Precise material distribution system with bidirectional feeding machine

Abstract

The utility model discloses an accurate material distribution system with a bidirectional feeding machine, 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 utility model relates to material distribution technical field especially is related to a material accurate distribution system with two -way feeding material feeding machine. BACKGROUND

[0002] The shunting distribution of coal has been more and more widely used in the field of power generation. CN221499872U discloses a traditional coal shunting 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 shunting coal feeder is arranged between the two coal distribution devices, which 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 end of the longitudinal direction of the shunting coal feeder, and the second coal inlet and the first coal outlet are located at the other end of the longitudinal direction of the shunting coal feeder. The first coal inlet is in communication with one coal bunker, and the second coal inlet is in communication with another coal bunker; the shunting coal feeder transports the coal received from the first coal inlet to the first coal outlet and discharges it from the first coal outlet, or the shunting coal feeder transports the coal received from the second coal inlet to the second coal outlet and discharges it from the second coal outlet. The shunting 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 shafts at the longitudinal ends respectively, the belt is sleeved on the two belt rollers, one of the two shafts is connected with a driving motor, and in operation, the driving motor realizes the bidirectional feeding of materials by rotating in the forward or reverse direction. In the case of driving by a single driving motor, when the driving motor rotates in one direction, the upper section of the belt is in a taut state, and when the driving motor rotates in the opposite direction, the upper section of the belt is in a relaxed state. There are many problems in the transmission of coal by the upper section of the belt in the relaxed state: accurate weighing of the conveyed materials cannot be realized, the weighing stability is poor, and accurate distribution of the amount of materials is difficult to realize; in addition, driving by a single driving motor has the problems of easy deviation of the belt and easy slipping of the belt.

[0004] The traditional scraper conveyor comprises two rotating shafts at the longitudinal two ends, chain wheels fixedly installed on the two rotating shafts respectively, a chain wrapped around the chain wheels, and a plurality of scrapers fixedly installed on the chain. One of the two rotating shafts is connected with a driving motor, and in operation, the driving motor rotates in the forward or reverse direction to realize the bidirectional feeding of the material. In the case of driving by a single driving motor, 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 slack state. When the lower chain in the slack state is used to convey the coal, the material on the bottom surface of the shell of the scraper conveyor cannot be reliably pushed, which causes 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 affect the conveying of the material, and in severe cases, the machine stops.

[0005] In order to solve the above problems, the traditional technology adopts a scheme of using two unidirectional feeding hoppers, and the two unidirectional feeding hoppers are arranged in a double-layer manner. However, such a scheme has many disadvantages: the occupied space is large, the installation space is limited; one feeding hopper is added, which greatly increases the cost and the maintenance workload; and the control is more complex.

[0006] Therefore, there is a demand in the industry for a material distribution system with further improved structure and performance. SUMMARY

[0007] The utility model aims at overcoming the defects of the traditional technology, and aims at providing a material precise distribution system with a bidirectional feeding hopper, which can effectively prevent the deviation and slipping of the conveying belt, realize the accurate weighing of the conveyed material and then realize the precise distribution of the material quantity, or effectively realize the reliable pushing of the material and prevent the accumulation and adhesion of the material on the bottom surface of the shell; reduce the installation occupied space, reduce the cost, and reduce the maintenance workload.

[0008] In order to achieve the above-mentioned purpose, according to the utility model, a material precise distribution system with a bidirectional feeding hopper is provided, 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 hopper and a first feeding hopper arranged below the first hopper, the second material distribution device comprises a second hopper and a second feeding hopper arranged below the second hopper;

[0009] The material distribution system comprises a bidirectional feeding hopper, and the bidirectional feeding hopper comprises a shell and a material conveyor;

[0010] The shell upper side is provided with longitudinally spaced first and second feed ports, and the shell lower side is provided with longitudinally spaced first and second discharge ports; 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.

[0011] 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.

[0012] The material conveyor comprises a conveying mechanism and a driving motor, the conveying mechanism is arranged in the shell, and the conveying mechanism comprises two rotating shafts located at both longitudinal ends of the conveying mechanism and a material conveying component sleeved on the periphery of the two rotating shafts.

[0013] The two driving motors are both reversible driving motors; each of the two driving motors is connected with one of the two rotating shafts and synchronously drives the corresponding rotating shaft in the same direction, so that the material conveying component rotates to convey the material.

[0014] The first feed port is communicated with the first hopper through a first feed pipe, and the second feed port is communicated with the second hopper through a second feed pipe; the first discharge port is communicated with the interior of the second feeding machine through a first discharge pipe, and the second discharge port is communicated with the interior of the first feeding machine through a second discharge pipe.

[0015] Preferably, the material distribution system further comprises a first distribution hopper, the feed end of the first distribution hopper is communicated with the first hopper to form a feed port between the first distribution hopper and the first hopper; and the discharge end of the first distribution hopper is communicated with the first feed pipe.

[0016] Preferably, the material distribution system further comprises a second distribution hopper, the feed end of the second distribution hopper is communicated with the second hopper to form a feed port between the second distribution hopper and the second hopper; and the discharge end of the second distribution hopper is communicated with the second feed pipe.

[0017] Preferably, an elliptical feed port is formed between the first distribution hopper and the first hopper.

[0018] Preferably, an elliptical feed port is formed between the second distribution hopper and the second hopper.

[0019] Preferably, the first hopper comprises a hopper, and the feed end of the first distribution hopper is communicated with the hopper of the first hopper.

[0020] Preferably, the second hopper is a bin, and the feed inlet of the second diverging hopper is in communication with the bin of the second hopper.

[0021] Preferably, the first feeder comprises a feed inlet and a discharge outlet, and the first feeder further comprises a first diverging feed inlet arranged opposite to the discharge outlet, and the second discharge outlet of the bidirectional feeding feeder is in communication with the first diverging feed inlet via the second discharge pipe, and the material entering from the first diverging feed inlet is directly discharged from the discharge outlet of the first feeder.

[0022] Preferably, the second feeder comprises a feed inlet and a discharge outlet, and the second feeder further comprises a second diverging feed inlet arranged opposite to the discharge outlet, and the first discharge outlet of the bidirectional feeding feeder is in communication with the second diverging feed inlet via the first discharge pipe, and the material entering from the second diverging feed inlet is directly discharged from the discharge outlet of the second feeder.

[0023] Preferably, the material conveyor is a belt conveyor, and the material conveying component is a conveying belt, and the two belt rollers of the belt conveyor are respectively fixed on the two rotating shafts.

[0024] Preferably, the belt conveyor is a belt conveyor.

[0025] Preferably, the bidirectional feeding feeder further comprises a chain cleaning device arranged directly below the conveying mechanism, the chain cleaning device comprises two groups of chain wheels located at the longitudinal ends of the chain cleaning device, a chain matched with the chain wheels, and a scraper installed on the chain and moving together with the chain, and at least one group of chain wheels in the two groups of chain wheels is provided with a reversible driving motor connected with the chain wheel shaft; in the assembled state, the lower end of the lower scraper is close to or contacts the bottom surface of the housing.

[0026] Preferably, each of the two groups of chain wheels is provided with a corresponding reversible driving motor.

[0027] Preferably, the material conveyor is a scraper conveyor, and the material conveying component is a chain and a plurality of scrapers fixed on the chain, and the two groups of chain wheels of the scraper conveyor are respectively fixed on the two rotating shafts.

[0028] Preferably, the material is coal.

[0029] Preferably, the housing is a sectional housing comprising at least two housing sections arranged in sequence along the longitudinal direction, and the opposite ends of adjacent two housing sections are provided with flanges and are connected with each other through the flanges.

[0030] Preferably, a deviation-preventing device is arranged at one or both longitudinal ends of the upper section of the conveyor belt of the belt conveyor, the deviation-preventing device comprising two deviation-preventing guide plates respectively arranged at the two lateral sides of the conveyor belt and fixedly mounted relative to the housing; the deviation-preventing guide plates comprise a stop surface facing the lateral end of the conveyor belt, the stop surface being adjacent to the lateral end of the conveyor belt to prevent the lateral deviation of the conveyor belt.

[0031] Preferably, the deviation-preventing guide plate has a C-shaped cross section perpendicular to the longitudinal direction, comprising a middle web and wing plates arranged on the upper and lower sides of the middle web, the inner surface of the middle web facing the conveyor belt serving as the stop surface.

[0032] Preferably, the stop surface has an arc shape facing away from the conveyor belt when the cross section of the stop surface is taken parallel to the surface of the conveyor belt.

[0033] The technical scheme of the present application realizes accurate weighing of the conveyed material, ensures stable weighing, realizes precise distribution of the material, prevents the deviation of the conveyor belt and solves the problem of slippage of the conveyor belt; or realizes reliable pushing of the material, prevents the accumulation of the material on the surface of the bottom of the housing. Compared with the scheme of using two double-layer unidirectional feeding machines, the present application greatly reduces the occupied space, reduces or is not limited by the installation space; compared with the scheme of using two double-layer unidirectional feeding machines, the technical scheme of the present application reduces one feeding machine, greatly reduces the cost, and reduces the maintenance workload; at the same time, the use of a single feeding machine makes the control easier. BRIEF DESCRIPTION OF DRAWINGS

[0034] The present application will be further described in detail below in combination with the drawings and embodiments, in which

[0035] Figure 1 is a perspective view illustrating the overall structure of the material precise distribution system with a bidirectional feeding machine according to the present application;

[0036] Figure 2 is Figure 1 the front view of the material precise distribution system with a bidirectional feeding machine shown in the figure;

[0037] Figure 3 is Figure 1 the right view of the material precise distribution system with a bidirectional feeding machine shown in the figure;

[0038] Figure 4 is Figure 1 the front view of the material precise distribution system with a bidirectional feeding machine shown in the figure;

[0039] Figure 5is a perspective view illustrating the overall structure of the bidirectional feeding feeder according to the first embodiment of the present application;

[0040] Figure 6 is Figure 5 a sectional view of the bidirectional feeding feeder shown in

[0041] Figure 7 is a perspective view of the chain type cleaning device;

[0042] Figure 8A is a view similar to Figure 6 illustrating the conveyor belt deviation preventing device;

[0043] Figure 8B is a partial perspective view illustrating the conveyor belt deviation preventing device;

[0044] Figure 8C is a sectional view of the conveyor belt deviation preventing device and its mounting structure taken along a surface parallel to the surface of the conveyor belt; and

[0045] Figure 9 is a view similar to Figure 6 illustrating a sectional view of the bidirectional feeding feeder according to the second embodiment of the present application. DETAILED DESCRIPTION

[0046] The material precise distribution system with bidirectional feeding feeder of the present application will be described in detail below in conjunction with the accompanying drawings and embodiments. Here, it should be pointed out that the embodiments of the present application are merely illustrative and are only used to explain the principle of the present application but not to limit the present application.

[0047] For the convenience of description, in the following description and other parts of the present application, the longitudinal direction refers to the length extension direction of the bidirectional feeding feeder, corresponding to the conveying direction of the material.

[0048] As shown in Figure 1 and Figure 2 , the material precise distribution system with bidirectional feeding feeder comprises a first material distribution device 10 and a second material distribution device 60 arranged adjacently, each of which comprises a material bin 101 and a feeder 102 arranged below the material bin 101.

[0049] The material bin 101 comprises a hopper 104, which is conical in shape and gradually decreases in diameter from top to bottom, with the lower end being a discharge port.

[0050] The feeder 102 is arranged below the corresponding material bin and is used to receive the material distributed by the material bin, and the feeder delivers the material to a downstream device such as a grinding machine. As Figure 3As shown, the feeder includes an inlet 105 and an outlet 106, the material from the bin 101 is input into the feeder via the inlet 105, and the feeder delivers the received material to downstream devices via the outlet 106. The feeder can adopt a conventional belt conveyor or a scraper conveyor, etc., the structure of which is well known to those skilled in the art, and the description thereof is omitted here.

[0051] According to the technical scheme of the utility model, the two material distribution devices are designed to supply material to the feeders of the adjacent material distribution devices in addition to supplying material to the feeders of themselves. For this purpose, a material distribution system 109 is arranged between the first material distribution device 10 and the second material distribution device 60, please refer to Figure 1 . The material distribution system 109 includes a first distribution hopper 110, a second distribution hopper 210, a bidirectional feeding feeder 100, a first feeding pipe 15, a second feeding pipe 17, a first discharging pipe 19, and a second discharging pipe 21.

[0052] Please refer to Figure 1 , the first distribution hopper 110 and the second distribution hopper 210 include a bin connecting part 113 at the upper part and a hopper part 114 at the lower part, the hopper part 114 gradually decreases in diameter from top to bottom, and the lower end is an outlet. The first distribution hopper 110 and the second distribution hopper 210 are respectively connected with the bin 101 of the first material distribution device 10 and the second material distribution device 60 through the bin connecting part 113. In the illustrated embodiment, the bin connecting part 113 is connected with the sidewall of the hopper 104 of the bin, so that the first distribution hopper 110 and the second distribution hopper 210 are respectively connected with the hopper 104 of the corresponding bin, and the first distribution hopper 110 and the second distribution hopper 210 form a feeding port 120 with the hopper 104 of the corresponding bin, please refer to Figure 4 . As a preferred technical scheme, the feeding port formed between the first distribution hopper and the first bin is oval, and the feeding port formed between the second distribution hopper and the second bin is also oval. The oval feeding port is beneficial to the flow of material and reduces or avoids the adhesion of material on the inner wall of the hopper.

[0053] Please refer to Figures 1-3The bidirectional feeding feeder 100 is arranged below the first diverging hopper 110 and the second diverging hopper 210 and is used to receive the material distributed by the first diverging hopper 110 or the second diverging hopper 210. The second feeding pipe 17 is connected with the material outlet of the second diverging hopper 210, the second discharging pipe 21 is connected with the first diverging feeding inlet 117 of the feeder of the first material distribution device 10, the bidirectional feeding feeder transports the material received from the second material distribution device 60 via the second feeding pipe 17 to the first diverging feeding inlet 117 of the feeder of the first material distribution device 10 via the second discharging pipe 21, the first diverging feeding inlet 117 is arranged opposite to the material outlet 106 of the feeder of the first material distribution device, and the material entering the diverging feeding inlet 117 is directly discharged from the material outlet 106 of the feeder.

[0054] The first feeding pipe 15 is connected with the material outlet of the first diverging hopper 110, the first discharging pipe 19 is connected with the second diverging feeding inlet 217 of the feeder of the second material distribution device 60, the bidirectional feeding feeder transports the material received from the first material distribution device 10 via the first feeding pipe 15 to the second diverging feeding inlet 217 of the feeder of the second material distribution device 60 via the first discharging pipe 19, the second diverging feeding inlet 217 is arranged opposite to the material outlet 106 of the feeder of the second material distribution device, and the material entering the diverging feeding inlet 217 is directly discharged from the material outlet 106 of the feeder.

[0055] As shown in Figure 1 The first feeding pipe 15, the second feeding pipe 17, the first discharging pipe 19 and the second discharging pipe 21 can be respectively provided with the shutter door 16, the shutter door 18, the shutter door 20 and the shutter door 22 to control the communication and closing of the corresponding pipes.

[0056] By adopting the technical scheme, the cross diverging feeding between the first material distribution device and the second material distribution device can be realized. Taking the material as the coal and the coal-fired power plant as an example, assuming that the high-calorific-value high-quality coal is stored in the second material distribution device 60 and the low-calorific-value low-quality coal is stored in the first material distribution device 10, the cross diverging feeding of the high-quality coal and the low-quality coal can be realized in the technical scheme of the cross feeding between the two material distribution devices to adapt to different power generation conditions.

[0057] In the above technical scheme, the second discharging pipe 21 is arranged in communication with the first diverging feeding inlet 117 of the feeder of the first material distribution device 10, but the utility model is not limited thereto. The second discharging pipe 21 can also be arranged in communication with the pipe 301 (see Figure 1) communication; similarly, the first discharge pipe 19 can also be arranged in communication with the pipe 302 (see Figure 1 ) of the hopper 101 of the second material dispensing device 60 and the inlet 105 of the corresponding feeder.

[0058] The bidirectional feeding feeder of the present application will be described below in conjunction with Figures 5-9 the accompanying drawings.

[0059] Firstly, refer to Figure 5 and Figure 6 , wherein, Figure 5 is a perspective view of the bidirectional feeding feeder according to the first embodiment of the present application, Figure 6 is Figure 5 a sectional view of the bidirectional feeding feeder shown in FIG. 1, the bidirectional feeding feeder of the present application is used to convey materials in the left and right directions shown in the figure.

[0060] As shown in Figure 5 and Figure 6 , the bidirectional feeding feeder 100 comprises a housing 1 and a material conveyor 2, the housing 1 is provided with a first inlet 11 and a second inlet 12 spaced apart along the longitudinal direction of the bidirectional feeding feeder on the upper side of the housing 1, and a first discharge port 13 and a second discharge port 14 spaced apart along the longitudinal direction on the lower side of the housing 1, wherein the first inlet 11 and the second discharge port 14 are located at one longitudinal end (right side) of the bidirectional feeding feeder, and the second inlet 12 and the first discharge port 13 are located at the other longitudinal end (left side) of the bidirectional feeding feeder. Figure 5 The first inlet 11 or the second inlet 12 is used to receive materials such as hopper dispensing, the received materials are conveyed by the material conveyor 2 arranged in the bidirectional feeding feeder to the first discharge port 13 or the second discharge port 14 and discharged from the first discharge port 13 or the second discharge port 14. Figure 5

[0061] The housing can be a monolithic 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, the opposite ends of the adjacent two housing segments are provided with flanges and are connected to each other by the flanges.

[0062] The material conveyor 2 is used to realize bidirectional feeding, specifically, refer to Figure 6 ​The material conveyor 2 will convey the material received from the first inlet 11 to the first outlet 13 and discharge the material via the first outlet 13, or the material conveyor 2 will convey the material received from the second inlet 12 to the second outlet 14 and discharge the material via the second outlet 14. By way of illustration, the bidirectional feeding feeder 1 of the present application can be arranged below a coal bunker, for example, the coal bunker includes a first coal bunker and a second coal bunker, the first inlet 11 is used to receive the coal material distributed by the first coal bunker, and the second inlet 12 is used to receive the coal material distributed by the second coal bunker. As a preferred solution, the bidirectional feeding feeder can be provided with a weighing device for weighing the received material, the weighing device is a device commonly used in the art and is well known to those skilled in the art, and the description thereof is omitted for the sake of brevity.

[0063] With reference to the accompanying drawings Figure 5 The first inlet 11 can be communicated with a first material bin such as a coal bunker through a first inlet pipe 15, a shutter door 16 is arranged on the first inlet pipe 15 to control the communication and closing of the first inlet pipe; similarly, the second inlet 12 can be communicated with a second material bin such as a coal bunker through a second inlet pipe 17, a shutter door 18 is arranged on the second inlet pipe 17 to control the communication and closing of the second inlet pipe. The first outlet 13 can be connected with a downstream device through a first outlet pipe 19, a shutter door 20 is arranged on the first outlet pipe 19 to control the communication and closing of the first outlet pipe; similarly, the second outlet 14 can be connected with a downstream device through a second outlet pipe 21, a shutter door 22 is arranged on the second outlet pipe 21 to control the communication and closing of the second outlet pipe. The shutter door can adopt a conventional shutter door, the structure of which is well known to those skilled in the art, and the description thereof is omitted here.

[0064] The material conveyor 2 will convey the material received from the first inlet 11 to the first outlet 13 and discharge the material via the first outlet 13, or the material conveyor 2 will convey the material received from the second inlet 12 to the second outlet 14 and discharge the material via the second outlet 14. By way of illustration, the bidirectional feeding feeder 1 of the present application can be arranged below a coal bunker, for example, the coal bunker includes a first coal bunker and a second coal bunker, the first inlet 11 is used to receive the coal material distributed by the first coal bunker, and the second inlet 12 is used to receive the coal material distributed by the second coal bunker. As a preferred solution, the bidirectional feeding feeder can be provided with a weighing device for weighing the received material, the weighing device is a device commonly used in the art and is well known to those skilled in the art, and the description thereof is omitted for the sake of brevity. Figures 5-7 The material conveyor 2 will convey the material received from the first inlet 11 to the first outlet 13 and discharge the material via the first outlet 13, or the material conveyor 2 will convey the material received from the second inlet 12 to the second outlet 14 and discharge the material via the second outlet 14. By way of illustration, the bidirectional feeding feeder 1 of the present application can be arranged below a coal bunker, for example, the coal bunker includes a first coal bunker and a second coal bunker, the first inlet 11 is used to receive the coal material distributed by the first coal bunker, and the second inlet 12 is used to receive the coal material distributed by the second coal bunker. As a preferred solution, the bidirectional feeding feeder can be provided with a weighing device for weighing the received material, the weighing device is a device commonly used in the art and is well known to those skilled in the art, and the description thereof is omitted for the sake of brevity. Figures 5-7As shown, the material conveyor 2 is in the form of a belt conveyor, which is a commonly used mechanism in the art 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 and includes two rotating shafts (not shown in the figure) at the longitudinal ends of the conveying mechanism and a conveying belt 82 serving as a material conveying component and sleeved on the periphery of the two rotating shafts. The conveying belt 82 is sleeved on belt rollers 23 fixed on the two rotating shafts respectively, and the rotating shafts are driven to rotate by the driving motor 25. A speed change mechanism 26 can be arranged between the rotating shafts and the driving motor 25, and the output end of the speed change mechanism is connected with the rotating shafts. The speed change mechanism can be various and is well known to those skilled in the art, and the description thereof is omitted for the sake of simplicity. According to the technical scheme of the present application, the belt conveyor is provided with two driving motors 25 arranged at the longitudinal ends of the belt conveyor, i.e., the two driving motors 25 are respectively connected with one of the two rotating shafts at the longitudinal front and rear ends, and each driving motor 25 is a reversible driving motor. In actual operation, the two driving motors 25 synchronously drive the corresponding rotating shafts in the same direction, so as to make the conveying belt rotate to convey the material.

[0065] As a preferred scheme, the belt conveyor is a belt conveyor, and the conveying belt is a belt.

[0066] As a preferred scheme, the anti-deviation device can be arranged at one longitudinal end or both longitudinal ends of the upper section of the conveying belt of the belt conveyor. Hereinafter, a fixed installation example of the anti-deviation device will be described with reference to Figures 8A-8C to the drawing. Figure 8A As shown, the belt conveyor is provided with anti-deviation devices 70 at the longitudinal ends of the upper section of the conveying belt. Please refer to Figure 8B The anti-deviation device includes two anti-deviation guide plates 71 arranged at the two lateral sides of the conveying belt respectively.

[0067] Please refer to Figure 8B The anti-deviation guide plate 71 is C-shaped in the cross section perpendicular to the longitudinal direction, and includes a middle web 72 and wing plates 73 at the upper and lower sides of the middle web. The inner surface of the middle web facing the conveying belt serves as a stop surface, which is adjacent to the lateral end of the conveying belt to prevent the lateral deviation of the conveying belt.

[0068] As a preferred scheme, as shown in Figure 8C the cross section of the stop surface parallel to the surface of the conveying belt is arc-shaped and faces away from the conveying belt.

[0069] Hereinafter, a fixed installation example of the anti-deviation guide plate will be described with reference to Figure 8C As shown in Figure 8CAs shown, the anti-deviation guide plate 71 is welded with a nut 75, and the housing wall of the housing 1 is formed with a threaded hole 78. During assembly, the screw is rotated in the threaded hole 78, one end of the screw is fixed with the nut 75, and the other end is fixed on the housing wall of the housing 1 through the nut 77, so as to fixedly install the anti-deviation guide plate on the housing 1. It should be noted that the fixed installation of the anti-deviation guide plate 71 relative to the housing 1 is not limited to the specific manner described above, but any fixing manner known to those skilled in the art can be used, and the essence of the utility model lies in that the anti-deviation guide plate 71 is fixed relative to the housing to prevent the lateral deviation of the conveying belt.

[0070] In addition, the structure of the anti-deviation guide plate 71 is not limited to the specific form described above, and the essence of the anti-deviation guide plate lies in that it includes a stop surface facing the lateral end of the conveying belt, and the stop surface is adjacent to the lateral end of the conveying belt to prevent the lateral deviation of the conveying belt.

[0071] During the operation of the bidirectional feeding feeder, in the case of using a belt conveyor, materials such as coal may fall from the surface of the conveying belt to the bottom surface of the housing 1 and accumulate, which may affect the conveying of the materials if not removed in time, and may even cause shutdown. Therefore, as a preferred technical solution, the bidirectional feeding feeder of the first embodiment of the utility model is provided with a cleaning device for removing the materials falling and accumulating on the bottom surface of the housing 1.

[0072] Please refer to Figure 6 and Figure 7 The cleaning device of the utility model 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 groups of sprockets 56 fixed on the sprocket shaft 32 at the longitudinal ends of the chain cleaning device, a chain 27 matched with the sprockets, and a plurality of scrapers 28 installed on the chain and moving with the chain. In the assembled state, the lower end of the lower scraper 28 is close to or in contact with the bottom surface 30 of the housing, so as to push the materials on the bottom of the housing to the first discharge port 13 or the second discharge port 14. The sprocket 56 is driven by the driving motor 29, and the driving motor 29 is a driving motor that can rotate in both forward and reverse directions, and the driving motor is connected with the sprocket shaft 32 through a speed change mechanism 31. According to the utility model, one of the two groups of sprockets can be provided with a driving motor, or both groups of sprockets can be provided with driving motors, Figure 6 and Figure 7 The latter technical solution is illustrated in

[0073] In the above-described embodiment of the chain-type cleaning device 3, the chain-type cleaning device is provided with two sets of sprockets 56 at the longitudinal two ends and a chain 27 wound around the sprockets, but the present application is not limited thereto. The chain-type cleaning device can also be provided with two chains or multiple chains, in which case a corresponding number of sprockets are mounted on each sprocket shaft 32. In the present application, each set of sprockets means one sprocket, two sprockets or multiple sprockets.

[0074] The operation of the bidirectional feeding feeder of the present application will be described below by taking the reception of material from the first feeding port 11 as an example.

[0075] Please refer to Figure 5 and Figure 6 During operation, the shutter doors 16 and 20 are opened, so that the first feeding port 11 is in communication with a material source such as a coal bunker via the first feeding pipe 15, and the first discharge port 13 is connected to a downstream device via the first discharge pipe 19; at the same time, the shutter doors 18 and 22 are closed. The material from the material source flows through the first feeding pipe 15 and enters the bidirectional feeding feeder via the first feeding port 11; at the same time, the two drive motors 25 of the belt conveyor are synchronously operated in the same direction, so that the upper section of the conveyor belt moves from right to left in Figure 5 and Figure 6 In the scheme shown in Figure 6 , the two drive motors 25 rotate counterclockwise, thereby driving the upper section of the conveyor belt to move from right to left. The material entering from the first feeding port 11 falls on the conveyor belt and is driven by the conveyor belt to move to the left, and then flows into the first discharge pipe 19 via the first discharge port 13 and flows to the downstream device. In order to remove the material falling on the bottom surface of the housing from the conveyor belt, the chain-type cleaning device is started at the same time as the belt conveyor, and the drive motor 29 of the chain-type cleaning device rotates clockwise; during the operation of the chain-type cleaning device, the lower scraper 28 pushes the material falling on the bottom surface of the housing forward (left in the figure) and pushes the material into the first discharge port 13.

[0076] By adopting the technical scheme of the present application, since the belt conveyor is provided with two drive motors for driving the two shafts at the longitudinal two ends of the conveying mechanism, the upper section of the conveyor belt used for carrying and conveying the material is always in a taut state, regardless of the direction in which the material is conveyed, so that: 1. the conveyor belt is less likely to deviate and the problem of belt slip is solved; 2. accurate weighing of the conveyed material can be achieved, the weighing is stable, and accurate distribution of the amount of material is achieved; 3. compared with the scheme of using two double-layer unidirectional feeding feeders, the occupied space is greatly reduced, and the installation space is reduced or not limited; 4. compared with the scheme of using two double-layer unidirectional feeding feeders, one feeding feeder is reduced, the cost is greatly reduced, and the maintenance workload is reduced; 5. the use of a single feeder makes control easier.

[0077] 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 application is not limited thereto, and the material conveyor can adopt other forms, such as a scraper conveyor or a screw conveyor, etc. In the case of using a screw conveyor, the cleaning device can be omitted, and the screw conveying rod of the screw conveyor can be driven by a single driving motor that can rotate in both forward and reverse directions or by double driving motors, and in the case of using double driving motors, the two driving motors are connected to the longitudinal ends of the screw conveying rod through speed change mechanisms. The structure of the screw conveyor itself is well known to those skilled in the art, and for the sake of brevity, the description thereof is omitted.

[0078] The second embodiment of the bidirectional feeding feeder according to the present application will be described below. Figure 9 The second embodiment of the bidirectional feeding feeder according to the present application will be described below. Figure 9 The overall structure of the bidirectional feeding feeder shown in Figure 6 is substantially the same as that of the first embodiment shown in , and the difference lies in the material conveyor, specifically in the conveying mechanism of the material conveyor. Therefore, the same components are indicated by the same reference numerals and the description thereof is omitted, and only the differences between the two will be described below.

[0079] Figure 9 is a view similar to Figure 6 , illustrating a bidirectional feeding feeder according to the present application using a scraper conveyor, and in the case of using a scraper conveyor, the cleaning device is omitted. The scraper conveyor is a commonly used mechanism in the art and is well known to those skilled in the art, and it includes a conveying mechanism and a driving motor. The conveying mechanism is arranged in the housing 1 and includes two rotating shafts 50 at the longitudinal ends of the conveying mechanism and a material conveying component sleeved around the two rotating shafts. The material conveying component includes a chain 51 and a plurality of scrapers 52 fixedly installed on the chain 51, the chain 51 is sleeved around two groups of sprockets 53 fixedly installed on the two rotating shafts, respectively, and the rotating shafts are driven to rotate by the driving motor, and a speed change mechanism can be arranged between the rotating shafts and the driving motor, and the output end of the speed change mechanism is connected to the rotating shafts 50.

[0080] It should be noted that, as described above in connection 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, and in this case, a corresponding number of sprockets are installed on each rotating shaft 50. In this application, each group of sprockets means one sprocket, two sprockets or multiple sprockets.

[0081] According to the technical scheme of the second embodiment of the utility model, the scraper conveyor adopts double drive motors, two rotating shafts 50 (namely chain wheel shafts) at the longitudinal front and back ends are respectively provided with self drive motors 38, are arranged at the longitudinal two ends of the scraper conveyor, and each drive motor is a reversible drive motor.

[0082] According to the technical scheme of the second embodiment of the utility model, the scraper conveyor is provided with two drive motors for synchronously driving the two rotating shafts at the longitudinal two ends of the conveying mechanism, so that the lower part of the chain used for pushing the materials is always in a taut state, and the reliable pushing of the materials can be realized, the materials are prevented from accumulating and adhering to the bottom surface of the shell, the occupied space is greatly reduced compared with the scheme of using two double-layer unidirectional feeding machines, the maintenance workload is reduced, and the control is easier.

[0083] The utility model has been described above with reference to the specific embodiments in conjunction with the drawings, but this is only for the purpose of illustration, and the utility model is not limited to this. Therefore, it is obvious for 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 as belonging to the category of the utility model, and the scope of the utility model is defined by the technical scheme claimed and its equivalent schemes.

Claims

1. A material precise dispensing system with a bidirectional feeding feeder, comprising a first material dispensing device, a second material dispensing device and a material distribution system, the first material dispensing device comprising a first hopper and a first feeder arranged below the first hopper, the second material dispensing device comprising a second hopper and a second feeder arranged below the second hopper; characterized in that the material distribution system comprises a bidirectional feeding feeder, the bidirectional feeding feeder comprising a housing and a material conveyor; the housing is provided with a first feeding port and a second feeding port spaced apart in the longitudinal direction on the upper side of the housing, and a first discharging port and a second discharging port spaced apart in the longitudinal direction on the lower side of the housing; the first feeding port and the second discharging port are located at one longitudinal end of the bidirectional feeding feeder, and the second feeding port and the first discharging 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 feeding port to the first discharging port and discharge it through the first discharging port, and to convey the material received from the second feeding port to the second discharging port and discharge it through the second discharging port; the material conveyor comprises a conveying mechanism and a driving motor, the conveying mechanism is arranged in the housing, and the conveying mechanism comprises two rotating shafts at the two longitudinal ends of the conveying mechanism and a material conveying component sleeved on the periphery of the two rotating shafts; wherein the material conveyor is provided with two driving motors, both of which are reversible driving motors; each of the two driving motors is connected with one of the two rotating shafts and synchronously drives the corresponding rotating shaft in the same direction, so that the material conveying component rotates to convey the material; wherein the first feeding port is communicated with the first hopper through a first feeding pipe, the second feeding port is communicated with the second hopper through a second feeding pipe, the first discharging port is communicated with the interior of the second feeder through a first discharging pipe, and the second discharging port is communicated with the interior of the first feeder through a second discharging pipe. The material distribution system further comprises a first distribution hopper, the feeding end of the first distribution hopper is communicated with the first hopper, and a feeding port is formed between the first distribution hopper and the first hopper; the discharging end of the first distribution hopper is communicated with the first feeding pipe. The material distribution system further comprises a second distribution hopper, the feeding end of the second distribution hopper is communicated with the second hopper, and a feeding port is formed between the second distribution hopper and the second hopper; the discharging end of the second distribution hopper is communicated with the second feeding pipe. An oval feeding port is formed between the first distribution hopper and the first hopper. An oval feeding port is formed between the second distribution hopper and the second hopper. The first hopper comprises a hopper, and the feeding end of the first distribution hopper is communicated with the hopper of the first hopper. The second hopper comprises a hopper, and the feeding end of the second distribution hopper is communicated with the hopper of the second hopper.

2. The precise material dispensing system with a bidirectional feed feeder of claim 1, wherein, ​ 3. The precise material dispensing system with a bidirectional material feeding feeder of claim 1, wherein, ​ 4. The precise material dispensing system with a bidirectional material feeding feeder of claim 2, wherein, ​ 5. The precise material dispensing system with a bidirectional material feeding feeder of claim 3, wherein, ​ 6. The precise material dispensing system with a bidirectional material feeding feeder of claim 4, wherein, ​ 7. The precise material dispensing system with a bidirectional material feeding feeder of claim 5, wherein, ​ 8. The precise material dispensing system with a bidirectional feed feeder of claim 1, wherein, The first feeder comprises an inlet and an outlet, and further comprises a first shunt inlet arranged opposite to the outlet, and the second outlet of the bidirectional feeding feeder is communicated with the first shunt inlet via the second outlet pipe, and the material entering from the first shunt inlet is directly discharged from the outlet of the first feeder.

9. The precise material dispensing system with a bidirectional feed feeder of claim 1 or 8, wherein, The second feeder comprises an inlet and an outlet, and further comprises a second shunt inlet arranged opposite to the outlet, and the first outlet of the bidirectional feeding feeder is communicated with the second shunt inlet via the first outlet pipe, and the material entering from the second shunt inlet is directly discharged from the outlet of the second feeder.

10. The precise material dispensing system with a bidirectional feed feeder of claim 1, wherein, The material conveyor is a belt conveyor, and the material conveying component is a conveying belt, and the two belt rollers of the belt conveyor are fixed on the two rotating shafts respectively.

11. The precise material dispensing system with a bidirectional feed feeder of claim 10, wherein, The belt conveyor is a belt conveyor.

12. The precise material dispensing system with a bidirectional feed feeder of claim 10 or 11, wherein, The bidirectional feeding feeder further comprises a chain cleaning device arranged directly below the conveying mechanism, the chain cleaning device comprises two groups of chain wheels located at the longitudinal ends of the chain cleaning device, a chain matched with the chain wheels, and a scraper installed on the chain and moving together with the chain, and at least one group of chain wheels in the two groups of chain wheels is provided with a reversible driving motor connected with the chain wheel shaft; in the assembled state, the lower end of the lower scraper is close to or contacts the bottom surface of the shell.

13. The precise material dispensing system with a bi-directional feed feeder of claim 12, wherein, The two groups of chain wheels are respectively provided with corresponding reversible driving motors.

14. The precise material dispensing system with a bi-directional material feeding feeder of claim 1, wherein, The material conveyor is a scraper conveyor, the material conveying component is a chain and a plurality of scrapers fixed on the chain, and the two groups of chain wheels of the scraper conveyor are fixed on the two rotating shafts respectively.

15. The precise material dispensing system with a bidirectional material feeding feeder of claim 1, wherein, The material is coal.

16. The precise material dispensing system with a bi-directional material feeding feeder of claim 1, wherein, The shell is a sectional shell comprising at least two shell sections arranged in sequence along the longitudinal direction, and the opposite ends of the adjacent two shell sections are provided with flanges and are connected with each other through the flanges.

17. The precise material dispensing system with a bi-directional material feeding feeder of claim 10, wherein, The longitudinal one end or both ends of the upper section of the conveying belt of the belt conveyor are provided with a deviation preventing device, the deviation preventing device comprises two deviation preventing guide plates, and the two deviation preventing guide plates are arranged on the two lateral sides of the conveying belt and are fixedly installed relative to the shell; the deviation preventing guide plate comprises a stop surface facing the lateral end of the conveying belt, and the stop surface is adjacent to the lateral end of the conveying belt to prevent the lateral deviation of the conveying belt.

18. The precise material dispensing system with a bi-directional feed feeder of claim 17, wherein, The deviation preventing guide plate is C-shaped in the transverse cross section perpendicular to the longitudinal direction, and comprises a middle web plate and wing plates located on the upper and lower sides of the middle web plate, and the inner surface of the middle web plate facing the conveying belt serves as the stop surface.

19. The precise material dispensing system with a bidirectional feed feeder of claim 17 or 18, wherein, The stop surface is arc-shaped and faces away from the conveying belt in the cross section parallel to the surface of the conveying belt.

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