Precise material distribution system with bidirectional feeding machine

Abstract

The invention discloses a material precise distribution system with bidirectional feeding machines, which comprises a first material distribution device, a second material distribution device and a material distribution system, the first material distribution device comprises a first stock bin and a first feeding machine, and the second material distribution device comprises a second stock bin and a second feeding machine; the material distribution system comprises a bidirectional feeding machine, and the bidirectional feeding machine comprises a shell and a material conveyor; the material conveyor comprises a conveying mechanism and a driving motor. The conveying mechanism comprises two rotating shafts at the two longitudinal ends and a material conveying component arranged on the peripheries of the rotating shafts in a sleeving mode. The material conveyor is provided with two driving motors capable of rotating forwards and backwards, and the driving motors are connected with one of the two rotating shafts and synchronously drive the corresponding rotating shaft in the same direction. The first feed port is communicated with the first stock bin, and the second feed port is communicated with the second stock bin; the first discharging port is communicated with the interior of the second feeding machine, and the second discharging port is communicated with the interior of the first feeding machine.

Description

Technical Field

[0001] The invention relates to the technical field of material distribution, and in particular to a precise material distribution system with a bidirectional feeding machine. Background Art

[0002] The diversion and distribution of coal has been more and more widely used in the field of power generation. CN221499872U discloses a traditional coal diversion and distribution system, which includes two coal distribution devices, each of which includes a coal bunker and a coal feeder arranged below the coal bunker, and the coal bunker of each coal distribution device is configured to supply coal to the coal feeder of the adjacent coal distribution device in addition to supplying coal to its own coal feeder. To this end, a diversion coal feeder is arranged between the two coal distribution devices, and the diversion coal feeder includes a first coal inlet and a second coal inlet spaced apart in the longitudinal direction, and a first coal outlet and a second coal outlet spaced apart in the longitudinal direction; the first coal inlet and the second coal outlet are located at one longitudinal end of the diversion coal feeder, and the second coal inlet and the first coal outlet are located at the other longitudinal end of the diversion coal feeder. The first coal inlet is connected to one coal bunker, and the second coal inlet is connected to another coal bunker; the split coal feeder conveys the coal received from the first coal inlet to the first coal outlet and discharges it from the first coal outlet, or the split coal feeder conveys the coal received from the second coal inlet to the second coal outlet and discharges it from the second coal outlet. The split coal feeder usually adopts a belt conveyor or a scraper conveyor.

[0003] The traditional belt conveyor includes a belt, two belt rollers fixed on two rotating shafts at both ends of the longitudinal direction, the belt sleeve is wound around the two belt rollers, one of the two rotating shafts is connected to the driving motor, and in operation, the driving motor realizes bidirectional feeding of materials by forward or reverse rotation. In the case of a single driving motor, when the driving motor rotates in one direction, the upper belt is in a taut state, and when the driving motor rotates in the opposite direction, the upper belt is in a relaxed state. There are many problems when the upper belt in a relaxed state is used to transport coal: the accurate weighing of the conveyed materials cannot be achieved, the weighing stability is poor, and it is difficult to achieve accurate distribution of the material quantity; in addition, when a single driving motor is used for driving, there are problems that the belt is easy to deviate and slip.

[0004] The conventional scraper conveyor includes two rotating shafts at both ends of the longitudinal direction, sprockets are fixedly mounted on the two rotating shafts, the chain sleeves are wound around the sprockets, and a plurality of scrapers are fixedly mounted on the chains. One of the two rotating shafts is connected to a driving motor, and in operation, the driving motor realizes bidirectional feeding of materials by rotating forward or reversely. In the case of a single driving motor for driving, when the driving motor rotates in one direction, the lower chain is in a taut state, and when the driving motor rotates in the opposite direction, the lower chain is in a relaxed state. When the lower chain in a relaxed state is used for coal transmission, there is a problem that the material on the bottom surface of the shell of the scraper conveyor cannot be reliably pushed, thereby causing the material to accumulate and adhere to the bottom surface of the shell. Especially in humid and rainy areas, the accumulation and adhesion of the material on the bottom surface of the shell will affect the transmission of the material, and in severe cases, it will cause shutdown.

[0005] In order to solve the above problems, the traditional technology adopts the solution of using two one-way feeding feeders, which are set up in two layers. However, there are many disadvantages in adopting such a solution: it takes up a lot of space and the installation space is limited; adding a feeding feeder greatly increases the cost and the maintenance workload; and the control is more complicated.

[0006] Therefore, there is a demand in the industry for a material distribution system with further improved structural performance. Summary of the invention

[0007] The present invention aims to overcome the defects of traditional technologies and its purpose is to provide a material precision distribution system with a two-way feeding feeder, which can effectively prevent the conveyor belt from running off track and slipping, achieve accurate weighing of the conveyed materials and thus achieve precise distribution of the material quantity, or effectively achieve reliable pushing of materials and prevent accumulation and adhesion of materials on the bottom surface of the shell; reduce installation space, reduce costs, and reduce maintenance workload.

[0008] To achieve the above object, according to the present invention, there is provided a material precision distribution system with a bidirectional feeding feeder, comprising a first material distribution device, a second material distribution device and a material diversion system, wherein the first material distribution device comprises a first silo and a first feeder arranged below the first silo, and the second material distribution device comprises a second silo and a second feeder arranged below the second silo; The material diversion system includes a bidirectional feeding feeder, and the bidirectional feeding feeder includes a shell and a material conveyor; The upper side of the shell is provided with a first feed port and a second feed port spaced apart in the longitudinal direction, and the lower side of the shell is provided with a first discharge port and a second discharge port spaced apart in the longitudinal direction; the first feed port and the second discharge port are located at one longitudinal end of the bidirectional feeding feeder, and the second feed port and the first discharge port are located at the other longitudinal end of the bidirectional feeding feeder; The material conveyor is used to convey the material received from the first feed port to the first discharge port and discharge it through the first discharge port, and to convey the material received from the second feed port to the second discharge port and discharge it through the second discharge port; The material conveyor comprises a conveying mechanism and a driving motor, wherein the conveying mechanism is arranged in the housing, and the conveying mechanism comprises two rotating shafts located at both ends of the conveying mechanism in the longitudinal direction and a material conveying component sleeved on the periphery of the two rotating shafts; The material conveyor is equipped with two drive motors, both of which can rotate forward and reversely; the two drive motors are respectively connected to one of the two rotating shafts and synchronously drive the corresponding rotating shaft in the same direction, so that the material conveying component rotates to convey the material; Among them, the first feed port is connected with the first silo through the first feed pipe, and the second feed port is connected with the second silo through the second feed pipe; the first discharge port is connected with the interior of the second feeder through the first discharge pipe, and the second discharge port is connected with the interior of the first feeder through the second discharge pipe.

[0009] Preferably, the material diversion system also includes a first diversion hopper, a feed end of the first diversion hopper is connected to the first silo, and a feed port is formed between the first diversion hopper and the first silo; and a discharge end of the first diversion hopper is connected to the first feed pipe.

[0010] Preferably, the material diversion system also includes a second diversion hopper, a feed end of the second diversion hopper is connected to the second silo, and a feed port is formed between the second diversion hopper and the second silo; and a discharge end of the second diversion hopper is connected to the second feed pipe.

[0011] Preferably, an elliptical feed port is formed between the first diversion hopper and the first silo.

[0012] Preferably, an elliptical feed port is formed between the second diversion hopper and the second silo.

[0013] Preferably, the first silo comprises a hopper, and the feed end of the first diversion hopper is connected to the hopper of the first silo.

[0014] Preferably, the second silo includes a hopper, and the feed end of the second diversion hopper is connected to the hopper of the second silo.

[0015] Preferably, the first feeder includes a feed port and a discharge port, and the first feeder also includes a first diversion feed port arranged opposite to the discharge port arranged thereon, and the second discharge port of the two-way feeding feeder is connected to the first diversion feed port via the second discharge pipe, and the material entering from the first diversion feed port is directly discharged from the discharge port of the first feeder.

[0016] Preferably, the second feeder includes a feed port and a discharge port, and the second feeder also includes a second diversion feed port arranged opposite to the discharge port arranged thereon, and the first discharge port of the two-way feeding feeder is connected to the second diversion feed port via the first discharge pipe, and the material entering from the second diversion feed port is directly discharged from the discharge port of the second feeder.

[0017] Preferably, the material conveyor is a belt conveyor, the material conveying component is a conveyor belt, and two belt rollers of the belt conveyor are respectively fixed on the two rotating shafts.

[0018] Preferably, the belt conveyor is a belt conveyor.

[0019] Preferably, the bidirectional feeding feeder also includes a chain cleaning device arranged directly below the conveying mechanism, the chain cleaning device includes two sets of sprockets located at the longitudinal ends of the chain cleaning device, chains used with the sprockets, and scrapers installed on the chains and moving with the chains, at least one set of the two sets of sprockets is equipped with a driving motor connected to the sprocket shaft and can rotate forward and reversely; in the assembled state, the lower end of the scraper located at the lower part is close to or in contact with the bottom surface of the shell.

[0020] Preferably, the two sets of sprockets are each equipped with a corresponding driving motor that can rotate forward and reversely.

[0021] Preferably, the material conveyor is a scraper conveyor, the material conveying components are a chain and a plurality of scrapers fixed on the chain, and two groups of sprockets of the scraper conveyor are respectively fixed on the two rotating shafts.

[0022] Preferably, the material is coal.

[0023] Preferably, the shell is a segmented shell, comprising at least two shell segments arranged in sequence along the longitudinal direction, and opposite ends of two adjacent shell segments are provided with flanges and are connected to each other through the flanges.

[0024] Preferably, an anti-deviation device is provided at one longitudinal end or both longitudinal ends of the upper section of the conveyor belt of the belt conveyor, and the anti-deviation device includes two anti-deviation guide plates, and the two anti-deviation guide plates are respectively arranged on the lateral sides of the conveyor belt and fixedly installed relative to the shell; the anti-deviation guide plate includes a stop surface facing the lateral side end of the conveyor belt, and the stop surface is adjacent to the lateral side end of the conveyor belt to prevent the conveyor belt from lateral deviation.

[0025] Preferably, the cross-section of the anti-deviation guide plate perpendicular to the longitudinal direction is C-shaped, including a middle web and wing plates located on the upper and lower sides of the middle web, and the inner surface of the middle web facing the conveyor belt is used as the stop surface.

[0026] Preferably, a cross section of the stop surface taken parallel to the conveyor belt surface is in an arcuate shape facing away from the conveyor belt.

[0027] The technical solution of the present invention can achieve accurate weighing of the conveyed materials, ensure stable weighing, achieve precise distribution of the material quantity, prevent the conveyor belt from deviating and solve the problem of conveyor belt slipping; or achieve reliable pushing of materials to prevent materials from accumulating and adhering to the bottom surface of the shell. Compared with the solution of using two double-layer one-way feeding feeders, the space occupied by the present invention is greatly reduced, and the installation space is reduced or not limited; compared with the solution of using two double-layer one-way feeding feeders, the technical solution of the present invention reduces one feeding feeder, greatly reducing the cost and reducing the maintenance workload; at the same time, the use of a single feeder makes control easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. Figure 1 is a perspective view illustrating the overall structure of a precise material distribution system with a bidirectional feeding feeder according to the present invention; Figure 2 yes Figure 1 The front view of the material precision distribution system with a bidirectional feeding feeder is shown; Figure 3 yes Figure 1 The right side view of the material precision distribution system with a bidirectional feeding feeder is shown; Figure 4 yes Figure 1 A partially cutaway front view of a precise material distribution system with a bidirectional feeding feeder is shown; Figure 5 is a perspective view illustrating the overall structure of a bidirectional feeding feeder according to a first embodiment of the present invention; Figure 6 yes Figure 5A cross-sectional view of the bidirectional feeding feeder shown; Figure 7 is a perspective view of a chain sweeper; Fig. 8A is similar to Figure 6 A view of the conveyor belt, illustrating a conveyor belt anti-deviation device; Figure 8B is a partial perspective view illustrating a conveyor belt anti-deviation device; Figure 8C is a cross-sectional view of the conveyor belt anti-deviation device and its mounting structure taken along a surface parallel to the conveyor belt surface; and Fig. 9 is similar to Figure 6 , which illustrates a cross-sectional view of a bidirectional feeding feeder according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0029] The precise material distribution system with a bidirectional feeding feeder of the present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present invention are merely illustrative and are only used to illustrate the principles of the present invention rather than to limit the present invention.

[0030] For the convenience of description, in the following description and other parts of this application, the longitudinal direction refers to the length extension direction of the bidirectional feeding feeder, which corresponds to the conveying direction of the material.

[0031] like Figure 1 and Figure 2 As shown, the material precision distribution system with a bidirectional feeding feeder includes a first material distribution device 10 and a second material distribution device 60 arranged adjacent to each other, and each material distribution device includes a silo 101 and a feeder 102 arranged below the silo 101 .

[0032] The silo 101 includes a hopper 104 . The hopper 104 is conical in shape, with a diameter gradually decreasing from top to bottom, and a discharge port at the lower end.

[0033] The feeder 102 is disposed below the corresponding silo and is used to receive the material delivered by the silo. The feeder delivers the material to a downstream device such as a grinding machine. Figure 3 As shown, the feeder includes a feed port 105 and a discharge port 106. The material from the silo 101 is input into the feeder through the feed port 105, and the feeder conveys the received material to the downstream device through the discharge port 106. The feeder can be 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.

[0034] According to the technical solution of the present invention, the two material distribution devices are designed to supply materials to the feeders of adjacent material distribution devices in addition to supplying materials to their own feeders. To this end, a material diversion system 109 is provided between the first material distribution device 10 and the second material distribution device 60, see Figure 1 The material diversion system 109 includes a first diversion hopper 110 , a second diversion hopper 210 , a bidirectional feeding feeder 100 , a first feed pipe 15 , a second feed pipe 17 , a first discharge pipe 19 and a second discharge pipe 21 .

[0035] Continue to see Figure 1 The first diverter hopper 110 and the second diverter hopper 210 include a silo connection portion 113 located at the upper portion and a hopper portion 114 located at the lower portion. The hopper portion 114 has a diameter that gradually decreases from top to bottom, and the lower end is a discharge port. The first diverter hopper 110 and the second diverter hopper 210 are respectively connected to the silo 101 of the first material distribution device 10 and the second material distribution device 60 through the silo connection portion 113. In the illustrated embodiment, the silo connection portion 113 is connected to the side wall of the hopper 104 of the silo, so that the first diverter hopper 110 and the second diverter hopper 210 are respectively connected to the hopper 104 of the corresponding silo, and a feed port 120 is formed between the first diverter hopper 110 and the second diverter hopper 210 and the hopper 104 of the corresponding silo, see Figure 4 As a preferred technical solution, the feed port formed between the first diverter hopper and the first silo is elliptical, and the feed port formed between the second diverter hopper and the second silo is also elliptical. The use of elliptical feed ports is conducive to the flow of materials and reduces or avoids the adhesion of materials on the inner wall of the hopper.

[0036] See also Figure 1-Figure 3 The bidirectional feeding feeder 100 is arranged below the first diverting hopper 110 and the second diverting hopper 210 and is used to receive the materials distributed by the first diverting hopper 110 or the second diverting hopper 210. The second feed pipe 17 is connected to the discharge port of the second diverting hopper 210, and the second discharge pipe 21 is connected to the first diverting feed port 117 of the feeder of the first material distributing device 10. The bidirectional feeding feeder transports the materials received from the second material distributing device 60 via the second feed pipe 17 to the first diverting feed port 117 of the feeder of the first material distributing device 10 via the second discharge pipe 21. The first diverting feed port 117 is arranged opposite to the discharge port 106 of the feeder of the first material conveying device, and the materials entering the diverting feed port 117 are directly discharged from the discharge port 106 of the feeder.

[0037] The first feed pipe 15 is connected to the discharge port of the first diversion hopper 110, and the first discharge pipe 19 is connected to the second diversion feed port 217 of the feeder of the second material dispensing device 60. The bidirectional feeding feeder transports the material received from the first material dispensing device 10 via the first feed pipe 15 to the second diversion feed port 217 of the feeder of the second material dispensing device 60 via the first discharge pipe 19. The second diversion feed port 217 is arranged opposite to the discharge port 106 of the feeder of the second material conveying device, and the material entering the diversion feed port 217 is directly discharged from the discharge port 106 of the feeder.

[0038] like Figure 1 As shown, the first feed pipe 15, the second feed pipe 17, the first discharge pipe 19 and the second discharge pipe 21 may be provided with a gate door 16, a gate door 18, a gate door 20 and a gate door 22 respectively to control the connection and closing of the corresponding pipelines.

[0039] By adopting the technical solution of the present invention, cross-flow diversion feeding between the first material distribution device and the second material distribution device can be realized. Taking the material as coal and used in a coal-fired thermal power plant as an example, assuming that the second material distribution device 60 stores high-quality coal with a high fuel value, and the first material distribution device 10 stores low-quality coal with a low fuel value, when the technical solution of cross-flow feeding between the two material distribution devices is adopted, cross-flow diversion feeding of high-quality coal and low-quality coal can be realized to adapt to different power generation conditions.

[0040] In the above technical solution, the second discharge pipe 21 is arranged to communicate with the first branch feed port 117 of the feeder of the first material distribution device 10, but the present invention is not limited thereto. The second discharge pipe 21 can also be arranged to communicate with the pipe 301 (see FIG. 1 ) connecting the silo 101 of the first material distribution device 10 and the feed port 105 of the corresponding feeder. Figure 1 ) is connected; similarly, the first discharge pipe 19 may also be configured to communicate with the second material distribution device 60 of the silo 101 and the corresponding feeder feed port 105 of the pipe 302 (see Figure 1 ) connected.

[0041] Combine the following Figure 5-Figure 9 The bidirectional feeder of the present invention is described.

[0042] See first Figure 5 and Figure 6 ,in, Figure 5 is a perspective view of a bidirectional feeding feeder according to a first embodiment of the present invention, Figure 6 yes Figure 5 The cross-sectional view of the bidirectional feeding feeder shown in the figure is used for conveying materials in the left and right directions shown in the figure.

[0043] like Figure 5and Figure 6 As shown, the bidirectional feeding feeder 100 includes a housing 1 and a material conveyor 2, wherein the upper side of the housing 1 is provided with a first feed port 11 and a second feed port 12 spaced apart in the longitudinal direction of the bidirectional feeding feeder, and the lower side of the housing 1 is provided with a first discharge port 13 and a second discharge port 14 spaced apart in the longitudinal direction, wherein the first feed port 11 and the second discharge port 14 are located at one longitudinal end ( Figure 5 The second feed port 12 and the first discharge port 13 are located at the other longitudinal end of the bidirectional feeder ( Figure 5 The first feed port 11 or the second feed port 12 is used to receive materials distributed from a silo, for example. The received materials are transported to the first discharge port 13 or the second discharge port 14 by the material conveyor 2 arranged in the bidirectional feeder and discharged from the first discharge port 13 or the second discharge port 14.

[0044] The housing can be an integral housing or a segmented housing. In the case of a segmented housing, the segmented housing comprises at least two housing segments arranged in sequence along the longitudinal direction, and the opposite ends of two adjacent housing segments are provided with flanges and connected to each other through the flanges.

[0045] Material conveyor 2 is used to realize bidirectional feeding. For details, please refer to Figure 6 , the material conveyor 2 transfers the material received from the first feed port 11 to the first discharge port 13 and discharges it through the first discharge port 13; or, the material conveyor 2 transfers the material received from the second feed port 12 to the second discharge port 14 and discharges it through the second discharge port 14. As an example, the bidirectional feeding feeder 1 of the present invention can be arranged under a coal bunker, for example, the coal bunker includes a first coal bunker and a second coal bunker, the first feed port 11 is used to receive the coal distributed by the first coal bunker, and the second feed port 12 is used to receive the coal distributed by the second coal bunker. As a preferred solution, the bidirectional feeding feeder can be provided with a weighing device to weigh the received material. The weighing device is a commonly used device in the field and is well known to those skilled in the art, and its description is omitted for brevity.

[0046] Continue to see Figure 5The first feed port 11 can be connected to a first material bin such as a coal bin through a first feed pipe 15, and a gate door 16 is provided on the first feed pipe 15 to control the connection and closing of the first feed pipe; similarly, the second feed port 12 can be connected to a second material bin such as a coal bin through a second feed pipe 17, and a gate door 18 is provided on the second feed pipe 17 to control the connection and closing of the second feed pipe. The first discharge port 13 can be connected to a downstream device through a first discharge pipe 19, and a gate door 20 is provided on the first discharge pipe 19 to control the connection and closing of the first discharge pipe; similarly, the second discharge port 14 can be connected to a downstream device through a second discharge pipe 21, and a gate door 22 is provided on the second discharge pipe 21 to control the connection and closing of the second discharge pipe. 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.

[0047] Combine the following Figure 5-Figure 7 The material conveyor 2 is described as follows. Figure 5-Figure 7 As shown, the material conveyor 2 is in the form of a belt conveyor, which is a common mechanism in the field and is well known to those skilled in the art, and includes a conveying mechanism and a driving motor. The conveying mechanism is arranged in the housing 1, including two rotating shafts (not shown) located at the longitudinal ends of the conveying mechanism and a conveyor belt 82 sleeved on the periphery of the two rotating shafts and used as a material conveying component. The conveyor belt 82 is sleeved on the belt rollers 23 respectively fixed on the two rotating shafts, and the rotating shaft is driven to rotate by the driving motor 25. A speed change mechanism 26 can be arranged between the rotating shaft and the driving motor 25, and the output end of the speed change mechanism is connected to the rotating shaft. There are many speed change mechanisms that can be used and are well known to those skilled in the art. For the sake of simplicity, their description is omitted. According to the technical solution of the present invention, the belt conveyor is equipped with two driving motors 25, which are respectively arranged at the longitudinal ends of the belt conveyor, that is, the two driving motors 25 are each connected to one of the two rotating shafts at the longitudinal front and rear ends, and each driving motor 25 is a driving motor that can rotate forward and backward. In actual operation, the two driving motors 25 drive the corresponding rotating shafts synchronously and in the same direction, so that the conveyor belt rotates to convey materials.

[0048] As a preferred solution, the belt conveyor is a belt conveyor, and the conveyor belt is a belt.

[0049] As a preferred solution, an anti-deviation device can be provided at one longitudinal end or at both longitudinal ends of the upper section of the conveyor belt of the belt conveyor. Figure 8A-8C Description of the anti-deviation device, Fig. 8A The belt conveyor shown is provided with anti-deviation devices 70 at both longitudinal ends of the upper section of the conveyor belt. Figure 8B The anti-deviation device includes two anti-deviation guide plates 71, and the two anti-deviation guide plates 71 are respectively arranged on both sides of the conveyor belt.

[0050] See also Figure 8B The anti-deviation guide plate 71 has a C-shaped cross-section perpendicular to the longitudinal direction, including a middle web 72 and wing plates 73 located on the upper and lower sides of the middle web. The inner surface of the middle web facing the conveyor belt is used as a stop surface, and the stop surface is adjacent to the lateral side end of the conveyor belt to prevent the conveyor belt from lateral deviation.

[0051] As a preferred solution, Figure 8C As shown, a cross section of the stop surface taken parallel to the conveyor belt surface is in an arcuate shape facing away from the conveyor belt.

[0052] See below Figure 8C , which shows an example of fixed installation of the anti-deviation guide plate. Figure 8C As shown, a nut 75 is welded on the anti-deviation guide plate 71, and a threaded hole 78 is formed on the boss 79 of the shell wall of the shell 1. During assembly, the screw is rotated in the threaded hole 78, one end of which is fixed to the nut 75, and the other end is fixed to the shell wall of the shell 1 through the nut 77, thereby fixing the anti-deviation guide plate on the shell 1. It should be noted here that the fixing installation method of the anti-deviation guide plate 71 relative to the shell 1 is not limited to the specific method described above, but can adopt any fixing method that is easily known to the technical field. The essence of the present invention is to set the anti-deviation guide plate 71, and the anti-deviation guide plate 71 is fixed relative to the shell to prevent the conveyor belt from lateral deviation.

[0053] In addition, the structure of the anti-deviation guide plate 71 is not limited to the specific form described above. The essence of the anti-deviation guide plate is that it includes a stop surface facing the lateral side end of the conveyor belt, and the stop surface is adjacent to the lateral side end of the conveyor belt to prevent the conveyor belt from deviating laterally.

[0054] During the operation of the bidirectional feeder, in the case of a belt conveyor, due to various reasons, materials such as coal may fall from the conveyor belt surface and accumulate on the bottom surface of the housing 1. If not removed in time, it may affect the transmission of the materials and may even cause downtime. To this end, as a preferred technical solution, the bidirectional feeder of the first embodiment of the present invention is equipped with a cleaning device for removing materials that fall and accumulate on the bottom surface of the housing 1.

[0055] See also Figure 6 and Figure 7The cleaning device of the present invention is in the form of a chain cleaning device 3, which is arranged directly below the conveying mechanism of the belt conveyor 2, and includes two sets of sprockets 56 fixed on the sprocket shaft 32 at both longitudinal ends of the chain cleaning device, a chain 27 used with the sprocket, and a plurality of scrapers 28 installed on the chain and moving with the chain. In the assembled state, the lower end of the scraper 28 located at the bottom is close to or in contact with the bottom surface 30 of the shell, so that the material on the bottom of the shell can be pushed to the first discharge port 13 or the second discharge port 14. The sprocket 56 is driven by a drive motor 29, and the drive motor 29 adopts a drive motor that can rotate forward and reversely, and the drive motor is connected to the sprocket shaft 32 through a speed change mechanism 31. According to the present invention, a scheme in which one of the two sets of sprockets is equipped with a drive motor can be adopted, and a scheme in which both sets of sprockets are equipped with drive motors can also be adopted. Figure 6 and Figure 7 The latter technical solution is illustrated in FIG. When two drive motors are used, each drive motor 29 is a drive motor that can rotate forward and backward. In operation, the two drive motors 29 run synchronously in the same direction.

[0056] In the embodiment of the chain cleaning device 3 described above, the chain cleaning device is equipped with two groups of sprockets 56 located at both ends in the longitudinal direction and a chain 27 wrapped around the sprockets, but the present invention is not limited thereto. The chain cleaning device can also be equipped with two chains or multiple chains, in which case, a corresponding number of sprockets are installed on each sprocket shaft 32. In the present application, each group of sprockets means including one sprocket, two sprockets or multiple sprockets.

[0057] The operation of the bidirectional feeding feeder of the present invention is described below by taking receiving materials from the first feeding port 11 as an example.

[0058] See also Figure 5 and Figure 6 During operation, the gate doors 16 and 20 are opened, so that the first feed port 11 is connected to the material source such as coal bunker via the first feed pipe 15, and the first discharge port 13 is connected to the downstream device via the first discharge pipe 19; at the same time, the gate doors 18 and 22 are closed. The material from the material source flows through the first feed pipe 15 and enters the bidirectional feeder via the first feed port 11; at the same time, the two drive motors 25 of the belt conveyor run synchronously in the same direction. Figure 5 and Figure 6 In the illustrated embodiment, the two drive motors 25 rotate counterclockwise, thereby driving the upper section of the conveyor belt to rotate in a counterclockwise direction. Figure 6The material entering from the first feed port 11 is scattered on the conveyor belt, driven by the conveyor belt to move to the left, and enters the first discharge pipe 19 through the first discharge port 13 and flows to the downstream device. In order to remove the material dropped from the conveyor belt on the bottom surface of the shell, the chain cleaning device and the belt conveyor are started at the same time, and the drive motor 29 of the chain cleaning device rotates clockwise; during the operation of the chain cleaning device, the scraper 28 at the bottom pushes the material dropped on the bottom surface of the shell forward (to the left in the figure) and pushes the material into the first discharge port 13.

[0059] By adopting the technical solution of the present invention, since the belt conveyor is equipped with two driving motors for driving the two rotating shafts at the longitudinal ends of the conveying mechanism respectively, no matter in which direction the material is conveyed, the upper section of the conveyor belt for carrying and transporting the material is always in a taut state, so that: 1. The conveyor belt is not easy to deviate and the problem of belt slippage is solved; 2. Accurate weighing of the conveyed material can be achieved, the weighing stability is guaranteed, and the precise distribution of the material quantity is achieved; 3. Compared with the solution of adopting two double-layer unidirectional feeding feeders, the occupied space is greatly reduced, and the limitation of the installation space is reduced or not; 4. Compared with the solution of adopting two double-layer unidirectional feeding feeders, one feeding feeder is reduced, which greatly reduces the cost and reduces the maintenance workload; 5. The use of a single feeder makes control easier.

[0060] In the first embodiment of the bidirectional feeding feeder 1 described above, the material conveyor is in the form of a belt conveyor, but the present invention is not limited thereto, and the material conveyor may be in other forms, such as a scraper conveyor or a screw conveyor. In the case of a screw conveyor, the cleaning device may be omitted, and the screw conveying rod of the screw conveyor may be driven by a single drive motor or a dual drive motor that can rotate forward and backward. In the case of a dual drive motor, the two drive motors are connected to the longitudinal ends of the screw conveying rod through a speed change mechanism. The structure of the screw conveyor itself is well known to those skilled in the art, and its description is omitted for simplicity.

[0061] Combine the following Fig. 9 A second embodiment of the bidirectional feeding feeder of the present invention is described. Fig. 9 The overall structure of the bidirectional feeding feeder shown is Figure 6 The illustrated embodiments are substantially the same, the difference being the material conveyor used, specifically the conveying mechanism of the material conveyor. Therefore, the same components are designated by the same reference numerals and their description is omitted, and only the difference between the two will be described below.

[0062] Fig. 9 is similar to Figure 6The view shows a bidirectional feeding machine using a scraper conveyor according to the present invention. In the case of using a scraper conveyor, the cleaning device is omitted. The scraper conveyor is a commonly used mechanism in the field and is well known to those skilled in the art. It includes a conveying mechanism and a driving motor. The conveying mechanism is arranged in a housing 1, including two rotating shafts 50 located at both ends of the conveying mechanism in the longitudinal direction and a material conveying component sleeved on the periphery of the two rotating shafts. The material conveying component includes a chain 51 and a plurality of scrapers 52 fixedly mounted on the chain 51. The chain 51 is sleeved on two sets of sprockets 53 respectively fixed on the two rotating shafts. The rotating shaft is driven to rotate by a driving motor. A speed change mechanism can be arranged between the rotating shaft and the driving motor, and the output end of the speed change mechanism is connected to the rotating shaft 50.

[0063] It should be noted that, as described above in conjunction with the chain cleaning device 3, in addition to the technical solution of using one chain 51, the material conveying component can also adopt a solution including two chains or multiple chains, in which case a corresponding number of sprockets are installed on each rotating shaft 50. In this application, each set of sprockets means including one sprocket, two sprockets or multiple sprockets.

[0064] According to the technical solution of the second embodiment of the present invention, the scraper conveyor is driven by dual drive motors, and the two rotating shafts 50 (i.e., sprocket shafts) located at the longitudinal front and rear ends are each equipped with their own drive motors 38, which are respectively arranged at the longitudinal ends of the scraper conveyor, and each drive motor is a drive motor that can rotate forward and backward. In actual operation, the two drive motors run synchronously in the same direction. When the scraper conveyor is in the assembled state, the lower end of the lower scraper is close to or in contact with the bottom surface 30 of the shell to facilitate the pushing of the material. During operation, the material received from the first feed port 11 or the second feed port 12 falls to the bottom surface 30 of the shell through the gap between the upper scrapers, and the material on the bottom surface of the shell is pushed forward by the lower scraper to the first discharge port 13 or the second discharge port 14, and discharged through the first discharge port 13 or the second discharge port 14.

[0065] By adopting the technical solution of the second embodiment of the present invention, since the scraper conveyor is equipped with two driving motors for synchronously and unidirectionally driving the two rotating shafts at the longitudinal ends of the conveying mechanism, no matter in which direction the material is conveyed, the lower part of the chain for pushing the material is always in a taut state, so that: 1. Reliable pushing of materials can be achieved to prevent materials from accumulating and adhering to the bottom surface of the shell; 2. Compared with the solution of adopting two double-layer unidirectional feeding feeders, the occupied space is greatly reduced, and the limitation of the installation space is reduced or not; 3. Compared with the solution of adopting two double-layer unidirectional feeding feeders, one feeding feeder is reduced, which greatly reduces the cost and reduces the maintenance workload; 4. The use of a single feeder makes control easier.

[0066] The present invention has been described above with reference to the accompanying drawings in conjunction with specific embodiments, but this is only for the purpose of illustration, and the present invention 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 present invention, and these changes and modifications should also be understood to belong to the scope of the present invention, and the scope of the present invention is limited by the claimed technical solution and its equivalents.

Claims

1. A material precision distribution system with a bidirectional feeding feeder, comprising a first material distribution device, a second material distribution device and a material diversion system, wherein the first material distribution device comprises a first silo and a first feeder arranged below the first silo, and the second material distribution device comprises a second silo and a second feeder arranged below the second silo; characterized in that: The material diversion system includes a bidirectional feeding feeder, and the bidirectional feeding feeder includes a housing and a material conveyor; The upper side of the shell is provided with a first feed port and a second feed port spaced apart in the longitudinal direction, and the lower side of the shell is provided with a first discharge port and a second discharge port spaced apart in the longitudinal direction; the first feed port and the second discharge port are located at one longitudinal end of the bidirectional feeding feeder, and the second feed port and the first discharge port are located at the other longitudinal end of the bidirectional feeding feeder; The material conveyor is used to convey the material received from the first feed port to the first discharge port and discharge it through the first discharge port, and to convey the material received from the second feed port to the second discharge port and discharge it through the second discharge port; The material conveyor comprises a conveying mechanism and a driving motor, wherein the conveying mechanism is arranged in the housing, and the conveying mechanism comprises two rotating shafts located at both ends of the conveying mechanism in the longitudinal direction and a material conveying component sleeved on the periphery of the two rotating shafts; The material conveyor is equipped with two drive motors, both of which can rotate forward and reversely; the two drive motors are respectively connected to one of the two rotating shafts and synchronously drive the corresponding rotating shaft in the same direction, so that the material conveying component rotates to convey the material; Among them, the first feed port is connected with the first silo through the first feed pipe, and the second feed port is connected with the second silo through the second feed pipe; the first discharge port is connected with the interior of the second feeder through the first discharge pipe, and the second discharge port is connected with the interior of the first feeder through the second discharge pipe.

2. The material precision distribution system with a bidirectional feeding feeder as claimed in claim 1, characterized in that: The material diversion system also includes a first diversion hopper, a feed end of the first diversion hopper is connected to the first silo, and a feed port is formed between the first diversion hopper and the first silo; and a discharge end of the first diversion hopper is connected to the first feed pipe.

3. The material precision distribution system with a bidirectional feeding feeder as claimed in claim 1, characterized in that: The material diversion system also includes a second diversion hopper, a feed end of the second diversion hopper is connected to the second silo, and a feed port is formed between the second diversion hopper and the second silo; and a discharge end of the second diversion hopper is connected to the second feed pipe.

4. The material precision distribution system with a bidirectional feeding feeder as claimed in claim 2, characterized in that: An elliptical feed port is formed between the first diversion hopper and the first silo.

5. The material precision distribution system with a bidirectional feeding feeder as claimed in claim 3, characterized in that: An elliptical feed port is formed between the second diversion hopper and the second silo.

6. The precise material distribution system with a bidirectional feeding feeder as claimed in claim 4, characterized in that: The first silo includes a hopper, and a feed end of the first diversion hopper is connected to the hopper of the first silo.

7. The precise material distribution system with a bidirectional feeding feeder as claimed in claim 5, characterized in that: The second silo includes a hopper, and a feed end of the second diversion hopper is connected to the hopper of the second silo.

8. The material precision distribution system with a bidirectional feeding feeder as claimed in claim 1, characterized in that: The first feeder includes a feed port and a discharge port, and the first feeder also includes a first diversion feed port arranged opposite to the discharge port arranged thereon, and the second discharge port of the two-way feeding feeder is connected to the first diversion feed port via the second discharge pipe, and the material entering from the first diversion feed port is directly discharged from the discharge port of the first feeder.

9. The material precision distribution system with a bidirectional feeding feeder according to claim 1 or 8, characterized in that: The second feeder includes a feed port and a discharge port, and the second feeder also includes a second diversion feed port arranged opposite to the discharge port arranged thereon. The first discharge port of the bidirectional feeding feeder is connected to the second diversion feed port via the first discharge pipe, and the material entering from the second diversion feed port is directly discharged from the discharge port of the second feeder.

10. The precise material distribution system with a bidirectional feeding feeder according to claim 1, characterized in that: The material conveyor is a belt conveyor, the material conveying component is a conveyor belt, and two belt rollers of the belt conveyor are respectively fixed on the two rotating shafts.

11. The precise material distribution system with a bidirectional feeding feeder according to claim 10, characterized in that: The belt conveyor is a belt conveyor.

12. The precise material distribution system with a bidirectional feeding feeder according to claim 10 or 11, characterized in that: The bidirectional feeding feeder also includes a chain cleaning device arranged directly below the conveying mechanism, the chain cleaning device includes two sets of sprockets located at the longitudinal ends of the chain cleaning device, chains used with the sprockets, and scrapers installed on the chains and moving with the chains, at least one of the two sets of sprockets is equipped with a driving motor connected to the sprocket shaft and capable of rotating in both directions; in the assembled state, the lower end of the scraper located at the lower part is close to or in contact with the bottom surface of the shell.

13. The precise material distribution system with a bidirectional feeding feeder according to claim 12, characterized in that: The two groups of sprockets are respectively equipped with corresponding driving motors capable of forward and reverse rotation.

14. The material precision distribution system with a bidirectional feeding feeder according to claim 1, characterized in that: The material conveyor is a scraper conveyor, the material conveying components are a chain and a plurality of scrapers fixed on the chain, and two groups of sprockets of the scraper conveyor are respectively fixed on the two rotating shafts.

15. The precise material distribution system with a bidirectional feeding feeder according to claim 1, characterized in that: The material is coal.

16. The precise material distribution system with a bidirectional feeding feeder according to claim 1, characterized in that: The shell is a segmented shell, comprising at least two shell segments arranged in sequence along the longitudinal direction, and opposite ends of two adjacent shell segments are provided with flanges and are connected to each other through the flanges.

17. The bidirectional feeding feeder according to claim 10, characterized in that: An anti-deviation device is provided at one longitudinal end or both longitudinal ends of the upper section of the conveyor belt of the belt conveyor, and the anti-deviation device includes two anti-deviation guide plates, and the two anti-deviation guide plates are respectively arranged on the lateral sides of the conveyor belt and fixedly installed relative to the shell; the anti-deviation guide plate includes a stop surface facing the lateral side end of the conveyor belt, and the stop surface is adjacent to the lateral side end of the conveyor belt to prevent the conveyor belt from lateral deviation.

18. The bidirectional feeding feeder according to claim 17, characterized in that: The cross section of the anti-deviation guide plate perpendicular to the longitudinal direction is C-shaped, including a middle web and wing plates located on the upper and lower sides of the middle web, and the inner surface of the middle web facing the conveyor belt is used as the stop surface.

19. The bidirectional feeding feeder according to claim 17 or 18, characterized in that: A cross section of the stop surface parallel to the surface of the conveyor belt is in an arcuate shape facing away from the conveyor belt.

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