Pipeline quick connecting piece

Abstract

The utility model discloses a pipeline quick connecting piece, and relates to the technical field of connecting pieces. The quick-connection pipe fitting structurally comprises a quick-connection pipe fitting body, an occupying ring piece and a nut sleeve are arranged at a port of the quick-connection pipe fitting body, a reed is arranged between the occupying ring piece and the nut sleeve, and a sealing piece is arranged between the occupying ring piece and the quick-connection pipe fitting body. The nut sleeve is reasonable in structural design, when the nut sleeve is screwed down, the reed is extruded and the inner side tilts so as to clamp and lock the outer wall of a pipeline, so that the operation of connecting pipe fittings is convenient and fast, and the connection is firm; the structure of more than two layers of sealing rings enables the sealing effect of the pipeline quick connector to be better.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and in particular to a pipeline quick connector. Background Art

[0002] In daily life, we encounter various situations where pipes need to be connected, some are gas pipes, some are liquid pipes, some are pipe-to-pipe connections, and some are pipes connected to machines. There are also various connection methods and connectors on the market, but because they require a certain degree of firmness and sealing, they often require professional construction personnel and auxiliary tools such as raw tape, which makes the operation more complicated and costly. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the pipeline connection needs to be sealed and firm, the operation is complicated, and many materials and tools are required. To this end, the application provides a pipeline quick connector that can firmly, quickly and sealably connect the pipeline, and the connection and disassembly operations are convenient.

[0004] In order to solve the above technical problems, the utility model provides a pipeline quick connector, including a quick pipe connector, a placeholder ring is provided at the port of the quick pipe connector, a nut sleeve is screwed outside the port of the quick pipe connector, a spring is provided between the placeholder ring and the nut sleeve, and the inner edge of the spring is squeezed and lifted by the placeholder ring when the nut sleeve is tightened onto the quick pipe connector, thereby locking the outer wall of the pipeline; a sealing member is provided between the placeholder ring and the quick pipe connector.

[0005] Preferably, the sealing member comprises at least two sealing rings, with gaskets provided between the sealing rings.

[0006] Preferably, when the nut sleeve is tightened, the lower end of the placeholder ring squeezes the seal, and the sealing ring in the seal is squeezed and deformed to fit tightly against the outer wall of the pipe and the inner wall of the quick-connect fitting. A shoulder is provided on the inner wall of the port of the quick-connect fitting, and the placeholder ring is limited by the shoulder.

[0007] Preferably, the inner diameter of the nut sleeve and the inner diameter of the quick-connect fitting are the same as the outer diameter of the pipe, and the inner diameter of the reed is larger than the outer diameter of the pipe when the reed is not squeezed.

[0008] Preferably, the spring leaf comprises a ring portion, which is tilted downward and provided with a locking piece, the ring portion is horizontal, and the inner edge of the upper end of the placeholder ring is arranged on the top of the lower end surface of the locking piece.

[0009] Preferably, the spring leaf has a groove extending from the ring portion to the locking piece, and the groove expands at the position where the spring leaf ring portion is inclined toward the locking piece.

[0010] Preferably, the outer wall of the side of the placeholder ring has an annular protrusion, and when the pipeline is disassembled, the protrusion can be limited by the limiting protrusion ring on the inner wall of the nut sleeve.

[0011] Preferably, the quick-release tube is provided with a polygonal outer wall.

[0012] Preferably, the nut sleeve is provided with a polygonal outer wall.

[0013] Preferably, the two ports of the quick-release fitting have a larger diameter and a smaller diameter.

[0014] To sum up, the beneficial effects of the utility model are: when tightening the nut sleeve, the spring is squeezed inside and tilted up to lock the outer wall of the pipe, making the operation of connecting the pipe fittings convenient and fast and the connection firm; the structure of double-layer or more sealing rings can make the sealing effect of the pipe quick connector better, so that the connecting pipe fittings do not need to use auxiliary sealing tools such as raw tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of this application.

[0016] Figure 2 This is a schematic diagram of the explosion structure of this application.

[0017] Figure 3 It is a partial cross-sectional schematic diagram of the present application.

[0018] Figure 4 This is an enlarged cross-sectional view of the placeholder ring in this application.

[0019] Figure 5 It is an enlarged schematic diagram of the reed in this application.

[0020] Figure 6 It is an enlarged schematic diagram of the sealing member in this application.

[0021] Figure 7 This is an enlarged partial cross-sectional view of this application.

[0022] Explanation of the reference numerals: 1. quick-release fitting; 11. shoulder; 2. place-taking ring; 21. annular protrusion; 3. nut sleeve; 31. limiting protrusion; 4. spring; 41. ring; 42. locking plate; 43. slot; 5. sealing element; 51. sealing ring; 52. gasket. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described content cannot fully exemplify all implementation schemes. The following examples are only a part of many implementation schemes, not all examples. Based on the disclosure of the utility model, all other implementation results obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0024] Example

[0025] like Figure 1As shown, a pipeline quick connector includes a quick connector 1, a placeholder ring 2 is provided at the port of the quick connector 1, and a nut sleeve 3 is screwed outside the port of the quick connector 1. Figure 2 As shown, a spring 4 is provided between the spacer ring 2 and the nut sleeve 3. When the nut sleeve 3 is tightened to the quick-connect fitting 1, the inner edge of the spring 4 is squeezed and lifted by the spacer ring 2 to lock the outer wall of the pipe. A seal 5 is provided between the spacer ring 2 and the quick-connect fitting 1. By utilizing the characteristics of the spring 4 being squeezed and deformed, the inner side of the spring 4 is lifted to lock the outer wall of the pipe, thereby playing a role in firmly connecting the pipe. The seal 5 plays a role in sealing the pipe and the quick-connect fitting 1, and no additional sealing materials or tools such as raw tape or hot melt adhesive are needed.

[0026] like Figure 6 As shown, the seal 5 includes at least two sealing rings 51, and a gasket 52 is arranged between the sealing rings 51. The double-layer or more sealing ring 51 structure plays a multiple sealing role, so that the sealing effect is better.

[0027] like Figure 3 As shown, when the nut sleeve 3 is tightened, the lower end of the placeholder ring 2 squeezes the seal 5, and the sealing ring 51 in the seal 5 is squeezed and deformed to fit tightly against the outer wall of the pipe and the inner wall of the quick-connect fitting 1. The inner wall of the port of the quick-connect fitting 1 is provided with a shoulder 11, and the placeholder ring 2 is limited by the shoulder 11. When the nut sleeve 3 is tightened downward, the placeholder ring 2 first squeezes the seal 5 downward, and multiple sealing rings therein are squeezed and deformed to produce multiple sealing effects; the placeholder ring 2 continues to move downward, and is then stopped by the shoulder 11 of the port of the quick-connect fitting 1, and then cooperates with the nut sleeve 3 to squeeze the spring 4 between the two to deform it.

[0028] like Figure 3 As shown, the inner diameters of the nut sleeve 3 and the quick-connect fitting 1 are the same as the outer diameter of the pipe, and the inner diameter of the reed 4 is larger than the outer diameter of the pipe when it is not squeezed, thereby preventing the reed 4 from scraping the pipe wall and causing damage to the pipe when the pipe is inserted into the pipe quick-connect fitting.

[0029] like Figure 5 As shown, the spring 4 includes a ring portion 41, which is tilted downward and provided with a locking piece 42. The ring portion 41 is horizontal, and the inner edge of the upper end of the place-taking ring 2 is placed on the lower end surface of the locking piece 42. The horizontal arrangement of the ring portion 41 of the spring 4 can reduce the rotation of the spring 4 when the nut sleeve 3 rotates, thereby reducing the annular cutting of the outer wall of the pipe by the spring 4. When the nut sleeve 3 is rotated downward to press the spring 4, the inner edge of the upper end of the place-taking ring 2 presses the lower end surface of the locking piece 42 upward, so that the locking piece 42 is tilted inward and locks the outer wall of the pipe.

[0030] like Figure 5As shown, there is a slot 43 on the spring 4 extending from the ring portion 41 to the locking piece 42, and the slot 43 is enlarged at the position where the ring portion 41 of the spring 4 is inclined toward the locking piece 42. The slot 43 can disperse the deformation position to avoid the permanent deformation of the spring 4 due to excessive local deformation, which makes the removal operation inconvenient. The enlargement of the inclined position reduces the material at the deformation position of the spring 4, so that the spring 4 can be deformed more easily.

[0031] like Figure 4 and Figure 7 As shown, the outer wall of the side of the placeholder ring 2 has an annular protrusion 21. When disassembling the pipe, the protrusion can be limited by the limiting protrusion 31 on the inner wall of the nut sleeve 3, thereby bringing the placeholder ring 2, the spring 4 and the pipe out of the quick-release pipe fitting 1 to prevent the pipe from being locked in the quick-release pipe fitting 1 and difficult to loosen.

[0032] like Figure 1 As shown, the quick-connect fitting 1 is provided with a polygonal outer wall, and the nut sleeve 3 is provided with a polygonal outer wall. The polygonal outer wall can increase the friction resistance of rotating the pipe quick-connect fitting, making the operation of tightening the quick-connect fitting 1 and the nut sleeve 3 simpler and easier.

[0033] Example 2

[0034] The difference between this embodiment and embodiment 1 is that the two ports of the quick-connect fitting 1 have different diameters, one large and one small, and can be used for connecting two pipes of different diameters. In addition, the pipe quick-connect fitting can also have only one end provided with a quick-connect structure, and the other end directly extends from the machine.

[0035] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned implementation modes. Equivalent changes made to the structure, shape and principle within the knowledge scope of ordinary technicians in the relevant technical field all fall within the protection scope of the utility model.

Claims

1. A pipe quick connector, comprising a quick connector (1), characterized in that: The port of the quick-connect fitting (1) is provided with a spacer ring (2), a nut sleeve (3) is screwed outside the port of the quick-connect fitting (1), a spring (4) is provided between the spacer ring (2) and the nut sleeve (3), and the inner edge of the spring (4) is pressed and lifted by the spacer ring (2) when the nut sleeve (3) is tightened onto the quick-connect fitting (1), thereby locking the outer wall of the pipeline; A sealing member (5) is provided between the spacer ring member (2) and the quick-connect member (1).

2. The pipe quick connector according to claim 1, characterized in that: The sealing member (5) comprises at least two sealing rings (51), with a gasket (52) being provided between the sealing rings (51).

3. The pipe quick connector according to claim 2, characterized in that: When the nut sleeve (3) is tightened, the lower end of the spacer ring (2) squeezes the sealing member (5), and the sealing ring (51) in the sealing member (5) is squeezed and deformed to be closely attached to the outer wall of the pipeline and the inner wall of the quick-connect fitting (1). The inner wall of the port of the quick-connect fitting (1) is provided with a shoulder (11), and the spacer ring (2) is limited by the shoulder (11).

4. The pipe quick connector according to claim 1, characterized in that: The inner diameter of the nut sleeve (3) and the inner diameter of the quick-connect fitting (1) are the same as the outer diameter of the pipeline, and the inner diameter of the reed (4) is larger than the outer diameter of the pipeline when it is not squeezed.

5. The pipe quick connector according to claim 1, characterized in that: The leaf spring (4) comprises a ring portion (41), the ring portion (41) being inclined downward and provided with a locking piece (42), the ring portion (41) being horizontal, and the inner edge of the upper end of the place-taking ring (2) being arranged on the top of the lower end surface of the locking piece (42).

6. The pipe quick connector according to claim 5, characterized in that: The leaf spring (4) has a slot (43) extending from the ring portion (41) to the locking plate (42), and the slot (43) is enlarged at a position where the leaf spring (4) ring portion (41) is inclined toward the locking plate (42).

7. The pipe quick connector according to claim 1, characterized in that: The side outer wall of the spacer ring (2) is provided with an annular protrusion (21). When the pipeline is disassembled, the protrusion can be limited by the limiting protrusion (31) on the inner wall of the nut sleeve (3).

8. The pipe quick connector according to claim 1, characterized in that: The quick-connect fitting (1) is provided with a polygonal outer wall.

9. The pipe quick connector according to claim 1, characterized in that: The nut sleeve (3) is provided with a polygonal outer wall.

10. The pipe quick connector according to claim 1, characterized in that: The two ports of the quick-release pipe fitting (1) have a larger diameter and a smaller diameter.

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