Flange sealing mechanism

Abstract

The utility model relates to the technical field of flanges, in particular to a flange sealing mechanism which comprises a sealing flange, a flange binding face of the sealing flange and a flange binding face of a fixing flange are fixed through threads, and a first guide column and a second guide column are arranged on the flange binding face of the sealing flange. The first guide column and the second guide column penetrate through the through holes in the flange binding face of the fixing flange to conduct guiding and gravity supporting on the sealing flange in the installation process. A quick release structure is arranged in the sealing flange and seals the flange binding face of the sealing flange and the fixing flange, a sealing piece is arranged in the quick release structure and can be quickly disassembled and assembled, a separation structure is arranged outside the sealing flange, and the sealing flange and the fixing flange are separated through the separation structure. According to the utility model, the technical problem of rapidly detecting and replacing the flange sealing part of a large-scale pipeline by a small number of workers is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a flange sealing mechanism. Background Art

[0002] Flange, also known as flange or flange, is a mechanical component used to connect pipes, pipe fittings or equipment to improve sealing performance. Flange sealing is the process of establishing a sealed connection between two flanges to prevent gas or liquid leakage. This sealing performance is essential for equipment such as pipes, valves and pumps to ensure the safe and efficient operation of equipment and systems. At present, the sealing effect of flange sealing is not very good, and it is also time-consuming and labor-intensive to inspect and replace the flange sealing parts of large pipelines.

[0003] The patent name that has been published is a Chinese utility model patent with the publication number CN219888962U, which includes a flange body. The flange body is composed of a first flange and a second flange that fit each other, and a plurality of bolt holes are provided on the opposite surfaces of the two. Connecting blocks are fixedly installed at both ends of the first flange and the second flange, and threaded holes are provided inside the connecting blocks. Two connecting pipes are fixed inside the flange body by threads, and a docking mechanism is arranged between the first flange and the second flange to connect the two flanges. The sealing mechanism is arranged between the flange body and the connecting pipe, and has excellent sealing performance. The locking mechanism is evenly distributed on the side ends of the flange body to ensure a stable connection between the structures. The flange achieves excellent sealing performance and stable connection effect through a unique structural design and sealing mechanism, but when the sealing mechanism in the flange is replaced, the replacement process is relatively complicated. Utility Model Content

[0004] The purpose of the present application is to provide a flange sealing mechanism, which solves the technical problem of quickly inspecting and replacing the flange sealing parts of a large pipeline by a small number of workers.

[0005] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0006] The utility model provides a flange sealing mechanism, comprising a sealing flange, a fixing flange, a quick-release structure, a separation structure, a first guide column, a second guide column and a separation push rod.

[0007] Preferably, the flange fitting parts of the sealing flange and the fixed flange are fixed by threads, and the flange fitting surface of the sealing flange is provided with a first guide column and a second guide column. The first guide column and the second guide column pass through the through hole on the flange fitting surface of the fixed flange to guide and gravity support the sealing flange during the installation process.

[0008] Preferably, a seal is provided in the sealing flange through a quick-release structure, and the seal is provided between the sealing flange and the fixed flange. When the sealing flange and the fixed flange are separated, the seal is exposed, and the seal is quickly replaced through the quick-release structure.

[0009] Preferably, the separation structure is located outside the sealing flange, and the sealing flange and the fixed flange are separated by the setting of the separation structure. The separation structure includes a separation push rod, one end of which abuts against the sealing end face of the fixed flange, and the separation push rod is threadedly connected to the outside of the sealing flange; when the fixed flange and the sealing flange need to be separated, the bolts between the two are loosened, and the separation push rod is displaced by rotating the separation push rod, pushing the sealing flange to separate the two.

[0010] Preferably, the quick-release structure also includes a sealing channel, the sealing channel is fixedly mounted on the inner wall of the sealing flange, an annular protrusion is provided in the middle of the sealing channel, a sliding channel is slidably installed in the inner channel of the sealing channel, annular baffles are provided in the middle of the outer wall of the sliding channel and on the end away from the flange fitting surface of the sealing flange, the outer walls of the two layers of annular baffles are slidably fitted with the inner wall of the sealing channel, the annular protrusion in the middle of the sealing channel is located between the two layers of annular baffles of the sliding channel, and a spring is fixedly connected between the annular protrusion of the sealing channel and the annular baffle in the middle of the sliding channel.

[0011] Preferably, the quick-release structure also includes a snap ring, which is located at one end of the sealing channel close to the sealing flange fitting surface, and an annular snap groove is provided on the outer wall of the snap ring, and the snap ring and the sealing member are snapped together through the annular snap groove.

[0012] Preferably, the quick-release structure further comprises a conical channel, which is located at one end of the sealing channel close to the sealing flange fitting surface, and the inner wall of the conical channel is trumpet-shaped, fitting and sealing with the sealing member in the quick-release structure.

[0013] Preferably, the quick-release structure also includes a quick-release structure, and the quick-release structure includes a sealing conical ring, the outer portion of the sealing conical ring is conical, matching and fitting with the trumpet-shaped inner wall of the conical channel, a block is provided at one end of the sealing conical ring close to the clamping ring, the block of the sealing conical ring matches the clamping groove of the clamping ring, and a rotating plate is fixedly provided in the internal channel of the sealing conical ring.

[0014] Preferably, an annular groove is provided at one end of the outer wall of the sealing conical ring close to the flange fitting surface of the sealing flange, and the sealing ring is sleeved in the annular groove to seal the gap between the outer wall of the sealing conical ring and the wall surface of the conical channel; at least two fixing columns are provided on the end surface of the sealing conical ring close to the flange fitting surface of the sealing flange, and the fixing columns match the fixing holes on the sealing gasket, and the sealing gasket contacts the flange fitting surface of the fixed flange and is located between the contact surfaces of the sealing flange and the fixed flange, and the gasket surface of the sealing gasket is connected to the fitting surfaces of the sealing flange and the sealing conical ring to seal the gap between the sealing flange and the conical channel and the sealing conical ring.

[0015] Preferably, the separation structure includes a gear ring, which is arranged on the outer wall of the sealing flange, and the separation push rod is located on the flange of the sealing flange. At least two separation push rods are arranged, and a gear is arranged on the top of the separation push rod, and a thread is arranged on the bottom of the separation push rod. The separation push rod is meshed with the gear ring through the gear, and the separation push rod is threadedly connected with a threaded hole arranged on the flange of the sealing flange through the thread, and the threaded hole of the sealing flange passes through the flange of the sealing flange; when sealing, the bottom of the separation push rod contacts the flange sealing surface of the fixed flange; when replacing the seal, the separation push rod extends from the flange fitting surface of the sealing flange, pushes the flange fitting surface of the fixed flange, and separates the sealing flange and the fixed flange.

[0016] Preferably, the separation structure also includes a dust cover, which covers the gear ring and the separation push rod. The gear ring extending out of the dust cover is a smooth cylinder, and the end of the smooth cylinder extending from the gear ring is fixedly connected to a rotating column. The extended end of the gear ring is blocked by a first baffle, and the first baffle is fixedly set on the outer wall of the sealing flange.

[0017] The technical solution of the present application has at least the following advantages and beneficial effects:

[0018] When performing a seal inspection, the separation structure is manually rotated to separate the flange fitting surfaces of the sealing flange and the fixed flange, but the sealing flange and the fixed flange are supported and guided by the two guide columns so that they will not be completely separated, making it convenient for a small number of staff to inspect the flange sealing parts of large pipelines; when replacing the flange sealing parts, the sealing flange and the fixed flange are separated by the separation structure, and the quick-release structure pops out the quick-release structure, making it convenient for personnel to quickly take out the seals in the quick-release structure for replacement. After the replacement is completed, the separation structure is directly rotated to fit the sealing flange and the fixed flange for sealing, and then the fixing screws are tightened to complete the replacement of the sealing part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2This is a schematic diagram of the structure of the device from the first angle.

[0021] Figure 3 This is a schematic diagram of the structure of the device from the second angle.

[0022] Figure 4 It is a schematic cross-sectional view of the quick-release structure in the device.

[0023] Figure 5 This is a schematic cross-sectional view of the quick-release structure in the device from another angle.

[0024] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of A.

[0025] Figure 7 It is a schematic cross-sectional structural diagram of the separation structure in the device.

[0026] Figure 8 This is a schematic diagram of the cross-sectional structure of the separation structure in the device from another angle.

[0027] In the figure: 1-sealing flange; 2-fixed flange; 3-quick-release structure; 4-separation structure; 11-first guide column; 12-second guide column; 13-first baffle; 301-sealing channel; 302-sliding channel; 303-clamping ring; 304-sealing conical ring; 305-conical channel; 306-spring; 307-sealing ring; 308-fixed column; 309-sealing pad; 310-rotating plate; 401-dust cover; 402-gear ring; 403-separation push rod; 404-rotating column. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Example

[0031] Please refer to Figure 1-Figure 3 The utility model provides a flange sealing mechanism, which is characterized by comprising a sealing flange 1, a fixing flange 2, a quick-release structure 3, a separation structure 4, a first guide column 11, a second guide column 12, and a separation push rod 403;

[0032] Furthermore, the flange mating surfaces of the sealing flange 1 and the fixed flange 2 are fitted together and fixed through the threaded mounting holes provided therein. The flange mating surface of the sealing flange 1 is fixedly installed with a first guide column 11 and a second guide column 12 of different diameters. The different diameters can facilitate the docking of the guide columns by the staff during installation. When the sealing flange 1 and the fixed flange 2 are fitted together, the first guide column 11 and the second guide column 12 pass through the through holes on the mating surface of the fixed flange 2 to guide and gravity-support the sealing flange 1 during the installation process.

[0033] In the actual working environment, the sealing flange 1 is heavy. When installing screws in the threaded holes, at least two workers are required, one to hold the sealing flange 1 and the other to install the screws. After setting the first guide column 11 and the second guide column 12, only one worker is needed to fit the sealing flange 1 and the fixed flange 2 together. With the support of the first guide column 11 and the second guide column 12, the worker can directly install the screws on the sealing flange 1 and the fixed flange 2.

[0034] Furthermore, a seal is provided inside the sealing flange 1 through a quick-release structure 3. The seal is provided inside the sealing flange 1. When the sealing flange 1 and the fixed flange 2 are separated, the seal pops out of the sealing flange 1 through the elastic force inside the quick-release structure (3). The seal can be quickly replaced through the quick-release structure 3.

[0035] Furthermore, it also includes a separation structure 4, which is located outside the sealing flange 1. The separation structure 4 includes a separation push rod 403, which is threadedly connected to the outside of the sealing flange 1. One end of the separation push rod 403 abuts against the sealing end face of the fixed flange 2. When the separation push rod 403 rotates, the flange fitting surfaces of the fixed flange 2 and the sealing flange 1 are separated.

[0036] When the fixing flange 2 and the sealing flange 1 need to be separated, the bolts between the two are loosened, and then the separation push rod 403 is rotated to displace the separation push rod 403 and push the sealing flange 1 to separate the two.

[0037] Please refer to Figure 4-Figure 6 In some embodiments, the quick-release structure 3 includes a sealing channel 301 , a sliding channel 302 , a snap ring 303 , a seal, a conical channel 305 , and a spring 306 .

[0038] Furthermore, a sealing channel 301 is fixedly installed on the inner wall of the sealing flange 1, and a conical channel 305 is provided at one end of the sealing channel 301 close to the flange fitting surface of the sealing flange 1. The sealing channel 301 is provided with an internal channel, which is a circular water flow channel. An annular protrusion is provided in the middle of the internal channel of the sealing channel 301, and a sliding channel 302 is slidably installed in the internal channel of the sealing channel 301. An annular baffle is provided in the middle of the outer wall of the sliding channel 302 and on the end away from the flange fitting surface of the sealing flange 1. The outer walls of the two layers of annular baffles are slidably fitted with the inner wall of the channel of the sealing channel 301, and the annular protrusion in the middle of the internal channel of the sealing channel 301 is located between the two layers of annular baffles of the sliding channel 302 to limit the sliding position of the sliding channel 302. A spring 306 is fixedly connected between the annular protrusion in the middle of the internal channel of the sealing channel 301 and the annular baffle in the middle of the outer wall of the sliding channel 302, so that the sliding channel 302 is subjected to elastic force, ensuring that the sliding channel 302 can be reset by elastic force after sliding.

[0039] Furthermore, a clamping ring 303 is provided at one end of the sealing channel 301 close to the flange fitting surface of the sealing flange 1, and a circle of annular groove is provided on the outer wall of the clamping ring 303. A sealing component is provided inside the quick-release structure, and the sealing component includes a sealing conical ring 304. An annular clamping block is provided at one end of the sealing conical ring 304 close to the clamping ring 303, and the sealing conical ring 304 is clamped with the annular groove of the clamping ring 303 through the annular clamping block for temporary fixation.

[0040] Specifically, when replacing a worn seal, the sealing flange 1 and the fixed flange 2 are separated for a distance until the entire seal is completely exposed. When the quick-release structure 3 is not blocked by the fixed flange 2, the sliding channel 302 will rebound and slide back to its original position due to the elastic force of the spring 306, and the quick-release structure connected to the sliding channel 302 will be pushed out from the inside of the sealing flange 1, exposing the seal in the quick-release structure to facilitate replacement between personnel.

[0041] Furthermore, the sealing member includes a sealing conical ring 304, a sealing ring 307, a fixing column 308, a sealing gasket 309, and a rotating plate 310, wherein the sealing ring 307 and the sealing gasket 309 have a sealing function.

[0042] The sealing conical ring 304 is provided with an annular clamping block at one end close to the clamping ring 303, and a circle of annular clamping groove is provided on the outer wall of the clamping ring 303. The annular clamping groove of the clamping ring 303 matches the annular clamping block of the sealing conical ring 304. A rotating plate 310 is fixedly provided in the internal channel of the sealing conical ring 304. The rotating plate 310 facilitates personnel to take and rotate the entire quick-release structure. When clamping or disengaging, two openings are provided on the annular clamping groove of the clamping ring 303. By rotating the rotating plate 310, the annular clamping block of the sealing conical ring 304 enters or disengages from the annular clamping groove from the opening on the annular clamping groove of the clamping ring 303, thereby realizing the connection and disengagement of the clamping ring 303 and the sealing conical ring 304.

[0043] Furthermore, the sealing conical ring 304 is conical on the outside and a through channel on the inside. The diameter of the channel is the same as the size of the sliding channel 302. The trumpet-shaped inner wall of the conical channel 305 matches and fits with the conical surface of the sealing conical ring 304. An annular groove is provided at one end of the outer wall of the sealing conical ring 304 close to the flange fitting surface of the sealing flange 1. The sealing ring 307 is sleeved in the annular groove to seal the gap between the outer wall of the sealing conical ring 304 and the wall of the conical channel 305.

[0044] When sealing the flange fitting parts of the sealing flange 1 and the fixed flange 2, the sealing conical ring 304 moves toward the inside of the sealing flange 1 through the clamping of the clamping ring 303, and the sealing ring 307 contacts the inner wall of the conical channel 305. The trumpet-shaped inner wall of the conical channel 305 makes the sealing ring 307 follow the sealing conical ring 304 to move toward the inside of the sealing flange 1. The force applied to the inner wall of the conical channel 305 becomes greater and greater, thereby ensuring the sealing effect of the sealing ring 307.

[0045] Furthermore, at least two fixing columns 308 are provided on the end surface of the sealing conical ring 304 close to the flange fitting surface of the sealing flange 1. The fixing columns 308 match the fixing holes on the sealing gasket 309. The fixing holes of the sealing gasket 309 are not through-holes. Friction resistance exists between the fixing columns 308 and the fixing holes of the sealing gasket 309, so as to prevent the sealing gasket 309 installed on the fixing columns 308 from being easily detached. The sealing gasket 309 contacts the flange fitting surface of the fixed flange 2 and is located between the flange fitting surfaces of the sealing flange 1 and the fixed flange 2. The gasket surface of the sealing gasket 309 covers the sealing surfaces of the sealing flange 1 and the sealing conical ring 304, so as to seal the gap between the sealing flange 1 and the conical channel 305 and the sealing conical ring 304.

[0046] Please refer to Figure 7-Figure 8 In some embodiments, the separation structure 4 includes a dust cover 401, a gear ring 402, a separation push rod 403, a rotating column 404, and a first baffle 13.

[0047] Furthermore, a gear ring 402 is provided on the outer wall of the sealing flange 1, and a separation push rod 403 is located on the flange of the sealing flange 1. At least two separation push rods 403 are provided, and a gear is provided on the top of the separation push rod 403, and a thread is provided on the bottom. The separation push rod 403 is meshed with the gear ring 402 through the gear, and the separation push rod 403 is connected to the flange of the sealing flange 1 through a thread.

[0048] When the flanges are separated, the gear ring 402 rotates, driving the separation push rod 403 to rotate in the flange of the sealing flange 1, and the bottom of the separation push rod 403 applies thrust to the fixed flange 2; the separation push rod 403 is displaced, and the gear of the separation push rod 403 moves on the teeth of the gear ring 402. The thickness of the teeth of the gear ring 402 is thicker than the thickness of the gear of the separation push rod 403, ensuring that the separation push rod 403 is still engaged with the gear ring 402 when it is displaced.

[0049] Specifically, when the seal at the flange fitting part is inspected and replaced, since the sealing flange 1 and the fixing flange 2 are used for large-scale pipeline transportation, the overall weight is heavy and it is troublesome to disassemble, so the sealing flange 1 and the fixing flange 2 are not completely separated through this part.

[0050] Furthermore, the gear ring 402 extending out of the dust cover 401 is a smooth cylinder, and the end of the smooth cylinder extending from the gear ring 402 is fixedly connected to a rotating column 404. The end of the smooth cylinder extending from the gear ring 402 is blocked by the first baffle 13, and the first baffle 13 is fixedly set on the outer wall of the sealing flange 1. Manually rotating the rotating column 404 can drive the gear ring 402 to rotate.

[0051] The working principle of the device is as follows: when replacing the seal in the quick-release structure 3, loosen the fixing screws on the sealing flange 1 and the fixed flange 2, and then rotate the rotating column 404 to drive the gear ring 402 to rotate. The gear ring 402 drives the separation push rod 403 to rotate in the flange of the sealing flange 1. The bottom of the separation push rod 403 extends from the flange sealing surface of the sealing flange 1, and applies a thrust to the fixed flange 2. The fixed flange 2 is fixed on the equipment. At this time, the sealing flange 1 is subjected to the thrust of the threaded rotation of the separation push rod 403 and begins to separate from the fixed flange 2. The sealing flange 1 and the fixed flange 2 are guided and supported when separated by the first guide column 11 and the second guide column 12. As the sealing flange 1 and When the fixed flange 2 is separated, the seal in the quick-release structure 3 is ejected from the sealing flange 1 due to the elastic force inside the quick-release structure 3, but it will not be detached from the quick-release structure 3 due to the clamping connection with the clamping ring 303. When the seal is completely ejected from the sealing flange 1, the separation is stopped. At this time, the worn sealing ring 307 and sealing gasket 309 in the seal can be quickly replaced directly, or the rotating plate 310 can be manually twisted to disengage the clamping ring 303 and the sealing conical ring 304, and the entire seal can be quickly disassembled and replaced. After the replacement is completed, the rotating column 404 is rotated again to retract the separation push rod 403, so that the flange sealing surfaces of the sealing flange 1 and the fixed flange 2 are re-fitted together to achieve sealing.

[0052] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution of the present invention, and the scope of the present invention is defined by the attached claims.

Claims

1. A flange sealing mechanism, characterized in that: It comprises a sealing flange (1), a fixing flange (2), a quick-release structure (3), a separation structure (4), a first guide column (11), a second guide column (12), and a separation push rod (403); The flange mating surfaces of the sealing flange (1) and the fixed flange (2) are detachably connected by bolts, and a first guide column (11) and a second guide column (12) are fixedly arranged on the flange mating surface of the sealing flange (1), and the first guide column (11) and the second guide column (12) are slidably connected to the through holes on the flange mating surface of the fixed flange (2); A detachable sealing member is arranged in the sealing flange (1) via a quick-release structure (3); the sealing member is arranged inside the sealing flange (1); when the sealing flange (1) and the fixed flange (2) are separated, the sealing member pops out of the sealing flange (1) via the quick-release structure (3); The separation structure (4) is located outside the sealing flange (1), and the separation structure (4) includes a separation push rod (403). The separation push rod (403) is threadedly connected to the outside of the sealing flange (1), and one end of the separation push rod (403) abuts against the sealing end face of the fixed flange (2). When the separation push rod (403) rotates, the flange mating surfaces of the fixed flange (2) and the sealing flange (1) are separated.

2. A flange sealing mechanism according to claim 1, characterized in that: The quick-release structure (3) comprises a sealing channel (301), the sealing channel (301) is fixedly mounted on the inner wall of the sealing flange (1), an annular protrusion is arranged in the middle of the inner wall of the inner channel of the sealing channel (301), a sliding channel (302) is slidably mounted in the inner channel of the sealing channel (301), an annular baffle is arranged in the middle of the outer wall of the sliding channel (302) and at one end away from the flange contact surface of the sealing flange (1), the annular baffle in the middle of the outer wall of the sliding channel (302) and the outer wall of the sliding channel (302) away from the sealing flange (1) are The annular baffles at one end of the flange fitting surface of the flange (1) are slidably fitted with the inner wall of the inner channel of the sealing channel (301); the annular protrusions on the inner wall of the inner channel of the sealing channel (301) are located between the two layers of annular baffles of the sliding channel (302); a spring (306) is fixedly connected between the annular protrusions on the inner wall of the inner channel of the sealing channel (301) and the annular baffles in the middle of the outer wall of the sliding channel (302); a sealing member is arranged between the sliding channel (302) and the fixed flange (2); and the sliding channel (302) applies elastic force to the sealing member through the spring (306).

3. A flange sealing mechanism according to claim 1, characterized in that: The quick-release structure (3) also includes a snap ring (303), which is fixedly mounted on one end of the sliding channel (302) close to the flange fitting surface of the sealing flange (1), and an annular groove is provided on the outer wall of the snap ring (303). The snap ring (303) fixed on the sliding channel (302) is connected to a sealing member, and the sealing member includes a sealing conical ring (304), and an annular clamping block is provided on one end of the sealing conical ring (304) close to the snap ring (303). The sealing conical ring (304) is connected to the snap ring (303) through an annular clamping block. The annular groove of the clamping ring (303) is clamped with two openings, and the annular clamping block of the sealing conical ring (304) enters the annular groove through the openings. A rotating plate (310) is fixedly arranged in the internal channel of the sealing conical ring (304), and the rotating plate (310) is close to the flange fitting surface of the sealing flange (1); when the clamping ring (303) is clamped or disengaged from the sealing conical ring (304), the rotating plate (310) rotates at a certain angle, driving the annular clamping block of the sealing conical ring (304) to rotate to the opening on the annular groove of the clamping ring (303) to be disengaged or clamped.

4. A flange sealing mechanism according to claim 3, characterized in that: The quick-release structure (3) further comprises a conical channel (305), the conical channel (305) being located at one end of the sealing channel (301) close to the flange-fitting surface of the sealing flange (1), the inner wall of the conical channel (305) being trumpet-shaped, and the trumpet-shaped inner wall of the conical channel (305) being fitted with the sealing member; The sealing member is configured as a sealing ring (307), the outer portion of the sealing conical ring (304) is conical and matches and fits with the trumpet-shaped inner wall of the conical channel (305), an annular groove is provided at one end of the outer wall of the sealing conical ring (304) close to the flange fitting surface of the sealing flange (1), and the sealing ring (307) is sleeved in the annular groove; when sealing is performed between the conical channel (305) and the sealing conical ring (304), the sealing ring (307) fits and squeezes with the inner wall of the conical channel (305).

5. A flange sealing mechanism according to claim 4, characterized in that: The sealing conical ring (304) is provided with at least two fixing columns (308) on the end surface close to the flange contact surface of the sealing flange (1), and the fixing columns (308) are provided with sealing elements; The sealing member is configured as a sealing gasket (309), the fixing column (308) matches the fixing hole on the sealing gasket (309), the sealing gasket (309) contacts the flange fitting surface of the fixing flange (2), and is located between the contact surfaces of the sealing flange (1) and the fixing flange (2), and the gasket surface of the sealing gasket (309) covers the fitting surface of the sealing flange (1) and the sealing conical ring (304).

6. A flange sealing mechanism according to claim 1, characterized in that: The separation push rod (403) is located on the flange of the sealing flange (1), and at least two separation push rods (403) are provided. A gear is provided on the top of the separation push rod (403), and a thread is provided on the bottom. The separation push rod (403) is meshed with a gear ring (402) through the gear. The gear ring (402) is provided on the outer wall of the sealing flange (1). The separation push rod (403) is threadedly connected to the sealing flange (1) through the thread provided on the bottom.

7. A flange sealing mechanism according to claim 1, characterized in that: The separation structure (4) also includes a dust cover (401), the dust cover (401) covers the gear ring (402) and the separation push rod (403), the gear ring (402) extending out of the dust cover (401) is a smooth cylinder, the end of the smooth cylinder extending from the gear ring (402) is fixedly connected to a rotating column (404), the end of the smooth cylinder extending from the gear ring (402) is in contact with a first baffle (13), and the first baffle (13) is fixedly arranged on the outer wall of the sealing flange (1).

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