一种用于防止气体或液体在管道中反向流动的接头
By designing the connector structure of the indicator, connection group one, and connection group two, and utilizing the cooperation of springs and pins, the problem of reverse flow of gas or liquid in the pipeline was solved, realizing unidirectional flow and improving the reliability and safety of pipeline connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIYAN BRANCH OF HEBEI YADA AUTOMOBILE PLASTIC PROD CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing pipeline connection methods are prone to gas or liquid reverse flow under pressure fluctuations or sudden situations, which can affect production efficiency and may cause safety accidents. In addition, existing check valve products have complex structures, high costs, are prone to wear, and have poor sealing performance.
Design a connector structure including an indicator, a first connection group, and a second connection group. Utilize the cooperation of a spring and a pin to ensure that gas or liquid can only flow in one direction. A tight connection is achieved through the design of a sealing gasket and a Green joint to prevent reverse flow.
It enables unidirectional flow of gas or liquid in pipelines, has a simple structure and low cost, enhances the practicality and safety of the device, and avoids production interference and safety hazards caused by reverse flow.
Smart Images
Figure CN224516245U_ABST
Abstract
Claims
1. A joint for preventing the reverse flow of gas or liquid in a pipe, comprising a pointing arrow (1), characterized in that: The rear end of the pointer (1) is fixedly connected to a connecting group one (2). A connecting group two (3) is provided on the lower side of the connecting group one (2). A pin (5) is provided in the middle of the connecting group two (3). A spring (4) is sleeved and connected on the upper side of the outer surface of the pin (5). The outer surface of the spring (4) is sleeved and connected to the connecting group one (2). A sealing gasket (6) is provided in the middle of the connecting group one (2). The spring (4) and the pin (5) are both located between the connecting group one (2) and the connecting group two (3).
2. A fitting for preventing reverse flow of gas or liquid in a pipe according to claim 1, characterized in that: The connecting assembly 1 (2) includes a hexagonal post 1 (21), a Green connector (24) is fixedly connected to the middle of the upper end of the hexagonal post 1 (21), a threaded groove (22) is provided in the middle of the lower end of the hexagonal post 1 (21), and an installation groove 1 (23) is provided on the top wall of the inner cavity of the threaded groove (22), and the inner cavity of the installation groove 1 (23) communicates with the inner cavity of the Green connector (24).
3. A fitting for preventing reverse flow of gas or liquid in a pipe according to claim 2, characterized in that: The front end of the hexagonal column (21) is fixedly connected to the rear end of the pointer (1), the inner cavity of the mounting groove (23) is sleeved and connected to the spring (4), and the top wall of the inner cavity of the threaded groove (22) is sleeved and connected to the outer surface of the sealing gasket (6).
4. The fitting for preventing reverse flow of gas or liquid in a pipe according to claim 1, wherein: The spring (4) is located in the middle of the inner cavity of the sealing gasket (6), and the pin (5) is located directly below the sealing gasket (6).
5. The fitting for preventing reverse flow of gas or liquid in a pipe according to claim 2, wherein: The second connecting assembly (3) includes a hexagonal column (32), with a threaded column (33) fixedly connected to the upper end of the hexagonal column (32). An installation groove (34) is provided in the middle of the upper end of the threaded column (33). A ring block (31) is fixedly connected to the lower end of the hexagonal column (32). A through hole (35) is provided between the upper side of the inner cavity of the ring block (31) and the middle of the bottom wall of the inner cavity of the installation groove (34).
6. A fitting for preventing reverse flow of gas or liquid in a pipe according to claim 5, characterized in that: The outer surface of the threaded column (33) is engaged with the inner cavity of the threaded groove (22), and the inner cavity of the mounting groove (34) is sleeved with the outer surface of the ejector pin (5).
7. The fitting for preventing reverse flow of gas or liquid in a pipe according to claim 5, wherein: The upper end of the threaded post (33) is attached to the lower end of the sealing gasket (6), and the spring (4) is located directly above the inner cavity of the mounting groove (34).