Detection table online device for coal granularity measurement
The integrated testing station design enables automated and precise measurement of coal particle size, solving the problems of low efficiency, poor accuracy, and easy destruction of sample representativeness in existing technologies, thus achieving efficient and accurate coal particle size detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-04-03
AI Technical Summary
Existing coal particle size measurement processes are cumbersome, time-consuming, have low accuracy and repeatability, are easily affected by human and environmental factors, cannot achieve automated continuous operation, and are prone to damage to sample representativeness.
An integrated testing station was designed, which includes a feeding tray, screening and weighing functions. By integrating heating, drying, screening and weighing into one, and integrating a net weight weighing platform, it can remove moisture in situ and accurately measure the total weight of dry coal. It uses airflow and heating wire to prevent caking, and a servo motor drives the screening and weighing platforms to work together to achieve automated operation.
It significantly improves detection efficiency and accuracy, reduces human intervention, avoids the influence of the external environment, ensures the accuracy and consistency of measurement results, and adapts to the detection needs of different qualification standards.
Smart Images
Figure CN121783788A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of mineral particle material detection technology, specifically to an online detection platform device for measuring coal particle size. Background Technology
[0002] As is well known, when measuring the particle size of coal minerals, screening or weighing are usually performed. This requires multiple pieces of equipment and multiple manual transfers to complete the entire process from drying and screening to weighing. The operation is cumbersome and time-consuming. Furthermore, the materials are easily lost, contaminated, or affected by environmental humidity during the transfer process, resulting in poor accuracy, low repeatability, and low efficiency. This makes it difficult to meet the needs of rapid and accurate industrial testing.
[0003] In existing technologies for measuring coal particle size, the process is fragmented and inefficient. Drying, screening, and weighing steps need to be completed on different equipment, and intermediate links rely on manual operation, which is not only labor-intensive but also has a long analysis cycle. Secondly, the measurement accuracy is greatly affected by human and environmental factors. Losses, moisture absorption, or contamination can easily occur during material transfer and exposure, which seriously affects the accuracy of the final particle size distribution and weight data. Furthermore, the functional integration is low. Existing equipment usually only has a single function and cannot achieve automated continuous operation, resulting in insufficient intelligence. Finally, the representativeness of the sample is easily destroyed. Multiple manual processing may change the original distribution of particles, resulting in the test results not being able to truly reflect the actual condition of the batch of materials. Based on the above, we found that existing coal particle size measurement solutions are difficult to avoid the above problems simultaneously. Therefore, we propose an integrated design that combines pretreatment, screening, and collection in one unit. The coal powder is heated to completely remove moisture, avoiding the impact of moisture on weight and screening efficiency. An initial weighing is then performed to obtain the total dry coal weight. After screening, qualified fine powder and screened coarse particles are retained separately, and the coarse and fine particles are weighed independently to accurately calculate the distribution ratio of coal powder with different particle sizes. Summary of the Invention
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides an online detection platform for coal particle size measurement, which automates the entire detection process, significantly reduces manual intervention, improves detection efficiency and consistency, and enhances measurement accuracy and precision.
[0006] (II) Technical Solution
[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an online detection platform for measuring coal particle size, comprising a platform box, a first tray fixedly connected to the top of the inner side of the platform box, a second tray provided in the middle of the inner side of the platform box, and a third tray fixedly connected to the bottom of the inner side of the platform box. The first tray includes a dispensing tray, a connecting ring is fixedly connected to the top of the dispensing tray, a support frame is provided on the outside of the connecting ring, a hollow plug is inserted into the bottom of the inner side of the dispensing tray, an integrally formed branch pipe is provided on the outside of the hollow plug, and an opening and closing electric cylinder is provided on the top of the inner side of the platform box. The opening and closing electric cylinder is located on the inner side of the hollow plug, and the telescopic end of the opening and closing electric cylinder is fixedly connected to the top of the inner side of the hollow plug. A net weight weighing platform is fixedly connected to the top of the inner side of the platform box, and the top of the net weight weighing platform is fixedly connected to the support frame. The second pallet includes an upper weighing platform, a sieve plate is fixedly connected to the top of the upper weighing platform, a mesh plate is installed on the inner side of the sieve plate, and sliding sleeves are fixedly connected to the front and rear sides of the upper weighing platform.
[0008] Using the above technical solution, a first tray is set up for placing the coal powder sample to be tested. After placement, the sample will remain inside the tray, where the coal powder can be heated and dried. The total weight of the sample is then measured using a net weight weighing platform. Integrating the heating function with the weighing platform enables in-situ removal of moisture from the coal powder and accurate measurement of the total dry weight, fundamentally avoiding the influence of the external environment on measurement accuracy. After the initial weighing is completed, the tray is lifted by an opening and closing electric cylinder, creating a gap between the hollow plug and the tray. Adjusting the gap size can also adjust the sample falling speed. When the sample falls to the second tray, it will land in the sieve tray directly below. As the sieve tray vibrates, the sample on the screen will be sieved. Particles passing through the screen will fall into the third tray. The samples remaining in the second and third trays can then be weighed separately using the upper and lower weighing platforms to accurately obtain the specific gravity of the qualified fine powder. Furthermore, the screen in the sieve tray can be replaced as needed to adjust the mesh size to suit different qualification standards.
[0009] The present invention is further configured such that: a hollow frame is fixedly connected to the top of the inner side of the platform box, the top of the hollow frame is fixedly connected to the bottom of the opening and closing electric cylinder, a slide is fixedly connected to the inner side of the hollow plug, and the inner side of the slide is slidably connected to the opening and closing electric cylinder.
[0010] By adopting the above technical solution, a hollow frame is set up to support the bottom of the opening and closing electric cylinder without causing too much impact on the falling sample. The slide is set up to assist in connecting the opening and closing electric cylinder and the hollow plug. When the hollow plug is pushed and pulled vertically, it can slide along the opening and closing electric cylinder and block the airflow to prevent the airflow from flowing through the gap between the opening and closing electric cylinder and the hollow plug.
[0011] The invention is further configured such that: an airflow hole is provided at the top of the hollow plug, a plurality of exhaust holes are provided on the outer side of the branch pipe, a baffle is fixedly connected to the inner side of the exhaust holes, a fan device is fixedly connected to the rear side of the platform, a flexible hose is fixedly connected to the air outlet end of the fan device, and the side of the flexible hose near the hollow plug is bolted to the top of the hollow plug.
[0012] By adopting the above technical solution, by setting up a fan device, a small amount of airflow can be continuously blown into the hollow plug through a hose during normal operation, and the airflow can be discharged through the branch pipe and exhaust hole. This allows the sample to be turned over by the airflow and helps to remove the moisture in it. At the same time, the continuously turned sample is less likely to dry and clump due to the internal moisture sticking together.
[0013] The present invention is further configured such that: a driven ring is provided at the top of the inner side of the delivery tray, a toothed ring is fixedly connected to the outer side of the driven ring, a sub-frame is fixedly connected to the outer side of the support frame, a reduction motor is fixedly connected to the inner side of the sub-frame, a gear is fixedly connected to the output end of the reduction motor, the gear and the toothed ring are meshed, and a paddle is fixedly connected to the bottom of the driven ring.
[0014] By adopting the above technical solution, the driven ring can rotate inside the delivery tray, and the geared motor is used to control the rotation of the gear ring and the driven ring through gears. While rotating, the arc-shaped paddle will continuously paddle the sample located in the delivery tray to prevent it from clumping and make it more evenly exposed to airflow, so as to optimize the drying effect.
[0015] The present invention is further configured such that: a limiting sleeve is fixedly connected to the top of the support frame, a roller is rotatably connected to the inner side of the limiting sleeve, the inner side of the limiting sleeve is slidably connected to the outer side of the top of the driven ring through the roller, and a heating wire is installed on the inner side of the paddle.
[0016] By adopting the above technical solution, a limiting sleeve is set to support and connect the driven ring, and the driven ring can rotate circumferentially along the inner side of the limiting sleeve when driven by the reduction motor, gear and gear ring. The heating wire located in the tweezers can continuously heat and dry the sample when the tweezers stir the sample, so as to assist the airflow to further improve the drying efficiency and reduce the impact of humidity on the detection accuracy.
[0017] The present invention is further configured such that: a slide rod is slidably connected to the inner side of the slide sleeve; a side plate is fixedly connected to the right side of the slide rod; a servo motor is fixedly connected to the left side of the side plate; a turntable is fixedly connected to the output end of the servo motor; a crank is rotatably connected to the front side of the turntable; and the left side of the crank is rotatably connected to the upper weighing platform.
[0018] Using the above technical solution, a servo motor is set up to drive the turntable to rotate. The crank connected to it will push and pull the weighing platform back and forth, thereby generating vibration to sieve the sample stored in the sieve tray. When the weighing platform is displaced, it will move along the slide rod through the sliding sleeve to limit the movement. At the same time, the side plate is connected to the two slide rods to provide support for the servo motor.
[0019] The present invention is further configured such that: a rotating frame is fixedly connected to the left side of the sliding rod, a side frame is rotatably connected to the left side of the rotating frame, the left side of the side frame is fixedly connected to the platform, a tilting electric cylinder is rotatably connected to the left side of the inner side of the platform, a transmission frame is fixedly connected to the bottom of the left sliding sleeve, and the output end of the tilting electric cylinder is rotatably connected to the transmission frame.
[0020] By adopting the above technical solution, a rotating frame is set up in conjunction with a side frame to connect the slide rod to the inside of the platform box, and the slide rod and the second tray can rotate along the inside of the platform box. The telescopic end of the tilting electric cylinder is usually in the extended state, and the second tray is fixed in a horizontal state by the transmission frame. After the weighing is completed, the telescopic end of the tilting electric cylinder can be retracted, so that it drags the transmission frame and the rotating frame connected to it to rotate along the side frame, so that the upper weighing platform tilts and the sample in the sieve tray is poured out.
[0021] The present invention is further configured such that: a return spring is fixedly connected between the rotating frame and the upper weighing platform, the return spring is sleeved on the outside of the slide rod, and a guide bucket is fixedly connected to the bottom of the upper weighing platform.
[0022] By adopting the above technical solution, a reset spring is set up so that when the upper weighing platform moves along the slide rod through the sliding sleeve, the reset spring performs compression and reset actions to assist the movement of the upper weighing platform. The set guide bucket is used to guide the sample under the screen to fall into the third tray after being guided.
[0023] The present invention is further configured such that: the third pallet includes a lower weighing platform fixedly connected to the bottom of the inner side of the platform box, a material distribution plate fixedly connected to the top of the lower weighing platform, a material pushing electric cylinder installed at the bottom of the inner side of the platform box, a material pushing plate fixedly connected to the telescopic end of the material pushing electric cylinder, and a material pushing shovel rotatably connected to the bottom of the material pushing plate.
[0024] Using the above technical solution, a distribution tray is set up to receive the sieved samples falling along the guide hopper, and the samples are weighed by the lower weighing platform. After weighing, the pusher cylinder can be extended to push the pusher plate and the pusher shovel to scoop the sample out of the third tray. Under normal circumstances, the pusher shovel can rotate along the pusher plate, so it will naturally hang on the inside of the distribution tray, avoiding the gap between the pusher plate and the lower weighing platform that would prevent the sample from being completely scooped out.
[0025] The present invention is further configured such that: a fine material outlet is fixedly connected to the bottom of the platform, a coarse material outlet is fixedly connected to the left side of the platform, and a transparent door panel is rotatably connected to the front side of the platform.
[0026] By adopting the above technical solution, a fine material outlet is set as the outlet for the sample pushed out by the pusher shovel, while a coarse material outlet is set as the outlet for the sample retained in the second tray when it is poured out, so as to facilitate separate collection.
[0027] (III) Beneficial Effects
[0028] Compared with the prior art, the present invention provides an online detection platform for measuring coal particle size, which has the following advantages: This online testing device for coal particle size measurement uses a first tray for placing coal powder samples. After placement, the sample remains inside the tray, allowing for heating and drying of the coal powder within the tray. The total weight of the sample is then measured using a net weight weighing platform. Integrating the heating function with the weighing platform enables in-situ removal of moisture from the coal powder and accurate measurement of the total dry coal weight, fundamentally avoiding the influence of the external environment on measurement accuracy. After initial weighing, the device is lifted by an opening and closing electric cylinder, at which point a flow of energy is generated between the hollow plug and the tray. The gap size can be adjusted to regulate the sample's falling speed. When the sample falls to the second tray, it will land in the sieve tray directly below. As the sieve tray vibrates, the sample on the screen will be sieved. Particles that pass through the screen will fall into the third tray. At this point, the samples remaining in the second and third trays can be weighed separately using the upper and lower weighing platforms to accurately obtain the specific gravity of the qualified fine powder. The screen in the sieve tray can also be replaced as needed to adjust the mesh size to suit different qualification standards. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the main body in this invention; Figure 3 This is a front view of the main structure in this invention; Figure 4 This is a schematic diagram of the connection of the net weight weighing platform in this invention; Figure 5 This is a schematic diagram of the connection of the first tray in this invention; Figure 6 This is a schematic diagram of the structure of the paddle in this invention; Figure 7 This is a schematic diagram of the structure of the second tray in this invention; Figure 8 This is a schematic diagram of the structure of the third tray in this invention; Figure 9 This is a bottom view of the main structure in this invention.
[0030] In the diagram: 1. First pallet; 101. Feeding tray; 102. Connecting ring; 103. Support frame; 104. Hollow plug; 105. Branch pipe; 106. Opening / closing electric cylinder; 2. Second pallet; 201. Upper weighing platform; 202. Screen tray; 203. Mesh plate; 204. Sliding sleeve; 3. Third pallet; 301. Lower weighing platform; 302. Distributing tray; 303. Pushing electric cylinder; 304. Pushing plate; 305. Pushing shovel; 4. Platform box; 5. Hollow frame; 6. Sliding frame; 7. Barrier net ; 8. Fan unit; 9. Hose; 10. Driven ring; 11. Gear ring; 12. Sub-frame; 13. Gear motor; 14. Gear; 15. Paddle; 16. Limit sleeve; 17. Heating wire; 18. Net weight weighing platform; 19. Slide rod; 20. Side plate; 21. Servo motor; 22. Turntable; 23. Crank; 24. Turning frame; 25. Side frame; 26. Tilting cylinder; 27. Transmission frame; 28. Return spring; 29. Guide bucket; 30. Fine material outlet; 31. Coarse material outlet. Detailed Implementation
[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0032] Example 1
[0033] Please see Figure 1-7 An online detection platform for measuring coal particle size includes a platform 4, a first tray 1 fixedly connected to the top of the inner side of the platform 4, a second tray 2 provided in the middle of the inner side of the platform 4, and a third tray 3 fixedly connected to the bottom of the inner side of the platform 4. The first tray 1 includes a dispensing tray 101. A connecting ring 102 is fixedly connected to the top of the dispensing tray 101. A support frame 103 is provided on the outside of the connecting ring 102. A hollow plug 104 is inserted into the bottom of the inner side of the dispensing tray 101. An integrally formed branch pipe 105 is provided on the outside of the hollow plug 104. An opening and closing electric cylinder 106 is provided on the top of the inner side of the platform box 4. The opening and closing electric cylinder 106 is located inside the hollow plug 104. The telescopic end of the opening and closing electric cylinder 106 is fixedly connected to the top of the inner side of the hollow plug 104. A net weight weighing platform 18 is fixedly connected to the top of the inner side of the platform box 4, and the top of the net weight weighing platform 18 is fixedly connected to the support frame 103. The second pallet 2 includes an upper weighing platform 201, a sieve plate 202 is fixedly connected to the top of the upper weighing platform 201, a mesh plate 203 is installed on the inner side of the sieve plate 202, and a sliding sleeve 204 is fixedly connected to the front and rear sides of the upper weighing platform 201. By setting up a first tray 1 for placing the coal powder sample to be tested, the sample will remain inside the placement tray 101 after placement. At this time, the coal powder can be heated and dried inside the placement tray 101, and the total weight of the sample can be weighed through the net weight weighing platform 18. The heating function is integrated with the weighing platform, realizing in-situ removal of moisture from the coal powder and accurate measurement of the total weight of the dry coal, fundamentally avoiding the influence of the external environment on the measurement accuracy. After the initial weighing is completed, the tray is lifted by opening and closing the electric cylinder 106. At this time, a gap is created between the hollow plug 104 and the placement tray 101. Adjusting the gap size can also adjust the... The effect of the sample falling speed is that when the sample falls to the second tray 2, it will fall into the sieve tray 202 located directly below. As the sieve tray 202 vibrates, the sample on the screen plate 203 will be sieved by the screen plate 203. Among them, the particles that pass through the screen plate 203 will fall into the third tray 3. At this time, the samples retained in the second tray 2 and the third tray 3 can be weighed separately by the upper weighing platform 201 and the lower weighing platform 301 to accurately obtain the specific gravity of qualified fine powder. The screen plate 203 in the sieve tray 202 can be replaced as needed to adjust the mesh size to adapt to different qualified standards.
[0034] The top of the inner side of the platform 4 is fixedly connected to a perforated frame 5. The top of the perforated frame 5 is fixedly connected to the bottom of the opening and closing electric cylinder 106. The inner side of the hollow plug 104 is fixedly connected to a slide 6. The inner side of the slide 6 is slidably connected to the opening and closing electric cylinder 106. The perforated frame 5 is used to support the bottom of the opening and closing electric cylinder 106 without causing excessive impact on the falling sample. The slide 6 is used to assist in connecting the opening and closing electric cylinder 106 and the hollow plug 104. When the hollow plug 104 is pushed and pulled vertically, it can slide along the opening and closing electric cylinder 106 and block the airflow to prevent the airflow from flowing through the gap between the opening and closing electric cylinder 106 and the hollow plug 104. An airflow hole is opened at the top of the hollow plug 104. The outer side of the branch pipe 105 Several vents are provided, and a screen 7 is fixedly connected to the inner side of each vent. A fan device 8 is fixedly connected to the rear side of the platform 4, and a flexible hose 9 is fixedly connected to the air outlet of the fan device 8. The side of the flexible hose 9 near the hollow plug 104 is bolted to the top of the hollow plug 104. By setting up the fan device 8, a small amount of airflow can be continuously blown into the hollow plug 104 through the flexible hose 9 during normal operation, and the airflow is discharged through the branch pipe 105 and the vents. This allows the airflow to agitate the sample and help remove moisture. At the same time, the continuously agitated sample is less likely to clump due to internal moisture sticking together and drying. A driven ring 10 is provided on the top of the inner side of the loading tray 101, and a toothed ring 11 is fixedly connected to the outer side of the driven ring 10. A sub-frame 1 is fixedly connected to the outer side of the support frame 103. 2. A reduction motor 13 is fixedly connected to the inner side of the sub-frame 12. A gear 14 is fixedly connected to the output end of the reduction motor 13. The gear 14 meshes with the gear ring 11. A paddle 15 is fixedly connected to the bottom of the driven ring 10. The driven ring 10 can rotate inside the delivery tray 101. The reduction motor 13 controls the rotation of the gear ring 11 and the driven ring 10 through the gear 14. While rotating, the arc-shaped paddle 15 continuously agitates the sample in the delivery tray 101 to prevent it from clumping and to make the airflow more uniform, thereby optimizing the drying effect. A limiting sleeve 16 is fixedly connected to the top of the support frame 103. A roller is rotatably connected to the inner side of the limiting sleeve 16. The inner side of the limiting sleeve 16 slides with the outer side of the top of the driven ring 10 through the roller. Next, a heating wire 17 is installed on the inner side of the paddle 15. A limiting sleeve 16 is provided to support and connect the driven ring 10, allowing the driven ring 10 to rotate circumferentially along the inner side of the limiting sleeve 16 when driven by the reduction motor 13, gear 14, and gear ring 11. The heating wire 17 located inside the paddle 15 can continuously heat and dry the sample while the paddle 15 is agitating it, thereby assisting the airflow to further improve drying efficiency and reduce the impact of humidity on detection accuracy. A sliding rod 19 is slidably connected to the inner side of the sliding sleeve 204. A side plate 20 is fixedly connected to the right side of the sliding rod 19, and a servo motor 21 is fixedly connected to the left side of the side plate 20. A turntable 22 is fixedly connected to the output end of the servo motor 21, and a crank 23 is rotatably connected to the front side of the turntable 22.The left side of crank 23 is rotatably connected to the upper weighing platform 201. A servo motor 21 is provided to drive the turntable 22 to rotate. The crank 23 connected to it will reciprocate to push and pull the upper weighing platform 201, thereby causing vibration to sieve the sample stored in the sieve tray 202. When the upper weighing platform 201 is displaced, it will be limited by the sliding sleeve 204 moving along the slide rod 19. At the same time, the side plate 20 is connected to the two slide rods 19 to provide mounting support for the servo motor 21. A rotating frame 24 is fixedly connected to the left side of the slide rod 19. A side frame 25 is rotatably connected to the left side of the rotating frame 24. The left side of the side frame 25 is fixedly connected to the platform 4. A tilting electric cylinder 26 is rotatably connected to the left side of the inner side of the platform 4. A transmission frame 27 is fixedly connected to the bottom of the left sliding sleeve 204. The output end of the tilting electric cylinder 26 is rotatably connected to the transmission frame 27. By setting the rotating frame 24 in conjunction with the side frame 25, the slide rod 19 is connected to the inner side of the platform 4, and the slide rod 19 and the second tray 2 are connected. The upper weighing platform 201 can rotate along the inner side of the platform 4. The telescopic end of the tilting cylinder 26 is normally in an extended state, and the second tray 2 is fixed horizontally by the transmission frame 27. After weighing, the telescopic end of the tilting cylinder 26 can retract, causing it to drag the transmission frame 27 and the connected rotating frame 24 along the side frame 25, tilting the upper weighing platform 201 to pour out the sample from the sieve tray 202. A return spring 28 is fixedly connected between the rotating frame 24 and the upper weighing platform 201, sleeved on the outside of the slide rod 19. A guide bucket 29 is fixedly connected to the bottom of the upper weighing platform 201. By setting the return spring 28, when the upper weighing platform 201 moves along the slide rod 19 via the sliding sleeve 204, the return spring 28 performs compression and reset actions to assist the movement of the upper weighing platform 201. The guide bucket 29 is used to guide the sample sieved through the screen 203, causing it to fall into the third tray 3 after being guided.
[0035] The working principle of this embodiment is as follows: After the coal powder to be tested is put into the feeding tray 101 of the first tray 1, the bottom is sealed by the hollow plug 104 to retain the sample. Then, the heating wire 17 inside the tweezer 15 heats the sample and the blower device 8 blows in airflow. At the same time, the geared motor 13 drives the gear 14 and the gear ring 11 to drive the driven ring 10 and the tweezer 15 to rotate and stir the sample, achieving in-situ efficient drying and avoiding agglomeration. After drying, the net weight weighing platform 18 accurately measures the total weight of the sample. After completion, the opening and closing electric cylinder 106 lifts the hollow plug 104. The gap size can be adjusted to control the falling speed. The sample falls into the sieve tray 202 of the second tray 2. The hollow frame 5 supports the opening and closing electric cylinder 106, and the slide 6 assists the hollow plug 104 to slide and prevents airflow leakage. Then, the servo motor 21 drives the turntable 22 and the crank 23 to drive the upper weighing platform 201 to vibrate along the slide rod 19 through the sliding sleeve 204. The inner mesh plate 2 of the sieve tray 202 03. The sample is sieved. Fine powder falls into the third tray 3 through the guide hopper 29. The reset spring 28 assists the upper weighing platform 201 in vibrating and resetting. The upper weighing platform 201 weighs the weight of the retained coarse material simultaneously. After sieving and weighing, the tilting cylinder 26 retracts and pulls the rotating frame 24 along the side frame 25 through the transmission frame 27, causing the upper weighing platform 201 to tilt and discharge the coarse material through the coarse material outlet 31. The fine powder that falls into the distribution tray 302 of the third tray 3 is weighed by the lower weighing platform 301. After completion, the pushing cylinder 303 pushes the pushing shovel 305 to discharge the fine powder through the fine material outlet 30. The sample flows in a closed loop within the platform box 4 throughout the process. Each cylinder, motor and weighing platform are linked and controlled. The inner mesh plate 203 of the sieve tray 202 can be replaced to adapt to different testing standards. Finally, the particle size distribution ratio is accurately calculated by the total weight, coarse material weight and fine material weight. External interference is avoided throughout the process to ensure measurement accuracy and efficiency.
[0036] Example 2
[0037] refer to Figure 3-9 An online testing device for measuring coal particle size also includes a third tray 3, wherein the third tray 3 includes a lower weighing platform 301 fixedly connected to the bottom of the inner side of the platform box 4, a material distribution plate 302 fixedly connected to the top of the lower weighing platform 301, a pushing electric cylinder 303 installed at the bottom of the inner side of the platform box 4, a pushing blade 304 fixedly connected to the telescopic end of the pushing electric cylinder 303, and a pushing shovel 305 rotatably connected to the bottom of the pushing blade 304; The sample distribution plate 302 is used to receive the sieved sample falling along the guide hopper 29 and weigh it through the lower weighing platform 301. After weighing, the sample can be scooped out of the third tray 3 by extending the pusher cylinder 303 to push the pusher plate 304 and the pusher shovel 305. Under normal circumstances, the pusher shovel 305 can rotate along the pusher plate 304, so it will naturally hang on the inner side of the distribution plate 302, avoiding the gap between the pusher plate 304 and the lower weighing platform 301 that prevents the sample from being completely scooped out.
[0038] The bottom of the platform 4 is fixedly connected to a fine material outlet 30, the left side of the platform 4 is fixedly connected to a coarse material outlet 31, and the front of the platform 4 is rotatably connected to a transparent door panel. The fine material outlet 30 serves as the outlet for the sample pushed out by the pusher shovel 305, while the coarse material outlet 31 serves as the outlet for the sample retained in the second tray 2 when it is poured, so as to facilitate separate collection.
[0039] The working principle of this embodiment is as follows: The distribution tray 302 of the third tray 3 is used to receive the undersized fine material falling from the guide bucket 29 of the second tray 2. The lower weighing platform 301 simultaneously measures the weight of the fine material in the distribution tray 302. After weighing, the pusher cylinder 303 extends to push the pusher plate 304 and the pusher shovel 305 rotatably connected to the bottom to move. Since the pusher shovel 305 can rotate along the pusher plate 304 and naturally hangs on the inside of the distribution tray 302 in normal state, it can scoop out the fine material without gaps and push it out through the fine material outlet 30 at the bottom of the platform box 4. The coarse material outlet 31 on the left side of the platform box 4 is used to discharge the coarse material poured out by the second tray 2, so as to realize the separate collection of coarse and fine materials. The transparent door panel on the front of the platform box 4 makes it easy to observe the internal working status.
[0040] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. Those skilled in the art can make modifications to this embodiment without contributing any inventive step after reading this specification. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An online detection platform for measuring coal particle size, comprising a platform housing (4), characterized in that: The top of the inner side of the platform (4) is fixedly connected to a first tray (1), the middle of the inner side of the platform (4) is provided with a second tray (2), and the bottom of the inner side of the platform (4) is fixedly connected to a third tray (3). The first tray (1) includes a dispensing tray (101), a connecting ring (102) is fixedly connected to the top of the dispensing tray (101), a support frame (103) is provided on the outside of the connecting ring (102), a hollow plug (104) is inserted into the bottom of the inner side of the dispensing tray (101), an integrally formed branch pipe (105) is provided on the outside of the hollow plug (104), and an opening and closing electric cylinder (106) is provided on the top of the inner side of the platform (4). The opening and closing electric cylinder (106) is located inside the hollow plug (104), and the telescopic end of the opening and closing electric cylinder (106) is fixedly connected to the top of the inner side of the hollow plug (104). The top of the inner side of the platform (4) is fixedly connected to a net weight weighing platform (18), and the top of the net weight weighing platform (18) is fixedly connected to the support frame (103). The second pallet (2) includes an upper weighing platform (201), a sieve plate (202) is fixedly connected to the top of the upper weighing platform (201), a mesh plate (203) is installed on the inner side of the sieve plate (202), and a sliding sleeve (204) is fixedly connected to the front and rear sides of the upper weighing platform (201).
2. The online detection device for measuring coal particle size according to claim 1, characterized in that: A hollow frame (5) is fixedly connected to the top of the inner side of the platform (4). The top of the hollow frame (5) is fixedly connected to the bottom of the opening and closing electric cylinder (106). A slide (6) is fixedly connected to the inner side of the hollow plug (104). The inner side of the slide (6) is slidably connected to the opening and closing electric cylinder (106).
3. The online detection device for measuring coal particle size according to claim 1, characterized in that: The top of the hollow plug (104) is provided with an airflow hole, and the outer side of the branch pipe (105) is provided with several exhaust holes. A net (7) is fixedly connected to the inner side of the exhaust hole. A fan device (8) is fixedly connected to the rear side of the platform (4). A hose (9) is fixedly connected to the air outlet end of the fan device (8). The hose (9) is bolted to the top of the hollow plug (104) on the side near the hollow plug (104).
4. The online detection device for measuring coal particle size according to claim 1, characterized in that: The top of the inner side of the delivery plate (101) is provided with a driven ring (10), and a toothed ring (11) is fixedly connected to the outer side of the driven ring (10). A sub-frame (12) is fixedly connected to the outer side of the support frame (103). A reduction motor (13) is fixedly connected to the inner side of the sub-frame (12). A gear (14) is fixedly connected to the output end of the reduction motor (13). The gear (14) and the toothed ring (11) are meshed. A paddle (15) is fixedly connected to the bottom of the driven ring (10).
5. The online detection device for measuring coal particle size according to claim 4, characterized in that: The top of the support frame (103) is fixedly connected to a limiting sleeve (16), and a roller is rotatably connected to the inner side of the limiting sleeve (16). The inner side of the limiting sleeve (16) is slidably connected to the outer side of the top of the driven ring (10) through the roller. A heating wire (17) is installed on the inner side of the paddle (15).
6. The online detection device for measuring coal particle size according to claim 1, characterized in that: The inner side of the sliding sleeve (204) is slidably connected to a slide rod (19), the right side of the slide rod (19) is fixedly connected to a side plate (20), the left side of the side plate (20) is fixedly connected to a servo motor (21), the output end of the servo motor (21) is fixedly connected to a turntable (22), the front side of the turntable (22) is rotatably connected to a crank (23), and the left side of the crank (23) is rotatably connected to the upper weighing platform (201).
7. The online detection device for measuring coal particle size according to claim 6, characterized in that: A rotating frame (24) is fixedly connected to the left side of the sliding rod (19). A side frame (25) is rotatably connected to the left side of the rotating frame (24). The left side of the side frame (25) is fixedly connected to the platform (4). A tilting electric cylinder (26) is rotatably connected to the left side of the inner side of the platform (4). A transmission frame (27) is fixedly connected to the bottom of the left sliding sleeve (204). The output end of the tilting electric cylinder (26) is rotatably connected to the transmission frame (27).
8. The online detection device for measuring coal particle size according to claim 7, characterized in that: A return spring (28) is fixedly connected between the rotating frame (24) and the upper weighing platform (201). The return spring (28) is sleeved on the outside of the slide rod (19). A guide bucket (29) is fixedly connected to the bottom of the upper weighing platform (201).
9. The online detection device for measuring coal particle size according to claim 1, characterized in that: The third pallet (3) includes a lower weighing platform (301) fixedly connected to the bottom of the inner side of the platform box (4). A material distribution plate (302) is fixedly connected to the top of the lower weighing platform (301). A pusher cylinder (303) is installed at the bottom of the inner side of the platform box (4). A pusher plate (304) is fixedly connected to the telescopic end of the pusher cylinder (303). A pusher shovel (305) is rotatably connected to the bottom of the pusher plate (304).
10. The online detection device for measuring coal particle size according to claim 1, characterized in that: The bottom of the platform (4) is fixedly connected to a fine material outlet (30), the left side of the platform (4) is fixedly connected to a coarse material outlet (31), and the front side of the platform (4) is rotatably connected to a transparent door panel.