An assembled welding-free flange and a mounting method thereof

Abstract

The present application relates to container flange joint technical field, especially to a kind of assembled welding-free flange and its installation method, including flow guide pipe, the both ends of the flow guide pipe are equipped with connecting portion and clamping assembly respectively;Connecting portion, it is used to connect external pipeline for being equipped with in container outside;Clamping assembly, including limiting piece and clamping piece;In use state, the limiting piece and clamping piece are equipped with in the both sides of container wall, for the flow guide pipe is fixed in the container wall, to realize the flow guide pipe and container inner cavity conduction;The flange of the present application is detachable and assembled as a whole, and the flange body and the barrel container can be assembled and disassembled, the present application can realize the flange installation and disassembly of container flow guide port outside large barrel container, avoid the drawbacks brought by traditional welding mode.

Description

A prefabricated weldless flange and its installation method Technical Field

[0001] This invention relates to the field of container flange joint technology, and in particular to an assembled weld-free flange and its installation method. Background Technology

[0002] In the use of larger drum containers, it is necessary to introduce or export the liquid inside. The traditional method is to make a through hole at the bottom edge of the drum container and weld a flange to the through hole to connect an external pipe for introducing or exporting the liquid. The welded flange is generally not suitable for reuse and requires forceful disassembly, which can easily damage the drum container and the flange.

[0003] To address the aforementioned issues, this application proposes an assembled, weld-free flange and its installation method. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention proposes an assembled weldless flange and its installation method.

[0005] This invention provides an assembled, weld-free flange, comprising:

[0006] A flow guide tube, wherein both ends of the flow guide tube are respectively provided with a connecting part and a locking assembly;

[0007] A connecting part, located on the outside of the container, is used to connect to external pipes;

[0008] The locking assembly includes a limiting member and a locking member; in use, the limiting member and the locking member are located on both sides of the container wall to fix the guide tube to the container wall so as to realize the communication between the guide tube and the inner cavity of the container.

[0009] As a technical solution of the present invention, one end of the guide tube of the locking assembly is provided with an external thread, the locking member is located on the inner side of the container wall and adopts a nut adapted to the external thread, and the limiting member is located on the outer side of the container wall and is provided with a reinforcing rib between it and the connecting part.

[0010] As a technical solution of the present invention, the guide tube includes an inner tube and an outer tube coaxial with the inner tube. The limiting member includes a cover connected to the end of the inner tube. The cover has an opening structure and a limiting component movably embedded in the cover. The outer tube has a driving mechanism for driving the limiting component to protrude out of or disengage from the opening structure. The engaging member is sleeved on the outer tube.

[0011] As a technical solution of the present invention, the limiting component includes a first limiting block that can protrude from or detach from the opening structure, a first base, and a first spring disposed between the first limiting block and the first base. The first base is provided with an inner cylinder and an outer cylinder, and the inner cylinder and the outer cylinder form a locking interval. One end of the first spring is embedded in the locking interval, and the bottom of the first limiting block is provided with a rod that is movably embedded in the inner cylinder.

[0012] The cover has a double-layer structure, including an inner ring and an outer ring. A sandwich section with one end closed is formed between the outer ring and the inner ring. The opening structure is opened on the outer ring. A first sliding groove is provided on the inner ring or the outer ring at the position corresponding to the opening structure, allowing the limiting component to move.

[0013] The driving mechanism includes a slide rail, a first slider, and a transmission component connecting the first slider and the rod on the outer tube. The first slider can reciprocate along the length of the slide rail. The slide rail is provided with a first limiting groove for positioning the first slider. In use, when the first slider is embedded in the first limiting groove, the first limiting block is completely disengaged from the opening structure.

[0014] The inner and outer cylinders are provided with transmission ports through which the transmission components pass.

[0015] As a technical solution of the present invention, one end of the outer tube is provided with the connecting part, and the other end is threadedly connected to the locking part. One end of the inner tube is provided with a pressing part, and the other end is threadedly connected to the inner ring. The connecting part is provided with a pressing groove corresponding to the position of the pressing part. In use, the pressing part and the pressing groove are completely fitted together.

[0016] As a technical solution of the present invention, the transmission component is composed of at least two traction ropes, which are connected by a connector. Both the inner cylinder and the outer tube are provided with pulley structures for the traction ropes to pass through.

[0017] As a technical solution of the present invention, the limiting component includes a second limiting block that can protrude from or detach from the opening structure, a second base, and a second spring disposed between the second limiting block and the second base. The second base includes a fixed part and a rotating part that can rotate along the circumferential direction of the fixed part. The rotating part is provided with a first cylinder and a cylindrical block disposed in the first cylinder. The bottom of the second limiting block is provided with a second cylinder that is movably embedded in the first cylinder. One end of the second spring is disposed in the second cylinder, and the other end is sleeved on the cylindrical block.

[0018] The cover has a double-layer structure, including an inner ring and an outer ring. The opening structure is located on the outer ring, and a closed interlayer section is formed between the outer ring and the inner ring. The outer ring has a second sliding groove corresponding to the position of the opening structure, which allows the limiting component to move. The second sliding groove is connected to the opening structure. The inner ring has a third sliding groove, and the fixing part has a second slider, which can slide along the length direction of the third sliding groove.

[0019] The driving mechanism includes a first driving member and a transmission rod connecting the first driving member and the rotating part. The first driving member is movably disposed at the end of the outer tube and can rotate along the circumference of the outer tube, so that when the first driving member is rotated, the transmission rod drives the rotating part to rotate synchronously. When the first driving member rotates at an angle, the second limiting block completely disengages from or protrudes from the opening structure.

[0020] As a technical solution of the present invention, one end of the inner tube is threadedly connected to the inner ring, and the other end is provided with the connecting part; one end of the outer tube is threadedly connected to the locking member.

[0021] With the second limiting block protruding from the opening structure, the end face of the opening structure and the end face of the second limiting block form a tangential arc.

[0022] The driving mechanism further includes a second driving member, and the transmission rod includes a first transmission rod connecting the first driving member and the second driving member and a second transmission rod connecting the rotating part and the second driving member, so that under the action of the first transmission rod, the second driving member rotates synchronously with the first driving member, thereby driving the rotating part to rotate synchronously under the action of the second transmission rod;

[0023] A support member is provided between the outer tube and the inner tube, and the support member is provided with an arc-shaped groove for the first transmission rod to pass through;

[0024] The outer ring is provided with a second limiting groove, and in use, the second driving member is completely fitted with the second limiting groove.

[0025] A second aspect of the present invention provides a method for installing a prefabricated, weld-free flange, comprising the following steps:

[0026] S001, Assemble the cover:

[0027] Move the limiting component along the first slide groove until the first limiting block protrudes from the opening structure and the bottom of the first base is embedded in the slot opened on the inner ring.

[0028] S002, Assemble the drive mechanism:

[0029] Slide the first slider along the slide rail and connect the two traction ropes using the connector.

[0030] S003, Assemble the flow guide pipe;

[0031] Insert the connecting part into the inner tube, and pass one end of the inner tube through the outer tube;

[0032] S004, Connecting the cover and the guide tube:

[0033] Hold the cap and rotate the clamping part at one end of the inner tube so that the inner ring of the cap and the inner tube are connected by the thread until the clamping part of the inner tube fits into the clamping groove on the connecting part, and the inner side of the connecting part fits into the end of the outer tube.

[0034] S005, Fine-tuning:

[0035] Rotate the cover to make the clamping part of the inner tube tightly press against the clamping groove on the connecting part, and / or rotate the clamping part of the inner tube to make the first limiting block and the slide rail at the same horizontal line to complete the fine adjustment;

[0036] S006, Assembly Card Assembly:

[0037] Push the first slider so that it moves into the first limiting groove. The first limiting block completely disengages from the opening structure. The locking component is then fitted along the cover into the threaded area on the outer tube, completing the assembly of the locking component and the overall weld-free flange.

[0038] S007, Installation:

[0039] After the welding-free flange is assembled in step S006, the cover is inserted into the container so that the opening structure is located in the inner cavity of the container. The first slider is moved so that the first slider is disengaged from the first limiting groove. Under the action of the first spring, the first limiting block protrudes out of the opening structure and pulls the welding-free flange outward so that the first limiting block fits against the inner wall of the container. The locking member is rotated so that the locking member fits tightly against the outer wall of the container and the first limiting block fits tightly against the inner wall of the container under the action of the locking member and the outer pipe thread, thus completing the installation.

[0040] S008, Disassembly:

[0041] Release the locking assembly, push the first slider, so that the first slider moves into the first limiting groove, the first limiting block completely disengages from the opening structure, and pulls out the weldless flange, so that the cover body separates from the container.

[0042] A second aspect of the present invention also provides a method for installing a prefabricated, weld-free flange, comprising the steps of:

[0043] S100, Assembly cover:

[0044] Align the second slider on the fixed part with the third slide groove, rotate the rotating part so that the second limiting block is aligned with the second slide groove, push the limiting component so that the second slider moves along the third slide groove and the second limiting block moves along the second slide groove, rotate the rotating part so that the second limiting block protrudes from the opening structure;

[0045] S200, equipped with guide tube and drive mechanism:

[0046] The second transmission rod is connected to the fixed part and the second driving member, so that the second driving member is fully embedded in the second limiting groove;

[0047] After connecting the inner end of the first transmission rod to the second driving component, the outer tube is then fitted along the first transmission rod.

[0048] Align the arc-shaped groove on the support with the first transmission rod, and insert the support along the first transmission rod into the outer tube;

[0049] The first driving component is connected to the outer end of the first transmission rod;

[0050] Insert the inner tube, rotate the connecting part at one end of the inner tube so that the end of the inner tube is threadedly connected to the inner ring of the cover until the connecting part is in contact with the first driving member;

[0051] S300, assembly card assembly:

[0052] Rotate the first driving member to make the second driving member rotate synchronously, thereby driving the rotating part to rotate synchronously, so that the second limiting block disengages from the opening structure;

[0053] Slide the locking piece along the cover body and onto the threaded area of ​​the outer tube to complete the assembly;

[0054] S400, Installation:

[0055] After the welding-free flange is assembled in step S300, the cover is embedded into the container so that the opening structure is located in the inner cavity of the container. The first driving component is rotated so that the second driving component rotates synchronously, thereby driving the rotating part to rotate synchronously. Under the action of the second spring, the second limiting block protrudes out of the opening structure and pulls the welding-free flange outward so that the second limiting block fits against the inner wall of the container. The locking component is rotated so that under the action of the locking component and the external pipe thread, the locking component fits tightly against the outer wall of the container and the second limiting block fits tightly against the inner wall of the container, thus completing the installation.

[0056] S500, Disassembly:

[0057] Release the locking component, rotate the first driving component, so that the second limiting block completely disengages from the opening structure, pull out the weld-free flange, and detach the cover from the container.

[0058] The above-described technical solution of the present invention has the following beneficial technical effects:

[0059] This invention enables the installation and removal of flanges for the flow inlet of larger drum containers, avoiding the drawbacks of traditional welding methods. Attached Figure Description

[0060] Figure 1 is a schematic diagram of an embodiment of the method of the present invention;

[0061] Figure 2 is a cross-sectional structural diagram of an embodiment of the method of the present invention;

[0062] Figure 3 is a schematic diagram of the limiting component structure in the method of the present invention;

[0063] Figure 4 is a schematic diagram of the limiting component structure in the method of the present invention;

[0064] Figure 5 is an enlarged structural diagram of part A in Figure 4 of the method of the present invention;

[0065] Figure 6 is a three-dimensional structural diagram of the limiting component in the method of the present invention;

[0066] Figure 7 is a schematic diagram of a partial structure of the outer tube in one embodiment of the method of the present invention;

[0067] Figure 8 is an enlarged structural diagram of part B in Figure 2 of the method of the present invention;

[0068] Figure 9 is a schematic diagram of the overall structure of another embodiment of the method of the present invention;

[0069] Figure 10 is a schematic diagram of the cover structure in one embodiment of the method of the present invention;

[0070] Figure 11 is a partial structural diagram of the driving mechanism in one embodiment of the method of the present invention;

[0071] Figure 12 is a schematic diagram of the connection structure between the transmission rod and the first driving component in one embodiment of the method of the present invention;

[0072] Figure 13 is a schematic diagram of the limiting component structure in one embodiment of the method of the present invention;

[0073] Figure 14 is an enlarged structural diagram of part C in Figure 13 of the method of the present invention;

[0074] Figure 15 is a three-dimensional structural diagram of the limiting component in one embodiment of the method of the present invention;

[0075] Figure 16 is a schematic diagram of the support structure in one embodiment of the method of the present invention;

[0076] Figure 17 is a schematic diagram of the inner tube structure in one embodiment of the method of the present invention;

[0077] Figure 18 is a schematic diagram of the outer tube structure in one embodiment of the method of the present invention;

[0078] Figure 19 is a schematic diagram of the installation structure of an embodiment of the method of the present invention. Detailed Implementation Methods

[0079] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0080] This invention can be applied to larger barrel containers. Its function is achieved by making holes in the container and embedding the flange of this invention into the holes for fixation.

[0081] The first aspect of the present invention provides an assembled weldless flange, comprising a flow guide pipe 1, wherein the two ends of the flow guide pipe 1 are respectively provided with a connecting part 2 and a locking assembly 3; the connecting part 2 is provided on the outside of the container for connecting to an external pipe;

[0082] The locking assembly 3 includes a limiting member 3233 and a locking member 31. In use, the limiting member 3233 and the locking member 31 are located on both sides of the container wall to fix the guide tube 1 to the container wall so as to realize the communication between the guide tube 1 and the inner cavity of the container.

[0083] Referring to Figure 19, in one embodiment of the present invention, one end of the guide tube 1 located in the locking assembly 3 is provided with an external thread, the locking member 31 is located inside the container wall 100 and uses a nut adapted to the external thread, and the limiting member 3233 is located outside the container wall 100 and is provided with a reinforcing rib (not shown in the figure) between it and the connecting part.

[0084] In this embodiment, installing or removing the flange requires manual entry into the container to tighten / feed the nuts, which is inconvenient in practical applications. Therefore, the following embodiments employ an external operation method to install and remove the flange, further improving the practical applicability of the invention.

[0085] Therefore, in the following embodiments, the guide pipe 1 adopts a coaxial two-section pipe body, the engaging component is placed outside the drum container, and the limiting component is set into a controllable structure to realize the installation and removal of the flange from the drum container from the outside. Specifically:

[0086] Referring to Figures 1-8, in another embodiment of the present invention, the guide tube 1 includes an inner tube 11 and an outer tube 12 coaxial with the inner tube 11. The limiting member 3233 includes a cover 32 connected to the end of the inner tube 11. The cover 32 is provided with an opening structure 3221 and a limiting member 33 movably embedded in the cover 32. The outer tube 12 is provided with a driving mechanism 4 for driving the limiting member 33 to protrude out of or disengage from the opening structure 3221. The engaging member 31 is sleeved on the outer tube 12.

[0087] During installation, the limiting component needs to be inserted into / embedded into the inner cavity of the container through the through hole on the container. Therefore, the limiting component needs to be retractable / expandable to pass through the through hole on the container and to limit the movement (this limiting capability refers to the ability to act as a limiting and engaging structure when the flange is fixed to the container wall).

[0088] In one specific test mode, the limiting component 33 includes a first limiting block 330 that can protrude from or disengage from the opening structure 3221, a first base 331, and a first spring 332 disposed between the first limiting block 330 and the first base 331. The first base 330 is provided with an inner cylinder 3310 and an outer cylinder 3311, and the inner cylinder 3310 and the outer cylinder 3311 form a locking interval 1110. One end of the first spring 332 is embedded in the locking interval 1110. The bottom of the first limiting block 330 is provided with a rod 3301 that is movably embedded in the inner cylinder 3310.

[0089] In this embodiment, at least before the first limiting block 330 fully protrudes from the opening structure 3221, the first spring 332 is always kept in a compressed state, that is, the first spring 332 is always kept under tension along the length direction of the rod 3301.

[0090] The cover 32 has a double-layer structure, including an inner ring 321 and an outer ring 322. A closed interlayer section 2221 is formed between the outer ring 322 and the inner ring 321. The opening structure 3221 is formed on the outer ring 322. The inner ring 321 or the outer ring 322 is provided with a first sliding groove 3220 at the position corresponding to the opening structure 3221, which allows the limiting component 33 to move. As shown in Figure 6, in this embodiment, the first sliding groove 3220 is formed on the outer ring 322.

[0091] In the initial state, the limiting component 33 is located in the interlayer section 2221, that is, the first limiting block 330 is pushed in along the first sliding groove 3220 until the first limiting block 330 protrudes from the opening structure 3221 under the action of the first spring 332. At this time, the bottom end of the base is embedded in the slot 3210. In this state, the limiting component 33 is in a relatively fixed state in the horizontal direction.

[0092] More specifically, in this embodiment, the drive mechanism 4 includes a slide rail 41, a first slider 42, and a transmission component 44 connecting the first slider 42 and the rod 3301 on the outer tube 12. The first slider 42 can reciprocate along the length of the slide rail 41. The slide rail 41 is provided with a first limiting groove 43 for positioning the first slider 42. In use, when the first slider 42 is embedded in the first limiting groove 43, the first limiting block 330 is completely disengaged from the opening structure 3221. The inner tube 11 and the outer tube 12 are provided with a transmission port 3312 through which the transmission component 44 passes.

[0093] As an example, the transmission port 3312 can be a circular hole or an open slot formed on the inner cylinder 3310 and the outer cylinder 3311, through which the traction rope passes and connects to the rod body 3301. When the first slider 42 moves along the first limiting groove 43 on the slide rail 41, the traction rope pulls the rod body 3301 downwards along the length of the inner cylinder, causing the first spring 332 to further contract, thereby causing the first limiting block 330 to disengage from the opening structure 3221. Conversely, the first spring 332 returns to its original position, and the first limiting block 330 protrudes from the opening structure 3221. It should be noted that, as shown in Figure 3, the curvature of the base edge of the first base and the first limiting block is consistent with the curvature of the inner and outer rings.

[0094] Specifically, in use, the rod 3301 is always embedded inside the inner cylinder 3310. The purpose is to prevent the first spring 332 from bending and deforming along its length, which would affect the driving effect of the drive mechanism on the first limit block 330.

[0095] To facilitate the disassembly and assembly of the main body of the invention, in this embodiment, the transmission component 44 is composed of two traction ropes, which are connected by a connector. Both the inner cylinder and the outer tube are provided with pulley structures for the traction ropes to pass through. The pulley structure includes a first pulley 441 placed in the inner cylinder 3310 and a second pulley 442 placed in the outer tube 12. One end of one traction rope is connected to the rod body 3301, and the other end passes through the first pulley 441 and connects to connector A. One end of the other traction rope is connected to the first slider 42, and the other end passes through the second pulley 442 and connects to connector B. Connector A and connector B are combined to form the connector. The connector can be a detachable buckle or other detachable / combinable connection structure, which will not be described in detail here.

[0096] In the above embodiments, although the outer tube 12 and the inner tube 11 are coaxially arranged, in the actual installation process, the axis of the outer tube 12 and the inner tube 11 may deviate, that is, the outer tube 12 may deviate up / down (the up / down position is relative to the position in Figure 2 and is not limited).

[0097] Therefore, the connecting part 2 is provided at one end of the outer tube 12 and the other end is threadedly connected to the locking part 31. The inner tube 11 is provided at one end with a pressing part 111 and the other end is threadedly connected to the inner ring 321. The connecting part 2 is provided with a pressing groove 21 corresponding to the position of the pressing part 111.

[0098] As an example, a "convex ring structure" is provided at the end of the outer tube 12 near the connecting part 2, and a matching "concave ring structure" is provided at the corresponding position at the end of the connecting part 2 near the outer tube 12, or a "concave ring structure" is provided at the end of the outer tube 12 near the connecting part 2, and a matching "convex ring structure" is provided at the corresponding position at the end of the connecting part 2 near the outer tube 12, and then they are spliced ​​together (not shown in the attached figure); then, when the pressing part 111 is fully embedded in the pressing groove 21, that is, the outer tube 12 and the inner tube 11 are necessarily coaxial.

[0099] In one application of the present invention, the traction rope is made of conductive wire, and the first slider 42, the rod 3301, and the first limiting block 330 are made of conductive material. As can be deduced from Figure 4, in one embodiment of this application, three sets of driving mechanisms are used. Then, by selecting any two sets and connecting the first slider 42 of different sets to the positive and negative terminals of the power supply, electrolysis of the liquid in the barrel container can be achieved (this application example is limited to the liquid in the barrel container being electrolyzable or requiring electrolysis).

[0100] The specific installation method under this embodiment proposed in the second aspect of the present invention is as follows:

[0101] An installation method for a prefabricated, weld-free flange includes the following steps:

[0102] S001, Assembly cover 32:

[0103] Move the limiting component 33 along the first sliding groove 3220 until the first limiting block 330 protrudes from the opening structure 3221 and the bottom part of the first base 331 is embedded in the slot 3210 opened on the inner ring 321.

[0104] S002, Assemble drive mechanism 4:

[0105] Slide the first slider 42 along the slide rail 41 and connect the two traction ropes using the connector.

[0106] S003, Assemble guide tube 1;

[0107] The connecting part 2 is inserted into the inner tube 11, and one end of the inner tube 11 is passed through the outer tube 12, so that the "convex ring structure and concave ring structure are spliced ​​and engaged" in the above embodiment.

[0108] S004, Connecting cover 32 and guide tube 1:

[0109] Hold the cover 32 and rotate the clamping part 111 at one end of the inner tube 11 so that the inner ring 321 of the cover and the inner tube 11 are connected by the thread until the clamping part 111 of the inner tube 11 fits into the clamping groove 21 on the connecting part 2, and the inner side of the connecting part 2 fits into the end of the outer tube 12, that is, "the convex ring structure and the concave ring structure are spliced ​​and engaged". The other end of the outer tube 12 is pressed into the outer ring 322 of the cover 32, thus achieving the relative fixation of the outer tube 12.

[0110] S005, Fine-tuning:

[0111] Rotate the cover 32 so that the pressing part 111 of the inner tube 11 is tightly pressed into the pressing groove 21 on the connecting part 2, and / or rotate the pressing part 111 of the inner tube 11 so that the first limiting block 330 and the slide rail 41 are on the same horizontal line, thus completing the fine adjustment.

[0112] S006, Assembly Card Assembly 31:

[0113] Push the first slider 42 so that the first slider 42 moves into the first limiting groove 43 and the first limiting block 330 completely disengages from the opening structure 3221. Slide the locking part 31 along the cover 32 into the threaded area on the outer tube 12 to complete the assembly of the locking part 31 and the overall weldless flange.

[0114] S007, Installation:

[0115] After the assembly in step S006 is completed, the cover 32 of the weldless flange is embedded into the container, so that the opening structure 3221 is located in the inner cavity of the container. The first slider 42 is moved so that the first slider 42 is disengaged from the first limiting groove 43. Under the action of the first spring 332, the first limiting block 330 protrudes out of the opening structure 3221 and pulls the weldless flange (or connecting part 2) outward so that the first limiting block 330 fits against the inner wall of the container. The locking part 31 is rotated. Under the action of the locking part 31 and the external pipe thread, the locking part 31 fits tightly against the outer wall of the container and the first limiting block 330 fits tightly against the inner wall of the container, thus completing the installation.

[0116] S008, Disassembly:

[0117] Release the locking assembly 31, push the first slider 42, so that the first slider 42 moves into the first limiting groove 43, the first limiting block 330 completely disengages from the opening structure 3221, and pulls out the weldless flange, so that the cover 32 is separated from the container.

[0118] Referring to Figures 9-18, in another embodiment of the present invention, the limiting component 33 includes a second limiting block 9 that can protrude from or detach from the opening structure 3221, a second base 7, and a second spring 8 disposed between the second limiting block 9 and the second base 7. The second base 7 includes a fixing part 74 and a rotating part 73 that can rotate along the circumferential direction of the fixing part 74. The rotating part 73 is provided with a first cylinder 71 and a cylindrical block 72 disposed in the first cylinder 71. The bottom of the second limiting block 9 is provided with a second cylinder 91 that is movably embedded in the first cylinder 71. One end of the second spring 8 is disposed in the second cylinder 91, and the other end is sleeved on the cylindrical block 72.

[0119] The cover 33 has a double-layer structure, including an inner ring 321 and an outer ring 322. The opening structure 3221 is provided on the outer ring 322, and a closed-end sandwich section 2221 is formed between the outer ring 322 and the inner ring 321. The outer ring 322 is provided with a second sliding groove 3223 corresponding to the position of the opening structure 3221, which allows the limiting component 33 to move. The second sliding groove 3223 communicates with the opening structure 3221. The inner ring 321 is provided with a third sliding groove 3212. The fixing part 74 is provided with a second slider 741, which can slide along the length direction of the third sliding groove 3212.

[0120] The driving mechanism 4 includes a first driving member 5 and a transmission rod 6 connecting the first driving member 5 and the rotating part 73. The first driving member 5 is movably disposed at the end of the outer tube 12 and can rotate along the circumferential direction of the outer tube 12, so that when the first driving member 5 is rotated, the transmission rod 6 drives the rotating part 73 to rotate synchronously. When the first driving member 5 rotates at an angle, the second limiting block 9 completely disengages from or protrudes from the opening structure 3221.

[0121] In one specific implementation, one end of the inner tube 11 is threadedly connected to the inner ring 321, and the other end is provided with the connecting part 2; one end of the outer tube 12 is threadedly connected to the locking part 31; when the second limiting block 9 protrudes from the opening structure 3221, the end face of the opening structure 3221 and the end face of the second limiting block 9 are in a tangential arc shape.

[0122] The purpose of the tangential arc is that when the first driving member 5 rotates and drives the second limiting block 9 to rotate, the second spring 8 is compressed under the action of the tangential arc, thereby causing the second limiting block 9 to disengage from the opening structure 3221.

[0123] The driving mechanism 4 further includes a second driving member 51. The transmission rod 6 includes a first transmission rod 61 connecting the first driving member 5 and the second driving member 51, and a second transmission rod 62 connecting the rotating part 73 and the second driving member 51, so that under the action of the first transmission rod 61, the second driving member 51 rotates synchronously with the first driving member 5, thereby driving the rotating part 73 to rotate synchronously under the action of the second transmission rod 62. A support member 121 is provided between the outer tube 12 and the inner tube 11. The support member 121 is provided with an arc-shaped groove 122 for the first transmission rod 6 to pass through. A second limiting groove 3222 is provided on the outer ring 322. In the use state, the second driving member 51 is completely fitted with the second limiting groove 3222.

[0124] Referring to Figures 16 and 18, a protrusion 123 is provided on the support member 121, and a groove 124 is provided on the inner wall of the outer tube 12 at the position corresponding to the protrusion. The support member 121 is embedded into the outer tube 12 along the groove 124.

[0125] According to the above structure, when the first driving member 5 is rotated, in order to avoid the transmission rod 6 from twisting, multiple support members 121 can be set inside the outer tube. The arc length of the arc groove 122 on the support member 121 is at least the same as (only larger than) the arc length of the second sliding groove 3223 with an L-shaped cross section.

[0126] The arc-shaped groove 122 on the support member 121 should fit snugly against the transmission rod 6 to prevent the transmission rod 6 from twisting during rotation. The multiple support members 121 also serve to enhance the load-bearing strength of the outer tube 12.

[0127] The second driving component 51 fits into the second limiting groove 3222. Firstly, it can enhance the sealing of the interlayer section 2221 in the cover 32 to prevent the liquid in the barrel container from seeping out through the opening structure 3221 to the space between the outer and inner tubes. Secondly, it can enhance the load-bearing strength of the cover.

[0128] Both the second driving member 51 and the support member 121 can make the outer tube 12 and the inner tube 11 coaxial. The inner rings of both the support member 121 and the second driving member 51 are in contact with the outer ring surface of the inner tube 11.

[0129] It should be noted that both the first transmission rod 61 and the second transmission rod 62 are threaded rods. The side wall of the first driving component 5 is provided with a concave threaded hole. One end of the first transmission rod 61 passes through the concave threaded hole and is fixed by the built-in nut 52 (refer to Figure 12).

[0130] The specific installation method under this embodiment proposed in the second aspect of the present invention is as follows:

[0131] An installation method for a prefabricated, weld-free flange includes the following steps:

[0132] S100, Assembly cover:

[0133] Align the second slider on the fixed part with the third slide groove, rotate the rotating part so that the second limiting block is aligned with the second slide groove, push the limiting component so that the second slider moves along the third slide groove and the second limiting block moves along the second slide groove, rotate the rotating part so that the second limiting block protrudes from the opening structure;

[0134] S200, equipped with guide tube and drive mechanism:

[0135] The second transmission rod is connected to the fixed part and the second driving member, so that the second driving member is fully embedded in the second limiting groove;

[0136] After connecting the inner end of the first transmission rod to the second driving component, the outer tube is then fitted along the first transmission rod.

[0137] Align the arc-shaped groove on the support with the first transmission rod, and insert the support along the first transmission rod into the outer tube;

[0138] The first driving component is connected to the outer end of the first transmission rod;

[0139] Insert the inner tube, rotate the connecting part at one end of the inner tube so that the end of the inner tube is threadedly connected to the inner ring of the cover until the connecting part is in contact with the first driving member;

[0140] S300, assembly card assembly:

[0141] Rotate the first driving member to make the second driving member rotate synchronously, thereby driving the rotating part to rotate synchronously, so that the second limiting block disengages from the opening structure;

[0142] Slide the locking piece along the cover body and onto the threaded area of ​​the outer tube to complete the assembly;

[0143] S400, Installation:

[0144] After the welding-free flange is assembled in step S300, the cover is embedded into the container so that the opening structure is located in the inner cavity of the container. The first driving component is rotated so that the second driving component rotates synchronously, thereby driving the rotating part to rotate synchronously. Under the action of the second spring, the second limiting block protrudes out of the opening structure and pulls the welding-free flange outward so that the second limiting block fits against the inner wall of the container. The locking component is rotated so that under the action of the locking component and the external pipe thread, the locking component fits tightly against the outer wall of the container and the second limiting block fits tightly against the inner wall of the container, thus completing the installation.

[0145] S500, Disassembly:

[0146] Release the locking component, rotate the first driving component, so that the second limiting block completely disengages from the opening structure, pull out the weld-free flange, and detach the cover from the container.

[0147] In the above embodiments, the opening structure 3221, the snap-fit ​​component 31, etc., are easy to install a sealing ring on the part that comes into contact with the liquid inside the container, so as to improve the overall sealing performance of the flange.

[0148] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A prefabricated, weld-free flange, characterized in that, include: A guide tube (1) is provided at both ends with a connecting part (2) and a locking assembly (3); the connecting part (2) is provided on the outside of the container for connecting to an external pipe; the locking assembly (3) includes a limiting member (3233) and a locking member (31); in use, the limiting member (3233) and the locking member (31) are provided on both sides of the container wall for fixing the guide tube (1) to the container wall, so as to realize the communication between the guide tube (1) and the inner cavity of the container; the guide tube (1) includes an inner tube (11) and an outer tube (12) coaxial with the inner tube (11), and the limiting member (3233) includes a locking member (31) and a locking member (3233). The inner tube (11) is connected to a cover (32) at its end. The cover (32) has an opening structure (3221) and a limiting component (33) movably embedded in the cover (32). The outer tube (12) has a driving mechanism (4) for driving the limiting component (33) to protrude from or detach from the opening structure (3221). The locking member (31) is sleeved on the outer tube (12). The limiting component (33) includes a second limiting block (9) that can protrude from or detach from the opening structure (3221), a second base (7), and a second limiting block (9) located between the second limiting block (9) and the second base (7). The spring (8), the second base (7) includes a fixed part (74) and a rotating part (73) that can rotate along the circumference of the fixed part (74). The rotating part (73) is provided with a first cylinder (71) and a cylindrical block (72) provided in the first cylinder (71). The bottom of the second limiting block (9) is provided with a second cylinder (91) that is movably embedded in the first cylinder (71). One end of the second spring (8) is provided in the second cylinder (91), and the other end is sleeved on the cylindrical block (72). The cover (32) is a double-layer structure, including an inner ring (321) and an outer ring (322). The opening An opening structure (3221) is provided on the outer ring (322), and a sandwich section (2221) with one end closed is formed between the outer ring (322) and the inner ring (321). The outer ring (322) is provided with a second sliding groove (3223) corresponding to the position of the opening structure (3221), which allows the limiting component (33) to move. The second sliding groove (3223) is connected to the opening structure (3221). The inner ring (321) is provided with a third sliding groove (3212). The fixing part (74) is provided with a second slider (741), which can slide along the length direction of the third sliding groove (3212).The driving mechanism (4) includes a first driving member (5) and a transmission rod (6) connecting the first driving member (5) and the rotating part (73). The first driving member (5) is movably disposed at the end of the outer tube (12) and can rotate along the circumference of the outer tube (12), so that when the first driving member (5) is rotated, the transmission rod (6) drives the rotating part (73) to rotate synchronously. When the first driving member (5) rotates at an angle, the second limiting block (9) completely disengages from or protrudes from the opening structure (3221). One end of the inner tube (11) is threadedly connected to the inner ring (321), and the other end is provided with the connecting part (2). One end of the outer tube (12) is threadedly connected to the locking member (31). When the second limiting block (9) protrudes from the opening structure (3221), the end face of the opening structure (3221) is tangential to the end face of the second limiting block (9). The drive mechanism (4) is arc-shaped; it also includes a second drive member (51), and the transmission rod (6) includes a first transmission rod (61) connecting the first drive member (5) and the second drive member (51) and a second transmission rod (62) connecting the rotating part (73) and the second drive member (51), so that under the action of the first transmission rod (61), the second drive member (51) rotates synchronously with the first drive member (5), thereby driving the rotating part (73) to rotate synchronously under the action of the second transmission rod (62); a support member (121) is provided between the outer tube (12) and the inner tube (11), and the support member (121) is provided with an arc-shaped groove (122) for the first transmission rod (61) to pass through; a second limiting groove (3222) is provided on the outer ring (322), and in the use state, the second drive member (51) and the second limiting groove (3222) are completely fitted together.

2. The installation method of the prefabricated weldless flange according to claim 1, characterized in that, The steps include: S100, assembling the cover: aligning the second slider on the fixed part with the third slide groove, rotating the rotating part to align the second limiting block with the second slide groove, pushing the limiting component to move the second slider along the third slide groove, moving the second limiting block along the second slide groove, rotating the rotating part to make the second limiting block protrude from the opening structure; S200, assembling the guide tube and driving mechanism: connecting the second transmission rod to the rotating part and the second driving component, so that the second driving component is fully embedded in the second limiting groove; connecting the inner end of the first transmission rod to the second driving component, and then fitting the outer tube along the first transmission rod; aligning the arc groove on the support component with the first transmission rod, and fitting the support component into the outer tube along the first transmission rod; connecting the first driving component to the outer end of the first transmission rod; embedding the inner tube, rotating the connecting part at one end of the inner tube to make the end of the inner tube threadedly connected to the inner ring of the cover, until the connecting part fits against the first driving component; S300, assembling the locking component: rotating... The first driving component causes the second driving component to rotate synchronously, thereby driving the rotating part to rotate synchronously, causing the second limiting block to disengage from the opening structure; the locking component is inserted along the cover body and inserted into the threaded area on the outer tube to complete the assembly; S400, Installation: The cover body of the weldless flange assembled in step S300 is embedded into the container, so that the opening structure is located in the inner cavity of the container. The first driving component is rotated, causing the second driving component to rotate synchronously, thereby driving the rotating part to rotate synchronously. Under the action of the second spring, the second limiting block protrudes out of the opening structure, pulling the weldless flange outward, so that the second limiting block fits against the inner wall of the container. The locking component is rotated, and under the action of the locking component and the thread of the outer tube, the locking component fits tightly against the outer wall of the container and the second limiting block fits tightly against the inner wall of the container, completing the installation; S500, Disassembly: The locking component is loosened, the first driving component is rotated, so that the second limiting block completely disengages from the opening structure, and the weldless flange is pulled outward, so that the cover body is disengaged from the container.

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