On-line raw coal volume weight detection device

Abstract

The raw coal on-line volume weight detection device comprises a workbench, a raw coal receiving unit, a weighing unit and a charging basket cleaning unit, the workbench comprises a support and a shell on the support, the raw coal receiving unit is arranged on the support, the weighing unit is arranged on the support, the charging basket cleaning unit is arranged on the support, and the raw coal receiving unit is arranged on the shell. The raw coal receiving unit can receive online raw coal and transfer the raw coal to the weighing unit to weigh the raw coal in a certain volume, the charging basket cleaning unit can clean a charging basket of the raw coal receiving unit to facilitate next weighing, the volume weight of the raw coal can be conveniently detected, the detection efficiency is high, and the detection result is accurate. The detection data updating frequency is high, production stocktaking can be conveniently carried out on the weight of raw coal stacked on a production site, different coal types and complex working conditions can be adapted, and the production efficiency and the product quality can be improved.

Description

Technical Field

[0001] The present invention belongs to the field of raw coal detection. Specifically, the present invention relates to an on-line bulk density detection device for raw coal. Background Art

[0002] In the cement and coal industries, the bulk density (also known as the stacking density) refers to the mass of coal per unit volume, usually expressed in tons per cubic meter (t / m 3 ) or kilograms per cubic meter (kg / m 3 ). The bulk density is one of the important parameters for evaluating the quality of coal, directly affecting the storage, transportation, separation, combustion efficiency and cost control of coal. As an important component of fuel and raw materials in the cement industry, the detection of the bulk density of raw coal is directly related to the quality of clinker burning, energy consumption control and production cost. The raw coal in cement plants usually comes from different mining areas and different suppliers, and there are significant differences in coal quality between different batches, with uneven quality. Moreover, the raw coal in cement plants is usually stacked in the cement production storage bin, and the total tons of stacked raw coal are not easy to estimate. Only the volume of stacked raw coal can be roughly estimated through a radar sensor.

[0003] In the prior art, the bulk density detection results are affected by various factors. For example, during transportation, different batches of raw coal may form local stratification (such as large particle coal concentrated at the bottom) due to stacking and loading / unloading. Manual sampling is likely to miss the stratification characteristics, resulting in the bulk density detection results deviating from the true value; during the crushing and transfer of raw coal, the particle size distribution changes greatly, and it is difficult to cover coal samples of different particle sizes at the same time, causing deviation in bulk density calculation. Moreover, the sampling representativeness of the existing detection technology for multi-batch mixed coal is insufficient, and uneven mixing leads to sampling distortion. The traditional bulk density detection needs to go through sampling, sample preparation, chemical analysis and report generation, and the whole process takes about 1 day. During this period, the raw coal may have entered the pre-homogenization yard or the batching system. If the detection results are abnormal, it is difficult to trace or adjust, lacking an on-line rapid detection means.

[0004] Therefore, in order to improve or solve at least one of the above problems, an on-line bulk density detection device for raw coal is provided, which can conveniently detect the bulk density of raw coal, has high detection efficiency and accurate detection results, has a high detection data update frequency, can conveniently conduct production inventory of the weight of stacked raw coal at the production site, can adapt to different coal types and complex working conditions, and is beneficial to improving production efficiency and product quality. Summary of the Invention

[0005] The present invention is made to solve the above problems, and the purpose is to provide an on-line bulk density detection device for raw coal, which can conveniently detect the bulk density of raw coal, has high detection efficiency and accurate detection results, has a high detection data update frequency, can conveniently conduct production inventory of the weight of stacked raw coal at the production site, can adapt to different coal types and complex working conditions, and is beneficial to improving production efficiency and product quality. To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] The present invention provides an on-line bulk density detection device for raw coal, which has the following characteristics: it includes a workbench, a raw coal receiving unit, a weighing unit, and a bucket cleaning unit. The workbench includes a support and a housing on the support. The raw coal receiving unit is arranged on the support, the weighing unit is arranged on the support, and the bucket cleaning unit is arranged on the support.

[0007] In the on-line bulk density detection device for raw coal provided by the present invention, it may also have the following characteristics: a feeding funnel is provided on the support, and the feeding funnel is located below the raw coal receiving unit; a feeding funnel is provided on the support, and the feeding funnel is located above the raw coal receiving unit.

[0008] In the on-line bulk density detection device for raw coal provided by the present invention, it may also have the following characteristics: the raw coal receiving unit includes a rotary lifting platform, a bucket support, a bucket collar, and a bucket. The rotary lifting platform is arranged on the support, the bucket support is arranged on the rotary lifting platform, the bucket collar is movably arranged on the bucket support, and the bucket is movably inserted into the bucket collar.

[0009] In the on-line bulk density detection device for raw coal provided by the present invention, it may also have the following characteristics: the rotary lifting platform includes a bottom plate, a rotary seat, a rotary drive motor, and a lifting cylinder. The bottom plate is arranged on the support, the rotary seat is arranged on the bottom plate, the rotary drive motor is connected to the rotary seat, and the lifting cylinder is arranged on the rotary seat and connected to the bucket support.

[0010] In the on-line bulk density detection device for raw coal provided by the present invention, it may also have the following characteristics: a bucket rotary motor is provided on the bucket support, the bucket rotary motor is connected to the bucket collar, a limit ring is provided on the bucket, and the limit ring abuts against the bucket collar.

[0011] In the on-line bulk density detection device for raw coal provided by the present invention, it may also have the following characteristics: the raw coal receiving unit further includes a scraper assembly, and the scraper assembly includes a scraper and a scraper drive cylinder. The scraper drive cylinder is arranged on the bucket support, and the scraper is connected to the scraper drive cylinder.

[0012] In the on-line bulk density detection device for raw coal provided by the present invention, it may also have the following characteristics: a counterweight is further provided on one side of the bucket support away from the bucket.

[0013] In the on-line bulk density detection device for raw coal provided by the present invention, it may also have the following characteristics: the weighing unit includes a weighing chassis, a weighing sensor, and a weighing tray. The weighing chassis is arranged on the support, the weighing sensor is arranged on the weighing chassis, and the weighing tray is arranged on the weighing sensor.

[0014] In the on-line bulk density detection device for raw coal provided by the present invention, it may further have the following characteristics. The bucket cleaning unit includes a cleaning bucket, a cleaning assembly, and a cleaning bracket. The cleaning bracket is arranged on the bracket. The cleaning bracket includes a fixed plate, a lifting plate, and a lifting cylinder. The fixed plate is arranged on the bracket, the lifting cylinder is arranged on the fixed plate, the lifting cylinder is connected to the lifting plate, the cleaning bucket is arranged on the lifting plate, and the cleaning assembly is arranged in the cleaning bucket.

[0015] In the on-line bulk density detection device for raw coal provided by the present invention, it may further have the following characteristics. The cleaning assembly includes a connecting plate, a cleaning cylinder, and a cleaning nozzle. One side of the connecting plate is connected to the cleaning bucket, the other side of the connecting plate is connected to the cleaning cylinder, and the cleaning nozzle is connected to the cleaning cylinder.

[0016] The technical effect of the present invention is as follows: The on-line bulk density detection device for raw coal provided by the present invention includes a workbench, a raw coal receiving unit, a weighing unit, and a bucket cleaning unit. The workbench includes a bracket and a housing on the bracket. The raw coal receiving unit is arranged on the bracket, the weighing unit is arranged on the bracket, and the bucket cleaning unit is arranged on the bracket. The raw coal receiving unit can receive the raw coal in the warehouse and transfer the raw coal to the weighing unit to complete the weighing of the mass of the raw coal within a certain volume. The bucket cleaning unit can clean the bucket of the raw coal receiving unit for the next weighing, which can facilitate the detection of the bulk density of the raw coal, with high detection efficiency and accurate detection results, high detection data update frequency, can facilitate the production inventory of the piled raw coal weight at the production site, can adapt to different coal types and complex working conditions, and is beneficial to improving production efficiency and product quality.

[0017] Therefore, the on-line bulk density detection device for raw coal provided by the present invention can facilitate the detection of the bulk density of the raw coal, with high detection efficiency and accurate detection results, high detection data update frequency, can facilitate the production inventory of the piled raw coal weight at the production site, can adapt to different coal types and complex working conditions, and is beneficial to improving production efficiency and product quality. Description of the Drawings

[0018] This specification includes the following drawings, and the shown contents are respectively:

[0019] Figure 1 is the structural schematic diagram of the on-line bulk density detection device for raw coal in the embodiment of the present invention Figure 1 ;

[0020] Figure 2 is the structural schematic diagram of the on-line bulk density detection device for raw coal in the embodiment of the present invention Figure 2 ;

[0021] Figure 3 is the structural schematic diagram of the raw coal receiving unit in the embodiment of the present invention;

[0022] Figure 4is a schematic structural diagram of a weighing unit in an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the barrel cleaning unit in an embodiment of the present invention.

[0024] The following are marked in the figure: workbench 10, bracket 11, shell 12, discharge funnel 13, feed funnel 14, raw coal receiving unit 20, rotary lifting platform 21, bottom plate 211, rotary seat 212, rotary drive motor 213, lifting cylinder 214, barrel bracket 22, barrel collar 23, barrel 24, limit ring 241, barrel rotation motor 25, scraper assembly 26 , scraper-261, scraper drive cylinder-262, counterweight block-27, weighing unit-30, weighing base-31, weighing sensor-32, weighing tray-33, barrel cleaning unit-40, cleaning barrel-41, cleaning assembly-42, connecting plate-421, cleaning cylinder-422, cleaning nozzle-423, cleaning bracket-43, fixing plate-431, lifting plate-432, lifting cylinder-433. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the specific implementation methods of the present invention through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate their implementation.

[0026] Figure 1 This is a schematic diagram of the structure of the raw coal online bulk density detection device in an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the raw coal online bulk density detection device in an embodiment of the present invention. Figure 2 .

[0027] like Figure 1 and Figure 2 As shown, the online bulk density detection device for raw coal provided by the present invention includes a workbench 10, a raw coal receiving unit 20, a weighing unit 30 and a barrel cleaning unit 40. The workbench 10 includes a bracket 11 and a shell 12 on the bracket 11. The raw coal receiving unit 20 is arranged on the bracket 11, the weighing unit 30 is arranged on the bracket 11, and the barrel cleaning unit 40 is arranged on the bracket 11. The raw coal receiving unit 20 can receive the raw coal online and transfer the raw coal to the weighing unit 30 to complete the weighing of the raw coal mass within a certain volume. The barrel cleaning unit 40 can clean the barrel of the raw coal receiving unit 20 for the next weighing, and can facilitate the detection of the bulk density of raw coal. The detection efficiency is high and the detection results are accurate. The detection data is updated frequently, and it is convenient to conduct production inventory of the weight of raw coal piled up at the production site. It can adapt to different types of coal and complex working conditions, which is conducive to improving production efficiency and product quality.

[0028] As shown Figure 1 in the figure, a blanking funnel 13 is provided on the support 11. The blanking funnel 13 is located below the raw coal receiving unit 20 and is used to export the raw coal after weighing from the on-line bulk density detection device for raw coal. An inlet funnel 14 is provided on the support 11. The inlet funnel 14 is located above the raw coal receiving unit 20 and can introduce the on-line raw coal into the raw coal receiving unit 20. The outside of the support 10 is sealed by a housing 12 to separate the inside of the on-line bulk density detection device for raw coal from the external environment, so that the on-line bulk density detection device for raw coal provided by the present invention can adapt to various complex working conditions, such as high humidity and high dust environments, reduce the influence of the surrounding environment on the bulk density detection of raw coal, and is beneficial to improving the accuracy of the detection results.

[0029] Figure 3 Figure 8 is a schematic structural view of the raw coal receiving unit in the embodiment of the present invention.

[0030] As shown Figure 3 in the figure, the raw coal receiving unit 20 includes a rotary lifting platform 21, a bucket support 22, a bucket collar 23 and a bucket 24. The rotary lifting platform 21 is arranged on the support 11, the bucket support 22 is arranged on the rotary lifting platform 21, the bucket support 22 is in a "Y" shape, the bucket collar 23 is movably arranged on the bucket support 22, the bucket 24 is movably inserted into the bucket collar 23, the bucket 24 is located below the inlet funnel 14, and the inlet funnel 14 can convey the raw coal into the bucket 24. The volume of the bucket is 5L. The rotary lifting platform 21 can transfer the bucket 24 filled with raw coal to the weighing unit 30 to detect the bulk density of the raw coal in real time, with high detection efficiency, accurate detection results and high detection data update frequency.

[0031] As shown Figure 3 in the figure, the rotary lifting platform 21 includes a bottom plate 211, a rotary seat 212, a rotary drive motor 213 and a lifting cylinder 214. The bottom plate 211 is arranged on the support 11, the rotary seat 212 is arranged on the bottom plate 211, the rotary drive motor 213 is connected to the rotary seat 212, the lifting cylinder 214 is arranged on the rotary seat 212, and the lifting cylinder 214 is connected to the bucket support 22, so that the rotary lifting platform 21 can drive the bucket support 22 to rotate or lift, drive the bucket 24 to rotate or lift, and improve the reliability of the structure.

[0032] As shown Figure 3As shown in the figure, a bucket rotation motor 25 is provided on the bucket support 22. The motor shaft of the bucket rotation motor 25 is connected to the bucket collar 23. The bucket rotation motor 25 can drive the bucket collar 23 to rotate. A limit ring 241 is provided on the bucket 24. The limit ring 241 is located above the bucket collar 23 and abuts against the bucket collar 23, thereby preventing the bucket 24 from falling off the bucket collar 23 and avoiding the bucket 24 from dropping, which may affect the detection process. The bucket rotation motor 25 can drive the bucket collar 23 to rotate, thereby shaking the bucket 24 during the process of receiving raw coal, enabling the raw coal to be evenly filled in the bucket 24, which is beneficial to improving the accuracy of the detection result and reducing the detection error.

[0033] As Figure 3 shown in the figure, the raw coal receiving unit 20 further includes a scraper assembly 26. The scraper assembly 26 includes a scraper 261 and a scraper driving cylinder 262. The scraper driving cylinder 262 is arranged on the bucket support 22. The scraper 261 is connected to the scraper driving cylinder 262. The scraper driving cylinder 262 can drive the scraper 261 to perform telescopic movement, enabling the scraper 261 to pass above the bucket 24 and push away the raw coal that exceeds the height of the bucket 24. The pushed-away raw coal falls into the feeding funnel 13, avoiding waste. At the same time, it is beneficial to improve the accuracy of the detection result and reduce the detection error.

[0034] As Figure 3 shown in the figure, a counterweight 27 is further provided on one side of the bucket support 22 away from the bucket 24. The counterweight 27 can keep the bucket support 22 balanced, avoiding the bucket support 22 from being crushed by the bucket 24 after being filled with raw coal, and preventing the bucket support 22 from tilting, which may affect the subsequent bulk density detection process, and improving the reliability of the structure.

[0035] Figure 4 This is a schematic structural diagram of the weighing unit in the embodiment of the present invention.

[0036] As Figure 4 shown in the figure, the weighing unit 30 is arranged on the support 11, on one side of the rotary lifting platform 21, and includes a weighing chassis 31, weighing sensors 32, and a weighing tray 33. The weighing chassis 31 is arranged on the support 11. The weighing sensors 32 are arranged on the weighing chassis 31. The weighing tray 33 is arranged on the weighing sensors 32. When the bucket 24 is placed on the weighing tray 33, the weighing unit 30 can weigh the total weight of the bucket 24 and the raw coal in the bucket 24, and can obtain the weight of the raw coal in the bucket 24, thereby facilitating the calculation of the bulk density of the raw coal. The weighing sensors 32 are connected to the laboratory host computer and send the weight data to the laboratory host computer and transmit it into the laboratory.

[0037] Figure 5 This is a schematic structural diagram of the bucket cleaning unit in the embodiment of the present invention.

[0038] AsFigure 5 As shown in the figure, the barrel cleaning unit 40 is arranged on the bracket 11, on the other side of the rotary lifting platform 21. The barrel cleaning unit 40 includes a cleaning barrel 41, a cleaning component 42 and a cleaning bracket 43. The cleaning bracket 43 is arranged on the bracket 11. The cleaning bracket 43 includes a fixing plate 431, a lifting plate 432 and a lifting cylinder 433. The fixing plate 431 is arranged on the bracket 11. The lifting cylinder 433 is arranged on the fixing plate 431. The lifting cylinder 433 is connected to the lifting plate 432. Round holes are provided on the fixing plate 431 and the lifting plate 432. The cleaning barrel is inserted into the round holes, and the cleaning barrel 41 is connected to the lifting plate 432. The lifting cylinder 433 can drive the lifting plate 432 to move up and down, thereby driving the cleaning barrel 41 to move up and down. The cleaning component 42 is arranged inside the cleaning barrel 41.

[0039] The cleaning component 42 includes a connecting plate 421, a cleaning cylinder 422 and a cleaning nozzle 423. One side of the connecting plate 421 is connected to the inner wall of the cleaning barrel 41. The other side of the connecting plate 421 is connected to the cylinder body of the cleaning cylinder 422. The cleaning nozzle 423 is connected to the telescopic end of the cleaning cylinder 422. The cleaning nozzle 423 is connected to the production line water pipe, so that the cleaning cylinder 422 can drive the cleaning nozzle 423 to move up and down, which is beneficial to improving the cleaning effect.

[0040] When the raw coal bulk density detection device provided by the present invention is used to detect the bulk density of raw coal, the rotary lifting platform 21 moves the barrel 24 to below the feeding funnel 14 through the barrel bracket 22. The raw coal falls into the barrel 24 through the feeding funnel 14. During this process, the lifting cylinder 214 is in the extended state. The limit ring 241 on the barrel 24 abuts against the barrel collar 23. The barrel rotation motor 25 drives the barrel collar 23 to rotate in a positive and negative cycle, shaking the barrel 24 to make the raw coal evenly fill the barrel 24. After the raw coal evenly fills the barrel 24, the barrel rotation motor 25 stops working. The barrel 24 remains horizontal under the action of gravity. The scraper driving cylinder 262 pushes the scraper 261 to push away the raw coal exceeding the height of the barrel 24. The rotation driving motor 213 starts, driving the barrel bracket 22 to rotate, moving the barrel 24 above the weighing tray 33. The lifting cylinder 214 retracts, the barrel 24 descends, and the bottom contacts the weighing tray 33. The lifting cylinder 214 continues to retract, and the limit ring 241 on the barrel 24 separates from the barrel collar 23. The barrel 24 presses on the weighing tray 33 under the action of gravity. The weighing sensor 32 weighs the total weight of the barrel 24 and the raw coal in the barrel 24, sends the weight data to the laboratory host computer, and transmits it into the laboratory, so as to obtain the weight of the raw coal within the volume of the barrel 24, and then calculate the bulk density of the raw coal. It can conveniently detect the bulk density of raw coal, with high detection efficiency and accurate detection results. The detection data update frequency is high, which can conveniently conduct production inventory of the piled raw coal weight at the production site, can adapt to different coal types and complex working conditions, and is beneficial to improving production efficiency and product quality.

[0041] After the weighing is completed, the lifting cylinder 214 extends, and the barrel collar 23 abuts against the limit ring 241 on the barrel 24. The barrel rotation motor 25 drives the barrel collar 23 to rotate, tilting the barrel 24 to pour out the raw coal inside the barrel 24. The raw coal falls into the feeding funnel 13 for the next weighing.

[0042] After multiple weighings, there is raw coal powder remaining on the inner wall of the barrel 24, which affects the subsequent test results. At this time, the rotating lifting platform 21 moves the barrel 24 to the barrel cleaning unit 40 through the barrel support 22. The barrel rotation motor 25 drives the barrel collar 23 to rotate, flipping the barrel 24. During this process, the lifting cylinder 433 extends, driving the lifting plate 432 and the cleaning barrel 41 to rise, so that the barrel 24 is inverted on the cleaning barrel 41. The connecting plate 421 can support the barrel 24 to prevent the barrel 24 from falling into the cleaning barrel 41. The cleaning cylinder 422 is activated, driving the cleaning nozzle 423 to rise. The cleaning nozzle 423 sprays water during the rising process to wash the inner wall of the barrel 24. After washing, the barrel 24 remains inverted for a period of time so that the water droplets inside the barrel 24 can all fall, avoiding affecting the subsequent test results. The cleaning frequency depends on the actual production needs. When the detection requirement is relatively fast, the washed barrel 24 can also be directly removed and a clean barrel 24 can be replaced to quickly carry out the next weighing. The cleaning barrel 41 is provided with a drain port and a slag discharge port for discharging the waste water and waste residue during the cleaning process to avoid affecting the cleaning effect.

[0043] Functions and effects of the embodiment

[0044] The on-line bulk density detection device for raw coal provided by the present invention includes a workbench, a raw coal receiving unit, a weighing unit, and a barrel cleaning unit. The workbench includes a bracket and a housing on the bracket. The raw coal receiving unit is arranged on the bracket, the weighing unit is arranged on the bracket, and the barrel cleaning unit is arranged on the bracket. The raw coal receiving unit can receive the raw coal in the warehouse and transfer the raw coal to the weighing unit to complete the weighing of the mass of the raw coal within a certain volume. The barrel cleaning unit can clean the barrel of the raw coal receiving unit for the next weighing, which can facilitate the detection of the bulk density of the raw coal, with high detection efficiency, accurate detection results, and a high update frequency of the detection data. It can facilitate the production inventory of the piled raw coal weight at the production site, can adapt to different coal types and complex working conditions, and is beneficial to improving production efficiency and product quality.

[0045] When the raw coal bulk density is tested by the raw coal online bulk density testing device provided by the present invention, the rotating jacking platform 21 moves the bucket 24 to the bottom of the feeding funnel 14 through the bucket bracket 22, and the raw coal falls into the bucket 24 through the feeding funnel 14. During this process, the jacking cylinder 214 is in an extended state, and the limit ring 241 on the bucket 24 abuts against the bucket collar 23. The bucket rotating motor 25 drives the bucket collar 23 to rotate in a forward and reverse cycle, shaking the bucket 24 so that the raw coal is evenly filled in the bucket 24. After the raw coal evenly fills the bucket 24, the bucket rotating motor 25 stops working, and the bucket 24 remains horizontal under the action of gravity. The scraper driving cylinder 262 pushes the scraper 261 to push away the raw coal that exceeds the height of the bucket 24, and the rotary driving motor 213 starts to drive the bucket bracket 22 to The material barrel 24 is rotated to move above the weighing tray 33, the lifting cylinder 214 is retracted, the material barrel 24 drops, and the bottom contacts the weighing tray 33. The lifting cylinder 214 continues to retract, and the limit ring 241 on the material barrel 24 is separated from the material barrel ring 23. The material barrel 24 is pressed on the weighing tray 33 under the action of gravity, and the weighing sensor 32 weighs the total weight of the material barrel 24 and the raw coal in the material barrel 24, and sends the weight data to the laboratory host computer and transmits it to the laboratory, so as to obtain the weight of the raw coal in the volume of the material barrel 24, and then calculate the bulk density of the raw coal, and detect the bulk density of the raw coal in real time. The detection efficiency is high and the detection results are accurate. The detection data is updated frequently, and can capture the bulk density changes of coal in flow or storage, meet the needs of rapid response to coal production, and are conducive to improving production efficiency and product quality.

[0046] After weighing is completed, the lifting cylinder 214 extends, the barrel ring 23 abuts against the limit ring 241 on the barrel 24, and the barrel rotating motor 25 drives the barrel ring 23 to rotate, tilting the barrel 24, pouring out the raw coal in the barrel 24, and the raw coal falls into the discharge funnel 13 for the next weighing.

[0047] After multiple weighings, raw coal powder remains on the inner wall of the bucket 24, which affects the subsequent test results. At this time, the rotary lifting platform 21 moves the bucket 24 to the bucket cleaning unit 40 through the bucket support 22. The bucket rotation motor 25 drives the bucket collar 23 to rotate, turning the bucket 24 over. During this process, the lifting cylinder 433 extends, driving the lifting plate 432 and the cleaning bucket 41 to rise, so that the bucket 24 is inverted on the cleaning bucket 41. The connecting plate 421 can support the bucket 24 to prevent the bucket 24 from falling into the cleaning bucket 41. The cleaning cylinder 422 is activated, driving the cleaning nozzle 423 to rise. The cleaning nozzle 423 sprays water during the rising process to wash the inner wall of the bucket 24. After washing, the bucket 24 remains inverted for a period of time so that the water droplets in the bucket 24 can all fall, avoiding affecting the subsequent test results. The cleaning frequency depends on the actual production needs. When the testing requirement is relatively fast, the washed bucket 24 can also be directly removed and a clean bucket 24 can be replaced to quickly carry out the next weighing.

[0048] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. An on-line bulk density detection device for raw coal, characterized in that, It includes a workbench (10), a raw coal receiving unit (20), a weighing unit (30) and a bucket cleaning unit (40). The workbench (10) includes a bracket (11) and a housing (12) on the bracket (11). The raw coal receiving unit (20) is arranged on the bracket (11), the weighing unit (30) is arranged on the bracket (11), and the bucket cleaning unit (40) is arranged on the bracket (11).

2. The on-line bulk density detection device for raw coal according to claim 1, wherein, A blanking funnel (13) is provided on the bracket (11), and the blanking funnel (13) is located below the raw coal receiving unit (20); an inlet funnel (14) is provided on the bracket (11), and the inlet funnel (14) is located above the raw coal receiving unit (20).

3. The on-line bulk density detection device for raw coal according to claim 1, wherein The raw coal receiving unit (20) includes a rotary lifting platform (21), a bucket bracket (22), a bucket collar (23) and a bucket (24). The rotary lifting platform (21) is arranged on the bracket (11), the bucket bracket (22) is arranged on the rotary lifting platform (21), the bucket collar (23) is movably arranged on the bucket bracket (22), and the bucket (24) is movably inserted into the bucket collar (23).

4. The on-line bulk density detection device for raw coal according to claim 3, wherein, The rotary lifting platform (21) includes a bottom plate (211), a rotary seat (212), a rotary drive motor (213) and a lifting cylinder (214). The bottom plate (211) is arranged on the bracket (11), the rotary seat (212) is arranged on the bottom plate (211), the rotary drive motor (213) is connected to the rotary seat (212), and the lifting cylinder (214) is arranged on the rotary seat (212) and connected to the bucket bracket (22).

5. The on-line bulk density detection device for raw coal according to claim 4, wherein, A bucket rotary motor (25) is provided on the bucket bracket (22), the bucket rotary motor (25) is connected to the bucket collar (23), a limit ring (241) is provided on the bucket (24), and the limit ring (241) abuts against the bucket collar (23).

6. The on-line bulk density detection device for raw coal according to claim 5, characterized in that, The raw coal receiving unit (20) further includes a scraper assembly (26). The scraper assembly (26) includes a scraper (261) and a scraper drive cylinder (262). The scraper drive cylinder (262) is arranged on the bucket bracket (22), and the scraper (261) is connected to the scraper drive cylinder (262).

7. The on-line bulk density detection device for raw coal according to claim 3, wherein A counterweight (27) is further provided on one side of the bucket bracket (22) away from the bucket (24).

8. The on-line bulk density detection device for raw coal according to claim 1, characterized in that, The weighing unit (30) includes a weighing chassis (31), weighing sensors (32) and a weighing tray (33). The weighing chassis (31) is arranged on the bracket (11), the weighing sensors (32) are arranged on the weighing chassis (31), and the weighing tray (33) is arranged on the weighing sensors (32).

9. The on-line bulk density detection device for raw coal according to claim 1, characterized in that, The barrel cleaning unit (40) includes a cleaning barrel (41), a cleaning component (42), and a cleaning bracket (43). The cleaning bracket (43) is arranged on the bracket (11). The cleaning bracket (43) includes a fixing plate (431), a lifting plate (432), and a lifting cylinder (433). The fixing plate (431) is arranged on the bracket (11). The lifting cylinder (433) is arranged on the fixing plate (431). The lifting cylinder (433) is connected to the lifting plate (432). The cleaning barrel (41) is arranged on the lifting plate (432). The cleaning component (42) is arranged inside the cleaning barrel (41).

10. The on-line bulk density detection device for raw coal according to claim 9, characterized in that, The cleaning component (42) includes a connecting plate (421), a cleaning cylinder (422), and a cleaning nozzle (423). One side of the connecting plate (421) is connected to the cleaning barrel (41). The other side of the connecting plate (421) is connected to the cleaning cylinder (422). The cleaning nozzle (423) is connected to the cleaning cylinder (422).

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