Automatic coal bunker cleaning and anti-blocking device

Abstract

The utility model relates to related technical field of coal bunker, and disclose coal bunker automatic cleaning of coal bunker anti -blocking device, including warehouse body, discharge pipe and transmission assembly, the inside of warehouse body is equipped with scraping assembly, the inside of discharge pipe is equipped with anti -blocking subassembly, and scraping assembly and anti -blocking subassembly are connected through transmission assembly, the utility model discloses scraping assembly and anti -blocking subassembly through linkage design, effectively solved the security risk and technical defects of traditional unblocking mode: adopt motor synchronous drive ring -shaped scraper and vibration drill bit, realized the cooperative operation of the automatic scraping of coal sticking to the bunker wall and the broken of discharge port blockage, avoid manual high -risk operation, eccentric wheel drive's anti -blocking subassembly makes the drill bit produce shearing broken effect through high -frequency vibration, and cooperation spring reset mechanism of bellows protection, ensure the efficient dredging of wet coal blockage, and ring -shaped rack transmission structure makes the scraper run smoothly, and the linkage design of anti -blocking subassembly significantly improves the cleaning efficiency, and reduces equipment energy consumption simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of coal bunkers, specifically to an automatic coal bunker cleaning and anti-blocking device. Background Technology

[0002] In front of the coal-fired boiler in a thermal power plant, there is usually a raw coal silo for holding the coal. The coal in the raw coal silo is transported to the boiler for combustion to release the energy in the coal. The raw coal silo refers to the storage silo for granular materials such as raw coal and coal slime in thermal power plants. It is widely used, and the reliability of the raw coal silo in the coal feeding process of thermal power plants is extremely important.

[0003] Currently used coal bunker unblocking devices mainly rely on manual labor using long-handled tools to poke and loosen the blockage, or on externally mounted vibrators to tap the bunker walls. For high-humidity coal accumulation, workers need to repeatedly climb the bunker, posing serious safety hazards. Traditional methods can only handle localized blockages, consume a lot of energy, and cannot simultaneously solve the problems of material buildup on the bunker walls and blockage at the discharge outlet. Therefore, an automatic coal bunker unblocking device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an automatic coal bunker clearing and anti-clogging device to solve the problems mentioned in the background section regarding commonly used coal bunker clearing devices, which mainly rely on manual labor using long-handled tools to poke and tamp the coal, or on externally mounted vibrators to tap the bunker walls. For high-humidity coal accumulation, workers need to repeatedly climb the bunker, posing serious safety hazards. Traditional methods can only handle localized blockages, consume a lot of energy, and cannot simultaneously solve the problems of material buildup on the bunker walls and blockage at the discharge outlet.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic coal bunker cleaning and anti-blocking device, comprising a bunker body, a discharge pipe and a transmission assembly, wherein a scraping assembly is provided inside the bunker body and an anti-blocking assembly is provided inside the discharge pipe, and the scraping assembly and the anti-blocking assembly are connected by the transmission assembly;

[0006] The scraping assembly includes a fixed ring and a motor. The motor is fixedly connected to a gear via a main shaft. An annular rack that meshes with the gear is rotatably connected inside the chamber. A support frame is fixedly connected to one side of the annular rack, and a scraper is fixedly connected to one side of the support frame.

[0007] The anti-blocking assembly includes an eccentric wheel, several tension springs, and a movable frame. A movable plate is fixedly sleeved on the outer side of the movable frame, and a support rod is fixedly connected inside the movable frame. Several drill bits are bolted to the upper surface of the support rod.

[0008] Preferably, an annular protrusion is fixedly sleeved on the outer side of the discharge pipe, and the tension spring is located between the annular protrusion and the movable frame.

[0009] Preferably, the discharge pipe is connected to the discharge port of the silo body, and a corrugated pipe is fixedly sleeved on the outside of the discharge pipe.

[0010] Preferably, the transmission assembly described above includes a driving wheel and a driven wheel. The driving wheel is fixedly sleeved on the outside of the main shaft, and a belt is sleeved on the outside of the driven wheel and the driving wheel. The belt has anti-slip texture on its inner side.

[0011] Preferably, the bottom of the aforementioned silo is fixedly connected to a connecting frame, and one side of the connecting frame is rotatably connected to a rotating shaft via a bearing. The driven wheel and the eccentric wheel are sequentially fixedly sleeved on the outside of the rotating shaft.

[0012] Preferably, a support base is fixedly connected to the outer side of the aforementioned silo body, and the motor is fixedly installed on one side of the support base.

[0013] Preferably, the aforementioned fixing ring is fixedly connected to the inside of the silo body, the annular rack is rotatably connected to the top of the fixing ring via a guide rail, and the bottom of the support frame is rotatably connected to the inside of the silo body via a guide rail.

[0014] Preferably, an annular cover is fixedly connected to one side of the aforementioned annular rack, and a rubber pad is fixedly connected to the top of the movable plate.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0016] This invention effectively solves the safety hazards and technical defects of traditional unblocking methods through the linkage design of the scraping component and the anti-blocking component: the use of a motor to synchronously drive the annular scraper and the vibrating drill bit realizes the coordinated operation of automatic scraping of coal stuck to the bin wall and crushing of blockages at the discharge port, avoiding high-risk manual operation; the anti-blocking component driven by the eccentric wheel uses high-frequency vibration to generate a shearing and crushing effect on the drill bit, and with the bellows-protected tension spring reset mechanism, it ensures efficient unblocking of wet coal blockages; the annular rack and pinion transmission structure makes the scraper run smoothly, and the linkage design with the anti-blocking component significantly improves the bin cleaning efficiency while reducing equipment energy consumption. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the mobile frame structure in the exploded state of this utility model;

[0019] Figure 2This is a schematic diagram of the cross-sectional structure of the hopper body of this utility model;

[0020] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the discharge pipe of this utility model;

[0022] Figure 5 This is a schematic diagram of the annular cover structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the hopper structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the hopper structure from another perspective of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Bin body; 2. Discharge pipe; 3. Transmission assembly; 31. Drive wheel; 32. Driven wheel; 33. Rotating shaft; 34. Belt; 4. Scraping assembly; 41. Fixing ring; 42. Motor; 43. Main shaft; 44. Gear; 45. Annular cover; 46. Support frame; 47. Scraper; 48. Annular rack; 5. Anti-clogging assembly; 51. Eccentric wheel; 52. Moving frame; 53. Support rod; 54. Drill bit; 55. Bellows; 56. Tension spring; 57. Annular protrusion; 58. Connecting frame; 59. Moving plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0028] Example

[0029] In current technologies, commonly used coal bunker unblocking devices mainly rely on manual labor using long-handled tools to poke and tamp the coal, or on externally mounted vibrators to tap the bunker walls. For high-humidity coal accumulation, workers need to repeatedly climb the bunker to operate, posing serious safety hazards. Traditional methods can only deal with local blockages, consume a lot of energy, and cannot simultaneously solve the problems of material adhering to the bunker walls and blockage at the discharge outlet.

[0030] Please see Figure 1-7 This utility model provides a technical solution: an automatic coal bunker cleaning and anti-blocking device, including a bunker body 1, a discharge pipe 2 and a transmission assembly 3. The inside of the bunker body 1 is provided with a scraping assembly 4, and the inside of the discharge pipe 2 is provided with an anti-blocking assembly 5. The scraping assembly 4 and the anti-blocking assembly 5 are connected through the transmission assembly 3.

[0031] The scraping assembly 4 includes a fixing ring 41 and a motor 42. A support base is fixedly connected to the outside of the chamber 1. The motor 42 is fixedly installed on one side of the support base, which provides fixed support for the motor 42. The motor 42 is fixedly connected to a gear 44 via a main shaft 43. An annular rack 48 that meshes with the gear 44 is rotatably connected inside the chamber 1. A support frame 46 is fixedly connected to one side of the annular rack 48. A scraper 47 is fixedly connected to one side of the support frame 46. The fixing ring 41 is fixedly connected to the inside of the chamber 1. The annular rack 48 is rotatably connected to the top of the fixing ring 41 via a guide rail. The bottom of the support frame 46 is rotatably connected to the inside of the chamber 1 via a guide rail. The fixing ring 41 provides fixed support for the annular rack 48. The guide rail at the bottom of the support frame 46 increases the stability of the support frame 46 when it moves. An annular cover 45 is fixedly connected to one side of the annular rack 48, which protects the gear 44.

[0032] The anti-clogging component 5 includes an eccentric wheel 51, several tension springs 56 and a moving frame 52. The eccentric wheel 51 adopts an asymmetrical fan-shaped structure, and its biased part is opposite to the direction of movement of the drill bit 54, forming inertial compensation. The surface of the eccentric wheel 51 is plated with hard chrome. An annular protrusion 57 is fixedly sleeved on the outside of the discharge pipe 2. A tension spring 56 is located between the annular protrusion 57 and the movable frame 52. When the tension spring 56 loses external force, it pulls the movable frame 52 to move upward and reset. The discharge pipe 2 is connected to the discharge port of the bin 1. A corrugated pipe 55 is fixedly sleeved on the outside of the discharge pipe 2. The corrugated pipe 55 protects the tension spring 56. A movable plate 59 is fixedly sleeved on the outside of the movable frame 52. A support rod 53 is fixedly connected inside the movable frame 52. Several drill bits 54 are bolted to the upper surface of the support rod 53. The drill bits 54 are conical spiral drills to enhance the shearing and crushing effect on the coal. More drill bits 54 are symmetrically arranged on the support rod 53 to form an interlaced arrangement and expand the crushing range.

[0033] Transmission assembly 3 includes a drive wheel 31 and a driven wheel 32. The drive wheel 31 is fixedly sleeved on the outside of the main shaft 43. A belt 34 is sleeved on the outside of the driven wheel 32 and the drive wheel 31. The inner side of the belt 34 is provided with anti-slip texture to reduce the risk of slippage. The belt 34 is made of thickened polyurethane material, and the anti-slip texture on the inner side is arranged in a herringbone pattern, which can effectively counteract the lateral vibration when the eccentric wheel 51 rotates. The drive wheel 31 drives the driven wheel 32 to rotate synchronously through the belt 34. A connecting frame 58 is fixedly connected to the bottom of the compartment 1. One side of 8 is rotatably connected to a rotating shaft 33 via a bearing. The bearing is a double-row deep groove ball bearing. The inner ring is interference-fitted with the rotating shaft 33, and the outer ring has a clearance of 0.1-0.2mm with the connecting frame 58. The driven wheel 32 and the eccentric wheel 51 are sequentially fixedly sleeved on the outside of the rotating shaft 33. The driven wheel 32 drives the eccentric wheel 51 to rotate through the rotating shaft 33. A rubber pad is fixedly connected to the top of the moving plate 59. The rubber pad increases the friction between the moving plate 59 and the eccentric wheel 51. The rubber pad of the moving plate 59 is made of wear-resistant nitrile rubber.

[0034] The working principle or structural principle is as follows: Coal is injected into the silo 1 of the coal bunker. During cleaning, the motor 42 is started. The motor 42 drives the gear 44 to rotate through the main shaft 43, which in turn drives the meshing annular rack 48 to rotate on the top of the fixed ring 41. This causes the scraper 47 on one side of the support frame 46 to rotate relative to the inner wall of the silo 1, scraping off the wet coal adhering to the inner wall of the silo 1 and preventing the coal from sticking to the wall. At the same time, the motor 42 drives the driven wheel 32 to rotate through the drive wheel 31 of the transmission assembly 3 via the belt 34, thereby causing the rotating shaft 3 to rotate. 3 rotates synchronously with the main shaft 43, driving the eccentric wheel 51 to rotate. When the eccentric wheel 51 rotates to the lowest point, it drives the moving frame 52 to move to the lowest position through the moving plate 59, and the tension spring 56 is stretched. When the eccentric wheel 51 is away from the lowest point, the tension spring 56 contracts. The moving plate 59 is always in close contact with the lower surface of the eccentric wheel 51 through the moving frame 52, realizing the up and down vibration of the moving frame 52. When the eccentric wheel 51 rotates, the up and down stroke of the moving frame 52 is 30-40mm. Within this range, the tension spring 56 is always in the elastic deformation zone. The support rod 53 drives the drill bit 54 to vibrate up and down at high speed relative to the discharge pipe 2. During this vibration, the conical spiral drill bit 54 not only breaks up the coal, preventing accumulation, but also allows it to fall along the threads on its surface. A 10-15mm gap is maintained between the tip of the drill bit 54 and the inner wall of the discharge pipe 2, ensuring effective unblocking while preventing collisions. The spiral teeth enhance the axial discharge capacity of the coal, reducing blockages and preventing wet coal from accumulating at the discharge pipe 2 and clogging the outlet. The belt 34 has anti-slip grooves to reduce the risk of slippage. A grease hole is provided on the guide rail of the fixing ring 41 for periodic manual grease application. Figure 4 It can be seen that the movable frame 52 moves up and down along the outside of the discharge pipe 2, thereby guiding the movable frame 52 and causing it to move up and down along the discharge pipe 2.

[0035] In summary, during the emptying process, motor 42 drives the meshing annular rack 48 to rotate at the top of the fixed ring 41 via gear 44. This causes the scraper 47 on one side of the support frame 46 to rotate relative to the inner wall of the bin 1, scraping away the wet coal adhering to the inner wall of the bin 1 and preventing coal from sticking to the wall. Simultaneously, motor 42 drives eccentric wheel 51 to rotate via transmission assembly 3. When eccentric wheel 51 rotates to its lowest point, it drives moving frame 52 to its lowest position via moving plate 59. When eccentric wheel 51 leaves its lowest point, moving frame 52 is moved upward by tension spring 56, achieving up-and-down vibration of moving frame 52. This causes drill bit 54 to vibrate up and down at high speed relative to discharge pipe 2, preventing wet coal from clogging the discharge port. Tension spring 56 needs to be inspected and replaced regularly to avoid insufficient elasticity. Motor 42 is a model CLJSJ-CH02 manufactured by Kunshan Taiya Electromechanical Technology Co., Ltd. Since the structure and operating principle of this model are existing technologies, their structure and operating principle will not be described in detail here.

[0036] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. An automatic coal bunker cleaning and anti-blocking device, comprising a bunker body (1), a discharge pipe (2), and a transmission assembly (3), characterized in that, The inside of the hopper (1) is provided with a scraping component (4), and the inside of the discharge pipe (2) is provided with an anti-blocking component (5). The scraping component (4) and the anti-blocking component (5) are connected by a transmission component (3). The scraping assembly (4) includes a retaining ring (41) and a motor (42). The motor (42) is fixedly connected to a gear (44) via a main shaft (43). The interior of the chamber (1) is rotatably connected to an annular rack (48) that meshes with the gear (44). A support frame (46) is fixedly connected to one side of the annular rack (48), and a scraper (47) is fixedly connected to one side of the support frame (46). The anti-blocking component (5) includes an eccentric wheel (51), several tension springs (56) and a movable frame (52). A movable plate (59) is fixedly sleeved on the outside of the movable frame (52), and a support rod (53) is fixedly connected inside the movable frame (52). Several drill bits (54) are bolted to the upper surface of the support rod (53).

2. The automatic coal bunker cleaning and anti-blocking device according to claim 1, characterized in that, An annular protrusion (57) is fixedly sleeved on the outside of the discharge pipe (2), and the tension spring (56) is located between the annular protrusion (57) and the movable frame (52).

3. The automatic coal bunker cleaning and anti-blocking device according to claim 1, characterized in that, The discharge pipe (2) is connected to the discharge port of the silo body (1), and a corrugated pipe (55) is fixedly sleeved on the outside of the discharge pipe (2).

4. The automatic coal bunker cleaning and anti-blocking device according to claim 1, characterized in that, The transmission assembly (3) includes a drive wheel (31) and a driven wheel (32). The drive wheel (31) is fixedly sleeved on the outside of the main shaft (43). The driven wheel (32) and the outside of the drive wheel (31) are sleeved with a belt (34). The inner side of the belt (34) is provided with anti-slip texture.

5. The automatic coal bunker cleaning and anti-blocking device according to claim 4, characterized in that, A connecting frame (58) is fixedly connected to the bottom of the hopper (1). A rotating shaft (33) is rotatably connected to one side of the connecting frame (58) via a bearing. The driven wheel (32) and the eccentric wheel (51) are sequentially fixedly sleeved on the outside of the rotating shaft (33).

6. The automatic coal bunker cleaning and anti-blocking device according to claim 1, characterized in that, A support base is fixedly connected to the outside of the chamber (1), and the motor (42) is fixedly installed on one side of the support base.

7. The automatic coal bunker cleaning and anti-blocking device according to claim 1, characterized in that, The fixed ring (41) is fixedly connected to the inside of the silo body (1), the annular rack (48) is rotatably connected to the top of the fixed ring (41) via a guide rail, and the bottom of the support frame (46) is rotatably connected to the inside of the silo body (1) via a guide rail.

8. The automatic coal bunker cleaning and anti-blocking device according to claim 1, characterized in that, An annular cover (45) is fixedly connected to one side of the annular rack (48), and a rubber pad is fixedly connected to the top of the movable plate (59).

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