Discharging device of sintering furnace

Abstract

The utility model discloses a discharging device of a sintering furnace. The discharging device comprises a stock bin, a sending hopper, a first valve assembly, a first ventilation assembly and a controller. The stock bin is used for being connected with a main body of the sintering furnace so as to collect sintered materials; the sending hopper is provided with a feeding port, a discharging port and a first ventilation port, and a connected feeding channel is arranged between the feeding port and the stock bin; the first valve assembly is arranged on the feeding channel and used for controlling on-off of the feeding channel. The first ventilation assembly is connected with the first ventilation opening, outputs gas from the first ventilation opening and conveys protective gas into the sending hopper, and the protective gas is the same as the protective gas in the main body; the controller is electrically connected with the first air exchange assembly and the first valve assembly so as to control the first air exchange assembly to be started when the sending hopper completes sending and the first valve assembly is closed. According to the discharging device, air backflow can be effectively isolated, it is ensured that the atmosphere in the sintering furnace is stable, and the product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, in particular to a discharging device of a sintering furnace. Background Art

[0002] At present, lithium iron phosphate positive electrode material has become the most promising new generation of safe and environmentally friendly lithium-ion power battery positive electrode material due to its high specific capacity, low price, no environmental pollution, good safety and thermal stability. It can be widely used in new energy vehicles, energy storage equipment, uninterruptible power supplies, power tools and other fields, and has a very broad market prospect.

[0003] At present, the industrial production of lithium iron phosphate positive electrode materials mostly adopts high-temperature solid-phase synthesis method, that is, the main raw materials such as lithium salt, iron salt, phosphate salt and other additives are mixed evenly according to the stoichiometric ratio, and then the temperature is raised and sintered to obtain LiFePO4 positive electrode material. Most of the existing large-scale production of lithium iron phosphate positive electrode materials adopts sintering equipment such as roller kiln, push plate kiln and rotary kiln. At the same time, in order to prevent the oxidation of divalent iron during the synthesis of lithium iron phosphate materials and ensure the consistency of the product, the material is synthesized in a closed state, and a large amount of protective gas needs to be introduced throughout the material production process to prevent the oxidation of divalent iron during the synthesis of lithium iron phosphate materials and ensure the consistency of the product.

[0004] In order to increase production capacity and reduce costs and increase efficiency, the equipment is large in size and weight. To ensure installation stability and process stability, challenges are posed to its overall structure, especially the layout and design of the discharge device. The discharge device of the sintering furnace has room for improvement. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the purpose of the utility model is to provide a discharge device for a sintering furnace, which can effectively isolate air backflow, ensure a stable atmosphere in the sintering furnace, and ensure product quality.

[0006] According to some embodiments of the utility model, the discharging device of the sintering furnace includes a silo, a sending hopper, a first valve assembly, a first ventilation assembly and a controller. The silo is used to be connected to the main body of the sintering furnace to collect the sintered materials; the sending hopper has a feed port, a discharge port and a first ventilation port, and a connected feed channel is provided between the feed port and the silo; the first valve assembly is arranged on the feed channel to control the on-off of the feed channel; the first ventilation assembly is connected to the first ventilation port, the first ventilation assembly outputs gas from the first ventilation port, and conveys protective gas into the sending hopper, and the protective gas is the same as the protective gas in the main body; the controller is electrically connected to the first ventilation assembly and the first valve assembly to control the first ventilation assembly to open when the sending hopper completes sending and the first valve assembly is closed.

[0007] According to the discharge device of the sintering furnace of the embodiment of the utility model, a first valve assembly is arranged on the feed channel between the silo and the feed inlet of the sending hopper to control the connection state between the sending hopper and the silo. When the sending hopper receives the material from the silo, the first valve assembly will be closed in time to reduce the possibility of residual air entering the silo through the feed channel and then entering the sintering furnace, thereby avoiding affecting the production process of the sintering furnace.

[0008] The first ventilation assembly is connected to the first ventilation port of the sending bucket, and the protective gas is continuously delivered to the sending bucket, thereby effectively replacing the air in the sending bucket. In this way, when the first valve assembly is opened and the material enters the sending bucket from the silo, the possibility of air entering the silo in reverse is avoided, thereby preventing air from entering the sintering furnace body, and maintaining the purity of the atmosphere in the sintering furnace.

[0009] The first ventilation component and the first valve component are controlled by setting a controller, which helps to control the first ventilation component to open when the sending bucket completes sending and the first valve component is closed, thereby improving the gas replacement efficiency of the discharging device.

[0010] According to the discharging device of some embodiments of the utility model, the sending bucket is provided with at least one air port for generating an air pressure difference inside and outside the sending bucket to transport the material;

[0011] The gas ports are high-pressure gas ports, and at least one of the high-pressure gas ports is located above the discharge port.

[0012] According to the discharging device of some embodiments of the utility model, the sending bucket is provided with a discharging channel at the discharging port, and the high-pressure gas port also satisfies at least one of the following conditions: Condition 1, at least one of the high-pressure gas ports is located at the discharging port and is arranged in the discharging direction; Condition 2, at least one of the high-pressure gas ports is located in the discharging channel and is arranged in the discharging direction.

[0013] Optionally, the discharge device further comprises: an air intake pipeline, the air intake pipeline comprising a high-pressure main channel and at least two branch channels. One end of the high-pressure main channel is used to connect to a high-pressure gas source; one end of the branch channel is used to connect to the other end of the high-pressure main channel, and the other end of the branch channel is used to connect to the high-pressure gas port; wherein at least on the branch channel connected to the sending bucket, a gas pressure regulating member is also provided.

[0014] In some embodiments, the first ventilation port includes a first ventilation inlet and a first ventilation outlet; the first ventilation component also includes a ventilation inlet channel, one end of the ventilation inlet channel is used to connect to a ventilation gas source, and the other end of the ventilation inlet channel is used to connect to at least one first ventilation inlet.

[0015] In some embodiments, at least one first ventilation inlet is the same as the high-pressure gas port provided in the sending bucket;

[0016] One end of the ventilation air intake channel is used to connect to a ventilation air source, and the other end of the ventilation air intake channel is used to connect to at least one of the branch channels, and the ventilation air intake channel is connected to the high-pressure air port provided in the sending bucket through the branch channel.

[0017] According to the discharging device of some embodiments of the utility model, the sending bucket is provided with at least one air port for generating an air pressure difference inside and outside the sending bucket to transport the material;

[0018] The air port is a negative pressure air port, and the negative pressure air port is the same as the discharge port.

[0019] According to some embodiments of the present invention, the discharge device of the first valve assembly at least includes a plurality of control valves arranged on the feed channel; the plurality of control valves are respectively a feeding valve, a first feeding control valve, a second feeding control valve, and a third feeding control valve, wherein the first feeding control valve is located upstream of the feeding valve, and the second feeding control valve and the third feeding control valve are located downstream of the feeding valve; an inter-valve air pressure detection device is provided between the second feeding control valve and the third feeding control valve downstream of the feeding valve.

[0020] According to some embodiments of the utility model, the discharging device further includes: a dust removal system, wherein the dust removal system is connected to the first ventilation port, and the gas output from the sending hopper is sent to the dust removal system through the first ventilation port.

[0021] In some embodiments, the silo has an inlet, an outlet and a second ventilation port, the outlet is connected to the feed channel, and the inlet is connected to the main body of the sintering furnace; the discharge device also includes a second valve assembly and a second ventilation assembly. The second valve assembly is used to control the opening and closing of the inlet; the second ventilation assembly is connected to the second ventilation port, the second ventilation assembly outputs the gas in the silo through the second ventilation port, and delivers protective gas to the silo, the protective gas is the same as the protective gas in the main body; the controller is electrically connected to the second ventilation assembly and the first valve assembly, so as to control the second ventilation assembly to open after the silo delivers materials to the sending hopper and the first valve assembly and the second valve assembly are closed; the dust removal system is connected to the second ventilation port, and the gas output from the silo is delivered to the dust removal system through the second ventilation port.

[0022] Optionally, the first ventilation component further includes a first ventilation channel, a first gas filter, a first ventilation control valve and a second ventilation control valve. One end of the first ventilation channel is connected to the first ventilation port; the first gas filter is arranged on the first ventilation channel; the first ventilation control valve is arranged on the first ventilation channel and is located upstream of the first gas filter; the second ventilation control valve is arranged on the first ventilation channel and is located downstream of the first gas filter.

[0023] According to the discharging device of some embodiments of the present invention, the sending bucket is located below the silo, the feeding port is located at the top of the sending bucket, and the discharging port is located at the bottom of the sending bucket.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a schematic diagram of the structure of the discharging device in some embodiments of the utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the sending bucket in some embodiments of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the sending bucket in other embodiments of the utility model;

[0029] Figure 4 It is a schematic diagram of the structure of the discharging device in other embodiments of the utility model;

[0030] Figure 5 It is a schematic diagram of the position of the high pressure gas port in the sending bucket of the utility model;

[0031] Figure 6 It is a schematic diagram of the position of the negative pressure air port in the sending bucket in the utility model.

[0032] Reference numerals:

[0033] Discharging device 100,

[0034] Silo 10, inlet 11, outlet 13, second ventilation port 14,

[0035] Sending bucket 20, feeding channel 21, feeding port 22, discharging port 23, discharging channel 24,

[0036] The first ventilation port 25, the first ventilation inlet 251, the first ventilation outlet 252,

[0037] Gas port 26, high pressure gas port 261, negative pressure gas port 262,

[0038] The first valve assembly 30, the feed valve 31, the first feed control valve 32, the second feed control valve 33, the third feed control valve 34,

[0039] The first ventilation component 40, the ventilation intake main channel 41, the first ventilation channel 42, the first gas filter 43, the first ventilation control valve 44, the second ventilation control valve 45,

[0040] Intake pipe 50, high pressure main road 51, branch road 52, air pressure regulating member 53,

[0041] The second valve assembly 60, the second ventilation assembly 70, the second gas filter 71, the ventilation fourth control valve 72,

[0042] Controller 80, dust removal system 90. DETAILED DESCRIPTION

[0043] The embodiments of the present invention 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 invention, and cannot be understood as limiting the present invention.

[0044] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial" and the like 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 utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Reference below Figure 1-Figure 6 The discharging device 100 according to the embodiment of the present invention is described. The application field of the discharging device 100 is not limited, for example, it can be applied in a sintering furnace or other equipment that needs to use the discharging device 100.

[0047] It is worth noting that the sintering furnace of the present application is used for the sintering of lithium iron phosphate. The sintering process of lithium iron phosphate needs to be carried out under a protective atmosphere, and the protective gas needs to be continuously introduced into the sintering furnace. After the sintering is completed, the material produced still has residual high temperature for a certain period of time. After contacting the air, it is easily oxidized by the oxygen in the air, and the iron changes from divalent to trivalent, generating iron oxide (Fe2O3) and lithium phosphate (Li3PO4), which affects the consistency of the product, and in subsequent applications, it will cause the capacity of the lithium-ion battery to decay, performance degradation or even failure, affecting the cycle life. Therefore, after the lithium iron phosphate is sintered, it needs to be strictly isolated from the air before it is thoroughly cooled to ensure product quality.

[0048] In addition, due to the large size and weight of the sintering furnace equipment, its installation height is not high to ensure installation stability. After sintering, the material is generally discharged by its own gravity. The material discharge device needs to be located lower than the main part of the sintering equipment, and some structures need to be set below the ground surface. In this case, compressed air is required to transport the material to the storage bin. The remaining air after transportation may return through the tail of the sintering furnace and enter the furnace from the tail of the furnace, affecting the inert gas atmosphere inside the furnace, causing the oxygen content to rise, which directly affects the sintering effect of the sintering furnace. Therefore, the discharge device and the tail of the sintering furnace need to be sealed to prevent external air / compressed air from returning and entering the furnace from the tail of the furnace.

[0049] In order to solve the above problems, the present application proposes a discharging device 100 .

[0050] According to the discharging device 100 of the present utility model, refer to Figure 1 As shown, it includes a silo 10 and a sending hopper 20. The silo 10 is used to be connected to the main body of the sintering furnace to collect the sintered materials.

[0051] The sending bucket 20 has a feed port 22 , and a feed channel 21 connected to the feed port 22 and the silo 10 is provided.

[0052] The sintered material can enter the feed channel 21 through the silo 10 .

[0053] like Figure 1 As shown, the sending bucket 20 includes a feed port 22, a discharge port 23 and a first ventilation port 25. The feed port 22 allows the material to smoothly enter the sending bucket 20, while the feed channel 21 connects the silo 10 and the sending bucket 20 to ensure smooth transmission of the material.

[0054] like Figure 1-Figure 4 As shown, the discharging device 100 further includes a first valve assembly 30, which is disposed on the feed channel 21 and is used to control the on-off of the feed channel 21. The first valve assembly 30 can accurately control the on-off of the feed channel 21 during material transmission, and the first valve assembly 30 is opened when it is necessary to feed materials from the silo 10 to the sending hopper 20, and the first valve assembly 30 is closed when it is not necessary to feed materials from the silo 10 to the sending hopper 20.

[0055] In addition, the first valve assembly 30 also serves to isolate the gas flow between the silo 10 and the sending hopper 20. After the material enters the sending hopper 20, the first valve assembly 30 is in a closed state, forming a tight barrier between the feeding channel 21, ensuring that the air in the sending hopper 20 does not enter the silo 10 through the feeding channel 21, thereby preventing air from entering the sintering furnace body.

[0056] In the sintering process, the atmosphere in the furnace, such as the oxygen content in the furnace atmosphere, usually needs to be strictly controlled to avoid adverse effects on the materials. If air accidentally enters the sintering furnace body, the oxygen content in the furnace atmosphere will increase, resulting in a decrease in the quality of the materials or the generation of unnecessary by-products. Therefore, it is very important to maintain the purity of the furnace atmosphere.

[0057] Therefore, after the materials in the sending bucket 20 are sent out, it is necessary to replace the internal gas before the next feeding to avoid back-gassing.

[0058] According to the discharge device 100 of some embodiments of the present application, the first valve assembly 30 includes at least a plurality of control valves disposed on the feed channel 21 .

[0059] like Figure 4 As shown, the multiple control valves are respectively a feeding valve 31, a first feeding control valve 32, a second feeding control valve 33, and a third feeding control valve 34, wherein the first feeding control valve 32 is located upstream of the feeding valve 31, and the second feeding control valve 33 and the third feeding control valve 34 are located downstream of the feeding valve 31.

[0060] The first valve assembly 30 is used to improve the opening and closing control of the discharge channel 21, thereby achieving precise control of the material flow rate.

[0061] For example, the material flow in the feed channel 21 is adjusted by the feed valve 31. When the material flow needs to be increased / decreased, the rotation speed of the feed valve 31 can be adjusted to achieve the purpose of increasing / decreasing the flow.

[0062] For another example, when it is necessary to start or stop material transportation, the first feed control valve 32 , the second feed control valve 33 and the third feed control valve 34 can be opened or closed at the same time to realize the opening and closing of the discharge channel 21 .

[0063] The setting of the above-mentioned first valve assembly 30 can effectively improve the air tightness of the feed channel 21 without causing structural redundancy and controlling costs, ensuring that the air remaining inside the sending hopper 20 after sending the material cannot enter the silo 10 through the feed channel 21, reducing gas reflux, and helping to control the oxygen content of the atmosphere in the sintering furnace, thereby ensuring product consistency. In addition, such a setting also has a certain fault response capability. For example, if the feed valve 31 fails and causes material blockage, the upstream feed first control valve 32 can be quickly closed, and the feed valve 31 can be repaired to prevent the fault from expanding. At the same time, the faulty parts can also be replaced or repaired as needed to ensure the stable operation of the entire discharge device 100.

[0064] In such Figure 4In the embodiment shown, an inter-valve air pressure detection device is also provided between the second feed control valve 33 and the third feed control valve 34 downstream of the feed valve 31. The inter-valve air pressure detection device monitors the air pressure between the two control valves. It can accurately sense the size and change of the air pressure. Based on the received air pressure data, it is possible to determine the flow state of the material in the pipeline and whether there are abnormal conditions such as blockage and leakage.

[0065] When the air pressure detection device between valves finds an abnormality, the opening and closing of the second feed control valve 33, the third feed control valve 34 and other related valves are adjusted to ensure the normal discharge of materials and prevent the air in the sending hopper 20 from reversely entering the silo 10 and the sintering furnace. This arrangement effectively prevents production accidents that may be caused by abnormal air pressure and improves the stability and reliability of the discharge device 100.

[0066] Optionally, the feed valve 31 adopts a star-shaped feed valve. This feed valve is usually composed of a central shaft and a plurality of blades evenly distributed along the shaft. When the central shaft rotates, the blades push the material forward in the discharge channel, thereby controlling the flow rate of the material. The star-shaped feed valve is particularly suitable for processing materials that are highly viscous or easily agglomerated, because it can effectively prevent material blockage by rotating.

[0067] In order to prevent the air in the sending bucket 20 from reversely entering the silo 10, the discharging device 100 further includes a first ventilation component 40, which is connected to the first ventilation port 25. The first ventilation component 40 outputs gas from the first ventilation port 25 and delivers protective gas to the sending bucket 20. The protective gas is the same as the protective gas in the sintering furnace body. The implementation of the first ventilation port 25 provided on the sending bucket 20 is not limited to one. For example, in some embodiments, the first ventilation port 25 can be an inlet and outlet. After the first ventilation component 40 absorbs the gas in the sending bucket 20 through the first ventilation port 25, it delivers protective gas to the sending bucket 20 through the first ventilation port 25. At this time, the operations of exhausting and charging are performed alternately instead of simultaneously. In other embodiments, the first ventilation port 25 is divided into a first ventilation inlet 251 and a first ventilation outlet 252. The first ventilation inlet 251 is only used to deliver gas to the sending bucket 20, and the first ventilation outlet 252 is only used to absorb gas from the sending bucket 20. At this time, the operations of exhausting and charging can be performed alternately or simultaneously.

[0068] At the same time, after the silo 10 feeds the material to the sending hopper 20, some material may remain. Due to its own gravity, this part of the material accumulates at the outlet 13 to serve as a material seal, which can prevent gas backflow.

[0069] Specifically, when the first valve assembly 30 is closed and ready to receive the next batch of materials into the sending hopper 20, the first ventilation assembly 40 will deliver the same protective gas as that in the sintering furnace body into the sending hopper 20 in advance, ensuring that the sending hopper 20 is in an environment filled with protective gas before receiving new materials.

[0070] The purpose of replacing the air in the sending hopper 20 is to prevent residual air from remaining after the material in the sending hopper 20 is sent. When the sending hopper 20 receives new material from the silo 10, the residual air enters the silo 10 and enters the sintering furnace body through the silo 10, thereby maintaining the purity of the atmosphere in the furnace. If air accidentally enters the furnace, the oxygen content in the furnace will increase, and the material in the furnace will react with the oxygen, resulting in uneven sintering of the material or the generation of other by-products.

[0071] like Figure 1 As shown, the discharging device 100 further includes a controller 80. The controller 80 is electrically connected to the first ventilation assembly 40 and the first valve assembly 30, so as to control the first ventilation assembly 40 to open when the sending bucket 20 completes sending and the first valve assembly 30 is closed.

[0072] The controller 80 is used to coordinate and manage the work of each component. The controller 80 is electrically connected to the first gas exchange component 40 and the first valve component 30, so that they can receive and send electrical signals, thereby accurately controlling their working states, reducing uncertainty during operation, and improving the reliability of the discharge device 100 and the production efficiency of the sintering furnace.

[0073] In the working process of the sintering furnace, when the sending bucket 20 completes the material sending task, the first valve assembly 30 will be closed in time to ensure the sealing of the silo 10. At this time, the controller 80 will detect the closed state of the first valve assembly 30 and send an opening signal to the first ventilation assembly 40 as a trigger condition.

[0074] After receiving the start signal, the first ventilation assembly 40 starts to work, delivering protective gas to the sending hopper 20 to replace the air remaining in the sending hopper 20 after the sending is completed, and prepares for the next work cycle of the silo 10 dropping materials into the sending hopper 20 → the sending hopper 20 sending materials backwards. The controller 80 ensures that the sending hopper 20 can get an environment full of protective gas in time every time the material is sent, thereby preventing the air in the sending hopper 20 after sending from entering the silo 10 and then entering the sintering furnace body when the silo 10 drops materials into the sending hopper 20 next time, thereby protecting the atmosphere in the furnace and the sintering quality of the materials.

[0075] According to an embodiment of the present application, a working cycle is described:

[0076] At the beginning stage: the sending hopper 20 which has been replaced and filled with protective gas will receive the material unloading signal from the upstream process, and then the controller 80 controls the first valve assembly 30 to open, and the material starts to enter the sending hopper 20 from the silo 10; when the silo 10 unloads the material into the sending hopper 20, the controller 80 controls the first gas exchange control valve 44 and the second gas exchange control valve 45 to open;

[0077] Sending stage: materials continuously enter the sending bucket 20. When the materials in the sending bucket 20 reach the set target weight, the controller 80 controls the first valve assembly 30 to close, controls the input of high-pressure gas into the sending bucket 20, and the materials in the sending bucket 20 begin to be sent to the subsequent process. When the sending bucket 20 sends materials backward, the controller 80 controls the first ventilation control valve 44 and the second ventilation control valve 45 to close.

[0078] Ventilation stage: when the material in the sending bucket 20 is sent out, the controller 80 controls the first ventilation component to open, the first ventilation control valve 44 and the second ventilation control valve 45 to open, and the ventilation gas source conveys protective gas to the sending bucket 20 through the ventilation inlet to replace the air remaining in the sending bucket 20 after the sending is completed. After the set target replacement time, the ventilation gas source is closed. At this time, the sending bucket 20 is filled with protective gas.

[0079] Next working cycle: After the ventilation is completed, continue the working cycle of starting phase → sending phase → ventilation phase.

[0080] Through the above working cycle, the discharging device 100 can ensure that after each material is sent, the sending bucket 20 can be quickly filled with protective gas, thereby effectively preventing air from entering the sintering furnace body and ensuring the atmosphere and material quality in the furnace. At the same time, the high degree of automation and precise control of the entire work process also greatly improves the production efficiency and reliability of the sintering furnace.

[0081] Optionally, the controller 80 is also highly programmable and flexible, and can adjust the working parameters of the first ventilation component 40 and the first valve component 30 according to actual production needs, such as opening and closing time, gas flow rate, etc., to adapt to different production environments and requirements.

[0082] In some embodiments, a sensor is provided on at least one of the first valve assembly 30 and the first ventilation assembly 40. The sensor can monitor the working state of the first valve assembly 30 and / or the first ventilation assembly 40 in real time, monitor abnormal conditions in time, and improve the safety of the discharging device 100.

[0083] The sintering furnace discharging device 100 of the utility model provides a safer and more reliable transmission environment for materials, and provides a strong guarantee for the continuous and efficient operation of the sintering furnace.

[0084] According to some embodiments of the present invention, the discharging device 100 is as follows: Figure 2-Figure 3 , Figure 5-Figure 6 As shown, the sending bucket 20 is provided with at least one air port 26 for generating an air pressure difference between the inside and outside of the sending bucket 20 to transport the material.

[0085] In some specific embodiments, Figure 5 As shown, the gas port 26 is a high-pressure gas port 261 , wherein at least one high-pressure gas port 26 is located above the discharge port 23 .

[0086] By providing the high-pressure gas port 26 as the power source of the sending bucket 20, the material will not be disturbed by the external environment during the transmission process, thereby ensuring the efficiency and stability of the material transmission.

[0087] The high-pressure gas port 26 is located above the discharge port 23. Such a layout enables the high-pressure gas to directly act on the material that is about to leave the sending bucket 20, providing it with sufficient power to smoothly pass through the discharge port 23. At the same time, the high-pressure gas can also effectively prevent the material from being blocked or stuck during the transmission process, ensuring the smooth discharge process.

[0088] In some optional embodiments, such as Figure 6 As shown, the air port 26 includes a negative pressure air port 262 , and the negative pressure air port 262 and the discharge port 23 are the same port.

[0089] The negative pressure air port 262 is provided mainly to generate negative pressure under certain circumstances to attract materials to leave the sending bucket 20 through the discharge port 23 .

[0090] Optionally, the gas port 26 includes at least one high-pressure gas port 261 and one negative-pressure gas port 262. When the negative-pressure gas port 262 and the high-pressure gas port 261 work simultaneously, the sending hopper 20 can quickly push the material to the discharge port 23 through the high-pressure gas. At the same time, the negative-pressure gas port 262 can use the negative pressure suction force to stably suck the material out of the discharge port 23. Among them, the high-pressure gas port 261 can ensure that the material passes through the discharge port 23 at a sufficient speed and pressure, and the negative-pressure gas port 262 can effectively prevent the discharge port 23 from being blocked.

[0091] In some embodiments, the discharge device 100 of the sintering furnace further includes a storage bin, which is connected to the discharge port 23 via a feed pipe, and the storage bin is provided with a tail gas outlet;

[0092] When negative pressure is used as the material conveying power, the discharge device 100 of the sintering furnace further includes an induced draft fan, which is connected to the tail end gas outlet. The induced draft fan is used to provide negative pressure suction to the storage bin and the sending hopper 20, so that a pressure difference is generated inside and outside the sending hopper 20, so that the internal material leaves from the negative pressure gas port 262 and enters the storage bin along the material conveying pipeline.

[0093] In some optional embodiments, a tail dust collecting device is further provided between the induced draft fan and the material storage bin to collect material dust to avoid clogging of the induced draft fan.

[0094] In such Figure 4 In the embodiment shown, a pressure detection gauge is provided on the sending bucket 20. It can monitor the pressure change of the sending bucket 20 in real time to ensure that the sending bucket 20 operates within the normal working range. When the pressure exceeds or falls below the set safety range, the pressure detection gauge will sound an alarm to remind the operator to take timely measures to avoid accidents.

[0095] like Figure 2 As shown, according to the discharging device 100 of some embodiments of the present invention, the sending bucket 20 is provided with a discharging channel 24 at the discharging port 23, and the high-pressure gas port 26 also satisfies at least one of the following conditions:

[0096] Condition 1: at least one high-pressure gas port 26 is located at the discharge port 23 and is arranged toward the discharge direction;

[0097] Condition 2: at least one high-pressure gas port 26 is located on the discharge channel 24 and is arranged toward the discharge direction.

[0098] When at least one high-pressure gas port 26 is located at the discharge port 23 and is arranged toward the discharge direction, the high-pressure gas coming out of the high-pressure gas port 26 has the functions of pushing the material, cleaning the discharge port 23, and preventing blockage.

[0099] When at least one high-pressure gas port 26 is located on the discharge channel 24 and is arranged toward the discharge direction, the high-pressure gas can directly act on the surface of the material. When the high-pressure gas is ejected from the gas port, it will form a driving force to help the material move faster and more smoothly along the discharge channel 24. This greatly reduces the risk of material accumulation and blockage in the channel and ensures the continuity of discharge.

[0100] Secondly, the high-pressure gas port 26 is arranged toward the discharge direction, ensuring that the gas injection direction is consistent with the material movement direction, which not only improves the gas utilization efficiency, but also avoids the gas from scouring and wearing the inner wall of the discharge channel 24, thereby extending the service life of the equipment.

[0101] Optionally, in some embodiments not shown in the figure, the discharge port 23 also includes at least one of a material level detector, a pressure detector and a temperature detector. This arrangement can increase the safety protection mechanism, such as ensuring that the discharge device 100 can automatically shut down or take emergency measures under abnormal circumstances to prevent damage to the sintering furnace or production accidents.

[0102] According to some embodiments of the present invention, the discharging device 100 further includes an air inlet pipe 50, such as Figure 3As shown, the air intake pipeline 50 includes a high-pressure main channel 51 and at least two branch channels 52. This arrangement can ensure that the material is efficiently and continuously sent to the subsequent process.

[0103] One end of the high-pressure main channel 51 is used to connect to a high-pressure gas source. As the main channel of the air intake pipeline 50 , it is responsible for transporting the high-pressure gas from the high-pressure gas source to the branch channel 52 .

[0104] Due to the high-pressure characteristics of high-pressure gas, the main road can ensure that the gas maintains sufficient power and stability during transmission.

[0105] One end of the branch road 52 is used to connect to the other end of the high-pressure main road, and the other end of the branch road 52 is used to connect to the high-pressure gas port 26. This connection method ensures that high-pressure gas can flow smoothly from the main road into the branch road 52 and further be transported to the designated position of the sending bucket 20.

[0106] Among them, at least on the branch road 52 connected to the sending bucket 20, there is also a gas pressure regulating member 53. The gas pressure regulating member 53 can adjust the flow rate and pressure of the high-pressure gas in the high-pressure gas port 26 to achieve control of the material conveying speed. The flexibility of the discharging device 100 to adapt to materials of different specifications and types is improved, and the discharging device 100 can adapt to the working environment under different production requirements.

[0107] In such Figure 3 In the illustrated embodiment, the sending hopper 20 includes two high-pressure gas ports 26 , one located above the sending hopper 20 and the other located at the discharge port 23 of the sending hopper 20 .

[0108] The air intake pipeline 50 includes a high-pressure main channel 51 and two branch channels 52. One end of the high-pressure main channel 51 is used to connect to a high-pressure gas source, and the other end is connected to the two branch channels 52. One of the branch channels 52 is used to connect to the high-pressure gas port 26 above the sending hopper 20, and the other branch channel 52 is used to connect to the high-pressure gas port 26 at the discharge port 23.

[0109] Accordingly, the intake volume of compressed air can be increased, thereby improving the material discharge speed.

[0110] According to some embodiments of the present invention, the discharging device 100 is as follows: Figure 2-Figure 3 As shown, the first ventilation port 25 includes a first ventilation inlet 251 and a first ventilation outlet 252 .

[0111] In some optional embodiments, at least one first ventilation inlet 251 and a high-pressure gas port 26 are the same port.

[0112] The first ventilation inlet 251 is used to feed high-pressure gas into the sending bucket 20, which helps the high-pressure gas to flow smoothly in the sending bucket 20. The strong thrust of the high-pressure gas can effectively overcome the friction and adhesion between the materials, ensuring that the materials can be discharged from the sending bucket 20 smoothly.

[0113] When the first ventilation inlet 251 and a high-pressure gas port 26 are the same port, it is possible to avoid setting up redundant gas ports on the sending hopper 20. All gas flows can enter the sending hopper 20 through the high-pressure gas port 26 and be managed by the gas pressure regulating valve, simplifying the structure of the discharging device 100.

[0114] Each port is a potential leak or maintenance point, and reducing the number of ports means reducing potential sources of failure, thereby reducing maintenance workload.

[0115] In some other embodiments, the first ventilation inlet 251 and the high-pressure gas port 26 can be separately provided, or a plurality of first ventilation inlets 251 and first ventilation outlets 252 can be reasonably arranged according to the shape and volume of the hopper 20 to improve the replacement efficiency.

[0116] According to some embodiments of the present invention, the discharging device 100 is as follows: Figure 2-Figure 3 As shown, the first ventilation component 40 also includes: a ventilation air intake main channel 41, one end of the ventilation air intake main channel 41 is used to connect to a ventilation air source, and the other end of the ventilation air intake main channel 41 is used to connect to at least one branch channel 52, and the ventilation air intake main channel 41 is connected to the high-pressure air port 26 provided in the sending bucket 20 through the branch channel 52.

[0117] like Figure 3 As shown, the ventilation air intake trunk 41 is the main channel of the first ventilation assembly 40, responsible for transporting the protective gas from the ventilation gas source to the branch trunk 52. This arrangement takes into account factors such as the flow rate, pressure and stability of the protective gas, ensures that the protective gas can flow smoothly and efficiently, and improves the replacement efficiency of the protective gas in the sending bucket 20.

[0118] The branch roads 52 are separated from the ventilation intake main road 41, and the number of the branch roads 52 is determined according to actual needs. They transport gas from the main road to the first ventilation port 25, i.e., the high-pressure gas port 26, of the sending bucket 20 to achieve the replacement of the protective gas.

[0119] The function of the branch channel 52 is to ensure that the shielding gas encounters minimal resistance during the transmission process by reasonably designing its length and diameter, thereby improving the utilization efficiency of the shielding gas.

[0120] Furthermore, the branch road 52 can be flexibly adjusted and optimized according to different application scenarios.

[0121] Optionally, the branch roads 52 are arranged in a straight line. In this scenario, the branch roads 52 can be arranged in a straight line along the axis of the sending bucket 20. This arrangement can ensure that the resistance encountered by the gas during the transmission process is minimal, thereby improving the utilization efficiency of the protective gas. At the same time, the branch roads 52 arranged in a straight line are also easy to install and maintain, reducing the complexity and maintenance cost of the discharge device 100.

[0122] Optionally, the branch channel 52 adopts a branching arrangement. By setting branch points at different positions, the protective gas can be diverted to different directions. This arrangement can ensure that the protective gas is evenly distributed inside the sending bucket 20, thereby improving the effect of gas replacement.

[0123] In addition, the branch channel 52 is connected to the high-pressure gas port 26. The injection angle of the high-pressure gas port 26 is utilized to achieve efficient air intake, facilitate management, make the gas flow more concentrated and orderly, and reduce the risk of gas leakage.

[0124] According to some embodiments of the present invention, the discharging device 100 further includes a dust removal system 90. Figure 2-Figure 4 As shown, the dust removal system 90 is connected to the first ventilation port 25 , and the gas output from the sending hopper 20 is sent to the dust removal system 90 through the first ventilation port 25 .

[0125] The main purpose of the dust removal system 90 is to collect material dust in the gas output from the sending hopper 20. This dust is mainly dust generated during the material transmission process. Through the dust removal system 90, it can be ensured that this dust will not be directly discharged into the environment with the gas, protecting the environment and ensuring compliance with environmental protection requirements.

[0126] In some embodiments, Figure 2-Figure 3 As shown, the dust removal system 90 is connected to the first ventilation outlet 252 in the first ventilation port 25 .

[0127] Then, after the protective gas enters the sending hopper 20, due to the driving effect of the protective gas, the original air in the sending hopper 20 will be gradually squeezed and flow into the dust removal system 90 through the first ventilation outlet 252, and will be discharged uniformly after dust removal.

[0128] In some embodiments, Figure 4 As shown, the silo 10 has an inlet 11, an outlet 13 and a second ventilation port 14, the outlet 13 is connected to the feed channel 21, and the inlet 11 is connected to the main body of the sintering furnace.

[0129] The inlet 11 is the passage for the material to enter the silo 10, which is connected to the main body of the sintering furnace to ensure that the material can be smoothly transferred from the sintering furnace to the silo 10. The outlet 13 is the passage for the material to leave the silo 10, which is connected to the feed channel 21, so that the material can smoothly enter the next processing stage.

[0130] The discharging device 100 further includes a second valve component 60 and a second ventilation component 70 .

[0131] Among them, the second valve assembly 60 is used to control the opening and closing of the inlet 11. For the intermittent production sintering furnace, when it is necessary to add materials to the silo 10, the second valve assembly 60 can be opened; when the discharge is completed or the amount of material in the silo 10 reaches the set value, the system will close the second valve assembly 60, thereby realizing precise control of the material entering the silo 10; and for the continuous production sintering furnace, such as the rotary sintering furnace for lithium iron phosphate, the silo 10 is ventilated before starting production. During the production stage, the second valve assembly 60 is in a normally open state.

[0132] like Figure 4 As shown, the second ventilation assembly 70 is connected to the second ventilation port 14, and the second ventilation assembly 70 outputs the gas in the silo 10 through the second ventilation port 14, and delivers protective gas to the silo 10, and the protective gas is the same as the protective gas in the main body. Through the second ventilation port 14, the gas inside the silo 10 can be replaced or adjusted, thereby ensuring that the material is in the silo 10 in an atmosphere of protective gas.

[0133] The second valve assembly 60 can be a manual valve or an electric valve.

[0134] In some embodiments, Figure 4 As shown, the controller 80 is electrically connected to the second ventilation assembly 70, the first valve assembly 30 and the second valve assembly 60. The controller 80 improves the automation and intelligence of the discharging device 100. Through this electrical connection, not only the first valve assembly 30 and the second valve assembly 60 are accurately controlled, but also the controller 80 can adjust the working state of the second ventilation assembly 70 in real time.

[0135] Before production starts, when the first valve assembly 30 is in a closed state, the controller 80 sends a command to the second ventilation assembly 70 to open it. The purpose of this is to discharge the air in the silo 10 through the second ventilation port 14 so that the silo 10 is filled with protective gas to wait for the entry of materials during production.

[0136] Optionally, the controller 80 can adjust the working parameters of the second ventilation component 70, such as gas flow rate, ventilation time, etc., according to actual needs to meet different production requirements.

[0137] Optionally, the second ventilation component 70 further includes a second gas filter 71 and a fourth ventilation control valve 72 .

[0138] The second gas filter 71 can intercept dust in the output gas.

[0139] The fourth ventilation control valve 72 can control the flow rate of the air discharged from the second ventilation port 14 , thereby adjusting the air pressure inside the silo 10 .

[0140] The dust removal system 90 is connected to the second ventilation port 14, and the gas output from the silo 10 is sent to the dust removal system 90 through the second ventilation port 14. It is ensured that the gas output from the silo 10 can be effectively processed by the dust removal system 90, thereby ensuring that the gas after dust removal is clean and meets environmental protection requirements.

[0141] According to some embodiments of the discharging device 100, Figure 4 As shown, the first ventilation component 40 further includes a first ventilation channel 42 , a first gas filter 43 , a first ventilation control valve 44 , and a second ventilation control valve 45 .

[0142] One end of the first ventilation channel 42 is connected to the first ventilation port 25. The first ventilation channel 42 is used to connect the first ventilation port 25 and the dust removal system 90, and provides a smooth passage so that the gas output from the sending hopper 20 can smoothly enter the dust removal system 90 for further processing.

[0143] The first gas filter 43 is arranged on the first ventilation channel 42. The first gas filter 43 is used for physical filtration and can also be equipped with an adsorbent, which can effectively remove harmful gases in the output gas. When the gas output from the sending hopper 20 passes through the adsorbent, the harmful gas will be adsorbed on the surface and no longer circulate, which plays a role in protecting the environment. In addition, the corrosion and damage of harmful gases to the equipment can be reduced, the service life of the dust removal system 90 can be extended, and the operating efficiency of the entire discharge device 100 can be improved.

[0144] The first ventilation control valve 44 is arranged on the first ventilation channel 42 and is located upstream of the first gas filter 43. The gas flow rate entering the first gas filter 43 can be controlled. By adjusting the opening of the valve, the gas flow rate and speed can be accurately controlled to avoid overloading or underloading the filter, thereby ensuring that the first gas filter 43 can work stably and efficiently.

[0145] In order to increase production capacity, multiple sintering furnaces are usually arranged in parallel during the actual production process. In order to save resources, the same dust removal system 90 is often used in the discharge devices 100 of multiple sintering furnaces to synchronously provide ventilation air source power to the silos 10 and the sending buckets 20 of the multiple sintering furnaces and perform ventilation exhaust gas treatment. However, the ventilation timing of the discharge devices 100 of different sintering furnaces is different. Therefore, when the discharge device 100 of a certain sintering furnace is ventilating, the discharge device 100 of another sintering furnace connected to the same dust removal system 90 does not need to be ventilated, and the corresponding first ventilation control valve 44 is closed, while the dust removal system 90 is always on, which will continuously generate negative pressure on the first gas filter 43 through the first ventilation channel 42, which may easily cause the first gas filter 43 to overload and affect its service life.

[0146] In view of this, in some embodiments, a second ventilation control valve 45 is provided on the first ventilation channel 42 and is located downstream of the first gas filter 43. The second ventilation control valve 45 is mainly used to adjust the pressure of the gas processed by the first gas filter 43. By controlling the opening of the valve, the pressure of the gas can be adjusted, and when ventilation is not required, it can avoid the dust removal system 90 continuously generating negative pressure and causing the gas filter 43 to be overloaded.

[0147] At the same time, the first ventilation control valve 44 and the second ventilation control valve 45 can also play the role of isolation and protection. When the first gas filter 43 needs to be replaced or repaired, the first gas filter 43 can be isolated by closing the first ventilation control valve 44 and the second ventilation control valve 45 to prevent gas from directly flowing in or out, thereby protecting the safety of operators and improving maintenance efficiency.

[0148] According to some embodiments of the present invention, the discharging device 100 is as follows: Figure 1 , Figure 4 As shown, the sending bucket 20 is located below the silo 10 , the feed port 22 is located at the top of the sending bucket 20 , and the discharge port 23 is located at the bottom of the sending bucket 20 .

[0149] During the discharging process, the material falls from the silo 10 to the sending bucket 20 by its own gravity and is discharged through the discharging port 23 at the bottom. This arrangement can simplify the discharging process and reduce energy consumption and maintenance costs.

[0150] In the present application, the protective gas is an inert gas. The inert gas includes but is not limited to nitrogen, helium, argon and their mixed gases. The use of inert gas can prevent lithium iron phosphate from undergoing oxidation reaction during high-temperature sintering, thereby affecting the purity of the material and avoiding negative impact on the electrochemical properties of the material.

[0151] Preferably, the protective gas is nitrogen, which can effectively remove oxygen in the discharging device 100, thereby inhibiting the occurrence of oxidation reaction and ensuring the purity of the material.

[0152] Below, refer to the attached Figure 1-Figure 4 , describing a discharging device 100 according to a specific embodiment of the present application.

[0153] Reference Figure 1-Figure 4 The discharging device 100 includes a silo 10, a sending bucket 20, a first valve assembly 30, a first ventilation assembly 40, an air intake pipe 50, a second valve assembly 60, a second ventilation assembly 70, a controller 80 and a dust removal system 90.

[0154] Reference Figure 2-Figure 3 The sending bucket 20 includes a feed channel 21, a feed port 22, a discharge port 23, a discharge channel 24, a first ventilation port 25, and two high-pressure gas ports 26.

[0155] The sending hopper 20 is located below the silo 10 , the feeding port 22 is located at the top of the sending hopper 20 , and the discharging port 23 is located at the bottom of the sending hopper 20 .

[0156] A feed channel 21 is connected between the feed port 22 and the silo 10. A first valve assembly 30 is provided on the feed channel 21 to control the on and off of the feed channel 21.

[0157] The first ventilation component 40 is connected to the first ventilation port 25 , and the first ventilation component 40 outputs gas from the first ventilation port 25 and delivers protective gas to the sending hopper 20 .

[0158] The sending bucket 20 is provided with a discharge channel 24 at the discharge port 23 .

[0159] One of the high pressure gas ports 26 is disposed above the discharge port 23, on the inner wall of the discharge channel 24, and faces the discharge direction. The other high pressure gas port 26 is located at the discharge port 23 and faces the discharge direction.

[0160] The air intake pipe 50 includes a high-pressure main channel 51 , two branch channels 52 , and an air pressure regulating member 53 .

[0161] One end of the high-pressure main channel 51 is used to connect to a high-pressure gas source, and the other end is used to connect to two branch channels 52 .

[0162] One end of one of the branch channels 52 is connected to the other end of the high-pressure channel, and the other end is used to connect to the high-pressure gas port 26. The gas pressure regulating member 53 is arranged on the branch channel 52.

[0163] The first ventilation port 25 includes two first ventilation inlets 251 and a first ventilation outlet 252 .

[0164] The two first ventilation inlets 251 correspond to the two high-pressure gas ports 26 respectively.

[0165] The first ventilation component 40 includes a ventilation intake main channel 41 , a first ventilation channel 42 , a first gas filter 43 , a ventilation first control valve 44 and a ventilation second control valve 45 .

[0166] The ventilation intake main passage 41 is in communication with the first ventilation inlet 251 .

[0167] The first ventilation passage 42 , the first gas filter 43 , the first ventilation control valve 44 , the second ventilation control valve 45 are in communication with the first ventilation outlet 252 .

[0168] One end of the ventilation air intake main channel 41 is used to connect to a ventilation air source, and the other end of the ventilation air intake main channel 41 is connected to two branch channels 52 .

[0169] The silo 10 includes an inlet 11 , an outlet 13 and a second ventilation port 14 .

[0170] The inlet 11 is connected to the main body of the sintering furnace, and the outlet 13 is connected to the feeding channel 21 of the sending hopper 20 .

[0171] The second valve assembly 60 is used to control the opening and closing of the inlet 11 of the silo 10 .

[0172] The second ventilation assembly 70 includes a second gas filter 71 and a ventilation fourth control valve 72 .

[0173] The fourth ventilation control valve 72 is connected to the second ventilation port 14 , and the second gas filter 71 is disposed downstream of the fourth ventilation control valve 72 .

[0174] Referring to FIG. 4 , the controller 80 is electrically connected to the first ventilation assembly 40 , the second ventilation assembly 70 , the first valve assembly 30 , and the second valve assembly 60 , respectively.

[0175] Reference Figure 4 The dust removal system 90 is connected to the first ventilation outlet 252 and the second ventilation outlet 14 respectively.

[0176] One end of the first ventilation channel 42 is connected to the first ventilation port 25. The first gas filter 43 is disposed on the first ventilation channel 42. The first ventilation control valve 44 and the second ventilation control valve 45 are both disposed on the first ventilation channel 42 and are located upstream and downstream of the first gas filter 43, respectively.

[0177] The first valve assembly 30 includes a feed valve 31 , a first feed control valve 32 , a second feed control valve 33 and a third feed control valve 34 , which are arranged on the feed passage 21 .

[0178] The first feed control valve 32 is located upstream of the feed valve 31 , and the second feed control valve 33 and the third feed control valve 34 are located downstream of the feed valve 31 in sequence.

[0179] Other components of the discharge device according to the embodiment of the utility model, such as the sintering furnace and the like, and the operation are known to those skilled in the art and will not be described in detail here.

[0180] In the description of this specification, the description with reference to the terms "embodiment", "example", 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 utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0181] Although the embodiments of the present invention 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 invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A discharging device for a sintering furnace, It is characterized in that include: A silo, which is connected to the main body of the sintering furnace to collect the sintered materials; A sending bucket, the sending bucket having a feed inlet, a discharge port and a first ventilation port, and a feed channel connected to the feed inlet and the silo is provided; A first valve component, which is disposed on the feed channel and is used to control the on-off of the feed channel; A first ventilation component, the first ventilation component is connected to the first ventilation port, the first ventilation component outputs gas from the first ventilation port and delivers protective gas to the sending hopper, and the protective gas is the same as the protective gas in the main body; A controller is electrically connected to the first ventilation component and the first valve component to control the first ventilation component to open when the sending bucket completes sending and the first valve component is closed.

2. The discharging device of the sintering furnace according to claim 1, It is characterized in that The sending bucket is provided with at least one air port for generating an air pressure difference inside and outside the sending bucket to transport the material; The gas ports are high-pressure gas ports, and at least one of the high-pressure gas ports is located above the discharge port.

3. The discharging device of the sintering furnace according to claim 2, It is characterized in that The sending bucket is provided with a discharge channel at the discharge port, and the high-pressure gas port also satisfies at least one of the following conditions: Condition 1: at least one of the high-pressure gas ports is located at the discharge port and is arranged toward the discharge direction; Condition 2: at least one of the high-pressure gas ports is located in the discharge channel and is arranged toward the discharge direction.

4. The discharging device according to claim 3, It is characterized in that The discharging device further comprises: an air intake pipeline, wherein the air intake pipeline comprises: A high-pressure trunk road, one end of which is used to connect to a high-pressure gas source; At least two branch trunks, one end of the branch trunk is used to connect to the other end of the high-pressure main trunk, and the other end of the branch trunk is used to connect to the high-pressure gas port; Among them, at least on the branch road connected to the sending bucket, an air pressure regulating part is also provided.

5. The discharging device according to claim 4, It is characterized in that The first ventilation port includes a first ventilation inlet and a first ventilation outlet; the first ventilation component also includes a ventilation inlet channel, one end of the ventilation inlet channel is used to connect to a ventilation gas source, and the other end of the ventilation inlet channel is used to connect to at least one first ventilation inlet.

6. The discharging device according to claim 5, It is characterized in that At least one first ventilation inlet is the same as the high-pressure gas port provided in the sending bucket; One end of the ventilation air intake channel is used to connect to a ventilation air source, and the other end of the ventilation air intake channel is used to connect to at least one of the branch channels, and the ventilation air intake channel is connected to the high-pressure air port provided in the sending bucket through the branch channel.

7. The discharge device of the sintering furnace according to claim 1, It is characterized in that The sending bucket is provided with at least one air port for generating an air pressure difference inside and outside the sending bucket to transport the material; The air port is a negative pressure air port, and the negative pressure air port is the same as the discharge port.

8. The discharge device of the sintering furnace according to claim 1, It is characterized in that The first valve assembly includes at least a plurality of control valves arranged on the feed channel; the plurality of control valves are respectively a feed valve, a first feed control valve, a second feed control valve, and a third feed control valve, wherein the first feed control valve is located upstream of the feed valve, and the second feed control valve and the third feed control valve are located downstream of the feed valve; an inter-valve air pressure detection device is provided between the second feed control valve and the third feed control valve downstream of the feed valve.

9. The discharging device according to any one of claims 1 to 8, It is characterized in that Also includes: A dust removal system is connected to the first ventilation port, and the gas output from the sending hopper is sent to the dust removal system through the first ventilation port.

10. The discharging device according to claim 9, It is characterized in that The silo has an inlet, an outlet and a second ventilation port, the outlet is connected to the feed channel, and the inlet is connected to the main body of the sintering furnace; The discharging device also includes: a second valve assembly, the second valve assembly being used to control the opening and closing of the inlet; a second ventilation component, the second ventilation component being connected to the second ventilation port, the second ventilation component outputting the gas in the silo through the second ventilation port and delivering a protective gas into the silo, the protective gas being the same as the protective gas in the main body; The controller is electrically connected to the second ventilation component and the first valve component, so as to control the second ventilation component to open after the silo delivers materials to the sending hopper and when the first valve component and the second valve component are both closed; The dust removal system is connected to the second ventilation port, and the gas output from the silo is sent to the dust removal system through the second ventilation port.

11. The discharging device according to claim 1, It is characterized in that The first ventilation component also includes: a first ventilation channel, one end of which is connected to the first ventilation port; A first gas filter, disposed on the first ventilation channel; a first ventilation control valve, provided on the first ventilation passage and located upstream of the first gas filter; The second ventilation control valve is arranged on the first ventilation passage and is located downstream of the first gas filter.

12. The discharging device according to any one of claims 1 to 8, It is characterized in that The sending bucket is located below the silo, the feeding port is located at the top of the sending bucket, and the discharging port is located at the bottom of the sending bucket.

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