A preparation device for fly ash-based polymer regenerated roadbed

Abstract

The invention discloses a preparation device for a fly ash base polymer regeneration roadbed, relates to the technical field of solid waste treatment, and aims to solve the technical problem of fly ash agglomeration when it is put into piles at a single point. In terms of fly ash putting, the invention has an ash spraying pipe that is vertically downward at the beginning, and fly ash is put into piles at a dispersed single point to avoid concentrated piles; when the local polymer liquid level rises, the ash spraying pipe floats up due to buoyancy and contacts an eccentric ring, and the gear rod drives the eccentric ring to rotate, so that the ash spraying pipe dynamically sprays ash in a chordal wave shape, further optimizing the problem of concentrated landing points; low liquid level vertical feeding ensures uniform coverage of the bottom, and high liquid level swinging ash spraying allows the fly ash to penetrate into the middle, avoiding the formation of an ash layer and improving the fusion effect; the invention has multiple dynamic ash spraying states, which solves the problems of poor fusion and easy overload of equipment caused by traditional single-point feeding, thereby improving production efficiency and product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment, and more particularly to a device for preparing a fly ash-based polymer regenerated roadbed. Background Art

[0002] With the deepening of the concept of resource recycling and increasing environmental protection requirements, the use of industrial solid wastes such as fly ash to prepare geopolymer-based recycled roadbed materials has become a research hotspot. Fly ash is rich in active components such as silicon and aluminum. Through polymerization with a geopolymer system composed of alkaline activators, it can form a cementitious material with excellent mechanical properties. Its use in roadbed projects can not only realize the resource utilization of solid waste, but also reduce dependence on traditional sand and gravel materials.

[0003] Currently, the preparation of fly ash-based polymer-regenerated roadbeds generally suffers from poor fusion between geopolymer and fly ash. Existing preparation equipment typically uses a single-point feeding method to feed fly ash into the reaction chamber. This feeding method causes the fly ash to accumulate in one place during its fall, forming large material clumps. Due to the uneven particle size of fly ash particles and the agglomeration of some particles, single-point accumulation of fly ash is difficult to quickly disperse during the subsequent mixing process. As a result, the alkaline activator in the geopolymer cannot fully contact the fly ash particles, greatly hindering the polymerization reaction. Furthermore, single-point stacking can easily cause local overload of the equipment, affecting mixing efficiency, increasing energy consumption, and even causing failure of the mixing equipment.

[0004] To address these issues, some studies have attempted to improve fusion by extending stirring time and increasing stirring intensity. However, this not only increases production costs but can also lead to material segregation or water loss due to excessive stirring, compromising final product quality. Therefore, there is an urgent need to develop a preparation device and method that can effectively prevent fly ash agglomeration at a single point and enhance the fusion of fly ash and geopolymer, thereby promoting the industrial application of fly ash-based polymer-regenerated roadbed materials. To this end, 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 provide a device for preparing a fly ash-based polymer regeneration roadbed, so as to solve the technical problem of fly ash agglomeration caused by a single-point input of fly ash.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a device for preparing a fly ash-based polymer regenerated roadbed, comprising a support, a geopolymer input mechanism provided on the support, a premixing mechanism provided on one side of the support, and an output end of the geopolymer input mechanism connected to an input end of the premixing mechanism;

[0007] The premixing mechanism has a linear moving end inside, and an ash dropping mechanism is suspended on the moving end of the premixing mechanism, and the ash dropping mechanism includes a carrier, an ash spraying pipe, a straight rod, a gear rod and an eccentric ring. The carrier is symmetrically suspended on the moving end of the premixing mechanism, and the straight rod is fixedly connected to the two carriers. The gear rod is rotatably connected to the two carriers at a position away from one end of the straight rod. The ash spraying pipe is linearly and equidistantly rotatably sleeved on the straight rod, and the eccentric ring is linearly and equidistantly sleeved on the gear rod. Two adjacent eccentric rings are deflected by one tooth and slidably sleeved on the gear rod.

[0008] The input end of the ash spraying pipe is connected to the external ash supply mechanism through a hose, and fly ash is transmitted to the ash spraying pipe through the hose. When there is a small amount of geopolymer in the premixing mechanism and the plane of the geopolymer does not exceed the vertical ash spraying pipe, the ash spraying pipe inputs fly ash vertically downward; when the geopolymer in the premixing mechanism is continuously injected and rises, the buoyancy structure at the output end of the ash spraying pipe causes the output end of the ash spraying pipe to float up, and the ash spraying pipe rotates around the straight rod until it contacts the outer wall of the eccentric ring. At this time, the gear rod is driven to rotate, and the gear rod drives several eccentric rings to rotate. The outer wall of the eccentric ring squeezes the ash spraying pipe to swing downward. Since the two adjacent eccentric rings deflect one tooth, the fly ash is dynamically sprayed into the several ash spraying pipes in a sine wave shape, forming a dynamic input point.

[0009] Preferably, an eccentric protrusion is provided on the inner wall of the eccentric ring, and a tooth hole is opened on the eccentric protrusion, and the tooth hole is adapted to the gear rod.

[0010] Preferably, the carrier is in an M shape, and is symmetrically provided with rotation holes, the two ends of the straight rod are fixedly inserted into two of the rotation holes, and the two ends of the gear rod are rotatably inserted into the other two rotation holes.

[0011] Preferably, the soot spraying pipe includes a curved pipe section, a straight pipe section, a sleeve block, a fly ash chamber, an input hole and an output hole, the curved pipe section is located at one end of the soot spraying pipe, the straight pipe section is located at the other end of the soot spraying pipe, the sleeve block is fixedly mounted on the curved pipe section, the soot spraying pipe is rotatably sleeved on the straight rod through the sleeve block, the fly ash chamber is opened inside the soot spraying pipe, the input hole is opened at a position on the curved pipe section close to the sleeve block, and the output hole is opened at an end of the straight pipe section away from the curved pipe section;

[0012] The fly ash is input into the input hole through a hose by an external ash supply mechanism, enters the fly ash chamber, passes through the curved pipe section and the straight pipe section, and is finally ejected from the output hole.

[0013] Preferably, the ash spraying pipe is further provided with a mounting seat, the mounting seat is provided with a float, and the mounting seat and the float are arranged at a position of the ash spraying pipe close to the output hole.

[0014] Preferably, racks are provided on the outer wall of the gear rod at equal intervals in a circular shape, and tooth grooves are provided on the inner wall of the gear hole at equal intervals in a circular shape, and the number of the racks is the same as the number of the tooth grooves.

[0015] Preferably, the premixing mechanism includes a base, a fixed ring, a driving assembly, a rotating cylinder, a fixed cylinder and a moving assembly. The two bases are arranged on one side of the bracket, the fixed ring is fixed on one of the bases, and the fixed cylinder is fixed on the other base. The driving assembly is arranged on the top of the fixed ring, the rotating cylinder is rotatably connected to the fixed ring, and the rotating cylinder is rotatably sleeved on the fixed cylinder at one end away from the fixed ring. The moving assembly is slidably inserted into the fixed cylinder and the rotating cylinder, and the ash falling mechanism is hoisted on the moving assembly.

[0016] Preferably, a curved groove is provided on the rotating cylinder, a straight groove is provided on the fixed cylinder, and the top end of the movable component is slidably inserted into the curved groove and the straight groove;

[0017] An outer wall of one end of the rotating cylinder is further provided with external teeth, and the external teeth are meshedly connected to the output end of the driving component.

[0018] Preferably, the driving assembly includes an arc fixing block, a motor and a gear, the arc fixing block is fixedly arranged at the top of the fixing ring and is adapted to the fixing ring, the motor is fixedly arranged at the top of the arc fixing block, the gear is fixedly connected to the output end of the motor, and the gear is meshedly connected to the external teeth.

[0019] Preferably, the moving component includes a sliding rod, an arc slider and a hanging plate. The sliding rod is slidably inserted into the curved groove and the straight groove. The arc slider is fixedly connected to the top of the sliding rod. The arc slider is slidably connected to the inner wall of the fixed cylinder. The hanging plate is fixedly hoisted to the bottom end of the arc slider, and the dust dropping mechanism is hoisted to the bottom end of the hanging plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, the external ash supply mechanism delivers fly ash to the ash spraying pipe through a hose. Since the ash spraying pipe is rotatably mounted on a straight rod through a sleeve block, and the geopolymer does not exert buoyancy on it in the initial state, the ash spraying pipe maintains a vertical downward posture. The fly ash falls vertically from the output hole to the bottom of the premixing mechanism, where it initially comes into contact with the geopolymer. At this time, the ash spraying pipes are arranged linearly with equal spacing, and the single-point feeding area is dispersed, avoiding the concentrated material accumulation problem of traditional single-point feeding.

[0022] 2. In the present invention, when the geopolymer is continuously injected into the premixing mechanism and the liquid level gradually rises to contact the output end of the soot spraying pipe, the straight pipe section of the soot spraying pipe is subjected to the buoyancy of the geopolymer. Since the soot spraying pipe can rotate around the straight rod, the buoyancy causes the output end of the soot spraying pipe to float upward, driving the soot spraying pipe to rotate counterclockwise around the straight rod. After the soot spraying pipe rotates, the sleeve at the top of its curved pipe section remains in rotational connection with the straight rod, and the straight pipe section gradually approaches the eccentric ring until it contacts the outer wall of the eccentric ring. At this time, the driving mechanism drives the gear rod to rotate, and the gear rod drives the plurality of eccentric rings to rotate. The two adjacent eccentric rings deflect a gear sleeve provided on the gear rod. Therefore, the gear rod drives the plurality of eccentric rings to rotate in a wave curve, pushing the plurality of soot spraying pipes into the geopolymer. The buoyancy causes the soot spraying pipe to float upward, forming a chord-shaped dynamic injection of fly ash, further optimizing the problem of concentrated fly ash landing points.

[0023] 3. When the liquid level of the geopolymer is low, the present invention feeds the material at a nearly vertical angle, ensuring uniform coverage of the bottom material layer. When the liquid level of the geopolymer is high, the ash spraying pipe swings and sprays fly ash, which can penetrate deep into the middle of the geopolymer and avoid floating on the liquid surface to form an ash layer. This solves the problem of poor fusion effect caused by the fly ash layer on the surface of the geopolymer caused by traditional feeding.

[0024] 4. In the present invention, the motor drives the gear to rotate, the gear meshing external teeth drives the rotating cylinder to rotate, the rotating cylinder drives the curved groove to rotate, the curved groove rotates and squeezes to push the slide bar to move along the straight groove of the fixed cylinder, the slide bar drives the arc slider and the hanging plate to move, the hanging plate drives the ash dropping mechanism to move, the dropping point of the ash dropping mechanism is replaced, and the sine wave dynamic ash spraying of the ash dropping mechanism is coordinated to form linear dynamic ash spraying, which further enriches the ash dropping points. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a front view structural schematic diagram of the present invention;

[0027] Figure 3 Schematic diagram of the external structure of the premixing mechanism of the present invention;

[0028] Figure 4 This is a schematic diagram of the split structure of the premixing mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal side structure of the premixing mechanism of the present invention;

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of the premixing mechanism of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the mobile end of the premixing mechanism and the ash dropping mechanism of the present invention;

[0032] Figure 8 It is a partial structural diagram of the dust dropping mechanism of the present invention;

[0033] Figure 9 This is a schematic cross-sectional view of the gear rod and eccentric ring of the present invention;

[0034] Figure 10 This is a schematic diagram of the gear rod and eccentric ring structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the cross-sectional structure of the ash spraying pipe of the present invention;

[0036] Figure 12 This is a schematic diagram of the motion state of the ash spraying pipe and the eccentric ring of the present invention;

[0037] Figure 13 This is a schematic diagram of the rotation trajectory of several eccentric rings following the gear rod of the present invention.

[0038] Description of the numbers in the figure:

[0039] 1. Bracket; 2. Geopolymer input mechanism; 3. Premixing mechanism; 4. Ash drop mechanism;

[0040] 401, carrier; 4011, rotary hole;

[0041] 402, ash spraying pipe; 4021, elbow section; 4022, straight section; 4023, sleeve; 4024, fly ash chamber; 4025, input hole; 4026, output hole; 4027, mounting seat; 4028, float;

[0042] 403, straight pole;

[0043] 404, gear rod; 4041, rack;

[0044] 405, eccentric ring; 4051, eccentric protrusion; 4052, tooth hole; 4053, tooth groove;

[0045] 301, base;

[0046] 302, fixed ring;

[0047] 303, drive assembly; 3031, arc fixing block; 3032, motor; 3033, gear;

[0048] 304, rotating cylinder; 3041, curved groove; 3042, external teeth;

[0049] 305, fixed cylinder; 3051, straight groove;

[0050] 306, moving component; 3061, sliding rod; 3062, arc slider; 3063, hanging plate. DETAILED DESCRIPTION

[0051] like Figures 1 to 13 As shown, the present invention relates to a preparation device for fly ash-based polymer regeneration roadbed, comprising a bracket 1, a geopolymer input mechanism 2 is provided on the bracket 1, a premixing mechanism 3 is provided on one side of the bracket 1, and the output end of the geopolymer input mechanism 2 is connected to the input end of the premixing mechanism 3;

[0052] The premixing mechanism 3 has a linear moving end inside, and an ash dropping mechanism 4 is suspended on the moving end of the premixing mechanism 3. The ash dropping mechanism 4 includes a carrier 401, an ash spraying pipe 402, a straight rod 403, a gear rod 404 and an eccentric ring 405. The carrier 401 is symmetrically suspended on the moving end of the premixing mechanism 3, the straight rod 403 is fixedly connected to the two carriers 401, and the gear rod 404 is rotatably connected to the two carriers 401 away from one end of the straight rod 403. The ash spraying pipe 402 is linearly and equidistantly rotatably sleeved on the straight rod 403, and the eccentric ring 405 is linearly and equidistantly sleeved on the gear rod 404. Two adjacent eccentric rings 405 are deflected by one tooth and slidably sleeved on the gear rod 404.

[0053] The input end of the ash spraying pipe 402 is connected to the external ash supply mechanism through a hose, and fly ash is transmitted to the ash spraying pipe 402 through the hose. When there is a small amount of geopolymer in the premixing mechanism 3 and the plane of the geopolymer does not exceed the vertical ash spraying pipe 402, the ash spraying pipe 402 inputs fly ash vertically downward; when the geopolymer in the premixing mechanism 3 is continuously injected and rises, the buoyancy structure at the output end of the ash spraying pipe 402 causes the output end of the ash spraying pipe 402 to float up, and the ash spraying pipe 402 rotates around the straight rod 403 until it contacts the outer wall of the eccentric ring 405, at this time driving the gear rod 404 to rotate, and the gear rod 404 drives several eccentric rings 405 to rotate, and the outer wall of the eccentric ring 405 squeezes the ash spraying pipe 402 to swing downward. Since the two adjacent eccentric rings 405 deflect one tooth, the fly ash is dynamically sprayed into the several ash spraying pipes 402 in a sine wave shape, forming a dynamic input point.

[0054] In the present invention, the external ash supply mechanism transports fly ash to the ash spraying pipe 402 through a hose. Since the ash spraying pipe 402 is rotatably sleeved on the straight rod 403 through the sleeve block 4023, and the geopolymer does not exert buoyancy on it in the initial state, the ash spraying pipe 402 maintains a vertical downward posture, and the fly ash falls vertically from the output hole 4026 to the bottom of the premixing mechanism 3, and initially comes into contact with the geopolymer. At this time, the ash spraying pipes 402 are arranged linearly with equal intervals, and the single-point feeding area is dispersed, avoiding the concentrated material stacking problem of traditional single-point feeding.

[0055] See also Figure 12, when the geopolymer is continuously injected into the premixing mechanism 3 and the liquid level gradually rises to contact the output end of the soot spraying pipe 402, the straight pipe section 4022 of the soot spraying pipe 402 is affected by the buoyancy of the geopolymer. Since the soot spraying pipe 402 can rotate around the straight rod 403, the buoyancy causes the output end of the soot spraying pipe to float upward, driving the soot spraying pipe to rotate counterclockwise around the straight rod 403. Assuming that the initial vertical downward angle is 0°, it forms an angle with the vertical direction after rotation. After the soot spraying pipe 402 rotates, the sleeve 4023 at the top of its curved pipe section 4021 maintains a rotational connection with the straight rod 403, and the straight pipe section 4022 gradually approaches the eccentric ring 405 until it contacts the outer wall of the eccentric ring 405. At this time, although the linearly arranged soot spraying pipes 402 disperse the single-point feeding area and avoid the problem of centralized feeding to a certain extent, the effect is still not very good.

[0056] At this time, the driving mechanism drives the gear rod 404 to rotate, and the gear rod 404 drives several eccentric rings 405 to rotate, such as Figure 9 and Figure 13 As shown, two adjacent eccentric rings 405 are deflected by a tooth sleeve arranged on the gear rod 404. Therefore, the gear rod 404 drives the eccentric rings 405 to rotate in a wave curve, pushing the ash injection pipes 402 into the geopolymer. The buoyancy causes the ash injection pipes 402 to float upward, forming a chord-shaped dynamic injection of fly ash, further optimizing the problem of concentrated fly ash landing points.

[0057] In an embodiment of the present invention, an eccentric ring 405 has an inner wall provided with an eccentric protrusion 4051, which has a tooth hole 4052 formed therein. The tooth hole 4052 is adapted to fit over the gear rod 404. In the present invention, the eccentric ring 405 is slidably mounted on the gear rod 404 through the tooth hole 4052 of the eccentric protrusion 4051. In the present invention, each eccentric ring 405 is sequentially mounted on the gear rod 404 by rotating 22.5° about the center of the tooth hole 4052.

[0058] In an embodiment of the present invention, the carrier 401 is M-shaped and symmetrically provided with rotating holes 4011 . The two ends of the straight rod 403 are fixedly inserted into the two rotating holes 4011 , and the two ends of the gear rod 404 are rotatably inserted into the other two rotating holes 4011 .

[0059] In an embodiment of the present invention, the soot spraying pipe 402 includes a curved pipe section 4021, a straight pipe section 4022, a sleeve 4023, a fly ash chamber 4024, an input hole 4025, and an output hole 4026. The curved pipe section 4021 is located at one end of the soot spraying pipe 402, and the straight pipe section 4022 is located at the other end of the soot spraying pipe 402. The sleeve 4023 is fixedly mounted on the curved pipe section 4021. The soot spraying pipe 402 is rotatably sleeved on the straight rod 403 through the sleeve 4023. The fly ash chamber 4024 is provided inside the soot spraying pipe 402. The input hole 4025 is provided on the curved pipe section 4021 near the sleeve 4023. The output hole 4026 is provided at the end of the straight pipe section 4022 away from the curved pipe section 4021.

[0060] Fly ash is input into the input hole 4025 through a hose via an external ash supply mechanism and enters the fly ash chamber 4024 , passes through the curved pipe section 4021 and the straight pipe section 4022 , and is finally ejected from the output hole 4026 .

[0061] See also Figure 12 In the present invention, the sleeve block 4023 is fixed to the top of the curved pipe section 4021 and is rotatably mounted on the straight rod 403, allowing the soot spraying pipe 402 to rotate freely about the axis of the straight rod 403. This rotational connection provides a mechanical fulcrum for the dynamic swing of the soot spraying pipe 402. When the straight pipe section 4022 is subjected to buoyancy or compression by the eccentric ring 405, the soot spraying pipe 402 rotates about the connection point between the sleeve block 4023 and the straight rod 403, causing the angle of the output hole 4026 to change, for example, from a vertical downward position to an inclined swing.

[0062] In this embodiment of the present invention, the soot spraying pipe 402 is further provided with a mounting seat 4027, on which a float 4028 is mounted. The mounting seat 4027 and the float 4028 are located on the soot spraying pipe 402 near the output hole 4026. When the geopolymer liquid level rises to contact the float 4028, the float 4028 is subjected to the buoyancy of the geopolymer liquid and generates an upward thrust. The buoyancy of the float 4028 is transmitted to the straight pipe section 4022 of the soot spraying pipe 402 through the mounting seat 4027. Since the soot spraying pipe can rotate around the straight rod 403, this buoyancy forces the output end of the soot spraying pipe to float upward, driving the soot spraying pipe to rotate counterclockwise around the straight rod 403 until the straight pipe section 4022 contacts the outer wall of the eccentric ring 405.

[0063] In another embodiment of the present invention, racks 4041 are arranged in a circular pattern at equal intervals on the outer wall of a rack rod 404, and tooth grooves 4053 are arranged in a circular pattern at equal intervals on the inner wall of a tooth hole 4052. The number of racks 4041 is the same as the number of tooth grooves 4053. In the present invention, there are 16 racks 4041 and 16 tooth grooves 4053. The plurality of tooth holes 4052 are sequentially rotated 22.5 degrees and sleeved on the rack rod 404.

[0064] As another embodiment of the present invention, the premixing mechanism 3 includes a base 301, a fixed ring 302, a drive assembly 303, a rotating cylinder 304, a fixed cylinder 305 and a moving assembly 306. The two bases 301 are arranged on one side of the bracket 1, the fixed ring 302 is fixed on one of the bases 301, the fixed cylinder 305 is fixed on the other base 301, the drive assembly 303 is arranged on the top of the fixed ring 302, the rotating cylinder 304 is rotatably connected to the fixed ring 302, and the end of the rotating cylinder 304 away from the fixed ring 302 is rotatably sleeved on the fixed cylinder 305, the moving assembly 306 is slidably inserted into the fixed cylinder 305 and the rotating cylinder 304, and the ash falling mechanism 4 is hoisted on the moving assembly 306.

[0065] As another embodiment of the present invention, a curved groove 3041 is formed on the rotating cylinder 304, a straight groove 3051 is formed on the fixed cylinder 305, and the top end of the movable component 306 is slidably inserted into the curved groove 3041 and the straight groove 3051;

[0066] An outer wall of one end of the rotating cylinder 304 is further provided with external teeth 3042 , which are meshedly connected to the output end of the driving assembly 303 .

[0067] As another embodiment of the present invention, the driving assembly 303 includes an arc fixing block 3031, a motor 3032 and a gear 3033. The arc fixing block 3031 is fixed at the top of the fixing ring 302 and is adapted to the fixing ring 302. The motor 3032 is fixed at the top of the arc fixing block 3031. The gear 3033 is fixedly connected to the output end of the motor 3032. The gear 3033 is meshedly connected to the external tooth 3042.

[0068] As another embodiment of the present invention, the moving component 306 includes a sliding rod 3061, an arc slider 3062 and a hanging plate 3063. The sliding rod 3061 is slidably inserted into the curved groove 3041 and the straight groove 3051. The arc slider 3062 is fixedly connected to the top of the sliding rod 3061. The arc slider 3062 is slidably connected to the inner wall of the fixed cylinder 305. The hanging plate 3063 is fixedly suspended at the bottom end of the arc slider 3062, and the dust falling mechanism 4 is suspended at the bottom end of the hanging plate 3063.

[0069] In the present invention, the motor 3032 drives the gear 3033 to rotate, the gear 3033 engages the external teeth 3042 to drive the rotating cylinder 304 to rotate, the rotating cylinder 304 drives the curved groove 3041 to rotate, the curved groove 3041 rotates and squeezes to push the slide rod 3061 to move along the straight groove 3051 of the fixed cylinder 305, the slide rod 3061 drives the arc slider 3062 and the hanging plate 3063 to move, the hanging plate 3063 drives the ash dropping mechanism 4 to move, replaces the dropping point of the ash dropping mechanism 4, and cooperates with the sine wave dynamic ash spraying of the ash dropping mechanism 4 to form linear dynamic ash spraying, further enriching the ash dropping points.

[0070] Working Principle: This embodiment provides a method for using a device for preparing a fly ash-based polymer regeneration roadbed, comprising the following steps:

[0071] S1. Start the geopolymer input mechanism 2 and inject a small amount of geopolymer into the premixing mechanism 3. At this time, the liquid level is lower than the vertical height of the ash spraying pipe 402, and the ash spraying pipe 402 remains in a vertical downward position. The external ash supply mechanism is turned on, and fly ash enters the fly ash chamber 4024 of the ash spraying pipe 402 through the input hole 4025 of the hose, and vertically falls from the output hole 4026 to the bottom of the premixing mechanism 3, where it initially comes into contact with the geopolymer.

[0072] S2. Geopolymer is continuously injected into the premixing mechanism 3 through the geopolymer input mechanism 2. The liquid level gradually rises until it contacts the float 4028 at the output end of the soot injection pipe 402. Buoyancy forces the float 4028 to drive the soot injection pipe 402 to rotate counterclockwise around the straight rod 403 until the straight pipe section 4022 contacts the outer wall of the eccentric ring 405. Simultaneously, the gear rod 404 is driven to rotate, driving the eccentric ring 405 to rotate in a wave-like curve. The outer wall of the eccentric ring 405 squeezes the soot injection pipe 402 and swings it downward. This, combined with the upward floating force, causes the soot injection pipe 402 to dynamically swing in a chordal wave-like pattern, and the fly ash is injected into the geopolymer in a dynamic, multi-point manner.

[0073] S3. The motor 3032 drives the gear 3033 to rotate. The gear 3033 engages with the external teeth 3042 to drive the rotating cylinder 304 to rotate. The rotating cylinder 304 drives the curved groove 3041 to rotate. The curved groove 3041 rotates and squeezes the sliding rod 3061 to move along the straight groove 3051 of the fixed cylinder 305. The sliding rod 3061 drives the arc slider 3062 and the hanging plate 3063 to move. The hanging plate 3063 drives the ash dropping mechanism 4 to move, and the linear dropping point of the ash dropping mechanism 4 is replaced.

[0074] S4. After the fly ash is uniformly and dispersedly premixed with the geopolymer, it is introduced into a stirring mechanism for the subsequent deep stirring reaction process;

[0075] S5. After deep stirring reaction, the stirring mechanism outputs the material to the forming mechanism to shape it into a recycled roadbed blank, thus completing the preparation.

[0076] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A preparation device for fly ash-based polymer regeneration roadbed, characterized in that: It comprises a bracket, a geopolymer input mechanism is provided on the bracket, a premixing mechanism is provided on one side of the bracket, and an output end of the geopolymer input mechanism is connected to an input end of the premixing mechanism; The premixing mechanism has a linear moving end inside, and an ash dropping mechanism is suspended on the moving end of the premixing mechanism, and the ash dropping mechanism includes a carrier, an ash spraying pipe, a straight rod, a gear rod and an eccentric ring. The carrier is symmetrically suspended on the moving end of the premixing mechanism, and the straight rod is fixedly connected to the two carriers. The gear rod is rotatably connected to the two carriers at a position away from one end of the straight rod. The ash spraying pipe is linearly and equidistantly rotatably sleeved on the straight rod, and the eccentric ring is linearly and equidistantly sleeved on the gear rod. Two adjacent eccentric rings are deflected by one tooth and slidably sleeved on the gear rod. The input end of the ash spraying pipe is connected to the external ash supply mechanism through a hose, and fly ash is transmitted to the ash spraying pipe through the hose. When there is a small amount of geopolymer in the premixing mechanism and the plane of the geopolymer does not exceed the vertical ash spraying pipe, the ash spraying pipe inputs fly ash vertically downward; when the geopolymer in the premixing mechanism is continuously injected and rises, the buoyancy structure at the output end of the ash spraying pipe causes the output end of the ash spraying pipe to float up, and the ash spraying pipe rotates around the straight rod until it contacts the outer wall of the eccentric ring. At this time, the gear rod is driven to rotate, and the gear rod drives several eccentric rings to rotate. The outer wall of the eccentric ring squeezes the ash spraying pipe downward and swings. Since the two adjacent eccentric rings deflect one tooth, the fly ash is dynamically sprayed into the several ash spraying pipes in a sine wave shape, forming a dynamic input point; The soot spraying pipe includes a curved pipe section, a straight pipe section, a sleeve block, a fly ash chamber, an input hole and an output hole, the curved pipe section is located at one end of the soot spraying pipe, the straight pipe section is located at the other end of the soot spraying pipe, the sleeve block is fixedly mounted on the curved pipe section, the soot spraying pipe is rotatably sleeved on the straight rod through the sleeve block, the fly ash chamber is opened inside the soot spraying pipe, the input hole is opened at a position on the curved pipe section close to the sleeve block, and the output hole is opened at one end of the straight pipe section away from the curved pipe section; The fly ash is fed into the input hole through a hose by an external ash supply mechanism, enters the fly ash chamber, passes through the curved pipe section and the straight pipe section, and is finally ejected from the output hole; The ash spraying pipe is further provided with a mounting seat, and the mounting seat is provided with a floating ball. The mounting seat and the floating ball are arranged at a position of the ash spraying pipe close to the output hole.

2. The device for preparing a fly ash-based polymer regenerated roadbed according to claim 1, characterized in that: An eccentric protrusion is provided on the inner wall of the eccentric ring. A tooth hole is opened on the eccentric protrusion. The tooth hole is adapted to the gear rod.

3. The device for preparing a fly ash-based polymer regenerated roadbed according to claim 2, characterized in that: The carrier is in an M shape and is symmetrically provided with rotation holes. The two ends of the straight rod are fixedly inserted into two of the rotation holes, and the two ends of the gear rod are rotatably inserted into the other two rotation holes.

4. The device for preparing a fly ash-based polymer regenerated roadbed according to claim 3, characterized in that: The outer wall of the gear rod is provided with racks in a circular shape with equal intervals, and the inner wall of the gear hole is provided with tooth grooves in a circular shape with equal intervals, and the number of the racks is the same as the number of the tooth grooves.

5. The device for preparing a fly ash-based polymer regenerated roadbed according to claim 4, characterized in that: The premixing mechanism includes a base, a fixed ring, a driving assembly, a rotating cylinder, a fixed cylinder and a moving assembly. The two bases are arranged on one side of the bracket, the fixed ring is fixed on one of the bases, and the fixed cylinder is fixed on the other base. The driving assembly is arranged on the top of the fixed ring, the rotating cylinder is rotatably connected to the fixed ring, and the rotating cylinder is rotatably sleeved on the fixed cylinder at one end away from the fixed ring. The moving assembly is slidably inserted into the fixed cylinder and the rotating cylinder, and the ash falling mechanism is hoisted on the moving assembly.

6. The device for preparing a fly ash-based polymer regenerated roadbed according to claim 5, characterized in that: The rotating cylinder is provided with a curved groove, the fixed cylinder is provided with a straight groove, and the top end of the movable component is slidably inserted into the curved groove and the straight groove; An outer wall of one end of the rotating cylinder is further provided with external teeth, and the external teeth are meshedly connected to the output end of the driving component.

7. The device for preparing a fly ash-based polymer regenerated roadbed according to claim 6, characterized in that: The driving assembly includes an arc fixing block, a motor and a gear. The arc fixing block is fixedly arranged at the top of the fixing ring and is adapted to the fixing ring. The motor is fixedly arranged at the top of the arc fixing block. The gear is fixedly connected to the output end of the motor, and the gear is meshed and connected to the external teeth.

8. The device for preparing a fly ash-based polymer regenerated roadbed according to claim 7, characterized in that: The moving assembly includes a sliding rod, an arc slider and a hanging plate. The sliding rod is slidably inserted into the curved groove and the straight groove. The arc slider is fixedly connected to the top of the sliding rod. The arc slider is slidably connected to the inner wall of the fixed cylinder. The hanging plate is fixedly hoisted at the bottom end of the arc slider, and the dust dropping mechanism is hoisted at the bottom end of the hanging plate.

Images