molding process, the gear set is driven to rotate by the reduction motor, the gear set drives the toothed shaft to rotate, the toothed shaft drives the missing gear to rotate, the missing gear is engaged with the rack so that the piercing shaft squeezes the second spring, the missing gear rotates to the end without teeth, the piercing shaft releases the dredging bucket quickly due to the elastic force of the second spring, and the limiting rod on the dredging bucket is slidably inserted in the limiting groove of the vertical plate, so that the dredging bucket forms a dredging with greater impact force along the periphery of the molding roller.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention improves the existing method for preparing fly ash-based polymer regenerated roadbed by arranging an impact crusher on the top of a base, arranging a feed box on the top of the impact crusher, feeding fly ash raw materials from the feed box, crushing the fly ash to a required particle size range, and then feeding the fly ash into a screening mechanism through a connecting box, screening the crushed fly ash, removing oversized or undersized particles, and ensuring the particle size uniformity of the fly ash, and then mixing and stirring the pretreated fly ash with an activator through a mixing and stirring mechanism, so that the fly ash and the activator fully react to form a geopolymer, and finally making the geopolymer material into a regenerated roadbed material through an extrusion molding mechanism, and outputting it through a belt conveyor. The present invention converts fly ash into high-performance geopolymer material, greatly improves the preparation efficiency, and provides strong support for the construction of regenerated roadbed.

[0017] 2. The present invention arranges a buffer base at one end of the base away from the support column, arranges a screening shell on the buffer base, opens a feed port at the top of the screening shell for feeding, and further provides a vibration motor for vibration screening. A discharge port is provided on one side of the screening shell for discharging fly ash that does not meet the particle size. The vibration motor drives the screening assembly to vibrate and screen the fly ash. The screening process can remove oversized or undersized particles and ensure the uniformity of the particle size of the fly ash, which helps to optimize the physical and chemical properties of geopolymers and improve the strength and stability of the roadbed.

[0018] 3. The present invention arranges a sieve plate inside the screening shell, connects a driving member to the sieve plate, and arranges a diameter-changing member inside the sieve plate. This allows the driving member to drive the diameter-changing member to change the aperture inside the sieve plate, thereby adapting to the screening needs of fly ash of different particle sizes. In the preparation process of fly ash-based polymers, the particle size of fly ash has an important influence on the performance of the final product. By adjusting the aperture, the particle size distribution of fly ash can be accurately controlled, thereby ensuring that the quality and performance of the geopolymer reach a better state.

[0019] 4. The present invention arranges a cylinder on the screening shell, the cylinder drives the connecting rod to move, the connecting rod drives a plurality of sliding rods to move on the slide cylinder, and the tooth grooves on the sliding rod cooperate with the reducing piece so that the reducing piece can quickly adjust the aperture. In actual production, the aperture can be quickly adjusted according to specific needs to adapt to fly ash from different batches and sources, which helps to reduce production costs, improve production efficiency, and meet the needs of different customers.

[0020] 5. The present invention arranges a bottom ring on the screening bottom plate at a position relative to the screening hole, and an annular tooth is provided on the outer side of the bottom ring. When the cylinder drives the connecting rod to move, the connecting rod drives a plurality of sliding rods to move on the sliding cylinder, and the tooth grooves on the sliding rods mesh with the annular teeth to drive the bottom ring to rotate. The bottom ring is provided with a curved groove and a positioning rod, and the rotating blades are rotatably connected to the positioning rod, and the moving rods connected to the rotating blades slide on the curved grooves, and the top ring and the positioning holes at the top are limited, so that the diameter reducer has three usage states. When a plurality of rotating blades are in an open state, they are used to pass fly ash particles with large particle sizes. When a plurality of rotating blades are in a closed state, the micropores on the rotating blades are used to pass fly ash particles with small particle sizes. When a plurality of rotating blades are quickly switched between the open and closed states, the honeycomb-shaped combined fly ash particles that collide with each other and adhere to each other in a molten state and have a rough surface and many edges and corners are cut and separated, so that each fly ash particle can be fully utilized, which helps to reduce resource waste and improve the utilization rate of fly ash.

[0021] 6. The present invention arranges a support plate at one end of the mounting frame away from the lower hopper, and movably inserts a penetration shaft on the support plate, a second spring is sleeved on the penetration shaft, a rack is provided on the penetration shaft, and a dredging bucket is provided at the end of the penetration shaft located at the position of the forming roller. When the reduction motor drives the gear set to rotate, the gear set drives the toothed wheel shaft to rotate, and the toothed wheel shaft drives the missing gear to rotate. The missing gear is meshed with the rack so that the penetration shaft squeezes the second spring. When the missing gear rotates to the end without teeth, the dredging bucket is quickly released due to the elastic force of the second spring. Since the limit rod on the dredging bucket is slidably inserted in the limit groove of the vertical plate, the dredging bucket forms a dredging with a large impact force along the periphery of the forming roller, which can quickly and effectively clear the blockage in the forming process of the geopolymer material, thereby greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a schematic diagram of the overall back structure of the present invention; Figure 3 It is a front view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the top surface structure of the screening mechanism in the present invention; Figure 5 It is a schematic diagram of the bottom structure of the screening mechanism in the present invention; Figure 6 It is a schematic diagram of the structure of the screening component in the present invention; Figure 7 It is a schematic diagram of the structure of the screen plate member, the driving member and the diameter reducing member in the present invention; Figure 8 It is a schematic diagram of the split structure of the driving part and the reducing part in the present invention; Fig. 9 It is a schematic diagram of the structure of the reducer in one state of the present invention; Fig.10 It is a schematic diagram of the structure of the reducer in another state of the present invention; Fig.11 It is a schematic diagram of the structure of the belt conveyor and the extrusion molding mechanism in the present invention; Fig.12 This is a schematic diagram of the structure of the bullet-removing component in the present invention; In the figure: 1. base; 2. support column; 3. impact crusher; 4. feed box; 5. connection box; 6. screening mechanism; 7. mixing mechanism; 8. belt conveyor; 9. extrusion molding mechanism; 601, screening shell; 602, feed port; 603, vibration motor; 604, discharge port; 605, screening assembly; 606, buffer base; 607, screen plate; 608, driving member; 609, reducing member; 901, mounting frame; 902, lower hopper; 903, reduction motor; 904, gear set; 905, forming roller; 906, spring-sparse assembly; 6061, mounting plate; 6062, first spring; 6063, connecting frame; 6071, screening top plate; 6072, screening bottom plate; 6073, screening hole; 6081, cylinder; 6082, connecting rod; 6083, slide cylinder; 6084, slide rod; 6085, tooth groove; 6091, bottom ring; 6092, ring teeth; 6093, curved groove; 6094, positioning rod; 6095, rotating blade; 6096, moving rod; 6097, micro hole; 6098, top ring; 6099, positioning hole; 9061. Support plate; 9062. Through-shaft; 9063. Second spring; 9064. Rack; 9065. Dredging bucket; 9066. Vertical plate; 9067. Limiting groove; 9068. Gear shaft; 9069. Missing gear; 9060. Limiting rod. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments: Example 1: A preparation device for fly ash-based polymer regeneration roadbed, see Figures 1 to 12, including a base 1, a supporting column 2 is provided on the base 1, an impact crusher 3 is provided on the top of the supporting column 2, a feeding box 4 is provided on the top of the impact crusher 3, a connecting box 5 is provided at the bottom of the impact crusher 3, a screening mechanism 6 is provided at the end of the base 1 away from the supporting column 2, the input end of the screening mechanism 6 is connected to the bottom of the connecting box 5, a mixing mechanism 7 is provided on the base 1 at a position opposite to the bottom of the screening mechanism 6, a belt conveyor 8 is provided on one side of the base 1, an extrusion molding mechanism 9 is provided on the top of the belt conveyor 8, and the output end of the mixing mechanism 7 is connected to the input end of the extrusion molding mechanism 9. The present invention improves the existing method for preparing a fly ash-based polymer regenerated roadbed. An impact crusher 3 is arranged at the top of a base 1, a feed box 4 is arranged at the top of the impact crusher 3, fly ash raw materials are fed from the feed box 4, the fly ash is crushed to a required particle size range, and then fed into a screening mechanism 6 through a connecting box 5, the crushed fly ash is screened, and oversized or undersized particles are removed to ensure the particle size uniformity of the fly ash, and then the pretreated fly ash is mixed and stirred with an activator through a mixing and stirring mechanism 7, so that the fly ash and the activator fully react to form a geopolymer, and finally the geopolymer material is made into a regenerated roadbed material through an extrusion molding mechanism 9, and output through a belt conveyor 8. The present invention converts fly ash into high-performance geopolymer material, greatly improves the preparation efficiency, and provides strong support for the construction of a regenerated roadbed.

[0024] Specifically, the screening mechanism 6 includes a screening shell 601, a feed port 602, a vibration motor 603, a discharge port 604, a screening component 605 and a buffer base 606. The buffer base 606 is arranged at the end of the base 1 away from the support column 2. The screening shell 601 is arranged at the top of the buffer base 606. The feed port 602 is opened at the top of the screening shell 601. The feed port 602 is connected to the output end of the connecting box 5. The vibration motor 603 is arranged at the top of the screening shell 601. The discharge port 604 is arranged on one side of the screening shell 601, and the screening component 605 is arranged inside the screening shell 601. The present invention arranges a buffer base 606 at one end of the base 1 away from the support column 2, arranges a screening shell 601 on the buffer base 606, opens a feed port 602 at the top of the screening shell 601 for feeding, and further provides a vibration motor 603 for vibration screening. A discharge port 604 is provided on one side of the screening shell 601 for discharging fly ash that does not meet the particle size. The vibration motor 603 drives the screening component 605 to vibrate to screen the fly ash. The screening process can remove oversized or undersized particles to ensure the uniformity of the particle size of the fly ash, which helps to optimize the physical and chemical properties of geopolymers and improve the strength and stability of the roadbed.

[0025] Further, the buffer base 606 includes a mounting plate 6061, a first spring 6062 and a connecting frame 6063, a plurality of mounting plates 6061 are arranged at one end of the base 1 away from the support column 2, the first spring 6062 is connected to the top of the mounting plate 6061, the connecting frame 6063 is connected to the top of the first spring 6062, and the screening housing 601 is arranged at the top of the connecting frame 6063. The present invention arranges the mounting plate 6061 at one end of the base 1 away from the support column 2, arranges the first spring 6062 on the mounting plate 6061, arranges the connecting frame 6063 at the top of the first spring 6062, and arranges the screening housing 601 at the top of the connecting frame 6063. The screening housing 601 generates strong vibrations to make the fly ash pass quickly on the screening assembly 605, thereby realizing efficient screening. The buffer base 606 can effectively absorb and disperse the vibration energy generated by the screening assembly 605, reduce the impact of the vibration on the device itself and the surrounding environment, which helps to extend the service life of the device and improve the stability of the device.

[0026] Furthermore, the screening assembly 605 includes a screen plate member 607, a driving member 608 and a reducing member 609. The screen plate member 607 is connected to the interior of the screening shell 601, one end of the driving member 608 is connected to the interior of the screen plate member 607, and the other end of the driving member 608 is connected to the screening shell 601. A plurality of reducing members 609 are arranged inside the screen plate member 607, and the driving member 608 is connected to the reducing member 609 in a cooperative manner. The present invention arranges a sieve plate member 607 inside the screening shell 601, connects a driving member 608 to the sieve plate member 607, and arranges a diameter-changing member 609 inside the sieve plate member 607, so that the driving member 608 drives the diameter-changing member 609 to change the aperture inside the sieve plate member 607, thereby adapting to the screening requirements of fly ash of different particle sizes. In the preparation process of fly ash-based polymer, the particle size of fly ash has an important influence on the performance of the final product. By adjusting the aperture, the particle size distribution of fly ash can be accurately controlled, thereby ensuring that the quality and performance of the geopolymer reach a better state.

[0027] It is worth mentioning that the screen plate member 607 includes a screening top plate 6071, a screening bottom plate 6072 and screening holes 6073. The screening top plate 6071 is connected to the inside of the screening shell 601. The screening top plate 6071 and the discharge port 604 are at the same horizontal height and are connected. The screening bottom plate 6072 is connected to the inside of the screening shell 601 at a position relative to the bottom of the screening top plate 6071. A number of screening holes 6073 are linearly and evenly spaced on the screening top plate 6071 and the screening bottom plate 6072. A number of reducers 609 are arranged between the screening top plate 6071 and the screening bottom plate 6072 at a position relative to the screening holes 6073. The driving member 608 is arranged between the screening top plate 6071 and the screening bottom plate 6072 at a position relative to the reducer 609. The present invention arranges a screening top plate 6071 and a screening bottom plate 6072 inside the screening shell 601 and opens screening holes 6073 on the screening top plate 6071 and the screening bottom plate 6072 for matching with a reducer 609. When processing coarser or finer fly ash, the clogging phenomenon on the screen can be reduced by adjusting the aperture through the reducer 609, thereby increasing the screening speed and the pass rate, which can not only save time but also improve the efficiency of the entire preparation process.

[0028] It is worth noting that the driving member 608 includes a cylinder 6081, a connecting rod 6082, a slide 6083, a sliding rod 6084 and a tooth groove 6085. The cylinder 6081 is connected to the side of the screening shell 601 away from the discharge port 604, the connecting rod 6082 is connected to the output end of the cylinder 6081, a number of slides 6083 are symmetrically arranged at the end of the screening bottom plate 6072, one end of the sliding rod 6084 is movably inserted into the slide 6083, and the other end of the sliding rod 6084 is connected to the connecting rod 6082. The tooth groove 6085 is opened on the sliding rod 6084, and the tooth groove 6085 is connected to the reducer 609. The present invention arranges a cylinder 6081 on the screening shell 601, and the cylinder 6081 drives the connecting rod 6082 to move. The connecting rod 6082 drives a plurality of sliding rods 6084 to move on the slide tube 6083. The tooth grooves 6085 on the sliding rod 6084 cooperate with the reducer 609 so that the reducer 609 can quickly adjust the aperture. In actual production, the aperture can be quickly adjusted according to specific needs to adapt to fly ash from different batches and sources, which helps to reduce production costs, improve production efficiency, and meet the needs of different customers.

[0029] It is worth mentioning that the reducer 609 includes a bottom ring 6091, a ring tooth 6092, a curved groove 6093, a positioning rod 6094, a rotating blade 6095, a moving rod 6096, a micropore 6097, a top ring 6098 and a positioning hole 6099. The bottom ring 6091 is arranged on the screening bottom plate 6072 at a position relative to the screening hole 6073, the ring tooth 6092 is arranged on the outer wall of the bottom ring 6091, the curved grooves 6093 are arranged on the bottom ring 6091 in an annular shape and at equal intervals, and the positioning rod 6094 is arranged in a Annular holes are opened on the bottom ring 6091 at equal intervals, the rotating blade 6095 is rotatably connected to the positioning rod 6094, the moving rod 6096 is inserted on the rotating blade 6095, and the bottom end of the moving rod 6096 is movably inserted in the curved groove 6093, a number of microholes 6097 are opened on the rotating blade 6095, the top ring 6098 is connected to the top end of the moving rod 6096, and the positioning holes 6099 are opened on the top ring 6098 at equal intervals in an annular shape, and the top end of the moving rod 6096 is inserted in the positioning holes 6099. The present invention arranges a bottom ring 6091 on the screening bottom plate 6072 at a position relative to the screening hole 6073, and provides a ring tooth 6092 on the outer side of the bottom ring 6091. When the cylinder 6081 drives the connecting rod 6082 to move, and the connecting rod 6082 drives a plurality of slide bars 6084 to move on the slide cylinder 6083, the tooth groove 6085 on the slide bar 6084 engages with the ring tooth 6092 to drive the bottom ring 6091 to rotate. The bottom ring 6091 is provided with a curved groove 6093 and a positioning rod 6094. The rotating blade 6095 is rotatably connected to the positioning rod 6094. The moving rod 6096 connected to the rotating blade 6095 slides on the curved groove 6093. The ring 6098 and the positioning hole 6099 are used to limit the position, so that the reducer 609 has three usage states. When several rotating blades 6095 are in an open state, they are used to pass large-sized fly ash particles. When several rotating blades 6095 are in a closed state, the micropores 6097 on the rotating blades 6095 are used to pass small-sized fly ash particles. When several rotating blades 6095 quickly switch between the open and closed states, the honeycomb-shaped combined fly ash particles with rough surfaces and many edges and corners that collide with each other and stick together in the molten state are cut and separated, so that every particle of fly ash can be fully utilized, which helps to reduce resource waste and improve the utilization rate of fly ash.

[0030] It is worth emphasizing that the extrusion molding mechanism 9 includes a mounting frame 901, a lower hopper 902, a reduction motor 903, a gear set 904, a molding roller 905 and a spring-drying component 906. The mounting frame 901 is connected to the top of the belt conveyor 8, the lower hopper 902 is arranged at the top of the mounting frame 901, the input end of the lower hopper 902 is connected to the output end of the mixing and stirring mechanism 7, the reduction motor 903 is connected to the back of the mounting frame 901, the molding roller 905 is arranged inside the mounting frame 901 and connected to the output end of the reduction motor 903, the gear set 904 is arranged on the front of the mounting frame 901 and connected to the molding roller 905, and the spring-drying component 906 is arranged at a position on the top of the mounting frame 901 opposite to the side of the lower hopper 902. The present invention arranges a mounting frame 901 at the top of the belt conveyor 8, and arranges a lower hopper 902 on the mounting frame 901 to receive the geopolymer after the mixing and stirring mechanism 7 has fully reacted, and introduces the geopolymer between two forming rollers 905 through the lower hopper 902, and forms the geopolymer material into the shape required for the roadbed through the reduction motor 903 and the gear set 904, so as to meet the engineering requirements of the regenerated roadbed, help improve construction efficiency, and reduce manufacturing costs.

[0031] In addition, the spring dredging assembly 906 includes a support plate 9061, a threading shaft 9062, a second spring 9063, a rack 9064, a dredging bucket 9065, a vertical plate 9066, a limiting groove 9067, a toothed shaft 9068, a missing gear 9069 and a limiting rod 9060. The support plate 9061 is arranged at the end of the mounting frame 901 away from the lower hopper 902, the threading shaft 9062 is movably threaded on the support plate 9061, the second spring 9063 is sleeved on the threading shaft 9062, the rack 9064 is arranged on the threading shaft 9062, and the dredging bucket 9065 is connected to the vertical plate 9066. Connected to the end of the through-axis 9062 away from the support plate 9061, the vertical plate 9066 is symmetrically arranged on the mounting frame 901 at a position above the forming roller 905, a limiting groove 9067 is opened on the vertical plate 9066, a gear shaft 9068 is passed through the mounting frame 901, and the outer end of the gear shaft 9068 is meshedly connected to the gear set 904, a missing gear 9069 is sleeved on the gear shaft 9068, and the missing gear 9069 is meshedly connected to the bottom end of the rack 9064, and a limiting rod 9060 is symmetrically arranged at the end of the dredging bucket 9065 and is slidably inserted in the limiting groove 9067. The present invention provides a support plate 9061 at one end of the mounting frame 901 away from the lower hopper 902, a through-shaft 9062 is movably inserted on the support plate 9061, a second spring 9063 is sleeved on the through-shaft 9062, a rack 9064 is provided on the through-shaft 9062, and a dredging bucket 9065 is provided at the end of the through-shaft 9062 located at the position of the forming roller 905. When the reduction motor 903 drives the gear set 904 to rotate, the gear set 904 drives the toothed wheel shaft 9068 to rotate, and the toothed wheel shaft 9068 drives the missing gear 9069 to rotate, and the missing gear 9069 and the gear The meshing of strip 9064 causes the penetration shaft 9062 to squeeze the second spring 9063. When the missing gear 9069 rotates to the end without teeth, the penetration shaft 9062 releases the unblocking bucket 9065 quickly due to the elastic force of the second spring 9063. Since the limiting rod 9060 on the unblocking bucket 9065 is slidably inserted in the limiting groove 9067 of the vertical plate 9066, the unblocking bucket 9065 forms an unblocking with a large impact force along the periphery of the forming roller 905, which can quickly and effectively clear the blockage in the process of forming the geopolymer material, thereby greatly improving the production efficiency.

[0032] Embodiment 2: A method for preparing a fly ash-based polymer regeneration roadbed preparation device, comprising the following steps: S1, crushing operation; First, the fly ash raw material to be processed is fed into the feed box 4, and the impact crusher 3 crushes the fly ash into the required particle size range, and then the fly ash is fed into the screening mechanism 6 through the connecting box 5; S2, screening operation; S201. When it is necessary to screen the fly ash particles with larger particle sizes, firstly, the stroke action of the cylinder 6081 is used to drive the connecting rod 6082 to move, and the connecting rod 6082 drives a plurality of slide bars 6084 to move on the slide tube 6083. The tooth groove 6085 on the slide bar 6084 engages with the ring tooth 6092 to drive the bottom ring 6091 to rotate in one direction, and the rotating blade 6095 is rotatably connected to the positioning rod 6094. At this time, the moving rod 6096 connected to the rotating blade 6095 slides on the curved groove 6093, and the top ring 6098 and the positioning hole 6099 at the top are limited, so that the plurality of rotating blades 6095 are in an open state, and then the screening assembly 605 is driven to vibrate by the vibration motor 603 to pass the fly ash particles with large particle sizes; S202, when it is necessary to screen the fly ash particles with smaller particle size, firstly, the return action of the cylinder 6081 is used to drive the connecting rod 6082 to move, and the connecting rod 6082 drives a plurality of sliding rods 6084 to move on the slide cylinder 6083, and the tooth groove 6085 on the sliding rod 6084 is engaged with the ring tooth 6092 to drive the bottom ring 6091 to rotate in another direction, and the rotating blade 6095 is rotatably connected to the positioning rod 6094. At this time, the moving rod 6096 connected to the rotating blade 6095 slides on the curved groove 6093, and the top ring 6098 and the positioning hole 6099 at the top are limited, so that the plurality of rotating blades 6095 are in a closed state, and then the screening assembly 605 is driven to vibrate by the vibration motor 603, and the micropores 6097 on the rotating blade 6095 are used to pass the fly ash particles with small particle size; S203, when it is necessary to cut and separate the fly ash stuck in the molten state, firstly, the cylinder 6081 is used to reciprocate and return to drive the connecting rod 6082 to move, and the connecting rod 6082 drives a plurality of sliding rods 6084 to move on the slide cylinder 6083, and the tooth groove 6085 on the sliding rod 6084 is engaged with the ring tooth 6092 to drive the bottom ring 6091 to reciprocate, and the rotating blade 6095 is rotatably connected to the positioning rod 6094, and the moving rod 6096 connected to the rotating blade 6095 slides on the curved groove 6093, and the top ring 6098 and the positioning hole 6099 at the top are limited, so that the plurality of rotating blades 6095 can quickly switch between the open and closed states, and then the screening assembly 605 is driven to vibrate by the vibration motor 603 to separate the stuck fly ash; S3, mixing and stirring operation; The pretreated fly ash particles enter the mixing and stirring mechanism 7 through the output end of the screening mechanism 6, and the activator is injected into the mixing and stirring mechanism 7. The pretreated fly ash and the activator are mixed and stirred by the mixing and stirring mechanism 7, so that the fly ash and the activator fully react to form a geopolymer; S4, forming operation; The geopolymer is introduced into the space between two forming rollers 905 through the lower hopper 902, and the geopolymer material is formed into the shape required for the roadbed through the reduction motor 903 and the gear set 904; S5. Maintenance operation; When the local polymer is blocked or unevenly discharged during the molding process, the gear set 904 is driven to rotate by the reduction motor 903, and the gear set 904 drives the toothed shaft 9068 to rotate, and the toothed shaft 9068 drives the missing gear 9069 to rotate. The missing gear 9069 is engaged with the rack 9064 so that the penetration shaft 9062 squeezes the second spring 9063, and the missing gear 9069 rotates to the end without teeth. The penetration shaft 9062 releases the dredging bucket 9065 quickly due to the elastic force of the second spring 9063. Since the limiting rod 9060 on the dredging bucket 9065 is slidably inserted in the limiting groove 9067 of the vertical plate 9066, the dredging bucket 9065 forms a dredging with a large impact force along the periphery of the molding roller 905.

[0033] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A preparation device for fly ash-based polymer regeneration roadbed, characterized in that: The invention comprises a base (1), wherein a support column (2) is provided on the base (1), an impact crusher (3) is provided at the top of the support column (2), a feed box (4) is provided at the top of the impact crusher (3), a connecting box (5) is provided at the bottom of the impact crusher (3), a screening mechanism (6) is provided at one end of the base (1) away from the support column (2), an input end of the screening mechanism (6) is connected to the bottom end of the connecting box (5), a mixing mechanism (7) is provided on the base (1) at a position relative to the bottom end of the screening mechanism (6), a belt conveyor (8) is provided on one side of the base (1), an extrusion molding mechanism (9) is provided at the top of the belt conveyor (8), and an output end of the mixing mechanism (7) is connected to an input end of the extrusion molding mechanism (9).

2. The preparation device for fly ash-based polymer regeneration roadbed according to claim 1, characterized in that: The screening mechanism (6) comprises a screening shell (601), a feed port (602), a vibration motor (603), a discharge port (604), a screening component (605) and a buffer base (606), wherein the buffer base (606) is arranged at an end of the base (1) away from the support column (2), the screening shell (601) is arranged at the top of the buffer base (606), the feed port (602) is opened at the top of the screening shell (601), the feed port (602) is connected to the output end of the connection box (5), the vibration motor (603) is arranged at the top of the screening shell (601), the discharge port (604) is arranged at one side of the screening shell (601), and the screening component (605) is arranged inside the screening shell (601).

3. The preparation device for fly ash-based polymer regeneration roadbed according to claim 2, characterized in that: The buffer base (606) comprises a mounting plate (6061), a first spring (6062) and a connecting frame (6063); a plurality of the mounting plates (6061) are arranged at one end of the base (1) away from the support column (2); the first spring (6062) is connected to the top of the mounting plate (6061); the connecting frame (6063) is connected to the top of the first spring (6062); and the screening shell (601) is arranged at the top of the connecting frame (6063).

4. The device for preparing fly ash-based polymer regenerated roadbed according to claim 3, characterized in that: The screening component (605) comprises a screening plate component (607), a driving component (608) and a reducing component (609); the screening plate component (607) is connected to the inside of the screening shell (601); one end of the driving component (608) is connected to the inside of the screening plate component (607); the other end of the driving component (608) is connected to the screening shell (601); a plurality of reducing components (609) are arranged inside the screening plate component (607); and the driving component (608) is connected in cooperation with the reducing components (609).

5. The device for preparing fly ash-based polymer regenerated roadbed according to claim 4, characterized in that: The sieve plate member (607) comprises a sieve top plate (6071), a sieve bottom plate (6072) and sieve holes (6073); the sieve top plate (6071) is connected to the inside of the sieve shell (601); the sieve top plate (6071) and the discharge port (604) are at the same level and are connected; the sieve bottom plate (6072) is connected to the inside of the sieve shell (601) at a position below the sieve top plate (6071); The screening holes (6073) are linearly and evenly spaced on the screening top plate (6071) and the screening bottom plate (6072); a plurality of the diameter-changing members (609) are disposed between the screening top plate (6071) and the screening bottom plate (6072) at positions relative to the screening holes (6073); and the driving member (608) is disposed between the screening top plate (6071) and the screening bottom plate (6072) at positions relative to the diameter-changing members (609).

6. The device for preparing fly ash-based polymer regenerated roadbed according to claim 5, characterized in that: The driving member (608) includes a cylinder (6081), a connecting rod (6082), a slide tube (6083), a sliding rod (6084) and a tooth groove (6085). The cylinder (6081) is connected to the side of the screening shell (601) away from the discharge port (604). The connecting rod (6082) is connected to the output end of the cylinder (6081). A plurality of slide tubes (6083) are symmetrically arranged at the end of the screening bottom plate (6072). One end of the sliding rod (6084) is movably inserted into the sliding tube (6083). The other end of the sliding rod (6084) is connected to the connecting rod (6082). The tooth groove (6085) is opened on the sliding rod (6084). The tooth groove (6085) is connected to the reducer (609).

7. The preparation device for fly ash-based polymer regeneration roadbed according to claim 6, characterized in that: The reducer (609) comprises a bottom ring (6091), annular teeth (6092), a curved groove (6093), a positioning rod (6094), a rotating blade (6095), a moving rod (6096), a micropore (6097), a top ring (6098) and a positioning hole (6099); the bottom ring (6091) is arranged on the screening bottom plate (6072) at a position relative to the screening hole (6073); the annular teeth (6092) are provided on the outer wall of the bottom ring (6091); the curved grooves (6093) are provided on the bottom ring (6091) in an annular shape and at equal intervals; the positioning rods (6094) are provided on the bottom ring (6091) in an annular shape and at equal intervals. On the bottom ring (6091), the rotating blade (6095) is rotatably connected to the positioning rod (6094), the moving rod (6096) is inserted into the rotating blade (6095), the bottom end of the moving rod (6096) is movably inserted into the curved groove (6093), a plurality of microholes (6097) are provided on the rotating blade (6095), the top ring (6098) is connected to the top end of the moving rod (6096), the positioning holes (6099) are provided in a circular shape at equal intervals on the top ring (6098), and the top end of the moving rod (6096) is inserted into the positioning holes (6099).

8. The device for preparing fly ash-based polymer regenerated roadbed according to claim 7, characterized in that: The extrusion molding mechanism (9) comprises a mounting frame (901), a lower hopper (902), a reduction motor (903), a gear set (904), a molding roller (905) and an elastic sparse component (906); the mounting frame (901) is connected to the top of the belt conveyor (8); the lower hopper (902) is arranged at the top of the mounting frame (901); the input end of the lower hopper (902) is connected to the output end of the mixing and stirring mechanism (7); the reduction motor (903) is connected to the back of the mounting frame (901); the molding roller (905) is arranged inside the mounting frame (901) and connected to the output end of the reduction motor (903); the gear set (904) is arranged at the front of the mounting frame (901) and connected to the molding roller (905); and the elastic sparse component (906) is arranged at a position on one side of the top of the mounting frame (901) relative to the lower hopper (902).

9. The device for preparing fly ash-based polymer regenerated roadbed according to claim 8, characterized in that: The spring-dredging assembly (906) comprises a support plate (9061), a threading shaft (9062), a second spring (9063), a rack (9064), a dredging bucket (9065), a vertical plate (9066), a limiting groove (9067), a toothed shaft (9068), a missing gear (9069) and a limiting rod (9060), wherein the support plate (9061) is arranged at an end of the mounting frame (901) away from the lower hopper (902), the threading shaft (9062) is movably threaded on the support plate (9061), the second spring (9063) is sleeved on the threading shaft (9062), the rack (9064) is arranged on the threading shaft (9062), and the dredging bucket (9065) is connected to the threading shaft. The shaft (9062) is away from one end of the support plate (9061), the vertical plate (9066) is symmetrically arranged on the mounting frame (901) at a position above the forming roller (905), the limiting groove (9067) is opened on the vertical plate (9066), the toothed wheel shaft (9068) is penetrated on the mounting frame (901), the outer end of the toothed wheel shaft (9068) is meshedly connected to the gear set (904), the missing gear (9069) is sleeved on the toothed wheel shaft (9068), the missing gear (9069) is meshedly connected to the bottom end of the rack (9064), and the limiting rod (9060) is symmetrically arranged on the end of the dredging bucket (9065) and is slidably inserted in the limiting groove (9067).

10. A method for preparing the fly ash-based polymer regeneration roadbed preparation device as claimed in claim 9, characterized in that: The following steps are involved: S1, crushing operation; First, the fly ash raw material to be processed is fed into a feed box (4), the impact crusher (3) crushes the fly ash into a required particle size range, and then the fly ash is fed into a screening mechanism (6) through a connecting box (5); S2, screening operation; S201, when it is necessary to screen fly ash particles with larger particle sizes, firstly, the stroke action of the cylinder (6081) is used to drive the connecting rod (6082) to move, and the connecting rod (6082) drives a plurality of sliding rods (6084) to move on the slide cylinder (6083), and the tooth grooves (6085) on the sliding rod (6084) are engaged with the ring teeth (6092) to drive the bottom ring (6091) to rotate in one direction, and the rotating blade (6095) is rotatably connected to the positioning rod (6094), and at this time, the moving rod (6096) connected to the rotating blade (6095) slides on the curved groove (6093), and the top ring (6098) and the positioning hole (6099) at the top are limited, so that the plurality of rotating blades (6095) are in an open state, and then the screening assembly (605) is driven to vibrate by the vibration motor (603) to pass the fly ash particles with larger particle sizes; S202. When it is necessary to screen the fly ash particles with smaller particle sizes, the return action of the cylinder (6081) is first used to drive the connecting rod (6082) to move. The connecting rod (6082) drives a plurality of sliding rods (6084) to move on the slide cylinder (6083). The tooth grooves (6085) on the sliding rod (6084) mesh with the ring teeth (6092) to drive the bottom ring (6091) to rotate in the other direction. The rotating blades (6095) are connected to the positioning rod ( At this time, the moving rod (6096) connected to the rotating blade (6095) slides on the curved groove (6093), and the top ring (6098) and the positioning hole (6099) at the top are limited, so that the plurality of rotating blades (6095) are in a closed state, and then the screening assembly (605) is driven to vibrate by the vibration motor (603), and the micropores (6097) on the rotating blade (6095) are used to pass the fly ash particles with small particle size; S203, when it is necessary to cut and separate the fly ash stuck in the molten state, firstly, the cylinder (6081) is used to drive the connecting rod (6082) to move by reciprocating return stroke, and the connecting rod (6082) drives a plurality of sliding rods (6084) to move on the slide cylinder (6083), and the tooth grooves (6085) on the sliding rod (6084) are engaged with the ring teeth (6092) to drive the bottom ring (6091) to reciprocate, and the rotating blade (6095) is rotatably connected to the positioning rod (6094), and the moving rod (6096) connected to the rotating blade (6095) slides on the curved groove (6093), and the top ring (6098) and the positioning hole (6099) at the top are limited, so that the plurality of rotating blades (6095) can quickly switch between the open and closed states, and then the screening assembly (605) is driven to vibrate by the vibration motor (603) to achieve separation of the stuck fly ash; S3, mixing and stirring operation; The pretreated fly ash particles enter the mixing and stirring mechanism (7) through the output end of the screening mechanism (6), an activator is injected into the mixing and stirring mechanism (7), and the pretreated fly ash and the activator are mixed and stirred by the mixing and stirring mechanism (7) so that the fly ash and the activator fully react to form a geopolymer; S4, forming operation; The geopolymer is introduced into between two forming rollers (905) through a lower hopper (902), and the geopolymer material is formed into a shape required for the roadbed through a reduction motor (903) and a gear set (904); S5. Maintenance operation; When the local polymer is blocked or unevenly discharged during the molding process, the gear set (904) is driven to rotate by the reduction motor (903), the gear set (904) drives the toothed wheel shaft (9068) to rotate, the toothed wheel shaft (9068) drives the missing gear (9069) to rotate, the missing gear (9069) is meshed with the rack (9064) so ​​that the penetration shaft (9062) squeezes the second spring (9063), the missing gear (9069) rotates to the end without teeth, the penetration shaft (9062) causes the dredging bucket (9065) to be quickly released due to the elastic force of the second spring (9063), and the limiting rod (9060) on the dredging bucket (9065) is slidably inserted in the limiting groove (9067) of the vertical plate (9066), so that the dredging bucket (9065) forms a dredging with a large impact force along the outer periphery of the molding roller (905).

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