Metal hose capable of being quickly spliced

Abstract

The invention relates to the technical field of metal hoses, in particular to a metal hose capable of being quickly spliced, which comprises a first flange joint, a second flange joint, two groups of metal hoses, a positioning assembly and a sealing assembly, wherein the first flange connector and the second flange connector are fixedly connected through multiple sets of locking bolts, the multiple sets of locking bolts are in transmission connection through the transmission assembly, the positioning assembly is used for positioning butt joint fixing of the first flange connector and the second flange connector, and the sealing assembly comprises a first sealing ring, a second sealing ring and a sealing ring. When the metal hose is spliced, an operator can synchronously rotate a plurality of groups of locking bolts to fixedly connect the end surfaces of the flange joint I and the flange joint II, so that the time for splicing two groups of metal hoses is greatly shortened, and the connection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal hoses, in particular to a metal hose that can be quickly spliced. Background Art

[0002] Metal hose is a highly flexible pipe connector consisting of a bellows, a mesh sleeve and a joint. It is widely used in industry, civil and special fields. In actual use, users often need to connect the ends of two sets of metal hoses according to the requirements of the pipeline length.

[0003] Most existing metal hose connection structures are butt-jointed through flanges. During the butt-jointing process, the flanges at the ends of two sets of metal hoses are fixedly connected by several sets of bolts. During the connection process, the several sets of bolts need to be installed one by one by an operator using a wrench, which is time-consuming and laborious.

[0004] Therefore, it is necessary to provide a metal hose that can be quickly spliced to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a metal hose that can be quickly spliced to solve the above technical problems.

[0006] To achieve the above object, the present invention provides a metal hose that can be quickly spliced, including a flange connector 1, a flange connector 2, two sets of metal hoses, a positioning assembly and a sealing assembly;

[0007] The distal ends of the flange joint 1 and the flange joint 2 are respectively connected to the ends of the corresponding metal hoses, wherein the end of the flange joint 1 is provided with a plurality of connection holes, a group of mounting rings are slidably mounted on the outer side of the flange joint 1, and locking bolts having the same number as the connection holes are rotatably mounted on the mounting rings, and each group of locking bolts is inserted through the corresponding connection holes, and the bottom end faces of the plurality of locking bolts away from the flange joint 1 are transmission-connected with the slewing ring rotatably mounted on the outer side of the mounting rings through the transmission assembly, and the slewing ring drives the plurality of locking bolts to rotate synchronously, and the end of the flange joint 2 is provided with a plurality of internal threaded holes, and the plurality of internal threaded holes are used for spiral insertion of the corresponding locking bolts;

[0008] The positioning assembly is installed at the proximal end of the flange joint 1 and the flange joint 2, and is used to position the flange joint 1 and the flange joint 2 for docking and fixing;

[0009] The sealing assembly includes a first sealing ring, a second sealing ring and a sealing gasket. The first sealing ring is convexly and fixedly installed at the bottom of the first flange joint. The second sealing ring is slidably installed in a sliding cavity with an annular cross-section formed on the end face of the second flange joint, and is linearly slid by a driving assembly installed on the second flange joint. When the second sealing ring slides to the bottom of the annular sliding cavity, the side facing the end face of the second flange joint can be used to place the sealing gasket.

[0010] As a further solution of the present invention, the transmission assembly includes multiple groups of transmission gears and a transmission gear ring. The multiple groups of transmission gears are coaxially installed at the ends of the corresponding locking bolts. The transmission gear ring is rotatably installed on the outer side of the rotary ring and is meshed and connected with the multiple groups of transmission gears.

[0011] As a further solution of the present invention, the transmission gear is detachably connected to the end of the corresponding locking bolt.

[0012] As a further solution of the present invention, the positioning assembly includes multiple groups of positioning columns, a positioning ring, a positioning tube and a positioning pin. The multiple groups of positioning rings and positioning columns are respectively uniformly installed on the circumferences of the first flange joint and the second flange joint. The positioning ring is provided with positioning holes for the corresponding positioning columns to be inserted. The positioning tube is fixedly installed in the installation holes formed on one side of the positioning ring. The positioning pin is slidably installed in the sliding channel inside the positioning tube, and its end is a hemispherical arc surface. One end of the positioning pin is elastically connected to the bottom of the positioning tube through a connecting spring, and the other end extends out of the installation hole of the positioning ring supported by the connecting spring. The side of the positioning column is provided with pin holes for the end of the positioning pin to be inserted.

[0013] As a further solution of the present invention, the driving assembly includes a driving ring and a driving column. The driving ring is rotatably installed on the outer side of the second flange joint, and multiple Z-shaped grooves are formed on its side. Multiple driving columns are fixedly installed on the outer side of the second sealing ring, and a lifting groove for the driving column to linearly slide is formed on the side of the second flange joint. The side of the driving column away from connecting the second sealing ring is slidably matched with the corresponding Z-shaped groove on the side of the driving ring.

[0014] As a further solution of the present invention, multiple groups of transmission blocks for manual frictional force application are arranged on the outer side of the driving ring.

[0015] As a further solution of the present invention, damping gaskets are arranged on the inner side of the installation ring. Due to the action of multiple groups of damping gaskets, the installation ring is damping slidably connected to the first flange joint.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] 1. In the present invention, by drivingly connecting multiple groups of locking bolts for connecting flange joint one and flange joint two, when driving one group of locking bolts to rotate, the transmission assembly can synchronously drive multiple groups of locking bolts to rotate together and screw into the corresponding internal threaded holes at the end of flange joint two. In the above operation, the operator only needs to perform the rotation and installation operation of one group of locking bolts. Compared with the prior art where the rotation and installation operations of multiple groups of locking bolts need to be carried out sequentially, the operation time is greatly shortened, and the number of screwing turns of multiple groups of locking bolts remains consistent, avoiding the problem that the deviation of the number of screwing turns of the locking bolts is relatively large, resulting in uneven extrusion of the sealing ring in the sealing assembly.

[0018] 2. In the present invention, when the locking bolts are not screwed to connect flange joint one and flange joint two, at this time, multiple groups of positioning columns can be inserted into the corresponding positioning rings for positioning docking of flange joint one and flange joint two. At the same time, during the docking process, the positioning pins in the positioning tube extend out and are inserted into the pin holes opened on the side of the positioning columns to achieve preliminary locking between flange joint one and flange joint two, facilitating the operator to perform the screwing operation of the locking bolts.

[0019] 3. In the present invention, by arranging a seal ring two that can move up and down in the sliding cavity of flange joint two, when placing the sealing ring, the drive assembly can drive the seal ring two in the sliding cavity to descend to the bottom of the sliding cavity. At this time, the upper end of the sliding cavity can be used to place the sealing ring. After flange joint one and flange joint two are fixedly connected, the seal ring one and the seal ring two can respectively squeeze both ends of the sealing ring to achieve sealing of the end faces of flange joint one and flange joint two. When flange joint one and flange joint two are separated, the drive assembly can drive the seal ring two to slide up and push out the sealing ring in the sliding cavity, and the operator can take out the sealing ring for inspection or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a metal hose that can be quickly spliced in the present invention.

[0021] Figure 2 It is a partial structural cross-sectional view of a metal hose that can be quickly spliced in the present invention

[0022] Figure 3 In the present invention Figure 2 An enlarged schematic view of part A in the present invention.

[0023] Figure 4 It is a bottom view of flange joint one in the present invention.

[0024] Figure 5 It is a top view of flange joint two in the present invention.

[0025] Figure 6 It is a partial cross-sectional view of flange joint 2 in the present invention.

[0026] Figure 7 For the present invention Figure 6 A magnified schematic diagram of point B in the middle.

[0027] In the accompanying drawings: 1. Flange joint 1; 2. Flange joint 2; 3. Metal hose; 4. Mounting ring; 5. Locking bolt; 6. Transmission assembly; 601. Transmission gear; 602. Transmission gear ring; 7. Slewing ring; 8. Positioning assembly; 801. Positioning column; 8011. Pin hole; 802. Positioning ring; 803. Positioning pin; 804. Connecting spring; 805. Positioning tube; 9. Driving assembly; 901. Transmission block; 902. Driving ring; 9021. Z-shaped groove; 903. Driving column; 10. Sealing assembly; 1001. Sealing ring 1; 1002. Sealing ring; 1003. Sealing ring 2. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0029] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, a metal hose that can be quickly spliced includes a flange joint 1, a flange joint 2, two groups of metal hoses 3, a positioning assembly 8 and a sealing assembly 10, wherein the distal ends of the flange joint 1 and the flange joint 2 are respectively connected to the ends of the corresponding metal hoses 3, wherein the end of the flange joint 1 is provided with a plurality of groups of connecting holes, a group of mounting rings 4 are slidably mounted on the outer side of the flange joint 1, and locking bolts 5 having the same number as the connecting holes are rotatably mounted on the mounting ring 4, and each group of locking bolts 5 is inserted through the corresponding connecting holes, and the bottom end faces of the plurality of groups of locking bolts 5 away from the flange joint 1 are transmission-connected with a slewing ring 7 rotatably mounted on the outer side of the mounting ring 4 through a transmission assembly 6, and the slewing ring 7 drives the plurality of groups of locking bolts 5 to rotate synchronously, and the end of the flange joint 2 is provided with a plurality of groups of internal threaded holes, and the plurality of groups of internal threaded holes are used for spiral insertion of the corresponding locking bolts 5;

[0030] The positioning assembly 8 is installed at the proximal end of the flange joint 1 and the flange joint 2, and is used to position the flange joint 1 and the flange joint 2 for docking and fixing;

[0031] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the sealing assembly 10 includes a first sealing ring 1001, a second sealing ring 1003, and a sealing ring 1002. The first sealing ring 1001 is fixedly and protrudingly installed at the bottom of the first flange joint 1. The second sealing ring 1003 is slidably installed in a ring-shaped sliding cavity opened on the end face of the second flange joint 2, and is linearly slid by a driving assembly 9 installed on the second flange joint 2. When the second sealing ring 1003 slides to the bottom of the ring-shaped sliding cavity, the side facing the end face of the second flange joint 2 can be used to place the sealing ring 1002;

[0032] In the present invention, a plurality of locking bolts 5 rotatably installed on the first flange joint 1 are drivingly connected through a transmission assembly 6. After the docking of the first flange joint 1 and the second flange joint 2 is completed, when an operator controls the rotation of one locking bolt 5, the plurality of locking bolts 5 can be driven to rotate synchronously, realizing the bolt connection between the first flange joint 1 and the second flange joint 2, greatly simplifying the operation of screwing the bolts;

[0033] And in the present invention, a second sealing ring 1003 that can be lifted and moved is arranged in the sliding cavity of the second flange joint 2. The second sealing ring 1003 can be lifted correspondingly according to the connection requirements. When connecting the first flange joint 1 and the second flange joint 2, the driving assembly 9 drives the second sealing ring 1003 to descend to the bottom of the sliding cavity to support the sealing ring 1002 placed in the sliding cavity. When the disconnection is released after disassembly, the driving assembly 9 can drive the second sealing ring 1003 to slide up to the top of the sliding cavity, eject the sealing ring 1002 on it out of the sliding cavity, and the operator can take out the sealing ring 1002 to observe or replace the sealing ring 1002.

[0034] As Figure 2 shown, in an embodiment of the present invention, the transmission assembly 6 includes a plurality of transmission gears 601 and a transmission gear ring 602. The plurality of transmission gears 601 are coaxially installed at the ends of the corresponding locking bolts 5. The transmission gear ring 602 is rotatably installed outside the rotary ring 7 and is meshed with the plurality of transmission gears 601. In the present invention, the number of locking bolts 5 for connecting the first flange joint 1 and the second flange joint 2 is six groups, and the number of corresponding transmission gears 601 is also six groups;

[0035] Of course, in actual design, the number of the locking bolts 5 can be flexibly adjusted according to requirements. When an operator drives a set of locking bolts 5 to rotate by a wrench, the driving gear 601 at the end of the locking bolt 5 can drive the driving gear ring 602 engaged therewith to rotate. Then, the driving gear ring 602 rotates to drive multiple sets of driving gears 601 and the correspondingly connected locking bolts 5 to rotate synchronously. Of course, in actual design, other components can also be selected to drive the driving gear ring 602 to rotate, so as to realize the transmission cooperation of multiple sets of driving gears 601 and the driving gear ring 602 in the present invention;

[0036] Further, the driving gear 601 is detachably connected to the end of the corresponding locking bolt 5. When the locking bolt 5 is damaged during installation, the locking bolt 5 can be detached from the corresponding driving gear 601 for replacement. In the present invention, an installation hole for inserting the end of the corresponding locking bolt 5 is provided at the bottom of the driving gear 601, and the locking bolt 5 and the driving gear 601 are fixedly connected by installation screws.

[0037] As Figure 2 and Figure 3 shown, in the embodiment of the present invention, the positioning assembly 8 includes multiple sets of positioning columns 801, positioning rings 802, positioning tubes 805 and positioning pins 803. Multiple sets of positioning rings 802 and positioning columns 801 are respectively and evenly installed on the circumferences of the flange joint one 1 and the flange joint two 2. Positioning holes for inserting the corresponding positioning columns 801 are provided in the positioning rings 802. The positioning tubes 805 are fixedly installed in the installation holes opened on one side of the positioning rings 802. The positioning pins 803 are slidably installed in the sliding channels in the positioning tubes 805, and the ends thereof are hemispherical arc surfaces. One end of the positioning pin 803 is elastically connected to the bottom of the positioning tube 805 through a connecting spring 804, and the other end extends out of the installation hole of the positioning ring 802 elastically supported by the connecting spring 804. A pin hole 8011 for inserting the end of the positioning pin 803 is provided on the side surface of the positioning column 801;

[0038] In the present invention, before the rotational threaded connection of multiple groups of locking bolts 5 is carried out, it is necessary to butt-fix the first flange joint 1 and the second flange joint 2 through the above-mentioned positioning assembly 8. During actual operation, the positioning post 801 can be positioned and inserted into the positioning ring 802. During the insertion process, the arc-shaped end face of the positioning post 801 first contacts the end of the positioning pin 803, and during further insertion, the positioning pin 803 is squeezed and compressed into the positioning tube 805. At this time, the connecting spring 804 located in the positioning tube 805 is in a compressed state, and it provides the elastic force to support the positioning pin 803 to extend out of the positioning tube 805. When the positioning post 801 slides along the inside of the positioning ring 802 until the pin hole 8011 on its side aligns with the positioning pin 803, at this time, the positioning pin 803 is supported by the elastic force of the connecting spring 804 to extend out and is positioned and inserted into the pin hole 8011. At this time, the locking of the positioning pin 803 and the positioning post 801 maintains the rough positioning of the connection between the first flange joint 1 and the second flange joint 2;

[0039] Further, in the present invention, when the first flange joint 1 and the second flange joint 2 are fixed to the final fitting state through multiple groups of locking bolts 5, at this time, the positioning post 801 is further inserted into the positioning ring 802 driven by the second flange joint 2, and the locking pin is squeezed and partially retracted into the positioning tube 805. And the first sealing ring 1001 in the sealing assembly 10 slides and inserts into the sliding cavity opened on the end face of the second flange joint 2. At this time, the second sealing ring 1003 is driven by the driving assembly 9 and slides down to the lowest position of the sliding cavity. The first sealing ring 1001 and the second sealing ring 1003 squeeze both sides of the sealing ring 1002 in the sliding cavity, so that the sealing ring 1002 seals the gap between the first flange joint 1 and the second flange joint 2.

[0040] Such as Figures 4 to 7As shown, in the embodiment of the present invention, the driving assembly 9 includes a driving ring 902 and a driving column 903. The driving ring 902 is rotatably mounted on the outer side of the flange joint 2, and a plurality of Z-shaped grooves 9021 are provided on its side. A plurality of driving columns 903 are fixedly mounted on the outer side of the sealing ring 1003, and a lifting groove for linear sliding of the driving column 903 is provided on the side of the flange joint 2. The driving column 903 is away from the side connected to the sealing ring 1003 and slides with the Z-shaped groove 9021 corresponding to the side of the driving ring 902. In the present invention, when sealing, When the ring 1003 is lifted and lowered, the driving column 903 and the sealing ring 1003 connected thereto are driven to lift and lower by rotating the driving ring 902 and cooperating with the Z-shaped groove 9021 on the side of the driving ring 902 to limit the driving column 903. Specifically, the Z-shaped groove 9021 described in the present invention includes an upper straight groove, a lower straight groove and a connecting groove for connecting the above two groups of straight grooves. In the present invention, when the driving ring 902 is rotated to limit the side lifting groove of the flange joint 2, the driving column 903 is driven to slide horizontally along the upper straight groove to the height of the Z-shaped groove 9021. When the driving ring 902 is at the end of the upper straight groove of the Z-shaped groove 9021, the sealing ring 1003 is driven by the driving column 903 to slide up to the high position of the sliding cavity. At this time, the sealing ring 1003 can move upward to push the sealing ring 1002 placed in the sliding cavity upward. On the contrary, when the driving ring 902 rotates in the opposite direction, the driving column 903 can slide from one end of the upper straight groove of the Z-shaped groove 9021 to the other side during the reversal of the driving ring 902, and finally slide to the end of the low position of the Z-shaped groove 9021 through the connecting groove and the lower straight groove. At this time, the sealing ring 1003 is driven by the driving column 903 to move downward. The sealing ring 1002 is placed on the sliding cavity, and the flange joint 1001 is lowered and slid to the lower position of the sliding cavity. The sealing ring 1003 is stored in the sliding cavity, and the sealing ring 1002 can be placed on it. When the flange joint 1001 and the flange joint 2002 are sealed and connected, the sealing ring 1001 and the sealing ring 1003 can be used to squeeze the two sides of the sealing ring 1002 respectively. In the process of squeezing the sealing ring 1002, since the sealing ring 1003 is in a compressed state, when the driving ring 902 is rotated by the external force, the sealing ring 1003 cannot be driven to move in the vertical direction.

[0041] like Figure 5 As shown, in an embodiment of the present invention, a plurality of groups of transmission blocks 901 for personnel to apply frictional force are arranged on the outer side of the drive ring 902. The drive ring 902 in the present invention is preferably driven and controlled by manpower. The operator holds the drive ring 902 and applies force to the transmission block 901 to drive the drive ring 902 to rotate, thereby controlling the lifting and sliding of the sealing ring 1003 at the end face of the flange joint 2 in the disassembled state.

[0042] like Figure 1As shown, in the embodiment of the present invention, a damping gasket is provided inside the mounting ring 4. Due to the action of multiple groups of damping gaskets, the mounting ring 4 is in damping sliding connection with the first flange joint 1. By designing multiple groups of damping gaskets, the mounting ring 4 cannot freely displace and slide outside the first flange joint 1, facilitating personnel to position and control the mounting ring 4.

[0043] In summary, in the present invention, the mounting ring 4 is slidably arranged outside the first flange joint 1, and at the same time, the multiple locking bolts 5 on the periphery of the first flange joint 1 are drivingly connected by the transmission assembly 6 provided on the mounting ring 4. Through the transmission of multiple transmission gears 601 and a transmission gear ring 602 in the transmission assembly 6, when an operator drives one of the locking bolts 5 to rotate, multiple locking bolts 5 can be synchronously driven to rotate together and be screwed into the corresponding internal threaded holes at the end of the second flange joint 2. This greatly shortens the time for the operator to turn the locking bolts 5, and the number of turns of the multiple locking bolts 5 remains the same, avoiding the problem that the deviation of the number of turns of the locking bolts 5 is relatively large, resulting in uneven extrusion of the sealing ring 1002 in the sealing assembly 10.

[0044] At the same time, a second sealing ring 1003 that can be lifted and moved is arranged in the sliding cavity of the second flange joint 2. When placing the sealing ring 1002, the second sealing ring 1003 in the sliding cavity can be driven by the driving assembly 9 to descend to the bottom of the sliding cavity. At this time, the upper end of the sliding cavity can be used to place the sealing ring 1003. After the first flange joint 1 and the second flange joint 2 are fixedly connected, the first sealing ring 1001 and the second sealing ring 1003 can respectively squeeze both ends of the sealing ring 1002 to achieve the sealing of the end faces of the first flange joint 1 and the second flange joint 2. When the first flange joint 1 and the second flange joint 2 are separated, the second sealing ring 1003 can be driven by the driving assembly 9 to slide upward and push out the sealing ring 1002 in the sliding cavity, and the operator can take out the sealing ring 1002 to check or replace the sealing ring 1002.

[0045] The above has described the preferred embodiments of the present invention in detail, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A metal hose that can be quickly spliced, characterized in that, It includes flange joint 1, flange joint 2, two sets of metal hoses, a positioning assembly and a sealing assembly; The distal ends of the flange joint 1 and the flange joint 2 are respectively connected to the ends of the corresponding metal hoses, wherein the end of the flange joint 1 is provided with a plurality of connection holes, a group of mounting rings are slidably mounted on the outer side of the flange joint 1, and locking bolts having the same number as the connection holes are rotatably mounted on the mounting rings, and each group of locking bolts is inserted through the corresponding connection holes, and the bottom end faces of the plurality of locking bolts away from the flange joint 1 are transmission-connected with the slewing ring rotatably mounted on the outer side of the mounting rings through the transmission assembly, and the slewing ring drives the plurality of locking bolts to rotate synchronously, and the end of the flange joint 2 is provided with a plurality of internal threaded holes, and the plurality of internal threaded holes are used for spiral insertion of the corresponding locking bolts; The positioning assembly is installed at the proximal end of the flange joint 1 and the flange joint 2, and is used to position the flange joint 1 and the flange joint 2 for docking and fixing; The sealing assembly includes sealing ring 1, sealing ring 2 and a sealing ring. The sealing ring 1 is protruding and fixedly installed at the bottom of the flange joint 1. The sealing ring 2 is slidably installed in a sliding cavity with an annular cross-section opened on the end face of the flange joint 2, and is driven to slide linearly by a driving assembly installed on the flange joint 2. When the sealing ring 2 slides to the bottom of the annular sliding cavity, its side facing the end face of the flange joint 2 can be used to place the sealing ring.

2. The metal hose capable of quick splicing according to claim 1, wherein, The transmission assembly includes multiple sets of transmission gears and transmission gear rings. The multiple sets of transmission gears are coaxially installed on the ends of corresponding locking bolts. The transmission gear rings are rotatably installed on the outside of the slewing ring and meshingly connected with the multiple sets of transmission gears.

3. The flexible metal hose capable of quick splicing according to claim 2, wherein, The transmission gear is detachably connected to the end of the corresponding locking bolt.

4. A flexible metal hose capable of rapid splicing according to claim 1, characterized in that, The positioning assembly includes multiple groups of positioning columns, positioning rings, positioning tubes and positioning pins. The multiple groups of positioning rings and positioning columns are evenly installed on the circumference of flange joint one and flange joint two respectively. Positioning holes are provided in the positioning rings for the corresponding positioning columns to be inserted for positioning. The positioning tube is fixedly installed in the mounting hole opened on one side of the positioning ring. The positioning pin is slidably installed in the sliding channel in the positioning tube, and its end is a hemispherical arc surface. One end of the positioning pin is elastically connected to the bottom of the positioning tube through a connecting spring, and the other end is supported by the connecting spring to extend out of the mounting hole of the positioning ring. The side of the positioning column is provided with a pin hole for the end of the positioning pin to be inserted.

5. A flexible metal hose capable of rapid splicing according to claim 1, characterized in that, The driving assembly includes a driving ring and a driving column. The driving ring is rotatably installed on the outside of the flange joint 2, and a plurality of Z-shaped grooves are provided on its side. A plurality of groups of driving columns are fixedly installed on the outside of the sealing ring 2, and a lifting groove is provided on the side of the flange joint 2 for linear sliding of the driving column. The side of the driving column away from the connection to the sealing ring 2 is slidably matched with the corresponding Z-shaped groove on the side of the driving ring.

6. The flexible metal hose capable of quick splicing according to claim 5, wherein A plurality of transmission blocks for frictional force application by personnel are arranged on the outer side of the driving ring.

7. A metal hose capable of rapid splicing according to claim 1, characterized in that, A damping gasket is arranged on the inner side of the mounting ring, and multiple groups of damping gaskets act to damp the sliding connection between the mounting ring and the flange joint.

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