Multi-stage material distribution device and segregation material distribution intelligent dry separator

Abstract

The utility model relates to the technical field of preparation equipment, in particular to a multi-stage material distribution device and a segregation material distribution intelligent dry separator. The multi-stage material distributing device comprises a first-stage conveying mechanism, a second-stage conveying mechanism, a first-stage sliding plate and a second-stage sliding plate. The first-stage conveying mechanism and the second-stage conveying mechanism are arranged in a step shape, the first-stage sliding plate and the second-stage sliding plate are obliquely arranged, the first-stage sliding plate is connected with the first-stage conveying mechanism and upstream equipment, and the second-stage sliding plate is connected with the first-stage conveying mechanism and the second-stage conveying mechanism; materials conveyed by upstream equipment are sequentially accelerated through the first-stage sliding plate and the first-stage conveying mechanism and then pass through the second-stage sliding plate to enter the second-stage conveying mechanism. Materials are accelerated multiple times through the first-stage sliding plate and the first-stage conveying mechanism, all blocks of the materials can be pulled open, and therefore the overlying rate is reduced; and the materials do not make contact with the second-stage sliding plate in the process of entering the second-stage conveying mechanism from the first-stage conveying mechanism, and the situation that the original posture of the materials is changed, and the material distribution effect is affected can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing equipment technology, specifically to a multi-stage feeding device and a segregation feeding intelligent dry separator. Background Technology

[0002] Intelligent dry separators are one of the mainstream equipment in dry coal preparation. During the separation process, intelligent dry separators use intelligent identification methods to establish an analysis model adapted to the coal quality characteristics of the raw coal. Through big data analysis, they digitally identify coal and gangue, separating the raw coal into two categories of materials: products. Finally, a high-pressure air intelligent gangue removal system is used to blow gangue, changing the original trajectory of the gangue so that it enters a chute further away, while the clean coal that is not blown enters a chute closer to the surface, ultimately yielding two products.

[0003] Currently, intelligent dry separators typically use vibrating cloth belts for feeding. Increasing the feed rate to increase the throughput of these separators can lead to a rise in material adhesion and compaction. Excessive compaction can negatively impact the separator's sorting performance. Therefore, while increasing throughput, reducing particle compaction and improving recognition and processing accuracy are crucial. Utility Model Content

[0004] The main purpose of this utility model is to provide a multi-stage material feeding device to solve the problem of material adhesion and stacking caused by large processing volume while increasing the processing capacity, and improve the sorting accuracy; this utility model also provides a segregation material intelligent dry sorting machine, including the above-mentioned multi-stage material feeding device.

[0005] To achieve the above objectives, one embodiment of the present invention provides a multi-stage fabric feeding device, comprising: a primary conveying mechanism, a secondary conveying mechanism, a primary slide plate, and a secondary slide plate;

[0006] The primary conveying mechanism and the secondary conveying mechanism are arranged in a stepped manner. Both the primary slide plate and the secondary slide plate are inclined. The primary slide plate connects the primary conveying mechanism and the upstream equipment, and the secondary slide plate connects the primary conveying mechanism and the secondary conveying mechanism. The material conveyed by the upstream equipment is accelerated sequentially by the primary slide plate and the primary conveying mechanism, and then passes over the secondary slide plate to enter the secondary conveying mechanism.

[0007] Furthermore, the tilt angle α2 of the secondary slide plate is less than or equal to 20°.

[0008] Furthermore, the length L2 of the secondary slide plate should satisfy:

[0009] In the formula, g is the acceleration due to gravity;

[0010] V2 is the speed at which the material is discharged from the primary conveying mechanism.

[0011] Furthermore, the primary conveying mechanism is a primary conveyor belt, and the secondary conveying mechanism is a secondary conveyor belt.

[0012] Furthermore, the operating speed of the secondary conveyor belt is greater than that of the primary conveyor belt.

[0013] Furthermore, the primary conveying mechanism is a material conveying roller, and the secondary conveying mechanism is a secondary conveyor belt;

[0014] The conveying rollers include multiple rollers arranged in sequence, and the speed of the rollers increases along the material conveying direction.

[0015] Furthermore, the speed difference between two adjacent rollers ranges from 0.05 to 0.07 m / s.

[0016] Furthermore, the speed of the roller at the end of the conveying roller is the same as the speed of the secondary conveyor belt.

[0017] Another embodiment of this utility model provides an intelligent dry separation machine for segregated fabric, including the multi-stage fabric device described in any of the above embodiments.

[0018] Furthermore, the upstream equipment is a feeding device; the feeding device is used to classify the material according to particle size and to arrange the material in a graded manner along the width direction of the multi-stage feeding device.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a multi-stage fabric feeding device, comprising: a primary conveying mechanism, a secondary conveying mechanism, a primary slide plate, and a secondary slide plate; the primary conveying mechanism and the secondary conveying mechanism are arranged in a stepped manner, the primary slide plate and the secondary slide plate are both inclined, and the primary slide plate connects the primary conveying mechanism and the upstream equipment, and the secondary slide plate connects the primary conveying mechanism and the secondary conveying mechanism; the material conveyed by the upstream equipment is accelerated sequentially by the primary slide plate and the primary conveying mechanism, and then passes over the secondary slide plate to enter the secondary conveying mechanism.

[0021] By accelerating the material multiple times through the primary slide plate and the primary conveyor mechanism, the individual blocks of the material can be separated, thereby reducing the stacking rate. Furthermore, the material does not come into contact with the secondary slide plate during its journey from the primary conveyor mechanism to the secondary conveyor mechanism, thus preventing changes in the material's original posture and ensuring a smooth fabric application. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram showing the stacking of blocks during the transport process.

[0024] Figure 2 A schematic diagram of the structure of the multi-stage fabric distribution device provided in the embodiments of this utility model;

[0025] Figure 3 A schematic diagram of the structure of a multi-stage fabric distribution device provided in another embodiment of this utility model;

[0026] Figure 4 A schematic diagram of the structure of the first feeding device provided in the embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the second feeding device provided in the embodiment of the present utility model;

[0028] Figure 6 A schematic diagram of the structure of the third feeding device provided in this embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the first embodiment of the jet blowing device provided in this utility model.

[0030] Figure 8 This is a schematic diagram of the second embodiment of the jetting device provided in this utility model.

[0031] Icons: 1-Feeding device; 11-Screen; 111-Discharge port; 12-Roller screen; 121-Roller; 13-Vibrating feeder;

[0032] 2-Multi-stage fabric distribution device; 21-First-stage slide plate; 22-Second-stage slide plate; 23-First-stage conveyor mechanism; 231-First-stage conveyor belt; 232-Feeding roller; 233-Roller; 24-Second-stage conveyor mechanism; 241-Second-stage conveyor belt;

[0033] 3-Pulse jetting device; 31-Valve box; 311-Pulse jetting area; 312-Valve orifice;

[0034] 41-Identification module; 42-Receiving module;

[0035] 5-Coverage. Detailed Implementation

[0036] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Overlapping can easily occur during coal sorting, such as... Figure 1 As shown, overlapping increases the probability of misidentification, directly affecting sorting indicators. To address this, one embodiment of this invention provides a multi-stage material feeding device 2, which accelerates the material step by step through multi-stage acceleration, while simultaneously increasing the distance between the material blocks, thereby reducing the adhesion and overlapping of the blocks.

[0038] Specifically, such as Figure 2 and Figure 3 As shown, the multi-stage fabric feeding device 2 provided in this embodiment of the present invention includes: a primary conveying mechanism 23, a secondary conveying mechanism 24, a primary slide plate 21, and a secondary slide plate 22; the primary conveying mechanism 23 and the secondary conveying mechanism 24 are arranged in a stepped manner, the primary slide plate 21 and the secondary slide plate 22 are both inclined, and the primary slide plate 21 connects the primary conveying mechanism 23 and the upstream equipment, and the secondary slide plate 22 connects the primary conveying mechanism 23 and the secondary conveying mechanism 24; the material conveyed by the upstream equipment is accelerated sequentially through the primary slide plate 21 and the primary conveying mechanism 23 and then passes over the secondary slide plate 22 into the secondary conveying mechanism 24.

[0039] In this embodiment, the multi-stage material distribution device 2 has a primary conveying mechanism 23 positioned higher than the secondary conveying mechanism 24. After the material conveyed from the upstream equipment enters the multi-stage material distribution device 2, it sequentially passes through the primary slide plate 21, the primary conveying mechanism 23, the secondary slide plate 22, and the secondary conveying mechanism 24 before exiting the device. Both the primary slide plate 21 and the primary conveying mechanism 23 are used to accelerate the material. The secondary conveying mechanism 24 can also accelerate the material or maintain the speed at which it exits from the primary conveying mechanism 23. The material does not contact the secondary slide plate 22 during its journey from the primary conveying mechanism 23 to the secondary conveying mechanism 24. The secondary slide plate 22 primarily controls the dispersion range of the material when it is ejected from the primary conveying mechanism 23, preventing the spillage of fine materials. Furthermore, the material does not come into contact with the secondary slide plate 24. The contact between the material and the secondary slide plate 22 can prevent the material from impacting the slide plate and causing secondary tumbling due to the force of the vertical slide plate when the material enters the secondary slide plate 22, which would affect the fabric application. At the same time, due to the influence of factors such as the shape and size of each piece of material, as well as the moisture content and particle size distribution of the material, different pieces of material will accelerate differently. If the material comes into contact with the secondary slide plate 22, flat pieces will adhere to the secondary slide plate 22 and accelerate, while round pieces will tumble and accelerate on the secondary slide plate 22. In wet and sticky conditions, small pieces of material will have increased friction on the secondary slide plate 22, resulting in material accumulation when sliding out, which affects the fabric application. The fact that the material does not come into contact with the secondary slide plate 22 during the process of entering the secondary conveyor 24 from the primary conveyor 23 can effectively solve the above problems.

[0040] In use, the material conveyed by the upstream equipment first enters the primary slide plate 21. The material accelerates on the primary slide plate 21, and the spacing between the material blocks is widened during the sliding process on the primary slide plate 21, thereby making the material blocks evenly distributed and reducing the stacking rate. The material slides from the primary slide plate 21 into the primary conveying mechanism 23, and is further accelerated on the primary conveying mechanism 23. That is, the speed at which the material is discharged from the primary conveying mechanism 23 is greater than the speed at which the material is discharged from the primary slide plate 21. The primary conveying mechanism 23 can further widen the material blocks, so that the material can be spread into a single layer on the primary conveying mechanism 23, thereby reducing the stacking rate. Furthermore, when the secondary conveying mechanism 24 can also accelerate the material, the material entering the secondary conveying mechanism 24 is further accelerated, causing the sticky material to separate into independent individuals; while when the secondary conveying mechanism 24 only keeps the material at the speed when it is discharged from the primary conveying mechanism 23, since the speed of the material when it is discharged from the primary conveying mechanism 23 is the same as the speed of the secondary conveying mechanism 24, the posture of the material on the secondary conveying mechanism 24 is the same as that on the primary conveying mechanism 23, and a low stacking ratio can be maintained.

[0041] Preferably, in this embodiment, the speed difference between the material discharged from the primary slide plate 21 and the primary conveying mechanism 23 is less than or equal to 1 m / s; when the secondary conveying mechanism 24 is also used to accelerate the material, the speed difference between the material discharged from the primary conveying mechanism 23 and the secondary conveying mechanism 24 is less than or equal to 1 m / s; a smaller speed difference can reduce the problem of secondary tumbling of the block.

[0042] The multi-stage fabric spreading device 2 provided in this embodiment accelerates the material multiple times through the first-stage slide plate 21 and the first-stage conveying mechanism 23, which can separate the material blocks and reduce the stacking rate. The material does not come into contact with the second-stage slide plate 22 during the process of entering the second-stage conveying mechanism 24 from the first-stage conveying mechanism 23, which can avoid the material's original posture from changing during the process of entering the second-stage conveying mechanism 24 from the first-stage conveying mechanism 23, thus affecting the spreading effect.

[0043] The multi-stage fabric spreading device 2 provided in this embodiment of the utility model has a tilt angle α2 of the secondary slide plate 22 that is less than or equal to 20°, so that the primary conveying mechanism 23 and the secondary conveying mechanism 24 are on nearly the same plane. This can prevent the material blocks from entering the secondary conveying mechanism 24 by falling, and prevent the material blocks from rolling twice when entering the secondary conveying mechanism 24, thereby improving the fabric spreading effect.

[0044] The multi-stage fabric feeding device 2 provided in this embodiment of the utility model shall have a length L2 of the secondary slide plate 22 that satisfies the following:

[0045] In the formula, g is the acceleration due to gravity;

[0046] V2 is the speed at which the material is discharged from the primary conveying mechanism 23.

[0047] In this embodiment, to avoid contact between materials at each stage and the secondary slide plate 22, affecting the movement path of the materials at each stage, the length L2 of the secondary slide plate 22 should satisfy:

[0048] L2≤V2×t3;

[0049] Where t3 is the time required for each level of material to be thrown from the primary conveying mechanism 23 into the secondary conveying mechanism 24, and V2 is the velocity of the material when it is discharged from the primary conveying mechanism 23. Since the flight time of each level of material is short, the air resistance can be ignored. Thus, we can conclude that:

[0050]

[0051] In the formula, g is the acceleration due to gravity;

[0052] α2 is the tilt angle of the secondary skateboard 22;

[0053] Furthermore, we can conclude that:

[0054] In one embodiment of the multi-stage fabric distribution device 2, such as Figure 2 As shown, both the primary conveying mechanism 23 and the secondary conveying mechanism 24 are conveyor belts. For ease of description, the primary conveying mechanism 23 is referred to as the primary conveyor belt 231, and the secondary conveying mechanism 24 is referred to as the secondary conveyor belt 241. Conveyor belts are characterized by their simple structure, low cost, and good material distribution effect. Furthermore, the operating speed of the secondary conveyor belt 241 is greater than that of the primary conveyor belt 231. That is, in this embodiment, the secondary conveyor belt 241 can further accelerate the material, causing the adhered material to be further separated into independent individuals, thereby reducing the material stacking rate.

[0055] Specifically, the material conveyed by the upstream equipment enters the primary slide plate 21 at an initial speed of V0. The material slides on the primary slide plate 21 and accelerates to V1, and the material blocks are separated during this sliding process, resulting in a more uniform distribution of material blocks and reduced stacking. The material then enters the primary conveyor belt 231 from the primary slide plate 21. The operating speed of the primary conveyor belt 231 is higher than the speed at which the material exits from the primary slide plate 21. The primary conveyor belt 231 further accelerates the material to a speed of V2, further separating the material blocks and allowing the material to spread evenly in a single layer on the primary conveyor belt 231. At this point, the material is relatively stationary with respect to the primary conveyor belt 231, meaning the operating speed of the primary conveyor belt 231 is V2. The material is then ejected from a nearly horizontal position and passes through the secondary slide plate... Plate 22 enters the secondary conveyor belt 241, and correspondingly, V2 is the horizontal velocity of the material; the inclination angle of the secondary slide plate 22 is less than or equal to 20°, preferably greater than or equal to 5° and less than or equal to 15°; the secondary slide plate 22 is mainly used to control the dispersion range of the material when it is thrown out from the primary fabric conveyor belt, to prevent fine materials from spilling, and to prevent material blocks from entering the secondary fabric conveyor belt by falling, thus preventing material blocks from entering the secondary fabric conveyor belt; after the material enters the secondary conveyor belt 241, the speed difference between the material and the secondary conveyor belt 241 can further separate the material blocks, that is, the running speed of the secondary conveyor belt 241 is greater than the running speed of the primary conveyor belt 231, and the material blocks are accelerated by the secondary conveyor belt 241 to V2. max They are separated into independent individuals with a smaller adhesion and overlapping rate for subsequent identification.

[0056] Preferably, in this embodiment, α2 ≤ 20°, thus the dimension range of the length L2 of the secondary slide plate 22 can be obtained as follows:

[0057]

[0058] Furthermore, in this embodiment, V0 <V1<V2<Vnax ,in:

[0059] V1 = V0 + a1 × t1;

[0060] a1=g×(sinα1-μ1×cosα1);

[0061]

[0062] In the formula, a1 is the acceleration of each stage of material on the first-stage sliding plate 21;

[0063] t1 is the time that materials at each level slide on the first-level slide plate 21;

[0064] g is the acceleration due to gravity;

[0065] α1 is the tilt angle of the first-level skateboard 21;

[0066] μ1 is the coefficient of friction between each level of material and the first-stage sliding plate 21;

[0067] L1 is the length of the first-level skateboard 21;

[0068] V2 = V1 + a2 × t2;

[0069] a2 = μ2 × g;

[0070] In the formula, a2 is the acceleration of each grade of material on the primary conveyor belt 231;

[0071] t2 is the time required for materials of each grade to accelerate to V2 on the primary conveyor belt 231;

[0072] g is the acceleration due to gravity;

[0073] μ2 is the coefficient of friction between each level of material and the primary conveyor belt 231;

[0074] V max =V² + a³ × t⁴;

[0075] a3 = μ3 × g;

[0076] In the formula, a3 is the acceleration of each stage of material on the secondary conveyor belt 241;

[0077] t4 represents the acceleration of materials at all levels on the secondary conveyor belt 241 to V. max The time required;

[0078] g is the acceleration due to gravity;

[0079] μ3 is the coefficient of friction between each level of material and the secondary conveyor belt 241.

[0080] In another embodiment of the multi-stage fabric distribution device 2, such as Figure 3As shown, the primary conveying mechanism 23 is a conveying roller 232, and the secondary conveying mechanism 24 is a secondary conveyor belt 241; the conveying roller 232 includes multiple rollers 233 arranged in sequence, and the speed of the rollers 233 increases along the material conveying direction.

[0081] In this embodiment, both the primary slide plate 21 and the conveying roller 232 are used to accelerate materials at each stage, and the conveying roller 232 gradually accelerates materials at each stage through each roller 233. Specifically, the conveying roller 232 is composed of multiple rollers 233 arranged sequentially. The rollers 233 are rotatably mounted on the frame, and the frame is equipped with a motor or other structure to drive the rollers 233 to rotate. The rotation of each roller 233 is independent of each other, and there is a speed difference between two adjacent rollers 233 that is greater than or equal to 0.05 m / s and less than or equal to 0.07 m / s, thereby gradually widening the spacing between the material blocks and reducing the stacking rate. Preferably, the speed difference between any two adjacent rollers 233 is fixed. Material conveyed by the upstream equipment enters the primary slide plate 21 at an initial speed V0. The material slides on the primary slide plate 21 and accelerates to V1. During this sliding process, the material blocks are separated, resulting in a more uniform distribution of material blocks and reduced overlap. Simultaneously, the primary slide plate 21 upstream of the conveying roller 232 provides a buffer, preventing material from impacting and damaging the roller 233. Material enters the conveying roller 232 from the primary slide plate 21. As the speed of each roller 233 in the conveying roller 232 gradually increases, each roller 233 accelerates the material step by step. During this acceleration, the material blocks are separated, reducing the adhesion and overlap rate. The speed of the roller 233 at the end of the conveying roller 232 is the same as the speed of the secondary conveyor belt 241, both being V. max Under the action of the conveying roller 232, the material is fed from the end of the conveying roller 232 at a speed of V. max The material is discharged and enters the secondary conveyor belt 241 via the secondary slide plate 22. The secondary slide plate 22 is used to control the dispersion range of the material when it is thrown out from the end of the conveyor roller 232, to prevent fine materials from spilling, and to prevent material blocks from entering the secondary conveyor belt 241 by falling, thus preventing the material blocks from rolling over again when entering the secondary conveyor belt 241. Since the speed of the end roller 233 of the conveyor roller 232 is the same as the running speed of the secondary conveyor belt 241, the material will not roll over again after entering the secondary conveyor belt 241, and the stabilization distance is short. After the material stabilizes in the secondary conveyor belt 241, the identification device acquires the image information of the material for subsequent spray separation.

[0082] Optionally, in this embodiment, both the primary conveyor belt 231 and the secondary conveyor belt 241 are composed of a belt, a driving roller, and a driven roller. The belt is sleeved on the driving roller and the driven roller. The motor drives the driving roller to rotate, thereby driving the belt to move. Optionally, several support rollers may be provided between the driving roller and the driven roller.

[0083] Another embodiment of this utility model provides an intelligent dry separation machine for segregated fabric, including the multi-stage fabric device 2 described in any of the above embodiments.

[0084] The intelligent dry separation machine for segregated fabrics provided in this embodiment of the utility model, such as Figure 2 As shown, the upstream equipment is the feeding device 1; the feeding device 1 is used to classify the material according to the particle size and to make the material form a graded arrangement on the multi-stage feeding device 2 along the width direction of the multi-stage feeding device 2.

[0085] In this embodiment, the feeding device 1 can classify the material according to particle size, thereby making the particle size between adjacent blocks on the multi-stage feeding device 2 more uniform and the particle size ratio closer, thus reducing the overlap rate of the material on the belt.

[0086] Material enters feeding device 1, which classifies the material to obtain multiple particle size grades. For example, a wide particle size of 300-50mm can be further subdivided into narrow particle sizes such as 300-150mm, 150-125mm, and 125-50mm. The graded materials obtained by feeding device 1 then enter multi-stage distribution device 2, where each grade of material is sequentially distributed along the width direction of the device. The conveying directions of the multi-stage material distribution device 2 are perpendicular to each other. The materials of each stage form multiple material belts of different particle sizes on the multi-stage material distribution device 2, so that the particle sizes of adjacent blocks of materials on the multi-stage material distribution device 2 are similar. During the process of conveying materials of each stage, the identification device can acquire image information of all materials on the multi-stage material distribution device 2. During the process of the multi-stage material distribution device 2 throwing out materials of each stage from its end, the blowing device 3 can blow and sort the blocks of materials of each stage thrown out, thereby obtaining the final product.

[0087] The intelligent dry separator for segregated fabric provided in this embodiment reduces the particle size ratio of adjacent blocks by feeding device 1 through graded feeding. Under the same feeding conditions, the particle size ratio between adjacent blocks is smaller, reducing or even eliminating the overlapping phenomenon, thereby reducing the overlapping area between blocks and improving the recognition accuracy, blowing precision and processing capacity.

[0088] The intelligent dry separation machine for segregated fabrics provided in this embodiment of the utility model, such as Figure 7 and Figure 8As shown, it also includes a blowing device 3, which is located at the discharge end of the multi-stage material distribution device 2 and is used to blow and sort the material thrown out by the multi-stage material distribution device 2. The blowing device 3 includes a valve box 31 connected to a high-pressure air source. The valve box 31 has a blowing end that points towards the end of the multi-stage material distribution device 2. The blowing end has several valve holes 312 for blowing the material. High-pressure air from the high-pressure air source is ejected through the valve holes 312 to change the original trajectory of the material and thus achieve sorting. The width direction of the blowing end is consistent with the width direction of the multi-stage material distribution device 2. As mentioned above, the intelligent dry separator for material separation achieves graded feeding by classifying raw materials through the feeding device 1. Materials of different particle sizes form multiple material belts on the multi-stage feeding device 2. Therefore, if all valve holes 312 at the blowing end of the valve box 31 are set to the same size, the blowing accuracy for materials with smaller particle sizes will be poor, or the blowing effect for materials with larger particle sizes will be poor, failing to change the original movement trajectory of the material. Therefore, in this embodiment, one way to configure the valve holes 312 is to divide the blowing end of the valve box 31 into multiple blowing areas 311 along the width direction of the multi-stage feeding device 2. The number of blowing areas 311 is the same as the number of stages divided by the feeding device 1. Each blowing area 311 is equipped with multiple valve holes 312, and the size of the valve holes 312 matches the size of the corresponding material. By dividing the material into zones for blowing, the machine adapts to the particle size differences of each stage, improving blowing efficiency and execution accuracy, and enabling the intelligent dry separator for material separation to classify materials with a wider particle size range. In another configuration of the valve orifice 312, the valve orifice 312 at the blowing end is gradually reduced along the width direction of the multi-stage material distribution device 2. In this embodiment, the particle size of the material changes steplessly along the width direction of the multi-stage material distribution device 2. Correspondingly, the size of the valve orifice 312 also changes steplessly along the width direction of the multi-stage material distribution device 2. The particle size change direction of each stage of the material is the same as the size change direction of the valve orifice 312, thereby adapting to the particle size difference of each stage of the material, improving the blowing efficiency and execution accuracy, and realizing the separation of materials by the intelligent dry separator for a wider particle size range.

[0089] The intelligent dry separation machine for segregated fabric provided in this embodiment of the utility model has three implementations of the feeding device 1. In the first implementation of the feeding device 1, as shown in... Figure 4 As shown, the feeding device 1 includes at least one layer of screen 11; the feeding device 1 is provided with discharge ports 111 corresponding to each level of material, and all discharge ports 111 are spaced apart along the width direction of the multi-level material distribution device 2.

[0090] In this embodiment, the feeding device 1 includes a screen frame and a screen 11 disposed within the screen frame. The screen 11 has at least one layer and multiple screen holes, all of which are the same size. When multiple layers of screen 11 are provided, all screens 11 are spaced apart vertically, and the size of the screen frame gradually decreases. The number of stages divided by the feeding device 1 is the number of screens 11 plus one. For example, if the feeding device 1 has one layer of screen 11, the raw material will be processed by the feeding device 1 to obtain two stages of material. The materials are respectively the oversize material and the undersize material of the screen 11; the feeding device 1 is provided with a discharge port 111 corresponding to each level of material, and each discharge port 111 is arranged sequentially along the width direction of the feeding device 1 and is connected to the multi-stage material distribution device 2. Each discharge port 111 is preferably located on the same horizontal plane; each discharge port 111 is connected to the inlet end of the multi-stage material distribution device 2. Under the action of the guide baffle, each level of material is discharged from the corresponding discharge port 111 and enters the multi-stage material distribution device 2.

[0091] In the second embodiment of the feeding device 1, such as Figure 5 As shown, the feeding device 1 includes a screen 11 and a vibrating feeder 13; the screen 11 is located above the vibrating feeder 13, the feeding direction of the vibrating feeder 13 is the same as the conveying direction of the multi-stage fabric distribution device 2, and the size of the screen holes of the screen 11 gradually changes along the width direction of the multi-stage fabric distribution device 2.

[0092] In this embodiment, the feeding device 1 includes a screen frame, a screen 11 disposed within the screen frame, and a vibrating feeder 13. The screen 11 is arranged in a single layer, and the screen frame can vibrate under the drive of a vibration source. The screen 11 has multiple screen holes, and the size of the screen holes gradually increases or decreases along the width direction of the multi-stage feeding device 2. The screen 11 is located above the vibrating feeder 13. Raw materials are fed in from the end of the screen 11 with smaller screen holes, and the material on the screen 11 is discharged from the end of the screen 11 with larger screen holes, ultimately falling entirely onto the vibrating feeder 13 below. That is, the raw material is on the screen 11. The direction of movement is along the width of the multi-stage feeding device 2; after the raw material is classified by the screen 11, the materials of each grade enter the multi-stage feeding device 2 through the vibrating feeder 13. On the vibrating feeder 13, the direction of movement of each grade of material is the same as the direction of movement of the multi-stage feeding device 2, so that after each grade of material enters the multi-stage feeding device 2, multiple material belts of different particle sizes can be formed on the multi-stage feeding device 2; since the screen aperture size of the screen 11 gradually changes along the width of the multi-stage feeding device 2, a stepless particle size distribution can be achieved in this embodiment.

[0093] In the third embodiment of the feeding device 1, such as Figure 6As shown, the feeding device 1 includes a roller screen 12 and a vibrating feeder 13; the roller screen 12 is located above the vibrating feeder 13, and the feeding direction of the vibrating feeder 13 is the same as the conveying direction of the multi-stage material distribution device 2; the roller screen 12 includes multiple rotating rollers 121, all of which are spaced apart along the width direction of the multi-stage material distribution device 2, and the spacing between two adjacent rollers 121 gradually changes along the width direction of the multi-stage material distribution device 2.

[0094] In this embodiment, the feeding device 1 includes a roller screen 12 and a vibrating feeder 13. The roller screen 12 includes a plurality of spaced rollers 121, and the spacing between adjacent rollers 121 gradually increases or decreases along the width direction of the multi-stage feeding device 2. The roller screen 12 is located above the vibrating feeder 13. The raw material is fed from the end of the roller screen 12 with a smaller spacing between adjacent rollers 121, and the material on the roller screen 12 is discharged from the end of the roller screen 12 with a larger spacing between adjacent rollers 121, and finally all of it falls onto the vibrating feeder 13 below. The movement direction on the screen 12 is along the width direction of the multi-stage feeding device 2; after the raw material is classified by the roller screen 12, the materials of each grade are fed into the multi-stage feeding device 2 via the vibrating feeder 13. On the vibrating feeder 13, the movement direction of each grade of material is the same as the movement direction of the multi-stage feeding device 2, so that each grade of material can form multiple material belts of different particle sizes on the multi-stage feeding device 2; since the spacing between two adjacent rollers 121 of the roller screen 12 gradually changes along the width direction of the multi-stage feeding device 2, a stepless particle size distribution can be achieved in this embodiment.

[0095] In this embodiment, the aforementioned intelligent dry separator for separating fabric also includes an identification device, which is electrically connected to the jetting device 3 and is located at the secondary conveying mechanism 24. Specifically, the identification device includes an identification module 41 and a receiving module 42; the identification module 41 is located above the conveying surface of the secondary conveyor belt 241, which is the surface that contacts the material and is used to convey the material; the identification module 41 includes an image recognition system and an X-ray device; the receiving module 42 is an X-ray linear array detector; the receiving module 42 is located within the loop formed by the belt of the secondary fabric belt and is used to cooperate with the X-ray device. When the aforementioned intelligent dry separator can separate clean coal, middlings, and gangue, the image recognition system, X-ray device, and X-ray linear array detector transmit the material classification information and position information of the clean coal, middlings, and gangue on the secondary conveyor belt to the subsequent injection device 3. The injection device 3 selectively injects based on the information from the image recognition system, X-ray device, and X-ray linear array detector to obtain the three products. Conversely, when the aforementioned intelligent dry separator can separate clean coal and gangue, the image recognition system, X-ray device, and X-ray linear array detector transmit the material classification information and position information of the clean coal and gangue on the secondary conveyor belt to the subsequent injection device 3. The injection device 3 selectively injects based on the information from the image recognition system, X-ray device, and X-ray linear array detector to obtain the two products.

[0096] The intelligent dry separator for separating fabric provided in this embodiment also includes a housing 5. The feeding device 1, the multi-stage fabric distribution device 2, the blowing device 3, and the identification device are all located inside the housing 5. The housing 5 is located at the connection between the feeding device 1 and the conveying device, and has an interface for communicating with a dust collector at the blowing device 3 for dust removal during operation.

[0097] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0098] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0099] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage fabric distribution device, characterized in that, include: Primary conveyor (23), secondary conveyor (24), primary slide plate (21) and secondary slide plate (22); The primary conveying mechanism (23) and the secondary conveying mechanism (24) are arranged in a stepped manner. The primary slide plate (21) and the secondary slide plate (22) are both inclined. The primary slide plate (21) connects the primary conveying mechanism (23) and the upstream equipment, and the secondary slide plate (22) connects the primary conveying mechanism (23) and the secondary conveying mechanism (24). The material conveyed by the upstream equipment is accelerated sequentially by the primary slide plate (21) and the primary conveying mechanism (23) and then passes over the secondary slide plate (22) into the secondary conveying mechanism (24).

2. The multi-stage fabric distribution device according to claim 1, characterized in that, The tilt angle α2 of the secondary slide (22) is less than or equal to 20°.

3. The multi-stage fabric distribution device according to claim 2, characterized in that, The length L2 of the secondary slide plate (22) should satisfy: In the formula, g is the acceleration due to gravity; V2 is the speed at which the material is discharged from the primary conveying mechanism (23).

4. The multi-stage fabric distribution device according to any one of claims 1 to 3, characterized in that, The primary conveying mechanism (23) is a primary conveyor belt (231), and the secondary conveying mechanism (24) is a secondary conveyor belt (241).

5. The multi-stage fabric distribution device according to claim 4, characterized in that, The operating speed of the secondary conveyor belt (241) is greater than that of the primary conveyor belt (231).

6. The multi-stage fabric distribution device according to any one of claims 1 to 3, characterized in that, The primary conveying mechanism (23) is a material conveying roller (232), and the secondary conveying mechanism (24) is a secondary conveyor belt (241); The conveying roller (232) includes a plurality of rollers (233) arranged in sequence, and the speed of the rollers (233) increases along the material conveying direction.

7. The multi-stage fabric distribution device according to claim 6, characterized in that, The speed difference between two adjacent rollers (233) ranges from 0.05 to 0.07 m / s.

8. The multi-stage fabric distribution device according to claim 6, characterized in that, The speed of the roller (233) at the end of the conveying roller (232) is the same as the speed of the secondary conveyor belt (241).

9. A smart dry separation machine for segregated fabrics, characterized in that, Includes the multi-stage fabric application device (2) as described in any one of claims 1 to 8.

10. The intelligent dry separation machine for segregated fabric according to claim 9, characterized in that, The upstream equipment is a feeding device (1); the feeding device (1) is used to classify the material according to particle size and to make the material form a graded arrangement on the multi-level feeding device (2) along the width direction of the multi-level feeding device (2).

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