Separated coal feeding system for raw coal bunker

Abstract

The invention relates to the technical field of fire coal supply, in particular to a raw coal bunker separated coal supply system which comprises a raw coal bunker, and a coal falling pipe is arranged at the bottom of the raw coal bunker; a material turning mechanism is arranged in the raw coal bunker; the material turning mechanism comprises a material turning plate and a lifting assembly controlling the material turning plate to ascend and descend. A side plate is rotationally connected to the material turning plate and connected with the material turning plate through a torsional spring. A buffering mechanism used for reducing the falling speed of raw coal is arranged in the coal falling pipe and is in transmission connection with the lifting assembly. According to the coal bunker, the function that the coal briquettes are blocked in the raw coal bunker and cannot enter the coal falling pipe during coal briquette supply is achieved, when the material overturning plate moves downwards, the side plates are extruded by the coal briquettes to be in a folded state, and when the material overturning plate moves upwards, due to the fact that the coal briquettes fall on the side plates and the side plates are in an unfolded state, the coal briquettes are overturned upwards. And coal briquettes are prevented from being blocked at the coal falling pipe, and stable feeding is carried out. The problem that the coal briquettes are blocked in the raw coal bunker and cannot enter the coal falling pipe is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal supply, and more specifically, to a coal bin batching coal feeding system for raw coal. Background Art

[0002] A coal feeder is a mechanical device used for continuously and evenly conveying coal or other bulk materials in industrial production, mainly for quantitatively and controllably conveying coal from a coal storage bin or a coal storage yard to the next process (such as a coal mill, a boiler, etc.). In order to improve the combustion quality and economy of raw coal, it is necessary to reasonably blend high-quality and low-quality coal types, which can reduce the fuel cost on the premise of meeting the combustion requirements and achieve the efficient utilization of resources. However, during the conveying process of coal lumps, due to the different volumes of coal lumps, blockages are likely to occur, which affects the blending ratio and supply speed.

[0003] For this reason, Chinese Patent No. CN222352362U with an authorization announcement number discloses a coal bin batching coal feeding device for raw coal. It interconnects the raw coal bins of adjacent bottom-layer coal mills through a screw conveyor, so as to realize the mutual blending combustion of coal types in the raw coal bins of two boilers, meet the requirements of stable combustion of the boiler during low peaks, peak demand of the boiler during high peaks, and stable combustion requirements in case of boiler accidents under existing conditions, and the conveying method through the screw conveyor can avoid the occurrence of blockage during the conveying of coal types.

[0004] However, during the supply process, since most coal bins are funnel-shaped, when a large amount of coal is supplied, the coal lumps move towards the coal dropping pipe under the action of gravity. Adjacent coal lumps squeeze each other, resulting in blockage at the connection between the coal dropping pipe and the coal bin. The coal lumps cannot enter the coal dropping pipe, which further affects the blending ratio and supply speed of the coal lumps and the combustion quality of the boiler. Summary of the Invention

[0005] Aiming at the above problems, a coal bin batching coal feeding system for raw coal is provided, which solves the problem of how to avoid blockage of coal lumps in the raw coal bin and inability to enter the coal dropping pipe through the raw coal bin, the turning mechanism, the buffer mechanism and the auxiliary control mechanism.

[0006] To solve the problems of the existing technology, the present invention provides a coal bin batching coal feeding system for raw coal, which includes a raw coal bin, and a coal dropping pipe is provided at the bottom of the raw coal bin; a turning mechanism is arranged in the raw coal bin; the turning mechanism includes a turning plate and a lifting assembly for controlling the lifting of the turning plate; a side plate is rotatably connected to the turning plate, and the side plate is connected to the turning plate through a torsion spring; a buffer mechanism for reducing the dropping speed of the raw coal is arranged in the coal dropping pipe, and the buffer mechanism is in transmission connection with the lifting assembly.

[0007] Preferably, the buffer mechanism includes a buffer plate, a control component, and a first transmission component; the buffer plate is rotatably arranged in the coal dropping pipe, and the buffer plate is connected to the inner wall of the coal dropping pipe through a torsion spring; the control component is used to control the rotation of the buffer plate; the control component is in transmission connection with the lifting component through the first transmission component.

[0008] Preferably, an auxiliary control mechanism is provided on the material turning plate, and the auxiliary control mechanism includes a reversing component and an induction component; the reversing component is used to switch the moving direction of the material turning plate, and the lifting component is in transmission connection with the material turning plate through the reversing component The induction component is used to sense the pressure received at the bottom of the material turning plate, and the induction component is in transmission connection with the reversing component.

[0009] Preferably, the lifting component includes a cross plate, a rotary driver, a transmission shaft, and a screw; the cross plate is connected to the raw coal bunker; the rotary driver is arranged on the cross plate, and the rotary driver is used to drive the transmission shaft to rotate; the transmission shaft and the screw are both rotatably arranged on the material turning plate, and the transmission shaft is in transmission connection with the screw through the reversing component; a threaded sleeve threadedly connected to the screw is provided on the cross plate.

[0010] Preferably, the reversing component includes a first bracket, a first belt pulley, a second belt pulley, a transmission belt, a first rotating gear, and a second rotating gear; the first bracket is arranged on the material turning plate; the first belt pulley is rotatably arranged on the first bracket, the second belt pulley is sleeved on the screw, and the transmission belt connects the first belt pulley and the second belt pulley; the first rotating gear is rotatably arranged on the material turning plate, the second rotating gear is sleeved on the screw, and the first rotating gear and the second rotating gear are meshed and connected; the transmission shaft is connected to the first belt pulley or the first rotating gear through a connecting component.

[0011] Preferably, the connecting component includes a connecting ring and a docking ring; the connecting ring is sleeved on the transmission shaft and can slide axially, and the induction component is in transmission connection with the connecting ring; there are two docking rings, and the two docking rings are respectively connected to the first belt pulley and the first rotating gear, and the axis of the docking ring is collinear with the axis of the connecting ring, and the connecting ring is located between the two docking rings; when the connecting ring abuts against the docking ring, it drives the docking ring to rotate synchronously.

[0012] Preferably, the induction component includes a connecting frame, a linear driver, a movable plate, and an extension rod; the connecting frame is slidably arranged on the first bracket, and the connecting frame is rotatably connected to the connecting ring; the linear driver is arranged on the first bracket, and the linear driver is used to drive the connecting frame to move up and down; the movable plate is slidably installed on the material turning plate, and a second elastic member connected to the material turning plate is provided on the movable plate; the extension rod is connected to the material turning plate, and a connecting plate is connected to the extension plate; pressure sensors are provided on both the movable plate and the connecting plate.

[0013] Preferably, the control component includes a movable strip and a connecting rod; a first guide rail is provided on the inner wall of the coal dropping pipe; the movable strip is slidably installed on the first guide rail; a connecting rod is rotatably arranged on the movable strip, and the connecting rod is hinged to the buffer plate.

[0014] Preferably, the first transmission component includes a mounting seat and a connecting rod; a second guide rail is provided on the inner wall of the coal dropping pipe; the mounting seat is slidably mounted on the second guide rail, the connecting rod is provided on the mounting seat, and the connecting rod is connected to the movable strip.

[0015] Preferably, a second transmission component is provided on the cross plate. The second transmission component includes a rotating shaft, a third belt pulley and a second transmission belt; the rotating shaft is rotatably provided on the cross plate, and the driving end of the rotating drive is in transmission connection with the rotating shaft; a second support is provided on the cross plate; there are two third belt pulleys, and the two third belt pulleys are respectively sleeved on the rotating shaft and the transmission shaft, and the third belt pulley is rotatably connected to the second support; the second transmission belt connects the two third belt pulleys.

[0016] The beneficial effects of the present invention compared with the prior art are: 1. The present invention realizes the function of preventing coal blocks from being blocked in the raw coal bunker and unable to enter the coal dropping pipe during coal block supply through the raw coal bunker, the turning mechanism, the buffer mechanism and the auxiliary control mechanism. During coal block supply, the lifting component is used to control the lifting of the turning plate, so that the turning plate reciprocates between the coal dropping pipe and the raw coal bunker. When the turning plate moves downward, the side plate is in a folded state under the extrusion of the coal block. When the turning plate moves upward, since the coal block falls on the side plate, the side plate is in an unfolded state, and then the coal block is turned upward. Avoid coal block blockage at the coal dropping pipe and provide stable feeding.

[0017] 2. The present invention realizes the function of slowing down the falling speed of coal blocks in the coal dropping pipe through the buffer plate, the first control component and the first transmission component, buffers the impact brought by the coal blocks, and enables the coal blocks to enter the coal feeder from the coal dropping pipe more stably, and then realizes the stable supply of coal blocks. The torsion spring connecting the buffer plate and the inner wall of the coal dropping pipe can prevent the buffer plate from rotating, so that the buffer plate tends to be in a horizontal state. When the coal block falls onto the buffer plate, the impact of the falling coal block causes the buffer plate to tilt, and then the coal block slides down from the buffer plate, reducing the falling speed of the coal block while transporting the coal block downward.

[0018] 3. The present invention realizes the function of switching the lifting direction of the buffer plate through the commutation component and the induction component. While the turning plate transmits the torque provided by the lifting component to the buffer mechanism, the reaction force provided by the buffer mechanism acts on the bottom of the turning plate. When the induction component senses that the resistance exceeds the threshold, it drives the commutation component to switch the moving direction of the turning plate. Excessive fragmentation of coal blocks will generate a large amount of pulverized coal, which is prone to spontaneous combustion and dust explosion risks, and at the same time increases the dust pollution during transportation and combustion. Maintaining the appropriate integrity of coal blocks helps to improve the storage and combustion safety. At the same time, the size uniformity of coal blocks directly affects the combustion stability. Over-fragmented pulverized coal is prone to incomplete combustion, reduced thermal efficiency, and even blockage of the grate or burner, increasing the equipment failure rate. Therefore, the combustion quality is ensured by controlling the downward pressure of the turning plate on the coal block. Brief Description of the Drawings

[0019] Figure 1 is a three-dimensional schematic diagram of a coal bin bin-feeding system of the present invention.

[0020] Figure 2 is a three-dimensional sectional schematic diagram of a coal bin bin-feeding system of the present invention.

[0021] Figure 3 is a sectional three-dimensional schematic diagram of a coal dropping pipe and a buffer mechanism of a coal bin bin-feeding system of the present invention.

[0022] Figure 4 is a three-dimensional schematic diagram of a turning plate during the folding process in a coal bin bin-feeding system of the present invention.

[0023] Figure 5 is a three-dimensional schematic diagram of a lifting assembly and a second transmission assembly of a coal bin bin-feeding system of the present invention.

[0024] Figure 6 is of the present invention Figure 5 partial enlarged schematic diagram at position A.

[0025] Figure 7 is a three-dimensional schematic diagram of an auxiliary control mechanism of a coal bin bin-feeding system of the present invention.

[0026] Figure 8 is a three-dimensional schematic diagram of a commutation assembly and an induction assembly of a coal bin bin-feeding system of the present invention.

[0027] Figure 9 is a three-dimensional exploded schematic diagram of a connection assembly of a coal bin bin-feeding system of the present invention.

[0028] Figure 10 is a three-dimensional exploded schematic diagram of a turning plate and a movable plate of a coal bin bin-feeding system of the present invention.

[0029] Figure 11 is a three-dimensional schematic diagram of a lifting assembly and an induction assembly of a coal bin bin-feeding system of the present invention.

[0030] Figure 12 is a three-dimensional schematic diagram of a buffer mechanism of a coal bin bin-feeding system of the present invention.

[0031] The numbers in the figure are: 1, raw coal bin; 11, coal drop pipe; 111, first guide rail; 112, second guide rail; 2, turning mechanism; 21, turning plate; 211, side plate; 22, lifting assembly; 221, cross plate; 2211, second bracket; 222, rotary drive; 223, transmission shaft; 224, screw; 225, threaded sleeve; 23, second transmission assembly; 231, rotating shaft; 232, third pulley; 233, second transmission belt; 234, bevel gear; 3, buffer mechanism; 31, buffer plate; 32, control assembly; 321, movable bar; 322, connecting rod; 33, first transmission assembly; 331, mounting seat ; 332, connecting rod; 4, auxiliary control mechanism; 41, reversing assembly; 411, first bracket; 412, first pulley; 413, second pulley; 414, transmission belt; 415, first rotating gear; 416, second rotating gear; 42, induction assembly; 421, connecting frame; 4211, guide rod; 4212, limit block; 422, linear drive; 423, movable plate; 4231, second elastic member; 424, extension rod; 4241, connecting plate; 43, connecting assembly; 431, connecting ring; 4311, connecting column; 4312, first elastic member; 432, docking ring; 4321, docking groove. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figures 1 - 3 : A raw coal bunker sub-bin coal feeding system, comprising a raw coal bunker 1, a coal dropping pipe 11 is provided at the bottom of the raw coal bunker 1; a turning mechanism 2 is provided in the raw coal bunker 1; the turning mechanism 2 comprises a turning plate 21 and a lifting assembly 22 for controlling the lifting of the turning plate 21; a side plate 211 is rotatably connected to the turning plate 21, and the side plate 211 is connected to the turning plate 21 through a torsion spring; a buffer mechanism 3 for reducing the falling speed of raw coal is provided in the coal dropping pipe 11, and the buffer mechanism 3 is transmission-connected to the lifting assembly 22.

[0034] The present invention realizes the function of preventing coal blocks from being blocked in the raw coal bin 1 and unable to enter the coal drop pipe 11 when supplying coal blocks through the raw coal bin 1, the turning mechanism 2 and the buffer mechanism 3. When supplying coal blocks, the turning plate 21 is controlled to rise and fall by the lifting assembly 22, so that the turning plate 21 moves back and forth between the coal drop pipe 11 and the raw coal bin 1. When the turning plate 21 moves down, the side plate 211 is squeezed by the coal blocks and is in a folded state. When the turning plate 21 moves up, the side plate 211 is in an unfolded state due to the coal blocks falling on the side plate 211, thereby turning the coal blocks upward. Avoid coal blocks from being blocked at the coal drop pipe 11, and provide stable feeding. Arc-shaped convex strips for limiting the rotation angle of the side plate 211 are provided on both sides of the turning plate 21, so that the side plate 211 can only be folded upward relative to the turning plate 21. A protective plate for protecting the parts located on the turning plate 21 is provided on the turning plate 21. The raw coal bin 1 is provided with a controller for human-computer interaction, and the lifting assembly 22 is electrically connected to the controller. The raw coal bin 1 is provided with at least two, and the coal dropping pipes 11 on the adjacent raw coal bins 1 are connected through a spiral conveying pipe, so as to blend and feed different types of coal. In the working state, the controller sends a signal to the lifting assembly 22, and the lifting assembly 22 controls the reciprocating lifting of the flipping plate 21. When the flipping plate 21 moves downward, the side plate 211 is folded under the extrusion, thereby preventing the side plate 211 from squeezing the coal blocks downward and causing the coal blocks to break. In the process of moving downward, the flipping plate 21 transmits the torque provided by the lifting assembly 22 to the buffer mechanism 3, so that the buffer mechanism 3 can stably buffer the coal blocks, reduce the falling speed of the coal blocks in the coal dropping pipe 11, and further improve the stability of the coal block supply. After the turning plate 21 enters the coal drop pipe 11 from the raw coal bin 1, the lifting assembly 22 controls the turning plate 21 to move upward. During the upward movement, the side plate 211 has a tendency to expand under the elastic force of the torsion spring, and as the coal blocks fall on the side plate 211, the side plate 211 will be further controlled to expand, and the coal blocks in the coal drop pipe 11 will be pushed upward by the expanded side plate 211 and the turning plate 21. Repeat the above actions, and the coal blocks are continuously turned over by the turning plate 21 and the side plate 211, so that the coal blocks can smoothly fall into the coal drop pipe 11 for stable feeding.

[0035] Reference Figures 1 - 3 : The buffer mechanism 3 includes a buffer plate 31, a control component 32 and a first transmission component 33; the buffer plate 31 is rotatably arranged in the coal drop pipe 11, and the buffer plate 31 is connected to the inner wall of the coal drop pipe 11 through a torsion spring; the control component 32 is used to control the rotation of the buffer plate 31; the control component 32 is transmission-connected to the lifting component 22 through the first transmission component 33.

[0036] The present invention realizes the function of slowing down the falling speed of coal blocks in the coal drop pipe 11 through the buffer plate 31, the control component 32 and the first transmission component 33, buffers the impact brought by the coal blocks, and enables the coal blocks to enter the coal feeder from the coal drop pipe 11 more stably, and then stably supply the coal blocks. The torsion spring connecting the buffer plate 31 and the inner wall of the coal drop pipe 11 can prevent the buffer plate 31 from rotating, so that the buffer plate 31 tends to be horizontal. When the coal block falls on the buffer plate 31, the impact of the falling coal block causes the buffer plate 31 to tilt, and then the coal block slides up and down from the buffer plate 31, transporting the coal block downward while reducing the falling speed of the coal block. At least two buffer plates 31 are provided, and multiple buffer plates 31 are arranged at intervals in the vertical direction, and adjacent buffer plates 31 are staggered on the inner wall of the coal drop pipe 11, so that after sliding from the upper buffer plate 31, it can fall on the lower buffer plate 31, and the coal block is accelerated and then decelerated again when falling, and graded buffering is performed to control the falling speed of the coal block. When the flipping plate 21 moves downward under the drive of the lifting assembly 22, the flipping plate 21 drives the control assembly 32 through the first transmission assembly 33, and then controls the rotation of the flipping plate 21 through the control assembly 32, thereby increasing the inclination angle of the flipping plate 21, so that the coal blocks trapped on the flipping plate 21 can fall smoothly, further avoiding blockage by the coal blocks.

[0037] Reference Figure 3 and Figure 4 : The flipping plate 21 is provided with an auxiliary control mechanism 4, which includes a reversing component 41 and a sensing component 42; the reversing component 41 is used to switch the moving direction of the flipping plate 21, and the lifting component 22 is connected to the flipping plate 21 through the reversing component 41. The sensing component 42 is used to sense the pressure on the bottom of the turning plate 21 , and the sensing component 42 is transmission-connected to the reversing component 41 .

[0038] The present invention realizes the function of switching the lifting direction of the buffer plate 31 through the reversing component 41 and the sensing component 42. While the torque provided by the lifting component 22 is transmitted to the buffer mechanism 3 through the flipping plate 21, the reaction force provided by the buffer mechanism 3 acts on the bottom of the flipping plate 21. When the sensing component 42 senses that the resistance exceeds the threshold, it drives the reversing component 41, thereby switching the moving direction of the flipping plate 21. When the lifting component 22 drives the flipping plate 21 to move downward, the buffer mechanism 3 is driven by the torque transmitted by the flipping plate 21, and the buffer plate 31 is controlled to rotate downward, and the buffer plate 31 rotates to the limit position when it abuts against the inner wall of the coal drop pipe 11. At this time, the flipping plate 21 cannot continue to move downward and will be subjected to a large reaction force. Then the sensing component 42 changes the moving direction of the flipping plate 21 through the transmission of the reversing component 41. When the flipping plate 21 moves up to the specified position, the sensing component 42 drives the reversing component 41 again to switch the moving direction of the flipping plate 21. During the lifting and lowering process of the flipping plate 21, the downward movement stroke of the flipping plate 21 is adjusted in real time according to the resistance at the bottom of the flipping plate 21, so that the coal blocks will not be over-pressed while being flipped. Excessive crushing of coal blocks will generate a large amount of coal powder, which is easy to cause the risk of spontaneous combustion and dust explosion, and increase dust pollution during transportation and combustion. Maintaining moderate integrity of coal blocks helps to improve storage and combustion safety. At the same time, the uniformity of coal block size directly affects combustion stability. Over-crushed coal powder can easily lead to incomplete combustion, reduced thermal efficiency, and even blockage of the grate or burner, increasing the failure rate of equipment. The combustion quality can be guaranteed by controlling the downward pressure of the flipping plate 21 on the coal blocks.

[0039] Reference Figure 2 , Figure 5 and Figure 6 : The lifting assembly 22 includes a transverse plate 221, a rotary driver 222, a transmission shaft 223 and a screw 224; the transverse plate 221 is connected to the raw coal bin 1; the rotary driver 222 is arranged on the transverse plate 221, and the rotary driver 222 is used to drive the transmission shaft 223 to rotate; the transmission shaft 223 and the screw 224 are both rotatably arranged on the turning plate 21, and the transmission shaft 223 is transmission-connected to the screw 224 through the reversing assembly 41; a threaded sleeve 225 threadedly connected to the screw 224 is provided on the transverse plate 221.

[0040] The present invention realizes the function of driving the turning plate 21 to lift through the cross plate 221, the rotary drive 222, the transmission shaft 223, the screw 224 and the threaded sleeve 225. At the same time, with the setting of the commutation assembly 41, it can control the automatic commutation of the turning plate 21 during the movement of the turning plate 21. A protective shell for protecting the parts located on the cross plate 221 is provided on the cross plate 221, and the protective shell is not shown in the figure. The rotary drive 222 is preferably a servo motor, and the rotary drive 222 is electrically connected to the controller. The transmission shaft 223 is slidably matched with the cross plate 221. In the working state, the controller sends a signal to the rotary drive 222. After receiving the signal, the rotary drive 222 drives the transmission shaft 223 to rotate. The transmission shaft 223 drives the screw 224 to rotate through the commutation assembly 41. Since the threaded sleeve 225 is fixedly connected to the cross plate 221, the screw 224 will lift relative to the cross plate 221 when rotating, and then drive the turning plate 21 to make a lifting motion, and the turning plate 21 will drive the transmission shaft 223 to lift synchronously when moving.

[0041] Refer to Figure 4 , Figure 7 and Figure 8 : The commutation assembly 41 includes a first bracket 411, a first pulley 412, a second pulley 413, a transmission belt 414, a first rotating gear 415 and a second rotating gear 416; the first bracket 411 is arranged on the turning plate 21; the first pulley 412 is rotatably arranged on the first bracket 411, the second pulley 413 is sleeved on the screw 224, and the transmission belt 414 connects the first pulley 412 and the second pulley 413; the first rotating gear 415 is rotatably arranged on the turning plate 21, the second rotating gear 416 is sleeved on the screw 224, and the first rotating gear 415 and the second rotating gear 416 are meshed and connected; the transmission shaft 223 is connected to the first pulley 412 or the first rotating gear 415 through the connecting assembly 43.

[0042] The present invention realizes the function of switching the rotation direction of the screw 224 through the first bracket 411, the first pulley 412, the second pulley 413, the transmission belt 414, the first rotating gear 415 and the second rotating gear 416. In the working state, the controller sends a signal to the rotation driver 222, the rotation driver 222 drives the transmission shaft 223 to rotate, the transmission shaft 223 drives the first pulley 412 to rotate through the connecting component 43, the first pulley 412 drives the screw 224 to rotate in the forward direction through the second pulley 413 and the transmission belt 414, and then drives the flipping plate 21 to move downward. When the pressure on the bottom of the flipping plate 21 exceeds the threshold, the sensing component 42 controls the connection component 43 to switch the connection, the connection component 43 connects the transmission shaft 223 and the first rotating gear 415, and the connection between the first pulley 412 and the transmission shaft 223 is disconnected. Then the transmission shaft 223 drives the first rotating gear 415 to rotate, and the first rotating gear 415 drives the second rotating gear 416 meshing with it to rotate in the opposite direction, and then drives the screw 224 to rotate through the second rotating gear 416. At this time, the direction of the screw 224 changes, and then the reverse rotation of the screw 224 controls the upward movement of the flipping plate 21.

[0043] Reference Figures 7 - 9 : The connecting component 43 includes a connecting ring 431 and a docking ring 432; the connecting ring 431 can be axially slidably sleeved on the transmission shaft 223, and the sensing component 42 is transmission-connected to the connecting ring 431; there are two docking rings 432, and the two docking rings 432 are respectively connected to the first pulley 412 and the first rotating gear 415, and the axis of the docking ring 432 is colinear with the axis of the connecting ring 431, and the connecting ring 431 is located between the two docking rings 432; when the connecting ring 431 abuts against the docking ring 432, the docking ring 432 is driven to rotate synchronously.

[0044] The present invention realizes the function of controlling the connection between the transmission shaft 223 and the first belt pulley 412 or the first rotating gear 415 through the connecting ring 431 and the docking ring 432. Connecting columns 4311 and first elastic members 4312 are provided on both sides of the connecting ring 431, and a receiving groove for receiving the connecting columns 4311 is formed in the connecting ring 431. Two ends of the first elastic member 4312 are respectively connected to the connecting column 4311 and the connecting ring 431. A docking groove 4321 for cooperating with the connecting column 4311 is formed in the docking ring 432. In the working state, the connecting ring 431 is controlled to move up and down along the axis of the transmission shaft 223 through the sensing assembly 42, so as to control the connecting ring 431 to abut against the upper and lower docking rings 432. When the sensing assembly 42 controls the connecting ring 431 to abut against the upper docking ring 432, the transmission shaft 223 drives the connecting ring 431 to rotate, and the connecting ring 431 drives the connecting column 4311 to rotate. When the connecting column 4311 is aligned with the docking groove 4321, the connecting column 4311 is inserted and cooperated with the docking groove 4321 under the elastic force of the first elastic member 4312, and the connecting ring 431 drives the docking ring 432 to rotate through the cooperation between the connecting column 4311 and the docking groove 4321. Furthermore, the screw 224 is driven to rotate through the cooperation of the first belt pulley 412, the second belt pulley 413 and the transmission belt 414, so as to control the lowering of the material turning plate 21.

[0045] Referring to Figure 7 , Figure 8 , Figure 10 and Figure 11 : The sensing assembly 42 includes a connecting frame 421, a linear driver 422, a movable plate 423 and an extension rod 424; the connecting frame 421 is slidably arranged on the first support 411, and the connecting frame 421 is rotatably connected to the connecting ring 431; the linear driver 422 is arranged on the first support 411, and the linear driver 422 is used to drive the connecting frame 421 to move up and down; the movable plate 423 is slidably installed on the material turning plate 21, and a second elastic member 4231 connected to the material turning plate 21 is arranged on the movable plate 423; the extension rod 424 is connected to the material turning plate 21, and a connecting plate 4241 is connected to the extension plate; pressure sensors are arranged on both the movable plate 423 and the connecting plate 4241.

[0046] The present invention realizes the function of controlling the abutment of the connecting ring 431 and the docking ring 432 through the connecting frame 421, the linear driver 422, the movable plate 423 and the extension rod 424. During the downward movement of the tipping plate 21, when the movable plate 423 is subjected to pressure, the second elastic member 4231 is compressed under the pressure. If the movable plate 423 does not receive a large acting force brought by the coal block during the downward movement of the tipping plate 21, when the plate on the tipping plate 21 contacts the movable bar 321, it will push the first transmission assembly 33, and then drive the control assembly 32 through the first transmission assembly 33. The control assembly 32 controls the rotation of the buffer plate 31. A guide rod 4211 slidably matched with the first bracket 411 is provided on the connecting frame 421, and a limit block 4212 is provided at one end of the guide rod 4211 away from the connecting frame 421. The movement of the connecting frame 421 is guided and supported through the cooperation of the guide rod 4211 and the limit block 4212. If a coal block clogging occurs, the movable plate 423 is subjected to a large pressure. When the movable plate 423 abuts against the tipping plate 21, the pressure sensor on the movable plate 423 senses the pressure and feeds back a signal to the controller. The controller sends a signal to the linear driver 422, and the linear driver 422 drives the connecting frame 421 to move downward, and then the connecting ring 431 moves downward. By driving the first rotating gear 415 to rotate through the connecting ring 431 and the docking ring 432, the first rotating gear 415 drives the second rotating gear 416 meshed with it to rotate in the opposite direction, thereby changing the rotation direction of the screw rod 224. Then the screw rod 224 rotates in the reverse direction to drive the tipping plate 21 to move upward. The tipping plate 21 drives the extension rod 424 to move upward. When the connecting plate 4241 on the extension rod 424 contacts the cross plate 221, it hinders the upward movement of the tipping plate 21. At the same time, the pressure sensor on the connecting plate 4241 senses the pressure and feeds back a signal to the controller. The controller sends a signal to the linear driver 422, and drives the connecting frame 421 and the connecting ring 431 to move upward through the linear driver 422, and changes the movement direction of the tipping plate 21 again.

[0047] Refer to Figure 3 and Figure 12 : The control assembly 32 includes a movable bar 321 and a connecting rod 322; a first guide rail 111 is provided on the inner wall of the coal dropping pipe 11; the movable bar 321 is slidably installed on the first guide rail 111; a connecting rod 322 is rotatably provided on the movable bar 321, and the connecting rod 322 is hinged to the buffer plate 31.

[0048] The present invention realizes the function of controlling the rotation of the buffer plate 31 through the movable bar 321 and the connecting rod 322. During the downward movement of the tipping plate 21, when the movable plate 423 on the tipping plate 21 pushes the first transmission assembly 33, the first transmission assembly 33 drives the movable bar 321 to slide along the first guide rail 111. The connecting rod 322 on the movable bar 321 pulls the buffer plate 31, thereby controlling the rotation of the buffer plate 31, so that the coal block on the buffer plate 31 can fall smoothly and avoid the retention of the coal block on the buffer plate 31.

[0049] Refer to Figure 3 and Figure 12 : The first transmission component 33 includes a mounting seat 331 and a connecting rod 332; a second guide rail 112 is provided on the inner wall of the coal dropping pipe 11; the mounting seat 331 is slidably mounted on the second guide rail 112, the connecting rod 332 is provided on the mounting seat 331, and the connecting rod 332 is connected to the movable strip 321.

[0050] The present invention realizes the function of driving the movable strip 321 to move downward when the turning plate 21 moves downward through the mounting seat 331 and the connecting rod 332. When the movable plate 423 on the turning plate 21 contacts the connecting rod 332, it pushes the connecting rod 332 to move downward, and the connecting rod 332 drives the movable strip 321 to move downward, and then pulls the buffer plate 31 through the connecting rod 322 on the movable strip 321. During the downward movement, the connecting rod 332 is supported and guided by the cooperation of the mounting seat 331 and the second guide rail 112, so that the connecting rod 332 can move stably along the specified path. When the turning plate 21 moves upward, the buffer plate 31 is reset under the elastic force of the torsion spring, and at the same time, the movable strip 321 and the connecting rod 332 are pulled back through the connecting rod 322.

[0051] Refer to Figure 2 , Figure 5 and Figure 6 : A second transmission component 23 is provided on the cross plate 221. The second transmission component 23 includes a rotating shaft 231, a third pulley 232 and a second transmission belt 414233; the rotating shaft 231 is rotatably provided on the cross plate 221, and the driving end of the rotary driver 222 is in transmission connection with the rotating shaft 231; a second bracket 2211 is provided on the cross plate 221; there are two third pulleys 232, and the two third pulleys 232 are respectively sleeved on the rotating shaft 231 and the transmission shaft 223, and the third pulley 232 is rotatably connected to the second bracket 2211; the second transmission belt 414233 connects the two third pulleys 232.

[0052] The present invention realizes the function of driving the transmission shaft 223 to rotate through the rotary driver 222 through the rotating shaft 231, the third pulley 232 and the second transmission belt 414233. A bevel gear 234 is sleeved on both the driving end of the rotary driver 222 and the rotating shaft 231, and the two bevel gears 234 are meshed and connected. When the rotary driver 222 is started, the rotary driver 222 drives the rotating shaft 231 to rotate through the bevel gear 234, and the rotating shaft 231 drives the transmission shaft 223 to rotate through the third pulley 232 and the second transmission belt 414233. And the third pulley 232 is supported by the second bracket 2211, so that the third pulley 232 does not affect the lifting of the transmission shaft 223 when driving the transmission shaft 223 to rotate. So that the transmission shaft 223 can move synchronously with the turning plate 21.

[0053] The above embodiments merely represent one or several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A coal bunker bin coal feeding system, including a raw coal bunker (1), and a coal dropping pipe (11) is provided at the bottom of the raw coal bunker (1); It is characterized in that A turning mechanism (2) is provided inside the raw coal bunker (1); The turning mechanism (2) includes a turning plate (21) and a lifting assembly (22) for controlling the lifting of the turning plate (21); A side plate (211) is rotatably connected to the turning plate (21), and the side plate (211) is connected to the turning plate (21) through a torsion spring; A buffer mechanism (3) for reducing the falling speed of the raw coal is provided inside the coal dropping pipe (11), and the buffer mechanism (3) is in transmission connection with the lifting assembly (22).

2. The coal bin coal feeding system for separated bins of raw coal according to claim 1, characterized in that The buffer mechanism (3) includes a buffer plate (31), a control assembly (32) and a first transmission assembly (33); The buffer plate (31) is rotatably arranged inside the coal dropping pipe (11), and the buffer plate (31) is connected to the inner wall of the coal dropping pipe (11) through a torsion spring; The control assembly (32) is used to control the rotation of the buffer plate (31); The control assembly (32) is in transmission connection with the lifting assembly (22) through the first transmission assembly (33).

3. The coal bunker bunker coal feeding system according to claim 1, characterized in that, An auxiliary control mechanism (4) is provided on the turning plate (21), and the auxiliary control mechanism (4) includes a commutation assembly (41) and an induction assembly (42); The commutation assembly (41) is used to switch the moving direction of the turning plate (21), and the lifting assembly (22) is in transmission connection with the turning plate (21) through the commutation assembly (41) The induction assembly (42) is used to sense the pressure received at the bottom of the turning plate (21), and the induction assembly (42) is in transmission connection with the commutation assembly (41).

4. The coal bin bunker coal feeding system according to claim 3, characterized in that, The lifting assembly (22) includes a cross plate (221), a rotary driver (222), a transmission shaft (223) and a screw (224); The cross plate (221) is connected to the raw coal bunker (1); The rotary driver (222) is arranged on the cross plate (221), and the rotary driver (222) is used to drive the transmission shaft (223) to rotate; Both the transmission shaft (223) and the screw (224) are rotatably arranged on the turning plate (21), and the transmission shaft (223) is in transmission connection with the screw (224) through the commutation assembly (41); A threaded sleeve (225) threadedly connected to the screw (224) is provided on the cross plate (221).

5. The coal bin bunker coal feeding system according to claim 3, characterized in that, The commutation assembly (41) includes a first bracket (411), a first belt pulley (412), a second belt pulley (413), a transmission belt (414), a first rotating gear (415) and a second rotating gear (416); The first bracket (411) is arranged on the turning plate (21); The first belt pulley (412) is rotatably arranged on the first bracket (411), the second belt pulley (413) is sleeved on the screw (224), and the transmission belt (414) connects the first belt pulley (412) and the second belt pulley (413); The first rotating gear (415) is rotatably arranged on the turning plate (21), the second rotating gear (416) is sleeved on the screw (224), and the first rotating gear (415) and the second rotating gear (416) are meshed and connected; The transmission shaft (223) is connected to the first belt pulley (412) or the first rotating gear (415) through a connection assembly (43).

6. The coal bin bunker coal feeding system according to claim 5, characterized in that The connecting component (43) includes a connecting ring (431) and a docking ring (432); The connecting ring (431) is sleeved on the transmission shaft (223) so as to be axially slidable, and the sensing component (42) is in transmission connection with the connecting ring (431); There are two docking rings (432), the two docking rings (432) are respectively connected with the first pulley (412) and the first rotating gear (415), and the axis of the docking ring (432) is collinear with the axis of the connecting ring (431), and the connecting ring (431) is located between the two docking rings (432); When the connecting ring (431) abuts against the docking ring (432), it drives the docking ring (432) to rotate synchronously.

7. The coal bin feeding system for raw coal bins according to claim 6, characterized in that, The sensing component (42) includes a connecting frame (421), a linear driver (422), a movable plate (423) and an extension rod (424); The connecting frame (421) is slidably arranged on the first bracket (411), and the connecting frame (421) is rotationally connected with the connecting ring (431); The linear driver (422) is arranged on the first bracket (411), and the linear driver (422) is used to drive the connecting frame (421) to move up and down; The movable plate (423) is slidably mounted on the turning plate (21), and a second elastic member (4231) connected to the turning plate (21) is provided on the movable plate (423); The extension rod (424) is connected to the turning plate (21), and a connecting plate (4241) is connected to the extension plate; Pressure sensors are provided on both the movable plate (423) and the connecting plate (4241).

8. The coal bin bunker coal feeding system according to claim 2, wherein The control component (32) includes a movable bar (321) and a connecting rod (322); A first guide rail (111) is provided on the inner wall of the coal dropping pipe (11); The movable bar (321) is slidably mounted on the first guide rail (111); A connecting rod (322) is rotatably provided on the movable bar (321), and the connecting rod (322) is hinged to the buffer plate (31).

9. The coal bunker bin coal feeding system according to claim 8, characterized in that, The first transmission component (33) includes a mounting seat (331) and a connecting rod (332); A second guide rail (112) is provided on the inner wall of the coal dropping pipe (11); The mounting seat (331) is slidably mounted on the second guide rail (112), the connecting rod (332) is provided on the mounting seat (331), and the connecting rod (332) is connected to the movable bar (321).

10. The coal bunker bunker coal feeding system according to claim 4, characterized in that, A second transmission component (23) is provided on the cross plate (221), and the second transmission component (23) includes a rotating shaft (231), a third pulley (232) and a second transmission belt (414)(233); The rotating shaft (231) is rotatably provided on the cross plate (221), and the driving end of the rotating driver (222) is in transmission connection with the rotating shaft (231); A second bracket (2211) is provided on the cross plate (221); There are two third pulleys (232), the two third pulleys (232) are respectively sleeved on the rotating shaft (231) and the transmission shaft (223), and the third pulley (232) is rotationally connected to the second bracket (2211); The second transmission belt (414)(233) connects the two third pulleys (232).

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