Magnetic flange connecting device

Abstract

This utility model provides a magnetic flange connection device, including a first flange and a second flange for connecting two adjacent pipes. A magnetic attraction assembly is provided on the connecting end faces of the first and second flanges. After the first and second flanges are mated, an annular cavity is formed on their mating surfaces, circumferentially surrounding the pipes. An inflatable sealing element is provided within the annular cavity, used to seal the connected first and second flanges when inflated. An inflation channel communicating with the annular cavity is formed on the peripheral wall of the first flange. The valve core of the inflatable sealing element is located on the extension path of the inflation channel, allowing an external air source to inflate the sealing element through the inflation channel and valve core. This design ensures a good sealing effect, avoids wear on the inflatable sealing element during installation, extends the life of the sealing element, and improves installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipe flange technology, and in particular to a magnetic flange connection device. Background Technology

[0002] In pipe connection and assembly, two connected pipes are usually connected by flange structures at the ends of the pipes to ensure fluid flow within the connected pipes.

[0003] Chinese utility model patent (authorization announcement number: CN219282669U) discloses a pipe flange. A main magnetic block is provided on the connecting end face of the first connecting part, and a secondary magnetic block is provided on the connecting end face of the second connecting part. The first and second connecting parts are tightly connected by the main and secondary magnetic blocks, improving the tightness of the connection. A recessed flange is provided on the connecting end face of the first connecting part, and a flange inserted into the recessed flange is provided on the connecting end face of the second connecting part. A sealing gasket is provided on the inner side of the flange, and the sealing gasket is placed on the inner side of the flange and mates with the recessed flange.

[0004] In the aforementioned patent, during the docking process of the first connecting part and the second connecting part, the sealing gasket and the flange need to be inserted into the concave flange. However, since the thickness of the flange and the sealing gasket is equal to the width of the concave flange, it is not convenient to place the sealing gasket into the concave flange, making installation inconvenient. If the thickness of the sealing gasket is reduced, the sealing effect will be affected. Utility Model Content

[0005] This utility model provides a magnetic flange connection device to improve the efficiency of pipe connection and assembly while ensuring the sealing of the connection.

[0006] This utility model provides a magnetic flange connection device, which includes a first flange and a second flange for connecting two adjacent pipes, and a magnetic component is provided on the connection end face of the first flange and the second flange. After the first flange and the second flange are mated, an annular cavity is formed on their mating surfaces, which is arranged around the circumference of the pipe. An inflatable sealing element is provided in the annular cavity, which is used to seal the connected first flange and second flange in an inflated state. An inflation channel communicating with the annular cavity is formed on the peripheral wall of the first flange. The valve core of the inflation seal is located on the extension path of the inflation channel. An external air source can inflate the inflation seal through the inflation channel and the valve core.

[0007] As one of the optional embodiments, the inflatable seal is annular, and in the uninflated state, the radial width of the inflatable seal is smaller than the radial width of the annular cavity. After inflation, the inner and outer annular surfaces of the inflation seal are respectively press-fitted with the inner wall of the annular cavity to seal the connected first and second flanges.

[0008] As one of the optional embodiments, the inflatable seal includes an inflatable sealing ring body and a valve core disposed on the inflatable sealing ring body; The valve core has an air intake slot and an air needle channel for inserting an air needle; the valve core is configured to open the air intake slot after the air needle is inserted into the air needle channel; and after the air needle is pulled out, the valve core can close the air intake slot under its own elastic force.

[0009] As one optional implementation, the valve core includes: The positioning seat is fixed to the inflatable sealing ring body; The elastic core is coaxially inserted into the positioning seat, and the two are axially limited by a limiting step. The air inlet is opened on the elastic core and located at one end that extends into the inflatable sealing ring, forming two opposing seam surfaces that abut against each other to seal. The air needle channel is located on the elastic core at the end away from the air inlet, and the air needle channel matches the diameter of a standard air needle.

[0010] As one optional implementation, the magnetic attraction component includes: The first magnetic component has a first mounting groove formed on the connecting end face of the first flange, and the first magnetic component is installed in the first mounting groove. The second magnetic component has a second mounting groove formed on the connecting end face of the second flange. The second magnetic component is installed in the second mounting groove and is used to magnetically connect with the first magnetic component.

[0011] As one alternative implementation, the first magnetic element and / or the second magnetic element are configured to adjust the strength of the magnetism.

[0012] As one of the optional embodiments, a buffer airbag is removably provided on the connection end face of the first flange and the second flange near the circumferential edge. The buffer airbag is made of a flexible material and is configured to buffer the first flange and the second flange during the magnetic attraction process of the first magnetic element and the second magnetic element.

[0013] As one of the optional embodiments, the first magnetic element and the second magnetic element are both annular and are respectively arranged around the radial outer side of the annular cavity opposite to each other.

[0014] As one of the optional embodiments, an insulating layer is provided on the wall of the first mounting groove and the wall of the second mounting groove.

[0015] As one of the optional embodiments, a first cavity is formed on the connection end face of the first flange, and a second cavity is formed on the second flange; When the first flange and the second flange are connected, the annular cavity is defined by the first cavity and the second cavity that are opposite to each other and are interconnected. The thickness of the inflatable seal is greater than the depth of the first cavity, and the thickness of the inflatable seal is greater than the thickness of the first cavity.

[0016] Compared with the prior art, the advantages of this utility model are: 1. When installing the inflatable seal, the inflatable seal in its uninflated state is filled into the annular cavity. After the first flange and the second flange are magnetically connected by the magnetic component, the air needle is inserted into the inflation channel and into the valve core of the inflatable seal to inflate it. After inflation, the inner and outer annular surfaces of the inflatable seal are press-fitted with the inner wall of the annular cavity, thereby sealing the connected first flange and second flange.

[0017] The above settings can ensure a good seal and prevent wear on the inflatable seal during installation, thus extending the life of the seal and improving installation efficiency.

[0018] 2. A buffer airbag is removably provided on the connection end face of the first flange and the second flange near the circumferential edge; the buffer airbag is made of flexible material and is configured to buffer the first flange and the second flange during the magnetic attraction process of the first magnetic component and the second magnetic component, thereby reducing the collision impact of the first flange and the second flange during the docking process. Attached Figure Description

[0019] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram showing multiple pipe sections connected in series by a magnetic flange connection device. Figure 2 It is an exploded view of the first flange, the second flange, the magnetic chuck assembly, and the gas-filled seal. Figure 3 This is the front view of the first flange; Figure 4 This is a side view of the first flange; Figure 5 This is a structural schematic diagram of an inflatable sealing component; Figure 6 yes Figure 5 A magnified view of a portion of point A in the middle.

[0021] Figure label: 1. First flange; 11. First mounting groove; 12. First cavity; 13. Inflation channel; 2. Second flange; 21. Second mounting groove; 22. Second recess; 3. Magnetic attraction assembly; 31. First magnetic component; 32. Second magnetic component; 4. Inflatable seal; 41. Inflatable sealing ring body; 42. Valve core; 4201. Air needle channel; 4202. Air inlet slot; 421. Positioning seat; 422. Elastic core; 423. Guide arc surface; 5. Mounting holes; 100. Pipeline. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] This utility model provides a magnetic flange connection device, which includes a first flange 1 and a second flange 2 for connecting two adjacent pipes 100. A magnetic component 3 is provided on the connection end face of the first flange 1 and the second flange 2. The first flange 1 and the second flange 2 are magnetically connected by the magnetic component 3.

[0024] After the first flange 1 and the second flange 2 are mated and magnetically connected, an annular cavity is formed on their mating surfaces, which is arranged around the circumference of the pipe 100. An inflation seal 4 is provided in the annular cavity. The inflation seal 4 is used to seal the connected first flange 1 and second flange 2 in an inflated state. An inflation channel 13 is formed on the peripheral wall of the first flange 1, which communicates with the annular cavity. The valve core 42 of the inflation seal 4 is located on the extension path of the inflation channel 13. An external air source can inflate the inflation seal 4 through the inflation channel 13 and the valve core 42.

[0025] In this embodiment of the invention, the inflatable seal 4 is annular. In the uninflated state, the radial width of the inflatable seal 4 is smaller than the radial width of the annular cavity. After inflation, the inner and outer annular surfaces of the inflatable seal 4 are press-fitted with the inner wall of the annular cavity to seal the connected first flange 1 and second flange 2.

[0026] During installation, the inflatable seal 4, in its uninflated state, is placed into the annular cavity. After the first flange 1 and the second flange 2 are magnetically connected via a magnetic assembly, an air needle is inserted into the inflation channel 13 and into the valve core 42 of the inflatable seal 4 to inflate it. After inflation, the inner and outer annular surfaces of the inflatable seal 4 are press-fitted against the inner wall of the annular cavity, thereby sealing the connected first flange 1 and second flange 2. This ensures a good seal while preventing wear on the inflatable seal during installation, extending its lifespan and improving installation efficiency.

[0027] The inflatable seal 4 includes an inflatable sealing ring 41 and a valve core 42 disposed on the inflatable sealing ring 41. The valve core 42 has an air inlet slit 4202 and an air needle channel 4201 for inserting an air needle. When inflating the inflatable seal 4 with an air needle, the end of the air needle is inserted into the inflation channel 13 and then into the air needle channel 4201 of the valve core 42. This allows the air needle to open the air inlet slit 4202 as it moves forward. During inflation, the elastic valve core 42 wraps around the air needle under its own elastic force, ensuring stable inflation of the inflatable sealing ring 41. After inflation is complete, the air needle is pulled out, and the air inlet slit 4202 automatically closes under the action of elastic force, completing the seal of the inflatable sealing ring 41 and preventing air leakage.

[0028] The valve core 42 includes a positioning seat 421 and an elastic core 422. The positioning seat 421 is fixed to the inflatable sealing ring 41 by heat fusion. The elastic core 422 is coaxially inserted inside the positioning seat 421, and the two are axially limited by a limiting step, so that the valve core 42 is stably fixed to the inflatable sealing ring 41.

[0029] The elastic core 422 can be made of rubber. The air inlet slit 4202 is opened on the elastic core 422 and located at one end that extends into the inflatable sealing ring 41, forming two opposing seam surfaces of the air inlet slit 4202 that abut against each other and seal. The air needle channel 4201 is located on the elastic core 422 at one end away from the air inlet slit 4202, and the air needle channel 4201 matches the diameter of the standard air needle.

[0030] A guide arc surface 423 is provided at one end of the air needle channel 4201 near the air inlet 4202. The guide arc surface 423 is used to reduce the wear of the elastic core 422 during the process of the air needle entering the air inlet 4202 from the air needle channel 4201, so as to ensure that the air needle is smoothly inserted into the air inlet 4202.

[0031] In this embodiment of the present invention, the magnetic attraction component 3 includes a first magnetic element 31 disposed on the connecting end face of the first flange 1 and a second magnetic element 32 disposed on the connecting end face of the second flange 2, wherein the first magnetic element 31 and the second magnetic element 32 are magnetically connected.

[0032] A first mounting groove 11 is formed on the connecting end face of the first flange 1, and a first magnetic element 31 is installed in the first mounting groove 11; a second mounting groove 21 is correspondingly formed on the connecting end face of the second flange 2, and a second magnetic element 32 is installed in the second mounting groove 21.

[0033] At least one of the first magnetic element 31 and the second magnetic element 32 is configured to adjust the strength of the magnetism.

[0034] A buffer airbag is removably provided on the connection end face of the first flange 1 and the second flange 2 near the circumferential edge; the buffer airbag is made of flexible material and is configured to buffer the first flange 1 and the second flange 2 when the first magnetic element 31 and the second magnetic element 32 are magnetically attracted to each other.

[0035] During installation, the buffer airbag is first placed between the first flange 1 and the second flange 2. Then, the first magnetic element 31 on the first flange 1 and the second magnetic element 32 on the second flange 2 are magnetically attracted to each other, so that the first flange 1 and the second flange 2 are brought close together and the energy is absorbed by the buffer airbag, reducing the collision impact of the first flange 1 and the second flange 2 during the docking process. Then, the magnetism of the first magnetic element 31 or the second magnetic element 32 is reduced, and the buffer airbag is removed.

[0036] In a preferred embodiment, an insulating layer is provided on the wall of the first mounting groove 11 and the wall of the second mounting groove 21.

[0037] A first cavity 12 is formed on the connecting end face of the first flange 1, and a second cavity 22 is formed on the second flange 2. When the first flange 1 and the second flange 2 are connected, the annular cavity is defined by the opposing and interconnected first cavity 12 and second cavity 22. The thickness of the inflatable seal 4 is greater than the depth of the first cavity 12, and the thickness of the inflatable seal 4 is greater than the thickness of the first cavity 12.

[0038] One end of the inflation channel 13 is connected to the first cavity 12, and the other end extends outward along the radial direction of the first flange 1 and passes through the first flange 1. The inflation channel 13 is not connected to the first mounting cavity.

[0039] In the first embodiment, both the first magnetic element 31 and the second magnetic element 32 are annular and are respectively arranged opposite to each other around the radial outer side of the annular mounting cavity. The depth of the first mounting cavity is less than the depth of the first recess 12. The first mounting cavity and the inflation channel 13 are located at different axial positions on the first flange 1, thereby ensuring that the inflation channel 13 avoids the first mounting cavity and is not interconnected.

[0040] In the second embodiment, both the first magnetic element 31 and the second magnetic element 32 are annular and are respectively arranged opposite to each other around the radial inner side of the annular mounting cavity (not shown in the figure). The depth of the first mounting cavity is greater than the depth of the first recess 12. The first mounting cavity and the inflation channel 13 are located at different axial positions on the first flange 1, thereby ensuring that the inflation channel 13 avoids the first mounting cavity and is not interconnected.

[0041] In this application, each pipe 100 has a first flange 1 and a second flange 2 fixed at both ends. The first flange 1 on one pipe 100 is connected to the second flange 2 on the adjacent pipe 100, so that multiple pipe sections 100 can be quickly connected in series.

[0042] To enhance the connection reliability between the first flange 1 and the second flange 2, the first flange 1 and the second flange 2 are also connected by a bolt assembly. Specifically, the first flange 1 and the second flange 2 are each provided with a plurality of mounting holes 5 arranged circumferentially. Bolts are passed through the mounting holes 5 on the two connecting flanges in sequence and then connected with nuts, thereby fixing the first flange 1 and the second flange 2.

[0043] In this embodiment of the present invention, the basic principle of the connection and assembly of the first flange 1 and the second flange 2 is as follows: First, install the inflation seal 4: Place the inflation seal 4 in the first cavity 12 of the first flange 1 when it is not inflated, and adjust the position of the inflation seal 4 so that the valve core 42 is aligned with the inflation channel 13 on the first flange 1.

[0044] Then, a buffer airbag is set between the first flange 1 and the second flange 2, and the first flange 1 and the second flange 2 are connected under the action of the magnetic suction assembly 3; bolts are inserted into the mounting holes 5 of the first flange 1 and the second flange 2; after reducing the magnetism of the magnetic suction assembly 3, the buffer airbag is removed, and the magnetism of the magnetic suction assembly 3 is adjusted so that the first flange 1 and the second flange 2 are connected and fitted. Then, inflate the inflatable seal 4: insert the air needle into the air needle channel 4201 and into the valve core 42, inflate the inflatable seal ring 41, and the volume of the inflatable seal ring 41 continuously expands in the annular cavity defined by the first cavity 12 and the second cavity 22 until the inner and outer annular surfaces of the inflatable seal ring 41 are respectively interference-fitted with the inner wall of the annular cavity, and then pull out the air needle; at this time, the inflatable seal ring 41 can seal the joint between the first flange 1 and the second flange 2. Finally, adjust the magnetism of the magnetic suction assembly 3 to adjust the tightness of the connection between the first flange 1 and the second flange 2; use nuts to connect to bolts, and use bolt assemblies to fix the first flange 1 and the second flange 2 in place.

[0045] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A magnetic flange connecting device, characterized in that, It includes a first flange and a second flange for connecting two adjacent pipes, and magnetic suction components are provided on the connection end faces of the first flange and the second flange. After the first flange and the second flange are mated, an annular cavity is formed on their mating surfaces, which is arranged around the circumference of the pipe. An inflatable sealing element is provided in the annular cavity, which is used to seal the connected first flange and second flange in an inflated state. An inflation channel communicating with the annular cavity is formed on the peripheral wall of the first flange. The valve core of the inflation seal is located on the extension path of the inflation channel. An external air source can inflate the inflation seal through the inflation channel and the valve core.

2. The magnetic flange connection device according to claim 1, characterized in that, The inflatable seal is annular, and in the uninflated state, the radial width of the inflatable seal is smaller than the radial width of the annular cavity. After inflation, the inner and outer annular surfaces of the inflation seal are respectively press-fitted with the inner wall of the annular cavity to seal the connected first and second flanges.

3. The magnetic flange coupling device of claim 1, wherein, The inflatable sealing element includes an inflatable sealing ring body and a valve core disposed on the inflatable sealing ring body; The valve core has an air intake slot and an air needle channel for inserting an air needle; the valve core is configured to open the air intake slot after the air needle is inserted into the air needle channel; and after the air needle is pulled out, the valve core can close the air intake slot under its own elastic force.

4. The magnetic flange connection device according to claim 3, characterized in that, The valve core includes: The positioning seat is fixed to the inflatable sealing ring body; The elastic core is coaxially inserted into the positioning seat, and the two are axially limited by a limiting step. The air inlet is opened on the elastic core and located at one end that extends into the inflatable sealing ring, forming two opposing seam surfaces that abut against each other to seal. The air needle channel is located on the elastic core at the end away from the air inlet, and the air needle channel matches the diameter of a standard air needle.

5. The magnetic flange coupling device of any one of claims 1 to 4, wherein, The magnetic attraction component includes: The first magnetic component has a first mounting groove formed on the connecting end face of the first flange, and the first magnetic component is installed in the first mounting groove. The second magnetic component has a second mounting groove formed on the connecting end face of the second flange. The second magnetic component is installed in the second mounting groove and is used to magnetically connect with the first magnetic component.

6. The magnetic flange connection device according to claim 5, characterized in that, The first magnetic element and / or the second magnetic element are configured to adjust the strength of the magnetism.

7. The magnetic flange connection device according to claim 5, characterized in that, A buffer airbag is removably provided on the connection end face of the first flange and the second flange near the circumferential edge; The buffer airbag is made of a flexible material and is configured to buffer the first flange and the second flange during the magnetic attraction process of the first magnetic element and the second magnetic element.

8. The magnetic flange connection device according to claim 5, characterized in that, Both the first and second magnetic components are annular and are arranged opposite each other on the radial outer side of the annular cavity.

9. The magnetic flange connection device according to claim 5, characterized in that, An insulating layer is provided on the wall of the first mounting groove and the wall of the second mounting groove.

10. The magnetic flange coupling device of claim 1, wherein, A first cavity is formed on the connecting end face of the first flange, and a second cavity is formed on the second flange; When the first flange and the second flange are connected, the annular cavity is defined by the first cavity and the second cavity that are opposite to each other and are interconnected. The thickness of the inflatable seal is greater than the depth of the first cavity, and the thickness of the inflatable seal is greater than the thickness of the first cavity.

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