Gangue filling aggregate preparation system with intelligent gradation control function and using method of gangue filling aggregate preparation system

Abstract

The invention relates to a grading intelligent control gangue filling aggregate preparation system which comprises a material conveying mechanism, grading screening mechanisms, a multi-stage adjustable crushing unit, a crusher and a grading stock bin, and the crusher, an initial stock bin and at least two grading screening mechanisms form a primary screening sub-system through the material conveying mechanism; each grading screening mechanism in the primary screening subsystem is communicated with at least two multi-stage adjustable crushing units through a material conveying mechanism, and each multi-stage adjustable crushing unit is communicated with at least two grading screening mechanisms through a material conveying mechanism to form a secondary screening subsystem. The working method comprises three steps of capacity design, system assembly and production processing. On one hand, the requirements of crushing and granulating operation on various raw materials can be met, and the requirements of processing operation on various particle materials with different particle sizes can be met at the same time; on the other hand, the system structure can be flexibly adjusted and expanded according to production requirements.

Description

Technical Field

[0001] The invention relates to a gangue filling aggregate making system with intelligent grading control and a use method thereof, belonging to the technical field of coal mine filling mining. Background Art

[0002] At present, the crushing process of the slurry station is generally derived from the sand making process of the stone plant, that is, the jaw crusher, hammer crusher, and impact crusher are connected in series in the order of coarse crushing to fine crushing, and the gangue is crushed step by step to form gangue filling aggregate. However, in this material preparation system, due to the differences in mineral composition, structure and moisture content of different gangues, the discharge ports of crushers at all levels do not have the function of accurately controlling the particle size of gangue, which ultimately leads to the uncontrollable particle size distribution of gangue filling aggregate. In actual filling operations, the flow performance of the filling slurry in the grouting pipeline is closely related to the physical and chemical properties of the gangue and the particle size distribution of the gangue aggregate. For example, for a certain type of gangue slurry, the gangue filling aggregate has an overall particle size of less than 1.5mm, a powder mass of less than 0.075mm (200 mesh or more) of 25%, a fine material mass of 0.075-0.1mm of 25%, a medium fine material mass of 0.1-0.5mm of 30%, and a coarse aggregate mass of 0.5-1.5mm of 20%. The gangue slurry has the best flowability at a specific concentration. It can be seen that the finished filling material prepared by the existing gangue filling aggregate preparation system is prone to fluctuations in the flowability of the filling slurry due to the uncontrollable particle size grading, which increases the risk of slurry blockage in the grouting pipeline.

[0003] Therefore, in response to this problem, there is an urgent need to develop a gangue filling aggregate preparation system and a working method that can accurately control the particle size grading to meet the needs of filling work. Summary of the invention

[0004] In order to address the deficiencies in the prior art, the present invention provides a grading intelligently controlled gangue filling aggregate making system and a method of use. The system structure of the invention has good versatility and can effectively adapt to the needs of use in a variety of production processes and production site environments, greatly improving the versatility and environmental adaptability of the system. During operation, on the one hand, it can meet the needs of crushing and granulating raw materials of various materials, and can simultaneously realize the needs of processing operations of granular materials with a variety of different particle sizes, and in the process of granular material processing, it can realize the needs of precise proportioning and mixing of granular materials with a variety of different particle sizes; on the other hand, the system structure can be flexibly adjusted and expanded according to production needs, thereby effectively meeting the needs of different production and processing process operations, and also effectively improving the efficiency of production and processing.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A gangue filling aggregate material making system with intelligent grading control, comprising a material conveying mechanism, a grading screening mechanism, a multi-stage adjustable crushing unit, a crusher, a grading material bin, an initial material bin and a main control circuit, wherein at least one crusher is provided, and the crusher is respectively connected to an initial material bin and at least two grading screening mechanisms through the material conveying mechanism, and constitutes a primary screening subsystem, and at the same time, each grading screening mechanism in the primary screening subsystem is respectively connected to at least two multi-stage adjustable crushing units through the material conveying mechanism, and each multi-stage adjustable crushing unit is connected in parallel with each other, and at the same time, each multi-stage adjustable crushing unit is also respectively connected to at least two grading screening mechanisms through the material conveying mechanism, and thus constitutes a secondary screening subsystem; at the same time, the secondary screening subsystem Each level of distribution and screening mechanism of the system is connected with at least three material conveying mechanisms respectively, and is connected with a grading material bin through at least one of the material conveying mechanisms; it is connected with an external material supply and conveying equipment through at least one of the material conveying mechanisms; at the same time, it is connected with another adjustment and crushing unit in the secondary screening subsystem through another material conveying mechanism, and the grading material bin is connected with the external material supply and conveying equipment through the material conveying mechanism; in addition, the initial silo is connected with each level of distribution and screening mechanism and the external material supply and conveying equipment in the primary screening subsystem through the material conveying mechanism; the main control circuit is electrically connected with the material conveying mechanism, the grading screening mechanism, the multi-stage adjustable crushing unit, the crusher, and the grading material bin.

[0007] Furthermore, the multi-stage adjustable crushing unit includes a supporting frame, a roller crusher, a lower crushing chamber, a barrel crushing mechanism, a return fan, a dust removal mechanism, a driving motor and a driving circuit, wherein the supporting frame is a frame structure with a rectangular axial section, and the axis of the supporting frame is perpendicular to the horizontal plane, the lower crushing chambers are all located in the supporting frame and connected to the supporting frame, the roller crusher is connected to the lower crushing chamber, and the roller crusher is located above the lower crushing chamber and connected to the upper end surface of the supporting frame, the lower crushing chamber is a columnar cavity with a truncated cone structure in an axial section, and its front end face and rear end face are both provided with a feeding port and a main discharge port coaxially distributed therewith, the axis of the lower crushing chamber forms an angle of 15°-45° with the horizontal plane, the diameter of the front end face of the lower crushing chamber is at least twice the diameter of the rear end face, and the lower crushing chamber is inclined from front to rear, and in addition The upper end surface of the lower crushing chamber is provided with a plurality of return air ports distributed along its axis, and the lower end surface is provided with a plurality of auxiliary discharge ports distributed along its axis, and the feeding port, the main discharge port and the auxiliary discharge ports are respectively connected to a material conveying mechanism, and the return air port is connected to the return air fan through a guide pipe, and is connected to the dust removal mechanism through the return air fan, at least one of the dust removal mechanisms is connected to the outer side of the supporting frame, the barrel type crushing mechanism is located in the lower crushing chamber and is coaxially distributed with the lower crushing chamber, and the barrel type crushing mechanism is slidably connected to the inner side of the lower crushing chamber, and is connected to the driving motor through a transmission mechanism, the driving motor and the driving circuit are both connected to the outer side of the supporting frame, and the driving circuit is respectively electrically connected to the roller crusher, the return air fan, the dust removal mechanism, the driving motor, and the main control circuit, and at the same time, a data connection is established with the main control circuit through a communication network.

[0008] Furthermore, the barrel crushing mechanism includes a screening cylinder, an annular screen, a grinding hammer, a grinding ball, a bearing spring plate, an annular rack, a driving gear, an annular bearing guide rail, a guide plate, and a swing arm, wherein the screening cylinder is a truncated cone-shaped cavity structure coaxially distributed with the lower crushing cavity, the screening cylinder is located in the lower crushing cavity and is slidably connected to the inner surface of the lower crushing cavity through at least two annular bearing guide rails, and at the same time, at least one annular rack coaxially distributed with the screening cylinder is arranged outside the screening cylinder, and the annular rack is meshed with the driving gear, and at the same time, the driving gear is connected to the driving motor through a transmission mechanism. The front end face and the rear end face of the screening cylinder are respectively provided with a feed port and an unloading port coaxially distributed therewith, wherein the feed port is connected with the feed port through a guide groove, and the unloading port is connected with the main discharge port through a guide groove, and the diameter of the rear end face of the screening cylinder is not greater than 90% of the diameter of the front end face, and the annular screen piece is an annular structure coaxially distributed with the screening cylinder, embedded in the screening cylinder and connected to the inner side of the screening cylinder, and there are a plurality of annular screen pieces, and the plate surface forms an angle of 45°-90° with the axis of the screening cylinder, and each annular screen piece is distributed along the axis direction of the screening cylinder, and the screening cylinder is divided into The invention is a plurality of screening sections, each of which corresponds to and is connected with an auxiliary discharge port, and each auxiliary discharge port is isolated by a guide plate. At the same time, each auxiliary discharge port is provided with at least four guide plates evenly distributed around its axis, the lower end surface of the guide plate is connected to the inner side surface of the lower crushing chamber, and the upper end surface is abutted against and slidably connected to the outer side surface of the screening body. The side surfaces of the guide plates at the auxiliary discharge port are connected to each other and form a guide channel coaxially distributed with the auxiliary discharge port. The guide channels of the auxiliary discharge ports are connected in parallel to each other. The grinding hammers and grinding balls are multiple and are respectively located at each screening section. In the segment, each grinding hammer is hinged to the inner side of the screening cylinder through a swing arm, and swings back and forth around the hinge axis in the angle range of 0°-180°. At the same time, the rotation axis of the hinge is vertically distributed between the screening cylinder, and a load-bearing spring plate is provided on the inner side of the screening cylinder corresponding to the grinding hammer. At the same time, each grinding hammer is spirally distributed around the axis of the screening cylinder, and at least three grinding hammers are provided in each screening segment. At the same time, at least 5 grinding balls are also provided in each screening segment. The diameter of the grinding ball is 30%-80% of the diameter of the grinding hammer, and is at least 1.1 times the diameter of the center hole of the annular screen.

[0009] Furthermore, the screening cylinder body includes a bearing ring, a bearing beam, a shock-absorbing spring, a main screening rod, and an auxiliary screening rod. The bearing ring is a closed circular ring structure with a cross-section in the shape of "丄", and the number of bearing rings is at least twice the number of screening sections. The bearing rings are coaxially distributed and connected by at least three bearing beams evenly distributed around the axis of the bearing ring. The bearing beam is connected to the outer side surface of the bearing ring and is distributed along the axis direction of the screening cylinder body. There are several main screening rods and auxiliary screening rods, which are distributed between adjacent bearing rings and evenly distributed around the axis of the bearing ring. The axes of the main screening rod and the auxiliary screening rod form an angle of 0° - 45° with the axis of the bearing ring. The rear end surface of the auxiliary screening rod is connected to the highest surface of the inner side surface of the bearing ring near the front end surface of the screening cylinder body. The rear end surface of the main screening rod is connected to the second-level surface of the inner side surface of the bearing ring near the front end surface of the screening cylinder body. The distance between the main screening rod and the auxiliary screening rod is not less than 5 mm. At the same time, the main screening rod and the auxiliary screening rod are spaced apart, and the angle between the main screening rod and the auxiliary screening rod is 0° - 45°. At the same time, the length of the auxiliary screening rod is not greater than 2 / 3 of the length of the main screening rod. At the same time, the front end surface of the main screening rod is connected to the second-level surface of the adjacent bearing ring through a shock-absorbing spring. In addition, the distance between the main screening rods and between the auxiliary screening rods within each screening section decreases gradually from front to back along the axis direction of the screening cylinder body. Furthermore, the annular rack and the annular bearing guide rail are covered outside the screening cylinder body and are connected to the outer side surface of the bearing beam. The annular rack is located between adjacent annular bearing guide rails. At the same time, each annular sieve plate is connected to the highest surface of the inner side surface of the bearing ring.

[0010] Furthermore, the annular sieve plate includes an assembly ring, an elastic hinge, a screening rod, and a protective lining plate. The assembly ring is a closed ring with a cross-section in the shape of an "H"-shaped groove. There are several screening rods, which are evenly distributed around the axis of the assembly ring. The rear end surface is hinged to the bottom of the groove of the inner side surface of the assembly ring through an elastic hinge, and the front end surface of the screening rod points in the direction of the rear end surface of the screening cylinder body. At the same time, the axis of the screening rod intersects with the axis of the screening cylinder body and forms an angle of 15° - 80°. The distance between the screening rods of each annular sieve plate decreases gradually from front to back along the axis direction of the screening cylinder body. In addition, a "凵"-shaped adjustment groove is provided on the groove wall of the assembly ring corresponding to the screening rod, and the screening rod is embedded in the adjustment groove and抵靠并滑动连接 with the groove wall of the assembly ring through the adjustment groove. The protective lining plate is a closed ring structure with a cross-section in the shape of "冂" and is covered outside the inner side surface of the assembly ring.

[0011] Furthermore, the grading material bin includes a silo, a supporting column, a driving auger, a partition, an exciter, a control valve, a material conveying pipe, and a flow sensor, wherein the silo is a cavity structure with an axial cross-section of an inverted isosceles trapezoid, and there are at least two partitions, which are embedded in the silo and divide the silo into at least two distribution chambers distributed parallel to each other, and the bottom of the silo corresponding to each distribution chamber is connected to a material conveying pipe, and the material conveying pipe is a hollow tubular structure with an axial cross-section of a rectangle, the upper end face of which is connected to the silo, and the lower end face is provided with a control valve, and is connected to an external device through the control valve, and at the same time A flow sensor is provided at the lower end surface of the material conveying pipe, and a vibrator is provided on the outer side surface of the material conveying pipe. The number of the driving augers is consistent with the number of the distribution chambers, and each distribution chamber is provided with a driving augers coaxially distributed with the distribution chamber and the material conveying pipe, and the outer diameter of the driving augers is not greater than 1 / 2 of the inner diameter of the distribution chamber. At the same time, there are at least four supporting columns, which are connected to the outer side surface of the silo and are evenly distributed around the axis of the silo, and the axis of the supporting columns forms an angle of 90°-120° with the horizontal plane. At the same time, the driving augers, vibrators, control valves, and flow sensors are all electrically connected to the driving circuit.

[0012] Furthermore, the grading screening mechanism is any one or a combination of a fixed screen, a cylindrical screen, a linear vibrating screen, and a resonance screen; the crusher includes but is not limited to a roll crusher and a jaw crusher.

[0013] Furthermore, the main control circuit includes an electric control cabinet, a control circuit based on a programmable controller, a communication gateway, a serial communication circuit, including but not limited to any one or several common control interfaces such as buttons, keyboards, and displays, wherein the control circuit based on the programmable controller, the communication gateway, and the serial communication circuit are all located in the electric control cabinet, and the control circuit based on the programmable controller is electrically connected to the communication gateway, the serial communication circuit and the control interface respectively, there are at least two control interfaces, and they are embedded in the outer side of the electric control cabinet, and at the same time, a plurality of wire holes are provided on the rear end face of the electric control cabinet corresponding to the communication gateway and the serial communication circuit.

[0014] A working method of a gangue filling aggregate making system with intelligent grading control comprises the following steps:

[0015] S1, capacity design, according to the demand for filling aggregate, production site environment and the required filling aggregate particle size type, on the one hand, set the structure and production output of each level of distribution and screening mechanism, multi-stage adjustable crushing unit, crusher, and graded material bin, and set the conveying efficiency of each material conveying mechanism; on the other hand, design the number, capacity and connection relationship of each level of distribution and screening mechanism and multi-stage adjustable crushing unit in the primary screening subsystem and the secondary screening subsystem through the material conveying mechanism, and then complete the system capacity design;

[0016] S2, system assembly, after completing step S1, assemble the material conveying mechanism, the grading screening mechanism, the multi-stage adjustable crushing unit, the crusher, the grading material bin, the initial material bin and the main control circuit according to the design scheme of step S1 to obtain a finished product production system, and then the main control circuit sets the working parameters of the grading screening mechanism and the multi-stage adjustable crushing unit in the primary sieving molecular system and the secondary sieving molecular system respectively according to the design scheme of step S1, and at the same time sets the connection relationship between the grading screening mechanism and the multi-stage adjustable crushing unit in the primary sieving molecular system and the secondary sieving molecular system by setting the operating state of the material conveying mechanism;

[0017] S3, production and processing, complete step S2, firstly transport the large diameter gangue raw materials for production and processing to the crusher, the crusher performs preliminary crushing on the gangue raw materials to obtain small diameter gangue blocks, and then transports them to the initial silo and grading screening mechanism of the primary screening molecular system through the material conveying mechanism, and then the various levels of grading screening mechanisms of the primary screening molecular system screen and classify the gangue crushed by the crusher according to the particle size, and transport the various types of gangue blocks after screening and classification to the corresponding multi-stage adjustable crushing units in the secondary screening molecular system through the material conveying mechanism, and the multi-stage adjustable crushing units re-classify the gangue of various particle sizes screened by the primary screening molecular system Crushed, and then the gangue particles that have been crushed again are transported to the grading screening mechanism of the secondary screening system through the material conveying mechanism, and the grading screening mechanism screens and classifies the gangue particles crushed by the multi-stage adjustable crushing unit, and then part of the screened and classified gangue particles are directly transported to the external material supply and conveying equipment for production and processing operations; part of them are transported to the grading material bin for buffering and standby; part of the gangue particles whose particle size does not meet the production process are transported to the multi-stage adjustable crushing unit again for crushing operation, and the crushed gangue particles are circulated for screening operation until all the gangue particles are completed and meet the needs of production and processing operations.

[0018] Furthermore, in the step S3, when the crushed gangue particles are transported to the graded material bin, on the one hand, gangue particles of the same particle size are transported to the same graded material bin; on the other hand, gangue particles of different particle sizes are transported to the graded material bin in proportion according to production needs.

[0019] The system structure of the present invention has good versatility and can effectively adapt to the needs of various production processes and production site environments, greatly improving the versatility and environmental adaptability of the system. During operation, on the one hand, it can meet the needs of crushing and granulating raw materials of various materials, and can simultaneously realize the needs of processing operations of granular materials with various particle sizes, and in the process of granular material processing, it can realize the needs of precise proportioning and mixing operations of granular materials with various particle sizes; on the other hand, the system structure can be flexibly adjusted and expanded according to production needs, thereby effectively meeting the needs of different production and processing operations, and also effectively improving the efficiency of production and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;

[0021] Figure 1 It is a schematic diagram of the local structure of the system of the present invention;

[0022] Figure 2 It is a schematic diagram of the local structure of the multi-stage adjustable crushing unit;

[0023] Figure 3 It is a schematic diagram of the partial structure of the lower crushing chamber and the barrel crushing mechanism;

[0024] Figure 4 It is a schematic diagram of the local structure of the screening cylinder;

[0025] Figure 5 It is a schematic diagram of the partial structure of the annular screen piece in side view and section;

[0026] Figure 6 It is a schematic diagram of the partial structure of the annular screen plate from the main view;

[0027] Figure 7 It is a schematic diagram of the local structure of the grading material bin;

[0028] Figure 8 It is a schematic diagram of the partial structure of the main control circuit;

[0029] Fig. 9 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0030] In order to facilitate the construction of the technical means, creative features, objectives and effects achieved by the present invention, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figure 1-Figure 8As shown, a gangue filling aggregate preparation system with intelligent grading control includes a material conveying mechanism 1, a grading screening mechanism 2, a multi-stage adjustable crushing unit 3, a crusher 4, a grading material bin 5, an initial material bin 6 and a main control circuit 7, wherein there is at least one crusher 4, and the crusher 4 is respectively connected to an initial material bin 6 and at least two grading screening mechanisms 2 through the material conveying mechanism 1, and constitutes a primary screening subsystem, and at the same time, each grading screening mechanism 2 in the primary screening subsystem is respectively connected to at least two multi-stage adjustable crushing units 3 through the material conveying mechanism 1, and each multi-stage adjustable crushing unit 3 is connected in parallel with each other, and at the same time, each multi-stage adjustable crushing unit 3 is also respectively connected to at least two grading screening mechanisms 2 through the material conveying mechanism 1, and thus constitutes a secondary screening subsystem; at the same time, the secondary screening Each level of distribution and screening mechanism 2 of the molecular system is respectively connected with at least three material conveying mechanisms 1, and is connected with a grading material bin 5 through at least one of the material conveying mechanisms 1; it is connected with an external material supply and conveying equipment through at least one of the material conveying mechanisms 1; at the same time, it is connected with another adjustment and crushing unit 3 in the secondary screening molecular system through another material conveying mechanism 1, and the grading material bin 5 is respectively connected with the external material supply and conveying equipment through the material conveying mechanism 1; in addition, the initial material bin 6 is also connected with each level of distribution and screening mechanism 2 and the external material supply and conveying equipment in the primary screening molecular system through the material conveying mechanism 1; the main control circuit 7 is electrically connected with the material conveying mechanism 1, the grading screening mechanism 2, the multi-stage adjustable crushing unit 3, the crusher 4, and the grading material bin 5.

[0032] The material conveying mechanism 1 includes but is not limited to any one or a combination of a conveying auger and a belt conveyor.

[0033] It is emphasized that the multi-stage adjustable crushing unit 3 includes a bearing frame 31, a roller crusher 32, a lower crushing chamber 33, a barrel crushing mechanism 34, a return air fan 35, a dust removal mechanism 36, a drive motor 37 and a drive circuit 38, wherein the bearing frame 31 is a frame structure with a rectangular axial section, and the axis of the bearing frame 31 is perpendicular to the horizontal plane, the lower crushing chamber 33 is located in the bearing frame 31 and connected to the bearing frame 31, and the roller crusher 32 is connected to the lower crushing chamber 33. The roller crusher 32 is located above the lower crushing chamber 33 and connected to the upper end surface of the supporting frame 31. The lower crushing chamber 33 is a columnar cavity with a truncated cone-shaped structure in the axial section. The front end surface and the rear end surface are both provided with a feeding port 39 and a main discharge port 301 coaxially distributed therewith. The axis of the lower crushing chamber 33 forms an angle of 15°-45° with the horizontal plane. The diameter of the front end surface of the lower crushing chamber 33 is at least twice the diameter of the rear end surface, and the lower crushing chamber 33 is inclined from the front to the rear. In addition, the lower crushing chamber 33 is arranged in an inclined manner from the front to the rear. The upper end surface of the stage crushing chamber 33 is provided with a plurality of return air ports 302 distributed along the axis thereof, and the lower end surface is provided with a plurality of auxiliary discharge ports 303 distributed along the axis thereof, and the feeding port 39, the main discharge port 301 and each auxiliary discharge port 303 are respectively connected to a material conveying mechanism 1, and at the same time, the return air port 302 is connected to the return air fan 35 through the guide pipe, and is connected to the dust removal mechanism 36 through the return air fan 35, and at least one of the dust removal mechanisms 36 is connected to the outer side of the carrying frame 31, and the barrel crushing mechanism 3 4 is located in the lower crushing chamber 33 and is coaxially distributed with the lower crushing chamber 33, and the barrel crushing mechanism 34 is slidably connected to the inner side of the lower crushing chamber 33 and is connected to the drive motor 37 through a transmission mechanism, the drive motor 37 and the drive circuit 38 are both connected to the outer side of the carrying frame 31, and the drive circuit 38 is electrically connected to the roller crusher 32, the return air fan 35, the dust removal mechanism 36, the drive motor 37, and the main control circuit 7 respectively, and at the same time establishes a data connection with the main control circuit 7 through a communication network.

[0034] For further optimization, the dust removal mechanism 36 is any one of electrostatic dust removal equipment and spray dust removal equipment or a combination of the two.

[0035] The dust removal mechanism cooperates with the return air fan to effectively recover the dust generated during the material crushing process to prevent pollution to the working environment.

[0036] The barrel crushing mechanism 34 includes a screening cylinder 341, an annular screen 342, a grinding hammer 343, a grinding ball 344, a bearing spring plate 345, an annular rack 346, a driving gear 347, an annular bearing guide rail 348, a guide plate 349, and a swing arm 340. The screening cylinder 341 is a truncated cone-shaped cavity structure coaxially distributed with the lower crushing cavity 33. The screening cylinder 341 is located in the lower crushing cavity 33 and is slidably connected to the inner surface of the lower crushing cavity 33 through at least two annular bearing guide rails 348. At the same time, at least one annular rack 346 coaxially distributed with the screening cylinder 341 is provided outside the screening cylinder 341, and the annular rack 346 is meshed with the driving gear 347. At the same time, the driving gear 347 is connected to the driving motor through a transmission mechanism. The front end face and the rear end face of the screening cylinder 341 are respectively provided with a feed port 3410 and an unloading port 3411 coaxially distributed therewith, wherein the feed port 3410 is communicated with the feed port 39 through a guide groove 3412, and the unloading port 3411 is communicated with the main discharge port 301 through a guide groove 3412, and the diameter of the rear end face of the screening cylinder 341 is not greater than 90% of the diameter of the front end face, and the annular screen piece 342 is an annular structure coaxially distributed with the screening cylinder 341, embedded in the screening cylinder 341 and connected to the inner side of the screening cylinder 341, and there are a plurality of annular screen pieces 342, and the plate surface forms an angle of 45°-90° with the axis of the screening cylinder 341, and each annular screen piece 342 is distributed along the axis direction of the screening cylinder 341, and the screening cylinder The body 341 is divided into a plurality of screening sections 3413, and each screening section 3413 corresponds to and is connected to an auxiliary discharge port 303, and each auxiliary discharge port 303 is isolated by a guide plate 349. At the same time, each auxiliary discharge port 303 is provided with at least four guide plates 349 uniformly distributed around its axis, and the lower end surface of the guide plate 349 is connected to the inner side surface of the lower crushing chamber 33, and the upper end surface is abutted against and slidably connected to the outer side surface of the screening body 341. The side surfaces of the guide plates 349 at the auxiliary discharge port 303 are connected to each other, and form a guide channel 3414 coaxially distributed with the auxiliary discharge port 303. The guide channels 3414 of each auxiliary discharge port 303 are connected in parallel with each other. The grinding hammers 343 and the grinding balls 344 are multiple and are respectively located In each screening section 3413, each grinding hammer 343 is hinged to the inner side of the screening cylinder 341 through a swing arm 340, and reciprocates around the hinge axis within an angle range of 0°-180°. At the same time, the rotation axis of the hinge is vertically distributed between the screening cylinder 341, and a load-bearing spring plate 345 is provided on the inner side of the screening cylinder 341 corresponding to the grinding hammer 343. At the same time, each grinding hammer 343 is spirally distributed around the axis of the screening cylinder 341, and at least three grinding hammers 343 are provided in each screening section 3413. At the same time, at least 5 grinding balls 344 are also provided in each screening section 3413. The diameter of the grinding balls 344 is 30%-80% of the diameter of the grinding hammer 343, and is at least 1.1 times the diameter of the center hole of the annular screen plate 342.

[0037] When the barrel crushing mechanism is performing the crushing operation, it is driven to rotate by the driving motor under the cooperation of the annular rack and the driving gear. During the rotation process, the grinding hammer inside it swings and the grinding ball rolls. The impact force of the grinding hammer and the grinding ball during movement is used to grind and crush the gangue. A part of the gangue particles after crushing and grinding are discharged through the auxiliary discharge port corresponding to the screening section, completing the current broken screening operation; the other part of the gangue remaining in the screening cylinder is screened by the annular screen. The gangue screened by the annular screen enters the next screening section along the axis of the screening cylinder and is ground and screened again until the remaining gangue is discharged from the main discharge port, thus completing the crushing, grinding and screening operations of all gangue.

[0038] During operation, the annular screen can not only screen the gangue, but also block and limit the grinding balls to prevent the grinding balls in different screening sections from being unevenly distributed during movement and accumulating at the lowest point of the barrel crushing mechanism, which would cause the crushing and grinding operations to fail.

[0039] In addition, the load-bearing spring plate can elastically bear the grinding hammer during operation, prevent the impact force of the grinding hammer from damaging the screening cylinder and reduce noise during operation.

[0040] Specifically, the screening cylinder body 341 includes a bearing ring 411, a bearing beam 412, a shock-absorbing spring 413, a main screening rod 414, and an auxiliary screening rod 415. The bearing ring 411 is a closed circular ring structure with a cross-section in the shape of "丄", and the number of bearing rings 411 is at least twice the number of screening sections 3413. The bearing rings 411 are coaxially distributed and connected by at least three bearing beams 412 evenly distributed around the axis of the bearing ring 411. The bearing beam 412 is connected to the outer side surface of the bearing ring 411 and is distributed along the axis direction of the screening cylinder body 341. A number of main screening rods 414 and auxiliary screening rods 415 are distributed between two adjacent bearing rings 411 and are evenly distributed around the axis of the bearing ring 411. The axes of the main screening rod 414 and the auxiliary screening rod 415 form an angle of 0° - 45° with the axis of the bearing ring 411. The rear end surface of the auxiliary screening rod 415 is connected to the highest surface of the inner side surface of the bearing ring 411 close to the front end surface of the screening cylinder body 341. The rear end surface of the main screening rod 414 is connected to the second-level surface of the inner side surface of the bearing ring 411 close to the front end surface of the screening cylinder body 341. The distance between the main screening rod 414 and the auxiliary screening rod 415 is not less than 5 mm. At the same time, the main screening rod 414 and the auxiliary screening rod 415 are spaced apart, and the angle between the main screening rod 414 and the auxiliary screening rod 415 is 0° - 45°. At the same time, the length of the auxiliary screening rod 415 is not greater than 2 / 3 of the length of the main screening rod 414. At the same time, the front end surface of the main screening rod 414 is connected to the second-level surface of the adjacent bearing ring 411 through a shock-absorbing spring 413. At the same time, the distances between the main screening rods 414 and between the auxiliary screening rods 415 within each screening section 3413 gradually decrease from front to back along the axis direction of the screening cylinder body 341. In addition, the annular rack 346 and the annular bearing guide rail 348 are covered outside the screening cylinder body 341 and are connected to the outer side surface of the bearing beam 412. The annular rack 346 is located between two adjacent annular bearing guide rails 348. At the same time, each annular sieve plate 342 is connected to the highest surface of the inner side surface of the bearing ring 411.

[0041] By setting the connection between the bearing ring, the bearing beam, the main screening rod and the auxiliary screening rod, a cage-shaped structure is formed, so as to use the main screening rod and the auxiliary screening rod to carry out the screening operation on the gangue. And during the screening process, by using the length difference and the angle between the main screening rod and the auxiliary screening rod, the layered screening operation on the gangue is realized, improving the screening operation efficiency. At the same time, the shock-absorbing spring arranged on the front end surface of the main screening rod, on the one hand, can improve the vibration efficiency and amplitude of the main screening rod under the impact force, improve the screening operation efficiency, and prevent the gangue from getting stuck in the gap between the main screening rod and the auxiliary screening rod. On the other hand, it can effectively reduce the noise during the vibration of the main screening rod.

[0042] Meanwhile, the annular sieve plate 342 includes an assembly ring 3421, elastic hinges 3422, sieve rods 3423, and a protective lining plate 3424. The assembly ring 3421 is a closed ring with a cross-section in the shape of an "H"-shaped groove structure. There are several sieve rods 3423, and each sieve rod 3423 is evenly distributed around the axis of the assembly ring. The rear end face thereof is hinged to the bottom of the groove body on the inner side face of the assembly ring 3421 through an elastic hinge 3422, and the front end face of the sieve rod 3423 points in the direction of the rear end face of the screening cylinder body 341. At the same time, the axis of the sieve rod 3423 intersects with the axis of the screening cylinder body 341 at an angle of 15° - 80°. The spacing between the sieve rods 3423 of each annular sieve plate 342 decreases from front to back along the axis direction of the screening cylinder body 341. In addition, an adjustment groove 3425 in the shape of a "U" is provided on the groove wall of the assembly ring 3421 corresponding to the sieve rod 3423, and the sieve rod 3423 is embedded in the adjustment groove 3425 and abuts against and is slidably connected to the groove wall of the assembly ring 3421 through the adjustment groove 3425. The protective lining plate 3424 is a closed ring structure with a cross-section in the shape of an inverted "U" and is wrapped outside the inner side face of the assembly ring 3421.

[0043] The protective lining plate can wrap and protect the inner side face of the assembly ring, prevent wear and other damages to the assembly ring and the elastic hinges caused by gangue materials, and improve the operation stability of the equipment; during operation, the provided sieve rods can not only perform screening operations on gangue but also block grinding balls.

[0044] In addition, during operation, on the one hand, the provided elastic hinges can improve the convenience of installing and replacing the sieve rods, that is, directly replace individual damaged sieve rods through the elastic hinges, improving the equipment maintenance efficiency; on the other hand, while adjusting the angle of the sieve rods, it can also adjust the vibration amplitude of the sieve rods during equipment operation, thereby improving the efficiency of gangue screening operations.

[0045] In this embodiment, the grading material bin 5 includes a bin 51, a supporting column 52, a driving auger 53, a partition 54, an exciter 55, a control valve 56, a material conveying pipe 57, and a flow sensor 58, wherein the bin 51 is a cavity structure with an axial cross-section of an inverted isosceles trapezoid, and at least two partitions 54 are embedded in the bin 51 and divide the bin 51 into at least two distribution chambers 59 distributed parallel to each other, and the bottom of the bin 51 corresponding to each distribution chamber 59 is connected to a material conveying pipe 57, and the material conveying pipe 57 is a hollow tubular structure with an axial cross-section of a rectangle, its upper end face is connected to the bin 51, and a control valve 56 is arranged on the lower end face, and is connected to an external device through the control valve 56, and at the same time, A flow sensor 58 is provided at the lower end surface of the material conveying pipe 57, and a vibrator 55 is provided on the outer side surface of the material conveying pipe 57. The number of the driving augers 53 is consistent with the number of the distribution chambers 59, and each distribution chamber 59 is provided with a driving augers 53 coaxially distributed with the distribution chamber 59 and the material conveying pipe 57, and the outer diameter of the driving augers 53 is not greater than 1 / 2 of the inner diameter of the distribution chamber 59. At the same time, there are at least four supporting columns 52, which are connected to the outer side surface of the silo 51 and are evenly distributed around the axis of the silo 51, and the axis of the supporting columns 52 is at an angle of 90°-120° with the horizontal plane. At the same time, the driving augers 53, the vibrator 55, the control valve 56, and the flow sensor 58 are all electrically connected to the drive circuit 38.

[0046] Through the multiple distribution chambers divided into them, gangue particles of different particle sizes can be added to each distribution chamber in proportion at the same time, and then transported to external equipment through their respective material conveying pipes for subsequent processing. At the same time, the gangue in each distribution chamber is measured and transported to external equipment through the flow sensor and control valve, so as to achieve the need of proportioning gangue aggregates of different particle sizes;

[0047] In this embodiment, the grading screening mechanism 2 is any one of a fixed screen, a cylindrical screen, a linear vibrating screen, and a resonance screen, or a combination of the two. The crusher includes but is not limited to a roller crusher and a jaw crusher.

[0048] In this embodiment, the main control circuit 7 includes an electric control cabinet 71, a control circuit 72 based on a programmable controller, a communication gateway 73, a serial communication circuit 74, and a common control interface 75 including but not limited to any one or several of buttons, keyboards, and displays, wherein the control circuit 72 based on a programmable controller, the communication gateway 73, and the serial communication circuit 74 are all located in the electric control cabinet 71, and the control circuit 72 based on a programmable controller is electrically connected to the communication gateway 73, the serial communication circuit 74, and the control interface 75, respectively. There are at least two control interfaces 75, which are embedded in the outer side of the electric control cabinet 71, and a plurality of wire holes 76 are provided on the rear end face of the electric control cabinet 71 corresponding to the communication gateway 73 and the serial communication circuit 74.

[0049] A working method of a gangue filling aggregate making system with intelligent grading control comprises the following steps:

[0050] S1, capacity design, according to the demand for filling aggregate, production site environment and the required filling aggregate particle size type, on the one hand, set the structure and production output of each level of distribution and screening mechanism, multi-stage adjustable crushing unit, crusher, and graded material bin, and set the conveying efficiency of each material conveying mechanism; on the other hand, design the number, capacity and connection relationship of each level of distribution and screening mechanism and multi-stage adjustable crushing unit in the primary screening subsystem and the secondary screening subsystem through the material conveying mechanism, and then complete the system capacity design;

[0051] S2, system assembly, after completing step S1, assemble the material conveying mechanism, the grading screening mechanism, the multi-stage adjustable crushing unit, the crusher, the grading material bin, the initial material bin and the main control circuit according to the design scheme of step S1 to obtain a finished product production system, and then the main control circuit sets the working parameters of the grading screening mechanism and the multi-stage adjustable crushing unit in the primary sieving molecular system and the secondary sieving molecular system respectively according to the design scheme of step S1, and at the same time sets the connection relationship between the grading screening mechanism and the multi-stage adjustable crushing unit in the primary sieving molecular system and the secondary sieving molecular system by setting the operating state of the material conveying mechanism;

[0052] S3, production and processing, complete step S2, firstly transport the large diameter gangue raw materials for production and processing to the crusher, the crusher performs preliminary crushing on the gangue raw materials to obtain small diameter gangue blocks, and then transports them to the initial silo and grading screening mechanism of the primary screening molecular system through the material conveying mechanism, and then the various levels of grading screening mechanisms of the primary screening molecular system screen and classify the gangue crushed by the crusher according to the particle size, and transport the various types of gangue blocks after screening and classification to the corresponding multi-stage adjustable crushing units in the secondary screening molecular system through the material conveying mechanism, and the multi-stage adjustable crushing units re-classify the gangue of various particle sizes screened by the primary screening molecular system Crushed, and then the gangue particles that have been crushed again are transported to the grading screening mechanism of the secondary screening system through the material conveying mechanism, and the grading screening mechanism screens and classifies the gangue particles crushed by the multi-stage adjustable crushing unit, and then part of the screened and classified gangue particles are directly transported to the external material supply and conveying equipment for production and processing operations; part of them are transported to the grading material bin for buffering and standby; part of the gangue particles whose particle size does not meet the production process are transported to the multi-stage adjustable crushing unit again for crushing operation, and the crushed gangue particles are circulated for screening operation until all the gangue particles are completed and meet the needs of production and processing operations.

[0053] In this embodiment, in the step S3, when the crushed gangue particles are transported to the graded material bin, on the one hand, gangue particles of the same particle size are transported to the same graded material bin; on the other hand, gangue particles of different particle sizes are transported to the graded material bin in proportion according to production needs.

[0054] The system structure of the present invention has good versatility and can effectively adapt to the needs of various production processes and production site environments, greatly improving the versatility and environmental adaptability of the system. During operation, on the one hand, it can meet the needs of crushing and granulating raw materials of various materials, and can simultaneously realize the needs of processing operations of granular materials with various particle sizes, and in the process of granular material processing, it can realize the needs of precise proportioning and mixing operations of granular materials with various particle sizes; on the other hand, the system structure can be flexibly adjusted and expanded according to production needs, thereby effectively meeting the needs of different production and processing operations, and also effectively improving the efficiency of production and processing.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A gangue filling aggregate material making system with intelligent grading control, characterized in that: The graded intelligently controlled gangue filling aggregate material making system comprises a material conveying mechanism, a graded screening mechanism, a multi-stage adjustable crushing unit, a crusher, a graded material bin, an initial material bin and a main control circuit, wherein there is at least one crusher, and the crusher is respectively connected to an initial material bin and at least two graded screening mechanisms through the material conveying mechanism, and constitutes a primary screening subsystem, and at the same time, each graded screening mechanism in the primary screening subsystem is respectively connected to at least two multi-stage adjustable crushing units through the material conveying mechanism, and each multi-stage adjustable crushing unit is connected in parallel with each other, and at the same time, each multi-stage adjustable crushing unit is also respectively connected to at least two graded screening mechanisms through the material conveying mechanism, and thus constitutes a secondary screening subsystem; at the same time, Each level of distribution and screening mechanism is connected with at least three material conveying mechanisms respectively, and is connected with a grading material bin through at least one of the material conveying mechanisms; it is connected with an external material supply and conveying equipment through at least one of the material conveying mechanisms; at the same time, it is connected with another adjustment and crushing unit in the secondary screening subsystem through another material conveying mechanism. In addition, the grading material bin is connected with the external material supply and conveying equipment through the material conveying mechanism respectively; in addition, the initial material bin is connected with the each level of distribution and screening mechanism and the external material supply and conveying equipment in the primary screening subsystem through the material conveying mechanism respectively; the main control circuit is electrically connected with the material conveying mechanism, the grading screening mechanism, the multi-stage adjustable crushing unit, the crusher, and the grading material bin respectively.

2. The grading intelligently controlled gangue filling aggregate making system according to claim 1 is characterized in that: The multi-stage adjustable crushing unit includes a bearing frame, a roller crusher, a lower crushing chamber, a barrel crushing mechanism, a return fan, a dust removal mechanism, a drive motor and a drive circuit, wherein the bearing frame is a frame structure with a rectangular axial section, and the axis of the bearing frame is vertically distributed to the horizontal plane, the lower crushing chambers are all located in the bearing frame and connected to the bearing frame, the roller crusher is connected to the lower crushing chamber, and the roller crusher is located above the lower crushing chamber and connected to the upper end surface of the bearing frame, the lower crushing chamber is a columnar cavity with a truncated cone structure in the axial section, and the front end face and the rear end face are both provided with a feeding port and a main discharge port coaxially distributed therewith, the axis of the lower crushing chamber is at an angle of 15°-45° to the horizontal plane, the diameter of the front end face of the lower crushing chamber is at least twice the diameter of the rear end face, and the lower crushing chamber is tilted and distributed from front to rear, in addition, The upper end surface of the lower crushing chamber is provided with a plurality of return air ports distributed along its axis, and the lower end surface is provided with a plurality of auxiliary discharge ports distributed along its axis, and the feeding port, the main discharge port and the auxiliary discharge ports are respectively connected to a material conveying mechanism, and the return air port is connected to the return air fan through the guide pipe, and is connected to the dust removal mechanism through the return air fan, at least one of the dust removal mechanisms is connected to the outer side of the supporting frame, the barrel type crushing mechanism is located in the lower crushing chamber and is coaxially distributed with the lower crushing chamber, and the barrel type crushing mechanism is slidably connected to the inner side of the lower crushing chamber, and is connected to the driving motor through the transmission mechanism, the driving motor and the driving circuit are both connected to the outer side of the supporting frame, and the driving circuit is respectively electrically connected to the roller crusher, the return air fan, the dust removal mechanism, the driving motor and the main control circuit, and at the same time, a data connection is established with the main control circuit through a communication network.

3. The gangue filling aggregate making system with intelligent grading control according to claim 2 is characterized in that: The barrel crushing mechanism includes a screening cylinder, an annular screen, a grinding hammer, a grinding ball, a bearing spring plate, an annular rack, a driving gear, an annular bearing guide rail, a guide plate, and a swing arm, wherein the screening cylinder is a truncated cone-shaped cavity structure coaxially distributed with the lower crushing cavity, the screening cylinder is located in the lower crushing cavity and is slidably connected to the inner surface of the lower crushing cavity through at least two annular bearing guide rails, and at the same time, at least one annular rack coaxially distributed with the screening cylinder is arranged outside the screening cylinder, and the annular rack is meshed with the driving gear, and the driving gear is connected to the driving motor through a transmission mechanism. The front end face and the rear end face of the screening cylinder are respectively provided with a feed port and an unloading port coaxially distributed therewith, wherein the feed port is connected with the feed port through a guide groove, and the unloading port is connected with the main discharge port through a guide groove, and the diameter of the rear end face of the screening cylinder is not greater than 90% of the diameter of the front end face, and the annular screen piece is an annular structure coaxially distributed with the screening cylinder, embedded in the screening cylinder and connected to the inner side of the screening cylinder, and the annular screen pieces are multiple, and the plate surface forms an angle of 45°-90° with the axis of the screening cylinder, and each annular screen piece is distributed along the axis direction of the screening cylinder, and the screening cylinder is divided into a plurality of Screening section, at the same time, each screening section corresponds to and is connected with an auxiliary discharge port, and each auxiliary discharge port is isolated by a guide plate, and at the same time, each auxiliary discharge port is provided with at least four guide plates evenly distributed around its axis, the lower end surface of the guide plate is connected to the inner side surface of the lower crushing chamber, and the upper end surface is against and slidably connected to the outer side surface of the screening body, the side surfaces of the guide plates at the auxiliary discharge port are connected to each other, and form a guide channel coaxially distributed with the auxiliary discharge port, and the guide channels of the auxiliary discharge ports are connected in parallel with each other, and the grinding hammers and grinding balls are multiple, and are respectively located in each screening section , wherein each grinding hammer is hinged to the inner side of the screening cylinder through a swing arm, and swings back and forth within an angle range of 0°-180° around the hinge axis, and the rotation axis of the hinge is vertically distributed between the screening cylinder, and a load-bearing spring plate is provided on the inner side of the screening cylinder corresponding to the grinding hammer, and each grinding hammer is spirally distributed around the axis of the screening cylinder, and at least three grinding hammers are provided in each screening section, and at least 5 grinding balls are provided in each screening section, and the diameter of the grinding ball is 30%-80% of the diameter of the grinding hammer, and is at least 1.1 times the diameter of the center hole of the annular screen.

4. The gangue filling aggregate making system with intelligent grading control according to claim 3 is characterized in that: The screening cylinder body includes a bearing ring, a bearing beam, a shock-absorbing spring, a main sieve rod, and an auxiliary sieve rod. The bearing ring is a closed circular ring structure with a cross-section in the shape of "丄", and the number of bearing rings is at least twice the number of screening sections. The bearing rings are coaxially distributed and connected by at least three bearing beams evenly distributed around the axis of the bearing ring. The bearing beam is connected to the outer side surface of the bearing ring and is distributed along the axis direction of the screening cylinder body. A number of main sieve rods and auxiliary sieve rods are distributed between adjacent bearing rings and are evenly distributed around the axis of the bearing ring. The axes of the main sieve rod and the auxiliary sieve rod form an angle of 0° - 45° with the axis of the bearing ring. The rear end surface of the auxiliary sieve rod is connected to the highest surface of the inner side surface of the bearing ring near the front end surface of the screening cylinder body. The rear end surface of the main sieve rod is connected to the second-level surface of the inner side surface of the bearing ring near the front end surface of the screening cylinder body. The distance between the main sieve rod and the auxiliary sieve rod is not less than 5 mm, and they are spaced apart. The angle between the main sieve rod and the auxiliary sieve rod is 0° - 45°. At the same time, the length of the auxiliary sieve rod is not greater than 2 / 3 of the length of the main sieve rod. At the same time, the front end surface of the main sieve rod is connected to the second-level surface of the adjacent bearing ring through a shock-absorbing spring. At the same time, the distance between the main sieve rods and between the auxiliary sieve rods within each screening section gradually decreases from front to back along the axis direction of the screening cylinder body. In addition, the annular rack and the annular bearing guide are coated outside the screening cylinder body and are connected to the outer side surface of the bearing beam. The annular rack is located between adjacent annular bearing guides. At the same time, each annular sieve plate is connected to the highest surface of the inner side surface of the bearing ring.

5. A gangue filling aggregate making system with intelligent grading control according to claim 3 or 4, characterized in that: The annular sieve plate includes an assembly ring, an elastic hinge, a sieve rod, and a protective lining plate. The assembly ring is a closed ring with a cross-section in the shape of an "H"-shaped groove. A number of sieve rods are evenly distributed around the axis of the assembly ring. The rear end surface is hinged to the bottom of the groove of the inner side surface of the assembly ring through an elastic hinge. The front end surface of the sieve rod points in the direction of the rear end surface of the screening cylinder body. At the same time, the axis of the sieve rod intersects with the axis of the screening cylinder body and forms an angle of 15° - 80°. The distance between the sieve rods of each annular sieve plate gradually decreases from front to back along the axis direction of the screening cylinder body. In addition, a "凵"-shaped adjustment groove is provided on the groove wall of the assembly ring corresponding to the sieve rod. The sieve rod is embedded in the adjustment groove and抵靠并滑动连接 with the groove wall of the assembly ring through the adjustment groove. The protective lining plate is a closed ring structure with a cross-section in the shape of "冂" and is coated outside the inner side surface of the assembly ring.

6. The grading intelligently controlled gangue filling aggregate making system according to claim 1 is characterized in that: The grading material bin comprises a silo, a bearing column, a driving auger, a partition, an exciter, a control valve, a material conveying pipe, and a flow sensor, wherein the silo is a cavity structure with an axial cross section of an inverted isosceles trapezoid, at least two partitions are embedded in the silo and divide the silo into at least two distribution chambers distributed parallel to each other, the bottom of the silo corresponding to each distribution chamber is connected to a material conveying pipe, and the material conveying pipe is a hollow tubular structure with an axial cross section of a rectangle, the upper end face of which is connected to the silo, the lower end face is provided with a control valve, and is connected to an external device through the control valve, and the material conveying pipe is connected to the silo. A flow sensor is provided at the lower end surface of the delivery pipe, and a vibrator is provided on the outer side surface of the material delivery pipe. The number of the driving augers is consistent with the number of distribution chambers, and each distribution chamber is provided with a driving augers coaxially distributed with the distribution chamber and the material delivery pipe, and the outer diameter of the driving augers is not greater than 1 / 2 of the inner diameter of the distribution chamber. At the same time, there are at least four supporting columns, which are connected to the outer side surface of the silo and are evenly distributed around the axis of the silo, and the axis of the supporting columns is at an angle of 90°-120° with the horizontal plane. At the same time, the driving augers, vibrators, control valves, and flow sensors are all electrically connected to the drive circuit.

7. The gangue filling aggregate making system with intelligent grading control according to claim 1 is characterized in that: The grading screening mechanism is any one or a combination of a fixed screen, a cylindrical screen, a linear vibrating screen, and a resonance screen; the crusher includes but is not limited to a roll crusher and a jaw crusher.

8. A gangue filling aggregate making system with intelligent grading control according to claim 1 or 6, characterized in that: The main control circuit includes an electric control cabinet, a control circuit based on a programmable controller, a communication gateway, a serial communication circuit, including but not limited to any one or several common control interfaces such as buttons, keyboards, and displays, wherein the control circuit based on the programmable controller, the communication gateway, and the serial communication circuit are all located in the electric control cabinet, and the control circuit based on the programmable controller is electrically connected to the communication gateway, the serial communication circuit and the control interface respectively, there are at least two control interfaces, and they are embedded in the outer side of the electric control cabinet, and at the same time, a plurality of wire holes are arranged on the rear end face of the electric control cabinet corresponding to the communication gateway and the serial communication circuit.

9. The working method of a gangue filling aggregate making system with intelligent grading control according to claim 1 is characterized in that: The working method of the gangue filling aggregate making system comprises the following steps: S1, capacity design, according to the demand for filling aggregate, production site environment and the required filling aggregate particle size type, on the one hand, set the structure and production output of each level of distribution and screening mechanism, multi-stage adjustable crushing unit, crusher, and graded material bin, and set the conveying efficiency of each material conveying mechanism; on the other hand, design the number, capacity and connection relationship of each level of distribution and screening mechanism and multi-stage adjustable crushing unit in the primary screening subsystem and the secondary screening subsystem through the material conveying mechanism, and then complete the system capacity design; S2, system assembly, after completing step S1, assemble the material conveying mechanism, the grading screening mechanism, the multi-stage adjustable crushing unit, the crusher, the grading material bin, the initial material bin and the main control circuit according to the design scheme of step S1 to obtain a finished product production system, and then the main control circuit sets the working parameters of the grading screening mechanism and the multi-stage adjustable crushing unit in the primary sieving molecular system and the secondary sieving molecular system respectively according to the design scheme of step S1, and at the same time sets the connection relationship between the grading screening mechanism and the multi-stage adjustable crushing unit in the primary sieving molecular system and the secondary sieving molecular system by setting the operating state of the material conveying mechanism; S3, production and processing, complete step S2, firstly transport the large diameter gangue raw materials for production and processing to the crusher, the crusher performs preliminary crushing on the gangue raw materials to obtain small diameter gangue blocks, and then transports them to the initial silo and grading screening mechanism of the primary screening molecular system through the material conveying mechanism, and then the various levels of grading screening mechanisms of the primary screening molecular system screen and classify the gangue crushed by the crusher according to the particle size, and transport the various types of gangue blocks after screening and classification to the corresponding multi-stage adjustable crushing units in the secondary screening molecular system through the material conveying mechanism, and the multi-stage adjustable crushing units re-classify the gangue of various particle sizes screened by the primary screening molecular system Crushed, and then the gangue particles that have been crushed again are transported to the grading screening mechanism of the secondary screening system through the material conveying mechanism, and the grading screening mechanism screens and classifies the gangue particles crushed by the multi-stage adjustable crushing unit, and then part of the screened and classified gangue particles are directly transported to the external material supply and conveying equipment for production and processing operations; part of them are transported to the grading material bin for buffering and standby; part of the gangue particles whose particle size does not meet the production process are transported to the multi-stage adjustable crushing unit again for crushing operation, and the crushed gangue particles are circulated for screening operation until all the gangue particles are completed and meet the needs of production and processing operations.

10. The working method of the gangue filling aggregate making system with intelligent grading control according to claim 9 is characterized in that: In the step S3, when the crushed gangue particles are transported to the graded material bin, on the one hand, gangue particles of the same particle size are transported to the same graded material bin; on the other hand, gangue particles of different particle sizes are transported to the graded material bin in proportion according to production needs.

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