Building solid waste recycled aggregate preparation system with multi-layer screening and intelligent judgment functions and operation method

Abstract

The invention provides a building solid waste recycled aggregate preparation system with multi-layer screening and intelligent judgment functions and an operation method. The construction method comprises the construction steps of waste transportation and throwing, manual sorting, waste crushing, cleaning and impurity removal, fine crushing, multi-stage screening, quality detection and control, finished product storage and transportation and recycled aggregate application. According to the building solid waste recycled aggregate preparation system with the multi-layer screening and intelligent judgment functions and the operation method, accurate regulation and control of the screening process are achieved, and the production efficiency is remarkably improved. The quality stability of the recycled aggregate is ensured, the influence of building wastes on the environment is reduced, and the cyclic utilization of resources is promoted. By adopting the technology, the production scheme can be quickly adjusted according to market requirements, the adaptability is high, and more economic benefits are created for enterprises.

Description

Technical Field

[0001] The invention relates to the field of resource recycling, and in particular to a construction solid waste recycled aggregate preparation system and an operation method with multi-level screening and intelligent determination functions. Background Art

[0002] With the acceleration of urbanization, the amount of solid waste generated by the construction industry is increasing. How to effectively deal with these wastes has become an urgent problem to be solved. Traditional treatment methods are mainly landfill and incineration, which not only occupy a large amount of land resources, but also may cause environmental pollution. In recent years, with the popularization of the concept of resource recycling and the development of technology, converting construction solid waste into recycled aggregates has become an environmentally friendly and economical choice. However, the existing recycled aggregate preparation systems generally have problems such as low grading accuracy and low intelligence level, which limits their widespread application.

[0003] Converting construction waste into recycled aggregate can significantly reduce the demand for landfills, save precious land resources, and reduce environmental pollution. Compared with newly mined natural aggregates, the production process of recycled aggregates consumes less energy and emits less carbon, which helps to mitigate climate change. The use of recycled aggregates reduces dependence on natural resources such as sand and gravel, helps to protect natural resources and extend the service life of mineral resources. By recycling construction waste, resources are recycled and the overall utilization rate of resources is improved. The production cost of recycled aggregates is usually lower than that of natural aggregates. The use of recycled aggregates can effectively reduce the cost of building materials and improve the economic benefits of the project.

[0004] The efficiency and accuracy of existing crushing and screening equipment in processing construction waste still need to be improved. Especially for the processing of mixed waste, how to efficiently separate different types of materials is a technical problem. Most existing preparation systems lack intelligent control, making it difficult to achieve accurate management and optimization of the production process. Pollutants such as dust, noise and wastewater may be generated during the processing of construction waste. How to effectively control these pollutants is a challenge. Summary of the invention

[0005] The object of the present invention is to provide a construction solid waste recycled aggregate preparation system and operation method with multi-level screening and intelligent judgment functions to solve the above-mentioned technical problems.

[0006] In order to solve the above technical problems, the present invention provides an operation method of a construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions, comprising the following steps: Step 1: Waste transportation and delivery: sort the waste and deliver it to the production line to complete the waste delivery; Step 2: Manual sorting: Perform preliminary manual sorting to remove large impurities and dangerous objects and conduct on-site classification; Step 3: Crushing the waste: Put the waste into the jaw crusher in sequence to perform preliminary crushing of the waste; Step 4: Cleaning and impurity removal: The preliminarily crushed waste is passed through a vibrating screening belt to remove surface impurities, a magnetic suction cylinder is used to remove metal from the waste, and then the surface of the waste is cleaned and dried; Step 5: Fine crushing: After cleaning and removing impurities, the concrete fragments are put into the cone crusher for further crushing to obtain fine stones with uniform particle size; Step 6: Multi-stage screening: All the crushed waste is finely screened according to the particle size level, and the crushed particles are classified step by step using an eccentric rotary machine; Step 7: Quality inspection and control: The crushed particles are classified by particle size and sent to the intelligent quality inspection room to inspect and track various indicators of the crushed particles; Step 8: Finished product storage and transportation: The crushed particles that have completed the processing and meet the standards are stored in batches and categories and transported to the designated recycling location; Step nine, application of recycled aggregates: finished products leave the factory, and the processed building waste is used in the production of building materials.

[0007] The beneficial effects of the present invention are: 1. The present invention adopts dynamic adjustment multi-level precise screening technology. The production line adopts manual sorting, vibrating screening belt, and eccentric rotary machine to carry out multiple screenings, which maximizes the removal of impurities in product production. In addition, the vibration frequency and amplitude of the vibrating screening belt and the eccentric rotary machine can be adjusted during the screening process to dynamically adjust the screening efficiency. This technology improves the screening accuracy and production efficiency, improves the product quality and performance of recycled aggregates, reduces energy consumption and maintenance costs, and extends the life of equipment. Through intelligent management and analysis, the production process is further optimized, promoting the sustainable development of resource utilization of construction waste.

[0008] 2. The present invention adopts multi-stage high-efficiency crushing and grinding technology, and performs two grindings through jaw crusher and cone crusher, which not only improves the crushing efficiency and particle size uniformity, but also improves the product quality and performance of recycled aggregate, reduces energy consumption and maintenance costs, and extends equipment life.

[0009] 3. The present invention adopts the technology of controlling particle size by using an adjustable crusher with an eccentric rotating device. Both the jaw crusher and the cone crusher can adjust the particle size of the material, and the eccentric rotating device can distinguish the particle size according to the screen specifications. This technology can accurately control the initial particle size of the recycled aggregate and produce aggregates that meet the specific particle size requirements, providing a good foundation for subsequent processing and improving the quality and stability of the recycled aggregate.

[0010] 4. The present invention adopts dust-free crushing and environmental protection technology, and uses fans with water mist spraying systems at various stages of production to effectively reduce dust. It protects the environment of the construction site very well and is beneficial to the health of construction workers.

[0011] 5. The present invention adopts the whole process intelligent identification and judgment technology, and controls the quality of the product through intelligent detection, especially using a laser particle size analyzer to detect the particle size of the product and an X-ray fluorescence spectrometer to detect the layer of the product. This technology saves regulatory costs, improves product quality, and also has a positive effect on environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the preparation process of recycled aggregate from construction solid waste with multi-level screening and intelligent judgment functions; Figure 2 It is a schematic diagram of a jaw crusher; Figure 3 This is a schematic diagram of a vibration screening belt: Figure 4 It is a schematic diagram of a cone crusher; Figure 5 is a schematic diagram of an eccentric rotating machine; Figure 6 It is a construction flow chart of a construction solid waste recycled aggregate preparation system and operation method with multi-level screening and intelligent determination functions; Explanation of the reference numerals: 1- waste entering the site; 2- on-site classification; 3- jaw crusher; 4- vibrating screening belt; 5- finished product leaving the factory; 6- intelligent quality inspection room; 7- eccentric rotary machine; 8- cone crusher; 9- hot air blower; 10- washing tank; 11- water spraying device; 12- conveyor belt; 13 rotating wheel; 14- driving arm; 15- jaw crusher motor; 16- emergency brake button; 17- reciprocating spring; 18- strut rod; 19- outlet adjustment rod; 20- jaw crusher discharge port; 21- rolling plate; 22- fixing plate; 23- blower; 24- dust cover; 25- strut foot; 26- vibrating spring; 27- conveying base; 28 -Steel mesh screen; 29-Magnetic suction cylinder; 30-Spray device; 31-Friction wall; 32-Breaker; 33-Friction teeth; 34-Adjusting slot; 35-Cone crusher motor; 36-Driving gear; 37-Eccentric rod; 38-Cone crusher discharge port; 39-Screening feed port; 40-20mm screen; 41-10mm screen; 42-5mm screen; 43-Poreless plate; 44-First-stage discharge port; 45-Second-stage discharge port; 46-Third-stage discharge port; 47-Fourth-stage discharge port; 48-Eccentric block; 49-Vibrating support foot; 50-Vertical motor; 51-Crushing rib; 52-Blower; 53-Water mist nozzle; 54 Base. DETAILED DESCRIPTION

[0013] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0014] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0015] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0016] like Figure 1-Figure 6 The present invention provides an operation method of a construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions, comprising the following steps: Step 1: Waste transportation and delivery: sort out the waste generated by construction at each construction site, transport it to the treatment site, and deliver it to the production line in an orderly manner. Complete the waste delivery 1.

[0017] At the construction site or demolition site, construction waste is collected and classified. Use a muck truck to transport construction waste to the recycling site, and check whether the transportation documents are consistent with the type and quantity of waste actually transported. The waste is temporarily stored in the designated stacking area, ensuring that the stacking area is clean and tidy and avoids mixing with other garbage. The waste is put into the production line in an orderly manner according to the plan, and the preparation process of recycled aggregate from construction solid waste begins.

[0018] Step 2: Manual sorting: Before feeding the waste into the jaw crusher 3, the waste is manually sorted to remove large impurities and avoid mixing of dangerous objects. Carry out on-site classification 2.

[0019] After all the waste has been transported to the recycling site, workers will first conduct a preliminary inspection of the unloaded waste to ensure that no dangerous items (such as explosives, chemicals, etc.) are mixed in. Then, sorting tools such as shovels, rakes, clamps, etc. are used to roughly classify the waste. If large pieces of waste are encountered, excavators can be used for sorting. During sorting, large impurities such as large pieces of metal, large pieces of wood, textiles and plastic products are mainly removed. During the sorting process, measures such as spray dust reduction are taken to reduce dust pollution.

[0020] Step 3, crushing of waste: large pieces of waste are put into the jaw crusher 3 in sequence to perform preliminary crushing of the waste.

[0021] Place the waste on the conveyor belt 12 and feed it into the jaw crusher 3. Before starting the jaw crusher 3, conduct a comprehensive equipment inspection to ensure that all parts are intact, the fasteners are firm, and the lubrication system is normal. Confirm that there are no foreign objects in the crushing chamber and the feed port is unobstructed. Press the start button to start the jaw crusher 3. Observe whether the equipment is running smoothly and whether there are any abnormal sounds or vibrations. Start the conveyor belt 12 to evenly feed the sorted construction waste into the feed port of the jaw crusher 3. Avoid putting too much material in at one time to avoid overloading the equipment. Adjust the size of the discharge port according to the size of the waste and process requirements to control the particle size. The crushed waste is discharged from the jaw crusher discharge port 20. During the waste crushing process, the dust cover 24 is used to cover the top of the feed port, and the blower 23 is turned on to avoid dust. In case of emergency, press the emergency brake button 16 in time to shut down the machine.

[0022] Step 4: Cleaning and impurity removal: The preliminarily crushed waste is passed through a vibrating screening belt 4 to remove surface impurities, and the metal in the waste is removed by a magnetic suction cylinder 29. The surface of the waste is then cleaned and dried.

[0023] The waste crushed by the jaw crusher 3 is transported to the vibrating screening belt 4, which is combined with the magnetic suction cylinder 29 to remove impurities and metals such as steel bars in the waste. Light impurities are blown away by the blower 52, the air outlet is downward, and there is a water mist nozzle 53 on the ground to reduce dust. The waste blocks with impurities removed are sent to the washing tank 10. Turn on the water spray device 11 to allow water to flow through the washing tank 10 to rinse the construction waste. The water flow should be strong enough to ensure that fine dust and soil are washed away. Workers stir the waste blocks in the washing tank 10 to further remove impurities attached to the surface of the material. The cleaned material is discharged through the discharge port, and a hot air blower 9 is used to quickly remove moisture from the material through heating and ventilation. The wastewater generated during the cleaning process should be collected and treated centrally to ensure that it meets the discharge standards and avoids pollution to the environment.

[0024] Step 5, fine crushing: After cleaning and removing impurities, the concrete fragments are put into the cone crusher 8 for further crushing to obtain fine stones with uniform particle size.

[0025] Before starting the cone crusher 8, conduct a comprehensive equipment inspection to ensure that all parts are intact, fasteners are secure, and the lubrication system is normal. Confirm that there is no foreign matter in the crushing chamber and the feed port is unobstructed. Press the start button to start the cone crusher 8. Observe whether the equipment is running smoothly and whether there are any abnormal sounds or vibrations. Feed the previously crushed blocks evenly into the feed port of the cone crusher 8 to avoid putting too much material in at one time to avoid overloading the equipment. The crushing hammer 32 in the cone crusher rotates on its own and eccentrically, and the size of the particles is controlled by adjusting the height of the friction wall 31. There is a spray device 30 on the upper part of the feed port, and water mist is sprayed through the spray device 30 to reduce the dust generated when the machine is working.

[0026] Step 6, multi-stage screening: all the crushed waste is finely screened according to the particle size level, and the crushed particles are classified step by step using the eccentric rotating machine 7.

[0027] According to the required particle size range, select a suitable screen and install it on the eccentric rotary machine 7. Put the crushed particles after secondary crushing into the eccentric rotary screening machine 7. Before starting the eccentric rotary machine 7, conduct a comprehensive equipment inspection to ensure that all parts are intact, the fasteners are firm, and the screen is not damaged. The operator should monitor the operating status of the rotary machine at any time, pay attention to the readings of instruments such as the ammeter and vibration frequency, and ensure that the equipment operates within the normal range. According to the characteristics of the material and the screening effect, the vibration frequency of the eccentric rotary machine 7 is appropriately adjusted to achieve the best screening effect. The screened material is discharged from the screens with different apertures. The operator should regularly check the materials in each particle size segment to ensure that they meet the requirements of subsequent processing.

[0028] The principle of eccentric rotary machine for screening fine particles: the eccentric rotary machine is equipped with an upright motor 50, and an eccentric block 48 is installed at the bottom of the machine. When the motor rotates, the eccentric block 48 generates centrifugal force, causing the entire screen frame and screen to vibrate. The design of the eccentric block 48 makes the vibration direction usually vertical, horizontal, and inclined three-dimensional motion, and transmits this motion to the screen surface, so that the material makes an outward expansion and opening motion on the screen surface. This composite vibration helps the material to be evenly distributed and flow on the screen surface. The higher the vibration frequency, the more times the material jumps on the screen surface, which helps to improve the screening efficiency. The larger the vibration amplitude, the higher the jumping height of the material on the screen surface, which helps to increase the screening speed. The selection of the screen mesh aperture directly affects the particle size range of the final product. There are four types of screen mesh apertures prepared during implementation: 5mm, 10mm, 20mm and non-porous plate. During screening, the screen with large particle size is at the top layer, and the particle size decreases step by step downward, and the screening is performed in layers step by step. The first discharge port 44 outputs oversized materials, and the fourth discharge port 47 outputs overfine materials. Finally, the particles with a particle size greater than 20 mm are collected and put back into the cone crusher 8 for grinding. The screened aggregates are output from different discharge ports, and workers classify, collect, and store them for the next process.

[0029] Step 7, quality inspection and control: the crushed particles after screening are classified according to the particle size and sent to the intelligent quality inspection room 6 to inspect and track various indicators of the crushed particles to ensure that the obtained products meet the design standards.

[0030] After all the waste has been crushed, screened and classified, the following quality checks are carried out on the produced aggregates.

[0031] Particle size detection: Use a laser particle size analyzer and place the sample into the sample pool of the laser particle size analyzer. Start the equipment and perform particle size detection. The laser particle size analyzer measures the particle size distribution of particles through the principle of laser scattering. Record the test results in the data system to generate a particle size distribution curve.

[0032] Chemical composition detection: Use an X-ray fluorescence spectrometer to place the sample in the sample cup of the X-ray fluorescence spectrometer. Start the equipment to perform chemical composition detection. The X-ray fluorescence spectrometer determines the chemical composition of the sample by exciting the elements in the sample and measuring its characteristic X-ray energy. The test results are recorded in the data system and a chemical composition report is generated.

[0033] Physical property testing: Use an electronic balance to weigh a certain volume of sample, calculate the density, and record the density data in the data system. Weigh the weight of the dry sample, soak the sample in water for a certain period of time, take it out and weigh the wet weight. Calculate the water absorption rate based on the dry weight and wet weight, and record the water absorption rate data in the data system.

[0034] After the inspection is completed, products that do not meet the design requirements will be processed again.

[0035] Step 8: Finished product storage and transportation: The crushed particles that have been processed and meet the standards are properly stored in batches and categories. They are then transported to designated recycling locations.

[0036] Materials that have been processed and qualified by quality inspection should be properly stored. Choose a flat and solid site to ensure that the stacking area will not cause uneven accumulation of aggregates due to uneven ground. Ensure that the stacking site has a good drainage system to prevent water accumulation from causing moisture to the aggregates. Set up dust nets or enclosures around the stacking area to reduce dust. Stack recycled aggregates of different particle sizes separately to avoid mixing. Set up signs in each stacking area to indicate information such as particle size range and production date. Cover the stacked recycled aggregates with rainproof cloth to prevent rainwater from penetrating and causing moisture to the aggregates. In the hot summer season, use sunscreen nets to cover to prevent direct sunlight from causing the temperature of the aggregates to rise. Spray water regularly to reduce dust and reduce dust generated during stacking. Use trucks for transportation to transport the recycled aggregates to the required location according to demand.

[0037] Step nine, application of recycled aggregate: finished product leaves the factory 5. The processed building waste is used in the production of various building materials such as concrete, mortar, road base, etc.

[0038] After the production of recycled aggregate is completed, it can be used in concrete, mortar, roadbed materials and backfill materials according to design requirements.

[0039] The present invention adopts dynamic adjustment multi-level precise screening technology. The production line adopts manual sorting, vibrating screening belt, and eccentric rotary machine to perform multiple screenings, maximizing the removal of impurities in product production. In addition, the vibration frequency and amplitude of the vibrating screening belt and the eccentric rotary machine can be adjusted during the screening process to dynamically adjust the screening efficiency. This technology improves screening accuracy and production efficiency, improves the product quality and performance of recycled aggregates, reduces energy consumption and maintenance costs, and extends equipment life. Through intelligent management and analysis, the production process is further optimized, promoting the sustainable development of resource utilization of construction waste.

[0040] The present invention adopts multi-stage high-efficiency crushing and grinding technology, and performs two grindings through a jaw crusher and a cone crusher, which not only improves the crushing efficiency and particle size uniformity, but also improves the product quality and performance of the recycled aggregate, reduces energy consumption and maintenance costs, and extends the life of the equipment.

[0041] The present invention adopts the technology of controlling particle size by using an adjustable crusher with an eccentric rotating device. Both the jaw crusher and the cone crusher can adjust the particle size of the material, and the eccentric rotating device can distinguish the particle size according to the screen specifications. This technology can accurately control the initial particle size of the recycled aggregate and produce aggregate that meets the specific particle size requirements, providing a good foundation for subsequent processing and improving the quality and stability of the recycled aggregate.

[0042] The present invention adopts dust-free crushing and environmental protection technology, and uses fans with water mist spraying systems at various stages of production to effectively reduce dust raising, protect the environment of the construction site well, and benefit the health of construction workers.

[0043] The present invention adopts the whole process intelligent identification and judgment technology, and controls the quality of the product through intelligent detection, especially using a laser particle size analyzer to detect the particle size of the product and using an X-ray fluorescence spectrometer to detect the layer of the product. This technology saves regulatory costs, improves product quality, and also has a positive effect on environmental protection.

[0044] A method for preparing recycled aggregate from construction solid waste with multi-level screening and intelligent determination functions, such as Figure 1 As shown, the overall construction process is waste entering the site 1 - on-site classification 2 - jaw crusher 3 crushing - vibration screening belt 4 screening - water washing tank 10 cleaning and drying - cone crusher 8 crushing - eccentric rotary machine 7 screening - entering the intelligent quality inspection room 6 inspection - finished product delivery 5.

[0045] like Figure 2 As shown, the initial crushing of waste is carried out by a jaw crusher 3. The waste enters the machine from a conveyor belt 12 and is crushed and discharged from a jaw crusher discharge port 20. When the jaw crusher 3 is in operation, the jaw crusher motor 15 drives the rotating wheel 13 to rotate. One end of the driving arm 14 is sleeved on the rotating wheel 13, and the other end is connected to the support rod 18 and the reciprocating spring 17 to make reciprocating motion. The fixed plate 22 is fixed to the side of the jaw crusher 3 to keep still. The driving arm 14 and the fixed plate 22 are provided with a rolling plate 21 opposite to each other, and a rolling rib 51 is provided on the rolling plate 21 for crushing stones. The end of the outlet adjustment rod 19 is connected to one side of the driving arm 14 for adjusting the particle size of the crusher discharge. An emergency brake button 16 is provided on the motor. When an emergency occurs, pressing the button can cut off the power to the motor and stop the machine. A dust cover 24 is provided on the top of the feed port, and a blower 23 is installed on the dust cover 24 to reduce the damage to the environment caused by dust flying when the machine is running.

[0046] The outlet adjustment rod 19 is a threaded telescopic rod, which controls the position of the driving arm 14 by telescoping.

[0047] like Figure 3As shown, after the waste is crushed in the jaw crusher 3, it is sent to the vibrating screening belt 4 for screening. The conveying base 27 of the vibrating screening belt 4 is supported by the support legs 25, and the surface of the conveying base 27 is paved with a steel mesh screen plate 28. A vibration spring 26 is set at the bottom of the conveying base 27 to make the material jump on the steel mesh screen plate 28 and screen evenly. A magnetic suction cylinder 29 is set on the upper part of the conveying base 27 to rotate continuously, emit magnetic force, and absorb metals in the waste. During the transmission process, workers regularly clean the metal adsorbed on the magnetic suction cylinder 29.

[0048] like Figure 4 As shown, the waste is crushed for the second time by the cone crusher 8. The operation of the cone crusher 8 drives the driving gear 36 to rotate the hammer 32 through the cone crusher motor 35, and the eccentric rod 37 causes the hammer 32 to rotate eccentrically. After the waste enters, it is crushed by the hammer 32 and the friction wall 31 to become broken particles. The friction wall 31 has friction teeth 33 to improve the crushing efficiency. At the same time, the height of the friction wall 31 can be controlled by adjusting the adjustment groove 34, so as to control the particle size of the discharged material. When the machine is running, the spray device 30 above the feed port is turned on to prevent dust from flying, and finally the broken particles are produced from the discharge port 38 of the cone crusher.

[0049] The end of the eccentric rod 37 is rotatably connected to the breaker hammer 32 , and the eccentric rod 37 can be a threaded telescopic rod, so that the eccentric rod 37 can be telescoped to control the eccentric angle of the breaker hammer 32 .

[0050] The adjustment groove 34 is provided with a plurality of installation grooves arranged in the height direction. One end of the connecting rod is inserted into the installation groove, and the other end is connected to the friction wall 31. The installation height of the friction wall 31 is adjusted by inserting the connecting rod into the installation grooves of different heights.

[0051] like Figure 5As shown, an eccentric rotary machine 7 is used to screen the crushed particles in multiple levels step by step. The eccentric rotary machine 7 is fixed to the ground through a base 54 to prevent sliding during operation. The eccentric rotary machine 7 is equipped with an upright motor 50, and an eccentric block 48 is installed at the bottom of the machine. When the motor rotates, the eccentric block 48 generates centrifugal force, causing the entire screen frame and screen to vibrate. The vibration support 49 is used to connect the eccentric rotary machine 7 and the base 54, which plays a role in cushioning the overall structure of the eccentric rotary machine 7 and improving the safety factor. The design of the eccentric block 48 makes the vibration direction usually vertical, horizontal, and inclined three-dimensional motion, and transmits this motion to the screen surface, so that the material does an outward expansion and opening line motion on the screen surface. This composite vibration helps the material to be evenly distributed and flow on the screen surface. The higher the vibration frequency, the more times the material jumps on the screen surface, which helps to improve the screening efficiency. The larger the vibration amplitude, the higher the jumping height of the material on the screen surface, which helps to increase the screening speed. The screens are 20 mm screen 40, 10 mm screen 41, 5 mm screen 42 and non-porous plate 43 from top to bottom. The waste blocks enter from the screening feed port 39 and are screened out from the primary discharge port 44, the secondary discharge port 45, the tertiary discharge port 46 and the quaternary discharge port 47 in descending order of particle size. The primary discharge port 44 outputs oversized materials, and the quaternary discharge port 47 outputs overfine materials. Finally, the blocks with particle sizes larger than 20 mm are collected and put back into the cone crusher 8 for grinding.

[0052] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. The operation method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent judgment functions is characterized in that: The following steps are involved: Step 1: Waste transportation and delivery: sort the waste and deliver it to the production line to complete the waste delivery (1); Step 2, manual sorting: Perform preliminary manual sorting to remove large impurities and dangerous objects and conduct on-site classification (2); Step 3, crushing the waste: the waste is put into the jaw crusher (3) in sequence to perform preliminary crushing of the waste; Step 4: cleaning and impurity removal: the initially crushed waste is passed through a vibrating screening belt (4) to remove surface impurities, a magnetic suction cylinder (29) is used to remove metals in the waste, and then the surface of the waste is cleaned and dried; Step 5, fine crushing: After cleaning and removing impurities, the concrete fragments are put into a cone crusher (8) for further crushing to obtain fine stones with uniform particle size; Step 6, multi-stage screening: finely screen all the crushed waste according to the particle size level, and use the eccentric rotating machine (7) to classify the crushed particles step by step; Step 7: Quality inspection and control: the crushed particles are classified according to the particle size and sent to the intelligent quality inspection room (6) to inspect and track the various indicators of the crushed particles; Step 8: Finished product storage and transportation: The crushed particles that have completed the processing and meet the standards are stored in batches and categories and transported to the designated recycling location; Step nine, application of recycled aggregate: finished products leave the factory (5), and the processed building waste is used in the production of building materials.

2. The operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions according to claim 1 is characterized in that: In step three, waste enters the jaw crusher (3) from the conveyor belt (12), is crushed and discharged from the jaw crusher discharge port (20); when the jaw crusher (3) is in operation, the jaw crusher motor (15) drives the rotating wheel (13) to rotate, one end of the driving arm (14) is sleeved on the rotating wheel (13), and the other end is connected to the support rod (18) and the reciprocating spring (17) to make reciprocating motion, the fixed plate (22) is fixed to the side of the jaw crusher (3), and the driving arm (14) and the fixed plate (22) are provided with rolling plates (21) opposite to each other, and the rolling plates (21) are provided with rolling ribs (51).

3. The operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions according to claim 2 is characterized by: The end of the outlet adjustment rod (19) is connected to one side of the driving arm (14) and is used to adjust the particle size of the crusher discharge. An emergency brake button (16) is provided on the motor.

4. The operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions according to claim 2 is characterized in that: A dust cover (24) is arranged on the top of the feed port of the jaw crusher (3), and a blower (23) is installed on the dust cover (24).

5. The operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions according to claim 1 is characterized in that: In step 4, the conveying base (27) of the vibrating screening belt (4) is supported by the support legs (25), a steel mesh screen plate (28) is laid on the surface of the conveying base (27), a vibration spring (26) is arranged at the bottom of the conveying base (27) to make the material jump on the steel mesh screen plate (28), and a magnetic suction cylinder (29) is arranged on the upper part of the conveying base (27) to absorb metal in the waste; during the transmission process, the metal adsorbed on the magnetic suction cylinder (29) is cleaned regularly.

6. The operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions according to claim 1 is characterized in that: In step 5, the cone crusher motor (35) drives the driving gear (36) to rotate the crushing hammer (32), and the eccentric rod (37) causes the crushing hammer (32) to rotate eccentrically, so that the waste enters the cone crusher (8) and is crushed by the crushing hammer (32) and the friction wall (31) to form crushed particles; the friction wall (31) is provided with friction teeth (33), and one side of the friction wall (31) is provided with an adjustment groove (34) for controlling the height of the friction wall (31); when the machine is running, the spray device (30) above the feed port of the cone crusher (8) is turned on, and finally the crushed particles are produced from the discharge port (38) of the cone crusher.

7. The operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions according to claim 1 is characterized in that: In step six, the eccentric rotating machine (7) is fixed to the ground via a base (54), a vertical motor (50) is arranged inside the eccentric rotating machine (7), an eccentric block (48) is installed at the bottom of the eccentric rotating machine (7), and a vibrating support foot (49) is used to connect the eccentric rotating machine (7) and the base (54).

8. The operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions according to claim 7 is characterized in that: A 20 mm screen (40), a 10 mm screen (41), a 5 mm screen (42) and a non-porous plate (43) are arranged in the eccentric rotating machine (7) from top to bottom; waste blocks enter from the screening feed port (39) and are screened out from the primary discharge port (44), the secondary discharge port (45), the tertiary discharge port (46) and the quaternary discharge port (47) in descending order of particle size; finally, blocks with a particle size greater than 20 mm are collected and put back into the cone crusher (8) for grinding.

9. A construction solid waste recycled aggregate preparation system with multi-level screening and intelligent determination functions, characterized in that: The operation is carried out according to the operating method of the construction solid waste recycled aggregate preparation system with multi-level screening and intelligent judgment functions according to any one of claims 1-8.

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