An intelligent coal collecting and processing integrated device for a thermal power plant

Abstract

The application discloses a kind of intelligent sampling and preparation integrated device equipment of coal into power plant, comprising: weighing equipment, selection sampling mechanism, work platform, controller, sample preparation mechanism and inductive indicating system;Selection sampling mechanism is arranged at the outside of the weighing equipment;Work platform is arranged at the outside right rear of the weighing equipment;Sample preparation mechanism is arranged at the inside of the work platform;Inductive indicating system is arranged at the outside left front of the weighing equipment.The intelligent sampling and preparation integrated device equipment of coal into power plant realizes the automatic operation of the whole process of coal into power plant sampling and preparation, from coal sample collection, processing to the core link of packaging without manual intervention, improves efficiency while eliminating the risk caused by human intervention, and adjusts the position and depth of coal sample collection according to needs, improves the representativeness of coal sample and the accuracy of detection data, while ensuring the impartiality and credibility of coal quality detection results.

Description

Technical Field

[0001] This invention relates to the field of thermal power plant technology, specifically to an integrated intelligent coal sampling and processing device for thermal power plants. Background Technology

[0002] Thermal power plants are core energy production facilities that convert chemical energy into electrical energy by burning fossil fuels. Their core operating logic is to use the high-temperature flue gas generated by fuel combustion to heat water in the boiler, turning it into high-temperature, high-pressure steam. The steam drives the turbine to rotate at high speed, which in turn drives the generator to cut magnetic field lines and generate electricity. Coal supplied to the plant is the core fuel for power generation in thermal power plants. Its quality directly determines the power plant's power generation efficiency, operating costs, and environmental emission levels. Thermal power plants have strict requirements for the quality indicators of coal supplied to the plant, focusing on key parameters such as calorific value, sulfur content, ash content, and moisture content. As the production material with the highest cost in thermal power plants, the procurement and management of coal supplied to the plant is of paramount importance in the operation of the plant. The impartiality and accuracy of its procurement and preparation are directly related to the coal quality test results, which in turn affect the trade settlement between the power plant and the coal supplier. At the same time, a high-quality and stable supply of coal supplied to the plant can reduce boiler failures, reduce equipment wear and tear, and ensure the long-term safe and stable operation of thermal power plant units. Therefore, the quality control of coal supplied to the plant is a core link in the production management system of thermal power plants. In existing coal sampling and processing technologies for thermal power plants, the sampling techniques used rely on the operator's experience to judge the sampling location and depth. This is easily affected by human factors, resulting in selective sampling. Consequently, the coal sample cannot accurately reflect the overall coal quality of the vehicle. Furthermore, manual sampling can only target the surface layer of coal above the vehicle, with limited sampling depth. This makes it easy for human intervention to adulterate or replace coal samples, which seriously affects the impartiality of the test results. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated intelligent coal sampling and processing device for thermal power plants, so as to at least solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated intelligent coal sampling and processing device for thermal power plants, comprising: Weighing equipment; Select a sampling mechanism and install it outside the weighing equipment; The working platform is located on the outside of the weighing equipment at the right rear. The controller is installed at the top right rear of the working platform, and the weighing device is electrically connected to the controller; The sample preparation mechanism is located inside the working platform; A sensing indicator system is located on the outer left front of the weighing device, and the sensing indicator system is electrically connected to the controller.

[0005] Preferably, the sampling mechanism includes: a gantry and a dual-ended three-axis moving platform. The gantry is arranged outside the weighing equipment in the front-to-back direction; the dual-ended three-axis moving platform is fixedly installed on the top of the outer surface of the gantry, and the dual-ended three-axis moving platform is electrically connected to the controller; wherein, a pre-drilled hole component is provided on one side of the moving end of the dual-ended three-axis moving platform, a sampling component is provided below the other side of the moving end of the dual-ended three-axis moving platform, and a lifting component is provided above the sampling component.

[0006] Preferably, the pre-drilled component includes: a vertical frame, an electric telescopic rod, a vertical mounting bracket, a first motor, and a deep hole drill bit; the vertical frame is fixedly installed in the vertical direction on the front side of the moving end of the double-ended three-axis moving platform; the electric telescopic rod is fixedly installed in the vertical direction on the inner side of the vertical frame, and the electric telescopic rod is electrically connected to the controller; the vertical mounting bracket is fixedly installed in the vertical direction on the top outer side of the telescopic end of the electric telescopic rod; the first motor is installed on the bottom front side of the outer surface of the vertical mounting bracket, and the first motor is electrically connected to the controller; the deep hole drill bit is installed in the vertical direction on the bottom of the rotating end of the first motor.

[0007] Preferably, the sampling component includes: a housing, a second motor, a third motor, a gear assembly, a reel, a flexible suction tube, an annular plate, a spring, a flexible connecting cylinder, a connecting rope, and a connector valve; the housing is located below the moving end of the double-ended three-axis moving platform; there are two second motors, which are respectively installed on the bottom left and right sides of the outer surface of the housing, with the rotating ends of the second motors extending into the inner cavity of the housing, and the second motors are electrically connected to the controller; there are two third motors, which are respectively installed on the top left and right sides of the outer surface of the housing, with the rotating ends of the third motors extending into the inner cavity of the housing, and the third motors are electrically connected to the controller; there are two gear assemblies, with one gear on one side of each gear assembly installed inside the rotating ends of the left and right third motors; there are two sets of reels, with one set of reels installed inside the rotating ends of the left and right housings, and the other set of reels rotatably installed at the front and rear ends of the top left and right sides of the inner cavity of the housing via rotating shafts, with the shaft center aligned with the left and right gear assemblies. The other side of the component is connected by a gear key; the flexible suction tube is installed at the bottom of the outer surface of the housing in the vertical direction, and the top end of the flexible suction tube extends into the inner cavity of the housing; there are several annular plates, which are installed at intervals from top to bottom on the outer wall of the flexible suction tube; there are several groups of springs, with four springs in each group, which are fixedly installed at 90-degree intervals along the circumference at the four inner corners of two adjacent annular plates; there are several flexible connecting tubes, which are installed along the circumference on the outer side of two adjacent annular plates; there are four connecting ropes, one end of which is fixedly installed on the outer side of two sets of reels, and the other end of which passes through the inner side of several annular plates and is fixedly connected to the top end of the bottommost annular plate, with the four connecting ropes located inside the four springs in each group; the connector valve is installed at the bottom of the inner cavity of the housing, the inlet of which is connected to the top end of the flexible suction tube, and the outlet of which extends out of the outer rear side of the housing, and the connector valve is electrically connected to the controller.

[0008] Preferably, the sample preparation mechanism includes: a divider, a fixed frame, a first vacuum conveyor, a crusher, a second vacuum conveyor, a base frame, a diversion pipe, and a collection bag; the divider is fixedly installed along the vertical direction on the inner bottom of the working platform; the fixed frame is fixedly installed along the vertical direction on the top of the outer surface of the divider; the first vacuum conveyor is installed on the top of the outer surface of the fixed frame, the inlet of the first vacuum conveyor is connected to the outlet of the connector valve through a flexible connecting pipe, and the first vacuum conveyor and the controller are electrically connected; the crusher is installed on the inner bottom of the fixed frame, the top inlet of the crusher is connected to the bottom outlet of the first vacuum conveyor, and the... The outlet of the crusher is connected to the inlet of the separator, and the crusher and the controller are electrically connected. A second vacuum conveyor is located on the front side of the bottom of the separator, and the inlet of the second vacuum conveyor is connected to the waste port of the separator. The second vacuum conveyor and the controller are electrically connected. A base frame is located on the front side of the second vacuum conveyor. A diversion pipe is fixedly installed on the top of the outer surface of the base frame, and the inlet of the diversion pipe is connected to the outlet of the second vacuum conveyor through a pipeline. The diversion pipe and the controller are electrically connected. There are several collection bags, and each collection bag is detachably installed below the outlet of the diversion pipe.

[0009] Preferably, the sample preparation mechanism further includes: a feeding hopper, a mounting frame, baffles, a first micro electric telescopic rod, a tank shell, a first connecting seat, a tank rod, a limiting rod, a second micro electric telescopic rod, a connecting pin seat, a clamping module, and a second connecting seat; the feeding hopper is installed at the bottom of the separator, and the top inlet of the feeding hopper is connected to the bottom of the outlet of the separator; there are two mounting frames, which are respectively installed on the left and right sides of the outer surface of the feeding hopper; there are two baffles, which are respectively rotatably installed on the front and rear ends of the inner sides of the left and right mounting frames via a rotating shaft; the first micro electric telescopic rod... The device comprises two telescopic rods, each mounted on the outer front and rear top sides of the hopper via a rotating shaft. The telescopic ends of the two first micro-electric telescopic rods are rotatably connected to the outer sides of the front and rear baffles via rotating shafts. The first micro-electric telescopic rods are electrically connected to the controller. The device also comprises two trough shells, each mounted on the outer center of the left and right mounting brackets. The inner cavity of the first connecting seat has grooves communicating with the outside on both its upper and lower sides. Finally, the device comprises two first connecting seats, each mounted on one of the left or right trough shells. The top of the tank has two groove rods, one end of which is rotatably mounted on the inner outer end of the left and right first connecting seats via a rotating shaft. The groove rods pass through the upper and lower sides of the tank shell. There are also two limiting rods, one end of which is rotatably mounted on the inner inner end of the left and right first connecting seats via a rotating shaft. The limiting rods pass through the upper and lower sides of the tank shell. Two second miniature electric telescopic rods are installed on the outer inner cavity of the left and right tank shells, respectively. The second miniature electric telescopic rods are electrically connected to the controller. The system comprises: several connecting pin seats, which are installed inside the telescopic ends of the two second miniature electric telescopic rods on the left and right sides, and the two connecting pin seats are respectively inserted into the inner cavity of the two groove rods on the left and right sides; two clamping modules, which are respectively located below the outer shells of the two grooves on the left and right sides, and the clamping modules are electrically connected to the controller; and two second connecting seats, which are respectively installed at the top of the two clamping modules on the left and right sides, and the other ends of the two groove rods and the limiting rods are rotatably connected to the inner sides of the two second connecting seats on the left and right sides via rotating shafts.

[0010] Compared with the prior art, the beneficial effects of the present invention are: 1. A dual-end three-axis moving platform drives a vertical frame to move above the vehicle's cargo bed. A first motor drives a deep-hole drill bit to rotate, and an electric telescopic rod drives a vertical mounting frame to move the drill bit to a designated height. The drill bit then drills a hole to a designated depth into the coal inside the cargo bed at a designated location. The dual-end three-axis moving platform drives a lifting component on the other side to move above the cargo bed. The lifting component moves a sampling component below into the drilled hole. When bending in a designated direction is required, a second motor at the corresponding position drives the reel to rotate clockwise or counterclockwise, or a third motor at the corresponding position drives a gear in the gear assembly to rotate, causing the gear on the other side of the gear assembly to drive the reel at the corresponding position to rotate in the opposite direction, thus rotating the reel at the current position. Tension is generated by the winding of the connecting rope. The second motor on the other side drives the reel, or the third motor, in cooperation with the gear assembly, drives the reel to reverse and release the connecting rope to keep it slack. The connecting rope at the corresponding position drives the lowest annular plate to shift to the designated position. At other positions, under the constraint of the connecting rope and several sets of springs and annular plates, the lowest annular plate drives the end of the flexible suction pipe to bend in the designated direction to a preset angle. Then, the second and third motors stop and lock their positions. The connector valve opens to keep the flexible suction pipe connected to the first vacuum conveyor. Negative pressure is generated inside the first vacuum conveyor, causing coal outside the flexible suction pipe to enter the first vacuum conveyor along the flexible suction pipe, connector valve, and connecting pipeline.

[0011] 2. The coal is fed into the crusher via a first vacuum conveyor for crushing. The crushed coal then enters a separator for further reduction according to a specified ratio, retaining a small representative sample. The discarded sample is transported by a second vacuum conveyor through a corresponding pipeline to a diversion pipe. The diversion pipe guides the discarded sample into a collection bag at a designated location for collection. Under gravity, the sample enters the hopper. The second miniature electric telescopic rods on both sides drive the connecting pins to move inwards along the inner cavity of the trough. The drive mechanism rotates the corresponding groove rod inward around the axis of connection with the inner rotating shaft of the first connecting seat. The clamping modules on both sides move the opening end of the packaging bag held inside to the inward, opening the packaging bag opening inward by a certain gap. The first micro electric telescopic rods on both sides drive the corresponding baffle to flip outward, thereby moving the front and rear baffles to the front and rear ends of the inner side of the packaging bag opening and opening them outward to increase the opening area and stop obstructing the sample inside the hopper. The sample falls into the packaging bag below under the action of gravity.

[0012] This enables automated operation of the entire coal sampling and processing process at thermal power plants. The core steps, from coal sample collection and processing to packaging, do not require human intervention, improving efficiency while eliminating the risks associated with human intervention. Furthermore, the location and depth of coal sample collection can be adjusted as needed, enhancing the representativeness of the coal samples and the accuracy of the test data, while ensuring the impartiality and credibility of the coal quality test results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the sampling mechanism selection; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 for Figure 2 Enlarged view of point B; Figure 5 for Figure 2 Enlarged view of point C; Figure 6 for Figure 1 Exploded view of the sample preparation mechanism; Figure 7 for Figure 6 Enlarged view of point D.

[0014] In the diagram: 1. Weighing equipment; 2. Sampling selection mechanism; 21. Gantry frame; 22. Double-ended three-axis moving platform; 23. Vertical frame; 24. Electric telescopic rod; 25. Vertical mounting frame; 26. First motor; 27. Deep hole drill bit; 28. Housing; 29. ​​Second motor; 210. Third motor; 211. Gear assembly; 212. Reel; 213. Flexible suction pipe; 214. Annular plate; 215. Spring; 216. Flexible connecting cylinder; 217. Connecting rope; 218. Connecting valve; 219. Tank shell; 220. Fourth motor; 221. Limiting assembly; 222. Moving frame; 224. Gear teeth. 5. Components, 6. Working platform, 7. Controller, 8. Sample preparation mechanism, 9. Divider, 10. Fixing frame, 11. First vacuum conveyor, 12. Crusher, 13. Second vacuum conveyor, 14. Base frame, 15. Diversion pipe, 16. Collection bag, 17. Discharge hopper, 18. Mounting frame, 19. Baffle, 20. First miniature electric telescopic rod, 21. Tank shell, 22. First connecting seat, 33. Tank rod, 44. Limiting rod, 55. Second miniature electric telescopic rod, 56. Connecting pin seat, 57. Clamping module, 58. Second connecting seat, 59. Sensing indication system. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-7 This invention provides a technical solution: an integrated intelligent coal sampling and preparation device for thermal power plants, comprising: a weighing device 1, a sampling mechanism 2, a working platform 3, a controller 4, a sample preparation mechanism 5, and a sensing and indicating system 6. The weighing device 1 adopts a digital truck scale, adapted to the coal trucks commonly used in thermal power plants, and achieves real-time two-way communication with the controller 4. It can both upload weighing data to the internal database of the controller 4 and receive weighing start or stop commands from the controller 4, avoiding accidental data collection when the vehicle has not come to a complete stop. The sampling mechanism 2 is located outside the weighing device 1. The working platform 3 adopts a customized steel structure operating platform, with a personnel passage set at the front left of the platform, guardrails installed at the edges, and a wiring trough arranged under the platform to store the connecting cables of the equipment. The controller 4 is installed on the working platform. At the top right rear of the work platform 3, the weighing device 1 and controller 4 are electrically connected. The controller 4 is a PLC controller equipped with data processing and storage functions. It interfaces with the internal monitoring information system of the thermal power plant via an Ethernet interface to achieve real-time data upload and meet the data traceability requirements of coal quality supervision. The matching touch screen supports manual or automatic dual-mode switching. The sample preparation mechanism 5 is located inside the work platform 3. The sensing and indication system 6 is located on the outside left front of the weighing device 1. The sensing and indication system 6 is electrically connected to the controller 4. The sensing and indication system 6 adopts an industrial-grade vehicle guidance and sensing system, including an infrared positioning sensor, LED indicator and voice module. The infrared sensor detects the vehicle position in real time. When the vehicle stops completely in the weighing area, it sends a positioning completion signal to the controller to trigger subsequent actions.

[0017] As a preferred option, further, such as Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the sampling mechanism 2 includes a gantry frame 21 and a double-ended three-axis moving platform 22. The gantry frame 21 is positioned outside the weighing device 1 along the front-to-back direction. The double-ended three-axis moving platform 22 is fixedly installed on the top of the outer surface of the gantry frame 21. The double-ended three-axis moving platform 22 is electrically connected to the controller 4. The double-ended three-axis moving platform 22 is a double-ended independently controlled three-axis moving platform. The X-axis and Y-axis are driven by a rack and pinion. The X-axis covers the length of the truck bed, and the Y-axis covers the width of the truck bed. A pre-drilled component and a sampling component are respectively mounted at both ends, and controlled by two independent servo drive modules. The pre-drilled component is provided on one moving end of the double-ended three-axis moving platform 22. The system includes: a vertical frame 23, an electric telescopic rod 24, a vertical mounting bracket 25, a first motor 26, and a deep hole drill bit 27. The vertical frame 23 is fixedly installed vertically on the front of the moving end of the double-ended three-axis moving platform 22. The electric telescopic rod 24 is fixedly installed vertically on the inner side of the vertical frame 23. The electric telescopic rod 24 is electrically connected to the controller 4. The electric telescopic rod 24 is an electric push rod with a displacement sensor, equipped with an absolute displacement sensor, which can provide real-time feedback of the push rod position to the controller 4, receive extension and retraction commands from the controller 4, and link with the first motor 26 to ensure a smooth borehole wall without coal collapse. The vertical mounting bracket 25 is fixedly installed vertically on the extension end of the electric telescopic rod 24. The top outer side of the constricted end; the first motor 26 is installed on the bottom front side of the outer surface of the vertical mounting bracket 25. The first motor 26 is electrically connected to the controller 4. The first motor 26 is a variable frequency speed-regulating three-phase asynchronous motor, and the controller 4 achieves stepless speed regulation to avoid excessive crushing of the coal sample; the deep hole drill bit 27 is installed at the bottom of the rotating end of the first motor 26 in the vertical direction. The deep hole drill bit 27 is a coal-use spiral drill bit with a conical design at the top, which can crush coal and discharge the coal dust generated during drilling out of the hole, thus opening a sampling channel; a sampling component is set below the other moving end of the double-ended three-axis moving platform 22. The sampling component includes: a housing 28, a second motor 29, and a third motor 210. The components include a gear assembly 211, a reel 212, a flexible suction pipe 213, an annular plate 214, a spring 215, a flexible connecting cylinder 216, a connecting rope 217, and a connector valve 218. The housing 28 is located below the moving end of the double-ended three-axis moving platform 22. There are two second motors 29, which are respectively installed on the bottom left and right sides of the outer surface of the housing 28. The rotating end of the second motor 29 extends into the inner cavity of the housing 28. The second motor 29 is electrically connected to the controller 4. The second motor 29 is a stepper motor with an encoder, equipped with an incremental encoder, which feeds back the motor rotation angle to the controller 4 in real time to achieve precise winding and unwinding of the connecting rope 217 by the reel 212.There are two third motors 210. The two third motors 210 are respectively installed on the top left and right sides of the outer surface of the housing 28. The rotating end of the third motor 210 extends into the inner cavity of the housing 28. The third motor 210 is electrically connected to the controller 4. The third motor 210 is a stepper motor with an encoder. It is equipped with an incremental encoder and feeds back the motor rotation angle to the controller 4 in real time to realize the precise winding and unwinding of the connecting rope 217 by the reel 212. The second motor 29 controls the lower left and right reels 212, and the third motor 210 controls the top left and right reels 212 through the gear assembly 211. The two work together to realize the four-way bending of the flexible suction tube 213 in all directions. There are two gear assemblies 211. One gear of each gear assembly 211 is installed inside the rotating ends of the left and right third motors 210, respectively. The gear assemblies 211 transmit power from the third motors 210 to the corresponding reels 212. There are two sets of reels 212. One set of reels 212 is installed inside the rotating ends of the left and right outer shells 28, respectively. The other set of reels 212 is rotatably installed at the front and rear ends of the top left and right sides of the inner cavity of the outer shell 28 via a rotating shaft, with the shaft connected to the gear key on the other side of the left and right gear assemblies 211. A flexible suction pipe 213 is installed vertically on the outer shell 211. At the bottom of the outer surface of the outer shell 28, the top of the flexible suction tube 213 extends into the inner cavity of the outer shell 28. The flexible suction tube 213 is a PU steel wire reinforced hose with a stainless steel wire spiral skeleton embedded in the tube wall. It can be bent at any angle from 0-180°, and the inner cavity remains unobstructed after bending. The inner wall of the tube is smooth to avoid coal sample adhesion and residue. After sampling, it can be cleaned by reverse blowing with compressed air. There are several annular plates 214, which are installed at intervals from top to bottom on the outer wall of the flexible suction tube 213. The annular plates 214 are made of nylon and are used to fix the connecting rope 217 and the spring 215 to transmit tension and adjust the posture. There are several springs 215. The dry assembly consists of four springs 215 per group. Several groups of springs 215 are fixedly installed at ninety-degree intervals along the circumference at the four inner corners of two adjacent annular plates 214. The springs 215 generate a restoring force when the flexible suction tube 213 bends, and maintain force balance when the posture is locked, preventing the flexible suction tube 213 from sagging due to its own weight. The dry assembly consists of several flexible connecting tubes 216. Several flexible connecting tubes 216 are installed along the circumference on the outer side of two adjacent annular plates 214. The flexible connecting tubes 216 are made of canvas and form a dustproof protective sleeve with the adjacent annular plates 214 to prevent coal dust from entering the area of ​​the springs 215 and connecting ropes 217 and affecting the flexibility of movement.There are four connecting ropes 217. One end of each connecting rope 217 is fixedly installed on the outside of the two sets of reels 212. The other end of each connecting rope 217 passes through the inside of several annular plates 214 and is fixedly connected to the top of the bottom annular plate 214. The four connecting ropes 217 are located inside each set of four springs 215. The connecting ropes 217 are made of stainless steel wire rope with a polytetrafluoroethylene coating to reduce frictional resistance with the holes of the annular plates 214. Both ends of the connecting ropes 217 are fixed to the reels 212 and the bottom annular plate 214 respectively through crimp terminals to prevent loosening. Connector valve 218 is installed at the bottom of the inner cavity of housing 28. The inlet of connector valve 218 is connected to the top of flexible suction pipe 213, and the outlet of connector valve 218 extends out of the rear side of housing 28. Connector valve 218 is electrically connected to controller 4. Connector valve 218 receives instructions from controller 4. When it is opened, it connects the flexible suction pipe 213 to the first vacuum conveyor 53. After sampling, it is closed to prevent residual coal sample in the pipe from falling and polluting the environment. A lifting component is provided above the sampling component. The lifting component includes: tank shell 219, fourth motor 220, limit component 221, and moving frame 22. 2 and gear rack assembly 223; the tank shell 219 is fixedly installed below the moving end of the double-ended three-axis moving platform 22 in the front-rear direction; the fourth motor 220 is installed on the outer rear side of the tank shell 219, the rotating end of the fourth motor 220 extends into the inner side of the tank shell 219, the fourth motor 220 is electrically connected to the controller 4, the fourth motor 220 is a servo motor and equipped with an electromagnetic brake device, when the fourth motor 220 stops, the output shaft is immediately locked to prevent the moving frame 222 from falling due to its own weight; there are two limit components 221, and the two limit components 221 are respectively installed on the tank shell On the inner left and right sides of 219, the limiting components 221 are linear guide rails. The slider is bolted to the inner wall of the tank shell 219, and the guide rail is bolted to the outer wall of the movable frame 222. The movable frame 222 is set inside the limiting ends of the left and right limiting components 221 in the vertical direction, and the bottom end of the movable frame 222 is fixedly connected to the top of the outer shell 28. The rack of the gear and rack assembly 223 is installed on the rear side of the movable frame 222 in the vertical direction. The gear of the gear and rack assembly 223 is connected to the rotating end of the fourth motor 220 to ensure that the power of the fourth motor 220 is transmitted to the movable frame 222 to realize the lifting action.

[0018] As a preferred option, further, such as Figure 6 and Figure 7As shown, the sample preparation mechanism 5 includes: a divider 51, a fixed frame 52, a first vacuum conveyor 53, a crusher 54, a second vacuum conveyor 55, a base frame 56, a diversion pipe 57, a collection bag 58, a hopper 59, a mounting frame 510, a baffle 511, a first miniature electric telescopic rod 512, a tank shell 513, a first connecting seat 514, a tank rod 515, a limiting rod 516, a second miniature electric telescopic rod 517, a connecting pin seat 518, a clamping module 519, and a second connecting seat 520. The divider 51 is fixedly installed on the inner bottom of the working platform 3 in the vertical direction. The divider 51 is an adjustable divider, and the reduction ratio can be manually switched to meet different testing requirements. The bottom is equipped with a sample retention outlet and a sample discard outlet, which are respectively connected to the hopper. 59 and the second vacuum conveyor 55 are equipped with elastic sealing sheets at their outlets to prevent dust leakage; the fixed frame 52 is fixedly installed on the top of the outer surface of the separator 51 along the vertical direction; the first vacuum conveyor 53 is installed on the top of the outer surface of the fixed frame 52, and the inlet of the first vacuum conveyor 53 is connected to the outlet of the connector valve 218 through a flexible connecting pipe. The first vacuum conveyor 53 is electrically connected to the controller 4. The first vacuum conveyor 53 is a negative pressure vacuum conveyor and operates synchronously with the connector valve 218 of the sampling mechanism; the crusher 54 is installed on the inner bottom of the fixed frame 52, the top inlet of the crusher 54 is connected to the bottom outlet of the first vacuum conveyor 53, and the outlet of the crusher 54 is connected to the inlet of the separator 51. The crusher 54 is connected to the controller 4. 4. Electrical connection: The crusher 54 is a toothed roller crusher, and the discharge particle size can be adjusted by the controller 4. It uses double toothed roller crushing with a combination of sharp and flat teeth to avoid over-crushing of the coal sample. The second vacuum conveyor 55 is located on the front side of the bottom of the separator 51. The inlet of the second vacuum conveyor 55 is connected to the waste port of the separator 51. The second vacuum conveyor 55 and the controller 4 are electrically connected. The second vacuum conveyor 55 is a high-flow vacuum conveyor. The conveying pipe is made of wear-resistant metal material with strong impact resistance, suitable for conveying large pieces of waste sample. It opens synchronously with the waste sample outlet valve of the separator 51. When a collection bag 58 in the diversion pipe 57 is full, the controller 4 switches the conveyor outlet path. The base frame 56 is located outside the second vacuum conveyor 55. Front side; the diversion pipe 57 is fixedly installed on the top of the outer surface of the base frame 56. The inlet of the diversion pipe 57 is connected to the outlet of the second vacuum conveyor 55 through a pipeline. The diversion pipe 57 is electrically connected to the controller 4. The diversion pipe 57 is an electric multi-port diversion pipe with multiple outlets. The passage is switched by an electric butterfly valve. Each outlet is equipped with a weight sensor that works with the collection bag 58. When the amount of a collection bag 58 reaches the threshold, the sensor sends a signal, and the diversion pipe 57 drives the electric butterfly valve to switch to the empty bag passage. There are several collection bags 58. Several collection bags 58 are detachably installed below the outlet of the diversion pipe 57. The collection bags 58 are wear-resistant container bags, and the bag opening is equipped with a quick-release buckle that matches the outlet of the diversion pipe 57.The feeding hopper 59 is installed at the bottom of the separator 51, and the top inlet of the feeding hopper 59 is connected to the bottom of the outlet of the separator 51. Two mounting brackets 510 are installed on the left and right sides of the outer surface of the feeding hopper 59, respectively. Two baffles 511 are installed on the inner front and rear ends of the left and right mounting brackets 510 via rotating shafts. Initially, the baffles 511 are closed, blocking the outlet of the feeding hopper 59 to temporarily store samples. When receiving samples, they flip outwards under the drive of the first micro-electric telescopic rod 512, both releasing the sample obstruction and inserting into the packaging bag to open the front and rear bag openings, expanding the sample receiving area. Two first micro-electric telescopic rods 512 are also present. Two miniature electric telescopic rods 512 are rotatably mounted on the top of the front and rear sides of the hopper 59 via rotating shafts. The telescopic ends of the two rods 512 are rotatably connected to the outer sides of the shafts of the front and rear baffles 511 via rotating shafts. The miniature electric telescopic rods 512 are electrically connected to the controller 4. The miniature electric telescopic rods 512 have built-in potentiometer position feedback, which can provide real-time feedback to the controller 4 on the flip angle of the baffles 511. There are two tank shells 513, which are respectively installed on the middle of the outer sides of the left and right mounting brackets 510. The inner cavity of the first connecting seat 514 has grooves that communicate with the outside on both the upper and lower sides. There are two first connecting seats 514, which are respectively installed on the top of the left and right tank shells 513. The outer side of the tank body; there are two tank body rods 515, one end of which is rotatably mounted on the inner outer end of the left and right first connecting seats 514 via a rotating shaft. The tank body rods 515 pass through the upper and lower sides of the tank body shell 513. The tank body rods 515 have guide grooves adapted to the connecting pin seats 518, which can transmit the thrust of the second miniature electric telescopic rod 517; there are two limiting rods 516, one end of which is rotatably mounted on the inner end of the left and right first connecting seats 514 via a rotating shaft. The limiting rods 516 pass through the upper and lower sides of the tank body shell 513; there are two second miniature electric telescopic rods 517, which are respectively mounted on the left and right sides of the tank body shell 513. On the outer side of the inner cavity, the second miniature electric telescopic rod 517 is electrically connected to the controller 4. The miniature electric telescopic rod 517 has a self-locking function to prevent the clamping module 519 from accidentally coming loose. There are several connecting pin seats 518, which are installed on the inner side of the telescopic ends of the two second miniature electric telescopic rods 517 on the left and right. The two connecting pin seats 518 are respectively inserted into the inner cavity of the two groove rods 515 on the left and right. There are two clamping modules 519, which are respectively set below the outer shells 513 of the two grooves on the left and right. The clamping modules 519 are electrically connected to the controller 4. The clamping modules 519 are electric clamping modules. The inner side of the clamping claws is equipped with a silicone buffer pad, which not only enhances the friction to prevent the packaged bag from slipping, but also avoids damaging the bag.There are two second connecting seats 520, which are respectively installed on the top of the left and right clamping modules 519. The other ends of the left and right slot rods 515 and the limiting rods 516 are rotatably connected to the inner sides of the left and right second connecting seats 520 via rotating shafts.

[0019] The specific work steps are as follows: Step 1: The controller 4 starts the internal preset initialization program, and simultaneously activates the sensing and indicating system 6, the weighing device 1 and the clamping module 519 of the sample preparation mechanism. The sensing and indicating system 6 guides the coal transport vehicle to be tested to accurately drive into the load-bearing area of ​​the weighing device 1 through built-in LED indicator lights and voice prompts. After the vehicle stops, the weighing device 1 automatically collects the weight of the whole vehicle containing coal and uploads the real-time weighing data to the database of the controller 4 with encryption, as the basic data for subsequent coal quality testing. The staff puts the clean sample packaging bag between the two sets of clamping modules 519 in advance. The clamping modules 519 clamp and fix the open end of the packaging bag symmetrically. Step 2: The controller 4's internal preset program starts the dual-end three-axis moving platform 22, the first motor 26, the electric telescopic rod 24, the fourth motor 220, the second motor 29, the third motor 210, the connector valve 218, and the first vacuum conveyor 53. The dual-end three-axis moving platform 22 drives the vertical frame 23 on one side to move to the sampling point position above the coal truck's hopper. The first motor 26 drives the deep hole drill bit 27 to rotate at high speed, and the electric telescopic rod 24 shortens accordingly, driving the vertical mounting frame 25 and the deep hole drill bit 27 to move downwards, drilling a hole of a specified depth at the designated location of the coal in the hopper, penetrating the surface of the coal that may be lumpy or mixed with impurities, and reaching the target area. In the homogeneous coal seam area, after drilling, the electric telescopic rod 24 extends and resets, driving the deep hole drill bit 27 out of the hole. The double-ended three-axis moving platform 22 then moves the vertical frame 23 out of the truck bed area to avoid interfering with subsequent sampling. The double-ended three-axis moving platform 22 switches to the lifting component on the other side and moves it directly above the newly drilled hole. The fourth motor 220 in the lifting component starts, driving the gear rack assembly 223 to rotate. Under the force of the gear, the rack drives the moving frame 222 to move downward along the limiting component 221, sending the sampling component below into the hole to the specified depth. In the initial state, the connecting rope 217 inside the reel 212 of the sampling component is slack. In the relaxed state, the flexible connecting cylinder 216 is vertical from top to bottom. If it is necessary to collect coal samples around the borehole wall, the second motor 29 at the corresponding position drives the reel 212 to rotate, or the third motor 210 at the corresponding position drives the gear in the gear assembly 211 to rotate, causing the gear on the other side of the gear assembly 211 to drive the reel 212 at the corresponding position to rotate. This causes the reel 212 at the current position to wind the connecting rope 217 and generate tension. The second motor 29 at the other side drives the reel 212 to reverse, or the third motor 210, in cooperation with the gear assembly 211, drives the reel 212 to reverse and release the connecting rope 217 to remain relaxed. The connecting rope 217 at the corresponding position then drives... The bottom annular plate 214 is offset to a designated position. The upper and lower adjacent annular plates 214 are linked by spring 215 and flexible connecting tube 216. Under the balance of tension and elasticity, the bottom annular plate 214 drives the end of the flexible suction tube 213 to bend to a preset angle in a designated direction. Then, the second motor 29 and the third motor 210 stop rotating and lock the posture. After the sampling posture is fixed, the connector valve 218 is opened to connect the flexible suction tube 213 and the first vacuum conveyor 53. The first vacuum conveyor 53 starts to generate negative pressure, which sucks the homogeneous coal sample in the hole into the first vacuum conveyor 53 along the flexible suction tube 213 and connector valve 218, thus completing the sampling. Step 3: The controller 4's internal preset program controls the crusher 54, the second vacuum conveyor 55, the diversion pipe 57, the second micro electric telescopic rod 517, the first micro electric telescopic rod 512, and the clamping module 519. The first vacuum conveyor 53 directly discharges the collected coal sample into the crusher 54. After the crusher 54 starts, it crushes the coal sample to the specified particle size. The crushed coal sample falls into the separator 51 below by gravity. The separator 51 divides the coal sample according to a preset ratio, retaining a small portion of the coal sample as a representative sample for subsequent testing; the majority of the discarded sample enters the second vacuum conveyor 55. The second vacuum conveyor 55 transports the discarded sample to the diversion pipe 57. The electric valve in the pipe switches according to the program, guiding the discarded sample into the designated collection bag 58. When the collection bag 58 is full, the staff removes it, and the discarded sample can be returned to the original coal flow or sent to the designated storage area to avoid waste. The representative sample retained by the separator 51 falls into the diversion pipe. The sample is temporarily stored in the hopper 59. The second miniature electric telescopic rods 517 on the left and right sides extend, pushing the connecting pin seat 518 to move inward along the groove of the groove rod 515. This causes the groove rod 515 to rotate inward around the first connecting seat 514. Under the limiting support of the limiting rod 516, the clamping module 519 will cause the left and right opening ends of the packaging bag to open by a certain gap. The first miniature electric telescopic rods 512 on the front and rear sides shorten, pulling the baffle 511 to flip outward around the mounting frame 510. The baffle 511 will both open the front and rear ends of the packaging bag, further expanding the bag opening area, and remove the obstruction to the outlet of the hopper 59, forming a sample receiving channel. After the bag opening is fully opened, the sample in the hopper 59 falls into the packaging bag by gravity. After packaging is completed, the grippers of the clamping module 519 are released, and the staff removes the packaging bag, attaches the electronic tag generated in advance by the system to the bag, and then sends it to the laboratory to wait for subsequent testing.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart integrated coal sampling and processing device for thermal power plants, characterized in that, include: Weighing equipment (1); Select a sampling mechanism (2) and set it outside the weighing device (1); The working platform (3) is located on the outside of the weighing device (1) to the right rear. The controller (4) is installed at the top right rear of the working platform (3), and the weighing device (1) and the controller (4) are electrically connected; The sample preparation mechanism (5) is located inside the working platform (3); A sensing indicator system (6) is located on the outside left front of the weighing device (1), and the sensing indicator system (6) is electrically connected to the controller (4).

2. The intelligent integrated coal sampling and processing device for thermal power plants according to claim 1, characterized in that: The selective sampling mechanism (2) includes: A gantry frame (21) is installed outside the weighing device (1) along the front-to-back direction; A dual-end three-axis moving platform (22) is fixedly installed on the top of the outer surface of the gantry (21), and the dual-end three-axis moving platform (22) and the controller (4) are electrically connected; The dual-end three-axis moving platform (22) has a pre-drilled hole component on one side of its moving end, a sampling component below the other side of its moving end, and a lifting component above the sampling component.

3. The intelligent integrated coal sampling and processing device for thermal power plants according to claim 2, characterized in that: The pre-drilled component includes: A vertical frame (23) is fixedly installed in the vertical direction on the front side of the moving end of the dual-end three-axis moving platform (22); An electric telescopic rod (24) is fixedly installed on the inner side of the vertical frame (23) in the vertical direction, and the electric telescopic rod (24) is electrically connected to the controller (4); A vertical mounting bracket (25) is fixedly installed on the top outer side of the telescopic end of the electric telescopic rod (24) in the vertical direction; The first motor (26) is installed on the bottom front side of the outer surface of the vertical mounting bracket (25), and the first motor (26) is electrically connected to the controller (4); The deep hole drill bit (27) is installed at the bottom of the rotating end of the first motor (26) in the vertical direction.

4. The intelligent integrated coal sampling and processing device for thermal power plants according to claim 3, characterized in that: The sampling component includes: The outer casing (28) is disposed below the moving end of the dual-end three-axis moving platform (22); The second motor (29) has two motors (29). The two second motors (29) are respectively installed on the bottom left and right sides of the outer surface of the outer shell (28). The rotating end of the second motor (29) extends into the inner cavity of the outer shell (28). The second motor (29) is electrically connected to the controller (4). The third motor (210) has two motors (210). The two motors (210) are respectively installed on the top of the left and right sides of the outer surface of the housing (28). The rotating end of the third motor (210) extends into the inner cavity of the housing (28). The third motor (210) is electrically connected to the controller (4). Gear assembly (211), the number of gear assemblies (211) is two, and the gears on one side of the two gear assemblies (211) are respectively installed on the inner side of the rotating end of the left and right third motors (210); The reel (212) has two sets, and the two sets of reels (212) are two in total. One set of reels (212) is installed on the inner side of the rotating end of the left and right outer shells (28), and the other set of reels (212) is installed on the front and rear ends of the top of the left and right sides of the inner cavity of the outer shell (28) through a rotating shaft, and the shaft is connected to the gear key on the other side of the left and right gear assemblies (211).

5. The intelligent integrated coal sampling and processing device for thermal power plants according to claim 4, characterized in that: The sampling component also includes: A flexible inhalation tube (213) is installed on the bottom of the outer surface of the housing (28) in the vertical direction, and the top end of the flexible inhalation tube (213) extends into the inner cavity of the housing (28); Annular plate (214), the number of annular plates (214) is several, and several annular plates (214) are installed at intervals from top to bottom on the outer wall of the flexible suction tube (213); Spring (215), the number of springs (215) is several groups, the number of springs (215) in each group is four, and the several groups of springs (215) are fixedly installed at ninety degrees intervals along the circumference at the four corners of the inner side of two adjacent annular plates (214); A flexible connecting tube (216) is provided, and the number of flexible connecting tubes (216) is several. The several flexible connecting tubes (216) are respectively installed on the outer side of two adjacent annular plates (214) along the circumferential direction. Connecting rope (217), there are four connecting ropes (217), one end of each of the four connecting ropes (217) is fixedly installed on the outside of the two sets of reels (212), and the other end of each of the four connecting ropes (217) passes through the inside of several annular plates (214) and is fixedly connected to the top of the bottommost annular plate (214), and the four connecting ropes (217) are located inside each set of four springs (215); A connector valve (218) is installed at the bottom of the inner cavity of the housing (28). The inlet of the connector valve (218) is connected to the top of the flexible suction tube (213). The outlet of the connector valve (218) extends out of the rear side of the housing (28). The connector valve (218) is electrically connected to the controller (4).

6. The intelligent integrated coal sampling and processing device for thermal power plants according to claim 5, characterized in that: The sample preparation mechanism (5) includes: The splitter (51) is fixedly installed on the inner bottom of the working platform (3) in the vertical direction; A fixed frame (52) is fixedly installed on the top of the outer surface of the splitter (51) in the vertical direction; The first vacuum conveyor (53) is installed on the top of the outer surface of the fixed frame (52). The inlet of the first vacuum conveyor (53) is connected to the outlet of the connector valve (218) through a flexible connecting pipe. The first vacuum conveyor (53) and the controller (4) are electrically connected. The crusher (54) is installed on the inner bottom of the fixed frame (52). The top inlet of the crusher (54) is connected to the bottom outlet of the first vacuum conveyor (53). The outlet of the crusher (54) is connected to the inlet of the separator (51). The crusher (54) and the controller (4) are electrically connected. The second vacuum conveyor (55) is located on the front side of the bottom of the divider (51). The inlet of the second vacuum conveyor (55) is connected to the waste port of the divider (51). The second vacuum conveyor (55) and the controller (4) are electrically connected. The base frame (56) is disposed on the outer front side of the second vacuum conveyor (55); The diversion pipe (57) is fixedly installed on the top of the outer surface of the base frame (56). The inlet of the diversion pipe (57) is connected to the outlet of the second vacuum conveyor (55) through a pipeline. The diversion pipe (57) and the controller (4) are electrically connected. Collection bag (58), the number of collection bags (58) is several, and several collection bags (58) are detachably installed below the discharge port of the diversion pipe (57).

7. The intelligent integrated coal sampling and processing device for thermal power plants according to claim 6, characterized in that: The sample preparation mechanism (5) also includes: A feeding hopper (59) is installed at the bottom of the separator (51), and the top inlet of the feeding hopper (59) is connected to the bottom of the outlet of the separator (51). Mounting bracket (510), there are two mounting brackets (510), and the two mounting brackets (510) are respectively installed on the left and right sides of the outer surface of the hopper (59); Two baffles (511) are provided, and the two baffles (511) are respectively rotatably installed on the inner front and rear ends of the left and right mounting brackets (510) via a rotating shaft. The first micro electric telescopic rod (512) has two components. The two first micro electric telescopic rods (512) are respectively installed on the top of the front and rear sides of the hopper (59) through a rotating shaft. The telescopic ends of the two first micro electric telescopic rods (512) are respectively connected to the outer side of the axis of the front and rear baffles (511) through a rotating shaft. The first micro electric telescopic rod (512) and the controller (4) are electrically connected. The number of the two tank shells (513) is two. The two tank shells (513) are respectively installed on the outer middle of the left and right mounting brackets (510). The inner cavity of the first connecting seat (514) is provided with a groove that communicates with the outside on both the upper and lower sides. The first connecting seat (514) has two components, and the two first connecting seats (514) are respectively installed on the outer side of the top groove of the left and right groove shells (513). The groove rod (515) has two parts. One end of each groove rod (515) is rotatably installed on the inner and outer ends of the left and right first connecting seats (514) through a rotating shaft. The groove rod (515) passes through the upper and lower sides of the groove shell (513). Limiting rod (516), there are two limiting rods (516), one end of each limiting rod (516) is rotatably installed on the inner side of the left and right first connecting seats (514) through a rotating shaft, and the limiting rod (516) passes through the upper and lower sides of the groove shell (513).

8. The intelligent integrated coal sampling and processing device for thermal power plants according to claim 7, characterized in that: The sample preparation mechanism (5) also includes: The second miniature electric telescopic rod (517) has two parts. The two miniature electric telescopic rods (517) are respectively installed on the outer side of the inner cavity of the left and right two slot shells (513). The second miniature electric telescopic rod (517) and the controller (4) are electrically connected. Connecting pin seat (518), the number of connecting pin seats (518) is several, the several connecting pin seats (518) are installed on the inner side of the telescopic end of the left and right second miniature electric telescopic rods (517), and the left and right connecting pin seats (518) are respectively inserted into the inner cavity of the left and right slot rods (515). The clamping module (519) has two clamping modules (519), which are respectively located below the left and right slot shells (513). The clamping module (519) is electrically connected to the controller (4). The second connecting seat (520) has two parts. The two second connecting seats (520) are respectively installed on the top of the left and right clamping modules (519). The other ends of the left and right groove rods (515) and the limiting rods (516) are respectively rotatably connected to the inner side of the left and right second connecting seats (520) through a rotating shaft.

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