A hydraulic bellows which is easy to install
The hydraulic bellows, with its inner ring, outer ring, and locking pin design, solves the problems of unstable bellows connections and poor sealing, enabling convenient installation and efficient disassembly, enhancing sealing and stability, and making it suitable for liquid and gas transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINDU BELLOWS LTD WUXI
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-21
AI Technical Summary
Existing corrugated pipe connection methods are prone to separation from the joint when subjected to external force, the connection is unstable and the sealing performance is poor. Installation and disassembly are inconvenient and inefficient.
The design employs an inner ring, outer ring, and locking pin. By controlling the ring with the locking pin and cooperating with the side sliding groove and side sliding head, a stable connection between the bellows and the joint is achieved. The interlocking groove connecting the convex and concave heads and cooperating with the interlocking pin head enhances the sealing performance. The expansion of the pressure bladder further enhances the sealing effect.
It improves the stability and sealing of bellows connections, simplifies the installation and disassembly process, ensures the safety and stability of liquid and gas transportation, and reduces improvement costs.
Smart Images
Figure CN224533778U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corrugated pipe joint technology, specifically a hydraulic corrugated pipe that is easy to install. Background Technology
[0002] With the continuous maturation of corrugated pipe production technology, its usage requirements, applications, and construction methods have become well-known to pipeline installers. As a result, corrugated pipes have been widely used in pipeline systems for transporting liquids and gases in recent years. However, due to the corrugated shape of its outer circumference, it is difficult to fix directly using clamps or welding, and the connection stability is not good. Currently, most corrugated pipes are connected using joints, which is relatively convenient for installation.
[0003] For example, patent number CN 211925087 U discloses a connector connection structure for a corrugated pipe. The corrugated pipe is fixedly installed between the installation joint and the nut through a sealing and locking structure. The sealing and locking structure includes a retaining ring component that clamps and fastens to the outer wall of the corrugated pipe, and a sealing sleeve that is sleeved on one end of the corrugated pipe and connected to the retaining ring component. The nut is pressed against the retaining ring component. A water-stop groove is provided inside the installation joint, and a waterproof hook that engages with the water-stop groove is provided on the sealing sleeve. The engagement of the waterproof hook with the water-stop groove limits the sealing sleeve to be installed within the port of the installation joint. This not only prevents the sealing sleeve from loosening and sliding within the port of the installation joint, but also improves the sealing and waterproof effect between the sealing sleeve and the installation joint. It will not damage the sealing sleeve during the installation of the corrugated pipe. It has good installation stability, is relatively convenient to install, and has good sealing performance, which helps to improve the performance and service life of the product.
[0004] For example, patent number CN 215335118 U discloses a connection structure for a corrugated pipe, relating to the technical field of corrugated pipes. It includes a corrugated pipe and a connector. Two corrugated pipes are connected to both sides of the connector. Each corrugated pipe includes a pipe body and corrugated strips. The connector includes a connecting pipe and fixing pipes at both ends. A limiting pipe is provided at the middle position of the inner side of the connecting pipe, and a cavity is provided between the limiting pipe and the fixing pipe. A fixing claw is fixedly provided at the outer end of the fixing pipe. The fixing claw is arc-shaped, with a clamping block on the inner side and a bolt on the outer side. The bolt passes through the fixing claw and is fixedly connected to the clamping block. A nut is provided on the bolt. This utility model has a simple structure, good sealing effect, and is very convenient to connect, facilitating installation and disassembly, and greatly improving connection efficiency.
[0005] The first patent uses a retaining ring to connect the bellows to the connector. While this effectively achieves the connection, the bellows, being made of soft plastic, is prone to separating from the connector under tension, resulting in an unstable connection. The second patent uses a connector, clamping block, and bolts and nuts to connect to the outer wall of the bellows. Like the first patent, this patent suffers from the same problem: it easily separates from the connector under tension, and the seal is also suboptimal. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this utility model provides an easy-to-install hydraulic bellows, which solves the problems of easy separation from the joint, unstable connection, and poor sealing of the above-mentioned bellows connection methods when subjected to external force. At the same time, it also has the problems of inconvenient installation and disassembly and low efficiency.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic bellows that is easy to install, comprising a bellows and a connecting protrusion. The right side of the bellows is cylindrical and has four connection ports. An inner connecting ring is provided inside the right side of the bellows, and an outer connecting ring is provided outside the right side of the bellows. A pressure bladder is provided on the left side of the outer connecting ring, and a locking pin control ring is provided on the outer side of the outer connecting ring. A locking ring is provided on the left side of the locking pin control ring, and four locking pins are provided on the outer connecting ring. A connecting protrusion is provided on the right side of the outer connecting ring, and a connecting concave head is connected to the right side of the connecting protrusion.
[0010] Preferably, the inner ring has four inner ring guide ports on its right side, and the outer ring also has four guide ports on its right side. The guide ports are connected to guide grooves, and the outer ring has locking pin holes inside.
[0011] Preferably, a pressure bag connecting ring is provided on the right side of the pressure bag, and the pressure bag connecting ring is connected to the left side of the connecting outer ring.
[0012] Preferably, the locking pin control ring is provided with a side sliding groove, the tail of the locking pin is provided with a side sliding head, the side sliding head is connected to the side sliding groove, and the locking pin is located inside the locking pin hole.
[0013] Preferably, a connecting plate is provided on the left side of the connecting protrusion, the connecting plate being interference-fitted between the right side of the inner connecting ring and the outer connecting ring, and the connecting protrusion is provided with an interlocking groove.
[0014] Preferably, a connecting plate is provided on the right side of the connecting recess, an interlocking pin is provided inside the connecting recess, the interlocking pin is connected to the interlocking groove, and a sealing ring is provided on the left side of the connecting recess.
[0015] (III) Beneficial Effects
[0016] This invention provides a hydraulic bellows that is easy to install. It has the following advantages:
[0017] This patented design clamps the bellows in the middle using an outer ring and an inner ring, and secures the bellows with a locking pin, preventing it from separating from the joint when subjected to external force, thus greatly improving connection stability. Furthermore, the design of the locking pin control ring, side sliding groove, and side sliding head makes the installation and removal of the bellows extremely convenient; simply operating the locking pin control ring easily controls the position of the locking pin, improving installation and removal efficiency.
[0018] The interlocking grooves connecting the convex and concave ends, in conjunction with the interlocking pins, not only ensure a reliable connection between the bellows pipes but also enhance the overall sealing performance. The presence of the sealing ring further improves the sealing effect, preventing liquid or gas leakage and ensuring the safety and stability of the bellows when transporting liquids and gases.
[0019] In addition, the design of the flow inlet and flow channel allows the liquid to flow into the pressure bladder. When the liquid pressure is greater, the pressure inside the pressure bladder is greater, and the sealing effect of the pressure bladder on the left side of the connector is stronger.
[0020] This device is based on an improvement of existing equipment, so the improvement cost is relatively low and it will not cause a large amount of existing equipment to be discarded. It ensures the processing effect while reducing the investment in improvement costs, making it suitable for large-scale production. Attached Figure Description
[0021] Figure 1 A cross-sectional view of a hydraulic bellows structure for ease of installation;
[0022] Figure 2 This is a schematic diagram of the locking pin control ring and locking pin structure;
[0023] Figure 3 This is a cross-sectional view of the locking ring and locking pin control ring;
[0024] Figure 4 This is a schematic diagram of the connecting outer ring structure;
[0025] Figure 5 Sectional view of the connection control loop;
[0026] Figure 6 This is a schematic diagram of the connecting convex head structure;
[0027] Figure 7 This is a schematic diagram of two connectors connected together.
[0028] In the diagram: 1. Bellows; 2. Connecting inner ring; 21. Inner ring guide port; 3. Connecting outer ring; 31. Guide port; 32. Guide groove; 33. Locking pin hole; 4. Pressure bladder; 41. Pressure bladder connecting ring; 5. Locking ring; 6. Locking pin control ring; 61. Side sliding groove; 7. Locking pin; 71. Side sliding head; 8. Connecting protrusion; 81. Protrusion connecting plate; 82. Interlocking groove; 9. Connecting concave head; 91. Concave head connecting plate; 92. Interlocking pin head; 93. Sealing ring. Detailed Implementation
[0029] 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.
[0030] Please see Figure 1-7 This utility model provides a technical solution: a hydraulic bellows that is easy to install, including a bellows 1 and a connecting protrusion 8. The right side of the bellows 1 is cylindrical and has four connecting ports. A connecting inner ring 2 is provided inside the right side of the bellows 1. Four inner ring guide ports 21 are provided on the right side of the connecting inner ring 2. Four guide ports 31 are also provided on the right side of the connecting outer ring 3. The guide ports 31 are connected to guide grooves 32. A locking pin hole 33 is provided inside the connecting outer ring 3. A connecting outer ring 3 is provided outside the right side of the bellows 1. A pressure bladder 4 is provided on the left side of the connecting outer ring 3. A pressure bladder connecting ring 41 is provided on the right side of the pressure bladder 4. The pressure bladder connecting ring 41 is connected to the left side of the connecting outer ring 3. A locking pin control ring 6 is provided outside the connecting outer ring 3. The locking pin control ring 6 has a locking pin control ring 6 inside. A side sliding groove 61 is provided. A side sliding head 71 is provided at the tail of the locking pin 7. The side sliding head 71 is connected to the side sliding groove 61. The locking pin 7 is located inside the locking pin hole 33. A locking ring 5 is provided on the left side of the locking pin control ring 6. Four locking pins 7 are provided on the connecting outer ring 3. A connecting protrusion 8 is provided on the right side of the connecting outer ring 3. A protrusion connecting plate 81 is provided on the left side of the connecting protrusion 8. The protrusion connecting plate 81 is interference-fitted between the connecting inner ring 2 and the right side of the connecting outer ring 3. An interlocking groove 82 is provided on the connecting protrusion 8. A connecting concave head 9 is connected to the right side of the connecting protrusion 8. A concave head connecting plate 91 is provided on the right side of the connecting concave head 9. An interlocking pin head 92 is provided inside the connecting concave head 9. The interlocking pin head 92 is connected to the interlocking groove 82. A sealing ring 93 is provided on the left side of the connecting concave head 9.
[0031] In use, flatten the right end of the bellows 1 and drill four symmetrically arranged holes. Then, insert the right side of the bellows 1 between the inner connecting ring 2 and the outer connecting ring 3, aligning the four holes on the right side of the bellows 1 with the locking pin holes 33. After alignment, rotate the locking pin control ring 6 counterclockwise so that the locking pin 7 passes through the four holes on the right end of the bellows 1. After rotating the locking pin control ring 6, then mate the interlocking groove 82 of the left connecting protrusion 8 with the interlocking pin head 92 of the right connecting concave head 9. Because the left side of the connecting concave head 9 is provided with a sealing ring 93, and because the sealing ring 93 is elastic, the connecting concave head 9 will be pushed to the right by the sealing ring 93. The interlocking groove 82 and the interlocking pin head 92 resist this thrust, so the connecting concave head 9 and the connecting convex head 8 are relatively fixed together. After the connection is completed, the water flow is turned on, and the water flow enters the pressure bladder 4 through the guide port 31 and the guide groove 32. The pressure bladder 4 will then expand. Since the locking pin control ring 6 is not fixed after rotation, when the pressure bladder 4 expands due to the high pressure water flow, it will push the locking ring 5 to the right and connect it with the left side of the locking pin control ring 6 to lock the rotation of the locking pin control ring 6. At the same time, the expansion of the pressure bladder 4 will also seal the left side of the joint. The greater the pressure inside the pressure bladder 4, the better the sealing effect.
[0032] In summary, this easy-to-install hydraulic bellows connects the bellows 1 and the connector via the inner ring 2, the outer ring 3, and the locking pin 7. The pressure bladder 4 seals the joint. This patent clamps the bellows 1 between the outer ring 3 and the inner ring 2, and firmly controls the bellows with the locking pin 7, preventing the bellows 1 from separating from the connector when subjected to external force, thus greatly improving the stability of the connection.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] 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 hydraulically operated bellows that is easy to install, comprising a bellows (1) and a connecting lug (8), characterized in that: The right side of the corrugated pipe (1) is cylindrical and has four connection ports. The inside of the right side of the corrugated pipe (1) is provided with an inner connection ring (2), and the outside of the right side of the corrugated pipe (1) is provided with an outer connection ring (3). The left side of the outer connection ring (3) is provided with a pressure bladder (4), and the outside of the outer connection ring (3) is provided with a locking pin control ring (6). The left side of the locking pin control ring (6) is provided with a locking ring (5), and the outer connection ring (3) is provided with four locking pins (7). The right side of the outer connection ring (3) is provided with a connecting protrusion (8), and the right side of the connecting protrusion (8) is connected with a connecting concave head (9).
2. The hydraulic bellows for easy installation according to claim 1, characterized in that: The inner ring (2) is provided with four inner ring guide ports (21) on the right side, and the outer ring (3) is also provided with four guide ports (31) on the right side. The guide ports (31) are connected to guide grooves (32), and the outer ring (3) is provided with locking pin holes (33).
3. The hydraulic bellows for easy installation according to claim 1, characterized in that: A pressure bag connecting ring (41) is provided on the right side of the pressure bag (4), and the pressure bag connecting ring (41) is connected to the left side of the connecting outer ring (3).
4. The hydraulic bellows for easy installation according to claim 1, characterized in that: The locking pin control ring (6) is provided with a side sliding groove (61), and the tail of the locking pin (7) is provided with a side sliding head (71). The side sliding head (71) is connected to the side sliding groove (61), and the locking pin (7) is located inside the locking pin hole (33).
5. A hydraulic bellows for easy installation according to claim 1, characterized in that: A connecting plate (81) is provided on the left side of the connecting protrusion (8). The connecting plate (81) is interference-fitted between the right side of the connecting inner ring (2) and the connecting outer ring (3). The connecting protrusion (8) is provided with an interlocking groove (82).
6. A hydraulic bellows for easy installation according to claim 1, characterized in that: A connecting plate (91) is provided on the right side of the connecting recess (9), and an interlocking pin (92) is provided inside the connecting recess (9). The interlocking pin (92) is connected to the interlocking groove (82), and a sealing ring (93) is provided on the left side of the connecting recess (9).