Regenerated sand powder concrete production method and equipment

Abstract

The invention relates to a regenerated sand powder concrete production method and equipment, and relates to the technical field of regenerated sand powder concrete production, and the production method comprises the steps of homogenization pretreatment, primary crushing and sorting, secondary crushing and sorting and regeneration processing; due to the fact that the number of production modules is large, multiple times of crushing and screening are carried out, and sand powder of different sizes is selected, the double-shaft solid waste shearing roller type crusher, the solid waste step flip-flow screen and the rolling impact solid waste treatment grading crusher are additionally arranged to treat various materials. Meanwhile, a secondary powerful solid waste disposal sorting machine of the finished product sorting device of the intelligent sorting disposal workshop of the heavy special screening sieve is additionally arranged, the efficiency of a crushing and screening part is improved through the secondary powerful solid waste disposal sorting machine, and meanwhile an automatic control system, a remote monitoring system and an image system are arranged in the whole system module according to needs; the production capacity of produced products is increased, the cost is reduced, the profit is improved, and the production method integrating energy conservation, emission reduction, environmental protection and intelligence can be realized in the production process.

Description

Technical Field

[0001] The present application relates to the technical field of recycled sand powder concrete production, and in particular to a method and equipment for producing recycled sand powder concrete. Background Art

[0002] Pollution prevention and control of renovation waste and demolition waste is a difficult problem.

[0003] In the existing technology, the waste collected at the construction site contains a lot of mixed waste. Usually, jaw crushers and impact crushers are used to crush the waste concrete into particles of appropriate size, and then the iron remover is used to remove the iron. After that, the crushed particles are screened by equipment such as vibrating screens and rotary vibrating screens to obtain recycled aggregates that meet the requirements. After the recycled aggregates are washed by equipment such as stone washers and spiral sand washers to remove surface pollutants and impurities such as soil, the recycled aggregates are graded for subsequent configuration and use. However, the energy consumption of the equipment in the existing process is relatively high, and the equipment utilization efficiency is low, which indirectly increases the production cost. Among them, the complete set of equipment for recycled sand powder concrete involves too many. If only focusing on the production of one product, it will require a lot of equipment consumption, and the utilization rate of recycled sand and gravel will not be too high, which will also lead to an increase in production costs.

[0004] Therefore, in response to the above-mentioned related technical problems, a method and equipment for producing recycled sand powder concrete are proposed. Summary of the Invention

[0005] In order to improve the above problems, the present application provides a method and equipment for producing recycled sand powder concrete.

[0006] In the first aspect, the present application provides a method for producing recycled sand powder concrete, which adopts the following technical solution: The production method steps are as follows: Homogenization pretreatment: Construction solid waste first enters the homogenization treatment yard, where the raw solid waste materials are homogenized and sorted by sorting equipment. After the homogenization and sorting process, preliminary manual sorting is performed again to select hazardous waste. After the preliminary homogenization and sorting process, the solid waste is sent to the raw material homogenization bin by conveying equipment for buffering and homogenization before entering the plate feeder. Primary crushing and sorting: After homogenization and sorting, the material is evenly and continuously sent by the plate feeder to the double-shaft solid waste shear roller crusher for coarse shearing sorting and crushing. The processed material is sent to the heavy-duty screening equipment for screening by the conveyor. After screening by the heavy-duty screening equipment, the material is divided into two types of materials. The material larger than 100mm enters the intelligent sorting and disposal workshop, and the material smaller than 100mm enters the solid waste ladder relaxation screen; The material is selected by the solid waste step relaxation screen to obtain 0-15 mm, 15-40 mm, and 40-100 mm regenerated materials, the 0-15 mm regenerated material is deeply processed into cementitious material, the 15-40 mm regenerated material enters the first solid waste disposal sorting machine, and the 40-100 mm enters the first horizontal solid waste disposal sorting machine, and the light impurities are transported to the light material bin through the first horizontal solid waste disposal sorting machine, and the material automatically flows into the intelligent sorting and disposal workshop after passing through the first solid waste disposal sorting machine, and the organic impurities are selected; Secondary crushing and sorting: the last material enters the roller counterattack solid waste disposal grading crusher for crushing treatment, and the material after the crushing treatment enters the finished product sorting device for screening, and the material after the crushing treatment enters the finished product sorting device for screening; After the material passes through the finished product sorting device, it is divided into 0-5 mm, 5-10 mm, 10-30 mm, and greater than 30 mm regenerated sand and aggregate, the greater than 30 mm regenerated material is selected by the second powerful solid waste disposal sorting machine to transport light materials to the light material bin, and then flows into the roller counterattack solid waste disposal grading crusher for recycling treatment, the 5-10 mm and 10-30 mm regenerated sand and aggregate are respectively transported to flow into the second powerful solid waste disposal sorting machine to transport light materials to the light material bin, and then flow into the regenerated sand and aggregate bin; Regeneration processing: 0-5 mm is transported to the regenerated sand bin to be sent to the manufacturing equipment for making regenerated products, and is input into the regenerated material bin, the regenerated aggregate bin and the regenerated sand bin according to the requirement, wherein the regenerated sand and the regenerated aggregate are transported to the regenerated sand product manufacturing module by the conveying device.

[0007] In the second aspect, the production equipment of the recycled sand concrete is suitable for the recycled sand concrete production method, the heavy screen selection equipment is provided with an automatic mechanical hand or an artificial intelligent iron and impurity removal device between the double-shaft solid waste shearing roller crusher and the solid waste step relaxation screen, and the roller counterattack solid waste disposal grading crusher and the finished product sorting device are also provided with an automatic mechanical hand or an artificial intelligent iron and impurity removal device.

[0008] Preferably, an air purification device is arranged in the original solid waste material homogenization field, and a physical dust removal and impurity removal device is arranged on the shearing crusher, the grading and shaping crusher, the relaxation step screen and the dust point of the production line to perform negative pressure dust removal and air purification by the air purification device, and the regenerated product manufacturing module can select one or more according to the requirement, wherein there are light foamed soil production equipment, regenerated material module production equipment, sponge permeable brick production equipment, wall material production system, regenerated cementitious material production equipment and second concrete mixing production equipment.

[0009] By adopting the above technical solution, the device uses negative pressure dust removal and air purification devices to purify the air to ensure the cleanliness of the production environment and can collect dust. At the same time, automatic control, remote monitoring and imaging systems are set up in the entire system module as needed to achieve energy-saving, emission reduction, environmental protection, and intelligent integrated production methods during the production process.

[0010] Preferably, a distributor is provided on the top of the double-axis solid waste shearing roller crusher, and a concave roller body and a convex roller body are connected inside the double-axis solid waste shearing roller crusher through a rotating shaft, and the outer side of the concave roller body is provided with uniformly distributed concave scissors tooth blocks arranged in a circular array, and the outer side of the convex roller body is provided with uniformly distributed convex scissors tooth blocks arranged in a circular array and engaged with the uniformly distributed concave scissors tooth blocks.

[0011] Preferably, filter plates are provided below the concave roller body and the convex roller body, and a debris metal discharge port is provided in the gap between the concave roller body, the convex roller body and the filter plate, a filter material discharge port is provided between the two groups of filter plates, and the filter material discharge port and the distributor and the center line of the concave roller body and the convex roller body are in the same straight line.

[0012] By adopting the above technical solution, it is ensured that the evenly distributed convex scissor tooth blocks and the evenly distributed concave scissor tooth blocks can accurately form a complete trough-shaped crushing cavity to accurately extrude and shear the crushed materials, and cut the steel bars inside the crushed materials into steel bars of equal length, which are then discharged through the debris metal discharge port.

[0013] Preferably, a screening feed port is provided at the top of the solid waste step relaxation screen, an oscillation motor is connected to the outside of the solid waste step relaxation screen, and the interior of the solid waste step relaxation screen is provided with a debris and metal block discharge area, a large block material screening area, a medium crushed material screening area, a No. 1 fine crushed material screening area, and a No. 2 fine crushed material screening area from left to right.

[0014] Preferably, a fine material transfer screening area is provided on the top of the No. 2 fine material screening area, the debris and metal block discharge area and the bulk material screening area are both oblique Z-shaped, and a grading sorting screen plate is provided at the bottom of the upper half of the debris and metal block discharge area, and a specific gravity sorting screen plate is provided at the bottom of the lower half of the debris and metal block discharge area.

[0015] Preferably, a medium crushed material sorting screen is provided between the bulk material screening area and the fine crushed material transfer screening area, a fine crushing sorting screen is provided between the medium crushed material screening area, the bulk material screening area and the No. 1 fine crushed material screening area, and a fine crushing sorting screen is also provided between the No. 2 fine crushed material screening area and the fine crushed material transfer screening area.

[0016] By adopting the technical scheme, the directions of the various discharge outlets are inconsistent, so that the discharge flow channel pipes do not interfere with each other during the discharging process; when the screen is replaced, if the fixed screen is replaced, the shell needs to be disassembled for replacement; and the screen of the flip-flow screen is replaced by disassembling the lower plate member of the shell.

[0017] Preferably, the top of the roller-impact solid waste disposal grading crusher is provided with a crushing feed inlet, and the bottom of the roller-impact solid waste disposal grading crusher is provided with a fixed return-impact knife block device, a plurality of groups of scissor-fixed return-impact knife blocks are arranged on the fixed return-impact knife block device, and the two sides of the fixed return-impact knife block device are respectively provided with a sundry and metal discharge outlet and a broken material discharge area.

[0018] Preferably, the roller-impact solid waste disposal grading crusher is provided with a mixed feeding box, and the mixed feeding box is provided with a scissor-type rotor assembly below, a plurality of groups of buffer springs are connected between the scissor-type fixed return-impact knife block group and the roller-impact solid waste disposal grading crusher, and an external hydraulic cylinder is connected between the scissor-type fixed return-impact knife block group and the roller-impact solid waste disposal grading crusher.

[0019] 1. Compared with the prior art, the recycled sand powder concrete production method and equipment, the design production system module is multiple and fast, multiple crushing and screening are performed, different size sand powders are selected, materials are divided into two kinds of materials after being selected and treated by a heavy screening device, materials greater than 100mm enter an intelligent sorting disposal workshop, and materials less than 100mm enter a solid waste ladder flip-flow screen 2. The materials are selected by the solid waste ladder flip-flow screen to obtain 0-15mm, 15-40mm and 40-100mm recycled materials, the 0-15mm recycled materials are deeply processed into cementitious materials, the 15-40mm recycled materials enter a first solid waste disposal sorting machine, and the 40-100mm recycled materials enter a first horizontal solid waste disposal sorting machine. Light impurities are transported to a light material bin after being selected by the first horizontal solid waste disposal sorting machine, and the materials are divided into 0-5mm, 5-10mm, 10-30mm, and greater than 30mm recycled sand powders and recycled aggregates after being selected by a finished product sorting device. The greater than 30mm recycled materials are selected by a second powerful solid waste disposal sorting machine to be transported to the light material bin, and then flow into a roller-impact solid waste disposal grading crusher for recycling treatment. The 5-10mm and 10-30mm recycled sand powders and recycled aggregates are respectively transported to flow into the second powerful solid waste disposal sorting machine to be selected to be transported to the light material bin, and the 0-5mm is transported to a recycled sand bin to be sent to a recycled product manufacturing device.

[0020] 2. Compared with the prior art, the recycled sand powder concrete production method and equipment add the double-shaft solid waste shearing roller type crusher, the solid waste stepped flip screen and the roller reverse impact solid waste disposal grading crusher for processing various materials, which also increases the heavy screening equipment, the intelligent sorting workshop product sorting device and the secondary powerful solid waste disposal sorting machine, improves the efficiency of the crushing and screening machines in the crushing and screening part, increases the production capacity of the output products, reduces the cost and improves the profit.

[0021] 3. Compared with the prior art, the recycled sand powder concrete production method and equipment screens out the hazardous materials, metal materials and organic impurities such as bamboo, wood and rubber plastic in the solid waste, uses the negative pressure dust removal and air purification device to purify the air to ensure the cleanliness of the production environment, collects the dust, and sets the automatic control, remote monitoring and image system in the whole system module to realize the energy-saving, emission-reducing, environment-friendly and intelligent integrated production method in the production process. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the process flow chart of the present application; Figure 2 is the process flow chart of the homogenization pretreatment of the present application; Figure 3 is the process flow chart of the primary crushing and sorting of the present application; Figure 4 is the process flow chart of the secondary crushing and sorting of the present application; Figure 5 is the process flow chart of the recycling processing of the present application; Figure 6 is the structure schematic diagram of the side section of the double-shaft solid waste shearing type crusher of the present application; Figure 7 is the structure schematic diagram of the side section of the fixed special stage flip screen of the present application; Figure 8 is the structure schematic diagram of the side section of the roller reverse impact solid waste disposal grading crusher of the present application.

[0023] The accompanying drawings are marked as follows: 1. Double-shaft solid waste shear roller crusher; 11. Distributor; 12. Debris and metal discharge port; 13. Filter material discharge port; 14. Convex roller body; 141. Uniformly distributed convex scissor tooth block; 15. Filter plate; 16. Concave roller body; 161. Uniformly distributed concave scissor tooth block; 2. Solid waste ladder relaxation screen; 21. Screening feed port; 22. Debris and metal block discharge area; 221. Grading sorting screen plate; 222. Specific gravity sorting screen plate; 23. Large material screening area; 231. Medium crushing material sorting screen; 24. Medium crushing material screening area; 241. Fine crushing sorting screen; 25 1. Fine material screening area; 26. Fine material screening area No. 2; 27. Fine material transfer and screening area; 28. Oscillation motor; 3. Roller impact solid waste disposal grading crusher; 31. Crushing inlet; 32. Mixed feed box; 33. Scissor-type rotor assembly; 331. Movable rotor scissor block; 34. Fixed grading crushing knife group; 35. External hydraulic cylinder; 36. Fixed return material impact knife block device; 361. Scissor-type fixed return material impact knife block; 37. Scissor-type fixed impact knife block group; 371. Buffer spring; 38. Debris and metal discharge port; 39. Discharge area for accompanying crushed materials. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] The following is combined with Figures 1-8 , further details of this application are given.

[0026] Example 1 The production method of recycled sand powder concrete includes the following steps: Homogenization pretreatment: Construction solid waste first enters the homogenization treatment yard, where the raw solid waste materials are homogenized and sorted by sorting equipment. After the homogenization and sorting process, preliminary manual sorting is performed again to select hazardous waste. After the preliminary homogenization and sorting process, the solid waste is sent to the raw material homogenization bin by conveying equipment for buffering and homogenization before entering the plate feeder. Primary crushing and sorting: After homogenization and sorting, the material is evenly and continuously sent by the plate feeder to the double-shaft solid waste shear roller crusher 1 for coarse shearing sorting and crushing. The processed material is sent to the heavy-duty screening equipment for screening via a conveyor. After screening by the heavy-duty screening equipment, the material is separated into two types of materials. The material larger than 100mm enters the intelligent sorting and disposal workshop, and the material smaller than 100mm enters the solid waste ladder relaxation screen 2; The materials are separated into recycled materials of 0-15mm, 15-40mm and 40-100mm through the solid waste step relaxation screen 2. The recycled materials of 0-15mm are further processed into cementitious materials, the recycled materials of 15-40mm enter the first-level solid waste disposal sorting machine, and the recycled materials of 40-100mm enter the first-level horizontal solid waste disposal sorting machine. The light impurities are again selected by the first-level horizontal solid waste disposal sorting machine and transported to the light material warehouse. After passing through the first-level solid waste disposal sorting machine, the materials automatically flow into the intelligent sorting and disposal workshop to select organic impurities such as bamboo, wood, rubber and plastic. Secondary crushing and sorting: Finally, the material enters the roller impact solid waste disposal grading crusher 3 for crushing, and the crushed material enters the finished product sorting device for screening; After passing through the finished product sorting device, the materials are divided into 0-5mm, 5-10mm, 10-30mm and larger than 30mm recycled sand powder and recycled aggregate. The recycled materials larger than 30mm are separated into light materials through the secondary strong solid waste disposal sorting machine and transported to the light material bin, and then transported into the roller impact solid waste disposal grading crusher 3 for recycling treatment. The 5-10mm and 10-30mm recycled sand powder and recycled aggregate are respectively transported into the secondary strong solid waste disposal sorting machine to separate the light materials and transport them to the light material bin, and then transported into the recycled sand powder and recycled aggregate bin; Regeneration processing: 0-5mm is transported to the regenerated sand bin and sent to the production and processing equipment of recycled products. According to demand, it is input into the recycled material bin, recycled aggregate bin and regenerated sand bin. The regenerated sand powder and recycled aggregate are transported to the regenerated sand powder finished product production module through the conveying device.

[0027] Example 2 The production equipment of recycled sand powder concrete is suitable for the production method of recycled sand powder concrete. An automatic manipulator or an artificial intelligence iron and impurity removal device is provided between the heavy screening equipment selection screen and the double-axis solid waste shearing roller crusher 1 and the solid waste ladder relaxation screen 2, and an automatic manipulator or an artificial intelligence iron and impurity removal device is also provided between the roller impact solid waste disposal grading crusher 3 and the finished product sorting device; the metal objects in the solid waste are separated by the automatic manipulator or the artificial intelligence iron and impurity removal device, among which the automatic manipulator or the artificial intelligence iron and impurity removal device is a common iron and impurity removal means in this field, and its specific working principle and treatment method are not described in detail here. The homogenization treatment yard in the production method and the homogenization sorting treatment of the multifunctional special sorting equipment in the yard are both common technical means for existing solid waste treatment, and its specific equipment and its treatment method are not described in detail here. The hazardous waste in the production method includes large waste and hazardous waste (mainly paint cans, waste batteries, etc.).

[0028] As a preferred embodiment, an air purification device is provided in the homogenization field of the original solid waste material to be processed, and a physical dust collection and impurity removal device is provided at the shearing and crushing, grading and shaping crushing, relaxation and step screening, and dust points of the production line for negative pressure dust removal and an air purification device for air purification, and the recycled finished product production module can select one or more items according to demand, including lightweight foamed soil production equipment, recycled body material module production equipment, sponge permeable brick production equipment, wall material production system, recycled cementitious material production equipment, and second concrete mixing production equipment; the shearing and crushing, grading and shaping crushing, relaxation and step screening, and dust points in the production method are purified by negative pressure dust removal and air purification devices to ensure the cleanliness of the production environment and collect dust, and the negative pressure dust removal and air purification devices are commonly used dust removal and purification means in this field, and will not be elaborated here. The first-level solid waste disposal sorting machine and the first-level horizontal solid waste disposal sorting machine and the intelligent sorting and disposal vehicle in the primary crushing and sorting All of them are common sorting equipment in this field, which separate materials through different physical properties to complete the preliminary sorting of solid waste, and the secondary strong solid waste disposal sorting machine and finished product sorting device in the secondary crushing and sorting are both existing common sorting equipment, and they also use fixed different physical properties for classification and sorting. Their specific structure and sorting methods are not described in detail here. The lightweight foamed soil production equipment, recycled body material module production equipment, sponge permeable brick production equipment, wall material production system, recycled cementitious material production equipment, and second concrete mixing production equipment in the recycled finished product production module are all different production and utilization means of the recycled finished product production module. These equipment can be used to process crushed sand powder concrete into different products, and the specific processing methods of each equipment are not described in detail here. At the same time, automatic control, remote monitoring and imaging systems are set up in the entire system module as needed to achieve energy-saving, emission reduction, environmental protection, and intelligent integrated production methods in the production process.

[0029] As a preferred embodiment, a distributor 11 is provided on the top of the double-shaft solid waste shearing roller crusher 1, and a concave roller body 16 and a convex roller body 14 are connected to the double-shaft solid waste shearing roller crusher 1 through a rotating shaft, and the outer side of the concave roller body 16 is provided with a uniformly distributed concave scissor tooth block 161 arranged in a ring array, and the outer side of the convex roller body 14 is arranged in a ring array with a uniformly distributed convex scissor tooth block 141 that is mutually embedded with the uniformly distributed concave scissor tooth block 161; the outside of the double-shaft solid waste shearing roller crusher 1 is provided with a driving mechanism for driving the concave roller body 16 and the convex roller body 14 synchronously rotates the motor, and the drive of the crusher shaft is a conventional means in this field and will not be elaborated on here. During the operation of the double-shaft solid waste shearing roller crusher 1, the crushed material enters the double-shaft solid waste shearing roller crusher 1 from the distributor 11. During the crushing process inside the double-shaft solid waste shearing roller crusher 1, the material can be sheared and crushed by the groove crushing cavity formed by the uniformly distributed concave scissor tooth blocks 161 on the concave roller body 16 and the uniformly distributed convex scissor tooth blocks 141 on the convex roller body 14 under the drive of their respective rotating shafts.

[0030] As a preferred embodiment, filter plates 15 are provided below the concave roller body 16 and the convex roller body 14, and a debris metal discharge port 12 is provided in the gap between the concave roller body 16 and the convex roller body 14 and the filter plate 15. A filter material discharge port 13 is provided between the two sets of filter plates 15, and the filter material discharge port 13 is in the same straight line with the distributor 11 and the center line of the concave roller body 16 and the convex roller body 14. In the crushing process, large pieces of stone are squeezed and sheared into small pieces of material and discharged through the filter material discharge port 13. On the other hand, steel bars and the like contained in the large pieces of stone can be removed. The long strip material is cut into pieces of about 350 mm in length and discharged at the debris metal discharge port 12 through the filter plate 15. The concave roller body 16 and the convex roller body 14 rotate in opposite directions at the same speed under the synergistic effect, so as to ensure that the uniformly distributed concave scissor tooth blocks 161 and the uniformly distributed convex scissor tooth blocks 141 installed on their surfaces can accurately form a complete groove-shaped crushing cavity to accurately extrude and shear the crushed material, and cut the steel bars inside the crushed material into steel bars of equal length, and then discharge them through the debris metal discharge port 12.

[0031] As a preferred embodiment, a screening feed port 21 is provided on the top of the solid waste step relaxation screen 2, an oscillation motor 28 is connected to the outside of the solid waste step relaxation screen 2, and a debris and metal block discharge area 22, a bulk material screening area 23, a medium crushed material screening area 24, a No. 1 fine crushed material screening area 25, and a No. 2 fine crushed material screening area 26 are sequentially provided inside the solid waste step relaxation screen 2 from left to right; a fine crushed material transfer screening area 27 is provided on the top of the No. 2 fine crushed material screening area 26, the debris and metal block discharge area 22 and the bulk material screening area 23 are both oblique Z-shaped, and the debris and metal block The bottom of the upper half of the discharge area 22 is provided with a grading and sorting screen plate 221, the bottom of the lower half of the debris and metal block discharge area 22 is provided with a specific gravity sorting screen plate 222, a medium crushed material sorting screen 231 is provided between the bulk material screening area 23 and the fine crushed material transfer screening area 27, a fine crushing and sorting screen 241 is provided between the medium crushed material screening area 24 and the bulk material screening area 23 and the first fine crushed material screening area 25, and a fine crushing and sorting screen 241 is also provided between the second fine crushed material screening area 26 and the fine crushed material transfer screening area 27; solid waste materials enter the screening feed port 21 from the screening feed port 21. In the debris and metal block discharge area 22, the debris and metal blocks remain in the debris and metal block discharge area 22, while the large pieces of material pass through the grading and sorting screen plate 221 and the specific gravity sorting screen plate 222 to enter the large piece material screening area 23, and the medium crushed material screened by the medium crushed material sorting screen 231 in the large piece material screening area 23 enters the fine crushed material transfer screening area 27, and passes through the fine crushing sorting screen 241 of the fine crushed material transfer screening area 27 to enter the second fine crushed material screening area 26, while the part of the fine crushed material that remains in the medium crushed material screening area 24 and is not filtered passes through the screen below it. The fine crushing and sorting screen 241 enters the No. 1 fine crushing material screening area 25, and the fine crushing and sorting screen 241 and the medium crushing material sorting screen 231 provide circular vibration force through the vibration motor 28, thereby screening the material on the screen. The materials that are stuck together are gradually broken up under the combined action of the circular vibration force and the up and down swinging of the screen, thereby improving the screening efficiency. The circular vibration force will also ensure that the screening holes of the screen will not be blocked by materials with excessive viscosity. The interaction between the vibration motor 28 and each filter plate is a conventional means in the vibration filtering equipment, and its specific structure and driving principle will not be elaborated on here.

[0032] The screen frame of the fine crushed sorting screen 241 and the medium crushed material sorting screen 231 is welded and assembled by corresponding plates, and the screen frame is connected and fixed with the shell by a pressing plate type bolt. The installation sequence is divided into two types: the screen frame with the screen installed in advance is transported to the designated position at the rear of the solid waste stepped flip screen 2 shell, and is installed layer by layer in the order from top to bottom, and is fixed by a bolt. After the installation of all the screens is completed, the shells are installed. After the installation of the screen and its support is completed, the lower plate of the shell is installed and connected by a bolt. Finally, the discharge ports of the shells are connected and fixed by a bolt. In addition, the fine crushed sorting screen 241 at the bottom of the fine crushed material transfer screening area 27 can be selectively installed. When the screen is installed, the production products are five kinds. When the screen is not installed, the production products are four kinds. However, the fine crushed material production rate is different when the screen is installed. The impurities and metal block discharge area 22, the large block material screening area 23, and the medium crushed material screening area 24 can all produce corresponding products in the two installation modes. However, in the case of installing the lowermost layer of the screen, the fine crushed material products are produced by the first fine crushed material screening area 25 and the second fine crushed material screening area 26. When the screen is not installed, the fine crushed material products are discharged from the first fine crushed material screening area 25, and the medium crushed material products are produced by the medium crushed material screening area 24 and the fine crushed material transfer screening area 27.

[0033] As a preferred embodiment, the top of the roller-impact solid waste disposal grading crusher 3 is provided with a crushing feed inlet 31, and the bottom of the roller-impact solid waste disposal grading crusher 3 is provided with a fixed return-impact knife block device 36, on which a plurality of groups of shearing fixed return-impact knife blocks 361 are arranged in an array, and on both sides of the fixed return-impact knife block device 36, a sundry and metal discharge outlet 38 and a crushed material discharge area 39 are arranged; the roller-impact solid waste disposal grading crusher 3 is provided with a mixed feeding box 32, and below the mixed feeding box 32, a shearing rotor assembly 33 is arranged, the outer side of the shearing rotor assembly 33 is arranged in an annular array with movable rotor shearing blocks 331, the inner walls of both sides of the roller-impact solid waste disposal grading crusher 3 are respectively connected with a shearing fixed impact knife block group 37 and a fixed grading crushing knife group 34, and between the shearing fixed impact knife block group 37 and the roller-impact solid waste disposal grading crusher 3, a plurality of buffer springs 371 are connected, and between the shearing fixed impact knife block group 37 and the roller-impact solid waste disposal grading crusher 3, an external hydraulic cylinder 35 is connected; wherein the shearing rotor assembly 33 and the fixed return-impact knife block device 36 form a return-feeding area, the shearing rotor assembly 33 and the shearing fixed impact knife block group 37 form a mixed material crushing area, and the shearing rotor assembly 33 and the fixed grading crushing knife group 34 form a crushed material feeding area, the material to be crushed enters the mixed feeding box 32 of the roller-impact solid waste disposal grading crusher 3 from the crushing feed inlet 31 and is crushed by the shearing fixed return-impact knife blocks 361 on the fixed return-impact knife block device 36, the movable rotor shearing blocks 331 on the shearing rotor assembly 33, and the shearing fixed impact knife block group 37 and the fixed grading crushing knife group 34. The external hydraulic cylinder 35 between the shearing fixed impact knife block group 37 and the roller-impact solid waste disposal grading crusher 3 and the plurality of buffer springs 371 between the shearing fixed impact knife block group 37 and the roller-impact solid waste disposal grading crusher 3 are used to adjust the impact force of the crushed buffer material, the shearing fixed impact knife block group 37 can be adjusted up and down by the external hydraulic cylinder 35 to form a return-feeding area, and the size of the material at the crushed material discharge area 39 can also be adjusted slightly during the adjustment, and due to the fact that the shearing fixed impact knife block group 37 is an integral device that is affected by the rack buffer spring 371, combined with the particularity of the sundry and metal material, this part of the sundry and metal material flows into the sundry and metal discharge outlet 38 through the action of wind suction and other actions, and then is transported to the stock bin through intelligent sorting and wind and mechanical transportation, the inlet of the return-feeding area can also be set to 300-400 mm according to needs, and the crushed material discharge area 39 can also be set to 400-650 mm according to needs to achieve the desired effect, wherein the fixed crushing knives at each part perform shearing and crushing on a small amount of return material.

[0034] The working process of this application is as follows: first, construction solid waste first enters the homogenization treatment yard, the raw solid waste materials in the homogenization treatment yard are homogenized and sorted by sorting equipment, and after the homogenization and sorting process, preliminary manual sorting is carried out again to select hazardous waste, and after the preliminary homogenization and sorting process, it is sent to the raw material homogenization bin by conveying equipment for buffering and homogenization, and then enters the plate feeder; After the materials are homogenized and sorted, they are evenly and continuously sent to the double-shaft solid waste shearing roller crusher 1 by the plate feeder for coarse shearing sorting and crushing. The processed materials are sent to the heavy screening equipment for screening by the conveyor. After screening by the heavy screening equipment, the materials are divided into two types of materials. Materials larger than 100mm enter the intelligent sorting and disposal workshop, and materials smaller than 100mm enter the solid waste ladder relaxation screen 2. The materials are separated into recycled materials of 0-15mm, 15-40mm, and 40-100mm by the solid waste ladder relaxation screen 2. The recycled materials of 0-15mm are deeply processed into cementitious materials, the recycled materials of 15-40mm enter the first-level solid waste disposal sorting machine, and the recycled materials of 40-100mm enter the first-level horizontal solid waste disposal sorting machine. The light impurities are selected again by the first-level horizontal solid waste disposal sorting machine and transported to the light material warehouse. After passing through the first-level solid waste disposal sorting machine, the materials automatically flow into the intelligent sorting and disposal workshop to select organic impurities such as bamboo, wood, rubber and plastic. Finally, the material enters the roller impact solid waste disposal grading crusher 3 for crushing, and the crushed material enters the finished product sorting device for screening. After the crushing, the material enters the finished product sorting device for screening. After passing through the finished product sorting device, the material is divided into 0-5mm, 5-10mm, 10-30mm and larger than 30mm recycled sand powder and recycled aggregate. The recycled material larger than 30mm is selected by the secondary strong solid waste disposal sorting machine to select the light material and transport it to the light material bin, and then transported into the roller impact solid waste disposal grading crusher 3 for recycling treatment. The 5-10mm and 10-30mm recycled sand powder and recycled aggregate are respectively transported into the secondary strong solid waste disposal sorting machine to select the light material and transport it to the light material bin, and then transported into the recycled sand powder and recycled aggregate bin; 0-5mm is transported to the regenerated sand silo and sent to the production and processing equipment of recycled products. It is input into the recycled material silo, recycled aggregate silo and regenerated sand silo according to demand. The regenerated sand powder and recycled aggregate are transported to the regenerated sand powder finished product production module through the conveying device. The recycled finished product production module can select one or more according to demand, including lightweight foamed soil production equipment, recycled body material module production equipment, sponge permeable brick production equipment, wall material production system, recycled cementitious material production equipment, and second concrete mixing production equipment.

[0035] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A method for producing recycled sand powder concrete, characterized in that: The production method steps are as follows: Homogenization pretreatment: Construction solid waste first enters the homogenization treatment yard, where the raw solid waste materials are homogenized and sorted by sorting equipment. After the homogenization and sorting process, preliminary manual sorting is performed again to select hazardous waste. After the preliminary homogenization and sorting process, the solid waste is sent to the raw material homogenization bin by conveying equipment for buffering and homogenization before entering the plate feeder. Primary crushing and sorting: After the materials are homogenized and sorted, they are evenly and continuously sent to the double-shaft solid waste shear roller crusher (1) by the plate feeder for coarse shear sorting and crushing. The processed materials are sent to the heavy-duty screening equipment for screening by the conveyor. After the screening by the heavy-duty screening equipment, the materials are divided into two types of materials. The materials larger than 100mm enter the intelligent sorting and disposal workshop, and the materials smaller than 100mm enter the solid waste ladder relaxation screen (2); The materials are separated into recycled materials of 0-15mm, 15-40mm and 40-100mm by the solid waste step relaxation screen (2). The recycled materials of 0-15mm are further processed into cementitious materials, the recycled materials of 15-40mm enter the first-level solid waste disposal sorting machine, and the recycled materials of 40-100mm enter the first-level horizontal solid waste disposal sorting machine. The light impurities are again selected by the first-level horizontal solid waste disposal sorting machine and transported to the light material warehouse. After passing through the first-level solid waste disposal sorting machine, the materials automatically flow into the intelligent sorting and disposal workshop to select organic impurities such as bamboo, wood, rubber and plastic. Secondary crushing and sorting: Finally, the material enters the roller impact solid waste disposal grading crusher (3) for crushing, and the crushed material enters the finished product sorting device for screening; After passing through the finished product sorting device, the materials are divided into 0-5mm, 5-10mm, 10-30mm and larger than 30mm recycled sand powder and recycled aggregate. The recycled materials larger than 30mm are separated into light materials by the secondary strong solid waste disposal sorting machine and transported to the light material bin, and then transported into the roller impact solid waste disposal grading crusher (3) for recycling treatment. The 5-10mm and 10-30mm recycled sand powder and recycled aggregate are respectively transported into the secondary strong solid waste disposal sorting machine to separate the light materials and transport them to the light material bin, and then transported into the recycled sand powder and recycled aggregate bin; Regeneration processing: 0-5mm is transported to the regenerated sand bin and sent to the production and processing equipment of recycled products. According to demand, it is input into the recycled material bin, recycled aggregate bin and regenerated sand bin. The regenerated sand powder and recycled aggregate are transported to the regenerated sand powder finished product production module through the conveying device.

2. Production equipment for recycled sand powder concrete, applicable to the production method for recycled sand powder concrete according to claim 1, characterized in that: An automatic manipulator or an artificial intelligence iron and impurity removal device is provided between the heavy screening equipment selection screen and the double-shaft solid waste shearing roller crusher (1) and the solid waste step relaxation screen (2), and an automatic manipulator or an artificial intelligence iron and impurity removal device is also provided between the roller-type impact solid waste disposal grading crusher (3) and the finished product sorting device.

3. The production equipment of recycled sand powder concrete according to claim 1, characterized in that: An air purification device is installed in the homogenization field of the original solid waste materials to be processed, and physical dust collection and removal devices are installed at the shearing and crushing, grading and shaping crushing, relaxation and step screening, and dust points of the production line for negative pressure dust removal and air purification devices for air purification. The recycled finished product production module can select one or more according to demand, including lightweight foamed soil production equipment, recycled body material module production equipment, sponge permeable brick production equipment, wall material production system, recycled cementitious material production equipment, and second concrete mixing production equipment.

4. The production equipment of recycled sand powder concrete according to claim 1, characterized in that: A distributor (11) is provided on the top of the double-shaft solid waste shearing roller crusher (1), and a concave roller body (16) and a convex roller body (14) are connected via a rotating shaft inside the double-shaft solid waste shearing roller crusher (1), and uniformly distributed concave scissor tooth blocks (161) arranged in a ring array are provided on the outside of the concave roller body (16), and uniformly distributed convex scissor tooth blocks (141) that engage with the uniformly distributed concave scissor tooth blocks (161) are arranged in a ring array on the outside of the convex roller body (14).

5. The production equipment for recycled sand powder concrete according to claim 4, characterized in that: A filter plate (15) is provided below each of the concave roller body (16) and the convex roller body (14), and a debris metal discharge port (12) is provided in the gap between the concave roller body (16), the convex roller body (14) and the filter plate (15). A filter material discharge port (13) is provided between the two groups of filter plates (15), and the filter material discharge port (13) is aligned with the distributor (11) and the center lines of the concave roller body (16) and the convex roller body (14).

6. The production equipment of recycled sand powder concrete according to claim 1, characterized in that: The top of the solid waste step-down screen (2) is provided with a screening feed port (21), the outside of the solid waste step-down screen (2) is connected to an oscillating motor (28), and the inside of the solid waste step-down screen (2) is provided with a debris and metal block discharge area (22), a bulk material screening area (23), a medium crushed material screening area (24), a No. 1 fine crushed material screening area (25), and a No. 2 fine crushed material screening area (26) from left to right.

7. The production equipment for recycled sand powder concrete according to claim 6, characterized in that: A fine material transfer screening area (27) is provided on the top of the second fine material screening area (26), the debris and metal block discharge area (22) and the bulk material screening area (23) are both obliquely Z-shaped, and a grading sorting screen plate (221) is provided at the bottom of the upper half of the debris and metal block discharge area (22), and a specific gravity sorting screen plate (222) is provided at the bottom of the lower half of the debris and metal block discharge area (22).

8. The production equipment for recycled sand powder concrete according to claim 7, characterized in that: A medium crushed material sorting screen (231) is provided between the bulk material screening area (23) and the fine crushed material transfer screening area (27), a fine crushing sorting screen (241) is provided between the medium crushed material screening area (24), the bulk material screening area (23), and the first fine crushed material screening area (25), and a fine crushing sorting screen (241) is also provided between the second fine crushed material screening area (26) and the fine crushed material transfer screening area (27).

9. The production equipment of recycled sand powder concrete according to claim 1, characterized in that: The top of the roller-type impact solid waste disposal grading crusher (3) is provided with a crushing inlet (31), and the bottom of the roller-type impact solid waste disposal grading crusher (3) is provided with a fixed return material impact blade block device (36), a plurality of groups of scissor-type fixed return material impact blade blocks (361) are arranged in an array on the fixed return material impact blade block device (36), and a debris and metal discharge port (38) and a crushed material discharge area (39) are respectively provided on both sides of the fixed return material impact blade block device (36).

10. The production equipment for recycled sand powder concrete according to claim 9, characterized in that: A mixing feed box (32) is provided in the roller-type impact solid waste disposal grading crusher (3), and a scissor-type rotor assembly (33) is provided below the mixing feed box (32). The outer side of the scissor-type rotor assembly (33) is provided with movable rotor scissor blocks (331) arranged in a ring array. The inner walls on both sides of the roller-type impact solid waste disposal grading crusher (3) are respectively connected to a scissor-type fixed impact blade block group (37) and a fixed grading crushing blade group (34). A plurality of groups of buffer springs (371) are connected between the scissor-type fixed impact blade block group (37) and the roller-type impact solid waste disposal grading crusher (3). An external hydraulic cylinder (35) is connected between the scissor-type fixed impact blade block group (37) and the roller-type impact solid waste disposal grading crusher (3).

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