High-temperature powder reverse-pressure air-locking discharge valve and control method

Abstract

The invention discloses a high-temperature powder reverse-pressure air-locking discharging valve and a control method, and relates to the technical field of raw material conveying, the high-temperature powder reverse-pressure air-locking discharging valve comprises a pipeline which forms a set included angle with the ground, the upper end of the pipeline is a raw material inlet end, a valve set is arranged in the pipeline, and the valve set comprises a plurality of valve structures which are sequentially arranged in the axis direction of the pipeline; a temporary storage channel is formed between every two adjacent valve structures. The valve group has a first working condition and a second working condition; when the valve group is in a first working condition, all the valve structures are in a closed state; and when the valve group is in the second working condition, at least one valve structure is in an open state, and at least one valve structure is in a closed state. By means of the structural design, raw materials can be conveyed from the low-pressure supply side to the high-pressure transfer side under the condition that pressure does not need to be supplemented, the valve body is simple in design, the valve body can be assembled only through the pipeline and the corresponding valve structure, and cost is relatively low.

Description

Technical Field

[0001] This invention relates to the field of raw material conveying technology, specifically to a high-temperature powder reverse pressure airlock unloading valve and its control method. Background Technology

[0002] When raw materials are transported, there are three situations depending on the pressure on the transfer side and the supply side: one is that the pressure on the transfer side is lower than the pressure on the supply side, another is that the pressure on the transfer side is equal to the pressure on the supply side, and the last is that the pressure on the transfer side is higher than the pressure on the supply side. The first two situations can be achieved through common structures, while the last situation usually requires complex structures or steps.

[0003] When the pressure on the transfer side is higher than that on the supply side, a common approach is to apply additional pressure to the material on the supply side to bring it to the same level as the supply side pressure, so as to achieve normal material transport. However, this approach requires additional pressurization equipment and an environment that allows the material to be pressurized. Furthermore, when the pressure difference is too large, additional requirements are placed on the pressurization equipment and methods, resulting in higher additional costs and more complex structural design. Summary of the Invention

[0004] The present invention aims to solve the problem that the design and manufacturing structure of existing solutions are relatively complex and costly when raw materials need to be transferred from a low-pressure side to a high-pressure side during transportation.

[0005] To solve the above problems, the present invention provides a high-temperature powder reverse pressure airlock unloading valve, including a pipeline arranged at a set angle to the ground, wherein the upper end of the pipeline is the raw material inlet end, and a valve group is provided in the pipeline. The valve group includes multiple valve structures arranged sequentially along the axial direction of the pipeline, and a temporary storage channel is formed between two adjacent valve structures. The valve assembly has a first operating condition and a second operating condition; When the valve group is in the first operating condition, all valve structures are in the closed state; When the valve assembly is in the second operating condition, at least one valve structure is in the open state and at least one valve structure is in the closed state.

[0006] The high-temperature powder reverse pressure airlock discharge valve provided by this invention has, but is not limited to, the following beneficial effects compared with the prior art: Taking a pipeline with three valve structures as an example, the three valve structures are named a1, a2 and a3 from top to bottom. There are two temporary storage channels in the pipeline. Let the upper temporary storage channel be b1 and the lower temporary storage channel be b2. One possible solution for the second operating condition is as follows: First, open the valve structure closest to the raw material inlet, namely a1, so that the raw material enters b1 from the low-pressure supply side through a1; then close a1, and then open a2 to connect b1 and b2, allowing the raw material in b1 to enter b2; finally, close a2, open a3 to connect b2 with the transfer side pipeline, and allow the raw material in b2 to be discharged from b2. Then repeat the above steps until the raw material is completely discharged.

[0007] The above structural design enables the transport of raw materials from the low-pressure supply side to the high-pressure transfer side without the need for additional pressure. The valve body design is simple and can be assembled from only pipes and corresponding valve structures, resulting in relatively low cost.

[0008] As a further aspect of the present invention: the pipeline includes a valve installation pipe and an intermediate pipe, wherein the valve installation pipe and the intermediate pipe are arranged alternately along the axial direction of the pipeline, and the valve installation pipe is sealed to the corresponding intermediate pipe.

[0009] As a further embodiment of the present invention: the valve structure includes a power source disposed outside the valve mounting pipe and a corresponding airlock valve installed inside the valve mounting pipe. One end of the rotating shaft inside the airlock valve penetrates the wall of the valve mounting pipe and extends to its outer side. The output end of the power source is connected to the extended end of the rotating shaft on the corresponding airlock valve.

[0010] As a further aspect of the present invention: the power source includes a housing fixed to the valve mounting pipe, a cylinder rotatably connected to the underside of the housing, a crank rotatably connected to the output end of the cylinder, and the other end of the crank being fixedly connected to the extended end of the rotating shaft on the corresponding airlock valve.

[0011] As a further embodiment of the present invention: a through hole is provided at a corresponding position on the valve mounting pipe, and the rotating shaft of the corresponding airlock valve passes through the through hole. A sleeve is provided in the through hole, a sealing box is provided in the sleeve, and a pressure cap is provided in the sealing box. The sleeve and the sealing box are fixed to the wall of the corresponding valve mounting pipe by fasteners, and the pressure cap is fixed to the sealing box by fasteners. The sealing box and the pressure cap are both sealed to the rotating shaft of the corresponding airlock valve.

[0012] As a further aspect of the present invention: the inner cross-section of the valve mounting pipe along its length is a square surface.

[0013] As a further aspect of the present invention: square-to-round pipes are sealed and connected to the valve mounting pipes located at both ends of the pipeline.

[0014] As a further aspect of the present invention: the airlock valve includes a valve plate fixed on a rotating shaft, the valve plate being located inside the pipeline and used to seal one end of the corresponding temporary storage channel, and a counterweight being fixed at the end of the rotating shaft away from the power source.

[0015] As a further aspect of the present invention: the valve plate and the rotating shaft inside the airlock valve are both made of heat-resistant steel.

[0016] A control method for a high-temperature powder reverse pressure airlock unloading valve, employing the aforementioned high-temperature powder reverse pressure airlock unloading valve, includes the following steps: S1: Control at least one valve structure to be in the open state, and at the same time control at least one valve structure to be in the closed state.

[0017] The present invention also provides a control method for a high-temperature powder reverse pressure airlock unloading valve, which has the following beneficial effects compared with the prior art: by designing the above-mentioned control method, the unloading valve can realize the reverse pressure transportation of raw materials by regularly controlling the opening and closing of different valves when facing reverse pressure conveying materials, simplifying the control difficulty and reducing the design cost. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an enlarged three-dimensional structural diagram of the cooperation between a single valve mounting pipe and the valve structure in this invention; Figure 3 This is an enlarged planar structural diagram of the cooperation between a single valve mounting pipe and the valve structure in this invention; Figure 4 This is a first-view enlarged cross-sectional view of a single valve mounting pipe in this invention; Figure 5 This is a second-view enlarged cross-sectional view of a single valve mounting pipe in this invention; Figure 6 yes Figure 4 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Pipeline; 2. Temporary storage channel; 3. Valve structure; 4. Valve installation pipe; 5. Intermediate pipe; 6. Counterweight; 7. Airlock valve; 8. Housing; 9. Cylinder; 10. Crank; 11. Sleeve; 12. Sealing box; 13. Gland; 14. Square-to-round pipe; 15. Valve plate; 16. Shaft. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0022] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0026] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0027] like Figure 1 and Figure 2 As shown, a high-temperature powder reverse pressure airlock unloading valve includes a pipeline 1 arranged at a set angle to the ground. The upper end of the pipeline 1 is the raw material inlet end. A valve group is provided inside the pipeline 1. The valve group includes multiple valve structures 3 arranged sequentially along the axial direction of the pipeline 1. A temporary storage channel 2 is formed between two adjacent valve structures 3. The valve group has a first working condition and a second working condition. When the valve group is in the first working condition, all valve structures 3 are in the closed state. When the valve group is in the second working condition, at least one valve structure 3 is in the open state and at least one valve structure 3 is in the closed state.

[0028] In this embodiment, the raw material inlet end of pipeline 1 can be connected to the low-pressure supply side, while the other end of pipeline 1 can be connected to the high-pressure transfer side. When it is necessary to transfer materials from the low-pressure supply side to the high-pressure transfer side, the valve structure 3 closest to the raw material inlet end can be opened first, opening one side of the corresponding temporary storage channel 2 and connecting it to the pipeline on the low-pressure supply side. This allows gas to flow between the temporary storage channel 2 and the pipeline on the low-pressure supply side, gradually forming a pressure balance. After the pressure balance is achieved, since pipeline 1 is arranged at a certain angle to the ground, the raw material in the pipeline on the low-pressure supply side will slide down under the influence of gravity along the axial direction of pipeline 1 and enter the temporary storage channel 2 that is open on one side. After opening the valve structure 3 for a certain period of time, the valve structure 3 is closed, and the valve structure 3 at the other end of the temporary storage channel 2 containing a certain amount of raw material is opened. At this time, there are two possibilities: One is that after opening another valve structure 3, this valve structure 3 is directly facing the pipeline on the high-pressure transfer side. At this time, the temporary storage channel 2 is connected to the pipeline on the high-pressure transfer side to achieve air pressure balance. Then, the raw materials in the temporary storage channel 2 can enter the pipeline on the high-pressure transfer side under the action of gravity. Secondly, after opening another valve structure 3, this valve structure 3 corresponds to another empty temporary storage channel 2. At this time, the empty temporary storage channel 2 is connected to the temporary storage channel 2 with a certain amount of material stored. The air pressure is balanced, and a certain amount of material in the temporary storage channel 2 with a certain amount of material stored enters the empty temporary storage channel 2 below under the action of gravity. Then, the valve structure 3 that was opened at this time is closed, and the above operation is repeated until the material enters the pipeline on the high-pressure transfer side.

[0029] Furthermore, taking the case where there are three valve structures 3 on the pipeline 1 as an example, the three valve structures 3 are named a1, a2 and a3 from top to bottom. At this time, there are two temporary storage channels 2 in the pipeline 1. Let the upper temporary storage channel 2 be b1 and the lower temporary storage channel 2 be b2. One possible implementation method for the second working condition is as follows: First, open valve structure 3, i.e., a1, which is closest to the raw material inlet, so that the raw material enters b1 from the low-pressure supply side through a1; then close a1, and then open a2 to connect b1 and b2, and let the raw material in b1 enter b2; finally, close a2, open a3 to connect b2 and the transfer side pipeline, and let the raw material in b2 be discharged from b2, and then repeat the above steps until the raw material is completely discharged. The second possible implementation method in the second working condition is as follows: alternately switch between two states: opening a1 and a3 and closing a2, and closing a1 and a3 and opening a2. First, open a1 and a3, at which time the raw material enters b1 from the low-pressure supply side through a1; then close a1 and a3 and open a2, at which time b1 and b2 are connected, allowing the raw material to enter b2 from b1; then close a2 and continue to open a1 and a3, at which time b2 is connected to the transfer side pipeline, allowing the raw material in b2 to be discharged from b2. At the same time, b1 is connected to the low-pressure supply side pipeline, and the raw material can enter b1 for temporary storage. Then repeat the above steps until the raw material is completely discharged. The third possible implementation method in the second working condition is as follows: alternately switch between two states: opening a1 and a2 and closing a3, and closing a1 and a2 and opening a3. First, open a1 and a2 so that b1 and b2 are connected to the low-pressure supply side pipeline, so that the raw material enters b2 along b1 through the open a1 and a2. Then close a1 and a2, open a3 so that b2 is connected to the transfer side pipeline, and let the raw material in b2 be discharged from b2. Then repeat the above steps until the raw material is completely discharged. The fourth possible implementation method in the second working condition is similar to the third method, except that it alternates between the two states of opening a1 and closing a2 and a3, and closing a1 and opening a2 and a3. The specific process will not be described in detail. The first possible implementation method ensures that there are two closed valve structures 3 at the same time, which makes the unloading valve sealing effect better and the raw material less likely to leak out. The second possible implementation method allows the raw material to be discharged and entered at the same time, which improves the transport speed of the raw material. The third implementation method increases the capacity and space for storing raw material at one time, which helps to reduce the number of transport times. The fourth implementation method increases the surface area of ​​the space that will be subjected to increased air pressure when discharging raw material, which helps to reduce the pressure per unit area on the inner surface of the unloading valve when the pressure difference is large.

[0030] The above structural design enables the transport of raw materials from the low-pressure supply side to the high-pressure transfer side without the need for additional pressure. The valve body design is simple and can be assembled from only pipes and the corresponding valve structure 3, resulting in relatively low cost.

[0031] In other embodiments, at least three valve structures 3 are arranged along the axial direction of the pipeline 1, and only one valve structure 3 is open at the same time. This design ensures that at least two valve structures 3 remain closed during the transportation of raw materials, so that the unloading valve can further guarantee the sealing performance when dealing with leakage risks.

[0032] like Figure 1 and Figure 2 As shown, optionally, the pipeline 1 includes a valve mounting pipe 4 and an intermediate pipe 5, wherein the valve mounting pipe 4 and the intermediate pipe 5 are arranged alternately along the axial direction of the pipeline 1, and the valve mounting pipe 4 is sealed to the corresponding intermediate pipe 5.

[0033] In this embodiment, the valve mounting pipe 4 is used to facilitate the valve structure 3, and the intermediate pipe 5 is used to extend the relative distance between the two valve mounting pipes 4, expand the space of the temporary storage channel 2, and at the same time help to reduce the number of valve structures 3, which helps to reduce costs.

[0034] like Figure 2 As shown, optionally, the valve structure 3 includes a power source disposed outside the valve mounting pipe 4 and a corresponding airlock valve 7 installed inside the valve mounting pipe 4. One end of the rotating shaft 16 inside the airlock valve 7 penetrates the wall of the valve mounting pipe 4 and extends to its outer side. The output end of the power source is connected to the extended end of the rotating shaft 16 on the corresponding airlock valve 7.

[0035] In this embodiment, the rotating shaft 16 inside the airlock valve 7 can be driven to rotate in both directions by a power source, which can control the airlock valve 7 to close or open the cross section inside the pipeline 1, making it convenient to electrically control the entire valve.

[0036] like Figure 2 and Figure 3As shown, optionally, the power source includes a housing 8 fixed to the valve mounting pipe 4, a cylinder 9 rotatably connected to the lower part of the housing 8, a crank 10 rotatably connected to the output end of the cylinder 9, and the other end of the crank 10 fixedly connected to the extended end of the rotating shaft 16 on the corresponding airlock valve 7.

[0037] In this embodiment, by controlling the extension and retraction of the output end of the cylinder 9, it can drive the crank 10 to rotate. When the crank 10 rotates, it will drive the shaft 16 to rotate, thereby controlling the opening and closing of the airlock valve 7 on one side of the temporary storage channel 2. This solution is simple to operate and easy to use. In other embodiments, the power source may also consist of a reducer fixed on the valve mounting pipe 4 and a motor fixed on the reducer. The output end of the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the protruding end of the corresponding rotating shaft 16. The motor output end is driven to rotate, causing the rotating shaft 16 to rotate at a reduced speed. This can also realize the opening and closing of the airlock valve 7 on the temporary storage channel 2 side.

[0038] like Figure 4 and Figure 6 As shown, optionally, a through hole is provided at a corresponding position on the valve mounting pipe 4, and the rotating shaft 16 of the corresponding airlock valve 7 passes through the through hole. A sleeve 11 is provided in the through hole, a sealing box 12 is provided in the sleeve 11, and a pressure cap 13 is provided in the sealing box 12. The sleeve 11 and the sealing box 12 are fixed to the wall of the corresponding valve mounting pipe 4 by fasteners, and the pressure cap 13 is fixed to the sealing box 12 by fasteners. The sealing box 12 and the pressure cap 13 are both sealed to the rotating shaft 16 of the corresponding airlock valve 7.

[0039] In this embodiment, the gap between the sleeve 11 and the valve mounting pipe 4 is sealed by the sleeve 11, the gap between the sealing box 12 and the rotating shaft 16 is sealed by the sealing box 12, and the sleeve 11 and the sealing box 12 are locked and sealed by the pressure cap 13. This can prevent leakage at the part where the rotating shaft 16 is connected to the valve mounting pipe 4, so as to prevent the material and the high temperature gas of the accompanying material from leaking out and causing a safety accident.

[0040] like Figure 2 As shown, optionally, the inner cross-section of the valve mounting pipe 4 along its length is a square surface.

[0041] In this embodiment, the square face facilitates molding and the connection and assembly of valve structure 3 and related structures.

[0042] like Figure 1 As shown, optionally, square-to-round pipes 14 are sealed and connected to the valve mounting pipes 4 at both ends of the pipeline 1.

[0043] In this embodiment, the square-to-round pipe 14 facilitates the connection and installation of the unloading valve as a whole with an external pipe.

[0044] like Figure 2-6 As shown, optionally, the airlock valve 7 includes a valve plate 15 fixed on the rotating shaft 16. The valve plate 15 is located inside the pipeline 1 and is used to seal one end of the corresponding temporary storage channel 2. A counterweight 6 is fixed to the end of the rotating shaft 16 away from the power source.

[0045] In this embodiment, the counterweight 6 is used to ensure the sealing effect when the rotating shaft 16 drives the valve plate 15 to seal the temporary storage channel 2. By increasing the tendency of the rotating shaft 16 to rotate to one side by the counterweight 6, when the rotating shaft 16 drives the valve plate 15 to seal the temporary storage channel 2, it can prevent the valve plate 15 from being forced open by air pressure and rotating in the opposite direction, thereby improving the reliability of the structure.

[0046] Optionally, the inner valve plate 15 and the rotating shaft 16 of the airlock valve 7 are both made of heat-resistant steel.

[0047] In one possible implementation, the heat-resistant steel can be 304 stainless steel.

[0048] In this embodiment, by limiting the material of the valve plate 15 and the rotating shaft 16, their corresponding high temperature resistance can be improved, which is beneficial for the unloading valve to transport high temperature raw materials. At the same time, in order to further improve the high temperature resistance of the unloading valve, the main body lining of the pipeline 1 can also be designed to have a thickness of 100mm, including 45mm of heat insulation material and 55mm of castable refractory.

[0049] A control method for a high-temperature powder reverse pressure airlock discharge valve includes the following steps: S1: Control at least one valve structure 3 to be in the open state, and at the same time control at least one valve structure 3 to be in the closed state.

[0050] By designing the control method described above, the unloading valve can achieve reverse pressure transportation of raw materials by regularly controlling the opening and closing of different valves when facing reverse pressure material transportation, which simplifies the control difficulty and reduces the design cost.

[0051] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A high-temperature powder reverse pressure airlock discharge valve, characterized in that, It includes a pipeline (1) arranged at a set angle to the ground, wherein the upper end of the pipeline (1) is the raw material inlet end, and a valve group is provided in the pipeline (1). The valve group includes multiple valve structures (3) arranged sequentially along the axial direction of the pipeline (1), and a temporary storage channel (2) is formed between two adjacent valve structures (3). The valve assembly has a first operating condition and a second operating condition; When the valve group is in the first working condition, all valve structures (3) are in the closed state; When the valve assembly is in the second operating condition, at least one valve structure (3) is in the open state and at least one valve structure (3) is in the closed state.

2. The high-temperature powder reverse pressure airlock discharge valve according to claim 1, characterized in that, The pipeline (1) includes a valve installation pipe (4) and an intermediate pipe (5), wherein the valve installation pipe (4) and the intermediate pipe (5) are arranged alternately along the axial direction of the pipeline (1), and the valve installation pipe (4) is sealed to the corresponding intermediate pipe (5).

3. The high-temperature powder reverse pressure airlock discharge valve according to claim 2, characterized in that, The valve structure (3) includes a power source located outside the valve mounting pipe (4) and a corresponding airlock valve (7) installed inside the valve mounting pipe (4). One end of the rotating shaft (16) inside the airlock valve (7) penetrates the wall of the valve mounting pipe (4) and extends to its outer side. The output end of the power source is connected to the extended end of the rotating shaft (16) on the corresponding airlock valve (7).

4. The high-temperature powder reverse pressure airlock discharge valve according to claim 3, characterized in that, The power source includes a housing (8) fixed on the valve mounting pipe (4), a cylinder (9) is rotatably connected to the housing (8), a crank (10) is rotatably connected to the output end of the cylinder (9), and the other end of the crank (10) is fixedly connected to the extended end of the rotating shaft (16) on the corresponding airlock valve (7).

5. A high-temperature powder reverse pressure airlock discharge valve according to claim 3 or 4, characterized in that, A through hole is provided at a corresponding position on the valve mounting pipe (4). The rotating shaft (16) of the corresponding airlock valve (7) passes through the through hole. A sleeve (11) is provided in the through hole. A sealing box (12) is provided in the sleeve (11). A pressure cap (13) is provided in the sealing box (12). The sleeve (11) and the sealing box (12) are fixed to the wall of the corresponding valve mounting pipe (4) by fasteners. The pressure cap (13) is fixed to the sealing box (12) by fasteners. The sealing box (12) and the pressure cap (13) are both sealed to the rotating shaft (16) of the corresponding airlock valve (7).

6. A high-temperature powder reverse pressure airlock discharge valve according to claim 5, characterized in that, The valve mounting pipe (4) has a square cross-section along its length.

7. A high-temperature powder reverse pressure airlock discharge valve according to claim 2, characterized in that, A square-to-round pipe (14) is sealed to the valve mounting pipe (4) located at both ends of the pipeline (1).

8. A high-temperature powder reverse pressure airlock discharge valve according to claim 3, characterized in that, The airlock valve (7) includes a valve plate (15) fixed on a rotating shaft (16), the valve plate (15) being located inside the pipeline (1) and used to seal one end of the corresponding temporary storage channel (2), and a counterweight (6) being fixed at the end of the rotating shaft (16) away from the power source.

9. A high-temperature powder reverse pressure airlock discharge valve according to claim 8, characterized in that, The inner valve plate (15) and rotating shaft (16) of the airlock valve (7) are both made of heat-resistant steel.

10. A control method for a high-temperature powder reverse pressure airlock unloading valve, comprising a high-temperature powder reverse pressure airlock unloading valve as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Control at least one valve structure (3) to be in the open state, and at the same time control at least one valve structure (3) to be in the closed state.

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