Belt coal conveying device for power plant

Abstract

The invention discloses a belt coal conveying device for a power plant, and relates to the technical field of belt conveyors. The belt coal conveying device for the power plant comprises a rack, a conveying belt, a material guiding unit, a filtering assembly, a crushing assembly and a buffering assembly, the conveying belt is arranged on the rack in a transmission mode, the material guiding unit comprises a material guiding bin, a processing bin and a material discharging bin, and the material discharging bin corresponds to the conveying belt and is arranged on the rack; the filtering assembly and the crushing assembly are arranged in the treatment bin and used for filtering and crushing coal, the buffering assembly comprises a buffering plate arranged on the discharging bin, and the side face, close to the treatment bin, of the buffering plate is obliquely arranged and used for bearing the coal entering the discharging bin. According to the belt coal conveying device for the power plant, coal conveyed to the front of the conveying belt can be screened and crushed, the conveyed coal is buffered and decelerated, the service life of the conveying belt is prolonged under the condition that the conveying efficiency of the coal is guaranteed, and the use cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of belt conveyors, and in particular, to a belt coal conveying device for power plants. Background Art

[0002] Belt conveyors are widely used in various fields. Especially in the mining field, the role of belt conveyors is particularly important. Most mines use belt conveyors as coal transportation devices.

[0003] In related technologies, a feeding cylinder is often arranged on a belt conveyor. Coal is conveyed to the surface of the conveyor belt through the feeding cylinder to reduce the pulverized coal generated during the coal conveying process. At the same time, the coal is concentrated in the middle of the conveyor belt to prevent the coal from falling off the conveyor belt during the conveying process.

[0004] However, during use, when a relatively large coal particle rolls down along the feeding cylinder, it accelerates and causes a large impact force on the conveyor belt when it falls vertically onto the conveyor belt, affecting the normal conveying operation of the conveyor belt. Moreover, the surface of coal is generally rough and irregular, and relatively large coal particles are extremely likely to puncture or wear the belt, greatly reducing the service life of the belt, thereby increasing the use cost. At the same time, there is a phenomenon that relatively large coal particles are stuck between the output end of the feeding chute and the conveyor belt, thereby affecting the conveying efficiency of the conveyor belt. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems in the related technologies to some extent.

[0006] To this end, an embodiment of the present invention provides a belt coal conveying device for power plants. The belt coal conveying device for power plants can screen and crush the coal before it is conveyed to the conveyor belt, and buffer and decelerate the coal during conveying. While ensuring the conveying efficiency of the coal, the service life of the conveyor belt is extended and the use cost is reduced.

[0007] The belt coal conveying device for power plants according to the embodiment of the present invention includes:

[0008] A frame and a conveyor belt, the conveyor belt is drivingly arranged on the frame;

[0009] A feeding unit, the feeding unit includes a feeding bin, a processing bin and a discharging bin which are sequentially arranged and communicated in the vertical direction. The feeding bin is used to receive and convey coal. The discharging bin is arranged on the frame corresponding to the conveyor belt and has a set distance from the conveyor belt. The discharging bin is used to convey the processed coal to the conveyor belt;

[0010] A filtering component and a crushing component. The filtering component includes a first shaft and a driven plate. The first shaft is rotatably arranged in the processing bin. The driven plate is arranged on the first shaft and is located in the processing bin. The driven plate extends along the axial direction of the first shaft. There are a plurality of driven plates which are arranged at intervals in the circumferential direction of the first shaft. The crushing component includes a second shaft and a plurality of crushing rollers. The second shaft is parallel to the first shaft and is rotatably arranged in the processing bin. The plurality of crushing rollers are arranged at intervals along the axial direction of the second shaft. A filtering groove for the second shaft to pass through is arranged on the driven plate corresponding to the second shaft, and a crushing groove for the crushing rollers to pass through is arranged on the driven plate corresponding to the crushing rollers;

[0011] A buffer component. The buffer component includes a buffer plate. The buffer plate is arranged in the discharge bin. The side surface of the buffer plate close to the processing bin is inclined and is used for receiving the coal entering the discharge bin.

[0012] The belt coal conveying device for power plants in the embodiments of the present invention can screen and crush the coal before it is conveyed to the conveyor belt, and buffer and decelerate the coal during transportation. While ensuring the transportation efficiency of the coal, it prolongs the service life of the conveyor belt and reduces the use cost.

[0013] In some embodiments, the filtering component includes a driving motor and a driving gear. The driving motor is arranged in the processing bin and is used for driving the first shaft to rotate. The driving gear is fixedly arranged on the first shaft. The crushing component includes a driven gear. The driven gear is arranged on the second shaft and is meshed with the driving gear for transmission.

[0014] In some embodiments, the driven plate is U-shaped and includes a first plate segment and second and third plate segments arranged at both ends of the first plate segment. The second plate segment is fixedly connected to the first shaft. The crushing component includes a driving ring, a first gear, a second gear and a third gear. The driving ring is an internal gear ring. The driving ring is sleeved on the first shaft and the second shaft and is coaxially arranged with the first shaft. The driving ring is fixedly connected to a plurality of third plate segments. The first gear is fixedly arranged on the first shaft. The second gear is rotatably arranged on the second shaft and is meshed with the driving ring for transmission. The third gear is arranged between the first gear and the second gear and is rotatably connected to the processing bin. The third gear is meshed with the first gear for transmission and is meshed with the second gear for transmission.

[0015] In some embodiments, the crushing assembly includes a protective plate and a limit plate, the protective plate is coaxially sleeved on the first shaft and the second shaft corresponding to the drive ring and is located on the side of the drive ring close to the first plate segment, the protective plate is rotatably matched with the first shaft and the second shaft respectively, the diameter of the protective plate is larger than the root circle diameter of the drive plate, and the limit plate is arranged on the side of the protective plate away from the first plate segment and is fixedly connected to the processing chamber.

[0016] In some embodiments, a plurality of the limit plates are arranged at circumferential intervals along the first axis, and the limit plates are arc-shaped plates. The axis of the circular ring corresponding to the arc-shaped plates is coaxially arranged with the axis of the first axis, and the outer diameter of the circular ring corresponding to the arc-shaped plates is equal to the diameter of the tooth top circle of the drive ring.

[0017] In some embodiments, a support unit is included, and a plurality of the support units are arranged at intervals along the frame. The support unit includes a support frame, a first roller and a second roller. The support frame is installed on the frame, the first roller is rotatably installed on the support frame and is used to support the conveyor belt, the extension direction of the first roller is perpendicular to the forward direction of the conveyor belt, two second rollers are rotatably provided and symmetrically arranged on both sides of the axis of the first roller, and the second rollers are inclined and are used to support the conveyor belt.

[0018] In some embodiments, the discharge bin includes a box body, a bottom plate, a baffle and a first torsion spring. The bottom plate is arranged on the side of the buffer plate close to the conveyor belt, and a discharge port is provided on the side of the box body away from the buffer plate. The baffle is rotatably arranged on the box body corresponding to the discharge port. The two ends of the first torsion spring are respectively connected to the box body and the baffle. The first torsion spring is used to drive the baffle to rotate in a direction close to the box body.

[0019] In some embodiments, a driving assembly is included, which includes a fixed block, a connecting rod, a turntable, a toggle piece and a second torsion spring, one end of the fixed block is fixedly connected to the conveyor belt, the connecting rod is arranged at the end of the fixed block, the turntable is rotatably arranged at the end of the connecting rod, the toggle piece is arranged at the end of the turntable away from the connecting rod, the second torsion spring is sleeved on the connecting rod and its two ends are respectively fixedly connected to the fixed block and the turntable, a fixed rod is provided at the end of the baffle close to the conveyor belt corresponding to the toggle piece, and the toggle piece is used to cooperate with the fixed rod to stop and drive the baffle to rotate in a direction away from the box body.

[0020] In some embodiments, a slot parallel to the baffle is provided on the bottom plate. A plug board is provided on one side of the buffer plate close to the bottom plate. The plug board is slidably inserted into the slot. A buffer spring is fixedly provided between the buffer plate and the bottom plate, and the buffer plate and the box body are in a blocking fit in the up-and-down direction.

[0021] In some embodiments, diversion blocks are provided on both sides of the driven plate. The cross section of the diversion block is triangular or isosceles trapezoidal, and / or a first rack is provided at one end of the driven plate far from the first shaft. The material guiding bin is conically arranged, and the cross-sectional dimension of the material guiding bin decreases in the direction close to the treatment bin. A second rack corresponding to the first rack is provided on the end face of the material guiding bin close to the treatment plant. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0023] Figure 2 is a schematic structural diagram of the material guiding unit in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0024] Figure 3 is a cross-sectional view of the material guiding unit in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0025] Figure 4 is a schematic connection diagram of the first shaft and the driven plate in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0026] Figure 5 is a schematic structural diagram of the driven plate in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0027] Figure 6 is a schematic connection diagram of the second shaft and the crushing roller in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0028] Figure 7 is a schematic connection diagram of the first shaft and the second shaft in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0029] Figure 8 is a schematic connection diagram of the driving ring and the first shaft in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0030] Figure 9 is a schematic connection diagram of the protective plate and the limiting plate in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0031] Figure 10 is a schematic structural diagram of the support unit in the belt coal conveying device for a power plant according to an embodiment of the present invention.

[0032] Figure 11 It is a schematic structural diagram of a discharge bin in a belt coal conveying device for a power plant according to an embodiment of the present invention.

[0033] Figure 12 It is a schematic diagram of the structure of a driving component in a belt coal conveying device for a power plant according to an embodiment of the present invention.

[0034] Figure 13 It is a schematic diagram of the connection of a buffer plate in a belt coal conveying device for a power plant according to an embodiment of the present invention.

[0035] Figure 14 It is a schematic structural diagram of a material guide bin in a belt coal conveying device for a power plant according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] Rack 1;

[0038] Conveyor belt 2;

[0039] Material guide unit 3; material guide bin 31; second rack 311; processing bin 32; material discharge bin 33; box body 331; bottom plate 332; baffle 333; first torsion spring 334; L-shaped plate 335; slot 336; fixing rod 337;

[0040] Filter assembly 4; first shaft 41; driven plate 42; filter slot 421; crushing slot 422; first plate segment 423; second plate segment 424; third plate segment 425; drive motor 43; driving gear 44; guide block 45; first rack 46;

[0041] Crushing assembly 5; second shaft 51; crushing roller 52; driven gear 53; driving ring 54; first gear 55; second gear 56; third gear 57; protective plate 58; limiting plate 59;

[0042] Buffer assembly 6; buffer plate 61; insert plate 62; buffer spring 63;

[0043] Support unit 7; support frame 71; first roller 72; second roller 73;

[0044] Driving assembly 8; fixing block 81; connecting rod 82; rotating disk 83; toggle member 84; second torsion spring 85. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0046] like Figures 1 to 14As shown in the figure, the belt coal conveying device for power plants according to the embodiments of the present invention includes a frame 1, a conveyor belt 2, a feeding unit 3, a filtering component 4, a crushing component 5, and a buffering component 6. The conveyor belt 2 is drivingly arranged on the frame 1. The feeding unit 3 includes a feeding bin 31, a processing bin 32, and a discharging bin 33 that are sequentially arranged and communicated in the vertical direction. The feeding bin 31 is used to receive and convey coal. The discharging bin 33 is arranged on the frame 1 corresponding to the conveyor belt 2 and has a set distance from the conveyor belt 2. The discharging bin 33 is used to convey the processed coal to the conveyor belt 2. The filtering component 4 includes a first shaft 41 and a driven plate 42. The first shaft 41 is rotatably arranged in the processing bin 32. The driven plate 42 is arranged on the first shaft 41 and is located in the processing bin 32. The driven plate 42 extends along the axial direction of the first shaft 41. There are a plurality of driven plates 42, which are arranged at intervals along the circumferential direction of the first shaft 41. The crushing component 5 includes a second shaft 51 and a plurality of crushing rollers 52. The second shaft 51 is parallel to the first shaft 41 and is rotatably arranged in the processing bin 32. The plurality of crushing rollers 52 are arranged at intervals along the axial direction of the second shaft 51. A filtering groove 421 for the second shaft 51 to pass through is arranged on the driven plate 42 corresponding to the second shaft 51, and a crushing groove 422 for the crushing rollers 52 to pass through is arranged on the driven plate 42 corresponding to the crushing rollers 52. The buffering component 6 includes a buffer plate 61. The buffer plate 61 is arranged in the discharging bin 33. The side surface of the buffer plate 61 close to the processing bin 32 is inclined and is used to receive the coal entering the discharging bin 33.

[0047] When the belt coal conveying device for power plants according to the embodiments of the present invention is in use, coal enters the processing bin 32 through the feeding bin 31. The coal falling into the processing bin 32 reaches the position of the driven plate 42. A filtering cavity is left between two adjacent driven plates 42 and the processing bin 32. Part of the coal can pass through the filtering groove 421 and fall into the discharging bin 33. The coal that does not pass through the filtering groove 421 moves in the processing bin 32 following the driven plate 42. When it moves from the baffle 333 to the position of the second shaft 51, the crushing rollers 52 and the driven plate 42 cooperate with each other to squeeze and crush the coal in the filtering cavity. The squeezed and crushed coal can fall into the discharging bin 33 through the filtering groove 421. The coal entering the discharging bin 33 falls on the buffer plate 61. The buffer plate 61 bears the impact of the coal, and the coal falling on the buffer plate 61 can slide down along the inclined side surface of the buffer plate 61 to the conveyor belt 2. The screened and crushed coal is conveyed by the conveyor belt 2.

[0048] The belt coal conveying device for power plants according to the embodiments of the present invention can screen and crush the coal before it is conveyed to the conveyor belt 2, ensure the maximum size of the coal conveyed on the conveyor belt 2, and can buffer and decelerate the coal during conveying, reduce the impact force of the coal falling onto the conveyor belt 2, extend the service life of the conveyor belt 2, and reduce the use cost while ensuring the conveying efficiency of the coal.

[0049] Optionally, the cross-section of the processing bin 32 is circular, and the radius dimension corresponding to the cross-section of the processing bin 32 is equal to the distance from the end of the driven plate 42 away from the first shaft 41 to the axis of the first shaft 41, so as to ensure that no coal falls through the gap between the driven plate 42 and the side wall of the processing bin 32 during the rotation of the driven plate 42, and ensure the screening effect of the coal.

[0050] In some embodiments, as Figure 3 , Figure 7 and Figure 8 shown, the filtering assembly 4 includes a driving motor 43 and a driving gear 44. The driving motor 43 is arranged in the processing bin 32 and is used to drive the first shaft 41 to rotate. The driving gear 44 is fixedly arranged on the first shaft 41. The crushing assembly 5 includes a driven gear 53. The driven gear 53 is arranged on the second shaft 51 and meshes with the driving gear 44 for transmission.

[0051] Specifically, the driving motor 43 is fixedly arranged on the processing bin 32. The output shaft of the driving motor 43 is coaxially arranged and fixedly connected with the first shaft 41. The driving gear 44 is arranged on the part of the first shaft 41 extending out of the processing bin 32. The driven gear 53 is arranged on the part of the second shaft 51 extending out of the processing bin 32. The driving gear 44 and the driven gear 53 mesh and rotate. When the driving motor 43 rotates, it drives the first shaft 41 and the driving gear 44 to rotate. The first shaft 41 drives the driven plate 42 to rotate in the first direction. The driving gear 44 drives the second shaft 51 to rotate in the second direction opposite to the first direction through the driven gear 53. The crushing roller 52 rotates in the same direction as the second shaft 51, that is, the driven plate 42 and the crushing roller 52 realize the crushing of the coal. The structure is simple and convenient for processing and implementation.

[0052] In some embodiments, as Figure 5 and Figure 8 shown, the driven plate 42 is U-shaped and includes a first plate segment 423 and second plate segments 424 and third plate segments 425 arranged at both ends of the first plate segment 423. The second plate segment 424 is fixedly connected with the first shaft 41. The crushing assembly 5 includes a driving ring 54, a first gear 55, a second gear 56 and a third gear 57. The driving ring 54 is an internal gear ring. The driving ring 54 is sleeved on the first shaft 41 and the second shaft 51 and is coaxially arranged with the first shaft 41. The driving ring 54 is fixedly connected with a plurality of third plate segments 425. The first gear 55 is fixedly arranged on the first shaft 41. The second gear 56 is rotatably arranged on the second shaft 51 and meshes with the driving ring 54 for transmission. The third gear 57 is arranged between the first gear 55 and the second gear 56 and is rotatably connected with the processing bin 32. The third gear 57 meshes with the first gear 55 and meshes with the second gear 56 for transmission.

[0053] Specifically, a filtering groove 421 for coal and the second shaft 51 is defined between the first plate segment 423, the second plate segment 424, and the third plate segment 425. Avoidance grooves are symmetrically provided on the second plate segment 424 and the third plate segment 425. A crushing groove 422 for the crushing roller 52 is defined between two corresponding filtering grooves 421. When the first shaft 41 rotates, it drives the driven plate 42 to rotate in the first direction. The first gear 55 on the first shaft 41 drives the third gear 57 to rotate in the second direction through meshing, and the third gear 57 drives the second gear 56 to rotate in the first direction through meshing. Since the second gear 56 is rotationally connected to the second shaft 51, the second gear 56 rotates relative to the second shaft 51 without mutual interference. The second gear 56 and the driving ring 54 mesh and rotate. Since the second gear 56 is located inside the driving ring 54, the driving ring 54 rotates in the same direction as the second gear 56, that is, the driving ring 54 applies a force to the driven plate 42 to rotate in the first direction. By setting the driving ring 54, the connection strength between the driven plate 42 and the first shaft 41 can be ensured, the maximum crushing force between the driven plate 42 and the crushing roller 52 can be increased, the deformation of the driven plate 42 during use can be reduced, the service life can be extended, and the screening and crushing efficiency of coal can be ensured.

[0054] In some embodiments, as Figure 8 and Figure 9 shown, the crushing assembly 5 includes a protective plate 58 and a limiting plate 59. The protective plate 58 is coaxially sleeved on the first shaft 41 and the second shaft 51 corresponding to the driving ring 54 and is located on the side of the driving ring 54 close to the first plate segment 423. The protective plate 58 is rotationally matched with the first shaft 41 and the second shaft 51 respectively. The diameter of the protective plate 58 is larger than the root circle diameter of the driving plate. The limiting plate 59 is arranged on the side of the protective plate 58 away from the first plate segment 423 and is fixedly connected to the processing bin 32.

[0055] By setting the protective plate 58, the teeth on the driving ring 54 can be protected, and at the same time, the first gear 55, the second gear 56, and the third gear 57 can be protected, avoiding coal entering the driving ring 54 and interfering with the meshing between the first gear 55 and the third gear 57, the meshing between the third gear 57 and the second gear 56, and the meshing between the second gear 56 and the driving ring 54, and ensuring the effective transmission of the driving ring 54.

[0056] In some embodiments, as Figure 8 and Figure 9 shown, a plurality of limiting plates 59 are arranged at intervals along the circumferential direction of the first shaft 41. The limiting plates 59 are arc-shaped plates. The axis of the circle corresponding to the arc-shaped plate is coaxially arranged with the axis of the first shaft 41, and the outer diameter of the circle corresponding to the arc-shaped plate is equal to the addendum circle diameter of the driving ring 54.

[0057] By setting the limit plate 59 as an arc-shaped plate, while the limit plate 59 supports and fixes the protection plate 58, the arc-shaped support plate can also constrain and guide the rotating drive ring 54, preventing the drive ring 54 from deforming during long-term operation and thus affecting the meshing transmission between the second gear 56 and the drive ring 54.

[0058] In some embodiments, as Figure 10 shown, it includes a support unit 7. A plurality of support units 7 are arranged at intervals along the frame 1. The support unit 7 includes a support frame 71, a first roller 72, and a second roller 73. The support frame 71 is arranged on the frame 1. The first roller 72 is rotatably arranged on the support frame 71 and is used to support the conveyor belt 2. The extending direction of the first roller 72 is perpendicular to the advancing direction of the conveyor belt 2. Two second rollers 73 are rotatably arranged and symmetrically arranged on both axial sides of the first roller 72. The second roller 73 is inclined and is used to support the conveyor belt 2.

[0059] Specifically, the support frame 71 includes a horizontal plate and vertical plates arranged at both ends of the horizontal plate. The extending direction of the horizontal plate is perpendicular to the advancing direction of the conveyor belt 2. The first roller 72 is arranged in parallel and rotatably on the horizontal plate. Two second rollers 73 are symmetrically arranged on both sides of the first roller 72. One end of the second roller 73 is rotatably arranged on the horizontal plate, and the other end of the second roller 73 is rotatably arranged on the vertical plate. And an angle compensator is provided at the end of the second roller 73 connected to the horizontal plate. By arranging the first roller 72 and the second roller 73, the moving conveyor belt 2 can be supported, facilitating the tensioning of the conveyor belt 2, and the inclined second roller 73 can make both sides of the conveyor belt 2 move obliquely to prevent coal from slipping off the conveyor belt 2 during transportation.

[0060] In some embodiments, as Figure 11 shown, the discharge bin 33 includes a box body 331, a bottom plate 332, a baffle 333, and a first torsion spring 334. The bottom plate 332 is arranged on the side of the buffer plate 61 close to the conveyor belt 2. A discharge port is provided on the side of the box body 331 away from the buffer plate 61. The baffle 333 is rotatably arranged corresponding to the discharge port on the box body 331. Both ends of the first torsion spring 334 are respectively connected to the box body 331 and the baffle 333. The first torsion spring 334 is used to drive the baffle 333 to rotate towards the direction close to the box body 331.

[0061] Specifically, rotating shafts are provided on both sides of the top of the baffle plate 333, which are rotatably connected to the box body 331. The first torsion spring 334 is sleeved on the rotating shaft, and the two ends of the first torsion spring 334 are respectively fixedly connected to the baffle plate 333 and the box body 331. A discharge port is provided on one side of the box body 331. The coal is accumulated at the discharge port after passing through the buffer plate 61. When the coal is accumulated to a certain amount, the baffle plate 333 can be pushed to rotate by the dead weight of the coal to open the discharge port, so that the coal is discharged from the discharge bin 33 to the conveyor belt 2. At this time, the first torsion spring 334 is deformed by the force. When the coal in the discharge bin 33 is discharged, the baffle plate 333 rotates and blocks the discharge port under the elastic force of the first torsion spring 334 and the dead weight of the baffle plate 333. The baffle plate 333 can buffer and decelerate the coal discharged from the discharge bin 33, thereby ensuring the protection of the conveyor belt 2.

[0062] Optionally, two ends of the box body 331 are fixedly connected to the rack 1 via an L-shaped plate 335 .

[0063] In some embodiments, Figure 12 As shown, it includes a driving component 8, which includes a fixed block 81, a connecting rod 82, a turntable 83, a toggle member 84 and a second torsion spring 85. One end of the fixed block 81 is fixedly connected to the conveyor belt 2, the connecting rod 82 is arranged at the end of the fixed block 81, the turntable 83 is rotatably arranged at the end of the connecting rod 82, the toggle member 84 is arranged at the end of the turntable 83 away from the connecting rod 82, the second torsion spring 85 is sleeved on the connecting rod 82 and the two ends are respectively fixedly connected to the fixed block 81 and the turntable 83, and the end of the baffle 333 close to the conveyor belt 2 is provided with a fixed rod 337 corresponding to the toggle member 84, and the toggle member 84 is used to cooperate with the fixed rod 337 to stop and drive the baffle 333 to rotate in a direction away from the box body 331.

[0064] Specifically, the elastic coefficient of the second torsion spring 85 is greater than that of the first torsion spring 334. The fixed block 81 moves along with the conveyor belt 2. The connecting rod 82 supports the turntable 83 and the toggling member 84 to a set position. During the movement of the conveyor belt 2, the toggling member 84 abuts against the fixed rod 337. The acting force exerted on the fixed rod 337 by the conveyor belt 2 through the second torsion spring 85 and the toggling member 84 is greater than the sum of the self-gravity of the baffle 333 and the acting force exerted on the baffle 333 by the first torsion spring 334. The toggling member 84 drives the baffle 333 to rotate to open the discharge port. When the baffle 333 rotates to a set angle, the sum of the self-gravity of the baffle 333 and the acting force exerted on the baffle 333 by the first torsion spring 334 is greater than the acting force exerted on the fixed rod 337 by the conveyor belt 2 through the second torsion spring 85 and the toggling member 84. The second torsion spring 85 is deformed under force. Furthermore, the toggling member 84 rotates relative to the connecting rod 82 through the turntable 83, releasing the abutting fit between the toggling member 84 and the fixed rod 337. The baffle 333 rotates under its own gravity and the acting force exerted on the baffle 333 by the first torsion spring 334 to block the discharge port, realizing the intermittent continuous discharging of the discharge bin 33 and ensuring the stable conveying of coal.

[0065] Optionally, the toggling member 84 is a toggle rod, and the extending direction of the toggle rod is perpendicular to the extending direction of the connecting rod 82.

[0066] Optionally, the toggling member 84 is a semi-circular ring, and the axis of the semi-circular ring is parallel to the axis of the connecting rod 82, that is, the semi-circular ring can be coaxially arranged with the turntable 83 or eccentrically arranged with the turntable 83.

[0067] In some embodiments, as Figure 11 and Figure 13 shown, a slot 336 parallel to the baffle 333 is provided on the bottom plate 332. An insertion plate 62 is provided on the side of the buffer plate 61 close to the bottom plate 332. The insertion plate 62 is slidably inserted into the slot 336. A buffer spring 63 is fixedly arranged between the buffer plate 61 and the bottom plate 332, and the buffer plate 61 is in abutting fit with the box body 331 in the vertical direction.

[0068] By providing the insertion plate 62 and the slot 336 and restricting the moving direction of the buffer plate 61, and arranging the buffer spring 63 between the buffer plate 61 and the bottom plate 332, when the buffer plate 61 is impacted by coal, it can be buffered by the buffer spring 63, thereby reducing the impact force received by the buffer plate 61. And by abutting the buffer plate 61 and the box body 331 in the vertical direction, it is ensured that the moving distance of the buffer plate 61 is restricted when the buffer spring 63 releases elastic force, facilitating the elimination of the elastic force in the buffer spring 63.

[0069] Optionally, the buffer plate 61 includes a buffer section and a limiting section. The cross-section of the buffer section is triangular. The side of the buffer section close to the discharge port is the buffer surface and is inclined. The bottom surface of the buffer section is parallel to the bottom plate 332. The side of the buffer section far from the side close to the discharge port is in blocking cooperation with the box body 331. The limiting section is arranged at the top of the buffer section and fits against the side wall of the box body 331.

[0070] Optionally, a sleeve and a sliding rod in sliding fit are arranged between the bottom plate 332 and the buffer plate 61. The buffer spring 63 is sleeved on the sleeve and the sliding rod. The ends of the sleeve and the sliding rod close to each other are in blocking cooperation, and a damping is provided between the sleeve and the sliding rod to increase the sliding friction force between the sleeve and the sliding rod. The other end of the sleeve is fixedly connected to the bottom plate 332, and the other end of the sliding rod is fixedly connected to the buffer plate 61.

[0071] In some embodiments, as Figure 4 and Figure 5 shown, flow guiding blocks 45 are arranged on both sides of the driven plate 42. The cross-section of the flow guiding block 45 is triangular or isosceles trapezoidal. By arranging the flow guiding blocks 45, a pressing effect is exerted on larger coal mine particles during the crushing process, facilitating the fixation of the coal to be crushed between two adjacent driven plates 42, and improving the crushing accuracy of the driven plate 42 and the crushing roller 52 for the coal.

[0072] In some embodiments, as Figure 5 and Figure 14 shown, a first rack 46 is arranged at one end of the driven plate 42 far from the first shaft 41. The material guiding bin 31 is arranged in a conical shape, and the cross-sectional dimension of the material guiding bin 31 decreases along the direction close to the processing bin 32. A second rack 311 corresponding to the first rack 46 is arranged on the end face of the material guiding bin 31 close to the processing plant.

[0073] By arranging the first rack 46 and the second rack 311, when coal is stuck between the driven plate 42 and the material guiding bin 31, the first rack 46 and the second rack 311 can form a shearing effect to crush the coal, effectively preventing larger coal mine particles from affecting the rotation of the driven plate 42, ensuring the coherence of the driven plate 42 during rotation, and further ensuring the conveying efficiency of the coal.

[0074] Optionally, the extension line from the tooth tip to the tooth root of the tooth on the first rack 46 passes through the axis of the first shaft 41, or the extension line from the tooth tip to the tooth root of the tooth on the first rack 46 is perpendicular to the corresponding driven plate 42.

[0075] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0076] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0079] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0080] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A belt coal conveyor for a power plant, characterized in that: include: A frame and a conveyor belt, wherein the conveyor belt is driven by the frame; A material guide unit, the material guide unit comprises a material guide bin, a processing bin and a discharge bin which are sequentially arranged and connected in the up-down direction, the material guide bin is used to receive and convey the coal, the discharge bin is arranged on the frame corresponding to the conveyor belt and has a set distance from the conveyor belt, and the discharge bin is used to convey the processed coal to the conveyor belt; A filter assembly and a crushing assembly, wherein the filter assembly comprises a first shaft and a driven plate, the first shaft is rotatably arranged on the processing bin, the driven plate is arranged on the first shaft and is located in the processing bin, the driven plate extends axially along the first shaft, a plurality of driven plates are provided and are arranged at intervals along the circumferential direction of the first shaft, the crushing assembly comprises a second shaft and a plurality of crushing rollers, the second shaft is parallel to the first shaft and is rotatably arranged on the processing bin, a plurality of crushing rollers are arranged at intervals along the axial direction of the second shaft on the second shaft, a filter groove for passing the second shaft is provided on the driven plate corresponding to the second shaft, and a crushing groove for passing the crushing roller is provided on the driven plate corresponding to the crushing roller; A buffer assembly includes a buffer plate, which is arranged at the discharge bin. The side of the buffer plate close to the processing bin is inclined and is used to receive the coal entering the discharge bin.

2. The belt coal conveying device for power plants according to claim 1, characterized in that: The filtering assembly includes a driving motor and a driving gear. The driving motor is disposed in the processing chamber and is used to drive the first shaft to rotate. The driving gear is fixedly disposed on the first shaft. The crushing assembly includes a driven gear. The driven gear is disposed on the second shaft and meshes with the driving gear for transmission.

3. The belt coal conveyor for power plants according to claim 2, characterized in that: The driven plate is U-shaped and includes a first plate segment and a second plate segment and a third plate segment arranged at both ends of the first plate segment. The second plate segment is fixedly connected to the first shaft. The crushing assembly includes a drive ring, a first gear, a second gear and a third gear. The drive ring is an inner gear ring. The drive ring is sleeved on the first shaft and the second shaft and is coaxially arranged with the first shaft. The drive ring is fixedly connected to multiple third plate segments. The first gear is fixedly arranged on the first shaft. The second gear is rotatably arranged on the second shaft and meshes with the drive ring for transmission. The third gear is arranged between the first gear and the second gear and is rotatably connected to the processing bin. The third gear meshes with the first gear and meshes with the second gear for transmission.

4. The belt coal conveyor for power plants according to claim 3, characterized in that: The crushing assembly includes a protective plate and a limit plate. The protective plate is coaxially sleeved on the first shaft and the second shaft corresponding to the drive ring and is located on the side of the drive ring close to the first plate section. The protective plate is rotatably matched with the first shaft and the second shaft respectively. The diameter of the protective plate is larger than the root circle diameter of the drive plate. The limit plate is arranged on the side of the protective plate away from the first plate section and is fixedly connected to the processing chamber.

5. The belt coal conveying device for power plants according to claim 4, characterized in that: The limiting plates are arranged in plurality along the circumferential direction of the first shaft, and are arc-shaped plates. The axis of the circular ring corresponding to the arc-shaped plates is coaxially arranged with the axis of the first shaft, and the outer diameter of the circular ring corresponding to the arc-shaped plates is equal to the diameter of the tooth top circle of the driving ring.

6. The belt coal conveying device for power plants according to claim 1, characterized in that: It includes a support unit, and a plurality of the support units are arranged at intervals along the frame. The support unit includes a support frame, a first roller and a second roller. The support frame is arranged on the frame. The first roller is rotatably arranged on the support frame and is used to support the conveyor belt. The extension direction of the first roller is perpendicular to the forward direction of the conveyor belt. Two second rollers are rotatably arranged and symmetrically arranged on both sides of the axial direction of the first roller. The second rollers are inclined and are used to support the conveyor belt.

7. The belt coal conveying device for power plants according to claim 6, characterized in that: The discharge bin includes a box body, a bottom plate, a baffle and a first torsion spring. The bottom plate is arranged on the side of the buffer plate close to the conveyor belt. A discharge port is arranged on the side of the box body away from the buffer plate. The baffle is rotatably arranged on the box body corresponding to the discharge port. The two ends of the first torsion spring are respectively connected to the box body and the baffle. The first torsion spring is used to drive the baffle to rotate in a direction close to the box body.

8. The belt coal conveying device for power plants according to claim 7, characterized in that: The driving assembly includes a fixed block, a connecting rod, a turntable, a toggle piece and a second torsion spring, one end of the fixed block is fixedly connected to the conveyor belt, the connecting rod is arranged at the end of the fixed block, the turntable is rotatably arranged at the end of the connecting rod, the toggle piece is arranged at the end of the turntable away from the connecting rod, the second torsion spring is sleeved on the connecting rod and the two ends are respectively fixedly connected to the fixed block and the turntable, a fixed rod is provided at the end of the baffle close to the conveyor belt corresponding to the toggle piece, and the toggle piece is used to cooperate with the fixed rod to stop and drive the baffle to rotate in a direction away from the box body.

9. The belt coal conveying device for power plants according to claim 7, characterized in that: The bottom plate is provided with a slot parallel to the baffle plate, the buffer assembly includes an insert plate and a buffer spring, the insert plate is provided on a side of the buffer plate close to the bottom plate and is slidably inserted in the slot, the buffer spring is fixed between the buffer plate and the bottom plate, and the buffer plate is blocked and matched with the box body in the up and down directions.

10. The belt coal conveying device for power plants according to claim 1, characterized in that: Guide blocks are provided on both sides of the driven plate, and the cross-section of the guide blocks is triangular or isosceles trapezoidal, and / or a first rack is provided at the end of the driven plate away from the first axis, the guide bin is arranged in a conical shape, and the cross-sectional size of the guide bin decreases in the direction approaching the processing bin, and a second rack is provided on the end surface of the guide bin close to the processing plant corresponding to the first rack.

Images