Coal conveying and screening device

Abstract

The utility model provides a coal conveying and screening device. The coal conveying and screening device comprises a conveying assembly; a sorting assembly; a conveyor belt assembly; the baffle assemblies are located on the two sides of the conveying belt assembly; the coal chute assembly and the gangue chute assembly are the same in structure, each of the coal chute assembly and the gangue chute assembly comprises a chute box and an opening and closing assembly adjustably arranged on the chute box, the interior of the chute box is arranged in a through mode, a material inlet is formed in the upper portion of the chute box, and a material outlet is formed in the lower portion of the chute box; the opening and closing assembly is arranged at the material outlet and used for opening and closing the material outlet. The sorting assembly is obliquely arranged so that materials can slide along the inclined face. According to the utility model, reliable stopping of materials on the conveying belt assembly is realized, so that the problem of material splashing in the conveying process of coal materials is avoided; the chute box and the opening and closing assembly are arranged to work in a matched mode, storage of materials is achieved, and flexible control over the discharging time of the materials is achieved by adjusting the opening and closing assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of coal transportation and screening equipment, and particularly relates to a coal conveying and screening device. Background Art

[0002] A grading chute for coal gangue conveying and screening is a device used for grading and conveying coal gangue (materials generated during coal mining) during the coal processing process.

[0003] The materials obtained from coal mining are separated into coal and gangue after vibration separation. However, in the prior art, there is a lack of an effective control mechanism during the process of the separated coal and gangue discharging along their respective chutes, that is, the existing grading chute lacks a structure for efficiently controlling the opening and closing of the coal chute and the gangue chute respectively, resulting in the inability to accurately control the discharging timing of the materials, reducing the flexibility of the material processing process, making it difficult for the staff to adjust the transportation conditions of different materials according to the actual production situation and production needs, and thus reducing the execution efficiency of the entire coal mine production process; in addition, for the existing grading chute for coal gangue conveying and screening, due to the lack of an effective restraint structure, the materials are likely to splash out of the chute during transportation, which not only causes transportation losses of the materials, but also easily leads to safety accidents such as the materials splashing and injuring people, and is not conducive to the efficient and safe production of the coal mine. Summary of the Utility Model

[0004] The utility model provides a coal conveying and screening device to solve the problems that the existing grading chute is prone to material splashing during the transportation of coal materials and cannot accurately control the discharging timing of the materials.

[0005] In order to solve the above problems, according to one aspect of the utility model, a coal conveying and screening device is provided, comprising: a conveying component, the conveying component having a transport outlet; a sorting component, used to screen the material into coal and gangue; a conveying belt component, which is arranged for circular operation, and the two ends of which cooperate with the transport outlet and the sorting component respectively to transport the material removed from the transport outlet to the sorting component; a baffle component, which is detachably arranged on the conveying component and is located on both sides of the conveying belt component; the baffle component extends along the transport direction of the conveying belt component to stop the material on the conveying belt component; a coal chute component and a gangue chute component, the coal chute component and the gangue chute component The structures are the same, both of which include a chute box and an opening and closing assembly adjustably arranged on the chute box. The interior of the chute box is through-set, and has a material inlet at the top and a material outlet at the bottom; the opening and closing assembly is arranged at the material outlet, and is used to open and close the material outlet; wherein the sorting assembly is inclined so that the material slides along the inclined surface; the coal chute assembly is arranged below the inclined surface, and the coal screened out by the sorting assembly enters the coal chute assembly from the material inlet of the coal chute assembly; the gangue chute assembly is arranged at one end of the inclined surface away from the conveying belt assembly, and the material not screened out by the sorting assembly is gangue, and the gangue enters the gangue chute assembly from the material inlet of the gangue chute assembly along the inclined surface.

[0006] Furthermore, the opening and closing assembly includes a handle, a telescopic rod, a rotating plate and a positioning column, one end of the telescopic rod is rotatably arranged in the chute box, and the other end extends out of the chute box and is rotatably arranged on the chute box; the length of the telescopic rod is telescopic; the extended end of the telescopic rod is connected to the handle; the rotating plate is fixedly arranged on the telescopic rod to rotate with the telescopic rod; the rotating plate is located in the chute box; the positioning column is arranged on the handle; wherein, a first positioning hole is provided on the outer wall of the chute box near the handle; the opening and closing assembly has a closed state and an open state, in the closed state, at least a portion of the positioning column is inserted into the first positioning hole, and is limitedly matched with the first positioning hole to fix the handle, the telescopic rod and the rotating plate relative to the chute box, and the rotating plate blocks the material outlet to close the material outlet.

[0007] Furthermore, a second positioning hole is provided on the outer wall of the chute box near the handle; in the open state, at least a portion of the positioning column is inserted into the second positioning hole and cooperates with the second positioning hole to fix the handle, the telescopic rod, and the rotating plate relative to the chute box, and the rotating plate avoids the material outlet to open the material outlet; by pulling the handle along the axial direction of the telescopic rod, the telescopic rod becomes longer, and the positioning column is controlled to disengage from the first positioning hole or the second positioning hole; by rotating the handle, the telescopic rod and the rotating plate are driven to rotate to switch between the closed state and the open state; by pushing the handle along the axial direction of the telescopic rod, the telescopic rod becomes shorter, and at least a portion of the positioning column is controlled to extend into the first positioning hole or the second positioning hole.

[0008] Further, there are two positioning posts, which are spaced on the handle and symmetrically arranged with respect to the central axis of the telescopic rod; there are two first positioning holes and two second positioning holes respectively. The two first positioning holes are symmetrically arranged with respect to the central axis of the telescopic rod, and the central connection line of the two first positioning holes is horizontally arranged. The two second positioning holes are symmetrically arranged with respect to the central axis of the telescopic rod, and the central connection line of the two second positioning holes is vertically arranged; the positioning posts are made of elastic materials; the chute box is of a funnel structure.

[0009] Further, the baffle assembly includes a first baffle and a second baffle. The first baffle and the second baffle have the same structure and both include a plate body and metal posts arranged on the plate body. There are two bearing holes on the outer wall of the conveying assembly, and the two bearing holes cooperate with the first baffle and the second baffle respectively; there are magnets on the inner walls of the bearing holes; when the baffle assembly is fixed on the conveying assembly, at least a part of the metal post extends into the bearing hole and is in limit cooperation with the inner wall of the bearing hole; the magnet adsorbs the metal post to fix the metal post; wherein, the metal post is made of magnetic materials; the plate body is made of wear-resistant materials; and / or, the plate body is made of transparent materials.

[0010] Further, the sorting assembly includes a vibration generator and an inclined sorting sieve plate. The sorting sieve plate is drivingly connected to the vibration generator, and the vibration generator is used to drive the sorting sieve plate to vibrate at a set frequency and / or a set amplitude; the connection end of the sorting sieve plate and the vibration generator cooperates with the transportation belt assembly to receive the materials transported from the transportation belt assembly, and the other end of the sorting sieve plate cooperates with the material inlet of the gangue chute assembly; there are a plurality of spaced sieve-through slots on the sorting sieve plate, and the upper surface of the sorting sieve plate is an inclined surface, and the sieve-through slots penetrate the inclined surface; wherein, the coal chute assembly is arranged below the sorting sieve plate, and the coal enters the coal chute assembly through the sieve-through slots under the action of gravity from the material inlet of the coal chute assembly; the materials not sifted through by the sorting sieve plate are gangues, and the gangues enter the gangue chute assembly along the inclined surface.

[0011] Further, the width of the sieve-through slot is greater than the maximum particle size of the coal and less than the minimum particle size of the gangue, so that the coal can pass through the sieve-through slot and the gangue cannot pass through the sieve-through slot; the extending direction of the sieve-through slot is parallel to the extending direction of the inclined surface to guide the gangue to move along the inclined surface.

[0012] Further, the coal conveying and screening device further includes an ore identifier, which is arranged on the transportation belt assembly and is electrically connected to the vibration generator; the ore identifier adjusts the frequency and / or amplitude of the vibration generator driving the sorting sieve plate by identifying the type and / or size of the materials on the transportation belt assembly.

[0013] Further, the conveying assembly includes: a feed hopper and a vibrating feeder. The feed hopper is in communication with the inlet of the vibrating feeder and is used to transport external materials into the vibrating feeder; the vibrating feeder is used to vibrate the materials and evenly transport the materials onto the conveyor belt assembly; the outlet of the vibrating feeder is the conveying outlet.

[0014] Further, the conveying assembly further includes a fine coal hopper. The fine coal hopper is arranged below the feed hopper and is internally communicated with the feed hopper; wherein, a metal filter screen is obliquely arranged in the feed hopper, and small particle materials pass through the metal filter screen and fall into the fine coal hopper, while large particle materials enter the inlet of the vibrating feeder along the metal filter screen.

[0015] Applying the technical solution of the present utility model, the present utility model provides a coal conveying and screening device, including: a conveying assembly having a conveying outlet; a sorting assembly for screening materials into coal and gangue; a conveyor belt assembly that is circularly operated and whose two ends are respectively matched with the conveying outlet and the sorting assembly to transport the materials removed from the conveying outlet onto the sorting assembly; a baffle assembly detachably arranged on the conveying assembly and located on both sides of the conveyor belt assembly; the baffle assembly extends along the conveying direction of the conveyor belt assembly to stop the materials on the conveyor belt assembly; a coal chute assembly and a gangue chute assembly. The coal chute assembly and the gangue chute assembly have the same structure and both include a chute box and an opening and closing assembly adjustably arranged on the chute box. The interior of the chute box is through, and there is a material inlet above and a material outlet below; the opening and closing assembly is arranged at the material outlet and is used to open and close the material outlet; wherein, the sorting assembly is obliquely arranged so that the materials slide along the inclined surface; the coal chute assembly is arranged below the inclined surface, and the coal screened out by the sorting assembly enters the coal chute assembly from the material inlet of the coal chute assembly; the gangue chute assembly is arranged at one end of the inclined surface away from the conveyor belt assembly. The materials not screened out by the sorting assembly are gangue, and the gangue enters the gangue chute assembly from the material inlet of the gangue chute assembly along the inclined surface.

[0016] The utility model realizes reliable stopping of the materials on the conveying belt assembly by arranging the baffle assembly to extend along the conveying direction of the conveying belt assembly, thereby avoiding the problem of material splashing during the transportation of coal materials. This not only avoids the transportation loss of materials but also prevents safety accidents such as material splashing from injuring people, which is conducive to the efficient and safe production of coal mines. By arranging the chute box and the opening and closing assembly to cooperate, it not only realizes the storage of materials but also flexibly controls the feeding timing of materials by adjusting the opening and closing assembly, improving the flexibility of the material handling process. This enables the staff to adjust the conveying conditions of different materials according to the actual production situation and production needs, thereby improving the execution efficiency of the entire coal mine production process. By arranging the conveying assembly, sorting assembly, conveying belt assembly, coal chute assembly, and gangue chute assembly to cooperate, it realizes the pipeline production process of material transportation, screening, and separate storage, with high production efficiency. The utility model has a simple structure and low cost, is convenient for assembly and subsequent maintenance, and is suitable for large-scale popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments and descriptions thereof of the utility model are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0018] Figure 1 The external structural schematic diagram of the coal conveying and screening device provided by the embodiment of the utility model is shown;

[0019] Figure 2 Shown is Figure 1 The partial enlarged schematic diagram at A in

[0020] Figure 3 The external structural schematic diagram of the coal conveying and screening device provided by the embodiment of the utility model from the bottom view angle is shown;

[0021] Figure 4 Shown is Figure 3 The partial enlarged schematic diagram at B in

[0022] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0023] 10, conveying assembly; 11, transportation outlet; 12, bearing hole; 13, magnet; 14, feeding funnel; 15, vibrating cloth feeder; 16, fine coal funnel;

[0024] 20, sorting assembly; 21, sorting screen plate; 211, screening through groove;

[0025] 30, conveying belt assembly;

[0026] 40. Baffle assembly; 41. Plate body; 42. Metal column;

[0027] 50. Coal chute assembly;

[0028] 60. Gangue chute assembly;

[0029] 70. Chute box; 71. Material inlet; 72. Material outlet;

[0030] 80. Opening and closing assembly; 81. Handle; 82. Telescopic rod; 83. Rotating plate; 84. Positioning column;

[0031] 90. Ore identifier. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] Such as Figures 1 to 4As shown in the figure, an embodiment of the present utility model provides a coal conveying and screening device, including: a conveying assembly 10, which has a transportation outlet 11; a sorting assembly 20, used for screening materials into coal and gangue; a transportation belt assembly 30, which is set to operate cyclically, and both ends are respectively matched with the transportation outlet 11 and the sorting assembly 20 to transport the materials removed from the transportation outlet 11 to the sorting assembly 20; a baffle assembly 40, which is detachably arranged on the conveying assembly 10 and is located on both sides of the transportation belt assembly 30; the baffle assembly 40 extends along the transportation direction of the transportation belt assembly 30 to stop the materials on the transportation belt assembly 30; a coal chute assembly 50 and a gangue chute assembly 60, the coal chute assembly 50 and the gangue chute assembly 60 have the same structure, and both include a chute box 70 and an opening and closing assembly 80 adjustably arranged on the chute box 70. The inside of the chute box 70 is penetrated, and there is a material inlet 71 above and a material outlet 72 below; the opening and closing assembly 80 is arranged at the material outlet 72 for opening and closing the material outlet 72; wherein, the sorting assembly 20 is inclined so that the materials slide along the inclined surface; the coal chute assembly 50 is arranged below the inclined surface, and the coal screened out by the sorting assembly 20 enters the coal chute assembly 50 from the material inlet 71 of the coal chute assembly 50; the gangue chute assembly 60 is arranged at one end of the inclined surface away from the transportation belt assembly 30. The materials not screened out by the sorting assembly 20 are gangue, and the gangue enters the gangue chute assembly 60 from the material inlet 71 of the gangue chute assembly 60 along the inclined surface.

[0034] In the present utility model, by arranging the baffle assembly 40 to extend along the transportation direction of the transportation belt assembly 30, reliable stopping of the materials on the transportation belt assembly 30 is achieved, thereby avoiding the problem of material splashing during the transportation of coal materials. Thus, both the transportation loss of materials and the occurrence of safety accidents such as material splashing and injuring people are avoided, which is beneficial to the efficient and safe production of coal mines; by arranging the chute box 70 and the opening and closing assembly 80 to cooperate, both the storage of materials is realized, and the flexible control of the material discharging timing is achieved by adjusting the opening and closing assembly 80, improving the flexibility of the material handling process, enabling the staff to adjust the conveying conditions of different materials according to the actual production situation and production needs, and thus improving the execution efficiency of the entire coal mine production process; by arranging the conveying assembly 10, the sorting assembly 20, the transportation belt assembly 30, the coal chute assembly 50 and the gangue chute assembly 60 to cooperate, a pipeline-type production process for material transportation, screening and separate storage is realized, with high production efficiency; the structure of the present utility model is simple and the cost is low, which is convenient for assembly and subsequent maintenance, and is suitable for large-scale popularization and use.

[0035] In a specific embodiment of the present utility model, the transportation belt assembly 30 adopts an existing belt conveyor.

[0036] Such asFigure 1 , Figure 3 and Figure 4 As shown in Figure 3 and Figure 4 , the opening and closing assembly 80 includes a handle 81, a telescopic rod 82, a rotating plate 83, and a positioning post 84. One end of the telescopic rod 82 is rotatably arranged in the chute box 70, and the other end extends out of the chute box 70 and is rotatably arranged on the chute box 70. The length of the telescopic rod 82 is adjustable. The extending end of the telescopic rod 82 is connected to the handle 81. The rotating plate 83 is fixedly arranged on the telescopic rod 82 to rotate with the telescopic rod 82. The rotating plate 83 is located inside the chute box 70. The positioning post 84 is arranged on the handle 81. Among them, there is a first positioning hole on the outer wall of the chute box 70 near the handle 81. The opening and closing assembly 80 has a closed state and an open state. In the closed state, at least a part of the positioning post 84 is inserted into the first positioning hole and is in limit fit with the first positioning hole to fix the handle 81, the telescopic rod 82, and the rotating plate 83 relative to the chute box 70. The rotating plate 83 blocks the material outlet 72 to close the material outlet 72.

[0037] By setting the specific structure of the opening and closing assembly 80, not only the working reliability of the opening and closing assembly 80 is ensured, but also the structure of the opening and closing assembly 80 tends to be simplified, which is convenient for installation and manual operation.

[0038] In addition, by setting the specific structure of the opening and closing assembly 80 in the present utility model, the staff can control the feeding timing of the coal chute assembly 50 and the gangue chute assembly 60 through simple pushing, pulling, and rotating operations, improving the flexibility of the material handling process, allowing the staff to flexibly adjust according to the processing requirements and actual situations, thereby optimizing the production process.

[0039] As Figure 1 and Figure 4 shown, there is also a second positioning hole on the outer wall of the chute box 70 near the handle 81. In the open state, at least a part of the positioning post 84 is inserted into the second positioning hole and is in limit fit with the second positioning hole to fix the handle 81, the telescopic rod 82, and the rotating plate 83 relative to the chute box 70. The rotating plate 83 avoids the material outlet 72 to open the material outlet 72. By pulling the handle 81 along the axial direction of the telescopic rod 82, the telescopic rod 82 becomes longer, controlling the positioning post 84 to disengage from the first positioning hole or the second positioning hole. By rotating the handle 81, the telescopic rod 82 and the rotating plate 83 are driven to rotate to switch between the closed state and the open state. By pushing the handle 81 along the axial direction of the telescopic rod 82, the telescopic rod 82 becomes shorter, controlling at least a part of the positioning post 84 to extend into the first positioning hole or the second positioning hole.

[0040] By setting the first positioning hole and the second positioning hole, the closed state and the open state can be reliably maintained, thereby realizing the flexible control of the feeding timing of the coal chute assembly 50 and the gangue chute assembly 60.

[0041] As Figure 1 and Figure 4 shown, there are two positioning posts 84, which are spaced apart on the handle 81 and symmetrically arranged with respect to the central axis of the telescopic rod 82; there are two first positioning holes and two second positioning holes respectively. The two first positioning holes are symmetrically arranged with respect to the central axis of the telescopic rod 82, and the central connection line of the two first positioning holes is horizontally arranged. The two second positioning holes are symmetrically arranged with respect to the central axis of the telescopic rod 82, and the central connection line of the two second positioning holes is vertically arranged; the positioning posts 84 are made of elastic materials; the chute box 70 is of a funnel structure.

[0042] By setting the central connection line of the two first positioning holes to be horizontally arranged, the rotating plate 83 can be driven to be in a horizontal state at this time, so that the rotating plate 83 completely blocks the material outlet 72 at this time, realizing the reliable closing of the material outlet 72; by setting the central connection line of the two second positioning holes to be vertically arranged, the rotating plate 83 can be driven to be in a vertical state at this time, so that the rotating plate 83 can avoid the material outlet 72 as much as possible, realizing the reliable opening of the material outlet 72.

[0043] Optionally, in another embodiment not shown in the present utility model, rotating rods penetrate through the surfaces of the coal chute assembly 50 and the gangue chute assembly 60, and the rotating rods are rotatably connected to both the coal chute assembly 50 and the gangue chute assembly 60. A bearing fit or hinge connection method can be used to achieve smooth rotation; a rotating plate 83 is fixedly installed on the outer peripheral surface of the rotating rod. The installation method of the rotating plate 83 can be welding or bolt fixation to ensure the stability of the rotating plate 83 during rotation; one end of the rotating rod is fixedly installed with a handle 81. The operation of the handle 81 can increase the lever effect of the operation through gear transmission or chain drive (for example: a labor-saving lever structure), making it easier for the staff to control; friction posts are fixedly installed on the surface of the handle 81. The friction posts are symmetrically distributed on the surface of the handle 81. The material of the friction posts is natural rubber. This material selection provides good anti-slip performance. The friction posts are in contact with the surface of the coal chute assembly 50 or the gangue chute assembly 60, which can increase the surface friction between the friction posts and the surface of the coal chute assembly 50 or the gangue chute assembly 60, thereby limiting the position of the rotating plate 83. Through the provided rotating plate 83, the staff only needs to rotate the rotating rod through the handle 81, and the rotating rod can then drive the rotating plate 83 to rotate until the rotating plate 83 is horizontally located in the coal chute assembly 50 or the gangue chute assembly 60. At this time, the rotating plate 83 completely blocks the feeding of the coal chute assembly 50 and the gangue chute assembly 60; that is, in this embodiment, there is no need to use the positioning post 84 structure, nor to set the first positioning hole and the second positioning hole. Friction posts are set at the original position of the positioning post 84, and the rotation plate 83 is fixed by relying on the friction between the friction posts and the outer surface of the coal chute assembly 50 or the gangue chute assembly 60 to maintain the closed state and the open state.

[0044] As Figure 1 and Figure 2 shown, the baffle assembly 40 includes a first baffle and a second baffle. The first baffle and the second baffle have the same structure, and both include a plate body 41 and metal posts 42 provided on the plate body 41. There are two bearing holes 12 on the outer wall of the conveying assembly 10, and the two bearing holes 12 are respectively matched with the first baffle and the second baffle; there are magnets 13 on the inner wall of the bearing holes 12; when the baffle assembly 40 is fixed on the conveying assembly 10, at least a part of the metal post 42 extends into the bearing hole 12 and is in limit fit with the inner wall of the bearing hole 12; the magnet 13 adsorbs the metal post 42 to fix the metal post 42; wherein, the metal post 42 is made of a magnetic material; the plate body 41 is made of a wear-resistant material; and / or, the plate body 41 is made of a transparent material.

[0045] By setting that the baffle assembly 40 includes a first baffle and a second baffle, reliable prevention of material splashing is achieved, and material loss during material transfer is reduced; by setting the specific structures of the first baffle and the second baffle, it is not only convenient for the quick disassembly and assembly of the first baffle and the second baffle on the conveying assembly 10, but also makes the structures of the first baffle and the second baffle tend to be simplified, facilitating subsequent unified maintenance; by setting that the plate body 41 is made of a transparent material, it is convenient for the staff to observe the material transportation situation through the plate body 41.

[0046] In addition, it should be noted that: in the present utility model, by setting the plate body 41, it effectively prevents the coal gangue from falling from both sides of the belt during transportation, directly improving the stability and reliability of the transportation process; when the plate body 41 is not needed or needs to be cleaned and maintained, the staff can easily pull the plate body 41 outwards and remove it, simplifying the maintenance process and reducing the production delay time caused by shutdown maintenance, thereby improving work efficiency.

[0047] In a specific embodiment of the present utility model, the material of the metal post 42 is ferritic stainless steel; the material of the plate body 41 is PP plastic to improve the service life of the plate body 41.

[0048] As Figure 1As shown, the sorting assembly 20 includes a vibration generator and a sorting screen plate 21 arranged obliquely. The sorting screen plate 21 is drivingly connected to the vibration generator, and the vibration generator is used to drive the sorting screen plate 21 to vibrate at a set frequency and / or a set amplitude; the connection end of the sorting screen plate 21 and the vibration generator cooperates with the conveyor belt assembly 30 to receive the materials transported from the conveyor belt assembly 30. The other end of the sorting screen plate 21 cooperates with the material inlet 71 of the gangue chute assembly 60; there are a plurality of spaced sieve-through grooves 211 on the sorting screen plate 21, and the upper surface of the sorting screen plate 21 is an inclined surface, and the sieve-through grooves 211 penetrate the inclined surface; wherein, the coal chute assembly 50 is arranged below the sorting screen plate 21, and the coal enters the coal chute assembly 50 through the sieve-through grooves 211 under the action of gravity from the material inlet 71 of the coal chute assembly 50; the materials not sifted by the sorting screen plate 21 are gangue, and the gangue enters the gangue chute assembly 60 along the inclined surface.

[0049] With such a setting, both the working reliability of the sorting assembly 20 is ensured, and the structure of the sorting assembly 20 tends to be simplified.

[0050] Specifically, the width of the sieve-through groove 211 is greater than the maximum particle size of the coal and less than the minimum particle size of the gangue, so that the coal can pass through the sieve-through groove 211 and the gangue cannot pass through the sieve-through groove 211; the extending direction of the sieve-through groove 211 is parallel to the extending direction of the inclined surface to guide the gangue to move along the inclined surface.

[0051] By setting the extending direction of the sieve-through groove 211 to be parallel to the extending direction of the inclined surface, it is not only convenient for screening coal, but also realizes the reliable guidance of the unsifted gangue, thereby ensuring that the gangue can quickly enter the gangue chute assembly 60 along the inclined surface.

[0052] Of course, it should be noted that for the setting of the width of the screening through-channel 211, it is not necessary to accurately know the maximum particle size of coal and the minimum particle size of gangue. In actual processing, based on practical experience, statistical data of the average particle size of coal and statistical data of the average particle size of gangue, the maximum particle size of common coal and the minimum particle size of common gangue can be analyzed manually, and then the width of the screening through-channel 211 can be designed. Moreover, there are some screening preferences in production. If one wants to screen and collect coal as much as possible, the width of the screening through-channel 211 can be designed larger, but this will also cause some small-particle-size gangue to fall into the coal chute assembly 50, resulting in gangue being mixed into the coal, reducing the overall purity of the coal, and subsequent separation of gangue from coal may be required. Of course, this also avoids waste of small-particle-size coal. If one wants to ensure the purity of the screened and collected coal as much as possible, the width of the screening through-channel 211 can be designed smaller to prevent some small-particle-size gangue from falling into the coal chute assembly 50, but this will also cause waste of some small-particle-size coal (some small-particle-size coal cannot pass through the screening through-channel 211 and is treated as gangue, resulting in waste). Therefore, the width of the screening through-channel 211 can be determined by comprehensively considering the screening preferences in production, the maximum particle size of coal, and the minimum particle size of gangue.

[0053] As Figure 1 shown, the coal conveying and screening device further includes an ore identifier 90. The ore identifier 90 is arranged on the conveyor belt assembly 30 and is electrically connected to the vibration generator. The ore identifier 90 adjusts the frequency and / or amplitude of the vibration generator driving the sorting screen plate 21 according to the type and / or size of the material on the conveyor belt assembly 30.

[0054] By setting the ore identifier 90, reliable identification of the type and / or size of the material on the conveyor belt assembly 30 is achieved, thereby ensuring flexible adjustment of the frequency and / or amplitude of the vibration generator driving the sorting screen plate 21, and further improving the screening effect.

[0055] As Figure 1 shown, the conveying assembly 10 includes: a feed hopper 14 and a vibrating feeder 15. The feed hopper 14 is in communication with the inlet of the vibrating feeder 15 for transporting external materials into the vibrating feeder 15. The vibrating feeder 15 is used to vibrate the materials and uniformly transport the materials onto the conveyor belt assembly 30. The outlet of the vibrating feeder 15 is the transport outlet 11.

[0056] By setting the vibrating feeder 15, it is ensured that the materials are evenly distributed on the conveyor belt assembly 30, thereby ensuring the transport efficiency.

[0057] As Figure 1 and Figure 3As shown, the conveying assembly 10 further includes a fine coal hopper 16. The fine coal hopper 16 is disposed below the feed hopper 14 and is internally communicated with the feed hopper 14. Among them, a metal filter screen is inclined in the feed hopper 14. Small particle materials pass through the metal filter screen and fall into the fine coal hopper 16, and large particle materials enter the inlet of the vibrating feeder 15 along the metal filter screen.

[0058] By arranging the cooperation of the fine coal hopper 16 and the inclined metal filter screen, the preliminary screening and collection of small particle coal are realized.

[0059] Optionally, in another embodiment not shown in the present utility model, a sorting assembly 20 is installed at the tops of the coal chute assembly 50 and the gangue chute assembly 60. The sorting assembly 20 can achieve the effective separation of coal blocks and gangue through the action of vibration or the force of other mechanical structures, such as the cooperation of slide rails or the support of rotary bearings. The ore identifier 90 uses optoelectronic detection or gravity sensing technology to identify coal blocks and gangue to ensure the accuracy of material sorting. A vibrating feeder 15 is installed above the conveyor belt assembly 30. The vibrating feeder 15 generates vibration through an eccentric wheel or electromagnetic vibration to achieve uniform material supply. The feed hopper 14 is communicated above the vibrating feeder 15. The feed hopper 14 is made of metal to withstand continuous material impact. The bottom surface of the vibrating feeder 15 is communicated with the fine coal hopper 16. Coal gangue enters through the feed hopper 14, and then the coal gangue is discharged onto the conveyor belt assembly 30 through the vibrating feeder 15, and the fine coal in the coal gangue can fall out through the fine coal hopper 16.

[0060] Now, the specific working process of an embodiment of the present utility model in actual application is described in detail as follows:

[0061] The gangue (i.e., the material) enters through the feeding hopper 14, and then the vibrating feeder 15 transports the gangue onto the conveyor belt assembly 30. The fine coal in the gangue can fall out through the fine coal hopper 16. The coal and gangue are identified by the ore identifier 90, and the coal and gangue are vibrated and sorted by the sorting assembly 20. The coal falls into the coal chute assembly 50 under the action of gravity for storage, while the gangue falls into the gangue chute assembly 60 along the inclined surface for storage; the staff pulls the handle 81 and then rotates the telescopic rod 82, so that the telescopic rod 82 can drive the rotating plate 83 to rotate. When the rotating plate 83 is horizontally located in the coal chute assembly 50 or the gangue chute assembly 60, at this time the rotating plate 83 completely blocks the discharging of the coal chute assembly 50 and the gangue chute assembly 60; when discharging is required, the staff pulls the handle again, and rotates the handle 81 again until the rotating plate 83 is rotated to the vertical angle, and then normal discharging can be carried out; in this way, the staff can freely control the discharging timing of the coal chute assembly 50 and the gangue chute assembly 60; the utility model enables the staff to control the discharging timing of the coal chute assembly 50 and the gangue chute assembly 60 through simple operations. This precise control improves the flexibility of the material handling process, allowing the staff to flexibly adjust according to the processing requirements and actual situations, thereby optimizing the production process; by setting the plate body 41, during the process of transporting the gangue through the conveyor belt assembly 30, it is possible to prevent the gangue from falling from both sides of the conveyor belt assembly 30, which can improve the reliability during transportation; when the plate body 41 is not in use, the staff only needs to pull the plate body 41 outwards to drive the metal column 42 away from the bearing hole 12, and then the plate body 41 can be removed; when the plate body 41 needs to be installed, the staff only needs to align the metal column 42 with the bearing hole 12 and insert it. After the metal column 42 abuts against the magnet 13, the magnet 13 attracts the metal column 42 made of ferritic stainless steel, and then the plate body 41 can be fixed; through the setting of the plate body 41 in the utility model, it effectively prevents the gangue from falling from both sides of the belt during transportation, which directly increases the stability and reliability of the transportation process; and, when the plate body 41 is not in use or needs to be cleaned and maintained, the staff can easily pull the plate body 41 outwards and remove it, simplifying the maintenance process and reducing the production delay time caused by shutdown maintenance, thereby improving the work efficiency.

[0062] In summary, the present utility model provides a coal conveying and screening device. By arranging the baffle assembly 40 to extend along the conveying direction of the conveying belt assembly 30, reliable stopping of the materials on the conveying belt assembly 30 is achieved, thereby avoiding the problem of material splashing during the transportation of coal materials. This not only avoids the loss of material transportation but also prevents safety accidents such as material splashing and injuring people, which is conducive to the efficient and safe production of coal mines. By arranging the chute box 70 and the opening and closing assembly 80 to cooperate, both the collection of materials and the flexible control of the material discharging timing are realized by adjusting the opening and closing assembly 80, improving the flexibility of the material handling process. This enables the staff to adjust the conveying conditions of different materials according to the actual production situation and production needs, thereby improving the execution efficiency of the entire coal mine production process. By arranging the conveying assembly 10, the sorting assembly 20, the conveying belt assembly 30, the coal chute assembly 50, and the gangue chute assembly 60 to cooperate, a pipeline-style production process of material conveying, screening, and separate collection is achieved, with high production efficiency. The structure of the present utility model is simple and the cost is low, which is convenient for assembly and subsequent maintenance, and is suitable for large-scale popularization and use.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0064] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0065] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0066] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the drawings for the device. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0067] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0068] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A coal conveying and screening device, characterized in that, Comprising: A conveying assembly (10), the conveying assembly (10) having a transportation outlet (11); A sorting assembly (20) for screening materials into coal and gangue; A conveyor belt assembly (30) which is arranged to operate in a cycle, and both ends of which are respectively in cooperation with the transportation outlet (11) and the sorting assembly (20) to transport the materials removed from the transportation outlet (11) onto the sorting assembly (20); A baffle assembly (40) which is detachably arranged on the conveying assembly (10) and is located on both sides of the conveyor belt assembly (30); the baffle assembly (40) extends along the transportation direction of the conveyor belt assembly (30) to stop the materials on the conveyor belt assembly (30); A coal chute assembly (50) and a gangue chute assembly (60), the coal chute assembly (50) and the gangue chute assembly (60) having the same structure, both including a chute box (70) and an opening and closing assembly (80) adjustably arranged on the chute box (70), the inside of the chute box (70) is through, and there is a material inlet (71) above and a material outlet (72) below; the opening and closing assembly (80) is arranged at the material outlet (72) for opening and closing the material outlet (72); Wherein, the sorting assembly (20) is inclined so that the materials slide along the inclined surface; the coal chute assembly (50) is arranged below the inclined surface, and the coal screened out by the sorting assembly (20) enters the coal chute assembly (50) from the material inlet (71) of the coal chute assembly (50); the gangue chute assembly (60) is arranged at one end of the inclined surface away from the conveyor belt assembly (30), and the materials not screened out by the sorting assembly (20) are gangue, and the gangue enters the gangue chute assembly (60) from the material inlet (71) of the gangue chute assembly (60) along the inclined surface.

2. The coal conveying and screening device according to claim 1, characterized in that, The opening and closing assembly (80) includes a handle (81), a telescopic rod (82), a rotating plate (83) and a positioning column (84), one end of the telescopic rod (82) is rotatably arranged in the chute box (70), the other end extends out of the chute box (70) and is rotatably arranged on the chute box (70); the length of the telescopic rod (82) is adjustable; The extending end of the telescopic rod (82) is connected to the handle (81); the rotating plate (83) is fixedly arranged on the telescopic rod (82) to rotate along with the telescopic rod (82); the rotating plate (83) is located inside the chute box (70); the positioning post (84) is arranged on the handle (81); wherein, an outer wall of the chute box (70) near the handle (81) has a first positioning hole; the opening and closing assembly (80) has a closed state and an open state. In the closed state, at least a part of the positioning post (84) is inserted into the first positioning hole and is in limit fit with the first positioning hole to fix the handle (81), the telescopic rod (82), and the rotating plate (83) relative to the chute box (70), and the rotating plate (83) blocks the material outlet (72) to close the material outlet (72).

3. The coal conveying and screening device according to claim 2, characterized in that The outer wall of the chute box (70) near the handle (81) further has a second positioning hole; in the open state, at least a part of the positioning post (84) is inserted into the second positioning hole and is in limit fit with the second positioning hole to fix the handle (81), the telescopic rod (82), and the rotating plate (83) relative to the chute box (70), and the rotating plate (83) avoids the material outlet (72) to open the material outlet (72); by pulling the handle (81) along the axial direction of the telescopic rod (82), the telescopic rod (82) becomes longer, and the positioning post (84) is controlled to be disengaged from the first positioning hole or the second positioning hole; by rotating the handle (81), the telescopic rod (82) and the rotating plate (83) are driven to rotate to switch between the closed state and the open state; by pushing the handle (81) along the axial direction of the telescopic rod (82), the telescopic rod (82) becomes shorter, and at least a part of the positioning post (84) is controlled to extend into the first positioning hole or the second positioning hole.

4. The coal conveying and screening device according to claim 3, characterized in that, There are two positioning posts (84), which are arranged on the handle (81) at intervals and are symmetrically arranged with respect to the central axis of the telescopic rod (82); the first positioning hole and the second positioning hole are each two, the two first positioning holes are symmetrically arranged with respect to the central axis of the telescopic rod (82), and the center connection line of the two first positioning holes is horizontally arranged, the two second positioning holes are symmetrically arranged with respect to the central axis of the telescopic rod (82), and the center connection line of the two second positioning holes is vertically arranged; the positioning post (84) is made of an elastic material; the chute box (70) is of a funnel structure.

5. The coal conveying and screening device according to claim 1, characterized in that, The baffle assembly (40) includes a first baffle and a second baffle. The first baffle and the second baffle have the same structure, and both include a plate body (41) and metal columns (42) provided on the plate body (41). There are two bearing holes (12) on the outer wall of the conveying assembly (10), and the two bearing holes (12) are respectively matched with the first baffle and the second baffle; magnets (13) are provided on the inner walls of the bearing holes (12); when the baffle assembly (40) is fixed on the conveying assembly (10), at least a part of the metal column (42) extends into the bearing hole (12) and is in limit fit with the inner wall of the bearing hole (12); the magnet (13) adsorbs the metal column (42) to fix the metal column (42); wherein, the metal column (42) is made of a magnetic material; the plate body (41) is made of a wear-resistant material; and / or, the plate body (41) is made of a transparent material.

6. The coal conveying and screening device according to claim 1, characterized in that, The sorting assembly (20) includes a vibration generator and an inclined sorting screen plate (21). The sorting screen plate (21) is drivingly connected to the vibration generator, and the vibration generator is used to drive the sorting screen plate (21) to vibrate at a set frequency and / or a set amplitude; the connection end of the sorting screen plate (21) and the vibration generator is matched with the conveyor belt assembly (30) to receive the materials transported from the conveyor belt assembly (30). The other end of the sorting screen plate (21) is matched with the material inlet (71) of the gangue chute assembly (60); a plurality of spaced sieve-through slots (211) are provided on the sorting screen plate (21), the upper surface of the sorting screen plate (21) is the inclined surface, and the sieve-through slots (211) penetrate the inclined surface; wherein, the coal chute assembly (50) is arranged below the sorting screen plate (21), and the coal passes through the sieve-through slots (211) under the action of gravity and enters the coal chute assembly (50) from the material inlet (71) of the coal chute assembly (50); the materials not sifted through by the sorting screen plate (21) are the gangue, and the gangue enters the gangue chute assembly (60) along the inclined surface.

7. The coal conveying and screening device according to claim 6, wherein, The width of the sieve-through slot (211) is greater than the maximum particle size of the coal and less than the minimum particle size of the gangue, so that the coal can pass through the sieve-through slot (211) and the gangue cannot pass through the sieve-through slot (211); the extending direction of the sieve-through slot (211) is parallel to the extending direction of the inclined surface to guide the gangue to move along the inclined surface.

8. The coal conveying and screening device according to claim 6, characterized in that, The coal conveying and screening device further includes an ore identifier (90). The ore identifier (90) is arranged on the conveyor belt assembly (30) and is electrically connected to the vibration generator; the ore identifier (90) correspondingly adjusts the frequency and / or amplitude of the vibration generator for driving the sorting screen plate (21) by identifying the type and / or size of the materials on the conveyor belt assembly (30).

9. The coal conveying and screening device according to claim 1, wherein, The conveying assembly (10) includes: a feed hopper (14) and a vibrating feeder (15). The feed hopper (14) is in communication with the inlet of the vibrating feeder (15) and is used to transport external materials into the vibrating feeder (15); the vibrating feeder (15) is used to vibrate the materials and uniformly transport the materials onto the conveyor belt assembly (30); The outlet of the vibrating feeder (15) is the transport outlet (11).

10. The coal conveying and screening device according to claim 9, characterized in that, The conveying assembly (10) further includes a fine coal hopper (16). The fine coal hopper (16) is arranged below the feed hopper (14) and is internally communicated with the feed hopper (14); wherein, a metal filter screen is inclined in the feed hopper (14), and small particle materials pass through the metal filter screen and fall into the fine coal hopper (16), while large particle materials enter the inlet of the vibrating feeder (15) along the metal filter screen.

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