Artificial machine-made sand circulating sand making process

Abstract

The invention relates to the field of artificial machine-made sand, and particularly discloses an artificial machine-made sand circulating sand-making process, which is characterized in that a coarse crushing workshop, a semi-finished product warehouse, a medium and fine crushing workshop, a first screening workshop, a shaping sand-making workshop, a second screening workshop, a sewage treatment workshop, a finished product coarse aggregate bin and a finished product bin are arranged to realize a closed loop, so that the requirement of large-scale production can be met; the vertical shaft crusher and the optimized sand making device are arranged in the shaping sand making workshop, so that the crushing efficiency is improved, the product granularity is optimized, and the product quality is improved; sand materials are crushed through the crusher, the sand materials are screened through the first screening workshop and the second screening workshop, the qualified sand materials are stored in the coarse sand material bin and the finished product sand bin, and the rest sand materials are returned to be crushed and then screened through the first screening workshop and the second screening workshop to form a closed loop; and the sand materials which are screened in the second screening workshop and have small particle sizes are conveyed to the optimized sand making device to be optimized, so that the uniformity of the particle sizes of the sand particles is improved, and the overall quality of the sand particles is improved.

Description

Technical Field

[0001] The present invention relates to the field of artificial manufactured sand, and particularly to a circulating sand-making process for artificial manufactured sand. Background Art

[0002] In the main project of a super-large hydropower station, a large-scale supply of finished aggregate and cofferdam cushion material is required, and a sand and gravel processing system with a large processing capacity and strong aggregate production capacity needs to be built near the main project of the super-large hydropower station.

[0003] However, traditional circulating closed-loop sand-making processes for artificial manufactured sand often adopt old technologies and equipment. These devices have high energy consumption during crushing and screening, which is not conducive to energy conservation and emission reduction; due to equipment selection and technical limitations, traditional systems are difficult to accurately control the particle size and gradation of products, resulting in uneven product quality; the utilization rate of some traditional raw materials is low, and a closed loop is not achieved in the process flow, leading to waste of resources and failure to fully utilize their potential value; at the same time, the production efficiency of traditional systems is low and it is difficult to meet the needs of large-scale production.

[0004] Therefore, there is an urgent need for a circulating closed-loop sand-making process and operation and processing method for artificial manufactured sand to overcome the above problems and achieve a circulating closed-loop sand-making process and method for artificial manufactured sand with high efficiency, high quality and high productivity. Summary of the Invention

[0005] The purpose of the present invention is to provide a circulating sand-making process for artificial manufactured sand, which solves the problems that it is difficult to accurately control the particle size and gradation of products during traditional sand-making, resulting in uneven product quality, and a closed loop is not achieved in the process, leading to waste of resources.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a circulating sand-making process for artificial manufactured sand, including the following steps; Step S1, the raw material with a particle size greater than 150 mm mined from the stockyard is transported by truck to the coarse crushing unloading platform, and then transported to the jaw crusher through the bar feeder for crushing, and after crushing, it is sent to the semi-finished product storage bin; the raw material with a particle size less than 150 mm mined from the stockyard is directly transported to the semi-finished product storage bin through the bar feeder; Step S2, the raw materials in the semi-finished product storage bin are transported to the medium and fine crushing workshop and crushed in the medium crushing cone crusher and the fine crushing cone crusher; Step S3, the sand materials crushed in the medium and fine crushing workshop are sent to the first screening workshop, and the sand materials screened and formed in the first screening workshop enter the finished coarse sand bin for storage, and the unformed sand materials enter the shaping sand-making workshop or the medium crushing cone crusher for further crushing; Step S4: The sand material after being medium-crushed in the medium-cone crusher is sieved again in the first screening workshop to complete the closed loop. The sand material entering the shaping and sand-making workshop is used by the vertical shaft crusher for coarse sand material shaping and auxiliary sand making. The crushed sand material is discharged to the second screening workshop for screening. The formed sand material enters the finished coarse sand bin for storage, and the unformed sand material is transported to the optimized sand-making device for crushing and processing.

[0007] As a further technical solution of the above solution, the finished coarse sand bin includes a large stone bin, a medium stone bin, a small stone bin and a pea stone bin. The large stone bin stores sand material with a particle size of 40 - 80 mm; the medium stone bin stores sand material with a particle size of 20 - 40 mm; the small stone bin stores sand material with a particle size of 5 - 20 mm; the pea stone bin stores sand material with a particle size of 5 - 10 mm.

[0008] As a further technical solution of the above solution, in step S3, the sand material crushed by the medium-cone crusher is sent to the first screening workshop. The sand material with a particle size of 20 - 80 mm screened out is transported to the large stone bin and the medium stone bin through a conveyor. The sand material with a particle size greater than 80 mm screened out and the excess 40 - 80 mm sand material after the finished product enter the fine-cone crusher for crushing. The crushed sand material is transported back to the first screening workshop for screening. After screening, the sand material with a particle size greater than 80 mm is returned to the fine-cone crusher for continuous crushing to form a closed loop. The sand material with a particle size of 40 - 80 mm is transported to the finished coarse aggregate bin with intact particle size. The sand material with a particle size of 3 - 40 mm enters the shaping and sand-making workshop through a dewatering screen. The sand material with a particle size less than 3 mm enters the finished sand bin after being washed by a sand washer and dehydrated by a dewatering screen.

[0009] As a further technical solution of the above solution, in step S4, the 3 - 40 mm sand material screened by the second screening workshop is transported to the finished coarse aggregate bin. The sand material with a particle size less than 3 mm is transported to the sand washer for water washing and then transported through a dewatering screen and a fine sand recovery machine to enter the finished sand bin.

[0010] As a further technical solution of the above solution, in step S4, the 3 - 5 mm and 5 - 10 mm sand material screened by the second screening workshop is sent to the optimized sand-making device for crushing. The material with a particle size less than 3 mm after crushing enters the finished sand bin through water washing and dehydration.

[0011] As a further technical solution of the above solution, the optimized sand-making device includes a sand-making tank, a bracket, a crushing component, a particle size optimization component and a transportation component. The sand tank is arranged on the upper part of the bracket; the crushing component is arranged on the upper part of the sand tank and is used for crushing the sand material; the particle size optimization component is arranged in the sand tank, below the crushing component, and optimizes the particle size of the crushed sand grains; the transportation component is arranged below the particle size optimization component and is used for receiving the optimized sand grains for transportation.

[0012] As a further technical solution of the above solution, the crushing component includes a crushing tank, a support baffle, a first motor, a crushing roller, a sieve plate and a discharge port; the crushing tank is arranged at the top of the sand tank, and the support baffle is arranged on the left and right sides of the crushing tank; the first motor is arranged on the side wall of the crushing tank, the output shaft is inserted into the crushing tank, and is connected to the left end of the crushing roller, and the right end of the crushing roller is rotatably connected to the right side wall of the crushing tank; the sieve plate is arranged below the crushing tank, and the discharge port is arranged below the sieve plate.

[0013] As a further technical solution of the above solution, the particle size optimization component includes a second motor, a rotating rod, a stirring rod, a screening rod and a V-shaped collection tank; the second motor is arranged in the sand tank, the rotating rod is vertically arranged in the upper part of the sand tank, the stirring rods are distributed along the circumference of the rotating rod, the second motor drives the rotating rod to rotate, and the stirring rods follow the rotating rod to rotate for fully stirring the sand material; the screening rod is arranged in the sand tank to separate sand materials with different particle sizes; the V-shaped collection tank is arranged below the screening rod to collect and transport the separated sand materials.

[0014] As a further technical solution of the above solution, the transportation component includes a third motor, a transportation tank, a rotating rod, a spiral blade and a discharge port; the upper end of the transportation tank is open to receive the sand material optimized by the particle size optimization component; the third motor is arranged on the right side wall of the transportation tank, and the output shaft is inserted into the transportation tank; the rotating rod is arranged in the transportation tank and is connected to the output shaft of the third motor, and the spiral blade is arranged on the rotating rod; the discharge port is arranged at the left end of the transportation tank.

[0015] As a further technical solution of the above solution, it further includes a refinement component. The refinement component 6 is connected to the side wall of the crushing tank through a hose, and a second fan is arranged in the hose; the refinement component includes a square box, a first fan, a vibrating rod, a refinement trough plate and a fourth motor; the refinement trough plate is arranged in the square box, the vibrating rod passes through the refinement trough plate, a fourth motor is arranged on the side wall of the vibrating rod, and the fourth motor is used to drive the vibrating rod and the refinement trough plate to vibrate; the first fan is arranged at the bottom of the direction box.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention crushes the sand material by a crusher, uses a first screening workshop and a second screening workshop to screen the sand material, the compliant sand material is stored in the coarse sand bin and the finished sand bin, and the remaining sand material is returned for crushing and then screened by the first screening workshop and the second screening workshop to form a closed loop; for the sand material with a smaller particle size screened by the second screening workshop, it is transported to the optimized sand making device for optimization, which improves the uniformity of the sand particle size and the overall quality of the sand particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a process schematic diagram of the present invention.

[0018] Figure 2It is a schematic three-dimensional structure diagram of a particle size optimization device.

[0019] Figure 3 It is a schematic structure diagram of the refined components of the particle size optimization device when opened.

[0020] Figure 4 It is a schematic three-dimensional structure diagram of the crushing component.

[0021] Figure 5 It is a schematic three-dimensional structure diagram of the particle size optimization component.

[0022] Figure 6 For Figure 5 The enlarged schematic diagram of the structure at position A in

[0023] Figure 7 It is a schematic longitudinal sectional structure diagram of the sand making tank.

[0024] Figure 8 For Figure 3 The enlarged schematic diagram of the structure at position B in

[0025] The explanations of each label in the figure are as follows: 1 - sand making tank 1; 2 - groove sleeve; 3 - crushing component; 301 - crushing groove; 302 - support baffle; 303 - first motor; 304 - crushing roller; 305 - transmission track; 306 - sieve funnel; 307 - inclined plate; 308 - sieve plate; 309 - trapezoidal groove; 4 - bracket; 5 - support foot; ́6 - refining component; 601 - sealing plate; 602 - refining box; 603 - square box; 604 - refining groove plate; 605 - second motor; 606 - vibrating rod; 607 - first fan; 7 - inner pipeline; 8 - second fan; 9 - hose; 10 - particle size optimization component; 1001 - handle plate; 1002 - rotating rod; 1003 - stirring rod; 1004 - third motor; 1005 - driving gear; 1006 - trapezoidal plate; 1007 - screening rod one; 1008 - V-shaped scraper; 1009 - push rod; 1010 - connecting rod; 1011 - bottom plate; 1012 - pushing shaft; 1013 - screening rod two; 1014 - driver; 1101 - fourth motor; 1102 - spiral groove; 1103 - transmission groove; 13 - hanging bucket. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems to be solved, the technical features constituting the technical solution, and the technical effects brought.

[0027] As Figures 1 - 8 shown, an artificial mechanism sand recycling sand making process includes the following steps; Step S1: The raw materials with a particle size greater than 150 mm after quarrying are transported by trucks to the coarse crushing discharge platform, then transported by a bar feeder to a jaw crusher for crushing, and after crushing, they are sent to the semi-finished material warehouse; the raw materials with a particle size less than 150 mm after quarrying are directly transported to the semi-finished material warehouse by a bar feeder. Step S2: The raw materials in the semi-finished material warehouse are transported to the medium and fine crushing workshop and crushed in a medium crushing cone crusher and a fine crushing cone crusher. Step S3: The sand materials crushed in the medium and fine crushing workshop are sent to the first screening workshop. The sand materials screened and formed in the first screening workshop enter the finished coarse sand warehouse for storage, and the unformed sand materials enter the shaping and sand making workshop or the medium crushing cone crusher for further crushing. Step S4: The sand materials crushed in the medium crushing cone crusher are screened again in the first screening workshop to complete the closed loop; the sand materials entering the shaping and sand making workshop are shaped into coarse sand and assisted in sand making by a vertical shaft crusher. The crushed sand materials are discharged to the second screening workshop for screening. The formed sand materials enter the finished coarse sand warehouse for storage, and the unformed sand materials are transported to an optimized sand making device for crushing and processing.

[0028] The finished coarse sand warehouse includes a large stone warehouse, a medium stone warehouse, a small stone warehouse, and a pea stone warehouse; the large stone warehouse stores sand materials with a particle size of 40 - 80 mm; the medium stone warehouse stores sand materials with a particle size of 20 - 40 mm; the small stone warehouse stores sand materials with a particle size of 5 - 20 mm; the pea stone warehouse stores sand materials with a particle size of 5 - 10 mm.

[0029] In step S3, the sand materials crushed by the medium crushing cone crusher are sent to the first screening workshop. The sand materials with a particle size of 20 - 80 mm screened out are transported to the large stone warehouse and the medium stone warehouse by a conveyor; the sand materials with a particle size greater than 80 mm screened out and the surplus 40 - 80 mm sand materials after the finished products enter the fine crushing cone crusher for crushing, and the crushed sand materials are transported back to the first screening workshop for screening; after screening, the sand materials with a particle size greater than 80 mm are returned to the fine crushing cone crusher for continuous crushing to form a closed loop; the materials with a particle size of 40 - 80 mm are transported to the finished coarse aggregate warehouse with intact particle size; the sand materials with a particle size of 3 - 40 mm enter the shaping and sand making workshop through a dewatering screen; the sand materials with a particle size less than 3 mm enter the finished sand warehouse after sand washing by a sand washer and dehydration by a dewatering screen.

[0030] In step S4, the 3 - 40 mm sand materials screened by the second screening workshop are transported to the finished coarse aggregate warehouse; the sand materials with a particle size less than 3 mm are transported to a sand washer for water washing and then transported through a dewatering screen and a fine sand recovery machine into the finished sand warehouse.

[0031] In step S4, the 3 - 5 mm and 5 - 10 mm sand materials screened by the second screening workshop are sent to the optimized sand making device for crushing; the materials with a particle size less than 3 mm after crushing enter the finished sand warehouse after water washing and dehydration.

[0032] The optimized sand making device includes a sand making tank, a bracket, a crushing component, a particle size optimization component, and a transportation component; The sand tank is arranged at the upper part of the bracket; the crushing component is arranged at the upper part of the sand tank and is used for crushing sand materials; the particle size optimization component is arranged inside the sand tank, below the crushing component, and optimizes the particle size of the crushed sand grains; the transportation component is arranged below the particle size optimization component and is used to catch and transport the optimized sand grains.

[0033] The crushing component includes a crushing groove, a support baffle, a first motor, a crushing roller, a sieve plate, and a discharge port; the crushing groove is arranged at the top of the sand tank, and the support baffle is arranged on the left and right sides of the crushing groove; the first motor is arranged on the side wall of the crushing groove, and the output shaft is inserted into the crushing groove and connected to the left end of the crushing roller, and the right end of the crushing roller is rotatably connected to the right side wall of the crushing groove; the sieve plate is arranged below the crushing groove, and the discharge port is arranged below the sieve plate.

[0034] The particle size optimization component includes a second motor, a rotating rod, a stirring rod, a screening rod, and a V-shaped collection tank; the second motor is arranged inside the sand tank, the rotating rod is vertically arranged at the upper part inside the sand tank, the stirring rods are distributed along the circumference of the rotating rod, the second motor drives the rotating rod to rotate, and the stirring rods rotate with the rotating rod to fully stir the sand materials; the screening rod is arranged inside the sand tank to separate sand materials with different particle sizes; the V-shaped collection tank is arranged below the screening rod to collect and transport the separated sand materials.

[0035] The transportation component includes a third motor, a transportation tank, a rotating rod, a spiral blade, and a discharge port; the upper end of the transportation tank is open to receive the sand materials optimized by the particle size optimization component; the third motor is arranged on the right side wall of the transportation tank, and the output shaft is inserted into the transportation tank; the rotating rod is arranged inside the transportation tank and is connected to the output shaft of the third motor, and the spiral blade is arranged on the rotating rod; the discharge port is arranged at the left end of the transportation tank.

[0036] It further includes a refinement component. The refinement component 6 is connected to the side wall of the crushing groove through a hose, and a second fan is arranged inside the hose; the refinement component includes a square box, a first fan, a vibrating rod, a refinement trough plate, and a fourth motor; the refinement trough plate is arranged inside the square box, the vibrating rod passes through the refinement trough plate, a fourth motor is arranged on the side wall of the vibrating rod, and the fourth motor is used to drive the vibrating rod and the refinement trough plate to vibrate; the first fan is arranged at the bottom of the square box.

[0037] This embodiment provides an artificial mechanism sand circulation closed-loop sand making process. The artificial mechanism sand circulation closed-loop sand making process includes a primary crushing workshop, a semi-finished product warehouse, a medium and fine crushing workshop, a first screening workshop, a shaping sand making workshop, a second screening workshop, a sewage treatment workshop, a finished coarse aggregate bin, and a finished product bin.

[0038] The primary crushing workshop includes a grizzly feeder and a jaw crusher. The raw materials with a particle size greater than 150 mm after quarrying are transported to the primary crushing discharge platform by dump trucks, then transported to the jaw crusher through the grizzly feeder for crushing, and after crushing, they are sent to the semi-finished product storage bin. The raw materials with a particle size less than 150 mm after quarrying are transported to the semi-finished product storage bin through the grizzly feeder.

[0039] Preferably, the jaw crusher is of model CJ125, with 2 units set, and the power of each unit is 200 kw. The jaw crusher has the following advantages: 1. Large crushing ratio: The jaw crusher can handle larger pieces of materials, and the crushing ratio is usually between 3 and 6, and some can even reach more than 10, which can crush large pieces of materials into smaller particle sizes at one time; 2. Strong adaptability: The jaw crusher can handle various materials with different hardness and strength, such as limestone, granite, basalt, iron ore, etc., and has strong adaptability to different materials; 3. Low energy consumption: Compared with other types of crushers, the jaw crusher has lower energy consumption when processing the same materials.

[0040] The medium and fine crushing workshop includes a medium crushing cone crusher and a fine crushing cone crusher. The raw materials in the semi-finished product storage bin are transported to the medium and fine crushing workshop for crushing.

[0041] Preferably, the medium crushing cone crusher is of model RC50-340, with 2 units set, and the power of each unit is 315 kw; the fine crushing cone crusher is of model RC50-150, with 2 units set, and the power of each unit is 250 kw. The cone crusher has the following advantages: 1. Uniform product particle size: The cone crusher adopts the principle of lamination crushing, making the particle size of the crushed product more uniform and reducing the generation of needle-like and flaky materials; 2. Good environmental protection performance: The cone crusher generates less dust during the crushing process, which is beneficial to environmental protection.

[0042] The first screening workshop includes a first circular vibrating screen, a sand washer, and a dewatering screen. The first circular vibrating screen screens the raw materials from the cone crusher. Part of the raw materials directly flow to the finished coarse aggregate bin, part of the raw materials flow to the sand washer and then to the dewatering screen and the fine sand recovery machine, and finally flow to the finished coarse aggregate bin; part of the raw materials flow back to the medium and fine crushing workshop for further crushing, forming a closed loop; part of the raw materials flow to the shaping and sand making workshop for sand making.

[0043] Furthermore, the first circular vibrating screen is provided with a first three-layer screen mesh, and the corresponding screen hole sizes of the first three-layer screen mesh are 80×80 mm, 40×40 mm, and 3×3 mm.

[0044] Furthermore, the shaping and sand making workshop includes a vertical shaft crusher and a high-pressure pair-roll crusher; the raw materials from the first screening workshop are crushed by using the vertical shaft crusher and the high-pressure pair-roll crusher.

[0045] Among them, the vertical shaft crusher crushes, shapes and grinds the raw materials entering the crusher through the rotor, realizes independent crushing and high-density self-generated crushing, effectively improves the particle shape of the finished sand and improves the production efficiency of fine aggregate. The vertical shaft crusher is composed of a vertical shaft impact crusher, a vibrating screen, a dust removal module, a conveying module, etc., making the technical equipment of the sand making platform develop towards the direction of green, harmonious, intelligent and service-oriented. The vertical shaft shaping and sand making system enables the crushing host to have multiple effects of "crushing, shaping, sand making and grading", achieving the best crushing particle shape, and configuring the vibrating screen and off-line pulse dust removal with ash cleaning to collect dust and ash centrally. Finally, the quality of the finished aggregate and finished sand produced is high, and clean production can be realized.

[0046] Furthermore, the second screening workshop includes a second circular vibrating screen, the sand washer, the dewatering screen and the fine sand recovery machine; the second circular vibrating screen screens the raw materials from the shaping and sand making workshop. Some of the raw materials directly flow to the finished coarse aggregate bin, and some of the raw materials flow to the sand washer and then to the dewatering screen and the fine sand recovery machine. Among them, some of the raw materials flow to the waste pile, and some of the raw materials flow to the finished sand bin; some of the raw materials flow back to the shaping and sand making workshop to continue crushing, forming a closed loop.

[0047] Furthermore, the second circular vibrating screen is provided with a second three-layer screen; the screen hole sizes corresponding to the second three-layer screen are 20×20mm, 10×10mm, and 3×3mm.

[0048] Specifically, a closed-loop process is formed in this system. The closed-loop system can re-incorporate the waste materials and tailings generated during the production process into the production process, realize the recycling of resources, reduce raw material waste. At the same time, through the closed-loop process, the raw materials can be utilized to the maximum extent, and even small particles can be effectively utilized, improving the overall raw material utilization rate. Secondly, by recycling and reusing the materials, the raw material procurement cost and waste treatment cost can be reduced, thereby reducing the overall production cost. Finally, the closed-loop system helps to control the product quality. Through continuous recycling and optimization, the stability and consistency of the final product can be ensured.

[0049] Furthermore, the semi-finished product warehouse is used to store the aggregate after and before crushing from the coarse crushing workshop.

[0050] Further, the finished coarse aggregate bin includes a large stone bin, a medium stone bin, a small stone bin, and a pea stone bin; wherein the large stone bin stores aggregates with a particle size of 40 - 80 mm; the medium stone bin stores aggregates with a particle size of 20 - 40 mm; the small stone bin stores aggregates with a particle size of 5 - 20 mm; the pea stone bin stores aggregates with a particle size of 5 - 10 mm, and the finished product bin stores sand and gravel with a particle size of 0 - 5 mm.

[0051] This embodiment also provides an artificial mechanism sand circulating closed-loop sand making process, including the following devices: The artificial mechanism sand circulating closed-loop sand making process includes a primary crushing workshop, a semi-finished product bin, an intermediate and fine crushing workshop, a first screening workshop, a shaping and sand making workshop, a second screening workshop, a sewage treatment workshop, a finished coarse aggregate bin, and a finished product bin; The primary crushing workshop includes a grizzly feeder and a jaw crusher; the raw materials with a particle size greater than 150 mm after being mined from the quarry are transported to the primary crushing unloading platform by a dump truck and then transported to the jaw crusher through the grizzly feeder for crushing, and after crushing, they are sent to the semi-finished product bin; the raw materials with a particle size less than 150 mm after being mined from the quarry are transported to the semi-finished product bin through the grizzly feeder; The intermediate and fine crushing workshop includes an intermediate crushing cone crusher and a fine crushing cone crusher; the raw materials in the semi-finished product bin are transported to the intermediate and fine crushing workshop for crushing; The first screening workshop includes a first circular vibrating screen, a sand washer, and a dewatering screen; the first circular vibrating screen screens the raw materials from the cone crusher, part of the raw materials directly flow to the finished coarse aggregate bin, part of the raw materials flow to the sand washer and then to the dewatering screen and the fine sand recovery machine, and finally flow to the finished coarse aggregate bin; part of the raw materials re-flow to the intermediate and fine crushing workshop for continuous crushing, forming a closed loop; part of the raw materials flow to the shaping and sand making workshop for sand making; The shaping and sand making workshop includes a vertical shaft crusher and a high-pressure pair-roll crusher; the raw materials from the first screening workshop are crushed by using the vertical shaft crusher and the high-pressure pair-roll crusher; The second screening workshop includes a second circular vibrating screen, the sand washer, the dewatering screen, and the fine sand recovery machine; the second circular vibrating screen screens the raw materials from the shaping and sand making workshop, part of the raw materials directly flow to the finished coarse aggregate bin, part of the raw materials flow to the sand washer and then to the dewatering screen and the fine sand recovery machine, part of the raw materials flow to the finished sand bin, and part of the raw materials re-flow to the shaping and sand making workshop for continuous crushing, forming a closed loop.

[0052] An artificial mechanism sand circulating closed-loop sand making process includes the following steps: First step: Use the dump truck to transport the raw materials to the coarse material workshop. The raw materials with a particle size greater than 150 mm are evenly transported to the jaw crusher through the bar vibrating feeder for crushing, and then transported to the semi-finished material warehouse after crushing. The raw materials with a particle size less than 150 mm are transported to the semi-finished material warehouse together with the materials after coarse crushing from the bar vibrating feeder and temporarily stored there. Second step: Use the conveyor and the bar vibrating feeder to transport the raw materials in the semi-finished material warehouse to the medium crushing workshop. Use the medium and fine crushing workshop to crush the transported raw materials. First, crush them through the medium crushing cone crusher. Third step: Transport the raw materials crushed by the medium crushing cone crusher to the first circular vibrating screen in the first screening workshop through the conveyor for screening. The raw materials with a particle size of 20 - 80 mm can be directly transported to the large stone warehouse and the medium stone warehouse through the conveyor. The raw materials with a particle size of 80 - 40 mm enter the large stone warehouse. The raw materials with a particle size of 40 - 20 mm enter the medium stone warehouse. The materials with a particle size greater than 80 mm screened out and the redundant 40 - 80 mm materials after the finished products enter the fine crushing cone crusher. The materials crushed by the fine crushing cone crusher return to the first screening workshop for screening again. Fourth step: After screening, the materials with a particle size greater than 80 mm are continuously returned to the fine crushing cone crusher for further crushing to form a closed loop. If the particle shape of the materials with a particle size of 40 - 80 mm is intact, they are directly transported to the finished coarse aggregate warehouse, and part of the materials are circulated to the fine crushing cone crusher for further crushing to form a closed loop. The materials with a particle size of 3 - 40 mm enter the shaping and sand making workshop after passing through the dewatering screen. The materials with a particle size less than 3 mm or 5 mm enter the finished sand warehouse after sand washing by the sand washer, dehydration by the dewatering screen, and recovery by the fine sand recovery machine. Fifth step: Use the vertical shaft crusher in the shaping and sand making workshop to carry out coarse aggregate shaping and auxiliary sand making on the materials with a particle size of 5 - 40 mm from the main screening workshop. Among them, the vertical shaft crusher accelerates the materials by using a high-speed self-rotating rotor and shoots them out from the channel ejection cavity opening to impact with the crushing cavity, so that the materials are broken by the impact. When using the vertical shaft crusher for sand making, the sand and stone have a good particle shape and a low unit energy consumption. The crushed materials are discharged from the discharge hopper of the vertical shaft crusher and transported to the second screening workshop through the conveyor for screening, and form a closed circuit with the second screening workshop, that is, the crushed stones larger than 5 mm and part of the coarse sand with a particle size of 3 - 5 mm are returned to the vertical shaft impact crusher for further crushing and processing, and a small part of the redundant materials with a particle size of 20 - 40 mm are crushed to less than 20 mm. Sixth step: Part of the materials with a particle size of 20 - 40 mm from the second screening workshop are transported as finished products to the finished coarse aggregate bin, and the excess part is recycled back to the shaping and sand making workshop and continues to enter the vertical shaft crusher for crushing to form a closed loop; the materials with a particle size of 5 - 20 mm are transported by the conveyor to the finished coarse aggregate bin for storage; after the excess part of the materials with a particle size of 5 - 20 mm is combined with the return materials with a particle size of 20 - 40 mm, they are transported to the shaping and sand making workshop for cyclic crushing to form a closed loop; the materials with a particle size less than 3 mm or 5 mm are transported to the sand washer below for water washing, and after passing through the dewatering screen and fine sand recovery machine, they are transported into the finished sand bin yard, and part of the raw materials flow to the waste pile.

[0053] During the working process of the vertical shaft crusher, the following points need to be accurately grasped: 1. Feed particle size: Ensure that the feed particle size meets the equipment requirements to avoid the entry of materials that are too large or too small, so as not to affect the crushing effect and the service life of the equipment; 2. Rotor speed: The rotor speed directly affects the crushing effect and the discharge particle size, and needs to be adjusted appropriately according to the properties of the materials and the crushing requirements; 3. Counter-attack plate gap: The gap between the counter-attack plate and the rotor needs to be adjusted according to the discharge particle size requirements. Too small a gap will increase wear, and too large a gap will affect the crushing effect; 4. Feed quantity and uniformity: Control the feed quantity and maintain uniform feeding to avoid equipment vibration and poor crushing effect caused by uneven material distribution.

[0054] Seventh step: Transport part of the materials with a particle size of 5 - 10 mm and 3 - 5 mm from the second screening workshop to the optimized sand making device for crushing. The optimized sand making device builds a stable crushing space through the crushing component, and its crushing tank and support baffle. The crushing roller rotates at a high speed driven by the first motor to strongly crush the raw materials. Subsequently, the materials are transported through the sieve funnel and the transmission track, and are preliminarily screened by the sieve plate. The particle size optimization component plays a key role. The third motor drives the rotating rod and the stirring rod to rotate and stir the sand grains. The screening rod 1 and the screening rod 2 accurately screen and separate sand grains of different particle sizes under the drive of the driver. The V-shaped scraper and the push rod cooperate to push the sand grains. In the refinement component, the second motor makes the vibrating rod drive the refinement tank plate to vibrate at a high frequency to further refine the sand grains, and the first fan removes the fine powder. The close cooperation of multiple components significantly improves the uniformity of the sand grain particle size, greatly reduces the residual amount of large particles and the generation amount of fine powder, and effectively improves the overall quality of the sand grains.

[0055] After crushing, the materials with a particle size less than 3 mm or 5 mm enter the finished sand bin yard through steps such as screening, water washing, and dewatering in the second screening workshop, and part of the raw materials flow to the waste pile. The materials with a particle size greater than 3 mm or 5 mm continue to return to the optimized sand making device for crushing, and cycle repeatedly until the crushing particle size is less than 3 mm and then transported to the finished sand bin yard; a closed loop is formed.

[0056] The artificial manufactured sand circulating closed-loop sand making process provided by this embodiment can meet the needs of large-scale production by setting up a coarse crushing workshop, a semi-finished product warehouse, a medium and fine crushing workshop, a first screening workshop, a shaping and sand making workshop, a second screening workshop, a sewage treatment workshop, a finished coarse aggregate bin, and a finished product bin to achieve a closed loop; by setting up a vertical shaft crusher and optimizing the sand making device in the shaping and sand making workshop, and using them in combination, the crushing efficiency is improved, the product particle size is optimized, the energy consumption is reduced, and the product quality is improved; the provided sand and gravel aggregate processing method realizes the closed-loop sand making process on the basis of the artificial manufactured sand circulating closed-loop sand making process. The closed-loop sand making process improves the resource utilization efficiency, reduces the production cost, and reduces the environmental pollution.

[0057] Meanwhile, the present invention also discloses an optimized sand making device and its usage method. As Figures 3 - 8 shown, the optimized sand making device includes a crushing component 3 for crushing sand grains of different specifications, a refinement component 6 for adjusting the specifications, and a particle size optimization component 10 for improving the sand grain crushing efficiency. It is characterized in that: the bottom of the crushing component 3 is fixedly connected with a sand making tank 1, the inside of the sand making tank 1 is fixedly installed with the particle size optimization component 10, and one end of the bottom of the particle size optimization component 10 is fixedly provided with the refinement component 6; Furthermore, the crushing component 3 processes different sand grains, and the sand making tank 1 plays a bearing role. The particle size optimization component 10 improves the crushing efficiency and can finely process the sand grains. The refinement component 6 further adjusts the sand grain specifications. Each component operates in coordination to efficiently produce high-quality sand grains that meet the requirements.

[0058] The crushing component 3 includes a crushing groove 301, on the outer side of the crushing groove 301, front and rear opposite support baffles 302 are fixedly installed. Inside the support baffles 302, a crushing roller 304 is fixedly provided. The input end of the crushing roller 304 is fixedly connected with a first motor 303. A sieve groove is opened at the bottom of the support baffles 302. The bottom end of the support baffles 302 is fixedly connected with a sieve funnel 306. The bottom of the sieve funnel 306 is fixedly provided with a transmission track 305. On the outer side of the transmission track 305, left and right opposite inclined plates 307 are fixedly installed. The bottom of the transmission track 305 is fixedly connected with a trapezoidal groove 309. Inside the trapezoidal groove 309, a plurality of sieve plates 308 are fixedly connected; Furthermore, the crushing component 3 is the key starting part for sand making. The crushing tank 301 provides a crushing space for the raw materials. The support baffles 302 opposite to each other in the front and back ensure the structural stability and install the crushing rollers 304. The first motor 303 provides power for the crushing rollers 304 to rotate at high speed and break the raw materials. The sieve tank at the bottom of the support baffle 302 can conduct a preliminary screening. The crushed materials fall into the transmission track 305 through the sieve funnel 306. The inclined plate 307 on the outer side of the transmission track 305 prevents the materials from scattering. The sieve plate 308 in the trapezoidal groove 309 at its bottom conducts another screening. The sand grains meeting the particle size requirements pass through the sieve plate 308 and continue the subsequent process, while the large particles remain on the transmission track 305 and may be sent back to the crushing rollers 304 for re-crushing, thus ensuring that the particle size of the sand grains gradually meets the requirements.

[0059] Please refer to Figures 3 - 8 , the refinement component 6 includes a sealing plate 601. A refinement box 602 is fixedly connected to the outer side of the sealing plate 601. A square box 603 is fixedly connected to the top of the refinement box 602. A vibrating rod 606 is fixedly connected to the inside of the refinement box 602. A refinement trough plate 604 is fixedly connected to the middle of the outer side of the vibrating rod 606. A second motor 605 is fixedly arranged on the outer side of the refinement trough plate 604. A first fan 607 is fixedly arranged at the bottom of the second motor 605; Furthermore, it undertakes the important task of fine adjustment of sand grains in the sand making process. The sealing plate 601 is connected to the refinement box 602 to construct a relatively enclosed processing space, reducing dust spillage and material loss during the sand grain processing. The square box 603 is located at the top of the refinement box 602 and may be used for functions such as assisting in feeding or exhausting air. The vibrating rod 606 inside the refinement box 602 drives the refinement trough plate 604 to vibrate at a high frequency under the drive of the second motor 605. The sand grains rub and collide with each other due to the vibration on the refinement trough plate 604, further refining the sand grains and improving their particle size distribution. At the same time, the first fan 607 at the bottom of the second motor 605 generates an air flow when working, which can blow up and carry away some of the fine powder generated during the refinement process, further enhancing the purity and quality of the sand grains.

[0060] Please refer to Figures 3 - 8 , the particle size optimization component 10 includes a third motor 1004 and a handle plate 1001. A driving gear 1005 is fixedly connected to the bottom of the third motor 1004. A rotating rod 1002 is fixedly connected to the inside of the handle plate 1001. A plurality of stirring rods 1003 are fixedly connected to the outer periphery of the rotating rod 1002. A trapezoidal plate 1006 is fixedly arranged on one side of the handle plate 1001. The trapezoidal plates 1006 are vertically arranged on the right side of the bottom of the driving gear 1005. A bottom plate 1011 is arranged at the bottom of the trapezoidal plate 1006. A first screening rod 1007 is fixedly connected to the inside of the bottom plate 1011; Further, the third motor 1004 can be selected as a power source from the Y series three-phase asynchronous motors, which are energy-efficient and stable in performance. The driving gear 1005 connected to its bottom can transmit power. The rotating rod 1002 fixed in the handle plate 1001 and the stirring rod 1003 on its outer periphery rotate driven by the third motor 1004 to fully stir the incoming sand grains, making the sand grains more evenly distributed, which is beneficial for subsequent screening. The trapezoidal plate 1006 on one side of the handle plate 1001 plays a certain role in guiding and separating. The first screening rod 1007 is installed in the bottom plate 1011 below the trapezoidal plate 1006. After being stirred, the sand grains fall here. The first screening rod 1007 will preliminarily separate sand grains of different particle sizes according to the set gap, etc., and screen out the sand grains that do not meet the requirements, so that the particle size of the finally output sand grains can more accurately meet the production requirements.

[0061] Please refer to Figures 3 - 8 , the particle size optimization component 10 further includes a V-shaped scraper 1008. The top of the V-shaped scraper 1008 is fixedly connected to a connecting rod 1010. The bottom of the connecting rod 1010 is fixedly connected to a V-shaped scraper 1008. One side of the V-shaped scraper 1008 is fixedly connected to a push rod 1009. The top of the connecting rod 1010 is fixedly connected to the first screening rod 1007; Further, the V-shaped scraper 1008 is connected to the first screening rod 1007 through the connecting rod 1010 in terms of structure. Its special V-shaped design can effectively gather sand grains and prevent the sand grains from scattering everywhere during the screening process. When the third motor 1004 drives the relevant components to operate, after the sand grains are screened by the first screening rod 1007, the V-shaped scraper 1008 can push the sand grains remaining near it. The push rod 1009 assists the V-shaped scraper 1008 in the directional pushing of the sand grains, enabling the sand grains to move along a predetermined path, such as being pushed to the next processing link or a specific collection area, ensuring the orderly flow of the sand grains in the particle size optimization component 10 and improving the coherence and accuracy of the entire sand making process.

[0062] Please refer to Figures 3 - 8 , the top of the push rod 1009 is fixedly connected to a push shaft 1012. A plurality of second screening rods 1013 are fixedly connected to the outer periphery of the push shaft 1012. The top of the push shaft 1012 is movably connected to a driver 1014; Further, the driving shaft 1012 can rotate under the action of the driver 1014. The driver can use a three-phase asynchronous motor driver to drive a plurality of second screening rods 1013 to move. The second screening rods 1013 cooperate with the previous first screening rods 1007 to form a more refined screening system. When the sand grains reach here under the push of the V-shaped scraper 1008 and the push rod 1009, the second screening rods 1013 rotate to screen the sand grains again, further separating sand grains of different particle sizes and making the particle size distribution of the sand grains more accurate. The driver 1014 can accurately control the rotation speed, direction, start and stop of the driving shaft 1012, so as to flexibly adjust the screening action of the second screening rods 1013 according to the actual sand making requirements, ensuring that the entire particle size optimization process is carried out efficiently and accurately.

[0063] Please refer to Figures 3 - 8 , a transmission component is fixedly connected to the bottom of the sand making tank 1, and a bracket 4 and a support foot 5 are arranged on the outer periphery of the transmission component. The bracket 4 and the support foot 5 are respectively installed on the outside of the sand making tank 1; Further, the bracket 4 and the support foot 5 on the outer periphery of the transmission component play a very important supporting role. The bracket 4 and the support foot 5 are installed on the outside of the sand making tank 1 to build a stable structure, ensuring that the sand making tank 1 and the transmission component will not shake or displace due to factors such as vibration and material weight during operation. The reasonable layout and design of the bracket 4 and the support foot 5 can evenly disperse the weight of the entire device.

[0064] Please refer to Figures 3 - 8 , the transmission component includes a fourth motor 1101. An opening is provided in the middle of the fourth motor 1101, a transmission groove 1103 is fixedly connected to the top of the opening, and a spiral groove 1102 is fixedly connected to one side of the fourth motor 1101; Further, the transmission groove 1103 can receive the sand grains falling from above and make the sand grains start to be transmitted along a set path under the action of the fourth motor 1101. The spiral groove 1102 connected to one side of the fourth motor 1101 further enhances the transmission function. When the fourth motor 1101 operates, the spiral groove 1102 can use its spiral structure to push the sand grains forward like a screw conveyor, especially suitable for handling some sand grains with a certain viscosity or humidity, and can effectively prevent the sand grains from accumulating and blocking during transmission. This design combining the transmission groove 1103 and the spiral groove 1102 enables the transmission component to adapt to the transmission requirements of sand grains under different working conditions, ensuring that the sand grains are smoothly transported from the sand making tank 1 to the subsequent links.

[0065] Please refer to Figures 3 - 8, one side of the spiral groove 1102 is fixedly connected with a sealing plate 601. A square box 603 is arranged on the top of the sealing plate 601. A hose 9 is fixedly connected to the top of the square box 603. An inner pipeline 7 is arranged inside the hose 9. A second fan 8 is fixedly arranged at the top of the inner pipeline 7. A plurality of rubber layers are fixedly installed on the outer side of the hose 9; Further, the hose 9 connected to the top of the square box 603, its inner pipeline 7 and the second fan 8 form a ventilation and dust removal system. When the second fan 8 works, it can generate an air flow through the inner pipeline 7 during the sand particle transmission process, suck away some fine impurities such as dust in the sand particles, reduce the impurity content in the sand particles, and improve the sand particle quality. And for the plurality of rubber layers on the outer side of the hose 9, the rubber layer can use chlorosulfonated polyethylene rubber, butyl rubber or polyurethane rubber, which plays a protective and auxiliary role. The rubber layer can not only prevent the hose 9 from being damaged due to collision, friction, etc., extend its service life, but also reduce the noise generated by the air flow or sand particle transmission to a certain extent.

[0066] Please refer to Figures 3 - 8 , the bottom of the push rod 1009 is fixedly connected with a hanging bucket 13. The hanging bucket 13 is installed inside the groove sleeve 2. The bottom of the groove sleeve 2 is fixedly connected with a transmission groove 1103; Further, the hanging bucket 13 is installed inside the groove sleeve 2, forming a relatively stable and closed material collection space. When the particle size optimization component 10 processes the sand particles, under the action of the V-shaped scraper 1008 and the push rod 1009, some sand particles will fall into the hanging bucket 13. The transmission groove 1103 connected to the bottom of the groove sleeve 2 provides a subsequent transmission path for the sand particles in the hanging bucket 13. The hanging bucket 13 can temporarily store the sand particles, avoid the disorderly scattering of the sand particles during the processing process, and ensure the orderly flow of the materials. Moreover, its close cooperation with the groove sleeve 2 and the transmission groove 1103 enables the sand particles to be accurately conveyed from the particle size optimization component 10 to the transmission component, further improving the coherence and stability of the material transmission of the entire sand making device.

[0067] Optimized method for using a sand making device: It includes the following steps: S1. Assembly of the sand making device: Assemble the crushing component 3 in sequence, precisely assemble the crushing tank 301, support baffle 302, crushing roller 304 and the first motor 303 to ensure firm connection and smooth power transmission. Install and check the sealing performance and stability of components such as the sieve funnel 306 and the transmission track 305; tightly assemble the refinement component 6, connect the sealing plate 601, refinement box 602, second motor 605, and the first fan 607 to ensure that all connections are tight, the motor is installed precisely and the power output is stable; carefully build the particle size optimization component 10, connect components such as the third motor 1004, handle plate 1001, and screening rod to make the operation of each component coordinated. After installation, check the connection reliability and movement flexibility; install the transmission component at the bottom of the sand making tank 1, connect the fourth motor 1101, transmission groove 1103 and spiral groove 1102 to ensure the smoothness of the transmission channel. Install the bracket 4 and support feet 5 and adjust the levelness and height. Connect the hose 9, second fan 8 and rubber layer to ensure no damage or air leakage, and the rubber layer is firmly adhered. Install the hanging bucket 13 in the groove sleeve 2 to ensure precise fit without jamming.

[0068] S2. Raw material crushing and screening: Slowly and evenly feed the raw materials into the crushing tank 301 of the crushing component 3, start the first motor 303 to drive the crushing roller 304 to crush the raw materials, and closely monitor the operation of the crushing roller and the state of the materials through the observation window and monitoring instruments to ensure efficient and stable crushing. The crushed materials are transmitted through the sieve funnel 306 and the transmission track 305, and are preliminarily screened by the sieve plate 308. Qualified sand grains enter the next step, and large particles are guided back to the crushing roller 304 by the inclined plate 307 for re-crushing. Regularly check the wear and blockage of the sieve plate and clean it.

[0069] S3. Particle size optimization operation: The sand grains preliminarily screened fall into the particle size optimization component 10. Turn on the third motor 1004 to drive the relevant components to stir and screen the sand grains. The V-shaped scraper 1008 and others cooperate to push the sand grains. Observe the cooperation situation during the pushing process and clean the adhered materials. Fine-tune parameters such as the gap of the screening rod and the rotation speed of the stirring rod according to the situation of the sand grains. After adjustment, take samples for testing to ensure effectiveness and accuracy.

[0070] S4. Sand grain refinement and transmission: The sand grains after particle size optimization fall into the refinement component 6. Start the second motor 605 to make the vibrating rod 606 drive the refinement trough plate 604 to vibrate and refine the sand grains. The second motor 605 drives the first fan 607 to work, and the airflow blows up the fine powder and discharges it through the square box 603 and the hose 9. The refined sand grains enter the transmission trough 1103 through the spiral groove 1102. During transmission, the second fan 8 blows air to remove powder through the inner pipeline 7. The rubber layer reduces friction, wear and noise. Regularly check the wear of the spiral groove and the transmission trough and clean the accumulated materials and sundries. Check the working state of the second fan and adjust the wind speed and wind direction.

[0071] Through this crushing component, its crushing groove and supporting baffle build a stable crushing space. The crushing roller rotates at high speed driven by the first motor, powerfully crushing the raw materials. Subsequently, the materials are transported through the sieve funnel and the conveyor track, and are preliminarily screened by the sieve plate. The particle size optimization component plays a key role. The third motor drives the rotating rod and the stirring rod to rotate and stir the sand grains. The first screening rod and the second screening rod accurately screen and separate sand grains of different particle sizes under the drive of the driver. The V-shaped scraper and the push rod cooperate to push the sand grains. In the refinement component, the second motor makes the vibrating rod drive the refinement trough plate to vibrate at high frequency, further refining the sand grains, and the first fan removes the fine powder. The close cooperation of multiple components significantly improves the uniformity of the particle size of the sand grains, greatly reduces the residue of large particles and the generation of fine powder, and effectively improves the overall quality of the sand grains.

[0072] The spacing between the crushing rollers of the crushing component can be flexibly adjusted according to the characteristics of the raw materials, making the force on the raw materials more scientific and reasonable during the crushing process, reducing unnecessary crushing actions and energy consumption, thus significantly improving the crushing efficiency and reducing the energy consumption. In the transmission component, the fourth motor drives the spiral groove and the transmission groove to stably transport the sand grains, ensuring the efficient operation of the entire sand-making process. Moreover, each component cooperates with each other during operation, reducing the loss and waste of sand grains during transmission and processing.

[0073] The artificial mechanism sand circulating closed-loop sand-making process provided by this invention has the following advantages by setting a vertical shaft crusher and optimizing the sand-making device in the shaping sand-making workshop and using them in combination: 1. Large crushing ratio and adjustable particle size: Working together, they have efficient crushing ability, can achieve the required particle size requirements through one or two crushing operations, and can flexibly control the discharge particle size by adjusting the roll spacing in the optimized sand-making device to meet the needs of different mineral processing; 2. Stability and durability: Facing hard ores, high wear-resistant alloy steel or special wear-resistant materials are selected for their materials, ensuring that they are not easily worn under long-term high-load work and extending their service life; 3. Environmental protection and energy saving: They are equipped with efficient dust removal and noise reduction systems, reducing dust pollution and noise. At the same time, the power system is optimized to reduce energy consumption, meeting the requirements of green mining in mines; 4. Improve crushing efficiency: The vertical shaft crusher is good at coarse crushing and medium crushing, while the high-pressure roll crusher is suitable for fine crushing and ultra-fine crushing. The combination of the two can achieve multi-stage crushing and improve the overall crushing efficiency; 5. Reduce energy consumption: The vertical shaft crusher has high energy consumption when processing large pieces of materials, while the roll crusher has low energy consumption when processing fine-grained materials. The combined use can make the entire crushing process more energy-saving; 6. Improve product quality: The sand produced by the vertical shaft crusher has a good shape, but the roll crusher can further polish and shape it, making the particle shape and grading of the final product more ideal.

[0074] The terms "connection" and "fixation" appearing in the description of the present invention may be fixed connection, machining, welding, or mechanical connection. The specific meanings of the above terms in the present invention should be understood according to the specific circumstances.

[0075] In the description of the present invention, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element must have. Therefore, it should not be construed as a limitation to the present invention.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An artificial mechanism sand recycling sand-making process, characterized in that: It includes the following steps; Step S1: Obtain the raw materials with a particle size greater than 150 mm from the quarry, transport them to the coarse crushing discharge platform by truck, and then transport them to the jaw crusher through the bar feeder for crushing. After crushing, they are sent to the semi-finished product warehouse; the raw materials with a particle size less than 150 mm obtained from the quarry are directly transported to the semi-finished product warehouse through the bar feeder; Step S2: Transport the raw materials in the semi-finished product warehouse to the medium and fine crushing cone crushers in the medium and fine crushing workshop for crushing; Step S3: Send the crushed sand materials in the medium and fine crushing workshop to the first screening workshop. The sand materials screened and formed in the first screening workshop enter the finished coarse sand warehouse for storage, and the unformed sand materials enter the shaping and sand making workshop or the medium crushing cone crusher for further crushing; Step S4: The sand materials crushed in the medium crushing cone crusher are screened again in the first screening workshop to complete the closed loop; the sand materials entering the shaping and sand making workshop are shaped into coarse sand and assisted in sand making by the vertical shaft crusher. The crushed sand materials are discharged to the second screening workshop for screening. The formed sand materials enter the finished coarse sand warehouse for storage, and the unformed sand materials are transported to the optimized sand making device for crushing and processing.

2. The artificial mechanism sand recycling sand making process according to claim 1, characterized in that: The finished coarse sand warehouse includes a large stone warehouse, a medium stone warehouse, a small stone warehouse, and a pea stone warehouse; the large stone warehouse stores sand materials with a particle size of 40 - 80 mm; the medium stone warehouse stores sand materials with a particle size of 20 - 40 mm; the small stone warehouse stores sand materials with a particle size of 5 - 20 mm; the pea stone warehouse stores sand materials with a particle size of 5 - 10 mm.

3. The artificial manufactured sand recycling sand making process according to claim 2, characterized in that: In step S3, the sand materials crushed by the medium crushing cone crusher are sent to the first screening workshop. The sand materials with a particle size of 20 - 80 mm screened out are transported to the large stone warehouse and the medium stone warehouse by the conveyor; the sand materials with a particle size greater than 80 mm screened out and the excess 40 - 80 mm sand materials after the finished products enter the fine crushing cone crusher for crushing. The crushed sand materials are transported back to the first screening workshop for screening; after screening, the sand materials with a particle size greater than 80 mm are returned to the fine crushing cone crusher for continuous crushing to form a closed loop; the sand materials with a particle size of 40 - 80 mm are transported to the finished coarse aggregate warehouse with intact particle size; the sand materials with a particle size of 3 - 40 mm enter the shaping and sand making workshop through the dewatering screen; the sand materials with a particle size less than 3 mm enter the finished sand warehouse after being washed by the sand washer and dehydrated by the dewatering screen.

4. The artificial sand circulating sand making process according to claim 2, characterized in that: In step S4, the 3 - 40 mm sand materials screened by the second screening workshop are transported to the finished coarse aggregate warehouse; the sand materials with a particle size less than 3 mm are transported to the sand washer for water washing and then transported into the finished sand warehouse through the dewatering screen and the fine sand recovery machine.

5. The artificial manufactured sand recycling sand making process according to claim 2, wherein: In step S4, the 3 - 5 mm and 5 - 10 mm sand materials screened by the second screening workshop are sent to the optimized sand making device for crushing; the materials with a particle size less than 3 mm after crushing are washed and dehydrated and then sent to the finished sand warehouse.

6. The artificial mechanism sand recycling sand making process according to claim 1, characterized in that: The optimized sand making device includes a sand making tank (1), a support (4), a crushing component (3), a particle size optimization component (10), and a transportation component; The sand pot is arranged at the upper part of the bracket (4); the crushing component (3) is arranged at the upper part of the sand pot and is used for crushing sand materials; the particle size optimization component (10) is arranged in the sand pot, below the crushing component (3), and optimizes the particle size of the crushed sand grains; the transportation component is arranged below the particle size optimization component (10) and is used to catch the optimized sand grains for transportation.

7. The artificial manufactured sand recycling sand making process according to claim 6, wherein: The crushing component (3) includes a crushing tank (301), a support baffle (302), a first motor (303), a crushing roller (304), a sieve plate and a discharge port; the crushing tank (301) is arranged at the top of the sand pot, and the support baffle (302) is arranged on the left and right sides of the crushing tank (301); the first motor (303) is arranged on the side wall of the crushing tank (301), the output shaft is inserted into the crushing tank (301), and is connected to the left end of the crushing roller (304), and the right end of the crushing roller (304) is rotatably connected to the right side wall of the crushing tank (301); the sieve plate is arranged below the crushing tank (301), and the discharge port is arranged below the sieve plate.

8. The artificial mechanism sand recycling sand making process according to claim 6, characterized in that: The particle size optimization component (10) includes a second motor (605), a rotating rod (1002), a stirring rod (1003), a screening rod and a V-shaped collection tank; the second motor (605) is arranged in the sand pot, the rotating rod (1002) is vertically arranged in the upper part of the sand pot, the stirring rod (1003) is distributed along the circumference of the rotating rod (1002), the second motor (605) drives the rotating rod (1002) to rotate, and the stirring rod (1003) rotates following the rotating rod (1002) to fully stir the sand materials; the screening rod is arranged in the sand pot to separate sand materials with different particle sizes; the V-shaped collection tank is arranged below the screening rod to collect and transport the separated sand materials.

9. The artificial manufactured sand recycling sand making process according to claim 6, characterized in that: The transportation component includes a third motor (1004), a transportation tank, a rotating rod, a spiral blade and a discharge port; the upper end of the transportation tank is open to receive the sand materials optimized by the particle size optimization component (10); the third motor (1004) is arranged on the right side wall of the transportation tank, and the output shaft is inserted into the transportation tank; the rotating rod is arranged in the transportation tank and is connected to the output shaft of the third motor (1004), and the spiral blade is arranged on the rotating rod; the discharge port is arranged at the left end of the transportation tank.

10. A kind of artificial mechanism sand recycling sand making process according to claim 7, characterized in that: It also includes a refinement component (6), the refinement component (6) is connected to the side wall of the crushing tank (301) through a hose (9), and a second fan (8) is arranged in the hose (9); the refinement component (6) includes a square box (603), a first fan (607), a vibrating rod (606), a refinement tank plate (604) and a fourth motor (1101); the refinement tank plate (604) is arranged in the square box (603), the vibrating rod (606) passes through the refinement tank plate (604), a fourth motor (1101) is arranged on the side wall of the vibrating rod (606), and the fourth motor (1101) is used to drive the vibrating rod (606) and the refinement tank plate (604) to vibrate; the first fan (607) is arranged at the bottom of the direction box.

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