Building solid waste and coal gangue proportioning and recycling device and preparation method

Abstract

The invention discloses a building solid waste and coal gangue proportioning and recycling device and a preparation method. The building solid waste and coal gangue proportioning and recycling device is characterized in that the raw material ratio of building solid waste aggregate to coal gangue to cement is 6: 3: 1-4: 5: 1; mixing a stabilizer into the raw materials; adding 3-5% of fly ash; 0.3%-0.5% of polyacrylamide serving as an organic modifier is added; 1) primary crushing; 2) magnetic separation; (3) secondary crushing; 4) winnowing and impurity removal: removing light impurities such as wood and plastic; 5) screening; (6) grading optimization; (7) proportioning; 8) mixing; (9) paving; the discharging channel is installed on the machine frame, and a feeding port is formed in the side wall of the discharging channel. The material pushing and cleaning mechanism is mounted in the discharging channel; the mixing mechanism is located at the end of the discharging channel. According to the invention, the coarse aggregate and the fine aggregate obtained by crushing the building solid waste and the coal gangue are proportionally prepared, so that gaps among the aggregates can be reduced, and the compactness is improved; the roadbed cracking risk is reduced; and the strength loss in a saturation state is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of recycling of construction solid waste, and particularly relates to a device and a preparation method for recycling the mixture of construction solid waste and gangue. Background Art

[0002] At present, after construction solid waste is crushed and screened, it is used as the basic material for subgrade filling. However, there are easy voids between the aggregate particles after the construction solid waste is crushed, resulting in insufficient density. The brittleness of the rigid aggregate of construction waste is likely to cause subgrade cracking.

[0003] After retrieval, the prior art publication number CN116120033A discloses a subgrade filler based on construction waste, its preparation method and a subgrade filling method, including: obtaining construction waste; classifying the construction waste, including brick-concrete waste, sheet waste and composite waste, the brick-concrete waste includes sintered bricks and concrete, the sheet waste includes ceramic tiles and tiles, and the composite waste includes steel bars, plastics and rubbers; crushing the brick-concrete waste; crushing the sheet waste; sorting the composite waste; obtaining the subgrade filler;

[0004] After retrieval, the prior art publication number CN117776597A discloses a subgrade filler based on construction waste and its preparation method, including fibrous construction waste, sandy construction waste and clay, and the added weight ratio of the fibrous construction waste, the sandy construction waste and the clay is 0.5-1:6-9:1-3, and the moisture content of the clay is controlled at 6 to 15%;

[0005] The above patents have the following disadvantages in their treatment processes: there are easy voids between the aggregate particles after the construction waste is crushed, resulting in insufficient density; the brittleness of the rigid aggregate of construction waste is likely to cause subgrade cracking; and a large amount of bricks, tiles and mortar in the construction waste are easy to soften when encountering water; thus affecting the quality of the filling material. Summary of the Invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a device and a preparation method for recycling the mixture of construction solid waste and gangue. The coarse aggregate and fine aggregate after the construction solid waste and gangue are crushed are proportionally prepared, which can reduce the voids between the aggregates and improve the density; the gangue contains clay minerals and has a certain plasticity, which can relieve the brittleness of the rigid aggregate of construction waste and reduce the risk of subgrade cracking; moreover, the bricks, tiles and mortar in pure construction waste are easy to soften when encountering water, while the clay component in gangue can adsorb part of the water and reduce the strength loss in the saturated state.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0008] Device and preparation method for recycling and utilization of building solid waste and coal gangue with raw material ratio of building solid waste aggregate: coal gangue: cement = 6:3:1 - 4:5:1; adding stabilizers to the raw materials: adding 3 - 5% of fly ash to enhance compressive strength and inhibit weathering of coal gangue; adding 0.3% - 0.5% of organic modifier polyacrylamide; improving anti-seepage performance;

[0009] The specific steps of the treatment method for the recycled filling material with the ratio of building solid waste and coal gangue are as follows:

[0010] 1) Primary crushing: Respectively crush the building solid waste and coal gangue through a jaw crusher to a particle size of 0 - 300 mm;

[0011] 2) Magnetic separation: Remove steel bars and metal parts;

[0012] 3) Secondary crushing: Respectively perform secondary crushing on the building solid waste and coal gangue through a counterattack crusher;

[0013] 4) Pneumatic separation for impurity removal: Remove light impurities such as wood and plastic;

[0014] 5) Screening: 3 - 5 layers of multi-layer circular vibrating screens; The particle sizes of the screened aggregates are: coarse aggregates: 20 - 40 mm; fine aggregates: 5 - 20 mm; powder: 0 - 5 mm;

[0015] 6) Gradation optimization: Adjust the proportions of different particle sizes, with 50% - 70% of 20 - 40 mm coarse aggregates, 15% - 25% of 5 - 20 mm fine aggregates, and 5% - 10% of 0 - 5 powder;

[0016] 7) Proportioning: Transport the raw materials to the inside of the storage box in proportion, and then enter the corresponding discharge channels respectively. Discharge the raw materials through the pushing and cleaning mechanism inside the discharge channels and stack them together;

[0017] 8) Mixing: Mix the materials through a mixing mechanism; and pre-press and level the mixed materials through a pre-pressing mechanism;

[0018] 9) Spreading: Spread the mixed materials through a spreading mechanism;

[0019] Preferably, the building solid waste aggregate in step 1) includes broken bricks and tiles, concrete, and waste mortar;

[0020] A device for recycling and utilizing a proportion of construction solid waste and coal gangue, comprising a frame, a discharging channel, a pushing and cleaning mechanism, a mixing mechanism, and a spreading mechanism; a movable wheel is provided at the bottom of the frame; a plurality of discharging channels are provided, and the height of the discharging channels is installed according to the proportion of the materials, the discharging channels are stacked on the frame, a feeding port is provided on the side wall of the discharging channel, and an inclined plate is provided at one end of the discharging channel; the pushing and cleaning mechanism is installed inside the discharging channel; the mixing mechanism is located at the end of the discharging channel, and the spreading mechanism is located at one side of the mixing mechanism.

[0021] The push and clean mechanism comprises a push plate, a mounting frame, a fixed plate, an electric push rod I, an electric push rod II, a connecting rod, a connecting plate and a connecting block; a pair of push plates are provided and are V-shaped, and the height of the push plates is consistent with the height of the discharge channel; the fixed plate is fixed to one end of the discharge channel away from the discharge port, and the electric push rod I is fixed to the fixed plate; the mounting frame is connected to the output end of the electric push rod I, the electric push rod II is fixed to the side wall of the mounting frame, and a clearance groove is provided on the fixed plate; the connecting rod is rotatably connected to the mounting frame through a rotating shaft, one end of the connecting plate is rotatably connected to the end of the connecting rod away from the mounting frame through a rotating shaft, and the other end is fixed to the side wall of the push plate; the connecting block is rotatably connected to the push plate through a rotating shaft, and is connected to the output end of the electric push rod II.

[0022] The push plate is provided with a scraping mechanism; the scraping mechanism includes a mounting plate, an electric push rod III, a screw I, a motor I, a scraper, a water inlet pipe, and a nozzle; an inclined groove is provided on the top of the push plate, and the bottom of the mounting plate is set to be inclined and corresponding to the inclined groove; the electric push rod III is fixed on the push plate, and the output end is connected to the mounting plate; a mounting groove is provided at the bottom of the mounting plate, and both ends of the screw I are rotatably connected inside the mounting groove through bearings, the motor I is fixed at the end of the mounting groove, and the output end is connected to one end of the screw I; the scraper is connected to the screw I through a thread, and the side wall of the scraper is in contact with the surface of the push plate; the water inlet pipe is fixed inside the mounting plate on one side of the screw I, one end of the nozzle is connected to the water inlet pipe, and the other end passes through the mounting plate.

[0023] A telescopic plate is provided at the bottom of the push plate, the top of the telescopic plate is connected to the guide shaft, a spring is provided on the outside of the guide shaft, and the spring is fixed on the top of the telescopic plate and inside the push plate; a baffle is located below the push plate; an electric push rod III is fixed on the push plate, and an output end is connected to the baffle.

[0024] The paving mechanism includes a frame, a paving plate, a leveling plate, an electric push rod IV, a threaded rod, a motor II, a guide rod, and a convex plate; the frame is connected to the frame, the paving plate is movably connected to the end of the frame away from the frame, the convex plate is fixed to the side wall of the frame, the threaded rod is rotatably connected to the convex plate through a bearing, and the guide rod is fixed to the convex plate symmetrical to the threaded rod; motor II is fixed to the convex plate, and the output end is connected to one end of the threaded rod; the two ends of the paving plate are respectively connected to the threaded rod and the guide rod, the leveling plate is rotatably connected to the bottom of the paving plate through a rotating shaft, the electric push rod IV is connected to the side wall of the paving plate, and the output end is connected to the leveling plate.

[0025] The mixing mechanism includes a rotating shaft, spiral blades, mixing rods, Motor III, a movable plate, and support rods; a square groove is provided on the side wall of the frame; the movable plate is movably connected within the square groove, and the rotating shaft is rotatably connected to the paving mechanism through a bearing; the spiral blades are fixed on the rotating shaft, several mixing rods are provided and are evenly fixed on the rotating shaft between the spiral blades; Motor III is fixed on the outer side wall of the movable plate, and the output end is connected to one end of the rotating shaft; the support rods are fixed on the movable plate inside the frame.

[0026] A top cover is provided above the mixing mechanism, and the top cover is obliquely fixed at the end of the discharge channel.

[0027] A preloading mechanism is provided on the outer side wall of the top cover; the preloading mechanism includes a preloading plate, guide rails, connecting rods, connecting seats, connecting arms, adjusting arms, Oil Cylinder I, and Oil Cylinder II; the guide rails are fixed on the side wall of the frame, one end of the connecting rod is movably connected inside the guide rails, and the preloading plate is fixed at the end of the connecting rod away from the guide rails; a guiding groove is provided on the top of the preloading plate; the connecting seat is fixed on the side wall of the top cover, the connecting arm is rotatably connected to the connecting seat through a rotating shaft, one end of the adjusting arm is rotatably connected to the end of the connecting arm away from the connecting seat through a rotating shaft, and the other end is connected to the preloading plate through a movable seat, Oil Cylinder I is rotatably connected to the connecting seat and the connecting arm, and Oil Cylinder II is connected to the connecting arm and the adjusting arm; one end of the support rod away from the movable plate is connected to the preloading plate.

[0028] The beneficial effects of the present invention compared with the prior art are as follows:

[0029] 1) The coarse and fine aggregates after crushing of construction solid waste and coal gangue are proportioned, which can reduce the voids between the aggregates and improve the density; coal gangue contains clay minerals and has a certain plasticity, which can relieve the brittleness of the rigid aggregates of construction waste and reduce the risk of subgrade cracking; moreover, the bricks, tiles, and mortar in pure construction waste are easy to soften when encountering water, while the clay component in coal gangue can adsorb part of the water and reduce the strength loss under the saturated state;

[0030] 2) First, the electric push rod II provides power to drive the connecting block to move. The connecting block drives the push plate and the connecting plate to move. At the same time, the connecting plate drives the connecting rod to rotate, causing the push plate and the connecting plate to rotate around the rotating shaft of the connecting block, so that the push plate opens. The electric push rod I provides power to drive the installation frame to move. The installation frame drives the push plate to move forward through the connecting rod and the connecting plate, thereby pushing the material in the discharge channel forward. Then, when the electric push rod I drives the push plate to return, the electric push rod II drives the push plate to rotate through the connecting block, the connecting plate, and the connecting rod, causing the push plate to move closer to the middle, thereby preventing the push plate from bringing the material back. The electric push rod III provides power to drive the installation plate to move, so that the installation plate moves away from the push plate. The motor I provides power to drive the lead screw to rotate. The lead screw drives the scraper to move along the installation groove through the thread, so that the scraper scrapes the material on the surface of the push plate, preventing the material from caking. At the same time, the flushing water enters through the water inlet pipe and is sprayed onto the push plate through the nozzle, which can improve the cleaning efficiency of the push plate;

[0031] 3) When cleaning the discharge channel, the electric push rod I drives the push plate to move through the installation frame, thereby cleaning the discharge channel through the push plate. When moving to the position of the inclined plate, the electric push rod III provides power to drive the baffle to move, and the telescopic plate moves downward under the action of the spring, so that the bottom of the telescopic plate contacts the surface of the inclined plate, thereby being able to clean the inclined plate. Moreover, the spring can ensure that the bottom of the telescopic plate always contacts the inclined plate. Description of the Drawings

[0032] Appendix Figure 1 is a schematic structural diagram of the material pushing and cleaning mechanism in the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention;

[0033] Appendix Figure 2 is a schematic structural diagram of the push plate in the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention;

[0034] Appendix Figure 3 is a schematic structural diagram of the scraping mechanism in the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention;

[0035] Appendix Figure 4 is a schematic internal structure diagram of the push plate in the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention;

[0036] Appendix Figure 5 is a schematic structural diagram of the mixing mechanism in the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention;

[0037] Appendix Figure 6 is a schematic structural diagram of the pre-pressing mechanism in the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention;

[0038] AppendixFigure 7 is the enlarged structural schematic diagram of part A in the attached drawing of the present invention; Figure 6 ;

[0039] The attached drawing Figure 8 is the structural schematic diagram of the paving mechanism in the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention;

[0040] The attached drawing Figure 9 is the structural schematic diagram of the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention Figure 1 ;

[0041] The attached drawing Figure 10 is the structural schematic diagram of the device and preparation method for the proportioning recovery and utilization of construction solid waste and gangue of the present invention Figure 2 ;

[0042] In the figure: 1, frame; 2, discharge channel; 201, feed inlet; 3, pusher and cleaning mechanism; 301, push plate; 3011, inclined chute; 3012, telescopic plate; 3013, guide shaft; 3014, spring; 3015, baffle; 3016, electric push rod VIII; 302, mounting frame; 303, fixing plate; 3031, relief groove; 304, electric push rod I; 305, electric push rod II; 306, connecting rod; 307, connecting plate; 308, connecting block; 309, scraping mechanism; 3091, mounting plate; 30911, mounting groove; 3092, electric push rod III; 3093, lead screw I; 3094, motor I; 3095, scraper; 3096, water inlet pipe; 3097, spray head; 4, mixing mechanism; 401, rotating shaft; 402, spiral blade; 403, mixing rod; 404, motor III; 405, top cover; 406, preloading mechanism; 4061, preloading plate; 40611, guide groove; 4062, guide rail; 4063, connecting rod; 4064, connecting seat; 4065, connecting arm; 4066, adjusting arm; 4067, oil cylinder I; 4068, oil cylinder II; 407, movable plate; 408, support rod; 5, paving mechanism; 501, frame; 5011, square groove; 502, paving plate; 503, leveling plate; 504, electric push rod IV; 505, threaded rod; 506, motor II; 507, guide rod; 508, convex plate. Specific embodiments

[0043] For the convenience of those skilled in the art to understand, the technical solutions of the present invention will be further specifically described below in conjunction with the attached drawings Figure 1-10 .

[0044] Example 1:

[0045] Device and preparation method for recycling building solid waste and gangue by proportioning, with the raw material proportion being building solid waste aggregate: gangue: cement = 6:3:1; adding stabilizers to the raw materials: adding 3% fly ash to enhance the compressive strength and inhibit the weathering of gangue; adding 0.3% organic modifier polyacrylamide; improving the anti-seepage performance;

[0046] The specific steps of the treatment method for the recycled filling material by proportioning building solid waste and gangue are as follows:

[0047] 1) Primary crushing: Respectively crush the building solid waste and gangue through a jaw crusher to a particle size of 200 mm;

[0048] 2) Magnetic separation: Remove steel bars and metal parts;

[0049] 3) Secondary crushing: Respectively perform secondary crushing on the building solid waste and gangue through a counterattack crusher;

[0050] 4) Pneumatic separation and impurity removal: Remove light impurities such as wood and plastic;

[0051] 5) Screening: 3 layers of multi-layer circular vibrating screens; The particle sizes of the screened aggregates are: coarse aggregates: 20 - 40 mm; fine aggregates: 5 - 20 mm; powder: 0 - 5 mm;

[0052] 6) Gradation optimization: Adjust the proportions of different particle sizes, with 50% of the 20 - 40 mm coarse aggregates, 25% of the 5 - 20 mm fine aggregates, and 10% of the 0 - 5 powder;

[0053] 7) Proportioning: Transport the raw materials to the inside of the storage box according to the proportion, and then enter the corresponding discharge channels respectively. The raw materials are discharged through the material pushing and cleaning mechanism inside the discharge channels and stacked together;

[0054] 8) Mixing: Mix the materials through a mixing mechanism, and pre-press and level the mixed materials through a pre-pressing mechanism;

[0055] 9) Paving: Pave the mixed materials through a paving mechanism;

[0056] A construction solid waste and coal gangue proportioning recycling device comprises a frame 1, a discharge channel 2, a pushing and cleaning mechanism 3, a mixing mechanism 4, and a spreading mechanism 5; a moving wheel is provided at the bottom of the frame 1; a plurality of discharge channels 2 are provided, and the height of the discharge channels 2 is installed according to the proportion of the materials, the discharge channels 2 are stacked on the frame 1, a feed port 201 is provided on the side wall of the discharge channel 2, and an inclined plate is provided at one end of the discharge channel 2; the pushing and cleaning mechanism 3 is installed inside the discharge channel 2; the mixing mechanism 4 is located at the end of the discharge channel 2, and the spreading mechanism 5 is located on one side of the mixing mechanism 4; the material enters the discharge channel 2 through the feed port 201, the material in the discharge channel 2 is pushed out by the pushing and cleaning mechanism 3, and then the material is mixed by the mixing mechanism 4, and finally the mixed material is evenly spread by the spreading mechanism 5.

[0057] The pushing and cleaning mechanism 3 includes a pushing plate 301, a mounting frame 302, a fixing plate 303, an electric push rod I 304, an electric push rod II 305, a connecting rod 306, a connecting plate 307, and a connecting block 308; the pushing plate 301 is provided with a pair of V-shaped ones, and the height of the pushing plate 301 is consistent with the height of the discharging channel 2; the fixing plate 303 is fixed to the end of the discharging channel 2 away from the discharging port, and the electric push rod I 304 is fixed on the fixing plate 303; the mounting frame 302 is connected to the output end of the electric push rod I 304, the electric push rod II 305 is fixed on the side wall of the mounting frame 302, and a clearance groove 3031 is provided on the fixing plate 303, which can facilitate the electric push rod II 305 to pass through; the connecting rod 306 is rotatably connected to the mounting frame 302 through a rotating shaft, one end of the connecting plate 307 is rotatably connected to the end of the connecting rod 306 away from the mounting frame 302 through a rotating shaft, and the other end is fixed on the side wall of the pushing plate 301; the connecting block 308 is rotated The shaft is rotatably connected to the push plate 301 and is connected to the output end of the electric push rod II 305; first, the electric push rod II 305 provides power to drive the connecting block 308 to move, and the connecting block 308 drives the push plate 301 and the connecting plate 307 to move, and at the same time, the connecting plate 307 drives the connecting rod 306 to rotate, so that the push plate 301 and the connecting plate 307 rotate around the rotating shaft of the connecting block 308, thereby opening the push plate 301; the electric push rod I 304 provides power to drive the installation frame 302 to move, and the installation frame 302 drives the push plate 301 to move forward through the connecting rod 306 and the connecting plate 307, thereby pushing the material in the discharge channel 2 to move forward; then, in the process of the electric push rod I 304 driving the push plate 301 to return, the electric push rod II 305 drives the push plate 301 to rotate through the connecting block 308, the connecting plate 307, and the connecting rod 306, so that the push plate 301 moves closer to the middle, thereby preventing the push plate 301 from bringing the material back.

[0058] The pushing plate 301 is provided with a scraping mechanism 309; the scraping mechanism 309 includes a mounting plate 3091, an electric push rod III 3092, a lead screw I 3093, a motor I 3094, a scraper 3095, a water inlet pipe 3096, and a spray head 3097; an inclined groove 3011 is provided at the top of the pushing plate 301, and the bottom of the mounting plate 3091 is inclined and corresponds to the inclined groove 3011; the electric push rod III 3092 is fixed on the pushing plate 301, and the output end is connected to the mounting plate 3091; a mounting groove 30911 is provided at the bottom of the mounting plate 3091, and both ends of the lead screw I 3093 are rotatably connected inside the mounting groove 30911 through bearings, the motor I 3094 is fixed at the end of the mounting groove 30911, and the output end is connected to one end of the lead screw I 3093; the scraper 3095 is connected to the lead screw I 3093 by a thread, and the side wall of the scraper 3095 is in contact with the surface of the pushing plate 301; the water inlet pipe 3096 is fixed inside the mounting plate 3091 on one side of the lead screw I 3093, one end of the spray head 3097 is connected to the water inlet pipe 3096, and the other end passes through the mounting plate 3091; the electric push rod III 3092 provides power to drive the mounting plate 3091 to move, so that the mounting plate 3091 moves away from the pushing plate 301; the motor I 3094 provides power to drive the lead screw I 3093 to rotate, and the lead screw I 3093 drives the scraper 3095 to move along the mounting groove 30911 through the thread, so that the scraper 3095 scrapes the materials on the surface of the pushing plate 301; preventing the materials from caking; at the same time, the flushing water enters through the water inlet pipe 3096 and is sprayed onto the pushing plate 301 through the spray head 3097, which can improve the cleaning efficiency of the pushing plate 301.

[0059] The bottom of the pushing plate 301 is provided with a telescopic plate 3012, the top of the telescopic plate 3012 is connected to the guide shaft 3013, a spring 3014 is provided outside the guide shaft 3013, and the spring 3014 is fixed at the top of the telescopic plate 3012 and inside the pushing plate 301; a baffle 3015 is located below the pushing plate 301; the electric push rod VIII 3016 is fixed on the pushing plate 301, and the output end is connected to the baffle 3015; when cleaning the discharge channel 2, the electric push rod I 304 drives the pushing plate 301 to move through the mounting frame 302, so as to clean the discharge channel 2 through the pushing plate 301; when moving to the position of the inclined plate, the electric push rod VIII 3016 provides power to drive the baffle 3015 to move, and the telescopic plate 3012 moves downward under the action of the spring 3014, so that the bottom of the telescopic plate 3012 is in contact with the surface of the inclined plate, so as to be able to clean the inclined plate; and the spring 3014 can ensure that the bottom of the telescopic plate 3012 is always in contact with the inclined plate.

[0060] The paving mechanism 5 includes a frame 501, a paving plate 502, a leveling plate 503, an electric push rod IV 504, a threaded rod 505, a motor II 506, a guide rod 507, and a convex plate 508. The frame 501 is connected to the machine frame 1. The paving plate 502 is movably connected to one end of the frame 501 away from the machine frame 1. The convex plate 508 is fixed on the side wall of the frame 501. The threaded rod 505 is rotatably connected to the convex plate 508 through a bearing. The guide rod 507 is fixed on the convex plate 508 symmetric to the threaded rod 505. The motor II 506 is fixed on the convex plate 508, and its output end is connected to one end of the threaded rod 505. Both ends of the paving plate 502 are respectively connected to the threaded rod 505 and the guide rod 507. The leveling plate 503 is rotatably connected to the bottom of the paving plate 502 through a rotating shaft. The electric push rod IV 504 is connected to the side wall of the paving plate 502, and its output end is connected to the leveling plate 503. The motor II 506 provides power to drive the threaded rod 505 to rotate. The threaded rod 505 drives the paving plate 502 to move along the guide rod 507 through the thread, so that the thickness of the paved roadbed can be adjusted. During the paving process, the electric push rod IV 504 provides power to drive the leveling plate 503 to rotate around the rotating shaft, so that the leveling plate 503 can be adjusted to a horizontal state, and the leveling plate 503 can level the paved roadbed.

[0061] The mixing mechanism 4 includes a rotating shaft 401, a spiral blade 402, a mixing rod 403, a motor III 404, a movable plate 407, and a support rod 408. A square groove 5011 is provided on the side wall of the frame 501. The movable plate 407 is movably connected in the square groove 5011. The rotating shaft 401 is rotatably connected to the movable plate through a bearing. The spiral blade 402 is fixed on the rotating shaft 401. There are several mixing rods 403, which are evenly fixed on the rotating shaft 401 between the spiral blades 402. The motor III 404 is fixed on the outer side wall of the movable plate 407, and its output end is connected to one end of the rotating shaft 401. The support rod 408 is fixed on the movable plate 407 inside the frame 501. After the material is discharged from the discharge channel 2, the motor III 404 provides power to drive the rotating shaft 401 to rotate. The rotating shaft 401 drives the spiral blade 402 and the mixing rod 403 to rotate, so that the spiral blade 402 and the mixing rod 403 can mix the materials at different layers at the same time, and the materials are evenly mixed.

[0062] A top cover 405 is provided above the mixing mechanism 4. The top cover 405 is obliquely fixed at the end of the discharge channel 2, which can prevent the material from splashing during the mixing process.

[0063] A preloading mechanism 406 is provided on the outer sidewall of the top cover 405; the preloading mechanism 406 includes a preloading plate 4061, a guide rail 4062, a connecting rod 4063, a connecting seat 4064, a connecting arm 4065, an adjusting arm 4066, a cylinder I 4067, and a cylinder II 4068; the guide rail 4062 is fixed on the sidewall of the frame 501, one end of the connecting rod 4063 is movably connected inside the guide rail 4062, and the preloading plate 4061 is fixed at the end of the connecting rod 4063 away from the guide rail 4062; a guide groove 40611 is provided on the top of the preloading plate 4061; the connecting seat 4064 is fixed on the sidewall of the top cover 405, the connecting arm 4065 is rotatably connected to the connecting seat 4064 through a rotating shaft, one end of the adjusting arm 4066 is rotatably connected to the end of the connecting arm 4065 away from the connecting seat 4064 through a rotating shaft, and the other end is connected to the preloading plate 4061 through a movable seat, the cylinder I 4067 is rotatably connected to the connecting seat 4064 and the connecting arm 4065, and the cylinder II 4068 is connected to the connecting arm 4065 and the adjusting arm 4066; one end of the support rod 408 away from the movable plate 407 is connected to the preloading plate 4061; during the downward pressing process of the preloading mechanism 406, the rotating shaft 401, the spiral blade 402, and the mixing rod 403 can be driven to move along the square groove 5011 through the support rod 408 and the movable plate 407, so that the spiral blade 402 and the mixing rod 403 mix the material up and down, making the material mixing more uniform; after mixing, the mixing mechanism 4 moves along with the discharge channel 2 to mix the material discharged from the discharge channel 2, and at the same time, the preloading mechanism 406 can preload the mixed material; by driving the connecting arm 4065 and the adjusting arm 4066 to rotate through the cylinder I 4067 and the cylinder II 4068, the connecting arm 4065 and the adjusting arm 4066 drive the preloading plate 4061 to move along the guide rail 4062, so that the preloading plate 4061 preloads the material; the preloaded material is discharged through the paving mechanism 5 and is paved and leveled, so as to realize the recycling of construction solid waste.

[0064] Example 2: Different from Example 1; the raw material ratio is construction solid waste aggregate: coal gangue: cement = 5:4:1; adding stabilizers to the raw materials: adding 4% fly ash to enhance the compressive strength and inhibit the weathering of coal gangue; adding 0.4% organic modifier polyacrylamide; improving the anti-seepage performance;

[0065] The specific steps of the treatment method for the recycled filling material with the ratio of construction solid waste to coal gangue are as follows:

[0066] 1) Primary crushing: The construction solid waste and coal gangue are respectively crushed by a jaw crusher to a particle size of 0 - 300 mm;

[0067] 5) Screening: 3 - layer multi-layer circular vibrating screen; the particle size of the screened aggregate is: coarse aggregate: 20 - 40 mm; fine aggregate: 5 - 20 mm; powder: 0 - 5 mm;

[0068] 6) Gradation optimization: Adjust the proportion of different particle sizes. The coarse aggregate of 20 - 40 mm is 60%, the fine aggregate of 5 - 20 mm is 20%, and the powder of 0 - 5 is 8%.

[0069] Example 3: Different from Example 1, the raw material ratio is construction solid waste aggregate: coal gangue: cement = 4:5:1; The stabilizer is admixed into the raw materials: 5% fly ash is added to enhance the compressive strength and inhibit the weathering of coal gangue; 0.5% organic modifier polyacrylamide is added; To improve the anti-seepage performance.

[0070] The specific steps of the treatment method of the recycled filling material with the ratio of construction solid waste and coal gangue are as follows:

[0071] 1) Primary crushing: The construction solid waste and coal gangue are respectively crushed by a jaw crusher to a particle size of 0 - 300 mm.

[0072] 5) Screening: 3 - layer multi-layer circular vibrating screen; The particle size of the aggregate after screening is: coarse aggregate: 20 - 40 mm; fine aggregate: 5 - 20 mm; powder: 0 - 5 mm.

[0073] 6) Gradation optimization: Adjust the proportion of different particle sizes. The coarse aggregate of 20 - 40 mm is 70%, the fine aggregate of 5 - 20 mm is 15%, and the powder of 0 - 5 is 5%.

[0074] Comparative example: According to the retrieval publication number CN116120033A, a subgrade filler based on construction waste, its preparation method and subgrade filling method;

[0075] According to GB50123 - 2019 "Standard for Geotechnical Test Methods", the recycled filling materials produced in the above examples and comparative examples are tested. The test results are shown in the following table:

[0076] Construction solid waste aggregate: coal gangue: cement Settlement rate (mm / year) CBR value (%) Cost (yuan / m³) Conclusion Example 1 6:3:1 5 25 50 Qualified Example 2 5:4:1 6 20 60 Qualified Example 3 4:5:1 7 15 70 Qualified Comparative example Only adding construction solid waste 8 10 80 Qualified

[0077] According to the above conclusion, the subgrade performance of the filling material produced by the method of Example 1 is better.

[0078] The above content is only an example and illustration of the structure of the present invention. Those skilled in the art of the present technology make various modifications or supplements or use similar methods to replace the specific embodiments described. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.

Claims

1. Building solid waste and coal gangue proportioning recycling device, characterized in that It includes a frame, a discharging channel, a material pushing and cleaning mechanism, a mixing mechanism, and a paving mechanism; a moving wheel is provided at the bottom of the frame; there are several discharging channels, and the height of the discharging channels is installed according to the proportion of the materials; the discharging channels are stacked on the frame, a feeding port is provided on the side wall of the discharging channel, and an inclined plate is provided at one end of the discharging channel; the material pushing and cleaning mechanism is installed inside the discharging channel; the mixing mechanism is located at the end of the discharging channel, and the paving mechanism is located at one side of the mixing mechanism; The material pushing and cleaning mechanism includes a pushing plate, a mounting frame, a fixing plate, an electric push rod I, an electric push rod II, a connecting rod, a connecting plate, and a connecting block; a pair of pushing plates are provided and are V-shaped, and the height of the pushing plates is consistent with the height of the discharging channel; The fixed plate is fixed to one end of the discharging channel away from the discharging port, and the electric push rod I is fixed to the fixed plate; the mounting frame is connected to the output end of the electric push rod I, the electric push rod II is fixed to the side wall of the mounting frame, and a clearance groove is provided on the fixed plate; the connecting rod is rotatably connected to the mounting frame through a rotating shaft, one end of the connecting plate is rotatably connected to the end of the connecting rod away from the mounting frame through the rotating shaft, and the other end is fixed to the side wall of the push plate; the connecting block is rotatably connected to the push plate through the rotating shaft, and is connected to the output end of the electric push rod II.

2. The device for recycling building solid waste and gangue by proportioning according to claim 1, wherein The push plate is provided with a scraping mechanism, which includes a mounting plate, an electric push rod III, a lead screw I, a motor I, a scraper, a water inlet pipe, and a nozzle; an inclined groove is provided on the top of the push plate, and the bottom of the mounting plate is set to be inclined and corresponding to the inclined groove; the electric push rod III is fixed on the push plate, and the output end is connected to the mounting plate; a mounting groove is provided at the bottom of the mounting plate, and both ends of the lead screw I are rotatably connected inside the mounting groove through bearings, and the motor I is fixed at the end of the mounting groove, and the output end is connected to one end of the lead screw I; the scraper is connected to the lead screw I through a thread, and the side wall of the scraper is in contact with the surface of the push plate; The water inlet pipe is fixed inside the mounting plate on one side of the lead screw I, one end of the nozzle is connected to the water inlet pipe, and the other end passes through the mounting plate.

3. The device for recycling and utilization of the mixture ratio of construction solid waste and coal gangue according to claim 1, characterized in that A telescopic plate is provided at the bottom of the push plate, the top of the telescopic plate is connected to the guide shaft, a spring is provided on the outside of the guide shaft, and the spring is fixed on the top of the telescopic plate and inside the push plate; the baffle is located below the push plate; the electric push rod III is fixed on the push plate, and the output end is connected to the baffle.

4. The device and method for proportioning and recycling construction solid waste and gangue according to claim 1 are characterized in that The paving mechanism includes a frame, a paving plate, a leveling plate, an electric push rod IV, a threaded rod, a motor II, a guide rod, and a convex plate; the frame is connected to the frame, the paving plate is movably connected to the end of the frame away from the frame, the convex plate is fixed to the side wall of the frame, the threaded rod is rotatably connected to the convex plate through a bearing, and the guide rod is fixed to the convex plate symmetrical to the threaded rod; motor II is fixed to the convex plate, and the output end is connected to one end of the threaded rod; the two ends of the paving plate are respectively connected to the threaded rod and the guide rod, the leveling plate is rotatably connected to the bottom of the paving plate through a rotating shaft, the electric push rod IV is connected to the side wall of the paving plate, and the output end is connected to the leveling plate.

5. The device for proportionally recycling construction solid waste and gangue according to claim 1, wherein The mixing mechanism includes a rotating shaft, spiral blades, mixing rods, motor III, a movable plate, and a support rod; a square groove is provided on the side wall of the frame; the movable plate is movably connected within the square groove, and the rotating shaft is rotatably connected to the paving mechanism through a bearing; the spiral blades are fixed on the rotating shaft, several mixing rods are provided, and are evenly fixed on the rotating shaft between the spiral blades; motor III is fixed on the outer side wall of the movable plate, and the output end is connected to one end of the rotating shaft; the support rod is fixed on the movable plate inside the frame.

6. The device for proportionally recycling construction solid waste and gangue according to claim 5, characterized in that A top cover is provided above the mixing mechanism, and the top cover is obliquely fixed at the end of the discharge channel.

7. The device for proportionally recycling construction solid waste and gangue according to claim 5, characterized in that A pre-pressing mechanism is provided on the outer side wall of the top cover; the pre-pressing mechanism includes a pre-pressing plate, a guide rail, a connecting rod, a connecting seat, a connecting arm, an adjusting arm, oil cylinder I, and oil cylinder II; the guide rail is fixed on the side wall of the frame, one end of the connecting rod is movably connected inside the guide rail, and the pre-pressing plate is fixed at the end of the connecting rod away from the guide rail; a guide groove is provided on the top of the pre-pressing plate; the connecting seat is fixed on the side wall of the top cover, the connecting arm is rotatably connected to the connecting seat through a rotating shaft, one end of the adjusting arm is rotatably connected to the end of the connecting arm away from the connecting seat through a rotating shaft, and the other end is connected to the pre-pressing plate through a movable seat, oil cylinder I is rotatably connected to the connecting seat and the connecting arm, and oil cylinder II is connected to the connecting arm and the adjusting arm; one end of the support rod away from the movable plate is connected to the pre-pressing plate.

8. The preparation method of the device for recycling the mixture of construction solid waste and gangue according to claim 1, characterized in that The steps of the preparation method are as follows: 1) Primary crushing: The construction solid waste and coal gangue are respectively crushed by a jaw crusher to a particle size of 0 - 300 mm. 2) Magnetic separation: Remove steel bars and metal parts. 3) Secondary crushing: The construction solid waste and coal gangue are respectively subjected to secondary crushing by a counterattack crusher. 4) Pneumatic separation and impurity removal: Remove light impurities such as wood and plastic. 5) Screening: 3 - 5 layers of multi-layer circular vibrating screens; the particle size of the screened aggregates is: coarse aggregates: 20 - 40 mm; fine aggregates: 5 - 20 mm; Powder materials: 0 - 5 mm; 6) Gradation optimization: Adjust the proportion of different particle sizes, with coarse aggregates being 50% - 70%, fine aggregates being 15% - 25%, and powder materials being 5% - 10%. 7) Mixing ratio: The raw materials are transported into the storage box according to the ratio, and then enter the corresponding discharge channels respectively. The raw materials are discharged through the pushing and cleaning mechanism inside the discharge channels and stacked together. 8) Mixing: The materials are mixed by the mixing mechanism, and the mixed materials are pre-pressed and leveled by the pre-pressing mechanism. 9) Paving: The mixed materials are paved by the paving mechanism.

9. The preparation method of the device for recycling the mixture of construction solid waste and gangue according to claim 8, characterized in that In step 7), the raw material mixing ratio is construction solid waste aggregate: coal gangue: cement = 6:3:1 - 4:5:1; a stabilizer is admixed into the raw materials: 3% - 5% of fly ash is added to enhance the compressive strength and inhibit the weathering of coal gangue; 0.3% - 0.5% of the organic modifier polyacrylamide is added to improve the anti-seepage performance.

10. The preparation method of the device for recycling the mixture of construction solid waste and gangue according to claim 9, characterized in that The construction solid waste aggregate includes broken bricks and tiles, concrete, and waste mortar.

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