Dry coke quenching rotary seal valve and its air extraction system

Abstract

The present invention discloses a dry quenching rotary seal valve for conveying coke in a dry quenching system, and the dry quenching system further includes an inert gas. The rotary seal valve includes: a valve seat formed with a receiving cavity, and the valve seat is provided with a feed inlet and a discharge outlet; a valve body rotatably connected in the receiving cavity; an air outlet mechanism including a sealing elbow plate and a conduit. The sealing elbow plate is located at the feed inlet and connected to the inner wall of the valve seat. A feed channel for the coke to enter the receiving cavity is formed between the side of the sealing elbow plate away from the inner wall of the valve seat and the feed inlet. One end of the conduit passes through the sealing elbow pipe and communicates with the receiving cavity, and the other end extends out of the feed inlet and is externally connected to a negative pressure mechanism. The rotary seal valve proposed by the technical solution of the present invention can discharge the internal air, avoiding the influence caused by the air entering the dry quenching furnace and affecting the stable operation of the dry quenching furnace.

Description

Technical Field

[0001] The invention relates to the technical field of dry quenching equipment for coal coking, and in particular to a dry quenching rotary sealing valve and an air derivation system thereof. Background Art

[0002] In the process of coal coking, the dry quenching process is generally used to reduce the coke temperature in the coke oven production process and recover the sensible heat of coke for power generation. In the dry quenching process, a coke drum is used to lift the red coke to the top of the dry quenching furnace and load it into the dry quenching furnace through a loading device. The circulating gas composed of inert gas runs from bottom to top in the dry quenching furnace, absorbs the heat of the coke, is drawn out from the middle and upper part of the dry quenching furnace, enters the boiler to generate steam after primary dust removal, and the steam is sent to the power plant for power generation. The circulating gas is cooled by the boiler, and then enters the dry quenching furnace after being pressurized by the fan for recycling. The coke in the dry quenching furnace runs from top to bottom, and after being cooled by the circulating gas, it is discharged through the vibrator and rotary seal valve at the bottom of the dry quenching furnace, falls into the conveyor belt, and is sent to the coke bin or ironmaking blast furnace.

[0003] At present, in the dry quenching process, the main function of using a rotary sealing valve in the coke discharge process is to discharge the coke evenly and prevent the discharge of the circulating gas in the dry quenching process. The rotation of the rotary sealing valve is directional. The coke enters the grid of the rotary sealing valve from the feed port, along the side of the rotary sealing valve that rotates downward, and falls onto the conveyor belt at the discharge port. Air will enter the grid, along the side that rotates upward to the feed port, and the coke enters the grid to occupy space. Since the grid plate and the valve body are tightly sealed, the air cannot flow back and can only move upward. Coke is a block material with strong air permeability and high temperature. The heated air enters the dry quenching furnace and reacts chemically with the high-temperature coke to generate carbon monoxide, which can easily cause coke burning and increase combustible gas. Summary of the invention

[0004] The main purpose of the present invention is to provide a dry coke quenching rotary sealing valve, aiming to solve the technical problem that in the current dry coke quenching process, the gas of the rotary sealing valve cannot be discharged in time, which easily causes the increase of combustible gas.

[0005] To achieve the above object, the present invention proposes a dry coke quenching rotary sealing valve, which is used for conveying coke in a dry coke quenching system, and the dry coke quenching system also includes an inert gas. The rotary sealing valve includes:

[0006] A valve seat is formed with a containing cavity, and the valve seat is provided with a feed inlet and a discharge outlet;

[0007] A valve body, rotatably connected to the accommodating cavity;

[0008] The air outlet mechanism includes a sealing bent plate and a conduit. The sealing bent plate is located at the feed inlet and is connected to the inner wall of the valve seat. A feed channel for the coke to enter the accommodation chamber is formed between the side of the sealing bent plate away from the inner wall of the valve seat and the feed inlet. One end of the conduit passes through the sealing bent plate and communicates with the accommodation chamber, and the other end extends out of the feed inlet and is externally connected to a negative pressure mechanism.

[0009] Optionally, a plurality of grid plates are arranged circumferentially on the valve body. A grid groove for accommodating the coke is formed between two adjacent grid plates, and the end of the grid plate away from the valve body also contacts the inner wall of the valve seat.

[0010] Optionally, at least one air inlet is provided on the sealing bent plate. The air inlet is opened on the side of the sealing bent plate close to the feed channel. The negative pressure mechanism extracts the air in the grid groove and creates a negative pressure in the grid groove. When the valve body rotates to make the grid groove communicate with the air inlet, the inert gas enters the grid groove for gas exchange.

[0011] Optionally, the sealing bent plate is arranged in an arc structure and is concentric with the inner wall of the valve seat.

[0012] Optionally, the conduit includes a bent pipe and a reduced-diameter pipe that are connected to each other. The bent pipe is connected to the sealing bent plate. The reduced-diameter pipe has a first end and a second end. The first end is connected to the bent pipe, and the second end is externally connected to the negative pressure mechanism, and the diameter of the first end is smaller than that of the second end.

[0013] Optionally, reinforcing ribs are provided on the sealing bent plate, and the reinforcing ribs are also connected to the valve seat.

[0014] Optionally, a steel mesh is also connected to the air inlet, and the steel mesh is provided with uniformly distributed mesh holes.

[0015] The present invention also proposes a dry coke quenching rotary seal valve air outlet system, including the dry coke quenching rotary seal valve as described in any one of the above. The conduit of the dry coke quenching rotary seal valve is connected to an air pipe, and the air pipe is connected to a negative pressure mechanism.

[0016] Optionally, an electromagnetic valve is further provided on the air pipe, and a regulating valve is also provided between the electromagnetic valve and the negative pressure mechanism.

[0017] Optionally, the air pipe and the conduit are connected through a flange.

[0018] The technical solution of the present invention is to connect an air outlet mechanism to the valve seat to extract the air entering the valve seat, preventing the air from entering the coke dry quenching furnace and reacting chemically with the coke at high temperatures, which would cause an impact. The sealing bend plate is connected to the inner wall of the valve seat and is located at the feed port of the valve seat. The conduit is connected to the accommodating cavity of the valve seat to extract the air in the accommodating cavity, preventing the air from reacting with the high-temperature coke. The structure of the present invention is simple and easy to implement, which can reduce the labor intensity of workers on duty and save manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a schematic structural diagram of an embodiment of the coke dry quenching rotary seal valve of the present invention;

[0021] Figure 2 It is a schematic structural diagram of an embodiment of the air outlet system of the coke dry quenching rotary seal valve of the present invention.

[0022] Explanation of the reference numerals in the drawings:

[0023] Label Name Label Name 1 Valve seat 31 Air inlet 11 Feed inlet 4 Conduit 12 Discharge outlet 41 Elbow pipe 13 Feed channel 42 Reducer pipe 2 Valve body 5 Air pipe 21 Grid plate 6 Solenoid valve 22 Grid groove 7 Regulating valve 3 Sealing bent plate 8 Negative pressure mechanism

[0024] The realization, functional features, and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] The invention provides a coke dry quenching rotary sealing valve.

[0030] In the prior art, in the current dry quenching process, the main function of using a rotary sealing valve in the coke discharge process is to uniformly discharge the coke and prevent the discharge of the circulating gas in the dry quenching. The rotation of the rotary sealing valve is directional. The coke enters the grid groove of the rotary sealing valve from the feed port, along the side of the rotary sealing valve rotating downward, to the discharge port and falls onto the conveyor belt. Air will enter the grid groove, along the side rotating upward to the feed port, and the coke enters the grid groove to occupy space. Since the grid plate and the valve body are tightly sealed, the air cannot flow back and can only move upward. Coke is a block material with strong air permeability and high temperature. The heated air enters the dry quenching furnace and reacts chemically with the high-temperature coke to generate carbon monoxide, which can easily cause coke burning and increase combustible gas. The inert gas in the dry quenching system includes nitrogen, or a mixture of nitrogen and carbon dioxide, or a mixture of other inert gases.

[0031] To solve the above technical problems, the technical solution of the present invention is to connect an air outlet mechanism to the valve seat to discharge the air entering the valve seat, preventing the air from entering the coke dry quenching furnace and reacting with the coke at high temperatures, which would cause an impact. The sealing bent plate is connected to the inner wall of the valve seat and is located at the feed port of the valve seat. The conduit is communicated with the accommodation cavity of the valve seat to extract the air in the accommodation cavity, preventing the air from reacting with the high-temperature coke. The structure of the present invention is simple and easy to implement, which can reduce the labor intensity of workers on duty and save manpower.

[0032] The above technical solution will be described in detail below with reference to the accompanying drawings.

[0033] In the embodiment of the present invention, as Figure 1 shown, the coke dry quenching rotary seal valve is used to convey coke in the coke dry quenching system, and the coke dry quenching system further includes inert gas. The rotary seal valve includes:

[0034] A valve seat 1, which forms an accommodation cavity, and the valve seat 1 is provided with a feed port 11 and a discharge port 12 that communicate with the accommodation cavity;

[0035] A valve body 2, which is rotatably connected in the accommodation cavity;

[0036] An air outlet mechanism, which includes a sealing bent plate 3 and a conduit 4. The sealing bent plate 3 is located at the feed port 11 and is connected to the inner wall of the valve seat 1. A feed channel 13 for coke to enter the accommodation cavity is formed between one side of the sealing bent plate 3 away from the inner wall of the valve seat 1 and the feed port 11. One end of the conduit 4 passes through the sealing bent plate 41 and communicates with the accommodation cavity, and the other end extends out of the feed port 11 and is externally connected to a negative pressure mechanism.

[0037] In the specific implementation process, the feed port 11 is opened at the top of the valve seat 1. The shapes of the feed port 11 and the discharge port 12 are square, circular or other shapes, which are not limited in this embodiment. The feed port 11 is used for coke to enter the accommodation cavity. The valve body 2 rotates in the accommodation cavity of the valve seat 1 to convey the coke from the feed port 11 to the discharge port 12. The discharge port 12 is used for the coke to be discharged from the valve seat 1. In practice, in order to facilitate the connection of the feed port 11 to external equipment, the feed port 11 is also provided with a side wall extending out of the valve seat 1, and the conduit 4 passes through the side wall of the feed port 11. In order to buffer the impact of the coke falling into the valve seat 1, the side wall of the feed port 11 extends obliquely out of the valve seat. In this way, when the coke falls into the inside of the valve seat 1, the forward impact is reduced and it conforms to the rotation direction of the valve body 2. In addition, the side wall of the feed port 11 is also connected with a flange ring to facilitate the connection with external equipment. The conduit 4 passes out through the side wall of the feed port 11 to avoid affecting the connection between the feed port 11 and other equipment.

[0038] In this embodiment, the valve seat 1 includes a housing forming an accommodation cavity and a support for the housing. Specifically, the housing is in a cylindrical structure or a spherical structure, which is not limited in this embodiment. Taking the cylindrical structure as an example in this embodiment, both ends of the valve body 2 extend out of the two ends in the length direction of the housing of the valve seat and are rotatably connected to the housing, and are also rotatably supported by the support to ensure the smooth rotation of the valve body 2. To enable the coke to be cooled in the entire accommodation cavity of the valve seat, the lengths of the feed inlet and the discharge outlet opened in the length direction of the valve seat housing are close to the length of the valve seat housing to ensure the smooth entry and discharge of the coke.

[0039] The side of the sealing bent plate 3 is connected to the inner wall of the base and is located at the feed inlet 11. A feed channel 13 is formed between one side of the sealing bent plate 3 and the side wall of the feed inlet 11 to ensure the smooth passage of the coke through the feed inlet 11 into the interior of the valve seat 1. Specifically, in this embodiment, the length direction of the feed inlet 11 is the same as the length direction of the valve seat 1. The side of the sealing bent plate 3 is connected to one width side of the feed inlet 11 and a part of the two length sides. Of course, the sealing bent plate 3 is connected to the position where the bottom of the feed inlet 11 is connected to the inner wall of the valve seat 1, and the curvature of the sealing bent plate 3 is the same as that of the inner wall of the valve seat 1. In this way, a feed channel 13 is formed between the sealing bent plate 3 and the other width side of the feed inlet 11 for the coke to pass through. Through holes are opened on the surface of the sealing bent plate 3 away from the feed channel 13. The conduit 4 is connected to the through hole and communicates with the accommodation cavity inside the valve seat 1. The conduit 4 is also connected to a negative pressure mechanism, and the negative pressure mechanism extracts the air inside the valve seat 1 through the conduit 4.

[0040] Further, a plurality of grid plates 21 are arranged circumferentially on the valve body 2. A grid groove 22 for accommodating coke is formed between two adjacent grid plates 21. The end of the grid plate 21 away from the valve body 2 also contacts the inner wall of the valve seat 1. The sealing bent plate 3 is arranged in an arc structure and is concentric with the inner wall of the valve seat 1.

[0041] In this embodiment, the sealing bent plate 3 is arranged in an arc structure. The arc structure has the same diameter as the inner wall of the valve seat 1 and is concentric with the valve seat 1. In this way, the sealing bent plate 3 can be used as an extension of the inner wall of the valve seat 1 towards the feed inlet 11. The arc length of the sealing bent plate 3 is 60%-120% of the arc length of the grid groove 22 of the valve body 2. Preferably, the two arc lengths are the same. The arc length of the grid groove 22 is the arc length passed by the end away from the valve body 2 between two adjacent grid plates 21 on the valve body 2 as the valve body 2 rotates. Specifically, to improve the connection strength of the sealing bent plate 3, the sealing bent plate 3 and the valve seat 1 can be of an integral structure. The contact gap between the grid plate 21 and the inner wall of the base is the same as the contact gap between the grid plate 21 and the sealing bent plate 3. As Figure 1 shown, the valve body 2 rotates counterclockwise, driving the grid plate 21 to rotate. When the grid plate 21 rotates to contact the sealing bent plate 3 and passes through the through hole of the sealing bent plate 41, the negative pressure mechanism extracts the air in the grid groove 22, causing a negative pressure state to be formed in the grid groove 22.

[0042] In the actual dry quenching furnace system, inert gas is used as cooling gas to absorb the heat of coke. In this way, inert gas will coexist during the transportation of coke. In this embodiment, at least one air inlet 31 is provided on the sealing bent plate 3, and the air inlet 31 is provided on the side of the sealing bent plate 3 close to the feed channel 13. The negative pressure mechanism extracts air from the cell groove 22 and forms a negative pressure in the cell groove 22. When the valve body 2 rotates until the cell groove 22 is connected to the air inlet 31, the inert gas enters the cell groove 22 for gas exchange.

[0043] In this embodiment, the air inlet 31 is used for the inert gas in the coke circulation system to enter the enclosed space. Specifically, when the grid plate 21 continues to rotate to the air inlet 31 of the sealing bent plate 3, the grid groove 22 is in a negative pressure state, so that the inert gas enters the grid groove 22, thereby completing the gas exchange in the grid groove 22. In practice, the number and size of the air inlet 31 are determined according to the capacity of the rotary sealing valve and the actual situation. Preferably, the air inlet 31 is a long strip hole, and the air inlet 31 is opened on both sides of the sealing bent plate 3.

[0044] Optionally, the air inlet 31 is also connected to a steel mesh, and the steel mesh is provided with uniform mesh holes. The sealing bent plate 3 is provided with reinforcing ribs, and the reinforcing ribs are also connected to the valve seat 1 .

[0045] There is a sealing bend plate 3 located at the feed port 11. When the coke passes through the feed port 11 and enters the grid 22, it will pass through the sealing bend plate 3. In this way, there may be a situation where a small volume of coke blocks the air inlet 31. A steel mesh is provided at the air inlet 31 to prevent the coke from blocking the air inlet 31. Specifically, the steel mesh may protrude from the air inlet 31 to prevent the coke from staying at the steel mesh. In this embodiment, the reinforcing rib is located on the side of the sealing bend plate 3 that is away from the accommodating cavity of the valve seat 1. In order to increase the strength of the sealing bend plate 3, the reinforcing rib is also connected to the valve seat 1. Specifically, a plurality of reinforcing ribs may be provided. In addition, the steel mesh may be connected between two reinforcing ribs.

[0046] Optionally, the conduit 4 includes a bend 41 and a reducing pipe 42 that are interconnected, the bend 41 is connected to the sealing bend plate 3, the reducing pipe 42 is provided with a first end and a second end, the first end is connected to the bend 41, the second end is externally connected to a negative pressure mechanism, and the diameter of the first end is smaller than the diameter of the second end to reduce the resistance to gas circulation.

[0047] like Figure 1 As shown, the elbow 41 is connected to the sealing elbow 3, and the reducing pipe 42 passes through the side wall of the feed port 11 and is connected to the external negative pressure device. In addition, in another embodiment, when the negative pressure mechanism has sufficient capacity, the negative pressure mechanism can be directly connected to the elbow 41.

[0048] The sealing bent plate 41 and the variable diameter pipe 42 in this embodiment are made of any material, but ordinary carbon steel is preferred.

[0049] When the coke dry quenching rotary seal valve proposed in this embodiment performs the coke discharging operation, first, the negative pressure mechanism is maintained in a negative pressure state, the pressure in the conduit 4 decreases, the grid plate 21 of the rotary seal valve rotates past the conduit 4, and the air in the grid groove S1 flows into the conduit 4, forming a negative pressure inside the grid groove S1. As the rotary seal valve rotates, the front grid plate of the grid groove S1 continues to pass through the air inlet of the sealing elbow plate, and the inert gas in the system enters the grid groove from the air inlet. The air in the grid groove continues to flow into the conduit, and the external inert gas displaces the air in the grid groove. At this time, in addition to the inert gas entering the air inlet, there is also a part of the gas discharged from the previous grid groove S0 after the coke falls and occupies the grid groove space, and the side with the grid plate flows into the other side through the air inlet and enters the grid groove.

[0050] As the rotary seal valve rotates, after the front grid plate of the grid groove S1 passes through the sealing elbow plate, the replacement of the inert gas and air is completed, and the coke falls into the grid groove S1. At this time, the rear grid plate of the grid groove S1 is just at the conduit, and the gas discharged from the grid groove can still enter the conduit.

[0051] As the rotary seal valve rotates, after the rear grid plate of the grid groove S1 passes through the conduit 4, the gas flow in the grid groove S1 into the conduit stops. The coke continues to fall into the grid groove S1, and a part of the gas in the grid groove S1 can enter the next grid groove S2 from the air inlet, and the excess gas in the grid groove S1 rises into the coke dry quenching furnace system to complete the discharge of the gas in the grid groove S1.

[0052] As the rotary seal valve rotates, after the rear grid plate of the grid groove S1 passes through the air inlet of the sealing elbow plate, the coke continues to fall into the grid groove S1, and the gas discharged from the grid groove S1 rises and enters the coke dry quenching furnace system. The gas entering the conduit 4 enters the negative pressure mechanism to complete the export of the air.

[0053] As the rotary seal valve rotates, the coke in the grid groove is conveyed to the discharge port for discharge, and the air fills the grid groove space and reciprocates with the rotation of the rotary seal valve.

[0054] Thus, the rotary seal valve proposed in this embodiment can replace the air in the grid groove of the rotary seal valve with the inert gas inside the coke dry quenching furnace and discharge it smoothly, avoiding the influence of the air in the grid groove entering the coke dry quenching furnace and affecting the stable operation of the coke dry quenching furnace.

[0055] The present invention also proposes an air export system for a coke dry quenching rotary seal valve. The air export system includes the coke dry quenching rotary seal valve described in the above embodiment. The specific structure of the coke dry quenching rotary seal valve refers to the above embodiment. Since this air export system adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one. As Figure 2 shown, wherein, the conduit of the coke dry quenching rotary seal valve is connected to an air pipeline 5, and the air pipeline 5 is connected to the negative pressure mechanism.

[0056] The negative pressure mechanism 8 in this embodiment can be a draft fan, a dust collector, or the negative pressure pipeline of a dust removal system, etc.

[0057] Furthermore, a solenoid valve 6 is also provided on the air pipeline 5. A regulating valve 7 is also provided between the solenoid valve 6 and the negative pressure mechanism 8. The air pipeline 5 and the conduit 4 are connected through a flange.

[0058] In this embodiment, the solenoid valve 6, the negative pressure mechanism 8, the regulating valve 7, and the rotary seal valve are respectively connected to the control system, and the entire system is controlled by the controller of the control system. Among them, the regulating valve 7 is used to regulate the gas flow rate in the pipeline, and a carbon steel butterfly valve is preferred.

[0059] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A dry quenching coke rotary seal valve is used for transporting coke in a dry quenching coke system, and an inert gas is also included in the dry quenching coke system. It is characterized in that, The rotary seal valve includes: A valve seat, which is formed with a receiving cavity, and the valve seat is provided with a feed inlet and a discharge outlet; A valve body, which is rotatably connected in the receiving cavity; An air outlet mechanism, including a sealing bent plate and a conduit. The sealing bent plate is located at the feed inlet and is connected to the inner wall of the valve seat. A feed channel for the coke to enter the receiving cavity is formed between the side of the sealing bent plate away from the inner wall of the valve seat and the feed inlet. One end of the conduit passes through the sealing bent plate and communicates with the receiving cavity, and the other end extends out of the feed inlet and is externally connected to a negative pressure mechanism; A plurality of grid plates are circumferentially arranged on the valve body, and a grid groove for accommodating the coke is formed between two adjacent grid plates. The end of the grid plate away from the valve body also contacts the inner wall of the valve seat; At least one air inlet is provided on the sealing bent plate. The air inlet is provided on the side of the sealing bent plate close to the feed channel. The negative pressure mechanism extracts the air in the grid groove and forms a negative pressure in the grid groove. When the valve body rotates to make the grid groove communicate with the air inlet, the inert gas enters the grid groove for gas exchange; The conduit includes a bent pipe and a reduced-diameter pipe that are connected to each other. The bent pipe is connected to the sealing bent plate. The reduced-diameter pipe has a first end and a second end. The first end is connected to the bent pipe, and the second end is externally connected to a negative pressure mechanism, and the diameter of the first end is smaller than the diameter of the second end.

2. The dry quenching coke rotary seal valve according to claim 1, characterized in that, The sealing bent plate is arranged in an arc structure and is concentric with the inner wall of the valve seat.

3. The dry quenching coke rotary seal valve according to claim 1, characterized in that, Reinforcing ribs are provided on the sealing bent plate, and the reinforcing ribs are also connected to the valve seat.

4. The dry quenching coke rotary seal valve according to claim 3, characterized in that, A steel mesh is also connected to the air inlet, and the steel mesh is provided with uniform mesh holes.

5. A dry quenching coke rotary seal valve air outlet system, characterized in that, It includes the dry coke quenching rotary seal valve according to any one of claims 1-4. The conduit of the dry coke quenching rotary seal valve is connected to an air pipe, and the air pipe is connected to a negative pressure mechanism.

6. The dry quenching coke rotary seal valve air outlet system according to claim 5, characterized in that, An electromagnetic valve is also provided on the air pipe, and a regulating valve is also provided between the electromagnetic valve and the negative pressure mechanism.

7. The dry quenching coke rotary seal valve air outlet system according to claim 5, characterized in that, The air pipe and the conduit are connected through a flange.

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