An assembled mud-sand separation production device and a production method thereof

Abstract

The application discloses an assembled mud-sand separation production equipment and a production method thereof. The assembled mud-sand separation production equipment comprises a drum screen, a collecting hopper, a vibrating screen, a finished sand conveying belt, a water circulation device, a water circulation control system, a mud-sand separation control system, the drum screen is located above the collecting hopper, the drum screen and the collecting hopper are arranged in the same direction and are inclined, the discharge end of the drum screen is located at the low end, one end of the collecting pipe of the collecting hopper is opposite to the discharge port of the drum screen, the collecting pipe is connected with the vibrating screen in transmission, the finished sand conveying belt is located behind the vibrating screen, the water circulation device is connected with the drum screen, the collecting hopper and the vibrating screen through pipelines, the water circulation control system is connected with the water circulation system control, and the mud-sand separation control system is connected with the drum screen, the collecting hopper, the vibrating screen and the finished sand conveying belt respectively. The mud-sand separation process is highly integrated, and is suitable for normal use in a narrow space.

Description

Technical Field

[0001] This invention belongs to the field of construction waste resource utilization, and in particular relates to a prefabricated mud and sand separation production equipment and its production method. Background Technology

[0002] Currently, a mud-sand separation system with an annual output of 800,000 tons of finished sand requires two feeders, two grinding mills, two vibrating screens, one grading vibrating screen, one sand washing machine, one dewatering machine, two fine sand recovery machines, one mud filter press, and one mud storage tower. Including supporting utilities, auxiliary facilities, and environmental protection works, the entire system, from the feeding equipment to the finished sand outlet, occupies approximately 1200 square meters of land. 2 For some construction projects with limited space, the site cannot meet the normal production needs of equipment occupying such a large area. Transporting construction waste off-site will increase construction costs and affect surrounding roads and the living environment. Summary of the Invention

[0003] This invention addresses the technical challenges of traditional mud and sand separation equipment, which occupies a large area and cannot be used normally in confined construction spaces. It proposes a prefabricated mud and sand separation production equipment and its production method.

[0004] This invention provides a prefabricated mud and sand separation production equipment, comprising: a drum screen, a collection hopper, a vibrating screen, a finished sand conveyor belt, a water circulation device, a water circulation control system, and a mud and sand separation control system. The drum screen is located above the collection hopper. Both the drum screen and the collection hopper are inclined in the same direction. The discharge end of the drum screen is located at the lower end. One end of the collection hopper with a collection pipe is opposite to the discharge port of the drum screen. The collection pipe is connected to the vibrating screen. The finished sand conveyor belt is located behind the vibrating screen; the water circulation equipment is connected to the drum screen, the hopper, and the vibrating screen through pipelines; the water circulation control system is connected to the water circulation system control; and the mud and sand separation control system is connected to the drum screen, the hopper, the vibrating screen, and the finished sand conveyor belt respectively.

[0005] Furthermore, the collecting pipe is connected to the vibrating screen via a spiral device, which includes a spiral support shaft and a spiral actuator, with the spiral actuator located on the spiral support shaft.

[0006] Furthermore, the collecting pipe is connected to the vibrating screen via a wheel device, which includes an impeller and an impeller support shaft, with the impeller located on the impeller support shaft.

[0007] Furthermore, the collecting pipe is connected to the vibrating screen via a screw device and a wheel device; The spiral device is inclined in the same direction as the drum screen. The spiral device has a feed inlet at its lower end, which is opposite to the collecting pipe. The spiral device has a discharge outlet at its upper end, which is opposite to the feed end of the wheel device.

[0008] Furthermore, the drum screen includes: a mud and sand feed inlet, a distribution zone, an optimization zone, a screening zone, a tailings zone, a discharge outlet, and a cleaning pipe. The drum screen includes an inner layer and an outer layer. The inner layer has a mesh structure and is located in the optimization zone and the screening zone. The outer layer is located in the mud and sand feed inlet, the distribution zone, the optimization zone, the screening zone, and the tailings zone. The outer layer has a sealed structure in the mud and sand feed inlet, the distribution zone, the optimization zone, and the tailings zone, and a mesh structure in the screening zone. The cleaning pipe includes: a main water supply pipe, a branch water supply pipe, and a nozzle. The nozzle is located on the branch water supply pipe. The mud and sand feed inlet is connected to the distribution zone. The distribution zone is connected to the optimization zone. The optimization zone is connected to the screening zone. The screening zone is connected to the tailings zone. The tailings zone is connected to the discharge outlet.

[0009] Furthermore, the main water supply pipe of the cleaning pipe is located in the middle of the drum screen, and the distribution area, optimization area and screening area are equipped with the distribution water supply pipe; The material distribution area includes: a spiral distributor, a water distribution pipe, and a nozzle, wherein the water distribution pipe is located on the spiral distributor; The optimization zone includes: an optimizer, an optimization ball, a water distribution pipe, and a nozzle; the optimizer is located between the inner and outer layers of the drum screen; the optimization ball is located on the inner layer of the drum screen; the optimizer is a magnet, and the optimization ball is a steel ball with a diameter of 10mm to 30mm; the water distribution pipe is located outside the optimizer.

[0010] Furthermore, the screening section includes: a snap-on screen, a water distribution pipe, and a nozzle, wherein the snap-on screen is located on the inner layer of the drum screen, and the water distribution pipe is located above the snap-on screen.

[0011] Furthermore, the snap-on screen includes: a snap fastener, a snap fastener cap, a snap-on screen, and a screen protection frame. The snap fastener cap is a hemispherical helmet-shaped nut, and the screen protection frame is a 10mm diameter threaded steel bar protection frame. The snap fastener is located in the snap fastener cap, and the snap fastener cap is threadedly connected to the inner layer of the drum screen. The snap-on screen and the screen protection frame are connected to the inner layer of the drum screen through the snap fastener and the snap fastener cap. The screen protection frame is stacked on top of the snap-on screen.

[0012] Furthermore, the collecting hopper includes: a collecting shell, a collecting water pipe, a collecting nozzle, and a collecting pipe. The collecting shell is located below the material separation area, optimization area, screening area, and tailings area of ​​the drum screen. The collecting water pipe is connected to the main water pipe of the drum screen. The collecting nozzle is located on the collecting water pipe, and the collecting pipe is located above the screw device.

[0013] The present invention also provides a production method for a prefabricated mud and sand separation production equipment, the mud and sand separation production method comprising the following steps: S1. The mud and sand separated from the engineering waste are conveyed to the drum screen by the conveyor belt. The drum screen is controlled by the mud and sand separation control system so that the mud and sand pass through the material distribution area, optimization area, screening area and tailing area of ​​the drum screen in sequence. After the initial mud and sand separation, optimization and screening, the sand falls into the collection hopper in the screening area. The mud and sand with a particle size greater than 5mm is discharged from the drum screen through the discharge port of the tailing area. S2. The mud and sand falling into the collection hopper are washed and then sent to the vibrating screen. S3. The sand after passing through the vibrating screen is conveyed to the finished sand storage area by the finished sand conveyor belt. The finished sand has a fineness modulus of 2.0 to 3.6, a mud content of 0.5% to 2.9%, and a crushing index of 5% to 26%.

[0014] This invention utilizes prefabricated mud and sand separation production equipment, optimizing the layout of the mud and sand separation equipment to achieve a footprint of only 660m². 2 It promotes efficient and high-quality recycling of water resources; effectively improves the level of mud and sand separation technology, significantly reduces labor costs, and effectively improves the quality of finished sand produced from mud and sand separation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the layout of a prefabricated mud and sand separation production equipment.

[0016] Figure 2 This is a schematic diagram of a prefabricated mud and sand separation production equipment.

[0017] Figure 3 This is a schematic diagram of a drum screen for a prefabricated mud and sand separation production equipment.

[0018] Figure 4 This is a schematic diagram of the optimization zone of a prefabricated mud and sand separation production equipment.

[0019] Figure 5 This is a schematic diagram of the screening section of a prefabricated mud and sand separation production equipment.

[0020] Figure 6 This is a schematic diagram of a prefabricated mud and sand separation production equipment, including a spiral device, a wheel device, a fine sand recovery device, and a vibrating screen.

[0021] Figure 7 This is a schematic diagram of a belt vacuum filter and a diaphragm filter press for a prefabricated mud and sand separation production equipment.

[0022] Figure 8 This is a schematic diagram of a mega-sonic cleaning machine for the filter screen of a prefabricated mud and sand separation production equipment.

[0023] In the diagram: 1. Rotary drum screen; 2. Collection hopper; 3. Screw conveyor; 4. Wheel device; 5. Vibrating screen; 6. Fine sand recovery equipment; 7. Finished sand conveyor belt; 8. Water circulation equipment; 9. Water circulation control system; 10. Mud and sand separation control system; 11. Control room; 12. Mud and sand inlet; 13. Material distribution area; 14. Optimization area; 15. Screening area; 16. Tailings area; 17. Discharge port; 18. Washing pipe; 19. Inner layer 20. Outer layer; 21. Main water supply pipe; 22. Branch water supply pipe; 23. Nozzle; 24. Spiral distributor; 25. Optimizer; 26. Optimizing ball; 27. Clip-on screen; 28. Clip; 29. ​​Clip cap; 30. Clip-on screen; 31. Screen protection frame; 32. Collector shell; 33. Collector water supply pipe; 34. Collector nozzle; 35. Collector pipe; 36. Spiral; 37. Spiral support shaft; 38. Spiral water supply. 39. Pipe; 40. Spiral nozzle; 41. Trough; 42. Impeller; 43. Impeller support shaft; 44. Wheel-type water conveying pipe; 45. Wheel nozzle; 46. Wheel groove; 47. Vibrating screen; 48. Vibrator; 49. Vibrating water conveying pipe; 50. Vibrating nozzle; 51. Megasonic particle separator; 52. Hydrocyclone; 53. Microwave screening equipment; 54. Water source; 55. Clear water room; 56. Wastewater room; 57. Flocculant room; 58. Slurry storage tower; 59. Filter press; 60. Belt vacuum filter; 61. Diaphragm filter press; 62. Slurry inlet; 63. Filtration device; 64. Conveyor filter belt; 65. Vacuum chamber; 66. Drive motor; 67. Filter residue outlet; 68. Filtrate outlet; 69. Filter screen; 70. Filter frame; 71. Filter screen ultrasonic cleaner; 72. Triangular prism filter screen; 73. Triangular prism filter support; 74. Filter support cover. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0026] like Figure 1 and Figure 2As shown, a prefabricated mud and sand separation production equipment is provided, comprising: a drum screen 1, a collection hopper 2, a vibrating screen 5, a finished sand conveyor belt 7, a water circulation device 8, a water circulation control system 9, and a mud and sand separation control system 10. The drum screen 1 is located above the hopper 2. The drum screen 1 and the hopper 2 are both inclined in the same direction. The discharge end of the drum screen 1 is located at the lower end. One end of the hopper 2 with the collecting pipe 35 is opposite to the discharge port 17 of the drum screen 1. The collecting pipe 35 is connected to the vibrating screen 5. The finished sand conveyor belt 7 is located behind the vibrating screen 5; the water circulation equipment 8 is connected to the drum screen 1, the collection hopper 2, and the vibrating screen 5 through pipelines; the water circulation control system 9 is connected to the water circulation system control; and the mud and sand separation control system 10 is connected to the drum screen 1, the collection hopper 2, the vibrating screen 5, and the finished sand conveyor belt 7 respectively.

[0027] This invention reduces the footprint of the mud and sand separation equipment by utilizing vertical space. From top to bottom, a drum screen 1, a collection hopper 2, and a screw conveyor 3 are placed sequentially. Horizontally, the screw conveyor 3, a wheel device 4, and a vibrating screen 5 are arranged sequentially. The entire system occupies only 660m². 2 At the same time, it can achieve an annual production of 8.7 million to 10.2 million tons of finished sand.

[0028] Optionally, the collecting pipe 35 is connected to the vibrating screen 5 via a screw device 3, the screw device 3 including a screw support shaft 37 and a screw 36, the screw 36 being located on the screw support shaft 37.

[0029] like Figure 6 As shown, the spiral device 3 includes: a spiral auger 36, a spiral support shaft 37, a spiral water supply pipe 38, a spiral nozzle 39, and a trough 40. The spiral auger 36 is located on the spiral support shaft 37. The spiral water supply pipe 38 is connected to the main water supply pipe 21 of the drum screen 1 and is located inside the spiral support shaft 37. The spiral nozzle 39 is located outside the spiral support shaft 37 and is located on the spiral water supply pipe 38. The spiral auger 36 and the spiral support shaft 37 are located inside the trough 40. By setting the spiral water supply pipe 38 inside the spiral support shaft 37 and connecting the spiral nozzle 39 to the spiral water supply pipe 38, the drum screen 1 further separates mud and sand, effectively improving the separation efficiency of the drum screen 1 and providing process support for reducing the mud content in the sand.

[0030] Optionally, as shown in the figure, the collecting pipe 35 is connected to the vibrating screen 5 via a wheel device 4, which includes an impeller 41 and an impeller support shaft 42, with the impeller 41 located on the impeller support shaft 42.

[0031] like Figure 6 As shown, the wheel-type device 4 includes: an impeller 41, an impeller support shaft 42, a wheel-type water delivery pipe 43, a wheel-type nozzle 44, and a wheel groove 45. The impeller 41 is located on the impeller support shaft 42. The wheel-type water delivery pipe 43 is connected to the main water delivery pipe 21 of the drum screen 1. The wheel-type water delivery pipe 43 is located inside the impeller support shaft 42. The wheel-type nozzle 44 is located on the wheel-type water delivery pipe 43 and faces the inside of the impeller 41. By setting the wheel-type water delivery pipe 43 inside the impeller support shaft 42 and connecting it with the wheel-type nozzle 44, the mud-sand separation efficiency of the drum screen 1 is effectively improved, providing process support for reducing the mud content in the sand.

[0032] Optionally, the collecting pipe 35 is connected to the vibrating screen 5 via a screw device 3 and a wheel device 4; The spiral device 3 is inclined in the same direction as the drum screen 1. The spiral device 3 has a feed inlet at its lower end, which is opposite to the collecting pipe 35. The spiral device 3 has a discharge outlet 17 at its upper end, which is opposite to the feed end of the wheel device 4.

[0033] Specifically, the drum screen 1 is located above the collecting hopper 2, the collecting hopper 2 is located above the screw conveyor 3, the wheel device 4 is located behind the screw conveyor 3, the vibrating screen 5 is located behind the wheel device 4, the finished sand conveyor belt 7 is located behind the vibrating screen 5, the fine sand recovery device 6 is located above the screw conveyor 3 and the wheel device 4, and the water circulation device 8 is connected to the drum screen 1, collecting hopper 2, screw conveyor 3, wheel device 4, vibrating screen 5, and fine sand recovery device 6 via pipelines. The water circulation control system 9 and the mud and sand separation control system 10 are located in the control room 11. By utilizing vertical space to reduce the footprint of the mud and sand separation equipment, the drum screen 1, collecting hopper 2, and screw conveyor 3 are placed sequentially from top to bottom, and the screw conveyor 3, wheel device 4, and vibrating screen 5 are arranged sequentially in the horizontal direction. The entire set of equipment occupies only 660m². 2 At the same time, it can achieve an annual production of 8.7 million to 10.2 million tons of finished sand.

[0034] like Figure 3 , Figure 4 and Figure 5As shown, the drum screen 1 of the mud and sand separation equipment includes: a mud and sand inlet 12, a material distribution zone 13, an optimization zone 14, a screening zone 15, a tailings zone 16, a discharge outlet 17, and a washing pipe 18. The drum screen 1 includes: an inner layer 19 and an outer layer 20. The inner layer 19 has a mesh structure and is located in the optimization zone 14 and the screening zone 15. The outer layer 20 is located in the mud and sand inlet 12, the material distribution zone 13, the optimization zone 14, the screening zone 15, and the tailings zone 16. The outer layer 20 has a sealed structure in the mud and sand inlet 12, the material distribution zone 13, the optimization zone 14, and the tailings zone 16, and a mesh structure in the screening zone 15. The washing pipe 18 includes: a main water supply pipe 21. The system consists of a water distribution pipe 22 and a nozzle 23, with the nozzle 23 located on the water distribution pipe 22. The mud and sand inlet 12 is connected to the material distribution zone 13, which is connected to the optimization zone 14. The optimization zone 14 is connected to the screening zone 15, which is connected to the tailings zone 16, which is connected to the outlet 17. The main water supply pipe 21 of the cleaning pipe 18 is located in the middle of the drum screen 1. The water distribution pipe 22 is located between the material distribution zone 13, the optimization zone 14, and the screening zone 15. The system utilizes the drum screen 1 to gradually disperse, optimize, and screen the mud and sand during rotation, discharging coarse particles larger than 5mm from the drum screen 1. Simultaneously, the cleaning pipe 18 further processes the mud and sand. The secondary separation not only optimizes the mud-sand separation process but also organically integrates various processes, significantly optimizing the particle size distribution of the sand while reducing its mud content. The distribution zone 13 includes a spiral distributor 24, a water distribution pipe 22, and nozzles 23. The water distribution pipe 22 is located on the spiral distributor 24. By adding the water distribution pipe 22 and nozzles 23 to the spiral distributor 24, the mud-sand separation function of the distribution zone 13 is enhanced, making full use of equipment space, improving mud-sand separation efficiency, and effectively reducing the mud content in the finished sand. The optimization zone 14 includes an optimizer 25, optimization balls 26, a water distribution pipe 22, and nozzles 23. The optimizer 25 is located on the drum screen 1. Between the inner layer 19 and the outer layer 20, the optimization ball 26 is located on the inner layer 19 of the drum screen 1. The optimizer 25 is a magnet, and the optimization ball 26 is a steel ball with a diameter of 10mm~30mm. The water distribution pipe 22 is located outside the optimizer 25. By fixing the magnet optimizer 25 on the inner layer 19 of the drum screen 1, when the magnet optimizer 25 rotates to the bottom of the drum screen 1, it attracts the optimization ball 26 and rotates with the drum screen 1 to the top. The optimization ball 26 falls under the action of gravity, crushing the larger particles in the bottom sand, thereby reducing the fineness modulus of the sand. At the same time, it crushes the sand with lower strength, thereby reducing the crushing index of the sand. While optimizing the sand gradation, it increases the firmness of the sand.The screening section 15 includes: a snap-fit ​​screen 27, a water distribution pipe 22, and a nozzle 23. The snap-fit ​​screen 27 is located on the inner layer 19 of the drum screen 1, and the water distribution pipe 22 is located above the snap-fit ​​screen 27. The snap-fit ​​screen 27 includes: a snap 28, a snap cap 29, a snap-fit ​​screen 30, and a screen protection frame 31. The snap cap 29 is a hemispherical helmet-shaped nut, and the screen protection frame 31 is a 10mm diameter threaded steel bar protection frame. The snap 28 is located above the snap cap 28. In section 9, the snap cap 29 is threadedly connected to the inner layer 19 of the drum screen 1. The snap-fit ​​screen 30 and the screen protection frame 31 are connected to the inner layer 19 of the drum screen 1 via snaps 28 and snap cap 29. The screen protection frame 31 is stacked on top of the snap-fit ​​screen 30. By setting the screens inside the drum screen 1 to a snap-fit ​​28 connection, the screen replacement efficiency is improved. At the same time, adding a steel reinforcement protection frame to the snap-fit ​​screen 27 effectively reduces the impact and friction of sand on the screen, thus improving the service life of the screen.

[0035] like Figure 3 As shown, the collecting hopper 2 includes: a collecting shell 32, a collecting water supply pipe 33, a collecting nozzle 34, and a collecting pipe 35. The collecting shell 32 is located below the material distribution area 13, optimization area 14, screening area 15, and tailings area 16 of the drum screen 1. The collecting water supply pipe 33 is connected to the main water supply pipe 21 of the drum screen 1. The collecting nozzle 34 is located on the collecting water supply pipe 33, and the collecting pipe 35 is located above the screw conveyor 3. The addition of the collecting nozzle 34 to the collecting hopper 2 further separates the mud and sand, thereby providing process support for reducing the mud content in the sand.

[0036] like Figure 6 As shown, the vibrating screen 5 includes: a vibrating screen 46, a vibrator 47, a vibrating water supply pipe 48, and a vibrating nozzle 49. The vibrating screen 46 is located above the vibrator 47, and the vibrating water supply pipe 48 is located between the vibrating screen 46 and the vibrator 47. The vibrating water supply pipe 48 is connected to the main water supply pipe 21 of the drum screen 1. The vibrating nozzle 49 is located on the vibrating water supply pipe 48 and faces one side of the vibrating screen 46. The placement of the vibrating water supply pipe 48 and the vibrating nozzle 49 below the vibrating screen 5 not only facilitates the removal of fine sand stuck on the screen but also provides a final cleaning of the sand before discharge, offering process support for reducing the mud content in the sand.

[0037] like Figure 6As shown, the fine sand recovery equipment 6 includes: a megasonic particle separator 50, a hydrocyclone 51, and a microwave screening device 52. The megasonic particle separator 50 is connected to the hydrocyclone 51, and the hydrocyclone 51 is connected to the microwave screening device 52. Through megasonic waves and the hydrocyclone 51, the fine sand separation efficiency and recovery rate are effectively improved, thereby providing process support for sand gradation optimization, while simultaneously increasing the output of washed sand and the resource utilization rate of engineering waste.

[0038] like Figure 1 , Figure 7 and Figure 8 As shown, the water circulation equipment 8 includes: a water source 53, a clear water room 54, a wastewater room 55, a flocculant room 56, a sludge storage tower 57, and a filter press 58. The filter press 58 uses a belt vacuum filter 59 and a diaphragm filter press 60. The belt vacuum filter 59 reduces the amount of flocculant used and improves the filter press efficiency. The belt vacuum filter 59 includes: a sludge inlet 61, a filter device 62, a conveyor belt 63, a vacuum chamber 64, a drive motor 65, and filter residue. The filter has an outlet 66 and a filtrate outlet 67. The conveyor filter belt 63 is a mesh with a mesh aperture of 4.75 mm. The filtration device 62 includes a filter screen 68, a filter frame 69, and a filter screen ultrasonic cleaner 70. The filter screen 68 has a mesh aperture of 0.075 mm. The filter frame 69 includes a triangular prism filter screen 71, a triangular prism filter support 72, and a filter support cover 73. The triangular prism filter screen 71 has a mesh aperture of 0.15 mm. The triangular prism filter screen 71 is located at the triangular prism... Outside the filter support 72, the upper end of the triangular prism filter support 72 is connected to the filter support cover 73, and the lower end of the triangular prism filter support 72 is 5mm away from the upper surface of the filter screen 68. The mud inlet 61 is connected to the filter device 62, which is located on the conveyor belt 63. The conveyor belt 63 is located above the vacuum chamber 64 and is connected to the drive motor 65. The filter residue outlet 66 is located on the conveyor belt 63 and connected to the filter device 62. The filtrate outlet 67 is located below the vacuum chamber 64, the filter screen 68 is located on the conveyor belt 63, the filter screen ultrasonic cleaner 70 is located below the support cover of the filter frame 69, the water source 53 is connected to the clear water room 54, the clear water room 54 is connected to the cleaning pipe 18, the wastewater room 55 is connected to the flocculant room 56, the flocculant room 56 is connected to the sludge storage tower 57, and the sludge storage tower 57 is connected to the filter press chamber 58. By setting the filter frame 69 and the filter screen ultrasonic cleaner 70 on the filter screen 68, and utilizing the fact that the pore size of the triangular prism filter screen 71 on the filter frame 69 is larger than that of the filter screen 68, and the ultrasonic cleaning function of the filter screen 68, the technical problem of sludge clogging the screen due to the small pore size of the filter screen during the sludge-water separation process is effectively avoided.

[0039] A prefabricated mud and sand separation production method, the mud and sand separation production method comprising the following steps: After the engineering waste is separated, the mud and sand are conveyed to the drum screen 1 by a conveyor belt. The drum screen 1 is controlled by the mud and sand separation control system 10 so that the mud and sand pass through the material distribution area 13, optimization area 14, screening area 15 and tailing area 16 of the drum screen 1 in sequence. After the initial mud and sand separation, optimization and screening, the sand falls into the collection hopper 2 in the screening area 15. The mud and sand with a particle size greater than 5mm is discharged from the drum screen 1 through the discharge port 17 of the tailing area 16. The mud and sand falling into the collection hopper 2 are washed and then fall into the screw device 3. After passing through the screw device 3, the mud and sand enter the wheel device 4 under the rotation of the screw 36. After passing through the wheel device 4, the sand enters the vibrating screen 5 under the drive of the impeller 41. The fine sand recovery device 6 separates the fine sand in the mud slurry during the mud and sand separation process and then transports it to the screw device 3 for recovery. After the mud and sand are separated, the mud slurry passes through the water circulation device 8 to separate clean water and mud cake. The clean water continues to be recycled. The sand after passing through the vibrating screen 5 is conveyed to the finished sand storage area via the finished sand conveyor belt 7.

[0040] Optionally, the fineness modulus of the finished sand is 2.0~3.6, the mud content is 0.5%~2.9%, and the crushing index is 5%~26%. The prefabricated mud and sand separation production method makes full use of the vertical space within the equipment's footprint and utilizes the gravitational potential energy of mud, sand, and water for mud and sand separation, significantly improving the mud and sand separation efficiency and ensuring that the produced finished sand meets the requirements for construction sand.

[0041] This invention discloses a prefabricated mud and sand separation production equipment and method. By assembling the mud and sand separation equipment vertically, it effectively utilizes the gravity of mud, sand, and water flow for multi-level separation, significantly reducing the equipment's footprint, optimizing the mud and sand separation process design, and realizing water recycling. It not only produces sand that meets engineering requirements but also innovatively utilizes a vacuum filter for mud treatment, further reducing the cost of the mud and sand separation equipment, improving the integration level of the mud and sand separation equipment, and significantly enhancing the technical level of engineering mud and sand separation equipment, providing technical support for the high-quality development of mud and sand separation equipment.

[0042] Example 1 like Figure 1As shown, engineering waste soil A with a sand content of 75% and a mud content of 20% (5% stone content, sand fineness modulus of 3.1) is separated from the mains waste soil and then conveyed to the prefabricated mud and sand separation production equipment via a conveyor belt. Under the control of the water circulation control system 9 and the mud and sand separation control system 10, the mud and sand pass through the mud and sand inlet 12, the distribution zone 13, the optimization zone 14, the screening zone 15, the tailing zone 16 and the outlet 17 of the drum screen 1 in sequence under the action of rotation and its own weight, thus dispersing, optimizing, screening and separating the mud and sand. Particles larger than 5mm are discharged from the drum screen 1 through the discharge port 17. Particles smaller than 5mm are separated into mud and sand by gravity and water flow, passing through the screening section 15 of the drum screen 1 and sequentially entering the collection hopper 2, screw device 3, wheel device 4, and vibrating screen 5. The mud and sand generated during the separation process are recovered by the fine sand recovery device 6. The finished sand and the recovered fine sand are conveyed to the finished sand stockpiling area by the finished sand conveyor belt 7. At the same time, the mud and sand slurry is separated into clean water and mud cake by the water circulation device 8, and the clean water is recycled. The finished sand separated by the assembled mud and sand separation production equipment and method has a fineness modulus of 2.5, a mud content of 2.1%, and a crushing index of 15%.

[0043] Example 2 like Figure 1 As shown, the engineering waste soil B with a sand content of 60% and a mud content of 25% (stone content of 15% and sand fineness modulus of 3.0) is separated from the mains soil and conveyed to the prefabricated mud and sand separation production equipment via a conveyor belt. Under the control of the water circulation control system 9 and the mud and sand separation control system 10, the mud and sand pass through the mud and sand inlet 12, the distribution zone 13, the optimization zone 14, the screening zone 15, the tailing zone 16 and the outlet 17 of the drum screen 1 in sequence under the action of the rotation of the drum screen 1 and its own weight, thereby dispersing, optimizing, screening and separating the mud and sand. Particles larger than 5mm are discharged from the drum screen 1 through the discharge port 17. Particles smaller than 5mm are separated into mud and sand by gravity and water flow, passing through the screening section 15 of the drum screen 1 and sequentially entering the collection hopper 2, screw device 3, wheel device 4, and vibrating screen 5. The mud and sand generated during the separation process are recovered by the fine sand recovery device 6. The finished sand and the recovered fine sand are conveyed to the finished sand stockpiling area by the finished sand conveyor belt 7. At the same time, the mud and sand slurry is separated into clean water and mud cake by the water circulation device 8, and the clean water is recycled. The finished sand separated by the assembled mud and sand separation production equipment and method has a fineness modulus of 2.9, a mud content of 2.6%, and a crushing index of 25%.

[0044] Example 3 like Figure 1As shown, engineering waste soil C with a sand content of 85% and a mud content of 10% (5% stone content, sand fineness modulus of 2.9) is separated from the mains soil and conveyed to the prefabricated mud and sand separation production equipment via a conveyor belt. Under the control of the water circulation control system 9 and the mud and sand separation control system 10, the mud and sand pass through the mud and sand inlet 12, the distribution zone 13, the optimization zone 14, the screening zone 15, the tailing zone 16 and the outlet 17 of the drum screen 1 in sequence under the action of rotation and its own weight, thus dispersing, optimizing, screening and separating the mud and sand. Particles larger than 5mm are discharged from the drum screen 1 through the discharge port 17. Particles smaller than 5mm are separated into mud and sand by gravity and water flow, passing through the screening section 15 of the drum screen 1 and sequentially entering the collection hopper 2, screw device 3, wheel device 4, and vibrating screen 5. The mud and sand generated during the separation process are recovered by the fine sand recovery device 6. The finished sand and the recovered fine sand are conveyed to the finished sand stockpiling area by the finished sand conveyor belt 7. At the same time, the mud and sand slurry is separated into clean water and mud cake by the water circulation device 8, and the clean water is recycled. The finished sand separated by the assembled mud and sand separation production equipment and method has a fineness modulus of 2.0, a mud content of 1.5%, and a crushing index of 5%.

[0045] By using prefabricated mud-sand separation production equipment and methods, engineering slag with different sand content, mud content and large fineness modulus can be processed to produce finished sand with a fineness modulus of less than 2.9, mud content of less than 2.9% and crushing index of less than 29%. The finished sand produced can meet the needs of mixing plants and engineering sand.

[0046] This invention features a highly integrated design with a small footprint. The installed power is 745-820 kW, and the footprint is only 60m long × 5.5m wide × 18m high. Depending on the amount of construction waste to be processed, it can achieve a capacity of 200-250 t / h, and can be upgraded to achieve a capacity of 600-750 t / h. Its application range is within 15km of construction waste generation sites and within 15km of commercial concrete mixing plants, with the optimal application range being within 1km of construction waste generation sites and within 5km of commercial concrete mixing plants. The equipment is highly integrated, occupies a small area, and is quick and easy to install and disassemble on-site. It utilizes the gravitational potential energy of mud and water flow for mud and sand separation, reducing energy consumption while improving separation efficiency and quality. Furthermore, it employs vacuum filtration technology for intensive mud treatment, significantly reducing the cost of mud treatment equipment, substantially decreasing the footprint of mud treatment equipment, and improving the technical level of mud and sand separation equipment.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading this application specification, they can still modify or make equivalent substitutions to the specific implementation of the present invention, but these modifications or changes do not depart from the protection scope of the pending claims of the present invention.

Claims

1. A prefabricated mud and sand separation production equipment, characterized in that, The assembled mud and sand separation production equipment includes: a drum screen, a collection hopper, a vibrating screen, a finished sand conveyor belt, a water circulation equipment, a water circulation control system, and a mud and sand separation control system. The drum screen includes: a mud and sand inlet, a material distribution zone, an optimization zone, a screening zone, a tailings zone, a discharge outlet, and a cleaning pipe; the drum screen includes: an inner layer and an outer layer, the inner layer having a mesh structure and located in the optimization zone and the screening zone, the outer layer located in the mud and sand inlet, the material distribution zone, the optimization zone, the screening zone, and the tailings zone, the outer layer having a sealed structure in the mud and sand inlet, the material distribution zone, the optimization zone, and the tailings zone, and a mesh structure in the screening zone; the cleaning pipe includes: a main water supply pipe, a branch water supply pipe, and nozzles, the nozzles being located on the branch water supply pipes, the mud and sand inlet being connected to the material distribution zone, the material distribution zone being connected to the optimization zone, the optimization zone being connected to the screening zone, the screening zone being connected to the tailings zone, and the tailings zone being connected to the discharge outlet; The main water supply pipe of the cleaning pipe is located in the middle of the drum screen, and the distribution area, optimization area and screening area are equipped with the distribution water supply pipe; The material distribution area includes: a spiral distributor, a water distribution pipe, and a nozzle, wherein the water distribution pipe is located on the spiral distributor; The optimization zone includes: an optimizer, an optimization ball, a water distribution pipe, and a nozzle; the optimizer is located between the inner and outer layers of the drum screen; the optimization ball is located on the inner layer of the drum screen; the optimizer is a magnet, and the optimization ball is a steel ball with a diameter of 10mm~30mm; the water distribution pipe is located outside the optimizer. The drum screen is located above the hopper, and both the drum screen and the hopper are inclined in the same direction. The discharge end of the drum screen is located at the lower end. One end of the hopper with a collection pipe is opposite to the discharge port of the drum screen, and the collection pipe is connected to the vibrating screen. The finished sand conveyor belt is located behind the vibrating screen; the water circulation equipment is connected to the drum screen, the hopper, and the vibrating screen through pipelines; the water circulation control system is connected to the water circulation system control; and the mud and sand separation control system is connected to the drum screen, the hopper, the vibrating screen, and the finished sand conveyor belt respectively.

2. The prefabricated mud and sand separation production equipment according to claim 1, characterized in that, The collecting pipe is connected to the vibrating screen via a screw device and a wheel device; The spiral device is inclined in the same direction as the drum screen. The spiral device has a feed inlet at its lower end, which is opposite to the collecting pipe. The spiral device has a discharge outlet at its upper end, which is opposite to the feed end of the wheel device.

3. The prefabricated mud and sand separation production equipment according to claim 2, characterized in that, The spiral device includes a spiral support shaft and a spiral actuator, with the spiral actuator located on the spiral support shaft.

4. The prefabricated mud and sand separation production equipment according to claim 2, characterized in that, The wheel-type device includes: an impeller and an impeller support shaft, wherein the impeller is located on the impeller support shaft.

5. The prefabricated mud and sand separation production equipment according to claim 1, characterized in that, The screening section includes: a snap-on screen, a water distribution pipe, and a nozzle. The snap-on screen is located on the inner layer of the drum screen, and the water distribution pipe is located above the snap-on screen.

6. The prefabricated mud and sand separation production equipment according to claim 5, characterized in that, The snap-fit ​​screen includes: a snap fastener, a snap fastener cap, a snap-fit ​​screen, and a screen protection frame. The snap fastener cap is a hemispherical helmet-shaped nut, and the screen protection frame is a 10mm diameter threaded steel bar protection frame. The snap fastener is located in the snap fastener cap, and the snap fastener cap is threadedly connected to the inner layer of the drum screen. The snap-fit ​​screen and the screen protection frame are connected to the inner layer of the drum screen through the snap fastener and the snap fastener cap. The screen protection frame is stacked on top of the snap-fit ​​screen.

7. The prefabricated mud and sand separation production equipment according to claim 2, characterized in that, The collecting hopper includes: a collecting shell, a collecting water pipe, a collecting nozzle, and a collecting pipe. The collecting shell is located below the material separation area, optimization area, screening area, and tailings area of ​​the drum screen. The collecting water pipe is connected to the main water pipe of the drum screen. The collecting nozzle is located on the collecting water pipe, and the collecting pipe is located above the screw device.

8. A production method for a prefabricated mud and sand separation production equipment according to any one of claims 1-7, characterized in that, The mud and sand separation production method includes the following steps: S1. The mud and sand separated from the engineering waste are conveyed to the drum screen by the conveyor belt. The drum screen is controlled by the mud and sand separation control system so that the mud and sand pass through the material distribution area, optimization area, screening area and tailing area of ​​the drum screen in sequence. After the initial mud and sand separation, optimization and screening, the sand falls into the collection hopper in the screening area. The mud and sand with a particle size greater than 5mm is discharged from the drum screen through the discharge port of the tailing area. S2. The mud and sand falling into the collection hopper are washed and then sent to the vibrating screen. S3. The sand after passing through the vibrating screen is conveyed to the finished sand storage area by the finished sand conveyor belt. The finished sand has a fineness modulus of 2.0 to 3.6, a mud content of 0.5% to 2.9%, and a crushing index of 5% to 26%.

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