Material conveying device

Abstract

The utility model discloses a material conveying device which comprises a buffering stock bin, a material conveying device, a material conveying device, a material conveying device, a material conveying device and a material conveying device, and the buffering stock bin is used for containing materials and is provided with a discharging opening for discharging the materials; the gate is movably arranged at the discharge port; and the control piece is electrically connected with the gate so as to control the gate to close the discharge port when the preset amount of materials are discharged from the discharge port. According to the utility model, the buffer bin and the gate are arranged, the action of the gate is controlled through the control piece, and the gate is controlled to close the discharge port when the discharge port discharges the preset quantity of materials, so that the material quantity is controlled, the excessive fluctuation of the flue gas quantity is avoided, and furnace condition control and field environmental protection are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of material transportation, and in particular to a material transportation device. Background Art

[0002] In the related art, during the process of shaft furnace smelting materials, the transportation belt directly discharges the materials into the furnace, resulting in large fluctuations in the flue gas volume. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a material transportation device, which can avoid excessive fluctuations in the flue gas volume and is beneficial to furnace condition control and on-site environmental protection.

[0004] A material transportation device according to an embodiment of the utility model includes: a buffer bin for accommodating materials, the buffer bin having a discharge port for discharging the materials; a gate movably provided at the discharge port; and a control member electrically connected to the gate to control the gate to close the discharge port when a preset amount of the materials is discharged from the discharge port.

[0005] For the material transportation device according to the embodiment of the utility model, by providing a buffer bin and a gate, and controlling the action of the gate through a control member, when a preset amount of materials is discharged from the discharge port, the gate is controlled to close the discharge port, thereby controlling the amount of materials and avoiding excessive fluctuations in the flue gas volume, which is beneficial to furnace condition control and on-site environmental protection.

[0006] In some embodiments, a track member is provided on the buffer bin, the track member extends in the height direction, and the gate is movably connected to the track member.

[0007] In some embodiments, the material transportation device further includes: a transportation device provided below the buffer bin for transporting the materials, and the distance between the transportation device and the gate is L1, where 100mm ≤ L1 ≤ 400mm.

[0008] In some embodiments, the material transportation device further includes a detection member electrically connected to the control member, the detection member is used to detect the amount of the materials discharged from the discharge port, and transmit an electrical signal including the amount information to the control member.

[0009] In some embodiments, the material transportation device further includes a transportation device provided below the buffer bin for transporting the materials, the detection member is provided on the transportation device, and the detection member is configured as a weight detection member to detect the weight of the materials.

[0010] In some embodiments, the conveying device includes: a conveying frame; a conveying belt movably disposed on the conveying frame; a driving pulley connected to the conveying belt to drive the conveying belt to move; wherein, the weight detection member is disposed on the conveying frame, and the distance between the weight detection member and the driving pulley is L2, and 750 cm ≤ L2.

[0011] In some embodiments, the control member is electrically connected to the driving pulley to control the speed of the conveying belt according to the electrical signal.

[0012] In some embodiments, the speed of the conveying belt is V, and V ≤ 2 m / s.

[0013] In some embodiments, a detachable bar gate is provided in the buffer bin, and the bar gate is disposed upstream of the gate.

[0014] In some embodiments, a vibrator is further provided on the buffer bin, there are a plurality of the vibrators, and the plurality of vibrators are disposed on opposite sides of the buffer bin; and / or, a sealing cover is further provided above the buffer bin, the buffer bin is provided with an inlet, the sealing cover surrounds the inlet, and an observation hole is provided on the sealing cover.

[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a front view of the material conveying device in an embodiment of the present utility model;

[0018] Figure 2 is a side view of the material conveying device in an embodiment of the present utility model.

[0019] Reference numerals:

[0020] 100, material conveying device;

[0021] 1, buffer bin; 2, bar gate; 3, combined enclosure; 4, conveying belt; 5, driving pulley; 6, detection member; 7, handwheel; 8, lead screw; 9, sealing cover; 10, observation hole; 11, driving motor; 12, gate; 13, vibrator; 14, track member; 15, discharge port; 45, conveying device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0024] In addition, features defined with "first", "second" may explicitly or implicitly include one or more of such features, which are used to distinguish and describe features, without order or importance.

[0025] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] The material conveying device 100 of the embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0028] Referring to Figure 1 、 Figure 2 According to an embodiment of the present utility model, a material conveying device 100 includes: a buffer bin 1, a gate 12 and a control member.

[0029] The buffer bin 1 is used for accommodating materials, and the buffer bin 1 has a discharge port 15 for discharging materials. The gate 12 is movably arranged at the discharge port 15. The control member is electrically connected to the gate 12 to control the gate 12 to close the discharge port 15 when a preset amount of materials is discharged from the discharge port 15.

[0030] Among them, the material can be one or more of iron ore, coke, and solvent. The solvent can be limestone or dolomite, which is used to remove impurities in the iron ore. The material in the buffer bin 1 can be transported by an external conveyor belt or reserved by itself.

[0031] In the related art, during the process of shaft furnace smelting materials, the conveyor belt directly puts the materials into the furnace, resulting in large fluctuations in the flue gas volume.

[0032] Specifically, in the related art, the materials are usually made into spherical particles before being put into the furnace. Due to the fixed Hertz shaking of the granulator, when the materials fall along the edge of the disk, the material quantity is large and small, the material quantity on the conveyor belt is uneven, the material quantity directly put into the furnace fluctuates greatly, resulting in large fluctuations in the flue gas volume, and the materials participating in the reaction fluctuate greatly, which is not conducive to furnace condition control and on-site environmental protection.

[0033] In the embodiment of the present utility model, a buffer bin 1 is provided. The buffer bin 1 is used to accommodate materials. A gate 12 that can be opened and closed is provided at the discharge port 15 of the buffer bin 1. The control member controls the action of the gate 12 to control the discharge quantity of the discharge port 15, and closes the discharge port 15 when the materials discharged from the discharge port 15 reach a preset quantity, thereby controlling the material quantity, avoiding excessive fluctuations in the flue gas volume, and being conducive to furnace condition control and on-site environmental protection.

[0034] Among them, the preset quantity is a parameter set in advance, which can be set artificially in advance, and the preset quantity is set according to the smelting requirements. The preset quantity can be based on the weight reference standard or the volume reference standard.

[0035] According to the material conveying device of the embodiment of the present utility model, by providing the buffer bin 1 and the gate 12, and controlling the action of the gate 12 through the control member, when the discharge port 15 discharges a preset quantity of materials, the gate 12 is controlled to close the discharge port 15, thereby controlling the material quantity, avoiding excessive fluctuations in the flue gas volume, and being conducive to furnace condition control and on-site environmental protection.

[0036] In some specific embodiments, the material is configured as spherical particles, which is convenient for use.

[0037] Refer to Figure 2 , in some embodiments, a track member 14 is provided on the buffer bin 1. The track member 14 extends in the height direction, and the gate 12 is movably connected to the track member 14.

[0038] Among them, the track member 14 is provided on the buffer bin 1. The track member 14 extending in the height direction enables the gate 12 to move up and down, thereby adjusting the height of the gate 12. When the materials below the gate 12 are piled up relatively high, the gate 12 can make the height of the material pile uniform and neat.

[0039] In the above solution, by setting the track member 14, the gate 12 is moved up and down by using the track member 14, so that the gate 12 can adapt to materials of different sizes, thereby improving the scope of application.

[0040] For example, this week the material charged into the furnace has a high copper content and a small stockpile height, so the gate 12 is lowered; next week the material charged into the furnace has a low copper content and a large stockpile height, so the gate 12 is raised. Or, sometimes the processing material quantity is 140 tons, and sometimes it is 130 tons, and the height of the gate 12 is adjusted.

[0041] Specifically, the gate 12 is connected to a lead screw 8, and the lead screw 8 is connected to a handwheel 7. During normal production, the handwheel 7 is manually adjusted to drive the lead screw 8 to move the gate plate up and down.

[0042] Refer to Figure 1 、 Figure 2 In some embodiments, the material conveying device 100 further includes: a conveying device 45, which is arranged below the buffer bin 1. The conveying device 45 is used for conveying materials. The distance between the conveying device 45 and the gate 12 is L1, and 100 mm ≤ L1 ≤ 400 mm.

[0043] Among them, the conveying device 45 includes a conveyor belt 4, and the conveyor belt 4 is used to convey materials. The conveying device 45 is located below the buffer bin 1, and the materials discharged from the discharge port 15 fall onto the conveying device 45. When the gate 12 closes the discharge port 15, the stockpile height can be made uniform and neat.

[0044] In the above solution, by setting the distance L1 between the conveying device 45 and the gate 12 within the range of 100 mm to 400 mm, the stockpile height of the materials is within a certain range, thereby facilitating the management of the quantity of materials, avoiding damage to the conveying device 45, and improving safety.

[0045] For example, the distance L1 between the conveying device 45 and the gate 12 is 100 mm; or, the distance L1 between the conveying device 45 and the gate 12 is 200 mm; or, the distance L1 between the conveying device 45 and the gate 12 is 300 mm; or, the distance L1 between the conveying device 45 and the gate 12 is 400 mm.

[0046] Refer to Figure 1 In some embodiments, the material conveying device 100 further includes a detection member 6. The detection member 6 is electrically connected to a control member. The detection member 6 is used to detect the quantity of the materials discharged from the discharge port 15 and transmit an electrical signal including quantity information to the control member.

[0047] Among them, the detection member 6 is electrically connected to the control member, and an electrical signal is transmitted between the detection member 6 and the control member to monitor the quantity of the materials discharged from the discharge port 15.

[0048] In the above solution, the detecting member 6 is provided to detect the quantity of the material. The detecting member 6 transmits an electrical signal including quantity information to the control member, and the control member automatically controls the movement of the gate 12, improving the automation level and thus simplifying the operation steps.

[0049] Specifically, the detecting member 6 can detect the weight of the material, or the volume of the material, or the height of the material pile, etc.

[0050] Referring to Figure 1 、 Figure 2 In some embodiments, the material conveying device 100 further includes a conveying device 45. The conveying device 45 is disposed below the buffer bin 1. The conveying device 45 is used to convey the material. The detecting member 6 is disposed on the conveying device 45, and the detecting member 6 is configured as a weight detecting member to detect the weight of the material.

[0051] Among them, the detecting member 6 is installed on the conveying device 45. The material discharged from the discharge port 15 falls on the conveying device 45, increasing the weight. The detecting member 6 is configured as a weight detecting member, and can detect the change in weight, thereby detecting the weight of the material.

[0052] In the above solution, by configuring the detecting member 6 as a weight detecting member to detect the weight of the material, the method is simple, the reliability is relatively high, and the accuracy is improved.

[0053] In other embodiments, the detecting member 6 is configured as a height detecting member. The material discharged from the discharge port 15 accumulates on the conveying device 45, and the height detecting member can detect the change in the height of the material pile, thereby indirectly obtaining the quantity of the material discharged from the discharge port 15.

[0054] Referring to Figure 1 、 Figure 2 In some embodiments, the conveying device 45 includes: a conveying frame, a conveying belt 4 and a driving pulley 5.

[0055] The conveying belt 4 is movably disposed on the conveying frame. The driving pulley 5 is connected to the conveying belt 4 to drive the conveying belt 4 to move. Among them, the weight detecting member is disposed on the conveying frame, and the distance between the weight detecting member and the driving pulley 5 is L2, and 750 cm ≤ L2.

[0056] Among them, under the drive of the driving pulley 5, the movement of the conveying belt 4 drives the material on the conveying belt 4 to move. The conveying belt 4 can convey the material into the furnace or to the next process.

[0057] In the above solution, by setting the distance L2 between the weight detecting member and the driving pulley 5 to be greater than or equal to 750 cm, the weight detecting member and the driving pulley 5 are kept at a certain distance, thereby preventing the driving pulley 5 from affecting the operation of the weight detecting member and making the material conveying device 100 more reliable.

[0058] For example, the distance L2 between the weight detection member and the driving pulley 5 is 750 cm; or, the distance L2 between the weight detection member and the driving pulley 5 is 760 cm; or, the distance L2 between the weight detection member and the driving pulley 5 is 770 cm; or, the distance L2 between the weight detection member and the driving pulley 5 is 780 cm; or, the distance L2 between the weight detection member and the driving pulley 5 is 790 cm; or, the distance L2 between the weight detection member and the driving pulley 5 is 800 cm. Of course, the distance L2 between the weight detection member and the driving pulley 5 can also be a larger value, which will not be elaborated here.

[0059] In some embodiments, the control member is electrically connected to the driving pulley 5 to control the speed of the conveyor belt 4 according to the electrical signal.

[0060] Among them, the control member controls the rotation of the driving pulley 5. The rotation speed of the driving pulley 5 is adjustable. The speed of the driving pulley 5 is controlled according to the weight of the material detected by the detection member 6. The conveyor belt 4 is frequency-converted to control the belt speed by relying on the detection member 6.

[0061] In the above solution, by setting the control member to be electrically connected to the driving pulley 5 and the control member to control the rotation of the driving pulley 5, the speed of the conveyor belt 4 is indirectly controlled, improving the control ability, effectively improving the fluctuation of the material quantity, avoiding the influence of the material quantity fluctuation on the reaction and negative pressure of the metallurgical furnace, facilitating the furnace condition control, and improving the on-site working environment.

[0062] In some embodiments, the speed of the conveyor belt 4 is V, and V ≤ 2 m / s.

[0063] Among them, the conveyor belt 4 is driven by the driving pulley 5, and the speed of the driving pulley 5 controls the speed of the conveyor belt 4.

[0064] In the above solution, by setting the speed V of the conveyor belt 4 to be less than or equal to 2 m / s, the speed of the conveyor belt 4 is made less than a certain value, thereby preventing the material on the conveyor belt 4 from being thrown out of the conveyor belt 4 and improving the stability.

[0065] For example, the speed V of the conveyor belt 4 is 2 m / s; or, the speed V of the conveyor belt 4 is 1.9 m / s; or, the speed V of the conveyor belt 4 is 1.8 m / s; or, the speed V of the conveyor belt 4 is 1.7 m / s; or, the speed V of the conveyor belt 4 is 1.6 m / s; or, the speed V of the conveyor belt 4 is 1.5 m / s; or, the speed V of the conveyor belt 4 is 1.4 m / s; or, the speed V of the conveyor belt 4 is 1.3 m / s; or, the speed V of the conveyor belt 4 is 1.2 m / s; or, the speed V of the conveyor belt 4 is 1.1 m / s; or, the speed V of the conveyor belt 4 is 1.0 m / s; or, the speed V of the conveyor belt 4 is 0.5 m / s.

[0066] Specifically, the driving pulley 5 is driven by the driving motor 11, and the rotational speed of the driving motor 11 is less than or equal to 1500 rpm.

[0067] In some specific embodiments, a combined baffle 3 is provided between the buffer bin 1 and the conveyor belt 4 to avoid material waste.

[0068] Refer to Figure 1 , in some embodiments, a detachable bar gate 2 is provided in the buffer bin 1, and the bar gate 2 is provided upstream of the gate 12.

[0069] Wherein, the bar gate 2 includes a group of spaced bars or fences, and the bars or fences can be fixed or movable. The bar gate 2 screens large or rough materials to prevent oversized particles from entering the downstream process.

[0070] In the above solution, by setting the bar gate 2 to screen large or rough materials to prevent oversized particles from entering the downstream process, the screened materials are relatively uniform, so that the controllability of the materials discharged from the discharge port 15 multiple times is higher, and it is more convenient to make the materials discharged multiple times more uniform.

[0071] Specifically, the bar gate 2 is detachable, that is to say, for different materials, the bar gate 2 can be correspondingly replaced to adapt to the requirements of different sizes of materials and improve the adaptability. For example, for the first material which is larger, the bar gate 2 uses a specification with a large gap, and for the second material which is smaller, the bar gate 2 uses a specification with a small gap, so as to adapt to the requirements of different sizes of materials.

[0072] Refer to Figure 2 , in some embodiments, a vibrator 13 is further provided on the buffer bin 1, and there are multiple vibrators 13 which are arranged on the opposite sides of the buffer bin 1.

[0073] Among them, the vibrator 13 removes dust or coking substances adhering to the inner surface of the buffer bin 1 through mechanical vibration or impact force to maintain the normal operation and efficient work of the equipment. The vibrator 13 can also keep the material loose through periodic vibration, prevent blockage, avoid the occurrence of "arch" effect or "rat hole" effect, and ensure the smooth outflow of the material.

[0074] In the above solution, by setting the vibrator 13, the dust or coking substances adhering to the inner surface of the buffer bin 1 are removed to maintain the normal operation and efficient work of the equipment. It can also keep the material loose through periodic vibration, prevent blockage, and ensure the smooth outflow of the material.

[0075] Specifically, the vibrator 13 can drive an eccentric wheel or a hammer through a motor to generate periodic vibration or impact force; or, the vibrator 13 uses an electromagnet to generate periodic magnetic force to drive the vibrating component to impact or vibrate.

[0076] In some other embodiments, a sealing cover 9 is further provided above the buffer bin 1. The buffer bin 1 is provided with an inlet, the sealing cover 9 is arranged around the inlet, and an observation hole 10 is provided on the sealing cover 9.

[0077] Among them, the sealing cover 9 is arranged above the buffer bin 1, the sealing cover 9 surrounds the inlet of the buffer bin 1, and the sealing cover 9 plays an agglomerating effect.

[0078] In the above solution, by setting the sealing cover 9 above the buffer bin 1 and using the sealing cover 9 to cover the inlet, when the material enters the buffer bin 1, the sealing cover 9 prevents the material from spilling around, making the work more stable.

[0079] Specifically, a feeding belt is arranged above the buffer bin 1, and the feeding belt transports the material into the buffer bin 1. The sealing cover 9 seals the driving roller of the feeding belt.

[0080] Refer to Figure 1 、 Figure 2 In some other embodiments, the buffer bin 1 is further provided with vibrators 13. There are multiple vibrators 13, and the multiple vibrators 13 are arranged on the opposite sides of the buffer bin 1. A sealing cover 9 is further provided above the buffer bin 1. The buffer bin 1 is provided with an inlet, the sealing cover 9 is arranged around the inlet, and an observation hole 10 is provided on the sealing cover 9.

[0081] Among them, the vibrator 13 removes dust or coking substances adhering to the inner surface of the buffer bin 1 through mechanical vibration or impact force to maintain the normal operation and efficient work of the equipment. The vibrator 13 can also keep the material loose through periodic vibration, prevent blockage, avoid the occurrence of "arch" effect or "rat hole" effect, and ensure the smooth outflow of the material. The sealing cover 9 is arranged above the buffer bin 1. The sealing cover 9 surrounds the inlet of the buffer bin 1, and the sealing cover 9 plays an agglomerating effect.

[0082] In the above solution, by setting the vibrator 13, the dust or coking substances adhering to the inner surface of the buffer bin 1 are removed to maintain the normal operation and efficient work of the equipment. It can also keep the material loose through periodic vibration, prevent blockage, and ensure the smooth outflow of the material. By setting the sealing cover 9 above the buffer bin 1 and using the sealing cover 9 to cover the inlet, when the material enters the buffer bin 1, the sealing cover 9 prevents the material from spilling around, making the work more stable.

[0083] Specifically, the vibrator 13 can generate periodic vibration or impact force by driving an eccentric wheel or a hammer through a motor; or, the vibrator 13 uses an electromagnet to generate periodic magnetic force to drive the vibrating component to impact or vibrate. A feeding belt is arranged above the buffer bin 1, and the feeding belt transports the material into the buffer bin 1. The sealing cover 9 seals the driving roller of the feeding belt.

[0084] Refer to Figure 1 , in some specific embodiments, observation holes 10 are provided on both sides of the sealing cover 9 for convenient observation.

[0085] In some specific embodiments, the vibration frequency distribution control system (Distributed Control System, DCS, DCS is a system for automation and process control, which decentralizes the control functions, distributes them at multiple locations, and coordinates the control through a network) of the vibrator 13 is used for control adjustment.

[0086] In the control of the vibrator 13 of the buffer bin 1, the DCS can be used to monitor and adjust the vibration frequency of the vibrator 13 in real time. Through the DCS, the operator can remotely set and optimize the vibration frequency to ensure the best material flow and anti-blocking effect. The functions of the DCS in the control of the vibration frequency of the vibrator 13 are as follows: 1. Real-time monitoring: The DCS system can monitor the operating status of the vibrator 13 in real time, including parameters such as vibration frequency and vibration amplitude. 2. Automatic adjustment: According to the characteristics of the material and the actual operating conditions, the DCS system can automatically adjust the frequency and vibration mode of the vibrator 13 to ensure smooth material flow. 3. Data recording and analysis: The DCS system can record the operating data of the vibrator 13 and perform analysis to help the operator optimize the control strategy. 4. Remote control: The operator can remotely control the operation of the vibrator 13 through the DCS system in the control room without manual adjustment on-site, improving work efficiency and safety.

[0087] Referring to Figure 2 , in some specific embodiments, there are two vibrators 13, and the two vibrators 13 are respectively arranged on the two side walls of the buffer bin 1 to improve performance.

[0088] It should be noted that when the material conveying device 100 according to the embodiment of the present invention realizes the feeding amount into the furnace at 0-300 tons per hour, the goal of uniform and quantitative feeding into the furnace is achieved, and the deviation of the feeding amount into the furnace is less than 1%, and the on-site environmental protection conditions are greatly improved.

[0089] In some specific embodiments, the buffer bin 1 is constructed as a trapezoidal structure, with the upper part of the buffer bin 1 being narrow and the lower part being wide, and the width of the lower opening being greater than 1000 mm.

[0090] Other components and operations of the material conveying device 100 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0091] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0092] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A material conveying device, characterized in that, include: A buffer silo (1), the buffer silo (1) is used to accommodate materials, and the buffer silo (1) has a discharge port (15) for discharging the materials; a gate (12), the gate (12) being movably disposed at the discharge port (15); A control component is electrically connected to the gate (12) to control the gate (12) to close the discharge port (15) when a preset amount of the material is discharged from the discharge port (15).

2. The material conveying device according to claim 1, characterized in that: The buffer silo (1) is provided with a track member (14), the track member (14) extending in a height direction, and the gate (12) is movably connected to the track member (14).

3. The material conveying device according to claim 2, characterized in that, Also includes: A transport device (45), the transport device (45) is arranged below the buffer silo (1), the transport device (45) is used to transport the material, and the distance between the transport device (45) and the gate (12) is L1, 100mm≤L1≤400mm.

4. The material conveying device according to claim 1, characterized in that: It also includes a detection component (6), which is electrically connected to the control component. The detection component (6) is used to detect the amount of the material discharged from the discharge port (15) and transmit an electrical signal including the amount information to the control component.

5. The material conveying device according to claim 4, characterized in that, The invention also includes a transport device (45), the transport device (45) is arranged below the buffer silo (1), the transport device (45) is used to transport the material, the detection member (6) is arranged on the transport device (45), and the detection member (6) is constructed as a weight detection member (6) to detect the weight of the material.

6. The material conveying device according to claim 5, characterized in that The transport device (45) comprises: Conveyor frame; A conveying belt (4), wherein the conveying belt (4) is movably arranged on the conveying frame; A driving pulley (5), wherein the driving pulley (5) is connected to the conveying belt (4) to drive the conveying belt (4) to move; wherein, The weight detection member (6) is arranged on the conveying frame, and the distance between the weight detection member (6) and the driving pulley (5) is L2, 750cm≤L2.

7. The material conveying device according to claim 6, wherein, The control member is electrically connected to the driving pulley (5) to control the speed of the conveyor belt (4) according to the electrical signal.

8. The material conveying device according to claim 7, wherein, The speed of the conveying belt (4) is V, V≤2m / s.

9. The material conveying device according to claim 1, wherein A detachable rod valve (2) is provided in the buffer silo (1), and the rod valve (2) is provided upstream of the gate (12).

10. The material conveying device according to claim 1, characterized in that: The buffer silo (1) is further provided with a rapper (13), wherein the rapper (13) is multiple and the multiple rappers (13) are arranged on opposite sides of the buffer silo (1); and / or, a sealing cover (9) is further provided above the buffer silo (1), the buffer silo (1) is provided with an inlet, the sealing cover (9) is arranged around the inlet, and the sealing cover (9) is provided with an observation hole (10).

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