CN117920721B - Engineering residue soil recycling production equipment and production method thereof - Google Patents

Abstract

The invention discloses an engineering slag soil recycling production device and a production method thereof, wherein the engineering slag soil recycling production device comprises: sand grading optimizing equipment and an intelligent control system; the intelligent control system is in control connection with the sand grading optimization equipment; the sand grading optimization device comprises: the device comprises a megasonic mud remover, microwave air drying equipment, a sand and stone separation sieve, fineness modulus detection equipment and an automatic metering unit; the megasonic mud remover is used for removing mud and slag contained in engineering dregs, drying sand and stones after the mud and slag are removed through microwave air drying equipment, separating the dried sand and stones by using a sand and stone separating screen, measuring the fineness modulus of sand in the engineering dregs through fineness modulus detection equipment and an automatic metering unit, providing technical parameters for producing sand meeting the target fineness modulus, enabling the engineering dregs to be more efficient and intelligent in recycling production, and improving the high value added recycling utilization efficiency of the engineering dregs.

Description

Engineering residue soil recycling production equipment and production method thereof

Technical Field

The invention belongs to the field of resource utilization of construction waste, and particularly relates to resource production equipment and a resource production method of engineering dregs.

Background

Engineering muck (also called building muck, residual mud muck or building residual mud muck) is one of building wastes, and refers to inorganic solid wastes such as waste slag, waste soil, slurry and concretes generated in construction processes such as underground space excavation and site leveling; the slag mainly refers to construction wastes such as concrete blocks, bricks and the like, the soil is undisturbed sub-clay with the plasticity index of about 12 in a construction site, the soil generated in the process of separating and treating the construction wastes is called separating waste soil, and the soil generated in the process of excavating and leveling the site is called engineering produced soil.

The treatment of the engineering dregs in China can be divided into three stages and three treatment modes according to the urban process, wherein the first stage occurs at the beginning of urban treatment and mainly comprises the steps of backfilling engineering and constructing roadbed to consume the engineering dregs; the second stage is a stage of gradually accelerating the urban process, and newly-built, newly-enlarged and removed projects are more and more, and a large amount of engineering dregs cannot be absorbed in a short time in an area, so that the engineering dregs are piled up in the receiving sites such as idle land blocks, mountain ravines, beaches and the like to become a main disposal mode of the engineering dregs in the stage; the third stage occurs in the rapid development period of the urban process, land resources which can be developed on the road are more and more scarce, underground space and infrastructure (underground parking lots, underground shops, subway engineering, underground pipe networks and the like) are increasingly built, at the moment, the amount of engineering slag soil is suddenly increased, and the filling disposal can not meet the requirements of engineering construction and urban development, so that the recycling disposal and application of the engineering slag soil are the main disposal modes of the stage, and are one of effective ways for realizing urban sustainable development.

At present, the main treatment modes of engineering produced soil mainly comprise outward transportation, landfill, mountain piling and landscaping, planting soil, consolidation as road materials, baking-free brick production, sintered brick (ceramsite) production and the like, and the high-efficiency and high-added-value recycling production equipment and method are lacking.

Disclosure of Invention

The invention provides equipment and a method for recycling engineering dregs, aiming at the technical problems of high mud content and unreasonable grading in water-washed sand produced by the existing engineering dregs, and particularly the technical problems of high efficiency and high additional resource utilization of engineering produced soil.

The invention provides engineering residue soil recycling production equipment, which comprises the following steps: sand grading optimizing equipment and an intelligent control system; the intelligent control system is in control connection with the sand grading optimization equipment;

The sand grading optimization device comprises: the device comprises a megasonic mud remover, microwave air drying equipment, a sand and stone separation sieve, fineness modulus detection equipment and an automatic metering unit;

The megasonic mud remover is used for removing mud and slag contained in engineering dregs, drying sand and stones after the mud and slag are removed through microwave air drying equipment, separating the dried sand and stones by using a sand and stone separating screen, measuring the fineness modulus of sand in the engineering dregs through fineness modulus detection equipment and an automatic metering unit, and providing technical parameters for producing sand meeting target fineness modulus.

Further, megasonic desilting ware, microwave air-drying equipment, grit separation sieve, fineness modulus check out test set link to each other in proper order, the grit separation sieve is equipped with automatic measurement unit towards microwave air-drying equipment side.

Further, the fineness modulus detecting device includes: microwave drying equipment, automatic sampling appearance, automatic weighing equipment, automatic screening appearance and test result display, microwave drying equipment with automatic sampling appearance connects, automatic sampling appearance with automatic weighing equipment connects, automatic screening appearance with automatic weighing equipment connects, test result display and intelligent control system connect.

Further, the engineering residue soil recycling production equipment also comprises a screw conveyor;

the megasonic sludge remover is connected with the screw conveyor, the microwave air drying equipment is connected with the megasonic sludge remover, the sand and stone separating screen is connected with the microwave air drying equipment, the fineness modulus detection equipment is connected with the sand and stone separating screen, and the megasonic sludge remover, the microwave air drying equipment and the sand and stone separating screen are all provided with the automatic metering unit;

The fineness modulus of the sand in the engineering slag soil is automatically detected by fineness modulus detection equipment, so that a foundation is provided for sand grading optimization regulation.

Furthermore, the engineering muck recycling production equipment also comprises a feeding equipment, a sand grading optimization equipment, a muck separation equipment, a mud-sand separation equipment, a mud-stone separation equipment and a mud recycling equipment;

The feeding equipment is connected with the muck separation equipment through the feeding regulation and control system, the sand grading optimization equipment is connected with the muck separation equipment, the sand grading optimization equipment is connected with the mud-stone separation equipment and the mud-sand separation equipment through the sand grading optimization control system, the muck separation equipment is connected with the mud-stone separation equipment and the mud-sand separation equipment through the mud-stone conveyor belt and the mud-sand conveyor belt respectively, and the mud recycling equipment is connected with the mud-stone separation equipment and the mud-sand separation equipment through the mud recycling control system.

Further, the sand-stone separator of dregs separation equipment includes: the sand-stone separator comprises a sand-stone separator shell, a sand-stone separator, a flushing nozzle and a slurry guide pipe, wherein the flushing nozzle is positioned inside the sand-stone separator shell and around the sand-stone separator, the slurry guide pipe is positioned at the bottom of the sand-stone separator shell, and the slurry guide pipe is connected with water circulation equipment of slurry recycling equipment.

Further, the mud-sand separation device includes: drum sieve, collecting hopper, spiral silt separator, wheeled silt separator, shale shaker, fine sand recovery plant, fineness modulus check out test set and finished product sand conveyer belt, silt separation apparatus includes: the device comprises a primary liquid nitrogen soaking bin, a primary crushing device, a secondary liquid nitrogen soaking bin, a secondary crushing device, a tertiary liquid nitrogen soaking bin, a tertiary crushing device, a microwave vibrating screen device and a fine powder recovery device.

Further, the primary liquid nitrogen soaking bin is connected with the mudstone conveyor belt, the primary crushing equipment is connected with the primary liquid nitrogen soaking bin, the secondary liquid nitrogen soaking bin is connected with the primary crushing equipment, the secondary crushing equipment is connected with the secondary liquid nitrogen soaking bin, the tertiary liquid nitrogen soaking bin is connected with the secondary crushing equipment, the tertiary crushing equipment is connected with the tertiary liquid nitrogen soaking bin, and the fine powder recovery device is connected with the slurry recycling equipment.

Further, the top parts of the primary liquid nitrogen soaking bin, the secondary liquid nitrogen soaking bin and the tertiary liquid nitrogen soaking bin are respectively provided with the fine powder recovery device, the bottoms of the primary liquid nitrogen soaking bin, the secondary liquid nitrogen soaking bin and the tertiary liquid nitrogen soaking bin are respectively provided with the microwave vibrating screen device and the fine powder recovery device, the tops of the primary crushing device, the secondary crushing device and the tertiary crushing device are respectively provided with the fine powder recovery device, and the bottoms of the primary crushing device, the secondary crushing device and the tertiary crushing device are respectively provided with the microwave vibrating screen device and the fine powder recovery device.

The invention also provides a production method of the engineering residue soil recycling production equipment, which comprises the following steps:

s1, testing fineness modulus of sand in engineering slag soil by using a feeding regulation and control system and a sand grading optimization control system in an intelligent control system;

S2, according to the tested sand fineness modulus and the target fineness modulus, regulating and controlling the conveying speeds of a mud sand conveying belt and a mud stone conveying belt by utilizing a feeding regulation and control system in an intelligent control system, separating out mud sand and mud stone from engineering slag by using a feeding device and a slag separation device, and separating out water washed sand and manufactured machine-made sand by using the mud sand and mud stone respectively;

S3, blending the separated water washed sand and the manufactured machine-made sand into finished sand meeting the target fineness modulus through a finished sand conveyor belt of mud-sand separation equipment;

S4, using a water circulation control system in the intelligent control system to convey the slurry separated by the mud-sand separation equipment and the mud-stone separation equipment in the S2 to a slurry recycling equipment, and producing a recycling product through the slurry recycling control system

According to the invention, by arranging the intelligent control system and the sand grading optimization equipment, the intelligent sand grading optimization of the engineering slag soil is realized, and the resource utilization rate and the utilization value of solid wastes such as the engineering slag soil are further improved.

Drawings

FIG. 1 is a schematic layout diagram of an engineering residue recycling production facility.

FIG. 2 is a schematic diagram of a sand grading optimization device of an engineering residue soil recycling production device.

FIG. 3 is a schematic diagram of an intelligent control system of an engineering muck recycling production facility.

FIG. 4 is a schematic diagram of a fineness modulus detecting device of an engineering residue recycling production device.

FIG. 5 is a schematic diagram of a slag separation device of an engineering slag recycling production device.

FIG. 6 is a schematic diagram of a silt separation apparatus for an engineering muck reclamation production apparatus.

FIG. 7 is a schematic diagram of a trommel screen of an engineering muck recycling production facility.

FIG. 8 is a schematic diagram of an optimized region of an engineering muck recycling production facility.

FIG. 9 is a schematic diagram of a screening zone of an engineering residue recycling production facility.

FIG. 10 is a schematic diagram of a spiral silt separator, a wheel type silt separator, a fine sand recovery apparatus and a vibrating screen of an engineering residue recycling production apparatus.

FIG. 11 is a schematic diagram of a slurry recycling method of an engineering residue recycling apparatus.

In the figure: 1. a feeding device; 2. sand grading optimizing equipment; 3. a slag-soil separation device; 4. a silt separation apparatus; 5. a mudstone separation device; 6. slurry recycling equipment; 7. an intelligent control system; 8. a control room; 9. intelligent unmanned forklift; 10. megasonic desilter; 11. microwave air-drying equipment; 12. sand and stone separating screen; 13. fineness modulus detecting device; 14. an automatic metering unit; 15. feeding a hopper; 16. a screw conveyor; 17. a sand and stone separator; 18. a mudstone conveyor belt; 19. a silt conveyer belt; 20. a drum screen; 21. a collecting hopper; 22. a spiral mud-sand separator; 23. Wheel type mud-sand separator; 24. a vibrating screen; 25. fine sand recovery equipment; 26. a finished sand conveyor belt; 27. primary liquid nitrogen soaking bin; 28. a primary crushing device; 29. a secondary liquid nitrogen soaking bin; 30. a secondary crushing device; 31. three-stage liquid nitrogen soaking bin; 32. three-stage crushing equipment; 33. a microwave vibrating screen device; 34. a fine powder recovery device; 35. a water circulation device; 36. a fluidized solidified soil production device; 37. clay-based recycled aggregate production equipment; 38. road water stable layer mixture production equipment; 39. additive manufacturing production equipment; 40. a feeding regulation system; 41. the sand grading optimization control system; 42. A mud-sand separation system; 43. a mud-rock separation system; 44. a mud recycling control system; 45. a water circulation control system; 46. microwave drying equipment; 47. an automatic sampling device; 48. automatic weighing equipment; 49. an automatic sieving instrument; 50. a test result display; 51. a sand and stone separator housing; 52. a sand separator; 53. flushing the spray head; 54. a mud flow guide pipe; 55. a silt feeding port; 56. a material dividing area; 57. an optimization zone; 58. screening areas; 59. a tailing area; 60. a discharge port; 61. cleaning the tube; 62. an inner layer; 63. an outer layer; 64. a main water pipe; 65. The water distribution pipe; 66. a nozzle; 67. a spiral distributor; 68. an optimizer; 69. optimizing the ball; 70. a snap-in screen; 71. a buckle; 72. a snap cap; 73. a screen is buckled; 74. a screen protective frame; 75. an aggregate housing; 76. a material collecting and water conveying pipe; 77. an aggregate nozzle; 78. a collecting pipe; 79. a screw; 80. a spiral support shaft; 81. a spiral water pipe; 82. a spiral nozzle; 83. a groove bucket; 84. an impeller; 85. an impeller supporting shaft; 86. wheel type water delivery pipe; 87. a wheel nozzle; 88. wheel grooves; 89. vibrating the screen; 90. a vibrator; 91. vibrating the water pipe; 92. vibrating the nozzle; 93. megasonic particle separation screens; 94. a cyclone; 95. a microwave screening device; 96. a sand washing conveyor belt; 97. grading conveyor belt; 98. a machine-made sand conveyor belt; 99. a homogenizing device; 100. a conveyor belt control system; 101. a water source; 102. a clean water house; 103. a sewage house; 104. flocculation medicament room; 105. a mud temporary storage tower; 106. filter pressing; 107. a curing agent bin; 108. an additive bin; 109. a flow state stirrer; 110. a slurry conveying unit; 111. a binder bin; 112. an additive bin; 113. a crushing device; 114. A stirring device; 115. extrusion molding equipment; 116. a clay-based regenerated aggregate bin; 117. aggregate bin; 118. a curing agent bin; 119. an additive bin; 120. a water supply tank; 121. slurry stirring equipment; 122. a mix delivery tube; 123. additive conveying equipment; 124. additive manufacturing apparatus.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

As shown in fig. 2, the engineering residue recycling production apparatus of the embodiment includes: sand grading optimization equipment 2 and an intelligent control system 7; the intelligent control system 7 is in control connection with the sand grading optimization equipment 2;

The sand gradation optimization apparatus 2 includes: the device comprises a megasonic mud remover 10, a microwave air drying device 11, a sand and stone separating screen 12, a fineness modulus detection device 13 and an automatic metering unit 14;

The megasonic mud remover 10 is used for removing mud and slag in engineering dregs, drying sand and stones after removing the mud and slag through a microwave air drying device 11, separating the dried sand and stones by using a sand and stone separating screen 12, measuring the fineness modulus of the sand in the engineering dregs through a fineness modulus detecting device 13 and an automatic measuring unit 14, and providing technical parameters for producing sand meeting a target fineness modulus.

Specifically, the megasonic mud remover 10, the microwave air drying equipment 11, the sand and stone separating screen 12 and the fineness modulus detection equipment 13 are connected in sequence, and the sand and stone separating screen 12 is provided with an automatic metering unit 14 towards the side of the microwave air drying equipment 11.

As shown in fig. 1, 2,3 and 4, the fineness modulus detecting apparatus 13 includes: the automatic weighing system comprises a microwave drying device 46, an automatic sampling device 47, an automatic weighing device 48, an automatic screening device 49 and a test result display 50, wherein the microwave drying device 46 is connected with the automatic sampling device 47, the automatic sampling device 47 is connected with the automatic weighing device 48, the automatic screening device 49 is connected with the automatic weighing device 48, and the test result display 50 is connected with an intelligent control system 7; the megasonic mud remover 10 is connected with the screw conveyor 16, the microwave air-drying equipment 11 is connected with the megasonic mud remover 10, the sand and stone separating screen 12 is connected with the microwave air-drying equipment 11, the fineness modulus detection equipment 13 is connected with the sand and stone separating screen 12, and the megasonic mud remover 10, the microwave air-drying equipment 11 and the sand and stone separating screen 12 are all provided with the automatic metering 14 unit. The fineness modulus of the sand in the engineering slag soil is automatically detected by the fineness modulus detection equipment 13, so that a foundation is provided for sand grading optimization regulation. In addition, by adopting megasonic and microwave technology, the sand fineness modulus test time is shortened, and the production regulation and control of the mud-sand separation equipment 4 and the mud-stone separation equipment 5 can be more efficiently serviced.

According to the sand grading optimization equipment 2 disclosed by the embodiment of the invention, the mud residue in the engineering dregs is efficiently removed through the megasonic mud remover 10, the sand and stones after the mud residue removal are quickly dried through the microwave air drying equipment 11, the dried sand and stones are separated through the sand and stone separating screen 12, the fineness modulus of the sand in the engineering dregs is measured through the fineness modulus detection equipment 13 and the automatic measuring unit 14, and the effective technical parameters are provided for producing the sand meeting the target fineness modulus. According to the sand grading optimization equipment 2, the traditional sand fineness modulus test time is effectively shortened by adopting megasonic and microwave technology, and the engineering slag soil recycling efficiency is effectively improved.

Optionally, the engineering residue recycling production facility further comprises a screw conveyor 16.

The megasonic mud remover 10 is connected with the screw conveyor 16, the microwave air-drying equipment 11 is connected with the megasonic mud remover 10, the sand and stone separating screen 12 is connected with the microwave air-drying equipment 11, the fineness modulus detection equipment 13 is connected with the sand and stone separating screen 12, and the megasonic mud remover 10, the microwave air-drying equipment 11 and the sand and stone separating screen 12 are all provided with the automatic metering unit 14.

According to the embodiment of the invention, the fineness modulus of the sand in the engineering slag soil is automatically detected by the fineness modulus detection equipment 13, so that a foundation is provided for optimizing and controlling the sand grading.

Optionally, as shown in fig. 1, the engineering residue soil recycling production device further includes: the device comprises a feeding device 1, a residue soil separation device 3, a mud and sand separation device 4, a mud and stone separation device 5 and a mud recycling device 6; the feeding device 1 is an intelligent unmanned forklift 9. The engineering dregs are completely applied to the resource chemical engineering through engineering resource equipment, and the site labor cost is greatly reduced and the engineering dregs resource benefit is increased through the intelligent control system 7 and the intelligent unmanned forklift 9.

Optionally, as shown in fig. 1, the residue soil separation apparatus 3 includes: the method comprises the steps of feeding a hopper 15, a screw conveyor 16, a sand-stone separator 17, a mud-stone conveyor belt 18 and a mud-sand conveyor belt 19, rapidly separating engineering slag into mud-stone and mud-sand by a slag-soil separation device 3, and conveying the mud-stone and mud-sand to a mud-stone separation device 5 and a mud-sand separation device 4 by the conveyor belt for recycling; the mud-sand separating apparatus 4 includes: the drum screen 20, the collecting hopper 21, the spiral mud-sand separator 22, the wheel-type mud-sand separator 23, the vibrating screen 24, the fine sand recycling equipment 25, the fineness modulus detection equipment 13 and the finished sand conveyor belt 26 are used for realizing the effective separation of mud and sand through the mud-sand separation equipment 4, the whole set of mud-sand separation equipment 4 adopts modularized high integration, the occupied area is only 350m & lt 2 & gt, and the container-type field assembly is adopted, so that the field installation and debugging time is greatly shortened.

The mud-rock separation apparatus 5 includes: the mud-rock separating device 5 is characterized by comprising a primary liquid nitrogen soaking bin 27, a primary crushing device 28, a secondary liquid nitrogen soaking bin 29, a secondary crushing device 30, a tertiary liquid nitrogen soaking bin 31, a tertiary crushing device 32, a microwave vibrating screen device 33 and a fine powder recovery device 34, wherein the mud-rock separating device 5 is used for realizing the rapid separation of mud-rock and realizing the efficient and low-energy crushing of stones through cold and hot alternation, and in addition, dust generated in stone crushing engineering can be effectively reduced through the microwave vibrating screen and the volatilization of liquid nitrogen, so that the clean production of stone crushing and vibrating screen is realized.

The slurry recycling apparatus 6 includes: the slurry recycling device 6 realizes water resource recycling, fully applies slurry and fine powder generated by the mud-sand separation device 4 and the mud-stone separation device 5 to the fluidized solidified soil, the clay-based recycled aggregate, the road water stable layer mixture and the additive manufacturing production process, and effectively solves the problem of high added value engineering application of slurry in the engineering residue soil treatment process.

Alternatively, as shown in fig. 1 and 3, the intelligent control system 7 includes: a feeding regulation and control system 40, a sand grading optimization control system 41, a mud-sand separation system 42, a mud-stone separation system 43, a mud recycling control system 44 and a water circulation control system 45; the feeding equipment 1 is connected with the muck separation equipment 3 through a feeding regulation and control system 40, the sand grading optimization equipment 2 is connected with the muck separation equipment 3, the sand grading optimization equipment 2 is connected with the mud-stone separation equipment 5 and the mud-sand separation equipment 4 through a sand grading optimization control system 41, the muck separation equipment 3 is respectively connected with the mud-stone separation equipment 5 and the mud-sand separation equipment 4 through a mud-stone conveyor belt 18 and a mud-sand conveyor belt 19, the mud recycling equipment 6 is connected with the mud-stone separation equipment 5 and the mud-sand separation equipment 4 through a mud recycling control system 44, and the intelligent control system 7 is located in the control room 8. The intelligent control system 7 realizes the intelligent centralized control of each production process of the resource utilization of the engineering dregs, effectively reduces the cost of production workers, improves the technical level of the resource utilization of the engineering dregs, and provides a new technical scheme for the high-quality development of the resource utilization industry of the engineering dregs.

As shown in fig. 1 and 5, the sand separator 17 of the slag separation apparatus 3 includes: the sand-stone separator comprises a sand-stone separator shell 51, a sand-stone separator 52, a flushing nozzle 53 and a slurry guide pipe 54, wherein the flushing nozzle 53 is positioned inside the sand-stone separator shell 51 and around the sand-stone separator 52, the slurry guide pipe 54 is positioned at the bottom of the sand-stone separator shell 51, and the slurry guide pipe 54 is connected with the water circulation equipment 35 of the slurry recycling equipment 6. By providing the flushing nozzle 53 in the sand-stone separator 17, sand-stone separation efficiency is improved, and meanwhile, the preliminary cleaning of engineering slag soil provides easier-to-separate raw materials for mud-sand separation and mud-stone separation.

As shown in fig. 1, 6, 7, 8, 9 and 10, the trommel 20 is located above the collection hopper 21, the collection hopper 21 is located above the spiral silt separator 22, the wheel type silt separator 23 is located behind the spiral silt separator 22, the vibrating screen 24 is located behind the wheel type silt separator 23, the fineness modulus detecting apparatus 13 is located behind the vibrating screen 24, the finished sand conveyer belt 26 is located behind the vibrating screen 24, and the fine sand recovering apparatus 25 is located above the spiral silt separator 22 and the wheel type silt separator 23.

The rotary screen 20 is positioned on the top layer, the rotary screen 20 is obliquely arranged, so that mud and sand can be separated gradually along the rotary screen 20, separated sand sequentially enters the spiral mud and sand separator 22, the wheel type mud and sand separator 23 and the vibrating screen 24 through the collecting hopper 21, and the fineness modulus detection equipment 13 is arranged behind the vibrating screen 24, so that real-time detection of the fineness modulus of the sand is realized, and technical support is provided for further optimization of finished sand.

The trommel 20 of the sand and mud separating apparatus 4 includes: silt feed port 55, dividing section 56, optimizing section 57, screening section 58, tailing section 59, discharge port 60 and cleaning pipe 61, said trommel 20 comprises: the inlayer 62 and skin 63, inlayer 62 is the grid structure, inlayer 62 is located optimization district 57 and screening district 58, skin 63 is located silt particle feed inlet 55, partition district 56, optimization district 57, screening district 58 and tail district 59, skin 63 is seal structure at silt particle feed inlet 55, partition district 56, optimization district 57 and tail district 59, skin 63 is the grid structure at screening district 58, wash pipe 61 includes: the main water pipe 64, the branch water pipe 65 and the nozzle 66, the nozzle 66 is located on the branch water pipe 65, the silt feeding port 55 is connected with the dividing area 56, the dividing area 56 is connected with the optimizing area 57, the optimizing area 57 is connected with the screening area 58, the screening area 58 is connected with the tailing area 59, the tailing area 59 is connected with the discharging port 60, the main water pipe 64 of the cleaning pipe 61 is located in the middle of the drum screen 20, the branch water pipe 65 is located in the dividing area 56, the optimizing area 57 and the screening area 58, and different silt separation functional areas are arranged in the drum screen 20, so that the full-flow high integration of the silt from separation to cleaning and preliminary optimization of grading is realized, the occupied area of traditional silt separation is remarkably reduced, the whole process of cleaning and silt separation is effectively realized, and the silt content in the silt is effectively reduced.

The dividing section 56 includes: the spiral distributor 67, the water distribution pipe 65 and the nozzle 66, wherein the water distribution pipe 65 is positioned on the spiral distributor 67, the water distribution pipe 65 and the nozzle 66 are arranged on the spiral distributor 67, the space of the spiral distributor 67 is effectively utilized, the mud-sand separation function is added for the spiral distributor 67, and meanwhile, the process support is provided for reducing the mud content in the sand.

The optimization zone 57 includes: the optimizing device comprises an optimizing device 68, an optimizing ball 69, a water distributing and conveying pipe 65 and a nozzle 66, wherein the optimizing device 68 is positioned between the inner layer 62 and the outer layer 63 of the rotary screen 20, the optimizing ball 69 is positioned on the inner layer 62 of the rotary screen 20, the water distributing and conveying pipe 65 is positioned on the outer side of the optimizing device 68, the optimizing device 68 is a magnet, the optimizing ball 69 is a steel ball with the diameter of 10 mm-30 mm, the magnet optimizing device 68 is fixed on the inner layer 62 of the rotary screen 20, when the magnet optimizing device 68 rotates to the bottom of the rotary screen 20, the optimizing ball 69 is sucked and rotates to the top along with the rotary screen 20, the optimizing device 68 falls under the action of gravity, larger particles in bottom sand are crushed, the fineness modulus of the sand is reduced, meanwhile the sand with lower strength is crushed, the crushing index of the sand is reduced, and the firmness of the sand is increased at the same time of optimizing the sand grading.

The screening zone 58 includes: the buckle type screen 70, divide raceway 65 and nozzle 66, buckle type screen 70 is located on drum screen 20 inlayer 62, divide raceway 65 to be located buckle type screen 70 top, buckle type screen 70 includes: the buckle 71, buckle cap 72, buckle screen cloth 73 and screen cloth protection frame 74, buckle cap 72 is hemispherical steel helmet nut, screen cloth protection frame 74 is the screw thread reinforcing bar protection frame of diameter 10mm, buckle 71 is arranged in buckle cap 72, buckle cap 72 passes through threaded connection on drum sieve 20 inlayer 62, through steel helmet type buckle cap 72, effectively protect the connection fastness and the cleanliness of buckle 71, provide the guarantee for high-efficient better screen cloth, buckle screen cloth 73 and screen cloth protection frame 74 are connected on drum sieve 20 inlayer 62 through buckle 71 and buckle cap 72, screen cloth protection frame 74 stacks buckle screen cloth 73 top is through setting up the screen cloth in the drum sieve 20 into buckle 71 and connecting, improves screen cloth change efficiency, increases the reinforcing bar protection frame simultaneously on buckle type screen cloth 70, effectively reduces the screen cloth and receives sand's impact and friction, improves screen cloth life.

The collecting hopper 21 includes: aggregate shell 75, aggregate raceway 76, aggregate nozzle 77 and collection pipe 78, aggregate shell 75 is located drum sieve 20 divides material district 56, optimization district 57, screening district 58 and tail district 59 below, aggregate raceway 76 with drum sieve 20's main raceway 64 is connected, aggregate nozzle 77 is located aggregate raceway 76 is last, aggregate pipe 78 is located spiral silt separator 22 top, increase aggregate nozzle 77 in the collection hopper 21, further separate the silt to provide process support for reducing the silt content in the sand.

The spiral mud-sand separator 22 includes: the spiral device 79 is positioned on the spiral supporting shaft 80, the spiral water conveying pipe 81 is connected with the main water conveying pipe 64 of the rotary screen 20, the spiral water conveying pipe 81 is positioned inside the spiral supporting shaft 80, the spiral nozzle 82 is positioned outside the spiral supporting shaft 80, the spiral nozzle 82 is positioned on the spiral water conveying pipe 81, the spiral device 79 and the spiral supporting shaft 80 are positioned inside the groove hopper 83, and the mud and sand are further separated through the spiral water conveying pipe 81 connected with the spiral water conveying pipe 82 by arranging the spiral water conveying pipe 81 in the spiral supporting shaft 80, so that the separation efficiency of the spiral mud and sand separator 22 is effectively improved, and process support is provided for reducing the mud content in sand.

The wheel type mud-sand separator 23 includes: impeller 84, impeller back shaft 85, wheeled raceway 86, wheeled nozzle 87 and wheel groove 88, impeller 84 are located impeller back shaft 85, wheeled raceway 86 is connected with the main raceway 64 of drum screen 20, wheeled raceway 86 is located inside impeller back shaft 85, wheeled nozzle 87 is located wheeled raceway 86 and is opposite to the impeller 84 inboard, through set up wheeled raceway 86 in impeller back shaft 85 to through wheeled nozzle 87 of connection, effectively promoted the mud and sand separation efficiency of wheeled mud and sand separator 23, for reducing the mud content in the sand and providing technological support.

The vibrating screen 24 includes: the vibrating screen 89, the vibrator 90, the vibrating water pipe 91 and the vibrating nozzle 92, the vibrating screen 89 is located the vibrator 90 top, the vibrating water pipe 91 is located the vibrating screen 89 is middle with the vibrator 90, the vibrating water pipe 91 is connected with the main water pipe 64 of the drum screen 20, the vibrating nozzle 92 is located the vibrating water pipe 91 and faces vibrating screen 89 one side set up vibrating water pipe 91 and vibrating nozzle 92 below the vibrating screen 24, not only be favorable to washing away the fine sand that is stuck on the screen, but also carry out final washing before the sand goes out, provides technological support for reducing the mud content in the sand.

The fine sand recovery apparatus 25 includes: the megasonic particle separating screen 93, the cyclone 94 and the microwave separating screen device 95, the megasonic particle separating screen 93 is connected with the cyclone 94, the cyclone 94 is connected with the microwave separating screen device 95, and the separation efficiency and the recovery rate of fine sand are effectively improved through megasonic waves and the cyclone 94, so that process support is provided for sand grading optimization, and meanwhile, the water-washed sand yield and the recycling utilization rate of engineering dregs are improved.

The finished sand conveyor 26 includes: the sand washing conveyor 96, the grading conveyor 97, the machine sand conveyor 98, the homogenizing device 99 and the conveyor belt control system 100, wherein the grading conveyor 97 is respectively connected with the sand washing conveyor 96 and the machine sand conveyor 98, the homogenizing device 99 is positioned on the sand washing conveyor 96, the grading conveyor 97 and the machine sand conveyor 98, the conveyor belt control system 100 is connected with the sand washing conveyor 96, the grading conveyor 97 and the machine sand conveyor 98 through the sand grading optimization control system 41 in the intelligent control system 7, and the homogenizing device 99 is arranged on the finished sand conveyor 26 to uniformly mix the sand washing and the machine sand, further optimize the grading of the sand and improve the firmness of the sand, and provide process support for producing high-quality sand.

Optionally, as shown in fig.1, the primary liquid nitrogen soaking bin 27 is connected with the mud stone conveyor belt 18, the primary crushing device 28 is connected with the primary liquid nitrogen soaking bin 27, the secondary liquid nitrogen soaking bin 29 is connected with the primary crushing device 28, the secondary crushing device 30 is connected with the secondary liquid nitrogen soaking bin 29, the tertiary liquid nitrogen soaking bin 31 is connected with the secondary crushing device 30, the tertiary crushing device 32 is connected with the tertiary liquid nitrogen soaking bin 31, the fine powder recovery device 34 is connected with the slurry recycling device 6, the tops of the primary liquid nitrogen soaking bin 27, the secondary liquid nitrogen soaking bin 29 and the tertiary liquid nitrogen soaking bin 31 are respectively provided with the fine powder recovery device 34, the bottoms of the primary liquid nitrogen soaking bin 27, the secondary liquid nitrogen soaking bin 29 and the tertiary liquid nitrogen soaking bin 31 are respectively provided with the microwave vibration sieve 24 and the fine powder recovery device 34, and the bottoms of the primary crushing device 28, the secondary crushing device 30 and the tertiary crushing device 32 are respectively provided with the fine powder recovery device 34, and the microwave vibration sieve 24 and the fine powder recovery device 34 are respectively. By adopting a new process combining liquid nitrogen freezing and microwave heating vibration, the difficulty of mud-rock separation and stone crushing is reduced, the stone powder content in machine-made sand is reduced while the mud-rock separation efficiency is improved, and the dust in the stone crushing and screening processes is effectively reduced.

Optionally, as shown in fig. 1, the water circulation device 35 includes: the water source 101, the clean water house 102, the sewage house 103, the flocculation medicament house 104, the mud temporary storage tower 105 and the filter press room 106, wherein the filter press used in the filter press room 106 is a belt type vacuum filter and a diaphragm type filter press, the water source 101 is connected with the clean water house 102, the clean water house 102 is connected with the cleaning pipe 61, the sewage house 103 is connected with the flocculation medicament house 104, the flocculation medicament house 104 is connected with the mud temporary storage tower 105, the mud temporary storage tower 105 is connected with the filter press room 106, and the dosage of flocculation medicament is reduced and the filter press efficiency is improved through the belt type vacuum filter; the fluidized solidified soil production apparatus 36 includes: the automatic metering device comprises a curing agent bin 107, an additive bin 108, a fluid stirrer 109, an automatic metering unit 14 and a slurry conveying unit 110, wherein the curing agent bin 107 and the additive bin 108 are positioned above the fluid stirrer 109, the fluid stirrer 109 is connected with the slurry temporary storage tower 105, the automatic metering unit 14 is arranged between the curing agent bin 107 and the additive bin 108, the automatic metering unit 14 is arranged between the fluid stirrer 109 and the slurry temporary storage tower 105, the slurry conveying unit 110 is connected with the fluid stirrer 109, and the slurry treatment cost is reduced by effectively combining fluid curing production equipment with slurry generated in the process of recycling engineering dregs, and meanwhile, the produced fluid curing soil slurry can be widely applied to projects such as trench backfilling and the like, so that the added value of slurry recycling is improved.

Optionally, the clay-based recycled aggregate production apparatus 37 includes: the cement recycling system comprises a binder bin 111, an additive bin 112, a crushing device 113, a stirring device 114, an extrusion forming device 115, a clay-based regenerated aggregate bin 116 and an automatic metering unit 14, wherein the binder bin 111 and the additive bin 112 are positioned above the stirring device 114, the crushing device 113 is positioned below the stirring device 114, the binder bin 111, the additive bin 112 and the crushing device 113 are provided with the automatic metering unit 14, the additive bin 119 is connected with the fine powder recycling device 34, the binder bin 111, the additive bin 112 and the crushing device 113 are respectively connected with the stirring device 114, the stirring device 114 is connected with the extrusion forming device 115 through a conveyor belt, the clay-based regenerated aggregate bin 116 is positioned below the extrusion forming device 115, the clay cake produced in the process of recycling engineering slag is crushed and mixed by adding a binder and a curing agent, the clay-based regenerated aggregate is produced through the extrusion forming device 115, the problems of high recycling utilization technology of the clay cake are effectively solved, and the industrial aggregate is formed by the extrusion forming and the industrial aggregate is stably mixed for the road and the additive.

Optionally, the road water stabilization layer mix production apparatus 38 includes: aggregate bin 117, curing agent storehouse 118, additive storehouse 119, supply tank 120, ground paste agitated vessel 121, mix material conveyer pipe 122 and automatic metering unit 14, aggregate bin 117 with clay-based regeneration aggregate bin 116 is connected, supply tank 120 with clear water room 102 is connected, mix material conveyer pipe 122 with ground paste agitated vessel 121 is connected, aggregate bin 117, curing agent storehouse 118, additive storehouse 119, supply tank 120 with ground paste agitated vessel 121 is connected, automatic metering unit 14 is located between aggregate bin 117, curing agent storehouse 118, additive storehouse 119, supply tank 120 with ground paste agitated vessel 121, through the clay-based regeneration aggregate that utilizes mud cake resource to produce is used for road water steady layer mix, has improved clay-based regeneration aggregate engineering application scale notably.

Optionally, the additive manufacturing production apparatus 39 includes: the aggregate bin 117, the curing agent bin 118, the additive bin 119, the water supply tank 120, the slurry stirring device 121, the additive conveying device 123, the additive manufacturing device 124 and the automatic metering unit 14, the aggregate bin 117 is connected with the clay-based regenerated aggregate bin 116, the additive bin 119 is connected with the fine powder recycling device 34, the water supply tank 120 is connected with the clean water house 102, the aggregate bin 117, the curing agent bin 118, the additive bin 119 and the water supply tank 120 are respectively connected with the slurry stirring device 121, the automatic metering unit 14 is positioned between the aggregate bin 117, the curing agent bin 118, the additive bin 119, the water supply tank 120 and the slurry stirring device 121, the slurry stirring device 121 is connected with the additive manufacturing device 124 through the additive conveying device 123, and the clay-based regenerated aggregate high-added-value industrial application is realized through the additive manufacturing device 124, so that not only the clay-based regenerated aggregate resource utilization technical level is improved, but also the additive manufacturing cost is effectively reduced, and technical support is provided for the application of the additive manufacturing engineering.

As shown in fig. 11, a method for producing engineering slag soil as a resource comprises the following steps:

S1, testing fineness modulus of sand in engineering slag soil by using a feeding regulation and control system 40 and a sand grading optimization control system 41 in an intelligent control system 7;

S2, according to the sand fineness modulus and the target fineness modulus tested in S1, regulating and controlling the conveying speeds of a sand conveying belt 19 and a mud stone conveying belt 18 by utilizing a feeding regulation and control system 40 in an intelligent control system 7, separating out mud sand and mud stone from engineering slag by a feeding device 1 and a slag separation device 3, separating out water sand and mud stone by a mud sand separation device 4 and a mud stone separation device 5 respectively, washing out the water sand and preparing machine-made sand, and finally preparing the separated water sand and the prepared machine-made sand into finished sand meeting the target fineness modulus by a finished sand conveying belt 26 of the mud sand separation device 4;

S3, using a water circulation control system 45 in the intelligent control system 7, conveying the slurry separated by the mud-sand separation equipment 4 and the mud-stone separation equipment 5 in the S2 to a slurry recycling equipment 6, and producing a recycling product through the slurry recycling control system 44.

Optionally, the fineness modulus of the finished sand is 2.0-2.9, the mud content is 0.5-2.9%, and the crushing index is 5-29%.

Optionally, the 28d cylinder pressure of the clay-based recycled aggregate is more than 3MPa, and the crushing index is less than 30%.

Optionally, the recycling product includes: fluidized solidified soil, clay-based recycled aggregate, road water-stable layer mixture and additive products.

According to the engineering residue soil recycling production method, by adopting the intelligent control system 7, engineering residue soil recycling equipment is effectively utilized, sand and fluid solidified soil meeting engineering requirements are produced, clay-based recycled aggregate is innovatively manufactured, and is applied to road water-stable layer mixture and additive manufactured products, so that the engineering residue soil is fully utilized in a recycling mode, the additional value and the technical level of the engineering residue soil recycling utilization are obviously improved, and technical support is provided for high-quality development of the engineering residue soil recycling industry.

Example 1

As shown in fig. 1 and 11, the sand content, the stone content and the mud content are 75%, 5% and 20% respectively, engineering dregs A are added into a dregs separating device 3 through a feeding device 1, the fineness modulus of sand in the engineering dregs is 3.1 through a sand grading optimizing device 2, the target fineness modulus is set to be 2.5, the feeding speeds of a mud stone conveyor belt 18 and a mud sand conveyor belt 19 are regulated through an intelligent control system 7, the mixing proportion of water washed sand and machine-made sand is regulated through a finished sand conveyor belt 26, and finally the fineness modulus of the finished sand is 2.5, the mud content is 2.1%, and the crushing index is 15%; adding a curing agent and an additive into slurry produced in the process of separating engineering slag soil from mud and stone and separating mud and sand according to the weight ratio of 5:1 (slurry: curing agent) to 10:1 (slurry: additive), producing fluid curing soil with the fluidity of 280mm by using fluid curing soil production equipment 36, and conveying the fluid curing soil to a construction site by using conveying equipment for pouring; adding flocculating agent into the slurry generated in the process of separating engineering slag from mud and stone and separating mud and sand, conveying the slurry temporary storage tower 105 to a press-filtering room 106 for press-filtering to ensure that the water content of the mud cake after press-filtering is 38%, conveying the mud cake to a crushing device 113, adding bonding agent and additive with the weight ratio of 6:1 (mud cake: bonding agent) to 12:1 (mud cake: additive) after crushing, conveying the crushed mud cake, bonding agent and additive to a stirring device 114 for stirring, conveying the stirred powder to an extrusion molding device 115 for clay-based regenerated aggregate production, and placing the produced clay-based regenerated aggregates with different particle sizes into different clay-based regenerated aggregate bins 116 for natural curing and soaking curing for 28d for engineering application; the maintained clay-based recycled aggregate is conveyed into an aggregate bin 117 according to a weight ratio of 3:2:1 (10 mm particle size: 20mm particle size: 30mm particle size), and the aggregate, the curing agent, the additive and the water are sequentially added into a slurry stirring device 121 according to a weight ratio of 4:1.5:1:0.5 (aggregate: curing agent: additive: water) for stirring, the stirred mixture is conveyed into a conveying device through a mixture conveying pipe and conveyed to a construction site for road water-stable layer paving and maintenance; the cured clay-based recycled aggregate is conveyed into an aggregate bin 117 according to a weight ratio of 2:1 (10 mm particle size: 20mm particle size), and the aggregate, the curing agent, the additive and the water are sequentially added into a slurry stirring device 121 according to a weight ratio of 1:1:0.5:0.5 (aggregate: curing agent: additive: water) to be stirred, and the stirred mixture is conveyed into an additive manufacturing device 124 through an additive conveying device 123 to produce an additive product according to a designed pattern.

Example 2

As shown in fig. 1 and 11, the sand content, the stone content and the mud content are respectively 60%, 15% and 25% engineering dregs B are added into a dregs separation device 3 through a feeding device 1, the fineness modulus of sand in the engineering dregs is 3.0 through a sand grading optimization device 2, the target fineness modulus is set to be 2.9, the feeding speeds of a mud stone conveyor belt 18 and a mud sand conveyor belt 19 are regulated through an intelligent control system 7, the mixing proportion of water washed sand and machine-made sand is regulated through a finished sand conveyor belt 26, and finally the fineness modulus of the finished sand is 2.9, the mud content is 2.6% and the crushing index is 25%; adding a curing agent and an additive into slurry produced in the process of separating engineering slag soil from mud and stone and separating mud and sand according to the weight ratio of 6:1 (slurry: curing agent) to 11:1 (slurry: additive), producing fluid curing soil with the fluidity of 260mm by using fluid curing soil production equipment 36, and conveying the fluid curing soil to a construction site by using conveying equipment for pouring; adding flocculant into slurry generated in the process of separating engineering slag clay and mud stone, conveying the slurry temporary storage tower 105 to a press-filtering room 106 for press-filtering to ensure that the water content of the press-filtered mud cake is 29%, conveying the mud cake to a crushing device 113, adding binder and additive with the weight ratio of 5:1 (mud cake: binder) to 14:1 (mud cake: additive) after crushing, conveying the crushed mud cake, binder and additive to a stirring device 114 for stirring, conveying the stirred powder to an extrusion molding device 115 for clay-based regenerated aggregate production, placing the produced clay-based regenerated aggregates with different particle sizes into different clay-based regenerated aggregate bins 116 for natural maintenance and soaking for 28d, and performing engineering application; the maintained clay-based recycled aggregate is conveyed into an aggregate bin 117 according to the weight ratio of 3:1.5:1 (10 mm particle size: 20mm particle size: 30mm particle size), and the aggregate, the curing agent, the additive and the water are sequentially added into a slurry stirring device 121 according to the weight ratio of 5:2:1:0.5 (aggregate: curing agent: additive: water) for stirring, the stirred mixture is conveyed into a conveying device through a mixture conveying pipe and conveyed to a construction site for road water-stable layer paving and maintenance; the maintained clay-based recycled aggregate is conveyed into an aggregate bin 117 according to a weight ratio of 3:2 (10 mm particle size: 20mm particle size), and the aggregate, the curing agent, the additive and the water are sequentially added into a slurry stirring device 121 according to a weight ratio of 1:1:0.6:0.8 (aggregate: curing agent: additive: water) to be stirred, and the stirred mixture is conveyed into an additive manufacturing device 124 through an additive conveying device 123 to produce an additive product according to a designed pattern.

Example 3

As shown in fig. 1 and 11, the sand content, the stone content and the mud content are respectively 85%, 5% and 10% engineering dregs C are added into the dregs separating equipment 3 through the feeding equipment 1, the fineness modulus of sand in the engineering dregs is tested to be 2.9 through the sand grading optimizing equipment 2, the target fineness modulus is set to be 2.0, the feeding speeds of the mud stone conveyor belt 18 and the mud sand conveyor belt 19 are regulated through the intelligent control system 7, the mixing proportion of water washed sand and machine-made sand is regulated through the finished sand conveyor belt 26, and finally the fineness modulus of the finished sand is 2.0, the mud content is 0.5%, and the crushing index is 5%; adding a curing agent and an additive into slurry produced in the process of separating engineering slag soil from mud and stone and separating mud and sand according to the weight ratio of 4:1 (slurry: curing agent) to 9:1 (slurry: additive), producing fluid curing soil with the fluidity of 290mm by using fluid curing soil production equipment 36, and conveying the fluid curing soil to a construction site by using conveying equipment for pouring; adding flocculating agent into the slurry generated in the process of separating engineering slag clay and mud stone and separating mud and sand, conveying the slurry temporary storage tower 105 to a press filtration room 106 for press filtration, enabling the water content of the mud cake after press filtration to be 35%, conveying the mud cake to a crushing device 113, adding bonding agents and additives with the weight ratio of 6:1 (mud cake: bonding agent) and 12:1 (mud cake: additive) after crushing, conveying the crushed mud cake, bonding agents and additives to a stirring device 114 for stirring, conveying the stirred powder to an extrusion molding device 115 for clay-based regenerated aggregate production, placing the produced clay-based regenerated aggregates with the particle sizes of 10mm, 20mm and 30mm into different clay-based regenerated aggregate bins 116, and naturally curing and soaking for 28d for engineering application; the maintained clay-based recycled aggregate is conveyed into an aggregate bin 117 according to a weight ratio of 4:2:1 (10 mm particle size: 20mm particle size: 30mm particle size), and the aggregate, the curing agent, the additive and the water are sequentially added into a slurry stirring device 121 according to a weight ratio of 6:2:1:1 (aggregate: curing agent: additive: water) to be stirred, and the stirred mixture is conveyed into a conveying device through a mixture conveying pipe and conveyed to a construction site to be paved and maintained on a road water stable layer; the maintained clay-based recycled aggregate is conveyed into an aggregate bin 117 according to a weight ratio of 3:1 (10 mm particle size: 20mm particle size), and the aggregate, the curing agent, the additive and the water are sequentially added into a slurry stirring device 121 according to a weight ratio of 1:1:0.7:0.85 (aggregate: curing agent: additive: water) to be stirred, and the stirred mixture is conveyed into an additive manufacturing device 124 through an additive conveying device 123 to produce an additive product according to a designed pattern.

Separating mud from sand by using engineering dregs, and producing sand meeting the requirement of a target fineness modulus by using sand grading optimization equipment 2, wherein the produced sand can meet the requirements of stirring stations and engineering sand; meanwhile, the slurry generated in the process of recycling and separating engineering dregs is directly used for producing the fluidized solidified soil, the mud cake after the slurry is subjected to pressure filtration can be used for producing the clay-based recycled aggregate, and the clay-based recycled aggregate is used for other engineering, so that the engineering application scene of the slurry in the process of recycling the engineering dregs is expanded, and the recycling utilization added value and the technical level are improved.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present application after reading the present specification, and these modifications and variations do not depart from the scope of the application as claimed in the pending claims.

Claims (7)

1. An engineering residue soil recycling production device is characterized in that, the engineering dregs recycling production equipment comprises: sand grading optimizing equipment and an intelligent control system; the intelligent control system is in control connection with the sand grading optimization equipment;

The sand grading optimization device comprises: the device comprises a megasonic mud remover, microwave air drying equipment, a sand and stone separation sieve, fineness modulus detection equipment and an automatic metering unit;

The megasonic mud remover is used for removing mud and sand contained in engineering dregs, drying sand and stones after the mud and sand are removed through microwave air drying equipment, separating the dried sand and stones through a sand and stone separating screen, and measuring the fineness modulus of sand in the engineering dregs through fineness modulus detection equipment and an automatic metering unit;

The megasonic mud remover, the microwave air drying equipment, the sand and stone separating screen and the fineness modulus detection equipment are connected in sequence, and an automatic metering unit is arranged on the side, facing the microwave air drying equipment, of the sand and stone separating screen;

the fineness modulus detecting apparatus includes: the automatic weighing device comprises microwave drying equipment, an automatic sampling instrument, automatic weighing equipment, an automatic screening instrument and a test result display, wherein the microwave drying equipment is connected with the automatic sampling instrument, the automatic sampling instrument is connected with the automatic weighing equipment, the automatic screening instrument is connected with the automatic weighing equipment, and the test result display is connected with an intelligent control system;

The engineering dregs recycling production equipment also comprises a screw conveyor;

the megasonic sludge remover is connected with the screw conveyor, the microwave air drying equipment is connected with the megasonic sludge remover, the sand and stone separating screen is connected with the microwave air drying equipment, the fineness modulus detection equipment is connected with the sand and stone separating screen, and the megasonic sludge remover, the microwave air drying equipment and the sand and stone separating screen are all provided with the automatic metering unit;

And automatically detecting the fineness modulus of the sand in the engineering slag soil by fineness modulus detection equipment.

2. The engineering muck recycling production device according to claim 1, further comprising a feeding device, a sand grading optimization device, a muck separation device, a mud-sand separation device, a mud-stone separation device and a mud recycling device;

The feeding equipment is connected with the muck separation equipment through a feeding regulation and control system, the sand grading optimization equipment is connected with the muck separation equipment, the sand grading optimization equipment is connected with the mud-stone separation equipment and the mud-sand separation equipment through a sand grading optimization control system, and the muck separation equipment is connected with the mud-stone separation equipment and the mud-sand separation equipment through a mud-stone conveyor belt and a mud-sand conveyor belt respectively.

3. The engineering muck recycling production facility according to claim 2, wherein the sand separator of the muck separation facility comprises: the sand-stone separator comprises a sand-stone separator shell, a sand-stone separator, a flushing nozzle and a slurry guide pipe, wherein the flushing nozzle is positioned inside the sand-stone separator shell and around the sand-stone separator, the slurry guide pipe is positioned at the bottom of the sand-stone separator shell, and the slurry guide pipe is connected with water circulation equipment of slurry recycling equipment.

4. The engineering muck recycling production facility according to claim 2, wherein the silt separation facility comprises: drum sieve, collecting hopper, spiral silt separator, wheeled silt separator, shale shaker, fine sand recovery plant, fineness modulus check out test set and finished product sand conveyer belt, silt separation apparatus includes: the device comprises a primary liquid nitrogen soaking bin, a primary crushing device, a secondary liquid nitrogen soaking bin, a secondary crushing device, a tertiary liquid nitrogen soaking bin, a tertiary crushing device, a microwave vibrating screen device and a fine powder recovery device.

5. The engineering muck recycling production device according to claim 4, wherein the primary liquid nitrogen soaking bin is connected with the mudstone conveyor belt, the primary crushing device is connected with the primary liquid nitrogen soaking bin, the secondary liquid nitrogen soaking bin is connected with the primary crushing device, the secondary crushing device is connected with the secondary liquid nitrogen soaking bin, the tertiary liquid nitrogen soaking bin is connected with the secondary crushing device, the tertiary crushing device is connected with the tertiary liquid nitrogen soaking bin, and the fine powder recovery device is connected with the slurry recycling device.

6. The engineering residue soil recycling production device according to claim 5, wherein the fine powder recovery device is arranged at the tops of the primary liquid nitrogen soaking bin, the secondary liquid nitrogen soaking bin and the tertiary liquid nitrogen soaking bin, the microwave vibrating screen device and the fine powder recovery device are arranged at the bottoms of the primary liquid nitrogen soaking bin, the secondary liquid nitrogen soaking bin and the tertiary liquid nitrogen soaking bin, the fine powder recovery device is arranged at the tops of the primary crushing device, the secondary crushing device and the tertiary crushing device, and the microwave vibrating screen device and the fine powder recovery device are arranged at the bottoms of the primary crushing device, the secondary crushing device and the tertiary crushing device.

7. The production method of the engineering residue soil recycling production facility as claimed in any one of claims 2 to 6, which is characterized by comprising the following steps:

s1, testing fineness modulus of sand in engineering slag soil by using a feeding regulation and control system and a sand grading optimization control system in an intelligent control system;

S2, according to the tested sand fineness modulus and the target fineness modulus, regulating and controlling the conveying speeds of a mud sand conveying belt and a mud stone conveying belt by utilizing a feeding regulation and control system in an intelligent control system, separating out mud sand and mud stone from engineering slag by using a feeding device and a slag separation device, and separating out water washed sand and manufactured machine-made sand by using the mud sand and mud stone respectively;

S3, blending the separated water washed sand and the manufactured machine-made sand into finished sand meeting the target fineness modulus through a finished sand conveyor belt of mud-sand separation equipment;

S4, using a water circulation control system in the intelligent control system to convey the slurry separated by the mud-sand separation equipment and the mud-stone separation equipment in the S2 to a slurry recycling device, and producing a recycling product through the slurry recycling control system.