Sealing device, discharge apparatus and ironmaking system

Abstract

The utility model provides a kind of sealing device, discharging equipment and ironmaking system.Sealing device includes: sealing valve, sealing valve includes valve body and valve core, valve core is located inside valve body, and can be moved between first position and second position relative to valve body;At least two sealing members, at least two sealing members are respectively located in valve body, and are respectively located between the outer wall of valve body and valve core, at least two sealing members are arranged along first direction;Wherein, in the case where valve core is located in first position, sealing valve is in closed state, at least two sealing members are respectively in contact with the outer wall of valve core;In the case where valve core is located in second position, sealing valve is in open state, at least two sealing members are respectively separated from the outer wall of valve core.By setting at least two sealing members, the gap between valve body and valve core is effectively sealed when discharging equipment stops discharging, the sealing isolation between high pressure area and low pressure area can be realized, and the reliability of sealing is ensured.

Description

Technical Field

[0001] This utility model relates to the field of ironmaking equipment technology, and in particular to a sealing device, a discharge device, and an ironmaking system. Background Technology

[0002] Currently, in the metallurgical industry, with the development of vertical shaft furnaces for hydrogen smelting, the discharged furnace charge is typically pellets with an iron content of over 90%. Specifically, during the vertical shaft furnace smelting process, the reaction between hydrogen and ore pellets is accelerated under high temperature and high pressure conditions. The metallized pellets after the reaction need to be discharged from the high-pressure equipment through processes such as pressure equalization and depressurization in intermediate tanks before being discharged into the atmospheric pressure equipment.

[0003] In related technologies, in order to ensure that the blast furnace does not leak air, a valve for sealing is usually installed at the top of the intermediate tank. However, the sealing ability of this valve is poor and it cannot effectively play a sealing role during the discharge of metallized pellets, which affects the reliability of discharge. Utility Model Content

[0004] This utility model provides a sealing device, a discharge equipment, and an ironmaking system to solve the problem of poor sealing performance of discharge equipment in the prior art during discharge.

[0005] This utility model provides a sealing device, comprising: A sealing valve, comprising a valve body and a valve core, wherein the valve core is disposed inside the valve body and is movable relative to the valve body between a first position and a second position; At least two seals are provided on the valve body and located between the outer walls of the valve body and the valve core, and the at least two seals are arranged along a first direction; When the valve core is in the first position, the sealing valve is in the closed state, and at least two of the sealing elements abut against the outer wall of the valve core; when the valve core is in the second position, the sealing valve is in the open state, and at least two of the sealing elements are separated from the outer wall of the valve core.

[0006] According to the sealing device provided by this utility model, the valve body is provided with at least two air passages, the openings of the at least two air passages respectively facing at least two sealing elements, and the sealing device further includes: At least two air supply lines are provided, each of which is connected to the valve body and is connected to at least two air passages. When the valve core is in the first position, at least two of the air supply lines are connected; when the valve core is in the second position, at least two of the air supply lines are cut off, and at least two of the air supply lines are connected to the outside.

[0007] According to the sealing device provided by this utility model, the sealing device further includes: A flow detection device is provided in at least one of the gas supply lines.

[0008] According to the sealing device provided by this utility model, the sealing device further includes: The controller is electrically connected to the flow detection element; A control valve is provided on at least one of the gas supply lines and is electrically connected to the controller.

[0009] According to the sealing device provided by this utility model, the sealing device further includes: A switching valve is provided in at least one of the gas supply lines, the switching valve including a first working position and a second working position; A drive assembly, connected to the valve core, is used to drive the valve core to move relative to the valve body; A trigger element is provided in the drive component; When the valve core is in the first position, the trigger is in contact with the switching valve, and the switching valve is in the first working position to open at least one of the gas supply lines; when the valve core is in the second position, the trigger is separated from the switching valve, and the switching valve is in the second working position to close at least one of the gas supply lines.

[0010] According to the sealing device provided by this utility model, the driving assembly includes: Hydraulic drive components; A crank is connected to the hydraulic drive component, and a trigger is disposed on the crank; The rotating shaft is connected to the valve core, and the crank is connected to the rotating shaft.

[0011] According to a sealing device provided by this utility model, at least one of the gas supply lines includes: Pipeline body; An exhaust valve is connected to either the pipeline body or the valve body, and is in communication with at least one of the gas passages. When the valve core is in the first position, the pipeline body is open, the exhaust valve is closed, and it is disconnected from the outside; when the valve core is in the second position, the pipeline body is closed, the exhaust valve is open, and it is connected to the outside.

[0012] According to the sealing device provided by this utility model, at least one of the sealing elements has a recess on the side opposite to the valve core, and the valve body includes: The valve body has a valve core movably disposed inside the valve body, and at least two sealing elements are respectively disposed on the valve body; A first support member is disposed on the valve body, one end of the first support member is located in the recess, and at least one part of the air passage is disposed on the valve body and the other part is disposed on the first support member; A second support member is disposed on the valve body and located on the side of the first support member close to the valve core, and at least a portion of the seal member is located between the first support member and the second support member.

[0013] According to the sealing device provided by this utility model, the valve body is further provided with a limiting groove on the side facing the valve core, and at least one of the sealing elements includes: A sealing body, wherein at least one opening of the gas passage faces the sealing body; The first leg is connected to the sealing body, and at least a portion of the first leg is located between the first support member and the second support member; The second leg is connected to the sealing body and is located on both sides of the sealing body, respectively, along with the first leg. The second leg, the sealing body, and the first leg together form the recess, and at least a portion of the second leg is located within the limiting groove.

[0014] According to the sealing device provided by this utility model, the valve body is further provided with a valve cavity, a first interface and a second interface. Along the first direction, the first interface and the second interface are respectively located on both sides of the valve cavity and are respectively connected to the valve cavity. The valve core is movably disposed in the valve cavity. The valve core includes a first communication port and a second communication port. When the valve core is in the first position, the outer wall of the valve core is respectively disposed opposite to the first interface and the second interface, so that the sealing valve is in a closed state. When the valve core is in the second position, the first communication port is connected to the first interface, and the second communication port is connected to the second interface, so that the sealing valve is in an open state.

[0015] This utility model also provides a discharge device, including an intermediate tank and any of the above-mentioned sealing devices, wherein the sealing device is disposed at at least one end of the intermediate tank.

[0016] This utility model also provides an ironmaking system, including any of the above-mentioned sealing devices or any of the above-mentioned discharge equipment.

[0017] The sealing device, discharge equipment, and ironmaking system provided by this utility model, by setting at least two sealing elements, effectively seal the gap between the valve body and the valve core when the discharge equipment stops discharging. This achieves sealed isolation between high-pressure and low-pressure areas. Compared with related technologies that use dome valves with a single sealing ring for sealing, this effectively improves the sealing effect of the sealing device, ensuring sealing reliability while switching between discharge and sealing. Moreover, since at least two sealing elements are used, the number of sealing elements is increased. Even if one sealing element is damaged or malfunctions, the sealing device as a whole still has reliable sealing capability, ensuring the discharge process flow. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of the sealing device provided by this utility model.

[0020] Figure 2 yes Figure 1 An enlarged view of the sealing device in the illustrated embodiment at point A.

[0021] Figure 3 This is the second schematic diagram of the sealing device provided by this utility model.

[0022] Figure 4 This is the third schematic diagram of the sealing device provided by this utility model.

[0023] Figure 5 This is a partial schematic block diagram of the sealing device provided by this utility model.

[0024] Figure 6 This is a schematic diagram of the material discharge device provided by this utility model.

[0025] Figure label: 1: Sealing device; 10: Sealing valve; 12: Valve body; 121: Air passage; 122: Opening; 123: Valve body; 124: First support member; 125: Second support member; 126: Limiting groove; 127: Valve cavity; 128: First interface; 129: Second interface; 14: Valve core; 142: First connecting port; 144: Second connecting port; 20: Sealing element; 22: Recess; 24: Sealing body; 26: First... 1. One leg; 28: Second leg; 30: Air supply line; 32: Line body; 34: Exhaust valve; 40: Flow detection element; 50: Controller; 60: Control valve; 70: Switch valve; 80: Drive assembly; 82: Hydraulic drive element; 84: Crank; 86: Shaft; 90: Trigger element; 2: Discharge equipment; 200: Intermediate tank; 210: Discharge valve; 220: Tank body; 300: High-pressure tank; 310: Material stop valve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] The following is combined Figures 1 to 6 The present invention describes the sealing device 1, the discharge device 2, and the ironmaking system.

[0028] Firstly, such as Figure 1 and Figure 3 As shown, this embodiment provides a sealing device 1, including a sealing valve 10 and at least two sealing elements 20. The sealing valve 10 includes a valve body 12 and a valve core 14. The valve core 14 is disposed inside the valve body 12 and is movable relative to the valve body 12 between a first position and a second position. At least two sealing elements 20 are respectively disposed on the valve body 12 and located between the outer walls of the valve body 12 and the valve core 14. The at least two sealing elements 20 are arranged along a first direction. Wherein, when the valve core 14 is in the first position, the sealing valve 10 is in a closed state, and the at least two sealing elements 20 abut against the outer wall of the valve core 14. When the valve core 14 is in the second position, the sealing valve 10 is in an open state, and the at least two sealing elements 20 are separated from the outer wall of the valve core 14.

[0029] The sealing device 1 of this embodiment includes a sealing valve 10 and at least two sealing elements 20, wherein the at least two sealing elements 20 are arranged along a first direction.

[0030] The valve core 14 is movably disposed inside the valve body 12. During the movement of the valve core 14 relative to the valve body 12, the sealing valve 10 can be switched between a closed state and an open state. Specifically, when the valve core 14 is in the first position, the sealing valve 10 is in the closed state, and the discharge device 2 stops discharging material. Since at least two sealing elements 20 abut against the outer wall of the valve core 14, a reliable seal is achieved. When the discharge device 2 needs to discharge material, at least two sealing elements 20 separate from the outer wall of the valve core 14, and the valve core 14 moves to the second position, i.e., the sealing valve 10 is in the open state, at which point material can be discharged. This achieves the switching between discharge and sealing.

[0031] By setting at least two seals 20, the gap between the valve body 12 and the valve core 14 is effectively sealed when the discharge device 2 stops discharging, which can achieve sealed isolation between the high pressure area and the low pressure area. Compared with the use of a dome valve with a single sealing ring for sealing in related technologies, the sealing effect of the sealing device 1 can be effectively improved, and the reliability of the seal can be ensured while switching between discharge and sealing.

[0032] Moreover, since at least two seals 20 are provided for sealing, the number of seals 20 is increased. Even if one of the seals 20 is damaged or malfunctions, the sealing device 1 as a whole still has reliable sealing capability, which can ensure the process flow of material discharge.

[0033] Optionally, at least one seal 20 may be a rubber sealing ring.

[0034] Optionally, when at least two seals 20 are separated from the outer wall of the valve core 14, a gap of 0.8 mm to 1.5 mm is maintained between each seal 20 and the outer wall of the valve core 14 to ensure that the valve core 14 does not contact the valve body 12 during its movement relative to the valve body 12, thus ensuring flexible movement.

[0035] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the valve body 12 is provided with at least two air passages 121. The openings 122 of the at least two air passages 121 face at least two seals 20 respectively. The sealing device 1 also includes at least two air supply lines 30. The at least two air supply lines 30 are respectively connected to the valve body 12 and respectively communicate with the at least two air passages 121. Wherein, when the valve core 14 is in the first position, the at least two air supply lines 30 are respectively open. When the valve core 14 is in the second position, the at least two air supply lines 30 are respectively closed, and the at least two air supply lines 30 are respectively connected to the outside.

[0036] In this embodiment, at least two air supply lines 30 are respectively connected to at least two air passages 121 on the valve body 12, and the openings 122 of the at least two air passages 121 face at least two seals 20. Specifically, when the valve core 14 is in the first position, the sealing valve 10 is closed, and the discharge device 2 stops discharging. Since the at least two air supply lines 30 are respectively connected, that is, at least two seals 20 are respectively inflated, causing the at least two seals 20 to expand and press tightly against the outer wall of the valve core 14, thus achieving a reliable seal.

[0037] When the discharge device 2 needs to discharge material, at least two air supply lines 30 are shut off, i.e., the air supply to at least two seals 20 is stopped. At the same time, since at least two air supply lines 30 are connected to the outside, at least two seals 20 are released, thereby separating at least two seals 20 from the outer wall of the valve core 14. The valve core 14 moves to the second position, opening the sealing valve 10, at which point material can be discharged. This achieves the switching between discharge and sealing.

[0038] Because at least two air supply lines 30 are provided for at least two seals 20 to be inflated and deflated respectively, the inflation and deflation processes of at least two seals 20 do not affect each other. Even if one seal 20 is damaged or malfunctions, the other seals 20 can still work normally, ensuring the reliability of the seal.

[0039] In some embodiments, such as Figure 3 and Figure 4 As shown, the sealing device 1 also includes a flow detection element 40. The flow detection element 40 is provided in at least one air supply line 30.

[0040] By installing a flow detection device 40 on at least one gas supply line 30, the flow rate of gas in the gas supply line 30 can be detected. When the detection result is abnormal, it can be determined that the corresponding seal 20 of the gas line is faulty. At this time, the gas source of the line can be cut off, which is convenient for operators to check and repair.

[0041] Optionally, the flow detection element 40 may include a flow meter.

[0042] In some embodiments, such as Figure 5 As shown, the sealing device 1 also includes a controller 50 and a control valve 60. The controller 50 is electrically connected to the flow detection element 40. The control valve 60 is located in at least one air supply line 30 and is electrically connected to the controller 50.

[0043] In this embodiment, at least one gas supply line 30 is equipped with a control valve 60, and the control valve 60 and the flow detection element 40 are electrically connected to the controller 50. When the detection result of the flow detection element 40 is abnormal, the flow detection element 40 sends an abnormal flow signal to the controller 50 to trigger an alarm. The controller 50 then controls the control valve 60 on the corresponding gas supply line 30 to cut off the gas supply in a timely manner, facilitating inspection and maintenance by operators.

[0044] In some embodiments, such as Figure 3 and Figure 4 As shown, the sealing device 1 further includes a switching valve 70, a drive assembly 80, and a trigger 90. The switching valve 70 is located in at least one air supply line 30 and includes a first working position and a second working position. The drive assembly 80 is connected to the valve core 14 and is used to drive the valve core 14 to move relative to the valve body 12. The trigger 90 is located in the drive assembly 80. When the valve core 14 is in the first position, the trigger 90 contacts the switching valve 70, and the switching valve 70 is in the first working position, thereby opening at least one air supply line 30. When the valve core 14 is in the second position, the trigger 90 separates from the switching valve 70, and the switching valve 70 is in the second working position, thereby closing at least one air supply line 30.

[0045] The drive assembly 80 is connected to the valve core 14, meaning that under the drive of the drive assembly 80, the valve core 14 can move relative to the valve body 12 between a first position and a second position to switch the sealing valve 10 between a closed state and an open state. Since the trigger 90 is mounted on the drive assembly 80, the movement of the drive assembly 80 can drive the trigger 90 to move.

[0046] Specifically, when the drive assembly 80 moves the valve core 14 to the first position, the sealing valve 10 is closed, and the discharge device 2 stops discharging. At this time, since the trigger 90 and the switching valve 70 are in contact, the switching valve 70 is in the first working position, the air supply line 30 is opened, and the sealing element 20 is inflated. The sealing element 20 expands and presses tightly against the outer wall of the valve core 14 to achieve a reliable seal.

[0047] When the discharge device 2 needs to discharge material, the drive assembly 80 drives the valve core 14 to move, the trigger 90 separates from the switch valve 70, the switch valve 70 switches to the second working position, the air supply line 30 is cut off, that is, the air supply to the seal 20 stops. At the same time, since the air supply line 30 is connected to the outside, the seal 20 is released, thereby separating the seal 20 from the outer wall of the valve core 14. The drive assembly 80 drives the valve core 14 to continue moving to the second position, so that the sealing valve 10 is in the open state. At this time, material can be discharged. This realizes the switching between discharge and sealing.

[0048] Alternatively, the switching valve 70 may include a two-position three-way mechanical spool valve.

[0049] Optionally, the trigger 90 includes a screw.

[0050] In some embodiments, such as Figure 3 and Figure 4 As shown, the drive assembly 80 includes a hydraulic drive component 82, a crank 84, and a shaft 86. The crank 84 is connected to the hydraulic drive component 82, and a trigger 90 is disposed on the crank 84. The shaft 86 is connected to the valve core 14, and the crank 84 is connected to the shaft 86.

[0051] In this embodiment, driven by the hydraulic drive unit 82, the crank 84 drives the valve core 14 to rotate relative to the valve body 12 between a first position and a second position via the rotating shaft 86, thereby switching the sealing valve 10 between an open state and a closed state. Simultaneously, since the trigger element 90 is mounted on the crank 84, the movement of the crank 84 can drive the trigger element 90 to move, causing the trigger element 90 to contact or separate from the switching valve 70, thereby opening and closing the air supply line 30.

[0052] Furthermore, due to the use of hydraulic drive component 82, the driving force is more stable compared to the pneumatic drive component used in related technologies, which helps to ensure smooth switching of the sealing valve 10 between the open and closed states.

[0053] In some embodiments, such as Figure 2 , Figure 3 and Figure 4 As shown, at least one air supply line 30 includes a line body 32 and an exhaust valve 34. The exhaust valve 34 is connected to either the line body 32 or the valve body 12, and communicates with at least one air passage 121. Specifically, when the valve core 14 is in the first position, the line body 32 is open, the exhaust valve 34 is closed, and it is disconnected from the outside. When the valve core 14 is in the second position, the line body 32 is closed, the exhaust valve 34 is open, and it is connected to the outside.

[0054] Specifically, when the valve core 14 is in the first position, the sealing valve 10 is closed, and the discharge device 2 stops discharging. Since the pipeline body 32 is open and the exhaust valve 34 is closed, the sealing element 20 can be inflated, causing the sealing element 20 to expand and press tightly against the outer wall of the valve core 14, thus achieving a reliable seal.

[0055] When the discharge device 2 needs to discharge material, the pipeline body 32 is cut off, that is, the air supply to the seal 20 is stopped. And because the exhaust valve 34 is opened, the air passage 121 is connected to the outside through the exhaust valve 34, that is, the seal 20 is released, thereby separating the seal 20 from the outer wall of the valve core 14. The valve core 14 moves to the second position, so that the sealing valve 10 is in the open state. At this time, material can be discharged.

[0056] In some embodiments, such as Figure 2 As shown, at least one seal 20 has a recess 22 on the side opposite to the valve core 14. The valve body 12 includes a valve body 123, a first support 124, and a second support 125. The valve core 14 is movably disposed inside the valve body 123, and at least two seals 20 are respectively disposed in the valve body 123. The first support 124 is disposed in the valve body 123, with one end of the first support 124 located within the recess 22. At least one air passage 121 is partially disposed in the valve body 123 and partially disposed in the first support 124. The second support 125 is disposed in the valve body 123 and located on the side of the first support 124 closer to the valve core 14. At least one seal 20 is partially located between the first support 124 and the second support 125.

[0057] In this embodiment, since a portion of the air passage 121 is located in the valve body 123 and another portion is located in the first support member 124, and one end of the first support member 124 is inserted into the recess 22, when the air supply line 30 is connected, the recess 22 is inflated, which facilitates the rapid expansion of the seal 20 to achieve a reliable seal.

[0058] In addition, since part of the seal 20 is located between the first support 124 and the second support 125, it can limit the seal 20. When the seal 20 is subjected to multiple inflation and deflation cycles, it can prevent the seal 20 from falling off, which helps to improve the installation stability and reliability of the seal 20 and further realize the reliable sealing of the sealing device 1.

[0059] In some embodiments, such as Figure 2 As shown, the valve body 123 has a limiting groove 126 on the side facing the valve core 14. At least one sealing element 20 includes a sealing body 24, a first leg 26, and a second leg 28. The opening 122 of at least one air passage 121 faces the sealing body 24. The first leg 26 is connected to the sealing body 24, and at least a portion of the first leg 26 is located between the first support 124 and the second support 125. The second leg 28 is connected to the sealing body 24 and is located on both sides of the sealing body 24, respectively, along with the first leg 26. The second leg 28, the sealing body 24, and the first leg 26 form a recess 22, and at least a portion of the second leg 28 is located within the limiting groove 126.

[0060] In this embodiment, at least a portion of the first leg 26 is located between the first support member 124 and the second support member 125, and at least a portion of the second leg 28 is located within the limiting groove 126, which can further improve the installation stability and reliability of the seal 20, prevent the seal 20 from falling off during multiple inflation and deflation cycles, and ensure the material discharge process.

[0061] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the valve body 12 also includes a valve cavity 127, a first interface 128, and a second interface 129. Along a first direction, the first interface 128 and the second interface 129 are located on opposite sides of the valve cavity 127 and communicate with it. The valve core 14 is movably disposed within the valve cavity 127. The valve core 14 includes a first communication port 142 and a second communication port 144. When the valve core 14 is in the first position, its outer wall is positioned opposite to the first interface 128 and the second interface 129, so that the sealing valve 10 is in a closed state. When the valve core 14 is in the second position, the first communication port 142 communicates with the first interface 128, and the second communication port 144 communicates with the second interface 129, so that the sealing valve 10 is in an open state.

[0062] Specifically, when the valve core 14 is in the first position, the outer wall of the valve core 14 is respectively positioned opposite to the first interface 128 and the second interface 129, that is, the first interface 128 and the second interface 129 are closed, the sealing valve 10 is closed, and the discharge device 2 stops discharging. Since at least two sealing elements 20 abut against the outer wall of the valve core 14 respectively, a reliable seal is achieved.

[0063] When the discharge device 2 needs to discharge material, at least two seals 20 are separated from the outer wall of the valve core 14, and the valve core 14 moves to the second position. At this time, the first connecting port 142 and the first interface 128 are connected, and the second connecting port 144 and the second interface 129 are connected to form a discharge channel to realize the discharge.

[0064] Optionally, at least a portion of the outer wall of the valve core 14 is configured as a spherical wall.

[0065] In a specific embodiment, in related technologies, the back pressure of the blast furnace is generally used to tighten the sealing ring, ensuring that the blast furnace does not leak air. In the vertical shaft furnace discharge equipment, it is necessary to seal the internal pressure of the vertical shaft furnace, and at the same time, according to process requirements, it is also necessary to open the channel to discharge the furnace charge into the intermediate tank. The lower part of the intermediate tank is equipped with a baffle and sealing valve. The intermediate tank performs processes such as pressure equalization and pressure release to discharge the furnace charge. Since the high-pressure area inside the vertical shaft furnace is filled with hydrogen, it is necessary to ensure absolute reliability of the seal and to be able to seal the pressure in the high-pressure area according to process requirements.

[0066] This utility model proposes a double-layer sealed dome valve (sealing device 1) driven by a hydraulic cylinder (hydraulic drive component 82), including a valve body 12, upper and lower flange interfaces (first interface 128 and second interface 129), a drive mechanism (drive assembly 80), a ball (valve core 14), and two upper and lower main sealing rings (sealing components 20) and related sealing ring mounting components (first support component 124 and second support component 125), etc.

[0067] The working process of the valve (sealing valve 10) is as follows: valve plate (valve core 14) closes → sealing ring (sealing element 20) is inflated → sealing ring is vented → valve plate rotates → valve plate opens → valve opens, completing one cycle.

[0068] When the valve (sealing valve 10) is closed: the hydraulic cylinder (hydraulic drive component 82) drives the crank 84 and shaft (rotating shaft 86), etc., to rotate the ball (valve core 14) 90 degrees. When it is in position, the adjusting screw (trigger component 90) on the crank 84 touches the two-position three-way mechanical slide valve (switching valve 70), inflating the rubber sealing ring (seal component 20) and causing the rubber sealing ring to expand and tightly wrap around the spherical valve core (valve core 14), forming a very reliable sealing ring. The seal is tight, thus isolating the high-pressure area from the low-pressure area and forming an effective seal.

[0069] When the valve (sealing valve 10) opens: the moment the hydraulic cylinder (hydraulic drive component 82) drives the crank 84 and shaft (rotating shaft 86) to rotate, the adjusting screw (trigger component 90) on the crank 84 disengages from the two-position three-way mechanical slide valve (switching valve 70), causing the rubber sealing ring (sealing component 20) to release air. In conjunction with the quick exhaust valve (exhaust valve 34), the sealing ring is depressurized, the sealing ring disengages from the valve core 14, and the valve core 14 rotates to the open position.

[0070] By employing two upper and lower rubber sealing rings (seal 20) and equipping them with two touch-type two-position three-way mechanical slide valves (switching valves 70), a dual-air-path control is formed to control the two rubber seals for inflation and deflation. During the opening and closing process, the dome (sealing valve 10) of the valve core 14 maintains a gap of 0.8mm-1.5mm with the rubber sealing ring. During rotation, the valve core 14 does not contact the sealing ring, resulting in low operating resistance and flexible rotation.

[0071] The dual-air-path sealing design ensures that if one sealing ring (seal 20) is damaged, the gas flow will increase. This increase can be detected by a flow meter (flow detection element 40) installed in the air path. The signal from this flow meter can be connected to the main control PLC (controller 50). An alarm will be triggered when an abnormal flow signal is detected, and the gas supply to that path will be cut off in time to prevent the damaged sealing ring from affecting the movement of the valve core 14. Because of the dual-sealing design, even if one sealing ring malfunctions, the other can still operate normally, ensuring the reliability of the seal.

[0072] Secondly, this embodiment provides a discharge device 2, which includes the sealing device 1 of the first aspect embodiment described above. Since the discharge device 2 shown in this embodiment includes the sealing device 1 of the first aspect embodiment described above, it possesses all the beneficial technical effects of the sealing device 1, and will not be described again here.

[0073] like Figure 6As shown, the discharge device 2 also includes an intermediate tank 200, and a sealing device 1 is disposed at at least one end of the intermediate tank 200. Optionally, the intermediate tank 200 includes a high-pressure cooling tank or a pressure relief tank.

[0074] Optionally, the intermediate tank 200 includes a tank body 220 and a discharge valve 210, with the discharge valve 210 located at the bottom of the tank body 220. There are two sealing devices 1, located on opposite sides of the intermediate tank 200 in the height direction. One sealing device 1 is located between the high-pressure tank 300 and the tank body 220, with its two ends connected to the baffle valve 310 of the high-pressure tank 300 and the tank body 220, respectively. The other sealing device 1 is connected to the side of the discharge valve 210 furthest from the tank body 220.

[0075] Thirdly, this embodiment provides an ironmaking system, including the sealing device 1 of the first aspect embodiment or the discharge device 2 of the second aspect embodiment. Since the ironmaking system shown in this embodiment includes the sealing device 1 of the first aspect embodiment or the discharge device 2 of the second aspect embodiment, it possesses all the beneficial technical effects of the sealing device 1 or the discharge device 2, which will not be elaborated here.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealing device, characterized in that, include: A sealing valve, comprising a valve body and a valve core, wherein the valve core is disposed inside the valve body and is movable relative to the valve body between a first position and a second position; At least two seals are provided on the valve body and located between the outer walls of the valve body and the valve core, and the at least two seals are arranged along a first direction; When the valve core is in the first position, the sealing valve is in the closed state, and at least two of the sealing elements abut against the outer wall of the valve core; when the valve core is in the second position, the sealing valve is in the open state, and at least two of the sealing elements are separated from the outer wall of the valve core.

2. The sealing device according to claim 1, characterized in that, The valve body is provided with at least two air passages, the openings of the at least two air passages respectively facing at least two of the seals, and the sealing device further includes: At least two air supply lines are provided, each of which is connected to the valve body and is connected to at least two air passages. When the valve core is in the first position, at least two of the air supply lines are connected; when the valve core is in the second position, at least two of the air supply lines are cut off, and at least two of the air supply lines are connected to the outside.

3. The sealing device according to claim 2, characterized in that, The sealing device further includes: A flow detection device is provided in at least one of the gas supply lines.

4. The sealing device according to claim 3, characterized in that, The sealing device further includes: The controller is electrically connected to the flow detection element; A control valve is provided on at least one of the gas supply lines and is electrically connected to the controller.

5. The sealing device according to claim 2, characterized in that, The sealing device further includes: A switching valve is provided in at least one of the gas supply lines, the switching valve including a first working position and a second working position; A drive assembly, connected to the valve core, is used to drive the valve core to move relative to the valve body; A trigger element is provided in the drive component; When the valve core is in the first position, the trigger is in contact with the switching valve, and the switching valve is in the first working position to open at least one of the gas supply lines; when the valve core is in the second position, the trigger is separated from the switching valve, and the switching valve is in the second working position to close at least one of the gas supply lines.

6. The sealing device according to claim 5, characterized in that, The driving component includes: Hydraulic drive components; A crank is connected to the hydraulic drive component, and a trigger is disposed on the crank; The rotating shaft is connected to the valve core, and the crank is connected to the rotating shaft.

7. The sealing device according to claim 2, characterized in that, At least one of the gas supply lines includes: Pipeline body; An exhaust valve is connected to either the pipeline body or the valve body, and is in communication with at least one of the gas passages. When the valve core is in the first position, the pipeline body is open, the exhaust valve is closed, and it is disconnected from the outside; when the valve core is in the second position, the pipeline body is closed, the exhaust valve is open, and it is connected to the outside.

8. The sealing device according to claim 2, characterized in that, At least one of the seals has a recess on the side opposite to the valve core, and the valve body includes: The valve body has a valve core movably disposed inside the valve body, and at least two sealing elements are respectively disposed on the valve body; A first support member is disposed on the valve body, one end of the first support member is located in the recess, and at least one part of the air passage is disposed on the valve body and the other part is disposed on the first support member; A second support member is disposed on the valve body and located on the side of the first support member close to the valve core, and at least a portion of the seal member is located between the first support member and the second support member.

9. The sealing device according to claim 8, characterized in that, The valve body is further provided with a limiting groove on the side facing the valve core, and at least one of the sealing elements includes: A sealing body, wherein at least one opening of the gas passage faces the sealing body; The first leg is connected to the sealing body, and at least a portion of the first leg is located between the first support member and the second support member; The second leg is connected to the sealing body and is located on both sides of the sealing body, respectively, along with the first leg. The second leg, the sealing body, and the first leg together form the recess, and at least a portion of the second leg is located within the limiting groove.

10. The sealing device according to any one of claims 1 to 9, characterized in that, The valve body is further provided with a valve cavity, a first interface and a second interface. Along the first direction, the first interface and the second interface are respectively located on both sides of the valve cavity and are respectively connected to the valve cavity. The valve core is movably disposed in the valve cavity. The valve core includes a first communication port and a second communication port. When the valve core is in the first position, the outer wall of the valve core is respectively disposed opposite to the first interface and the second interface, so that the sealing valve is in a closed state. When the valve core is in the second position, the first communication port is connected to the first interface, and the second communication port is connected to the second interface, so that the sealing valve is in an open state.

11. A discharge device, characterized in that, include: Intermediate tank; The sealing device according to any one of claims 1 to 10, wherein the sealing device is disposed at at least one end of the intermediate tank.

12. An iron smelting system, characterized in that, include: The sealing device as described in any one of claims 1 to 10; or The material discharge device as described in claim 11.

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