Distribution type accurate fire coal distribution system

Abstract

The utility model discloses a distribution type accurate fire coal distribution system which comprises three fire coal distribution devices, each fire coal distribution device comprises a coal bunker and a coal feeder, each coal feeder comprises a feeding port and a discharging port, and coal in the coal bunkers is input into the coal feeders through the feeding ports; the three fire coal distribution devices comprise a first fire coal distribution device, a second fire coal distribution device and a third fire coal distribution device; the fire coal distribution system comprises a fire coal distribution system which is arranged between a coal bunker of the first fire coal distribution device and coal feeders of the second fire coal distribution device and the third fire coal distribution device, and coal in the coal bunker of the first fire coal distribution device is conveyed to the coal feeders of the second fire coal distribution device and the third fire coal distribution device through the fire coal distribution system. The fire coal distribution system comprises a scraper type distribution coal feeder and a first distribution device, the scraper type distribution coal feeder comprises a first feeding port and two discharging ports connected with the coal feeders of the second fire coal distribution device and the third fire coal distribution device, the feeding end of the first distribution device is communicated with a coal bunker of the first fire coal distribution device, and the discharging end of the first distribution device is connected with the first feeding port.

Description

Technical Field

[0001] The utility model relates to the technical field of solid particle material distribution, in particular to a distribution type precise coal distribution system. Background Art

[0002] The conventional coal distribution system includes three coal distribution devices, each of which includes a coal bunker and a coal feeder arranged below the coal bunker. The coal bunker of one of the coal distribution devices is configured to supply coal to the coal feeders of two adjacent coal distribution devices in addition to supplying coal to its own coal feeder. To this end, a coal diversion system is provided between the one coal distribution device and the two adjacent coal distribution devices, that is, two coal diversion systems need to be provided, thereby realizing the diversion and distribution of coal from the coal bunker of one coal distribution device to the coal feeder of the adjacent coal distribution device.

[0003] However, the traditional coal distribution system requires two or more coal diversion systems, which results in a complex structure, high cost and large space occupation. Therefore, there is a demand in the industry for a low-cost and simple-structure coal distribution system. Utility Model Content

[0004] The utility model aims to overcome the defects of the traditional technology and aims to provide a distributed precise coal distribution system which can effectively reduce the cost and has a simple structure.

[0005] To achieve the above-mentioned purpose, according to the utility model, a distributed precise coal distribution system is provided, comprising at least three coal distribution devices, each of which comprises a coal bunker and a coal feeder arranged below the coal bunker;

[0006] The coal bunker comprises a coal bunker main body located at the upper part and a discharge hopper located at the lower part;

[0007] The coal feeder comprises a feed port and a discharge port, the coal from the coal bunker is input into the coal feeder through the feed port, and is transported by the coal feeder to the discharge port and discharged through the discharge port;

[0008] The at least three coal distribution devices include a first coal distribution device, a second coal distribution device and a third coal distribution device;

[0009] The coal distribution system further includes a coal diversion system, which is arranged between the coal bunker of the first coal distribution device and the coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device, and the coal in the coal bunker of the first coal distribution device can be transported to the coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device via the coal diversion system;

[0010] The coal diversion system includes a scraper-type diversion coal feeder extending along the arrangement direction of the at least three coal distribution devices and a first diversion device. The scraper-type diversion coal feeder includes a first feed port and two discharge ports. The feed end of the first diversion device is connected to the coal bunker of the first coal distribution device, and the discharge end of the first diversion device is connected to the first feed port; one of the two discharge ports is connected to the interior of the coal feeder of the second coal distribution device, and the other of the two discharge ports is connected to the interior of the coal feeder of the third coal distribution device.

[0011] Preferably, the first coal distribution device is arranged between the second coal distribution device and the third coal distribution device, the first feed port includes two first feed sub-ports spaced apart in the longitudinal direction, and the discharge end of the first diversion device includes two discharge ports respectively connected to the two first feed sub-ports; the scraper-type diversion coal feeder includes a coal material bearing surface located below and a carrier plate located above, the coal material on the coal material bearing surface is pushed by the lower scraper, and the coal material on the carrier plate is pushed by the upper scraper, and one longitudinal end of the carrier plate is located between the two first feed sub-ports, so that the two discharge ports are connected to the two first feed sub-ports. The coal coming out of one of the material ports passes through the gap between the upper scrapers and is scattered on the coal bearing surface and is pushed to one of the two discharge ports by the lower scraper, while the coal coming out of the other of the two discharge ports is scattered on the carrier plate; the other longitudinal end of the carrier plate is located above the other of the two discharge ports so that the coal leaving the carrier plate falls into the other of the two discharge ports, or the other longitudinal end of the carrier plate extends over the other of the two discharge ports so that the coal leaving the carrier plate falls onto the coal bearing surface and is pushed to the other of the two discharge ports by the lower scraper.

[0012] Preferably, the first flow diverter device comprises two sub-flow diverters, the feed end of each sub-flow diverter device is respectively connected to the coal bunker of the first coal distribution device, and the discharge end of each sub-flow diverter device is respectively connected to the two first feed outlets.

[0013] Preferably, the coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device include a diverter feed port, and the diverter feed port is arranged on the side of the feed port opposite to the discharge port, one of the two discharge ports is connected to the diverter feed port of the coal feeder of the second coal distribution device, and the other of the two discharge ports is connected to the diverter feed port of the coal feeder of the third coal distribution device.

[0014] Preferably, the coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device include a diverter feed port, which is arranged opposite to the discharge port, one of the two discharge ports is connected to the diverter feed port of the coal feeder of the second coal distribution device, and the other of the two discharge ports is connected to the diverter feed port of the coal feeder of the third coal distribution device.

[0015] Preferably, one of the two discharge ports is connected to the feed port of the coal feeder connected to the second coal distribution device and the channel of the corresponding coal bin via a bypass pipe, and the other of the two discharge ports is connected to the feed port of the coal feeder connected to the third coal distribution device and the channel of the corresponding coal bin via a bypass pipe.

[0016] Preferably, the coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet;

[0017] The feed end of the second flow dividing device is connected to the coal bunker of the second coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port;

[0018] The third discharge port is connected to the interior of the coal feeder of the first coal-fired distribution device, and the coal coming out of the discharge end of the second diversion device passes through the gap between the upper scrapers and is scattered on the coal bearing surface and is pushed toward the third discharge port by the lower scraper. A gate door is provided on the connecting passage between the third discharge port and the coal feeder of the first coal-fired distribution device.

[0019] Preferably, the coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet;

[0020] The feed end of the second flow dividing device is connected to the coal bunker of the second coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port;

[0021] The third discharge port is connected to the inside of the coal feeder of the first coal distribution device, and the coal coming out of the discharge end of the second diversion device passes through the gap between the upper scrapers and is scattered on the coal bearing surface and is pushed toward the third discharge port by the lower scraper; the chain of the scraper-type diversion coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the chain. When viewed along the travel direction of the chain, the coal bearing surface only forms an opening connected to the third discharge port in an area on one side of the chain.

[0022] Preferably, the coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet;

[0023] The feed end of the second flow dividing device is connected to the coal bunker of the third coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port;

[0024] The third discharge port is connected to the interior of the coal feeder of the first coal-fired distribution device, the loading plate is located below the second feed port and receives the coal entering from the second feed port, the longitudinal dimension of the loading plate is set so that the coal leaving the loading plate falls on the coal bearing surface and is pushed toward the third discharge port by the lower scraper, and a gate door is provided on the connecting passage between the third discharge port and the coal feeder of the first coal-fired distribution device.

[0025] Preferably, the coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet;

[0026] The feed end of the second flow dividing device is connected to the coal bunker of the third coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port;

[0027] The third discharge port is connected to the interior of the coal feeder of the first coal distribution device, the carrier plate is located below the second feed port and receives the coal entering from the second feed port, and the longitudinal dimension of the carrier plate is set so that the coal leaving the carrier plate falls on the coal bearing surface and is pushed toward the third discharge port by the lower scraper;

[0028] The chain of the scraper-type split-flow coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the scraper. Viewed along the travel direction of the chain, the coal-bearing surface forms an opening connected to the third discharge port only in one side area of ​​the chain.

[0029] Preferably, the first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device; the scraper-type diverter coal feeder includes a coal-bearing surface located below, and the coal on the coal-bearing surface is pushed by the lower scraper. The coal coming out of the discharge end of the first diverter device passes through the gap between the upper scrapers and is scattered on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports. A gate door is provided on the connecting passage between one of the two discharge ports and the coal feeder of the second coal distribution device.

[0030] Preferably, the first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device; the scraper-type diverter coal feeder includes a coal-bearing surface located below, and the coal on the coal-bearing surface is pushed by the lower scraper, and the coal coming out of the discharge end of the first diverter device passes through the gap between the upper scrapers and is scattered on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports; the chain of the scraper-type diverter coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the chain. Viewed along the travel direction of the chain, the coal-bearing surface only forms an opening connected to one of the two discharge ports in the area on one side of the chain.

[0031] Preferably, the first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device;

[0032] The scraper-type split-flow coal feeder comprises a coal-bearing surface located below and a carrier plate located above, the coal on the coal-bearing surface is pushed by the lower scraper, and the coal on the carrier plate is pushed by the upper scraper, the carrier plate is located below the first feed port and receives the coal entering from the first feed port, and the longitudinal dimension of the carrier plate is set so that the coal leaving the carrier plate falls on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports;

[0033] A gate door is provided on the communication passage between one of the two discharge ports and the coal feeder of the second coal distribution device.

[0034] Preferably, the first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device;

[0035] The scraper-type split-flow coal feeder comprises a coal-bearing surface located below and a carrier plate located above, the coal on the coal-bearing surface is pushed by the lower scraper, and the coal on the carrier plate is pushed by the upper scraper, the carrier plate is located below the feed port and receives the coal entering from the first feed port, and the longitudinal dimension of the carrier plate is set so that the coal leaving the carrier plate falls on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports;

[0036] The chain of the scraper-type split-flow coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the scraper. Viewed along the travel direction of the chain, the coal-bearing surface forms an opening connected to one of the two discharge ports only in an area on one side of the chain.

[0037] By adopting the technical solution of the utility model, only one set of coal diversion system is provided to realize the diversion and feeding of one coal distribution device to two adjacent coal distribution devices, which greatly simplifies the structure of the coal diversion system, reduces costs, and reduces floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Figure 1 is a perspective view illustrating the overall structure of a distribution-type precise coal distribution system according to a first embodiment of the utility model;

[0040] Figure 2 is a perspective view, illustrating the overall structure of the distributed precise coal distribution system according to the first embodiment of the utility model from another angle;

[0041] Figure 3 is a top view of a distribution-type precise coal distribution system according to a first embodiment of the utility model;

[0042] Figure 4 It is a front view of the distribution type precise coal distribution system according to the first embodiment of the utility model, wherein the scraper type split flow coal feeder is partially cut away to show its internal structure;

[0043] Figure 5 It is a right view of the distribution type precise coal distribution system according to the first embodiment of the utility model;

[0044] Figure 6 is a perspective view illustrating the overall structure of a distribution-type precise coal distribution system according to a second embodiment of the utility model;

[0045] Figure 7 is a perspective view, illustrating the overall structure of the distributed precise coal distribution system according to the second embodiment of the utility model from another angle;

[0046] Figure 8 It is a right side view of the distribution type accurate coal distribution system according to the second embodiment of the utility model;

[0047] Fig. 9 It is a front view of a distribution type precise coal distribution system according to a second embodiment of the utility model, wherein a scraper type split flow coal feeder is partially cut away to show its internal structure;

[0048] Fig.10 is a perspective view illustrating the overall structure of a distributed precise coal distribution system according to a third embodiment of the utility model;

[0049] Fig.11is a right side view of the distributed precise coal distribution system according to the third embodiment of the utility model; and

[0050] Fig.12 It is a front view of a distributed precise coal delivery system according to the third embodiment of the utility model, wherein a scraper-type split-flow coal feeder is partially cut away to show its internal structure. DETAILED DESCRIPTION

[0051] The following is a detailed description of the distributed precise coal distribution system of the present utility model in combination with the accompanying drawings and embodiments. It should be noted that the embodiments of the present utility model are merely illustrative and are only used to illustrate the principle of the present utility model rather than to limit the present utility model.

[0052] In the following description and other parts of this application, the longitudinal direction refers to the extending direction of the scraper-type split-flow coal feeder.

[0053] First embodiment

[0054] See first Figure 1 , which illustrates the overall structure of the distributed precise coal distribution system according to the first embodiment of the utility model in the form of a perspective view. Figure 1 As shown, the distributed precise coal distribution system includes a first coal distribution device 100, a second coal distribution device 200 and a third coal distribution device 300 which are adjacently arranged, and each coal distribution device includes a coal bunker 1 and a coal feeder 2 respectively arranged under the coal bunker 1.

[0055] The coal bunker 1 is in the shape of a bucket tube, including a coal bunker body 3 at the top and a discharge hopper 4 at the bottom. In the illustrated embodiment, the coal bunker body 3 is cylindrical, and the discharge hopper 4 is conical, with the diameter gradually decreasing from top to bottom, and the lower end is a discharge port.

[0056] The coal feeder 2 is arranged below the corresponding coal bunker and is used to receive the coal delivered by the coal bunker. The coal feeder weighs the received coal and delivers the coal to downstream devices such as a grinding mill. Figure 1 and Figure 5 As shown, the coal feeder includes a feed port 5 and a discharge port 6. Coal from the coal bunker is input into the coal feeder through the feed port 5, and the coal feeder conveys the received coal to the downstream device through the discharge port 6. The coal feeder can adopt a conventional belt conveyor or a scraper conveyor, etc., and its structure is well known to those skilled in the art, and its description is omitted here.

[0057] See also Figure 1 and Figure 2The gate door 7 is arranged on the passage connecting the coal bunker 1 and the coal feeder 2 to control the connection and closing of the connecting passage. When the passage is connected, the coal bunker feeds the coal feeder, and when the passage is closed, the coal bunker stops feeding. The gate door can adopt a conventional gate door, and its structure is well known to those skilled in the art, and its description is omitted here.

[0058] According to the technical solution of the utility model, at least one coal distribution device is designed to supply coal to the coal feeder of the adjacent coal distribution device in addition to supplying coal to its own coal feeder. Figure 1 and Figure 2 ,exist Figure 1 and Figure 2 In the illustrated embodiment, the first coal distribution device 100 is designed to simultaneously supply coal feeders of the second and third coal distribution devices 200 and 300, and for this purpose, a coal diversion system 9 is provided.

[0059] like Figure 1 and Figure 2 As shown, the coal diversion system 9 includes a diversion device connected to the coal bunker of the first coal distribution device 100, a scraper-type diversion coal feeder 11, and diversion pipes 12A and 12B. The diversion device includes two sub-diversion devices 10A and 10B, which are respectively located on the left and right sides of the coal bunker of the first coal distribution device 100 and have the same structure; the specific structure of the sub-diversion device is not particularly limited in the utility model, and traditional diversion devices such as diversion pipes and diversion hoppers can be used. Each sub-diversion device includes a feed end 13 located at the upper part and a discharge end 14 located at the lower part. The port of the feed end 13 is connected to the coal bunker 1 to receive the coal material in the coal bunker. In the illustrated embodiment, the port of the feed end 13 is connected to the discharge hopper 4 of the coal bunker 1, so that the sub-diversion device and the discharge hopper 4 of the coal bunker are connected to each other. As an optional solution, the port of the feed end 13 can also be connected to the coal bunker body 3.

[0060] The scraper-type split-flow coal feeder 11 extends along the arrangement direction of the three coal distribution devices, is arranged below the sub-dividing devices 10A and 10B and is used to receive the coal distributed by the sub-dividing devices 10A and 10B. The scraper-type split-flow coal feeder transports the received coal to the split-flow feed port 17 of the coal feeder of the second coal distribution device 200 and the third coal distribution device 300 through the split-flow pipes 12A and 12B. Figure 1 and Figure 5 As shown and described above, the coal feeder 2 of the second coal distribution device 200 and the third coal distribution device 300 includes a feed port 5 and a discharge port 6, and uses a belt conveyor or a scraper conveyor to transport coal. The feed port 5 is used to receive coal supplied from the coal bunker 1 corresponding to the coal feeder 2, and the received coal is transported to the discharge port 6 by the belt conveyor or the scraper conveyor and discharged through the discharge port 6. Figure 5 As shown, the diverter feed port 17 is located on the side of the feed port 5 opposite to the discharge port 6 , and the coal entering the coal feeder from the diverter feed port 17 is conveyed to the discharge port 6 by a belt conveyor or a scraper conveyor and discharged through the discharge port 6 .

[0061] See also Figure 2 and Figure 4 The scraper-type split-flow coal feeder includes two feed branches 15A and 15B and two discharge branches 16A and 16B. The discharge end 14 of each sub-dividing device is respectively connected to the feed branches 15A and 15B. The two discharge branches 16A and 16B of the scraper-type split-flow coal feeder are respectively connected to the split feed branch 17 of the coal feeder of the second coal distribution device 200 and the third coal distribution device 300 via the split pipes 12A and 12B. Thus, the coal from the sub-dividing devices 10A and 10B is respectively input to the scraper-type diverting coal feeder through the feed branch ports 15A and 15B, and the scraper-type diverting coal feeder delivers the received coal into the diverting pipes 12A and 12B through the discharge ports 16A and 16B, and delivers the coal to the diverting feed ports 17 of the coal feeders of the second coal distribution device 200 and the third coal distribution device 300 through the diverting pipes 12A and 12B, and then enters the coal feeder 2. See Figure 5 The coal feeder weighs the received coal and transports the coal to the discharge port 6.

[0062] Continue to see Figure 2 The gates 18 are respectively arranged on the communication passages connecting the sub-dividing devices 10A and 10B with the feed openings 15A and 15B of the scraper-type diverting coal feeder to control the connection and closing of the communication passages. Figure 1 and Figure 2 As shown, as a preferred solution, gate doors 19 are also provided on the communication passages between the two discharge ports 16A and 16B of the scraper-type split-flow coal feeder and the split-flow feed port 17 to control the connection and closing of the communication passages.

[0063] See below Figure 4 , the scraper type split flow coal feeder is explained. Figure 4 As shown, similar to the conventional scraper type coal feeder, the scraper type split flow coal feeder comprises a housing 20, sprockets 21 mounted at both ends of the housing, and a chain 22 sleeved on the two sprockets, on which a plurality of scrapers 23 are mounted. The bottom surface of the housing 20 is used as a coal bearing surface. In operation, the sprocket rotates under the drive of the motor and drives the chain sleeved thereon to rotate, and the chain drives the plurality of scrapers mounted thereon to move; the scrapers located at the lower side contact the bottom surface of the housing 20, and the coal scattered on the bottom surface of the housing is pushed by the scrapers.

[0064] Continue to see Figure 4 According to the scraper-type split-flow coal feeder of the utility model, another carrier plate 25 is installed on the upper side of the housing 20, and the top surface of the carrier plate 25 contacts the upper scraper passing by. One end (the right end in the figure) of the carrier plate 25 extends through the feed branch opening 15B and is located between the feed branch openings 15A and 15B, so that the coal entering through the feed branch opening 15B is scattered on the carrier plate 25 and pushed to the left by the upper scraper, while the coal entering through the feed branch opening 15A passes through the gap between the upper scrapers and is scattered on the bottom surface of the housing 20. The other end of the loading plate 25 (the left end in the figure) is located at the discharge port 16B of the scraper-type split-flow coal feeder, so that the coal entering the scraper-type split-flow coal feeder through the feed branch port 15B and pushed by the upper scraper is directly discharged from the discharge port 16B after leaving the loading plate 25, and enters the coal feeder 2 through the split-flow feed port 17 of the coal feeder of the third coal distribution device 300.

[0065] The operation of the distributed precise coal distribution system of the utility model is described below. Assume that the first coal distribution device 100 stores high-quality coal with high fuel value, and the second coal distribution device 200 and the third coal distribution device 300 store low-quality coal with low fuel value. The technical solution of the first embodiment enables the second coal distribution device 200 and the third coal distribution device 300 to obtain high-quality coal from the first coal distribution device 100 during peak electricity consumption periods, so the second coal distribution device 200 and the third coal distribution device 300 can switch operating conditions between high and low peak electricity consumption, that is, during low peak electricity consumption periods, the second coal distribution device 200 and the third coal distribution device 300 use their own coal feeders to transport low-quality coal to the corresponding units to maintain the operation of the units; when there is a peak electricity consumption period and the power generation needs to be increased, the first coal distribution device 100 can divert coal supply to the second coal distribution device 200 and the third coal distribution device 300, so that the second coal distribution device 200 and the third coal distribution device 300 can supply high-quality coal to the units to improve the power generation capacity of the units, increase the power supply to the power grid to stabilize the normal operation of the power grid.

[0066] The operation of the first coal distribution device 100 to supply coal to the second coal distribution device 200 and the third coal distribution device 300 is as follows. Start the scraper-type split-flow coal feeder to run the motor, the motor drives the sprocket to rotate counterclockwise, and the sprocket drives the chain wrapped around it to rotate counterclockwise; at the same time, open the gate door 18, so that the first coal distribution device 100 supplies coal to the scraper-type split-flow coal feeder 11 through the sub-dividing devices 10A and 10B: on the one hand, the coal supplied by the sub-dividing device 10A enters the scraper-type split-flow coal feeder through the feed branch port 15A, and the coal is scattered on the bottom surface of the shell 20 through the gap between the upper scrapers, and on the lower side. The coal is pushed to the right by the scraper and fed into the coal feeder 2 of the second coal distribution device 200 through the discharge port 16A; on the other hand, the coal fed by the sub-dividing device 10B enters the scraper-type diverting coal feeder through the feed diverting port 15B, and the coal entering is scattered on the carrier plate 25, and is pushed to the left by the upper scraper. After leaving the carrier plate 25, the pushed coal falls downward into the discharge port 16B, and enters the coal feeder 2 through the diverting feed port 17 of the coal feeder of the third coal distribution device 300. Thus, the second coal distribution device 200 and the third coal distribution device 300 can respectively obtain high-calorific value high-quality coal from the first coal distribution device 100.

[0067] In the scheme described above (for the sake of clarity, it is referred to as the first scheme of the first embodiment below), the other end of the loading plate 25 (the left end in the figure) is located at the discharge port 16B of the scraper-type split-flow coal feeder, so that the coal entering the scraper-type split-flow coal feeder through the feed branch port 15B and pushed by the upper scraper is directly discharged from the discharge port 16B after leaving the loading plate 25, and enters the coal feeder 2 through the split feed port 17 of the coal feeder of the third coal distribution device 300. As a modified version of the first scheme of the first embodiment, the structure of the coal diversion system 9 can also be arranged as follows: the other end of the loading plate 25 (the left end in the figure) is located at the left end of the discharge port 16B of the scraper-type diversion coal feeder, so that the coal entering the scraper-type diversion coal feeder through the feed port 15B and pushed by the scraper is not discharged directly from the discharge port 16B after leaving the loading plate 25, but is first scattered on the bottom surface of the shell 20 and pushed to the right by the lower scraper for a certain distance before being discharged from the discharge port 16B.

[0068] In the scheme described above, the diverter device includes two sub-diverters 10A and 10B, each of which includes a feed end 13 and a discharge end 14. As a modified embodiment, the diverter device can also adopt a "human" shaped diverter device, which includes a feed end and two discharge ends.

[0069] In the scheme described above, the first coal distribution device 100 is designed to simultaneously supply materials to the coal feeders of the second and third coal distribution devices 200 and 300; in addition, the distributed precision coal distribution system can also be designed so that the second coal distribution device 200 is configured to simultaneously supply materials to the coal feeders of the first and third coal distribution devices 100 and 300, as described in detail below.

[0070] See also Figure 1 and Figure 2 The coal diversion system 9 includes a diversion device 10C connected to the coal bunker of the second coal distribution device 200, a scraper-type diversion coal feeder 11, and diversion pipes 12B and 12C. The specific structure of the diversion device 10C is not particularly limited in the present invention, and traditional diversion devices such as diversion pipes and diversion hoppers can be used. The diversion device 10C includes a feed end 33 located at the upper part and a discharge end 34 located at the lower part. The port of the feed end 33 is connected to the coal bunker 1 to receive the coal material in the coal bunker. In the illustrated embodiment, the port of the feed end 33 is connected to the discharge hopper 4 of the coal bunker 1, so that the diversion device and the discharge hopper 4 of the coal bunker are connected to each other. As an optional solution, the feed port of the feed end 33 can also be connected to the coal bunker body 3.

[0071] The scraper-type split-flow coal feeder delivers the coal received from the split-flow device 10C to the split-flow feed port 17 of the coal feeder of the first coal distribution device 100 and the third coal distribution device 300 via the split-flow pipes 12C and 12B. The scraper-type split-flow coal feeder includes a feed port 15C and a discharge port 16C and 16B, the discharge end 34 of the split-flow device 10C is connected to the feed port 15C, and the discharge ports 16C and 16B of the scraper-type split-flow coal feeder are connected to the split-flow feed port 17 of the coal feeder of the first coal distribution device 100 and the third coal distribution device 300 via the split-flow pipes 12C and 12B, respectively. Thus, the coal from the diverter device 10C is input to the scraper-type diverter coal feeder through the feed port 15C, and the scraper-type diverter coal feeder delivers the received coal into the diverter pipes 12C and 12B through the discharge ports 16C and 16B, and delivers the coal to the diverter feed port 17 of the coal feeder of the first coal distribution device 100 and the third coal distribution device 300 through the diverter pipes 12C and 12B, respectively, and then enters the coal feeder 2. See Figure 5 The coal feeder weighs the received coal and transports the coal to the discharge port 6.

[0072] Continue to see Figure 2 The gate door 38 is arranged on the communication passage connecting the flow dividing device 10C and the feed port 15C of the scraper type flow dividing coal feeder, so as to control the connection and closing of the communication passage. Figure 1 and Figure 2As shown, gate doors 19 are also provided on the communication passages between the two discharge ports 16C and 16B of the scraper-type split-flow coal feeder and the split-flow feed port 17, respectively, to control the connection and closing of the communication passages.

[0073] According to the technical solution of the present utility model, the second coal distribution device 200 is configured to work in three modes: to divert the supply to the first coal distribution device 100 alone, to divert the supply to the third coal distribution device 300 alone, and to divert the supply to both the first coal distribution device 100 and the third coal distribution device 300 at the same time.

[0074] Separately feed the first coal distribution device 100

[0075] See also Figure 2 and Figure 4 The operation of the second coal distribution device 200 to supply coal to the first coal distribution device 100 separately is as follows: start the scraper-type split-flow coal feeder to run the motor, the motor drives the sprocket to rotate clockwise, and the sprocket drives the chain wrapped around it to rotate clockwise; open the gate door 19 of the coal feeder of the first coal distribution device 100, and open the gate door 38 so that the second coal distribution device 200 supplies coal to the scraper-type split-flow coal feeder 11 through the split device 10C; the coal supplied by the split device 10C enters the scraper-type split-flow coal feeder through the feed port 15C, and the coal is scattered on the bottom surface of the shell 20 through the gap between the upper scrapers, and is pushed to the left by the lower scraper and supplied to the coal feeder 2 of the first coal distribution device 100 through the discharge port 16C. In this way, the first coal distribution device 100 can obtain coal from the second coal distribution device 200.

[0076] Separately feed the third coal distribution device 300

[0077] See also Figure 2 and Figure 4 , the operation of the second coal distribution device 200 to separately divert coal to the third coal distribution device 300 is as follows: start the scraper-type divert coal feeder to run the motor, the motor drives the sprocket to rotate clockwise, and the sprocket drives the chain sleeved thereon to rotate clockwise; open the gate door 19 of the coal feeder of the third coal distribution device 300 and close the gate door 19 of the coal feeder of the first coal distribution device 100, open the gate door 38 to allow the second coal distribution device 200 to supply coal to the scraper-type divert coal feeder 11 through the diverting device 10C; the coal supplied by the diverting device 10C enters the scraper-type divert coal feeder through the feed port 15C, and the coal is scattered on the bottom surface of the shell 20 through the gap between the upper scrapers, and is pushed to the left through the discharge port 16C under the push of the lower scraper and is supplied to the coal feeder 2 of the third coal distribution device 300 through the discharge port 16B. Thus, the third coal distribution device 300 can obtain the coal material from the second coal distribution device 200 .

[0078] At the same time, the first coal distribution device 100 and the third coal distribution device 300 are split and fed.

[0079] In order to simultaneously split and feed the first coal distribution device and the third coal distribution device, the structure of the discharge port 16C needs to be changed. Figure 2 and Figure 4 As mentioned above, the scraper-type split-flow coal feeder includes a housing 20, sprockets 21 installed at both ends of the housing, and a chain 22 sleeved on the two sprockets, and a plurality of scrapers 23 are installed on the chain. The chain is arranged in the center, and the scrapers are installed on both sides of the chain respectively, so that the bottom surface of the housing 20 is divided into two left and right areas by the chain when viewed along the direction of the chain. In order to realize the split-flow feeding to the first and third coal distribution devices at the same time, the bottom surface of the housing 20 only forms an opening connected to the discharge port 16C in the left area or the right area of ​​the chain.

[0080] Continue to see Figure 2 and Figure 4 The second coal distribution device 200 simultaneously distributes the material to the first coal distribution device 100 and the third coal distribution device 300 as follows: start the scraper-type split coal feeder to make the motor run, the motor drives the sprocket to rotate clockwise, and the sprocket drives the chain sleeved thereon to rotate clockwise; open the gate door 19 of the coal feeder of the first coal distribution device 100 and the gate door 19 of the coal feeder of the third coal distribution device 300, open the gate door 38 so that the second coal distribution device 200 can be fed to the scraper-type split coal feeder through the split device 10C; The coal feeder 11 supplies coal; the coal supplied by the diverter device 10C enters the scraper-type diverter coal feeder through the feed port 15C, and the coal is scattered on the bottom surface of the shell 20 through the gap between the upper scrapers, and is pushed to the left by the lower scraper. When the coal passes through the discharge port 16C, the coal on one side of the chain is discharged through the discharge port 16C and supplied to the coal feeder 2 of the first coal distribution device 100, while the coal on the other side of the chain is continuously pushed forward and finally supplied to the coal feeder 2 of the third coal distribution device 300 through the discharge port 16B. As a result, the coal feeder of the first coal distribution device 100 and the coal feeder of the third coal distribution device 300 can simultaneously obtain the coal from the second coal distribution device 200.

[0081] In addition, the distributed precise coal distribution system can also be designed so that the third coal distribution device 300 is configured to supply materials to the coal feeders of the first and second coal distribution devices 100 and 200, as described in detail below.

[0082] See also Figure 1 and Figure 2The coal diversion system 9 includes a diversion device 10D connected to the coal bunker of the third coal distribution device 300, a scraper-type diversion coal feeder 11, and diversion pipes 12A and 12C. The diversion device 10D includes a feed end 53 at the top and a discharge end 54 at the bottom. The port of the feed end 53 is connected to the coal bunker 1 to receive the coal from the coal bunker.

[0083] The scraper-type split-flow coal feeder delivers the coal received from the split-flow device 10D to the split-flow feed port 17 of the coal feeder of the first coal distribution device 100 and the second coal distribution device 200 via the split-flow pipes 12C and 12A. The scraper-type split-flow coal feeder includes a feed port 15D and a discharge port 16C and 16A, the discharge end 54 of the split-flow device 10D is connected to the feed port 15D, and the discharge ports 16C and 16A of the scraper-type split-flow coal feeder are connected to the split-flow feed port 17 of the coal feeder of the first coal distribution device 100 and the second coal distribution device 200 via the split-flow pipes 12C and 12A, respectively. Thus, the coal from the diverter device 10D is input to the scraper-type diverter coal feeder through the feed port 15D, and the scraper-type diverter coal feeder delivers the received coal into the diverter pipes 12C and 12A through the discharge ports 16C and 16A, and delivers the coal to the diverter feed port 17 of the coal feeder of the first coal distribution device 100 and the second coal distribution device 200 through the diverter pipes 12C and 12A, respectively, and then enters the coal feeder 2. See Figure 5 The coal feeder weighs the received coal and transports the coal to the discharge port 6.

[0084] Continue to see Figure 2 The gate door 58 is arranged on the communication passage connecting the flow dividing device 10D and the feed port 15D of the scraper type flow dividing coal feeder, so as to control the connection and closing of the communication passage. Figure 1 and Figure 2 As shown, gate doors 19 are also provided on the communication passages between the two discharge ports 16C and 16A of the scraper-type split-flow coal feeder and the split-flow feed port 17, respectively, to control the connection and closing of the communication passages.

[0085] Similar to the second coal distribution device 200 that diverts and supplies material to the first coal distribution device and the third coal distribution device, according to the technical solution of the present utility model, the third coal distribution device 300 is configured to operate in three modes: diverting and supplying material to the first coal distribution device alone, diverting and supplying material to the second coal distribution device alone, and diverting and supplying material to the first coal distribution device and the second coal distribution device at the same time.

[0086] The working mode of the third coal distribution device 300 to divert and feed the first coal distribution device and the second coal distribution device is basically the same as the working mode of the second coal distribution device 200 to divert and feed the first coal distribution device and the third coal distribution device, and the difference lies only in the following aspects. When the second coal distribution device 200 diverts and feeds the first coal distribution device and the third coal distribution device, after the coal supplied by the diverting device 10C enters the scraper-type diverting coal feeder through the feed port 15C, the coal is directly scattered on the bottom surface of the shell 20 through the gap between the upper scrapers, and then pushed forward to the discharge port 16C and / or the discharge port 16B under the push of the lower scraper; and when the third coal distribution device 300 diverts and feeds the first coal distribution device and the second coal distribution device, as Figure 4 As shown, after the coal supplied by the diverter device 10D enters the scraper-type diverter coal feeder through the feed port 15D, it is first scattered on the carrier plate 25 and pushed by the upper scraper. After leaving the carrier plate 25, the pushed coal is scattered downward on the bottom surface of the shell 20, and then pushed to the discharge port 16C and / or the discharge port 16A under the push of the lower scraper.

[0087] Another difference is that when the third coal distribution device 300 distributes the feed to the first coal distribution device and the second coal distribution device, the sprocket can rotate clockwise or counterclockwise. When the sprocket rotates clockwise, the coal scattered on the carrier plate 25 is pushed to the right side of the figure by the upper scraper; when the sprocket rotates counterclockwise, the coal scattered on the carrier plate 25 is pushed to the left side of the figure by the upper scraper, and the gate door 19 of the coal feeder of the third coal distribution device 300 needs to be closed.

[0088] Second embodiment

[0089] Combine the following Figure 6-Figure 9 The second embodiment of the utility model is described as a distributed precision coal distribution system. The overall structure of the second embodiment is basically the same as that of the first embodiment. The only difference lies in the structure of the coal feeder of the coal distribution device and the connection method between the scraper-type diversion coal feeder and the coal feeder. The same components are marked with the same figure marks.

[0090] See also Figure 5 In the first embodiment, the coal feeder 2 includes a feed port 5, a discharge port 6, and a diversion feed port 17 located on the side of the feed port 5 opposite to the discharge port 6; the discharge port 16A, 16B or 16C of the scraper-type diversion coal feeder is connected to the diversion feed port 17.

[0091] In the second embodiment, see Figure 6-Figure 8The coal feeder 2 includes a feed port 5, a discharge port 6, and a split feed port 37. The split feed port 37 is arranged opposite to the discharge port 6, and the coal entering from the split feed port 37 is directly discharged from the discharge port 6. The discharge port 16A, 16B or 16C of the scraper split feeder is connected to the corresponding split feed port 37 of the coal feeder of the first to third coal distribution devices. In other structural aspects and working methods, the second embodiment is the same as the first embodiment, and its description is omitted for simplicity.

[0092] Third embodiment

[0093] Combine the following Figure 10-12 The distributed precision coal distribution system of the third embodiment of the utility model is described. The overall structure of the third embodiment is basically the same as that of the first embodiment. The only difference lies in the structure of the coal feeder of the coal distribution device and the connection method between the scraper-type diversion coal feeder and the coal feeder. The same components are marked with the same figure marks.

[0094] In the third embodiment, see Fig.11 The coal feeder 2 includes a feed port 5 and a discharge port 6, and the scraper-type split-flow coal feeder 11 conveys the coal to the coal feeder 2 of the coal distribution device via a split-flow pipe 112. One end of the split-flow pipe 112 is connected to the discharge port 16A, 16B or 16C of the scraper-type split-flow coal feeder 11, and the other end is connected to the feed port 5 of the coal feeder 2 and the channel 50 of the corresponding coal bunker 1. The scraper-type split-flow coal feeder conveys the received coal into the split-flow pipe 112 via the discharge port 16A, 16B or 16C, and conveys the coal to the channel 50 via the split-flow pipe 112, and then enters the coal feeder 2 via the feed port 5 of the coal feeder. In other structural aspects and working methods, the third embodiment is the same as the first embodiment, and its description is omitted for simplicity.

[0095] According to the technical solution of the utility model, the distributed precision coal distribution system can be constructed into any one of the following configurations: any one of the coal distribution devices is configured to divert the supply to other coal distribution devices; two of the coal distribution devices are configured to divert the supply to other coal distribution devices; and all the coal distribution devices are configured to divert the supply to other coal distribution devices. The specific setting structure can be selected according to the specific application.

[0096] In the above described embodiment, the distributed accurate coal distribution system includes three coal distribution devices, but the present invention is not limited thereto, and the distributed accurate coal distribution system may also include more than three coal distribution devices.

[0097] The utility model is described above with reference to the accompanying drawings in conjunction with specific embodiments, but this is only for the purpose of illustration, and the utility model is not limited thereto. Therefore, it is obvious to those skilled in the art that various changes and modifications can be made within the technical spirit and scope of the utility model, and these changes and modifications should also be understood to belong to the scope of the utility model, and the scope of the utility model is limited by the technical solution claimed and its equivalent solution.

Claims

1. A distributed precise coal distribution system, comprising at least three coal distribution devices, each of which comprises a coal bunker and a coal feeder arranged below the coal bunker; The coal bunker comprises a coal bunker main body located at the upper part and a discharge hopper located at the lower part; The coal feeder comprises a feed port and a discharge port, the coal from the coal bunker is input into the coal feeder through the feed port, and is transported by the coal feeder to the discharge port and discharged through the discharge port; The at least three coal distribution devices include a first coal distribution device, a second coal distribution device and a third coal distribution device; It is characterized in that The coal distribution system further includes a coal diversion system, which is arranged between the coal bunker of the first coal distribution device and the coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device, and the coal in the coal bunker of the first coal distribution device can be transported to the coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device via the coal diversion system; The coal diversion system includes a scraper-type diversion coal feeder extending along the arrangement direction of the at least three coal distribution devices and a first diversion device. The scraper-type diversion coal feeder includes a first feed port and two discharge ports. The feed end of the first diversion device is connected to the coal bunker of the first coal distribution device, and the discharge end of the first diversion device is connected to the first feed port; one of the two discharge ports is connected to the interior of the coal feeder of the second coal distribution device, and the other of the two discharge ports is connected to the interior of the coal feeder of the third coal distribution device.

2. The distributed precise coal distribution system according to claim 1, characterized in that: The first coal distribution device is arranged between the second coal distribution device and the third coal distribution device, the first feed port comprises two first feed sub-ports spaced apart in the longitudinal direction, and the discharge end of the first flow diversion device comprises two discharge ports respectively connected to the two first feed sub-ports; the scraper-type flow diversion coal feeder comprises a coal material bearing surface located below and a carrier plate located above, the coal material on the coal material bearing surface is pushed by the lower scraper, and the coal material on the carrier plate is pushed by the upper scraper, and one longitudinal end of the carrier plate is located between the two first feed sub-ports, so that the two discharge ends The coal coming out of one of the outlets passes through the gap between the upper scrapers and is scattered on the coal bearing surface and is pushed to one of the two outlet ports by the lower scraper, while the coal coming out of the other of the two outlet ports is scattered on the carrier plate; the other longitudinal end of the carrier plate is located above the other of the two outlets so that the coal leaving the carrier plate falls into the other of the two outlets, or the other longitudinal end of the carrier plate extends over the other of the two outlets so that the coal leaving the carrier plate falls onto the coal bearing surface and is pushed to the other of the two outlets by the lower scraper.

3. The distributed precise coal distribution system according to claim 2, characterized in that: The first flow diverter device includes two sub-flow diverters, the feed end of each sub-flow diverter device is respectively connected to the coal bunker of the first coal distribution device, and the discharge end of each sub-flow diverter device is respectively connected to the two first feed branch ports.

4. The distributed precise coal distribution system according to claim 1, characterized in that: The coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device include a diverter feed port, which is arranged on the side of the feed port opposite to the discharge port, one of the two discharge ports is connected to the diverter feed port of the coal feeder of the second coal distribution device, and the other of the two discharge ports is connected to the diverter feed port of the coal feeder of the third coal distribution device.

5. The distributed precise coal distribution system according to claim 1, characterized in that: The coal feeder of the second coal distribution device and the coal feeder of the third coal distribution device include a diversion feed port, which is arranged opposite to the discharge port, one of the two discharge ports is connected to the diversion feed port of the coal feeder of the second coal distribution device, and the other of the two discharge ports is connected to the diversion feed port of the coal feeder of the third coal distribution device.

6. The distributed precise coal distribution system according to claim 1, characterized in that: One of the two discharge ports is connected to the feed port of the coal feeder connected to the second coal distribution device and the channel of the corresponding coal bin via a bypass pipe, and the other of the two discharge ports is connected to the feed port of the coal feeder connected to the third coal distribution device and the channel of the corresponding coal bin via a bypass pipe.

7. The distributed precise coal distribution system according to claim 2 or 3, characterized in that: The coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet; The feed end of the second flow dividing device is connected to the coal bunker of the second coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port; The third discharge port is connected to the interior of the coal feeder of the first coal-fired distribution device, and the coal coming out of the discharge end of the second diversion device passes through the gap between the upper scrapers and is scattered on the coal bearing surface and is pushed toward the third discharge port by the lower scraper. A gate door is provided on the connecting passage between the third discharge port and the coal feeder of the first coal-fired distribution device.

8. The distributed precise coal distribution system according to claim 2 or 3, characterized in that: The coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet; The feed end of the second flow dividing device is connected to the coal bunker of the second coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port; The third discharge port is connected to the inside of the coal feeder of the first coal distribution device, and the coal coming out of the discharge end of the second diversion device passes through the gap between the upper scrapers and is scattered on the coal bearing surface and is pushed toward the third discharge port by the lower scraper; the chain of the scraper-type diversion coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the chain. When viewed along the travel direction of the chain, the coal bearing surface only forms an opening connected to the third discharge port in an area on one side of the chain.

9. The distributed precise coal distribution system according to claim 2 or 3, characterized in that: The coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet; The feed end of the second flow dividing device is connected to the coal bunker of the third coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port; The third discharge port is connected to the interior of the coal feeder of the first coal-fired distribution device, the loading plate is located below the second feed port and receives the coal entering from the second feed port, the longitudinal dimension of the loading plate is set so that the coal leaving the loading plate falls on the coal bearing surface and is pushed toward the third discharge port by the lower scraper, and a gate door is provided on the connecting passage between the third discharge port and the coal feeder of the first coal-fired distribution device.

10. The distributed precise coal distribution system according to claim 2 or 3, characterized in that: The coal-fired diversion system further includes a second diversion device, and the scraper-type diversion coal feeder further includes a second feed inlet and a third discharge outlet; The feed end of the second flow dividing device is connected to the coal bunker of the third coal distribution device, and the discharge end of the second flow dividing device is connected to the second feed port; The third discharge port is connected to the interior of the coal feeder of the first coal distribution device, the carrier plate is located below the second feed port and receives the coal entering from the second feed port, and the longitudinal dimension of the carrier plate is set so that the coal leaving the carrier plate falls on the coal bearing surface and is pushed toward the third discharge port by the lower scraper; The chain of the scraper-type split-flow coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the scraper. Viewed along the travel direction of the chain, the coal-bearing surface forms an opening connected to the third discharge port only in one side area of ​​the chain.

11. The distributed precise coal distribution system according to claim 1, characterized in that: The first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device; the scraper-type diverter coal feeder includes a coal-bearing surface located below, and the coal on the coal-bearing surface is pushed by the lower scraper. The coal coming out of the discharge end of the first diverter device passes through the gap between the upper scrapers and is scattered on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports. A gate door is provided on the connecting passage between one of the two discharge ports and the coal feeder of the second coal distribution device.

12. The distributed precise coal distribution system according to claim 1, characterized in that: The first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device; the scraper-type diverter coal feeder includes a coal-bearing surface located below, and the coal on the coal-bearing surface is pushed by the lower scraper. The coal coming out of the discharge end of the first diverter device passes through the gap between the upper scrapers and is scattered on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports; the chain of the scraper-type diverter coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the chain. When viewed along the travel direction of the chain, the coal-bearing surface only forms an opening connected to one of the two discharge ports in the area on one side of the chain.

13. The distributed precise coal distribution system according to claim 1, characterized in that: The first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device; The scraper-type split-flow coal feeder comprises a coal-bearing surface located below and a carrier plate located above, the coal on the coal-bearing surface is pushed by the lower scraper, and the coal on the carrier plate is pushed by the upper scraper, the carrier plate is located below the first feed port and receives the coal entering from the first feed port, and the longitudinal dimension of the carrier plate is set so that the coal leaving the carrier plate falls on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports; A gate door is provided on the communication passage between one of the two discharge ports and the coal feeder of the second coal distribution device.

14. The distributed precise coal distribution system according to claim 1, characterized in that: The first coal distribution device is adjacent to the second coal distribution device, and the second coal distribution device is adjacent to the third coal distribution device; The scraper-type split-flow coal feeder comprises a coal-bearing surface located below and a carrier plate located above, the coal on the coal-bearing surface is pushed by the lower scraper, and the coal on the carrier plate is pushed by the upper scraper, the carrier plate is located below the feed port and receives the coal entering from the first feed port, and the longitudinal dimension of the carrier plate is set so that the coal leaving the carrier plate falls on the coal-bearing surface and is pushed by the lower scraper toward the two discharge ports; The chain of the scraper-type split-flow coal feeder is centrally arranged, and the scrapers are respectively installed on both sides of the scraper. Viewed along the travel direction of the chain, the coal-bearing surface forms an opening connected to one of the two discharge ports only in an area on one side of the chain.

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