Coal bunker level automatic monitoring and replenishment control device

Abstract

This utility model belongs to the field of industrial automation control technology, and relates to an automatic monitoring and replenishment control device for coal silos. It includes a silo body, with an outgoing material pipe fixedly connected to the bottom of the silo body, the outgoing material pipe communicating with the interior of the silo body, and evenly distributed support legs fixedly connected to the bottom of the silo body. A load-bearing ring is provided on the inner side of the outgoing material pipe near the bottom. The device also includes a material level monitoring component. Through the cooperation of the load-bearing ring, support pipe, pressure sensor, L-shaped plate, and PLC control module, this utility model enables the load-bearing ring, spring, and T-shaped rod to descend and press the pressure sensor based on the weight of the coal itself. This allows the pressure sensor to monitor the weight of the coal in the silo in real time, and the PLC controller receives the signal from the pressure sensor, allowing operators to clearly know the remaining amount of coal in the silo. This effectively solves the problem of operators being unable to properly observe the material level in the coal silo.

Description

Technical Field

[0001] This utility model belongs to the field of industrial automation control technology, and relates to an automatic monitoring and replenishment control device for coal silo level. Background Technology

[0002] In industries such as thermal power generation, iron and steel metallurgy, coal chemical industry and deep coal processing, where coal is the core raw material or fuel, coal silos are key equipment for coal storage and transfer. Their material level directly determines the continuity, stability and economy of subsequent production processes. If the material level is too low, it can easily lead to coal supply interruption, causing production shutdown, equipment idling and wear, and even production process disorder. Therefore, accurate monitoring of coal silo material level and efficient material replenishment control are one of the core requirements to ensure the continuous and stable operation of industrial production. A search of Chinese patent publication number CN211197300U reveals a device that can effectively eliminate congestion at the outlet of a coal bunker. This patent effectively solves the problem that in a funnel-shaped coal bunker, materials fall from top to bottom by their own weight. The further down the flow path, the smaller the flow area becomes, and the greater the friction and pressure between coal blocks and between coal blocks and the hopper wall. This can easily lead to arching and loose spaces in the coal within the bunker, affecting the descent of coal, causing blockages, and impacting normal production. In actual use, the silos are generally high, making it difficult for staff to observe the material level inside. Therefore, the above technical solutions inevitably lead to empty silos, resulting in coal supply interruptions, production shutdowns, equipment idling and wear, and even production process disruptions. Alternatively, when loading coal into the silos, the inability to observe the material level may cause overflow, resulting in low work efficiency. Summary of the Invention

[0003] The technical problem this utility model aims to solve is that workers cannot properly observe the material level in the coal bunker, which inevitably leads to empty bunkers, or when loading coal into the bunker, the inability to observe the material level may result in overflow.

[0004] The present invention relates to an automatic monitoring and replenishment control device for coal silos, comprising a silo body, an outgoing material pipe fixedly connected to the bottom of the silo body, the outgoing material pipe being connected to the interior of the silo body, evenly distributed support legs fixedly connected to the bottom of the silo body, and a load-bearing ring provided on the inner side of the outgoing material pipe near the bottom. The material level monitoring component is located at the bottom of the load-bearing ring. The material level monitoring component can monitor the amount of coal in the bin. The material level monitoring component also includes a feeding mechanism for replenishing the bin.

[0005] Preferably, the material level monitoring component includes an inner discharge pipe, a support pipe, a T-shaped rod, and a limiting ring. The bottom of the supporting ring is fixedly connected to the inner discharge pipe, and the bottom of the inner discharge pipe extends to the inside of the outer discharge pipe. The bottom of the supporting ring is fixedly connected to evenly distributed support pipes, the bottom end of which penetrates the silo body and is slidably connected to the silo body. A T-shaped rod is provided below the support pipe, and the top end of the T-shaped rod extends to the inside of the support pipe. A limiting ring is fixedly connected to the outside of the support pipe near the bottom.

[0006] Preferably, the material level monitoring component further includes a pressure sensor, a spring, an L-shaped plate, and a PLC control module. The bottom of the silo is fixedly connected with evenly distributed L-shaped plates. A pressure sensor is installed on the inner side of the L-shaped plate near the bottom. The top of the pressure sensor abuts against the bottom of the T-shaped rod. A spring is fixedly connected between the top of the T-shaped rod and the top of the inner side of the support tube. A PLC control module is installed on the outer side of the silo near the bottom.

[0007] Preferably, the feeding mechanism includes a feeding opening, a receiving plate, a fixing plate, and a hopper. The feeding opening is provided on the outer side of the hopper near the top. The receiving plate is fixedly connected to the inner side of the feeding opening. The hopper is provided on the outer side of the hopper. The fixing plates are movably connected to both sides of the hopper near the top. The end face of the fixing plate away from the hopper is fixedly connected to the outer side of the hopper.

[0008] Preferably, the feeding mechanism further includes a hydraulic rod, a fixed connecting seat, and a movable connecting seat. The fixed connecting seat is fixedly connected to the outer side of the bin near the bottom, and the movable connecting seat is fixedly connected to the end face of the hopper near the bin. A hydraulic rod is installed between the inner sides of the fixed connecting seat and the movable connecting seat.

[0009] Furthermore, the top of the hopper has an arc-shaped opening near the hopper, and a baffle is slidably connected to the inside of the arc-shaped opening. The bottom of the baffle extends to the inside of the hopper. A first connecting plate is fixedly connected to the end face of the baffle near the hopper, and a second connecting plate is fixedly connected to the end face of the hopper away from the hopper. A connecting rod is movably connected between the inner sides of the first and second connecting plates. A U-shaped plate is fixedly connected to the top of the hopper near the baffle. Several evenly distributed limiting wheels are installed on the inner side of the U-shaped plate, and the outer sides of the limiting wheels abut against the baffle. Two reinforcing plates are symmetrically fixedly connected to the bottom of the end face of the U-shaped plate away from the baffle, and the bottom of the reinforcing plates is fixedly connected to the top of the hopper.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the cooperation of the load-bearing ring, support pipe, pressure sensor, L-shaped plate and PLC control module, the weight of the coal itself can cause the load-bearing ring, spring and T-shaped rod to descend and press the pressure sensor. In this way, the pressure sensor can monitor the weight of the coal in the bin in real time, and the PLC controller receives the signal from the pressure sensor, so that the staff can clearly know the amount of coal remaining in the bin. This effectively solves the problem that the staff cannot clearly observe the material level in the coal bin. 2. Through the cooperation between the PLC control module, hopper, and hydraulic rod, when the coal in the bin is relatively light, the PLC control module controls the hydraulic rod to push the hopper upward, allowing the coal in the hopper to slide into the bin, thus achieving automatic feeding and effectively improving the convenience of use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the structure of the storage compartment in this utility model; Figure 4 This is a bottom view of the structure of the compartment in this utility model; Figure 5 This is a schematic diagram of the load-bearing ring in this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the load-bearing ring in this utility model; Figure 7 This is a schematic diagram of the structure of the baffle in this utility model; Figure 8 This is a schematic diagram of the U-shaped plate in this utility model.

[0012] In the diagram: 1. Bin body; 2. Outgoing material pipe; 3. Load-bearing ring; 4. Inner discharge pipe; 5. Support pipe; 6. T-shaped rod; 7. Limiting ring; 8. Pressure sensor; 9. Spring; 10. Support leg; 11. Feed opening; 12. Receiving plate; 13. Fixing plate; 14. Hopper; 15. Hydraulic rod; 16. Fixed connecting seat; 17. Movable connecting seat; 18. L-shaped plate; 19. Arc-shaped opening; 20. Baffle; 21. First connecting plate; 22. Connecting rod; 23. Second connecting plate; 24. U-shaped plate; 25. Limiting wheel; 26. Reinforcing plate; 27. PLC control module. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0014] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0015] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0016] like Figures 1 to 8 As shown, the device includes a silo body 1, with an outgoing material pipe 2 fixedly connected to the bottom of the silo body 1. The outgoing material pipe 2 is connected to the interior of the silo body 1. Evenly distributed support legs 10 are fixedly connected to the bottom of the silo body 1. A load-bearing ring 3 is provided on the inner side of the outgoing material pipe 2 near the bottom. A material level monitoring component is located at the bottom of the load-bearing ring 3. The material level monitoring component can monitor the amount of coal in the silo body 1. The material level monitoring component also includes a feeding mechanism for replenishing the silo body 1.

[0017] In this technical solution, the silo 1 is fed with coal through the feed opening 11 and discharged stably through the discharge pipe 2. In addition, the silo 1 in this technical solution is a common coal silo on the market.

[0018] like Figures 2-6 As shown, the material level monitoring component includes an inner discharge pipe 4, a support pipe 5, a T-shaped rod 6, and a limiting ring 7. The bottom of the load-bearing ring 3 is fixedly connected to the inner discharge pipe 4, and the bottom of the inner discharge pipe 4 extends to the inside of the outer discharge pipe 2. The bottom of the load-bearing ring 3 is fixedly connected to the evenly distributed support pipe 5. The bottom end of the support pipe 5 passes through the silo body 1 and is slidably connected to the silo body 1. A T-shaped rod 6 is provided below the support pipe 5, and the top end of the T-shaped rod 6 extends to the inside of the support pipe 5. A limiting ring 7 is fixedly connected to the outside of the support pipe 5 near the bottom. The material level monitoring component also includes a pressure sensor 8, a spring 9, an L-shaped plate 18, and a PLC control module 27. The bottom of the silo body 1 is fixedly connected to the evenly distributed L-shaped plate 18. A pressure sensor 8 is installed on the inside of the L-shaped plate 18 near the bottom. The top of the pressure sensor 8 abuts against the bottom of the T-shaped rod 6. A spring 9 is fixedly connected between the top end of the T-shaped rod 6 and the top of the inside of the support pipe 5. A PLC control module 27 is installed on the outside of the silo body 1 near the bottom.

[0019] The PLC control module 27 in this technical solution is a relatively mature technology in the prior art. Its installation method and usage method are common knowledge in this field, so they will not be described in detail in this technical solution. The pressure sensor 8 is linearly connected to the PLC control module 27, and the PLC control module 27 needs to be preset so that the next operation can be performed when the weight of the coal in the bin 1 is reduced to a predetermined value.

[0020] like Figures 2-8 As shown, the feeding mechanism includes a feeding opening 11, a receiving plate 12, a fixed plate 13, and a hopper 14. The feeding opening 11 is provided on the outer side of the silo body 1 near the top. The receiving plate 12 is fixedly connected to the inner side of the feeding opening 11. The hopper 14 is provided on the outer side of the silo body 1. The fixed plates 13 are movably connected to both sides of the hopper 14 near the top. The end face of the fixed plate 13 away from the hopper 14 is fixedly connected to the outer side of the silo body 1. The feeding mechanism also includes a hydraulic rod 15, a fixed connecting seat 16, and a movable connecting seat 17. The fixed connecting seat 16 is fixedly connected to the outer side of the silo body 1 near the bottom. The movable connecting seat 17 is fixedly connected to the end face of the hopper 14 near the silo body 1. The hydraulic rod 15 is installed between the inner sides of the fixed connecting seat 16 and the movable connecting seat 17.

[0021] The feeding mechanism can automatically pour the coal in the hopper 14 into the bin 1. Before feeding the bin 1, the coal needs to be placed in the hopper 14 in advance. The upper side of the hopper 14 is conical. The hydraulic rod 15 needs to be used with the corresponding equipment in actual use so that the hydraulic rod 15 can work stably.

[0022] like Figures 2-4 As shown, an arc-shaped opening 19 is provided at the top of the silo 1 near the hopper 14. A baffle 20 is slidably connected to the inner side of the arc-shaped opening 19. The bottom of the baffle 20 extends to the inner side of the silo 1. A first connecting plate 21 is fixedly connected to the end face of the baffle 20 near the hopper 14. A second connecting plate 23 is fixedly connected to the end face of the hopper 14 away from the silo 1. A connecting rod 22 is movably connected between the inner sides of the first connecting plate 21 and the second connecting plate 23. A U-shaped plate 24 is fixedly connected to the top of the silo 1 near the baffle 20. Several evenly distributed limiting wheels 25 are installed on the inner side of the U-shaped plate 24. The outer sides of the limiting wheels 25 abut against the baffle 20. Two reinforcing plates 26 are symmetrically fixedly connected to the bottom of the end face of the U-shaped plate 24 away from the baffle 20. The bottom of the reinforcing plates 26 is fixedly connected to the top of the silo 1.

[0023] In this technical solution, the baffle 20 serves to close the feed opening 11. In actual use, when the hopper 14 swings upward, it will also push the baffle 20 to rise. Because the connecting rod 22 is inclined, it will also give a lateral thrust when pushing the baffle 20, so jamming is inevitable. In order to solve this problem, the baffle 20 is held in place by the limit wheel 25 to prevent it from tilting, which can further improve the stability of use.

[0024] Working Principle: When using this technical solution, place the entire bin 1 in the desired location, install and debug it. Once debugging is complete, it can be used normally. First, put an appropriate amount of coal into the hopper 14. Next, power on the PLC control module 27. At this time, there is no coal in the bin 1, so the weight of the supporting ring 3 is relatively light. Therefore, the PLC control module 27 will activate the hydraulic rod 15 to push the hopper 14 to swing upwards. Simultaneously, as the hopper 14 swings upwards, it will push the baffle 20 upwards via the connecting rod 22, causing the feed opening 11 to open. This allows the coal in the hopper 14 to slide through the feed opening 11 into the bin 1 and fall onto the top of the supporting ring 3. Then, the hydraulic rod 15 retracts, pulling the hopper 14 downwards back to its initial position. When the weight on the top of the supporting ring 3 increases, it will compress the spring 9. The reaction force of spring 9 acts on T-shaped rod 6, allowing the load-bearing ring 3 to rise or fall to a certain extent without changing its position. The weight of the load-bearing ring 3 and the coal is entirely applied to the pressure sensor 8, enabling the pressure sensor 8 to monitor the remaining coal level in the bin 1. As the coal in the bin 1 is used, it gradually decreases, thus reducing its weight. When the weight reaches a predetermined level, the PLC control module 27 will again control the hydraulic rod 15 to extend or retract, causing the coal in the hopper 14 to be poured into the bin 1. This repetitive action effectively solves the problem of workers not being able to properly observe the coal level in the bin, which could lead to an empty bin or overflow when loading coal into the bin because the height of the coal level cannot be observed.

[0025] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. An automatic monitoring and replenishment control device for coal silos, comprising a silo body (1), characterized in that: The bottom of the silo body (1) is fixedly connected to an outgoing material pipe (2), which is connected to the inside of the silo body (1). The bottom of the silo body (1) is fixedly connected to evenly distributed support legs (10), and a load-bearing ring (3) is provided on the inner side of the outgoing material pipe (2) near the bottom. The material level monitoring component is located at the bottom of the load-bearing ring (3). The material level monitoring component can monitor the amount of coal in the bin (1). The material level monitoring component also includes a feeding mechanism for replenishing the bin (1).

2. The automatic monitoring and replenishment control device for coal silo level according to claim 1, characterized in that: The material level monitoring component includes an inner discharge pipe (4), a support pipe (5), a T-shaped rod (6), and a limiting ring (7). The bottom of the load-bearing ring (3) is fixedly connected to the inner discharge pipe (4), and the bottom of the inner discharge pipe (4) extends to the inside of the outer discharge pipe (2). The bottom of the load-bearing ring (3) is fixedly connected to a uniformly distributed support pipe (5). The bottom end of the support pipe (5) penetrates the silo body (1) and is slidably connected to the silo body (1). A T-shaped rod (6) is provided below the support pipe (5), and the top end of the T-shaped rod (6) extends to the inside of the support pipe (5). A limiting ring (7) is fixedly connected to the outside of the support pipe (5) near the bottom.

3. The automatic monitoring and replenishment control device for coal silo level according to claim 2, characterized in that: The material level monitoring component also includes a pressure sensor (8), a spring (9), an L-shaped plate (18), and a PLC control module (27). The bottom of the silo (1) is fixedly connected with evenly distributed L-shaped plates (18). The pressure sensor (8) is installed on the inner side of the L-shaped plate (18) near the bottom. The top of the pressure sensor (8) abuts against the bottom of the T-shaped rod (6). The top of the T-shaped rod (6) is fixedly connected to the top of the inner side of the support tube (5) with a spring (9). The PLC control module (27) is installed on the outer side of the silo (1) near the bottom.

4. The automatic monitoring and replenishment control device for coal silo level according to claim 1, characterized in that: The feeding mechanism includes a feeding opening (11), a receiving plate (12), a fixing plate (13), and a hopper (14). The feeding opening (11) is provided on the outer side of the silo (1) near the top. The receiving plate (12) is fixedly connected to the inner side of the feeding opening (11). The hopper (14) is provided on the outer side of the silo (1). The fixing plate (13) is movably connected to both sides of the hopper (14) near the top. The end face of the fixing plate (13) away from the hopper (14) is fixedly connected to the outer side of the silo (1).

5. The automatic monitoring and replenishment control device for coal silo level according to claim 4, characterized in that: The feeding mechanism also includes a hydraulic rod (15), a fixed connecting seat (16) and a movable connecting seat (17). The fixed connecting seat (16) is fixedly connected to the outer side of the bin (1) near the bottom. The movable connecting seat (17) is fixedly connected to the end face of the hopper (14) near the bin (1). The hydraulic rod (15) is installed between the inner side of the fixed connecting seat (16) and the movable connecting seat (17).

6. The automatic monitoring and replenishment control device for coal silo level according to claim 4, characterized in that: An arc-shaped opening (19) is provided at the top of the hopper (14) near the hopper (14). A baffle (20) is slidably connected to the inside of the arc-shaped opening (19). The bottom of the baffle (20) extends to the inside of the hopper (1). A first connecting plate (21) is fixedly connected to the end face of the baffle (20) near the hopper (14). A second connecting plate (23) is fixedly connected to the end face of the hopper (14) away from the hopper (1). The inner sides of the first connecting plate (21) and the second connecting plate (23) are connected. A connecting rod (22) is movably connected between the two parts. A U-shaped plate (24) is fixedly connected to the top of the hopper (1) near the baffle (20). Several evenly distributed limiting wheels (25) are installed on the inner side of the U-shaped plate (24). The outer side of the limiting wheels (25) abuts against the baffle (20). Two reinforcing plates (26) are symmetrically fixedly connected to the end face of the U-shaped plate (24) away from the baffle (20) near the bottom. The bottom of the reinforcing plates (26) is fixedly connected to the top of the hopper (1).

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