An adapter with a rotary latching structure

Abstract

The utility model relates to an adapter, concretely relates to an adapter with rotary locking structure. Including sleeve, the side coaxial fixed with extension pipe of sleeve far from open mouth end, the inside of extension pipe is linked with sleeve, the inside wall of sleeve is coaxial and is established with annular groove, the inside of annular groove is embedded with sealing ring, the inside coaxial of sleeve is provided with the communicating pipe. The utility model discloses, when rotating sleeve makes the convex post along the arc groove inner wall and slides into the corresponding assembly groove, the clamping groove rotates to the position of alignment with the wedge, the spring rebound promotes the wedge and inserts the clamping groove inside, thereby limited the convex post from the assembly groove and turns out, through the cooperation of convex post and assembly groove inner wall, the movement of assembly pipe is limited in the sleeve, only need to rotate the specific radian angle of convex post in the arc groove in this process can complete the assembly of sleeve, need not to rotate many circles, reduced the operation difficulty of dismounting replacement low -voltage instrument or auxiliary equipment in the narrow space.

Description

Technical Field

[0001] This utility model relates to an adapter, specifically, to an adapter with a rotary locking structure. Background Technology

[0002] The main function of a pipe adapter is to provide a reliable and sealed connection between pipe systems of different specifications, types, or connection methods. By adapting to different pipe diameters, thread standards (such as NPT, BSP), materials (such as metal, plastic), or connection forms (such as flanges, sockets, quick couplings), it solves the problem of direct connection in pipe systems due to size or interface mismatch, thereby ensuring that fluids (liquids or gases) can flow smoothly and without leakage, while meeting the system's requirements for pressure, temperature, and sealing.

[0003] Existing technology includes a hybrid design adapter (one end welded, one end threaded). The welded end is used to connect to the product pipe 6 for high pressure, high temperature, or transportation of hazardous media, providing absolute sealing and permanent strength to eliminate the risk of leakage. The threaded end is used to connect to low-pressure instruments or auxiliary equipment (such as pressure gauges and valves) that require frequent disassembly, balancing convenient maintenance and economy. Essentially, it strictly follows the principle of "permanent sealing on the high-risk side and flexible disassembly on the low-risk side," ensuring the safety and reliability of critical systems while reserving an efficient entry point for daily maintenance.

[0004] Different models of low-pressure instruments or auxiliary equipment have different connecting pipe diameters. When it is necessary to replace different models of low-pressure instruments or auxiliary equipment, the connecting pipe diameter often does not match the adapter, which makes it impossible to install the equipment normally. If such equipment needs to be installed, the adapter must be replaced. However, the adapter is fixed to the product pipe 6 by welding. Replacing it by desoldering is not only time-consuming and laborious, but also carries the risk of damaging the product pipe 6. Utility Model Content

[0005] The purpose of this invention is to provide an adapter with a rotary locking structure to solve the problems mentioned in the background art.

[0006] When installing low-pressure instruments or auxiliary equipment whose pipe diameter does not match the current adapter, the adapter must be replaced. However, the adapter is fixed to the product pipe by welding. Replacing it by desoldering is not only time-consuming and laborious, but also carries the risk of damaging the product pipe.

[0007] To address the above problems, the present invention aims to provide an adapter with a rotary locking structure, comprising a sleeve, an extension tube coaxially fixed to the side of the sleeve away from the open end, the extension tube communicating with the interior of the sleeve, an annular groove coaxially formed on the inner wall of the sleeve, a sealing ring embedded inside the annular groove, a connecting tube coaxially arranged inside the sleeve, a pressure ring coaxially fixed to the end of the connecting tube near the sealing ring, one end of the connecting tube extending to the outside of the sleeve and welded to an adapter tube, a product tube welded to the end of the adapter tube away from the connecting tube, an assembly tube slidably sleeved on the connecting tube, the assembly tube being disposed inside the sleeve, and a locking mechanism provided on the sleeve, the locking mechanism locking the assembly tube in the current position when both sides of the pressure ring are in close contact with the sealing ring and the assembly tube respectively.

[0008] As a further improvement to this technical solution, the locking mechanism includes two sets of threads fixed to the outer circumference of the assembly tube and the inner circumference of the sleeve, respectively, with the two sets of threads engaging with each other.

[0009] As a further improvement to this technical solution, the locking mechanism includes two centrally symmetrical grooves opened on the inner wall of the sleeve circumference. One end of the groove extends to the edge of the sleeve opening end, and the other end of the groove is connected to an arc-shaped groove opened on the inner wall of the sleeve circumference. The axis of the arc-shaped groove and the axis of the sleeve are on the same straight line.

[0010] As a further improvement to this technical solution, the other end of the arc-shaped groove is connected to an assembly groove formed on the inner wall of the sleeve circumference, and the end of the assembly groove away from the sleeve axis extends to the outer wall of the sleeve circumference.

[0011] As a further improvement to this technical solution, the locking mechanism also includes two centrally symmetrical protrusions fixed to the outer circumference of the assembly tube. The end face of the protrusions away from the sleeve axis is provided with a groove. When the two sides of the pressure ring are in close contact with the sealing ring and the assembly tube respectively, the two protrusions are located inside the two assembly grooves respectively.

[0012] As a further improvement to this technical solution, the locking mechanism also includes a wedge block disposed inside the assembly groove. The side of the wedge block closest to the corresponding arc groove is set as an inclined surface. When the two sides of the pressure ring are in close contact with the sealing ring and the assembly tube respectively, the two wedge blocks are inserted into the interior of the two slots respectively.

[0013] As a further improvement to this technical solution, a block is provided inside the assembly groove and fixed to the sleeve by bolts. A sliding rod is fixed on the side of the wedge block away from the sleeve axis. The other end of the sliding rod slides through the block and is fixed with an end plate. A spring is provided between the block and the wedge block and is sleeved on the sliding rod. The spring pushes the wedge block away from the block.

[0014] As a further improvement to this technical solution, the internal spaces of the extension tube, sleeve, connecting tube, adapter tube and product tube constitute a continuous channel.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This adapter with a rotary locking structure allows the sleeve to be unscrewed from the outside of the assembly tube after the adapter tube and the product tube are welded together. The sleeve can then be replaced with an extension tube of the required diameter, making the product tube compatible with low-pressure instruments or auxiliary equipment of another diameter. This design improves the applicability of the adapter and eliminates the need to desolder and replace the adapter tube. This process reduces the workload of the operator and avoids damage to the product tube.

[0017] 2. This adapter with a rotary locking structure allows the protrusion to slide into the corresponding assembly slot along the inner wall of the arc-shaped groove when the sleeve is rotated. The slot rotates to the position aligned with the wedge, and the spring rebounds, pushing the wedge into the slot, thus restricting the protrusion from rotating out of the assembly slot. Through the cooperation between the protrusion and the inner wall of the assembly slot, the movement of the assembly tube inside the sleeve is restricted. During this process, the sleeve assembly can be completed by rotating the protrusion within the arc-shaped groove at a specific arc angle, without having to rotate it multiple times. This reduces the difficulty of disassembling and replacing low-pressure instruments or auxiliary equipment in confined spaces. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention in Embodiment 1;

[0019] Figure 2 This is a cross-sectional view of the overall structure of the present invention in Embodiment 1;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is an exploded view of the present invention in Embodiment 1;

[0022] Figure 5 This is a schematic diagram of the overall structure of the present invention in Embodiment 2;

[0023] Figure 6 This is a partial structural cross-sectional view of the present invention in Embodiment 2;

[0024] Figure 7 For the present utility model Figure 6 Enlarged view of the structure at point B;

[0025] Figure 8 This is a cross-sectional view of the overall structure of the present invention in Embodiment 2;

[0026] Figure 9 For the present utility model Figure 8 Enlarged view of the structure at point C;

[0027] Figure 10 This is an exploded view of the present invention in Embodiment 2.

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Sleeve; 11. Extension tube; 12. Assembly groove; 13. Arc groove; 14. Slide groove;

[0030] 2. Sealing ring;

[0031] 3. Connecting pipe; 31. Pressure ring;

[0032] 4. Assembly pipe;

[0033] 5. Transfer of control;

[0034] 6. Product Management;

[0035] 7. Protruding post; 71. Slot;

[0036] 8. Wedge; 81. Sliding rod; 82. Spring;

[0037] 9. Blockage. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Example 1

[0040] Please see Figure 1 As shown, the purpose of this embodiment is to provide an adapter with a rotary locking structure, including a sleeve 1. An extension tube 11 is coaxially fixed on the side of the sleeve 1 away from the open end, and the extension tube 11 is connected to the inside of the sleeve 1. A threaded groove is provided on the extension tube 11, and the extension tube 11 is threadedly connected to an external low-pressure instrument or auxiliary equipment (such as a pressure gauge or valve) through the threaded groove.

[0041] Reference Figures 2-4An annular groove is coaxially formed on the inner wall of the sleeve 1, and a sealing ring 2 is embedded inside the annular groove. The sealing ring 2 is made of rubber. A connecting pipe 3 is coaxially arranged inside the sleeve 1. A pressure ring 31 is coaxially fixed at one end of the connecting pipe 3 near the sealing ring 2. The pressure ring 31 and the connecting pipe 3 are integrally formed. One end of the connecting pipe 3 extends to the outside of the sleeve 1 and is welded with a connecting pipe 5. The product pipe 6 is welded to the end of the connecting pipe 5 away from the connecting pipe 3. The connecting pipe 5 can be a straight pipe or a bent pipe to adapt to different installation positions of the product pipe 6.

[0042] Meanwhile, an assembly tube 4 is slidably sleeved on the connecting pipe 3. The assembly tube 4 is located inside the sleeve 1, with one end extending to the outside of the sleeve 1. The part of the assembly tube 4 extending out of the sleeve 1 is in the shape of a hexagonal nut. The shape of the hexagonal nut allows the operator to easily rotate the assembly tube 4 using tools such as a wrench. A locking mechanism is provided on the sleeve 1. When both sides of the pressure ring 31 are in close contact with the sealing ring 2 and the assembly tube 4 respectively, the locking mechanism locks the assembly tube 4 in the current position. At this time, the assembly tube 4 and the sleeve 1 cooperate to clamp and fix the pressure ring 31, thereby fixing the position of the connecting pipe 3 and applying pressure to the sealing ring 2 to enable it to perform a sealing function and prevent liquid from leaking through the gap between the sleeve 1 and the connecting pipe 3.

[0043] The internal spaces of the extension tube 11, sleeve 1, connecting tube 3, adapter tube 5, and product tube 6 form a continuous channel, enabling the flow of liquid between the extension tube 11 and the product tube 6. Through the threaded connection of the extension tube 11 to the low-pressure instrument or auxiliary equipment, this adapter realizes the transfer function between the low-pressure instrument or auxiliary equipment and the product tube 6.

[0044] The structure of the locking mechanism is described in detail below. The locking mechanism includes two sets of threads fixed to the outer circumference of the assembly tube 4 and the inner circumference of the sleeve 1, respectively. The two sets of threads are threaded together. When the two sides of the pressure ring 31 are in close contact with the sealing ring 2 and the assembly tube 4, respectively, the threads on the assembly tube 4 and the sleeve 1 are in a threaded connection state. At this time, the assembly tube 4 is fixed inside the sleeve 1 by the friction between the two sets of threads, thereby achieving the function of restricting the movement of the pressure ring 31.

[0045] When using this adapter, the operator first inserts the connecting pipe 3 into the assembly pipe 4, so that the pressure ring 31 contacts one end of the assembly pipe 4. Then, one end of the adapter pipe 5 is welded to the end of the connecting pipe 3 away from the pressure ring 31. Next, the assembly pipe 4 and the end of the connecting pipe 3 away from the adapter pipe 5 are inserted into the sleeve 1 together, and the assembly pipe 4 is screwed into the thread on the sleeve 1. Then, the operator uses a wrench to rotate the assembly pipe 4, which drives the pressure ring 31 and the connecting pipe 3 to move along the axis of the sleeve 1 towards the extension pipe 11 until the pressure ring 31 is in close contact with the sealing ring 2. Finally, the other end of the adapter pipe 5 is welded to the product pipe 6, thus completing the installation of this adapter. By threading the low-pressure instrument or auxiliary equipment onto the extension pipe 11, the connection between the instrument or equipment and the product pipe 6 can be completed.

[0046] The sleeve 1 and extension tube 11 adopt a modular design with one-piece molding. The extension tube 11 is available in various diameter specifications. The operator can select the sleeve 1 with the corresponding diameter according to the diameter of the connecting pipe of the low-pressure instrument or auxiliary equipment to be connected. By applying the sleeve 1 to the adapter component, the product pipe 6 can be connected to low-pressure instruments or auxiliary equipment with different pipe diameters through the adapter. After the adapter pipe 5 is welded to the product pipe 6, the operator unscrews the sleeve 1 from the outside of the assembly pipe 4 and replaces it with a sleeve 1 with the extension tube 11 of the required diameter. This allows the product pipe 6 to be adapted to low-pressure instruments or auxiliary equipment with connecting pipes of different diameters, thereby significantly improving the applicability of the adapter.

[0047] Example 2

[0048] Unlike Embodiment 1, an alternative locking mechanism is provided to address the problem that it is difficult for operators to use a wrench to install the assembly tube 4 into the predetermined position inside the sleeve 1 by rotating it multiple times in a confined space.

[0049] The following details the structure of the locking mechanism, referring to... Figures 5-10The locking mechanism includes two centrally symmetrical grooves 14 formed on the inner circumference of the sleeve 1. One end of each groove 14 extends to the edge of the opening end of the sleeve 1, and the other end of each groove 14 connects to an arc-shaped groove 13 formed on the inner circumference of the sleeve 1. The axis of the arc-shaped groove 13 and the axis of the sleeve 1 are on the same straight line. The other end of the arc-shaped groove 13 connects to an assembly groove 12 formed on the inner circumference of the sleeve 1. The end of the assembly groove 12 away from the axis of the sleeve 1 extends to the outer circumference of the sleeve 1. The locking mechanism also includes two centrally symmetrical protrusions 7 fixed to the outer circumference of the assembly tube 4. The end face of the protrusions 7 away from the axis of the sleeve 1 has a slot 71. The locking mechanism also includes a wedge 8 disposed inside the assembly groove 12. The wedge 8 is inclined on the side near the corresponding arc groove 13. The assembly groove 12 is equipped with a block 9 that is fixed to the sleeve 1 by bolts. A slide rod 81 is fixed on the side of the wedge 8 away from the axis of the sleeve 1. The other end of the slide rod 81 slides through the block 9 and is fixed with an end plate. The end plate restricts the range of movement of the slide rod 81, so that the wedge 8 and the block 9 maintain a predetermined distance in the initial state. At the same time, a pull ring is fixed on the side of the end plate away from the slide rod 81, so that the worker can use tools (such as long items such as screwdrivers) to push and pull the end plate away from the block 9. A spring 82 is provided between the block 9 and the wedge 8 and is sleeved on the slide rod 81. The spring 82 pushes the wedge 8 away from the block 9.

[0050] Insert the connecting pipe 3 into the assembly pipe 4, so that the pressure ring 31 contacts one end of the assembly pipe 4. Then, weld one end of the adapter pipe 5 to the end of the connecting pipe 3 away from the pressure ring 31. The operator then fixes the sleeve 1 to the outside of the assembly pipe 4 in the following way:

[0051] First, sleeve 1 is placed on the outside of assembly pipe 4 and connecting pipe 3. During this process, the position of sleeve 1 is adjusted by rotation, so that the two protrusions 7 are inserted into the corresponding sliding grooves 14 respectively. When the pressure ring 31 moves to the position of contacting the sealing ring 2, its two sides form tight contact with the sealing ring 2 and assembly pipe 4 respectively. At the same time, the protrusions 7 move into the corresponding arc groove 13. Then, the operator rotates sleeve 1, so that the protrusions 7 rotate along the inner wall of the arc groove 13. When the protrusions 7 contact the inclined surface of the wedge block 8, the protrusions 7 squeeze and push the wedge block 8 to move away from the axis of sleeve 1 along the axis of sliding rod 81, which causes the distance between the wedge block 8 and the corresponding blocking block 9 to shorten, and the spring 82 is compressed and stored. Yes, this process continues until the end of the wedge 8 near the axis of the sleeve 1 forms a sliding contact with the end face of the protrusion 7 away from the axis of the sleeve 1. When the protrusion 7 rotates into the corresponding assembly groove 12 (that is, the two protrusions 7 are located inside the two assembly grooves 12 respectively), the slot 71 rotates to the position corresponding to the wedge 8. At this time, the spring 82 rebounds and pushes the wedge 8 to reset, so that the two wedges 8 are inserted into the two slots 71 respectively. The wedge 8 is locked into the slot 71, thereby restricting the protrusion 7 from rotating out of the assembly groove 12. Then, through the cooperation between the protrusion 7 and the inner wall of the assembly groove 12, the movement of the assembly tube 4 inside the sleeve 1 is restricted, and finally the movement of the pressure ring 31 is restricted.

[0052] During the process of locking the assembly tube 4 inside the sleeve 1 by this locking mechanism, the operator only needs to rotate the protrusion 7 within the arc groove 13 at a specific angle to complete the locking, without having to rotate it multiple times. This design greatly facilitates the operator in installing the sleeve 1 on the assembly tube 4 in a confined space, and then installing low-pressure instruments or auxiliary equipment on the product tube 6 through an adapter.

[0053] When it is necessary to replace the low-pressure instrument or auxiliary equipment, the operator first uses a tool to pull the end plate outward away from the block 9. The end plate then drives the wedge 8 out of the slot 71 through the slide rod 81. Then, the sleeve 1 is rotated so that the protrusion 7 moves to the arc groove 13 near the port of the slide groove 14. Next, the sleeve 1 is pulled away from the adapter pipe 5, and the protrusion 7 is pulled out from the slide groove 14, thereby separating the sleeve 1 from the assembly pipe 4. The low-pressure instrument or auxiliary equipment threaded to the extension pipe 11 is removed from the product pipe 6. After the sleeve 1, extension pipe 11, and low-pressure instrument or auxiliary equipment are moved to an open space, the operator rotates the low-pressure instrument or auxiliary equipment to separate it from the extension pipe 11. Then, the new low-pressure instrument or auxiliary equipment is threaded onto the extension pipe 11. By fixing the sleeve 1 to the outside of the assembly pipe 4 in this embodiment, the replacement of the new low-pressure instrument or auxiliary equipment can be completed.

[0054] Example 3

[0055] The sleeve 1 and assembly tube 4 in this adapter are modular designs. Operators can select sleeve 1 and assembly tube 4 with different locking mechanisms according to the size of the workspace, and then form an adapter with connecting tube 3, sealing ring 2 and adapter tube 5 to adapt to different installation environments. At the same time, the connecting tube 3 and adapter tube 5 inside the adapter can be retained and used without replacement, which effectively reduces replacement costs and reduces resource waste.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model 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 utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adapter with a rotary locking structure, comprising a sleeve (1), wherein an extension tube (11) is coaxially fixed to the side of the sleeve (1) away from the open end, the extension tube (11) being connected to the interior of the sleeve (1), characterized in that: The inner wall of the sleeve (1) is coaxially provided with an annular groove, and a sealing ring (2) is embedded in the annular groove. A connecting pipe (3) is coaxially provided inside the sleeve (1). A pressure ring (31) is coaxially fixed at one end of the connecting pipe (3) near the sealing ring (2). One end of the connecting pipe (3) extends to the outside of the sleeve (1) and is welded with a transfer pipe (5). The product pipe (6) is welded to the end of the transfer pipe (5) away from the connecting pipe (3). An assembly pipe (4) is slidably sleeved on the connecting pipe (3). The assembly pipe (4) is located inside the sleeve (1), and a locking mechanism is provided on the sleeve (1). When the two sides of the pressure ring (31) are in close contact with the sealing ring (2) and the assembly pipe (4) respectively, the locking mechanism locks the assembly pipe (4) in the current position.

2. The adapter with a rotary locking structure according to claim 1, characterized in that: The locking mechanism includes two sets of threads fixed to the outer circumference of the assembly tube (4) and the inner circumference of the sleeve (1), respectively, with the two sets of threads engaging with each other.

3. The adapter with a rotary locking structure according to claim 1, characterized in that: The locking mechanism includes two centrally symmetrical grooves (14) on the inner circumference of the sleeve (1). One end of the groove (14) extends to the edge of the opening end of the sleeve (1), and the other end of the groove (14) is connected to an arc-shaped groove (13) on the inner circumference of the sleeve (1). The axis of the arc-shaped groove (13) and the axis of the sleeve (1) are on the same straight line.

4. The adapter with a rotary locking structure according to claim 3, characterized in that: The other end of the arc groove (13) is connected to an assembly groove (12) opened on the inner circumference of the sleeve (1), and the end of the assembly groove (12) away from the axis of the sleeve (1) extends to the outer circumference of the sleeve (1).

5. The adapter with a rotary locking structure according to claim 4, characterized in that: The locking mechanism also includes two centrally symmetrical protrusions (7) fixed on the outer circumference of the assembly tube (4). The end face of the protrusions (7) away from the axis of the sleeve (1) is provided with a slot (71). When the two sides of the pressure ring (31) are in close contact with the sealing ring (2) and the assembly tube (4) respectively, the two protrusions (7) are located inside the two assembly slots (12) respectively.

6. The adapter with a rotary locking structure according to claim 5, characterized in that: The locking mechanism also includes a wedge (8) disposed inside the assembly groove (12). The side of the wedge (8) near the corresponding arc groove (13) is set as an inclined surface. When the two sides of the pressure ring (31) are in close contact with the sealing ring (2) and the assembly tube (4) respectively, the two wedges (8) are inserted into the interior of the two slots (71) respectively.

7. The adapter with a rotary locking structure according to claim 6, characterized in that: The assembly groove (12) is provided with a block (9) fixed to the sleeve (1) by bolts. A slide rod (81) is fixed on the side of the wedge (8) away from the axis of the sleeve (1). The other end of the slide rod (81) slides through the block (9) and is fixed with an end plate. A spring (82) is provided between the block (9) and the wedge (8) and is sleeved on the slide rod (81). The spring (82) pushes the wedge (8) away from the block (9).

8. The adapter with a rotary locking structure according to claim 1, characterized in that: The internal spaces of the extension tube (11), sleeve (1), connecting tube (3), adapter tube (5) and product tube (6) form a continuous channel.

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