Separated warehouse coal blending system

Abstract

The utility model relates to a separated coal blending system, which relates to the technical field of coal distribution and comprises a main coal blending bunker and an auxiliary coal blending bunker. The main coal distribution bunker comprises a main storage hopper, a first main guide hopper and a second main guide hopper. The first main guide hopper and the second main guide hopper are both installed at the bottom of the main storage hopper in a communicating mode. The auxiliary coal blending bin comprises an auxiliary storage hopper and an auxiliary guide hopper, and the auxiliary guide hopper is installed at the bottom of the auxiliary storage hopper in a communicating mode. The first main guide hopper and the second main guide hopper are both arranged at the bottom of the main storage hopper, so that the situation that lateral impact force borne by the first main guide hopper or the second main guide hopper is increased due to lateral movement of fire coal is avoided; the problem that the first main guide hopper or the second main guide hopper is prone to damage is avoided, meanwhile, the gravity center of the main coal distribution bunker can be more concentrated, and the technical effect of improving the overall safety coefficient of the main coal distribution bunker is achieved.

Description

Technical Field

[0001] This utility model relates to the field of coal distribution technology, specifically to a coal distribution system with compartments. Background Technology

[0002] To reduce the overall operating costs of coal-fired power plants, these plants need to blend various types of incoming coal before co-firing. By increasing the amount of low-quality coal blended in, the goal of reducing fuel procurement costs can be achieved. To achieve this, a distribution hopper is usually installed at an angle to the side of the original main hopper of the coal blender. This allows the coal blender to simultaneously output multiple streams of a certain type of coal, either directly conveying that type of coal to the coal-consuming equipment or mixing it with other types of coal before conveying it to the coal-consuming equipment.

[0003] However, the inclined installation of the distribution hopper results in the connection points being subjected to complex combined stresses. On the one hand, it must resist the torque generated by the inclination angle; on the other hand, the lateral impact force on the distribution hopper increases as coal from the main hopper enters it laterally. Over long-term operation, the connection points are highly susceptible to cracking and damage. This not only disrupts production but also increases the risk of safety accidents.

[0004] To address the aforementioned issues, this invention proposes a coal distribution system with a higher safety factor. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a coal distribution system that improves the safety factor of the coal distribution system by placing both the first and second main feed hoppers for coal distribution at the bottom of the main storage hopper.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] A coal distribution system comprising:

[0008] Main coal distribution bunker and auxiliary coal distribution bunker;

[0009] The main coal distribution bin includes a main storage hopper, a first main guide hopper, and a second main guide hopper, both of which are connected and installed at the bottom of the main storage hopper.

[0010] The auxiliary coal distribution bin includes an auxiliary storage hopper and an auxiliary guide hopper, with the auxiliary guide hopper connected and installed at the bottom of the auxiliary storage hopper;

[0011] The discharge port of the second main guide hopper is connected to the discharge port of the auxiliary guide hopper.

[0012] Preferably, the first main feed hopper is connected to the main storage hopper to form a first connection port, and the second main feed hopper is connected to the main storage hopper to form a second connection port, wherein the area of ​​the first connection port and the area of ​​the second connection port are not equal.

[0013] Preferably, it also includes a main coal blender, the inlet of which is connected to the outlet of the first main feed hopper, and the outlet of which is connected to the coal-using device.

[0014] Preferably, it further includes an intermediate conveying device, the inlet of which is connected to the outlet of the second main guide hopper, and the outlet of which is connected to the outlet of the auxiliary guide hopper.

[0015] Preferably, the intermediate conveying device is a belt conveyor, including a conveying pipe, a conveyor belt, and a drive device. The conveyor belt is disposed inside the conveying pipe, and the conveying direction of the conveyor belt is parallel to the conveying pipe. The drive end of the drive device is connected to the drive roller at the end of the conveyor belt, and the feed inlet of the intermediate conveying device corresponds to the conveyor belt.

[0016] Preferably, a baffle plate is provided in the conveying pipe. The baffle plate is installed above the conveyor belt and along the conveying direction of the conveyor belt. The baffle plate is located upstream of the feed inlet of the intermediate conveying device.

[0017] Preferably, the two ends of the conveying pipe are detachably fitted with cover plates.

[0018] Preferably, it also includes a secondary coal blender, wherein the first inlet of the secondary coal blender is connected to the outlet of the intermediate conveying device, the second inlet of the secondary coal blender is connected to the outlet of the secondary guide hopper, and the main outlet of the secondary coal blender is connected to the coal-using device.

[0019] Preferably, the auxiliary coal blender includes a housing, with the first feed inlet and the second feed inlet both located at the top of the housing, and the main discharge outlet located at the bottom of the housing. The first feed inlet and the main discharge outlet are vertically aligned. A coal passage gap for coal to pass through is provided inside the housing between the first feed inlet and the main discharge outlet, and the main discharge outlet is located downstream of the second feed inlet.

[0020] Preferably, on the side near the center of the main storage hopper, the angle formed by the top outer wall of the first main hopper and / or the second main hopper and the bottom outer wall of the main storage hopper is greater than or equal to 180°.

[0021] The present invention achieves the following technical advantages over the prior art:

[0022] In the coal distribution system disclosed in this utility model, both the first and second main hoppers are located at the bottom of the main storage hopper. Coal can directly enter the first and second main hoppers from top to bottom, preventing the lateral impact force on the first or second main hoppers from increasing due to the lateral movement of the coal. This avoids the problem of easy damage to the first or second main hoppers. At the same time, the location of the first and second main hoppers at the bottom of the main storage hopper makes the center of gravity of the main coal distribution hopper more concentrated, improving the stability of the main coal distribution hopper during operation and achieving the technical effect of improving the overall safety factor of the main coal distribution hopper. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments 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.

[0024] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A diagram from another perspective;

[0026] Figure 3 for Figure 1 A diagram from another perspective;

[0027] Figure 4 This is a schematic diagram of the intermediate conveying device in an embodiment of this utility model.

[0028] Figure 5 This is a schematic diagram of the auxiliary coal blender in an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of an embodiment of the present utility model.

[0030] The components include: 1. Main storage hopper; 2. First main guide hopper; 3. Second main guide hopper; 4. Auxiliary storage hopper; 5. Auxiliary guide hopper; 6. Main coal blender; 7. Intermediate conveying device; 8. Conveying pipeline; 9. Conveyor belt; 10. Drive device; 11. Baffle plate; 12. Cover plate; 13. Auxiliary coal blender; 14. Outer shell; 15. First feed inlet; 16. Second feed inlet; 17. Main discharge outlet; 18. Coal passage gap. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] The purpose of this utility model is to provide a coal distribution system that improves the overall safety factor of the main coal distribution silo by setting the first and second main feed hoppers at the bottom of the main storage hopper.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] refer to Figure 1-6The coal distribution system disclosed in this embodiment of the present invention includes: a main coal distribution bin and a secondary coal distribution bin; wherein, the main coal distribution bin includes a main storage hopper 1, a first main guide hopper 2 and a second main guide hopper 3, both of which are installed at the bottom of the main storage hopper 1 and are connected to the main storage hopper 1; the secondary coal distribution bin includes a secondary storage hopper 4 and a secondary guide hopper 5, the secondary guide hopper 5 being installed at the bottom of the secondary storage hopper 4 and connected to the secondary storage hopper 4; the discharge port of the second main guide hopper 3 is connected to the discharge port of the secondary guide hopper 5; it can be understood that the main storage hopper 1 and the secondary storage hopper 4 are used to hold different types of coal, the discharge port of the first main guide hopper 2 is connected to the coal-using device to form the main coal delivery route, and the discharge ports of the second main guide hopper 3 and the secondary guide hopper 5 are simultaneously connected to the coal-using device to form the secondary coal delivery route. Taking the main storage hopper 1 containing the first type of coal and the auxiliary storage hopper 4 containing the second type of coal as an example, during operation, the first main guide hopper 2 can directly transport the first type of coal in the main storage hopper 1 to the coal-using device for independent supply of the first type of coal. The first type of coal output from the outlet of the second main guide hopper 3 can be mixed with the second type of coal output from the outlet of the auxiliary guide hopper 5 and then enter the coal-using device together for mixed supply of the first and second types of coal. By placing the first main feed hopper 2 and the second main feed hopper 3 at the bottom of the main storage hopper 1, coal can directly enter the first main feed hopper 2 and the second main feed hopper 3 from top to bottom during the coal supply process. When coal enters the first main feed hopper 2 and the second main feed hopper 3 from the main storage hopper 1, there is no lateral displacement, meaning no additional lateral impact force is generated on the first main feed hopper 2 and the second main feed hopper 3 during this process. This avoids the problem of easy damage to the first main feed hopper 2 and the second main feed hopper 3, allowing them to be used stably for a long time and ensuring the continuity of coal supply. Furthermore, the impact force on the sidewalls of the first main feed hopper 2 and the second main feed hopper 3 at the same height when the coal falls is basically the same, ensuring the uniformity of force on the first main feed hopper 2 and the second main feed hopper 3. At the same time, the placement of the first main feed hopper 2 and the second main feed hopper 3 at the bottom of the main storage hopper 1 allows the center of gravity of the main coal blending silo to be concentrated near the axis of the main storage hopper 1, improving the stability during the main coal blending supply process and achieving the technical effect of improving the overall safety factor of the main coal blending silo.

[0035] It is understandable that: the first main feed hopper 2 is connected to the main storage hopper 1 to form the first connection port, and the second main feed hopper 3 is connected to the main storage hopper 1 to form the second connection port. That is, the position where the first main feed hopper 2 is connected to the main storage hopper 1 is the first connection port, and the position where the second main feed hopper 3 is connected to the main storage hopper 1 is the second connection port. The area of ​​the first connection port and the area of ​​the second connection port may be equal or unequal.

[0036] Preferably, the areas of the first connecting port and the second connecting port are not equal. Therefore, the speed at which coal enters the first main feeding hopper 2 and the second main feeding hopper 3 from the main storage hopper 1 is also not equal, thereby enabling the adjustment of the coal supply speed in the main storage hopper 1. As for which of the first and second connecting ports is larger, it can be adaptively adjusted according to actual production needs.

[0037] As a preferred embodiment, there are two auxiliary coal bunkers. The number of second main feed hoppers 3 matches the number of auxiliary coal bunkers. The discharge port of any second main feed hopper 3 is connected to the discharge port of an auxiliary feed hopper 5 of the auxiliary coal bunker, thereby forming multiple auxiliary coal delivery routes and realizing the one-time supply of multiple mixed types of coal.

[0038] It is understandable that the auxiliary coal bunker and the second main hopper 3 can be set in three, four, five, etc., as long as the above arrangement is met, they are all within the protection scope of this application.

[0039] Preferably, in the above embodiment there is one first connection port and two second connection ports. Depending on the actual production needs, the three connection ports can be set to the same size, or they can be set to one large and two small, one small and two large, or all three different sizes.

[0040] In a preferred embodiment, the coal distribution system also includes a main coal distributor 6. The inlet of the main coal distributor 6 is connected to the outlet of the first main feed hopper 2, and the outlet of the main coal distributor 6 is connected to the coal-consuming device. The main coal distributor 6 can change the direction of movement of the coal output from the first main feed hopper 2, making the coal delivery route more flexible and adaptable to more complex plant environments.

[0041] In a preferred embodiment, the coal blending system further includes an intermediate conveying device 7. The inlet of the intermediate conveying device 7 is connected to the outlet of the second main hopper 3, and the outlet of the intermediate conveying device 7 is connected to the outlet of the auxiliary guide hopper 5. The intermediate conveying device 7 can transport the coal output from the second main hopper 3 to the outlet of the auxiliary guide hopper 5 to complete the mixing of coal in the main and auxiliary coal blending bins.

[0042] In a preferred embodiment, the intermediate conveying device 7 is a belt conveyor, including a conveying pipe 8, a conveyor belt 9, and a drive device 10. The conveyor belt 9 is disposed inside the conveying pipe 8, and its conveying direction is parallel to the conveying pipe 8. The drive end of the drive device 10 is connected to the drive roller at the end of the conveyor belt 9. The feed inlet of the intermediate conveying device 7 corresponds to the conveyor belt 9. The coal entering the intermediate conveying device 7 can fall directly onto the conveyor belt 9. The drive device 10 drives the conveyor belt 9 to work, and the conveyor belt 9 drives the coal downstream through friction. When the coal moves downstream until it loses the support of the conveyor belt 9, it can be discharged directly from the discharge outlet of the intermediate conveying device 7. Some coal is sticky, and the conveyor belt 9 drives the coal through friction, without exerting pressure on the coal, thus avoiding the sticky coal from sticking together and causing blockages during the conveying process. The drive device 10 can be a drive motor, gear reducer, etc.

[0043] In a preferred embodiment, a baffle plate 11 is provided in the conveying pipe 8. The baffle plate 11 is installed above the conveyor belt 9 and along the conveying direction of the conveyor belt 9, the baffle plate 11 is located upstream of the feed inlet of the intermediate conveying device 7. Since coal has a certain elasticity, it is easy for it to bounce when it falls onto the conveyor belt 9. In order to ensure the normal operation of the conveyor belt 9, a certain gap needs to be maintained between the end of the conveyor belt 9 and the end of the conveying pipe 8. Therefore, coal may fall below the conveyor belt 9 through the gap between the ends of the conveyor belt 9 and the conveying pipe 8. The baffle plate 11 can prevent the coal falling from the feed inlet from bouncing towards the upstream side of the feed inlet, that is, the gap between the upstream end of the conveyor belt 9 and the upstream end of the conveying pipe 8, thereby avoiding the problem of coal accumulating and blocking the conveying pipe 8.

[0044] As a preferred embodiment, the cover plates 12 at both ends of the conveying pipe 8 are designed to be detachable. When the conveying pipe 8 is blocked, the cover plates 12 can be removed to clear the blockage.

[0045] Preferably, the cover plate 12 can be connected to the conveying pipe 8 by means of snap-fit, bolt connection, or sliding connection. Specifically, when the connection is made by snap-fit, a buckle is provided on the outer wall of the end of the conveying pipe 8, and a locking block matching the buckle is provided on the cover plate 12. When the connection is made by bolt, a connecting seat is provided on the outer wall of the end of the conveying pipe 8, and a connecting ear corresponding to the connecting seat is provided on the cover plate 12. Threaded holes are provided on the connecting seat and the connecting ear. When the connection is made by sliding connection, a groove matching the cover plate 12 is provided at the end of the conveying pipe 8.

[0046] In a preferred embodiment, the coal distribution system also includes a secondary coal distributor 13. The first inlet 15 of the secondary coal distributor 13 is connected to the outlet of the intermediate conveying device 7, the second inlet 16 of the secondary coal distributor 13 is connected to the outlet of the secondary guide hopper 5, and the total outlet 17 of the secondary coal distributor 13 is connected to the coal-consuming device. The coal output from the main coal distribution bin and the coal output from the secondary coal distribution bin can be pre-mixed at the secondary coal distributor 13 so that they can simultaneously enter the coal-consuming device. Simultaneously, the secondary coal distributor 13 can change the direction of movement of the coal output from the secondary guide hopper 5, making the coal delivery route more flexible and adaptable to more complex plant environments.

[0047] Preferably, the auxiliary coal blender 13 includes a housing 14, with a first feed inlet 15 and a second feed inlet 16 both located at the top of the housing 14, and a total discharge outlet 17 located at the bottom of the housing 14. The first feed inlet 15 and the total discharge outlet 17 are vertically aligned. A coal passage gap 18 is provided inside the housing 14 between the first feed inlet 15 and the total discharge outlet 17 for coal to pass through. The total discharge outlet 17 is located downstream of the second feed inlet 16. The coal entering the auxiliary coal blender 13 through the second feed inlet 16 gradually moves towards the total discharge outlet 17 and eventually passes through the coal passage gap 18 to fall at the total discharge outlet 17. The coal entering the auxiliary coal blender 13 through the first feed inlet 15 falls through the coal passage gap 18 to the total discharge outlet 17 under the influence of gravity. This arrangement effectively promotes the mixing of the two types of coal. After entering the coal passage gap 18, the two types of coal can mix with each other and enter the downstream coal-consuming device together.

[0048] In a preferred embodiment, the top outer wall of the first main feed hopper 2 and / or the second main feed hopper 3 intersects with the bottom outer wall of the main storage hopper 1 at a certain angle. On the side closer to the center of the main storage hopper 1, this angle is greater than or equal to 180°. That is, on the same side of the main storage hopper 1, the inclination of the bottom outer wall of the main storage hopper 1 is less than the inclination of the top outer wall of the first main feed hopper 2 and / or the second main feed hopper 3. No dead angle is created at the intersection of the first main feed hopper 2 and / or the second main feed hopper 3 and the main storage hopper 1. Coal entering the first main feed hopper 2 and / or the second main feed hopper 3 from the main storage hopper 1 will not experience frictional resistance from the side walls of the first main feed hopper 2 and / or the second main feed hopper 3, thus avoiding the problem of coal accumulation and blockage at the intersection. Here, the degree of inclination refers to the degree to which the angle between the target surface or target line and the horizontal plane is close to 90°.

[0049] In a preferred embodiment, both the main storage hopper 1 and the auxiliary storage hopper 4 are cylindrical structures, specifically cylindrical, conical, rectangular, square pyramidal, or irregularly shaped cylinders, or a combination thereof. When they are a combination of these, the cylindrical structures can be freely joined together in the vertical direction. Any cylindrical structure that can form a circumferentially sealed structure to hold the coal is acceptable.

[0050] Preferably, the main storage hopper 1 is composed of a cylindrical structure and a conical structure. The large-diameter end of the conical structure is connected to one end of the cylindrical structure, and the small-diameter end of the conical structure is connected to the first main hopper 2 and the second main hopper 3.

[0051] Furthermore, both the first main hopper 2 and the second main hopper 3 are funnel-shaped structures with gradually decreasing cross-sectional areas. The large-diameter ends of the first main hopper 2 and the second main hopper 3 are connected to the small-diameter ends of the conical cylindrical structure. It can be understood that the funnel-shaped structure in this utility model refers to a structure whose cross-sectional area gradually decreases from one end to the other along the vertical direction of the coal distribution system during operation. Its cross-section can be a regular circle or an irregular shape.

[0052] In a preferred embodiment, when a second main feed hopper 3 is provided, the end of the first main feed hopper 2 connected to the conical cylindrical structure is the first connecting end, and the end of the second main feed hopper 3 connected to the conical cylindrical structure is the second connecting end. Both the first and second connecting ends have semi-circular cross-sections. When the first and second connecting ends are joined together, they form a circular structure with the same cross-section as the small-diameter end of the conical cylindrical structure. The inclination of the sidewall of the conical cylindrical structure is less than the inclination of the sidewall of the first connecting end. The inclination of the sidewall of the conical cylindrical structure is less than that of the sidewall of the second connecting end. Therefore, the conical cylindrical structure will not form dead angles with the first connecting end or the second connecting end. This avoids dead angles at the transition positions between the main storage hopper 1 and the first main guide hopper 2, and between the main storage hopper 1 and the second main guide hopper 3. This allows the coal to move smoothly to the downstream device, avoiding the problem of coal accumulating and blocking the main storage hopper 1 at dead angle positions. Moreover, this configuration is simple in structure and the transition positions are easy to process, making the production of the coal distribution system simpler.

[0053] In a preferred embodiment, when two second main feed hoppers 3 are provided, the first main feed hopper 2 is located in the middle position below the main storage hopper 1, and the two second main feed hoppers 3 are respectively located on both sides of the first main feed hopper 2. The first main feed hopper 2 and the two second main feed hoppers 3 are all funnel-shaped structures. The transition positions between the first main feed hopper 2 and the main storage hopper 1, and the transition positions between the second main feed hopper 3 and the main storage hopper 1 are all connected without dead angles. This connection form can effectively avoid the problem of coal accumulation in the main storage hopper 1.

[0054] As a preferred embodiment, the main coal feeder 6, the auxiliary coal feeder 13, and the intermediate conveying device 7 can all be existing conveying devices such as scraper feeders, chain feeders, screw feeders, and belt feeders.

[0055] Preferably, the end plates at both ends of the main coal feeder 6 and the auxiliary coal feeder 13 are designed to be detachable in order to clean the coal inside the main coal feeder 6 and the auxiliary coal feeder 13.

[0056] In a preferred embodiment, the outlets of the first main guide hopper 2, the second main guide hopper 3, and the auxiliary guide hopper 5 are all equipped with shut-off valves for blocking the delivery of coal. Preferably, the shut-off valves are existing valve bodies such as gate valves, slide gate valves, or butterfly valves.

[0057] As a preferred embodiment, the discharge port of the main coal feeder 6, the total discharge port 17 of the auxiliary coal feeder 13, and the first feed port 15 are all equipped with shut-off valves.

[0058] In one preferred embodiment, the main storage hopper 1 contains first-type coal, and the second main storage hopper 4 contains second-type coal. The on / off state of the shut-off valves in the coal distribution system can be freely adjusted according to operational needs. Specifically, the shut-off valves at the outlets of the first main storage hopper 2 and the main coal distributor 6 can be opened, while the shut-off valves at the outlets of the second main storage hopper 3 and the auxiliary guide hopper 5 can be closed, meaning that first-type coal is supplied to the coal-consuming device only through the first main storage hopper 2. Alternatively, the shut-off valves at the outlets of the first and second main storage hoppers 2 and 3 can be closed, while the shut-off valves at the outlets of the auxiliary guide hopper 5 and the auxiliary coal distributor 13 can be opened. This means that the second type of coal is supplied to the coal-using device only through the secondary guide hopper 5; the shut-off valves at the discharge ports of the first main guide hopper 2 and the secondary guide hopper 5 can be closed, while the shut-off valves at the discharge ports of the second main guide hopper 3, the intermediate conveying device 7, and the secondary coal blender 13 can be opened, meaning that the first type of coal is supplied to the coal-using device only through the second main guide hopper 3; alternatively, the shut-off valve at the discharge port of the first main guide hopper 2 can be closed, while the shut-off valves at the discharge ports of the second main guide hopper 3, the intermediate conveying device 7, the secondary guide hopper 5, and the secondary coal blender 13 can be opened, meaning that the first and second types of coal are supplied to the coal-using device in a mixed manner.

[0059] Furthermore, by controlling the opening and closing of the valves, the above four coal supply methods can be freely switched. That is, by controlling the opening and closing of the valves, the coal type supplied by the coal distribution system can be quickly switched, achieving the technical effects of precise coal distribution and rapid coal type switching.

[0060] It is understood that the working states described in the above embodiments only specifically introduce the on / off states of some valves. In the actual supply process, when coal is supplied in any one or more of the above methods, other shut-off valves on the corresponding route can be opened or closed as needed.

[0061] In a preferred embodiment, the first main guide hopper 2, the second main guide hopper 3, and the auxiliary guide hopper 5 are all conical structures.

[0062] Preferably, the transport direction of the intermediate conveying device 7 is different from that of the auxiliary coal blender 13, and the intermediate conveying device 7 is located above the auxiliary coal blender 13, and the auxiliary coal blender 13 is located within the projection range of the main coal blending bunker in the vertical direction. This allows for effective utilization of the space below the main coal blending bunker, making the device more compact overall, and making the system design reasonable, simple in structure, and easier to modify later.

[0063] Preferably, the driving device 10 is a drive motor.

[0064] In a preferred embodiment, a material level detection device is installed inside the main storage hopper 1. The material level detection device can monitor the coal level in the main storage hopper 1. When the coal level is lower than the junction between the main storage hopper 1 and the first main guide hopper 2 or the junction between the main storage hopper 1 and the second main guide hopper 3, the material level detection device can transmit a signal to the alarm device to remind the staff to replenish the coal in the main storage hopper 1 in time, so as to avoid the problem of insufficient coal on one side of the first main guide hopper 2 and the second main guide hopper 3, which would cause the overall center of gravity of the device to shift.

[0065] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0066] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coal distribution system with compartments, characterized in that, include: Main coal distribution bunker and auxiliary coal distribution bunker; The main coal distribution bin includes a main storage hopper (1), a first main feed hopper (2), and a second main feed hopper (3). The first main feed hopper (2) and the second main feed hopper (3) are both connected and installed at the bottom of the main storage hopper (1). The auxiliary coal distribution bin includes an auxiliary storage hopper (4) and an auxiliary guide hopper (5), with the auxiliary guide hopper (5) connected to and installed at the bottom of the auxiliary storage hopper (4); The discharge port of the second main guide hopper (3) is connected to the discharge port of the auxiliary guide hopper (5); It also includes an intermediate conveying device (7), the inlet of which is connected to the outlet of the second main guide hopper (3), and the outlet of which is connected to the outlet of the auxiliary guide hopper (5). It also includes a secondary coal blender (13), the first feed port (15) of which is connected to the discharge port of the intermediate conveying device (7), the second feed port (16) of which is connected to the discharge port of the secondary guide hopper (5), and the total discharge port (17) of which is connected to the coal-using device. The auxiliary coal blender (13) includes a shell (14), the first feed port (15) and the second feed port (16) are both opened on the top of the shell (14), and the main discharge port (17) is opened on the bottom of the shell (14). The first feed port (15) and the main discharge port (17) are vertically corresponding. A coal passage gap (18) for coal to pass through is provided inside the shell (14) between the first feed port (15) and the main discharge port (17). The main discharge port (17) is located downstream of the second feed port (16).

2. The coal distribution system according to claim 1, characterized in that, The first main feed hopper (2) is connected to the main storage hopper (1) to form a first connection port, and the second main feed hopper (3) is connected to the main storage hopper (1) to form a second connection port. The area of ​​the first connection port is not equal to the area of ​​the second connection port.

3. The coal distribution system according to claim 1, characterized in that, It also includes a main coal feeder (6), the inlet of which is connected to the outlet of the first main feed hopper (2), and the outlet of which is connected to the coal-using device.

4. The coal distribution system according to claim 1, characterized in that, The intermediate conveying device (7) is a belt conveying device, including a conveying pipe (8), a conveyor belt (9) and a drive device (10). The conveyor belt (9) is located inside the conveying pipe (8). The conveying direction of the conveyor belt (9) is parallel to the conveying pipe (8). The drive end of the drive device (10) is connected to the drive roller at the end of the conveyor belt (9). The feed inlet of the intermediate conveying device (7) corresponds to the conveyor belt (9).

5. The coal distribution system according to claim 4, characterized in that, A baffle plate (11) is provided in the conveying pipe (8). The baffle plate (11) is installed above the conveyor belt (9) along the conveying direction of the conveyor belt (9). The baffle plate (11) is located upstream of the feed inlet of the intermediate conveying device (7).

6. The coal distribution system according to claim 4, characterized in that, The two ends of the conveying pipe (8) are detachably fitted with cover plates (12).

7. The coal distribution system according to claim 1, characterized in that, On the side near the center of the main storage hopper (1), the angle formed between the top outer wall of the first main hopper (2) and / or the second main hopper (3) and the bottom outer wall of the main storage hopper (1) is greater than or equal to 180°.

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