Material feeding system and control method of material feeding system

Abstract

The invention discloses a material feeding system and a control method of the material feeding system, and relates to the technical field of battery processing equipment, the material feeding system comprises a material vehicle, a material bin, a gas source driving part, a sending bin and a gas phase balancing device, the material vehicle is provided with a material storage cavity, and the material storage cavity is provided with a gas inlet and a discharge port; the material bin is communicated with the discharge hole; the air source driving part is connected to the air inlet and conveys materials in the material storage cavity to the material bin. The sending bin is connected to the lower end of the material bin, the sending bin is connected to the stirring bin, and the material bin is suitable for conveying materials into the sending bin; and the gas phase balancing device is communicated between the sending stock bin and the material bin and is used for adjusting the pressure difference between the sending stock bin and the material bin. According to the material feeding system, manpower can be liberated, the situation that materials make contact with air to generate harmful gas is avoided, meanwhile, operators are prevented from making contact with the materials in a close range, and harm caused by environmental factors to the body health of the operators is effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery processing equipment, and in particular to a material feeding system and a control method of the material feeding system. Background Art

[0002] In the related art, the powder material preparation process of lithium batteries requires manual bag unpacking and bag patting, which consumes manpower and also has the problem of powder leakage when the bags are opened. Some toxic, flammable and explosive powders with high risks, such as sulfide powders, will react with water in the air to generate hydrogen sulfide after leakage during manual bag unpacking and bag patting, posing a direct threat to the health of workers. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a material feeding system that avoids the generation of harmful gases when the material contacts the air, and also avoids the close contact of the operator with the material, thereby effectively reducing the harm caused by environmental factors to the health of the operator.

[0004] The present application also proposes a control method for the above-mentioned material feeding system.

[0005] According to the material feeding system of the first aspect of the present application, the material feeding system is suitable for feeding materials toward a mixing bin, and the material feeding system includes: a material cart, the material cart has a storage cavity, the storage cavity has an air inlet and a discharge port; a material bin, the material bin is connected to the discharge port; an air source drive component, one end of the air source drive component is connected to the air inlet, the air source drive component is suitable for conveying the material in the storage cavity to the material bin through the discharge port; a sending bin, the sending bin is connected to the lower end of the material bin, the sending bin is connected to the mixing bin, a first electronic scale is provided in the material bin, a second electronic scale is provided in the sending bin, and the material bin is suitable for conveying materials into the sending bin; a gas phase balancing device, the gas phase balancing device is connected between the sending bin and the material bin, and is used to adjust the pressure difference between the sending bin and the material bin.

[0006] According to the material feeding system of the present application, when an air source driving component is used to drive the material in the storage chamber to be transferred to the material bin, manpower can be liberated, and the material is prevented from contacting the air and generating harmful gases. At the same time, it also prevents the operators from close contact with the materials, effectively reducing the harm caused by environmental factors to the health of the operators, and the gas phase balance device can also be used to adjust the pressure between the material bin and the sending bin, so as to facilitate the transportation of the material in the material bin to the sending bin, thereby improving the feeding efficiency.

[0007] In some embodiments, the gas source driver is adapted to output nitrogen gas.

[0008] In this embodiment, nitrogen is input into the material storage chamber through the air source driving member, and the nitrogen will push the material in the material storage chamber to move toward the material bin. Nitrogen is an inert gas. After contacting with the material, nitrogen is not easy to react with the material, which can improve the safety of conveying materials.

[0009] In some embodiments, the material cart and the air source driving component are connected through a first connecting pipe, and the material cart also includes: a one-way valve and a pressure regulating valve, both of which are arranged on the first connecting pipe, the one-way valve is used to make the first connecting pipe unidirectionally conduct from the air source driving component toward the material storage chamber, and the pressure regulating valve is suitable for adjusting the flow rate of the nitrogen.

[0010] In this embodiment, a one-way valve and a pressure regulating valve are arranged on the first connecting pipe of the material cart. After the one-way valve is opened, the air source driving component can transport nitrogen toward the material storage chamber, thereby preventing the material in the material storage chamber from flowing back into the air source driving component; by adjusting the opening degree of the pressure regulating valve, the rate requirements for transferring different materials to the material bin can be met.

[0011] In some embodiments, the material feeding system further includes: a fan, and the fan is used to extract gas in the material bin.

[0012] In this embodiment, a fan is provided to extract gas from the material bin to form a negative pressure state in the material bin. When the air source driving component drives the material in the storage chamber to be transported toward the material bin, the efficiency of transporting the material in the storage chamber toward the material bin can be improved.

[0013] In some embodiments, the material cart further has a stirring paddle and a driving motor, the stirring paddle is located in the material storage chamber, and the driving motor is suitable for driving the stirring paddle to rotate.

[0014] In this embodiment, a stirring paddle and a driving motor are provided. The driving motor is suitable for driving the stirring paddle to rotate so as to break up the materials in the material storage chamber, thereby avoiding agglomeration of the materials in the material storage chamber and facilitating the air source driving member to drive the material transfer.

[0015] In some embodiments, the outer wall of the storage cavity is further provided with a first vibrator, and the first vibrator is used to vibrate the outer wall of the storage cavity.

[0016] In this embodiment, a first vibrator is arranged on the outer peripheral wall of the storage chamber. The first vibrator can vibrate the outer peripheral wall of the storage chamber so that the material in the storage chamber falls from the inner peripheral wall into the storage chamber, so that all the materials in the storage chamber can be transferred to the material bin.

[0017] In some embodiments, the air inlet is located at the upper end of the storage cavity, and the discharge port is located at the lower end of the storage cavity.

[0018] In this embodiment, the air inlet is located at the upper end of the storage chamber, and the discharge port is located at the lower end of the storage chamber. The gas in the air source driving component will push the material in the storage chamber to the discharge port, and transport it to the material bin through the discharge port.

[0019] In some embodiments, the material bin has a feed inlet, a filter element is disposed at the feed inlet, a back-blow valve is disposed on one side of the filter element, and the back-blow valve is used to clean the filter element.

[0020] In this embodiment, a filter element is provided at the feed inlet of the material bin, and a back-blowing valve is used to clean the filter element to prevent the material from clogging the filter element.

[0021] In some embodiments, a material discharge screw is provided in the material bin, and the material discharge screw is suitable for driving the material to be transported into the sending bin.

[0022] In this embodiment, a material discharge screw is provided, which can not only increase the rate at which materials are transported from the material bin to the sending bin, but also accurately control the weight of materials transported from the material bin to the sending bin.

[0023] In some embodiments, a second vibrator is provided on the outer peripheral wall of the sending silo, and the second vibrator is used to vibrate the outer peripheral wall of the sending silo.

[0024] In this embodiment, a second vibrator is arranged on the outer peripheral wall of the sending silo. The second vibrator can vibrate the outer peripheral wall of the sending silo, so that the material on the inner peripheral wall of the sending silo falls into the sending silo, and all the material in the sending silo can be transferred to the mixing silo.

[0025] In some embodiments, the gas phase balance device includes a second connecting pipe, a first switch valve, a second switch valve, a first pressure sensor and a second pressure sensor, the first end of the second connecting pipe is connected to the material bin, the first switch valve is arranged adjacent to the first end, the second switch valve, the second end of the second connecting pipe is connected to the sending bin, the second switch valve is arranged adjacent to the second end, the first pressure sensor is located in the material bin, and the second pressure sensor is located in the sending bin.

[0026] In this embodiment, a first switch valve, a second switch valve, a first pressure sensor and a second pressure sensor are arranged on the gas phase balancing device. The first switch valve and the second switch valve are used to open or close the phase balancing device, and the first pressure sensor and the second pressure sensor are used to obtain the pressure in the material bin and the pressure in the sending bin, respectively, so that the operating personnel can understand the pressure of the material bin and the sending bin and make corresponding processing in time.

[0027] In some embodiments, the first switch valve and / or the second switch valve is a pneumatic ball valve.

[0028] In this embodiment, by setting the first switch valve and / or the second switch valve as a pneumatic ball valve, the opening or closing can be remotely controlled, and the reliability during opening or closing is high.

[0029] In some embodiments, the second connecting pipe includes a plurality of sub-connecting pipes, and two adjacent sub-connecting pipes are connected via an elastic joint.

[0030] In this embodiment, by setting a soft connection between two adjacent sub-connecting pipes, the vibration between the two adjacent sub-connecting pipes can be absorbed to prevent the material bin and the sending bin from affecting each other when they vibrate.

[0031] In some embodiments, the material feeding system also includes: a negative pressure feeding pipe, a positive pressure feeding pipe and a conveying leakage detection device, the negative pressure feeding pipe is connected between the storage chamber and the material bin, the positive pressure feeding pipe is connected between the sending bin and the mixing bin, the negative pressure feeding pipe includes a plurality of connected third connecting pipes, the positive pressure feeding pipe includes a plurality of connected fourth connecting pipes, the conveying leakage detection device includes a plurality of collecting covers and detection sensors, the collecting covers are covered at the connection between two adjacent third connecting pipes and the connection between two adjacent fourth connecting pipes, and the detection sensor is located inside the collecting cover.

[0032] In this embodiment, a collection cover is provided at the connection between two adjacent third connecting pipes and at the connection between two adjacent fourth connecting pipes, so that leaked gas or material can be temporarily stored.

[0033] In some embodiments, the material feeding system further includes: a dust removal device, the dust removal device includes a dust removal pipe, and one end of the dust removal pipe is connected to the collection hood.

[0034] In this embodiment, a dust removal device is provided to preliminarily collect the material or gas leaking into the collection hood to avoid large-scale leakage of the material or gas.

[0035] In some embodiments, the material feeding system also includes: a gas detection device, the gas detection device includes a VOC detection sensor, a sulfide detection sensor and an oxygen concentration detection sensor, and the VOC detection sensor, the sulfide detection sensor and the oxygen concentration detection sensor are all located in the space where the material feeding system is located.

[0036] In this embodiment, a gas detection device is provided to detect volatile organic compounds, sulfides and oxygen concentration in the air, and the detected results are fed back to the central control system, which can make corresponding processing on the detected results.

[0037] According to the control method of the material feeding system of the second aspect of the present application, it is used to control the feeding of the material feeding system of the first aspect of the present application, and the control method of the material feeding system includes: replenishing the material bin, and the replenishing of the material bin includes: obtaining the weight of the material in the material bin; if the weight of the material is lower than the first preset value, connecting the storage cavity of any one of the material vehicles with the material bin; controlling the material in the storage cavity to feed toward the material bin; feeding the material bin for a first preset time, and judging the weight in the material bin; if the material weight is within the first preset range, completing the loading; if the material weight is lower than the first preset range, continuing to control the material in the storage cavity to feed toward the material bin for the first preset time, and judging the weight in the material bin.

[0038] According to the control method of the material feeding system of the present application, the material bin refilling program is started according to the weight of the material in the material bin, and the material bin is automatically refilled.

[0039] In some embodiments, before controlling the material in the storage chamber to be fed toward the material bin, the method includes: extracting gas in the material bin for a second preset time; determining the pressure value of the negative pressure feeding pipeline between the storage chamber and the material bin; if the pressure value is lower than the second preset value, controlling the material in the storage chamber to be fed toward the material bin; if the pressure value is equal to or greater than the second preset value, the negative pressure feeding pipeline is leaking, and the central control alarm is sounded.

[0040] This embodiment detects whether the negative pressure feeding pipeline is leaking by judging the pressure value of the negative pressure feeding pipeline between the material storage cavity and the material bin.

[0041] In some embodiments, after feeding the material bin for the first preset time, the process further includes: controlling the material storage chamber to stop feeding toward the material bin; and opening the back-blow valve in the material bin to clean the filter element in the material bin for a third preset time.

[0042] In this embodiment, after the feeding is completed, the filter element is cleaned and the material on the filter element is cleaned into the material bin.

[0043] In some embodiments, if the material weight is lower than a first preset range, it also includes: obtaining the number of times the material in the storage chamber is fed toward the material bin; if the number is lower than the first preset number, controlling the material in the storage chamber to be fed toward the material bin; if the number is equal to the first preset number, the material loading is out of tolerance and the central control alarm is triggered.

[0044] This embodiment determines whether there is a problem with the material bin refilling procedure by obtaining the number of times the material in the material storage cavity is fed into the material bin.

[0045] In some embodiments, after the material weight is within the first preset range, it also includes: clearing the material in the positive pressure feeding pipe between the storage chamber and the material bin to allow the material to be transported to the material bin; opening the back-blow valve in the material bin to clean the filter element in the material bin for a fourth preset time; obtaining the pressure values ​​on both sides of the filter element, which are respectively the first pressure value and the second pressure value; judging the pressure difference between the first pressure value and the second pressure value; if the pressure difference is greater than or equal to the third preset value, the central control alarm; if the pressure difference is less than the third preset value, the feeding is completed.

[0046] This embodiment determines the condition of the filter element by obtaining the pressure values ​​on both sides of the filter element and comparing them.

[0047] In some embodiments, the material feeding system is suitable for automatically feeding materials toward a mixing bin, and a sending bin is connected between the mixing bin and the material bin, and the control method of the material feeding system also includes: feeding the mixing bin, and the feeding of the mixing bin includes: obtaining the required value of the mixing bin; obtaining the weight of the material in the material bin, and comparing the material weight with the required value; if the material weight is lower than the required value, refilling the material bin; if the material weight is equal to or greater than the required value, controlling the material in the material bin to feed toward the sending bin; and starting the feeding program of the sending bin toward the mixing bin.

[0048] This embodiment completes the automatic feeding of materials from the sending silo to the mixing silo by setting a mixing silo feeding program.

[0049] In some embodiments, controlling the material in the material bin to feed toward the sending bin includes: opening the air pressure balance device between the material bin and the sending bin; and closing the air pressure balance device after the material in the material bin is fed toward the sending bin.

[0050] This embodiment facilitates feeding toward the sending silo by opening the air pressure balance device between the material silo and the sending silo when the material silo is feeding toward the sending silo.

[0051] In some embodiments, when the feeding procedure of the sending silo toward the mixing silo is started: if gas or material leakage is detected, the central control alarm is sounded and the feeding is stopped.

[0052] This embodiment detects in real time whether nitrogen or material is leaking when starting the feeding procedure from the silo to the mixing silo. If gas or material leakage is detected, the central control alarm is issued and the feeding is stopped.

[0053] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a schematic diagram of a material feeding system according to some embodiments of the present application; Figure 2 is a schematic diagram of a material vehicle according to some embodiments of the present application; Figure 3 is a schematic diagram of a material bin and a sending bin according to some embodiments of the present application; Figure 4 is a flow chart of material bin refilling according to some embodiments of the present application; Figure 5 This is a flow chart of loading materials into a mixing bin according to some embodiments of the present application.

[0055] Reference numerals: 101. Central control system; 102. Electric cabinet; 10. Material cart; 11. Material storage chamber; 12. Air inlet; 13. Material outlet; 14. Stirring paddle; 15. Driving motor; 16. First vibrator; 20. Material bin; 21. Material feeding screw; 31. Air source drive component; 32. Fan; 321. Filter; 40. Sending silo; 41. Second vibrator; 50. Gas phase balance device; 51. Second connecting pipe; 511. Sub-connecting pipe; 512. Elastic joint; 52. First switch valve; 53. Second switch valve; 61. Negative pressure feeding pipe; 62. Positive pressure feeding pipe; 63. Dust removal pipe; 70. Gas detection device; 71. VOC detection sensor; 72. Sulfide detection sensor; 73. Oxygen concentration detection sensor; 80. Mixing chamber. DETAILED DESCRIPTION

[0056] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0057] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding. Among them, lithium-ion batteries account for an increasing proportion of the power batteries currently used.

[0060] In the process of preparing powder for lithium batteries, manual actions such as unpacking and patting bags are required, which consumes manpower and there is also the problem of powder leakage when the bags are opened. This method is not suitable for toxic, flammable, explosive and other highly dangerous powders, such as sulfide powder. When the bags are manually unpacked and patted, the sulfide powder leaks and reacts with water in the air to generate hydrogen sulfide. Therefore, in the preparation process of solid-state battery powder, the powder bag opening and suction loading method cannot be used.

[0061] During the powder loading and conveying process of lithium batteries, compressed air is required as an energy source to drive the powder loading and conveying. When the dangerous powder comes into contact with the air, a dust cloud will be formed, increasing the risk of dust explosion. Therefore, the powder loading and conveying form of lithium batteries cannot meet the requirements of solid-state battery powder preparation and conveying.

[0062] Based on the above considerations, a material loading system is designed for the occupational health of the operators. The material loading system includes a material cart, a material bin and an air source drive component. The air inlet of the material cart is connected to the air source drive component, and then the outlet of the material cart is connected to the material bin. Thereafter, the air source drive component is opened, and the air source drive component outputs gas toward the storage chamber through the air inlet, so as to push the material in the storage chamber into the material bin through the outlet. This also avoids the material from contacting the air and generating harmful gases. It also avoids the operators from close contact with the materials, effectively reducing the harm caused by environmental factors to the health of the operators.

[0063] The material feeding system disclosed in the embodiment of the present application conveys the raw materials of lithium batteries to the mixing bin, and the raw materials of lithium batteries can be used to process battery cells, and battery cells can be used as power supply devices, or various energy storage systems using batteries as energy storage elements, and the power supply devices can be but not limited to mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0064] Reference below Figure 1-Figure 3 Describe the material feeding system according to the embodiment of the present application, Figure 1 is a schematic diagram of a material feeding system according to some embodiments of the present application, Figure 2 is a schematic diagram of a material vehicle 10 according to some embodiments of the present application, Figure 3 It is a schematic diagram of a material bin 20 and a sending bin 40 according to some embodiments of the present application.

[0065] According to the material feeding system of the first aspect of the present application, the material feeding system is suitable for feeding materials toward the mixing bin 80, and the material feeding system includes: a material cart 10, the material cart 10 has a storage chamber 11, and the storage chamber 11 has an air inlet 12 and a discharge port 13; a material bin 20, the material bin 20 is connected to the discharge port 13; an air source driving member 31, one end of the air source driving member 31 is connected to the air inlet 12, and the air source driving member 31 is suitable for conveying the material in the storage chamber 11 to the material bin 20 through the discharge port 13; a sending bin 40, the sending bin 40 is connected to the lower end of the material bin 20, the sending bin 40 is connected to the mixing bin 80, a first electronic weighing device is provided in the material bin 20, and a second electronic weighing device is provided in the sending bin 40, the material bin 20 is suitable for conveying materials into the sending bin 40, and a gas phase balancing device 50, the gas phase balancing device 50 is connected between the sending bin 40 and the material bin 20, and is used to adjust the pressure difference between the sending bin 40 and the material bin 20.

[0066] The material feeding system is a device for automatically feeding the mixing chamber 80. The mixing chamber 80 can be used in the field of lithium battery processing to evenly mix the positive or negative electrode materials (such as active materials, conductive agents, adhesives, etc.) in the mixing chamber 80 to form a stable slurry.

[0067] In the related art, the powder material preparation process of lithium batteries requires manual bag opening and bag patting, which consumes manpower and also has the problem of powder leakage when the bags are opened. This method is not suitable for toxic, flammable, explosive and other high-risk powders, such as sulfide powder. When the bags are manually opened and patted, the sulfide powder leaks and reacts with water in the air to generate hydrogen sulfide. Therefore, in the solid-state battery powder preparation process, the powder bag opening and suction loading method cannot be used.

[0068] During the powder loading and conveying process of lithium batteries, compressed air is required as an energy source to drive the powder loading and conveying. When the dangerous powder comes into contact with the air, a dust cloud will be formed, increasing the risk of dust explosion. Therefore, the powder loading and conveying form of lithium batteries cannot meet the requirements of solid-state battery powder preparation and conveying.

[0069] The material loading system of the present application includes a material cart 10, a material bin 20 and an air source driving member 31. The material cart 10 has a material storage chamber 11, and the material storage chamber 11 is used to store materials. The air source driving member 31 is used to drive the materials in the material storage chamber 11 to be transported to the material bin 20, and the material bin 20 is used to temporarily store materials. The air source driving member 31 can transport an inert gas into the material storage chamber 11, and the inert gas is used as an energy source to drive the material loading. For example, the inert gas can include: nitrogen, argon, neon or helium, etc. Among the inert gases, nitrogen accounts for about 78% of the volume of air and has low cost. The gas source of the air source driving member 31 is preferably nitrogen.

[0070] Optionally, the material cart 10 is provided with a plurality of material carts, each material cart 10 has a material storage cavity 11, the material storage cavity 11 is integrally formed on the material cart 10, and when materials are received, the material cart 10 is integrated with the incoming materials. Optionally, the material cart 10 has one material storage cavity 11, and the material storage cavity 11 is detachably mounted on the material cart 10, and when materials are received, the material storage cavity 11 is integrated with the incoming materials. The material cart 10 has rollers, which can facilitate the movement of the material cart 10 when the material cart 10 is moved.

[0071] For example, the effective volume of the material cart 10 is 200L, the pressure resistance is 0.06Mpa, the operating pressure is 0.03Mpa, and the material loading in the storage chamber 11 is not less than 150kg / time, which is much higher than the loading rate of 600g / time in the related technology, greatly improving the material preparation speed.

[0072] When it is necessary to feed the material bin 20, the operator pushes the material cart 10 to one side of the air source driving component 31, connects the air inlet 12 of the material cart 10 with the air source driving component 31, and then connects the outlet 13 of the material cart 10 with the material bin 20. Thereafter, the air source driving component 31 is opened, and the air source driving component 31 outputs gas toward the storage chamber 11 through the air inlet 12, so as to push the material in the storage chamber 11 into the material bin 20 through the outlet 13. After all the materials in one material cart 10 are transported to the material bin 20, the material cart 10 can be removed, and then another material cart 10 can be pushed, and the material cart 10 and the air source driving component 31 are connected again until the material in the material bin 20 reaches a preset value.

[0073] For example, when connecting the material cart 10 and the air source drive 31, an air source adapter can be selected; when connecting the material cart 10 and the material bin 20, a material bin 20 adapter can be selected. The air source adapter and the material bin 20 adapter use different types of quick connectors, which are safe, reliable and effectively foolproof.

[0074] The material in the material bin 20 is transported toward the sending bin 40 under the action of gravity. The first electronic weighing device can weigh the weight of the material that needs to be transferred from the material bin 20 to the sending bin 40, and the second electronic weighing device can weigh the weight of the material transferred to the sending bin 40, so as to accurately control the weight of the material that needs to be transferred from the material bin 20 to the sending bin 40. The material bin 20 can transport different materials toward the sending bin 40, and the materials can be premixed in the sending bin 40. After the premixing is completed, they can be transported to the mixing bin 80 to complete the loading.

[0075] When the material bin 20 conveys materials to the sending bin 40, the gas phase balancing device 50 is opened to balance the pressure of the material bin 20 and the sending bin 40. When the material bin 20 conveys materials to the sending bin 40, the air in the sending bin 40 can be conveyed to the material bin 20 through the gas phase balancing device 50, so that the pressure of the material bin 20 and the pressure of the sending bin 40 are equal or close to each other, so that the material in the material bin 20 continues to be conveyed to the sending bin 40, thereby improving the loading efficiency.

[0076] The gas phase balance device 50 can adjust the pressure of the two closed spaces to improve the batching accuracy of the closed spaces and prevent gas or material leakage.

[0077] For example, there may be multiple mixing bins 80 , and the multiple mixing bins 80 may be arranged in parallel, and the material feeding system may feed the multiple mixing bins 80 at the same time.

[0078] According to the material feeding system of the present application, an air source driving component 31 is used to drive the material in the storage chamber 11 to be transferred to the material bin 20, which can free up manpower and increase the number of material feeding systems that can be managed by a single person. It also avoids the material from contacting the air and generating harmful gases, while also avoiding close contact between the operator and the material, effectively reducing the harm caused by environmental factors to the health of the operator. At the same time, the gas phase balance device 50 is used to adjust the pressure between the material bin 20 and the sending bin 40, so as to facilitate the transportation of the material in the material bin 20 to the sending bin 40, thereby improving the feeding efficiency.

[0079] In a specific example, a feed port is provided in the material bin 20, a feed valve is provided at the feed port, and a discharge valve is provided at the discharge port 13 of the material cart 10. When the material in the storage chamber 11 is transferred to the material bin 20, the feed valve and the discharge valve can be opened, and when the feeding is stopped, the feed valve and the discharge valve can be closed.

[0080] The material feeding system further includes: an electric cabinet 102 and a central control system 101 . The electric cabinet 102 is used to provide power to the material feeding system, and the central control system 101 controls the operation of the material feeding system.

[0081] In some embodiments, reference Figure 1 The gas source driving component 31 is suitable for outputting nitrogen.

[0082] For example, nitrogen is an inert gas that is not easy to react with materials, and has a low source cost and is easy to prepare. In the related art, air is used as an energy source, and dust clouds will be formed after the materials come into contact with the air, increasing the risk of explosion. The air source drive member 31 inputs nitrogen into the storage chamber 11, and the nitrogen will push the materials in the storage chamber 11 to move toward the material bin 20. After contacting the materials, the nitrogen is not easy to react with the materials, which can improve the safety of conveying materials.

[0083] Specifically, the gas source driving member 31 is suitable for outputting compressed nitrogen.

[0084] In this embodiment, nitrogen is input into the material storage chamber 11 through the air source driving member 31. The nitrogen will push the material in the material storage chamber 11 to move toward the material bin 20. Nitrogen is an inert gas. After contacting with the material, nitrogen is not easy to react with the material, which can improve the safety of conveying materials.

[0085] In some embodiments, reference Figure 1-Figure 2 The material cart 10 and the air source driving component 31 are connected through a first connecting pipe. The material cart 10 also includes: a one-way valve and a pressure regulating valve. The one-way valve and the pressure regulating valve are both arranged on the first connecting pipe. The one-way valve is used to make the first connecting pipe unidirectionally conduct from the air source driving component 31 toward the material storage chamber 11, and the pressure regulating valve is suitable for adjusting the flow rate of nitrogen.

[0086] Exemplarily, the first connecting pipe has an air inlet 12, the air source driving member 31 is connected to the air inlet 12, the one-way valve can be located upstream of the pressure regulating valve, and the pressure regulating valve can be located upstream of the one-way valve. When the one-way valve is opened, the air source driving member 31 can transport nitrogen into the storage chamber 11, and the material in the storage chamber 11 can be prevented from flowing back into the air source driving member 31.

[0087] By adjusting the opening degree of the pressure regulating valve, the flow rate of nitrogen delivered from the gas source driving member 31 to the storage chamber 11 can be adjusted. The flow rate of nitrogen delivered from the source driving member to the storage chamber 11 is relatively large, which can drive a large amount of materials in the storage chamber 11 to transfer toward the material bin 20 in a short time, thereby improving the efficiency of transporting the materials in the storage chamber 11 to the material bin 20; the flow rate of nitrogen delivered from the gas source driving member 31 to the storage chamber 11 is relatively small, which can drive the materials in the storage chamber 11 to transfer slowly toward the material bin 20, and can improve the stability of transporting the materials in the storage chamber 11 to the material bin 20; the opening degree of the pressure regulating valve can be adjusted according to different materials to achieve the purpose of adapting to different material transfer rates.

[0088] In this embodiment, a one-way valve and a pressure regulating valve are arranged on the first connecting pipe of the material cart 10. After the one-way valve is opened, the air source driving component 31 can transport nitrogen toward the material storage chamber 11, thereby preventing the material in the material storage chamber 11 from flowing back into the air source driving component 31; by adjusting the opening degree of the pressure regulating valve, the rate requirements for transferring different materials into the material bin 20 can be met.

[0089] In some embodiments, reference Figure 1 The material feeding system also includes: a fan 32, which is used to extract the gas in the material bin 20.

[0090] Illustratively, when the air source driving component 31 drives the material in the storage chamber 11 to be transported toward the material bin 20, after the fan 32 is turned on, the fan 32 can extract the gas in the material bin 20, so that a negative pressure state is formed in the material bin 20, which can increase the efficiency of transporting the material in the storage chamber 11 toward the material bin 20.

[0091] A filter 321 is provided on the pipeline through which the fan 32 extracts the gas in the material bin 20 , and is used to filter impurities in the gas in the material bin 20 .

[0092] For example, the blower 32 may be a Roots blower.

[0093] In this embodiment, a fan 32 is provided, and the fan 32 is used to extract the gas in the material bin 20, so that a negative pressure state is formed in the material bin 20. When the air source driving component 31 drives the material in the storage chamber 11 to be transported toward the material bin 20, the efficiency of transporting the material in the storage chamber 11 toward the material bin 20 can be improved.

[0094] In some embodiments, reference Figure 1-Figure 2 The material cart 10 also has a stirring paddle 14 and a driving motor 15 . The stirring paddle 14 is located in the material storage chamber 11 , and the driving motor 15 is suitable for driving the stirring paddle 14 to rotate.

[0095] For example, when the air source driving member 31 drives the material in the storage chamber 11 to be transported toward the material bin 20, the driving motor 15 drives the stirring paddle 14 to rotate, so as to break up the material in the storage chamber 11 and prevent the material in the storage chamber 11 from agglomerating and blocking the discharge port 13. At the same time, after the material in the storage chamber 11 is broken up, the material particles in the storage chamber 11 are smaller, which is also convenient for the air source driving member 31 to drive the material transfer.

[0096] For example, the driving motor 15 can be located outside the material storage chamber 11 without occupying the space of the material storage chamber 11, so that the material storage chamber 11 can accommodate more materials.

[0097] In this embodiment, a stirring paddle 14 and a driving motor 15 are provided. The driving motor 15 is suitable for driving the stirring paddle 14 to rotate so as to break up the materials in the storage chamber 11 and avoid agglomeration of the materials in the storage chamber 11, so as to facilitate the air source driving member 31 to drive the material transfer.

[0098] In some embodiments, reference Figure 1-Figure 2 The outer wall of the storage chamber 11 is also provided with a first vibrator 16 , and the first vibrator 16 is used to vibrate the outer wall of the storage chamber 11 .

[0099] Exemplarily, when the air source driving component 31 drives the material in the storage chamber 11 to be transported toward the material bin 20, the first vibrator 16 can vibrate the outer peripheral wall of the storage chamber 11, so that the material in the storage chamber 11 falls from the inner peripheral wall of the storage chamber 11 into the storage chamber 11, so that all the materials in the storage chamber 11 can be transferred to the material bin 20.

[0100] The first vibrator 16 is disposed on the outer peripheral wall of the storage cavity 11 without occupying the space of the storage cavity 11 , so that the storage cavity 11 can accommodate more materials.

[0101] In this embodiment, a first vibrator 16 is arranged on the outer wall of the storage chamber 11. The first vibrator 16 can vibrate the outer wall of the storage chamber 11 so that the material in the storage chamber 11 falls from the inner wall of the storage chamber 11 into the storage chamber 11, so that all the materials in the storage chamber 11 can be transferred to the material bin 20.

[0102] In some embodiments, reference Figure 1-Figure 2 The air inlet 12 is located at the upper end of the storage chamber 11 , and the discharge port 13 is located at the lower end of the storage chamber 11 .

[0103] Exemplarily, the air inlet 12 is connected to the air source driving component 31, and the discharge port 13 is connected to the material bin 20. After the gas in the air source driving component 31 enters the storage chamber 11 from the air inlet 12, the discharge port 13 is at the lower end, and the gas will push the material in the storage chamber 11 to the discharge port 13, and transport it to the material bin 20 through the discharge port 13.

[0104] In this embodiment, the air inlet 12 is located at the upper end of the storage chamber 11, and the discharge port 13 is located at the lower end of the storage chamber 11. The gas in the air source driving component 31 will push the material in the storage chamber 11 to the discharge port 13, and transport it to the material bin 20 through the discharge port 13.

[0105] In some embodiments, reference Figure 1 The material bin 20 has a feed inlet, a filter element is arranged at the feed inlet, and a back-blowing valve is arranged on one side of the filter element, and the back-blowing valve is used to clean the filter element.

[0106] For example, when the material in the storage chamber 11 is transferred to the material bin 20, the filter element can filter the material to filter out impurities in the material to prevent the impurities in the material from entering the material bin 20; or to filter out large particles in the material.

[0107] When the material is transported to the material bin 20 through the filter element, the filter element is covered with the material. After the feeding is completed, the back-blowing valve can be opened to blow the material on the filter element into the material bin 20 to clean the filter element.

[0108] In this embodiment, a filter element is provided at the feed inlet of the material bin 20, and a back-blowing valve is used to clean the filter element to prevent the material from clogging the filter element.

[0109] In some embodiments, reference Figure 1 , Figure 3 A material discharge screw 21 is provided in the material bin 20 , and the material discharge screw 21 is suitable for driving the material to be transported to the sending bin 40 .

[0110] Exemplarily, when the material bin 20 is conveying materials toward the sending bin 40, the unloading screw 21 is opened, and when the unloading screw 21 rotates, it can drive the materials to be conveyed into the sending bin 40. The unloading screw 21 can drive the materials in the material bin 20 to be conveyed into the sending bin 40, which can increase the rate at which the materials in the material bin 20 are conveyed to the sending bin 40.

[0111] The weight of the material to be transported to the sending silo 40 is weighed by the first electronic weighing device, and then fed back to the central control system 101. The central control system 101 controls the rotation speed of the unloading screw 21. First, in the initial stage of unloading, the rotation speed of the unloading screw 21 is increased to unload the material quickly. When the required material is lower than the set value, the rotation speed of the unloading screw 21 is reduced to achieve accurate unloading. After unloading is completed, the unloading screw 21 stops rotating. At the same time, the second electronic weighing device in the sending silo 40 weighs the material in the sending silo 40 to check whether the material in the sending silo 40 reaches the material weight required by the sending silo 40. If it is insufficient, it is fed back to the central control system 101. The central control system 101 continues to control the unloading of the unloading screw 21. If it meets the requirements, the unloading is stopped.

[0112] In a specific example, compressed nitrogen is used to purge the unloading screw 21 and the inner tube wall of the material bin 20, so that the residual material between the unloading screw 21 and the inner tube wall of the material bin 20 is blown into the sending bin 40, thereby achieving the purpose of pipe cleaning and precise weighing, until the second electronic scale in the sending bin 40 continuously detects that the weight of the material in the sending bin 40 reaches the material weight required by the sending bin 40 within a reasonable error, that is, the unloading is completed.

[0113] In this embodiment, a material discharge screw 21 is provided, which can not only increase the rate at which materials from the material bin 20 are transported to the sending bin 40 , but also accurately control the weight of materials from the material bin 20 transported to the sending bin 40 .

[0114] In some embodiments, reference Figure 1 , Figure 3 A second vibrator 41 is provided on the outer peripheral wall of the sending silo 40 , and the second vibrator 41 is used to vibrate the outer peripheral wall of the sending silo 40 .

[0115] Exemplarily, when the material in the sending silo 40 is transported toward the mixing silo 80, the second vibrator 41 can vibrate the outer wall of the sending silo 40 so that the material on the inner wall of the sending silo 40 falls into the sending silo 40, so that all the material in the sending silo 40 can be transferred to the mixing silo 80.

[0116] The second vibration exciter 41 is disposed on the outer peripheral wall of the sending silo 40 without occupying the space of the sending silo 40 , so that the sending silo 40 can accommodate more materials.

[0117] In this embodiment, a second vibrator 41 is arranged on the outer wall of the sending silo 40. The second vibrator 41 can vibrate the outer wall of the sending silo 40 so that the material on the inner wall of the sending silo 40 falls into the sending silo 40, so that all the material in the sending silo 40 can be transferred to the mixing silo 80.

[0118] In a specific example, the gas butterfly valve on the outer wall of the sending silo 40, when the gas butterfly valve is opened, the external nitrogen can be passed into the sending silo 40, which is used to transport the material in the sending silo 40 to the mixing silo 80; at the same time, the second vibrator 41 is turned on to vibrate the outer wall of the sending silo 40, so that the material on the inner wall of the sending silo 40 falls into the sending silo 40.

[0119] In some embodiments, reference Figure 1 , Figure 3 The gas phase balancing device 50 includes a second connecting pipe 51, a first switch valve 52, a second switch valve 53, a first pressure sensor and a second pressure sensor. The first end of the second connecting pipe 51 is connected to the material bin 20, the first switch valve 52 is arranged adjacent to the first end, the second switch valve 53 and the second connecting pipe 51 are connected to the sending bin 40, the second switch valve 53 is arranged adjacent to the second end, the first pressure sensor is located in the material bin 20, and the second pressure sensor is located in the sending bin 40.

[0120] Exemplarily, when the material bin 20 needs to transport materials toward the sending bin 40, the first switch valve 52 and the second switch valve 53 are opened, and air circulation can be achieved between the sending bin 40 and the mixing bin 80 to balance the pressure between the material bin 20 and the sending bin 40, thereby facilitating the material bin 20 to transport materials toward the sending bin 40.

[0121] When the material truck 10 transports materials toward the material bin 20, the material bin 20 is in a negative pressure state, and the first switch valve 52 and the second switch valve 53 are closed to prevent the gas in the sending bin 40 from entering the material bin 20 and affecting the gas state of the material bin 20; when the sending bin 40 transports materials toward the mixing bin 80, the sending bin 40 is in a positive pressure state, and the first switch valve 52 and the second switch valve 53 are closed to prevent the gas in the sending bin 40 from entering the material bin 20 and affecting the gas state of the sending bin 40.

[0122] The first pressure sensor is used to obtain the pressure in the material bin 20 and feed it back to the central control system 101; the second pressure sensor is used to obtain the pressure in the sending bin 40 and feed it back to the central control system 101; the central control system 101 displays the pressure in the material bin 20 and the pressure in the sending bin 40, so that the operator can understand the pressure in the material bin 20 and the sending bin 40 and make corresponding processing in time. For example, when the pressure difference between the pressure in the material bin 20 and the pressure in the sending bin 40 is greater than 1kpa, the central control system 101 alarms and stops unloading.

[0123] In this embodiment, a first switch valve 52, a second switch valve 53, a first pressure sensor and a second pressure sensor are arranged on the gas phase balancing device 50. The first switch valve 52 and the second switch valve 53 are used to open or close the phase balancing device, and the first pressure sensor and the second pressure sensor are used to obtain the pressure in the material bin 20 and the pressure in the sending bin 40 respectively, so that the operating personnel can understand the pressures of the material bin 20 and the sending bin 40 and make corresponding processing in time.

[0124] In some embodiments, reference Figure 1 , Figure 3 The first switch valve 52 and / or the second switch valve 53 are pneumatic ball valves.

[0125] For example, a pneumatic ball valve is a valve that uses compressed air as a power source and drives the ball to rotate through a pneumatic actuator to achieve a switch or adjustment function. It can be used for remote control and has high reliability when opened or closed. The first switch valve 52 can be a pneumatic ball valve, or the second switch valve 53 can be a pneumatic ball valve, or both the first switch valve 52 and the second switch valve 53 can be pneumatic ball valves.

[0126] In this embodiment, by setting the first switch valve 52 and / or the second switch valve 53 as a pneumatic ball valve, the opening or closing can be remotely controlled, and the reliability when opening or closing is high.

[0127] In some embodiments, reference Figure 1 , Figure 3 The second connecting pipe 51 includes a plurality of sub-connecting pipes 511 , and two adjacent sub-connecting pipes 511 are connected via an elastic joint 512 .

[0128] In this embodiment, by setting a soft connection between two adjacent sub-connecting pipes 511, the vibration between the two adjacent sub-connecting pipes 511 can be absorbed to prevent the material bin 20 and the sending bin 40 from affecting each other when they shake.

[0129] For example, the elastic joint 512 may be a plastic pipe joint, which can absorb the vibration between two adjacent sub-connecting pipes 511 .

[0130] In some embodiments, reference Figure 1 , Figure 3The material feeding system also includes: a negative pressure feeding pipe 61, a positive pressure feeding pipe 62 and a conveying leakage detection device. The negative pressure feeding pipe 61 is connected between the storage chamber 11 and the material bin 20, and the positive pressure feeding pipe 62 is connected between the sending bin 40 and the mixing bin 80. The negative pressure feeding pipe 61 includes a plurality of connected third connecting pipes, and the positive pressure feeding pipe 62 includes a plurality of connected fourth connecting pipes. The conveying leakage detection device includes a plurality of collecting covers and detection sensors. The collecting covers are covered at the connection between two adjacent third connecting pipes and the connection between two adjacent fourth connecting pipes, and the detection sensor is located in the collecting cover.

[0131] For example, the connection between the adjacent third connecting pipe of the negative pressure feeding pipe 61 is prone to gas or material leakage, and the outer peripheral side of the connection between the adjacent third connecting pipe is covered with a collecting cover. If gas or material leakage occurs in the negative pressure feeding pipe 61, the gas or material can be temporarily stored in the collecting cover to prevent the gas or material from leaking everywhere.

[0132] The connection between the adjacent fourth connecting pipe of the positive pressure feeding pipe 62 is prone to gas or material leakage. A collecting cover is covered on the outer peripheral side of the connection between the adjacent fourth connecting pipe. If gas or material leakage occurs in the positive pressure feeding pipe 62, the gas or material can be temporarily stored in the collecting cover to prevent the gas or material from leaking everywhere.

[0133] A detection sensor is arranged in the collection hood to detect in real time whether gas or material leakage occurs at the connection of the adjacent third connecting pipe or the connection of the adjacent fourth connecting pipe, and feed back to the central control system 101 to facilitate timely processing by the operating personnel.

[0134] In this embodiment, a collection cover is provided at the connection between two adjacent third connecting pipes and at the connection between two adjacent fourth connecting pipes, so that leaked gas or material can be temporarily stored.

[0135] In some embodiments, reference Figure 1 The material feeding system also includes: a dust removal device, the dust removal device includes a dust removal pipe 63, and one end of the dust removal pipe 63 is connected to the collection cover.

[0136] For example, after the detection sensor detects that the material or gas in the negative pressure feeding pipe 61 or the positive pressure feeding pipe 62 leaks into the collection hood, the dust removal pipe 63 can collect the material or gas in the collection hood to prevent leakage from the collection hood. The material or gas collected by the dust removal pipe 63 can be transported to the transfer bin of the dust removal device, where the leaked material or gas can be temporarily stored, and the operator can handle the leakage of the negative pressure feeding pipe 61 or the positive pressure feeding pipe 62.

[0137] In this embodiment, a dust removal device is provided to preliminarily collect the material or gas leaking into the collection hood to avoid large-scale leakage of the material or gas.

[0138] In some embodiments, reference Figure 1 The material feeding system also includes: a gas detection device 70, the gas detection device 70 includes a VOC detection sensor 71, a sulfide detection sensor 72 and an oxygen concentration detection sensor 73, and the VOC detection sensor 71, the sulfide detection sensor 72 and the oxygen concentration detection sensor 73 are all located in the space where the material feeding system is located.

[0139] VOC is a volatile organic compound, an organic chemical substance that is easily evaporated or volatilized at room temperature, and has a significant impact on the environment, health and climate. The VOC detection sensor 71 is used to detect volatile organic compounds, the sulfide detection sensor 72 is used to detect sulfides, and the oxygen concentration detection sensor 73 is used to detect the oxygen concentration in the air, and the detected results are fed back to the central control system 101, and the central control system 101 can make corresponding processing on the detected results.

[0140] In this embodiment, a gas detection device 70 is provided to detect volatile organic compounds, sulfides and oxygen concentration in the air, and the detected results are fed back to the central control system 101, and the central control system 101 can make corresponding processing on the detected results.

[0141] Reference below Figure 4-Figure 5 Describe the control method for the material feeding system according to the embodiment of the present application, Figure 4 is a flow chart of refilling the material bin 20 according to some embodiments of the present application, Figure 5 This is a flow chart of loading the mixing bin 80 according to some embodiments of the present application.

[0142] According to the control method of the material feeding system of the second aspect of the present application, it is used to control the material feeding system of the first aspect of the present application. The control method of the material feeding system includes: replenishing the material bin 20, and replenishing the material bin 20 includes: Obtain the weight of the material in the material bin 20; If the material weight is lower than the first preset value, the material storage chamber 11 of any material vehicle 10 is connected to the material bin 20; Controlling the material in the storage chamber 11 to feed toward the material bin 20; Allow the material bin 20 to feed for a first preset time, and determine the weight in the material bin 20; If the material weight is within the first preset range, loading is completed; If the weight of the material is lower than the first preset range, the material in the storage chamber 11 is continuously controlled to be fed toward the material bin 20 for the first preset time, and the weight in the material bin 20 is determined.

[0143] Exemplarily, after the material bin 20 delivers materials to the sending bin 40 , the material in the material bin 20 decreases, and the material bin 20 needs to be refilled.

[0144] When the weight of the material in the material bin 20 is lower than the first preset value, the low weight alarm of the material bin 20 is triggered, and the material storage chamber 11 of any material cart 10 is connected to the material bin 20, and the material cart 10 is connected to the air source driving member 31. The first preset value can be set according to different types of materials. For example, the first preset value can be 200g.

[0145] The material in the storage chamber 11 is controlled to be fed toward the material bin 20. The material cart 10 has a one-way valve and a pressure regulating valve. The storage chamber 11 has an air inlet 12 and an outlet 13. The air inlet 12 is provided with a one-way valve and a pressure regulating valve. The outlet 13 is provided with an outlet valve. The material bin 20 has an inlet, and the inlet is provided with an inlet valve. The material cart 10 also has a first vibrator 16, a drive motor 15 and a stirring paddle 14. The one-way valve is opened, and the opening degree of the pressure regulating valve is adjusted, and the outlet valve and the inlet valve are opened, and the drive motor 15 and the first vibrator 16 are opened. The air source drive member 31 transports the material in the storage chamber 11 to the material bin 20 through the outlet 13 and the inlet.

[0146] The material bin 20 is fed with materials for a first preset time, and after the feeding valve is closed, the weight of the materials in the material bin 20 is obtained, and the weight of the materials in the material bin 20 is determined. For example, the first preset time is 20 seconds.

[0147] If the material weight is within the first preset range, the loading is completed, and the one-way valve, the pressure regulating valve and the discharge port 13 are closed at the same time. The first preset range is within plus or minus 50g of the required material weight. For example, the first preset range can be 250kg±50g.

[0148] If the weight of the material is lower than the first preset range, the feeding valve is opened, the material in the storage chamber 11 is continuously controlled to feed toward the material bin 20 for the first preset time, and the weight in the material bin 20 is determined, and the above feeding steps are repeated until the weight of the material is within the first preset range, and the feeding is completed. For example, lower than the first preset range is lower than 250kg-50g.

[0149] According to the control method of the material feeding system of the present application, the material bin 20 refilling program is started according to the weight of the material in the material bin 20, and the material bin 20 is automatically refilled.

[0150] In some embodiments, reference Figure 4, before controlling the material in the storage chamber 11 to feed toward the material bin 20, the method includes: Extracting gas from the material bin 20 for a second preset time; Determine the pressure value of the negative pressure feeding pipe 61 between the material storage chamber 11 and the material bin 20; If the pressure value is lower than the second preset value, the material in the storage chamber 11 is controlled to be fed toward the material bin 20; If the pressure value is equal to or greater than the second preset value, the negative pressure feeding pipeline 61 is leaking and the central control alarm is sounded.

[0151] Exemplarily, the material feeding system further includes a fan 32, which extracts gas in the material bin 20 for a second preset time to stabilize the pressure in the negative pressure feeding pipe 61 between the material storage chamber 11 and the material bin 20. For example, the second preset time is 10 seconds.

[0152] Determine the pressure value of the positive pressure feeding pipeline 62 between the material storage chamber 11 and the material bin 20.

[0153] If the pressure value is lower than the second preset value, it means that the pressure in the positive pressure feeding pipe 62 is normal, and the material in the storage chamber 11 is controlled to be fed toward the material bin 20 .

[0154] If the pressure value is equal to or greater than the second preset value, the positive pressure feeding pipeline 62 is leaking, the central control alarm is sounded, the fan 32 is stopped, and the positive pressure feeding pipeline 62 is processed. For example, the second preset value is -35 kPa.

[0155] This embodiment detects whether the negative pressure feeding pipe 61 is leaking by judging the pressure value of the negative pressure feeding pipe 61 between the material storage chamber 11 and the material bin 20 .

[0156] In some embodiments, reference Figure 4 , so that after the material bin 20 is fed for the first preset time, the method further includes: Control the material storage chamber 11 to stop feeding material toward the material bin 20; The backflush valve in the material bin 20 is opened to clean the filter element in the material bin 20 for a third preset time.

[0157] Exemplarily, the material storage chamber 11 is controlled to stop feeding material toward the material bin 20 , that is, the feed valve is closed.

[0158] The backflush valve in the material bin 20 is opened to clean the filter element in the material bin 20 for a third preset time, and the material on the filter element is cleaned into the material bin 20. For example, the third preset time is 3 seconds.

[0159] In this embodiment, after the feeding is completed, the filter element is cleaned and the material on the filter element is cleaned into the material bin 20.

[0160] In some embodiments, reference Figure 4 If the material weight is lower than the first preset range, it also includes: Obtain the number of times the material in the storage chamber 11 is fed toward the material bin 20; If the number is lower than the first preset number, the material in the material storage chamber 11 is controlled to be fed toward the material bin 20; If the number is equal to the first preset number, the material loading is out of tolerance and the central control alarm is triggered.

[0161] Exemplarily, the number of times the material in the storage chamber 11 is fed toward the material bin 20 is obtained. If the number is lower than the first preset number, the material in the storage chamber 11 is controlled to be fed toward the material bin 20. If the number is equal to the first preset number, the feeding is out of tolerance, and the central control alarm is issued. The number of feedings is too many, but the material in the material bin 20 still does not reach the first preset range, indicating that there is a problem with the feeding system and needs to be processed. For example, the first preset number is 5 times.

[0162] In this embodiment, the number of times the material in the material storage cavity 11 is fed toward the material bin 20 is obtained to determine whether there is a problem in the material bin 20 refilling procedure.

[0163] In some embodiments, reference Figure 4 , after the material weight is within the first preset range, it also includes: Clear the material in the negative pressure feeding pipe 61 between the material storage chamber 11 and the material bin 20 so that the material is transported to the material bin 20; Opening the backflush valve in the material bin 20 to clean the filter element in the material bin 20 for a fourth preset time; The pressure values ​​on both sides of the filter element are obtained as a first pressure value and a second pressure value respectively; Determining a pressure difference between a first pressure value and a second pressure value; If the pressure difference is greater than or equal to the third preset value, the central control alarm; If the pressure difference is less than the third preset value, the loading is completed.

[0164] Exemplarily, clearing the material in the negative pressure feeding pipe 61 between the material storage chamber 11 and the material bin 20 is a pipe cleaning procedure, so that the material is transported to the material bin 20 .

[0165] Open the back-blowing valve in the material bin 20 to clean the filter element in the material bin 20 for a fourth preset time; obtain the pressure values ​​on both sides of the filter element, which are the first pressure value and the second pressure value respectively; for example, the fourth preset time is 20s.

[0166] Determine the pressure difference between the first pressure value and the second pressure value; if the pressure difference is greater than or equal to the third preset value, it means that the pressure value is too large, the filter element may be blocked, and the central control alarm; if the pressure difference is less than the third preset value, it means that the pressure value is normal and the loading is completed. For example, the third preset value is 1kpa.

[0167] This embodiment determines the condition of the filter element by obtaining the pressure values ​​on both sides of the filter element and comparing them.

[0168] In some embodiments, reference Figure 5 The material feeding system is suitable for automatically feeding materials toward the mixing bin 80, and a sending bin 40 is connected between the mixing bin 80 and the material bin 20. The control method of the material feeding system also includes: feeding the mixing bin 80, Mixing bin 80 feeding includes: Obtain the required material value of the mixing bin 80; Obtain the weight of the material in the material bin 20, and compare the weight of the material with the required material value; If the material weight is lower than the required value, refill the material bin 20; If the material weight is equal to or greater than the required material value, the material in the material bin 20 is controlled to be fed toward the sending bin 40; Start the feeding procedure of the sending bin 40 toward the mixing bin 80 .

[0169] Exemplarily, the material demand value of the mixing bin 80 is obtained.

[0170] The weight of the material in the material bin 20 is obtained, and the weight of the material in the material bin 20 is compared with the required material value of the mixing bin 80 .

[0171] If the material weight is lower than the required value, the material bin 20 is refilled to refill the material bin 20; if the material weight is equal to or greater than the required value, the material in the material bin 20 is controlled to feed toward the sending bin 40, and the material to be transported to the sending bin 40 is weighed by the first weighing device. After the feeding to the sending bin 40 is completed, the sending bin 40 is started to feed toward the mixing bin 80, so that the material in the sending bin 40 is transported to the mixing bin 80, and the feeding of the mixing bin 80 is completed.

[0172] In this embodiment, a feeding program for the mixing bin 80 is set to complete the automatic feeding of materials from the sending bin 40 to the mixing bin 80 .

[0173] In some embodiments, reference Figure 5 , controlling the material in the material bin 20 to feed toward the sending bin 40 includes: Open the air pressure balance device between the material bin 20 and the sending bin 40; After the material in the material bin 20 is fed to the sending bin 40, the air pressure balancing device is closed.

[0174] Exemplarily, the air pressure balance device between the material bin 20 and the sending bin 40 is turned on to balance the pressure between the material bin 20 and the sending bin 40, so as to facilitate the material in the material bin 20 to be transported toward the sending bin. After the material in the material bin 20 is fed toward the sending bin 40, the air pressure balance device is turned off.

[0175] In this embodiment, when the material bin 20 is feeding materials toward the sending bin 40 , the air pressure balance device between the material bin 20 and the sending bin 40 is opened, thereby facilitating feeding materials toward the sending bin 40 .

[0176] In some embodiments, reference Figure 5 , when starting the feeding procedure of the sending silo 40 toward the mixing silo 80: If gas or material leakage is detected, the central control will sound an alarm and stop feeding.

[0177] For example, when starting the feeding procedure of sending the silo 40 toward the mixing silo 80: if gas or material leakage is detected, the central control alarm is used to remind the operator to handle it and stop feeding.

[0178] The gas can be nitrogen. When the sending silo 40 is feeding toward the mixing silo 80, compressed nitrogen is input into the sending silo 40 to drive the material in the sending silo 40 to feed toward the mixing silo 80. If nitrogen leakage is detected, it indicates that there is a leakage in the positive pressure feeding pipeline 62 between the sending silo 40 and the mixing silo 80, and a central control alarm is required to stop feeding.

[0179] This embodiment detects in real time whether nitrogen or material is leaking when starting the feeding procedure of sending the silo 40 toward the mixing silo 80. If gas or material leakage is detected, the central control alarm is sounded and the feeding is stopped.

[0180] The following will refer to Figure 1-Figure 5 A material feeding system and a control method of the material feeding system according to a specific embodiment of the present application are described.

[0181] The material loading system is used to automatically load the mixing bin 80, and the material loading system includes a material cart 10, a material bin 20, an air source drive 31 and a sending bin 40. The material cart 10 has a storage chamber 11, and the storage chamber 11 has an air inlet 12 and a discharge port 13. The air inlet 12 of the storage chamber 11 is provided with a one-way valve and a pressure regulating valve, and the discharge port 13 is provided with a discharge valve. The material bin 20 has a feed port and a feed valve is provided at the feed port. The material cart 10 also has a stirring paddle 14 and a drive motor 15. The stirring paddle 14 is located in the storage chamber 11, and the drive motor 15 is suitable for driving the stirring paddle 14 to rotate. A first vibrator 16 is also provided on the outer peripheral wall of the storage chamber 11, and the first vibrator 16 is used to vibrate the outer peripheral wall of the storage chamber 11. A fan 32 is provided on one side of the material bin 20 for extracting gas in the material bin 20. A negative pressure loading pipeline 61 is connected between the storage chamber 11 and the material bin 20.

[0182] The material cart 10 is connected between the air source drive 31 and the material bin 20, the air inlet 12 of the storage chamber 11 is connected to the air source drive 31, the discharge port 13 of the storage chamber 11 is connected to the feed port of the material bin 20, the one-way valve, the pressure regulating valve, the feed valve and the discharge valve, as well as the fan 32, are opened, and the drive motor 15 is turned on at the same time. The air source drive 31 delivers compressed nitrogen to the storage chamber 11 through the one-way valve, the pressure regulating valve and the air inlet 12, the drive motor 15 drives the stirring paddle 14 to rotate, and is used to stir the material, the first exciter 16 is used to vibrate the outer peripheral wall of the storage chamber 11, the fan 32 is used to extract the air in the material bin 20, and the compressed nitrogen pushes the material to move through the discharge port 13 toward the negative pressure feeding pipe 61, and is delivered to the material bin 20 through the negative pressure feeding pipe 61; after the material in the storage chamber 11 is delivered, another material cart 10 is replaced until the material in the material bin 20 reaches the set range.

[0183] A filter element is provided at the feed inlet, and a back-blow valve is provided on one side of the filter element. After the feeding is completed, the back-blow valve is opened to clean the filter element.

[0184] A gas phase balance device 50 is connected between the material bin 20 and the sending bin 40. The gas phase balance device 50 includes a second connecting pipe 51, a first switch valve 52, a second switch valve 53, a first pressure sensor and a second pressure sensor. The first end of the second connecting pipe 51 is connected to the material bin 20, the first switch valve 52 is arranged adjacent to the first end, the second switch valve 53 is arranged adjacent to the second end, the first pressure sensor is located in the material bin 20, and the second pressure sensor is located in the sending bin 40. The first switch valve 52 and / or the second switch valve 53 are pneumatic ball valves. The second connecting pipe 51 includes a plurality of sub-connecting pipes 511, and two adjacent sub-connecting pipes 511 are connected by an elastic joint 512. A material discharge screw 21 is arranged in the material bin 20, and the material discharge screw 21 is suitable for driving the material to be transported to the sending bin 40.

[0185] When the material bin 20 feeds toward the sending bin 40, the first switch valve 52 and the second switch valve 53 are opened to adjust the pressure difference between the material bin 20 and the sending bin 40, and the feeding screw 21 rotates to drive the material in the material bin 20 to feed toward the sending bin 40. The first weighing device is used to weigh the material to be transported to the sending bin 40, and the second weighing device is used to weigh whether the material transported to the sending bin 40 is within the set range. When transporting materials, the first pressure sensor is used to detect the pressure value in the material bin 20 in real time, and the second pressure sensor is used to detect the pressure value in the generating bin in real time, and the pressure is fed back to the central control system 101.

[0186] A second vibrator 41 is provided on the outer peripheral wall of the sending silo 40, and a positive pressure feeding pipe 62 is connected between the mixing silo 80 and the sending silo 40. The compressed nitrogen in the sending silo 40 drives the material in the sending silo 40 to enter the mixing silo 80 through the positive pressure feeding pipe 62, and the second vibrator 41 is used to vibrate the outer peripheral wall of the sending silo 40.

[0187] The material feeding system also includes a conveying leakage detection device and a dust removal device. The conveying leakage detection device includes a plurality of collecting hoods and detection sensors. The negative pressure feeding pipeline 61 includes a plurality of connected third connecting pipes. The positive pressure feeding pipeline 62 includes a plurality of connected fourth connecting pipes. The collecting hood is covered at the connection of two adjacent third connecting pipes and the connection of two adjacent fourth connecting pipes. The dust removal device includes a dust removal pipe 63, one end of which is connected to the collecting hood. When nitrogen or material leaks to the collecting hood at the connection of two adjacent third connecting pipes and the connection of two adjacent fourth connecting pipes, the dust removal pipe 63 is used to clean the nitrogen or material in the collecting hood.

[0188] The material feeding system also includes a gas detection device 70, which includes a VOC detection sensor 71, a sulfide detection sensor 72, and an oxygen concentration detection sensor 73. The VOC detection sensor 71, the sulfide detection sensor 72, and the oxygen concentration detection sensor 73 are all located in the space where the material feeding system is located. The gas detection device 70 detects volatile organic compounds, sulfides, and oxygen concentrations in the air, and feeds back the detected results to the central control system 101, which can process the detected results accordingly.

[0189] The control method of the material feeding system includes two procedures: replenishing the material bin 20 and feeding the mixing bin 80 .

[0190] The material bunker 20 refill includes: Obtain the weight of the material in the material bin 20; If the material weight is lower than the first preset value, the material storage chamber 11 of any material vehicle 10 is connected to the material bin 20; The fan 32 is used to extract the gas in the material bin 20 for 20 seconds; Determine the pressure value of the positive pressure feeding pipe 62 between the material storage chamber 11 and the material bin 20; If the pressure value is lower than -35 kPa, the one-way valve, the feed valve, the drive motor 15 and the first vibrator 16 are opened, and the material in the storage chamber 11 is fed toward the material bin 20; If the pressure value is equal to or greater than -35kpa, the negative pressure feeding pipe 61 is leaking, and the central control alarm is triggered; The material bin 20 is kept fed for 20 seconds, and the feed valve is closed to stop feeding into the material bin 20; The backflush valve in the material bin 20 is opened to clean the filter element in the material bin 20 for a third preset time.

[0191] And determine the weight in the material bin 20; If the weight of the material is within the range of plus or minus 50g of the set value within 10s, the material in the positive pressure feeding pipe 62 between the material storage chamber 11 and the material bin 20 is cleared to the material bin 20; Close the one-way valve, the feed valve, the drive motor 15 and the first vibrator 16; Open the backflush valve in the material bin 20 to clean the filter element in the material bin 20 for 20 seconds; The pressure values ​​on both sides of the filter element are obtained as a first pressure value and a second pressure value respectively; determining a pressure difference between a first pressure value and a second pressure value; If the pressure difference is greater than or equal to the third preset value, the central control alarm; If the pressure difference is less than the third preset value, the loading is completed; If the weight of the material is less than the set value minus 50g within 10s, the number of times the material in the storage chamber 11 is fed toward the material bin 20 is obtained; If the number is less than 5 times, the material bin 20 is allowed to keep feeding for 20 seconds, and then the feeding valve is closed to stop feeding into the material bin 20; the weight in the material bin 20 is determined again until the weight of the material is within plus or minus 50g of the set value within 10 seconds; If the number is equal to 5 times, the material loading is out of tolerance and the central control alarm is triggered.

[0192] Mixing bin 80 feeding includes: Obtain the required material value of the mixing bin 80; Obtain the weight of the material in the material bin 20, and compare the weight of the material with the required material value; If the material weight is lower than the required value, refill the material bin 20; If the material weight is equal to or greater than the required material value, the air pressure balance device between the material bin 20 and the sending bin 40 is opened; After the material in the material bin 20 is fed to the sending bin 40, the air pressure balancing device is closed.

[0193] Control the material in the material bin 20 to feed toward the sending bin 40; Start the feeding procedure of the sending bin 40 toward the mixing bin 80 .

[0194] If nitrogen or material leakage is detected, the central control alarm will sound and feed will be stopped.

[0195] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0196] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A material feeding system, characterized in that: The material feeding system is suitable for feeding materials toward the mixing bin (80), and the material feeding system comprises: A material cart (10), the material cart (10) having a material storage chamber (11), the material storage chamber (11) having an air inlet (12) and a material outlet (13); A material bin (20), the material bin (20) being in communication with the discharge port (13); An air source driving member (31), one end of which is connected to the air inlet (12), and the air source driving member (31) is suitable for conveying the material in the material storage chamber (11) to the material bin (20) through the material outlet (13); a sending silo (40), the sending silo (40) being connected to the lower end of the material silo (20), the sending silo (40) being connected to the mixing silo (80), the material silo (20) being provided with a first electronic weighing device, the sending silo (40) being provided with a second electronic weighing device, and the material silo (20) being suitable for conveying materials into the sending silo (40); A gas phase balance device (50), the gas phase balance device (50) is connected between the sending silo (40) and the material silo (20), and is used to adjust the pressure difference between the sending silo (40) and the material silo (20).

2. The material feeding system according to claim 1, characterized in that: The gas source driving member (31) is suitable for outputting nitrogen.

3. The material feeding system according to claim 2, characterized in that: The material cart (10) and the gas source driving component (31) are connected via a first connecting pipe. The material cart (10) further comprises: a one-way valve and a pressure regulating valve. Both the one-way valve and the pressure regulating valve are arranged on the first connecting pipe. The one-way valve is used to allow the first connecting pipe to be unidirectionally conducted from the gas source driving component (31) toward the material storage chamber (11). The pressure regulating valve is suitable for adjusting the flow rate of the nitrogen.

4. The material feeding system according to claim 1, characterized in that: Also includes: A fan (32), the fan (32) is used to extract gas from the material bin (20).

5. The material feeding system according to claim 1, characterized in that: The material vehicle (10) further comprises a stirring paddle (14) and a driving motor (15); the stirring paddle (14) is located in the material storage chamber (11); and the driving motor (15) is suitable for driving the stirring paddle (14) to rotate.

6. The material feeding system according to claim 1, characterized in that: The outer peripheral wall of the material storage cavity (11) is also provided with a first vibrator (16), and the first vibrator (16) is used to vibrate the outer peripheral wall of the material storage cavity (11).

7. The material feeding system according to claim 1, characterized in that: The air inlet (12) is located at the upper end of the material storage chamber (11), and the material outlet (13) is located at the lower end of the material storage chamber (11).

8. The material feeding system according to claim 1, characterized in that: The material bin (20) has a feed inlet, a filter element is provided at the feed inlet, a back-blowing valve is provided on one side of the filter element, and the back-blowing valve is used to clean the filter element.

9. The material feeding system according to claim 1, characterized in that: A material discharge screw (21) is provided in the material bin (20), and the material discharge screw (21) is suitable for driving the material to be transported to the sending bin (40).

10. The material feeding system according to claim 1, characterized in that: A second vibrator (41) is provided on the outer peripheral wall of the sending silo (40), and the second vibrator (41) is used to vibrate the outer peripheral wall of the sending silo (40).

11. The material feeding system according to claim 1, characterized in that: The gas phase balancing device (50) includes a second connecting pipe (51), a first switch valve (52), a second switch valve (53), a first pressure sensor, and a second pressure sensor. The first end of the second connecting pipe (51) is connected to the material bin (20), the first switch valve (52) is arranged adjacent to the first end, and the second switch valve (53) is arranged adjacent to the second end. The second end of the second connecting pipe (51) is connected to the sending bin (40), the second switch valve (53) is arranged adjacent to the second end, the first pressure sensor is located in the material bin (20), and the second pressure sensor is located in the sending bin (40).

12. The material feeding system according to claim 11, characterized in that: The first switch valve (52) and / or the second switch valve (53) are pneumatic ball valves.

13. The material feeding system according to claim 11, characterized in that: The second connecting pipe (51) comprises a plurality of sub-connecting pipes (511), and two adjacent sub-connecting pipes (511) are connected via an elastic joint (512).

14. The material feeding system according to claim 1, characterized in that: Also includes: A negative pressure feeding pipe (61), a positive pressure feeding pipe (62) and a conveying leakage detection device, wherein the negative pressure feeding pipe (61) is connected between the material storage chamber (11) and the material bin (20), and the positive pressure feeding pipe (62) is connected between the sending bin (40) and the mixing bin (80). The negative pressure feeding pipe (61) includes a plurality of connected third connecting pipes, and the positive pressure feeding pipe (62) includes a plurality of connected fourth connecting pipes. The conveying leakage detection device includes a plurality of collecting hoods and detection sensors. The collecting hoods are covered at the connection between two adjacent third connecting pipes and the connection between two adjacent fourth connecting pipes, and the detection sensors are located in the collecting hoods.

15. The material feeding system according to claim 14, characterized in that: Also includes: A dust removal device, the dust removal device comprising a dust removal pipe (63), one end of the dust removal pipe (63) being connected to the collection cover.

16. The material feeding system according to claim 14, characterized in that: The system also includes: a gas detection device (70), wherein the gas detection device (70) includes a VOC detection sensor (71), a sulfide detection sensor (72), and an oxygen concentration detection sensor (73), and the VOC detection sensor (71), the sulfide detection sensor (72), and the oxygen concentration detection sensor (73) are all located in the space where the material feeding system is located.

17. A control method for a material feeding system, characterized in that: Used to control the material feeding system of any one of claims 1 to 16, the control method of the material feeding system comprises: replenishing the material bin (20), and the replenishing of the material bin (20) comprises: Obtaining the weight of the material in the material bin (20); If the weight of the material is lower than a first preset value, the material storage chamber (11) of any one of the material vehicles (10) is connected to the material bin (20); Controlling the material in the material storage chamber (11) to be fed toward the material bin (20); Allowing the material bin (20) to feed material for a first preset time, and determining the weight in the material bin (20); If the material weight is within the first preset range, loading is completed; If the weight of the material is lower than the first preset range, the material in the material storage chamber (11) is continuously controlled to be fed toward the material bin (20) for the first preset time, and the weight in the material bin (20) is determined.

18. The control method of the material feeding system according to claim 17, characterized in that: Before controlling the material in the material storage chamber (11) to feed toward the material bin (20), the method includes: extracting gas from the material bin (20) for a second preset time; Determining the pressure value of the negative pressure feeding pipeline (61) between the material storage chamber (11) and the material bin (20); If the pressure value is lower than a second preset value, the material in the material storage chamber (11) is controlled to be fed toward the material bin (20); If the pressure value is equal to or greater than a second preset value, the negative pressure feeding pipeline (61) is leaking and the central control alarm is triggered.

19. The control method of the material feeding system according to claim 17, characterized in that: After the material bin (20) is fed with material for a first preset time, the method further comprises: Controlling the material storage chamber (11) to stop feeding material toward the material bin (20); The backflush valve in the material bin (20) is opened to clean the filter element in the material bin (20) for a third preset time.

20. The control method of the material feeding system according to claim 17, characterized in that: If the material weight is lower than the first preset range, the following steps are also included: Obtaining the number of times the material in the material storage cavity (11) is fed toward the material bin (20); If the number is lower than a first preset number, controlling the material in the material storage chamber (11) to be fed toward the material bin (20); If the number is equal to the first preset number, the loading is out of tolerance and the central control alarm is triggered.

21. The control method of the material feeding system according to claim 17, characterized in that: When the material weight is within the first preset range, the following further includes: Removing materials from the negative pressure feeding pipe (61) between the material storage chamber (11) and the material bin (20) so that the materials are transported to the material bin (20); Opening the backflush valve in the material bin (20) to clean the filter element in the material bin (20) for a fourth preset time; The pressure values ​​on both sides of the filter element are obtained as a first pressure value and a second pressure value respectively; Determining a pressure difference between a first pressure value and a second pressure value; If the pressure difference is greater than or equal to a third preset value, the central control alarm is triggered; If the pressure difference value is less than the third preset value, the loading is completed.

22. The control method of the material feeding system according to claim 17, characterized in that: The material feeding system is suitable for feeding materials toward a mixing bin (80), a sending bin (40) is connected between the mixing bin (80) and the material bin (20), and the control method of the material feeding system further includes: feeding materials into the mixing bin (80), and the feeding of materials into the mixing bin (80) includes: Obtaining the material value of the mixing bin (80); Taking the weight of the material in the material bin (20), and comparing the weight of the material with the required material value; If the material weight is lower than the required material value, refilling the material bin (20); If the weight of the material is equal to or greater than the required material value, controlling the material in the material bin (20) to be fed toward the sending bin (40); The feeding procedure of the sending silo (40) toward the mixing silo (80) is started.

23. The control method of the material feeding system according to claim 22, characterized in that: Controlling the material in the material bin (20) to feed toward the sending bin (40) comprises: Opening the air pressure balance device between the material bin (20) and the sending bin (40); After the material in the material bin (20) is fed into the sending bin (40), the air pressure balancing device is closed.

24. The control method of the material feeding system according to claim 22, characterized in that: When starting the feeding procedure of the sending bin (40) toward the mixing bin (80): If gas or material leakage is detected, the central control will sound an alarm and stop feeding.

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