A corrugated expansion joint with a guide structure

Abstract

This utility model belongs to the field of corrugated expansion joints, specifically relating to a corrugated expansion joint with a guide structure. It includes a corrugated expansion joint with flanges at both its upper and lower ends. Each flange has multiple mounting holes. A connecting seat is fixedly connected to the end of the flange closest to the corrugated expansion joint, and the connecting seat is slidably connected to the corrugated expansion joint. Two symmetrically distributed guide rods are fixedly connected to the ends of the two flanges that are close to each other. This utility model guides the movement of the guide rods and flanges through a sliding connection between the guide block and the guide sleeve, thereby guiding the expansion and contraction of the corrugated expansion joint. Furthermore, the sliding connection between the balls and the grooves during guidance transforms the sliding friction into rolling friction, effectively reducing friction during guidance. Simultaneously, the balls are automatically lubricated during the guidance process, further reducing guiding friction and making it convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of corrugated expansion joint technology, specifically a corrugated expansion joint with a guide structure. Background Technology

[0002] Corrugated expansion joints are used in various pipeline systems in industries such as industrial, heating, and chemical processing to ensure the safe operation of pipelines during fluid transportation and to adapt to temperature changes, vibrations, and other operating conditions in the system.

[0003] Utility model patent CN217328989U discloses an equal-diameter corrugated expansion joint, comprising a straight pipe and a connecting rod. A corrugated section is provided in the middle of the straight pipe, with an outer protective mechanism on the outer side and an inner protective mechanism on the inner side. Sealing gaskets are provided at both ends of the straight pipe, end plates are installed on the outer sides of both ends, and a middle plate is installed on the outer side of the middle section. The connecting rod passes through the end plates and the middle plate, and is fixed to the end plates with bolts. The outer protective mechanism includes an outer sleeve and an inner sleeve, located on the straight pipes on both sides of the corrugated pipe, with an insulation layer filling the space between the inner sleeve, outer sleeve, and corrugated pipe. This utility model, by providing an outer protective mechanism and an insulation layer between the inner sleeve, outer sleeve, and corrugated pipe, can both protect the corrugated pipe and provide insulation, preventing large temperature fluctuations and thus avoiding the corrugated pipe from bursting.

[0004] In the aforementioned prior art, during the use of corrugated expansion joints, the guiding friction is relatively large when guiding the expansion and contraction of the joint, which affects the stability and service life. Furthermore, corrugated expansion joints are not easy to disassemble and are inconvenient for inspection and maintenance. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a corrugated expansion joint with a guide structure, which solves the problem of large guiding friction when the corrugated expansion joint moves with extension and retraction, and also solves the problem of the corrugated expansion joint being inconvenient to disassemble.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrugated expansion joint with a guide structure, comprising a corrugated expansion joint, with flanges contacting both the upper and lower ends of the corrugated expansion joint. Multiple mounting holes are provided inside the flanges. A connecting seat is fixedly connected to one end of the flange near the corrugated expansion joint, and the connecting seat is slidably connected to the corrugated expansion joint. Two symmetrically distributed guide rods are fixedly connected to the ends of the two flanges that are close to each other. A guide sleeve is slidably sleeved on the outer side of each guide rod, and a guide block is slidably sleeved inside the guide sleeve. The guide block is fixedly connected to the guide rod. A guiding mechanism is provided on the guide sleeve, and a connecting mechanism is provided on the connecting seat.

[0007] Preferably, the guiding mechanism includes ball bearings, with the ball bearings movably sleeved inside the guide block and slidably connected to the guide sleeve. A pressure block is fixedly connected to the end of the guide block away from the guide rod. A support block is fixedly connected inside the guide sleeve, and a support spring is provided inside the guide sleeve. A sponge ring is fixedly sleeved inside the guide sleeve, with lubricating oil absorbed inside. A plug contacts the outer side of the sponge ring, and the plug engages with the guide sleeve. By designing the guiding mechanism, the expansion and contraction movement of the corrugated expansion joint can be guided.

[0008] Preferably, the guide sleeve has a groove inside, and a ball bearing is slidably connected inside the groove. By designing the groove, the ball bearing can slide inside the groove.

[0009] Preferably, one end of the support spring is fixedly connected to the support block, and the other end of the support spring is fixedly connected to the pressure block. By designing the support spring, the pressure block can be provided with auxiliary support.

[0010] Preferably, the connecting mechanism includes a pull rod, which is slidably sleeved inside the connecting seat. A connecting block is fixedly connected to the inner side of the pull rod, and the connecting block contacts the corrugated expansion joint. The connecting block is slidably connected to the connecting seat. An insert block is fixedly connected to the outer side of the connecting block, and the insert block is slidably connected to the corrugated expansion joint. A fixing rod is slidably sleeved inside the connecting block, and the fixing rod is fixedly connected to the connecting seat. A retaining spring is provided on the outer side of the fixing rod. A magnetic block is fixedly connected to the top of the connecting block, and the magnetic block is slidably connected to the connecting seat. A magnet is fixedly connected inside the connecting seat. This connecting mechanism facilitates the disassembly of the corrugated expansion joint.

[0011] Preferably, the corrugated expansion joint has a slot inside, and a plug is slidably connected inside the slot. By designing the slot, the plug can slide inside the slot.

[0012] Preferably, one end of the clamping spring is fixedly connected to the connecting block, and the other end of the clamping spring is fixedly connected to the connecting seat. By designing the clamping spring, the connecting block can be clamped and supported.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, through the design of a sliding connection between the guide block and the guide sleeve, can guide the movement of the guide rod and the flange, and thus guide the expansion and contraction of the corrugated expansion joint. During the guidance process, the sliding connection between the ball and the groove can transform the sliding friction during guidance into rolling friction, which can effectively reduce the friction force during guidance. At the same time, the ball can be automatically lubricated during the guidance process, which can further reduce the guiding friction force and make it convenient to use.

[0015] 2. This utility model, through the design of the insertion block and the corrugated expansion joint, can limit the corrugated expansion joint, thereby enabling the installation and use of the corrugated expansion joint and the flange. By pulling the pull rod outward, the insertion block can be pulled out from the inside of the corrugated expansion joint, and the corrugated expansion joint and the flange can be easily separated, facilitating the inspection and maintenance of the corrugated expansion joint. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A partial three-dimensional sectional view of the structure;

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This utility model Figure 2 Left sectional view of the connector.

[0020] In the diagram: 1. Corrugated expansion joint; 2. Flange; 3. Mounting hole; 4. Connecting seat; 5. Guide rod; 6. Guide sleeve; 7. Guide block; 8. Guide mechanism; 9. Connecting mechanism; 81. Ball bearing; 82. Slide groove; 83. Pressure block; 84. Support block; 85. Support spring; 86. Sponge ring; 87. Plug; 91. Pull rod; 92. Connecting block; 93. Insert block; 94. Slot; 95. Fixing rod; 96. Clamping spring; 97. Magnetic block; 98. Magnet. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2A corrugated expansion joint with a guide structure includes a corrugated expansion joint 1. Both the upper and lower ends of the corrugated expansion joint 1 are in contact with flanges 2. Multiple mounting holes 3 are opened inside the flanges 2. A connecting seat 4 is fixedly connected to the end of the flanges 2 near the corrugated expansion joint 1. The connecting seat 4 is slidably connected to the corrugated expansion joint 1. Two symmetrically distributed guide rods 5 are fixedly connected to the ends of the two flanges 2 that are close to each other. A guide sleeve 6 is slidably sleeved on the outside of the guide rods 5. A guide block 7 is slidably sleeved inside the guide sleeve 6. The guide block 7 is fixedly connected to the guide rod 5. A guide mechanism 8 is provided on the guide sleeve 6. A connecting mechanism 9 is provided on the connecting seat 4.

[0023] Please see Figure 1 , Figure 2 , Figure 3 The guide mechanism 8 includes a ball bearing 81. The ball bearing 81 is movably sleeved inside the guide block 7 and is slidably connected to the guide sleeve 6. The guide sleeve 6 has a groove 82 inside, and the ball bearing 81 is slidably connected inside the groove 82. By designing the groove 82, the ball bearing 81 can slide inside the groove 82. A pressure block 83 is fixedly connected to the end of the guide block 7 away from the guide rod 5. A support block 84 is fixedly connected inside the guide sleeve 6. A support spring 85 is provided inside the guide sleeve 6. One end of the support spring 85 is fixedly connected to the support block 84, and the other end of the support spring 85 is fixedly connected to the pressure block 83. By designing the support spring 85, the pressure block 83 can be auxiliaryly supported. A sponge ring 86 is fixedly sleeved inside the guide sleeve 6. The sponge ring 86 absorbs lubricating oil. A plug 87 contacts the outside of the sponge ring 86 and is engaged with the guide sleeve 6. By designing the guide mechanism 8, the extension and retraction movement of the corrugated expansion joint 1 can be guided.

[0024] Please see Figure 1 , Figure 2 , Figure 4The connecting mechanism 9 includes a pull rod 91, which is slidably sleeved inside the connecting seat 4. A connecting block 92 is fixedly connected to the inner side of the pull rod 91, and the connecting block 92 contacts the corrugated expansion joint 1. The connecting block 92 is slidably connected to the connecting seat 4, and an insert block 93 is fixedly connected to the outer side of the connecting block 92. The insert block 93 is slidably connected to the corrugated expansion joint 1. A slot 94 is provided inside the corrugated expansion joint 1, and the insert block 93 is slidably connected inside the slot 94. By designing the slot 94, the insert block 93 can slide inside the slot 94. A fixed rod 95 is slidably connected to a connecting seat 4. A clamping spring 96 is provided on the outside of the fixed rod 95. One end of the clamping spring 96 is fixedly connected to the connecting block 92, and the other end of the clamping spring 96 is fixedly connected to the connecting seat 4. By designing the clamping spring 96, the connecting block 92 can be clamped and supported. A magnetic block 97 is fixedly connected to the top of the connecting block 92. The magnetic block 97 is slidably connected to the connecting seat 4. A magnet 98 is fixedly connected inside the connecting seat 4. By designing the connecting mechanism 9, it is convenient to disassemble the corrugated expansion joint 1.

[0025] The specific implementation process of this utility model is as follows: In use, when the corrugated expansion joint 1 expands or contracts, the corrugated expansion joint 1 will drive the flange 2 to move. The flange 2 can drive the guide rod 5 to slide along the guide sleeve 6. The guide rod 5 will drive the guide block 7 to slide inside the guide sleeve 6. At the same time, the guide block 7 will drive the ball 81 to slide along the slide groove 82, thereby guiding the expansion and contraction of the corrugated expansion joint 1. During the guidance, the sliding connection between the ball 81 and the slide groove 82 can change the sliding friction during the guidance into rolling friction, which can effectively reduce the friction force during the guidance. During the movement of the ball 81, it will contact the sponge ring 86. The ball 81 can squeeze the sponge ring 86. The lubricating oil adsorbed inside the sponge ring 86 can automatically lubricate the ball 81, which can further reduce the guiding friction force and make it convenient to use. When the plug 87 is pulled out, the lubricating oil inside the sponge ring 86 can be easily replenished.

[0026] When it is necessary to disassemble the corrugated expansion joint 1, pull the pull rod 91 outwards. The pull rod 91 drives the connecting block 92 to move. The connecting block 92 will slide along the fixed rod 95 and press against the spring 96. The connecting block 92 will also drive the magnetic block 97 to move horizontally. At the same time, when the connecting block 92 moves, it will also drive the insertion block 93 to move horizontally. When the magnetic block 97 is attracted to the magnet 98, the insertion block 93 can be pulled out from the slot 94. Then, the corrugated expansion joint 1 and the flange 2 can be easily separated, which facilitates the inspection and maintenance of the corrugated expansion joint 1.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrugated expansion joint with a guide structure, comprising a corrugated expansion joint (1), characterized in that: Both ends of the corrugated expansion joint (1) are in contact with flanges (2). Multiple mounting holes (3) are provided inside the flanges (2). A connecting seat (4) is fixedly connected to one end of the flange (2) near the corrugated expansion joint (1). The connecting seat (4) is slidably connected to the corrugated expansion joint (1). Two guide rods (5) are fixedly connected to the ends of the two flanges (2) that are close to each other. A guide sleeve (6) is slidably sleeved on the outside of the guide rod (5). A guide block (7) is slidably sleeved inside the guide sleeve (6). The guide block (7) is fixedly connected to the guide rod (5). A guiding mechanism (8) is provided on the guide sleeve (6). A connecting mechanism (9) is provided on the connecting seat (4).

2. The corrugated expansion joint with guide structure according to claim 1, characterized in that: The guiding mechanism (8) includes a ball (81). The ball (81) is movably sleeved inside the guide block (7). The ball (81) is slidably connected to the guide sleeve (6). A pressure block (83) is fixedly connected to one end of the guide block (7) away from the guide rod (5). A support block (84) is fixedly connected inside the guide sleeve (6). A support spring (85) is provided inside the guide sleeve (6). A sponge ring (86) is fixedly sleeved inside the guide sleeve (6). Lubricating oil is absorbed inside the sponge ring (86). A plug (87) contacts the outside of the sponge ring (86). The plug (87) is engaged with the guide sleeve (6).

3. The corrugated expansion joint with guide structure according to claim 1, characterized in that: The guide sleeve (6) has a groove (82) inside, and a ball (81) is slidably connected inside the groove (82).

4. A corrugated expansion joint with a guide structure according to claim 2, characterized in that: One end of the support spring (85) is fixedly connected to the support block (84), and the other end of the support spring (85) is fixedly connected to the pressure block (83).

5. A corrugated expansion joint with a guide structure according to claim 1, characterized in that: The connecting mechanism (9) includes a pull rod (91), the pull rod (91) is slidably sleeved inside the connecting seat (4), a connecting block (92) is fixedly connected to the inner side of the pull rod (91), the connecting block (92) contacts the corrugated expansion joint (1), the connecting block (92) is slidably connected to the connecting seat (4), an insert block (93) is fixedly connected to the outer side of the connecting block (92), the insert block (93) is slidably connected to the corrugated expansion joint (1), a fixing rod (95) is slidably sleeved inside the connecting block (92), the fixing rod (95) is fixedly connected to the connecting seat (4), a clamping spring (96) is provided on the outer side of the fixing rod (95), a magnetic block (97) is fixedly connected to the top of the connecting block (92), the magnetic block (97) is slidably connected to the connecting seat (4), and a magnet (98) is fixedly connected inside the connecting seat (4).

6. A corrugated expansion joint with a guide structure according to claim 1, characterized in that: The corrugated expansion joint (1) has a slot (94) inside, and a plug (93) is slidably connected inside the slot (94).

7. A corrugated expansion joint with a guide structure according to claim 5, characterized in that: One end of the clamping spring (96) is fixedly connected to the connecting block (92), and the other end of the clamping spring (96) is fixedly connected to the connecting seat (4).

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