Intelligent online accurate metering system for coal-water separation

Abstract

The invention discloses a coal-water separation intelligent on-line accurate metering system, which comprises a separation weighing unit, a coal-water supply unit and a metering control unit, the separation weighing unit comprises a separation bin, an overflow bin and a slag-water weighing frame, the outer side wall of the separation bin is provided with supporting legs, the top of the separation bin is provided with a feed port, and the top of the separation bin is provided with a discharge port. The feed port is communicated with a discharge port of the coal water supply unit, and the metering control unit is connected with the coal water supply unit and used for controlling starting and stopping of the coal water supply unit; a plurality of layers of filter screens are arranged in the separation bin below the feed port at intervals from top to bottom, the discharge ends of the filter screens are obliquely arranged forwards and downwards, and the sizes of filter holes of the filter screens are reduced layer by layer from top to bottom; the invention aims to realize efficient graded filtration and accurate real-time metering of coal aggregate, and overflow slag water can be directly used for other treatment steps, so that the resource utilization rate and the production efficiency are improved, and meanwhile, the environmental pollution is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal-water separation metering, and in particular relates to an intelligent online precise metering system for coal-water separation. Background Art

[0002] Coal-water separation, the process of separating usable coal aggregate from water containing coal particles, is an essential step in coal mining and washing. Accurately measuring data such as the quantity and size distribution of coal aggregate in the coal-water mixture, as well as the amount of slag-water discharged, is crucial. Inaccurate measurement can lead to wasted resources, increased production costs, unstable product quality, and even environmental violations due to excessive slag-water discharge.

[0003] Traditional coal-water separation metering systems often suffer from low accuracy and automation, making them difficult to meet the demands of modern industry for efficient and precise processing. This is particularly true for coal aggregate weighing. While traditional coal-water separation metering systems can continuously filter and separate coal and water, the continuous filtering and discharge of coal aggregate during the weighing process necessitates equipment downtime for accurate weighing. This not only reduces overall work efficiency, but also increases labor costs and the risk of additional losses from production line interruptions. This downtime for weighing makes continuous operation impossible, significantly limiting production capacity. Frequent equipment starts and stops also accelerates wear and tear, increasing maintenance costs. Summary of the Invention

[0004] In response to the defects and problems of the existing coal-water separation metering system, the present invention provides an intelligent online precise metering system for coal-water separation, which aims to achieve efficient graded filtration and precise real-time metering of coal aggregates, and enable overflow slag water to be directly used in other processing steps, thereby improving resource utilization and production efficiency, and reducing environmental pollution.

[0005] The solution adopted by the present invention to solve its technical problems is: an intelligent online precise metering system for coal-water separation, including a separation weighing unit, a coal-water supply unit and a metering control unit, the separation weighing unit including a separation bin, an overflow bin and a slag water weighing frame, the outer wall of the separation bin is provided with supporting legs, the top of the separation bin is provided with a feed port, the feed port is connected with the discharge port of the coal-water supply unit, and the metering control unit is connected to the coal-water supply unit; multiple layers of filter screens are arranged from top to bottom in the separation bin below the feed port, the discharge end of the filter screen is tilted forward and downward, and the filter hole size of the filter screen is reduced layer by layer from top to bottom; the discharge end of each layer of filter screen is connected to a continuous weighing device, and the continuous weighing device is connected to the metering control unit The quantity control unit controls the connection and is used for uninterrupted weighing and metering of the filtered aggregates at each level; a discharge window is matched on the outer wall of the separation bin on the discharge side of each layer of the continuous weighing device, and an aggregate conveying device matched with the discharge end of the continuous weighing device is provided on the outside of the discharge window. The overflow bin is installed below the separation bin through the slag water weighing frame. The overflow bin is connected with the separation bin, and the two are not in contact; a slag discharge port is provided at the bottom of the overflow bin, and a slag discharge valve connected to the metering control unit is matched and installed on the slag discharge port; an overflow hole is provided on the side wall of the overflow bin away from the filter screen, and an overflow pipe is installed. A flow sensor connected to the metering control unit is provided in the overflow pipe for measuring the slag water liquid discharge.

[0006] The coal-water supply unit includes a coal-water storage tank and a supply pump. The supply pump is installed on one side of the coal-water storage tank and is connected to the metering control unit.

[0007] The continuous weighing device includes a platform plate, a transverse driving mechanism, a belt conveyor, a weighing frame and a baffle. The platform plate is installed in the separation bin below the filter along the transverse sliding path and is connected to the transverse driving mechanism. Two belt conveyors are arranged transversely on the upper edge of the platform plate. Both belt conveyors are installed on the platform plate through the weighing frame, and the belt conveyor and the weighing frame are connected to the metering control system unit. The baffle is fixedly installed in the separation bin on the discharge side of the belt conveyor. The metering control unit controls the platform plate through the transverse driving mechanism to drive the two belt conveyors to slide transversely and alternately dock the filter discharge end, and the conveying channel discharge end of the belt conveyor docked with the filter will be blocked by the baffle.

[0008] The metering control unit includes an online data processor and a controller. The online data processor is connected to the flow sensor, the slag-water weighing frame and the weighing frame of each layer of continuous weighing device to obtain real-time metering data; the controller is controlled and connected with the coal-water supply unit, the slag discharge valve, the transverse drive mechanism of each layer of continuous weighing device and the belt conveyor.

[0009] The weighing frame includes multiple weighing support columns installed on the platform plate below the belt conveyor. The weighing support columns include support rods, guide sleeves and weighing sensors. The guide sleeves are fixedly installed on the platform plate. The weighing sensors are installed in the guide sleeves and connected to the metering control unit. The support rods are installed in the guide sleeves above the weighing sensors along the vertical sliding direction, and the bottom ends of the support rods are in contact with the weighing sensors. The top ends of the support rods extend upward out of the guide sleeves and are fixedly connected to the frame of the belt conveyor.

[0010] The belt conveyor is symmetrically provided with skirt plates on both sides, and the conveying channel of the belt conveyor is formed between the two skirt plates. The end faces of the skirt plates for discharging materials of the belt conveyor are flush with the end faces of the baffle plates for blocking materials.

[0011] The conveyor belt of the belt conveyor is provided with drainage holes penetrating the belt body, and the aperture of the drainage holes is smaller than the size of the filter holes on the filter screen at the same layer.

[0012] A shelf is provided on one side of the platform plate between the two belt conveyors and close to the filter screen.

[0013] Beneficial effects of the present invention: The intelligent online precise metering system for coal-water separation provided by the present invention has the following beneficial effects: 1. This invention provides an intelligent, online, precise metering system for coal-water separation. By installing multiple layers of filter screens within a separation chamber, with the filter pore size decreasing from top to bottom, this system effectively filters coal aggregates of varying sizes in a graded manner. This approach not only improves the separation efficiency of coal aggregates from coal-water mixtures, but also ensures the quality of each aggregate grade.

[0014] 2. This invention provides an intelligent, online, precise metering system for coal-water separation. Its continuous weighing device and flow sensor enable accurate, real-time measurement of various data, including the weight of coal aggregate filtered at each stage, the amount of liquid discharged from the slag water (if there is liquid overflow), and the weight of the slag slurry. This facilitates more accurate production data, providing a reliable basis for subsequent processing or sales, while also enabling better monitoring and optimization of the entire production process.

[0015] 3. This invention provides an intelligent online precision metering system for coal-water separation. The entire system utilizes an intelligent design. In particular, the metering control unit automatically controls the opening and closing of the coal-water supply unit, monitors the operating status of the continuous weighing device, and manages the discharge of slag-water liquid. This highly automated design reduces the need for manual intervention and labor intensity, while improving work efficiency and safety.

[0016] 4. The intelligent online precision metering system for coal-water separation provided by this invention utilizes a transverse drive mechanism to control two belt conveyors to alternately connect to the filter screen discharge end. This design ensures accurate weighing while enabling non-stop operation, greatly improving the overall system's operating efficiency and stability.

[0017] 5. This invention provides an intelligent, online, precise metering system for coal-water separation. By monitoring the amount of slag-water discharged (via an overflow bin and flow sensors), this system not only helps reduce environmental pollution, meeting modern industrial environmental protection requirements, but also allows overflow slag-water to be directly used in other coal processing steps, such as coal washing. This not only effectively utilizes resources and reduces waste, but also lowers processing costs and increases economic benefits.

[0018] 6. This invention provides an intelligent, online, precise metering system for coal-water separation. Based on real-time monitoring data, the metering control unit can immediately make necessary adjustments to the system, such as adjusting the operating status of the coal-water supply unit and controlling the opening and closing of the slag discharge valve. This adapts to the processing requirements of different operating conditions and ensures that the system is always in optimal working condition. This instant feedback and adjustment mechanism further enhances the system's flexibility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the coal-water supply unit of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the separation bin of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the continuous weighing device of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the transverse driving mechanism of the present invention.

[0024] Figure 6 It is a schematic structural diagram of the overflow bin of the present invention.

[0025] Figure 7 This is a diagram showing the connection relationship of the metering control unit of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the suction buffer rack of the present invention.

[0027] The numbers in the figure are: 1 is the overflow bin, 11 is the weighing support leg, 12 is the overflow pipe, 2 is the separation bin, 21 is the support leg, 3 is the coal-water supply unit, 31 is the supply pump, 32 is the conveying pipeline, 33 is the suction pipeline, 34 is the frame, 35 is the support rod, 36 is the buffer spring, 4 is the aggregate conveyor belt, 5 is the continuous weighing device, 51 is the platform plate, 52 is the belt conveyor, 521 is the skirt plate, 53 is the support rod, 54 is the guide sleeve, 55 is the transverse drive mechanism, 551 is the screw, 552 is the screw sleeve, 56 is the slide rail, 57 is the baffle, 58 is the shelf, the weighing frame and the baffle, and 6 is the filter screen. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and examples. Example

[0029] This embodiment provides an intelligent online precise metering system for coal-water separation. Figure 1-7 As shown, it includes a separation weighing unit, a coal-water supply unit 3 and a metering control unit. The separation weighing unit includes a separation bin 2, an overflow bin 1 and a slag-water weighing frame. The outer wall of the separation bin 2 is provided with a support leg 21 for supporting the separation bin 2 to prevent the device from tipping over; a feed port is provided on the top of the separation bin 2, which is connected to the discharge port of the coal-water supply unit. The metering control unit is connected to the coal-water supply unit. The coal-water supply unit includes a coal-water storage tank and a supply pump. The supply pump 31 is installed on one side of the coal-water storage tank and is connected to the metering control unit. Specifically: the suction end of the supply pump 31 is connected to a suction pipe 33, and the suction end of the suction pipe 33 extends into the coal-water storage tank. The discharge end of the supply pump 31 is connected to a delivery pipe 32, and the other end of the delivery pipe 32 is connected to the feed port at the top of the separation bin 2. When the metering control unit controls the supply pump 31 to work, the supply pump will extract the coal and water in the coal-water storage tank and discharge the device into the separation bin for separation and weighing.

[0030] The suction end of the suction pipe is matched with a suction buffer rack. Figure 8 As shown, the suction buffer frame includes a frame body 34 fixedly mounted on the suction pipe 33. Sliding holes are provided in the vertical direction at the four top corners of the frame body 34, and a support rod 35 is slidably mounted thereon. Anti-slip plates are matched and installed on the upper and lower ends of the support rod 35. Buffer springs 36 are mounted on the support rod between the anti-slip plate at the bottom end of the support rod 35 and the frame body 34. When the supply pump starts suction, the negative pressure generated by the suction of the suction pipe 33 will drive the frame body 34 to move downward to hydraulically lock the buffer springs 36 on each support rod 34, so that the suction end of the suction pipe 33 can be close to the bottom of the pool without contacting the bottom of the pool during operation.

[0031] like Figure 2As shown, multiple layers of filter screens 6 are arranged from top to bottom in the separation bin below the feed port, the discharge end of the filter screen is tilted forward and downward, and the filter hole size of the filter screen is reduced layer by layer from top to bottom, so that after the coal water is discharged into the separation bin, the filter screen will filter out the coal aggregate in the coal water layer by layer from top to bottom, and the water in the coal water will directly pass through the filter screen holes and flow downward into the overflow bin. There are many ways to fix the filter screen 6. For example, a plurality of fixing rods are arranged at anti-directional intervals along the bottom of each filter screen 6, and the two ends of the fixing rods are fixedly connected to the inner bin walls on the left and right sides of the separation bin respectively.

[0032] The discharge end of each layer of filter screen 6 is connected to a continuous weighing device 5, which is controlled and connected to the metering control unit for uninterrupted weighing and metering of the aggregates at each level filtered out. A discharge window is provided on the outer side wall of the separation bin on the discharge side of each layer of the continuous weighing device. An aggregate conveying device is provided outside the discharge window and is connected to the discharge end of the continuous weighing device for conveying the weighed aggregates to the corresponding area. Specifically: like Figure 3 and Figure 4 As shown, the continuous weighing device 5 includes a platform plate 51, a transverse driving mechanism 55, a belt conveyor 52, a weighing frame and a baffle 57. The platform plate 51 is installed in the separation chamber below the filter screen in a transverse sliding manner and is connected to the transverse driving mechanism. The transverse driving mechanism is connected to the metering control unit. The metering control unit drives the platform plate 51 to slide back and forth intermittently through the transverse driving mechanism. Specifically: There are many ways to install the platform plate for horizontal sliding, for example: a plurality of slide rails 56 are provided in the separation bin below the platform plate at longitudinal parallel intervals, and each slide rail 56 is matched with a set of rail pulleys, which can only slide horizontally along the slide rails, and the rail pulleys are fixedly connected to the bottom surface of the platform plate; the transverse driving mechanism includes a screw sleeve 552 fixedly installed horizontally on the bottom of the platform plate 51, and a screw 551 is matched and installed in the screw sleeve 552, and the two ends of the screw 551 are respectively rotatably installed on the inner bin walls on the left and right sides of the separation bin, and one end of the screw extends outward from the separation bin and is transmission-connected to a drive motor, which is control-connected to the metering control unit. When the metering control unit controls the drive motor to drive the screw to rotate, the screw will drive the platform plate to slide horizontally along the slide rail.

[0033] Two belt conveyors 52 are arranged horizontally on the upper edge of the platform plate. Skirts 521 are symmetrically provided on both sides of the belt conveyor 52. The conveying channel of the belt conveyor is between the two skirts 521. When the platform plate moves horizontally and the belt conveyor 52 docks with the filter screen, the coal aggregate rolling down the filter screen will roll onto the conveying channel of the horizontal belt conveyor. Both belt conveyors are installed on the platform plate through a weighing frame, and the belt conveyor and the weighing frame are connected to the metering control system unit. The metering control unit is connected to the belt conveyor to control the start and stop of the belt conveyor. The metering control system unit is connected to the weighing frame to detect the real-time weight of the belt conveyor, thereby measuring the weight of the material accumulated on the belt conveyor. Specifically: like Figure 3 As shown, the weighing frame includes four weighing support columns installed on the platform plate below the belt conveyor. The weighing support columns include a support rod 53, a guide sleeve 54 and a weighing sensor. The guide sleeve is fixedly installed on the platform plate, and the weighing sensor is installed in the guide sleeve and connected to the metering control unit; the support rod is installed in the guide sleeve above the weighing sensor along the vertical sliding direction, and the bottom end of the support rod is in contact with the weighing sensor, and the top end of the support rod extends upward from the guide sleeve and is fixedly connected to the frame of the belt conveyor. The metering control unit accurately obtains the real-time weight data of the belt conveyor through the weight changes detected by the four weighing sensors in the weighing frame.

[0034] Furthermore, the conveyor belt of the belt conveyor is provided with drainage holes penetrating the belt body, and the aperture of the drainage holes is smaller than the size of the filter holes on the filter screen of the same layer.

[0035] The baffle is fixedly installed in the separation bin on the discharging side of the belt conveyor, and the end face of the skirt of the belt conveyor is flush with the baffle end face of the baffle. The metering control unit controls the platform plate through the transverse drive mechanism to drive the two belt conveyors to slide horizontally and alternately dock with the filter discharge end, thereby realizing continuous coal aggregate weighing, and the conveying channel discharge end of the belt conveyor docked with the filter will be blocked by the baffle.

[0036] The aggregate conveying device includes aggregate conveyor belts symmetrically arranged on the left and right sides of the baffle. The aggregate conveyor belts extend into the separation bin through the window. The belt conveyor on the platform plate that is not connected to the filter will be connected to the aggregate conveyor belt on the same side. Therefore, when the belt conveyor that is not connected to the filter is started, it will transport the coal aggregate accumulated on the conveyor belt to the aggregate conveyor belt connected to it, and then transport it to the corresponding processing area via the aggregate conveyor belt.

[0037] The overflow bin 1 is installed below the separation bin through a slag water weighing rack. The slag water weighing rack includes four weighing support legs 11 installed on the outer wall of the overflow bin. A weighing sensor connected to the metering control unit is installed at the bottom of each weighing support leg 11. The metering control unit can accurately obtain the real-time weight data of the overflow bin through the four weighing sensors in the slag water weighing rack.

[0038] The overflow bin 1 is connected to the separation bin 2, and the two are not in contact. For example, the bottom of the separation bin 2 and the top of the overflow bin 1 are both open, and the bottom of the separation bin 2 is matched and inserted into the top of the separation bin 2, and the two are not in contact, so that the slag water after the coal water is filtered by the filter will be directly discharged downward into the overflow bin; the bottom of the overflow bin 1 is conical and provided with a slag discharge port, and the slag discharge port is matched with a slag discharge valve connected to the metering control unit; the metering control unit calculates the amount of slag slurry sediment in the overflow bin 1 according to the weight of the overflow bin. When the slag slurry sediment in the overflow bin 1 reaches a preset value, the metering control unit controls the slag discharge valve to open outward to discharge the slurry; the side wall of the overflow bin away from the filter side is provided with an overflow hole, and an overflow pipe 12 is installed. The overflow pipe is provided with a flow sensor connected to the metering control unit for measuring the slag water liquid discharge.

[0039] The metering control unit includes an online data processor and a controller. The online data processor is connected to the flow sensor, the slag water weighing frame and the weighing frame of each layer of continuous weighing device to obtain real-time metering data; the controller is connected to the coal-water supply unit, the slag discharge valve, the transverse drive mechanism of each layer of continuous weighing device and the belt conveyor control.

[0040] When the intelligent online precise metering system for coal-water separation provided by this embodiment is in use, the metering control unit will control the coal-water supply unit to continuously discharge the coal-water to be processed into the separation bin, and the coal-water pumped into the separation bin will be filtered through the filter in turn to filter out the coal aggregates of corresponding sizes. The filtered coal aggregates will roll down from the filter to the belt conveyor connected to the filter discharge end in the continuous weighing device, and under the action of the baffle, the coal aggregates will accumulate on the belt conveyor. When the metering control unit controls the platform plate through the transverse driving mechanism to drive the two belt conveyors to slide horizontally and alternately connect to the filter discharge end, the belt conveyor originally connected to the filter will stop conveying, thereby preventing the accumulation of coal aggregates on the belt conveyor during the alternation process. The material is discharged directly due to the loss of the baffle block. After the other belt conveyor is docked with the filter, the coal aggregates rolling along the filter will all roll onto the new belt conveyor, so that the metering control unit can detect the accurate weight of the coal aggregates on the belt conveyor originally docked with the filter through the weighing frame. After obtaining the accurate weight, the metering control unit will control the belt conveyor to start and discharge the coal aggregates to the corresponding aggregate conveying device for transportation. Then the metering control unit will control the platform plate through the transverse drive mechanism to drive the two belt conveyors to slide horizontally, so that the belt conveyor that has discharged the coal aggregates will replace the other belt conveyor to dock with the filter, thereby realizing accurate weighing and metering of aggregates at all levels without stopping the machine, thereby improving the efficiency of separation and weighing.

[0041] The intelligent online precise metering system for coal-water separation provided in this embodiment realizes efficient graded filtration and precise metering of the coal-water mixture through the coordinated work of the coal-water supply unit, the separation weighing unit, the aggregate conveying device and the metering control unit. The multi-layer filter screens installed in the separation bin can grade the coal-water mixture, while the continuous weighing device under each layer of filter screen ensures the uninterrupted and accurate weighing of the coal aggregate. The design of the belt conveyor and the transverse drive mechanism enables the coal aggregate to be operated without stopping during the discharge process, thereby improving work efficiency. The overflow bin and its components effectively manage the collection and discharge of the residual liquid and fine particles after filtration, while the use of flow sensors ensures the precise monitoring of the discharge volume of the slag water liquid. The entire system is intelligently controlled by the metering control unit, which not only realizes the real-time collection and analysis of data, but also optimizes the operating efficiency of the system, ensuring the intelligence, automation and precision of the entire process. This design significantly improves the efficiency and accuracy of the coal-water separation operation. Example

[0042] The difference between Example 2 and Example 1 is as follows Figure 4 As shown, a shelf 58 is provided on the side of the platform plate 51 between the two belt conveyors near the filter screen. The shelf 58 is an inverted V-shaped structure. A plurality of fixed columns are arranged at longitudinal intervals on the bottom of the shelf 58. The bottom ends of the fixed columns are fixedly mounted on the platform plate 51 between the two belt conveyors, and the shelf 58 is located above the belt conveyors. The two inclined ends of the shelf 58 extend to the left and right sides respectively to the top of the conveying channels of the two belt conveyors. Therefore, when the platform plate moves and drives the two belt conveyors to move horizontally and alternately dock with the filter screen, when the other belt conveyor is completely docked or separated from the discharge end of the filter screen, the coal aggregate rolling along the filter screen will be guided and diverted into the two belt conveyors through the shelf plate.

[0043] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. An intelligent online precise metering system for coal-water separation, characterized in that: It includes a separation weighing unit, a coal-water supply unit and a metering control unit. The separation weighing unit includes a separation bin, an overflow bin and a slag-water weighing frame. The outer wall of the separation bin is provided with a supporting leg. The top of the separation bin is provided with a feed port, which is communicated with the discharge port of the coal-water supply unit. The metering control unit is connected to the coal-water supply unit. Multiple layers of filter screens are arranged from top to bottom in the separation bin below the feed port. The discharge end of the filter screen is tilted forward and downward, and the filter pore size of the filter screen decreases layer by layer from top to bottom. A continuous weighing device is provided at the discharge end of each layer of filter screen. The continuous weighing device is controlled and connected with the metering control unit for weighing the filtered The graded aggregate is continuously weighed and measured; a discharge window is matched on the outer side wall of the separation bin on the discharge side of each layer of the continuous weighing device, and an aggregate conveying device matched with the discharge end of the continuous weighing device is provided outside the discharge window. The overflow bin is installed below the separation bin through the slag water weighing frame. The overflow bin is connected with the separation bin, and the two are not in contact; a slag discharge port is provided at the bottom of the overflow bin, and a slag discharge valve connected to the metering control unit is matched and installed on the slag discharge port; an overflow hole is provided on the side wall of the overflow bin away from the filter screen, and an overflow pipe is installed. A flow sensor connected to the metering control unit is provided in the overflow pipe for measuring the slag water liquid discharge.

2. The intelligent online precise metering system for coal-water separation according to claim 1 is characterized in that: The coal-water supply unit includes a coal-water storage tank and a supply pump. The supply pump is installed on one side of the coal-water storage tank and is connected to the metering control unit.

3. The intelligent online precise metering system for coal-water separation according to claim 1 is characterized in that: The continuous weighing device includes a platform plate, a transverse driving mechanism, a belt conveyor, a weighing frame and a baffle. The platform plate is installed in the separation bin below the filter along the transverse sliding path and is connected to the transverse driving mechanism. Two belt conveyors are arranged transversely on the upper edge of the platform plate. Both belt conveyors are installed on the platform plate through the weighing frame, and the belt conveyor and the weighing frame are connected to the metering control system unit. The baffle is fixedly installed in the separation bin on the discharge side of the belt conveyor. The metering control unit controls the platform plate through the transverse driving mechanism to drive the two belt conveyors to slide transversely and alternately dock the filter discharge end, and the conveying channel discharge end of the belt conveyor docked with the filter will be blocked by the baffle.

4. The intelligent online precise metering system for coal-water separation according to claim 3 is characterized in that: The metering control unit includes an online data processor and a controller. The online data processor is connected to the flow sensor, the slag-water weighing frame and the weighing frame of each layer of continuous weighing device to obtain real-time metering data; the controller is controlled and connected with the coal-water supply unit, the slag discharge valve, the transverse drive mechanism of each layer of continuous weighing device and the belt conveyor.

5. The intelligent online precise metering system for coal-water separation according to claim 3 is characterized in that: The weighing frame includes multiple weighing support columns installed on the platform plate below the belt conveyor. The weighing support columns include support rods, guide sleeves and weighing sensors. The guide sleeves are fixedly installed on the platform plate. The weighing sensors are installed in the guide sleeves and connected to the metering control unit. The support rods are installed in the guide sleeves above the weighing sensors along the vertical sliding direction, and the bottom ends of the support rods are in contact with the weighing sensors. The top ends of the support rods extend upward out of the guide sleeves and are fixedly connected to the frame of the belt conveyor.

6. The intelligent online precise metering system for coal-water separation according to claim 3 is characterized in that: The belt conveyor is symmetrically provided with skirt plates on both sides, and the conveying channel of the belt conveyor is formed between the two skirt plates. The end faces of the skirt plates for discharging materials of the belt conveyor are flush with the end faces of the baffle plates for blocking materials.

7. The intelligent online precise metering system for coal-water separation according to claim 3 is characterized in that: The conveyor belt of the belt conveyor is provided with drainage holes penetrating the belt body, and the aperture of the drainage holes is smaller than the size of the filter holes on the filter screen at the same layer.

8. The intelligent online precise metering system for coal-water separation according to claim 1 is characterized in that: A shelf is provided on one side of the platform plate between the two belt conveyors and close to the filter screen.

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