Multi-angle coal bunker fluidization unblocking system

Abstract

The invention discloses a multi-angle coal bunker fluidization unblocking system which is provided with a rotation blocking type level gage and a plurality of spray heads surrounding a coal bunker, when the rotation blocking type level gage detects that coal blocks are blocked, the corresponding spray heads can receive external airflow, so that the external airflow enters the coal bunker through an air injection port, the opening of the air injection port faces downwards, and the coal blocks are blocked by the air injection port. The gas flow can be stably discharged from the gas injection port after being blocked by the inclined baffle, on one hand, coal briquettes are blown downwards, and on the other hand, mud and powder between the coal briquettes are swept, so that the blocked part is in a fluidized state, that is, the coal briquettes flow like fluid under the action of flowing gas and particulate matters, and the purpose of removing the blockage is further achieved. The multiple nozzles surrounding the coal bunker can push coal briquettes at the same height at the same time, so that the coal briquettes in more areas are in a fluidized state and synchronously move downwards, the better blockage clearing effect is achieved, a pulse type electric valve is further arranged, airflow impacts the coal briquettes at the blocked position in a pulse mode, and the blockage clearing effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal bunker blockage clearing, and in particular to a multi-angle coal bunker fluidized blockage clearing system. Background Art

[0002] Coal bunker refers to a storage bin for granular materials such as coal blocks or coal slime in a thermal power plant. It is mainly used as an intermediate storage device for directly supplying coal for boiler combustion. In actual production, the fuel coal stored in other places is first transported to the coal bunker, and the coal in the coal bunker then falls into the belt coal feeder and other devices by its own gravity. However, during the discharge process of the existing coal bunker, serious coal bunker sticking and coal blocking often occur, causing coal blocks or coal slime to block and prevent smooth discharge. In actual processing, the outer wall of the coal bunker is hit manually or by devices;

[0003] Manual or device knocking on the coal bunker is not only noisy but also inefficient, and often cannot fully and quickly solve the problem of coal blockage. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a multi-angle coal bunker fluidization clearing system.

[0005] The present invention provides a multi-angle coal bunker fluidization clearing system, comprising:

[0006] A coal bunker, wherein the coal bunker has a first axis at its center, and the extending direction of the first axis is a first direction;

[0007] The gas injection mechanism comprises a main gas pipe arranged at one side of the coal bunker, one end of the main gas pipe is connected to the gas source, the coal bunker is provided with a plurality of groups of secondary gas paths arranged along a first direction, each of the secondary gas paths comprises two symmetrically arranged second branch gas channels, one end of the two second branch gas channels is connected to the main gas pipe, and each of the second branch gas channels is provided with a pulse type electric valve near the end of the main gas pipe;

[0008] A plurality of nozzle mechanisms, corresponding to each of the secondary gas paths, respectively, including a plurality of nozzles surrounding the first axis and penetrating the coal bunker, the nozzles all having a second axis, the extension direction of the second axis being perpendicular to the first direction, the nozzles located at the inner end of the coal bunker are all provided with an inclined baffle, the inclined baffle and the inner wall of the coal bunker have a first angle opening downward, the bottom end of the nozzle is located between the inclined baffle and the inner wall of the coal bunker and is provided with an air injection port, the opening direction of the air injection port is perpendicular to the normal direction of the inclined baffle;

[0009] A plurality of rotary paddle level meters are arranged on the coal bunker and correspond to the secondary gas paths respectively, and are used to monitor the position of materials in the coal bunker.

[0010] According to the technical solution provided in the embodiment of the present application, the nozzle mechanism further includes a plurality of intermediate tubes connected to the ends of the nozzles away from the first axis, an adjustment disk rotating around the third axis is provided in the middle of the intermediate tube, the extension direction of the third axis is the first direction, and the arc surface of the adjustment disk is adapted to the inner surface of the intermediate tube;

[0011] The blockage clearing system also includes a plurality of driving mechanisms, each of which corresponds to each of the secondary air paths, and each of which drives the corresponding nozzle to rotate around the second axis and / or drives the corresponding adjustment disc to rotate around the third axis.

[0012] According to the technical solution provided in the embodiment of the present application, the nozzle can be rotatably installed on one end of the intermediate tube, the other end of the intermediate tube is connected to the second branch airway, a rotatable rotating shaft is arranged through the middle of the intermediate tube, the rotating shaft has the third axis, and the adjusting disc is clamped in the middle of the rotating shaft.

[0013] According to the technical solution provided in the embodiment of the present application, each of the nozzles is provided with a driven bevel gear on the outer wall outside the coal bin, and each of the top ends of the rotating shafts passing through the intermediate tube is provided with a driven spur gear;

[0014] The driving mechanism includes a driving ring arranged between each of the driven bevel gears and each of the driven spur gears, the driving ring having an inner ring surface and an outer ring surface, the driving ring is provided with a meshing area corresponding to each of the nozzles, each of the meshing areas includes a forward rotation area, an airflow adjustment area and a reverse rotation area, second transmission teeth are provided on the inner ring surfaces in the forward rotation area and the reverse rotation area, each of the second transmission teeth is meshed with the corresponding driven bevel gear, and first transmission teeth are provided on the outer ring surface in the airflow adjustment area, each of the first transmission teeth is meshed with the corresponding driven spur gear.

[0015] According to the technical solution provided in the embodiment of the present application, the driving mechanism also includes a transmission outer gear ring mounted outside the coal bin, the driving ring is arranged on the bottom surface of the transmission outer gear ring, a motor is provided at a position on the outer wall of the coal bin corresponding to the transmission outer gear ring, a driving gear is mounted on the output shaft end of the motor, and the driving gear is meshed and transmission-connected with the transmission outer gear ring.

[0016] According to the technical solution provided in the embodiment of the present application, a first support seat is provided on the outer wall of the coal bin corresponding to each of the nozzle positions, a thrust ball bearing is embedded in the first support seat, and the other end face of the thrust ball bearing is embedded in the driven bevel gear end.

[0017] According to the technical solution provided in the embodiment of the present application, a plurality of protective mechanisms are provided on the coal bin, each of which is located above each of the rotary paddle level meters, and is used to prevent the material from colliding with the detection rod of the rotary paddle level meter when falling.

[0018] According to the technical solution provided in the embodiment of the present application, an airflow transfer box is provided at a position above each of the rotary-bar level meters corresponding to the coal bin, an air distribution plate is provided in the middle of the airflow transfer box, and a third branch air duct connected to the main air pipe is provided on one side of the air distribution plate. A plurality of engaging strips arranged along the first direction are provided at the top of the airflow transfer box away from the third branch air duct end, a strip-shaped air outlet channel is provided in the middle of the engaging strip, and two of the insert pipes are symmetrically provided at the bottom of the airflow transfer box away from the third branch air duct end, and side air outlet holes are evenly provided on the sides of the insert pipes away from each other.

[0019] According to the technical solution provided in the embodiment of the present application, the second branch airway includes a plurality of airway branch structures connected to the nozzle, and connecting pipes connecting each of the airway branch structures, and each of the airway branch structures is used for the installation of the intermediate pipe and the nozzle.

[0020] According to the technical solution provided in the embodiment of the present application, the airway branch structure includes two straight tubes and a three-way tube, the two ends of the three-way tube are rotatably connected to the two straight tubes respectively, and the remaining end of the three-way tube is detachably connected to the middle tube.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. A rotary paddle level meter and multiple nozzles surrounding the coal bunker are provided. When the rotary paddle level meter detects that the coal is blocked, the corresponding nozzle will receive the external airflow, so that the external airflow enters the coal bunker through the gas injection port. The opening of the gas injection port is set to face downward, and the airflow can be stably discharged from the gas injection port after being blocked by the inclined baffle. On the one hand, the coal is blown downward, and on the other hand, the muddy and powdery materials between the coal blocks are swept away, so that the blocked part forms a fluidized state, that is, the coal flows like a fluid under the action of the flowing gas and particles, thereby achieving the purpose of clearing the blockage. In addition, the multiple nozzles surrounding the coal bunker can simultaneously push the coal blocks at the same height, so that the coal blocks in more areas form a fluidized state and move downward synchronously, achieving a better clearing effect. Furthermore, a pulse electric valve is provided, so that the airflow impacts the coal blocks at the blocked part in a pulse manner, thereby improving the clearing effect.

[0023] 2. On the basis of nozzle blockage removal, the driving mechanism can drive the nozzles at the same height to rotate synchronously, so that the gas injection ports facing downward swing to the same side. Compared with directly pushing the coal blocks downward, the rotating nozzles can push part of the coal blocks to move clockwise or counterclockwise. On the basis of the original downward flow, the coal blocks in the fluidized state have a downward movement trend. During actual blockage removal, if the resistance of the coal blocks in the fluidized state driven by the airflow to move downward is too large, and the blockage problem is not solved, the nozzles can be rotated to adjust the flow angle of the coal blocks, so as to achieve multi-angle driving of the coal blocks to flow, avoid the situation where the resistance of the single-direction movement trend is too large, resulting in the blockage that cannot be cleared, and achieve effective blockage removal;

[0024] 3. An intermediate tube, an adjusting disc and a rotating shaft are also provided. The adjusting disc is driven to rotate by a driving mechanism to adjust the cross-sectional area of ​​the airflow passing through the intermediate tube. The smaller the cross-sectional area, the faster the airflow velocity. When the gas source has been adjusted to the maximum gas velocity, the adjusting disc can be used to reduce the cross-sectional area of ​​the airflow passing through the intermediate tube to increase the gas velocity, thereby further increasing the driving force of the gas, so that the gas can push the coal blocks more stably and more forcefully, further improving the clearing effect.

[0025] 4. The driving mechanism includes a driving ring, a forward rotation area and a reverse rotation area. The rotation of the driving ring drives the nozzle to rotate forward and reversely to achieve the purpose of adjusting the angle of the gas injection port. Furthermore, an airflow adjustment area is set between the forward rotation area and the reverse rotation area to facilitate driving the adjustment disc to rotate and achieve the purpose of adjusting the airflow passing through the internal cross section of the intermediate tube. The operation of the two actuators, the nozzle and the adjustment disc, is realized through a driving ring, which reduces the number of driving electrical components, ensures the synchronous operation of each nozzle and the adjustment disc, and ensures the efficiency of clearing the blockage;

[0026] 5. The rotary paddle level meter is a commonly used instrument for detecting the position of materials in a silo. It determines that there is a blockage of coal blocks below the rotary paddle level meter by the cessation of rotation of the detection rod. A protective mechanism is provided in the present invention, which is connected to the main air pipe through an air flow transfer box and discharged through the strip outlet channel of the interlocking strip to form an air flow block. The blocked air flow can push away the coal blocks and prevent the coal blocks from hitting the detection rod and causing the rotary paddle level meter to misjudge. Compared with the direct use of the baffle, the baffle is also likely to become a fulcrum for the blockage of coal blocks, and the blocked air flow can avoid this situation. Furthermore, a plug pipe and a side air outlet are provided to prevent the coal blocks from hitting the detection rod of the rotary paddle level meter from the side, further reducing the probability of misjudgment of the rotary paddle level meter.

[0027] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0029] Figure 1 A schematic diagram of the structure of a multi-angle coal bunker fluidized blockage clearing system provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of a second branch airway in a multi-angle coal bunker fluidized blockage clearing system provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of the installation structure of a nozzle in a multi-angle coal bunker fluidization clearing system provided in an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the structure of the gas injection port in a multi-angle coal bunker fluidized blockage clearing system provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of an airway branch structure in a multi-angle coal bunker fluidized blockage clearing system provided in an embodiment of the present application;

[0034] Figure 6 for Figure 5 A schematic diagram of the local enlarged structure of the middle A area;

[0035] Figure 7 A schematic diagram of the installation structure of a drive ring and a transmission outer gear ring in a multi-angle coal bunker fluidization blockage clearing system provided in an embodiment of the present application;

[0036] Figure 8 A schematic diagram of the structure of a driving ring in a multi-angle coal bunker fluidized blockage clearing system provided in an embodiment of the present application;

[0037] Fig. 9 A schematic diagram of the installation structure of an airflow transfer box in a multi-angle coal bunker fluidization clearing system provided in an embodiment of the present application;

[0038] Fig.10 A schematic diagram of the installation structure of an air distribution plate in a multi-angle coal bunker fluidized blockage clearing system provided in an embodiment of the present application;

[0039] Fig.11 A schematic diagram of the installation structure of a pipe in a multi-angle coal bunker fluidized blockage clearing system provided in an embodiment of the present application.

[0040] Numbers in the figure:

[0041] 1. Coal bunker;

[0042] 2. Gas injection mechanism; 21. Main gas pipe; 22. First branch gas channel; 23. Second branch gas channel; 231. Connecting pipe; 24. Pulse type electric valve;

[0043] 3. Nozzle mechanism; 31. Nozzle; 32. Gas injection port; 321. Gas injection angle; 33. Oblique baffle; 34. Driven bevel gear; 35. First reducer; 36. Intermediate tube; 37. Rotating shaft; 38. Adjusting disc; 39. Driven spur gear; 310. First support seat; 311. Thrust ball bearing; 312. First bearing;

[0044] 4. Driving mechanism; 41. Transmission outer gear ring; 42. Driving ring; 421. Inner ring surface; 422. Outer ring surface; 423. Forward rotation area; 424. Airflow adjustment area; 425. Reverse rotation area; 426. First transmission tooth; 427. Second transmission tooth; 43. Motor; 44. Driving gear;

[0045] 5. Airway branch structure; 51. Straight pipe; 52. Second reducer; 53. Tee pipe; 54. Second bearing; 55. First external thread; 56. First internal thread sleeve; 57. Second external thread; 58. Second internal thread sleeve; 59. Annular block;

[0046] 6. Rotary paddle level meter;

[0047] 7. Protective mechanism; 71. Airflow transfer box; 72. Third branch airway; 73. Fitting strip; 74. Strip-shaped air outlet channel; 75. Guide slope; 76. Intubation tube; 77. Side air outlet; 78. Air distribution plate. DETAILED DESCRIPTION

[0048] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0049] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0050] Please refer to Figures 1 to 11 The embodiment of the present invention provides a multi-angle coal bunker fluidization clearing system, comprising:

[0051] The coal bunker 1 has a first axis at its center, and the extension direction of the first axis is a first direction; wherein the first direction is Figure 1 In the vertical direction, the first axis is the center line of the coal bunker 1;

[0052] The gas injection mechanism 2 includes a main gas pipe 21 disposed on one side of the coal bunker 1, one end of the main gas pipe 21 is connected to the gas source, and the coal bunker 1 is provided with a plurality of groups of secondary gas paths arranged along the first direction, each of which includes two symmetrically arranged second branch gas channels 23, one end of each of the two second branch gas channels 23 is connected to the main gas pipe 21, and each of the second branch gas channels 23 is provided with a pulse type electric valve 24 near the end of the main gas pipe 21;

[0053] A plurality of nozzle mechanisms 3, corresponding to each secondary gas path, respectively, including a plurality of nozzles 31 surrounding a first axis and penetrating the coal bunker 1, the nozzles 31 all having a second axis, the extension direction of the second axis being perpendicular to the first direction, the nozzles 31 being located at the inner end of the coal bunker 1 and all having an inclined baffle 33, the inclined baffle 33 and the inner wall of the coal bunker 1 having a first angle opening downward, the bottom end of the nozzle 31 being located between the inclined baffle 33 and the inner wall of the coal bunker 1 and having an air injection port 32, the opening direction of the air injection port 32 and the normal direction of the inclined baffle 33 being perpendicular to each other;

[0054] like Figure 1 As shown, two second branch airways 23 of the same secondary air path are connected to the main air pipe 21 through the first branch airway 22. The gas generated by the air source will first enter the main air pipe 21, and then be diverted to each first branch airway 22, and then enter each secondary air path, and finally flow into each nozzle 31 from the second branch airway 23. After the airflow is blocked by the inclined baffle 33, it can be stably discharged from the air injection port 32, which drives the coal blocks to move downward on the one hand, and sweeps the mud and powder between the coal blocks on the other hand, making it easier for the coal blocks to move downward, thereby achieving the purpose of clearing the blockage. In addition, the multiple nozzles 31 surrounding the coal bin 1 can push the coal blocks at the same height, so that the coal block assembly can move downward together, achieving a better clearing effect. Furthermore, a pulse-type electric valve 24 is provided to allow the airflow to impact the coal blocks at the blocked position in a pulsed manner, thereby improving the clearing effect. In addition, as Figure 4 As shown, the opening of the gas injection port 32 has a gas injection angle 321, and the angle of the gas injection angle 321 is one hundred and twenty degrees, which can more fully drive the coal blocks.

[0055] A plurality of rotary paddle level gauges 6 are provided on the coal bunker 1 and correspond to each secondary gas path respectively, and are used to monitor the position of the material in the coal bunker 1;

[0056] like Figure 1 and Fig. 9As shown, the rotary paddle level meter 6 is a common existing mechanism, and its installation method is usually to set a connecting pipe and a flange on the coal bunker 1, and connect it through the flange on the main body of the rotary paddle level meter 6, and the detection rod of the rotary paddle level meter 6 extends into the coal bunker 1 through the connecting pipe. When the detection rod stops rotating, the rotary paddle level meter 6 will determine that the material stays nearby, that is, the coal block blocks the detection rod, thereby achieving the purpose of detecting the coal block blockage. When blockage occurs, the pulse-type electric valve 24 of the corresponding secondary gas circuit can be quickly started to achieve the purpose of injecting gas to clear the blockage.

[0057] In some embodiments, the nozzle mechanism 3 further includes a plurality of intermediate tubes 36 connected to the ends of each nozzle 31 away from the first axis, an adjusting disc 38 rotating around the third axis is provided in the middle of the intermediate tube 36, the extending direction of the third axis is the first direction, and the arc surface of the adjusting disc 38 is adapted to the inner surface of the intermediate tube 36;

[0058] The clearing system further includes a plurality of driving mechanisms 4, each driving mechanism 4 corresponding to each secondary gas path, each driving mechanism 4 driving the corresponding nozzle 31 to rotate around the second axis, and / or driving the corresponding adjustment disc 38 to rotate around the third axis;

[0059] like Figure 2 and Figure 3 As shown, on the basis of clearing the blockage with the nozzle 31, the driving mechanism 4 can drive each nozzle 31 at the same height to rotate synchronously, so that the gas injection port 32 with the opening facing downward swings to the same side. Compared with directly pushing the coal block downward, the rotating nozzle 31 can push part of the coal block to move clockwise or counterclockwise. On the basis of the original downward flow, the coal block in the fluidized state has a downward movement trend. During the actual clearing, if the resistance of the coal block in the fluidized state driven by the airflow to move downward is too large and the blockage problem is not solved, the nozzle 31 can be rotated to adjust the flow angle of the coal block, so as to achieve multi-angle driving of the coal block flow and avoid the single-direction movement trend. In case of excessive resistance, the driving mechanism 4 is further used to drive the adjusting disc 38 to rotate and adjust the cross-sectional area of ​​the airflow passing through the middle tube 36. The smaller the cross-sectional area, the faster the airflow velocity. When the gas source has been adjusted to the maximum gas flow velocity, the adjusting disc 38 can be used to reduce the cross-sectional area of ​​the airflow passing through the middle tube 36 and increase the gas flow velocity, thereby further increasing the gas driving force, so that the gas can push the coal blocks more stably and more powerfully, further improving the clearing effect. The driving modes of and and or can be designed in advance according to needs, so that the two can operate independently or in coordination to improve the clearing efficiency.

[0060] In some embodiments, the nozzle 31 is rotatably mounted on one end of the intermediate tube 36, the other end of the intermediate tube 36 is connected to the second branch airway 23, a rotatable shaft 37 is provided through the middle of the intermediate tube 36, the shaft 37 has a third axis, and an adjusting disc 38 is clamped in the middle of the shaft 37;

[0061] like Figure 3 and Figure 5 As shown, the adjusting disc 38 will rotate along with the rotating shaft 37, and the arc surface of the adjusting disc 38 will match the inner surface of the intermediate tube 36. At this time, the cross-section through which the airflow flows is the smallest. As the adjusting disc 38 rotates, it will gradually increase and then decrease, thereby achieving the purpose of repeated adjustment.

[0062] In some embodiments, each nozzle 31 is provided with a driven bevel gear 34 on the outer wall outside the coal bunker 1, and each rotating shaft 37 is provided with a driven spur gear 39 at the top end through the intermediate pipe 36;

[0063] The driving mechanism 4 includes a driving ring 42 disposed between each driven bevel gear 34 and each driven spur gear 39, the driving ring 42 having an inner ring surface 421 and an outer ring surface 422, the driving ring 42 is provided with a meshing area corresponding to each nozzle 31, each meshing area includes a forward rotation area 423, an airflow adjustment area 424 and a reverse rotation area 425, second transmission teeth 427 are provided on the inner ring surface 421 in the forward rotation area 423 and the reverse rotation area 425, each second transmission tooth 427 meshes with the corresponding driven bevel gear 34, and first transmission teeth 426 are provided on the outer ring surface 422 in the airflow adjustment area 424, each first transmission tooth 426 meshes with the corresponding driven spur gear 39;

[0064] like Figure 3 and Figure 8 As shown, when the driving ring 42 rotates, the first transmission teeth 426 will push the teeth of the driven spur gear 39, thereby driving the driven spur gear 39 to rotate, thereby achieving the purpose of driving the rotating shaft 37 and the adjusting disc 38 to rotate, and the second transmission teeth 427 of the inner ring surface 421 will push the teeth of the driven bevel gear 34, thereby driving the driven bevel gear 34 to rotate, driving the nozzle 31 to rotate, thereby achieving the purpose of adjusting the outlet angle of the gas injection port 32;

[0065] In this embodiment, the initial state of the drive ring 42 is as follows: Figure 8As shown, the direction of the airflow passing through the intermediate tube 36 is perpendicular to the normal direction of the adjustment disc 38. When the driving ring 42 rotates, the flow rate will be adjusted first, that is, the first transmission teeth 426 of the airflow adjustment area 424 drive the adjustment disc 38 to rotate. When the driven spur gear 39 is separated from the airflow adjustment area 424, the adjustment disc 38 will return to the initial state and continue to move. Regardless of whether it enters the forward rotation area 423 or the reverse rotation area 425, the second transmission teeth 427 of the inner ring surface 421 will drive the driven bevel gear 34 to rotate, but due to the difference in the rotation direction of the driving ring 42, the nozzle 31 will be driven to rotate forward or reverse, so as to achieve the purpose of stably adjusting the angle of the nozzle 31; further, optionally, a plurality of first transmission teeth 426 are provided on the outer ring surface 422 of the forward rotation area 423 and the reverse rotation area 425. By adjusting the spacing between the first transmission teeth 426, the rotation angle of the driven spur gear 39 is adjusted, thereby realizing the synchronous rotation of the nozzle 31 and the adjustment disc 38, and achieving the purpose of more sufficient blockage removal.

[0066] In some embodiments, the driving mechanism 4 further includes a transmission outer gear ring 41 sleeved outside the coal bunker 1, a driving ring 42 is arranged on the bottom surface of the transmission outer gear ring 41, a motor 43 is arranged at a position of the outer wall of the coal bunker 1 corresponding to the transmission outer gear ring 41, and a driving gear 44 is sleeved on the output shaft end of the motor 43, and the driving gear 44 is meshed and transmission-connected with the transmission outer gear ring 41;

[0067] like Figure 3 , Figure 7 and Figure 8 As shown, the driving gear 44 is driven to rotate by the motor 43, and then the driving gear 44 drives the transmission outer gear ring 41 to rotate, and the driving ring 42 is arranged on the bottom surface of the transmission outer gear ring 41, so that the driving ring 42 can be stably adjusted.

[0068] In some embodiments, a first support seat 310 is provided at the outer wall of the coal bunker 1 corresponding to each nozzle 31, and a thrust ball bearing 311 is embedded and installed on the first support seat 310, and the other end surface of the thrust ball bearing 311 is embedded in the end of the driven bevel gear 34;

[0069] like Figure 3 As shown, the driven bevel gear 34 is supported by the thrust ball bearing 311 to improve the stability of the driven bevel gear 34 during rotation. Furthermore, the transmission outer gear ring 41 is supported by the top of the first support seat 310 to ensure the stable rotation of the transmission outer gear ring 41. When disassembling or adjusting the nozzle 31, it is only necessary to push the transmission outer gear ring 41 upward.

[0070] In some embodiments, a plurality of protection mechanisms 7 are provided on the coal bunker 1, and each protection mechanism 7 is respectively located above each rotary paddle level meter 6, and is used to prevent the material from colliding with the detection rod of the rotary paddle level meter 6 when falling; Figure 1 and Fig. 9As shown, the coal block is prevented from hitting the detection rod, causing the detection rod to stop operating, thereby avoiding the misjudgment of the rotary paddle level meter 6 and improving the detection accuracy of the rotary paddle level meter 6.

[0071] In some embodiments, the coal bunker 1 is provided with an airflow transfer box 71 at a position above each rotary-resistance level meter 6, an air distribution plate 78 is provided in the middle of the airflow transfer box 71, and a third branch airway 72 connected to the main air pipe 21 is provided on one side of the air distribution plate 78 of the airflow transfer box 71, and a plurality of interlocking strips 73 arranged along the first direction are provided at the top of the airflow transfer box 71 away from the third branch airway 72, and a strip-shaped air outlet channel 74 is provided in the middle of the interlocking strip 73, and two inserting tubes 76 are symmetrically provided at the bottom of the airflow transfer box 71 away from the third branch airway 72, and the inserting tubes 76 are evenly provided with side air outlet holes 77 on the sides away from each other;

[0072] like Fig. 9 , Fig.10 and Fig.11 As shown, a number of fine holes are evenly distributed on the air distribution plate 78. The gas enters the interior of the air flow transfer box 71 from the main air pipe 21 through the third branch air channel 72, is evenly distributed through the fine holes on the air distribution plate 78, and is then discharged through the strip-shaped air outlet channel 74 of the interlocking strip 73 to form an air flow blocking function. The air flow blocking function can push away the coal blocks, thereby preventing the coal blocks from hitting the detection rod and causing the rotary level meter 6 to misjudge. Compared with the direct use of the baffle, the baffle is also likely to become a fulcrum for the blockage of the coal blocks, and the air flow blocking function can avoid this situation. In addition, the multiple interlocking strips 73 arranged in the vertical direction enable the protective mechanism 7 to have multiple air flow blocking functions, thereby improving the blocking effect. In addition, part of the gas will also be discharged from the side air outlet 77 of the insert pipe 76 to prevent the coal block from hitting the detection rod of the rotary material level meter 6 from the side, further reducing the probability of misjudgment of the rotary material level meter 6. Furthermore, the insert pipes 76 are also evenly provided with side air outlet holes 77 on the sides close to each other, and these two groups of side air outlet holes 77 are staggered, that is, a new airflow obstruction is formed, which also reduces the mutual interference between the obstructed airflows and improves the blocking effect. Optionally, a guiding slope 75 is provided on the inner edge of the strip-shaped air outlet channel 74 to allow more gas to enter the strip-shaped air outlet channel 74, thereby increasing the air outlet rate and thereby increasing the strength of the airflow obstruction.

[0073] In some embodiments, the second branch air channel 23 includes a plurality of air channel branch structures 5 connected to the nozzle 31, and a connecting pipe 231 connecting each air channel branch structure 5, and each air channel branch structure 5 is used for the installation of the intermediate pipe 36 and the nozzle 31;

[0074] like Figure 3 , Figure 5 and Figure 6As shown, after the intermediate tube 36 and the nozzle 31 are installed, the nozzle 31 can be inserted into the corresponding installation hole and can rotate automatically after the installation is completed. Furthermore, the intermediate tube 36 after installation remains stable and will not rotate together, ensuring that when the driving mechanism 4 is working, the nozzle 31 rotates stably and the intermediate tube 36 remains stable.

[0075] In some embodiments, the airway branch structure 5 includes two straight tubes 51 and a three-way tube 53, both ends of the three-way tube 53 are rotatably connected to the two straight tubes 51, and the remaining end of the three-way tube 53 is detachably connected to the middle tube 36;

[0076] like Figure 3 , Figure 5 and Figure 6 As shown, when installing the nozzle 31 or the intermediate tube 36, first lift the transmission outer gear ring 41 upward, then insert the nozzle 31 into the corresponding installation hole, and then swing the tee tube 53 to adjust the remaining end of the tee tube 53 to correspond to the intermediate tube 36, and then assemble.

[0077] In some embodiments, the remaining end of the tee pipe 53 is provided with a first external thread 55, the first external thread 55 is externally threadedly connected to a first internal thread sleeve 56, the middle pipe 36 is provided with a second external thread 57 at the end away from the nozzle 31, the second external thread 57 is externally threadedly connected to a second internal thread sleeve 58, and an annular block 59 is embedded and installed inside the second internal thread sleeve 58 near the end of the first internal thread sleeve 56;

[0078] like Figure 5 and Figure 6 As shown, when installing the remaining end of the tee pipe 53 and the intermediate pipe 36, first rotate the second internally threaded sleeve 58, and realize the preliminary connection between the two through the cooperation of the second internally threaded sleeve 58 and the second external thread 57, then push the nozzle 31 and the intermediate pipe 36 toward the coal bunker 1 side, so that the driven bevel gear 34 squeezes the thrust ball bearing 311 toward the first support seat 310 to keep the thrust ball bearing 311 stable, then rotate the first internally threaded sleeve 56, and drive the first internally threaded sleeve 56 to move toward the nozzle 31 side through the cooperation of the first internally threaded sleeve 56 and the first external thread 55, and resist the annular block 59, and push the intermediate pipe 36 and the nozzle 31 toward the coal bunker 1 through the action of the second internally threaded sleeve 58 and the second external thread 57, and the thrust ball bearing 311 and the first support seat 310 are squeezed by the driven bevel gear 34 to ensure the stable installation of the nozzle 31 and the intermediate pipe 36.

[0079] In some embodiments, Figure 2 and Figure 5As shown, a second reducer 52 is provided between the two straight pipes 51 and the three-way pipe 53, and a first reducer 35 is provided at one end of the nozzle 31. The first reducer 35 and the second reducer 52 both have a narrow opening and a wide opening. Along the gas flow direction, the narrow opening of the second reducer 52 close to the pulse type electric valve 24 is welded to the three-way pipe 53, and a second bearing 54 is embedded in its wide opening. The second bearing 54 is sleeved on the outside of the corresponding straight pipe 51, and the narrow opening of the second reducer 52 away from the pulse type electric valve 24 is welded to the straight pipe 51, and a second bearing 54 is embedded in its wide opening. The second bearing 54 is sleeved on the corresponding end of the three-way pipe 53; Figure 3 As shown, one end of the nozzle 31 is welded to the narrow mouth of the first reducer 35, and a first bearing 312 is embedded in the wide mouth of the first reducer 35. The first bearing 312 is sleeved on the outer wall of the intermediate tube 36. The various components are connected by reducing pipe fittings to achieve a rotating connection between the pipes, and the airflow always flows from the wide mouth to the narrow mouth, thereby improving the flow efficiency of the airflow and reducing the waste of gas kinetic energy. If the airflow flows from the narrow mouth to the wide mouth, flow resistance will appear, causing the airflow velocity to weaken.

[0080] In some embodiments, Figure 2 and Figure 5 As shown, the first bearing 312 and the second bearing 54 are both provided with sealing rings near the narrow side, and the sealing rings are connected to the inner wall of the first reducer 35 or the inner wall of the second reducer 52, so as to reduce the contact between the airflow and the first bearing 312 or the second bearing 54, that is, to reduce the overflow of the airflow, and also to avoid the first bearing 312 or the second bearing 54 from being damaged by the impact of the airflow for a long time.

[0081] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0082] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-angle coal bunker fluidization clearing system, characterized in that: include: A coal bunker (1), wherein the coal bunker (1) has a first axis at its center, and the extension direction of the first axis is a first direction; The gas injection mechanism (2) comprises a main gas pipe (21) arranged at one side of the coal bunker (1), one end of the main gas pipe (21) being connected to a gas source, the coal bunker (1) being provided with a plurality of groups of secondary gas paths arranged along a first direction, each of the secondary gas paths comprising two symmetrically arranged second branch gas channels (23), one end of each of the two second branch gas channels (23) being connected to the main gas pipe (21), and each of the second branch gas channels (23) being provided with a pulse-type electric valve (24) near the end of the main gas pipe (21); A plurality of nozzle mechanisms (3), respectively corresponding to each of the secondary gas paths, comprising a plurality of nozzles (31) surrounding the first axis and penetrating the coal bunker (1), the nozzles (31) each having a second axis, the extension direction of the second axis being perpendicular to the first direction, the nozzles (31) being provided with an inclined baffle (33) at the inner end of the coal bunker (1), the inclined baffle (33) and the inner wall of the coal bunker (1) having a first angle opening downward, the bottom end of the nozzle (31) being located between the inclined baffle (33) and the inner wall of the coal bunker (1) and provided with an air injection port (32), the opening direction of the air injection port (32) being perpendicular to the normal direction of the inclined baffle (33); A plurality of rotary paddle level meters (6) are arranged on the coal bunker (1) and correspond to each of the secondary gas paths respectively, and are used to monitor the position of materials in the coal bunker (1).

2. The multi-angle coal bunker fluidization clearing system according to claim 1 is characterized in that: The nozzle mechanism (3) further comprises a plurality of intermediate tubes (36) connected to the ends of the nozzles (31) away from the first axis, an adjusting disc (38) rotating about a third axis is provided in the middle of the intermediate tube (36), the extending direction of the third axis is the first direction, and the arc surface of the adjusting disc (38) is matched with the inner surface of the intermediate tube (36); The blockage clearing system further comprises a plurality of driving mechanisms (4), each of the driving mechanisms (4) corresponding to each of the secondary gas paths, and each of the driving mechanisms (4) drives the corresponding nozzle (31) to rotate about the second axis, and / or drives the corresponding adjustment disc (38) to rotate about the third axis.

3. The multi-angle coal bunker fluidization clearing system according to claim 2 is characterized in that: The nozzle (31) is rotatably mounted on one end of the intermediate tube (36), and the other end of the intermediate tube (36) is connected to the second branch airway (23). A rotatable shaft (37) is provided through the middle of the intermediate tube (36), and the shaft (37) has the third axis. The adjusting disc (38) is clamped in the middle of the shaft (37).

4. The multi-angle coal bunker fluidization clearing system according to claim 3 is characterized in that: Each of the nozzles (31) is sleeved with a driven bevel gear (34) on the outer wall outside the coal bunker (1), and each of the rotating shafts (37) is sleeved with a driven spur gear (39) at the top end thereof passing through the intermediate tube (36); The driving mechanism (4) comprises a driving ring (42) arranged between each of the driven bevel gears (34) and each of the driven spur gears (39); the driving ring (42) comprises an inner ring surface (421) and an outer ring surface (422); the driving ring (42) is provided with a meshing area corresponding to each of the nozzles (31); each of the meshing areas comprises a forward rotation area (423), an airflow adjustment area (424) and a reverse rotation area (425); second transmission teeth (427) are provided on the inner ring surface (421) in the forward rotation area (423) and the reverse rotation area (425); each of the second transmission teeth (427) meshes with the corresponding driven bevel gear (34); and first transmission teeth (426) are provided on the outer ring surface (422) in the airflow adjustment area (424); each of the first transmission teeth (426) meshes with the corresponding driven spur gear (39).

5. The multi-angle coal bunker fluidization clearing system according to claim 4 is characterized in that: The driving mechanism (4) further comprises a transmission outer gear ring (41) sleeved outside the coal bin (1); the driving ring (42) is arranged on the bottom surface of the transmission outer gear ring (41); a motor (43) is arranged at a position on the outer wall of the coal bin (1) corresponding to the transmission outer gear ring (41); a driving gear (44) is sleeved on the output shaft end of the motor (43); and the driving gear (44) is meshed and transmission-connected with the transmission outer gear ring (41).

6. The multi-angle coal bunker fluidization clearing system according to claim 4 is characterized in that: A first support seat (310) is provided on the outer wall of the coal bunker (1) at a position corresponding to each of the nozzles (31), a thrust ball bearing (311) is embedded and installed on the first support seat (310), and the other end face of the thrust ball bearing (311) is embedded in the end of the driven bevel gear (34).

7. The multi-angle coal bunker fluidization clearing system according to claim 1 is characterized in that: The coal bunker (1) is provided with a plurality of protection mechanisms (7), each of which is located above each of the rotary paddle level gauges (6) and is used to prevent the material from colliding with the detection rod of the rotary paddle level gauge (6) when falling.

8. The multi-angle coal bunker fluidization clearing system according to claim 7 is characterized in that: The coal bunker (1) is provided with an airflow transfer box (71) at a position above each of the rotary-impedance level meters (6); an air distribution plate (78) is provided in the middle of the airflow transfer box (71); a third branch airway (72) connected to the main air pipe (21) is provided on one side of the air distribution plate (78); a plurality of interlocking strips (73) arranged along a first direction are provided at the top of the airflow transfer box (71) away from the third branch airway (72); a strip-shaped air outlet channel (74) is provided in the middle of the interlocking strip (73); two insert pipes (76) are symmetrically provided at the bottom of the airflow transfer box (71) away from the third branch airway (72); and side air outlet holes (77) are evenly provided on the mutually distant sides of the insert pipes (76).

9. The multi-angle coal bunker fluidization clearing system according to claim 3 is characterized in that: The second branch airway (23) comprises a plurality of airway branch structures (5) connected to the nozzle (31), and a connecting pipe (231) connecting each of the airway branch structures (5), and each of the airway branch structures (5) is used for the installation of the intermediate pipe (36) and the nozzle (31).

10. The multi-angle coal bunker fluidization clearing system according to claim 9, characterized in that: The airway branch structure (5) comprises two straight tubes (51) and a three-way tube (53), wherein two ends of the three-way tube (53) are rotatably connected to the two straight tubes (51), respectively, and the remaining end of the three-way tube (53) is detachably connected to the intermediate tube (36).

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