Double-bunker intercommunication coal conveying mechanism for raw coal bunker

Abstract

The utility model provides a double-bunker intercommunication coal conveying mechanism for a raw coal bunker, which solves the problems of complex operation and low working efficiency when a coal feeding system of a coal-fired unit switches coal types. The coal conveying mechanism comprises flow guide plate assemblies, a supporting frame, a driving mechanism and a conveying assembly, the flow guide plate assemblies are fixed to the two opposite ends of the supporting frame respectively, the flow guide plate assembly at one end of the supporting frame extends into a discharging hopper of one raw coal bunker, and the flow guide plate assembly at the other end of the supporting frame extends into a discharging hopper of the other raw coal bunker. And the driving mechanism is used for guiding the coal to the conveying assembly, the driving mechanism is in transmission connection with the conveying assembly, and under driving of the driving mechanism, the conveying assembly is arranged on the supporting frame and located between the two raw coal bins in a reciprocating motion mode, so that conveying of the coal between the different raw coal bins is achieved. Each raw coal bunker can convey different types of coals to the boiler, and when the unit adjusts the load and switches the coal types, the coals do not need to be fed again after the raw coal bunker finishes blanking, so that the working efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of coal feeding equipment technology, and in particular to a dual-compartment interconnected coal conveying mechanism for raw coal bunkers. Background Technology

[0002] In the existing technology, coal is stored in raw coal bunkers. Each raw coal bunker has a coal feeder installed below its hopper. When the gate at the raw coal bunker's hopper is opened, coal can be fed into the coal feeder for transportation and use.

[0003] The applicant has discovered at least the following technical problems with the existing technology: The unit requires different types of coal under different load conditions. When switching between coal types with different calorific values ​​is necessary, the unit can only wait until the original coal in the raw coal bunker is depleted before refueling, which cannot meet the unit's rapid load change requirements. Therefore, the quality of the coal fed into the boiler is limited, and the boiler's peak load capacity and ability to process low-quality coal are both weak. Alternatively, additional coal transfer equipment is required, but this is complex in structure, cumbersome in operation, and affects the timely supply of coal to the boiler. Utility Model Content

[0004] The purpose of this utility model is to provide a dual-compartment interconnected coal conveying mechanism for raw coal bunkers, so as to solve the technical problems of complex operation and low work efficiency when switching coal types in existing coal conveying systems. The various technical effects of the preferred technical solution among the many technical solutions provided by this utility model are described in detail below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The raw coal bunker dual-bunker interconnected coal conveying mechanism provided by this utility model includes a guide plate assembly, a support frame, a drive mechanism, and a conveying assembly, wherein:

[0007] The guide vane assemblies are respectively fixed to opposite ends of the support frame. The guide vane assembly at one end of the support frame extends into the hopper of one raw coal bunker, and the guide vane assembly at the other end of the support frame extends into the hopper of another raw coal bunker, for guiding coal onto the conveying assembly.

[0008] The drive mechanism is connected to the conveying assembly. Driven by the drive mechanism, the conveying assembly is positioned on the support frame and can reciprocate between the two raw coal bunkers, thereby realizing the transfer of coal between different raw coal bunkers.

[0009] Preferably, the conveying assembly is provided with a sealing cover, and the sealing cover is fixedly connected to the support frame;

[0010] The conveying assembly includes a conveyor belt and a skirt plate, wherein: the driving mechanism is drivenly connected to the conveyor belt, and the conveyor belt is movably positioned on the support frame;

[0011] The skirt plate is fixed to the opposite sides of the conveyor belt. The skirt plate is a curved plate structure or a bent plate structure, which is used to help increase the material accumulation of the conveyor belt.

[0012] Preferably, the dual-compartment interconnected coal conveying mechanism of the raw coal bunker further includes a gate valve, which is fixed on the raw coal bunker hopper. The gate valve includes two inclined gates that can be opened and closed to control the coal flow.

[0013] Preferably, the dual-compartment interconnected coal conveying mechanism of the raw coal bunker further includes a scraper assembly, which is located at opposite ends of the support frame. The scraper assembly includes a scraper shell and a scraper body, wherein:

[0014] There are at least two scraper shells, which are respectively fixed to opposite sides of the bottom of the support frame. The scraper body is fixedly connected between the two scraper shells and is used to scrape the coal on the conveyor belt.

[0015] The scraper shell has open ends at opposite ends, and the skirt plate located at the bottom of the support frame passes through the scraper shell. The scraper shell is used to scrape the coal off the skirt plate.

[0016] Preferably, the guide plate assembly includes two guide plate bodies, which are fixed to opposite sides of the support frame. The feed end of the conveying assembly is located between the two guide plate bodies. A pointed cone is provided on the side of each guide plate body. Along the thickness direction of the guide plate body, the height of the pointed cone gradually decreases from the middle to both sides of the guide plate body.

[0017] The guide plate assembly also includes a compartmentalized guide baffle, which is fixed to the inner wall of the raw coal bunker hopper and arranged vertically to divide the hopper into two parts of different sizes.

[0018] The guide plate assembly also includes a reinforcing rib, one end of which is fixed to the guide plate body and the other end of which is fixed to the compartment guide plate.

[0019] Preferably, the drive mechanism includes a drive unit, a driving sprocket, a driven sprocket, and a roller located within the support frame and rotatably connected to the support frame, wherein:

[0020] There are two rollers located at both ends of the support frame, and the conveying assembly is wound around the two rollers;

[0021] The roller has a clearance groove in the middle, the driven sprocket is fixed in the clearance groove and is arranged coaxially with the roller, the drive device is fixed on the support frame, the drive device is driven connected to the drive sprocket, and the drive sprocket and the driven sprocket are driven by a chain, thereby driving the roller to rotate.

[0022] Preferably, the drive mechanism is located at opposite ends of the support frame, and the raw coal bunker dual-compartment interconnected coal conveying mechanism further includes a tensioning device, which includes a hand crank, a worm gear, and a tensioning wheel, wherein:

[0023] The hand crank is rotatably connected to the side wall of the support frame, and a hand crank wheel is fixed to one end of the hand crank outside the support frame. A worm gear is fixed on the hand crank, and the worm gear meshes with the worm for transmission. The tension wheel is rotatably connected to one end of the worm and abuts against the surface of the roller.

[0024] Preferably, a guide groove is provided on the side wall of the support frame. The guide groove is arranged along the length direction of the conveying assembly. When the hand crank is rotated, the rotating shaft of the roller moves within the guide groove along the length direction of the guide groove.

[0025] Preferably, the dual-compartment interconnected coal conveying mechanism of the raw coal bunker further includes idler rollers, wherein:

[0026] The idler roller is located inside the support frame and is rotatably connected to the side wall of the support frame. The idler roller supports the conveying assembly and is arranged at intervals along the length of the support frame.

[0027] Preferably, the dual-compartment interconnected coal conveying mechanism of the raw coal bunker further includes a weighing sensor, a speed measuring wheel, and a control unit, wherein:

[0028] The weighing sensor is floatingly connected to the idler roller and is used to detect the weight of the coal to be weighed on the conveying assembly.

[0029] The speed measuring wheel is used to detect the moving speed of the conveying assembly. The control unit is electrically connected to the weighing sensor and the speed measuring wheel, and is used to calculate the coal conveying flow rate of the conveying assembly based on the speed of the conveying assembly and the weight of the coal to be weighed.

[0030] Preferably, the dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes a protective shell, which is located inside the raw coal bunker. The protective shell is equipped with a level gauge and a camera device, and only the lower part of the protective shell is open.

[0031] The dual-compartment interconnected coal conveying mechanism for raw coal bunkers provided by this utility model has the following advantages compared with the prior art: one raw coal bunker stores high-calorific-value coal, and the other stores low-calorific-value coal. When the gate valve of the first raw coal bunker is open and the gate valve of the second raw coal bunker is closed, the drive mechanism drives the conveying component to move, conveying the coal in the first raw coal bunker to the second raw coal bunker, where it falls into the corresponding coal feeder below the second raw coal bunker. Conversely, when the gate valve of the first raw coal bunker is closed and the gate valve of the second raw coal bunker is open, the drive mechanism drives the conveying component to move, conveying the coal in the second raw coal bunker to the first raw coal bunker, where it falls into the corresponding coal feeder below the first raw coal bunker. With this configuration, each raw coal bunker can convey different types of coal to the coal feeder below, eliminating the need to wait for the original coal type in the raw coal bunker to be unloaded and refilled when switching coal types. This results in high working efficiency, low modification costs, convenient later maintenance, and no risk of coal blockage. It also allows power plants to more flexibly adjust the use of coal types according to market demand and fuel supply. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the overall coordination between the dual-compartment interconnected coal conveying mechanism and the two raw coal compartments;

[0034] Figure 2 It is a cross-sectional view of the coal conveying mechanism between the two raw coal bunkers and the two raw coal bunkers.

[0035] Figure 3 This is a three-dimensional structural diagram of the coal conveying mechanism with interconnection between the two coal bunkers.

[0036] Figure 4 This is a side view of the coal conveying mechanism connecting the two bunkers of the raw coal storage area;

[0037] Figure 5 This is a cross-sectional view of the coal conveying mechanism between the two bunkers of the raw coal storage area;

[0038] Figure 6 This is a schematic diagram of the drive mechanism;

[0039] Figure 7 This is a top view of the drive mechanism.

[0040] In the diagram: 100, coal conveying mechanism; 200, raw coal bunker; 300, gate valve; 1, guide plate assembly; 11, guide plate body; 12, reinforcing rib plate; 13, compartment guide plate; 2, support frame; 21, idler roller; 22, guide trough; 3, drive mechanism; 31, drive device; 32, drive sprocket; 33, driven sprocket; 34, drum; 341, clearance trough; 4, conveying assembly; 41, conveyor belt; 42, skirt plate; 5, sealing cover; 6, scraper assembly; 61, scraper shell; 62, scraper body; 71, hand crank; 72, worm gear; 73, tension wheel; 74, hand crank wheel; 8, load cell; 9, protective shell; 91, level gauge; 92, camera. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In existing technology, coal is stored in raw coal bunkers, each with a coal feeder located below its hopper. When the gate at the hopper opens, coal is fed into the feeder for transport. However, different types of coal are required under varying load conditions. When switching between coals with different calorific values, the original coal in the bunker must be depleted before new coal is added, failing to meet the unit's rapid load change requirements. Therefore, the quality of the coal fed into the boiler is limited, resulting in weak peak-load capacity and limited ability to handle low-quality coal. Alternatively, additional coal transfer equipment can be used, but this is complex, cumbersome to operate, and hinders timely coal supply to the boiler.

[0044] This utility model embodiment provides a dual-compartment interconnected coal conveying mechanism 100 for raw coal bunkers. Each raw coal bunker 200 can convey different types of coal to the coal feeder below. There is no need to wait for the original coal type in the raw coal bunker 200 to be unloaded and refilled when switching coal types. It has high working efficiency, low modification cost, convenient maintenance in the later stage, and does not increase any risk of coal blockage. It allows power plants to adjust the use of coal types more flexibly according to market demand and fuel supply.

[0045] The following combination Figures 1-7 The technical solution provided by this utility model will be described in more detail.

[0046] Example 1:

[0047] See Figures 1-7 As shown, the raw coal bunker dual-bunker interconnected coal conveying mechanism 100 provided by this utility model includes a guide plate assembly 1, a support frame 2, a drive mechanism 3, and a conveying assembly 4. The guide plate assembly 1 is fixed to opposite ends of the support frame 2. The guide plate assembly 1 at one end of the support frame 2 extends into the hopper of one raw coal bunker 200, and the guide plate assembly 1 at the other end of the support frame 2 extends into the hopper of the other raw coal bunker 200, for guiding coal to the conveying assembly 4. The drive mechanism 3 is connected to the conveying assembly 4. Under the drive of the drive mechanism 3, the conveying assembly 4 is reciprocally movable on the support frame 2 between the two raw coal bunkers 200, thereby realizing the conveying of coal between different raw coal bunkers 200.

[0048] The support frame 2 can be made of channel steel, and the channel steel structure is three-sectioned. The installation height of the coal conveying mechanism 100 is 1500mm from the inner diameter of the raw coal bunker 200, and the length of the guide plate inserted into the raw coal bunker 200 is 750mm (not limited to this size).

[0049] See Figure 1 and Figure 2As shown, this embodiment has at least two raw coal bunkers 200. One of the two raw coal bunkers 200 stores high-calorific-value coal, and the other stores low-calorific-value coal. When the gate valve 300 of the first raw coal bunker 200 (which can be referred to as the left raw coal bunker 200) is opened and the gate valve 300 of the second raw coal bunker 200 (which can be referred to as the right raw coal bunker 200) is closed, the drive mechanism 3 drives the conveying assembly 4 to move, conveying the coal in the first raw coal bunker 200 to the second raw coal bunker 200, where it falls below the second raw coal bunker 200. Conversely, when the gate valve 300 of the first raw coal bunker 200 is closed and the gate valve 300 of the second raw coal bunker 200 is opened, the drive mechanism 3 drives the conveying assembly 4 to move, conveying the coal in the second raw coal bunker 200 to the first raw coal bunker 200, where it falls into the corresponding coal feeder below the first raw coal bunker 200. With this setup, each coal feeder can receive different types of coal from the two raw coal bunkers 200 without having to wait for the original type of coal in the raw coal bunker 200 to finish feeding when switching coal types.

[0050] As an optional implementation, see Figure 3 and Figure 4 As shown, the outer cover of the conveying component 4 is equipped with a sealing cover 5, which is fixedly connected to the support frame 2. The sealing cover 5 can prevent coal ash from entering the external environment and polluting the environment, and can also prevent dust and other impurities in the external environment from polluting the coal.

[0051] See Figure 3 As shown, the conveying assembly 4 includes a conveyor belt 41 and a skirt plate 42, wherein: the drive mechanism 3 is drivenly connected to the conveyor belt 41, and the conveyor belt 41 is movably mounted on the support frame 2; the skirt plate 42 is fixed on opposite sides of the conveyor belt 41, and the skirt plate 42 is a curved panel structure or a bent plate structure, used to help increase the material accumulation of the conveyor belt 41.

[0052] The height of the skirt plate 42 is greater than 150mm, and the width of the skirt plate 42 is less than the width of the guide plate body 11. The gate valve 300 is located at the position of 2000mm inner diameter of the raw coal bunker 200, and the coal flow area at the gate valve 300 is twice that before the modification.

[0053] The conveyor belt 41 can be a soft belt such as a belt conveyor. The conveyor belt 41 moves back and forth between two raw coal bunkers 200. Coal is placed on the conveyor belt 41, which enables the movement of different types of coal between the two raw coal bunkers 200. The above-mentioned structure of the skirt plate 42 can prevent coal from falling during the movement of the conveyor belt 41 and can increase the coal conveying capacity of the conveyor belt 41.

[0054] As an optional implementation, see Figure 3 As shown, the raw coal bunker double-bunker interconnected coal conveying mechanism 100 also includes a scraper assembly 6, which is located at opposite ends of the support frame 2 and is used to scrape the coal off the conveyor belt 41 and the skirt plate 42.

[0055] For details, see Figure 3 As shown, the scraper assembly 6 includes a scraper shell 61 and a scraper body 62, wherein: there are at least two scraper shells 61, which are respectively fixed to opposite sides of the bottom of the support frame 2, and the scraper body 62 is fixedly connected between the two scraper shells 61 for scraping coal off the conveyor belt 41; the opposite ends of the scraper shells 61 are open, and the skirt plate 42 located at the bottom of the support frame 2 passes through the scraper shells 61, and the scraper shells 61 are used to scrape coal off the skirt plate 42.

[0056] Among them, see Figure 3 As shown, the scraper shell 61 is fixed to the support frame 2 or to the sealing cover 5. The two ends of the scraper shell 61 are open to allow the skirt plate 42 to pass through. The cross section of the scraper shell 61 is U-shaped. The inner wall of the scraper shell 61 scrapes the coal on the skirt plate 42 without affecting the movement of the skirt plate 42.

[0057] The scraper is arranged along the width direction of the conveyor belt 41, such as... Figure 3 As shown, the scraper can scrape off the coal on the conveyor belt 41 that moves to the lower part of the support frame 2.

[0058] The scraper assembly 6 does not affect the movement of the conveying assembly 4, and can simultaneously scrape the coal on the conveyor belt 41 and the skirt plate 42 to prevent coal loss and accumulation on the conveying assembly 4.

[0059] The dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes a gate valve 300, which is fixed to the raw coal bunker's unloading hopper. The gate valve 300 includes two inclined gates, which can be opened and closed separately to control the coal flow. It can be opened by a drive cylinder.

[0060] As an optional implementation, see Figure 3 and Figure 4 As shown, the guide plate assembly 1 includes two guide plate bodies 11. The guide plate bodies 11 are fixed on opposite sides of the support frame 2. The feed end of the conveying assembly 4 is located between the two guide plate bodies 11. The sides of the guide plate bodies 11 are provided with pointed cones. Along the thickness direction of the guide plate bodies 11, the height of the pointed cones gradually decreases from the middle to the sides of the guide plate bodies 11.

[0061] The baffle assembly also includes a compartment baffle 13, which is fixed to the inner wall of the raw coal bunker 200 hopper and arranged vertically to divide the hopper into two parts of different sizes. The baffle assembly also includes a reinforcing rib 12, one end of which is fixed to the baffle body 11 and the other end of which is fixed to the compartment baffle 13.

[0062] With the above-described structure of the guide plate, when the gate of the raw coal bunker 200 is opened, the coal falling from the raw coal bunker 200 can be moved to the conveying assembly 4 between the two guide plate bodies 11 under the guidance of the pointed cone. That is, the coal falls into the feed end of the conveying assembly 4 and is conveyed by the conveying assembly 4 to prevent the coal from deviating from the target position.

[0063] The side wall of the raw coal bunker 200 has openings to allow the guide plate body 11 to extend into the interior of the raw coal bunker 200. The above structure improves the stable cooperation between the guide plate assembly 1 and the raw coal bunker 200.

[0064] The combined structure of the partition baffle 13 and the gate valve 300 divides the raw coal hopper 200 into left and right sections, facilitating separate maintenance. Maintenance on the conveyor belt side does not affect coal feeding on the other side. The coordination between the baffle and the upper gate valve allows for precise control of the coal feed rate and blending. (See also...) Figure 2 As shown, when the gate valve 300 is opened, a portion of the coal falls from the compartment guide baffle 13 into the coal feeder directly below, and another portion of the coal is conveyed to the coal feeder on the other side through the conveying assembly 4.

[0065] As an optional implementation, see Figure 5-Figure 7 As shown, the drive mechanism 3 in this embodiment includes a drive device 31, a drive sprocket 32 ​​located inside the support frame 2 and rotatably connected to the support frame 2, a driven sprocket 33, and a roller 34. Two rollers 34 are located at opposite ends of the support frame 2, and the conveying assembly 4 is wound around the two rollers 34. A clearance groove 341 is provided in the middle of the roller 34. The driven sprocket 33 is fixed in the clearance groove 341 and coaxially arranged with the roller 34. The drive device 31 is fixed to the support frame 2 and is drivenly connected to the drive sprocket 32. The drive sprocket 32 ​​and the driven sprocket 33 are driven by a chain, thereby driving the roller 34 to rotate.

[0066] The drive unit 31 is located outside the raw coal bunker 200. The speed of the drive unit 31 is matched with the speed of the coal feeder. The coal conveying capacity of the conveying component 4 meets the maximum output of the coal mill.

[0067] The aforementioned drive device 31 can be a variable frequency motor. The drive device 31 drives the drive sprocket 32 ​​to rotate, and the drive sprocket 32 ​​drives the driven sprocket 33 to rotate via a chain. Since the driven sprocket 33 is fixed in the relief groove 341 of the roller 34, the roller 34 can rotate, thereby driving the conveyor belt 41 to move using friction. The driven sprocket 33 being fixed in the relief groove 341 does not affect the conveyor belt 41 adhering to the surface of the roller 34, while still enabling the drive device 31 to drive the rotation of the roller 34.

[0068] To prevent slippage or misalignment of conveyor belt 41, please refer to... Figure 2 and Figure 5As shown, the drive mechanism 3 in this embodiment is located at opposite ends of the support frame 2.

[0069] As an optional implementation, see Figure 4 and Figure 7 As shown, the coal conveying mechanism 100 of the dual-compartment coal bunker also includes a tensioning device, which includes a hand crank 71, a worm gear 72 and a tensioning wheel 73. The hand crank 71 is rotatably connected to the side wall of the support frame 2, and a hand crank wheel 74 is fixed at one end of the hand crank 71 outside the support frame 2. A worm gear is fixed on the hand crank 71 and meshes with the worm gear 72 for transmission. The tensioning wheel 73 is rotatably connected to one end of the worm gear 72 and abuts against the surface of the drum 34.

[0070] See Figure 4 As shown, a guide groove 22 is provided on the side wall of the support frame 2. The guide groove 22 is arranged along the length direction of the conveying assembly 4. When the hand crank 74 is rotated, the rotating shaft of the roller 34 is located in the guide groove 22 and moves along the length direction of the guide groove 22.

[0071] When the hand crank 74 is turned, the hand crank 74 drives the hand crank 71 to rotate clockwise. The worm gear (not shown in the figure) on the hand crank 71 drives the worm 72 and the tensioning wheel 733 to move synchronously, pushing the roller 34 outward along the direction of the guide groove 22, so that the conveyor belt 41 is tensioned.

[0072] As an optional implementation, see Figure 5 As shown, the dual-compartment interconnected coal conveying mechanism 100 of the raw coal bunker also includes idler rollers 21, wherein: the idler rollers 21 are located inside the support frame 2 and are rotatably connected to the side wall of the support frame 2, the idler rollers 21 support the conveying assembly 4, and the idler rollers 21 are arranged at intervals along the length direction of the support frame 2.

[0073] The idler roller 21 serves to support the upper conveyor belt 41. When coal is placed on the conveyor belt 41, the idler roller 21 supports the conveyor belt 41, which can prevent the conveyor belt 41 from collapsing and ensure the stable movement of the conveyor belt 41.

[0074] As an optional implementation, see Figure 4 As shown, the dual-compartment interconnected coal conveying mechanism 100 of the raw coal bunker also includes a weighing sensor 8, a speed measuring wheel, and a control unit. The weighing sensor 8 is floatingly connected to the idler roller 21 and is used to detect the weight of the coal to be weighed on the conveying assembly 4. The speed measuring wheel is used to detect the moving speed of the conveying assembly 4. The control unit is electrically connected to the weighing sensor 8 and the speed measuring wheel and is used to calculate the coal conveying flow rate of the conveying assembly 4 based on the speed of the conveying assembly 4 and the weight of the coal to be weighed.

[0075] The load cell 8 and the speed measuring wheel are existing mature technologies, and their structures will not be described in detail here. The speed measuring wheel can be placed on the bearing of the idler roller 21, and the load cell 8 can be mounted on the bearing of another idler roller 21 by means of a nut.

[0076] As an optional implementation, see Figure 2 As shown, the dual-compartment interconnected coal conveying mechanism 100 of the raw coal bunker also includes a protective shell 9, which is located inside the raw coal bunker 200. A level gauge 91 and a camera device are installed inside the protective shell 9, and the protective shell 9 is only open at the bottom. The camera device can be a conventional camera 92.

[0077] The protective shell 9 has a handhole on the side connecting to the raw coal bunker 200. The bottom of the protective shell 9 is open, while the top and the other three sides are closed. The level gauge 91 and camera 92 inside the protective shell 9 can be installed and maintained through the handhole. The level gauge 91 detects the coal level at the coal inlet below the protective shell 9 in real time and is linked to the drive mechanism 3 in the control system, adjusting the speed of the drive device 31 according to the coal level. The bottom opening of the protective shell 9 extends downward to prevent coal from accumulating upward and affecting the operation of the level gauge 91 and camera 92.

[0078] The dual-compartment interconnected coal conveying mechanism 100 of this embodiment has the following advantages: without changing the original coal conveying system, simply by raising the position of the gate valve 300 and adding the coal conveying mechanism 100, the coal quality can be interconnected between the two raw coal compartments 200, allowing for rapid change of coal type. One compartment contains high-calorific-value coal, and the other contains low-calorific-value coal. The two compartments interconnect and convey coal in real time, simultaneously providing the coal feeder with a coal type adapted to the load.

[0079] The dual-compartment interconnected coal conveying mechanism of the raw coal bunker has a low modification cost, is easy to maintain in the later stage, and will not increase any risk of coal blockage. It allows the power plant to adjust the use of coal type more flexibly according to market demand and fuel supply, make more effective use of coal resources, and improve the flexibility, economy, safety and stability of unit operation.

[0080] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A dual-compartment interconnected coal conveying mechanism for raw coal bunkers, characterized in that, Includes a deflector assembly, a support frame, a drive mechanism, and a conveying assembly, wherein: The guide plate assemblies are respectively fixed to opposite ends of the support frame. The guide plate assembly at one end of the support frame extends into the hopper of a raw coal bunker, and the guide plate assembly at the other end of the support frame extends into the hopper of another raw coal bunker, for guiding coal onto the conveying assembly. The drive mechanism is connected to the conveying assembly. Driven by the drive mechanism, the conveying assembly is positioned on the support frame and can reciprocate between the two raw coal bunkers, thereby realizing the transfer of coal between different raw coal bunkers. The conveying assembly is covered with a sealing cover, which is fixedly connected to the support frame. The conveying assembly includes a conveyor belt and a skirt plate, wherein: the driving mechanism is drivenly connected to the conveyor belt, and the conveyor belt is movably positioned on the support frame; The skirt plate is fixed to the opposite sides of the conveyor belt. The skirt plate is a curved plate structure or a bent plate structure, which is used to help increase the material accumulation of the conveyor belt.

2. The raw coal bunker dual-bunker interconnected coal conveying mechanism according to claim 1, characterized in that, The dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes a gate valve, which is fixed on the raw coal bunker hopper. The gate valve includes two inclined gates that can be opened and closed to control the coal flow.

3. The raw coal bunker dual-bunker interconnected coal conveying mechanism according to claim 1, characterized in that, The dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes a scraper assembly, which is located at opposite ends of the support frame. The scraper assembly includes a scraper shell and a scraper body, wherein: There are at least two scraper shells, which are respectively fixed to opposite sides of the bottom of the support frame. The scraper body is fixedly connected between the two scraper shells and is used to scrape the coal on the conveyor belt. The scraper shell has open ends at opposite ends, and the skirt plate located at the bottom of the support frame passes through the scraper shell. The scraper shell is used to scrape the coal off the skirt plate.

4. The dual-compartment interconnected coal conveying mechanism for raw coal bunkers according to claim 1, characterized in that, The guide plate assembly includes two guide plate bodies, which are fixed to opposite sides of the support frame. The feed end of the conveying assembly is located between the two guide plate bodies. A pointed cone is provided on the side of each guide plate body. Along the thickness direction of the guide plate body, the height of the pointed cone gradually decreases from the middle to both sides of the guide plate body. The flow guide plate assembly also includes a compartmentalized flow guide baffle, which is fixed to the inner wall of the raw coal bunker hopper and arranged vertically to divide the hopper into two parts of different sizes. The guide plate assembly also includes a reinforcing rib, one end of which is fixed to the guide plate body and the other end of which is fixed to the compartment guide plate.

5. The dual-compartment interconnected coal conveying mechanism for raw coal bunkers according to claim 1, characterized in that, The drive mechanism includes a drive unit, a driving sprocket, a driven sprocket, and a roller located within the support frame and rotatably connected to the support frame, wherein: There are two rollers located at both ends of the support frame, and the conveying assembly is wound around the two rollers; The roller has a clearance groove in the middle, the driven sprocket is fixed in the clearance groove and is arranged coaxially with the roller, the drive device is fixed on the support frame, the drive device is driven connected to the drive sprocket, and the drive sprocket and the driven sprocket are driven by a chain, thereby driving the roller to rotate.

6. The dual-compartment interconnected coal conveying mechanism for raw coal bunkers according to claim 5, characterized in that, The drive mechanism is located at opposite ends of the support frame. The dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes a tensioning device, which includes a hand crank, a worm gear, and a tensioning wheel, wherein: The hand crank is rotatably connected to the side wall of the support frame, and a hand crank wheel is fixed to one end of the hand crank outside the support frame. A worm gear is fixed on the hand crank, and the worm gear meshes with the worm for transmission. The tension wheel is rotatably connected to one end of the worm and abuts against the surface of the roller.

7. The dual-compartment interconnected coal conveying mechanism for raw coal bunkers according to claim 6, characterized in that, The support frame has a guide groove on its side wall. The guide groove is arranged along the length of the conveying assembly. When the hand crank is rotated, the rotating shaft of the roller moves along the length of the guide groove within the guide groove.

8. The dual-compartment interconnected coal conveying mechanism for raw coal bunkers according to claim 1, characterized in that, The dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes idler rollers, wherein: The idler roller is located inside the support frame and is rotatably connected to the side wall of the support frame. The idler roller supports the conveying assembly and is arranged at intervals along the length of the support frame.

9. The dual-compartment interconnected coal conveying mechanism for raw coal bunkers according to claim 8, characterized in that, The dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes a weighing sensor, a speed measuring wheel, and a control unit, wherein: The weighing sensor is floatingly connected to the idler roller and is used to detect the weight of the coal to be weighed on the conveying assembly. The speed measuring wheel is used to detect the moving speed of the conveying assembly. The control unit is electrically connected to the weighing sensor and the speed measuring wheel, and is used to calculate the coal conveying flow rate of the conveying assembly based on the speed of the conveying assembly and the weight of the coal to be weighed. The dual-compartment interconnected coal conveying mechanism of the raw coal bunker also includes a protective shell, which is located inside the raw coal bunker. The protective shell is equipped with a level gauge and a camera device, and only the lower part of the protective shell is open.

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