Coal conveying device for boiler combustion

Abstract

The invention relates to the technical field of coal conveying, and discloses a coal conveying device for boiler combustion, which comprises a base, two symmetrically distributed mounting racks are mounted on the base, a first rotating shaft and a second rotating shaft are rotatably arranged on the mounting racks, and two symmetrically distributed first driving wheels are mounted on each of the first rotating shaft and the second rotating shaft; the two first driving wheels are in transmission connection through synchronous belts, sliding grooves are formed in the synchronous belts and movably connected with sliding belts, a first conveying belt is installed between the sliding belts in the two synchronous belts, a filter screen is arranged on the first conveying belt, and limiting blocks are arranged on the sliding belts at intervals. Limiting grooves in sliding connection with the limiting blocks are formed in the inner wall of the sliding groove at intervals. In the coal conveying process of the conveying belt, large-size coal can be separated, and meanwhile, the large-size coal can be crushed, so that the coal grinding efficiency of the grinding machine can be improved, and meanwhile, the functions of the conveying device are enriched.

Description

Technical Field

[0001] The invention relates to the technical field of coal transportation, in particular to a coal transportation device for boiler combustion. Background Art

[0002] Power stations usually use fluidized bed furnaces and pulverized coal furnaces in the process of power generation. Pulverized coal furnaces are boiler equipment that uses pulverized coal as fuel. The combustion characteristic of pulverized coal furnaces is that the fuel enters the combustion chamber together with the air and burns in a suspended state. Therefore, pulverized coal furnaces usually require continuous addition of coal into the boiler, which requires the use of coal conveying equipment.

[0003] In the process of boiler coal transportation, the unprocessed coal is usually first transported to the grinding machine through a conveyor belt for processing, and then ground into fine powder by the grinding machine. After that, the coal enters the boiler for combustion. Grinding the coal into fine powder can facilitate the full combustion of the coal in the boiler.

[0004] Existing coal conveying devices usually transport coal through conveyor belts, but this method of transporting coal is relatively traditional and has a relatively single function. In the process of conveying coal by the conveyor belt, larger coal blocks cannot be separated, and larger coal blocks cannot be crushed. The presence of large-sized coal can easily affect the processing efficiency of the grinding machine. For this reason, technical personnel in this field have proposed a coal conveying device for boiler combustion to solve the problems raised in the above background. Summary of the invention

[0005] The object of the present invention is to provide a coal conveying device for boiler combustion to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A coal conveying device for boiler combustion, comprising a base, two symmetrically distributed mounting frames are installed on the base, a first rotating shaft and a second rotating shaft are rotatably arranged on the mounting frames, two symmetrically distributed first driving wheels are installed on the first rotating shaft and the second rotating shaft, the two first driving wheels are connected through a synchronous belt transmission, a slide groove is provided in the synchronous belt, the slide groove is movably connected to the slide belt, a first conveyor belt is installed between the slide belts in the two synchronous belts, a filter is provided on the first conveyor belt, limit blocks are arranged at intervals on the slide belt, and limit grooves slidably connected to the limit blocks are arranged at intervals on the inner wall of the slide groove, and further comprising: A material guiding mechanism, which is arranged on the mounting frame and is used to convey the small-sized coal filtered by the filter screen; A crushing mechanism, which is arranged on the material guiding mechanism and is used to crush the large-sized coal after being screened by the filter; A connecting mechanism, the two ends of which are rotatably connected to the first rotating shaft and the second rotating shaft respectively, and are also connected to the crushing mechanism, and are used to be movably connected to the first transmission belt; A swing mechanism, which is arranged in the material guiding mechanism and is used to drive the connecting mechanism to swing; A conveying mechanism, which is arranged on the mounting frame and is used to convey the small-sized coal after being screened by the filter; A driving mechanism, the driving mechanism is connected to the conveying mechanism, the first rotating shaft and the second rotating shaft, and is used to drive the conveying mechanism, the first rotating shaft and the second rotating shaft; A supporting mechanism is connected to the mounting frame and is used to support the synchronous belt and the first conveyor belt.

[0007] As a preferred technical solution of the present invention, the material guide mechanism includes two fixing frames arranged on the mounting frame, the fixing frames fixedly connecting the first material guide plate and the second material guide plate, and the first material guide plate is located between the two mounting frames, the second material guide plate is located between the base and the first material guide plate, the first material guide plate is a V-shaped structure, and the height of the first material guide plate decreases from the middle to both sides, the second material guide plate is obliquely arranged, and the height of the second material guide plate decreases from one side close to the mounting frame to the other side.

[0008] As a preferred technical solution of the present invention, the crushing mechanism includes a crushing frame slidably connected to the first material guide plate, and the crushing frame is slidably connected to the first material guide plate, an elastic member is provided in the middle of the crushing frame, and the elastic member is connected to the crushing plate, two connecting rods are installed on the mounting frame, and a material blocking plate is installed on the connecting rods.

[0009] As a preferred technical solution of the present invention, the elastic member includes an adjustment cavity opened in the middle of the crushing frame, an adjustment block connected to the crushing plate is slidably arranged in the adjustment cavity, and several elastic members connected to the adjustment cavity are arranged at both ends of the adjustment block.

[0010] As a preferred technical solution of the present invention, two symmetrically distributed fixed cylinders are installed on the mounting frame, the fixed cylinders are slidably connected to the sliding rod, and the sliding rod is fixedly connected to the crushing plate.

[0011] As a preferred technical solution of the present invention, the connecting mechanism includes a movable frame connected to the crushing frame, both ends of the movable frame are arc surfaces and are in contact with the first conveyor belt, the two ends of the movable frame are respectively rotatably connected to the first rotating shaft and the second rotating shaft, and two symmetrically distributed limiting grooves are provided at both ends of the movable frame, and the inner wall of the first conveyor belt is provided with a limiting strip that matches the limiting groove.

[0012] As a preferred technical solution of the present invention, the swing mechanism includes a first driving member installed on the top of the first material guide plate, the first driving member is connected to a transmission shaft, a swing rod is installed on the transmission shaft, a sliding column is installed at one end of the swing rod away from the transmission shaft, and a swing groove is provided on the movable frame for sliding connection with the sliding column.

[0013] As a preferred technical solution of the present invention, the support mechanism includes a support frame fixedly connected to the mounting frame, and a plurality of rollers distributed at intervals are rotatably arranged on the support frame.

[0014] As a preferred technical solution of the present invention, the conveying mechanism includes a third rotating shaft and a fourth rotating shaft rotatably arranged on the mounting frame, and second driving wheels are installed on the third rotating shaft and the fourth rotating shaft. The two second driving wheels are connected by a second conveyor belt transmission.

[0015] As a preferred technical solution of the present invention, the driving mechanism includes a first transmission wheel installed at both ends of the first rotating shaft and the second rotating shaft, second transmission wheels are installed at both ends of the third rotating shaft and the fourth rotating shaft, a driving shaft is installed on the mounting frame, and a third transmission wheel is installed on the driving shaft. The first transmission wheel, the second transmission wheel and the third transmission wheel are connected by a transmission belt, and a bracket is installed on one of the mounting frames, and a second driving member connected to the driving shaft is installed on the bracket.

[0016] The present invention has the following advantages: when the present invention is in use, the unprocessed coal is transported to the grinding machine for grinding operation through the first conveyor belt and the conveying mechanism, and the coal ground into coal powder is then entered into the boiler for combustion, which will not be described in detail here. During use, the first rotating shaft and the third rotating shaft are driven to rotate by the driving mechanism, so that the first driving wheel rotates, thereby driving the synchronous belt to transmit. During the transmission process, the synchronous belt cooperates with the limit blocks on the sliding belts at both ends of the first transmission belt and the limit grooves in the synchronous belt to drive the first conveyor belt to transmit, so that the first conveyor belt can transmit the unprocessed coal, and the driving mechanism can also drive the conveying mechanism at the same time. When the first conveyor belt transmits the unprocessed coal, the filter screen arranged on the first conveyor belt will screen the coal, and the small-sized coal will pass through the filter screen and fall onto the material guiding mechanism. The material guiding mechanism will transport the screened small-sized coal to the conveying mechanism, and the large-sized coal screened on the first conveyor belt Small-sized coal will continue to be transmitted along the first conveyor belt, and in the process of the first conveyor belt transmitting the coal, the swinging mechanism will drive the connecting mechanism to make the connecting mechanism swing left and right, so that the first conveyor belt connected to the connecting mechanism also swings left and right, so that the filter can better screen out small-sized coal, and the remaining large-sized coal will follow the first conveyor belt into the crushing area of ​​the crushing mechanism, and the crushing mechanism will cooperate with the baffle plate to complete the crushing operation of the large-sized coal during the left and right movement of the swinging mechanism. Finally, the crushed coal will fall from the first conveyor belt to the conveying mechanism, and the conveying mechanism will uniformly convey the coal to the grinding machine for grinding. The present invention can separate large-sized coal during the process of conveying coal on the conveyor belt, and can also crush large-sized coal, thereby improving the grinding efficiency of the coal by the grinding machine, and also enriching the function of the conveying device and improving the practicability of the conveying device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a structural schematic diagram of a coal conveying device for boiler combustion.

[0018] Figure 2 The present invention is a structural schematic diagram of a coal conveying device for boiler combustion without the conveying mechanism, driving mechanism and material guiding mechanism.

[0019] Figure 3 The present invention is a structural schematic diagram of a connecting mechanism in a coal conveying device for boiler combustion.

[0020] Figure 4 The present invention is a schematic structural diagram of the cooperation between a first conveyor belt and a synchronous belt in a coal conveying device for boiler combustion.

[0021] Figure 5 The present invention is a structural schematic diagram of a material guiding mechanism and a crushing mechanism in a coal conveying device for boiler combustion.

[0022] Figure 6 The present invention is a structural schematic diagram of a material guiding mechanism in a coal conveying device for boiler combustion.

[0023] Figure 7 The present invention is a schematic diagram of the structure of a crushing mechanism and a swinging mechanism in a coal conveying device for boiler combustion.

[0024] Figure 8 The present invention is a schematic diagram of the structure of a crushing frame in a coal conveying device for boiler combustion.

[0025] Fig. 9 for Figure 8 A partial enlarged view of point A in the middle.

[0026] Fig.10 The present invention is a structural schematic diagram of a conveying mechanism in a coal conveying device for boiler combustion.

[0027] Fig.11 The present invention is a schematic diagram of the structure of a driving mechanism in a coal conveying device for boiler combustion.

[0028] In the figure: 1, base; 2, mounting frame; 3, first rotating shaft; 4, second rotating shaft; 5, first driving wheel; 6, synchronous belt; 7, first conveyor belt; 8, filter screen; 9, sliding belt; 10, sliding groove; 11, limiting block; 12, limiting groove; 13, supporting mechanism; 1301, supporting frame; 1302, roller; 14, material guiding mechanism; 1401, fixing frame; 1402, first material guiding plate; 1403, second material guiding plate; 15, swinging mechanism; 1501, first driving member; 1502, transmission shaft; 1503, swinging rod; 1504, sliding column; 1505, swinging groove; 16, connecting mechanism; 1601, movable frame; 1602, limiting groove Groove; 1603, limit strip; 17, crushing mechanism; 1701, crushing frame; 1702, adjusting chamber; 1703, adjusting block; 1704, elastic member; 1705, crushing plate; 1706, connecting rod; 1707, material blocking plate; 18, fixed cylinder; 19, sliding rod; 20, conveying mechanism; 2001, third rotating shaft; 2002, fourth rotating shaft; 2003, second driving wheel; 2004, second conveyor belt; 21, driving mechanism; 2101, first transmission wheel; 2102, second transmission wheel; 2103, driving shaft; 2104, third transmission wheel; 2105, transmission belt; 2106, second driving member; 2107, bracket. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0030] See also Figure 1-11, a coal conveying device for boiler combustion, comprising a base 1, on which two symmetrically distributed mounting frames 2 are installed, on which a first rotating shaft 3 and a second rotating shaft 4 are rotatably arranged, on which the first rotating shaft 3 and the second rotating shaft 4 are both installed two symmetrically distributed first driving wheels 5, the two first driving wheels 5 are connected by a synchronous belt 6, a slide groove 10 is provided in the synchronous belt 6, the slide groove 10 is movably connected to a slide belt 9, a first conveyor belt 7 is installed between the slide belts 9 in the two synchronous belts 6, a filter screen 8 is provided on the first conveyor belt 7, and a limit block 11 is arranged on the slide belt 9 at intervals, and a limit groove 12 slidably connected to the limit block 11 is arranged on the inner wall of the slide groove 10 at intervals, during the transmission process of the synchronous belt 6, due to the cooperation between the limit block 11 and the limit groove 12, the slide belt 9 will also be synchronously driven to transmit, thereby driving the first conveyor belt 7 to transmit, in addition, the limit block 11 can also slide the belt 9 along the limit groove 12, and also includes: A material guiding mechanism 14, which is arranged on the mounting frame 2 and is used to convey the small-sized coal filtered by the filter screen 8; A crushing mechanism 17, which is arranged on the material guiding mechanism 14 and is used to crush the large-sized coal after being screened by the filter screen 8; A connecting mechanism 16, the two ends of which are rotatably connected to the first rotating shaft 3 and the second rotating shaft 4 respectively, and are also connected to the crushing mechanism 17, and are used to be movably connected to the first transmission belt 2105; A swing mechanism 15, wherein the swing mechanism 15 is disposed in the material guiding mechanism 14 and is used to drive the connecting mechanism 16 to swing; A conveying mechanism 20, which is arranged on the mounting frame 2 and is used to convey the small-sized coal screened by the filter screen 8; A driving mechanism 21, wherein the driving mechanism 21 is connected to the conveying mechanism 20, the first rotating shaft 3 and the second rotating shaft 4, and is used to drive the conveying mechanism 20, the first rotating shaft 3 and the second rotating shaft 4; The supporting mechanism 13 is connected to the mounting frame 2 and is used for supporting the synchronous belt 6 and the first conveyor belt 7 .

[0031] When in use, the unprocessed coal is transported to the mill for grinding operation through the first conveyor belt 7 and the conveying mechanism 20, and the coal ground into coal powder is then sent to the boiler for combustion. It will not be described in detail here. During use, the first rotating shaft 3 and the third rotating shaft 2001 are driven to rotate by the driving mechanism 21, so that the first driving wheel 5 rotates, thereby driving the synchronous belt 6 to transmit. During the transmission process, the synchronous belt 6 cooperates with the limit blocks 11 on the sliding belt 9 at both ends of the first transmission belt 2105 and the limit grooves 12 in the synchronous belt 6 to drive the first conveyor belt 7 to transmit, so that the first conveyor belt 7 can transmit the unprocessed coal, and the driving mechanism 21 can also drive the conveying mechanism 20 at the same time. When the first conveyor belt 7 transmits the unprocessed coal, the filter screen 8 arranged on the first conveyor belt 7 will screen the coal, and the small-sized coal will pass through the filter screen 8 and fall onto the guide mechanism 14. The guide mechanism 14 will transport the screened small-sized coal to the conveying mechanism 20, and the large-sized coal screened on the first conveyor belt 7 will fall onto the guide mechanism 14. The guide mechanism 14 will transport the screened small-sized coal to the conveying mechanism 20, and the large-sized coal screened on the first conveyor belt 7 will fall onto the guide mechanism 14. The coal will continue to be transported along the first conveyor belt 7. During the process of the first conveyor belt 7 transporting the coal, the swing mechanism 15 will drive the connecting mechanism 16 to make the connecting mechanism 16 swing left and right, so that the first conveyor belt 7 connected to the connecting mechanism 16 also swings left and right, so that the filter 8 can better screen out small-sized coal, and the remaining large-sized coal will follow the first conveyor belt 7 into the crushing area of ​​the crushing mechanism 17. Under the left and right movement of the swing mechanism 15, the crushing mechanism 17 cooperates with the baffle plate 1707 to complete the crushing operation of the large-sized coal during the left and right movement. Finally, the crushed coal will fall from the first conveyor belt 7 to the conveying mechanism 20, and the conveying mechanism 20 will uniformly transport the coal to the grinding machine for grinding. The present invention can separate large-sized coal during the process of conveying coal by the conveyor belt, and can also crush large-sized coal, thereby improving the grinding efficiency of the coal by the grinding machine, and also enriching the function of the conveying device and improving the practicability of the conveying device.

[0032] In one case of the present embodiment, the material guide mechanism 14 includes two fixing frames 1401 arranged on the mounting frame 2, the fixing frames 1401 are fixedly connected to a first material guide plate 1402 and a second material guide plate 1403, and the first material guide plate 1402 is located between the two mounting frames 2, and the second material guide plate 1403 is located between the base 1 and the first material guide plate 1402, wherein the number of second material guide plates 1403 is two and distributed below both sides of the first material guide plate 1402, the first material guide plate 1402 is a V-shaped structure, and the height of the first material guide plate 1402 decreases from the middle to both sides, and the second material guide plate 1403 is obliquely arranged, and the height of the second material guide plate 1403 decreases from one side close to the mounting frame 2 to the other side.

[0033] When the first conveyor belt 7 transports the unprocessed coal, the filter 8 arranged on the first conveyor belt 7 will screen the coal. The small-sized coal will pass through the filter 8 and fall onto the first guide plate 1402. The coal will roll along the inclined surface of the first guide plate 1402 to the second guide plate 1403, and then will roll along the second guide plate 1403 to the conveying mechanism 20 to continue conveying.

[0034] In one case of this embodiment, the crushing mechanism 17 includes a crushing frame 1701 slidably connected to the first guide plate 1402, and the crushing frame 1701 is slidably connected to the first guide plate 1402, and an elastic member 1704 is arranged in the middle of the crushing frame 1701. Preferably, the elastic member 1704 is arranged as a spring, and the elastic member 1704 is connected to the crushing plate 1705. Two connecting rods 1706 are installed on the mounting frame 2, and a material blocking plate 1707 is installed on the connecting rod 1706.

[0035] During the process of transporting unprocessed coal by the first conveyor belt 7, the filter 8 will screen the coal, and small-sized coal will pass through the filter 8, leaving large-sized coal on the first conveyor belt 7 and continuing to be transported along with the first conveyor belt 7. When the first conveyor belt 7 is transported between the crushing plate 1705 and the baffle plate 1707, due to the existence of the swing mechanism 15, the crushing frame 1701 will also continuously move left and right, so that the crushing plate 1705 will continuously approach the baffle plate 1707 on both sides. The large-sized coal can be crushed in cooperation with the baffle plate 1707 and the crushing plate 1705. Finally, the crushed coal will follow the first conveyor belt 7 to fall onto the conveying mechanism 20 and be uniformly transported to the grinding machine for grinding operation.

[0036] In one case of this embodiment, the elastic member 1704 includes an adjustment cavity 1702 opened in the middle of the crushing frame 1701, and an adjustment block 1703 connected to the crushing plate 1705 is slidably arranged in the adjustment cavity 1702, and a plurality of elastic members 1704 connected to the adjustment cavity 1702 are arranged at both ends of the adjustment block 1703.

[0037] It should be noted that the moving position of the adjustment block 1703 in the adjustment cavity 1702 is restricted. When the adjustment block 1703 moves to its movable end position in the adjustment cavity 1702, there is still a certain distance between the adjustment block 1703 and the end of the adjustment cavity 1702 to prevent the adjustment block 1703 from excessively squeezing the elastic member 1704.

[0038] When the crushing plate 1705 continuously approaches the baffle plates 1707 on both sides, the large-sized coal between the baffle plates 1707 and the crushing plate 1705 is squeezed and crushed, and the elastic member 1704 is arranged to cooperate with the adjusting block 1703 so that in the process that the crushing frame 1701 gradually approaches the baffle plates 1707, the large-sized coal between the baffle plates 1707 and the crushing plate 1705 will make the crushing plate 1705 unable to move at the beginning, and as the crushing frame 1701 moves, the elastic members 1704 on both sides of the adjusting block 1703 are respectively in a stretching and squeezing state, so that the crushing plate 1705 elastically squeezes the large-sized coal between the crushing plate 1705 and the baffle plates 1707, and gradually increases the squeezing force on the large-sized coal, and when the adjusting block 1703 moves to the limit position, the crushing frame 1701 will drive the crushing plate 1705 to move, and begin to fully crush the large-sized coal between the crushing plate 1705 and the baffle plates 1707.

[0039] In one case of this embodiment, two symmetrically distributed fixed cylinders 18 are installed on the mounting frame 2, the fixed cylinders 18 are slidably connected to the sliding rod 19, and the sliding rod 19 is fixedly connected to the crushing plate 1705. By arranging the fixed cylinders 18 and the sliding rod 19 on both sides of the crushing plate 1705 and between the mounting frame 2, the stability of the crushing plate 1705 during movement can be improved.

[0040] In one case of the present embodiment, the connecting mechanism 16 includes a movable frame 1601 connected to the crushing frame 1701, both ends of the movable frame 1601 are arc surfaces and fit with the first conveyor belt 7, the two ends of the movable frame 1601 are respectively rotatably connected to the first rotating shaft 3 and the second rotating shaft 4, and two symmetrically distributed limiting grooves 1602 are provided at both ends of the movable frame 1601, and the inner wall of the first conveyor belt 7 is provided with a limiting strip 1603 matching the limiting groove 1602.

[0041] Under the action of the limiting strip 1603 on the inner wall of the first conveyor belt 7, the first conveyor belt 7 is movably connected to the movable frame 1601, so that under the action of the swing mechanism 15, the movable frame 1601 will slide back and forth along the first rotating shaft 3 and the second rotating shaft 4, and the first conveyor belt 7 will swing left and right following the movable frame 1601. At the same time, the limiting blocks 11 on the sliding belts 9 at both ends of the first conveyor belt 7 will also slide back and forth along the limiting grooves 12, so that the filter screen 8 on the first conveyor belt 7 can better screen out small-sized coal for transportation.

[0042] In one case of this embodiment, the swing mechanism 15 includes a first driving member 1501 installed on the top of the first material guide plate 1402. Preferably, the first driving member 1501 is configured as a servo motor. The first driving member 1501 is connected to a transmission shaft 1502. A swing rod 1503 is installed on the transmission shaft 1502. A sliding column 1504 is installed at one end of the swing rod 1503 away from the transmission shaft 1502. The movable frame 1601 is provided with a swing groove 1505 that is slidably connected to the sliding column 1504.

[0043] When in use, the first driving member 1501 is started by an external controller, thereby driving the transmission shaft 1502 to rotate, the transmission shaft 1502 rotates to drive the swing rod 1503 to rotate, the swing rod 1503 rotates to drive the slide post 1504 to slide along the swing groove 1505 of the movable frame 1601, so that the movable frame 1601 can be driven to swing, that is, the connecting mechanism 16 can be driven to swing, and the crushing mechanism 17 can also be driven to swing. Due to the cooperation of the slide post 1504 and the swing groove 1505, when the slide post 1504 slides near the end of the swing groove 1505, the movement amplitude of the movable frame 1601 is The degree of movement is relatively large, and when the slide column 1504 slides near the middle of the swing groove 1505, the movement amplitude of the movable frame 1601 will become smaller, so that when the crushing plate 1705 moves from the middle of the two synchronous belts 6 to the baffle plate 1707, the movement amplitude of the crushing plate 1705 will gradually become smaller, so that when the crushing plate 1705 starts to move, large-sized coal can be quickly squeezed between the crushing plate 1705 and the baffle plate 1707, and in the later movement, the crushing plate 1705 moves slowly to crush the large-sized coal, so that the large-sized coal can be slowly fed and pressurized.

[0044] In one case of this embodiment, the supporting mechanism 13 includes a supporting frame 1301 fixedly connected to the mounting frame 2, and a plurality of spaced rollers 1302 are rotatably arranged on the supporting frame 1301. The rollers 1302 on the supporting frame 1301 are used to support the synchronous belt 6 and the first conveyor belt 7, so as to facilitate the first conveyor belt 7 to transport coal.

[0045] In one case of this embodiment, the conveying mechanism 20 includes a third rotating shaft 2001 and a fourth rotating shaft 2002 rotatably arranged on the mounting frame 2, and a second driving wheel 2003 is installed on the third rotating shaft 2001 and the fourth rotating shaft 2002, and the two second driving wheels 2003 are connected by a second conveyor belt 2004.

[0046] Under the action of the driving mechanism 21, the second driving wheel 2003 will also rotate synchronously, so that the second conveyor belt 2004 will be transported, and the material guiding mechanism 14 will transport the small-sized coal to the second conveyor belt 2004, and the remaining large-sized coal will fall onto the second conveyor belt 2004 after being crushed by the crushing mechanism 17. The coal will be uniformly transported to the grinding machine for grinding operation through the second conveyor belt 2004.

[0047] In one case of the present embodiment, the driving mechanism 21 includes a first transmission wheel 2101 installed at both ends of the first rotating shaft 3 and the second rotating shaft 4, and second transmission wheels 2102 are installed at both ends of the third rotating shaft 2001 and the fourth rotating shaft 2002. A driving shaft 2103 is installed on the mounting frame 2, and a third transmission wheel 2104 is installed on the driving shaft 2103. The first transmission wheel 2101, the second transmission wheel 2102 and the third transmission wheel 2104 are connected by a transmission belt 2105. A bracket 2107 is installed on one of the mounting frames 2, and a second driving member 2106 connected to the driving shaft 2103 is installed on the bracket 2107. Preferably, the second driving member 2106 is configured as a servo motor.

[0048] When in use, the second driving member 2106 is started through an external controller, and the driving shaft 2103 is rotated. The rotation of the driving shaft 2103 will drive the third transmission wheel 2104 to rotate, and then cooperate with the first transmission wheel 2101, the second transmission wheel 2102 and the transmission belt 2105 to simultaneously drive the first rotating shaft 3, the second rotating shaft 4, the third rotating shaft 2001 and the fourth rotating shaft 2002 to rotate, so that the first driving wheel 5 and the second driving wheel 2003 rotate, so that the second conveyor belt 2004 and the synchronous belt 6 start to work.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coal conveying device for boiler combustion, comprising a base, characterized in that: The base is provided with two symmetrically distributed mounting frames, the mounting frames are rotatably provided with a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are both provided with two symmetrically distributed first driving wheels, the two first driving wheels are connected through a synchronous belt transmission, a slide groove is provided in the synchronous belt, the slide groove is movably connected to the slide belt, a first conveyor belt is installed between the slide belts in the two synchronous belts, a filter screen is provided on the first conveyor belt, limit blocks are provided at intervals on the slide belt, and limit grooves slidably connected to the limit blocks are provided at intervals on the inner wall of the slide groove, and further comprising: A material guiding mechanism, which is arranged on the mounting frame and is used to convey the small-sized coal filtered by the filter screen; A crushing mechanism, which is arranged on the material guiding mechanism and is used to crush the large-sized coal after being screened by the filter; A connecting mechanism, the two ends of which are rotatably connected to the first rotating shaft and the second rotating shaft respectively, and are also connected to the crushing mechanism, and are used to be movably connected to the first transmission belt; A swing mechanism, which is arranged in the material guiding mechanism and is used to drive the connecting mechanism to swing; A conveying mechanism, which is arranged on the mounting frame and is used to convey the small-sized coal after being screened by the filter; A driving mechanism, the driving mechanism is connected to the conveying mechanism, the first rotating shaft and the second rotating shaft, and is used to drive the conveying mechanism, the first rotating shaft and the second rotating shaft; A supporting mechanism is connected to the mounting frame and is used to support the synchronous belt and the first conveyor belt.

2. A coal conveying device for boiler combustion according to claim 1, characterized in that: The material guide mechanism includes two fixing frames arranged on the mounting frame, the fixing frames are fixedly connected to the first material guide plate and the second material guide plate, and the first material guide plate is located between the two mounting frames, and the second material guide plate is located between the base and the first material guide plate. The first material guide plate is a V-shaped structure, and the height of the first material guide plate decreases from the middle to both sides, and the second material guide plate is obliquely arranged, and the height of the second material guide plate decreases from one side close to the mounting frame to the other side.

3. A coal conveying device for boiler combustion according to claim 2, characterized in that: The crushing mechanism includes a crushing frame slidably connected to the first material guide plate, and the crushing frame is slidably connected to the first material guide plate, an elastic member is arranged in the middle of the crushing frame, the elastic member is connected to the crushing plate, two connecting rods are installed on the mounting frame, and a material blocking plate is installed on the connecting rods.

4. A coal conveying device for boiler combustion according to claim 3, characterized in that: The elastic member comprises an adjusting cavity opened in the middle of the crushing frame, an adjusting block connected with the crushing plate is slidably arranged in the adjusting cavity, and a plurality of elastic members connected with the adjusting cavity are arranged at both ends of the adjusting block.

5. A coal conveying device for boiler combustion according to claim 3, characterized in that: Two symmetrically distributed fixing cylinders are mounted on the mounting frame. The fixing cylinders are slidably connected to the sliding rods, and the sliding rods are fixedly connected to the crushing plates.

6. A coal conveying device for boiler combustion according to claim 3, characterized in that: The connecting mechanism includes a movable frame connected to the crushing frame, both ends of the movable frame are arc surfaces and fit with the first conveyor belt, the two ends of the movable frame are respectively rotatably connected to the first rotating shaft and the second rotating shaft, and two symmetrically distributed limiting grooves are provided at both ends of the movable frame, and the inner wall of the first conveyor belt is provided with a limiting strip that matches the limiting groove.

7. A coal conveying device for boiler combustion according to claim 6, characterized in that: The swing mechanism includes a first driving member installed on the top of the first material guide plate, the first driving member is connected to a transmission shaft, a swing rod is installed on the transmission shaft, a sliding column is installed at one end of the swing rod away from the transmission shaft, and a swing groove slidably connected to the sliding column is opened on the movable frame.

8. The coal conveying device for boiler combustion according to claim 1, characterized in that: The support mechanism comprises a support frame fixedly connected to the mounting frame, and a plurality of rollers distributed at intervals are rotatably arranged on the support frame.

9. A coal conveying device for boiler combustion according to claim 1, characterized in that: The conveying mechanism comprises a third rotating shaft and a fourth rotating shaft rotatably arranged on the mounting frame, and second driving wheels are installed on the third rotating shaft and the fourth rotating shaft, and the two second driving wheels are connected through a second conveyor belt transmission.

10. A coal conveying device for boiler combustion according to claim 9, characterized in that: The driving mechanism includes a first transmission wheel installed at both ends of the first rotating shaft and the second rotating shaft, second transmission wheels are installed at both ends of the third rotating shaft and the fourth rotating shaft, a driving shaft is installed on the mounting frame, and a third transmission wheel is installed on the driving shaft. The first transmission wheel, the second transmission wheel and the third transmission wheel are connected by a transmission belt, and a bracket is installed on one of the mounting frames, and a second driving member connected to the driving shaft is installed on the bracket.

Images